Axle housing sealing leakage test clamp

Abstract

The utility model discloses an axle housing sealing leakage test fixture, which belongs to the technical field of automobile part detection equipment, and comprises a sealing cover, a screw rod, a connecting seat and a clamping jaw, the upper part of the screw rod passes through the upper part of the sealing cover, a lining is arranged between the sealing cover and the screw rod, the lining is fixed on the sealing cover, the sealing cover is provided with a fork seat, and the fork seat is provided with a clamping jaw. The threaded part of the screw rod is in threaded connection with the linkage seat, the linkage seat can move up and down by rotating the screw rod, the linkage seat is hinged to one end of the clamping jaw, the middle of the clamping jaw is hinged to the fork seat, and the clamping jaw moves up and down along with the linkage seat. The clamping jaw rotates with the hinge point of the fork base as the circle center. The utility model provides an axle housing sealing leakage test clamp which is simple in structure and can realize rapid clamping, sealing, inflation and leakage test of axle housing holes.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts testing equipment and relates to a clamp used for axle housing sealing leakage testing. Background Art

[0002] The welds between the axle housing and the center section, along with the rear cover and reinforcement ring, create welds that affect the axle housing's performance. Various factors can cause bubbles to form during the welding process, leading to oil leakage during operation. To prevent these quality issues, the axle housing center section is tested for leaks, and sealing is the most challenging issue to resolve. Because the axle housing and the final reducer are connected by bolt holes, the blanks are in contact. Existing axle housing sealing and leak testing fixtures primarily use pneumatic or hydraulic cylinders for compression, which are bulky, complex, space-consuming, and inconvenient to operate. Utility Model Content

[0003] The utility model provides a bridge housing sealing and leak testing fixture to solve the problems raised in the above background technology. The fixture has a simple structure and can realize rapid clamping, sealing, and inflation leak testing of bridge housing holes.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is: it includes a sealing cover, a screw, a joint and a claw, the upper part of the screw passes through the upper part of the sealing cover, a bushing is provided between the sealing cover and the screw, the bushing is fixed on the sealing cover, the sealing cover is provided with a fork seat, the threaded part of the screw and the joint seat are threadedly connected, and rotating the screw can make the joint seat move up and down, the joint seat is hinged to one end of the claw, the middle part of the claw is hinged to the fork seat, the claw moves up and down with the joint seat, and the claw rotates with the hinge point of the fork seat as the center of the circle.

[0005] In the above technical solution, a more specific technical solution can also be: the bushing is fixed on the sealing cover through a large nut, a gasket is provided between the large nut and the sealing cover, the large nut is fixed on the sealing cover, and the bushing is embedded and fixed in the large nut.

[0006] Furthermore: a bearing is provided below the bushing, the screw is inserted into the bearing, a retaining ring is provided in the middle of the screw, the retaining ring is clamped on the bottom of the bearing, the screw head of the screw is clamped on the upper part of the bushing, and the screw is rotatable in the bushing.

[0007] Furthermore: a first sealing ring is provided between the screw and the bushing, a second sealing ring is provided between the bushing and the sealing cover, and a sealing gasket is provided at the bottom of the sealing cover.

[0008] Furthermore: the coupling seat is provided with a first pin shaft, a sliding hole is opened at one end of the clamping claw, the first pin shaft and the sliding hole are slidingly hinged, the fork seat is provided with a second pin shaft, and the middle part of the clamping claw is hinged to the second pin shaft.

[0009] Furthermore: the joint seat is fixed with a small nut, and the threaded portion of the screw and the small nut are threadedly connected.

[0010] Furthermore: a stopper is provided on the threaded portion of the screw to prevent the coupling seat from falling out of the screw.

[0011] Furthermore: the sealing cover is also provided with a handle.

[0012] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art: by rotating the screw to make the coupling seat move upward and drive the claw to rotate downward, the claw is extended into the inner cavity of the bridge housing, and then the screw is rotated in the opposite direction to make the coupling seat move downward and drive the claw to rotate upward, and the claw is pressed against the upper wall of the inner cavity of the bridge housing to achieve rapid sealing and start leak testing, so that the production efficiency and the quality of the bridge housing welds are effectively verified. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 yes Figure 1 Top view.

[0015] Figure 3 It is a schematic diagram of the utility model when in use.

[0016] In the figure: 1. Sealing cover; 11. Fork seat; 12. Handle; 13. Sealing gasket; 2. Screw; 21. Threaded part; 22. Retaining ring; 23. Stopper; 3. Large nut; 31. Gasket; 4. Bushing; 41. First sealing ring; 42. Second sealing ring; 5. Bearing; 6. Joint; 61. Small nut; 62. First pin; 7. Claw; 71. Sliding hole; 72. Second pin; 8. Bridge housing; 81. Weld. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings:

