CN113146526A

CN113146526A - Modularization breakout tongs

Info

Publication number: CN113146526A
Application number: CN202110465614.7A
Authority: CN
Inventors: 张登辉; 吴朝焕; 张圣超
Original assignee: Hubei Peihan Construction Co ltd
Current assignee: Harbin Pudahongzun Electrical Technology Co ltd
Priority date: 2021-04-28
Filing date: 2021-04-28
Publication date: 2021-07-23
Anticipated expiration: 2041-04-28
Also published as: CN113146526B

Abstract

The invention provides modular pipe tongs which comprise two clamping plate seats which are oppositely arranged, wherein one side of each clamping plate seat is slidably provided with a sliding plate, the other side of each clamping plate seat is slidably provided with a clamping ring, the two sliding plates are hinged, and the sliding directions of the sliding plates and the clamping rings are vertical. The pipe wrench has the advantages of ingenious structure, convenience in use, great improvement on the application range of the pipe wrench, flexibility in operation and high clamping precision, and solves the problems that the clamping diameter and the clamping range cannot be adjusted in time, the clamping precision is not high, the holding direction cannot be changed, and the pipe wrench is inconvenient to carry in the construction process.

Description

Modularization breakout tongs

Technical Field

The invention relates to the technical field of mechanical tools, in particular to a modularized pipe wrench.

Background

The existing pipe tongs are mostly one pipe tong corresponding to one size, when the pipe fittings facing different sizes are installed and disassembled, the pipe tongs are very troublesome to use and can be processed by using a plurality of pipe tongs in a coordinated mode, the applicable size range is narrow, so that the pipe tongs are very inconvenient in the using process, the surface of a steel pipe can be coated in the manufacturing process of the steel pipe, and only the pipe tongs matched with the diameter of the steel pipe can avoid the damage of the surface coating of the steel pipe, so that the whole pipe tongs are not scratched.

Chinese patent document CN 106272200 a describes a tube clamp without flower tube, which is specially used for clamping the surface of a pipeline, and clamps the tube clamp through a main jacket, an auxiliary jacket and a main pressure handle, however, the structure can only clamp steel tubes with specific size, the clamping of the steel tubes with smaller diameter is not tight and is not tight in rotation, the clamping of the steel tubes with larger diameter is not symmetrical in clamping force, the problem of inconvenient holding is solved, and the surface of the steel tube is damaged in the whole using process; chinese patent document CN 210010898U is an undamaged pipe wrench, which has a complicated structure and can treat only one kind of pipe diameter, so it needs to be improved.

Disclosure of Invention

The invention provides a modularized pipe wrench, which solves the problems that the clamping diameter and the clamping range cannot be adjusted in time, the clamping precision is not high, the holding direction cannot be changed, and the pipe wrench is inconvenient to carry in the construction process.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a modularization breakout tongs, includes two splint seats that set up relatively, and splint seat one side cunning is equipped with the slide, and splint seat opposite side cunning is equipped with the snap ring, and two slides are articulated, and the slip direction of slide and snap ring is perpendicular.

In the preferred scheme, splint seat one side is run through and is equipped with the spout, and the slide is slided and is established in the spout, and the opposite side of splint seat is equipped with the draw-in groove, and the snap ring slides and establishes in the draw-in groove, and the direction and the spout direction of draw-in groove are perpendicular, and detachable is equipped with the self-adaptation unit in the draw-in groove, and the self-adaptation unit is used for the location and the locking of snap ring.

In a preferred scheme, a first counter bore is arranged above the clamping groove, a first through hole is arranged in the first counter bore, the first through hole penetrates through the upper side of the clamping plate seat, a second counter bore is arranged on one side of the first counter bore, a second through hole is arranged in the second counter bore, and the second through hole penetrates through the upper side of the clamping plate seat; a guide groove is also formed in one side of the first counter bore; the self-adaptive unit comprises a positioning column and a limiting column, wherein the positioning column is located in the first through hole, and the limiting column is located in the second through hole.

