Pay-off pulley structure for power construction stringing

Abstract

The invention relates to the technical field of pay-off pulleys, in particular to a pay-off pulley structure for stringing in power construction, which comprises two support frames, transverse frames are fixedly connected to two ends of the two support frames, the support frames and the transverse frames form a complete support seat, a fixed pulley is mounted at one end of each support frame, and a fixed pulley is mounted at the other end of each support frame. A movable pulley is slidably connected to the end, away from the fixed pulley, of the supporting frame, the cable is conveyed from the fixed pulley to the movable pulley, and a hook facilitating traction is installed at one end of the cable. The auxiliary conveying assembly pushes the movable pulley to be far away from the fixed pulley when the cable is intermittently pulled; the auxiliary conveying assembly comprises a sliding frame. The problems that when an existing defensive pulley is used for conveying a long-section thick cable, required traction force is large, the pulled end of the cable is prone to being pulled to deform, meanwhile, the requirement for power of traction equipment is high, and the cable laying cost is high are solved.

Description

Technical Field

[0001] The invention relates to the technical field of wire-laying pulleys, in particular to a wire-laying pulley structure for stringing wires in electric power construction. Background Art

[0002] In urban construction, electric energy needs to be transmitted through cables. Therefore, a large number of cables need to be laid. Since the diameter of cables is generally thicker and the weight is heavier, in the process of laying, in order to reduce the friction resistance of cable dragging, corresponding pay-off pulleys are usually used to support the cables, so that the friction force generated in the cable dragging process is mainly rolling friction, and the wear generated during cable dragging can also be reduced. After searching, the patent with application number CN202321688395.X discloses a pay-off pulley for cable laying, in which two first rollers and two second rollers support the cable on the same side, thereby increasing the supporting distance and avoiding excessive bending angle of the cable during dragging. The patent can be flexibly adjusted according to actual needs.

[0003] The above device reduces the degree of bending during cable transportation, but pulling a long section of thick cable still requires a large traction force. This part of the traction force acts entirely on one end of the cable, which can easily pull and deform the pulled end of the cable. It also requires a large external force for pulling the cable and a high power for the traction equipment, which increases the cost of cable traction. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a pay-out pulley structure for power construction line erection, which solves the problem that the existing pay-out pulley requires a large maximum traction force when transporting a long section of thick cable, which easily pulls and deforms the towed end of the cable, and at the same time has high power requirements for the traction equipment, resulting in high cable laying costs.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a wire-laying pulley structure for electric power construction wire erection, comprising two support frames, both ends of the two support frames are fixedly connected with transverse frames, the support frames and the transverse frames form a complete support seat, one end of the support frame is equipped with a fixed pulley, the end of the support frame away from the fixed pulley is slidably connected with a movable pulley, the cable is transported from the fixed pulley to the movable pulley, one end of the cable is equipped with a hook for convenient traction, and the top of the support frame is equipped with an auxiliary conveying component for driving the movable pulley close to the fixed pulley before intermittently traction of the cable, and pushing the movable pulley away from the fixed pulley when intermittently traction of the cable; The auxiliary conveying assembly includes a sliding frame slidably connected to the top of the support frame, a movable pulley is installed on the top of the sliding frame, a transverse driving assembly for pushing the sliding frame away from the fixed pulley is installed on the top of the transverse frame, an elastic force storage assembly fixed to the top of the support frame is provided between the fixed pulley and the movable pulley, an upper arc plate for increasing the bottom support area of ​​the cable is fixedly connected to the top of the sliding frame, and a lower arc plate is fixedly connected to the end of the upper arc plate away from the sliding frame.

[0006] Preferably, the lateral drive assembly includes a limit frame fixed between two horizontal frames, the inner bottom of the limit frame is slidably connected to a push plate, the top of one of the horizontal frames is fixedly connected to a motor, and the output end of the motor is provided with a threaded rod with one end movably passing through the push plate.

[0007] Preferably, the elastic force storage component includes an arc frame fixedly connected to the top of the support frame, an elastic arc plate with one end movably extending to the outside thereof is provided at the inner bottom of the arc frame, and a notch is provided on one side of the arc frame close to the movable pulley.

