Multi-loop cross arm device of high-voltage transmission tower

Abstract

The utility model provides a multi-loop cross arm device of a high-voltage transmission tower, which relates to the technical field of high-voltage transmission towers and comprises a first cross arm, one end of the first cross arm is connected with a connecting block in a sliding manner, one end of the connecting block penetrates through the first cross arm and is fixedly provided with a second cross arm, and insulators are arranged on the outer walls of the first cross arm and the second cross arm. When one end of a clamping column enters a clamping hole formed in the outer wall of a connecting block, the position of the connecting block can be limited, at the moment, a user can limit the position of a first supporting block by inserting a plug pin, so that the positions of a pulling plate and the clamping column are limited, and the situation that the clamping column shifts due to shaking of a first cross arm and a second cross arm is avoided; and when the length needs to be adjusted, the bolt can be inserted into another limiting hole formed in one end of the first supporting block, the position of the clamping column can be limited, a user does not need to pull the pulling plate all the time, and the position of the connecting block can be adjusted conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage transmission iron towers, in particular to a multi-circuit cross-arm device of a high-voltage transmission iron tower. Background Art

[0002] At present, the construction of long-distance transmission lines requires the installation of transmission towers, especially ultra-high voltage transmission towers above 1000KV. The installation of ultra-high voltage transmission towers mostly involves first fixing the tower body vertically on the ground, and then using a crane to lift the crossarm to the corresponding position of the tower body. The tower crossarm is an important component of the tower. Its function is to install insulators and hardware to support conductors and lightning conductors, and to keep them at a certain safety distance as required.

[0003] In the prior art, such as Chinese patent publication number CN219344230U, there is provided a multi-circuit cross-arm device for an ultra-high voltage transmission tower, comprising a connector and a telescopic mechanism, wherein the telescopic mechanism comprises a fixed cross-bar, wherein the fixed cross-bar is movably connected to a movable cross-bar via a telescopic slot, a pop-up hole is provided on the upper surface of the fixed cross-bar, and a mounting slot is provided at one end of the upper surface of the movable cross-bar, a pop-up member is movably mounted inside the mounting slot via a telescopic spring, and an anti-drop cap is fixedly mounted on the surface of the mounting slot. The utility model, by providing a telescopic mechanism, when the length of the cross-arm needs to be lengthened, the pop-up member is pressed so that the telescopic spring is compressed until the pop-up member is completely retracted into the pop-up hole, and then the movable cross-bar is held and slid along the telescopic slot of the fixed cross-bar to lengthen the cross-arm, and the length is stopped when the required length is reached, and the pop-up member automatically pops out from the corresponding pop-up hole to complete the telescopic operation, thereby avoiding the problem of the need to customize the length in the prior art and having a wider range of applications.

[0004] Although the multi-circuit cross-arm device of the high-voltage transmission tower in the above-mentioned patent is provided with a telescopic mechanism, when the length of the cross-arm needs to be lengthened, the pop-up piece is pressed to compress the telescopic spring until the pop-up piece is completely retracted into the pop-up hole, and then the movable cross steel is held and slid along the telescopic groove of the fixed cross steel to lengthen it. When the required length is reached, it stops, and the pop-up piece automatically pops out from the corresponding pop-up hole to complete the telescopic extension, which can avoid the problem of customized length in the prior art. However, it does not have a locking structure through the provision of the telescopic spring. When the cross-arm shakes, it will drive the telescopic spring to shake, resulting in unstable fixation, and its practicality is poor. In addition, the cross-arm in the above-mentioned device cannot adjust its angle according to actual installation requirements. When the transmission line passes through areas with complex terrain, such as mountainous areas, river valleys, etc., in order to make the line better adapt to terrain changes and avoid excessive bending or excessive tension of the line, it may be necessary to adjust the angle of the cross-arm device, which is less practical. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that in the prior art, the telescopic spring is not locked, and when the cross arm shakes, the telescopic spring will drive the shake, resulting in unstable fixation and the cross arm cannot adjust its angle according to actual installation requirements. A multi-circuit cross arm device for a high-voltage transmission tower is proposed.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a multi-circuit cross-arm device of a high-voltage transmission tower, including a first cross-arm, one end of the first cross-arm is slidably connected to a connecting block, one end of the connecting block passes through the first cross-arm and is fixed to the second cross-arm, insulators are provided on the outer walls of the first cross-arm and the second cross-arm, and a branch box is provided at the end of the insulator away from the first cross-arm or the second cross-arm, the first cross-arm is rotatably connected to the fixed block at one end away from the second cross-arm, a connecting column is fixed at one end of the first cross-arm, a first gear is rotatably connected to the inner wall of the fixed block, the first gear is meshed with the second gear, the end of the connecting column away from the first cross-arm passes through one side of the fixed block and is fixed to the first gear, a motor is installed on the inner wall of the fixed block, the output end of the motor is fixed to the second gear, and a snap structure for limiting the position of the connecting block is provided on the outer wall of the first cross-arm.

