503results about "Shaping reinforcements" patented technology

The invention relates to the technical field of tunnel engineering prefabricated part production, in particular to a large-diameter duct piece independent kiln assembly line conveying prefabricating method and system. S2, a reinforcement cage and an embedded part are installed; s3, concrete is precisely poured and vibrated; s4, pre-curing and surface treatment; s5, carrying out roller way type flow conveying; s6, hydration heat-driven dynamic maintenance is carried out; and S7, demolding and finished product detection. And S8, mold circulation. According to the large-diameter duct piece prefabricating production line, through technical innovation in multiple aspects of mold, conveying, maintenance, control and the like, the core technical problem in existing large-diameter duct piece prefabricating production is solved, high-precision, high-efficiency, low-energy-consumption and green production of large-diameter duct pieces is achieved, and the large-diameter duct piece prefabricating production line has remarkable technical advantages and wide application prospects and is suitable for large-diameter duct piece prefabricating production. The method can be widely applied to infrastructure construction projects such as shield tunnels, open caisson projects and underground comprehensive pipe galleries.

The invention discloses novel cement pipe pouring forming equipment, and relates to the technical field of pouring equipment, the novel cement pipe pouring forming equipment comprises a supporting seat and a reinforcement cage body, a pouring inner mold and a pouring outer mold are arranged at the top of the supporting seat, the reinforcement cage body is placed between the pouring inner mold and the pouring outer mold, and a control assembly is arranged on the supporting seat. According to the novel pouring forming equipment for the cement pipe, periodic knocking treatment is conducted on the inner wall of the pouring inner mold through the knocking rods, high-frequency vibration is generated, the vibration effect in concrete is remarkably improved through the vibration, and therefore the concrete is fully compacted, bubbles in the concrete are effectively eliminated, and the concrete quality is improved. The reinforcement cage has important significance for improving the strength and durability of the cement pipe, the central position of the reinforcement cage body between the pouring inner mold and the pouring outer mold is ensured through an accurate adjusting and positioning mechanism, the reinforcement cage is prevented from moving in the pouring process, and the construction efficiency is improved. And the problem of non-uniform stress distribution caused by the fact that the position of the reinforcement cage deviates from the center is also avoided.

The invention discloses a connector of a wind power concrete tower drum, a tower drum section and a tower drum construction method, the connector comprises a tower drum inner bottom flange and a lower turnup pipe drum, the lower turnup pipe drum is coaxially welded and fixed on the inner wall of the tower drum inner bottom flange to obtain a ring groove, and the ring groove is filled with ultra-high performance concrete. According to the tower tube sections, the connectors are arranged at the upper end and the lower end of a common concrete pipe, and prestressed tendons penetrate through ultra-high performance concrete of the connectors and the common concrete pipe and are locked through prestressed anchorage devices. The construction method comprises the following steps: 1, prefabricating the inner bottom flange and the lower flanging pipe barrel of the tower barrel in a factory; 2, coaxially welding the inner bottom flange of the tower barrel and the lower flanging pipe barrel; 3, a connector is manufactured, and a common concrete pipe is manufactured; 4, hoisting in place in sequence on site; and 5, the prestressed steel bars penetrate through the tower drum sections and are locked through the prestressed anchorage devices. The method has the technical effects that the bearing capacity of concrete tower drum connection is enhanced, the anti-fatigue performance of the concrete tower drum joint and the overall stability of the tower drum are improved, and the construction cost is low.

The utility model belongs to the field of tensioning machine equipment, and particularly relates to prestressed concrete pole tensioning equipment, which solves the problems of no clamping protection and difficulty in cooling in the prior art, and comprises a support frame and a slide rail plate, and the bottom of the support frame is fixedly connected with a movable base through a screw. The movable base is installed at the top of the sliding rail plate, two symmetrically-arranged lifting screw rods are jointly and rotationally installed in the support frame and the movable base, sliding blocks are arranged on the peripheral faces of the two lifting screw rods in a threaded and sleeving mode, and through arrangement of structures such as a clamping plate and an adjusting screw rod, when a tensioning ejector head starts to work, the sliding blocks are arranged on the sliding blocks in a threaded and sleeving mode; after the servo motor is started, the servo motor drives the placing plate to ascend, meanwhile, the rack plate drives the adjusting screw rod to move towards the tensioning top head through the linkage gear, the ejector rod is driven to move towards the tensioning top head, the tensioning top head is clamped in the middle of the placing plate, and overturning caused by center-of-gravity shift is prevented.

