Simple electric power cable residual voltage releaser and use method thereof

Abstract

The invention discloses an electric power simple cable residual voltage releaser, and belongs to the technical field of power transmission and distribution, the electric power simple cable residual voltage releaser comprises a frame body, the frame body is of a side-wall-free structure, an inner box is fixedly arranged in the frame body, and a cable end fixing assembly is arranged in the inner box; an auxiliary assembly is arranged at the upper end of the frame body and is used for conveniently moving the frame body; the inner bottom surface of the frame body is in sliding connection with an ampere meter assembly, and the ampere meter assembly is connected with the fixing assembly through a first wire; the left end of the frame body is provided with a grounding assembly, the grounding assembly is connected with the ammeter assembly through a second wire, and the bottom of the frame body is provided with a plurality of stable foot pads. The end of the cable is firmly fixed in the inner box through the fixing assembly, the grounding assembly is connected with the ground, residual voltage in the cable can be quickly released, the structure is simple, operation is easy, and practicability is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of power transmission and distribution, and particularly relates to a simple cable residual voltage release device for electricity and its usage method. Background Art

[0002] A cable residual voltage release device is a device used to release the residual voltage of a cable in a power system. It is usually used after the cable is powered off to ensure the safety of operators and avoid equipment damage. It is a device used to safely release the remaining voltage (also known as residual voltage) in the cable. Its main function is to ensure that any charge on the cable is completely eliminated before the cable is repaired, maintained, or reconnected, thereby protecting the safety of operators and preventing equipment damage caused by residual voltage. The Chinese national standard GB / T 1984 "AC High-Voltage Circuit Breakers" and the IEC 62271 series of International Electrotechnical Commission standards both contain regulations on this part of the content. Due to spatial limitations, most cable trenches are laid with a mixture of multiple voltage levels, which easily generates induced voltage on the power-off maintenance line, posing a safety hazard to the maintenance work. Therefore, a residual voltage release device for cable maintenance is needed to improve the safety of daily cable maintenance work. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a simple cable residual voltage release device for electricity and its usage method, which solves the problems in the above background art.

[0004] The purpose of the present invention is achieved as follows: A simple cable residual voltage release device for electricity, which includes a frame body. The frame body has a structure without side walls, and an inner box is fixedly arranged inside the frame body. A cable end fixing component is arranged inside the inner box; an auxiliary component is arranged at the upper end of the frame body, and the auxiliary component is used to facilitate the movement of the frame body; the inner bottom surface of the frame body is slidably connected with an ammeter component, and the ammeter component is connected to the fixing component through a first wire; a grounding component is arranged at the left end of the frame body, and the grounding component is connected to the ammeter component through a second wire. Multiple stable foot pads are arranged at the bottom of the frame body. When in use, an operator holds the auxiliary component and moves the frame body into the cable trench, places the frame body in the trench. The stable foot pads are used to make the frame body placed stably in the trench. Insert the core of the cable end into the inner box, and fix the cable end firmly in the inner box through the fixing component, so that the first wire is electrically connected and conducted with the core inside the cable end. Connect to the ground through the grounding component to release the residual voltage inside the cable. The structure is simple, the operation is simple, and the practicability is strong.

[0005] Further, the inner box is the right side wall, and the fixing component includes a horizontal cylinder fixedly arranged inside the inner box. The thickness of the lower side wall of the horizontal cylinder is less than that of the upper side wall of the horizontal cylinder. A notch is formed in the upper side wall of the horizontal cylinder. The top wall of the inner box is threadedly connected with a screw rod, and the screw rod is made of insulating material. The upper end of the screw rod penetrates through the top wall of the frame body and extends above the frame body. A ring handle is fixedly connected to the upper end of the screw rod, and a conductor extrusion end is fixedly arranged at the lower end of the screw rod. The conductor extrusion end is connected to one end of the first wire. When in use, the end of the cable is inserted into the inside of the horizontal cylinder. The lower wall of the horizontal cylinder is set to be thinner, which is convenient for the insertion of the cable end. After the cable end is inserted into the horizontal cylinder, the operator holds the ring handle and rotates it. The rotation of the ring handle drives the screw rod to rotate. During the rotation of the screw rod, the conductor extrusion end moves downward, so that the conductor extrusion end presses on the upper part of the battery core of the cable end, making the battery core electrically connected and conducting with the conductor extrusion end. The residual voltage inside the cable flows into the first wire through the conductor extrusion end.

