CN212136855U

CN212136855U - High-voltage cable safety puncture device

Info

Publication number: CN212136855U
Application number: CN202020228166.XU
Authority: CN
Inventors: 么洪坤
Original assignee: Kunming Ruijian Power Transmission And Distribution Engineering Co ltd
Current assignee: Kunming Ruijian Power Transmission And Distribution Engineering Co ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-12-11
Anticipated expiration: 2030-02-28

Abstract

The utility model discloses a high-voltage cable safety pricking device, relating to the technical field of cable detection, comprising a cable fixing device fixed on a high-voltage cable, a self-contained nail shooting device used for pricking the high-voltage cable, and a nail shooting device used for driving the nail shooting device to prick; the cable fixing device comprises a cable pressing plate and a semi-annular buckle hinged to the cable pressing plate, a clamping groove is further formed in the cable pressing plate, the other end of the semi-annular buckle is provided with a thread clamping column capable of being clamped into the clamping groove, a fixing knob fixed with the cable pressing plate and the thread clamping column is installed on the thread clamping column, and a connecting base connected with the nail shooting device in a detachable mode is installed on the cable pressing plate.

Description

High-voltage cable safety puncture device

Technical Field

The invention relates to the technical field of cable detection, in particular to a high-voltage cable safety puncture outfit.

Background

Power cabling is one of the main components currently used in electrical networks for transmitting and distributing electrical energy. Compared with an overhead line, the power cable core is wrapped by insulation with a certain thickness, so that the power cable has the advantage of preventing personal electric shock, but direct electricity testing cannot be carried out at positions outside a cable terminal, and certain difficulty is brought to workers for correctly judging whether the cable is electrified or not.

In order to prevent the charged cable from being misjudged to hurt the working personnel, the following regulations are made in the electric industry safety work regulation issued by the original energy department: before sawing the cable, the cable must be checked to be consistent with a cable drawing, and after the cable is surely verified to be powerless, the cable can work after being nailed into a cable core by a grounded iron drill rod with a wooden handle. The principle of the grounding iron nail with the wooden handle (generally called as a cable pricker) is to adopt a grounding protection mode to eliminate potential safety hazards caused by misjudgment of the cable.

With the rapid development of cable industry, the crosslinked polyethylene insulated cable gradually replaces the oiled paper insulated cable and is applied to more and more extensive fields. But the insulation hardness is higher, and the difficulty of nailing the 'grounded iron nail with a wooden handle' into the cable core by manpower is greatly improved, and meanwhile, certain potential safety hazards also exist because the worker is close to the working place. Aiming at the problem, tool manufacturers at home and abroad develop and produce a series of products including a remote control nail-shooting type high-voltage cable safety trial-puncturing device (hereinafter referred to as a remote control nail-shooting stabber) and strive to reduce the safety risk in the cable cutting work.

The remote-control nail-shooting pricker is based on the principle of door nail-shooting gun and is composed of automatic mechanical part, electronic detection control circuit and electromechanical control part. The remote control type high-voltage cable safety trial binding device consists of a control body and a gun body; the control body part mainly plays the roles of electric control and bolt control, and when the controller receives a remote control command and confirms the correctness of a received signal through strict judgment during work, the control body part controls the execution mechanism to operate, and the execution mechanism drives the bolt to dig the bolt. The firing pin impacts the nail shooting bullet to initiate blasting, and the blasting gas pushes the piston to strike the shooting nail and drive the shooting nail into a cable in a required position.

The nail shooting bullet belongs to a non-military bullet, but has high lethality due to the contained gunpowder, and is extremely easy to be modified into a bullet for a gun so as to be limited in use. The problem that the nail shooting bullet is easily modified into a bullet is solved by integrating gunpowder on the nail shooting and shooting the nail with the self-contained energy. When the high-voltage cable is safely tried to be pricked by using the self-carrying shooting nail, certain danger still exists, when workers press the remote control button and keep in contact with the remote control button, if the tried cable is electrified, the cable can form a passage with the workers through the shooting nail, the firing pin and the remote control electric wire at the moment when the shooting nail is pricked into the cable, and casualties are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high tension cable safety ware of stabbing solves the safety problem that current high tension cable ware of stabbing probably produced, reaches safer efficient purpose.

