332results about "Cable installations in underground tubes" patented technology

The utility model discloses a pressure-resistant MPP electric power pipe, which comprises an inner pipeline and a buffer pressure-resistant outer pipe, the buffer pressure-resistant outer pipe is sleeved on the outer wall of the inner pipeline, the buffer pressure-resistant outer pipe comprises a connecting pipe and a protective pipe, the connecting pipe is slidably connected on the outer wall of the inner pipeline, a buffer cavity is formed between the protective pipe and the outer wall of the connecting pipe, and the protective pipe is sleeved on the buffer cavity. A plurality of evenly-distributed arc-shaped buffer plates and buffer pipes are fixedly connected into the buffer cavity, the arc-shaped buffer plates are arranged at equal intervals and fixedly connected with the outer wall of the connecting pipe, the outer surfaces of the arc-shaped ends of the arc-shaped buffer plates abut against the inner wall of the protective pipe, and the buffer pipes are arranged between every two adjacent arc-shaped buffer plates. The buffer pipes are fixedly connected with the two adjacent arc-shaped buffer plates and abut against the inner wall of the protection pipe. The arc-shaped buffer plates and the buffer pipes which are uniformly distributed are arranged in the buffer cavity, so that external pressure borne by the protective pipe can be effectively absorbed and dispersed, and deformation and fracture caused by the fact that the local part of the inner pipeline suffers from the external pressure are reduced.

An information management system configured to calculate a length of a duct in which a cable is to be installed. The system includes: an acquisition circuitry configured to acquire first position information after the duct is installed; and a calculator configured to calculate the length of the installed duct based on the first position information. A first code is attached to a first end in a longitudinal direction of the duct. The first position information indicates a position of the first end, and the first code stores the first position information.

The invention belongs to the technical field of electric power protective sleeves, and discloses an environment-friendly PVC electric power protective sleeve which comprises a sleeve, a connecting sleeve and an auxiliary assembly are installed on the protective sleeve, the two ends of the protective sleeve are provided with an inserting end and a socket end respectively, the tail ends of the inserting end and the socket end are provided with limiting tables, fixing holes are formed in the limiting tables, and the fixing holes are communicated with the connecting sleeve. A first inserting groove and a second inserting groove are formed in the two ends of the connecting sleeve, a bearing groove is formed in an inner cavity of the connecting sleeve, a guide wheel is installed in an inner cavity of the bearing groove, the first inserting groove and the second inserting groove are connected with the inserting end and the socket end in an inserted mode respectively, and the auxiliary assembly comprises an inner insulating layer and a heat absorbing plate. According to the core technical scheme, the environment-friendly PVC electric power protective sleeve comprises a protective sleeve body, a connecting sleeve and an auxiliary protective heat dissipation assembly, all the assemblies cooperate with one another, and integration of multiple functions of protection, heat dissipation and connection is achieved.

The application discloses a cable support for electrical construction and relates to the technical field of cable supports.The cable support comprises a support stand column, a horizontal supporting arm installed on the support stand column, a vertical supporting arm installed on the horizontal supporting arm and an electric telescopic rod arranged on the support stand column.The application places the placing arc plate above the upper area of the ground on both sides of the cable trench, and at this time, the cable can be installed on the flexible rolling wheels on the inner arc surface of the placing arc plate.The flexible rolling wheels can prevent the cable surface from being damaged by abrasion, can enable the cable to be laid at the ground level, can make the installation of the cable safer, can greatly improve the efficiency, can enable multiple cables to be arranged neatly above the ground at one time, can be lowered synchronously, can be arranged more regularly, can limit the radial shaking and twisting of the cables, can prevent the cables from being arched upward during the in-place lowering process and from swinging left and right and being twisted during the lowering process, and can make the cable center line coincide with the support installation reference.