[0006] Further, an inclined groove is arranged on the inner bottom surface of the frame body, and the horizontal cylinder is fixedly arranged inside the inclined groove; a pointed end is fixedly arranged at the lower end of the conductor extrusion end, and a wiring terminal is fixedly arranged on the side wall of the conductor pressing end. A through hole is formed in the top wall of the inner box, and the inner end of the first wire penetrates through the through hole and is detachably connected to the wiring terminal. Through the arrangement of the inclined groove, it is convenient for the cable end to be smoothly inserted into the horizontal cylinder. Through the arrangement of the pointed end, during the process of the screw rod driving the conductor extrusion end to move downward, the pointed end can be inserted into the inside of the battery core, making the connection between the conductor extrusion end and the battery core more stable.

[0007] Further, the ammeter assembly includes a front guide groove and a rear guide groove formed on the inner bottom surface of the frame body. A front sliding seat and a rear sliding seat are respectively slidably connected inside the front guide groove and the rear guide groove. Vertical plates are fixedly arranged at the upper ends of the front sliding seat and the rear sliding seat. An ammeter device is fixedly arranged on the left side wall of the vertical plate, and a spring is fixedly connected to the right side wall of the vertical plate. The other end of the spring is fixedly connected to the left side wall of the inner box. The spring is used to stabilize the vertical plate when the vertical plate moves along the front guide groove and the rear guide groove; the outer end of the first wire is connected to the ammeter device; the ammeter device is connected to the inner end of the second wire. When in use, during the process of the screw rod moving downward, the conductor extrusion end moves downward to drive the first wire to move in the through hole, and the first wire moves into the inner box, thereby pulling the vertical plate to move. The vertical plate moves along the front guide groove and the rear guide groove. Through the arrangement of the front sliding seat and the rear sliding seat, the vertical plate does not deflect during the moving process. At the same time, during the movement of the vertical plate, the spring is compressed, and the restoring force of the spring offsets part of the pulling force of the first wire on the vertical plate, making the vertical plate move slowly and stably. The ammeter device is used to display whether there is still residual voltage in the cable, and the result can be directly read. When the ammeter shows zero, it means that there is no residual voltage in the cable and safe operation can be carried out.

[0008] Furthermore, the grounding component includes a horizontal plate fixedly connected to the left end of the frame body. An electric motor is fixedly arranged above the horizontal plate, and a support plate corresponding to the electric motor is fixedly arranged above the horizontal plate. The support plate is provided to ensure the stability of the rotating shaft during rotation. The output shaft of the electric motor is connected to a rotating shaft, the other end of the rotating shaft is rotatably matched with the support plate, a gear is fixedly connected to the side wall of the rotating shaft, and the gear is connected to a ground-piercing component. During use, the electric motor drives the rotating shaft to rotate, and the rotating shaft drives the gear to rotate synchronously, thereby driving the ground-piercing component to insert into the side wall soil of the cable trench, enabling the grounding component to be easily connected to the ground and releasing residual voltage.

[0009] Furthermore, the ground-piercing component includes a guide rail opened on the upper surface of the horizontal plate, and the guide rail extends into the frame body. A moving block is slidably connected inside the guide rail. The inner end of the moving block is connected to the outer end of the second wire. A meshing tooth is fixedly arranged on the upper surface of the moving block, and the meshing tooth is meshed with the gear. An earth-inserting rod is fixedly arranged at the outer end of the moving block, and a conical part is fixedly arranged at the outer end of the earth-inserting rod. During use, the gear of the rotating shaft drives the meshing tooth, thereby driving the moving block to move in the guide rail. When the moving block moves outwards, it drives the earth-inserting rod to pierce into the side wall soil of the trench. Through the setting of the conical part, the earth-inserting rod is more easily inserted into the side wall of the trench. It liberates the hands of the operators, is labor-saving and easy, and improves work efficiency.

[0010] Furthermore, the auxiliary component includes a front extension plate and a rear extension plate fixedly connected to the upper end of the frame body. An insulating rod is fixedly arranged between the front extension plate and the rear extension plate, and a protective layer is sleeved outside the insulating rod. An electric control device is fixedly arranged inside the frame body. The electric control device includes a battery pack, and the electric control device is connected to the electric motor. A limiting plate is vertically and fixedly connected to the inner end of the moving block, and the limiting plate is made of a conductor material. A side hole is opened on the left side wall of the frame body, and the inner diameter of the side hole is smaller than the diameter of the limiting plate. The outer end of the second wire is connected to the limiting plate. During use, it can be selected to directly connect the electric motor to an external socket, or a power supply is fixedly arranged in the inner box inside the frame body. Through the setting of the limiting plate, it is avoided that the earth-inserting rod falls off when the moving block moves outwards excessively.

