Cable laying system for cable laying engineering

Abstract

The invention discloses a cable laying system for cable laying engineering, and relates to the technical field of cable laying equipment, the structure of a traction device for cable laying in the prior art is optimized and improved, and a cable is pulled to move forwards by using the contraction force of an air cylinder; when the cable is dragged, the front half part of the cable is fixed on the inner wall of the pipeline in an abutting mode so as to guarantee the dragging effect; the cable laying system for the cable laying engineering has the technical effects that the traction force is strong and the trafficability and the applicability are relatively good when the cable laying system for the cable laying engineering is used for laying cables in a pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of cable laying equipment, and in particular to a cable laying system for cable laying engineering. Background Art

[0002] Cable laying is a key step in power construction. In actual operation, the cable shaft is usually placed firmly on the ground first, and then the end of the cable is manually pulled for laying. When encountering complex situations that require crossing pipelines, in order to ensure that the cable can pass through the pipeline smoothly and accurately, small mobile vehicles or wheeled robots are usually used to assist operators in the operation; these tools and equipment can significantly improve work efficiency and reduce labor intensity and safety risks, providing important guarantees and support for project quality and progress.

[0003] Chinese invention patent CN111029971B discloses a traction device for laying cables of power supply companies. The invention realizes the clamping operation of cables of different sizes through a clamping structure. At the same time, by combining a scissor-type telescopic mechanism and a walking mechanism, the traction device can crawl in pipes of different sizes, thereby easily realizing the crawling and traction operation of cables in pipes of different sizes. The device improves work efficiency and convenience of use.

[0004] Although the above device improves the working efficiency and convenience of wiring in pipes, its traction force depends on the friction between the wheel body of the device itself and the pipe wall, and the force is relatively small. It is not strong enough to pull thicker and longer cables or lay cables in longer pipes. Moreover, due to the limitation of its own structure, it has poor applicability to the inner diameter of the pipe and relatively poor permeability.

[0005] Therefore, there is a need for a cable laying system for cable laying engineering that has strong traction when laying cables in pipelines, and relatively good passability and applicability. Summary of the invention

[0006] The embodiment of the present application provides a cable laying system for cable laying projects, thereby solving the technical problems in the prior art that the cable laying traction device has relatively poor applicability and passability and small traction force due to its own structure limitation. The cable laying system for cable laying projects achieves the technical effect of strong traction force, relatively good passability and applicability when laying cables in pipelines.

[0007] The embodiment of the present application provides a cable laying system for cable laying engineering, including a front displacement support body, a rear displacement support body fixed with a clamping clamp, a connecting telescopic rod, a pump air assembly, and a battery assembly; the structure of the front displacement support body and the rear displacement support body;

[0008] The front displacement support body comprises a transversely arranged base ring, a pneumatic telescopic rod with one end fixed to the outer ring of the base ring and the other end fixed with a soft cushion, and a rotating abutment rod;

[0009] The front displacement support body comprises two pneumatic telescopic rods, the axes of which are perpendicular to the axis of the base ring;

[0010] There are three rotating abutment rods, which are evenly distributed around the circumference of the base ring, one end of which is rotatably connected to the outer wall of the base ring, a torsion spring is positioned at the connection position with the base ring, and the other end is provided with an end roller;

[0011] The connecting telescopic rod is a transversely arranged rigid pneumatic telescopic rod body, and both ends are respectively positioned at the ends of the two base rings.

[0012] Furthermore, the rotation interference rod is a hard manual telescopic rod.

[0013] Furthermore, the angle between the length direction of the rotation interference rod and the axial direction of the base ring is less than 85 degrees.

[0014] Preferably, both ends of the connecting telescopic rod are respectively ball-jointed to the ends of the two base rings.

[0015] Preferably, the end of the connecting telescopic rod is positioned at the end of the base ring near the bottom; when fixing the cable, the cable is passed through the two base rings at the same time and then fixed; after the cable end is dragged to the target position, the clamping clamp is controlled to be loosened, and then the pneumatic telescopic rod and the connecting telescopic rod are controlled to coordinately extend and retract, so that the cable laying system used in the cable laying project of the present application is retracted as a whole to the pipeline entrance.

[0016] Preferably, a clamping and fixing clip is also fixed on the front displacement support body; during the retraction process, the clamping and fixing clip on the one of the front displacement support body and the rear displacement support body that is in a non-moving state is in a clamping state.

