53results about How to "Quick demolition" patented technology

The invention relates to a round hole die of an equipment base pre-reservation anchor bolt hole, in particular to an equipment base pre-reservation round anchor bolt hole die, which is characterized in that the equipment base pre-reservation round anchor bolt hole die comprises a center shaft, a first bracing and shrinking device, a second bracing and shrinking device, four templates and four joint sealing plates, wherein the four templates are all in an arc shape and uniformly distributed along a circumference, each joint sealing plate is inserted between two adjacent templates, the four templates and the four joint sealing plates enclose to form a cylindrical space, first template supports on the four templates are all articulated to the first bracing and shrinking device, second template supports on the four templates are all articulated to the second bracing and shrinking device, the lower part of the center shaft, the first bracing and shrinking device and the second bracing and shrinking device are all arranged in the cylindrical space enclosed by the four templates and the four joint sealing plates, the upper part of the center shaft is arranged above the cylindrical space and is provided with outside threads, and a handle is arranged at the upper end of the center shaft. The die is simple to operate and rapid to disassemble and can be used repeatedly.

The invention provides a movable bottom formwork trolley system suitable for a large concrete prefabricated component. The movable bottom formwork trolley system comprises multiple movable bottom formwork trolleys and multiple H-bars. A locating groove is formed between the adjacent H-bars. The movable bottom formwork trolleys are arranged in the locating grooves. Each movable bottom formwork trolley comprises multiple bottom formwork trolley units which are connected in series and at least one bottom formwork steel plate with the surface coated with release agent, wherein the bottom formwork steel plates are independent of the bottom formwork trolley units. Each bottom formwork trolley unit comprises multiple sets of bearing devices, multiple pairs of traveling wheels and a formwork lifting device. The formwork lifting devices are connected with the bearing devices, located below the bottom formwork steel plates and used for lifting or descending the bottom formwork steel plates, so that in concrete pouring process, the top surfaces of the bottom formwork steel plates and the top surfaces of wing plates of the H-bars are located on the same plane, and therefore a bottom formwork plate of the large concrete component can be formed. Through different splicing combinations, the prefabricated bottom formworks can be formed for the large concrete prefabricated component of different types and sizes, the bottom formwork can be quick spliced and detached and also can be used for transfer of the component is also considered.

The invention relates to a prefabricated reinforced concrete culvert T-shape mould, which can solve the problems of hard installment, hard control on the verticality and surface smoothness; loose connection between plates, and concrete leakage, etc. The invention comprises a bottom support, a bottom plate mould, and side plate moulds, while said mould is rectangle whose two sides are mounted with side moulds (2); and two ends are mounted with support side moulds (4); two ends of side mould (2) are mounted with side plate fixed skeletons (5); side moulds () and the support side mould (4) and the side plate fixed skeleton (5) form special-shaped side mould; the baffle mould (6), chair-shaped bottom plate mould (7) and the trapezium bottom mould (8) form the bottom support mould; and the side mould forms the whole mould with bottom support mould. The invention has simple structure and easy installment, which can save cost and labor force, to improve the construction speed and quality.

The invention provides a spray maintenance telescopic spray head. The spray maintenance telescopic spray head comprises a connecting pipe, the connecting pipe is connected with a water supply pipe, asliding body is slidably connected in the connecting pipe, under the action of water pressure, the sliding body partially extends out of the connecting pipe, under the action of no water pressure, thesliding body retracts in the connecting pipe, a water channel is arranged in the sliding body, a spray head device is rotatably connected to the tail end of the sliding body, the spray head device communicates with the water channel, and the spray head device swings left and right under the action of water pressure by taking a central shaft of the sliding body as a rotating shaft. According to the spray maintenance telescopic spray head, the technical effects that the site occupancy rate is greatly reduced, the construction difficulty and the construction cost are greatly reduced due to sitesaving, the telescopic swing spray head has no interference with formwork erecting and detaching of cast-in-place components, formwork erecting and detaching are conveniently and rapidly carried out,the construction efficiency is improved, the economic benefit is obvious, the spray area of the spray head is increased through the swing spray head, the spraying effect is better, the curing effect is improved, the strength of the components is guaranteed, and water resources are saved are achieved.