[0011] A usage method of a simple cable residual voltage release device for electricity includes inserting the exposed core of the end of the cable into the inside of the inner box, fixing the core of the cable end through a fixing component, displaying whether there is voltage inside the cable through an ammeter component, and releasing the residual voltage inside the cable through a grounding component.

[0012] Advantages of the present invention: The auxiliary component is used to move the frame into the cable trench, and the stabilizing foot pads are used to make the frame placed stably inside the trench. The battery cores at the ends of the cables are inserted into the inner box, and the ends of the cables are firmly fixed in the inner box through the fixing component, enabling the first wire to be electrically connected and conduct with the battery cores inside the cable ends. It is connected to the ground through the grounding component to release the residual voltage inside the cable. The structure is simple, the operation is simple, and the practicability is strong. During use, the ends of the cables are inserted into the inside of the horizontal cylinder. The lower wall of the horizontal cylinder is set to be thinner, facilitating the insertion of the cable ends. After the cable ends are inserted into the horizontal cylinder, the operator holds the ring handle and rotates it. The rotation of the ring handle drives the screw to rotate. During the rotation of the screw, the conductor extrusion end is driven to move downward, pressing the conductor extrusion end above the battery cores of the cable ends, enabling the battery cores to be electrically connected and conduct with the conductor extrusion end. The residual voltage inside the cable flows into the first wire through the conductor extrusion end. Through the setting of the inclined groove, it is convenient for the cable ends to be smoothly inserted into the horizontal cylinder. Through the setting of the pointed end, during the process of the screw driving the conductor extrusion end to move downward, the pointed end can be inserted into the inside of the battery cores, making the connection between the conductor extrusion end and the battery cores more stable.

[0013] During the process of the screw moving downward, the conductor extrusion end moves downward and drives the first wire to move in the through hole. The first wire moves into the inner box, thereby pulling the vertical plate to move. The vertical plate moves along the front guide groove and the rear guide groove. Through the setting of the front sliding seat and the rear sliding seat, the vertical plate does not skew during the moving process. At the same time, during the movement of the vertical plate, the spring is compressed, and the restoring force of the spring offsets part of the pulling force of the first wire on the vertical plate, making the vertical plate move slowly and stably. The ammeter device is used to display whether there is still residual voltage in the cable, and the result can be directly read. When the ammeter shows zero, it means there is no residual voltage in the cable, and safe operation can be carried out. During use, the motor drives the rotating shaft to rotate, and the rotating shaft drives the gear to rotate synchronously, thereby driving the grounding component to insert into the side wall soil of the cable trench, enabling the grounding component to be easily connected to the ground and release the residual voltage. The gear of the rotating shaft drives the meshing teeth, thereby driving the moving block to move in the guide rail. When the moving block moves outward, it drives the grounding rod to penetrate into the side wall soil of the trench. Through the setting of the conical part, the grounding rod is more easily inserted into the side wall of the trench. It liberates the hands of the operator, saves effort and is easy, and improves work efficiency. Description of the Drawings

[0014] Figure 1 is the front view structural schematic diagram of the present invention; Figure 2 is the top view structural schematic diagram of the present invention; Figure 3 is the right view structural schematic diagram of the present invention; Figure 4 is the left view structural schematic diagram of the present invention; Figure 5 is the left top view three-dimensional structural schematic diagram of the present invention; Figure 6 is of the present invention Figure 5 Enlarged view of A in Figure 7 is the right top view three-dimensional structure schematic diagram of the present invention; Figure 8 is the right view three-dimensional structure schematic diagram of the present invention; Figure 9 is the bottom view three-dimensional structure schematic diagram of the present invention.