[0008] Preferably, a long groove is provided at the bottom of the support frame, and a notch with the same width as the distance between the two support frames is provided at the bottom of the slide frame.

[0009] Preferably, an arc plate is fixedly connected to the top of the lower arc plate near the fixed pulley, a transverse circular groove penetrating the arc plate and the lower arc plate is provided on the top of the arc plate, and a one-way limit assembly extending to the outside of the transverse circular groove is provided inside the transverse circular groove.

[0010] Preferably, the one-way limit assembly includes a rotating column rotatably connected to the inner wall of the transverse circular groove, the outer side of the rotating column includes an arcuate surface and a plane, an anti-skid column is fixedly connected to the plane, an anti-skid pad is installed at the connection between the arcuate surface and the plane, and a protrusion is fixedly connected to the side of the transverse circular groove close to the movable pulley, and the protrusion blocks the rotation of the anti-skid column and the rotating column.

[0011] Preferably, a half frame penetrating the upper arc plate is provided at the bottom of the upper arc plate away from the fixed pulley, a rotating rod is rotatably connected between the two sides of the inner wall of the half frame, and a plurality of cleaning brushes for cleaning the sides of the cable are fixedly connected to the outer side of the rotating rod.

[0012] Preferably, a plurality of fan blades are fixedly connected to the outer side of the rotating rod, and a side of the half frame away from the movable pulley is connected to an air intake frame with a gradually expanding opening.

[0013] Preferably, one side of the support frame is fixedly connected to a longitudinal frame, the top of the longitudinal frame is provided with a lifting frame that slides up and down along both sides thereof, and the fixed pulley is installed on the top of the lifting frame.

[0014] Preferably, a slider is slidably connected to the inner bottom of the longitudinal frame, an elastic plate is fixedly connected to one side of the slider, a support plate is fixedly connected between the two elastic plates, a longitudinal block is fixedly connected to the bottom of the support plate, a support block is fixedly connected to the bottom of the longitudinal block, an inclined plate is fixedly connected to one side of the elastic plate close to the support block, and an anti-sliding plate is fixedly connected to one end of the inclined plate close to the support block.

[0015] Compared with the prior art, the present invention provides a wire-laying pulley structure for electric power construction wiring, which has the following beneficial effects: 1. Through the auxiliary conveying components set up, the auxiliary conveying components on multiple groups of pulleys assist in pushing the cable for transportation from multiple points. Compared with only pulling the cable forward from one end of the cable, the cable at a single position is dispersed into the main traction force at one end and multiple auxiliary driving forces, which reduces the maximum traction force required for the cable when conveying a long section of thick cable, reduces the possibility of pulling and deforming the cable at one end being pulled, and at the same time reduces the power requirement for the traction equipment, thereby reducing the cost of cable laying.

[0016] 2. By setting up a lateral drive component and an elastic force storage component, the cable's own gravity can be used to squeeze the elastic force storage component to store force when it is concave. When the traction cable moves, the stored force and the lateral drive component are used to assist in pushing the cable to move. Not only can the multi-point auxiliary thrust be used to reduce the size of the traction force required at one end of the cable, but the auxiliary conveying component can also be used to push the concave cable to gradually level the area, thereby reducing the impact of the cable concave on the cable transportation. The concave process of the cable can also be effectively used to store force, thereby improving the effect of assisting in pushing the cable to move.

[0017] 3. By setting the upper arc plate and the lower arc plate, the area of ​​the cable supported at the movable pulley is increased, the stability of the cable supported by the movable pulley is improved, and the squeezing of the cable at the supported position is reduced, which reduces the possibility of deformation of the cable due to squeezing the pulley due to its own heavy weight. The lower arc plate makes the contact position between the cable and the pulley an arc structure, preventing the cable from being squeezed by sharp edges and causing rupture when it is concave.

[0018] 4. By setting up a one-way limit component, the friction between the cable and the cable can be reduced when the cable is pulled and moved, and the influence of the friction force on the cable when being pulled can be reduced. When the cable stops being pulled, the anti-slip column can be moved to the highest point to block the cable from continuing to move, preventing the cable from moving in the opposite direction when the pulling stops.

