Anti-retraction laying equipment for power cable

Abstract

The invention relates to the technical field of cable laying. The power cable anti-retraction laying equipment comprises a cable reel and further comprises two movable supports, rotating shafts, a limiting assembly, an anti-retraction assembly and a traction mechanism, universal wheels are installed at the bottoms of the movable supports, the rotating shafts are rotationally connected to the movable supports, the cable reel is detachably arranged between the two rotating shafts, and the limiting assembly is arranged on the cable reel. The limiting assembly is used for limiting the movable support, the retraction preventing assembly is used for limiting one-way rotation of the rotating shaft and comprises a ratchet wheel, a fixing block and a pawl, the ratchet wheel is coaxially and fixedly arranged outside the rotating shaft in a sleeving mode, the fixing block is connected to the movable support, the pawl is rotationally connected to the movable support, and the pawl is connected with the fixing block through a stop spring. The pawl is in contact with ratchets on the ratchet wheel, and the traction mechanism is used for pulling the power cable. By means of the technical scheme, the problem that in the prior art, in the power cable laying process, the laying precision is affected due to retraction or extension is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable laying, and in particular to an anti-retraction laying device for power cables. Background Art

[0002] In power engineering, it is necessary to lay power cables. Currently, cable reels are generally placed in specific locations, and the power cables are manually pulled to lay them in a predetermined laying direction and trajectory.

[0003] During the power cable laying process, the cable drum rotates and unwinds the power cable wound thereon. Since pulling the power cable requires a large force, after the pulling stops, part of the power cable will still be unwound due to the inertia of the cable drum, resulting in the total length of the power cable being longer. In addition, since the power cable itself has a certain elasticity, the power cable sometimes retracts, resulting in the total length of the power cable being shortened, affecting the accuracy of laying. Therefore, we have proposed an anti-retraction laying device for power cables, which can reduce the retraction phenomenon during the power cable laying process. Summary of the Invention

[0004] The present invention provides an anti-retraction laying device for power cables, which solves the problem in the prior art that the power cables may retract or stretch during the laying process, affecting the laying accuracy.

[0005] The technical solutions of the present invention are as follows:

[0006] A power cable anti-retraction laying device, comprising a cable drum and:

[0007] Two movable supports are provided, and universal wheels are installed at the bottom of each movable support;

[0008] A rotating shaft, the rotating shaft being rotatably connected to the movable support, and the cable drum being detachably disposed between two of the rotating shafts;

[0009] A limiting assembly, which is used to limit the movable support, and includes:

[0010] A lifting plate, the lifting plate can be lifted and lowered on the movable support;

[0011] A fixed plate connected to the bottom of the lifting plate via a limit spring and a telescopic rod;

[0012] An anti-retraction component, which is used to limit the one-way rotation of the rotating shaft, and includes:

[0013] A ratchet wheel, the ratchet wheel being coaxially fixedly sleeved on the outside of the rotating shaft;

[0014] A fixed block connected to the movable support;

[0015] A pawl, the pawl being rotatably connected to the movable support, the pawl being connected to the fixed block via a retaining spring, and the pawl being in contact with ratchet teeth on the ratchet wheel;

[0016] A traction mechanism, which is used to pull the power cable, and includes:

[0017] Mobile chassis;

[0018] A clamping assembly is provided on the mobile chassis and is used to clamp the power cable. The clamping assembly includes:

[0019] A fixing ring, the fixing ring being fixedly connected to the mobile chassis;

[0020] Two clamping rings are provided, and the clamping rings are movably arranged on the fixing ring.

[0021] In order to reduce the slipping phenomenon during the laying of the power cable, a stabilizing component is also included. The stabilizing component is used to maintain the stability of the power cable during the laying process. The stabilizing component includes:

[0022] A fixed seat, the fixed seat being fixedly connected to the movable support;

[0023] a fixed roller, the fixed roller being rotatably connected between the two fixed seats;

[0024] A pressing block, which is arranged on the top of the fixing seat through a pressing spring and a telescopic rod;

[0025] A pressing roller is rotatably connected between the two pressing blocks.

