Cable pay-off device for power construction and guiding method

Abstract

The invention relates to a cable pay-off device for power construction and a guiding method. The device comprises a device frame body of a frame structure, wire coil leading-in roller paths arranged in parallel, a sliding rail, a roller winding machine and other key components. The device is unique in design and has the capacity of adapting to cable drums with different diameters, and stable leading-in and stable parking of the cable drums are achieved through ingenious combination of the sliding rail and the supporting base. And the roller winding machine is matched with the traction belt, so that a surrounding path is formed, and efficient guiding of the cable drum is ensured. In addition, the invention further provides a method for guiding the cable drum to enter the station, the method comprises the steps of adjusting the roller path distance, fixing the traction belt, forming a surrounding path through the transition roller and the like, and it is ensured that the cable drum safely and accurately reaches the preset station. The electric power construction efficiency is improved, the operation difficulty is reduced, and remarkable economic benefits and popularization value are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power construction equipment and cable laying, and in particular to a device for lifting and guiding cable reels of different sizes into a laying-out station during cable laying in electric power engineering, and an operating method thereof. Background Art

[0002] The cable pay-off device used in power construction can support and guide the cable reel for laying operations. Traditional pay-off racks usually adopt the following designs:

[0003] 1. Center shaft design: The cable drum needs to be installed on a center shaft which is connected by an inner core shaft and an outer ring shaft through a bearing. This design has defects such as cumbersome installation and disassembly, limited bearing size selection, and high maintenance frequency.

[0004] 2. Wire reel guidance method: The wire reel needs to be hoisted to the designated position of the pay-off rack with the help of external mechanical equipment such as a crane. The operation is rough and poses a safety hazard.

[0005] 3. Lifting mechanism: Usually a screw lift or hydraulic lift system is used to lift the cable reel installed on the shaft to a suitable working height. This design requires a larger power drive and consumes more energy. At the same time, the stability of the cable reel may be affected after it is completely off the ground.

[0006] 4. Limited mobility: Although some designs include moving mechanisms, their range of movement is limited and their flexibility is insufficient.

[0007] For example, Chinese utility model patent CN220223112U discloses a pay-off stand that is easy to load and unload, and is provided with a moving mechanism, a reel lifting mechanism and a limiting mechanism to facilitate the loading and unloading and height adjustment of the wire reel.

[0008] The prior utility model patent CN213923485U of the applicant adopts the structure of stud, top pressure block and screw pressure block to fix the wire drum.

[0009] Chinese invention patent application CN117446603A discloses a wire-retracting and paying-out device for electric power construction, including a wire-retracting and paying-out assembly, a drive assembly, a guide assembly, and a wire-retracting and paying-out frame, etc. The height of the wire-retracting and paying-out frame can be adjusted and actions such as rolling and sliding out can be realized.

[0010] In summary, the existing cable pay-off devices have many deficiencies in their structural design, such as cumbersome installation and disassembly of the cable reel, hidden dangers in the guiding method, high energy consumption, poor stability, limited flexibility, etc., which restrict their practicality, safety and efficiency.

[0011] Therefore, it is necessary to thoroughly innovate the design of the traditional cable pay-off device, simplify the installation and disassembly process of the cable reel, adopt a safer and more efficient guiding method, improve the load-bearing stability of the device, enhance the mobility, and reduce energy consumption, so as to comprehensively improve its practical performance and operating efficiency. Summary of the invention

[0012] In view of this, the present invention provides an efficient, flexible and safe cable pay-off device and its guiding method, which realizes efficient introduction, stable parking and labor-saving lifting of cable reels of different specifications through innovative design, significantly improving the efficiency and economy of power construction.

[0013] The technical solution of the embodiment of the present invention is implemented as follows: A cable laying device for electric power construction, comprising:

[0014] A device frame with a frame structure; a pay-off station is provided in the lower area of ​​the device frame; two parallel arranged cable drum introduction rollers are used for rolling and introducing two cable drum bodies into the pay-off station; a slide rail is installed at the lower part of the device frame and is used for installing and guiding the two cable drum introduction rollers; a roller winder is arranged above the device frame, the traction belt width of the roller winder is not greater than the width of the cable storage section of the cable drum, and the traction belt sets a surrounding path around the cable storage section. The beneficial effect is: through a device frame with a frame structure and two cable drum introduction rollers, a simplified and efficient cable pay-off device is provided, which can adapt to cable drums of different diameters and ensure that they are smoothly introduced into the pay-off station.

