Fabricated stair with shock insulation function

Abstract

The application discloses an assembled stair with shock insulation function and belongs to the technical field of stairs, which comprises a rectangular frame and a supporting column, the top of the supporting column is fixedly connected with a reinforcing plate through a connecting assembly, one side of the reinforcing plate is fixedly connected with a rectangular block in communication, and the inner wall of one side of the rectangular block is rotationally connected with a first rotating shaft. The application has the advantages of simple structure, improved stability of the reinforcing plate through the connecting assembly, prolonged service life of the extension device, guaranteed stability of the main stair and the auxiliary stair through the fixing assembly and the stabilizing assembly, avoided accidents, automatically unfolded auxiliary stairs through the driving assembly, reduced vibration and noise of the superimposed tread body through the damper, and convenient use.

Description

Technical Field

[0001] This invention belongs to the field of staircase technology, and in particular relates to a prefabricated staircase with vibration isolation function. Background Technology

[0002] A staircase is a component in a building that serves as a vertical transportation link between floors. It is used for communication between floors and when there is a significant difference in elevation. Even in multi-story and high-rise buildings where elevators or escalators are the primary means of vertical transportation, staircases are still required. Although high-rise buildings use elevators as the main vertical transportation tool, staircases are still necessary for escape in case of fire. A staircase consists of continuous flights of steps (also called stair runs), landings (resting platforms), and balustrades. The horizontal projection distance between the lowest and highest steps is the stair length, and the total height of the steps is the stair height. Staircases are already depicted in the images of multi-story buildings on bronze artifacts from the Warring States period in China. In 15th and 16th century Italy, interior staircases were liberated from traditional enclosed spaces, becoming decorative architectural components with varied forms.

[0003] Existing prefabricated staircases involve workers transporting staircase parts to the site, assembling them, and finally forming the staircase for use. This process is not only cumbersome and time-consuming, but also often results in fixed double-story staircases, which are not frequently used in high-rise buildings. Furthermore, staircases that are too high can easily lead to accidents. Therefore, a prefabricated staircase with seismic isolation function is proposed to solve the aforementioned problems. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to solve the shortcomings of existing prefabricated staircases, which require assembly, are cumbersome, time-consuming, and labor-intensive, and are generally fixed, with the upper half of the staircase being infrequently used. Furthermore, the excessive height of the staircase also increases the risk of accidents. Therefore, the present invention proposes a prefabricated staircase with seismic isolation function.

[0005] The technical solution of the present invention is as follows: A prefabricated staircase with vibration isolation function, comprising a rectangular frame and a support column, a reinforcing plate fixedly connected to the top of the support column by a connecting assembly, a connected rectangular block fixedly connected to one side of the reinforcing plate, a first rotating shaft rotatably connected to the inner wall of one side of the rectangular block, a driving assembly for driving the first rotating shaft to rotate being provided inside the reinforcing plate, one end of the first rotating shaft passing through the rectangular block and fixedly fitted with a third cylinder, two symmetrically arranged auxiliary staircases fixedly connected to the outer wall of the third cylinder, and the two auxiliary staircases being located at the ends away from the third cylinder. A first cylinder is fixedly connected to the same structure. A fixing block is fixedly connected to one side of the reinforcing plate. Two main ladders are symmetrically arranged and fixedly connected to one side of the fixing block. A second cylinder is fixedly connected to the end of the two main ladders away from the fixing block. A fixing component for fixing the second cylinder and the first cylinder is provided on one side of the rectangular frame. Multiple overlapping tread bodies are fixedly connected between the two main ladders and the two auxiliary ladders. A stabilizing component for ensuring the stability of the first cylinder is provided on one side of the rectangular frame. A reinforcing component for enhancing the stability of the first cylinder is provided on the top inner wall of the rectangular frame.

