CN217625576U - Fastener picking and placing device - Google Patents

Abstract

The utility model relates to a fastener taking and placing device, which comprises a hanging rod, an execution rod and a core rod; the boom includes a first body; the first body comprises a first end and a second end, and the first end and the second end are arranged oppositely; the actuating rod comprises a second body and an actuating part; the second body comprises a third end and a fourth end, the third end and the fourth end are oppositely arranged, and the third end is connected with the second end; the executing part is arranged at the fourth end and is used for hooking and lifting a fastening piece; the core rod can reciprocate along the axial direction of the suspension rod and the execution rod, one end of the core rod penetrates out from the fourth end to be connected with the fastening piece, the fastening piece can be remotely taken, placed and transferred in a long and narrow space, and the fastening piece can be prevented from falling off in the taking, placing and transferring processes. The fastener taking and placing device is simple in structure, simple and convenient to operate, wide in application range, strong in operability and high in safety performance.

Description

Fastener picking and placing device

Technical Field

The utility model relates to a fastener dismouting field, more specifically say, relate to a fastener is got and is put device.

Background

The nuclear power plant generally needs to install or overhaul some equipment in some long and narrow spaces, but the fastener of the related art is got and is put device and is generally applicable to the space that is short and spacious, under long and narrow space, usually can't carry out the fastener and get and put, and application scope is narrower, and maneuverability is not strong, and the fastener drops easily when getting and putting the fastener, and the security performance is lower.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, a modified fastener is got and is put device is provided.

The utility model provides a technical scheme that its technical problem adopted is: constructing a fastener taking and placing device, which comprises a hanging rod, an execution rod and a core rod;

the boom includes a first body; the first body comprises a first end and a second end, and the first end and the second end are arranged oppositely;

the actuating rod comprises a second body and an actuating part; the second body comprises a third end and a fourth end, the third end and the fourth end are oppositely arranged, and the third end is connected with the second end; the execution part is arranged at the fourth end and used for hooking and lifting a fastening piece.

The core rod is arranged in a reciprocating mode along the axial direction of the suspension rod and the execution rod, and one end of the core rod penetrates out of the fourth end to be connected with the fastening piece.

In some embodiments, the first body and the second body are hollow structures with two ends penetrating.

In some embodiments, the second body is circular in cross-section;

the executing part comprises a hook head, and the hook head extends from the fourth end along the axial direction of the second body to the direction far away from the second body and then extends along the radial direction of the second body.

In some embodiments, the hook head comprises a connecting section and an actuating section; the connecting section extends along the axial direction of the second body along the side wall of the second body, the executing section is connected to one end, far away from the second body, of the connecting section and extends towards the axial direction of the second body along the radial direction of the second body, and the extending length is smaller than or equal to the radial dimension of the second body.

In some embodiments, the boom further comprises a first connecting structure disposed at the second end;

the executive rod further comprises a second connecting structure, the second connecting structure is arranged on the second body and close to the third end and is used for being connected with the first connecting structure.

In some embodiments, the boom further comprises a positioning shaft disposed at the second end of the first body and extending in an axial direction of the first body in a direction away from the first body for insertion disposition from the third end of the second body.

In some embodiments, the boom further comprises a first locating feature comprising a locating boss disposed on the locating shaft;

the actuating rod further comprises a second positioning structure, and the second positioning structure comprises a positioning groove; the positioning groove is arranged at the third end of the second body and is used for being matched with the positioning boss.

In some embodiments, the core pin comprises a first core pin and a second core pin; two ends of the first core rod penetrate through the first end and the second end of the hanging rod; the second core rod is detachably connected to one end of the first core rod, and the second core rod can penetrate out of the fourth end.

In some embodiments, the first core rod and the second core rod are provided with connecting and positioning structures;

the connecting and positioning structure comprises a positioning anti-rotation platform and a positioning anti-rotation groove; the positioning rotation prevention table is arranged on the first core rod; the positioning anti-rotation groove is arranged on the second core rod, corresponds to the positioning anti-rotation platform and is used for being matched and positioned with the positioning anti-rotation platform.

In some embodiments, the device further comprises an operating handle, the operating handle penetrates from the first body or the second body and is connected with the core rod, and the operating handle is used for driving the core rod to reciprocate along the axial direction of the first body or the second body and rotate along the circumferential direction of the first body or the second body.

