CN112727939B

CN112727939B - Automatic centering anti-deviation coupler

Info

Publication number: CN112727939B
Application number: CN202110165518.0A
Authority: CN
Inventors: 曹安港; 陈思洋; 李伟; 王基月
Original assignee: Zhengzhou University of Science and Technology
Current assignee: Zhengzhou University of Science and Technology
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2021-10-26
Anticipated expiration: 2041-02-06
Also published as: CN112727939A

Abstract

The invention relates to a self-centering anti-deviation coupler, which effectively solves the problem that the existing coupler can not reliably transmit power due to the axial deviation of two shafts; the technical scheme comprises the following steps: this shaft coupling can realize carrying out the automatic centering between driving shaft and the driven shaft when installing, promptly, can be accurate make the axle center collineation of driving shaft and driven shaft and install fast, when equipment operation a period back motor shaft produced radial run-out, can make the transition plectane that is in by spacing state at the beginning produce between first connecting axle, second connecting axle and remove to the radial beat of cooperation motor shaft, even the motor shaft radial run-out is great also can realize better moment transmission effect.

Description

Automatic centering anti-deviation coupler

Technical Field

The invention relates to the technical field of mechanical transmission, in particular to an automatic centering anti-deviation coupler.

Background

The coupling is a mechanical part used for connecting a transmission shaft and a driven shaft to enable the two shafts to jointly select to transmit torque, has the functions of buffering, damping and improving the dynamic performance in a transmission mechanism in power transmission, consists of two half parts which are respectively connected with a driving shaft and the driven shaft, and a plurality of general power machines (motors) are connected with a working machine (load) by means of the coupling;

because the processing precision error between the stator and the rotor inside the motor further causes a gap between the stator and the rotor, or a certain installation error exists between the driving shaft and a rotating bearing matched with the driving shaft, the phenomenon that the transmission shaft can generate radial run-out after the long-time work of a mechanical transmission part is further caused, and the run-out amplitude of the position far away from the motor (the bearing) is larger, most of the existing couplers only play a role in torque transmission (namely, two ends of the couplers are respectively connected with the motor and a load in a hard mode), the coupler can not cope with the situation when the situation occurs, if the motor and the transmission part work for a long time under the state, the transmission shaft part and the motor are seriously abraded, and the service life of the motor and the transmission part is greatly reduced;

secondly, the motor and the transmission part can generate larger noise and generate heating due to serious abrasion when working for a long time;

in view of the above we provide a self-centering anti-drift coupling that solves the above problems.

Disclosure of Invention

In view of the above situation, the present invention provides an automatic centering anti-deviation coupler, which can realize automatic centering between a driving shaft and a driven shaft when being installed, that is, can accurately make the axes of the driving shaft and the driven shaft collinear and perform quick installation, and when a motor shaft generates radial run-out after equipment runs for a period of time, can make a transition circular plate which is initially in a limited state generate movement between a first connecting shaft and a second connecting shaft so as to match the radial run-out of the motor shaft, so that a good torque transmission effect can be realized even if the radial run-out of the motor shaft is large.

A kind of automatic centering anti-skew coupling, including two first connecting axles, second connecting axles set up horizontally at intervals, characterized by that, said first connecting axle, second connecting axle are equipped with the concrete chute extending along its radial direction separately to one side opposite to it, said first connecting axle, second connecting axle have transition plectane and transition plectane horizontal both sides have slide block cooperating with concrete chute separately, two said slide block form 90 degrees to set up each other, said transition plectane horizontal both sides have with slide block horizontal slip cooperating spacing post and two have spacing hole cooperating with spacing post in the concrete chute separately;

the two transverse sides of the transition circular plate are respectively provided with a rubber circular plate which is coaxial with the transition circular plate, the two transverse sides of the transition circular plate are respectively provided with a trigger ring which is contacted with the rubber circular plate, a trigger spring is connected between the trigger ring and the transition circular plate, the trigger ring is connected with a positioning device through a transmission device, the two limiting columns are connected with an energy storage device which is arranged in the transition circular plate, and the energy storage device is connected with the positioning device which is arranged in the transition circular plate;

the slider and the spout sliding fit position that corresponds with it are equipped with respectively along a plurality of leading wheels and leading wheel and the slider of perpendicular to spout lateral wall direction slidable mounting and are connected with guide spring between, it can realize to be equipped with thrustor and thrustor between leading wheel and the spacing post that corresponds with it: the guide wheel is synchronously driven to move outwards along with the shrinkage of the limiting column towards the inside of the sliding block.

Preferably, be equipped with the rectangle chamber in the transition plectane, two spacing post just arranges rectangle intracavity one end in opposite directions and rotates respectively and installs the connecting rod, and energy memory includes: the other ends of the two connecting rods are respectively rotatably provided with a moving rod which is vertically and slidably arranged in the transition circular plate, a moving spring is connected between the moving rod and the transition circular plate, the positioning device comprises positioning plates which are positioned on two transverse sides of the moving rod and are transversely and slidably arranged in the transition circular plate, positioning holes matched with the positioning plates are respectively arranged on two transverse sides of the positioning plates and the transition circular plate, and the positioning plates are connected with a transmission device.

Preferably, the horizontal both sides of transition plectane are equipped with the circular chamber with the axle center respectively and trigger the ring and install in the transition plectane through the slide bar lateral sliding with an integral connection, trigger spring connects and arranges the rectangle intracavity one end in and between the excessive plectane in the slide bar, transmission includes the drive rack that fixed mounting set up in the vertical both sides of locating plate and vertical interval, lies in to cooperate jointly between vertical homonymy matched with two drive racks to have the rotation to install the drive gear in the rectangle intracavity, drive gear is connected with through drive pulley group and rotates the unblock gear of installing in the rectangle intracavity and unblock gear is respectively by the trigger ring drive that corresponds with it.

Preferably, the diameter of the circular cavity is smaller than that of the rubber circular plate.

Preferably, there are leading truck and a plurality of leading wheels rotation to install on the leading truck in the slider along the direction slidable mounting that the perpendicular to corresponds the spout lateral wall with it, slider and the spout lateral wall slidable mounting position that corresponds with it are equipped with the perforation with leading wheel matched with, thrustor includes fixed mounting in the triangle swash plate of leading truck towards spacing post one end, spacing post axial both sides are equipped with respectively and trigger the sloping block with triangle-shaped plate matched with.

Preferably, one side of the triangular sloping plate, which is close to the transition circular plate, is integrally provided with an extension plate.

Preferably, longitudinal sliding installs on the leading truck and is connected with clamping spring between mounting bracket and the leading truck, fixed mounting has on the mounting bracket and has and leading wheel matched with loading board and loading board through bearing spring connection with leading wheel matched with to touch panel, an organic whole is equipped with drive rack and drive rack connection and has set up the detection drive arrangement on the leading truck on the mounting bracket, it can satisfy to detect drive arrangement: according to the size of the rotation stroke of the guide wheel, the mounting frame is driven by the driving rack to move a corresponding distance towards the direction close to the guide wheel.