The utility model relates to the field of detection line leading-out devices, in particular to a detection line leading-out device for an underground pipe network, which comprises a shell, a detection line, a joint and a pipeline, the lower end of the shell is fixedly connected with a supporting assembly, the lower end of the supporting assembly is slidably connected with a clamping assembly, and the outer side of the supporting assembly is sleeved with a clamping assembly. According to the underground pipe network detection line leading-out device, the clamping assembly is arranged, so that the time required for dismounting and mounting the underground pipe network detection line leading-out device can be shortened, the operation convenience of workers is improved, and the detection efficiency is improved; according to the utility model, the supporting assembly and the clamping assembly are arranged, and the supporting assembly and the clamping assembly are used cooperatively, so that the detection line can be fixed in the embedding groove formed in the outer side of the supporting column, the detection line is prevented from loosening, the detection precision and accuracy are prevented from being influenced, and the maintenance difficulty is reduced.

The utility model relates to the technical field of cable channels, in particular to an anti-frost-heaving cable channel with a high-efficiency thermal insulation layer, which prevents a cable from shaking in the channel, avoids abrasion of a sheath due to external force influence, and reduces the probability of faults such as short circuit. Comprising a channel wall which is buried underground; the clamping mechanism is arranged in the channel wall and is used for fixing the cable; the detection mechanism is arranged in the channel wall and is used for detecting the state of the cable; the clamping mechanism comprises a support frame fixedly mounted in the channel wall; the mounting base plate is fixedly mounted on the supporting frame; the clamping ring is rotationally arranged on the mounting base plate; the screw rods are circumferentially and uniformly arranged on the clamping ring, and the screw rods are in threaded fit with the clamping ring; and the number of the clamping plates is equal to that of the screw rods, and each screw rod is rotationally provided with one clamping plate.

The utility model discloses an anti-slip cable trench comprising a cable trench main body which is provided with a cable trench; the drainage ditch is connected to the first side part of the cable trench main body, and the drainage ditch is provided with a drainage ditch groove; the number of the anti-skid bodies is multiple, the multiple anti-skid bodies are arranged at intervals in the length direction of the cable trench main body, each anti-skid body comprises a first anti-skid part connected to the first side part of the cable trench main body and a second anti-skid part connected to the bottom of the cable trench main body, the first anti-skid part is provided with a first drainage channel communicated with the drainage groove, and the second anti-skid part is provided with a second drainage channel communicated with the drainage groove. The second anti-skid part is provided with a second drainage channel communicated with the first drainage channel, and the second drainage channel is further communicated with the cable groove. The anti-slip cable trench can improve the anti-slip effect and reduce the risk of water accumulation.

The application discloses a pipeline worm cooperation type pipeline back dragging method, which comprises the following steps: a, construction of a guide hole, including a guide entry hole, a guide hole channel and a guide exit hole, and hole cleaning work; b, preparation of a back dragging pipeline on the ground, and preparation of a pipeline worm, connection of the pipeline worm and the back dragging pipeline through a buckle, connection of a reamer and a drill rod at the other end of the pipeline worm; the drill rod, the reamer, the pipeline worm and the back dragging pipeline enter the guide entry hole, and then the drill rod pulls the reamer, the pipeline worm and the back dragging pipeline to conduct pipeline back dragging in the guide hole channel. The pipeline worm cooperation type back dragging can reduce anticorrosive layer damage, ensure smooth pipeline entry into a hole, reduce construction risks such as drill tool fracture, and can play a lever role to avoid pipe clamping caused by a non-smooth hole curve, improve one-time back dragging success rate, indirectly protect an ecological environment, shorten a construction period and reduce engineering cost.