One aspect of the utility model provides a high-voltage cable safety pricking device, which comprises a cable fixing device fixed on a high-voltage cable, a self-provided shooting nail for pricking the high-voltage cable and a nail shooter for driving the shooting nail to prick; the cable fixing device comprises a cable pressing plate and a semi-annular buckle hinged to the cable pressing plate, a clamping groove is further formed in the cable pressing plate, the other end of the semi-annular buckle is provided with a thread clamping column capable of being clamped into the clamping groove, a fixing knob fixed with the cable pressing plate and the thread clamping column is installed on the thread clamping column, and a connecting base connected with the nail shooting device in a detachable mode is installed on the cable pressing plate. The cable pressing plate and the semi-annular buckle hinged on the cable pressing plate can be fast and firmly fixed on a high-voltage cable to be punctured. And then the nail shooter is fixed on the cable pressing plate through the connecting base to prick the high-voltage cable. Wherein, a hole for penetrating the nail is arranged between the connecting base and the cable pressing plate, so that the nail shooter can smoothly insert the nail into the high-voltage cable. When using cable fixing device and high tension cable's fixed, the fixed knob of twisting the semi-annular buckle earlier makes the screw thread card post shift out from the draw-in groove, opens back cover on high tension cable with cable clamp plate and semi-annular buckle around the pin joint, presses the cable clamp plate on high tension cable again, and rotatory semi-annular buckle makes screw thread card post card go into in the draw-in groove of cable clamp plate, and rotatory fixed knob is fixed can't rotate on high tension cable completely to cable fixing device.

The further technical scheme is that the nail shooting device comprises a hollow connecting handle, a main body sleeve arranged at the upper end of the connecting handle, a hammer assembly arranged in the main body sleeve, an electromagnetic valve arranged at the top of the main body sleeve and a compressed gas cylinder controlled to be opened and closed through the electromagnetic valve; the electromagnetic valve is wirelessly connected with a remote control device provided with a wireless remote control emitter through a wireless remote control receiver. The connecting handle is detachably connected with the connecting base; the hammer assembly includes a hammer piston engaged with an inner surface of the main body sleeve, a hammer drill point installed at a lower portion of the hammer piston, and a return spring for returning the hammer piston. The nail shooter can be installed on the cable fixing device through the connection of the connecting base and the connecting handle, wherein the self-contained shooting nail is placed in a cavity of the connecting handle in advance. Thereby can be connected opening and shutting of long-range wireless control solenoid valve with the wireless remote control receiver of solenoid valve through remote control unit's wireless remote control transmitter, compressed air inflation in the compressed gas cylinder when the solenoid valve is opened and promote the hammer piston downstream, the quick downstream of hammer drill point pierces through the cartridge bag of installing on the area can shooting nail, the cartridge bag initiation blasting, inside the gaseous promotion of blasting penetrated the nail and will penetrate the nail and squeeze into the cable. The return spring returns the hammer piston by means of elastic force. Because the remote control device is connected with the nail shooter through wireless remote control, the high-voltage cable cannot be electrically connected when electrified, and therefore the work personnel cannot be harmed even if the work personnel operate by mistake. The compressed gas cylinder can be a compressed air cylinder, a compressed nitrogen cylinder or a compressed carbon dioxide cylinder, and other safe compressed gas cylinders can also be selected.