The first body and/or the second body are/is provided with a guide hole for guiding the operation of the operating handle.

Implement the utility model discloses a fastener is got and is put device has following beneficial effect: the fastener taking and placing device is characterized in that the execution rod is connected to the second end of the suspension rod, the execution part is arranged at the fourth end of the second body of the execution rod, so that a fastener can be hooked and lifted, the core rod can reciprocate along the axial directions of the suspension rod and the execution rod, one end of the core rod penetrates out of the fourth end, so that the core rod can be rotatably connected with the fastener, the fastener can be taken and placed and transferred remotely in a narrow space, and the fastener can be prevented from falling off in the taking, placing and transferring processes. The fastener taking and placing device is simple in structure, simple and convenient to operate, wide in application range, strong in operability and high in safety performance.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic structural view of a fastener picking and placing device according to some embodiments of the present invention;

FIG. 2 is a cross-sectional view of the fastener delivery device of FIG. 1;

FIG. 3 is a schematic view of a boom of the fastener delivery apparatus of FIG. 1;

FIG. 4 is a schematic view of an actuating shaft of the fastener delivery device of FIG. 1;

FIG. 5 is a schematic illustration of the core pin of the fastener delivery device of FIG. 1;

FIG. 6 is a schematic view of the fastener retrieving and placing device of FIG. 1 for retrieving and placing fasteners;

FIG. 7 is another schematic view of the fastener retrieving and placing device of FIG. 1 retrieving and placing fasteners.

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, the embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 illustrates some preferred embodiments of the fastener delivery device of the present invention. The fastener access device can be used for accessing the fastener 100 in a narrow space, namely, remotely accessing the fastener 100; in some embodiments, the fastener 100 may be a screw, and it is understood that in other embodiments, the fastener 100 may not be limited to being a screw, and in other embodiments, the fastener 100 may be a nut, a disc spring washer set.

As shown in FIG. 1, in some embodiments, the fastener delivery device includes a hanger bar 10, an actuating rod 20, and a core rod 30. In some embodiments, the boom 10 is used for lifting equipment, and thus the entire device, in practice. In some embodiments, the actuating rod 20 is removably coupled to the hanger rod 10 for performing access, positioning, and securing of the fastener 100. By detachably coupling the actuating shaft 20 to the suspension rod 10, the fastener retrieving and placing device is not only suitable for remotely retrieving and placing the fasteners 100, but also suitable for retrieving and placing the fasteners 100 within a short distance, and the storage of the whole device is facilitated. The hanger bar 10 can be removed, i.e., short-size storage and long-size use, when short access to the fasteners 100 or storage of the device is required. In some embodiments, the core rod 30 is inserted into the suspension rod 10 and the actuating rod 20, and is inserted into the head of the fastener 100 to press the fastener 100 against the hook 221, so as to prevent the fastener 100 from falling off during handling and transferring.

Further, as shown in fig. 2 and 3, in some embodiments, the hanger bar 10 includes a first body 11; the first body 11 is a cylindrical structure with a circular cross section, the first body 11 is a hollow structure with two through ends, a first channel 111 can be formed on the inner side, and the first channel 111 is used for the penetration of the core rod 30 for the movement guidance and the circumferential positioning of the core rod 30. In some embodiments, the first body 11 includes a first end 11a and a second end 11b; the first end 11a and the second end 11b are provided to face each other and penetrate therethrough.

In some embodiments, the suspension rod 10 further includes a first connecting structure 12, and the first connecting structure 12 is disposed on the first body 11 and located at the second end 11b. The first connecting structure 12 is a movable and rotatable structure, and in particular, in some embodiments, the first connecting structure 12 may be a nut. The first body 11 can be detachably connected with the actuating rod 20 through the first connecting structure 12.

In some embodiments, the suspension rod 10 further includes a positioning shaft 13, and the positioning shaft 13 is disposed at the second end 11b and can extend in a direction away from the first body 11 along the axial direction of the first body 11. In some embodiments, the positioning shaft 13 may be tapered cylindrical. The positioning shaft 13 is used for positioning and mounting the first body 11 and the actuating rod 20. Specifically, when the positioning shaft 13 is installed, the positioning shaft can be inserted into the actuating rod 20 to position the actuating rod 20, so that the quick centering of the suspension rod 10 and the actuating rod 20 can be realized.

