Rotary device of hydraulic excavator for mine
A technology of hydraulic excavator and slewing device, which is applied in the direction of earth mover/shovel, construction, etc. It can solve the problems of low service life, large deflection of slewing pinion shaft, poor rigidity, etc., and achieve cost reduction, meshing accuracy and reliability The effect of improving performance and improving rigidity
Inactive Publication Date: 2012-02-29
TAIYUAN HEAVY IND
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Problems solved by technology
[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a rotary device for mining hydraulic excavators, and solve the problems of large deflection, poor rigidity, and low service life of the rotary pinion shaft in the prior art
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[0015] Such as Figure 4 , 5 , 6, a rotary device of a mining hydraulic excavator, comprising: a rotary platform 2, a rotary bearing 4 and a rotary reducer 5, the outer ring 4-1 of the rotary bearing 4 and the rotary platform 2 pass through the bolt 1 and the anti-loosening Sleeve 8 connection; the connection between the inner ring 4-2 of the slewing bearing 4 and the chassis 3 is to process the threaded holes on the inner ring 4-2 of the slewing bearing 4, and use the bolt 1 to pass through the connection between the anti-loosening sleeve 8 and the chassis 3. The thread connection of hole and slewing bearing 4 inner rings 4-2.
[0016] Threaded holes are processed on the inner ring of the slewing bearing 4, and the light holes and nuts 7 of the inner ring of the slewing bearing are replaced by threaded holes, which saves assembly space, so the length of the rotating pinion shaft can be reduced, thereby reducing the rotation speed. The deflection of the pinion shaft shortens...
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The invention discloses a rotary device of a hydraulic excavator for mine, which relates to a transmission mechanism of a hydraulic excavator for mine and solves the problems that the rotary pinion shaft has large deflection, poor rigidity and short service life in the prior art. The rotary device comprises a rotary platform 2, a rotary support 4 and a rotary decelerator 5, wherein an outer ring 4-1 of the rotary support 4 is connected with the rotary platform 2 through a bolt 1 and an anti-loosening sleeve 8; and an inner ring 4-2 of the rotary support 4 is connected with a chassis 3. The rotary device is characterized in that the connection between the inner ring 4-2 of the rotary support 4 and the chassis 3 is threaded connection realized by machining a threaded hole on the inner ring 4-2 of the rotary support 4 and making the bolt 1 pass through the anti-loosening sleeve 8, a through hole of the chassis 3 and the inner ring 4-2 of the rotary support 4.
Description
technical field [0001] The invention relates to a mine excavator, in particular to a transmission mechanism of a mine hydraulic excavator. Background technique [0002] The slewing device of mining hydraulic excavator is an important transmission mechanism of the whole machine. The slewing device of the prior art is mainly composed of an internal gear slewing bearing 4, a slewing reducer 5, a bolt 1, a slewing platform 2, a nut 6, a washer 7, a lock sleeve 8 and a slewing pinion shaft 9. The outer ring 4-1 of the slewing bearing 4 is connected with the slewing platform 2 through the bolt 1 and the anti-loosening sleeve 8; Frame 3 connections. The washer 6 and the nut 7 are installed in the middle of the inner ring 4-2 of the slewing support 4 and the slewing platform 2 . The working principle of the slewing device of the mining hydraulic excavator is: the inner ring 4-2 of the slewing bearing 4 is connected with the chassis 3 through the bolt 1 and fixed with the chassis ...
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IPC IPC(8): E02F3/358
Inventor 李光王新中李爱峰毛瑞
Owner TAIYUAN HEAVY IND