Distributed power grid distribution cable laying device and operation method thereof

Abstract

The invention discloses a distributed power grid distribution cable laying device and an operation method thereof.The distributed power grid distribution cable laying device comprises a cart mechanism, a winding drum adjustable supporting mechanism and a cable guiding and straightening mechanism, and the winding drum adjustable supporting mechanism and the cable guiding and straightening mechanism are fixedly arranged at the front end and the rear end of the cart mechanism respectively; the cable guiding and straightening mechanism comprises a cable preheating and straightening assembly, cables with different bending deformation degrees can be subjected to heat treatment through the cable preheating and straightening assembly and then subjected to anti-bending shaping processing, the cables released in a coiled mode can be smoothly straightened before being laid, and the laying track can be conveniently observed and adjusted. The cable preheating and straightening assembly further comprises a stroke counting device, and the actual leading-out length of the cable is obtained after conversion of the number of rotation turns and the transmission ratio of the stroke counting device, so that the cable laying length can be measured and calculated conveniently, and great convenience is brought to cable laying work.

Description

Technical Field

[0001] The present invention relates to the technical field of distributed power grid distribution, and in particular to a distributed power grid distribution cable laying device and an operating method thereof. Background Art

[0002] The layout of distributed smart grids is increasingly becoming an important strategic measure for the country to seize the commanding heights of the future low-carbon economy. It has become a social consensus to accelerate the construction of a strong smart grid with coordinated development of various voltage levels and to build a safe, reliable, clean and efficient power supply system. In the construction of distributed power grids, the large-scale laying of cables has become the top priority of power grid construction. Cable laying mostly uses cable pulling equipment to transport cables wound on reels.

[0003] For example, Chinese patent CN118017400A discloses a cable laying frame, including a laying assembly installed on the laying frame body; a guide assembly rotatably connected to the laying frame body; an angle adjustment assembly installed on the laying frame body and connected to the guide assembly; and a traction assembly connected to the guide assembly. When laying the cable, the guide assembly can drive the cable to slide so that the cable can be laid in a suitable position. The angle adjustment assembly can drive the guide assembly to adjust the height and angle, thereby avoiding wear on the cable and improving the protection performance and service life of the cable. The traction assembly can drive the cable to be automatically conveyed, and the distance between the two sets of traction frames can be adjusted through the distance adjustment assembly, so that when laying and conveying cables of different specifications, there is no need to replace the traction frame, so that the cable conveying effect is good and the efficiency is high, which is conducive to the laying of the cable.

[0004] Although the existing patent has set up a series of structures for cable traction constraint control, its main function is to adjust and control the cable laying trajectory; in actual cable laying work, the difficulty of trajectory laying is not only affected by factors such as traction angle and height, but also because the rolled cable is in a bent state after being released, especially in winter when the temperature is low, the cable skin is harder and difficult to correct manually, making it difficult to lay it flat according to the designed trajectory. It is also not convenient to measure the laying length, which also brings great trouble to the cable laying work.

[0005] Based on this, the present invention designs a distributed power grid distribution cable laying device and an operating method thereof to solve the above problems. Summary of the invention

[0006] The purpose of the invention is to provide a distributed power grid distribution cable laying device and an operating method thereof to solve the above technical problems.

[0007] To achieve the above-mentioned purpose, the invention provides the following technical solutions: a distributed power grid distribution cable laying device, comprising a trolley mechanism, an adjustable drum support mechanism and a cable guiding and straightening mechanism, wherein the adjustable drum support mechanism and the cable guiding and straightening mechanism are respectively fixedly arranged at the front and rear ends of the trolley mechanism, wherein the cable guiding and straightening mechanism includes a cable preheating and straightening assembly, through which cables with different degrees of bending deformation can be subjected to heat treatment and then reverse bending shaping processing.

[0008] As a preferred solution, the cart mechanism includes a carrier plate, a universal movable wheel is installed at the bottom of the carrier plate, and a push-pull handle is fixedly provided at the rear end of the top of the carrier plate.