[0015] As a preferred embodiment, the two cable drum introduction rollers present a consistent downwardly concave arc segment at the cable pay-off station, and the concave arc segment is used to form a stable support and parking position for the cable drum. The beneficial effect is that the specially designed downwardly concave arc segment provides a stable support and parking position in the cable drum introduction roller, enhances the stability of the cable drum at the cable pay-off station, and avoids rolling or displacement.

[0016] As a preferred embodiment, the smooth continuation of the concave arc segment is an inclined straight segment, and the straight segment presents a gentle slope from far to near relative to the device frame, which is used to guide the cable reel to smoothly roll to the parking position of the concave arc segment. The beneficial effect is that the arc segment smoothly continues to the inclined straight segment, creating a gentle slope guide path, which helps the cable reel to smoothly roll into the parking position, reduces the wear on the cable reel and the device, and improves the service life.

[0017] As a preference: the slide rail is a pair, including a first slide rail and a second slide rail, the first slide rail is arranged at the proximal end of the straight section and can be separated from the wire drum introduction raceway at any time, and the second slide rail is arranged at the distal end of the straight section and is hinged to the wire drum introduction raceway in a sleeve-jointed manner. The beneficial effect is that a pair of slide rails are respectively arranged at the proximal end and the distal end of the straight section, combined with the detachable and sleeve-jointed hinged design, to achieve convenient installation, adjustment and disassembly of the wire drum introduction raceway, thereby improving operating efficiency.

[0018] As a preferred embodiment, the two slide rails are also provided with support seats that slide and cooperate with the two slide rails, and the support seats are arranged in pairs, and each of the support seats is located on the side of the corresponding wire drum introduction track away from the center of the device frame. The beneficial effect is that the pair of support seats are arranged on the slide rails to provide support for the winding shaft, effectively disperse the load, reduce the pressure of the wire drum introduction track, prevent deformation, and at the same time improve the load-bearing capacity and stability of the entire device.

[0019] Preferably, the surrounding path includes the following arrangement:

[0020] Fix one end of the traction belt on the upper part of the device frame away from the straight section;

[0021] A first transition roller is arranged at a position relatively close to one side of the straight line segment and at two concave arc segments of the two wire drum introduction raceways;

[0022] A second transition roller is arranged at a position at the lower part of the device frame close to the connection between the straight line segment and the concave arc segment;

[0023] An active roller connected to the power source is arranged on the upper part of the device frame near the straight section. The beneficial effect is that the winding path includes a fixed end of the traction belt, a transition roller and an active roller connected to the power source, ensuring that the traction belt can smoothly wrap around the cable storage section to form a closed traction loop and optimize the power transmission efficiency.

[0024] Preferably, the traction belt forms a disconnection between the active roller and the second transition roller, and the disconnection is temporarily connected by a detachable connector. The beneficial effect is that the disconnection designed between the active roller and the second transition roller is connected by a detachable connector, so that the traction belt can be converted into a power transmission belt for lifting the wire drum into the raceway when needed, which increases the versatility of the equipment and reduces the need for additional components.

[0025] A method for guiding a cable reel into a workstation, comprising the following steps:

[0026] S1 adjusts the distance between the two cable drum introduction raceways to suit the diameter of the cable drum used;

[0027] S2 fixes one end of the traction belt on the upper part of the device frame away from the straight line section of the wire drum introduction;

[0028] S3: The traction belt is wound around the cable drum cable storage section and guided to the active roller for transmission connection therewith;

[0029] S4 uses the first transition roller and the second transition roller to make the traction belt form a surrounding path;

[0030] S5 starts the roller winder, and pulls the traction belt to move through the active roller, so that the cable reel moves along the reel introduction raceway to the starting position of the concave arc segment;

[0031] S6 reversely operates the roller winder and slowly loosens the traction belt, so that the cable drum rolls down to the center of the concave arc segment and becomes a stable parking position.

