Fabricated protective structure suitable for steel structure stairs

Abstract

The invention relates to an assembly type protective structure suitable for a steel structure stair. The assembly type protective structure comprises a steel stair side edge beam, and the bottom of a vertical railing of a stair railing is fixedly connected with the steel stair side edge beam through bolts; a prefabricated skirting board is arranged on the steel stair side edge beam in a matched mode, is of a bottomless hollow structure, covers the top of the steel stair side edge beam and is tightly attached to the top face and the front face of the stair step. A hole K is formed in the top of the prefabricated skirting board, and the vertical handrail penetrates through the hole K in a vertical state; a one-way lock catch structure is arranged on the vertical handrail and used for limiting the vertical upward freedom degree of the prefabricated skirting board. The technical scheme is high in construction efficiency, good in safety performance, good in appearance quality, convenient to maintain and repair and environment-friendly in construction process.

Description

Technical Field

[0001] The present invention belongs to the field of prefabricated stairs, and particularly relates to a prefabricated protection structure applicable to steel structure stairs. Background Art

[0002] In the current construction of steel structure stairs in buildings, the connection construction method between the columns of the stair railing and the stair treads generally selects on-site welding. That is, first determine the column positions at the edges of the stair treads, then fix the bottoms of the columns on the treads by welding, and then weld the cross bars one by one to construct the railing framework. For the kick plate, generally, angle steel or flat steel is welded on-site on the vertical surface of the stair tread as a fixing piece, and then the metal kick plate is welded on the fixing piece. This traditional method highly depends on on-site welding operations and has the following defects: (1) Low installation and construction efficiency: The on-site welding process is complex and time-consuming, so the construction period is long, and the labor cost is high.

[0003] (2) The safety performance of the stairs cannot be guaranteed: The quality of on-site welding is directly affected by factors such as people, weather, and site. High welding skills are required for construction workers. Especially when rushing the construction period, various welding defects are particularly likely to occur, such as incomplete welds and false welds, resulting in the connection parts of the railing and the kick plate being prone to looseness and shaking during use, affecting the safety of the stairs. Welding cracks may cause the steel structure to be damaged in advance during a fire, shortening the fire resistance limit. The installation of the stair railing belongs to the decoration and finishing stage of the building. The fireproof coating of the steel components has been constructed in this stage, and the welding process will damage the fireproof coating on the surface of the steel components, resulting in a decline in fireproof performance.

[0004] (3) Poor appearance quality: It is very difficult to precisely control welding deformation during on-site welding, and it is easy to cause appearance quality problems such as skew and unevenness after the railing and the kick plate are installed, affecting the overall aesthetics and building quality.

[0005] (4) Difficult post-maintenance: Once the welded parts are damaged or the railing and kick plate components need to be replaced, the demolition and repair work is extremely cumbersome, and operations such as cutting and welding often need to be carried out again, which is not only costly but also may cause secondary damage to the stair structure.

[0006] (5) Poor construction environment: A large amount of soot, harmful gases, and strong light radiation are generated during the welding process, causing serious harm to the construction site environment and the physical health of construction workers, and it is not environmentally friendly. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to make up for the deficiencies of the prior art and provide a prefabricated protection structure applicable to steel structure stairs.

[0008] To solve the above technical problems, the technical solution of the present invention is as follows: A prefabricated protective structure suitable for steel structure stairs, comprising a steel staircase side beam, the bottom of a vertical railing of a staircase railing being fixedly connected to the steel staircase side beam by bolts; a prefabricated skirting board is matched on the steel staircase side beam, the prefabricated skirting board is a bottomless hollow structure, covers the top of the steel staircase side beam, and fits tightly with the top surface and front of the stair treads; a hole K is opened on the top of the prefabricated skirting board, and the vertical railing passes through the hole K in a vertical state; a one-way locking structure is provided on the vertical railing, and the one-way locking structure is used to limit the vertical upward freedom of the prefabricated skirting board.

