CN114934711A

CN114934711A - Electric power cross arm

Info

Publication number: CN114934711A
Application number: CN202210581195.8A
Authority: CN
Inventors: 郭路
Original assignee: Yuncheng Power Supply Company State Grid Shandong Electric Power Co
Current assignee: Yuncheng Power Supply Company State Grid Shandong Electric Power Co
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-08-23
Anticipated expiration: 2042-05-26
Also published as: CN114934711B

Abstract

The invention discloses an electric cross arm, which comprises a pole holding device, an anti-skidding assembly and a cross arm assembly, wherein the lower parts of a left hoop and a right hoop are connected through bolts, the anti-skidding assembly is arranged in a through groove and comprises a cam, the cam is arranged on a connecting shaft, clamping plates are arranged at two ends of the connecting shaft, a second clamping groove is formed in the upper part of each clamping plate, and a connecting screw rod is arranged in each clamping groove, wherein the left end of a connecting rod is hinged with the second clamping groove of the left hoop, the right end of the connecting screw rod is movably clamped in the second clamping groove of the right hoop, and when the upper parts of the left hoop and the right hoop are fastened, the small-diameter outer edge of the cam is abutted against the outer wall of an electric pole; the cross arm assembly comprises an insulating porcelain bottle arranged on the upper bottom plate of the supporting arm and arranged on the upper portion of the bottom plate, and the cable is fixed on the insulating porcelain bottle. According to the invention, the anti-slip assembly is arranged on the inner side of the pole holding device, and the electric pole is held tightly by utilizing the cam of the anti-slip assembly, so that the phenomenon that the hoop is loosened due to the swinging of the conducting wire after the cross arm is used for a long time is avoided, and the use stability of the cross arm is ensured.

Description

Electric power cross arm

Technical Field

The invention belongs to the field of cable suspension equipment, and particularly relates to an electric cross arm.

Background

The cross arm is an angle iron transversely fixed on the top of the telegraph pole, is used for installing insulators and hardware fittings to support a conducting wire and a lightning conductor and keep a certain safety distance according to regulations, and is an important component in the pole tower. The mode that generally adopts staple bolt or double-screw bolt fastening when current cross arm installation is installed on the upper portion of pole, and the wire can produce the swing after receiving external force influences such as wind-force, can pull the cross arm from this, and long-term use back, the staple bolt of cross arm can produce not hard up, and the whole risk that has the decline of cross arm after the staple bolt is not hard up influences the stability that the cross arm supported wire and gold utensil.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provide an electric cross arm to solve the problems that after the existing cross arm is used for a long time, a hoop is loosened due to the swinging of a conducting wire, so that the cross arm is lowered, and the installation stability of the cross arm cannot be ensured.

In order to achieve the purpose, the invention adopts the technical scheme that:

an electric power cross arm comprises a pole holding device, an anti-skidding assembly and a cross arm assembly, wherein the pole holding device comprises a left hoop and a right hoop, one side of each of the left hoop and the right hoop is connected with a support arm, one end, close to the left hoop and the right hoop, of each support arm is provided with a first kidney-shaped groove in a penetrating mode, the lower portions of the left hoop and the right hoop are connected through bolts, the upper portions of the left hoop and the right hoop are provided with first clamping grooves, and the inner sides of the left hoop and the right hoop are provided with through grooves; the anti-slip assembly is arranged in the through groove and comprises a cam, the cam is arranged on a connecting shaft, the connecting shaft is movably arranged in the first kidney-shaped groove, clamping plates are arranged at two ends of the connecting shaft, a second clamping groove is formed in the upper portion of each clamping plate, and a connecting screw rod is arranged in each clamping groove, wherein the left end of each connecting screw rod is hinged to the corresponding clamping groove II of the left hoop; the cross arm assembly comprises an upper base plate arranged on the support arm and an insulating porcelain bottle arranged on the upper portion of the base plate, and the cable is fixed on the insulating porcelain bottle.

