335results about How to "Simple installation and construction" patented technology

The invention relates to a novel multipurpose composite insulation board and a construction method and a processing device thereof. The novel multipurpose composite insulation board is manufactured by forming notches 7 with countersunk head openings 56 and through holes 9 with countersunk head openings 8 on the four sides and in the middle of an XPS insulation board and reserving connection intensifying anchoring supporting seats 2 in the through holes 9 or the notches of the board or reserving supporting seats 95 and 96 on the four sides of the board or sticking an aluminum foil reflecting layer 3 on the upper surface of the insulation board after forming a square or round-bottom groove on the insulation board. A conventional square supporting seat is improved into a supporting seat with a countersunk head of which the four sides are 5 to 50 millimeters wider than those of a supporting block and the upper part is embedded into the countersunk head opening, so support stressed area can be enlarged, and more importantly, a broken bridge insulating function is realized. The insulation board is easy to manufacture and simple and convenient to install and realizes production site assembly in a factory, so on-site wall plastering operation, facing tile wetting operation and paint spraying operation are eliminated; a nail framework does not needing paving; and the insulation board is widely applicable for insulation of warming ground surfaces, wall faces and roofs.

A power management and monitoring system for controlling an electrical device powered by a power supply is disclosed. The system may include a circuit breaker enclosure box structured to monitor and manage power to the electrical device via a centralized data bus and centralized power bus. The circuit breaker enclosure box may include at least a remotely actuated solid state electronic circuit breaker (ECB) that monitors and manages power to the electrical device and a switch connected to the ECB and capable or remotely bypassing the ECB. The system may also include a display and controller that can remotely monitor and control the electrical device by remotely actuating the ECB.

A valve spring device using pressurized gas for use in biasing a reciprocating valve which moves between a seated position and open position. The device features a static housing having a static chamber what is translateably engaged with dynamic housing. Chambers inside both housings are sealably engaged such that the dynamic housing translates away from the static housing when pressurized gas is communicated to the engaged sealed chambers thereby biasing the dynamic housing away from the static housing and moving the attached valve. Timing of oscillation of the translation and resulting valve timing is controlled by a controller activating a control valve between a pressurizing state and a venting state. The timing may be adjusted to accommodate the engine timing through varying the controller's activation of the control valve and optionally varying the pressure of the gas using a regulator.

The invention discloses a cloud-platform-based real-time monitoring system of operation of the elevator internet of things. A data sensing front end can monitor the practical operating state of an elevator and the working state of a sensor node in real time; a data transmitting server can conduct distributing processing on data; a node operation and maintenance terminal is arranged to conduct property detecting and breakdown management of the sensor node; an elevator monitoring terminal can automatically record elevator operating state data, provides elevator breakdown alarming and early alarming information according to a data analysis result and sends tasks to a maintainer mobile terminal in real time to solve breakdown, and meanwhile, the corresponding alarming information can also be received by a real estate managing department; the breakdown treatment schedule can be checked in real time through a cloud platform, and a maintainer is supervised and urged to treat in time to strengthen the monitoring and managing capacities on the elevator; through a cloud-platform government monitoring and managing unit, the operating states of all the elevators within an administrative region can be seen, the good or bad conditions of the elevators are controlled in real time, and the monitoring and managing capacities of the cloud-platform government monitoring and managing unit are exerted.

An embodiment may comprise a power management control and monitoring system and integrated remotely actuated circuit breaker actuator apparatus that provides a greatly simplified power management control and monitoring system.

The invention discloses a wireless magnetic induction intensity vehicle detection method and a wireless magnetic induction intensity vehicle detection device. The method comprises the following steps of: a, sensing the space magnetic induction intensity and converting the space magnetic induction intensity into an electric signal; b, transmitting and amplifying the electric signal in the step a in a serial mode; c, converting the electric signal in the step b into a digital signal through A / D conversion, and calculating a magnetic induction intensity value; d, comparing the obtained magnetic induction intensity value in the step c with the space constant magnetic induction intensity value so as to obtain a detection result, judging whether a vehicle is present or not when the magnetic induction intensity value is greater than or smaller than a threshold, and performing advanced signal processing on a sampled signal to acquire the traffic, vehicle speed, occupied time, vehicle type, and other traffic information; and e, transmitting the detection result in the step d to an information center in a wireless mode. The wireless magnetic induction intensity vehicle detection device comprises a magnetic induction intensity sensor, a multiplexer, an analog signal amplifier, a microcontroller and a wireless data transceiver module, which are connected in turn and are connected with a power supply. The wireless magnetic induction intensity vehicle detection method is simple and convenient, and the wireless magnetic induction intensity vehicle detection device is convenient to set.

