Fabricated stair for building
By designing a prefabricated stair structure with a transmission system, the problem of adjusting the pedal angle one by one in the prior art is solved, and fast and efficient stair assembly is achieved.
Patent Information
- Application Number
- CN202422194282.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-09
AI Technical Summary
When installing pedals, existing prefabricated stairs need to adjust the angle of the pedals one by one, which seriously affects the working efficiency.
A structure including a support arm, a transmission box, a worm gear, a transmission shaft and a worm is designed. The transmission shaft is driven to rotate through a hexagonal column, and the transmission shaft drives the worm and a worm gear to rotate, achieving rapid adjustment of the pedal angle.
With this structure, the angle of the stair pedal can be easily adjusted, which significantly improves the assembly efficiency.
Smart Images
Figure CN222991044U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a prefabricated staircase for buildings, belonging to the technical field of prefabricated staircases. Background Art
[0002] The staircase is an important part of building engineering. The currently used prefabricated staircase has a simple structure. When installing the stair treads, it is necessary to adjust the angles of the treads one by one, which seriously affects the work efficiency. To solve the above problems, a new technical solution is provided. Content of the Utility Model
[0003] The purpose of the utility model is to provide a prefabricated staircase for buildings to solve the problems raised in the above background art.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions: A prefabricated staircase for buildings includes support arms. The support arms are placed symmetrically left and right. There are counterbores and transmission boxes arranged on the support arms. The counterbores are symmetrically opened at both ends of the support arms. The transmission box is integrally formed and connected to the inner ends of the support arms. The transmission box is provided with a storage hole, a worm gear, a transmission shaft and a drainage groove. The storage hole is opened below the rear end of the right transmission box. The worm gears are rotatably connected at equal intervals above the inside of the right transmission box, and a square groove is opened through the left end of the main shaft of the worm gear in the transmission box. The transmission shaft is rotatably connected below the inside of the right transmission box. The drainage groove is integrally formed and connected to the lower part of the inner end of the transmission box.
[0005] Preferably, a hexagonal column is integrally formed at the rear end of the transmission shaft and extends into the storage hole, and worms are integrally formed and connected to the transmission shaft at equal intervals. The worms are meshed with the corresponding worm gears.
[0006] Preferably, treads are placed at equal intervals inside the transmission box. The treads are provided with docking plates and water collecting grooves. The docking plates are fixedly installed at both ends of the treads by screws. The water collecting grooves are opened at equal intervals on the top of the treads.
[0007] Preferably, a square shaft and a smooth shaft are arranged on the docking plate. The square shaft is fixedly installed in the middle of the outer side of the right docking plate by screws, and the square shaft is nested in the square groove. The smooth shaft is fixedly installed in the middle of the outer side of the left docking plate by screws, and the smooth shaft is rotatably connected to the left transmission box.
[0008] Preferably, diversion grooves are symmetrically opened at both ends of the water collecting groove, and the ends of the diversion grooves are directly above the drainage groove.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: at the rear end of the transmission shaft of the utility model, a hexagonal column is integrally formed through and extending into the receiving hole, and the transmission shaft can be easily driven to rotate by the hexagonal column; on the transmission shaft, a worm is integrally formed and connected at equal intervals, and the worm can be easily driven to rotate by the transmission shaft; the worm is meshed and connected with the corresponding worm wheel, and the worm wheel can be easily driven to rotate by the worm; the square shaft is nested in the square groove, and the angle of the pedal can be easily adjusted by the worm wheel; in summary, the utility model can easily assemble and adjust the stairs, effectively improving the work efficiency. Brief Description of the Drawings
[0010] Figure 1 is a schematic structural view of the utility model;
[0011] Figure 2 is a schematic structural view of the transmission box of the utility model;
[0012] Figure 3 is a schematic structural view of the pedal of the utility model;
[0013] In the figure: 1 - support arm; 2 - counterbore; 3 - transmission box; 4 - receiving hole; 5 - worm wheel; 6 - transmission shaft; 7 - drain groove; 8 - square groove; 9 - hexagonal column; 10 - worm; 11 - pedal; 12 - docking plate; 13 - water collecting tank; 14 - square shaft; 15 - optical shaft; 16 - diversion groove. Detailed Embodiment
[0014] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model.
