Anti-seismic prefabricated stair
By introducing support and buffer mechanisms into precast stairs, especially the combined design of semi-rigid support columns and cross buffer bars, the problem of damage to precast stairs under impact forces is solved, achieving effective buffering and recovery functions and improving the seismic performance of stairs.
Patent Information
- Application Number
- CN202520346544.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing prefabricated stairs are easily damaged when subjected to downward impact forces, lacking effective cushioning performance.
The design employs a combination of support and buffer mechanisms, including semi-rigid support columns and cross-arranged buffer rods and elastic buffer components. The support mechanism provides stable support under normal conditions, while the buffer mechanism provides elastic support force during impact. The cross-arranged buffer rods and elastic buffer components enable micro-movement and reset of the pedal.
It provides stable support under normal conditions, effectively buffers the impact force from above, ensures the reliability and safety of pedal use, and returns to its original position after the impact.
Smart Images
Figure CN223880655U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of prefabricated stairs, in particular to an anti-seismic prefabricated stair. BACKGROUND
[0002] In the modern construction industry, prefabricated stairs are widely used in various construction projects due to their convenience in construction, effective shortening of construction period, and reduction of on-site wet work. Currently, with the frequent occurrence of natural disasters such as earthquakes and the highlighting of personnel safety issues, the anti-seismic performance of building structures has attracted attention, and the ability of prefabricated stairs to withstand vibration and heavy impact has been increasingly valued. Currently, prefabricated stairs are mostly composed of stair plates, which are usually connected by combined bolts, welding, clamping, etc. Although this type of stair is convenient to disassemble and assemble, the stair plates are easily damaged when a sudden event such as a heavy object impacting from top to bottom occurs, and the stair plates may be broken due to the impact.
[0003] Therefore, how to make the stair have the ability to withstand the impact from top to bottom, i.e., the stair has a buffering performance, is a problem to be solved. CONTENT OF THE INVENTION
[0004] In order to make the stair have the ability to withstand the impact from top to bottom, the present application provides an anti-seismic prefabricated stair.
[0005] The anti-seismic prefabricated stair provided by the present application adopts the following technical solution:
[0006] An anti-seismic prefabricated stair, comprising a base, a plurality of tread plates are installed on the base, a bottom plate is installed on the base corresponding to each tread plate, a support mechanism and a buffer mechanism are installed on each bottom plate, the support mechanism is configured to support the corresponding tread plate and enable the corresponding tread plate to have a downward micro-motion ability;
[0007] The buffer mechanism comprises a first buffer rod and a second buffer rod located between the tread plate and the bottom plate, the first buffer rod and the second buffer rod are cross-connected and hingedly connected at the cross position, the bottom end of the first buffer rod is slidingly connected to the bottom plate, the top end of the first buffer rod is hingedly connected to the tread plate, the top end of the second buffer rod is slidingly connected to the tread plate, the bottom end of the second buffer rod is hingedly connected to the bottom plate, and the first buffer rod and the second buffer rod are jointly connected with an elastic buffer assembly, which provides elastic support force for the tread plate through the first buffer rod and the second buffer rod.
[0008] By adopting the technical scheme, in normal state, when the pedal is stepped on, the supporting mechanism provides supporting force for the pedal, and the pedal does not slightly move to ensure reliable use of the pedal; when a heavy object falls from top to bottom on the upper end of the pedal, the pedal is impacted, the pedal slightly moves downward, the elastic buffer assembly provides elastic supporting force for the pedal through the first buffer rod and the second buffer rod, that is, the heavy object is buffered, and after the impact ends, the elastic buffer assembly resets the pedal through the first buffer rod and the second buffer rod.
[0009] In a specific implementable scheme, the elastic buffer assembly comprises a buffer spring, the first buffer rod is provided with a first connecting plate, the second buffer rod is provided with a second connecting plate, the buffer spring is located between the first connecting plate and the second connecting plate, one end of the buffer spring is connected to the first connecting plate, and the other end of the buffer spring is connected to the second connecting plate.
[0010] By adopting the technical scheme, when the pedal slightly moves downward, the first buffer rod and the second buffer rod slightly move, and the buffer spring is stretched.
[0011] In a specific implementable scheme, the connecting position of the first buffer rod and the second buffer rod is formed as a hinge point, the distance between the top end of the first buffer rod and the hinge point is greater than the distance between the bottom end of the first buffer rod and the hinge point, and the second buffer rod is symmetrically arranged and has the same structure as the first buffer rod.