[0009] As a preferred solution, the adjustable support mechanism of the reel includes two mounting columns symmetrically distributed on the left and right, the mounting columns are hollow structures, and sliding grooves are provided on the side walls facing each other of the two mounting columns, a screw is provided inside the mounting column, and the upper and lower ends of the screw are rotatably installed by an upper bearing and a lower bearing respectively, a lifting handwheel is fixedly provided on the top of the screw, and a lifting block which can move up and down is provided in the inner cavity of the mounting column, and the middle part of the lifting block is threadedly connected to the screw by a lifting threaded hole, and a supporting seat is fixedly connected to the side of the lifting block, and the supporting seat passes through the inner cavity of the mounting column through the sliding groove, and a limiting groove is provided on the top surface of the supporting seat.

[0010] As a preferred solution, it also includes a cable reel, and limiting rods that are engaged with the limiting grooves are fixedly arranged at the axis centers of both ends of the cable reel.

[0011] As a preferred embodiment, the cable guiding and straightening mechanism includes a mounting plate symmetrically distributed on the left and right, and mutually parallel bidirectional screws and limit slide bars are respectively arranged between the mounting plates on both sides, both ends of the bidirectional screw are rotatably mounted on the mounting plates through screw bearings, and the end heads are connected with guide hand wheels, and both ends of the limit slide bar are fixedly mounted on the mounting plates, and a moving block is arranged between the mounting plates on both sides, the upper part of the moving block is threadedly connected to the bidirectional screw through a bidirectional threaded hole, and the lower part of the moving block is slidably connected to the limit slide bar through a sliding hole, and a connecting rod is rotatably mounted on the top of the moving block through a swing bearing, and the top end of the connecting rod is connected to the cable preheating and straightening assembly.

[0012] As a preferred embodiment, the cable preheating and straightening assembly includes an installation box, and the front and rear side walls of the installation box are respectively provided with a cable inlet and a cable outlet, and the inner cavity of the installation box is respectively provided with a fixed main guide wheel and two adjustable auxiliary guide wheels, and the two adjustable auxiliary guide wheels are respectively symmetrically distributed on the left and right sides of the fixed main guide wheel, and the fixed main guide wheel is rotatably installed on the wall of the installation box through the main wheel shaft, and the two adjustable auxiliary guide wheels are respectively rotatably installed on a rocker arm, and the middle part of the rocker arm is rotatably installed on the wall of the installation box through a pin shaft, and the upper end of the rocker arm is a telescopic rod structure and a worm gear is fixedly installed thereon, and a worm is meshed between the worm gears on both sides, and the upper end of the worm gear is installed on the top wall of the installation box through a bearing, and a turning handle is connected to the top end of the worm gear.

[0013] As a preferred solution, the circumferential side walls of the fixed main guide wheel and the adjustable auxiliary guide wheel are both provided with limiting grooves matching the outer diameter of the cable.

[0014] As a preferred solution, air inlets are respectively provided on the upper walls on the front and rear sides of the installation box, and a hot air blower is installed outside the air inlet. The intersection of the wind directions of the hot air blowers on both sides converges at the top of the fixed main wheel.

[0015] As a preferred solution, the rear end of the main wheel shaft extends out of the installation box and is connected to a transmission pulley, a travel counter is fixedly mounted on the outer wall of the installation box, and the transmission pulley is connected to the input wheel of the travel counter through a transmission belt.

[0016] An operating method of a distributed power grid distribution cable laying device comprises the following steps:

[0017] Step S: The cable reel wound with the cable is mounted on the supporting seats on both sides of the reel adjustable support mechanism through the limit rods at both ends;

[0018] Step S: The cable drum is adjusted to a suitable height by synchronously controlling the lifting hand wheels on both sides of the adjustable support mechanism of the drum, so that the cable end of the cable drum can be smoothly inserted into the cable preheating and straightening assembly of the cable guiding and straightening mechanism after being led out from the bottom thereof;

[0019] Step S: Adjust and lift the adjustable auxiliary guide wheel of the installation box in the cable preheating and straightening assembly by turning the handle, and then extend the cable end through the cable inlet into the inner cavity of the installation box, and after passing through the two adjustable auxiliary guide wheels and the fixed main guide wheel, lead out from the cable outlet;

[0020] Step S: Adjust the downward pressure of the adjustable auxiliary guide wheel by turning the handle again, pull the cable end, and observe the bending state of the cable. According to the bending state, further adjust the downward pressure stroke of the adjustable auxiliary guide wheel until the cable is close to a straight state after being led out;

[0021] Step S: During the cable lead-out process, the input wheel of the travel counter is indirectly driven to rotate through the drive pulley and the drive belt, and the actual lead-out length of the cable is obtained by converting the number of rotations of the travel counter and the transmission ratio.

