How long can ATR top miner live
Publish: 2021-04-24 19:07:16
1. Generally speaking, the employees of the purified water plant can be divided into the fourth category. There are seven types of occupations in insurance:
1. Most of the occupations are people who sit still in the office, and the working environment is very safe. Such as: cashier, accountant
2. People who are clerical but occasionally leave the company for work reasons, such as salesman
3. Category refers to the staff who often work outside. Such as car driver, etc
4. Class occupation generally requires manual labor, such as truck driver and general worker
5. The first class occupation is workers working at height or operating machinery. Such as Turner, Miller, construction personnel, etc
6. There may not be many accidents in this kind of occupation, but once it happens, it will be a serious instry. Such as: oil pipeline cleaning workers
7. Class A is a high-risk instry, which is the instry that insurance companies refuse to cover. Such as miners, etc.
1. Most of the occupations are people who sit still in the office, and the working environment is very safe. Such as: cashier, accountant
2. People who are clerical but occasionally leave the company for work reasons, such as salesman
3. Category refers to the staff who often work outside. Such as car driver, etc
4. Class occupation generally requires manual labor, such as truck driver and general worker
5. The first class occupation is workers working at height or operating machinery. Such as Turner, Miller, construction personnel, etc
6. There may not be many accidents in this kind of occupation, but once it happens, it will be a serious instry. Such as: oil pipeline cleaning workers
7. Class A is a high-risk instry, which is the instry that insurance companies refuse to cover. Such as miners, etc.
2. If one of the mobile phone number and email in the member's account has been verified, the member can modify the login password through the password recovery function in the login interface
3.
In recent years, after independent research and development and systematic research, a large number of procts have appeared in Hunan Province, which have reached or even exceeded the international advanced level of similar technology. From construction machinery to agricultural procts, from the application of science and technology to cultural innovation... For a long time, in order to further implement and promote the strategy of "innovation leads the rise of opening up", Hunan people and enterprises who dare to be the first have never stopped on the road of pursuing instry-leading and world-class technology. What is the story behind these amazing innovative procts
In addition, according to the geological characteristics and technical difficulties of "long distance, large buried depth, high stress, high water pressure, high ground temperature, large water inflow and easy rock burst", the "Changchun" TBM worth 180 million yuan has been developed< br />4. Roadheader is a machine used for digging straight underground roadway. Roadheader is divided into open roadheader and shield roadheader. Prices generally range from 2 million yuan to 8 million yuan. It is mainly composed of walking mechanism, working mechanism, loading mechanism and transfer mechanism. As the walking mechanism moves forward, the cutting head in the working mechanism continuously breaks the rock and transports the broken rock away. It has the advantages of safety, high efficiency and good quality, but the cost is large, the structure is complex, and the loss is also large
operation method:
1. Drivers should have junior high school ecation or above, love their own work, have a strong sense of responsibility, and pass the special training and examination before they can take up their posts with certificates
2. The driver must be familiar with the structure, performance and operation principle of the machine, be able to operate the machine accurately and skillfully, and understand the general maintenance and troubleshooting knowledge of the equipment
3. The driver must insist on using all the safety locking and protection devices on the roadheader, and shall not change or discard them without authorization, and shall not adjust the pressure of hydraulic system and atomization system at will
4. The operating handles, buttons and indicating instruments of various electrical equipment control switches should be properly protected to prevent damage or loss
5. In addition to skilled operation of the machine, daily inspection and maintenance of the machine should also be carried out. When the roadheader is found to have a fault, it should actively cooperate with the maintenance personnel to deal with it. If it cannot be dealt with, it should immediately report to the district team or the dispatching room
6. There must be two drivers, the first driver is responsible for operation and the second driver is responsible for monitoring. Must concentrate, must not leave the post without authorization, must not entrust personnel without a license to operate
7. When the roadheader stops working, overhauling and shifting, it is necessary to turn off the isolating switch on the machine and hang the power failure sign
8. For the operation of the machine and the existing problems, the handover driver must explain clearly to the successor driver
9. When the gas concentration in the air flow within 20 meters before and after the roadheader reaches 1.5%, it must stop running, cut off the power supply and deal with it. When the gas concentration must be reced to less than 1%, the power can be turned on
10. After taking over the shift, the driver should carefully check the working face and the surrounding conditions of the roadheader to ensure that the working area is safe, clean and free of obstacles.
