CN213878480U

CN213878480U - Short-circuit protection device for grounding wire

Info

Publication number: CN213878480U
Application number: CN202022900405.4U
Authority: CN
Inventors: 罗玉娟
Original assignee: Sichuan Xingji Power Equipment Co ltd
Current assignee: Sichuan Xingji Power Equipment Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-08-03
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses a short-circuit protection device for earth connection, include: the hook comprises a hook body, a connecting part and a U-shaped hook part extending from the connecting part; the concave surface of the hook part is symmetrically provided with two accommodating grooves, telescopic arc-shaped clamping pieces are arranged in the two accommodating grooves, the two arc-shaped clamping pieces are arranged oppositely and form a clamping hole with the concave surface of the hook part, and the two arc-shaped clamping pieces can lock a cable penetrating through the clamping hole in an extending state; the sensing piece comprises a sensing sleeve detachably sleeved on the hook main body and a sensor arranged at the position of a clamping hole on the sensing sleeve; the sensor outputs a sensing signal when sensing that the cable penetrates through the clamping hole. This short-circuit protection device locks the cable through the centre gripping hole that two arc clamping pieces and hook portion's concave surface formed, prevents that the cable from deviating from, guarantees the electrically conductive stability of couple main part, and the sensor sends the inductive signal and guides the operation personnel to judge the electrically conductive situation of couple main part, avoids electrocuteeing, ensures operation personnel's personal safety.

Description

Short-circuit protection device for grounding wire

Technical Field

The utility model relates to a power equipment technical field specifically relates to a short-circuit protection device for earth connection that uses in electric power system overhauls.

Background

In outdoor electric power maintenance operation, for operation personnel's personal safety, need the circular telegram of disconnection maintenance circuit, later articulate the ground wire at the both ends of maintenance cable, prevent that operation personnel from causing bodily injury because of sudden power transmission or induction electricity when overhauing the operation, articulate the electrically conductive couple with the ground wire intercommunication on the maintenance cable usually, the electric current or the induction electricity of passing through the cable suddenly when will overhauing the operation through electrically conductive couple releases through the leading-in underground of ground wire, consequently, in the maintenance operation of power line, electrically conductive couple needs firm articulate on the cable.

Among the prior art, conductive hook articulates on the cable after, and operating personnel check whether conductive hook articulates firmly, later begins to overhaul the operation, but because the working error causes conductive hook not hard up, articulates insecure, and operating personnel easily causes the electric shock accident when follow-up maintenance operation, endangers operating personnel's personal safety, consequently, urgent need a device can be firm articulate on the cable, the safety problem when ensureing that operating personnel overhauls the circuit.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a short-circuit protection device for earth connection to hang insecure and make the electrically conductive unstable technical problem of electrically conductive couple because of electrically conductive couple among the solution prior art.

In order to achieve the above object, the utility model provides a articulate on high-voltage cable when being used for power line to overhaul for a short-circuit protection device of earth connection, a short-circuit protection device for earth connection includes: the couple main part includes: a connecting part and a U-shaped hook part extending from the connecting part; the concave surface of the hook part is symmetrically provided with two accommodating grooves, telescopic arc-shaped clamping pieces are arranged in the two accommodating grooves, the two arc-shaped clamping pieces are arranged oppositely and form a clamping hole with the concave surface of the hook part, and the two arc-shaped clamping pieces can lock a cable penetrating through the clamping hole in a completely extending state; a sensing element, comprising: the sensing sleeve is detachably sleeved on the hook main body, and the sensor is arranged on the sensing sleeve and positioned at the top of the arc bottom of the hook main body; the sensor outputs a sensing signal when sensing that the cable penetrates through the clamping hole.

Specifically, the short-circuit protection device for a ground line further includes: the operating rod is connected with the connecting part, and the wireless transceiver is arranged on the rod body of the operating rod;

the wireless transceiver is connected with the sensor through a wire and used for outputting corresponding sensing information according to the sensing signal.

Specifically, a conductor groove is formed in the contact surface of the induction sleeve and the hook part, and the conductor is arranged in the conductor groove.

Specifically, the short-circuit protection device for the grounding wire further comprises a protective cover, wherein the protective cover is installed on the rod body of the operating rod and used for covering the wireless transceiver.

Specifically, the short-circuit protection device for the grounding wire further comprises a positioner, and the positioner is installed in the protective cover.

Specifically, the short-circuit protection device for the grounding wire further comprises two return springs mounted in the corresponding accommodating grooves, and the arc-shaped clamping pieces can be switched between a fully extended state and a retracted state through the corresponding return springs.

Specifically, each of the arcuate clips is in conductive communication with the hook body.

Specifically, the connecting portion is further provided with a conductive column.

