Prefabricated building turnover temporary stair

Abstract

The utility model provides an assembly type building turnover temporary stair, which is used in the technical field of assembly type building construction and comprises an upper stair unit, a lower stair unit, adjustable support legs and a protection unit, the upper stair unit comprises a telescopic support, an upper stair section connected to the telescopic support and a second platform; the telescopic support is provided with a telescopic part and comprises an inner side support and an outer side support; the lower stair unit comprises a lower stair section, stand columns and a first platform which are movably connected, the lower stair section can move up and down along the stand columns, and the stand columns comprise the inner side stand columns and the outer side stand columns. The stair has the advantages that the upper stair unit and the lower stair unit are arranged to be two mutually independent parts and can be hoisted respectively, the hoisting difficulty is lowered, and the requirement for hoisting equipment is lowered; the positions of the upper ladder section and the lower ladder section can be conveniently adjusted, and the ladder can be suitable for different floor heights; the device can be used for working conditions with different stairway widths and is more convenient to use; and the overall structure is simple, the construction cost is saved, mounting and dismounting are convenient and fast, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated building construction, in particular to a temporary staircase of a prefabricated building that can be turned around. Background Art

[0002] In recent years, with the strong support of government policies, prefabricated buildings have gradually become the mainstream form of contemporary construction. Prefabricated buildings have the advantages of saving resources, reducing construction waste, and green energy saving, and can effectively shorten the construction period. Among them, prefabricated stairs are very important prefabricated components in prefabricated structures. They need to be installed after the main structure is constructed and poured. During the structural construction process, there is no access for people to go up and down the stairs, and there are safety risks such as falling objects and objects hitting from high altitudes in edge protection and formwork operations. It is common in the prior art to build temporary stairs with all-steel pipe buckle connectors between external scaffoldings or other parts. This method requires repeated dismantling and erection, and has the problems of cumbersome construction, low construction efficiency and high material occupancy cost, resulting in high construction costs and waste of resources; there is also a kind of standardized temporary stairs in the prior art, which is installed as a whole by hoisting, simplifies the installation and disassembly steps and can be used in a turnover manner, but there are difficulties in hoisting, high requirements for hoisting equipment, and it is difficult to apply to situations with different floor heights and different staircase widths. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a temporary staircase for assembled buildings that can be circulated, which solves the problem of difficulty in hoisting temporary stairs. At the same time, it can be applied to working conditions with different floor heights and stair widths, and is easy to circulate and use.

[0004] The technical solution adopted by the utility model is: a temporary staircase for assembled buildings that can be turned around, including an upper staircase unit and a lower staircase unit that are independently arranged;

[0005] The upper staircase unit comprises a telescopic support and an upper staircase connected to the telescopic support; the telescopic support is provided with a telescopic portion for adjusting the height of the upper staircase so that the upper staircase is aligned with the upper floor;

[0006] The lower stair unit comprises a lower stair section and a column which are movably connected, and the lower stair section can move up and down along the column so that the top end of the lower stair section is aligned with the bottom end of the upper stair section.

[0007] Furthermore, the columns include inner columns and outer columns; the lower stair section includes a connecting piece, which is movably connected to the columns; the top end of the lower stair section is connected to the outer column through the connecting piece, and the bottom end of the lower stair section is connected to the inner column through the connecting piece.

[0008] Furthermore, the lower staircase unit also includes a first platform, which is connected to the connecting piece connected to the outer column and is aligned with the top end of the lower stair section.

[0009] Furthermore, the telescopic support includes an inner support and an outer support; the top end of the upper stair section is connected to the inner support, and the bottom end of the upper stair section is connected to the outer column; the telescopic part is located below the upper stair section.

[0010] Furthermore, the upper stair unit further includes a second platform, which is connected to the outer support and aligned with the bottom end of the upper stair section.

[0011] Furthermore, the first platform and the second platform are both provided with guardrails, and when the first platform and the second platform are aligned, the guardrails can be assembled to form a three-sided protection structure.

[0012] Furthermore, the inner column and the inner support are both provided with a connecting portion for overlapping with the lower floor slab.

