Cable laying device used in cable trench and cable laying method

Abstract

The invention discloses a cable laying device used in a cable trench and a cable laying method, and the device comprises a traction device which comprises a device main body and a traction rope, the traction rope comprises a fixed end and a free end which are opposite, the fixed end is connected with the device main body, and the traction rope can be winched through the device main body; and the transfer trolley is connected with the free end, and the transfer trolley can drive the free end to transfer in the cable trench, so that the traction rope is lifted to be long. When cable laying operation is carried out, traction steel wires do not need to be laid in advance along a cable trench, equipment installation and operation only need to be carried out at the position where cables need to be laid, constructors do not need to carry out positioning, fixing and tensioning operation on a large number of steel wires in a limited and complex cable trench space, manpower and time are saved, and the construction efficiency is improved. And the workload in the construction process is greatly reduced. As a large number of traction steel wires are not needed, huge material consumption caused by matching of the length of the steel wires and the laying length of the cable is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of cable laying, and in particular to a cable laying device and a cable laying method used in a cable trench. Background Art

[0002] Trench laying is a crucial cable installation structure in numerous fields involving cable laying, such as power engineering and telecommunications. Currently, the traditional method commonly used for trench cable laying is as follows: cable supports are pre-installed within the cable trench, and traction wires are laid simultaneously. During subsequent cable laying operations, these pre-laid traction wires are used to pull the cable, completing its installation within the trench.

[0003] However, this traditional laying method has significant limitations in practical applications:

[0004] High workload and low efficiency: This method requires a dedicated traction wire to be pre-installed on the bracket for each planned cable. This means that there is a strict one-to-one correspondence between cable installation locations and traction wires. When a large number of cables need to be laid in the trench, a large number of traction wires must be pre-laid, consuming significant labor and time.

[0005] High material costs: The length of the traction wire must match the length of the cable being laid. In practical applications, cable lengths often reach hundreds of meters or even longer. The longer the cable, the longer the traction wire required. The use of large quantities of long-distance traction wire leads to a significant increase in material costs.

[0006] In summary, the traditional cable trenching method, which relies on a large number of pre-laid traction wires, has significant shortcomings in both construction workload and material costs. Therefore, there is an urgent need to develop a more efficient and economical cable laying technology to overcome these shortcomings of existing methods. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a cable laying device and a cable laying method for use in a cable trench, so as to improve the efficiency of cable laying and reduce the cost.

[0008] In order to solve the above technical problems, the present invention provides a cable laying device for use in a cable trench, comprising:

[0009] A traction device comprises a device body and a traction rope, wherein the traction rope has a fixed end and a free end, the fixed end is connected to the device body, and the device body is used to hoist the traction rope;

[0010] The transfer vehicle is connected to the free end of the traction rope and is used to drive the free end to move in the cable trench so as to lengthen the traction rope.

[0011] Preferably, the free end of the traction rope is provided with a cable connector, and the cable connector is used to fix the cable.

[0012] Preferably, the cable connector specifically includes a detachably connected clamping head and an adapter, the clamping head is used to clamp the end of the cable, and the adapter is fixed to the free end of the traction rope.

[0013] Preferably, the adapter is provided with a plug-in slot and a retaining ring, the retaining ring is located on the notch side of the plug-in slot and has a notch on its inner circumference;

[0014] The outer periphery of the clamping head is provided with a limiting protrusion;

[0015] The limiting protrusion extends into the plug-in slot through the notch, and achieves dislocation locking through relative rotation between the clamping head and the adapter.

[0016] Preferably, a clamping groove is provided on one side of the retaining ring close to the bottom of the plug-in groove, and the clamping groove is staggered with the notch;

[0017] The limiting protrusion extends into the plug-in slot and is rotatably engaged in the slot.

[0018] Preferably, the traction rope specifically includes a main traction rope and at least two branch traction ropes, the main traction rope is used to connect the device body, one end of each branch traction rope is connected to the main traction rope, and the other end is connected to one of the cable connectors.

[0019] Preferably, the traction rope further includes a transfer rod, and the main traction rope and each of the branch traction ropes are respectively vertically connected to the transfer rod.

[0020] Preferably, the transfer vehicle specifically includes a vehicle body and a limit seat fixed thereon, the limit seat is provided with a through hole, the traction rope passes through the through hole, and the aperture of the through hole is smaller than the size of the cable connector provided at the free end of the traction rope.

