CN-117532545-B - Auxiliary fixtures and vehicle

CN117532545BCN 117532545 BCN117532545 BCN 117532545BCN-117532545-B

Abstract

The application belongs to the technical field of differential assembly, and particularly relates to an auxiliary tool and a vehicle, wherein the auxiliary tool comprises a positioning jacking block, a compression assembly and a compression assembly, wherein the positioning jacking block is arranged between a first half-shaft gear set and a second half-shaft gear set, the positioning jacking block comprises an upper jacking block and a lower jacking block which can mutually slide, the upper jacking block is abutted with the first half-shaft gear set, the lower jacking block is abutted with the second half-shaft gear set, the compression assembly is connected with the positioning jacking block through a part, inserted into a differential shell, of the compression assembly, and the upper jacking block and the lower jacking block can respectively apply extrusion force to the first half-shaft gear set and the second half-shaft gear set in the moving process of the compression assembly so as to compress the first half-shaft gear set and the second half-shaft gear set. The application can improve the assembly progress and the assembly precision of the differential mechanism, and in addition, the positioning ejector block and the compression assembly can also improve the convenience in the assembly process of the differential mechanism.

Inventors

ZHANG ZILI
LI JUN
GAO HONG

Assignees

广州汽车集团股份有限公司

Dates

Publication Date: 20260512
Application Date: 20231225

Claims (9)

1. An auxiliary fixture for the assembly of a differential, the differential comprising a differential housing, a first side gear set and a second side gear set, the first side gear set and the second side gear set being disposed within the differential housing, the auxiliary fixture comprising: the positioning jacking block is arranged between the first half-shaft gear set and the second half-shaft gear set and comprises an upper jacking block and a lower jacking block which can mutually slide, the upper jacking block is abutted with the first half-shaft gear set, and the lower jacking block is abutted with the second half-shaft gear set; The part, inserted into the differential shell, of the compression assembly is connected with the positioning top block; wherein, go up the kicking block and include the butt recess, compression assembly includes: the pull rod is provided with a through hole penetrating along the axial direction of the pull rod, the outer side of the pull rod is provided with a hook block, and the hook block is matched with the abutting groove; The ejector rod is arranged in the through hole; The holding piece comprises a holding part and a fixing part, wherein the holding part is connected with the fixing part through a diagonal block, and the fixing part is connected with the through hole; The telescopic rod is connected with the holding part, penetrates through the fixing part, and is partially arranged in the through hole, and the telescopic rod arranged in the through hole is connected with the ejector rod arranged in the through hole; wherein, when the grip portion is depressed toward the second side gear set: The holding part drives the telescopic rod to move towards the direction of the second half-axle gear set, and then drives the ejector rod to push the lower ejector block to move towards the direction of the second half-axle gear set; the fixing part drives the pull rod to move towards the direction of the first half-shaft gear set, and then drives the hook block at the outer side of the pull rod to be abutted with the abutting groove so as to drive the upper ejector block to move towards the direction of the first half-shaft gear set.
2. The auxiliary tool according to claim 1, wherein the upper and lower top blocks form a moving chamber; The positioning top block comprises an insertion hole, the compression assembly is inserted into the moving cavity through the insertion hole, and the compression assembly can move in the moving cavity so as to drive the upper top block to move towards the direction close to the first half-shaft gear set and drive the lower top block to move towards the direction close to the second half-shaft gear set.
3. The auxiliary tool according to claim 2, wherein the lower ejector block is inserted into the upper ejector block, a waist round hole is formed in the outer side of the upper ejector block, a threaded hole is formed in the outer side of the lower ejector block, and the waist round hole of the upper ejector block corresponds to the threaded hole of the lower ejector block; The positioning jacking block further comprises a moving part, the moving part is sequentially inserted into the waist round hole of the upper jacking block and the threaded hole of the lower jacking block, and the moving part can slide in the waist round hole of the upper jacking block.
4. The auxiliary tool according to claim 2, wherein the upper top block includes the insertion hole, and the abutment grooves are provided on opposite sides of the insertion hole; When the compression assembly is inserted into the moving cavity, the ejector rod and the hook block are arranged in the moving cavity; When the compression assembly moves, the ejector rod pushes the lower ejector block to move towards the direction close to the second half-shaft gear set, the hook block is contacted with the abutting groove, and the upper ejector block is driven to move towards the direction close to the first half-shaft gear set.
5. The auxiliary tool according to claim 1, wherein the fixing portion is in threaded connection with the through hole, and further comprising a first fixing member for fastening the fixing portion and the tie rod; the telescopic rod is in threaded connection with the ejector rod, the auxiliary fixture further comprises at least two second fixing pieces, and the second fixing pieces are sleeved on the outer sides of the telescopic rod and the ejector rod.
6. The auxiliary tool according to claim 1, wherein the pull rod further comprises a limiting block, the limiting block and the hook block are sequentially arranged at intervals in the axial direction of the pull rod, and the limiting block is arranged on one side, away from the positioning top block, of the hook block; When the compression assembly is inserted into the moving cavity, the limiting block is abutted with the end face of the differential housing.
7. The auxiliary tool according to claim 1, wherein the pull rod is further provided with a spline, the spline is matched with an internal spline in the first half-shaft gear set, and the pull rod can drive the first half-shaft gear set to rotate when rotating.
8. The auxiliary tool according to claim 1, further comprising: The positioning base comprises a base body, a positioning column and an anti-rotation column, wherein the positioning column and the anti-rotation column are arranged on the base body at intervals; The positioning column comprises a first positioning part and a second positioning part which are connected with each other, the first positioning part is arranged on one side, far away from the base body, of the second positioning part, the first positioning part is inserted into the second half-shaft gear set, and the second positioning part is inserted into the differential mechanism shell; the anti-rotation post is inserted into the differential housing.
9. A vehicle comprising a differential assembled using the auxiliary tool of any one of claims 1 to 8.