[0015] In the figure: 1, frame body; 2, inner box; 3, first wire; 4, second wire; 5, stable foot pad; 6, horizontal cylinder; 7, screw rod; 8, ring handle; 9, conductor extrusion end; 10, inclined plane groove; 11, pointed end part; 12, through hole; 13, front guide groove; 14, vertical plate; 15, ammeter device; 16, horizontal plate; 17, motor; 18, support plate; 19, rotating shaft; 20, gear; 21, guide rail; 22, moving block; 23, meshing teeth; 24, ground inserting rod; 25, limiting plate; 26, side hole; 27, insulating rod; 28, protective layer; 29, spring. Detailed implementation manners

[0016] The present invention will be further described in detail below with reference to the accompanying drawings. It should be noted that all the azimuth terms such as up, down, front, back, left, and right appearing in the present invention do not limit the present invention, but are only used to more clearly illustrate and explain the present invention. Embodiment

[0017] As Figures 1-9 shown, this embodiment discloses a simple type of power cable residual voltage release device, which includes a frame body 1. The frame body 1 has a structure without side walls, and an inner box 2 is fixedly arranged inside the frame body 1. A cable end fixing component is arranged inside the inner box 2; an auxiliary component is arranged at the upper end of the frame body 1, and the auxiliary component is used to facilitate the movement of the frame body 1; the inner bottom surface of the frame body 1 is slidably connected with an ammeter component, and the ammeter component is connected to the fixing component through a first wire 3; a grounding component is arranged at the left end of the frame body 1, and the grounding component is connected to the ammeter component through a second wire 4. A plurality of stable foot pads 5 are arranged at the bottom of the frame body 1. When in use, an operator holds the auxiliary component and moves the frame body 1 into the cable trench. The frame body 1 is placed in the trench. The stable foot pads 5 are used to make the frame body 1 placed stably in the trench. The core of the cable end is inserted into the inner box 2, and the cable end is firmly fixed in the inner box 2 through the fixing component, so that the first wire 3 is electrically connected and conducted with the core inside the cable end. The grounding component is connected to the ground, so that the residual voltage inside the cable is released. The structure is simple, the operation is simple, and the practicability is strong. Embodiment

[0018] As Figures 1-9As shown in the figure, this embodiment discloses a simple power cable residual voltage release device, which includes a frame body 1. The frame body 1 has a structure without side walls. An inner box 2 is fixedly arranged inside the frame body 1, and a cable end fixing component is arranged inside the inner box 2; an auxiliary component is arranged at the upper end of the frame body 1, and the auxiliary component is used to facilitate the movement of the frame body 1; an ammeter component is slidably connected to the inner bottom surface of the frame body 1, and the ammeter component is connected to the fixing component through a first wire 3; a grounding component is arranged at the left end of the frame body 1, and the grounding component is connected to the ammeter component through a second wire 4. A plurality of stable foot pads 5 are arranged at the bottom of the frame body 1. When in use, an operator holds the auxiliary component and moves the frame body 1 into the cable trench. The frame body 1 is placed in the trench. The stable foot pads 5 are used to make the frame body 1 placed stably in the trench. The core of the end of the cable is inserted into the inner box 2, and the end of the cable is firmly fixed in the inner box 2 through the fixing component, so that the first wire 3 is electrically connected and conducted with the core inside the cable end. Through the grounding component connected to the ground, the residual voltage inside the cable is released. The structure is simple, the operation is simple, and the practicability is strong.

[0019] For better effect, the inner box 2 has a right side wall. The fixing component includes a horizontal cylinder 6 fixedly arranged inside the inner box 2. The thickness of the lower side wall of the horizontal cylinder 6 is smaller than that of the upper side wall of the horizontal cylinder 6. A notch is opened on the upper side wall of the horizontal cylinder 6. A screw rod 7 is threadedly connected to the top wall of the inner box 2, and the screw rod 7 is made of insulating material. The upper end of the screw rod 7 penetrates through the top wall of the frame body 1 and extends above the frame body 1. A ring handle 8 is fixedly connected to the upper end of the screw rod 7, and a conductor extrusion end 9 is fixedly arranged at the lower end of the screw rod 7. One end of the first wire 3 is connected to the conductor extrusion end 9. When in use, the end of the cable is inserted into the inside of the horizontal cylinder 6. The lower wall of the horizontal cylinder 6 is set to be thinner, which is convenient for the insertion of the cable end; after the cable end is inserted into the horizontal cylinder 6, the operator holds the ring handle 8 and rotates it. The rotation of the ring handle 8 drives the screw rod 7 to rotate. During the rotation of the screw rod 7, the conductor extrusion end 9 is driven to move downward, so that the conductor extrusion end 9 presses on the core of the cable end, making the core electrically connected and conducted with the conductor extrusion end 9. The residual voltage inside the cable flows into the first wire 3 through the conductor extrusion end 9.

