Air spring durability testing device

Abstract

The utility model discloses an air spring durability testing device, which comprises a first base, a first mounting rack arranged on the first base, a first mounting frame mounted on the first mounting rack, a first telescopic rod, a first telescopic part used for driving the first telescopic rod to act, and a second base used for mounting the first telescopic part, the first telescopic rod penetrates through the first through hole, at least part of the first telescopic rod is located in the first mounting frame, and the lower end of the first telescopic rod is rotationally connected to the second base; a gap for the first telescopic part to swing is formed between the bottom of the first telescopic part and the second base located below the first telescopic part, a gap for the first telescopic rod to swing is formed between the first telescopic rod and the first through hole, when the first telescopic part stretches out and draws back, the first telescopic part swings due to deformation of the air spring, and then the working condition of the air spring in the driving process is simulated. Therefore, axial tension, compression and radial distortion tests of the air spring are realized.

Description

Technical Field

[0001] This utility model belongs to the field of air spring accessories, and specifically relates to an air spring durability testing device. Background Technology

[0002] Air spring durability testing structures are mainly used to simulate and evaluate the durability and performance stability of air springs under actual use conditions. Current testing devices can only complete the durability test of one air spring at a time, resulting in low testing efficiency. Moreover, most testing devices can only perform telescopic movement tests along the axial direction of the air spring. A small number of testing devices can achieve torsional testing, such as the patent application with publication number CN118243415A, which achieves telescopic and torsional testing of air springs through a complex linkage mechanism connected to the upper and lower ends of the air spring. However, for some air springs without an intermediate telescopic rod, the linkage mechanism structure is complicated and extremely inconvenient to install. Summary of the Invention

[0003] The purpose of this invention is to provide an air spring durability testing device that is easy to assemble and disassemble and has high testing efficiency.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an air spring durability testing device, comprising a first base, a first mounting bracket disposed on the first base, and a first mounting frame mounted on the first mounting bracket. The first mounting frame has a first through hole. The testing device further comprises a composite drive mechanism, which includes a first telescopic rod, a first telescopic part for driving the first telescopic rod, and a second base for mounting the first telescopic part. The first telescopic rod passes through the first through hole and at least partly lies within the first mounting frame. A first mounting position for mounting an air spring is formed between the upper end of the first telescopic rod and the top inner side of the first mounting frame. The lower end of the first telescopic part is rotatably connected to the second base with the pivot being a first pivot. There is a gap between the bottom of the first telescopic part and the second base below it for the first telescopic part to swing, and there is a gap between the first telescopic rod and the first through hole for the first telescopic rod to swing. When the first telescopic part extends or retracts, it will swing due to the deformation of the air spring, thereby simulating the working conditions of the air spring during driving, thus realizing the axial tension, compression, and radial torsion tests of the air spring.

[0005] In another embodiment, each of the composite drive mechanisms includes an adjustable third base mounted on the first base, a first locking mechanism for fixing the third base to the first base or unlocking it from the first base, and a second base mounted on the third base to facilitate adjustment of the position of the composite drive mechanism on the first base, thereby making the distribution of multiple composite drive mechanisms more reasonable.

[0006] In another embodiment, the first locking mechanism includes a plurality of parallel first mounting slots formed on the upper surface of the first base and a first bolt assembly passing through the third base. The first mounting slots are wide at the top and narrow at the bottom. The first bolt assembly includes a first locking bolt with the head disposed in the first mounting slot and the stud passing through the third base, and a first locking nut threadedly connected to the first locking bolt and located above the third base. The arrangement of multiple first mounting slots can further reduce the installation difficulty of the composite drive mechanism and can be applied to different applications.

[0007] In another embodiment, the first through hole is an oblong hole, and the first telescopic rod swings within the first through hole.

[0008] In another embodiment, the first telescopic part is an electric push rod.

[0009] In another embodiment, a second bolt assembly is provided on the top inner side of the first mounting frame, and an air spring is connected between the second bolt assembly and the first telescopic rod.

[0010] In another embodiment, the testing device further includes a second mounting bracket disposed on the first base and a second mounting frame mounted on the second mounting bracket. The second mounting frame has a second through hole. The testing device also includes a single drive mechanism, which includes a second telescopic rod matching the second through hole, a second telescopic part for driving the second telescopic rod, and a fourth base for mounting the second telescopic part. The second telescopic rod passes through the second through hole and at least part of it is located within the second mounting frame. A second mounting position for mounting an air spring is formed between the upper end of the second telescopic rod and the top inner side of the second mounting frame. When the second telescopic part extends or retracts, the second through hole guides the second telescopic rod, causing the second telescopic rod to move in the vertical direction, thereby realizing the axial tension and compression test of the air spring.

