Axle housing air tightness detection tool

Abstract

The utility model discloses an axle housing air tightness detection tool, and relates to the technical field of automobile processing equipment, the axle housing air tightness detection tool comprises a work bench, the rear side of the work bench is fixedly provided with a column, the column is provided with a movable seat in a liftable manner, the front side of the movable seat is fixedly provided with a positioning assembly, the positioning assembly comprises a placing bench, and the placing bench is provided with a movable seat. The containing table is fixedly installed on the movable base, an installation table is arranged in the middle of the containing table, and a first air cylinder is fixedly installed on the installation table. According to the design scheme of the utility model, a to-be-detected axle housing is supported through the placement table, the first cylinder drives the exhaust pipe to cover the bottom of the threaded sleeve, and the second cylinder drives the sealing plug to block the inner hole of the threaded sleeve, so that gas in the exhaust pipe can only leak outwards from a welding position, and the placement table sinks into the water storage tank by moving the movable seat downwards. A worker can quickly judge whether the air tightness of the axle housing is qualified or not by observing whether bubbles exist in water or not, so that the driving safety and the service life of a vehicle are ensured.

Description

Technical Field

[0001] This utility model relates to the field of bridge housing testing technology, and in particular to a tooling for testing the airtightness of bridge housings. Background Technology

[0002] The axle housing is a fundamental component for mounting the final drive, differential, half-shafts, wheel hubs, and suspension. Its main function is to support and protect the final drive, differential, and half-shafts. Simultaneously, the axle housing is also a major component of the running gear; therefore, the drive axle housing should possess sufficient strength and rigidity, be lightweight, and facilitate the disassembly, assembly, and adjustment of the final drive. Lubricating oil is added to the inner cavity of the axle housing to lubricate gears, bearings, and other components.

[0003] During the production of axle housings, components such as threaded sleeves or bushings need to be welded onto the axle housings to achieve effective connection with other components. If the airtightness of the weld is poor, oil leakage will occur, leading to accelerated damage and wear of various parts, reducing vehicle safety performance and shortening vehicle life. To address this, we propose an axle housing airtightness testing fixture. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the existing technology, this utility model provides a bridge housing airtightness testing fixture.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a bridge housing airtightness testing fixture, including a workbench, a column fixedly installed on the rear side of the workbench, a movable seat mounted on the column that can be raised and lowered, a positioning component fixedly installed on the front side of the movable seat, the positioning component including a placement platform, the placement platform fixedly installed on the movable seat, the placement platform being used to place the bridge housing to be tested, an mounting platform provided in the middle of the placement platform, a first cylinder fixedly installed on the mounting platform, an exhaust pipe fixedly installed on the power output end of the first cylinder, an mounting plate provided on the rear side of the placement platform, a second cylinder fixedly installed on the mounting plate, the first cylinder and the second cylinder being symmetrically arranged, a sealing plug fixedly installed on the power output shaft of the second cylinder, the sealing plug being coaxially arranged with the exhaust pipe, and a water storage tank provided below the placement platform.

[0006] Furthermore, the left and right ends of the placement platform are provided with support platforms, and the bottom of the mounting platform is provided with a mounting groove. The first cylinder is fixedly installed in the mounting groove. The power output shaft of the first cylinder passes through the mounting platform and is connected to the exhaust pipe. An air intake chamber is opened at the end of the exhaust pipe away from the first cylinder. A sealing ring is fixedly installed at the edge of the air intake chamber. An air pipe connector is fitted on the side wall of the exhaust pipe and is connected to the air intake chamber.

[0007] Furthermore, a support plate is provided at the top front end of the column, and a third cylinder is fixedly installed on the support plate. The power output end of the third cylinder is fixedly connected to the movable seat.

[0008] Furthermore, the movable seat is a frame structure, and the movable seat is fitted around the column. A guide rail is fixedly installed on the rear side wall of the column, and a slider is slidably installed on the guide rail. The slider is fixedly installed on the rear inner wall of the movable seat, and clearance grooves are provided at the bottom of the left and right side walls of the movable seat.

[0009] Furthermore, the water storage tank is fixedly installed on the top of the workbench, and a drain valve is installed at the bottom of the rear side wall of the water storage tank.