Preferably, rotate on the leading truck and install with the coaxial pivoted synchronizing gear of one of them leading wheel and synchronizing gear meshing have the gear wheel of rotation installation on the leading truck, detect drive arrangement and include: the driving circular plate is coaxially rotated by the large gear, the driving circular plate is radially provided with the driving plate, the driven circular plate is transversely installed on the guide frame in a rotating mode at intervals, driven plates matched with the driving plate are arranged on the driven circular plate, the two driven plates are respectively arranged on the two longitudinal sides of the driving plate, and the two driven circular plates are respectively connected with a one-way driving device and connected with the driving rack.

Preferably, the unidirectional drive means comprises: two driven plectane is connected with the driven pulley group respectively, and one of them driven pulley group drive has to rotate the first gear of installing on the leading truck and first gear engagement has to rotate the first one-way gear of installing on the leading truck, it has the second one-way gear and the second one-way gear coaxial fixed mounting who matches with another driven pulley group to rotate on the leading truck has a driving barrel, the driving barrel is through the driven pulley group drive that corresponds with it.

The beneficial effects of the technical scheme are as follows:

(1) when the shaft coupling is installed, the driving shaft and the driven shaft can be automatically centered, namely, the axes of the driving shaft and the driven shaft can be accurately collinear and can be quickly installed, when the motor shaft or the transmission shaft generates radial runout after the equipment runs for a period of time, the transition circular plate which is initially in a limited state can move between the first connecting shaft and the second connecting shaft so as to match the condition that the axes of the first connecting shaft and the second connecting shaft deviate due to the radial runout of the motor shaft, namely, when the axes of the first connecting shaft and the second connecting shaft deviate, the stable and reliable torque transmission effect can be realized;

(2) guide wheels are arranged at the sliding fit parts of the transition circular plate and the first connecting shaft and the second connecting shaft respectively, so that when the transition circular plate moves between the first connecting shaft and the second connecting shaft, the abrasion (sliding friction is regarded as rotating friction) to the sliding fit parts of the first connecting shaft and the second connecting shaft and the transition circular plate is reduced by the contact of the guide wheels with the first connecting shaft and the second connecting shaft, and the service life of the first connecting shaft and the second connecting shaft and the transition circular plate can be prolonged;

(3) preferably, in this scheme, can be according to the size of motor shaft or transmission shaft range of beating and corresponding exert certain rotation resistance for the leading wheel, be equivalent to increase the removal frictional resistance of transition plectane between first, two connecting axles, when motor shaft or transmission shaft range of beating are too big, the rotation resistance of leading wheel is correspondingly increased, and then offset the great condition of axle center skew that leads to because of the range of beating is too big by motor shaft or transmission shaft, when motor shaft or transmission shaft range of beating are less, the corresponding rotation resistance that reduces the leading wheel, satisfy the range of beating not great condition under, make transition plectane can smoothly move between first, two connecting axles.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of another perspective of the overall structure of the present invention;

FIG. 3 is a schematic diagram of the first and second connecting shafts separated from the transition circular plate according to the present invention;

FIG. 4 is a schematic cross-sectional view of the first and second connecting shafts of the present invention;

FIG. 5 is a schematic cross-sectional view from another perspective of the first and second connecting shafts of the present invention;

FIG. 6 is a schematic sectional view of the internal structure of the transition circular plate according to the present invention;

FIG. 7 is a schematic view of the connection between the movable rod and the movable spring according to the present invention;

FIG. 8 is a schematic diagram of the separation of the rubber circular plate and the transition circular plate according to the present invention;

FIG. 9 is a schematic view of the positioning plate and the movable rod of the present invention;

FIG. 10 is a schematic view of two of the limiting posts of the present invention retracted into the slider;

FIG. 11 is a schematic view of the present invention showing the two trigger rings separated from the transition circular plate;

FIG. 12 is a schematic diagram of the separation of the rubber circular plate, the trigger ring and the transition circular plate according to the present invention;

FIG. 13 is an enlarged view of the structure at A of the present invention;

FIG. 14 is a schematic view of the relationship between the triangular sloping plate and the trigger sloping block;

FIG. 15 is a schematic view of the relationship between the bearing plate, the contact plate and the guide wheel;

FIG. 16 is an enlarged view of the structure at B of the present invention;

FIG. 17 is a schematic structural diagram of a detection driving device according to the present invention;

FIG. 18 is a schematic top view of the inspection driving device of the present invention;

FIG. 19 is a schematic view of the first and second connecting shafts being eccentric according to the present invention;

FIG. 20 is a schematic view of the slider of the present invention in contact with two abutting rubber plates;

FIG. 21 is a schematic view of the invention with the guide wheels extended outwardly.

Detailed Description

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings, in which reference is made to the accompanying drawings, wherein like reference numerals refer to like elements throughout.

Embodiment 1, this embodiment provides an automatic centering anti-deviation coupler, as shown in fig. 1, including two first connecting shafts 1 and two second connecting shafts 2 arranged at intervals in the transverse direction, wherein the first connecting shafts 1 and the second connecting shafts 2 are respectively connected with a driving shaft (motor shaft) and a driven shaft (loading machine), and one ends of the first connecting shafts and the second connecting shafts, which are opposite to each other, are provided with square holes for realizing the connection between the driving shaft and the driven shaft and the transmission of power, and is characterized in that one sides of the first connecting shafts 1 and the second connecting shafts 2, which are opposite to each other, are respectively provided with a sliding chute 3 extending along the radial direction thereof, a transition circular plate 4 is arranged between the first connecting shafts 1 and the second connecting shafts 2, and sliding blocks 5 matched with the sliding chutes 3 are respectively arranged at two transverse sides of the transition circular plate 4, the two sliding blocks 5 are arranged at 90 degrees with each other, as shown in fig. 4, the sliding chutes 3 on the first connecting shafts 1 and the second connecting shafts 2 are also arranged at 90 degrees with each other, when the coupler is not installed for use, the limiting columns 6 installed in the two sliding blocks 5 are respectively inserted into the limiting holes 7 arranged in the sliding grooves 3 corresponding to the limiting columns, so that the limiting between the transition circular plate 4 and the first connecting shaft 1 and the second connecting shaft 2 is realized, and at the moment, the transition circular plate 4, the first connecting shaft 1 and the second connecting shaft 2 are integrated and cannot move mutually (the axes of the first connecting shaft 1, the second connecting shaft 2 and the transition circular plate 4 are collinear);

namely, when the coupler is installed, the first connecting shaft 1 is connected with the driving shaft, and because the axes of the first connecting shaft 1, the transition circular plate 4 and the second connecting shaft 2 are collinear at this time, when the first connecting shaft 1 and the driving shaft are installed completely, the second connecting shaft 2 and the driven shaft can be directly installed, so that the driving shaft and the driven shaft are quickly centered, the installation efficiency is improved, the motor shaft or the transmission shaft cannot jump in the initial period of time when the equipment is put into operation, and the axes of the driving shaft and the driven shaft can be collinear, and at this time, the first connecting shaft 1, the transition circular plate 4 and the second connecting shaft 2 realize the transmission of the power of the driving shaft to the driven shaft (the transition circular plate 4 cannot generate displacement between the first connecting shaft and the second connecting shaft under the matching of the limiting column 6 and the limiting hole 7);