[0006] Furthermore, the connecting assembly includes two mounting plates that are fixedly connected to the top of both sides of the support column. Two second bolts are symmetrically arranged through the internal threads of the mounting plates. Four threaded grooves that are symmetrically connected to the second bolts are provided at the bottom of the reinforcing plate for connecting the reinforcing plate and the support column, thereby improving the stability of the reinforcing plate and extending the service life of the device.

[0007] Furthermore, the fixing assembly includes a pull rod that slides through the rectangular frame, the pull rod passing through the second cylinder and the first cylinder, a first bolt threaded through the inner wall of one side of the rectangular frame, a threaded groove with threaded connection to the first bolt at the end of the pull rod near the first bolt, a circular plate fixedly connected at the end of the pull rod away from the first bolt, and a handle fixedly connected to one side of the circular plate for fixing the main ladder and the auxiliary ladder.

[0008] Furthermore, the stabilizing component includes an electric push rod fixedly connected to one side of the rectangular frame. The piston rod of the electric push rod passes through the rectangular frame and is fixedly connected to a round rod. The round rod is used in conjunction with a first cylinder. A circular groove that engages with the round rod is provided on the inner wall of one side of the rectangular frame. Two symmetrically arranged locking holes are provided on one side of the first cylinder. Two symmetrically arranged locking slots are provided on one side of the round rod. A limiting plate that engages with the first cylinder is fixedly connected to the inner wall of the top of the rectangular frame to ensure the stability of the auxiliary ladder and thus prevent accidents.

[0009] Furthermore, the reinforcing component includes a support plate fixedly connected to the inner wall of the top of the rectangular frame. Two symmetrically arranged locking rods slide through the support plate, engaging with locking holes and slots. A common push plate is fixedly connected to one end of the two locking rods. A common spring is fixedly connected between the push plate and the support plate. An L-shaped plate is fixedly connected to one side of the round rod, and a triangular plate is fixedly connected to one end of the L-shaped plate. The end of the push plate near the triangular plate is inclined, and the inclined surface of the triangular plate abuts against the inclined end of the push plate, further improving the stability of the device and preventing it from shaking or loosening during use.

[0010] Furthermore, the drive assembly includes a servo motor fixedly connected to the inner wall of one side of the reinforcing plate, a second rotating shaft fixedly connected to the output shaft of the servo motor, a second gear fixedly sleeved on the outer wall of the second rotating shaft, and a first gear fixedly sleeved on the outer wall of the first rotating shaft. The first gear and the second gear mesh to drive the auxiliary ladder to rotate and automatically realize the function of the auxiliary ladder unfolding.

[0011] Furthermore, two symmetrically arranged positioning rods are fixedly connected to one side of the circular plate, and two symmetrically arranged positioning grooves that engage with the positioning rods are provided on one side of the rectangular frame to ensure the stability of the circular plate and prevent it from easily shaking.

[0012] Furthermore, it also includes a stacked pedal. The stacked pedal body includes a first pedal body and a second pedal body arranged perpendicularly to each other. A cavity is provided on one side of the first pedal body and the top of the second pedal body. A sliding plate is slidably connected inside the cavity. Multiple dampers are fixedly connected between the sliding plate and the cavity. Sound-absorbing cotton is provided inside the cavity, which further improves the stability of the device. The damper setting enables the stacked pedal body to reduce vibration and noise.

