CN210201439U

CN210201439U - Square tube type insulating cross arm

Info

Publication number: CN210201439U
Application number: CN201921320459.4U
Authority: CN
Inventors: Fuqiang Zhou; 周富强; Jin Tao; 陶金
Original assignee: Anda Electric Polytron Technologies Inc
Current assignee: Anda Electric Polytron Technologies Inc
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-03-27
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses an insulating cross arm of side's pipe type relates to equipment technical field for the electric wire netting, including the staple bolt structure, the staple bolt structure includes staple bolt and lower staple bolt, goes up the staple bolt and is close to the top position and is equipped with top looks cross arm structure, is equipped with horizontal cross arm structure on the lower staple bolt. The utility model has good corrosion resistance, good flame retardant property, high strength and longer service life; the square tube type insulating cross arm improves the insulation level of an overhead insulated line, and effectively solves the problems of lightning trip of a power distribution network and lightning breakage of an insulated wire; the square tube type insulating cross arm can reduce the loss of electric power energy and save the electric power energy.

Description

Square tube type insulating cross arm

Technical Field

The utility model relates to an equipment technical field for the electric wire netting especially relates to an insulating cross arm of square pipe type.

Background

The cross arm is installed on the top of the telegraph pole and is used for installing insulators and hardware fittings to support the conducting wires and the lightning conductors and keep a certain safety distance according to the regulations. At present, lightning induced overvoltage is a main factor causing disconnection of a 10kV overhead insulated distribution line; and the prior cross arms are mostly made of wood cross arms or iron cross arms, which have poor corrosion resistance, flame retardant property, low strength, poor insulation property, short service life and large power energy loss.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an insulating cross arm of square pipe type for solving above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a square tube type insulating cross arm comprises a hoop structure, wherein the hoop structure comprises an upper hoop and a lower hoop, a top phase cross arm structure is arranged at a position, close to the top, of the upper hoop, a horizontal cross arm structure is arranged on the lower hoop, and a needle type insulator structure is arranged on the horizontal cross arm structure; the upper hoop comprises a third mounting plate, a fixed hoop and a movable hoop, a mounting hole is processed on the third mounting plate, the position of the third mounting plate close to the bottom is provided with the fixed hoop, and the fixed hoop is matched with the movable hoop; the lower anchor ear comprises a U-shaped anchor ear and a base plate, a mounting hole is processed on the base plate, and the U-shaped anchor ear extends into the mounting hole of the base plate; the horizontal cross arm structure comprises a square tube, a first bush, a second bush, a third bush, hoop flat iron, fillers and end sockets, wherein the cross section of the square tube is rectangular, the side surface of the square tube is provided with the first bush, the positions, close to the two ends, of the top of the square tube are provided with the second bush, the side surface of the square tube is positioned between the first bush and the second bush and is provided with the third bush, the first bush, the second bush and the third bush all cross the square tube, the central position of the square tube is provided with the hoop flat iron, the hoop flat iron is arc-shaped, the hoop flat iron is matched with the U-shaped hoop, the fillers are filled in the square tube, and the end sockets are; the pin insulator structure comprises a pin steel cap, a first core rod, an outer sleeve, pin steel pins, a screw and square gaskets, wherein the outer sleeve is sleeved on the first core rod; the top phase cross arm structure comprises a top hardware fitting, a second core rod, an outer sleeve and a connecting hardware fitting, wherein the outer sleeve is sleeved on the second core rod, the top hardware fitting is installed at the top of the second core rod, a third groove is machined at the top of the top hardware fitting, a fourth groove is machined at the bottom of the third groove on the top hardware fitting, the connecting hardware fitting is installed at the bottom of the second core rod, and a mounting hole is machined in the connecting hardware fitting.

Preferably, the fixed anchor ear and the movable anchor ear are provided with stiffened plates near two ends.

Preferably, the first core rod and the second core rod are both made of epoxy resin material. The first core rod is formed by drawing or extruding the epoxy resin impregnated glass fiber, and has the advantages of acid resistance and high temperature resistance, the first core rod, the needle type steel cap and the needle type steel foot are in compression joint by a special insulator compression joint machine, the mechanical strength is high, and the tensile strength of the glass fiber drawing rod loaded inside is 1 time higher than that of common steel. The second core rod is formed by drawing or extruding glass fiber impregnated by epoxy resin, and has the advantages of acid resistance and high temperature resistance, the second core rod, the top hardware fitting and the connecting hardware fitting are in compression joint by adopting a special insulator compression joint machine, the mechanical strength is high, and the tensile strength of the glass fiber drawing rod loaded inside is 1 time higher than that of common steel.

Preferably, the outer casing is made of a silicone rubber material. The outer sleeve is made of a novel insulating material which is mainly made of silicon rubber materials and modified, and has the advantages of good hydrophobicity, stain resistance, tracking resistance and electric erosion resistance.