[0007] Preferably, the snap-fit structure includes a bracket fixed on the outer wall of the first cross arm, a card column is slidably connected in the bracket, one end of the card column passes through the first cross arm and is arranged in the connecting block, one end of the connecting block is provided with a plurality of card holes matching the card column, the other end of the card column is fixed with a pull plate, and a spring is fixed on the outside of the card column between the pull plate and the bracket.

[0008] Preferably, limiting plates are fixed at both ends of the outer wall of the pull plate, limiting columns are slidably connected to the two limiting plates, one end of the two limiting columns is fixed to the bracket, and the other end of the two limiting columns is fixed with a baffle, and a protective plate is fixed on the outer wall of the first cross arm on one side of the pull plate.

[0009] Preferably, a first support block is fixed to the end of the pull plate away from the clamping column, a second support block is fixed to the outer wall of the first cross arm, a latch is provided in the second support block, the output end of the latch is provided in the first support block, and two limiting holes matching the latch are provided at the end of the first support block facing the second support block.

[0010] Preferably, both ends of the outer wall of the connecting block are fixed with limiting blocks, and both ends of the inner wall of the first cross arm are provided with limiting grooves matching the limiting blocks.

[0011] Preferably, a mounting plate is fixed on the outer wall of the fixing block, four corners of the mounting plate are provided with mounting holes, and the second gear is rotatably connected to the fixing block.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are:

[0013] In the present invention, through the arrangement of the first support block, the second support block, the pin and the limiting hole, when one end of the clamping column enters the clamping hole opened on the outer wall of the connecting block, the position of the connecting block will be limited. At this time, the user can limit the position of the first support block by inserting the pin, thereby limiting the position of the pull plate and the clamping column, avoiding the displacement of the clamping column due to the shaking of the first cross arm and the second cross arm, and having greater stability. When the length needs to be adjusted, the pin can be inserted into another limiting hole opened at one end of the first support block to limit the position of the clamping column, without the user having to pull the pull plate all the time, which is convenient for adjusting the position of the connecting block and having greater practicality. In addition, the device drives the second gear to rotate through the operation of the motor, thereby driving the first gear to rotate, and driving the first cross arm connected to the connecting column to adjust the angle, which is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of the multi-circuit cross-arm device for a high-voltage transmission tower proposed in the utility model;

[0015] Figure 2 This is a cross-sectional view of a multi-circuit cross-arm device for a high-voltage transmission tower proposed in the utility model;

[0016] Figure 3 This is a schematic diagram of the buckle structure of the multi-circuit cross-arm device of the high-voltage transmission tower proposed in the utility model;

[0017] Figure 4 The utility model provides a schematic diagram of the internal structure of the fixed block of the multi-circuit cross-arm device of the high-voltage transmission tower.

[0018] Legend: 1. First cross arm; 2. Second cross arm; 3. Connecting block; 4. Limiting block; 5. Limiting slot; 6. Insulator; 7. Branch box; 8. Fixing block; 9. Connecting column; 10. First gear; 11. Second gear; 12. Motor; 13. Mounting plate; 14. Mounting hole; 15. Snap-fit structure; 1501. Bracket; 1502. Snap-fit column; 1503. Snap-fit hole; 1504. Spring; 1505. Pull plate; 16. Limiting plate; 17. Limiting column; 18. Baffle; 19. First support block; 20. Second support block; 21. Latch; 22. Limiting hole; 23. Protective plate. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1, as Figure 1-4 As shown, the utility model provides a multi-circuit crossarm device for a high-voltage transmission tower, comprising a first crossarm 1, one end of the first crossarm 1 being slidably connected to a connecting block 3, one end of the connecting block 3 passing through the first crossarm 1 and being fixed with a second crossarm 2, insulators 6 being provided on the outer walls of the first crossarm 1 and the second crossarm 2, a branch box 7 being provided on the end of the insulator 6 away from the first crossarm 1 or the second crossarm 2, the end of the first crossarm 1 away from the second crossarm 2 being rotatably connected to a fixed block 8, one end of the first crossarm 1 being fixed to a connecting column 9, a first gear 10 being rotatably connected to the inner wall of the fixed block 8, the first gear 10 being meshed with the second gear 11, an end of the connecting column 9 away from the first crossarm 1 passing through one side of the fixed block 8 and being fixed to the first gear 10, a motor 12 being installed on the inner wall of the fixed block 8, the output end of the motor 12 being fixed to the second gear 11, and a snap structure 15 for limiting the position of the connecting block 3 being provided on the outer wall of the first crossarm 1.

