CN220226756U - Auxiliary tool for hoisting pipe fitting - Google Patents

Abstract

The application discloses appurtenance for pipe fitting hoist and mount relates to oil gas instrument field. An auxiliary tool for pipe hoisting, comprising: a connecting end; the connecting end head comprises a plurality of slips, a driving rod and a mounting seat; the slips are arranged around the driving rod in a surrounding mode and are respectively and movably connected with the mounting seat; each slip is provided with a first contact surface, and one end of the driving rod is provided with a second contact surface; the driving rod is connected with the mounting seat and can move relative to the mounting seat; in the first state, the second contact surface is respectively abutted with the first contact surface of each slip, so that each slip is respectively unfolded away from the driving rod; in the second state, the second contact surface is separated from the first contact surface of each slip, and each slip can be folded towards the driving rod. The method and the device can at least solve the problems that the risk of the mode of inserting the coiled tubing into the injector is high at present.

Description

Auxiliary tool for hoisting pipe fitting

Technical Field

The application belongs to oil gas instrument technical field, concretely relates to appurtenance for pipe fitting hoist and mount.

Background

Before operation, the coiled tubing process needs to insert the coiled tubing between chains in the injector, and the coiled tubing is driven to move up and down by the rotary motion of the chains. The main modes adopted at present are as follows: the coiled tubing is inserted into the injector by pulling on the crane and constant adjustment by personnel standing on the injector.

The process of inserting the coiled tubing into the injector requires a plurality of persons to ascend, so that the working efficiency is reduced, and the working risk is increased.

Disclosure of Invention

The embodiment of the application aims to provide an auxiliary tool for hoisting a pipe fitting, which at least can solve the problems that the mode of inserting a coiled tubing into an injector is high in risk and the like at present.

In order to solve the technical problems, the application is realized as follows:

the embodiment of the application provides an appurtenance for pipe fitting hoist and mount, include: a connecting end;

the connecting end head comprises a plurality of slips, a driving rod and a mounting seat;

the slips are arranged around the driving rod in a surrounding mode and are respectively and movably connected with the mounting seat;

each slip is provided with a first contact surface, and one end of the driving rod is provided with a second contact surface;

the driving rod is connected with the mounting seat and can move relative to the mounting seat;

in a first state, the second contact surface is respectively abutted with the first contact surface of each slip, so that each slip is respectively unfolded away from the driving rod;

in a second state, the second contact surface is separated from the first contact surface of each slip, and each slip can be folded towards the driving rod.

In this embodiment, can make the second contact surface of actuating lever one end department and the first contact surface butt of every slips through forward motion actuating lever, make each slips for the mount pad activity to can make a plurality of slips deviate from the actuating lever and expand, that is, make a plurality of slips outwards prop up, and then can make the outside of slips support with the inner wall of oil pipe tightly, drive oil pipe and remove together through tractive appurtenance, in order to insert oil pipe into the injector. After the oil pipe is inserted into the injector, the second contact surface at one end of the driving rod can be separated from the first contact surface by reversely moving the driving rod, and at this time, each slip can be folded towards the driving rod respectively, that is, the slips can be folded inwards, and then the outer side of each slip can be separated from the inner wall of the oil pipe, so that the auxiliary tool can be detached from the oil pipe conveniently. Based on the setting, can be directly with oil pipe connection through using appurtenance to through the hoist and mount to oil pipe that can realize to appurtenance application of force, in order to insert oil pipe to the injector, and need not a plurality of personnel's cooperation operation of ascending a height, thereby can improve oil pipe and insert the operating efficiency to the injector, and reduced the operation risk.

Drawings

FIG. 1 is a schematic view of the overall structure of an auxiliary tool disclosed in an embodiment of the present application;

FIG. 2 is a schematic structural view of a connection terminal according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a connection section disclosed in an embodiment of the present application;

FIG. 4 is a schematic view of a structure of a universal joint disclosed in an embodiment of the present application;

fig. 5 is a schematic structural view of a guide tip according to an embodiment of the present application.

