ground line

Abstract

The application provides a grounding wire, which comprises a wire clamp having a grounding part and a wire connecting part; an insulating operating rod upper end is in driving connection with the wire clamp to drive the wire clamp to switch between a wire clamping state and a wire loosening state; an insulating cover is movably arranged on the wire clamp, when the insulating cover is in a protection state, the insulating cover shields the wire connecting part, and when the insulating cover is in an electricity connection state, the insulating cover exposes the wire connecting part; a charged prevention operating assembly comprises a switching piece, an electromagnetic induction piece and a control piece, the switching piece is arranged between the insulating cover and the wire clamp, the electromagnetic induction piece is arranged on the wire clamp, the control piece is in signal connection with the electromagnetic induction piece and the switching piece respectively, and the control piece controls the switching piece according to the induction result of the electromagnetic induction piece, so that the insulating cover is switched to the protection state. Through the technical scheme provided in the application, the problem that the grounding wire in the related art does not have an intelligent personal safety protection function can be solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety tools, in particular to a grounding wire. BACKGROUND

[0002] From the experience and lessons of power safety accidents in recent decades, the risk of electric shock injury and death of operation and maintenance personnel in the grounding process caused by not checking the electricity before grounding, malfunction of the electricity tester and wrong charged interval still exists, and the safety control situation is severe.

[0003] In the related art, the grounding wire includes a wire clamp, an insulating operating rod, a grounding clamp and a copper wire. The wire clamp is arranged at the upper end of the insulating operating rod, and the two ends of the copper wire are electrically connected with the wire clamp and the grounding clamp respectively. When installing the grounding wire, the operation and maintenance personnel first checks the electricity of the equipment to confirm that the equipment has been de-energized, then connects the grounding clamp with the grounding rod, and finally connects the wire clamp with the equipment wire by operating the insulating operating rod. When removing the grounding wire, the operation and maintenance personnel first checks the electricity of the equipment to confirm that the equipment has been de-energized, then separates the wire clamp from the equipment wire by operating the insulating operating rod, and finally separates the grounding clamp from the grounding rod.

[0004] However, the grounding wire in the related art does not have an intelligent personal safety protection function, so that the safety of the grounding wire completely depends on the working habits of the user. SUMMARY

[0005] The present application provides a grounding wire to solve the problem that the grounding wire in the related art does not have an intelligent personal safety protection function.

[0006] The present application provides a grounding wire, which includes a wire clamp having a wire clamping state and a wire releasing state, the wire clamp having a grounding part and a wire connecting part; an insulating operating rod, the upper end of the insulating operating rod being drivingly connected with the wire clamp to drive the wire clamp to switch between the wire clamping state and the wire releasing state; an insulating cover movably arranged on the wire clamp, the insulating cover having a protection state and an electricity connection state, when the insulating cover is in the protection state, the insulating cover shields the wire connecting part, and when the insulating cover is in the electricity connection state, the insulating cover exposes the wire connecting part; and a charged operation assembly including a switching piece, an electromagnetic induction piece and a control piece, the switching piece being arranged between the insulating cover and the wire clamp, the electromagnetic induction piece being arranged on the wire clamp, and the control piece being signal connected with the electromagnetic induction piece and the switching piece, the control piece controlling the switching piece according to the induction result of the electromagnetic induction piece to switch the insulating cover to the protection state.

[0007] Further, the insulating cover is reversibly arranged on the wire clamp, the switching member comprises: an elastic member arranged between the insulating cover and the wire clamp to apply a reset force to the insulating cover to switch to the protection state; a movable member movably arranged on the wire clamp, the movable member being capable of being connected with the insulating cover when the insulating cover is in the power connection state; and a control member signal connected with the electromagnetic induction member and the movable member, the control member controlling the movable member according to the sensing result of the electromagnetic induction member to separate the movable member from the insulating cover.

[0008] Further, the movable member comprises: a clamping block movably arranged on the wire clamp, the insulating cover having a connecting hook, the connecting hook being capable of being hooked on the clamping block when the insulating cover is in the power connection state, and the connecting hook being capable of being separated from the clamping block when the insulating cover is in the protection state; and a driving member arranged between the clamping block and the wire clamp, the control member being signal connected with the electromagnetic induction member and the driving member, the control member controlling the driving member according to the sensing result of the electromagnetic induction member to drive the clamping block to move and separate the clamping block from the connecting hook.

[0009] Further, the wire clamp comprises: a clamp body having a wire inlet slot, a wire connection part being arranged on an upper slot wall of the wire inlet slot, the insulating cover being movably arranged on the clamp body, the grounding part and the electromagnetic induction member being arranged on the clamp body; and a movable clamp comprising a screw rod and a clamping block arranged on an upper end of the screw rod, the screw rod being coaxially arranged on the upper end of the insulating operating rod, the upper end of the screw rod being arranged through a lower slot wall of the wire inlet slot and extending into the wire inlet slot, the screw rod being threadedly engaged with the clamp body, the clamping block being close to the upper slot wall of the wire inlet slot when the wire clamp is in the wire clamping state, and the clamping block being away from the upper slot wall of the wire inlet slot when the wire clamp is in the wire releasing state; and a force limiting mechanism arranged between the insulating operating rod and the screw rod to limit the relative torque between the insulating operating rod and the screw rod.

