CN114718367A

CN114718367A - Electric power cross arm

Info

Publication number: CN114718367A
Application number: CN202210478359.4A
Authority: CN
Inventors: 刘红星; 刘靖仕; 刘云波
Original assignee: Zhejiang Heli Power Facilities Co ltd
Current assignee: Zhejiang Heli Power Facilities Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-07-08
Anticipated expiration: 2042-05-05
Also published as: CN114718367B

Abstract

The invention relates to the technical field of electric power, in particular to an electric power cross arm which comprises a fixed disc, wherein a fixing mechanism fixed on an electric pole is arranged on the fixed disc, a plurality of circular ring grooves are formed in the lower part of the fixed disc and are coaxially arrayed, gear rings are arranged on the inner walls of the circular ring grooves, gears are meshed with the gear rings, the bottoms of the gears are connected with a linear-to-circular motion mechanism through rotating shafts, the bottoms of the linear-to-circular motion mechanism are connected with a first sliding plate, and the tops of the gears are locked with the tops of the circular ring grooves through locking mechanisms; the bottom of the first sliding plate is provided with an electric telescopic rod, and the bottom of the electric telescopic rod is provided with a U-shaped sliding plate. The invention provides an electric power cross arm which can avoid bird nesting, can clear ice and snow on an electric power cable in a snowy weather and can effectively tighten a lead after the lead is heated.

Description

Electric power cross arm

Technical Field

The invention relates to the technical field of electric power, in particular to an electric power 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 so as to support a conducting wire and a lightning conductor and keep a certain safety distance according to regulations, and is an important component part in the pole tower. The cross arm can be divided into a straight cross arm, a corner cross arm and a strain cross arm according to the purpose. The tension cross arm bears the tension difference of the lead besides the vertical and horizontal loads of the lead.

Chinese patent with application number CN201620199803.9 discloses a reinforced structure electric wire cross arm, which belongs to the technical field of electric power equipment and consists of a vertical reinforcing plate, a U-shaped bolt mounting hole, a horizontal reinforcing plate, a telegraph pole clamping hole, a bracket mounting hole, a clamping lug and a fastening hole. The vertical reinforcing plate and the horizontal reinforcing plate are of an integral direct structure, the U-shaped bolt mounting hole is formed in the vertical reinforcing plate surface, the telegraph pole clamping hole, the support mounting hole and the clamping lug piece are formed in the horizontal reinforcing plate surface, and the fastening hole is formed in the clamping lug piece.

Although the above documents can avoid bird nesting and improve certain strength, the whole wind-proof and snow-proof capability is poor, the above documents cannot deal with severe environment and cannot clear ice and snow on the wire; in areas with high temperature in summer, the extension amount generated after the wires are heated is large, so that the insulators on the cross arms cannot effectively tension the wires, and the safety of the power transmission line is also adversely affected.

Disclosure of Invention

The invention aims to provide an electric cross arm which can avoid bird nesting, can clear ice and snow on an electric cable in a snowy weather and can effectively tighten a lead after the lead is heated.

In order to achieve the purpose, the invention adopts the following technical scheme: an electric cross arm comprises a fixed disc, wherein a fixing mechanism fixed on an electric pole is arranged on the fixed disc, a plurality of circular ring grooves are formed in the lower portion of the fixed disc and are coaxially arrayed, gear rings are arranged on the inner walls of the circular ring grooves, gears are meshed with the gear rings, the bottoms of the gears are connected with a linear-to-circular motion mechanism through rotating shafts, the bottoms of the linear-to-circular motion mechanism are connected with a first sliding plate, and the tops of the gears are locked with the tops of the circular ring grooves through locking mechanisms; the electric telescopic rod is arranged at the bottom of the first sliding plate, the U-shaped sliding plate is arranged at the bottom of the electric telescopic rod, a square tube is sleeved outside the electric telescopic rod, the square tube is connected with the inner wall of the circular groove in a sliding mode through a sliding block, the inner wall of the square tube is connected with the first sliding plate and the U-shaped sliding plate in a sliding mode, the inner wall of one side, opposite to the U-shaped sliding plate, of the U-shaped sliding plate is connected with a rotary table in a rotating mode, a fixed shaft is connected to the edge of one side, opposite to the rotary table, of the rotary table, the fixed shaft is hinged to the electric telescopic rod, a through groove is formed in one side wall of the square tube, one end of the rotary table is locked with the U-shaped sliding plate through an electromagnetic bolt, a hollow connecting shaft penetrating through the through groove is fixed to the other end of the rotary table through the electromagnetic bolt, a rotating tube is fixedly connected to a rotating tube, and the bottom of the rotating tube is connected to the cross arm through a clamping mechanism; the first sliding plate and the U-shaped sliding plate are locked with the inner wall of the square tube through a limiting mechanism; the clamping mechanism is connected with the fixed shaft through an unlocking rope for controlling the clamping mechanism to unlock;

