Electric wire and cable transportation equipment for national power grid construction

Abstract

The invention is applicable to the technical field of cable transportation, and provides electric wire and cable transportation equipment for national grid construction, which comprises a support module, a hydraulic support leg and rollers, the support module comprises a middle support plate, a rear support plate and a front support plate, and the hydraulic support leg is mounted at the bottom of the middle support plate. The two pairs of rollers are installed at the bottoms of the rear supporting plate and the front supporting plate respectively, the rotating assembly is installed on the rear supporting plate and used for enabling the cable pay-off reel to rotate in the equipment, and the rotating assembly comprises a rotating shaft rotationally connected to the interior of the rear supporting plate; the cable pay-off device has the beneficial effects that when too many cable pay-off parts do not need to be used, the pay-off reel rotates reversely on the device to enable the paid-off cable to be wound on the pay-off reel again, at the moment, due to the fact that the lead frame slides on the reciprocating lead screw in a reciprocating mode, the cable can be evenly wound on the pay-off reel, and the cable pay-off efficiency is improved. And stacking of the cables on the pay-off reel caused by manual cable returning is avoided.

Description

TECHNICAL FIELD

[0002] The application belongs to the technical field of cable transportation, and particularly relates to a power line cable transportation device for state grid construction. BACKGROUND

[0003] In state grid construction and upgrading and reconstruction projects, power line cable transportation and on-site laying are core links throughout the whole construction process, and their operation efficiency and safety directly affect project progress, construction cost and power grid operation reliability.

[0004] In the cable transportation link, the traditional device usually only relies on a simple frame structure to carry the cable laying disc, and lacks an effective limiting and locking mechanism. Since the laying disc is usually circular in structure, it has poor stability and is prone to rolling deviation when transported on a bumpy road, which not only may cause abrasion of the cable outer skin and damage to the internal conductor, but also may cause a safety accident due to accidental sliding of the laying disc, posing a serious threat to construction personnel and the surrounding environment.

[0005] For specific scenarios such as ground lower layer cable paving, the traditional device is difficult to meet the operation requirements. Such construction usually needs to complete device movement and cable laying simultaneously, and the existing device cannot realize the linkage of movement and laying, and needs manual cooperation to drag the cable, which not only has high labor intensity, but also may cause ground pit collapse or cable damage due to cable dragging.

[0006] After the operation is completed, the cable end is exposed to the external environment, which is easy to be contaminated with dust, soil or eroded by rainwater, causing conductor oxidation and conductivity decline, which not only increases the difficulty of subsequent joint processing, but also may leave hidden dangers for power grid operation safety. SUMMARY

[0007] The purpose of the embodiment of the application is to provide a power line cable transportation device for state grid construction, which aims to solve the technical problems existing in the prior art mentioned in the background.

[0008] The embodiment of the application is implemented as follows: a power line cable transportation device for state grid construction, comprising a support module, a hydraulic support leg and a roller, the support module comprising a middle support plate, a rear support plate and a front support plate, the hydraulic support leg being installed at the bottom of the middle support plate, two pairs of rollers being respectively installed at the bottom of the rear support plate and the front support plate, and further comprising: A rotating assembly, mounted on a rear support plate, allows the cable reel to rotate within the equipment. The rotating assembly includes a rotating shaft rotatably connected inside the rear support plate; a reciprocating screw rotatably connected inside the rear support plate and below the rotating shaft; a first transmission belt drivingly connecting the reciprocating screw and a roller; a wire guide slidably connected to the outer wall of the reciprocating screw; the wire guide slidably connected to the inner wall of the rear support plate; a second transmission belt drivingly connecting the reciprocating screw and the rotating shaft; a flexible support plate slidably connected inside the rear support plate; the bottom of the flexible support plate being mounted on the side wall of a middle support plate; symmetrically slidably connected rollers on the rotating shaft; auxiliary rollers rotatably connected to opposite sides of each roller; support arms rotatably connected between each auxiliary roller and the top of the flexible support plate; and a driven shaft rotatably connected to the front support plate. A locking component, mounted on the center support plate, is used to hold unused feed reels on the equipment; The cross-section protection component, installed on the center support plate, is used to adjust the cable laying status and seal the cable ends.

