A power cable laying vehicle

Abstract

The present invention belongs to the technical field of power cables, and discloses a power cable pay-off vehicle, comprising a supporting mechanism and a retracting mechanism, wherein the supporting mechanism comprises two coaxial and spaced support disks, each of the support disks is provided with a plurality of supporting blocks, the support blocks can adjust positions along the radial direction of the support disks, and the support blocks on the two support disks can support power cable rollers; the retracting mechanism is connected to the two support disks, and the retracting mechanism can adjust the axial spacing between the two support disks. The supporting mechanism and the retracting mechanism enable the power cable pay-off vehicle to adapt to rollers of different diameters and lengths, and the adjustment is convenient and the adaptability is strong, thereby solving the problem that a single type of pay-off vehicle is difficult to adapt to rollers of different sizes, saving construction costs and improving construction efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of power cables, and in particular to a power cable pay-off vehicle. Background Art

[0002] As a line for the transmission and distribution of electric energy, power cables are widely used in large projects such as urban underground power grids, power station lead-out lines, internal power supply for industrial and mining enterprises, and underwater transmission lines across rivers and seas. With the development of society and the widespread application of electricity, power lines are spread all over the city, and the laid power lines are getting longer and longer. In the power lines, the proportion of cables is getting larger and larger. The laying of power cables is generally carried out by using power cable pay-off vehicles.

[0003] The existing power cable pay-off vehicles have different models. Usually, a single model cannot meet the needs of wire rollers of different diameters or lengths. In the face of wire rollers of different sizes, it is necessary to purchase power cable pay-off vehicles of different sizes to complete the cable laying work, which increases construction costs and slows down construction efficiency. Summary of the invention

[0004] The object of the present invention is to provide a power cable pay-off vehicle to solve the technical problem that the existing power cable pay-off vehicle cannot adjust the size and cannot adapt to wire rollers of different sizes and specifications.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] The present invention provides a power cable pay-off vehicle, comprising:

[0007] The support mechanism comprises two coaxial support plates arranged at intervals, each of the support plates being provided with a plurality of support blocks, the support blocks being capable of adjusting positions along the radial direction of the support plates, and the support blocks on the two support plates being capable of supporting the power cable rollers;

[0008] A retracting mechanism is connected to the two support disks, and the retracting mechanism can adjust the axial distance between the two support disks.

[0009] Preferably, two movable grooves are provided on the surface of the support plate, and the two movable grooves are cross-distributed along the radial direction of the support plate. Four support blocks are provided, and the four support blocks are evenly spaced around the axis of the support plate and are located in the movable grooves.

[0010] Preferably, the two movable grooves are respectively the first movable groove and the second movable groove, two first transmission rods are arranged in the first movable groove, and a second transmission rod is arranged in the second movable groove, one end of the first transmission rod is meshed with the middle part of the second transmission rod through a bevel gear, and the two first transmission rods are symmetrically distributed on both sides of the second transmission rod.

[0011] Preferably, one of the support blocks is threadedly connected to each of the first transmission rods, and two of the support blocks are threadedly connected to the second transmission rods.

[0012] Preferably, the supporting mechanism further comprises a first driving device, and the first driving device is capable of driving one of the first transmission rods to rotate, or the first driving device is capable of driving the second transmission rod to rotate.

[0013] Preferably, the retracting mechanism comprises:

[0014] A linkage assembly, comprising a sleeve and a push plate, wherein the push plate is provided with a mounting hole, the sleeve and the mounting hole are connected via a bearing, the sleeve is fixedly connected to the support plate, and the center line of the sleeve coincides with the axis of the support plate;

[0015] A retracting assembly is provided corresponding to each of the supporting plates, and the retracting assembly is connected to the push plate. The retracting assembly can drive the push plate to move linearly along the axis of the supporting plate.

[0016] Preferably, the retraction assembly comprises a guide tube and a third transmission rod, the third transmission rod is rotatably connected to the guide tube, and the push plate is threadedly connected to the third transmission rod.

[0017] Preferably, the retracting mechanism further comprises a first connecting rod and a second driving device, the two third transmission rods are respectively transmission-connected to both ends of the first connecting rod, and the second driving device can drive the first connecting rod to rotate.

[0018] Preferably, it also includes a reading mechanism, which includes a visual box, a fourth transmission rod and a pointer, the fourth transmission rod is arranged inside the visual box, the fourth transmission rod is connected to the third transmission rod, the pointer is threadedly connected to the fourth transmission rod, the surface of the visual box is provided with a scale, and the pointer can indicate the scale.