Reference numerals illustrate:

100-connecting ends;

110-slips; 111-a first contact surface; 112-a claw;

120-driving rod; 121-an extrusion head; 1211-a second contact surface; 122-external threads;

130-a mounting base;

140-a first housing;

150-a second housing;

160-rotating the connection;

170-a first stop;

180-a second limiting piece;

200-connecting sections; 210-a first mounting hole; 220-a second mounting hole;

300-universal joint; 310-a first mounting bar; 320-a second mounting bar;

400-guiding end head; 410-a third mounting hole; 420-fourth mounting holes;

500-fasteners.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings by means of specific embodiments and application scenarios thereof.

Referring to fig. 1 to 5, an embodiment of the application discloses an auxiliary tool for hoisting a pipe, which is applied to components with cavities such as a pipe, a barrel, and the like, so as to hoist and pull the components such as the pipe, the barrel, and the like. In the embodiment of the present application, the description may be given by taking an oil pipe as an example, and specifically may be a coiled oil pipe. The disclosed auxiliary tool includes a connection head 100, the connection head 100 being adapted for connection with a tubing.

Referring to fig. 2, in some embodiments, the connection head 100 includes a plurality of slips 110, a drive rod 120, and a mount 130. The slips 110 are disposed around the driving rod 120 and are movably connected with the mounting seat 130, each slip 110 is provided with a first contact surface 111, one end of the driving rod 120 is provided with a second contact surface 1211, and the first contact surface 111 and the second contact surface 1211 can be contacted and extruded or separated from each other.

To apply a force to the plurality of slips 110 to enable the slips 110 to be connected to the tubing, in this embodiment, the drive rod 120 is coupled to the mount 130 and moveable relative to the mount 130 such that the relative positional relationship between the second contact surface 1211 and the first contact surface 111 can be switched as the drive rod 120 moves relative to the mount 130 to facilitate connection of the slips 110 to the tubing or disconnection of the slips 110 from the tubing.

Based on this, in the first state, the second contact surface 1211 is respectively abutted against the first contact surface 111 of each slip 110, so that each slip 110 is unfolded away from the driving rod 120, and the outer side of each slip 110 is abutted against the inner wall of the oil pipe, so that the connection between the slips 110 and the oil pipe is realized.

In the second state, the second contact surface 1211 is separated from the first contact surface 111 of each slip 110, and each slip 110 is retractable toward the driving rod 120, so that the outer side of each slip 110 is separated from the inner wall of the oil pipe, and further, the auxiliary tool can be conveniently separated from the oil pipe.

In this embodiment, the second contact surface 1211 at one end of the driving rod 120 can be abutted with the first contact surface 111 of each slip 110 by moving the driving rod 120 forward, so that each slip 110 moves relative to the mounting seat 130, and the slips 110 can be unfolded away from the driving rod 120, that is, the slips 110 can be outwards spread, and the outer side of the slips 110 can be tightly abutted against the inner wall of the oil pipe, and the oil pipe is driven to move together by the traction auxiliary tool, so that the oil pipe is inserted into the injector. After the tubing is inserted into the injector, the second contact surface 1211 at one end of the drive rod 120 may be separated from the first contact surface 111 by reversing the movement of the drive rod 120, at which time each of the slips 110 may be retracted toward the drive rod 120, i.e., the slips 110 may be retracted inwardly, and the outside of each slip 110 may be disengaged from the inside wall of the tubing, to facilitate removal of the auxiliary tool from the tubing. Here, the above-described forward direction and reverse direction are intended to indicate that the directions of the two movements of the driving lever 120 are opposite, and the specific direction of the movements is not limited.

Based on the setting, can be directly with oil pipe connection through using appurtenance to through the hoist and mount to oil pipe that can realize to appurtenance application of force, in order to insert oil pipe to the injector, and need not a plurality of personnel's cooperation operation of ascending a height, thereby can improve oil pipe and insert the operating efficiency to the injector, and reduced the operation risk.