[0019] 5. The cleaning brush, the fan blade plate and the air intake frame with gradually expanding opening can clean the dust on the lower surface of the cable during cable transportation. At the same time, the airflow is used to blow away the dust on the surface of the cable. The structure is used to increase the flow speed of the airflow and enhance the cleaning effect of the dust on the cable surface.

[0020] 6. By setting up the support frame and support block, the area in contact with the ground can be reduced, thereby reducing the impact of ground protrusions. At the same time, the contact position of the support block with the ground can be flexibly adjusted, which improves the pulley's adaptability to uneven ground and can improve the pulley's stability when used on uneven ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the support frame and the auxiliary conveying assembly of the present invention; Figure 3 It is a structural schematic diagram of the movable pulley and the sliding frame of the present invention; Figure 4 It is a structural schematic diagram of the sliding frame of the present invention; Figure 5 It is a schematic diagram of the integral transmission cable of the present invention; Figure 6 It is a schematic diagram of the structure of the support frame and the lateral drive assembly of the present invention; Figure 7 It is a structural schematic diagram of the one-way limit assembly of the present invention; Figure 8 This is a schematic diagram of the structure of a half frame of the present invention; Fig. 9 It is a structural schematic diagram of the connection between the fixed pulley and the longitudinal frame of the present invention; Fig.10 It is a structural schematic diagram of the connection between the longitudinal frame and the support plate of the present invention; Fig.11 It is a schematic diagram of the structure of the support plate and the support block of the present invention.

[0022] In the figure: 1, support frame; 2, horizontal frame; 3, fixed pulley; 4, movable pulley; 5, auxiliary conveying assembly; 51, sliding frame; 52, horizontal driving assembly; 521, limit frame; 522, push plate; 523, motor; 524, threaded rod; 53, elastic force storage assembly; 531, arc frame; 532, elastic arc plate; 54, upper arc plate; 55, lower arc plate; 6, arc plate; 7, one-way limit assembly ; 71. Rotating column; 711. Arc surface; 712. Flat surface; 72. Anti-skid column; 73. Anti-skid pad; 8. Half frame; 9. Rotating rod; 10. Cleaning brush; 11. Fan blade plate; 12. Inlet frame; 13. Longitudinal frame; 14. Lifting frame; 15. Sliding block; 16. Elastic plate; 17. Support plate; 18. Longitudinal block; 19. Support block; 20. Inclined plate; 21. Anti-sliding block; 22. Bump. DETAILED DESCRIPTION

[0023] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0024] Embodiment 1 Since the weight of the thicker diameter cable is very large, there are two problems when laying the cable. One is that the cable is easy to sag between the two supporting points when it is transported over a long distance, and the other is that the required traction force is large. Based on these two points, other problems will arise. In order to solve these two problems, refer to Figure 1-Figure 6 As one embodiment of the present invention, a wire-laying pulley structure for power construction wiring is proposed, which adopts a method of assisting the cable transportation at multiple positions to cope with the problem that a large traction force is required to pull the cable at a single position, and adopts a method of moving the conveying pulley during the conveying process to cope with the problem that the fixed pulley causes the cable to be greatly concave between the two pulleys. The structure comprises two support frames 1, both ends of the two support frames 1 are fixedly connected with a transverse frame 2, the support frame 1 and the transverse frame 2 form a complete support seat, one end of the support frame 1 is equipped with a fixed pulley 3, and the support One end of the frame 1 away from the fixed pulley 3 is slidably connected to a movable pulley 4, and the top of the support frame 1 is equipped with an auxiliary conveying component 5 for driving the movable pulley 4 close to the fixed pulley 3 before the intermittent cable pulling, and pushing the movable pulley 4 away from the fixed pulley 3 when the cable is intermittently pulled. When in use, the fixed pulley 3 and the movable pulley 4 installed on the same support frame 1 form a group of pulleys, the cable passes over the fixed pulley 3, then moves to the movable pulley 4, and passes over the movable pulley 4, continues to pull the cable, and a group of fixed pulleys 3 and movable pulleys 4 are placed at a certain distance on the cable conveying path.