[0010] Further, the force limiting mechanism comprises: a driving disc arranged on the upper end of the insulating operating rod, the driving disc being rotationally engaged with the insulating operating rod, the upper end of the driving disc being provided with a force limiting slot extending in the circumferential direction of the insulating operating rod, the bottom wall of the force limiting slot comprising a first force limiting inclined surface and a second force limiting inclined surface connected in sequence in the circumferential direction of the insulating operating rod, the first force limiting inclined surface and the second force limiting inclined surface being arranged at an angle with the axis of the insulating operating rod, the first force limiting inclined surface being gradually inclined upward and the second force limiting inclined surface being gradually inclined downward in the rotation direction of the insulating operating rod driving the clamping block to move upward; a transmission protrusion arranged on the lower end of the screw rod, the transmission protrusion movably extending into the force limiting slot in the circumferential direction of the insulating operating rod, the lower end of the transmission protrusion being provided with a first matching inclined surface and a second matching inclined surface, the first matching inclined surface being in abutment with the first force limiting inclined surface when the wire clamp is in the wire clamping state, and the second matching inclined surface being in abutment with the second force limiting inclined surface when the wire clamp is in the wire releasing state; and a reset member arranged between the driving disc and the insulating operating rod to apply a reset force to the driving disc to move upward relative to the insulating operating rod.

[0011] Further, the angle between the first force limiting slope and the axis of the insulating operating rod is greater than the angle between the second force limiting slope and the axis of the insulating operating rod.

[0012] Further, the driving disc is provided with a rotation stopping protrusion, the insulating operating rod is provided with a rotation stopping slot extending along the axial direction of the insulating operating rod, the rotation stopping protrusion is movably extended into the rotation stopping slot along the extending direction of the rotation stopping slot, and the rotation stopping protrusion and the rotation stopping slot are rotationally matched in the circumferential direction of the insulating operating rod.

[0013] Further, one of the driving disc and the screw rod is provided with a rotation shaft coaxially arranged with the insulating operating rod, and the other of the driving disc and the screw rod is provided with a matching hole into which the rotation shaft is inserted.

[0014] Further, the upper end of the insulating operating rod is provided with a connecting slot, the lower end of the screw rod is extended into the connecting slot, the slot wall of the connecting slot is provided with a first stop platform, the side wall of the screw rod is provided with a second stop platform, the second stop platform is located below the first stop platform, the first stop platform and / or the second stop platform is / are annular structures extending along the circumferential direction of the insulating operating rod, and the force limiting mechanism is located in the connecting slot.

[0015] Further, the grounding wire further comprises a grounding clamp and a conductive wire, two ends of the conductive wire are respectively electrically connected with the grounding clamp and the grounding part; and / or, the anti-electrification operating assembly further comprises an alarm member, the alarm member is arranged at the lower end of the insulating operating rod, the control member is signal connected with the electromagnetic induction member and the alarm member, and the control member controls the alarm member to send an alarm signal according to the induction result of the electromagnetic induction member.

[0016] The technical scheme of the application is applied to the grounding wire which comprises a wire clamp, an insulating operating rod, an insulating cover and an anti-charging operating assembly, the wire clamp has a wire clamping state and a wire loosening state, the wire clamp has a grounding part and a wire connecting part, the insulating cover is switched to a connecting state first, the wire clamp is switched to the wire loosening state, the operation and maintenance personnel move the wire clamp to the vicinity of the equipment wire by using the insulating operating rod, if the induction result of the electromagnetic induction part shows that the equipment wire is charged, the control part controls the switching part to switch the insulating cover to a shielding state, so as to shield the connecting part by using the insulating cover, thereby avoiding that the operation and maintenance personnel misoperate to connect the connecting part with the equipment wire, if the induction result of the electromagnetic induction part shows that the equipment wire is not charged, the insulating cover remains in the connecting state, the connecting part is exposed, and the operation and maintenance personnel can move the wire clamp to the position where the connecting part contacts the equipment wire by using the insulating operating rod, and switch the wire clamp to the wire clamping state by using the insulating operating rod, so that the wire clamp clamps the equipment wire, and the connecting part is stably connected with the equipment wire. Thus, when the wire clamp is moved to the vicinity of the equipment wire, the induction result of the electromagnetic induction part is used to show whether the equipment wire is charged, and the control part controls the switching part according to the induction result of the electromagnetic induction part, so that the switching part is used to switch the insulating cover to the shielding state when the equipment wire is charged, thereby improving the safety guarantee of the grounding wire. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the application, and are incorporated herein for explanatory purposes. The illustrative embodiments of the present application and their description serve the purpose of explanations and are not intended to limit the present application. In the drawings:

[0018] Figure 1 A structural schematic diagram of a grounding wire provided by an embodiment of the present application is shown;

[0019] Figure 2 A top view of a grounding wire provided by an embodiment of the present application is shown, in which an insulating cover is in a connecting state;

[0020] Figure 3 A top view of a grounding wire provided by an embodiment of the present application is shown, in which an insulating cover is in a shielding state;

[0021] Figure 4 A side view of a driving disc and a transmission protrusion of a grounding wire provided by an embodiment of the present application is shown;

[0022] Figure 5 A top view of a driving disc of a grounding wire provided by an embodiment of the present application is shown.

