Inflatable sealing column

Abstract

The utility model discloses an inflatable sealing column, and belongs to the technical field of shock absorber detection. The problems of low efficiency and shock absorption oil leakage caused by repeated disassembly in a shock absorber foundation damping force value testing process in the prior art are solved. A sealing column connecting part is arranged on the lower end face of the sealing column body in a protruding mode, a transverse through hole is formed in the sealing column connecting part, a vertical through hole is formed in the sealing column body, the vertical through hole is communicated with the transverse through hole, a valve assembly used for inflating and deflating the sealing column body is arranged at the upper end of the sealing column body, and the valve assembly is communicated with the vertical through hole. The side wall of the lower end of the sealing column body is provided with an external thread matched with an internal thread of an electromagnetic valve seat of the shock absorber, a first annular groove is formed in the position, close to the upper portion of the external thread, of the side wall of the sealing column body, and a first sealing ring is arranged in the first annular groove. The inflatable sealing column provided by the utility model is used for testing a basic damping force value of a shock absorber, the basic damping force value testing efficiency is improved, shock absorption oil leakage is reduced, and the testing accuracy is improved.

Description

Technical Field

[0001] This utility model belongs to the field of vibration damper testing technology, specifically, it relates to an inflatable sealing column. Background Technology

[0002] Currently, in the manufacturing and testing of CDC vibration dampers, the testing of the basic damping force value requires the use of a dedicated sealing column fixture to replace the solenoid valve for functional verification. This fixture uses a threaded connection structure, with an O-ring seal at the top for oil sealing, and a hexagonal step on the end face to facilitate torque application. However, the existing sealing column fixture has significant technical defects when applied to the sealing components of CDC vibration dampers: First, after installation, the inflation and deflation channels are blocked, requiring repeated disassembly and gas adjustment, resulting in a reduction in testing efficiency of more than 40%; second, the sealing interface design is unreasonable, making oil leakage prone to occur during air pressure adjustment, with an average loss of about 15mL of hydraulic oil per test, which increases material costs and affects environmental cleanliness and testing accuracy.

[0003] Technical analysis revealed that the root cause of the problem lies in the limitations of the original design concept. Existing sealing columns were primarily developed for testing the adjustable components of CDC shock absorbers, without considering their application in CDC shock absorber sealing components. When used in sealing components, both deflation and inflation require manual operation at the shock absorber's oil seal, which not only leads to oil loss but also damages the oil seal structure. Utility Model Content

[0004] The present invention provides an inflatable sealing column to improve the testing efficiency of the basic damping force value of the shock absorber and reduce the leakage of damping oil.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This utility model discloses an inflatable sealing column, comprising a sealing column body, a sealing column connecting portion protruding from the lower end face of the sealing column body, a transverse through hole extending radially from the sealing column body, and a vertical through hole extending axially from the sealing column body, the vertical through hole communicating with the transverse through hole. An air valve assembly for inflating and deflating the sealing column body is provided at the upper end of the sealing column body, the air valve assembly communicating with the vertical through hole. An external thread engaging with the internal thread of the electromagnetic valve seat of a shock absorber is provided on the lower sidewall of the sealing column body. A first annular groove is provided on the sidewall of the sealing column body above the external thread, and a first sealing ring is provided within the first annular groove.

[0007] Furthermore, the vertical through hole is coaxial with the sealing column body.

[0008] Furthermore, the upper end face of the sealing column body is provided with a valve assembly mounting part, the valve assembly mounting part is provided with an internal thread, and the outer side wall of the valve seat of the valve assembly is provided with an external thread that mates with the internal thread of the valve assembly mounting part.

[0009] Furthermore, the outer wall of the valve seat of the valve assembly is provided with a second annular groove, and a second sealing ring is provided in the second annular groove.

[0010] Furthermore, a screwing part with a hexagonal prism profile is provided around the outer side of the valve assembly mounting portion.

[0011] The beneficial effects of this utility model are:

