Prefabricated stair assembly and building

Abstract

The application provides a fabricated stair assembly and a building body, and relates to the technical field of building.The fabricated stair assembly comprises two mounting column beams and two mounting fixed bases fixed with external walls, the top of each of the two mounting column beams is fixedly connected with a positioning frame, the two mounting fixed bases are respectively arranged at the two ends of the mounting column beams, and the two ends of the mounting column beam are fixedly connected with fixed hooks.The fabricated stair assembly and the building body are characterized in that a fixing plug plate on the outer side of a third threaded rod at the bottom of the reinforcing plate is aligned with a strip-shaped groove formed at the top of the mounting column beam, the fixing plug plate is smoothly inserted into a circular groove formed at the bottom of the strip-shaped groove, the fixing plug plate is clamped in the fixing plug plate, the fixing plug at the bottom of the fixing plug plate is inserted into the groove, and a fixed nut is mounted on the outer side of the third threaded rod, so that the mounting column beam and the reinforcing plate are fixed through the fixing plug plate, the stability between the two mounting column beams is reinforced through the reinforcing plate, and the safety during use is ensured.

Description

Technical Field

[0001] This invention relates to a staircase with lighting, specifically a prefabricated staircase component and a building structure, belonging to the field of building technology. Background Technology

[0002] A staircase is a component in a building that serves as a means of transportation between floors. It consists of a series of steps, platforms, and enclosing structures. Staircases are also required in high-rise buildings with elevators. Staircases are divided into two main categories: ordinary staircases and special staircases. Ordinary staircases include reinforced concrete staircases, steel staircases, and wooden staircases.

[0003] A prefabricated staircase component, staircase, and building structure are disclosed under patent number CN110273512A, relating to the construction field. The component includes: at least one main beam with a stepped mounting surface, on which a first mounting groove is provided; a stair tread with a first mounting hole that mates with the first mounting groove; the stair tread is disposed on the mounting surface, with the first mounting groove corresponding to the first mounting hole; a first connector includes a first limiting part and a first insertion part; the first insertion part is inserted along the first mounting hole and fixed within the first mounting groove, and the first limiting part fixes the stair tread to the mounting surface, thereby preventing the stair tread from detaching from the mounting surface of the main beam. Through the fixation between the first insertion part and the first mounting groove, the stair tread is fixed to the mounting surface of the main beam, preventing the stair tread from detaching from the mounting surface. This allows for a fixed assembly between the stair tread and the main beam, resulting in a more stable assembly and preventing separation in both the lateral and longitudinal directions.

[0004] The above solution has many advantages, but it also has the following drawbacks: When the stairs are actually assembled, there are often errors in the angle. When there are errors, the assembled stairs need to be adjusted in angle. After the angle is adjusted, the steps are fixed, which makes it impossible for the steps to be perpendicular to the ground, so the stairs need to be remade. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide prefabricated staircase components and building structures to solve the above-mentioned problems. In the prior art, when staircases are actually assembled, there are often angular errors. When there are errors, the assembled staircases need to be adjusted in angle. After the angle is adjusted, the steps are fixed, which makes it impossible for the steps to remain perpendicular to the ground, resulting in the need to remake them.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a prefabricated staircase assembly, comprising two mounting beams and two mounting bases fixed to an external wall. A positioning frame is fixedly connected to the top of each of the two mounting beams. The two mounting bases are respectively located at both ends of the mounting beams. A fixing hook is fixedly connected to both ends of each mounting beam, and the fixing hook engages with the mounting base. Multiple step supports are provided between the two mounting beams. Each of the two positioning frames contains a positioning mounting base corresponding to one of the multiple step supports. Each positioning mounting base contains a connecting component for fixing the step supports.

