A threader

Abstract

The application discloses a threading device, which comprises a crutch seat, wherein a cross-line groove is arranged on the crutch seat and opens upward, a reverse buckle part is arranged on one side of the cross-line groove, a crutch groove is arranged on the other side of the cross-line groove, a crutch is arranged in the crutch groove and can swing to the reverse buckle part, and the reverse buckle part is used for buckling the bottom of the crutch.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-voltage cable maintenance, and particularly relates to a threading device. BACKGROUND

[0002] Cable lines need to be regularly maintained, and currently, an automatic robot is generally used for operation during maintenance. The robot needs to be hung on a cable line by means of a lifting rope and a winch device before operation, and the lifting rope usually needs to be moved to the cable line by a drone or a crane and a cross-line task is completed. However, when the environment cannot meet the use requirements of the drone or the crane, such as a rural environment or a densely built environment, the robot is difficult to perform the hanging operation.

[0003] It can be seen that the prior art still needs to be improved and enhanced. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application aims to provide a threading device which can assist operation and maintenance personnel to manually hang a lifting rope, has low hanging difficulty, and can meet the hanging requirements in complex environments.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] A threading device comprises a crutch seat, wherein a cross-line groove opening upward is arranged on the crutch seat, a reverse buckle part is arranged on one side of the cross-line groove on the crutch seat, a crutch groove is arranged on the other side of the cross-line groove on the crutch seat, a crutch is arranged in the crutch groove and can swing to the reverse buckle part, and the reverse buckle part is used for buckling the bottom of the crutch; a trigger part is arranged on the bottom of the cross-line groove on the crutch seat, one end of the trigger part is rotationally connected with the crutch seat, and a clamping groove matched with the bottom of the crutch is arranged on the trigger part.

[0007] In the threading device, a clamping rod part is arranged on the outside of the reverse buckle part on the crutch seat, and a clamping rod groove which can be opened and closed is arranged in the clamping rod part; the clamping rod part is used for being connected with an external insulating rod.

[0008] In the threading device, the reverse buckle part comprises a reverse buckle plate and a first torsional spring assembly; a movable groove opening toward the cross-line groove is arranged on the crutch seat, and a hook part is arranged above the movable groove; the reverse buckle plate is connected with the opening of the movable groove through the first torsional spring assembly, and the hook part is located above the reverse buckle plate.

[0009] In the threading device, the reverse buckle plate is arranged to be inclined toward the top of the crutch.

[0010] The threader, the first torsional spring assembly comprises a first rotating pin and a first torsional spring; the two sides of the movable slot are respectively provided with a first ear, and the first insertion hole is arranged below the first ear on the crutch seat; the reverse buckle plate is provided with a second insertion hole; the reverse buckle plate is connected with the two first ears through the first rotating pin, the first torsional spring is sleeved on one end of the first rotating pin, one end of the first torsional spring is clamped with the first insertion hole, and the other end of the first torsional spring is clamped with the second insertion hole.

[0011] The threader, the top of the crutch seat is provided with a rotating slot opening upward on the two sides of the crutch groove, and the bottom of the crutch seat is provided with a hooking part below the crutch groove; the bottom of the crutch is provided with a hook ring matched with the reverse buckle plate, the two sides of the crutch are respectively provided with a convex part matched with the rotating slot, and the top of the crutch is respectively provided with a rope binding hole and a pulling slot for connecting a hanging rope; the pulling slot and the hooking part are connected through an elastic element.

[0012] The threader, the hooking part comprises two oppositely arranged clamping plates, a hooking groove is formed between the two clamping plates, and a gap is formed between the two clamping plates and the crutch seat, which communicates with the hooking groove.

[0013] The threader, the trigger part comprises a top rod and a second torsional spring assembly, and the bottom of the cross-line groove is provided with a connecting groove near one side of the crutch groove; one end of the top rod is connected with the connecting groove through the second torsional spring assembly, the clamping groove is located at one end of the top rod near the connecting groove, the other end of the top rod extends to one side of the reverse buckle part, and a trigger gap is formed between the extending end of the top rod and the bottom of the cross-line groove.