[0009] As a preferred technical solution of the present invention: the rear support plate and the front support plate are symmetrically slidably connected on both sides of the middle support plate, and the rollers are in a suspended state when the hydraulic support feet are extended.

[0010] As another preferred technical solution of the present invention: when the rear support plate and the front support plate slide to the end on both sides of the middle support plate, the wire feeding reel on the middle support plate falls on the middle support plate. When the rear support plate and the front support plate are close to each other on both sides of the middle support plate, the wire feeding reel on the middle support plate is suspended and the edge of the wire feeding reel is in contact with the surface of the rotating wheel and the driven shaft.

[0011] As another preferred technical solution of the present invention: the locking component includes U-shaped air grooves symmetrically formed inside the middle support plate. A pressure plate is vertically slidably connected to one end of the U-shaped air groove near the edge of the middle support plate. A first spring is fixedly connected between the pressure plate and the middle support plate. A support frame is horizontally slidably connected to one end of the U-shaped air groove near the middle of the middle support plate. A toothed shaft is symmetrically fixedly connected to one side of the support frame near the middle of the support module. The toothed shafts are all slidably connected inside the middle support plate. A toothed plate that meshes with the toothed shaft is slidably connected to the upper surface of the middle support plate. A second spring is fixedly connected between the bottom of the toothed plate and the middle support plate. A trapezoidal plate is symmetrically fixedly connected to the outer wall of the toothed plate. A sliding plate is fixedly connected to the inner wall of the rear support plate.

[0012] As another preferred technical solution of the present invention: the top of the pressure plate abuts against the edge of the wire feeding reel, and when the first spring is not compressed, the pressure plate slides out above the middle support plate, and the U-shaped air groove is filled with hydraulic oil.

[0013] As another preferred technical solution of the present invention: the top of the toothed plate is unidirectionally engaged with the outer wall of the toothed shaft, and the trapezoidal plate is slidably engaged with the sliding plate.

[0014] As another preferred technical solution of the present invention: the cross-section protection component includes a storage compartment fixedly connected to the surface of the support module. A guide disk is fixedly connected to the outer wall of the storage compartment. Multiple carriages are slidably connected in a circular array inside the guide disk. Each carriage has a clamp plate rotatably connected to its surface. A third spring is installed between each carriage and the clamp plate. A gear disk is rotatably connected to the outer wall of the guide disk. The gear disk has guide grooves that slide with the carriages. A special-shaped drive shaft that meshes with the outer wall of the gear disk is installed on the storage compartment. A door is slidably connected to the storage compartment. A gear shaft that meshes with the special-shaped drive shaft and the side of the door is rotatably connected inside the storage compartment. Dustproof cloths are installed on the multiple clamp plates.

[0015] As another preferred technical solution of the present invention: when the third spring is not twisted, the slide and the clamping plate form an obtuse angle, the middle part of the irregular transmission shaft is worm-shaped, the top of the irregular transmission shaft is conical, when the door is half closed on the storage compartment, the side of the clamping plate away from the slide abuts against the cable surface, when the door is fully closed on the storage compartment, the slide abuts against the cable surface, and at the same time the inner wall of the clamping plate is in contact with the cable surface.

[0016] The beneficial effects of the embodiments of the present invention are as follows: When too much cable is released and no longer needed, the cable reel rotates in the opposite direction on the equipment, causing the released cable to rewind onto the reel. At this time, due to the reciprocating sliding of the lead frame on the reciprocating screw, the cable will be evenly wound on the reel, avoiding the accumulation of cable on the reel caused by manual cable rewinding. When the hydraulic support feet are retracted, the rollers fall to the ground. When the equipment moves, the rollers will rotate, which will drive the rotating shaft and the reciprocating screw to rotate, releasing the cable wound on the reel. This allows the workers to lay the cable on the ground simply by moving the equipment to the pit where it needs to be laid.

