CN210188986U - Torque transmission device, torque output device and battery replacement robot - Google Patents

Torque transmission device, torque output device and battery replacement robot Download PDF

Info

Publication number
CN210188986U
CN210188986U CN201920586670.4U CN201920586670U CN210188986U CN 210188986 U CN210188986 U CN 210188986U CN 201920586670 U CN201920586670 U CN 201920586670U CN 210188986 U CN210188986 U CN 210188986U
Authority
CN
China
Prior art keywords
torque
wrench
transmission
plate
torque transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201920586670.4U
Other languages
Chinese (zh)
Inventor
Yongyue Ma
马永跃
Nan Li
李楠
Xiaotao Tian
田小涛
Xikun Ding
丁习坤
Jun Liu
刘俊
Haiyan Lin
林海岩
Chunping Yuan
袁春萍
Yanling Ding
丁艳领
Jiangtao Zhu
朱江涛
Leiming Lu
卢雷明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NIO Co Ltd
Original Assignee
NIO Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NIO Co Ltd filed Critical NIO Co Ltd
Priority to CN201920586670.4U priority Critical patent/CN210188986U/en
Application granted granted Critical
Publication of CN210188986U publication Critical patent/CN210188986U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model belongs to the technical field of power transmission, specifically provide a moment of torsion transmission device, moment of torsion output device and trade electric robot. The utility model discloses aim at solving current trade electric robot and trade the problem that power transmission efficiency is low between motor and the box spanner when the execution trades electric operation. The utility model discloses a torque transmission device includes mount, universal joint and spanner, the first end of mount and the shell fixed connection of power device, the second end of mount is connected with the spanner, the universal joint includes torque input joint and torque output joint, torque input joint and the output shaft drive of power device are connected, torque output joint and spanner drive are connected; the connection between the mount and the wrench is arranged to allow the wrench to float in a direction perpendicular to the power transmission. The utility model discloses a torque transmission device also can transmit the moment of torsion for the spanner smoothly through the universal joint when the spanner takes place the skew around the axis, has guaranteed power transmission's between power device and the spanner efficiency.

