An anti-interference servo motor docking structure and an alignment platform having the structure

Abstract

The present invention discloses an anti-interference servo motor docking structure and an alignment platform with the structure, which relates to the field of mechanical connection technology, including a docking joint, a guide groove arranged on the side of the docking joint to accommodate a ball, and the ball is ejected by a push block received in the inner cavity of the docking joint. Through the coordinated design of mechanical triggering and hydraulic driving, when the docking joint is inserted into the docking groove, the pressure head is compressed and retracted to open the hydraulic passage, and the blocking tube moves with the pressure head to release the seal of the liquid groove. The hydraulic oil pushes the plunger through the passage formed by the pressure relief hole and the liquid groove, and the initial gap between the push block and the plunger is eliminated. After that, the liquid pressure is transmitted, so that the push block accurately ejects the ball and embeds it into the ring groove of the docking groove, forcibly ensuring the uniqueness of the action sequence, and avoiding collision damage caused by the ball being ejected by mistake when it is not aligned. In addition, when the hydraulic pressure fluctuates or there is an external impact, the plunger is allowed to move slightly to stabilize the push block, effectively isolate the pressure, and reduce the interference with the locking state of the ball.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical connection, and particularly relates to an anti-interference servo motor docking structure and an alignment platform having the structure. Background Art

[0002] In the field of mechanical connection, the common connection method between a servo motor and a clamping air tooth mechanism is through the docking of a docking head and a docking groove. There is an axially slidable ejector block in the docking head, and its conical surface contacts the side balls. During normal operation, the power drives the ejector block to move, converting the axial force into a radial force, so that the balls are embedded in the annular groove in the docking groove to achieve a stable connection.

[0003] However, the prior art has defects. When the power system is accidentally intervened (such as control circuit failure, power source failure, mechanical shock, misoperation), and the docking head is not correctly inserted, the balls will protrude in advance. If the balls collide with the docking groove, the surface of the balls is likely to be deformed due to local pressure, damaging the geometric accuracy, resulting in subsequent docking deviation and affecting stability. Summary of the Invention

[0004] One of the purposes of the present invention is to improve the problem that in the process of docking between a docking head and a docking groove in the prior art, the balls are likely to protrude in advance due to the accidental intervention of the power system and may collide with the docking groove.

[0005] Another purpose of the present invention is to provide an alignment platform.

[0006] To achieve the above purpose, the present invention adopts the following technical solution: An anti-interference servo motor docking structure, wherein a guide groove provided on the side surface of the docking head accommodates balls, and the balls are ejected by a push block received in the inner cavity of the docking head. The push block is sleeved on a plunger hermetically received in the inner cavity of the docking head, and there is a gap allowing axial movement between the two. A spring is arranged at the rear end of the plunger.

[0007] A hydraulic pipeline provided on the docking head penetrates through the plunger hermetically. The front end of the hydraulic pipeline is of a closed structure, and a liquid passage groove communicating with the hydraulic pipeline is provided on the circumferential surface of the front end.

[0008] A pressure head telescopically connected to the front end of the docking head has a blocking pipe abutting against the plunger. The rear end of the blocking pipe is telescopically connected to the front end of the hydraulic pipeline to hermetically block the liquid passage groove. A pressure relief hole provided at the front end of the blocking pipe is misaligned with the liquid passage groove when the pressure head does not retract, and is aligned with the liquid passage groove after the pressure head retracts to form a hydraulic path to guide the hydraulic pressure to push the push block, thereby ejecting the balls.

[0009] In the above technical solution, the implementation method of the embodiment of the present invention is as follows:

[0010] Initial state: the pressure head is not retracted, the blocking tube blocks the liquid groove, the hydraulic passage is not formed, and the spring restricts the plunger and does not drive the push block to apply force to the ball.

[0011] The pressure head shrinks under force: the butt joint is inserted into the butt groove, the pressure head shrinks under pressure, the blocking tube pushes the plunger to move, the gap between the push block and the plunger is eliminated, and the pressure relief hole is aligned with the liquid groove to form a hydraulic passage.