[0019] Preferably, the power cable pay-off vehicle further comprises a rotating mechanism, and the rotating mechanism comprises:

[0020] A rotating shaft connected to the sleeve key, the inner wall of the sleeve is provided with a plurality of key slots along the axial direction, the rotating shaft can rotate around the axis of the supporting disk, and the rotating shaft can slide along the key slots;

[0021] A second connecting rod and a third driving device, wherein the rotating shaft is connected to the second connecting rod, and the third driving device can drive the second connecting rod to rotate;

[0022] A rotation-stopping assembly is sleeved on the rotating shaft.

[0023] Beneficial effect: The present invention provides an electric cable pay-off vehicle, comprising a supporting mechanism and a retracting mechanism. The supporting mechanism comprises two coaxial and spaced-apart supporting disks, each of which is provided with a plurality of supporting blocks, which can provide multi-point support for the wire roller, and the support is firm and stable. The supporting blocks can adjust their positions along the radial direction of the supporting disks, so that the supporting blocks on the two supporting disks can support electric cable wire rollers of different diameters. The retracting mechanism is linked to the supporting disk, and the retracting mechanism can adjust the axial spacing between the two supporting disks, so that the supporting mechanism can support wire rollers of different lengths. The adjustment is convenient and the adaptability is strong, which solves the problem that a single type of cable pay-off vehicle is difficult to adapt to wire rollers of different sizes, saves construction costs, and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a cross-sectional view of a power cable pay-off vehicle provided in Embodiment 1 of the present invention;

[0025] Figure 2 is a cross-sectional view of a retracting mechanism provided in Embodiment 1 of the present invention;

[0026] Figure 3 is a cross-sectional view of the support mechanism provided in the first embodiment of the present invention Figure 1 ;

[0027] Figure 4 is a cross-sectional view of the support mechanism provided in the first embodiment of the present invention Figure 2 ;

[0028] Figure 5 is a cross-sectional view of a rotating mechanism provided in Embodiment 1 of the present invention;

[0029] Figure 6 yes Figure 1 The enlarged view of point A in the middle;

[0030] Figure 7 is a cross-sectional view of a power cable pay-off vehicle provided in Embodiment 2 of the present invention;

[0031] Figure 8 yes Figure 7 The enlarged view of point B in the middle;

[0032] Fig. 9 It is a front view of the viewing box provided in the second embodiment of the present invention.

[0033] In the figure:

[0034] 1-support mechanism; 11-support block; 12-support plate; 121-first moving groove; 122-second moving groove; 123-first transmission rod; 124-second transmission rod; 125-first driving device;

[0035] 2-retracting mechanism; 21-linkage assembly; 211-push plate; 2111-bearing; 212-sleeve; 2121-keyway; 22-retracting assembly; 221-guide tube; 222-third transmission rod; 23-first connecting rod; 24-second driving device;

[0036] 3-rotation mechanism; 31-rotation shaft; 32-second connecting rod; 33-third driving device; 34-rotation stop assembly; 341-fixed sleeve; 342-friction block; 343-hydraulic cylinder;

[0037] 4- rack;

[0038] 5-reading mechanism; 51-visual box; 511-visual board; 52-fourth transmission rod; 53-pointer. DETAILED DESCRIPTION

[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0043] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0044] Embodiment 1

[0045] See also Figure 1 , this embodiment provides a power cable pay-off vehicle, including a frame 4 and a support mechanism 1, a retracting mechanism 2, and a rotating mechanism 3 connected to the frame 4. The support mechanism 1 includes two coaxial and spaced support discs 12, and the two support discs 12 jointly support the wire roller; the retracting mechanism 2 is used to adjust the spacing between the two support discs 12 to support wire rollers of different lengths; the rotating mechanism 3 is used to drive the support disc 12 to rotate around the axis to drive the wire roller to rotate, and complete the wire winding and pay-off; the frame 4 is used to carry the support mechanism 1, the retracting mechanism 2 and the rotating mechanism 3, and has a certain protection function for each mechanism to prevent dust from entering and extend the mechanical life; the frame 4 includes a plurality of moving wheels, and the moving wheels are arranged at the bottom of the frame 4, so that the power cable pay-off vehicle can be easily moved by manpower. The power cable pay-off vehicle can realize the loading of wire rollers of different sizes, saving construction costs and improving construction efficiency.

