Pre-inflation tool for assisting follow-up bridge bearing air bag installation

Abstract

The utility model relates to a pre-inflation tool for assisting follow-up bridge bearing air bag installation, which comprises an inflation structure and an unloading valve, the inflation structure comprises an inflation tube and a connecting tube, one end of the inflation tube is used for being connected with an air outlet of an inflation device, the other end of the inflation tube is connected with one end of the connecting tube, and the unloading valve is connected with the inflation tube. The other end of the connecting pipe is used for being connected with an air inlet of a bearing air bag, and the connecting pipe is flexibly arranged. And the unloading valve is mounted on the gas filling pipe. The inflating pipe and the connecting pipe are connected with the inflating device and the bearing air bag respectively, the bearing air bag is inflated, so that the height of the bearing air bag is increased, a gap between the bearing air bag and a support hole is reduced, the unloading valve is appropriately deflated to adjust the height of the bearing air bag, the operation efficiency of dismounting and mounting the bearing air bag is improved, manpower is reduced, and the working efficiency is improved. The safety quality risk is reduced; the connecting pipe can be bent at will, and operation is convenient. Therefore, the universality is high, and the practicability is high.

Description

Technical Field

[0001] The utility model relates to the field of vehicle assembly, and particularly relates to a pre-inflation tool for assisting the installation of a load-bearing airbag of a trailing axle. Background Art

[0002] At present, when assembling and repairing the load-bearing airbag of the trailing axle in each automobile manufacturer and automobile repair shop, since the airbag is in a contracted state, the distance between the airbag bolt and the support hole on the vehicle frame is relatively large. When installing, it is necessary to stretch the airbag (or forcibly press the axle body with external force) to make the bolt pass through the support hole. There is an elastic element in the airbag and it is not easy to stretch, resulting in difficulty in connecting the airbag to the support, which is time-consuming and laborious. Thus, the working efficiency is low, the assembly cost and labor intensity are increased, and there are potential safety hazards. Content of the Utility Model

[0003] Based on the above description, the utility model provides a pre-inflation tool for assisting the installation of a load-bearing airbag of a trailing axle to solve the problems of laborious assembly, low efficiency, and potential safety hazards between the existing airbag and the support.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A pre-inflation tool for assisting the installation of a load-bearing airbag of a trailing axle, comprising:

[0006] An inflation structure, including an inflation pipe and a connecting pipe. One end of the inflation pipe is used to connect with the air outlet of an inflation device, the other end of the inflation pipe is connected with one end of the connecting pipe, the other end of the connecting pipe is used to connect with the air inlet of the load-bearing airbag, and the connecting pipe is flexibly arranged; and,

[0007] A relief valve, installed on the inflation pipe.

[0008] On the basis of the above technical solution, the utility model can also be improved as follows:

[0009] Further, the inflation structure further includes a pressure limiting valve provided on the inflation pipe.

[0010] Further, the inflation pipe includes:

[0011] A joint, one end of the joint is used to connect with the air inlet of the inflation device; and,

[0012] An inflation section, one end of the inflation section is connected with the end of the connecting pipe;

[0013] The inlet and outlet of the pressure limiting valve are respectively connected with the other end of the joint and the other end of the inflation section;

[0014] The relief valve is provided on the inflation section.

[0015] Further, threaded holes are formed in the inlet and outlet of the pressure limiting valve;

[0016] Threaded sleeves are formed at the other ends of the joint end and the inflation section, and are screwed into the corresponding threaded holes.

[0017] Further, the joint is arranged as a pneumatic quick-connect joint.

[0018] Further, the pneumatic quick-connect joint includes:

[0019] A joint body, which is provided with a mounting hole in the same extending direction as the inflation pipe. The mounting hole includes a connected mounting section and a communicating section. The shaft diameter of the communicating section is smaller than that of the mounting section, and the communicating section is connected to the inlet of the pressure limiting valve; and,

[0020] A limiting component, including a sealing ring, a limiting ring, a circlip and a release ring which are sequentially installed in the mounting section from the communicating section to the mounting section. The release ring is installed at the end of the mounting section and can move radially along the mounting section.

[0021] Further, a plurality of annular grooves are recessed on the periphery of the connecting pipe at intervals along its length direction, and the two groove side walls of each annular groove can be arranged to move away from or close to each other.

[0022] Further, the connecting pipe is arranged as a nylon pipe.