The utility model relates to the field of power cables, in particular to a plastic conduit convenient for positioning and splicing for a power cable, which comprises a main plastic conduit body used for sleeving and protecting the power cable; and the first connecting kit is fixed at one end of the main plastic conduit body and is used for splicing, and one end of the main plastic conduit body is movably butted with an auxiliary plastic conduit body. According to the power cable plastic guide pipe convenient to position and splice, through the arrangement of the main plastic guide pipe body, the first connecting sleeve piece, the auxiliary plastic guide pipe body, the second connecting sleeve piece, the butt joint block, the butt joint plate and the bolt, when splicing is needed, the main plastic guide pipe body and the second connecting sleeve piece are connected; the butt joint plates on the two sides of the second connecting sleeve piece at one end of the auxiliary plastic guide pipe body are inserted into the butt joint blocks of the first connecting sleeve piece at the other end of the main plastic guide pipe body to form positioning butt joint, then the bolts penetrate through the butt joint blocks and the butt joint plates, the main plastic guide pipe body and the auxiliary plastic guide pipe body are conveniently spliced, and compared with traditional hot melting, the splicing is faster.

The utility model discloses a multifunctional comprehensive pipe gallery cable support, including the support seat, the support seat top fixedly connected with the top board, the top board outside has integrated the limiting component for cable limiting. In this application, choose the cable from the longitudinal end directly through the support seat or from the side gap combination support seat after, the cable is overlapped on the tripod, rotates the push rod and makes it with the top board screw, and the push rod pushes the pressing plate and slides along the vertical groove, until the pressing plate is pressed in the cable outer surface wall, finally in the turnover open board and makes it with the top board fixed, to this realizes the support positioning of cable, the setting of tripod, can make the boss adapt to the cable of different size, and the design of open board is the combination mode of cable and support seat, makes the cable can be more convenient combination to the support seat, and the guide roller integrated on the inclined end of tripod, has reduced the wear and tear of cable with the tripod in the process of completing wiring, guarantees the stability of cable wiring simultaneously.

The utility model discloses an urban planning underground comprehensive pipe gallery which comprises a pipe gallery body, and multiple layers of cable supporting assemblies are installed on installation base plates on the two sides in a combined mode. The beneficial effects of the utility model are that the supporting seat of the cable supporting assembly is in sliding fit with the U-shaped clamping seat, and the limiting rod is in longitudinal sliding fit with the limiting hole, so that the supporting seat can be detachably and transversely combined at the side position of the pipe gallery body; meanwhile, after the limiting rods are longitudinally separated from the limiting holes, the supporting seats can vertically slide downwards and be separated from the U-shaped clamping seats, so that the supporting seats can be detached from the side positions of the pipe gallery body, and the combination and detachment modes of the supporting seats on the side positions of the pipe gallery body are simple and easy to achieve; the supporting seat can be conveniently and rapidly combined on the side portion of the pipe gallery body to carry and support the cable, meanwhile, the fault position of the cable can be smoothly exposed after the supporting seat is conveniently and rapidly detached from the lower portion of the cable subsequently, and the cable can be conveniently overhauled and maintained.

The utility model relates to the technical field of cable protection tubes, in particular to a hexagonal cable protection tube with strong compression resistance, which comprises tube bodies, a screw sleeve and a connecting sleeve are respectively embedded at two ends of each tube body, a connecting tube head is integrally formed at one end of each connecting sleeve and is matched with the screw sleeve, and when the two tube bodies are connected end to end, the screw sleeve is connected with the connecting tube head. Notches are formed in the ends, connected with the pipe bodies in a screwed mode, of the screw sleeves and the connecting pipe heads, half studs are fixed in the notches, after the two pipe bodies are connected end to end, the half studs at the ends of the two pipe bodies are spliced into a stud, and the stud is sleeved with a nut in a screwed mode; the utility model has the beneficial effects that the screw sleeve and the connecting sleeve are respectively embedded at the two ends, and the end-to-end connection of the two pipe bodies is realized through threaded connection. The connecting mode is simple and easy to implement, and tight connection between the two pipe bodies can be ensured. In addition, the notch is formed in the end of the pipe body, the half stud is fixed, and then the nut is arranged in a sleeving mode for locking, so that the connecting structure is further reinforced, and potential safety hazards caused by loose connection are effectively avoided.