[0032] The beneficial effect is that a systematic cable reel introduction method is provided, including the steps of adjusting the introduction roller spacing, fixing the traction belt path, using transition rollers to form a surrounding path, etc., to ensure that the cable reel can reach the predetermined work station safely and efficiently.

[0033] Preferably, the traction belt forms a disconnection point between the active roller and the second transition roller, and further comprises:

[0034] temporarily connecting the traction belt at the disconnection point;

[0035] The roller winder is started, and the traction belt is used to drive the cable reel introduction raceway to rotate around the slide rail arranged at the far end of the straight section, so as to lift the cable reel by lever principle. The beneficial effect is that this method uses the lever effect between the traction belt and the slide rail to lift the cable reel, innovatively applies the mechanical advantage principle to simplify the operation process, and reduces the labor intensity and safety risks.

[0036] As a preferred embodiment, before the first transition roller and the second transition roller are used to form a looping path for the traction belt, the position of the first transition roller and the second transition roller is adjusted according to the different diameters of the cable drums used. The beneficial effect is that the step of adjusting the position of the transition roller according to the different diameters of the cable drums ensures the effective adaptability of the looping path of the traction belt, ensures that the equipment can reach the best working state under different conditions, and enhances the flexibility and accuracy of operation.

[0037] In summary, the cable pay-off device and the guiding method thereof, as a whole, have significant beneficial effects:

[0038] 1. Efficiency and flexibility: The design of the device allows the user to quickly and easily adjust the spacing of the cable drum introduction raceway to accommodate cable drums of different diameters. This enhances the versatility and adaptability of the equipment, enabling it to efficiently handle cable drums of various specifications.

[0039] 2. Stability and safety: Through the special design of arc segments and straight segments, the cable reel can be smoothly introduced and parked at the designated position. This not only reduces the possible failure and damage of the equipment during operation, but also ensures the safety of the staff.

[0040] 3. Mechanical advantage and labor saving: The device uses the principle of lever, and through the ingenious combination of traction belt and slide rail, it makes lifting the cable reel simple and efficient. This not only reduces the workload of operators, but also improves work efficiency.

[0041] 4. Precision and reliability: Through precise arrangement and adjustment, the traction belt can form an effective loop path to ensure that the cable reel can be accurately guided to the predetermined position. This not only improves work efficiency, but also ensures the quality of construction.

[0042] 5. Economical and sustainable: The design of the device and its method fully considers cost-effectiveness and sustainability. By using simple mechanical principles and fewer parts, efficient and reliable functions are achieved, and the manufacturing and maintenance costs of the equipment are reduced.

[0043] In summary, the cable pay-off device and the guiding method thereof not only improve work efficiency and safety, but also reduce costs and maintenance requirements, providing a reliable and economical solution for power construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a schematic diagram of the structure of the cable laying device used in the power construction, which is now in the state of preparing to guide the device into the laying station;

[0045] Figure 2 This is a schematic diagram of the structure of the cable laying device used in power construction, which is in the state of being guided into the laying station;

[0046] Figure 3 This is a schematic diagram of the structure of the cable laying device used in the power construction, and at this time it is in the state of moving to the laying station;

[0047] Figure 4 This is a schematic diagram of the structure of the cable pay-off device used in power construction. At this time, the cable reel enters the pay-off station and is lifted;

[0048] Figure 5 This is a schematic diagram of the structure of the cable laying device for power construction, in which the cable reel is supported by the support seat;

[0049] Figure 6 It is a schematic diagram of the structure of the cable pay-out device used in the power construction, which shows that the traction belt is disconnected;

[0050] Figure 7 It is a structural schematic diagram of the cable laying device for electric power construction, which shows a state where the cable reel is not put in.