[0023] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0024] One end of the inflation pipe is connected to the air outlet of the inflation device, and the other end of the inflation pipe is connected to one end of the connecting pipe. The other end of the connecting pipe is used to be connected to the air inlet of the load-bearing airbag; thus, the inflation device fills the load-bearing airbag with air from its air outlet through the inflation pipe and the connecting pipe, so that the load-bearing airbag changes from a contracted state to an extended state, the height of the load-bearing airbag increases, and the gap between the bolts of the load-bearing airbag and the support holes decreases, facilitating the assembly of the load-bearing airbag. And the air in the load-bearing airbag can be discharged by adjusting the unloading valve, so as to be able to deflate appropriately according to the installation requirements and adjust the height of the load-bearing airbag. In addition, the connecting pipe is flexibly arranged, so that the connecting pipe can be bent arbitrarily to avoid interference with the axle. In this way, the structure is simple, the manufacturing is convenient, the use is convenient, the operation efficiency during the connection or disassembly of the transmission shaft can be improved with the highest efficiency, the manual operation intensity can be reduced, the safety and quality risks can be reduced, and it can be used for vehicle models with different width frames, having strong versatility and practicability. Description of the Drawings

[0025] Figure 1Schematic structural diagram of a pre-inflation tool for assisting in the installation of a load-bearing airbag of a trailing axle according to an embodiment of the present utility model;

[0026] Figure 2 For Figure 1 explosion structural diagram;

[0027] Figure 3 Cross-sectional view schematic diagram of a pneumatic quick-connect plug in an embodiment of the present utility model;

[0028] Figure 4 Schematic diagram of the use state of a pre-inflation tool for assisting in the installation of a load-bearing airbag of a trailing axle provided by an embodiment of the present utility model.

[0029] In the drawings, the list of components represented by each reference numeral is as follows:

[0030] 1. Inflation structure; 11. Inflation pipe; 111. Connector; 1110. Pneumatic quick-connect plug; 1111. Connector body; 1112. Installation hole; 11121. Installation section; 11122. Communication section; 1113. Sealing ring; 1114. Limiting ring; 1115. Snap ring; 1116. Release ring; 112. Inflation section; 12. Connecting pipe; 13. Pressure-limiting valve; 131. Inlet; 132. Outlet; 2. Relief valve; 3. Threaded sleeve; a. Load-bearing airbag; a1. Air inlet; b. Inflation device. Detailed implementation manners

[0031] For the convenience of understanding the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0033] It will be appreciated that spatial relationship terms such as "under", "below", "beneath", "underneath", "above", "over" etc. may be used herein to describe the relationship of one element or feature shown in the figures with other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the drawings is flipped, an element or feature described as "under other elements" or "beneath them" or "under it" will be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "beneath" can include both upward and downward orientations. In addition, the device may also have other orientations (such as, rotated 90 degrees or other orientations), and the spatial descriptors used herein are to be interpreted accordingly.

[0034] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprises / include" or "has" etc. specify the presence of the stated features, integers, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts or combinations thereof.

[0035] Referring to Figure 1 、 Figure 2 and Figure 4 , the present utility model provides a pre-inflation tool for assisting in the installation of a load-bearing airbag of a follow-up axle, comprising:

[0036] An inflation structure 1, comprising an inflation pipe 11 and a connecting pipe 12. One end of the inflation pipe 11 is used for connecting with the air outlet of an inflation device b, the other end of the inflation pipe 11 is connected with one end of the connecting pipe 12, the other end of the connecting pipe 12 is used for connecting with the air inlet a1 of the load-bearing airbag a, and the connecting pipe 12 is flexibly arranged;

[0037] A relief valve 2, installed on the inflation pipe 11.

[0038] One end of the inflation tube 11 is connected to the air outlet of the inflation device b, and the other end of the inflation tube 11 is connected to one end of the connecting tube 12, and the other end of the connecting tube 12 is used to connect to the load-bearing airbag a; thus, the inflation device b fills the air from its air outlet through the inflation tube 11 and the connecting tube 12 into the load-bearing airbag a, so that the load-bearing airbag a changes from a contracted state to an extended state, the height of the load-bearing airbag a increases, and the gap between the bolts of the load-bearing airbag a and the bracket hole decreases, which facilitates the assembly of the load-bearing airbag a. And the air in the load-bearing airbag a can be discharged by adjusting the unloading valve 2, so that it can be properly deflated according to the installation requirements and the height of the load-bearing airbag a can be adjusted. In addition, the connecting tube 12 is flexibly set, so that the connecting tube 12 can be bent at will to avoid interference with the axle. In this way, the structure is simple, the manufacturing is convenient, and the use is easy. It can maximize the efficiency of the operation when the transmission shaft is connected or disassembled, reduce the intensity of manual work, reduce safety and quality risks, and can be used for models with frames of different widths. It has strong versatility and practicality.