the electromagnetic bolts corresponding to the rotary plate and the connecting shaft in one of the square tubes are controlled to contract, then the electric telescopic rod is controlled to contract, so that the cross arm and the rotating tube are unlocked, then the limiting mechanism corresponding to the U-shaped sliding plate is controlled to unlock, then the electric telescopic rod is controlled to contract to a position where the rotating tube can touch the top of the fixed plate when rotating, then the limiting mechanism corresponding to the U-shaped sliding plate is controlled to lock, then the electric telescopic rod is controlled to extend to recover to the lowest end of the rotary plate, then the electromagnetic bolts corresponding to the connecting shaft are controlled to extend, so that the rotary plate and the connecting shaft are locked, and then the electric telescopic rod is controlled to contract, so that the rotating tube rotates, and the top of the fixed plate is knocked.

The invention has the following beneficial effects:

1. according to the invention, the electromagnetic bolt of the locking mechanism is controlled to contract to unlock the gear and the circular groove, then the electromagnetic bolt corresponding to the first sliding plate is controlled to contract to unlock the first sliding plate and the square pipe, then the electric telescopic rod is controlled to repeatedly extend and contract to rotate the rotating cylinder and drive the rotating shaft to rotate, the rotating shaft rotates and drives the gear to rotate, so that under the action of the gear and the toothed ring, the gear rotates and drives the lower mechanism to rotate to a proper position along the toothed ring, and the action of the corner cross arm with various corners can be realized.

2. The electromagnetic bolts corresponding to all the U-shaped sliding plates are controlled to contract, and then the electric telescopic rod extends or contracts, so that the U-shaped sliding plates are driven to move up and down, the U-shaped sliding plates move and drive the connecting shaft to move up and down, and the length of a cable between the cross arm and the supporting insulators arranged on the side walls of the square tubes is changed; thereby realizing the adjustment of the tightness of the cable.

3. The device comprises a rotating plate, an electric telescopic rod, a U-shaped sliding plate, an electromagnetic bolt, a connecting shaft, an electromagnetic bolt, a connecting rod, an electric telescopic rod, a rotating pipe, a rotating rod, an electric telescopic rod, a rotating rod, a connecting rod and a control circuit.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of a fixing plate according to the present invention;

FIG. 3 is a sectional view of the structure of the fixing plate of the present invention;

FIG. 4 is a schematic view of the connection between the fixed plate and the square tube structure of the present invention;

FIG. 5 is a schematic view of the connection of the linear-to-circular motion mechanism of the present invention;

FIG. 6 is an enlarged view of portion A of FIG. 5 according to the present invention;

FIG. 7 is a schematic view of a rotary drum according to the present invention;

FIG. 8 is a schematic view of the structural connection between the square tube and the rotating tube according to the present invention;

FIG. 9 is an enlarged view of portion B of FIG. 8 according to the present invention;

FIG. 10 is an enlarged view of the portion C of FIG. 8 according to the present invention;

fig. 11 is an enlarged view of the structure of part D in fig. 8 according to the present invention.