[0020] For better effect, an inclined groove 10 is provided on the inner bottom surface of the frame body 1, and the transverse cylinder 6 is fixedly arranged inside the inclined groove 10; a pointed end portion 11 is fixedly arranged at the lower end of the conductor extrusion end 9, and a wiring terminal is fixedly arranged on the side wall of the conductor pressurization end. A through hole 12 is formed in the top wall of the inner box 2, and the inner end of the first wire 3 is detachably connected to the wiring terminal after passing through the through hole 12. Through the arrangement of the inclined groove 10, it is convenient for the cable end to be smoothly inserted into the transverse cylinder 6. Through the arrangement of the pointed end portion 11, during the process of the screw rod 7 driving the conductor extrusion end 9 to move downward, the pointed end portion 11 can be inserted into the interior of the battery cell, making the connection between the conductor extrusion end 9 and the battery cell more stable.

[0021] For better effect, the ammeter assembly includes a front guide groove 13 and a rear guide groove formed in the inner bottom surface of the frame body 1. A front sliding seat and a rear sliding seat are respectively slidably connected inside the front guide groove 13 and the rear guide groove. Vertical plates 14 are fixedly arranged at the upper ends of the front sliding seat and the rear sliding seat. An ammeter device 15 is fixedly arranged on the left side wall of the vertical plate 14. The right side wall of the vertical plate 14 is fixedly connected to a spring 29, and the other end of the spring 29 is fixedly connected to the left side wall of the inner box 2. The spring 29 is used to stabilize the vertical plate 14 when the vertical plate 14 moves along the front guide groove 13 and the rear guide groove; the outer end of the first wire 3 is connected to the ammeter device 15; the ammeter device 15 is connected to the inner end of the second wire 4. During use, when the screw rod 7 moves downward, the conductor extrusion end 9 moves downward to drive the first wire 3 to move in the through hole 12. The first wire 3 moves into the inner box 2, thereby pulling the vertical plate 14 to move. The vertical plate 14 moves along the front guide groove 13 and the rear guide groove. Through the arrangement of the front sliding seat and the rear sliding seat, the vertical plate 14 does not deviate during the moving process. At the same time, during the movement of the vertical plate 14, the spring 29 is compressed, and the restoring force of the spring 29 offsets part of the pulling force of the first wire 3 on the vertical plate 14, making the movement of the vertical plate 14 slow and stable. The ammeter device 15 is used to display whether there is still residual voltage in the cable, and the result can be directly read. When the ammeter shows zero, it means there is no residual voltage in the cable and safe operation can be carried out.

[0022] For better effect, the grounding assembly includes a transverse plate 16 fixedly connected to the left end of the frame body 1. A motor 17 is fixedly arranged above the transverse plate 16, and a support plate 18 corresponding to the motor 17 is fixedly arranged above the transverse plate 16. Through the arrangement of the support plate 18, it is used to ensure the stability of the rotation process of the rotating shaft 19. The output shaft of the motor 17 is connected to a rotating shaft 19, the other end of the rotating shaft 19 is rotationally matched with the support plate 18, and a gear 20 is fixedly connected to the side wall of the rotating shaft 19. The gear 20 is connected to a grounding component. During use, the motor 17 drives the rotating shaft 19 to rotate, and the rotating shaft 19 drives the gear 20 to rotate synchronously, thereby driving the grounding component to be inserted into the side wall soil of the cable trench, so that the grounding assembly can be easily connected to the ground and release the residual voltage.

[0023] For better effect, the ground inserting assembly includes a guide rail 21 opened on the upper surface of the cross plate 16, and the guide rail 21 extends into the interior of the frame body 1. A moving block 22 is slidably connected inside the guide rail 21. The inner end of the moving block 22 is connected to the outer end of the second wire 4. A meshing tooth 23 is fixedly arranged on the upper surface of the moving block 22, and the meshing tooth 23 is meshed and connected with the gear 20. An earth-inserting rod 24 is fixedly arranged at the outer end of the moving block 22, and a conical part is fixedly arranged at the outer end of the earth-inserting rod 24. During use, the gear 20 of the rotating shaft 19 drives the meshing tooth 23, and then drives the moving block 22 to move in the guide rail 21. When the moving block 22 moves outwards, it drives the earth-inserting rod 24 to penetrate into the side wall soil of the channel. Through the arrangement of the conical part, the earth-inserting rod 24 is more easily inserted into the side wall of the channel. It liberates the hands of the operators, is labor-saving and easy, and improves work efficiency. Embodiment