[0017] When the pay-off reel is placed on top of the center support plate, it will exert downward pressure on the pressure plate. At the same time, the first spring contracts, and the hydraulic oil inside the U-shaped air groove will push the support frame to slide towards the edge of the center support plate. After the support frame slides, it will push against the inner wall of the pay-off reel, thus limiting the pay-off reel to be fixed on the equipment and preventing it from moving. Through this limiting design, the equipment can always be locked to the pay-off reel. By locking the equipment on the pay-off reel, the circular structure of the pay-off reel is broken, preventing the pay-off reel from accidentally rolling over during transportation and use and causing harm to surrounding personnel. Attached Figure Description

[0018] Figure 1This is a three-dimensional schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of the support module provided in an embodiment of the present invention; Figure 3 This is an exploded view of the support module structure provided in an embodiment of the present invention; Figure 4 This is an exploded view of the rotating component structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the overall structure of the mid-position support plate provided in an embodiment of the present invention; Figure 6 This is a cross-sectional schematic diagram of the mid-position support plate structure provided in an embodiment of the present invention; Figure 7 This is a partial exploded view of the locking component structure provided in an embodiment of the present invention; Figure 8 This is a partial cross-sectional view of the locking component structure provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the overall structure of the cross-section protection component provided in an embodiment of the present invention; Figure 10 This is an exploded view of the cross-section protection component structure provided in an embodiment of the present invention; Figure 11 This is a partial schematic diagram of the storage compartment structure provided in an embodiment of the present invention; Figure 12 This is a cross-sectional view of the overall structure provided for an embodiment of the present invention.

[0019] In the picture: 1. Support module; 2. Hydraulic support feet; 3. Rollers; 4. Rotating assembly; 5. Locking assembly; 6. Cross-section protection assembly; 11. Mid-position support plate; 12. Rear support plate; 13. Front support plate; 41. Rotating shaft; 42. Reciprocating lead screw; 43. First transmission belt; 44. Lead wire frame; 45. Second transmission belt; 46. Flexible support plate; 47. Support arm; 48. Auxiliary wheel; 49. Rotating wheel; 410. Driven shaft; 51. U-shaped air groove; 52. Pressure plate; 53. First spring; 54. Support frame; 55. Toothed shaft; 56. Toothed plate; 57. Trapezoidal plate; 58. Second spring; 59. Slide plate; 61. Storage compartment; 62. Guide plate; 63. Carriage; 64. Clamping plate; 65. Third spring; 66. Gear plate; 67. Guide groove; 68. Irregular drive shaft; 69. Gear shaft; 610. Cabin door; 611. Dustproof cloth. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] It is understood that the terms “first,” “second,” etc., used in this application may be used herein to describe various elements, but unless otherwise stated, these elements are not limited by these terms. These terms are used only to distinguish one element from another.

[0022] like Figures 1 to 4 As shown, in one embodiment, a power cable transportation device for State Grid construction is proposed, including a support module 1, hydraulic support feet 2, and rollers 3. The support module 1 includes a central support plate 11, a rear support plate 12, and a front support plate 13. The hydraulic support feet 2 are installed at the bottom of the central support plate 11, and two pairs of rollers 3 are respectively installed at the bottom of the rear support plate 12 and the front support plate 13. The device also includes: A rotating assembly 4, mounted on the rear support plate 12, allows the cable reel to rotate within the equipment. The rotating assembly 4 includes a rotating shaft 41 rotatably connected inside the rear support plate 12. A reciprocating screw 42 is rotatably connected inside the rear support plate 12 and below the rotating shaft 41. A first transmission belt 43 drives between the reciprocating screw 42 and the roller 3. A cable guide frame 44 is slidably connected to the outer wall of the reciprocating screw 42. The cable guide frame 44 is slidably connected to the rear support plate 12. A second transmission belt 45 is connected between the reciprocating screw 42 and the rotating shaft 41 on the inner wall. A flexible support plate 46 is slidably connected inside the rear support plate 12. The bottom of the flexible support plate 46 is installed on the side wall of the middle support plate 11. A rotating wheel 49 is symmetrically slidably connected on the rotating shaft 41. An auxiliary wheel 48 is rotatably connected on the opposite side of the rotating wheel 49. A support arm 47 is rotatably connected between the auxiliary wheel 48 and the top of the flexible support plate 46. A driven shaft 410 is rotatably connected on the front support plate 13. Locking component 5, mounted on the center support plate 11, is used to limit the unused pay-off reel on the equipment; The cross-section protection component 6 is installed on the mid-position support plate 11 and is used to adjust the cable laying status and seal the cable ends.

