Quickly assemblable and disassemblable target connecting structure and method for bnct

Abstract

SOLUTION: A quickly assemblable and disassemblable target connecting structure for BNCT and a method therefor are disclosed, at least including a target section, a pipeline section, and at least one locking device configured to connect the target section and the pipeline section, wherein the locking device at least includes a lock body, a lock lever, and a driving mechanism.EFFECT: By driving a lock lever to telescopically move along an axial direction through the driving mechanism, rapid connection and rapid disassembly between the target section and the pipeline section can be achieved, the operation is simple, the assembly and disassembly efficiency is high, the convenience of replacing the target section and maintaining a vacuum system in a BNCT system is improved, and furthermore, based on a positional change of a slider, locking and unlocking are realized by telescopic movement of the lock lever along the axial direction, the structure is simplified, the concept is ingenious, and the conventional locking and unlocking modes are changed.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of nuclear medicine radiotherapy, and in particular to a quick-detachable target connection structure and method for BNCT. [Background technology]

[0002] After a long period of development, the application of nuclear technology in the medical field has made great strides, and nuclear medicine imaging examinations and various radiation therapy methods have become an indispensable part of modern medicine. Boron Neutron Capture Therapy (BNCT) based on compact accelerators is a new treatment method for cancer progression in recent years.

[0003] An accelerator neutron source is a key device that generates the neutrons required for therapy, and it mainly includes three main parts: an ion source, a vacuum acceleration system, and an induction focus system. The vacuum system is an important component of the accelerator, and is composed of vacuum piping and vacuum pumps. The degree of vacuum in the piping directly determines the mass of the beam, so the connection of the vacuum piping is an important issue.

[0004] The existing connection between the target segment and the vacuum pipe often uses a vacuum flange method, which is fixed with bolts and nuts and has a liner pressed between the flange end faces to form a seal. This method requires the manual tightening of a relatively large number of bolts one by one during the vacuum pipe docking process, making the entire process time-consuming and inconvenient for manual operation in certain environments, such as radiation-exposed spaces and narrow spaces, which makes it difficult to replace the target segment and maintain the vacuum system. Summary of the Invention [Problem to be solved by the invention]

[0005] The technical problem that the present invention aims to solve is to solve the technical defects of the prior art, in that the target segments and vacuum piping are connected by fastening with bolts and nuts, which makes operation inconvenient and makes it difficult to replace the target segments and maintain the vacuum system. [Means for solving the problem]

[0006] In order to solve the above technical problems, the technical solutions of the present invention are as follows: A quick disconnect target connection structure for BNCT, comprising: a target segment, a piping segment, and a locking device for connecting the target segment and the piping segment, the locking device comprising: a lock body in which a lock pin that is elastically expandable and contractible along a radial direction is installed; a locking groove that accommodates the locking pin when it projects radially, a slider that is slidably connected within the locking groove along the axial direction, a first guide surface and a second guide surface that intersect at the maximum outer diameter of the slider, and a locking lever having an accommodation groove that fits the first guide surface on one side of the locking groove that is close to the free end of the locking lever, and a second guide portion installed at the free end; a drive mechanism for moving the lock lever in an axial direction relative to the lock body and for providing a continuous tension force in a locked state; The driving mechanism and the locking body are fixedly installed on the target segment and the piping segment, respectively, one end of the locking lever is fixedly connected to the driving mechanism, and the other end of the locking lever is a free end. A receiving groove that fits the first guide surface is installed on one side of the locking groove close to the free end of the locking lever, and a second guide part is installed on the free end of the locking lever.

[0007] In a preferred embodiment, the lock body is provided with a lock hole that accommodates the lock lever protruding in the axial direction, and at least one lock pin is provided on the inner wall of the lock hole along the circumferential direction.

[0008] In a preferred embodiment, the lock body includes an inner sleeve and an outer sleeve that are nested within each other, the lock hole is located on the inner sleeve, and a mounting portion for mounting a lock pin is located on the inner sleeve.

[0009] In a preferred embodiment, the mounting portion includes a countersunk groove provided in the outer wall of the inner sleeve and a pin hole that radially passes through from the countersunk groove to the lock hole, and a boss that fits into the countersunk groove is provided at the rear end of the lock pin.

[0010] In a preferred embodiment, an elastic member is disposed between the boss and the inner wall of the outer sleeve.

