A cross arm for a power transmission tower

Abstract

The utility model belongs to the field of electric power construction device especially relates to a cross arm for transmission tower, has two first cross poles (1), its characterized in being with two second cross poles (2), first cross pole and second cross pole are parallel two by two, and is equipped with a telescopic connecting assembly (4) between corresponding first cross pole and second cross pole, and is equipped with a hoop (3) below first cross pole and second cross pole, the first cross pole is constituted by first cross pole main part, and a plurality of mounting holes (13) are formed on first cross pole main part along the length direction, and second cross pole and corresponding first cross pole are same, and the telescopic connecting (4) assembly is constituted by two connecting rods (41), and two connecting rods are X-shaped intersection and are rotatably connected with intersection point, and the telescopic connecting assembly is slidably connected in the inboard of first cross pole and second cross pole and can be positioned and fixed, the utility model has the beneficial effects such as simple structure, telescopic, telescopic interval controllable, convenient to carry, structural integration, installation efficiency high.

Description

Technical Field

[0001] This invention belongs to the field of power construction equipment, and in particular relates to a crossarm for transmission towers. Background Technology

[0002] Crossarms are an important component of towers. Their function is to install insulators and fittings to support conductors and lightning protection wires and to maintain a certain safe distance between them as required.

[0003] In the prior art, CN217872106U discloses an adjustable crossarm for transmission line towers, relating to the field of transmission line tower technology. This addresses the problem of inconvenient cable suspension and fixing caused by the poor flexibility in length and width adjustment of existing crossarms for transmission line towers. The crossarm adjustment connecting column is provided between two crossarms, and a clamping hoop is provided between the two crossarm adjustment connecting columns. Each crossarm has a sliding adjustment groove at its upper end, an insulator mounting base on its outer side, a cable guide plate inside each crossarm adjustment connecting column, a telescopic sleeve on the outer side of the cable guide plate, a locking bolt on the outer side of the telescopic sleeve, a bolt sliding groove on the inner pipe of the telescopic sleeve, and telescopic winding cables at both ends of the outer side of the locking bolt.

[0004] The aforementioned existing technology has the following drawback: it cannot adjust the distance between the two crossbars. Summary of the Invention

[0005] To address the aforementioned problems, the purpose of this invention is to disclose a crossarm for power transmission towers, which is achieved through the following technical solution.

[0006] A crossarm for a power transmission tower has two first crossarms, characterized in that it also has two second crossarms, the first crossarms and the second crossarms are parallel to each other, a telescopic connection assembly is provided between the corresponding first crossarms and the second crossarms, and a clamp is provided below the first crossarms and the second crossarms; The first crossbar is composed of a first crossbar body, and multiple mounting holes are formed on the first crossbar body along the length direction for mounting insulators. The second crossbar is the same as the corresponding first crossbar and is placed rotated 180°. A fixing bolt is fixed at one end of the two pairs of crossbars and the second crossbar near the middle. The telescopic connection assembly consists of two connecting rods that intersect in an X-shape and are rotatably connected at the intersection point. The telescopic connection assembly is slidably connected to the inner side of the first and second crossbars and can be positioned and fixed.

[0007] The aforementioned crossarm for a transmission tower is characterized in that a second groove is formed along the length direction on the left side of the front side of the first crossarm body, and a first groove parallel to the second groove is formed on the right side of the front side of the first crossarm body. A second limiting elongated hole communicating with the second groove is formed on the upper surface of the first crossarm body, and a first limiting elongated hole communicating with the first groove is formed on the lower surface of the first crossarm body. A first slider is pivotally connected to each of the two left ends of the telescopic connecting assembly, and a second slider is pivotally connected to each of the two right ends. The first slider and the second slider are provided with limiting bolts that can be fixed to the corresponding first crossarm and the second crossarm. The first slider is slidably connected to the first groove, and the second slider is slidably connected to the corresponding second groove. The limiting bolts are located in the corresponding second limiting elongated holes and the first limiting elongated holes, and can be fixed by engagement with nuts.

[0008] The crossarm for a power transmission tower described above is characterized in that one end of the first and second sliding grooves is connected to the outside.

[0009] The crossarm for a transmission tower described above is characterized in that the clamp is composed of two opposing clamp bodies, each clamp body consisting of a second limiting rod and a clamp body. The second limiting rod is fixedly connected to the outer wall of the right end of the clamp body, and the second limiting rod forms multiple limiting circular holes at intervals along its length. Fixing bolts are inserted into the corresponding limiting circular holes and can be fixed by engagement with nuts.

