A line winding device with an overload protection structure

Abstract

This utility model relates to the field of cable reel technology, and more particularly to a cable reel tension adjustment device with an overload protection structure. The technical solution includes a mounting base, a reel, a winding roller, a motor, a stroke plate, a reciprocating screw, and a guide wheel frame. A mounting bracket is internally mounted on the upper end of the mounting base, and a spring is installed between the mounting bracket and the mounting base. The winding roller is rotatably mounted inside the mounting bracket, with a driven gear at one end of the roller. A drive gear is installed at the output end of the motor. A bearing bracket is located at the front end of the mounting base, and a reciprocating screw is rotatably mounted inside the bearing bracket. A reciprocating nut is sleeved on the outer wall of the reciprocating screw, with a guide ring at the upper end of the reciprocating nut and a stroke plate at the lower end. This utility model, through the elastically supported guide wheel and the overload protection structure to prevent continuous rotation of the winding roller, avoids the problem of excessive winding of the wire leading to tension increase and resulting in wire and winding structure damage.

Description

Technical Field

[0001] This utility model relates to the field of cable reel technology, and in particular to a cable reel tension adjustment device with an overload protection structure. Background Technology

[0002] A cable reel is a mechanical device used to reel in and unreel cables (such as power cords, water pipes, wire ropes, etc.). It typically includes a drum, a support, a handle or motor drive mechanism, and possibly a braking and guiding system, for efficient and neat cable winding and unwinding.

[0003] A slight asynchrony between the wire rope winding device and the production line's wire feeding structure can lead to excessive tension on the wire, increasing wear and tear on the winding structure and the wire itself. For example, in household water pipe winding, the connection between the water pipe and the spray nozzle is often excessively stretched due to the nozzle's limiting effect, increasing wear and tear. To address this issue, we propose a wire rope tension adjustment device with overload protection to solve the existing problems. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing a tension adjustment device for a cable reel with an overload protection structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tension adjusting device for a winding reel with an overload protection structure, comprising a mounting base, a winding roller, a motor, a stroke plate, a reciprocating screw, and a guide wheel frame. A mounting bracket is provided inside the upper end of the mounting base. Two springs are symmetrically distributed between the mounting bracket and the mounting base. A winding roller is rotatably mounted inside the mounting bracket. A driven gear is provided at one end of the winding roller. A drive gear meshing with the driven gear is provided at the output end of the motor. Symmetrically distributed bearing supports are provided at the front end of the mounting base. A reciprocating screw is rotatably mounted inside the bearing supports. A reciprocating nut is sleeved on the outer wall of the reciprocating screw. A guide ring is provided at the upper end of the reciprocating nut. A stroke plate is provided at the lower end of the reciprocating nut. A guide wheel frame is provided behind the stroke plate.

[0006] Preferably, limit wheels are fitted onto the outer walls of both ends of the roller, and a sliding sleeve is embedded inside the travel plate. Guide rods connected to the mounting base at both ends are slidably installed inside the sliding sleeve. The limit wheels limit the wire being wound by the roller, preventing the accumulated wire from collapsing from both sides. The travel plate slides along the outer wall of the guide rod via the sliding sleeve, providing sliding guidance for the travel plate.

[0007] Preferably, both the reciprocating screw and the motor output end are fitted with synchronous pulleys, and a belt is fitted onto the outer wall of the synchronous pulley. The linkage between the synchronous pulley and the belt allows the rotational power of the motor output shaft to be transmitted to the reciprocating screw.

[0008] Preferably, the second spring internally comprises an oil cylinder and a stopper rod that are slidably connected and have opposite ends connected to the mounting base and mounting bracket. A sealing ring, slidably mounted to the stopper rod, is embedded inside the upper end of the oil cylinder. A piston, slidably mounted inside the oil cylinder, is located at the lower end of the stopper rod. A gap is provided between the outer side of the piston and the inner wall of the spring. The second spring internally incorporates a hydraulic oil damping structure to prevent irregular vibration of the overload protection structure under stress, thus ensuring the stability of the first spring's extension and contraction.

[0009] Preferably, the inner wall of the guide ring is rotatably fitted with balls arranged in a circular array, and both ends of the guide ring have inwardly recessed chamfers. The balls reduce friction and resistance when the wire passes through, and the chamfers further reduce friction as the wire passes through.