[0011] In a preferred embodiment, a lock head is provided at the free end of the lock lever, the lock head including an end head portion, a lock groove segment and a lock-up segment in sequence, and the lock groove is located on the lock groove segment.

[0012] In a preferred embodiment, the lock-up segment has an inclined transition portion at one end thereof close to the lock groove segment.

[0013] In a preferred embodiment, the slider is fitted onto the locking groove segment.

[0014] In a preferred embodiment, the drive mechanism includes, but is not limited to, a linear motor, a hydraulic cylinder, or a pneumatic cylinder.

[0015] In a preferred embodiment, the first guide surface and the second guide surface are tapered surfaces or arcuate surfaces.

[0016] In a preferred embodiment, a first guide portion is provided at the free end of the lock pin.

[0017] In a preferred embodiment, the first guide portion and / or the second guide portion has a tapered surface or an arcuate surface.

[0018] The present invention further provides a method for attaching and detaching the quick-detachable target connection structure for BNCT, the method comprising at least the following steps: Step 10: Lockstep, wherein the lockstep includes: Step 11: Align the lock lever with the lock body; Step 12: The driving mechanism moves the locking lever forward until the locking pin enters the locking groove, and the driving mechanism continuously pulls the locking lever backward to lock it, thereby locking the target segment and the piping segment; Step 20: an unlocking step, the unlocking step including: Step 21: The drive mechanism moves the lock lever forward until the lock pin passes over the slider via the first guide surface and enters the lock groove at the rear of the slider; Step 22: The driving mechanism moves the lock lever backward, and the lock pin acts on the second guide surface of the slider, sliding the slider forward until the first guide surface enters the accommodating groove, after which the lock pin disengages from the lock groove through the second guide surface, the lock lever disengages from the lock body, and the connection between the target segment and the piping segment is released. [Effects of the Invention]

[0019] The quick-detachable target connection structure and method for BNCT of the present invention has the following beneficial effects compared with the prior art.

[0020] (1) By using the drive mechanism to move the lock lever in the axial direction, it is possible to achieve quick connection and quick disconnection between the target segment and the piping segment, which is simple to operate and has high connection and disconnection efficiency, improving the convenience of target segment replacement in BNCT systems and vacuum system maintenance.

[0021] (2) Locking and unlocking are achieved by the extension and contraction movement of the lock lever along the axial direction based on the change in the slider position, which has a simple structure and an ingenious concept, and has changed the conventional locking and unlocking method.

[0022] (3) A pulling force is applied by the driving mechanism after locking to ensure a tighter connection between the target segment and the piping segment. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a structural schematic diagram of a quick-detachable target connection structure for BNCT according to the present embodiment. [Figure 2] FIG. 2 is a structural schematic diagram of the cross-section of the structure shown in FIG. 1. [Figure 3] FIG. 2 is a structural schematic diagram of the lock body in an exploded state according to the embodiment. [Figure 4] 3A and 3B are schematic diagrams illustrating a local structure of a lock lever according to the embodiment. [Figure 5] 5 is a structural schematic diagram of the lock lever shown in FIG. 4 in a cross-sectional state. FIG. [Figure 6] 10 is a schematic diagram of a local structure of the lock lever and slider in an assembled state in this embodiment. FIG. [Figure 7] 2A and 2B are schematic diagrams illustrating the structure of a slider according to the present embodiment. [Figure 8] FIG. 2 is a structural schematic diagram of the locking device in the embodiment in a locked state. [Figure 9] 10 is a structural schematic diagram of the locking device according to the present embodiment after the lock pin has passed over the slider during the unlocking process. FIG. [Figure 10]10 is a structural schematic diagram of the locking device in this embodiment in the unlocking process after the locking pin has moved the slider in the axial direction until the first guide surface enters the accommodating groove. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0024] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in more detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to illustrate the present invention, and are not used to limit the present invention.

[0025] In describing the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper," "lower," "front," "rear," "inner," "outer," etc. are orientations or positional relationships indicated based on the drawings, and are intended only to facilitate and simplify the present invention, and are not intended to indicate or imply that the devices or elements referred to necessarily have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be understood to limit the present invention.