[0012] In a specific implementable scheme, the distance between the top end of the second buffer rod and the hinge point is 1.5 to 2 times the distance between the bottom end of the second buffer rod and the hinge point.
[0013] In a specific implementable scheme, the bottom plate is provided with a sliding groove, the first buffer rod comprises a sliding block close to one end of the bottom plate, and the sliding block is slidingly connected to the sliding groove.
[0014] By adopting the technical scheme, when the pedal bears impact force, the first buffer rod moves, and the sliding block is displaced in the sliding groove.
[0015] In a specific implementable scheme, the sliding groove is provided with a damping spring, the damping spring is connected with a buffer pressing plate, when the pedal slightly moves downward, the sliding block moves to press the buffer pressing plate, and the damping spring is compressed.
[0016] By adopting the technical scheme, when the pedal slightly moves downward, the sliding block is displaced, the sliding block presses the buffer pressing plate, the damping spring is compressed, and the damping spring provides buffer force for the sliding block.
[0017] In one specific implementation, the support mechanism comprises a plurality of semi-rigid support columns, each of the semi-rigid support columns is located between the base plate and the tread plate, the top end of each of the semi-rigid support columns is connected to the tread plate, and the bottom end of each of the semi-rigid support columns is connected to the base plate.
[0018] By using the above technical solution, in normal state, as long as the semi-rigid support columns are not subjected to force greater than the critical value of material deformation, the plurality of semi-rigid support columns will maintain to provide support force for the tread plate to ensure the position of the tread plate stable; when the tread plate is subjected to greater force, the semi-rigid support columns will be deformed to cause the tread plate to move slightly downward.
[0019] In one specific implementation, the base is provided with a support column corresponding to each base plate, and each of the support columns is connected to the corresponding base plate.
[0020] By using the above technical solution, the support columns support the base plates to ensure the structure of the base plates stable.
[0021] In summary, the present application has at least one of the following beneficial technical effects:
[0022] 1. In normal state, when the tread plate is stepped on, the support mechanism will provide support force for the tread plate, and the tread plate will not move slightly to ensure the use of the tread plate reliable; when a heavy object falls on the upper end of the tread plate from top to bottom, the tread plate is impacted, the tread plate will move slightly downward, the elastic buffer assembly provides elastic support force for the tread plate through the first buffer rod and the second buffer rod, i.e. buffers the heavy object, and after the impact ends, the elastic buffer assembly resets the tread plate through the first buffer rod and the second buffer rod;
[0023] 2. When the tread plate is subjected to force and moves slightly downward, the sliding block is displaced, the sliding block presses the buffer pressing plate, and the shock-absorbing spring is compressed to provide buffer force for the sliding block;
[0024] 3. In normal state, as long as the semi-rigid support columns are not subjected to force greater than the critical value of material deformation, the plurality of semi-rigid support columns will maintain to provide support force for the tread plate to ensure the position of the tread plate stable; when the tread plate is subjected to greater force, the semi-rigid support columns will be deformed to cause the tread plate to move slightly downward. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 is a structural schematic view of an anti-seismic prefabricated stair according to an embodiment of the present application.
[0026] Figure 2 is a sectional view for embodying the support column.
[0027] Figure 3 is a structural schematic view for embodying the buffer mechanism.
[0028] Explanation of reference signs: 1, base; 11, stepping plate; 12, bottom plate; 121, sliding groove; 13, support column; 2, support mechanism; 21, semi-rigid support column; 3, buffer mechanism; 31, first buffer rod; 311, sliding block; 32, second buffer rod; 33, elastic buffer assembly; 331, buffer spring; 332, first connecting plate; 333, second connecting plate; 4, damping spring; 41, buffer pressing plate. DETAILED DESCRIPTION
[0029] The application will be further described in detail below with reference to the accompanying drawings.
[0030] The application discloses an anti-shock prefabricated staircase. It can withstand the impact from top to bottom.