In some embodiments, the side of each slip 110 facing the driving rod 120 is provided with a first inclined surface as the first contact surface 111, and accordingly, one end of the driving rod 120 is provided with an extrusion head 121, and the extrusion head 121 is provided with a second inclined surface along its circumference as the second contact surface 1211, and the first inclined surface is matched with the second inclined surface. Through this kind of setting, along with the positive motion of actuating lever 120, can make the second inclined surface gradually with first inclined surface contact to produce the squeezing action to first inclined surface, make each slips 110 deviate from actuating lever 120 motion, thereby can make each slips 110 outwards expand, so that make the outside of slips 110 support with the inner wall of oil pipe tightly.

Based on the dislocation fit of the first inclined surface and the second inclined surface, the outer side of the slip 110 can be in closer contact with the inner wall of the oil pipe when the first inclined surface and the second inclined surface are mutually pressed.

Illustratively, each slip 110 has a first inner side and a second inner side in a region facing the drive rod 120, and the first inner side and the second inner side lie on different planes, specifically, the first inner side is away from the mount 130 and the second inner side is closer to the mount 130, and the first inner side is farther from the drive rod 120 than the second inner side is from the drive rod 120, and the first inner side and the second inner side are connected by a first inclined surface.

Accordingly, one end of the driving rod 120 is provided with an extrusion head 121, and the outer peripheral dimension of the extrusion head 121 is greater than the outer peripheral dimension of other positions, so that during the forward movement of the driving rod 120, the extrusion head 121 moves first in the area corresponding to the first inner side surface of each slip 110 and moves towards the area corresponding to the second inner side surface, and when the second inclined surface of the extrusion head 121 contacts the first inclined surface, as the driving rod 120 continues to move forward, an extrusion effect is generated on the slips 110, so that the slips 110 are outwards deployed.

In some embodiments, the mounting base 130 may be provided with internal threads, and accordingly, the outer wall of the driving rod 120 is provided with external threads 122, and the external threads 122 of the driving rod 120 are cooperatively connected with the internal threads of the mounting base 130. With this arrangement, when adjustment of the drive rod 120 is desired, the drive rod 120 can be twisted in a first rotational direction such that the drive rod 120 is both rotated relative to the mounting block 130 and moved relative to the mounting block 130 to facilitate the generation of an extrusion force on each slip 110. When the auxiliary tool needs to be detached from the oil pipe, the driving rod 120 can be screwed in a second rotation direction opposite to the first rotation direction, so that the driving rod 120 can rotate relative to the mounting seat 130 and can move relative to the mounting seat 130 to release the extrusion action on each slip 110, and the slip 110 can be conveniently moved relative to the mounting seat 130 to be separated from the oil pipe. Based on the above arrangement, the simplicity and rationality of the connection mode between the driving rod 120 and the mounting base 130 can be ensured, so that the connection or disassembly can be rapidly completed on site, and the operation time and unnecessary disassembly cost are saved.

In other embodiments, the mounting block 130 may also be provided with a smooth through hole through which the drive rod 120 passes and is movable relative to the mounting block 130, by which arrangement the drive rod 120 may be pulled in a first direction when adjustment of the drive rod 120 is desired, such that the drive rod 120 may be moved in the first direction relative to the mounting block 130 to facilitate the generation of a compressive force on each slip 110. When it is desired to remove the auxiliary tool from the tubing, the drive rod 120 may be pushed in a second direction opposite the first direction such that the drive rod 120 may be moved in the second direction relative to the setting bed 130 to release the compression of each slip 110 to facilitate subsequent movement of each slip 110 relative to the setting bed 130 to disengage the tubing. Here, the driving rod 120 may be connected to a linear driving member, such as an air cylinder, a hydraulic cylinder, an electric cylinder, etc., so as to move the driving rod 120 by the linear driving member.

