CN212165868U

CN212165868U - Two-dimensional control mechanism for respectively locking and unlocking axial movement and circumferential rotation

Info

Publication number: CN212165868U
Application number: CN201922171184.9U
Authority: CN
Inventors: 陈聚伍; 雒合群
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-12-18
Anticipated expiration: 2029-12-06

Abstract

The utility model discloses a two-dimensional control mechanism which is locked and unlocked respectively by axial movement and circumferential rotation.A central shaft hole of a mechanism frame is used for sleeving a middle shaft, the front end part of the mechanism frame is used for connecting a nut frame, the rear end part of the mechanism frame is used for connecting a two-way tightening frame, and a nut which is sleeved in a nut cavity of the nut frame is connected with a thread section of the middle shaft in a threaded manner; the axial braking clamp of the bidirectional braking frame is matched with and sleeved with the middle shaft, and the middle shaft and the mechanism frame are fixed into a whole after the axial braking clamp is locked. The utility model discloses the fixing that adopts the clamp among the two-dimensional control mechanism who adopts is the periphery contact, and face friction is fixed, and frictional force is fairly big, has greatly strengthened the reliability of locking. Through the matching installation of the mechanical frame and the middle shaft, the mechanical frame does not need to be locked with the middle shaft through a locking wire, so that no gap exists between the mechanical frame and the middle shaft, the stability of the middle shaft in the mechanical frame is ensured, and the stability of the connecting structure is improved.

Description

Two-dimensional control mechanism for respectively locking and unlocking axial movement and circumferential rotation

Technical Field

The utility model belongs to the node adjustment technique in the structure is adjusted to mechanical member multidimension, concretely relates to control member axial displacement and pivoted two dimension control mechanism.

Background

In a mechanical structure of a plurality of precise instruments related to multi-dimensional adjustment, axial movement and circumferential rotation of each three-dimensional rod piece are often controlled, the connecting rod pieces are provided with nodes for axial movement and rotation simultaneously, the structure volume can be simplified, the number of the nodes is reduced, and the structure is compact and simplified. Especially, when the transverse movement, the longitudinal movement and the vertical movement of the device are required to be realized through three-dimensional adjustment in many medical instruments, translation adjusting nodes are necessarily adopted, and when steering adjustment is required, steering adjusting nodes are required, and each node is required to have a reliable locking structure. Such as fracture positioning or distraction or reduction devices found in medical devices, surgical procedures require first reduced docking and fixation of the two ends of the fracture site prior to intramedullary nail fixation and bone plate fixation. Traction is an important means for reducing femoral fracture and recovering the length of lower limbs. The hollow nail rotating disc type positioning device for femoral neck fracture with the publication number of CN 109223197A comprises a rotation adjusting mechanism, a transverse moving adjusting mechanism, a longitudinal moving adjusting mechanism and a universal joint positioning mechanism. The patent technology adopts a femoral neck guide pin as a fixed axis, and the installation position of the hollow nail is determined through the rotation of a rotary positioner. Can always keep the hollow nail and the femoral neck guide pin in parallel state to rotate, adjust and position. Therefore, the purpose of quickly and accurately positioning the hollow nails in parallel can be realized. In the fracture positioning device technology represented by this patent document, it is necessary to realize a multidimensional adjustment function, namely, the adjustment of horizontal angle rotation or vertical angle rotation is needed on the basis of three-dimensional adjustment, the adjustment nodes adopted by the mechanical structure rod piece for multi-dimensional adjustment are often independent, although the patent discloses operating with a combination of axial and steering movement into the same node, but because all the adopted rod pieces are stainless steel rod pieces, the realization of mobile locking and rotary locking through the locking wire is not reliable, the fixation of the existing locking system is point contact friction fixation and is not firm, because the gravity of the whole device is large and related instruments and equipment are worn, the locking performance and the moving stability of the whole device are insufficient, so that the problem of node vibration or sliding occurs, and the overall performance of the device is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can control axial displacement and circumferential direction and lock the two-dimensional control mechanism who opens respectively, make axial displacement control and axial rotation control integrated in a node, and can be stable with member firm in connection and reliable through this node, make corresponding equipment carry out the multidimension and adjust and can effectively implement and become feasible.