[0026] In order to release the one-way rotation restriction of the cable drum, a release assembly is further included, wherein the release assembly is used to release the restriction on the ratchet wheel, and the release assembly includes:

[0027] a pressure rod, the pressure rod being fixedly connected to a side of the pawl away from the ratchet;

[0028] A limiting hook is rotatably connected to the movable support, and the limiting hook is in contact with the pressure rod, and is used to limit the pressure rod after the pawl rotates to a position away from the ratchet.

[0029] In order to replace the cable drum, a disassembly assembly is further included, and the cable drum is detachably connected to the rotating shaft through the disassembly assembly, and the disassembly assembly includes:

[0030] A receiving seat, the receiving seat being fixedly connected to the rotating shaft;

[0031] A closing seat, the closing seat being detachably connected to the receiving seat, the closing seat and the receiving seat being spliced into a ring shape;

[0032] Both ends of the cable drum are fixedly connected with a support shaft, and the support shaft is located between the receiving seat and the closing seat.

[0033] To assist in laying the power cable, a drive assembly is further included, which is used to drive the cable reel to unwind. The drive assembly includes:

[0034] a driving roller, the driving roller being rotatably disposed on the movable support, the driving roller being in contact with the cable drum;

[0035] The fixed roller is in transmission connection with the driving roller.

[0036] In order to improve the limiting effect of the movable support, a limiting ring is fixedly connected to the lifting plate, and the limiting ring is in contact with the universal wheel.

[0037] The working principle and beneficial effects of the present invention are:

[0038] 1. In the present invention, the power cable is clamped by a clamping ring, the power cable is moved and laid by a movable chassis, the cable drum is rotated by a rotating shaft to unwind the power cable, and the pawl is pressed against the surface of the ratchet by a retaining spring to make the ratchet rotate in one direction, thereby achieving unidirectional rotation of the rotating shaft and the cable drum, so that the cable drum can only be unwound, thereby preventing the power cable from retracting during the laying process.

[0039] 2. In the present invention, the compression roller is driven by the compression spring to press the power cable against the surface of the fixed roller, thereby limiting the power cable and preventing the power cable from scattering during the laying process or being over-unwound due to inertia, thereby ensuring the accuracy of the power cable unwinding.

[0040] 3. In the present invention, the position of the cable reel can be moved by rotating the universal wheel, and the fixed plate and the limit ring can be driven down by the lifting plate. The limit ring contacts the universal wheel to limit the universal wheel and prevent it from rotating. The fixed plate contacts the ground to improve the stability of the movable support, so that the cable reel remains stable during the laying of power cables.

[0041] 4. In the present invention, the driving roller can drive the cable reel and the fixed roller to rotate, thereby assisting in unwinding the power cable. At the same time, by pressing the pressure rod, the pawl can be moved away from the ratchet wheel. The pressure rod is limited by the limiting hook to release the one-way rotation restriction of the ratchet wheel, so that the cable reel can rotate in the opposite direction for winding. At the same time, the reversal of the driving roller can drive the cable reel to reverse, thereby assisting in retracting the power cable into the cable reel.

[0042] 5. Therefore, compared with the power cable laying equipment in the prior art, the present invention clamps the power cable through a clamping ring, drives the power cable to move and lay it through a mobile chassis, realizes the one-way rotation of the cable drum through the cooperation of the pawl and the ratchet, and prevents the power cable from retracting. At the same time, the compression roller and the fixed roller are driven by the compression spring to limit the power cable, and prevent the power cable from being over-unwound. At the same time, the cable drum and the fixed roller are driven to rotate by the driving roller to assist in the unwinding of the power cable, and the accuracy of the power cable laying is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Figure 1 This is a schematic structural diagram of the present invention from a first viewing angle;

[0045] Figure 2 It is a structural schematic diagram of the second viewing angle of the present invention;

[0046] Figure 3 This is a schematic structural diagram of the movable support, the limiting assembly, and the disassembly assembly of the present invention;

[0047] Figure 4 It is a schematic structural diagram of the stabilizing assembly and the driving assembly of the present invention;

[0048] Figure 5 It is a structural schematic diagram of the stabilizing assembly of the present invention;

[0049] Figure 6 It is a structural schematic diagram of the cable reel of the present invention;

[0050] Figure 7 For the present invention Figure 1 Schematic diagram of the locally enlarged structure at point A in the middle.

