Steel structure of mining belt conveyor corridor
Publish: 2021-04-19 13:36:06
1. It can be divided into three types: strong belt conveyor, ordinary belt conveyor and special purpose belt conveyor. The powerful belt conveyor is mainly used in the main transportation roadway of the mine, as the main transportation equipment of the mine, and the ordinary belt conveyor is mainly used in the transportation of the mining face of the mine. It is mentioned in the Internet of things of China machinery manufacturing that it can be used as the auxiliary transportation equipment of the mine. The special purpose belt conveyor, such as the inclined roadway transportation slope is greater than 30-90 degrees, can use the special belt conveyor such as the corrugated edge belt conveyor.
2. Rollers are metal, storage time to pay attention to, in all working faces, must be oiled to prevent rust
when storing, pay attention to the bearing of the contact surface between the handle and the belt, because this surface is relatively large, it is not easy to deform.
when storing, pay attention to the bearing of the contact surface between the handle and the belt, because this surface is relatively large, it is not easy to deform.
3. Application number name applicant inventor application date classification number
1 practical 200820016917.0 has the right to describe the change of pledge preservation license filing anti slip tape Meng Fanying; Meng Jinpo 2008-01-23b65g15 / 34 (2006.01) I
2 practical 200920221719.2 has the right to single drive belt machine anti slip device Tianjin Iron and Steel Group Co., Ltd. he Yuelin; Liu Zhiqiang; Guo Xiaokun 2009-10-29b65g15 / 00 (2006.01) I
3 practical 201220738321.8 has the right to a kind of automatic control device to protect the low-voltage motor belt slipping, Ma'anshan Iron and Steel Co., Ltd. Xu Shenghao 2012-12-28b65g43 / 04 (2006.01) I
4 practical 201320593052.5 has the right to a kind of belt conveyor anti slipping roller, Luoyang Shengyu Heavy Instry Machinery Co., Ltd; Lu Liling; Li Hongjun; Su Cunqi; Li Xiaohui 2013-09-25b65g23 / 04 (2006.01) I
5 practical 201220716511. X has the right to an anti slip detection device based on PLC control system. Hou Shiyun of Baosteel Stainless Steel Co., Ltd. 2012-12-21b65g43 / 04 (2006.01) I
6 practical 201020511697.6 has the right to ring edge retaining tape Xinxiang Zhenyuan mechanical equipment Co., Ltd. Zhou Ruifeng 2010-08-31b65g15 / 56 (2006.01) I
7 practical 2 01020144541.9 have the right to a waterproof steam tape confidential cover, Ma Xianguo of Anshan Iron and Steel Co., Ltd; Yin Dongsong 2010-03-30b65g21 / 08 (2006.01) I
8 practical 201220014275.7 has the right to water spray control device of belt conveyor, Zhang Shitie of Angang Mining Group Co., Ltd; Hong Zhenqian 2012-01-13b65g43 / 00 (2006.01) I
9 practical 201220627242. X has the right to the constant tension device of wide belt conveyor jinchangsheng of MCC North (Dalian) Engineering Technology Co., Ltd; Shi Rong; High speed railway 2012-11-26b65g23 / 44 (2006.01) I
10 practical 201020296313.3 has the right to an anti reverse belt conveyor head wheel. Hefei Qingya building materials Co., Ltd. Huang Yongfeng 2010-08-12b65g23 / 04 (2006.01) I
11 practical 201420006085. X has the right to an anti winding roller cloth lifting device. Ouyang Zhiyu, Shaoyang Textile Machinery Co., Ltd; Zhu Guanghui; Liu Song; Liu Qianqian 2014-01-07b65h20 / 02 (2006.01) I
12 practical 201320547797.8 has the right to a wiper device and an anti slip belt conveyor with a wiper device China Shenhua Energy Co., Ltd. Shenhua Shendong Coal Group Co., Ltd. Wang Hongjian 2013-09-04b65g15 / 64 (2006.01) I
13 invention 200810019146.5 has the right to a chain belt feeder China University of mining and technology Zhao Jiyun; Xu Shilin 2008-01-10b65g17 / 06 (2006.01) I
14 practical 201120377239.2 has the right to hand wrap the machine Tianjin kadake automobile high tech company Chen Ruiqing; Wang Qingwu; Li Yanbiao 2011-09-28b65b67 / 10 (2006.01) I
1 practical 200820016917.0 has the right to describe the change of pledge preservation license filing anti slip tape Meng Fanying; Meng Jinpo 2008-01-23b65g15 / 34 (2006.01) I
2 practical 200920221719.2 has the right to single drive belt machine anti slip device Tianjin Iron and Steel Group Co., Ltd. he Yuelin; Liu Zhiqiang; Guo Xiaokun 2009-10-29b65g15 / 00 (2006.01) I
3 practical 201220738321.8 has the right to a kind of automatic control device to protect the low-voltage motor belt slipping, Ma'anshan Iron and Steel Co., Ltd. Xu Shenghao 2012-12-28b65g43 / 04 (2006.01) I
4 practical 201320593052.5 has the right to a kind of belt conveyor anti slipping roller, Luoyang Shengyu Heavy Instry Machinery Co., Ltd; Lu Liling; Li Hongjun; Su Cunqi; Li Xiaohui 2013-09-25b65g23 / 04 (2006.01) I
5 practical 201220716511. X has the right to an anti slip detection device based on PLC control system. Hou Shiyun of Baosteel Stainless Steel Co., Ltd. 2012-12-21b65g43 / 04 (2006.01) I
6 practical 201020511697.6 has the right to ring edge retaining tape Xinxiang Zhenyuan mechanical equipment Co., Ltd. Zhou Ruifeng 2010-08-31b65g15 / 56 (2006.01) I