[0010] The beneficial effects of this utility model are that the design scheme supports the axle housing to be tested through a placement platform. The first cylinder drives the exhaust pipe to cover the bottom of the threaded sleeve, and the second cylinder drives the sealing plug to block the inner hole of the threaded sleeve, so that the gas in the exhaust pipe can only leak out from the weld. By moving the movable seat downward, the placement platform is submerged in the water storage tank. By observing whether there are bubbles in the water, the staff can quickly determine whether the airtightness of the axle housing is qualified, so as to ensure the driving safety and life of the vehicle. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is the front view of the present invention;

[0014] Figure 3 This is the left view of the present invention;

[0015] Figure 4 This is a top view of the present invention;

[0016] Figure 5 for Figure 3 A schematic diagram of the cross-sectional structure along the AA direction.

[0017] In the diagram: 1. Workbench, 2. Column, 21. Support plate, 3. Movable seat, 31. Clearance groove, 4. Placement platform, 41. Mounting platform, 42. Mounting plate, 43. Support platform, 44. Mounting groove, 5. First cylinder, 6. Exhaust pipe, 61. Intake chamber, 7. Sealing ring, 8. Air pipe connector, 9. Second cylinder, 10. Sealing plug, 11. Third cylinder, 12. Guide rail, 13. Slider, 14. Water tank, 15. Drain valve, 16. Bridge housing, 17. Screw sleeve. Detailed Implementation

[0018] To more clearly illustrate the technical solution of this utility model, the following description is made in conjunction with the accompanying drawings. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings and embodiments without creative effort, and all of them fall within the protection scope of this utility model.

[0019] according to Figure 1-5 As shown, a bridge housing airtightness testing fixture includes a workbench 1, a column 2 fixedly mounted on the rear side of the workbench 1, a movable seat 3 mounted on the column 2 that can be raised and lowered, a positioning component fixedly mounted on the front side of the movable seat 3, the positioning component including a placement platform 4, the placement platform 4 fixedly mounted on the movable seat 3, the placement platform 4 for placing the bridge housing 16 to be tested, an mounting platform 41 provided in the middle of the placement platform 4, a first cylinder 5 fixedly mounted on the mounting platform 41, an exhaust pipe 6 fixedly mounted on the power output end of the first cylinder 5, an mounting plate 42 provided on the rear side of the placement platform 4, a second cylinder 9 fixedly mounted on the mounting plate 42, the first cylinder 5 and the second cylinder 9 are symmetrically arranged, a sealing plug 10 fixedly mounted on the power output shaft of the second cylinder 9, the sealing plug 10 and the exhaust pipe 6 are coaxially arranged, and a water storage tank 14 is provided below the placement platform 4.

[0020] In this embodiment, a support plate 21 is provided at the top front end of the column 2. A third cylinder 11 is fixedly installed on the support plate 21. The power output end of the third cylinder 11 is fixedly connected to the movable seat 3. The movable seat 3 is a frame structure and is fitted around the column 2. A guide rail 12 is fixedly installed on the rear side wall of the column 2. A slider 13 is slidably installed on the guide rail 12. The slider 13 is fixedly installed on the rear inner wall of the movable seat 3. The bottom ends of the left and right side walls of the movable seat 3 are provided with clearance grooves 31. A water storage tank 14 is fixedly installed on the top of the workbench 1. The rear side wall of the water storage tank 14 is... A drain valve 15 is installed at the bottom. A certain amount of water is stored in the water storage tank 14 for testing. The water in the water storage tank 14 can be discharged out through the drain valve 15, so that the staff can clean the water storage tank 14 regularly or replace the water in the water storage tank 14. During testing, the movable seat 3 is driven by the third cylinder 11 to move up and down along the guide rail 12 on the column 2. When the push rod of the third cylinder 11 extends, the movable seat 3 descends and sinks into the water storage tank. The clearance groove 31 on the side wall of the movable seat 3 avoids the side wall of the water storage tank to prevent the movable seat 3 from interfering with the water storage tank.

[0021] In this embodiment, support platforms 43 are provided at both ends of the placement platform 4, and a mounting groove 44 is provided at the bottom of the mounting platform 41. The first cylinder 5 is fixedly installed in the mounting groove 44. The first cylinder 5 is waterproofed to prevent damage caused by water ingress. The power output shaft of the first cylinder 5 passes through the mounting platform 41 and is connected to the exhaust pipe 6. An air inlet chamber 61 is opened at the end of the exhaust pipe 6 away from the first cylinder 5. A sealing ring 7 is fixedly installed at the edge of the air inlet chamber 61. An air pipe connector 8 is fitted on the side wall of the exhaust pipe 6. The air pipe connector 8 is connected to the air inlet chamber 61. The air pipe connector 8 is connected to the air supply equipment through an air pipe. The gas generated by the air supply equipment passes through... The air pipe delivers air into the intake chamber 61. The diameter of the intake chamber 61 of the exhaust pipe 6 is larger than the diameter of the threaded sleeve 17 on the rear cover of the axle. During testing, both ends of the axle housing 16 are placed on the support platform 43, and the position of the axle housing 16 is adjusted so that the threaded sleeve 17 on the axle housing 16 is aligned with the exhaust pipe 6. The first cylinder 5 drives the exhaust pipe 6 to move closer to the threaded sleeve 17. The diameter of the intake chamber 61 is larger than the diameter of the threaded sleeve 17, so that the exhaust pipe 6 covers the bottom periphery of the threaded sleeve 17. The connection between the exhaust pipe 6 and the axle housing 16 is sealed by the sealing ring 7 to prevent the gas in the intake chamber 61 from leaking out from the connection between the exhaust pipe 6 and the axle housing 16, which would affect the accuracy of the test results.

