Shock absorber leakage test equipment

Abstract

The utility model discloses shock absorber leakage test equipment, which comprises a shell, a piston rod is plugged in the shell, and a sealing structure is arranged outside the joint of the shell and the piston rod. A shell of the shock absorber is sleeved with a first rubber ring in the fabric layer, a piston rod of the shock absorber is sleeved with a second rubber ring in the fabric layer, a first pressure ball is pressed, air is injected into the first rubber ring through a first connecting pipe, the first rubber ring is tightly attached to the outside of the shell, meanwhile, a second pressure ball is pressed, and air is injected into the second rubber ring through a second connecting pipe. If air leakage occurs between the shock absorber shell and the piston rod, the reading on the pressure gauge changes, and if air leakage does not occur between the shock absorber shell and the piston rod, the reading on the pressure gauge does not change. Leakage between the shock absorber shell and the piston rod can be conveniently tested.

Description

Technical Field

[0001] This patent relates to the technical field of shock absorber leakage testing equipment, specifically a shock absorber leakage testing equipment. Background Art

[0002] A necessary condition for a car to be able to drive safely on the road is to have a car shock absorber. With the shock absorber, the car can be very stable on the bumpy road. The car shock absorber has a certain service life. It is necessary to detect various problems of the car shock absorber in time, such as leakage between the outer shell and the piston rod. Testing equipment is required, but the current shock absorber leakage test equipment is not convenient to be tightly connected between the shock absorber outer shell and the piston rod, resulting in air leakage during the test, which affects the normal shock absorber leakage test. Utility Model Content

[0003] The purpose of this patent is to provide a shock absorber leakage testing device.

[0004] To achieve the above purpose, this patent provides the following technical solutions: a shock absorber leakage test device, comprising a housing, a piston rod is inserted into the housing, and a sealing structure is arranged outside the connection between the housing and the piston rod;

[0005] The sealing structure comprises a first rubber ring, a first connecting tube, a first pressure ball, a second rubber ring, a second connecting tube, a second pressure ball and a fabric layer;

[0006] The first rubber ring is installed on one side of the fabric layer, the second rubber ring is installed on the other side of the fabric layer, the first rubber ring is sleeved outside the shell, the second rubber ring is sleeved outside the piston rod, the first connecting tube is connected to the first rubber ring, the first pressure ball is connected to the first connecting tube, the second connecting tube is connected to the second rubber ring, and the second pressure ball is connected to the second connecting tube;

[0007] A round opening is provided on the fabric layer, and a pressure gauge is installed in the round opening.

[0008] Preferably, a first sealing ring is installed between the first rubber ring and the fabric layer;

[0009] A second sealing ring is installed between the second rubber ring and the fabric layer.

[0010] Preferably, a protective structure is installed on the pressure gauge, and the protective structure includes an observation port and a transparent plastic plate;

[0011] The observation port is opened at the front end of the pressure gauge, and the transparent plastic plate is installed in the observation port.

[0012] Preferably, an internally threaded tube is installed in the circular opening, an externally threaded tube is installed in the air inlet of the pressure gauge, and the internally threaded tube is sleeved in the externally threaded tube.

[0013] Preferably, the outer threaded tube is covered with a sealing gasket, and the sealing gasket is pressed on the inner threaded tube.

[0014] Preferably, a lower bushing is installed on the outer shell, a threaded opening is opened in the piston rod, a threaded rod is sleeved in the threaded opening, and an upper bushing is installed on the threaded rod.

[0015] Compared with the prior art, the beneficial effects of this patent are: the shock absorber leakage test equipment has the following advantages compared with the traditional technology:

[0016] 1. Put the first rubber ring in the fabric layer on the outer shell of the shock absorber, and put the second rubber ring in the fabric layer on the piston rod of the shock absorber. Press the first pressure ball, and then inject air into the first rubber ring through the first connecting pipe, so that the first rubber ring is tightly attached to the outside of the outer shell. At the same time, press the second pressure ball, and then inject air into the second rubber ring through the second connecting pipe, so that the second rubber ring is tightly attached to the outside of the piston rod, so as to seal the through hole on the shock absorber outer shell and press the piston rod into the outer shell. If there is air leakage between the shock absorber outer shell and the piston rod, the reading on the pressure gauge will change. If there is no air leakage, the reading on the pressure gauge will remain unchanged, which is convenient for testing the leakage between the shock absorber outer shell and the piston rod.

