Tool for detecting air tightness of air spring piston arm
By designing a testing fixture consisting of a base, a test bench, a sleeve, a limit column and a vent pipe, the problem of inaccurate air tightness testing of the air spring piston arm was solved, and an efficient and low-cost testing effect was achieved.
Patent Information
- Application Number
- CN202422488387.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-15
AI Technical Summary
Existing air spring piston arm air tightness testing equipment lacks unified standards, resulting in inaccurate testing and high maintenance costs.
A testing fixture is designed, which includes a base, a test bench, a sleeve, a limit column and a vent tube. The stability and sealing of the piston arm on the test bench are ensured by the interference fit between the piston arm and the sleeve, the clip-on fit of the limit column, and the design of the sealing ring and the positioning pin.
The invention realizes 100% effective detection of the piston arm of the air spring, reduces the labor intensity of workers, improves the product qualification rate, and has the advantages of simple structure, strong versatility, good assembly and low maintenance cost.
Smart Images
Figure CN223346339U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of air tightness detection equipment, and in particular relates to an air tightness detection tool for an air spring piston arm. Background Art
[0002] The air tightness test of the air spring piston arm is an essential and important part of the product's factory inspection. However, there is no clear and unified standard for the existing tooling for air spring piston arm air tightness testing. Therefore, it is very necessary to design a testing tool with a simple structure, strong versatility, good assembly, low manufacturing and maintenance costs, and high reliability. Utility Model Content
[0003] The purpose of the utility model is to solve the defects and shortcomings in the prior art and to design a tool for testing the air tightness of the air spring piston arm which has a simple structure, strong versatility, good assembly, low manufacturing and maintenance costs, and high reliability.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a tool for testing the air tightness of the air spring piston arm, comprising a base and a test bench arranged on the base, a sleeve for sealingly connecting to one end of the piston arm is provided on the test bench, the other end of the piston arm is limited by a limiting column, the outer side of the sleeve is sealed and connected to the ventilation pipe, and a positioning pin is provided between the ventilation pipe and the test bench.
[0005] Preferably, the limiting column is provided on the base and is located on one side of the test bench.
[0006] Preferably, one end of the piston arm is interference-fitted with the inner wall of the sleeve through an elastic ring, and the other end is snap-fitted with the clamping block on the limiting column through a clamping groove.
[0007] Preferably, the test bench has a horizontally arranged stepped through hole, the sleeve and the vent pipe are movably installed in the stepped through hole, and the sleeve, the vent pipe and the stepped through hole are coaxially arranged.
[0008] Preferably, one end of the sleeve is sealingly sleeved with the vent pipe, and the other end is limitedly engaged with the stepped through hole through a step surface.
[0009] Preferably, a sealing ring is provided between the sleeve and the vent pipe, and the outer wall of the sleeve has a sealing groove matched with the sealing ring.
[0010] Preferably, the test bench has a vertically arranged pin hole, and the positioning pin is movably installed in the pin hole.
[0011] Preferably, the positioning pin is perpendicular to the vent pipe, and the vent pipe has a locking groove that matches the positioning pin.
[0012] After adopting the above technical solution, the utility model provides a tool for testing the air tightness of the air spring piston arm, which has the following beneficial effects:
[0013] The utility model is designed to have an interference fit between one end of the piston arm and the sleeve, and a clip-fit design between the other end and the limit column, which can ensure the stability of the piston arm on the test bench and the sealing between the piston arm and the sleeve; the design of the sealing ring can ensure the sealing of the connection between the vent pipe and the sleeve; the design of the positioning pin and the locking groove can ensure the stability of the position of the vent pipe, and prevent the vent pipe from popping out of the test bench under the action of gas pressure after inflation. In summary, the use of the utility model to perform air tightness testing on the air spring piston arm can achieve 100% effective testing, reduce the labor intensity of workers, and improve the qualified rate of the air spring piston arm. It has the advantages of simple structure, strong versatility, good assembly, low manufacturing and maintenance costs, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a structural cross-sectional view of a tool for testing air tightness of an air spring piston arm according to the present invention;
[0015] Figure 2 The utility model is a structural schematic diagram of a tool for testing the air tightness of an air spring piston arm.
[0016] Among them: base 1, test bench 2, piston arm 3, sleeve 4, limit column 5, vent pipe 6, positioning pin 7, elastic ring 8, slot 9, block 10, stepped through hole 11, sealing ring 12, sealing groove 13, pin hole 14, locking groove 15. DETAILED DESCRIPTION
[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments described are merely a portion of the embodiments of the present invention, and not all of them. The following description of at least one exemplary embodiment is merely illustrative and in no way limits the present invention, its application, or use. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.
[0018] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0019] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.
[0020] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.
[0021] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.
[0022] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.