[0023] In practical application, the user controls the device to slide the rear support plate 12 and the front support plate 13 relatively close to each other on the side of the middle support plate 11. After the rear support plate 12 and the front support plate 13 are relatively close, they will exert an upward pressure on the edge of the pay-off reel, causing the pay-off reel to be lifted upward inside the device during the process of the rear support plate 12 and the front support plate 13 being relatively close, thereby making the pay-off reel suspended inside the device.

[0024] As the rear support plate 12 moves closer to the middle support plate 11, the originally horizontal part of the flexible support plate 46 slides into the interior of the rear support plate 12, causing the flexible support plate 46 to slide upward inside the rear support plate 12. During the sliding process, the flexible support plate 46 pushes the rotating wheel 49 through the support arm 47 and the auxiliary wheel 48, causing the two rotating wheels 49 to slide relatively far apart on the rotating shaft 41. When the rotating wheel 49 slides, its inclined surface will squeeze the pay-off reel, causing the pay-off reel to adhere to the rotating wheel 49 after the rotating wheel 49 finishes sliding. At this time, because the pay-off reel is respectively attached to the rotating wheel 49 and the driven shaft 410, and both the rotating wheel 49 and the driven shaft 410 are in a rotatable state, the pay-off reel can rotate on the equipment at this time.

[0025] When the pay-off reel is rotating and feeding the cable, the rotating shaft 41 will drive the reciprocating screw 42 to rotate together through the second transmission belt 45. During the rotation of the reciprocating screw 42, the lead frame 44 will slide back and forth on its surface. The cable will swing and feed under the drive of the lead frame 44. When too much cable is fed out and no longer needed, the pay-off reel will rotate in the opposite direction on the equipment, which will cause the cable that has been fed out to be rewound on the pay-off reel. At this time, because the lead frame 44 slides back and forth on the reciprocating screw 42, the cable will be evenly wound on the pay-off reel, avoiding the stacking of cable on the pay-off reel caused by manual rewinding.

[0026] When the hydraulic support foot 2 is retracted, the roller 3 falls to the ground. When the equipment is moved, the roller 3 will rotate. When the roller 3 rotates, it will drive the rotating shaft 41 and the reciprocating screw 42 to rotate, so that the cable wound on the cable reel is released. This allows the workers to lay the cable on the ground floor simply by moving the equipment to the pit where it needs to be laid.

[0027] like Figure 1 and Figure 3 As shown, in a preferred embodiment of the present invention, the rear support plate 12 and the front support plate 13 are symmetrically slidably connected on both sides of the middle support plate 11, and the roller 3 is in a suspended state when the hydraulic support foot 2 is extended.

[0028] like Figure 1 and Figure 3 As shown, in another preferred embodiment of the present invention, when the rear support plate 12 and the front support plate 13 slide to the end on both sides of the middle support plate 11, the wire feeding reel on the middle support plate 11 falls on the middle support plate 11. When the rear support plate 12 and the front support plate 13 are close to each other on both sides of the middle support plate 11, the wire feeding reel on the middle support plate 11 is suspended and the edge of the wire feeding reel is in contact with the surface of the rotating wheel 49 and the driven shaft 410.