[0009] Each of the multiple positioning mounting seats has a positioning frame fixedly connected to one side. The positioning frame passes through the positioning frame and is rotatably connected to the positioning frame. Each of the multiple positioning frames has a handrail fixing seat fixedly connected to one side. The top of the handrail fixing seat is provided with a handrail column. An adjustment component is provided between the positioning frames on the same side. When installing, the positioning frame is angled. The adjustment component drives the positioning mounting seats and handrail columns on the positioning mounting seats and handrail fixing seats to adjust their angles so that they are always perpendicular to the ground.

[0010] Preferably, the connector includes a pushing and pressing plate, the top of the positioning mounting seat has an installation groove, the pushing and pressing plate is disposed on one side of the installation groove, a fifth threaded rod is rotatably connected to one side of the pushing and pressing plate, the fifth threaded rod passes through the positioning mounting seat and is threadedly connected to the positioning mounting seat, a limit plate is fixedly connected to the bottom of the stepped bracket, the limit plate passes through the installation groove and fits against the inner wall of the positioning mounting seat, a barbed plate is fixedly connected to the bottom of the stepped bracket, a limit hook plate is fixedly connected to the outer side of the positioning mounting seat, the barbed plate hooks with the limit hook plate, and the limit plate is pushed by the pushing and pressing plate to make the limit plate fit tightly against the positioning mounting seat, thereby achieving stable installation of the stepped bracket.

[0011] Preferably, the adjustment assembly includes two first parallel plates, which are rotatably connected to multiple positioning frames via pivot pins. A second parallel plate is rotatably connected between the two ends of each of the two first parallel plates. Multiple first hydraulic telescopic rods are hinged to the outer sides of each of the two first parallel plates. The first hydraulic telescopic rods are hinged to the positioning frame. A parallelogram structure is formed by the first and second parallel plates to achieve rotation of the positioning frame and adjust the installation angle of the positioning mounting seat.

[0012] Preferably, the bottom of the handrail column extends into the interior of the handrail fixing seat and is detachably installed by bolts. Multiple handrail fixing seats have mounting positioning plates fixedly connected to their bottoms. One side of the mounting positioning plate has a limiting slide plate, which is fixedly connected to the outside of the positioning frame. The other side of the mounting positioning plate has a first threaded rod, which passes through the mounting positioning plate and is threadedly connected to it. Multiple positioning threaded grooves are formed inside the limiting slide plate. The first threaded rod is adapted to the positioning threaded grooves to install the handrail column and the handrail fixing seat.

[0013] Preferably, the tops of the multiple handrail columns are rotatably connected to rotating seats and fixed to the handrail columns by bolts. After the angle of the rotating seats is adjusted, the rotating seats are fixed by bolts to prevent them from rotating. Each of the multiple rotating seats has a slot inside. The top of the mounting column beam is provided with a handrail support plate. The bottom of the handrail support plate is provided with multiple locking blocks. The multiple locking blocks extend into the slots and are fixed by bolts through the rotating seats and the handrail support plate.

[0014] Preferably, the system also includes multiple reinforcing plates, each disposed between two mounting column beams. Two or more third threaded rods are rotatably connected to the bottom of each reinforcing plate. A fixing plate is fixedly connected to the outer side of each third threaded rod, and a fixing plug is fixedly connected to the bottom of each fixing plate. Multiple strip-shaped grooves are formed at the top of the mounting column beams, with a circular groove formed at the bottom. The strip-shaped grooves are adapted to the size of the fixing plates. The fixing plates pass through the strip-shaped grooves and are disposed inside the circular grooves. A recess is provided at the bottom of the circular grooves, and the fixing plug is adapted to the recess. The third threaded rods pass through the mounting column beams and are rotatably connected to them. A fixing nut is threadedly connected to the outer side of each third threaded rod.