[0023] In the above drawings, the following reference signs are used:

[0024] 10, wire clamp; 11, grounding part; 12, clamp body; 121, wire inlet slot; 13, movable clamp; 131, screw rod; 1311, second stop platform; 132, clamp block;

[0025] 20, insulating operating rod; 21, rotation stop slot; 22, connecting slot; 221, first stop platform;

[0026] 30, insulating cover; 31, connecting hook;

[0027] 40, anti-static operating assembly; 41, switching piece; 411, movable piece; 4111, clamping block; 4112, driving piece; 42, electromagnetic induction piece;

[0028] 50, force limiting mechanism; 51, driving disc; 511, force limiting slot; 5111, first force limiting slope; 5112, second force limiting slope; 512, rotation stop protrusion; 513, rotating shaft; 52, transmission protrusion; 521, first matching slope; 522, second matching slope; 53, reset piece;

[0029] 60, grounding clamp; 70, conductive wire; 80, alarm piece. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work, fall within the scope of protection of the present application.

[0031] As Figures 1 to 5As shown, the embodiment of the present application provides a grounding wire, which comprises a wire clamp 10, an insulated operating rod 20, an insulated cover 30 and a charged prevention operating assembly 40. The wire clamp 10 has a wire clamping state and a wire releasing state, and has a grounding part 11 and a wire connecting part. The upper end of the insulated operating rod 20 is drivingly connected with the wire clamp 10, so as to drive the wire clamp 10 to switch between the wire clamping state and the wire releasing state. The insulated cover 30 is movably arranged on the wire clamp 10, and has a protection state and an electricity connecting state. When the insulated cover 30 is in the protection state, the insulated cover 30 shields the wire connecting part. When the insulated cover 30 is in the electricity connecting state, the insulated cover 30 exposes the wire connecting part. The charged prevention operating assembly 40 comprises a switching piece 41, an electromagnetic induction piece 42 and a control piece. The switching piece 41 is arranged between the insulated cover 30 and the wire clamp 10. The electromagnetic induction piece 42 is arranged on the wire clamp 10. The control piece is signal connected with the electromagnetic induction piece 42 and the switching piece 41 respectively. The control piece controls the switching piece 41 according to the induction result of the electromagnetic induction piece 42, so as to make the insulated cover 30 switch to the protection state.

[0032] The grounding wire provided by the embodiment is used. The grounding wire comprises a wire clamp 10, an insulated operating rod 20, an insulated cover 30 and a charged prevention operating assembly 40. The wire clamp 10 has a wire clamping state and a wire releasing state, and has a grounding part 11 and a wire connecting part. First, the insulated cover 30 is switched to the electricity connecting state, and the wire clamp 10 is switched to the wire releasing state. The operation and maintenance personnel moves the wire clamp 10 to the vicinity of the equipment wire by using the insulated operating rod 20. If the induction result of the electromagnetic induction piece 42 shows that the equipment wire is charged, the control piece controls the switching piece 41 to make the insulated cover 30 switch to the protection state, so as to shield the electricity connecting part by using the insulated cover 30. The insulated cover 30 plays a certain insulation blocking role, avoids or greatly reduces the generation of electric arc, and avoids that the operation and maintenance personnel misoperates to connect the electricity connecting part with the equipment wire. If the induction result of the electromagnetic induction piece 42 shows that the equipment wire is not charged, the insulated cover 30 remains in the electricity connecting state, the electricity connecting part is exposed, and the operation and maintenance personnel can move the wire clamp 10 to the position where the electricity connecting part contacts with the equipment wire by using the insulated operating rod 20, and switch the wire clamp 10 to the wire clamping state by using the insulated operating rod 20. The wire clamp 10 clamps the equipment wire, and the electricity connecting part and the equipment wire are stably connected. Thus, when the wire clamp 10 is moved to the vicinity of the equipment wire, the induction result of the electromagnetic induction piece 42 is used to show whether the equipment wire is charged, and the control piece controls the switching piece 41 according to the induction result of the electromagnetic induction piece 42. When the equipment wire is charged, the insulated cover 30 is switched to the protection state by using the switching piece 41, so as to improve the safety guarantee of the grounding wire.

[0033] In the power operation, the wire clamp 10 clamping the equipment wire means that the wire clamp 10 is used to clamp the line or equipment which needs to be grounded, permitted to be grounded and powered off, to prevent the external power voltage from entering the working range and to avoid the electric shock injury of the worker in the working range.

[0034] Specifically, the remaining exposed surface of the wire clamp 10 except the contact surface contacting the equipment wire is wrapped with an insulating coating.