[0029] like Figures 5 to 8As shown, in another preferred embodiment of the present invention, the locking component 5 includes a U-shaped air groove 51 symmetrically formed inside the middle support plate 11. A pressure plate 52 is vertically slidably connected to one end of the U-shaped air groove 51 near the edge of the middle support plate 11. A first spring 53 is fixedly connected between the pressure plate 52 and the middle support plate 11. A support frame 54 is horizontally slidably connected to one end of the U-shaped air groove 51 near the middle of the middle support plate 11. A toothed shaft 55 is symmetrically fixedly connected to one side of the support frame 54 near the middle of the support module 1. The toothed shafts 55 are all slidably connected inside the middle support plate 11. A toothed plate 56 that meshes with the toothed shaft 55 is slidably connected to the upper surface of the middle support plate 11. A second spring 58 is fixedly connected between the bottom of the toothed plate 56 and the middle support plate 11. A trapezoidal plate 57 is symmetrically fixedly connected to the outer wall of the toothed plate 56. A sliding plate 59 is fixedly connected to the inner wall of the rear support plate 12.

[0030] In practical application, when the pay-off reel is placed on top of the center support plate 11, the pay-off reel will exert downward pressure on the pressure plate 52. At the same time, the first spring 53 contracts, and the hydraulic oil inside the U-shaped air groove 51 will push the support frame 54 to slide towards the edge of the center support plate 11. After the support frame 54 slides, it will cause the inner wall of the pay-off reel to be pushed outward, thereby limiting the pay-off reel to be fixed on the equipment and unable to move. Through this limiting design, the equipment can always be locked to the pay-off reel. By locking the equipment on the pay-off reel, the circular structure of the pay-off reel is destroyed, preventing the pay-off reel from accidentally rolling over during transportation and use and causing harm to surrounding personnel.

[0031] As the support frame 54 slides towards the edge of the center support plate 11, the toothed shaft 55 moves together with the support frame 54. The surface of the toothed shaft 55 exerts downward pressure on the toothed plate 56, causing the second spring 58 to continuously contract and extend. Through the one-way meshing of the toothed plate 56 and the toothed shaft 55, the support frame 54 will not retract in the opposite direction after it is in contact with the inner wall of the pay-off reel. When the pay-off reel needs to rotate on the center support plate 11, the rear support plate 12 will move laterally along with the slide plate 59 as it approaches the center support plate 11. When the slide plate 59 moves, it will press down on the trapezoidal plate 57 after contacting it, causing the toothed plate 56 to slide inward into the center support plate 11, thereby releasing the meshing state between the toothed shaft 55 and the toothed plate 56. This prevents the support frame 54 from limiting the outer support of the pay-off reel. Therefore, when the rear support plate 12 approaches the center support plate 11, the pay-off reel actively changes from a limited state to a rotatable state.

[0032] like Figures 5 to 8 As shown, in another preferred embodiment of the present invention, the top of the pressure plate 52 abuts against the edge of the wire feeding reel. When the first spring 53 is not compressed, the pressure plate 52 slides out above the middle support plate 11, and the U-shaped air groove 51 is filled with hydraulic oil.

[0033] like Figure 3 and8 As shown, in another preferred embodiment of the present invention, the top of the toothed plate 56 is unidirectionally engaged with the outer wall of the toothed shaft 55, and the trapezoidal plate 57 is slidably engaged with the slide plate 59.

[0034] like Figures 9 to 12 As shown, in another preferred embodiment of the present invention, the cross-section protection component 6 includes a storage compartment 61 fixedly connected to the surface of the support module 1. A guide disk 62 is fixedly connected to the outer wall of the storage compartment 61. Multiple carriages 63 are slidably connected in a circular array inside the guide disk 62. Each carriage 63 has a clamping plate 64 rotatably connected to its surface. A third spring 65 is installed between each carriage 63 and the clamping plate 64. A gear disk 66 is rotatably connected to the outer wall of the guide disk 62. The gear disk 66 has a guide groove 67 that slides with the carriage 63. A special-shaped drive shaft 68 that meshes with the outer wall of the gear disk 66 is installed on the storage compartment 61. A hatch 610 is slidably connected to the storage compartment 61. A gear shaft 69 that meshes with the special-shaped drive shaft 68 and the side of the hatch 610 is rotatably connected inside the storage compartment 61. Dustproof cloths 611 are installed on the multiple clamping plates 64.

