CN211852550U

CN211852550U - Coupling transmission structure

Info

Publication number: CN211852550U
Application number: CN201922150446.3U
Authority: CN
Inventors: 韩小强; 马永福; 纪广胜; 马云飞; 赵春山; 李永锋; 温小杰; 韩雪征; 马立新; 李江波; 郝志伟
Original assignee: Hebei Jinxi Iron And Steel Group Co ltd
Current assignee: Hebei Jinxi Iron And Steel Group Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-11-03
Anticipated expiration: 2029-12-04

Abstract

The utility model provides a transmission structure of a coupler, which relates to the technical field of mechanical transmission and comprises a driving part, a driven part, a first coupling shaft part, a second coupling shaft part, a lever and an elastic abutting part; the driving part is provided with an output shaft; the driven part is provided with an input shaft; the periphery of the first shaft coupling part is provided with a circumferential accommodating groove arranged around a main shaft of the first shaft coupling part; the second coupling shaft part is clamped with the first coupling shaft part; the upper end of lever is connected with the driving piece, and the lower extreme is used for the lateral wall butt with the circumference holding tank. The utility model provides a shaft coupling transmission structure realizes the effective connection of output shaft and input shaft through first antithetical couplet axial region and second antithetical couplet axial region, gives the follower with the rotation transmission of driving part, and the lever passes through the drive of driving piece, realizes promoting breaking away from of first antithetical couplet axial region and second antithetical couplet axial region, realizes driven stopping between output shaft and the input shaft, has improved the accuracy nature of shaft coupling transmission mechanism control, the effectual equipment trouble of having avoided, has improved the safety in utilization of equipment.

Description

Coupling transmission structure

Technical Field

The utility model belongs to the technical field of mechanical transmission, more specifically say, relate to a coupling transmission structure.

Background

In the operation process of large-scale mechanical equipment, an electric motor, a hydraulic motor, or the like is often used as a driving member to input power. In the existing mechanism, a coupling is mostly used for connecting two shafts. The coupling is a device for connecting the output shaft and the input shaft or the output shaft and the rotating member, rotating together in the process of transmitting motion and power and not separating under normal conditions. However, since occasionally a device fails during the transmission of the rotational speed of the device, the connection between the output shaft and the input shaft needs to be cut off in time in order to avoid excessive safety risks and loss of the device. The existing cutting-off mode can only be controlled by cutting off the driving part, the time delay is too long, the equipment is easy to damage, and casualties can be caused in serious cases.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shaft coupling transmission structure to solve the technical problem that the scram degree of difficulty is big among the drive mechanism transmission process that exists among the prior art, fragile equipment.

In order to achieve the above object, the utility model adopts the following technical scheme: providing a transmission structure of a coupler, which comprises a driving part, a driven part, a first coupling shaft part, a second coupling shaft part, a lever and an elastic abutting part; the driving part is provided with an output shaft, and the outer side of the driving part is provided with a rotating shaft which is perpendicular to a main shaft of the output shaft; the driven part is provided with an input shaft with a main shaft collinear with the main shaft of the output shaft; the first coupling part is arranged on the output shaft and is in sliding connection with the output shaft along the axial direction of the output shaft, and a circumferential accommodating groove arranged around a main shaft of the first coupling part is formed in the periphery of the first coupling part; the second coupling part is arranged on the input shaft and is clamped with the first coupling part; the middle part of the lever is rotatably connected with the rotating shaft, the upper end of the lever is connected with a driving piece, the lower end of the lever is positioned in the circumferential accommodating groove and is used for being abutted against the side wall of the circumferential accommodating groove and pushing the first coupling part to be far away from the second coupling part, and the fixed end of the driving piece is rotatably connected with the driving piece; one end of the elastic abutting part is fixedly connected with the output shaft, and the other end of the elastic abutting part abuts against the end face of one side, close to the driving part, of the first coupling part.