[0013] The beneficial effects of this invention are as follows: The features of this invention are: 1. In this invention, the device is in a retractable state, which facilitates transportation, thereby reducing the workload of workers, greatly reducing the difficulty of work, and reducing working time. There is no need to assemble various parts; simply place the device in a suitable position, rotate the main and auxiliary ladders, which rotate around the pull rod as the pivot until the reinforcing plate is in a horizontal position, then stop. Move the support column out of the rectangular frame, and use the second bolt to fix the reinforcing plate and mounting plate together, completing the installation of the device. The process is simple, time-saving, and labor-saving. 2. In this invention, when going up and down the second floor normally, the main and auxiliary ladders can be used. At this time, the second step body acts as a step, and there is no third-floor staircase to prevent children from climbing to excessive heights and causing accidents. When it is necessary to go up to the third floor, first unscrew the first bolt to release the first bolt from the pull rod. 3. In this invention, the pull rod is pulled out laterally using the handle, so that the pull rod no longer passes through the interior of the first cylinder. At this time, the auxiliary ladder is in an active state. Start the servo motor; the output shaft of the servo motor drives the second rotating shaft to rotate, the second rotating shaft drives the second gear to rotate, and the second gear drives... The first gear rotates, driving the first shaft to rotate, which in turn drives the third cylinder to rotate. The third cylinder then drives the auxiliary ladder to rotate, which rotates around the third cylinder as its axis until it contacts the limiting plate. At this point, the sliding plate acts as a foot pedal. 4. In this invention, activating the electric push rod causes its piston rod to move the round rod laterally. The round rod then moves the L-shaped plate laterally. The round rod passes through the interior of the first cylinder and engages with the round groove, thus fixing the first cylinder and preventing it from shaking. Simultaneously, the L-shaped plate moves the triangular plate laterally, which in turn moves the push plate laterally. The push plate compresses the spring and drives the locking rod to move laterally. The locking rod inserts into the locking hole and engages with the locking slot, further improving the stability of the device. The damper design allows the overlapping tread body to reduce vibration and noise. 5. The invention has a simple structure. The connecting components enhance the stability of the reinforcing plate and extend the service life of the device. The fixing and stabilizing components ensure the stability of the main ladder and the auxiliary ladder, thereby avoiding accidents. The driving components automatically unfold the auxiliary ladder. The damper design allows the overlapping tread body to reduce vibration and noise, making it easy to use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the main ladder and auxiliary ladder in this invention;

[0017] Figure 4 This is a cross-sectional view of the reinforcing plate in this invention;

[0018] Figure 5 This is a schematic diagram of the structure of the auxiliary ladder when it is raised in this invention;

[0019] Figure 6 This is a schematic diagram of the handle structure in this invention;

[0020] Figure 7 This is a schematic diagram of the structure when the first cylinder and the round rod are connected in this invention;

[0021] Figure 8 This is a schematic diagram of the structure of the round rod and the limiting plate in this invention;

[0022] Figure 9 This is a three-dimensional diagram of the device in its contracted state in this invention;

[0023] Figure 10 This is an exploded view of the overlapping pedal in this invention;

[0024] In the diagram: 1. Electric push rod; 2. Main ladder; 3. Reinforcing plate; 4. Support column; 5. Secondary ladder; 6. First bolt; 7. Rectangular frame; 8. Stacking tread body; 801. First tread body; 802. Sliding plate; 803. Second tread body; 804. Damper; 805. Cavity; 9. First cylinder; 10. Pull rod; 11. Second cylinder; 12. Handle; 13. Third cylinder; 14. Rectangular block; 15. Fixing element. 16. First gear; 17. First shaft; 18. Second shaft; 19. Second gear; 20. Servo motor; 21. Second bolt; 22. Mounting plate; 23. Round plate; 24. Positioning rod; 25. Positioning groove; 26. Locking hole; 27. Push plate; 28. Spring; 29. ​​Locking rod; 30. Triangular plate; 31. Support plate; 32. L-shaped plate; 33. Round rod; 34. Locking groove; 35. Limiting plate; 36. Round groove. Detailed Implementation

[0025] The specific technical solution of the present invention will be further described in detail below with reference to specific examples. Example