The technical scheme adopted for realizing the purpose is as follows: a two-dimensional control mechanism capable of being locked and unlocked respectively by axial movement and circumferential rotation comprises a middle shaft, a nut frame, a nut, a mechanism frame, a bidirectional locking frame, a guide key and the like.

The bidirectional tightening brake device comprises a bidirectional tightening brake frame, a middle shaft, a nut frame, a bidirectional tightening brake frame, a middle shaft, a nut and a bolt, wherein the mechanism frame comprises a cylindrical central shaft hole for sleeving the middle shaft, the front end part of the mechanism frame is connected with the nut frame, the rear end part of the mechanism frame is connected with the bidirectional tightening brake frame, and the middle shaft is sleeved.

The middle shaft is a cylindrical rod body, a threaded section is arranged at one end of the middle shaft and is positioned in the nut frame, and an axial flat sliding groove or a key groove is arranged at the other end of the middle shaft and is positioned in the bidirectional tightening frame.

The screw rack comprises a connecting shaft cavity and a screw cavity, the connecting shaft cavity is fixedly sleeved at one end of the mechanism rack, a screw is sleeved in the screw cavity, a part of the screw is exposed out of the screw cavity and is convenient to rotate by hand, and the screw is sleeved in a threaded section of the middle shaft.

Two-way tight frame of stopping includes the base and fixes the tight clamp of circumference of stopping and the tight clamp of axial of base both sides, and the tight clamp matching of circumference of stopping cup joints tip behind the framework, the axis is cup jointed in the tight clamp matching of axial braking, the base set up the matching suit in the guide key of the flat spout of axial or keyway, when the tight clamp locking of circumference stopping and the tight clamp of axial braking unclamped, the axis only can be followed the central axis hole endwise slip of framework and can not be rotatory, when the tight clamp locking of axial braking and the tight clamp of circumference stopping unclamp, the center pin can only be followed the axle center and rotated and can not endwise slip, when two tight clamps of stopping all deadlocks, then the center pin is fixed as an organic whole with the framework.

Mechanism locking end

Wherein, the tight clamp of circumference and the tight clamp of axial brake all be the ring form and have the opening, the opening part includes two locking ends that have fit clearance, two locking serve and have corresponding locking hole respectively, run through the installation clamp lock wire in the adjacent locking hole.

In addition, the bidirectional brake frame can further comprise a central support plate which is connected with the base, the circumferential brake clamp and the axial brake clamp are respectively positioned on two sides of the central support plate, and a central shaft hole is formed in the central position of the central support plate and used for sleeving the central shaft. One side wall or two side walls of the middle shaft hole are provided with key installing holes, a guide key is fixedly installed in the key installing holes, and the guide key is simultaneously sleeved in the axial flat sliding groove or the key groove.

And a guide key can be axially fixed in the middle of the base of the bidirectional tightening frame, and is sleeved in the axial flat sliding groove or the key groove.

Furthermore, an annular clamp clamping groove is formed in the rear end portion of the machine frame, the circumferential tightening clamp of the bidirectional tightening brake frame is sleeved on the outer side of the clamp clamping groove in a matching mode, a clamp positioning wire is installed on the base or on the side face of the circumferential tightening clamp along the radial direction, and the clamp positioning wire stretches into the clamp clamping groove.

A rotary lock hole is arranged on the side wall of the connecting shaft cavity along the radial direction and is provided with a rotary lock wire; the rotary lock wire is arranged at the front end of the machine frame and radially extends into the rotary wire clamping groove, so that the nut frame and the mechanism frame can rotate relatively when the rotary wire clamping groove is loosened but not separated from the rotary wire clamping groove, and the nut frame and the mechanism frame are locked and cannot rotate relatively after the rotary wire clamping groove is locked.