operation method:
1. Drivers should have junior high school ecation or above, love their own work, have a strong sense of responsibility, and pass the special training and examination before they can take up their posts with certificates
2. The driver must be familiar with the structure, performance and operation principle of the machine, be able to operate the machine accurately and skillfully, and understand the general maintenance and troubleshooting knowledge of the equipment
3. The driver must insist on using all the safety locking and protection devices on the roadheader, and shall not change or discard them without authorization, and shall not adjust the pressure of hydraulic system and atomization system at will
4. The operating handles, buttons and indicating instruments of various electrical equipment control switches should be properly protected to prevent damage or loss
5. In addition to skilled operation of the machine, daily inspection and maintenance of the machine should also be carried out. When the roadheader is found to have a fault, it should actively cooperate with the maintenance personnel to deal with it. If it cannot be dealt with, it should immediately report to the district team or the dispatching room
6. There must be two drivers, the first driver is responsible for operation and the second driver is responsible for monitoring. Must concentrate, must not leave the post without authorization, must not entrust personnel without a license to operate
7. When the roadheader stops working, overhauling and shifting, it is necessary to turn off the isolating switch on the machine and hang the power failure sign
8. For the operation of the machine and the existing problems, the handover driver must explain clearly to the successor driver
9. When the gas concentration in the air flow within 20 meters before and after the roadheader reaches 1.5%, it must stop running, cut off the power supply and deal with it. When the gas concentration must be reced to less than 1%, the power can be turned on
10. After taking over the shift, the driver should carefully check the working face and the surrounding conditions of the roadheader to ensure that the working area is safe, clean and free of obstacles.
5.
1. Ebz318 (H) cantilever roadheader: This roadheader is equipped with long pressure and short suction bath type st removal system, with small water consumption and high st removal efficiency, with st removal efficiency of 95%. The weight of the whole machine is 125 tons (including the second transportation and st removal system), the undercover depth is 220 mm, and the cutting motor power is 318 kW
Ebz260d cantilever roadheader: This roadheader has large cutting face, wide applicability, and high stability (heavy machine weight and small vibration) and can be used in coal roadway, semi coal rock roadway and whole rock roadway. The weight of the whole machine is 91 tons (including the second transportation and st removal system), the undercover depth is 384 mm, and the cutting motor power is 260 / 200 kW Ebz230h boom type roadheader: the roadheader has a large cutting face of 30m2 and is suitable for semi coal and whole rock environment with high stability, large machine weight and small vibration. The whole machine weighs 77 tons (including the second transportation and st removal system), the undercover depth is 190 mm, and the cutting motor power is 230 kW Ebz200 cantilever roadheader: This roadheader has a large cutting face of 33 m2, which is suitable for all coal, half coal and soft rock environment. It has high stability, compact structure, small vibration, convenient construction, double speed load cutting and retractable cutting part. The whole machine weighs 90 tons (including the second transportation and st removal system), the undercover depth is 185mm, and the cutting motor power is 260kw Ebz200h boom type roadheader: the roadheader has a large cutting face of 30m3, which can be formed at one time. It is suitable for all coal, half coal and soft rock environment. Secondly, it has compact structure and small vibration. It has the quick construction function of double speed load cutting and retractable cutting part, with the weight of 86 tons (including the second transportation and st removal system), the undercover depth of 200 mm, and the cutting motor power of 200 / 150 kW6. 1. Good shearer: Jixi coal machinery factory, founded in Shanghai< The largest roadheader is Sany Heavy Instry, accounting for 30% of the market, with high price and high configuration; The second is Jiamusi coal machinery plant, which is now acquired by imm; The third is Taiyuan Academy of Coal Sciences, which accounts for 90% of the market share
3. As for the addresses of major manufacturers, they can be found on LZ network
our company also makes roadheader and shearer, but it is not famous, but the price is cheap.
