CN114156785B

CN114156785B - Power cable laying process

Info

Publication number: CN114156785B
Application number: CN202111444756.1A
Authority: CN
Inventors: 阚真浪; 奚杏云
Original assignee: Nanjing Suqin Electric Power Equipment Installation Co ltd
Current assignee: Nanjing Suqin Electric Power Equipment Installation Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-08-23
Anticipated expiration: 2041-11-30
Also published as: CN114156785A

Abstract

The application relates to a power cable laying process, which relates to the field of cable laying and comprises the following steps: digging a laying groove; paving a gravel bottom layer on the bottom wall of the laying groove, mounting a steel bar framework on the gravel bottom layer, and paving an impervious gravel layer between the side wall of a vertical net of the steel bar framework and the groove side wall of the cable trench; respectively carrying out anti-permeability concrete layer plastering construction on the horizontal net side wall and the vertical net side wall of the steel bar framework to form a cable trench; the supporting box is fixedly arranged on the mounting stand columns, the cable is fixed in an arc-shaped supporting groove in the top wall of the supporting box by using a fixing component, a plurality of drain holes communicated with the inside of the supporting box are formed in the groove wall of the arc-shaped supporting groove, a plurality of drain holes are formed in the bottom wall of the supporting box, and an anti-seepage component used for plugging the drain holes is arranged in the supporting box; covering a trench cover plate so as to seal the cable trench; and backfilling soil in the cable trench. The cable has the effects of helping to prevent the cable from being soaked by accumulated water and influencing the service life, and is energy-saving and environment-friendly.

Description

Power cable laying process

Technical Field

The application relates to the field of cable laying, in particular to a power cable laying process.

Background

The cable laying refers to a process of laying and installing cables along a surveyed route to form a cable line, and can be divided into several laying modes such as overhead, underground, underwater, wall and tunnel according to use occasions.

At present, when an underground cable is laid, a cable trench needs to be dug on the ground according to the standard requirements, a sandstone cushion layer is laid on the trench bottom wall of the cable trench, after the sandstone cushion layer is laid, the cable is laid on the sandstone cushion layer, a concrete waterproof board is laid on the laid cable, and finally soil is backfilled in the cable trench.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when the rainwater was more in summer, surface water can form ponding in permeating the cable pit and forming through lower floor's soil and gravel bed course, and then leads to the cable bubble in ponding, causes the insulating protective layer of cable to expand the deformation easily, has influenced the life of cable.

Disclosure of Invention

In order to solve the problem that the service life of a cable is easily influenced due to the fact that the cable is soaked in accumulated water, the application provides a power cable laying process.

The power cable laying process provided by the application adopts the following technical scheme:

a power cable laying process, according to cable laying scheme and site field condition, confirm the laying route of the cable, dig and set up the laying trough on the ground floor;

paving a gravel bottom layer on the bottom wall of the laying groove, mounting a steel bar framework on the gravel bottom layer, wherein the steel bar framework consists of a horizontal net and two vertical nets which are oppositely arranged, the horizontal net is fixedly connected between opposite side walls of the two vertical nets, the horizontal net is fixedly inserted on the gravel bottom layer through a plurality of mounting stand columns, one ends of the mounting columns extend out of the side walls of the horizontal net far away from the gravel bottom layer, impervious spaces are reserved between the side walls of the vertical nets and the groove side walls of the cable trench, and impervious gravel layers are paved in the impervious spaces;

respectively carrying out anti-permeability concrete layer plastering construction on the side wall of the horizontal net far away from the gravel bottom layer and the side wall of the vertical net far away from the anti-permeability gravel layer to form a cable trench;

the supporting box is fixedly arranged on the mounting upright posts, the top wall of the supporting box is provided with an arc-shaped supporting groove for supporting the cable, the cable is fixed in the arc-shaped supporting groove by using a fixing component, the groove wall of the arc-shaped supporting groove is provided with a plurality of drain holes communicated with the inside of the supporting box, the bottom wall of the supporting box is provided with a plurality of drain holes, and an anti-seepage component for plugging the drain holes is arranged in the supporting box;

covering a trench cover plate at the top of the cable trench so as to seal the cable trench;

and backfilling soil in the cable trench to finish the laying of the cable.

By adopting the technical scheme, the structural strength of the cable trench is enhanced by utilizing the combination of the anti-seepage gravel layer, the gravel bottom layer and the steel bar framework, and the anti-seepage waterproof effect on the side wall and the trench bottom wall of the cable trench is enhanced by utilizing the anti-seepage concrete layer; if in groundwater permeates the cable pit, along with ponding in the cable pit increases gradually, ponding permeates to the support incasement through a plurality of wash ports, utilizes a plurality of wash ports of impervious subassembly shutoff this moment, has reduced the probability that ponding permeates to the arc through the wash port and hold in the palm the inslot, avoids the cable to soak in ponding and send out the damage of expanding as far as possible, has prolonged the life of cable, and is energy-concerving and environment-protective.

Optionally, the fixed subassembly is including compressing tightly the apron, the roof both sides of supporting box and along self length direction equipartition be equipped with a plurality of rubber inserted blocks, the roof of supporting box is equipped with the movable groove that is used for holding the rubber inserted block, the diapire that compresses tightly the apron is equipped with and supplies rubber inserted block male slot, the lateral wall of supporting box is equipped with and is used for inserting the rubber inserted block telescopic part in the slot, the lateral wall that compresses tightly the apron and hold in the palm the groove towards the arc is equipped with and compresses tightly the groove with cable matched with, the lateral wall that compresses tightly the apron is equipped with and is used for fixing the bolt in the slot with the rubber inserted block.

