CN204099529U - A kind of torque drive device - Google Patents

Abstract

The utility model discloses a torsion transmission device, which comprises an active part with a power source, the active part is connected with a rotary transmission part, the end of the rotary transmission part is connected with a driven part, and the driven part is matched with a guide rail assembly, wherein , the rotating transmission part is a soft material or a soft rope, one end of the rotating transmission part is connected to the active part, the position of the rotating transmission part and the active part is relatively fixed, the rotation of the active part drives the rotation of the rotating transmission part, and the rotation of the rotating transmission part is tightened and compressed, The other end of the rotating transmission part moves towards the direction of the active part, the active part stops or rotates in the opposite direction, the rotating transmission part is loosened and stretched, and the other end of the rotating transmission part moves away from the driving part, thus driving the driven part in the direction of the guide rail assembly The axial displacement along the active part under the guiding action. The torsion transmission device of the utility model can make the driven part have a non-polar linear stroke within a certain range according to different rotation angles of the driving part.

Description

a torsion drive

technical field

The utility model relates to the technical field of transmission, in particular, the utility model relates to a torsion transmission device.

Background technique

The existing transmission technologies have their own strengths, and the actual application is also used according to their characteristics. Simultaneously existing transmission method also has weak point respectively.

Considering the rotation of the active part, the driven part can be used as a transmission form of linear or approximate linear motion. For example, the rotation of the fluid transmission hydraulic pump drives the linear movement of the hydraulic rod. This is not a simple single mechanism of the active part to the driven part, but a complex system with various energy conversion elements and control elements; such as the four-bar mechanism In the crank-slider mechanism or crank-rocker mechanism, the rotation of the crank drives the slider to move in a straight line or the rocker to shake in a straight line. The distance is constant and unchangeable; for example, the screw mechanism has to overcome the large sliding friction on the thread surface during transmission; the linear stroke of the cam mechanism is fixed, and is limited by the pressure angle and the volume of the cam, so the progress is not large.

Consider the transmission form of both the active part and the driven part are rotary. For example, the teeth of the gear drive will emit uninterrupted noise when they are meshing, and they will be loaded instantaneously due to the sudden change of acceleration when changing direction, which will have a great impact on the machine, so it is not conducive to changing direction. At the same time, the gear drive; Wheel transmission is driven by friction, and the mechanism has to bear a large radial force, which is not conducive to light weight. The sprocket transmission also has the problem of unfavorable light weight; the hydraulic transmission also has the problem of complicated mechanism.

Utility model content

The purpose of this utility model is to aim at the relative deficiencies of the prior art, and to provide a transmission form in which the active part rotates and the driven part can move in a straight line or approximately straight line. The cam mechanism has a large stroke, and at the same time, according to the different rotation angles of the active part, the driven part can have a torsional transmission device with a stepless linear stroke within a certain range. At the same time, the active part and the driven part of the torsional transmission are relatively separated when no power is transmitted, and the vibration of one side will not have a great influence on the other side.

The technical solution provided by the utility model is: a torsion transmission device, including an active part with a power source, the active part is connected with a rotating transmission part, the end of the rotating transmission part is connected with a driven part, and the driven part is matched with a The guide rail assembly, wherein the rotating transmission part is a soft material or a soft rope, one end of the rotating transmission part is fixed on the active part, the position of the rotating transmission part and the active part is relatively fixed, the rotation of the active part drives the rotation of the rotating transmission part, and the rotation of the rotating transmission part Tighten and compress, the other end of the rotating transmission part moves to the direction of the active part, the active part stops drilling or rotates in reverse, the rotating transmission part loosens and stretches, and the other end of the rotating transmission part moves away from the active part, thus driving the The moving part is axially displaced along the driving part under the guidance of the guide rail assembly.

Preferably, in the guide rail assembly, a limiting hole is opened on the follower, a guide column passes through the limiting hole, and the follower moves along the guiding column under the cooperation of the guiding column and the limiting hole.

The structure of the guide rail assembly can also adopt a guide block arranged on the follower, and the guide block moves in a guide rail groove on a guide rail.

The guide rail assembly can also adopt: a guide block arranged on both sides of the follower, the guide block is provided with a hole, the guide post passes through the hole of the guide block, and the guide block moves on the guide post.

Further, a return spring is provided between the driving member and the driven member, and the return spring is arranged inside the rotating transmission member.

The beneficial effects of the utility model are: the torsion transmission device of the utility model is simpler than the fluid transmission, more flexible than the four-bar mechanism, and has a larger stroke than the cam mechanism. Stepless linear travel, while the torsional transmission active part and the driven part are relatively separated when no power is transmitted, and the vibration of one side will not have a great impact on the other.

Description of drawings

A more complete and better understanding of the invention, and many of its attendant advantages, will be readily appreciated by reference to the following detailed description when considered in conjunction with the accompanying drawings, but the accompanying drawings illustrated herein are intended to provide a further understanding of the invention , constituting a part of the utility model, the exemplary embodiment of the utility model and its description are used to explain the utility model, and do not constitute an improper limitation of the utility model, wherein:

Fig. 1 is the structural representation of embodiment 1 of the present utility model;

Fig. 2 is the structural representation of embodiment 2 of the present utility model;

Fig. 3 is a schematic structural view of Embodiment 3 of the present utility model.