[0017] Preferably, a safety rope is fixed on the rear displacement support;

[0018] The pneumatic telescopic rod is provided with an air leakage hole, and the existence of the air leakage hole makes the air pressure inside the pneumatic telescopic rod gradually change to the ambient air pressure when no new air enters the pneumatic telescopic rod, and no longer exerts pressure on the inner wall of the pipeline;

[0019] The safety rope is a steel wire rope, one end of which is fixed to the base ring of the rear displacement support body, and the other end is located outside the pipeline;

[0020] When a fault occurs, the safety rope is pulled to drag out the entire cable laying system for the cable laying project.

[0021] Preferably, there are multiple positioning points of the pneumatic telescopic rod and the rotating interference rod on the base ring.

[0022] Preferably, it also includes an expansion telescopic rod, a connecting pull rope and a jacket ball;

[0023] The expansion telescopic rod is a hard telescopic rod with a built-in compression spring, which contracts when under pressure;

[0024] The expansion telescopic rod is coaxial with the pneumatic telescopic rod and one end of the expansion telescopic rod is fixed to the end of the pneumatic telescopic rod away from the base ring;

[0025] The connecting ropes are elastic rubber ropes, which are always in a straight state, and there are 6 of them; both ends of the connecting ropes are respectively fixed to the ends of the adjacent rotating resistance rods away from the base ring; the three connecting ropes on the front displacement support body form a triangle;

[0026] The outer sleeve balls are spherical bodies, and there are multiple balls therein, which are strung together on the connecting ropes to form multiple strings; and the spacing between the connecting ropes on the same connecting rope is less than 10 centimeters.

[0027] Preferably, it also includes an expansion limit assembly and a plurality of expansion racks;

[0028] The expansion limit assembly includes a limit tube, a support rod, a hook rod and a rear support rod;

[0029] The limiting tube is a trumpet-shaped hard tube, the smaller end of which is fixed to the end of the base ring and is coaxial with the base ring;

[0030] One end of the support rod is fixed to the end of the base ring of the front displacement support body and is arranged close to the top of the base ring; a locking tongue structure is arranged at the top away from the end of the base ring;

[0031] The hooking rod acts as a hook, and is used to hook the expansion frame through its own telescopic movement so that it is sleeved on the supporting rod and moved between the top lifting block and the base ring;

[0032] One end of the rear support rod is fixed to a position close to the top of the end of the base ring of the rear displacement support body; a row of top pins is provided on the top of the rear support rod;

[0033] The expansion frame includes a carrier ring with an annular groove matching the ejector pin on the inner ring, a connecting plate which is a rectangular elastic metal plate, an adjusting plate and a resisting block; there are three connecting plates which are evenly distributed around the circumference of the carrier ring;

[0034] One end of the adjustment plate is fixed to the end of the connection plate away from the carrier ring, and is used to adapt to different pipelines;

[0035] The abutment block is a soft rubber block fixed to the end of the adjustment plate away from the connection plate.

[0036] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0037] By optimizing and improving the structure of the cable laying traction device in the prior art, the cable is pulled forward by utilizing the force of the cylinder contraction; when pulling the cable, the front half of the device is fixed to the inner wall of the pipe by tightening to ensure the pulling effect; the technical problems of the relatively poor applicability and passability and small traction force of the cable laying traction device in the prior art due to the limitation of its own structure are effectively solved, thereby achieving the technical effect of strong traction force, relatively good passability and applicability when laying cables in pipes in the cable laying system used in cable laying projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of the appearance and structure of a cable laying system for a cable laying project;

[0039] Figure 2 It is a schematic diagram of the connection relationship between the pneumatic telescopic rod and the air pump;

[0040] Figure 3 A schematic diagram of the connection relationship between the telescopic rod and the front displacement support body and the rear displacement support body;

[0041] Figure 4 It is a schematic diagram of the structure for connecting the telescopic rod;

[0042] Figure 5 A schematic diagram of the positional relationship between the connecting rope and the rotating resistance rod;

[0043] Figure 6 To expand the structural diagram of the telescopic rod;

[0044] Figure 7 To expand the schematic diagram of the position relationship between the limit assembly and the front displacement support body;

[0045] Figure 8 To expand the schematic diagram of the position relationship between the limit assembly and the rear displacement support body;

[0046] Fig. 9 It is a schematic diagram of the positional relationship between the supporting rod and the hooking rod;

[0047] Fig.10 It is a schematic diagram of the position relationship between the lifting block and the supporting rod;

[0048] Fig.11 This is a schematic diagram of the structure of the expansion rack;

[0049] Fig.12 It is a schematic diagram of the deformation state of the expansion frame when subjected to force.