[0025] In this way, there is a situation that when the cable is transported, the distance between the support points of the same group of fixed pulleys 3 and movable pulleys 4 is short, recorded as area A, and the distance between the support points of the cable between the movable pulley 4 and the next group of fixed pulleys 3 is long, recorded as area B. The degree of concavity of the cable in area A is small, and the degree of concavity of the cable in area B is large. On this basis, the auxiliary conveying component 5 assists in pushing the cable forward from each group of fixed pulleys 3 and movable pulleys 4, and assists the power of the front-end traction cable to move forward from multiple points, so as to achieve the purpose of multi-point auxiliary promotion of cable transportation. The specific process is as follows: The front-end traction force intermittently pulls the cable forward, refer to Figure 5When the cable is pulled to the left, the auxiliary conveying component 5 is also started, pushing the movable pulley 4 to move to the left, and the driven pulley 4 also generates a leftward thrust on the cable. The auxiliary conveying components 5 on the multiple pulley groups assist in pushing the cable for conveying from multiple points. Compared with only pulling the cable forward from one end of the cable, the cable at a single position is dispersed into the main traction force at one end and auxiliary thrusts at multiple locations, which reduces the maximum traction force required for the cable when conveying a long section of thick cable, reduces the possibility of the cable being pulled and deformed at one end, and reduces the power requirement for the traction equipment, thereby reducing the cost of cable laying; when the cable stops being pulled to the left, the auxiliary conveying component 5 also stops pushing the movable pulley 4 to the left, and then the movable pulley 4 moves to the left to the starting point under the gravity of the cable between the two pulley groups and the force of the auxiliary conveying component 5, and the above process is repeated to complete the process of intermittently conveying the cable to the left.

[0026] In order to assist in pushing the cable leftward when the traction cable moves leftward, the present embodiment provides an auxiliary conveying assembly 5, referring to Figure 2 The auxiliary conveying assembly 5 includes a sliding frame 51 slidably connected to the top of the support frame 1, the movable pulley 4 is installed on the top of the sliding frame 51, and a transverse driving assembly 52 for pushing the sliding frame 51 away from the fixed pulley 3 is installed on the top of the transverse frame 2. An elastic force storage assembly 53 fixed to the top of the support frame 1 is provided between the fixed pulley 3 and the movable pulley 4. An upper arc plate 54 for increasing the bottom support area of ​​the cable is fixedly connected to the top of the sliding frame 51, and a lower arc plate 55 is fixedly connected to the end of the upper arc plate 54 away from the sliding frame 51. When in use, the movable pulley 4 starts at the position closest to the fixed pulley 3, and squeezes and deforms the elastic force storage assembly 53. When the cable starts to be pulled to move to the left, the transverse driving assembly 52 is also started to push the cable to the left, and the auxiliary cable moves to the left. At the same time, the elasticity of the elastic force storage assembly 53 itself also pushes the cable to move to the left.

[0027] When the cable is stopped from being pulled to the left, the transverse drive component 52 is controlled to move to the starting point. The cable between the two groups of pulleys begins to concave due to its own large gravity. The concave process pushes the lower arc plate 55 and the slide frame 51 to move to the right, and pushes the movable pulley 4 to move to the right to the starting point, and the elastic force storage component 53 is squeezed and bent again to store force. The above process is repeated to complete the intermittent leftward transmission of the cable. The cable's own gravity can be used to squeeze the elastic force storage component 53 to store force when it is concave. When the traction cable moves, the stored force and the transverse drive component 52 are used to assist in pushing the cable to move. Not only can the auxiliary thrust of multiple points be used to reduce the size of the traction force required at one end of the cable, but the auxiliary conveying component 5 can also be used to push the concave cable to gradually level the area, thereby reducing the influence of the cable concave on the cable transportation, and effectively utilizing the cable concave process to store force, thereby improving the effect of assisting in pushing the cable to move.