[0014] The threader, the second torsional spring assembly comprises a second rotating pin and a second torsional spring; the two sides of the connecting groove are respectively provided with a second ear, and a third insertion hole is arranged on one side of the second ear on the crutch seat; the top rod is provided with a fourth insertion hole; one end of the top rod is connected with the two second ears through the second rotating pin, the second torsional spring is sleeved on one end of the second rotating pin, one end of the second torsional spring is clamped with the third insertion hole, and the other end of the second torsional spring is clamped with the fourth insertion hole.

[0015] The clamping rod part comprises a buckle body and a buckle plate; a connecting seat is arranged on the crutch seat, and hinge parts and a lock part are arranged on both sides of the connecting seat; the clamping rod groove is located between the buckle body and the connecting seat, one side of the buckle body is hinged to the hinge part, the other side of the buckle body is provided with a pry groove which is open to the outside, the buckle plate is hinged to the pry groove through a connecting rod, and one end of the buckle plate close to the lock part is provided with a buckle rod which is connected with the lock part.

[0016] Beneficial effects:

[0017] The cable threading device provided by the application can be used for hanging a cable line. When the cable threading device is used for threading a cable line, one end of a lifting rope is tied to the top of a crutch, the other end of the lifting rope is naturally hung down, the bottom of the crutch is connected with a clamping groove, and the crutch is in a state of being ready to be triggered. When the cable line passes through the cross-line groove, the crutch is pressed towards the triggering part until the cable line presses the triggering part to make the clamping groove rotate, so that the clamping groove releases the bottom of the crutch, and the bottom of the crutch swings towards the reverse buckle part until the bottom of the crutch is buckled with the reverse buckle part, and the cross-line groove forms a closed space. The cable line is enclosed in the cross-line groove by the crutch. At this time, the cable threading device can be moved downwards, the cable line can lift the crutch upwards until the top of the crutch is separated from the crutch groove, and the top of the crutch can cross the cable line with one end of the lifting rope and fall into the cross-line groove due to inertia, so that the hanging operation of the lifting rope is completed. When the cable threading device is recovered, the lifting rope can be slowly hung on the cable line, the whole hanging process is simple and fast, and the operation of the maintenance personnel is not complicated. The whole hanging process is not affected by the terrain environment, and the hanging line demand in a complex environment can be met. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The whole structure of the cable threading device provided by the application Figure 1 ;

[0019] Figure 2 The whole structure of the cable threading device provided by the application Figure 2 ;

[0020] Figure 3 The structure of the crutch seat in the cable threading device provided by the application Figure 1 ;

[0021] Figure 4 The structure of the crutch seat in the cable threading device provided by the application Figure 2 ;

[0022] Figure 5 The structure of the crutch and the triggering part in the cable threading device provided by the application

[0023] Figure 6The disassembly structure diagram of the clamping rod part and the elbow seat in the threading device provided by the application is shown.

[0024] Main element symbol explanation: 1-elbow seat, 11-crossing slot, 12-elbow slot, 13-moving slot, 14-hook part, 15-first ear part, 16-first insertion hole, 17-rotation slot, 18-hooking part, 181-clamping plate, 182-hook slot, 19-connection slot, 110-trigger gap, 120-second ear part, 130-third insertion hole, 140-connection seat, 150-hinge part, 160-locking part, 2-reverse buckle part, 21-reverse buckle plate, 211-second insertion hole, 22-first torsional spring assembly, 221-first rotation pin, 222-first torsional spring, 3-elbow, 31-hook ring, 32-protruding part, 33-rope binding hole, 34-pulling slot, 4-trigger part, 41-clamping slot, 42-top rod, 421-fourth insertion hole, 43-second torsional spring assembly, 431-second rotation pin, 432-second torsional spring, 5-clamping rod part, 51-clamping rod slot, 52-buckling body, 521-buckling slot, 522-pressing plate, 53-buckling plate, 531-clamping rod, 532-buckling hand part, 54-link rod. DETAILED DESCRIPTION

[0025] The application provides a threading device, in order to make the purpose, technical scheme and effect of the application more clear and explicit, the application is further described in detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.