[0021] The present invention also provides a method for laying cables in a cable trench, comprising:

[0022] Place the traction device and transfer vehicle into the cable trench from the wellhead of the cable trench;

[0023] Start the transfer vehicle and use the transfer vehicle to drive the traction rope of the traction device to move toward the location of the cable to be towed;

[0024] After the transfer vehicle and the traction rope are close to the end of the cable to be towed, connect the traction rope to the cable;

[0025] The traction device is started, and the traction cable and the transfer vehicle are moved toward the location of the device body of the traction device;

[0026] After completing the traction of this section, untie the connection between the traction rope and the cable, move the transfer vehicle and the traction device out of the cable trench, and transfer them to the next cable trench wellhead;

[0027] Repeat the above steps until the cable is laid.

[0028] Preferably, the cable laying method also includes the step of installing a cable bracket before pulling the cable, wherein the cable channel includes channel sections and trench sections connected to each other, a cable bracket is installed in each channel section, and the cable bracket is installed at the rear end of the channel section.

[0029] The implementation of the present invention has the following beneficial effects: when performing cable laying operations, there is no need to pre-lay traction wires along the cable trench, which completely eliminates the tedious process of pre-laying traction wires in traditional processes. Construction workers do not need to perform a large number of steel wire positioning, fixing and tensioning operations in narrow trenches, which greatly saves manpower and time, reduces construction complexity and safety risks; at the same time, it avoids the huge material consumption of hundreds of meters of traction wires required to match cable lengths, and only a small amount of reusable traction ropes is needed to complete the segmented traction task, greatly reducing material costs; the design of the traction rope being dynamically laid along with the transfer vehicle and automatically recovered after traction is completed significantly improves resource utilization and reduces waste. Under the premise of ensuring construction quality, the overall solution achieves efficient and economical laying of cables in the cable trench through the coordinated operation of the traction device and the transfer vehicle, providing an innovative solution for cable trench construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 The present invention is a structural schematic diagram of a cable laying device for use in a cable trench according to an embodiment of the present invention.

[0032] Figure 2 Schematic diagram of the structure of the cable trench in an embodiment of the present invention.

[0033] Figure 3 Schematic diagram of the state inside the cable trench during the laying process of an embodiment of the present invention.

[0034] Figure 4 Schematic diagram of the structure of a cable connector in an embodiment of the present invention.

[0035] Figure 5 Schematic diagram of the three-dimensional exploded structure of the cable connector in an embodiment of the present invention.

[0036] Figure 6 This is a state diagram after the traction device is connected to the cable in an embodiment of the present invention.

[0037] Figure 7 4 is a state diagram of the traction process in an embodiment of the present invention.

[0038] The accompanying drawings are marked as follows: 1. traction device; 11. device body; 12. traction rope; 121. main traction rope; 122. sub-traction rope; 123. adapter rod; 2. transfer vehicle; 21. vehicle body; 22. limit seat; 221. through hole; 3. cable connector; 31. chuck; 311. plug-in slot; 312. retaining ring; 3121. notch; 3122. slot; 32. adapter; 321. limit protrusion; 41. channel section; 42. ditch section; 5. cable; 6. cable bracket. DETAILED DESCRIPTION

[0039] The following descriptions of the various embodiments are made with reference to the accompanying drawings to illustrate specific embodiments in which the present invention may be implemented. In the description of the present invention, it should be understood that the terms "longitudinal," "length," "circumferential," "front," "rear," "left," "right," "top," "bottom," "inside," "outside," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention.

[0040] Please refer to Figure 1 As shown, the first embodiment of the present invention provides a cable laying device for use in a cable trench, comprising:

[0041] The traction device 1 includes a device body 11 and a traction rope 12. The traction rope 12 has a fixed end and a free end. The fixed end is connected to the device body 11. The device body 11 is used to hoist the traction rope 12.

[0042] The transfer vehicle 2 is connected to the free end of the traction rope 12 and is used to drive the free end to move in the cable trench so as to lengthen the traction rope 12.

[0043] From the above, it can be seen that when using the cable laying device of this embodiment to perform cable laying operations in a cable trench, there is no need to pre-lay traction steel wires along the cable trench, which saves the work of laying traction steel wires, thereby avoiding the use of a large amount of steel wires and achieving an efficient and economical paving effect.