after the equipment runs for a long time, due to the reasons of installation accuracy errors between a stator and a rotor inside the motor, low installation accuracy between transmission parts and the like, the situation that a motor shaft or a transmission shaft has radial runout can be caused, and under the situation, the position far away from the motor is larger in radial runout amplitude (namely, the first connecting shaft 1 connected with the motor shaft swings in the radial direction by taking the motor as a center and the swinging amplitude of the position far away from the motor is larger in the first connecting shaft 1), so that the axes of the first connecting shaft 1 and the second connecting shaft 2 are deviated;

preferably, rubber circular plates 11 coaxially installed with the transition circular plate 4 are fixedly installed on both lateral sides of the transition circular plate 4, and the transition circular plate 4 is in contact with the first connecting shaft and the second connecting shaft through the rubber circular plates 11 (as shown in fig. 1 and 2), when the first connecting shaft 1 is in radial run-out along with the run-out of the motor shaft, the first connecting shaft 1 is in contact with one end face of the rubber circular plate 11 to press the rubber circular plate 11, as shown in fig. 5, because the first connecting shaft 1 swings radially around the motor, an oblique pressing force is applied to the rubber circular plate 11 in contact with the first connecting shaft 1 at the contact part of the first connecting shaft 1 and the rubber circular plate 11 (i.e. the force applied to the rubber circular plate 11 by the first connecting shaft 1 is not applied in a direction perpendicular to the rubber circular plate 11), as shown in fig. 6, trigger rings 12 which are in contact with the rubber circular plate 11 and are installed in a sliding manner in a transverse direction of the transition circular plate 4 are respectively arranged on two transverse sides of the transition circular plate 4, trigger springs 13 are connected between the trigger rings 12 and the transition circular plate 4 (initially, when the rubber circular plate 11 does not receive a pressing force from an inclined direction, the trigger rings 12 are in contact with the rubber circular plate 11 under the action of the trigger springs 13), when the rubber circular plate 11 receives a tilting pressing force from the first connecting shaft 1, the rubber circular plate 11 is forced to deform, and the trigger rings 12 are pressed by the deformation of the rubber circular plate 11 and are moved towards the direction of the tensile trigger springs 13, and the trigger rings 12 are connected with the positioning device through a transmission device, so that when the first connecting shaft 1 swings too much in the radial direction and the deformation amount of the rubber circular plate 11 caused by extrusion is too large, the distance of the trigger ring 12 moving in the transition circular plate 4 is forced to be maximum, and at this time, the trigger ring 12 drives the positioning device to move through the transmission device connected with the trigger ring and enables the positioning device to release the position limitation of the energy storage device (since the two position limiting posts 6 are connected with the energy storage device arranged in the transition circular plate 4, after the positioning device releases the position limitation of the energy storage device, the position limiting posts 6 withdraw from the position limiting holes 7 matched with the energy storage device under the action of the energy storage device, we set that at the beginning, the energy storage device arranged in the transition circular plate 4 exerts an acting force on the two position limiting posts 6 to enable the position limiting posts 6 to withdraw outwards from the position limiting holes 7), so that the transition circular plate 4, the first connecting shaft 1 and the second connecting shaft 2 do not keep a whole (that, the transition circular plate 4 moves in a sliding groove 3 arranged on the first connecting shaft 1 and the second connecting shaft 2 through a sliding block 5 connected with the transition circular plate;

at this time, even if the first connecting shaft 1 swings greatly in the radial direction and the shaft center between the first connecting shaft 1 and the second connecting shaft 2 is deviated, the transmission of the power can be well realized by the movement of the transition circular plate 4 between the first connecting shaft 1 and the second connecting shaft 2 (as shown in fig. 19, even if the shaft centers of the first connecting shaft 1 and the second connecting shaft 2 are not collinear, the transmission influence caused by the deviation of the shaft centers of the first connecting shaft and the second connecting shaft is compensated by the displacement of the transition circular plate 4 in the two sliding grooves 3), and the situation that the transmission components are abraded and generate heat when the shaft centers of the first connecting shaft 1 and the second connecting shaft 2 are deviated is avoided;

it is to be noted here that: we are fixed with the butt rubber board respectively and make slider 5 through butt rubber board and 3 diapire contacts of spout in the one side that the back of the body is carried on the back of the body of two sliders 5, and we place spacing post 6 in spacing downthehole 7 one end fixed mounting have with it the rubber stop collar 8 that the axle center set up (the diameter of rubber stop collar 8 is the same with the diameter of spacing hole 7), refer to fig. 20 and show, we are fixed with respectively on the both sides wall with slider 5 sliding fit in spout 3 with slider 5 lateral wall matched with slip rubber board 10 (slip rubber board 10 only sets up on the initial slider 5 is in the corresponding lateral wall of spout 3 internal position and the distance between two slip rubber boards 10 is less than the distance between the both sides wall of spout 3 slightly, as shown in fig. 21), so set up like this and be for: when the first connecting shaft 1 swings in the radial direction, an extrusion force is generated on the limiting post 6 inserted into the limiting hole 7, the sliding block 5 in contact with the bottom wall of the sliding groove 3 and two side walls of the sliding groove 3 corresponding to the initial position of the sliding block 5, if the contact positions between the limiting post 6 and the limiting hole 7, between the sliding block 5 and the bottom wall of the sliding groove 3, and between the two side walls of the sliding groove 3 and the initial position of the sliding block 5 are all set to be in hard contact, when the first connecting shaft 1 swings in the radial direction, the contact positions of various components are subjected to large abrasion, even deformation, and further the components are seriously damaged, rubber plates are arranged on the contact positions of various components, that is, when the first connecting shaft 1 swings in the radial direction, a certain swing space allowance is reserved for the first connecting shaft 1, so that the first connecting shaft 1 can extrude the rubber circular plate 11 when swinging in the radial direction, it is to be noted here that: because the positions of the limiting rubber sleeve, the abutting rubber plate and the sliding rubber plate 10 are all close to the central position of the first connecting shaft 1, when the first connecting shaft 1 swings radially, the extrusion deformation quantity of the limiting rubber sleeve, the abutting rubber plate and the sliding rubber plate 10 is smaller, and at the moment, the extrusion deformation quantity of the first connecting shaft 1 to the rubber circular plate 11 is greatly increased (the position of the rubber circular plate 11 with larger deformation quantity is concentrated on the position of the rubber circular plate 11 away from the circle center);

