Forklift axle housing airtightness detection equipment

Abstract

The utility model discloses a forklift axle housing air tightness detection device, which relates to the axle housing air tightness detection field, and comprises a detection bench, the two sides of the upper end of the detection bench are fixedly provided with fixing blocks, the opposite surfaces of the fixing blocks on the two sides are fixedly provided with electric telescopic rods, and the output shaft of each electric telescopic rod is fixedly provided with a plug. A U-shaped plate is fixedly mounted at the upper end of the fixing block, two moving rods are slidably mounted in the U-shaped plate, a supporting plate is fixedly mounted at the upper ends of the moving rods, a driving motor is fixedly mounted in the center of the upper end of the U-shaped plate, and a threaded rod is fixedly mounted on an output shaft of the driving motor. The threaded rod is in threaded connection with the interior of the supporting plate. By the adoption of the structure, due to the fact that the deformation amplitude of the first limiting rubber pad and the second limiting rubber pad is large, axle housing shaft tubes of different specifications can be limited and fixed, and fixing and mounting of various axle housings are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of axle housing air tightness testing, and specifically relates to a forklift axle housing air tightness testing device. 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 a major component of the running gear system. The drive axle housing should possess sufficient strength and rigidity, be lightweight, and facilitate the disassembly, assembly, and adjustment of the final drive. The gearbox, filled with engine oil, is located inside the axle housing. If the axle housing leaks air, oil leakage will occur, accelerating the damage and wear of various components, reducing vehicle safety performance, and weakening vehicle stability. During the manufacturing process, the axle housing undergoes airtightness testing to ensure that the welds are leak-free.

[0003] Existing technologies have specifically developed some forklift axle housing airtightness testing devices. For example, Chinese patent publication number "CN218847533U" discloses "An axle housing airtightness testing device." With this device, the axle housing is placed on a platform, and the shaft tubes at both ends of the axle housing rest on a shaft tube support frame. The two ends of the shaft tube are sealed by a shaft tube sealing mechanism, and the axle housing is fixed on the platform by an axle housing clamping mechanism. Air is introduced into the axle housing through an air source, and soapy water is sprayed at the weld to detect whether there is air leakage at the weld. This device is convenient and quick to operate, has high accuracy, helps to improve production efficiency, and has a simple structure, low cost, and is easy to promote and use.

[0004] Although the bridge housing can be fixed on the platform using a housing clamping mechanism, and air can be introduced into the housing through an air source to spray soapy water at the weld to detect air leakage, this device is convenient, quick, and accurate, which is beneficial to improving production efficiency. However, in actual use of the above equipment, bridge housings of different shapes will be encountered, which will cause trouble when fixing the bridge housing. The shaft tube support frame in the above structure cannot be effectively used for various shaft tubes, which will lead to a decrease in detection efficiency and fail to improve the detection of various bridge housings. Utility Model Content

[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a forklift axle housing airtightness testing device to solve the problem of axle housing airtightness testing.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A forklift axle housing airtightness testing device includes a testing platform. Fixed blocks are fixedly installed on both sides of the upper end of the testing platform. Electric telescopic rods are fixedly installed on opposite sides of the fixed blocks. A plug is fixedly installed on the output shaft of each electric telescopic rod. A U-shaped plate is fixedly installed on the upper end of each fixed block. Two movable rods are slidably installed inside the U-shaped plate. A support plate is fixedly installed on the upper end of each movable rod. A drive motor is fixedly installed at the center of the upper end of the U-shaped plate. A threaded rod is fixedly installed on the output shaft of the drive motor and threadedly connected to the inside of the support plate. Pressure plates are fixedly installed on the ends of the two movable rods away from the support plate. Two fixed seats are fixedly installed on the upper end of the testing platform. A placement platform is fixedly installed at the center of the upper end of the testing platform.

[0008] As a preferred technical solution, the output shaft of the electric telescopic rod passes through the fixing block and is fixedly installed with a sealing gasket, and the plug is fixedly installed at the end of the sealing gasket away from the output shaft of the electric telescopic rod.