Disclosed is a two-storey modular villa building and a construction method thereof. The villa building comprises a foundation, structural upright columns, a gable wall, longitudinal walls, floors and a roof. The structural upright columns are connected with the foundation, the gable wall and the longitudinal walls are connected with the structural upright columns, the floors and the roof are connected with the gable wall and the longitudinal walls, the gable wall comprises a first-storey gable wall and a second-storey gable wall, modular square plate walls are pieced together to form the first-storey gable wall, modular square plate walls and modular triangular plate walls are pieced together to form the second-storey gable wall, each longitudinal wall comprises a first-storey longitudinal wall and a second-storey longitudinal wall, modular square plate walls are pieced together to form the first-storey longitudinal walls and the second-storey longitudinal walls, each modular square plate wall comprises a square external inorganic plate, a square internal inorganic plate and vertical inorganic plate strips parallelly distributed between the square external inorganic plate and the square internal inorganic plate. The modular square plate walls are pieced together to form the first-storey walls and the second storey walls of the villa building, the first-storey walls and the second-storey walls are connected with the floors, so that a firm integral frame is formed and has quite high seismic resistance, and the integral weight of the villa building is greatly reduced.

The invention discloses an infrared perimeter protection method for measuring pulsed flight time and distance by using a high laser pulse. In the method, a front end detection system, which adopts infrared laser radar technology, is provided and comprises subsystems such as a laser emission system, a laser receiving system, a data processing and control system, a data transmission system and the like. A detector in the infrared perimeter protection method adopts an emission and receiving integrated design and performs identification by the reflection of an object; the detection has a certain laser emission angle and adopts a light wave emission mode of a laser radar; when the object intrudes, a laser warning sensor can directly measure and output the position of the intruder; an object identification algorithm is set in a warning region; and the size and speed of the object are computed according to the traversing condition of the object; therefore, various interference false alarms are eliminated; and two laser warning sensors are combined and installed in a staggered mode to output a wide band-shaped light beam so as to form a strict protecting light band; therefore, the infrared perimeter protection method has high protection reliability.

The invention discloses a polyethylene cable duct. The polyethylene cable duct is characterized by being prepared from a modified polyethylene material; and the modified polyethylene material consists of the following components by weight: 100 parts of base material, 1 to 5 parts of ethylene propylene diene monomer resin, 0.1 to 1 part of polytetrafluoroethylene, 0.1 to 1 part of calcium stearate, 0.1 to 1 part of polyethylene wax and 0.01 to 0.1 part of pigment, wherein the base material consists of 85 to 95 weight percent of high-density polyethylene and 5 to 15 weight percent of ultra-high molecular weight polyethylene. The polyethylene cable duct has the following excellent performance: (1) high tensile strength; (2) high impact strength: the polyethylene cable duct has excellent low-temperature impact resistance and extremely low brittleness temperature and can be safely used at the temperature of between 20 DEG C below zero and 60 DEG C; (3) high abrasion resistance; (4) high toughness, flexibility and shock resistance; (5) high stress cracking resistance and low notch sensitivity; (6) corrosion resistance and long service life; and (7) simplicity in cable threading.

A device for repairing underground water ammonia nitrogen pollution in a normal position and abnormal position combined mode mainly comprises a pumping well and a water injection well, wherein a water suction pump is installed in a well pipe of the pumping well, and a boosting pump is installed in a well pipe of the water injection well; well sieves are installed on the parts of the well pipes of the pumping well and the water injection well under the water level; a water conveying pipeline is connected between the water suction pump and the boosting pump; and the well pipes of the pumping well and the water injection well are respectively installed in respective protecting walls with pores of the pumping well and the water injection well, and filling materials are filled between the well pipes and the protecting walls to form a permeable reaction wall. The invention further discloses a method for repairing underground water ammonia nitrogen pollution by utilizing the device.