The invention discloses a special-shaped concrete pipe pile adjustable forming die and a concrete pipe pile forming method, and relates to the technical field of concrete pipe piles. The special-shaped concrete pipe pile adjustable forming die comprises a base, symmetrically-distributed fixing bases are fixedly connected to the top of the base, and an adjusting structure is installed at the end, away from the fixing bases, of the top of the base; the adjusting structure comprises a sliding strip connected to the top of the base in a sliding mode. According to the adjustable forming die for the special-shaped concrete pipe pile and the concrete pipe pile forming method, a combined structure of the sliding grooves, the sliding strips and the lead screws is designed at the top of the base, so that the distance between the barrel-shaped dies can be flexibly adjusted, the lead screws are driven by the double-shaft motor to rotate, and the sliding strips are driven to stably slide in the linear direction; by means of the modular splicing design of the first mold and the second mold, additional mold assemblies can be additionally arranged according to actual needs, the length of the barrel-shaped mold is increased, and therefore the machining requirements of concrete pipe piles of different specifications are met.

The invention discloses concrete pipe pile manufacturing equipment and a manufacturing method, and relates to the technical field of concrete pipe piles, the concrete pipe pile manufacturing equipment comprises two lower templates, and the two lower templates are rotatably connected; the upper mold plate is detachably arranged at the tops of the two lower mold plates, so that the two lower mold plates and the upper mold plate are combined into a cylinder; the base is provided with a driving wheel, and the cylinder can be placed on the driving wheel; each fixing mechanism comprises two fixing assemblies, each fixing assembly comprises a clamping jaw and a push-pull rod, the clamping jaws are rotationally connected to the upper die plate, and one end of each push-pull rod is connected with the upper die plate. When the upper formwork is hoisted to the lower formwork through external hoisting equipment, the upper formwork and the lower formwork are automatically connected and fixed through the clamping jaws, when the formworks rotate, the clamping blocks are automatically locked, the clamping jaws are fixed, and when the upper formwork and the lower formwork rotate, the vibration head enters concrete for vibration through rotation of the rotating cylinder; and the compaction degree of the concrete is improved.

The invention belongs to the technical field of electric poles, and provides a preparation method of a corrosion-resistant thin-wall concrete-filled steel tube electric pole and the electric pole. Corrosion-resistant elements such as copper, phosphorus, chromium and nickel are stored in an outer steel tube, an inner steel tube, a flange plate and a flange plate cover plate which are made of weather-resistant steel; and meanwhile, after sand blasting, the surface energy of the steel is increased, then water mist spraying and drying circulation treatment are conducted, the steel is promoted to form a stable rust layer on the surface of a base body, corrosive media in air are prevented from permeating into the base body, and chemical process anti-corrosion modes such as hot-dip galvanizing or coating brushing are replaced. The process difficulty is simplified, the generation of a rust layer is stabilized, the problem that the electric pole needs to be coated with an anti-corrosion coating regularly for anti-corrosion maintenance in the later period is solved, and the process difficulty and the anti-corrosion cost are reduced; meanwhile, the flange plate cover plate is arranged at the position of the middle hole of the flange plate, sealing of the inner wall of the inner steel pipe is achieved, and the anti-corrosion treatment and maintenance procedures of the inner wall of the inner steel pipe are avoided in the mode that air isolation is conducted on the inner wall of the inner steel pipe.

