Cable threading operation pulling device

Abstract

The utility model discloses a kind of cable threading operation traction equipment, including the direction of incoming line of cable sequentially arranged guide wheel, tension pulley and self-locking component, self-locking component includes two groups of symmetrically arranged pay-off wheel, pre-tightening force adjusting structure is provided between two groups of pay-off wheel, pre-tightening force adjusting structure is used to adjust the size of the deformable installation space between two groups of pay-off wheel;The top of tension pulley is higher than the bottom of guide wheel and the bottom of pay-off wheel located on the upper side, the movable end of cable passes through the bottom of guide wheel, the top of tension pulley and the opposite surface of two groups of pay-off wheel, and is threaded out, and the pre-tightening force of pre-tightening force adjusting structure is applied to clamp cable between two groups of pay-off wheel.The traction equipment is limited by trajectory and pre-tightening clamping, avoids pay-off swing and excess outgoing line from source, ensures outgoing trajectory stability.

Description

Technical Field

[0001] This utility model relates to the technical field of cable traction equipment, specifically a cable threading traction device. Background Technology

[0002] In cable threading operations in fields such as power engineering and building electrical systems, traction equipment is typically used to guide and control the cable laying in order to improve threading efficiency and reduce manual labor intensity. Cable threading operations require a high degree of precision in laying the cable. If the cable swings violently or the laying amount becomes out of control during the laying process, it can easily lead to disordered cable exit, tangling, and knotting. This will not only delay the construction progress but may also cause damage to the insulation layer due to friction between the cables, leaving safety hazards.

[0003] Existing cable traction equipment generally suffers from the following defects: it lacks a reliable cable clamping and pre-tightening adjustment structure. Most equipment only uses simple guide wheels for limiting, which cannot form a stable clamping force on the cable. This causes the cable to swing radially during the laying process, and when the traction speed fluctuates, the phenomenon of "over-laying" is likely to occur, causing cable outage disorder. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a cable threading traction device to solve the technical problems mentioned in the prior art.

[0005] A cable threading traction device includes a guide wheel, a tensioning wheel, and a self-locking assembly arranged sequentially along the cable's infeed direction. The self-locking assembly includes: Two sets of symmetrically arranged wire feeding reels are provided, and a preload adjustment structure is provided between the two sets of wire feeding reels. The preload adjustment structure is used to adjust the size of the deformable installation space between the two sets of wire feeding reels. The top of the tensioning wheel is higher than the bottom of the guide wheel and the bottom of the pay-off wheel located on the upper side. The movable end of the cable passes through the bottom of the guide wheel, the top of the tensioning wheel and the opposite surfaces of the two sets of pay-off wheels before exiting. The cable is clamped between the two sets of pay-off wheels by the pre-tensioning force applied by the pre-tensioning force adjustment structure.

[0006] Optionally, the preload adjustment structure includes support plates installed at both ends of each of the wire feeding wheels, and mounting portions are respectively provided on the side of two adjacent support plates away from the wire feeding wheels, and tension springs are installed between the opposite surfaces of two adjacent mounting portions.

[0007] Optionally, a guide post is provided between the opposite faces of two adjacent mounting parts, one end of the guide post is mounted on one of the mounting parts, and the other end of the guide post passes through the other mounting part and is threaded with a first adjusting nut.

[0008] Optionally, the outer surface of the wire feeding reel is provided with multiple sets of wire feeding grooves along its axial direction, and the openings of the wire feeding grooves are inclined to both sides.

[0009] Optionally, the wire feeding groove is arranged in a circumferential manner along the outer surface of the wire feeding wheel.

[0010] Optionally, the guide wheel, tension wheel, and self-locking assembly are integrally mounted on the fixed plate.

[0011] Optionally, the tensioning wheel is telescopically oriented along the direction of the cable's inlet, wherein: The tensioning wheel is rotatably mounted on the fixed frame, and the fixed frame is mounted on the fixed plate through several sets of elastic telescopic components.

[0012] Optionally, the elastic telescopic member includes: A guide rod, one end of which is mounted on the fixed plate, and the other end of which passes through the fixed frame and is fitted with a second adjusting nut; A spring is sleeved on the guide rod, and the two ends of the spring are respectively connected to the opposite surfaces of the fixing frame and the fixing plate.

[0013] The beneficial effects that this utility model can produce include: 1. The cable threading traction device provided by this utility model, by sequentially arranging guide wheels, tension wheels and self-locking components along the cable entry direction, and optimizing the height layout of the three (the top of the tension wheel is higher than the bottom of the guide wheel and the bottom of the upper cable feeding wheel), enables the cable to form a stable "guide-tension-clamping" transmission path; at the same time, the self-locking component applies a stable clamping force to the two sets of cable feeding wheels through the pre-tension force adjustment structure, reliably clamping the cable between the two sets of cable feeding wheels, fundamentally suppressing the radial swing of the cable during the cable feeding process, avoiding the phenomenon of "over-feeding", and ensuring a stable cable exit trajectory.

