39results about "Tread-and-riser units" patented technology

The utility model relates to the field of assembly type stairs, and discloses an assembly type stair structure device. The device comprises a base, a first supporting column, a handrail reinforcing rod, a rotating platform and a second supporting column, the lower end of the second supporting column is fixedly connected with the upper end of the base, and the rear side of the lower end of the rotating platform is fixedly connected with the upper end of the first supporting column; a movable pedal mechanism is arranged at the lower end of the handrail reinforcing rod; a pedal is arranged at the upper end of the movable pedal mechanism; the stair is moved through the lifting wheels, the universal wheels are driven to move upwards through the hydraulic rods after movement is completed, the stair is placed and supported through the base, the position of the limiting sliding block is adjusted through sliding of the limiting sliding block and the limiting rods, the limiting sliding block is fixed through the limiting threaded nails after adjustment, and therefore the pedals are adjusted; after adjustment, the baffles of different sizes are installed according to the height between the pedals, during installation, fixing is conducted through connection of threaded nails, threaded holes and second threaded holes, and therefore gaps between the pedals are protected.

The utility model discloses a prefabricated stairway convenient to install, which comprises a prefabricated stairway main body, an installation structure is arranged in the prefabricated stairway main body, the installation structure comprises an installation groove, a connecting floor slab and a fixing groove, the installation groove is horizontally arranged on one side of the top of the prefabricated stairway main body, and the connecting floor slab is arranged in the installation groove. The fixing grooves are formed in the upper surfaces of the bottoms of the prefabricated stair bodies, one ends of the connecting floor slabs are inserted into the mounting grooves, the other ends of the connecting floor slabs are clamped into the fixing grooves and flush with the tops of the prefabricated stair bodies, the two prefabricated stair bodies are connected through the two ends of the connecting floor slabs correspondingly, and the floor slabs are inserted into the mounting grooves and clamped into the fixing grooves. And a complete stair is formed to connect two layers.

The utility model relates to the technical field of assembly type building structures, in particular to an assembly type building component quick connecting structure which comprises a fixing base, a fence, a mounting main rod, a threaded sleeve and a mounting component, the fence is fixedly connected with the upper surface of the fixing base, the mounting main rod is fixedly connected with the inner wall of the fixing base, and the threaded sleeve is in threaded connection with the mounting main rod. The mounting assembly is arranged on the surface of the mounting main rod and comprises a fixing plate, the fixing plate is slidably connected with the surface of the mounting main rod, a mounting groove is formed in the upper surface of the fixing plate, a pedal is slidably connected to the inner wall of the mounting groove, a fixing block is fixedly connected to the upper surface of the fixing plate, and a through groove is formed in the surface of the fixing block; insertion rods are slidably connected to the inner walls of the through grooves and slidably connected with the inner walls of the pedals. According to the stair dismounting device, the mounting assembly is arranged, so that the stair can be conveniently and rapidly dismounted, the construction efficiency is improved, materials can be repeatedly used, and the practicability of equipment is effectively improved.

This utility model belongs to the field of landscape architecture and discloses a landscape greening step, installed on the main body of the steps. It includes an extension component, comprising an extension plate and columns, with a movable cavity between the columns, the extension plate, and the step wall. The movable component includes a movable plate that abuts against the ground or step surface and is movably disposed within the movable cavity, extending outwards. A planting box is detachably installed on the movable plate. Side panels are detachably installed between two columns. By adding the extension plate and columns, the original step body with cliffs on both sides can be extended by adding this component, allowing for the creation of a cavity that does not interfere with normal pedestrian movement without compromising the original structural strength. Landscape greenery can be placed within this cavity to enhance the step's aesthetics and greenery. This solution can thus modify an existing, constructed step body, improving its landscape greening effect.

The utility model discloses a seamless integrated step splicing structure used in a hundred-grade clean room in the technical field of clean room equipment, which comprises a ground decoration layer, a first stainless steel step support frame is arranged at the top of the ground decoration layer, an integrated stainless steel step is arranged at the top of the first stainless steel step support frame, and a second stainless steel step is arranged at the bottom of the integrated stainless steel step. A lap joint edge is arranged at one end of the integrated stainless steel step, a side integrated arc is arranged on the surface of the integrated stainless steel step, a side baffle is arranged on one side of the integrated stainless steel step, and a first PVC anti-slip strip is arranged at the top of the first stainless steel step supporting frame. Through the arrangement of a ground decoration layer, a first stainless steel step supporting frame, a lap joint edge, an integrated stainless steel step, a side integrated arc, a side baffle, a first PVC anti-slip strip and a second stainless steel step supporting frame, the seamless integrated step splicing structure clean room step integration function used in a hundred-level clean room is achieved, and the clean room step integration function cannot be easily cleaned; and the cleaning convenience of the seamless integrated step splicing structure used in the hundred-level cleaning chamber is improved.