[0022] Compared with the prior art, the invention has the following beneficial effects:

[0023] The distributed power grid distribution cable laying device of the present invention mainly includes a trolley mechanism, a reel adjustable support mechanism and a cable guiding and straightening mechanism, wherein the cable guiding and straightening mechanism includes a cable preheating and straightening assembly, through which cables with different bending deformation degrees can be heat-treated and then subjected to reverse bending shaping processing, so that the cables released in a roll can be smoothly straightened before laying, making it convenient to observe and adjust the laying trajectory.

[0024] The cable preheating and straightening assembly of the present invention also includes a stroke counting device. During the cable lead-out process, the input wheel of the stroke counter is indirectly driven to rotate through the transmission pulley and the transmission belt. After the number of rotations of the stroke counter and the transmission ratio are converted, the actual lead-out length of the cable is obtained, thereby conveniently measuring the cable laying length, which brings great convenience to the cable laying work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 It is a schematic diagram of the partial structure of the adjustable support mechanism of the reel of the present invention;

[0029] Figure 4 It is a schematic diagram of the overall side structure of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the cable preheating and straightening assembly of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the stroke counting device of the present invention.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 100-trolley mechanism, 200-adjustable drum support mechanism, 300-cable guide straightening mechanism, 400-cable preheating straightening assembly, 1-carrier plate, 2-universal movable wheel, 3-mounting column, 4-upper bearing, 5-push-pull handle, 6-cable drum, 7-lifting handwheel, 8-bidirectional screw, 10-limiting slide rod, 11-screw bearing, 12-moving block, 13-mounting plate, 14-guide handwheel, 15-support seat, 16-slide groove, 17-limiting groove, 18-limiting rod, 1 9-swing bearing, 20-bidirectional threaded hole, 21-sliding hole, 22-connecting rod, 23-lifting block, 24-screw, 25-lower bearing, 26-lifting threaded hole, 30-fixed main guide wheel, 31-adjustable secondary guide wheel, 32-main wheel shaft, 33-rocker, 34-pin shaft, 35-worm, 36-turn handle, 37-limiting groove, 38-air inlet, 39-hot air blower, 40-drive pulley, 41-stroke counter, 42-drive belt, 43-input wheel, 44-worm wheel. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the invention to clearly and completely describe the technical solutions in the embodiments of the invention. Obviously, the described embodiments are only part of the embodiments of the invention, not all of the embodiments. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0035] Example 1

[0036] See also Figure 1-6 , the invention provides a technical solution for a distributed power grid distribution cable laying device:

[0037] The invention comprises a trolley mechanism 100, an adjustable drum support mechanism 200 and a cable guiding and straightening mechanism 300. The adjustable drum support mechanism 200 and the cable guiding and straightening mechanism 300 are respectively fixedly arranged at the front and rear ends of the trolley mechanism 100. The cable guiding and straightening mechanism 300 comprises a cable preheating and straightening assembly 400. The cable preheating and straightening assembly 400 can be used to perform heat treatment and then reverse bending shaping processing on cables with different degrees of bending deformation.

[0038] Among them, the trolley mechanism 100 includes a carrier plate 1, an adjustable reel support mechanism 200 and a cable guide straightening mechanism 300 are respectively fixed on the carrier plate 1, a universal movable wheel 2 is installed at the bottom of the carrier plate 1 to facilitate the movement of the device, and a push-pull handle 5 is fixed at the top rear end of the carrier plate 1 to facilitate the towing of the mobile device.

