Pneumatic damping universal trundle
By designing a combined structure of air pressure shock absorber and spring on the wheels of the cart, the problem of the lack of shock absorption function of the existing wheels of the cart is solved, and multi-layer shock absorption effect and improvement of use durability are achieved.
Patent Information
- Application Number
- CN202420595217.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The wheels of existing trolleys or tool trucks lack shock absorption, which leads to inability to effectively protect goods during bumpy roads. The spring shock absorption effect of existing trolleys fails when the load is too heavy, and the length of the air pressure shock absorber is too short. Can't achieve good shock absorption effect.
A universal caster for air pressure shock absorption is designed, using a combined structure of air pressure shock absorber and spring. The height of the spring is higher than that of air pressure shock absorber. Through the telescopicity of the spring and the secondary shock absorption of the air pressure shock absorber, multi-layer reduction is formed. Shock effect.
It effectively improves the shock absorption effect of the cart on bumpy roads, ensures that the cargo can still obtain good shock protection when the load is too heavy, and reduces component wear through rubber pads and improves durability of use.
Smart Images
Figure CN222451843U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of universal wheels, in particular to a pneumatic shock-absorbing universal caster. Background Art
[0002] The wheels of trolleys, tool carts and other products on the market are all fixed wheels without shock absorption function. When such wheels are used on the trolleys, they cannot protect the items on the trolleys when the trolleys are pushed bumpy. Therefore, the current shock absorption demand only relies on adding some shock-absorbing foam or other protective measures to the item box to achieve the purpose of protecting the items.
[0003] Some existing cargo carts have springs installed on the wheel brackets to achieve shock absorption through the elasticity of the springs. However, the cargo on the cargo cart is sometimes heavy, exceeding the limit of the spring force, and the shock absorption effect of the spring will fail. The length of the gas pressure shock absorber is too short to achieve a good shock absorption effect. Utility Model Content
[0004] In view of the above-mentioned technical deficiencies, the purpose of the utility model is to provide a pneumatic shock-absorbing universal caster, which can achieve a shock-absorbing effect when a cart full of goods encounters a bumpy road section.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The utility model provides a pneumatic shock-absorbing universal caster, comprising a wheel seat, a connecting rod is provided on the top of the wheel seat, and the bottom of the connecting rod is fixedly connected to the wheel seat, a bracket is provided above the wheel seat, a screw hole is provided on one side of the bracket, a groove is provided below the screw hole, a rotating shaft is provided in the groove, and the connecting rod is connected to the bracket through the rotating shaft, and a pneumatic shock-absorbing device is provided on the other side of the bracket, and the pneumatic shock-absorbing device comprises a sleeve cylinder, and the sleeve cylinder is fixedly connected to the bracket.
[0007] Preferably, a gas pressure shock absorber is provided in the middle of the sleeve cylinder, and the bottom of the gas pressure shock absorber is fixedly connected to the sleeve cylinder, a connecting plate is provided on the top of the gas pressure shock absorber, and a rubber pad is provided on the top of the gas pressure shock absorber, and the rubber pad is fixedly connected to the gas pressure shock absorber.
[0008] Preferably, a support column is provided between the sleeve cylinder and the gas pressure shock absorber, a slide groove is left between the support column and the sleeve cylinder and the gas pressure shock absorber, and the bottom of the support column is fixedly connected to the sleeve cylinder.
[0009] Preferably, a spring is provided at the upper end of the abutment column, and the upper and lower ends of the spring are respectively abutted against the connecting plate and the abutment column.
[0010] Preferably, a connecting column is provided in the slide groove, the top end of the connecting column is fixedly connected to the connecting plate, and the connecting column is slidably connected to the sleeve cylinder.
[0011] Preferably, the height of the spring is higher than that of the gas pressure shock absorber.
[0012] The beneficial effects of the utility model are as follows: 1. The utility model cooperates with the gas pressure shock absorber and the spring. Since the height of the spring is higher than that of the gas pressure shock absorber, when encountering a bumpy road, the spring can be expanded and contracted to form shock absorption. At the same time, when the spring contracts, the connecting plate drops and hits the top of the gas pressure shock absorber, forming secondary shock absorption, thereby improving the shock absorption effect. At the same time, when the cart is loaded and exceeds the limit of the spring force, the gas pressure shock absorber can perform shock absorption.
[0013] 2. Because a rubber gasket is provided on the top of the gas pressure shock absorber, when the connecting plate comes into contact with the gas pressure shock absorber when it descends, the wear between the connecting plate and the gas pressure shock absorber can be reduced, thereby improving the durability of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is the overall structure diagram of the utility model.
[0016] Figure 2 It is a cross-sectional view of the utility model.
[0017] Figure 3 This is a diagram of a pneumatic shock absorbing device.