Specifically, the short-circuit protection device for the grounding wire further comprises a handle sleeve, and the handle sleeve is sleeved at the handheld end of the operating rod.

In particular, the induction sleeve is made of an insulating material.

The utility model provides a short-circuit protection device for earth connection, the holding tank is seted up in the concave surface of "U" shape couple portion of couple main part symmetrically, through installing the cable that the centre gripping hole locking that arc clamping piece and the concave surface of couple portion formed in each holding tank was worn to locate wherein, the elastic force that two arc clamping pieces produced can be fixed the cable locking in the centre gripping hole, ensure that the couple main part firmly articulates and can not deviate from the centre gripping hole, short-circuit protection device for earth connection still need to lead in the electric current of sudden power transmission or induced electricity to the underground through the earth connection, therefore, the cable needs firm locking in the centre gripping hole, thereby ensure that the electric current can be stable transmit for the earth connection through the couple main part, in order to master the locking situation of cable in the centre gripping hole in real time, suit the response cover in the couple portion of couple main part, the sensor is installed on the response cover, through the cable that the sensor response wears to locate in the centre gripping hole, and the sensing signal is output under the condition that the cable is locked in the clamping hole by sensing, so that an operator can conveniently know the locking condition of the cable in real time according to the sensing signal, the conductive stability of the hook main body is judged, and the current or the sensing electricity can be led into the ground through the hook main body and the ground wire to be released under the condition that the current or the sensing electricity which is suddenly transmitted flows through the cable, so that the personal safety of the operator who performs circuit maintenance is ensured.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a front view of a short circuit protection device for a ground wire according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a short-circuit protection device for a ground wire according to an embodiment of the present invention;

fig. 3 is a schematic perspective view of an induction sleeve in the short-circuit protection device for a ground wire of fig. 1;

fig. 4 is a sectional view of a hook body in the short protection device for a ground line of fig. 1.

Description of the reference numerals

1 hook body 2 inductor

3 arc clamping piece 4 operating rod

5 protective cover 6 handle sleeve

11 connecting part 12 hook part

13 accommodating groove 14 clamping hole

15 conductive column 21 induction sleeve

22 sensor 211 lead slot

31 rotating shaft 32 torsion spring

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

In order to better understand the technical solution of the present invention, first, a short-circuit protection device for a ground wire is described with reference to fig. 1 and 2. As shown in fig. 1 and 2, a short-circuit protection device for a ground wire, which is used for being hung on a high-voltage cable during power line maintenance, comprises: hook body 1, includes: a connecting part 11 and a U-shaped hook part 12 extending from the connecting part 11; the concave surface of the hook part 12 is symmetrically provided with two accommodating grooves 13, the two accommodating grooves 13 are internally provided with telescopic arc-shaped clamping pieces 3, the two arc-shaped clamping pieces 3 are oppositely arranged and form a clamping hole 14 with the concave surface of the hook part 12, and the two arc-shaped clamping pieces 3 can lock a cable penetrating through the clamping hole 14 in a completely extended state; the sensing member 2 includes: the hook comprises an induction sleeve 21 detachably sleeved on the hook main body 1 and a sensor 22 arranged on the induction sleeve 21 and positioned at the top of the arc bottom of the hook main body 1; the sensor 22 outputs a sensing signal when sensing that the cable is inserted into the holding hole 14.

The utility model provides a short-circuit protection device for earth connection, with the earth connection, the operating personnel articulates "U" shape couple portion 12 of couple main part 1 on high-voltage cable when carrying out the power line maintenance, in order to ensure that the cable can not deviate from couple portion 12 and articulate firmly, as shown in figure 4, set up holding tank 13 at the concave surface symmetry of couple portion 12, install an arc clamping piece 3 in each holding tank 13, this arc clamping piece 3 is the elasticity clamping piece, as shown in figure 1 and figure 4, two arc clamping pieces 3 and the concave surface of couple portion 12 form clamping hole 14, when couple main part 1 articulates on the cable, the cable slides into clamping hole 14 from the convex surface between two arc clamping pieces 3 gradually, two arc clamping pieces 3 shrink and bounce in the process that the cable slides into clamping hole 14, after the cable enters into clamping hole 14, under the elastic force effect of arc clamping piece 3, the convex surfaces of the two arc-shaped clamping pieces 3 are gradually closed and restored to the completely extending state, so that the cable sliding into the clamping hole 14 is locked in the clamping hole 14, the cable is prevented from being separated from the clamping hole 14, the hook main body 1 is ensured to be firmly hung on the cable, the conductive stability of the hook main body 1 is ensured, even if the current or the induced current which is suddenly supplied flows through the cable, the current which flows through the hook main body 1 and the arc-shaped clamping pieces 3 which are contacted with the cable can be guided into the ground through the grounding wire for releasing, the electric shock accident of an operator is prevented, in order to monitor whether the hook main body 1 is firmly hung on the cable in real time and further ensure the personal safety of the operator, the hook part 12 of the hook main body 1 is sleeved with the induction sleeve 21, the induction sleeve 21 is made of an insulating material, the induction sleeve 21 is provided with a sensor 22, for example, the sensor 22 is a pressure sensor, as shown in figure 1, sensor 22 installs at the arc bottom top that is located "U" shape couple main part 1, sensor 22's inductive head sets up towards the radial direction of centre gripping hole 14 and stretches into given distance along the radial direction of centre gripping hole 14 towards centre gripping hole 14 in, given distance sets up according to sensor 22's inductive distance, the cable is pasted tightly towards the concave surface of couple portion 12 under the effect of the elastic force of two arc clamping pieces 3 after slipping into centre gripping hole 14, thereby contact with sensor 22's inductive head under the concave surface of couple portion 12 is pasted tightly to the cable and trigger sensor 22 sends the sensing signal, the operation personnel determine the locking condition of cable in couple portion 12 of couple main part 1 according to the sensing signal thereby judge couple main part 1 electrically conductive stable, and then guide operation personnel's safe operation, ensure operation personnel's personal safety, avoid the emergence of personal injury.