[0011] In another embodiment, the second telescopic part is an electric push rod.

[0012] In another embodiment, a third bolt assembly is provided on the top inner side of the second mounting frame, and an air spring is connected between the third bolt assembly and the second telescopic rod.

[0013] In another embodiment, the ratio of the number of single drive mechanisms to the number of composite drive mechanisms is 1:2 to 1:4.

[0014] The beneficial effects of this utility model are as follows: This device enables simultaneous testing of multiple air springs through multiple composite drive mechanisms installed on the first base, thereby improving testing efficiency; and the composite drive mechanism realizes telescopic torsion testing, while the single drive mechanism realizes telescopic testing, so one device can realize testing in different states. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A magnified view at point E in the middle;

[0017] Figure 3 for Figure 2 Enlarged view at point F;

[0018] Figure 4 A schematic diagram of the structure of this utility model with an air spring installed. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0020] like Figure 1-4 As shown, the air spring durability testing device includes a first base 1, a first mounting bracket 2 mounted on the first base 1, a first mounting frame 3 mounted on the first mounting bracket 2, a second mounting bracket 4 mounted on the first base 1, a second mounting frame 5 mounted on the second mounting bracket 4, a single drive mechanism D, and a compound drive mechanism C. The first mounting frame 3 has a first through hole 6, and the second mounting frame 5 has a second through hole 7.

[0021] The composite drive mechanism C includes a first telescopic rod 8, a first telescopic part 9 for driving the first telescopic rod 8, and a second base 10 for mounting the first telescopic part 9. The first telescopic rod 8 passes through the first through hole 6 and at least part of it is located within the first mounting frame 3. A first mounting position A for mounting the air spring 0 is formed between the upper end of the first telescopic rod 8 and the top inner side of the first mounting frame 3. The lower end of the first telescopic part 9 is rotatably connected to the second base 10 and the pivot is the first pivot 11. There is a gap between the bottom of the first telescopic part 9 and the second base 10 below it for the first telescopic part 9 to swing, and there is a gap between the first telescopic rod 8 and the first through hole 6 for the first telescopic rod 8 to swing. In this embodiment, the first through hole 6 is an oblong hole. The first telescopic rod 8 swings within the first through hole 6. When the first telescopic part 9 extends or retracts, it will swing due to the deformation of the air spring 0, thereby simulating the working condition of the air spring 0 during driving, and thus realizing the axial tension, compression, and radial torsion tests of the air spring 0.

[0022] To facilitate the adjustment of the position of the composite drive mechanism C on the first base 1 and to make the distribution of multiple composite drive mechanisms C more reasonable, each composite drive mechanism C includes an adjustable third base 12 mounted on the first base 1, a first locking mechanism 13 for fixing the third base 12 to or unlocking it from the first base 1, and a second base 10 mounted on the third base 12.

[0023] The first locking mechanism 13 includes several parallel first mounting slots 14 formed on the upper surface of the first base 1, and a first bolt assembly 15 passing through the third base 12. The first mounting slots 14 are wide at the top and narrow at the bottom. The first bolt assembly 15 includes a first locking bolt 16 with the head inside the first mounting slot 14 and the stud passing through the third base 12, and a first locking nut 17 threadedly connected to the first locking bolt 16 and located above the third base 12. The arrangement of multiple first mounting slots 14 can further reduce the installation difficulty of the composite drive mechanism C and can be applied to different applications.

[0024] The top inner side of the first mounting frame 3 is provided with a first connector 28 and a second bolt assembly 18 provided on the first connector 28 for fixing the upper end of the air spring 0 and the first connector 28. The air spring 0 is connected between the second bolt assembly 18 and the first telescopic rod 8.