[0013] Furthermore, it also includes adjustable feet, which are arranged at the bottom ends of the upper stair unit and the lower stair unit, and are used to fix the upper stair unit and the lower stair unit to the ground and adjust the heights of the two.

[0014] Furthermore, the adjustable foot includes a vertical rod and a horizontal rod arranged at the bottom of the vertical rod. The vertical rod, the outer support and the outer column are all provided with positioning holes that match and are arranged at intervals. By passing the positioning piece through different positioning holes, the outer support and the outer column can be fixed at different positions of the vertical rod.

[0015] Furthermore, it also includes a protection unit, which is detachably arranged on the telescopic support and the column, and is located above the upper stair section and the lower stair section.

[0016] The advantages and positive effects of the utility model are:

[0017] (1) By setting the upper staircase unit and the lower staircase unit as two independent parts, the upper staircase unit and the lower staircase unit can be hoisted separately by hoisting equipment, which reduces the difficulty of hoisting and the requirements for hoisting equipment; installation and disassembly are more convenient, and construction efficiency is improved.

[0018] (2) By setting a telescopic support, the position of the upper staircase can be conveniently adjusted. At the same time, by setting a movable column and a lower staircase, the position of the lower staircase can be adjusted, so that the device can be applied to different floor heights, forming a passage that is convenient for construction workers to pass through;

[0019] (3) By providing the first platform and the second platform, the device can be used in working conditions with different stair widths, making it more convenient to use;

[0020] (4) By setting the telescopic part and the connecting piece, the position of the upper and lower stairs can be easily adjusted to meet the height requirements;

[0021] (5) By setting adjustable feet, a stable support can be provided for the upper staircase unit and the lower staircase unit, and the overall height of the upper staircase unit and the lower staircase unit can be adjusted at the same time, so as to facilitate turnover and use.

[0022] (6) The overall structure is simple and can be made using common components on the construction site. It can also be used in a cyclical manner, thus saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of the lower staircase unit of a specific embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the upper staircase unit structure of a specific embodiment of the utility model;

[0026] Figure 4 It is a schematic diagram of the structure of a protection unit of a specific embodiment of the utility model;

[0027] Figure 5 It is a schematic diagram of the adjustable support foot structure of a specific embodiment of the utility model.

[0028] In the figure:

[0029] 10. Upper staircase unit 11. Upper staircase 12. Telescopic support

[0030] 121, inner support 122, outer support 123, telescopic part

[0031] 13. Second platform 14. Inner transverse connecting support 15. Outer transverse connecting support

[0032] 16. Longitudinal connecting support 17. Connecting part

[0033] 20. Lower staircase unit 21. Lower staircase 211. Connector

[0034] 22, column 221, inner column 222, outer column

[0035] 23, first platform 231, guardrail 24, inner lateral connecting rod

[0036] 25, outer lateral connecting rod 26, upper connecting rod 27, lower connecting rod

[0037] 30, adjustable feet 31, vertical rod 311, positioning hole

[0038] 32. Horizontal bar

[0039] 40. Protection unit DETAILED DESCRIPTION

[0040] The embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0041] The utility model provides a temporary staircase for assembled buildings, which is used in the case where the main structure of the assembled building is completed but the prefabricated staircase has not yet been installed, so as to provide a passage for construction workers to reach the upper floor from the lower floor.