In some embodiments, the boom 10 further comprises a hoist assembly 14, the hoist assembly 14 comprising a hoist ring 141, and a connector 142. The hanging ring 141 is connected to the first body 11 through the connecting member 142 and is disposed near the first end 11a of the first body 11. This rings 141 can be connected with hoisting equipment, and when the site operation of being convenient for, hoisting equipment hoists and realizes the whole device transport operation to use manpower sparingly, make the operation process safe and reliable. The connecting member 142 may be a bolt that can be screwed with the first body 11 through the hanging ring 141. In some embodiments, the connecting member 142 can be omitted, and the hanging ring 141 can be welded to the first body 11 and fixedly connected to the first body 11.

In some embodiments, the suspension rod 10 further comprises a first positioning structure 15, the first positioning structure 15 is disposed on the positioning shaft 13 for positioning the suspension rod 10 and the actuating rod 20, and can prevent the suspension rod 10 and the actuating rod 20 from rotating relatively. In some embodiments, the first positioning structure 15 may include a positioning boss disposed on the positioning shaft 13, specifically protruding from the outer surface of the positioning shaft 13, and disposed near the second end 11b of the first body 11. The cross section of the positioning boss can be an arc surface, which can extend along the circumferential direction of the positioning shaft 13, and the extending length is less than the perimeter of the positioning shaft 13.

Further, as shown in fig. 2 and 4, in some embodiments, the actuating rod 20 is connected to the second end 11b of the suspension rod 10; in some embodiments, the actuating rod 20 comprises a second body 21; the second body 21 is a cylindrical structure with a circular cross section, the second body 21 is a hollow structure, a second channel 211 can be formed on the inner side of the second body, and the second channel 211 is used for the core rod 30 to penetrate through and is used for the movement guidance and the circumferential positioning of the core rod 30. In some embodiments, the second body 21 includes a third end 21a and a fourth end 21b. The third end 21a and the fourth end 21b can be disposed opposite to each other, and the third end 21a and the fourth end 21b can be penetrated through each other. The third end 21a of the second body 21 is connected to the second end 11b of the first body 11.

In some embodiments, the actuating rod 20 further includes an actuating portion 22, the actuating portion 22 is disposed at the fourth end 21b, and the actuating portion 22 is used for hooking and lifting the fastening member 100, and simultaneously, the core rod 30 is convenient for pressing the fastening member 100, so as to prevent the fastening member 100 from falling off during the moving process. In some embodiments, the implement portion 22 includes a hook 221 and a socket 222. The hook head 221 may be substantially L-shaped, and may support the fastening member 100 in a vertical direction and may separate and hook the fastening member 100 in a horizontal direction. Of course, it is understood that in other embodiments, the hook head 221 may not be limited to being L-shaped. In some embodiments, the hook head 221 can extend from the fourth end 21b in a direction away from the second body 21 along the axial direction of the second body 21 and in a radial direction of the second body 21. Specifically, the hook head 221 includes a connecting segment 2211 and an actuating segment 2212. The connecting section 2211 can extend along the axial direction of the second body 21 along the side wall of the second body 21, and the actuating section 2212 is connected to one end of the connecting section 2211 away from the second body 21 and extends along the radial direction of the second body 21 towards the axial direction of the second body 21, and the extending length of the actuating section 2212 can be smaller than or equal to the radial dimension of the second body 21, so that the overall radial length of the fastener taking and placing device can be reduced, the fastener taking and placing device is slender, and further the fastener 100 can be taken and placed remotely in a narrow space, and the taking and placing of a screw and a disc spring washer group can be implemented remotely in an irradiation environment and a narrow space. The hook head 221 can realize the simultaneous taking and placing of the screw and the disc spring washer group. In some embodiments, the actuation segment 2212 may be wedge-shaped. Of course, it is understood that in other embodiments, the actuator segment 2212 may not be limited to being wedge-shaped.