[0044] Specifically, for easier understanding, the structure inside the cable trench is described as follows: Figure 2-3 As shown, the cable trench structure includes alternately connected trench sections 41 and trench well sections 42. That is, along the extension direction of the cable trench, a trench well section 42 is provided between every two trench sections 41. The trench sections 41 are longer than the trench well sections 42, and after construction is completed, the top sides of the trench sections 41 are generally fixed and sealed. The trench well sections 42 are provided with manhole covers that can be opened at any time. After opening the manhole covers, the trench can be entered from the wellhead of the trench well section 42 to complete the installation and maintenance of the cables 5 and related structures in the cable trench.

[0045] In order to meet the need for orderly support of the cables 5 in the cable trench, a cable bracket 6 is installed in the cable trench. Specifically, a cable bracket 6 is installed in each trench section 41; moreover, to facilitate the installation of the cable bracket 6, the cable bracket 6 is preferably installed at the end of the trench section 41 near the trench well section 42. In this way, after the cable trench construction is completed, construction personnel can easily enter the trench well section 42 and install the cable bracket 6 nearby. As an example, with the forward extension direction of the cable trench as the front, a cable bracket 6 is installed at the rear end of each trench section 41, or a cable bracket 6 is installed at the front end of each trench section 41. In this way, the cable bracket 6 is evenly arranged in the cable trench, providing balanced support for the cables 5.

[0046] Regarding the structure of the cable support 6, Figure 6 As shown, the cable support 6 is in a grid shape and is provided with a plurality of independent cable holes. When laying the cables 5, each cable 5 passes through a cable hole, so that the cable support 6 can independently support each cable 5 and separate the cables 5 to reduce mutual interference between the cables 5.

[0047] The cable laying device of this embodiment is designed based on the above-mentioned cable trench structure to implement the traction work during the process of laying the cable 5 in the cable trench.

[0048] In the specific structure, the device body 11 of the traction device 1 serves as the core component of the traction device 1, supporting and driving the traction rope 12. It has the function of hoisting the traction rope 12 and, through the built-in power mechanism and transmission system, can realize the retraction and extension operation of the traction rope 12. The traction rope 12 has a fixed end and a free end relative to each other. The fixed end is connected to the device body 11, ensuring a stable connection between the traction rope 12 and the device body 11, so that the device body 11 can effectively control the movement of the traction rope 12; the free end is used to connect to the cable 5 to achieve the purpose of pulling the cable 5. The material and strength of the traction rope 12 should meet the traction force requirements during the laying of the cable 5 to ensure that it will not break or other failures during the traction process.

[0049] The transfer vehicle 2 is connected to the free end of the traction rope 12 and is used to move the free end of the traction rope 12 within the cable trench, allowing the traction rope 12 to be smoothly extended. The transfer vehicle 2 should have good maneuverability and passability to adapt to the complex terrain and environment of the cable trench. It can move freely within the cable trench and accurately bring the free end of the traction rope 12 to the designated position, preparing for the subsequent traction of the cable 5.

[0050] In one embodiment, the traction rope 12 includes a main traction rope 121 and several branch traction ropes 122. The main traction rope 121 is connected to the device body 11, and the branch traction ropes 122 each have one end connected to the main traction rope 121 and the other end connected to the cable connector 3, so that the traction device 1 can pull multiple cables 5 at a time.

[0051] The number of sub-traction ropes 122 depends on the number of cables 5 to be pulled. When the pulling device 1 is activated, a pulling force is applied to the main traction rope 121. The main traction rope 121 evenly distributes the pulling force to each sub-traction rope 122 connected to it. Each sub-traction rope 122 then transmits the pulling force to the cable connector 3 to which it is connected. Ultimately, the pulling force is transmitted to the cables 5 through the cable connector 3, thereby achieving simultaneous traction of multiple cables 5.

[0052] During the traction process, the main traction rope 121 plays a leading role, transmitting the power generated by the traction device 1 to each sub-traction rope 122. The sub-traction ropes 122 act like "arms," transmitting the pulling force to the corresponding cables 5, enabling the multiple cables 5 to move synchronously. The sub-traction ropes 122 work independently but also in coordination to complete the traction task of the multiple cables 5.

