Traction device for power cable former

Abstract

The utility model relates to the technical field of cable traction, and discloses a traction device for a power cable former, which comprises a main board, a U-shaped board, a conveyor belt and a connecting frame. The design of the elastic band allows the elastic band to slightly deform when the elastic band is pressed, so that the cable is wrapped adaptively, the contact area is increased, the pressure distribution is more uniform, the overlarge pressure can be buffered, and the cable insulation layer is protected. The upper rollers and the whole conveying belt are distributed in the length direction of the traction channel, and a plurality of continuous clamping traction points are formed. According to the design, the cable is uniformly, continuously and stably stressed in the whole traction process, and the problems of cable torsion, surface scratch or sudden change of traction force possibly caused by single-point traction are effectively avoided. And the cable is stably pulled to pass through the whole device and is conveyed to the next working procedure.

Description

Technical Field

[0001] This utility model relates to the field of cable traction technology, specifically to a traction device for a power cable cabling machine. Background Technology

[0002] In the manufacturing process of power cables, cabling is a crucial step, involving twisting together components such as insulated cores and fillers to form a complete cable core. During this process, the stability and reliability of the traction device are paramount. It is responsible for providing continuous and uniform traction force to the cable core, ensuring its smooth passage through the cabling machine and winding onto the take-up reel. Currently, most common traction devices are wheel-type. Traditional wheel-type traction devices clamp and drag the cable using several pairs of clamping rollers. However, this point-contact or line-contact method can lead to excessive pressure concentration on the cable surface, posing a risk of scratching the cable sheath or flattening the soft filler material. This problem is particularly prominent for large-diameter or special cables requiring a pristine surface. Furthermore, improper roller pressure adjustment or slight cable movement can easily cause fluctuations in traction force or even slippage, affecting the uniformity of the cabling pitch and the continuity of the production process. Utility Model Content

[0003] The main purpose of this utility model is to provide a traction device for a power cable cabling machine to solve the problem that the existing contact or line contact methods may cause excessive pressure concentration on the cable surface, which may scratch the cable outer sheath or flatten the soft filling material.

[0004] To achieve the above objectives, this utility model provides a traction device for a power cable cabling machine, including a main board, a U-shaped plate, a conveyor belt, and a connecting frame;

[0005] A U-shaped plate is fixed on the main board, and the opening of the U-shaped plate forms a traction channel. Multiple lower rollers are evenly distributed along the length of the U-shaped plate.

[0006] The conveyor belt is mounted on multiple lower rollers and is located directly below the traction channel. The conveyor belt includes two elastic belts, on which multiple strip plates are evenly distributed and fixed. The lower rollers at the end of the conveyor are connected to a drive mechanism for rotating them.

[0007] The connecting frame is fixedly connected to the main board, and the base frame can be raised and lowered in the middle and upper part. Multiple upper rollers are evenly distributed on the base frame along the length of the traction channel, and the multiple upper rollers are located directly above the traction channel.

[0008] Preferably, the drive mechanism includes a gearbox and a motor. The output end of the gearbox is connected to the lower roller located at the tail end of the conveyor, and the input end is connected to the output shaft of the motor. The gearbox is fixedly connected to the main board.

[0009] Preferably, the base frame includes two parallel horizontal plates, and multiple upper rollers are mounted on the two horizontal plates.

[0010] Preferably, the connecting frame includes four vertical plates and two pressing rods, with the bottom ends of the four vertical plates fixed on the main plate and arranged in a matrix;

[0011] Each vertical plate has a strip-shaped groove at its top along its height direction, and two vertical plates are set on each side of the traction channel;

[0012] Two pressing rods pass through the two ends of two horizontal plates, and each end passes through two strip-shaped through slots with threaded sections. The threaded sections are screwed to the first nut.

[0013] Two pressure rods are arranged along the length of the traction channel.

[0014] Preferably, guide mechanisms are provided at both the front and rear ends of the traction channel;

[0015] The guiding mechanism includes a mounting plate and two limiting rods. The mounting plate is fixedly connected to one end of the U-shaped plate, and the bottom ends of the two limiting rods are fixed on the mounting plate. The distance between the two limiting rods forms a guiding channel, and the guiding channel and the traction channel are at the same height.