[0028] The key point of this process is to control the synchronous start and stop of the transverse drive components 52 at multiple groups of pulleys and the traction force at one end of the cable. This requires adjusting the frequency of the traction force at one end of the cable to be consistent with the frequency of the transverse drive component 52, and then synchronously starting all or part of the transverse drive components 52 at the pulleys when the traction force is started, and then gradually starting the remaining unstarted transverse drive components 52 when the subsequent traction force is started again, and finally making all the transverse drive components 52 work synchronously with the traction force. Otherwise, the transverse drive component 52 is not synchronized with the traction force and the elastic force storage component 53, which will result in a time period when only the transverse drive component 52 pushes the cable to the left, and there is also a time period when only the traction force and the elastic force storage component 53 transport the cable to the left, which will result in the transverse drive component 52 being unable to push the cable to move, and the elastic force storage component 53 assisting in pushing the cable to move. The effect is poor, and ultimately the result desired by this embodiment cannot be achieved.

[0029] The top of the upper arc plate 54 contacts the cable, and cooperates with the movable pulley 4 to support the cable from the bottom of the cable, thereby increasing the area of ​​the movable pulley 4 supporting the cable, improving the stability of the movable pulley 4 supporting the cable, and reducing the squeezing of the cable at the supported position, thereby reducing the possibility of deformation of the cable due to squeezing the pulley due to its own heavy weight. The lower arc plate 55 makes the contact position between the cable and the pulley an arc structure, thereby preventing the cable from being squeezed by sharp edges and causing rupture when it is concave.

[0030] In order to achieve the purpose of pushing the cable to move to the left and not restricting the position of the movable pulley 4 after the traction force stops, the present embodiment is provided with a transverse drive assembly 52. Figure 6 The lateral drive assembly 52 includes a limit frame 521 fixed between the two lateral frames 2, and a push plate 522 is slidably connected to the inner bottom of the limit frame 521. A motor 523 is fixedly connected to the top of one of the lateral frames 2. A threaded rod 524 with one end movably penetrating the push plate 522 is provided at the output end of the motor 523. When in use, when the traction force pulls the cable to move, the motor 523 is started, driving the threaded rod 524 to rotate, thereby driving the push plate 522 to move along the limit frame 521 in the direction of the cable, thereby assisting in pushing the cable forward; when the traction force stops pulling the cable to move, the motor 523 rotates in the opposite direction, driving the push plate 522 to move away from the sliding frame 51 and gradually move to the starting point, and the position between the two sets of pulleys, that is, the cable in the B area, will gradually concave due to its long length and heavy weight. The concave cable pushes the movable pulley 4 to move toward the fixed pulley 3 until the movable pulley 4 moves to the starting point, completing a complete action of the lateral drive assembly 52 pushing the cable to move to the left, and then repeating this action to continuously assist in pushing the cable to move.

[0031] In order to improve the effect of assisting the cable to move, in this embodiment, on the basis of the lateral driving component 52 pushing the cable, an elastic force storage component 53 is further added. The elastic force storage component 53 includes an arc frame 531 fixedly connected to the top of the support frame 1, and an elastic arc plate 532 with one end movably extending to the outside thereof is provided at the inner bottom of the arc frame 531. A notch is provided on one side of the arc frame 531 close to the movable pulley 4. When in use, refer to Figure 2 When the cable stops pulling and moves to the left, the cable in area B is concave to a greater extent due to its long distance and heavy weight. When it is concave, it pushes the movable pulley 4 and the sliding frame 51 to move toward the fixed pulley 3, driving the upper arc plate 54 to move to the right. The upper arc plate 54 squeezes and bends the elastic arc plate 532. After the elastic arc plate 532 is bent, a part of it extends from the notch of the arc frame 531 to the outside of the arc frame 531 until the traction force pulls the cable to the left again. The moving cable and the lateral drive assembly 52 both move the movable pulley 4 to the left, so that the upper arc plate 54 no longer squeezes the elastic arc plate 532. The elastic force generated by the bending of the elastic arc plate 532 assists in pushing the cable to the left. The gravity of the concave part when the cable stops pulling is used to squeeze the elastic arc plate 532 for storing force. When the cable is pulled to move, the stored force is used to assist in pushing the cable to move, thereby improving the effect of assisting in pushing the cable.