[0015] Such as Figures 1-3As shown in the figure, a prefabricated staircase for buildings includes a support arm 1. The support arms 1 are placed symmetrically left and right. There are counterbores 2 and a transmission box 3 on the support arm 1. The counterbores 2 are symmetrically opened at both ends of the support arm 1. The transmission box 3 is integrally formed and connected to the inner end of the support arm 1. There are a storage hole 4, a worm gear 5, a transmission shaft 6 and a drainage groove 7 on the transmission box 3. The storage hole 4 is opened below the rear end of the right transmission box 3. The worm gears 5 are rotatably connected at equal intervals above the inside of the right transmission box 3. The left end of the main shaft of the worm gear 5 penetrates the transmission box 3 and is provided with a square groove 8. The transmission shaft 6 is rotatably connected below the inside of the right transmission box 3. The drainage groove 7 is integrally formed and connected to the lower part of the inner end of the transmission box 3. The rear end of the transmission shaft 6 penetrates and extends into the storage hole 4 and is integrally formed with a hexagonal column 9. And equally spaced worm shafts 10 are integrally formed on the transmission shaft 6. The worm shafts 10 are meshed with the corresponding worm gears 5. The inner ends of the transmission boxes 3 are placed with treads 11 at equal intervals. There are docking plates 12 and water collecting grooves 13 on the treads 11. The docking plates 12 are installed and fixed at both ends of the treads 11 by screws. The water collecting grooves 13 are equally spaced on the top of the treads 11. There are a square shaft 14 and a smooth shaft 15 on the docking plates 12. The square shaft 14 is installed and fixed in the middle of the outer side of the right docking plate 12 by screws. And the square shaft 14 is nested in the square groove 8. The smooth shaft 15 is installed and fixed in the middle of the outer side of the left docking plate 12 by screws. And the smooth shaft 15 is rotatably connected to the left transmission box 3. Guide grooves 16 are symmetrically opened at both ends of the water collecting groove 13. The ends of the guide grooves 16 are directly above the drainage groove 7.
[0016] Specific usage method: The support arm 1 is installed and fixed at a specified position by cooperating the expansion screw with the counterbore 2. Then, the hexagonal column 9 is rotated to drive the transmission shaft 6 to rotate. The rotation of the transmission shaft 6 drives the worm shaft 10 to rotate. The rotation of the worm shaft 10 drives the worm gear 5 to rotate. The rotation of the worm gear 5 drives the square shaft 14 to rotate. The rotation of the square shaft 14 drives the tread 11 to rotate for angle adjustment; when there is accumulated water on the tread 11, the water will flow into the water collecting groove 13. The water in the water collecting groove 13 flows into the drainage groove 7 through the guide groove 16 for discharge.
[0017] The above is the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the teachings of the present invention, without departing from the principles and spirit of the present invention, the changes, modifications, substitutions and variations made to the implementation manners still fall within the protection scope of the present invention.
Claims
1. A prefabricated staircase for building, comprising a support arm (1), characterized in that: The support arm (1) is arranged symmetrically on the left and right sides. The support arm (1) is provided with a countersunk hole (2) and a transmission box (3). The countersunk hole (2) is symmetrically opened at both ends of the support arm (1). The transmission box (3) is integrally formed and connected to the inner end of the support arm (1). The transmission box (3) is provided with a storage hole (4), a worm wheel (5), a transmission shaft (6) and a drainage groove (7). The storage hole (4) is opened at the lower rear end of the transmission box (3) on the right side. The worm wheel (5) is equidistantly connected to the upper inside of the transmission box (3) on the right side. The left end of the main shaft of the worm wheel (5) penetrates the transmission box (3) and is provided with a square groove (8). The transmission shaft (6) is rotatably connected to the lower inside of the transmission box (3) on the right side. The drainage groove (7) is integrally formed and connected to the lower inside end of the transmission box (3).
2. The assembled staircase for building according to claim 1, characterized in that: The rear end of the transmission shaft (6) passes through and extends into the storage hole (4), and is integrally connected to a hexagonal column (9). A worm (10) is integrally connected to the transmission shaft (6) at equal intervals, and the worm (10) is meshingly connected to a corresponding worm wheel (5).
3. The assembled staircase for building according to claim 1, characterized in that: Pedals (11) are placed equidistantly on the inner end of the transmission box (3); a docking plate (12) and a water collecting trough (13) are provided on the pedal (11); the docking plate (12) is fixed to both ends of the pedal (11) by screws; and the water collecting trough (13) is equidistantly opened on the top of the pedal (11).
4. The assembled staircase for building according to claim 3, characterized in that: The docking plate (12) is provided with a square shaft (14) and an optical shaft (15); the square shaft (14) is fixed to the middle of the outer side of the docking plate (12) on the right side by means of screws, and the square shaft (14) is nested in the square groove (8); the optical shaft (15) is fixed to the middle of the outer side of the docking plate (12) on the left side by means of screws, and the optical shaft (15) is rotatably connected to the transmission box (3) on the left side.
5. The assembled staircase for building according to claim 3, characterized in that: The two ends of the water collecting trough (13) are symmetrically provided with guide grooves (16), and the ends of the guide grooves (16) are located directly above the drainage trough (7).