In the figure: 1. fixing the disc; 2. a circular groove; 3. a toothed ring; 4. a gear; 401. a rotating shaft; 5. a linear-to-circular motion mechanism; 501. a cylinder; 502. a slider; 503. a rotating cylinder; 6. a first sliding plate; 7. an electric telescopic rod; 8. a "U" shaped slide plate; 9. a square tube; 10. a turntable; 11. a fixed shaft; 12. a through groove; 13. a connecting shaft; 14. rotating the tube; 15. a cross arm; 16. a rope; 17. a slider; 18. a first arc-shaped fixed clip; 19. a second arc-shaped fixing piece; 20. a chute; 21. a spiral guide groove; 2101. a first helical groove; 2102. a first straight line groove; 2103. a second linear groove; 22. a guide post; 23. a slide bar; 24. a post insulator; 25. a clamping groove; 26. clamping the column; 27. a guide wheel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 11, an electric cross arm comprises a fixed disk 1, a fixing mechanism fixed on an electric pole is arranged on the fixed disk 1, a plurality of circular grooves 2 are arranged on the lower portion of the fixed disk 1 in a coaxial array, a toothed ring 3 is arranged on the inner wall of each circular groove 2, a gear 4 is meshed with each toothed ring 3, the bottom of each gear 4 is connected with a linear-to-circular motion mechanism 5 through a rotating shaft 401, the bottom of each linear-to-circular motion mechanism 5 is connected with a first sliding plate 6, and the top of each gear 4 is locked with the top of each circular groove 2 through a locking mechanism; an electric telescopic rod 7 is arranged at the bottom of the first sliding plate 6, a U-shaped sliding plate 8 is arranged at the bottom of the electric telescopic rod 7, a square tube 9 is sleeved outside the electric telescopic rod 7, the square tube 9 is in sliding connection with the inner wall of the circular groove 2 through a sliding block 17, the inner wall of the square tube 9 is in sliding connection with the first sliding plate 6 and the U-shaped sliding plate 8, the inner wall of one side, opposite to the U-shaped sliding plate 8, of the U-shaped sliding plate 8 is rotatably connected with a rotary table 10, a fixed shaft 11 is connected with the edge of one side, opposite to the rotary table 10, the fixed shaft 11 is hinged with the electric telescopic rod 7, a through groove 12 is formed in one side wall of the square tube 9, one end of the rotary table 10 is locked with the U-shaped sliding plate 8 through an electromagnetic bolt, a hollow connecting shaft 13 penetrating through the through groove 12 is fixed at the other end of the rotary table 10 through the electromagnetic bolt, a rotating tube 14 is fixedly connected with a cross arm 15 through a clamping mechanism at the bottom of the rotating tube 14; the first sliding plate 6 and the U-shaped sliding plate 8 are locked with the inner wall of the square tube 9 through a limiting mechanism; the clamping mechanism is connected with the fixed shaft 11 through an unlocking rope 16 for controlling the clamping mechanism to unlock; the corner cross arm with various angles can be realized by arranging the circular ring groove 2.

The locking mechanism comprises slots which are arranged on the top wall of the circular groove 2 and distributed in a circumferential array, and electromagnetic bolts are arranged on the top of the axis of the gear 4; according to the invention, the locking mechanism is arranged, and the electromagnetic bolt is controlled to be powered on or off, so that the gear 4 and the top wall of the circular groove 2 are locked, and further, the fixed connection is formed.

The limiting mechanism comprises a limiting groove which is arranged on one side wall of the square tube 9 and is in a linear array, and electromagnetic bolts matched with the limiting groove are arranged on the U-shaped sliding plate 8 and the first sliding plate 6; according to the invention, the position of the first sliding plate 6 and the position of the connecting shaft 13 are limited by arranging the limiting groove and the electromagnetic bolt and controlling the insertion and matching between the electromagnetic bolt and the limiting groove.