According to the hollow concrete pile core mold tensioning structure, a pouring core mold is supported by a tensioning framework, the outer side of the tensioning framework is wrapped with an elastic skin, the elastic skin forms a hollow structure during concrete pouring through circumferential stretching or stretching of the tensioning framework, and the hollow structure is pulled out of a center hole after forming; and pouring forming of the hollow concrete pile is completed, the tensioning framework supports the elastic skin in an attached mode through the multiple inner supporting plates, the inner supporting plates are supported in the radial direction through the jacking structure, and in the process, expansionary force and supporting force of the elastic skin are provided. The pouring core mold is in tensioning fit with the tensioning plate set through the tensioning rod, the tensioning rod is connected with the tensioning adjusting device, the tensioning adjusting device can tighten or loosen the jacking structure, the inner supporting plate is supported or recycled by the jacking structure, and forming of the hollow structure of the hollow concrete pile through the elastic skin is completed. The invention further provides a hollow concrete pile tensioning die.

The utility model relates to the technical field of mold closing devices, and provides a mold closing device for prestressed concrete pipe pile production, which comprises a moving component and a supporting structure, the supporting structure is fixed at the top end of the moving component, a mold closing component is fixed at the top end of the supporting structure, and a central component is arranged in the mold closing component. Through the arrangement of the sliding mechanism, after the concrete pipe pile is formed, the fixing blocks are loosened, the mold bodies on the two sides are separated, then the mold bodies are pulled outwards, the friction force between the first sliding block and the base and between the second sliding block and the base can be reduced through balls at the bottom ends of the first sliding block and the second sliding block, and therefore the concrete pipe pile is formed. According to the mold closing device for prestressed concrete pipe pile production, the mold body is better moved, more labor is saved during movement, the function that the mold closing device has the function of facilitating movement and separation of the mold body is achieved, and the use convenience of the mold closing device for prestressed concrete pipe pile production is improved.

The invention relates to the technical field of pipe pieces, and discloses an anti-cracking reinforced concrete pipe piece component which comprises a base body layer, a functional layer and a waterproof layer. Wherein the functional layer is composed of composite fiber reinforced resin mortar, the anti-cracking performance of the duct piece can be effectively improved, and generation and expansion of cracks are reduced; anti-skid textures are arranged between the matrix layer and the functional layer, so that the interlayer binding force is enhanced, the interface adhesiveness is improved, and the problems of interlayer stripping and layering caused by factors such as long-term load and temperature and humidity change are prevented; and the waterproof layer adopts a nano waterproof coating, so that the water penetration resistance of the duct piece is enhanced, the duct piece has good aging resistance, and cracking and failure of a traditional waterproof layer caused by environmental factors are avoided. By optimizing the materials and the structure, the overall performance of the duct piece is improved, the duct piece has remarkable advantages in the aspects of crack resistance, interlayer binding force and waterproof durability, the duct piece can adapt to the complex underground engineering environment, and the service life of the duct piece is effectively prolonged.

The invention discloses a horizontal two-dimensional orientation steel fiber UHPC wind power tower drum ring piece preparation device and method, and relates to the technical field of wind power tower drum engineering. The device is mainly composed of an annular mold, an annular sliding rail, an electric sliding block, coils and a direct-current power source, the direct-current power source supplies power to the coils on the inner side and the outer side to generate a uniform and controllable magnetic field, the coils are driven by the electric sliding block to achieve synchronous annular rotation, the magnetic field intensity and the action time are adjusted according to different flowing degrees of UHPC mixtures, and therefore the UHPC mixtures can be manufactured. And under the action of a rotating magnetic field, the steel fibers form two-dimensional distribution in a horizontal plane. Compared with a traditional UHPC wind power tower drum, the horizontal two-dimensional directional steel fiber reinforced UHPC wind power tower drum produced by the device has the advantages that the compression bearing capacity is improved by 15%-20%, and the compression fatigue resistance is improved by 40%-50%. According to the tower drum structure, the thickness of the tower drum ring section can be reduced by 10%-20%, the dead weight of the tower drum and the consumption of raw materials are reduced, and the transportation and construction cost is reduced. The device is simple in design and convenient to disassemble and assemble, has efficient and reliable industrial production potential, and can be widely applied to manufacturing and optimization of wind power towers.