As a further preference of the technical scheme, guide holes (not shown in the figure) are formed in two sides of the left anchor ear and the right anchor ear, bayonet lock components are arranged in the guide holes and comprise shells, guide rods are arranged in the shells, one ends of the guide rods are connected with pull rings, the other ends of the guide rods are connected with bayonet lock bodies, the bayonet lock bodies are in clearance fit with the guide holes, and one ends of the bayonet lock bodies extend into the first clamping grooves; through set up the bayonet catch subassembly in draw-in groove one side, utilize the bayonet catch body to restrict connecting screw in the logical groove lower part of left staple bolt and right staple bolt, avoided connecting screw's the other end to drop from two upper portions of draw-in groove of cardboard, guaranteed the stability that the holding pole device is connected.

As a further preferred option of the technical scheme, an inclined plane is arranged on one side of the bayonet lock body, a first spring is sleeved outside the guide rod, one end of the first spring is fixedly connected with the bayonet lock body, and the other end of the first spring is connected with the inner wall of the shell; when connecting screw rod installs to logical inslot, after the inclined plane contact of connecting screw rod and bayonet lock body, continue to push down connecting screw rod, the bayonet lock body slides to the right side under the effect on inclined plane, until connecting screw rod card go into logical inslot portion completely after, the bayonet lock body resets under the effect of spring one, will connect the bottom that the screw rod restriction led to the groove, has improved the convenience that the bayonet lock subassembly used.

As a further optimization of the technical scheme, one end, close to the left hoop and the right hoop, of the upper portion of the supporting arm is provided with a second kidney-shaped groove, correction plates are arranged on two sides of the second kidney-shaped groove, the upper portion of the cam is connected with a connecting rod, the connecting rod is in clearance fit with the second kidney-shaped groove, the upper end of the connecting rod is connected with a connecting plate, and when the small diameter of the cam abuts against the outer wall of the electric pole, the upper surface of the connecting plate is flush with the upper surface of the correction plates, the position of the cam can be judged quickly and visually, and therefore whether the anti-skidding assembly is installed in place or not can be judged.

As a further preferred aspect of the present invention, the upper portion of the support arm is provided with a plurality of third slots, the lower portion of the base plate is provided with fastening bolts, the fastening bolts are disposed in the third slots with gaps therebetween, and one end of each fastening bolt is threadedly connected with a nut, the third slots facilitate adjustment of the mounting position of the cross arm assembly, thereby adjusting the distance between adjacent cables, and the detachable cross arm assembly facilitates maintenance of the cross arm.

As a further optimization of the technical scheme, limiting plates are arranged on two sides of the lower portion of the bottom plate, limiting grooves are formed between the limiting plates on two sides, the supporting arm is slidably mounted in the limiting grooves, the limiting grooves limit rotation of the bottom plate, torsion of the cross arm assembly on the supporting arm is avoided when the cable swings, and stability of the cross arm assembly is guaranteed.

As a further optimization of the technical scheme, a damping assembly is arranged on the upper portion of the base plate, the damping assembly comprises an outer ring and an inner ring arranged inside the outer ring, the outer ring is fixedly installed on the base plate, the upper portion of the inner ring is fixedly connected with an upright post, an insulating porcelain bottle is fixedly installed on the upright post, a plurality of grooves are formed in the inner side of the outer ring, a plurality of bosses are arranged on the outer side of the inner ring and arranged inside the grooves, two sides of each boss are connected with a second spring, and the other end of each second spring is connected with the side wall of each groove; when the cable swung, the cable twisted reverse the insulating porcelain bottle production, and traditional insulating porcelain bottle is fixed structure, and the cable is equivalent to rigid connection with insulating porcelain bottle, when the cable amplitude of fluctuation is great, easily causes the cable damage, and damping component allows insulating porcelain bottle to twist reverse at small amplitude within range to possess the reset function, the twisting that insulating porcelain bottle produced when effectively swinging the cable cushions, has the effect of protecting the line, is favorable to reducing the damage of cable.

As a further preference of the technical scheme, the two sides of the bottom plate are provided with the line ejecting assemblies, each line ejecting assembly comprises a rotating plate, the middle part of each rotating plate is rotatably installed on the bottom plate through a pin shaft, one side of each rotating plate is provided with an arc-shaped groove for accommodating an insulating porcelain bottle, the two ends of each rotating plate are both connected with vertical plates, the upper parts of the vertical plates are connected with a support, the inside of each support is rotatably connected with a line ejecting wheel, and cables are arranged on the outer side of the line ejecting wheel and arranged in a V shape by bypassing the inner side of the insulating porcelain bottle; the pulling force to the insulator when being favorable to reducing the cable swing, and when the cable swing, the tight power in top between the take-up pulley of one side and the cable is not hard up the back, and the commentaries on classics board produces and rotates, and the take-up pulley of the other end increases its tight power in top with the cable under the rotation effect of commentaries on classics board, has guaranteed the tight effect in top of cable.