[0050] In the figure:

[0051] The front displacement support body 100, the base ring 110, the clamping and fixing clamp 120, the pneumatic telescopic rod 130, the rotating contact rod 140, the end roller 141, the expansion telescopic rod 150, the connecting pull rope 160, the outer sleeve ball 170, the rear displacement support body 200, the connecting telescopic rod 300, the pump air assembly 400, the battery assembly 500, the safety rope 600, the limiting tube 710, the supporting rod 720, the top lifting block 721, the hook rod 730, the end telescopic pin 731, the rear supporting rod 740, the top pin 741, the expansion frame 800, the carrying ring 810, the connecting plate 820, the adjustment plate 830, the first plate 831, and the second plate 832. DETAILED DESCRIPTION

[0052] To facilitate the understanding of the present invention, the present application will be described more comprehensively below with reference to the relevant drawings; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to enable a more thorough and comprehensive understanding of the disclosed content of the present invention.

[0053] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0054] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0055] Embodiment 1

[0056] like Figure 1 and Figure 2 As shown, the cable laying system for the cable laying project of the present application includes a front displacement support 100, a rear displacement support 200, a connecting telescopic rod 300, a pump air assembly 400, a battery assembly 500 and a control unit.

[0057] The front displacement support 100 and the rear displacement support 200 have the same structure and are symmetrically arranged, and are both slidably positioned in the pipe where the cables need to be laid, and the two are connected and assembled together by connecting the telescopic rod 300, and the distance between them is greater than 50 cm and less than 150 cm;

[0058] For the convenience of description, the structure of the rear displacement support 200 is not described in detail, and "pipeline" is used to refer to "the pipe body where the cable needs to be laid";

[0059] The front displacement support body 100 includes a base ring 110 that plays a bearing and supporting role, a pneumatic telescopic rod 130 fixed on the outer ring (outer side wall) of the base ring 110, and a rotating abutment rod 140 that is rotatably connected to the outer side wall of the base ring 110;

[0060] The base ring 110 is a hard ring body or a hard pipe body, which is arranged transversely, and the axial direction is the same as the length direction of the pipeline;

[0061] The pneumatic telescopic rod 130 is connected to the pump air assembly 400, and is telescopic under the control of the control unit, and one end of the pneumatic telescopic rod 130 is fixed to the outer ring of the base ring 110; a rubber cushion is fixed to the end of the pneumatic telescopic rod 130 away from the base ring 110;

[0062] The front displacement support 100 comprises two pneumatic telescopic rods 130, the axes of the two pneumatic telescopic rods 130 are perpendicular to the axis of the base ring 110, and the axes of the two pneumatic telescopic rods 130 coincide with each other, and are in a retracted state under normal conditions;

[0063] The rotating abutment rod 140 is a hard manual telescopic rod, the length of which can be adjusted as needed, one end of which is rotatably connected to the outer wall of the base ring 110, and the other end of which is fixed with an end roller 141; the end roller 141 is a cylindrical or drum-shaped roller, which is rotatably connected to the end of the rotating abutment rod 140 and abuts against the inner wall of the pipe;

[0064] A torsion spring is positioned at the connection position between the rotating abutment rod 140 and the base ring 110. The existence of the torsion spring enables the end roller 141 to be tightly attached to the inner wall of the pipe under the action of elastic force; the angle between the length direction of the rotating abutment rod 140 and the axial direction of the base ring 110 is less than 85 degrees;

[0065] The number of the rotating abutment rods 140 of the front displacement support 100 is three, and the three rotating abutment rods 140 are evenly distributed around the circumference of the base ring 110 , and the end rollers 141 thereon always abut against the inner wall of the pipe to ensure the stable movement of the front displacement support 100 .

