CN220585949U - High-voltage crossing low-voltage wire composite cross arm - Google Patents

Abstract

The utility model discloses a high-voltage crossing low-voltage wire composite cross arm, which relates to the technical field of electric power transmission and comprises an upper stretcher and a lower stretcher which are arranged in parallel, wherein two ends of the upper stretcher and two ends of the lower stretcher are respectively connected through two diamond-shaped composite frames; go up stretcher and lower stretcher all including staple bolt mount, the equal horizontally connected of staple bolt mount both sides has compound pillar insulator cross arm, the vertical both ends of rhombus compound frame respectively with the outer end connection of the compound pillar insulator cross arm of last stretcher and lower stretcher, be equipped with middle part pillar insulator on the staple bolt mount, all be equipped with high-voltage line fixation knot on the outer tip of middle part pillar insulator and compound pillar insulator cross arm, the rhombus compound frame is horizontal both ends all are connected with the fixed knot of low-voltage line, the fixed knot of high-voltage line is used for fixing vertical cable, the fixed knot of low-voltage line is used for fixing horizontal cable. The problem of be arranged in the prior art fixed high-voltage down lead wire pass through traditional iron cross arm insulating ability poor of low-voltage wire part is solved.

Description

High-voltage crossing low-voltage wire composite cross arm

Technical Field

The utility model relates to the technical field of power transmission, in particular to a composite cross arm of a high-voltage crossing low-voltage wire.

Background

In the high-low voltage same-pole erection, when a high-voltage lead passes through a low-voltage circuit, the distance between a high-voltage (10 kV) lead and a low-voltage (0.4 kV) lead is not less than 0.2 m. In order to meet the requirement, three layers or more cross arms are required to be installed when the high-voltage lead of the distribution transformer passes through the low-voltage line, each layer of cross arm is erected in parallel by two rods, and each layer of cross arm bears the high-voltage line and the low-voltage line respectively, so that the distance between the high-voltage line and the low-voltage line meets the construction requirement, but the mode has the advantages of multiple materials, long construction period and inconvenient maintenance. And the conventional iron cross arm mostly adopts a ceramic skirt insulator, and the phenomenon of looseness easily occurs due to line swing when the ceramic skirt insulator is installed on the iron cross arm for a long time. In addition, the traditional cross arm is mostly an iron cross arm, and compared with the traditional cross arm, the composite cross arm cancels a suspension insulator string, reduces the width of a corridor, reduces wind deflection electricity hopping, reduces calling height, and meanwhile, the composite material has the advantages of high strength, light weight, corrosion resistance, good durability and the like, so that the composite cross arm is increasingly applied to a power transmission tower.

The Chinese patent publication No. CN103594993A discloses a high-low voltage lead cross arm which can play a supporting role and limit the transverse spacing, but the scheme is in the form of a traditional iron cross arm, has poor insulating capability and is not suitable for the application of modern power transmission networks. Therefore, it is necessary to design a power wiring fixing device which can not only improve the insulation capability, but also meet the requirement of the lower lead of the high-voltage lead to pass through the low-voltage lead, and ensure the line spacing in the passing stage.

Disclosure of Invention

Aiming at the defects in the background technology, the utility model provides a high-voltage crossing low-voltage wire composite cross arm, which solves the problem of poor insulating capability of the traditional iron cross arm for fixing a high-voltage lead wire crossing a low-voltage wire part in the prior art.

The technical scheme of the utility model is realized as follows: the high-voltage crossing low-voltage wire composite cross arm comprises two upper stretchers and two lower stretchers which are arranged in parallel, wherein the two ends of the upper stretcher are respectively connected with the two ends of the lower stretcher through two diamond-shaped composite frames; go up stretcher and lower stretcher all including staple bolt mount, the equal horizontally connected of staple bolt mount both sides has compound pillar insulator cross arm, the vertical both ends of rhombus compound frame respectively with the outer end connection of the compound pillar insulator cross arm of last stretcher and lower stretcher, be equipped with middle part pillar insulator on the staple bolt mount, all be equipped with high-voltage line fixation knot on the outer tip of middle part pillar insulator and compound pillar insulator cross arm, the rhombus compound frame is horizontal both ends all are connected with the fixed knot of low-voltage line, the fixed knot of high-voltage line is used for fixing vertical cable, the fixed knot of low-voltage line is used for fixing horizontal cable.

