Single-seat double-arm cross arm

Abstract

The utility model relates to a single seat double -arm cross arm, including the pole body connecting seat, one side of pole body connecting seat is fixedly connected with the pole body, and the other side symmetry is equipped with two cantilevers, and the mounting surface of two cantilevers is parallel with horizontal plane, and one end of two cantilevers is close to each other and is fixedly installed on pole body connecting seat, and the other end is away from each other to form an installation included angle between two cantilevers, the end of two cantilevers is equipped with the cable head installation support, is provided with three cable head mounting seats on the cable head support, and the cable head mounting seat of middle position is located on the symmetry axis of two cantilevers, and the cable head mounting seat on both sides is symmetrically installed on both sides of symmetry axis. In the utility model, the structure design of single seat double -arm is adopted, and the installation position of two cantilevers is symmetrical, the angle between two cantilevers is adjustable, the stress of platform is balanced, and the support under platform is not used to add, the influence of pole body machining error to assembly is reduced, and the cable head distribution is balanced, and the cable platform eccentricity can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of power transmission technology, and in particular to a single-seat double-arm crossarm. Background Technology

[0002] A crossarm is installed on a utility pole, and the cable ends of the line are installed on the crossarm to support the overhead power lines. A typical crossarm structure is as follows: Figure 1 As shown, the crossarm consists of a cantilever 210, a pole connecting seat 200, and a cable head mounting bracket 300. The crossarm adopts a single cantilever design, with one end of the cantilever 210 installed in the middle of the cable head mounting bracket 300. Cable heads are installed in groups of three on the cable head mounting bracket 300. This crossarm structure has the following defects in the application of cable platform structures: 1. The installation location of cable heads is limited; cable heads cannot be symmetrically distributed. Only one cable head can be placed on one side of the cantilever, and two on the other side. Figure 1 In the crossarm structure shown, two cables are installed on the crossarm. There are 6 cable head mounting seats distributed on the cable head mounting bracket 300, namely 2 left mounting seats 301, 2 middle mounting seats 302 and 2 right mounting seats 303. The position of the middle mounting seats 302 is off the center line of the crossarm, and the position distribution cannot be symmetrical.

[0003] 2. Figure 1 The crossarm structure shown has an unstable structure because the position of the middle mounting base 302 is off-center from the centerline of the crossarm.

[0004] 3. Cable platforms using this type of crossarm require additional supports to be installed below the platform to improve structural stability. However, the installation of supports will occupy a large amount of ground space, thus limiting the application range of this type of crossarm structure.

[0005] To solve the above problems, it is necessary to upgrade and transform the existing crossarm structure to adapt to various construction scenarios. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a single-seat double-arm crossarm with stable structure, balanced distribution of cable equipment and easy installation.

[0007] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: a single-seat double-arm crossarm, including a pole connecting seat, one side of which is fixedly connected to the pole body, and two cantilever arms are symmetrically installed on the other side. The mounting surfaces of the two cantilever arms are parallel to the horizontal plane. One end of the two cantilever arms is close to each other and fixedly installed on the pole connecting seat, while the other ends are far apart, forming an installation angle between the two cantilever arms. Cable head mounting brackets are installed at the ends of the two cantilever arms. At least one set of cable head mounting seats is provided on the cable head brackets. Each set of cable head mounting seats has three seats. The cable head mounting seat in the middle position is located on the axis of symmetry of the two cantilever arms, and the cable head mounting seats on both sides are symmetrically installed on both sides of the axis of symmetry.

[0008] As a preferred technical solution, the rod connecting seat includes a middle upright plate arranged along the extension direction of the rod and two end plates installed on the same side. The end plates are fixedly connected to the two ends of the middle upright plate near the rod. Two cantilever arms are installed on the other side of the middle upright plate.

[0009] As a further improvement, a first supporting rib is symmetrically provided between the end plate and the middle upright plate. The first supporting rib has an inclined surface that abuts against the surface of the rod body. The inclination direction of the inclined surfaces of the two first supporting ribs and the included angle between them are adapted to the edges of the outer surface of the rod body.