As a further optimization of the technical scheme, one side of the support is rotatably connected with an adjusting screw rod, the adjusting screw rod is in threaded connection with the vertical plate, one end of the adjusting screw rod is provided with a handle, and the adjusting screw rod is convenient for adjusting the position of the wire jacking wheel, so that the tight jacking effect of the wire jacking wheel on the cable is adjusted.

As this technical scheme's further preferred, the bottom plate both sides are equipped with the extension board, and extension board end-to-end connection has the end plate, the end plate inboard is equipped with spring three, and spring three's the other end offsets with the riser, and spring three is favorable to the torsion of commentaries on classics board when buffering the cable swing, is convenient for simultaneously to change the board and twists back fast reset.

The invention has the beneficial effects that:

1) according to the invention, the anti-slip assembly is arranged on the inner side of the pole holding device, and the electric pole is held tightly by utilizing the cam of the anti-slip assembly, so that the phenomenon that the hoop is loosened due to the swinging of the conducting wire after the cross arm is used for a long time is avoided, and the use stability of the cross arm is ensured.

2) Both sides at left staple bolt and right staple bolt have all set up the bayonet lock subassembly, utilize the bayonet lock body will connect the screw rod restriction in the lower part that leads to the groove, have avoided connecting screw rod's the other end to drop from two upper portions of draw-in groove of cardboard, have guaranteed the stability of embracing the pole device and connecting.

3) The upper part of the supporting arm is provided with the correcting structure of the cam, so that the position of the cam can be judged quickly and visually, and whether the anti-skid component is installed in place or not can be judged.

4) Set up the cross arm subassembly and support arm into detachable structure, the maintenance and the change of the cross arm subassembly of being convenient for, and set up the limiting plate in the bottom plate lower part of cross arm subassembly, drive the bottom plate and rotate when having avoided the wire swing effectively, guaranteed the stability of cross arm subassembly.

5) Compared with the traditional rigid connection between the porcelain insulator and the cable, the damping assembly is arranged at the lower part of the porcelain insulator, so that the porcelain insulator is flexibly connected with the cable, the porcelain insulator is allowed to twist within a small amplitude range, the restoring function is realized, the twisting generated by the porcelain insulator when the cable swings is effectively buffered, the wire protecting function is realized, and the damage to the cable is reduced.

6) The top line assemblies are arranged on the two sides of the bottom plate, the positions of the top line wheels of the top line assemblies are adjustable, when the cable swings, the rotating plate rotates after the jacking force between the top line wheel on one side and the cable is loosened, the jacking force between the top line wheel on the other side and the cable is increased under the rotating action of the rotating plate, and the jacking effect of the cable is guaranteed; in addition, set up spring three on the extension board, be favorable to the torsion of buffering cable swing time to changeing the board, be convenient for simultaneously change the board and twist the back and reset fast.

Drawings

FIG. 1 is a diagram of a power cross arm in use according to the present invention.

FIG. 2 is a schematic diagram of an electric cross arm structure according to the present invention.

FIG. 3 is a schematic diagram of a structure of a right hoop in an electric cross arm.

FIG. 4 is a schematic view of the assembly of a cam in an electric cross arm according to the present invention.

FIG. 5 is a partial cross-sectional view of a right hoop of an electric cross arm.

FIG. 6 is an assembly diagram of a cross arm assembly and a top line assembly of an electric cross arm according to the present invention.

FIG. 7 is a schematic structural diagram of a cross arm assembly in an electric cross arm according to the present invention.

FIG. 8 is a schematic structural diagram of a damping assembly in an electric cross arm according to the present invention.

Fig. 9 is a schematic structural diagram of a top line assembly of an electric cross arm.

Fig. 10 is a top view of a cross arm assembly and a top wire assembly of an electrical cross arm according to the present invention.