[0053] Compared to the traditional method of pulling cables 5 one by one, the traction rope 12 structure can pull multiple cables 5 at once, greatly shortening the time required to lay the cables 5. This efficiency improvement is particularly significant in large-scale cable 5 laying projects, significantly shortening the construction period and reducing construction costs. Since multiple cables 5 are pulled at once, repeated operations such as installing and removing the traction device 1 and connecting components are avoided, reducing the workload and labor intensity of construction personnel, and improving the consistency and efficiency of construction.

[0054] In one embodiment, the traction rope 12 further includes a transfer rod 123 , and the main traction rope 121 and the sub-traction rope 122 are respectively vertically connected to the transfer rod 123 .

[0055] When the traction device 1 applies tension to the main traction rope 121, the tension is directly transmitted to the transfer rod 123 through a vertical connection. The transfer rod 123 serves as an intermediate transition component, uniformly distributing the tension transmitted from the main traction rope 121 to each sub-traction rope 122. Each sub-traction rope 122 then transmits the tension to the cable connector 3 connected to it, ultimately achieving simultaneous traction of multiple cables 5.

[0056] Among them, since the main traction rope 121 and the sub-traction rope 122 are vertically connected to the transfer rod 123, during the traction process, the transfer rod 123 can maintain a relatively stable stress state, and the tension borne by each sub-traction rope 122 forms a balanced force system on the transfer rod 123, so that the transfer rod 123 will not deflect or twist due to uneven force. At the same time, by reasonably designing the size and strength of the transfer rod 123, it can be ensured that the tension distributed to each sub-traction rope 122 meets the requirements of cable 5 traction.

[0057] In one embodiment, the transfer vehicle 2 includes a vehicle body 21 and a limiting seat 22 fixed on the vehicle body 21. The limiting seat 22 is provided with a plurality of through holes 221 corresponding one to one with the sub-traction ropes 122. Each of the sub-traction ropes 122 passes through a through hole 221 respectively, and the aperture of the through hole 221 is smaller than the size of the cable connector 3, so that when the cable connector 3 abuts against the limiting seat 22 during the process of pulling the cable 5, the cable connector 3 can push the transfer vehicle 2 to transfer.

[0058] Among them, the transfer vehicle 2 is provided with a driving mechanism, which can realize autonomous walking. Therefore, when the traction rope 12 is lengthened, the transfer vehicle 2 can be controlled to start running by electric means. The transfer vehicle 2 moves along a predetermined path, and the limit seat 22 on the vehicle body 21 moves accordingly. Under the guidance of the through hole 221, the traction rope 12 is gradually lengthened as the transfer vehicle 2 moves.

[0059] When the cable 5 is pulled back, the cable 5 is pulled back to the ditch section 42, and the cable 5 is pulled back to the ditch section 42.

[0060] For example Figure 4 、 Figure 5 As shown, in one embodiment, the free end is connected to a cable connector 3 , and the cable connector 3 is used to fix the cable 5 so that the traction device 1 can traction the cable 5 .

[0061] The design of cable connector 3 allows construction workers to quickly connect and disconnect cables 5 from the connector. Compared to traditional connection methods, this eliminates the need for complex welding and tying operations, significantly reducing construction time. Specifically, the simple operation of cable connector 3 makes it well suited to the complex and limited space found in cable trenches. Construction workers can easily install and remove the connector within the narrow trench, improving construction efficiency.

[0062] During the laying process of the cable 5, the cable 5 is subjected to various forces such as traction and friction. If the connection is not reliable, the cable 5 may easily separate from the traction rope 12. However, this embodiment effectively prevents the connection from loosening through the cable connector 3. For example, the locking bolt, thread tightening, and tightening mechanism ensure that the connector will not loosen easily under stress, ensuring a safe traction process.

[0063] In one embodiment, referring to Figure 4-Figure 5 The cable connector 3 includes a detachably connected clamping head 31 and an adapter 32, wherein the clamping head 31 is used to clamp the end of the cable 5, and the adapter 32 is fixed to the free end.

[0064] The adapter 32 and the clamping head 31 are connected in a detachable manner. Common connection methods are plug-in or snap-on. The plug-in connection is usually designed with a guide structure and a positioning pin at the connection end of the adapter 32 and the clamping head 31 to ensure that the two can be accurately docked; the snap-on connection achieves quick connection and disassembly through the cooperation of the snap and the slot 3122, while ensuring the stability of the connection.

