A short crossarm spacing adjustment and locking device

Abstract

This utility model relates to the field of power equipment technology, specifically to a short crossarm spacing adjustment and locking device, including a fixed frame, sliding cavities, an adjustment structure, and a locking structure. The fixed frame has two sliding cavities inside, and the adjustment structure is fixedly connected to the inner wall of each sliding cavity. The locking structure is slidably connected to the adjustment structure and is snap-fitted to the fixed frame. The adjustment structure includes a motor fixedly connected to the inner wall of the sliding cavity, and an A-screw is fixedly connected to the output end of the motor. A transmission belt is rotatably connected to the surface of the A-screw. This utility model, by setting up the adjustment structure and the locking structure, forms a mechanical lock. Through the composite design of "electric adjustment + spring-type mechanical locking," it achieves rapid and precise spacing adjustment, and the spring force combined with the slot provides a reliable anti-loosening effect, effectively preventing displacement of the short crossarm due to external vibration or changes in line tension.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, and in particular to a short crossarm spacing adjustment and locking device. Background Technology

[0002] In power systems, short crossarms are crucial components used to support and secure power lines. In practical applications, due to varying power engineering requirements and site conditions, it is often necessary to adjust the spacing between short crossarms. Currently, existing methods for adjusting short crossarm spacing have several problems.

[0003] There is an existing short crossarm spacing adjustment and locking device, which mostly uses manual wrench adjustment and bolt fixing. The adjustment efficiency is low and the accuracy is insufficient. It relies on a single bolt for locking, and it is easy to loosen under external force vibration. This causes the spacing to change, affecting the safety of the line. It cannot meet the needs of rapid adjustment under different working conditions. Utility Model Content

[0004] The purpose of this invention is to solve the problems of low adjustment efficiency and poor locking reliability of existing devices, and to propose a short crossarm spacing adjustment and locking device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a short crossarm spacing adjustment and locking device, comprising a fixed frame, a sliding cavity, an adjustment structure, and a locking structure. The fixed frame has two sliding cavities inside. The adjustment structure is fixedly connected to the inner wall of each sliding cavity. The locking structure is slidably connected to the adjustment structure and is snap-fitted to the fixed frame. The adjustment structure includes a motor fixedly connected to the inner wall of the sliding cavity. An A screw is fixedly connected to the output end of the motor. A transmission belt is rotatably connected to the surface of the A screw. A B screw is rotatably connected to the other end of the inner wall of the transmission belt. A short crossarm is threaded onto the surfaces of both the A and B screws. The locking structure includes sliding grooves on both sides of the short crossarm. Three return springs are fixedly connected to the inner walls of the two sliding grooves. A slide frame is fixedly connected to one end of each return spring. A locking block is fixedly connected to the inner wall of the slide frame. Locking grooves are formed on the left and right sides of the front of the fixed frame. The surface of the locking block is snap-fitted to the inner wall of the locking groove.

[0006] Furthermore, a limiting groove is formed at the middle end of the inner wall of the sliding cavity, and a ring is fixedly connected to the middle end of the surfaces of the A screw and the B screw.

[0007] Furthermore, the surface of the ring is rotatably connected to the inner wall of the limiting groove, and toothed blocks are fixedly connected to the surfaces of the A screw and the B screw.

[0008] Furthermore, the inner wall of the transmission belt is provided with toothed grooves, and the surface of the toothed block is meshed with the inner wall of the toothed groove.

[0009] Furthermore, sliders are fixedly connected to both sides of the short crossarm, and threaded holes are formed on the surface of the two sliders.

[0010] Furthermore, the inner walls of the two threaded holes are threadedly connected to the surfaces of screw A and screw B, and slide rails are provided on the left and right sides of the front of the fixing frame.

