A buried cable anti-corrosion laying device

Abstract

The application belongs to the technical field of cable installation, and particularly relates to a buried cable anti-corrosion laying device. The device comprises a lifting frame, a guard plate and a cushion plate; the cushion plate is arranged in the lifting frame, the cable is laid on the cushion plate, and the lifting frame is provided with transverse elastic expansion function; the lifting frame is provided with the guard plate on both sides, and comprises a back-shaped side frame and a V-shaped bottom bracket; the opposite side bottom of the side frame is provided with an elastic horizontal rod, and the opposite side bottom of the bottom bracket is provided with an elastic bottom rod; the lifting frame realizes transverse displacement compensation through the elastic horizontal rod and the elastic bottom rod; the cushion plate is used for placing the cable, the elastic side is movably arranged on both sides of the cushion plate, the guard plate covers the outer side wall of the side frame, the top and bottom of the guard plate are both provided with an L-shaped clamping edge, and the outer side of the guard plate is provided with an anti-corrosion layer; the structure of the scheme is designed through layered protection, elastic buffering, active anti-corrosion and modularization, and the technical defects of the traditional laying scheme are solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cable installation, in particular to a buried cable anti-corrosion laying device. BACKGROUND

[0002] As the core infrastructure of power transmission and communication signal transmission, buried cables are widely used in urban power grids, industrial parks, remote power supply and other scenes. They are in the underground soil environment for a long time and need to continuously bear the soil pressure, environmental displacement and corrosion of corrosive media, which leads to the following technical pain points in the traditional laying mode, seriously affecting the service life and operation safety of the cable.

[0003] 1) The underground soil is easily affected by temperature changes (seasonal freezing and thawing, diurnal thermal expansion and contraction), hydrological conditions (precipitation penetration, underground water level fluctuation) and external loads (pavement vehicle rolling, earthwork construction), resulting in transverse or longitudinal displacement. The traditional buried cable laying method is to directly bury or wrap with a rigid sleeve:

[0004] When directly buried, the cable lacks fixed support, and soil displacement easily causes the cable to rub and squeeze each other, and even be scratched by sharp soil particles.

[0005] Although the rigid sleeve can provide some protection, the sleeve cannot deform synchronously with the soil displacement, and the squeezing force caused by the displacement will be directly transmitted to the cable, causing the cable insulation layer to break and the conductor to deform, and in severe cases, causing a short circuit fault.

[0006] 2) Corrosion of corrosive media: Corrosive media such as salt, acidic / alkaline substances and microorganisms exist in the underground soil, and long-term immersion in underground water will accelerate the penetration of corrosive media. The traditional laying method cannot effectively block the invasion of liquid corrosive media (such as salt-containing underground water) and small molecule corrosive substances (such as sulfides in the soil), which seriously affects the service life of the cable.

[0007] Based on the above reasons, the present application provides a buried cable anti-corrosion laying device. SUMMARY

[0008] The purpose of the present application is to provide a buried cable anti-corrosion laying device to solve the problems raised in the background art.

[0009] To achieve the above purpose, the present application provides the following technical scheme: a buried cable anti-corrosion laying device, comprising a lifting frame, a guard plate and a pad; the pad is arranged in the lifting frame, the cable is laid on the pad, and the lifting frame has a transverse elastic expansion function; the lifting frame is provided with a guard plate on both sides, and the lifting frame comprises a back-shaped side frame and a V-shaped bottom bracket.

[0010] The opposite bottom of the side frame is provided with a telescopic horizontal rod, and the opposite bottom of the bottom bracket is provided with a telescopic bottom rod; the lifting frame realizes horizontal displacement compensation through the telescopic horizontal rod and the telescopic bottom rod; the cushion plate is used for placing cables, and the two sides of the cushion plate are movably provided with telescopic edges; the protective plate covers the outer side wall of the side frame, and the top and bottom of the protective plate are provided with L-shaped clamping edges; and the outer side of the protective plate is provided with a corrosion-resistant layer.

