CN212837046U - Insulating cross arm and power transmission pole - Google Patents

Abstract

The utility model discloses an insulating cross arm and power transmission pole, above-mentioned insulating cross arm is including relative first cross arm and the second cross arm that sets up, and a tip of first cross arm sets up first root link fitting, and a tip of second cross arm sets up second root link fitting, and the tip that first root link fitting kept away from first cross arm sets up first pinhole, and the tip that second root link fitting kept away from the second cross arm sets up the second pinhole, and first pinhole and second pinhole correspond to cooperate the back and articulate first cross arm and second cross arm through first round pin axle. The utility model discloses an insulating cross arm simple structure, light weight is high-strength, corrosion-resistant, ageing-resistant, insulating properties is good, and folding insulating cross arm has reduced the transportation volume, has reduced the freight, and the on-the-spot installation is convenient, efficient, and this insulating cross arm is applicable to multiple body of rod, has the commonality. The utility model discloses still disclose a transmission of electricity pole.

Description

Insulating cross arm and power transmission pole

Technical Field

The utility model relates to a transmission of electricity insulating apparatus field, more specifically relate to an insulating cross arm and transmission of electricity pole.

Background

In the field of electrical equipment, an insulating cross arm for a transmission line is an important mating structural member of a transmission pole, and is used for supporting a conducting wire, a lightning conductor and the like and keeping a certain safety distance according to regulations. At present, iron cross arms are adopted in power transmission lines, so that the problem of flashover is easily caused due to poor insulativity. And the cross arm tower head needs to be formed by a plurality of cross arms and needs to be transported separately, and when the tower head is installed on site, the tower head can be fixed on the tower after being spliced and assembled under the tower in advance, so that the steps are complex.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model aims to provide an insulating cross arm and power transmission pole to solve the problem that current cross arm freight is high, the field installation step is complicated.

In order to achieve the above object, the present invention adopts the following technical means: the utility model provides an insulating cross arm, includes relative first cross arm and the second cross arm that sets up, a tip of first cross arm sets up first root link fitting, and a tip of second cross arm sets up second root link fitting, and the tip that first root link fitting kept away from first cross arm sets up first pinhole, and the tip that second cross arm was kept away from to second root link fitting sets up the second pinhole, and first pinhole and second pinhole correspond after the cooperation with first cross arm and second cross arm articulated through first round pin axle.

The insulating cross arm is hinged by arranging the pin holes in the root hardware fittings of the two insulating cross arms and penetrating the pin shafts in the two pin holes, namely the first cross arm and the second cross arm which are hinged can rotate relatively freely, and when the included angle between the first cross arm and the second cross arm is 0 degree, the insulating cross arm is in a folded state, so that the transportation volume can be reduced, the transportation cost is reduced, and the boxing and transportation are facilitated; when the contained angle between first cross arm and the second cross arm is 180, for the state after this insulating cross arm expandes, can directly be connected with transmission of electricity pole, saved the equipment of piecing together before the installation of insulating cross arm, make on-the-spot simple to operate swift, efficient.

Preferably, the end of the first root connecting hardware fitting far away from the first cross arm is provided with a first fixing plate, the end of the second root connecting hardware fitting far away from the second cross arm is provided with a second fixing plate, the first fixing plate is provided with a first fixing hole, the second fixing plate is provided with a second fixing hole, the first fixing hole and the second fixing hole are correspondingly matched and fixedly connected through a locking piece, so that the first cross arm is fixedly connected with the second cross arm, the axis of the first cross arm is parallel to the axis of the second cross arm, the unfolded insulation cross arm cannot rotate freely relatively and is kept stable, the insulation cross arm is conveniently and fixedly connected with a power transmission rod, and the insulation cross arm is enabled to stably operate.

Preferably, the first fixing plate and the second fixing plate are both L-shaped, the center of circle of the first fixing hole is located in a vertical or horizontal plane where the axis of the first cross arm is located, a connecting line formed by the center of circle of the first pin hole and the center of circle of the first fixing hole is perpendicular to the axis of the first cross arm, the center of circle of the second fixing hole is located in a vertical or horizontal plane where the axis of the second cross arm is located, and a connecting line formed by the center of circle of the second pin hole and the center of circle of the second fixing hole is perpendicular to the axis of the second cross arm, so that a space is provided for relative rotation of the first cross arm and the second cross arm, and the insulating cross arm can be folded and unfolded conveniently.