[0066] A clamping clamp 120 for clamping and fixing the cable under the control of a control unit is fixed on the inner wall of the base ring 110 of the rear displacement support 200; the clamping clamp 120 is an electric or pneumatic clamp; there is no clamping clamp 120 on the inner wall of the base ring 110 of the front displacement support 100.

[0067] The connecting telescopic rod 300 is a transversely arranged rigid pneumatic telescopic rod body, with both ends respectively positioned at the ends of the base ring 110 of the front displacement support body 100 and the rear displacement support body 200, and plays the role of bearing the connection and pulling the cable to move.

[0068] The pump air assembly 400 is a combination of an air pump, an air valve and an air pipe, which is fixed to the bottom of the telescopic rod 300 and operates under the control of a control unit.

[0069] The battery assembly 500 is a storage battery, which is fixed at the bottom of the telescopic rod 300 and serves as a power supply.

[0070] The control unit plays a role in controlling the coordinated operation of various components of the cable laying system for the cable laying project. This is prior art and will not be described in detail here.

[0071] Preferably, the control unit is a combination of a programmable logic controller and a remote control device.

[0072] When the cable laying system for the cable laying project of the embodiment of the present application is used:

[0073] 1. First, adjust the length of the rotating abutment rod 140 according to the inner diameter of the pipe so that it is in an inclined state when moving in the pipe;

[0074] 2. Then control all the pneumatic telescopic rods 130 to retract, and fix the ends of the cables to be laid on the rear displacement support 200;

[0075] 3. Insert the cable laying system for the cable laying project of the present application into the pipeline, with the front displacement support 100 in front and the rear displacement support 200 in the rear, and ensure that the rear displacement support 200 completely enters the pipeline;

[0076] 4. Control the pneumatic telescopic rod 130 of the front displacement support 100 to extend to contact the inner wall of the pipe to fix the front displacement support 100; then control the connecting telescopic rod 300 to shorten so that the rear displacement support 200 drives the cable to move forward;

[0077] 5. Control the pneumatic telescopic rod 130 of the front displacement support 100 to shorten, control the pneumatic telescopic rod 130 of the rear displacement support 200 to extend to contact the inner wall of the pipe, and then fix the rear displacement support 200; control the connecting telescopic rod 300 to extend so that the front displacement support 100 moves forward;

[0078] 6. After that, the pneumatic telescopic rod 130 and the connecting telescopic rod 300 are continuously controlled to be extended and retracted in coordination, so that the cable laying system for the cable laying project crawls in the pipeline as a whole and drives the cable to move forward to achieve laying;

[0079] 7. After the laying is completed, take out the cable laying system for the cable laying project at the pipeline outlet (or the shaft).

[0080] Preferably, the front shift support 100 and the rear shift support 200 are both provided with cameras and lighting lamps, and the operators can view the working conditions through the display screen.

[0081] Furthermore, two ends of the connecting telescopic rod 300 are fixed on the front displacement support body 100 and the rear displacement support body 200 .

[0082] Preferably, in order to facilitate the cable laying project of the present application, the cable laying system can realize a small angle turn in the pipeline, such as Figure 3 As shown, both ends of the connecting telescopic rod 300 are ball-connected to the ends of the two base rings 110 respectively.

[0083] Preferably, in order to further improve the practicality and applicability of the present application, Figure 4 As shown, the end of the connecting telescopic rod 300 is positioned at the end of the base ring 110 near the bottom; when fixing the cable, the cable is passed through the two base rings 110 at the same time and then fixed; after the cable end is pulled to the target position, the clamping clamp 120 is controlled to be loosened, and then the pneumatic telescopic rod 130 and the connecting telescopic rod 300 are controlled to coordinately extend and retract, so that the cable laying system used in the cable laying project of the present application is retreated as a whole to the pipeline entrance.

[0084] Preferably, in order to reduce friction during the sliding process, the corners of the base ring 110 and the corners of the clamping and fixing clamp 120 are rounded.

[0085] Preferably, in order to avoid the cable laying system used in the cable laying project of the present application from moving the already laid cables backwards when the entire system is retracted, thereby affecting the laying effect; a clamping and fixing clamp 120 is also fixed on the front displacement support body 100; during the retraction process, the clamping and fixing clamp 120 on the non-moving state of the front displacement support body 100 and the rear displacement support body 200 is in a clamped state.

