CN109335629B

CN109335629B - Passive weight reducing mechanism

Info

Publication number: CN109335629B
Application number: CN201811234777.9A
Authority: CN
Inventors: 李健; 苗明达; 王荣耀; 黄煜; 刘岳飞; 吴青鸿
Original assignee: Guangxi University of Science and Technology
Current assignee: Guangxi University of Science and Technology
Priority date: 2018-10-23
Filing date: 2018-10-23
Publication date: 2024-01-23
Anticipated expiration: 2038-10-23
Also published as: CN109335629A

Abstract

The invention discloses a passive weight-reducing mechanism, which consists of a ball screw, a force arm, a sliding rail, a sliding block a, a spring and a supporting plate. The design is small in size, easy to assemble with the body, easy to control in weight reduction, adjustable in main part positions, capable of guaranteeing different positions and capable of achieving different weight reduction effects. The design has compact overall structure, can effectively utilize the existing installation space, can save the installation space of the design without too much reservation when carrying out industrial design, and lightens the workload of the whole design flow.

Description

Passive weight reducing mechanism

Technical Field

The invention relates to a weight-reducing mechanism, in particular to a passive weight-reducing mechanism.

Background

For the application of the weight-reducing mechanism, most weight-reducing mechanisms at the present stage adopt a motor, a movable pulley and a spring main part, and a winding method is adopted to realize weight reduction, so that the design not only needs to occupy a large space, but also has poor stability on an object to be moved, noise can be generated by the motor in the working process, and the comfort of people is reduced. Meanwhile, most weight reducing mechanisms in the market realize weight reduction only by means of the vertical extension of the springs, have no larger adjustable range, are difficult to adjust for the requirements of more changeable and are difficult to adjust, and the motor can rotate at a high speed in the working process, so that the danger brought by the working environment is not small, and the safety problem is particularly important.

Disclosure of Invention

Aiming at the defects of the prior art, the technical problem to be solved by the invention is to provide the passive weight-reducing mechanism, and the design is to increase the adjustability, safety and stability of the weight-reducing mechanism, and the motor is not used as a power source to provide power for the whole weight-reducing mechanism, so that the weight of the carried mobile equipment can be reduced, the safety and stability are improved, each module is detachably mounted, the maintainability and the replacement of each part are ensured, and the whole service life of the device is prolonged. The design is small in size, easy to assemble with the body, easy to control in weight reduction, adjustable in main part positions, capable of guaranteeing different positions and capable of achieving different weight reduction effects. The design has compact overall structure, can effectively utilize the existing installation space, can save the installation space of the design without too much reservation when carrying out industrial design, and lightens the workload of the whole design flow.

The technical scheme adopted by the invention is as follows:

the passive weight reducing mechanism consists of a ball screw, a force arm, a sliding rail, a sliding block a, a spring and a supporting plate, wherein the ball screw and the sliding rail are fixedly arranged on the supporting plate, the force arm is divided into a first force arm and a second force arm, the first force arm is a long force arm, the second force arm is a short force arm, the first force arm and the second force arm are combined into a triangular lever, the boundary part of the triangular lever is connected with the supporting plate through bolts, the first force arm is connected with the sliding block a, the sliding block a can slide up and down along the sliding rail, and the two end parts of the force arm are connected with the supporting plate through bolts; the ball screw consists of a sliding block b, a screw and a connecting plate, wherein the sliding block b can slide along the screw, the middle of the connecting plate is hollowed out, the sliding block b penetrates through the connecting plate and is provided with a spring hook to be hooked with the upper end of a spring, the lower end of the spring is hooked with bolts at two ends of a force arm, and the sliding block b can pull the spring to move along the screw.

Preferably, the ball screw and the sliding rail are welded on the supporting plate.

Preferably, a bearing is arranged in the first arm of force, so that the arm of force can move in all directions.

Preferably, a plurality of spring hooks can be arranged on the sliding block b, so that adaptability to weight reduction of weights with different masses is improved.

A manual rocking handle can be added at the end part of the ball screw, and the adjusting portability of the rotary screw is improved.

Preferably, the supporting plate can be hollowed except for the stress concentration part.

Preferably, the design adopts a novel aluminum alloy structure.

The beneficial effects of the invention are as follows:

1. compared with the prior art, the integrated design of the invention has the advantages of more flexibility, safety, small volume and stronger practicability, can be used as a weight reducing mechanism of various facilities, and is light and easy to install. The parts are all very simple parts, and the cost is low.

2. The invention has the advantages that the parts are welded at one time, most parts are connected by adopting the detachable bolts, and the parts are convenient to install and replace, so that the use persistence of the whole structure is improved, and the invention is possible to be modified according to the self needs by a user.

3. The spring initial suspension position adjusting mechanism adopts the ball screw, the effective stroke of the screw is considerable, and the adjustable range of weight reduction is enlarged. Meanwhile, the screw belongs to a labor-saving piece, and the spring can be easily stretched by rotating the end part of the screw by hand, so that the weight reduction adjustment is realized.