[0035] When the induction result of the electromagnetic induction piece is greater than or equal to the electromagnetic induction threshold value, the control piece sends a protection signal to the switching piece. In the embodiment, the remote sensing distance of the electromagnetic induction piece 42 to the 10kV voltage is greater than 0.7m, when the voltage of the equipment wire is 10kV, if the distance between the electromagnetic induction piece 42 and the equipment wire is less than or equal to 0.7m, the induction result of the electromagnetic induction piece 42 shows that the equipment wire is charged, the remote sensing distance of the electromagnetic induction piece 42 to the 0.4kV voltage is greater than 0.3m, when the voltage of the equipment wire is 0.4kV, if the distance between the electromagnetic induction piece 42 and the equipment wire is less than or equal to 0.3m, the induction result of the electromagnetic induction piece 42 shows that the equipment wire is charged.

[0036] Specifically, the electromagnetic induction piece 42 comprises an induction coil.

[0037] As shown in Figures 1 to 3 The insulating cover 30 is reversibly arranged on the wire clamp 10, the switching piece 41 comprises a resilient piece and a movable piece 411, the resilient piece is arranged between the insulating cover 30 and the wire clamp 10 to apply a reset force of switching to the protection state to the insulating cover 30, the movable piece 411 is movably arranged on the wire clamp 10, when the insulating cover 30 is in the power connection state, the movable piece 411 can be connected with the insulating cover 30, the control piece is signal connected with the electromagnetic induction piece 42 and the movable piece 411 respectively, the control piece controls the movable piece 411 according to the induction result of the electromagnetic induction piece 42 to make the movable piece 411 separate from the insulating cover 30. The insulating cover 30 is switched to the power connection state first, and the movable piece 411 is connected with the insulating cover 30, so that the insulating cover 30 remains in the power connection state, when the induction result of the electromagnetic induction piece 42 shows that the equipment wire is charged, the control piece controls the movable piece 411 to separate from the insulating cover 30, under the reset force of the resilient piece, the insulating cover 30 is switched to the protection state, if the induction result of the electromagnetic induction piece 42 shows that the equipment wire is not charged, the movable piece 411 remains connected with the insulating cover 30, and the insulating cover 30 remains in the power connection state.

[0038] In the embodiment, the resilient piece comprises a spring, and the two ends of the spring are connected with the insulating cover 30 and the wire clamp 10 respectively.

[0039] As shown in Figures 1 to 3As shown, the movable piece 411 includes a clamping block 4111 and a driving piece 4112, the clamping block 4111 is movably arranged on the wire clamp 10, the insulating cover 30 has a connecting hook 31, when the insulating cover 30 is in the power connection state, the connecting hook 31 can be hooked on the clamping block 4111, when the insulating cover 30 is in the protection state, the connecting hook 31 can be separated from the clamping block 4111, the driving piece 4112 is arranged between the clamping block 4111 and the wire clamp 10, the control piece is signal connected with the electromagnetic induction piece 42 and the driving piece 4112 respectively, the control piece controls the driving piece 4112 according to the induction result of the electromagnetic induction piece 42, so that the driving piece 4112 drives the clamping block 4111 to move and separates the clamping block 4111 from the connecting hook 31.

[0040] As shown, Figure 1 As shown, the wire clamp 10 includes a clamp body 12 and a movable clamp 13, the clamp body 12 has a wire inlet slot 121, the wire connecting part is arranged on the upper slot wall of the wire inlet slot 121, the insulating cover 30 is movably arranged on the clamp body 12, the grounding part 11 and the electromagnetic induction piece 42 are arranged on the clamp body 12, the movable clamp 13 includes a screw rod 131 and a clamping block 132 arranged on the upper end of the screw rod 131, the screw rod 131 is coaxially arranged on the upper end of the insulating operating rod 20, the upper end of the screw rod 131 is arranged through the lower slot wall of the wire inlet slot 121 and extends into the wire inlet slot 121, the screw rod 131 is threadedly matched with the clamp body 12, when the wire clamp 10 is in the wire clamping state, the clamping block 132 is close to the upper slot wall of the wire inlet slot 121, when the wire clamp 10 is in the wire loosening state, the clamping block 132 is away from the upper slot wall of the wire inlet slot 121, wherein the grounding wire further includes a force limiting mechanism 50 arranged between the insulating operating rod 20 and the screw rod 131, to limit the relative torque between the insulating operating rod 20 and the screw rod 131. By adopting the force limiting mechanism 50, when the staff applies torque to the screw rod 131 through the insulating operating rod 20, the insulating operating rod 20 is rotated, when the torque borne by the insulating operating rod 20 is greater than or equal to the set value of the force limiting mechanism 50, the insulating operating rod 20 drives the screw rod 131 to rotate through the force limiting mechanism 50, so that the torque applied by the staff with different hand feelings when clamping the grounding wire is greater than or equal to the set value of the force limiting mechanism 50, avoiding that the staff with different hand feelings has loose clamping effect on the grounding wire, avoiding that the grounding wire is easily loosened, and avoiding that safety problems are caused.

[0041] It should be noted that, when the wire clamp 10 is in the wire clamping state, the clamping block 132 is close to the upper slot wall of the wire inlet slot 121, when the wire clamp 10 is in the wire loosening state, the clamping block 132 is away from the upper slot wall of the wire inlet slot 121, which means that the distance between the clamping block 132 and the upper slot wall of the wire inlet slot 121 when the wire clamp 10 is in the wire clamping state is less than the distance between the clamping block 132 and the upper slot wall of the wire inlet slot 121 when the wire clamp 10 is in the wire loosening state.