[0051] In the picture:

[0052] 1. Cable drum; 2. Mobile support; 3. Rotating shaft; 4. Universal wheel;

[0053] 101. Lifting plate; 102. Fixed plate; 103. Adjusting screw; 104. Limiting ring;

[0054] 201, receiving seat; 202, closing seat;

[0055] 301, ratchet; 302, fixed block; 303, pawl;

[0056] 401, pressure rod; 402, limit hook;

[0057] 501, mobile chassis; 502, fixed ring; 503, clamping ring; 504, electric cylinder;

[0058] 601, fixed seat; 602, fixed roller; 603, pressing block; 604, pressing roller;

[0059] 701, driving roller; 702, motor; 703, transmission shaft. DETAILED DESCRIPTION

[0060] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0061] like Figures 1 to 7 As shown, this embodiment proposes an anti-retraction laying device for power cables, including a cable drum 1, and also includes a movable support 2, a rotating shaft 3, a limiting component, an anti-retraction component and a traction mechanism. Compared with the power cable laying device in the prior art, the present invention clamps the power cable through a clamping ring 503, drives the power cable to move and lay it through a movable chassis 501, and realizes unidirectional rotation of the cable drum 1 through the cooperation of the pawl 303 and the ratchet 301 to prevent the power cable from retracting. At the same time, the clamping roller 604 and the fixed roller 602 are driven by the clamping spring to limit the power cable to prevent the power cable from being excessively unwound. At the same time, the cable drum 1 and the fixed roller 602 are driven to rotate by the driving roller 701 to assist in the unwinding of the power cable, and the accuracy of the power cable laying is relatively high.

[0062] There are two mobile supports 2, and a universal wheel 4 is installed at the bottom of the mobile support 2. The rotating shaft 3 is rotatably connected to the mobile support 2. The cable drum 1 is detachably arranged between the two rotating shafts 3. The mobile support 2 can be moved by rotating the universal wheel 4, thereby moving the cable drum 1 to the laying position. The power cable can be unwound by rotating the cable drum 1 to complete the laying of the power cable.

[0063] The limiting assembly is used to limit the mobile support 2. The limiting assembly includes a lifting plate 101 and a fixed plate 102. The lifting plate 101 can be lifted and set on the mobile support 2. The mobile support 2 is threaded with an adjusting screw 103. The lifting plate 101 is rotatably connected to the bottom end of the adjusting screw 103. The lifting plate 101 is fixedly connected to a limiting rod. The limiting rod and the mobile support 2 are in sliding cooperation. The fixed plate 102 is connected to the bottom of the lifting plate 101 through a limiting spring and a telescopic rod. In order to improve the limiting effect of the mobile support 2, a limiting ring 104 is fixedly connected to the lifting plate 101. The limiting ring 104 is in contact with the universal wheel 4. By rotating the adjusting screw 103, the limiting ring 104 can be fixedly connected to the lifting plate 101. The lifting plate 101 is driven to rise and fall, and the lifting plate 101 drives the fixed plate 102 to descend and contact the ground. The lifting plate 101 drives the limiting ring 104 to descend and contact the edge of the universal wheel 4. There is a large sliding damping between the universal wheel 4 and the limiting ring 104, which can limit the universal wheel 4 to prevent it from rotating. When the fixed plate 102 contacts the ground, the limiting ring 104 has not yet contacted the universal wheel 4. When the limiting ring 104 and the universal wheel 4 are pressed tightly, the limiting spring is compressed, pressing the fixed plate 102 to the ground. The bottom end of the fixed plate 102 is provided with anti-slip grooves, which further improves the stability of the movable support 2 and prevents the cable reel 1 from moving during the unwinding process.