4. According to the invention, one end of the hanging weight is combined by the sliding rail and the sliding block, so that the friction force is effectively reduced, the vertical arrangement form is convenient for hanging the weight, and the direction of the force is always kept parallel to the sliding rail, so that the force transmission is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a passive weight-reduction mechanism according to an embodiment of the present invention;

in the figure: 1. a ball screw; 11. a slide block b, a lead screw; 13. a connecting plate; 2. force arm; 21, a first force arm; 22. a second force arm; 3. a slide rail; 4. a sliding block a;5. a spring; 6. and a support plate.

Description of the embodiments

The invention is described in further detail below with reference to the accompanying drawings.

Example 1

A passive weight reducing mechanism is shown in figure 1, and consists of a ball screw 1, a force arm 2 sliding rail 3, a sliding block a4, a spring 5 and a supporting plate 6, wherein the ball screw 1 and the sliding rail 3 are welded on the supporting plate 6, the force arm 2 is divided into a force arm I21 and a force arm II 22, the force arm I21 is a long force arm, the force arm II 22 is a short force arm, the force arm I21 is combined into a triangular lever, the boundary part of the triangular lever is connected with the supporting plate 6 through bolts, the force arm I21 is connected with the sliding block a4, the sliding block a4 is provided with the force arm I21 to move and slide along the sliding rail 3 under the condition of stress, and bearings are arranged in the force arm I21 to realize movement in all directions, and when the force arm I21 and the sliding rail 3 are ninety degrees, the force arm I21 is specified to be in a force balance state; the end part of the second force arm 22 is connected with the supporting plate 6 through bolts; the ball screw 1 is composed of a sliding block b11, a screw 12 and a connecting plate 13, wherein the sliding block b11 can slide along the screw 12, the middle of the connecting plate 13 is hollowed out, the sliding block b11 penetrates through the connecting plate and is provided with a spring hook to be hooked with the upper end of the spring 5, the lower end of the spring 5 is hooked with a bolt at the end part of the second arm 22, the sliding block b11 can pull the spring 5 to move along the screw 12, and if the gravity is reduced, the gravity is increased from zero to a certain value, and when the force balance is achieved, the spring 5 stops moving. When the balance of the whole mechanism force is required to be maintained, the pretightening force of the spring 5 is required to be regulated, so that the weight reducing mechanism returns to a balanced state, namely, the position of the sliding block b11 on the screw rod 12 is regulated, the length of the spring 5 is increased, and finally, the balance of the whole weight reducing mechanism is realized.

Example 2

Similar to the general structure of embodiment 1, the difference is that a plurality of spring hooks are arranged on the sliding block b11, and a plurality of springs 5 are hooked between the sliding block b11 and the second arm 22, so as to increase the adaptability to the weight reduction of heavy objects with different weights.

Example 3

Similar to the general structure of the embodiment 1, the difference is that a manual crank is added to the end of the ball screw 1 to improve portability of the rotary screw adjustment.

Example 4

The general structure is similar to that of embodiment 1, except that the supporting plate 6 can be hollowed out except for the stress concentration part, so that the material is saved, and the overall appearance is improved.

The above description of the embodiments is only for aiding in the understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The passive weight reducing mechanism is characterized by comprising a ball screw, a force arm, a sliding rail, a sliding block a, a spring and a supporting plate, wherein the ball screw and the sliding rail are fixedly arranged on the supporting plate, the force arm is divided into a first force arm and a second force arm, the first force arm is a long force arm, the second force arm is a short force arm, the first force arm and the second force arm are combined into a triangular lever, the boundary part of the triangular lever is connected with the supporting plate through bolts, the first force arm is connected with the sliding block a, the sliding block a can slide up and down along the sliding rail, and the two end parts of the force arm are connected with the supporting plate through bolts; the ball screw consists of a sliding block b, a screw and a connecting plate, wherein the sliding block b can slide along the screw, the middle of the connecting plate is hollowed out, the sliding block b penetrates through the connecting plate and is provided with a spring hook to be hooked with the upper end of a spring, the lower end of the spring is hooked with bolts at two ends of a force arm, and the sliding block b can pull the spring to move along the screw.

2. The passive weight-reducing mechanism of claim 1, wherein the ball screw and the slide rail are welded to the support plate.

3. The passive weight-reducing mechanism of claim 1, wherein the arm of force has bearings therein to allow movement in all directions.

4. The passive weight-reducing mechanism according to claim 1, wherein a plurality of spring hooks are arranged on the sliding block b, so that adaptability to weight reduction of weights with different weights is improved.

5. The passive weight-reducing mechanism of claim 1, wherein a manual crank is added to the end of the ball screw to improve portability of the rotary screw.

6. The passive weight-reducing mechanism of claim 1, wherein the support plate is hollowed out except for the force concentrating portion.