[0031] Reference Figure 1 and Figure 2 The anti-shock prefabricated staircase comprises a base 1, a plurality of stepping plates 11 are installed on the base 1, the stepping plates 11 are used for being stepped on by users, and a bottom plate 12 is installed on the base 1 corresponding to each stepping plate 11. In order to ensure the structural stability of the bottom plate 12, a support column 13 is installed on the base 1 corresponding to each bottom plate 12, and the top end of each support column 13 is connected to the corresponding bottom plate 12. In order to ensure that the stepping plate 11 has the ability to resist impact while ensuring the structural stability of the stepping plate 11 for normal stepping by users, a support mechanism 2 and a buffer mechanism 3 are installed on each bottom plate 12, the support mechanism 2 can support the corresponding stepping plate 11 in normal state and enable the stepping plate 11 to have a downward micro-motion ability when subjected to a force from top to bottom, and the buffer mechanism 3 can provide an elastic supporting force when the stepping plate 11 is micro-moved. Of course, in order to ensure that the stepping plate 11 can be micro-moved, the stepping plate 11 and the base 1 are in sliding connection, but the movable distance of the stepping plate 11 is small.
[0032] Reference Figure 3 The support mechanism 2 comprises a plurality of semi-rigid support columns 21, the plurality of semi-rigid support columns 21 are located between the bottom plate 12 and the stepping plate 11, and the plurality of semi-rigid support columns 21 are uniformly arranged along the peripheral direction of the bottom plate 12, the top end of each semi-rigid support column 21 is connected to the stepping plate 11, and the bottom end of each semi-rigid support column 21 is connected to the bottom plate 12. The semi-rigid support column 21 has high strength, can have a certain deformation ability when subjected to force, and can restore after deformation when the load time is not long or the load does not exceed a certain value, and the material of the semi-rigid support column 21 is, for example, glass fiber reinforced semi-rigid material and steel.
[0033] Reference Figure 3, the buffer mechanism 3 includes a first buffer rod 31 and a second buffer rod 32 between the pedal plate 11 and the bottom plate 12, the first buffer rod 31 and the second buffer rod 32 are cross arranged and hingedly connected at the cross position, the first buffer rod 31 is slidably connected to the bottom plate 12 at the bottom end, the second buffer rod 32 is slidably connected to the pedal plate 11 at the top end, and the first buffer rod 31 and the second buffer rod 32 are jointly connected with an elastic buffer assembly 33, the elastic buffer assembly 33 provides elastic support force for the pedal plate 11 through the first buffer rod 31 and the second buffer rod 32.
[0034] With reference to Figure 3 , specifically, the elastic buffer assembly 33 includes a buffer spring 331, the first buffer rod 31 is provided with a first connecting plate 332, the second buffer rod 32 is provided with a second connecting plate 333, the buffer spring 331 is located between the first connecting plate 332 and the second connecting plate 333, one end of the buffer spring 331 is connected to the first connecting plate 332, and the other end is connected to the second connecting plate 333. The connecting position of the first buffer rod 31 and the second buffer rod 32 forms a hinge point, the distance between the top end of the first buffer rod 31 and the hinge point is greater than the distance between the bottom end of the first buffer rod 31 and the hinge point; more specifically, the second buffer rod 32 is the same structure as the first buffer rod 31 and is symmetrically arranged. The distance between the top end of the second buffer rod 32 and the hinge point is 1.5-2 times the distance between the bottom end of the second buffer rod 32 and the hinge point, in this embodiment, the distance between the top end of the second buffer rod 32 and the hinge point is twice the distance between the bottom end of the second buffer rod 32 and the hinge point.
[0035] With reference to Figure 3 , the structure of the sliding connection of the first buffer rod 31 and the bottom plate 12 is the same as that of the sliding connection of the second buffer rod 32 and the pedal plate 11, taking the structure of the sliding connection of the first buffer rod 31 and the bottom plate 12 as an example: the bottom plate 12 is provided with a dovetail type sliding groove 121, the first buffer rod 31 includes a dovetail type sliding block 311 close to one end of the bottom plate 12, and the sliding block 311 is slidably connected to the sliding groove 121. In order to improve the buffering capacity, the sliding groove 121 is provided with a damping spring 4, the damping spring 4 is connected with a buffer pressing plate 41, and the buffer pressing plate 41 is located at the right side of the sliding block 311, when the pedal plate 11 is slightly moved downward, the sliding block 311 moves to press the buffer pressing plate 41, and the damping spring 4 is compressed.