[0023] The utility model discloses a tool for detecting air tightness of an air spring piston arm. Figure 1-2 As shown, it includes a base 1 and a test bench 2 arranged on the base 1, a sleeve 4 for sealingly connecting to one end of the piston arm 3 is provided on the test bench 2, and the other end of the piston arm 3 is limited by the limiting column 5. Specifically, the limiting column 5 is provided on the base 1 and is located on one side of the test bench 2. One end of the piston arm 3 is interference fit with the inner wall of the sleeve 4 through an elastic ring 8, and the other end is clamped with the clamping block 10 on the limiting column 5 through a clamping groove 9. Such a design can ensure the stability of the piston arm 3 on the test bench 2 and the sealing between the piston arm 3 and the sleeve 4.
[0024] The outer side of the sleeve 4 is sealed and connected to the vent pipe 6. A positioning pin 7 is set between the vent pipe 6 and the test bench 2. Specifically, the test bench 2 has a horizontally arranged stepped through hole 11. The sleeve 4 and the vent pipe 6 are both movably installed in the stepped through hole 11, and the sleeve 4, the vent pipe 6 and the stepped through hole 11 are coaxially arranged. One end of the sleeve 4 is sealed and connected to the vent pipe 6. Further, a sealing ring 12 is set between the sleeve 4 and the vent pipe 6. The outer wall of the sleeve 4 has a sealing ring. 12 cooperates with the sealing groove 13, the other end of the sleeve 4 is limited by the step surface and the stepped through hole 11 to ensure the position stability of the sleeve 4, the test bench 2 has a vertically arranged pin hole 14, the positioning pin 7 is movably installed in the pin hole 14, further, the positioning pin 7 is perpendicular to the vent pipe 6, and the vent pipe 6 has a locking groove 15 that cooperates with the positioning pin 7, and the position of the vent pipe 6 can be locked by the cooperation connection between the positioning pin 7 and the locking groove 15.
[0025] The utility model discloses a tool for testing the air tightness of an air spring piston arm. When using the tool, first, put the sleeve 4 into the stepped through hole 11 from right to left, and then pass the end of the piston arm 3 with the card slot 9 from right to left out of the sleeve 4 until it is engaged with the card block 10 on the limit column 5. At this time, the elastic ring 8 at the other end of the piston arm 3 is interference fit with the inner wall of the sleeve 4, and then put the vent pipe 6 into the stepped through hole 11 from right to left, so that one end of it is sealed and sleeved with the sleeve 4, and finally insert the positioning pin 7 from the upper right to the bottom into the pin hole 14 until it is engaged with the locking groove 15, and the assembly is completed. At this time, gas is filled into the vent pipe 6 to perform the air tightness test on the piston arm 3.
[0026] To sum up, the utility model provides a tool for detecting the air tightness of an air spring piston arm, which can perform 100% effective detection of the air spring piston arm, reduce the labor intensity of workers, and improve the qualified rate of the air spring piston arm. It has the advantages of simple structure, strong versatility, good assembly, low manufacturing and maintenance costs, and high reliability. It has great market value and deserves wide promotion and application.
[0027] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A tool for testing the air tightness of an air spring piston arm, characterized by: The invention comprises a base (1) and a test bench (2) arranged on the base (1); a sleeve (4) for sealingly connecting with one end of a piston arm (3) is arranged on the test bench (2); the other end of the piston arm (3) cooperates with a limiting column (5) for limiting; the outer side of the sleeve (4) is sealed and connected to a vent pipe (6); and a positioning pin (7) is arranged between the vent pipe (6) and the test bench (2).
2. The air tightness testing tool for an air spring piston arm according to claim 1, characterized in that: The limiting column (5) is arranged on the base (1) and is located on one side of the test bench (2).
3. The tool for testing the air tightness of an air spring piston arm according to claim 1, characterized in that: One end of the piston arm (3) is interference-fitted with the inner wall of the sleeve (4) through an elastic ring (8), and the other end is clamped and fitted with a clamping block (10) on the limiting column (5) through a clamping groove (9).
4. The tool for testing the air tightness of an air spring piston arm according to claim 1, characterized in that: The test bench (2) has a horizontally arranged stepped through hole (11), the sleeve (4) and the vent pipe (6) are both movably installed in the stepped through hole (11), and the sleeve (4), the vent pipe (6) and the stepped through hole (11) are coaxially arranged.
5. The tool for testing the air tightness of an air spring piston arm according to claim 4, characterized in that: One end of the sleeve (4) is sealed and sleeved with the vent pipe (6), and the other end is positionally engaged with the stepped through hole (11) via a stepped surface.
6. The tool for testing the air tightness of an air spring piston arm according to claim 1, characterized in that: A sealing ring (12) is provided between the sleeve (4) and the vent pipe (6), and the outer wall of the sleeve (4) has a sealing groove (13) that matches the sealing ring (12).
7. The tool for testing the air tightness of an air spring piston arm according to claim 1, characterized in that: The test bench (2) is provided with a vertically arranged latch hole (14), and the positioning latch (7) is movably installed in the latch hole (14).
8. The tool for testing the air tightness of an air spring piston arm according to claim 1, characterized in that: The positioning latch (7) is perpendicular to the vent pipe (6), and the vent pipe (6) is provided with a locking groove (15) that matches the positioning latch (7).