Disclosed is a real-time antitheft monitoring method for cables based on a medium voltage power line shielding layer carrier. A carrier communication channel is built by the aid of a cable shielding layer, signals are remotely transmitted from a carrier machine and are coupled onto the cable shielding layer through an inductive coupler by means of the electromagnetic induction principle, a main carrier machine at a master station receives the signals transmitted from the carrier machine through the inductive coupler, signal quality is analyzed and determined, the main carrier machine uploads signal quality information to a monitoring master station through a carrier communication management machine, and the monitoring master station judges whether the cables are stolen or not according to signal strength. A plurality of outlet cables can be detected in an online manner, and related personnel can rapidly shoot troubles according to warning information. The real-time antitheft monitoring method is ingenious in conception and has a fine market prospect, and online antitheft monitoring for medium voltage cables is realized by the aid of signal channel circuit characteristics of an existing shielding layer.

A restoring device for treating fluorine pollution of groundwater mainly comprises a water pumping well and at least one water injection well, wherein a water suction pump is installed in a well pipe of the water pumping well, and a booster pump is installed in a well pipe of the water injection well. The part of the well pipe of the water pumping well and the part of the well pipe of the water injection well, which are located below the water level, are provided with well sieves. A water conveying pipe is connected between the water suction pump and the booster pump, the well pipe of the water pumping well and the well pipe of the water injection well are respectively arranged on respective protecting walls with holes, a fluorine-removed restoring material is filled in the well sieves of the well pipes and the protecting walls to form a permeable reactive barrier, and materials having supporting effects are filled in parts above the well sieves of the well pipes and the protecting walls. The invention further provides a restoring method for treating fluorine pollution of the groundwater. Compared with traditional in-situ ex-situ restoring technologies, the restoring device and the restoring method have high applicability and repair rate for the polluted groundwater.

The invention provides a spherical light emitting diode (LED) display screen. The spherical LED display screen comprises a spherical frame and an LED display screen fixed on the outer surface of the spherical frame; the LED display screen comprises a plurality of LED display modules in regular polygon shapes; the display modules have curvatures capable of constructing a ball body; according to the technical scheme, the spherical LED display screen is constructed through the following steps: firstly, the spherical frame is constructed; the spherical frame can be constructed according to a required size; a connection device capable of being connected with the display modules is arranged on the spherical frame; the LED display screen comprises a plurality of the LED display modules in regular polygon shapes; the display modules have curvatures capable of constructing the ball body and are consistent with the spherical frame; and the display modules are spliced on the outer surface of the spherical frame and are fixedly connected with the spherical frame through the connection device, so that the spherical LED display screen is made up.

The invention provides a building shock insulation ditch cover plate structure. The building shock insulation ditch cover plate structure comprises a shock insulation ditch arranged between a shock insulation building body and a field soil body, a water draining component arranged in the field soil body and a shock insulation ditch retaining wall arranged in the shock insulation ditch. A supporting plate is arranged at the end, close to the shock insulation ditch, of the water draining component, a prefabricated cover plate and a cast-in-place laminated layer arranged on the prefabricated cover plate are connected between the supporting plate and the shock insulation building body, both the prefabricated cover plate and the cast-in-place laminated layer are fixedly connected to the shock insulation building body, and a sliding layer is arranged between the prefabricated cover plate and the supporting plate so that the prefabricated cover plate and the shock insulation ditch retaining wall can move more relatively freely under the effects of earthquakes. The building shock insulation ditch cover plate structure is simple in installation and construction, reduces false operations of construction personnel, improves the construction precision and guarantees the fact that the shock insulation building body and a space enclosing structure around can slide freely, and the shock insulation efficiency of the shock insulation structure is improved.

The invention relates to a technical field of building doors and windows and discloses an energy-saving roller shutter. For solving the problem of the low heat-preservation performance of windows in the prior art, the invention puts forward a technical scheme that: the energy-saving roller shutter comprises a broken bridge aluminum window and an outer-layer sunshading roller blind device, wherein the broken bridge aluminum window comprises a frame (1), window slashes (3) with hollow glass, sealing strips, pads (5) and the like and is characterized by comprising the reinforced sealing strips (16) which are elastic strip objects with the outsides connected with a frame outer layer (8) and the lower sides connected with a frame broken bridge (7); each reinforced sealing strip (16) has more than two protruding sealing long strips (16-1) which are sealed with and pressed against a window slash broken bridge (10); and both the frame broken bridge (7) and the window slash broken bridge (10) have a multi-cavity structure with more than three cavities. The energy-saving roller shutter has the advantages of improving the heat-preservation and thermal-insulation performance obviously, producing remarkable airtight and sound-insulation effects, and the like.