[0024] As Figures 1-9 shown, this embodiment discloses a simple type of electric cable residual voltage release device, which includes a frame body 1. The frame body 1 has a structure without side walls. An inner box 2 is fixedly arranged inside the frame body 1, and a cable end fixing assembly is arranged inside the inner box 2; an auxiliary assembly is arranged at the upper end of the frame body 1, and the auxiliary assembly is used to facilitate the movement of the frame body 1; an ammeter assembly is slidably connected to the inner bottom surface of the frame body 1, and the ammeter assembly is connected to the fixing assembly through a first wire 3; a grounding assembly is arranged at the left end of the frame body 1, and the grounding assembly is connected to the ammeter assembly through a second wire 4. A plurality of stable foot pads 5 are arranged at the bottom of the frame body 1.

[0025] For better effect, the inner box 2 is a right side wall. The fixing assembly includes a horizontal cylinder 6 fixedly arranged inside the inner box 2. The thickness of the lower side wall of the horizontal cylinder 6 is less than that of the upper side wall of the horizontal cylinder 6. A notch is opened on the upper side wall of the horizontal cylinder 6. A screw rod 7 is threadedly connected to the top wall of the inner box 2, and the screw rod 7 is made of insulating material. The upper end of the screw rod 7 penetrates through the top wall of the frame body 1 and extends above the frame body 1. A ring handle 8 is fixedly connected to the upper end of the screw rod 7. A conductor pressing end 9 is fixedly arranged at the lower end of the screw rod 7, and the conductor pressing end 9 is connected to one end of the first wire 3. During use, the end of the cable is inserted into the interior of the horizontal cylinder 6. The lower wall of the horizontal cylinder 6 is set to be thinner, which is convenient for the insertion of the cable end; after the cable end is inserted into the horizontal cylinder 6, the operator holds the ring handle 8 and rotates. The rotation of the ring handle 8 drives the screw rod 7 to rotate. During the rotation of the screw rod 7, it drives the conductor pressing end 9 to move downwards, so that the conductor pressing end 9 presses above the electric core of the cable end, making the electric core electrically connected and conducting with the conductor pressing end 9. The residual voltage inside the cable flows into the first wire 3 through the conductor pressing end 9.

[0026] For better effect, an inclined groove 10 is provided on the inner bottom surface of the frame body 1, and the horizontal cylinder 6 is fixedly arranged inside the inclined groove 10; a pointed end portion 11 is fixedly arranged at the lower end of the conductor extrusion end 9, and a wiring terminal is fixedly arranged on the side wall of the conductor pressing end. A through hole 12 is formed in the top wall of the inner box 2, and the inner end of the first wire 3 is detachably connected to the wiring terminal after passing through the through hole 12. Through the arrangement of the inclined groove 10, it is convenient for the cable end to be smoothly inserted into the horizontal cylinder 6. Through the arrangement of the pointed end portion 11, during the process of the screw rod 7 driving the conductor extrusion end 9 to move downward, the pointed end portion 11 can be inserted into the interior of the battery cell, making the connection between the conductor extrusion end 9 and the battery cell more stable.

[0027] For better effect, the ammeter assembly includes a front guide groove 13 and a rear guide groove formed in the inner bottom surface of the frame body 1. A front sliding seat and a rear sliding seat are respectively slidably connected inside the front guide groove 13 and the rear guide groove. Vertical plates 14 are fixedly arranged at the upper ends of the front sliding seat and the rear sliding seat. An ammeter device 15 is fixedly arranged on the left side wall of the vertical plate 14, and the right side wall of the vertical plate 14 is fixedly connected to a spring 29. The other end of the spring 29 is fixedly connected to the left side wall of the inner box 2. The spring 29 is used to stabilize the vertical plate 14 when the vertical plate 14 moves along the front guide groove 13 and the rear guide groove; the outer end of the first wire 3 is connected to the ammeter device 15; the ammeter device 15 is connected to the inner end of the second wire 4. During use, when the screw rod 7 moves downward, the conductor extrusion end 9 moves downward to drive the first wire 3 to move in the through hole 12. The first wire 3 moves into the inner box 2, thereby pulling the vertical plate 14 to move. The vertical plate 14 moves along the front guide groove 13 and the rear guide groove. Through the arrangement of the front sliding seat and the rear sliding seat, the vertical plate 14 does not deflect during the moving process. At the same time, during the movement of the vertical plate 14, the spring 29 is compressed, and the restoring force of the spring 29 offsets part of the pulling force of the first wire 3 on the vertical plate 14, making the movement of the vertical plate 14 slow and stable. The ammeter device 15 is used to display whether there is still residual voltage in the cable, and the result can be directly read. When the ammeter shows zero, it means there is no residual voltage in the cable and safe operation can be carried out.