In a preferred scheme, the self-adaptive unit comprises a positioning column and a limiting column, the positioning column comprises a first upright column, a circular truncated cone is arranged at the lower part of the first upright column, a boss is arranged on the outer side of the circular truncated cone, a first spring is sleeved on the positioning column, and a first inclined plane is arranged at the lower part of the circular truncated cone; the limiting column comprises a second stand column, a stop block is arranged on one side of the second stand column, a rib plate is arranged on the stop block, a second inclined plane is arranged at the bottom of the rib plate, a second spring is sleeved on the limiting column, and the upper portions of the first stand column and the second stand column are respectively in threaded connection with a locking sleeve.

In the preferred scheme, the snap ring comprises a support, a clamping semicircular ring is arranged on the lower portion of the support, a positioning hole is formed in the upper portion of one side of the support, a second limiting groove is formed in one side of the positioning hole, the second limiting groove is far away from the center of the support, a driving surface is arranged on the other side of the support, the support is connected with the clamping plate seat through a self-adaptive unit, the size of the positioning hole is matched with that of the positioning column, and the size of the second limiting groove is matched with that of the limiting column.

In the preferred scheme, the sliding plate is provided with a first path groove and a second path groove in a penetrating mode, one side of the sliding plate is provided with a step, the step is provided with a third through hole, the upper portion of the sliding plate is further provided with scales, and the scales are located above the second path groove.

In the preferred scheme, still run through on the splint seat and be equipped with spacing hole and first spacing groove, the direction of spacing hole and first spacing groove is perpendicular with the direction of spout and draw-in groove respectively, and the opposite side of the relative draw-in groove of splint seat is equipped with first screw hole, and first screw hole both sides symmetry are equipped with two logical grooves respectively, and it is equipped with the fixed plate to lead to the inslot cunning.

In the preferred scheme, the fixed plate includes two grip blocks of parallel arrangement, and two grip blocks pass through the backup pad and connect, are equipped with the fourth through-hole in the backup pad, and the fixed plate passes through the screw and connects with the splint seat, and the tip of grip block is equipped with the clamping face.

In the preferred scheme, a second threaded hole and a third threaded hole are respectively formed in two sides of the clamping plate seat, and the handle is detachably arranged in the second threaded hole or the third threaded hole.

In the preferred scheme, the handle includes the portion of gripping, and one side of the portion of gripping is equipped with the transition pole, is equipped with the spliced pole on the transition pole, spliced pole and splint seat threaded connection.

The invention has the beneficial effects that:

1) the carrying is convenient: can be quick decompose the breakout tongs, then with the orderly instrument box of putting into of individual part, reduced the breakout tongs occupation space great trouble of different specifications.

2) The use is efficient: according to the diameter of the steel pipe on site, the pipe tongs which are completely matched can be conveniently assembled, so that convenience in use is guaranteed;

3) the clamping precision is high: the symmetrical structural design ensures uniform stress during clamping, and the relative clearance between the diameters of the two clamping semicircular rings can be finely adjusted according to the scales on the sliding plate;

4) the operation is flexible: through setting up the snap ring of multiunit, change that can be quick through the self-adaptation unit, can change the direction of gripping according to the degree of convenience when gripping, change in the convenience of construction.

Drawings

The invention is further illustrated by the following figures and examples.

FIG. 1 is a schematic diagram A of the overall use of the present invention;

FIG. 2 is an overall top schematic view of the present invention;

FIG. 3 is an overall elevational schematic of the present invention;

FIG. 4 is an overall left side schematic view of the present invention;

FIG. 5 is a schematic view B of the cleat base of the present invention;

FIG. 6 is a schematic view of the cleat seat structure of the present invention C;

FIG. 7 is a bottom view of the cleat base of the present invention;

FIG. 8 is a rear view of the cleat seat of the present invention;

FIG. 9 is a schematic top view of the cleat seat of the present invention;

FIG. 10 is a cross-sectional view of the cleat seat D-D of the present invention;

FIG. 11 is a schematic view of a snap ring construction of the present invention;

FIG. 12 is a schematic elevational view of a snap ring of the present invention;

FIG. 13 is a top schematic view of a snap ring of the present invention;

FIG. 14 is a schematic diagram of the adaptation unit of the present invention in its entirety;

FIG. 15 is a schematic right view of the adaptive unit of the present invention;

FIG. 16 is a schematic left side view of an adaptive unit of the present invention;

FIG. 17 is an overall schematic view of the skateboard of the present invention;

FIG. 18 is a schematic top view of the slider of the present invention;

FIG. 19 is a schematic view of the overall structure of the fixing plate of the present invention;

FIG. 20 is a schematic view of the overall structure of the handle of the present invention;

FIG. 21 is a schematic view of a first threaded rod configuration of the handle of the present invention;

fig. 22 is a schematic view E of the overall use of the invention.