[0022] The effect achieved by the entire embodiment 1 is that, through the setting of the connecting block 3, the user can slide the first crossarm 1 to adjust the distance between the first crossarm 1 and the second crossarm 2, so as to achieve the effect of adjusting the overall length of the device, which is more practical. Through the operation of the motor 12, the second gear 11 is driven to rotate, thereby driving the first gear 10 to rotate, and driving the first crossarm 1 connected to the connecting column 9 to adjust the angle, which is more practical. Through the setting of the snap structure 15, the position of the connecting block 3 can be limited to avoid accidental movement, and the stability is stronger.

[0023] Example 2, as Figure 1-4As shown, the buckle structure 15 includes a bracket 1501 fixed on the outer wall of the first cross arm 1, and a clamping column 1502 is slidably connected in the bracket 1501. One end of the clamping column 1502 passes through the first cross arm 1 and is arranged in the connecting block 3. One end of the connecting block 3 is provided with a plurality of clamping holes 1503 matching the clamping column 1502. A pull plate 1505 is fixed to the other end of the clamping column 1502. A spring 1504 is fixed between the pull plate 1505 and the bracket 1501 on the outside of the clamping column 1502. Limiting plates 16 are fixed to both ends of the outer wall of the pull plate 1505. Limiting columns 17 are slidably connected in the two limiting plates 16. One end of the two limiting columns 17 is fixed to the bracket 1501, and the other end of the two limiting columns 17 is fixed with a baffle 18. A protective plate 23 is fixed on the outer wall of the cross arm 1 on one side of the pull plate 1505, and a first support block 19 is fixed on the end of the pull plate 1505 away from the column 1502. A second support block 20 is fixed on the outer wall of the first cross arm 1, and a latch 21 is provided in the second support block 20. The output end of the latch 21 is provided in the first support block 19, and two limiting holes 22 matching the latch 21 are provided at the end of the first support block 19 facing the second support block 20. Limiting blocks 4 are fixed at both ends of the outer wall of the connecting block 3, and limiting grooves 5 matching the limiting blocks 4 are provided at both ends of the inner wall of the first cross arm 1. A mounting plate 13 is fixed on the outer wall of the fixed block 8, and mounting holes 14 are provided at the four corners of the mounting plate 13. The second gear 11 is rotatably connected to the fixed block 8.

[0024] The effect achieved by the entire embodiment 2 is that, through the arrangement of the first support block 19, the second support block 20, the pin 21 and the limiting hole 22, when one end of the column 1502 enters the hole 1503 opened on the outer wall of the connecting block 3, the position of the connecting block 3 will be limited. At this time, the user can limit the position of the first support block 19 by inserting the pin 21, thereby limiting the position of the pull plate 1505 and the column 1502, avoiding the displacement of the column 1502 due to the shaking of the first cross arm 1 and the second cross arm 2, and having greater stability. When the length needs to be adjusted, the pin 21 can be inserted into another limiting hole 22 opened at one end of the first support block 19, which can limit the position of the column 1502. There is no need for the user to keep pulling the pull plate 1505, which facilitates the adjustment of the position of the connecting block 3 and is more practical.