preferably, referring to fig. 20, a plurality of guide wheels 14 are arranged at the sliding fit contact portions of the inside of the sliding block 5 and the two side walls of the sliding chute 3, initially, when the sliding block 5 is in a limited state, the plurality of guide wheels 14 are arranged in the sliding block 5 and do not contact with the sliding rubber plates 10 arranged on the two side walls of the sliding chute 3, a guide spring 15 is connected between the plurality of guide wheels 14 and the sliding block 5 to achieve a limiting effect on the guide wheels 14 (so that when the sliding block 5 is not yet limited, a pulling force on the plurality of guide wheels 14 is achieved, and we set the guide spring 15 to be in a stretched state initially), after the positioning device releases the positioning on the energy storage device, when the limiting column 6 contracts towards the inside of the sliding block 5 under the effect of the energy storage device, during the contraction of the limiting column 6, the plurality of guide wheels 14 are synchronously pushed by a pushing device arranged between the guide wheels 14 and the limiting column 6 to slide the sliding block 5 outwards (at this time, the plurality of guide wheels 14 are achieved to be fixed to the two side walls of the sliding chute 3 at this time When the sliding block 5 slides in the sliding slot 3 corresponding to the sliding block 10, as shown in fig. 21, when the sliding block 5 moves in the sliding slot 3 and does not contact with the sliding rubber plate 10, the plurality of guide wheels 14 just contact with the side walls of the two sliding slots 3 (at this time, the pushing device realizes a pushing action force on the plurality of guide wheels 14 to ensure that the guide wheels 14 contact with the side walls of the sliding slot 3, and the sliding block 5 contracts inwards the sliding block 5 due to the interaction force), at this time, the movement of the sliding block 5 between the sliding slots 3 corresponding to the sliding block is converted into a rotational friction, so that the abrasion to the sliding block 5 and the two side walls of the sliding slot 3 is reduced, when the sliding block 5 moves in the sliding slot 3 and contacts with the sliding rubber plate 10, the sliding rubber plate 10 is extruded by the plurality of guide wheels 14, so that it is possible to pass over the two sliding rubber plates 10 as it is and to achieve the effect of moving in the chute 3.

Embodiment 2, on the basis of embodiment 1, referring to fig. 6, we have a rectangular cavity 16 in the transition circular plate 4, two limiting posts 6 are arranged on opposite sides of the rectangular cavity 16, one end of each limiting post is arranged in the rectangular cavity 16, and a connecting rod 17 is rotatably mounted on each end of each limiting post, the energy storage device comprises a moving rod 18 vertically slidably mounted in the rectangular cavity 16, and a moving spring 19 is connected between the moving rod 18 and the rectangular cavity 16 (initially, the moving spring 19 is in a stretched state and applies a large acting force to the moving rod 18, which can make the moving rod move upwards as shown in fig. 6), we have positioning plates 20 slidably mounted on both lateral sides of the rectangular cavity 16, and a positioning spring 21 is connected between the positioning plate 20 and the rectangular cavity 16, referring to fig. 10, we have positioning holes 22 respectively arranged on both lateral sides of the bottom of the moving rod 18, and initially, when the energy storage is in the positioned state, the positioning plate 20 is inserted into the corresponding positioning hole 22 under the action of the positioning spring 21 matched with the positioning plate, so that the positioning effect on the moving rod 18 is realized;

when the amount of the extrusion deformation of the rubber circular plate 11 is large, the trigger ring 12 is forced to move, and the positioning device is driven to act through the transmission device, that is, the transmission device drives the two positioning plates 20 to withdraw from the corresponding positioning holes 22, so as to release the positioning of the moving rod 18, at this time, the moving rod 18 moves upwards rapidly in the rectangular cavity 16 under the action of the moving spring 19, and the connecting rod 17 rotatably mounted with the moving rod drives the limiting column 6 to slide outwards from the corresponding limiting hole 7, and finally, the effect of completely retracting the limiting column 6 into the corresponding sliding block 5 is achieved;

referring to fig. 10, we can set a butt rod matching with the moving rod 18 at the upper position in the rectangular cavity 16, i.e. when the moving rod 18 is blocked by the butt rod after a certain distance upwards, it will not move upwards and the bottom of the moving rod 18 is abutted against two positioning plates 20 respectively (when the moving rod 18 moves upwards to the position where its lower end surface is just higher than the lower end surface of the two positioning plates 20, the two positioning plates 20 move towards each other under the action of the positioning springs 21 and are abutted against the lower end surface of the moving rod 18, at this time, the moving rod 18 just drives the limit post 6 to completely withdraw from the corresponding limit hole 7 outwards and to completely retract into the slider 5 through the connecting rod 17 rotatably installed with it), at this time, although the moving rod 18 still has a tendency to move upwards under the action of the moving springs 19, but cannot move under the block of the butt rod (the butt rod is not shown in the figure), even if the transition circular plate 4 rotates along with the first and second connecting shafts to generate a centrifugal force (which causes the moving rod 18 to receive a force that continues to move in the direction of restoring the deformation of the moving spring 19), the moving rod 18 will not move and will always be in the position shown in fig. 10 due to the blocking of the abutting rods, and at this time, the two limit posts 6 are always in the corresponding sliders 5.

Embodiment 3, on the basis of embodiment 2, referring to fig. 9, we have circular cavities 23 coaxially disposed on both lateral sides of a transition circular plate 4 respectively, and a trigger ring 12 is installed on the transition circular plate 4 through a sliding rod 24 integrally connected with the transition circular plate, the trigger spring 13 is connected between one end of the sliding rod 24 disposed in a rectangular cavity 16 and the transition circular plate, referring to fig. 10, we have driving racks 25 fixedly disposed at vertical intervals on both longitudinal sides of a positioning plate 20 respectively, and a transmission gear 26 rotatably installed in the rectangular cavity 16 is matched between the two driving racks 25 matched on the same longitudinal side, the transmission gear 26 is connected with an unlocking gear 28 rotatably installed in the rectangular cavity 16 through a transmission pulley set 27, when the corresponding trigger ring 12 is pressed by a rubber circular plate 11 to generate movement (i.e. when the trigger ring 12 moves along with the movement of the trigger ring 12 and further drives the transmission pulley set 27 to operate through the unlocking gear 28 connected with the trigger ring), with the running of the transmission pulley set 27, the transmission gear 26 drives the transmission racks 25 which are located at two longitudinal sides and vertically spaced and respectively corresponding to the two positioning plates 20 to move towards the direction away from each other, thereby withdrawing the two positioning plates 20 from the corresponding positioning holes 22, respectively (releasing the positioning effect on the moving rod 18), so that, when the trigger ring 12 is moved by an amount sufficient to withdraw the positioning plate 20 from the corresponding positioning hole 22 (which indicates that the amplitude of the radial swing of the first connecting shaft 1 is large), the positioning of the moving rod 18 is released, and when the moving rod 18 is no longer positioned, the limit post 6 is withdrawn from the corresponding limit hole 7 through the matched connecting rod 17, so that the transition circular plate 4 slides between the first connecting shaft and the second connecting shaft, therefore, the transmission influence caused by the deviation of the axle centers of the first connecting shaft 1 and the second connecting shaft 2 is compensated;

it is to be noted here that: when any one of the rubber circular plates 11 is squeezed by the corresponding connecting shaft to generate a deformation amount and force the corresponding trigger ring 12 to move, the transmission device corresponding to the trigger ring 12 can drive the unlocking gear 28 to act and achieve the effect of driving the positioning plates 20 to withdraw from the corresponding positioning holes 22, and the transmission racks 25 which are vertically arranged at intervals and matched with each other are respectively arranged on the two longitudinal sides of the two positioning plates 20, so that when one positioning plate 20 withdraws from the corresponding positioning hole 22, the other positioning plate 20 also withdraws from the corresponding positioning hole 22 synchronously, and the positioning effect on the moving rod 18 is relieved.