[0015] Preferably, two first pull plates are fixedly connected to the outer sides of the two reinforcing plates near the two mounting bases. A second pull plate is rotatably connected to the outer sides of each of the two first pull plates. A threaded cylinder is connected to the outer side of each first pull plate via a universal joint. A fourth threaded rod is threadedly connected to the outer side of the threaded cylinder, and the fourth threaded rod is hinged to the second pull plate. A positioning insert is fixedly connected to one end of each of the two second pull plates. A mounting component for fixing is provided between the positioning insert and the mounting base.

[0016] Preferably, the mounting component includes a limiting plate, which is hinged to both sides of the positioning insert plate. An adapter groove is provided on one side of the mounting base. The positioning insert plate is inserted into the mounting base. A spring is fixedly connected between the limiting plate and the positioning insert plate. The limiting plate is engaged in the adapter groove. A positioning socket is provided on the top of the mounting base. One side of the positioning socket passes through the mounting base and the positioning insert plate. The positioning socket is fixed to the mounting base by screws.

[0017] Preferably, the top of the stepped support is provided with a placement groove, and a lighting lamp for illumination is fixedly connected inside the placement groove.

[0018] A building structure, characterized in that it comprises: the aforementioned prefabricated staircase component.

[0019] This invention provides prefabricated staircase components and building structures, which have the following beneficial effects:

[0020] 1. The prefabricated staircase component and building body have placement slots on the top of multiple step supports. Lighting lamps are installed inside the placement slots. At night, the lighting lamps can be turned on to provide illumination and ensure that people can walk on the stairs.

[0021] 2. The prefabricated staircase component and building structure are equipped with a fixed insert plate on the outside of the third threaded rod at the bottom of the reinforcing plate. The top of the column beam has a slot, which allows the fixed insert plate to smoothly enter the round groove formed at the bottom of the slot. The fixed insert plate is then locked inside the fixed insert plate, and the fixed plug at the bottom of the fixed insert plate is inserted into the groove. A fixing nut is then installed on the outside of the third threaded rod. Thus, the fixed insert plate fixes the column beam and the reinforcing plate. The reinforcing plate strengthens the stability between the two column beams and ensures safety during use.

[0022] 3. In this prefabricated staircase component and building structure, after the tilt angle of the installed columns and beams is adjusted, the step support often cannot be perpendicular to the ground, requiring the staircase to be redesigned or the step support to be modified. In this solution, two first parallel plates are set on both sides of multiple positioning frames on the same side. Multiple positioning frames are rotatably connected to the first parallel plates through axle pins. Then, through the second parallel plates set at both ends of the first parallel plates, the two first parallel plates and the two second parallel plates form a parallelogram structure. When the first hydraulic telescopic rod is activated to push the hinged first parallel plates, the first parallel plates are deformed, thereby causing the positioning frames to rotate, which in turn causes the positioning mounting seats and handrail fixing seats to rotate, adjusting the angle of the positioning mounting seats and handrail fixing seats so that the step support and handrail columns on the positioning mounting seats and handrail fixing seats always remain perpendicular to the ground.

[0023] 4. The prefabricated staircase component and building body are fixed by spring-driven limit plate. Then, the positioning plate and mounting bracket are further fixed by inserting positioning socket into the positioning plate and mounting bracket. The reinforcing plate is then installed on the mounting column beam to complete the overall installation. In order to make the reinforcing plate fit snugly with the mounting column beam, the angle between the first pull plate and the second pull plate is adjusted by rotating the threaded cylinder, so that the reinforcing plate can be smoothly installed with the mounting column beam. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the mounting column-beam structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the handrail column structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the stepped support structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the positioning mounting base structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the reinforcing plate structure of the present invention;

[0030] Figure 7 This is a partial cross-sectional view of the reinforcing plate of the present invention;

[0031] Figure 8 This is a schematic diagram of the third threaded rod structure of the present invention;

[0032] Figure 9 This is a cross-sectional view of the mounting bracket of the present invention;

[0033] Figure 10 This is a schematic diagram of the first pull plate structure of the present invention;

[0034] Figure 11 This is a schematic diagram of the handrail fixing base structure of the present invention;

[0035] Figure 12 This is a schematic diagram of the connector structure of the present invention.

