Bridge cable laying traction device and method

Abstract

A bridge cable laying traction device comprises a cable bridge, a traction device base is arranged in the cable bridge, two crawler traction devices used for pulling a cable are arranged on the traction device base, and the pulled cable passes through the two crawler traction devices. Electric suction cups are arranged on the two sides of the traction device base, and the electric suction cups are adsorbed to the inner side wall of the cable bridge and used for fixing the traction device base in the cable bridge. In order to overcome the defects that an existing device has no anchor point and is prone to slipping when a heavy cable or an inclined bridge is pulled, the electric suckers are arranged on the two sides of the traction device base to be matched with the second telescopic parts, the traction device can be firmly adsorbed to the inner side wall of the cable bridge, and the stable anchor point is provided for the device. Even in the scenes of large mountain slope, heavy cable or inclined upward climbing of the bridge, the device displacement or wheel slipping can be avoided, and the continuous and reliable traction process is ensured.

Description

Technical Field

[0001] This invention relates to the field of cable laying technology, and in particular to a cable tray laying traction device and method. Background Technology

[0002] The Eshan photovoltaic power generation project is located on a mountain. Laying cables for a photovoltaic power station in the mountains is extremely difficult due to the steep slopes and lack of dedicated roads. While existing technologies include a cable tray laying device disclosed in patent announcement number CN119231381B, which can pull cables within the cable tray, it lacks anchor points for connection to the tray. When the pulled cable is heavy, long, or the tray is inclined upwards, the device may experience wheel slippage and fail to pull the cable. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a cable laying traction device and method for cable trays, which can stably pull the cable after fixing the traction device in the cable tray.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a cable tray laying traction device, including a cable tray, a traction device base provided inside the cable tray, and two tracked traction devices for traction of cables provided on the traction device base, the traction cable passing through the two tracked traction devices. Electric suction cups are provided on both sides of the traction device base. The electric suction cups are attached to the inner wall of the cable tray to fix the traction device base inside the cable tray.

[0005] Preferably, the base of the traction device has vertically upward sidewalls on the left and right sides, and the screw passes through the two sidewalls and is fixed with nuts; The track traction device is placed on the traction device base. The screw passes through the bottom of the track traction device and is slidably connected to the track traction device. Nuts are used on the screw to fix the track traction device.

[0006] Preferably, the upper surface of the traction device base is provided with rollers for the track traction device to slide left and right.

[0007] Preferably, the bottom of the traction device base is provided with wheels.

[0008] Preferably, guide wheels are also provided on the left and right sides of the traction device base.

[0009] Preferably, the guide wheel is connected to the first telescopic part; the electric suction cup is connected to the second telescopic part.

[0010] Preferably, the traction device base is provided with line rollers at both the front and rear ends.

[0011] Preferably, a movable frame is provided on the side wall, the movable frame including a horizontal bar and a vertical bar, and a traveling wheel that cooperates with the side wall is provided at both ends of the horizontal bar; A connecting rod is provided between the two crossbars, and a hanger is provided at the bottom of the connecting rod to which the cable is tied.

[0012] Preferably, the lower end of the boom is provided with a binding groove.

[0013] Preferably, the connecting rod has sliding sleeves at both ends, which are slidably connected to the crossbar. The crossbar has limiting holes, and the sliding sleeves are fixed by using a knob.

