阅读说明：本技术 一种电力电缆接线端子专用接地线夹 (Special earth clamp for power cable wiring terminal ) 是由 杜岩伟 李书军 李智健 孟丽英 杜宇轩 张向伍 段晓 张丰林 杜好申 杜文 于 2019-12-10 设计创作，主要内容包括：本发明提供一种电力电缆接线端子专用接地线夹,属于接地线技术领域,包括夹持机构和设置在所述夹持机构上的连接机构；所述夹持机构包括两个夹板及与所述夹板相连接固定模块；所述连接机构包括将两个所述夹板连接起来的导线,所述夹板连接接地线。本发明两块带有接地线的夹板紧紧固定在电缆的接线端子,在解开接线端子的过程中、解开后及恢复接线时,电缆的接线端子始终处在接地线的保护中,可有效防范感应电或误操作反送电对检修人员造成的伤害。(The invention provides a special grounding wire clamp for a power cable wiring terminal, which belongs to the technical field of grounding wires and comprises a clamping mechanism and a connecting mechanism arranged on the clamping mechanism; the clamping mechanism comprises two clamping plates and a fixing module connected with the clamping plates; the connecting mechanism comprises a lead for connecting the two clamping plates, and the clamping plates are connected with a grounding wire. The two clamping plates with the grounding wires are tightly fixed on the wiring terminals of the cable, and the wiring terminals of the cable are always in the protection of the grounding wires in the process of disconnecting the wiring terminals, after disconnecting and when restoring the wiring, so that the damage of induced electricity or reverse electricity of misoperation to maintainers can be effectively prevented.)

1. The utility model provides a special earth clamp of power cable binding post which characterized in that: the clamping mechanism comprises a clamping mechanism and a connecting mechanism arranged on the clamping mechanism; the clamping mechanism comprises two clamping plates and a fixing module connected with the clamping plates; the connecting mechanism comprises a lead for connecting the two clamping plates, and the clamping plates are connected with a grounding wire.

2. The special ground clamp for the power cable terminal as claimed in claim 1, wherein: the fixed module comprises two lead screws connected with the clamping plates, through holes with internal threads are formed in the clamping plates, one ends of the lead screws are provided with positive external threads matched with the internal threads, and the other ends of the lead screws are provided with reverse external threads matched with the internal threads.

3. The special ground clamp for the power cable terminal as claimed in claim 2, wherein: the end part of the lead screw is provided with a handle.

4. The special ground clamp for the power cable terminal as claimed in claim 1, wherein: the fixing module comprises connecting rods connected with the clamping plates, the connecting rods are connected in a cross mode, and a connecting piece is arranged between the connecting rods.

5. A special earth clamp for power cable terminals as claimed in claim 4, wherein: the connecting piece is a spring and/or a bolt.

6. The special ground clamp for the power cable terminal as claimed in claim 1, wherein: the lower part of the inner side of the clamping plate is provided with a limiting structure.

7. The special ground clamp for power cable terminals of claim 6, wherein: the limiting structure is a limiting block or a limiting groove.

Technical Field

The invention relates to the technical field of grounding wires, in particular to a special grounding wire clamp for a power cable wiring terminal.

Background

With the development of national economy and the continuous transformation and upgrading of urban and rural power grids, the number of lines and the length of the lines of the power cables are rapidly increased. Power cables are typically connected to other electrical devices through terminals, and when field tests are performed on the power cables or the electrical devices to which the power cables are connected, the terminals of the cables are typically disconnected from the electrical devices.

The current practical situation in the field is that after the cable terminal is completely unfastened, a short-circuit grounding wire is hung at the three-phase cable terminal. However, the cable head is prone to losing ground protection during the process of untying the cable terminals. Meanwhile, the existing grounding wire clamp has the risk of loosening and falling due to insufficient elasticity, improper use and the like. Due to the two reasons, when induced electricity or misoperation reverse electricity transmission exists, the cable wiring terminal is enabled to have higher voltage, and damage is caused to maintenance personnel.

