CN211700606U

CN211700606U - Switch cabinet wiring terminal

Info

Publication number: CN211700606U
Application number: CN202020520388.9U
Authority: CN
Inventors: 郭跃东; 张亚涛; 郭丽华; 杨冰; 方欣
Original assignee: Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Current assignee: Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-10-16
Anticipated expiration: 2030-04-10

Abstract

The utility model discloses a switch cabinet wiring terminal, which is used for connecting a cable to a guide bar of a switch cabinet and comprises a fixed part, a line pressing part and a connecting part, wherein the fixed part is detachably connected with the guide bar; the wire pressing part is arranged on one side of the fixing part, and the middle part of the wire pressing part is sleeved on the cable and connected with the cable in a compression joint manner; the opposite side of fixed part is located to the relative line ball portion of connecting portion, is provided with the connecting piece on the connecting portion, and binding post passes through the connecting piece to be connected with the earth connection. The utility model provides a cubical switchboard binding post has increased connecting portion on current binding post's basis, has realized the reliable ground connection of cable, avoids binding post to break away from water conservancy diversion row back, produces the response electricity because of the cable is not grounded, causes the injury to the maintainer.

Description

Switch cabinet wiring terminal

Technical Field

The utility model relates to an electric power overhauls technical field, especially relates to a cubical switchboard binding post.

Background

At present, switch cabinets are widely applied to power systems, and most of feeder lines of the switch cabinets are outgoing cables. The connection of the cable and the guide bar in the switch cabinet is completed through a wiring terminal, the wiring terminal is also called a wire nose, a copper wiring nose, a copper pipe nose, a wiring nose and the like, and the connection is different in terms of law in various places and industries and is a connecting piece for connecting the wire and the cable to electrical equipment. The cable and the connecting terminal are connected together through mechanical compression joint, and then the connecting terminal and the guide bar are connected together through bolts.

Referring to fig. 1, fig. 1 is a conventional cable connection device for a switch cabinet, which includes a connection terminal connected to a cable and a current guiding bar connected to the connection terminal, wherein the connection terminal and the current guiding bar are connected by a bolt, and the current guiding bar can be connected to a ground wire. Because the grounding wire is hung on the diversion bar, when a maintainer carries out dismounting and maintenance on the cable, the wiring terminal needs to be dismounted from the diversion bar, when the fixing bolts of the wiring terminal and the diversion bar are loosened, the wiring terminal is separated from the diversion bar, and the cable loses the safety measure of grounding.

The utility model discloses a chinese utility model patent that publication number is CN203721918U discloses a cable terminal ground connection protection fastener, including door type frame, door type frame is formed by the frame connection of crossbeam and crossbeam both sides, is equipped with the screw on one of them side frame, and the bolt passes the screw presss from both sides tight piece at bolt one end fixedly connected with, press from both sides tight piece and be located door type frame, be fixed with the nut at the bolt other end, fixedly connected with earth connection on one of the both sides frame, this fastener can lug connection on cable terminal to guarantee cable terminal also can ground connection constantly when unloading from female arranging. However, the cable terminal grounding protection wire clamp clamps the cable terminal through the clamping block, the cable terminal is generally in a flat structure, and the problem of insecure connection exists through clamping and fixing, so that the cable and the grounding wire are separated from each other, and the safety of maintenance personnel is endangered.

The chinese patent publication No. CN103280637A discloses that when a wire nose is attached to a wire-incoming cable head, a section of braided bare copper wire is inserted into a wire barrel of the wire nose, and a terminal lug is attached to the end of the braided bare copper wire to form a pre-grounded terminal. When the equipment is overhauled, the grounding terminal of the grounding security ground wire is connected with the ground wire pile; then the equipment end of the grounding security ground wire is connected with a ground wire terminal on the nose of the incoming cable; the wire nose of the incoming cable is then removed. After the maintenance is finished, firstly installing the incoming cable, and then detaching the grounding security ground wire equipment end connected with the incoming cable nose; and finally, the ground wire pile is detached from the ground wire pile. Thus, during the maintenance period of the equipment, the grounding protection is carried out all the time. According to the method disclosed by the invention, before the cable and the cable nose are tightly pressed and fixed, the ground terminal is inserted into the wire barrel of the cable nose, the cable is overhauled after being grounded through the ground terminal, and the problem that the ground terminal is separated from the cable exists during the overhauling of the cable, so that potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at prior art not enough, provide a cubical switchboard binding post for the cubical switchboard cable can safe ground connection when carrying out dismouting maintenance, improves the security of cubical switchboard cable dismouting maintenance operation.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a switch cabinet terminal for connecting a cable to a conductor bar of a switch cabinet, comprising:

