Taper sleeve for coal mining machine and taper sleeve pin shaft assembly

Abstract

The taper sleeve is a cylindrical part, the two ends of the taper sleeve are a closed end and an open end respectively, the outer side rotation surface of the cylinder wall of the taper sleeve comprises a first outer side surface and a second outer side surface which are connected in a left-right mode, and the inner side rotation surface of the cylinder wall of the taper sleeve comprises a first inner side surface and a second inner side surface which are connected in a left-right mode. The outer first surface and the outer second surface are respectively a cylindrical surface and a conical surface, the diameter of the cylindrical surface is smaller when the cylindrical surface is closer to the open end, the inner first surface and the inner second surface are conical surfaces, the diameter is larger when the cylindrical surface is closer to the open end, and the taper of the inner first surface is smaller than that of the inner second surface; the taper sleeve pin shaft assembly comprises a pin shaft and the taper sleeve, one end of the pin shaft is a cone, and the cone part of the pin shaft is inserted into the taper sleeve and is in shaft hole fit with the first surface of the inner side. The possibility that the surface of the taper sleeve is crushed and damaged can be greatly reduced, the labor intensity of workers is reduced, and the connection reliability between the rocker arm and the traction part is guaranteed.

Description

technical field [0001] The invention relates to a taper sleeve for a coal shearer and a taper sleeve pin shaft assembly, belonging to the technical field of mechanical positioning. Background technique [0002] The taper pin assembly has high centering accuracy and strong anti-shock and anti-vibration capabilities, so it is often used to connect the rocker arm and the traction part of the shearer. The taper pin receives the impact force from the rocker arm and transmits it to the traction part through the taper sleeve. However, in the actual use process, it is often found that the surface of the taper sleeve is crushed and damaged, which leads to a great decrease in the reliability of the connection between the rocker arm and the traction, and the crushed and deformed taper sleeve and the traction part shell are bonded together, resulting in The taper sleeve is difficult to disassemble, which delays mine production and increases the labor intensity of workers. SUMMARY OF ...

AI Technical Summary

Problems solved by technology

However, in actual use, it is often found that the surface of the taper sleeve is crushed and damaged, which greatly reduces the reliability of the connection between the rocker arm and the traction, and the crushed and deformed taper sleeve is bonded to the casing of the traction part, causing The cone sleeve is difficult to disassemble, which delays the production of the mine and increases the labor intensity of the workers

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