Further, in some embodiments, the actuating rod 20 further includes a second connecting structure 23, the second connecting structure 23 is disposed on the second body 21 and near the third end 21a, and the actuating rod 20 can be detachably connected to the suspension rod 10 by disposing the second connecting structure 23 to connect with the first connecting structure 12. In some embodiments, the second connecting structure 23 is an external thread structure disposed on an outer sidewall of the second body 21 and near the third end 21a, and can be screwed with the nut of the first body 11.

Further, in some embodiments, the actuating rod 20 further includes a second positioning structure 24, the second positioning structure 24 is disposed at the third end 21a of the second body 21, and in some embodiments, the second positioning structure 24 is a positioning slot; the positioning slot is disposed at the third end 21a of the second body 21, and specifically, the positioning slot is formed by a notch opened downward on an end wall of the second body 21 located at the third end 21 a. The positioning groove may be disposed corresponding to the positioning boss of the first positioning structure 15 for positioning in cooperation with the positioning boss, so as to prevent relative rotation of the actuating rod 20 and the core rod 10.

Further, as shown in fig. 5, in some embodiments, the core rod 30 may be reciprocally disposed along the axial direction of the suspension rod 10 and the actuating rod 20, and may be rotatably disposed. One end of the core rod 30 can penetrate out from the fourth end 21b and can be connected with the fastener 100 to press the fastener 100 and prevent the fastener 100 from falling off. In some embodiments, the core pin 30 includes a first core pin 30a and a second core pin 30b. The first core rod 30a is disposed on the suspension rod 10, and two ends thereof can respectively penetrate through the first end 11a and the second end 11b. The second core rod 30b is disposed on the actuating rod 20, and one end of the second core rod can be detachably connected to one end of the first core rod 30a, and the other end of the second core rod can pass through the fourth end 21b of the actuating rod 20. The second core rod 30b may be inserted into the fastener 100, and specifically, the second core rod 30b may be inserted into a socket head hole of the screw to limit horizontal displacement of the screw, and after the fastener taking and placing device takes and places the screw, the core rod 30 is moved out of the socket head hole of the screw to be separated from the screw.

Further, in some embodiments, the first core rod 30a and the second core rod 30b are provided with a connecting and positioning structure 30c; the first core rod 30a and the second core rod 30b can be connected and positioned through the connecting and positioning structure 30c, and then the first core rod 30a and the second core rod 30b can be detachably connected, so that the fastener taking and placing device can be conveniently used and stored in a short distance. In some embodiments, the connecting and positioning structure 30c includes a positioning anti-rotation plate 31 and a positioning anti-rotation slot 32. The positioning rotation-preventing table 31 is disposed on the first core bar 30a and protrudes in the axial direction of the second core bar 30b toward the splicing direction of the second core bar 30b. The positioning rotation-preventing groove 32 is disposed on the second core bar 30b, and specifically, the positioning rotation-preventing groove 32 is disposed on the outer side wall of the second core bar 30b, and is close to the end of the second core bar 30b connected to the first core bar 30a, and is disposed corresponding to the positioning rotation-preventing table 31, so as to be capable of being matched with the positioning rotation-preventing table 31 for positioning. When the first core bar 30a and the second core bar 30b are connected, the positioning rotation-preventing platform 31 can be inserted into the positioning rotation-preventing slot 32, and the first core bar 30a and the second core bar 30b can simultaneously bear tension, pressure and torque.

Further, in some embodiments, the fastener delivery device further comprises an operating handle 40, and the operating handle 40 may comprise a first operating handle 40a and a second operating handle 40b; the first operating handle 40a is disposed corresponding to the first core rod 30a, and the second operating handle 40b is disposed corresponding to the second core rod 30b. Of course, it will be appreciated that in other embodiments, the operating handle 40 is not limited to including two operating handles. In other embodiments, there may be one operating handle 40. Specifically, the first operating handle 40a can penetrate from the first body 11 to connect with the first core rod 30a for driving the first core rod 30a to reciprocate along the axial direction of the suspension rod 10 and rotate along the circumferential direction of the suspension rod 10, and specifically, the first operating handle 40a can be welded and fixed with the first core rod 30 a. The second operating handle 40b can penetrate from the second body 21 to be connected with the second core bar 30b, and is used for driving the second core bar 30b to reciprocate along the axial direction of the second body 21 and rotate along the circumferential direction of the second body 21, and specifically, the second operating handle 40b can be welded and fixed with the second body 21.