[0026] In the description of the application, it should be understood that the orientation or positional relationship indicated by the terms "middle", "inner side", "outer side" and the like is the orientation or positional relationship of the application based on the drawings, and is only for the convenience of describing the application and simplifying the description. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0027] Please refer to Figures 1 to 6 The application provides a threading device, which comprises an elbow seat 1, wherein the elbow seat 1 is provided with a crossing slot 11 opening upward, one side of the crossing slot 11 of the elbow seat 1 is provided with a reverse buckle part 2, the other side of the crossing slot 11 of the elbow seat 1 is provided with an elbow slot 12, the elbow slot 12 is provided with an elbow 3 which can swing towards the reverse buckle part 2, and the reverse buckle part 2 is used for locking the bottom of the elbow 3; the bottom of the crossing slot 11 of the elbow seat 1 is provided with a trigger part 4, one end of the trigger part 4 is rotationally connected with the elbow seat 1, and the trigger part 4 is provided with a clamping slot 41 matched with the bottom of the elbow 3.

[0028] In actual use, one end of the lifting rope is tied to the top of the crutch 3, the other end of the lifting rope is naturally dropped, the bottom of the crutch 3 is clamped with the clamping groove 41, the crutch 3 is in a state of waiting to trigger, when the cable passes through the cross-line groove 11, it is pressed against the trigger part 4 until the cable presses the trigger part 4 to make the clamping groove 41 rotate, so that the clamping groove 41 releases the bottom of the crutch 3, and the bottom of the crutch 3 swings to the reverse buckle part 2 until the bottom of the crutch 3 and the reverse buckle part 2 complete the buckling action, and the cross-line groove 11 forms a closed space, the cable is enclosed in the cross-line groove 11 by the crutch 3, at this time, the maintenance personnel can move the threading device downward, the cable can lift the crutch 3 upward until the top of the crutch 3 is separated from the crutch groove 12, the top of the crutch 3 will take one end of the lifting rope across the cable, and the top of the crutch 3 will be affected by inertia and fall into the cross-line groove 11, thereby completing the hanging operation of the lifting rope, the maintenance personnel can slowly hang the lifting rope on the cable when recovering the threading device, the whole hanging process is simple and fast, and the maintenance personnel does not need to complete complex operation, the whole hanging process is not affected by the terrain environment, and the hanging line demand in complex environment can be met.

[0029] As shown in Figures 1 to 6 Further, the crutch seat 1 is provided with a clamping rod part 5 outside the reverse buckle part 2, and the clamping rod part 5 is provided with an openable and closable clamping rod groove 51; the clamping rod part 5 is used for installation connection with an external insulating rod; by setting the clamping rod part 5, the maintenance personnel can disassemble and assemble the insulating rod, different lengths of insulating rods are selected according to different hanging demands, so as to facilitate the maintenance personnel to move the threading device to the vicinity of the cable; in use, the clamping rod part 5 is detachably connected with the insulating rod through the openable and closable clamping rod groove 51, so as to achieve the purpose of quick disassembly and quick assembly.

[0030] As shown in Figures 1 to 6As shown, further, the reverse buckle part 2 comprises a reverse buckle plate 21 and a first torsion spring assembly 22; the crutch seat 1 is provided with a movable slot 13 opening towards the cross-line groove 11, and the movable slot 13 is provided with a hook part 14 above; the reverse buckle plate 21 is connected with the opening of the movable slot 13 through the first torsion spring assembly 22, and the hook part 14 is located above the reverse buckle plate 21; in use, the reverse buckle plate 21 cooperates with the first torsion spring assembly 22 to form an opening and closing mechanism capable of reciprocating swing, so that the movable slot 13 and the reverse buckle plate 21 form a movable buckle structure; when the bottom of the crutch 3 swings to the outside of the reverse buckle plate 21, the reverse buckle plate 21 can be pressed to open the opening of the movable slot 13, so that the bottom of the crutch 3 is clamped into the movable slot 13, and the reverse buckle plate 21 can be reset through the first torsion spring assembly 22 to re-close the opening of the movable slot 13, preventing the crutch 3 from being unhooked from the movable slot 13; in addition, the crutch 3 has inertia when it hits the reverse buckle plate 21, so the hook part 14 is arranged to stop the crutch 3, ensuring that the bottom of the crutch 3 can be accurately clamped into the movable slot 13, avoiding the crutch 3 from sliding out of the movable slot 13.

[0031] As shown in Figures 1 to 6 Further, the reverse buckle plate 21 is inclined towards the top of the crutch 3; the top of the reverse buckle plate 21 is misaligned with the hook part 14 through the above arrangement, and the contact area between the reverse buckle plate 21 and the crutch 3 is increased, so as to improve the accuracy of the crutch 3 clamped into the movable slot 13, avoiding the problem of unhooking.