As another embodiment of the present application, the lever includes a rod body, a frame and a butting wheel, wherein the rod body is rotatably connected with the rotating shaft; the opening of the frame is downwards arranged at the lower end of the rod body and penetrates through the rod body along the axial direction of the output shaft; the butt wheel rotates and connects in the opening of frame, and the butt wheel is used for with the lateral wall butt of circumference holding tank.

As another embodiment of the present application, the frame comprises a cross bar and two uprights; the main shaft of the cross rod, which is vertical to the rod body, is arranged at the lower end of the rod body; the two upright posts are respectively connected with two ends of the cross rod and extend to one side far away from the rotating shaft.

As another embodiment of this application, the butt wheel is parallel to the horizontal pole and rotates the lower extreme that connects in the pole setting, and the periphery of butt wheel outwards protrusion in the pole setting.

As another embodiment of the present application, a first flat key is provided between the first coupling portion and the output shaft, and a second flat key is provided between the second coupling portion and the input shaft.

As another embodiment of the present application, the first coupling portion includes a first shaft body and a first connection disc; the first shaft body is provided with a first central hole which is used for being sleeved at the outer end of the output shaft; the first connecting disc is arranged on one side, away from the driving part, of the first shaft body, and first meshing teeth are arranged on the end face of the first connecting disc.

As another embodiment of the present application, the second coupling portion includes a second shaft body and a second connecting disc, the second shaft body is provided with a second central hole for being sleeved on the outer end of the input shaft; the second connecting disc is arranged on one side, away from the driven part, of the second shaft body, and second meshing teeth used for being clamped with the first meshing teeth are arranged on the end face of the second connecting disc; the second center hole extends into the second connecting disc, and a boss used for being abutted to the outer end face of the input shaft is arranged in the second center hole.

As another embodiment of the present application, the elastic abutting member includes a fixed block and an elastic element, the fixed block is disposed on the outer periphery of the output shaft; one end of the elastic element is connected with the end face of the fixed block, and the other end of the elastic element is abutted against the outer end face of the first coupling shaft part; the main axis of the elastic element is arranged parallel to the main axis of the output shaft.

As another embodiment of this application, the elasticity butt piece is equipped with a plurality ofly, and a plurality of elasticity butt piece is evenly laid in the periphery of output shaft.

As another embodiment of the present application, the coupling transmission mechanism further includes a controller electrically connected to the driven member, a rotation speed sensor electrically connected to the controller is disposed on the input shaft, and the controller is electrically connected to the driving member.

The utility model provides a shaft coupling transmission structure's beneficial effect lies in: the utility model provides a shaft coupling transmission structure, realize the effective connection of output shaft and input shaft through first antithetical couplet axial region and second antithetical couplet axial region, the elastic butt piece is convenient for guarantee that first antithetical couplet axial region and second antithetical couplet axial region link to each other at the stable joint of transfer process, give the follower with the rotation transmission of driving part, the lever passes through the drive of driving piece, promote breaking away from of first antithetical couplet axial region and second antithetical couplet axial region, realize driven stopping between output shaft and the input shaft, the accuracy nature of shaft coupling drive mechanism control has been improved, the effectual equipment trouble of having avoided, the safety in utilization of equipment has been improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic view of a partial cross-sectional structure of a transmission state of a transmission structure of a coupling according to an embodiment of the present invention;

fig. 2 is a schematic view of a partial cross-sectional structure of a coupling transmission structure in a disengaged state according to an embodiment of the present invention;

FIG. 3 is an enlarged schematic view of the actuator and lever of FIG. 2;

FIG. 4 is a schematic right side view of the actuator and lever of FIG. 3;

fig. 5 is a partial sectional structure diagram of the elastic abutting part and the output shaft in a right view.