the fixing part is detachably connected with the flow guide row;

the wire pressing part is arranged on one side of the fixing part, and the middle part of the wire pressing part is sleeved on the cable and connected with the cable in a compression joint mode; and

the connecting portion is arranged on the other side of the fixing portion relative to the line pressing portion, a connecting piece is arranged on the connecting portion, and the wiring terminal is connected with the grounding wire through the connecting piece.

Further, the connecting member includes a connecting hole and/or an L-shaped sliding connecting groove.

Further, the connecting portion is perpendicular to the fixing portion.

Further, the connecting portion is arranged towards the direction far away from the flow guide row.

Further, the connecting terminal is integrally formed.

Furthermore, the surface of the wiring terminal adopts a silver plating process, and the thickness of a silver plated layer is not less than 8 mu m.

Furthermore, the fixing part is provided with a fixing hole, and the wiring terminal is detachably connected with the flow guide row through the fixing hole.

Compared with the prior art, the utility model, use the utility model provides a binding post has following beneficial effect:

the utility model provides a cubical switchboard binding post has increased connecting portion on traditional binding post's basis, is provided with connecting hole and/or L type sliding connection groove on the connecting portion, and this connecting hole and L type sliding connection groove all can be connected with the terminal of earth connection, is suitable for the different earth connection of terminal structure.

Through the utility model discloses an implement, can make binding post still keep reliable ground state after breaking away from the water conservancy diversion row, realized the all-round earth protection of power side and line side, thoroughly eliminated the protection dead angle and threatened to operation personnel personal safety.

Drawings

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

FIG. 1 is a schematic structural diagram of a conventional cable connection device for a switch cabinet;

fig. 2 is a schematic structural view of a use state of a switch cabinet wiring terminal provided by the present invention;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

fig. 4 is a top view of the switch cabinet terminal provided by the present invention.

In the figure, 10, a switch cabinet terminal, 11, a conventional terminal, 12, a guide bar, 100, a fixing part, 110, a fixing hole, 200, a crimping part, 300, a connecting part, 310, a connecting piece, 311, a connecting hole, 312 and an L-shaped sliding connecting groove.

Detailed Description

The present invention will be further described with reference to the following examples. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a conventional cable connection device for a switch cabinet, which includes a conventional terminal 11 connected to a cable and a current guiding bar 12 connected to the conventional terminal 11, wherein the conventional terminal 11 and the current guiding bar 12 are connected by a bolt.

Referring to fig. 2 and fig. 3, fig. 2 is a schematic structural diagram of a use state of the switch cabinet wiring terminal 10 according to the present invention, and fig. 3 is a sectional view of fig. 2 along a direction a-a. The utility model provides a cubical switchboard binding post 10 contains fixed part 100, line ball portion 300 and connecting portion 300.

The fixing part 100 is detachably connected with the guide row 12; the line pressing part 300 is arranged on one side of the fixing part 100, the line pressing part 300 is of a hollow cylindrical structure, the middle part of the line pressing part 300 is sleeved on a cable, and the line pressing part 300 is connected with the cable in a mechanical compression joint mode; the connection portion 300 is disposed at the other side of the fixing portion 100, and a connection member 310 is disposed on the connection portion 300, and the connection member can be connected to a ground line to achieve reliable grounding of the cable.

In some preferred embodiments, the fixing portion 100 is provided with a fixing hole 110, and the terminal 10 is detachably connected to the guide bar 12 through the fixing hole 110. In some embodiments, the fixing hole 110 is a screw hole with a diameter of 14mm, and the terminal 10 is screwed with the guide bar 12 through a bolt with a diameter of M12 × 30 mm.

In order to save space at the connection position of the cable and the guide row 12, in some preferred embodiments, the connecting portion 300 is perpendicular to the fixing portion 100 and faces away from the guide row 12, and this arrangement facilitates space saving and maintenance.