[0036] In the diagram: 1. Mounting column beam; 2. Positioning frame; 3. Step bracket; 301. Limiting insert plate; 302. Barbed clamping plate; 304. Lighting lamp; 4. Mounting fixing seat; 5. Positioning mounting seat; 501. Mounting groove; 502. Pushing and pressing plate; 503. Fifth threaded rod; 504. Limiting hook plate; 6. Handrail column; 601. Handrail fixing seat; 602. Mounting positioning plate; 603. First threaded rod; 604. Limiting sliding plate; 7. Rotating seat; 8. Handrail support plate; 9. Reinforcing plate; 901. 902. Strip groove; 903. Circular groove; 904. Third threaded rod; 905. Fixing plate; 906. Fixing nut; 907. Fixing plug; 10. Positioning frame; 101. First parallel plate; 102. Second parallel plate; 103. First hydraulic telescopic rod; 12. Fixing hook; 13. Positioning plate; 1301. Limiting plate; 1302. First pull plate; 1304. Second pull plate; 1305. Fourth threaded rod; 1306. Threaded cylinder; 1307. Spring; 1308. Positioning socket. Detailed Implementation

[0037] This invention provides prefabricated staircase components and building structures.

[0038] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 It includes two mounting beams 1 and two mounting bases 4 fixed to the external wall. The top of each of the two mounting beams 1 is fixedly connected to a positioning frame 2. The two mounting bases 4 are respectively set at both ends of the mounting beams 1. The two ends of the mounting beams 1 are fixedly connected to a fixing hook 12, which is hooked to the mounting base 4. Multiple stepped supports 3 are provided between the two mounting beams 1. The top of the stepped supports 3 is provided with a placement groove. A lighting lamp 304 for lighting is fixedly connected inside the placement groove. The two positioning frames 2 are each provided with a positioning mounting base 5 corresponding to the multiple stepped supports 3. The positioning mounting base 5 is provided with a connector for fixing the stepped supports 3.

[0039] It also includes multiple reinforcing plates 9, which are all set between two mounting column beams 1. The bottom of the reinforcing plate 9 is rotatably connected to two or more third threaded rods 903. The outer side of the third threaded rod 903 is fixedly connected to a fixing plate 904. The bottom of the fixing plate 904 is fixedly connected to a fixing plug 906. The top of the mounting column beam 1 has multiple strip grooves 901. The lower part of the strip grooves 901 is formed into a circular groove 902. The strip grooves 901 are adapted to the size of the fixing plate 904. The fixing plate 904 passes through the strip grooves 901 and is set inside the circular groove 902. The bottom of the circular groove 902 is provided with a groove. The fixing plug 906 is adapted to the groove. The third threaded rod 903 passes through the mounting column beam 1 and is rotatably connected to the mounting column beam 1. The outer side of the third threaded rod 903 is threadedly connected to a fixing nut 905.

[0040] Specifically, during assembly, multiple reinforcing plates 9 are installed between the two mounting beams 1. The first and last reinforcing plates 9 are installed last. The fixing insert 904 on the outside of the third threaded rod 903 at the bottom of the reinforcing plate 9 is aligned with the strip groove 901 on the top of the mounting beam 1, allowing the fixing insert 904 to smoothly enter the circular groove 902 formed at the bottom of the strip groove 901. The fixing insert 904 is then secured inside the fixing insert 904, and the fixing plug 906 at the bottom of the fixing insert 904 is inserted into the groove. Finally, a fixing nut 905 is installed on the outside of the third threaded rod 903. Thus, the mounting beam 1 and the reinforcing plate 9 are fixed by the fixing insert 904. The reinforcing plates 9 enhance the stability between the two mounting beams 1, ensuring safety during use.