[0014] A method for laying and pulling cables in a cable tray includes the following steps: Step 1, device placement: Place the entire traction device into the cable tray where the cable is to be laid, and use the wheels at the bottom of the traction device base to push the device to move. At the same time, adjust the first telescopic part connected to the guide wheels on both sides of the base so that the guide wheels fit against the inner wall of the cable tray and push the device to move along the extension direction of the cable tray to the target position for cable laying. Step 2, Device Fixing: Activate the electric suction cups on both sides of the traction device base, and adjust the second telescopic part connected to the electric suction cups according to the inner width of the cable tray to make the electric suction cups tightly adhere to the inner wall of the cable tray, thus fixing the traction device base inside the cable tray. Step 3, Track traction device adjustment: Loosen the nuts on the screws on both sides of the traction device base, push the two track traction devices to slide left and right along the rollers on the upper surface of the base, adjust the distance between the two track traction devices according to the diameter of the cable to be laid, and tighten the nuts on the screws after adjustment to fix the track traction devices. Step 4, cable limiting and fixing: Loosen the knobs of the sliding sleeves at both ends of the connecting rod on the crossbar, slide the sliding sleeves so that the bottom of the connecting rod is aligned with the cable inlet of the track traction device, pass one end of the cable to be pulled through the table rollers at both ends of the base of the traction device, put it into the binding groove at the bottom of the rod and fix it with cable ties or wire, and tighten the knobs to fix the position of the sliding sleeves. Step 5, Start traction: Start the track traction device, the track rotates and drives the cable to move along the cable tray to complete the laying of a single cable; Step 6, Laying multiple cables: If multiple cables need to be laid, loosen the fixing nut of the track traction device and the knob of the connecting rod, slide the track traction device and the boom to one side, and repeat steps 3-5 to complete the subsequent cable laying in sequence.

[0015] Preferably, when the device is moved in step 1, the guide wheel is kept in contact with the inner wall of the cable tray at all times; if a corner of the cable tray is encountered, the device is pushed slowly and the extension length of the first telescopic part is adjusted in real time to ensure that the device turns smoothly and avoids rigid collision between the guide wheel and the side wall of the cable tray.

[0016] Preferably, after the electric suction cup is fixed in step 2, the adhesion is checked by manually pushing and pulling the base of the traction device. If the adhesion is not tight, the extension length of the second telescopic part is adjusted until there is no gap between the electric suction cup and the inner wall of the cable tray and the device does not move when manually pushed and pulled, so as to ensure that the adhesion force meets the standard.

[0017] Preferably, when adjusting the distance between the two track traction devices in step 3, the fit between the track and the outer wall of the cable should reach 70%-80%. The fit is determined by visually observing the contact range between the track and the cable. This ensures that the track has sufficient clamping force on the cable to avoid slippage, while also preventing indentations or damage to the cable sheath due to excessive clamping.

[0018] Preferably, after starting the track traction device in step 5, the cable traction speed and cable surface condition are monitored in real time; if cable jamming, sudden speed drop or surface wear occurs, traction is stopped immediately, and the track spacing is checked in turn to check whether the cable fixing is appropriate, whether the cable fixing is loose, and whether the device fixing is displaced. Traction is resumed only after the fault is eliminated.

[0019] Preferably, for cable trays with an inclination angle greater than 15°, after the device is fixed in step 2, an auxiliary support is added below the base of the traction device; one end of the auxiliary support is connected to the base of the traction device by bolts, and the other end is in close contact with the inner wall of the bottom of the cable tray to form a triangular support structure, thereby enhancing the anti-slip stability of the device on the inclined cable tray.

[0020] Preferably, after the cable laying is completed, the device is retrieved according to the following steps: first, turn off the power of the electric suction cup to release the suction state, then adjust the first telescopic part to shorten the extension length of the guide wheel, so that the guide wheel separates from the inner wall of the cable tray, and finally push the device along the cable tray to move to the outside of the cable tray to complete the device retrieval.

[0021] Preferably, after the device is recovered, first use a brush to clean the track surface of the track traction device, the suction surface of the electric suction cup, and the surface of the platform roller to remove dust, debris, and other impurities; then check the rotation flexibility of the wheels, guide wheels, and platform rollers, and replace or add lubricating oil to maintain severely worn or jammed parts to ensure that the device performs normally when used next.

[0022] This invention provides a cable tray laying traction device and method, which has the following beneficial effects: 1. Improve traction stability This invention addresses the shortcomings of existing devices, such as lack of anchor points and slippage when pulling heavy cables or inclined cable trays. The invention incorporates electric suction cups on both sides of the traction device base, working in conjunction with a second telescopic part, to firmly adhere to the inner wall of the cable tray, providing a stable anchor point for the device. Even in scenarios with steep slopes, heavy cables, or inclined cable trays climbing upwards, it prevents device displacement or wheel slippage, ensuring a continuous and reliable traction process.