[0026] In describing the present invention, it should be understood that the terms "attach," "couple," and "connect" should be broadly understood unless otherwise clearly specified or limited. For example, they may refer to a fixed connection, an integral connection, a detachable connection, internal communication between two elements, a direct connection, or an indirect connection via an intermediate member. Those skilled in the art will be able to specifically understand the specific meanings of the above terms in the present invention.

[0027] 1 and 2, the quick-detachable target connection structure for BNCT of this embodiment includes a target segment 20, a piping segment 30, and a plurality of locking devices 10 for connecting the target segment 20 and the piping segment 30. Here, the target segment 20 includes a sleeve 21 and a target body 22 located at one end of the sleeve, and a first flange 23 is provided at one end of the sleeve 21 that abuts against the piping segment 30, and correspondingly, a second flange 31 that abuts against the first flange 23 is provided at one end of the piping segment 30 that abuts against the target segment 20. Here, a sealing member (not shown) is provided between the first flange 23 and the second flange 31.

[0028] A special feature of this embodiment is that the locking device includes a locking body 11, a locking lever 12, and a driving mechanism 13, as shown in FIGS.

[0029] 3, the structure of the lock body 11 includes an inner sleeve 112 and an outer sleeve 111 that are nested together. The outer sleeve 111 has a mounting hole 111 for receiving the inner sleeve 112. 1 Preferably, the inner sleeve is provided with the mounting hole 111. 1 The fitting is tight.

[0030] In this embodiment, the inner sleeve 112 is provided with a lock hole 1121 penetrating in the axial direction, and the inner sleeve 112 is further provided with four mounting portions for mounting lock pins 113 along the circumferential direction. Preferably, in this embodiment, the mounting portions include a countersunk groove 1122 provided on the outer wall of the inner sleeve, and a pin hole 1123 penetrating radially from the countersunk groove to the lock hole 1121.

[0031] Accordingly, in this embodiment, a boss 1132 that fits into the counterbore groove 1122 is provided at the rear end of the lock pin 113. 1The lock pin 31 is inserted into the pin hole 1123 from the countersunk groove 1122, and protrudes radially from the inner wall of the lock hole 1121. Here, the lock pin is movable radially within the pin hole.

[0032] In this embodiment, the boss 1132 and the mounting hole 111 1 An elastic member 114 is installed between the inner wall of the lock pin and the lock pin to provide elastic force for elastic expansion and contraction. Preferably, the elastic member 114 is a compression spring.

[0033] Preferably, in this embodiment, the boss 1132 is further provided at one end thereof remote from the lock pin 113 with a spring receiving groove 1133 for receiving a compression spring.

[0034] In this embodiment, the free end of the lock pin 113 is provided with a first guide portion 1131 having a tapered surface or an arcuate surface.

[0035] 4 and 5, the lock lever 12 of this embodiment includes a lever body 121 and a lock head located at the end of the lever body and fitting into the lock hole 1121. One end of the lever body 121 away from the lock head is connected to a driving mechanism 13, which moves the lock lever 12 axially relative to the lock body 11. It should be noted that the driving mechanism 13 may be any existing linear driving mechanism, including, but not limited to, a linear motor, a hydraulic cylinder, or a pneumatic cylinder.

[0036] In this embodiment, the lock head includes a lock groove segment 122, an end head portion 123 located at one end of the lock groove segment, and a lock-up segment 124 located at the other end of the lock groove segment. Here, the lock groove segment 124 is provided with a lock groove 127 that accommodates the lock pin 113 projecting radially therethrough.

[0037] In this embodiment, the outer diameters of the end head portion 123 and the lock-up segment 124 are larger than the outer diameter of the lock groove segment 122, thereby forming a lock groove on the lock groove segment. It should be noted that in this embodiment, the lever body 121 and the lock-up segment 124 have different diameter structures, but of course, they may also be an integral structure with the same diameter.

[0038] In this embodiment, a second guide portion having a tapered surface or an arcuate surface is provided at the free end of the end head portion 123 to guide and engage with the first guide portion 1131 of the lock pin 113.

[0039] As shown in FIGS. 6 and 7 , a slider 14 is further fitted into the locking groove segment 122, and the slider 14 has an axial through-hole 143. The axial through-hole 143 is loosely fitted into the locking groove segment 122, axially slidingly connected to the locking groove segment 122, and can move axially relative to the locking groove segment 122.