[0032] Embodiment 2 Reference Figure 1-Figure 7 On the basis of the first embodiment, the top of the lower arc plate 55 near the fixed pulley 3 is fixedly connected with an arc plate 6, and a transverse circular groove penetrating the arc plate 6 and the lower arc plate 55 is opened on the top of the arc plate 6. The interior of the transverse circular groove is provided with a one-way limit assembly 7 extending to the outside thereof, and the one-way limit assembly 7 includes a rotating column 71 rotatably connected to the inner wall of the transverse circular groove, and the outer side of the rotating column 71 includes an arc surface 711 and a plane 712, and an anti-skid column 72 is fixedly connected to the plane 712. An anti-skid pad 73 is installed at the connection between the arc surface 711 and the plane 712, and a protrusion 22 is fixedly connected to the side of the transverse circular groove near the movable pulley 4, and the protrusion 22 blocks the anti-skid column 72 and the rotating column 71 from rotating. When in use, refer to Figure 3 and Figure 7 , it can be divided into two different working states: the cable is pulled to the left and the cable stops being pulled to the left, as follows: When the cable is pulled to the left, the cable pushes the anti-skid column 72 and the anti-skid pad 73 on the plane 712, driving the rotating column 71 to rotate counterclockwise until the anti-skid column 72 moves to the protrusion 22 and is blocked. At this time, the arc surface 711 is under the cable and contacts the cable. When the cable moves, it contacts the smooth arc surface 711, and the friction degree is small, which can reduce the influence of the friction force on the cable when it is pulled; when the cable stops being pulled, the cable in the B area is sunken downward, pushing the slide frame 51 and the movable pulley 4 to move to the right. The sunken cable has the power to pull the cable to the right, so that the cable moves to the right in the opposite direction, dragging the rotating column 71 to rotate clockwise until the plane 712 When rotated to the highest position, the anti-skid pad 73 allows the flat surface 712 and the curved surface 711 to be driven to rotate when they come into contact with the cable, thereby preventing the situation where the connection between the flat surface 712 and the curved surface 711 is smooth and cannot be driven to rotate by the moving cable. The anti-skid column 72 has the function of blocking the movement of the cable. The pulling force generated by the depression due to the cable's own gravity is much smaller than the pulling force when the cable is pulled to the left. Therefore, the friction between the cable and the cable can be reduced when the cable is pulled and moved, thereby reducing the influence of the friction force on the cable when it is pulled. When the cable stops pulling, the anti-skid column 72 is moved to the highest position to block the cable from continuing to move, thereby preventing the cable from moving in the opposite direction when the pulling stops.

[0033] Embodiment 3 In order to reduce the dust on the surface of the cable when laying out, refer to Figure 1-Figure 8 On the basis of the first embodiment, the present embodiment is provided with a structure for cleaning the surface of the cable. A half frame 8 penetrating the upper arc plate 54 is provided at the bottom of the upper arc plate 54 away from the fixed pulley 3. A rotating rod 9 is rotatably connected between the inner walls of the half frame 8 on both sides. A plurality of cleaning brushes 10 for cleaning the sides of the cable are fixedly connected to the outer side of the rotating rod 9. A plurality of fan blades 11 are fixedly connected to the outer side of the rotating rod 9. An air intake frame 12 with a gradually expanding opening is connected to the side of the half frame 8 away from the movable pulley 4. When in use, the cable contacts the cleaning brush 10 when it moves, and the friction force drives the cleaning brush 10 to move, thereby pushing the rotating rod 9 and the fan blade 11 to rotate, and the cleaning brush 10 and the cable are in contact with each other. There is a relative displacement on the lower surface of the cable, and the dust on the lower surface of the cable is cleaned. At the same time, the rotating fan blade 11 blows the air inside the half frame 8 to the surface of the cable, and the air outside the half frame 8 enters the half frame 8 through the air intake frame 12 due to the pressure difference. Since the opening of the air intake frame 12 is large and the connection with the half frame 8 is small, the channel with a gradually decreasing cross-section gradually increases the circulating air speed, thereby increasing the flow speed of the air driven by the fan blade 11, and can clean the dust on the lower surface of the cable when the cable is transported. At the same time, the airflow is used to blow away the dust on the surface of the cable, and the structure is used to increase the flow speed of the airflow, thereby enhancing the cleaning effect of the dust on the cable surface.