[0032] As shown in Figures 1 to 6 Further, the first torsion spring assembly 22 comprises a first rotating pin 221 and a first torsion spring 222; the movable slot 13 is provided with a first ear part 15 on each side, and the crutch seat 1 is provided with a first insertion hole 16 below the first ear part 15; the reverse buckle plate 21 is provided with a second insertion hole 211; the reverse buckle plate 21 is connected with the two first ear parts 15 through the first rotating pin 221, the first torsion spring 222 is sleeved on one end of the first rotating pin 221, one end of the first torsion spring 222 is clamped with the first insertion hole 16, and the other end of the first torsion spring 222 is clamped with the second insertion hole 211; in use, the first rotating pin 221 realizes the rotating action of the reverse buckle plate 21 in the movable slot 13, and the first torsion spring 222 realizes the reciprocating torsion action of the reverse buckle plate 21; when the bottom of the crutch 3 hits the outside of the reverse buckle plate 21, the reverse buckle plate 21 swings into the movable slot 13, so that the opening of the movable slot 13 is opened, and after the bottom of the crutch 3 is completely clamped into the movable slot 13, the crutch 3 is reset through the first torsion spring 222 to re-close the opening of the movable slot 13, avoiding the problem of the crutch 3 unhooking from the movable slot 13.

[0033] As shown in Figures 1 to 6As shown, further, the top of the crutch seat 1 is provided with a rotating groove 17 opening upward on both sides of the crutch groove 12, and the bottom of the crutch seat 1 is provided with a hooking part 18 below the crutch groove 12; the bottom of the crutch 3 is provided with a hook ring 31 connected with the reverse buckle plate 21, the two sides of the crutch 3 are respectively provided with a convex part 32 connected with the rotating groove 17, and the top of the crutch 3 is respectively provided with a rope binding hole 33 and a pulling groove 34 for connecting the lifting rope; the pulling groove 34 and the hooking part 18 are connected through an elastic member; the rotating action and the separation action of the top of the crutch 3 are realized by the rotating groove 17 opening upward cooperating with the convex part 32 on the crutch 3, which can facilitate the top of the crutch 3 to separate from the crutch groove 12 during the action of crossing the line; the rope binding hole 33 can facilitate the maintenance personnel to bind one end of the lifting rope on the crutch 3; the elastic member can improve the swinging speed of the crutch 3, so that the hook ring 31 can be quickly hooked into the reverse buckle part 2.

[0034] During preloading, the elastic member needs to be hooked on the hooking part 18 and the pulling groove 34 respectively, so that the elastic member is in a stretched state; when the hook ring 31 is separated from the clamping groove 41, the top of the crutch 3 is pulled by the elastic member, so that the hook ring 31 swings towards the reverse buckle part 2 until the hook ring 31 is buckled and connected with the reverse buckle part 2.

[0035] It should be noted that the elastic member can be a rubber ring, a rubber band or other elastic materials.

[0036] As shown in the drawings, Figures 1 to 6 Further, the hooking part 18 includes two oppositely located clamping plates 181, a hook groove 182 is formed between the two clamping plates 181, and a gap is formed between the two clamping plates 181 and the crutch seat 1 and communicates with the hook groove 182; by arranging two oppositely located clamping plates 181, the problem of unhooking between the elastic member and the hooking part 18 during hooking can be prevented, in addition, even after the elastic member is separated from the crutch 3, the two clamping plates 181 can still be locked, avoiding the elastic member from falling from a high altitude, and improving the safety during use.

[0037] In this embodiment, the hook groove 182 is Z-shaped, and the gap between the clamping plate 181 and the crutch seat 1 forms a slot structure with a narrow opening, so that it is difficult for the elastic member to be pulled out of the Z-shaped hook groove 182 after being hooked.