[0086] Preferably, in order to prevent the cable laying system used in the cable laying project of the present application from being damaged in the pipeline due to a malfunction and being difficult to remove, a safety rope 600 is fixed to the rear displacement support body 200; an air leakage hole is provided on the pneumatic telescopic rod 130, and the existence of the air leakage hole allows the air pressure inside the pneumatic telescopic rod 130 to gradually change to the ambient air pressure when no new air enters the pneumatic telescopic rod 130, and no longer applies pressure to the inner wall of the pipeline; the safety rope 600 is a steel wire rope, one end of which is fixed to the base ring 110 of the rear displacement support body 200, and the other end is located outside the pipeline; when a malfunction occurs, the safety rope 600 is pulled to drag out the cable laying system for the cable laying project as a whole (if the clamping clamp 120 is still functioning, the safety rope 600 and the cable can be pulled out at the same time to drag out the system as a whole; if the clamping clamp 120 is not functioning, the cable can be pulled out first and then the safety rope 600).

[0087] Preferably, the safety rope 600 is a cable, which also serves as a power supply.

[0088] Preferably, in order to ensure the dragging force, the connecting telescopic rod 300 can also be a hydraulic cylinder, and an oil circuit system is provided on the connecting telescopic rod 300 to supply energy therefor.

[0089] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0090] The invention solves the technical problems in the prior art that the traction device for cable laying has relatively poor applicability and passability and small traction force due to its own structure limitation, and achieves the technical effect that the cable laying system used in the cable laying project has strong traction force, relatively good passability and applicability when laying cables in pipelines.

[0091] Embodiment 2

[0092] In order to further improve the passability and applicability of the present application, so that even if one or more cables have been laid in the pipeline, other cables can be laid smoothly and conveniently, the present embodiment of the present application adds an expansion telescopic rod 150, a connecting rope 160 and a jacket ball 170 on the basis of the above embodiment; specifically:

[0093] like Figure 5 and Figure 6 As shown, the number of positioning points of the pneumatic telescopic rod 130 and the rotating abutment rod 140 on the base ring 110 is multiple, and the positions of the pneumatic telescopic rod 130 and the rotating abutment rod 140 can be adjusted as needed;

[0094] The expansion telescopic rod 150 is a hard telescopic rod with a built-in compression spring, which contracts when compressed. The number of the expansion telescopic rods 150 is the same as that of the pneumatic telescopic rods 130 and corresponds one-to-one with the pneumatic telescopic rods 130. The expansion telescopic rod 150 is coaxial with the pneumatic telescopic rod 130 and one end is fixed to the end of the pneumatic telescopic rod 130 away from the base ring 110. The other end of the expansion telescopic rod 150 is fixed with a soft pad.

[0095] The connecting ropes 160 are elastic rubber ropes, which are always in a straight state, and there are 6 of them. Three connecting ropes 160 are provided on the front displacement support body 100. The two ends of the connecting ropes 160 are respectively fixed to the ends of the adjacent rotating abutment rods 140 away from the base ring 110. The three connecting ropes 160 on the front displacement support body 100 form a triangle.

[0096] The outer sleeve balls 170 are spheres, and there are multiple of them, which are strung together on the connecting ropes 160; the spacing between the connecting ropes 160 on the same connecting rope 160 is less than 10 cm.

[0097] When there is already a cable in the pipe, the outer sleeve ball 170 can be pressed against the side wall of the cable in the pipe under the elastic force of the connecting pull rope 160 .

[0098] Embodiment 3

[0099] Considering that the cable laying system for the cable laying project of the present application needs to drag the entire cable during movement, the cable is easily worn due to friction on the inner wall of the pipeline, which may easily cause potential damage and risk hazards to the cable, and lead to high energy consumption; in view of the above problems, the embodiment of the present application adds an expansion limit assembly and multiple expansion racks 800 on the basis of the above embodiment, and completes the cable laying under the premise of small cable wear and low energy consumption, specifically:

[0100] like Figures 7 to 12 As shown, the expansion limit assembly is fixed on the base ring 110 of the front displacement support body 100 and the rear displacement support body 200, and includes a limiting tube 710, a supporting rod 720, a hooking rod 730 and a rear supporting rod 740;