The side surfaces of the circumferential tightening clamp and the axial tightening clamp which are positioned on two sides of the bidirectional tightening frame can also be respectively provided with an auxiliary lock hole, the auxiliary lock hole of the circumferential tightening clamp is provided with an auxiliary lock wire for fixedly connecting a machine frame, and the auxiliary lock wire for fixedly connecting a center shaft is arranged in the auxiliary lock hole of the axial tightening clamp.

The front end part of the framework can be provided with an annular positioning clamping groove, the rotary locking wire radially extends into the positioning clamping groove, and the nut frame and the framework can be fixedly locked by the positioning clamping groove.

The utility model has the advantages that: adopt in the accurate apparatus for carrying on the multidimension regulation among the prior art to move the combination with axial displacement and turn to when the mode of operating for same node, current locking system's fixed is that the point contact friction is fixed, and is very insecure, and the utility model discloses a fixing of clamp is the periphery contact, and the face friction is fixed, and frictional force is fairly big, and is not a grade with the point contact friction, has greatly strengthened the reliability of locking. Because each member that adopts all is stainless steel member, the node that prior art adopted is unreliable in the process of passing through the lock silk, and its removal locking and rotation locking are not really locked, and the great gravity of whole device wears relevant apparatus again, can cause whole device locking performance and move stability can not enough and appear node vibrations or slip problem. The utility model discloses among the two-dimensional control mechanism who adopts, match the installation through framework and axis, because framework need not lock silk and axis locking through the lock, so do not have the clearance between framework and the center pin to guaranteed that the axis is located the stability of framework, when equipment uses and when adjusting, can not go out the dress and cause local stirring and slip or rotate the scheduling problem appearance because of vibrations, improved connection structure's stability.

The utility model discloses on matching the suit completely with stabilizing centraxonial basis to the axis through the framework, through two-way tight frame of stopping when solid with the framework fixation card, still selectively retrain centraxonial axial displacement and rotation to the axis through clamp locking, the locking mode is reliable and stable, can prevent effectively that the axis from sideslipping or the endwise slip problem. When the circumferential braking clamp is locked and the axial braking clamp is loosened, the center shaft can only axially slide along the center shaft hole of the machine frame but cannot rotate, when the axial braking clamp is locked and the circumferential braking clamp is loosened, the center shaft can only rotate along the shaft center but cannot axially slide, and when the two braking clamps are all locked, the center shaft and the mechanism frame are fixed into a whole.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic sectional structure of fig. 1.

Fig. 3 is one of the exterior structural views of the frame.

Fig. 4 is a schematic top view of the structure of fig. 3.

Fig. 5 is an appearance structure diagram of the nut frame.

Fig. 6 is a schematic cross-sectional structure of fig. 5.

Fig. 7 is an appearance structure diagram of the middle shaft.

Fig. 8 is a schematic view of the cross-sectional mechanism of fig. 7.

Fig. 9 is one of schematic perspective views of a bidirectional brake bracket.

Fig. 10 is a second schematic perspective view of the bidirectional brake bracket.

Fig. 11 is a front structural schematic diagram of the bidirectional brake bracket.

Fig. 12 is a schematic end face structure diagram of the bidirectional brake bracket.

Fig. 13 is a second external structural view of the frame.

Fig. 14 is a schematic cross-sectional view of fig. 13.