7 practical 2 01020144541.9 have the right to a waterproof steam tape confidential cover, Ma Xianguo of Anshan Iron and Steel Co., Ltd; Yin Dongsong 2010-03-30b65g21 / 08 (2006.01) I
8 practical 201220014275.7 has the right to water spray control device of belt conveyor, Zhang Shitie of Angang Mining Group Co., Ltd; Hong Zhenqian 2012-01-13b65g43 / 00 (2006.01) I
9 practical 201220627242. X has the right to the constant tension device of wide belt conveyor jinchangsheng of MCC North (Dalian) Engineering Technology Co., Ltd; Shi Rong; High speed railway 2012-11-26b65g23 / 44 (2006.01) I
10 practical 201020296313.3 has the right to an anti reverse belt conveyor head wheel. Hefei Qingya building materials Co., Ltd. Huang Yongfeng 2010-08-12b65g23 / 04 (2006.01) I
11 practical 201420006085. X has the right to an anti winding roller cloth lifting device. Ouyang Zhiyu, Shaoyang Textile Machinery Co., Ltd; Zhu Guanghui; Liu Song; Liu Qianqian 2014-01-07b65h20 / 02 (2006.01) I
12 practical 201320547797.8 has the right to a wiper device and an anti slip belt conveyor with a wiper device China Shenhua Energy Co., Ltd. Shenhua Shendong Coal Group Co., Ltd. Wang Hongjian 2013-09-04b65g15 / 64 (2006.01) I
13 invention 200810019146.5 has the right to a chain belt feeder China University of mining and technology Zhao Jiyun; Xu Shilin 2008-01-10b65g17 / 06 (2006.01) I
14 practical 201120377239.2 has the right to hand wrap the machine Tianjin kadake automobile high tech company Chen Ruiqing; Wang Qingwu; Li Yanbiao 2011-09-28b65b67 / 10 (2006.01) I
4. If you want to play a st-proof role, it is recommended that you can use a fully transparent protective cover, which has low cost, full visibility and control, and low maintenance cost
the st of coal conveying system is mainly coal st. In the process of coal screening, crushing and conveying, there will be st emission. If no measures are taken, the environment and atmosphere of coal conveying site will be polluted. At the same time, coal st contains free silica. The smaller the st particles are, the less easy it is to settle. Once inhaled, human body will deposit in the lung, which will cause fibrous lesions, graally harden the lung tissue, cause various lung diseases, and seriously endanger the health of workers
in addition, the st falls on the rotating part of the machine, which accelerates the mechanical wear; Falling on the electrical equipment will cause poor contact of the electrical equipment and make the control failure of the electrical equipment; Excessive st accumulation on site will also cause st spontaneous combustion and other adverse consequences. In order to ensure the health of coal handling workers, ensure the safe proction of thermal power plant and extend the service life of equipment, comprehensive st control must be carried out in coal handling system of thermal power plant
at present, the existing belt conveyor st suppression device usually adds a spray device in the process of conveying or at the outlet to spray the water to the st removal space in the form of misty particles to rece st pollution. This method has a large demand for water resources
another method is to add st collection bags on the belt conveyor. In the body, st collection port, air outlet, flower plate and several filter bags connected with flower plate and evenly distributed, the st is filtered by the filter bags and falls back to the coal conveying belt, so as to rece the st pollution of the coal conveying belt. However, it needs to be equipped with a fan, and the filter bags need to be regularly maintained and replaced, A large number of filter bags are used on a coal conveying belt, which are replaced frequently and the daily maintenance cost is very high
in addition to the above two kinds of st-proof devices, there is also a fully transparent st-proof cover of coal conveying belt conveyor which has won the national patent and integrates energy saving, environmental protection and low operation and maintenance costs. The st-proof effect of this fully transparent st cover device is more than 95%, and it can be seen and controlled in the whole working process of the coal conveying belt conveyor, with simple cleaning and low maintenance cost. The fully transparent st cover is installed on the coal conveying belt of coal-fired boiler, which not only solves the st pollution caused by lignite belt transportation and the noise pollution caused by belt conveyor, but also greatly reces the potential fire hazard at the coal conveying site, reces the st, and is more environmentally friendly< At present, the second and third power plants of Waigaoqiao in Shanghai have installed this st cover device. After the installation, the st concentration outside the st cover reaches below the national standard of 4mg / m3 ring the transportation of Indonesian coal by Shanghai Environmental Protection Bureau, and no spontaneous combustion or flash explosion occurs after many years of operation, so the environmental protection effect is very significant.