3. As for the addresses of major manufacturers, they can be found on LZ network
our company also makes roadheader and shearer, but it is not famous, but the price is cheap.
7. We know Jiamusi roadheader and Jixi shearer< Jiamusi Coal mining Machinery Co., Ltd., a wholly-owned subsidiary of Joy Global International Coal Machinery Co., Ltd., was founded in 1957. It is a national designated roadheader manufacturer. At present, the company has 13 series of roadheader procts with more than 30 varieties, including ebz55, ebz100, ebz120, ebz132, EBZ135, EBZ150, EBZ160, ebz200, ebz220, ebz230, ebz260, ebz300, ebz350, etc., forming light, medium and heavy-ty roadheader procts Full coverage of heavy aircraft
Jixi comprehensive coal shearer manufacturing Co., Ltd. is located in Jixi City, Heilongjiang Province. It is a formal Enterprise with national recognized business qualification. The company is mainly engaged in R & D, proction, sales and after-sales service of shearer accessories. The company has a number of proction plants, more than 150 employees, according to the regional division of the procts sold, tracking service at all times, to eliminate all quality risks. Mainly engaged in shearer accessories, all kinds of pumps and valves, standard parts, seals, imported bearings, all kinds of coal mining electromechanical devices, professional shearer overhaul, etc.
Jixi comprehensive coal shearer manufacturing Co., Ltd. is located in Jixi City, Heilongjiang Province. It is a formal Enterprise with national recognized business qualification. The company is mainly engaged in R & D, proction, sales and after-sales service of shearer accessories. The company has a number of proction plants, more than 150 employees, according to the regional division of the procts sold, tracking service at all times, to eliminate all quality risks. Mainly engaged in shearer accessories, all kinds of pumps and valves, standard parts, seals, imported bearings, all kinds of coal mining electromechanical devices, professional shearer overhaul, etc.
8. In the part of hydraulic system design, the hydraulic principle and parameter calculation of each part are basically determined. This paper analyzes and calculates the load analysis of
cutting part, walking mechanism, shipping mechanism and intermediate conveyor. Determination of motor part: star wheel mechanism of loading part, driving motor of walking mechanism, driving motor of intermediate conveyor, etc. Determination of oil cylinder: Calculation and design of lifting oil cylinder, rotary
oil cylinder, telescopic oil cylinder, tension oil cylinder of crawler walking mechanism and lifting oil cylinder of shovel plate
in the structure design part of the hydraulic cylinder, the mechanism design calculation of the telescopic cylinder is carried out, and the part drawing is drawn. The
parameters of the pumping station and the hydraulic system are calculated to evaluate the performance of the hydraulic system< At last, the trafficability and stability of roadheader are analyzed
key words: longitudinal roadheader; Overall scheme design; Hydraulic system design
Chinese Library Classification No.: th
1 Introction
1.1 current research level of roadheader at home and abroad
in recent years, with the rapid development of China's coal instry, the coal machine instry, which is closely related to it, has been paid more and more attention. In the programmatic document of
coal instry "several opinions on promoting the healthy development of coal instry", in the national coal instry science and Technology Conference and the coal instry structure adjustment policy issued by the national development and Reform Commission, the development of large coal underground comprehensive
mining equipment is involved
tunneling and stoping are important proction links in coal mine proction. The national policy is to pay equal attention to mining and excavation, and tunneling first. The rapid excavation of
roadway in coal mine is the key technical measure to ensure the high and stable proction of coal mine. Mining technology and equipment level are directly related to
coal mine proction capacity and safety. Efficient mechanized tunneling and support technology is the necessary condition to ensure high yield and efficiency of mine,
is also the development direction of roadway tunneling technology. With the development of fully mechanized mining technology, super working face with an annual output of several million tons or even
10 million tons has appeared in China, which greatly increases the number of mining roadways consumed annually, and makes roadway excavation become the common and key technology of efficient
intensive proction in coal mines
the most important way of efficient coal roadway driving in China is the supporting operation line of cantilever roadheader and single roof bolter, also known as comprehensive mechanized coal roadway driving, which has been widely used in China's state-owned key coal mines, and the main driving machine is cantilever roadheader