Description

Torque transmission device, torque output device and battery replacement robot
Technical Field
The utility model belongs to the technical field of power transmission, specifically provide a moment of torsion transmission device, moment of torsion output device and trade electric robot.
Background
At present, two energy supplementing modes of electric automobiles are mainly provided, wherein one mode is that the electric automobiles are directly charged through a charging pile or a charging station; and the other is to replace the power battery with the dead power battery on the electric automobile with the fully charged power battery.
When an electric vehicle is used for replacing batteries, a power replacing robot is generally used for detaching a power battery with dead electricity on the electric vehicle and transferring the power battery into a battery storage cabinet for charging the power battery, and rotating a power battery with full electricity in the battery storage cabinet to the electric vehicle and installing the power battery on the electric vehicle.
In order to facilitate the replacement of the electric automobile, some electric automobiles adopt a chassis type battery replacement mode. When the battery is replaced, the battery replacing robot walks to the lower part of the electric automobile, and the socket wrench on the battery replacing robot is aligned with the bolt on the power battery and is inserted and connected together. A motor on the battery replacement robot drives a socket wrench and a bolt to rotate, and the power battery without power is detached from the electric automobile. The procedure is reversed when a full-charge battery is mounted on an electric vehicle, and will not be described in detail herein.
However, in the prior art, rigid connection is adopted between the socket wrench and the motor on the battery replacement robot, and due to production errors and position errors between the battery replacement robot and the electric vehicle, when the socket wrench is plugged together with a bolt on the electric vehicle, slight deviation often occurs around an axial direction, so that jamming easily occurs between the motor and the socket wrench during power transmission, and the power transmission efficiency is low.
Accordingly, there is a need in the art for a torque transmission device, a torque output device and a swapping robot to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem in the prior art, that is to say to solve the problem that the power transmission efficiency is low between the motor and the socket wrench when the current battery replacing robot executes the battery replacing operation, the utility model provides a torque transmission device, the torque transmission device comprises a fixing frame, a universal joint and a wrench, the first end of the fixing frame is fixedly connected with the housing of the power device, the second end of the fixing frame is connected with the wrench, the universal joint comprises a torque input joint and a torque output joint, the torque input joint is in driving connection with the output shaft of the power device, and the torque output joint is in driving connection with the wrench; the connection between the mount and the wrench is configured to allow the wrench to float in a direction perpendicular to the direction of power transmission.
In a preferred embodiment of the above torque transmission device, the torque transmission device further includes a transmission shaft, the transmission shaft is connected to the second end of the fixing frame in a manner of being floatable in the radial direction and fixed in the circumferential direction, and the transmission shaft is fixedly connected to the torque output joint through the first end thereof and fixedly connected to the wrench in the circumferential direction through the second end thereof.
In a preferred technical solution of the above torque transmission device, the fixing frame includes a first end plate fixedly connected to a housing of the power device, a second end plate provided with a through hole, and a side plate fixing the first end plate and the second end plate together; the transmission shaft penetrates through the through hole and is in clearance fit with the through hole.
In an optimal technical scheme of the torque transmission device, the torque transmission device further comprises a first stopping structure and a second stopping structure which are located on two sides of the second end plate, the first stopping structure is fixedly connected with or integrally manufactured with the transmission shaft, the second stopping structure is fixedly connected with or integrally manufactured with the transmission shaft, and the first stopping structure and the second stopping structure are used for preventing the transmission shaft from axially falling out of the through hole.
In a preferred embodiment of the torque transmission device, the first stop structure and the second stop structure are arranged to allow only one of the first stop structure and the second stop structure to abut against the second end plate at the same time, so as to allow the transmission shaft to float in the axial direction.
In a preferred technical solution of the above torque transmission device, the torque transmission device further includes a bearing radially disposed between the transmission shaft and the first stopping structure, an inner ring of the bearing is fixedly connected to the transmission shaft, and an outer ring of the bearing is fixedly connected to the first stopping structure.
In a preferred embodiment of the torque transmission device, the second stop structure is an annular structure and is fixedly connected with the transmission shaft in the radial direction through a bolt.
In a preferred technical solution of the above torque transmission device, the torque transmission device further includes a first return spring, a first end of the first return spring is connected to the fixing frame, a second end of the first return spring is connected to the first stopping structure and/or the second stopping structure, and the first return spring is used for restoring and holding the transmission shaft at an initial position.