the st of coal conveying system is mainly coal st. In the process of coal screening, crushing and conveying, there will be st emission. If no measures are taken, the environment and atmosphere of coal conveying site will be polluted. At the same time, coal st contains free silica. The smaller the st particles are, the less easy it is to settle. Once inhaled, human body will deposit in the lung, which will cause fibrous lesions, graally harden the lung tissue, cause various lung diseases, and seriously endanger the health of workers
in addition, the st falls on the rotating part of the machine, which accelerates the mechanical wear; Falling on the electrical equipment will cause poor contact of the electrical equipment and make the control failure of the electrical equipment; Excessive st accumulation on site will also cause st spontaneous combustion and other adverse consequences. In order to ensure the health of coal handling workers, ensure the safe proction of thermal power plant and extend the service life of equipment, comprehensive st control must be carried out in coal handling system of thermal power plant
at present, the existing belt conveyor st suppression device usually adds a spray device in the process of conveying or at the outlet to spray the water to the st removal space in the form of misty particles to rece st pollution. This method has a large demand for water resources
another method is to add st collection bags on the belt conveyor. In the body, st collection port, air outlet, flower plate and several filter bags connected with flower plate and evenly distributed, the st is filtered by the filter bags and falls back to the coal conveying belt, so as to rece the st pollution of the coal conveying belt. However, it needs to be equipped with a fan, and the filter bags need to be regularly maintained and replaced, A large number of filter bags are used on a coal conveying belt, which are replaced frequently and the daily maintenance cost is very high
in addition to the above two kinds of st-proof devices, there is also a fully transparent st-proof cover of coal conveying belt conveyor which has won the national patent and integrates energy saving, environmental protection and low operation and maintenance costs. The st-proof effect of this fully transparent st cover device is more than 95%, and it can be seen and controlled in the whole working process of the coal conveying belt conveyor, with simple cleaning and low maintenance cost. The fully transparent st cover is installed on the coal conveying belt of coal-fired boiler, which not only solves the st pollution caused by lignite belt transportation and the noise pollution caused by belt conveyor, but also greatly reces the potential fire hazard at the coal conveying site, reces the st, and is more environmentally friendly< At present, the second and third power plants of Waigaoqiao in Shanghai have installed this st cover device. After the installation, the st concentration outside the st cover reaches below the national standard of 4mg / m3 ring the transportation of Indonesian coal by Shanghai Environmental Protection Bureau, and no spontaneous combustion or flash explosion occurs after many years of operation, so the environmental protection effect is very significant.
5. There are many kinds and a large number of important parts of idler. It accounts for 35% of the total cost of a belt conveyor and bears more than 70% of the resistance, so the quality of the idler is particularly important
the function of idler is to support the weight of material. The operation of idler must be flexible and reliable. Recing the friction between conveyor belt and idler plays a key role in the service life of conveyor belt which accounts for more than 25% of the total cost of conveyor. Although the idler is a small part in the belt conveyor and its structure is not complex, it is not easy to make high quality idler
there are several criteria to judge whether the idler is good or bad: the radial runout of the idler; Flexibility of idler; Axial displacement
1. It can be divided into rubber roller, ceramic roller, nylon roller and insulating roller according to material
2. There are mainly trough roller group, all kinds of parallel roller group, all kinds of centering roller group, all kinds of buffer roller group
roller, etc
roller support: coal, chemical instry, mining and other transportation fields, applicable to mine accessories, applicable to mining
the function of idler is to support the weight of material. The operation of idler must be flexible and reliable. Recing the friction between conveyor belt and idler plays a key role in the service life of conveyor belt which accounts for more than 25% of the total cost of conveyor. Although the idler is a small part in the belt conveyor and its structure is not complex, it is not easy to make high quality idler
there are several criteria to judge whether the idler is good or bad: the radial runout of the idler; Flexibility of idler; Axial displacement
1. It can be divided into rubber roller, ceramic roller, nylon roller and insulating roller according to material
2. There are mainly trough roller group, all kinds of parallel roller group, all kinds of centering roller group, all kinds of buffer roller group
roller, etc
roller support: coal, chemical instry, mining and other transportation fields, applicable to mine accessories, applicable to mining