Embodiment 4, based on embodiment 3, the diameter of the circular cavity 23 is smaller than that of the rubber circular plate 11, referring to fig. 6, when the circular cavity 23 is disposed, the diameter of the circular cavity 23 is slightly smaller than that of the rubber circular plate 11, that is, the rubber circular plate 11 is fixedly mounted on the transition circular plate 4, the trigger ring 12 corresponding to the rubber circular plate 11 can be forced to move in the circular cavity 23 only when the rubber circular plate 11 is greatly pressed and deformed, that is, the transition circular plate 4 can be moved between the first connecting shaft 1 and the second connecting shaft 2 only when the deviation between the axes of the first connecting shaft 1 and the second connecting shaft 2 is large, because the transition circular plate 4 should be prevented from moving between the first connecting shaft 1 and the second connecting shaft 2 as much as possible when the deviation is not large and is within a reasonable range, once the transition circular plate 4 is moved between the first connecting shaft 1 and the second connecting shaft 2, The sliding block 5 on the transition circular plate 4 and the sliding groove 3 arranged on the first connecting shaft and the second connecting shaft are worn by the movement between the two connecting shafts, so that the service life of the coupler is seriously reduced by the wear of the transmission parts over time.

Embodiment 5, on the basis of embodiment 1, referring to fig. 13, we slidably install a guide frame 31 in the slide block 5 along a direction perpendicular to the side wall of the corresponding chute 3, we rotatably install a plurality of guide wheels 14 on the guide frame 31, we have through holes 32 matched with the guide wheels 14 at the sliding matching part of the slide block 5 and the side wall of the chute 3, (each guide wheel 14 is matched with one through hole 32, the through hole 32 is arranged in a way that the guide wheel 14 extends outwards out of the slide block 5 to reserve a channel),

referring to fig. 14, the pushing device includes a triangular sloping plate 33 fixedly mounted on the guide frame 31, and a trigger sloping block 34 matched with the triangular sloping plate 33 is fixedly mounted on the position corresponding to the position of the position-limiting post 6, when the position-limiting post 6 is retracted from the position-limiting hole 7 corresponding to the position-limiting post under the action of the energy storage device into the slide block 5, the trigger sloping block 34 fixedly connected with the position-limiting post 6 is driven synchronously to match with the triangular sloping plate 33 mounted on the guide frame 31 (i.e. the inclined plane of the trigger sloping block 34 contacts with the inclined plane of the triangular sloping plate 33), the triangular sloping plate 33 is forced to move in the direction away from the position-limiting post 6, and the effect of driving a plurality of guide wheels 14 to extend outward from the slide block 5 through the guide frame 31 is achieved, that is, when the guide wheels 14 extend outward from the slide block 5 corresponding to the through holes 32 and the position-limiting post 6 is completely withdrawn from the position-limiting hole 7 corresponding to which the position-limiting post 6 (the energy storage device does not drive one end of the position-limiting post 6 any more), and at this moment, the guide wheel 14 partially extends out of the sliding block 5 through the through hole 32 (refer to fig. 20, at this moment, the guide wheel 14 extending out of the sliding block 5 forces the sliding rubber plate 10 fixedly installed on the two side walls of the sliding chute 3 to generate certain deformation), then the transition circular plate 4 moves between the first connecting shaft 1 and the second connecting shaft 2, so that the sliding blocks 5 fixedly installed on the two transverse sides of the transition circular plate 4 respectively slide in the sliding chutes 3 corresponding to the sliding blocks, and as refer to fig. 21, when the sliding blocks 5 move in the sliding chutes 3 corresponding to the sliding blocks, the sliding blocks 14 are abutted against the two side walls of the sliding chute 3 through the plurality of guide wheels 14, so that the abrasion of a transmission part caused by the friction between the sliding blocks 5 and the two side walls of the sliding chute 3 is reduced, and the service life of the coupling is further prolonged.

Embodiment 6, on the basis of embodiment 5, as shown in fig. 14, preferably, the triangular sloping plate 33 is integrally provided with an extension plate 35 on one side close to the transition circular plate 4, so that when the limiting column 6 is completely retracted into the slider 5, one end of the trigger sloping block 34 fixedly connected with the limiting column 6 is just enabled to be away from the limiting column 6 and abutted against the extension plate 35 integrally connected with the triangular sloping plate 33, and further, the abutting force of the limiting column 6 on the guide frame 31 is enabled to be more stable.

Example 7, based on example 6, referring to fig. 15, we have a mounting frame 36 longitudinally slidably mounted on a guide frame 31, a clamping spring 37 is connected between the mounting frame 36 and the guide frame 31, we have bearing plates 38 fixedly mounted on the mounting frame 36 corresponding to guide wheels 14, and each bearing plate 38 is connected with a touch plate 40 matched with the guide wheel 14 through a bearing spring 39 (we set the touch plate 40 in an arc shape matched with the guide wheel 14, and we have a friction damping pad arranged on the side of the touch plate 40 facing the guide wheel 14 for increasing the friction resistance between the touch plate and the guide wheel 14), initially when a plurality of guide wheels 14 do not extend out of a slide block 5, the mounting frame 36 is under the action of the clamping spring 37 connected with the mounting frame to make the plurality of abutting plates 40 not contact with the guide wheel 14 (the clamping spring 37 is in a stretched state when we set the initial state);

when the guide frame 31 drives the guide wheels 14 to slide out of the slide blocks 5 outwards under the action of the triangular plates and the trigger inclined blocks 34 which are matched with each other, the slide blocks 5 fixedly arranged at the two transverse sides of the transition circular plate 4 slide in the corresponding slide grooves 3 respectively, as shown in the attached drawing 19, one sides of the slide blocks 5 provided with the guide wheels 14 are matched with the side walls of the slide grooves 3 respectively, so that when the guide wheels 14 extend out of the slide blocks 5 outwards, the guide wheels 14 are abutted against the side walls of the slide grooves 3, and as shown in the attached drawing 21, the guide wheels 14 are driven to rotate synchronously along with the sliding of the slide blocks 5 in the slide grooves 3;

referring to fig. 19, when the axes of the first connecting shaft 1 and the second connecting shaft 2 are not collinear, the two sliding blocks 5 fixedly connected to the transition circular plate 4 respectively reciprocate along the corresponding sliding slots 3 (reciprocate with the limiting hole 7 arranged in the sliding slot 3 as the center), if the amplitude of the reciprocating movement of the sliding block 5 in the sliding slot 3 is larger, it indicates that the axis deviation between the first connecting shaft 1 and the second connecting shaft 2 is larger, preferably, a detection driving device is arranged on each guide frame 31, which can be used to detect the distance of the reciprocating movement of the sliding block 5 in the corresponding sliding slot 3 (i.e., the rotation stroke of each guide wheel 14, when the sliding block 5 moves to the maximum distance from the center position of the sliding slot 3 to both sides and starts to move back, the guide wheel 14 starts to change direction, the detection driving device detects the rotation stroke of the guide wheel 14 when the guide wheel 14 rotates in the same direction, to correspondingly move the mounting bracket 36 by a corresponding distance in a direction approaching the guide wheel 14 by controlling the driving rack 41);