[0023] 2. Compatible with different cables and cable trays, highly versatile. The tracked traction device on the traction device base achieves left and right sliding adjustment through a "screw + nut + roller" structure. The spacing between the two tracks can be flexibly adjusted according to the cable diameter to ensure clamping and traction effects for cables of different specifications, without the need to replace special parts. The extension length of the guide wheel and electric suction cup is adjustable to adapt to cable trays with different inner widths, eliminating the need for customized devices for specific cable trays and reducing operating costs.

[0024] 3. Facilitates device movement and positioning, and is easy to operate. The traction device is equipped with wheels at the bottom of its base, allowing it to easily move to the laying position within the cable tray. Guide wheels on both sides conform to the sidewalls of the cable tray, ensuring accurate movement and reducing friction loss between the device and the tray. The "crossbar + sliding sleeve + knob" structure allows adjustment of the positions of the connecting rod and the lifting rod. After pulling one cable at a time, the device can be laid sequentially without disassembling; simply sliding the crawler traction device and connecting rod allows for the sequential laying of multiple cables, avoiding repeated positioning and improving construction efficiency.

[0025] 4. Protect cables and reduce laying losses. The base of the traction device is equipped with rollers at both the front and rear ends. When the cable enters or exits the device, it can make rolling contact with the rollers instead of direct friction, thus reducing wear on the cable sheath. The lower end of the lifting rod of the moving frame is equipped with a binding groove, which can be used to stabilize and fix the cable with cable ties, wires, etc., to prevent the cable from shifting or shaking during traction, and further protect the integrity of the cable structure. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the traction device of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention after the movable frame has been installed; Figure 4 This is a schematic diagram of the structure of the mobile frame of the present invention; Figure 5 This is a side view of the cable being pulled according to the present invention; Figure 6 This is a perspective view of the cable being pulled according to the present invention; Figure 7 This is a schematic diagram of the structure of the present invention when pulling multiple cables. Detailed Implementation

[0027] like Figure 1-2 As shown, a cable tray laying traction device includes a cable tray 1, a traction device base 2 is provided inside the cable tray 1, and two tracked traction devices 3 for traction of cables are provided on the traction device base 2, and the traction cable passes through the two tracked traction devices 3. Electric suction cups 4 are provided on both sides of the traction device base 2. The electric suction cups 4 are attached to the inner wall of the cable tray 1 to fix the traction device base 2 inside the cable tray 1.

[0028] The invention structurally comprises a cable tray 1 serving as the working carrier, a traction device base 2 disposed within the cable tray 1, two crawler traction devices 3 mounted on the traction device base 2 for cable passage, and electric suction cups 4 disposed on both sides of the traction device base 2 and capable of adhering to the inner wall of the cable tray 1. Its working principle revolves around "anchor point fixation + crawler traction." First, the electric suction cups 4 adhering to the inner wall of the cable tray 1 provide stable mechanical anchor points to counteract the traction reaction force. Then, the large contact area friction between the two crawler traction devices 3 and the cable drives the cable to move. The working process involves placing the device into the cable tray 1 for positioning, then activating the electric suction cup 4 to fix the traction device base 2, threading the cable between the two tracked traction devices 3, and activating the tracked traction devices 3 to drive the cable along the cable tray. After completing a single section of laying, the suction cup can be released to move the device to the next position. This structural design effectively solves the defects of existing devices, such as lack of anchor points and easy slippage in scenarios with steep mountain slopes, heavy cables, or inclined cable trays. It improves the continuity and reliability of cable traction, is suitable for complex operating environments such as mountain photovoltaic projects, and is simple to operate, reducing the requirements for the work site and the threshold for personnel operation.

[0029] By using an electric suction cup to adhere to and fix the cable tray to the inner wall, a stable anchor point is provided for the traction device, solving the problems of existing devices having no anchor point, slipping when traction of heavy cables, or the cable tray tilting upwards and being unable to be pulled; the two crawler traction devices can form a stable clamp and pull on the cable, ensuring a continuous and reliable cable laying process.

[0030] Preferably, the traction device base 2 has vertically upward sidewalls 5 on the left and right sides, and the screw 6 passes through the two sidewalls 5 and is fixed by nuts 7; The track traction device 3 is placed on the traction device base 2. The screw 6 passes through the bottom of the track traction device 3 and is slidably connected to the track traction device 3. The nut 7 is used on the screw 6 to fix the track traction device 3.