A further technical scheme is that the main sleeve is provided with a pressure overflow hole and a balance hole, and the balance hole is arranged below the bottom surface of the upper dead point of the piston; the pressure overflow hole is arranged above the top surface of the lower dead center of the piston; when the piston moves, the side edge of the piston can block the overflow pressure hole and the balance hole. The remote control device controls the electromagnetic valve to be opened, compressed air in the compressed air bottle expands and pushes the hammer piston to move downwards, the propellant powder bag arranged on the shooting nail can be pierced when the hammer piston moves to the lower stop, the electromagnetic valve is closed, and gas above the hammer piston is discharged through the pressure overflow hole. The cartridge bag initiates the blasting, and inside the explosive gas promoted to penetrate the nail and will penetrate the nail and squeeze into the cable, some explosive gas was along with the upward motion of hammer piston, and the balance hole exposes and prevents that the main part sleeve inner chamber from damaging with blasting gas discharge when hammer piston moved the top dead center.

A further technical proposal is that the connecting base is fixedly connected to a cable pressing plate; the connecting base comprises a cylindrical body and a sliding sleeve arranged outside the cylindrical body, and the cross section of the cylindrical body is an annular shape consisting of a circular outer ring and a regular hexagonal inner ring; the side surface of the cylindrical body is provided with three stepped holes, a double-headed pin and a spring are arranged in the stepped holes, the stepped holes are also provided with annular fasteners, so that one end of the double-headed pin can penetrate out, and the stroke of the sliding sleeve covers the stepped holes; the connecting handle is a regular hexagon cylinder inserted into the cylindrical barrel-shaped body, and a fixing groove matched with the pin is formed in the side surface of the connecting handle; the connecting handle is provided with a cylindrical hole which is provided with a shooting nail along the axis. Connect the base and be connected the handle through regular hexagon structure, can prevent that the ail shooter from carrying out pivoting for connecting the base, the structure is more stable than using threaded connection to its effort that can bear is also bigger than ball formula quick-operation joint. Wherein the axis of the stepped hole vertically bisects three alternate sides of the regular hexagon of the cross section of the cylindrical tubular body, so that the stress of the double-head pin is more uniform. The connecting handle is provided with a cylindrical hole which is provided with a shooting nail along the axis and is connected with the inner cavity of the main body sleeve, and the pointed end of a hammer drill point arranged in the main body sleeve can enter the cylindrical hole. The cross section of the cylindrical body is provided with the regular hexagon inner ring, so that the structure can not generate axial rotation during installation and can increase the wall thickness of the cylindrical body, and the ball type quick joint with the cylindrical structure can bear larger acting force. Use the double-end pin, spring and sliding sleeve part come to regard as cylinder tube-shape body and connection between the handle to be connected and fixed part, wherein double-end pin and spring pass through annular fastener and install in the shoulder hole, the spring makes double-end pin one end outwards stretch out annular fastener and the one end that inwards contracts in the shoulder hole, can push into the shoulder hole with double-end pin one end outwards when the sliding sleeve that cylinder tube-shape body set up slides and covers the shoulder hole in, and double-end pin one end inwards then can stretch into inside the tube-shape cylinder tube-shape body, if at this moment the connection handle has inserted in the cylinder tube-shape body part, then the fixed slot that the connecting handle was then stretched into simultaneously to double-end pin one end inwards makes it locked. To make cylinder tube-shape body part and connection handle separately, only need to slide the sliding sleeve and make the shoulder hole spill, the spring makes the outside motion of double-end pin retract from the fixed slot through elasticity, again with cylinder tube-shape body part with connection handle axial separation can, install like this and dismantle all very convenient and fast. Wherein the ring post fastener can be a ring-shaped bolt or rivet.

The matching surface of the sliding sleeve and the cylindrical body is a horn-shaped inclined surface, the inclined surface is contacted with one end of the double-headed stud pin, and the double-headed stud pin can be pushed into the stepped hole so that the other end of the double-headed stud pin is inserted into the cylindrical body; the cylindrical body is also externally provided with a limiting ring of the sliding sleeve. The sliding sleeve and the matching surface of the cylindrical body are horn-shaped inclined surfaces, the large opening end of each horn-shaped inclined surface can wrap the extending double-end pin, then the sliding horn-shaped inclined surfaces along with the sliding sleeve are gradually reduced in the surface distance between the double-end pin and the cylindrical body, so that the double-end pin is gradually pressed into the cylindrical body, and the other end of the double-end pin extends into the cylindrical body through the stepped hole.