[0011] Furthermore, the inner wall of the slide rail is slidably connected to the surface of the carriage, and a handle is fixedly connected to the surface of the carriage.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] In this invention, by setting up an adjustment structure and a locking structure, after the motor starts as the power source, it drives the A screw to rotate. The toothed blocks on its surface precisely mesh with the toothed grooves on the inner wall of the transmission belt, driving the B screw to rotate synchronously. The A screw and the B screw are connected to the threaded holes of the sliders on both sides of the short crossarm through threads, converting the rotational motion of the screws into the linear movement of the short crossarm along the inner wall of the slide cavity, realizing rapid adjustment of the spacing. The rotational connection between the ring and the limiting groove restricts the axial displacement of the screw, ensuring a stable and non-offset adjustment process. The transmission design of the toothed blocks and toothed grooves avoids the slippage problem that may occur in traditional chain drives. When the short crossarm is adjusted to the target position, pulling the handle on the surface of the slide overcomes the elasticity of the return spring, causing the slide to slide along the slide rail, driving the locking block to move outward. After releasing the handle, the return spring pushes the slide back to its original position, so that the locking block is precisely locked into the locking groove on the front of the fixed frame, forming a mechanical lock. This is achieved through "electric adjustment + spring-type mechanical locking". The composite design enables rapid and precise adjustment of the spacing, and the combination of spring force and slot provides a reliable anti-loosening effect, effectively preventing displacement of the short crossarm due to external vibration and changes in line tension, improving the stability and safety of power line installation, while simplifying the operation process and reducing manual adjustment errors and maintenance costs. Attached Figure Description

[0014] Figure 1 A three-dimensional front view of a short crossbeam spacing adjustment and locking device is provided for this utility model;

[0015] Figure 2 This utility model provides a schematic diagram of the bottom structure of a short crossbeam spacing adjustment and locking device;

[0016] Figure 3 This utility model provides an exploded structural diagram of a short crossbeam spacing adjustment and locking device;

[0017] Figure 4 This utility model provides a schematic diagram of the adjustment structure in a short crossbeam spacing adjustment and locking device;

[0018] Figure 5 This utility model provides a schematic diagram of the locking structure in a short crossbeam spacing adjustment and locking device.

[0019] Legend:

[0020] 1. Fixed frame; 2. Slide cavity; 3. Adjustment structure; 31. Motor; 32. A screw; 33. Transmission belt; 34. B screw; 35. Short crossbeam; 4. Locking structure; 41. Slide groove; 42. Return spring; 43. Slide carriage; 44. Locking block; 45. Locking groove; 5. Limiting groove; 6. Ring; 7. Tooth block; 8. Tooth groove; 9. Slider; 10. Threaded hole; 11. Slide rail; 12. Handle. Detailed Implementation

[0021] Please see Figure 1-5 This utility model provides a technical solution: a short crossarm spacing adjustment and locking device, including a fixed frame 1, a sliding cavity 2, an adjustment structure 3 and a locking structure 4. The fixed frame 1 has two sliding cavities 2 inside. The inner wall of the sliding cavity 2 is fixedly connected to the adjustment structure 3. The locking structure 4 is slidably connected to the adjustment structure 3 and is snapped into the fixed frame 1.

[0022] The specific settings and functions of its adjustment structure 3 and locking structure 4 will be explained below.

[0023] In this embodiment: the adjusting structure 3 includes a motor 31 fixedly connected to the inner wall of the slide cavity 2. The output end of the motor 31 is fixedly connected to an A screw 32. A transmission belt 33 is rotatably connected to the surface of the A screw 32. The other end of the inner wall of the transmission belt 33 is rotatably connected to a B screw 34. The surfaces of the A screw 32 and the B screw 34 are each threadedly connected to a short crossbeam 35. The locking structure 4 includes a slide groove 41 opened on both sides of the short crossbeam 35. Three return springs 42 are fixedly connected to the inner walls of the two slide grooves 41. One end of the return spring 42 is fixedly connected to a slide frame 43. A locking block 44 is fixedly connected to the inner wall of the slide frame 43. Locking grooves 45 are formed on the left and right sides of the front of the fixed frame 1. The surface of the locking block 44 is engaged with the inner wall of the locking groove 45.

