A constant tension electric cable tensioner

Abstract

This utility model discloses a constant tension electric cable tensioner, relating to the field of cable technology. It includes a base, a placement plate on the base, and an internal conveying assembly. A transmission assembly is fixedly installed on the base, driving a clamping assembly. An adjusting assembly for regulating cable tension is also fixedly installed on the side of the base. The transmission assembly includes a first motor, a drive rod fixedly installed at the output end of the first motor, a limiting seat for limiting the drive rod, and a fixed block fixedly installed on the top of the base. A threaded rod and a limiting rod are rotatably connected to the side of the fixed block, and the threaded rod is threadedly connected to a moving block. This utility model, by setting up a transmission assembly, converts the linear thrust of the moving block into the rotational clamping force of the clamp, preventing gear disengagement when the motor is overloaded. The opening and closing degree of the clamping assembly directly controls the cable gripping force, forming a closed-loop adjustment with the linear speed of the conveying assembly and the pulley position of the adjusting assembly.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically a constant tension electric cable tensioner. Background Technology

[0002] Constant tension electric cable tensioners are key equipment in fields such as power construction and cable laying. Early versions relied on mechanical structures such as weights and friction brakes, resulting in crude tension adjustment and an inability to respond to external changes in real time.

[0003] The existing patent (authorization announcement number: CN220766143U) discloses an adjustable tension wire feeding device. The key technical points of the solution are: during use, the motor speed of the device and the motor speed of the take-up mechanism are always kept consistent through the control unit to ensure constant unwinding tension. The tension arm further ensures the stability of the wire feeding tension, improves product quality, and increases the product yield. This utility model has a simple structure, is easy to operate, and has good performance, making it suitable for widespread application.

[0004] However, the above technical solutions still have certain defects. When transporting cables, the tension of the cables cannot be adjusted, and the wear on the surface of the cables cannot be guaranteed to meet the requirements for cable transport. Therefore, a constant tension electric cable tensioner is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a constant tension electric cable tensioner to solve the problems in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A constant tension electric cable tensioner includes a base, a placement plate on the base and an internal conveying assembly, a transmission assembly fixedly installed on the base, a clamping assembly driven by the transmission assembly, and an adjustment assembly for adjusting cable tension fixedly installed on the side of the base.

[0008] The transmission assembly includes a first motor, a drive rod fixedly installed at the output end of the first motor, a limiting seat for limiting the drive rod, a fixing block fixedly installed at the top of the base, a threaded rod and a limiting rod rotatably connected to the side of the fixing block, the threaded rod being threadedly connected to a moving block, the moving block being slidably connected to the limiting rod, and a pushing block being fixedly connected to the moving block.

[0009] The first motor is a bidirectional motor. Each end of the first motor is connected to a drive rod. The end of the two drive rods away from the first motor is fixedly connected to a set of bevel gears. The end of the threaded rod near the drive rod is also fixedly connected to a bevel gear, and the drive rod and the threaded rod mesh with each other.

[0010] The clamping assembly includes a first clamp and a second clamp that open and close synchronously through half-gear meshing. The first clamp has an L-shaped extension that contacts the plane of the push block.

[0011] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0012] As a further embodiment of this utility model: the conveying assembly includes a second motor and a transmission rod. The output end of the second motor and one end of the transmission rod are both provided with a rotating wheel. The rotating wheel is a gear, and the second motor and the rotating wheel are connected to each other through a transmission belt. The end of the transmission rod of the conveying assembly is provided with an output wheel for winding cables.

[0013] As a further improvement of this utility model, the extension is a straight arm structure.

[0014] As a further embodiment of this utility model: the adjustment assembly consists of a base, a rotating handle, a second screw, a drive block, and a V-groove pulley; the inner wall of the base is rotatably connected to the outer wall of the rotating handle, the second screw is rotatably connected to the base, the second screw is threadedly connected to the drive block, and the drive block slides within the base; the top of the drive block is fixedly connected to the V-groove pulley.

[0015] As a further improvement of this utility model, the first clamp and the second clamp are provided in two sets mirror images along the center line of the short side of the placement plate.

[0016] As a further improvement of this utility model: the clamping component clamps the cable passing through the output wheel.

[0017] As a further improvement of this utility model, the threaded rod, limiting rod, moving block, pushing block, and fixing block are all provided in two sets mirror images along the center line of the short side of the placement plate.

[0018] As a further improvement of this utility model, the surface of the V-groove pulley is provided with a polyurethane wear-resistant layer.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. This utility model converts the linear thrust of the moving block into the rotational clamping force of the chuck by setting a transmission component, preventing gear disengagement when the motor is overloaded. The opening and closing degree of the clamping component directly controls the gripping force of the cable, forming a closed-loop adjustment with the linear speed of the conveying component and the position of the pulley of the adjusting component.

[0021] 2. This utility model uses an adjustment component to adjust the position of the V-groove pulley on the base platform, so as to adjust the tension of the cable when the cable is wound around the V-groove pulley. At the same time, the adjustment component adjusts the cable wrap angle by changing the position of the V-groove pulley, thereby maintaining constant tension. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the transmission component of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the conveying component of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the adjustment component of this utility model.