[0016] Preferably, each mounting plate has two transverse slots along the vertical direction of the traction channel. The two transverse slots correspond one-to-one with two limiting rods. One end of each limiting rod is coaxially connected to a threaded rod, and the threaded rod passes through the transverse slot and is screwed with a second nut.

[0017] Preferably, an arc-shaped groove for cable laying is provided on the outer wall of the middle section of each strip plate.

[0018] Preferably, each strip is made of rubber.

[0019] The beneficial effects of the above scheme are:

[0020] Depending on the diameter of the cable to be pulled, the height of the base frame is adjusted on the connecting frame to change the gap between the upper roller and the upper surface of the conveyor belt. This gap should be slightly smaller than the cable diameter to ensure that when the cable passes through, the upper roller, in conjunction with the elastic belt, can generate sufficient contact pressure and clamping force on the cable, while avoiding damage to the cable. The drive mechanism is activated, driving the lower roller at the end of the conveyor belt connected to it to rotate. Since all the lower rollers are linked through the conveyor belt, the entire conveyor belt begins to circulate in the traction direction. The cable from the previous process is fed into the traction channel formed by the opening of the U-shaped plate. The cable first enters the clamping area between the upper roller and the conveyor belt. The strip plates on the conveyor belt increase the friction with the cable surface. The upper roller presses the cable down under pressure, and the cable is simultaneously subjected to the combined action of the moving conveyor belt below and the rotating upper roller above. The moving conveyor belt provides the main forward traction force through the friction between the strip plates on its surface and the cable. The driven rotation of multiple upper rollers primarily serves to clamp and guide the cable, preventing slippage or exiting the traction channel. It also evenly distributes the traction force across the cable circumference, ensuring smooth and straight cable movement. The multiple upper rollers and the entire conveyor belt are distributed along the length of the traction channel, forming multiple continuous clamping and traction points. This design ensures that the cable experiences uniform, continuous, and stable force throughout the traction process, effectively avoiding problems such as cable twisting, surface scratches, or sudden changes in traction force that can occur with single-point traction. The cable is smoothly pulled through the entire device and transported to the next process. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

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

[0024] Figure 3 yes Figure 2 A structural diagram from another perspective.

[0025] Explanation of reference numerals in the attached figures

[0026] 1. Main board; 2. U-shaped plate; 20. Traction channel; 3. Lower roller; 4. Conveyor belt; 41. Elastic belt; 42. Strip plate; 420. Arc groove; 5. Drive mechanism; 51. Gearbox; 52. Motor; 6. Connecting frame; 61. Vertical plate; 62. Pressing rod; 610. Strip through groove; 63. First nut; 7. Base frame; 71. Upper roller; 72. Horizontal plate; 8. Guide mechanism; 81. Mounting plate; 82. Limiting rod; 83. Guide channel; 84. Horizontal groove; 85. Threaded rod; 86. Second nut; 9. Cable. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Example:

[0029] like Figures 1-3 As shown, this embodiment provides a traction device for a power cable cabling machine, including a main board 1, a U-shaped plate 2, a conveyor belt 4, and a connecting frame 6. The U-shaped plate 2 is fixed on the main board 1, and the opening of the U-shaped plate 2 forms a traction channel 20, as shown... Figure 2 As shown, a U-shaped plate 2 has multiple lower rollers 3 evenly distributed along its length. A conveyor belt 4 is fitted onto the lower rollers 3 and is located directly below the traction channel 20. The conveyor belt 4 includes two elastic belts 41, on which multiple strip plates 42 are evenly distributed and fixed. Each strip plate 42 has an arc-shaped groove 420 on its outer wall in the middle for the cable 9 to be laid. Each strip plate 42 is made of rubber. The rubber material prevents damage to the cable 9. The lower roller 3 at the end of the conveyor is connected to a drive mechanism 5 for rotating it. The drive mechanism 5 includes a gearbox 51 and a motor 52. The output end of the gearbox 51 is connected to the lower roller 3 at the end of the conveyor, and the input end of the gearbox 51 is connected to the output shaft of the motor 52. The gearbox 51 is fixedly connected to the main board 1. The connecting frame 6 is fixedly connected to the main board 1, and the base frame 7 can be raised and lowered in the upper part of the connecting frame 6. Multiple upper rollers 71 are evenly distributed along the length of the traction channel 20 on the base frame 7, and the multiple upper rollers 71 are located directly above the traction channel 20.