The fixing mechanism comprises first arc-shaped fixing clamping pieces 18 symmetrically arranged at the lower part of the fixing disc 1, second arc-shaped fixing pieces 19 are symmetrically arranged between the two first arc-shaped fixing clamping pieces 18, the second arc-shaped fixing pieces 19 are connected with the fixing disc 1 in a sliding manner, sliding grooves 20 in sliding fit with the second arc-shaped fixing pieces 19 are formed in the fixing disc 1, and the first arc-shaped fixing clamping pieces 18 are fixedly connected with the second arc-shaped fixing pieces 19 through fixing bolts; during the installation process, the first arc-shaped fixing clamping piece 18 and the second arc-shaped fixing piece 19 are firstly placed on two sides of the electric pole, the second arc-shaped fixing piece 19 is attached to the electric pole by sliding the second arc-shaped fixing piece 19, and then the first arc-shaped fixing clamping piece 18 and the second arc-shaped fixing piece 19 are clamped and fixed at the top of the electric pole through bolts; thereby, the fixing of the fixing mechanism and the electric pole can be completed.

The linear-to-circular motion mechanism 5 comprises a cylinder 501, a rotating shaft 401 is rotatably connected with the cylinder 501 and penetrates through the top of the cylinder 501, the outer side wall of the cylinder 501 is slidably connected with the inner wall of the circular groove 2 through a sliding block 502, and one end, penetrating through the top of the cylinder 501, of the rotating shaft 401 is fixedly connected with a rotating cylinder 503; by arranging the rotating cylinder 503, when the rotating cylinder 503 rotates, the rotating cylinder 503 rotates and drives the rotating shaft 401 to rotate, and the rotating shaft 401 rotates and drives the gear 4 to rotate, so that under the action of the gear 4 and the gear ring 3, the gear 4 rotates and drives the lower mechanism to rotate along the gear ring 3, and the position of the gear 4 is changed.

A spiral guide groove 21 is formed in the outer wall of the rotating cylinder 503, a guide post 22 is arranged in the spiral guide groove 21, one end, far away from the spiral guide groove 21, of the guide post 22 is connected with a sliding rod 23 in a sliding mode through a spring, and the sliding rod 23 penetrates through the bottom of the cylinder 501 and is connected with the cylinder 501 in a sliding mode; a first sliding plate 6 is fixed at one end of the sliding rod 23 far away from the cylinder 501; according to the invention, by arranging the spiral guide groove 21, when the electric telescopic rod 7 pushes the first sliding plate 6 to move upwards and simultaneously pushes the sliding rod 23 to move upwards, due to the arrangement of the spiral guide groove 21, and the sliding rod 23 only can move up and down, the guide post 22 pushes the rotating cylinder 503 to rotate, so that the linear-to-circular motion is realized, and further, the position of the square pipe 9 is changed by controlling the extension and retraction of the electric telescopic rod 7.

The spiral guide groove 21 comprises two circles of first spiral grooves 2101 which are spirally upward, the bottom ends of the first spiral grooves 2101 are connected with the middle points of the first spiral grooves 2101 through first straight line grooves 2102, the top ends of the first straight line grooves 2102 are connected with the middle points of the first spiral grooves 2101 through second straight line grooves 2103, the depth of the bottom ends of the first spiral grooves 2101 is smaller than that of the bottom ends of the first straight line grooves 2102, and the depth of the top ends of the first straight line grooves 2102 is smaller than that of the middle points of the first spiral grooves 2101; the depth of the midpoint of the first spiral groove 2101 is greater than the depth of the bottom end of the second linear groove 2103, and the depth of the top end of the second linear groove 2103 is greater than the depth of the top end of the first spiral groove 2101; according to the invention, the first spiral groove 2101 and the first straight line groove 2102 are arranged in the head-to-tail depth, so that the guide column 22 can be smoothly switched among the first spiral groove 2101, the first straight line groove 2102 and the second straight line groove 2103; and further realize the positive and negative rotation of the gear.

