Self-locking spacer

Abstract

The utility model provides a self-locking spacer, and relates to the spacer field, the self-locking spacer comprises a middle box and a wire clamp assembly, the inner part of the middle box is provided with an inner cavity, the inner cavity is internally provided with a motor, the output shaft end of the motor is connected with a driving shaft, the outer side of the driving shaft is fixedly provided with a petal wheel and an electromagnetic brake, the outer side of the petal wheel is provided with a push rod, and the push rod is connected with the wire clamp assembly. The ejector rod is in contact with the outer edge of the petal wheel through a rolling wheel, the ejector rod slidably penetrates through the box wall of the middle box, the wire clamp assembly is fixed to the outer side of the middle box through a guide cylinder, the wire clamp assembly comprises a movable part and a fixed part, the movable part is hinged to the fixed part, and a fixed clamping block is fixed to the inner wall of the movable part. Meanwhile, a movable clamping block is arranged on the inner side of the fixing part and connected with the outer end of the ejector rod. According to the utility model, the clamping space of the overhead cable can be adjusted, and the automatic clamping and fixing effects can be realized at the same time.

Description

Technical Field

[0001] This utility model relates to the field of spacer technology, specifically to a self-locking spacer. Background Technology

[0002] High-voltage overhead lines often use split conductors, and the spacer bar for the sub-conductors is one of the important protective hardware. It can maintain the distance between the sub-conductors and prevent them from getting tangled. In addition, the spacer bar can suppress the sub-conductors' vibration in the wind and vibration of the span.

[0003] A search revealed existing technology (publication number: CN221862404U), which describes "an electric self-locking spacer, comprising a spacer body and a ground control terminal. The spacer body has symmetrically arranged upper locking clamps on both sides of its top, with a drive clamp on the first locking clamp. The spacer body also has symmetrically arranged middle locking clamps on both sides of its middle section, with a sliding clamp on the middle clamp. The spacer body also has symmetrically arranged lower locking clamps on both sides of its bottom, with a positioning clamp on the lower clamp. An energy structure is also provided on the spacer body. This structure can stably lock multiple sets of sub-conductors and allows free movement on the sub-conductors, reducing safety hazards for construction workers working at heights. Installation is quick and convenient, with ground operation and free control, greatly improving work efficiency. The device has a simple overall structure, is energy-saving and environmentally friendly, easy to use, and highly practical."

[0004] Although the intermediate rod mentioned in the above-mentioned technical patent documents achieves the effects of quick installation and reduced safety hazards, it still has some shortcomings: the locking clamp involved still requires manual fixing of each cable when fixing overhead cables, which results in the defects of cumbersome operation and low efficiency. Secondly, the locking space adjustment range inside the locking clamp is too small and cannot be applied to overhead cables of various specifications. Utility Model Content

[0005] To overcome the shortcomings of the existing technology, a self-locking spacer is provided to solve the problems mentioned in the background.

[0006] To achieve the above objectives, a self-locking spacer is provided, comprising: an intermediate box and a wire clamp assembly. The intermediate box has an inner cavity containing a motor, the output shaft of which is connected to a drive shaft. A petal wheel and an electromagnetic brake are fixed to the outside of the drive shaft. A push rod is provided on the outside of the petal wheel, and the push rod contacts the outer edge of the petal wheel through a roller. The push rod slides through the box wall of the intermediate box. The wire clamp assembly is fixed to the outside of the intermediate box by a guide cylinder. The wire clamp assembly includes a movable part and a fixed part, which are hinged together. A fixed clamping block is fixed to the inner wall of the movable part, and a movable clamping block is provided on the inner side of the fixed part. The movable clamping block is connected to the outer end of the push rod.

[0007] Furthermore, a photovoltaic panel is embedded on the outer surface of the intermediate box, and the photovoltaic panel is electrically connected to a controller installed on the inner wall of the intermediate box.

[0008] Furthermore, the motor is electrically connected to the electromagnetic brake via a controller, and a button box is provided on the outside of the intermediate box.

[0009] Furthermore, the guide cylinder is vertically fixed to the outer wall of the intermediate box, and the extension line of the guide cylinder intersects the center of the intermediate box, and ball bearings are provided on the inner wall of the guide cylinder.

[0010] Furthermore, both the movable part and the fixed part are designed as arc-shaped plate structures, and the end of the movable part away from the hinged part is movably connected to a retaining plate, and a positioning bolt is screwed to the outer end of the retaining plate.

[0011] Furthermore, the fixed clamping block has a guide hole inside, and the outer end of the movable clamping block is connected to a guide rod, and the guide rod corresponds to the position of the guide hole.