[0042] like Figure 1 As shown, the temporary staircase for assembled buildings proposed by the utility model includes an upper staircase unit 10 and a lower staircase unit 20 which are independently arranged; it can be understood that the upper staircase unit 10 and the lower staircase unit 20 are both arranged in the stairwell reserved for the assembled building; wherein the upper staircase unit 10 includes a telescopic support 12 and an upper staircase section 11 connected to the telescopic support 12; the telescopic support 12 is provided with a telescopic portion 123 for adjusting the height of the upper staircase section 11 so that the upper staircase section 11 is aligned with the upper floor slab, specifically, the telescopic support 12 is arranged in the vertical direction, and the upper staircase section 11 is arranged in an inclined direction to the horizontal direction and has a top end and a bottom end; the telescopic support 12 can be extended by adjusting the telescopic portion 123 When the telescopic support 12 is extended, the upper stair section 11 is raised as a whole; conversely, when the telescopic support 12 is shortened, the upper stair section 11 is lowered as a whole; the lower stair unit 20 includes a lower stair section 21 and a column 22 that are movably connected, and the lower stair section 21 can move up and down along the column 22 to align the top end of the lower stair section 21 with the bottom end of the upper stair section 11; specifically, the column 22 is also arranged in the vertical direction, and the lower stair section 21 is arranged in an inclined direction to the horizontal direction and has a top end and a bottom end. When in use, the top end of the lower stair section 21 is aligned with the bottom end of the upper stair section 11, so that the upper stair section 11 and the lower stair section 21 form a continuous passage, and construction workers can reach the upper floor through the lower stair section 21 and the upper stair section 11.

[0043] The distance between the upper floor and the lower floor is the floor height. In the present embodiment, the length and height of the upper stair section 11 and the lower stair section 21 are designed and manufactured according to the floor height of the prefabricated building to be constructed. When in use, the upper stair unit 10 is hoisted to the stairwell by hoisting equipment, and the telescopic part 123 is adjusted as needed so that the top of the upper stair section 11 can be aligned with the upper floor. Then, the lower stair unit 20 is hoisted to the stairwell by hoisting equipment, and the lower stair section 21 is adjusted to move relative to the column 22 so that the top of the lower stair section 21 is aligned with the bottom of the upper stair section 11. Then, the upper stair section 11 and the upper floor, and the lower stair section 21 and the lower floor are overlapped to form a passage that is easy to pass.

[0044] In a specific embodiment, the prefabricated building to be constructed has different floor heights, and the lengths and heights of the upper stair section 11 and the lower stair section 21 are designed and manufactured according to the smaller of the different floor heights; when it is used for a floor whose floor height is greater than the sum of the heights of the upper stair section 11 and the lower stair section 21, the upper stair unit 10 is hoisted to the stairwell by a hoisting device, and the telescopic part 123 is adjusted as needed so that the top of the upper stair section 11 can be aligned with the upper floor slab and overlapped, and then the lower stair unit 20 is hoisted to the stairwell by a hoisting device, and the lower stair section 21 is adjusted to move relative to the column 22 so that the top of the lower stair section 21 is aligned with the bottom of the upper stair section 11, and at this time the bottom end of the lower stair section 21 is higher than the lower floor slab. In order to facilitate construction personnel to enter the lower stair section 21, an extension section is set between the lower floor slab and the lower stair section 21, which can achieve a stable connection between the lower floor slab and the lower stair section 21. The extension section in this embodiment is a common structure in the prior art, and can be set as a step, a slope or any other form suitable for people to pass through, which is not limited here. Preferably, a connecting component for connecting the extension section is provided at the bottom end of the lower stair section 21, and the construction personnel can easily install the extension section on the lower stair section 21.

[0045] By configuring the upper stair unit 10 and the lower stair unit 20 as two independent parts, the present application can use lifting equipment to lift the upper stair unit 10 and the lower stair unit 20 respectively, thereby reducing the difficulty of lifting and lowering the requirements for lifting equipment; by providing the telescopic support 12, the position of the upper stair section 11 can be conveniently adjusted, and by providing the movably connected columns 22 and the lower stair section 21, the position of the lower stair section 21 can be adjusted, which can be suitable for different floor heights to form a passage that is convenient for construction workers to pass through; at the same time, the upper stair unit 10 and the lower stair unit 20 can also be used separately as needed.

[0046] In the present application, the number of telescopic supports 12 and columns 22 can be set according to usage requirements and is not limited here; it can be understood that no matter how many telescopic supports 12 and columns 22 there are, they are all arranged on both sides of the width direction of the stairs without affecting the passage of construction workers.