[0012] Transmission of hydraulic pressure after the hydraulic passage is formed: the hydraulic oil enters the relevant space through the passage, and the hydraulic pressure acts on the push block through the plunger, overcoming the spring force and causing the push block to move backward.

[0013] Ball ejection: The ejection block moves backward to push the ball out of the guide groove and fits into the ring groove of the docking groove to achieve docking locking. The distance of the ball ejected by the hydraulic pressure is adapted to the depth of the ring groove.

[0014] Reset after pressure is removed: the hydraulic oil is discharged, the joint is pulled out, the pressure is removed, the spring pushes the plunger and the pressure head to reset, the pressure relief hole is misaligned with the liquid channel, and the hydraulic passage is cut off; the push block is reset under the ball reset force; the ball is squeezed and reset when it leaves the ring groove, hidden in the guide groove, and the structure returns to the initial state. In addition, the ball can be stabilized in the guide groove through the air pressure in the joint cavity or other mechanical limit structures.

[0015] The beneficial effects of the present invention are:

[0016] First, through the coordinated design of mechanical triggering and hydraulic drive, when the butt joint is inserted into the butt joint groove, the pressure head is compressed and retracted to open the hydraulic passage. The blocking tube moves with the pressure head to release the seal of the liquid groove. The hydraulic oil pushes the plunger through the passage formed by the pressure relief hole and the liquid groove, and the initial gap between the push block and the plunger is eliminated. After that, the liquid pressure is transmitted, so that the push block accurately pushes the ball into the annular groove of the butt joint groove, forcibly ensuring the uniqueness of the action sequence and avoiding collision damage caused by the ball being accidentally ejected when misaligned.

[0017] Secondly, the axial clearance design between the push block and the plunger is combined with a spring reset mechanism, which allows the plunger to move slightly to stabilize the push block when the hydraulic pressure fluctuates or external impacts occur, effectively isolating the pressure and reducing interference with the ball locking state. At the same time, the hydraulic passage is automatically cut off as the pressure head is reset to achieve on-demand energy supply and self-locking, which significantly improves the anti-interference ability and long-term stability of the docking process.

[0018] Furthermore, in an embodiment of the present invention, a clearance of not less than 10 mm is provided between the push block and the plunger to allow axial movement.

[0019] Furthermore, in an embodiment of the present invention, the compression stroke of the pressure head triggers the axis of the liquid passage groove to coincide with the axis of the pressure relief hole, and the threshold pressure of the hydraulic passage conduction formed is 2-5 MPa.

[0020] Further, in the embodiment of the present invention, the depth of the guide groove is 1 / 3 - 1 / 2 of the diameter of the ball, and the notch of the guide groove is chamfered.

[0021] Further, in the embodiment of the present invention, a guiding key is provided on the inner wall of the blocking pipe, and the guiding key cooperates with a guiding limiting groove provided on the outer wall of the hydraulic pipe to limit the rotation and outward movement of the pressure head.

[0022] Further, in the embodiment of the present invention, between the blocking pipe and the hydraulic pipe, between the plunger and the inner cavity of the docking head, and between the pressure head and the inner cavity of the docking head, sealing treatments are all performed through sealing rings.

[0023] Further, in the embodiment of the present invention, the surface of the top push block in contact with the ball is a conical surface, and the taper is 45° - 60°.

[0024] Further, in the embodiment of the present invention, a titanium nitride wear-resistant layer is coated on the surface of the ball, and the thickness is 10 - 20 μm.

[0025] Further, in the embodiment of the present invention, the ball is stabilized in the guide groove through the air pressure in the inner cavity of the docking head, or the ball is stabilized in the guide groove by providing a retaining ring or a circlip in the guide groove.