The utility model discloses a tensioning device for applying prestress to a concrete pole, and belongs to the field of concrete pole production. The tensioning device comprises a bottom plate, a lower die is fixed to the upper end of the bottom plate, a steel bar frame is arranged on the lower die, pier heads are arranged at the two ends of steel bars of the steel bar frame, and the diameter of the pier heads is larger than that of the steel bars. A fixing mechanism and a traction mechanism are respectively arranged at two ends of the steel bar frame; the fixing mechanism comprises a mounting plate capable of sliding and adjusting in the axial direction of the reinforcing steel bar, and chuck assemblies corresponding to the pier heads one to one are arranged on the mounting plate; the traction mechanism comprises a supporting plate capable of sliding and adjusting in the axial direction of the reinforcing steel bar, an oil cylinder is arranged on the supporting plate, a connecting plate is fixed to a driving shaft of the oil cylinder, and chuck assemblies corresponding to the pier heads one to one are arranged on the connecting plate; the clamping head assembly comprises a clamping head, a positioning hole matched with the pier head is formed in the clamping head, the two sides of the clamping head are each provided with a clamping unit, and clamping blocks capable of sliding are arranged in the clamping units and can clamp the steel bars.

The invention provides a preparation method of a glass reinforced concrete pipe and the glass reinforced concrete pipe, and relates to the technical field of water pipe structures.The method comprises the steps that a concrete material and composite reinforcing ribs are prepared; binding the composite reinforcing ribs to obtain a reinforced framework; placing the reinforced framework in a specified mold, and then pouring a concrete material to obtain a glass reinforced concrete pipe; wherein the concrete material comprises shale ceramisite, and the mass ratio of the shale ceramisite is 27.4%-30.3%; the composite reinforcing ribs comprise alkali-free untwisted glass fiber continuous roving and unsaturated polyester resin. According to the invention, the shale ceramsite is used for replacing stone aggregate in the prior art, and the framework is prepared from the composite reinforcing ribs prepared from the alkali-free untwisted glass fiber continuous roving and the unsaturated polyester resin to replace a steel bar framework in the prior art, so that the compressive strength and the impermeability are improved, and meanwhile, the self weight is reduced; and the technical problem that the framework is easy to rust is solved, and long-term safety and reliability of actual engineering are guaranteed.

The present invention proposes a centrifugal material distribution device for a cement pole production line, which belongs to the technical field of cement pole processing. The centrifugal material distribution device for a cement pole production line includes: a base plate; a rotatably mounted on the base plate; a placement wheel, which is horizontally displaceably mounted on the rifle pole, and is used to support and drive the steel mold of the cement pole to rotate; a drive motor, which is mounted on the base plate; a transmission wheel, which is mounted on the rotating shaft of the drive motor; and a follower, one end of which is rotatably mounted on the surface of the transmission wheel that deviates from the axis of the transmission wheel, and the other end of which is mounted on the placement wheel. The present invention has a centrifugal material distribution device for a cement pole production line, which is achieved by displaceably mounting the placement wheel on the rifle pole in the axial direction, and combining the drive motor, the transmission wheel and the follower to drive the placement wheel to move back and forth along the rifle pole, thereby promoting the concrete poured in the steel mold to be evenly distributed in the steel mold, and reducing the formation of bubbles and voids in the cement pole.