[0035] In practical application, when the hatch 610 is in the open state on the storage compartment 61, neither the slide 63 nor the clamp 64 comes into contact with the surface of the cable inserted inside the storage compartment 61, and the cable can move freely inside the storage compartment 61. When the hatch 610 slides to a semi-closed state on the storage compartment 61, the sliding of the hatch 610 will drive the special-shaped drive shaft 68 to rotate through the meshing of the side wall and the gear shaft 69. The rotation of the special-shaped drive shaft 68, through the meshing with the gear plate 66, causes the slide 63, which is in sliding cooperation with the guide groove 67, to slide relatively close to the inside of the guide plate 62. The torque of the third spring 65 will cause the side of the clamp 64 away from the slide 63 to abut against the cable surface, so that the cable can only be pulled out from inside the equipment, thereby avoiding the problem that the cable will automatically rewind into the cable reel when the equipment moves, making it difficult for the staff to pull it out. When the hatch 610 slides to the closed position on the storage compartment 61, the cable end is located inside the storage compartment 61. The surface of the slide 63 will abut against the outer wall of the cable, thereby limiting the cable and preventing it from being rolled up or unrolled under the clamping action of the slide 63. The dustproof cloth 611 and the hatch 610 seal the storage compartment 61, isolating the cable end inside the storage compartment 61 from the outside world, thereby avoiding the problem of the cable end being damaged by external contamination.

[0036] After the cable ends of the storage compartment 61 are sealed and limited, the staff can use the mobile device to rotate the cable reel on the equipment to tighten the cable on the reel and prevent the cable from becoming loose and causing problems such as winding and jamming during subsequent use.

[0037] like Figures 9 to 12As shown, in another preferred embodiment of the present invention, when the third spring 65 is not twisted, the slide 63 and the clamping plate 64 form an obtuse angle, the middle part of the irregular drive shaft 68 is worm-shaped, and the top of the irregular drive shaft 68 is conical. When the hatch 610 is half closed on the storage compartment 61, the side of the clamping plate 64 away from the slide 63 abuts against the cable surface. When the hatch 610 is fully closed on the storage compartment 61, the slide 63 abuts against the cable surface, and at the same time, the inner wall of the clamping plate 64 is in contact with the cable surface.

[0038] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A power cable transportation device for national power grid construction, comprising a support module (1), a hydraulic support leg (2) and a roller (3), the support module (1) comprising a middle support plate (11), a rear support plate (12) and a front support plate (13), the hydraulic support leg (2) being installed at the bottom of the middle support plate (11), and two pairs of the rollers (3) being respectively installed at the bottom of the rear support plate (12) and the front support plate (13), characterized in that, Also include: The rotating assembly (4) is installed on the rear support plate (12), which is used to make the cable reel rotatable inside the device, the rotating assembly (4) includes a rotating shaft (41) connected inside the rear support plate (12), the reciprocating screw rod (42) is connected inside the rear support plate (12) below the rotating shaft (41), the first transmission belt (43) is connected between the reciprocating screw rod (42) and the roller (3), the outer wall of the reciprocating screw rod (42) is connected with the lead frame (44), the lead frame (44) is connected with the inner wall of the rear support plate (12), the second transmission belt (45) is connected between the reciprocating screw rod (42) and the rotating shaft (41), the flexible support plate (46) is connected inside the rear support plate (12), the bottom of the flexible support plate (46) is installed on the side wall of the middle support plate (11), the rotating shaft (41) is symmetrically connected with the rotating wheel (49), the auxiliary wheel (48) is connected on the opposite side of the rotating wheel (49), the auxiliary wheel (48) and the flexible support plate (46) are connected with the support arm (47), the driven shaft (410) is connected on the front support plate (13). The locking assembly (5) is installed on the middle support plate (11), which is used to limit the unused reel on the device; The cross-section protection assembly (6) is installed on the middle support plate (11), which is used to adjust the cable laying state and seal the cable end.