[0011] Preferably, the top of the lifting frame is covered with a bearing plate, the bearing plate is an acrylic plate or a glass plate, and the two sides of the bearing plate are fixed to the top of the protective plate; the side frames are symmetrically arranged on the two sides, the side frames are provided with reinforcing ribs, the frame bodies of the side frames are extended through welding, and the bottoms of the side frames on the two sides are symmetrically provided with the bottom brackets; the bottom of the lifting frame is also provided with a bearing plate.

[0012] Preferably, the telescopic horizontal rod comprises a damping cylinder and two connecting rods, the outer ends of the two connecting rods are fixed to the inner sides of the side frames, the damping cylinder is arranged between the two connecting rods, and the connecting rods are inserted into the damping cylinder; a first umbrella-shaped rubber pad is arranged in the inner cavity of the damping cylinder, and the ends of the two connecting rods close to the first umbrella-shaped rubber pad are both provided with first connecting spring columns; when the two first connecting spring columns are stressed, they press the first umbrella-shaped rubber pad inward, so as to realize force transmission and conversion.

[0013] Preferably, a rubber inner cylinder is sleeved on the first umbrella-shaped rubber pad, and when the first umbrella-shaped rubber pad is pressed, it expands synchronously with the rubber inner cylinder, so as to reduce the friction between the first umbrella-shaped rubber pad and the inner wall of the damping cylinder; limit rubber blocks are arranged at the two ends of the inner cavity of the damping cylinder, and limit rings are arranged at the positions of the connecting rods close to the limit rubber blocks, so as to buffer the force.

[0014] Preferably, the telescopic bottom rod comprises two damping cylinders and a link rod, the link rod is arranged between the two damping cylinders, and the damping cylinders are sleeved on the two ends of the link rod.

[0015] A second umbrella-shaped rubber pad is arranged in the inner cavity of the link rod, and a second connecting spring column is arranged in the damping cylinder, the second connecting spring column is connected inwardly with the second umbrella-shaped rubber pad, and when the two damping cylinders are stressed, they press the link rod inward, so as to realize the functions of buffering and compensating displacement; a base is arranged at the end of the second connecting spring column away from the damping cylinder, and the base is a rubber base.

[0016] Preferably, the top surface of the cushion plate is provided with limit edges protruding upward, cable limiting grooves are reserved between adjacent limit edges, and the cable limiting grooves are used for placing cables; the telescopic edges are telescopic in the inner cavity of the cushion plate, the telescopic edges are provided with fixing bolts, the telescopic edges are installed on the frame of the side frame through the fixing bolts, and the telescopic edges are telescopic synchronously with the lifting frame, so that the laying device as a whole has the function of horizontal displacement compensation.

[0017] Preferably, the clamping edges are clamped inwardly on the side frames, the clamping edges and the corresponding positions of the side frames are provided with mounting holes, and bolts for fixing are arranged in the mounting holes.

[0018] Preferably, transverse reinforcing ribs are arranged between the two side guards, and the transverse reinforcing ribs are arranged at the bottom of the load-bearing plate for supporting; the corrosion-resistant layer is composed of a geomembrane, a seepage-proof blanket, a non-woven fabric and a corrosion-resistant coating, and a drainage blind pipe is arranged on the two sides of the side frame, and a filter layer composed of quartz sand and geotextile is arranged outside the drainage blind pipe to prevent soil particles from blocking the water inlet holes; one water collecting well is arranged every 50-80 m, and the bottom of the water collecting well is communicated with the underground drainage pipe network to discharge water in the cable laying tunnel.

[0019] Compared with the prior art, the beneficial effects of the present application are:

[0020] The present application solves the technical defects of the traditional laying scheme by the structure of layered protection-elastic buffer-active corrosion-modular design.

[0021] 1. Effectively resist soil displacement and avoid mechanical damage to the cable.

[0022] 1) Transverse elastic buffer mechanism. The lifting frame can flexibly adjust the width by the cooperation of the telescopic cross rod (damping cylinder-umbrella-shaped rubber pad-connection spring column) and the telescopic bottom rod (damping cylinder-linking rod-rubber base), and when the soil is extruded or stretched, the umbrella-shaped rubber pad absorbs the displacement force through elastic deformation, converts the rigid impact into flexible buffer, and avoids the structure deformation extruding the cable; at the same time, the cooperation of the limiting ring and the limiting rubber block prevents the telescopic parts from disengaging, and ensures the stability and controllability of the buffer process.