In the figure: 1. an electric pole; 2. a pole embracing device; 201. a left hoop; 202. a right hoop; 203. a support arm; 204. a bolt; 205. connecting a screw rod; 206. a first clamping groove; 207. a through groove; 208. a first kidney-shaped groove; 209. a second kidney-shaped groove; 210. a waist-shaped groove III; 3. an anti-skid component; 301. a cam; 302. a connecting shaft; 303. clamping a plate; 304. a second clamping groove; 305. a connecting rod; 306. a connecting plate; 307. a correction plate; 4. a bayonet assembly; 401. a housing; 402. a bayonet lock body; 403. a guide bar; 404. a first spring; 405. a pull ring; 5. a cross arm assembly; 501. a base plate; 502. a limiting plate; 503. a column; 504. an insulating porcelain insulator; 505. an extension plate; 506. an end plate; 507. a third spring; 508. a pin shaft; 6. a damping assembly; 601. an outer ring; 602. an inner ring; 603. a groove; 604. a boss; 605. a second spring; 7. a top line assembly; 701. a support; 702. a line jacking wheel; 703. adjusting the screw rod; 704. rotating the plate; 705. a vertical plate; 706. an arc-shaped slot; 8. an electrical cable.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to fig. 1 to 10, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description only, and do not indicate or imply that the devices or elements referred to must have a specific orientation, a specific orientation configuration and operation, and thus, are not to be construed as limiting the present invention.

As shown in fig. 1 to 4, an electric cross arm comprises a pole holding device 2, an anti-slip component 3 and a cross arm component 5, wherein the pole holding device 2 comprises a left hoop 201 and a right hoop 202, one side of the left hoop 201 and one side of the right hoop 202 are both connected with a support arm 203, one end of the support arm 203 close to the left hoop 201 and one end of the right hoop 202 are both provided with a kidney-shaped groove 208 in a penetrating manner, the lower parts of the left hoop 201 and the right hoop 202 are connected through a bolt 204, the upper parts of the left hoop 201 and the right hoop 202 are both provided with a clamping groove 206, and the inner sides of the left hoop 201 and the right hoop 202 are both provided with a through groove 207; the anti-skid component 3 is arranged in the through groove 207, the anti-skid component 3 comprises a cam 301, the cam 301 is arranged on a connecting shaft 302, the connecting shaft 302 is movably arranged in a first kidney-shaped groove 208, clamping plates 303 are arranged at two ends of the connecting shaft 302, a second clamping groove 304 is arranged at the upper part of each clamping plate 303, and a connecting screw 205 is arranged in each second clamping groove 304, wherein the left end of each connecting screw 205 is hinged with the second clamping groove 304 of the left hoop 201, the right end of each connecting screw 205 is movably clamped in the second clamping groove 304 of the right hoop 202, the upper parts of the left hoop 201 and the right hoop 202 are fastened through nuts, and when the upper parts of the left hoop 201 and the right hoop 202 are fastened, the small-diameter outer edge of the cam 301 abuts against the outer wall of the electric pole 1; the cross arm assembly 5 comprises a bottom plate 501 arranged on the support arm 203 and an insulating porcelain bottle 504 arranged on the upper part of the bottom plate 501, and the cable 8 is fixed on the insulating porcelain bottle 504.

As shown in fig. 5, in this embodiment, guide holes (not shown in the figure) are formed in both sides of the left anchor ear 201 and the right anchor ear 202, a bayonet lock assembly 4 is arranged in the guide holes, the bayonet lock assembly 4 includes an outer shell 401, a guide rod 403 is arranged in the outer shell 401, one end of the guide rod 403 is connected with a pull ring 405, the other end of the guide rod 403 is connected with a bayonet lock body 402, the bayonet lock body 402 is in clearance fit with the guide holes, and one end of the bayonet lock body 402 extends into the first bayonet lock 206; by arranging the clamping pin component 4 on one side of the first clamping groove 206 and limiting the connecting screw 205 at the lower part of the through groove 207 of the left hoop 201 and the right hoop 202 by using the clamping pin body 402, the other end of the connecting screw 205 is prevented from falling off from the upper part of the second clamping groove 304 of the clamping plate 303, and the stability of connection of the holding pole device 2 is ensured.