Preferably, the number of the first fixing plate and the second fixing plate is one, and the end of the first fixing plate far away from the first pin hole is provided with a baffle plate which is vertically arranged on one side of the first fixing plate close to the second fixing plate, so that the first cross arm and the second cross arm can be positioned to the position where the first cross arm and the second cross arm are coaxial after the first cross arm and the second cross arm are unfolded from the folded state, and the position can be kept so as to fixedly connect the first cross arm and the second cross arm, and simultaneously, the material used by the first fixing plate and the second fixing plate is reduced.

Preferably, the number of the first fixing plates and the second fixing plates is two, the two first fixing plates and the two second fixing plates are arranged in parallel, and at least one first fixing plate is inserted between the two second fixing plates, so that the first cross arm and the second cross arm are stably connected.

Preferably, above-mentioned insulating cross arm still includes the top looks cross arm that sets up perpendicularly with first cross arm, and a tip of top looks cross arm sets up third root link fitting, and the tip that the third root link fitting kept away from top looks cross arm sets up the third pinhole, sets up the fourth pinhole on the first cross arm, and the cooperation back of third pinhole and fourth pinhole will be pushed up looks cross arm and first cross arm through the second round pin axle and articulated.

The insulating cross arms are arranged in a triangular mode, the top phase cross arms and the first cross arms can rotate freely after being hinged, and when the included angle between the top phase cross arms and the first cross arms is 0 degree, the insulating cross arms are in a folded state, so that the transportation volume can be reduced, the transportation cost can be reduced, and the box-packing transportation is facilitated; when the contained angle between top looks cross arm and the first cross arm is 90, for the state after this insulating cross arm expandes, can directly be connected with transmission of electricity pole, saved the equipment of piecing together before the cross arm installation, make on-the-spot simple to operate swift, efficient.

Preferably, the third connecting fitting is provided with a threaded hole at the end far away from the top-phase cross arm, and the top-phase cross arm is matched with the first cross arm and the second cross arm through the threaded hole and the fastener and then fixedly connected, so that the expanded insulating cross arm can be stably connected.

Preferably, another tip of above-mentioned top looks cross arm sets up top looks string line gold utensil, and top looks string line gold utensil includes the connecting portion of being connected with the body of top looks cross arm and sets up the wire winding portion on connecting portion, and the diameter of wire winding portion is less than the diameter of connecting portion, the ligature of the wire of being convenient for.

Preferably, a support table is arranged at one end of the winding portion, which is far away from the connecting portion, and a wire groove is arranged on the support table and used for hanging a wire.

In order to achieve the above object, the present invention adopts another technical solution as follows: there is provided a power transmission pole comprising a pole body and any one of the above insulating cross arms fixed to the pole body.

The utility model provides an insulating cross arm is folded cascade, and is articulated through the round pin axle between two at least cross arms, can rotate freely relatively to insulating cross arm keeps fold condition and expansion state. The insulating cross arm after folding is small, the transportation of being convenient for, and the insulating cross arm after the expansion can be connected firmly, can directly be connected with transmission of electricity pole, has saved the equipment of piecing together before the installation of insulating cross arm, makes on-the-spot simple to operate swift, efficient.

Drawings

Fig. 1 is a schematic structural diagram of an insulating cross arm 10 according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first root connecting hardware fitting 100 according to a first embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second root connecting hardware 200 according to a first embodiment of the present invention;

fig. 4 is a schematic structural diagram of another view of the insulating cross arm 10 according to the first embodiment of the present invention;

fig. 5 is a schematic structural diagram of an insulating cross arm 20 according to a second embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first root connecting hardware fitting 300 according to a second embodiment of the present invention;

fig. 7 is a schematic structural diagram of a second root connecting hardware 400 according to a second embodiment of the present invention;

fig. 8 is a schematic structural diagram of a third root connecting hardware 500 according to the second embodiment of the present invention;

fig. 9 is a schematic structural diagram of a top-hung wire fitting 600 according to the second embodiment of the present invention;

fig. 10 is a schematic structural diagram of an insulating cross arm 30 according to a third embodiment of the present invention;

fig. 11 is a schematic structural diagram of a first root connecting hardware 700 according to a third embodiment of the present invention;

fig. 12 is a schematic structural diagram of a second root connecting hardware 800 according to a third embodiment of the present invention;

fig. 13 is a schematic structural diagram of a third root connecting fitting 900 according to a third embodiment of the present invention.

Detailed Description

As required, detailed embodiments of the present invention will be disclosed herein. However, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed manner, including employing various features disclosed herein in connection with which such features may not be explicitly disclosed.

