Novel assembly type folded plate beam type stair

Abstract

The invention discloses a novel assembly type folded plate beam type stair, which belongs to the technical field of assembly type buildings, and comprises a plurality of L-shaped step plates and two mounting platforms, two stair beams used for laying the step plates are arranged between the two mounting platforms, mounting grooves are formed in the mounting platforms, and the step plates are arranged in the mounting grooves. Circular grooves are formed in the two sides of the bottom of the mounting groove, guide rails are horizontally arranged in the circular grooves, vertically-arranged supporting shafts are coaxially and rotationally connected into the circular grooves, and the top ends of the supporting shafts are connected with the middles of the corresponding guide rails; the bottoms of the two ends of the ladder beams are detachably connected with mounting pieces, sliding seats are arranged at the bottoms of the mounting pieces, the sliding seats are slidably connected with the corresponding guide rails, a plurality of grooves are formed in the two sides of each guide rail, clamping blocks with arc-shaped ends are slidably arranged in the grooves, and elastic supporting pieces are arranged between the clamping blocks and the grooves; the problem that the anti-seismic property of an assembly type stair is low is solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of prefabricated buildings, and particularly relates to a novel prefabricated folded plate beam type stair. BACKGROUND

[0002] At present, the core contradiction that plagues the development of prefabricated stairs is the mismatch between the self-weight of components and the lifting capacity of construction machinery. At present, due to the structural design and material limitations, the weight of single components of prefabricated stairs is generally large, and most domestic construction enterprises still mainly use cast-in-place construction system. The hoisting equipment such as tower crane equipped by them is mainly designed for cast-in-place concrete components, and the remote hoisting capacity is difficult to meet the precise hoisting needs of prefabricated stairs. While the scheme of increasing component types, reducing the weight of each component and reducing the demand for hoisting capacity, the seismic performance of prefabricated stairs under this scheme will decrease. SUMMARY

[0003] Therefore, the present application discloses a novel prefabricated folded plate beam type stair, which aims to solve the problem of low seismic performance of prefabricated stairs.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A novel prefabricated folded plate beam type stair, comprising a plurality of L-shaped step plates and two installation platforms, two ladder beams for laying step plates are arranged between the two installation platforms, the installation platforms are each provided with an installation groove, the bottom of the installation groove is provided with a circular groove on both sides, the circular groove is provided with a guide rail horizontally, a vertically arranged support shaft is coaxially connected in the circular groove, and the top end of the support shaft is connected with the middle part of the corresponding guide rail; the bottom of the two ends of the ladder beam is detachably connected with an installation piece, the bottom of the installation piece is provided with a sliding seat, the sliding seat is slidably connected with the corresponding guide rail, a plurality of recesses are formed on both sides of the guide rail, an arc-shaped clamping block is slidably arranged in each recess, and an elastic support piece is arranged between the clamping block and the recess.

[0006] In the scheme, two ladder beams are installed on the installation platform, and the mounting pieces are connected and fixed with the ladder beams, then the step plates are hoisted and connected and fixed with the ladder beams; in normal state, the corresponding clamping blocks clamp and limit the two sides of the sliding seat; when the earthquake occurs, the ladder beams are relatively moved with the installation platform under the influence of the earthquake transverse wave, the ladder beams drive the sliding seat to move relatively to the guide rail through the connecting pieces, the sliding seat drives the guide rail to rotate, so that the guide rail moves to the moving direction of the ladder beam; when the sliding seat slides, the arc-shaped end surface of the clamping block is extruded to slide into the groove, and the clamping block extrudes the elastic supporting piece to play a certain energy dissipation effect. In the scheme, through the cooperation of the guide rail and the sliding seat, the ladder beam can slide a distance relative to the installation platform and dissipate energy when the earthquake occurs, the shear force at the connection between the ladder beam and the installation platform is dissipated, and the shear force at the connection between the ladder beam and the installation platform is prevented from being too large to break.

[0007] Further, the upper surface of the ladder beam is provided with a plurality of accommodating grooves, and a support cylinder is detachably connected in the accommodating grooves. A plurality of vertical guide grooves are formed in the inner wall of the support cylinder, and a sliding member is slidably connected in the guide grooves. Hydraulic cavities are formed in both ends of the guide grooves and communicate with the guide grooves. Damping liquid is arranged in the hydraulic cavities. Hydraulic plates are fixed at both ends of the sliding member and slidably connected with the hydraulic cavities. Elastic return members are arranged between the hydraulic plates and the hydraulic cavities. A connecting shaft is coaxially arranged in the support cylinder. A connecting rod is hingedly connected between the connecting shaft and the corresponding sliding member. The connecting shaft is fixed with a connecting piece at the top end. A plurality of mounting seats are pre-buried in the bottom of the step plate and detachably connected with the corresponding connecting pieces.