[0024] The effect achieved by the above components is as follows: by setting the motor 31 as the power source, after starting, it drives the A screw 32 to rotate. The tooth block 7 on the surface of the A screw 32 meshes with the tooth groove 8 on the inner wall of the transmission belt 33, driving the B screw 34 to rotate synchronously. The A screw 32 and the B screw 34 are connected to the threaded holes 10 of the sliders 9 on both sides of the short crossarm 35 through the threads, so that the short crossarm 35 can move along the inner wall of the slide cavity 2 to complete the spacing adjustment. In the locking structure 4, the return spring 42 pushes the slide 43, so that the locking block 44 is embedded in the locking groove 45 of the fixed frame 1, and the short crossarm 35 is fixed in the adjusted position.

[0025] Please see Figure 3Specifically, a limiting groove 5 is provided at the middle of the inner wall of the sliding cavity 2, and a ring 6 is fixedly connected to the middle of the surfaces of screw A 32 and screw B 34.

[0026] The effect achieved by the above components is as follows: by setting the limiting groove 5 to cooperate with the ring 6, the axial movement of screw A 32 and screw B 34 is restricted, ensuring that the screws can only rotate within the limiting groove 5, preventing the screws from deviating during the adjustment process, and ensuring transmission stability.

[0027] Please see Figure 4 Specifically, the surface of the ring 6 is rotatably connected to the inner wall of the limiting groove 5, and toothed blocks 7 are fixedly connected to the surfaces of screw A 32 and screw B 34.

[0028] The effect achieved by the above components is as follows: by setting the toothed block 7 to provide a meshing interface between the A screw 32 and the B screw 34 and the transmission belt 33, and by the rotational cooperation between the ring 6 and the limiting groove 5, the screws maintain coaxial rotation when transmitting power, thus avoiding slippage or misalignment.

[0029] Please see Figure 4 Specifically, the inner wall of the transmission belt 33 is provided with a toothed groove 8, and the surface of the toothed block 7 is meshed with the inner wall of the toothed groove 8.

[0030] The effect achieved by the above components is as follows: by setting the meshing structure of the tooth block 7 and the tooth groove 8, the synchronous transmission of the A screw 32 and the B screw 34 is realized, ensuring that the two short crossarms 35 move in a consistent manner during the adjustment process and avoiding adjustment errors.

[0031] Please see Figure 5 Specifically, the two sides of the short crossarm 35 are fixedly connected with sliders 9, and the surfaces of the two sliders 9 are provided with threaded holes 10.

[0032] The effect achieved by the above components is as follows: by setting the slider 9 to cooperate with the inner wall of the slide cavity 2, the short crossarm 35 is guided; the threaded hole 10 is threadedly connected to the screw, which converts the rotational motion of the screw into the linear movement of the short crossarm 35, thereby achieving precise adjustment of the spacing.

[0033] Please see Figure 2-5 Specifically, the inner walls of the two threaded holes 10 are threadedly connected to the surfaces of screw A 32 and screw B 34, and slide rails 11 are provided on the left and right sides of the front of the fixing bracket 1.

[0034] The effect achieved by the above components is as follows: the short crossbeam 35 can be moved and adjusted by setting the threaded connection, the slide rail 11 provides a sliding track for the slide 43, and ensures that the locking block 44 maintains linear movement when it is engaged or disengaged from the locking groove 45, thus preventing deviation.

[0035] Please see Figure 2Specifically, the inner wall of the slide rail 11 is slidably connected to the surface of the carriage 43, and a handle 12 is fixedly connected to the surface of the carriage 43.

[0036] The effect achieved by the above components is as follows: by setting the handle 12, it is convenient for the operator to apply force to pull the slide 43 to slide in the slide rail 11, overcome the elastic force of the return spring 42 to make the locking block 44 disengage from the locking groove 45, and realize the unlocking of the short crossbeam 35, which is convenient and efficient.