[0012] Furthermore, the fixing part has a through hole inside, and the top rod slides through the through hole to connect with the movable clamping block.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. By utilizing the movable and fixed parts included in the cable clamp assembly, when fixing overhead cables, first rotate the movable part to open it, then place the cable between the fixed and movable clamps between the movable and fixed parts, and then rotate the clamping plate towards the fixed part so that its outer end is clamped against the outer wall of the fixed part. By moving the movable clamp, the distance between it and the fixed clamp can be adjusted, thus facilitating a wide range of adjustment of the clamping space. It is suitable for overhead cables of different specifications.

[0015] 2. After placing the cable inside the movable and fixed clamping blocks, start the motor by pressing the button. The motor drives the petal wheel to rotate via the drive shaft. The petal wheel then presses the push rod outward through contact with the roller. This push rod then moves the movable clamping block towards the fixed clamping block, clamping the overhead cable. After the cable is stably clamped, the drive shaft is braked by energizing the electromagnetic brake, ensuring that the movable clamping block maintains a stable and continuous clamping effect. This achieves automatic clamping and fixing of multiple overhead cables, improving installation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the front section structure of an embodiment of the present utility model.

[0017] Figure 2 This is a schematic diagram of the internal structure of the central box in an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the wire clamp assembly structure according to an embodiment of the present utility model.

[0019] Figure 4 This is a schematic diagram of the card plate structure according to an embodiment of the present utility model.

[0020] In the diagram: 1. Intermediate box; 11. Inner cavity; 12. Drive shaft; 13. Petal wheel; 14. Roller; 15. Top rod; 16. Guide cylinder; 17. Photovoltaic panel; 18. Motor; 19. Electromagnetic brake; 110. Controller; 2. Wire clamp assembly; 21. Moving part; 22. Fixed part; 23. Fixed clamping block; 231. Guide hole; 24. Moving clamping block; 241. Guide rod; 25. Clamping plate; 26. Positioning bolt. Detailed Implementation

[0021] Reference Figures 1 to 4 As shown, this utility model provides a self-locking spacer bar, including: an intermediate box 1 and a wire clamp assembly 2. The intermediate box 1 has an inner cavity 11, in which a motor 18 is provided. The output shaft of the motor 18 is connected to a drive shaft 12. A petal wheel 13 and an electromagnetic brake 19 are fixed on the outside of the drive shaft 12. A push rod 15 is provided on the outside of the petal wheel 13. The push rod 15 contacts the outer edge of the petal wheel 13 through a roller 14. The push rod 15 slides through the box wall of the intermediate box 1. The wire clamp assembly 2 is fixed on the outside of the intermediate box 1 through a guide cylinder 16. The wire clamp assembly 2 includes a movable part 21 and a fixed part 22. The movable part 21 and the fixed part 22 are hinged. A fixed clamping block 23 is fixed on the inner wall of the movable part 21. At the same time, a movable clamping block 24 is provided on the inner side of the fixed part 22. The movable clamping block 24 is connected to the outer end of the push rod 15.

[0022] In this embodiment, the intermediate box 1 and the wire clamp assembly 2 constitute the main structure of the self-locking spacer bar involved in this application, which is used for fixed-distance fixation between multiple overhead cables.

[0023] The middle box 1 is designed as a rectangular box with multiple perforations in its walls to reduce wind resistance during use.

[0024] Specifically, in the absence of electromagnetic brake 19, motor 18 can be configured as a stepper motor, so that the stability of drive shaft 12 can still be maintained after power failure.

[0025] Specifically, the outer edge of the petal wheel 13 has four raised arc-shaped edges and a groove, so that the roller 14 rolls and engages in the groove, achieving stable guiding thrust.

[0026] like Figures 1 to 4In the middle box 1, a photovoltaic panel 17 is embedded on the outer surface, and the photovoltaic panel 17 is electrically connected to the controller 110 installed on the inner wall of the middle box 1. The motor 18 is electrically connected to the electromagnetic brake 19 through the controller 110. A button box is provided on the outer side of the middle box 1. The guide cylinder 16 is vertically fixed on the outer wall of the middle box 1, and the extension line of the guide cylinder 16 intersects the center of the middle box 1. A ball bearing is provided on the inner wall of the guide cylinder 16. The movable part 21 and the fixed part 22 are both designed as arc-shaped plate structures. The end of the movable part 21 away from the hinged part 22 is movably connected to a clamping plate 25, and the outer end of the clamping plate 25 is screwed with a positioning bolt 26. The fixed clamping block 23 has a guide hole 231 inside, and the outer end of the movable clamping block 24 is connected to a guide rod 241, and the guide rod 241 corresponds to the guide hole 231. The fixed part 22 has a through hole inside, and the top rod 15 slides through the through hole and connects to the movable clamping block 24.