[0042] AsFigure 1 、 Figure 4 and Figure 5 As shown in the figure, the force limiting mechanism 50 comprises a driving disc 51, a transmission protrusion 52 and a reset member 53. The driving disc 51 is arranged at the upper end of the insulated operating rod 20 and is rotationally fixed to the insulated operating rod 20. The upper end of the driving disc 51 is provided with a force limiting groove 511 extending in the circumferential direction of the insulated operating rod 20. The bottom wall of the force limiting groove 511 comprises a first force limiting slope 5111 and a second force limiting slope 5112 connected in sequence in the circumferential direction of the insulated operating rod 20. Both the first force limiting slope 5111 and the second force limiting slope 5112 are arranged at an angle with the axis of the insulated operating rod 20. In the rotation direction of the insulated operating rod 20 driving the upward movement of the clamping block 132, the first force limiting slope 5111 gradually inclines upward, and the second force limiting slope 5112 gradually inclines downward. The transmission protrusion 52 is arranged at the lower end of the screw rod 131 and movably extends into the force limiting groove 511 in the circumferential direction of the insulated operating rod 20. The lower end of the transmission protrusion 52 is provided with a first matching slope 521 and a second matching slope 522. When the wire clamp 10 is in the wire clamping state, the first matching slope 521 is in contact with the first force limiting slope 5111. When the wire clamp 10 is in the wire releasing state, the second matching slope 522 is in contact with the second force limiting slope 5112. The reset member 53 is arranged between the driving disc 51 and the insulated operating rod 20 to apply a reset force to the driving disc 51 for moving upward relative to the insulated operating rod 20.

[0043] Specifically, when rotating the insulated operating rod 20 to switch the wire clamp 10 from the wire releasing state to the wire clamping state, when the torque borne by the insulated operating rod 20 is greater than or equal to a first set value defined by the second matching slope 522 in contact with the second force limiting slope 5112, the second matching slope 522 slides relative to the second force limiting slope 5112, the transmission protrusion 52 moves to the end of the force limiting groove 511 close to the first force limiting slope 5111, a "click" sound and vibration feeling are generated (a vibration sensor is arranged at the lower end of the insulated operating rod 20, and the vibration sensor works when the transmission protrusion 52 moves to the end of the force limiting groove 511), warning that the torque has reached greater than the first set value, and the insulated operating rod 20 can continue to be rotated to drive the rotation of the screw rod 131. This process will not be affected by the torque threshold.

[0044] Specifically, when the torque received by the insulating operating rod 20 is greater than or equal to the second set value defined by the abutment of the first matching slope 521 and the first force limiting slope 5111 when the wire clamp 10 is switched from the clamping state to the loosening state, the first matching slope 521 slides relative to the first force limiting slope 5111, the transmission protrusion 52 moves to the end of the force limiting groove 511 close to the second force limiting slope 5112, a "click" sound and vibration feeling are generated (a vibration sensor is arranged at the lower end of the insulating operating rod 20, and the vibration sensor works when the transmission protrusion 52 moves to the end of the force limiting groove 511), which warns that the torque has reached greater than the second set value, and the insulating operating rod 20 can continue to be rotated to drive the screw rod 131 to rotate, and this process will not be affected by the torque threshold.

[0045] As shown in Figure 4 , the included angle between the first force limiting slope 5111 and the axis of the insulating operating rod 20 is greater than the included angle between the second force limiting slope 5112 and the axis of the insulating operating rod 20, and the first set value defined by the abutment of the second matching slope 522 and the second force limiting slope 5112 is greater than the second set value defined by the abutment of the first matching slope 521 and the first force limiting slope 5111.

[0046] As shown in Figure 1 , the driving disc 51 is provided with a rotation stopping protrusion 512, and the insulating operating rod 20 is provided with a rotation stopping groove 21 extending in the axial direction of the insulating operating rod 20, the rotation stopping protrusion 512 movably extends into the rotation stopping groove 21 along the extension direction of the rotation stopping groove 21, and the rotation stopping protrusion 512 and the rotation stopping groove 21 are rotationally matched in the circumferential direction of the insulating operating rod 20. By using the rotation stopping groove 21 and the rotation stopping protrusion 512, the floating of the driving disc 51 relative to the insulating operating rod 20 in the axial direction of the insulating operating rod 20 is guided, and the rotation stopping groove 21 and the rotation stopping protrusion 512 are rotationally matched in the circumferential direction of the insulating operating rod 20, so that when the insulating operating rod 20 is rotated, the driving disc 51 can be driven to rotate synchronously, and the floating of the driving disc 51 relative to the insulating operating rod 20 in the axial direction of the insulating operating rod 20 is not affected.

[0047] As shown in Figure 1 , one of the driving disc 51 and the screw rod 131 is provided with a rotating shaft 513 coaxially arranged with the insulating operating rod 20, and the other of the driving disc 51 and the screw rod 131 is provided with a matching hole for the rotating shaft 513 to insert. The rotating shaft 513 movably extends into the matching hole around its axis to provide a reliable rotation axis for the relative rotation between the driving disc 51 and the screw rod 131.

