A high load-bearing caster

Abstract

The utility model discloses a high-load caster, including a chassis, a shock-absorbing plate, a mounting bracket and a roller, wherein a shock-absorbing spring is provided between the shock-absorbing plate and the chassis, and the mounting bracket is mounted below the shock-absorbing plate; the mounting bracket extends two first mounting surfaces to the front side, and a first roller is rotatably mounted between the two first mounting surfaces; the mounting bracket extends two second mounting surfaces to the rear side, and two second rollers are mounted side by side between the two second mounting surfaces, and the first roller and the second roller have the same diameter and the same mounting height. The utility model installs three rollers on the mounting bracket, and the three rollers are arranged in a herringbone shape, which can share the pressure borne by a single roller and can effectively improve the overall bearing capacity of the caster; the first mounting surface and the second mounting surface on the mounting bracket are integrally processed and formed, and the anti-deformation force of the mounting bracket is strengthened by reinforcing ribs to extend the service life of the caster.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a high-load caster. Background Art

[0002] Casters include movable casters and fixed casters. Movable casters, also known as universal wheels, have a structure that allows 360-degree rotation; fixed casters, also known as fixed casters, have no rotating structure and cannot rotate. Casters are an important part of many cargo transport equipment. Existing casters usually include a bracket and an integrated roller that rotates on the bracket. However, a single roller cannot bear excessively heavy objects in actual use, and its supporting strength is low. When the caster moves on a bumpy road, the caster bracket will be subject to high-frequency collisions, which will further reduce the service life of the caster. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a high-load-bearing caster with a long service life and improved load-bearing capacity.

[0004] To this end, the technical solution of the utility model is: a high-load caster, comprising a chassis, a shock-absorbing plate, a mounting bracket and a roller, a shock-absorbing spring is provided between the shock-absorbing plate and the chassis, and the mounting bracket is assembled under the shock-absorbing plate; the mounting bracket extends two first mounting surfaces to the front side, and a first roller is rotatably mounted between the two first mounting surfaces; the mounting bracket extends two second mounting surfaces to the rear side, and two second rollers are installed side by side between the two second mounting surfaces, and the first roller and the second roller have the same diameter and the same mounting height.

[0005] On the basis of the above solution and as a preferred solution of the above solution: the mounting bracket is integrally formed, and reinforcing ribs are provided on the outer sides of the first mounting surface and the second mounting surface.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: a plurality of guide pillars are arranged between the chassis and the shock absorbing plate, the shock absorbing spring is sleeved on the guide pillars, and the two ends of the spring are respectively against the chassis and the shock absorbing plate.

[0007] On the basis of the above scheme and as a preferred scheme of the above scheme: a through hole is provided on the shock absorbing plate, the top end of the guide column is fixed on the chassis, and the bottom end passes through the through hole of the shock absorbing plate, and a limiting nut is also fixed on the bottom end of the guide column.

[0008] On the basis of the above solution and as a preferred solution of the above solution: the mounting bracket is fixedly connected to the shock absorbing plate or rotatably connected via a bearing.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. Three rollers are installed on the mounting bracket. The three rollers are arranged in a herringbone shape, which can share the pressure borne by a single roller and effectively improve the overall bearing capacity of the caster; the first mounting surface and the second mounting surface on the mounting bracket are integrally processed and formed, and the anti-deformation force of the mounting bracket is strengthened by reinforcing ribs to extend the service life of the caster.

[0011] 2. A shock-absorbing plate and a shock-absorbing spring are arranged between the chassis and the mounting bracket. The shock-absorbing spring is mounted on the guide column. When moving on an uneven ground, the shock-absorbing plate can move up and down along the guide column to squeeze the shock-absorbing spring, thereby achieving buffering and shock absorption to prevent the caster from being damaged due to vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a structural front view of the utility model;

[0014] Figure 3 It is a structural side view of the utility model;

[0015] Figure 4 It is a bottom view of the structure of the utility model.

[0016] Marked in the figure are: chassis 1, shock absorbing plate 2, mounting bracket 3, first mounting surface 31, second mounting surface 32, reinforcing rib 33, shock absorbing spring 4, guide column 5, limit nut 6, first roller 71, and second roller 72. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] See the attached drawings. The high-load caster described in this embodiment includes a chassis 1, a shock absorbing plate 2, a mounting bracket 3 and a roller. A shock absorbing spring 4 is provided between the shock absorbing plate 2 and the chassis 1. A plurality of guide pillars 5 are provided between the chassis 1 and the shock absorbing plate 2. The shock absorbing plate 2 is provided with a through hole. The top end of the guide pillar 5 is fixed on the chassis 1, and the bottom end passes through the through hole of the shock absorbing plate 2. A limit nut 6 is also fixed to the bottom end of the guide pillar 5. The shock absorbing spring 4 is sleeved on the guide pillar 5, and the two ends of the spring are respectively against the chassis 1 and the shock absorbing plate 2.

[0020] The mounting bracket 3 is assembled under the shock absorbing plate 2, and the mounting bracket 3 is fixedly connected to the shock absorbing plate 2 or rotatably connected via a bearing. If the mounting bracket is fixedly connected to the shock absorbing plate, the caster is a fixed wheel; if the mounting bracket is rotatably connected to the shock absorbing plate via a bearing, the caster is a universal wheel.

[0021] The mounting bracket 3 extends two first mounting surfaces 31 toward the front side, and two second mounting surfaces 32 toward the rear side. The mounting bracket is integrally formed, and reinforcing ribs 33 are provided on the outer sides of the first mounting surfaces 31 and the second mounting surfaces 32 to strengthen the anti-deformation force of the mounting bracket 3.

[0022] Three rollers are arranged on the mounting bracket 3, wherein the first roller 71 is rotatably mounted between the two first mounting surfaces 31 via the first rotating shaft, and the two second rollers 72 are installed side by side between the two second mounting surfaces 32 via the second rotating shaft. At the same time, the first roller 71 and the second roller 72 have the same diameter and the same mounting height, and the three are arranged in a herringbone shape, which can share the pressure borne by a single roller and effectively improve the overall bearing capacity of the caster.

[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 high-load caster, comprising a chassis, a shock-absorbing plate, a mounting bracket and a roller, wherein a shock-absorbing spring is provided between the shock-absorbing plate and the chassis, and the mounting bracket is assembled under the shock-absorbing plate; characterized in that: The mounting bracket extends two first mounting surfaces toward the front, and a first roller is rotatably mounted between the two first mounting surfaces; the mounting bracket extends two second mounting surfaces toward the rear, and two second rollers are mounted side by side between the two second mounting surfaces, and the first roller and the second roller have the same diameter and are mounted at the same height.

2. A high load-bearing caster according to claim 1, characterized in that: The mounting bracket is integrally formed, and reinforcing ribs are arranged on the outer sides of the first mounting surface and the second mounting surface.

3. A high load-bearing caster according to claim 1, characterized in that: A plurality of guide pillars are arranged between the chassis and the shock absorbing plate, and the shock absorbing spring is sleeved on the guide pillars, and two ends of the spring are respectively against the chassis and the shock absorbing plate.

4. A high load-bearing caster as claimed in claim 3, characterized in that: The shock absorbing plate is provided with a through hole, the top end of the guide column is fixed on the chassis, and the bottom end passes through the through hole of the shock absorbing plate, and a limiting nut is also fixed on the bottom end of the guide column.

5. The high load-bearing caster according to claim 1, characterized in that: The mounting bracket is fixedly connected to the shock absorbing plate or rotatably connected via a bearing.

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