259results about "Ceramic shaping cores" patented technology

The invention relates to a top-cover-free rectangular concrete body inner mold demolding device and demolding method.According to the top-cover-free rectangular concrete body inner mold demolding device, through innovative structural design, a rectangular inner mold is divided into two angle molds and two L-shaped molds, and a track extending by a specific angle (45 degrees in the horizontal direction) and an intermittent driving device are matched. During demolding, the intermittent driving device can accurately drive the two angle molds to synchronously slide inwards firstly, the contact area and friction force between the inner mold and a concrete body are effectively reduced, then the two L-shaped molds are driven to synchronously slide inwards, and the whole demolding process is completed. Compared with a traditional demolding mode, the demolding efficiency is greatly improved, and the demolding time is shortened; by the adoption of the gradual demolding mode, direct beating and violent disassembly of the mold and the concrete body are avoided, the risk that the inner mold and the concrete body are damaged is effectively reduced, the surface integrity and the internal structural strength of the concrete body are guaranteed, the service life of the inner mold is prolonged, and the production cost is reduced.

The invention discloses a UHPC sheath pouring mold for a pile foundation and a pouring method of the UHPC sheath pouring mold, and relates to the technical field of building construction equipment. A protection assembly for improving the structural strength of the pile foundation is arranged on the outer side of the pile foundation; the outer side of the protection assembly is wrapped with a pouring mechanism for conducting pouring preparation on the protection assembly, the pouring mechanism comprises an inner mold, and two outer molds are symmetrically installed on the outer side of the inner mold; the protection assembly comprises a supporting framework placed between an interlayer of the outer mold and an interlayer of the inner mold, and the outer side of the supporting framework is wrapped with an inner steel mesh and an outer steel mesh. The pouring mechanism is matched with pouring of concrete grout to prepare the protection assembly, then the protection assembly is carried and installed on the outer side of the pile foundation, and the structural strength of the pile foundation is improved. The UHPC sheath pouring mold for the pile foundation and the pouring method of the UHPC sheath pouring mold have the effects of high performance, high structural strength and high protection capacity.

The utility model relates to the technical field of tubular molds, in particular to an assembly type tubular mold device which comprises a base, an inner mold plate is arranged on the base, outer mold plates are arranged on the base and located on the outer side of the inner mold plate, the number of the outer mold plates is multiple sets, the outer mold plates are sequentially arranged in the circumferential direction, rib plates are fixedly arranged on the two sides of the outer mold plates, and multiple sets of locking grooves are formed in the rib plates at intervals. A pouring cavity is defined by the inner formwork and the outer formwork, a bottom ring is arranged at the bottom of the pouring cavity of the base, multiple sets of fixing rods are fixedly arranged on the outer side of the outer formwork at intervals in the circumferential direction, pulleys are arranged at the bottoms of the fixing rods, guide rails are arranged on the periphery of the base, and sliding grooves matched with the pulleys are formed in the side faces of the guide rails. According to the device, the pulleys are arranged at the bottom of the outer formwork, so that the outer formwork can horizontally slide along the guide rails on the periphery of the base, the outer formwork can be conveniently separated and combined, and the splicing speed is increased.

The invention discloses an anti-deformation high-strength inspection well prefabricating mold which comprises a base, an outer mold assembly is slidably mounted on a top plate of the base, an inner mold assembly is mounted at the position, in the center of the outer mold assembly, of the base, a demolding assembly is mounted in the inner mold assembly, sliding assemblies are mounted on the two sides of the bottom of the outer mold assembly, and sliding ways are mounted at the positions, corresponding to the sliding assemblies, of the base. The sliding assembly is slidably arranged on the slide way. Through the longitudinal reinforcing ribs and the transverse reinforcing ribs, a stable net-shaped reinforcing structure is formed, side pressure generated on the arc-shaped outer formwork in the concrete pouring process can be effectively dispersed, damage such as bending, deformation and cracking caused by uneven stress of the arc-shaped outer formwork is avoided, the structural stability and deformation resistance of the mold are remarkably improved, and the service life of the mold is prolonged. The reinforcing rib forming grooves which are perpendicularly crossed are formed in the inner side wall of the arc-shaped outer formwork, corresponding outer wall reinforcing ribs can be formed on the outer wall of the inspection well during concrete pouring, and the structural strength of the formed inspection well is effectively enhanced.