[0026] As shown in the figure, the prefabricated staircase with vibration isolation function of the present invention includes a rectangular frame 7 and a support column 4. A reinforcing plate 3 is fixedly connected to the top of the support column 4 via a connecting assembly. A connected rectangular block 14 is fixedly connected to one side of the reinforcing plate 3. A first rotating shaft 17 is rotatably connected to the inner wall of one side of the rectangular block 14. A driving assembly for driving the first rotating shaft 17 to rotate is provided inside the reinforcing plate 3. A third cylinder 13 is fixedly fitted through the rectangular block 14 at one end of the first rotating shaft 17. Two symmetrically arranged auxiliary stairs 5 are fixedly connected to the outer wall of the third cylinder 13. The two auxiliary stairs 5 are located away from the third cylinder 13. One end is fixedly connected to the same first cylinder 9. A fixing block 15 is fixedly connected to one side of the reinforcing plate 3. Two main ladders 2 are fixedly connected to one side of the fixing block 15. The ends of the two main ladders 2 away from the fixing block 15 are fixedly connected to the same second cylinder 11. A fixing component for fixing the second cylinder 11 and the first cylinder 9 is provided on one side of the rectangular frame 7. Multiple overlapping tread bodies 8 are fixedly connected between the two main ladders 2 and the two auxiliary ladders 5. A stabilizing component for ensuring the stability of the first cylinder 9 is provided on one side of the rectangular frame 7. A reinforcing component for strengthening the stability of the first cylinder 9 is provided on the top inner wall of the rectangular frame 7.

[0027] Furthermore, a prefabricated staircase with vibration isolation function has a composite tread. The composite tread body 8 includes a first tread body 801 and a second tread body 803 arranged perpendicularly to each other. A cavity 805 is provided on one side of the first tread body 801 and the top of the second tread body 803. A sliding plate 802 is slidably connected inside the cavity 805. A plurality of dampers 804 are fixedly connected between the sliding plate 802 and the cavity 805. Sound-absorbing cotton is provided inside the cavity 805, which further improves the stability of the device. The dampers 804 enable the composite tread body 8 to reduce vibration and noise. Example

