Differential mechanism sealing performance rapid detection device

Abstract

The utility model relates to the technical field of differential sealing detection devices, in particular to a differential sealing performance rapid detection device, which is characterized in that a detection table comprises a supporting panel, a supporting frame is fixedly mounted on the rear side of the top surface of the supporting panel, a cylinder is fixedly mounted on the front side of a transverse plate body of the supporting frame, and a telescopic shaft of the cylinder is detachably connected with a transparent sealing box; the transparent sealing box moves downwards and can abut against the top face of the supporting panel so that a sealed space can be formed. The suction detection assembly comprises a gas tank, an exhaust pipe is fixedly installed on the top of the gas tank, a valve is fixedly installed on the exhaust pipe, a pressure gauge is fixedly installed on the top of the gas tank, a vacuum pump is arranged on one side of the gas tank, and the gas outlet end of the vacuum pump communicates with the gas tank through a gas pipe. And the suction end of the vacuum pump is communicated with the sealed space through a suction pipe. According to the utility model, through the cooperation of the suction detection assembly and the sealed space, rapid detection operation can be conveniently carried out, and a water immersion mode is not needed.

Description

Technical Field

[0001] This utility model relates to the technical field of differential sealing testing devices, specifically, to a rapid testing device for differential sealing performance. Background Technology

[0002] As a key component of the automotive transmission system, the differential's sealing performance directly affects the vehicle's driving safety and service life. Good sealing performance can prevent lubricating oil leakage, ensure normal lubrication and heat dissipation of internal gears, bearings, and other parts, and avoid failures such as wear and jamming of parts caused by poor lubrication. At the same time, it can also prevent external dust, moisture, and other impurities from entering the differential, preventing parts from rusting and maintaining the stable operation of the differential. Differential testing is usually performed on a corresponding testing device.

[0003] The invention patent with authorization announcement number CN117629525A discloses a device for testing the airtightness of a vehicle axle differential installation. It includes a water tank and a differential placement cylinder with an open top, cylindrical structure, located inside the water tank. The upper end of the differential placement cylinder has a cover plate supporting the outer extension of the differential. The cover plate is sealed to the upper opening of the differential placement cylinder. The middle of the cover plate is connected to a movable clamping and fixing mechanism for sealing and fixing differentials of different sizes. It also includes a lifting mechanism for driving the differential placement cylinder to move up and down. The differential placement cylinder is connected to the water tank through the lifting mechanism. The lifting mechanism includes a lifting cylinder fixed to the water tank, and the telescopic shaft of the lifting cylinder is connected to a connecting lug fixed to the differential placement cylinder. This device has advantages such as simple structure, convenient operation, high testing accuracy, high automation, low manual labor intensity, good versatility, and the ability to meet the co-production needs of various product models.

[0004] While the aforementioned technical solutions offer advantages such as low manual labor intensity and good versatility, current mainstream solutions generally employ water immersion technology to test sealing performance. However, the effectiveness of water immersion is limited by the size of the leak. If the leak is small, water penetration takes time, making rapid testing difficult. Furthermore, immersion can allow water to enter the differential, potentially corroding internal components and affecting its subsequent performance. Therefore, we propose a rapid testing device for differential sealing performance. Utility Model Content

[0005] The purpose of this invention is to provide a rapid testing device for differential sealing performance, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A rapid testing device for differential sealing performance includes a testing platform and a suction testing component. The testing platform includes a support panel, a support frame is fixedly installed on the rear side of the top surface of the support panel, and a cylinder is fixedly installed on the front side of the horizontal plate of the support frame. The telescopic shaft of the cylinder is detachably connected to a transparent sealing box, which is located above the support panel. The transparent sealing box can move downward to abut against the top surface of the support panel to form a sealing space, in which the differential is placed.

[0008] The suction detection assembly includes a gas tank, which is placed on one side of the support panel. An exhaust pipe is fixedly installed on the top of the gas tank, and a valve is fixedly installed on the exhaust pipe. A pressure gauge is fixedly installed on the top of the gas tank. A vacuum pump is provided on one side of the gas tank. The outlet of the vacuum pump is connected to the gas tank through a gas pipe. A suction pipe is fixedly installed on the suction end of the vacuum pump. The other end of the suction pipe is fixedly installed on the support panel and connected to the aforementioned sealed space.