[0031] The "screw + nut" structure allows for adjustable left and right positions of the track traction device on the base. The distance between the two track traction devices can be flexibly adjusted according to the diameter of the cable to be laid, ensuring effective clamping and stable traction of cables of different specifications and improving the device's adaptability to different cables.

[0032] Preferably, the upper surface of the traction device base 2 is provided with rollers 8 for the track traction device 3 to slide left and right. The rollers can convert the sliding friction between the track traction device and the base into rolling friction, which significantly reduces the resistance when adjusting the position of the track traction device, making the spacing adjustment operation smoother and less labor-intensive, while reducing the wear between the track traction device and the base and extending the service life of the components.

[0033] Preferably, the bottom of the traction device base 2 is provided with wheels 9. The wheels facilitate the movement of the entire traction device within the cable tray, allowing adjustment of the device's laying position without disassembly or the use of external tools, thus improving the flexibility of device operation and adapting to the needs of different laying points within the cable tray.

[0034] Preferably, guide wheels 10 are also provided on the left and right sides of the traction device base 2. When the device moves, the guide wheels can conform to the inner wall of the cable tray, providing guidance and ensuring that the device moves along the extension direction of the cable tray, preventing the device from shifting or jamming; at the same time, it reduces direct friction between the base sidewall and the inner wall of the cable tray, protecting the cable tray and device components. Furthermore, when fixing the traction device base, the electric suction cup generates an inward pulling force on the sidewall of the cable tray, while the guide wheels generate an outward supporting force on the sidewall of the cable tray, balancing the forces on the sidewall of the cable tray and preventing deformation.

[0035] Preferably, the guide wheel 10 is connected to the first telescopic part 11; the electric suction cup 4 is connected to the second telescopic part 12. The extension length of the guide wheel can be adjusted via the first telescopic part, and the extension length of the electric suction cup can be adjusted via the second telescopic part, allowing the device to adapt to cable trays with different inner widths. Regardless of the width of the cable tray, it can ensure that the guide wheel fits against the side wall and the electric suction cup effectively adsorbs, greatly improving the versatility of the device and eliminating the need for customization for specific cable tray specifications.

[0036] Preferably, the traction device base 2 is provided with platform rollers 22 at both the front and rear ends. When the cable enters or exits the traction device, the platform rollers can form rolling contact with the cable, replacing the direct sliding friction between the cable and the base, reducing wear on the cable sheath, protecting the integrity of the cable structure, and avoiding cable damage due to friction during laying.

[0037] Preferred, such as Figure 3 , 4 As shown, a movable frame is provided on the side wall 5. The movable frame includes a horizontal bar 13 and a vertical bar 14. At both ends of the horizontal bar 13, there are traveling wheels 15 that cooperate with the side wall 5. A connecting rod 16 is provided between the two crossbars 13, and a hanging rod 17 is provided at the bottom of the connecting rod 16 to bind the cable to the lower end of the hanging rod 17. The hanging rod can bind and limit the cable to prevent the cable from deviating or swaying during the traction process, ensuring that the cable accurately enters the two crawler traction devices and improving traction accuracy; the traveling wheels at both ends of the crossbars allow the moving frame to move synchronously along the side wall to adapt to the cable traction path, without the need for additional frame position adjustment, thus improving laying efficiency.

[0038] Preferably, the lower end of the boom 17 is provided with a binding groove 18. Cable ties, binding straps, wire, etc., can be used to bind the cable to the binding groove 18. The binding groove provides a dedicated fixing point for the cable, preventing slippage or displacement when binding the cable with cable ties, wire, etc., thus enhancing the reliability of cable fixing; at the same time, it facilitates operators to quickly locate the binding position, simplifies the binding operation process, and improves construction convenience.