[0017] 2. The first sealing ring is made of rubber material to enhance the sealing between the first rubber ring and the fabric layer. The second sealing ring is made of rubber material to enhance the sealing between the second rubber ring and the fabric layer. The pressure gauge display reading is observed through the transparent plastic plate in the observation port, and the transparent glass plate protects the display screen of the pressure gauge to prevent the display screen of the pressure gauge from being scratched. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of this patent;

[0019] Figure 2 This is a schematic diagram of the structure of the first rubber ring, the second rubber ring and the fabric layer of this patent;

[0020] Figure 3 This is a schematic diagram of the structure of the first rubber ring, the first connecting tube and the first pressure ball of this patent.

[0021] In the figure: 1, outer shell, 2, piston rod, 3, lower bushing, 4, sealing structure, 401, first rubber ring, 402, first connecting pipe, 403, first pressure ball, 404, second rubber ring, 405, second connecting pipe, 406, second pressure ball, 407, fabric layer, 5, threaded rod, 6, upper bushing, 7, pressure gauge, 8, observation port, 9, transparent plastic plate, 10, internal threaded pipe, 11, external threaded pipe, 12, sealing gasket, 13, round mouth, 14, first sealing ring, 15, second sealing ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of this patent to clearly and completely describe the technical solutions in the embodiments of this patent. Obviously, the described embodiments are only part of the embodiments of this patent, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0023] See also Figure 1-3 , this patent provides a technical solution: a shock absorber leakage test device, including a housing 1, a piston rod 2 is inserted into the housing 1, and a sealing structure 4 is arranged outside the connection between the housing 1 and the piston rod 2;

[0024] The sealing structure 4 includes a first rubber ring 401, a first connecting tube 402, a first pressure ball 403, a second rubber ring 404, a second connecting tube 405, a second pressure ball 406 and a fabric layer 407;

[0025] The first rubber ring 401 is installed on one side of the fabric layer 407, the first rubber ring 401 is made of hollow soft rubber material, the fabric layer 407 is made of nylon fabric material and is airtight, the second rubber ring 404 is installed on the other side of the fabric layer 407, the second rubber ring 404 is made of hollow soft rubber material, the first rubber ring 401 is sleeved outside the outer shell 1, the second rubber ring 404 is sleeved outside the piston rod 2, the first connecting tube 402 is connected to the first rubber ring 401, the first pressure ball 403 is connected to the first connecting tube 402, the second connecting tube 405 is connected to the second rubber ring 404, and the second pressure ball 406 is connected to the second connecting tube 405;

[0026] A round opening 13 is provided on the fabric layer 407, and a pressure gauge 7 is installed in the round opening 13. The model of the pressure gauge 7 is MLK-Y190;

[0027] The first rubber ring 401 in the fabric layer 407 is put on the shell 1 on the shock absorber, and the second rubber ring 404 in the fabric layer 407 is put on the piston rod 2 on the shock absorber. The first pressure ball 403 is pressed, and air is injected into the first rubber ring 401 through the first connecting tube 402, so that the first rubber ring 401 is tightly attached to the outside of the shell 1. At the same time, the second pressure ball 406 is pressed, and air is injected into the second rubber ring 404 through the second connecting tube 405, so that the second rubber ring 404 is tightly attached to the outside of the piston rod 2, so that the through hole on the shock absorber shell 1 is sealed, and the piston rod 2 is pressed tightly into the shell 1. If air is leaked between the shock absorber shell 1 and the piston rod 2, the reading on the pressure gauge 7 will change. If air is not leaked, the reading on the pressure gauge 7 will remain unchanged, which is convenient for testing leakage between the shock absorber shell 1 and the piston rod 2.

[0028] A first sealing ring 14 is installed between the first rubber ring 401 and the fabric layer 407. The first sealing ring 14 is made of rubber material to enhance the sealing between the first rubber ring 401 and the fabric layer 407.

[0029] A second sealing ring 15 is installed between the second rubber ring 404 and the fabric layer 407 . The second sealing ring 15 is made of rubber material to enhance the sealing between the second rubber ring 404 and the fabric layer 407 .

[0030] A protective structure is installed on the pressure gauge 7, and the protective structure includes an observation port 8 and a transparent plastic plate 9;

[0031] The observation port 8 is opened at the front end of the pressure gauge 7, and a transparent plastic plate 9 is installed in the observation port 8. The reading of the pressure gauge 7 is observed through the transparent plastic plate 9 in the observation port 8, and the transparent glass plate 9 protects the display screen of the pressure gauge 7 to prevent the display screen of the pressure gauge 7 from being scratched.

[0032] An internally threaded tube 10 is installed in the circular opening 13 , an externally threaded tube 11 is installed in the air inlet of the pressure gauge 7 , and the internally threaded tube 10 is sleeved in the externally threaded tube 11 .