As shown in fig. 5, in this embodiment, an inclined surface is disposed on one side of the bayonet body 402, a first spring 404 is sleeved outside the guide rod 403, one end of the first spring 404 is fixedly connected with the bayonet body 402, and the other end of the first spring 404 is connected with the inner wall of the housing; when the connecting screw 205 is installed in the through groove 207, after the connecting screw 205 is in contact with the inclined surface of the bayonet lock body 402, the connecting screw 205 is continuously pressed downwards, the bayonet lock body 402 slides towards the right side under the action of the inclined surface until the connecting screw 205 is completely clamped into the through groove 207, the bayonet lock body 402 resets under the action of the first spring 404, the connecting screw 205 is limited at the bottom of the through groove 207, and the use convenience of the bayonet lock assembly 4 is improved.

As shown in fig. 2 and 4, in this embodiment, a second kidney-shaped groove 209 is disposed at one end of the upper portion of the support arm 203 close to the left hoop 201 and the right hoop 202, correction plates 307 are disposed at two sides of the second kidney-shaped groove 209, the upper portion of the cam 301 is connected with a connecting rod 305, the connecting rod 305 is in clearance fit with the second kidney-shaped groove 209, the upper end of the connecting rod 305 is connected with a connecting plate 306, and when the minor diameter of the cam 301 abuts against the outer wall of the electric pole 1, the upper surface of the connecting plate 306 is flush with the upper surface of the correction plate 307, so as to facilitate rapid and intuitive judgment of the position of the cam 301, and thus judge whether the anti-skid component 3 is installed in place.

As shown in fig. 3-4, in the present embodiment, the upper portion of the supporting arm 203 is provided with a plurality of three slots 210, the lower portion of the base plate 501 is provided with fastening bolts 204, the fastening bolts 204 are arranged in the three slots 210 with gaps, and one end of the fastening bolt 204 is screwed with a nut, the three slots 210 facilitate adjusting the installation position of the cross arm assembly 5, thereby adjusting the distance between adjacent cables 8, and the cross arm assembly 5 is detachably connected to facilitate cross arm maintenance.

As shown in fig. 6, in the present embodiment, two sides of the lower portion of the bottom plate 501 are provided with limiting plates 502, a limiting groove is formed between the limiting plates 502 on the two sides, the supporting arm 203 is slidably mounted in the limiting groove, the limiting groove limits the rotation of the bottom plate 501, the cross arm assembly 5 is prevented from twisting on the supporting arm 203 when the cable 8 swings, and the stability of the cross arm assembly 5 is ensured.

As shown in fig. 6-8, in this embodiment, a damping assembly 6 is disposed on an upper portion of the bottom plate 501, the damping assembly 6 includes an outer ring 601 and an inner ring 602 disposed inside the outer ring 601, wherein the outer ring 601 is fixedly mounted on the bottom plate 501, a column 503 is fixedly connected to an upper portion of the inner ring 602, an insulator 504 is fixedly mounted on the column 503, a plurality of grooves 603 are disposed on an inner side of the outer ring 601, a plurality of bosses 604 are disposed on an outer side of the inner ring 602, the bosses 604 are disposed inside the grooves 603, two sides of the bosses 604 are connected to two springs 605, and the other ends of the springs 605 are connected to side walls of the grooves 603; when cable 8 swings, cable 8 twists reverse insulating porcelain bottle 504 production, traditional insulating porcelain bottle 504 is fixed structure, cable 8 is equivalent to rigid connection with insulating porcelain bottle 504, when cable 8 amplitude of fluctuation is great, easily cause cable 8 to damage, and damping component 6 allows insulating porcelain bottle 504 to twist reverse in the small amplitude range, and possess the reset function, the torsion that insulating porcelain bottle 504 produced when effectively swinging cable 8 cushions, the effect of protecting the line has, be favorable to reducing cable 8's damage.