Preferably, the anchor ear fixing frame comprises an annular anchor ear, supporting seats are fixedly arranged on two sides of the annular anchor ear, and the supporting seats are connected with the composite post insulator cross arm.

Preferably, the annular hoop comprises two arc-shaped holding arms, one ends of the two arc-shaped holding arms are hinged with the supporting blocks, the other ends of the two arc-shaped holding arms are connected with the supporting blocks through bolts, and the middle pillar insulator is arranged on the supporting blocks.

Preferably, the supporting block is a T-shaped supporting block, two end parts of the supporting block are respectively hinged with the two arc-shaped holding arms, and the supporting block is connected with the middle pillar insulator through bolts.

Preferably, the composite post insulator cross arm and the middle post insulator both comprise insulator parts, the two ends of the insulator parts are respectively provided with an armature, the armatures at the inner end parts of the composite post insulator cross arm are connected with the supporting seat through bolts, the armatures at the outer end parts of the composite post insulator cross arm are connected with the high-voltage wire fixing buckles, the diamond composite frames are connected through bolts, the armatures at one end of the middle post insulator are connected with the supporting blocks through bolts, and the armatures at the other end of the middle post insulator are connected with the high-voltage wire fixing buckles through bolts.

Preferably, the diamond-shaped composite frame comprises four diamond-shaped support insulators, the four support insulators are hinged with armatures arranged at the outer end parts of the cross arms of the composite support insulators in a vertical two-end-point mode, the four support insulators are hinged with two connecting blocks in a horizontal two-end-point mode, and the low-voltage wire fixing buckle is connected to the connecting blocks through bolts. Further, two armatures at the outer end parts of the upper and lower composite post insulator cross arms are hinged with the first insulator pull rod.

Preferably, the armature at the inner end of the upper composite post insulator cross arm is connected with one of the connecting blocks of the diamond-shaped composite frame through a second insulator pull rod. The post insulator, the first insulator pull rod and the second insulator pull rod all comprise insulator connecting portions, hinge seats are arranged at two ends of each insulator connecting portion, and the hinge seats are hinged with the armatures.

Preferably, the high-voltage line fixing buckle and the low-voltage line fixing buckle comprise cushion blocks, one sides of the cushion blocks are provided with pressing blocks, the cushion blocks are connected with the pressing blocks through bolts and are correspondingly provided with grooves, and insulating gaskets are arranged in the grooves.

The utility model has the beneficial effects that: through setting up stretcher and lower stretcher, provide the installation support basis for whole compound cross arm, further through setting up staple bolt mount, can be connected with the wire pole when using, provide the installation basis for middle part post insulator and go up the compound post insulator cross arm of stretcher and lower stretcher, simultaneously through setting up the fixed foundation of installation that detains of high-voltage line on two middle part post insulators that correspond from top to bottom can provide the well way of lead wire under the high pressure, guarantee that the line is located the centre position in the lead wire under the high pressure to can prevent its swing along with wind. Through setting up the compound frame of diamond, can carry out the position limitation to four low-voltage lines and fix through the fixed knot of low-voltage line, satisfy the fixed needs of support to low-voltage line, and can guarantee its interval. Further set up the fixed knot of high-pressure line at compound pillar insulator outer tip, can fix two other high-pressure down leads, two vertical terminal points of rhombus compound frame are connected with the outer tip of the compound pillar insulator cross arm of last stretcher and lower stretcher respectively simultaneously to make two high-pressure down leads pass the low-voltage line through the center on the compound frame of rhombus, guaranteed the interval between high-pressure down lead and the low-voltage line. The utility model utilizes the fixed lock low pressure line of high pressure line to fix the wire, can fix the wire in the whole cross district simultaneously, and fixed effect is better and can be convenient for lead wire direction under the high pressure is straightened and is avoided rocking; all adopt compound insulator part to support between the wire, between wire and the staple bolt mount to connect, insulating effect is better. The problem of be arranged in the prior art fixed high-voltage down lead wire pass through traditional iron cross arm insulating ability poor of low-voltage wire part is solved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the present utility model in use

FIG. 3 is a schematic view of the structure of the anchor ear fixing frame of the present utility model;

fig. 4 is a schematic structural view of a hoop fixing frame according to another view angle of the present utility model;

FIG. 5 is a schematic diagram of the structure of the connection part between the outer end of the cross arm of the composite post insulator and the diamond-shaped composite frame;