The utility model discloses a modularization assembly type cross staircase, relates to building structure field, including platform beam, ladder column and cross support staircase structure, four groups of ladder column and platform beam are spliced together, the platform beam is respectively connected between two ladder column along the horizontal direction, the cross support staircase structure is connected with the ladder column along the horizontal direction, and the cross support staircase structure is connected with the cross support staircase structure through the cross support staircase structure. The cross supporting stair structure is connected between the two opposite platform beams, and one side of the cross supporting stair structure is close to an existing building structure, so that a continuous up-and-down walking channel is formed; the cross support stair structure comprises inclined stair beams, step plates and U-shaped connecting pieces, and the step plates are limited between the two opposite inclined stair beams. The stair columns are additionally arranged, so that the overall structure of the stair is separated from an existing building structure, and follow-up movement and disassembly are facilitated.

This invention relates to a prefabricated steel structure staircase and its assembly method, specifically within the technical field of prefabricated steel structure staircases. The invention addresses the problems of existing steel structure staircases, which require on-site welding, resulting in low construction efficiency, high labor costs, and cumbersome transportation due to their long length, necessitating the use of large hoisting equipment and incurring high operating costs. The invention comprises multi-layered stair column assemblies and multi-layered staircase assemblies. The multi-layered stair column assemblies are arranged sequentially from bottom to top along the outer end of the frame assembly. The stair column assemblies are fixed to the outer end of the frame assembly via TU snap-fit ​​nodes. Each layer of stair column assemblies is fixedly connected to one layer of staircase assembly. Each layer of staircase assembly includes a landing assembly, a lower stair flight assembly, and an upper stair flight assembly. The landing assembly is connected to the stair column assembly via TB or UT nodes. This invention is used for building connections.

The adjustable LED decorative step stair of the new type relates to a kind of adjustable LED decorative step stair, it includes several step units, each step unit includes steel plate support structure, expansion bolt, upper horizontal stone plate, lower horizontal stone plate, LED lamp groove assembly, inner side vertical stone plate and outer side vertical stone plate, steel plate support structure is fixed on the vertical face corresponding to building ladder wall by expansion bolt, upper horizontal stone plate is laid on the upper surface of overhanging portion of horizontal steel plate by stone adhesive, lower horizontal stone plate is adhered on the lower surface of overhanging portion of horizontal steel plate by stone adhesive, outer side vertical stone plate is adhered on the bottom edge of upper horizontal stone plate and outer end surface of horizontal steel plate, LED lamp groove assembly is arranged in the recess formed by lower horizontal stone plate, outer side vertical stone plate and horizontal steel plate. After using the above structure, the new type can ensure that the step height and width are strictly uniform, and significantly improve safety, decoration and construction efficiency.

This utility model relates to an assembled staircase, specifically in the field of precast concrete staircase technology. It includes staircase side beams, tread structures, and fasteners. The staircase side beams are installed on both sides of the tread structure using fasteners. The tread structure includes support beams, a starting tread, intermediate treads, and a top tread. Multiple intermediate treads are arranged between the starting tread and the top tread, and support beams are provided at the lower openings of both the starting tread and the top tread. This utility model uses two staircase side beams, support beams, a starting tread, intermediate treads, a top tread, and fasteners to form a complete staircase, facilitating installation and transportation and greatly improving convenience.

The utility model relates to an undisturbed soil step structure. The utility model is suitable for the technical field of outdoor steps. The technical problem to be solved by the application is to provide an undisturbed soil step structure. According to the technical scheme, the undisturbed soil step structure comprises an undisturbed soil step body, the front edge of a tread of the undisturbed soil step body is provided with a first convex part, the rear edge of the tread is provided with a clamping groove, and the undisturbed soil step body is arranged on the surface of a slope in a multi-stage mode; the wood-like cross rods are arranged between every two adjacent undisturbed soil step bodies, the bottoms of the wood-like cross rods are clamped in the clamping grooves of the undisturbed soil step bodies, and rectangular grooves capable of being matched with the first convex parts of the undisturbed soil step bodies are formed in the tops of the wood-like cross rods; and a second convex part capable of abutting against the top surface of the next-stage undisturbed soil step body is arranged on the surface of the wood-like cross rod.