Description

Auxiliary fixtures and vehicle Technical Field The application belongs to the technical field of differential assembly, and particularly relates to an auxiliary tool and a vehicle. Background In an automotive transmission or an electric drive system, two wave washers or arc-shaped thrust washers are often arranged between two side gears and a differential housing, the wave washers are in a compressed state in the differential, and the side gears are tightly attached to the differential housing through elastic force generated by compression of the wave washers, so that abnormal sound of the differential is greatly reduced in the running process of a vehicle. When the differential mechanism is assembled, a larger pressure is required to be applied to the wave washer, so that the wave washer is compressed for a certain stroke, and the parts such as the side gears, the planetary gears and the like can be assembled in place. Meanwhile, as the differential mechanism is small in assembly space and high in assembly precision requirement, at present, the technical scheme of manual installation is mainly adopted in the industry, and a crowbar, screw threading and other methods are conventionally used for compressing the wave washer, but the method has the problems of complex operation, inconvenient control of force and stroke, poor actual use effect and the like. Disclosure of Invention The application aims to provide an auxiliary tool and a vehicle, which can improve the assembly precision and the assembly progress of a differential mechanism. The first aspect of the present application provides an auxiliary tool for assembling a differential, the differential including a differential case, a first side gear set and a second side gear set, the first side gear set and the second side gear set being provided in the differential case, the auxiliary tool comprising: the positioning jacking block is arranged between the first half-shaft gear set and the second half-shaft gear set and comprises an upper jacking block and a lower jacking block which can mutually slide, the upper jacking block is abutted with the first half-shaft gear set, and the lower jacking block is abutted with the second half-shaft gear set; The part, inserted into the differential shell, of the compression assembly is connected with the positioning top block; the upper jacking block and the lower jacking block can respectively apply extrusion force to the first half-shaft gear set and the second half-shaft gear set in the moving process of the compression assembly so as to compress the first half-shaft gear set and the second half-shaft gear set. In an exemplary embodiment of the application, the upper and lower roof blocks form a mobile chamber; The positioning top block comprises an insertion hole, the compression assembly is inserted into the moving cavity through the insertion hole, and the compression assembly can move in the moving cavity so as to drive the upper top block to move towards the direction close to the first half-shaft gear set and drive the lower top block to move towards the direction close to the second half-shaft gear set. In an exemplary embodiment of the present application, the upper top block includes an abutment groove and the insertion hole, the abutment groove being provided at opposite sides of the insertion hole; The compression assembly comprises a push rod and a hook block, and when the compression assembly is inserted into the moving cavity, the push rod and the hook block are arranged in the moving cavity; When the compression assembly moves, the ejector rod pushes the lower ejector block to move towards the direction close to the second half-shaft gear set, the hook block is contacted with the abutting groove, and the upper ejector block is driven to move towards the direction close to the first half-shaft gear set. In an exemplary embodiment of the present application, the compression assembly further includes: The pull rod is provided with a through hole penetrating along the axial direction of the pull rod, the ejector rod is arranged in the through hole, and the outer side of the pull rod is provided with the hook block; The holding piece comprises a holding part and a fixing part, wherein the holding part is connected with the fixing part through a diagonal block, and the fixing part is connected with the through hole; The telescopic rod is connected with the holding part, penetrates through the fixing part, and is partially arranged in the through hole, and the telescopic rod arranged in the through hole is connected with the ejector rod arranged in the through hole; wherein, when the grip portion is depressed toward the second side gear set: The holding part drives the telescopic rod to move towards the direction of the second half-axle gear set, and then drives the ejector rod to push the lower ejector block to move towards the direction of the second half-axle gear set; the fixing part drives the pull rod