[0026] To achieve the second above-mentioned purpose, the present invention adopts the following technical solution: An alignment platform, which has the anti-interference servo motor docking structure described in the first invention purpose above. The alignment platform further has a hydraulic seat, a clamping air tooth mechanism, and a servo motor body. The telescopic end of the servo motor body is fixed to the back end of the hydraulic seat, and the docking head of the anti-interference servo motor docking structure is fixed to the front end of the hydraulic seat. A hydraulic oil hole for guiding hydraulic oil is provided on the side end of the hydraulic seat, and the hydraulic oil hole is communicated with the hydraulic pipe in the docking head. The back end of the clamping air tooth mechanism is provided with a docking groove that cooperates with the docking head, and an annular groove that cooperates with the ball in the docking head is provided on the inner wall surface of the docking groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of the alignment platform in the embodiment of the present invention.

[0028] Figure 2 It is a three-dimensional schematic diagram of the servo motor and the clamping air tooth mechanism in the embodiment of the present invention.

[0029] Figure 3 It is a schematic diagram of the anti-interference servo motor docking structure in the embodiment of the present invention.

[0030] Figure 4This is a partial schematic diagram of the anti-interference servo motor docking structure according to an embodiment of the present invention.

[0031] 10. Docking head, 11. Ball, 12. Hydraulic pipeline, 12.1 Liquid passage groove, 12.2 Guide and limit groove, 13. Pressure head, 13.1 Blocking pipe;

[0032] 20. Plunger, 21. Thrust block, 22. Spring;

[0033] 30. Hydraulic seat, 31. Hydraulic oil hole;

[0034] 100. Clamping air tooth mechanism, 200. Servo motor body. Detailed implementation manners

[0035] In order to clearly and completely describe the purpose and technical solution of the present invention, and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0038] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that, for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, the well-known sealing methods and structures applied between the submarine shaft and the body are not described in detail to avoid unnecessarily obscuring these embodiments. Additionally, all embodiments can be used in combination with each other. Embodiment 1

[0039] It should be noted first that, as the content of the specification, the structural shapes, connection relationships, mating relationships, and positional relationships that can be unambiguously obtained from the specification drawings should be understood as the content of the specification.

[0040] An anti-interference servo motor docking structure, as Figure 3 、 Figure 4 shown, the guide groove provided on the side of the docking head 10 accommodates the ball 11, and the ball 11 is pushed out by the top push block 21 received in the inner cavity of the docking head 10. The top push block 21 is sleeved on the plunger 20 sealed and received in the inner cavity of the docking head 10, and there is a gap allowing axial movement between the two, and the existence of this gap provides a certain amount of movement space for subsequent actions. In addition, a spring 22 is provided at the rear end of the plunger 20, and the spring 22 plays a resetting role in the whole structure, providing the necessary conditions for the cyclic action of the structure.

[0041] As Figure 4 shown, the hydraulic pipeline 12 provided on the docking head 10 penetrates through the plunger 20 in a sealed manner. This penetration method ensures the flow of hydraulic oil in the pipeline and also forms a relatively stable connection relationship between the hydraulic pipeline 12 and the plunger 20.

[0042] The front end of the hydraulic pipeline 12 is a closed structure, and a liquid passage groove 12.1 communicating with the hydraulic pipeline 12 is provided on the circumferential surface of the front end. The function of the liquid passage groove 12.1 is to allow hydraulic oil to flow out under specific conditions, thereby driving other components to act.

[0043] The pressure head 13 telescopically connected to the front end of the docking head 10 has a blocking pipe 13.1 that abuts against the plunger 20. The rear end of the blocking pipe 13.1 is telescopically connected to the front end of the hydraulic pipeline 12 to seal and block the liquid passage groove 12.1. The pressure relief hole provided at the front end of the blocking pipe 13.1 is misaligned with the liquid passage groove 12.1 when the pressure head 13 does not retract, and is aligned with the liquid passage groove 12.1 after the pressure head 13 retracts to form a hydraulic path to guide the hydraulic pressure to push the top push block 21, thereby pushing out the ball 11.