The invention discloses a movable die core of a concrete core slab and box girder pouring die, belongs to a concrete pouring die and aims to provide a movable die core of a die, which is rapid and convenient in die assembly and disassembly and can prevent the inner surface of a pouring body being damaged. The movable die core of the concrete core slab and box girder pouring die comprises a die core which adopts a tubular structure. The die core is formed by oppositely closing half dies which are shaped like a Chinese character 'ao' or are in a semicircular shape. Each half die is formed by an intermediate plate (3), a left lateral plate (1), a right lateral plate (5), a plurality of left connecting rods (11), a plurality of right connecting rods (9) and pull rods (10), wherein the left lateral plate (1) and the right lateral plate (5) are respectively hinged to the left and right sides of the intermediate plate (3); the left connecting rods (11) are hinged to the left lateral plate (1), the right connecting rods (9) are hinged to the right lateral plate (5); the pull rods (10) are hinged to the corresponding left connecting rods (11) and right connecting rods (9). The movable die core of the concrete core slab and box girder pouring die has the advantages of high efficiency, low labor intensity, small drawing friction force, no damage to the inner surface of the pouring body and the like. The invention discloses a die for pouring a concrete core slab or a box girder.

The invention discloses a mobile formwork for station canopy construction and a construction method for a station canopy, comprising a left warehouse formwork, a middle warehouse formwork and a right warehouse formwork. The formwork includes the formwork system, gantry system, walking system, hydraulic system, control system and bottom support for the canopy of the construction station; the formwork systems of the left warehouse, middle warehouse and right warehouse formwork are in order connection; the formwork can be separated and adjusted, which can not only solve the problem that the ordinary integral formwork cannot pass through the column and beam structure, but also realize the function of the integral formwork, save time and effort, avoid delaying the construction progress, and solve the problem of It solves the problem that the quality of the traditional construction scheme of the station canopy is difficult to control. The technical scheme is applicable to the construction of rain-proof sheds for stations with various spans, and can ensure the construction quality of the canopy. The overall structure of the formwork is simple and simple, the stress is clear, and the safety is high.

The invention relates to a cross-channel-segment pipeline structure and a mounting method thereof. The cross-channel-segment pipeline erection adopts a cross-channel-segment pipeline overhead structure. Anchor blocks are arranged at the two ends of the river channel, buttresses are arranged in the river channel at certain intervals. In the installation process of the cross-channel-segment pipeline, a door-shaped frame structure and a track reinforcing structure between the door frames are adopted for transportation. Traction is achieved through a winch and a steering pulley, splicing at jointsof the cross-channel-segment pipeline is implemented through with a pipeline connection construction platform, and formworks of the anchor blocks and the buttresses are erected through a hanging frame structure, a movable pouring and vibrating system structure and a fixed formwork structure. The structure provided by the invention can effectively solve the problem that pipeline erection encounters a river, the construction progress is accelerated and the construction efficiency is improved by adopting a fixed door-shaped track and transportation trolley combined pipe conveying technology, andthe formwork is quickly assembled and disassembled by adopting a cross-channel-segment pipeline anchor block and buttress fixed quick formwork erecting technology, so that repeated turnover use is realized, the material waste is reduced, and the cost is saved.

The invention relates to the technical field of prefabricated buildings, in particular to a separated precast prestressed concrete slab type stairway and a production process thereof. An existing slabtype stairway is large in dead weight and complicated in production process. The separated precast prestressed concrete slab type stairway comprises a stairway body, wherein the stairway body sequentially comprises an upper platform plate, stair section plates and a lower platform plate from top to bottom; prestressed reinforcing steel bars are arranged on the lower part in the stairway body along the length direction; reserved installation holes and reserved hole reinforcing ribs are respectively arranged on the surfaces of the upper platform plate and the lower platform plate; the stair section plates are provided with hoisting points and demoulding hoisting points; and the prestressed reinforcing steel bars are provided with reserved prestressed reinforcing steel bar plugging slots atreinforcing steel bar outlet holes of flat planels. Compared with a traditional precast stairway, 20 percent of concrete can be saved, 30 percent of reinforcing steel bars can be saved, the dead weight is light, fast production can be realized, and the separated precast prestressed concrete slab type stairway and the production process thereof have a favorable development prospect in the technicalfield of prefabricated buildings.

