1664 results about "Modular construction" patented technology

The invention provides a modular construction method of a low-code visual interaction system, and relates to the technical field of low-code development. The method comprises the following steps: constructing an edge cognitive topology network, packaging each node into a reconfigurable meta-module, analyzing a user operation track by using an intention perception interface to generate a meta-intention vector, and carrying out context correlation analysis through a semantic behavior chain to generate a potential behavior sequence. And establishing an asymmetric coupling relationship based on an implicit context mapper, forming a dynamic semantic resonance field, triggering distributed intention resonance and activating a matching element module, and generating a collaborative logic cluster under the constraint of edge computing node resources. And dynamically adjusting an interaction rule and a resource allocation strategy of the logic unit. According to the method, automatic construction and high-precision intention adaptation of complex business logic are realized, the elastic expansion capability and the real-time response efficiency of the system in an edge computing scene are improved, and the risk of logic fault and resource scrambling caused by node isomerism is reduced.

A hoisting posture control system and method, applicable to the technical field of modular construction. According to the hoisting posture control system, controllers corresponding to functional modules are called on the basis of data detected by sensors, to drive posture control of a hoisted object, thereby assisting a tower crane operator in making work decisions, so that the operator does not need to take risks to get close to a module to be installed hoisted in the air, ensuring the safety of workers and the accuracy and reliability of module installation. Thus, the labor cost in modular construction work can be reduced, and the assembly quality and efficiency of modules are improved.

The present invention relates to an adaptive manufacturing method for building components, particularly in prefabrication, modular construction, and panelized construction. The invention minimizes cumulative errors in building component production, enhances precision, and facilitates automated assembly using real-time digital updates. The method includes creating a digital information model of a building, containing data on the dimensions and positions of building components; manufacturing at least one building component based on initial model parameters; scanning the manufactured component using laser scanning, structured light scanning, or ultrasound-based scanning, selected based on the material properties, to generate a digital representation of its actual dimensions and shape; updating the digital model with the scanned data to dynamically adjust parameters for subsequent components; recalculating and adjusting the parameters of unmanufactured components based on detected deviations; transmitting adjusted parameters to an automated manufacturing system for real-time modifications in production. The system comprises a processor executing adaptive manufacturing instructions, a scanning module, a processing unit, and a recalculation module that updates component dimensions based on deviations, ensuring seamless integration of prefabricated elements.

A modular, multi-directional, smart electric vehicle (EV) charging station. In an embodiment, the EV charging station has a field-serviceable, replaceable modular construction, a fully multi-directional power routing architecture, buffered EV-to-grid and EV-to-EV charging, multi-EV charging capability, and the ability to integrate multiple modular charging stations into a networked local and / or wide-area charging system.

The invention discloses an active prediction type modular battery thermal management system, which comprises the following steps: a liquid path and electrical connection module, a data acquisition module, a communication transmission module, a working condition identification module, a feedback control module, a cooperative control module, an execution adjustment module, a state feedback module, an exception handling module, a redundancy switching module and the like. A prediction control instruction is generated by combining a working condition recognition result, a fusion control quantity is formed by the prediction control instruction and temperature feedback, amplitude limiting control is conducted according to thermal power evaluation and a set threshold value, coordinated adjustment of a pump, a valve and a bypass assembly is achieved, and if recognition fails or data is abnormal, the system automatically freezes prediction control and executes closed-loop adjustment only depending on feedback. And the standby device takes over the fault after fault judgment, so that continuous operation and safety maintenance of the system are guaranteed. The system has a modular structure and complete maintenance process support.

The invention discloses a computer network experiment environment dynamic construction method based on virtual simulation, which belongs to the field of computer network experiment teaching and virtual simulation technology application, and comprises the following steps: analyzing experiment scene description to generate a modular construction instruction; creating and initializing a virtual machine instance and a basic network; generating a required virtual network device and constructing a corresponding virtual connection; configuration parameters, service scripts and security policies are comprehensively applied to the virtual machine and the network equipment; and integrally outputting the experimental environment to a user interaction interface. According to the method, the demand-driven instruction arrangement, virtual resource pooling scheduling and multi-layer automatic configuration technologies are adopted, so that a diversified and deeply interactive virtual computer network experiment environment can be quickly and flexibly constructed according to specific experiment demands of a user; and the resource utilization rate, the scene construction efficiency and the flexibility of the teaching mode of network experiment teaching are obviously improved.