In the present invention, the term "connected" is to be understood broadly, and may be directly connected or connected through an intermediate medium, unless otherwise specifically defined or limited. In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "horizontal", "vertical", "side", "end", etc. are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

The first embodiment is as follows:

as shown in fig. 1, 2 and 3, the present embodiment provides an insulating cross arm 10, and the insulating cross arm 10 includes a first cross arm 11 and a second cross arm 12 which are oppositely disposed. One end of the first cross arm 11 is provided with a first root link fitting 100, one end of the second cross arm 12 is provided with a second root link fitting 200, the end of the first root link fitting 100 away from the first cross arm 11 is provided with a first pin hole 122, the end of the second root link fitting 200 away from the second cross arm 12 is provided with a second pin hole 222, and the first pin hole 122 and the second pin hole 222 are correspondingly matched and then are hinged with the first cross arm 11 and the second cross arm 12 through a first pin shaft 001.

Specifically, as shown in fig. 2, the first root link fitting 100 includes a body 110, a first fixing plate 120, and two link lugs 130. The first fixing plate 120 is an L-shaped flat plate and located at an end of the first root connecting hardware 100 away from the first cross arm 11, the plate surface of the first fixing plate 120 is horizontally arranged, the first fixing plate 120 is provided with a first fixing hole 121 and a first pin hole 122, a penetrating direction of the first fixing hole 121 and the first pin hole 122 is perpendicular to the plate surface of the first fixing plate 120, a circle center of the first fixing hole 121 is located in a vertical plane where an axis of the first cross arm 11 is located, and a connecting line formed by the circle center of the first pin hole 122 and the circle center of the first fixing hole 121 is perpendicular to the axis of the first cross arm 11. The body 110 comprises an upper surface 111 and a lower surface 112 which are oppositely arranged, the two square flat-plate connecting lugs 130 are symmetrically arranged on the upper surface 111 and the lower surface 112 respectively, the plate surfaces of the two connecting lugs 130 are vertically arranged, the two connecting lugs 130 are provided with connecting holes 131, and the through direction of the connecting holes 131 is perpendicular to the plate surfaces of the connecting lugs 130.

As shown in fig. 3, the second root link fitting 200 and the first root link fitting 100 have the same structure, and specifically include a body 210, a second fixing plate 220, and two engaging lugs 230. The second fixing plate 220 is an L-shaped flat plate, and is located at an end of the second root connecting hardware 200 away from the second cross arm 12, a plate surface of the second fixing plate 220 is horizontally arranged, a second fixing hole 221 and a second pin hole 222 are arranged on the second fixing plate 220, a penetrating direction of the second fixing hole 221 and the second pin hole 222 is perpendicular to the plate surface of the second fixing plate 220, a circle center of the second fixing hole 221 is located in a vertical plane where an axis of the second cross arm 12 is located, and a connecting line formed by the circle center of the second pin hole 222 and the circle center of the second fixing hole 221 is perpendicular to the axis of the second cross arm 12. Body 210 includes relative upper surface 211 and the lower surface 212 that sets up, and the engaging lug 230 of two square flat boards symmetry respectively sets up on upper surface 211 and lower surface 212, and the face of two engaging lugs 230 is vertical to be set up, all is provided with connecting hole 231 on two engaging lugs 230, and the direction of lining up of connecting hole 231 is perpendicular with the face of engaging lug 230.

After the first pin hole 122 and the second pin hole 222 are engaged, the first cross arm 11 and the second cross arm 12 are hinged by the first pin 001, so that the first cross arm 11 and the second cross arm 12 can relatively freely rotate in the horizontal plane. Of course, the plate surfaces of the first fixing plate 120 and the second fixing plate 220 may be vertically disposed so that the first cross arm 11 and the second cross arm 12 relatively freely rotate in the vertical plane.

Further, as shown in fig. 1, in one embodiment, the number of the first fixing plates 120 and the second fixing plates 220 is two, and at least one first fixing plate 120 is inserted between two second fixing plates 220, so that the first cross arm 11 and the second cross arm 12 are stably connected. Meanwhile, the first fixing plate 120 and the second fixing plate 220 are L-shaped, which can provide enough space for the relative free rotation of the first cross arm 11 and the second cross arm 13, and facilitate the folding and unfolding of the insulating cross arm 10.

In other embodiments, the number of the first fixing plate 120 and the second fixing plate 220 may be one, and a baffle plate is disposed at an end of the first fixing plate 120, which is far away from the first pin hole 122, and is vertically disposed at a side of the first fixing plate 120, which is close to the second fixing plate 220, so that the first cross arm 11 and the second cross arm 12 can be positioned to a position where the first cross arm 11 and the second cross arm 12 are coaxial after the first cross arm 11 and the second cross arm 12 are moved from the folded state to the unfolded state, and the position can be maintained to fixedly connect the first cross arm 11 and the second cross arm 12. Of course, a baffle plate may be disposed at an end of the second fixing plate 220 away from the second pin hole 222, and the baffle plate may be vertically disposed at a side of the second fixing plate 220 close to the first fixing plate 120.