[0048] As shown in Figure 1As shown, the upper end of the insulating operating rod 20 is provided with a connecting groove 22, the lower end of the screw rod 131 extends into the connecting groove 22, the groove wall of the connecting groove 22 is provided with a first stop table 221, the sidewall of the screw rod 131 is provided with a second stop table 1311, the second stop table 1311 is below the first stop table 221, the first stop table 221 and / or the second stop table 1311 is an annular structure extending along the circumference of the insulating operating rod 20, and the force limiting mechanism 50 is located in the connecting groove 22. By the stop cooperation between the second stop table 1311 and the first stop table 221, the lower end of the screw rod 131 is prevented from being pulled out of the connecting groove 22.

[0049] As shown in the drawings, Figure 1 The grounding wire also includes a grounding clamp 60 and a conductive wire 70, and the two ends of the conductive wire 70 are electrically connected with the grounding clamp 60 and the grounding part 11 respectively. In power operation, the grounding clamp 60 is used to clamp the grounding rod to guide the external power voltage on the wire clamp 10 to the ground to prevent the operator from being electrocuted.

[0050] In this embodiment, the conductive wire 70 is a copper wire.

[0051] In addition, the grounding clamp 60 has a communication part which is signal connected with the grounding clamp 60 and the switching part 41. When the grounding clamp 60 is not connected with the grounding rod, the communication part sends a control signal to the switching part 41 to make the insulating protective cover 30 switch to the protection state. At this time, the grounding wire cannot perform grounding operation, thereby avoiding the illegal behavior of “first installing the wire end and then installing the grounding end”. When the insulating protective cover 30 is in the protection state, the communication part sends a non-removable control signal to the grounding clamp 60. At this time, the grounding clamp 60 cannot perform the operation of loosening the grounding rod. When the insulating protective cover 30 is in the power connection state, the communication part sends a removable control signal to the grounding clamp 60. At this time, the grounding clamp 60 can perform the operation of loosening the grounding rod, thereby avoiding the illegal behavior of “first removing the grounding end and then removing the wire end” and improving the safety guarantee of the grounding wire.

[0052] In this embodiment, the insulating operating rod 20 is entirely insulated, so that the operator has sufficient safety distance from the line equipment when grounding operation is performed. An insulating handle is arranged at the lower end of the insulating operating rod 20 to prevent the operator from being electrocuted. In addition, a warning word “first check the power and then ground!” is printed on the insulating operating rod 20.

[0053] As shown in the drawings, Figure 1As shown, the anti-charging operation assembly 40 further comprises an alarm member 80 arranged at the lower end of the insulating operation rod 20, the control member is in signal connection with the electromagnetic induction member 42 and the alarm member 80 respectively, and the control member controls the alarm member 80 to send an alarm signal according to the induction result of the electromagnetic induction member 42. If the induction result of the electromagnetic induction member 42 shows that the equipment conductor is electrified, the control member controls the alarm member 80 to send an alarm signal, warning the operator to stop operating immediately. Specifically, the alarm member 80 comprises a vibration sensor, a flash lamp, a buzzer and a battery.

[0054] The technical solution provided by the embodiment can be used in the following operation mode:

[0055] (1) When the operator installs the grounding wire, the operator uses the electroscope to test the voltage of the line equipment, and develops the grounding wire installation work after testing that there is no voltage. The operator connects the grounding clamp 60 with the grounding rod, and after the installation is completed, presses the switch of the grounding clamp 60, switches the insulating protective cover 30 to the electrified state, switches the conductor clamp 10 to the wire loosening state, and switches the conductor clamp 10 to the wire loosening state. The maintenance personnel moves the conductor clamp 10 to the vicinity of the equipment conductor by using the insulating operation rod 20. If the induction result of the electromagnetic induction member 42 shows that the equipment conductor is electrified, the control member controls the switching member 41 to switch the insulating protective cover 30 to the protective state, so as to shield the electrified part by using the insulating protective cover 30, avoiding that the maintenance personnel misoperates to connect the electrified part with the equipment conductor. If the induction result of the electromagnetic induction member 42 shows that the equipment conductor is not electrified, the insulating protective cover 30 remains in the electrified state, the electrified part is exposed, and the maintenance personnel can move the conductor clamp 10 to the position where the electrified part contacts the equipment conductor by using the insulating operation rod 20, and switch the conductor clamp 10 to the wire clamping state by using the insulating operation rod 20, so as to clamp the equipment conductor by the conductor clamp 10, and stably connect the electrified part and the equipment conductor;

[0056] (2) After the operator has completed the installation of the grounding wire, the grounding wire suddenly loosens due to non-human reasons, or other personnel arbitrarily remove the grounding wire, the alarm member 80 acts, reminding the on-site operator to recheck the grounding wire installation situation;