[0018] Explanation of the reference numerals: 1-wheel seat, 2-connecting rod, 3-bracket, 4-screw hole, 5-groove, 6-rotating shaft, 7-cylinder sleeve, 8-gas shock absorber, 9-connecting plate, 10-rubber cushion, 11-resist column, 12-slide groove, 13-spring, 14-connecting column. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] like Figure 1 and Figure 2As shown, a pneumatic shock-absorbing universal caster includes a wheel seat 1, a connecting rod 2 is provided on the top of the wheel seat 1, and the bottom of the connecting rod 2 is fixedly connected to the wheel seat 1, a bracket 3 is provided above the wheel seat 1, a screw hole 4 is provided on one side of the bracket 3, a groove 5 is provided below the screw hole 4, a rotating shaft 6 is provided in the groove 5, and the connecting rod 2 and the bracket 3 are connected by the rotating shaft 6, so that the wheel seat 1 can rotate, and a pneumatic shock-absorbing device is provided on the other side of the bracket 3, and the pneumatic shock-absorbing device includes a sleeve cylinder 7, and the sleeve cylinder 7 is fixedly connected to the bracket 3.
[0021] A gas pressure shock absorber 8 is provided in the middle of the sleeve cylinder 7, and the bottom of the gas pressure shock absorber 8 is fixedly connected to the sleeve cylinder 7, so that the wheel seat 1 as a whole forms a shock absorbing effect, and a connecting plate 9 is provided on the top of the gas pressure shock absorber 8. A rubber cushion 10 is provided on the top of the gas pressure shock absorber 8, and the rubber cushion 10 is fixedly connected to the gas pressure shock absorber 8. The addition of the rubber cushion 10 can reduce the loss when the gas pressure shock absorber 8 contacts the connecting plate 9.
[0022] like Figure 3 As shown, a support column 11 is provided between the sleeve cylinder 7 and the gas pressure shock absorber 8, and a slide groove 12 is left between the support column 11 and the sleeve cylinder 7 and the gas pressure shock absorber 8, and the bottom of the support column 11 is fixedly connected to the sleeve cylinder 7, and a spring 13 is provided at the upper end of the support column 11, and the upper and lower ends of the spring 13 are respectively in contact with the connecting plate 9 and the support column 11, so that the connecting plate 9 and the sleeve cylinder 7 form a shock absorber.
[0023] A connecting column 14 is provided in the slide groove 12 for fixing the position of the spring 13 . The top end of the connecting column 14 is fixedly connected to the connecting plate 9 , and the connecting column 14 is slidably connected to the sleeve cylinder 7 up and down.
[0024] The height of the spring 13 is higher than the gas pressure shock absorber 8, so that the connecting plate 9 and the cylinder 7 directly form a shock absorbing effect. At the same time, the connecting plate 9 descends and hits the top of the gas pressure shock absorber 8, forming secondary shock absorption, thereby improving the shock absorption effect.
[0025] How it works;
[0026] When the caster passes through a bumpy road section, the upper and lower ends of the spring 13 respectively contact the connecting plate 9 and the sleeve cylinder 7, so that the connecting plate 9 and the sleeve cylinder 7 form a shock absorber. At the same time, when the connecting plate 9 descends, it hits the gas pressure shock absorber 8, thereby forming a secondary shock absorber.
[0027] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.
Claims
1. A pneumatic shock-absorbing universal caster, comprising a wheel seat (1), characterized in that: A connecting rod (2) is provided on the top of the wheel seat (1), and the bottom of the connecting rod (2) is fixedly connected to the wheel seat (1); a bracket (3) is provided on the top of the wheel seat (1); a screw hole (4) is provided on one side of the bracket (3); a groove (5) is provided below the screw hole (4); a rotating shaft (6) is provided in the groove (5); and the connecting rod (2) and the bracket (3) are connected via the rotating shaft (6); a pneumatic shock absorbing device is provided on the other side of the bracket (3); the pneumatic shock absorbing device comprises a sleeve cylinder (7), and the sleeve cylinder (7) is fixedly connected to the bracket (3).
2. The pneumatic shock-absorbing universal caster according to claim 1, characterized in that: A gas pressure shock absorber (8) is provided in the middle of the sleeve cylinder (7), and the bottom of the gas pressure shock absorber (8) is fixedly connected to the sleeve cylinder (7), a connecting plate (9) is provided on the top of the gas pressure shock absorber (8), and a rubber cushion (10) is provided on the top of the gas pressure shock absorber (8), and the rubber cushion (10) is fixedly connected to the gas pressure shock absorber (8).
3. The pneumatic shock-absorbing universal caster according to claim 2, characterized in that: A support column (11) is provided between the sleeve cylinder (7) and the gas pressure shock absorber (8), a slide groove (12) is left between the support column (11), the sleeve cylinder (7) and the gas pressure shock absorber (8), and the bottom of the support column (11) is fixedly connected to the sleeve cylinder (7).
4. The pneumatic shock-absorbing universal caster according to claim 3, characterized in that: A spring (13) is provided at the upper end of the abutment column (11), and the upper and lower ends of the spring (13) are respectively in abutment with the connecting plate (9) and the abutment column (11).
5. The pneumatic shock-absorbing universal caster according to claim 4, characterized in that: A connecting column (14) is provided in the slide groove (12), the top end of the connecting column (14) is fixedly connected to the connecting plate (9), and the connecting column (14) is slidably connected to the sleeve cylinder (7).
6. The pneumatic shock-absorbing universal caster according to claim 4, characterized in that: The height of the spring (13) is higher than that of the gas pressure shock absorber (8).