阅读说明：本技术 一种变刚度弹性减振脚轮 (Variable-rigidity elastic vibration-damping caster wheel ) 是由 张龙 邱荣凯 刘秉斌 程俊 申江 罗远强 于 2020-07-03 设计创作，主要内容包括：本发明提供了一种变刚度弹性减振脚轮,该方案包括有钢轮、钢轮架和安装架；钢轮通过销轴固定在钢轮架的下方；安装架设置在钢轮架的上方；安装架和钢轮架之间设置有刚度弹簧；安装架上设置有多个能够安装固定刚度弹簧的快拆挡块；快拆挡块通过旋转方式实现在安装架上的拆装；刚度弹簧的刚度为多种或一种。该方案能够将快拆挡块部分或全部安装,可以主动调节减振脚轮的弹性刚度,能够适用于不同的振动工况。(The invention provides a variable-rigidity elastic vibration-damping caster which comprises a steel wheel, a steel wheel frame and a mounting frame; the steel wheel is fixed below the steel wheel frame through a pin shaft; the mounting frame is arranged above the steel wheel frame; a stiffness spring is arranged between the mounting frame and the steel wheel frame; a plurality of quick-release stop blocks capable of installing and fixing the stiffness springs are arranged on the mounting frame; the quick-release stop block is mounted on the mounting frame in a rotating mode; the stiffness of the stiffness spring is one or more. This scheme can be with the partial or whole installation of quick detach dog, can initiatively adjust the elastic rigidity of damping truckle, can be applicable to different vibration operating modes.)

1. A variable-rigidity elastic damping caster wheel is characterized in that: comprises a steel wheel, a steel wheel frame and a mounting frame; the steel wheel is fixed below the steel wheel frame through a pin shaft; the mounting rack is arranged above the steel wheel frame; a plurality of stiffness springs are arranged between the mounting frame and the steel wheel frame; a plurality of quick-release stop blocks capable of limiting the stiffness springs are arranged on the mounting rack; the quick-release stop block is mounted on the mounting frame in a rotating mode; the stiffness of the stiffness spring is one or more.

2. A variable stiffness elastomeric shock absorbing caster according to claim 1, wherein: a cylindrical guide sliding rail is arranged in the middle of the upper part of the steel wheel frame; the mounting bracket is sleeved on the cylindrical guide slide rail.

3. A variable stiffness elastomeric shock absorbing caster according to claim 1, wherein: and a plurality of spring mounting columns used for limiting the stiffness springs are arranged on the circumferential direction of the steel wheel frame.

4. A variable stiffness elastomeric shock absorbing caster according to claim 1, wherein: the mounting frame comprises an upper disc and a lower disc which are fixedly connected with each other; the lower disc is provided with mounting holes at the position corresponding to the spring mounting columns arranged on the steel wheel frame in the circumferential direction; a sliding groove capable of fixing the quick-release stop block is arranged in the mounting hole; the middle part of the lower disc is provided with a guide sliding hole which is sleeved on the guide sliding rail; the upper disc is circumferentially provided with a plurality of connecting holes; and the middle part of the upper disc is provided with a lightening hole.

5. A variable stiffness elastomeric shock absorbing caster according to claim 1, wherein: the quick-release stop block comprises a base and a handle; the handle is fixedly arranged above the base; the base can extend into the sliding groove in the mounting hole; the handle can drive the base to rotate to fix and remove the base in the mounting hole.

6. A variable stiffness elastomeric shock absorbing caster according to claim 1, wherein: the stiffness of the stiffness spring is one or a combination of more of 0.5K, 1.0K and 2.0K.

Technical Field

The invention relates to the field of transportation equipment, which is used for transportation and vibration reduction of equipment such as a mobile crane, a stair, a working platform and the like in working environments such as large wind tunnel plants, offshore drilling platforms and the like which are influenced by vibration, in particular to a variable-rigidity elastic vibration reduction caster.

Background

In large wind tunnel plants, offshore drilling platforms and other operating environments, transportation equipment is often affected by environmental vibration factors. The transportation equipment is not only influenced by environmental vibration factors in the operation process, but also continuously interferes with the normal work of the equipment when the equipment is transported and fixed, in particular to a mobile crane, a stair, a working platform and the like. The caster is improved to have vibration damping property, and the caster is an effective way for reducing the interference of environmental vibration to transportation equipment. At present, the elastic caster wheel mature in industry is mainly used for playing a role in buffering and damping when the running ground is uneven, and has a limited vibration isolation effect on environmental vibration.