[0047] In a specific embodiment, the telescopic supports 12 are provided in four numbers, two of which are connected to the top of the upper stair section 11 and are respectively arranged on both sides of the width direction of the upper stair section 11; the other two telescopic supports 12 are connected to the bottom of the upper stair section 11 and are respectively arranged on both sides of the width direction of the upper stair section 11; at the same time, the columns 22 are also provided in four numbers, two of which are connected to the top of the lower stair section 21 and are respectively arranged on both sides of the width direction of the upper stair section 11; the other two columns 22 are connected to the bottom of the lower stair section 21 and are respectively arranged on both sides of the width direction of the lower stair section 21. By providing the telescopic supports 12 and the columns 22, stable support can be provided for the upper stair section 11 and the lower stair section 21, respectively.

[0048] Furthermore, if Figure 2 As shown, the above-mentioned column 22 includes an inner column 221 and an outer column 222, wherein the inner column 221 is arranged on the side of the lower stair section 21 close to the lower floor, and the outer column 222 is arranged on the side of the lower stair section 21 away from the lower floor; the lower stair section 21 includes a connecting piece 211, and the connecting piece 211 is movably connected with the column 22; the top end of the lower stair section 21 is connected to the outer column 222 through the connecting piece 211, and the bottom end of the lower stair section 21 is connected to the inner column 221 through the connecting piece 211. By adjusting the position of the connecting piece 211 relative to the inner column 221 and the outer column 222, the position of the lower stair section 21 can be adjusted so that it can meet the requirements of the use height. It can be understood that the connecting piece 211 connected to the inner column 221 and the connecting piece 211 connected to the outer column 222 are synchronously raised or lowered, thereby driving the lower stair section 21 as a whole to rise or fall along the column 22.

[0049] Preferably, in order to enhance the overall structural stability of the lower staircase unit 20, an inner transverse connecting rod 24 is provided between the inner columns 221, and an outer transverse connecting rod 25 is provided between the outer columns 222; and / or a longitudinal connecting rod and a diagonal rod are provided between the inner columns 221 and the outer columns 222.

[0050] In a specific embodiment, Figure 2As shown, the inner transverse connecting rod 24 is arranged at the upper part of the two inner columns 221 and is located above the bottom end of the lower stair section 21; the outer transverse connecting rod 25 is arranged at the lower part of the outer column 222 and is located below the top end of the lower stair section 21; the longitudinal connecting rods include two upper connecting rods 26 and two lower connecting rods 27, wherein one end of the lower connecting rod 27 is connected to the lower part of the inner column 221, and the other end is connected to the outer column 222 at a position corresponding to the outer transverse connecting rod 25, that is, the outer transverse connecting rod 25 and the lower connecting rod 2 7 are located at the same height, one end of the upper connecting rod 26 is connected to the position corresponding to the inner column 221 and the inner transverse connecting rod 24, and the other end is connected to the upper part of the outer column 222; the upper connecting rod 26 and the lower connecting rod 27 connect the inner column 221 and the outer column 222 to form an integral structure, thereby improving the stability of the overall structure; at the same time, the upper connecting rod 26 and the lower connecting rod 27 limit the moving range of the connecting member 211, so that the lower ladder section 21 can only move between the upper connecting rod 26 and the lower connecting rod 27, thereby improving the safety of the device.

[0051] In this embodiment, the column 22 and the connecting piece 211 are both made of square steel pipes. The cross-sectional size of the connecting piece 211 is larger than the cross-sectional size of the column 22, and is sleeved on the outside of the column 22; the column 22 and the connecting piece 211 are provided with matching through holes. Specifically, the two ends of the upper stair section 11 are respectively welded to one side of the connecting piece 211, and the above-mentioned through holes are arranged on the other two opposite sides of the connecting piece 211; when in use, the position of the connecting piece 211 on the column 22 is adjusted as needed, and fasteners such as bolts are passed through the through holes to fix the connecting piece 211 to the column 22, so that the lower stair section 21 is firmly fixed to the column 22.

[0052] Furthermore, the lower stair unit 20 also includes a first platform 23, which is connected to a connecting piece 211 connected to the outer column 222 and is aligned with the top of the lower stair section 21. At the same time, the width of the first platform 23 is the same as the width of the lower stair section 21. The first platform 23 is arranged in a horizontal direction as a whole. It can be understood that the first platform 23 is part of the rest platform constituting the stair passage and moves along the column 22 synchronously with the lower stair section 21.