In the figure: 100. a driving member; 110. an output shaft; 200. a driven member; 210. an input shaft; 300. a first coupling portion; 310. a first shaft body; 320. a first splice tray; 330. a first central aperture; 340. a first flat key; 350. a first meshing tooth; 360. a circumferential accommodating groove; 400. a second coupling portion; 410. a second shaft body; 420. a second connecting disc; 430. a second central aperture; 440. a second flat key; 450. a second meshing tooth; 460. a boss; 500. a lever; 510. a rod body; 520. a frame; 521. a cross bar; 522. erecting a rod; 530. a butting wheel; 541. a rotating shaft; 542. a drive member; 600. an elastic abutting member; 610. a fixed block; 620. an elastic element.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, a coupling transmission structure according to the present invention will now be described. The coupling transmission structure comprises a driving member 100, a driven member 200, a first coupling part 300, a second coupling part 400, a lever 500 and an elastic abutting member 600; the driving member 100 is provided with an output shaft 110, and a rotating shaft 541 perpendicular to a main shaft of the output shaft 110 is arranged outside the driving member 100; the driven member 200 is provided with an input shaft 210 having a main axis collinear with that of the output shaft 110; the first coupling portion 300 is arranged on the output shaft 110 and is in sliding connection with the output shaft 110 along the axial direction of the output shaft 110, and a circumferential accommodating groove 360 arranged around a main shaft of the first coupling portion 300 is formed in the periphery of the first coupling portion 300; the second coupling portion 400 is disposed on the input shaft 210, and the second coupling portion 400 is clamped with the first coupling portion 300; the middle part of the lever 500 is rotatably connected with the rotating shaft 541, the upper end of the lever 500 is connected with the driving member 542, the lower end of the lever 500 is positioned in the circumferential accommodating groove 360 and is used for abutting against the side wall of the circumferential accommodating groove 360 and pushing the first coupling shaft part 300 to be far away from the second coupling shaft part 400, and the fixed end of the driving member 542 is rotatably connected with the driving member 100; one end of the elastic abutting member 600 is fixedly connected to the output shaft 110, and the other end abuts against the end surface of the first coupling portion 300 on the side close to the driving member 100. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. The terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The utility model provides a shaft coupling transmission structure, compared with the prior art, the utility model provides a shaft coupling transmission structure, realize the effective connection of output shaft 110 and input shaft 210 through first antithetical couplet axial region 300 and second antithetical couplet axial region 400, elasticity butt piece 600 is convenient for guarantee the stable joint in the two data send process, give follower 200 with the rotation transmission of driving piece 100, lever 500 passes through the drive of driving piece 542, realize promoting breaking away from of first antithetical couplet axial region 300 and second antithetical couplet axial region 400, realize driven stopping between output shaft 110 and the input shaft 210, the accuracy nature of shaft coupling transmission mechanism control has been improved, the effectual equipment trouble of having avoided, the safety in utilization of equipment has been improved.

In this embodiment, the output shaft 110 is located in the first central hole 330, the gap between the output shaft 110 and the first coupling portion 300 is controlled to be 0.05-0.10 mm, and the two can slide relatively along the axial direction without sliding too smoothly, and this matching form is used to ensure effective engagement between the first coupling portion 300 and the second coupling portion 400, and avoid the problem that the first coupling portion 300 slides to one side of the driving member 100 without receiving the pushing force of the lever 500 to disengage from the second coupling portion 400. The lower end of the lever 500 is located in the circumferential receiving groove 360, and abuts against the side wall of the circumferential receiving groove 360 on the side close to the output shaft 110, thereby pushing the first coupling portion 300 away from the second coupling portion 400. The fixed end of the driving member 542 is rotatably connected with the driving member 100; when the output end of the driving member 542 extends outwards, the lever 500 rotates around the rotating shaft 541 at the middle part, the upper end of the lever 500 rotates clockwise, the fixed end of the driving member 542 also rotates clockwise around the hinge point where the driving member 542 is connected with the driving member 100, smooth swinging of the lever 500 is realized, and clamping stagnation is avoided.