In some embodiments, the first body 11 and/or the second body 21 may be provided with a guide hole 112,212 for guiding the operation handle 40. Specifically, the guide holes 112,212 may include a first guide hole 112 and a second guide hole 212, the first guide hole 112 may be used to guide the first operating handle 40a, and the first operating handle 40a penetrates from the first guide hole 112 to be coupled with the first core rod 30 a. The second guiding hole 212 can be used to guide the second operating handle 40b, and the second operating handle 40b penetrates from the second guiding hole 212 to be connected with the second core rod 30b.

In some embodiments, the first guiding hole 112 may be opened on a side wall of the first body 11, and includes a first guiding portion 1121 and a second guiding portion 1122, the first guiding portion 1121 is a strip-shaped hole, and the first guiding portion 1121 extends along an axial direction of the first body 11. The number of the second guiding portions 1122 may be two, and the two second guiding portions 1122 may be respectively located at two ends of the first guiding portion 1121, and respectively extend along the circumferential direction of the suspension rod 10, and the extending length thereof may be smaller than the circumference of the suspension rod 10.

In some embodiments, the second guiding hole 212 may be opened on a sidewall of the second body 21, and includes a third guiding portion 2121 and a fourth guiding portion 2122. The third guide portion 2121 is a strip-shaped hole, and the third guide portion 2121 may extend along the axial direction of the second body 21. The number of the fourth guiding portions 2122 is two, and the two fourth guiding portions 2122 can be respectively located at two ends of the third guiding portion 2121 and respectively extend along the circumferential direction of the actuating rod 20, and the extending length thereof can be smaller than the circumference of the actuating rod 20.

As shown in fig. 6 and 7, taking the fastener 100 as an example of a screw, when the screw is placed remotely, the fastener taking and placing device may be moved to a height that can be operated by a person, the screw is manually placed in the "L" shaped hook 221 at the end of the device, the first operating handle 40a and/or the second operating handle 40b is operated, so that the second core rod 30b is inserted into the hexagonal hole in the screw, the fastener taking and placing device is integrally moved to above the corresponding screw hole, the fastener taking and placing device is slowly placed, the screw is inserted into the hole of the screw where the fastener taking and placing device is needed, the first operating handle 40a is operated, so that the second core rod 30b is separated from the hexagonal hole in the screw, and simultaneously the first operating handle 40a is rotated to the second guide 1122, the device is slowly moved in the horizontal direction, the "L" shaped hook 221 at the end of the device is separated from the screw, and the screw is left in the screw hole, thereby completing the screw placing operation.

When the screw is taken remotely (the screw is unscrewed from the screw hole and completely separated but not taken away), the fastener taking and placing device can be moved to the position close to the side face of the screw, the fastener taking and placing device is rotated to enable the opening direction of the tail end L-shaped hook head 221 to be aligned with the screw, the L-shaped hook head 221 is lowered to be lower than the head of the screw, the fastener taking and placing device is slowly and horizontally moved to be close to the screw, the screw is shoveled up through the L-shaped hook head 221, the first operating handle 40a is operated, the second core rod 30b is inserted into the hexagonal hole in the screw, the fastener taking and placing device is slowly lifted, and the screw is taken away through the fastener taking and placing device.

The fastener taking and placing device has the following advantages:

the fastener taking and placing device solves the problem of taking and placing the remote fastener 100 (such as a screw and disc spring washer group) in an irradiation environment and a narrow space;

the fastener taking and placing device realizes the simultaneous taking and placing of the screw and the disc spring washer group through the design of the hook head 221;

the fastener taking and placing device can use light-weight density materials, and the personnel can operate the device more conveniently;

the fastener taking and placing device is applied to ergonomics and has strong operability;

the fastener taking and placing device is provided with a structure with a large length-thin ratio, so that the use in a narrow space is met, and meanwhile, the first connecting structure 12 and the second connecting structure 23 are quickly connected, so that the device can be stored in a short size and used in a long size;

the fastener taking and placing device is used for constructing a movable core rod 30, and when screws are transported, the core rod 30 is inserted into the hexagon socket holes in the screws to limit the horizontal displacement of the screws and prevent the screws from falling.