[0041] The connecting components include a pushing and pressing plate 502, a mounting groove 501 on the top of the positioning mounting base 5, the pushing and pressing plate 502 being disposed on one side of the mounting groove 501, a fifth threaded rod 503 being rotatably connected to one side of the pushing and pressing plate 502, the fifth threaded rod 503 passing through the positioning mounting base 5 and being threadedly connected to the positioning mounting base 5, a limiting insert plate 301 being fixedly connected to the bottom of the stepped bracket 3, the limiting insert plate 301 passing through the mounting groove 501 and fitting against the inner wall of the positioning mounting base 5, a barbed locking plate 302 being fixedly connected to the bottom of the stepped bracket 3, a limiting hook plate 504 being fixedly connected to the outer side of the positioning mounting base 5, the barbed locking plate 302 hooking against the limiting hook plate 504, and by pushing the pressing plate 502 to push the limiting insert plate 301, the limiting insert plate 301 is tightly fitted against the positioning mounting base 5, thereby achieving stable installation of the stepped bracket 3.

[0042] Specifically, the limiting plate 301 fixedly connected to the bottom of the stepped bracket 3 is inserted into the mounting groove 501 opened at the top of the positioning mounting base 5. First, it is pushed downwards, then forwards, so that the limiting plate 301 fits against the inner wall of the mounting groove 501. Then, the barbed plate 302 fixedly connected to the bottom of the stepped bracket 3 is inserted into the limiting hook plate 504 fixedly connected to the outside of the positioning mounting base 5. When the barbed plate 302 moves upwards, it is limited. Then, by rotating the fifth threaded rod 503 threaded on the positioning mounting base 5, the fifth threaded rod 503 pushes the pressing plate 502, so that the pressing plate 502 fits against the limiting plate 301, thereby ensuring that the limiting plate 301 fits tightly against the positioning mounting base 5, achieving the effect of rapid installation.

[0043] Please see Figure 5 , Figure 11 and Figure 12Each of the multiple positioning mounting seats 5 has a positioning frame 10 fixedly connected to one side. The positioning frame 10 passes through the positioning frame 2 and is rotatably connected to the positioning frame 2. Each of the multiple positioning frames 10 has a handrail fixing seat 601 fixedly connected to one side. The top of the handrail fixing seat 601 is provided with a handrail column 6. The bottom of the handrail column 6 extends into the interior of the handrail fixing seat 601 and is detachably installed by bolts. The bottom of the multiple handrail fixing seats 601 is fixedly connected with a mounting positioning plate 602. One side of the mounting positioning plate 602 is provided with a limiting slide plate 604. The limiting slide plate 604 is fixedly connected to the outside of the positioning frame 2. The other side of the mounting positioning plate 602 is provided with a first threaded rod 603. The first threaded rod 603 passes through the mounting positioning plate 602 and is threadedly connected to the mounting positioning plate 602. The limiting slide plate 604 has multiple positioning threaded grooves inside. The first threaded rod 603 is adapted to the positioning threaded grooves to install the handrail column 6 and the handrail fixing seat 601.

[0044] Specifically, a positioning frame 10 is fixedly connected to one side of the positioning mounting base 5, and a handrail fixing base 601 is fixedly connected to one side of the positioning frame 10. The handrail column 6 is passed through the inside of the handrail fixing base 601 in sequence, and then fixed by bolts through the handrail fixing base 601 and the handrail column 6. At this time, the angle of the rotating seat 7 on the handrail column 6 is adjusted, and then the rotating seat 7 is fixed to the handrail column 6 by bolts. Then, the locking blocks fixedly connected to the bottom of the handrail support plate 8 are inserted into the locking slots opened inside the rotating seat 7 for quick assembly.