The utility model discloses a pouring device for energy-saving and environment-friendly cement telegraph pole production, which comprises a base, two groups of half-barrel molds are arranged above the base, a sealing side cover is arranged on one side of each half-barrel mold, a closed side cover is arranged on the other side of each half-barrel mold, and a control connecting valve matched with a material conveying pipe is fixedly connected to the surface of each sealing side cover. Belt half wheels are fixedly connected to the surfaces of the half barrel molds, two sets of sealing cover side covers and sealing side covers are assembled to form a sealed cavity, a conveying pipe injects concrete materials into the formed cavity through a control connecting valve, the conveying pipe is pulled out, a motor fixedly connected to the top of a supporting seat is started, and the conveying pipe is driven to rotate; the motor drives the belt wheel fixedly connected with the output end, the linkage belt connected with the surface of the belt wheel in a sleeving mode drives the belt half wheel and the half-barrel mold to rotate at the same time, a cavity is fully filled with concrete and compacted through centrifugal force, the inner wall of the half-barrel mold is sprayed with the abrasion-resistant layer, and the abrasion and maintenance cost of the half-barrel mold is reduced.

The invention discloses a high-strength concrete pole production process, and relates to the technical field of concrete pole production, and the high-strength concrete pole production process comprises the following steps: S1, uniformly mixing prepared cement, aggregate and a mixed material according to a certain proportion; s2, steel bars are cut, bent and bound according to a design drawing, and a steel reinforcement cage meeting the requirements is manufactured and placed in a mold; according to the high-strength concrete pole production process, the power piece drives the movable rod arranged at the output end of the power piece to move, the adjusting rod is rotationally installed on the outer surface of the movable rod, and the end of the adjusting rod is rotationally connected with the lining of the arc-shaped plate, so that when the movable rod moves, the arc-shaped plate can be adjusted; and the arc-shaped plates can be pushed to expand outwards or contract inwards in cooperation with the adjusting rods. And after the inner wall of the reinforcement cage is attached to the arc-shaped plates, the movable rods are matched with the adjusting rods to drive the arc-shaped plates to move outwards, and then the reinforcement cage is pushed to be attached to the inner wall of the lantern ring, so that fixation of the reinforcement cage is further enhanced.

The invention discloses a light-weight corrosion-resistant prestressed concrete cylinder pipe which comprises a steel cylinder, a UHPC pipe core, a BFRP prestressed tendon layer and a mortar protection layer. The two layers of UHPC pipe cores are respectively positioned on the two sides of the steel cylinder; the BFRP prestressed tendon layer is fixed through a split type basalt anchoring device, and the anchoring device comprises an inner layer BFRP-RPM embedded part and an outer layer epoxy resin grouting layer. Variable cross-section thickness distribution is designed in the axial direction of the UHPC pipe core, the end thickness # imgabs0 # of a bell and spigot is 60-80 mm, and the middle thickness # imgabs1 # of the bell and spigot is 40-50 mm; bFRP prestressed tendons are adopted to replace traditional high-strength prestressed steel wires. The BFRP material has excellent corrosion resistance and can keep stable performance in a chloride ion corrosion environment, so that the problem of wire breakage caused by corrosion is avoided, the corrosion resistance of the pipeline is remarkably improved, and the service life of the pipeline is prolonged.

The utility model belongs to the field of concrete pole production equipment, and discloses a concrete pole centrifugal forming device which comprises a base and a reinforcement cage. A lower mold and an upper mold which are symmetrically arranged up and down are arranged above the base, a connecting assembly used for being detachably connected with the upper mold is arranged on the lower mold, and when the upper mold and the lower mold are attached, a horizontally-arranged hollow sealed cylindrical shell can be formed; first telescopic air cylinders coaxially arranged with the lower mold are fixed to the inner walls of the two ends of the lower mold, discs are fixed to the output ends of the first telescopic air cylinders, the discs and the cylindrical shell are coaxially arranged and are in sliding connection with the cylindrical shell, and a plurality of blind holes annularly and evenly distributed around the central axes of the discs are formed in the side faces, close to each other, of the two discs. The two disc blind holes are in one-to-one correspondence and are coaxially arranged; the problem that the reinforcement cage shakes in the upper mold and the lower mold during centrifugation in the prior art is solved, and the production quality of concrete poles is improved.