[0010] Preferably, a top plate is sleeved on the upper outer wall of the travel plate, and guide rails are provided at both ends of the travel plate. A slider connected to the guide wheel frame is slidably installed on the outer wall of the guide rail, and a spring is provided between the slider and the top plate. The top plate and the slider are elastically installed by the spring, so that the short-stroke wire can be adjusted adaptively by the displacement of the guide wheel frame driven by the slider.

[0011] Preferably, the spring has a slidably inserted positioning rod and a positioning cylinder, with opposite ends connected to the top plate and the slider. During the extension and retraction of the spring, the positioning rod slides inside the positioning cylinder, preventing the spring from shifting outward and ensuring stable extension and retraction.

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

[0013] This utility model's tension adjustment device for a winding reel with overload protection is driven by a motor, causing the winding roller to wind up wire (such as power cords, water pipes, steel wire ropes, etc.). During the winding process, the reciprocating screw and reciprocating nut work together to automatically straighten the wire, which is evenly wound around the outer wall of the winding roller. The straightening structure is driven by a motor through a linkage structure. When the wire tension increases due to excessive winding stroke, the drive gear will push the driven gear to lift and briefly lose engagement, avoiding damage to the wire and the winding structure of the winding reel caused by excessive winding. This achieves effective overload protection for the wire. The elastically supported guide wheel frame allows for adaptive adjustment of tension during small strokes, making it convenient and stable to use. Attached Figure Description

[0014] Figure 1 This is a front-view three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a side perspective three-dimensional structural diagram of the mounting base of this utility model;

[0016] Figure 3This is a side-view three-dimensional structural diagram of the synchronous pulley of this utility model;

[0017] Figure 4 This is a side view of the three-dimensional structure of the travel plate of this utility model;

[0018] Figure 5 This is a three-dimensional cross-sectional view of the oil cylinder of this utility model;

[0019] Figure 6 This is a side-view three-dimensional structural diagram of the guide ring of this utility model.

[0020] Reference numerals: 1. Mounting base; 2. Mounting bracket; 3. Roller; 4. Limit wheel; 5. Bearing bracket; 6. Motor; 7. Stroke plate; 8. Guide rod; 9. Reciprocating screw; 10. Driven gear; 11. Synchronous pulley; 12. Belt; 13. Drive gear; 14. Guide ring; 15. Reciprocating nut; 16. Top plate; 17. Spring 1; 18. Positioning rod; 19. Positioning cylinder; 20. Guide wheel frame; 21. Slider; 22. Ball bearing; 23. Guide rail; 24. Sliding sleeve; 25. Plug rod; 26. Spring 2; 27. Sealing ring; 28. Gap; 29. ​​Oil cylinder; 30. Piston; 31. Inner chamfer. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-6 As shown, the present invention proposes a tension adjustment device for a winding reel with an overload protection structure, comprising a mounting base 1, a winding roller 3, a motor 6, a stroke plate 7, a reciprocating screw 9, and a guide wheel frame 20. A mounting frame 2 is provided inside the upper end of the mounting base 1. Symmetrically distributed springs 26 are provided between the mounting frame 2 and the mounting base 1. The winding roller 3 is rotatably mounted inside the mounting frame 2. A driven gear 10 is provided at one end of the winding roller 3. A drive gear 13 meshing with the driven gear 10 is provided at the output end of the motor 6. Symmetrically distributed bearing supports 5 are provided at the front end of the mounting base 1. A reciprocating screw 9 is rotatably mounted inside the bearing supports 5. A reciprocating nut 15 is sleeved on the outer wall of the reciprocating screw 9. A guide ring 14 is provided at the upper end of the reciprocating nut 15. A stroke plate 7 is provided at the lower end of the reciprocating nut 15. A guide wheel frame 20 is provided on the rear side of the stroke plate 7.

[0023] Limiting wheels 4 are fitted onto the outer walls of both ends of the roller 3. A sliding sleeve 24 is embedded inside the stroke plate 7. Guide rods 8 connected to the mounting base 1 at both ends are slidably installed inside the sliding sleeve 24.