[0028] As shown in the figure, the prefabricated staircase with vibration isolation function of the present invention includes a rectangular frame 7 and a support column 4. A reinforcing plate 3 is fixedly connected to the top of the support column 4 by a connecting assembly. The connecting assembly includes two mounting plates 22 fixedly connected to the top of both sides of the support column 4. Two second bolts 21 are symmetrically arranged and threaded through the interior of the mounting plates 22. Four threaded grooves, symmetrically arranged in pairs, are provided at the bottom of the reinforcing plate 3 and threadedly connected to the second bolts 21, for connecting the reinforcing plate 3 and the support column 4, thereby improving the stability of the reinforcing plate 3 and extending the service life of the device. A connected rectangular block 14 is fixedly connected to one side of the reinforcing plate 3. A first rotating shaft 17 is rotatably connected to the inner wall of one side of the rectangular block 14. Inside the reinforcing plate 3, a drive assembly for driving the first rotating shaft 17 to rotate is provided. The drive assembly includes a servo motor 20 fixedly connected to the inner wall of one side of the reinforcing plate 3. A second rotating shaft 18 is fixedly connected to the output shaft of the servo motor 20. A second gear 19 is fixedly sleeved on the outer wall of the second rotating shaft 18. A first gear 16 is fixedly sleeved on the outer wall of the first rotating shaft 17. The first gear 16 and the second gear 19 mesh to drive the auxiliary ladder 5 to rotate, automatically realizing the function of the auxiliary ladder 5 unfolding. A rectangular block 14 passes through one end of the first rotating shaft 17 and a third cylinder 13 is fixedly sleeved thereon. Two symmetrically arranged auxiliary ladders 5 are fixedly connected to the outer wall of the third cylinder 13. The two auxiliary ladders 5 are far from the third cylinder 13. One end of the rectangular frame 7 is fixedly connected to the same first cylinder 9. A fixing block 15 is fixedly connected to one side of the reinforcing plate 3. Two main ladders 2 are symmetrically arranged and fixedly connected to one side of the fixing block 15. The ends of the two main ladders 2 away from the fixing block 15 are fixedly connected to the same second cylinder 11. A fixing assembly for fixing the second cylinder 11 and the first cylinder 9 is provided on one side of the rectangular frame 7. The fixing assembly includes a pull rod 10 that slides through the rectangular frame 7. The pull rod 10 passes through the second cylinder 11 and the first cylinder 9. A first bolt 6 is threaded through the inner wall of one side of the rectangular frame 7. A threaded groove is opened at the end of the pull rod 10 near the first bolt 6, which is threaded to the first bolt 6. The end of the pull rod 10 away from the first bolt 6 is fixedly connected to... A circular plate 23 is attached, and a handle 12 is fixedly connected to one side of the circular plate 23 for fixing the main ladder 2 and the auxiliary ladder 5. Multiple overlapping footplate bodies 8 are fixedly connected between the two main ladders 2 and the two auxiliary ladders 5. A stabilizing component for ensuring the stability of the first cylinder 9 is provided on one side of the rectangular frame 7. The stabilizing component includes an electric push rod 1 fixedly connected to one side of the rectangular frame 7. The piston rod of the electric push rod 1 passes through the rectangular frame 7 and is fixedly connected to a circular rod 33. The circular rod 33 is used in conjunction with the first cylinder 9. A circular groove 36 is opened on the inner wall of one side of the rectangular frame 7 to engage with the circular rod 33. Two symmetrically arranged locking holes 26 are opened on one side of the first cylinder 9, and two symmetrically arranged locking slots 34 are opened on one side of the circular rod 33.A limiting plate 35, which engages with the first cylinder 9, is fixedly connected to the top inner wall of the rectangular frame 7 to ensure the stability of the auxiliary ladder 5 and prevent accidents. A reinforcing component for enhancing the stability of the first cylinder 9 is provided on the top inner wall of the rectangular frame 7. The reinforcing component includes a support plate 31 fixedly connected to the top inner wall of the rectangular frame 7. Two symmetrically arranged locking rods 29 slide through the support plate 31. The locking rods 29 engage with locking holes 26 and locking grooves 34. One end of each locking rod 29 is fixedly connected to the same push plate 27. A common connecting rod is fixedly connected between the push plate 27 and the support plate 31. A spring 28 is attached to one side of the round rod 33, and an L-shaped plate 32 is fixedly connected to one end of the L-shaped plate 32. A triangular plate 30 is fixedly connected to one end of the push plate 27 near the triangular plate 30. The inclined surface of the triangular plate 30 abuts against the inclined end of the push plate 27, further improving the stability of the device and preventing shaking or loosening during use. Two symmetrically arranged positioning rods 24 are fixedly connected to one side of the round plate 23. Two symmetrically arranged positioning grooves 25 are provided on one side of the rectangular frame 7 to engage with the positioning rods 24, ensuring the stability of the round plate 23 and preventing it from easily shaking.

[0029] Furthermore, it also includes a stacked pedal. The stacked pedal body 8 includes a first pedal body 801 and a second pedal body 803 arranged perpendicularly to each other. A cavity 805 is provided on one side of the first pedal body 801 and the top of the second pedal body 803. A sliding plate 802 is slidably connected inside the cavity 805. A plurality of dampers 804 are fixedly connected between the sliding plate 802 and the cavity 805. Sound-absorbing cotton is provided inside the cavity 805, which further improves the stability of the device. The dampers 804 enable the stacked pedal body 8 to reduce vibration and noise.