The invention belongs to the field of overvoltage protection, and relates to an overvoltage stabilizing and protecting device which comprises a data acquisition operation module, a control logic module, a display module, an overvoltage protecting assembly and a high-voltage vacuum circuit breaker or an electric isolation handcart structure. The real-time monitoring and protection of the working state of the overvoltage protection assembly are realized; through the arrangement of the high-voltage circuit breaker or the electric isolation handcart, when the overvoltage protection assembly is detected to be abnormal, the connection between the overvoltage protection assembly and the high-voltage bus can be rapidly cut off, so that the system safety is ensured; the device integrates a transient fault recording function and can capture wave map data before and after a power frequency overvoltage fault of the system; the overvoltage protection assembly in the device adopts a geometric center air cooling heat dissipation mode, the fan is quick in starting response, the operating temperature of the overvoltage protection assembly is greatly reduced, the operating time of the overvoltage protection assembly can be effectively prolonged, and the device adopts an integrated modular structural design, so that the operation safety, the maintenance and the management are greatly facilitated.

The invention discloses a ship block modular design construction precision control method and device, and relates to the technical field of ship construction, and the method comprises the steps: building a size chain relation of all parts in a preset module according to ship block modular construction standard data; establishing a three-dimensional assembly model of the preset module based on the dimension chain relationship, and establishing a three-dimensional assembly deviation analysis model according to the three-dimensional assembly model; solving a closed ring out-of-tolerance rate and a composition ring influence weight according to the three-dimensional assembly deviation analysis model; determining whether a simulation result meets a preset requirement or not according to the closed ring out-of-tolerance rate and the component ring influence weight; when the simulation result meets a preset requirement, establishing an out-of-tolerance rate comprehensive evaluation model according to the simulation result; the influence coefficient of each composition ring on the overall out-of-tolerance rate is solved according to the out-of-tolerance rate comprehensive evaluation model; and determining a construction precision control scheme according to the influence coefficient, and performing ship block modular construction precision control according to the construction precision control scheme.

The invention discloses a buoy structure and a foundation structure suitable for a floating type wind turbine generator foundation, and the buoy structure comprises a distributed steel pipe frame which comprises a central steel pipe and peripheral steel pipes arranged around the central steel pipe; the end deck comprises an upper end deck and a lower end deck which are connected with the two ends of the distributed steel pipe frame respectively; the buoyancy module is made of glass fiber reinforced plastics and is formed by connecting a plurality of buoyancy units with a central steel pipe and a peripheral steel pipe in a layered manner, and each buoyancy unit is of a hollow watertight box body structure and is filled with a water pressure load or a solid pressure load; each buoyancy unit comprises a connecting pin connected with the central steel pipe, a through hole allowing the peripheral steel pipe to penetrate through and a skirt plate used for being connected with the adjacent buoyancy unit or the end deck, the connecting pins are arranged on the inner sides of the buoyancy units, the skirt plates are arranged on the outer sides of the buoyancy units, and connecting holes are formed in the skirt plates. The manufacturing and maintenance cost is effectively reduced, meanwhile, modular construction can be achieved, and the construction period is greatly shortened.

A building panel for modular construction. The building panel utilises less framework for reduced complexity, materials and weight. The panel utilises features of the formwork to allow the panel to be moved easily. The panel further utilises new formwork moulds that are easier to use and create effective patterns for keying with like panels.

The present invention provides a two-in and two-out DC 1500V disconnect switch, comprising: two contact modules, arranged side by side with the operation module, and multiple modules are assembled by fasteners. The contact module includes a contact module body and a contact assembly arranged inside the contact module body; an operation module, provided with a manual operation mechanism and an electric operation mechanism for controlling the opening or closing of the contact module. In this way, modularization is achieved, the structure is simple, and the assembly is fast and convenient. Moreover, the operation module is provided with a manual operation mechanism and an electric operation mechanism for controlling the opening or closing of the contact module, that is, the opening or closing can be realized manually and electrically, which is beneficial to people's operation.