[0057] (3) Before the operator removes the grounding wire, the grounding line equipment is energized, causing the switching component 41 to switch the insulating cover 30 to the protective state. When the operator removes the grounding wire, when the torque on the insulating operating rod 20 is greater than or equal to the second set value defined by the first mating inclined surface 521 and the first force limiting inclined surface 5111, the first mating inclined surface 521 and the first force limiting inclined surface 5111 slide relative to each other, and the transmission protrusion 52 moves to the end of the force limiting groove 5111 near the second force limiting inclined surface 5112, making a "click" sound and vibration feeling (a vibration sensor is provided at the lower end of the insulating operating rod 20, and the vibration sensor works when the transmission protrusion 52 moves to the end of the force limiting groove 511), indicating that the torque has reached a value greater than the second set value, and the operator can continue to rotate the insulating operating rod 20 and drive the screw 131 to rotate. The operator manually switches the insulating cover 30 to the energized state, so that the grounding clamp 60 receives the detachable signal, and the operator removes the grounding clamp 60.

[0058] The technical solution provided in this embodiment has the following advantages:

[0059] (1) From the perspective of intrinsic safety design, the existing medium and low voltage grounding wires are transformed and innovated to detect whether the grounding line equipment is energized without contact. When the grounding line equipment is energized, it can alarm and prevent the grounding operation, thus preventing the malicious violation of "grounding before testing for voltage" from the root.

[0060] (2) A combination of an electromagnetic sensor and a voltage tester is used to form a dual voltage testing safety protection;

[0061] (3) In extreme cases (the contact voltage detector fails or the operator forgets to perform the voltage detection operation, and the line equipment is energized), it can issue a "life-saving" warning signal at the critical moment when it is close to grounding, alert the operator and prevent the grounding operation;

[0062] (4) In the design, the dangerous behavior of “installing the conductor end first and then the grounding end” during grounding and the dangerous behavior of “removing the grounding end first and then the conductor end” during removal should be eliminated.

[0063] (5) The force limiting mechanism 50 helps the operator to determine whether the wire clamp 10 is installed firmly through sound and vibration, so as to avoid problems such as loose grounding wire and poor connection between grounding wire and line equipment.

[0064] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples herein are not intended to limit the scope of the application unless specifically so stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown therein are for the purpose of illustration and do not present a limitation of the application. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered within the scope of the description. In all examples shown and discussed herein, any specific values are to be interpreted as illustrative only and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It is to be noted that like numbers and letters refer to like elements throughout the several views of the drawings and that one or more specific embodiments thereof can be shown in the drawings and described herein by way of illustration and not by way of limitation.

[0066] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by orientation words such as "front, back, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal", and "top, bottom" and the like are generally based on the orientation or positional relationships shown in the drawings, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0067] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper", and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0068] In addition, it should be noted that the use of the words "first", "second", and the like to describe various components is merely intended to distinguish the respective components from each other, and the words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the present application.

[0069] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. The present application can have various changes and modifications for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ground line, characterized in that The grounding wire comprises: A wire clamp (10) having a wire clamping state and a wire loosening state, the wire clamp (10) having a grounding part (11) and a wire connecting part; An insulated operating rod (20), an upper end of the insulated operating rod (20) being drivingly connected with the wire clamp (10) to drive the wire clamp (10) to switch between the wire clamping state and the wire loosening state; An insulated protective cover (30) movably arranged on the wire clamp (10), the insulated protective cover (30) having a protection state and an electricity connecting state, when the insulated protective cover (30) is in the protection state, the insulated protective cover (30) shields the wire connecting part, when the insulated protective cover (30) is in the electricity connecting state, the insulated protective cover (30) exposes the wire connecting part; A live wire operation assembly (40) comprising a switching piece (41), an electromagnetic induction piece (42) and a control piece, the switching piece (41) being arranged between the insulated protective cover (30) and the wire clamp (10), the electromagnetic induction piece (42) being arranged on the wire clamp (10), the control piece being signal connected with the electromagnetic induction piece (42) and the switching piece (41) respectively, the control piece controlling the switching piece (41) according to the induction result of the electromagnetic induction piece (42) to make the insulated protective cover (30) switch to the protection state: The insulated protective cover (30) is reversibly arranged on the wire clamp (10), the switching piece (41) comprises: A resilient piece arranged between the insulated protective cover (30) and the wire clamp (10) to apply a reset force to the insulated protective cover (30) to switch to the protection state; A movable piece (411) movably arranged on the wire clamp (10), when the insulated protective cover (30) is in the electricity connecting state, the movable piece (411) can be connected with the insulated protective cover (30), the control piece being signal connected with the electromagnetic induction piece (42) and the movable piece (411) respectively, the control piece controlling the movable piece (411) according to the induction result of the electromagnetic induction piece (42) to make the movable piece (411) separate from the insulated protective cover (30): The movable piece (411) comprises: A clamping block (4111) movably arranged on the wire clamp (10), the insulated protective cover (30) having a connecting hook (31), when the insulated protective cover (30) is in the electricity connecting state, the connecting hook (31) can be hooked on the clamping block (4111), when the insulated protective cover (30) is in the protection state, the connecting hook (31) can separate from the clamping block (4111). A driving member (4112) is arranged between the clamping block (4111) and the wire clamp (10), the control member is signal connected with the electromagnetic induction member (42) and the driving member (4112) respectively, the control member controls the driving member (4112) according to the induction result of the electromagnetic induction member (42), so that the driving member (4112) drives the clamping block (4111) to move and separates the clamping block (4111) from the connecting hook (31).