[0053] Furthermore, if Figure 3As shown, the telescopic support 12 includes an inner support 121 and an outer support 122; wherein the inner support 121 is arranged on the side of the upper stair section 11 close to the upper floor, and the outer support 122 is arranged on the side of the upper stair section 11 away from the upper floor; the top end of the upper stair section 11 is connected to the inner support 121, and the bottom end is connected to the outer column 222; the telescopic section is arranged below the upper stair section 11, and the position of the upper stair section 11 can be adjusted by controlling the telescopic section to meet the requirements of the use height; it can be understood that the telescopic part 123 of the inner support 121 and the telescopic part 123 of the outer support 122 are adjusted synchronously and in the same direction, thereby driving the upper stair section 11 as a whole to rise or fall.

[0054] Preferably, in order to enhance the overall structural stability of the upper staircase unit 10, an inner transverse connecting brace 14 is provided between the inner supports 121, and an outer transverse connecting brace 15 is provided between the outer columns 222; and / or a longitudinal connecting brace 16 and a diagonal brace are provided between the inner supports 121 and the outer supports 122.

[0055] In a specific embodiment, Figure 3 As shown, the inner transverse connecting brace 14 is arranged at the lower part of the two inner supports 121 and is located below the top of the upper stair section 11; the outer transverse connecting brace 15 is arranged at the lower part of the outer support 122 and is located below the bottom end of the upper stair section 11; the longitudinal connecting braces 16 are all arranged below the telescopic portion 123, and the inner transverse connecting brace 14, the outer transverse connecting brace 15 and the longitudinal connecting brace 16 are all arranged at the same height, connecting the inner support 121 and the outer support 122 to form an integral structure, thereby improving the stability of the overall structure; at the same time, it will not affect the adjustment of the telescopic section, so that the upper stair section 11 can be adjusted according to the height of the upper floor to be constructed, to meet the use requirements of different heights.

[0056] In this embodiment, the inner support 121 and the outer support 122 are both made of two-section square steel pipes, which include an upper support and a lower support. The upper support and the lower support have different cross-sectional sizes, and the two are plugged together to form the above-mentioned telescopic part 123; the upper support and the lower support are provided with corresponding through holes. When in use, the upper support and the lower support can be firmly connected by passing fasteners such as bolts through the through holes. When fasteners such as bolts pass through different through holes, the lengths of the telescopic part 123 are different, so that the position of the upper stair section 11 can be adjusted according to the height of the upper floor slab.

[0057] Furthermore, the upper stair unit 10 also includes a second platform 13, which is connected to the outer support 122 and aligned with the bottom end of the upper stair section 11; at the same time, the width of the second platform 13 is the same as the width of the upper stair section 11, and the second platform 13 is arranged in a horizontal direction as a whole. It can be understood that the second platform 13 is also part of the rest platform constituting the stair passage.

[0058] Furthermore, both the first platform 23 and the second platform 13 are provided with a guardrail 231. Specifically, the first platform 23 includes two vertically connected guardrails 231, one of which is arranged on the side away from the upper stair section 11 and is connected to the guardrail 231 of the lower stair section 21 to form a whole, and the other guardrail 231 is arranged on the side of the platform away from the lower stair section 21; similarly, the second platform 13 includes two vertically connected guardrails 231, one of which is arranged on the side away from the lower stair section 21 and is connected to the guardrail 231 of the upper stair section 11 to form a whole, and the other guardrail 231 is arranged on the side of the second platform 13 away from the upper stair section 11; when the first platform 23 and the second platform 13 are aligned, the guardrails 231 can be assembled to form a three-sided protection structure.

[0059] In a specific embodiment, when the top end of the lower stair section 21 is aligned with the bottom end of the upper stair section 11, the first platform 23 and the second platform 13 are also in an aligned state. At the same time, the guardrails 231 of the lower stair section 21, the upper stair section 11, the first platform 23 and the second platform 13 are enclosed to form an integral structure, which has a good protective effect.