[0023] 2) Synchronous telescopic pad plate design. The telescopic edges on both sides of the pad plate can be telescoped synchronously with the lifting frame, and the limiting groove on the top surface of the pad plate can fix multiple cables in different zones, which not only avoids the mutual friction of the cables, but also ensures that the cables are always within the supporting range and are not pulled due to structural displacement, thereby fundamentally solving the problem of cable scratches and deformation caused by soil displacement.

[0024] 2. Multi-layer corrosion protection and active drainage, which greatly prolongs the service life of the cable.

[0025] 1) Composite corrosion-resistant isolation layer. The composite corrosion-resistant layer of the geomembrane-seepage-proof blanket-non-woven fabric-corrosion-resistant coating on the outside of the guard plate forms a double barrier of physical barrier-chemical protection - the geomembrane and the seepage-proof blanket block the penetration of underground water and liquid corrosive medium, the non-woven fabric filters soil particles to avoid scratching the membrane, and the corrosion-resistant coating protects the guard plate body from oxidation, which cuts off the corrosion path in multiple dimensions, and the corrosion medium penetration rate is greatly reduced compared with the traditional single corrosion structure.

[0026] 2) Efficient drainage system. The drainage blind pipe on both sides of the side frame (combined with quartz sand-geotextile filter layer) can quickly collect water accumulated in the tunnel. The water collection well set every 50-80 meters will guide the accumulated water into the underground drainage pipe network, effectively avoiding the immersion of the cable by underground water. This drainage system can improve the efficiency of removing water accumulated in the cable laying tunnel, significantly reduce the aging speed of the cable insulation layer, and prolong the service life of the cable underground.

[0027] The embodiments of the present application will be described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the front view of the present application.

[0029] Figure 2 It is the split drawing of the lifting frame and the guard plate of the present application.

[0030] Figure 3 It is the schematic drawing of the lifting frame of the present application.

[0031] Figure 4 It is the schematic drawing of the guard plate of the present application.

[0032] Figure 5 It is the schematic drawing of the telescopic cross rod of the present application.

[0033] Figure 6 It is the schematic drawing of the telescopic bottom rod of the present application.

[0034] Figure 7 It is the schematic drawing of the base plate of the present application.

[0035] In the drawing: 100 lifting frame, 101 side frame, 102 bottom bracket, 103 telescopic cross rod, 104 telescopic bottom rod;

[0036] 10301 damping cylinder, 10302 connecting rod, 10303 first umbrella-shaped rubber pad, 10304 first connecting spring column, 10305 rubber inner cylinder, 10306 limiting rubber block;

[0037] 10401 damping cylinder, 10402 connecting rod, 10403 second umbrella-shaped rubber pad, 10404 second connecting spring column, 10405 base;

[0038] 200 guard plate, 201 mounting hole, 202 clamping edge, 203 corrosion-resistant layer;

[0039] 300 base plate, 301 limiting edge, 302 cable limiting groove, 303 telescopic edge. DETAILED DESCRIPTION

[0040] Please refer to Figures 1-7The application provides the following technical scheme: a buried cable anti-corrosion laying device, comprising a lifting frame 100, a guard plate 200 and a cushion plate 300; the cushion plate 300 is arranged in the lifting frame 100, the cable is laid on the cushion plate 300, and the lifting frame 100 has a transverse elastic extension function.

[0041] The guard plate 200 is arranged on the two sides of the lifting frame 100, and a bearing plate is arranged on the top of the lifting frame 100; the bearing plate is an acrylic plate or a glass plate, and the two sides of the bearing plate are fixed to the top of the guard plate 200.

[0042] The lifting frame 100 comprises a back-shaped side frame 101 and a V-shaped bottom bracket 102; the side frame 101 is symmetrically arranged on the two sides, and the side frame 101 is provided with a reinforcing rib; the frame body of the side frame 101 is extended by welding, and the bottom of the side frame 101 on the two sides is symmetrically provided with the bottom bracket 102.