A device for repairing underground water nitrate pollution mainly comprises a pumping well and at least one water injection well, wherein a water suction pump is installed in a well pipe of the pumping well, a boosting pump is installed at the top of a well pipe of the water injection well, and the well pipe of the water injection well is connected with a pipeline for conveying carbon sources; well sieves are installed on the parts of the well pipes of the pumping well and the water injection well under the water level; a water conveying pipeline is connected between the water suction pump and the boosting pump; and the well pipes of the pumping well and the water injection well are respectively installed in respective protecting walls with pores of the pumping well and the water injection well, and filling materials are filled between the well pipes and the protecting walls to form a permeable reaction wall. The invention further discloses a method for repairing underground water nitrate pollution by utilizing the device.

The invention provides a remote warehouse monitoring and alarming device based on ZigBee and a microprocessor, and relates to a remote warehouse monitoring and alarming device. The device comprises a system host and a remote controller, wherein the host is provided with a rectangular shell; a liquid crystal display screen is arranged on the front side of the host; an infrared receiver is arranged at the lower left corner of the front side of the host; a temperature-humidity-smoke sensor and a data acquisition window are arranged at and formed in the upper part of the right side of the host; a buzzer is arranged at the lower part of the right side of the host; the upper left side of the host is covered with a solar photovoltaic panel; a sharp-flash indicator light is arranged at a position close to the display screen of the upper right side of the host; a ZigBee antenna is arranged at a position away from the display screen of the upper right side of the host; a GPIO interface is connected with an MSP430FR5962 microprocessor in the host; the interior of the host comprises an MSP430FR5962 mainboard, the temperature-humidity-smoke sensor, the sharp-flash light, the buzzer, the display screen, the infrared receiver, a ZigBee module, a ZigBee wireless network antenna and a photovoltaic power generation management and battery power supply part. The remote warehouse monitoring and alarming device is capable of reminding local staff to handle or evacuate in time.

The invention relates to an installation method of an outer wall heat-insulating plate and a decorating plate and a special steel belt. The installation method adopts the steps: firstly, the treatment of a base layer is performed, and the outer wall heat isolating plate is simply positioned on the wall. The installation method is characterized in that the following constructions are also implemented sequentially: a horizontal base line drawn in a hanging way and an installation line drawn in a springing way are arranged on the outer wall heat insulating plate, the special steel belt is fixed with anchor nails along the installation line, T-shaped hooks on the steel belt are overturned, and the decorating plate is hanged on the T-shaped hooks of the steel belt, and the plate surface, edges and sides of the decorating plate are cleaned; a plurality of nail holes punched on the special steel belt are adopted in the invention, and a plurality of T-shaped hooks are punched along the steel belt; compared with the prior art, the labor intensity is reduced in the invention, the installation and the construction are simplified, meanwhile the attaching firmness of the heat-insulating plate onto the wall surface is enhanced, and the cost is reduced. The invention is suitable for the outer wall heat insulation construction of various residential and office buildings.

The invention provides a multimedia integrated digital classroom. All equipments required by traditional teaching and multimedia integrated digital teaching are integrated into a box body by adopting a rear protection system, so that external wiring is omitted and modification on the prior classroom is not needed, and the multimedia integrated digital classroom is more convenient in use and more humanized. The multimedia integrated digital classroom comprises a box body, a central control host, a rear projection system, a blackboard, a computer, a display table, a sound box and a microphone, wherein the central control host, the rear projection system, the blackboard, the computer, the display table, the sound box and the microphone are positioned in the box body; the rear projection system comprises a rear projection screen and a projector which is positioned below the rear projection screen; light emitted by the projector is protected to the rear projection screen; the blackboard is a writing board, and is positioned the middle position of the side wall of the box body parallel to the rear projection screen; the computer and the display table are connected with the projector respectively through the central control host; the information of the computer or the display table is projected onto the rear projection screen through the protector controlled by the central control host; and the sound box and the microphone are connected with the central control host respectively, and the playing of acoustic information and the transmission of speech are controlled by the central control host.