[0008] In the scheme, when the step plate moves relative to the ladder beam under the action of the earthquake wave, the step plate drives the connecting shaft to move synchronously, the connecting shaft drives the sliding member to move relative to the support cylinder through the connecting rod, and the sliding member drives the hydraulic plate to extrude the damping liquid in the guide groove to dissipate energy and reduce the movement of the step plate relative to the ladder beam. In the scheme, through the cooperation of the support cylinder and the connecting shaft, the step plate and the two ladder beams can slide relative to each other when subjected to the action of the earthquake, the shear force at the connection between the step plate and the ladder beam is dissipated, and the shear force at the connection between the step plate and the ladder beam is prevented from being too large to break.

[0009] Further, the mounting piece comprises a positioning cylinder body fixedly connected with the sliding seat. The positioning cylinder body is internally provided with damping liquid. The positioning cylinder body is coaxially slidably provided with a fixed rod. The top end of the fixed rod is detachably connected with the ladder beam. The fixed rod is coaxially rotatably connected with an annular plate. A plurality of circularly arrayed pressure plates are vertically arranged at the lower end of the annular plate. A plurality of helical grooves are arranged in the positioning cylinder body. The annular plate is provided with guide blocks which extend into the helical grooves and are slidably connected therewith.

[0010] When the ladder beam slides relative to the installation platform in the longitudinal direction under the influence of the earthquake, the ladder beam drives the annular plate to move vertically relative to the positioning cylinder through the fixing rod, and the annular plate extrudes the damping liquid to perform the first energy dissipation, and meanwhile, the annular plate is horizontally rotated through the cooperation of the guide block and the spiral groove, and the annular plate drives the pressure plate to rotate synchronously and extrude the damping liquid, thereby assisting the energy dissipation. In the present scheme, the energy is dissipated synchronously through two ways, so that the movement of the ladder beam in the longitudinal direction under the influence of the earthquake is reduced, and the connection between the ladder beam and the installation platform is prevented from being damaged.

[0011] Further, the sliding grooves are formed in the side walls of the installation grooves and face the ladder beam, the U-shaped abutting plates are slidably connected in the sliding grooves, the lower ends of the abutting plates abut against the step plates, gaps are reserved between the abutting plates and the end portions of the sliding grooves, and the elastic return members are arranged between the abutting plates and the sliding grooves.

[0012] Further, the circular grooves are coaxially arranged in the bottoms of the circular grooves, and the positioning seats are slidably connected in the circular grooves.

[0013] Further, the rubber members are arranged on the abutting plates and fill the installation grooves and the step plates.

[0014] Further, the installation seats are exposed to the step plates at the top ends, and the installation holes are arranged in the upper ends of the installation seats.

[0015] Other advantages, objects, and features of the present application will become apparent from the following specification, and are in part, set forth in the claims. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to make the objectives, technical solutions and beneficial effects of the present application clearer, the present application provides the following drawings for description:

[0017] Figure 1 It is a structural schematic view of the embodiment of the present application.

[0018] Figure 2 It is a longitudinal sectional view of the installation platform in the embodiment of the present application.

[0019] Figure 3 It is Figure 2 It is an enlarged schematic view of position A in FIG. 4.

[0020] Figure 4 It is Figure 2 It is an enlarged schematic view of position B in FIG. 4.

[0021] Figure 5For Figure 3 An enlarged schematic view at C.

[0022] In the drawings, the following are marked: mounting platform 1, ladder beam 2, step plate 3, guide rail 4, sliding seat 5, clamping block 6, support cylinder 7, sliding piece 8, hydraulic plate 9, elastic reset piece 10, connecting rod 11, connecting piece 12, mounting seat 13, positioning cylinder 14, fixing rod 15, annular plate 16, pressure plate 17, spiral groove 18, guide block 19, abutting plate 20, positioning seat 21, rubber piece 22, connecting rod 23, support shaft 24. DETAILED DESCRIPTION

[0023] As Figures 1-5 shown:

[0024] A novel assembled folded slab beam type stair includes a plurality of L-shaped step plates 3 and two mounting platforms 1, two ladder beams 2 for laying the step plates 3 are arranged between the two mounting platforms 1, mounting grooves are arranged on the mounting platforms 1, circular grooves are arranged on both sides of the bottom of the mounting grooves, the circular grooves are horizontally arranged with guide rails 4, support shafts 24 arranged vertically are coaxially connected in the circular grooves, and the top ends of the support shafts 24 are connected with the middle parts of the corresponding guide rails 4; mounting pieces are detachably connected with the bottom parts of both ends of the ladder beams 2, sliding seats 5 are arranged on the bottom parts of the mounting pieces, the sliding seats 5 are slidingly connected with the corresponding guide rails 4, a plurality of recesses are arranged on both sides of the guide rails 4, clamping blocks 6 with arc-shaped ends are slidingly arranged in the recesses, and elastic supporting pieces (conventional technical means, not shown in the figure) are arranged between the clamping blocks 6 and the recesses.