The utility model discloses an automatic pipe pile prestress traction device which is arranged on a supporting plate frame and comprises a tensioning oil cylinder, a traction lead screw and the tensioning oil cylinder are concentrically arranged, the traction lead screw penetrates through the tensioning oil cylinder, and the traction lead screw can rotate around the central axis of the traction lead screw through a moving mechanism and move in the direction of the axis of the traction lead screw. The traction lead screw is detachably connected with a pipe pile mold through axial movement and a traction chuck arranged at the front end of the traction lead screw, a piston rod in the tensioning oil cylinder exerts axial thrust on the traction lead screw and acts on the pipe pile mold to achieve tensioning of prestress, and a plurality of supporting ejector rods are arranged on the front side of the supporting plate frame. An auxiliary adjusting device is arranged on the supporting ejector rod, the auxiliary adjusting device adjusts the central axis of the pipe pile mold to be concentric with the axis position of the traction lead screw, a buffering device for reducing the impulsive force of the pipe pile mold is arranged on the auxiliary adjusting device, and locking connection and traction force application on the pipe pile mold can be automatically achieved. And the safety and the efficiency are further improved.

The invention relates to the technical field of concrete electric pole manufacturing, and discloses an optimized steel fiber anti-crack ultra-high performance concrete centrifugal electric pole manufacturing method and system. The method comprises the following steps: dividing an electric pole manufacturing process into a plurality of manufacturing units according to production batches, and collecting material component data, process setting data and online detection data in each manufacturing unit to form a multi-source production data set; calculating an anti-cracking performance index and a strength performance index based on a multi-source production data set, and dynamically outputting an initial process correction value through a dual-threshold monitoring mechanism and a performance adjustment model; performing adaptive adjustment on the initial process correction value of each manufacturing unit according to the production correlation between the adjacent manufacturing units to generate an adjusted process correction value; and carrying out serialization processing on the adjusted process correction value, and outputting a production optimization instruction which is applied to a manufacturing execution process. According to the method, electric pole manufacturing whole-process data integration and dynamic process optimization are achieved, and the production efficiency and the product quality stability can be improved.

The invention relates to a centrifugal forming device of a directional steel fiber concrete hollow pipe pile and a using method, the centrifugal forming device comprises a bottom plate and fixed supports, and a stainless steel threaded rod is rotatably mounted between the two fixed supports; a driven wheel is mounted at one end of the stainless steel threaded rod and connected with an output shaft of a rotary variable-speed motor through a synchronous belt and a driving wheel, and the rotary variable-speed motor is electrically connected with a frequency converter; the middle of the stainless steel threaded rod is sleeved with a PVC hollow pipe die, and the two ends of the PVC hollow pipe die are each sleeved with a ball bearing. A PVC hollow cylinder is fixedly connected between the two ball bearings; a copper coil is wound on the outer surface of the PVC hollow cylinder, and the two ends of the copper coil are electrically connected with a direct-current power supply; and fixing nuts are arranged on the stainless steel threaded rods on the outer sides of the PVC pipe caps to limit the mounting positions of the PVC hollow pipe molds on the stainless steel threaded rods. The problem that fiber orientation and distribution cannot be controlled in the centrifugal process of the steel fiber concrete pile in the prior art is solved.

The invention provides a polyurea sandwich concrete composite pipeline and a preparation method thereof. The polyurea sandwich concrete composite pipeline sequentially comprises a polyurea lining layer, a concrete pipe core, a carbon fiber restraint layer and a polyurea protective layer from inside to outside. The preparation method comprises the following steps that a formwork is erected, concrete pouring is conducted, and the concrete pipe core is obtained after curing; winding a carbon fiber rope on the outer surface of the concrete pipe core to form a carbon fiber restraint layer; constructing a polyurea lining layer on the inner surface of the concrete pipe core; and constructing a polyurea protective layer on the outer surfaces of the concrete pipe core and the carbon fiber restraint layer, and curing to obtain the polyurea sandwich concrete composite pipeline. The polyurea sandwich concrete composite pipeline provided by the invention is light in weight, high in strength and excellent in impermeability and corrosion resistance, the construction difficulty in the pipeline transportation and laying process can be reduced, the service life of the pipeline is prolonged, the safety of the pipeline is improved, and the construction and maintenance cost of a municipal drainage pipe network is reduced; and the preparation method is simple.