if the detection driving device detects that the stroke of the guide wheel 14 rotating along one direction is large (indicating that the deviation of the axes of the first and second connecting shafts is large), the driving rack 41 is correspondingly controlled to drive the mounting rack 36 to move a large distance towards the direction close to the guide wheel 14 (at this time, the bearing spring 39 connected between the bearing plate 38 and the abutting plate 40 is compressed more), so that the abutting plate 40 connected with the bearing plate 38 through the bearing spring 39 is extruded on the guide wheel 14 and certain friction resistance is generated on the guide wheel 14 through the friction damping pad arranged on the abutting plate 40, further the range of the movement of the slider 5 in the chute 3 through the plurality of guide wheels 14 is weakened, and if the detection driving device detects that the stroke of the guide wheel 14 rotating along one direction is small (indicating that the deviation of the axes of the first and second connecting shafts is small), the driving rack 41 is correspondingly controlled to drive the mounting rack 36 to move a small distance towards the direction close to the guide wheel 14 (at this time, the connection driving device controls the driving rack 41 to drive the mounting rack 36 to move a small distance towards the direction close to the guide wheel 14 The load spring 39 connected between the bearing plate 38 and the abutting plate 40 is compressed less), so that the abutting plate 40 connected with the bearing plate 38 through the load spring 39 is pressed on the guide wheel 14, and a certain frictional resistance is generated on the guide wheel 14 through the frictional damping pad arranged on the abutting plate 40, and also in order to weaken the range of the sliding block 5 moving in the sliding chute 3 through a plurality of guide wheels 14, as shown in fig. 15, the frictional resistance exerted on the corresponding guide wheel 14 by the abutting plate 40 can be controlled by arranging the detection driving device (the larger the frictional resistance exerted on the guide wheel 14 by the abutting plate 40 is, the smaller the range of the sliding block 5 moving in the corresponding sliding chute 3 is made), and the sliding condition of the sliding block 5 in the sliding chute 3 is correspondingly adjusted according to the magnitude of the axial deviation of the first connecting shaft and the second connecting shaft, so that the abrasion of the transmission parts is reduced as little as possible, accomplish because of first connecting axle 1 when radially producing the swing and first, two connecting axle axial that lead to and produce the deviation, can produce the inhibitory effect of certain degree to the runout of first connecting axle 1 to reduce first connecting axle 1 at radial amplitude of oscillation, and then reduce the loss to mechanical transmission part.

Embodiment 8, on the basis of embodiment 7, referring to fig. 17, we rotatably mount a synchronizing gear 42 on the guide frame 31, which coaxially rotates with one of the guide wheels 14, and the synchronizing gear 42 is engaged with a large gear 43 rotatably mounted on the guide frame 31 (the diameter of the large gear 43 is larger than that of the synchronizing gear 42 and the arrangement of the large gear 43 and the synchronizing gear 42 is such that when the slider 5 moves in the corresponding slide slot 3 to the maximum extent, the synchronizing gear 42 coaxially rotates with the guide wheel 14 can drive the large gear 43 to rotate by an angle not exceeding 90 °), the large gear 43 coaxially rotates with a driving circular plate 44, and the driving circular plate 44 extends perpendicularly to the driving circular plate 44 and is fixedly mounted with the driving circular plate 45 (as shown in fig. 18), referring to fig. 17, we rotatably mount two driven circular plates 46 on the guide frame 31 at intervals in the transverse direction, referring to fig. 18, two driven circular plates 46 are transversely spaced and coaxially arranged, but do not rotate coaxially, driven plates 47 matched with the driving plate 45 are respectively fixed on the two driven circular plates 46 along the radial extension direction of the driven circular plates, as shown in fig. 18, one driven plate 47 is positioned on one longitudinal side of the driving plate 45, and the other driven plate 47 is positioned on the other longitudinal side of the driving plate 45;

when the sliding block 5 starts to slide to one side from the central position of the sliding chute 3, the guide wheel 14 is driven to rotate, and the synchronous gear 42 which coaxially rotates with the guide wheel 14 is driven to rotate by the guide wheel 14, the synchronous gear 42 drives the large gear 43 to rotate by a certain angle, as shown in fig. 15, let us suppose that the synchronous gear 42 drives the large gear 43 to rotate by a certain angle in the clockwise direction shown in fig. 15, as shown in fig. 17, when the large gear 43 rotates, the driven circular plate 46 close to the large gear 43 is driven by the driving circular plate 44 and the driving plate 45 to synchronously rotate by a corresponding angle in the counterclockwise direction shown in fig. 17, let us connect the driven circular plate 46 with a one-way transmission device and drive the driving rack 41 connected with the mounting frame 36 to move by the one-way transmission device, and drive the mounting frame 36 to move by a corresponding distance in the direction close to the guide wheel 14 by the one-way transmission device along with the driven circular plate 46 close to the large gear 43 rotating by a certain angle, so that the contact plate 40 exerts a certain degree of frictional resistance on the guide wheel 14 under the action of the bearing spring 39 and the bearing plate 38 (when the slider 5 moves to the maximum position to one side in the sliding chute 3, then starts moving in the opposite direction, and the large gear 43 is driven to rotate in the opposite direction by the guide wheel 14 along with the reverse movement of the slider 5, so that when the slider 5 moves to the central position of the sliding chute 3 again, the driving plate 45 on the driving circular plate 44 rotates to the initial position again, i.e. the position shown in fig. 17 (it should be noted that when the driving circular plate 44 rotates to the initial position, the driven circular plate 46 close to the large gear 43 stops at the position driven by the driving circular plate 44 through the driving plate 45, and since the driven circular plate 46 drives the driving rack 41 to move through the unidirectional driving device, when the driven plate 47 is not contacted by the driving plate 45 any more, the driven circular plate 46 does not rotate and the mounting bracket 36 does not move at this time);

it is to be noted here that: since the large gear 43 does not drive the driven circular plate 46 far away from the large gear 43 to rotate in the above process, but since the driven circular plate 46 far away from the large gear 43 is connected with the driving rack 41 through the unidirectional driving device, we set that when the driven circular plate 46 close to the large gear 43 drives the driving rack 41 to move toward the direction close to the guide wheel 14, the driving rack 41 drives the driven circular plate 46 far away from the large gear 43 to rotate by the same angle in the clockwise direction as shown in fig. 17 through the unidirectional driving device corresponding to the driven circular plate 46 far away from the large gear 43, that is, the driven circular plates 46 rotate by the same angle in the counterclockwise direction and the clockwise direction respectively;