Further, besides the control through the size, the elastic abutting piece 600 is used for pushing the end face of the first coupling part 300 close to the driving piece 100, so that the first coupling part 300 is ensured to have the pushing force towards the second coupling part 400, and the separation of the first coupling part 300 and the second coupling part 400 is avoided. The elastic abutting piece 600 is arranged on the output shaft 110 and can rotate along with the rotation of the output shaft 110, and the first coupling part 300 is pressed tightly at any time, so that the first coupling part 300 and the second coupling part 400 are stably clamped.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, the lever 500 includes a rod 510, a frame 520 and a contact wheel 530, wherein the rod 510 is rotatably connected to the shaft 541; the opening of the frame 520 is downwardly disposed at the lower end of the rod 510 and axially penetrates the output shaft 110; the abutment wheel 530 is rotatably connected in the opening of the frame 520, and the abutment wheel 530 is configured to abut against the sidewall of the circumferential receiving groove 360. The middle part of the rod body 510 is provided with a rotating shaft 541 fixed on the side of the driving part 100, when the upper end of the rod body 510 is driven by the driving part 542, the lower end of the rod body 510 rotates clockwise around the rotating shaft 541 to abut against the side surface of the circumferential accommodating groove 360 close to the side of the driving part 100, and pushes the first coupling shaft part 300 to move towards the side far away from the second coupling shaft part 400, so that the first coupling shaft part 300 and the second coupling shaft part 400 are separated. The butt joint wheel 530 is arranged in the frame 520 at the lower end of the rod body 510 and is rotationally connected with the frame 520, and the butt joint with the side wall of the circumferential accommodating groove 360 is realized by the outer wall of the butt joint wheel 530.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 3 to 4, the frame 520 includes a cross bar 521 and a vertical bar 522; the cross rod 521 is arranged at the lower end of the rod body 510 and is perpendicular to the main shaft of the rod body 510; the vertical rod 522 is connected to two ends of the cross rod 521 and extends to a side away from the rotating shaft 541. The abutting wheel 530 is rotatably connected to the lower end of the vertical rod 522 parallel to the cross rod 521, and the outer periphery of the abutting wheel 530 protrudes outwards from the vertical rod 522. The form that horizontal pole 521 and pole setting 522 combine has formed a downward rectangle frame of opening, and butt wheel 530 sets up between two pole settings 522, and the diameter of butt wheel 530 is greater than pole setting 522 along the ascending size in the direction of perpendicular to horizontal pole 521, guarantees that the outer wall of butt wheel 530 can be respectively to both sides protrusion in pole setting 522, realizes the effective butt between butt wheel 530 and the 360 lateral walls of circumference holding tank. When driving piece 542 is in the shrink state, butt wheel 530 is located the axial middle part of circumference holding groove 360, does not contact with first antithetical couplet portion 300, avoids the two to take place to interfere, influences transmission performance.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 2, a first flat key 340 is disposed between the first shaft coupling portion 300 and the output shaft 110, and a second flat key 440 is disposed between the second shaft coupling portion 400 and the input shaft 210. The first coupling portion 300 and the output shaft 110 are circumferentially positioned through the first flat key 340, the output shaft 110 drives the first coupling portion 300 to rotate, the second coupling portion 400 and the input shaft 210 are circumferentially positioned through the second flat key 440, and the second coupling portion 400 transmits power transmitted from the first coupling portion 300 to the input shaft 210 to drive the driven member 200 to rotate. The above connection form is also convenient for realizing the relative movement of the first coupling part 300 and the output shaft 110 along the axial direction, and the sliding connection of the first coupling part 300 and the output shaft 110 is utilized to realize the function of separating the first coupling part 300 and the second coupling part 400 in time.