A protector (1) according to the present disclosure comprises: one or more circular tube-shaped inner tubes (12) which accommodate cables (2); an outer tube (11) which accommodates the one or more inner tubes (12), and of which the curvature of the inner peripheral surface is smaller than the curvature of the outer peripheral surface of the one or more inner tubes (12); a plurality of protective members (13) which are disposed in gaps S between the one or more inner tubes (12) and the outer tube (11); and tubes (14) which are disposed in the gaps S and serve as elastic members for fixing each of the plurality of protective members (13) in a state in which the protective members (13) are biased toward the inside of the protective members (13) from both ends of the protective members (13).

The utility model relates to the technical field of wiring wells, in particular to a municipal road crossing wiring well structure which comprises an original soil base layer, a foundation pit is formed in the surface of the original soil base layer, and a wiring well body is arranged in the foundation pit. The wiring well body comprises a supporting cushion layer, a water collection pit, an inner side well body, an outer side well body, a water collection groove, an iron grate, a fixing clamping groove, a water drainage pipe, a threading protection pipe, a waterproof coiled material layer and a waterproof coating layer, the inner side well body, the outer side well body and the supporting cushion layer are integrally poured through concrete, and the fixing clamping groove is formed in the inner side edge of the upper end of the outer side well body; a well cover plate is clamped in the fixed clamping groove; the wiring well body is provided with the inner layer and the outer layer, the wiring part is arranged in the inner side well body, the outer side well body plays a role in protection and prevents underground water from permeating, meanwhile, rainwater permeating from the upper side can be collected into the water collecting groove, and when the amount of rainwater permeates into the inner side well body, the rainwater can also be collected into the water collecting pit, so that the water collecting effect is improved. And the safety of the pipeline is effectively improved.

To provide a new pipeline which is sufficiently smoothly inserted into a hole formed by excavation and extending in the longitudinal direction, and a pipeline component which constitutes a part of the pipeline.SOLUTION: A conduit constructing tool 2 is prepared in which a male screw thread 4 is formed at one axial end portion of an outer circumferential surface and a female screw thread 10 is formed at the other axial end portion of an inner circumferential surface, an axial length of the male screw thread 4 is equal to or less than an axial length of the female screw thread 10, and an outer diameter of a male screw thread non-forming region 6 where the male screw thread 4 is not formed is constant in the axial direction, and a conduit 100 is constructed by screwing the male screw thread 4 of one conduit constructing tool 2a with the female screw thread 10 of another conduit constructing tool 2b.SELECTED DRAWING: Figure 1

The application relates to the technical field of power engineering cable installation, and discloses an optical and electrical combined cable integrated laying and protection system for complex working conditions, which comprises: a rigid base configured to be anchored at a turning node; and a self-adaptive bearing assembly rotatably installed on the rigid base; the bearing assembly comprises elastic split units arranged in an axial direction; each unit is converted from an open state to a holding state of wrapping the side wall of the cable under radial pressure; and the inner surface of the unit is provided with a partitioned friction structure, which comprises a bottom high-friction rolling driving surface and two side wing low-friction sliding decoupling surfaces; through the cooperation of the tribological anisotropic structure and the self-adaptive geometric deformation, the tangential shear wear in the deep envelope state is eliminated, and the physical damage problem of the cable sheath and the optical unit in high-tension laying is solved.

The invention discloses a novel hydraulic intelligent trench cover plate which comprises an intelligent sensing assembly used for collecting environmental parameters in a trench. The control decision component is used for receiving the collected data of the intelligent sensing component, analyzing and processing the collected data and generating a control instruction; the execution response component is used for receiving the control instruction and executing a corresponding action; the intelligent sensing assembly and the execution response assembly are electrically connected with the control decision assembly, a combined structure of a direct-push motor and a telescopic mounting frame is adopted, and a novel environment-friendly composite material cover plate which is light in weight and high in pressure resistance is matched, so that remote or local one-key automatic opening and closing of a cover plate main body are achieved, and the automatic opening and closing of the cover plate main body are achieved. And traditional heavy-physical manual operation is completely replaced, and the operation and maintenance labor cost and the labor intensity are greatly reduced.