[0009] Furthermore, the vertical railing includes two vertical long plates arranged on the left and right, and the two vertical long plates are arranged on the left and right sides of the steel staircase side beam, and there is space between the two vertical long plates; the one-way locking structure includes a locking buckle and an elastic locking portion arranged between the two vertical long plates; the elastic locking portion includes a main connecting plate, the main connecting plate is fixedly connected to the vertical long plates, and a fixed support plate is fixedly provided on the front and rear sides of the main connecting plate respectively, and the two fixed support plates and the main connecting plate form a "Π"-shaped structure, and an active The movable plate is hinged on the top of the movable plate and the main connecting plate, and the hinge point does not exceed the edge of the vertical railing. The movable plate is connected to the corresponding fixed support plate through a spring; when the movable plate is in an outward warping state under the support of the spring, the outer spacing between the two movable plates is greater than the front and rear width of the vertical railing; the lock buckle is sleeved on the outside of the vertical railing with a clearance fit and includes a cavity, the bottom surface of the cavity is a limiting table surface, and when the lock buckle is pushed from top to bottom to abut against the prefabricated skirting board, the two movable plates abut on the limiting table surface in an outward warping state, and the elastic locking part is located in the cavity.

[0010] Furthermore, it also includes an unlocking tool, which is used to squeeze the movable plate, thereby forcing the spring to be in a compressed state. When the outer distance between the two movable plates is not greater than the front-to-back width of the vertical railing, the lock can be pulled out upward, releasing the vertical upward freedom of the prefabricated skirting board.

[0011] Furthermore, the unlocking tool is a spring leaf clamp, comprising a pair of clamping ends for clamping the movable plate.

[0012] Furthermore, the side beams of the steel staircase are provided with mounting through holes, and bolts are passed through the vertical railings and the through holes and fastened with backup nuts.

[0013] The beneficial effects that can be achieved by the present invention are: (1) High installation and construction efficiency: This technical solution adopts prefabricated components and simple connection methods, which reduces on-site welding and complex adjustment processes, shortens construction time, effectively speeds up construction progress, and reduces labor costs.

[0014] (2) Good staircase safety performance: The innovative connection structure design effectively avoids the defects that are prone to occur in traditional welded connections, ensuring that the staircase railing and precast skirting board are not prone to looseness, shaking and other safety hazards during long-term use, and improving the overall safety and reliability of the staircase.

[0015] (3) Good appearance quality: The precast components are produced and processed in the factory with high dimensional accuracy, and the installation accuracy can be guaranteed through precise adjustment and measurement means during the installation process, effectively solving the problems of welding deformation and appearance quality that are difficult to control in traditional welding construction, making the railing and skirting board flat and beautiful as a whole after installation, meeting the appearance requirements of high-quality buildings, and improving the overall quality of the building.

[0016] (4) Convenient post-maintenance: The structure of this technical solution is a detachable connection method that is convenient for disassembly and assembly during post-maintenance or component replacement, with simple operation, low risk of secondary damage, and low maintenance cost.

[0017] (5) Good construction environment: Abandoning a large number of on-site welding operations effectively reduces the dust, harmful gases and strong light radiation generated during the welding process, improves the construction site environment, reduces the harm to the physical health of construction workers, conforms to the environmental protection concept of modern green building construction, and is conducive to the sustainable development of the construction industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic installation view of the side beam of the steel staircase in the embodiment of the present invention.

[0019] Figure 2 It is a schematic installation view of the vertical railing in the embodiment of the present invention.

[0020] Figure 3 It is a schematic installation view of the precast skirting board in the embodiment of the present invention.

[0021] Figure 4 It is a schematic installation view of the lock in the embodiment of the present invention.

[0022] Figure 5 It is a schematic view of the elastic locking part in the embodiment of the present invention.

[0023] Figure 6 is Figure 5 a partial enlarged view of part A in

[0024] Figure 7 It is a schematic process view of the locking of the lock and the elastic locking part in the embodiment of the present invention.

[0025] Figure 8 It is a schematic locking view of the lock and the elastic locking part in the embodiment of the present invention.

[0026] Figure 9 It is a schematic diagram of the unlocking tool in the embodiment of the present invention.

[0027] Figure 10 It is a schematic diagram of the initial state of using the unlocking tool to manipulate the elastic locking part in the embodiment of the present invention.

[0028] Figure 11 It is a schematic diagram of the end state of using the unlocking tool to manipulate the elastic locking part in the embodiment of the present invention.