Referring to fig. 4, fig. 4 is a top view of the switch cabinet wiring terminal 10 provided by the present invention. In order to facilitate grounding of the wiring terminal 10, the connecting part 300 is provided with a connecting member 310, and the connecting member 310 can be provided with a connecting hole 311 independently, so as to facilitate connection with a grounding wire of which the terminal is a round hole; the L-shaped sliding connection slot 312 may also be provided separately to facilitate connection to a ground wire having a butterfly nut as a terminal. In some preferred embodiments, the connecting member 310 includes both the connecting hole 311 and the L-shaped sliding connecting slot 312, so as to be suitable for grounding wires with different terminal structures.

In some embodiments, the connecting portion 300 is a plate with a length of 100mm, a width of 40mm and a thickness of 5mm, and a connecting hole 311 with a diameter of 14mm is formed in the plate, and the connecting hole 311 can be connected with a round hole terminal of a ground wire through a common bolt M12 × 30mm, so as to complete grounding of the connecting portion 300; meanwhile, an L-shaped sliding connection groove 312 with the width of 14mm is further processed on the horizontal plane, the L-shaped sliding connection groove 312 can be connected with a butterfly nut terminal of the grounding wire, when the L-shaped sliding connection groove is connected, a bolt matched with the butterfly nut enters from an opening of the L-shaped sliding connection groove 312, the L-shaped sliding connection groove slides downwards, the butterfly nut is screwed after the bolt slides rightmost to the right end, and the grounding of the connecting portion 300 is completed.

In order to ensure that the wiring terminal 10 has a firm structure and good conductivity and can be reliably grounded, in some preferred embodiments, the fixing part 100, the line pressing part 300 and the connecting part 300 of the wiring terminal 10 are integrally formed, after all mechanical processing is completed, a 30-degree chamfering process is adopted for edges of the wiring terminal, a silver plating process is adopted for the surface of the wiring terminal, the thickness of a silver plating layer is not less than 8 micrometers, and the silver plating can avoid the condition of poor conductivity when air in a switch cabinet is wet.

When the cable is needed to output electric energy, the cable is inserted into the middle of the crimping part 300 and mechanically crimped, and then is in threaded connection with the guide bar 12 through the fixing hole 110 of the fixing part 100, and at the moment, the electric energy is transmitted to the cable from the guide bar of the switch cabinet. When the cable is dismounted and repaired, the power supply of the switch cabinet is disconnected, the guide bar 12 is grounded, and then the proper connecting piece 310 is selected according to the different shapes of the grounding terminals. If it is a round hole structure terminal, it is connected with the connection hole 311, and if it is a butterfly nut terminal, it is connected with the L-shaped sliding connection groove 312. Finally, the connecting terminal 10 is detached from the guide bar 12, and at this time, although the connecting terminal 10 is detached from the guide bar 12, the cable also has a grounding protection measure, so that the cable can be overhauled.

The utility model provides a cubical switchboard binding post 10 has increased connecting portion 300 on current binding post 11's basis, is provided with connecting piece 310 on connecting portion 300, and binding post 10 passes through connecting piece 310 to be connected with the earth connection, accomplishes the reliable ground connection of cable, avoids binding post 10 after breaking away from water conservancy diversion row 12, produces the response electricity because of the cable ungrounded, causes the injury to the maintainer. The utility model provides a cubical switchboard binding post 10 simple structure is firm, and electric conductive property and ground connection excellent performance have good practicality in electric power overhaul technical field.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A switch cabinet terminal for connecting a cable to a conductor bar of a switch cabinet, the terminal comprising:

the fixing part is detachably connected with the flow guide row;

the connecting part is arranged on the other side of the fixing part relative to the line pressing part, a connecting piece is arranged on the connecting part, and the wiring terminal is connected with the grounding wire through the connecting piece.

2. The switch cabinet terminal according to claim 1, wherein the connecting member comprises a connecting hole and/or an L-shaped sliding connecting groove.

3. The switch cabinet terminal according to claim 1, wherein the connecting portion is disposed perpendicular to the fixing portion.

4. The switch cabinet terminal according to claim 3, wherein the connection portion is disposed away from the current guiding row.

5. The switchgear panel terminal as claimed in claim 1, wherein the terminal is integrally formed.

6. The switch cabinet wiring terminal according to claim 1, wherein the surface of the wiring terminal is plated with silver, and the thickness of the plated silver layer is not less than 8 μm.

7. The switch cabinet wiring terminal according to claim 1, wherein a fixing hole is formed in the fixing portion, and the wiring terminal is detachably connected to the flow guide row through the fixing hole.