[0014] 2. This utility model uses an elastic telescopic component to rotate and install the tensioning wheel on the fixed plate, allowing the tensioning wheel to extend and retract along the direction perpendicular to the cable inlet. When the cable release speed is uneven or the instantaneous tension is too large, the pressure of the cable on the tensioning wheel will compress the spring of the elastic telescopic component. The elastic deformation of the spring absorbs the tension fluctuation, achieving flexible buffering of the cable. This effectively reduces the swaying amplitude of the cable and avoids construction safety risks and cable damage caused by violent shaking. Compared with the existing fixed tensioning structure, the buffering effect is significantly improved.

[0015] 3. This utility model features multiple sets of circumferentially inclined cable-feeding grooves on the outer surface of the cable-feeding reel along the axial direction. The inclined structure provides precise guidance for the cable, preventing cable deviation. Simultaneously, the cable-feeding grooves are arranged circumferentially along the cable-feeding reel, allowing the reel to rotate synchronously with the cable during the cable-feeding process. This transforms traditional sliding friction into rolling friction, significantly reducing the coefficient of friction between the cable and the cable-feeding reel. Furthermore, the tensioning wheel employs a rotating installation method, further reducing wear on the contact points between the cable and the equipment, effectively protecting the cable insulation layer and extending the cable's service life.

[0016] 4. The preload adjustment structure of this utility model provides basic clamping force through a tension spring, and at the same time, the upper limit of the deformable installation space between the two sets of wire feeding wheels can be adjusted by the cooperation of the guide post and the first adjusting nut. When threading cables of different diameters, the distance between the wire feeding wheels can be adjusted by simply rotating the first adjusting nut, so that the equipment can stably clamp cables of different sizes and provide a suitable preload. This solves the limitation of existing equipment that can only adapt to a single specification of cable, and improves the versatility and applicable scenario coverage of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a cable threading traction device according to the present invention; Figure 2 In this utility model Figure 1 A simplified structural diagram for the threading stage; In the diagram: 1. Fixed plate, 2. Guide wheel, 3. Tensioning wheel, 4. Wire feeding wheel, 5. Support plate, 6. Mounting part, 7. Tension spring, 8. Guide post, 9. First adjusting nut, 10. Wire feeding groove, 11. Fixed frame, 12. Guide rod, 13. Spring, 14. Second adjusting nut. Detailed Implementation

[0018] 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.

[0019] Please see Figure 1 and Figure 2As shown, this utility model provides a cable threading traction device, including a guide wheel 2, a tensioning wheel 3, and a self-locking assembly arranged sequentially along the cable's entry direction. The self-locking assembly includes two symmetrically arranged cable-feeding wheels 4, with a pre-tensioning force adjustment structure between the two sets of cable-feeding wheels 4. The pre-tensioning force adjustment structure is used to adjust the deformable installation space between the two sets of cable-feeding wheels 4. The top of the tensioning wheel 3 is higher than the bottom of the guide wheel 2 and the bottom of the cable-feeding wheel 4 located on the upper side. The movable end of the cable passes through the bottom of the guide wheel 2, the top of the tensioning wheel 3, and the opposite surfaces of the two sets of cable-feeding wheels 4 before exiting. The cable is clamped between the two sets of cable-feeding wheels 4 by the pre-tensioning force applied by the pre-tensioning force adjustment structure. This traction device, through trajectory limiting and pre-tensioning clamping, prevents cable swaying and excessive cable delivery from the source, ensuring a stable cable delivery trajectory.

[0020] Furthermore, such as Figure 1 As shown, the preload adjustment structure includes support plates 5 installed at both ends of each pay-off reel 4. Mounting portions 6 extend outwards from the sides of adjacent support plates 5 away from the pay-off reel 4, and tension springs 7 are installed between the opposing surfaces of adjacent mounting portions 6. These tension springs 7 provide a pulling force to the two sets of pay-off reels 4, thus applying a corresponding preload to the cable. Specifically, guide posts 8 are provided between the opposing surfaces of adjacent mounting portions 6. One end of the guide post 8 is installed on one of the mounting portions 6, and the other end passes through the other mounting portion 6 and is threaded with a first adjusting nut 9. This allows adjustment of the upper limit of the deformable mounting space between the two sets of pay-off reels 4 via the first adjusting nut 9, adapting to cables of different diameters while ensuring uniform and controllable preload. Specifically, before threading the cable, the deformable mounting space between the two sets of pay-off reels 4 is stretched to its upper limit as shown in the diagram. Figure 1 As shown, after the cable is threaded through, the top feed wheel 4 is released. At this time, the tension spring 7 pulls the two sets of feed wheels 4 toward the side that is closer to each other, thereby stably clamping the cable.