[0101] like Figure 7 and Figure 8 As shown, the limiting tube 710 is a trumpet-shaped hard tube, the circumference ratio of the large end to the small end is 2:1 to 3:2, and the smaller end is fixed to the end of the base ring 110 and is coaxial with the base ring 110; the limiting tube 710 of the front displacement support body 100 opens forward, and the limiting tube 710 of the rear displacement support body 200 opens backward;

[0102] like Fig. 9 and Fig.10 As shown, the support rod 720 is a hard straight rod arranged transversely, one end of which is directly or indirectly fixed to the end of the base ring 110 of the front displacement support body 100, and is arranged close to the top of the base ring 110, with a length of one-half to two-thirds of the axial length of the limiting tube 710; the end of the support rod 720 away from the base ring 110 is sharp or has rounded corners to facilitate the insertion of the expansion frame 800; a top lifting block 721 is provided at the top of the support rod 720 near the end away from the base ring 110; the top lifting block 721 is The locking tongue structure is normally protruding, and sinks into the interior of the supporting rod 720 when under pressure; when the expansion frame 800 is located between the top lifting block 721 and the base ring 110, it contacts the inner wall of the limiting tube 710 and is restricted by the top lifting block 721 and cannot be separated from the supporting rod 720; the hooking rod 730 acts as a hook, which is a horizontal rod body located on one side of the supporting rod 720, and is used to hook the expansion frame 800 through its own telescopic movement so that it is sleeved on the supporting rod 720 and moved between the top lifting block 721 and the base ring 110;

[0103] The hooking rod 730 is L-shaped as a whole, and includes a basic telescopic rod and an end telescopic pin 731 positioned on the side wall of the basic telescopic rod near the end; the basic telescopic rod is an electric or pneumatic telescopic rod, one end of which is fixed to the end of the basic ring 110 directly or indirectly fixed to the front displacement support body 100; the end telescopic pin 731 is an electric pin, close to the other end of the basic telescopic rod, and is completely retracted into the basic telescopic rod when retracted;

[0104] like Figure 8 As shown, the rear support rod 740 is a transversely arranged hard rod body, one end of which is fixed at the end of the base ring 110 of the rear displacement support body 200 near the top, and the length is one-half to two-thirds of the axial length of the limiting tube 710, and the axial direction is the same as the axial direction of the limiting tube 710, which serves the purpose of temporarily placing the expansion rack 800; a row of top pins 741 are provided on the top of the rear support rod 740; the top pins 741 are electric pins, which retract into the rear support rod 740 in the retracted state, and serve to limit the expansion rack 800 when extended. Each top pin 741 corresponds to an expansion rack 800, and when the top pin 741 is extended, it is inserted into the annular groove of the expansion rack 800 to fix it.

[0105] like Fig.11 and Fig.12 As shown, the expansion frame 800 is a radial frame body, which is used to temporarily support the cables being laid in the pipeline, and includes a carrier ring 810, a connecting plate 820, an adjustment plate 830 and a resistance block;

[0106] The carrier ring 810 is a hard circular ring, and the inner ring is provided with an annular groove matching the ejector pin 741;

[0107] The connecting plate 820 is a rectangular or long metal elastic plate, and the angle between it and the axis of the carrier ring 810 is 90 degrees; the connecting plate 820 is used to clamp the entire expansion frame 800 in the pipeline through its own deformation (bending and then stretching) to provide temporary support for the cables being laid; there are three connecting plates 820, which are evenly distributed around the circumference of the carrier ring 810;

[0108] The adjustment plate 830 is a manually retractable rod structure or a combination of two detachable and fixed hard plates. The overall shape is long and one end is fixed to the end of the connecting plate 820 away from the carrier ring 810. The length direction of the connecting plate 820 in the stretched state is the same as the length direction of the adjustment plate 830. The adjustment plate 830 is used to adapt to different pipes.

[0109] The abutment block is a soft rubber block, fixed to the end of the adjustment plate 830 away from the connection plate 820, and the surface close to the side wall of the pipeline is a plane to provide stable support.

[0110] Preferably, in order to reduce sliding friction, the inner edge of the carrier ring 810 is provided with smooth rounded corners.

[0111] Preferably, in order to further reduce sliding friction, a laterally arranged funnel-shaped roller is fixed to the inner ring of the carrier ring 810 .