In an optimal technical scheme of the torque transmission device, the return spring is a tension spring, a first end of the tension spring is hooked with the second end plate, and a second end of the tension spring is hooked with the first stop structure.
In the preferable technical scheme of the torque transmission device, one side of the first stop structure, which is far away from the second end plate, is provided with four supporting rods for hooking the tension spring, and the four supporting rods are distributed at equal intervals.
In a preferred embodiment of the above torque transmission device, the drive shaft and the wrench are axially slidably connected together.
In an optimal technical scheme of the torque transmission device, a square hole is formed in the second end of the transmission shaft, the wrench comprises a square column matched with the square hole, and the transmission shaft and the wrench are plugged together through the square hole and the square column.
In a preferred technical solution of the above torque transmission device, a threaded hole is provided on a side wall of the second end of the transmission shaft, a bar-shaped sinking groove is provided along a length direction of the square column, a screw is screwed into the threaded hole and inserted into the sinking groove, and the cooperation of the screw and the sinking groove allows the wrench to slide along an axial direction and can prevent the wrench from coming out of the square hole.
In a preferred embodiment of the above torque transmission device, the torque transmission device further includes a second return spring axially disposed between the transmission shaft and the wrench, and the second return spring is configured to provide a force to the wrench away from the transmission shaft.
In a preferred embodiment of the torque transmission device, the second return spring is a compression spring.
In a preferred technical solution of the above torque transmission device, the power device is a motor, an oil pump or an air pump; and/or the wrench includes a socket that mates with a bolt or nut.
Furthermore, the utility model also provides a torque output device, torque output device includes any one of above-mentioned preferred technical scheme torque transmission device and power device.
Additionally, the utility model also provides a trade electric robot, trade electric robot includes any one of the above-mentioned preferred technical scheme torque transmission device, the spanner is used for dismantling the power battery on the electric automobile and installs the power battery who dismantles on the electric automobile.
The technical scheme of the utility model is that in the preferred technical scheme of the utility model, through making the first end of mount and power device's shell fixed connection, make the second end of mount be connected with the spanner, make the moment of torsion input joint of universal joint and power device's output shaft drive be connected, make the moment of torsion output joint of universal joint with spanner drive is connected, and will the mount with be connected between the spanner sets to the permission the spanner floats along the direction of perpendicular to power transmission for torque transmission device also can transmit the moment of torsion smoothly for the spanner through the universal joint when the spanner takes place to squint around the axis, has guaranteed power transmission's efficiency between power device and the spanner. As will be appreciated by those skilled in the art, a universal joint is a mechanism for achieving variable angle power transmission.
Preferably, the fixing frame comprises a first end plate fixedly connected with the shell of the power device, a second end plate provided with a through hole and a side plate for fixing the first end plate and the second end plate together. The utility model discloses a torque transmission device still includes the transmission shaft, is located the first backstop structure and the second backstop structure of second end plate both sides, the transmission shaft passes the through-hole and with through-hole clearance fit, so that the transmission shaft can be along radially floating. Furthermore, the transmission shaft is fixedly connected with the torque output joint through a first end of the transmission shaft, and the transmission shaft is fixedly connected with the wrench circumferentially through a second end of the transmission shaft. The first stopping structure is rotatably connected with the transmission shaft through a bearing and is also connected with the second end plate through a first return spring, and the second stopping structure is fixedly connected with the transmission shaft through a bolt. And the first stop structure and the second stop structure are arranged to allow only one to abut against the second end plate at the same time so as to allow the transmission shaft to float in the axial direction. The utility model discloses torque transmission device with above-mentioned structure not only can make the transmission shaft float in the axial, can also make the transmission shaft upwards float in footpath, simultaneously based on the axial float with radial ascending unsteady, the transmission shaft can also be around the axial swing.
Scheme 1, a torque transmission device, characterized in that, the torque transmission device includes a mount, a universal joint and a wrench,
the first end of the fixing frame is fixedly connected with the shell of the power device, the second end of the fixing frame is connected with the wrench,
the universal joint comprises a torque input joint and a torque output joint, the torque input joint is in driving connection with an output shaft of the power device, and the torque output joint is in driving connection with the wrench;
the connection between the mount and the wrench is configured to allow the wrench to float in a direction perpendicular to the direction of power transmission.
Solution 2, the torque transmission device according to solution 1, further comprising a transmission shaft connected with the second end of the fixed frame in a manner of floating along the radial direction and fixing along the circumferential direction,