As shown in fig. 6 and fig. 9 to 10, in this embodiment, two sides of the bottom plate 501 are provided with the top line assemblies 7, each top line assembly 7 includes a rotating plate 704, the middle part of the rotating plate 704 is rotatably mounted on the bottom plate 501 through a pin 508, one side of the rotating plate 704 is provided with an arc-shaped groove 706 for accommodating the insulating porcelain bottle 504, two ends of the rotating plate 704 are both connected with vertical plates 705, the upper part of each vertical plate 705 is connected with a support 701, the inside of the support 701 is rotatably connected with a top line wheel 702, and the cable 8 is arranged outside the top line wheel 702 and bypasses the inside of the insulating porcelain bottle 504 to be arranged in a V shape; the pulling force to the porcelain insulator 504 when being favorable to reducing the cable 8 swing, and when the cable 8 swing, the tight back in top between the take-up pulley 702 of one side and the cable 8 is not hard up, changes board 704 and produces the rotation, and the take-up pulley 702 of the other end increases its tight power in top with the cable 8 under the rotation effect of changeing board 704, has guaranteed the tight effect in top of cable 8.

As shown in fig. 9, in this embodiment, an adjusting screw 703 is rotatably connected to one side of the bracket 701, the adjusting screw 703 is in threaded connection with the vertical plate 705, a handle is disposed at one end of the adjusting screw 703, and the adjusting screw 703 facilitates adjusting the position of the wire ejecting wheel 702, so as to adjust the tightening effect of the wire ejecting wheel 702 on the cable 8.

As shown in fig. 6, in this embodiment, extension plates 505 are disposed on two sides of the bottom plate 501, an end plate 506 is connected to a tail end of the extension plate 505, a spring three 507 is disposed inside the end plate 506, and another end of the spring three 507 abuts against a vertical plate 705, where the spring three 507 is beneficial to buffering the torsion of the rotating plate 704 when the cable 8 swings, and is also convenient for the rotating plate 704 to quickly return after torsion.

During the use, install left staple bolt 201 and right staple bolt 202 in pole 1 upper end, and utilize bolt 204 to fasten the lower part of left staple bolt 201 and right staple bolt 202, then utilize connecting screw 205 to connect the antiskid unit 3 of left staple bolt 201 and right staple bolt 202, the antiskid unit 3 of both sides is connected the back, the path outer fringe of the cam 301 of antiskid unit 3 offsets with the outer wall of pole 1, whether parallel and level of connecting plate 306 and correcting plate 307 is observed to the accessible, come the deflection angle of quick judgement cam 301 path, when cam 301 is not path and pole 1 offsets, the accessible rotates the mode of connecting plate 306, the deflection angle of adjustment cam 301.

After the anti-slip assembly 3 is installed, when the holding pole device 2 slides up and down, friction force exists between the cam 301 and the electric pole 1, the cam 301 rotates around the connecting shaft 302 under the action of the friction force, and the distance between the cams 301 on the two sides is reduced, so that the clamping force of the cam 301 on the electric pole 1 is increased, the holding pole device 2 is prevented from sliding up and down, and the stability of the cross arm is guaranteed.

When the cable 8 swings under the action of external force such as wind power, the cable 8 twists reverse the insulating porcelain bottle 504, the damping assembly 6 allows the insulating porcelain bottle 504 to twist within a small amplitude range, and the damping assembly has a reset function, effectively buffers the twisting generated by the insulating porcelain bottle 504 when the cable 8 swings, has a wire protection function, and is beneficial to reducing the damage of the cable 8.

Meanwhile, the top line assembly 7 arranges the cable 8 in a V-shaped form on the cross arm, which is beneficial to reducing the pulling force on the insulating porcelain bottle 504 when the cable 8 swings, and when the cable 8 swings, after the jacking force between the top line wheel 702 on one side and the cable 8 is loosened, the rotating plate 704 rotates, the top line wheel 702 on the other end increases the jacking force between the top line wheel and the cable 8 under the rotating action of the rotating plate 704, so that the jacking effect of the cable 8 is ensured, in addition, a spring III 507 is arranged on the extension plate 505, which is beneficial to buffering the torsion of the rotating plate 704 when the cable 8 swings, and meanwhile, the rotating plate 704 can be quickly reset after being convenient to twist.