The invention discloses an isolation type double-lining shield tunnel construction structure and a construction method. The construction structure comprises a primary lining, an isolation buffer layer and a secondary lining, the bottoms of the two sides of the isolation buffer layer are each provided with water collecting pipes, and a plurality of water drainage pipes are arranged between the water collecting pipes and an opening piece box culvert; the construction method comprises the steps that 1, the primary lining and the opening piece box culvert are constructed; 2, a water collecting pipe and a water draining pipe are mounted; 3, an inverted arch filling layer is constructed; 4, the isolation buffer layer is constructed; 5, the secondary lining below a tunnel waist line is constructed; and 6, secondary linings between a middle partition wall, an air duct plate and the tunnel waist line and the air duct plate are constructed. According to the isolation type double-lining shield tunnel construction structure and the construction method, damage to a secondary lining structure caused by water leakage of the primary lining can be effectively reduced, the construction efficiency is improved, the air duct plate and the middle partition wall are constructed synchronously through a special formwork trolley, synchronous construction of residual structures can be achieved under the condition that material transportation is not affected. The isolation type double-lining shield tunnel construction structure and the construction method has the advantages of quick assembly, quick positioning, quick form removal and short process circulation time.

The invention discloses a construction template which comprises groove modules (1) and bolts (2) or latches, wherein two flanges (4) of each groove module (1) are respectively provided with a hole (5), and the holes (5) on the two flanges (4) are mutually aligned. When the template is assembled, a plurality of groove modules (1) are sequentially neatly arranged, so that the flanges (4) of two adjacent groove modules (1) are pressed against each other, and the holes (5) of the flanges are corresponding to each other; and the bolt (2) or latch after passing through the hole (5) is connected with an adjacent groove module (1) so as to form a construction template for concreting. The construction template can be applied to the cast-in-place concrete construction of beams, boards, columns and shear walls. The small-sized groove modules (1) in a unified form can be flexibly assembled into a beam/board/column/shear wall template in a required size according to the needs of construction, therefore, the construction template has the advantages of good flexibility, light weight and disassembling convenience; the construction template can be subjected to mechanized production, thereby facilitating the controlling of the construction quality, and improving the construction efficiency; and the construction template is made of hard materials, therefore, the construction template is large in rigidity, high in bearing capacity and good in overall performance.

The invention belongs to construction field of concrete structure and particularly relates to mold for concrete and construction field, which includes a mold carrier, a magnetic attraction body, a magnetic attraction particle, an elastic tube body, a cover plate and the like. The magnetic attraction body is arranged on the mold carrier. The magnetic attraction particle is arranged in elastic tube body. The elastic tube body provided with the magnetic attraction particle twines on the mold carrier provided with magnetic attraction body. The mold for concrete preformed hole and construction method mainly uses the magnetic attraction of the magnetic attraction body and then the magnetic attraction particle in the elastic tube body will be adsorbed on the outer wall of the mold carrier, which can separate the concrete and the mold carrier when placing the concrete. The elastic tube body with the magnetic attraction particle will be pulled out after initial set of concrete and then the cavity of a ring mold carrier is found around the mold carrier, thus the mold carrier is easy to take out. The mold for concrete preformed hole and construction method is simple in production, convenient and rapid to install and disassemble and low in cost, and the mold can be reused.