The batch box culvert pouring mold comprises an outer mold unit and an inner mold unit, the outer mold unit comprises a base, a bottom plate, two sets of side plates, a top plate and a rear plate, the rear plate and the bottom plate are integrally formed, the side plates are connected with the top plate and the bottom plate through telescopic rods, and the surfaces of the side plates are provided with third protrusions and U-shaped plates with fourth protrusions; the inner mold unit comprises an inner forming mold, a moving rod and a linkage plate, the linkage plate is provided with a first protrusion and a second protrusion, and a sleeving frame with a convex attaching strip is detachably fixed in an annular groove of the inner forming mold through a screw. After concrete is poured and solidified through the top plate injection groove, the moving rod drives the internal forming mold to drive the linkage plate to act, approaching positioning and separation of the side plates are achieved through linkage of the protrusions, the box culvert is moved out along with the inner mold by means of friction force of the attaching strips, and the box culvert and the inner mold can be separated by disassembling the screw. The demolding process is simplified, automatic operation is achieved, the labor intensity is reduced, the continuity, stability and forming quality of batch production are guaranteed, and the mold is suitable for a box culvert batch production scene.

The utility model is applicable to the technical field of dies, and provides a grinding pipe forming die, which comprises a die main body, a fixing device and a hole shaping block, and an outer die sleeve and an inner die sleeve are respectively and fixedly connected above a base; the lower part of the upper cover body is fixedly connected with a compaction pipe matched with the forming cavity; a first supporting block is in sliding connection with the interior of the first through hole in a matched manner; the inner side face of the first supporting block is a curved face matched with the inner side face of the outer die sleeve. The fixing frame is fixedly connected with the outer die sleeve; the fixing frame is fixedly connected with an adjusting nut; the adjusting bolt is rotationally connected with the first supporting block; the adjusting bolt is matched with the adjusting nut; a first supporting hole is formed in the outer side of the hole shaping block; and the first supporting hole is matched with the first supporting block, so that the grinding pipe with two discharging structures can be produced, and a specified discharging hole diameter can be formed in a blank forming stage of the grinding pipe by replacing the hole shaping block.

The application provides a core mold and a prefabricated room integrated pouring mold, and relates to the prefabricated room forming technical field.The core mold comprises a core mold body and a linkage unit.The core mold body comprises an inner bottom mold.The edge of the inner bottom mold comprises a corner part and a side edge part.The corner part is detachably connected with a corner mold, and the side edge part is detachably connected with an inner side mold.The linkage unit is connected with the corner mold and the inner side mold, and is configured to drive multiple corner molds to gather or disperse, and drive multiple inner side molds to gather or disperse.The core mold can improve the processing efficiency of the pouring mold.

The utility model discloses a prefabricating device of a pi-shaped beam plate, which comprises an outer side mold and an inner tube mold, a concrete pouring cavity is arranged between the inner tube mold and the outer side mold, and the inner tube mold is connected with the outer side mold through a support. The inner tube mold is provided with a bottom mold and at least two box-type bodies, each box-type body is composed of a top inner mold and four side inner molds, corner molds are arranged between the adjacent side inner molds and between the side inner molds and the top inner mold, the side inner molds are hinged to the bottom mold, the bottom mold is firmly fixed to the ground through foundation bolts, and the adjacent top inner molds are connected through connecting plates. The top inner mold, the side inner mold and the box-type body are arranged to form a closed box-type structure, the vertical linkage rod and the horizontal linkage rod are arranged to be matched with the hydraulic jack to form a hydraulic connecting rod type detachable split inner mold, and the situation that a mold plate is deformed due to high temperature and demolding adsorption force is generated is avoided.