when the sliding block 5 moves to the center of the sliding chute 3 again, it starts to move towards the other side of the sliding chute 3, and at this time, the guide wheel 14 drives the large gear 43 to rotate clockwise as shown in fig. 17 through the synchronous gear 42 rotating coaxially with the guide wheel, and further synchronously drives the driving circular plate 44 to rotate clockwise as shown in fig. 17, if the moving amplitude of the sliding block 5 moving from the center of the sliding chute 3 to the other side decreases, the driving plate 45 connected with the driving circular plate 44 will not rotate to the position contacting with the driven plate 47 on the driven circular plate 46 far from the large gear 43 (which means that the swing of the first connecting shaft 1 along the radial direction decreases in the process), if the moving amplitude of the sliding block 5 moving from the center of the sliding chute 3 to the other side further increases (which means that the swing of the first connecting shaft 1 along the radial direction further increases in the process), the driving plate 45 connected to the driving circular plate 44 rotates to the position of the driven plate 47 corresponding to the driven circular plate 46 far from the large gear 43 and by pushing the driven plate 47, the driven circular plate 46 far from the large gear 43 is further rotated clockwise as shown in fig. 17, and with the further rotation of the driven circular plate 46, the angle of rotation relative to its initial position is further increased, and the driving rack 41 is further moved toward the leading wheel 14 by the unidirectional driving device connected thereto (with the driving rack 41 being further moved toward the leading wheel 14, the driving rack 41 is synchronously rotated counterclockwise as shown in fig. 17 by the same angle as the driven circular plate 46 near the large gear 43 by the unidirectional driving device corresponding to the driven circular plate 46 near the large gear 43, that is, no matter which driven circular plate 46 is driven by the driving circular plate 44 through the driving plate 45, the effect of synchronously driving the two driven circular plates 46 to rotate by the same angle in opposite directions can be finally achieved, and since we set the maximum rotation angle of the large gear 43 not to exceed 90 °, the large gear 43 only reciprocates within the range of 180 °, so that the compressed amount of the bearing spring 39 connected between the bearing plate 38 and the abutting plate 40 is further increased (the pressing force of the abutting plate 40 on the guide wheel 14 is made larger, and the frictional resistance applied to the guide wheel 14 is further increased);

similarly, after the sliding block 5 moves to one side along the sliding chute 3 to the farthest distance, the sliding block starts to move continuously to the position close to the center of the sliding chute 3 in the reverse direction, in the process, the large gear 43 drives the driving circular plate 44 to rotate to the initial position again, and after the sliding block 5 passes through the center of the sliding chute 3, the sliding block continues to move to the other side of the sliding chute 3, and the following process is the same and is not described too much;

it is to be noted here that: when the guide wheels 14 are arranged, a friction damping mechanism is arranged at the rotating installation position of the guide wheels 14 and the guide frame 31 which rotate coaxially with the synchronizing gear 42, and is used for enabling the synchronizing gear 42 to rotate due to shaking in the process that the transition circular plate 4 rotates along with the first connecting shaft and the second connecting shaft when the plurality of guide wheels 14 do not extend out of the sliding block 5 (at the moment, the sliding block 5 is still in a limited state) so as to drive the installation frame 36 to move relative to the guide frame 31.

Embodiment 9, on the basis of embodiment 8, referring to fig. 17, a unidirectional driving device includes: two driven circular plates 46 are respectively connected with driven pulley sets 48, wherein one driven pulley set 48 drives a first gear 49 rotatably mounted on the guide frame 31, the first gear 49 is meshed with a first one-way gear 50 rotatably mounted on the guide frame 31, a second one-way gear 51 matched with the other driven pulley set 48 is rotatably mounted on the guide frame 31, a driving cylinder 52 is coaxially and fixedly mounted on the second one-way gear 51, the other end of the driving cylinder 52 is coaxially and fixedly connected with one of the pulleys of the driven pulley set 48, and with regard to the structures of the first one-way gear 50 and the second one-way gear 51 and the installation relationship of the respective rotating shafts, reference is made to fig. 16, which will be described in detail with reference to fig. 16:

the first one-way gear 50 and the second one-way gear 51 are respectively rotatably mounted between the rotating shafts corresponding to the first one-way gear 50 and the second one-way gear 51, and the inner circular surfaces of the first one-way gear 50 and the second one-way gear 51 are provided with ratchets 53, pawls 54 matched with the ratchets 53 are rotatably mounted on the rotating shafts corresponding to the first one-way gear 50 and the second one-way gear 51, and the pawls 54 are matched with elastic rubber blocks 55 fixedly mounted on the rotating shafts, the first one-way gear 50 and the second one-way gear 51 are arranged at intervals and are both meshed with the driving rack 41, as shown in figure 17, when the driving circular plate 44 drives the driven circular plate 46 close to the large gear 43 to rotate along the counterclockwise direction shown in figure 17, the driving cylinder 52 coaxially and fixedly mounted with the second one-way gear 51 is driven by the driven pulley set 48 to rotate along the counterclockwise direction shown in figure 17, and further the driving cylinder 52 synchronously drives the second one-way gear 51 to rotate along the counterclockwise direction shown in figure 17, referring to fig. 16 again, when the second one-way gear 51 rotates in the counterclockwise direction shown in fig. 17 (i.e. the second one-way gear 51 rotates in the clockwise direction shown in fig. 16), the second one-way gear 51 will synchronously drive the driving rack 41 engaged therewith to move toward the guide wheel 14 (at this time, the pawl 54 rotatably mounted on the corresponding rotating shaft is forced to be continuously compressed along with the rotation of the second one-way gear 51), and simultaneously with the movement of the driving rack 41 toward the guide wheel 14, the driving rack 41 synchronously drives the first one-way gear 50 to rotate in the clockwise direction shown in fig. 16, and simultaneously with the clockwise rotation of the first one-way gear 50, the first gear 49 engaged therewith is synchronously driven to rotate in the counterclockwise direction shown in fig. 16 (i.e., the first gear 49 rotates in the clockwise direction as shown in fig. 17), the driven circular plate 46 corresponding to the first gear 49 is synchronously driven by the driven pulley set 48 to rotate by the same angle in the clockwise direction as shown in fig. 17 (while the driven circular plate 46 corresponding to the second one-way gear 51 rotates by the same angle in the counterclockwise direction as shown in fig. 17);

referring to fig. 16, since the clamping spring 37 connected between the mounting bracket 36 and the guide bracket 31 is initially set to be in a stretched state, the clamping spring 37 always has a force to move the mounting bracket 36 toward the direction close to the position-limiting post 6, and in addition, the driving rack 41 fixedly connected to the mounting bracket 36 is further moved toward the direction close to the guide wheel 14 by the first one-way gear 50 and the second one-way gear 51, so that the stretched amount of the clamping spring 37 is further increased, as shown in fig. 16, due to the matching relationship between the driving rack 41 and the first one-way gear 50 and the second one-way gear 51, the driving rack 41 cannot move in the opposite direction and can only move toward the guide wheel 14, and therefore, when the mounting bracket 36 moves a certain distance toward the direction close to the guide wheel 14, the mounting bracket 36 is located at the current position and cannot move in the opposite direction (also, because the driving rack 41 cannot move in the opposite direction) The one-way gear meshed with the one-way gear is not rotated because of the movement, and the two driven circular plates 46 rotatably mounted on the guide frame 31 are not rotated when not driven by the driving plate 45);

it is to be noted here that: because this shaft coupling can be to the power transmission between the two transmission shafts of axle center deviation, so, the shaft coupling of this scheme is more applicable to the mechanical transmission of low rotational speed and is not suitable for the mechanical transmission of high rotational speed (the mechanical transmission of high rotational speed can lead to the shaft coupling loss in this scheme great for its life reduces greatly).