FIG. 6 is a schematic diagram of the connection part of the connecting block and the post insulator, and the second insulator pull rod according to the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, in embodiment 1, a composite cross arm for high voltage ride through low voltage wire is characterized in that: the combined cross arm comprises an upper stretcher 1 and a lower stretcher 2 which are arranged in parallel, and an installation support foundation is provided for the whole combined cross arm by arranging the upper stretcher and the lower stretcher. The two ends of the upper stretcher 1 and the two ends of the lower stretcher 2 are respectively connected through two diamond-shaped composite frames 3. Further, the upper stretcher 1 and the lower stretcher 2 each include a hoop fixing frame 4, and the hoop fixing frames 4 can be connected with a telegraph pole when in use. The equal horizontal connection of staple bolt mount 4 both sides has compound pillar insulator cross arm 5, and the vertical both ends of compound frame 3 of rhombus respectively with the outer end connection of the compound pillar insulator cross arm 5 of last stretcher 1 and lower stretcher 2, be equipped with middle part pillar insulator 23 on the staple bolt mount 4, in this embodiment, middle part pillar insulator sets up along the length direction of low voltage line. Through setting up staple bolt mount, provide the installation basis for middle part pillar insulator and go up the compound pillar insulator cross arm of stretcher and stretcher down. The middle pillar insulator 23 and the outer end part of the composite pillar insulator cross arm 5 are respectively provided with a high-voltage line fixing buckle 6, two transverse endpoints of the diamond composite frame 3 are respectively connected with a low-voltage line fixing buckle 7, the high-voltage line fixing buckle 6 is used for fixing a vertical cable, and the low-voltage line fixing buckle 7 is used for fixing a horizontal cable. The high-voltage wire fixing buckles are arranged on the two middle post insulators corresponding to each other up and down, so that a mounting and fixing foundation can be provided for the middle circuit of the high-voltage down lead, the middle circuit of the high-voltage down lead is ensured to be positioned at the middle position, and the high-voltage down lead can be prevented from swinging along with wind. The diamond-shaped composite frame is arranged, so that the four low-voltage lines can be limited in position and fixed through the low-voltage line fixing buckle, the supporting and fixing requirements for the low-voltage lines are met, and the distance between the low-voltage lines can be ensured. The high-voltage wire fixing buckles are arranged at the outer end parts of the composite post insulators, the other two high-voltage down-lead wires can be fixed, and meanwhile, the two vertical end points of the diamond-shaped composite frame are respectively connected with the outer end parts of the composite post insulator cross arms of the upper stretcher and the lower stretcher, so that the two high-voltage down-lead wires just pass through the low-voltage line through the center of the diamond-shaped composite frame, and the distance between the high-voltage down-lead wires and the low-voltage line is ensured.

This embodiment utilizes the fixed lock low pressure line of high pressure line to fix the knot to the wire, can fix the wire in the whole region of wearing simultaneously, and fixed effect is better and can be convenient for lead wire direction is straightened under the high pressure and is avoided rocking. Meanwhile, corresponding insulator components of a composite technology are adopted for supporting and connecting between adjacent wires and between the wires and the anchor ear fixing frame, so that the insulation effect is better.

As shown in fig. 3 and 4, in embodiment 2, on the basis of embodiment 1, the anchor ear fixing frame 4 includes an annular anchor ear, and support bases 9 are fixedly arranged on two sides of the annular anchor ear, and the support bases 9 are connected with the composite post insulator cross arm 5.

In this embodiment, the annular hoop includes two arc arms 10, and two arc arms 10 one end all are articulated with supporting shoe 11, are connected through the bolt between the two arc arms other end, and middle part pillar insulator 23 sets up on supporting shoe 11. Further, the supporting block 11 is a T-shaped supporting block, two end parts of the supporting block 11 are respectively hinged with the two arc-shaped holding arms 10, and the supporting block 11 is connected with the middle pillar insulator 23 through bolts. When the electric pole locking device is used, during installation, one end of the arc-shaped holding arm connected through the bolt is opened, the two arc-shaped holding arms are buckled on the electric pole, and then the two arc-shaped holding arms are locked on the electric pole through the bolt. The middle post insulator 23 is then mounted on the support blocks and the composite post insulator crossarms 5 are mounted on the support blocks 9.