[0038] As shown in the drawings, Figures 1 to 6As shown, further, the trigger part 4 comprises a top rod 42 and a second torsion spring assembly 43, the bottom of the cross-line slot 11 is provided with a connecting slot 19 near one side of the elbow slot 12; one end of the top rod 42 is connected with the connecting slot 19 through the second torsion spring assembly 43, the clamping slot 41 is located at one end of the top rod 42 near the connecting slot 19, the other end of the top rod 42 extends to one side of the reverse buckle part 2, and a trigger gap 110 is formed between the extending end of the top rod 42 and the bottom of the cross-line slot 11; in use, the hook ring 31 of the elbow rod 3 is pre-fixed through the clamping slot 41, when the cable line presses the extending end of the top rod 42, the extending end of the top rod 42 is pressed downward to the trigger gap 110, the clamping slot 41 is slowly inclined until the hook ring 31 is out of the clamping slot 41, the elbow rod 3 swings towards the reverse buckle part 2, when the cable line does not press the top rod 42, the top rod 42 is reset through the second torsion spring assembly 43; the trigger action of the elbow rod 3 is realized through the setting of the top rod 42 and the second torsion spring assembly 43, the whole process does not need complex operation of the operation and maintenance personnel, only needs to control the present rope threading device to move position up and down along the cable line to realize the hanging.

[0039] As shown, Figures 1 to 6 further, the second torsion spring assembly 43 comprises a second rotating pin 431 and a second torsion spring 432; both sides of the connecting slot 19 are respectively provided with second ear parts 120, and one side of the elbow rod base 1 located near the second ear parts 120 is provided with a third jack 130; the top rod 42 is provided with a fourth jack 421; one end of the top rod 42 is connected with the two second ear parts 120 through the second rotating pin 431, one end of the second rotating pin 431 is sleeved with the second torsion spring 432, one end of the second torsion spring 432 is clamped with the third jack 130, and the other end of the second torsion spring 432 is clamped with the fourth jack 421; in use, the rotating action of the top rod 42 is realized through the second rotating pin 431, and the reset action of the top rod 42 is realized through the second torsion spring 432; when the cable line presses the extending end of the top rod 42, the extending end of the top rod 42 is pressed downward to the trigger gap 110, the clamping slot 41 is slowly inclined until the hook ring 31 is out of the clamping slot 41, the elbow rod 3 swings towards the reverse buckle part 2, when the cable line does not press the top rod 42, the top rod 42 is reset through the second torsion spring 432; the trigger action of the elbow rod 3 is realized through the setting of the top rod 42 and the second torsion spring assembly 43, the whole process does not need complex operation of the operation and maintenance personnel, only needs to control the present rope threading device to move position up and down along the cable line to realize the hanging.

[0040] As shown, ​Further, the clamping rod part 5 comprises a buckle body 52 and a buckle plate 53; the crutch base 1 is provided with a connecting seat 140, and the two sides of the connecting seat 140 are respectively provided with a hinged part 150 and a lock part 160; the clamping rod groove 51 is located between the buckle body 52 and the connecting seat 140, one side of the buckle body 52 is hinged with the hinged part 150, the other side of the buckle body 52 is provided with a outward opening breakable groove 521, the buckle plate 53 is hinged with the breakable groove 521 through a connecting rod 54, and one end of the buckle plate 53 close to the lock part 160 is provided with a buckle rod 531 matched with the lock part 160; in use, the operating personnel breaks the buckle plate 53 to open and close the clamping rod groove 51, so as to achieve the purpose of disassembling and assembling the insulating rod; in the process of assembling the insulating rod, the operating personnel presses the buckle plate 53 to make the buckle rod 531 and the lock part 160 separated, so as to complete the locking action of the insulating rod; in the process of disassembling the insulating rod, the operating personnel breaks the buckle plate 53 to make the buckle rod 531 and the lock part 160 separated, so as to complete the unlocking action of the insulating rod.

[0041] In the embodiment, the buckle body 52 is provided with a pressing plate 522 in the breakable groove 521, and one side of the buckle plate 53 is provided with a breakable hand part 532 which can abut against the pressing plate 522; through the cooperation of the pressing plate 522 and the breakable hand part 532, the clamping rod part 5 can be more reliable in the locking state, and the operating personnel can break the buckle plate 53 from the buckle body 52, so as to facilitate the disassembling and assembling of the insulating rod.