[0027] Attached image annotations: 1. Base; 2. Transmission assembly; 3. Placement plate; 4. Clamping assembly; 5. Conveying assembly; 6. Adjustment assembly;

[0028] 21. First motor; 22. Limiting seat; 23. Drive rod; 24. Fixing block; 25. Threaded rod; 26. Limiting rod; 27. Moving block; 28. Pushing block;

[0029] 41. First chuck; 42. Second chuck;

[0030] 51. Second motor; 52. Drive belt; 53. Rotating pulley; 54. Drive rod; 55. Output pulley;

[0031] 61. Base platform; 62. Rotating handle; 63. Second screw; 64. Drive block; 65. V-groove pulley. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] In one embodiment, such as Figures 1-5 As shown, a constant tension electric cable tensioner includes a base 1, a placement plate 3 on the base 1, and an internal conveying assembly 5. The conveying assembly 5 includes a second motor 51 and a transmission rod 54. The output end of the second motor 51 and one end of the transmission rod 54 are both provided with a rotating wheel 53. The rotating wheel 53 is a gear, and the second motor 51 and the rotating wheel 53 are connected to each other through a transmission belt 52. The end of the transmission rod 54 of the conveying assembly 5 is provided with an output wheel 55 for winding the cable.

[0034] In this embodiment, the second motor 51, transmission rod 54, rotating wheel 53, and output wheel 55 are integrated inside the base 1, reducing external protruding parts and making the overall structure of the equipment compact, facilitating transportation and installation. The rotating wheel 53 adopts a gear design to ensure tight meshing with the transmission belt 52, reducing the risk of slippage and improving transmission efficiency. The second motor 51 transmits power to the output wheel 55 through the transmission rod 54, realizing stable winding of the cable, suitable for tension control requirements of different wire diameters. The stable operation of the conveying component 5 is a prerequisite for the adjustment component 6 to achieve constant tension. By controlling the linear speed of the output wheel 55, a closed-loop adjustment system is formed with the clamping force of the clamping component 4 and the pulley position of the adjustment component 6.

[0035] In one embodiment, such as Figure 3 As shown, the transmission assembly 2 includes a first motor 21, a drive rod 23 fixedly installed at the output end of the first motor 21, a limiting seat 22 for limiting the drive rod 23, and a fixing block 24 fixedly installed on the top of the base 1. A threaded rod 25 and a limiting rod 26 are rotatably connected to the side of the fixing block 24. The threaded rod 25 is threadedly connected to a moving block 27, and the moving block 27 is slidably connected to the limiting rod 26. A pushing block 28 is fixedly connected to the moving block 27. The clamping assembly 4 includes components that achieve synchronous opening and closing through half-gear meshing. The device comprises a first chuck 41 and a second chuck 42. The first chuck 41 has an L-shaped extension that contacts the plane of the push block 28. The first motor 21 is a bidirectional motor, and each end of the first motor 21 is connected to a drive rod 23. A set of bevel gears is fixedly connected to the ends of the two drive rods 23 away from the first motor 21. A bevel gear is also fixedly connected to the end of the threaded rod 25 near the drive rods 23, and the drive rods 23 and the threaded rods 25 mesh with each other. The extension is a straight arm structure. The first motor 21 is driven by both ends. The synchronous output power of rod 23 is converted into synchronous counter-rotation of two threaded rods 25 via a bevel gear set, ensuring symmetrical movement of the two moving blocks 27 and avoiding jamming caused by unilateral force. The threaded engagement between the threaded rods 25 and the moving blocks 27 converts the rotational motion into linear motion, which, together with the limit rod 26, eliminates radial wobble. The first and second chucks 42 achieve strictly synchronous opening and closing through half-gear meshing. Compared with independently driven dual chucks, this avoids the clamping misalignment problem caused by differences in motor response. The horizontal section of the extension and the push block 28 The planar contact transforms the linear thrust of the moving block 27 into the rotational clamping force of the chuck, amplifying the torque. When the motor stops, the threaded engagement between the threaded rod 25 and the moving block 27 naturally forms a self-locking mechanism, preventing the clamping assembly 4 from accidentally loosening under external vibration or cable tension. The limiting seat 22 of the drive rod 23 ensures accurate bevel gear meshing and prevents gear disengagement when the motor is overloaded. The opening and closing degree of the clamping assembly 4 directly controls the cable gripping force, forming a closed-loop adjustment with the linear speed of the conveying assembly 5 and the pulley position of the adjusting assembly 6.

[0036] In one embodiment, such as Figure 5 As shown, the adjustment assembly 6 consists of a base 61, a rotating handle 62, a second screw 63, a drive block 64, and a V-groove pulley 65. The inner wall of the base 61 is rotatably connected to the outer wall of the rotating handle 62. The second screw 63 is rotatably connected to the base 61. The second screw 63 is threadedly connected to the drive block 64, and the drive block 64 slides within the base 61. The top of the drive block 64 is fixedly connected to the V-groove pulley 65. By rotating the rotating handle 62, the second screw 63 is driven to rotate. Simultaneously, the rotation of the second screw 63 drives the drive block 64 to move linearly, thereby adjusting the position of the V-groove pulley 65 on the base 61. This adjusts the cable tension when the cable is wound around the V-groove pulley 65. At the same time, the adjustment assembly 6 adjusts the cable wrap angle by changing the position of the V-groove pulley 65, thereby maintaining constant tension.