[0025] In the scheme, the two ladder beams 2 are mounted on the mounting platforms 1, the mounting pieces are connected and fixed with the ladder beams 2, the step plates 3 are hoisted and connected and fixed with the ladder beams 2, in normal state, the corresponding clamping blocks 6 play a clamping and limiting role on both sides of the sliding seats 5, when an earthquake occurs, the ladder beams 2 are relatively moved with the mounting platforms 1 due to the influence of the earthquake transverse wave, the ladder beams 2 drive the sliding seats 5 to move relative to the guide rails 4 through the connecting pieces 12, the sliding seats 5 drive the guide rails 4 to rotate, so that the guide rails 4 move towards the moving direction of the ladder beams 2, when the sliding seats 5 slide, the arc-shaped end faces of the clamping blocks 6 are extruded to slide into the recesses, and the clamping blocks 6 extrude the elastic supporting pieces to play a certain energy dissipation role. In the scheme, through the cooperation of the guide rails 4 and the sliding seats 5, the ladder beams 2 can slide a certain distance relative to the mounting platforms 1 and dissipate energy when an earthquake occurs, the shear force at the connection between the ladder beams 2 and the mounting platforms 1 is dissipated, and the shear force at the connection between the ladder beams 2 and the mounting platforms 1 is prevented from being too large to break.

[0026] In the embodiment, the upper surface of the ladder beam 2 is provided with a plurality of accommodating grooves, and a support cylinder 7 is detachably connected in the accommodating grooves. A plurality of vertical guide grooves are formed in the inner wall of the support cylinder 7, and a sliding piece 8 is slidably connected in the guide grooves. Hydraulic cavities are formed in both ends of the guide grooves, and damping liquid is arranged in the hydraulic cavities. A hydraulic plate 9 is fixed at both ends of the sliding piece 8 and slidably connected with the hydraulic cavities. An elastic reset piece 10 is arranged between the hydraulic plate 9 and the hydraulic cavities. A connecting shaft is coaxially arranged in the support cylinder 7, and a connecting rod 11 is hingedly connected between the connecting shaft and the corresponding sliding piece 8. A connecting piece 12 is fixed at the top end of the connecting shaft, and a plurality of mounting seats 13 are pre-buried in the bottom of the step plate 3 and detachably connected with the corresponding connecting pieces 12.

[0027] In the scheme, when the step plate 3 moves relative to the ladder beam 2 under the action of the earthquake wave, the step plate 3 drives the connecting shaft to move synchronously, and the connecting shaft drives the sliding piece 8 to move relative to the support cylinder 7 through the connecting rod 11. The sliding piece 8 drives the hydraulic plate 9 to extrude the damping liquid in the guide groove to perform energy dissipation work, thereby reducing the movement of the step plate 3 relative to the ladder beam 2. In the scheme, through the cooperation of the support cylinder 7 and the connecting shaft, the step plate 3 and the two ladder beams 2 can relatively slide when subjected to the action of the earthquake force. The shear force at the connection between the step plate 3 and the ladder beam 2 is dissipated to prevent the shear force at the connection between the step plate 3 and the ladder beam 2 from being too large to break.

[0028] In the embodiment, the mounting member includes a positioning cylinder 14 fixedly connected with the sliding seat 5. The positioning cylinder 14 is internally provided with damping liquid. A fixed rod 15 is coaxially and slidably arranged in the positioning cylinder 14. The top end of the fixed rod 15 is detachably connected with the ladder beam 2. An annular plate 16 is coaxially and rotatably connected with the periphery of the fixed rod 15. A plurality of pressure plates 17 are vertically arranged in a circular array at the lower end of the annular plate 16. A plurality of spiral grooves 18 are arranged in the positioning cylinder 14. Guide blocks 19 are slidably arranged in the spiral grooves 18.

[0029] In the scheme, when the ladder beam 2 moves longitudinally relative to the mounting platform 1 under the action of the earthquake, the ladder beam 2 drives the annular plate 16 to move vertically relative to the positioning cylinder 14 through the fixed rod 15. The annular plate 16 extrudes the damping liquid to perform the first energy dissipation. At the same time, the annular plate 16 is horizontally rotated through the cooperation of the guide blocks 19 and the spiral grooves 18. The annular plate 16 drives the pressure plates 17 to rotate synchronously and extrude the damping liquid, thereby playing an auxiliary energy dissipation role. In the scheme, the energy is dissipated through two ways, thereby reducing the movement of the ladder beam 2 under the action of the earthquake in the longitudinal direction and preventing the connection between the ladder beam 2 and the mounting platform 1 from being damaged.