The utility model relates to the technical field of MPP electric power pipes, in particular to an impact-resistant three-layer composite structure pipe of an MPP electric power pipe. According to the technical scheme, the MPP electric power pipe comprises an MPP electric power outer pipe and an MPP electric power inner pipe, the MPP electric power inner pipe is arranged in the MPP electric power outer pipe, a containing cavity is formed between the MPP electric power inner pipe and the MPP electric power outer pipe, and three connecting plates are fixedly connected to the outer surface of the MPP electric power inner pipe in an annular array at equal intervals; the sides, away from the MPP electric power inner pipe, of the outer surfaces of the three connecting plates are fixedly connected with the inner wall of the MPP electric power outer pipe. According to the utility model, cables can pass through the interior of the MPP power tube in a classified manner and do not interfere with one another, so that the cables are prevented from being wound in the MPP power tube, subsequent maintenance and searching of the passing cables are facilitated, and the impact resistance of the MPP power tube is improved at the same time.

The utility model relates to electric power pipe technical field discloses a reinforced polypropylene electric power pipe, including the pipe body, the pipe body includes polypropylene inner layer, short glass fiber reinforced layer, polyester reinforcing layer and polypropylene outer layer from inside to outside in proper order, be equipped with the hydrophilic wet layer between polyester reinforcing layer and polypropylene outer layer, be equipped with a plurality of radial micro -holes in the polypropylene outer layer, the radial micro -hole is conical circular truncated cone hole shape, and the size is big outside small in; The radial micro -hole is uniformly distributed along the length extension direction of the pipe body, and is arranged in the 120 degree range of the top of the pipe body, the inner wall of radial micro -hole is equipped with hydrophobic coating. Solve the problem that the polyester reinforcing layer is prone to hydrolytic aging phenomenon when the electric power pipe is buried or exposed to humid environment in the prior art, leading to the problem of tensile strength decline, long-term reliability reduces.

The utility model relates to the technical field of pipeline connectors, and discloses a buried cable protection sleeve single-row pipe connector which comprises two beam pipes, one side of each beam pipe is fixedly connected with two clamping blocks, the other side of each beam pipe is provided with clamping grooves clamped with the clamping blocks, one side, far away from the clamping blocks, of each beam pipe is fixedly connected with two supporting blocks, and the other side of each beam pipe is provided with clamping grooves clamped with the clamping blocks. Sliding rods are fixedly connected to the inner walls of the two supporting blocks, two pull columns are slidably connected to the outer portions of the sliding rods, sliding plates are fixedly connected to the inner sides of the pull columns, baffles are fixedly connected to the inner sides of the sliding plates, springs are arranged on the outer portions of the sliding rods in a sleeving mode, and two sealing gaskets are fixedly connected to the inner wall of the beam tube. The sealing gasket is a rubber sealing gasket, and the two beam tubes are reversely clamped through the clamping blocks and the clamping grooves. Compared with the prior art that the clamping blocks need to be pressed respectively to unlock the clamping state, according to the design, the working procedure steps are reduced, and meanwhile the efficiency during disassembly is improved.

The utility model relates to the technical field of PVC (polyvinyl chloride) line pipes, in particular to a line pipe convenient to connect, which comprises at least two sequentially connected pipe fitting units and a plurality of locking pieces, each pipe fitting unit comprises a socket part and a spigot part connected with the socket part, the spigot parts of the adjacent pipe fitting units are inserted into the socket parts, and the locking pieces are connected with the socket parts. A guiding-in groove is formed in the position, located on the inner wall, of one end of the socket part, a protruding part is arranged on the outer wall of the spigot part, the protruding part is in sliding connection with the guiding-in groove of the adjacent pipe fitting unit, and a first inserting hole and a second inserting hole are formed in the socket part and the spigot part respectively. The first inserting hole is communicated with the second inserting hole of the adjacent pipe fitting unit, and the locking piece can be inserted into the first inserting hole and the second inserting hole which are in a communicated state. The first inserting hole and the second inserting hole can be quickly aligned through the effects of the guide-in groove and the protruding part, time for alignment is not needed during installation, glue does not need to be smeared for connection and fixation, and the construction efficiency is improved.