2. A power cable transportation device for national grid construction as claimed in claim 1, wherein, The rear support plate (12) and the front support plate (13) are symmetrically connected on both sides of the middle support plate (11), and the roller (3) is in a suspended state when the hydraulic support leg (2) is stretched.

3. A power cable transportation device for national grid construction as claimed in claim 1, wherein, When the rear support plate (12) and the front support plate (13) slide to the end on both sides of the middle support plate (11), the reel on the middle support plate (11) falls on the middle support plate (11), when the rear support plate (12) and the front support plate (13) are close to the middle support plate (11) on both sides, the reel on the middle support plate (11) is suspended and the edge of the reel is close to the surface of the rotating wheel (49) and the driven shaft (410).

4. A power cable transportation device for national grid construction as claimed in claim 1, wherein, The locking assembly (5) includes a U-shaped air groove (51) symmetrically opened in the middle support plate (11), one end of the U-shaped air groove (51) near the edge of the middle support plate (11) is vertically and slidingly connected with a pressing plate (52), the pressing plate (52) and the middle support plate (11) are fixedly connected with a first spring (53), one end of the U-shaped air groove (51) near the middle of the middle support plate (11) is horizontally and slidingly connected with a support frame (54), the support frame (54) is symmetrically and fixedly connected with a toothed shaft (55) on one side near the middle of the support module (1), the toothed shaft (55) is slidingly connected in the middle of the middle support plate (11), the upper surface of the middle support plate (11) is slidingly connected with a toothed plate (56) engaged with the toothed shaft (55), the bottom of the toothed plate (56) and the middle support plate (11) are fixedly connected with a second spring (58), the outer wall of the toothed plate (56) is symmetrically and fixedly connected with a trapezoidal plate (57), and the inner wall of the rear support plate (12) is fixedly connected with a sliding plate (59).

5. A power cable transportation device for national grid construction as claimed in claim 4, wherein, The top of the pressing plate (52) abuts against the edge of the pay-off disc, the pressing plate (52) slides out above the middle support plate (11) in the non-pressed state of the first spring (53), and the U-shaped air groove (51) is filled with hydraulic oil.

6. A power cable transportation device for national grid construction as claimed in claim 4 wherein, The top of the toothed plate (56) is one-way clamped with the outer wall of the toothed shaft (55), and the trapezoidal plate (57) is slidingly connected with the sliding plate (59).

7. A power cable transportation device for national grid construction as claimed in claim 1, wherein, The cross-section protection assembly (6) comprises a storage bin (61) fixedly connected to the surface of the support module (1), the outer wall of the storage bin (61) is fixedly connected with a guide disc (62), a plurality of sliding frames (63) are slidingly connected in the guide disc (62) in an annular array, the surface of the sliding frame (63) is rotatably connected with a clamping plate (64), the sliding frame (63) and the clamping plate (64) are provided with a third spring (65), the outer wall of the guide disc (62) is rotatably connected with a toothed disc (66), the toothed disc (66) is provided with a guide groove (67) slidingly connected with the sliding frame (63), the storage bin (61) is provided with a special-shaped transmission shaft (68) engaged with the outer wall of the toothed disc (66), the storage bin (61) is slidingly connected with a hatch (610), the storage bin (61) is rotatably connected with a pinion shaft (69) engaged with the special-shaped transmission shaft (68) and the side edge of the hatch (610), and a plurality of clamping plates (64) are provided with dust cloths (611).

8. A power cable transportation device for national grid construction as claimed in claim 7, wherein, In the untwisted state of the third spring (65), the sliding frame (63) and the clamping plate (64) form an obtuse angle, the middle of the special-shaped transmission shaft (68) is in the shape of a worm, the top of the special-shaped transmission shaft (68) is in the shape of a bevel gear, when the hatch (610) is closed by half on the storage bin (61), the side of the clamping plate (64) away from the sliding frame (63) abuts against the surface of the cable, and when the hatch (610) is completely closed on the storage bin (61), the sliding frame (63) abuts against the surface of the cable, and the inner wall of the clamping plate (64) is attached to the surface of the cable.

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