The patent with publication number CN106654635B discloses a ground clamp, which comprises a clamp body, a fastening screw, a binding post and a protective shell, wherein the clamp body is relatively provided with a static chuck and a fastening screw, the fastening screw is in threaded connection with the fastening screw, and the fastening screw can be rotated to move relatively to the static chuck in opposite directions so as to clamp a bare cable; the protective housing is including the cladding at the inoxidizing coating of fastener body surface, a protecting film for protecting line cavity both ends, a second protective cover for protecting the first protective cover of crossing the line cavity side and being used for protecting the terminal, the protecting film is made by elastic material and is equipped with the line hole of crossing that is used for the power supply cable to pass through on it, first protective cover and/or second protective cover are articulated with the inoxidizing coating, during the use, open the second protective cover, earthing device connects on the terminal and carries out the electrically conductive connection through fastener body and cable bare wire.

The patent with publication number CN209374703U discloses a ground clamp, which comprises a ground clamp body and an insulating rod, wherein the ground clamp body is provided with a first clamp body and a second clamp body; the first clamp body is arranged at the top end of the grounding wire clamp body, and the insulating rod is provided with a stud which movably penetrates through the grounding wire clamp body and is fixedly connected with the second clamp body; the bottom of the second clamp body is provided with a limiting ruler with ratchets, the grounding wire clamp body is provided with a check pin for limiting the limiting ruler, and the limiting ruler and the check pin form a one-way ratchet mechanism, so that the second clamp body can only move towards the first clamp body; the non return round pin bottom is equipped with the fixed pin, and the fixed pin carries on spacingly to the non return round pin, makes the non return round pin relieve spacing to spacing chi, makes the second clamp physical stamina to keeping away from first clamp orientation motion.

Above-mentioned two kinds of earth clamp all can firmly press from both sides tightly with the wire, makes cable and earth clamp contact inseparable, guarantees in the work progress fastener can not become flexible and form the virtual string when receiving the vibration, however the cable demolishs the back, and the cable head loses ground protection, when the reverse transmission of electricity of response electricity or maloperation, will take place the incident.

Disclosure of Invention

In view of the above, the present invention provides a ground clip for a power cable connection terminal.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

a grounding wire clamp special for a power cable wiring terminal comprises a clamping mechanism and a connecting mechanism arranged on the clamping mechanism; the clamping mechanism comprises two clamping plates and a fixing module connected with the clamping plates; the connecting mechanism comprises a lead for connecting the two clamping plates, and the clamping plates are connected with a grounding wire.

Further, the fixed module includes with two the lead screw that splint are connected, set up on the splint and have the internal screw thread through-hole, the one end setting of lead screw with the positive external screw thread of internal thread assorted, the other end setting of lead screw with the reverse external screw thread of internal thread assorted.

Further, a handle is arranged at the end part of the lead screw.

Furthermore, the fixing module comprises connecting rods connected with the clamping plates, the two connecting rods are in cross connection, and a connecting piece is arranged between the two connecting rods

Further, the connecting piece is a spring and/or a bolt.

Furthermore, the lower part of the inner side of the clamping plate is provided with a limiting structure.

Furthermore, the limiting structure is a limiting block or a limiting groove.