[0009] As a preferred technical solution, the support plate has an internal threaded hole, and the threaded rod is threadedly connected to the inside of the support plate through the internal threaded hole.

[0010] As a preferred technical solution, the U-shaped plate has two sliding openings inside, and the moving rod is slidably installed inside the U-shaped plate through the sliding openings.

[0011] As a preferred technical solution, a second limiting rubber pad is fixedly installed at the end of the pressure plate away from the moving rod, and a first limiting rubber pad is fixedly installed at the end of the fixed seat away from the detection table.

[0012] As a preferred technical solution, the upper end of the placement platform is integrally formed with a circular pad, the upper end of the circular pad is fixedly installed with a raised pad, and the upper end of the raised pad is fixedly installed with four limiting posts.

[0013] As a preferred technical solution, an air inlet is provided at the center of the placement platform, an air inlet pipe is fixedly connected to the bottom of the air inlet, and support legs are fixedly installed around the bottom of the testing platform.

[0014] In summary, the present invention has the following main advantages:

[0015] First, the worker places the shaft tube on the upper end of the first limiting rubber pad fixedly installed on the upper end of the fixed seat. When the placement is completed, the worker can control the drive motor to rotate, causing the threaded rod fixedly installed on the upper end of the drive motor output shaft to rotate. Since the threaded rod is threaded inside the support rod, the rotation of the threaded rod can drive the support rod to move towards the U-shaped plate. At this time, the two moving rods fixedly installed at the bottom of the support plate will move downwards towards the U-shaped plate as the support plate moves. The pressure plate fixedly installed at the bottom of the two moving rods will press against the upper surface of the shaft tube placed on the upper end of the fixed seat. The second limiting rubber pad is fixedly installed at the bottom of the pressure plate. When the shaft tube contacts the second limiting rubber pad, the first limiting rubber pad is pressed down and deformed to fit the shape of the upper end of the shaft tube. Through the clamping of the upper and lower sides, the bridge housing can be effectively fixed.

[0016] Secondly, due to the large deformation range of the first and second limiting rubber pads, different specifications of axle housing shaft tubes can be limited and fixed, facilitating the fixed installation of various axle housings. Then, the worker controls the electric telescopic rods fixed on the outside of the fixing block on both sides to move, so that the output end of the electric telescopic rod extends a certain distance, pushing the plug fixed on the output shaft of the electric telescopic rod into the groove shaft tube. The sealing gasket fixed on one end of the plug is pressed tightly against both ends of the shaft tube, which can effectively seal both ends of the shaft tube. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a front structural diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the support plate of this utility model;

[0020] Figure 4 This is a utility model Figure 3 A magnified structural diagram of part A;

[0021] Figure 5 This is a schematic diagram of the air intake pipe structure of this utility model.

[0022] Reference numerals: 1. Threaded rod; 2. Drive motor; 3. Support plate; 4. Moving rod; 5. U-shaped plate; 6. Pressure plate; 7. Electric telescopic rod; 8. Support leg; 9. Fixing block; 10. Air inlet pipe; 11. Testing table; 12. Placement table; 13. Fixing seat; 14. First limiting rubber pad; 15. Sealing gasket; 16. Plug; 17. Second limiting rubber pad; 18. Limiting post; 19. Air inlet; 20. Raised pad; 21. Internal threaded hole; 22. Sliding port; 23. Circular pad. Detailed Implementation

[0023] Example

[0024] refer to Figures 1-5 This embodiment of a forklift axle housing airtightness testing device includes a testing platform 11. Fixing blocks 9 are fixedly installed on both sides of the upper end of the testing platform 11. Electric telescopic rods 7 are fixedly installed on opposite sides of the fixing blocks 9. A plug 16 is fixedly installed on the output shaft of the electric telescopic rod 7. A U-shaped plate 5 is fixedly installed on the upper end of the fixing blocks 9. Two moving rods 4 are slidably installed inside the U-shaped plate 5. A support plate 3 is fixedly installed on the upper end of the moving rods 4. A drive motor 2 is fixedly installed at the center of the upper end of the U-shaped plate 5. A threaded rod 1 is fixedly installed on the output shaft of the drive motor 2. The threaded rod 1 is threadedly connected inside the support plate 3. A pressure plate 6 is fixedly installed on the end of each of the two moving rods 4 away from the support plate 3. Two fixing seats 13 are fixedly installed on the upper end of the testing platform 11. A placement platform 12 is fixedly installed at the center of the upper end of the testing platform 11.