In this embodiment, the manner in which each slip 110 is movably connected to the mounting base 130 includes:

one, the end of each slip 110 is slidably coupled to the mounting block 130. The method comprises the following steps: the mounting seat 130 may be provided with a plurality of sliding grooves, each sliding groove extends along the radial direction of the mounting seat 130, and the tail end of each slip 110 is arranged in the corresponding sliding groove and is movable in the sliding groove, so that each slip 110 can slide in the radial direction of the mounting seat 130, and the outer side of the slip 110 is abutted or separated from the inner wall of the oil pipe.

Second, the end of each slip 110 is rotatably coupled to the mount 130. The method comprises the following steps: the end of each slip 110 may be coupled to the mount 130 by a swivel, such that each slip 110 may be swung relative to the mount 130 to allow the outside of the slip 110 to abut or disengage the inner wall of the tubing.

Of course, other means are possible, as long as the slips 110 can be moved relative to the setting base 130, and the specific form is not limited.

In order to prevent the slips 110 from being accidentally separated from the oil pipe, a claw 112 may be disposed on a side of each slip 110 facing away from the driving rod 120, so that in the state where the slips 110 are unfolded, the claw 112 may be clamped with the inner wall of the oil pipe, or at least part of the claw 112 is clamped into the inner wall of the oil pipe, thereby effectively preventing the oil pipe from being separated from the slips 110 to affect the pulling of the oil pipe. Illustratively, a plurality of jaws 112 may be provided on a side of each slip 110 facing away from the drive rod 120, and the plurality of jaws 112 may increase the interaction force between the slip 110 and the tubing to ensure that the slip 110 is not accidentally disengaged from the tubing.

With continued reference to fig. 2, in some embodiments, the connection terminal 100 may further include a first housing 140, a second housing 150, and a rotating connector 160, where the first housing 140 and the second housing 150 are detachably connected and enclose a receiving cavity therebetween, the rotating connector 160 is disposed in the receiving cavity, and the other end of the driving rod 120 extends into the receiving cavity and is connected with the rotating connector 160. Based on this, the driving lever 120 can be relatively rotated with the first and second housings 140 and 150 assembled together by the rotation connector 160, and the driving lever 120 is mounted.

For example, the first housing 140 and the second housing 150 may be connected by a threaded connection, a clamping connection, a fastening connection, or the like, so as to facilitate the matching or the separation of the first housing 140 and the second housing 150, thereby facilitating the installation of the rotary connecting member 160 and the driving rod 120.

In addition, the rotating connection 160 may be a bearing, but may be other members, such as a bushing, etc., and the specific form of the rotating connection 160 is not specifically limited herein. When a bearing is used, the entire auxiliary tool may be placed in an unstressed condition, and through 360 ° rotation of the bearing, it may be ensured that the entire auxiliary tool will not cause stress on the connection head 100 and the entire auxiliary tool due to different rotation of the tool after entering the injector.

In a more specific embodiment, the first housing 140 may be provided with a first slot, the rotating connector 160 is disposed in the first slot, and the driving rod 120 passes through the first housing 140 and is connected to the rotating connector 160.

In order to prevent the rotary connector 160 from moving randomly in the accommodating cavity, the connecting end 100 may further include a first limiting member 170, where the first limiting member 170 is at least partially located in the accommodating cavity and contacts the rotary connector 160 to limit the rotary connector 160, thereby effectively preventing the rotary connector 160 from moving randomly and further ensuring the stability of the driving rod 120, the mounting seat 130 and the slips 110.

In some embodiments, the side wall of the first housing 140 may be provided with a limiting hole, at least a portion of the first limiting member 170 penetrates into the accommodating cavity from the limiting hole and abuts against an end face of the rotating connector 160 facing away from the slips 110, so that two ends of the rotating connector 160 may be respectively limited by the first limiting member 170 and the top wall of the first housing 140, so as to prevent the rotating connector 160 from moving randomly to affect the stability of other components. For example, the first stop 170 may be a stop screw, a stop post, a stop pin, or the like.