[0039] Preferably, the connecting rod 16 has sliding sleeves 19 at both ends, which are slidably connected to the crossbar 13. A limiting hole 20 is provided on the crossbar 13, and a knob 21 is used to fix the sliding sleeve 19. The sliding engagement between the sliding sleeve and the crossbar allows for adjustment of the left and right positions of the connecting rod and the lifting rod, enabling flexible adjustment according to cable laying requirements (such as adjusting the spacing when laying multiple cables), adapting to single or multiple cable laying scenarios. The engagement of the knob and the limiting hole firmly fixes the position of the sliding sleeve, preventing displacement of the connecting rod during traction, ensuring stable cable positioning, and improving the flexibility and reliability of multi-cable laying.

[0040] When pulling the cable, if Figure 5 , 6 As shown, the track traction device 3 pulls the cable, which is fixed to the binding groove 18 at the lower end of the boom 17 by cable ties or binding straps, thereby limiting the cable and ensuring that the cable accurately enters the traction device. This device pulls one cable at a time. When multiple cables need to be laid in the cable tray, such as... Figure 7 As shown, the track traction device 3 and connecting rod 16 are slid to one side for traction. After one cable is tractioned, the position of the track traction device 3 and connecting rod 16 is gradually adjusted to complete the traction of subsequent cables.

[0041] The steps for using this device are as follows: 1. Installation: Move the device to the laying position inside the cable tray. The entire traction device is placed inside the cable tray 1 where the cable is to be laid, and the device is moved by the wheels 9 at the bottom of the traction device base 2. At the same time, by adjusting the first telescopic part 11 connected to the guide wheels 10 on both sides of the base, the guide wheels 10 are made to fit against the inner wall of the cable tray 1, ensuring that the device moves smoothly along the extension direction of the cable tray until the target position for cable laying is reached.

[0042] 2. Device fixing: Position is locked by an electric suction cup. Activate the electric suction cups 4 on both sides of the traction device base 2, and adjust the second telescopic part 12 connected to the electric suction cup 4 according to the inner width of the cable tray 1, so that the electric suction cup 4 is tightly attached to the inner wall of the cable tray 1, and the traction device base 2 is firmly fixed in the cable tray, so as to prevent the device from slipping or shifting during subsequent traction. This is especially suitable for inclined cable trays and heavy cable scenarios.

[0043] 3. Adjust the track traction device to match the diameter of the cable to be laid. Loosen the nuts 7 on the screws 6 on both sides of the base 2 of the traction device. Since the upper surface of the base is equipped with rollers 8, the two track traction devices 3 can be easily pushed to slide left and right along the rollers 8. Adjust the distance between the two track traction devices 3 according to the diameter of the cable to be laid to ensure that the cable can be stably clamped by the track without loosening or slipping, or squeezing and damaging the cable. After the spacing is adjusted, tighten the nut 7 on the screw 6 to fix the track traction device 3 in the current position.

[0044] 4. Cable limiting and fixing: The traction accuracy is ensured by moving the frame. The side wall 5 of the device is equipped with a movable frame including a horizontal bar 13 and a vertical bar 14. The two ends of the horizontal bar have traveling wheels 15 that fit against the side wall. Loosen the knob 21 of the sliding sleeve 19 at both ends of the connecting rod 16 on the horizontal bar 13, and slide the sliding sleeve 19 so that the hanging rod 17 at the bottom of the connecting rod 16 is aligned with the cable inlet of the track traction device 3. One end of the cable to be pulled is passed through the platform rollers 22 at both ends of the base 2 of the traction device to reduce cable friction and wear, and then placed into the binding groove 18 at the lower end of the boom 17. The cable is fixed in the binding groove 18 with cable ties, wires, etc. to limit the cable position and prevent the cable from shifting during traction. Tighten the knob 21 of the sliding sleeve 19 to fix the position of the connecting rod 16.

[0045] 5. Start traction: Complete the laying of a single cable. Start the track traction device 3. The track rotates and drives the cable to move along the cable tray 1. At the same time, the cable is guided by the limit roller 22 and the lifting rod 17 to enter the track stably and be pulled forward until the single cable is laid.

[0046] 6. Laying multiple cables: Repeated adjustments enable continuous operation. If multiple cables need to be laid in the same cable tray 1, there is no need to disassemble the device: First, loosen the fixing nut 7 of the track traction device 3 and the knob 21 of the connecting rod 16, then slide the track traction device 3 and the boom 17 to one side to complete the first cable traction; Following steps 3-5, readjust the track spacing and boom position, secure the second cable, and start traction. Repeat the above steps to complete the laying of all subsequent cables.

