A variable speed traction device for power cable laying

Abstract

The utility model discloses a kind of adjustable speed traction equipment of electric power cable laying, cable traction structure, it contains cable conveying assembly, auxiliary guide roller, control system and protective outer body, protective outer body is equipped with lifting sliding pipe in input-output window frame, there are guide roller adjusting rod, liquid extraction piston and return spring in it, auxiliary guide roller is slidably arranged in lifting groove, it is arranged pipe between protective outer body internal cable conveying assembly, hydraulic spring is pressed ball top rod in its vertical pipe, ball on top rod upper end is in rolling contact with cable, cable conveying assembly spacing is adjustable, pipe and lifting sliding pipe pipeline intercommunication;The equipment is reduced by ball top rod rolling support cable to the pressure of transmission belt and roller, reduce friction loss, facilitate cable conveying assembly quick speed regulation, while rotating guide roller adjusting rod can be adjusted auxiliary guide roller spacing and ball top rod support height synchronously.

Description

Technical Field

[0001] This utility model relates to the field of power cable laying technology, specifically an adjustable speed traction device for power cable laying. Background Technology

[0002] With the acceleration of global urbanization and the continuous rise in energy demand, the scale of power supply network construction is constantly expanding, placing higher demands on the efficiency and accuracy of power cable laying. Power cable laying traction equipment has emerged as a result. As a core piece of equipment in power engineering construction, it can efficiently and safely pull power cables of various specifications to designated locations with its strong traction force and stable operation performance. It plays a key role in urban power grid upgrades, cross-regional transmission line construction, and new energy supporting power grid projects, laying a solid foundation for the stable operation of the power system and the reliable transmission of energy.

[0003] In power cable laying operations, the enormous weight of the cable itself becomes a major challenge to equipment operation. When current traction equipment uses a conveyor belt to transport cables, the cable suspended in the conveyor section will exert additional pressure on the conveyor belt and conveyor rollers due to gravity. This significantly increases the contact stress between the two. During continuous operation of the equipment, the conveyor belt is subjected to frictional losses far exceeding the design expectations, accelerating its aging process and affecting the overall service life and operational stability of the equipment.

[0004] To address these issues, this invention provides an adjustable speed traction device for laying power cables. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an adjustable speed traction device for laying power cables, thus solving the aforementioned problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable speed traction device for laying power cables, comprising:

[0007] The cable traction structure includes a cable conveying assembly that provides power, an auxiliary guide roller for guiding the cable's direction, a control system for controlling the traction speed and tension, and a protective outer body supporting the overall structure. The protective outer body has lifting slide tubes integrally installed on the front and rear edges of the input and output windows of the cable conveying assembly. A guide roller adjusting rod is threadedly connected inside the lifting slide tube. One end of the guide roller adjusting rod extends to the lower part of the lifting slide tube, and a liquid-drawing piston is fixedly installed at its lower end. A return spring is sleeved on the rod body located inside the lifting slide tube. The lifting slide tube on the same side... A lifting groove of a specified length is opened upward from the upper end of the liquid-drawing piston on the opposite side of the pipe. An auxiliary guide roller is slidably arranged inside the lifting groove, and the rotation of the auxiliary guide roller is constrained inside the liquid-drawing piston. A row of pipes is fixedly arranged inside the protective outer body between the cable conveying components. A hydraulic spring is fixed at the bottom inside each vertical tube of the row of pipes, and the upper end of the hydraulic spring presses against the piston end of the ball ball push rod. The piston end of the ball ball push rod is slidably sealed inside the vertical tube of the row of pipes, and the upper end of the ball ball push rod extends out of the row of pipes and is equipped with a ball seat for rolling ball. The ball is always in rolling contact with the surface of the traction cable.

[0008] Preferably, the cable conveying assembly is slidably disposed inside the protective outer body, and the spacing between the cable conveying assemblies can be adjusted.

[0009] Preferably, the upper and lower ends of the return spring press against the upper end of the liquid-drawing piston and the upper part of the inside of the lifting slide tube, respectively.

[0010] Preferably, the auxiliary guide roller includes upper and lower guide rollers, wherein the upper auxiliary guide roller is rotatably connected to the liquid pumping piston, and the lower auxiliary guide roller is rotatably positioned below the lifting slide tube on the same side with the help of bolts, and the position of the lower auxiliary guide roller is adjusted according to the traction belt provided on the surface of the cable conveying assembly.