6. Autonomous Region.
7. When we witnessed the accidents and mine accidents with our own eyes. When we see our family wailing. Relatives and tears... How to be a good worker's safety guard? The author thinks that the following four aspects should be done well. To really
8. Brief introction: Anshan Mining and Metallurgy Equipment Manufacturing Co., Ltd. is an enterprise specialized in manufacturing coke oven special equipment for metallurgical and coking instries. Over the years, with the enthusiastic support of MCC Anshan jiaonai Engineering Technology Co., Ltd., Sinosteel Equipment Co., Ltd. and the big brother enterprises of various users, the company has actively served the engineering projects and proction enterprises of metallurgical and coking instries at home and abroad, providing a large number of mechanical equipment with reliable quality. The company provides supporting equipment for Shougang Jingtang steel project, Angang, WISCO, Panhua steel, Handan steel, Benxi Steel and other domestic large-scale new construction and expansion projects as well as foreign metallurgical and coking projects such as Brazil and Turkey. Including: furnace door repair station, coal tower and coal silo automatic rotary distributor, transfer platform, 7.63m coke oven exchange transmission device, scraper coke machine, mobile belt conveyor, disc feeder, coke cutter, double toothed roll crusher and vibrating screen and other standard and non-standard mechanical equipment. In the process of proct manufacturing, the company has fully and effectively operated ISO9001:2000 quality system, paid attention to proct quality and adopted advanced proction technology. Vibratory stress relief (VSR) technology is used to eliminate welding stress of metal structure; Adopt metal surface sandblasting technology to enhance the corrosion resistance of proct surface; Semi automatic CO2 gas shielded welding equipment is used in steel structure manufacturing. The main materials of the procts are the procts of domestic large-scale iron and steel enterprises, and the high-quality bearings and mechanical and electrical procts at home and abroad. Through these technical measures, the excellent performance and high standard quality of the proct are effectively guaranteed, and the service life of the proct is improved. In the process of providing procts for users at home and abroad, our company has continuously carried out ecation and training for all staff, shaped the team spirit of unity and enterprising, keeping improving and creating high-grade procts, and achieved remarkable results in improving the professional quality of the company's staff. In the domestic instry, the company designs and manufactures coke oven special equipment for metallurgical and coking instries, which are characterized by exquisite materials, stable quality, long service life, sufficient spare parts, timely after-sales service and no proct quality complaints, and has won praise from new and old users. The company is located at the foot of Qianshan Mountain with beautiful scenery and the reputation of "the first famous mountain in Northeast China"; It is only five kilometers away from the Jade Buddha garden, which is dedicated to the world's largest jade Buddha. Under the guidance of Chairman Wu Yatian, the company's employees faithfully believe in the business philosophy of "users are God, quality is life", and carry out timely and enthusiastic after-sales service. The company's "Yuhong" trademark won the "Chinese famous brand"; The company has been awarded the honorary titles of "AAA class well-known enterprise in Liaoning Province", "advanced enterprise", "star enterprise", "contract abiding and credit respecting unit" and "inspection free enterprise"
legal representative: Gao Yang
time of establishment: December 14, 1979
registered capital: RMB 5.16 million
business registration number: 2103000005123
enterprise type: limited liability company (invested or controlled by natural person)
Company Address: No.12 Pingshan street, Lishan District, Anshan City
legal representative: Gao Yang
time of establishment: December 14, 1979
registered capital: RMB 5.16 million
business registration number: 2103000005123
enterprise type: limited liability company (invested or controlled by natural person)
Company Address: No.12 Pingshan street, Lishan District, Anshan City
9. Installation standard of belt conveyor protection device
I. protection to be installed for belt conveyor
1. Anti skid protection for driving roller, 2. Coal stacking protection, 3. Anti deviation device, 4. Temperature protection, 5. Smoke protection, 6. Automatic sprinkler for over temperature, 7. Emergency stop protection device along the belt conveyor roadway,
8. The belt conveyor installed in the main transportation roadway should also be equipped with:
(1) belt tension drop protection device and anti tearing protection device
(2) protective fence at the head and tail of the machine to prevent personnel from contacting with the driving roller or guide roller
(3) the belt conveyor used in inclined shaft must be equipped with anti reversing device and braking device when it is transported upward; The braking device must be installed when transporting down< The function and installation position of all kinds of protection:
1. Anti skid protection device
the function of anti-skid protection device is to stop the belt conveyor automatically when the driving roller and the conveyor belt slide and rub