Through adopting the above technical scheme, during the installation, will compress tightly the apron lid earlier and establish on supporting box, hold in the palm the groove through compressing tightly and arc and play the positioning action to the position that the cable is located on the supporting box, then utilize the partial lateral wall of extensible member drive rubber inserted block to insert in the slot, because the rubber inserted block is the rubber material, through inserting the partial lateral wall of rubber inserted block in the slot, will compress tightly the apron and stabilize in advance and fix on supporting box, then utilize the bolt to fix the rubber inserted block in the slot again, so that will compress tightly the apron and fix on supporting box, and then will compress tightly the cable and fix in the arc holds in the palm the groove.

Optionally, the telescopic part comprises a pulling plate, a pulling rod, a first spring and a plurality of telescopic blocks, a telescopic groove communicated with the plurality of movable grooves is arranged in the side wall of the supporting box, the pulling plate is arranged in the telescopic groove, the outer wall of the supporting box is provided with a pulling hole communicated with the telescopic groove, one end of the pull rod is abutted against the outer wall of the supporting box through the pull handle, the other end of the pull rod passes through the pull hole and extends into the telescopic groove to be connected with the pull plate, the first spring is sleeved on the pull rod, one end of the first spring is connected with the groove wall of the telescopic groove, the other end of the first spring is connected with the side wall of the pulling plate, a plurality of the telescopic blocks are arranged on the side wall of the pulling plate far away from the pulling rod, the plurality of the telescopic blocks are respectively in one-to-one correspondence with a plurality of rubber insertion blocks, the telescopic block is connected with the rubber insertion block in a sliding mode, and sliding inclined planes matched with each other are arranged on opposite side walls of the telescopic block and the rubber insertion block.

By adopting the technical scheme, during installation, a person firstly pulls the pull rod to move towards the outer wall of the supporting box through the pull handle, at the moment, the first spring is compressed, and then the pull rod drives the pull plate to slide towards the direction away from the rubber insertion block, so that the pull plate drives the rubber insertion block to move downwards through the telescopic block, and the pressing cover plate is stably covered on the supporting box; and then the pull handle is released, and the pull plate pushes the rubber insert to move upwards through the telescopic block by utilizing the elastic buoyancy of the first spring, so that part of the side wall of the rubber insert is inserted into the slot.

Optionally, the top wall of the supporting box is abutted against the bottom wall of the pressing cover plate through a sealing waterproof plate.

Through adopting above-mentioned technical scheme, utilize the sealing waterproof board to realize compressing tightly the sealing connection between apron and the supporting box lateral wall, reduced ponding and penetrated the probability in the arc holds in the palm the groove through compressing tightly the gap between apron and the supporting box.

Optionally, impervious subassembly includes the floating block, the both sides wall of floating block all is equipped with the lift kickboard, the inside wall of supporting box and along self direction of height are equipped with the lift groove, the lift kickboard is kept away from the one end of floating block and is slided in the lift groove, the roof of floating block is equipped with the pole setting, the one end that the floating block was kept away from to the pole setting is equipped with the arc layer board, the both sides limit wall of arc layer board all articulates and is connected with the side arc board, the inner arc wall of arc layer board is towards the arc and is held in the palm the groove, be equipped with on the lift kickboard and be used for driving the side arc board to keep away from articulated one end to arc layer board direction pivoted driving piece, the inner arc wall of side arc board is held in the groove towards the arc, the inner arc wall of arc layer board and the inner arc wall of side arc board are all inserted through the shutoff and are established in the drain hole.

Through adopting above-mentioned technical scheme, along with the rising of the interior water level of supporting box, the floating block rises simultaneously along with the water level of supporting box with supporting the kickboard, utilize driving piece drive side arc board to keep away from articulated one end and rotate to arc layer board direction simultaneously, rise to the take the altitude after until the ponding water level of supporting the incasement, shelter from the interior roof that supports the case and be located a plurality of wash ports through arc layer board and two side arc boards, and utilize the shutoff piece to insert and establish in the drain hole, realized the automatic shutoff to the wash port, reduced ponding and penetrated to the arc through the wash port and hold in the palm the groove in and influence the life of cable.

Optionally, the driving piece includes two gas storage bags, two the gas storage bag respectively with two the lift kickboard one-to-one, the sticky setting of gas storage bag is between the interior roof of lift kickboard roof and supporting box, two sticky flexible gasbag that is equipped with between the outer arc wall of side arc board and the roof of floating block, two the gas storage bag respectively with two flexible gasbag one-to-one, communicate each other through the branch pipe between gas storage bag and the flexible gasbag.

Through adopting above-mentioned technical scheme, along with shifting up of the water level in the supporting box, the interval between the roof reduces gradually in lift kickboard and the supporting box, and the lift kickboard extrudees the gas storage bag this moment, and then in the air supply in the gas storage bag passes through the branch pipe and gets into flexible gasbag to make flexible gasbag expand gradually, and then provide to arc layer board direction pivoted power for the side arc board through flexible gasbag.

Optionally, the shutoff piece includes a plurality of water inflation stagnant water posts, and is a plurality of water inflation stagnant water post respectively with a plurality of wash ports one-to-one, the inner arc wall of arc layer board and the inner arc wall of side arc board all are equipped with the foam-rubber cushion, adjacent two link to each other through sealed flexbile plate between the foam-rubber cushion, water inflation stagnant water post sets up on the lateral wall of foam-rubber cushion, water inflation stagnant water post is used for inserting and establishes in the wash port, the diameter of water inflation stagnant water post is less than the aperture of wash port.

Through adopting above-mentioned technical scheme, when the ponding water level in the supporting box was too high, ponding permeates to the foam-rubber cushion through the gap between side arc board and the supporting box inner roof easily, utilizes the foam-rubber cushion to absorb water and with the water source direction meet water inflation stagnant water post this moment, and then meets water inflation stagnant water post and meet water inflation and block up the wash port, has realized the automatic shutoff to the wash port.