[0039] It should be noted that the unloading valve 2 can be a manually deflated air pressure valve or an automatically deflated air pressure valve under a specific air pressure, so that when the load-bearing airbag a is filled with air, the air can be deflated appropriately according to the installation requirements, the height of the load-bearing airbag a can be adjusted, and the bracket hole can be installed. The operability is strong and the operation is simple and convenient.

[0040] Specifically, in this embodiment, refer to Figure 1 and Figure 2 The inflatable structure 1 also includes a pressure-limiting valve 13 arranged on the inflatable tube 11. The pressure-limiting valve 13 can be adjusted according to the air pressure values ​​required by the load-bearing airbag a to adapt to more models of load-bearing airbags a. The pressure-limiting valve 13 can also be used as a switch to open or block the connection between the inflatable tube 11 and the connecting tube 12.

[0041] More specifically, in this embodiment, referring to Figure 1 and Figure 2 The inflation tube 11 includes a joint 111 and an inflation section 112. One end of the joint 111 is used to connect with the air outlet of the inflation device b; one end of the inflation section 112 is connected with the end of the connecting tube 12; the inlet 131 and the outlet 132 of the pressure limiting valve 13 are respectively connected with the other end of the joint 111 and the other end of the inflation section 112; the unloading valve 2 is arranged in the inflation section 112. Thus, the air passes through the joint 111, the pressure limiting valve 13, the inflation section 112 and the connecting tube 12 from the air outlet of the inflation device b to the load-bearing airbag a in sequence. The pressure limiting valve 13 ensures that the pressure of the gas filled into the load-bearing airbag is stable and ensures smooth air flow; thus, the structure is simple, the installation is convenient, and the safety factor is high.

[0042] It should be noted that the pressure limiting valve 13 can be set as a regulating valve that controls the inflation flow rate by controlling the opening and closing size of the valve, or can also be set as a pressure valve with adjustable air pressure.

[0043] In this embodiment, continue to refer to Figure 1 and Figure 2 , threaded holes are formed in the inlet 131 and the outlet 132 of the pressure limiting valve 13; threaded sleeves 3 that are screwed into the corresponding threaded holes are formed at the other ends of the joint 111 end and the other end of the inflation section 112. This makes the installation and disassembly of the joint 111 and the pressure limiting valve 13, as well as the inflation section 112 and the pressure limiting valve 13, convenient; and after any one of the joint 111, the pressure limiting valve 13, and the inflation section 112 is damaged, it can be directly replaced, reducing cost consumption. In this way, the assembly is convenient, the structure is simple, the cost is low, and it can be disassembled and separately stored, reducing the occupied space.

[0044] In order to facilitate the installation and disassembly of the joint 111 and the air inlet a1 of the bearing airbag a, in the embodiment, refer to Figure 2 and Figure 3 , the joint 111 is set as a pneumatic quick-connect joint 1110, so as to enable quick connection and quick disassembly, and the connection is firm.

[0045] Specifically, in this embodiment, continue to refer to Figure 2 and Figure 3 , the pneumatic quick-connect joint 1110 includes a joint body 1111 and a limiting component. The joint body 1111 is provided with an installation hole 1112 that is the same as the extending direction of the inflation pipe 11. The installation hole 1112 includes a connected installation section 11121 and a communication section 11122. The shaft diameter of the communication section 11122 is smaller than that of the installation section 11121, and the communication section 11122 is connected to the inlet 131 of the pressure limiting valve 13; the limiting component includes a sealing ring 1113, a limiting ring 1114, a snap ring 1115, and a release ring 1116 that are sequentially installed in the installation section 11121 from the communication section 11122 to the installation section 11121. The release ring 1116 is installed at the end of the installation section 11121 and can move axially along the installation section 11121. The diameter of the inner hole of the release ring 1116 is the same as the aperture of the communication section 11122.

