High-wear-resistance damping universal wheel

Abstract

The utility model discloses a highly wear-resistant shock-absorbing universal wheel, which comprises a chassis, a mounting bracket and a plurality of rollers, the mounting bracket is rotatably mounted below the chassis, two mounting surfaces are arranged on the mounting bracket, a through mounting shaft is arranged on the mounting surfaces, three rollers are arranged on the mounting shaft side by side, and the adjacent rollers are spaced by the mounting surfaces; damping springs are installed at the two ends of the installation shaft, one ends of the damping springs are fixed to the bottom face of the installation support, and the other ends are installed on the installation shaft. According to the utility model, the three parallel rollers are arranged on the mounting shaft, so that the pressure borne by a single roller can be shared and relieved; long slotted holes are formed in the mounting bracket, damping springs are arranged on the two sides of the mounting shaft, and when the mounting shaft meets a bumpy ground, the mounting shaft can be finely adjusted up and down in the long slotted holes under the cooperation of the damping springs, so that a good damping effect is achieved; the wear-resistant sleeve and the wear-resistant salient points are arranged on the outer side of the roller, so that the wear resistance of the roller can be improved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of universal wheels, in particular to a highly wear-resistant and shock-absorbing universal wheel. Background Art

[0002] Universal wheels are movable casters, and the bracket on which the casters are installed can rotate 360 ​​degrees horizontally under dynamic or static loads. Universal wheels are widely used in various fields, and the structure of universal wheels also needs to be adjusted according to different usage scenarios.

[0003] After long-term use, the shock-absorbing ability of the universal wheel will decrease. The reduction in shock-absorbing function will also cause greater wear on the roller, thus affecting the service life of the caster. At the same time, the objects will also be damaged by bumps and collisions due to poor shock-absorbing effect, causing economic losses. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a highly wear-resistant shock-absorbing universal wheel with good shock-absorbing effect and long service life.

[0005] To this end, the technical solution of the utility model is: a highly wear-resistant shock-absorbing universal wheel, comprising a chassis, a mounting bracket and a plurality of rollers, the mounting bracket being rotatably mounted under the chassis, the mounting bracket being provided with two mounting surfaces, the mounting surfaces being provided with a penetrating mounting shaft, the mounting shaft being provided with three rollers arranged side by side, and adjacent rollers being spaced apart by the mounting surfaces; shock-absorbing springs are installed at both ends of the mounting shaft, one end of the shock-absorbing spring is fixed to the bottom surface of the mounting bracket, and the other end is installed on the mounting shaft.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: a vertically arranged long slot hole is provided on the mounting surface, the mounting shaft passes through the long slot hole, and an anti-slip sheet is fixed on the mounting shaft, and the anti-slip sheet is located on both sides of the mounting surface.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: the bottom surfaces on both sides of the mounting bracket are provided with spring mounting cylinders with openings facing downwards, and spring fixing columns are provided inside the spring mounting cylinders; the shock-absorbing spring is placed in the spring mounting cylinders, one end of which is fixed on the spring fixing column, and the other end is provided with a hook and hung on the mounting shaft.

[0008] On the basis of the above scheme and as a preferred scheme of the above scheme: the roller includes a skeleton and a wear-resistant sleeve, and the outer side of the wear-resistant sleeve is also provided with wear-resistant convex points; the wear-resistant sleeve and the wear-resistant convex points are both made of polyurethane.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: all rollers are of the same size, and the rollers are rotatably connected to the mounting shafts via bearings.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows: three parallel rollers are arranged on the mounting shaft, which can share and reduce the pressure borne by a single roller; a long slot hole is provided on the mounting bracket, and shock-absorbing springs are provided on both sides of the mounting shaft. When encountering bumpy ground, the mounting shaft can be fine-tuned up and down in the long slot hole with the cooperation of the shock-absorbing spring, thereby achieving a good shock-absorbing effect; a wear-resistant sleeve and wear-resistant protrusions are provided on the outer side of the roller, which can improve the wear resistance of the roller and extend its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a structural side view of the utility model;

[0013] Figure 3 It is a structural sectional view of the utility model.

[0014] Marked in the figure are: chassis 1, mounting bracket 2, first mounting surface 21, second mounting surface 22, long slot hole 23, spring mounting tube 24, spring fixing column 25, roller 3, skeleton 31, wear-resistant sleeve 32, wear-resistant protrusion 33, mounting shaft 4, anti-slip sheet 41, shock-absorbing spring 5. DETAILED DESCRIPTION

[0015] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific protection scope of the present invention.

[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "several" and "a number" is two or more, unless otherwise clearly and specifically defined.