[0030] The working principle of this invention is as follows: During use, the device is in a retracted state, facilitating transportation and reducing the workload of workers. This significantly reduces the difficulty and time required for work. Assembling various parts is no longer necessary; simply place the device in a suitable position and rotate the main ladder 2 and auxiliary ladder 5. The main ladder 2 and auxiliary ladder 5 rotate around the pull rod 10 as their pivot until the reinforcing plate 3 is in a horizontal position. Then, remove the support column 4 from the inside of the rectangular frame 7 and use the second bolt 21 to fix the reinforcing plate 3 and mounting plate 22 together, completing the installation. The process is simple, time-saving, and labor-saving. For normal ups and downs to the second floor, the main ladder 2 and auxiliary ladder 5 can be used. The second step body 803 serves as a step, and there is no third-floor staircase to prevent children from climbing to excessive heights and causing accidents. When it is necessary to ascend to the third floor, first unscrew the first bolt 6 to release the fixing of the first bolt 6 to the pull rod 10. Use the handle 12 to pull the pull rod 10 horizontally, so that the pull rod 10 no longer passes through the inside of the first cylinder 9. At this time, the auxiliary ladder 5 is in an active state, and the servo motor 20 is activated. The output shaft drives the second rotating shaft 18 to rotate, the second rotating shaft 18 drives the second gear 19 to rotate, the second gear 19 drives the first gear 16 to rotate, the first gear 16 drives the first rotating shaft 17 to rotate, the first rotating shaft 17 drives the third cylinder 13 to rotate, the third cylinder 13 drives the auxiliary ladder 5 to rotate, and the auxiliary ladder 5 rotates around the third cylinder 13 as its axis until the auxiliary ladder 5 contacts the limit plate 35. At this time, the sliding plate 802 acts as a foot pedal, activating the electric push rod 1. The piston rod of the electric push rod 1 drives the round rod 33 to move laterally, and the round rod 33 drives... The L-shaped plate 32 moves laterally, and the round rod 33 passes through the interior of the first cylinder 9 and engages with the round groove 36, fixing the first cylinder 9 again and preventing it from shaking. At the same time, the L-shaped plate 32 drives the triangular plate 30 to move laterally, and the triangular plate 30 drives the push plate 27 to move laterally. The push plate 27 compresses the spring 28 and drives the locking rod 29 to move laterally. The locking rod 29 inserts into the locking hole 26 and engages with the locking groove 34, further improving the stability of the device. The damper 804 makes the overlapping pedal body 8 have the effect of reducing vibration and noise.

[0031] Furthermore, the working principle and wiring method of the electric actuator 1 and the servo motor 20 in this invention are conventional methods or common knowledge, and will not be described in detail here.

Claims

1. A prefabricated staircase with seismic isolation function, characterized in that, The prefabricated staircase includes a support column (4) and a rectangular frame (7). A connecting component is placed on the top of the support column (4). A reinforcing plate (3) is fixedly connected to the support column (4) through the connecting component placed on the top. A communicating rectangular block (14) is fixedly connected to one side of the reinforcing plate (3). A first rotating shaft (17) is rotatably connected to the inner wall of one side of the rectangular block (14). Inside the reinforcing plate (3), there is a drive assembly for driving the first rotating shaft (17) to rotate. One end of the first rotating shaft (17) passes through the rectangular block (14) and is fixedly fitted with the third cylinder (13). Two symmetrically arranged secondary ladders (5) are fixedly connected to the outer wall of the third cylinder (13). The first cylinder (9) is fixedly connected to the end of the two secondary ladders (5) away from the third cylinder (13). Among them, a fixing block (15) is fixedly connected to one side of the reinforcing plate (3), and two main ladders (2) are fixedly connected to one side of the fixing block (15). A second cylinder (11) is fixedly connected to one end of the two main ladders (2) away from the fixing block (15). A fixing component for fixing the second cylinder (11) and the first cylinder (9) is arranged on one side of the rectangular frame (7). A stabilizing component for fixing the first cylinder (9) is provided on the rectangular frame (7). A reinforcing component for fixing the first cylinder (9) is provided on the top inner wall of the rectangular frame (7).