The application discloses a pipe pile tensioning assembly with a plug positioning block, relates to the technical field of pipe piles, and is applied to pencil head concrete pile pouring operation, and is based on a cylinder, a concrete pile tip and a steel reinforcement cage. An external end of the cylinder corresponding to the concrete pile tip is sequentially provided with a pull tail plate and a positioning cover plate. The pull tail plate is provided with a gin hole matched with the steel reinforcement. The positioning cover plate is provided with a plug wedge column matched with the gin hole. The pull tail plate is provided with a positioning block on the inner side. The plug wedge column is provided with a wedge-shaped spring block with a clamping structure. The tensioning assembly is accurately coaxially positioned by replacing the traditional end plate internal thread bearing mode. The pipe pile production operation efficiency and forming quality are greatly improved. The service life of the assembly is prolonged. The production cost and operation labor intensity are reduced. The safety of the tensioning operation is improved. The problems of low end plate reuse rate, easy tooth failure, no positioning of the tensioning assembly, easy deviation, low installation operation efficiency, high labor intensity and the like in the production of the pencil head concrete pile are solved.

The invention relates to the technical field of pile foundation construction, and particularly discloses a prefabricated pile body with a built-in core cage and a construction method of the prefabricated pile body. The prefabricated pile body comprises a pipe pile body and a first reinforcement cage. A concrete cavity and a hollow cavity are formed in the pipe pile body, and the hollow cavity is located in the concrete cavity. The first reinforcement cage is located in the hollow cavity, a second reinforcement cage is arranged in the concrete cavity, and when the reinforcement cages are prepared, the first reinforcement cage is connected with the second reinforcement cage; the first reinforcement cage is provided with a stress piece, the stress piece extends in the hollow cavity in the radial direction, the two ends of the stress piece extend into the concrete cavity, and the stress piece is arranged in the hollow cavity in a bent mode. By the adoption of the prefabricated pile body, three reinforced anti-pulling stress mechanisms can be formed in the prefabricated pile body, the problem of connection failure between the core filling concrete and the tubular pile body is effectively reduced or avoided, and it is guaranteed that the prefabricated pile body meets the engineering safety requirement under the complex geological condition.

The invention discloses a common production line for concrete electric poles and tubular piles. The common production line comprises a material distribution room, a production room, a mold removal room, a universal mold treatment room, an independent mold treatment room, a universal material preparation room, an independent material preparation room and a mold closing room. The production room is located on the side face of the material distribution room, and the universal mold processing room and the universal material preparation room are sequentially arranged on the side face of the material distribution room and used for cleaning and assembling electric pole molds or pipe pile molds. The universal mold processing room and the universal material preparation room are adjacent to the production room in the longitudinal direction; the independent mold treatment room and the independent material preparation room are sequentially arranged in the transverse direction and are adjacent to the universal mold treatment room; the mold removal room is located in the universal mold treatment room and extends into the production room and between the independent mold treatment room and the independent material preparation room in the longitudinal direction; the mold closing room is located on the side face, close to the material distribution room, of the universal mold processing room and extends into the production room; and a plurality of hoisting devices for hoisting the molds are also arranged above the production line.

System for conveying at least one transport capsule comprising: - a pipe (2) comprising first and second trunk (21, 22) that are reciprocally assembled; - a coating (3) whose function is structural and of at least partially waterproofing the pipe (2) and comprising tensioned ribbon-shaped means (31) that wraps and compresses at least one portion of the pipe (2). The ribbon-shaped means (31 ) is made of fibre-resin composite material and comprises said fibres impregnated in said resin.