[0051] Markings in the figure: cable reel 01, reel shaft 011, device frame 1, pay-off station 2, reel introduction raceway 3, concave arc segment 31, straight segment 32, slide rail 4, roller reel 5, traction belt 51, wrap-around path 52, first transition roller 521, second transition roller 522, active roller 523, support seat 6.

[0052] Specific technical solutions

[0053] Example 1

[0054] Refer to the attached Figure 1-7 The cable laying device for power construction includes a frame structure device frame 1. A laying station 2 is provided in the lower area of ​​the device frame 1. There are two wire reel introduction rollers 3 in the laying station 2, which extend toward the same side and exceed the device frame for a distance, and are used for rolling and introducing two reels of the cable reel 01. The two reel introduction rollers 3 are arranged in parallel, and the distance between them can be adjusted to accommodate cable reels 01 of different diameters. In order to facilitate maintaining the parallel state of the reel introduction rollers 3 and adjusting their spacing, a slide rail 4 is fixedly provided in the lower frame of the device frame 1, or the structure of the lower frame itself is used as the slide rail 4, which is used to install and guide the two reel introduction rollers 3.

[0055] When adjusting the spacing of the wire drum introduction rollers 3, one or two rollers can be slid along the slide rails 4 to change their mutual distance to meet the needs of wire drums of different specifications. The parallel arrangement of rollers is conducive to the smooth introduction of the wire drums, avoiding tilting and collision. The rollers extend to the outside of the frame, making it convenient to roll the wire drums in from the outside.

[0056] The two cable drum introduction raceways 3 present the same downwardly concave arc segments 31 at the cable pay-off station 2. The two concave arc segments 31 are used to form a stable support and parking position for the cable drum 01. The smooth continuation of the concave arc segments 31 is an inclined straight line segment 32. These straight line segments 32 present a gentle slope from far to near relative to the device frame 1, and are used to guide the cable drum 01 to roll smoothly to the parking position of the concave arc segment 31.

[0057] The design comprehensively considers the needs of the cable reel in different states such as introduction and parking, provides reliable cable reel support and guidance for cable laying operations, and improves the safety and efficiency of operations.

[0058] A roller winder 5 is arranged above the device frame 1, and the width of the traction belt 51 of the roller winder 5 is not greater than the width of the cable storage section of the cable drum 01. When working, the traction belt 51 sets a surrounding path 52 around the cable storage section. The traction belt 51 of the roller winder 5 can be used to pull the cable drum 01 to roll along the drum introduction roller 3 until it enters the parking position of the two concave arc sections 31. In this way, the process of guiding the cable drum 01 to enter the pay-off station 2 is completed.

[0059] Compared with the traditional method of transporting and placing the wire reel using external equipment such as a crane, this rolling guidance method requires much less power and is more energy-saving and environmentally friendly. The roller winder 5 applies appropriate traction to the wire reel through the traction belt 51, and utilizes the rolling of the wire reel itself and the guiding effect of the wire reel introduction raceway 3 to accurately guide the wire reel to the specified position. The process is stable and controllable, avoiding the potential safety hazards caused by rough operations such as hoisting.

[0060] This design cleverly leverages the advantages of mechanical traction and the simplicity of rolling, and is an efficient and environmentally friendly way to guide the reel.

[0061] Furthermore, two slide rails 4 are provided. The slide rail located at the proximal end of the straight section 32 is in contact with the wire drum introduction raceway 3 only due to gravity, that is, they can be separated at any time. The slide rail located at the distal end of the straight section 32 is hingedly connected to the wire drum introduction raceway 3 in a sleeve connection manner, that is, the wire drum introduction raceway 3 can slide along the slide rail.

[0062] This design allows the two cable drum introduction raceways 3 to rotate around the slide rail at the far end of the straight section 32 as a rotation axis. At this time, by applying force upward with the free end of the cable drum introduction raceway 3 as the force application point, the cable drum introduction raceway 3 forms a long force arm, thereby forming a lever mechanism. Through this lever action, the force required to lift the cable drum 01 can be greatly reduced.