[0044] The implementation method of this anti-interference servo motor docking structure is as follows:

[0045] Initial state:

[0046] The pressure head 13 does not retract. At this time, the blocking tube 13.1 seals and blocks the liquid passage groove 12.1. The pressure relief hole provided at the front end of the blocking tube 13.1 is misaligned with the liquid passage groove 12.1, and the hydraulic oil in the hydraulic pipeline 12 cannot flow out through the liquid passage groove 12.1, and the hydraulic path is not formed.

[0047] The spring 22 provided between the plunger 20 and the inner cavity of the docking head 10 is in a natural state (or has a certain pre-tightening force). Under the restriction of the force of the spring 22, the plunger 20 does not drive the push block 21 to apply an ejection pressure to the ball 11.

[0048] The pressure head 13 is forced to retract:

[0049] When the docking head 10 is inserted into the docking groove and the bottom wall of the docking groove presses the pressure head 13 to contract towards the inner cavity of the docking head 10, the plunger 20 pushed by the blocking tube 13.1 also moves accordingly, eliminating the gap allowing axial movement between the push block 21 and the plunger 20. At the same time, the pressure relief hole provided at the front end of the blocking tube 13.1 gradually aligns with the liquid passage groove 12.1, forming a hydraulic path.

[0050] Hydraulic pressure transmission after the hydraulic path is formed:

[0051] Since the hydraulic pipeline 12 is hermetically penetrated through the plunger 20, and the front end of the hydraulic pipeline 12 is a closed structure, when the pressure relief hole aligns with the liquid passage groove 12.1 to form a hydraulic path, the hydraulic oil enters the space between the pressure head 13 and the plunger 20 from the hydraulic pipeline 12 through the liquid passage groove 12.1 and the pressure relief hole. The hydraulic pressure acts on the push block 21 through the plunger 20 to overcome the force of the spring 22 (and other possible resistances), causing the push block 21 to move backward.

[0052] The ball 11 is ejected:

[0053] During the process of the push block 21 moving backward, it pushes the ball 11 originally accommodated in the guide groove, ejects the ball 11 from the guide groove, and engages with the annular groove of the docking groove to achieve docking and locking with the docking groove. The distance that the ball 11 ejected by hydraulic pressure is ejected is adapted to the depth of the annular groove.

[0054] Reset after the pressure is removed:

[0055] After the hydraulic oil is discharged from the space between the pressure head 13 and the plunger 20, the docking head 10 is pulled out. At this time, the pressure acting on the pressure head 13 by the bottom wall of the docking groove is removed. Since the spring 22 provided between the plunger 20 and the inner cavity of the docking head 10 is elastic, the spring 22 will push the plunger 20 and the pressure head 13 to move forward and reset, and the pressure relief hole is misaligned with the liquid passage groove 12.1 again, and the hydraulic path is cut off.

[0056] The push block 21 sleeved thereon is reset accordingly by the restoring force of the ball 11 , and a gap allowing axial movement appears between the push block 21 and the plunger 20 .

[0057] When the ball 11 is separated from the annular groove of the docking groove, the arc surface of the slide groove squeezes the ball 11, so that the ball 11 is reset and pushes the push block 21 to reset, and the push block 21 hides itself in the guide groove again, and the entire docking structure returns to the initial state, waiting for the next working cycle.

[0058] The ball 11 is stabilized in the guide groove by the air pressure in the inner cavity of the joint 10, or by other existing mechanical limiting structures, which is not limited in the present invention.

[0059] One of the purposes of the present invention is to, through the coordinated design of mechanical triggering and hydraulic drive, when the docking joint 10 is inserted into the docking groove, the pressure head 13 is compressed and retracted to open the hydraulic passage, and the blocking tube 13.1 moves with the pressure head 13 to release the seal of the liquid groove 12.1, and the hydraulic oil pushes the plunger 20 through the passage formed by the pressure relief hole and the liquid groove 12.1, and the hydraulic pressure is transmitted after the initial gap between the push block 21 and the plunger 20 is eliminated, so that the push block 21 accurately pushes the ball 11 out and embeds it into the annular groove of the docking groove, thereby forcing the uniqueness of the action sequence to avoid collision damage caused by the ball 11 being accidentally ejected when misaligned.