In other embodiments, the first limiting member 170 may be a limiting ring, which is disposed in the accommodating cavity and abuts against an end surface of the rotating connecting member 160 facing away from the slips 110, and the limiting ring is relatively fixed to the side wall of the first housing 140, such as welding, clamping, riveting, bonding, etc., so that two ends of the rotating connecting member 160 may be respectively limited by the limiting ring and the top wall of the first housing 140, so as to prevent the rotating connecting member 160 from moving randomly and affecting stability of other components.

In order to prevent the driving rod 120 from being separated from the rotation connector 160, the connection terminal 100 may further include a second limiting member 180, and the other end of the driving rod 120 passes through the rotation connector 160, and the second limiting member 180 is disposed at the other end of the driving rod 120 and limits the rotation connector 160. Based on this, the rotational coupling 160 can be effectively prevented from being separated from the driving lever 120, and the stability and the firmness of the coupling are ensured.

In some embodiments, the sidewall of the other end of the driving rod 120 is provided with a fixing hole, the second limiting member 180 penetrates into the fixing hole, and at least one end of the second limiting member 180 protrudes out of the fixing hole, so that the protruding portion can contact with the rotating connection member 160, thereby limiting the rotating connection member 160 from being separated from the other end of the driving rod 120.

In other embodiments, the second stop 180 may be a stop collar that is positioned at the other end of the drive rod 120 and is configured to contact the rotational coupling 160 to limit the rotational coupling 160 from being disengaged from the other end of the drive rod 120.

Of course, the second stopper 180 may take other forms besides the above-described embodiment, and is not particularly limited herein.

Referring to fig. 1, in some embodiments, the auxiliary tool may further include a plurality of connection segments 200 and a plurality of universal joints 300, wherein two adjacent connection segments 200 are connected by the universal joints 300, so that the two adjacent connection segments 200 can be connected and can swing relatively, and thus oil pipes with different shapes can be adapted to improve the applicability of the auxiliary tool.

Further, the connection end at one end of the plurality of connection segments 200 is connected to the connection terminal 100 through the universal joint 300, so that the connection terminal 100 can be swung with respect to the connection segments 200 to improve the applicability of the auxiliary tool.

Based on the above arrangement, the overall length of the auxiliary tool can be changed by changing the number of the connection sections 200 according to actual needs, and thus, the auxiliary tool can be placed at the position of the gooseneck of the injector by using the crane once.

In addition, this application embodiment can make things convenient for the increase and decrease of linkage segment 200 to adapt to different operating mode demands, and conveniently change linkage segment 200, reduce the cost of dismouting, and can disassemble appurtenance and be a plurality of basic units, in order to conveniently place, store, reduce area.

Illustratively, the connecting segment 200 may be made of wear-resistant, pressure-resistant plastic, etc. to reduce the overall weight of the auxiliary tool and reduce the manufacturing cost.

As shown in fig. 1 and 3, in order to connect two adjacent connection sections 200 together by means of the universal joint 300, the end surfaces at both ends of each connection section 200 are respectively provided with the first mounting holes 210, one end of the universal joint 300 is connected with the first mounting hole 210 of one of the two adjacent connection sections 200, and the other end of the universal joint 300 is connected with the first mounting hole 210 of the other, so that the connection of the two adjacent connection sections 200 is achieved.

Referring to fig. 4, in some embodiments, the universal joint 300 may be provided with a first mounting bar 310 at one end and a second mounting bar 320 at the other end. When in installation, the first installation rod 310 is matched with the first installation hole 210 of one of the installation rods, and the second installation rod 320 is matched with the first installation hole 210 of the other installation rod, so that the connection of two adjacent connection sections 200 is realized.