[0060] In a specific embodiment, the width of the stairs in the design of the prefabricated building to be constructed is greater than the width of the stairs of the upper stair section 11 and the lower stair section 21, and the width of the rest platform in the design is greater than the sum of the widths of the first platform 23 and the second platform 13; when used under this working condition, after the upper stair unit 10 and the lower stair unit 20 are hoisted to the set position and installed, there is a gap between the first platform 23 and the second platform 13. In order to ensure the safe passage of construction personnel, a connecting platform is set up between the first platform 23 and the second platform 13, and railings are added to the two guardrail 231 brackets, so that a stable connection between the first platform 23 and the second platform 13 can be achieved. The connecting platform in this embodiment is a common structure in the prior art, and can be a springboard, a steel plate or any other form suitable for personnel passage, which is not limited here; by setting the first platform 23 and the second platform 13, the device can be applied to working conditions with different stair widths, and it is more convenient to use.

[0061] Furthermore, the inner column 221 and the inner support 121 are both provided with a connection portion 17 for overlapping with the lower floor slab. In a specific embodiment, the connection portion 17 is arranged at a position corresponding to the inner column 221 and the lower connecting rod 27, and / or the connection portion 17 is arranged at a position corresponding to the inner support 121 and the longitudinal connecting brace 16, so that the upper staircase unit 10 and the lower staircase unit 20 have good stability.

[0062] Furthermore, if Figure 1 and Figure 4 As shown, the temporary staircase for assembled buildings proposed in the present application also includes an adjustable foot 30, which is arranged at the bottom end of the upper stair unit 10 and the lower stair unit 20, and is used to fix the upper stair unit 10 and the lower stair unit 20 on the ground and adjust the height of the two; specifically, the adjustable foot 30 is inserted into the bottom of the outer support 122 and the outer column 222.

[0063] like Figure 1 As shown, in a specific embodiment, the inner support 121 and the inner column 221 overlap with the lower floor, and the outer support 122 and the outer column 222 are arranged on the ground at the bottom of the stairwell, which is usually lower than the lower floor; the purpose of arranging the adjustable feet 30 is that when the ground is in an uneven working condition, by adjusting the adjustable feet 30, the outer support 122 and the outer column 222 can be made to be in full contact with the ground, thereby avoiding partial suspension causing unbalanced force and affecting safety of use; on the other hand, when the device is used in different parts in a cyclical manner, the different parts have the same floor height but different distances between the lower floor and the ground, the height of the entire device can be made to meet the use requirements through the adjustable feet 30, without having to adjust the positions of the upper stair section 11 and the lower stair section 21 again, thereby facilitating the cyclical use of the entire device.

[0064] Furthermore, if Figure 4 As shown, the adjustable support leg 30 includes a vertical rod 31 and a horizontal rod 32 arranged at the bottom of the vertical rod 31. The vertical rod 31, the outer support 122 and the outer column 222 are all provided with positioning holes 311 that match and are arranged at intervals. By passing the positioning piece through different positioning holes 311, the outer support 122 and the outer column 222 can be located at different positions of the vertical rod 31, so as to adjust the overall height of the upper staircase unit 10 and the lower staircase unit 20. When in use, the adjustable support leg 30 is connected to the upper staircase unit 10 and the lower staircase unit 20, and is hoisted and installed synchronously with the two.

[0065] Furthermore, if Figure 5 As shown, the present application further includes a protection unit 40 , which is detachably disposed on the telescopic support 12 and the column 22 , respectively, and is located above the upper stair section 11 and the lower stair section 21 .

[0066] In a specific embodiment, the protection unit 40 includes a protection plate and a support frame for supporting the protection plate, the support frame includes a plurality of support rods corresponding to the columns 22 and the telescopic supports 12, the support rods, the columns 22 and the telescopic supports 12 are provided with corresponding through holes, the support rods are inserted into the tops of the columns 22 and the telescopic supports 12, and are fixed to the columns 22 and the telescopic supports 12 by fasteners such as bolts, so as to facilitate the installation and disassembly of the protection unit 40; when in use, after the upper stair unit 10 and the lower stair unit 20 are installed, the protection unit 40 is installed.