[0064] In order to replace the cable drum 1, it also includes a disassembly assembly component. The cable drum 1 is detachably connected to the rotating shaft 3 through the disassembly assembly component. The disassembly assembly component includes a receiving seat 201 and a closing seat 202. The receiving seat 201 is fixedly connected to the rotating shaft 3. The closing seat 202 is detachably connected to the receiving seat 201. The closing seat 202 and the receiving seat 201 are two opposite semi-annular shapes. The closing seat 202 and the receiving seat 201 are spliced into a ring shape. Both ends of the cable drum 1 are fixedly connected to a support shaft. The support shaft is located between the receiving seat 201 and the closing seat 202. After the power cable on the cable drum 1 is completely unwound, the cable drum 1 needs to be rewound. The reel 1 is replaced. At this time, the receiving seat 201 is rotated to the position where the opening is facing upward. The closing seat 202 is connected to the receiving seat 201 by bolts. Loosen the bolts to remove the closing seat 202 from the receiving seat 201. The support shaft can be removed from the inside of the receiving seat 201, and then the support shaft on the new cable reel 1 is placed inside the receiving seat 201 through the lifting equipment. The closing seat 202 and the receiving seat 201 are connected by bolts. Anti-slip pads are provided on the inner walls of the closing seat 202 and the receiving seat 201. The support shaft is clamped so that the support shaft can rotate with the receiving seat 201 and the rotating shaft 3.

[0065] The anti-retraction component is used to limit the unidirectional rotation of the rotating shaft 3. The anti-retraction component includes a ratchet 301, a fixed block 302 and a pawl 303. The ratchet 301 is coaxially fixed on the outside of the rotating shaft 3, the fixed block 302 is connected to the movable support 2, and the pawl 303 is rotatably connected to the movable support 2. The pawl 303 is connected to the fixed block 302 through a retaining spring. The pawl 303 contacts the ratchet teeth on the ratchet 301. Under the action of the retaining spring, the pawl 303 is pressed against the surface of the ratchet 301, causing the ratchet 301 to rotate unidirectionally, that is, in the unwinding direction of the cable drum 1, to avoid retraction of the power cable during laying and ensure the laying progress.

[0066] The limit hook 402 is rotatably connected to the movable support 2, and the limit hook 402 contacts the pressure rod 401, which is used to limit the pressure rod 401 after the pawl 303 rotates to a position away from the ratchet 301. When the power cable needs to be reeled in or other situations require the cable drum 1 to rotate in the opposite direction, the operator presses the pressure rod 401 and then rotates the limit hook 402 to rotate its bent position to above the pressure rod 401, which can limit the pressure rod 401, thereby making the pawl 303 away from the ratchet 301, releasing the limit on the ratchet 301, and allowing the ratchet 301, the rotating shaft 3 and the cable drum 1 to rotate freely.

[0067] The traction mechanism is used to pull the power cable. The traction mechanism includes a mobile chassis 501 and a clamping assembly. The clamping assembly is arranged on the mobile chassis 501 and is used to clamp the power cable. The clamping assembly includes a fixed ring 502 and a clamping ring 503. The fixed ring 502 is fixedly connected to the mobile chassis 501. There are two clamping rings 503. The clamping ring 503 is movably arranged on the fixed ring 502. Two electric cylinders 504 are installed on the fixed ring 502. The clamping rings 503 and the electric cylinders 504 correspond to each other one by one. The clamping ring 503 is fixedly connected to the output end of the electric cylinder 504. The electric cylinder 504 can drive the two clamping rings 503 to close to each other. Nearly, the end of the power cable is clamped, and an anti-slip pad is fixedly connected to the inner wall of the clamping ring 503 to ensure the clamping of the power cable. The mobile chassis 501 is an existing technology well known to those skilled in the art. A robot mobile chassis 501 can be selected to drive the fixed ring 502 and the clamping ring 503 to move, thereby driving the power cable to move, and controlling the mobile chassis 501 to move along the trajectory of laying the power cable. The operator can set a limit ring 104 at the inflection point of the power cable, and the power cable passes through the limit ring 104, so that the power cable is bent here and the power cable can pass through the limit ring 104 smoothly for subsequent laying, thereby realizing the laying of the power cable.