the transmission shaft is fixedly connected with the torque output joint through a first end of the transmission shaft and is fixedly connected with the wrench in the circumferential direction through a second end of the transmission shaft.
Scheme 3, the torque transmission device according to scheme 2, wherein the mount includes a first end plate fixedly connected to a housing of the power device, a second end plate provided with a through hole, and a side plate fixing the first end plate and the second end plate together;
the transmission shaft penetrates through the through hole and is in clearance fit with the through hole.
Scheme 4, the torque transmission device according to scheme 3, further comprising a first stopping structure and a second stopping structure located at two sides of the second end plate, wherein the first stopping structure is fixedly connected with or integrally formed with the transmission shaft, the second stopping structure is fixedly connected with or integrally formed with the transmission shaft,
the first stopping structure and the second stopping structure are used for preventing the transmission shaft from axially falling out of the through hole.
The torque transmission device according to claim 5 or 4, wherein the first stop structure and the second stop structure are arranged to allow only one to abut against the second end plate at a time so as to allow the transmission shaft to float in the axial direction.
Solution 6 the torque transmission device according to solution 5, further comprising a bearing disposed radially between the drive shaft and the first stop structure,
the inner ring of the bearing is fixedly connected with the transmission shaft, and the outer ring of the bearing is fixedly connected with the first stopping structure.
The torque transmission device according to claim 7 or 6, wherein the second stopper structure is an annular structure and is fixedly connected to the transmission shaft by a bolt in a radial direction.
The torque transmission device according to claim 8 or 6, further comprising a first return spring, wherein a first end of the first return spring is connected to the fixing frame, a second end of the first return spring is connected to the first stopping structure and/or the second stopping structure, and the first return spring is used for restoring and maintaining the transmission shaft at an initial position.
Scheme 9, according to scheme 8 torque transmission device, characterized in that, reset spring is the extension spring, the first end of extension spring with the second end plate articulates, the second end of extension spring with first backstop structure articulates.
Scheme 10, according to scheme 9 torque transmission device, its characterized in that, first backstop structure is kept away from one side of second end plate is provided with four and is used for the colluding the bracing pieces of extension spring, four bracing pieces are equidistant to be distributed.
Solution 11 the torque transmission device according to any one of solution 2 to solution 10, wherein the drive shaft and the wrench are axially slidably connected together.
Scheme 12, according to scheme 11 the torque transmission device, characterized in that, be provided with the quad slit on the second end of transmission shaft, the spanner includes with the quad slit matched's square post, the transmission shaft with the spanner passes through the quad slit with the square post plug is in the same place.
Scheme 13 and the torque transmission device according to scheme 12, wherein a threaded hole is formed in a side wall of the second end of the transmission shaft, a strip-shaped sinking groove is formed in the square column along the length direction, a screw is screwed into the threaded hole and inserted into the sinking groove, and the matching of the screw and the sinking groove allows the wrench to slide in the axial direction and can prevent the wrench from coming out of the square hole.
The torque transmission device according to claim 14 or 13, further comprising a second return spring axially disposed between the drive shaft and the wrench, the second return spring being configured to provide a force to the wrench away from the drive shaft.
The torque transmission device according to claim 15 or 14, wherein the second return spring is a compression spring.
Scheme 16, the torque transmission device according to any one of schemes 1 to 10, wherein the power device is an electric motor, an oil pump or an air pump;
and/or the wrench includes a socket that mates with a bolt or nut.
A torque output device according to claim 17, comprising the torque transmission device and the power plant of any one of claims 1 to 16.
Scheme 18, the battery replacement robot includes the torque transmission device of any one of schemes 1 to 16, and the wrench is used for detaching a power battery on an electric vehicle and installing the detached power battery on the electric vehicle.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a side view of a torque output device of the present invention;
fig. 2 is a front view of the torque output device of the present invention;
fig. 3 is an exploded view of the torque output device of the present invention;
FIG. 4 is a partial cross-sectional view of the torque output device of the present invention;
fig. 5 is a partially enlarged view of the torque output device of fig. 4.
List of reference numerals:
1. a motor;
2. a fixed mount; 21. a first end plate; 22. a second end plate; 221. a through hole; 23. a side plate;
3. a universal joint; 31. a torque input joint; 32. a torque output joint;
4. a wrench; 41. a square column; 412. sinking a groove; 42. a sleeve;
5. a drive shaft; 51. a square hole; 52. threaded hole
6. A first stop structure; 61. a support bar;
7. a second stop structure; 71. a first annular structure; 72. a second annular structure;
8. a bearing;
9. a tension spring;
10. a pressure spring;
11. and (4) bolts.
Detailed Description
It should be understood by those skilled in the art that the embodiments in this section are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. For example, although the components in the drawings are illustrated in a certain proportional relationship, the proportional relationship is not constant, and those skilled in the art can make adjustments as needed to adapt to specific applications, and the adjusted technical solution will still fall into the protection scope of the present invention.
