CN210866537U

CN210866537U - High-voltage electric power fitting for electric power circuit

Info

Publication number: CN210866537U
Application number: CN201921815687.9U
Authority: CN
Inventors: 马丽; 田俊红; 石玉龙; 芦素芬; 王志伟
Original assignee: State Grid Henan Electric Power Company Yanling County Power Supply Co
Current assignee: State Grid Henan Electric Power Company Yanling County Power Supply Co
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-06-26
Anticipated expiration: 2029-10-28

Abstract

The utility model provides a high voltage electric power fitting for power line, which comprises a housin, the bus import has been seted up at the right side middle part of casing, two separated time imports have been seted up in the left side of casing, the bottom welding of casing has connecting bolt, the welding of the inner chamber middle part of casing has leads electrical pillar, it has the bar-shaped piece all to weld between the right side of leading electrical pillar and the left side of leading electrical pillar and the bus import, the top spiro union of casing has three fastening bolt, the top left and right sides of casing all pegs graft and have vertical pipe, the top spiro union of vertical pipe has rain-proof lid, the inner chamber bottom of vertical pipe is inlayed and is equipped with reset spring, reset spring. The utility model relates to a science can eliminate wire stress, and quick fixed wire avoids recovering the spring in the current design and is compressed and lead to the problem that life is short.

Description

High-voltage electric power fitting for electric power circuit

Technical Field

The utility model relates to a power equipment technical field, specific theory relates to a high voltage electric power fitting for power line.

Background

The widely used metal accessories of iron or aluminum for the power transmission line are collectively called as hardware fittings. In the wiring process of a high-voltage line, the installation is too troublesome, and when the difference of the external temperature is too large, the internal stress of the electric wire is improved due to the expansion caused by heat and the contraction caused by cold of the electric wire because of the temperature, further, since the electric wire itself is easily broken in long-term use, chinese patent CN201720977408.3 discloses a high-voltage electric power fitting for an electric power line, which uses a lower restoring spring for stress cancellation, but in practice, the total length of the electric wire is long, the weight is heavy, the pressure to the bottom restoring spring is larger, the requirement on the elastic coefficient of the restoring spring is higher, meanwhile, the restoring spring is mostly in a compressed deformation state, the fatigue damage is easy to occur, the service life is shorter, therefore, it is necessary to improve the stress relief structure to avoid the problem that the service life of the restoring spring is short due to the weight of the wire fixed to the lower side.

In order to solve the above problems, people are always seeking an ideal technical solution.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a high-voltage electric power fitting for power line, the utility model relates to a science can eliminate wire stress, and quick fixed wire avoids recovering spring compressed and the problem that leads to life weak point in the current design.

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

a high-voltage electric power fitting for an electric power circuit comprises a shell, wherein a bus inlet is formed in the middle of the right side of the shell, two branch inlets are formed in the left side of the shell, the two branch inlets are symmetrically arranged in the front-back direction of a transverse central axis of the bus inlet, connecting bolts are welded at the bottom of the shell, a conductive column arranged in the front-back direction is welded in the middle of an inner cavity of the shell, strip-shaped blocks are welded between the left side of the conductive column and the right side of the two branch inlets and between the right side of the conductive column and the left side of the bus inlet, the length direction of the strip-shaped blocks is arranged in the left-right direction, three fastening bolts are screwed in the front-back direction of the middle of the top of the shell at intervals side by side, the lower ends of the three fastening bolts extend into the shell and are positioned right above the, inside the bottom of vertical pipe stretched into the casing, the inner chamber bottom of vertical pipe inlayed and is equipped with the reset spring, and the contact plate that the level set up is connected with to the bottom of reset spring.

The threading groove has been seted up along controlling the direction in the middle part of the upper surface of every piece bar-shaped piece, has seted up three electrically conductive groove around the upper surface of leading electrical pillar at the interval side by side, and the left side, the right side and the upside of threading groove and electrically conductive groove are all uncovered, and three electrically conductive groove corresponds about with three threading groove respectively and is connected, and the constant head tank has all been seted up at the bottom center of every electrically conductive groove.

Three fastening bolt correspond respectively and are located three electrically conductive groove directly over, and every fastening bolt's lower extreme all rotates and is equipped with rolling bearing, and rolling bearing's outer lane is connected with the holder, and the arc-shaped clamping groove has been seted up to the bottom of holder, and the holder matches with corresponding constant head tank and pegs graft.