[0009] Preferably, the bottom of the support panel is fixedly equipped with multiple support legs, the height of which is between 60cm and 80cm.

[0010] Preferably, a sealing gasket is embedded in the top surface of the support panel, and the transparent sealing box moves downward and abuts against the top surface of the sealing gasket for sealing operation.

[0011] Preferably, a placement plate is fixedly installed at the center of the top surface of the support panel, and the differential is placed on the placement plate.

[0012] Preferably, a rectangular plate is fixedly mounted on the telescopic shaft of the cylinder, and the transparent sealing box is detachably mounted on the bottom surface of the rectangular plate.

[0013] Preferably, a guide post is fixedly installed on the top surface of the transparent sealed box, and a guide sleeve is fixedly installed on the bottom surface of the horizontal plate of the support frame. The bottom of the guide sleeve is fitted over the outside of the guide post and slidably connected to the guide post.

[0014] This feature makes the transparent sealed box more stable when moving up and down.

[0015] Preferably, the bottom of the gas tank is fixedly installed with multiple support bases, and the suction pipe is fixedly installed with a suction cylinder at the end of the pipe body on the support panel.

[0016] Preferably, a retaining ring is detachably connected to the top end face of the air intake cylinder, and a filter screen is fixedly installed on the inner side of the retaining ring;

[0017] The above two settings can use a filter screen to filter impurities, preventing impurities from entering the gas tank and affecting the accuracy of the test.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model achieves rapid construction and sealing of the differential testing environment by setting up a transparent sealed box driven by a cylinder and cooperating with a support panel to form a sealed space; by setting up a suction detection component consisting of a gas tank, a vacuum pump, etc., the vacuum pump is used to extract the gas in the sealed space, and the pressure is displayed by a pressure gauge, which can quickly detect the differential sealing performance, overcoming the defects of traditional water immersion technology that are affected by the size of the leak and slow detection, thus achieving the purpose of rapid detection.

[0020] 2. This utility model controls gas emission by setting an exhaust pipe and valve, ensuring safe and orderly testing operations. By setting a sealing gasket and a placement plate on the support panel, setting guide pillars and guide sleeves on the transparent sealed box, and setting an air suction cylinder with a filter screen at the end of the suction pipe, the stable operation and accurate testing of the testing device are achieved. The sealing gasket enhances the sealing effect, the placement plate ensures the stable placement of the differential, the guide pillars and guide sleeves make the movement of the transparent sealed box more stable, and the filter screen filters impurities to avoid affecting the accuracy of testing. Overall, it achieves the effect of improving the accuracy, reliability and stability of testing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the testing station of this utility model;

[0023] Figure 3 This is a schematic diagram of the suction detection component of this utility model;

[0024] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle;

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. Testing table; 10. Support panel; 11. Support leg; 12. Sealing gasket; 13. Placement plate; 14. Support frame; 15. Cylinder; 151. Rectangular plate; 16. Transparent sealing box; 17. Guide post; 18. Guide sleeve;

[0027] 2. Suction detection assembly; 20. Gas tank; 21. Support base; 22. Exhaust pipe; 23. Valve; 24. Pressure gauge; 25. Vacuum pump; 26. Gas pipe; 27. Suction pipe; 28. Suction cylinder; 29. ​​Filter screen; 291. Fixing ring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-4 This utility model provides a technical solution: a rapid testing device for differential sealing performance, including a testing platform 1 and a suction testing component 2. The testing platform 1 includes a support panel 10, and a support frame 14 is fixedly installed on the rear side of the top surface of the support panel 10. The support frame 14 has an L-shaped structure. A cylinder 15 is fixedly installed on the front side of the horizontal plate of the support frame 14. The telescopic shaft of the cylinder 15 is detachably connected to a transparent sealing box 16. The transparent sealing box 16 is located above the support panel 10. The transparent sealing box 16 can move downward to abut against the top surface of the support panel 10 to form a sealing space. The differential is placed in the sealing space, and the differential sealing test is performed by suctioning gas in the sealing space.