It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicating the directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Further, it should be noted that, in the description of the present invention, the bolt may be used in cooperation with the nut, or may be used alone.
As shown in fig. 1 and fig. 2, the torque output device of the present invention mainly includes a motor 1 and a torque transmission device drivingly connected to the motor 1. The torque transmission device is used to transmit the torque output by the motor 1 to a target mechanism, which may be a bolt or a nut. It will be appreciated by those skilled in the art that the electric machine 1 may also be replaced by any other feasible power means, such as an oil or air pump, in case it is capable of providing torque to the torque transmission means.
With reference to fig. 1 and 2, the torque transmission device of the present invention mainly includes a fixing frame 2, a universal joint 3, and a wrench 4. Wherein, the first end of the fixing frame 2 (the lower end of the fixing frame 2 in fig. 2) is fixedly connected with the shell of the motor 1, and the second end of the fixing frame 2 (the upper end of the fixing frame 2 in fig. 2) is connected with the wrench 4. The connection between the fixed frame 2 and the wrench 4 is provided to allow the wrench 4 to float in a direction perpendicular to the power transmission (up-down direction in fig. 2) so as to allow the wrench 4 to float in a radial direction (left-right direction in fig. 2).
As shown in fig. 3, the universal joint 3 includes a torque input joint 31 and a torque output joint 32, the torque input joint 31 is drivingly connected to the output shaft of the motor 1, and the torque output joint 32 is drivingly connected to the wrench 4. It will be appreciated by those skilled in the art that the torque input joint 31 and the output shaft of the motor 1 may be connected together in any feasible manner, such as a spline connection, a flat key connection, a bolt connection, etc. Illustratively, an inner key groove is arranged on the torque input joint 31, an outer key groove is arranged on the output shaft of the motor 1, and the torque input joint 31 and the output shaft of the motor 1 are coaxially connected together through a flat key. It can be understood by those skilled in the art that the universal joint 3 of the present invention can also be a universal joint with any number of joints, such as three, four, five, etc.
With continued reference to fig. 3, the fixing frame 2 mainly includes a first end plate 21 fixedly connected to the housing (specifically, the flange) of the motor 1, a second end plate 22 provided with a through hole 221, and a side plate 23 fixing the first end plate 21 and the second end plate 22 together. Specifically, the first end plate 21 is fixedly connected with the flange of the motor 1 through bolts, threaded holes are further formed in the first end plate 21, through holes aligned with each other are formed in the second end plate 22 and the side plate 23, and the bolts are screwed with the threaded holes in the first end plate 21 after passing through the through holes in the second end plate 22 and the side plate 23, so that the first end plate 21, the second end plate 22 and the side plate 23 are fixedly connected together. Alternatively, one skilled in the art may integrally form the first end plate 21, the second end plate 22 and the side plate 23, or integrally form two adjacent end plates 21, 22 and 23.
As shown in fig. 1 to 3, the torque transmission device of the present invention further includes a transmission shaft 5, a first stopping structure 6, a second stopping structure 7, a bearing 8, a tension spring 9 (which is an example of a first return spring), and a compression spring 10 (which is an example of a second return spring).
As shown in fig. 3 to 5, after the transmission shaft 5 passes through the through hole 221 on the second end plate 22, the first end (the lower end of the transmission shaft 5 in fig. 4) is fixedly connected to the torque output joint 32, and the second end (the upper end of the transmission shaft 5 in fig. 4) is fixedly connected to the wrench 4 in the circumferential direction. Wherein, clearance fit is adopted between the transmission shaft 5 and the through hole 221, so that the transmission shaft 5 can freely float along the radial direction. The size of the gap can be set to any value according to actual needs, for example, 1mm, 2mm, 3mm, and the like. It will be appreciated by those skilled in the art that the torque output joint 32 and the first end of the drive shaft 5 may be connected together in any feasible manner, such as a splined connection, a flat keyed connection, a bolted connection, etc. Illustratively, the torque output joint 32 is provided with an inner key groove, the first end of the transmission shaft 5 is provided with an outer key groove, and the torque output joint 32 and the first end of the transmission shaft 5 are coaxially connected together through a flat key.
As shown in fig. 4 and 5, a square hole 51 is formed at the second end of the driving shaft 5, and a screw hole 52 is formed at a side wall of the second end of the driving shaft 5.
As shown in fig. 1 to 3, the wrench 4 includes a square post 41 connected to the drive shaft 5 and a socket 42 for mating with a bolt or nut. Wherein, the square column 41 is provided with a strip-shaped sinking groove 412 along the length direction.
With continued reference to fig. 4 and 5, in the installed state, the square post 41 is inserted into the square hole 51, the bolt 11 is screwed into the threaded hole 52 and inserted into the countersunk groove 412, and the cooperation of the bolt 11 and the countersunk groove 412 allows the wrench 4 to slide in the axial direction and prevents the wrench 4 from coming out of the square hole 51. Preferably, the square column 41 and the square hole 51 are in clearance fit, so that the square column 41 can swing around an axis in the square hole 51. The size of the gap can be set to any value according to actual needs, for example, 1mm, 2mm, 3mm, and the like.