A further technical scheme is that a second spring is further installed between the sliding sleeve and the limiting ring, so that the double-headed pin is inserted into the cylindrical body in a normal state. The double-end pin keeps being inserted into the normal state inside the cylindrical barrel-shaped body by arranging the second spring between the sliding sleeve and the limiting ring, so that the clamping state can be ensured to be the normal state when the connecting handle is connected with the cylindrical barrel-shaped body, and the danger caused by abnormal falling can be avoided.

According to a further technical scheme, the shooting nail is a self-contained shooting nail and comprises a shooting nail body, a stop piece arranged at the tip end of the shooting nail body and a kinetic energy assembly arranged at the tail part of the shooting nail, and the length of the shooting nail body is 70-72 mm. Wherein the stop tab prevents the cable from skin damage when the nail is driven into the firing pin. The self-contained energy shooting nail can be customized, wherein the length of the shooting nail can be 70 mm, 71 mm and 72mm, and thus the puncture of most high-voltage cables can be satisfied. The self-energy shooting nail with the kinetic energy component arranged on the shooting nail can prevent lawless persons from modifying the shooting nail device into a weapon with killing performance and influencing public safety. The kinetic energy assembly can comprise a shell and a kinetic energy medicament, the shell comprises two cavities, dry powder primer is placed in one cavity to serve as primer, and gunpowder or nitrocotton prepared tabletting is placed in the other cavity to serve as the kinetic energy medicament. When the hammer drill point is used, the hammer drill point impacts the shell and breaks down the shell to impact the bottom powder at the bottom of the kinetic energy shell, and meanwhile, the kinetic energy agent is initiated to generate a large amount of high-energy gas, so that the nail is shot into the high-voltage cable instantly.

The cylindrical hole of the connecting handle is communicated with the inner cavity of the main sleeve through a small hole; the diameter of the small hole is just enough to enable the hammer drill needle to penetrate into the kinetic energy assembly with the self-contained shooting nail. The function of the small hole is to displace the hammer drill point and to protect the hammer drill point from being damaged by the blasting of the passive component.

According to a further technical scheme, a movable supporting sleeve is further mounted in the cylindrical body, the movable supporting sleeve limits the movable position through a shaft shoulder in the cylindrical body, the movable supporting sleeve is far away from the cable pressing plate through a third spring, and the movable supporting sleeve is in contact with the connecting handle after the connecting handle is inserted into the cylindrical body and generates axial acting force through the third spring. The movable support sleeve is arranged in the cylindrical body and can provide support for the connecting handle when being connected with the connecting handle, and the connecting handle is prevented from shaking in the cylindrical body. The third spring is used for providing axial force for the movable supporting sleeve, so that the cylindrical body is more stably connected with the connecting handle.

The utility model discloses a principle is elucidated: the electromagnetic valve is controlled to be opened by using the remote control device to enable compressed air in the compressed air cylinder to be sprayed into a cavity between the hammer piston and the main body sleeve, the gas sprayed out of the compressed air cylinder is increased to generate pressure and push the hammer piston to move downwards, the hammer drill point moves downwards quickly and pierces a cartridge installed on the self-contained shooting nail, the cartridge initiates blasting, and the blasting gas pushes the shooting nail and drives the shooting nail into the cable to complete high-voltage cable piercing. The remote control device controls the electromagnetic valve to open the compressed gas cylinder through the wireless remote control transmitter and the wireless remote control receiver, so that the compressed gas cylinder is not in direct contact with the hammer assembly and the shooting nail, a loop cannot be generated, and the compressed gas cylinder is safer and more reliable. Make ail shooter and cable fixing device high-speed joint through the combination mode that uses regular hexagon, can not be rotatory around the axle each other after connecting to regular hexagon's connected mode can make its wall thickness increase in the cylinder tube-shape body of connecting the base uses, has bigger intensity to bear stronger effort in ball formula high-speed joint head. The double-headed pin is used as a locking device after the cylindrical barrel-shaped body and the connecting handle are connected, the structure is stable and can bear larger axial force, and the cylindrical barrel-shaped body and the connecting handle cannot be easily separated due to the larger axial force. The sliding sleeve can be used for extruding the double-head pin and enabling the double-head pin to move perpendicular to the axis of the cylindrical body, so that the cylindrical body and the connecting handle can be locked and released, and the nail shooter can be mounted and dismounted on the high-voltage cable more conveniently.