[0017] The highly wear-resistant shock-absorbing universal wheel of this embodiment comprises a chassis 1, a mounting bracket 2 and a plurality of rollers 3. The mounting bracket 2 is rotatably mounted below the chassis 1. A rolling bearing is provided between the mounting bracket 2 and the chassis 1, so that the mounting bracket can rotate 360 ​​degrees.

[0018] The mounting bracket 2 is a π-shaped structure, with a first mounting surface 21 and a second mounting surface 22 vertically arranged at the bottom, and the first mounting surface 21 and the second mounting surface 22 are both provided with vertically arranged long slot holes 23, and the mounting shaft 4 can pass through the long slot holes 23 on the first mounting surface 21 and the second mounting surface 22, and fine-tune the up and down positions in the long slot holes 23; at the same time, a plurality of anti-skid sheets 41 are fixed on the mounting shaft 4, and the anti-skid sheets 41 can be located on both sides of the first mounting surface 21 and the second mounting surface 22, as well as on both sides of the roller 3, to prevent the mounting shaft 4 and the roller 3 from falling off.

[0019] The mounting shaft 4 is provided with three rollers 3 of the same size arranged side by side, and adjacent rollers 3 are spaced apart by mounting surfaces, that is, the three rollers 3 are respectively arranged on the left side of the first mounting surface 21, between the first mounting surface 21 and the second mounting surface 22, and on the right side of the second mounting surface 22. The three rollers 3 arranged side by side on the mounting shaft 4 can share and reduce the pressure borne by a single roller.

[0020] The roller 3 includes a frame 31 and a wear-resistant sleeve 32. The outer side of the wear-resistant sleeve 32 is also provided with wear-resistant convex points 33. The wear-resistant sleeve 32 and the wear-resistant convex points 33 are both made of polyurethane. The wear-resistant sleeve and the wear-resistant convex points provided on the outer side of the roller can improve the wear resistance of the roller and extend its service life.

[0021] The bottom surfaces of both sides of the mounting bracket 2 are provided with spring mounting tubes 24 with openings facing downwards, and spring fixing columns 25 are provided inside the spring mounting tubes 24; the shock absorbing spring 5 is placed in the spring mounting tubes 24, one end of which is fixed on the spring fixing column 25, and the other end is provided with a hook, which is hung on the mounting shaft 4. The mounting bracket 2 is provided with a long slot hole 23, and shock absorbing springs 5 ​​are arranged on both sides of the mounting shaft 4. When encountering bumpy ground, the mounting shaft 4 can be fine-tuned up and down in the long slot hole 23 with the cooperation of the shock absorbing spring 5, which has a good shock absorbing effect.

[0022] The shock-absorbing spring is in a compressed state. In daily use, the shock-absorbing spring maintains a force balance state. When used on uneven ground, the shock-absorbing spring can be compressed or applied force by the shock-absorbing spring to reduce the vibration of the cart and the equipment as a whole. At the same time, the shock-absorbing springs on both sides of the installation shaft can be subjected to different forces, and the three rollers are inclined, which can fit the ground better and achieve a good shock-absorbing effect.

[0023] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A highly wear-resistant and shock-absorbing universal wheel, comprising a chassis, a mounting bracket and a plurality of rollers, wherein the mounting bracket is rotatably mounted below the chassis, the mounting bracket is provided with two mounting surfaces, and the mounting surfaces are provided with a penetrating mounting shaft, characterized in that: The mounting shaft is provided with three rollers arranged side by side, and adjacent rollers are spaced apart by mounting surfaces; shock absorbing springs are installed at both ends of the mounting shaft, one end of the shock absorbing spring is fixed to the bottom surface of the mounting bracket, and the other end is installed on the mounting shaft.

2. The highly wear-resistant and shock-absorbing universal wheel according to claim 1, characterized in that: The installation surface is provided with a vertically arranged long slot hole, the installation shaft passes through the long slot hole, and an anti-skid sheet is fixed on the installation shaft, and the anti-skid sheet is located on both sides of the installation surface.

3. The highly wear-resistant and shock-absorbing universal wheel according to claim 1, characterized in that: The bottom surfaces on both sides of the mounting bracket are provided with spring mounting cylinders with openings facing downwards, and spring fixing columns are provided inside the spring mounting cylinders; the shock-absorbing spring is placed in the spring mounting cylinders, one end of which is fixed on the spring fixing column, and the other end is provided with a hook, which is hung on the mounting shaft.

4. The highly wear-resistant and shock-absorbing universal wheel according to claim 1, characterized in that: The roller comprises a frame and a wear-resistant sleeve, and the outer side of the wear-resistant sleeve is also provided with wear-resistant convex points; the wear-resistant sleeve and the wear-resistant convex points are both made of polyurethane.

5. The highly wear-resistant and shock-absorbing universal wheel according to claim 1, characterized in that: All rollers are of the same size and are rotationally connected to the mounting shaft via bearings.

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