In another embodiment, the first fixing hole 121 and the second fixing hole 221 are light holes, and are locked and fixed by a locking member, which may be a bolt and a nut, or other components capable of being locked and fixed, such as a snap structure, etc.; in other embodiments, the first fixing hole 121 and the second fixing hole 221 may be threaded through holes, and are fixedly connected by a fastener, so that the first cross arm 11 and the second cross arm 12 can be continuously maintained in the unfolded state.

Further, first cross arm 11 and second cross arm 12 all still include cross arm body, insulating layer and hanging wire gold utensil. The cross section of the cross arm body is solid square, round or other formable shapes, and can be a hollow structure. The cross arm body is made of composite materials, for example, the composite materials are formed by impregnating glass fibers or aramid fibers with resin and then are subjected to pultrusion, the composite materials are corrosion-resistant relative to metal, the cost is low, and the weight of the cross arm can be reduced. The insulating layer is coated on the cross arm body, is made of a silicon rubber material, has good aging resistance and hydrophobic migration performance, can reduce the probability of pollution flashover and rain flashover, and can be made of rubber materials in other forms. The wire hanging fitting is used for fixing the conducting wire, the conducting wire can be fixed on the wire hanging fitting through a binding process, or a pressing cover can be arranged to fix the conducting wire, and the specific structure of the wire hanging fitting is not limited. Meanwhile, the first root connecting hardware fitting 100, the second root connecting hardware fitting 200 and the wire hanging hardware fitting can be made of metal or composite materials, and the metal materials can be made of metals such as iron, steel and aluminum.

In addition, referring to fig. 1 to 4, the first root link fitting 100 and the second root link fitting 200 are provided with a support member on the same side of the insulating cross arm 10, specifically, the first root link fitting 100 is provided with a support member 140, the second root link fitting 200 is provided with a support member 240, and the support member is used for cooperating with the power transmission pole to enable the insulating cross arm 10 and the power transmission pole to be tightly connected, and meanwhile, the first root link fitting 100 and the second root link fitting 200 are fixedly connected with the power transmission pole through a rod fixing member (not shown in the figure) which is generally a combination of a hoop and a nut and passes through the connecting hole 131 and the connecting hole 231. The supporting members 140 and 240 may be triangular supports suitable for cylindrical or conical power transmission pole connection, and of course, the supporting members 140 and 240 may be provided in other shapes as long as they can match with the corresponding power transmission pole shape, and thus, the description thereof is omitted.

The insulating cross arm 10 provided by the embodiment is a combined cross arm of a first cross arm 11 and a second cross arm 12, is used for supporting a wire of a double-loop power transmission line, and is only required to be provided with three insulating cross arms 10; the insulating cross arm can also be used for supporting a lead of a single-loop power transmission line, and only one insulating cross arm 10 and one upper cross arm are arranged; the insulating cross arm can also be used for supporting the conducting wires of the power transmission lines with more loops, and the insulating cross arms 10 with corresponding quantity are installed. The insulating cross arm 10 has simple structure, light weight, high strength, corrosion resistance, aging resistance and good insulating property, and is suitable for various rod bodies. The first pin hole 122 is formed in the first root link fitting 100 on the first cross arm 11, the second pin hole 222 is formed in the second root link fitting 200 on the second cross arm 12, the first pin hole 122 and the second pin hole 222 are correspondingly matched, the first cross arm 11 and the second cross arm 12 are hinged through the first pin shaft 001, and the hinged first cross arm 11 and the hinged second cross arm 12 can rotate freely relatively. Assume that the included angle between the first cross arm 11 and the second cross arm 12 is α, and α is equal to or less than 180 °. In one embodiment, α is 0 ° during transportation, that is, the first cross arm 11 and the second cross arm 12 are completely folded through the hinge structure, so that the transportation volume can be reduced, the transportation cost can be reduced, and the container transportation is facilitated; when the insulation cross arm is installed on site, the first cross arm 11 and the second cross arm 12 are unfolded to enable alpha to be 180 degrees, namely the first cross arm 11 and the second cross arm 12 are completely unfolded, at the moment, the first fixing hole 121 and the second fixing hole 221 are correspondingly matched and fixedly connected through the locking piece, so that the first cross arm 11 and the second cross arm 12 are fixedly connected, the axis of the first cross arm 11 and the axis of the second cross arm 12 are parallel to each other, the unfolded insulation cross arm 10 cannot rotate relatively freely through the fixed connection of the locking piece, the fixed connection with a power transmission pole and the stable operation of the insulation cross arm 10 are facilitated, the insulation cross arm 10 can be directly connected with the power transmission pole at the moment, the splicing and assembling before the installation of the insulation cross arm are omitted, and the installation on site is convenient and rapid and high in efficiency.