Further, in order to ensure the connection strength between the second coupling shaft portion 400 and the input shaft 210, the gap between the two is controlled to be 0.01-0.05 mm, and the two are tightly matched, so that the second coupling shaft portion 400 can be stably positioned on the input shaft 210 in the process of disengaging the first coupling shaft portion 300 and the second coupling shaft portion 400, and the second coupling shaft portion 400 is prevented from moving axially along with the first coupling shaft portion 300. In addition, a jackscrew may be disposed on an outer wall of the second coupling portion 400 in a penetrating manner, so as to realize tight pushing with the input shaft 210 and ensure relative stability of axial positions of the second coupling portion 400 and the input shaft 210.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 2, the first shaft portion 300 includes a first shaft body 310 and a first connecting plate 320; the first shaft 310 has a first central hole 330 and is disposed at an outer end of the output shaft 110; the first connecting plate 320 is disposed on a side of the first shaft 310 away from the driving member 100, and a first engaging tooth 350 is disposed on an end surface of the first connecting plate 320. The end surface diameter of the first connection disc 320 is larger than that of the first shaft body 310, and the first connection disc 320 and the second connection disc 420 can have a larger contact area, so that a stable transmission effect is achieved. The first engaging teeth 350 are provided in plural in a uniform arrangement on the outer circumference of the first connecting plate 320, and correspondingly, the second engaging teeth 450 are also provided in plural for achieving effective engagement with the first engaging teeth 350, thereby facilitating effective transmission of power.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 2, the second coupling portion 400 includes a second shaft body 410 and a second connecting plate 420, the second shaft body 410 is provided with a second central hole 430, and is configured to be sleeved on the outer end of the input shaft 210; the second connecting disc 420 is arranged on one side of the second shaft body 410 away from the driven part 200, and a second engaging tooth 450 for being clamped with the first engaging tooth 350 is arranged on the end face of the second connecting disc 420; the second center hole 430 extends into the second land 420 and a boss 460 for abutment with the outer end face of the input shaft 210 is provided in the second center hole 430. Also, the second coupling portion 400 has a structure similar to that of the first coupling portion 300 for achieving synchronous rotation with the first coupling portion 300. The boss 460 is provided to effectively limit the length of the input shaft 210 extending into the second coupling portion 400, and prevent the second coupling portion 400 from moving to the driven member 200.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, fig. 2 and fig. 5, the elastic abutting member 600 includes a fixing block 610 and an elastic element 620, the fixing block 610 is disposed at the periphery of the output shaft 110; one end of the elastic element 620 is connected with the end face of the fixed block 610, and the other end is abutted against the outer end face of the first coupling part 300; the main axis of the elastic element 620 is arranged parallel to the main axis of the output shaft 110. The fixing block 610 serves to provide a stable base surface for providing a reference for the installation of the elastic member 620, and when the abutting wheel 530 at the lower end of the lever 500 drives the first shaft portion 300 to move toward the driving member 100, the elastic member 620 is compressed, and the fixing block 610 provides an effective supporting force for the elastic member 620. The elastic member 620 may take the form of a compression spring, a spring plate, or a belleville spring.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, fig. 2 and fig. 5, the elastic abutting members 600 are provided with a plurality of elastic abutting members 600, and the plurality of elastic abutting members 600 are uniformly arranged at the periphery of the output shaft 110. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise. Elastic support piece 600 sets up a plurality ofly, is convenient for realize the circumferencial direction and to the effective shore of first antithetical couplet portion 300, avoids the axis that first antithetical couplet portion 300 circumference each point atress is uneven to cause crooked.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to fig. 3, the coupling transmission mechanism further includes a controller electrically connected to the driven member 200, a rotation speed sensor electrically connected to the controller is disposed on the input shaft 210, and the controller is electrically connected to the driving member 542. The rotation speed sensor is a sensor that converts the rotation speed of a rotating object into an electric quantity to be output. The rotation speed sensor belongs to an indirect measuring device. The core component of the revolution speed transducer adopts a magnetic sensitive resistor as a detection element, and then noise is reduced through a brand new signal processing circuit, so that the function is more complete. When the measured object is provided with magnetic conductive materials, such as magnetic steel, iron, electrical steel and the like, and rotates along with the measured object, the sensor outputs pulse signals related to the rotation frequency, so that the aim of sending out speed measurement or displacement detection is fulfilled.