[0060] The second purpose of the present invention is to combine the axial clearance design between the push block 21 and the plunger 20 with the reset mechanism of the spring 22, so as to allow the plunger 20 to be slightly displaced to stabilize the push block 21 when the hydraulic pressure fluctuates or external impacts occur, thereby effectively isolating the pressure and reducing the interference with the locking state of the ball 11. At the same time, the hydraulic passage is automatically cut off as the pressure head 13 is reset to realize on-demand energy supply and self-locking, which significantly improves the anti-interference ability and long-term stability of the docking process.

[0061] Specifically, Figure 4 As shown, a clearance of not less than 10 mm is provided between the push block 21 and the plunger 20 to allow axial movement. The plunger 20 is allowed to move forward slightly under hydraulic fluctuations or instantaneous impacts (such as oil pressure pulsation), avoiding frequent vibration of the push block 21 and ensuring the position stability of the ball 11 after being ejected.

[0062] Specifically, the compression stroke of the pressure head 13 triggers the axis of the liquid groove 12.1 to coincide with the axis of the pressure relief hole, and the threshold pressure of the hydraulic passage formed is 2-5Mpa, ensuring that the hydraulic passage is opened only after the joint 10 is fully inserted, to prevent the ball 11 from being ejected when it is not aligned.

[0063] Specifically, Figure 3 As shown, the depth of the guide groove is 1 / 3-1 / 2 of the diameter of the ball 11, and the groove of the guide groove is rounded.

[0064] Specifically, as Figure 4 shown, a guiding key (not shown) is provided on the inner wall of the blocking pipe 13.1, and the guiding key cooperates with a guiding limiting groove 12.2 provided on the outer wall of the hydraulic pipe 12 to limit the rotation and outward movement of the pressure head 13. This not only prevents the misalignment of the pressure relief hole and the liquid passage groove 12.1 caused by the rotation of the pressure head 13, ensuring the precise alignment of the hydraulic passage, but also limits the outward movement stroke of the pressure head 13 to avoid overstretching the sealing ring or disengaging from the inner cavity of the docking head 10.

[0065] Specifically, as Figure 4 shown, between the blocking pipe 13.1 and the hydraulic pipe 12, between the plunger 20 and the inner cavity of the docking head 10, and between the pressure head 13 and the inner cavity of the docking head 10, sealing treatment is carried out through sealing rings to prevent hydraulic oil from leaking to non-working areas and maintain the pressure stability of the system.

[0066] Specifically, the surface of the push block 21 in contact with the ball 11 is a conical surface with a taper of 45° - 60°. The conical surface converts the axial hydraulic driving force of the plunger 20 into the radial pushing force of the ball 11, and the cone angle range balances the transmission efficiency and the movement trajectory stability of the ball 11.

[0067] Specifically, the surface of the ball 11 is coated with a titanium nitride wear-resistant layer with a thickness of 10 - 20 μm.

[0068] Specifically, the ball 11 is stabilized in the guide groove by the air pressure in the inner cavity of the docking head 10, or the ball 11 is stabilized in the guide groove by setting a retaining ring or a circlip in the guide groove. Embodiment 2

[0069] An alignment platform, as Figure 1 、 Figure 2 shown, this alignment platform has the anti-interference servo motor docking structure in the above-mentioned Embodiment 1. The alignment platform also has a hydraulic seat 30, a clamping air tooth mechanism 100 and a servo motor body 200. The telescopic end of the servo motor body 200 is fixed to the back end of the hydraulic seat 30, and the docking head 10 of the anti-interference servo motor docking structure is fixed to the front end of the hydraulic seat 30. A hydraulic oil hole 31 for guiding hydraulic oil is provided on the side end of the hydraulic seat 30, and the hydraulic oil hole 31 is communicated with the hydraulic pipe 12 in the docking head 10. The back end of the clamping air tooth mechanism 100 is provided with a docking groove matching with the docking head 10, and a ring groove matching with the ball 11 in the docking head 10 is provided on the inner wall surface of the docking groove.