[0045] The top of each of the multiple handrail columns 6 is rotatably connected to a rotating seat 7 and fixed to the handrail column 6 with bolts. After the angle of the rotating seat 7 is adjusted, the rotating seat 7 is fixed with bolts to prevent the rotating seat 7 from rotating. Each of the multiple rotating seats 7 has a slot inside. The top of the mounting column beam 1 is provided with a handrail support plate 8. The bottom of the handrail support plate 8 is provided with multiple locking blocks. The multiple locking blocks extend into the slots and are fixed by bolts through the rotating seat 7 and the handrail support plate 8.

[0046] Please refer to it again. Figure 1 , Figure 4 , Figure 6 and Figure 11An adjustment assembly is provided between the positioning frames 10 on the same side. During installation, the positioning frame 2 is angled, and the adjustment assembly drives the positioning mounting seat 5 and the handrail column 6 on the handrail fixing seat 601 to adjust their angles so that they are always perpendicular to the ground. The adjustment assembly includes two first parallel plates 101, which are rotatably connected to multiple positioning frames 10 via pivot pins. A second parallel plate 102 is rotatably connected between the two ends of the two first parallel plates 101. Multiple first hydraulic telescopic rods 103 are hinged to the outer sides of the two first parallel plates 101. The first hydraulic telescopic rods 103 are hinged to the positioning frame 2. The first parallel plates 101 and the second parallel plates 102 form a parallelogram structure, which allows the positioning frame 10 to rotate and adjust the installation angle of the positioning mounting seat 5.

[0047] Specifically, during the actual assembly process, the tilt angle of the installed column beam 1 needs to be adjusted according to different requirements. After the tilt angle of the installed column beam 1 is adjusted, the step bracket 3 often cannot be perpendicular to the ground, requiring a redesign of the staircase or modification of the step bracket 3. In this solution, two first parallel plates 101 are set on both sides of multiple positioning frames 10 on the same side. Multiple positioning frames 10 are rotatably connected to the first parallel plates 101 through axle pins. Then, through the second parallel plates 102 set at both ends of the first parallel plates 101, the two first parallel plates 101 and the two second parallel plates 102 form a parallelogram structure. When the first hydraulic telescopic rod 103 is activated to push the hinged first parallel plate 101, the first parallel plate 101 is deformed, thereby causing the positioning frame 10 to rotate. This causes the positioning mounting seat 5 and the handrail fixing seat 601 to rotate, adjusting the angle of the positioning mounting seat 5 and the handrail fixing seat 601 so that the step bracket 3 and the handrail column 6 on the positioning mounting seat 5 and the handrail fixing seat 601 always remain perpendicular to the ground.

[0048] Then, by rotating the first threaded rod 603, the first threaded rod 603 is inserted into the positioning thread groove in the limiting slide plate 604, thereby limiting the handrail fixing seat 601 and further improving stability.

[0049] Furthermore, placement slots are provided on the top of multiple stepped supports 3. Lighting lamps 304 are installed inside the placement slots. At night, the lighting lamps 304 can be turned on to provide illumination, ensuring that the installation is safe for personnel to walk on.

[0050] Please refer to it again. Figure 9 and Figure 10Two first pull plates 1302 are fixedly connected to the outer sides of the two reinforcing plates 9 near the two mounting bases 4. Two second pull plates 1304 are rotatably connected to the outer sides of the two first pull plates 1302. A threaded cylinder 1306 is connected to the outer side of the first pull plate 1302 through a universal joint. A fourth threaded rod 1305 is threadedly connected to the outer side of the threaded cylinder 1306. The fourth threaded rod 1305 is hinged to the second pull plate 1304. A positioning insert 13 is fixedly connected to one end of each of the two second pull plates 1304. A mounting component for fixing is provided between the positioning insert 13 and the mounting base 4.

[0051] The mounting components include a limiting plate 1301, which is hinged to both sides of the positioning insert plate 13. An adapter groove is provided on one side of the mounting base 4. The positioning insert plate 13 is inserted into the mounting base 4. A spring 1307 is fixedly connected between the limiting plate 1301 and the positioning insert plate 13. The limiting plate 1301 is engaged in the adapter groove. A positioning socket 1308 is provided on the top of the mounting base 4. One side of the positioning socket 1308 passes through the mounting base 4 and the positioning insert plate 13. The positioning socket 1308 is fixed to the mounting base 4 by screws.