[0037] In one embodiment, such as Figure 3 As shown, the first clamp 41 and the second clamp 42 are mirror images of each other along the center line of the short side of the placement plate 3. The threaded rod 25, the limiting rod 26, the moving block 27, the pushing block 28, and the fixing block 24 are also mirror images of each other along the center line of the short side of the placement plate 3. The clamping assembly 4 clamps the cable passing through the output wheel 55. The two sets of clamping assemblies 4 can work independently, so that the two cables are processed synchronously. When clamping the cable of the output wheel 55, the V-groove pulley 65 and the clamp form a triple positioning to maintain the balance of the cable during the transport.

[0038] In one embodiment, such as Figure 5 As shown, the surface of the V-groove pulley 65 is provided with a polyurethane wear-resistant layer; this avoids indentations on the cable surface, while also increasing the service life of the V-groove pulley 65 and improving its anti-slip performance.

[0039] The above embodiment discloses a constant tension electric cable tensioner, wherein a transmission component 2 drives a clamping component 4 to clamp an output wheel 55, so that the cable wound on the output wheel 55 remains stable during transportation. At the same time, an adjustment component 6 adjusts the cable tension. The adjustment component 6 adjusts the cable wrap angle by changing the position of the V-groove pulley 65, thereby maintaining constant tension. The two sets of clamping components 4 can work independently, so that two cables are processed synchronously. When clamping the cable on the output wheel 55, the V-groove pulley 65 and the clamp form a triple positioning to maintain the balance of the cable during transportation.

[0040] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A constant tension electric cable tensioner, comprising a base (1), a placement plate (3) mounted on the base (1), and an internal conveying assembly (5), characterized in that, A transmission component (2) is fixedly installed on the base (1), and the transmission component (2) drives a clamping component (4). An adjustment component (6) for adjusting cable tension is also fixedly installed on the side of the base (1). The transmission assembly (2) includes a first motor (21), a drive rod (23) fixedly installed at the output end of the first motor (21), a limiting seat (22) for limiting the drive rod (23), and a fixing block (24) fixedly installed on the top of the base (1). The fixing block (24) is rotatably connected to a threaded rod (25) and a limiting rod (26) on its side. The threaded rod (25) is threadedly connected to a moving block (27). The moving block (27) is slidably connected to the limiting rod (26), and the moving block (27) is fixedly connected to a pushing block (28). The first motor (21) is a bidirectional motor. Each end of the first motor (21) is connected to a drive rod (23). The two drive rods (23) are fixedly connected to a set of bevel gears at the ends away from the first motor (21). The threaded rod (25) is also fixedly connected to a bevel gear at the end near the drive rod (23). The drive rod (23) and the threaded rod (25) mesh with each other. The clamping assembly (4) includes a first clamp (41) and a second clamp (42) that open and close synchronously through half-gear meshing. The first clamp (41) is provided with an L-shaped extension that contacts the plane of the push block (28).

2. The constant tension electric cable tensioner according to claim 1, characterized in that, The conveying assembly (5) includes a second motor (51) and a transmission rod (54). The output end of the second motor (51) and one end of the transmission rod (54) are both provided with a rotating wheel (53). The rotating wheel (53) is a gear, and the second motor (51) and the rotating wheel (53) are connected to each other through a transmission belt (52). The end of the transmission rod (54) of the conveying assembly (5) is provided with an output wheel (55) for winding cables.

3. The constant tension electric cable tensioner according to claim 1, characterized in that, The extension is a straight arm structure.

4. A constant tension electric cable tensioner according to claim 1, characterized in that, The adjustment assembly (6) consists of a base (61), a rotating handle (62), a second screw (63), a drive block (64), and a V-groove pulley (65). The inner wall of the base (61) is rotatably connected to the outer wall of the rotating handle (62). The second screw (63) is rotatably connected to the base (61). The second screw (63) is threadedly connected to the drive block (64), and the drive block (64) slides within the base (61). The top of the drive block (64) is fixedly connected to the V-groove pulley (65).

5. A constant tension electric cable tensioner according to claim 2, characterized in that, The first clamp (41) and the second clamp (42) are provided in two sets mirror images along the short side centerline of the placement plate (3).

6. A constant tension electric cable tensioner according to claim 2, characterized in that, The clamping assembly (4) clamps the cable passing through the output wheel (55).

7. A constant tension electric cable tensioner according to claim 1, characterized in that, The threaded rod (25), the limiting rod (26), the moving block (27), the pushing block (28), and the fixing block (24) are all provided in two sets mirror images along the short side centerline of the placement plate (3).

8. A constant tension electric cable tensioner according to claim 4, characterized in that, The surface of the V-groove pulley (65) is provided with a polyurethane wear-resistant layer.

Images