In order to facilitate the worker to hang the hook body 1 on the cable, specifically, the short-circuit protection device for the ground wire further includes: the operating rod 4 is connected with the connecting part 11, and the wireless transceiver is arranged on the rod body of the operating rod 4; the wireless transceiver is connected with the sensor 22 through a wire, and the wireless transceiver is used for outputting corresponding sensing information according to the sensing signal.

As shown in fig. 1 and 2, the operating lever 4 is attached to the connecting portion 11 of the hook body 1, and in the process of hooking the hook body 1 to the cable, the operating personnel hang the hook body 1 on the cable by holding the holding end of the operating rod 4, the operating personnel can conveniently carry out hanging operation, the wireless transceiver is arranged on the rod body of the operating rod 4 and can receive the sensing signal and output the sensing information according to the sensing signal, for example, the wireless transceiver can be communicatively connected to the mobile terminal, the wireless transceiver receives the sensing signal after the cable trigger sensor 22 outputs the sensing signal, and outputs corresponding sensing information to the mobile terminal according to the sensing signal, for example, a mobile phone, a PC terminal and the like, so that the operator can conveniently monitor and know the locking condition of the cable in time through the mobile terminal, thereby helping the operating personnel to avoid potential electric shock injury and ensuring the personal safety of the operating personnel.

In one embodiment, in order to stabilize the connection between the sensor 22 and the wireless transceiver and avoid the disconnection between the sensor 22 and the wireless transceiver caused by misoperation in the process of using the short-circuit protection device for the ground wire, as shown in fig. 3, specifically, a conductor groove 211 is formed on the contact surface of the sensing sleeve 21 and the hook portion 12, and the conductor is arranged in the conductor groove 211. Set up metallic channel 211 on the contact surface of response cover 21 and couple portion 12, response cover 21 suit can be with wire encapsulation in metallic channel 211 after on couple portion 12, avoid the maloperation and break off the connection between sensor 22 and the wireless transceiver, and the protection wire of wire encapsulation avoids the rainwater to soak in metallic channel 211 simultaneously, improves the life-span and the connection reliability of wire.

In another embodiment, a wire groove 211 is formed on the outer side surface facing away from the contact surface of the sensing sleeve 21 and the hook portion 12, the wire is arranged in the wire groove 211, a sealing cover is arranged at the opening end of the wire groove 211 to seal the wire groove 211, the wire is sealed in the wire groove 211 through the sealing cover, and the outer side surface of the wire groove 211 is provided with the wire groove 211, so that the wire arrangement and maintenance are convenient.

In order to protect the wireless transceiver, specifically, the short circuit protection device for the ground wire further includes a protective cover 5, the protective cover 5 being mounted on the rod body of the operation rod 4 for covering the wireless transceiver.

In order to locate the position of use of each short-circuit protection device for the earth wires, the short-circuit protection device for the earth wires further comprises, in particular, a locator which is mounted in the protective cover 5. The locator can be to have GPS, big dipper or UWB positioner, can confirm the specific position of use that is used for the short-circuit protection device of earth connection through the locator to make things convenient for the operation personnel to confirm to install this short-circuit protection device that is used for the earth connection on the correct maintenance circuit, ensure to overhaul safety.