[0028] For better effect, the grounding assembly includes a horizontal plate 16 fixedly connected to the left end of the frame body 1. A motor 17 is fixedly arranged above the horizontal plate 16, and a support plate 18 corresponding to the motor 17 is fixedly arranged above the horizontal plate 16. Through the arrangement of the support plate 18, it is used to ensure the stability of the rotation process of the rotating shaft 19. The output shaft of the motor 17 is connected to a rotating shaft 19, the other end of the rotating shaft 19 is rotatably matched with the support plate 18, and a gear 20 is fixedly connected to the side wall of the rotating shaft 19. The gear 20 is connected to a grounding component. During use, the motor 17 drives the rotating shaft 19 to rotate, and the rotating shaft 19 drives the gear 20 to rotate synchronously, thereby driving the grounding component to be inserted into the side wall soil of the cable trench, so that the grounding assembly can be easily connected to the ground and release the residual voltage.

[0029] For better effect, the ground - piercing assembly includes a guide rail 21 opened on the upper surface of the cross - plate 16, and the guide rail 21 extends into the interior of the frame 1. A moving block 22 is slidably connected inside the guide rail 21. The inner end of the moving block 22 is connected to the outer end of the second wire 4. A meshing tooth 23 is fixedly arranged on the upper surface of the moving block 22, and the meshing tooth 23 is meshed with the gear 20. An earth - inserting rod 24 is fixedly arranged at the outer end of the moving block 22, and a conical part is fixedly arranged at the outer end of the earth - inserting rod 24. During use, the gear 20 of the rotating shaft 19 drives the meshing tooth 23, and then drives the moving block 22 to move in the guide rail 21. When the moving block 22 moves outwards, it drives the earth - inserting rod 24 to pierce into the side - wall soil of the trench. Through the setting of the conical part, the earth - inserting rod 24 is more easily pierced into the side - wall of the trench. It liberates the hands of the operators, is labor - saving and easy, and improves work efficiency.

[0030] For better effect, the auxiliary assembly includes a front extension plate and a rear extension plate fixedly connected to the upper end of the frame 1. An insulating rod 27 is fixedly arranged between the front extension plate and the rear extension plate, and a protective layer 28 is sleeved outside the insulating rod 27. An electric control device is fixedly arranged inside the frame 1. The electric control device includes a battery pack, and the electric control device is connected to the motor 17. The inner end of the moving block 22 is vertically and fixedly connected with a limiting plate 25, and the limiting plate 25 is made of a conductor material. A side hole 26 is opened on the left - hand side wall of the frame 1, and the inner diameter of the side hole 26 is smaller than the diameter of the limiting plate 25. The outer end of the second wire 4 is connected to the limiting plate 25. During use, the motor 17 can be directly externally connected to a socket, or a power source can be fixedly arranged in the inner box 2 inside the frame 1. Through the setting of the limiting plate 25, it is avoided that the earth - inserting rod 24 falls off when the moving block 22 moves outwards excessively.

[0031] The using method of the simple - type electric - power cable residual - voltage release device. During use, the operator holds the auxiliary assembly and moves the frame 1 into the cable trench. The frame 1 is placed in the trench, and the stabilizing foot pad 5 is used to make the frame 1 placed stably in the trench. The exposed core of the end of the cable is inserted into the interior of the inner box 2. The end of the cable is firmly fixed in the inner box 2 through the fixing assembly, and the first wire 3 is electrically connected and conducted with the core inside the cable end. Whether there is voltage inside the cable is displayed through the ammeter assembly, and the residual voltage inside the cable is released through the grounding assembly. The grounding assembly is connected to the ground, and the residual voltage inside the cable is released. The structure is simple, the operation is simple, and the practicability is strong.

[0032] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention should cover within the protection scope of the present invention any equivalent replacement or change made according to the technical solution and concept of the present invention.