A height adjustable utility riser assembly slidable and expandable conduits move between a contracted or retracted position and an expanded position to allow varied lengths of the riser assembly for initial mechanical connection with an electrical or communication box. An elastomer seal between the riser assembly conduits provides a slidable seal therebetween. An engineered maximum expansion indicator marking, integral with the height adjustable utility riser assembly, indicates the maximum expansion of the riser assembly to maintain the structural integrity of the installed utility riser assembly and the slidable seal therein.A method for installing the height adjustable utility riser assembly rising from below ground or soil comprises the steps of aligning the height adjustable utility riser assembly below a box, and expanding the riser assembly slidable sleeve conduit from the contracted or retracted position to the expanded position for mechanical connection with a box while slidably sealing the riser assembly but not expanding the sleeve conduit beyond the maximum expansion indicator marking. Advantageously, after connecting the utility riser assembly between the box and another underground conduit, the slidable seal allows the riser assembly to retract and expand to accommodate movement after installation. The position of the maximum expansion indicator marking is engineered to anticipate expansion after installation to maintain the structural integrity of the installed riser assembly and the slidable seal therein.

A raceway includes a horizontal sleeve element carrying a metallic coil tube therethrough below a ground level associated with a structure such that the horizontal sleeve element is directly embedded in a base layer under the ground level and immediately below a first layer of the ground level, and a curved elbow element directly connected to the horizontal sleeve element at each of both ends of the horizontal sleeve element to transition the metallic coil tube across perpendicular directions. The raceway establishes a pathway for an electrical and / or a breathable air connection between components of a safety system implemented within the structure based on seamlessly and jointlessly drawing the metallic coil tube out of the curved elbow element on the each of both the ends of the horizontal sleeve element. Components of the raceway create a fire rated enclosure for the metallic coil tube.

The invention discloses an anti-seepage system and method for an electric power pipe jacking connector, and the system comprises a first channel which is formed in the end part of one end of a pipe jacking insertion opening in the radial direction of the pipe jacking insertion opening; the two channels are formed in the middle area of the jacking pipe inserting opening in the circumferential direction of the jacking pipe inserting opening, and screws are assembled in the two channels; the two groups of rubber rings are coaxially arranged on the outer side wall of the jacking pipe inserting opening in a sleeving manner and symmetrically arranged on the two sides of the two channels in the axial direction of the jacking pipe inserting opening; the three channels are formed in the other end of the pipe jacking insertion opening in the radial direction of the pipe jacking insertion opening. The sealing layers are arranged at the two ends of the pipe jacking insertion opening respectively; the humidity detection part is mounted on the pipe jacking bell mouth, can monitor the humidity change of a sealing area in real time and is in communication linkage with the control platform, and abnormal water seepage early warning and automatic response processing are achieved, so that the problem that a traditional pipe jacking connector cannot achieve full-life-cycle sealing state monitoring and active prevention and control is solved; the technical effect of changing from passive maintenance to active prevention and control is achieved.