[0063] The design cleverly utilizes the lever principle, and uses part of the wire drum introduced into the raceway 3 as a lever arm, thereby amplifying the applied torque and reducing the required force. At the same time, due to the free contact design of the proximal slide rail, no additional resistance is generated during the lifting process, ensuring the efficient operation of the lever mechanism. This innovative design not only reduces the burden of manual operation, but also improves the controllability and safety of the entire lifting process.

[0064] Furthermore, support seats 6 are provided on the two slide rails 4 to slide with them, and the support seats 6 are provided in pairs. Each support seat 6 is located on the side of the corresponding cable drum introduction raceway 3 away from the center of the device frame 1. When the cable drum 01 is lifted, the two support seats 6 can be pushed to the bottom of the exposed part of the reel 011 installed in the cable drum 01 to provide support for the reel 011.

[0065] This design allows the support seat 6 to be accurately moved to the supporting position below the winding shaft 011 after the wire reel is lifted to a certain height.

[0066] The support of the support seat 6 on the reel 011 can effectively reduce the load on the wire drum introduction raceway 3 and the concave arc segment 31, avoiding deformation or damage caused by excessive pressure for a long time. At the same time, the support seat 6 can reliably fix the position of the wire drum after lifting, creating a stable working environment for subsequent wire laying operations.

[0067] This design not only improves the load-bearing capacity and service life of the device, but also increases the safety of operation. It is an effective innovative technical solution.

[0068] In order to guide the cable reel 01 to the wire-releasing station 2 more smoothly, the surrounding path 52 of the traction belt 51 is set as follows:

[0069] 1. Fix one end of the traction belt 51 on the upper part of the device frame 1 away from the straight section 32;

[0070] 2. A first transition roller 521 is arranged at a position on one side of the two concave arc segments 31 of the two wire drum introduction raceway 3 and relatively close to the straight segment 32;

[0071] 3. A second transition roller 522 is provided at the lower part of the device frame 1 near the connection between the straight segment 32 and the concave arc segment 31;

[0072] 4. An active roller 523 is provided on the upper part of the device frame 1 near the straight section 32, and the active roller 523 is transmission-connected to the power source.

[0073] In practical applications, the positions of the first transition roller 521 and the second transition roller 522 need to be adaptively adjusted according to the cable reels 01 of different diameters.

[0074] The design of the loop path 52 enables the traction belt 51 to form a closed traction loop at the upper and lower parts of the device frame 1, so that the cable reel 01 can be pulled smoothly into the wire-releasing station 2. The first and second transition rollers 521, 522 are arranged so that the traction belt 51 can turn smoothly and maintain an appropriate tension to avoid slipping or breaking.

[0075] The connection between the active roller 523 and the power source provides power for the entire traction system, so that the cable drum 01 can be effectively pulled and its rolling speed can be controlled. The arrangement of the surrounding path 52 also takes into account the adaptability requirements of different drum diameters. By adjusting the position of the transition roller, the traction effect can be optimized.

[0076] This innovative design makes maximum use of the space of the device frame 1, and has a reasonable and compact layout, which not only achieves smooth and efficient cable drum guidance, but also has a certain adjustment margin.

[0077] The following describes the complete process of the cable drum 01 being guided to the wire-laying station 2 by the traction belt 51 around the path:

[0078] 1. Initial state (refer to Figure 1 ): The two reels of the cable reel 01 are respectively located at the starting points of the straight line segment 32, and the traction belt 51 is located below the reel storage section.

[0079] 2. Pull-start (refer to Figure 2 ): The traction belt 51 is connected to the active roller 523 after being wound around the cable drum storage section. The roller winder 5 is started, the traction belt 51 is tightened, and the cable drum 01 is slowly advanced along the drum introduction raceway 3.

[0080] 3. Transition roller guide (refer to Figure 3 ): When the cable reel 01 reaches between the first and second transition rollers 521 / 522, the traction belt 51 is completely tightened, and the reel just completes the straight section 32.

[0081] 4. Rolling and releasing position (refer to Figure 3 ): The cable reel 01 stops at the starting position of the concave arc segment 31 and has a tendency to roll toward the center of the concave arc. The roller winder 5 is reversed, and the traction belt 51 is slowly loosened, so that the reel slowly falls into the unwinding station 2.