[0010] The aforementioned crossarm for a transmission tower is characterized in that a second groove is formed along the length direction on the left side of the front side of the first crossarm body; a second limiting elongated hole communicating with the second groove is formed on the upper surface of the first crossarm body; a second groove is also formed on the side of the second crossarm body opposite to the second groove; and a second limiting elongated hole communicating with the corresponding second groove is formed on the lower surface of the first crossarm body. The telescopic connection assembly consists of two connecting rods, which intersect in an X-shape and are rotatably connected at the intersection point. A first slider is pivotally connected to each of the two left ends of the telescopic connection assembly, and a second slider is pivotally connected to each of the two right ends. A limiting bolt is provided on the first slider, which is slidably connected to the second groove. The two second sliders are respectively fixedly connected to the first and second crossarms where the corresponding second grooves are located. The limiting bolt is located in the corresponding second limiting elongated hole and can be fixed by engagement with a nut.

[0011] The crossarm for a transmission tower described above is characterized in that the clamp is composed of two opposing clamp bodies, each clamp body consisting of a second limiting rod and a clamp body. The clamp body is fixedly connected to the lower part of the second limiting rod. The second limiting rod forms multiple first limiting grooves with openings on one side at intervals along its length. One end of the second limiting rod is pivotally connected to the lower side wall of the second crossarm near the second slider. A fixing bolt that can be inserted into the first limiting groove is provided at the position opposite to the pivot of the second crossarm on the lower wall of the first crossarm.

[0012] The crossarm for a power transmission tower described above is characterized in that a telescopic limiting block is provided on the right side of the fixing bolt, and the distance between the telescopic limiting block and the fixing bolt is equal to the distance between the bottom of the first limiting groove and the side opposite to the opening of the first limiting groove.

[0013] The crossarm for a power transmission tower described above is characterized in that a second limiting groove is formed on the side of the second limiting rod opposite to the opening of the first limiting groove, and a first limiting rod that can be inserted into the second limiting groove is also provided on the lower wall of the second crossarm.

[0014] The crossarm for a power transmission tower described above is characterized in that one end of the second sliding groove is connected to the outside, and the second sliding block is fixed by plug-in or bolt connection.

[0015] The crossarm for a power transmission tower described above is characterized in that the sum of the widths of the first crossarm and the second crossarm is greater than the width of the clamp.

[0016] Therefore, the present invention has the advantages of simple structure, scalability, controllable scalability distance, easy portability, integrated structure, and high installation efficiency. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the first crossbar in Embodiment 1 of the present invention.

[0019] Figure 3 This is a three-dimensional structural diagram of the bottom of the first crossbar in Embodiment 1 of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the telescopic connection component according to Embodiment 1 of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the clamp according to Embodiment 1 of the present invention.

[0022] Figure 6 This is a schematic diagram of a single-sided three-dimensional structure of Embodiment 2 of the present invention.

[0023] Figure 7 This is a bottom view of one side of Embodiment 2 of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the clamp according to Embodiment 2 of the present invention.

[0025] In the diagram: 1. First crossbar, 11. First crossbar body, 12. First slide groove, 13. Mounting hole, 14. Second slide groove, 15. Second limiting elongated hole, 17. First limiting elongated hole, 18. Telescopic limiting block, 19. First limiting rod, 2. Second crossbar, 3. Clamp, 31. Second limiting rod, 32. Limiting round hole, 33. Clamp body, 34. First limiting groove, 35. Second limiting groove, 4. Telescopic connecting assembly, 41. Connecting rod, 42. First slider, 43. Second slider, 44. Limiting bolt, 5. Fixing bolt. Detailed Implementation