[0040] In this embodiment, as shown in FIG. 8, in the locked state, the lock pin 113 is located in the lock groove 127 between the end head portion 123 and the slider 14, and as shown in FIGS. 9 and 10, in the unlocked state, the lock pin 113 is located in the lock groove 127 between the slider 14 and the lock-up segment 124.

[0041] In this embodiment, the slider 14 is provided with a guide surface that is fitted with the first guide portion 1131 of the lock pin 113, and as shown in Fig. 7, the guide surface includes a first guide surface 141 near one side of the end head portion 123 and a second guide surface 142 near one side of the lock-up segment 124. Here, the first guide surface 141 and the second guide surface 142 are tapered surfaces or arc surfaces.

[0042] Preferably, in this embodiment, the first guide surface 141 and the second guide surface 142 intersect at the maximum outer diameter of the slider 14, so that after being installed in this manner, the locking pin can more easily pass over the slider.

[0043] In this embodiment, as shown in Figures 4 and 5, an accommodating groove 125 for accommodating the first guide surface 141 is provided on one side of the end head portion 123 near the locking groove segment 122. The purpose of this arrangement is that, as shown in Figures 9 and 10, during the unlocking process, when the slider 14 is located between the locking pin and the end head portion, as the locking lever moves backward, the first guide surface 141 enters the accommodating groove 125, preventing the locking pin from entering between the slider and the end head portion again, thereby ensuring the reliability of the unlocking process.

[0044] Preferably, in this embodiment, as shown in FIGS. 4 to 6, an inclined transition portion 126 is provided at one end of the lock-up segment 124 close to the locking groove segment 122, which provides more space for the locking pin to enter the locking groove after the locking pin passes over the slider during the unlocking process, as shown in FIG. 9.

[0045] In this embodiment, the lock body 11 is fixedly installed on the target segment 20, and the driving mechanism 13 is fixedly installed on the piping segment 30. Similarly, the lock body 11 may be installed on the piping segment 30, and the driving mechanism 13 may be installed on the target segment 20 accordingly.

[0046] In this embodiment, the method for attaching and detaching the quick-detachable target connection structure for BNCT includes the following steps. Step 10: Lockstep, wherein the lockstep includes: Step 11: Align the lock lever with the lock body. Step 12: The driving mechanism moves the lock lever forward until the lock head enters the lock hole, where the slider is close to one side of the lock-up segment, and the second guide part of the lock head acts on the first guide part of the lock pin to move the lock pin radially outward. After the end head part of the lock head passes the lock pin, the reset action of the elastic member causes the lock pin to enter the lock groove. As shown in Figure 8, in this state, the lock pin is located in the lock groove between the end head part and the slider.

[0047] The drive mechanism then moves the lock lever rearward and continuously pulls the lock lever rearward to lock it, thereby locking the target segment and the piping segment together.

[0048] In this embodiment, the connection between the target segment and the piping segment is made tighter and more secure based on the tensile force applied by the driving mechanism, and in particular, a sealing member is installed between the first flange and the second flange, and the sealing is made more secure based on the continuous application of the tensile force.

[0049] Step 20: An unlocking step, which includes:

[0050] Step 21: The drive mechanism moves the lock lever forward, and the first guide surface of the slider acts on the first guide portion of the lock pin to move the lock pin radially outward until the slider passes over the lock pin, and the reset action of the elastic member causes the lock pin to enter the lock groove at the rear of the slider, as shown in Figure 9. In this state, the lock pin is located in the lock groove between the slider and the lock-up segment.

[0051] Step 22: The driving mechanism moves the locking lever backward, and the locking pin acts on the second guide surface of the slider, moving the slider axially toward one side of the end head until the first guide surface of the slider enters the receiving groove, as shown in Fig. 10. The driving mechanism continues to move the locking lever backward, and the second guide surface of the slider acts on the first guide portion of the locking pin, moving the locking pin radially outward until the locking pin disengages from the locking groove. After the slider and the end head sequentially pass over the locking pin, the locking head leaves the locking hole and the locking lever disengages from the locking body, thereby releasing the connection between the target segment and the piping segment.

[0052] In this embodiment, the locking device realizes the connection between the target segment and the piping segment, and can realize quick connection and quick disconnection under program control, solving the time-consuming and complicated operation of the conventional connection method, and improving the convenience of target segment replacement and vacuum system maintenance in the BNCT system.