[0046] A plurality of support blocks 11 are arranged on each support disk 12. The support blocks 11 on the two support disks 12 can support the power cable rollers. The support blocks 11 can adjust their positions along the radial direction of the support disk 12 to change the spacing between the support blocks 11 to adapt to rollers of different diameters. The roller used to wind the cable is usually a hollow cylinder, the outer surface of the cylinder is used to wind the cable, and baffles are arranged at both ends of the roller to prevent the cable from moving. When installing the roller, the support blocks 11 are located at both ends of the roller. The support blocks 11 are moved along the radial direction of the support disk 12 according to the diameter of the roller until each support block 11 is close to the inner surface of the roller to complete the support of the roller.

[0047] See also Figure 2 and Figure 3 Two movable grooves are arranged on the surface of the support disk 12, and the two movable grooves are cross-distributed along the radial direction of the support disk 12. Four support blocks 11 are arranged, and the four support blocks 11 are evenly spaced around the axis of the support disk 12 and are located in the movable grooves. When supporting the wire roller, the four support blocks 11 can be just located on the diameter of the wire roller, and the support is firm and stable.

[0048] There is no limitation on the number of the support blocks 11 and the movable grooves. In the present embodiment, two movable grooves and four support blocks 11 are specifically provided, which can provide a stable support for the wire roller without increasing the manufacturing difficulty.

[0049] The two moving grooves are respectively the first moving groove 121 and the second moving groove 122. Two first transmission rods 123 are arranged in the first moving groove 121, and the second transmission rod 124 is arranged in the second moving groove 122. One end of the first transmission rod 123 is meshed with the middle part of the second transmission rod 124 through a bevel gear. The two first transmission rods 123 are symmetrically distributed on both sides of the second transmission rod 124. Such distribution can make the two first transmission rods 123 and the second transmission rod 124 move synchronously. A support block 11 is threadedly connected to each first transmission rod 123, and two support blocks 11 are threadedly connected to the second transmission rod 124. The two support blocks 11 on the second transmission rod 124 are distributed on the second transmission rod 124 at intervals and the two support blocks 11 are symmetrical relative to the center of the support disk 12. In essence, the distances from the four support blocks 11 to the center of the support disk 12 are equal, and the four support blocks 11 move synchronously, so the size of the four support blocks 11 changes, but the shape remains unchanged, so as to support line rollers of different sizes.

[0050] Specifically, the first moving groove 121 and the second moving groove 122 are provided on the surface of the support plate 12, so that the support block 11 protrudes from the surface of the support plate 12. The support block 11 on the first transmission rod 123 is threadedly connected to the first transmission rod 123, and the support block 11 on the second transmission rod 124 is threadedly connected to the second transmission rod 124. The displacement of the first transmission rod 123 and the second transmission rod 124 is limited by the moving grooves, and at the same time, the support plate 12 limits the rotation of the support block 11, so that the support block 11 can only move along the first transmission rod 123 and the second transmission rod 124.

[0051] Specifically, the second transmission rod 124 is a bidirectional threaded rod, with the bevel gear located in the middle of the second transmission rod 124 as the boundary. The threads of the second transmission rod 124 on both sides of the bevel gear are in opposite directions, which can enable the support blocks 11 on both sides of the bevel gear on the second transmission rod 124 to move simultaneously, at the same speed and in opposite directions, ensuring that the four support blocks 11 are always tightly fitted to the line roller, thereby ensuring the stability of the support.

[0052] Furthermore, the support mechanism 1 also includes a first driving device 125, which can drive the first transmission rod 123 to rotate, or the first driving device 125 can drive the second transmission rod 124 to rotate, thereby avoiding manual adjustment and greatly speeding up the replacement of the line roller. Taking the first driving device 125 driving the first transmission rod 123 to rotate as an example, when a first transmission rod 123 rotates, the gear at the end of the first transmission rod 123 drives the gear in the middle of the second transmission rod 124 meshing therewith to rotate, and the gear in the middle of the second transmission rod 124 drives the gear at the end of another first transmission rod 123 to rotate, thereby realizing the synchronous movement of the four support blocks 11 and avoiding uneven support of the line roller.