The above technical scheme of the utility model has following profitable technological effect: the remote control device is used for remotely controlling the opening of the compressed gas cylinder to excite the shooting nail, so that the shooting nail is safer, and potential safety hazards to workers cannot be caused if the high-voltage cable is electrified; through the combination mode of regular hexagon and double-end pin can be fast with penetrating the nail ware and fix on high tension cable, can not produce relative rotary motion moreover, the installation is more firm, and it is convenient to dismantle, improves work efficiency.

Drawings

Fig. 1 is a schematic structural view according to embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view of a nail shooter according to embodiment 1 of the invention;

fig. 3 is a schematic view of the installation of a cable fixing device according to embodiment 1 of the present invention;

fig. 4 is a cross-sectional view of a cable fixing device according to embodiment 1 of the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4;

FIG. 6 is a schematic view of the connection between the cable fixing device and the nail shooter according to the embodiment of the invention 1;

fig. 7 is a sectional view showing the connection base and the connection handle according to embodiment 1 of the present invention;

fig. 8 is a schematic structural view of the nail capable of being shot by the utility model in embodiment 1.

Reference numerals: 1: a cable fixing device; 2: the nail can be shot by itself; 3: a nail shooter; 4: connecting a base; 6: a high voltage cable; 11: a cable pressing plate; 111: a card slot; 112: a threaded clamping column; 12: fixing the knob; 13: a semi-annular buckle; 21: shooting the nail body; 22: a stopper piece; 23: a kinetic energy assembly; 31: a connecting handle; 32: a main body sleeve; 33: a hammer assembly; 34: an electromagnetic valve; 35: a compressed gas cylinder; 36: a remote control device; 37: a wireless remote control receiver; 311: fixing grooves; 312: a cylindrical bore; 313: a small hole; 331: a hammer piston; 332: a hammer drill point; 333: a return spring; 41: a cylindrical body; 42: a sliding sleeve; 43: a stepped hole; 44: a double-ended pin; 45: a spring; 46: an annular fastener; 47: a limiting ring; 48: a second spring; 49: a third spring; 411: a movable support sleeve; 412: a shaft shoulder; 421: a trumpet-shaped inclined plane; 51: pressure overflow holes; 52: and (4) balancing holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

Example 1

As shown in figure 1, the high-voltage cable safety puncture outfit comprises a cable fixing device 1 fixed on a high-voltage cable 6, a nail shooter 3 for driving a nail to puncture, a solenoid valve 34, a wireless remote control receiver 37 for controlling the solenoid valve 34 and a remote control device 36 with a wireless remote control transmitter are arranged on the nail shooter 3, and a self-powered nail 2 for puncturing the high-voltage cable is also arranged in the nail shooter 3. As shown in fig. 3, the cable fixing device 1 includes a cable pressing plate 11, a semi-ring buckle 13 hinged to the cable pressing plate 11, a clamping groove 111 further provided on the cable pressing plate 11, a thread clamping column 112 capable of being clamped into the clamping groove 111 is provided at the other end of the semi-ring buckle 13, a fixing knob 12 to be fixed with the cable pressing plate 11 and the thread clamping column 112 is installed on the thread clamping column 112, and a connection base 4 detachably connected with the nail shooter 3 is installed on the cable pressing plate 11. As shown in FIG. 8, the self-contained shooting nail 2 comprises a shooting nail body 21, a stop piece 22 arranged at the tip of the shooting nail body 21 and a kinetic energy assembly 23 arranged at the tail of the shooting nail; the length of the nail shooting body 21 is 72 mm.