[0025] Working principle: When the device is used, the device is installed on the high-voltage transmission tower through the setting of the mounting plate 13 and the mounting hole 14. Through the setting of the connecting block 3, the user can slide the first cross arm 1 to adjust the distance between the first cross arm 1 and the second cross arm 2, so as to adjust the overall length of the device. When adjusting, it is only necessary to pull the pull plate 1505 to drive the clamping column 1502 out of the current clamping hole 1503, and then the position of the second cross arm 2 can be adjusted. When locking, release the pull plate 1505, so that the clamping column 1502 enters the corresponding clamping hole 1503 under the reset thrust of the spring 1504. 3, the position of the connecting block 3 is limited. At this time, the user can limit the position of the first supporting block 19 by inserting the pin 21, thereby limiting the position of the pull plate 1505 and the clamping column 1502, avoiding the displacement of the clamping column 1502 due to the shaking of the first cross arm 1 and the second cross arm 2, and when the length needs to be adjusted, the pin 21 can be inserted into another limiting hole 22 opened at one end of the first supporting block 19, which can limit the position of the clamping column 1502, and the user does not need to pull the pull plate 1505 all the time, which facilitates the adjustment of the position of the connecting block 3.

[0026] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any other form. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes for application in other fields. However, any simple modification, equivalent change and modification of the above embodiment made according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A multi-circuit cross-arm device for a high-voltage transmission tower, comprising a first cross-arm (1), characterized in that: One end of the first cross arm (1) is slidably connected to a connecting block (3), one end of the connecting block (3) passes through the first cross arm (1) and is fixed to the second cross arm (2), an insulator (6) is provided on the outer wall of the first cross arm (1) and the second cross arm (2), an end of the insulator (6) away from the first cross arm (1) or the second cross arm (2) is provided with a branch box (7), the end of the first cross arm (1) away from the second cross arm (2) is rotatably connected to a fixing block (8), one end of the first cross arm (1) is fixed to a connecting column (9), and the A first gear (10) is rotatably connected to the inner wall of the fixed block (8), and the first gear (10) is meshedly connected to the second gear (11). The end of the connecting column (9) away from the first cross arm (1) passes through one side of the fixed block (8) and is fixed to the first gear (10). A motor (12) is installed on the inner wall of the fixed block (8), and the output end of the motor (12) is fixed to the second gear (11). A snap-fit structure (15) for limiting the position of the connecting block (3) is provided on the outer wall of the first cross arm (1).

2. The multi-circuit cross-arm device for a high-voltage transmission tower according to claim 1, characterized in that: The buckle structure (15) comprises a bracket (1501) fixed on the outer wall of the first cross arm (1), a clamping column (1502) is slidably connected in the bracket (1501), one end of the clamping column (1502) passes through the first cross arm (1) and is arranged in the connecting block (3), one end of the connecting block (3) is provided with a plurality of clamping holes (1503) matching the clamping column (1502), a pull plate (1505) is fixed to the other end of the clamping column (1502), and a spring (1504) is fixed between the pull plate (1505) and the bracket (1501) and located outside the clamping column (1502).

3. The multi-circuit cross-arm device for a high-voltage transmission tower according to claim 2, characterized in that: Limiting plates (16) are fixed at both ends of the outer wall of the pull plate (1505), and limiting columns (17) are slidably connected inside the two limiting plates (16). One end of the two limiting columns (17) is fixed to the bracket (1501), and the other end of the two limiting columns (17) is fixed with a baffle (18). A protective plate (23) is fixed on the outer wall of the first cross arm (1) on one side of the pull plate (1505).

4. The multi-circuit cross-arm device for a high-voltage transmission tower according to claim 2, characterized in that: A first support block (19) is fixed to one end of the pull plate (1505) away from the clamping column (1502), a second support block (20) is fixed to the outer wall of the first cross arm (1), a latch (21) is provided in the second support block (20), an output end of the latch (21) is provided in the first support block (19), and two limiting holes (22) matching the latch (21) are provided at one end of the first support block (19) facing the second support block (20).

5. The multi-circuit cross-arm device for a high-voltage transmission tower according to claim 1, characterized in that: Limiting blocks (4) are fixed at both ends of the outer wall of the connecting block (3), and limiting grooves (5) matching the limiting blocks (4) are provided at both ends of the inner wall of the first cross arm (1).

6. The multi-circuit cross-arm device for a high-voltage transmission tower according to claim 1, characterized in that: A mounting plate (13) is fixed on the outer wall of the fixing block (8), and mounting holes (14) are provided at four corners of the mounting plate (13). The second gear (11) is rotatably connected to the fixing block (8).

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