[0068] In order to reduce the slipping phenomenon during the laying of power cables, a stabilizing component is also included. The stabilizing component is used to maintain the stability of the power cables during the laying process. The stabilizing component includes a fixed seat 601, a fixed roller 602, a pressing block 603 and a pressing roller 604. The fixed seat 601 is fixedly connected to the movable support 2, the fixed roller 602 is rotatably connected between the two fixed seats 601, the pressing block 603 is arranged on the top of the fixed seat 601 through a pressing spring and a telescopic rod, and the pressing roller 604 is rotatably connected between the two pressing blocks 603. During the operation, the pressing roller 604 is moved close to the fixed roller 602 under the action of the pressing spring, and the power cable is located between the fixed roller 602 and the pressing roller 604. The fixed roller 602 and the pressing roller 604 limit the power cable to prevent the power cable from falling off, so that the power cable between the clamping ring 503 and the fixed roller 602 and the power cable between the fixed roller 602 and the cable drum 1 have a certain tension. At the same time, the fixed roller 602 connects the two movable supports 2 to prevent the cable drum 1 from falling off from between the two movable supports 2.

[0069] To assist in laying the power cable, it also includes a driving assembly, which is used to drive the cable drum 1 to unwind. The driving assembly includes a driving roller 701, which is rotatably arranged on the movable support 2, and a motor 702 is installed on the movable support 2. The driving roller 701 is fixedly connected to the output end of the motor 702, and the driving roller 701 is in contact with the cable drum 1. The fixed roller 602 and the driving roller 701 are transmission-connected, and the movable support 2 is rotatably connected with a transmission shaft 703. The transmission shaft 703 and the driving roller 701 are both coaxially fixed with a sprocket, and the two sprockets are connected by a chain transmission. The fixed roller 602 and the transmission shaft 703 are both coaxially fixed with a gear, and the two gears are meshed, and the driving roller 701 can be driven to rotate by the motor 702. The outer fixed sleeve of the driving roller 701 is equipped with an anti-slip pad, which can drive the cable drum 1 to rotate in the unwinding direction, so that the power cable is detached from the cable drum 1, and the rotation directions of the driving roller 701 and the cable drum 1 are opposite. The sprocket chain drives the transmission shaft 703 and the driving roller 701 to rotate synchronously. The fixed roller 602 and the transmission shaft 703 rotate in opposite directions under the action of the gear. The fixed roller 602 and the cable drum 1 rotate in the same direction to assist in unwinding the power cable. At the same time, the gear ratio between the two sprockets and the gear ratio between the two gears are tested to make the rotation speed of the fixed roller 602 equal to or slightly greater than the rotation speed of the cable drum 1, so as to avoid the cable drum 1 unwinding the power cable too fast, causing the power cable to loosen between the cable drum 1 and the fixed roller 602. The driving roller 701 only plays the role of assisting unwinding, and the driving force is not very large. The main role played by the traction mechanism on the power cable is the traction of the power cable. At the same time, when reeling, the pressure rod 401 is pressed down, and the limit hook 402 is used to limit the pressure rod 401. The motor 702 drives the driving roller 701 to reverse, which can assist the cable drum 1 in rewinding the power cable.

[0070] The working principle or use process of the power cable anti-retraction laying equipment is as follows:

[0071] Install the cable drum 1 between the two rotating shafts 3, move the cable drum 1 to the starting position for laying via the universal wheel 4, rotate the adjusting screw 103 to drive the lifting plate 101 downward, so that the limiting ring 104 is pressed against the surface of the universal wheel 4, and the fixing plate 102 is pressed against the ground under the action of the limiting spring, thereby fixing the movable support 2;

[0072] The end of the power cable passes through the fixed roller 602 and the pressure roller 604 and is placed inside the fixed ring 502. The electric cylinder 504 drives the clamping ring 503 to clamp the power cable. The movable chassis 501 drives the fixed ring 502 and the clamping ring 503 to move, and the power cable is laid.

[0073] During the laying process, the retaining spring presses the pawl 303 against the surface of the ratchet 301, causing the ratchet 301 and the rotating shaft 3 to rotate in one direction, causing the cable drum 1 to unwind in one direction, thus preventing the power cable from retracting. At the same time, the driving roller 701 rotates, assisting the cable drum 1 and the fixed roller 602 to rotate, thus reducing the work done by the mobile chassis 501.