magnet type: the magnet should be installed on the side of the driven roller, and the speed sensor should be installed on the bracket corresponding to the magnet. When the speed of the belt conveyor roller is lower than the set value and remains for 5 seconds, the belt conveyor will automatically shut down
roller type anti-skid protection: the sensor is installed above the lower belt or below the upper belt
2. Coal stacking protection device
the function of the coal stacking protection device is to make the belt conveyor stop automatically when the coal is piled on the belt conveyor
the installation of coal storage protection device can be divided into two situations:
one is installed at the upper entrance of coal bunker. The installation height of coal storage protection sensor should be less than 200 mm below the belt under the machine head, and its plane position should be within the range of coal bunker entrance. When the coal accumulation touches the coal storage protection probe, the protector will automatically stop and give an alarm
the other is installed at the lap joint of two belt conveyors. The installation height of the coal stacking protection sensor at the lap joint of two belt conveyors should be below the axis of the drum at the head of the rear conveyor, and its plane position should be in the coal flow direction of the front belt conveyor, and the distance should be 200-300 mm from the side of the front belt conveyor frame. When the coal stacking touches the coal stacking protection probe, the coal stacking protection sensor should be installed in the front belt conveyor, The protector will stop automatically and give an alarm
3. Anti deviation protection device
the function of anti deviation protection device is to make the conveyor belt automatically correct deviation when the conveyor belt deviates; In case of serious deviation, the conveyor will stop automatically
(1) a group of deviation protection sensors are installed at the head and tail of the belt conveyor in use. When the belt of the belt conveyor deviates, the belt pushes the arm type rolling guide rod. When the deviation angle is greater than 200 (the allowable error is 0 ± The main engine of the protector will give an alarm, but it will not stop; After 5-10S delay, if the tape is still in the state of deviation, the protector host will automatically cut off the power supply to realize deviation protection
(2) for the main belt conveyor in use, the automatic deviation correction device is installed in the middle part. When the belt deviates, the automatic deviation correction device deflects and makes the belt reset automatically; The belt conveyor for fully mechanized excavation is equipped with anti deviation and anti wheel to prevent belt deviation
the anti deviation device should be installed within the range of 50-100 mm from the outer edge of the trough idler, with a group installed every 50 m for the upper belt and a group installed every 100 m for the lower belt
4. Temperature protection, smoke protection and automatic sprinkling device
the functions of temperature protection, smoke protection and automatic sprinkling device are to monitor the temperature and smoke protection device, send out sound and light signals, and realize automatic shutdown when the conveyor belt slips on the driving roller, causing friction between the conveyor belt and the driving roller, causing temperature rise and generating smoke
(1) the sensor temperature setting value of temperature protection device is 500C, when the temperature is higher than the setting value ± At 30C, the protector will stop automatically
it should be installed near the driving roller of the belt conveyor, and the temperature probe should be installed at 5-10 mm of the contact surface between the driving roller of the belt conveyor and the belt, and it should be connected with solenoid valve and water supply pipeline
(2) when there is smoke around the belt conveyor and reaches a certain concentration, the protector will automatically give an audible and visual alarm and stop automatically
it is suspended at the belt tension section, 0.6-0.8m above the upper belt, and at the lower air outlet within 5m from the driving drum in the downward direction of air flow
(3) the automatic sprinkling device should be installed on both sides of the conveyor drive device. When sprinkling water, it can extinguish the fire and rece the temperature of the drive belt and drive drum at the same time. The valve of the water source should be normally open
(4) the fusible bar should be installed at the separation place between the driving roller and the belt, and within 100 mm from the surface of the roller. Fusible rod fusing temperature is 550c ± When the ambient temperature reaches 500c-600c and lasts for 3-5 minutes, the soluble rod will dissolve automatically
5. Tension drop protection device
the function of tension drop protection device is to make the conveyor stop automatically and give an alarm when the tension of the conveyor belt drops and the slip occurs between the conveyor belt and the driving drum
6. Anti reverse device
the function of anti reverse device is to prevent the reverse runaway accident of upward belt conveyor
roller type backstop protection device and other effective setting anti reversing device must be equipped for the in use upper belt conveyor