The utility model relates to the technical field of steel structures, in particular to a steel structure stair which comprises a stair frame, a plurality of stair plates are installed on the stair frame, each stair plate comprises a horizontally-arranged step plate and a vertically-arranged head-on plate, and the step plates and the head-on plate are integrated. The step plate and the head-on plate form a structure with an external corner outside, the lower surface of the step plate and the lower surface of the head-on plate form an internal corner structure, a penetrating pipe penetrating through the two sides of the lower surface of the step plate is arranged below the step plate, the penetrating strip is installed in the penetrating pipe and penetrates through the penetrating pipe to be connected, and bolts are arranged at the two ends of the penetrating strip. Mounting holes are formed in the stair frame, the bolts penetrate through the mounting holes to be connected, and nuts are mounted on the bolts. The utility model has the advantages of simple installation, strong bearing capacity and difficult deformation.

The invention relates to the technical field of stairs, and particularly discloses a modular stair mounting structure which comprises edge beams, bending pieces, a tread surface layer and a kicking surface layer. The side beam is provided with a hook piece; the bending piece is formed by bending a mounting plate, a tread supporting plate and a kicking surface supporting plate in a triangular shape, and the mounting plate is connected with the hook piece in a hooking mode and further fixed to the edge beam through a fastener; the tread surface layer is arranged on the tread supporting plate, and the kick surface layer is arranged on the front side of the kick surface supporting plate. Rapid positioning and temporary supporting are achieved through the hooks, the final connection strength is guaranteed through bolt fastening, and the installation efficiency, precision and overall stability of the staircase are effectively improved. The structure is high in modularization degree, and standardized production and field assembly are facilitated.

The utility model relates to the technical field of prefabricated buildings, and discloses a prefabricated stair which comprises stair plates, an upper lapping table and a lower lapping table, two positioning holes distributed in a mirror image mode are formed in each of an upper connecting plate and a lower connecting plate, and three dovetail grooves arranged in a linear array mode are fixedly formed in one side of each of the upper connecting plate and the lower connecting plate; the upper ends of the two supporting plates are each fixedly connected with two positioning columns arranged in a mirror image distribution mode, and one side of the lower connecting plate and one side of the upper lapping table are each fixedly connected with three dovetail joints arranged in a linear array mode. According to the prefabricated stair and stair plate, through arrangement of connecting structures such as the positioning holes, the through holes, the dovetail grooves and the dovetail tenons, the connecting accuracy and reliability between stair modules are ensured, all components are tightly connected through the structures such as the positioning columns, the threaded columns and the dovetail tenons, the connecting strength is improved, and the connecting effect is good. And the overall structure of the stair is more stable.

The invention provides a steel structure stair ground washed stone structure which comprises a steel structure stair and washed stone composite layers, the steel structure stair comprises a kicking face and a tread, and the kicking face and the tread are each provided with the washed stone composite layer. The washed stone composite layer comprises an anti-rust paint layer, a cement-based interface agent layer, a washed stone layer and a washed stone finish-coat paint layer from bottom to top. On the other hand, the invention provides a construction method of the steel structure stair ground washing stone structure. The construction method mainly comprises the steps of base layer treatment, anti-rust primer brushing, interface agent brushing, dividing strip pasting, washing stone construction, dividing strip taking out, maintenance and finish-coat paint construction. Through the multi-layer composite structure design, a complete technical solution is constructed from the three dimensions of rust prevention, bonding and protection, the defects that a washed stone structure is prone to hollowing, delaminating, cracking, rusting and stone falling are effectively overcome, and the using effects that the steel structure stair washed stone is free of rusting, hollowing and falling, resistant to pollution and long in service life are achieved.

The application relates to the technical field of staircases, and particularly discloses a modular staircase mounting structure which comprises a side beam, a bent piece, a tread surface layer and a kick surface layer; the side beam is provided with a hooking piece; the bent piece is triangularly bent by an installation plate, a tread surface supporting plate and a kick surface supporting plate, the installation plate is hookingly connected with the hooking piece, and the installation plate is further fixed to the side beam through fasteners; the tread surface layer is arranged on the tread surface supporting plate, and the kick surface layer is arranged on the front side of the kick surface supporting plate. The application realizes quick positioning and temporary support through hooking, further guarantees the final connection strength through bolt fastening, and effectively improves the installation efficiency, precision and overall stability of the staircase. The structure has high modularization degree and is convenient for standardized production and on-site assembly.