[0074] After the single-roll cable reel 1 is laid, the closing seat 202 is removed from the receiving seat 201, and the cable reel 1 can be taken out from the inside of the receiving seat 201. The support shaft on the new cable reel 1 is placed between the two receiving seats 201, and the closing seat 202 is connected to the receiving seat 201 to limit the cable reel 1, and the subsequent power cable laying can be carried out.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A power cable anti-retraction laying device, comprising a cable drum (1), characterized in that: Also includes: A movable support (2), wherein two movable supports (2) are provided, and a universal wheel (4) is installed at the bottom of the movable support (2); A rotating shaft (3), the rotating shaft (3) being rotatably connected to the movable support (2), and the cable drum (1) being detachably arranged between two of the rotating shafts (3); A limiting component, the limiting component is used to limit the position of the movable support (2); An anti-retraction component, the anti-retraction component is used to limit the one-way rotation of the rotating shaft (3), and the anti-retraction component comprises: A ratchet (301), the ratchet (301) being coaxially fixedly sleeved on the outside of the rotating shaft (3); A fixed block (302), the fixed block (302) being connected to the movable support (2); A ratchet (303), the ratchet (303) being rotatably connected to the movable support (2), the ratchet (303) being connected to the fixed block (302) via a retaining spring, the ratchet (303) being in contact with ratchet teeth on the ratchet wheel (301); A traction mechanism is used to pull the power cable.

2. The anti-retraction laying equipment for power cables according to claim 1, characterized in that: The limiting component comprises: A lifting plate (101), the lifting plate (101) being arranged on the movable support (2) in a liftable manner; A fixed plate (102), wherein the fixed plate (102) is connected to the bottom of the lifting plate (101) via a limit spring and a telescopic rod.

3. The anti-retraction laying equipment for power cables according to claim 2, characterized in that: The traction mechanism comprises: Mobile chassis (501); A clamping assembly, the clamping assembly is arranged on the mobile chassis (501) and is used to clamp the power cable, the clamping assembly comprising: A fixing ring (502), wherein the fixing ring (502) is fixedly connected to the mobile chassis (501); A clamping ring (503), wherein two clamping rings (503) are provided, and the clamping ring (503) is movably provided on the fixing ring (502).

4. The anti-retraction laying equipment for power cables according to claim 3, characterized in that: It also includes a stabilizing component, which is used to maintain the stability of the power cable during laying, and the stabilizing component includes: A fixed seat (601), wherein the fixed seat (601) is fixedly connected to the movable support (2); A fixed roller (602), the fixed roller (602) being rotatably connected between the two fixed seats (601); A pressing block (603), wherein the pressing block (603) is arranged on the top of the fixing seat (601) via a pressing spring and a telescopic rod; A pressing roller (604), wherein the pressing roller (604) is rotatably connected between the two pressing blocks (603).

5. The anti-retraction laying equipment for power cables according to claim 4, characterized in that: It also includes a limit release component, which is used to release the limit on the ratchet (301), and the limit release component includes: A pressure rod (401), the pressure rod (401) being fixedly connected to a side of the pawl (303) away from the ratchet wheel (301); A limiting hook (402), wherein the limiting hook (402) is rotatably connected to the movable support (2), and the limiting hook (402) is in contact with the pressure rod (401), and is used to limit the pressure rod (401) after the pawl (303) rotates to a position away from the ratchet wheel (301).

6. The anti-retraction laying equipment for power cables according to claim 5, characterized in that: It also comprises a disassembly assembly component, through which the cable drum (1) is detachably connected to the rotating shaft (3), and the disassembly assembly component comprises: A receiving seat (201), wherein the receiving seat (201) is fixedly connected to the rotating shaft (3); A closing seat (202), the closing seat (202) being detachably connected to the receiving seat (201), the closing seat (202) and the receiving seat (201) being spliced ​​into a ring shape; Both ends of the cable drum (1) are fixedly connected to support shafts, and the support shafts are located between the receiving seat (201) and the closing seat (202).

7. The anti-retraction laying equipment for power cables according to claim 6, characterized in that: It also includes a driving assembly, which is used to drive the cable drum (1) to unwind, and the driving assembly includes: a driving roller (701), the driving roller (701) being rotatably disposed on the movable support (2), the driving roller (701) being in contact with the cable drum (1); The fixed roller (602) and the driving roller (701) are transmission-connected.

8. The anti-retraction laying equipment for power cables according to claim 7, characterized in that: A limit ring (104) is fixedly connected to the lifting plate (101), and the limit ring (104) is in contact with the universal wheel (4).

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