[0025] The single drive mechanism D includes a second telescopic rod 19 that matches the second through hole 7, a second telescopic part 20 for driving the second telescopic rod 19, and a fourth base 21 for mounting the second telescopic part 20. The second telescopic rod 19 passes through the second through hole 7 and at least part of it is located within the second mounting frame 5. A second mounting position B for mounting the air spring 0 is formed between the upper end of the second telescopic rod 19 and the top inner side of the second mounting frame 5. When the second telescopic part 20 extends or retracts, the second through hole 7 guides the second telescopic rod 19, causing it to move vertically, thereby enabling axial tensile and compression testing of the air spring 0. The top inner side of the second mounting frame 5 is provided with a second connector 29 and a third bolt assembly 22 provided on the second connector 29 for fixing the upper end of the air spring 0 and the second connector 29. The air spring 0 is connected between the third bolt assembly 22 and the second telescopic rod 19. The ratio of the number of single drive mechanisms D to composite drive mechanisms C is 1:2 to 1:4. In order to facilitate the adjustment of the position of the single drive mechanism D on the first base 1 and make the distribution of multiple single drive mechanisms D more reasonable, each single drive mechanism D includes a second locking mechanism 23 for fixing the fourth base 21 to or unlocking it from the first base 1, and the second telescopic part 20 is installed on the fourth base 21.

[0026] The second locking mechanism 23 includes several parallel second mounting slots 24 formed on the upper surface of the first base 1 and a fourth bolt assembly 25 passing through the fourth base 21. The second mounting slots 24 are shaped like a wide belly and a narrow opening. The fourth bolt assembly 25 includes a second locking bolt 26 with the screw head located in the second mounting slot 24 and the stud passing through the fourth base 21, and a second locking nut 27 threadedly connected to the second locking bolt 26 and located above the fourth base 21. The arrangement of multiple second mounting slots 24 can further reduce the installation difficulty of a single drive mechanism D and can be applied to different applications.

[0027] Both the first telescopic section 9 and the second telescopic section 20 are electric push rods.

[0028] The described 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 endurance testing device comprising a first base, a first mounting bracket disposed on the first base, a first mounting frame mounted on the first mounting bracket, the air spring endurance testing device characterized by: The first mounting frame is provided with a first through hole, and the testing device further comprises a composite driving mechanism, which comprises a first telescopic rod, a first telescopic part for driving the first telescopic rod to act, and a second base for mounting the first telescopic part, the first telescopic rod passes through the first through hole and has at least a part located in the first mounting frame, a first mounting station is formed between the upper end of the first telescopic rod and the inner side of the top of the first mounting frame, the lower end of the first telescopic part is rotationally connected to the second base and the rotation shaft is a first rotation shaft, a gap for the first telescopic part to swing is formed between the bottom of the first telescopic part and the second base located below, and a gap for the first telescopic rod to swing is formed between the first telescopic rod and the first through hole.

2. The air spring durability test device of claim 1, wherein: Each of the composite driving mechanisms comprises an adjustable third base mounted on the first base, a first locking mechanism for fixing the third base to the first base or unlocking the third base from the first base, and the second base is mounted on the third base.

3. The air spring durability test device of claim 2, wherein: The first locking mechanism comprises a plurality of first mounting grooves parallel to each other and provided on the upper end surface of the first base, and a first bolt assembly passing through the third base, the first mounting grooves are wide at the top and narrow at the bottom, the first bolt assembly comprises a first locking screw with a screw head provided in the first mounting groove and a screw column passing through the third base, and a first locking nut threadedly connected with the first locking screw and located above the third base.

4. The air spring durability test device of claim 1, wherein: The first through hole is a waist-shaped hole.

5. The air spring durability test device of claim 1, wherein: The first telescopic part is an electric push rod.

6. The air spring durability test device of claim 1, wherein: The inner side of the top of the first mounting frame is provided with a second bolt assembly.

7. The air spring durability test device of claim 1, wherein: The testing device further comprises a second mounting frame provided on the first base, a second mounting frame mounted on the second mounting frame, a second through hole provided on the second mounting frame, and a single driving mechanism, which comprises a second telescopic rod matched with the second through hole, a second telescopic part for driving the second telescopic rod to act, and a fourth base for mounting the second telescopic part, the second telescopic rod passes through the second through hole and has at least a part located in the second mounting frame, and a second mounting station is formed between the upper end of the second telescopic rod and the inner side of the top of the second mounting frame.

8. The air spring durability test device of claim 7, wherein: The second telescopic part is an electric push rod.

9. The air spring durability test device of claim 7, wherein: The inner side of the top of the second mounting frame is provided with a third bolt assembly, and an air spring is connected between the third bolt assembly and the second telescopic rod.

10. The air spring durability test device of claim 7, wherein: The number ratio of the single driving mechanism to the composite driving mechanism is 1:2-1:4.

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