Optionally, a water supply assembly for providing a water source for the sponge pad on the side arc plate is arranged on the inner top wall of the support box, the water supply assembly comprises a water storage bag and a bag breaking needle, a water guide hole is formed in the inner top wall of the support box, a cavity communicated with the water guide hole is formed in the top wall of the support box, the water storage bag is arranged in the cavity, and an automatic sliding piece for driving the bag breaking needle to move towards the water storage bag is arranged in the cavity.

Through adopting above-mentioned technical scheme, when the water level in the supporting box was too high, utilize the broken bag needle of automatic sliding drive to remove to the water storage bag direction to utilize the automatic water storage bag that punctures of broken bag needle, and then the water source in the water storage bag passes through water guiding hole flow direction foam-rubber cushion, has increased the water absorption capacity of foam-rubber cushion, so that the foam-rubber cushion provides the water supply for meeting water inflation stagnant water post.

Optionally, the automatic sliding part includes an electromagnet, a permanent magnet, a second spring and a displacement sensor, the electromagnet is fixed on the cavity wall of the cavity, the permanent magnet is arranged at one end of the bag breaking needle far away from the water storage bag, the second spring is arranged between the electromagnet and the opposite side wall of the permanent magnet, a sliding block is arranged on the side wall of the permanent magnet, a sliding groove for the sliding block to slide is arranged on the cavity wall of the cavity, the displacement sensor is arranged on the inner bottom wall of the support box and located on one side of the water guide hole, and the displacement sensor is electrically connected with the electromagnet.

Through adopting above-mentioned technical scheme, utilize displacement sensor real-time detection lift kickboard and the interior roof of supporting box actual distance value between, and convey the actual distance value that detects to the PLC controller, the PLC controller compares actual distance value and preset distance value, if actual distance value reaches preset distance value, the PLC controller sends the power supply circuit of signal to the electro-magnet, cut off the power supply circuit to the electro-magnet, the electro-magnet loses the electromagnetic field this moment, and then utilize the elasticity of second spring, promote the permanent magnet to slide to keeping away from the electro-magnet direction, and then the permanent magnet drives broken bag needle and removes to the water storage bag direction, so that utilize broken bag needle to prick broken water storage bag, so that when the water level in the supporting box rises to preset water level height, automatic prick water storage bag, so that the foam-rubber cushion absorbs water, make meet water inflation stagnant water column inflation and automatic shutoff wash port.

Optionally, flow guide blocks are arranged on the cavity wall of the cavity and on two sides of the water guide hole, and the longitudinal sectional area of each flow guide block increases progressively from one side close to the water guide hole to one side far away from the water guide hole.

Through adopting above-mentioned technical scheme, after the water storage bag is punctured by broken bag needle, utilize the water conservancy diversion piece, to the water source flow direction water guide hole in the cavity play the effect of water conservancy diversion, add the water supply efficiency to the foam-rubber cushion.

In summary, the present application includes at least one of the following beneficial technical effects:

along with the gradual increase of the accumulated water in the cable trench, the accumulated water permeates into the support box through the plurality of drain holes, and at the moment, the plurality of drain holes are blocked by the anti-seepage component, so that the probability that the accumulated water permeates into the arc-shaped support groove through the drain holes is reduced, the cable is prevented from being soaked in the accumulated water to cause expansion and damage to the cable, the service life of the cable is prolonged, and the cable is energy-saving and environment-friendly;

the floating block and the supporting floating plate simultaneously rise along with the water level in the supporting box, meanwhile, the driving piece is used for driving one end, far away from the hinged joint, of the side arc plate to rotate towards the direction of the arc-shaped supporting plate, until the water level of accumulated water in the supporting box rises to a certain height, the arc-shaped supporting plate and the two side arc plates shield the inner top walls of the supporting box, located in the plurality of drain holes, and the blocking piece is inserted into the drain holes, so that the drain holes are automatically blocked, and the influence on the service life of a cable caused by the fact that the accumulated water permeates into the arc-shaped supporting groove through the drain holes is reduced;

after the power supply circuit to the electromagnet is cut off, the electromagnet loses an electromagnetic field, and then the permanent magnet is pushed to slide in the direction away from the electromagnet by utilizing the elasticity of the second spring, and then the permanent magnet drives the bag breaking needle to move in the direction of the water storage bag, so that the water storage bag is broken by utilizing the bag breaking needle, the water storage bag is automatically broken when the water level in the supporting box rises to a preset water level height, the sponge cushion absorbs water, and the water-swelling water-stopping column is swelled to automatically block the water drainage hole.

Drawings

Fig. 1 is a schematic structural diagram of an overall power cable laying process in an embodiment of the present application.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is a specific structural schematic diagram of the positional relationship between the support box and the mounting posts in the embodiment of the present application.

Fig. 4 is a schematic sectional view taken along the plane a-a in fig. 3.

Fig. 5 is an enlarged view at B in fig. 4.

Fig. 6 is an enlarged view at C in fig. 4.

Fig. 7 is an enlarged view at D in fig. 4.

Description of the reference numerals: 1. laying a groove; 2. a macadam bottom layer; 3. a steel reinforcement frame; 31. a horizontal screen; 32. a vertical net; 33. mounting the upright post; 4. an impervious crushed stone layer; 5. a rendering coat of impervious concrete; 6. a support box; 61. an arc bracket; 62. a drain hole; 63. a drain hole; 7. a fixing component; 71. pressing the cover plate; 72. rubber insert blocks; 73. a movable groove; 74. a slot; 75. a compaction groove; 76. a bolt; 77. sealing the waterproof board; 8. a telescoping member; 81. pulling a plate; 82. a pull rod; 83. a first spring; 84. a telescopic block; 85. a telescopic groove; 86. hole drawing; 87. a sliding slope; 88. pulling a handle; 9. an impervious assembly; 91. a floating block; 92. lifting the floating plate; 93. a lifting groove; 94. erecting a rod; 95. an arc-shaped supporting plate; 96. a side arc plate; 10. a drive member; 101. a gas storage bag; 102. a telescopic air bag; 103. a branch pipe; 11. a blocking member; 111. a water stop column expanding when meeting water; 112. a sponge cushion; 113. a flexible sealing plate; 12. a water supply assembly; 121. a water storage bag; 122. a bag breaking needle; 123. a water guide hole; 124. a cavity; 125. a flow guide block; 13. an automatic sliding member; 131. an electromagnet; 132. a permanent magnet; 133. a second spring; 134. a displacement sensor; 135. a slider; 136. a chute.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

The embodiment of the application discloses a power cable laying process. Referring to fig. 1 and 2, the power cabling process includes the steps of:

s1: according to the cable laying scheme and field conditions on the site, a cable laying path is determined, and a laying groove 1 is dug on the ground layer according to the cable laying path.