[0034] Embodiment 4 The cable laying environment is complex. Sometimes the ground is uneven. The presence of protrusions will affect the flatness of the bottom of the support frame 1, causing the fixed pulley 3 and the movable pulley 4 on the support frame 1 to be unstable. In order to make the pulleys adapt to the uneven road surface, refer to Figure 1-Figure 11 On the basis of the first embodiment, a structure for increasing the stability of the pulley on an uneven road surface is proposed, a long groove is provided at the bottom of the support frame 1, a notch with the same width as the distance between the two support frames 1 is provided at the bottom of the slide frame 51, a longitudinal frame 13 is fixedly connected to one side of the support frame 1, a lifting frame 14 is provided on the top of the longitudinal frame 13 for sliding up and down along both sides thereof, the fixed pulley 3 is installed on the top of the lifting frame 14, a slider 15 is slidably connected to the inner bottom of the longitudinal frame 13, an elastic plate 16 is fixedly connected to one side of the slider 15, a support plate 17 is fixedly connected between the two elastic plates 16, a longitudinal block 18 is fixedly connected to the bottom of the support plate 17, a support block 19 is fixedly connected to the bottom of the longitudinal block 18, an inclined plate 20 is fixedly connected to the side of the elastic plate 16 close to the support block 19, and an anti-sliding block 21 is fixedly connected to the end of the inclined plate 20 close to the support block 19.

[0035] When in use, there are two different working states: placing the pulley before the cable is transported and during the cable transport. The details are as follows: When placing the pulleys, first place the two support frames 1 on the ground. At this time, the fixed pulley 3 is not squeezed from top to bottom by the cable. The elastic plate 16 pushes the support plate 17 to the highest position, and then pushes the lifting frame 14 and the fixed pulley 3 to the highest position. When the support plate 17 is raised, it drives the longitudinal block 18 and the support block 19 to rise, so that the support block 19 does not contact the ground. Then move the slider 15 along the longitudinal frame 13 to drive the support block 19 to move to both sides of the raised position on the ground. There is a large gap between the two support frames 1, so that the two support frames 1 can be placed on both sides of the raised position on the ground. Since a long groove is opened at the bottom of the support frame 1, only the two ends of the support frame 1 are in contact with the ground, so that the protrusion on the ground can extend into the long groove without affecting the stability of the support frame 1; when the cable passes through the fixed pulley 3, the weight of the cable The fixed pulley 3 is squeezed and dropped to the lowest point, pushing the support plate 17 and the support block 19 down until the support block 19 contacts the ground. Since the support block 19 is pre-moved to the two sides of the raised position on the ground, it can contact with a relatively flat position on the ground to increase the firmness of the contact between the support frame 1 and the ground. When the support plate 17 descends, the elastic plate 16 is squeezed and bent to push the inclined plate 20 and the anti-sliding block 21 down. The anti-sliding block 21 squeezes the two ends of the support block 19 and cooperates with the longitudinal block 18 to squeeze the support block 19 on the ground from multiple positions of the support block 19, which can reduce the area in contact with the ground, thereby reducing the impact of the ground protrusion. At the same time, the position where the support block 19 contacts the ground can be flexibly adjusted, which improves the adaptability of the pulley to uneven ground and can improve the stability of the pulley when used on uneven ground.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wire-laying pulley structure for electric power construction, comprising two support frames (1), both ends of the two support frames (1) being fixedly connected to a transverse frame (2), the support frames (1) and the transverse frame (2) forming a complete support seat, characterized in that: A fixed pulley (3) is installed at one end of the support frame (1), and a movable pulley (4) is slidably connected to the end of the support frame (1) away from the fixed pulley (3). An auxiliary conveying component (5) is installed on the top of the support frame (1) for driving the movable pulley (4) close to the fixed pulley (3) before the intermittent cable pulling and for pushing the movable pulley (4) away from the fixed pulley (3) when the cable is intermittently pulled; The auxiliary conveying assembly (5) comprises a sliding frame (51) slidably connected to the top of the support frame (1), a movable pulley (4) is mounted on the top of the sliding frame (51), a transverse driving assembly (52) for pushing the sliding frame (51) away from the fixed pulley (3) is mounted on the top of the transverse frame (2), an elastic force storage assembly (53) fixed to the top of the support frame (1) is provided between the fixed pulley (3) and the movable pulley (4), an upper arc plate (54) for increasing the bottom support area of ​​the cable is fixedly connected to the top of the sliding frame (51), and a lower arc plate (55) is fixedly connected to one end of the upper arc plate (54) away from the sliding frame (51).