2. The ground line of claim 1, wherein, The wire clamp (10) comprises: A clamp body (12) having a wire inlet slot (121), the wire connecting part is arranged on the upper slot wall of the wire inlet slot (121), the insulating cover (30) is movably arranged on the clamp body (12), the grounding part (11) and the electromagnetic induction member (42) are arranged on the clamp body (12); A movable clamp (13) comprising a screw rod (131) and a clamping block (132) arranged on the upper end of the screw rod (131), the screw rod (131) is coaxially arranged on the upper end of the insulating operating rod (20), the upper end of the screw rod (131) penetrates the lower slot wall of the wire inlet slot (121) and extends into the wire inlet slot (121), the screw rod (131) is threadedly connected with the clamp body (12), when the wire clamp (10) is in the wire clamping state, the clamping block (132) is close to the upper slot wall of the wire inlet slot (121), when the wire clamp (10) is in the wire loosening state, the clamping block (132) is away from the upper slot wall of the wire inlet slot (121); The grounding wire further comprises a force limiting mechanism (50) arranged between the insulating operating rod (20) and the screw rod (131), so as to limit the relative torque between the insulating operating rod (20) and the screw rod (131).

3. The ground line of claim 2, wherein, The force limiting mechanism (50) comprises: A driving disc (51) arranged on the upper end of the insulating operating rod (20), the driving disc (51) is rotationally connected with the insulating operating rod (20), the upper end of the driving disc (51) is provided with a force limiting slot (511) extending in the circumferential direction of the insulating operating rod (20), the bottom wall of the force limiting slot (511) comprises a first force limiting inclined surface (5111) and a second force limiting inclined surface (5112) connected in sequence in the circumferential direction of the insulating operating rod (20), the first force limiting inclined surface (5111) and the second force limiting inclined surface (5112) are arranged at an angle with the axis of the insulating operating rod (20), in the rotation direction of the insulating operating rod (20) driving the clamping block (132) to move upward, the first force limiting inclined surface (5111) gradually inclines upward, and the second force limiting inclined surface (5112) gradually inclines downward; A transmission protrusion (52) is arranged at the lower end of the screw rod (131), and the transmission protrusion (52) movably extends into the force limiting groove (511) in the circumferential direction of the insulating operating rod (20). The lower end of the transmission protrusion (52) is provided with a first matching inclined surface (521) and a second matching inclined surface (522). When the wire clamp (10) is in the wire clamping state, the first matching inclined surface (521) is in contact with the first force limiting inclined surface (5111). When the wire clamp (10) is in the wire loosening state, the second matching inclined surface (522) is in contact with the second force limiting inclined surface (5112). A reset member (53) is arranged between the driving disc (51) and the insulating operating rod (20) to apply a reset force to the driving disc (51) for upward movement relative to the insulating operating rod (20).

4. The ground line of claim 3, wherein, The included angle between the first force limiting inclined surface (5111) and the axis of the insulating operating rod (20) is greater than the included angle between the second force limiting inclined surface (5112) and the axis of the insulating operating rod (20).

5. The ground line of claim 3, wherein, A rotation stopping protrusion (512) is arranged on the driving disc (51), and a rotation stopping groove (21) extending in the axial direction of the insulating operating rod (20) is arranged on the insulating operating rod (20). The rotation stopping protrusion (512) movably extends into the rotation stopping groove (21) in the extension direction of the rotation stopping groove (21). The rotation stopping protrusion (512) and the rotation stopping groove (21) are rotationally matched in the circumferential direction of the insulating operating rod (20).

6. The ground line of claim 3, wherein, One of the driving disc (51) and the screw rod (131) is provided with a rotating shaft (513) coaxially arranged with the insulating operating rod (20), and the other of the driving disc (51) and the screw rod (131) is provided with a matching hole for inserting the rotating shaft (513).

7. The ground line of claim 4, wherein, The upper end of the insulating operating rod (20) is provided with a connecting groove (22), and the lower end of the screw rod (131) extends into the connecting groove (22). A first stop table (221) is arranged on the groove wall of the connecting groove (22), and a second stop table (1311) is arranged on the side wall of the screw rod (131). The second stop table (1311) is located below the first stop table (221). The first stop table (221) and / or the second stop table (1311) are annular structures extending in the circumferential direction of the insulating operating rod (20). The force limiting mechanism (50) is located in the connecting groove (22).

8. The grounding wire according to claim 1, wherein The grounding wire further comprises a grounding clamp (60) and a conductive wire (70), and two ends of the conductive wire (70) are electrically connected with the grounding clamp (60) and the grounding part (11), respectively; and / or, The anti-static operation assembly (40) further comprises an alarm member (80) arranged at the lower end of the insulating operation rod (20), and the control member is in signal connection with the electromagnetic induction member (42) and the alarm member (80) respectively, and the control member controls the alarm member (80) to send an alarm signal according to the induction result of the electromagnetic induction member (42).

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