Illustratively, the first mounting rod 310 and the second mounting rod 320 may each be a screw rod, and accordingly, the first mounting hole 210 may be a screw hole, in which case the connection or disconnection between the universal joint 300 and the connection section 200 may be facilitated by the mating connection of the screw rod and the screw hole, thereby facilitating maintenance of the auxiliary tool.

With continued reference to fig. 1 and 3, to prevent the universal joint 300 from being unintentionally separated from the connection sections 200, sidewalls at both ends of each connection section 200 may be provided with second mounting holes 220, respectively, and a fastener 500 is provided in the second mounting holes 220, the fastener 500 being fastened to one end or the other end of the universal joint 300. With this arrangement, locking of one end or the other end of the universal joint 300 can be achieved by the fastener 500 to prevent accidental separation between the universal joint 300 and the connection section 200, and replacement and maintenance efficiency can be improved, with simple results and reduced costs.

Illustratively, the fastener 500 may be a fastening screw, a fastening bolt, or the like, and correspondingly, the second mounting hole 220 may be a threaded hole, in which case, through threaded connection, the fastening 500 may be conveniently disassembled, so that not only the universal joint 300 and the connection section 200 may be locked, but also the disassembly may be convenient, and the maintenance of the auxiliary tool may be facilitated.

Referring to fig. 1 and 5, in some embodiments, the auxiliary tool may further include a guide tip 400, and the connection segments 200 of the plurality of connection segments 200 located at an end remote from the connection tip 100 are connected to the guide tip 400 through the universal joint 300. Based on this, can make the free swing between guide tip 400 and the linkage segment 200 to improve appurtenance's suitability, and can play the guide effect through guide tip 400 to whole appurtenance, so that appurtenance penetrates the injector, and then the oil pipe of being convenient for penetrates the injector.

Illustratively, one end of the guide tip 400 is provided with a third mounting hole 410, and one or the other end of the universal joint 300 is connected to the third mounting hole 410; in addition, a side wall of one end of the guide tip 400 is provided with a fourth mounting hole 420, and a fastener 500 is inserted into the fourth mounting hole 420 and fastened to one end or the other end of the universal joint 300 to prevent the guide tip 400 from being separated from the universal joint 300.

In the embodiment of the present application, the specific operation process of applying the auxiliary tool to the coiled tubing is:

1. observing the tail end of the continuous oil pipe, chamfering the external angle and the internal angle, and facilitating the insertion of auxiliary tools;

2. inserting the connection head 100 into the coiled tubing while maintaining the drive rod 120 and slips 110 relatively slack;

3. when inserted, the slips 110 need to avoid the welds of the coiled tubing;

4. maintaining the slips 110 in the deepest insertion state, the second contact surface 1211 is pressed against the first contact surface 111 by the movement of the drive rod 120, causing each slip 110 to expand outwardly;

5. the claw 112 at the outer side of the slip 110 contacts the inner wall of the oil pipe, and the driving rod 120 is continuously moved, so that the claw 112 is inserted into the inner wall of the continuous oil pipe;

6. checking the firmness of the insertion;

7. loosening the roller to enable the continuous oil pipe at the outer layer of the roller to keep loose, so that the continuous oil pipe of the crane handle is conveniently pulled out;

8. hoisting the whole auxiliary tool to the gooseneck position of the injector through a hoisting handle;

9. personnel are on the injector to observe the entry of the guide tip 400 into the injector chain;

10. the sling is disassembled, a crane is put, and a chain of the injector is rotated;

11. the blowout prevention box rubber cylinder is in a loose state;

12. the guide head 400 reaches the blowout prevention box position and continuously rotates the chain;

13. the guide tip 400 emerges from the injector bottom end;

14. continuously rotating the chain to expose the continuous oil pipe from the bottom of the blowout prevention box;

15. reversing the movement of the drive rod 120 to facilitate collapsing the slips 110;