The invention relates to the technical field of assembly type wall bodies, and provides an assembly type building detachable wall body which comprises two erecting frames which are arranged in a mirror image mode and serve as a containing area for the assembly type building to place the wall body. The number of the main end bases is two, auxiliary end bases are slidably connected to the front sides and the rear sides of the main end bases correspondingly, a plurality of wallboards are connected to the sides, close to each other, of the auxiliary end base at the top end and the auxiliary end base at the bottom end through traction ropes, and the wallboards are spliced into a wall surface; and side plates are fixedly connected to the left end and the right end of the top side of the main end base at the bottom end. The wall body can be folded and stored in an unassembled state, the size is obviously reduced, the occupied space is greatly reduced, the wall body is more convenient to transport and store through the design, the transport efficiency is improved, meanwhile, the transport and storage cost is reduced, and the wall body is particularly suitable for the modular construction requirement of an assembled building.

The utility model belongs to the technical field of glass fiber production equipment, and particularly relates to a novel sleeve-connection-method wire drawing machine head of a modular structure. The device comprises a machine head main shaft, an upper wire ring, a pull rod seat, a broken bridge type expansion sheet, an on-shaft aluminum rotary drum and a plurality of sections of sleeved aluminum rotary drums, telescopic mechanism installation positions are arranged between the upper wire ring and the sleeved connection type aluminum rotary drum, between the pull rod seat and the on-shaft aluminum rotary drum, between the on-shaft aluminum rotary drum and the sleeved connection type aluminum rotary drum and between every two adjacent sleeved connection type aluminum rotary drums, and expansion piece telescopic mechanisms are arranged in the telescopic mechanism installation positions. And the broken bridge type expansion sheets are connected to the on-shaft aluminum rotary drum and the sleeve type aluminum rotary drum in a clamping and embedding manner. According to the novel sleeve connection method wire drawing machine head with the modular structure, the technical problems that the machining difficulty of a super-long aluminum rotary drum and an expansion piece is large, the machining quality cannot be guaranteed, and disassembly and assembly are difficult during assembly and maintenance are solved; and meanwhile, the control precision and efficiency are improved, and the power consumption of the wire drawing machine is reduced.

The invention relates to the technical field of slope reinforcement, and discloses an anchoring device for preventing landslide geological disasters, the anchoring device is arranged on a slope surface, distributed in a grid shape and formed by splicing a plurality of anchoring units, each anchoring unit comprises an anchor rod support and four frames, the four frames are evenly distributed on the periphery of the anchor rod support, and the anchor rod support is arranged on the periphery of the anchor rod support. The anchor rod support is detachably connected with the frame; a center hole is formed in the anchor rod support, and an anchor rod inserted into a slope body is installed at the center hole. Every two adjacent frames are connected through a set of reinforcing mechanisms. The modular structural design is adopted, specifically, the detachable anchor rod supports and the frame are combined, the weight of a single node is small, carrying is convenient, manual carrying and rapid splicing are facilitated, a latticed splicing system formed by the scheme can adapt to terrains with different slopes, and the construction efficiency can be effectively improved.

The invention relates to the technical field of flat car bearing, in particular to a flat car grid-shaped anti-skid platform structure which is of a modular structure, each modular anti-skid platform structure comprises a frame and a grid-shaped supporting component, the grid-shaped supporting components are arranged in the frames to form a plurality of supporting inner grids, and the grid-shaped supporting inner grids are arranged in the frame. The anti-skid components are arranged in the supporting inner grids; the anti-skid component is made of a deformation material, and the upper surface of the anti-skid component is higher than the upper surface of the grid-shaped supporting component, so that the anti-skid component wraps crawler teeth of crawler-type equipment borne by the platform; the grid-shaped supporting component is made of a rigid material so as to form rigid supporting limiting on the crawler teeth and limit the cutting degree of the crawler teeth to the anti-skid component. The platform has the advantages that the platform is antiskid and durable, the lightweight process is realized, the load of the platform is uniform, the service life is long, transverse sliding is effectively resisted, the maintenance cost is low, the modular design supports local replacement, the antiskid material is durable and low in cost, and the long-term maintenance expenditure is reduced.

The invention discloses a bridge deck system multi-sub-project integrated construction process optimization method. The method comprises the following steps: step 1, optimizing a process based on a BIM (Building Information Modeling); step 2, carrying out combined measurement by adopting GNSS-RTK and laser scanning; 3, bridge deck pavement construction and expansion joint installation are conducted on the basis of the combined measurement result; 4, the paver is linked with the reserved groove for positioning, the flatness error can be effectively controlled, and the bridge deck pavement quality is guaranteed; 5, guardrail modular construction is carried out; sixthly, seamless connection, layered backfilling and dynamic compaction are conducted on the butt strap behind the abutment; 7, whole-process environmental protection and finished product protection; 8, performing three-dimensional scanning comparison; step 9, block chain data archiving; the method has the beneficial effects that construction simulation, sequence adjustment and dynamic monitoring are carried out based on the model optimization process logic, the problems of process crossing and construction period conflict can be recognized and eliminated by simulating the construction process in advance, accurate positioning of each subentry project is ensured, and the overall coordination of construction is improved.