[0052] Specifically, after assembly, the mounting base 4 is installed on the wall. A fixing hook 12 is fixedly connected to the outside of the mounting column beam 1, allowing the fixing hook 12 to hook onto the outside of the mounting base 4, thus initially limiting the installation of the mounting column beam 1. At this time, positioning plates 13 are provided on one side of each of the last two reinforcing plates 9. The positioning plates 13 are then inserted into one side of the mounting base 4, causing the limiting plates 1301 on both sides of the positioning plates 13 to press against each other. When the limiting plates 1301 move to the adapter slots opened in the mounting base 4, the spring 13... 07. Push the limiting plate 1301 to fix the positioning plate 13. Then, insert the positioning plate 13 and the mounting base 4 through the positioning socket 1308 to further fix the positioning plate 13 and the mounting base 4. Then, install the reinforcing plate 9 on the mounting column beam 1 to complete the overall installation. In order to make the reinforcing plate 9 fit snugly with the mounting column beam 1, rotate the threaded cylinder 1306 to adjust the angle between the first pull plate 1302 and the second pull plate 1304 so that the reinforcing plate 9 can be smoothly installed with the mounting column beam 1.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A prefabricated staircase assembly, comprising two mounting beams (1) and two mounting bases (4) fixed to an external wall, characterized in that: The top of each of the two mounting beams (1) is fixedly connected to a positioning frame (2), and the two mounting bases (4) are respectively set at both ends of the mounting beams (1). Both ends of the mounting beams (1) are fixedly connected to a fixing hook (12), and the fixing hook (12) is hooked to the mounting base (4). Multiple stepped supports (3) are provided between the two mounting beams (1). The two positioning frames (2) are each provided with a positioning mounting base (5) corresponding to the multiple stepped supports (3). The positioning mounting base (5) is used to fix the stepped supports (3) inside. Each of the multiple positioning mounting seats (5) is fixedly connected to a positioning frame (10) on one side. The positioning frame (10) passes through the positioning frame (2) and is rotatably connected to the positioning frame (2). Each of the multiple positioning frames (10) is fixedly connected to a handrail fixing seat (601) on one side. The handrail fixing seat (601) is provided with a handrail column (6) at the top. An adjustment component is provided between the positioning frames (10) on the same side. When installed, the positioning frame (2) is angled. The adjustment component drives the positioning mounting seat (5) and the handrail column (6) on the positioning mounting seat (5) and the handrail fixing seat (601) to adjust their angles so that they are always perpendicular to the ground. The top of the step bracket (3) is provided with a placement groove. A lighting lamp (304) for lighting is fixedly connected inside the placement groove. The adjustment assembly includes two first parallel plates (101), which are rotatably connected to multiple positioning frames (10) via pivot pins. A second parallel plate (102) is rotatably connected between the two ends of the two first parallel plates (101). Multiple first hydraulic telescopic rods (103) are hinged to the outer sides of the two first parallel plates (101), and the first hydraulic telescopic rods (103) are hinged to the positioning frame (2).

2. The prefabricated staircase component according to claim 1, characterized in that: The connector includes a push-press plate (502), and the top of the positioning mounting seat (5) is provided with a mounting groove (501). The push-press plate (502) is located on one side of the mounting groove (501). A fifth threaded rod (503) is rotatably connected to one side of the push-press plate (502). The fifth threaded rod (503) passes through the positioning mounting seat (5) and is threadedly connected to the positioning mounting seat (5). A limit plate (301) is fixedly connected to the bottom of the stepped bracket (3). The limit plate (301) passes through the mounting groove (501) and fits against the inner wall of the positioning mounting seat (5). A barbed clip plate (302) is fixedly connected to the bottom of the stepped bracket (3). A limit hook plate (504) is fixedly connected to the outside of the positioning mounting seat (5). The barbed clip plate (302) is hooked to the limit hook plate (504).

