High-bearing-capacity trundle

Abstract

The utility model discloses a high-bearing-capacity trundle which comprises a bracket, a pivot is connected to the bracket in a rotating mode, a follow-up trundle frame located below the bracket is arranged on the pivot, a wheel shaft is connected to the trundle frame in a rotating mode, the axis of the wheel shaft is perpendicular to the axis of the pivot, and a first foot fork and a second foot fork are connected to the wheel shaft in a rotating mode. The first foot fork is rotationally connected with a first wheel close to the bottom and fixedly connected with a first spring mounting column close to the top, and the second foot fork is rotationally connected with a second wheel close to the bottom and fixedly connected with a second spring mounting column close to the top. And an extension spring is connected between the second spring mounting column and the first spring mounting column. The trundle has the advantages of being high in bearing capacity, long in service life, complete in overall function and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of luggage accessories, and more particularly to a high-load-bearing caster. Background Art

[0002] Continuing to use a caster when the rated load exceeds the caster's capacity will damage the caster. High-load-capacity casters also have a load limit. Therefore, if a warning is given when the caster is overloaded, damage can be avoided and the service life of the caster can be extended. Accordingly, the present invention provides a high-load-capacity caster. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a high-load-bearing caster with the characteristics of high load-bearing capacity and long service life.

[0004] In order to solve the above technical problems, the purpose of the present invention is achieved as follows: The present invention involves a high-load caster, including a bracket, which is rotatably connected to a pivot, and the pivot is provided with a wheel frame that moves and is located below the bracket, the wheel frame is rotatably connected to a wheel axle whose axis is perpendicular to the pivot axis, the wheel axle is rotatably connected to a first fork and a second fork, the first fork is rotatably connected to a first wheel near the bottom and fixedly connected to a first spring mounting column near the top, the second fork is rotatably connected to a second wheel near the bottom and fixedly connected to a second spring mounting column near the top, and a tension spring is connected between the second spring mounting column and the first spring mounting column.

[0005] The utility model is further configured as follows: a brake pad is provided above the first wheel and / or the second wheel, and an auxiliary frame is connected between the brake pad and the wheel frame.

[0006] The utility model is further configured as follows: brake pads are provided above the first wheel and the second wheel.

[0007] To sum up, the utility model has the following beneficial effects: the high-load-bearing caster involved in the utility model, as the load increases, the tension spring is stretched, until the two wheels and the fork swing upward, if the load exceeds the rated load, the wheel will contact the brake pad, thereby realizing a braking prompt to prevent the wheel from being used under overload conditions, thereby avoiding damage and extending the service life of the caster. The overall function is complete and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0009] Figure 2 It is a structural schematic diagram of another embodiment of the utility model. DETAILED DESCRIPTION

[0010] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the preferred embodiments of the present invention are described below in conjunction with specific examples. However, it should be understood that these descriptions are only for the purpose of further illustrating the features and advantages of the present invention, and are not intended to limit the patent claims of the present invention. Based on the examples in the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0011] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0012] Example 1

[0013] See also Figure 1 As shown, a high-load caster involved in this embodiment includes a bracket 1, the bracket 1 is rotatably connected to a pivot 2, the pivot 2 is provided with a wheel frame 3 that moves and is located below the bracket, the wheel frame 3 is rotatably connected to a wheel axle 4 whose axis is perpendicular to the pivot axis, the wheel axle 4 is rotatably connected to a first fork 5 and a second fork 6, the first fork 5 is rotatably connected to a first wheel 7 near the bottom and is fixedly connected to a first spring mounting column 8 near the top, the second fork 6 is rotatably connected to a second wheel 9 near the bottom and is fixedly connected to a second spring mounting column 10 near the top, and a tension spring 11 is connected between the second spring mounting column 10 and the first spring mounting column 9.

[0014] Furthermore, a brake pad 12 is provided above the first wheel 7 , and an auxiliary frame 13 is connected between the brake pad 12 and the wheel frame 3 .

[0015] Furthermore, brake pads 12 are provided on top of the first wheel 7 and the second wheel 9 .