[0030] In this embodiment, the suction detection component 2 includes a gas tank 20, which is placed on one side of the support panel 10. An exhaust pipe 22 is fixedly installed on the top of the gas tank 20, and a valve 23 is fixedly installed on the exhaust pipe 22. A pressure gauge 24 is fixedly installed on the top of the gas tank 20. A vacuum pump 25 is provided on one side of the gas tank 20. The outlet end of the vacuum pump 25 is connected to the gas tank 20 through a gas pipe 26. A suction pipe 27 is fixedly installed on the suction end of the vacuum pump 25. The other end of the suction pipe 27 is fixedly installed on the support panel 10 and connected to the aforementioned sealed space.

[0031] During use, as the transparent sealed box 16 moves down and closes, the air content between the transparent sealed box 16 and the support panel 10 remains constant. At this time, as the suction operation is performed, the air in the sealed space is drawn into the gas tank 20, and the gas pressure in the gas tank 20 is also constant. If the differential on the support panel 10 leaks, because the differential contains air, the amount of gas drawn into the gas tank 20 increases, and the pressure in the gas tank 20 increases, proving that the differential is leaking, thus completing the rapid detection operation.

[0032] like Figure 1 and Figure 2As shown, multiple support legs 11 are fixedly installed at the bottom of the support panel 10. The height of the support legs 11 is between 60cm and 80cm, which allows the operator to perform the inspection operation in a comfortable posture. This conforms to the ergonomic design, reduces the labor intensity of the operator, and provides a stable support foundation for the entire inspection device.

[0033] like Figure 2 As shown, a sealing gasket 12 is embedded in the top surface of the support panel 10. After the transparent sealing box 16 moves downward, it abuts against the top surface of the sealing gasket 12 for sealing operation. When the transparent sealing box 16 moves downward and abuts against the sealing gasket 12, a good sealing effect can be formed, which can effectively prevent gas leakage during the test and ensure the sealing of the test environment and the accuracy of the test results.

[0034] like Figure 2 As shown, a placement plate 13 is fixedly installed at the center of the top surface of the support panel 10, and the differential is placed on the placement plate 13, thus providing placement space for the differential.

[0035] like Figure 2 As shown, a rectangular plate 151 is fixedly installed on the telescopic shaft of cylinder 15, and a transparent sealing box 16 is detachably installed on the bottom surface of the rectangular plate 151 by multiple fastening screws, which facilitates fixing, installation and disassembly operations.

[0036] like Figure 2 As shown, a guide post 17 is fixedly installed on the top surface of the transparent sealing box 16, and a guide sleeve 18 is fixedly installed on the bottom surface of the horizontal plate of the support frame 14. The bottom of the guide sleeve 18 is fitted around the outside of the guide post 17 and is slidably connected to the guide post 17, so that when the transparent sealing box 16 moves up and down under the drive of the cylinder 15, it can maintain a stable movement trajectory, avoid shaking or deviation, and further improve the sealing effect and the stability of the detection process.

[0037] like Figure 3 and Figure 4 As shown, multiple support bases 21 are fixedly installed at the bottom of the gas tank 20. The suction pipe 27 is fixedly installed on the end of the pipe body on the support panel 10, and a suction cylinder 28 is fixedly installed thereon. A fixing ring 291 is detachably connected to the top end face of the suction cylinder 28. A filter screen 29 is fixedly installed on the inner side of the fixing ring 291, so that the filter screen 29 can effectively filter impurities during the suction detection process, prevent impurities from entering the gas tank 20, prevent impurities from interfering with the detection results, and thus improve the accuracy of the detection.

[0038] Finally, it should be noted that the cylinder 15, pressure gauge 24, and vacuum pump 25 involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the spare parts of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle in this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0039] In the rapid testing device for differential sealing performance of this utility model, before use, when the differential is not placed on the placement plate 13, the transparent sealing box 16 is lowered to form a sealed space. By evacuating the air in the sealed space, the value on the pressure gauge 24 is observed to form an initial value. When the differential is placed and evacuation is performed again, the value on the pressure gauge 24 is compared with the initial value.