The invention relates to the technical field of flue forming machines, and particularly discloses an automatic composite lining laying and positioning device for a flue forming machine. Comprising a fixed side plate, a hydraulic push rod is fixedly connected to one side of the fixed side plate, a driving shaft of the hydraulic push rod penetrates through the fixed side plate and is fixedly connected with a built-in connecting plate, a frame-shaped sliding plate is fixedly connected to the outer side of the built-in connecting plate, a side opening frame groove is formed in one side of the frame-shaped sliding plate, and a bottom supporting long plate penetrates through and is slidably connected to one side of the frame-shaped sliding plate; according to the automatic laying and positioning device for the composite lining for the flue forming machine, when the built-in composite lining moves in place, the frame-shaped sliding plate is driven by the hydraulic push rod to move back till the built-in composite lining is about to be separated from the side-opening frame groove, and the built-in composite lining is placed in the frame-shaped sliding plate. The bottom die sliding plate is driven by the transverse electric sliding rail to drive the built-in composite lining to move to a certain position, and then the positioning effect can be achieved.

The utility model provides a pile foundation sounding pipe protection sleeve manufacturing die which comprises a die core and an outer die which is arranged at the lower end of the die core in a sleeved mode to define a cavity for forming a pile foundation sounding pipe protection sleeve, and the pile foundation sounding pipe protection sleeve comprises a sleeve and a rigid holding ring connected to the opening end of the sleeve. A plurality of swing rods which are distributed in the circumferential direction of a pipe body and extend in the axial direction are arranged in the pipe wall of the sleeve, one end of each swing rod can be rotationally arranged on the rigid ring in a sleeving mode, and a hanging step is formed between the rigid holding ring and the pipe body. The outer mold is provided with an outer mold part hanging block used for being supported on the hanging step, and the core mold is provided with a core mold part hanging block used for being hung at the end, away from the pipe body, of the rigid holding ring. The utility model aims to provide the manufacturing mold for the protective sleeve of the pile foundation acoustic side pipe, which can be used for reliably protecting the pile foundation acoustic side pipe, and also solves the problem that the pile foundation acoustic side pipe is not provided with a special protective device for protection.

The utility model provides a core mould and prefabricated part mould, including shell, flexible layer and gasbag, flexible layer is provided between shell and gasbag, gasbag inflates and expands to press the flexible layer, gasbag deflates and separates from flexible layer. The inner mold is driven by power to expand outwards to extrude a preformed pile body and / or contract inwards to be separated from a positioning connecting piece, after preforming is completed through filling, the inner mold is driven by power to expand outwards to extrude the preformed pile body, the pile body is extruded more compactly, the strength of the formed pile body is further improved, and when the inner mold needs to be demolded after extrusion, the inner mold is separated from the positioning connecting piece. And the inner mold can contract inwards and can be separated from a formed product in the contraction process, so that the core mold is convenient to demold.

The application relates to a forming method of a mold and a tower drum segment, which comprises the following steps: a segment mold unit is provided with a pouring cavity and an opening communicating with the pouring cavity, the pouring cavity is used for pouring slurry to form a tower drum segment; a positioning assembly is arranged on the segment mold unit, the positioning assembly comprises a protruding piece and a sealing piece arranged around the protruding piece, the protruding piece is arranged in the pouring cavity through the opening, the protruding piece is provided with a plug-in interface communicating with the pouring cavity, the sealing piece seals the gap between the protruding piece and the wall surface surrounding the opening, and the sealing piece is detachably connected with the segment mold unit; a plug-in component is arranged in the pouring cavity through the plug-in interface, the plug-in component has two opposite end portions, one end portion is overlapped on the protruding piece, and the other end portion is arranged through the segment mold unit to form a connecting hole on the tower drum segment. The mold provided by the embodiment of the application is easy to form and convenient to demold.