The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

1. The automatic centering anti-deviation coupler comprises a first connecting shaft (1) and a second connecting shaft (2) which are arranged at a transverse interval, and is characterized in that sliding grooves (3) which extend along the radial direction of the first connecting shaft (1) and the second connecting shaft (2) are respectively arranged on one opposite side of the first connecting shaft (1) and one opposite side of the second connecting shaft (2), a transition circular plate (4) is arranged between the first connecting shaft (1) and the second connecting shaft (2), sliding blocks (5) which are matched with the sliding grooves (3) are respectively arranged on two transverse sides of the transition circular plate (4), the two sliding blocks (5) are arranged at 90 degrees, limiting columns (6) which are in transverse sliding fit with the sliding blocks (5) are arranged on two transverse sides in the transition circular plate (4), and limiting holes (7) which are matched with the limiting columns (6) are respectively arranged in the two sliding grooves (3);

the transition circular plate (4) is provided with rubber circular plates (11) which are coaxial with the transition circular plate (4) at two transverse sides respectively, and the transition circular plate (4) is provided with trigger rings (12) which are contacted with the rubber circular plates (11) at two transverse sides respectively, a trigger spring (13) is connected between the trigger rings (12) and the transition circular plate (4), the trigger rings (12) are connected with a positioning device through a transmission device, and the two limiting columns (6) are connected with an energy storage device arranged in the transition circular plate (4) and the energy storage device is connected with a positioning device arranged in the transition circular plate (4);

slider (5) and the corresponding sliding part cooperation of spout (3) have along being on a parallel with spout (3) lateral wall direction slidable mounting a plurality of leading wheels (14) and leading wheel (14) and slider (5) between be connected with guiding spring (15), be equipped with thrustor and thrustor can realize between leading wheel (14) and spacing post (6) that correspond with it: the guide wheel (14) is synchronously driven to move towards the outside of the sliding block (5) along with the shrinkage of the limiting column (6) towards the inside of the sliding block (5);

be equipped with rectangle chamber (16) in transition plectane (4), energy memory includes: one end of each of the two limiting columns (6) is provided with a connecting rod (17) in a rotating mode, the other end of each of the two connecting rods (17) is provided with a moving rod (18) which is vertically and slidably mounted in the transition circular plate (4), a moving spring (19) is connected between the moving rod (18) and the transition circular plate (4), the positioning device comprises positioning plates (20) which are located on the two transverse sides of the moving rod (18) and are transversely and slidably mounted in the transition circular plate (4), a positioning spring (21) is connected between each positioning plate (20) and the transition circular plate (4), positioning holes (22) which are matched with the positioning plates (20) are formed in the two transverse sides of each moving rod (18), and the positioning plates (20) are connected with a transmission device;

transition plectane (4) horizontal both sides are equipped with circular chamber (23) and trigger ring (12) respectively with the axle center and install in transition plectane (4) through slide bar (24) lateral sliding with an organic whole body coupling, trigger spring (13) are connected and are arranged in rectangle chamber (16) between one end and transition plectane (4) in slide bar (24), transmission includes drive rack (25) that fixed mounting in the vertical both sides of locating plate (20) and vertical interval set up, are located and cooperate jointly between vertical homonymy matched with two drive rack (25) to have drive gear (26) of rotation installation in rectangle chamber (16), drive gear (26) are connected with through drive pulley group (27) and rotate and install unblock gear (28) and unblock gear (28) in rectangle chamber (16) and are driven by trigger ring (12) that correspond with it respectively.

2. A self-centring anti-drift coupling according to claim 1, characterized in that said circular cavity (23) has a smaller diameter than the diameter of the rubber circular plate (11).

3. The automatic centering anti-deviation shaft coupling according to claim 1, wherein a guide frame (31) is slidably mounted in the sliding block (5) along a direction parallel to the side wall of the corresponding sliding chute (3), a plurality of guide wheels (14) are rotatably mounted on the guide frame (31), a through hole (32) matched with the guide wheels (14) is formed in the sliding mounting portion of the sliding block (5) and the side wall of the corresponding sliding chute (3), the pushing device comprises a triangular inclined plate (33) fixedly mounted at one end, facing the limiting column (6), of the guide frame (31), and two axial sides of the limiting column (6) are respectively provided with a trigger inclined block (34) matched with the triangular plate.

4. The self-centering anti-deviation coupling according to claim 3, wherein the triangular sloping plate (33) is integrally provided with an extension plate (35) at a side close to the transition circular plate (4).

5. The automatic centering anti-deviation shaft coupling according to claim 4, wherein the guide frame (31) is provided with a mounting frame (36) in a longitudinal sliding manner, a clamping spring (37) is connected between the mounting frame (36) and the guide frame (31), the mounting frame (36) is fixedly provided with a bearing plate (38) matched with the guide wheel (14) and the bearing plate (38) is connected with a touch plate (40) matched with the guide wheel (14) through a bearing spring (39), the mounting frame (36) is integrally provided with a driving rack (41) and the driving rack (41) is connected with a detection driving device arranged on the guide frame (31), and the detection driving device can meet the requirements that: according to the size of the rotation stroke of the guide wheel (14), the mounting frame (36) is driven to move a corresponding distance towards the direction close to the guide wheel (14) by the driving rack (41).

6. A self-centering anti-drift coupling according to claim 5, wherein the guide frame (31) is rotatably provided with a synchronizing gear (42) rotating coaxially with one of the guide wheels (14), and the synchronizing gear (42) is engaged with a bull gear (43) rotatably provided on the guide frame (31), and the detection driving device comprises: the driving rack is characterized in that a driving circular plate (44) is coaxially rotated on the large gear (43), a driving plate (45) is arranged on the driving circular plate (44) along the radial direction of the driving circular plate, driven circular plates (46) are transversely installed on the guide frame (31) in a rotating mode at intervals, driven plates (47) matched with the driving plate (45) are arranged on the driven circular plates (46), the driven plates (47) are respectively arranged on two longitudinal sides of the driving plate (45), and the driven circular plates (46) are respectively connected with a one-way driving device and the one-way driving device is connected with the driving rack (41).

7. A self-centering anti-drift coupling according to claim 6, wherein the one-way drive means comprises: two driven plectane (46) are connected with driven pulley group (48) respectively, and one of them driven pulley group (48) drive has to rotate first gear (49) and first gear (49) meshing of installing on leading truck (31) first one-way gear (50) of rotating on leading truck (31), it has second one-way gear (51) and second one-way gear (51) with axle center fixed mounting drive tube (52) with another driven pulley group (48) matched with to rotate on leading truck (31), drive tube (52) are through driven pulley group (48) drive that corresponds with it.