[0024] Both the reciprocating screw 9 and the output end of the motor 6 are fitted with synchronous pulleys 11, and belts 12 are fitted onto the outer wall of the synchronous pulleys 11.

[0025] The spring 26 has an oil cylinder 29 and a plug rod 25 that are slidably connected and opposite to each other and connected to the mounting base 1 and the mounting bracket 2. The upper end of the oil cylinder 29 has a sealing ring 27 that is slidably installed with the plug rod 25. The lower end of the plug rod 25 has a piston 30 that is slidably installed inside the oil cylinder 29. A gap 28 is provided between the outer side of the piston 30 and the inner wall of the piston.

[0026] The inner wall of the guide ring 14 is rotatably mounted with balls 22 arranged in a ring array, and both ends of the guide ring 14 are provided with inwardly recessed inner chamfers 31.

[0027] A top plate 16 is sleeved on the upper outer wall of the stroke plate 7. Guide rails 23 are provided at both ends of the stroke plate 7. A slider 21 connected to the guide wheel frame 20 is slidably installed on the outer wall of the guide rail 23. A spring 17 is provided between the slider 21 and the top plate 16.

[0028] The spring 17 has a positioning rod 18 and a positioning cylinder 19 inside, which are slidably connected and distributed at opposite ends to the top plate 16 and the slider 21.

[0029] Based on the implementation steps of Example 1: The wire (steel wire rope / water pipe, etc.) is passed through the guide ring 14 of the guide wheel frame 20 and the end is fixed to the winding roller 3. The ball bearings 22 and inner chamfer 31 on the inner wall of the guide ring 14 significantly reduce the frictional resistance of the wire. The motor 6 is started, and the drive gear 13 drives the driven gear 10 to rotate through meshing, so that the winding roller 3 winds up the wire. At the same time, the output end of the motor 6 is linked to the reciprocating screw 9 through the synchronous pulley 11 and the belt 12 to rotate. The rotation of the reciprocating screw 9 pushes the reciprocating nut 15 to move horizontally, which drives the guide ring 14 to move back and forth, guiding the wire to be evenly wound on the winding roller 3. The limit wheels 4 on both sides prevent the wire from collapsing.

[0030] Small stroke tension adaptive: If the wire is slightly stuck (such as the nozzle is temporarily limited), the tension increases and pushes the guide wheel frame 20 to move upward → the slider 21 slides along the guide rail 23 → compressing the spring 17 between the top plate 16 and the slider 21. The positioning rod 18 and positioning cylinder 19 inside the spring 17 ensure stable extension and contraction, and the elastic deformation absorbs tension fluctuations to avoid hard pulling.

[0031] In high-tension overload scenarios (such as nozzle jamming or forced locking of the wire end): the winding roller 3 is subjected to reverse tension → the mounting frame 2 overcomes the supporting force of the spring-17 and rises upward → the driven gear 10 disengages from the drive gear 13 → the winding roller 3 stops rotating, and the hydraulic damping structure inside the spring-17 (oil cylinder 29 plus plug rod 25 plus piston 30) operates synchronously. The gap 28 between the piston 30 and the inner wall of the oil cylinder 29 controls the hydraulic oil flow rate, suppresses the vibration of the mounting frame 2, and ensures a smooth overload response. After the external resistance is removed, the spring-17 pushes the mounting frame 2 to reset, the gears re-engage, and normal winding resumes.

[0032] The travel plate 7 slides along the guide rod 8 via the sliding sleeve 24 to ensure horizontal movement accuracy. The guide rail 23 and the slider 21 provide longitudinal sliding guidance for the guide wheel frame 20. The wire travels along the inner wall of the lower end of the guide wheel frame 20 and is subjected to tensile support force. The elastic support provided by the spring-17 and the overload protection of the winding roller 3 form a dual buffer system, covering all scenarios from micro-tension fluctuations to extreme overloads, and eliminating micro-differential damage. Traditional wire reels suffer wire tension loss due to the difference between the wire feeding and winding speeds on the production line (such as tearing at the water pipe nozzle connection). This device dynamically adjusts the height of the guide wheel frame 20 through the elastic mechanism of the spring-17 to offset the tension caused by the speed difference in real time. When the overload exceeds the limit (such as nozzle jamming), the gear disengagement mechanism quickly cuts off the power, completely preventing the wire or winding structure, as well as the wire end connector, from breaking.