[0043] The opposite side of the side frame 101 is provided with a telescopic cross rod 103, and the opposite side of the bottom bracket 102 is provided with a telescopic bottom rod 104; the lifting frame 100 realizes transverse buffering and displacement compensation through the telescopic cross rod 103 and the telescopic bottom rod 104.

[0044] The bottom bracket 102 abuts against the ground downward to provide support for the side frame 101; meanwhile, the bottom of the lifting frame 100 is also provided with a bearing plate to block the invasion of soil impurities in the bottom direction.

[0045] The telescopic cross rod 103 comprises a damping cylinder 10301 and two connecting rods 10302; the outer ends of the two connecting rods 10302 are fixed to the inner side of the side frame 101, the damping cylinder 10301 is arranged between the two connecting rods 10302, and the connecting rods 10302 are inserted into the damping cylinder 10301.

[0046] A first umbrella-shaped rubber pad 10303 is arranged in the inner cavity of the damping cylinder 10301, and the end of each connecting rod 10302 close to the first umbrella-shaped rubber pad 10303 is provided with a first connecting spring column 10304; when the two first connecting spring columns 10304 are stressed, the first umbrella-shaped rubber pad 10303 is pressed inward to realize force transmission and conversion.

[0047] A rubber inner cylinder 10305 is sleeved on the first umbrella-shaped rubber pad 10303; when the first umbrella-shaped rubber pad 10303 is pressed, the first umbrella-shaped rubber pad 10303 and the rubber inner cylinder 10305 are expanded synchronously to reduce the friction between the first umbrella-shaped rubber pad 10303 and the inner wall of the damping cylinder 10301.

[0048] The inner cavity of the damping cylinder 10301 is provided with a limiting rubber block 10306 at both ends, and a limiting ring is arranged at the position close to the limiting rubber block 10306 of the connecting rod 10302. The limiting ring can not only prevent the connecting rod 10302 from being separated from the damping cylinder 10301, but also abut on the limiting rubber block 10306 to buffer the acting force.

[0049] The telescopic bottom rod 104 includes two damping cylinders 10401 and a connecting rod 10402. The connecting rod 10402 is arranged between the two damping cylinders 10401, and the damping cylinders 10401 are sleeved at both ends of the connecting rod 10402.

[0050] The inner cavity of the connecting rod 10402 is provided with a second umbrella-shaped rubber pad 10403, and the damping cylinder 10401 is provided with a second connecting spring column 10404. The second connecting spring column 10404 is connected inwardly with the second umbrella-shaped rubber pad 10403. When the two damping cylinders 10401 are stressed and press the connecting rod 10402 inwardly, the acting force is converted to realize the functions of buffering and compensating displacement.

[0051] The second connecting spring column 10404 is provided with a base 10405 at the end away from the damping cylinder 10401. The base 10405 is a rubber base for improving the damping effect.

[0052] The top surface of the pad 300 is distributed with upwardly protruding limiting edges 301. Adjacent limiting edges 301 are reserved with cable limiting grooves 302 for placing cables. The lifting frame 100 is distributed along the burying direction of the cables to uniformly lift the cables.

[0053] The two sides of the pad 300 are movably provided with telescopic edges 303. The telescopic edges 303 can be telescoped in the inner cavity of the pad 300. The telescopic edges 303 are provided with fixing bolts. The telescopic edges 303 are installed on the frame of the side frame 101 through the fixing bolts and are telescopically synchronized with the lifting frame 100, so that the laying device as a whole has a transverse displacement compensation function.

[0054] The guard plate 200 covers the outer side wall of the side frame 101. The top and bottom of the guard plate 200 are provided with L-shaped clamping edges 202. The clamping edges 202 are clamped inwardly on the side frame 101. The clamping edges 202 and the corresponding positions of the side frame 101 are both provided with mounting holes 201. The mounting holes 201 are provided with bolts for fixing. The clamping edge 202 at the bottom is arranged between adjacent bottom brackets 102. The outer side of the guard plate 200 is provided with a corrosion-resistant layer 203.