3. A prefabricated staircase component according to claim 1, characterized in that: The bottom of the handrail column (6) extends into the handrail fixing seat (601) and is detachably installed by bolts. Multiple handrail fixing seats (601) are fixedly connected to the bottom of the mounting positioning plate (602). The mounting positioning plate (602) has a limiting slide plate (604) on one side and is fixedly connected to the outside of the positioning frame (2). The mounting positioning plate (602) has a first threaded rod (603) on the other side. The first threaded rod (603) passes through the mounting positioning plate (602) and is threadedly connected to the mounting positioning plate (602). Multiple positioning threaded grooves are opened inside the limiting slide plate (604), and the first threaded rod (603) is adapted to the positioning threaded grooves.

4. A prefabricated staircase component according to claim 3, characterized in that: The top of each of the multiple handrail columns (6) is rotatably connected to a rotating seat (7) and fixed to the handrail column (6) by bolts. Each of the multiple rotating seats (7) has a slot inside. The top of the mounting column beam (1) is provided with a handrail support plate (8). The bottom of the handrail support plate (8) is provided with multiple locking blocks. Each of the multiple locking blocks extends into the slot and is fixed by bolts through the rotating seat (7) and the handrail support plate (8).

5. A prefabricated staircase assembly according to claim 1, characterized in that: It also includes multiple reinforcing plates (9), each of which is disposed between two mounting column beams (1). The bottom of each reinforcing plate (9) is rotatably connected to two or more third threaded rods (903). A fixing plate (904) is fixedly connected to the outside of each third threaded rod (903). A fixing plug (906) is fixedly connected to the bottom of each fixing plate (904). Multiple strip grooves (901) are provided on the top of each mounting column beam (1). The lower part of each strip groove (901) is formed into a circular groove. (902), the strip groove (901) is adapted to the size of the fixed insert plate (904), the fixed insert plate (904) passes through the strip groove (901) and is set inside the circular groove (902), the bottom of the circular groove (902) is provided with a groove, the fixed plug (906) is adapted to the groove, the third threaded rod (903) passes through the mounting column beam (1) and is rotatably connected to the mounting column beam (1), and the outer side of the third threaded rod (903) is threaded with a fixing nut (905).

6. A prefabricated staircase assembly according to claim 5, characterized in that: Two first pull plates (1302) are fixedly connected to the outer sides of the two reinforcing plates (9) near the two mounting bases (4). Two second pull plates (1304) are rotatably connected to the outer sides of the two first pull plates (1302). A threaded cylinder (1306) is connected to the outer side of the first pull plate (1302) through a universal joint. A fourth threaded rod (1305) is threadedly connected to the outer side of the threaded cylinder (1306). The fourth threaded rod (1305) is hinged to the second pull plate (1304). A positioning insert (13) is fixedly connected to one end of each of the two second pull plates (1304). A mounting component for fixing is provided between the positioning insert (13) and the mounting base (4).

7. A prefabricated staircase assembly according to claim 6, characterized in that: The mounting component includes a limiting plate (1301), which is hinged to both sides of the positioning insert plate (13). The mounting base (4) has an adapter groove on one side. The positioning insert plate (13) is inserted into the mounting base (4). A spring (1307) is fixedly connected between the limiting plate (1301) and the positioning insert plate (13). The limiting plate (1301) is engaged in the adapter groove. The mounting base (4) has a positioning socket (1308) on the top. The positioning socket (1308) passes through the mounting base (4) and the positioning insert plate (13) on one side. The positioning socket (1308) is fixed to the mounting base (4) by screws.

8. A building structure, characterized in that, include: A prefabricated staircase assembly as described in any one of claims 1-7.

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