In some embodiments, after the first cross arm 11 and the second cross arm 12 are unfolded and fixed, the axis of the first cross arm 11 and the axis of the second cross arm 12 are coaxial, that is, the axis of the first cross arm 11 and the axis of the second cross arm 12 are located in the same plane in the folding and unfolding processes, the first cross arm 11 and the second cross arm 12 are symmetrically arranged after being unfolded and fixed, and the insulating cross arm 10 can be horizontally arranged after being fixed on a power transmission pole, so that the two sides are stressed evenly, and the stability is good. In other embodiments, after the first cross arm 11 and the second cross arm 12 are unfolded and fixed, the first cross arm 11 can be located above the second cross arm 12 in the vertical plane, and the axis of the first cross arm 11 and the axis of the second cross arm 12 are parallel to each other. In other embodiments, the first cross arm 11 and the second cross arm 12 may be arranged at an obtuse angle in the horizontal direction or the vertical direction after being unfolded and fixed, as long as the wires can be hooked.

Example two:

as shown in fig. 5 to 9, the insulating cross arm 20 of the present embodiment has a structure similar to that of the insulating cross arm 10, and the insulating cross arm 20 includes a first cross arm 21, a second cross arm 22, and a top phase cross arm 23, the first cross arm 21 and the second cross arm 22 are disposed opposite to each other, and the top phase cross arm 23 is disposed perpendicular to the first cross arm 21. A first root link fitting 300 is disposed at one end of the first cross arm 21, a second root link fitting 400 is disposed at one end of the second cross arm 22, and a third root link fitting 500 is disposed at one end of the top-phase cross arm 23. The end of the first root link fitting 300 away from the first cross arm 21 is provided with a first pin hole 322 and a fourth pin hole 332, the end of the second root link fitting 400 away from the second cross arm 22 is provided with a second pin hole 422, and the end of the third root link fitting 500 away from the top-phase cross arm 23 is provided with a third pin hole 522. First pin hole 322 and second pin hole 422 are correspondingly engaged to hinge first cross arm 21 and second cross arm 22 via first pin 002, and third pin hole 522 and fourth pin hole 332 are correspondingly engaged to hinge top cross arm 23 and first cross arm 21 via second pin 003, but it is also possible to provide fourth pin hole (not shown) in second cross arm 22 to vertically hinge top cross arm 23 and second cross arm 22.

Specifically, the third connecting fitting 500 includes a body 510 and a third fixing plate 520, a vertical side of the body 510 close to the first cross arm 21 is 511, the third fixing plate 520 is a square flat plate disposed on the side 511, a third pin hole 522 is disposed on the third fixing plate 520, and a penetrating direction of the third pin hole 522 is perpendicular to a plate surface of the third fixing plate 520. The first root link fitting 300 includes an upper surface 311, a fourth pin hole 332 is located on the link lug 330 on the upper surface 311, and is located at one end of the link lug 330 close to the top-phase cross arm 23, and a penetrating direction of the fourth pin hole 332 is perpendicular to a plate surface of the link lug 330.

Further, the end of the third connecting hardware fitting 500 far from the top phase cross arm 23 is provided with a threaded hole 513, the axis of the threaded hole 513 is located on the axis of the third connecting hardware fitting 500, and the first cross arm 21, the second cross arm 22 and the top phase cross arm 23 are fixedly connected after being matched with each other through the first fixing hole 321, the second fixing hole 421, the threaded hole 513 and a fastener (not shown in the figure), so that the unfolded insulating cross arm 20 can stably operate.

Further, the body of the top-phase cross arm 23 is consistent with the body structures of the first cross arm 21 and the second cross arm 22 and the materials of the structures, and the first root connecting hardware 300, the second root connecting hardware 400 and the third root connecting hardware 500 are also consistent with the materials of the first root connecting hardware 100 in the first embodiment, and are not repeated here.

In addition, as shown in fig. 5 and 9, a top-phase wire-hanging fitting 600 is disposed at one end of the top-phase cross arm 23 away from the third root connecting fitting 500, the top-phase wire-hanging fitting 600 includes a connecting portion 610 connected with the body of the top-phase cross arm 23 and a wire winding portion 620 disposed on the connecting portion 610, and the diameter of the wire winding portion 620 is smaller than that of the connecting portion 610, which facilitates binding of wires. One end of the winding portion 620, which is far away from the connecting portion 610, is provided with a supporting platform 630, and the supporting platform 630 is provided with a wire groove 631 for hooking a wire.