[0055] Horizontal reinforcing ribs are arranged between the two side guard plates 200 and are located at the bottom of the load-bearing plate for supporting.

[0056] The anticorrosive layer 203 is composed of a geomembrane, a waterproof blanket, a non-woven fabric and an anticorrosive coating, and a drainage blind pipe is arranged on both sides of the side frame 101, and a filter layer composed of quartz sand and geotextile is arranged outside the drainage blind pipe to prevent soil particles from blocking the water inlet holes.

[0057] A water collecting well is arranged every fifty to eighty meters, the bottom of which is communicated with the underground drainage pipe network, and is responsible for discharging water in the cable laying tunnel to meet the anticorrosion requirements of various cables.

[0058] Working principle: The device forms all-around protective wrapping for the cable through the modular design of the lifting frame 100, the guard plate 200 and the cushion plate 300, and the functions of the layers are complementary and work cooperatively.

[0059] The limiting edge of the top surface of the cushion plate 300 forms a special cable limiting groove 302, which can separate and fix multiple cables to avoid damage caused by mutual friction between the cables; at the same time, the telescopic edges 303 on both sides of the cushion plate 300 can be synchronously adjusted with the lateral telescopic extension of the lifting frame 100 to ensure that the cable is always within the stable support range and is not pulled due to structural deformation.

[0060] The lifting frame 100 has an elastic load-bearing skeleton, which is composed of a back-shaped side frame 101 and a V-shaped bottom bracket 102. The side frame 101 enhances the overall rigidity through the reinforcing ribs, and cooperates with the load-bearing plate on the top and the lateral reinforcing ribs to bear the soil pressure above; the bottom bracket 102 is V-shaped and abuts against the ground downward, and provides stable support for the side frame 101 by utilizing the stability of the triangle; the lifting frame 100 is distributed along the extension direction of the cable, and the main body of the side frame 101 is assembled by welding.

[0061] The guard plate 200 is covered on the outside of the side frame 101 and is tightly connected with the lifting frame 100 through the L-shaped clamping edge 202 and the bolt fixation to form a lateral protective barrier to block the direct impact of soil impurities such as stones and sharp particles on the lifting frame 100 and the cable.

[0062] The top and bottom of the lifting frame 100 are covered with load-bearing plates, which are acrylic / glass plates. The top load-bearing plate can directly bear the soil pressure above to avoid the pressure acting directly on the guard plate 200 and the lifting frame 100; the bottom load-bearing plate can block the impurities in the underground soil from invading the inside of the device from the bottom; the lateral reinforcing ribs between the two guard plates 200 further improve the load-bearing capacity of the top load-bearing plate to prevent the load-bearing plate from being broken due to excessive pressure.

[0063] In the buried environment, the soil will produce lateral displacement due to temperature changes such as thermal expansion and contraction, precipitation penetration, soil wet expansion and dry contraction, etc. If the device is rigidly fixed, it is easy to cause damage to the device structure and squeeze or pull the cable, which reduces the service life of the cable and the device.

[0064] The telescopic horizontal rod 103 is installed at the bottom of the side frame 101 and is composed of a damping cylinder 10301 and two connecting rods 10302. The force transmission and buffering are realized through springs and umbrella-shaped rubber pads.

[0065] When the soil is laterally extruded, the side frame 101 pushes the connecting rod 10302 to shrink into the damping cylinder 10301. At this time, the first connecting spring column 10304 at the end of the connecting rod 10302 extrudes the first umbrella-shaped rubber pad 10303 in the damping cylinder 10301. After being extruded, the first umbrella-shaped rubber pad 10303 elastically deforms, converting the soil extrusion force into the elastic potential energy of the rubber. At the same time, the damping property of the rubber itself can absorb part of the impact force, realizing buffering.

[0066] The limiting rubber blocks 10306 at both ends of the damping cylinder 10301 cooperate with the limiting rings on the connecting rod 10302, which can prevent the connecting rod from completely separating from the damping cylinder and further buffer through the limiting ring abutting against the limiting rubber block 10306 when the connecting rod is shrunk to the limit, avoiding hard collision.