7. Braking device
the function of the braking device is to prevent the upward conveyor from reversing and make the downward belt conveyor stop in time
in use inclined belt conveyor must be equipped with perfect braking device
8. Emergency stop protection device along the line
a emergency stop switch shall be installed every 100m in the conveyor roadway, and emergency stop switches shall be set at the loading point, pedestrian crossing bridge, head and tail of the machine, and the switch signal shall be connected to the belt conveyor control system
9. Anti tearing protection device
the function of anti tearing protection device is to stop the conveyor automatically when the conveyor is torn, so as to prevent the expansion of tearing accident< There are two test methods for anti-skid protection device: one is the inctive anti-skid protection device, which can stop the belt conveyor automatically by turning the sensor direction; the other is the inctive anti-skid protection device; The other is to lift the roller away from the belt surface, and the belt conveyor should stop automatically
test cycle of anti-skid protection device: it should be tested once a day ring maintenance, and test records should be filled in
2. Coal stacking protection
Coal stacking protection test method: when the belt conveyor is in normal operation, manually push the coal stacking protection sensor contact to make the protection action, and the belt conveyor will stop automatically
test cycle of coal stacking protection: the test shall be concted once a day ring maintenance, and the test records shall be filled in
3. Deviation protection
deviation protection test method: when the belt conveyor is in normal operation, manually push the rolling guide rod of the deviation sensor, and the limit switch will act after a delay of 5-10S, so as to stop the machine automatically
deviation protection test cycle: the test should be concted once a day ring maintenance, and the test records should be filled in
4. Temperature protection device
the temperature protection sensor should be checked by the user once a day and replaced every three months. When replacing, the user should go to the mechanical and electrical department to get qualified sensors in advance, and the old sensors after replacement should be submitted to the mechanical and electrical department for test in time
5. Smoke protection device
the smoke sensor should be checked once a day and replaced once a month. The user should go to the mechanical and electrical department in advance to get qualified smoke sensors, go down the well to replace the old smoke sensors, and submit them to the mechanical and electrical department for test
6. Automatic sprinkling device
Test Method of automatic sprinkling device: when the belt conveyor is in normal operation, after artificially loosening the tension rope of fusible rod, the sprinkler can spray water, and it is normal to shut down after power failure
test cycle of automatic sprinkler: it should be tested once a day ring maintenance, and test records should be filled in
7. Tension drop protection device
tension drop protection device test method: when the conveyor is stopped, for the hydraulic sensor type tension drop protection device, manually loosen the overflow valve of the hydraulic station of the tension device slowly. When the pressure is lower than the specified value, the low pressure fault indicator of the fault display panel is on as normal
for the travel switch type
tension drop protection device, if the switch is manually touched, the fault indicator light should be on
test cycle of tension drop protection device: it should be tested once a day ring maintenance, and test records should be filled in< 4. Test system
1. Before the test, the test personnel must contact the driver of the conveyor central control room, the driver of the front and rear conveyors and the driver of each loading point of the conveyor to confirm that there is no error before the test
2. After the protection test of the conveyor, the tester must fill in the test record and sign on the spot. If any problem is found, the maintenance personnel on ty shall be informed in time to deal with it. It is strictly forbidden to throw off or remove all kinds of protective devices< 5. Other regulations
1. The head, tail, driving section, coal feeding point, upper opening of coal bunker and other rotating parts must be equipped with guardrails and shields. The machine head coal bunker is equipped with qualified safety belt, which must be used when working near the upper entrance of the coal bunker, and the system of one person working and one person monitoring shall be strictly implemented
2. Where someone crosses the belt conveyor in the lane, a bridge must be set up
3. There is a safe distance of 0.4m between the belt and the floor, and there is no belt grinding or coal accumulation; There is a safe distance of not less than 0.5m between the side beam of belt conveyor and the roadway wall; The distance between the nose and tail of the machine and the roadway side shall not be less than 0.7m
5. Sweepers shall be installed in front of the belt running at the unloading point and loading point of the belt conveyor, in front of the driving point and in front of the tail tube. The contact area of the sweeper shall not be less than 80%, and the cleaned belt surface shall not be sticky with slime.