S2: paving a gravel bottom layer 2 on the bottom wall of a laying groove 1, installing a steel bar framework 3 on the gravel bottom layer 2, wherein the installation frame is integrally formed and manufactured by a horizontal net 31 and two vertical nets 32 which are oppositely arranged, the horizontal net 31 is arranged between opposite side walls of the two vertical nets 32, the length directions of the horizontal net 31 and the vertical nets 32 are in the same direction as the length direction of the laying groove 1, a plurality of installation stand columns 33 are arranged in the middle of the side walls of the horizontal net 31 at equal intervals along the length direction of the installation stand columns, the installation stand columns 33 are vertically arranged, the installation stand columns 33 are fixedly arranged on the side walls of the horizontal net 31, the bottom ends of the installation stand columns 33 extend out of the bottom wall of the horizontal net 31 and are inserted into the gravel bottom layer 2, and then the horizontal net 31 is stably lapped on the gravel bottom layer 2 through the installation stand columns 33; in this embodiment, two vertical nets 32 respectively with lay the vertical lateral wall one-to-one of the both sides long limit of groove 1, vertical net 32 and lay the groove wall of groove 1 between reserve and have impervious space, through laying impervious metalling 4 in impervious space, further strengthened the stability of steel framework 3 installation on rubble bottom 2, through the setting of rubble bottom 2, steel framework 3 and impervious metalling 4, strengthened the structural strength who lays groove 1.

S3: the construction of plastering impervious concrete layers is respectively carried out on the bottom wall of the horizontal net 31 far away from the gravel layer and the side wall of the vertical net 32 far away from the impervious gravel layer 4, the impervious concrete layers are solidified and formed to form a cable trench, and the impervious concrete layers are arranged, so that the water seepage prevention effect of the cable trench is further enhanced, and the groundwater is prevented from permeating into the cable trench as much as possible;

s4: referring to fig. 2 and 3, a support box 6 is placed in the cable trench, the length direction of the support box 6 is the same as the length direction of the cable trench, the support box 6 is supported by a plurality of mounting columns 33, and the bottom wall of the support box 6 is fixedly mounted at the top ends of the mounting columns 33;

referring to fig. 3 and 4, an arc bracket 61 is arranged on the top wall of the support box 6 along the length direction of the support box, the longitudinal section of the arc bracket 61 is arc-shaped, the arc bracket 61 is used for supporting a cable, the cable is fixed in the arc bracket 61 by using the fixing component 7, three drain holes 62 are arranged on the groove wall of the arc bracket 61 along the arc direction of the support box, the three drain holes 62 form a hole group, and the hole group is arranged on the groove wall of the arc bracket 61 and arranged at equal intervals along the length direction of the support box 6;

a plurality of drain holes 63 are formed in the two sides of the bottom wall of the support box 6 along the length direction of the support box, and anti-seepage assemblies 9 for blocking the drain holes 62 are arranged in the support box 6; when groundwater infiltrates into the cable trench, along with the water level in the cable trench continuously rises, and then ponding in the cable trench easily stretches into in the supporting box 6 through a plurality of wash ports 62 on the supporting box 6 diapire, if the ponding volume of infiltration in the supporting box 6 is too much, utilize impervious subassembly 9 shutoff a plurality of wash ports 62, avoid ponding to try hard to avoid in the arc support groove 61 of seeping through wash port 62 infiltration, reduced the cable bubble in ponding and leaded to the insulating protective layer of cable to expand and warp, prolonged the life of cable, energy-concerving and environment-protective.

S5: the cover plate is arranged at the top groove opening of the cable trench, so that rainwater flows to the cable through the groove opening of the cable trench in rainy weather as much as possible, and the cover plate is utilized to seal the cable trench.

S6: and backfilling soil into the cable trench so as to stably cover the trench cover plate at the trench opening of the cable trench to finish the laying of the cable.

Referring to fig. 4 and 5, the fixing assembly 7 comprises a pressing cover plate 71, the pressing cover plate 71 is positioned above the supporting box 6, and the bottom wall of the pressing cover plate 71 is provided with a pressing groove 75 matched with the arc-shaped bracket 61; the pressing cover plate 71 is placed on the supporting box 6, and then the pressing groove 75 is matched with the arc-shaped bracket 61, so that the cable is positioned.

In this embodiment, a plurality of rubber inserts 72 are disposed on both sides of a top wall of the supporting box 6, the rubber inserts 72 are arranged at equal intervals along a length direction of the supporting box 6, the top wall of the supporting box 6 is provided with movable grooves 73 corresponding to the rubber inserts 72 one by one, the movable grooves 73 are vertically arranged, the rubber inserts 72 lift in the movable grooves 73, the bottom wall of the pressing cover plate 71 is provided with slots 74 corresponding to the movable grooves 73 one by one, the side wall of the supporting box 6 is provided with telescopic pieces 8 used for driving the rubber inserts 72 to lift, the telescopic pieces 8 are used for driving the rubber inserts 72 to move upwards, so that partial side walls of the rubber inserts 72 are inserted into the slots 74, the side wall of the pressing cover plate 71 is provided with bolts 76 for fixing the rubber inserts 72 in the slots 74, and fixed connection between the pressing cover plate 71 and the supporting box 6 is realized, and the cable is stably fixed on the supporting box 6.