[0030] According to the diameter of the cable 9 to be pulled, the height of the base frame 7 on the connecting frame 6 is adjusted to change the gap between the upper roller 71 and the upper surface of the conveyor belt 4. This gap should be slightly smaller than the diameter of the cable 9 to ensure that when the cable 9 passes through, the upper roller 71 can generate sufficient contact pressure and clamping force on the cable 9 with the cooperation of the elastic belt 41, while avoiding damage to the cable 9. The drive mechanism 5 is started, driving the lower roller 3 connected to it to rotate. Since all the lower rollers 3 are linked through the conveyor belt 4, the entire conveyor belt 4 begins to circulate in the traction direction. The cable 9 from the previous process is fed into the traction channel 20 formed by the opening of the U-shaped plate 2. The cable 9 first enters the clamping area between the upper roller 71 and the conveyor belt 4. The strip plate 42 on the conveyor belt 4 increases the friction with the surface of the cable 9. The upper roller 71 presses down on the cable 9 under pressure, and the cable 9 is simultaneously subjected to the combined action of the moving conveyor belt 4 below and the rotating upper roller 71 above. The moving conveyor belt 4 provides forward traction primarily through the friction between the strip plates 42 on its surface and the cable 9. The driven rotation of multiple upper rollers 71 mainly serves to clamp and guide, preventing the cable 9 from slipping or jumping out of the traction channel 20, and evenly distributing the traction force across the circumference of the cable 9, ensuring its smooth and straight forward movement. The multiple upper rollers 71 and the entire conveyor belt 4 are distributed along the length of the traction channel 20, forming multiple continuous clamping and traction points. This design ensures that the cable 9 experiences uniform, continuous, and stable force throughout the traction process, effectively avoiding problems such as cable twisting, surface scratches, or sudden changes in traction force that can occur with single-point traction. The cable 9 is smoothly pulled through the entire device and transported to the next process.

[0031] like Figure 1 As shown, the base frame 7 includes two parallel horizontal plates 72, with multiple upper rollers 71 mounted on the two horizontal plates 72. The connecting frame 6 includes four vertical plates 61 and two pressing rods 62. The bottom ends of the four vertical plates 61 are fixed to the main plate 1, and the four vertical plates 61 are arranged in a matrix. Each vertical plate 61 has a strip-shaped through groove 610 at its top along its height direction, and two vertical plates 61 are respectively arranged on both sides of the traction channel 20. The two pressing rods 62 pass through both ends of the two horizontal plates 72, and each of the two pressing rods 62 has a threaded section (not shown) around its circumference through the two strip-shaped through grooves 610. The threaded section is screwed with a first nut 63. The two pressing rods 62 are arranged along the length of the traction channel 20. The strip-shaped through groove 610 at the top of each vertical plate 61 cooperates with the pressing rod 62 with the threaded section. By rotating the first nut 63 at both ends, the lifting and lowering of the entire base frame 7 can be controlled. The operator can adjust the nuts at both ends of the pressing rod 62 to fine-tune the level of the base frame 7, ensuring that the gap between all upper rollers 71 and the conveyor belt 4 below remains consistent along the direction of the cable 9. This allows for the adaptation of cables 9 of different diameters. Guide mechanisms 8 are provided at both the front and rear ends of the traction channel 20. Figure 2 , Figure 3 As shown, the guiding mechanism 8 includes a mounting plate 81 and two limiting rods 82. The mounting plate 81 is fixedly connected to one end of the U-shaped plate 2. The bottom ends of the two limiting rods 82 are fixed on the mounting plate 81. The distance between the two limiting rods 82 forms a guiding channel 83, which is at the same height as the traction channel 20. The channel formed by the two limiting rods 82 can forcibly guide the cable 9 to a position that is completely coaxial with the traction channel 20, achieving precise alignment. This avoids problems such as the cable 9 hitting the edge of the device due to inaccurate initial position or being scratched or tripped due to skewed entry, and achieves smooth and stable introduction and exit of the cable 9. Each mounting plate 81 has two transverse grooves 84 along the vertical direction of the traction channel 20. The two transverse grooves 84 correspond one-to-one with the two limiting rods 82. One end of each limiting rod 82 is coaxially connected to a threaded rod 85. The threaded rod 85 passes through the transverse groove 84 and is screwed with a second nut 86. Loosening the second nut 86 allows the limiting rod 82 to slide along the transverse groove 84, thereby changing the width of the guide channel 83. After adjusting to the appropriate position, tightening the second nut 86 secures it. This allows the traction channel 20 to accommodate a wide range of different cable diameters 9, greatly improving the equipment's versatility.