[0012] This application provides an inflatable sealing column for testing the basic damping force of a vibration damper. A vertical through-hole extends axially from the top to the bottom of the sealing column body, and a horizontal through-hole extends radially from the left to the right end of the sealing column connection at the bottom of the sealing column body. The lower end of the vertical through-hole communicates with the horizontal through-hole to form an inflation / deflation channel. A valve assembly is installed at the top of the sealing column body and communicates with the vertical through-hole. External threads are provided on the lower sidewall of the sealing column body. During the basic damping force test of the shock absorber, air is released through the oil seal of the shock absorber. The solenoid valve is loosened and removed from the solenoid valve seat. The lower end of the inflatable sealing column is inserted into the solenoid valve seat, with the external thread of the lower end of the sealing column body engaging with the internal thread of the solenoid valve seat. The inflatable sealing column is then tightened and fixed onto the solenoid valve seat. The valve assembly is inflated using an air compressor. The inflated gas enters the transverse through-hole along the vertical through-hole, and then enters the shock absorber's channel through the transverse through-hole, interacting with the damping oil to maintain a stable damping force. The basic damping force value is measured on the test bench. After passing the test, air is released through the valve assembly. Then, the inflatable sealing column is loosened and removed from the solenoid valve seat. The solenoid valve seat is replaced with a solenoid valve and tightened. Air is then introduced through the oil seal. This eliminates the need for manual inflation / deflation at the oil seal, thus completing the test without damaging the oil seal's sealing structure. The test process eliminates the need for repeated disassembly and inflation / deflation adjustments, reducing operation time, shortening the test cycle, and improving the efficiency of testing the basic damping force value of the shock absorber. It also avoids damping oil leakage caused by repeated and frequent disassembly. A first annular groove is provided on the side wall of the sealing column body, and a first sealing ring is installed within the first annular groove. The sealing column body is threadedly fixed to the solenoid valve seat, ensuring a good seal and significantly reducing damping oil leakage during the test, thus reducing oil loss and improving test accuracy. The inflatable sealing column is threadedly fitted to the solenoid valve seat of the shock absorber, offering strong compatibility and making it particularly suitable for testing the basic damping force value of CDC shock absorbers. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a cross-sectional view of an inflatable sealing column provided in an embodiment of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of an inflatable sealing column provided in an embodiment of this utility model;

[0016] Figure 3 This is a cross-sectional view of an inflatable sealing column installed on the electromagnetic valve seat of a shock absorber, according to an embodiment of this utility model.

[0017] Figure label:

[0018] The sealing column body 1 has a vertical through hole 101, a horizontal through hole 102, a first annular groove 103, a valve assembly 2, a valve seat 201, a second sealing ring 3, a valve assembly mounting part 4, a first sealing ring 5, a sealing column connecting part 6, a screwing part 7, a solenoid valve seat 8, and a shock absorber 9. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figure 1 , Figure 2 , Figure 3As shown, this embodiment provides an inflatable sealing column, including a sealing column body 1. The lower end face of the sealing column body 1 is provided with a sealing column connecting part 6. The sealing column connecting part 6 is provided with a transverse through hole 102 extending radially along the sealing column body 1. The sealing column body 1 is provided with a vertical through hole 101 extending axially along the sealing column body 1. The vertical through hole 101 communicates with the transverse through hole 102. The upper end of the sealing column body 1 is provided with a valve assembly 2 for inflating and deflating the sealing column body 1. The valve assembly 2 communicates with the vertical through hole 101. The lower end sidewall of the sealing column body 1 is provided with an external thread that mates with the internal thread of the solenoid valve seat 8 of the shock absorber 9. The sidewall of the sealing column body 1 is provided with a first annular groove 103 above the external thread of the sealing column body 1. A first sealing ring 5 that mates with the first annular groove 103 is provided in the first annular groove 103. Among them, the sealing column connecting part 6 and the sealing column body 1 are steel structural components, and the sealing column connecting part 6 and the sealing column body 1 are integrally formed structures.

[0022] An inflatable sealing column based on the above structure is used for testing the basic damping force value of a vibration damper. A vertical through hole 101 is opened from the upper end to the lower end of the sealing column body 1 along the axial direction of the sealing column body 1, and a horizontal through hole 102 is opened from the left end to the right end of the sealing column connecting part 6 at the lower end of the sealing column body 1 along the radial direction of the sealing column body 1. The lower end of the vertical through hole 101 and the horizontal through hole 102 communicate to form an inflation / deflation channel. A valve assembly 2 is installed at the upper end of the sealing column body 1 and communicates with the vertical through hole 101. An external thread is provided on the lower end side wall of the sealing column body 1. During the basic damping force test of the shock absorber, air is released through the oil seal of the shock absorber. The solenoid valve is loosened and removed from the solenoid valve seat 8. The lower end of the inflatable sealing column is inserted into the solenoid valve seat, with the external thread of the lower end of the sealing column body 1 engaging with the internal thread of the solenoid valve seat 8. The inflatable sealing column is then tightened and fixed onto the solenoid valve seat 8. The valve assembly 2 is inflated using an air compressor. The inflated gas enters the transverse through-hole 102 through the vertical through-hole 101, and then enters the channel of the shock absorber 9 through the transverse through-hole 102, interacting with the damping oil to maintain damping. After the force stabilizes and the basic damping force value is measured on the test bench and passes the test, air is released through valve assembly 2. Then, the inflatable sealing column is loosened from the solenoid valve seat 8 and removed. The solenoid valve seat 8 is replaced with a solenoid valve and tightened. Air is then injected through the oil seal. This eliminates the need for air injection / release operations through the oil seal, and avoids damaging the sealing structure of the solenoid valve and solenoid valve seat 8. The test can be completed without repeated disassembly for air injection / release adjustments, reducing operation time, shortening the test cycle, improving the efficiency of testing the basic damping force value of the shock absorber, and avoiding damping oil leakage caused by repeated and frequent disassembly. A first annular groove is provided on the side wall of the sealing column body 1, and a first sealing ring 5 is installed in the first annular groove. The sealing column body 1 is threadedly fixed to the solenoid valve seat 8, ensuring a sealing effect, greatly reducing shock oil leakage during the test, reducing oil loss, and improving test accuracy. The inflatable sealing column is threadedly installed with the solenoid valve seat 8 of the shock absorber 9, offering strong compatibility and being particularly suitable for testing the basic damping force value of CDC shock absorbers.