The application relates to a kind of inner mould lifting type core mould vibration pipe making machines, and relates to the equipment for making reinforced concrete drainage pipe, comprising frame, outer mould, inner mould, feeder and turntable supported on machine pit, and the turntable is connected with driving mechanism;Two work position holes are arranged on the turntable, and the outer mould is arranged above the turntable and at the work position hole;Guide rail is connected on the frame, and scraping and rolling forming mechanism is arranged at the discharging end of the feeder, and the two sides of the scraping and rolling forming mechanism are connected with guide frame, the guide frame is arranged on the guide rail, and the guide frame is connected with the frame through guide frame lifting oil cylinder;Inner mould lifting mechanism and inner wall smoothing mechanism are arranged below the turntable, the inner mould lifting mechanism is arranged on the frame, the inner mould is connected with the inner mould lifting mechanism, and the inner mould is driven by the inner mould lifting mechanism to extend into the interior of the outer mould from one work position hole;The inner wall smoothing mechanism extends into the formed concrete pipe from another work position hole.The reinforced concrete drainage pipe made by the application is dense and smooth.

This invention relates to the field of parking bollard technology, and proposes a spherical hollow parking bollard, comprising a base and a sphere connected in sequence, both of which are hollow structures. The inner wall of the base has at least two slots, and it also includes a bottom plate with locking blocks for engaging with the slots. After the locking blocks engage with the slots, the bottom plate closes the base. This technical solution solves the problem of the excessive weight and inconvenience of transporting solid parking bollards in the prior art.

The utility model discloses a vertical pouring prefabricated box culvert shaping template which comprises an outer forming die and an inner forming die, a pouring cavity is formed between the outer forming die and the inner forming die, and the outer forming die is formed by splicing two first supporting side templates and two second supporting side templates. The adjacent first supporting side formwork and second supporting side formwork are detachably connected through a sealing connecting assembly, a lower sealing assembly is arranged at the bottom of the outer forming die, a synchronous inner supporting assembly is arranged in the inner forming die, and a pouring sealing assembly is arranged at the top of the outer forming die. The box culvert pouring sealing device has the advantages that the structure is simple, uniform pouring work of concrete is facilitated, demolding work of a formed box culvert is facilitated, the overall sealing performance is good during pouring, stable supporting can be provided for an inner forming mold, and the problem of deformation of the inner forming mold is avoided.

The utility model relates to the technical field of precast beam inner mold dismantling tools, in particular to a precast beam inner mold dismantling dragging platform. The platform comprises a platform body, and the platform body comprises a sliding plate arranged in the length direction of the precast beam inner mold and a supporting frame used for pushing the sliding plate to the position below the inner mold. A winch used for pulling the inner mold is arranged at the end, away from the inner mold, of the sliding plate. And damage to the precast beam caused by the fact that the inner mold extrudes the side wall of the opening of the precast beam when the winch pulls out of the inner mold can be prevented.

This invention discloses a manufacturing equipment and method for directly assembling a reinforcing cage on a mandrel. A first side support and a second side support are provided on a foundation. A first die is mounted on the first side support; a second die is mounted on the second side support; a mandrel is positioned between the first and second side supports and connected to the first and second die; reinforcing bars are connected between the first and second die, and insulating supports are provided to adjust the spacing; a welding machine winds spiral reinforcements onto the reinforcing bars, and as the welding machine moves, the spiral reinforcements are welded to the reinforcing bars to form a reinforcing cage. The reinforcing cage is then directly assembled and welded on the mandrel. This overcomes the technical problems of not being able to directly assemble and weld the reinforcing cage on the mandrel, the complex assembly process, low efficiency, and the tendency for local deformation to occur during assembly.