The invention provides a light steel assembly type composite wall board, a light steel framework, a manufacturing method and an installing method thereof. An outer side frame of the light steel framework uses M-shaped steel; the inside uses C-shaped steel; the outer side frame is connected by C-shaped connecting elements through tapping screws; the vertical and horizontal bearing force is obviously improved; the anti-shearing and load bearing effects are good; a sandwich heat simulation layer is filled into the light steel framework; the heat simulation and light steel framework deformation limitation effects are achieved; the outer maintenance plate is attached to the outer side of the light steel framework; a heat insulation layer is arranged between the outer maintenance plate and the light steel framework; the outer maintenance plate and the light steel framework are connected through tapping screws; the horizontal anti-shearing capability, anti-cracking and anti-impacting performance of the wall body are further improved; the factory wet operation is reduced; the cold and heat bridge influence is reduced; the wall board and the main board are fixed through turnbuckles and sleeves; the connection is simple and reliable. The forming components of the composite wall board have the advantages that the types are few; the dead weight is light; steel consumption is low; heat insulation and sound isolation effects are achieved; the assembled degree is high; the fast full prefabricated assembled construction can be realized; the cost is low; the light steel assembly type composite wall board is applicable to low and multi-storey building load bearing wall systems.

The invention relates to a measurement apparatus and a measurement apparatus for attitude of a self-walking underground tunneling robot, and belongs to the navigation positioning field during an underground tunneling process of a robot. A system comprises two emitters rotating at a certain angular speed and a plurality of receivers. A world coordinate system corresponding to a tunneling robot route is established through an electronic compass module and a leveling pedestal. The emitters emit three laser beams comprising one gated laser beam and two sector laser beams. Horizontal angles and pitching angles of the receivers relative to a horizontal plane of the two emitters are calculated by using geometrical relationships among the laser beams, rotational speed of the emitters, coordinate positions and time difference that the laser beams are received after the laser beams are received by the receivers. The measurement apparatus and measurement apparatus have the advantages of simple operations, low cost, convenience for maintenance and high positioning precision. Besides, the measurement apparatus and measurement apparatus not only can be used for the underground pose measurement but also can be used on the ground or for position and path measurement of spatial coordinates of a moving point.

The invention relates to a sewage bio-denitrification and sludge reduction coupling bioreactor and the process, pertaining to the sewage treatment field. Presently, 90 percent of sludge of China can not be effectively treated and disposed in due time, which results in secondary pollution. Moreover, the total nitrogen removal efficiency of a sewage treatment plant (particularly sewage with low carbon-nitrogen ratio) is poor as a whole. However, the carbon source discharged by reduction release of remained sludge can be acted as effective carbon source, thus enhancing denitrification effect while reducing the quantity of sludge. The invention is sequentially provided with an anoxic zone for nitration, an anoxic zone for wandering trapping sludge to lower the molecular weight and reduce the sludge quantity and provide carbon source for denitrification, and an aerobic zone SND (synchronous nitration and denitration action) for further denitrification, along the water direction in sequence, with a volume ratio of 23 percent: 45 percent: 32 percent, and each zone is grown with suitable microorganisms. The total nitrogen (TN) of the effluent is 10.2mg / L, and ammonia nitrogen is 1.9mg / L, COD is 31.2g / L, and the sludge yield is 0.068gMLSS / g COD. The invention has been applied for the treatment of residential domestic sewage.

A guiding device includes: a laser light source that emits a laser beam; and a linear guiding portion that propagates the laser beam and is extended in the guiding direction on a road surface on which a mobile body moves. The linear guiding portion is provided with a function of radiating the laser beam in the guiding direction from the surface where linear guiding portion extends, while propagating the laser beam, and guiding the mobile body by light.

The invention discloses an energy dissipating and shock absorbing system having a dense reinforcement structure, which comprises a concealed frame consisting of ending columns, connecting columns and a concealed beam. A floor slab is connected to the concealed beam horizontally, a part of the concealed frame is provided with dense reinforcement composite wall boards with low yield point, and the other part of the concealed frame is provided with light dense reinforcement composite wall boards filled with bricks. The invention provides another energy dissipating and shock absorbing system having a dense reinforcement structure, which comprises a concealed frame consisting of ending columns, connecting columns and a concealed beam, floor slabs are horizontally connected to the concealed beam, and dense reinforcement composite wall boards with low yield points are arranged in the concealed frame fully. Besides, the dense reinforcement composite wall boards with low yield points comprises multiple reinforced beams and reinforced columns which form rectangular grid structures, and steel plates with low yield point are embedded into the grids. The energy dissipating and shock absorbing system having the dense reinforcement structure is simple in structure, high in energy dissipation, stable in in energy dissipation performance and fine in shock absorption.