[0029] In the figure: 1 - side beam of the steel staircase, 101 - installation through - hole, 2 - vertical railing, 3 - precast kick - board, 4 - lock catch, 401 - cavity, 402 - limiting table surface, 5 - elastic locking part, 501 - main connecting plate, 502 - fixed support plate, 503 - spring, 504 - movable plate, 6 - unlocking tool. Detailed implementation manners

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0031] The side beam of the steel staircase in the prior art is heightened to form a new side beam 1 of the steel staircase.

[0032] An assembled protective structure applicable to a steel - structure staircase includes a side beam 1 of the steel staircase and a staircase railing fixedly installed on the side beam 1 of the steel staircase. The staircase railing includes a railing handrail and a plurality of vertical railings 2. The vertical railing 2 includes two vertically - long plates arranged left and right, and the two vertically - long plates are respectively arranged on the left and right sides of the side beam 1 of the steel staircase, and there is a space between the two vertically - long plates. The bottom of the vertical railing 2 is fixedly connected to the side beam 1 of the steel staircase through bolts and nuts. Specifically: there are installation through - holes 101 (as Figure 1 shown) on the side beam 1 of the steel staircase, and the bolts pass through the vertical railing 2 and the through - holes 101 and are tightened with nuts (as Figure 2 shown).

[0033] A precast kick - board 3 is matched and arranged on the side beam 1 of the steel staircase. The precast kick - board 3 is a bottomless hollow structure, covering the top of the side beam 1 of the steel staircase, and is closely attached to the top surface and the front surface of the staircase step; a hole K is opened at the top of the precast kick - board 3, and the vertical railing 2 passes through the hole K in a vertical state (as Figure 3 shown); this limits the degrees of freedom of the precast kick - board 3 in five directions: downwards, leftwards, rightwards, forwards, and backwards. In addition, a one - way locking structure is provided on the vertical railing 2, and the one - way locking structure is used to limit the degree of freedom of the precast kick - board 3 moving vertically upwards (as Figure 4 shown), so that the precast kick - board 3 is completely relatively fixed to the side beam 1 of the steel staircase.

[0034] The one - way locking structure includes a lock catch 4 and an elastic locking part 5 arranged between the two vertically - long plates; as Figure 5 andFigure 6 As shown, the elastic locking portion 5 includes a main connecting plate 501, which is fixedly connected to the vertical long plate. A fixed support plate 502 is fixedly provided on the front and rear sides of the main connecting plate 501 respectively. The two fixed support plates 502 and the main connecting plate 501 form a "Π"-shaped structure. A movable plate 504 is correspondingly provided on the outer side of each fixed support plate 502. The top of the movable plate 504 is hinged to the main connecting plate 501, and the hinge point does not exceed the edge of the vertical railing 2. The movable plate 504 is connected to the corresponding fixed support plate 502 through a spring 503; when the movable plate 504 is in an outwardly warped state under the support of the spring 503, the outer distance between the two movable plates 504 is greater than the front and rear width of the vertical railing 2. Figure 7 As shown, the lock buckle 4 is loosely fitted on the outside of the vertical railing 2 and includes a cavity 401. The bottom surface of the cavity 401 is a limiting table 402. When the lock buckle 4 is pushed from top to bottom to abut the prefabricated skirting board 3, the two movable plates 504 abut on the limiting table 402 in an outwardly warped state, and the elastic locking part 5 is located in the cavity 401.

[0035] Also includes a lock picking tool 6, such as Figure 9 As shown, the unlocking tool 6 is a spring leaf clamp, including a pair of clamping ends 601, which are used to squeeze the movable plate 504, thereby forcing the spring 503 to be in a compressed state. When the outer spacing between the two movable plates 504 is not greater than the front-to-back width of the vertical railing 2, the lock 4 can be pulled out upward, releasing the vertical upward freedom of the prefabricated skirting board 3.

[0036] The construction method of this embodiment is: Step S1: Use tools to clean and level the step surface to ensure that there is no debris or protrusions on the step surface.