[0053] Furthermore, a torque limiter is provided on the first driving device 125, and a safety value is set on the torque limiter. When the support block 11 does not abut against the inner surface of the wire roller, the torque value detected by the torque limiter is lower than the safety value; as the support block 11 moves radially on the support disk 12 until the support block 11 abuts against the inner surface of the wire roller, the support block 11 can no longer move, and the torque gradually increases at this time. When the torque value reaches the safety value, the torque limiter transmits a signal to the controller, and the controller controls the closing of the first driving device 125, so that the support block 11 can stop automatically when it is in place, and the mechanical structure can be well protected.

[0054] See also Figure 4 The retracting mechanism 2 is connected to the two support disks 12, and can adjust the axial spacing between the two support disks 12. By changing the spacing between the two support disks 12 to adapt to wire rollers of different lengths, the applicability of the power cable pay-off vehicle is further improved.

[0055] Specifically, the retracting mechanism 2 and the support plate 12 can be fixedly connected or detachably connected. In the present embodiment, the connection is detachable. Since the support plate 12 is frequently used and has a complex structure, it needs to be maintained regularly. The detachable connection can facilitate maintenance personnel to remove the support plate 12 separately for maintenance, saving construction time and reducing construction difficulty.

[0056] The retraction mechanism 2 includes a linkage assembly 21, which includes a sleeve 212 and a push plate 211. A mounting hole is provided on the push plate 211. The sleeve 212 is connected to the mounting hole through a bearing 2111. The sleeve 212 is fixedly connected to the support plate 12 and the center line of the sleeve 212 coincides with the axis of the support plate 12, further ensuring that the connection between the sleeve 212 and the support plate 12 is more stable.

[0057] The retraction mechanism 2 also includes a retraction component 22, and a group of retraction components 22 are arranged corresponding to each support plate 12. The retraction component 22 is connected to the push plate 211. The retraction component 22 can drive the push plate 211 to move linearly along the axis of the support plate 12. The push plate 211 can make the sleeve 212 drive the support plate 12 to move, so as to complete the change of the distance between the two support plates 12.

[0058] Specifically, the outer ring of the bearing 2111 is fixedly connected to the mounting hole, and the inner ring of the bearing 2111 is interference-connected to one end of the sleeve 212, ensuring that the support plate 12 and the sleeve 212 can move along the axis of the sleeve 212 under the action of the retraction assembly 22, and will not interfere with the rotation of the support plate 12 around the axis of the sleeve 212 under the action of the rotating mechanism 3.

[0059] Furthermore, the outer surface of the sleeve 212 is engraved with scale lines, and a reference scale is set on the frame 4. During the axial movement of the support disk 12, the reference scale is used as a reference, so that the operator can check the specific distance moved by the support disk 12, and the construction personnel can adjust the distance between the support disks 12 according to the length of the wire roller, thereby improving the construction efficiency.

[0060] The retraction assembly 22 includes a guide tube 221 and a third transmission rod 222. The third transmission rod 222 is rotatably connected to the guide tube 221, and the push plate 211 is threadedly connected to the third transmission rod 222. When the third transmission rod 222 rotates, the guide tube 221 limits the axial movement of the third transmission rod 222. Therefore, the push plate 211 can be driven by the third transmission rod 222 to move along the axial direction of the guide tube 221 and drive the sleeve 212 and the support plate 12 to move together.

[0061] Specifically, the push plate 211 is slidably connected to the frame 4 , so that the third transmission rod 222 does not drive the push plate 211 to rotate, but converts the rotation into a linear movement of the push plate 211 through a threaded connection.

[0062] The two retracting assemblies 22 share a power device, and the retracting mechanism 2 also includes a first connecting rod 23 and a second driving device 24. The third transmission rod 222 is rotatably connected to both ends of the first connecting rod 23, ensuring that the retracting assemblies 22 at both ends of the power cable pay-off vehicle can move simultaneously, so that no matter how the spacing between the two support disks 12 is adjusted, the midpoint of the distance between the two support disks 12 is always in the central position of the power cable pay-off vehicle, and the center of gravity of the wire roller can remain stable, ensuring construction safety; the second driving device 24 can drive the first connecting rod 23 to rotate, saving manpower and increasing construction efficiency.

[0063] Specifically, the third transmission rod 222 is connected to the first connecting rod 23 through a pulley and a belt, ensuring that the torque on the first connecting rod 23 driven by the second drive device 24 can be better transmitted to the third transmission rod 222. Pulleys of different specifications can also be used to achieve the speed reduction effect, ensuring that the retraction speed of the retraction assembly 22 is suitable for manual operation.