Reference numbers in the figures: the locking device comprises a middle shaft 1, an axial flat sliding groove 11, an end locking hole 12, an end locking screw 13, a threaded section 14, a nut frame 2, a shaft connecting cavity 21, a nut cavity 22, a rotating locking hole 23, a rotating locking screw 24, a nut 3, a mechanism frame 4, a front end 41, a rear end 42, a rotating screw clamping groove 43, a positioning clamping groove 43a, a clamp clamping groove 44, a central shaft hole 45, a connector 46, a bidirectional braking frame 5, a base 50, a circumferential braking clamp 51, a mechanism locking end 52, a mechanism clamp locking screw 521, a mechanism locking hole 53, an axial braking clamp 54, an shaft locking end 55, a shaft clamp locking screw 551, a shaft locking hole 56, an auxiliary locking hole 57, a key installing hole 58, a central supporting plate 59 and a guide key 6.

Detailed Description

Example 1: when the precise instrument needs three-dimensional adjustment, for example, when the rod three-dimensional adjustment is performed on a hollow nail rotating disc type positioning device for femoral neck fracture of CN 109223197A, a two-dimensional control mechanism as shown in figure 1 is installed at each two-dimensional adjustment node position of the positioning device, so as to control the movement and rotation of two rods which are perpendicular to each other.

As shown in a two-dimensional control mechanism in figure 1, a circumferential braking clamp 51 and an axial braking clamp 54 are respectively arranged on two sides of a frame 4, a central shaft 1 is sleeved in an axial hole of the three parts, the axial movement of the central shaft 1 is adjusted through a nut 3, the circumferential braking clamp 51 restrains the rotation of the central shaft 1, and the axial movement of the central shaft 1 is restrained through the axial braking clamp 54. One side of the machine frame 4 is vertically provided with a connecting head 46, or is sleeved on the machine frame through a connecting sleeve in a matching way or is of an integrated structure with the machine frame, the connecting seat vertical to one side of the connecting sleeve can be fixedly connected with the vertical rod piece, and the connecting seat is not required to rotate and move axially when being connected with the rod piece, so that the corresponding rod piece can be provided with a positioning hole for firm connection. But the two-dimensional node position for adjustment is required, and movable adjustment and locking are required, so that the locking mechanism shown in figure 1 can provide flexible adjustment during loosening and firmness and reliability after locking.

Specifically, as shown in fig. 2, 3 and 4, the machine frame 4 includes a cylindrical central shaft hole, the central shaft hole 45 is used for sleeving the central shaft 1, the front end portion 41 is used for connecting the nut frame 2, the rear end portion 42 is used for connecting the bidirectional braking frame 5, and the central shaft 1 is sleeved in the central shaft hole 45 in a matching manner and can rotate and axially slide along the shaft hole.

As shown in fig. 5 and 6, the bottom bracket 1 is a cylindrical rod, one end of which is provided with a threaded section 14 and is positioned in the nut frame 2, and the other end of which is provided with an axial flat sliding groove 11 or a key groove and is positioned in the bidirectional tightening frame 5. And the two ends of the middle shaft 1 are respectively provided with a transverse split groove, the bottom of the transverse split groove is provided with a transverse end lock hole 12, and the side wall of the transverse split groove is provided with a screw hole and penetrates through the installation end lock wire 13.

The nut frame 2 shown in fig. 7 and 8 includes a coupling cavity 21 and a nut cavity 22, the centers of the coupling cavity 21 and the nut cavity 22 have shaft holes, the shaft holes of the coupling cavity 21 are sleeved at one end of the frame, the rotary locking screw 24 is installed in the rotary locking hole 23 of the side wall of the coupling cavity 21 and the positioning slot 43a of the side wall of the end of the mechanism frame 4, and the two positioning slots are fixed together by the rotary locking screw 24, that is, the coupling cavity 21 and the mechanism frame 4 are fixed together. The nut is sleeved in the nut cavity 22, but the nut cavity 22 is of a hollow structure, so that most of the nut is exposed to facilitate hand-held operation. The internal thread of the screw nut is sleeved on the threaded section 14 of the middle shaft 1. Therefore, when the screw 3 is pushed by fingers, the screw 3 in the screw frame 2 rotates in situ to realize the axial stable translation of the middle shaft 1.