[0010] As another preferred technical solution, an "L"-shaped cantilever bracket is installed on the other side of the intermediate upright plate. The vertical side plate of the cantilever bracket is fixedly installed on the intermediate upright plate, and the cantilever is supported on the horizontal side plate of the cantilever bracket.

[0011] As a further improvement, two adjusting bolts are symmetrically installed on the cantilever bracket. The adjusting bolts pass through the transverse side plate of the cantilever bracket from bottom to top and are fixed to the transverse side plate by a first set nut. A rotating bushing is fitted on the adjusting bolt. A guide plate is fixedly connected to the outer wall of the rotating bushing. The outer surface of the guide plate is in contact with one of the side wall surfaces of the cantilever. The guide plate is fixedly installed on the side wall of the cantilever. The rotating bushing is rotated to adjust the tilt angle of the cantilever.

[0012] As a further improvement, an upper cover plate is also installed above the cantilever bracket. The top of the rotating shaft sleeve is provided with a prismatic positioning part. The upper cover plate is provided with a positioning hole that matches the shape of the positioning part. The positioning part is engaged in the positioning hole. The end of the adjusting bolt passes through the positioning part of the rotating shaft sleeve and extends upwards out of the upper cover plate. It is fixedly connected to the upper cover plate by a second set nut. One side of the upper cover plate is attached to and welded to the intermediate upright plate.

[0013] As a further improvement, multiple second support ribs are welded to both the lower part of the cantilever bracket and the upper part of the cover plate.

[0014] As a preferred technical solution, multiple supporting angle steels are installed in parallel between the two cantilever arms, and a supporting plate is fixedly installed above the supporting angle steels.

[0015] Due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this utility model, two cantilever arms are installed on a single rod connector. The installation positions of the two cantilever arms are symmetrical, making the double cantilever support structure more stable. The length of the cantilever arms extending out of the platform is shortened. The single-seat double cantilever structure design ensures that the platform is subjected to balanced forces and the structure is more stable.

[0016] The single-seat design allows the cantilever to be fixed in position on the pole connecting seat, which can then be directly installed on the pole. This eliminates the need to install two crossarms separately on the pole. Instead, the crossarms are adjusted and installed on the pole connecting seat before being installed on the pole. Only one pole connecting seat is required, which reduces assembly difficulty, facilitates easy positioning, and eliminates interference between the two cantilever arms, thus minimizing the impact of pole machining errors on the assembly process.

[0017] Two cantilever arms are symmetrically installed on the pole connecting seat. The tilt angle between the two cantilever arms can be adjusted as needed and is not affected by bolt installation. The symmetrical installation of the cantilever arms on the pole connecting part can evenly distribute a group of three cable heads or two groups of six cable heads on the cable head mounting bracket, avoiding the cable platform from being eccentric. Moreover, no support needs to be installed under the platform, resulting in strong structural stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a crossarm structure in the prior art; Figure 2 This is a schematic diagram of the original design of an embodiment of this utility model; Figure 3 This is a structural schematic diagram of an embodiment of the present utility model; Figure 4 yes Figure 1 Top view; Figure 5 This is a three-dimensional structural schematic diagram of an embodiment of the present utility model; Figure 6This is a structural schematic diagram of the rod connecting seat in an embodiment of this utility model; Figure 7 This is a schematic diagram of the installation structure of the cantilever bracket and the rotating shaft sleeve in an embodiment of this utility model.

[0020] In the diagram: 100 - Pole body; 200 - Pole body connecting seat; 201 - Middle upright plate; 202 - End plate; 203 - First support rib plate; 204 - Cantilever bracket; 205 - Top cover plate; 206 - Second support rib plate; 210 - Cantilever; 211 - Adjusting bolt; 212 - Guide plate; 213 - Rotating bushing; 214 - Positioning part; 215 - Support angle steel; 216 - Support plate; 217 - First set nut; 218 - Second set nut; 300 - Cable head mounting bracket; 301 - Left side mounting seat; 302 - Middle mounting seat; 303 - Right side mounting seat. Detailed Implementation