[0011] Preferably, the pipe arrangement consists of several vertical pipes arranged in a straight line, and the vertical pipes are fixedly connected to each other by horizontal pipes near the lower end, and an interface is provided in the middle of the side of the horizontal pipe.

[0012] Preferably, the interface on the side of the horizontal pipe of the pipeline is connected to the interface on the side of the lifting slide pipe.

[0013] Preferably, the interface on the side of the lifting slide tube is set to correspond to the liquid-drawing piston at the initial position. Beneficial effects

[0014] This utility model provides an adjustable speed traction device for laying power cables. Compared with the prior art, it has the following advantages:

[0015] (1) The adjustable speed traction equipment for laying power cables uses a ball bearing rod in the pipe to make the ball bearing always in rolling contact with the surface of the cable under the support of hydraulic spring and internal safety fluid. This rolling support reduces the direct pressure of the cable weight on the conveyor belt and conveyor roller, thereby reducing friction loss and facilitating the cable conveying components to make quick response adjustments to different speeds when traction the cable.

[0016] (2) The adjustable speed traction equipment for laying power cables drives the liquid pumping piston to move up and down in the lifting slide tube by rotating the guide roller adjustment rod, thereby driving the auxiliary guide roller to slide in the lifting groove, realizing the adjustment of the guiding distance between the auxiliary guide rollers. At the same time, the pipe and the lifting slide tube are connected by the pipeline. The movement of the liquid pumping piston causes the hydraulic oil in the pipe to flow. Under the synergistic effect of the hydraulic spring, the ball top rod can synchronously adjust the support height of the cable. Attached Figure Description

[0017] Figure 1 This is a perspective view of the external structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the overall structure of this utility model. Figure 1 ;

[0019] Figure 3 This is a cross-sectional view of the overall structure of this utility model. Figure 2 ;

[0020] Figure 4 This is the utility model Figure 3 Enlarged view of point A in the middle.

[0021] In the diagram: 1. Cable traction structure; 11. Protective outer body; 12. Cable conveying assembly; 13. Auxiliary guide roller; 14. Lifting slide tube; 141. Guide roller adjusting rod; 142. Liquid suction piston; 143. Lifting groove; 144. Return spring; 15. Pipeline; 151. Hydraulic spring; 152. Ball bearing push rod. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-4 An adjustable speed traction device for laying power cables, comprising:

[0024] The cable traction structure 1 includes a cable conveying assembly 12 that provides power, an auxiliary guide roller 13 for guiding the cable direction, a control system for controlling the traction speed and tension, and a protective outer body 11 that supports the overall structure. The cable conveying assembly 12 is slidably disposed inside the protective outer body 11, and the spacing between the cable conveying assemblies 12 is adjustable. The protective outer body 11 has open windows in the input and output directions of the cable being pulled by the cable conveying assembly 12. Lifting slide tubes 14 are integrally provided on the front and rear edges of the windows, and guide roller adjusting rods 141 are threadedly connected inside the lifting slide tubes 14. The guide roller adjusting rod 141 extends from one end inside the lifting slide tube 14 to the lower part of the lifting slide tube 14, and a liquid-drawing piston 142 is fixedly installed at the lower end. A return spring 144 is sleeved on the rod body inside the lifting slide tube 14 of the guide roller adjusting rod 141. The upper and lower ends of the return spring 144 press against the upper end of the liquid-drawing piston 142 and the upper part of the lifting slide tube 14, respectively. A lifting groove 143 of a specified length is opened from the upper end of the liquid-drawing piston 142 on the opposite side of the lifting slide tube 14. An auxiliary guide roller 13 is slidably installed inside the lifting groove 143. The rotation of the shaft is constrained inside the liquid-drawing piston 142. The auxiliary guide roller 13 includes upper and lower guide rollers. The upper auxiliary guide roller 13 is rotatably connected to the liquid-drawing piston 142, and the lower auxiliary guide roller 13 is rotatably positioned below the lifting slide tube 14 on the same side with bolts. The position of the lower auxiliary guide roller 13 is adjusted according to the traction belt provided on the surface of the cable conveying assembly 12. Inside the protective outer body 11, a pipe array 15 is fixedly installed between the cable conveying assemblies 12. The pipe array 15 consists of several vertically arranged straight pipes, and the vertical pipes are fixedly connected to each other through horizontal pipes near the lower end. The side of the horizontal pipes... An interface is provided in the middle position. The interface on the side of the horizontal tube of the pipe 15 is connected to the interface on the side of the lifting slide tube 14. The interface on the side of the lifting slide tube 14 is set to correspond to the liquid-drawing piston 142 in the initial position. A hydraulic spring 151 is fixed at the bottom inside each vertical tube of the pipe 15. The upper end of the hydraulic spring 151 presses against the piston end of the ball top rod 152. The piston end of the ball top rod 152 is slidably sealed inside the vertical tube of the pipe 15. The upper end of the ball top rod 152 extends out of the pipe 15 and is equipped with a ball bearing that rolls with the ball seat. The ball bearing is always in rolling contact with the surface of the traction cable.