In the figure: a clamping plate seat 1; a chute 101; a card slot 102; a stopper hole 103; a first limiting groove 104; a first through hole 105; a second through hole 106; a through groove 107; a first threaded hole 108; a second threaded hole 109; a third threaded hole 110; a first counterbore 111; a second counterbore 112; a guide groove 113; a second sliding surface 114; a screw alignment groove 115; a snap ring 2; a support 201; a clamping half-ring 202; a positioning hole 203; a second limiting groove 204; a drive face 205; an adaptation unit 3; positioning posts 301; a restraint post 302; a first upright 303; a circular table 304; a boss 305; a first bevel 306; a second upright 307; a stop block 308; a rib plate 309; a second inclined surface 310; a first spring 311; a second spring 312; a locking sleeve 313; a slide 4; a first path slot 401; a second path slot 402; a first sliding surface 403; a stage 404; a third through-hole 405; a scale 406; locking nails; a fixed plate 5; a clamping plate 501; a support plate 502; a fourth through hole 503; a clamping surface 504; a screw 505; a handle 6; a grip 601; a transition rod 602; connecting columns 603; a first screw 7; a rod body 701; a registration block 702; a nut 703; a second screw 8.

Detailed Description

As shown in fig. 1-22, a modular pipe wrench comprises two opposite clamping plate bases 1, a sliding plate 4 is slidably disposed on one side of each clamping plate base 1, a snap ring 2 is slidably disposed on the other side of each clamping plate base 1, the two sliding plates 4 are hinged, and the sliding directions of the sliding plates 4 and the snap ring 2 are perpendicular. From this structure, two slides 4 are articulated through check lock pin 407 to make splint seat 1 connect through slide 4, effectual mechanical centre gripping is carried out to the pipe fitting surface to snap ring 2, during the use, because the complete symmetry of structure has guaranteed the even of pipe fitting atress, thereby has avoided the pipe fitting because the uneven centre gripping that produces of atress damages.

In an optimal scheme, a sliding groove 101 penetrates through one side of the clamping plate seat 1, the sliding plate 4 is slidably arranged in the sliding groove 101, a clamping groove 102 is formed in the other side of the clamping plate seat 1, the clamping ring 2 is slidably arranged in the clamping groove 102, the direction of the clamping groove 102 is perpendicular to the direction of the sliding groove 101, a self-adaptive unit 3 is detachably arranged in the clamping groove 102, and the self-adaptive unit 3 is used for positioning and locking the clamping ring 2. From this structure, can adjust the interval between two splint seats 1 through adjusting slide 4 in the position of spout 101 to reach the purpose of the size of adjustment centre gripping pipe diameter, two snap rings 2 can be under the drive, the lateral wall of abundant laminating pipe fitting, thereby realize carrying out effectual grip function to the pipe fitting.

In a preferable scheme, a first counter bore 111 is arranged above the clamping groove 102, a first through hole 105 is arranged in the first counter bore 111, the first through hole 105 penetrates through the upper side of the clamping plate seat 1, a second counter bore 112 is arranged on one side of the first counter bore 111, a second through hole 106 is arranged in the second counter bore 112, and the second through hole 106 penetrates through the upper side of the clamping plate seat 1; a guide groove 113 is also formed in one side of the first counter bore 111; the adaptive unit 3 includes a positioning pillar 301 and a position-limiting pillar 302, the positioning pillar 301 is located in the first through hole 105, and the position-limiting pillar 302 is located in the second through hole 106. From this structure to make reference column 301 and spacing post 302 of operation self-adaptation unit 3, can take out in the convenient follow draw-in groove 102 of snap ring 2, change assorted snap ring 2 with it according to the difference of pipe diameter, then push draw-in groove 102, self-adaptation unit is automatic accomplishes the location and the locking of snap ring 2 this moment, has guaranteed the convenience of using, and easy operation, and the efficiency of construction is high.