[0065] When clamping the cable 5, the construction personnel select a suitable clamping head 31 module according to the specifications of the cable 5, then open the clamping arm of the clamping head 31, place the end of the cable 5 into the clamping head 31, and tightly clamp the cable 5 on the clamping head 31 by means of locking bolts, knobs or spring self-locking, ensuring that no relative sliding occurs between the cable 5 and the clamping head 31.

[0066] Before pulling the cable 5, the adapter 32 is connected to the clamping head 31. After confirming that the connection is reliable, the pulling device 1 is started. The pulling device 1 applies tension to the pulling rope 12, and the pulling rope 12 transmits the tension to the adapter 32. The adapter 32 then transmits the tension to the clamping head 31. Since the clamping head 31 has firmly clamped the cable 5, the tension is ultimately transmitted to the cable 5, driving the cable 5 to move in the cable trench, thereby achieving the laying of the cable 5. When the end of the cable 5 is pulled into the trench section 42 where the pulling device 1 is located, the adapter 32 and the clamping head 31 can be directly unlocked. The clamping head 31 remains at the end of the cable 5, facilitating a quick connection for the next pulling connection. In addition to improving the connection efficiency, this can also avoid frequent clamping operations on the cable 5, thereby avoiding damage to the cable 5.

[0067] The structure for fixing the cable 5 with the clamping head 31 can be implemented as a clamp-type structure. Specifically, it mainly consists of two clamping arms with clamping teeth, a hinge shaft, and a locking bolt. The clamping arms are usually made of high-strength alloy steel to ensure sufficient clamping force. The clamping teeth are designed to be arc-shaped to match the outer surface of the cable 5, and the surface has anti-slip grooves to increase friction with the cable 5. The hinge shaft connects the two clamping arms together, allowing the clamping arms to open and close around the hinge shaft. The locking bolt is used to fix the clamping arms in a locked state after clamping the cable 5. During use, the two clamping arms are opened, the cable 5 is placed between the clamping teeth, and then the locking bolt is tightened to gradually close the clamping arms. The clamping teeth tightly bite the cable 5, thereby achieving a reliable fixation between the cable 5 and the connector.

[0068] Another feasible connection structure is a sleeve-type connection structure. Specifically, it includes an internally threaded sleeve and two externally threaded end caps. The inner diameter of the sleeve is slightly larger than the outer diameter of the cable 5. The sleeve usually has a rubber lining inside, which acts as a buffer and seal. One end of the end cap has an external thread that matches the internal thread of the sleeve, and the other end has a connection hole for connecting to the free end of the traction rope 12. To connect, one end of the cable 5 is inserted into the sleeve, and then the two end caps are screwed onto each end of the sleeve. The tightening action of the threads causes the end caps to squeeze the rubber lining, firmly fixing the cable 5 in the sleeve. At the same time, the free end of the traction rope 12 is connected to the connection hole of the end cap.

[0069] In one embodiment, a plug-in slot 311 is provided on the adapter 32, a retaining ring 312 is provided on the notch side of the plug-in slot 311, and a notch 3121 is provided on the inner periphery of the retaining ring 312; a limiting protrusion 321 is provided on the outer periphery of the clamping head 31, and the limiting protrusion 321 can enter the plug-in slot 311 through the notch 3121; and the limiting protrusion 321 and the notch 3121 can be misaligned by the relative rotation of the adapter 32 and the clamping head 31, so that the retaining ring 312 limits the limiting protrusion 321 in the plug-in slot 311, thereby realizing the connection between the clamping head 31 and the adapter 32.

[0070] Specifically, the insertion slot 311 provided on the adapter 32 provides space for the chuck 31 to be inserted. Its shape and size are compatible with the chuck 31, ensuring smooth insertion of the chuck 31. A retaining ring 312, positioned at the notch side of the insertion slot 311, plays a key role in preventing the chuck 31 from being dislodged. The retaining ring 312 has a certain thickness and strength to withstand the outward pull of the chuck 31 when subjected to traction or other forces. A notch 3121 on the inner circumference of the retaining ring 312 serves as a passage for the chuck 31 to enter the insertion slot 311. The width and shape of the notch 3121 must match the stopper protrusion 321 on the outer circumference of the chuck 31 to ensure smooth passage of the stopper protrusion 321.