[0021] Furthermore, such as Figure 1 As shown, the outer surface of the wire feeding reel 4 has multiple sets of wire feeding grooves 10 along its axial direction. The openings of the wire feeding grooves 10 are inclined to both sides to facilitate the guidance and feeding of the cable and improve the traction effect. Among them, the wire feeding grooves 10 are arranged in a ring around the outer surface of the wire feeding reel 4 to ensure that the reel and the cable rotate synchronously during wire feeding, which greatly reduces the wear of the cable sheath caused by sliding friction.

[0022] Furthermore, such as Figure 1 As shown, the guide wheel 2, tension wheel 3 and self-locking assembly are integrated and mounted on the fixing plate 1, which facilitates the quick installation of the fixing plate 1 to the cable reel outlet or designated traction area, thereby improving efficiency. The fixing plate 1 is detachably installed to the cable reel outlet or traction area using a threaded connection with the pre-set anchor bolts.

[0023] In the above, such as Figure 1 As shown, the tensioning wheel 3 is telescopically mounted along the direction of the cable's entry. The tensioning wheel 3 is rotatably mounted on the fixed frame 11, further reducing wear during cable laying. The fixed frame 11 is mounted on the fixed plate 1 via several sets of elastic telescopic components, enhancing the buffering effect of the traction equipment and preventing large-scale cable swaying during traction, thus ensuring safe operation. Specifically, the elastic telescopic components include a guide rod 12 and a spring 13. One end of the guide rod 12 is mounted on the fixed plate 1, and the other end passes through the fixed frame 11 and is fitted with a second adjusting nut 14. The spring 13 is sleeved on the guide rod 12, and both ends of the spring 13 are connected to the opposite surfaces of the fixed frame 11 and the fixed plate 1, respectively. During cable traction and laying, when the laying speed is uneven or the instantaneous tension is too large, the pressure of the cable on the tensioning wheel 3 will compress the spring 13. The elastic deformation of the spring 13 absorbs the tension fluctuations, achieving flexible buffering of the cable, effectively reducing the cable's swaying amplitude, and avoiding construction safety risks and cable damage caused by violent shaking. Compared with existing fixed tensioning structures, the buffering effect is significantly improved.

Claims

1. A cable threading traction device, characterized in that, It includes a guide wheel (2), a tensioning wheel (3), and a self-locking assembly arranged sequentially along the cable's inlet direction. The self-locking assembly includes: Two sets of symmetrically arranged wire feeding wheels (4) are provided, and a pre-tightening force adjustment structure is provided between the two sets of wire feeding wheels (4). The pre-tightening force adjustment structure is used to adjust the size of the deformable installation space between the two sets of wire feeding wheels (4). The top of the tensioning wheel (3) is higher than the bottom of the guide wheel (2) and the bottom of the pay-off wheel (4) located on the upper side. The movable end of the cable passes through the bottom of the guide wheel (2), the top of the tensioning wheel (3) and the opposite surfaces of the two sets of pay-off wheels (4) before exiting. The cable is clamped between the two sets of pay-off wheels (4) by the pre-tensioning force applied by the pre-tensioning force adjustment structure.

2. The cable threading traction device according to claim 1, characterized in that, The preload adjustment structure includes support plates (5) installed at both ends of each of the wire feeding wheels (4), and mounting portions (6) are respectively provided on the side of the two adjacent support plates (5) away from the wire feeding wheels (4), and tension springs (7) are installed between the opposite surfaces of the two adjacent mounting portions (6).

3. The cable threading traction device according to claim 2, characterized in that, A guide post (8) is provided between the opposite faces of two adjacent mounting parts (6). One end of the guide post (8) is mounted on one of the mounting parts (6), and the other end of the guide post (8) passes through the other mounting part (6) and is threaded with a first adjusting nut (9).

4. The cable threading traction device according to claim 1, characterized in that, The outer surface of the wire feeding wheel (4) is provided with multiple sets of wire feeding grooves (10) along its axial direction, and the openings of the wire feeding grooves (10) are inclined to both sides.

5. A cable threading traction device according to claim 4, characterized in that, The wire feeding groove (10) is arranged in a ring around the outer surface of the wire feeding wheel (4).

6. The cable threading traction device according to claim 1, characterized in that, The guide wheel (2), tension wheel (3) and self-locking assembly are installed as a whole on the fixed plate (1).

7. A cable threading traction device according to claim 6, characterized in that, The tensioning wheel (3) is telescopically oriented along the direction of the vertical cable inlet, wherein: The tensioning wheel (3) is rotatably mounted on the fixed frame (11), and the fixed frame (11) is mounted on the fixed plate (1) through a number of elastic telescopic components.

8. A cable threading traction device according to claim 7, characterized in that, The elastic telescopic component includes: The guide rod (12) has one end mounted on the fixed plate (1) and the other end is mounted with a second adjusting nut (14) through the fixed frame (11). A spring (13) is sleeved on the guide rod (12), and the two ends of the spring (13) are respectively connected to the opposite surfaces of the fixing frame (11) and the fixing plate (1).

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