In a preferred scheme, the adaptive unit 3 comprises a positioning column 301 and a limiting column 302, the positioning column 301 comprises a first upright column 303, a circular truncated cone 304 is arranged at the lower part of the first upright column 303, a boss 305 is arranged at the outer side of the circular truncated cone 304, a first spring 311 is sleeved on the positioning column 301, and a first inclined surface 306 is arranged at the lower part of the circular truncated cone 304; the limiting column 302 comprises a second upright column 307, a stop block 308 is arranged on one side of the second upright column 307, a ribbed plate 309 is arranged on the stop block 308, a second inclined surface 310 is arranged at the bottom of the ribbed plate 309, a second spring 312 is sleeved on the limiting column 302, and locking sleeves 313 are respectively in threaded connection with the upper portions of the first upright column 303 and the second upright column 307. The outer side wall of the locking sleeve 313 is provided with anti-skid lines in a crossed manner, so that the operation is more convenient. The cross section of the boss 305 is a circular arc, so that the larger attaching area is ensured, the stress concentration is avoided, the cross section of the stop block 308 is a round corner square, and therefore, the structure is realized, the snap ring 2 can be completely unlocked by lifting the positioning column 301 and the limiting column 302 upwards, at the moment, the snap ring 2 can be taken out from the clamping groove 102, when the snap ring 2 slides into the clamping groove 102, the slopes of the first slope 306 and the second slope 310 are the same, the first slope 306 and the second slope 310 are in contact with the end face of the snap ring 2, the direction of the stress is changed, the corresponding movement towards the outer side of the clamping plate seat 1 is realized, the function of driving the positioning column 301 and the limiting column 302 is realized, the self-adaptive positioning and locking are realized, the circular truncated cone 304 is used for accurately positioning the snap ring, the accurate attaching of the outer side wall of the snap ring 2 and the inner side wall of the clamping groove 102 is ensured, the round table 304 is prevented from rotating, the stop block 308 is square in a fillet, so that in the up-and-down moving process, the stop block is more smooth and prevented from being jammed, the stop block 308 and the rib plate 309 are used for carrying out axial and radial dual limiting on the clamp ring, and the high double-precision in the fixing process is ensured.

In a preferable scheme, the clamping ring 2 comprises a support 201, a clamping semicircular ring 202 is arranged at the lower part of the support 201, a positioning hole 203 is arranged at the upper part of one side of the support 201, a second limiting groove 204 is arranged at one side of the positioning hole 203, the distance between the second limiting groove 204 and the central position of the support 201 is far, a driving surface 205 is arranged at the other side of the support 201, the support 201 is connected with the clamping plate base 1 through a self-adaptive unit 3, the size of the positioning hole 203 is matched with that of the positioning column 301, and the size of the second limiting groove 204 is matched with that of the limiting column 302. With the structure, the outer side of the support 201 is tightly attached to the inside of the slot 102, and the slopes of the driving surface 205 are the same as the slopes of the first slope 306 and the second slope 310, respectively, so that the positioning post 301 and the limiting post 302 are pushed to move upwards in the process that the snap ring 2 slides into the slot 104 until the positioning post 301 and the limiting post 302 are respectively snapped into the positioning hole 203 and the second limiting groove 204.

In a preferred embodiment, the sliding plate 4 is provided with a first path slot 401 and a second path slot 402 in a penetrating manner, one side of the sliding plate 4 is provided with a step 404, the step 404 is provided with a third through hole 405, the upper portion of the sliding plate 4 is further provided with a scale 406, and the scale 406 is located above the second path slot 402. The both sides of slide 3 are equipped with first glide plane 403 respectively, first glide plane 403 cross-section is the circular arc, adopt the circular arc to increase the area of contact with spout 101, the location is more accurate while the stress range is bigger, can bear bigger axial moment, first path groove 401 adopts the S type, second path groove 402 adopts the linear type, from this structure, so that second path groove 402 has played the effect of location, first path groove 401 then can play the spacing effect of slip in-process self, first path groove 401 and second path groove 402 mutually support and can reach the effect of quick adjustment location and locking, scale 406 can the auxiliary adjustment, it is directly perceived to use, can adjust into the structure of complete symmetry with slide 4 in the grip slipper 1 of both sides, the adjustment precision is high, it is even to have guaranteed that the atress that uses.