the development and application of cantilevered roadheader for coal roadway in China began in the 1960s, with 30-50kw low-power roadheader as the main part, and its research, development and proction are in the experimental stage. In the early 1980s, China's Huainan coal machinery plant (now reorganized as
Kaisheng heavy instry) introced AM50 roadheader from Austria VAI and Jiamusi coal machinery plant (now affiliated to international coal machinery)
introced S-100 roadheader from Mitsui Sanchi proction Institute of Japan. Through the introction, digestion and absorption of foreign advanced technology, it promoted the development of China's comprehensive excavation mechanization. However, the roadheader technology introced at that time was at the level of the 1970s, with low power, light weight, low rock breaking capacity and poor reliability. It was only suitable for use in coal roadways with good conditions. In addition to the manufacturing defects of domestic roadheader,
exposed many problems in use. China has further strengthened the digestion and absorption of imported machines, and actively developed comprehensive mechanized tunneling equipment suitable for China's geological conditions and proction technology. After nearly 30 years of digestion, absorption and independent research and development,
- 2 -
at present, China has formed an annual proction capacity of more than 1000 roadheader, developed and proced more than 20 types of roadheader,
its cutting power is from 30kW to 200kW, initially forming a series of procts, especially in recent years, China has successively developed the replacement models represented by
EBJ-120TP roadheader, which has reached the international advanced level in terms of overall technical performance. It can basically meet the demand of domestic semi coal and Rock Roadheader market. Semi coal and Rock Roadheader is mainly medium and heavy machine, which can cut rock with hardness
F = 6 ~ 8, cutting power above 120kw and machine weight above 35t. At present, the mainstream semi coal rock roadheader in coal mine is mainly EBJ-120TP, ebz160ty proced by Taiyuan Research Institute of General Academy of Coal Sciences and S150J proced by Jiamusi coal machinery plant, accounting for more than 80% of the usage of semi coal rock roadheader< However, drilling and blasting method is still the main method for rock roadway construction in China, and heavy cantilever roadheader is in the experimental stage in China, but domestic coal proction is graally developing towards high yield, high efficiency and safety, and coal mine technical equipment is developing towards heavy, large-scale, powerful, high-power and electromechanical integration, Xinji Energy Co., Ltd., Xinwen Mining Group, Huainan Mining Group and Pingdingshan Coal Group Co., Ltd. have successively introced German wav300, Austrian ahm105 and British MK3 heavy cantilever roadheader. All rock roadway heavy cantilever roadheader represents the development direction of rock roadway driving technology in the future< Although Sany Heavy Equipment Co., Ltd. launched the first ebz200h Hard Rock Roadheader in China last year, the gap between domestic heavy-ty roadheader and foreign advanced equipment is not only low in overall performance parameters, but also weak in basic research. The load spectrum of cutting, shipping and walking parts suitable for China's coal mine geological conditions has not been established, and there is no complete theoretical basis for design, The
aspect of computer dynamic simulation is still blank; In component reliability, control technology, in cutting
cutting part, walking mechanism, shipping mechanism and intermediate conveyor. Determination of motor part: star wheel mechanism of loading part, driving motor of walking mechanism, driving motor of intermediate conveyor, etc. Determination of oil cylinder: Calculation and design of lifting oil cylinder, rotary
oil cylinder, telescopic oil cylinder, tension oil cylinder of crawler walking mechanism and lifting oil cylinder of shovel plate
in the structure design part of the hydraulic cylinder, the mechanism design calculation of the telescopic cylinder is carried out, and the part drawing is drawn. The
parameters of the pumping station and the hydraulic system are calculated to evaluate the performance of the hydraulic system< At last, the trafficability and stability of roadheader are analyzed
key words: longitudinal roadheader; Overall scheme design; Hydraulic system design
Chinese Library Classification No.: th
1 Introction
1.1 current research level of roadheader at home and abroad
in recent years, with the rapid development of China's coal instry, the coal machine instry, which is closely related to it, has been paid more and more attention. In the programmatic document of
coal instry "several opinions on promoting the healthy development of coal instry", in the national coal instry science and Technology Conference and the coal instry structure adjustment policy issued by the national development and Reform Commission, the development of large coal underground comprehensive
mining equipment is involved