[0022] In use, the operator places the axle housing 16 to be tested on the placement platform 4 and aligns the threaded sleeve on the axle housing 16 with the exhaust pipe 6. Then, the first cylinder 5 and the second cylinder 9 are activated. Driven by the first cylinder 5, the exhaust pipe 6 covers the bottom periphery of the threaded sleeve 17. The sealing plug 10, driven by the second cylinder 9, blocks the inner hole of the threaded sleeve 17, so that the gas in the exhaust pipe 6 can only leak out from the weld. Then, the third cylinder 11 is activated, which drives the movable seat 3 to descend. The movable seat 3 causes the placement platform 4 to sink into the water in the water storage tank 14. Gas is supplied to the exhaust pipe 6 through the air supply equipment. By observing whether there are bubbles in the water, the operator can quickly determine whether the airtightness of the axle housing 16 is qualified, so as to ensure the driving safety and life of the vehicle.

[0023] The above embodiments are merely exemplary embodiments of this utility model and are not intended to limit this utility model. The scope of protection of this utility model is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this utility model within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this utility model.

Claims

1. A bridge housing airtightness testing fixture, comprising a worktable (1), characterized in that: A column (2) is fixedly installed on the rear side of the workbench (1). A movable seat (3) is installed on the column (2) and can be raised and lowered. A positioning component is fixedly installed on the front side of the movable seat (3). The positioning component includes a placement platform (4). The placement platform (4) is fixedly installed on the movable seat (3). The placement platform (4) is used to place the bridge housing (16) to be tested. An mounting platform (41) is provided in the middle of the placement platform (4). A first cylinder (5) is fixedly installed on the mounting platform (41). An exhaust pipe (6) is fixedly installed at the power output end of the first cylinder (5). An installation plate (42) is provided on the rear side of the placement platform (4). A second cylinder (9) is fixedly installed on the installation plate (42). The first cylinder (5) and the second cylinder (9) are symmetrically arranged. A sealing plug (10) is fixedly installed on the power output shaft of the second cylinder (9). The sealing plug (10) is coaxially arranged with the exhaust pipe (6). A water storage tank (14) is provided below the placement platform (4).

2. The bridge housing airtightness testing fixture according to claim 1, characterized in that, The placement platform (4) has support platforms (43) at both ends. The bottom of the mounting platform (41) has a mounting groove (44). The first cylinder (5) is fixedly installed in the mounting groove (44). The power output shaft of the first cylinder (5) passes through the mounting platform (41) and is connected to the exhaust pipe (6). The exhaust pipe (6) has an air intake chamber (61) at one end away from the first cylinder (5). A sealing ring (7) is fixedly installed at the edge of the air intake chamber (61). An air pipe connector (8) is fitted on the side wall of the exhaust pipe (6). The air pipe connector (8) is connected to the air intake chamber (61).

3. The bridge housing airtightness testing fixture according to claim 1, characterized in that, The top front end of the column (2) is provided with a support plate (21), and a third cylinder (11) is fixedly installed on the support plate (21). The power output end of the third cylinder (11) is fixedly connected to the movable seat (3).

4. The bridge housing airtightness testing fixture according to claim 3, characterized in that, The movable seat (3) is a frame structure. The movable seat (3) is fitted around the column (2). A guide rail (12) is fixedly installed on the rear side wall of the column (2). A slider (13) is slidably installed on the guide rail (12). The slider (13) is fixedly installed on the inner rear wall of the movable seat (3). The bottom ends of the left and right side walls of the movable seat (3) are provided with clearance grooves (31).

5. A bridge housing airtightness testing fixture according to any one of claims 1-4, characterized in that, The water storage tank (14) is fixedly installed on the top of the workbench (1), and a drain valve (15) is installed at the bottom of the rear side wall of the water storage tank (14).

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