Referring to fig. 5, the extensible member 8 includes a pulling plate 81, a pulling rod 82, a first spring 83 and a plurality of extensible blocks 84, an extensible groove 85 communicated with the plurality of movable grooves 73 is provided inside the wall of the support box 6, the length direction of the extensible groove 85 and the length direction of the pulling plate 81 are both in the same direction as the length direction of the support box 6, the pulling plate 81 is slidably disposed in the extensible groove 85, a pulling hole 86 communicated with one side of the extensible groove 85 away from the movable grooves 73 is provided on the outer wall of the support box 6, the pulling rod 82 is slidably disposed in the pulling hole 86, one end of the pulling rod 82 passes through the pulling hole 86 and extends into the extensible groove 85, one end of the pulling rod 82 is fixedly connected with the side wall of the pulling plate 81 away from the movable grooves 73, the axial direction of the pulling rod 82 is perpendicular to the axial direction of the pulling plate 81, the other end of the pulling rod 82 extends out of the outer wall of the support box 6 and is integrally formed with a pulling handle 88, the pulling handle 88 is abutted against the outer side wall of the support box 6, the first spring 83 is disposed on the side wall of the pulling rod 85, one end of the first spring 83 is fixedly connected with the side wall of the pulling plate 81 on the pull rod 82, and the other end of the first spring 83 is connected with the groove wall of the telescopic groove 85, so that the elastic force of the first spring 83 is utilized to provide the pulling plate 81 with the force of sliding towards the direction of the movable groove 73.

In this embodiment, a plurality of flexible pieces 84 equipartitions set up the lateral wall towards activity groove 73 at arm-tie 81, a plurality of flexible pieces 84 all set up with arm-tie 81 integrated into one piece, a plurality of flexible pieces 84 and a plurality of rubber inserted block 72 one-to-one, flexible piece 84 level sets up, the axial of flexible piece 84 perpendicular to rubber inserted block 72, flexible piece 84 slides with rubber inserted block 72 and is connected, the lateral wall of flexible piece 84 is equipped with the dovetail piece, the lateral wall of rubber inserted block 72 is equipped with the dovetail that supplies the dovetail piece to slide, the relative lateral wall of flexible piece 84 and rubber inserted block 72 all is equipped with the inclined plane 87 that slides of mutually supporting, and then slide in flexible groove 85 along with flexible piece 84, through the inclined plane 87 that slides, the cooperation of dovetail piece and dovetail, drive rubber inserted block 72 goes up and down.

With reference to fig. 4 and 5, the top wall of the supporting box 6 is glued with a sealing and waterproofing plate 77; after the cover plate 71 is covered on the top wall of the supporting box 6, the sealing waterproof plate 77 is tightly attached to the bottom wall of the cover plate 71, so that the sealing of the gap between the cover plate 71 and the top wall of the supporting box 6 is realized, the probability of seeper into the arc-shaped supporting groove 61 through the gap is reduced, and the waterproof protection effect on the cable is realized.

Referring to fig. 4 and 6, the anti-seepage assembly 9 comprises a floating block 91 positioned in the support box 6, wherein lifting floating plates 92 are arranged on two side walls of the floating block 91, lifting grooves 93 are arranged on two side inner walls of the support box 6 along the height direction of the floating block, one end of the lifting floating plate 92, which is far away from the floating block 91, slides in the lifting grooves 93, and a plurality of balls are embedded in the groove walls of the lifting grooves 93 and abut against the side walls of the lifting floating plate 92; when having ponding in the supporting box 6, along with the water level of ponding moves up gradually, floating block 91 and lift kickboard 92 move up gradually along with the water level, and lift kickboard 92 slides in lift groove 93 simultaneously, and lift groove 93 plays direction and limiting displacement to the lift of lift kickboard 92, and the setting of a plurality of balls has reduced the frictional force between lift kickboard 92 and the lift groove 93 cell wall to lift kickboard 92 can stably go up and down.

The fixed pole setting 94 that is equipped with vertical setting in top of floating block 91, the bottom of pole setting 94 links to each other with the roof of floating block 91, the top of pole setting 94 is equipped with arc layer board 95, arc layer board 95's outer arc wall and pole setting 94 fixed connection, arc layer board 95's inner arc wall is towards the interior roof of supporting box 6, in this embodiment, the supporting box 6 is located the interior roof of a plurality of wash ports 62 and also is equipped with the arc convex surface to unanimous with arc layer board 95, so that arc layer board 95's inner arc wall can laminate each other with the interior roof of supporting box 6.

The side arc plates 96 are hinged to the two side walls of the arc supporting plate 95, and when the outer arc walls of the side arc plates 96 have no external supporting force, the side arc plates 96 rotate towards the top wall close to the floating block 91 under the action of self gravity; in this embodiment, the lifting floating plate 92 is provided with a driving member 10 for driving one end of the side arc plate 96 far away from the hinge joint to rotate towards the arc supporting plate 95; when the water level in the supporting box 6 rises, the driving piece 10 is used for providing supporting force for the side arc plates 96, and the arc-shaped supporting plate 95 and the two side arc plates 96 are abutted with the inner top wall of the supporting plate positioned on the arc-shaped convex surface, so that the plurality of water drainage holes 62 are automatically blocked by the arc-shaped supporting plate 95 and the two side arc plates 96; in this embodiment, the inner arc wall of the arc-shaped supporting plate 95 and the inner arc wall of the side arc plate 96 are inserted into the drainage hole 62 through the plugging member 11, which helps to prevent the seeper from seeping into the arc-shaped supporting groove 61 through the drainage hole 62, and avoids the cable from bulging and deforming in the seeper as much as possible, thereby prolonging the service life of the cable.