The insulating cross arm 20 provided in this embodiment is in a triangular arrangement, that is, a combined cross arm of the first cross arm 21, the second cross arm 22 and the top phase cross arm 23, and is used for supporting a wire of a single-loop power transmission line, and the function of the insulating cross arm 20 is the same as that of the insulating cross arm 10 in the first embodiment, and is not described again. The top phase cross arm 23 and the first cross arm 21 after being hinged can rotate relatively freely, and an included angle between the top phase cross arm 23 and the first cross arm 21 is assumed to be beta, and the beta is smaller than or equal to 90 degrees. In one embodiment, β is 0 ° during transportation, that is, the first cross arm 21 and the top cross arm 23 are completely folded through the hinge structure, so that the transportation volume can be reduced, the transportation cost can be reduced, and the container transportation is facilitated; when the insulation cross arm is installed on site, the first cross arm 21 and the top phase cross arm 23 are unfolded to enable beta to be 90 degrees, namely the first cross arm 21 and the top phase cross arm 23 are completely unfolded, at the moment, the first fixing hole 321, the second fixing hole 421 and the threaded hole 513 are correspondingly matched and fixedly connected through the locking piece, so that the first cross arm 21 and the second cross arm 22 are fixedly connected with the top phase cross arm 23, the axis of the first cross arm 21 is parallel to the axis of the second cross arm 22, the axis of the top phase cross arm 23 is perpendicular to the axis of the first cross arm 21, the unfolded insulation cross arm 20 cannot rotate freely relatively through the fixed connection of the locking piece, the fixed connection with a power transmission pole and the stable operation of the insulation cross arm 20 are facilitated, the insulation cross arm 20 can be directly connected with the power transmission pole at the moment, the assembling before the installation of the insulation cross arm is omitted, and the site installation is convenient and fast and high in efficiency.

Example three:

as shown in fig. 10 to 13, the insulating cross arm 30 of the present embodiment has a similar structure to the insulating cross arm 20, except for the folding manner between the first cross arm 31, the second cross arm 32, and the top phase cross arm 33. Specifically, a first root link fitting 700 is disposed at one end of the first cross arm 31, a second root link fitting 800 is disposed at one end of the second cross arm 32, and a third root link fitting 900 is disposed at one end of the top-phase cross arm 33. A first pin hole 732 is formed in the end of the first root link fitting 700 far from the first cross arm 31, a second pin hole 832 is formed in the end of the second root link fitting 800 far from the second cross arm 32, a third pin hole 932 and a fourth pin hole 942 are formed in the end of the third root link fitting 900 far from the top-phase cross arm 33, the third pin hole 932 is close to the first cross arm 31, and the fourth pin hole 942 is close to the second cross arm 32. After the first pin hole 732 and the third pin hole 932 are correspondingly matched, the top phase cross arm 33 is hinged with the first cross arm 31 through the first pin 004, and after the second pin hole 832 and the fourth pin hole 942 are correspondingly matched, the top phase cross arm 33 is hinged with the second cross arm 32 through the second pin 005.

Further, as shown in fig. 11, the first root link fitting 700 includes a body 710, a first fixing plate 720, a link lug 730, and a link lug 740. The first fixing plate 720 is a square flat plate and is located at an end of the first root connecting hardware 700 away from the first cross arm 31, a plate surface of the first fixing plate 720 is vertically arranged, a first fixing hole 721 is arranged on the first fixing plate 720, a penetrating direction of the first fixing hole 721 is perpendicular to the plate surface of the first fixing plate 720, and a circle center of the first fixing hole 721 is located in a horizontal plane where an axis of the first cross arm 31 is located. Body 710 includes upper surface 711 and lower surface 712 that relative setting, engaging lug 730 and engaging lug 740 are square flat board, the symmetry sets up respectively on upper surface 711 and lower surface 712, the equal vertical setting of face of engaging lug 730 and engaging lug 740, be equipped with connecting hole 731 on the engaging lug 730, be equipped with connecting hole 741 on the engaging lug 740, the through direction of connecting hole 731 is perpendicular with the face of engaging lug 730, the through direction of connecting hole 741 is perpendicular with the face of engaging lug 740, still be equipped with first pinhole 732 on the engaging lug 730, first pinhole 732 is kept away from first cross arm 31 and is set up, the through direction of first pinhole 732 is perpendicular with the face of engaging lug 730.