Detailed ways

In order to make the above purpose, features and advantages of the utility model more obvious and understandable, the utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1:

As shown in Figure 1, a torsion transmission device of the present utility model includes an active part 1 with a power source, the active part 1 is connected with a rotary transmission part 2 of soft material, and the end of the rotary transmission part 2 is connected with a driven Part 3, the follower 3 is equipped with a guide rail assembly, the guide rail assembly includes guide blocks 4 arranged on both sides of the follower 3, the guide block 4 is provided with a hole 5, the guide post 6 passes through the hole 5 of the guide block 4, and the guide block 4 drives the follower 3 to move on the guide post 6.

Among them, one end of the rotary transmission part 2 is fixed on the active part 1, and keeps a fixed position with the active part 1, the rotation of the active part 1 drives the rotation of the rotary transmission part 2, the rotation of the rotary transmission part 2 is tightened and compressed, and the other end of the rotary transmission part 2 Move to the direction of the active part 1, the active part 1 stops or rotates in the opposite direction, the rotary transmission part 2 is loosened and stretched, and the other end of the rotary transmission part 2 moves away from the active part 1, thereby driving the driven part 3 in the direction of the guide rail assembly Under the action of the guide, it is axially displaced along the active part 1. A return spring 7 is provided between the active part 1 and the driven part 3, and the return spring 7 is arranged inside the rotary transmission part 2 to assist the rotary transmission part 2 to return to its original state and stretch.

Example 2:

As shown in Figure 2, a torsion transmission device provided by Embodiment 2 of the present utility model includes an active part 1 with a power source, and the active part 1 is connected with a rotating transmission part 2 made of soft cable material, and the rotating transmission part 2 The end is connected with a follower 3, and the follower 3 is equipped with a guide rail assembly. The guide rail assembly is that a limit hole 8 is opened on the follower 3, a guide post 9 passes through the limit hole 8, and the follower 3 guides The column 9 moves along the guide column 9 under the cooperation of the limiting hole 8 .

Among them, one end of the rotary transmission part 2 is fixed on the active part 1, and keeps a fixed position with the active part 1, the rotation of the active part 1 drives the rotation of the rotary transmission part 2, the rotation of the rotary transmission part 2 is tightened and compressed, and the other end of the rotary transmission part 2 Move to the direction of the active part 1, the active part 1 stops or rotates in the opposite direction, the rotary transmission part 2 is loosened and stretched, and the other end of the rotary transmission part 2 moves away from the active part 1, thereby driving the driven part 3 in the direction of the guide rail assembly Under the action of the guide, it is axially displaced along the active part 1. A return spring 7 is provided between the active part 1 and the driven part 3, and the return spring 7 is arranged inside the rotary transmission part 2 to assist the rotary transmission part 2 to return to its original state and stretch. The return spring 7 in this embodiment can be arranged on the guide column 9 .

Example 3:

As shown in Figure 3, a torsion transmission device provided by Embodiment 3 of the present invention includes an active part 1 with a power source, the active part 1 is connected with a rotating transmission part 2 made of soft material, and the end of the rotating transmission part 2 The follower 3 is connected, and the follower 3 is equipped with a guide rail assembly. The guide rail assembly is a guide block 4 arranged on the follower 3 , and the guide block 4 moves in the guide rail groove 11 on the guide rail 10 .

Among them, one end of the rotary transmission part 2 is fixed on the active part 1, and keeps a fixed position with the active part 1, the rotation of the active part 1 drives the rotation of the rotary transmission part 2, the rotation of the rotary transmission part 2 is tightened and compressed, and the other end of the rotary transmission part 2 Move to the direction of the active part 1, the active part 1 stops or rotates in the opposite direction, the rotary transmission part 2 is loosened and stretched, and the other end of the rotary transmission part 2 moves away from the active part 1, thereby driving the driven part 3 in the direction of the guide rail assembly Under the action of the guide, it is axially displaced along the active part 1. A return spring 7 is provided between the active part 1 and the driven part 3, and the return spring 7 is arranged inside the rotary transmission part 2 to assist the rotary transmission part 2 to return to its original state and stretch.

The description of the above examples is only used to help understand the core idea of the present utility model; meanwhile, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and application range, in summary As stated above, the contents of this specification should not be construed as limiting the present utility model.

Claims (5)

1. A torsion transmission device, characterized in that it comprises an active part with a power source, the active part is connected with a rotary transmission part, the end of the rotary transmission part is connected with a driven part, and the driven part is fitted with a guide rail assembly, Wherein, the rotary transmission part is a soft material or a soft rope, one end of the rotary transmission part is fixed on the active part, the position of the rotary transmission part and the active part is relatively fixed, the rotation of the active part drives the rotation of the rotary transmission part, and the rotation of the rotary transmission part is tightened and compressed , the other end of the rotating transmission part moves towards the direction of the active part, the active part stops rotating or rotates in the opposite direction, the rotating transmission part loosens and stretches, and the other end of the rotating transmission part moves away from the driving part, thus driving the driven part on the guide rail Under the guiding action of the assembly, it is axially displaced along the active part. the 2. A torsion transmission device according to claim 1, characterized in that, the guide rail assembly is that a limiting hole is opened on the follower, a guide post passes through the limit hole, and the follower is connected between the guide post and the limit hole. Move along the guide column under the cooperation of the limit hole. the 3 . The torsion transmission device according to claim 1 , wherein the guide rail assembly is a guide block arranged on the follower, and the guide block moves in a guide rail groove on a guide rail. 4 . the 4. A twist transmission device according to claim 1, wherein the guide rail assembly is a guide block arranged on both sides of the follower, the guide block is provided with a hole, and the guide post passes through the guide block. hole, the guide block moves on the guide post. the 5 . The torsion transmission device according to claim 1 , wherein a return spring is provided between the driving member and the driven member, and the return spring is arranged inside the rotating transmission member. 6 . the