[0047] In practical use, a traction device can be set at certain intervals according to the diameter of the traction cable, the slope of the cable tray, etc. The number of moving frames can be more than the number of traction devices, thereby reducing the friction between the cable and the cable tray.

[0048] This invention is specifically designed for complex cable laying scenarios such as mountain photovoltaic projects. It does not rely on external auxiliary fixing structures. Through its modular and adjustable design, it balances stability, versatility and convenience, effectively solving the industry pain point of difficult cable pulling in mountain photovoltaic projects, reducing construction costs, protecting cable safety, and has strong practical value and promotion significance.

[0049] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A cable tray laying traction device, comprising a cable tray (1), characterized in that: A traction device base (2) is provided inside the cable tray (1), and two tracked traction devices (3) for traction cables are provided on the traction device base (2). The traction cable passes through the two tracked traction devices (3). Electric suction cups (4) are provided on both sides of the traction device base (2). The electric suction cups (4) are attached to the inner wall of the cable tray (1) to fix the traction device base (2) inside the cable tray (1).

2. The cable tray laying traction device according to claim 1, characterized in that: The traction device base (2) has vertically upward sidewalls (5) on the left and right sides. The screw (6) passes through the two sidewalls (5) and is fixed with nuts (7). The track traction device (3) is placed on the traction device base (2). The screw (6) passes through the bottom of the track traction device (3) and is slidably connected to the track traction device (3). The nut (7) is used on the screw (6) to fix the track traction device (3).

3. The cable tray laying traction device according to claim 2, characterized in that: The upper surface of the traction device base (2) is provided with rollers (8) for the track traction device (3) to slide left and right.

4. The cable tray laying traction device according to claim 1, characterized in that: The bottom of the traction device base (2) is provided with wheels (9).

5. The cable tray laying traction device according to claim 4, characterized in that: The traction device base (2) is also provided with guide wheels (10) on the left and right sides.

6. The cable tray laying traction device according to claim 5, characterized in that: The guide wheel (10) is connected to the first telescopic part (11); the electric suction cup (4) is connected to the second telescopic part (12).

7. The cable tray laying traction device according to claim 1, characterized in that: The traction device base (2) is provided with a platform roller (22) at both the front and rear ends.

8. A cable tray laying traction device according to claim 2 or 3, characterized in that: The side wall (5) is provided with a movable frame, which includes a horizontal bar (13) and a vertical bar (14). At both ends of the horizontal bar (13) are provided a traveling wheel (15) that cooperates with the side wall (5). A connecting rod (16) is provided between the two crossbars (13), and a hanging rod (17) is provided at the bottom of the connecting rod (16) to which the cable is tied.

9. The cable tray laying traction device according to claim 8, characterized in that: The lower end of the boom (17) is provided with a binding groove (18).

10. The cable tray laying traction device according to claim 8, characterized in that: The connecting rod (16) has sliding sleeves (19) at both ends. The sliding sleeves (19) are slidably connected to the crossbar (13). The crossbar (13) has a limiting hole (20). The sliding sleeves (19) are fixed by using a knob (21).