[0033] The outer threaded tube 11 is covered with a sealing gasket 12, which is pressed on the inner threaded tube 10. The pressure gauge 7 is screwed into the inner threaded tube 10 with the outer threaded tube 11, and the sealing gasket 12 is pressed therebetween, so that the inner threaded tube 10 and the outer threaded tube 11 are connected and sealed.

[0034] A lower bushing 3 is installed on the outer shell 1, and the lower bushing 3 on the outer shell 1 is connected to the vehicle chassis. A threaded opening is opened in the piston rod 2, and a threaded rod 5 is sleeved in the threaded opening. An upper bushing 6 is installed on the threaded rod 5. The threaded rod 5 is screwed in the threaded opening on the piston rod 2 to adjust the length, and then the upper bushing 6 is connected to the upper shell of the vehicle.

[0035] When using the shock absorber leakage test equipment, first, when the shock absorber is used, the lower bushing 3 on the outer shell 1 is connected to the vehicle chassis, so that the threaded rod 5 is screwed in the threaded opening on the piston rod 2 to adjust the length, and the upper bushing 6 is connected to the upper shell of the vehicle for use, so that the pressure gauge 7 with the external threaded tube 11 is screwed into the internal threaded tube 10, and the sealing gasket 12 is pressed in between to make the connection between the internal threaded tube 10 and the external threaded tube 11 sealed. During the test, the first rubber ring 401 in the fabric layer 407 is put on the outer shell 1 on the shock absorber, and the second rubber ring 404 in the fabric layer 407 is put on the piston rod 2 on the shock absorber. When the first pressure ball 403 is pressed, air is injected into the first rubber ring 401 through the first connecting tube 402, so that the first rubber ring 401 is tightly attached to the outside of the housing 1. At the same time, when the second pressure ball 406 is pressed, air is injected into the second rubber ring 404 through the second connecting tube 405, so that the second rubber ring 404 is tightly attached to the outside of the piston rod 2, thereby sealing the through hole on the shock absorber housing 1 and pressing the piston rod 2 into the housing 1. If air is leaked between the shock absorber housing 1 and the piston rod 2, the reading on the pressure gauge 7 changes. If air is not leaked, the reading on the pressure gauge 7 remains unchanged, which is convenient for testing leakage between the shock absorber housing 1 and the piston rod 2.

[0036] Although the embodiments of the present patent have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present patent, and the scope of the present patent is defined by the appended claims and their equivalents.

Claims

1. A shock absorber leakage test device, comprising a housing (1), characterized in that: A piston rod (2) is inserted into the outer shell (1), and a sealing structure (4) is provided outside the connection between the outer shell (1) and the piston rod (2); The sealing structure (4) comprises a first rubber ring (401), a first connecting tube (402), a first pressure ball (403), a second rubber ring (404), a second connecting tube (405), a second pressure ball (406) and a fabric layer (407); The first rubber ring (401) is installed on one side of the fabric layer (407), and the second rubber ring (404) is installed on the other side of the fabric layer (407). The first rubber ring (401) is sleeved on the outside of the outer shell (1), and the second rubber ring (404) is sleeved on the outside of the piston rod (2). The first connecting tube (402) is connected to the first rubber ring (401), the first pressure ball (403) is connected to the first connecting tube (402), the second connecting tube (405) is connected to the second rubber ring (404), and the second pressure ball (406) is connected to the second connecting tube (405); The fabric layer (407) is provided with a circular opening (13), and a pressure gauge (7) is installed in the circular opening (13).

2. A shock absorber leakage test device according to claim 1, characterized in that: A first sealing ring (14) is installed between the first rubber ring (401) and the fabric layer (407); A second sealing ring (15) is installed between the second rubber ring (404) and the fabric layer (407).

3. A shock absorber leakage test device according to claim 1, characterized in that: The pressure gauge (7) is provided with a protective structure, the protective structure comprising an observation port (8) and a transparent plastic plate (9); The observation port (8) is opened at the front end of the pressure gauge (7), and the transparent plastic plate (9) is installed in the observation port (8).

4. A shock absorber leakage test device according to claim 1, characterized in that: An internally threaded tube (10) is installed in the circular opening (13), an externally threaded tube (11) is installed in the air inlet of the pressure gauge (7), and the internally threaded tube (10) is sleeved in the externally threaded tube (11).

5. A shock absorber leakage test device according to claim 4, characterized in that: The outer threaded tube (11) is covered with a sealing gasket (12), and the sealing gasket (12) is pressed onto the inner threaded tube (10).

6. A shock absorber leakage test device according to claim 1, characterized in that: A lower bushing (3) is installed on the outer shell (1), a threaded opening is provided in the piston rod (2), a threaded rod (5) is sleeved in the threaded opening, and an upper bushing (6) is installed on the threaded rod (5).

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