[0032] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A traction device for a power cable stranding machine, characterized in that The utility model relates to a kind of traction device, including: Mainboard, U-shaped plate is fixed on the mainboard, the open end of the U-shaped plate forms traction channel, and the U-shaped plate is arranged along its length direction and is evenly arranged with multiple lower rollers; Conveyer belt, the conveyer belt is sleeved on multiple lower rollers, and is located directly below the traction channel, the conveyer belt includes two elastic belts, multiple strip plates are evenly arranged on the two elastic belts, and the lower roller at the tail end of conveyer belt is connected with driving mechanism for driving rotation; Connecting frame, the connecting frame is fixedly connected with the mainboard, and the middle upper part is arranged with base frame, the base frame is arranged along the length direction of the traction channel and is evenly arranged with multiple upper rollers, and the multiple upper rollers are located directly above the traction channel.

2. A power cable stranding machine pulling device according to claim 1, characterized in that The driving mechanism includes gearbox and motor, the output end of the gearbox is drivingly connected with the lower roller at the tail end of conveyer belt, and the input end is drivingly connected with the output shaft of the motor, and the gearbox is fixedly connected with the mainboard.

3. A power cable stranding machine pulling device according to claim 1, characterized in that The base frame includes two horizontally arranged cross plates, and the multiple upper rollers are arranged on the two cross plates.

4. A power cable stranding machine pulling device according to claim 3, characterised in that The connecting frame includes four vertical plates and two pressing rods, the bottom end of the four vertical plates is fixedly arranged on the mainboard, and is arranged in matrix; The top end of each vertical plate is arranged with strip-shaped through slot along its height direction, and two vertical plates are arranged on both sides of the traction channel respectively; Two pressing rods pass through both ends of two cross plates, and two threaded sections are circumferentially arranged at both ends of two strip-shaped through slots, and the threaded sections are screwed with first nuts; Two pressing rods are arranged along the length direction of the traction channel.

5. The power cable stranding machine pulling device according to claim 1, characterized in that The front end and the tail end of the traction channel are provided with guide mechanism respectively; The guide mechanism includes mounting plate and two limiting rods, the horizontally arranged mounting plate is fixedly connected with one end of the U-shaped plate, the bottom end of the two limiting rods is fixedly arranged on the mounting plate, the spacing between the two limiting rods forms guide channel, and the guide channel is arranged at the same height with the traction channel.

6. A power cable stranding machine pulling device according to claim 5, characterised in that Two transverse slots are arranged on each mounting plate along the vertical direction of the traction channel, and the two transverse slots correspond to the two limiting rods respectively, one end of each limiting rod is coaxially connected with threaded rod, and the threaded rod passes through the transverse slot and is screwed with second nut.

7. The power cable stranding machine pulling device according to claim 1, characterized in that Arc-shaped grooves are arranged on the middle outer wall of each strip plate for cable arrangement.

8. The power cable stranding machine pulling device according to claim 1, characterized in that Each strip plate is made of rubber material.

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