CN219416689U

CN219416689U - Clamp for testing fatigue strength of axle housing

Info

Publication number: CN219416689U
Application number: CN202320864328.2U
Authority: CN
Inventors: 尹华斌; 阮波
Original assignee: SAIC Hongyan Automotive Co Ltd
Current assignee: SAIC Hongyan Automotive Co Ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-25
Anticipated expiration: 2033-04-18

Abstract

The utility model provides a fixture for testing fatigue strength of an axle housing, which is characterized in that: the clamp comprises a clamping block, a connecting block, a spacer bush, an adjusting gasket and a locking nut; the middle part of the left or right side surface of the clamping block is provided with a through hole, and the lower part of the clamping block is a T-shaped head; a T-shaped clamping groove is formed in the top surface of the connecting block and matched with the T-shaped head; the top surface of the connecting block is provided with a plurality of connecting through holes; the clamping block, the spacer bush and the adjusting gasket are sleeved on the half-shaft guide pipe in sequence from inside to outside, and the lock nut is sleeved on threads at the end part of the half-shaft guide pipe; the T-shaped sleeve is sleeved in the T-shaped clamping groove; the connecting block is connected with the base through a screw; the spacer bush can be propped against the left end face of the clamping block by tightening the locking nut. The clamp can improve the reliability of clamping and fixing, the accuracy of test data and the safety.

Description

Clamp for testing fatigue strength of axle housing

Technical Field

The utility model relates to the technical field of vehicle manufacturing, in particular to a clamp for testing fatigue strength of an axle housing.

Background

Before the axle housing of a vehicle is assembled and used, fatigue strength test is usually required to be carried out on a test bench, in the test process, the half-shaft guide pipe of the axle housing is required to be clamped and fixed, as shown in fig. 1, in the prior art, the half-shaft guide pipe is clamped by utilizing two semicircular arc blocks 101, the two semicircular arc blocks 101 tightly hold the half-shaft guide pipe from the upper direction and the lower direction of the half-shaft guide pipe through bolts, and a gap is reserved between the two semicircular arc blocks 101, so that the arc surfaces of the semicircular arc blocks 101 are fully contacted with the outer peripheral surface of the half-shaft guide pipe and apply pressure to generate larger friction force to limit the radial and axial freedom degrees of the half-shaft guide pipe. In the test process, due to frequent radial vibration, the upper semicircular arc block 101 and the lower semicircular arc block are easy to loosen, so that the clamping force on the semi-axis guide pipe is reduced, even the clamping fails, the accuracy of test data is influenced, and even potential safety hazards are caused.

Disclosure of Invention

Aiming at the problems of the background technology, the utility model provides a clamp for testing the fatigue strength of an axle housing, which aims to solve the problems that in the prior art, the clamping and fixing of a half-axle guide pipe of the axle housing are unreliable, the test data are influenced and the safety is unsafe.

In order to achieve the purpose of the utility model, the utility model provides a clamp for testing the fatigue strength of an axle housing, a base for fixing an axle shaft guide pipe of the axle housing is arranged on a test bench for testing the fatigue strength of the axle housing, the clamp is used for clamping the axle shaft guide pipe of the axle housing when being used for testing the fatigue strength, and threads are arranged on the outer peripheral surface of the end part of the axle shaft guide pipe, and the innovation point is that: the clamp comprises a clamping block, a connecting block, a spacer bush, an adjusting gasket and a locking nut; the middle part of the left or right side surface of the clamping block is provided with a through hole, the diameter of the through hole is matched with the outer diameter of the half shaft guide pipe, the cross section of the lower part of the clamping block along the front-back direction is in an inverted T shape, and the lower part of the clamping block with the cross section in the inverted T shape is marked as a T-shaped head; the top surface of the connecting block is provided with a T-shaped clamping groove, the T-shaped clamping groove is a through groove, the axial direction of the T-shaped clamping groove extends along the front-back direction of the connecting block, the cross section of the T-shaped clamping groove is inverted T-shaped, and the T-shaped clamping groove is matched with the T-shaped head; the top surface of the connecting block is provided with a plurality of connecting through holes which are distributed on the left side and the right side of the T-shaped clamping groove;

the clamping block, the spacer bush and the adjusting gasket are sleeved on the half-shaft guide pipe in sequence from inside to outside, and the lock nut is sleeved on threads at the end part of the half-shaft guide pipe; the T-shaped sleeve is sleeved in the T-shaped clamping groove; the connecting block is connected with the base through a screw; the spacer bush can be propped against the left end face of the clamping block by tightening the locking nut.

As optimization, the number of the connecting through holes is 4, and the 4 connecting through holes are symmetrically arranged on the left side and the right side of the T-shaped clamping groove.