[0016] In this embodiment, when the load on the caster is less than the rated load, the bracket 1 moves downward, the tension spring 11 is stretched, the first fork 5 and the first wheel 7 rotate relative to the wheel frame 3, and the second fork 6 and the second wheel 9 rotate relative to the wheel frame 3. However, the first wheel 7 does not contact the brake pad 12, and the wheel can still roll normally. When the load on the caster is greater than or equal to the rated load, the bracket 1 moves downward, the tension spring 11 is stretched, the first fork 5 and the first wheel 7 rotate relative to the wheel frame 3, and the second fork 6 and the second wheel 9 rotate relative to the wheel frame 3, until the first wheel 7 contacts the brake pad 12, and the wheel cannot roll normally. The overload is indicated by the inability to roll.

[0017] Example 2

[0018] See also Figure 2As shown, a high-load caster involved in this embodiment includes a bracket 1, the bracket 1 is rotatably connected to a pivot 2, the pivot 2 is provided with a wheel frame 3 that moves and is located below the bracket, the wheel frame 3 is rotatably connected to a wheel axle 4 whose axis is perpendicular to the pivot axis, the wheel axle 4 is rotatably connected to a first fork 5 and a second fork 6, the first fork 5 is rotatably connected to a first wheel 7 near the bottom and is fixedly connected to a first spring mounting column 8 near the top, the second fork 6 is rotatably connected to a second wheel 9 near the bottom and is fixedly connected to a second spring mounting column 10 near the top, and a tension spring 11 is connected between the second spring mounting column 10 and the first spring mounting column 9.

[0019] Furthermore, brake pads 12 are provided above the first wheel 7 and the second wheel 9 , and an auxiliary frame 13 is connected between the brake pads 12 and the wheel frame 3 .

[0020] In this embodiment, when the load on the caster is less than the rated load, the bracket 1 moves downward, the tension spring 11 is stretched, the first fork 5 and the first wheel 7 rotate relative to the wheel frame 3, and the second fork 6 and the second wheel 9 rotate relative to the wheel frame 3. However, neither the first wheel 7 nor the second wheel 9 contacts the brake pad 12, and the wheel can still roll normally. When the load on the caster is greater than or equal to the rated load, the bracket 1 moves downward, the tension spring 11 is stretched, the first fork 5 and the first wheel 7 rotate relative to the wheel frame 3, and the second fork 6 and the second wheel 9 rotate relative to the wheel frame 3, until both the first wheel 7 and the second wheel 9 contact the brake pad 12, and the wheel cannot roll normally. The overload is indicated by the inability to roll.

[0021] The high-load-bearing caster involved in the utility model has a tension spring that is stretched as the load increases, so that the two wheels and the fork swing upward. If the load exceeds the rated load, the wheel will come into contact with the brake pad, thereby providing a braking prompt to prevent the wheel from being used under overload conditions, thereby avoiding damage and extending the service life of the caster. The overall function is complete and the practicability is strong.

[0022] Unless otherwise specified, in the present invention, if there are terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicating orientation or positional relationship, they are based on the orientation or positional relationship actually shown and are only for the convenience of describing 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 operate in a specific orientation. Therefore, the terms describing orientation or positional relationship in the present invention are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, they can combine the embodiments and understand the specific meanings of the above terms according to specific circumstances.

[0023] Unless otherwise specified or limited, the terms "disposed," "connected," and "connected" in this utility model should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0024] The above describes in detail the preferred embodiments of the present invention. It should be understood that those skilled in the art can make numerous modifications and variations based on the concepts of the present invention without inventive effort. Therefore, any technical solutions that can be derived by those skilled in the art based on the concepts of the present invention through logical analysis, reasoning, or limited experimentation based on the existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-load caster, comprising a bracket, a pivot shaft rotatably connected to the bracket, a wheel frame provided on the pivot shaft for following movement and located below the bracket, characterized in that: The wheel frame is rotatably connected to a wheel axle whose axis is perpendicular to the pivot axis, and the wheel axle is rotatably connected to a first fork and a second fork, the first fork is rotatably connected to a first wheel near the bottom and fixedly connected to a first spring mounting column near the top, the second fork is rotatably connected to a second wheel near the bottom and fixedly connected to a second spring mounting column near the top, and a tension spring is connected between the second spring mounting column and the first spring mounting column.

2. The high load-bearing caster according to claim 1, characterized in that: Brake pads are provided above the first wheel and / or the second wheel, and an auxiliary frame is connected between the brake pads and the wheel frame.

3. The high load-bearing caster according to claim 2, characterized in that: Brake pads are provided on the tops of the first wheel and the second wheel.

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