[0030] In the embodiment, the installation groove side wall is provided with a chute towards the ladder beam 2, the chute is slidably connected with a U-shaped abutting plate 20, the lower end of the abutting plate 20 abuts against the step plate 3, a gap is reserved between the abutting plate 20 and the end of the chute, and a plurality of elastic reset members 10 are arranged between the abutting plate 20 and the chute.

[0031] The abutting plate 20 is arranged to reduce the gap between the ladder beam 2 and the installation platform 1, and the abutting plate 20 can move synchronously with the ladder beam 2 and always keep in contact with the ladder beam 2, so as to prevent the pedestrian from stepping into the gap and being injured.

[0032] In the embodiment, the circular groove bottom is provided with a plurality of coaxial annular grooves, the annular grooves are slidably connected with a positioning seat 21, and the positioning seat 21 is fixedly connected with the bottom of the guide rail 4.

[0033] The positioning seat 21 and the annular groove are matched to strengthen the connection strength between the guide rail 4 and the installation platform 1, and prevent the guide rail 4 from loosening.

[0034] In the embodiment, the abutting plate 20 is placed with a rubber member 22 for filling the gap between the installation groove and the step plate 3.

[0035] The rubber member 22 is arranged to fill the gap by the extensibility of the rubber member 22, and prevent sundries from falling into.

[0036] In the embodiment, the installation seat 13 top end exposes the step plate 3, and the installation seat 13 upper end is provided with a plurality of installation holes (conventional technical means, not shown in the figure).

[0037] The installation hole is arranged to facilitate the installation of the handrail.

[0038] Finally, it should be explained that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limited, although the above preferred embodiments have been described in detail, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.

Claims

1. A new type of assembled folded plate beam staircase, characterized by: The ladder is constructed of L-shaped components and has a bottom surface that is adapted to hold the treads in place for subsequent use. The ladder is constructed of L-shaped components and has a bottom surface that is adapted to hold the treads in place for subsequent use. The ladder is constructed of L-shaped components and has a bottom surface that is adapted to hold the treads in place for subsequent use.

2. The novel assembled folded plate beam staircase according to claim 1 is characterized in that: The upper surface of the ladder beam is provided with a plurality of accommodating grooves, and a supporting tube is detachably connected to the accommodating grooves. A plurality of vertically arranged guide grooves are opened on the inner wall of the supporting tube, and sliding members are slidably connected in the guide grooves; hydraulic chambers communicating with them are provided at both ends of the guide grooves, and damping fluid is provided in the hydraulic chambers. Hydraulic plates extending into the hydraulic chamber and slidably connected thereto are fixed at both ends of the sliding member, and elastic reset members are provided between the hydraulic plate and the hydraulic chamber; a connecting shaft is coaxially provided in the supporting tube, and an inclined connecting rod is hinged between the connecting shaft and the corresponding sliding member; a connecting member is fixed to the top end of the connecting shaft, and a plurality of mounting seats detachably connected to the corresponding connecting members are pre-embedded in the bottom of the step plate.

3. The novel assembled folded plate beam staircase according to claim 2 is characterized in that: The mounting part includes a positioning cylinder fixedly connected to the sliding seat, damping fluid is arranged inside the positioning cylinder, and a fixing rod is coaxially slidingly arranged on the positioning cylinder, and the top end of the fixing rod is detachably connected to the ladder beam; an annular plate is coaxially rotatably connected to the circumference of the fixing rod, and a plurality of pressure plates distributed in a circular array are vertically arranged at the lower end of the annular plate, a plurality of spiral grooves are arranged inside the positioning cylinder, and a guide block is arranged on the circumference of the annular plate that extends into the spiral groove and is slidably connected thereto.

4. The novel assembled folded plate beam staircase according to claim 3 is characterized in that: A sliding groove facing the ladder beam is opened on the side wall of the installation groove, and a clamping plate with a U-shaped cross-section is slidably connected in the sliding groove. The lower end of the clamping plate is pressed against the step plate, and a gap is reserved between the clamping plate and the end of the sliding groove. A number of elastic reset parts are also arranged between the clamping plate and the sliding groove.

5. The novel assembled folded plate beam staircase according to claim 4 is characterized in that: A plurality of coaxial annular grooves are provided at the bottom of the circular grooves. Positioning seats are slidably connected in the annular grooves, and the positioning seats are fixedly connected to the bottom of the guide rail.

6. The novel assembled folded plate beam staircase according to claim 5 is characterized in that: A rubber piece for filling the space between the mounting groove and the tread plate is placed on the abutting plate.

7. The novel assembled folded plate beam staircase according to claim 6 is characterized in that: The top of the mounting seat is exposed to the step plate, and the upper end of the mounting seat is provided with a plurality of mounting holes.

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