In embodiment 3, on the basis of embodiment 2, the composite post insulator cross arm 5 and the middle post insulator 23 both comprise an insulator portion 12, two ends of the insulator portion 12 are respectively provided with an armature 13, the armature 13 at the inner end of the composite post insulator cross arm 5 is in bolted connection with the supporting seat 9, and the armature 13 at the outer end is in bolted connection with the high-voltage wire fixing buckle 6 and the diamond-shaped composite frame 3. In this embodiment, the length of the insulator portion of the composite post insulator cross arm is greater than the length of the insulator portion of the middle post insulator, and the length of the middle post insulator is reduced, so that the support stability of the high-voltage down-lead of the centering wire can be improved on the basis of maintaining the insulation capability, and meanwhile, the cost can be saved. The armature 13 at one end of the middle post insulator 23 is connected with the supporting block 11 through bolts, and the armature 13 at the other end is connected with the high-voltage wire fixing buckle 6 through bolts. The armature 13 of the middle post insulator is a U-shaped armature, and at least two through holes are correspondingly formed in the U-shaped armature and the supporting block.

In embodiment 4, as shown in fig. 5 and 6, on the basis of embodiment 3, as shown in fig. 1, each diamond-shaped composite frame 3 comprises four diamond-shaped pillar insulators 14, the four pillar insulators 14 are hinged with armatures 13 correspondingly arranged at the outer end parts of the cross arms 5 of the composite pillar insulators in a vertical two-to-two mode at two end points, the four pillar insulators 14 are hinged with two connecting blocks 15 in a horizontal two-to-two mode at two end points, and the low-voltage wire fixing buckle 7 is connected to the connecting blocks 15 through bolts.

As a further alternative, the two armatures 13 at the outer ends of the two composite post insulator crossarms 5 corresponding up and down are both hinged with the first insulator pull rods 16, and in this embodiment, two first insulator pull rods 16 are provided in total. In addition, further, the armature 13 at the inner end of the upper composite post insulator cross arm 5 is connected with one of the connecting blocks 15 of the diamond composite frame 3 through the second insulator pull rod 19, and in this embodiment, two second insulator pull rods 19 are provided together and are respectively connected with the inner sides of the two connecting blocks of the diamond composite frame, namely, the connecting blocks close to the hoop fixing frame. In this embodiment, the post insulator 14, the first insulator pull rod 16 and the second insulator pull rod 19 each include an insulator connecting portion 17, hinge bases 18 are provided at both ends of the insulator connecting portion 17, and the hinge bases 18 are hinged to the armature 13. In this embodiment, the insulator connection portion 17 can perform a good insulating function, the hinge seat 18 is a U-shaped seat, and the hinge seat 18 and the armature and the hinge seat and the connection block are all connected by bolts. The first insulator pull rod 16 can vertically play a role in connecting two armatures, limit the angle between the pillar insulators on the diamond-shaped composite frame, divide the two pillar insulators of the diamond-shaped composite frame into two triangular structures, and have stronger structural stability. Set up the second insulator pull rod, can form connection structure between the supporting seat of connecting block and upper end to form triangle-shaped bearing structure with compound pillar insulator cross arm between, can draw to one side to support to whole diamond-shaped compound frame, supporting stability is stronger.

Embodiment 5, on the basis of embodiment 4, high-voltage line fixed knot 6 and low-voltage line fixed knot 7 all include cushion 20, and cushion 20 one side is equipped with briquetting 21, and bolted connection just corresponds between cushion 20 and the briquetting 21 and is equipped with recess 22, and is equipped with insulating gasket in the recess 22, sets up insulating gasket and can play better insulating effect, can also carry out closely laminating with the cable simultaneously, prevents its slip or twist. In this embodiment, the pressing block 21 and the pad 20 of the high-voltage wire fixing buckle are correspondingly provided with through holes on the armature 13, and the pressing block, the pad 20 and the armature 13 are connected through bolts penetrating through the through holes. The pressing block 21 and the cushion block 20 of the low-voltage line fixing buckle are correspondingly provided with through holes on the connecting block 15 and are connected through bolts penetrating through the through holes. As an alternative scheme, the cushion block of the high-voltage wire fixing buckle is connected with the armature through a bolt, and the pressing block is connected with the cushion block through a bolt. The cushion block of the low-voltage wire fixing buckle is connected with the armature through a bolt, and the pressing block is connected with the cushion block through a bolt. When the high-voltage wire connecting device is installed, the central line of the groove on the low-voltage wire fixing buckle is horizontally arranged, and the central line of the groove of the high-voltage wire fixing buckle is vertically arranged, so that the connection requirement that the high-voltage wire passes through the low-voltage wire is met.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a high voltage passes through compound cross arm of low pressure wire which characterized in that: comprises an upper stretcher (1) and a lower stretcher (2) which are arranged in parallel, wherein the two ends of the upper stretcher (1) are respectively connected with the two ends of the lower stretcher (2) through two diamond-shaped composite frames (3); the utility model discloses a high-voltage wire cable fixing device, including stretcher (1) and lower stretcher (2), both sides of anchor ear mount (4) all horizontally connect have compound post insulator cross arm (5), two vertical terminal points of rhombus compound frame (3) respectively with the outer end connection of compound post insulator cross arm (5) of last stretcher (1) and lower stretcher (2), be equipped with middle part post insulator (23) on anchor ear mount (4), all be equipped with high-voltage wire fixing button (6) on the outer tip of middle part post insulator (23) and compound post insulator cross arm (5), two horizontal terminal points of rhombus compound frame (3) all are connected with low-voltage wire fixing button (7), high-voltage wire fixing button (6) are used for fixed vertical cable, low-voltage wire fixing button (7) are used for fixed horizontal cable.