[0067] The telescopic bottom rod 104 is installed at the bottom of the two side bottom brackets 102 and has a similar structure and principle as the telescopic horizontal rod 103, but is optimized for the bottom soil displacement. The telescopic bottom rod 104 is composed of two damping cylinders 10401 and a middle connecting rod 10402. The second umbrella-shaped rubber pad 10403 in the connecting rod 10402 is connected with the second connecting spring column 10404 in the damping cylinder 10401.

[0068] When the bottom soil is laterally displaced, it pushes the damping cylinder 10401 to shrink into the connecting rod 10402. The second connecting spring column 10404 extrudes the second umbrella-shaped rubber pad 10403, which absorbs the displacement force through the rubber deformation and spring elasticity, compensating for the lateral displacement of the bottom.

[0069] Through the synergistic effect of the telescopic horizontal rod 103 and the telescopic bottom rod 104, the lifting frame 100 can flexibly adjust the width with the lateral displacement of the soil. It will not be deformed and damaged due to soil extrusion, nor will it be broken due to soil stretching. It always provides stable support space for the cable.

[0070] Multi-layer corrosion prevention isolation, blocking the invasion of corrosive media, the corrosion-resistant layer 203 on the outside of the protection plate 200 adopts a composite structure of geomembrane, impermeable blanket, non-woven fabric and corrosion-resistant coating.

[0071] Geomembrane: core impermeable layer, preventing the penetration of underground water and liquid corrosive media in the soil into the protection plate 200 and the lifting frame 100.

[0072] Impervious blanket: auxiliary impervious, further enhance the barrier ability to water and small molecule corrosive substances;

[0073] Non-woven fabric: filter layer, block soil particles adhere to the geomembrane surface, to avoid particles scratch the film body resulting in impervious failure.

[0074] Anti-corrosion layer: directly protect the body of the shield 200, prevent the shield 200 from being oxidized and rusted by corrosive substances in the soil; the anti-corrosion layer 203 adopts a chemical coating composed of epoxy resin and curing agent or isocyanate and amine chain extender;

[0075] Active drainage dredging, reduce groundwater soaking; through the drainage blind pipe, filter layer and water collecting well to form a complete drainage system, to avoid the accumulation of groundwater in the cable laying tunnel.

[0076] Drainage blind pipe: laid on both sides of the side frame 101, can quickly collect the groundwater in the tunnel, such as the water formed by the precipitation penetration and the rising of the groundwater level.

[0077] Filter layer: composed of quartz sand and geotextile, wrapped outside the drainage blind pipe, can not only let the water flow smoothly into the blind pipe, but also filter soil particles to prevent particles from blocking the water inlet hole of the blind pipe.

[0078] Water collecting well: set one every fifty to eighty meters, the bottom is communicated with the underground drainage pipe network, can concentrate the water collected by the blind pipe and discharge, fundamentally reduce the long-term soaking of groundwater to the cable, lifting frame 100 and shield 200, and reduce the corrosion risk.

[0079] The above description is only a specific embodiment of the present application, and various examples do not constitute a limitation on the essential content of the present application.