[0023] As one possible implementation method, such as Figure 1 , Figure 2 , Figure 3 As shown, the vertical through hole 101 is coaxial with the sealing column body 1.

[0024] The vertical through hole 101 is set along the central axis of the sealing column body 1 to ensure the stability of the sealing column and facilitate drilling.

[0025] As one possible implementation method, such as Figure 1 , Figure 2 , Figure 3As shown, the upper end face of the sealing column body 1 is provided with a valve assembly mounting part 4, the valve assembly mounting part 4 is provided with an internal thread, and the lower end outer side wall of the valve seat 201 of the valve assembly 2 is provided with an external thread that mates with the internal thread of the valve assembly mounting part 4.

[0026] The valve assembly 2 and the sealing column body 1 are connected by a threaded connection between the external thread of the valve seat 201 and the internal thread of the valve assembly mounting part 4. This detachable connection is simple, reliable, easy to install and disassemble, and provides a seal. The external thread can be machined using a threading machine, and the internal thread can be machined using a threading machine. The valve assembly mounting part 4 is a steel structural component, and it and the sealing column body 1 are integrally formed. The valve assembly 2 is like a tire valve core, and the valve seat 201 is the lower end column of the valve core.

[0027] As one possible implementation method, such as Figure 1 , Figure 2 , Figure 3 As shown, the lower outer wall of the valve seat 201 of the valve assembly 2 is provided with a second annular groove, and a second sealing ring 3 is provided in the second annular groove.

[0028] A second annular groove is provided around the lower side wall of the valve seat 201. A matching second sealing ring 3 is installed in the second annular groove to effectively seal the valve and prevent gas leakage during testing from affecting the test results. The second annular groove is located above the external thread of the valve seat 201.

[0029] As one possible implementation method, such as Figure 1 , Figure 3 As shown, a screwing part 7 with a hexagonal prism outline is provided around the outer side of the valve assembly mounting part 4.

[0030] The screwing part 7 is designed to facilitate the installation and tightening of the inflatable sealing column in the solenoid valve seat 8 of the shock absorber 9 before testing, or to loosen and remove the inflatable sealing column from the solenoid valve seat 8 of the shock absorber 9 after testing.

[0031] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. An inflatable containment column, characterized by, The sealing column body (1) is provided with a sealing column connecting part (6) on the lower end surface, the sealing column connecting part (6) is provided with a transverse through hole (102) along the radial direction of the sealing column body (1), the sealing column body (1) is provided with a vertical through hole (101) along the axial direction, the vertical through hole (101) is communicated with the transverse through hole (102), the upper end of the sealing column body (1) is provided with a valve assembly (2) for charging and discharging the sealing column body (1), the valve assembly (2) is communicated with the vertical through hole (101), the lower end side wall of the sealing column body (1) is provided with external threads matched with the internal threads of the electromagnetic valve seat (8) of the shock absorber (9), the side wall of the sealing column body (1) is provided with a first annular groove (103) above the external threads of the sealing column body (1), and the first annular groove (103) is provided with a first sealing ring (5).

2. An inflatable containment column according to claim 1, wherein, The vertical through hole (101) is coaxial with the sealing column body (1).

3. An inflatable containment column according to claim 1, wherein, The upper end surface of the sealing column body (1) is provided with a valve assembly mounting part (4), the valve assembly mounting part (4) is provided with internal threads, and the lower end outer side wall of the valve seat (201) of the valve assembly (2) is provided with external threads matched with the internal threads of the valve assembly mounting part (4).

4. An inflatable containment column according to claim 3, wherein, The outer side wall of the valve seat (201) of the valve assembly (2) is provided with a second annular groove, and the second annular groove is provided with a second sealing ring (3).

5. An inflatable containment column according to claim 3, wherein, The valve assembly mounting part (4) is provided with a screwing part (7) with a hexagonal prism profile outside.

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