[0071] During the connection operation, the construction personnel align the clamping head 31 with the plug-in slot 311 on the adapter 32, so that the limiting protrusion 321 on the outer periphery of the clamping head 31 is aligned with the notch 3121 on the inner periphery of the retaining ring 312, and then, the clamping head 31 is inserted along the axial direction of the plug-in slot 311, and the limiting protrusion 321 smoothly enters the plug-in slot 311 through the notch 3121 until the clamping head 31 reaches the predetermined position of the plug-in slot 311. After the chuck 31 is inserted into place, the construction worker rotates the chuck 31 or the adapter 32 (usually rotating the chuck 31 is more convenient) to cause the chuck 31 and the adapter 32 to rotate relative to each other. During the rotation, the limiting protrusion 321 gradually becomes misaligned with the notch 3121. Then, the retaining ring 312 restricts the limiting protrusion 321 within the insertion groove 311. Due to the obstruction of the retaining ring 312, the chuck 31 can no longer be disengaged from the insertion groove 311 along the axial direction, thereby achieving a reliable connection between the chuck 31 and the adapter 32. When it is necessary to disassemble the chuck 31 and the adapter 32, the construction worker only needs to rotate the chuck 31 in the opposite direction to align the limiting protrusion 321 with the notch 3121 again, and then the chuck 31 can be pulled out of the insertion groove 311.

[0072] This connection method does not require complicated tools and tedious operating steps. Construction workers only need to insert the clamping head 31 into the socket 311 and complete the connection through a simple rotation action. Compared with traditional threaded connections or welding methods, it greatly shortens the connection time and improves construction efficiency. Especially in scenarios such as cable 5 laying that require quick installation and removal of connectors, this simple operation method has obvious advantages.

[0073] In one embodiment, a slot 3122 offset from the notch 3121 is provided on the bottom side of the retaining ring 312 close to the inserting slot 311 , and the limiting protrusion 321 entering the inserting slot 311 can be engaged with the slot 3122 .

[0074] Based on the structure of this embodiment, when the limiting protrusion 321 rotates to the position of the slot 3122, since the shape and size of the slot 3122 are compatible with the limiting protrusion 321, the clamping head 31 is pulled outward, and the limiting protrusion 321 will naturally be stuck in the slot 3122. After the limiting protrusion 321 is stuck in the slot 3122, the relative rotation between the clamping head 31 and the adapter 32 is limited due to the blocking effect of the slot 3122. At this time, a more stable and reliable connection is formed between the clamping head 31 and the adapter 32, which can withstand greater external forces.

[0075] Please combine again Figure 6 、 Figure 7 As shown, the working principle and process of the cable laying device of this embodiment are as follows:

[0076] 1. Initial Setup: During the cable 5 laying process, assume that the end of the cable 5 to be laid has been pulled to one of the trenches. Due to the cable support 6 in the trench section 41 connected to the trench, the pulling operation cannot be performed directly at this location. Therefore, it is necessary to move forward one trench to place the transfer vehicle 2 and the pulling device 1. The device body 11 of the pulling device 1 is directly fixed in the trench to ensure that the device body 11 remains stable during the pulling process.

[0077] 2. Laying the traction rope 12: The transfer vehicle 2 drives the traction rope 12 of the traction device 1 toward the cable 5 (i.e., backward). When the transfer vehicle 2 moves to the position of the cable support 6, it is blocked. At this time, the staff can continue to pull the traction rope 12 backward in the trench where the cable 5 is located. Since the cable support 6 is grid-shaped and has multiple independent cable threading holes, the staff passes the free end of the traction rope 12 through the appropriate cable threading hole on the cable support 6 and connects and fixes the traction rope 12 to the cable 5. This step ensures that the traction rope 12 can effectively transmit the traction force to the cable 5. At the same time, the cable support 6 is used to perform preliminary positioning and guidance of the cable 5.

[0078] 3. Pulling the cable 5: Start the pulling device 1, and use the device body 11 to apply traction to the pulling rope 12. The pulling rope 12 drives the cable 5 to overcome friction and other resistances and gradually move to the next channel well. During the pulling process, the cable holes on the cable support 6 support and separate the cables 5, reducing mutual interference between the cables 5 and ensuring that the cables 5 can pass through the channel section 41 smoothly.