The invention discloses a high-performance cement pole with the bottom end subjected to salt-alkali resistance treatment and a production process thereof, and relates to the technical field of cement poles. The high-performance cement pole with the bottom end subjected to salt-alkali resistance treatment comprises a cement pole body, a rectangular block is fixedly installed at the bottom of the cement pole body, and an annular limiting groove is formed in the side portion of the cement pole body; a rotating sleeve is rotationally installed in the annular limiting groove, and four fixing mechanisms are installed on the rotating sleeve. During mounting, the mounting column is mounted firstly, after a cement pole is mounted and put in, the moving mechanism can move, so that the four supporting mechanisms rotate to correspond to the four fixing mechanisms in position, the four supporting mechanisms can be fixed through the four fixing mechanisms correspondingly, and therefore the cement pole is supported; the positions of the four supporting mechanisms are low, the concrete pole can be placed in conveniently, meanwhile, the moving mechanism can trigger the limiting mechanism, and therefore the bottom end of the concrete pole is limited.

The utility model relates to the technical field of tubular pile production, and discloses a centrifugal device for a tubular pile mold, which comprises a support, a plurality of rotating shafts, a first driving device, a friction wheel, a movable seat, a pressing wheel, a second driving device, a third driving device and a locking component, and the rotating shafts are provided with a plurality of rollers which are used for supporting the tubular pile mold. The centrifugal machine has the advantages that after centrifugal operation is finished, the third driving device drives the movable seat to move so that the pressing wheel can be tightly pressed on the friction wheel, the second driving device drives the pressing wheel to rotate, and the friction wheel, the rotating shaft, the rolling wheel and the mold are driven to rotate; when the mold rotates until the screw of the mold closing bolt is vertically downward and the upper mold is just above the lower mold, the third driving device drives the movable seat to move so as to enable the pressing wheel to leave the friction wheel, and the friction plate in the locking assembly abuts against the end face of the friction wheel to lock the positions of the friction wheel, the rotating shaft, the rolling wheel and the mold; the effect that the position of the mold can be rotationally adjusted after centrifugal operation is finished is achieved.

The utility model relates to the technical field of concrete pipe pile production, in particular to a prestressed concrete pipe pile production auxiliary device which comprises a supporting mechanism, a driving mechanism arranged below the supporting mechanism and used for moving, and a material distributing mechanism used for evenly filling concrete. The material distributing mechanism comprises a discharging hopper, an opening allowing concrete to pass through is formed in the lower end of the discharging hopper, four fixing columns are welded to the upper portions of the two sides of the discharging hopper and symmetrically distributed, the lower portions of the two sides of the discharging hopper are each fixedly connected with two supporting rods, and the lower sides of the supporting rods are rotationally connected with rolling wheels. The lower side of the discharging hopper is of an arc-shaped structure attached to the mold, concrete enters the framework from the two sides of the discharging hopper, the situation that the framework is bent due to falling of large stones is prevented, and the roundness of the framework and the effect after centrifugation of the concrete pipe pile are guaranteed.

The invention discloses a prestressed hollow combined structure tower drum based on steel pipe tenon-and-mortise joint connection and a construction method. The prestressed hollow combined structure tower drum comprises a drum body, the drum body is formed by assembling a plurality of drum sections in a segmented mode in the height direction, the adjacent drum sections are connected through steel pipe tenon-and-mortise joints, and the drum body is formed by connecting a plurality of hollow combined duct pieces through prestressed bent bolts in the annular direction. The hollow combined pipe piece comprises a hollow steel pipe, prestressed steel bars and a concrete shell. The steel pipe mortise and tenon joint comprises a concave tenon steel pipe, a convex tenon steel pipe, grouting materials and a PBL connecting piece welded to the outer wall of the convex tenon steel pipe. The advantages of a combined structure and a prestressed structure are exerted, the hollow steel pipes and the concrete are cooperatively stressed, the bearing capacity and rigidity of the tower drum are improved, the self weight is reduced, the anti-cracking performance of the tower drum is improved, and the service life of the tower drum is prolonged. The steel pipe tenon-and-mortise joint is high in strength, the reliability of the connecting structure is improved, and the bonding effect of the steel pipe and the grouting material is improved through the PBL connecting piece. According to the method, the field splicing efficiency of the assembly type tower drum is improved, and the method has wide application prospects.