In one embodiment, the short-circuit protection device for the ground line further comprises two return springs mounted in the corresponding receiving slots 13, the arc-shaped jaws 3 being transitionable between the fully extended state and the retracted state by the corresponding return springs. As shown in fig. 4, the reset spring is a torsion spring 32, a rotating shaft 31 is arranged in the accommodating groove 13, a rotating hole matched with the rotating shaft 31 is formed in the arc-shaped clamping piece 3, the arc-shaped clamping piece 3 is sleeved on the rotating shaft 31 through the rotating hole, the torsion spring 32 is sleeved on the rotating shaft 31, two extending ends of the torsion spring 32 are provided, one end of each extending end is abutted to the arc-shaped clamping piece 3, the other end of each extending end is abutted to the groove wall of the accommodating groove 13, the cable slides into the clamping hole 14 from between the two arc-shaped clamping pieces 3, the two arc-shaped clamping pieces 3 are bounced to be in a retracting state, after the cable slides into the clamping hole 14, the two arc-shaped clamping pieces 3 are drawn together and reset to be in a completely extending state under the action of torsion force of the torsion spring 32, and the cable is locked in the clamping hole 14 at the moment.

In the process of locking the cable, in order to ensure that the current or the induced current of sudden power transmission can be transmitted to the ground wire through the hook main body 1 and released to the ground, specifically, each arc-shaped clamping piece 3 is in conductive communication with the hook main body 1. Each arc-shaped clamping piece 3 is communicated with the hook main body 1 through a conducting wire so as to increase the conductive reliability of the hook main body 1.

The short-circuit protection device for the ground wire is connected with the ground wire, and specifically, a conductive column 15 is further arranged on the connecting part 11. Lead electrical pillar 15 and be connected with the earth connection, lead electrical pillar 15 through the setting and make things convenient for the earth connection to be connected with couple main part 1, the electric current that flows through the cable when suddenly transmitting power like this gives the earth connection through couple main part 1, lead electrical pillar 15 transmission, and the electric current is finally leaded to underground and is released, guarantees operation personnel's personal safety.

In order to facilitate an operator to hold the operating rod 4 to hang the hook main body 1 on a cable to avoid electric shock, specifically, the short-circuit protection device for the grounding wire further comprises a handle sleeve 6, and the handle sleeve 6 is sleeved at a holding end of the operating rod 4. The handle sleeve 6 is made of insulating materials, so that electric shock danger when the hook main body 1 is hung is avoided.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. A short-circuit protection device for a grounding wire, which is hung on a high-voltage cable when a power line is overhauled, is characterized by comprising:

hook body (1) comprising: a connecting part (11) and a U-shaped hook part (12) extending from the connecting part (11); the concave surface of the hook part (12) is symmetrically provided with two accommodating grooves (13), telescopic arc-shaped clamping pieces (3) are arranged in the two accommodating grooves (13), the two arc-shaped clamping pieces (3) are oppositely arranged and form clamping holes (14) with the concave surface of the hook part (12), and the two arc-shaped clamping pieces (3) can lock cables penetrating through the clamping holes (14) in a completely extending state;

sensing element (2) comprising: the hook comprises an induction sleeve (21) detachably sleeved on the hook main body (1) and a sensor (22) which is arranged on the induction sleeve (21) and positioned at the top of the arc bottom of the hook main body (1); the sensor (22) outputs a sensing signal when sensing that the cable is inserted into the clamping hole (14).

2. The short-circuit protection device for a ground line according to claim 1, further comprising: the operating rod (4) is connected with the connecting part (11), and the wireless transceiver is arranged on the rod body of the operating rod (4);

the wireless transceiver is connected with the sensor (22) through a wire, and the wireless transceiver is used for outputting corresponding sensing information according to the sensing signal.

3. The short-circuit protection device for the ground wire according to claim 2, wherein a conductor groove (211) is formed on a contact surface of the sensing sleeve (21) and the hook part (12), and the conductor is arranged in the conductor groove (211).

4. The short-circuit protection device for a ground wire according to claim 2, further comprising a protective cover (5), said protective cover (5) being mounted on the body of the operating lever (4) for enclosing the wireless transceiver.

5. Short-circuit protection device for ground wires according to claim 4, characterized in that it further comprises a locator mounted inside the protective cover (5).

6. Short-circuit protection device for ground wires according to claim 1, characterized in that it further comprises two return springs mounted in corresponding housing slots (13), said arc-shaped jaws (3) being transitionable between a fully extended condition and a retracted condition by means of corresponding return springs.

7. Short-circuit protection device for an earth connection according to claim 1, characterized in that each of said arc-shaped jaws (3) is in conductive communication with said hook body (1).

8. The short-circuit protection device for an earth connection according to claim 1, characterized in that a conductive post (15) is also provided on the connection portion (11).

9. The short-circuit protection device for a ground wire according to claim 2, characterized in that it further comprises a handle sleeve (6), said handle sleeve (6) being fitted over the handling end of the operating lever (4).

10. Short-circuit protection device for an earth connection according to claim 1, characterized in that the induction sleeve (21) is made of an insulating material.