The invention discloses a multi-energy coordination and monitoring platform for offshore oil and gas development, which relates to the technical field of multi-energy coordination and comprises a floating platform main body, and a solar power generation array (1), a sub power generation system (2), a main power generation system (3) and a water turbine cross beam (4) which are positioned on the floating platform main body, the floating platform main body adopts a hexagonal modular structure; the solar power generation array (1) comprises a plurality of monocrystalline silicon photovoltaic panels which are uniformly distributed on the floating platform main body; the sub power generation systems (2) are positioned at six vertexes of the floating platform main body; the main power generation system (3) is located in the center of the floating type platform body. And the water turbine cross beams (4) are uniformly distributed on the periphery of the floating platform main body. By comprehensively utilizing renewable energy sources such as solar energy, wind energy, wave energy and ocean current energy, stable and sustainable energy supply can be provided for the offshore oil and gas platform, and various pain points of a traditional energy supply mode are overcome.

To provide a wiring structure for a hub motor in which wiring connection parts are formed into a modular structure, assembly strength and alignment precision are improved, and assembly can be made easier during installation. [Solution] The wiring structure for a hub motor comprises a hub motor and a wiring unit 10, the wiring unit having a motor connection section 20 and a wire connection section 30, with a load terminal wiring board 25 of the motor connection section and a power supply end wiring board 36 of the wire connection section interconnected by a plurality of bridge connecting rods 24 to form a modular structure. This effectively improves assembly strength and alignment accuracy, makes assembly easier during installation, and more effectively increases safety in use while reducing the overall volume of the wiring unit.

The invention discloses a hot melting forming device and method for a synthetic quartz glass cylinder, through modular structural design, the synergistic effect of positioning, exhausting, pressing and forming is achieved, and the hot melting forming device for the synthetic quartz glass cylinder specifically comprises a graphite pressure head connecting rod, a graphite pressure head, a graphite center rod and a forming mold. According to the hot-melting forming method for the synthetic quartz glass cylinder, the device is adopted, a synthetic quartz glass ingot is pretreated, a low-impurity demolding material is laid during assembling, gradient heating is conducted on three temperature areas of a heating furnace, pressurization is conducted after softening, and then differential cooling is conducted, so that efficient preparation of the high-purity synthetic quartz glass cylinder is achieved; and the purity of the finished product meets the strict requirements of high-precision processes such as semiconductor wafer processing and thin film deposition on the material purity. According to the invention, the large-diameter and ultra-long synthetic quartz glass cylinder can be stably produced, the requirement of large-size development of semiconductor equipment is met, and the blank in the field of large-size high-purity quartz glass cylinder preparation in the prior art is filled.

The invention relates to the technical field of hot stamping equipment, and discloses a digital plane and curved surface dual-purpose image-text hot stamping machine system for the surface of a cylindrical product, which comprises a modular structural design, a dual-mode positioning system and a digital control unit, the self-adaptive hot stamping head adopts a flexible stamping module driven by air pressure and hydraulic pressure, and the dual-mode positioning system comprises a plane mode and a curved surface mode. According to the hot stamping machine system, a self-adaptive hot stamping head adopts a pneumatic / hydraulic driven flexible stamping module, a pressure sensor array is arranged in the self-adaptive hot stamping head to adjust local pressure in real time, a dual-mode positioning system is adopted, a vacuum adsorption platform is adopted in a plane mode, a curved-surface mode programmable rotary clamp is adopted, 0-300 rpm stepless speed regulation is supported, a dual-mode hot stamping mechanism is initiated, and the self-adaptive hot stamping head is applied to the hot stamping machine system. The plane / curved surface mode is switched within 10 seconds through the quick-change interface, the hot stamping track is adjusted in real time based on workpiece three-dimensional scanning data, and the waste film recovery rate is increased to 95% or above through the environment-friendly hot stamping film recovery system.