[0112] When the cable laying system for the cable laying project of the embodiment of the present application is used:

[0113] 1. First, adjust the length of the adjustment plate 830 according to the inner diameter of the pipeline so that the expansion frame 800 can be just stuck in the pipeline after being stretched;

[0114] 2. Then, insert multiple expansion racks 800 into the limiting tube 710 of the rear displacement support body 200, and fix the multiple expansion racks 800 one by one with the help of the push pins 741 (during the insertion process, the connecting plates 820 of the expansion racks 800 are compressed and bent to accumulate elastic potential energy; the spacing between the abutment blocks is reduced accordingly, and the abutment blocks will not contact the inner wall of the pipe before the expansion racks 800 are stretched); pass the cables through all the expansion racks 800 and the base ring 110 and fix them;

[0115] 3. Plug the entire cable laying project into the pipeline with the cable laying system and control the progress;

[0116] 4. After traveling a certain distance (the distance is dynamically adjusted according to actual needs), the top pin 741 farthest from the base ring 110 is controlled to retract and release an expansion rack 800; the expansion rack 800 is stretched after being released, and after stretching, the expansion rack 800 is stuck in the pipeline and is in a vertical state, and the resistance block is deformed and resists the inner wall of the pipeline; during the traveling process, the cable needs to be fed in by means of a reel or manual auxiliary wire feeding to ensure that the cable is suspended in the pipeline and thus ensure that it does not cause too much lateral pressure on the expansion rack 800 and thus ensure that the expansion rack 800 will not be crushed; the layout spacing of the expansion rack 800 is less than 3 meters to ensure that the expansion rack 800 will not be crushed;

[0117] 5. After reaching the target position, other components except the expansion rack 800 can be taken out and then go through the pipe again to complete the recovery of the expansion rack 800; during the recovery process, the telescopic pin 731 at the telescopic matching end of the hook rod 730 hooks the expansion rack 800 into the position between the top lifting block 721 of the supporting rod 720 and the base ring 110, causing the expansion rack 800 to bend and detach from the inner wall of the pipe.

[0118] Preferably, if it is inconvenient to remove the components at the target location, a new set of cable laying systems for the cable laying project of the present application can be put into the expansion rack 800 for recycling, and then the two sets of cable laying systems for the cable laying project of the present application can be controlled to return in sequence along the original route.

[0119] Furthermore, the adjustment plate 830 includes a first plate 831 and a second plate 832; the first plate 831 and the second plate 832 are both rectangular hard plates, and both are provided with long through grooves along their own length directions; the first plate 831 and the second plate 832 are detachably fixed together by bolts, and the length of the adjustment plate 830 spliced ​​by the first plate 831 and the second plate 832 is adjustable.

[0120] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cable laying system for cable laying engineering, characterized in that: It comprises a front displacement support body (100), a rear displacement support body (200) fixed with a clamping and fixing clamp (120), a connecting telescopic rod (300), a pump air assembly (400), and a battery assembly (500); the structure of the front displacement support body (100) and the rear displacement support body (200); The front displacement support body (100) comprises a transversely arranged base ring (110), a pneumatic telescopic rod (130) with one end fixed to the outer ring of the base ring (110) and the other end fixed with a soft pad, and a rotating abutment rod (140); The front displacement support body (100) comprises two pneumatic telescopic rods (130), and the axes of the pneumatic telescopic rods (130) are perpendicular to the axis of the base ring (110); The number of the rotating abutting rods (140) is three and they are evenly distributed around the circumference of the base ring (110). One end of the rotating abutting rods (140) is rotatably connected to the outer wall of the base ring (110). A torsion spring is positioned at the connection position with the base ring (110). The other end is provided with an end roller (141). The connecting telescopic rod (300) is a hard pneumatic telescopic rod body arranged transversely, and its two ends are respectively positioned at the ends of the two base rings (110).

2. The cable laying system for cable laying engineering according to claim 1, characterized in that: The rotation interference rod (140) is a hard manual telescopic rod.

3. The cable laying system for cable laying engineering according to claim 1, characterized in that: The angle between the length direction of the rotation abutment rod (140) and the axial direction of the base ring (110) is less than 85 degrees.

4. The cable laying system for cable laying engineering according to claim 1, characterized in that: The two ends of the connecting telescopic rod (300) are respectively ball-connected to the ends of the two base rings (110).