A post insulator 24 is arranged on the cross arm 15, and the post insulator 24 is arranged on the side wall of the square tube 9; preferably, the post insulators 24 of the side walls of the square tube 9 may be fixedly attached to the fixed plate 1, so that the position of the square tube 9 can be moved by controlling the expansion and contraction of the electric telescopic rod 7 even after the rotating tube 14 is pulled out from the cross arm 15.

The clamping mechanism comprises a clamping groove 25 formed in the cross arm 15, a clamping column 26 is inserted in the clamping groove 25, the clamping column 26 is connected with the side wall of the rotating tube 14 in a sliding mode, the clamping column 26 penetrates through the side wall of the rotating tube 14, the clamping column 26 is connected with the inner wall of the rotating tube 14 through a spring, a guide wheel 27 used for guiding the rope 16 is arranged on the inner wall of the rotating tube 14, and the rope 16 penetrates through the connecting shaft 13 and the rotary table 10 to be connected with the fixed shaft 11; through setting up clamping mechanism, through the shrink of control electric telescopic handle 7 to can drive joint post 26 extrusion spring through rope 16, thereby make joint post 26 extract from joint groove 25, and then can realize the unblock of cross arm 15 and rotating-tube 14.

It should be emphasized that, in the initial state of the present invention, an upward extending gap is left at the top of the electric telescopic rod 7, and a downward extending gap is left at the bottom of the electric telescopic rod 7, that is, at this time, the electromagnetic bolts corresponding to the first sliding plate 6 and the connecting shaft 13 are all inserted into the limiting groove.

When the locking mechanism is used, firstly, the space between the gear 4 and the circular groove 2 is unlocked by controlling the contraction of the electromagnetic bolt of the locking mechanism, then the first sliding plate 6 and the square pipe 9 are unlocked by controlling the contraction of the electromagnetic bolt corresponding to the first sliding plate 6, then the electric telescopic rod 7 is controlled to repeatedly extend and contract, the electric telescopic rod 7 extends to push the first sliding plate 6 to move upwards and simultaneously push the sliding rod 23 and the guide post 22 to move upwards, and due to the arrangement of the spiral guide groove 21, the sliding rod 23 can only move upwards and downwards, so that the guide post 22 pushes the rotating cylinder 503 to rotate; the rotating cylinder 503 rotates and drives the rotating shaft 401 to rotate, the rotating shaft 401 rotates and drives the gear 4 to rotate, so that under the action of the gear 4 and the toothed ring 3, the gear 4 rotates and drives the lower mechanism to rotate along the toothed ring 3, the position of the gear 4 is changed, the three square pipes 9 are moved to proper positions according to the same mode, then the electromagnetic bolts corresponding to the first sliding plate 6 and the electromagnetic bolts of the locking mechanism are controlled to extend, so that the first sliding plate 6 is locked with the square pipes 9, and the gear 4 is locked with the top wall of the circular groove 2, and further fixed connection is formed; then placing the first arc-shaped fixing clamping piece 18 and the second arc-shaped fixing piece 19 on two sides of the electric pole, enabling the second arc-shaped fixing piece 19 to be attached to the electric pole by sliding the second arc-shaped fixing piece 19, and then clamping and fixing the first arc-shaped fixing clamping piece 18 and the second arc-shaped fixing piece 19 on the top of the electric pole through bolts; thereby completing the fixation of the fixing mechanism and the electric pole; then, the clamping mechanisms on the two sides of the rotating tube 14 are pressed to enable the clamping columns 26 to be contracted into the rotating tube 14, and then the rotating tube 14 is in butt joint with the cross arm 15, so that the installation of the whole electric cross arm can be completed.

