Gear assembling structure and gear assembling adjusting mechanism

Abstract

The invention discloses a gear assembling structure and a gear assembling adjusting mechanism, which relate to the technical field of gear assembling. The gear assembling adjusting mechanism comprisesa press-fitting block, supporting legs and an adjusting ball shaft. The press-fitting block is provided with mounting holes penetrating through the press-fitting block, and the mounting holes comprise a positioning ball hole and a connecting hole which are communicated with each other; the supporting legs are connected to the press-fitting block and used for abutting against the gear; the adjusting ball shaft comprises a ball body and a connecting shaft which are connected in sequence, the connecting shaft is used for being connected with the gear shaft, and the ball body is matched with thepositioning ball hole; the connecting shaft is arranged in the connecting hole in a penetrating mode, and the ball body stays in the positioning ball hole. Therefore, through mutual match between thegear assembling structure and the gear assembling adjusting mechanism and the self-aligning function of the adjusting ball shaft, precision errors are eliminated, the first-time assembling precision of the gear and the gear shaft is improved, the gear and the gear shaft are assembled in place at a time, the phenomenon that the gear and the gear shaft which cannot reach the assembling precision aredisassembled subsequently and then reassembled can be avoided, and the machining cost is reduced.

Description

technical field [0001] The present application relates to the technical field of gear assembly, in particular, to a gear assembly structure and a gear assembly adjustment mechanism. Background technique [0002] In gear assembly, the large gear and the gear shaft are generally interference-fitted by means of a drying sleeve. Especially in rail transit subway gearboxes, in order to better transmit torque, the intermediate shaft system generally adopts the method of drying sleeves to assemble the gears. [0003] During the drying process, when the required interference is large, the gear shaft needs to be refrigerated while heating the large gear, and the interference fit between the large gear and the gear shaft is realized through thermal expansion and contraction. [0004] In the prior art, after heating the large gear and freezing the gear shaft and assembling the two, it is necessary to place the large gear and the gear shaft at room temperature for a period of time. At ...

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Problems solved by technology

[0004] In the prior art, after heating the large gear and freezing the gear shaft and assembling the two, it is necessary to place the large gear and the gear shaft at room temperature for a period of time. At this time, due to the principle of thermal expansion and contraction, the large gear will shrink, and The direction of axial shrinkage is unknown. There may be a gap between the mating surface of the large gear and the gear shaft. At the same time, the mating surface of the large gear and the gear shaft may be inclined, resulting in the assembly accuracy of the large gear and the gear shaft. It needs to be disassembled and reassembled. High processing cost

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