The invention discloses a modular five-degree-of-freedom magnetic suspension compressor rotor system and a control method, and belongs to the field of compressor rotors, the modular five-degree-of-freedom magnetic suspension compressor rotor system comprises a magnetic suspension rotor main shaft and a driving motor arranged in the middle of the magnetic suspension rotor main shaft, and a centrifugal impeller and a cooling impeller are installed at the two ends of the magnetic suspension rotor main shaft correspondingly; the magnetic suspension rotor main shaft between the driving motor and the centrifugal impeller and the magnetic suspension rotor main shaft between the driving motor and the cooling impeller are respectively and sequentially provided with an axial magnetic bearing assembly and a radial magnetic bearing assembly; the axial magnetic bearing assembly is of a non-thrust disc structure in which a magnetic field is directly coupled; the radial magnetic bearing assembly is of a modular structure with partitioned magnetic poles. According to the modularized five-degree-of-freedom magnetic suspension compressor rotor system and the control method, the axial magnetic bearing assembly directly coupled with the magnetic field is adopted, a thrust disc is omitted, the assembly process of the axial magnetic bearing is simplified, meanwhile, the partitioned magnetic poles are adopted, redundancy control is achieved, and stability is higher.

The invention relates to a modular construction platform impact holing super-long in-water pile foundation and a construction method thereof. According to the system, through modular design, the construction platform is decomposed into a plurality of modules which can be independently manufactured, transported and installed, and the flexibility and adaptability of construction are improved. By adopting the multi-point joint control technology of the shaped double-layer profile steel guide frame and the jack, the accurate sinking of the steel casing is realized, and the construction efficiency and precision are improved. The steel box-launder efficient circulating slurry system ensures cyclic utilization and real-time adjustment of slurry, and guarantees safety and stability of drilling operation. The construction method comprises the steps of steel trestle construction, modular temporary platform building, steel casing installation, ultra-long underwater pile foundation impact hole forming modular construction platform construction, slurry system construction, pile foundation hole forming construction and the like. The construction problem under the complex coastal environment is effectively solved, and remarkable technical economic and social benefits are achieved.

A stator structure of a magnetic levitation flux-switching motor includes a stator of a modular structure and a motor housing. A modular stator includes front and rear side winding end heat dissipation modules, modular stator left and right wings, a modular stator permanent magnet, front side magnetic conduction column left and right wings, an inter-front side and inter-rear side magnetic conduction column permanent magnets, insulating layers, a stator winding, and rear side magnetic conduction column right and left wings. The front side and rear side winding end heat dissipation modules are of hollow structures, and are symmetrically provided with a cooling medium inlet and a cooling medium outlet, a cooling medium channel is disposed inside a hollow cavity, one side of the heat dissipation module is a smooth curved surface, and good thermal contact can be achieved between the heat dissipation module and the stator winding and the insulating layer.

The invention discloses a test device and a test method for a vibration and dislocation double-input lower span tilting-sliding fault tunnel. The test device comprises a test box body, a hydraulic actuator, a loading unit, a covering layer soil body, a tunnel physical model and a sensor monitoring system, wherein the test box body consists of a movable steel plate and a fixed steel plate; the loading unit consists of an angle adjusting module and a hydraulic control system; a bed rock model, a covering layer soil body and a tunnel model are arranged through a modular construction method, and data are collected in real time through soil pressure, microseismic and strain sensors and displacement meters. According to the invention, the failure mechanism of the cross-fault tunnel under the coupling action of bed rock dislocation and pulse seismic oscillation can be accurately simulated, the damage rule of the combined action of fault dislocation and seismic waves to the tunnel structure is revealed by qualitatively and quantitatively analyzing the strain, displacement, soil pressure and seismic oscillation response of the tunnel, and a test basis is provided for the aseismic design of the cross-fault tunnel.

The utility model belongs to the technical field of glass fiber production, and particularly relates to a novel multi-drawing wire drawing machine head with a modular structure. The machine head comprises a machine head main shaft, an upper wire ring, a pull rod seat, a broken bridge type expansion sheet and a plurality of sections of sectional type aluminum rotary drums, expansion piece telescopic mechanisms are arranged between the upper wire ring and the sectional type aluminum rotary drum, between the sectional type aluminum rotary drum and the pull rod base and between every two adjacent sections of sectional type aluminum rotary drums. The expansion piece telescopic mechanism comprises a piston ring, a slope sliding block ring, a connecting rod sliding block, a connecting rod, a sliding block ring top spring, a sliding block tension spring and an expansion piece tension spring. According to the novel multi-split wire drawing machine head with the modular structure, the technical problems that the machining difficulty of an ultra-long aluminum rotary drum and an ultra-long expansion sheet is large, the machining quality cannot be guaranteed, and disassembly and assembly are difficult during assembly and maintenance are solved; and meanwhile, the control precision and the expansion piece stretching efficiency are improved, and the power consumption of the wire drawing machine is reduced.