[0067] The advantages and positive effects of the utility model are:

[0068] (1) By arranging the upper staircase unit and the lower staircase unit as two independent parts, the upper staircase unit and the lower staircase unit can be hoisted separately by hoisting equipment, which reduces the difficulty of hoisting and reduces the requirements for hoisting equipment;

[0069] (2) By setting a telescopic support, the position of the upper staircase can be easily adjusted. At the same time, by setting a movable column and a lower staircase, the position of the lower staircase can be adjusted, which can be applied to different floor heights and form a passage that is convenient for construction workers to pass through;

[0070] (3) By providing the first platform and the second platform, the device can be used in working conditions with different stair widths, making it more convenient to use;

[0071] (4) By setting the telescopic part and the connecting piece, the position of the upper and lower stairs can be easily adjusted to meet the height requirements;

[0072] (5) By setting adjustable feet, a stable support can be provided for the upper staircase unit and the lower staircase unit, and the overall height of the upper staircase unit and the lower staircase unit can be adjusted at the same time, so as to facilitate turnover and use.

[0073] (6) The overall structure is simple and can be made using common components on the construction site. It can be used in a cyclical manner, thus saving construction costs.

[0074] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A temporary staircase for assembled buildings, characterized by: It includes an upper staircase unit and a lower staircase unit which are independently arranged; The upper staircase unit comprises a telescopic support and an upper staircase connected to the telescopic support; the telescopic support is provided with a telescopic portion for adjusting the height of the upper staircase so that the upper staircase is aligned with the upper floor; The lower stair unit comprises a lower stair section and a column which are movably connected, and the lower stair section can move up and down along the column so that the top end of the lower stair section is aligned with the bottom end of the upper stair section.

2. The temporary staircase for prefabricated buildings according to claim 1 is characterized in that: The columns include inner columns and outer columns; the lower stair section includes a connecting piece, and the connecting piece is movably connected to the columns; the top end of the lower stair section is connected to the outer column through the connecting piece, and the bottom end of the lower stair section is connected to the inner column through the connecting piece.

3. The revolving temporary staircase for prefabricated buildings according to claim 2 is characterized in that: The lower stair unit further includes a first platform connected to the connector connected to the outer column and aligned with the top end of the lower stair section.

4. The temporary staircase for prefabricated buildings according to claim 3 is characterized in that: The telescopic support includes an inner support and an outer support; the top end of the upper stair section is connected to the inner support, and the bottom end of the upper stair section is connected to the outer column; the telescopic part is located below the upper stair section.

5. The revolving temporary staircase for prefabricated buildings according to claim 4 is characterized in that: The upper stair unit also includes a second platform connected to the outer support and aligned with the bottom end of the upper stair run.

6. The revolving temporary staircase for prefabricated buildings according to claim 5 is characterized by: The first platform and the second platform are both provided with guardrails. When the first platform and the second platform are aligned, the guardrails can be assembled to form a three-sided protection structure.

7. The revolving temporary staircase of a prefabricated building according to any one of claims 4 to 6, characterized in that: The inner column and the inner support are both provided with a connecting portion for overlapping with the lower floor slab.

8. The revolving temporary staircase for prefabricated buildings according to claim 7 is characterized in that: It also includes adjustable feet, which are arranged at the bottom ends of the upper staircase unit and the lower staircase unit and are used to fix the upper staircase unit and the lower staircase unit to the ground and adjust the heights of the two.

9. The temporary staircase for assembled buildings according to claim 8 is characterized by: The adjustable foot includes a vertical rod and a horizontal rod arranged at the bottom of the vertical rod. The vertical rod, the outer support and the outer column are all provided with positioning holes that match and are arranged at intervals. By passing the positioning piece through different positioning holes, the outer support and the outer column can be fixed at different positions of the vertical rod.

10. The revolving temporary staircase of a prefabricated building according to any one of claims 1 to 6, 8 or 9, characterized in that: It also includes a protection unit, which is detachably arranged on the telescopic support and the column, and is located above the upper stair section and the lower stair section.

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