[0040] When in use, first place the differential to be tested on the placement plate 13 at the center of the top surface of the support panel 10; then, start the cylinder 15, and the telescopic shaft of the cylinder 15 drives the transparent sealing box 16 to move downward until the transparent sealing box 16 abuts against the sealing gasket 12 embedded in the top surface of the support panel 10, forming a closed sealing space.

[0041] Subsequently, the vacuum pump 25 is turned on. The vacuum pump 25 draws the air in the sealed space into the gas tank 20 through the suction pipe 27. During this process, since the air content between the transparent sealed box 16 and the support panel 10 is constant, if the gas content entering the gas tank 20 is equal to the air content between the transparent sealed box 16 and the support panel 10, it proves that the differential is well sealed and has no leakage. The result can be obtained by displaying the pressure on the pressure gauge 24.

[0042] Since the differential housing also contains some air, when the gas content entering the gas tank 20 exceeds the air content between the transparent sealing box 16 and the support panel 10, it proves that the differential is leaking. After the test is completed, turn off the vacuum pump 25, open the valve 23 on the exhaust pipe 22 to discharge the gas in the gas tank 20, then start the cylinder 15 to raise and reset the transparent sealing box 16, take out the tested differential, and complete one test process.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A device for rapid testing of differential sealing performance, characterized in that: The test includes a test stand (1) and a suction test assembly (2). The test stand (1) includes a support panel (10). A support frame (14) is fixedly installed on the rear side of the top surface of the support panel (10). A cylinder (15) is fixedly installed on the front side of the horizontal plate of the support frame (14). The telescopic shaft of the cylinder (15) is detachably connected to a transparent sealing box (16). The transparent sealing box (16) is located above the support panel (10). The transparent sealing box (16) can move downward to abut against the top surface of the support panel (10) to form a sealing space. The differential is placed in the sealing space. The suction detection assembly (2) includes a gas tank (20), which is placed on one side of the support panel (10). An exhaust pipe (22) is fixedly installed on the top of the gas tank (20), and a valve (23) is fixedly installed on the exhaust pipe (22). A pressure gauge (24) is fixedly installed on the top of the gas tank (20). A vacuum pump (25) is provided on one side of the gas tank (20). The outlet end of the vacuum pump (25) is connected to the gas tank (20) through a gas pipe (26). A suction pipe (27) is fixedly installed on the suction end of the vacuum pump (25). The other end of the suction pipe (27) is fixedly installed on the support panel (10) and connected to the aforementioned sealed space.

2. The rapid testing device for differential sealing performance according to claim 1, characterized in that: The bottom of the support panel (10) is fixedly equipped with multiple support legs (11), and the height of the support legs (11) is between 60cm and 80cm.

3. The rapid testing device for differential sealing performance according to claim 1, characterized in that: The top surface of the support panel (10) is inlaid with a sealing gasket (12), and the transparent sealing box (16) moves downward and abuts against the top surface of the sealing gasket (12) for sealing operation.

4. The rapid testing device for differential sealing performance according to claim 1, characterized in that: A placement plate (13) is fixedly installed at the center of the top surface of the support panel (10), and the differential is placed on the placement plate (13).

5. The rapid testing device for differential sealing performance according to claim 1, characterized in that: The telescopic shaft of the cylinder (15) is fixedly mounted with a rectangular plate (151), and the transparent sealing box (16) is detachably mounted on the bottom surface of the rectangular plate (151).

6. The rapid testing device for differential sealing performance according to claim 1, characterized in that: A guide post (17) is fixedly installed on the top surface of the transparent sealed box (16), and a guide sleeve (18) is fixedly installed on the bottom surface of the horizontal plate of the support frame (14). The bottom of the guide sleeve (18) is fitted outside the guide post (17) and slidably connected to the guide post (17).

7. The rapid testing device for differential sealing performance according to claim 1, characterized in that: The bottom of the gas tank (20) is fixedly installed with multiple support bases (21), and the suction pipe (27) is fixedly installed on the end of the pipe body on the support panel (10) with a suction cylinder (28).

8. The rapid testing device for differential sealing performance according to claim 7, characterized in that: A retaining ring (291) is detachably connected to the top end face of the air intake (28), and a filter screen (29) is fixedly installed on the inner side of the retaining ring (291).

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