With continued reference to fig. 4 and 5, a compression spring 10 is disposed axially between the drive shaft 5 and the wrench 4, the compression spring 10 being used to provide a force to the wrench 4 away from the drive shaft 5. In the case of a wrench 4 which can be acted upon with a force directed away from the drive shaft 5, the compression spring 10 can also be replaced by any other second restoring spring, such as an air spring, which is suitable.
With continued reference to fig. 3-5, the first stop structure 6 is located on the lower side of the second end plate 22 in fig. 4, the second stop structure 7 is located on the upper side of the second end plate 22 in fig. 4, and the first stop structure 6 is coaxially and fixedly connected with the transmission shaft 5, and the second stop structure 7 is rotatably connected with the transmission shaft 5. Specifically, a through hole is formed in the first stopping structure 6, the bearing 8 is clamped in the through hole, an outer ring of the bearing 8 is fixedly connected with the first stopping structure 6 in an interference fit mode, and an inner ring of the bearing 8 is sleeved on the transmission shaft 5 and is fixedly connected with the transmission shaft 5 in an interference fit mode. Alternatively, the bearing 8 and the transmission shaft 5 and/or the first stop structure 6 may be fixedly connected together by transition fit by those skilled in the art. As can be seen from fig. 5, the first stopping structure 6 and the transmission shaft 5 are further provided with a shoulder respectively abutting against the outer ring and the inner ring of the bearing 8, and the shoulder on the transmission shaft 5 is located between the shoulder on the first stopping structure 6 and the second end plate 22.
As shown in fig. 5, the second stop structure 7 is a ring-shaped structure and is fixedly connected with the transmission shaft 5 in the radial direction by bolts. Specifically, a plurality of threaded holes are formed in the circumferential direction of the transmission shaft 5, a plurality of through holes are formed in the circumferential surface of the second stopping structure 7, and bolts are screwed with the threaded holes after passing through the through holes, so that the transmission shaft 5 and the second stopping structure 7 are fixedly connected together. Furthermore, the second stop structure 7 can be made integrally with the transmission shaft 5 as required by those skilled in the art.
With reference to fig. 3, the first stopping structure 6 is further provided with four supporting rods 61 uniformly distributed around the axis on the side away from the second end plate 22, and each supporting rod 61 is further provided with a hook.
As shown in fig. 5, the side of the second end plate 22 adjacent to the first stop structure 6 is also provided with four hooks.
As shown in fig. 1, 2 and 5, in an assembled state, one end of the tension spring 9 is hooked on the hook on the support rod 61, and the other end of the tension spring 9 is hooked on the hook on the second end plate 22, so that the first stopper 6 is pulled toward the second end plate 22.
As shown in fig. 5, in the assembled state, the first stop structure 6 and the second stop structure 7 allow only one to abut against the second end plate 22 at a time, so as to allow the transmission shaft 5 to float in the axial direction. That is, the thickness between the first stop structure 6 and the second stop structure 7 is greater than the thickness of the second end plate 22.
It will be understood by those skilled in the art that the number of the support rods 61 and the tension springs 9 is not limited to four, but may be any feasible number, such as two, three, five, etc. Also, the plurality of support rods 61 need not be equally spaced, but may be unequally spaced.
The operation principle of the torque output device of the present invention will be briefly described with reference to fig. 4 and 5.
When the universal joint is used, the sleeve 42 of the wrench 4 is sleeved on the nut or the bolt, then the motor 1 starts to work, the output shaft of the motor 1 drives the universal joint 3, the transmission shaft 5 and the wrench 4 to rotate, and the nut or the bolt is screwed. If the nut or bolt is not axially aligned with the socket 42, the wrench 4 will swing in the radial direction after the socket 42 is fitted over the nut or bolt, and the driving shaft 5 will be moved and swung in the radial and axial directions, and the power transmission between the motor 1 and the driving shaft 5 will not be hindered (or will be hindered only negligibly) by the presence of the universal joint 3.
As can be appreciated by those skilled in the art, the present invention allows the wrench 4 to swing around the axis, allows the transmission shaft 5 to move along the radial direction and the axial direction, and allows the socket 42 to be fitted to the bolt or the nut when the wrench 4 is not aligned with the bolt or the nut in the axial direction, and allows the motor 1 to smoothly transmit the torque to the wrench 4 through the universal joint 3 and the transmission shaft 5, thereby ensuring the efficiency of power transmission.
In another possible embodiment of the invention, which differs from the above-described preferred embodiment, the positions of the first stop structure 6 and the second stop structure 7 are exchanged, i.e. the first stop structure 6 is arranged on the upper side of the second end plate 22 in fig. 4, and the second stop structure 7 is arranged on the lower side of the second end plate 22 in fig. 4.
Furthermore, the utility model also provides a trade electric robot, this trade electric robot includes foretell moment of torsion transmission device and/or moment of torsion output device's whole technical characteristics or partial technical characteristics.
So far, the technical solution of the present invention has been described with reference to the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, a person skilled in the art can make equivalent changes or substitutions to the related technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims (18)