As shown in fig. 2, the nailer 3 includes a hollow connecting handle 31, a main body sleeve 32 mounted on the upper end of the connecting handle 31, a hammer assembly 33 mounted in the main body sleeve 32, a solenoid valve 34 mounted on the top of the main body sleeve 32, and a compressed air cylinder 35, the compressed air cylinder 35 being mounted in the main body sleeve 32 through a screw cap, the solenoid valve 34 being connected to a remote control unit 36. The connecting handle 31 is detachably connected with the connecting base 4; the hammer assembly 33 includes a hammer piston 331 engaged with an inner surface of the body sleeve 32, a hammer pin 332 installed at a lower portion of the hammer piston 331, and a return spring 333 for returning the hammer piston 331. The main body sleeve 32 is provided with a pressure overflow hole 51 and a balance hole 52, and the balance hole 52 is arranged below the bottom surface of the upper dead point of the piston; the overflow hole 51 is arranged above the top surface of the lower dead center of the piston; the side of the piston can block the pressure relief hole 51 and the balance hole 52 when the piston is moving.

As shown in fig. 3 to 5, the connection base 4 is fixedly connected to the cable pressing plate 11; the connecting base 4 comprises a cylindrical body 41, a sliding sleeve 42 and a second spring 48 which are arranged outside the cylindrical body 41, and the cross section of the cylindrical body 41 is an annular shape consisting of a circular outer ring and a regular hexagonal inner ring; the side surface of the cylindrical body 41 is provided with stepped holes in two circles, each circle is provided with three stepped holes 43, and the stepped holes are distributed on the sides of the regular hexagon at intervals. The double-headed stud 44 and the spring 45 are arranged in the stepped hole 43, the annular fastener 46 is also arranged on the stepped hole 43 to enable one end of the double-headed stud 44 to penetrate out, and the stroke of the sliding sleeve 42 covers the stepped hole 43. As shown in fig. 6 and 7, the connecting handle 31 is a regular hexagonal cylinder inserted into the cylindrical body 41, and has a fixing groove 311 formed on a side surface thereof to be engaged with a pin; the connecting handle 31 is provided with a cylindrical hole 312 along the axis thereof, and the cylindrical hole is provided with the shooting nail 2. The matching surface of the sliding sleeve 42 and the cylindrical body 41 is a horn-shaped inclined surface 421, the inclined surface contacts with one end of the double-headed stud 44, the double-headed stud 44 can be pushed into the stepped hole 43, the other end of the double-headed stud 44 is inserted into the cylindrical body 41, and the limiting ring 47 of the sliding sleeve 42 is further installed outside the cylindrical body 41. The cylindrical hole 312 of the connecting handle 31 is communicated with the inner cavity of the main body sleeve 32 through a small hole 313; the diameter of the hole 313 is just enough to allow the hammer drill bit 332 to penetrate into the kinetic energy assembly 23 of the self-energizing nail 2.

A movable supporting sleeve 411 is further installed in the cylindrical body 41, the movable supporting sleeve 411 limits the movable position through a shaft shoulder 412 in the cylindrical body 41, the movable supporting sleeve 411 is far away from the cable pressing plate 11 through a third spring 49, and the movable supporting sleeve 411 contacts with the connecting handle 31 after the connecting handle 31 is inserted into the cylindrical body 41 and generates an axial acting force through the third spring 49.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A high-voltage cable safety puncture outfit is characterized by comprising a cable fixing device (1) fixed on a high-voltage cable, a self-provided shooting nail (2) used for puncturing the high-voltage cable and a nail shooter (3) for driving the shooting nail to puncture; cable fixing device (1) include cable clamp plate (11) and with cable clamp plate (11) articulated semicircular buckle (13), draw-in groove (111) that still sets up on cable clamp plate (11), the other end of semicircular buckle (13) has can block into screw thread card post (112) of draw-in groove (111), install on screw thread card post (112) with cable clamp plate (11) with fixed knob (12) that screw thread card post (112) are fixed, install on cable clamp plate (11) with connect base (4) that the connection can be dismantled in ail shooter (3).