When the tightness between electric pole cables needs to be adjusted, the U-shaped sliding plates 8 and the square tubes 9 are unlocked by controlling the electromagnetic bolts of the limiting mechanisms corresponding to all the U-shaped sliding plates 8 to contract, because the initial position of the fixed shaft 11 is located at the lowest end of the rotary table 10, the rotary table 10 and the U-shaped sliding plates 8 are in a locking state, and the rotary table 10 and the connecting shafts 13 are in a locking state, under the action of the gravity of the rotary tube 14 and the gravity of the cables, the rotary table 10 cannot rotate due to the extension and contraction of the electric telescopic rod 7, and then the electric telescopic rod 7 extends or contracts, so that the U-shaped sliding plates 8 are driven to move up and down, the U-shaped sliding plates 8 move and drive the connecting shafts 13 to move up and down, and the length of the cables between the cross arm 15 and the side walls of the square tubes 9 provided with the post insulators 24 is changed; it should be emphasized that, when the electric telescopic rod 7 extends, the length of the cable between the electric poles is reduced, and the length of the cable between the two post insulators 24 is increased, and when the electric telescopic rod 7 extends, the length of the cable between the electric poles is increased, and the length of the cable between the two post insulators 24 is reduced, so that the tightness of the cable is adjusted.

When birds need to be driven, the electromagnetic bolts corresponding to the rotary disc 10 and the connecting shaft 13 in one square tube 9 are controlled to contract, so that the rotary disc 10 is unlocked with the U-shaped sliding plate 8 and the connecting shaft 13 at the same time, then the electric telescopic rod 7 is controlled to contract, as the initial position of the bottom of the electric telescopic rod 7 is located at the lowest end of the rotary disc 10, the electric telescopic rod 7 contracts to drive the fixed shaft 11 and the rotary disc 10 to rotate, the fixed shaft 11 rotates to wind the rope 16, the rope 16 is further tightened, the rope 16 pulls the clamping column 26 to contract and scratch into the rotating tube 14, further the cross arm 15 and the rotating tube 14 are unlocked, then the electromagnetic bolts corresponding to the U-shaped sliding plate 8 are controlled to contract, the U-shaped sliding plate 8 and the square tube 9 are unlocked, the electric telescopic rod 7 is controlled to continuously contract to a distance which can touch the top of the fixed disc 1 when the rotating tube 14 rotates, the electric telescopic rod 7 drives the U-shaped sliding plate 8 to move upwards by continuing to contract, and the U-shaped sliding plate 8 moves upwards to drive the rotating pipe 14 to move upwards, so that the rotating pipe 14 is pulled out of the cross arm 15; then the electromagnetic bolt corresponding to the U-shaped sliding plate 8 is controlled to extend to lock the U-shaped sliding plate 8 and the square tube 9, the electric telescopic rod 7 is controlled to extend to recover to the lowest end of the rotary plate 10, the electric telescopic rod 7 extends, and the clamping column 26 is popped out, so that the rotating tube 14 is limited to be matched with the cross arm 15 in an inserted manner; then the electromagnetic bolt that control connecting axle 13 corresponds extends, makes locking between carousel 10 and the connecting axle 13, then control electric telescopic handle 7 shrink, and electric telescopic handle 7 will drive rotating tube 14 and upwards remove to make rotating tube 14 rotate, and then strike the top, thereby reach the purpose of driving birds.