11. A method for laying and pulling cables in a cable tray, characterized in that, Includes the following steps: Step 1, device placement: Place the entire traction device into the cable tray (1) where the cable is to be laid, and use the wheels (9) at the bottom of the traction device base (2) to push the device to move. At the same time, adjust the first telescopic part (11) connected to the guide wheels (10) on both sides of the base so that the guide wheels (10) fit against the inner wall of the cable tray (1) and push the device to move along the extension direction of the cable tray to the target position for cable laying. Step 2, Device Fixing: Activate the electric suction cups (4) on both sides of the traction device base (2), adjust the second telescopic part (12) connected to the electric suction cup (4) according to the inner width of the cable tray (1), so that the electric suction cup (4) is tightly attached to the inner wall of the cable tray (1), and fix the traction device base (2) inside the cable tray. Step 3, track traction device adjustment: Loosen the nuts (7) on the screws (6) on both sides (5) of the traction device base (2), push the two track traction devices (3) to slide left and right along the rollers (8) on the upper surface of the base, adjust the distance between the two track traction devices (3) according to the diameter of the cable to be laid, tighten the nuts (7) on the screws (6) after adjustment, and fix the track traction devices (3). Step 4, cable limiting and fixing: Loosen the knob (21) of the sliding sleeve (19) at both ends of the connecting rod (16) on the crossbar (13), slide the sliding sleeve (19) so that the hanging rod (17) at the bottom of the connecting rod (16) is aligned with the cable inlet of the track traction device (3), pass one end of the cable to be pulled through the table rollers (22) at both ends of the traction device base (2), put it into the binding groove (18) at the lower end of the hanging rod (17) and fix it with cable ties or wire, tighten the knob (21) to fix the position of the sliding sleeve (19); Step 5, start traction: Start the track traction device (3), the track rotates and drives the cable to move along the cable tray (1) to complete the laying of a single cable; Step 6, laying multiple cables: If multiple cables need to be laid, loosen the fixing nut (7) of the track traction device (3) and the knob (21) of the connecting rod (16), slide the track traction device (3) and the boom (17) to one side, repeat steps 3-5, and complete the subsequent cable laying in sequence.

12. The cable tray laying and pulling method according to claim 11, characterized in that, When the device is moved in step 1, the guide wheel (10) is kept in contact with the inner wall of the cable tray (1). If the device is encountered at the corner of the cable tray, the device is pushed slowly and the extension length of the first telescopic part (11) is adjusted in real time to ensure that the device turns smoothly and avoids rigid collision between the guide wheel (10) and the side wall of the cable tray.

13. The cable tray laying and pulling method according to claim 1, characterized in that, After the electric suction cup (4) is fixed in step 2, check the adhesion by manually pushing and pulling the base (2) of the traction device. If the adhesion is not tight, adjust the extension length of the second telescopic part (12) until there is no gap between the electric suction cup (4) and the inner wall of the cable tray (1) and the device does not move when manually pushed and pulled, so as to ensure that the adhesion force meets the standard.

14. The cable tray laying and pulling method according to claim 1, characterized in that, When adjusting the distance between the two track traction devices (3) in step 3, the fit between the track and the outer wall of the cable should reach 70%-80%. The fit is determined by visually observing the contact range between the track and the cable. This ensures that the track has the clamping force on the cable to avoid slippage, and also avoids the cable sheath from being indented or damaged due to excessive clamping.

15. The cable tray laying and pulling method according to claim 1, characterized in that, After starting the track traction device (3) in step 5, monitor the cable traction speed and cable surface condition in real time; if the cable gets stuck, the speed drops suddenly or the sheath is worn, stop traction immediately, check in turn whether the track spacing is appropriate, whether the cable is loose and whether the device is displaced, and continue traction after troubleshooting.

16. The cable tray laying and pulling method according to claim 1, characterized in that, For cable trays with an inclination angle greater than 15°, after the device is fixed in step 2, an auxiliary support is added below the traction device base (2); one end of the auxiliary support is connected to the traction device base (2) by bolts, and the other end is in close contact with the bottom inner wall of the cable tray (1) to form a triangular support structure, which enhances the anti-slip stability of the device on the inclined cable tray.

17. The cable tray laying and pulling method according to claim 1, characterized in that, After the cable laying is completed, the device is recycled according to the following steps: first turn off the power of the electric suction cup (4) to release the suction state, then adjust the first telescopic part (11) to shorten the extension length of the guide wheel (10) so that the guide wheel (10) is separated from the inner wall of the cable tray (1), and finally push the device along the cable tray to move to the outside of the cable tray to complete the recycling of the device.

18. The cable tray laying and pulling method according to claim 7, characterized in that, After the device is recovered, first use a brush to clean the track surface of the track traction device (3), the suction surface of the electric suction cup (4), and the surface of the table roller (22) to remove dust, debris and other impurities; then check the rotation flexibility of the wheels (9), guide wheels (10) and table roller (22), replace or add lubricating oil to severely worn or stuck parts to ensure that the device performs normally when used next time.

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