[0046] Wherein, an annular connection surface is formed at the connection between the installation section 11121 and the communication section 11122. The sealing ring 1113 is received on the annular connection surface, the limiting ring 1114 is pressed on the sealing ring 1113, and the snap ring 1115 is arranged on the limiting ring 1114. The installation section 11121 of the pneumatic quick-connect socket is directly sleeved around the air inlet a1 of the air bag a. At this time, the snap ring 1115 catches the periphery of the air outlet of the inflation device b, realizing the quick installation of the pneumatic quick-connect joint 1110 and the inflation device b, and the connection is stable. When the release ring 1116 moves towards the inside of the installation section 11121, the release ring 1116 abuts against the snap ring 1115 and moves towards the inside of the limiting ring. The snap ring 1115 deforms to release the locking of the air outlet of the inflation device b, and then the pneumatic quick-connect joint 1110 is pulled out radially along the installation section 11121 away from the air outlet of the inflation device b, realizing the quick disassembly of the pneumatic quick-connect joint 1110 and the inflation device b. In this way, the structure is simple and the operation is convenient.

[0047] In one embodiment, the connecting pipe 12 is made of nylon pipe. In this way, it has a low price, stable properties, and is strong and durable.

[0048] In another embodiment, the connecting pipe 12 can be a corrugated pipe. A plurality of annular grooves 121 are recessed on the periphery of the connecting pipe 12 at intervals along its length direction. The opposite two groove side walls of each annular groove 121 can be arranged to move away from each other or close to each other, so that the length of the connecting pipe 12 can be telescopic.

[0049] The above two technical features can be set alternatively or simultaneously. The effect of setting them simultaneously is better. In this embodiment, the connecting pipe 12 is a corrugated nylon pipe, so that the length of the connecting pipe 12 can be telescopic, which is convenient for the operator to use, and has stable properties and is strong and durable.

[0050] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pre-inflation tool for assisting the installation of a tag-along bridge airbag, characterized in that: include: An inflatable structure, comprising an inflatable tube and a connecting tube, wherein one end of the inflatable tube is connected to the air outlet of the inflatable device, the other end of the inflatable tube is connected to one end of the connecting tube, the other end of the connecting tube is connected to the air inlet of the load-bearing airbag, and the connecting tube is flexibly arranged; and A relief valve is installed on the inflation pipe.

2. The pre-inflation tool for assisting the installation of the tag axle bearing airbag according to claim 1, characterized in that: The inflatable structure further includes a pressure limiting valve arranged on the inflatable tube.

3. The pre-inflation tool for assisting the installation of the tag axle bearing airbag according to claim 2, characterized in that: The inflatable tube comprises: a connector, one end of which is used to connect to the air inlet of the inflator; and An inflation section, one end of which is connected to the end of the connecting pipe; The inlet and outlet of the pressure limiting valve are respectively connected to the other end of the joint and the other end of the inflation section; The unloading valve is arranged at the inflation section.

4. The pre-inflation tool for assisting the installation of the tag axle bearing airbag according to claim 3, characterized in that: Threaded holes are formed in the inlet and outlet of the pressure limiting valve; The other end of the joint end and the other end of the inflatable section are both formed with threaded sleeves that are threadedly connected to the corresponding threaded holes.

5. The pre-inflation tool for assisting installation of a tag axle bearing airbag according to claim 3, characterized in that: The connector is configured as a pneumatic quick-connect connector.

6. The pre-inflation tool for assisting the installation of the tag axle bearing airbag according to claim 5, characterized in that: The pneumatic quick-connect connector comprises: The joint body is provided with a mounting hole in the same extension direction as the inflation tube, the mounting hole comprises a mounting section and a connecting section connected to each other, the axial diameter of the connecting section is smaller than that of the mounting section, and the connecting section is connected to the inlet of the pressure limiting valve; and, The limiting assembly comprises a sealing ring, a limiting ring, a retaining ring and a release ring which are sequentially installed on the installation section from the connecting section to the installation section. The release ring is installed at the end of the installation section and can move radially along the installation section.

7. The pre-inflation tool for assisting the installation of the tag axle bearing airbag according to claim 1, characterized in that: The outer periphery of the connecting pipe is concavely provided with a plurality of annular grooves spaced apart and distributed along the length direction thereof, and the two opposite groove side walls of each annular groove can be arranged away from each other or close to each other.

8. The pre-inflation tool for assisting installation of a tag axle bearing airbag according to claim 1, characterized in that: The connecting tube is configured as a nylon tube.

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