When ice and snow need to be cleaned, the electromagnetic bolts corresponding to the rotary disc 10 and the connecting shaft 13 in one of the square tubes 9 are controlled to contract, so that the rotary disc 10 is unlocked with the U-shaped sliding plate 8 and the connecting shaft 13 at the same time, then the electric telescopic rod 7 is controlled to contract, as the initial position of the bottom of the electric telescopic rod 7 is positioned at the lowest end of the rotary disc 10, the electric telescopic rod 7 contracts to drive the fixed shaft 11 and the rotary disc 10 to rotate, the fixed shaft 11 rotates to wind the rope 16, the rope 16 is further tightened, the rope 16 pulls the clamping column 26 to contract and scratch into the rotating tube 14, further the cross arm 15 and the rotating tube 14 are unlocked, then the electromagnetic bolts corresponding to the U-shaped sliding plate 8 are controlled to contract, so that the U-shaped sliding plate 8 and the square tubes 9 are unlocked, the electric telescopic rod 7 is controlled to continuously contract to a position where the rotating tube 14 can be pulled out from the cross arm 15, and the electric telescopic rod 7 is continuously contracted, the electric telescopic rod 7 drives the U-shaped sliding plate 8 to move upwards, and the U-shaped sliding plate 8 moves upwards to drive the rotating pipe 14 to move upwards, so that the rotating pipe 14 is pulled out of the cross arm 15; then the electromagnetic bolt corresponding to the U-shaped sliding plate 8 is controlled to extend to lock the U-shaped sliding plate 8 and the square tube 9, the electric telescopic rod 7 is controlled to extend to recover to the lowest end of the rotary table 10, the electric telescopic rod 7 extends, and the clamping column 26 is ejected out, so that the rotary tube 14 and the cross arm 15 are prevented from being locked again; then the extension of the electromagnetic bolt corresponding to the connecting shaft 13 is controlled, the rotating disc 10 and the connecting shaft 13 are locked, then the electric telescopic rod 7 is controlled to be contracted, the electric telescopic rod 7 is controlled to be contracted to drive the rotating tube 14 to move upwards, the angle between the rotating tube 14 and the cross arm 15 is changed, then the electromagnetic bolt corresponding to the rotating disc 10 is controlled to be extended, the rotating disc 10 and the U-shaped sliding plate 8 are locked, then the electromagnetic bolt corresponding to the U-shaped sliding plate 8 is controlled to be contracted, the U-shaped sliding plate 8 and the square tube 9 are unlocked, then the electric telescopic rod 7 is controlled to be extended, so that the rotating tube 14 is extended to a position where the cross arm 15 can be knocked in the rotating process of the rotating tube 14, then the electromagnetic bolt corresponding to the U-shaped sliding plate 8 is controlled to be extended, the U-shaped sliding plate 8 and the square tube 9 are locked, and then the electromagnetic bolt corresponding to the rotating disc 10 is controlled to be contracted, unlocking the turntable 10 and the U-shaped sliding plate 8, and controlling the electric telescopic rod 7 to repeatedly contract and extend, so that the cross arm 15 is knocked to remove ice; the purpose of cleaning ice and snow is achieved.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The electric cross arm comprises a fixed disc (1) and is characterized in that a fixing mechanism fixed on an electric pole is arranged on the fixed disc (1), a plurality of circular ring grooves (2) are formed in the lower portion of the fixed disc (1) in a coaxial array mode, a toothed ring (3) is arranged on the inner wall of each circular ring groove (2), the toothed ring (3) is meshed with a gear (4), the bottom of the gear (4) is connected with a linear-to-circular motion mechanism (5) through a rotating shaft (401), the bottom of the linear-to-circular motion mechanism (5) is connected with a first sliding plate (6), and the top of the gear (4) is locked with the top of each circular ring groove (2) through a locking mechanism; the electric telescopic handle is characterized in that an electric telescopic rod (7) is arranged at the bottom of the first sliding plate (6), a U-shaped sliding plate (8) is arranged at the bottom of the electric telescopic handle (7), a square tube (9) is sleeved outside the electric telescopic handle (7), the square tube (9) is in sliding connection with the inner wall of the circular groove (2) through a sliding block (17), the inner wall of the square tube (9) is in sliding connection with the first sliding plate (6) and the U-shaped sliding plate (8), the inner wall of one side, opposite to the U-shaped sliding plate (8), of the U-shaped sliding plate is connected with a turntable (10) in a rotating mode, a fixing shaft (11) is connected to the edge of one side, opposite to the turntable (10), the fixing shaft (11) is hinged to the electric telescopic handle (7), a through groove (12) is formed in one side wall of the square tube (9), one end of the turntable (10) is locked with the U-shaped sliding plate (8) through an electromagnetic bolt, and a hollow connecting shaft penetrating through the through groove (12) is fixed to the other end of the turntable (10) (13) The connecting shaft (13) is fixedly connected with a rotating pipe (14), and the bottom of the rotating pipe (14) is connected with the cross arm (15) through a clamping mechanism; the first sliding plate (6) and the U-shaped sliding plate (8) are locked with the inner wall of the square tube (9) through a limiting mechanism; the clamping mechanism is connected with the fixed shaft (11) through an unlocking rope (16) for controlling the clamping mechanism to unlock.