[0079] 4. Equipment transfer and repeat operation: After the cable 5 is pulled to the next trench, remove the transfer vehicle 2 and the pulling device 1 and transfer them to the next trench. Repeat the above installation and pulling process, that is, fix the device body 11 again, lay the pulling rope 12, connect the cable 5, and start the pulling device 1. In this way, the cable 5 is laid in the cable trench step by step. This segmented operation can effectively overcome the obstruction of the cable support 6 and lay the cable 5 to the designated position.

[0080] In summary, the cable laying device provided in this embodiment can achieve beneficial effects: there is no need to pre-lay traction steel wires along the cable trench, and the equipment only needs to be installed and operated at the location where the cable 5 needs to be laid. Construction personnel do not need to perform a large number of steel wire positioning, fixing and tensioning operations in the limited and complex cable trench space, which saves manpower and time and greatly reduces the workload during the construction process. Since there is no need to use a large amount of traction steel wires, the huge material consumption caused by matching the length of the steel wire with the laying length of the cable 5 is avoided. This equipment only requires a small amount of traction rope 12 to complete the traction work of the cable 5. The amount of traction rope 12 used is relatively small, thereby effectively reducing the material cost. At the same time, the traction rope 12 can be reused, further improving the utilization rate of the material and reducing the project cost.

[0081] On the other hand, a second embodiment of the present invention provides a method for laying a cable 5 based on the above-mentioned cable laying device, comprising the following steps:

[0082] S1. Place the traction device 1 and transfer vehicle 2 into the cable trench from the trench opening. Ensure the equipment enters the trench smoothly and safely. Because the interior of the trench may be narrow and contain obstacles, operators must exercise caution to avoid collisions between the equipment and trench walls or other objects, which could damage the equipment or affect subsequent operations.

[0083] S2. Start the transport vehicle 2, and use the transport vehicle 2 to drive the traction rope 12 of the traction device 1 toward the position where the cable 5 to be towed is located;

[0084] S3. After the transfer vehicle 2 and the traction rope 12 are close to the end of the cable 5 to be towed, connect the traction rope 12 to the cable 5; when connecting the traction rope 12 to the cable 5, use a suitable cable connector 3, select the corresponding connector according to the specifications and type of the cable 5, and connect them according to the correct operating method. For example, for some connectors with threaded interfaces, the ends of the traction rope 12 and the cable 5 need to be accurately docked and tightened; for snap-on connectors, ensure that the snaps firmly clamp the traction rope 12 and the cable 5 to prevent them from loosening or falling off during the traction process. After the connection is completed, the operator should carefully check the connection parts to ensure that the connection is firm and reliable. You can check whether there is any looseness or abnormality in the connection by gently pulling the traction rope 12 and the cable 5.

[0085] S4. Start the traction device 1, the traction cable 5 and the transfer vehicle 2 move toward the position of the traction device 1 main body 11;

[0086] S5. After completing the traction section, untie the traction rope 12 from the cable 5, move the transfer vehicle 2 and the traction device 1 out of the cable trench, and transfer it to the next cable trench wellhead;

[0087] S6. Repeat the above steps in a loop until the laying of the cable 5 is completed.

[0088] Similarly, the cable 5 laying method provided in this embodiment eliminates the need to pre-lay traction wires along the cable trench before laying the cables 5. Equipment installation and operation only need to be performed at the location where the cables 5 are to be laid. Construction workers are no longer required to position, secure, and tension numerous wires within the limited and complex space of the cable trench, saving manpower and time and significantly reducing the workload during construction. By eliminating the need for extensive traction wires, the significant material consumption associated with matching the length of the wires to the desired length of the cables 5 is avoided.

[0089] In one embodiment, the cable bracket 6 is installed before the cable 5 is pulled, wherein the cable channel includes a channel section 41 and a trench section 42 connected to each other, and a cable bracket 6 is installed in each channel section 41, and the cable bracket 6 is installed at the rear end of the channel section 41.

[0090] Installing the cable bracket 6 in advance provides a stable support structure for the cable 5. During the pulling process of the cable 5, the cable 5 can be accurately placed on the bracket, avoiding the cable 5 from directly contacting the bottom of the channel and being worn or squeezed. The stable support can also ensure the straightness and neatness of the cable 5 after laying, reduce the deformation or damage of the cable 5 due to uneven force, and improve the quality of the laying of the cable 5.

