Universal wheel with damping function

Abstract

The utility model discloses a universal wheel with a damping function, relates to the technical field of universal wheels, and aims to solve the problems in the prior art that most of the existing universal wheels adopt springs for damping, rebound is easy to occur during damping, and the damping effect is not good enough. A first middle pipe is arranged between the support and the damping support, the support and the damping support are rotationally connected through the first middle pipe, a damping mechanism is arranged on the support and comprises a shock-absorbing sleeve, a sleeve body of the shock-absorbing sleeve is fixedly connected with the damping support, a piston is slidably connected into the shock-absorbing sleeve, and the piston is connected with the shock-absorbing sleeve. A shock absorption sleeve is arranged on the shock absorption support, high-pressure air is arranged in the shock absorption sleeve, a piston rod is slidably connected to the lower portion of the piston, the end of the piston rod is connected with a connecting seat, the connecting seat is rotationally connected with the support, a lower plate is arranged on the shock absorption support, a bearing seat is arranged on the lower plate, and an upper plate is arranged on the bearing seat.

Description

Technical Field

[0001] The utility model relates to the technical field of universal wheels, in particular to a universal wheel with a shock absorption function. Background Technique

[0002] A universal wheel is a so-called swivel caster. Its structure allows 360-degree horizontal rotation. Casters are a general term, including swivel casters and fixed casters;

[0003] For example, the publication number is CN212579524U, a universal wheel with a shock absorption function, including a housing, a limit ring, a rolling ball and a fixing plate. A ball is sleeved on the limit ring. A fixing rod is welded on the outer surface of the limit ring. The limit ring is fixedly welded to the housing through the fixing rod. The diameter of the rolling ball is larger than that of the limit ring. The rolling ball is installed in the housing through the limit ring for positioning. The housing is sleeved on the outside of the rolling ball through the fixing rod. A fixing block is welded on the top surface of the housing. A spring is fixed on the fixing block. A fixing block is also welded on the bottom surface of the fixing plate. The fixing plate and the housing are fixedly connected through the fixing block and the spring;

[0004] The above application has the advantages that a spring is provided between the device and the universal wheel, which can play a shock absorption effect between the universal wheel and the device, and the bottom of the universal wheel is provided with a rolling ball for moving with the rolling ball, and immediate turning can be realized. However, using a spring for shock absorption, it is easy to have a springback during shock absorption, and the shock absorption effect is not good enough. Therefore, there is an urgent need in the market to develop a universal wheel with a shock absorption function to help people solve existing problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a universal wheel with a shock absorption function, so as to solve the problem that most current universal wheels use springs for shock absorption, and it is easy to have a springback during shock absorption, and the shock absorption effect is not good enough as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A universal wheel with a shock absorption function, including a bracket and a shock absorption support. A first middle tube is arranged between the bracket and the shock absorption support. The bracket and the shock absorption support are rotationally connected through the first middle tube. A shock absorption mechanism is arranged on the bracket. The shock absorption mechanism includes a shock absorption sleeve. The barrel of the shock absorption sleeve is fixedly connected to the shock absorption support. A piston is slidably connected in the shock absorption sleeve. High-pressure air is arranged in the shock absorption sleeve. A piston rod is fixedly connected below the piston. The end of the piston rod is connected to a connecting seat. The connecting seat is rotationally connected to the bracket.

[0007] Through the above technical solution, a cross structure is formed by using a bracket and a shock absorber support, and then a shock absorption mechanism is arranged between the bracket and the shock absorber support. The shock absorber support is connected by a shock absorption sleeve, the top end of the piston rod is connected to the bracket, and high-pressure air is filled in the shock absorption sleeve. Then, damping is provided by connecting the piston rod through the piston, thus forming a shock absorption mechanism. When the bracket and the shock absorber support rotate crosswise, damping will be generated, avoiding violent vibration on the shock absorber support. At the same time, since the high-pressure air is compressed, rebound is avoided, improving the shock absorption effect.

