Mining machine frame
hope to adopt, welcome to ask
many fields are using this concept to promote
blockchain is divided into public chain, private chain and alliance chain
the real reconstruction is private, so as to ensure that it will not be changed, but it is too difficult
1. Unit voltage calibration: by adjusting the "system reference voltage" (about 3.0 by default), slowly increase and decrease the amplitude of 0.001, the unit voltage value can be changed until it is accurate! 2. Total voltage calibration: by adjusting the "total voltage ad value into the actual voltage of the parameters" (default about 3330), slowly adjust the size of this value, you can change the total voltage until accurate! 3. Current calibration: by adjusting the "current sensor range", slowly adjust the value, you can change the current until it is accurate
note: please do not change the item of "power starting current" in parameter setting, too large may lead to MOS tube burning and discharging!!!
the movement of movable jaw plate of jaw crusher is realized by means of eccentric connecting rod and thrust plate, which is composed of flywheel, eccentric shaft, connecting rod, front thrust plate and rear thrust plate (commonly known as elbow plate). Two flywheels are respectively installed at both ends of the eccentric shaft. The eccentric shaft is supported in the bearing on the side wall of the frame, and the discharge material is processed by the mill
the upper part of the connecting rod is installed on the eccentric shaft, one end of the front and rear thrust plates are respectively supported on the grooves of the thrust plate support on both sides of the lower part of the connecting rod, the other end of the front thrust plate is supported in the thrust plate support on the lower part of the movable jaw, and the other end of the rear thrust plate is supported in the proction of the thrust plate on the rear wall of the frame. After that, it can be processed by the pulverizer, ultra-fine pulverizer and micro pulverizer
when the motor drives the eccentric shaft to rotate through the belt pulley, it makes the connecting rod move up and down, thus driving the thrust plate to move. The angle formed by the front and rear thrust plates is constantly changed, which drives the moving jaw to move. Movable jaw crusher www.ksepj.com The jaw plate swings back and forth around the suspension shaft to crush the ore. When the movable jaw swings forward, the horizontal pull rod balances the inertial force generated by the movable jaw and the thrust plate through the spring, so that the movable jaw and the thrust plate are closely combined without separation
when the moving jaw retreats, the spring can help. The eccentric shaft is an important part of the crusher and drives the connecting rod to move up and down. Because it bears great crushing force when working, it is generally made of high-quality alloy steel
the connecting rod is made of cast steel because it bears tensile force ring operation. In order to rece the quality of the connecting rod, the lower section of the connecting rod is often made into I-shape, cross shape or box shape. Large jaw crusher mainly uses combined connecting rod. The combined connecting rod has the advantages of small mass, material saving and simple safety device
the thrust plate, also known as the elbow plate, is a bar that transmits motion to the moving jaw, and it is also used as a safety device. Changing its length can also adjust the size of the ore outlet. Generally cast iron into a whole, but also cast into two pieces, and then connected with bolts or rivets.
