Air spring buffer block testing device

Abstract

The utility model discloses an air spring buffer block testing device which comprises an installation box, an air tap interface is arranged on the installation box, and an installation seat used for installing a buffer block is arranged on the inner side of an upper top cover of the installation box. The testing device further comprises a fixing rod which is arranged on the mounting base in a penetrating mode and fixedly connected with the upper top cover of the mounting box, a connecting rod which is arranged on the lower bottom plate of the mounting box in a penetrating mode and a quick connecting piece which is used for connecting the buffer block and the connecting rod, and the quick connecting piece can be a rope connected between the buffer block and the connecting rod. According to the utility model, the pulling-out force of the buffer block can be actively tested through the connecting rod, and the pulling-out force variation of the buffer block in a high-pressure state can be observed in real time through the transparent cylinder by inflating and deflating the interior of the testing device, and the installation box does not need to be opened for many times to observe whether the buffer block displaces or falls off.

Description

Technical Field

[0001] This utility model belongs to the field of air spring production equipment, and specifically relates to an air spring buffer block testing device. Background Technology

[0002] Currently, air suspension is being used more and more widely, with many existing vehicle chassis being upgraded and modified to use air springs. The load-bearing capacity of air springs can be adjusted by regulating the air pressure to meet different load requirements. At the same time, air springs are used in conjunction with shock absorbers, which provide a certain amount of damping to attenuate vibrations. However, during wheel bounce, in order to avoid structural collisions, a damping and limiting element is also needed, namely the aforementioned buffer block.

[0003] Buffer blocks are typically made of porous polyurethane material. In actual use, the air pressure inside the air spring changes constantly with the wheel's movement, and the buffer block is also subjected to high-frequency impacts. This makes the buffer block prone to detachment during use, affecting its service life and generating noise. Patent publication number CN218067006U discloses a buffer block testing device, but it cannot actively test the pull-out force of the buffer block. Summary of the Invention

[0004] The purpose of this invention is to provide an air spring buffer block testing device that can actively test the pull-out force of the buffer block.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an air spring buffer block testing device, which includes a mounting box, an air nozzle interface on the mounting box, a mounting seat for mounting the buffer block on the inner side of the top cover of the mounting box, and the testing device further includes a fixing rod passing through the mounting seat and fixedly connected to the top cover of the mounting box, a connecting rod passing through the bottom plate of the mounting box, and a quick connector for connecting the buffer block and the connecting rod. The quick connector may be a rope connecting the buffer block and the connecting rod.

[0006] In another embodiment, the mounting box includes an upper mounting plate, a lower mounting plate, a fixing screw connecting the upper mounting plate and the lower mounting plate, and a cylinder sealingly connected between the upper mounting plate and the lower mounting plate.

[0007] In another embodiment, the air nozzle interface is located on the upper mounting plate.

[0008] In another embodiment, the cylinder is made of a transparent material, such as tempered glass or polysulfone.

[0009] In another embodiment, an annular and downwardly protruding upper mounting ring is formed on the lower end face of the upper mounting plate, and an annular upper mounting groove is formed on the lower end face of the upper mounting plate inside the upper mounting ring, and the upper end of the cylinder is inserted into the upper mounting groove.

[0010] In another embodiment, the inner wall of the upper mounting ring is provided with a plurality of upper sealing grooves extending circumferentially thereon, and the mounting box further includes an upper sealing ring disposed in the upper sealing groove and located between the inner wall of the upper mounting ring and the outer circumferential surface of the cylinder.

[0011] In another embodiment, an annular and upwardly protruding lower mounting ring is formed on the upper end surface of the lower mounting plate, and an annular lower mounting groove is formed on the upper end surface of the lower mounting plate inside the lower mounting ring, and the lower end of the cylinder is inserted into the lower mounting groove.

[0012] In another embodiment, the inner wall of the lower mounting ring is provided with a plurality of lower sealing grooves extending circumferentially thereon, and the mounting box further includes a lower sealing ring disposed in the lower sealing groove and located between the inner wall of the lower mounting ring and the outer circumferential surface of the cylinder.

[0013] In another embodiment, a bottom sealing groove is provided on the mating surface of the lower mounting plate and the connecting rod, and a bottom sealing ring is provided in the bottom sealing groove and fitted on the connecting rod.

[0014] In another embodiment, a positioning groove with a wide belly and a narrow opening, matching the end of the buffer block, is provided on the lower end face of the mounting base. The buffer block is disposed in the positioning groove and sleeved on the fixing rod. A stepped mounting hole is provided on the top of the mounting base. The upper end of the fixing rod is stepped and matches the mounting hole. A threaded section is formed on its upper end face. The threaded section passes through the mounting hole and is threadedly connected to the upper mounting plate. Its upper end face presses against the top of the mounting base.

[0015] The beneficial effects of this utility model are as follows: This utility model can actively test the pull-out force of the buffer block through the connecting rod, and can also test the change of pull-out force of the buffer block under high pressure by inflating and deflating the inside of the testing device and observing the change of pull-out force of the buffer block in real time through the transparent cylinder, without having to open the installation box multiple times to observe whether the buffer block has shifted or fallen off. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0019] like Figure 1-2 As shown, the air spring buffer block testing device includes a mounting box, a mounting base 10, a fixing rod 8, a connecting rod 7, and quick-connect fittings. The mounting box is equipped with an air nozzle interface 23 for mounting the buffer block 9, which is located inside the top cover of the mounting box. The fixing rod 8 passes through the mounting base 10 and is fixedly connected to the top cover of the mounting box. The connecting rod 7 passes through the bottom plate of the mounting box. The quick-connect fittings are used to connect the buffer block 9 and the connecting rod 7. The quick-connect fittings can be ropes connecting the buffer block 9 and the connecting rod 7. The connecting rod 7 can be connected to a tension testing device to test the pull-out force of the buffer block. Moreover, without the aid of an air pump, the air pressure inside the mounting box can be adjusted by the position of the connecting rod 7 in the mounting box to achieve the pull-out force test of the buffer block under different air pressures.