[0064] See also Figure 5 and Figure 6 The rotating mechanism 3 includes a rotating shaft 31, a second connecting rod 32 and a third driving device 33. The rotating shaft 31 is key-connected with the sleeve 212, and a plurality of key grooves 2121 are axially arranged on the inner wall of the sleeve 212. The rotating shaft 31 can rotate around the axis of the support disk 12. A spline is arranged at one end of the rotating shaft 31, which can drive the sleeve 212 and the support disk 12 to rotate synchronously and keep the movement of the retracting mechanism 2 unaffected. The rotation of the support disk 12 causes the wire roller to follow the rotation to complete the wire roller's wire release and wire reeling operations; the two rotating shafts 31 are respectively connected to the two ends of the second connecting rod 32, which ensures that the rotation drives the two support disks 12 to rotate at a uniform speed at the same time, ensures the stability of wire release and wire reeling, avoids damage to the wire roller structure, and ensures construction safety; the third driving device 33 can drive the second connecting rod 32 to rotate, saves manpower, reduces construction difficulty, and increases construction efficiency.

[0065] Specifically, there is no restriction on the types of the first drive device 125, the second drive device 24 and the third drive device 33. In the present embodiment, they are specifically configured as servo motors, which can ensure that the support mechanism 1, the retracting mechanism 2 and the rotating mechanism 3 can all move in both forward and reverse directions. Moreover, the servo motor is an existing structure and is inexpensive, which can reduce manufacturing costs.

[0066] Furthermore, the rotating mechanism 3 also includes a stop assembly 34, which is sleeved on the rotating shaft 31, and is fixedly connected to the frame 4. The stop assembly 34 includes a fixed sleeve 341, a friction block 342 and a hydraulic cylinder 343. The friction block 342 is arranged inside the fixed sleeve 341, and the hydraulic cylinder 343 is fixedly connected to the fixed sleeve 341. A through hole is provided on the fixed sleeve 341 for passing a hydraulic rod, and the friction block 342 is connected to the piston end. When the piston end of the hydraulic cylinder 343 is in an extended state, the piston end pushes the friction block 342 to make the friction block 342 abut against the rotating shaft 31. The friction block 342 has a large friction force, which can slow down or keep the rotating shaft 31 stationary, so that the wire roller can stop rotating the rotating shaft 31 at any time as needed when retracting and releasing the wire, and can also keep the wire roller stable when moving the power cable pay-off vehicle, thereby reducing safety hazards.

[0067] The general use process of the power cable pay-off vehicle provided in the first embodiment is as follows:

[0068] When installing the wire roller, first clamp the wire roller axially, specifically: align the wire roller with the support blocks 11 on the two support disks 12 respectively, start the second driving device 24 to make the first connecting rod 23 rotate forward, the first connecting rod 23 drives the third transmission rod 222 to rotate, and the push plate 211 drives the sleeve 212 and the support disk 12 to move together with the rotation of the third transmission rod 222, and the two support disks 12 gradually approach each other. The operator can judge the moving distance of the support disk 12 by the scale lines on the outer surface of the sleeve 212 and the reference scale on the surface of the frame 4, and adjust the spacing between the two fixed disks according to the length of the wire roller until the support block 11 is just located inside the wire roller so that the power cable pay-off vehicle can limit the wire rollers of different lengths.

[0069] The line roller is then positioned radially, specifically: the first driving device 125 is started to drive the first transmission rod 123 or the second transmission rod 124 to rotate, so that the support block 11 moves at the same time until it is close to the line roller. At this time, the torque limiter is started, the operation of the first driving device 125 is stopped, the support block 11 stops moving and is close to the line roller, so that the power cable pay-off vehicle can adapt to line rollers of different diameters for limiting.

[0070] When the wire roller is needed to pay out or take up the wire, the third driving device 33 is started to drive the second transmission rod 124 to rotate through the belt and the pulley, and the spline of the second transmission rod 124 drives the rotating shaft 31, the sleeve 212 and the support disk 12 to rotate at the same time, and the support block 11 on the support disk 12 is close to the wire roller, and the huge friction force drives the wire roller to rotate at the same time to complete the paying out and taking up of the wire roller; when the power cable pay-off vehicle is moving, the hydraulic cylinder 343 of the anti-rotation assembly 34 is started, and the piston end of the hydraulic cylinder 343 extends out and pushes the friction block 342 to limit the rotating shaft 31 to prevent the rotation of the wire roller.