The invention discloses a device and method for in-situ remediation of fluoride-polluted soil, which can adopt a permeable reactive barrier in combination with an electrodynamics technology to performin-situ remediation on fluoride-polluted soil. The remediation method comprises the steps of performing physicochemical property measurement on soil, performing fluorine elution on the surface of thesoil using a soil eluent, laying an electrode capable of being repaired in situ, constructing an electrolyte continuous cycle loop between an electrolysis chamber and an electrolyte storage tank of the in situ electrode, and applying a direct-current electric field between the anode and cathode with a low-pressure pulsed power supply. Fluorinion carrying negative charge moves towards an anode chamber through electromigration under the action of the electric field and is adsorbed by a permeable reactive barrier in the anode chamber, meanwhile, fluorine, in the form of fluoride or other solubleions, moves towards a cathode chamber through electrodialysis and is adsorbed by a permeable reactive barrier in the cathode chamber, after the remediation is completed, the electrode is taken out, thereby completing the removal and remediation of fluorine pollutants in the soil.

The dispersed in-site ecological sewage purifying process belongs to the field of sewage treating technology. Pond in countryside used as sewage treating apparatus is separated with water separating barricading into a purifying stuffing zone and a purifying plant zone. In the purifying stuffing zone, bionic water weed stuffing is set; and in the purifying plant zone, submergent plant is planted. Under the guide of the barricading, sewage is made to pass through the purifying stuffing zone and the purifying plant zone successively, so that organic matters and trophic salts are eliminated. The treated water is returned with a reflux pump to aerate and raise the treating effects of purifying water, beautifying environment and preventing water eutrophication.

A construction method for a light tube non-prestress hollow floor system relates to the technical field of building construction. The method comprises procedures of foam composite plate manufacturing, template supporting and arranging and lower-layer stress rib binding, wire tube laying, reinforcing steel bar split head arranging, foam composite plate fixing, upper frame stud binding and concrete casting. The floor system is high in hollowness, and low in water absorption, and has superior heat insulation performance, and the construction method can lower floor system cost, facilitates subsequent ornament construction, and is comparatively suitable for two-way plates and prestress structures.

The invention relates to a rod type core bar bending restrain steel support which solves the problems of large difference of rigidity and stability of all directions of an energy dissipation section of the traditional bending restrain support, difficult support installation and complex restrain construction. A core main stress part comprises an energy dissipation section, conversion sections and an installation section, wherein the energy dissipation section is a solid steel bar or hollow steel pipe; an outer restrain steel part comprises a local restrain steel member and an integral restrainsteel member, the local restrain steel member comprises a core bar steel sleeve, the integral restrain steel member comprises a delay steel frame fixed outside the core bar steel sleeve and an auxiliary steel cylinder; one section of the two conversion section is in friction contact with the steel cylinder of the conversion section and a gap is remained between the core bar steel sleeve and the delay steel frame. The section of the energy dissipation section of the support has uniform size in all directions, which eliminates the difference of the rigidity and the stability of different directions, thus the local stable bearing capacity and the integral bending-preventing capacity are high, and the working reliability under large axial direction strain and strong shock is high; and the rodtype core bar bending restrain steel support is convenient for installation, and is suitable for engineering earthquake fortification and reinforcement.

The invention discloses a cover die for construction of a composite-section ribbed floor and a construction method thereof. The cover die comprises two cylinders or one cylinder and one box or two boxes, wherein each cylinder is of a cylindrical surrounding body structure of which the upper part and lower part are communicated; the cylinders comprise a cylinder I and / or a cylinder II; each box isof a cavity body structure of which one end is opened and the other end is sealed; the boxes comprise a box I and / or a box II; the cylinder I is sheathed above the exterior of the cylinder II, and / orthe box I is sheathed above the exterior of the cylinder II, and / or the box I is sheathed above the exterior of the box II; a lower flange die cavity of a cast-in-situ concrete rib is formed between the cylinder and / or the box; a web plate die cavity of a cast-in-situ concrete dense rib is formed between the adjacent cylinders and / or the boxes. One of the cover die is reserved in a reinforced concrete prefabricated rib cylinder or box, and the other one is a detachable and repeatedly used cylinder die, or is a prefabricated concrete cylinder reserved in the floor. The cover die is a construction die with the advantages that the production is simple; the construction is convenient; the construction period is short; the manufacturing cost is low; the good use effect is obtained.