As shown in fig. 12, the second root link fitting 800 and the first root link fitting 700 have similar structures, and specifically include a body 810, a second fixing plate 820, a link lug 830, and a link lug 840. The second fixing plate 820 is a square flat plate and is located at an end portion, far away from the second cross arm 32, of the second root connecting hardware 800, a plate surface of the second fixing plate 820 is vertically arranged, a second fixing hole 821 is formed in the second fixing plate 820, a penetrating direction of the second fixing hole 821 is perpendicular to the plate surface of the second fixing plate 820, and a circle center of the second fixing hole 821 is located in a horizontal plane where an axis of the second cross arm 32 is located. Body 810 includes relative upper surface 811 and lower surface 812 who sets up, engaging lug 830 and engaging lug 840 are square flat board, the symmetry sets up respectively on upper surface 811 and lower surface 812, the equal vertical setting of face of engaging lug 830 and engaging lug 840, be equipped with connecting hole 831 on the engaging lug 830, be equipped with connecting hole 841 on the engaging lug 840, the through direction of connecting hole 831 is perpendicular with the face of engaging lug 830, the through direction of connecting hole 841 is perpendicular with the face of engaging lug 840, still be equipped with second pinhole 832 on the engaging lug 830, second cross arm 32 setting is kept away from to second pinhole 832, the through direction of second pinhole 832 is perpendicular with the face of engaging lug 830.

As shown in fig. 13, the third root link fitting 900 includes a body 910, a third fixing plate 920, a link lug 930, and a link lug 940. The third fixing plate 920 is a square flat plate, and is located the end of the third connecting fitting 900 far from the top-phase cross arm 33, the plate surface of the third fixing plate 920 is vertically arranged, the third fixing plate 920 is provided with a third fixing hole 921, the penetrating direction of the third fixing hole 921 is perpendicular to the plate surface of the third fixing plate 920, and the circle center of the third fixing hole 921 is located on the plane perpendicular to the axis of the top-phase cross arm 33. The body 910 comprises a side face 911 and a side face 912 which are arranged oppositely, two square flat plates are symmetrically arranged on the side face 911 and the side face 912 respectively through a connecting lug 930 and a connecting lug 940, the plate faces of the connecting lug 930 and the connecting lug 940 are all vertically arranged, a third pin hole 932 is formed in the connecting lug 930, a fourth pin hole 942 is formed in the connecting lug 940, the penetrating direction of the third pin hole 932 is perpendicular to the plate face of the connecting lug 930, and the penetrating direction of the fourth pin hole 942 is perpendicular to the plate face of the connecting lug 940.

After the first pin hole 732 and the third pin hole 932 are correspondingly matched, the top phase cross arm 33 is hinged with the first cross arm 31 through a first pin shaft 004, so that the top phase cross arm 33 and the first cross arm 31 can rotate relatively freely; after the second pin hole 832 and the fourth pin hole 942 are correspondingly matched, the top phase cross arm 33 is hinged with the second cross arm 32 through the second pin shaft 005, so that the top phase cross arm 33 and the second cross arm 32 can rotate relatively freely. The number of the first fixing plate 720, the second fixing plate 820 and the third fixing plate 920 is one, and the third fixing plate 920 is inserted between the first fixing plate 720 and the second fixing plate 820, and the first cross arm 31, the second cross arm 32 and the top phase cross arm 33 are stably connected by the locking member.

The insulating cross arm 30 provided in this embodiment is in a triangular arrangement, that is, a combined cross arm of the first cross arm 31, the second cross arm 32 and the top phase cross arm 33, and is used for supporting a wire of a single-loop power transmission line, and the function of the insulating cross arm 30 is the same as that of the insulating cross arm 20 in the second embodiment, and details thereof are not described here. The top phase cross arm 33, the first cross arm 31 and the second cross arm 32 which are hinged to each other can rotate relatively freely, an included angle between the top phase cross arm 33 and the first cross arm 31 is assumed to be beta, an included angle between the top phase cross arm 33 and the second cross arm 32 is assumed to be gamma, and the sum of beta and gamma is less than or equal to 180 degrees. In one embodiment, when in transportation, β ═ γ ═ 0 °, that is, the top-phase cross arm 33, the first cross arm 31, and the second cross arm 32 are completely folded through the hinge structure, so that the transportation volume can be reduced, the transportation cost can be reduced, and the box transportation is facilitated; the first cross arm 31, the second cross arm 32 and the top phase cross arm 33 are unfolded to 90 degrees at the time of installation on site, that is, the first cross arm 31, the second cross arm 32 and the top phase cross arm 33 are completely unfolded, and at this time, the first fixing hole 721, the second fixing hole 821 and the third fixing hole 921 are correspondingly matched and fixedly connected through the locking member, so that the first cross arm 31, the second cross arm 32 and the top phase cross arm 33 are fixedly connected, and the axis of first cross arm 31 and the axis of second cross arm 32 are parallel to each other, and the axis of top looks cross arm 33 is perpendicular with the axis of first cross arm 31, and insulating cross arm 30 after the expansion can't rotate freely relatively, be convenient for with the fixed connection of transmission pole and the firm operation of insulating cross arm 30, insulating cross arm 30 at this moment can directly be connected with the transmission pole, has saved the piece together equipment before the installation of insulating cross arm, makes on-the-spot installation convenient and fast, efficient.