Referring to fig. 4 and 6, the driving member 10 includes two air storage bags 101 and two telescopic air bags 102, the two air storage bags 101 are respectively in one-to-one correspondence with the two lifting floating plates 92, the air storage bags 101 are fixedly bonded between the top walls of the lifting floating plates 92 and the inner top wall of the supporting box 6, the two telescopic air bags 102 are respectively in one-to-one correspondence with the two side arc plates 96, and the telescopic air bags 102 are fixedly bonded between the outer arc walls of the side arc plates 96 and the top wall of the floating block 91; along with the rising of the water level in the supporting box 6, the floating block 91 and the lifting floating plate 92 move upwards, at the moment, the distance between the lifting floating plate 92 and the inner top wall of the supporting box 6 is gradually reduced, the air storage bag 101 is extruded by the lifting floating plate 92, the air storage bag 101 is compressed, an air source in the air storage bag 101 flows into the telescopic air bag 102 through the branch pipe 103, the telescopic air bag 102 expands along with the gradual increase of the air source in the telescopic air bag 102, and then the telescopic air bag 102 provides a force for the side arc plate 96 to rotate towards the direction of the arc supporting plate 95 so as to enable the side arc plate 96 to be abutted against the inner top wall of the supporting box 6; the driving mode is simple in structure and convenient to operate, automatic shielding of the drain holes 62 is achieved, and energy conservation and environmental protection are achieved.

Referring to fig. 4 and 6, the blocking member 11 includes a plurality of foam pads 112 and a plurality of water-swelling water stopping columns 111, in this embodiment, the number of the foam pads 112 is the third, three foam pads 112 respectively correspond to the arc-shaped supporting plate 95 and the two side arc plates 96 one by one, three foam pads 112 are respectively adhesively fixed on the inner arc wall of the arc-shaped supporting plate 95 and the inner arc wall of the two side arc plates 96, opposite side walls of two adjacent foam pads 112 are connected through the flexible sealing plate 113, the hinged joint between the side arc plates 96 and the arc-shaped supporting plate 95 is shielded by the flexible sealing plate 113, and water is prevented from permeating into the water drainage hole 62 through the gap at the hinged joint between the arc-shaped supporting plate 95 and the side arc plates 96 as much as possible.

In this embodiment, the water-swellable water-stop columns 111 correspond to the water drainage holes 62 one by one, the water-swellable water-stop columns 111 are fixed on the side wall of the sponge pad 112, and the diameter of the water-swellable water-stop columns 111 is smaller than the aperture of the water drainage holes 62, so that the end, away from the sponge pad 112, of the water-swellable water-stop columns 111 is inserted into the water drainage holes 62; when ponding in the supporting box 6 rises, at first utilize arc layer board 95 and two side arc boards 96 extension ponding infiltration flow path in the wash port 62, if ponding when too much, ponding is kept away from between articulated one end and the interior roof of supporting box 6 and is permeated to foam-rubber cushion 112 from two side arc boards 96, through foam-rubber cushion 112, meet water inflation stagnant water post 111 with ponding direction, because meet water inflation stagnant water post 111 and meet water automatic inflation promptly, take place the inflation and block up wash port 62 through meeting water inflation stagnant water post 111 this moment, realized the automatic shutoff to wash port 62.

Referring to fig. 4 and 7, a water supply assembly 12 for supplying water to the sponge mat 112 on the side arc plate 96 is arranged on the inner top wall of the support box 6, the water supply assembly 12 comprises a water storage bag 121 and a bag breaking needle 122, a water guide hole 123 is arranged on the inner top wall of the support box 6 facing the side arc plate 96, a cavity 124 communicated with the water guide hole 123 is arranged inside the top wall of the support box 6, the water storage bag 121 is arranged in the cavity 124, the water source is filled in the water storage bag 121, the bag breaking needle 122 is arranged in the cavity 124 and is positioned on one side of the water storage bag 121, and an automatic sliding piece 13 for driving the bag breaking needle 122 to move towards the water storage bag 121 is arranged in the cavity 124; the bag breaking needle 122 is driven by the automatic sliding piece 13 to move towards the water storage bag 121, so that the bag breaking needle 122 is used for breaking the water storage bag 121, a water source in the water storage bag 121 flows to the sponge mat 112 through the water guide hole 123, the water absorption capacity of the sponge mat 112 is increased, and the water source provides a water source for the water-swelling water stop column 111 through the sponge mat 112.

In this embodiment, the cavity wall of the cavity 124 and the two sides of the water guiding hole 123 are both provided with the flow guiding blocks 125, and the longitudinal sectional area of the flow guiding block 125 increases progressively from one side close to the water guiding hole 123 to one side far away from the water guiding hole 123; after the water storage bag 121 is punctured, the water source is guided to the water guide hole 123 through the guide block 125 so that the water source can flow to the sponge mat 112 quickly, the efficiency of expanding the water-swelling stop column 111 and blocking the water discharge hole 62 is improved, and the probability of damage of the cable caused by soaking of the accumulated water is further reduced.

Referring to fig. 7, the automatic sliding member 13 includes an electromagnet 131 and a permanent magnet 132, the electromagnet 131 is fixedly disposed on a cavity wall of one side of the cavity 124, the permanent magnet 132 is disposed on a side wall of the bag breaking needle 122 away from the water storage bag 121, opposite side walls of the electromagnet 131 and the permanent magnet 132 are connected through a second spring 133, a telescopic direction of the second spring 133 is the same as an axial direction of the bag breaking needle 122, a sliding block 135 is disposed on a side wall of the cavity 124, a sliding groove 136 for the sliding block 135 to slide is disposed on the cavity wall of the cavity 124 and along the axial direction of the bag breaking needle 122, and the sliding block 135 and the sliding groove 136 are disposed to realize sliding connection between the permanent magnet 132 and the cavity wall of the cavity 124; in this embodiment, the inner top wall of the supporting box 6 facing the lifting floating plate 92 is provided with a displacement sensor 134, and the displacement sensor 134 is electrically connected with the electromagnet 131.

The distance between the lifting floating plate 92 and the inner top wall of the supporting box 6 is detected in real time by using the displacement sensor 134, when the water level in the supporting box 6 rises, the lifting floating plate 92 moves upwards, when the actual distance value between the lifting floating plate 92 and the inner top wall of the supporting box 6 reaches the preset distance value, the preset value can be the preset value when the water level of the accumulated water in the supporting box 6 reaches a higher water level, the preset distance value between the lifting floating plate 92 and the inner top wall of the supporting box 6 is reached, and then the displacement sensor 134 transmits the detected actual distance value to the PLC, the PLC performs data processing on the actual distance value, compares the actual distance value with the preset distance value, if the actual distance value reaches the preset distance value, the PLC transmits a signal to a power supply circuit of the electromagnet 131, cuts off the power supply circuit of the electromagnet 131, at this time, the electromagnet 131 loses the electromagnetic field, and further uses the elasticity of the second spring 133, promote permanent magnet 132 and to keeping away from electromagnet 131 direction and slide, and then permanent magnet 132 drives broken bag needle 122 and removes to water storage bag 121 direction to utilize broken bag needle 122 to puncture water storage bag 121, so that when the water level in supporting box 6 rises to predetermined water level height, automatic water storage bag 121 of puncturing, so that foam-rubber cushion 112 absorbs water, make water inflation stagnant water post 111 inflation and automatic shutoff wash port 62.

The implementation principle of the power cable laying process in the embodiment of the application is as follows: when accumulated water in the cable trench permeates into the supporting box 6 through the water drainage hole 63, the floating block 91 and the lifting floating plate 92 move upwards synchronously along with the gradual rise of the water level in the supporting box 6, the lifting floating plate 92 extrudes the air storage bag 101 along with the upward movement of the lifting floating plate 92, an air source in the air storage bag 101 is sent into the telescopic air bag 102 through the branch pipe 103, and at the moment, the telescopic air bag 102 expands and drives the side arc plate 96 to rotate towards the arc supporting plate 95; when the floating plate 92 moves upwards, the detected actual distance value is transmitted to the PLC controller by using the displacement sensor 134, the PLC controller processes data of the actual distance value and compares the actual distance value with the preset distance value, if the actual distance value reaches the preset distance value, the PLC controller sends a signal to the power supply circuit of the electromagnet 131 to cut off the power supply circuit of the electromagnet 131, the electromagnet 131 loses an electromagnetic field, the permanent magnet 132 is pushed to slide in the direction away from the electromagnet 131 by using the elasticity of the second spring 133, the permanent magnet 132 drives the bag breaking needle 122 to move towards the water storage bag 121, so that the water storage bag 121 is broken by using the bag breaking needle 122, when the water level in the supporting box 6 rises to the preset water level height, the water storage bag 121 is automatically broken, so that the sponge mat 112 absorbs water, the water swelling water stopping column 111 is swelled and the water discharging hole 62 is automatically blocked, the anti-seeping bracket helps to prevent seeper from permeating into the arc-shaped bracket 61 through the drain hole 62, avoids the cable from being soaked by the seeper to cause expansion and damage as much as possible, prolongs the service life of the cable, and is energy-saving and environment-friendly.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A power cable laying process is characterized by comprising the following steps:

determining a laying path of a cable according to a cable laying scheme and field conditions, and digging a laying groove (1) on a ground layer;

paving a gravel bottom layer (2) on the bottom wall of a laying groove (1), installing a steel bar framework (3) on the gravel bottom layer (2), wherein the steel bar framework (3) is composed of a horizontal net (31) and two oppositely arranged vertical nets (32), the horizontal net (31) is fixedly connected between opposite side walls of the two vertical nets (32), the horizontal net (31) is fixedly inserted on the gravel bottom layer (2) through a plurality of installation stand columns (33), one ends of the installation columns extend out of the side walls of the horizontal net (31) far away from the gravel bottom layer (2), impervious spaces are reserved between the side walls of the vertical nets (32) and the side walls of a cable trench, and paving a gravel layer (4) in the impervious spaces;

respectively carrying out impervious concrete layer plastering construction on the side wall of the horizontal net (31) far away from the gravel bottom layer (2) and the side wall of the vertical net (32) far away from the impervious gravel layer (4) to form a cable trench;

the method comprises the following steps that a support box (6) is fixedly installed on a plurality of installation stand columns (33), an arc-shaped bracket (61) used for supporting cables is arranged on the top wall of the support box (6), the cables are fixed in the arc-shaped bracket (61) through a fixing component (7), a plurality of drain holes (62) communicated with the interior of the support box (6) are formed in the wall of the arc-shaped bracket (61), a plurality of drain holes (63) are formed in the bottom wall of the support box (6), and an anti-seepage component (9) used for plugging the drain holes (62) is arranged in the support box (6);

backfilling soil in the cable trench to finish the laying of the cable;

the anti-seepage assembly (9) comprises a floating block (91), two side walls of the floating block (91) are respectively provided with a lifting floating plate (92), the inner side wall of the supporting box (6) is provided with a lifting groove (93) along the height direction of the supporting box, one end, far away from the floating block (91), of the lifting floating plate (92) slides in the lifting groove (93), the top wall of the floating block (91) is provided with a vertical rod (94), one end, far away from the floating block (91), of the vertical rod (94) is provided with an arc-shaped supporting plate (95), two side walls of the arc-shaped supporting plate (95) are respectively hinged and connected with a side arc plate (96), the inner arc wall of the arc-shaped supporting plate (95) faces towards the arc-shaped supporting groove (61), a driving piece (10) used for driving the side arc plate (96) to rotate towards the arc-shaped supporting plate (95) far away from the hinged end is arranged on the lifting floating plate (92), and the inner arc wall of the side arc plate (96) faces towards the arc-shaped supporting groove (61), the inner arc wall of the arc-shaped supporting plate (95) and the inner arc wall of the side arc plate (96) are inserted into the drainage hole (62) through the plugging piece (11);