[0026] Example 1: Please see Figure 1 A crossarm for a power transmission tower has two first crossarms 1, characterized in that it also has two second crossarms 2, the first crossarms 1 and the second crossarms 2 are parallel to each other, a telescopic connection component 4 is provided between the corresponding first crossarms 1 and the second crossarms 2, and a clamp 3 is provided below the first crossarms 1 and the second crossarms 2. like Figure 2 and Figure 3 The first crossbar 1 is composed of a first crossbar body 11. Multiple mounting holes 13 are formed on the first crossbar body 11 along the length direction for mounting insulators. A second sliding groove 14 is formed on the left side of the front side of the first crossbar body 11 along the length direction. A first sliding groove 12 parallel to the second sliding groove 14 is formed on the right side of the front side of the first crossbar body 11. A second limiting elongated hole 15 communicating with the second sliding groove 14 is formed on the upper surface of the first crossbar body 11. A first limiting elongated hole 17 communicating with the first sliding groove 12 is formed on the lower surface of the first crossbar body 11. The second crossbar 2 is the same as the corresponding first crossbar 1 and is placed rotated 180°. A fixing bolt 5 is fixed at one end of each pair of first crossbar 1 and second crossbar 2 near the middle. like Figure 4 The telescopic connecting assembly 4 consists of two connecting rods 41, which are X-shaped and rotatably connected at the intersection point. Each of the two left ends of the telescopic connecting assembly 4 is pivotally connected to a first slider 42, and each of the two right ends is pivotally connected to a second slider 43. The first slider 42 and the second slider 43 are provided with limiting bolts 44. The first slider 42 is slidably connected to the first slide groove 12, and the second slider 43 is slidably connected to the corresponding second slide groove 14. The limiting bolts 44 are located in the corresponding second limiting elongated holes 15 and the first limiting elongated holes 17, and can be fixed by engaging with nuts. like Figure 5The clamp 3 is composed of two opposing clamp bodies. Each clamp body is composed of a second limiting rod 31 and a clamp body 33. The second limiting rod 31 is fixedly connected to the outer wall of the right end of the clamp body 33. The second limiting rod 31 forms multiple limiting holes 32 at intervals along the length direction. The fixing bolt 5 is inserted into the corresponding limiting hole 32 and can be fixed by engaging with a nut.

[0027] To facilitate the replacement of the telescopic connection component 4, one end of the first slide groove 12 and the second slide groove 14 are connected to the outside.

[0028] Example 2: Please see Figures 6 to 8 and refer to Figure 4 A crossarm for a power transmission tower has two first crossarms 1, characterized in that it also has two second crossarms 2, the first crossarms 1 and the second crossarms 2 are parallel to each other, a telescopic connection component 4 is provided between the corresponding first crossarms 1 and the second crossarms 2, and a clamp 3 is provided below the first crossarms 1 and the second crossarms 2. The first crossbar 1 is composed of a first crossbar body 11. Multiple mounting holes 13 are formed on the first crossbar body 11 along the length direction for mounting insulators. A second groove 14 is formed on the left side of the front side of the first crossbar body 11 along the length direction. A second limiting elongated hole 15 communicating with the second groove 14 is formed on the upper surface of the first crossbar body 11. A second groove 14 is also formed on the side of the second crossbar 2 opposite to the second groove 14 of the first crossbar body 11. A second limiting elongated hole 15 communicating with the corresponding second groove 14 is formed on the lower surface of the first crossbar body 11. The telescopic connecting assembly 4 consists of two connecting rods 41, which intersect in an X-shape and are rotatably connected at the intersection point. Each of the two left ends of the telescopic connecting assembly 4 is pivotally connected to a first slider 42, and each of the two right ends is pivotally connected to a second slider 43. The first slider 42 is provided with a limiting bolt 44. The first slider 42 is slidably connected to the second slide groove 14. The two second sliders 43 are respectively fixedly connected to the first crossbar 1 and the second crossbar 2 where the corresponding second slide groove 14 is located. The limiting bolt 44 is located in the corresponding second limiting elongated hole 15 and can be fixed by engaging with a nut. The clamp 3 is composed of two opposing clamp bodies, each consisting of a second limiting rod 31 and a clamp body 33. The clamp body 33 is fixedly connected to the lower part of the second limiting rod 31. The second limiting rod 31 forms multiple first limiting grooves 34 with openings on one side at intervals along its length. A second limiting groove 35 is formed on the side of the second limiting rod 31 opposite to the opening of the first limiting groove 34. One end of the second limiting rod 31 is pivotally connected to the lower side wall of the second crossbar 2 near the second slider 43. A fixing bolt 5 that can be inserted into the first limiting groove 34 is provided at the position opposite to the pivot of the second crossbar 2 on the lower wall of the first crossbar 1. A telescopic limiting block 18 is also provided on the right side of the fixing bolt 5. The distance between the telescopic limiting block 18 and the fixing bolt 5 is equal to the distance between the bottom of the first limiting groove 34 and the side opposite to the opening of the first limiting groove 34. A first limiting rod 19 that can be inserted into the second limiting groove 35 is also provided on the lower wall of the second crossbar 2.

[0029] To facilitate the replacement of the telescopic connection component 4, one end of the second slide groove 14 is connected to the outside, and the second slider 43 is fixed by plug-in or bolt connection.