Claims

1. A simple residual voltage release device for electric power cables, comprising a frame body, characterized in that: The frame body has a structure without side walls, and an inner box is fixedly arranged inside the frame body. A cable end fixing component is arranged inside the inner box; an auxiliary component is arranged at the upper end of the frame body, and the auxiliary component is used to facilitate the movement of the frame body; the inner bottom surface of the frame body is slidably connected with an ammeter component, and the ammeter component is connected with the fixing component through a first wire; a grounding component is arranged at the left end of the frame body, and the grounding component is connected with the ammeter component through a second wire. A plurality of stable foot pads are arranged at the bottom of the frame body.

2. The simple cable residual voltage release device for electric power according to claim 1, characterized in that: The inner box has a right side wall. The fixing component includes a horizontal cylinder fixedly arranged inside the inner box. The thickness of the lower side wall of the horizontal cylinder is less than that of the upper side wall of the horizontal cylinder. A notch is opened on the upper side wall of the horizontal cylinder. A screw rod is threadedly connected to the top wall of the inner box, and the screw rod is made of insulating material. The upper end of the screw rod penetrates through the top wall of the frame body and extends above the frame body. A ring handle is fixedly connected to the upper end of the screw rod, and a conductor extrusion end is fixedly arranged at the lower end of the screw rod. The conductor extrusion end is connected with one end of the first wire.

3. The simple power cable residual voltage release device according to claim 2, characterized in that: A bevel groove is arranged on the inner bottom surface of the frame body, and the horizontal cylinder is fixedly arranged inside the bevel groove; a pointed end is fixedly arranged at the lower end of the conductor extrusion end, a wiring terminal is fixedly arranged on the side wall of the conductor pressing end, and a through hole is opened on the top wall of the inner box. The inner end of the first wire is detachably connected with the wiring terminal after passing through the through hole.

4. The simple type power cable residual voltage release device according to claim 1, characterized in that: The ammeter component includes a front guide groove and a rear guide groove opened on the inner bottom surface of the frame body. A front sliding seat and a rear sliding seat are respectively slidably connected inside the front guide groove and the rear guide groove. Vertical plates are fixedly arranged at the upper ends of the front sliding seat and the rear sliding seat. An ammeter device is fixedly arranged on the left side wall of the vertical plate, and a spring is fixedly connected to the right side wall of the vertical plate. The other end of the spring is fixedly connected with the left side wall of the inner box. The spring is used to stabilize the vertical plate when the vertical plate moves along the front guide groove and the rear guide groove; the outer end of the first wire is connected with the ammeter device; the ammeter device is connected with the inner end of the second wire.

5. The simple power cable residual voltage release device according to claim 1, characterized in that: The grounding component includes a horizontal plate fixedly connected to the left end of the frame body. A motor is fixedly arranged above the horizontal plate, and a support plate corresponding to the motor is fixedly arranged above the horizontal plate. The output shaft of the motor is connected with a rotating shaft, the other end of the rotating shaft is rotatably matched with the support plate, a gear is fixedly connected to the side wall of the rotating shaft, and the gear is connected with a grounding component.

6. The simple power cable residual voltage release device according to claim 5, characterized in that: The grounding component includes a guide rail opened on the upper surface of the horizontal plate, and the guide rail extends into the frame body. A moving block is slidably connected inside the guide rail. The inner end of the moving block is connected with the outer end of the second wire. A meshing tooth is fixedly arranged on the upper surface of the moving block, and the meshing tooth is meshed and connected with the gear. An earth-inserting rod is fixedly arranged at the outer end of the moving block, and a conical part is fixedly arranged at the outer end of the earth-inserting rod.

7. The simple power cable residual voltage release device according to claim 6, characterized in that: An electric control device is fixedly arranged inside the frame body. The electric control device includes a battery pack, and the electric control device is connected to the motor. A limiting plate is vertically and fixedly connected to the inner end of the moving block, and the limiting plate is made of a conductive material. A side hole is formed in the left side wall of the frame body, and the inner diameter of the side hole is smaller than the diameter of the limiting plate. The outer end of the second wire is connected to the limiting plate.

8. The simple power cable residual voltage release device according to claim 1, characterized in that: The auxiliary component includes a front extension plate and a rear extension plate fixedly connected to the upper end of the frame body. An insulating rod is fixedly arranged between the front extension plate and the rear extension plate, and a protective layer is sleeved outside the insulating rod.

9. A method for using a simple residual voltage release device for electric cables, characterized in that: It includes inserting the exposed core of the end of the cable into the inside of the inner box, fixing the core of the cable end through the fixing component, displaying whether there is voltage inside the cable through the ammeter component, and releasing the residual voltage inside the cable through the grounding component.

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