[0036] The implementation principle of the anti-seismic prefabricated stair of the embodiment of the application is as follows: in normal state, when the tread plate 11 is stepped on, the plurality of support columns 13 provide support force for the tread plate 11, and the tread plate 11 does not slightly move to ensure the use reliability of the tread plate 11; when the tread plate 11 is subjected to a large impact force from top to bottom, the support columns 13 elastically deform, the tread plate 11 slightly moves downward, the first buffer rod 31 and the second buffer rod 32 move, the top end of the first buffer rod 31 and the top end of the second buffer rod 32 move away from each other, the buffer spring 331 is stretched, the buffer spring 331 provides elastic support force for the tread plate 11 through the first buffer rod 31 and the second buffer rod 32, and in addition, the sliding block 311 also presses the buffer pressing plate 41, the damping spring 4 is compressed, and the damping spring 4 provides buffer force for the sliding block 311.
[0037] The above are preferred embodiments of the application, and do not limit the protection scope of the application, so: equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.
Claims
1. An anti-seismic prefabricated stair, characterized in that: The base (1) is provided with a plurality of stepping plates (11), and a bottom plate (12) is arranged on the base (1) corresponding to each stepping plate (11); a supporting mechanism (2) and a buffering mechanism (3) are arranged on each bottom plate (12); the supporting mechanism (2) is configured to support the corresponding stepping plate (11) and enable the corresponding stepping plate (11) to have a downward micro-motion capability; The buffering mechanism (3) comprises a first buffering rod (31) and a second buffering rod (32) arranged between the stepping plate (11) and the bottom plate (12); the first buffering rod (31) and the second buffering rod (32) are arranged in a cross manner and are hingedly connected at the cross position; the bottom end of the first buffering rod (31) is slidably connected to the bottom plate (12), and the top end of the first buffering rod (31) is hingedly connected to the stepping plate (11); the top end of the second buffering rod (32) is slidably connected to the stepping plate (11), and the bottom end of the second buffering rod (32) is hingedly connected to the bottom plate (12); the first buffering rod (31) and the second buffering rod (32) are jointly connected with an elastic buffering assembly (33); the elastic buffering assembly (33) provides elastic supporting force for the stepping plate (11) through the first buffering rod (31) and the second buffering rod (32).
2. The anti-seismic prefabricated stair according to claim 1, characterized in that: The elastic buffering assembly (33) comprises a buffering spring (331); the first buffering rod (31) is provided with a first connecting plate (332); the second buffering rod (32) is provided with a second connecting plate (333); the buffering spring (331) is arranged between the first connecting plate (332) and the second connecting plate (333); one end of the buffering spring (331) is connected to the first connecting plate (332), and the other end of the buffering spring (331) is connected to the second connecting plate (333).
3. The anti-seismic prefabricated stair according to claim 2, characterized in that: The connecting position of the first buffering rod (31) and the second buffering rod (32) is formed as a hinge point; the distance between the top end of the first buffering rod (31) and the hinge point is greater than the distance between the bottom end of the first buffering rod (31) and the hinge point; the second buffering rod (32) has the same structure as the first buffering rod (31) and is arranged in a symmetrical manner.
4. The anti-seismic prefabricated stair according to claim 3, characterized in that: The distance between the top end of the second buffering rod (32) and the hinge point is 1.5-2 times the distance between the bottom end of the second buffering rod (32) and the hinge point.
5. The anti-seismic prefabricated stair according to claim 1, characterized in that: The bottom plate (12) is provided with a sliding groove (121); the first buffering rod (31) comprises a sliding block (311) arranged close to one end of the bottom plate (12); and the sliding block (311) is slidably connected to the sliding groove (121).
6. The anti-seismic prefabricated stair according to claim 5, characterized in that: The sliding groove (121) is provided with a damping spring (4); the damping spring (4) is connected with a buffering pressing plate (41); when the stepping plate (11) is micro-moved downward, the sliding block (311) moves to press the buffering pressing plate (41), and the damping spring (4) is compressed.
7. The anti-seismic prefabricated stair according to claim 1, characterized in that: The supporting mechanism (2) comprises a plurality of semi-rigid supporting columns (21); each semi-rigid supporting column (21) is arranged between the bottom plate (12) and the stepping plate (11); the top end of each semi-rigid supporting column (21) is connected to the stepping plate (11); and the bottom end of each semi-rigid supporting column (21) is connected to the bottom plate (12).
8. The anti-seismic prefabricated stair according to claim 1, characterized in that: Said base (1) is provided with a support column (13) for each bottom plate (12), and each support column (13) is connected to the corresponding bottom plate (12).