2. An electric cross arm according to claim 1, characterized in that the locking mechanism comprises slots arranged on the top wall of the circular groove (2) and distributed in a circumferential array, and an electromagnetic bolt is arranged on the top of the axis of the gear (4).

3. An electric cross arm according to claim 1, wherein the limiting mechanism comprises limiting grooves which are arranged on one side wall of the square pipe (9) in a linear array, and electromagnetic bolts which are matched with the limiting grooves are arranged on the U-shaped sliding plate (8) and the first sliding plate (6).

4. The electric cross arm according to claim 1, wherein the fixing mechanism comprises first arc-shaped fixing clamping pieces (18) symmetrically arranged at the lower part of the fixing disc (1), second arc-shaped fixing pieces (19) are symmetrically arranged between the two first arc-shaped fixing clamping pieces (18), the second arc-shaped fixing pieces (19) are connected with the fixing disc (1) in a sliding manner, sliding grooves (20) matched with the second arc-shaped fixing pieces (19) in a sliding manner are formed in the fixing disc (1), and the first arc-shaped fixing clamping pieces (18) are fixedly connected with the second arc-shaped fixing pieces (19) through fixing bolts.

5. The electric cross arm according to claim 1, wherein the linear-to-circular motion mechanism (5) comprises a cylinder (501), the rotating shaft (401) is rotatably connected with the cylinder (501) and penetrates through the top of the cylinder (501), the outer side wall of the cylinder (501) is slidably connected with the inner wall of the circular groove (2) through a sliding block (502), and one end of the rotating shaft (401) penetrating through the top of the cylinder (501) is fixedly connected with a rotating cylinder (503).

6. The electric cross arm as claimed in claim 5, wherein a spiral guide groove (21) is formed in an outer wall of the rotating cylinder (503), a guide post (22) is arranged in the spiral guide groove (21), one end, away from the spiral guide groove (21), of the guide post (22) is slidably connected with a sliding rod (23) through a spring, and the sliding rod (23) penetrates through the bottom of the cylinder (501) and is slidably connected with the cylinder (501); and a first sliding plate (6) is fixed at one end of the sliding rod (23) far away from the cylinder (501).

7. An electric cross arm as claimed in claim 6, wherein the spiral guide groove (21) comprises two circles of the first spiral groove (2101) spiraling upwards, the bottom end of the first spiral groove (2101) is connected with the midpoint of the first spiral groove (2101) through the first linear groove (2102), the top end of the first linear groove (2102) is connected with the midpoint of the first spiral groove (2101) through the second linear groove (2103), the depth of the bottom end of the first spiral groove (2101) is less than that of the bottom end of the first linear groove (2102), and the depth of the top end of the first linear groove (2102) is less than that of the midpoint of the first spiral groove (2101); the depth of the middle point of the first spiral groove (2101) is greater than that of the bottom end of the second linear groove (2103), and the depth of the top end of the second linear groove (2103) is greater than that of the top end of the first spiral groove (2101).

8. An electric cross arm according to claim 1, characterized in that a post insulator (24) is mounted on the cross arm (15), and the side wall of the square tube (9) is provided with the post insulator (24).

9. The electric cross arm according to claim 1, characterized in that the clamping mechanism comprises a clamping groove (25) formed in the cross arm (15), a clamping column (26) is inserted in the clamping groove (25), the clamping column (26) is slidably connected with the side wall of the rotating tube (14), the clamping column (26) penetrates through the side wall of the rotating tube (14), the clamping column (26) is connected with the inner wall of the rotating tube (14) through a spring, a guide wheel (27) used for guiding the rope (16) is arranged on the inner wall of the rotating tube (14), and the rope (16) penetrates through the connecting shaft (13) and the rotary table (10) to be connected with the fixed shaft (11).