Example four:

the embodiment provides a power transmission pole, which comprises a pole body and the insulating cross arms fixed on the pole body in the embodiments 1 to 3, wherein the insulating cross arms are combined cross arms, and are folded in a hinged mode in the transportation process, so that the transportation volume can be reduced, the transportation cost can be reduced, and the boxing transportation is facilitated; only need when the field installation expand and fixed connection this insulating cross arm, through body of rod mounting and transmission of electricity pole fixed connection, saved the equipment of piecing together before the installation of insulating cross arm, make field installation convenient and fast, efficient.

While the invention has been described with reference to the above disclosure, it will be understood by those skilled in the art that various changes and modifications in the above-described structures and materials, including combinations of features disclosed herein either individually or in any combination, will be apparent to one skilled in the art from the disclosure herein. These variants and/or combinations fall within the technical field of the present invention and are intended to be protected by the following claims.

Claims (10)

1. The utility model provides an insulating cross arm, its characterized in that, is including relative first cross arm and the second cross arm that sets up, a tip of first cross arm sets up first root link fitting, a tip of second cross arm sets up second root link fitting, first root link fitting is kept away from the tip of first cross arm sets up first pinhole, second root link fitting is kept away from the tip of second cross arm sets up the second pinhole, first pinhole with the second pinhole corresponds behind the cooperation will through first round pin axle first cross arm with the second cross arm is articulated.

2. The insulating cross arm of claim 1, wherein a first fixing plate is disposed at an end of the first root connecting fitting far away from the first cross arm, a second fixing plate is disposed at an end of the second root connecting fitting far away from the second cross arm, a first fixing hole is disposed on the first fixing plate, a second fixing hole is disposed on the second fixing plate, and the first fixing hole and the second fixing hole are correspondingly matched and fixedly connected through a locking member, so that the first cross arm and the second cross arm are fixedly connected and an axis of the first cross arm and an axis of the second cross arm are located in the same plane.

3. The insulating cross arm of claim 2, wherein the first fixing plate and the second fixing plate are both L-shaped, the center of the first fixing hole is located in a vertical or horizontal plane where the axis of the first cross arm is located, a connecting line formed by the center of the first pin hole and the center of the first fixing hole is perpendicular to the axis of the first cross arm, the center of the second fixing hole is located in a vertical or horizontal plane where the axis of the second cross arm is located, and a connecting line formed by the center of the second pin hole and the center of the second fixing hole is perpendicular to the axis of the second cross arm.

4. The insulating cross arm of claim 2, wherein the number of the first fixing plate and the second fixing plate is one, and a baffle plate is arranged at the end of the first fixing plate far away from the first pin hole and is vertically arranged at the side of the first fixing plate close to the second fixing plate.

5. The insulating cross arm of claim 2, wherein the number of the first fixing plates and the second fixing plates is two, two of the first fixing plates and two of the second fixing plates are arranged in parallel, and at least one of the first fixing plates is inserted between the two second fixing plates.

6. The insulating cross arm of claim 1, wherein the insulating cross arm comprises a top-phase cross arm arranged perpendicular to the first cross arm, a third connecting fitting is arranged at one end of the top-phase cross arm, a third pin hole is arranged at the end of the third connecting fitting far away from the top-phase cross arm, a fourth pin hole is arranged on the first cross arm, and the top-phase cross arm is hinged with the first cross arm through a second pin shaft after the third pin hole and the fourth pin hole are matched.

7. The insulating cross arm of claim 6, wherein a threaded hole is formed in an end of the third connecting fitting away from the top phase cross arm, and the top phase cross arm is fixedly connected with the first cross arm and the second cross arm after being matched with the threaded hole and a fastener.

8. The insulating cross arm of claim 6, wherein the other end of the top phase cross arm is provided with a top phase wire fitting, the top phase wire fitting comprises a connecting part connected with the body of the top phase cross arm and a wire winding part arranged on the connecting part, and the diameter of the wire winding part is smaller than that of the connecting part.

9. The insulating cross arm of claim 8, wherein a support platform is disposed at an end of the winding portion away from the connecting portion, and a wire groove is disposed on the support platform.

10. The utility model provides a power transmission pole, includes the body of rod and fixes insulating cross arm on the body of rod, its characterized in that: the insulating cross arm is as claimed in any one of claims 1 to 9.

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