I. protection to be installed for belt conveyor
1. Anti skid protection for driving roller, 2. Coal stacking protection, 3. Anti deviation device, 4. Temperature protection, 5. Smoke protection, 6. Automatic sprinkler for over temperature, 7. Emergency stop protection device along the belt conveyor roadway,
8. The belt conveyor installed in the main transportation roadway should also be equipped with:
(1) belt tension drop protection device and anti tearing protection device
(2) protective fence at the head and tail of the machine to prevent personnel from contacting with the driving roller or guide roller
(3) the belt conveyor used in inclined shaft must be equipped with anti reversing device and braking device when it is transported upward; The braking device must be installed when transporting down< The function and installation position of all kinds of protection:
1. Anti skid protection device
the function of anti-skid protection device is to stop the belt conveyor automatically when the driving roller and the conveyor belt slide and rub
magnet type: the magnet should be installed on the side of the driven roller, and the speed sensor should be installed on the bracket corresponding to the magnet. When the speed of the belt conveyor roller is lower than the set value and remains for 5 seconds, the belt conveyor will automatically shut down
roller type anti-skid protection: the sensor is installed above the lower belt or below the upper belt
2. Coal stacking protection device
the function of the coal stacking protection device is to make the belt conveyor stop automatically when the coal is piled on the belt conveyor
the installation of coal storage protection device can be divided into two situations:
one is installed at the upper entrance of coal bunker. The installation height of coal storage protection sensor should be less than 200 mm below the belt under the machine head, and its plane position should be within the range of coal bunker entrance. When the coal accumulation touches the coal storage protection probe, the protector will automatically stop and give an alarm
the other is installed at the lap joint of two belt conveyors. The installation height of the coal stacking protection sensor at the lap joint of two belt conveyors should be below the axis of the drum at the head of the rear conveyor, and its plane position should be in the coal flow direction of the front belt conveyor, and the distance should be 200-300 mm from the side of the front belt conveyor frame. When the coal stacking touches the coal stacking protection probe, the coal stacking protection sensor should be installed in the front belt conveyor, The protector will stop automatically and give an alarm
3. Anti deviation protection device
the function of anti deviation protection device is to make the conveyor belt automatically correct deviation when the conveyor belt deviates; In case of serious deviation, the conveyor will stop automatically
(1) a group of deviation protection sensors are installed at the head and tail of the belt conveyor in use. When the belt of the belt conveyor deviates, the belt pushes the arm type rolling guide rod. When the deviation angle is greater than 200 (the allowable error is 0 ± The main engine of the protector will give an alarm, but it will not stop; After 5-10S delay, if the tape is still in the state of deviation, the protector host will automatically cut off the power supply to realize deviation protection
(2) for the main belt conveyor in use, the automatic deviation correction device is installed in the middle part. When the belt deviates, the automatic deviation correction device deflects and makes the belt reset automatically; The belt conveyor for fully mechanized excavation is equipped with anti deviation and anti wheel to prevent belt deviation
the anti deviation device should be installed within the range of 50-100 mm from the outer edge of the trough idler, with a group installed every 50 m for the upper belt and a group installed every 100 m for the lower belt
4. Temperature protection, smoke protection and automatic sprinkling device
the functions of temperature protection, smoke protection and automatic sprinkling device are to monitor the temperature and smoke protection device, send out sound and light signals, and realize automatic shutdown when the conveyor belt slips on the driving roller, causing friction between the conveyor belt and the driving roller, causing temperature rise and generating smoke
(1) the sensor temperature setting value of temperature protection device is 500C, when the temperature is higher than the setting value ± At 30C, the protector will stop automatically
it should be installed near the driving roller of the belt conveyor, and the temperature probe should be installed at 5-10 mm of the contact surface between the driving roller of the belt conveyor and the belt, and it should be connected with solenoid valve and water supply pipeline
(2) when there is smoke around the belt conveyor and reaches a certain concentration, the protector will automatically give an audible and visual alarm and stop automatically
it is suspended at the belt tension section, 0.6-0.8m above the upper belt, and at the lower air outlet within 5m from the driving drum in the downward direction of air flow
(3) the automatic sprinkling device should be installed on both sides of the conveyor drive device. When sprinkling water, it can extinguish the fire and rece the temperature of the drive belt and drive drum at the same time. The valve of the water source should be normally open
(4) the fusible bar should be installed at the separation place between the driving roller and the belt, and within 100 mm from the surface of the roller. Fusible rod fusing temperature is 550c ± When the ambient temperature reaches 500c-600c and lasts for 3-5 minutes, the soluble rod will dissolve automatically
5. Tension drop protection device
the function of tension drop protection device is to make the conveyor stop automatically and give an alarm when the tension of the conveyor belt drops and the slip occurs between the conveyor belt and the driving drum
6. Anti reverse device
the function of anti reverse device is to prevent the reverse runaway accident of upward belt conveyor