16. the jaws 112 disengage from the inner wall of the coiled tubing as the slips 110 are retracted;

17, the connection head 100 is pulled out of the coiled tubing.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (10)

1. An auxiliary tool for hoisting a pipe fitting, comprising: a connection head (100);

the connecting end head (100) comprises a plurality of slips (110), a driving rod (120) and a mounting seat (130);

the slips (110) are arranged around the driving rod (120) in a surrounding mode and are respectively and movably connected with the mounting seat (130);

each slip (110) is provided with a first contact surface (111), and one end of the driving rod (120) is provided with a second contact surface (1211);

the driving rod (120) is connected with the mounting seat (130) and can move relative to the mounting seat (130);

in a first state, the second contact surface (1211) is respectively abutted with the first contact surface (111) of each slip (110), so that each slip (110) is respectively unfolded away from the driving rod (120);

in a second state, the second contact surface (1211) is separated from the first contact surface (111) of each slip (110), and each slip (110) is retractable toward the drive rod (120).

2. The auxiliary tool according to claim 1, characterized in that a side of each slip (110) facing the driving rod (120) is provided with a first inclined surface as the first contact surface (111);

an extrusion head (121) is arranged at one end of the driving rod (120), and a second inclined surface serving as the second contact surface (1211) is arranged on the extrusion head (121) along the circumferential direction of the extrusion head;

the first inclined surface is adapted to the second inclined surface.

3. The auxiliary tool according to claim 1, wherein the mounting seat (130) is provided with an internal thread, and the outer wall of the driving rod (120) is provided with an external thread (122);

the external thread (122) of the driving rod (120) is in fit connection with the internal thread of the mounting seat (130).

4. The accessory tool of claim 1, wherein an end of each slip (110) is slidably connected to the mount (130);

alternatively, the end of each slip (110) is rotatably coupled to the mounting block (130).

5. The auxiliary tool according to claim 1, characterized in that a claw (112) is provided on the side of each slip (110) facing away from the drive rod (120).

6. The accessory tool of claim 1, wherein the connection head (100) further comprises a first housing (140), a second housing (150), and a rotational connector (160);

the first shell (140) is detachably connected with the second shell (150), a containing cavity is defined between the first shell and the second shell, and the rotary connecting piece (160) is arranged in the containing cavity;

the other end of the driving rod (120) extends into the accommodating cavity and is connected with the rotating connecting piece (160).

7. The accessory tool of claim 6, wherein the connection head (100) further comprises a first stop (170), the first stop (170) being at least partially located within the receiving cavity and in contact with the rotational connection (160) to stop the rotational connection (160);

and/or, the connecting end head (100) further comprises a second limiting piece (180), the other end of the driving rod (120) penetrates through the rotating connecting piece (160), and the second limiting piece (180) is arranged at the other end of the driving rod (120) and limits the rotating connecting piece (160).

8. The auxiliary tool according to claim 1, further comprising a plurality of connection segments (200) and a plurality of universal joints (300);

two adjacent connecting sections (200) are connected through the universal joint (300);

the connecting section (200) located at one end of the plurality of connecting sections (200) is connected to the connecting terminal (100) by the universal joint (300).

9. The auxiliary tool according to claim 8, wherein end surfaces at both ends of each of the connection sections (200) are provided with first mounting holes (210), respectively, one end of the universal joint (300) is connected with the first mounting hole (210) of one of the adjacent two connection sections (200), and the other end of the universal joint (300) is connected with the first mounting hole (210) of the other one;

the side walls at two ends of each connecting section (200) are respectively provided with a second mounting hole (220), a fastener (500) is arranged in each second mounting hole (220), and the fastener (500) is in fastening connection with one end or the other end of the universal joint (300).

10. The auxiliary tool according to claim 8, further comprising a guide tip (400);

the plurality of connection segments (200) are connected to the guide tip (400) by means of the universal joint (300), wherein the connection segments (200) are located at an end remote from the connection tip (100).