[0071] During disassembly, the first driving device 125 is started, and the first driving device 125 drives the first transmission rod 123 or the second transmission rod 124 to reverse, so that the multiple support blocks 11 are moved closer to the center of the support disk 12, and the support blocks 11 gradually separate from the line roller; after the support block 11 is completely separated, the second driving device 24 is started, and the second driving device 24 drives the first connecting rod 23 to reverse, and the first connecting rod 23 drives the third transmission rod 222 to reverse, and the push plate 211 drives the sleeve 212 and the support plate to move, and the distance between the two support plates gradually increases until the support block 11 is completely separated from the line roller, and the disassembly of the line roller is completed.

[0072] Embodiment 2

[0073] refer to Figure 7-Figure 9, this embodiment provides a power cable pay-off vehicle, wherein the parts identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences between the second embodiment and the first embodiment are described. The difference is that a reading mechanism 5 is provided on the outside of the frame 4, a bevel gear is provided at one end of the third transmission rod 222, the reading mechanism 5 includes a visual box 51, a fourth transmission rod 52 and a pointer 53, the fourth transmission rod 52 is provided inside the visual box 51, a bevel gear is provided at one end of the fourth transmission rod 52, the fourth transmission rod 52 is meshed with the third transmission rod 222 through the bevel gear, the pointer 53 is threadedly connected to the fourth transmission rod 52, the visual box 51 is provided with a scale plate, the pointer 53 points to the scale plate, and can indicate the distance.

[0074] When the retracting mechanism 2 is working, the fourth transmission rod 52 moves together with the third transmission rod 222, and the pointer 53 moves axially along the fourth transmission rod 52. Since the third transmission rod 222 and the fourth transmission rod 52 have the same specifications, the moving distance of the pointer 53 is equal to the moving distance of the push plate 211, which can make it easier for construction personnel to check the change in the distance between the support mechanisms 1.

[0075] Specifically, the visual box 51 is provided with an opening, a visual panel 511 is provided inside the opening, and the visual panel 511 has scales thereon.

[0076] The general use process of a power cable laying vehicle provided in the second embodiment is as follows:

[0077] When installing the wire roller, first clamp the wire roller axially, specifically: align the wire roller with the support blocks 11 on the two support disks 12 respectively, start the second driving device 24 to make the first connecting rod 23 rotate forward, the first connecting rod 23 drives the third transmission rod 222 to rotate, and the push plate 211 drives the sleeve 212 and the support disk 12 to move together with the rotation of the third transmission rod 222, and the two support disks 12 gradually approach each other. The operator can obtain the axial displacement of the support disk 12 through the reading mechanism 5 on the side of the frame, and adjust the spacing between the two fixed disks according to the length of the wire roller until the support block 11 is just located inside the wire roller so that the power cable pay-off vehicle can limit the wire rollers of different lengths.

[0078] The line roller is then positioned radially, specifically: the first driving device 125 is started to drive the first transmission rod 123 or the second transmission rod 124 to rotate, so that the support block 11 moves at the same time until it is close to the line roller. At this time, the torque limiter is started, the operation of the first driving device 125 is stopped, the support block 11 stops moving and is close to the line roller, so that the power cable pay-off vehicle can adapt to line rollers of different diameters for limiting.

[0079] When the wire roller is needed to pay out or take up the wire, the third driving device 33 is started to drive the second transmission rod 124 to rotate through the belt and the pulley, and the spline of the second transmission rod 124 drives the rotating shaft 31, the sleeve 212 and the support disk 12 to rotate at the same time, and the support block 11 on the support disk 12 is close to the wire roller, and the huge friction force drives the wire roller to rotate at the same time to complete the paying out and taking up of the wire roller; when the power cable pay-off vehicle is moving, the hydraulic cylinder 343 of the anti-rotation assembly 34 is started, and the piston end of the hydraulic cylinder 343 extends out and pushes the friction block 342 to limit the rotating shaft 31 to prevent the rotation of the wire roller.

[0080] During disassembly, the first driving device 125 is started, and the first driving device 125 drives the first transmission rod 123 or the second transmission rod 124 to reverse, so that the multiple support blocks 11 are moved closer to the center of the support disk 12, and the support blocks 11 gradually separate from the line roller; after the support block 11 is completely separated, the second driving device 24 is started, and the second driving device 24 drives the first connecting rod 23 to reverse, and the first connecting rod 23 drives the third transmission rod 222 to reverse, and the push plate 211 drives the sleeve 212 and the support plate to move, and the distance between the two support plates gradually increases until the support block 11 is completely separated from the line roller, and the disassembly of the line roller is completed.