[0039] Among them, the adjustable drum support mechanism 200 includes two installation columns 3 that are symmetrically distributed on the left and right. The installation columns 3 are cavity structures, and the two installation columns 3 have side walls facing each other with slide grooves 16. A screw rod 24 is arranged inside the installation column 3. The upper and lower ends of the screw rod 24 are rotatably installed through an upper bearing 4 and a lower bearing 25 respectively. A lifting hand wheel 7 is fixedly arranged on the top of the screw rod 24. A lifting block 23 that can move up and down is arranged in the inner cavity of the installation column 3. The middle part of the lifting block 23 is threadedly connected to the screw 24 through a lifting threaded hole 26. A supporting seat 15 is fixedly connected to the side of the lifting block 23. The supporting seat 15 passes through the inner cavity of the installation column 3 through the slide groove 16. A limiting groove 17 is arranged on the top surface of the supporting seat 15. The device also includes a cable reel 6. The two ends of the cable reel 6 Limit rods 18 that are engaged with the limit grooves 17 are fixedly provided at the end axis centers respectively; during actual work, the support seats 15 on both sides are first synchronously adjusted to the same height, and the height needs to ensure that the cable reel 6 can be placed smoothly, and then the cable reel 6 with the cable wound on it is mounted on the support seats 15 on both sides through the limit rods 18 at both ends, and further adjusted according to the actual working conditions. The specific operation is to synchronously adjust the lifting hand wheels 7 on both sides, and through the threaded transmission action of the screw rod 24 and the lifting block 23, drive the lifting block 23 to move to the required height, so that after the cable end of the subsequent cable reel 6 is led out, it can correspond to the height of the cable preheating and straightening assembly 400, thereby reducing the traction resistance and friction caused by the height difference, and also conveniently controlling the direction of the cable lead-out trajectory.

[0040] Among them, the cable guiding and straightening mechanism 300 includes a mounting plate 13 symmetrically distributed on the left and right, and mutually parallel bidirectional screws 8 and limiting slide bars 10 are respectively arranged between the mounting plates 13 on both sides. Both ends of the bidirectional screw 8 are rotatably installed with the mounting plates 13 through screw bearings 11, and the end is connected with a guiding handwheel 14. Both ends of the limiting slide bar 10 are fixedly installed with the mounting plates 13, and a moving block 12 is arranged between the mounting plates 13 on both sides. The upper part of the moving block 12 is threadedly connected with the bidirectional screw 8 through a bidirectional threaded hole 20. Through the cooperation between the bidirectional screw 8 and the bidirectional threaded hole 20, the automatic reciprocating motion of the moving block 12 can be realized, so as to adapt to the position change in the width direction of the reel during the cable lead-out process. The lower part of the moving block 12 is connected to the limiting slide bar 10 through a sliding hole 21 The sliding connection ensures that the moving block 12 is in an upright state through the sliding cooperation between the limiting sliding rod 10 and the sliding hole 21, so that the bidirectional screw 8 and the bidirectional threaded hole 20 can be smoothly transmitted. The top of the moving block 12 is rotatably installed with a connecting rod 22 through a swing bearing 19, and the top of the connecting rod 22 is connected to the cable preheating and straightening assembly 400; during actual work, the cable is led out through the cable preheating and straightening assembly 400, and the construction personnel pull the cable end and continue to pull it. The cable is gradually released from the cable reel 6, and the cable drives the moving block 12 to move back and forth along the axial direction of the bidirectional screw 8. During the release process, due to the reciprocating motion part structure of the cable guiding and straightening mechanism 300, the cable can be smoothly translated left and right, and adapt to angle and position changes, thereby ensuring smooth cable lead-out.