1. A torque transmission device is characterized by comprising a fixed frame, a universal joint and a wrench,
the first end of the fixing frame is fixedly connected with the shell of the power device, the second end of the fixing frame is connected with the wrench,
the universal joint comprises a torque input joint and a torque output joint, the torque input joint is in driving connection with an output shaft of the power device, and the torque output joint is in driving connection with the wrench;
the connection between the mount and the wrench is configured to allow the wrench to float in a direction perpendicular to the direction of power transmission.
2. The torque transmission device of claim 1, further comprising a drive shaft coupled to the second end of the mount in a radially floatable, circumferentially fixed manner,
the transmission shaft is fixedly connected with the torque output joint through a first end of the transmission shaft and is fixedly connected with the wrench in the circumferential direction through a second end of the transmission shaft.
3. The torque transmission device according to claim 2, wherein the fixing bracket includes a first end plate fixedly connected to a housing of the power unit, a second end plate provided with a through hole, and a side plate fixing the first end plate and the second end plate together;
the transmission shaft penetrates through the through hole and is in clearance fit with the through hole.
4. The torque transmission device of claim 3, further comprising a first stop structure and a second stop structure on either side of the second end plate, the first stop structure being fixedly connected to or integrally formed with the drive shaft, the second stop structure being fixedly connected to or integrally formed with the drive shaft,
the first stopping structure and the second stopping structure are used for preventing the transmission shaft from axially falling out of the through hole.
5. The torque transmission device of claim 4, wherein the first stop structure and the second stop structure are arranged to allow only one to abut the second end plate at a time so as to allow the drive shaft to float axially.
6. The torque transmitting device of claim 5, further comprising a bearing disposed radially between the drive shaft and the first stop structure,
the inner ring of the bearing is fixedly connected with the transmission shaft, and the outer ring of the bearing is fixedly connected with the first stopping structure.
7. The torque transmitting device of claim 6, wherein the second stop structure is an annular structure and is fixedly connected to the drive shaft by a bolt in a radial direction.
8. The torque transmission device according to claim 6, further comprising a first return spring having a first end connected to the holder and a second end connected to the first and/or second stop structure, the first return spring being adapted to restore and retain the drive shaft in an initial position.
9. The torque transmitting device of claim 8, wherein the return spring is a tension spring having a first end hooked to the second end plate and a second end hooked to the first stop structure.
10. The torque transmission device according to claim 9, wherein four support rods for hooking the tension spring are arranged on one side of the first stopping structure away from the second end plate, and the four support rods are distributed at equal intervals.
11. The torque transmission device according to any one of claims 2 to 10, wherein the drive shaft and the wrench are axially slidably connected together.
12. The torque transmission device of claim 11, wherein the second end of the drive shaft has a square aperture disposed thereon, wherein the wrench includes a square post that mates with the square aperture, and wherein the drive shaft and the wrench are inserted together through the square aperture and the square post.
13. The torque transmission device according to claim 12, wherein a threaded hole is formed in a side wall of the second end of the transmission shaft, the square post is provided with a bar-shaped sunken groove along a length direction, a screw is screwed into the threaded hole and inserted into the sunken groove, and the screw and the sunken groove are matched to allow the wrench to slide along an axial direction and prevent the wrench from falling out of the square hole.
14. The torque transmission device of claim 13, further comprising a second return spring disposed axially between the drive shaft and the wrench, the second return spring for providing a force to the wrench away from the drive shaft.
15. The torque transmission device of claim 14, wherein the second return spring is a compression spring.
16. The torque transmission device according to any one of claims 1 to 10, wherein the power device is an electric motor, an oil pump or an air pump;
and/or the wrench includes a socket that mates with a bolt or nut.
17. A torque output device comprising the torque transmission device of any one of claims 1 to 16 and a power plant.
18. A charging robot, comprising the torque transmission device as claimed in any one of claims 1 to 16, wherein the wrench is used for detaching the power battery from the electric vehicle and installing the detached power battery on the electric vehicle.
CN201920586670.4U 2019-04-26 2019-04-26 Torque transmission device, torque output device and battery replacement robot Active CN210188986U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920586670.4U CN210188986U (en) 2019-04-26 2019-04-26 Torque transmission device, torque output device and battery replacement robot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920586670.4U CN210188986U (en) 2019-04-26 2019-04-26 Torque transmission device, torque output device and battery replacement robot