The method has the following beneficial effects: because the clamping block is integrally sleeved on the half-shaft guide pipe to limit the radial freedom degree, the axial freedom degree of the half-shaft guide pipe is limited by the spacer bush, the adjusting gasket and the locking nut, continuous radial vibration is immediately generated in the test process, the clamp cannot be loosened in the radial direction, the reliability of the clamp is greatly improved, the reliability of test data is improved, and the safety is improved.

Drawings

The drawings of the present utility model are described below.

FIG. 1 is a schematic diagram of a prior art structure;

fig. 2 is a schematic structural view of the present utility model.

In the figure: 1. a clamping block; 2. a connecting block; 3. a spacer bush; 4. adjusting the gasket; 5. a lock nut; 101. a semicircular arc block; 1-1, a half shaft conduit.

Description of the embodiments

The utility model is further illustrated below with reference to examples.

The fixture for testing the fatigue strength of the axle housing is shown in fig. 2, a base (not shown in the figure) for fixing an axle housing axle guide pipe is arranged on a test bench for testing the fatigue strength of the axle housing, the fixture is used for clamping the axle housing axle guide pipe 1-1 during the fatigue strength testing, threads are arranged on the peripheral surface of the end part of the axle guide pipe 1-1, and the fixture comprises a clamping block 1, a connecting block 2, a spacer bush 3, an adjusting gasket 4 and a locking nut 5; the middle part of the left side surface or the right side surface of the clamping block 1 is provided with a through hole, the diameter of the through hole is matched with the outer diameter of the half-shaft guide pipe 1-1, the cross section of the lower part of the clamping block 1 along the front-back direction is in an inverted T shape, and the lower part of the clamping block with the inverted T-shaped cross section is marked as a T-shaped head; the top surface of the connecting block 2 is provided with a T-shaped clamping groove, the T-shaped clamping groove is a through groove, the axial direction of the T-shaped clamping groove extends along the front-back direction of the connecting block, the cross section of the T-shaped clamping groove is in an inverted T shape, and the T-shaped clamping groove is matched with the T-shaped head; the top surface of the connecting block 2 is provided with a plurality of connecting through holes which are distributed on the left side and the right side of the T-shaped clamping groove;

the clamping block 1, the spacer bush 3 and the adjusting gasket 4 are sleeved on the half-shaft guide pipe 1-1 in sequence from inside to outside, and the locking nut 5 is sleeved on threads at the end part of the half-shaft guide pipe 1-1; the T-shaped sleeve is sleeved in the T-shaped clamping groove; the connecting block 2 is connected with the base through a screw; the spacer bush 3 can be tightly pressed against the left end face of the clamping block 1 by tightening the locking nut 5.

In order to improve the connection strength, the number of the connecting through holes is 4, and the 4 connecting through holes are symmetrically arranged on the left side and the right side of the T-shaped clamping groove.

Claims

1. A fixture for axle housing fatigue strength test is provided with the base that is used for fixing the semi-axis pipe of axle housing on the test bench of axle housing fatigue strength test, when fixture is used for fatigue strength test, centre gripping to semi-axis pipe (1-1) of axle housing, be provided with screw thread on the tip outer peripheral surface of semi-axis pipe (1-1), its characterized in that: the clamp comprises a clamping block (1), a connecting block (2), a spacer bush (3), an adjusting gasket (4) and a locking nut (5); the middle part of the left side surface or the right side surface of the clamping block (1) is provided with a through hole, the diameter of the through hole is matched with the outer diameter of the half-shaft guide pipe (1-1), the cross section of the lower part of the clamping block (1) along the front-back direction is in an inverted T shape, and the lower part of the clamping block with the inverted T-shaped cross section is marked as a T-shaped head; the top surface of the connecting block (2) is provided with a T-shaped clamping groove, the T-shaped clamping groove is a through groove, the axial direction of the T-shaped clamping groove extends along the front-back direction of the connecting block, the cross section of the T-shaped clamping groove is in an inverted T shape, and the T-shaped clamping groove is matched with the T-shaped head; the top surface of the connecting block (2) is provided with a plurality of connecting through holes which are distributed on the left side and the right side of the T-shaped clamping groove;

the clamping block (1), the spacer bush (3) and the adjusting gasket (4) are sequentially sleeved on the half-shaft guide pipe (1-1) from inside to outside, and the locking nut (5) is sleeved on threads at the end part of the half-shaft guide pipe (1-1); the T-shaped sleeve is sleeved in the T-shaped clamping groove; the connecting block (2) is connected with the base through a screw; the spacer bush (3) can be propped against the left end face of the clamping block (1) by tightening the locking nut (5).

2. The fixture for axle housing fatigue strength testing as defined in claim 1, wherein: the number of the connecting through holes is 4, and the 4 connecting through holes are symmetrically arranged on the left side and the right side of the T-shaped clamping groove.