[0042] In summary, in the process of threading the cable, one end of the lifting rope is tied on the top of the crutch 3, the other end of the lifting rope is naturally hung down, the bottom of the crutch 3 is clamped with the clamping groove 41, so that the crutch 3 is in the state of being triggered, when the cable passes through the cross slot 11, the crutch 3 is pressed against the trigger part 4, until the cable presses the trigger part 4 to make the clamping groove 41 rotate, so as to release the bottom of the crutch 3, and the bottom of the crutch 3 swings to the reverse buckle part 2, until the bottom of the crutch 3 and the reverse buckle part 2 complete the locking action, and the cross slot 11 forms a closed space, the cable is enclosed in the cross slot 11 through the crutch 3, at this time, the operating personnel can move the threading device downward, so that the cable lifts the crutch 3 upward, until the top of the crutch 3 is separated from the crutch groove 12, and the top of the crutch 3 drives one end of the lifting rope to cross over the cable, and the top of the crutch 3 falls into the cross slot 11 due to inertia, so as to complete the threading action of the lifting rope, when the operating personnel recovers the threading device, the operating personnel can pull the lifting rope to slowly hang on the cable, the whole hanging process is simple and fast, and the operating personnel does not need to complete complex operation, the whole hanging process is not affected by the terrain environment, and can meet the demand of the threading in complex environment.

[0043] It can be understood that, for those ordinary skilled in the art, equivalent replacements or changes can be made according to the technical solutions and the inventive concept of the present application, and all the changes or replacements shall fall within the protection scope of the appended claims of the present application.

Claims

1. A threader characterized by, The crutch seat is provided with a cross-line groove opening upward, a reverse buckle part is arranged on one side of the cross-line groove, a crutch groove is arranged on the other side of the cross-line groove, a crutch is arranged in the crutch groove and can swing to the reverse buckle part, and the reverse buckle part is used for buckling the bottom of the crutch. The reverse buckle part comprises a reverse buckle plate and a first torsional spring assembly, an activity groove opening toward the cross-line groove is arranged on the crutch seat, and a hook part is arranged above the activity groove. The top of the crutch seat is provided with a rotating groove opening upward on both sides of the crutch groove, a hooking part is arranged below the crutch groove, the bottom of the crutch is provided with a hook ring matched with the reverse buckle plate, the crutch is provided with a convex part matched with the rotating groove on both sides, and the top of the crutch is provided with a binding rope hole and a pulling groove used for connecting a hanging rope. The trigger part comprises a top rod and a second torsional spring assembly, and a connecting groove is arranged on one side of the bottom of the cross-line groove close to the crutch groove.

2. A fish tape according to claim 1, wherein, The crutch seat is provided with a clamping rod part outside the reverse buckle part, and a clamping rod groove is arranged in the clamping rod part and can be opened and closed.

3. A fish tape according to claim 1, wherein, The reverse buckle plate is inclined to the top of the crutch.

4. A fish tape according to claim 1, wherein, The first torsional spring assembly comprises a first rotating pin and a first torsional spring, the activity groove is provided with a first ear part on both sides, the crutch seat is provided with a first insertion hole below the first ear part, the reverse buckle plate is provided with a second insertion hole, the reverse buckle plate is connected with the two first ear parts through the first rotating pin, the first torsional spring is sleeved on one end of the first rotating pin, one end of the first torsional spring is clamped with the first insertion hole, and the other end of the first torsional spring is clamped with the second insertion hole.

5. A fish tape according to claim 1, wherein, The hooking part comprises two opposite clamping plates, a hook groove is formed between the two clamping plates, and a gap is formed between the two clamping plates and the crutch seat and communicates with the hook groove.

6. A fish tape according to claim 1, wherein, The second torsion spring assembly comprises a second rotating pin and a second torsion spring; two sides of the connecting groove are respectively provided with second ears, and one side of the crutch seat located at one side of the second ear is provided with a third insertion hole; the top rod is provided with a fourth insertion hole; one end of the top rod is connected with the two second ears through the second rotating pin, the second torsion spring is sleeved on one end of the second rotating pin, one end of the second torsion spring is clamped with the third insertion hole, and the other end of the second torsion spring is clamped with the fourth insertion hole.

7. A fish tape according to claim 2 wherein, The clamping rod part comprises a buckle body and a buckle plate; the crutch seat is provided with a connecting seat, two sides of the connecting seat are respectively provided with a hinged part and a lock part; the clamping rod groove is located between the buckle body and the connecting seat, one side of the buckle body is hinged with the hinged part, the other side of the buckle body is provided with a outwardly opening breaking groove, the buckle plate is hinged with the breaking groove through a connecting rod, and one end of the buckle plate close to the lock part is provided with a clamping rod matched with the lock part.

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