In an optimal scheme, a limiting hole 103 and a first limiting groove 104 are further arranged on the clamping plate base 1 in a penetrating manner, the directions of the limiting hole 103 and the first limiting groove 104 are perpendicular to the directions of the sliding groove 101 and the clamping groove 102 respectively, a first threaded hole 108 is arranged on the other side, opposite to the clamping groove 102, of the clamping plate base 1, two through grooves 107 are symmetrically arranged on two sides of the first threaded hole 108 respectively, and the fixing plate 5 is arranged in the through grooves 107 in a sliding manner. The first screw 7 penetrates through the limiting hole 103, the second screw 8 penetrates through the first limiting groove 104, the limiting hole 103 is a directional hole, the screw aligning groove 115 is arranged on one side of the limiting hole 103, the first screw 7 comprises a rod body 701, the cross section of the rod body 701 is square, the aligning block 702 is arranged on one side of the rod body 701, the external dimension of the rod body 701 is matched with the dimension of the limiting hole 103, the external dimension of the aligning block 702 is matched with the dimension of the screw aligning groove 115, the structure is further convenient to adjust, the locking force is strong, the connection is firm, the sliding plate 4 can be fixed in the slideway 101 by adjusting the first screw 7 and the second screw 8, after the direction of the first screw 7 is adjusted to be placed in the limiting hole 103, the locking is completed through the nut 703, the side length of the rod body 701 is matched with the width of the second path groove 402, the rod body 701 plays a role in auxiliary positioning to the sliding plate 4, the fixing plate 5 firmly supports the second screw 8 in the first path groove 401, thereby limiting the moving direction of the sliding plate 4 and ensuring the stability in use.

In a preferred scheme, the fixing plate 5 includes two clamping plates 501 arranged in parallel, the two clamping plates 501 are connected by a supporting plate 502, a fourth through hole 503 is formed in the supporting plate 502, the fixing plate 5 is connected with the clamping plate holder 1 by a screw 505, and a clamping surface 504 is formed at an end of the clamping plate 501. The body of rod of second screw rod 8 is cylindrical, from this structure, so that adjust the distance between fixed plate 5 and the splint seat 1 through screw 505, thereby restricted second screw rod 8's radial float, because when slide 4 removed in spout 101, because the lateral wall of first path groove 401 is continuous change's curved surface, if second screw rod 8 did not have the support of external force under, thereby can receive the lateral wall extrusion of first path groove 401 and produce radial float, lead to the holistic unstability of breakout tongs, the appearance of clamping face 504 and the cross-section appearance phase-match of second screw rod 8, thereby guaranteed the inseparable laminating to second screw rod 8, through adjusting screw 505, can adjust the elasticity that second screw rod 8 laminated slide 4.

In a preferable scheme, a second threaded hole 109 and a third threaded hole 110 are respectively formed in two sides of the splint base 1, and the handle 6 is detachably arranged in the second threaded hole 109 or the third threaded hole 110. With this structure, it is possible to change the mounting position of the handle 6 according to the scene of use, for convenience of use and operation.

In a preferred scheme, the handle 6 comprises a holding part 601, a transition rod 602 is arranged on one side of the holding part 601, a connecting column 603 is arranged on the transition rod 602, and the connecting column 603 is in threaded connection with the splint base 1. With the structure, the handle 6 is more convenient to use, the holding part 601 adopts an arc design, so that the force application during holding is more facilitated, and the comfort during holding is ensured and the appearance is more attractive.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

1. A modular pipe wrench is characterized in that: the novel clamp plate comprises two clamp plate seats (1) which are oppositely arranged, a sliding plate (4) is arranged on one side of each clamp plate seat (1) in a sliding mode, a clamping ring (2) is arranged on the other side of each clamp plate seat (1) in a sliding mode, the two sliding plates (4) are hinged, and the sliding directions of the sliding plates (4) and the clamping ring (2) are perpendicular.

2. A modular pipe wrench as claimed in claim 1, wherein: one side of the clamping plate seat (1) is provided with a sliding groove (101) in a penetrating mode, the sliding plate (4) is arranged in the sliding groove (101) in a sliding mode, the other side of the clamping plate seat (1) is provided with a clamping groove (102), the clamping ring (2) is arranged in the clamping groove (102) in a sliding mode, the direction of the clamping groove (102) is perpendicular to the direction of the sliding groove (101), the self-adaptive unit (3) is detachably arranged in the clamping groove (102), and the self-adaptive unit (3) is used for positioning and locking the clamping ring (2).