Grinding machine is a kind of mining equipment for grinding ore. The raw material is fed into the hollow cylinder (with end caps at both ends) through the hollow Journal for grinding. The cylinder is filled with grinding media of various diameters (steel ball, steel bar or gravel, etc.). The utility model has the advantages of convenient operation, convenient pulp self main flow and pulp distribution. There are several classification methods for grinding machines, among which the most practical classification method is based on different grinding media: ball mill with metal ball as medium, rod mill with steel rod as medium, autogenous mill with ground ore itself as medium and gravel mill with ore or gravel as medium. The working principle, parameters affecting grinding, configuration and classification of grinding machine are introced in detail
The working principle of the grinding machine is shown in the figure. The raw material is fed into the hollow cylinder 3 (with end caps 2 and 4 at both ends) through the hollow Journal 1 for grinding. The cylinder is filled with grinding media of various diameters (steel ball, steel bar or gravel, etc.)when the cylinder rotates around the horizontal axis at a certain speed, the media and raw materials in the cylinder will fall or roll off the inner wall of the cylinder when their own gravity is greater than the centrifugal force under the action of centrifugal force and friction, and the ore will be broken e to the impact force. At the same time, in the process of grinding, the sliding motion of grinding media also has grinding effect on raw materials. The ground material is discharged through the hollow journal 5. Due to the continuous feeding of materials, the pressure causes the materials in the cylinder to move from the feeding end to the discharging end. During wet grinding, the material is carried away by water flow; During dry grinding, the material is taken away by the air flow out of the cylinder
the working speed of the mill cylinder is generally 30 ~ 14R / min. the rotating speed of the mill cylinder with larger diameter is lower, and vice versa. The ratio of the working speed of the mill cylinder to its critical speed is called the speed rate, which is generally 76% ~ 88%
The development trend of machine tool inverter is as follows: first, high performance. At present, almost all inverters require vector mastering mode, and there are a few mastering structures and algorithms at different levels. It is worth noting that speed sensorless vector control (SVC) is developing rapidly in recent years. Because SVC can require low interest and high power disposal plan, it has become the dream specification and development direction in general inverter. Second, it is easy to master. The user's demand for frequency converter is graally transformed into field device, and the setting tool is added to the software, and the pneumatic clutch is used for grinding machine, so as to simplify the debugging process through user operation. Third, the demand for functional molarization and intellectualization is graally increasing. It is understood that the number of inverters needed for a machine tool can reach 4-5. This is enough to foresee the market potential of machine tool inverter. At present, most of the inverters used in China's machine tool market are Japanese brands, such as Mitsubishi inverter, which is close to the server function, so it is widely used in machine tools; The function of delta is close to Mitsubishi, but its price is much cheaper and cost-effective. In recent years, its market share has graally increased. In the lathe procts, the frequency converter is the most widely used. However, Japanese brands such as Yaskawa, Fuji, Mitsubishi and Taiwan Delta have a large market share. Although some domestic brands of inverter are adopted by machine tool manufacturers, such as Shenzhen Huichuan inverter, which performs well in the application of lathes, in the fields of grinding machines, forging machines and other fields with higher functional requirements for inverter procts, foreign brands are still in the majority, such as Mitsubishi, Fuji, German Siemens, Delta and other brands are still in the dominant position. According to the sales data of pneumatic clutch for grinding machine in 2008 and 2009, the inventory situation of general-purpose machine tools, especially those with various functions, is quite severe, while the market of compound machine tools and large heavy-ty procts is better. These machine tools have a wide range of processing, and the implementation parts of machine tools have different movement speeds, which also puts forward higher requirements for the function of frequency converter. Domestic frequency converter manufacturers should seize the opportunity to cultivate the machine tool market
"boring car" and "flying car" are the possible faults in the operation of the cone breaker. Although there is only one word difference, the causes and Solutions of these two kinds of faults are completely different. The main engine stops suddenly, commonly known as "boring car". The phenomenon of galloping refers to the phenomenon of cone breaking and cone instability. Today, let's take a look at the causes and solutions of the phenomenon of "boring car" and "flying car"
in the proction process of cone breaking, too much or uneven feeding will lead to the blockage of the discharge port, resulting in excessive proction load of cone breaking and fuse breaking, resulting in shutdown
if the belt is too loose and the cone is broken, the power is transmitted by the belt. If the belt of the driving groove is too loose, it will cause the belt to slip and can not provide enough power for the normal work of the machine, resulting in the sudden stop of the cone
the eccentric shaft is stuck. When the fastening bush of the eccentric shaft is loose or falls off, there is no clearance between the two sides of the bearing seat of the frame, and the eccentric shaft is stuck and cannot rotate normally. At this time, the cone will be broken, the machine will stop suddenly, and the "boring" situation will appear
bearing damage the bearing is a very important part in the cone fracture, which is used to rece the friction coefficient in the working process. If the bearing is damaged, it will not work normally with other broken parts, resulting in a sudden shutdown of the cone
when the voltage at the construction site is unstable or too low, it is easy to force the cone to break self-protection and cause shutdown. Therefore, before starting the machine, the operator must check whether the voltage is normal.