The utility model provides a mould assembly for processing a ceramic tube, which comprises a rubber sleeve, a mould core, a mould core, a mould core, a mould core, a mould core, a mould core, a mould core, a mould core and a mould core, and is characterized in that the mould core is provided with a top end and a bottom end; the core body is provided with a first connecting end and a first matching end which are oppositely arranged in the extending direction of the rubber sleeve, the first connecting end is in contact fixation with the bottom end, the first matching end extends into the rubber sleeve and is arranged close to the top end, the end face of the first matching end is a curved surface, and an annular first interval is formed between the side wall of the core body and the side wall of the rubber sleeve; the top plug is provided with a second connecting end and a second matching end which are oppositely arranged, the second connecting end is in contact and fixed with the top end, the second matching end extends into the rubber sleeve, the end face of the second matching end is a curved surface, a second interval is formed between the first matching end and the second matching end, the first interval is communicated with the second interval, and the rubber sleeve, the core body and the top plug are matched to form a U-shaped cavity. By the adoption of the structure, the problem that in the prior art, a mold is complex in structure and not easy to disassemble and assemble can be solved.

The invention discloses PCCP pipe manufacturing equipment based on a fixed pedestal method and a forming method, and relates to the technical field of PCCP pipe production equipment.The equipment comprises an operation platform, a first circulation component, a second circulation component, a third circulation component, a demolding component, a pouring component and a hoisting component; the plurality of working platforms are arranged in a foundation pit in the working area; the first circulation component is arranged on one side of the top of the operation area. The second circulation component and the third circulation component are arranged on the other side of the top of the operation area; the pouring part is used for pouring concrete into the mold main body assembled in the operation holes to form PCCP pipes, and the PCCP pipes are cured in the corresponding operation holes; the method comprises the steps of operation preparation, mold closing operation, pouring operation, maintenance operation and mold removal operation. According to the equipment, the problems that in traditional production and manufacturing, the occupied space is large, and the structure is complex are solved, the requirement for the height of a plant is relatively low, and a PCCP core pipe finished product stable in product quality can be formed through pouring with the method.

A bellmouth positioning and processing device relates to the field of core mold processing. Comprising an inner mold, an outer mold, a socket steel ring and a socket bottom tray, the inner mold and the outer mold are concentrically arranged, the socket steel ring is located at the top end between the inner mold and the outer mold, and the socket bottom tray is located at the bottom end between the inner mold and the outer mold; the device further comprises a plurality of positioning assemblies, the positioning assemblies are evenly distributed on the outer mold in a circumferential mode, each positioning assembly comprises a positioning pin, and the positioning pins are used for penetrating through the outer mold and supporting the socket steel ring. The positioning assembly further comprises a positioning pin sleeve, a placement hole is formed in the outer die, the positioning pin sleeve is connected into the placement hole of the outer die, and the positioning pin is movably connected into the positioning pin sleeve. According to the utility model, the production efficiency is improved, and the labor intensity is reduced; the application of the mold is enhanced, and the user cost is reduced.

The utility model discloses a gypsum core mold supporting tool, and relates to the technical field of composite material production. The device is characterized by comprising a first aluminum pipe, the upper end of the first aluminum pipe is connected with a lifting unit, and the upper end of the lifting unit is connected with a second aluminum pipe; an arc-shaped supporting plate is mounted at the upper end of the second aluminum pipe; a plurality of supporting units are installed in the circumferential direction of the first aluminum pipe, a third aluminum pipe is movably inserted into a lower end opening of the first aluminum pipe, and the third aluminum pipe can control the opening and closing angles of the supporting units when moving in the first aluminum pipe in the vertical direction. A limiting unit used for limiting the position of the third aluminum pipe is arranged on one side of the first aluminum pipe. The supporting tool can replace manual work to support the top round pipe in the process of disassembling the steel mold in the gypsum core mold, the operation efficiency can be effectively improved, and the safety risk in the operation process can be reduced.