The vertical pipe is the ladder pipe of going up thin thick down, and the cooperation is pressed to the inside ladder department roof pressure of the upper end of reset spring and vertical pipe, presss from both sides between the top of rain-proof lid and casing and is equipped with the rubber seal ring of cover on vertical pipe, and the lower extreme border of rain-proof lid compresses tightly on rubber seal ring, and the contact plate is the rubber slab.

Compared with the prior art, the utility model has substantive characteristics and progress, specifically speaking:

1) the utility model discloses a bus import has been seted up at casing right side middle part, two separated time imports have been seted up on the casing left side, each wire stretches into the casing inside through bus import and two separated time imports respectively, and lay along the threading groove of each piece bar respectively until the head end is located the corresponding each conducting groove on the conducting pillar, can fix the wire fast through fastening bolt, specifically screw up three fastening bolts downwards and make the holder compress tightly the wire and insert and connect in the corresponding constant head tank, thereby fix the wire fast, after the wire is fixed, the contact plate can extrude the wire under the spring action of reset spring, realize eliminating the internal stress that the wire produced because of expend with heat and contract with cold, avoid the wire fracture;

2) the utility model discloses a reset spring establishes on wire upper portion, has avoided among the prior art that the reset spring that lies in the wire downside leads to reset spring to be in compression deformation state always because of the wire dead weight extrusion, leads to the shorter problem of reset spring life, and the contact plate is the rubber slab, reduces the wearing and tearing to the wire crust, and rubber seal ring can improve sealed effect, avoids the infiltration.

Drawings

Fig. 1 is a schematic sectional structure diagram of the present invention.

Fig. 2 is a top view of the housing, the conductive post, and the bar block of the present invention.

Fig. 3 is a schematic connection diagram of the conductive column and the bar-shaped block according to the present invention.

Fig. 4 is a schematic view of a connection structure between the lower end of the fastening bolt and the holder according to the present invention.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

As shown in fig. 1-4, a high-voltage electric power fitting for an electric power circuit comprises a housing 1, a bus inlet 2 is arranged in the middle of the right side of the housing 1, two branch inlets 3 are arranged on the left side of the housing 1, the two branch inlets 3 are symmetrically arranged in front and back of a transverse central axis of the bus inlet 2, a connecting bolt 4 is welded at the bottom of the housing 1, a conductive post 5 arranged in front and back directions is welded at the middle of an inner cavity of the housing 1, strip-shaped blocks 6 are welded between the left side of the conductive post 5 and the right side of the two branch inlets 3 and between the right side of the conductive post 5 and the left side of the bus inlet 2, the strip-shaped blocks 6 are arranged in left and right directions, three fastening bolts 7 are screwed in parallel at intervals in front and back of the middle of the top of the housing 1, the lower ends of the three fastening bolts 7 all extend into the housing 1 and are positioned right of the conductive post 5, vertical, the top spiro union of vertical pipe 8 has rain-proof lid 9, and inside vertical pipe 8's bottom stretched into casing 1, the inner chamber bottom of vertical pipe 8 inlayed and is equipped with reset spring 10, and reset spring 10's bottom is connected with the contact plate 11 that the level set up. The connecting bolt 4 is used to fix the housing 1 to a utility pole of a power line.

The threading groove 12 has been seted up along left right direction in the upper surface middle part of every piece bar-shaped block 6, leads the upper surface of electrical pillar 5 around spaced apart three electrically conductive groove 13 that is equipped with side by side, the left side of threading groove 12 and electrically conductive groove 13, right side and upside are all uncovered, three electrically conductive groove 13 corresponds with three threading groove 12 respectively about and is connected, constant head tank 14 has all been seted up at the bottom center of every electrically conductive groove 13. Threading groove 12 both can lead fixedly to the wire, can prevent again that the wire from appearing sideslipping, avoids wire head end and leads 5 contact failure and cause the outage.