[0041] The cable preheating and straightening assembly 400 includes an installation box 27. The front and rear side walls of the installation box 27 are respectively provided with a cable inlet 28 and a cable outlet 29. The inner cavity of the installation box 27 is respectively provided with a fixed main guide wheel 30 and two adjustable auxiliary guide wheels 31. The circumferential side walls of the fixed main guide wheel 30 and the adjustable auxiliary guide wheels 31 are both provided with limiting grooves 37 matching the outer diameter of the cable to prevent lateral slippage when the cable contacts the guide wheel. The two adjustable auxiliary guide wheels 31 are symmetrically distributed on the left and right sides of the fixed main guide wheel 30. The fixed main guide wheel 30 is connected to the main wheel shaft. The two adjustable auxiliary guide wheels 31 are rotatably mounted on a swing rod 33, and the middle part of the swing rod 33 is rotatably mounted on the wall of the mounting box 27 through a pin shaft 34. The upper end of the swing rod 33 is a telescopic rod structure, and a worm gear 44 is fixedly mounted. The telescopic rod structure at the upper end of the swing rod 33 is built with a supporting spring to maintain the upper end of the swing rod 33 in an elastically extended state, and the elastic coefficient of the supporting spring should be ensured to be greater than the reaction force generated by the straightening cable. A worm 35 is meshed between the worm gears 44 on both sides, and the upper end of the worm 35 is provided with a worm gear 35. The worm 35 is mounted on the top wall of the mounting box 27 through a bearing, and a handle 36 is connected to the top of the worm 35; the adjustment movement direction of the two adjustable auxiliary guide wheels 31 in the device is designed to be separated on the side and close to each other on the side. The uniqueness of such an adjustment structure is that it can achieve a greater degree of bending adjustment through a smaller moving stroke, and the worm gear transmission structure itself has the characteristics of one-way transmission, which can prevent the worm gear from being reversely driven and retreated by the reaction force when straightening the cable; in actual work, it is necessary to first rotate the handle 36 to drive the worm 35 and the worm wheels 4 on both sides. 4 meshing transmission, and at the same time drive the upper ends of the swing rods 33 on both sides to extend and retract and make the swing rods 33 swing, thereby controlling the adjustable auxiliary guide wheels 31 on both sides to lift up to the side and upward to facilitate the cable end to pass through; after the cable end passes through the installation box 27 from the cable inlet 28 and the cable outlet 29, the adjustable auxiliary guide wheels 31 on both sides are adjusted to move closer to the side and downward to be pressed by rotating the handle 36 again, so that the cable passes through in a reverse bending shape, and the bending direction of the cable should be opposite to the bending direction of the cable before entering the cable preheating and straightening assembly 400, so as to achieve the reverse bending straightening effect.

[0042] In an environment with low temperature, the insulation skin on the cable surface tends to harden, which makes straightening more difficult. Therefore, in this embodiment, air inlets 38 are respectively provided on the upper wall surfaces on the front and rear sides of the installation box 27. A hot air blower 39 is installed outside the air inlet 38. The intersection of the wind directions of the hot air blowers 39 on both sides converges at the top of the fixed main wheel 30. During the straightening process, hot air can be concentrated and blown by the hot air blowers 39 on both sides, thereby softening the cable skin and making the cable easier to shape and straighten.

[0043] During the cable laying construction, the corresponding length of cable needs to be cut according to the designed route during the construction phase, and the actual length in use needs to be recorded after the construction. The traditional length testing method generally relies on manual measurement of the path length for estimation, which is not only difficult to operate and inefficient, but also inaccurate. Therefore, in this embodiment, the rear end of the main wheel shaft 32 extends out of the installation box 27 and is connected to a transmission pulley 40. A stroke counter 41 is fixedly installed on the outer wall of the installation box 27. The transmission pulley 40 is connected to the input wheel 43 of the stroke counter 41 through a transmission belt 42. During actual work, since the cable is in contact with the fixed lead wheel 30 at the other end of the main wheel shaft 32, as the cable is led out, the fixed lead wheel 30 also rotates, and at the same time drives the transmission pulley 40 to rotate. The transmission pulley 40 is connected to the input wheel 43 of the stroke counter 41 through the transmission belt 42, so that the rotation stroke is transmitted to the stroke counter 41 according to a certain transmission ratio. The stroke counter 41 can accurately record the number of rotations, which can be indirectly converted into the actual lead-out length of the cable through the actual transmission ratio relationship, thereby realizing fast and accurate recording of the cable construction length.