2. The high-voltage cable safety puncture outfit according to claim 1, characterized in that the nailing device (3) comprises a hollow connecting handle (31), a main body sleeve (32) arranged at the upper end of the connecting handle (31), a hammer component (33) arranged in the main body sleeve (32), a solenoid valve (34) arranged at the top of the main body sleeve (32) and a compressed gas cylinder (35) controlled to open and close by the solenoid valve (34); the electromagnetic valve (34) is wirelessly connected with a remote control device (36) provided with a wireless remote control transmitter through a wireless remote control receiver (37);

the connecting handle (31) is detachably connected with the connecting base (4); the hammer assembly (33) includes a hammer piston (331) engaged with an inner surface of the body sleeve (32), a hammer drill point (332) installed at a lower portion of the hammer piston (331), and a return spring (333) returning the hammer piston (331).

3. The high voltage cable safety piercer according to claim 2, wherein said main body sleeve (32) is provided with a pressure relief hole (51) and a balance hole (52), said balance hole (52) being provided below an upper dead center bottom surface of said hammer piston (331); the pressure overflow hole (51) is arranged above the top surface of the lower dead center of the hammer piston (331); when the hammer piston (331) is moving, the side of the hammer piston (331) can block the relief hole (51) and the balance hole (52).

4. The high-voltage cable safety puncture outfit according to claim 2, characterized in that the connecting base (4) is fixedly connected to the cable pressing plate (11); the connecting base (4) comprises a cylindrical body (41) and a sliding sleeve (42) arranged outside the cylindrical body (41), and the cross section of the cylindrical body (41) is annular consisting of a circular outer ring and a regular hexagonal inner ring; the side surface of the cylindrical body (41) is provided with three stepped holes (43), a double-headed pin (44) and a spring (45) are arranged in each stepped hole (43), the stepped holes (43) are also provided with annular fasteners (46), the annular fasteners (46) enable one end of the double-headed pin (44) to penetrate out, and the stepped holes (43) are covered by the stroke of the sliding sleeve (42);

the connecting handle (31) is a regular hexagon cylinder inserted into the cylindrical barrel-shaped body (41), and a fixing groove (311) matched with the pin is formed in the side surface of the connecting handle (31); the connecting handle (31) is provided with a cylindrical hole (312) for installing the self-contained shooting nail (2) along the axis.

5. The high-voltage cable safety puncture device according to claim 4, wherein the matching surface of the sliding sleeve (42) and the cylindrical body (41) is a flared inclined surface (421), the inclined surface is in contact with one end of the double-headed stud pin (44), and the double-headed stud pin (44) can be pushed into the stepped hole (43) so that the other end of the double-headed stud pin (44) is inserted into the cylindrical body (41).

6. The high-voltage cable safety puncture device according to claim 1, characterized in that the self-contained shooting nail (2) comprises a shooting nail body (21), a stop piece (22) arranged at the tip of the shooting nail body (21), and a kinetic energy component (23) arranged at the tail of the shooting nail; the length of the shooting nail body (21) is 70-72 mm.

7. The high-voltage cable safety puncture device according to claim 5, characterized in that the cylindrical hole (312) of the connecting handle (31) is communicated with the inner cavity of the main body sleeve (32) through a small hole (313); the diameter of the small hole (313) is just enough to enable the hammer drill pin (332) to penetrate into the kinetic energy component (23) of the self-contained shooting nail (2).

8. The high-voltage cable safety puncture device according to claim 4, wherein a movable support sleeve (411) is further installed in the cylindrical body (41), the movable support sleeve (411) limits the movable position through a shaft shoulder (412) in the cylindrical body (41), the movable support sleeve (411) is far away from the cable pressing plate (11) through a third spring (49), and the movable support sleeve (411) is in contact with the connecting handle (31) after the connecting handle (31) is inserted into the cylindrical body (41) and generates axial acting force through the third spring (49).