roller type backstop protection device and other effective setting anti reversing device must be equipped for the in use upper belt conveyor
7. Braking device
the function of the braking device is to prevent the upward conveyor from reversing and make the downward belt conveyor stop in time
in use inclined belt conveyor must be equipped with perfect braking device
8. Emergency stop protection device along the line
a emergency stop switch shall be installed every 100m in the conveyor roadway, and emergency stop switches shall be set at the loading point, pedestrian crossing bridge, head and tail of the machine, and the switch signal shall be connected to the belt conveyor control system
9. Anti tearing protection device
the function of anti tearing protection device is to stop the conveyor automatically when the conveyor is torn, so as to prevent the expansion of tearing accident< There are two test methods for anti-skid protection device: one is the inctive anti-skid protection device, which can stop the belt conveyor automatically by turning the sensor direction; the other is the inctive anti-skid protection device; The other is to lift the roller away from the belt surface, and the belt conveyor should stop automatically
test cycle of anti-skid protection device: it should be tested once a day ring maintenance, and test records should be filled in
2. Coal stacking protection
Coal stacking protection test method: when the belt conveyor is in normal operation, manually push the coal stacking protection sensor contact to make the protection action, and the belt conveyor will stop automatically
test cycle of coal stacking protection: the test shall be concted once a day ring maintenance, and the test records shall be filled in
3. Deviation protection
deviation protection test method: when the belt conveyor is in normal operation, manually push the rolling guide rod of the deviation sensor, and the limit switch will act after a delay of 5-10S, so as to stop the machine automatically
deviation protection test cycle: the test should be concted once a day ring maintenance, and the test records should be filled in
4. Temperature protection device
the temperature protection sensor should be checked by the user once a day and replaced every three months. When replacing, the user should go to the mechanical and electrical department to get qualified sensors in advance, and the old sensors after replacement should be submitted to the mechanical and electrical department for test in time
5. Smoke protection device
the smoke sensor should be checked once a day and replaced once a month. The user should go to the mechanical and electrical department in advance to get qualified smoke sensors, go down the well to replace the old smoke sensors, and submit them to the mechanical and electrical department for test
6. Automatic sprinkling device
Test Method of automatic sprinkling device: when the belt conveyor is in normal operation, after artificially loosening the tension rope of fusible rod, the sprinkler can spray water, and it is normal to shut down after power failure
test cycle of automatic sprinkler: it should be tested once a day ring maintenance, and test records should be filled in
7. Tension drop protection device
tension drop protection device test method: when the conveyor is stopped, for the hydraulic sensor type tension drop protection device, manually loosen the overflow valve of the hydraulic station of the tension device slowly. When the pressure is lower than the specified value, the low pressure fault indicator of the fault display panel is on as normal
for the travel switch type
tension drop protection device, if the switch is manually touched, the fault indicator light should be on
test cycle of tension drop protection device: it should be tested once a day ring maintenance, and test records should be filled in< 4. Test system
1. Before the test, the test personnel must contact the driver of the conveyor central control room, the driver of the front and rear conveyors and the driver of each loading point of the conveyor to confirm that there is no error before the test
2. After the protection test of the conveyor, the tester must fill in the test record and sign on the spot. If any problem is found, the maintenance personnel on ty shall be informed in time to deal with it. It is strictly forbidden to throw off or remove all kinds of protective devices< 5. Other regulations
1. The head, tail, driving section, coal feeding point, upper opening of coal bunker and other rotating parts must be equipped with guardrails and shields. The machine head coal bunker is equipped with qualified safety belt, which must be used when working near the upper entrance of the coal bunker, and the system of one person working and one person monitoring shall be strictly implemented
2. Where someone crosses the belt conveyor in the lane, a bridge must be set up
3. There is a safe distance of 0.4m between the belt and the floor, and there is no belt grinding or coal accumulation; There is a safe distance of not less than 0.5m between the side beam of belt conveyor and the roadway wall; The distance between the nose and tail of the machine and the roadway side shall not be less than 0.7m
5. Sweepers shall be installed in front of the belt running at the unloading point and loading point of the belt conveyor, in front of the driving point and in front of the tail tube. The contact area of the sweeper shall not be less than 80%, and the cleaned belt surface shall not be sticky with slime.
10. It can be divided into three types: strong belt conveyor, ordinary belt conveyor and special purpose belt conveyor. The powerful belt conveyor is mainly used in the main transportation roadway of the mine, as the main transportation equipment of the mine. The ordinary belt conveyor is mainly used in the transportation of the mining face of the mine, and can be used as the auxiliary transportation equipment of the mine. The special purpose belt conveyor, such as the inclined roadway transportation slope is greater than 30 degrees - 90 degrees, can use the special belt conveyor such as the corrugated edge belt conveyor.
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