The problems that will occur during the use of the coupling and the installation of the elastic pin gear coupling

In the process of daily use, there should be problems with the coupling. What are the general problems?How to solve the problem?Let's tell everyone about it.

XNUMX. There is a broken tooth in the coupling.

XNUMX. The bolts of the coupling are broken.

XNUMX. The gear surface of the coupling is severely damaged.

Fourth, the axial displacement of the gear ring of the coupling is large, even unable to mesh.

The reasons for these failures mainly include the following two aspects:

XNUMX. The coupling of lifting accessories is short of oil or lack of oil.Or improper use of grease causes calcification of the grease, resulting in no lubrication between the tooth surfaces, or poor lubrication, causing serious wear on the tooth surfaces.

Treatment method: As long as the new grease is replaced, qualified grease is injected on time to prevent oil leakage, and the amount of oil is sufficient, it can be avoided.

XNUMX. The level and coaxiality errors of the two shafts are too large to be compensated by the coupling, so that the shaft teeth and the internal teeth mesh inaccurately, causing local contact and generating additional torque.

Solution: This kind of failure is difficult to handle, and production needs to be stopped.That is, realign or realign the reducer, or realign the drum.At first, locate the position with large deviation error, and first measure the coupling, that is, measure the levelness of the main shaft, the coaxiality of the main shaft and the coaxiality of the reducer main shaft, and re-level and align it according to the quality scale. T can.

Fixing method of elastic pin coupling:

XNUMX. D-shaped hole fixing: Normally, if the shaft of the motor is D-shaped, if the positioning screw cannot be fixed, the hole of the coupling can be processed into a D-shaped hole corresponding to the size of the motor shaft, and the positioning is coordinated The screws are fixed, so there is no need to worry about slipping.

XNUMX. Fixing of the expansion sleeve: tightening and fixing the account cover by tightening the four positioning screws on the end of the coupling. It is suitable for the connection and fixing of some stepping motors and servo motors with large torque, such as expansion sleeve diaphragm couplings. , Expanding sleeve plum blossom coupling, expanding sleeve bellows coupling, etc.

90. Elastic coupling positioning screw fixation: The two positioning screws have a gap of XNUMXo to lock the fixed shaft. The old-fashioned fixing method, because the front end of the screw contacts the shaft, may cause damage to the shaft or difficulty in disassembly.

XNUMX. Clamping screw fixation: Use the tightening force of the hexagon socket bolt to shrink the slit and clamp the shaft tightly.Elastic pin couplings are generally elastic pin couplings, nylon rod pin couplings, and a simpler way of putting it is to connect two half couplings with N nylon rods.

Before the elastic pin gear coupling is installed, the end faces of the two shafts should be cleaned, and the key grooves on the end faces should be checked for fit. After installation, run a shift normally, and all screws need to be checked. If loose, they need to be tightened. Repeat this for several shifts. , So that it will not loosen, it may cause personal and equipment accidents due to the running elastic pin gear coupling, so appropriate stability protection measures need to be taken at each site.

The elastic pin gear coupling is made of several non-metal elastic material nylon pins, which are placed in the flange holes of the two halves of the coupling, and are used to be called nylon elastic pin gear couplings.There are 3 types of elastic pin gear coupling, elastic pin gear coupling and pin gear coupling.The elastic pin gear coupling is made of a number of non-metal elastic material nylon pins, placed in the flange holes of the two coupling halves, and the two halves of the coupling are connected by the pin. The coupling structure It is simple and easy to manufacture, and it is convenient to assemble and disassemble the elastic element without moving the two halves of the coupling.

The material of the elastic element (column pin) is generally selected from nylon, which has the ability to compensate the deviation of the two axes in a small amount. The elastic part is sheared when working, and the workability is relatively poor. It is only suitable for the medium-speed transmission shaft system with very low requirements, not applicable For working conditions with high workability requirements.The shaft hole types are cylindrical (Y), conical (Z) and short cylindrical (J).The shaft hole and keyway are processed in accordance with the Chinese standard GB3852-83 "Coupling shaft column and keyway form and size".The semi-coupling is made of casting, cast iron HT20-40, cast steel ZG35, the shaft hole and keyway are made of drawing, and the pin is made of MC nylon b.