Three fastening bolt 7 correspond respectively and are located three electrically conductive groove 13 directly over, and the lower extreme of every fastening bolt 7 all rotates and is equipped with rolling bearing 15, and rolling bearing 15's outer lane is connected with holder 16, and arc clamping groove 17 has been seted up to holder 16's bottom, and holder 16 matches with corresponding constant head tank 14 and pegs graft. The arc-shaped clamping groove 17 can be pressed to clamp the lead, so that the lead is prevented from falling off.

Vertical pipe 8 is the ladder pipe of going up thin thick down, and the cooperation is gone up with the inside ladder department roof pressure of vertical pipe 8 to the upper end of reset spring 10, presss from both sides between the top of rain-proof lid 9 and casing 1 and is equipped with the rubber seal ring 18 of cover on vertical pipe 8, and the lower extreme border of rain-proof lid compresses tightly on the rubber seal ring, and contact plate 11 is the rubber slab. The rubber sealing washer can improve the sealing effect and avoid water seepage, and the contact plate 11 is arranged as a rubber plate to reduce the abrasion to the sheath of the wire.

The utility model discloses a theory of operation: each wire stretches into inside casing 1 through bus import 2 and two separated time import 3 respectively, and lay respectively along the threading groove 12 of each piece bar-shaped block 6 and lie in leading the corresponding each electrically conductive groove 13 on electrical pillar 5 until the head end, reset spring 10 passes through contact plate 11 crimping wire downwards, can fix the wire fast through fastening bolt 7, specifically screw up three fastening bolt 7 downwards and make the holder 16 compress tightly the wire and insert and connect in corresponding constant head tank 14, thereby fix the wire fast, after the wire is fixed, contact plate 11 can be under reset spring's elasticity effect to the wire extrusion, realize eliminating the wire because of the internal stress that expend with heat and contract with cold produced, avoid the wire fracture.

The above embodiments are only used for illustrating but not limiting the technical solution of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that; the present invention may be modified or substituted with equivalents without departing from the spirit and scope of the invention, which should be construed as being limited only by the claims.

Claims

1. A high voltage power fitting for a power line, characterized in that: the cable connector comprises a shell, a bus inlet is formed in the middle of the right side of the shell, two branch inlets are formed in the left side of the shell, the two branch inlets are symmetrically arranged in the front and back direction of the transverse central axis of the bus inlet, connecting bolts are welded at the bottom of the shell, conductive columns arranged in the front and back direction are welded in the middle of the inner cavity of the shell, strip-shaped blocks are welded between the left side of each conductive column and the right side of each branch inlet and between the right side of each conductive column and the left side of the bus inlet, the strip-shaped blocks are arranged in the left and right direction, three fastening bolts are screwed in the front and back of the middle of the top of the shell at intervals side by side, the lower ends of the three fastening bolts extend into the shell and are positioned right above the conductive columns, vertical pipes positioned right above the corresponding strip-shaped blocks are inserted, the bottom of the inner cavity of the vertical pipe is embedded with a restoring spring, and the bottom of the restoring spring is connected with a contact plate which is horizontally arranged.

2. The high-voltage electric power fitting for electric power lines of claim 1, wherein: the threading groove has been seted up along controlling the direction in the middle part of the upper surface of every piece bar-shaped piece, has seted up three electrically conductive groove around the upper surface of leading electrical pillar at the interval side by side, and the left side, the right side and the upside of threading groove and electrically conductive groove are all uncovered, and three electrically conductive groove corresponds about with three threading groove respectively and is connected, and the constant head tank has all been seted up at the bottom center of every electrically conductive groove.

3. The high-voltage electric power fitting for electric power lines of claim 2, characterized in that: three fastening bolt correspond respectively and are located three electrically conductive groove directly over, and every fastening bolt's lower extreme all rotates and is equipped with rolling bearing, and rolling bearing's outer lane is connected with the holder, and the arc-shaped clamping groove has been seted up to the bottom of holder, and the holder matches with corresponding constant head tank and pegs graft.

4. The high-voltage electric power fitting for electric power lines of claim 1, wherein: the vertical pipe is the ladder pipe of going up thin thick down, and the cooperation is pressed to the inside ladder department roof pressure of the upper end of reset spring and vertical pipe, presss from both sides between the top of rain-proof lid and casing and is equipped with the rubber seal ring of cover on vertical pipe, and the lower extreme border of rain-proof lid compresses tightly on rubber seal ring, and the contact plate is the rubber slab.