[0021] To address the issue of cable head misalignment in single-arm crossarm structures, this embodiment employs a double-cantilever crossarm structure. Figure 2 The diagram shows a double-seat, double-cantilever crossarm structure, which is the original design of this embodiment. In this structure, two cantilever arms 210 are respectively fixedly mounted on the pole body 100 via a pole body connecting seat 200. Cable head mounting brackets 300 are installed at the ends of the two cantilever arms 210. The double-cantilever structure allows for even distribution of cable heads, preventing platform eccentricity. However, during assembly, the installation angle of the two cantilever arms 210 is difficult to control: Firstly, the angle between the two cantilever arms 210 and the centerline of the pole body connecting seat 200 is inconvenient to adjust, causing the two cantilever arms 210 to... The symmetrical distribution adjustment of 0 is quite troublesome; secondly, when installing the pole connecting seat 200, since one pole connecting seat 200 is equipped with one cantilever 210, each pole connecting seat 200 also needs to be adapted to the corner of the pole body 100. When symmetrically installed, it is not easy to achieve the fit between the pole connecting seat 200 and the corner of the pole body; in addition, the pole connecting seat 200 needs to be fixed with bolts and nuts when installed. The included angle and installation distance between the two cantilever 210 have a related influence. The bolts are prone to interference during installation, making it inconvenient to install and fix the bolts and nuts.

[0022] To adjust the angle between the two cantilever arms 210 for easier assembly, the angles of the two cantilever arms 210 were adjusted and fixedly installed on a rod connecting seat 200, which connects them to the rod. After assembly testing, the final result is as follows: Figures 3 to 7 The structure of the single-seat double cantilever crossarm shown is as follows: The single-seat double-cantilever crossarm includes a pole connecting seat 200. One side of the pole connecting seat 200 is fixedly connected to the pole body 100, and two cantilever arms 210 are symmetrically installed on the other side. The mounting surfaces of the two cantilever arms 210 are parallel to the horizontal plane. One end of the two cantilever arms 210 is close to each other and fixedly installed on the pole connecting seat 200, while the other ends are far apart, forming an installation angle between the two cantilever arms 210. Cable head mounting brackets 300 are installed at the ends of the two cantilever arms 210, and at least one set of cable head mounting seats is provided on the cable head mounting brackets 300. Preferably, each group of cable head mounting seats has three seats. The cable head mounting bracket 300 can install one or two groups of cable head mounting seats. The cable head mounting seat in the middle position is located on the axis of symmetry of the two cantilever 210. The cable head mounting seats on both sides are symmetrically installed on both sides of the axis of symmetry. That is, the middle mounting seat 302 is located on the axis of symmetry of the cantilever 210, and the left mounting seat 301 and the right mounting seat 303 are symmetrically installed. Each group of cable head mounting seats is arranged on the same installation centerline.

[0023] The pole connecting seat 200 includes an intermediate upright plate 201 arranged along the extension direction of the pole and two end plates 202 installed on the same side. The end plates 202 are fixedly connected to the two ends of the intermediate upright plate 201 near the pole. Two cantilever arms 210 are installed on the other side of the intermediate upright plate 201.

[0024] A first support rib 203 is symmetrically provided between the end plate 202 and the middle upright plate 201. The first support rib 203 has an inclined surface that abuts against the surface of the rod. The inclination direction of the inclined surfaces of the two first support ribs 203 and the included angle between them are adapted to the edges of the outer surface of the rod. During installation, the two first support ribs 203 are exactly combined with the two symmetrical edges of the rod.

[0025] During assembly, the two cantilever arms 210 can be directly welded to the other side of the middle upright plate 201 after the angle is adjusted. In this embodiment, in order to facilitate the adjustment of the tilt angle of the cantilever arms 210, an "L"-shaped cantilever bracket 204 is installed on the other side of the middle upright plate 201. The vertical side plate of the cantilever bracket 204 is fixedly installed on the middle upright plate 201, and the cantilever arms 210 are supported on the horizontal side plate of the cantilever bracket 204.