The foregoing is merely illustrative and explanatory of the present invention and various modifications, additions or substitutions may be made to the specific embodiments described by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. An electric power cross arm comprises a pole holding device, an anti-skidding assembly and a cross arm assembly, wherein the pole holding device comprises a left hoop and a right hoop, one side of each of the left hoop and the right hoop is connected with a support arm, one end, close to the left hoop and the right hoop, of each support arm is provided with a first kidney-shaped groove in a penetrating mode, the lower portions of the left hoop and the right hoop are connected through bolts, the upper portions of the left hoop and the right hoop are provided with first clamping grooves, and the inner sides of the left hoop and the right hoop are provided with through grooves; the anti-skidding assembly is arranged in the through groove and comprises a cam, the cam is arranged on a connecting shaft, the connecting shaft is movably arranged in the first kidney-shaped groove, clamping plates are arranged at two ends of the connecting shaft, a clamping groove II is arranged at the upper part of each clamping plate, and a connecting screw rod is arranged in each clamping groove II; the cross arm assembly comprises an upper base plate arranged on the support arm and an insulating porcelain bottle arranged on the upper portion of the base plate, and the cable is fixed on the insulating porcelain bottle.

2. The electric cross arm as claimed in claim 1, wherein guide holes are formed in two sides of the left anchor ear and the right anchor ear, a bayonet lock assembly is arranged in each guide hole and comprises an outer shell, a guide rod is arranged in the outer shell, one end of the guide rod is connected with a pull ring, the other end of the guide rod is connected with a bayonet lock body, the bayonet lock body is in clearance fit with the guide holes, and one end of the bayonet lock body extends into the first clamping groove.

3. The electric cross arm as claimed in claim 2, wherein one side of the bayonet body is provided with an inclined surface, a first spring is sleeved outside the guide rod, one end of the first spring is fixedly connected with the bayonet body, and the other end of the first spring is connected with the inner wall of the shell.

4. An electric cross arm as claimed in claim 1, wherein the upper part of the support arm has a second kidney-shaped slot at one end near the left and right hoops, correction plates are arranged at two sides of the second kidney-shaped slot, the upper part of the cam is connected with a connecting rod, the connecting rod is in clearance fit with the second kidney-shaped slot, the upper end of the connecting rod is connected with a connecting plate, and when the small diameter of the cam is abutted against the outer wall of the electric pole, the upper surface of the connecting plate is flush with the upper surface of the correction plates.

5. An electric cross arm as claimed in claim 1, wherein the upper part of the supporting arm is provided with a plurality of three kidney-shaped slots, the lower part of the base plate is provided with fastening bolts, the fastening bolts are arranged in the three kidney-shaped slots at intervals, and one end of each fastening bolt is connected with a nut in a threaded manner.

6. An electric cross arm as claimed in claim 5, wherein the bottom plate is provided with two side limiting plates at two sides of the lower part thereof, a limiting groove is formed between the two side limiting plates, and the supporting arm is slidably mounted in the limiting groove.

7. An electric cross arm according to any one of claims 1 to 6, wherein a damping component is arranged on the upper portion of the base plate, the damping component comprises an outer ring and an inner ring arranged inside the outer ring, the outer ring is fixedly arranged on the base plate, a stand column is fixedly connected to the upper portion of the inner ring, an insulating porcelain bottle is fixedly arranged on the stand column, a plurality of grooves are formed in the inner side of the outer ring, a plurality of bosses are arranged on the outer side of the inner ring and arranged inside the grooves, two sides of each boss are connected with a second spring, and the other end of each second spring is connected with the side wall of each groove.

8. The electric cross arm as claimed in claim 7, wherein the two sides of the bottom plate are provided with wire pushing assemblies, each wire pushing assembly comprises a rotating plate, the middle part of the rotating plate is rotatably mounted on the bottom plate through a pin shaft, one side of the rotating plate is provided with an arc-shaped groove for accommodating an insulating porcelain bottle, two ends of the rotating plate are connected with vertical plates, the upper parts of the vertical plates are connected with brackets, the brackets are rotatably connected with wire pushing wheels, and cables are arranged on the outer sides of the wire pushing wheels and arranged in a V shape by bypassing the inner sides of the insulating porcelain bottles.

9. The electric cross arm as claimed in claim 8, wherein an adjusting screw is rotatably connected to one side of the bracket and is in threaded connection with the vertical plate, and a handle is provided at one end of the adjusting screw.

10. The electric cross arm as claimed in claim 8, wherein the bottom plate is provided with extension plates at both sides, the end of the extension plate is connected with an end plate, a third spring is arranged inside the end plate, and the other end of the third spring abuts against the vertical plate.