[0025] refer to Figures 2 to 3 The output shaft of the electric telescopic rod 7 passes through the fixing block 9 and is fixedly installed with a sealing gasket 15. The plug 16 is fixedly installed at the end of the sealing gasket 15 away from the output shaft of the electric telescopic rod 7. The plug 16 can effectively fix the shaft tube, while the sealing gasket 15 can seal both ends of the shaft tube, effectively improving the detection function.

[0026] refer to Figures 3 to 4 The support plate 3 has an internal threaded hole 21. The threaded rod 1 is threaded into the support plate 3 through the internal threaded hole 21. The U-shaped plate 5 has two sliding openings 22. The moving rod 4 is slidably installed inside the U-shaped plate 5 through the sliding openings 22. The end of the pressure plate 6 away from the moving rod 4 is fixedly installed with a second limiting rubber pad 17. The end of the fixed seat 13 away from the detection table 11 is fixedly installed with a first limiting rubber pad 14. When the threaded rod 1 rotates, it can drive the support rod to move towards the U-shaped plate 5. At this time, the two moving rods 4 fixedly installed at the bottom of the support plate 3 will move downwards towards the U-shaped plate 5 as the support plate 3 moves. The pressure plate 6 fixedly installed at the bottom of the two moving rods 4 will press against the upper surface of the shaft tube placed on the upper end of the fixed seat 13. The second limiting rubber pad 17 is fixedly installed at the bottom of the pressure plate 6. When the shaft tube contacts the second limiting rubber pad 17, the first limiting rubber pad 14 is pressed down and deformed to fit the shape of the upper end of the shaft tube. It is clamped by the upper and lower sides.

[0027] refer to Figures 4 to 5The upper end of the placement platform 12 is integrally formed with a circular pad 23. A raised pad 20 is fixedly installed on the upper end of the circular pad 23. Four limiting posts 18 are fixedly installed on the upper end of the raised pad 20. The limiting posts 18 effectively place the bridge housing on the upper end of the placement platform 12, so that the bridge housing is not easy to shift or deviate during the test. Then, the outer wall of the opening end of the bridge housing body is aligned with the raised pad 20. An air inlet 19 is opened at the center of the placement platform 12. An air inlet pipe 10 is fixedly connected to the bottom of the air inlet 19. Support legs 8 are fixedly installed around the bottom of the test platform 11. The valve at the upper end of the air inlet pipe 10 is opened, and the air source is vented into the bridge housing. The pressure gauge reading is observed. When the reading is greater than the required value, the valve is closed. Soap water is sprayed onto the weld seam through a spray bottle. The presence of bubbles at the weld seam is observed to determine whether there is an air leak at the weld seam.