[0070] Although the above description of the illustrative specific embodiments of the present invention is for the convenience of those skilled in the art to understand the present invention, the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention defined and determined by the appended claims, all inventions and creations using the concept of the present invention are within the scope of protection.

Claims

1. An anti-interference servo motor docking structure, wherein a guide groove arranged on the side of the docking joint accommodates a ball, and the ball is ejected by a push block received in the inner cavity of the docking joint, characterized in that: The push block is sleeved on the plunger which is sealed and accommodated in the inner cavity of the butt joint, and a gap is provided between the two to allow axial movement, and a spring is provided at the rear end of the plunger; The hydraulic pipeline provided with the joint sealably penetrates the plunger, the front end of the hydraulic pipeline is a closed structure, and the circumferential surface of the front end is provided with a liquid passage groove communicated with the hydraulic pipeline; The pressure head telescopically connected to the front end of the joint has a blocking tube abutting the plunger, and the rear end of the blocking tube is telescopically connected to the front end of the hydraulic pipeline to seal and block the liquid groove. The pressure relief hole set at the front end of the blocking tube is misaligned with the liquid groove when the pressure head is not retracted, and is aligned with the liquid groove to form a hydraulic passage after the pressure head is retracted to guide the hydraulic pressure to push the push block, thereby ejecting the ball.

2. The anti-interference servo motor docking structure according to claim 1, characterized in that: A clearance of not less than 10 mm is provided between the push block and the plunger to allow axial movement.

3. The anti-interference servo motor docking structure according to claim 1, characterized in that: The compression stroke of the pressure head triggers the axis of the liquid passage groove to coincide with the axis of the pressure relief hole, and the threshold pressure of the hydraulic passage formed is 2-5 MPa.

4. The anti-interference servo motor docking structure according to claim 1, characterized in that: The depth of the guide groove is 1 / 3-1 / 2 of the diameter of the ball, and the groove opening of the guide groove is rounded.

5. The anti-interference servo motor docking structure according to claim 1, characterized in that: The inner wall of the blocking tube is provided with a guide key, and the guide key cooperates with the guide limit groove provided on the outer wall of the hydraulic pipeline to limit the rotation and outward movement of the pressure head.

6. The anti-interference servo motor docking structure according to claim 1, characterized in that: The blocking tube and the hydraulic pipeline, the plunger and the inner cavity of the docking joint, and the pressure head and the inner cavity of the docking joint are sealed by sealing rings.

7. The anti-interference servo motor docking structure according to claim 1, characterized in that: The surface where the push block contacts the ball is a conical surface with a taper of 45°-60°.

8. The anti-interference servo motor docking structure according to claim 1, characterized in that: The surface of the ball is coated with a titanium nitride wear-resistant layer with a thickness of 10-20 μm.

9. The anti-interference servo motor docking structure according to claim 1, characterized in that: The ball is stabilized in the guide groove by the air pressure in the inner cavity of the butt joint, or the ball is stabilized in the guide groove by arranging a retaining ring or a retaining spring in the guide groove.

10. An alignment platform, characterized in that: The alignment platform has the anti-interference servo motor docking structure described in any one of claims 1 to 9 above, and the alignment platform also has a hydraulic seat, a clamping wind tooth mechanism and a servo motor body. The telescopic end of the servo motor body is fixed to the back end of the hydraulic seat, and the docking head of the anti-interference servo motor docking structure is fixed to the front end of the hydraulic seat. The side end of the hydraulic seat is provided with a hydraulic oil hole for guiding the hydraulic oil, and the hydraulic oil hole is connected to the hydraulic pipeline in the docking head. The back end of the clamping wind tooth mechanism is provided with a docking groove that matches the docking head, and the inner wall surface of the docking groove is provided with an annular groove that matches the ball in the docking head.

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