Preferably, the filler is a closed cell polyurethane foam.

Preferably, the first bushing, the second bushing, the third bushing and the square pipe are fixedly connected in an adhesive manner.

The beneficial effects of the utility model reside in that: the utility model has good corrosion resistance, good flame retardant property, high strength and longer service life; the square tube type insulating cross arm improves the insulation level of an overhead insulated line, and effectively solves the problems of lightning trip of a power distribution network and lightning breakage of an insulated wire; the square tube type insulating cross arm can reduce the loss of electric energy and save the electric energy; the square tube type insulating cross arm is simple in structure, convenient to install and detach and low in maintenance cost.

Drawings

FIG. 1 is a general assembly diagram of the present invention;

fig. 2 is a schematic view of the hoop structure of the present invention;

fig. 3 is a schematic structural view of the horizontal cross arm of the present invention;

fig. 4 is a schematic structural view of the pin insulator of the present invention;

fig. 5 is a schematic structural view of a top-phase cross arm of the present invention;

wherein: 1. a top phase cross arm structure; 2. a pin insulator structure; 3. a horizontal cross arm structure; 4. a hoop structure; 5. a utility pole; 6. a jacket; 7. mounting holes; 101. a third groove; 102. a fourth groove; 103. a top hardware fitting; 104. a second core rod; 105. connecting a hardware fitting; 201. a first groove; 202. a second groove; 203. a needle-type steel cap; 204. a first core rod; 205. needle type steel pins; 206. a screw; 207. a square gasket; 301. a second bushing; 302. a square tube; 303. a first bushing; 304. a third bushing; 305. sealing the end; 307. hooping flat iron; 401. Adding a rib plate; 402. a movable hoop; 403. fixing the anchor ear; 404. a third mounting plate; 407. A U-shaped hoop; 408. a backing plate.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1, the utility model discloses a staple bolt structure 4, staple bolt structure 4 include staple bolt and lower staple bolt. The upper anchor ear is provided with a top phase cross arm structure 1 near the top. And a horizontal cross arm structure 3 is arranged on the lower hoop. As shown in fig. 2, the upper hoop includes a third mounting plate 404, a fixed hoop 403 and a movable hoop 402. The third mounting plate 404 is formed with a mounting hole 7. The third mounting plate 404 is provided with a fixed hoop 403 near the bottom, and the fixed hoop 403 is matched with the movable hoop 402. And rib plates 401 are arranged at the positions, close to the two ends, of the fixed anchor ear 403 and the movable anchor ear 402. The lower anchor ear comprises a U-shaped anchor ear 407 and a backing plate 408. The backing plate 408 is provided with a mounting hole 7, and the U-shaped anchor hoop 407 extends into the mounting hole 7 of the backing plate 408. As shown in fig. 3, the horizontal cross arm structure 3 includes a square pipe 302, a first bushing 303, a second bushing 301, a third bushing 304, a hoop iron 307, a filler, and a sealing head 305. The square tube 302 has a rectangular cross-section. A first bushing 303 is installed on the side surface of the square pipe 302, a second bushing 301 is installed on the top of the square pipe 302 close to the two ends, and a third bushing 304 is installed on the side surface of the square pipe 302 between the first bushing 303 and the second bushing 301. First bushing 303, second bushing 301, and third bushing 304 all traverse square tube 302. The first bushing 303, the second bushing 301, the third bushing 304 and the square pipe 302 are fixedly connected by gluing. The hoop band iron 307 is installed at the center of the square pipe 302, the hoop band iron 307 is arc-shaped, and the hoop band iron 307 is matched with the U-shaped hoop 407. The square pipe 302 is filled with a filler, which is a closed-cell polyurethane foam. End sockets 305 are mounted at two ends of the square pipe 302. As shown in fig. 4, the pin insulator structure 2 comprises a pin steel cap 203, a first mandrel 204, an outer sleeve 6, a pin steel foot 205, a screw 206 and a square washer 207. The first mandrel 204 is sleeved with the jacket 6. A needle type steel cap 203 is mounted on the top of the first core rod 204, a first groove 201 is machined in the top of the needle type steel cap 203, and a second groove 202 is machined in the position, located at the bottom of the first groove 201, of the needle type steel cap 203. The bottom of the first core rod 204 is provided with a needle type steel pin 205, the bottom of the needle type steel pin 205 is provided with a screw 206, the screw 206 is sleeved with a square gasket 207, and the number of the square gaskets 207 is two. As shown in fig. 5, the top phase cross arm structure 1 includes a top metal fitting 103, a second core rod 104, an outer jacket 6, and a connecting metal fitting 105. The second mandrel 104 is sleeved with the jacket 6. The top hardware fitting 105 is installed on the top of the second core rod 104, a third groove 101 is processed on the top of the top hardware fitting 105, and a fourth groove 102 is processed on the top hardware fitting 105 at the bottom of the third groove 101. The connecting metal fittings 105 are installed at the bottom of the second core rod 104, and the installing holes 7 are processed on the connecting metal fittings 105. In this embodiment, the first mandrel 204 and the second mandrel 104 are both made of an epoxy material; the outer sleeve 6 is made of a silicone rubber material.