The two-way brake bracket 5 shown in fig. 9 to 12 includes a base 50 and a center support plate 59 perpendicular to the base 50, and a center position of the center support plate 59 is provided with a center shaft hole. Two side walls of the central shaft hole are provided with key installing holes 58, a guide key 6 is fixedly installed in the key installing holes 58, and the guide key 6 is simultaneously sleeved in the axial flat sliding groove 11 or the key groove.

On the base 50 that is located center support plate 59 both sides, fixedly connected with circumference is stopped tight hoop 51 and axial and is stopped tight hoop 54 respectively, and circumference is stopped tight hoop 51 and is matchd and cup jointed tip 42 behind the framework 4, axial are stopped tight hoop 54 and are matchd and cup joint axis 1, and the both sides hoop is including locking end and locking hole respectively, runs through the installation hoop lock silk in the locking hole. When the circumferential braking clamp is locked and the axial braking clamp is loosened, the center shaft can only axially slide along the center shaft hole of the machine frame but cannot rotate, when the axial braking clamp is locked and the circumferential braking clamp is loosened, the center shaft can only rotate along the shaft center but cannot axially slide, and when the two braking clamps are all locked, the center shaft and the mechanism frame are fixed into a whole.

Example 2: on the basis of embodiment 1, an annular hoop clamping groove 44 is further formed in the rear end portion 42 of the frame 4, and a hoop positioning wire is radially installed on the side surface of the circumferential braking hoop 51 of the bidirectional braking frame 5, and extends into the hoop clamping groove 44. This clamp locating wire is along radially stretching into this clamp draw-in groove 44 to rotatory silk draw-in groove 43 relaxes but when not deviating from clamp draw-in groove 44, and two-way tight 5 of stopping can rotate relatively with framework 4, behind clamp draw-in groove 44 locking rotatory silk draw-in groove 43, two-way tight 5 of stopping is locked can not rotate relatively with framework 4.

Example 3: on the basis of embodiment 1, the side surfaces of the circumferential tightening clamp 51 and the axial tightening clamp 54 on the two sides of the bidirectional tightening frame 5 are respectively provided with an auxiliary locking hole 57 and an auxiliary locking wire, the auxiliary locking wire is installed in the auxiliary locking hole of the circumferential tightening clamp and used for fixedly connecting the machine frame, and the auxiliary locking wire is installed in the auxiliary locking hole of the axial tightening clamp and used for fixedly connecting the middle shaft. After the central shaft 1 is restrained and locked by the circumferential braking clamp 51 and the axial braking clamp 54, the locking degree of the central shaft 1 can be further improved by using the auxiliary locking wire.

Example 3: based on the embodiment 1, in addition to the embodiment 1, the bidirectional brake bracket 5 is adopted to restrain the locking of the center shaft 1, so as to limit the axial movement and rotation of the center shaft 1, and at the same time, the front end portion 41 of the mechanism frame 14 shown in fig. 13 is provided with the annular rotary wire clamping groove 43, and the rotary locking wire 24 radially extends into the rotary wire clamping groove 43, so that when the rotary wire clamping groove 43 is loosened but not separated from the rotary wire clamping groove 43, the nut frame 2 and the mechanism frame 4 can rotate relatively, and after the rotary wire clamping groove 43 locks the rotary wire clamping groove 43, the nut frame 2 and the mechanism frame 4 are locked and cannot rotate relatively. The locking mode is stable and reliable by selectively restricting the fixed nut frame 2 through the rotating locking wire 24, and the problem of side slipping or axial sliding of the middle shaft 1 can be effectively prevented.

Example 5: another kind of axial displacement and circumferential direction lock the two-dimensional control mechanism who opens respectively, including axis 1, screw frame 2, screw 3, mechanism frame 4, two-way tight frame 5 and the guide key 6 of stopping, wherein mechanism frame 4 contains cylindric central shaft hole, and its axle hole is used for the suit axis 1, its preceding tip 41 is used for connecting nut frame 2, and its back tip 42 is used for connecting two-way tight frame 5 of stopping, axis 1 matches the suit and can follow central shaft hole 45 and rotate and axial slip in this central shaft hole 45.