With the rapid development of economy, higher requirements are provided for the development of high-voltage power transmission lines, and equipment of the power transmission lines needs to be regularly checked and maintained in order to ensure the normal work of the power transmission lines. In the existing electric power operation process, the phenomena that a ground wire lead clamp is inconvenient to hang and easy to fall off and the like often occur. The ground clamp in the past adopts a spring type wire clamp, a simple device for realizing embedding by utilizing spring pressure is provided with an elastic supporting ejector rod in the wire clamp, and two ends of the elastic supporting ejector rod are respectively connected with an included angle hinge and an included angle hinge. When the lifting ring is used, after the lifting ring is removed, the spring starts to be tightened, so that the two corners of the ejector rod are unfolded. The grounding wire clamp has the problems that the clamping of a lead is realized only through the elastic force of the spring, the lead is easy to fall off, and once a sudden power is supplied, the electrodynamic force of short-circuit current is caused, so that the spring clamp is directly bounced off, the protection of a grounding wire is lost, and the life safety of an operator is seriously influenced. Therefore, those skilled in the art are eager to research into the ground clip for preventing the cable from falling off. For example, patent publication No. CN205303734U discloses an anti-drop cable insulation grounding wire clamp, which comprises a clamp body, a grounding ring connected with the clamp body, and a wiring pressing block connected with the clamp body, wherein a space is reserved between the wiring pressing block and the clamp body, the space is a wiring groove, a conductive piece with one end capable of piercing the sheath of the lead and the other end conducting with the clamp body is arranged in the wiring groove, the one end of wiring briquetting be connected with the clamp is articulated, the other end with can dismantle with the clamp through the connecting rod and be connected, be equipped with the cavity on the clamp, the cavity orientation connects to the one end of briquetting and is equipped with the opening, the other end is equipped with the through-hole, the one end and the wiring briquetting of connecting rod can be dismantled and be connected, outside the other end arranged in the cavity through the opening and extended to the cavity through the through-hole, be equipped with a plurality of recesses on the connecting rod, be equipped with on the lateral wall of cavity with recess complex spring assembly, the connecting rod is served towards. The utility model provides a convenient operation, need not to strip the anti-drop cable insulation earth clamp that wire crust and wire can not drop. Patent publication No. CN204156135U discloses a ground clamp for a high-voltage cable terminal. The cable clamp comprises a cable clamp body, a static chuck is formed on the cable clamp body, a movable chuck is further arranged on the cable clamp body, the movable chuck is matched with the cable clamp body through a threaded rod, a clamping surface is formed between the inner side end surfaces of the static chuck and the movable chuck, mounting holes perpendicular to the clamping surface are respectively arranged in the static chuck and the movable chuck, cylinders are respectively arranged in the mounting holes of the static chuck and the movable chuck, pressure springs are respectively arranged in the mounting holes of the static chuck and the movable chuck, aluminum plates are connected with the inner side end surfaces of the cylinders of the static chuck and the movable chuck, and the clamping surface is formed by the inner side end surfaces of the aluminum. The two structures are all used for increasing the firmness of the grounding wire clamp, and effective measures are not taken for the damage caused by the loss of grounding protection of the cable head in the process of removing the cable wiring terminal.

The invention has the beneficial effects that:

the invention comprises a clamping mechanism and a connecting mechanism arranged on the clamping mechanism. The clamping mechanism comprises two clamping plates and a fixing module connected with the clamping plates, and the connecting terminal is clamped tightly. The connecting mechanism comprises a lead for connecting the two clamping plates, so that the two clamping plates are in equipotential, and the clamping plates are connected with the ground wire, thereby ensuring the safety of maintainers.

The fixed module includes the lead screw that is connected with two splint, sets up on the splint to have the internal screw thread through-hole, the one end setting of lead screw with the forward external screw thread of internal thread assorted, the other end setting of lead screw and the reverse external screw thread of internal thread assorted, the tip of lead screw sets up the handle, and through the handle rotation, the distance between two copper is adjusted for the copper tightly blocks the binding post of cable.

The fixed module comprises connecting rods connected with the clamping plates, the end parts of the two connecting rods are connected, a connecting piece is arranged between the two connecting rods, the connecting piece is a spring and/or a bolt, the distance between the connecting rods is adjusted through the spring or a fixing bolt, and then the distance between the clamping plates is adjusted.

The lower part of the inner side of the clamping plate is provided with a limiting structure, the limiting structure is a limiting block or a limiting groove and is matched with the thickness of the wiring terminal, and the clamping is more stable.

Two splint that have the earth connection of this application tightly fix the binding post at the cable, at the in-process of untiing binding post, untie the back and when resumeing the wiring, the binding post of cable is in the protection of earth connection all the time, can effectively take precautions against the injury that response electricity or the anti-power transmission of maloperation caused maintainer.

This application earth clamp preparation is easy, and convenient operation can ensure that cable connecting terminal is in among the earth connection protection all the time in whole maintenance process, has ensured on-the-spot maintainer's safety.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural view of a ground clip for a power cable terminal according to embodiment 1 of the present invention.

Fig. 2 is a schematic structural view of a ground clip dedicated to a power cable connection terminal in embodiment 2 of the present invention.

Fig. 3 is a schematic structural view of a splint according to embodiment 3 of the present invention.

Fig. 4 is a schematic structural view of the splint according to embodiment 4 of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 4 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.