[0044] Example 2

[0045] Based on the distributed power grid distribution cable laying device of Example 1, this embodiment provides an operation method of the distributed power grid distribution cable laying device, including the following construction steps:

[0046] Step S10: The cable reel 6 wound with the cable is mounted on the supporting seats 15 on both sides of the reel adjustable support mechanism 200 through the limiting rods 18 at both ends thereof;

[0047] Step S20: The cable drum 6 is adjusted to a suitable height by synchronously controlling the lifting hand wheels 7 on both sides of the adjustable drum support mechanism 200, so that the cable end of the cable drum 6 can be smoothly inserted into the cable preheating and straightening assembly 400 of the cable guiding and straightening mechanism 300 after being led out from the bottom thereof;

[0048] Step S30: The adjustable auxiliary guide wheel 31 of the installation box 27 in the cable preheating and straightening assembly 400 is adjusted and lifted by turning the handle 36, and then the cable end is extended into the inner cavity of the installation box 27 through the cable inlet 28, and after passing through the two adjustable auxiliary guide wheels 31 and the fixed main guide wheel 30, it is led out from the cable outlet 29;

[0049] Step S40: adjusting the adjustable auxiliary guide wheel 31 downward again by turning the handle 36, pulling the cable end, and observing the bending state of the cable, and further adjusting the downward stroke of the adjustable auxiliary guide wheel 31 according to the bending state until the cable is close to a straight state after being led out;

[0050] Step S50: During the cable lead-out process, the input wheel 43 of the travel counter 41 is indirectly driven to rotate through the drive pulley 40 and the drive belt 42, and the actual cable lead-out length is obtained by converting the number of rotations of the travel counter 41 and the transmission ratio.

[0051] In the description of the invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0052] In the invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated 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. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the invention according to the specific circumstances.

[0053] Although embodiments of the 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 invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A distributed power grid distribution cable laying device, characterized in that: The invention comprises a trolley mechanism (100), a reel adjustable support mechanism (200) and a cable guiding and straightening mechanism (300), wherein the reel adjustable support mechanism (200) and the cable guiding and straightening mechanism (300) are respectively fixedly arranged at the front and rear ends of the trolley mechanism (100), wherein the cable guiding and straightening mechanism (300) comprises a cable preheating and straightening assembly (400), and the cable preheating and straightening assembly (400) can be used to perform heat treatment and then reverse bending shaping processing on cables with different bending deformation degrees.

2. A distributed power distribution cable laying device according to claim 1, characterized in that: The cart mechanism (100) comprises a carrier plate (1), a universal movable wheel (2) is installed at the bottom of the carrier plate (1), and a push-pull handle (5) is fixedly provided at the rear end of the top of the carrier plate (1).

3. A distributed power grid distribution cable laying device according to claim 1, characterized in that: The adjustable reel support mechanism (200) comprises two installation columns (3) symmetrically distributed on the left and right sides, the installation columns (3) are of a cavity structure, and a slide groove (16) is provided on the side wall of the two installation columns (3) facing each other, a screw rod (24) is provided inside the installation column (3), and the upper and lower ends of the screw rod (24) are rotatably installed respectively through an upper bearing (4) and a lower bearing (25), and a lifting hand wheel (7) is fixedly provided on the top of the screw rod (24), and a lifting block (23) movable up and down is provided in the inner cavity of the installation column (3), and the middle part of the lifting block (23) is threadedly connected to the screw rod (24) by a lifting threaded hole (26) provided, and a support seat (15) is fixedly connected to the side of the lifting block (23), and the support seat (15) passes through the inner cavity of the installation column (3) through the slide groove (16), and a limiting groove (17) is provided on the top surface of the support seat (15).

4. A distributed power grid distribution cable laying device according to claim 2, characterized in that: It also comprises a cable drum (6), wherein limiting rods (18) which are engaged and matched with the limiting grooves (17) are respectively fixedly arranged at the axis centers of both ends of the cable drum (6).