The invention discloses a rack type lifting stage which comprises a stage plate, steps are fixedly connected to the two sides of the stage plate, a plurality of tooth columns are arranged on the two sides of the stage plate, mounting plates are mounted above the tooth columns, a plurality of first fixing rods are fixedly connected between the mounting plates, and bases are mounted above and below the tooth columns. A plurality of second fixing rods are fixedly connected between the bases, a rotating shaft is mounted on one side of the mounting plate, and a protection rod is fixedly connected to one side of the rotating shaft. By means of the structure, the trundles below the stage base can easily achieve overall movement, the position can be rapidly adjusted according to needs, the double-shaft motor is matched with the gearbox to accurately control the lifting speed and height of the stage plate, the telescopic rods and the anti-skid plates are arranged to be firmly fixed after the stage is in place, and the unfolded protection rods can prevent personnel from falling off; the steps are arranged on the two sides of the stage plate, so that the stage plate has multiple safety structures and convenience, and reliable guarantee is provided for stage operation and personnel safety.

A stair tread covering piece intended to be mounted on a step of a staircase composed of a plurality of steps separated by risers. It has a plate configuration comprising a main flat panel (1) intended to cover a step, said panel (1) being extended, along the long sides of the panel (1) oriented perpendicular to the line of travel, by two lateral panels (2, 3) with a perpendicular appearance to the main panel (1), an upper panel (2) and a lower panel (3).

The utility model discloses a wind power tower tube outer crawling ladder step positioning device, which relates to the technical field of wind power tower tube outer crawling ladders, and comprises two parallel support plates, a plurality of detachably connected steps are arranged between the two support plates, and each step comprises a horizontal plate and a vertical plate which are integrally connected. Magnetic metal inserting columns are symmetrically arranged on the side face, away from the vertical plate, of the horizontal plate, inserting holes matched with the magnetic metal inserting columns in structure are formed in the vertical plate, magnetic attraction buckles are arranged in the inserting holes, protruding blocks are arranged on the two end faces of the horizontal plate, grooves are formed in the opposite side faces of the two supporting plates, and the two supporting plates are arranged in the grooves. The grooves and the protruding blocks are arranged in a one-to-one correspondence mode. According to the positioning device for the outer crawling ladder step of the wind power tower tube, on the premise that it is guaranteed that the step is conveniently transported, the outer crawling ladder step and the supporting plate can be rapidly fixed, and the installation efficiency of the outer crawling ladder of the wind power tower tube is improved.

The utility model discloses an aluminum alloy spiral staircase with a quick assembly function, which relates to the technical field of spiral staircases, and comprises a stand column, and a plurality of pedal pieces are spirally arranged on the outer side of the stand column; a grating plate is arranged between every two adjacent pedal pieces; the outer side of the upper end of the grating plate is integrally provided with a clamping groove facilitating clamping and fixing of a lamp strip or a lamp strip. According to the utility model, the two pedals are connected through the grating plate; in this way, displacement of the adjacent pedal pieces can be prevented, and the overall structural stability is good. The lamp strip is arranged behind the grating plate, the lamp strip irradiates towards the inclined lower portion, and a light source penetrates through the grating plate and then is projected to the pedal piece. In this way, the dazzling function of the lamp strip is weakened, through shielding of the grating plate, the lighting effect can be guaranteed, people can easily distinguish the boundary of the pedal piece, and therefore the situation of step missing is avoided.

The invention discloses an improved fully-fabricated steel frame stair and a mounting method thereof, and the frame stair comprises a stair beam structure which is obliquely arranged along each stair and is erected on a main body structure at the upper end and the lower end of each stair; the fixing assembly is connected with the ladder beam structure; the pedal beams are correspondingly and detachably mounted at the corresponding positions of the inner sides of the ladder beam structures; the pedals are detachably mounted on the equal-height mounting surfaces of the two adjacent pedal beams respectively; the vertical plates are detachably installed on the two vertically adjacent pedal beams and / or detachably installed on the pedal beams at the ends of the main body structure; the lower parts of the guardrails are detachably mounted on the free sides of the ladder beam structures; and a wall connecting piece is further arranged on the stair beam structure of each stair. The building block is firm, attractive, high in adaptability and easy and fast to assemble, the construction period can be shortened, fast and efficient building construction is achieved, the overall project progress is accelerated, and safety and durability are ensured.