[0008] In a preferred embodiment of the present utility model, it can be further configured that: a polyurethane wheel is rotatably connected below the bracket, and a second middle tube is connected between the polyurethane wheel and the bracket.

[0009] Through the above technical solution, the polyurethane wheel adopts a steel core, and the second middle tube passes through the central position of the polyurethane wheel.

[0010] In a preferred embodiment of the present utility model, it can be further configured that: a sealing cover is arranged on the shock absorption mechanism, and a limiting head is arranged on the shock absorber support.

[0011] Through the above technical solution, the sinking amount of the shock absorber support is limited by the limiting head.

[0012] In a preferred embodiment of the present utility model, it can be further configured that: a lower plate is arranged on the shock absorber support, a bearing seat is arranged on the lower plate, an upper plate is arranged on the bearing seat, a bearing is arranged in the bearing seat, a locknut is arranged in the lower plate, and a main rivet is arranged on the upper plate and connected to the locknut.

[0013] Through the above technical solution, the main rivet passes through the bearing and is connected to the locknut, so that the lower plate is fixed to the shock absorber support, and the upper plate can rotate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. The utility model forms a cross structure by using a bracket and a shock absorber support, and then arranges a shock absorption mechanism between the bracket and the shock absorber support. The shock absorber support is connected by a shock absorption sleeve, the top end of the piston rod is connected to the bracket, and high-pressure air is filled in the shock absorption sleeve. Then, damping is provided by connecting the piston rod through the piston, thus forming a shock absorption mechanism. When the bracket and the shock absorber support rotate crosswise, damping will be generated, avoiding violent vibration on the shock absorber support. At the same time, since the high-pressure air is compressed, rebound is avoided, improving the shock absorption effect.

[0016] 2. The utility model uses the arrangement of the limiting head to prevent the shock absorber support from sinking excessively and hitting the polyurethane wheel, playing a role in protecting the wheel body. At the same time, it also prevents excessive bouncing, playing a role in assisting shock absorption and improving the reliability of use. Brief Description of the Drawings

[0017] Figure 1 It is an overall schematic diagram of a universal wheel with shock absorption function of the present utility model;

[0018] Figure 2 It is a front view of a universal wheel with shock absorption function of the present utility model;

[0019] Figure 3 It is a side view of a universal wheel with shock absorption function of the present utility model;

[0020] Figure 4 It is a schematic diagram of the internal structure of a universal wheel with shock absorption function of the present utility model;

[0021] In the figure: 1. Bracket; 2. Shock-absorbing support; 3. Lower plate; 4. Bearing seat; 5. Upper plate; 6. Shock-absorbing mechanism; 7. First middle tube; 8. Limit head; 9. Polyurethane wheel; 10. Second middle tube; 11. Shock-absorbing sleeve; 12. Sealing cover; 13. Piston; 14. Piston rod; 15. Connecting seat; 16. Bearing; 17. Main rivet; 18. Jam nut. Detailed Description of the Preferred Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0023] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0024] In the description of this application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "sheathed / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] Please refer to Figure 1 and Figure 4, an embodiment provided by the present utility model: a universal wheel with a shock absorption function, comprising a bracket 1 and a shock absorption support 2. A first middle tube 7 is arranged between the bracket 1 and the shock absorption support 2, and the bracket 1 and the shock absorption support 2 are rotationally connected through the first middle tube 7. A shock absorption mechanism 6 is arranged on the bracket 1. The shock absorption mechanism 6 comprises a shock absorption sleeve 11, the barrel of the shock absorption sleeve 11 is fixedly connected to the shock absorption support 2, a piston 13 is slidably connected in the shock absorption sleeve 11, high-pressure air is arranged in the shock absorption sleeve 11, a piston rod 14 is fixedly connected below the piston 13, the end of the piston rod 14 is connected to a connecting seat 15, the connecting seat 15 is rotationally connected to the bracket 1, the first middle tube 7 and the shock absorption support 2 are fixedly connected through a nut, the shock absorption sleeve 11 and the shock absorption support 2 are fixedly connected through a bolt, and the piston rod 14 and the connecting seat 15 are fixedly connected through a bolt.