2. A prefabricated staircase with seismic isolation function according to claim 1, characterized in that, The connecting assembly includes two mounting plates (22) that are fixedly connected to the top of both sides of the support column (4). Two second bolts (21) are symmetrically arranged through the internal threads of the mounting plates (22). Four threaded grooves that are symmetrically arranged in pairs and threadedly connected to the second bolts (21) are provided at the bottom of the reinforcing plate (3).

3. A prefabricated staircase with seismic isolation function according to claim 1, characterized in that, The fixing assembly includes a pull rod (10) that slides through a rectangular frame (7). The pull rod (10) passes through a second cylinder (11) and a first cylinder (9). A first bolt (6) is threaded through the inner wall of one side of the rectangular frame (7). A threaded groove is provided at the end of the pull rod (10) near the first bolt (6) for threaded connection with the first bolt (6). A circular plate (23) is fixedly connected at the end of the pull rod (10) away from the first bolt (6). A handle (12) is fixedly connected to one side of the circular plate (23).

4. A prefabricated staircase with seismic isolation function according to claim 1, characterized in that, The stabilizing component includes an electric push rod (1) fixedly connected to one side of a rectangular frame (7). The piston rod of the electric push rod (1) passes through the rectangular frame (7) and is fixedly connected to a round rod (33). The round rod (33) is used in conjunction with a first cylinder (9). A round groove (36) is provided on the inner wall of one side of the rectangular frame (7) to engage with the round rod (33). Two symmetrically arranged locking holes (26) are provided on one side of the first cylinder (9). Two symmetrically arranged locking slots (34) are provided on one side of the round rod (33). A limiting plate (35) that engages with the first cylinder (9) is fixedly connected to the inner wall of the top of the rectangular frame (7).

5. A prefabricated staircase with seismic isolation function according to claim 4, characterized in that, The reinforcing component includes a support plate (31) fixedly connected to the inner wall of the top of the rectangular frame (7). Two symmetrically arranged locking rods (29) slide through the inside of the support plate (31). The locking rods (29) engage with locking holes (26) and locking grooves (34). A push plate (27) is fixedly connected to one end of the two locking rods (29). A spring (28) is fixedly connected between the push plate (27) and the support plate (31). An L-shaped plate (32) is fixedly connected to one side of the round rod (33). A triangular plate (30) is fixedly connected to one end of the L-shaped plate (32).

6. A prefabricated staircase with seismic isolation function according to claim 5, characterized in that, The push plate (27) is inclined at one end near the triangular plate (30), and the inclined surface of the triangular plate (30) abuts against the inclined end of the push plate (27).

7. A prefabricated staircase with seismic isolation function according to claim 1, characterized in that, The drive assembly includes a servo motor (20) fixedly connected to the inner wall of one side of the reinforcing plate (3). A second rotating shaft (18) is fixedly connected to the output shaft of the servo motor (20). A second gear (19) is fixedly sleeved on the outer wall of the second rotating shaft (18). A first gear (16) is fixedly sleeved on the outer wall of the first rotating shaft (17). The first gear (16) and the second gear (19) are meshed together.

8. A prefabricated staircase with seismic isolation function according to claim 3, characterized in that, Two symmetrically arranged positioning rods (24) are fixedly connected to one side of the circular plate (23), and two symmetrically arranged positioning grooves (25) that engage with the positioning rods (24) are provided on one side of the rectangular frame (7).

9. A prefabricated staircase with seismic isolation function according to claim 1, characterized in that, It also includes a stacked pedal, which includes multiple stacked pedal bodies (8). The multiple stacked pedal bodies (8) are fixedly arranged between the two main ladders (2) and the two auxiliary ladders (5). The stacked pedal body (8) includes a first pedal body (801) and a second pedal body (803) arranged perpendicularly to each other. A cavity (805) is provided on one side of the first pedal body (801) and the top of the second pedal body (803). A sliding plate (802) is slidably connected inside the cavity (805). Multiple dampers (804) are fixedly connected between the sliding plate (802) and the cavity (805). Sound-absorbing cotton is provided inside the cavity (805).

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