[0025] During operation, the traction device is first bolted to a suitable position for laying the cable. The end of the power cable is manually pulled and guided by the auxiliary guide roller 13 into the cable conveying assembly 12. The cable conveying assembly 12 is then started, providing power for traction. The output auxiliary guide roller 13 guides the output. When the cable conveying assembly 12 is pulling, the weight of the cable causes the conveyor belt to be subjected to downward pressure. At this time, the upper end of the ball bearing rod 152 in the pipe 15 is in rolling contact with the surface of the cable under the support of the hydraulic spring 151 and the internal safety fluid. This rolling support reduces the direct pressure of the cable weight on the conveyor belt and conveyor roller, reduces friction loss, and facilitates cable conveying. The conveying component 12 quickly adjusts the traction speed. If the position of the auxiliary guide roller 13 is adjusted, the guide roller adjusting rod 141 is rotated. Since the guide roller adjusting rod 141 is threadedly connected to the lifting slide tube 14, when it is rotated, it drives the liquid pumping piston 142 to move up and down in the lifting slide tube 14, which drives the auxiliary guide roller 13 to slide in the lifting groove 143, thereby realizing the adjustment of the guide spacing of the auxiliary guide roller 13. At the same time, the side interface of the horizontal pipe of the pipe 15 is connected to the side interface of the pipe of the lifting slide tube 14 through the pipeline. The movement of the liquid pumping piston 142 causes the hydraulic oil in the pipe 15 to flow. Under the synergistic action of the hydraulic spring 151, the ball top rod 152 synchronously adjusts the cable support height.

[0026] In summary, the ball bearing push rod 152 inside the pipe 15, supported by the hydraulic spring 151 and the internal safety fluid, ensures that the balls are always in rolling contact with the cable surface. This rolling support reduces the direct pressure of the cable's weight on the conveyor belt and conveyor rollers, thereby reducing friction loss and facilitating rapid response adjustments of the cable conveying assembly 12 to different speeds during cable traction. By rotating the guide roller adjusting rod 141, the liquid-drawing piston 142 moves up and down within the lifting slide tube 14, thereby causing the auxiliary guide rollers 13 to slide within the lifting groove 143, thus adjusting the guide spacing between the auxiliary guide rollers 13. Simultaneously, the pipe 15 and the lifting slide tube 14 are connected by a pipeline. The movement of the liquid-drawing piston 142 causes hydraulic oil to flow within the pipe 15. With the synergistic effect of the hydraulic spring 151, the ball bearing push rod 152 synchronously adjusts the cable support height.