Publications (1)

Publication Number Publication Date
CN210188986U true CN210188986U (en) 2020-03-27

Family

ID=69882140

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920586670.4U Active CN210188986U (en) 2019-04-26 2019-04-26 Torque transmission device, torque output device and battery replacement robot

Country Status (1)

Country Link
CN (1) CN210188986U (en)

Similar Documents

Publication Publication Date Title
CN104526716B (en) A kind of industrial robot energy-storage economical type gravity balance device
CN210188986U (en) Torque transmission device, torque output device and battery replacement robot
CN210188987U (en) Torque transmission device, torque output device and battery replacement robot
CN102785208B (en) A kind ofly determine torque force device for pneumatic impact spanner
CN210524382U (en) Torque transmission device, torque output device and battery replacement robot
CN104175329B (en) Hollow cascade machine mechanical arm modularized joint
WO2018210014A1 (en) Tool for locking and dismounting bolt and battery changing robot
CN110566657A (en) support frock that supplementary bearing was changed
US10578165B2 (en) Coupling
CN106089414A (en) Electromotor and the attachment structure of electromotor
CN204209613U (en) The device of online replacing speed regulation type hydrodynamic coupler executing agency
CN207542938U (en) Driving device
CN213470188U (en) Dismounting device
CN216231642U (en) Driving device for balance cube robot
CN215337963U (en) Electric stationary hoe
CN214823734U (en) Self-adaptive wall-climbing robot
CN208749846U (en) A kind of unit withdrawal straightening machine idler roller socket type drum type gear coupling
CN209041364U (en) Shaft coupling wheel hub and shaft coupling
US11125276B2 (en) Output shaft component with elastic body
CN110552851B (en) Manual barring gear
CN216507745U (en) Electric vehicle driving half shaft
CN212052479U (en) Spring connecting structure of barrier gate movement, spring pull arm mechanism and barrier gate
CN102644580B (en) Mechanical sealing structure suitable for compressor
CN209354419U (en) A kind of shaft coupling for water pump
CN211167351U (en) Underwater load rejection device and underwater equipment

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant