304results about "Cable installations in tunnels" patented technology

The invention discloses a miniature crawler-type cable tunnel patrol robot, which relates to a robot capable of realizing cable tunnel/pipeline patrolling. The robot consists of two independent crawlers, a substrate, a posture setting mechanism, a camera with a holder, and a sensor. The posture setting mechanism is arranged in the substrate. The camera with the holder is arranged on the substrate. The two crawlers are positioned on the left and right sides of the substrate respectively, and are in rotational connection with driving connecting rods on the substrate and the posture setting mechanism by two groups of shafts respectively. The sensor is arranged on the substrate. The left and right independently driven crawlers are adopted, and a posture included angle formed by the two groups of crawlers can be set, so the robot can be adapted to either the smooth-riding surfaces of cable tunnels or the arched surfaces of pipelines of different diameters by regulating the posture included angle, and realizes advancing, stepping-back and various turning motions by controlling the motions of the left and right crawlers. The robot realizes the automatic patrolling of underground transmission lines.

The invention discloses an orbit-change mechanism control system for an electric power tunnel inspection robot and a control method. According to the orbit-change mechanism control system, an inspection robot communicates with an orbit-change control unit through a tunnel wireless network; the orbit-change control unit comprises a local control box, a motor driver, a motor, a control feedback sensor and an orbit-change device; the local control box, the motor driver and the motor are sequentially connected; the motor is connected with the orbit-change device; the control feedback sensor is connected with the orbit-change device and the local control box respectively; and the orbit-change device is arranged on a junction of a tunnel. The orbit-change mechanism control system and the control method have the beneficial effects that monitoring equipment can move along a fixed orbit in the tunnel and can automatically adjust a changeable orbit for inspection path selection; the defects that fixed monitoring can only be carried out at a fixed point and short-distance operation cannot carried out are really avoided; and visual inspection in a real sense is implemented on a tunnel body and a cable in the tunnel.

The invention discloses tunnel ring-shaped layout of a cable with a large cross-section, which comprises a cable tunnel with a circular section. Along the periphery of the circular cable tunnel, the cable is arranged; the cable tunnel is provided with ring-shaped cable brackets in the axial direction and at intervals; the ring-shaped cable brackets are connected with cable fixing clamps; and the cable fixing clamps are used for clamping the cable. The structure of the ring-shaped layout overcomes the defect of adopting the inner space of the tunnel of the original cable tunnel layout, and the cable is arranged along the inner wall of the circular tunnel. On one hand, the circumferential perimeter is fully used for the cable layout, thereby increasing the cable layout loop. On the other hand, the inner space of the tunnel is released, thereby increasing the utilization rate of the inner space of the tunnel. The released inner space of the tunnel can be used for cable layout again (horizontal layout or vertical layout), and simultaneously can be used as the walkway, and is convenient for maintenance.

The invention relates to a cable mounting and fixing bracket. The cable mounting and fixing bracket comprises a vertical column (1) and is characterized in that at least one cross beam (2) is movably connected to the vertical column; at least one clamping seat (3) is fixedly connected to each cross beam; each clamping seat comprises a base (4) with which a pressing block (7) is movably connected in match; a group of springs (8) is arranged between each base and each pressing block; a pressing cover (5) which is movably connected in match with another pressing block (7) is also connected in match with each base; the two pressing blocks are correspondingly in match; and another group of springs is also connected in match between each pressing cover and each pressing block. The cable mounting and fixing bracket has the advantages that the operation is convenient, efficient and safe; a fixing seat is used, so that the cable can be stably fixed; the cross beam of different length can be selected according to the actual demand, and the position of the cross beam on the vertical column can be adjusted at random; the cross beams of the same color can be selected on different brackets during mounting the same cable, thus the marking is convenient to repair; and the cross beams are movably connected.

The invention provides a high-strength and flame-retardation thermoplastic composite material for a subway tunnel platform. The composite material comprises a component A and 40-60 parts by weight of a component B which is glass fibers, and the component A comprises 100 parts by weight of a thermoplastic resin, 10-20 parts by weight of a flame retardant, 2-5 parts by weight of a flame retardation synergist, 5-10 parts by weight of a flexibilizer and 0.1-1.0 part by weight of an antioxidant. The subway tunnel platform made through using the sheet of the composite material has a high strength, and can guarantee no fracture or collapse in the people walking process. The composite material has a very good flame retardation property and can guarantee the cable safety and the fireproof safety. Compared with steel, the composite sheet has the advantages of light weight, high strength, corrosion resistance, easy replacement and the like. Compared with a thermosetting composite material, the thermoplastic composite material has the advantages of good low temperature toughness, good safety and good reliability. The invention also provides a preparation method of the composite sheet, and the subway tunnel platform using the composite sheet.

The invention belongs to the field of technical facilities for laying power cables in cable trenches, and relates to a foldable cable support which is installed in a cable trench. The foldable cable support comprises a cable support body, and is characterized in that the cable support body is fixedly provided with connecting rods which are parallel to the wall of cable trench, each connecting rod is connected with the cable supporting rod perpendicular to the wall of the cable trench through a rotating shaft, a limiting block is arranged above the non-cantilever end of each cable supporting rod at one side of the rotating shaft, and the limiting blocks are fixed on the cable support body; and the surface, which is fixed with the wall of the cable trench, of the cable support body is provided with support fixing bolts. The foldable cable support is reasonable in structural design, the original fixed horizontal cable support is designed to be foldable, and the horizontal cable supporting rods can rotate upwards and be retracted until being perpendicular to the ground before cable laying or during cable troubleshooting, thereby expanding the activity space in the cable trench to be maximum extent, and providing convenience for movements of the maintenance personnel in the trench and entrance of maintenance equipment.

The invention relates to the field of underground space construction, in particular to a method for protecting an electric power pipe culvert by adopting upper suspension and lower support double in-situ protection. According to the method, the upper suspension and lower support double in-situ protection is adopted, the electric power pipe culvert firstly adopts Bailey beam suspension protection,then a cover plate and a cover plate beam are constructed and poured, and finally, the Bailey beam suspension and cover plate beam support double protection measures for the electric power pipe culvert are taken. The method has the advantages that construction delay and cost increase caused by migration of an electric power pipeline are avoided, so that uninterruptible power can be guaranteed in the electric power line protection and underground engineering construction processes, and the social influence is greatly reduced.

The invention discloses an electric hoisting bracket for a vertical column type cable in a cable tunnel. The electric hoisting bracket comprises a stand column, a motor and a rope, wherein a first fixing waist ring, a bolt hole, a second fixing waist ring, a third fixing waist ring and a fourth fixing waist ring are arranged on the stand column. A fixing bolt is arranged on the second fixing waistring, a lifting rod and a first pulley are arranged on the third fixing waist ring, the lifting rod is provided with an adjusting ring, a second pulley and a first connecting ring, and the first connecting ring is connected with a second connecting ring on the fourth fixing waist ring through an auxiliary rope, the bottom end of the stand column is connected with a base, the motor is connected tothe base, the motor is connected with a rolling shaft, the rope is arranged on the rolling shaft, the rope sequentially penetrates through a rope guiding ring, the first pulley, the adjusting ring and the second pulley and is connected with the lifting ring, and the lifting ring is vertically downward to form a single lifting ring, or the lifting ring is connected with the adjusting ring and a movable pulley is arranged on the rope to form a double-suspension ring. According to the electric hoisting bracket, the labor intensity is reduced, and the construction efficiency is improved.

An electric cable saddle, or support, arrangement includes a housing having an upper recessed portion adapted to receive and support one or more electrical cables in a fixed, stable manner. Plural apertures disposed on upper portions of the housing on opposed sides of the cable(s) and aligned generally transverse to the length of the cable(s) are adapted to receive a flexible, high strength tie member, or strap, for securely attaching the cable(s) to an upper portion of the housing. A slot disposed in a lower portion of the housing and also aligned generally transverse to the length of the cables(s) is adapted to receive a structural support member for supporting the housing and cable(s). A retaining member also disposed in a lower portion of the housing is moveable adjacent to or into engagement with the support member for fixed positioning of the housing on the support member.

The invention relates to a cable operation heat environment-based city pipe gallery type cable tunnel ventilation design method. The method comprises the steps of 1) building a cable temperature field mathematic model; 2) calculating and analyzing a temperature field and current-carrying capacity of a cable; and 3) designing a cable tunnel ventilation system, wherein the step 1) specifically comprises the sub-steps of S11, building a cable trench geometric model; S12, obtaining cable parameters; S13, based on the steps S11 and S12, building the cable temperature field mathematic model. Compared with the prior art, the method has the advantages of clear logic structure, practicality, rationality and the like.

An isolator for mounting cable hangers, comprising: a platform having a hole; two extenders extending away from the bottom surface of the platform; and two locking clips, wherein each locking clip extends from an extender in a direction that is away from the bottom surface of the platform.

The invention relates to a bearer inlaid with a tunnel cable, which is a safe tunnel cable bearer and an installation method thereof. The key design points of the safe tunnel cable bearer are that: afixed bracket and a retaining spring form a frame; a supporting arm is arranged on a connecting body of a base of the fixed bracket; a circular arc supporting surface is arranged between the supporting arm and the base; one end part of the circular arc supporting surface is provided with a button hole, and the middle part thereof is provided with a catching groove; the button hole and the catchinggroove are connected with each other by the retaining spring; one end of the base is provided with a base hole for fixing the fixed bracket and a bottom seat which is provided with a bottom seat holefor connecting and fixing the bottom seat and the wall of the tunnel; or the base is not provided with the base hole and is provided with a protruding part, and the base and the bottom seat are connected with each other in an inlaid way; and the circular arc supporting surface is arranged for the laying of the cable, or the supporting arm is not provided with the supporting surface and is provided with an elastic circular arc open slot, and the cable is pressed into the slot. In the invention, the structural design is reasonable, the safety is good, the fastening is quick, the installation and maintenance are convenient, the installation method is feasible, and the safety performance for laying the tunnel cable is improved.

The invention relates to the technical field of tunnel cable installation, in particular to a power tunnel cable rack. The rack comprises a rack body, the rack body comprises a stand column and a plurality of supporting arms. The multiple supporting arms are evenly arranged on the stand column in the vertical direction. The plurality of supporting arms are horizontally arranged; the rack body further comprises a plurality of adjusting pieces and a plurality of connecting pieces, the adjusting pieces and the connecting pieces are arranged in the stand column in a stacked mode in the vertical direction, at least two adjusting pieces are arranged between every two adjacent connecting pieces, and the supporting arms are rotationally arranged on the connecting pieces and attached to the adjusting pieces close to one side of the stand column. The power tunnel cable rack has the effects of being convenient to operate and simple in construction.

The invention discloses an underground comprehensive pipe gallery and an internal communication cable pipe supporting mechanism thereof. A mounting cross beam is welded to the edge end of the mountingwall plate; square slots are formed in the mounting cross beam at equal intervals; a connecting seat is connected with the square slots in the corresponding positions in an inserting manner through square inserting columns at the bottom ends of the connecting seat; a reinforcing support plate is fixedly mounted on one side, close to the square insertion column, of the bottom of the cable support;through mounting wall plates, fastening rivets, a mounting cross beam, the square inserting grooves, the limiting grooves, the connecting bases, the square inserting columns, the limiting blocks, acable support and a reinforcing supporting plate, when the pipe gallery support is mounted, the mounting cross beam can be fixedly connected with the inner wall of the pipe gallery through fixing connection between the mounting wall plates and the inner wall of the pipe gallery; and by means of the mode, the stability is high after installation, meanwhile, the installation mode of a traditional pre-buried welding method and an expansion bolt method is replaced, and the pipe gallery support is easier and more convenient to install.

The invention relates to a prefabricated power tunnel and a mounting method thereof. The prefabricated power tunnel comprises a plurality of series box culverts, wherein in two adjacent box culverts, a tenon is arranged at the adjacent end of one box culvert; a mortice matched with the tenon is formed in the adjacent end of the other box culvert; a stepped bump is arranged on the tenon; a stepped groove matched with the stepped bump is formed in the mortice; and the tenon and the mortice are nested. The two adjacent box culverts are lapped together by applying pre-stress on a construction site for tensioning. According to the invention, the power tunnel can be directly produced and prefabricated on the construction site.

The invention discloses a power tunnel cable support. The power tunnel cable support comprises a fixed plate, an arc cable support body, support rods and backstop rods, wherein a tangential direction of a middle point of the cable support body is vertically arranged, one end of the cable support body is fixedly connected with one end of the fixed plate, a plurality of threaded holes are horizontally formed in an arc camber surface of the cable support body, one end of each support rod is fixedly connected with threaded rods matched with the threaded hole, the other ends of the support rods are rotatably connected with the backstop rods, the threaded rods are arranged in the threaded holes, the lower surface of the fixed plate is inwards sunken to form a groove, a support leg is connected to the groove and can rotate by taking an axial line as a shaft, the axial line is arranged on the same horizontal plane with the lower surface of the support leg and is perpendicular to the length direction of the support leg, a bolt is further arranged on the fixed plate, and the support leg can be fixed on the fixed plate by adjusting the bolt. By the power tunnel cable rack, the problems that the support is poor in stability, a power transmission cable is easy to be separated from the support, and the end part of a cross rod of the support is sharp and directly faces the middle of a power tunnel to easily cause a construction worker to be hurt in the prior art are solved.

A multifunctional high-voltage cable hoisting and laying guide arm comprises a revolving body assembly providing a revolving effect, a stand column assembly providing a supporting effect, a folding arm assembly, a multi-stage telescopic arm assembly, an auxiliary lengthening arm, a hanging basket assembly for an operator to work high above the ground and a control device. The lower part of the revolving body assembly is fixed on an external movable vehicle body, the upper end of the revolving body assembly is fixed at the lower end of the stand column assembly; the two ends of the folding armassembly are hinged to the fixed stand column assembly and the multi-stage telescopic arm assembly correspondingly. A folding control oil cylinder is arranged between the folding arm assembly and therevolving body assembly or the stand column assembly, a folding arm oil cylinder is fixedly installed at one side of the folding arm assembly, the telescopic end of the folding arm oil cylinder is fixed to a multi-stage telescopic arm oil cylinder lug, a multi-stage telescopic arm built-in oil cylinder drives the telescopic arm to stretch out and draw back, and the front end of the auxiliary lengthening arm is fixedly connected with the tail end of the multi-stage telescopic arm assembly. Barrier-free cable laying is achieved, the aerial work requirement is met, auxiliary personnel are reduced, and mechanical work is achieved.

The invention discloses a cable mounting bracket. The cable mounting bracket comprises a fixed base, at least one supporting arm and at least one fixed pin, wherein a first pin hole for allowing the corresponding fixed pin to pass through in a matching manner is formed in the fixed base; a second pin hole for allowing the corresponding fixed pin to pass through in a matching manner is formed in each supporting arm; and the fixed base and the supporting arms are arranged in the first pin hole and the second pin holes through the corresponding fixed pins in a penetration manner, and are perpendicularly arranged. The invention also discloses a mounting method for the cable mounting bracket. The cable mounting bracket has excellent electrical property and corrosion resistance, light weight, and high strength; and meanwhile, the mounting method is simple and easy to implement, and the construction is simple.

The invention provides a cable fixing method at a connecting position of a cable shaft well and a cable tunnel. According to the method, a supporting plane of fixing media is adjusted, so that the supporting is fit with a cable accommodating plane to fix cables and prevent the cables from large bending and non-uniform bearing. The invention also provides a cable fixing device. The cable fixing device comprises a group of support, each group of support comprises columns and fixing media between the columns, the columns are arranged between cable tunnels of a transitional area, and at least three fixing media are arranged so that the cable accommodating plane is fit with the supporting plane. The cables are effectively, rapidly and conveniently fixed at the connecting position of the cables, the cables are effectively protected, the construction safety is improved, and the construction cost is reduced. The cable fixing device is high in versatility, high in flexibility and convenient to operate and use, so that transition of cables from the cable tunnels to the cable shaft well is realized, and cables are rapidly and stably laid in construction.

The invention relates to a large-section cable clamp, which comprises an upper clamp part and a lower clamp part. The upper clamp part and the lower clamp part are provided with corresponding bolt holes and fixedly connected with each other through connecting bolts. Compared with the prior art, the large-section cable clamp has high space utilization rate for tunnel sections, meets cable laying requirements of different applications, is applicable to cable supporting and cable protection for long ways, work wells, climb segments, cable connectors, accesses and the like, is suitable for clamping large-section cables with large section, high current carrying capacity, heavy weight and bending resistance, and is of guiding significance for use of clamps in cable works.

The invention relates to a tunnel cable automatic laying robot and an application method thereof, which belong to the technical field of power system infrastructure equipment. The tunnel cable automatic laying robot is characterized by comprising a control unit, a motion unit (2), a wireless transmission unit, a visual unit, a traction unit (5) and a power supply (6), wherein the visual unit, the wireless transmission unit and the control unit are connected in sequence to form a robot head portion ( 134), the robot head portion (134), the motion unit (2), the power supply (6) and the traction unit (5) are sequentially arranged in serpentine shape, the control unit and the motion unit (2) are interconnected by means of a CAN bus, and the control unit, the motion unit (2) and the traction unit (5) are each connected with the power supply (6). The tunnel cable automatic laying robot and the application method thereof have the beneficial effects that: the passing ability of the robot in laying the cable is greatly improved by utilizing the serpentine robot, the robot can even climb through some narrow slots, the robot is safe and reliable, the cost is saved and the efficiency is improved.

The invention discloses transport installation equipment of a multilayer transmission pipeline. The transport installation equipment comprises a transport vehicle and multiple dragging and dropping supports, wherein the transport vehicle comprises a support main body and two driver's cabs arranged at the initial end and the tail end of the support main body; the multiple dragging and dropping supports are successively distributed along the extending direction of the support main body; each dragging and dropping support comprises a frame body and a driving portion, the frame bodies are arranged on the support main body through the driving portions, each frame body comprises multiple pipe positions successively distributed in a vertical direction; each driving portion comprises a translation driving mechanism and an elevating driving mechanism; and the bottom ends of the elevating driving mechanisms are arranged on the support main body, the top ends of the elevating driving mechanisms are elevating telescoping ends, the elevating telescoping ends are connected with translation fixation ends of the translation driving mechanisms, translation telescoping ends of the translation driving mechanisms are connected with the dragging and dropping supports, and the bottom ends of the elevating driving mechanisms can rotate relative to the support main body so as to adjust the dragging and dropping supports to rotate at least 180 degrees in a horizontal plane. According to the scheme, the problem of great difficulty in transport installation of the multilayer transmission pipeline in a tunnel at present can be solved.