The invention discloses an inner formwork transporting and supporting system for a prefabricated box girder and a using method. The system comprises a support, a horizontal driving assembly, a bearing assembly and a controller. The horizontal driving assembly is arranged on the support, the bearing assembly comprises a supporting base, a driving piece, a first adjustable supporting piece, a second adjustable supporting piece and a third adjustable supporting piece, and the supporting base is installed on the support in a sliding mode; the driving piece is fixedly mounted on the supporting seat and is in power connection with the horizontal driving assembly; a plurality of auxiliary rolling assemblies are arranged on the two sides of the supporting base, each auxiliary rolling assembly comprises a linear driving component, a swing piece and a walking wheel, and the controller is used for controlling the horizontal driving assembly, the linear driving components, the first adjustable supporting piece, the second adjustable supporting piece and the third adjustable supporting piece to act; the method comprises the steps of operation preparation, inner mold supporting and mold removal operation. The system is high in disassembly and assembly efficiency, manual operation in a narrow space is avoided, and the construction efficiency is improved.

The utility model relates to the technical field of cement pipe production, in particular to a cement pipe socket forming device, which not only facilitates the fixed combination of the bottom ends of two groups of molds and improves the assembly rate of the molds, but also can stir concrete at a sprue gate and drive the concrete to vibrate in an interlayer, so that the production efficiency is improved. Concrete can be evenly distributed in the interlayer conveniently, and the cement pipe forming effect is guaranteed; comprising an inner supporting mechanism; the device further comprises two sets of mold mechanisms, a stirring mechanism and a vibration mechanism, the two sets of mold mechanisms are both installed on the inner supporting mechanism and cooperate with the inner supporting mechanism to mold concrete, the stirring mechanism is installed on the inner supporting mechanism and stirs the concrete, and the vibration mechanism is installed on the stirring mechanism and drives the concrete to vibrate.

Systems and methods are disclosed for producing a hollow composite part, such as a CMC airfoil, using a segmented mandrel formed of individual mandrel segments. The individual mandrel segments may be dimensioned to permit extraction from highly twisted and / or curved parts. There is provided a system for producing a curved and / or twisted hollow composite part (100), comprising a first segment (20) of cavity mandrel (200) configured for a first portion of the composite part (100), the first segment (20) having a first opening (210) extending therethrough; and a second segment (20) of cavity mandrel (200) configured for a second portion of the composite part (100), the second segment having a second opening (210) extending therethrough that is substantially aligned with the first opening (210), wherein the second segment (20) is disposed adjacent to the first segment (20).

The present invention provides a formwork device and an inner formwork that enable the easy manufacture of precast members having a space formed inside that extends in a predetermined axial direction. [Solution] An inner formwork (3) for forming a space extending in a predetermined axial direction (A) in a precast concrete member (30), comprising: a formwork panel (11) having an outer surface and composed of a plurality of panels (16, 17) extending along the axial direction; and a support mechanism (12) for supporting the formwork panel, wherein the formwork panel consists of a plurality of first panels (16) and a plurality of second panels (17) arranged alternately in the circumferential direction; and the support mechanism includes a first support mechanism (18) that supports the plurality of first panels so as to be movable in the radial direction; and a second support mechanism (19) that supports the plurality of second panels so as to be movable in the radial direction.

The invention relates to the technical field of bridge engineering piers, and discloses a UHPC non-dismantling formwork pier, a UHPC formwork forming device and a pier construction method.The UHPC non-dismantling formwork pier comprises a non-dismantling formwork, a vertical stress component and a stress base body, the non-dismantling formwork comprises a formwork body and a reinforcing framework, the reinforcing framework is pre-fixed to the formwork body and comprises stirrups and positioning blocks, and the positioning blocks are fixed to the stirrups and the positioning blocks; the stirrup is spirally wound in the formwork body, at least one part of the stirrup is embedded into the inner wall of the formwork body, the inner wall of the formwork body or the inner wall of the formwork body and the stirrup form a constraint area, the positioning block is provided with a first positioning hole matched with a vertical stress component, and the projection of the first positioning hole in the vertical direction is located in the constraint area. The vertical stress component penetrates through the first positioning hole, and the constraint area is filled with the stress base body. The bearing capacity, economical efficiency, durability and construction efficiency of the pier can be improved.