[0082] 5. Unloading the traction belt: Finally, the traction belt 51 is unloaded from the active roller 523, completing the whole process of the cable reel 01 entering the pay-off station 2.

[0083] This design achieves the goal of smooth guidance and precise placement of the cable reel 01 through the carefully arranged traction belt 51 loop path and the cooperation of multiple key components such as the active roller 523 and the transition roller 521 / 522, and has the advantages of simple operation and power saving. The whole process is well controllable and safe.

[0084] Example 2

[0085] Reference Figure 6On the basis of the design of Example 1, the traction belt 51 is also fixedly connected to the other end of the active roller 523, so that the traction belt 51 forms a disconnection between the active roller 523 and the second transition roller 522. The disconnection can be temporarily connected by a detachable connection piece such as a hinge.

[0086] The advantage of this design is that when the cable reel 01 needs to be erected, a movable connector can be installed at the disconnection point to temporarily connect the traction belt 51 to the free end of the straight section 32. Then, the traction belt 51 can be rolled up by the active roller 523, and the cable reel can be lifted and introduced into the raceway 3 by using the lever principle, thereby completing the erection operation of the cable reel 01.

[0087] This innovative design gives the traction belt 51 dual functions: one is the guiding function in Embodiment 1, and the other is that it can be temporarily converted into a power transmission belt for lifting the wire drum and introducing it into the raceway 3 by means of the movable connection at the disconnection point. This design is simple and ingenious, avoids adding a new lifting mechanism, makes full use of the original traction system, realizes the integration of multiple functions, and greatly reduces the complexity and cost of the system.

[0088] At the same time, the detachable connector design also makes the assembly and disassembly of the movable connection very convenient and easy to operate, avoiding the inconvenience that may be caused by fixed connection. This design not only plays the leading role of the traction belt, but also gives it additional lifting capacity.

[0089] Example 3

[0090] According to the above two embodiments, the method of guiding the cable reel into the workstation is summarized as follows:

[0091] This method aims to guide the cable reel to the laying-out station smoothly and efficiently, with a controllable process, safety and environmental protection. It is suitable for all kinds of power construction sites and has the advantages of energy saving, environmental protection and easy operation.

[0092] Step 1: Preparation

[0093] 1) Check whether the device frame, wire drum introduction roller, slide rail and other components are intact;

[0094] 2) Adjust the spacing between the cable reel guide rollers to match the diameter of the cable reel used;

[0095] 3) Confirm that the roller winder is correctly connected to the power source;

[0096] 4) Move the two reels of the cable reel to the starting position at the far end of the straight section.

[0097] Step 2: Deployment of the traction belt

[0098] 1) Fix one end of the traction belt to the far end of the upper part of the device frame;

[0099] 2) It wraps around the wire drum storage section and guides it to the active roller for transmission connection;

[0100] 3) using the first and second transition rollers to turn the traction belt and form a surrounding path;

[0101] 4) If necessary, adjust the position of the transition roller so that the traction belt can wrap around the wire drum correctly.

[0102] Step 3: Pull-in

[0103] 1) Start the roller winder, and the active roller starts to pull the belt;

[0104] 2) The traction belt is tightened, and the cable reel moves slowly along the reel guide raceway;

[0105] 3) When the wire drum passes over the second transition roller, the traction belt will be completely tightened;

[0106] 4) Continue pulling until the wire reel stops at the starting position of the concave arc segment.

[0107] Step 4: Position the wire laying station

[0108] 1) The roller winder runs in the reverse direction and slowly loosens the traction belt;

[0109] 2) The wire drum rolls down to the center of the concave arc segment and becomes a stable stop position;

[0110] 3) Remove the traction belt from the active roller to complete the introduction process.

[0111] Step 5: Set up the cable reel (if necessary)

[0112] 1) Temporarily connect the traction belt at the disconnection point between the active roller and the second transition roller;

[0113] 2) The active roller reels the traction belt and uses the lever principle to lift the wire reel and guide it into the raceway;

[0114] 3) Move the support seat to the bottom of the reel to provide support for the reel.