The middle shaft 1 is a cylindrical rod body, one end of the middle shaft is provided with a threaded section 14 and is positioned in the nut frame 2, and the other end of the middle shaft is provided with an axial flat sliding groove 11 or a key groove and is positioned in the bidirectional braking frame 5.

The nut frame 2 comprises a connecting shaft cavity 21 and a nut cavity 22, shaft holes are formed in the centers of the connecting shaft cavity 21 and the nut cavity 22 and used for being sleeved with the middle shaft 1, and a nut 3 sleeved in the nut cavity 22 of the nut frame 2 is connected to the threaded section 14 of the middle shaft 1 in a threaded mode.

Two-way tight frame 5 of stopping includes base 50 and fixes the circumference of stopping tight hoop 51 and the axial tight hoop 54 of stopping at 50 both sides of base, and base 50 is provided with the guide key 6 that is used for retraining the flat spout 11 of axial or keyway, and the circumference is stopped tight hoop 51 and is matchd and cup jointed tip 42 behind the framework 4, circumference are stopped tight hoop 51 and are locked the back, and well axle 1 only can be followed the central shaft hole 45 endwise slip of framework 4. The axial braking clamp 54 is matched with and sleeved on the central shaft 1, and the central shaft 1 and the mechanism frame 4 are fixed into a whole after the axial braking clamp 54 is locked.

Example 6: on the basis of embodiment 5, the circumferential braking clamp 51 and the axial braking clamp 54 respectively include a locking end and a locking hole, and a clamp locking wire is installed in the locking hole in a penetrating manner.

Example 7: on the basis of embodiment 5, the side wall of the coupling cavity 21 is provided with a rotary lock hole 23 along the radial direction and is provided with a rotary lock wire 24; an annular rotary screw clamping groove 43 is formed in the front end portion 41 of the mechanism frame 4, the rotary locking screw 24 extends into the rotary screw clamping groove 43 in the radial direction, so that when the rotary screw clamping groove 43 is loose but does not depart from the rotary screw clamping groove 43, the nut frame 2 and the mechanism frame 4 can rotate relatively, and after the rotary screw clamping groove 43 is locked to the rotary screw clamping groove 43, the nut frame 2 and the mechanism frame 4 are locked and cannot rotate relatively.

Example 8: on the basis of embodiment 5, the bidirectional brake bracket 5 comprises a base 50 and a center support plate 59 perpendicular to the base 50, and the circumferential brake clamp 51 and the axial brake clamp 54 are respectively located on two sides of the center support plate 59 and attached to the center support plate 59. The central position of the central supporting plate 59 is provided with a central shaft hole, two side walls of the central shaft hole are provided with key installing holes 58, a guide key 6 is fixedly installed in the key installing holes 58, and the guide key 6 is simultaneously sleeved in the axial flat chute 11 or the key groove.

Example 9: on the basis of embodiment 5, the side surfaces of the circumferential tightening clamp 51 and the axial tightening clamp 54 on both sides of the bidirectional tightening frame 5 are respectively provided with an auxiliary locking hole 57 and are provided with an auxiliary locking wire, and the inner end of the auxiliary locking wire is pressed against the side wall of the center shaft 1.

Example 10: on the basis of embodiment 5, the rear end portion 42 of the mechanism frame 4 is provided with an annular hoop clamping groove 44, and a hoop positioning wire is radially installed on the side surface of the circumferential braking hoop 51 of the bidirectional braking frame 5, and the hoop positioning wire extends into the hoop clamping groove 44.

Example 11: in addition to embodiment 1 or 3, the front end portion 41 of the mechanism frame 4 shown in fig. 13 is provided with an annular positioning groove 43a, and the rotary locking screw 24 radially extends into the positioning groove 43a, so that the positioning groove 43a can fixedly lock the nut frame 2 and the mechanism frame 4, and cannot rotate relatively without falling off.