A system and method for reconfiguring physical space having structural integrity, notably empowered by leveraging energy distribution that further leverages dynamic feedforward allocation of distributed energy storage, to maximize space utilization factor to accelerate return on investment, reduce system energy consumption, and maximize functional utilization of physical space particularly suited for modular construction with integral and approximately continuous updating of digital twin modeling to empower higher precision feedforward and feedback systems control resulting in high-performance buildings.

According to the carbon dioxide concentration detection device based on optical fiber sensing and the storage monitoring system provided by the invention, the first optical fiber sensing unit with a modular structure is designed, so that the contact part of the sensitive coating and the optical fiber Bragg grating can be independently maintained and replaced, and the optical fiber reflection wavelength drift caused by the CO2 concentration change in the environment can be accurately detected. Meanwhile, a fiber bragg grating which is not covered with a CO2 sensitive coating is arranged as a reference, and wavelength drift mainly generated by environmental interference factors is detected. The influence of environmental interference factors on the wavelength drift of the CO2 optical fiber sensor can be eliminated by calculating the wavelength drift distance of the two fiber bragg gratings and combining the mathematical model of the wavelength drift distance and the CO2 concentration, and then the accurate CO2 concentration value is obtained. According to the invention, high-efficiency real-time monitoring of CO2 concentration in the geological storage process of CO2 is realized, and data accuracy and reliability are ensured. Moreover, the modular design facilitates the regular inspection and replacement of the sensor, prolongs the service life, reduces the maintenance cost, and is high in sensitivity, strong in stability, and good in maintainability.

A modular construction housing system includes fiber-reinforced wall panels, such as fiberglass wall panels, attached to a roof component via one or more pins extending downwardly from the roof component into an internal cavity of the wall panels. The wall panels and the flooring of the modular construction housing system are integrally formed via molding to reduce the number of separate components and the amount of construction and connection required on-site. The wall panels include a plurality of internal conduits extending through the internal cavity of the wall panels configured to align with internal conduits extending downward from the roof component to allow for electrical wiring and other function to seamlessly extend from the wall to the roof.

A modular construction system light matrix comprising a housing having side walls, an end wall and a front edge encircling a front opening of said housing. The light matrix has an array of light emitting elements. The light matrix has a compartment grid, arranged in said housing and having compartment grid walls extending towards said front opening of the housing, one compartment for each light emitting element. The light matrix has a light diffusing element arranged at said opening of the housing having a plurality of diffuser tiles, each diffuser tile covering a compartment of the compartment grid. The diffusing element comprises a diffuser grid providing a barrier between mutually facing sidewalls of the diffuser tiles. The diffuser grid is formed in a different material from the diffuser tiles. A lower side of the diffuser grid adapted to abut an upper side of the compartment grid.

The invention discloses an assembly type building stair mold, and relates to the technical field of stair molds, the assembly type building stair mold comprises a mold mechanism, the side face of the mold mechanism is provided with a transverse steel bar limiting mechanism, and the transverse steel bar limiting mechanism is used for limiting and fixing transverse steel bars in a prefabricated stair. According to the longitudinal reinforcement limiting mechanism, the height of a clamping head is accurately adjusted through a third mounting bolt, the clamping head can be flexibly selected according to the diameter of a longitudinal reinforcement, the mounting height and position of the longitudinal reinforcement can be accurately controlled, the overall positioning accuracy of a reinforcement framework is guaranteed, and then the mechanical property of the prefabricated stair is improved; the sleeve plays a role in protecting the end, inserted into the mold mechanism, of the third mounting bolt, it is avoided that concrete adhesion affects bolt disassembly, meanwhile, due to the detachable design of the third mounting bolt and the modular structure of the steel bar limiting mechanism, the demolding difficulty is lowered, damage to stairs after a component is formed is reduced, and the demolding efficiency and the finished product quality are improved.