The utility model relates to the technical field of communication pipelines, and discloses an assembly type pipeline for engineering construction, which comprises a pipeline body, the right side of the pipeline body is fixedly connected with a connecting cylinder, two first mounting sleeves are sleeved below the outer ring of the pipeline body, and the two ends of the two first mounting sleeves are fixedly connected with inserting plates. Inserting holes are formed in the two sides of the inserting plate correspondingly, the upper portion of the outer ring of the pipeline body is sleeved with two second mounting sleeves, inserting grooves are formed in the bottoms of the two ends of the two second mounting sleeves correspondingly, dismounting assemblies are arranged on the two sides of the two ends of the second mounting sleeves correspondingly, and a combined cylinder is fixedly connected to the right side of the connecting cylinder; and four fixed cylinders penetrate through and are fixedly connected with the outer side of the combined cylinder. According to the pipeline combination device, the pulling piece on the outer side of the combination cylinder is pulled, the pull rod and the second spring are matched to drive the limiting column to stretch into or stretch out of the telescopic groove, and therefore the limiting column can be conveniently inserted into or pulled out of the limiting hole, and pipeline bodies in the combination cylinder can be conveniently and rapidly combined.

The invention relates to the technical field of construction in a cable trench, in particular to a cable lifting device for construction in a cable trench, and the device comprises a lifting frame which is a supporting frame, is used for providing overall support and is fixed on the top surface of the cable trench; the driving telescopic assembly is installed and fixed to the middle of the lifting frame, the driven telescopic assemblies are installed and fixed to the two sides of the lifting frame correspondingly and used for adapting to different ditch widths, the driven telescopic assemblies stretch out and draw back synchronously along with the driving telescopic assembly, and the lifting frames are installed and fixed to the four corners of the lifting frame. The locking device is used for moving on a cable trench and locking the position; the lifting sliding plate is mounted in the middle of the lifting frame, the mounting block is mounted in the lifting sliding plate, the lifting rod is fixed in the mounting block, and the lifting rod is a lifting arm and is vertically mounted in the middle of the lifting sliding plate; the device has the advantages of being convenient to operate, safe and reliable, and greatly improving the mechanization level and the operation efficiency of construction in the cable trench.

The utility model relates to the technical field of cable fittings, and discloses an anti-winding cable protection tube, which comprises a tube body, one end of the tube body is fixedly connected with a threaded insertion tube, the outer surface of the other end of the tube body is provided with an annular groove, and a threaded sleeve is clamped in the annular groove. A plurality of partition blocks distributed circumferentially are fixedly connected into the pipe body, a plurality of cable connecting spaces are formed through the partition blocks, so that a plurality of strands of cables can be arranged in the connecting spaces in a penetrating mode, the diameters of the inserting shafts are adjusted, the inserting shafts are arranged in a penetrating mode, and the connecting blocks drive the clamping blocks to slide. The multi-strand cable fixing device is simple in structure and convenient to operate, the multi-strand cable fixing work is achieved, meanwhile, through the arrangement of a plurality of anti-seismic pads, on the premise that the multi-strand cable is prevented from winding, the anti-seismic effect of a plurality of cables in use is improved, through mutual threaded connection of a plurality of pipe bodies, connection protection of cables of different lengths is achieved, operation is convenient, and the service life of penetrating of the multi-strand cable is prolonged.

The utility model relates to the field of cable conduits, in particular to a cable conduit with a flame-retardant structure, which comprises a cable conduit main body. And the protection layer wraps the cable conduit main body and is used for protecting the cable conduit main body, and the protection layer comprises a heat-resistant layer. According to the cable conduit with the flame-retardant structure, through the arrangement of the cable conduit main body, the protection layer and the high-temperature-resistant layer, the flame retardance of the whole cable conduit is enhanced, the change of the outer side of a cable in a high-temperature environment is avoided, the heat-resistant layer on the outer layer of the cable conduit main body is glass fiber cloth, and glass fibers are used as raw materials, so that the cable conduit is environment-friendly. The cloth-shaped material manufactured through the textile technology has excellent mechanical property, heat resistance, corrosion resistance, insulativity and flame retardance, the outer flame-retardant layer of the heat-resistant layer is made of polyvinyl chloride and has a good flame-retardant effect, and the high-temperature-resistant layer in the inner pipe is matched with a polymer added with a flame retardant, so that the fireproof performance of the cable conduit is improved.