A stair tread covering designed to be mounted on a single step of a staircase composed of multiple steps separated by risers. It has a plate configuration comprising a main flat panel (1) intended to cover a step. This panel (1) is extended along its longer sides (1), oriented perpendicular to the line of travel, by two lateral panels (2, 3) perpendicular to the main panel (1): an upper panel (2) and a lower panel (3). See Fig. 1 in the abstract.

This application discloses a prefabricated staircase, relating to the technical field of building engineering, including a staircase middle section; an upper staircase section at the top of the middle section and a lower staircase section at the bottom; steps, with sliders positioned opposite each other on the side of the steps facing the middle section; a sliding groove on the side of the middle section facing the steps, with the sliders sliding within the groove in a one-to-one correspondence; limiting blocks on the opposite sidewalls of the sliders, and limiting grooves on the opposite sidewalls of the sliding groove, with the limiting blocks sliding within the limiting grooves; an upper receiving groove at the bottom of the upper staircase and a lower receiving groove at the bottom of the lower staircase, with a transmission groove on the sidewall of the sliding groove away from the groove opening; upper connecting holes in the upper and middle sections, and lower connecting holes in the lower and middle sections; a grouting hole at the top of the upper section, and an overflow outlet on the side of the sliding groove near the grouting hole closest to the upper section. This application facilitates the installation of the prefabricated staircase.

The utility model discloses an assembly type building stair, relates to assembly type building technical field, including skirting board and footboard, skirting board top is equipped with footboard, footboard both ends are equipped with a plurality of plug-in connection pole screw thread, footboard both upper surface and lower surface are fixedly equipped with a plurality of plug-in connection groove, the plurality of plug-in connection pole and the plurality of plug-in connection groove match, and the footboard is equipped with the footboard top. A first bolt is arranged on one side of the inserting groove in a threaded mode, and round holes are formed in the skirting board and the pedal. The skirting board and the footboard are combined and spliced through the multiple inserting columns and the multiple inserting grooves, in order to facilitate splicing, the inserting columns and the inserting grooves are fixed through the first bolts, the skirting board and the footboard are prevented from shaking, in order to prevent the skirting board and the footboard from slipping and falling down stairs in rainy and snowy days, the baffle is fixedly arranged on the surface of the footboard, and the skirting board and the footboard are conveniently spliced. The rubber pads are fixedly arranged on the outer sides of the baffles, friction force between the shoe soles and the pedals can be increased to prevent the shoes from falling down the stairs, and dirt on the shoe soles can be effectively cleaned.

This invention relates to the field of staircase technology, specifically a modular underwater maintenance staircase and its assembly method. The invention comprises a maintenance staircase consisting of at least two stair sections connected end-to-end. Both ends of the maintenance staircase are hinged to a structural wall via hinge seats. At adjacent ends of adjacent stair sections, a first hinge sleeve and a second hinge sleeve, coaxially penetrated by pins, are pre-embedded and fixed to form a hinge joint for the hinged floating of adjacent stair sections. Damping shafts are pre-embedded and fixed to the sidewalls at adjacent ends of adjacent stair sections. Each damping shaft has a first hook and a second hook that rotatably engage with each other to form a Jennings hook. The Jennings hooks are arranged in two sets symmetrically on both sides of the adjacent ends of adjacent stair sections. This invention improves construction efficiency, enhances adaptability to aquatic environments, improves structural safety, and reduces negative environmental impacts during construction and assembly.

The utility model belongs to the technical field of stair structures, and particularly relates to an assembling and installing assembly and an installing system for a three-dimensional suspended stair, and the assembling and installing assembly for the three-dimensional suspended stair comprises a side supporting unit, a horizontal supporting unit and a pedal unit, wherein the side supporting unit is obliquely erected between the upper platform and the lower platform, the horizontal supporting unit is inserted into the side supporting unit, and the pedal unit is horizontally clamped on the horizontal supporting unit; the side supporting units are arranged, the horizontal supporting units and the pedal units are installed, hidden supporting can be achieved on the two sides of the suspended stairway, the attractive effect of the suspended stairway is guaranteed, the connecting strength can be improved, meanwhile, the horizontal supporting units are connected with the side supporting units in an inserted mode, and the pedal units are clamped with the horizontal supporting units, so that the hidden supporting effect is achieved. Positioning and limiting can be conveniently carried out when the suspended staircase is installed, and the installation difficulty and the installation speed of the suspended staircase are improved.