2. The pay-off pulley structure according to claim 1, characterized in that: The transverse drive assembly (52) comprises a limit frame (521) fixed between two transverse frames (2), a push plate (522) being slidably connected to the inner bottom of the limit frame (521), a motor (523) being fixedly connected to the top of one of the transverse frames (2), and a threaded rod (524) having one end movably penetrating the push plate (522) being provided at the output end of the motor (523).

3. The pay-off pulley structure according to claim 1, characterized in that: The elastic force storage component (53) comprises an arc frame (531) fixedly connected to the top of the support frame (1), an elastic arc plate (532) having one end movably extending to the outside thereof is provided at the inner bottom of the arc frame (531), and a notch is provided on one side of the arc frame (531) close to the movable pulley (4).

4. The pay-off pulley structure according to claim 1, characterized in that: The bottom of the support frame (1) is provided with a long groove, and the bottom of the sliding frame (51) is provided with a notch having a width equal to the distance between the two support frames (1).

5. The pay-off pulley structure according to claim 1, characterized in that: The top of the lower arc plate (55) close to the fixed pulley (3) is fixedly connected to an arc plate (6), the top of the arc plate (6) is provided with a transverse circular groove penetrating the arc plate (6) and the lower arc plate (55), and the interior of the transverse circular groove is provided with a one-way limit assembly (7) extending to the outside thereof.

6. The pay-off pulley structure according to claim 5, characterized in that: The one-way limiting assembly (7) comprises a rotating column (71) rotatably connected to the inner wall of the transverse circular groove, the outer side of the rotating column (71) comprises an arcuate surface (711) and a plane (712), an anti-skid column (72) is fixedly connected to the plane (712), an anti-skid pad (73) is installed at the connection between the arcuate surface (711) and the plane (712), and a protrusion (22) is fixedly connected to the side of the transverse circular groove close to the movable pulley (4).

7. The pay-off pulley structure according to claim 1, characterized in that: A half frame (8) penetrating the upper arc plate (54) is provided at the bottom of the upper arc plate (54) away from the fixed pulley (3); a rotating rod (9) is rotatably connected between the two sides of the inner wall of the half frame (8); and a plurality of cleaning brushes (10) for cleaning the side surfaces of the cable are fixedly connected to the outer side of the rotating rod (9).

8. The pay-off pulley structure according to claim 7, characterized in that: A plurality of fan blades (11) are fixedly connected to the outer side of the rotating rod (9), and a side of the half frame (8) away from the movable pulley (4) is connected to an air intake frame (12) with a gradually expanding opening.

9. The pay-off pulley structure according to claim 1, characterized in that: A longitudinal frame (13) is fixedly connected to one side of the support frame (1), a lifting frame (14) is provided on the top of the longitudinal frame (13) and slides up and down along both sides thereof, and a fixed pulley (3) is installed on the top of the lifting frame (14).

10. The pay-off pulley structure according to claim 9, characterized in that: A slider (15) is slidably connected to the inner bottom of the longitudinal frame (13); an elastic plate (16) is fixedly connected to one side of the slider (15); a support plate (17) is fixedly connected between the two elastic plates (16); a longitudinal block (18) is fixedly connected to the bottom of the support plate (17); a support block (19) is fixedly connected to the bottom of the longitudinal block (18); an inclined plate (20) is fixedly connected to one side of the elastic plate (16) close to the support block (19); and an anti-sliding block (21) is fixedly connected to one end of the inclined plate (20) close to the support block (19).

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