When the rotation speed sensor detects that the rotation speed of the input shaft 210 is too high and the driven member 200 is overloaded, the signal is transmitted to the controller, the controller sends a control signal to the driving member 542 through a program preset in the controller, the output end of the driving member 542 extends outwards to drive the lever 500 to rotate around the rotating shaft 541, the effect of separating the first coupling shaft part 300 from the second coupling shaft part 400 is achieved by the aid of the abutting wheel 530 at the lower end of the lever 500, and serious damage to equipment is avoided.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Shaft coupling transmission structure, its characterized in that includes:

the driving part is provided with an output shaft, and a rotating shaft perpendicular to a main shaft of the output shaft is arranged on the outer side of the driving part;

a driven member provided with an input shaft having a main shaft collinear with a main shaft of the output shaft;

the first coupling shaft part is arranged on the output shaft and is in sliding connection with the output shaft along the axial direction of the output shaft, and a circumferential accommodating groove arranged around a main shaft of the first coupling shaft part is formed in the periphery of the first coupling shaft part;

the second coupling shaft part is arranged on the input shaft and is clamped with the first coupling shaft part;

the middle part of the lever is rotationally connected with the rotating shaft, the upper end of the lever is connected with a driving piece, the lower end of the lever is positioned in the circumferential accommodating groove and is used for being abutted against the side wall of the circumferential accommodating groove and pushing the first coupling part to be far away from the second coupling part, and the fixed end of the driving piece is rotationally connected with the driving piece; and

and one end of the elastic abutting part is fixedly connected with the output shaft, and the other end of the elastic abutting part abuts against the end face of the first coupling part close to one side of the driving part.

2. The coupling drive of claim 1 wherein said lever comprises:

the middle part of the rod body is rotationally connected with the rotating shaft;

the opening of the frame is downwards arranged at the lower end of the rod body and penetrates through the frame along the axial direction of the output shaft; and

and the abutting wheel is rotatably connected in the opening of the frame and is used for abutting against the side wall of the circumferential accommodating groove.

3. The coupling drive of claim 2 wherein said frame comprises:

the cross rod is arranged at the lower end of the rod body and is vertical to a main shaft of the rod body; and

two pole settings, respectively with the both ends of horizontal pole link to each other and to keeping away from one side of pivot extends.

4. The coupling transmission structure according to claim 3, wherein said abutment wheel is rotatably connected to the lower end of said vertical rod parallel to said cross rod, and the outer periphery of said abutment wheel is disposed to protrude outwardly from said vertical rod.

5. The coupling drive of claim 1 wherein a first flat key is provided between the first coupling portion and the output shaft and a second flat key is provided between the second coupling portion and the input shaft.

6. The coupling drive structure according to claim 5, wherein the first coupling portion comprises:

the first shaft body is provided with a first central hole and is used for sleeving the outer end of the output shaft;

the first connecting disc is arranged on one side, away from the driving part, of the first shaft body, and first meshing teeth are arranged on the end face of the first connecting disc.

7. The coupling drive of claim 6 wherein said second coupling portion comprises:

the second shaft body is provided with a second central hole and is used for being sleeved at the outer end of the input shaft; and

the second connecting disc is arranged on one side, away from the driven part, of the second shaft body, and second meshing teeth used for being clamped with the first meshing teeth are arranged on the end face of the second connecting disc;

the second center hole extends into the second connecting disc, and a boss used for being abutted to the outer end face of the input shaft is arranged in the second center hole.

8. A coupling transmission according to any one of claims 1-7, wherein said resilient abutment comprises:

the fixed block is arranged on the periphery of the output shaft; and

one end of the elastic element is connected with the end face of the fixed block, and the other end of the elastic element is abutted against the outer end face of the first coupling shaft part; the main shaft of the elastic element is arranged in parallel to the main shaft of the output shaft.

9. The coupling transmission structure according to claim 1, wherein said elastic abutting members are provided in plural numbers, and a plurality of said elastic abutting members are uniformly arranged on the outer periphery of said output shaft.

10. A coupler transmission structure according to any one of claims 1 to 7, wherein the coupler transmission mechanism further comprises a controller electrically connected with the driven member, a rotation speed sensor electrically connected with the controller is arranged on the input shaft, and the controller is electrically connected with the driving member.