[0027] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0028] Working Principle: During operation, the traction device is first positioned at the appropriate location for cable laying using bolts. Then, the end of the power cable is manually pulled, guided by the auxiliary guide roller 13, and then transferred to the cable conveying assembly 12. The cable conveying assembly 12 is then activated, providing power for traction. The output is guided by the auxiliary guide roller 13. When the cable conveying assembly 12 pulls the cable, the cable's weight exerts a downward force on the conveyor belt. At this time, the ball bearing rod 152 inside the pipe 15, supported by the hydraulic spring 151 and internal safety fluid, ensures that its upper ball bearing remains in constant rolling contact with the cable surface. This rolling support reduces the direct pressure of the cable's weight on the conveyor belt and rollers, lowering friction loss and facilitating the cable conveying assembly 12. When rapidly adjusting the cable pulling speed, if it is necessary to adjust the position of the auxiliary guide roller 13, rotate the guide roller adjusting rod 141. Since the guide roller adjusting rod 141 is threadedly connected to the lifting slide tube 14, when it rotates, it drives the liquid pumping piston 142 to move up and down in the lifting slide tube 14, thereby driving the auxiliary guide roller 13 to slide in the lifting groove 143, thus realizing the adjustment of the guiding distance between the auxiliary guide rollers 13. At the same time, since the side interface of the horizontal pipe of the pipe 15 is connected to the side interface of the pipe of the lifting slide tube 14 through the pipeline, when the liquid pumping piston 142 moves, it causes the hydraulic oil in the pipe 15 to flow. Under the synergistic action of the hydraulic spring 151, the support height of the ball top rod 152 on the cable is adjusted synchronously (the larger the distance between the auxiliary guide rollers 13, the lower the support height of the ball top rod 152).

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable speed traction device for laying power cables, comprising: A cable traction structure (1) includes a cable conveying assembly (12) that provides power, an auxiliary guide roller (13) for guiding the cable's direction, a control system for controlling the traction speed and tension, and a protective outer body (11) that supports the overall structure. Its features include: The protective outer body (11) has a lifting slide tube (14) integrally provided on the front and rear frames of the input and output windows of the cable conveying assembly (12) for pulling the cable. The lifting slide tube (14) is internally threaded with a guide roller adjusting rod (141). One end of the guide roller adjusting rod (141) inside the lifting slide tube (14) extends to the lower part of the lifting slide tube (14), and a liquid-drawing piston (142) is fixedly provided at the lower end. A return spring (144) is sleeved on the rod body inside the lifting slide tube (14) of the guide roller adjusting rod (141). On the opposite side of the lifting slide tube (14) on the same side, a lifting groove (143) of a specified length is opened upward from the upper end of the liquid-drawing piston (142). An auxiliary guide roller (13) is slidably arranged inside the trough (143), and the rotation of the auxiliary guide roller (13) is constrained inside the liquid-drawing piston (142). A pipe (15) is fixedly arranged inside the protective outer body (11) between the cable conveying assembly (12). A hydraulic spring (151) is fixedly arranged below each vertical tube of the pipe (15), and the upper end of the hydraulic spring (151) presses against the piston end of the ball top rod (152). The piston end of the ball top rod (152) is slidably sealed inside the vertical tube of the pipe (15), and the upper end of the ball top rod (152) extends out of the pipe (15) and is equipped with a ball bearing that rolls with the ball seat. The ball bearing is always in rolling contact with the surface of the traction cable.

2. The adjustable speed traction device for laying power cables according to claim 1, characterized in that: The cable delivery assembly (12) is slidably disposed inside the protective outer body (11), and the spacing between the cable delivery assemblies (12) can be adjusted.

3. The adjustable speed traction device for laying power cables according to claim 1, characterized in that: The upper and lower ends of the return spring (144) press against the upper end of the pumping piston (142) and the upper part of the inside of the lifting slide tube (14), respectively.

4. The adjustable speed traction device for laying power cables according to claim 1, characterized in that: The auxiliary guide roller (13) includes two guide rollers, an upper and a lower one. The upper auxiliary guide roller (13) is rotatably connected to the liquid pumping piston (142), and the lower auxiliary guide roller (13) is rotatably positioned between the lifting slide tubes (14) on the same side with the bolt. The position of the lower auxiliary guide roller (13) is adjusted according to the traction belt set on the surface of the cable conveying assembly (12).

5. The adjustable speed traction device for laying power cables according to claim 1, characterized in that: The pipe (15) consists of several vertical pipes arranged in a straight line, and the vertical pipes are fixedly connected to each other by a horizontal pipe near the lower end, and an interface is provided in the middle of the side of the horizontal pipe.

6. The adjustable speed traction device for laying power cables according to claim 1, characterized in that: The interface on the side of the horizontal pipe of the pipe (15) is connected to the interface on the side of the lifting slide pipe (14).

7. The adjustable speed traction device for laying power cables according to claim 1, characterized in that: The interface on the side of the lifting slide tube (14) is set to correspond to the liquid pumping piston (142) at the initial position.

Images