[0037] Step S2: The vertical railings 2 of the stair railings are fixedly connected to the steel stair side beams 1 by bolts and nuts in sequence, and the verticality of the vertical railings 2 is checked and adjusted according to the construction requirements; the connection of the bolts and nuts is tightened according to the torque specified by the construction requirements.

[0038] Step S3: Place the prefabricated skirting board 3 from top to bottom through the vertical railing 2 and place it on the steel staircase side beam 1.

[0039] Step S4: Apply structural adhesive to the contact portion between the prefabricated skirting board 3 and the stair tread to ensure that the two are firmly bonded.

[0040] Step S5: Pass the lock buckle 4 through the vertical railing 2 from top to bottom, and press it downward to form a one-way lock buckle with the movable plate 504 of the elastic locking part 5, so that the prefabricated skirting board 3 cannot move upward.

[0041] Step S6: Install railing handrails on the vertical railing 2.

[0042] The above is only one implementation of the present invention, and the protection scope of the present invention is not limited to the above embodiments. It should be noted that for those of ordinary skill in the art, several improvements and refinements made without departing from the idea of the present invention fall within the protection scope of the present invention.

Claims

1. An assembled protective structure suitable for steel structure stairs, characterized by: The invention comprises a steel staircase side beam (1), wherein the bottom of a vertical railing (2) of the staircase railing is fixedly connected to the steel staircase side beam (1) by bolts; a prefabricated skirting board (3) is matched on the steel staircase side beam (1), and the prefabricated skirting board (3) is a bottomless hollow structure, covers the top of the steel staircase side beam (1), and is tightly fitted with the top surface and the front of the stair tread; a hole K is opened on the top of the prefabricated skirting board (3), and the vertical railing (2) passes through the hole K in a vertical state; a one-way locking structure is provided on the vertical railing (2), and the one-way locking structure is used to limit the vertical upward freedom of the prefabricated skirting board (3).

2. The assembled protective structure for steel structure stairs according to claim 1 is characterized in that: The vertical railing (2) comprises two vertical long plates arranged on the left and right sides, and the two vertical long plates are arranged on the left and right sides of the steel staircase side beam (1), and there is a space between the two vertical long plates; the one-way lock structure comprises a lock (4) and an elastic lock portion (5) arranged between the two vertical long plates; the elastic lock portion (5) comprises a main connecting plate (501), the main connecting plate (501) is fixedly connected to the vertical long plates, and a fixed support plate (502) is fixedly arranged on the front and rear sides of the main connecting plate (501), respectively, and the two fixed support plates (502) and the main connecting plate (501) form a "Π"-shaped structure, and a movable plate (504) is correspondingly arranged on the outer side of each fixed support plate (502), and the top of the movable plate (504) is connected to the main connecting plate (501). 01), the hinge point does not exceed the edge of the vertical railing (2), the movable plate (504) is connected to the corresponding fixed support plate (502) by a spring (503); when the movable plate (504) is in an outward warping state under the support of the spring (503), the outer spacing between the two movable plates (504) is greater than the front-to-back width of the vertical railing (2); the lock buckle (4) is sleeved on the outside of the vertical railing (2) with clearance fit, and includes a cavity (401), the bottom surface of the cavity (401) is a limiting table surface (402), when the lock buckle (4) is pushed from top to bottom to abut against the prefabricated skirting board (3), the two movable plates (504) abut against the limiting table surface (402) in an outward warping state, and the elastic locking portion (5) is located in the cavity (401).

3. The assembled protective structure for steel structure stairs according to claim 2 is characterized in that: It also includes an unlocking tool (6) for squeezing the movable plate (504) to force the spring (503) into a compressed state. When the outer distance between the two movable plates (504) is not greater than the front-to-rear width of the vertical railing (2), the lock (4) can be pulled out upwards, thereby releasing the vertical upward freedom of the prefabricated skirting board (3).

4. The assembled protective structure for steel structure stairs according to claim 3 is characterized in that: The unlocking tool (6) is a spring leaf clamp, comprising a pair of clamping ends (601) for clamping the movable plate (504).

5. The assembled protective structure for steel structure stairs according to claim 1 is characterized in that: The steel staircase side beam (1) is provided with a mounting through hole (101), and bolts are passed through the vertical railing (2) and the through hole (101) and are fastened with spare nuts.

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