[0033] The structure of the inner oil cylinder 29 and the plug rod 25 of the spring 26 suppresses mechanical vibration during the protection action and avoids secondary damage to the gears during the reset process. The inner chamfer 31 of the guide ring 14 and the ball 22 reduces the friction loss of the wire and protects the surface coating of the wire rope. The linkage automatic wire laying of the reciprocating screw 9 and the reciprocating nut 15 ensures that the wire is tightly and evenly wound, improves the winding capacity, and reduces manual intervention. The overload protection can avoid the risk of wire breakage and rebound caused by strong pulling in traditional equipment. The dual-stage tension control of the elastic guide wheel frame 20 for fine adjustment and gear engagement and disengagement, combined with hydraulic damping anti-vibration, low friction guide ring 14 and linkage wire laying system, solves the problem of overload damage caused by the difference in winding / unwinding speed of the winding machine. It is especially suitable for wire scenarios with limit devices (such as nozzles and fixed joints) at the end, avoiding hard damage while achieving synergistic optimization of winding efficiency and equipment life.

[0034] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A line tension adjustment device with overload protection structure of a line winder, comprising a mounting base (1), a winding roller (3), a motor (6), a stroke plate (7), a reciprocating screw rod (9) and a guide wheel frame (20), characterized in that: The mounting base (1) is provided with a mounting frame (2) inside the upper end. A symmetrically distributed spring (26) is provided between the mounting frame (2) and the mounting base (1). A roller (3) is rotatably installed inside the mounting frame (2). A driven gear (10) is provided at one end of the roller (3). A drive gear (13) that meshes with the driven gear (10) is provided at the output end of the motor (6). A symmetrically distributed bearing bracket (5) is provided at the front end of the mounting base (1). A reciprocating screw (9) is rotatably installed inside the bearing bracket (5). A reciprocating nut (15) is sleeved on the outer wall of the reciprocating screw (9). A guide ring (14) is provided at the upper end of the reciprocating nut (15). A stroke plate (7) is provided at the lower end of the reciprocating nut (15). A guide wheel frame (20) is provided on the rear side of the stroke plate (7).

2. A line tension control device for a line winding apparatus with an overload protection structure according to claim 1, characterized in that: The roller (3) has limit wheels (4) fitted on the outer walls of both ends. The travel plate (7) has a sliding sleeve (24) embedded inside. The sliding sleeve (24) has guide rods (8) with both ends connected to the mounting base (1) slidably installed inside.

3. A line tension control device for a line winding apparatus having an overload protection structure according to claim 1, characterized in that: Both the reciprocating screw (9) and the output end of the motor (6) are fitted with a synchronous pulley (11), and a belt (12) is fitted on the outer wall of the synchronous pulley (11).

4. The tension control device for string winding apparatus with overload protection according to claim 1, characterized in that: The spring 2 (26) is provided with an oil cylinder (29) and a plug rod (25) that are slidably inserted and connected to the mounting base (1) and the mounting bracket (2) at opposite ends. The upper end of the oil cylinder (29) is fitted with a sealing ring (27) that is slidably installed with the plug rod (25). The lower end of the plug rod (25) is provided with a piston (30) that is slidably installed inside the oil cylinder (29). A gap (28) is provided between the outer side of the piston (30) and the useful inner wall.

5. A tension adjusting device for a winding reel with an overload protection structure according to claim 1, characterized in that: The inner wall of the guide ring (14) is rotatably fitted with balls (22) arranged in a ring array, and both ends of the guide ring (14) are provided with inwardly recessed inner chamfers (31).

6. The tension adjustment device for a winding reel with overload protection structure according to claim 1, characterized in that: The upper outer wall of the travel plate (7) is fitted with a top plate (16). Both ends of the travel plate (7) are provided with guide rails (23). The outer wall of the guide rails (23) is slidably installed with a slider (21) connected to the guide wheel frame (20). A spring (17) is provided between the slider (21) and the top plate (16).

7. A tension adjusting device for a winding reel with an overload protection structure according to claim 6, characterized in that: The spring (17) is provided with a positioning rod (18) and a positioning cylinder (19) that are slidably plugged in and distributed at opposite ends to the top plate (16) and the slider (21).

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