2. The high voltage ride through low voltage conductor composite cross arm of claim 1, wherein: the anchor ear fixing frame (4) comprises annular anchor ears, supporting seats (9) are fixedly arranged on two sides of each annular anchor ear, and the supporting seats (9) are connected with the composite post insulator cross arm (5).

3. The high voltage ride through low voltage conductor composite cross arm of claim 2, wherein: the annular hoop comprises two arc-shaped holding arms (10), one ends of the two arc-shaped holding arms (10) are hinged with the supporting block (11), the other ends of the two arc-shaped holding arms are connected through bolts, and the middle support post insulator (23) is arranged on the supporting block (11).

4. The high voltage ride through low voltage conductor composite cross arm of claim 3, wherein: the support block (11) is a T-shaped support block, two end parts of the support block (11) are respectively hinged with the two arc-shaped holding arms (10), and the support block (11) is connected with the middle post insulator (23) through bolts.

5. The high voltage ride through low voltage conductor composite cross arm of claim 4, wherein: composite post insulator cross arm (5) and middle part post insulator (23) all include insulator portion (12), and insulator portion (12) both ends all are equipped with armature (13), and armature (13) and supporting seat (9) bolted connection of tip in composite post insulator cross arm (5), armature (13) and high-voltage line fixed knot (6) of outer tip, diamond-shaped composite frame (3) bolted connection, armature (13) and supporting shoe (11) bolted connection of middle part post insulator (23) one end, armature (13) and high-voltage line fixed knot (6) bolted connection of the other end.

6. The high voltage ride through low voltage conductor composite cross arm of claim 5, wherein: the diamond-shaped composite frame (3) comprises four diamond-shaped support insulators (14), the four support insulators (14) are hinged with armatures (13) which are arranged at the outer end parts of the composite support insulator cross arms (5) in a vertical two-end-point mode respectively, the four support insulators (14) are hinged with two connecting blocks (15) respectively at the two transverse end-point positions, and the low-voltage wire fixing buckle (7) is connected to the connecting blocks (15) through bolts.

7. The high voltage ride through low voltage conductor composite cross arm of claim 6, wherein: two armatures (13) at the outer end parts of the upper and lower corresponding two composite post insulator cross arms (5) are hinged with a first insulator pull rod (16).

8. The high voltage ride through low voltage conductor composite cross arm of claim 7, wherein: the armature (13) at the inner end part of the upper composite post insulator cross arm (5) is connected with one connecting block (15) of the diamond-shaped composite frame (3) through a second insulator pull rod (19).

9. The high voltage ride through low voltage conductor composite cross arm of claim 8, wherein: the post insulator (14), the first insulator pull rod (16) and the second insulator pull rod (19) comprise insulator connecting portions (17), hinging seats (18) are arranged at two ends of the insulator connecting portions (17), and the hinging seats (18) are hinged with the armatures (13).

10. The high voltage ride through low voltage conductor composite cross arm of any one of claims 1-9, wherein: the high-voltage line fixing buckle (6) and the low-voltage line fixing buckle (7) comprise cushion blocks (20), one sides of the cushion blocks (20) are provided with pressing blocks (21), the cushion blocks (20) and the pressing blocks (21) are connected through bolts and correspondingly provided with grooves (22), and insulating gaskets are arranged in the grooves (22).