[0081] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A power cable pay-off vehicle, characterized in that: include: A support mechanism (1) comprises two coaxial support discs (12) arranged at intervals, each of the support discs (12) being provided with a plurality of support blocks (11), the support blocks (11) being capable of adjusting positions along the radial direction of the support disc (12), and the support blocks (11) on the two support discs (12) being capable of supporting power cable rollers; A retracting mechanism (2) connected to the two support plates (12), wherein the retracting mechanism (2) is capable of adjusting the axial distance between the two support plates (12); The retracting mechanism (2) comprises: A linkage assembly (21), comprising a sleeve (212) and a push plate (211), wherein the push plate (211) is provided with a mounting hole, the sleeve (212) and the mounting hole are connected via a bearing (2111), the sleeve (212) is fixedly connected to the support plate (12), and the center line of the sleeve (212) coincides with the axis line of the support plate (12); A retracting assembly (22), wherein a group of the retracting assemblies (22) is provided corresponding to each of the supporting plates (12), the retracting assemblies (22) are connected to the push plate (211), and the retracting assemblies (22) can drive the push plate (211) to move linearly along the axis of the supporting plate (12); The retracting assembly (22) comprises a guide tube (221) and a third transmission rod (222), the third transmission rod (222) being rotatably connected to the guide tube (221), and the push plate (211) being threadedly connected to the third transmission rod (222); A reading mechanism (5), the reading mechanism (5) comprising a visual box (51), a fourth transmission rod (52) and a pointer (53), the fourth transmission rod (52) being arranged inside the visual box (51), the fourth transmission rod (52) being connected to the third transmission rod (222), the pointer (53) being threadedly connected to the fourth transmission rod (52), the surface of the visual box (51) being provided with a scale, and the pointer (53) being capable of indicating the scale.

2. The power cable pay-off vehicle according to claim 1, characterized in that: The surface of the support disk (12) is provided with two movable grooves, the two movable grooves are distributed in a cross shape along the radial direction of the support disk (12), and four support blocks (11) are provided, the four support blocks (11) are evenly spaced and distributed around the axis of the support disk (12) and are located in the movable grooves.

3. The power cable pay-off vehicle according to claim 2, characterized in that: The two movable grooves are respectively a first movable groove (121) and a second movable groove (122); two first transmission rods (123) are arranged in the first movable groove (121); a second transmission rod (124) is arranged in the second movable groove (122); one end of the first transmission rod (123) is meshed with the middle part of the second transmission rod (124) through a bevel gear; and the two first transmission rods (123) are symmetrically distributed on both sides of the second transmission rod (124).

4. The power cable pay-off vehicle according to claim 3, characterized in that: Each of the first transmission rods (123) is threadedly connected to one of the support blocks (11), and each of the second transmission rods (124) is threadedly connected to two of the support blocks (11).

5. The power cable pay-off vehicle according to claim 3, characterized in that: The support mechanism (1) further comprises a first driving device (125), wherein the first driving device (125) is capable of driving one of the first transmission rods (123) to rotate, or the first driving device (125) is capable of driving the second transmission rod (124) to rotate.

6. The power cable pay-off vehicle according to claim 1, characterized in that: The retracting mechanism (2) further comprises a first connecting rod (23) and a second driving device (24); the two third transmission rods (222) are respectively connected to the two ends of the first connecting rod (23); and the second driving device (24) is capable of driving the first connecting rod (23) to rotate.

7. The power cable pay-off vehicle according to claim 1, characterized in that: The power cable pay-off vehicle further comprises a rotating mechanism (3), wherein the rotating mechanism (3) comprises: A rotating shaft (31) is key-connected to the sleeve (212); a plurality of key slots (2121) are axially arranged on the inner wall of the sleeve (212); the rotating shaft (31) is capable of rotating around the axis of the support plate (12); and the rotating shaft (31) is capable of sliding along the key slots (2121); a second connecting rod (32) and a third driving device (33), wherein the rotating shaft (31) is connected to the second connecting rod (32), and the third driving device (33) is capable of driving the second connecting rod (32) to rotate; A rotation-stopping component (34), wherein the rotation-stopping component (34) is sleeved on the rotating shaft (31).

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