[0030] The crossarm for a power transmission tower described above is characterized in that the sum of the widths of the first crossarm 1 and the second crossarm 2 is greater than the width of the clamp body.

[0031] In this embodiment, the first horizontal bar 1 and the second horizontal bar 2 can be fixed by rotating the second limiting rod 31 and engaging the fixing bolt 5. Engaging the first limiting rod 19 allows the second limiting rod 31 to be retracted when not in use. Compared with the use of nuts for fixing in Embodiment 1, this method requires less time and has higher installation efficiency. Furthermore, the integrated design of the first limiting rod 19 and the first horizontal bar 1 makes it easy to carry and prevents parts from falling and causing unnecessary personal injury during high-altitude operations due to improper operation.

[0032] In this application, the distance between the first horizontal bar 1 and the second horizontal bar 2 is telescopic. When not in use, the distance between the first horizontal bar 1 and the second horizontal bar 2 is reduced, thereby reducing the space occupied by this application and allowing construction personnel to carry a larger quantity at a time. The distance between the first horizontal bar 1 and the second horizontal bar 2 is adjustable, which is beneficial for adjusting the cable spacing. The double fixation by the limit bolt 44 and the connecting rod 41 prevents the first horizontal bar 1 and the second horizontal bar 2 from moving during operation and causing line faults.

[0033] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A crossarm for a power transmission tower, comprising two first crossarms (1), characterized in that... It also has two second crossbars (2), the first crossbar (1) and the second crossbar (2) are parallel to each other, and a telescopic connection assembly (4) is provided between the corresponding first crossbar (1) and the second crossbar (2), and a clamp (3) is provided below the first crossbar (1) and the second crossbar (2); The first crossbar (1) is composed of a first crossbar body (11), and multiple mounting holes (13) are formed on the first crossbar body (11) along the length direction. The second crossbar (2) is the same as the corresponding first crossbar (1) and is placed by rotating 180°. The telescopic connection assembly (4) consists of two connecting rods (41). The two connecting rods (41) intersect in an X shape and are rotatably connected at the intersection point. The telescopic connection assembly (4) is slidably connected to the inner side of the first crossbar (1) and the second crossbar (2) and can be positioned and fixed. The clamp (3) is composed of two opposing clamp bodies. The clamp body is composed of a second limiting rod (31) and a clamp body (33). The clamp body (33) is fixedly connected to the lower part of the second limiting rod (31). The second limiting rod (31) forms multiple first limiting grooves (34) with openings on one side at intervals along the length direction. One end of the second limiting rod (31) is pivotally connected to the lower side wall of the second crossbar (2) near the second slider (43). A fixing bolt (5) that can be inserted into the first limiting groove (34) is provided at the position where the lower wall of the first crossbar (1) is opposite to the pivot of the second crossbar (2). A telescopic limiting block (18) is also provided on the right side of the fixing bolt (5). The distance between the telescopic limiting block (18) and the fixing bolt (5) is equal to the distance between the bottom of the first limiting groove (34) and the opposite side of the opening of the first limiting groove (34). A second limiting groove (35) is formed on the side opposite to the opening of the first limiting groove (34) on the second limiting rod (31), and a first limiting rod (19) that can be inserted into the second limiting groove (35) is also provided on the lower wall of the second crossbar (2).

2. A crossarm for a transmission tower according to claim 1, characterized in that... A second groove (14) is formed along the length direction on the left side of the front side of the first crossbar body (11). A second limiting elongated hole (15) communicating with the second groove (14) is formed on the upper surface of the first crossbar body (11). A second groove (14) is also formed on the side of the second crossbar (2) opposite to the second groove (14) of the first crossbar body (11). A second limiting elongated hole (15) communicating with the corresponding second groove (14) is formed on the lower surface of the first crossbar body (11). The telescopic connecting assembly (4) is composed of two connecting rods (41). The two connecting rods (41) are X-shaped and rotatably connected at the intersection point. The two left ends of the telescopic connecting assembly (4) are each pivotally connected to a first slider (42), and the two right ends are each pivotally connected to a second slider (43). The first slider (42) is provided with a limit bolt (44). The first slider (42) is slidably connected to the second slide groove (14). The two second sliders (43) are respectively fixedly connected to the first crossbar (1) and the second crossbar (2) where the corresponding second slide groove (14) is located. The limit bolt (44) is located in the corresponding second limit elongated hole (15).

3. A crossarm for a transmission tower according to claim 2, characterized in that... The sum of the widths of the first crossbar (1) and the second crossbar (2) is greater than the width of the clamp body.

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