Chinese patent CN2806204Y discloses an impact-resistant shock-absorbing single wheel, which is composed of a plastic outer ring, a rubber wheel core and a plastic inner ring, and is mainly dependent on the plastic outer ring and the plastic inner ring to play a role in buffering and shock absorption, and on the characteristics of the plastic itself, belonging to passive control. Chinese patents CN209073857U and CN203974400U disclose an elastic retractable caster, a chair, and a shock-absorbing caster for luggage, which all use springs as shock-absorbing means, but the elastic stiffness of the caster cannot be adjusted.

US Patent 3178758 discloses an integrated resilient castor wheel with a complex structure and an adjustable resilient rigidity. French patent FR2937286a1 discloses a cantilevered elastic wheel for a motor vehicle, mainly for the adaptive adjustment of the yaw angle of the wheel.

In conclusion, the prior art generally has the defect that the elastic rigidity of the caster is not adjustable, so that the caster is not suitable for different vibration working conditions. All parts of the device are easy to process, the precision requirement is low, the assembly is simple, and the elastic rigidity of the vibration-damping caster wheel can be actively adjusted by partially or completely dismounting/mounting the quick-release stop block. This structural form has not been reported so far.

Disclosure of Invention

The invention aims to solve the technical problem that transportation equipment in working environments such as large wind tunnel plants, offshore drilling platforms and the like is influenced by vibration, and provides a variable-rigidity elastic vibration-damping caster which adopts an elastic damping vibration-damping measure, can actively adjust the elastic rigidity and can be suitable for different vibration working conditions.

The scheme is realized by the following technical measures:

a variable-rigidity elastic vibration-damping caster comprises a steel wheel, a steel wheel frame and a mounting frame; the steel wheel is fixed below the steel wheel frame through a pin shaft; the mounting frame is arranged above the steel wheel frame; a stiffness spring is arranged between the mounting frame and the steel wheel frame; a plurality of quick-release stop blocks capable of installing and fixing the stiffness springs are arranged on the mounting frame; the quick-release stop block is mounted on the mounting frame in a rotating mode; the stiffness of the stiffness spring is one or more.

The scheme is preferably as follows: a cylindrical guide sliding rail is arranged in the middle of the upper part of the steel wheel frame; the mounting bracket is sleeved on the cylindrical guide slide rail.

The scheme is preferably as follows: and a plurality of spring mounting columns used for limiting the stiffness springs are arranged on the circumference of the steel wheel frame.

The scheme is preferably as follows: the mounting frame comprises an upper disc and a lower disc which are fixedly connected with each other; the lower disc is provided with mounting holes at the position corresponding to the spring mounting columns arranged on the steel wheel frame in the circumferential direction; a sliding groove capable of fixing the quick-release stop block is arranged in the mounting hole; the middle part of the lower disc is provided with a guide sliding hole which is sleeved on the guide sliding rail; the upper disc is circumferentially provided with a plurality of connecting holes; the middle part of the upper disc is provided with a lightening hole.

The scheme is preferably as follows: the quick-release stop block comprises a base and a handle; the handle is fixedly arranged above the base; the base can extend into the sliding groove in the mounting hole; the handle can drive the base to rotate to realize that the base is fixed and demolishs in the mounting hole.

The scheme is preferably as follows: the stiffness of the stiffness spring is one or more of 0.5K, 1.0K and 2.0K.

The beneficial effect of this scheme can learn according to the statement to above-mentioned scheme, because can install quick detach dog part or whole in this scheme, can initiatively adjust the elastic rigidity of damping truckle, can be applicable to different vibration operating modes.

Therefore, compared with the prior art, the invention has substantive characteristics and progress, and the beneficial effects of the implementation are also obvious.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the steel wheel frame.

Fig. 3 is a schematic structural view of the quick release stop.

Fig. 4 is a schematic structural view of the mounting bracket.

In the figure, 1 is a steel wheel, 2 is a pin shaft, 3 is a steel wheel frame, 4 is a 0.5K stiffness spring, 5 is a 1.0K stiffness spring, 6 is a 2.0K stiffness spring, 7 is a quick-release stop block, 8 is a mounting frame, 3-1 is a cylindrical guide sliding rail, 3-2 is a spring mounting cylinder, 7-1 is a handle, 7-2 is a base, 8-1 is a guide sliding hole, 8-2 is a mounting hole, 8-3 is a lightening hole, 8-4 is a connecting hole, and 8-5 is a sliding groove.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.