[0018] like Figures 1 to 3The bridge housing sealing leak test fixture shown includes a sealing cover 1, a screw 2, a coupling seat 6 and a claw 7. The upper part of the screw 2 passes through the upper part of the sealing cover 1. A bushing 4 is provided between the sealing cover 1 and the screw 2. The bushing 4 is fixed on the sealing cover 1. The sealing cover 1 is provided with a fork seat 11. The threaded portion 21 of the screw 2 is threadedly connected to the coupling seat 6. Rotating the screw 2 can make the coupling seat 6 move up and down. The coupling seat 6 is hinged to one end of the claw 7. The middle part of the claw 7 is hinged to the fork seat 11. The claw 7 moves up and down with the coupling seat 6, and the claw 7 rotates with the hinge point of the fork seat 11 as the center of the circle. The bushing 4 is fixed to the sealing cover 1 through the large nut 3. A gasket 31 is provided between the large nut 3 and the sealing cover 1. The large nut 3 is fixed to the sealing cover 1, and the bushing 4 is embedded in and fixed in the large nut 3. A bearing 5 is provided below the bushing 4. The screw 2 is inserted into the bearing 5. A snap ring 22 is provided in the middle of the screw 2. The snap ring 22 is clamped at the bottom of the bearing 5. The screw head of the screw 2 is clamped at the upper part of the bushing 4. The screw 2 can rotate in the bushing 4. A first sealing ring 41 is provided between the screw 2 and the bushing 4. A second sealing ring 42 is provided between the bushing 4 and the sealing cover 1. A sealing gasket 13 is provided at the bottom of the sealing cover 1. In this example, In the figure, the sealing cover 1 is provided with six fork seats 11, the coupling seat 6 is hinged with six claws 7, the middle parts of the six claws 7 are hinged with the six fork seats 11 respectively, the coupling seat 6 is provided with a first pin shaft 62, and a sliding hole 71 is opened at one end of the claw 7. The first pin shaft 62 and the sliding hole 71 are slidingly hinged. The fork seat 11 is provided with a second pin shaft 72, and the middle part of the claw 7 is hinged with the second pin shaft 72; the coupling seat 6 is fixed with a small nut 61, and the threaded portion 21 of the screw 2 is threadedly connected to the small nut 61; the end of the threaded portion of the screw 2 is provided with a block 23 to prevent the coupling seat 6 from falling off from the screw 2, and the sealing cover 1 is also provided with a handle 12.

[0019] When in use, the screw rod 2 is rotated forward, and the screw rod principle is used to move the coupling seat 6 upward. The upward-moving coupling seat 6 uses the lever principle to make the claws 7 rotate downward with the second pin shaft 72 as the center of the circle. The distance between the six claws 7 is reduced to less than the diameter of the main reducing surface of the middle section of the bridge housing 8. The claws 7 are placed into the inner cavity of the bridge housing 8, and then the screw rod 2 is rotated in the opposite direction to make the coupling seat 6 move downward and drive the claws 7 to rotate upward with the second pin shaft 72 as the center of the circle. The claws 7 are pressed against the upper wall of the inner cavity of the bridge housing 8, squeezing the sealing gasket 13 of the sealing cover 1 to complete the sealing of the bridge housing 8, inflating the middle section of the bridge housing 8, observing the pressure gauge, brushing the weld 81 with soapy water or testing the entire weld with water to observe whether bubbles appear in the weld 81; after the leak test is completed, the screw 2 is rotated forward, the coupling seat 6 rises, and the claws 7 are downward to loosen and remove the utility model.

Claims

1. A bridge housing seal leak test fixture, characterized by: It includes a sealing cover, a screw, a coupling seat and a claw. The upper part of the screw passes through the upper part of the sealing cover. A bushing is provided between the sealing cover and the screw. The bushing is fixed on the sealing cover. The sealing cover is provided with a fork seat. The threaded part of the screw and the coupling seat are threadedly connected. The coupling seat is hinged to one end of the claw, and the middle part of the claw is hinged to the fork seat.

2. The axle housing sealing leak test fixture according to claim 1, characterized in that: The bushing is fixed on the sealing cover through a large nut, and a gasket is provided between the large nut and the sealing cover.

3. The axle housing sealing leak test fixture according to claim 2, characterized in that: A bearing is provided below the bushing, the screw is inserted into the bearing, a snap ring is provided in the middle of the screw, the snap ring is clamped on the bottom of the bearing, and the screw head of the screw is clamped on the upper part of the bushing.

4. The axle housing sealing leak test fixture according to claim 3, characterized in that: A first sealing ring is provided between the screw and the bushing, a second sealing ring is provided between the bushing and the sealing cover, and a sealing gasket is provided at the bottom of the sealing cover.

5. The axle housing sealing leak test fixture according to claim 4, characterized in that: The coupling seat is provided with a first pin shaft, one end of the clamping claw is provided with a sliding hole, the first pin shaft and the sliding hole are slidingly hinged, the fork seat is provided with a second pin shaft, and the middle part of the clamping claw is hinged to the second pin shaft.

6. The axle housing sealing leak test fixture according to claim 5, characterized in that: The coupling seat is provided with a small nut, and the threaded portion of the screw rod is connected to the small nut.

7. The axle housing sealing leak test fixture according to claim 6, characterized in that: The threaded portion of the screw is provided with a stopper.

8. The axle housing sealing leak test fixture according to claim 7, characterized in that: The sealing cover is also provided with a handle.

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