[0028] Operating principle and advantages: During use, the operator needs to place the bridge housing on the placement platform 12. The limiting post 18 effectively places the bridge housing on the upper end of the placement platform 12, so that the bridge housing is not easy to shift or deviate during testing. Then, the outer wall of the opening end of the bridge housing body is aligned with the protruding pad 20. The shaft tube is then placed on the upper end of the first limiting rubber pad 14 fixedly installed on the upper end of the fixed seat 13. When the placement is completed, the operator can control the drive motor 2 to rotate, causing the threaded rod 1 fixedly installed on the upper end of the output shaft of the drive motor 2 to rotate. Since the threaded rod 1 is threadedly connected inside the support rod, the rotation of the threaded rod 1 can drive the support rod to move towards the U-shaped plate 5. At this time, the two moving rods 4 fixedly installed at the bottom of the support plate 3 will move downwards towards the U-shaped plate 5 as the support plate 3 moves. The pressure plate 6 fixedly installed at the bottom of the two moving rods 4 will press against the upper surface of the shaft tube placed on the upper end of the fixed seat 13. The second limiting rubber pad 17 is fixedly installed at the bottom of the pressure plate 6. When the shaft tube contacts the second limiting rubber pad 17, the first limiting rubber pad 14 is pressed down. The limiting rubber pad 14 deforms under force to conform to the shape of the upper end of the shaft tube. Through the clamping of the upper and lower sides, the axle housing can be effectively fixed. At the same time, due to the large deformation range of the first limiting rubber pad 14 and the second limiting rubber pad 17, different specifications of axle housing shaft tubes can be limited and fixed, which facilitates the fixed installation of various axle housings. Then, the worker controls the electric telescopic rod 7 fixed on the outside of the fixing block 9 on both sides to move, so that the output end of the electric telescopic rod 7 extends a certain distance and pushes the plug 16 fixed on the output shaft of the electric telescopic rod 7 into the groove shaft tube. The sealing gasket 15 fixed on one end of the plug 16 presses tightly against both ends of the shaft tube, which can effectively seal both ends of the shaft tube. Under the action of the pressure plate 6, the axle housing body can be tightly attached to the placement platform 12. Then, the valve at the upper end of the air inlet pipe 10 is opened, and the air source is used to circulate air into the axle housing. The pressure gauge reading is observed. When the reading is greater than the required value, the valve is closed. Soap water is sprayed onto the weld seam through a spray bottle, and the presence of bubbles at the weld seam is observed to determine whether there is an air leak at the weld seam.

Claims

1. A forklift axle housing airtightness testing device, comprising a testing platform (11), characterized in that: Fixed blocks (9) are fixedly installed on both sides of the upper end of the testing platform (11). Electric telescopic rods (7) are fixedly installed on opposite sides of the fixed blocks (9). A plug (16) is fixedly installed on the output shaft of the electric telescopic rod (7). A U-shaped plate (5) is fixedly installed on the upper end of the fixed block (9). Two moving rods (4) are slidably installed inside the U-shaped plate (5). A support plate (3) is fixedly installed on the upper end of the moving rod (4). A drive motor (2) is fixedly installed at the center of the upper end of the U-shaped plate (5). A threaded rod (1) is fixedly installed on the output shaft of the drive motor (2). The threaded rod (1) is threadedly connected to the inside of the support plate (3). A pressure plate (6) is fixedly installed on the end of each of the two moving rods (4) away from the support plate (3). Two fixed seats (13) are fixedly installed on the upper end of the testing platform (11). A placement platform (12) is fixedly installed at the center of the upper end of the testing platform (11).

2. The forklift axle housing airtightness testing device according to claim 1, characterized in that: The output shaft of the electric telescopic rod (7) passes through the fixing block (9) and is fixedly installed with a sealing gasket (15). The plug (16) is fixedly installed at the end of the sealing gasket (15) away from the output shaft of the electric telescopic rod (7).

3. The forklift axle housing airtightness testing device according to claim 1, characterized in that: The support plate (3) has an internal threaded hole (21) inside, and the threaded rod (1) is threadedly connected to the inside of the support plate (3) through the internal threaded hole (21).

4. The forklift axle housing airtightness testing device according to claim 1, characterized in that: The U-shaped plate (5) has two sliding openings (22) inside, and the moving rod (4) is slidably installed inside the U-shaped plate (5) through the sliding openings (22).

5. The forklift axle housing airtightness testing device according to claim 1, characterized in that: A second limiting rubber pad (17) is fixedly installed at the end of the pressure plate (6) away from the moving rod (4), and a first limiting rubber pad (14) is fixedly installed at the end of the fixed seat (13) away from the detection table (11).

6. The forklift axle housing airtightness testing device according to claim 1, characterized in that: The upper end of the placement platform (12) is integrally formed with a circular pad (23), and a raised pad (20) is fixedly installed on the upper end of the circular pad (23). Four limiting posts (18) are fixedly installed on the upper end of the raised pad (20).

7. The forklift axle housing airtightness testing device according to claim 1, characterized in that: An air inlet (19) is provided at the center of the placement platform (12), and an air inlet pipe (10) is fixedly connected to the bottom of the air inlet (19). Support legs (8) are fixedly installed around the bottom of the testing platform (11).

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