the driving piece (10) comprises two air storage bags (101), the two air storage bags (101) are respectively in one-to-one correspondence with the two lifting floating plates (92), the air storage bags (101) are arranged between the top walls of the lifting floating plates (92) and the inner top wall of the supporting box (6) in a gluing mode, telescopic air bags (102) are arranged between the outer arc walls of the two side arc plates (96) and the top wall of the floating block (91) in a gluing mode, the two air storage bags (101) are respectively in one-to-one correspondence with the two telescopic air bags (102), and the air storage bags (101) and the telescopic air bags (102) are communicated with each other through branch pipes (103);

blocking piece (11) include a plurality of water inflation stagnant water post (111), and are a plurality of water inflation stagnant water post (111) respectively with a plurality of wash port (62) one-to-one, the interior arc wall of arc layer board (95) and the interior arc wall of side arc board (96) all are equipped with foam-rubber cushion (112), adjacent two link to each other through sealed flexbile plate between foam-rubber cushion (112), water inflation stagnant water post (111) sets up on the lateral wall of foam-rubber cushion (112), water inflation stagnant water post (111) is used for inserting and establishes in wash port (62), the diameter of water inflation stagnant water post (111) is less than the aperture of wash port (62).

2. A power cabling process according to claim 1, wherein: the fixing assembly (7) comprises a pressing cover plate (71), a plurality of rubber insertion blocks (72) are uniformly distributed on two sides of the top wall of the supporting box (6) along the length direction of the supporting box, movable grooves (73) used for accommodating the rubber insertion blocks (72) are formed in the top wall of the supporting box (6), inserting slots (74) for inserting the rubber insertion blocks (72) into partial side walls of the pressing cover plate (71) are formed in the bottom wall of the pressing cover plate (71), telescopic pieces (8) used for inserting the rubber insertion blocks (72) into the inserting slots (74) are arranged on the side walls of the supporting box (6), pressing grooves (75) matched with cables are formed in the side walls of the pressing cover plate (71) facing the arc-shaped supporting grooves (61), and bolts (76) used for fixing the rubber insertion blocks (72) into the inserting slots (74) are arranged on the side walls of the pressing cover plate (71).

3. A power cabling process according to claim 2, wherein: the telescopic piece (8) comprises a pulling plate (81), a pulling rod (82), a first spring (83) and a plurality of telescopic blocks (84), a telescopic groove (85) communicated with a plurality of movable grooves (73) is arranged in the side wall of the supporting box (6), the pulling plate (81) is arranged in the telescopic groove (85), a pulling hole (86) communicated with the telescopic groove (85) is formed in the outer wall of the supporting box (6), one end of the pulling rod (82) is abutted to the outer wall of the supporting box (6) through a pulling handle (88), the other end of the pulling rod (82) penetrates through the pulling hole (86) and extends into the telescopic groove (85) to be connected with the pulling plate (81), the first spring (83) is sleeved on the pulling rod (82), one end of the first spring (83) is connected with the groove wall of the telescopic groove (85), the other end of the first spring (83) is connected with the side wall of the pulling plate (81), and the telescopic blocks (84) are arranged on the side wall of the pulling plate (81), a plurality of flexible piece (84) respectively with a plurality of rubber inserted block (72) one-to-one, slide between flexible piece (84) and the rubber inserted block (72) and be connected, the relative lateral wall of flexible piece (84) and rubber inserted block (72) all is equipped with the inclined plane (87) that slides of mutually supporting.

4. A power cabling process according to claim 2, wherein: the top wall of the supporting box (6) is abutted against the bottom wall of the pressing cover plate (71) through a sealing waterproof plate (77).

5. A power cabling process according to claim 1, wherein: the inner top wall of the supporting box (6) is provided with a water supply assembly (12) used for providing a water source for a sponge mat (112) on the side arc plate (96), the water supply assembly (12) comprises a water storage bag (121) and a bag breaking needle (122), the inner top wall of the supporting box (6) is provided with a water guide hole (123), a cavity (124) communicated with the water guide hole (123) is arranged inside the top wall of the supporting box (6), the water storage bag (121) is arranged in the cavity (124), and an automatic sliding piece (13) used for driving the bag breaking needle (122) to move towards the water storage bag (121) is arranged in the cavity (124).

6. A power cabling process according to claim 5, wherein: the automatic sliding piece (13) comprises an electromagnet (131), a permanent magnet (132), a second spring (133) and a displacement sensor (134), the electromagnet (131) is fixed on the cavity wall of the cavity (124), the permanent magnet (132) is arranged at one end, far away from the water storage bag (121), of the bag breaking needle (122), the second spring (133) is arranged between opposite side walls of the electromagnet (131) and the permanent magnet (132), a sliding block (135) is arranged on the side wall of the permanent magnet (132), a sliding groove (136) for the sliding block (135) to slide is arranged on the cavity wall of the cavity (124), the displacement sensor (134) is arranged on the inner bottom wall of the supporting box (6) and located on one side of the water guide hole (123), and the displacement sensor (134) is electrically connected with the electromagnet (131).

7. A power cabling process according to claim 5, wherein: flow guide blocks (125) are arranged on the wall of the cavity (124) and on two sides of the water guide hole (123), and the longitudinal sectional area of each flow guide block (125) is gradually increased from one side close to the water guide hole (123) to one side far away from the water guide hole (123).