The utility model relates to a lower die device of a wet forming machine. Comprising a mold outer frame assembly, a mold inner core assembly is installed on the mold outer frame assembly, a forming cavity is formed in the mold inner core assembly, and an inner cavity bottom plate is slidably connected into the forming cavity; the device further comprises a pressure head assembly. The mold inner core assembly comprises a left long edge core structure and a right long edge core structure, left and right side plates are installed on the inner side faces of the left and right long edge core structures respectively, and a first adjusting unit and a second adjusting unit are arranged between the left and right side plates. The adjusting unit I is connected with a rear upper sealing plate and a rear lower sealing plate; the adjusting unit II is connected with a front upper sealing plate and a front lower sealing plate; the pressing head assembly comprises a pressing head body structure, a pressing drainage unit is connected to the bottom of the pressing head body structure, a water outlet channel is formed in the middle of the pressing drainage unit, a plurality of drainage water suction openings are formed in the bottom face, and a plurality of drainage connectors are installed on the top face. According to the utility model, multidirectional drainage can be carried out in the extrusion forming process, the forming cavity of the mold can be adjusted according to the specification and the size of the road edge stone, and the device has the function of multiple production by one type, and is high in applicability and flexibility.

The utility model discloses an internal mold shared by multiple sections of a large box girder of a high-speed rail, which is characterized in that support columns are fixedly mounted at the bottom in the box girder internal mold side by side, a sliding seat is detachably mounted above the support columns, a lifting pulley is mounted at the bottom of the sliding seat, a lifting seat is mounted at the upper part of the sliding seat, and first pushing oil cylinders are movably hinged to two ends of the top of a top mold; piston shafts of the first pushing oil cylinders are movably hinged to the side dies at the corresponding positions, second pushing oil cylinders are movably hinged to the lower portions of the side dies, and piston shafts of the second pushing oil cylinders are movably hinged to the corner dies at the corresponding positions. According to the box girder inner mold installation device, installation work of a box girder inner mold can be rapidly completed, the third pushing oil cylinder, the second pushing oil cylinder and the first pushing oil cylinder are started, the top mold descends, the side mold and the corner mold are overturned to be separated from the inner wall of a box girder, then the lifting type idler wheels make contact with the bottom plate, and at the moment, the sliding bases can rise to be separated from the supporting columns; and the sliding seat and the box girder inner mold can be integrally pulled out from the interior of the box girder, the dismounting efficiency is improved, and the labor intensity of workers is reduced.

The utility model discloses a concrete cover prefabricated part mould which comprises a mould frame, a bearing rod, a hollow first cylinder piece and a hollow second cylinder piece, the mould frame is provided with a bottom plate part, a mounting hole group and an annular hole arranged around the bottom plate part, the bottom plate part is provided with an open hole, the mounting hole group comprises at least two mounting holes which are sequentially arranged from top to bottom, and the first cylinder piece and the second cylinder piece are arranged on the bearing rod. The bearing rod detachably penetrates through the corresponding mounting hole, the first cylinder part penetrates through the annular hole in a lifting mode, the second cylinder part penetrates through the open hole in a lifting mode, the second cylinder part and the first cylinder part abut against the upper portion of the bearing rod, and a forming cavity is jointly defined by the inner cylinder wall of the first cylinder part, the bottom plate part and the outer cylinder wall of the second cylinder part; the forming cavity is provided with an upward opening, the bearing rod can be moved from one mounting hole to the other mounting hole, the abutting joint positions of the second barrel piece and the bearing rod and the abutting joint positions of the first barrel piece and the bearing rod both ascend or descend, and the depth of the forming cavity is correspondingly increased or decreased.