tunneling and stoping are important proction links in coal mine proction. The national policy is to pay equal attention to mining and excavation, and tunneling first. The rapid excavation of
roadway in coal mine is the key technical measure to ensure the high and stable proction of coal mine. Mining technology and equipment level are directly related to
coal mine proction capacity and safety. Efficient mechanized tunneling and support technology is the necessary condition to ensure high yield and efficiency of mine,
is also the development direction of roadway tunneling technology. With the development of fully mechanized mining technology, super working face with an annual output of several million tons or even
10 million tons has appeared in China, which greatly increases the number of mining roadways consumed annually, and makes roadway excavation become the common and key technology of efficient
intensive proction in coal mines
the most important way of efficient coal roadway driving in China is the supporting operation line of cantilever roadheader and single roof bolter, also known as comprehensive mechanized coal roadway driving, which has been widely used in China's state-owned key coal mines, and the main driving machine is cantilever roadheader
the development and application of cantilevered roadheader for coal roadway in China began in the 1960s, with 30-50kw low-power roadheader as the main part, and its research, development and proction are in the experimental stage. In the early 1980s, China's Huainan coal machinery plant (now reorganized as
Kaisheng heavy instry) introced AM50 roadheader from Austria VAI and Jiamusi coal machinery plant (now affiliated to international coal machinery)
introced S-100 roadheader from Mitsui Sanchi proction Institute of Japan. Through the introction, digestion and absorption of foreign advanced technology, it promoted the development of China's comprehensive excavation mechanization. However, the roadheader technology introced at that time was at the level of the 1970s, with low power, light weight, low rock breaking capacity and poor reliability. It was only suitable for use in coal roadways with good conditions. In addition to the manufacturing defects of domestic roadheader,
exposed many problems in use. China has further strengthened the digestion and absorption of imported machines, and actively developed comprehensive mechanized tunneling equipment suitable for China's geological conditions and proction technology. After nearly 30 years of digestion, absorption and independent research and development,
- 2 -
at present, China has formed an annual proction capacity of more than 1000 roadheader, developed and proced more than 20 types of roadheader,
its cutting power is from 30kW to 200kW, initially forming a series of procts, especially in recent years, China has successively developed the replacement models represented by
EBJ-120TP roadheader, which has reached the international advanced level in terms of overall technical performance. It can basically meet the demand of domestic semi coal and Rock Roadheader market. Semi coal and Rock Roadheader is mainly medium and heavy machine, which can cut rock with hardness
F = 6 ~ 8, cutting power above 120kw and machine weight above 35t. At present, the mainstream semi coal rock roadheader in coal mine is mainly EBJ-120TP, ebz160ty proced by Taiyuan Research Institute of General Academy of Coal Sciences and S150J proced by Jiamusi coal machinery plant, accounting for more than 80% of the usage of semi coal rock roadheader< However, drilling and blasting method is still the main method for rock roadway construction in China, and heavy cantilever roadheader is in the experimental stage in China, but domestic coal proction is graally developing towards high yield, high efficiency and safety, and coal mine technical equipment is developing towards heavy, large-scale, powerful, high-power and electromechanical integration, Xinji Energy Co., Ltd., Xinwen Mining Group, Huainan Mining Group and Pingdingshan Coal Group Co., Ltd. have successively introced German wav300, Austrian ahm105 and British MK3 heavy cantilever roadheader. All rock roadway heavy cantilever roadheader represents the development direction of rock roadway driving technology in the future< Although Sany Heavy Equipment Co., Ltd. launched the first ebz200h Hard Rock Roadheader in China last year, the gap between domestic heavy-ty roadheader and foreign advanced equipment is not only low in overall performance parameters, but also weak in basic research. The load spectrum of cutting, shipping and walking parts suitable for China's coal mine geological conditions has not been established, and there is no complete theoretical basis for design, The
aspect of computer dynamic simulation is still blank; In component reliability, control technology, in cutting
9. The two TBM (tunnel boring machines) proced in Germany with a unit price of 93 million US dollars were first imported from Pakistan and first implemented by Gezhouba Group
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