[0026] Two adjusting bolts 211 are symmetrically installed on the cantilever bracket 204. The adjusting bolts 211 pass through the transverse side plate of the cantilever bracket 204 from bottom to top. The bolt head of the adjusting bolt 211 is located at the bottom of the transverse side plate. The screw of the adjusting bolt 211 passes through the transverse side plate from bottom to top and is fixed to the transverse side plate by the first set nut 217. A rotating shaft sleeve 213 is fitted on the adjusting bolt 211. A guide plate 212 is fixedly connected to the outer wall of the rotating shaft sleeve 213. The outer surface of the guide plate 212 is in contact with one of the side wall surfaces of the cantilever 210. Preferably, the outer surface of the guide plate 212 is in contact with the vertical side wall of the cantilever 210. The guide plate 212 is fixedly installed on the side wall of the cantilever 210 by the set bolt. The rotating shaft sleeve 213 is rotated to adjust the tilt angle of the cantilever 210.

[0027] A top cover plate 205 is also installed above the cantilever bracket 204. The top of the rotating shaft sleeve 213 is provided with a prismatic positioning part 214. The top cover plate 205 is provided with a positioning hole that matches the shape of the positioning part 214. The positioning part 214 is engaged in the positioning hole. One end of the adjusting bolt 211 passes through the positioning part 214 of the rotating shaft sleeve 213 and extends upward out of the top cover plate 205. It is fixedly connected to the top cover plate 205 by the second set nut 218. The side of the top cover plate 205 is attached to and welded to the middle vertical plate 201.

[0028] To enhance structural stability, multiple second support ribs 206 are welded below the cantilever bracket 204 and above the upper cover plate 205; multiple support angle steels 215 are installed in parallel between the two cantilever brackets 210, and a support plate 216 is fixedly installed above the support angle steels 215. The shape of the support plate 216 is an isosceles trapezoid that matches the included angle between the two cantilever brackets 210.

[0029] During assembly, the end plate 202 is welded to one side of the intermediate vertical plate 201 to form a rod connecting seat 200, and a first supporting rib plate 203 is welded onto the rod connecting seat 200. Then, the longitudinal side plate of the cantilever bracket 204 is welded to the intermediate vertical plate 201, and two adjusting bolts 211 are symmetrically installed by drilling holes in the transverse side plate of the cantilever bracket 204. The bolt heads of the adjusting bolts 211 are fixed to the transverse side plate by the first set nut 217, and a rotating shaft sleeve 213 is fitted on the outside of the screw of the adjusting bolt 211. A guide plate 212 is fixedly connected to the outer wall of the rotating sleeve 213. The guide plate 212 determines the tilt angle of the cantilever 210. Rotating the rotating sleeve 213 adjusts the position and direction of the guide plate 212 to determine the included angle between the two cantilever 210s. The guide plate 212 is fixed to the side wall of the cantilever 210. The end of the cantilever 210 is supported on the cantilever bracket 204. By drilling holes in the bottom surface of the cantilever bracket 204, the bottom surface of the cantilever 210 is fixed to the cantilever bracket 204 with bolts and nuts. The cantilever 210 is then fixed. After completion, the upper cover plate 205 is installed above the cantilever bracket 204. The positioning part 214 at the top of the rotating shaft sleeve 213 is inserted into the positioning hole of the upper cover plate 205. At this time, the position of the rotating shaft sleeve 213 is fixed and no longer rotates. The positioning hole of the positioning part 214 is a regular polygon. The number of sides of the regular polygon determines the adjustment accuracy of the cantilever 210. After the angle of the cantilever 210 is adjusted, the upper cover plate 205 is installed. The end of the adjusting bolt 211 passes through the upper cover plate 205 and is fixed by the second set nut 218. The side of the cover plate 205 is welded to the middle upright plate 201 of the pole connecting seat 200. Holes are drilled on the top surfaces of the upper cover plate 205 and the cantilever 210 to fix the top surface of the cantilever 210 to the upper cover plate 205. Cable head mounting brackets 300 are installed at the ends of the two cantilever 210. The two cantilever 210 are installed below the cable head mounting brackets 300 by clamps and connectors. During installation, the axis of symmetry of the two cantilever 210 coincides with the center line of the cable head mounting brackets 300 to avoid eccentricity. This completes the assembly of the single-seat double-arm crossarm. After assembly, the pole connecting seat 200 is installed on the pole body 100 by bolt connection or welding.