The utility model provides an assembly type building prefabricated staircase which comprises a concrete staircase body, a staircase steel reinforcement framework is poured in the concrete staircase body, the upper end of the staircase steel reinforcement framework is fixedly connected with an upper metal platform, and the lower end of the staircase steel reinforcement framework is fixedly connected with a lower metal platform. The lower metal platform and the upper metal platform are both poured in the concrete stair body, assembling grooves are formed in the surfaces of the lower metal platform and the upper metal platform in a penetrating mode, and two end openings of the assembling grooves are exposed out of the upper face and the lower face of the concrete stair body. According to the overall arrangement, during assembly on a construction site, position deviation between the assembly groove and the connecting piece reserved in the building does not need to be worried, and assembly can be completed as long as the connecting piece reserved in the building is located in the range of the assembly groove, so that a certain fault-tolerant space is achieved during assembly and connection in the overall assembly process, and the assembly efficiency is improved. And meanwhile, the two sides of the concrete stair body collide during assembly, and the concrete stair body can be prevented from being damaged.

The present application relates to the technical field of fabricated building components, and discloses a high-efficiency fabricated building component, which solves the problem that the existing prefabricated stair component is inconvenient to move to the highest point of the stair plate when assembling the steps. The present application is characterized in that when the trapezoidal block moves to the joint of the upper triangular block and the lower triangular block, the extrusion force of the upper triangular block is reduced, the spring is reset to drive the telescopic rod to extend outward, the trapezoidal block is clamped in the gap between the upper triangular block and the lower triangular block, the upward movement of the trapezoidal block is limited, the bottom of the trapezoidal block is in contact with the bottom surface of the steel plate, the downward movement of the trapezoidal block is also limited, and the installation of the first layer of prefabricated steps is completed. Then, the staff repeats the above operation to install the second layer of prefabricated steps by stepping on the first layer of prefabricated steps, without climbing up and down the prefabricated stair plate, which is more convenient for installation and saves installation time.

The utility model relates to the technical field of prefabricated stairs, in particular to a hanging type prefabricated stair which comprises a stair steel structure frame, the inside of the stair steel structure frame is filled with a steel-concrete structure formed through pre-pouring, the stair steel structure frame is integrally formed through welding, and the stair steel structure frame comprises steel stair treads. A top plate part and a bottom plate part are horizontally arranged at the top and the bottom of the steel stair tread respectively, an inclined bearing bottom plate is arranged below the steel stair tread, and the inclined bearing bottom plate and the upper portion and the lower portion of the steel stair tread are integrally welded and formed through an upper rectangular hanging pipe part and a lower rectangular hanging pipe part respectively. The steel-concrete structure formed through pre-pouring is filled in the stair steel structure frame, the whole frame is integrally welded and formed, the bearing capacity of the stair is greatly improved through the combination mode, and the actual use requirement can be better met.

The utility model belongs to the technical field of steel structure stairs, and particularly relates to a plug-in type steel structure stair front safety skirting which comprises a supporting leg, supporting connecting structures are installed on the top and the front face of the supporting leg, a protection structure is installed in the middle of each supporting connecting structure, and a fixing structure is installed at the bottom of each protection structure. The protection structure comprises an inserting-connection anti-skid unit and a protection unit, the protection unit is installed on the front face of the inserting-connection anti-skid unit, the inserting-connection anti-skid unit comprises a step, limiting blocks are installed at the left end and the right end of the front face of the step, inserting plates are connected to the outer surfaces of the limiting blocks, and anti-skid plates are connected to the top ends of the inserting plates. According to the plug-in type front safety skirting for the steel structure stairs, through the arrangement of the protection structure, the plug-in connection of the plug-in plates and the limiting blocks and the abutting connection of the anti-skid plates and the top faces of the steps, gaps between the steps can be conveniently shielded, meanwhile, the steps are prevented from being frozen, and therefore the anti-skid effect is achieved.

The application relates to a prefabricated hollow beam type stair, and relates to the technical field of beam type stairs. The application comprises two oppositely arranged stair beams, the upper surface of the stair beam is provided with a folded plate step, a plurality of mounting rods are slidably connected in the stair beam, a plurality of mounting rods are slidably connected on the stair beam, a plurality of mounting holes for inserting the mounting rods are formed in the folded plate step, a positioning assembly is arranged on the mounting rod, a driving assembly is arranged in the stair beam, the driving assembly is connected with the mounting rod, the driving assembly is used for driving the mounting rod to be inserted into the mounting hole, the positioning assembly abuts against the folded plate step and is used for fixing the mounting rod on the folded plate step. The application has the effect that the folded plate step and the stair beam are more convenient to install.