[0053] In short, the above-described embodiments are merely preferred embodiments of the present invention, and do not limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall all be included in the protection scope of the present invention.

[0054] (Addendum) (Appendix 1) A quick-release target connection structure for BNCT, comprising a target segment, a piping segment, and a locking device for connecting the target segment and the piping segment, wherein the locking device comprises: a lock body in which a lock pin that is elastically expandable and contractible along a radial direction is installed; a locking groove that accommodates the locking pin projecting radially, a slider that slides axially into the locking groove and is connected thereto, and a locking lever having first and second guide surfaces at both ends of the slider that intersect at the maximum outer diameter of the slider; a drive mechanism for moving the lock lever in an axial direction relative to the lock body and for providing a continuous tension force in a locked state; The driving mechanism and the locking body are fixedly installed on the target segment and the piping segment, respectively, one end of the locking lever is fixedly connected to the driving mechanism, and the other end of the locking lever is a free end, and a receiving groove that fits the first guide surface is installed on one side of the locking groove close to the free end of the locking lever, and a second guide part is installed on the free end of the locking lever. A quick-detachable target connection structure for BNCT.

[0055] (Appendix 2) The lock body is provided with a lock hole that accommodates the lock lever when it protrudes in the axial direction, and at least one lock pin is provided on the inner wall of the lock hole along the circumferential direction. 2. The target connection structure according to claim 1,

[0056] (Appendix 3) The lock body includes an inner sleeve and an outer sleeve that are nested within each other, the lock hole is provided on the inner sleeve, and a mounting portion for mounting a lock pin is provided on the inner sleeve. 3. The target connection structure according to claim 2,

[0057] (Appendix 4) the mounting portion includes a counterbore groove provided on an outer wall of the inner sleeve and a pin hole that extends radially from the counterbore groove to the lock hole, and a boss that fits into the counterbore groove is provided at the rear end of the lock pin. 4. The target connection structure according to claim 3,

[0058] (Appendix 5) an elastic member is disposed between the boss and the inner wall of the outer sleeve; 5. The target connection structure according to claim 4,

[0059] (Appendix 6) A lock head is provided at the free end of the lock lever, the lock head including an end head portion, a lock groove segment, and a lock-up segment in this order, and the lock groove is located on the lock groove segment. 2. The target connection structure according to claim 1,

[0060] (Appendix 7) a sloped transition portion is provided at one end of the lock-up segment close to the lock groove segment; 7. The target connection structure according to claim 6,

[0061] (Appendix 8) The slider is fitted onto the locking groove segment. 7. The target connection structure according to claim 6,

[0062] (Appendix 9) The drive mechanism includes a linear motor, a hydraulic cylinder, or a pneumatic cylinder. 2. The target connection structure according to claim 1,

[0063] (Appendix 10) The first guide surface and the second guide surface are tapered surfaces or arcuate surfaces. 2. The target connection structure according to claim 1,

[0064] (Appendix 11) A first guide portion is installed at the free end of the lock pin. 11. A target connection structure according to any one of appendices 1 to 10, characterized in that:

[0065] (Appendix 12) A tapered surface or an arcuate surface is provided on the first guide portion and / or the second guide portion, 12. The target connection structure according to claim 11,

[0066] (Appendix 13) A method for attaching and detaching a quick-detachable target connection structure for BNCT according to any one of Supplementary Notes 1 to 12, the method comprising at least the following steps: Step 10: Lockstep, wherein the lockstep includes: Step 11: Align the lock lever with the lock body; Step 12: The driving mechanism moves the locking lever forward until the locking pin enters the locking groove, and the driving mechanism continuously pulls the locking lever backward to lock it, thereby locking the target segment and the piping segment; Step 20: an unlocking step, the unlocking step including: Step 21: The drive mechanism moves the lock lever forward until the lock pin passes over the slider via the first guide surface and enters the lock groove at the rear of the slider; Step 22: The driving mechanism moves the lock lever backward, and the lock pin acts on the second guide surface of the slider to slide the slider forward until the first guide surface enters the accommodating groove, and then the lock pin disengages from the lock groove through the second guide surface, the lock lever disengages from the lock body, and the connection between the target segment and the piping segment is released. [Explanation of symbols]