[0020] Specifically, the mounting box includes an upper mounting plate 2, a lower mounting plate 5, a fixing screw 1 connecting the upper mounting plate 2 and the lower mounting plate 5, and a cylinder 4 sealingly connected between the upper mounting plate 2 and the lower mounting plate 5. An air nozzle interface 23 is located on the upper mounting plate 2.

[0021] To facilitate real-time observation of the buffer pad's condition, the cylinder 4 is made of a transparent material, such as tempered glass or polysulfone.

[0022] To improve the sealing performance of the mounting box, an annular and downwardly protruding upper mounting ring 21 is formed on the lower end face of the upper mounting plate 2. An annular upper mounting groove 24 is formed on the lower end face of the upper mounting plate 2 inside the upper mounting ring 21. The upper end of the cylinder 4 is inserted into the upper mounting groove 24. Several upper sealing grooves 22 extending circumferentially are formed on the inner side wall of the upper mounting ring 21. The mounting box also includes an upper sealing ring 31 located in the upper sealing groove 22 and between the inner side wall of the upper mounting ring 21 and the outer circumferential surface of the cylinder 4. An annular and upwardly protruding lower mounting ring 51 is formed on the upper end face of the lower mounting plate 5. An annular lower mounting groove 53 is formed on the upper end face of the lower mounting plate 5 inside the lower mounting ring 51. The lower end of the cylinder 4 is inserted into the lower mounting groove 53. The inner wall of the lower mounting ring 51 is provided with several lower sealing grooves 52 extending circumferentially therefrom. The mounting box also includes a lower sealing ring 32 located in the lower sealing grooves 52 and between the inner wall of the lower mounting ring 51 and the outer circumferential surface of the cylinder 4. A bottom sealing groove 24 is provided on the contact surface between the lower mounting plate 5 and the connecting rod 7, and a bottom sealing ring 6 is provided in the bottom sealing groove 24 and fitted on the connecting rod 7.

[0023] The mounting base 10 has a positioning groove 101 with a large belly and a small opening that matches the end of the buffer block 9 on its lower end surface. The buffer block 9 is located in the positioning groove 101 and is sleeved on the fixing rod 8. The top of the mounting base 10 has a stepped mounting hole. The upper end of the fixing rod 8 is stepped and matches the mounting hole. A threaded section is formed on its upper end surface. The threaded section passes through the mounting hole and is threadedly connected to the upper mounting plate 2. Its upper end surface presses against the top of the mounting base 10.

[0024] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. An air spring buffer block testing device, comprising a mounting box, wherein the mounting box is provided with an air nozzle interface, and the inner side of the top cover of the mounting box is provided with a mounting base for mounting the buffer block, characterized in that: The testing device also includes a fixing rod that passes through the mounting base and is fixedly connected to the top cover of the mounting box, a connecting rod that passes through the bottom plate of the mounting box, and a quick-connect fitting for connecting the buffer block and the connecting rod.

2. The air spring buffer block testing device according to claim 1, characterized in that: The mounting box includes an upper mounting plate, a lower mounting plate, a fixing screw connecting the upper mounting plate and the lower mounting plate, and a cylindrical body sealingly connected between the upper mounting plate and the lower mounting plate.

3. The air spring buffer block testing device according to claim 2, characterized in that: The air nozzle interface is located on the upper mounting plate.

4. The air spring buffer block testing device according to claim 2, characterized in that: The cylinder is made of a transparent material.

5. The air spring buffer block testing device according to claim 2, characterized in that: An annular and downwardly protruding upper mounting ring is formed on the lower end surface of the upper mounting plate, and an annular upper mounting groove is formed on the lower end surface of the upper mounting plate inside the upper mounting ring. The upper end of the cylinder is inserted into the upper mounting groove.

6. The air spring buffer block testing device according to claim 5, characterized in that: The upper mounting ring has several upper sealing grooves extending circumferentially on its inner sidewall. The mounting box also includes an upper sealing ring disposed in the upper sealing groove and located between the inner sidewall of the upper mounting ring and the outer circumferential surface of the cylinder.

7. The air spring buffer block testing device according to claim 2, characterized in that: An annular and upwardly protruding lower mounting ring is formed on the upper end surface of the lower mounting plate, and an annular lower mounting groove is formed on the upper end surface of the lower mounting plate inside the lower mounting ring. The lower end of the cylinder is inserted into the lower mounting groove.

8. The air spring buffer block testing device according to claim 7, characterized in that: The lower mounting ring has several lower sealing grooves extending circumferentially on its inner sidewall. The mounting box also includes a lower sealing ring disposed in the lower sealing groove and located between the inner sidewall of the lower mounting ring and the outer circumferential surface of the cylinder.

9. The air spring buffer block testing device according to claim 2, characterized in that: The lower mounting plate and the connecting rod have a bottom sealing groove on their mating surfaces, and a bottom sealing ring is fitted onto the connecting rod inside the bottom sealing groove.

10. The air spring buffer block testing device according to claim 2, characterized in that: The mounting base has a positioning groove on its lower end face that is wider at the bottom and narrower at the top, matching the end of the buffer block. The buffer block is located in the positioning groove and fitted onto the fixing rod. The mounting base has a stepped mounting hole on its top. The upper end of the fixing rod is stepped, matching the mounting hole, and has a threaded section on its upper end face. The threaded section passes through the mounting hole and is threadedly connected to the upper mounting plate, with its upper end face pressing against the top of the mounting base.

Images