3. A modular pipe wrench as claimed in claim 2, wherein: a first counter bore (111) is arranged above the clamping groove (102), a first through hole (105) is formed in the first counter bore (111), the first through hole (105) penetrates through the upper side of the clamping plate seat (1), a second counter bore (112) is arranged on one side of the first counter bore (111), a second through hole (106) is formed in the second counter bore (112), and the second through hole (106) penetrates through the upper side of the clamping plate seat (1); a guide groove (113) is also formed in one side of the first counter bore (111); the self-adaptive unit (3) comprises a positioning column (301) and a limiting column (302), wherein the positioning column (301) is located in the first through hole (105), and the limiting column (302) is located in the second through hole (106).

4. A modular pipe wrench as claimed in claim 3, wherein: the self-adaptive unit (3) comprises a positioning column (301) and a limiting column (302), the positioning column (301) comprises a first upright column (303), a circular truncated cone (304) is arranged at the lower part of the first upright column (303), a boss (305) is arranged on the outer side of the circular truncated cone (304), a first spring (311) is sleeved on the positioning column (301), and a first inclined plane (306) is arranged at the lower part of the circular truncated cone (304); spacing post (302) includes second stand (307), and second stand (307) one side is equipped with dog (308), is equipped with floor (309) on dog (308), and floor (309) bottom is equipped with second inclined plane (310), and the cover is equipped with second spring (312) on spacing post (302), and threaded connection has lock sleeve (313) respectively on the upper portion of first stand (303) and second stand (307).

5. A modular pipe wrench as claimed in claim 1, wherein: the clamping ring (2) comprises a support (201), a clamping semicircular ring (202) is arranged on the lower portion of the support (201), a positioning hole (203) is formed in the upper portion of one side of the support (201), a second limiting groove (204) is formed in one side of the positioning hole (203), the second limiting groove (204) is far away from the center of the support (201), a driving surface (205) is arranged on the other side of the support (201), the support (201) is connected with the clamping plate seat (1) through a self-adaptive unit (3), the size of the positioning hole (203) is matched with that of a positioning column (301), and the size of the second limiting groove (204) is matched with that of a limiting column (302).

6. A modular pipe wrench as claimed in claim 1, wherein: the sliding plate (4) is provided with a first path groove (401) and a second path groove (402) in a penetrating mode, one side of the sliding plate (4) is provided with a step (404), a third through hole (405) is formed in the step (404), the upper portion of the sliding plate (4) is further provided with scales (406), and the scales (406) are located above the second path groove (402).

7. A modular pipe wrench as claimed in claim 2, wherein: the clamp plate base is characterized in that a limiting hole (103) and a first limiting groove (104) are further arranged on the clamp plate base (1) in a penetrating mode, the directions of the limiting hole (103) and the first limiting groove (104) are perpendicular to the directions of the sliding groove (101) and the clamping groove (102) respectively, a first threaded hole (108) is formed in the other side, opposite to the clamping groove (102), of the clamp plate base (1), two through grooves (107) are symmetrically formed in the two sides of the first threaded hole (108) respectively, and a fixing plate (5) is arranged in the through grooves (107) in a sliding mode.

8. A modular pipe wrench as claimed in claim 7, wherein: the fixing plate (5) comprises two clamping plates (501) which are arranged in parallel, the two clamping plates (501) are connected through a supporting plate (502), a fourth through hole (503) is formed in the supporting plate (502), the fixing plate (5) is connected with the clamping plate seat (1) through a screw (505), and a clamping surface (504) is arranged at the end part of each clamping plate (501).

9. A modular pipe wrench as claimed in claim 1, wherein: and a second threaded hole (109) and a third threaded hole (110) are respectively formed in two sides of the clamping plate seat (1), and the handle (6) is detachably arranged in the second threaded hole (109) or the third threaded hole (110).

10. A modular pipe wrench as claimed in claim 9, wherein: the handle (6) comprises a holding part (601), a transition rod (602) is arranged on one side of the holding part (601), a connecting column (603) is arranged on the transition rod (602), and the connecting column (603) is in threaded connection with the splint base (1).