The upper box cover and the lower box body are connected together by bolts

In particular, pay attention to ensure the matching tolerance of the shaft and the inner hole of the felt ring. The gearboxes are all equipped with vents in structure. Therefore, when installing the gearbox and the motor, be sure to find the alignment and leveling to ensure that they are concentric. Therefore, the amount of oil must be appropriate and cannot be added. In this way, part of the oil flows back to the oil pool, and part of the oil leaks out of the box along the shaft through the bearing.

For the oil leakage of the non-shaft extension cover, the main reason is that the clearance between the end cover and the box body is large. And a drainage hole communicating with the felt groove is opened on the end cover. The circumferential speed of the large gear in the reduction box of the crane is generally not large.The guide plate is as large as possible in its rotation range, so that as little oil as possible enters the bearing. This structure of the reducer is used when the diameter of the gear is not much different from the diameter of the shaft.. It is the base of transmission parts and should have sufficient strength and rigidity.

The upper box cover and the lower box body are connected together by bolts.The reducer is mainly composed of transmission parts (gear or worm), shaft, bearing, box and accessories. In order to simplify the process and reduce the cost of a single-piece reducer,China Explosion-proof Gear motors Manufacturers a steel plate welded box can be used. The box is an important part of the reducer.

Deep groove ball bearings are used for both shafts. At this time, the gear and the shaft are fixed in the circumferential direction by a flat key connection, and the parts on the shaft are axially fixed by the shaft shoulder, shaft sleeve and bearing cover.

The bottom surface of the lower box seat of the reducer adopts two longitudinal strips to process the base surface. The box is usually made of gray cast iron, and cast steel box can also be used for the reducer with heavy load or impact load. In order to avoid the possibility of splashing thin oil from falling off the grease, it can be separated by a stopper. The pinion and the shaft are made into one body, called the gear shaft. 

The overload capacity of the drive motor will continue to increase its output

It must be less than 2 times the rated output Wholesale Bevel Helical Gearboxes Manufacturers torque of the reducer. At this time, the overload capacity of the drive motor will continue to increase its output, which may cause the output bearing of the reducer to be affected. This is not only to protect the reducer, but also to prevent the output shaft of the reducer from being twisted.

Except for the broken shaft of the reducer caused by poor assembly concentricity at the output end of the reducer, if the output shaft of the reducer breaks, there are nothing more than the following reasons. First, the rated output torque of the equipped motor is multiplied by the reduction ratio, and the value obtained is in principle smaller than the product The rated output torque of the reducer provided by the sample is similar.

In theory, the maximum working torque required by the user. Second, the overload capacity of the drive motor and the maximum operating torque required in practice must also be considered. In particular, some applications must strictly abide by this criterion. First of all, the wrong selection caused insufficient output of the reducer. The force exceeds 2 times the rated output torque and twists the output shaft of the reducer.

This is mainly because if there is a problem with the installation of the equipment, the output shaft of the reducer and its load are jammed. Some users mistakenly think that as long as the rated output torque of the selected reducer meets the working requirements, it is not true. Secondly, in the process of acceleration and deceleration, if the instantaneous torque applied to the output shaft of the reducer exceeds twice its rated output torque, and this acceleration and deceleration are too frequent, the reducer will eventually be broken

Synchronous motors are often used to drive high-power

Therefore, it has the advantages of simple structure, convenient manufacture, use and maintenance, reliable operation, low quality and low cost.. The greater the load torque, the lower the speed of the rotor. It also changes with the size of the load. Asynchronous motors include induction motors, doubly-fed asynchronous motors and AC commutator motors.

Therefore, synchronous motors are often used to drive high-power, low-speed mechanical equipment such as ball mills and compressors. They run near constant speed from no-load to full-load, and can meet the transmission requirements of most industrial and agricultural production machinery. Asynchronous motors have higher operating efficiency and better working characteristics.

Asynchronous motor is a kind of AC motor, and the ratio of its speed at load to the frequency of the connected power grid is not constant. Generally speaking, induction motors can be called asynchronous motors without causing misunderstanding or confusion. When an asynchronous motor is running, it must draw reactive excitation power from the grid to make the power factor of the grid worse. Induction motors are very widely used. The stator winding of the ordinary asynchronous motor is connected to the AC power grid, and the rotor winding does not need to be connected to other power sources.

Because the speed of the asynchronous motor has a certain slip relationship with the speed of its rotating magnetic field, its speed regulation performance is poor (except for AC commutator motors). For transportation machinery, rolling mills, large-scale machine tools, printing and dyeing and papermaking machinery that require a wide and smooth speed range, Belt Conveyor Pulley Manufacturers it is more economical and convenient to use

DC motors. However, with the development of high-power electronic devices and AC speed control systems, the speed control performance and economy of asynchronous motors suitable for wide speed control are comparable to those of DC motors. Asynchronous motors are also easy to generate various protection types to meet the needs of different environmental conditions