5. The cable laying system for cable laying engineering according to claim 1, characterized in that: The end of the connecting telescopic rod (300) is positioned at a position close to the bottom of the end of the base ring (110); when fixing the cable, the cable is passed through the two base rings (110) at the same time and then fixed; after the cable end is pulled to the target position, the clamping clamp (120) is controlled to be loosened, and then the pneumatic telescopic rod (130) and the connecting telescopic rod (300) are controlled to be coordinated and extended, so that the cable laying system for the cable laying project of the present application is retreated as a whole to the pipeline entrance.

6. The cable laying system for cable laying engineering according to claim 5, characterized in that: A clamping and fixing clip (120) is also fixed on the front displacement support (100); during the retraction process, the clamping and fixing clip (120) on the one of the front displacement support (100) and the rear displacement support (200) that is in a non-moving state is in a clamping state.

7. The cable laying system for cable laying engineering according to claim 6, characterized in that: A safety rope (600) is fixed on the rear displacement support body (200); The pneumatic telescopic rod (130) is provided with an air leakage hole, and the presence of the air leakage hole allows the air pressure inside the pneumatic telescopic rod (130) to gradually become the ambient air pressure when no new air enters the pneumatic telescopic rod (130), and no longer exerts pressure on the inner wall of the pipeline; The safety rope (600) is a steel wire rope, one end of which is fixed to the base ring (110) of the rear displacement support body (200), and the other end of which is located outside the pipeline; When a fault occurs, the safety rope (600) is pulled to drag out the entire cable laying system for the cable laying project.

8. The cable laying system for cable laying engineering according to claim 6, characterized in that: The number of positioning points of the pneumatic telescopic rod (130) and the rotating abutment rod (140) on the base ring (110) is multiple.

9. The cable laying system for cable laying engineering according to claim 8, characterized in that: It also includes an expansion telescopic rod (150), a connecting pull rope (160) and a jacket ball (170); The expansion telescopic rod (150) is a hard telescopic rod with a built-in compression spring, which contracts when under pressure; The expansion telescopic rod (150) is coaxial with the pneumatic telescopic rod (130) and one end of the expansion telescopic rod (150) is fixed to an end of the pneumatic telescopic rod (130) away from the base ring (110); The connecting pull ropes (160) are elastic rubber ropes, which are always in a stretched state, and there are six of them; both ends of the connecting pull ropes (160) are respectively fixed to the ends of the adjacent rotating abutment rods (140) away from the base ring (110); the three connecting pull ropes (160) on the front displacement support body (100) form a triangle; The outer sleeve balls (170) are spherical bodies, and are in multiple numbers and are strung together on the connecting ropes (160) to form multiple strings; the spacing between the connecting ropes (160) on the same connecting rope (160) is less than 10 centimeters.

10. The cable laying system for cable laying engineering according to any one of claims 5 to 8, characterized in that: Also includes an expansion limit assembly and a plurality of expansion racks (800); The expansion limiting assembly comprises a limiting tube (710), a supporting rod (720), a hooking rod (730) and a rear supporting rod (740); The limiting tube (710) is a trumpet-shaped hard tube, the smaller end of which is fixed to the end of the base ring (110) and is coaxial with the base ring (110); One end of the support rod (720) is fixed to the end of the base ring (110) of the front displacement support body (100) and is arranged close to the top of the base ring (110); a locking tongue structure is arranged at a position of the top away from the end of the base ring (110); The hooking rod (730) acts as a hook and is used to hook the expansion frame (800) through its own telescopic movement so that the expansion frame (800) is sleeved on the supporting rod (720) and moved between the top lifting block (721) and the base ring (110); One end of the rear support rod (740) is fixed to a position close to the top of the end of the base ring (110) of the rear displacement support body (200); a row of top pins (741) is provided on the top of the rear support rod (740); The expansion frame (800) comprises a carrier ring (810) whose inner ring is provided with an annular groove matching the ejector pin (741), a connecting plate (820) which is a rectangular elastic metal plate, an adjustment plate (830) and a resisting block; the number of connecting plates (820) is three, which are evenly distributed around the circumference of the carrier ring (810); One end of the adjustment plate (830) is fixed to an end of the connection plate (820) away from the carrier ring (810) for adapting to different pipelines; The abutment block is a soft rubber block, fixed to an end of the adjustment plate (830) away from the connection plate (820).

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