It is to be understood that the foregoing examples merely represent preferred embodiments of the present invention, and that the description thereof is more specific and detailed, but not intended to limit the scope of the invention; it should be noted that, for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims (10)

1. The fastener taking and placing device is characterized by comprising a hanging rod (10), an execution rod (20) and a core rod (30);

the boom (10) comprises a first body (11); the first body (11) comprises a first end (11 a) and a second end (11 b), the first end (11 a) being arranged opposite to the second end (11 b);

the actuating lever (20) comprises a second body (21) and an actuating part (22); the second body (21) comprises a third end (21 a) and a fourth end (21 b), the third end (21 a) and the fourth end (21 b) are arranged oppositely, and the third end (21 a) is connected with the second end (11 b); the execution part (22) is arranged at the fourth end (21 b) and is used for hooking and lifting a fastening piece (100);

the core rod (30) is arranged in a reciprocating mode along the axial direction of the suspension rod (10) and the execution rod (20), and one end of the core rod penetrates out of the fourth end (21 b) to be connected with the fastening piece (100).

2. Fastener-picking and placing device according to claim 1, characterized in that the first body (11) and the second body (21) are hollow structures with two ends through.

3. Fastener delivery apparatus according to claim 1, wherein the second body (21) is circular in cross-section;

the executing part (22) comprises a hook head (221), and the hook head (221) extends from the fourth end (21 b) along the axial direction of the second body (21) to the direction far away from the second body (21) and further along the radial direction of the second body (21).

4. Fastener access device according to claim 3, wherein the hook head (221) comprises a connecting section (2211) and an actuation section (2212); the connecting section (2211) extends along the axial direction of the second body (21) along the side wall of the second body (21), and the actuating section (2212) is connected to one end of the connecting section (2211) far away from the second body (21) and extends along the radial direction of the second body (21) towards the axial direction of the second body (21) and has a length less than or equal to the radial dimension of the second body (21).

5. Fastener-picking apparatus according to claim 1, characterised in that the boom (10) further comprises a first connecting structure (12), the first connecting structure (12) being provided at the second end (11 b);

the actuating lever (20) further comprises a second connecting structure (23), and the second connecting structure (23) is arranged on the second body (21) and close to the third end (21 a) and is used for being connected with the first connecting structure (12).

6. Fastener delivery apparatus according to claim 1, wherein the boom (10) further comprises a positioning shaft (13), the positioning shaft (13) being disposed at the second end (11 b) of the first body (11) and extending in an axial direction of the first body (11) in a direction away from the first body (11) for insertion disposition from the third end (21 a) of the second body (21).

7. Fastener-picking and placing device according to claim 6, characterized in that the boom (10) further comprises a first positioning structure (15), the first positioning structure (15) comprising a positioning boss provided on the positioning shaft (13);

the actuating lever (20) further comprises a second locating structure (24), the second locating structure (24) comprising a locating slot; the positioning groove is arranged at the third end (21 a) of the second body (21) and is used for being matched with the positioning boss.

8. The fastener delivery apparatus of claim 1, wherein the core (30) comprises a first core (30 a) and a second core (30 b); both ends of the first core rod (30 a) are pierced from the first end (11 a) and the second end (11 b) of the boom (10); the second core rod (30 b) is detachably connected to one end of the first core rod (30 a), and the second core rod (30 b) can penetrate out of the fourth end (21 b).

9. Fastener delivery apparatus according to claim 8, wherein the first core rod (30 a) and the second core rod (30 b) are provided with a connecting and locating structure (30 c);

the connecting and positioning structure (30 c) comprises a positioning anti-rotation platform (31) and a positioning anti-rotation groove (32); the positioning anti-rotation platform (31) is arranged on the first core rod (30 a); the positioning anti-rotation groove (32) is arranged on the second core rod (30 b), corresponds to the positioning anti-rotation table (31), and is used for being matched and positioned with the positioning anti-rotation table (31).

10. The fastener taking and placing device according to claim 1, further comprising an operating handle (40), wherein the operating handle (40) penetrates from the first body (11) or the second body (21) to be connected with the core rod (30) and is used for driving the core rod (30) to reciprocate along the axial direction of the first body (11) or the second body (21) and rotate along the circumferential direction of the first body (11) or the second body (21);

the first body (11) and/or the second body (21) are/is provided with guide holes (112, 212) for guiding the operation of the operating handle (40).

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