Claims

1. A two-dimensional control mechanism capable of being locked and unlocked respectively in axial movement and circumferential rotation is characterized in that a central shaft is matched and sleeved in a cylindrical central shaft hole of a mechanism frame, a screw frame of a suite is fixed on the mechanism frame, and a two-way brake frame is movably sleeved at the rear end of the mechanism frame; one end of the middle shaft is provided with a threaded section which is positioned in the nut frame, and the other end of the middle shaft is provided with an axial flat sliding groove or a key groove which is positioned in the bidirectional braking frame; a nut is sleeved in the nut frame, a part of the nut is exposed to facilitate handheld rotation, and the nut is connected with the threaded section of the middle shaft; two-way tight frame of stopping includes the base and fixes the tight clamp of circumference of stopping and the tight clamp of axial of base both sides, and the tight clamp matching of circumference of stopping cup joints the end can rotate behind the framework, and the axis is cup jointed in the tight clamp matching of axial stop, and the base setting matches the suit in the direction key of the flat spout of axial or keyway, the tight clamp of circumference stop and the tight clamp of axial stop all be the ring form and have the opening, the opening part includes two locking ends that have fit clearance, has corresponding locking hole on the both locking ends respectively, runs through the installation clamp lock silk in the adjacent locking hole.

2. The two-dimensional control mechanism for locking and unlocking by axial movement and circumferential rotation as claimed in claim 1, wherein the bidirectional locking bracket further comprises a center support plate coupled to the base, the circumferential locking clamp and the axial locking clamp are respectively disposed on two sides of the center support plate, and a center hole is disposed at a center of the center support plate for receiving the center shaft.

3. The two-dimensional control mechanism for respectively locking and unlocking the brake disc in the axial direction and the circumferential direction according to claim 1, wherein a guide key is axially fixed in the middle of the base of the bidirectional brake frame, and the guide key is simultaneously sleeved in the axial flat sliding groove or the key groove.

4. The two-dimensional control mechanism for locking and unlocking by axial movement and circumferential rotation as claimed in claim 1, wherein the rear end of the mechanism frame is provided with an annular clamp slot, the circumferential tightening clamp of the bidirectional tightening brake frame is sleeved outside the clamp slot in a matching manner, and a clamp positioning wire is radially arranged on the base or on the side surface of the circumferential tightening clamp and extends into the clamp slot.

5. The two-dimensional control mechanism capable of being locked and unlocked by axial movement and circumferential rotation respectively as claimed in claim 1, wherein the side wall of the coupling cavity is provided with a rotary lock hole along the radial direction and is provided with a rotary lock wire; the rotary lock wire is arranged at the front end of the machine frame and radially extends into the rotary wire clamping groove, so that the nut frame and the mechanism frame can rotate relatively when the rotary wire clamping groove is loosened but not separated from the rotary wire clamping groove, and the nut frame and the mechanism frame are locked and cannot rotate relatively after the rotary wire clamping groove is locked.

6. The two-dimensional control mechanism capable of being locked and unlocked by axial movement and circumferential rotation as claimed in claim 5, wherein the front end of the mechanism frame is provided with an annular positioning slot, the rotary locking screw radially extends into the positioning slot, and the positioning slot can fixedly lock the nut frame and the mechanism frame.

7. The two-dimensional control mechanism for respectively locking and unlocking in the axial movement and the circumferential rotation according to claim 1, is characterized in that auxiliary locking holes are respectively formed in the side surfaces of the circumferential locking hoop and the axial locking hoop which are positioned on two sides of the bidirectional locking frame, the auxiliary locking holes of the circumferential locking hoop are provided with auxiliary locking wires for fixedly connecting a machine frame, and the auxiliary locking holes of the axial locking hoop are provided with auxiliary locking wires for fixedly connecting a middle shaft.