[0026] Please refer to Figure 1 , Figure 2 and Figure 3 , a polyurethane wheel 9 is rotationally connected below the bracket 1, a second middle tube 10 is connected between the polyurethane wheel 9 and the bracket 1, and the second middle tube 10 and the bracket 1 are fixedly connected through a nut.

[0027] Please refer to Figure 4 , a sealing cover 12 is arranged on the shock absorption mechanism 6, a limiting head 8 is arranged on the shock absorption support 2, the limiting head 8 and the shock absorption support 2 are fixedly connected through a bolt, and the sealing cover 12 and the shock absorption mechanism 6 are fixedly connected through a bolt.

[0028] Please refer to Figure 1 , Figure 2 and Figure 3 , a lower plate 3 is arranged on the shock absorption support 2, a bearing seat 4 is arranged on the lower plate 3, an upper plate 5 is arranged on the bearing seat 4, and the lower plate 3 and the shock absorption support 2 are welded.

[0029] Please refer to Figure 4 , a bearing 16 is arranged in the bearing seat 4, and a locknut 18 is arranged in the lower plate 3.

[0030] Please refer to Figure 4 , a main rivet 17 is arranged on the upper plate 5 and connected to the locknut 18, and the main rivet 17 is threadedly connected to the locknut 18.

[0031] Working principle: When in use, the upper plate 5 is connected to the robot, and the polyurethane wheel 9 is in contact with the ground. During the movement of the robot, the bracket 1 rotates crosswise with the shock absorber support 2, causing the shock absorber support 2 to move downward. At this time, the shock absorber sleeve 11 moves upward and pulls on the end of the piston rod 14. At this time, the piston 13 moves downward, squeezing the air below the piston 13, thereby using high-pressure air to play a role in buffering and shock absorption. During the return process of the piston 13, the air above the piston 13 will be squeezed, thus preventing the piston 13 from rebounding too quickly, playing a role in suppressing the rebound and improving the shock absorption effect.

[0032] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A universal wheel with shock absorption function, comprising a bracket (1) and a shock absorption support (2), characterized in that: A first middle pipe (7) is arranged between the support (1) and the shock-absorbing bearing block (2). The support (1) and the shock-absorbing bearing block (2) are rotationally connected through the first middle pipe (7). A shock-absorbing mechanism (6) is arranged on the support (1). The shock-absorbing mechanism (6) comprises a shock-absorbing sleeve (11). The cylinder body of the shock-absorbing sleeve (11) is fixedly connected to the shock-absorbing bearing block (2). A piston (13) is slidably connected in the shock-absorbing sleeve (11). High-pressure air is arranged in the shock-absorbing sleeve (11). A piston rod (14) is fixedly connected to the lower part of the piston (13). The end part of the piston rod (14) is connected to a connecting seat (15). The connecting seat (15) is rotationally connected to the support (1).

2. The universal wheel with a shock-absorbing function according to claim 1, characterized in that: A polyurethane wheel (9) is rotationally connected to the lower part of the support (1). A second middle pipe (10) is connected between the polyurethane wheel (9) and the support (1).

3. The universal wheel with a shock absorption function according to claim 1, characterized in that: A sealing cover (12) is arranged on the shock-absorbing mechanism (6). A limiting head (8) is arranged on the shock-absorbing bearing block (2).

4. The universal wheel with a shock-absorbing function according to claim 1, characterized in that: A lower plate (3) is arranged on the shock-absorbing bearing block (2). A bearing seat (4) is arranged on the lower plate (3). An upper plate (5) is arranged on the bearing seat (4).

5. The universal wheel with shock absorption function according to claim 4, characterized in that: A bearing (16) is arranged in the bearing seat (4). A locknut (18) is arranged in the lower plate (3).

6. The universal wheel with a shock-absorbing function according to claim 5, wherein: A main rivet (17) is arranged on the upper plate (5) and is connected to the locknut (18).

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