5. A distributed power grid distribution cable laying device according to claim 1, characterized in that: The cable guiding and straightening mechanism (300) comprises a mounting plate (13) symmetrically distributed on the left and right sides, and mutually parallel bidirectional screws (8) and limiting slide bars (10) are respectively arranged between the mounting plates (13) on both sides, and the two ends of the bidirectional screws (8) are rotatably mounted on the mounting plates (13) through screw bearings (11), and the ends are connected to guide hand wheels (14), and the two ends of the limiting slide bars (10) are fixedly mounted on the mounting plates (13), and a moving block (12) is arranged between the mounting plates (13) on both sides, and the upper part of the moving block (12) is threadedly connected to the bidirectional screws (8) through a bidirectional threaded hole (20), and the lower part of the moving block (12) is slidably connected to the limiting slide bars (10) through a sliding hole (21), and the top of the moving block (12) is rotatably mounted with a connecting rod (22) through a swing bearing (19), and the top end of the connecting rod (22) is connected to the cable preheating and straightening assembly (400).

6. A distributed power grid distribution cable laying device according to claim 5, characterized in that: The cable preheating and straightening assembly (400) comprises an installation box (27), the front and rear side walls of the installation box (27) are respectively provided with a cable inlet (28) and a cable outlet (29), the inner cavity of the installation box (27) is respectively provided with a fixed main guide wheel (30) and two adjustable auxiliary guide wheels (31), the two adjustable auxiliary guide wheels (31) are respectively symmetrically distributed on the left and right sides of the fixed main guide wheel (30), the fixed main guide wheel (30) is rotatably installed on the installation box (27) through a main wheel shaft (32) ) wall, the two adjustable auxiliary guide wheels (31) are rotatably mounted on a swing rod (33), the middle part of the swing rod (33) is rotatably mounted on the wall of the installation box (27) through a pin shaft (34), the upper end of the swing rod (33) is a telescopic rod structure and is fixedly mounted with a worm wheel (44), a worm (35) is meshed between the worm wheels (44) on both sides, the upper end of the worm (35) is mounted on the top wall of the installation box (27) through a bearing, and the top end of the worm (35) is connected to a turning handle (36).

7. A distributed power grid distribution cable laying device according to claim 6, characterized in that: The circumferential side walls of the fixed main guide wheel (30) and the adjustable auxiliary guide wheel (31) are both provided with limiting grooves (37) matching the outer diameter of the cable.

8. A distributed power grid distribution cable laying device according to claim 6, characterized in that: Air inlets (38) are respectively provided on the upper wall surfaces of the front and rear sides of the installation box (27), and a hot air blower (39) is installed outside the air inlet (38). The intersection of the wind directions of the hot air blowers (39) on both sides converges at the top of the fixed main wheel (30).

9. A distributed power grid distribution cable laying device according to claim 6, characterized in that: The rear end of the main wheel shaft (32) extends out of the installation box (27) and is connected to a transmission pulley (40); a travel counter (41) is fixedly mounted on the outer wall of the installation box (27); and the transmission pulley (40) is transmission-connected to an input wheel (43) of the travel counter (41) via a transmission belt (42).

10. An operating method of a distributed power grid distribution cable laying device, characterized in that: The following steps are involved: step S10: The cable reel (6) wound with the cable is mounted on the supporting seats (15) on both sides of the reel adjustable support mechanism (200) via the limiting rods (18) at both ends; Step S20: adjusting the cable drum (6) to a suitable height by synchronously controlling the lifting hand wheels (7) on both sides of the drum adjustable support mechanism (200), so that the cable end of the cable drum (6) can be smoothly inserted into the cable preheating and straightening assembly (400) of the cable guiding and straightening mechanism (300) after being led out from the bottom thereof; Step S30: adjusting and lifting the adjustable auxiliary guide wheel (31) of the installation box (27) in the cable preheating and straightening assembly (400) by turning the handle (36), and then extending the cable end through the cable inlet (28) into the inner cavity of the installation box (27), and passing around the two adjustable auxiliary guide wheels (31) and the fixed main guide wheel (30), and then leading out from the cable outlet (29); Step S40: adjusting the adjustable auxiliary guide wheel (31) downward by turning the handle (36) again, pulling the cable end, and observing the bending state of the cable, and further adjusting the downward stroke of the adjustable auxiliary guide wheel (31) according to the bending state until the cable is close to a straight state after being led out; Step S50: During the cable lead-out process, the input wheel (43) of the travel counter (41) is indirectly driven to rotate through the drive pulley (40) and the drive belt (42), and the actual cable lead-out length is obtained by converting the number of rotations of the travel counter (41) and the transmission ratio.

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