[0030] After assembly, the rod connecting seat 200 is installed on the rod by bolting or welding.

[0031] This utility model symmetrically installs two cantilever arms 210 on the pole connecting seat 200 by assembly and welding, so that the cable heads can be evenly distributed, the connection between the pole connecting seat 200 and the pole is more convenient, the included angle between the two cantilever arms 210 can be adjusted as needed, avoiding interference caused by bolt installation, and no support column needs to be installed under the single-seat double-arm crossarm. The structure is stable and reliable, ensuring the reliability and safety of power transmission.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A single-seat double-arm crossarm, comprising a rod connecting seat, characterized in that: One side of the pole connecting seat is fixedly connected to the pole body, and two cantilever arms are symmetrically installed on the other side. The mounting surfaces of the two cantilever arms are parallel to the horizontal plane. One end of the two cantilever arms is close to each other and fixedly installed on the pole connecting seat, while the other ends are far apart, forming an installation angle between the two cantilever arms. Cable head mounting brackets are installed at the ends of the two cantilever arms. At least one set of cable head mounting seats is provided on the cable head brackets. Each set of cable head mounting seats has three cable head mounting seats. The cable head mounting seat in the middle position is located on the axis of symmetry of the two cantilever arms, and the cable head mounting seats on both sides are symmetrically installed on both sides of the axis of symmetry.

2. A single-seat double-arm crossarm as described in claim 1, characterized in that: The rod connecting seat includes a middle upright plate arranged along the extension direction of the rod and two end plates installed on the same side. The end plates are fixedly connected to the two ends of the middle upright plate near the rod. Two cantilever arms are installed on the other side of the middle upright plate.

3. A single-seat double-arm crossarm as described in claim 2, characterized in that: The end plate and the middle upright plate are symmetrically provided with first supporting ribs. The first supporting rib has an inclined surface that abuts against the surface of the rod. The inclination direction of the inclined surfaces of the two first supporting ribs and the included angle between them are adapted to the edges of the outer surface of the rod.

4. A single-seat double-arm crossarm as described in claim 2 or 3, characterized in that: An "L"-shaped cantilever bracket is installed on the other side of the intermediate upright plate. The vertical side plate of the cantilever bracket is fixedly installed on the intermediate upright plate, and the cantilever is supported on the horizontal side plate of the cantilever bracket.

5. A single-seat double-arm crossarm as described in claim 4, characterized in that: Two adjusting bolts are symmetrically installed on the cantilever bracket. The adjusting bolts pass through the transverse side plate of the cantilever bracket from bottom to top and are fixed to the transverse side plate by the first set nut. A rotating bushing is fitted on the adjusting bolt. A guide plate is fixedly connected to the outer wall of the rotating bushing. The outer surface of the guide plate is in contact with one of the side wall surfaces of the cantilever. The guide plate is fixedly installed on the side wall of the cantilever. The rotating bushing is rotated to adjust the tilt angle of the cantilever.

6. A single-seat double-arm crossarm as described in claim 5, characterized in that: A top cover plate is also installed above the cantilever bracket. The top of the rotating shaft sleeve is provided with a prismatic positioning part. The top cover plate is provided with a positioning hole that matches the shape of the positioning part. The positioning part is engaged in the positioning hole. The end of the adjusting bolt passes through the positioning part of the rotating shaft sleeve and extends upwards out of the top cover plate. It is fixedly connected to the top cover plate by a second set nut. One side of the top cover plate is attached to and welded to the intermediate upright plate.

7. A single-seat double-arm crossarm as described in claim 6, characterized in that: Multiple second support ribs are welded to both the bottom of the cantilever bracket and the top of the cover plate.

8. A single-seat double-arm crossarm as described in claim 1, characterized in that: Multiple supporting angle steels are installed in parallel between the two cantilever arms, and a supporting plate is fixedly installed above the supporting angle steels.

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