The invention discloses a prefabricated composite slab general combined assembling die and a using method thereof. The prefabricated composite slab general combined assembling die comprises a die table, composite slab forming dies formed by connecting first general edge formworks, second general edge formworks, third general edge formworks and net scale edge formworks in sequence are installed onthe die table, and at least one of the first general edge formworks, the second general edge formworks, the third general edge formworks and the net scale edge formworks serves as a rib outlet edge formwork. Each rib outlet edge formwork comprises an upper assembly and a lower assembly, wherein the upper assembly and the lower assembly are connected through fasteners, and a through-long rib outletgroove is reserved between the upper assembly and the lower assembly; and a first sealing bar is installed on the lower surface of the upper assembly, a second sealing bar is installed on the upper surface of the lower assembly, the thickness of the first sealing bar is larger than that of the second sealing bar, and the height of the rib outlet groove is smaller than the sum of the thickness ofthe first sealing bar and the thickness of the second sealing bar. In formwork changing, only the net scale edge formworks need to be replaced, and in formwork removing, only the net scale edge formworks and the upper assemblies of the rib outlet edge formworks need to be disassembled.

The invention relates to a walking type pipe gallery formwork supporting device. The walking type pipe gallery formwork supporting device comprises a vehicle body, an upper truss, an inner formwork assembly, a cross beam lengthening joint and a length-adjustable inclined strut, wherein the upper truss is connected with the top of the vehicle body; a short section formwork is fixedly connected to the upper portion of the cross beam lengthening joint; a chamfering formwork is arranged at the upper end of an inner side formwork; an upper cross beam of the upper truss is fixedly connected with a top formwork; the two ends of the upper cross beam of the upper truss are connected with the chamfering formwork of the inner side formwork through the cross beam lengthening joint; and one end of the length-adjustable inclined strut is connected with the cross beam lengthening joint. According to the walking type pipe gallery formwork supporting device, the inner side formwork can be adjusted to be fixed to the design position through the length-adjustable inclined strut, and side formworks can be adjusted at multiple angles and in multiple directions; the formwork splicing speed is high, side walls and a top plate can be poured at the same time, the operation efficiency can be greatly improved, the construction period is shortened, and economical efficiency is good; the vehicle body is of a bailey frame structure, the dead load is low, and walking is convenient; and machining and combination can be conducted in a segmented manner in the longitudinal direction, and the walking type pipe gallery formwork supporting device is very flexible to use in an operation section with large longitudinal slope changes.

The invention belongs to a construction method of an equipment foundation reserved square hole. The construction method of the equipment foundation reserved square hole is characterized by comprising the following steps: first step, assembling a die; second step, erecting the die: adjusting the dimensions of an upper opening of the reusable die of the equipment foundation reserved square hole, unscrewing a fourth positioning nut, moving a second sliding adjustment seat downwards to reach the rectangular dimensions of a corner die plate upper opening, unscrewing a second positioning nut, moving a first sliding adjustment seat downwards to reach the rectangular dimensions of an corner die plate lower opening, then screwing a third positioning nut and a first positioning nut, and taking a plastic film or a binding tape as a protective layer of the die plate to wrap up on the outside walls of the corner die plate and a middle die plate; third step, pouring concrete; fourth step, removing the die plates, extracting the corner die plate and leaving a square hole opening; and fifth step, cleaning the hole opening to obtain the equipment foundation reserved square hole. The method is simple to operate and is fast in die removal, and the die can be reused.

The invention provides a formwork system capable of being automatically adjusted and walking and an operation method thereof. The formwork system comprises a formwork system, a steel frame system, a hydraulic system and an electrical system; the formwork system comprises an inner wall body formwork, an outer wall body formwork, a bottom formwork and an inner wall top plate formwork; the steel frame system comprises an inner wall steel frame system and an outer wall steel frame system; an inner wall formwork is composed of the inner wall body formwork, the inner wall top plate formwork and the inner wall steel frame system; an outer wall formwork is composed of the outer wall body formwork and the outer wall steel frame system; a pouring cavity is formed between the inner wall formwork and the outer wall formwork; the electrical system controls the inner wall formwork to be demolded and walk. The integrity is good. According to the formwork system capable of being automatically adjusted and walking and the operation method thereof, one construction joint can be reduced through one-time pouring of concrete, the structural integrity is better, and the appearance quality of the concrete is better; and the wall-penetrating opposite-pulling process is omitted, a structural wall body is not provided with a wall-penetrating hole, and the structural appearance and the waterproof performance are improved.