[0027] Specifically, the controller 110 includes a start-stop control circuit for the motor 18 and the electromagnetic brake 19, as well as an energy storage battery and a matching power conversion device electrically connected to the photovoltaic panel 17.

[0028] Specifically, the button box is equipped with control buttons to facilitate the start and stop of the motor 18. In practical applications, the degree to which the overhead cable is clamped can be observed, and the motor 18 can be stopped by controlling the button. Therefore, the speed of the motor 18 can be set to be relatively slow.

[0029] Specifically, the card plate 25 is designed as an L-shaped plate structure, and the positioning bolt 26 is screwed into the bent section at its end. The bent section is placed on the outer wall of the fixed part 22. At this time, the positioning bolt 26 is fixed in the positioning hole opened on the outer wall of the fixed part 22, thereby realizing the fixed connection between the movable part 21 and the fixed part 22.

[0030] As a preferred implementation, by setting the guide rod 241 and the guide hole 231, after the overhead cable is clamped, the guide rod 241 and the clamping block can form an encircling effect on the cable, thereby enhancing the stable clamping effect.

[0031] In use, the cable clamp assembly includes a movable part and a fixed part. To secure overhead cables, first rotate the movable part to open it. Then, place the cable between the fixed and movable clamping blocks. Next, rotate the clamping plate towards the fixed part, locking its outer end against the outer wall of the fixed part. The movement of the movable clamping block adjusts the distance between it and the fixed clamping block, allowing for a wide range of clamping space adjustments suitable for overhead cables of different specifications. After placing the cable inside the movable and fixed clamping blocks, start the motor via a button. The motor drives the petal wheel via a drive shaft, causing the petal wheel to press against the roller, pushing the movable clamping block towards the fixed clamping block to clamp the overhead cable. Once the cable is securely clamped, energize the electromagnetic brake to brake the drive shaft, maintaining a stable and continuous clamping effect. This achieves automatic clamping and securing of multiple overhead cables, improving installation efficiency.

[0032] The self-locking spacer of this invention can effectively solve the problems mentioned in the background technology, and achieves the effect of adjusting the clamping space of overhead cables on the basis of existing self-locking spacer technology, while also having the effect of automatic clamping and fixing.

Claims

1. A self-locking spacer, comprising: The intermediate box (1) and the wire clamp assembly (2) are characterized in that: the intermediate box (1) has an inner cavity (11) inside, a motor (18) is provided in the inner cavity (11), and the output shaft end of the motor (18) is connected to a drive shaft (12), and a petal wheel (13) and an electromagnetic brake (19) are fixed on the outside of the drive shaft (12), and a push rod (15) is provided on the outside of the petal wheel (13), and the push rod (15) contacts the outer edge of the petal wheel (13) through a roller (14), and the push rod (15) is in contact with the outer edge of the petal wheel (13). The rod (15) slides through the wall of the intermediate box (1). The wire clamp assembly (2) is fixed to the outside of the intermediate box (1) by the guide tube (16). The wire clamp assembly (2) includes a movable part (21) and a fixed part (22). The movable part (21) and the fixed part (22) are hinged. A fixed clamping block (23) is fixed on the inner wall of the movable part (21). At the same time, a movable clamping block (24) is provided on the inner side of the fixed part (22). The movable clamping block (24) is connected to the outer end of the top rod (15).

2. The self-locking spacer according to claim 1, characterized in that, The outer surface of the intermediate box (1) is fitted with a photovoltaic panel (17), and the photovoltaic panel (17) is electrically connected to the controller (110) installed on the inner wall of the intermediate box (1).

3. A self-locking spacer according to claim 1, characterized in that, The motor (18) is electrically connected to the electromagnetic brake (19) via the controller (110), and a button box is provided on the outside of the intermediate box (1).

4. A self-locking spacer according to claim 1, characterized in that, The guide cylinder (16) is vertically fixed to the outer wall of the intermediate box (1), and the extension line of the guide cylinder (16) intersects the center of the intermediate box (1), and ball bearings are provided on the inner wall of the guide cylinder (16).

5. A self-locking spacer according to claim 1, characterized in that, Both the movable part (21) and the fixed part (22) are designed as arc-shaped plate structures. The movable part (21) is connected to a card plate (25) at the end away from the fixed part (22), and a positioning bolt (26) is screwed to the outer end of the card plate (25).

6. A self-locking spacer according to claim 1, characterized in that, The fixed clamping block (23) has a guide hole (231) inside, and the outer end of the movable clamping block (24) is connected to a guide rod (241), and the guide rod (241) corresponds to the guide hole (231).

7. A self-locking spacer according to claim 1, characterized in that, The fixing part (22) has a through hole inside, and the top rod (15) slides through the through hole and connects with the movable clamp (24).

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