[0037] Working principle: By setting the adjustment structure 3 and locking structure 4, after the motor 31 is started as the power source, it drives the A screw 32 to rotate. The toothed blocks 7 on its surface precisely mesh with the toothed grooves 8 on the inner wall of the transmission belt 33, driving the B screw 34 to rotate synchronously. The A screw 32 and the B screw 34 are connected to the threaded holes 10 of the sliders 9 on both sides of the short crossarm 35 through threads, which converts the rotational motion of the screws into the linear movement of the short crossarm 35 along the inner wall of the sliding cavity 2, realizing the rapid adjustment of the spacing. The ring 6 is rotated and connected to the limiting groove 5 to limit the axial position of the screw. The transmission design of the toothed block 7 and toothed groove 8 avoids the slippage problem that may occur in traditional chain drives. After the short crossarm 35 is adjusted to the target position, the pull handle 12 on the surface of the slide 43 is pulled to overcome the elasticity of the return spring 42 and make the slide 43 slide along the slide rail 11, which drives the locking block 44 to move outward. After releasing the pull handle 12, the return spring 42 pushes the slide 43 to return to its original position, so that the locking block 44 is precisely locked into the locking groove 45 on the front of the fixed frame 1, forming a mechanical lock. Through the composite design of "electric adjustment + spring mechanical locking", the spacing can be quickly and accurately adjusted, and the spring elasticity and the groove can be used to provide a reliable anti-loosening effect. This effectively avoids the displacement of the short crossarm caused by external vibration and changes in line tension, improves the stability and safety of power line installation, simplifies the operation process, and reduces manual adjustment errors and maintenance costs.

[0038] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A short crossbeam spacing adjustment and locking device, comprising a fixed frame (1), a sliding cavity (2), an adjustment structure (3), and a locking structure (4), characterized in that: The fixed frame (1) has two sliding cavities (2) inside. The inner wall of the sliding cavity (2) is fixedly connected to an adjustment structure (3). The locking structure (4) is slidably connected to the adjustment structure (3), and the locking structure (4) is snap-fit ​​connected to the fixed frame (1). The adjustment structure (3) includes a motor (31) fixedly connected to the inner wall of the slide cavity (2). The output end of the motor (31) is fixedly connected to an A screw (32). A transmission belt (33) is rotatably connected to the surface of the A screw (32). A B screw (34) is rotatably connected to the other end of the inner wall of the transmission belt (33). A short crossarm (35) is threadedly connected to the surfaces of the A screw (32) and the B screw (34). The locking structure (4) includes a slide groove (41) opened on both sides of the short crossarm (35). Three return springs (42) are fixedly connected to the inner walls of the two slide grooves (41). A slide frame (43) is fixedly connected to one end of the return spring (42). A locking block (44) is fixedly connected to the inner wall of the slide frame (43). Locking grooves (45) are formed on the left and right sides of the front of the fixed frame (1). The surface of the locking block (44) is locked to the inner wall of the locking groove (45).

2. The short crossarm spacing adjustment and locking device according to claim 1, characterized in that: A limiting groove (5) is provided at the middle end of the inner wall of the sliding cavity (2), and a ring (6) is fixedly connected to the middle end of the surfaces of the A screw (32) and the B screw (34).

3. The short crossbeam spacing adjustment and locking device according to claim 2, characterized in that: The surface of the ring (6) is rotatably connected to the inner wall of the limiting groove (5), and toothed blocks (7) are fixedly connected to the surfaces of the A screw (32) and the B screw (34).

4. The short crossarm spacing adjustment and locking device according to claim 3, characterized in that: The inner wall of the transmission belt (33) is provided with a toothed groove (8), and the surface of the toothed block (7) is meshed with the inner wall of the toothed groove (8).

5. The short crossarm spacing adjustment and locking device according to claim 1, characterized in that: The short crossarm (35) is fixedly connected to two sliders (9), and the surfaces of the two sliders (9) are provided with threaded holes (10).

6. The short crossarm spacing adjustment and locking device according to claim 5, characterized in that: The inner walls of the two threaded holes (10) are threaded to the surfaces of screw A (32) and screw B (34), and slide rails (11) are provided on the left and right sides of the front of the fixing frame (1).

7. The short crossarm spacing adjustment and locking device according to claim 6, characterized in that: The inner wall of the slide rail (11) is slidably connected to the surface of the slide frame (43), and a handle (12) is fixedly connected to the surface of the slide frame (43).

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