[0091] For the working principle and process of this embodiment, please refer to the description of the aforementioned embodiment 1 of the present invention, which will not be repeated here.

[0092] Compared with the existing technology, the beneficial effect brought about by the embodiment of the present invention is that when performing cable laying operations, there is no need to pre-lay traction wires along the cable trench, which completely eliminates the tedious process of pre-laying traction wires in the traditional process. Construction workers do not need to perform a large number of steel wire positioning, fixing and tensioning operations in the narrow trench, which greatly saves manpower and time, reduces construction complexity and safety risks; at the same time, it avoids the huge material consumption of hundreds of meters of traction wires required to match the cable length, and only a small amount of reusable traction rope is needed to complete the segmented traction task, greatly reducing material costs; the design of the traction rope being dynamically laid with the transfer vehicle and automatically recovered after traction is completed significantly improves resource utilization and reduces waste. Under the premise of ensuring construction quality, the overall solution realizes the efficient and economical laying of cables in the cable trench through the coordinated operation of the traction device and the transfer vehicle, providing an innovative solution for cable trench construction.

[0093] The above disclosure is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A cable laying device for use in a cable trench, characterized in that: include: A traction device comprises a device body and a traction rope, wherein the traction rope has a fixed end and a free end, the fixed end is connected to the device body, and the device body is used to hoist the traction rope; The transfer vehicle is connected to the free end of the traction rope and is used to drive the free end to move in the cable trench so as to lengthen the traction rope.

2. The cable laying device according to claim 1, characterized in that The free end of the traction rope is provided with a cable connector, and the cable connector is used to fix the cable.

3. The cable laying device according to claim 2, characterized in that: The cable connector specifically includes a detachably connected clamping head and an adapter, the clamping head is used to clamp the end of the cable, and the adapter is fixed to the free end of the traction rope.

4. The cable laying device according to claim 3, characterized in that The adapter is provided with a plug-in slot and a retaining ring, wherein the retaining ring is located on the notch side of the plug-in slot and has a notch on its inner circumference; The outer periphery of the clamping head is provided with a limiting protrusion; The limiting protrusion extends into the plug-in slot through the notch, and achieves dislocation locking through relative rotation between the clamping head and the adapter.

5. The cable laying device according to claim 4, characterized in that A clamping groove is provided on one side of the retaining ring close to the bottom of the plug-in groove, and the clamping groove is staggered with the notch; The limiting protrusion extends into the plug-in slot and is rotatably engaged in the slot.

6. The cable laying device according to claim 2, characterized in that: The traction rope specifically includes a main traction rope and at least two branch traction ropes. The main traction rope is used to connect the device body. One end of each branch traction rope is connected to the main traction rope, and the other end is connected to one of the cable connectors.

7. The cable laying device according to claim 6, characterized in that The traction rope also includes a transfer rod, and the main traction rope and each of the branch traction ropes are respectively vertically connected to the transfer rod.

8. The cable laying device according to any one of claims 1 to 7, characterized in that: The transfer vehicle specifically includes a vehicle body and a limiting seat fixed thereon, the limiting seat is provided with a through hole, the traction rope passes through the through hole, and the aperture of the through hole is smaller than the size of the cable connector provided at the free end of the traction rope.

9. A cable laying method in a cable trench according to any one of claims 1 to 8, characterized in that: include: Place the traction device and transfer vehicle into the cable trench from the wellhead of the cable trench; Start the transfer vehicle and use the transfer vehicle to drive the traction rope of the traction device to move toward the location of the cable to be towed; After the transfer vehicle and the traction rope are close to the end of the cable to be towed, connect the traction rope to the cable; The traction device is started, and the traction cable and the transfer vehicle are moved toward the location of the device body of the traction device; After completing the traction of this section, untie the connection between the traction rope and the cable, move the transfer vehicle and the traction device out of the cable trench, and transfer them to the next cable trench wellhead; Repeat the above steps until the cable is laid.

10. The cable laying method according to claim 9, characterized in that: It also includes the step of installing a cable bracket before pulling the cable, wherein the cable channel includes a channel section and a trench section connected to each other, a cable bracket is installed in each channel section, and the cable bracket is installed at the rear end of the channel section.

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