[0067] 10 Locking device 11 Lock body 111 Outer sleeve 1111 Mounting hole 112 Inner sleeve 1121 Lock hole 1122 Counterbore 1123 Pin hole 113 Lock pin 1131 Guide part 1132 Boss 1133 Storage groove 12 Lock lever 121 Lever body 122 Lock groove segment 123 End head part 124 Lock-up Segments 127 Lock groove 13 Drive mechanism 14 Slider 141 First guide surface 142 Second guide surface 143 Through Hole 20 Target Segments 21 Sleeve 22 Target body 23 First flange 30 pipe segments 31 Second flange

Claims

1. 1. A quick disconnect target connection structure for BNCT, comprising a target segment, a piping segment, and a locking device for connecting the target segment and the piping segment, wherein the locking device comprises: a lock body in which a lock pin that is elastically expandable and contractible along a radial direction is installed; a locking groove that accommodates the locking pin projecting radially, a slider that slides axially into the locking groove and is connected thereto, and a locking lever having first and second guide surfaces at both ends of the slider that intersect at the maximum outer diameter of the slider; a drive mechanism for moving the lock lever in an axial direction relative to the lock body and for providing a continuous tension force in a locked state; The driving mechanism and the locking body are fixedly installed on the target segment and the piping segment, respectively, one end of the locking lever is fixedly connected to the driving mechanism, and the other end of the locking lever is a free end, and a receiving groove that fits the first guide surface is installed on one side of the locking groove close to the free end of the locking lever, and a second guide part is installed on the free end of the locking lever. A quick disconnect target connection structure for BNCT.

2. The lock body is provided with a lock hole for receiving the lock lever when it is inserted in the axial direction, and at least one lock pin is provided on the inner wall of the lock hole along the circumferential direction.

2. The target connection structure according to claim 1.

3. The lock body includes an inner sleeve and an outer sleeve that are nested within each other, the lock hole is provided on the inner sleeve, and a mounting portion for mounting a lock pin is provided on the inner sleeve.

3. The target connection structure according to claim 2.

4. the mounting portion includes a counterbore groove provided on an outer wall of the inner sleeve and a pin hole that extends radially from the counterbore groove to the lock hole, and a boss that fits into the counterbore groove is provided at the rear end of the lock pin.

4. The target connection structure according to claim 3.

5. an elastic member is disposed between the boss and the inner wall of the outer sleeve; 5. The target connection structure according to claim 4.

6. A lock head is provided at the free end of the lock lever, the lock head including an end head portion, a lock groove segment, and a lock-up segment in this order, and the lock groove is located on the lock groove segment.

2. The target connection structure according to claim 1.

7. a sloped transition portion is provided at one end of the lock-up segment close to the lock groove segment; 7. The target connection structure according to claim 6.

8. The slider is fitted onto the locking groove segment.

7. The target connection structure according to claim 6.

9. The drive mechanism includes a linear motor, a hydraulic cylinder, or a pneumatic cylinder.

2. The target connection structure according to claim 1.

10. the first guide surface and the second guide surface are tapered surfaces or arcuate surfaces; 2. The target connection structure according to claim 1.

11. A first guide portion is provided at the free end of the lock pin.

11. The target connection structure according to claim 1.

12. A tapered surface or an arcuate surface is provided on the first guide portion and / or the second guide portion.

12. The target connection structure according to claim 11.

13. A method for attaching and detaching a quick-detachable target connection structure for BNCT according to any one of claims 1 to 12, said method comprising at least the following steps: Step 10: Lockstep, said lockstep including: Step 11: Align the lock lever with the lock body; Step 12: The driving mechanism moves the locking lever forward until the locking pin enters the locking groove, and the driving mechanism continuously pulls the locking lever backward to lock it, thereby locking the target segment and the piping segment; Step 20: an unlocking step, the unlocking step including: Step 21: The drive mechanism moves the lock lever forward until the lock pin passes over the slider via the first guide surface and enters the lock groove at the rear of the slider; Step 22: The driving mechanism moves the locking lever backward, and the locking pin acts on the second guide surface of the slider to slide the slider forward until the first guide surface enters the accommodating groove, and then the locking pin disengages from the locking groove through the second guide surface, the locking lever disengages from the locking body, and the connection between the target segment and the piping segment is released.

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