[0115] This method does not require large-scale lifting equipment, and the wire reel can be automatically guided to the work station through a simple traction action. The process is safe and controllable, environmentally friendly and energy-saving, and has low power consumption. At the same time, it also integrates the lever lifting function for the erection operation of the wire reel. The entire solution is reasonably designed, easy to operate, safe and efficient.

Claims

1. A cable laying device for electric power construction, characterized in that: include: A device frame (1) having a frame structure; a wire-releasing station (2) is provided in the lower region of the interior of the device frame (1); two wire reel introduction rollers (3) arranged in parallel, used for rolling and introducing two reels of a cable reel (01) into the wire-releasing station (2); a slide rail (4) installed at the lower part of the device frame (1) and used for installing and guiding the two wire reel introduction rollers (3); a roller winder (5) is arranged above the device frame (1); the width of a traction belt (51) of the roller winder (5) is not greater than the width of a cable storage section of the cable reel (01), and the traction belt (51) sets a surrounding path (52) around the cable storage section.

2. The cable pay-off device according to claim 1, characterized in that The two cable drum introduction raceways (3) present a consistent downwardly concave arc segment (31) at the cable unwinding station (2), and the concave arc segment (31) is used to form a stable support and parking position for the cable drum (01).

3. The cable pay-off device according to claim 2 is characterized in that The smooth continuation of the concave arc segment (31) is an inclined straight segment (32), and the straight segment (32) presents a gentle slope from far to near relative to the device frame (1), and is used to guide the cable reel (01) to roll smoothly to the parking position of the concave arc segment (31).

4. The cable pay-off device according to claim 3 is characterized in that The slide rails (4) are a pair, comprising a first slide rail and a second slide rail, wherein the first slide rail is arranged at the proximal end of the straight section (32) and can be separated from the wire drum introduction raceway (3) at any time, and the second slide rail is arranged at the distal end of the straight section (32) and is hinged to the wire drum introduction raceway (3) in a sleeve-type manner.

5. The cable pay-off device according to claim 4, characterized in that The two slide rails (4) are also provided with support seats (6) that are slidably matched therewith. The support seats (6) are arranged in pairs, and each of the support seats (6) is located on a side of its corresponding wire drum introduction raceway (3) away from the center of the device frame (1).

6. The cable pay-off device according to any one of claims 1 to 5, characterized in that : The surrounding path (52) includes the following arrangement: One end of the traction belt (51) is fixed on the upper part of the device frame (1) away from the straight section (32); A first transition roller (521) is arranged at a position on one side of the two concave arc sections (31) of the two wire drum introduction raceways (3) and relatively close to the straight section (32); A second transition roller (522) is provided at a position near the connection between the straight line segment (32) and the concave arc segment (31) at the lower part of the device frame (1); A driving roller (523) connected to a power source is provided on the upper part of the device frame (1) and close to the straight line segment (32).

7. The cable pay-off device according to claim 6, characterized in that The traction belt (51) forms a disconnection point between the active roller (523) and the second transition roller (522), and the disconnection point is temporarily connected via a detachable connecting piece.

8. A method for guiding a cable reel into a workstation, characterized in that: The following steps are involved: S1 Adjust the distance between the two cable drum introduction raceways (3) to match the diameter of the cable drum (01) used; S2 fixes one end of the traction belt (51) on the upper part of the device frame (1) away from the side of the wire drum introduction straight section (32); S3: wrapping the traction belt (51) around the cable storage section of the cable drum (01) and guiding it to the active roller (523) for transmission connection therewith; S4: using the first transition roller (521) and the second transition roller (522) to make the traction belt (51) form a surrounding path (52); S5: starting the roller winder (5), pulling the traction belt (51) to move by the active roller (523), so that the cable reel (01) moves along the reel introduction raceway (3) to the starting position of the concave arc segment (31); S6: operating the roller winder (5) in reverse and slowly loosening the traction belt (51) so that the cable drum (01) rolls down to the center of the concave arc segment (31) to become a stable stop position.

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