Claims

1. A buried cable anti-corrosion laying device, comprising a lifting frame (100), a guard plate (200) and a cushion plate (300), characterized in that: the cushion plate (300) is arranged in the lifting frame (100), the cable is laid on the cushion plate (300), and the lifting frame (100) has a transverse elastic expansion function; the lifting frame (100) comprises a back-shaped side frame (101) and a V-shaped bottom bracket (102); the opposite side bottoms of the side frame (101) are provided with elastic transverse rods (103), and the opposite side bottoms of the bottom bracket (102) are provided with elastic bottom rods (104); the lifting frame (100) realizes transverse displacement compensation through the elastic transverse rods (103) and the elastic bottom rods (104); the cushion plate (300) is used for placing the cable, the two sides of the cushion plate (300) are movably provided with elastic edges (303), the guard plate (200) covers the outer side wall of the side frame (101), the top and bottom of the guard plate (200) are provided with L-shaped clamping edges (202), and the outer side of the guard plate (200) is provided with an anti-corrosion layer (203); the elastic transverse rod (103) comprises a damping cylinder (10301) and two connecting rods (10302), the outer ends of the two connecting rods (10302) are fixed to the inner side of the side frame (101), the damping cylinder (10301) is arranged between the two connecting rods (10302), and the connecting rods (10302) are inserted into the damping cylinder (10301); a first umbrella-shaped rubber pad (10303) is arranged in the inner cavity of the damping cylinder (10301), and the ends of the two connecting rods (10302) close to the first umbrella-shaped rubber pad (10303) are provided with first connecting spring columns (10304); when the two first connecting spring columns (10304) are stressed, the first connecting spring columns (10304) are pressed inward to compress the first umbrella-shaped rubber pad (10303), so that force transmission and conversion are realized.

2. A device for laying a buried cable in a trench according to claim 1, characterized in that: a rubber inner cylinder (10305) is sleeved on the first umbrella-shaped rubber pad (10303); when the first umbrella-shaped rubber pad (10303) is compressed, the first umbrella-shaped rubber pad (10303) and the rubber inner cylinder (10305) are expanded synchronously, so as to reduce the friction between the first umbrella-shaped rubber pad (10303) and the inner wall of the damping cylinder (10301); limit rubber blocks (10306) are arranged at the two ends of the inner cavity of the damping cylinder (10301), and limit rings are arranged at the positions of the connecting rods (10302) close to the limit rubber blocks (10306), so as to buffer the force.

3. A device for laying a buried cable in a trench according to claim 1, characterized in that: the elastic bottom rod (104) comprises two shock-absorbing cylinders (10401) and a connecting rod (10402), the connecting rod (10402) is arranged between the two shock-absorbing cylinders (10401), and the shock-absorbing cylinders (10401) are sleeved on the two ends of the connecting rod (10402); The inner cavity of the connecting rod (10402) is provided with a second umbrella-shaped rubber pad (10403), and the damping cylinder (10401) is provided with a second connecting spring column (10404), the second connecting spring column (10404) is connected with the second umbrella-shaped rubber pad (10403) inward, when the damping cylinders (10401) on both sides are stressed and press the connecting rod (10402) inward, the buffering and displacement compensation effects are realized; the second connecting spring column (10404) is provided with a base (10405) away from the damping cylinder (10401), and the base (10405) is a rubber base.

4. A buried cable anti-corrosion laying device according to claim 1, characterized in that: The top surface of the pad (300) is distributed with upward protruding limiting edges (301), and cable limiting grooves (302) are reserved between adjacent limiting edges (301), which are used for placing cables; the telescopic edges (303) are telescopic in the inner cavity of the pad (300), the telescopic edges (303) are provided with fixing bolts, the telescopic edges (303) are installed on the frame of the side frame (101) through the fixing bolts, and are synchronous with the lifting frame (100), so that the laying device has a transverse displacement compensation function.

5. A buried cable anti-corrosion laying device according to claim 1, characterized in that: The clamping edges (202) are clamped inward on the side frame (101), the clamping edges (202) and the corresponding positions of the side frame (101) are provided with mounting holes (201), and the mounting holes (201) are provided with bolts for fixing, and the bottom clamping edges (202) are arranged between adjacent bottom brackets (102).

6. A buried cable anti-corrosion laying device according to claim 5, characterized in that: The transverse reinforcing ribs are arranged between the two side guards (200) and are arranged at the bottom of the bearing plate for supporting; the corrosion-resistant layer (203) is composed of geomembrane, impermeable blanket, non-woven fabric and corrosion-resistant coating, and the drainage blind pipe is arranged on both sides of the side frame (101), and the filter layer composed of quartz sand and geotextile is arranged outside the drainage blind pipe to prevent soil particles from blocking the water inlet hole; one water collecting well is arranged every 50m-80m, the bottom is communicated with the underground drainage pipe network, and is responsible for discharging the water flow in the cable laying tunnel.

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