When the third mounting plate 404 is mounted, (1) the mounting hole 7 of the third mounting plate 404 is aligned with the mounting hole 7 of the link fitting 105, and the third mounting plate and the link fitting are fixedly mounted through bolts and nuts; (2) the fixed hoop 403 and the movable hoop 402 are arranged on the telegraph pole 5 in a surrounding mode, and the fixed hoop 403 and the movable hoop 402 are fixedly arranged on the telegraph pole 5 through bolts and nuts; (3) inserting the screw 206 on the needle type steel pin 205 into the second bushing 301 on the square pipe 302, and fixedly mounting the screw 206 on the square pipe 302 through a nut, wherein the square pipe 302 is positioned between the square gaskets 207; (4) the U-shaped anchor ear 407 is encircled on the telegraph pole 5 below the upper anchor ear, then the anchor ear flat iron 307 on the square tube 302 is matched with the U-shaped anchor ear 407, and the U-shaped anchor ear 407 transversely penetrates through the first bushing 303 of the square tube 302 and the mounting hole 7 of the backing plate 408 and is fixed on the telegraph pole 5 through bolts; (5) three wires in the three-phase voltage system are respectively placed in the first groove 201 of two pin insulator structures 2 and the third groove 101 of the top phase cross arm structure 1, the wires in the first groove 201 are fixed through the binding wires wound on the second groove 202, the wires in the third groove 101 are fixed through the binding wires wound on the fourth groove 102, and the square tube type insulating cross arm can be normally used.

The above is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereby. Those skilled in the art will appreciate that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention. The scope of the invention is defined by the claims and their equivalents.

Claims

1. The utility model provides an insulating cross arm of square pipe type, includes staple bolt structure, its characterized in that: the hoop structure comprises an upper hoop and a lower hoop, a top phase cross arm structure is arranged at the position, close to the top, of the upper hoop, a horizontal cross arm structure is arranged on the lower hoop, and a needle type insulator structure is arranged on the horizontal cross arm structure; the upper hoop comprises a third mounting plate, a fixed hoop and a movable hoop, a mounting hole is processed on the third mounting plate, the position of the third mounting plate close to the bottom is provided with the fixed hoop, and the fixed hoop is matched with the movable hoop; the lower anchor ear comprises a U-shaped anchor ear and a base plate, a mounting hole is processed on the base plate, and the U-shaped anchor ear extends into the mounting hole of the base plate; the horizontal cross arm structure comprises a square tube, a first bush, a second bush, a third bush, hoop flat iron, fillers and end sockets, wherein the cross section of the square tube is rectangular, the side surface of the square tube is provided with the first bush, the positions, close to the two ends, of the top of the square tube are provided with the second bush, the side surface of the square tube is positioned between the first bush and the second bush and is provided with the third bush, the first bush, the second bush and the third bush all cross the square tube, the central position of the square tube is provided with the hoop flat iron, the hoop flat iron is arc-shaped, the hoop flat iron is matched with the U-shaped hoop, the fillers are filled in the square tube, and the end sockets are; the pin insulator structure comprises a pin steel cap, a first core rod, an outer sleeve, pin steel pins, a screw and square gaskets, wherein the outer sleeve is sleeved on the first core rod; the top phase cross arm structure comprises a top hardware fitting, a second core rod, an outer sleeve and a connecting hardware fitting, wherein the outer sleeve is sleeved on the second core rod, the top hardware fitting is installed at the top of the second core rod, a third groove is machined at the top of the top hardware fitting, a fourth groove is machined at the bottom of the third groove on the top hardware fitting, the connecting hardware fitting is installed at the bottom of the second core rod, and a mounting hole is machined in the connecting hardware fitting.

2. The square tube type insulating cross arm of claim 1, wherein: and reinforcing plates are arranged at the positions, close to the two ends, of the fixed anchor ear and the movable anchor ear.

3. The square tube type insulating cross arm of claim 1, wherein: the first core rod and the second core rod are both made of epoxy resin materials.

4. The square tube type insulating cross arm of claim 1, wherein: the outer sleeve is made of a silicon rubber material.

5. The square tube type insulating cross arm of claim 1, wherein: the filler is polyurethane foam with a closed cell structure.

6. The square tube type insulating cross arm of claim 1, wherein: the first bush, the second bush, the third bush and the square pipe are fixedly connected in an adhesive mode.