Anti-seismic buffer structure of prefabricated stair
By introducing seismic buffer components into prefabricated stairs, using return springs and dampers to absorb horizontal thrust, and combining rubber blocks and scraper designs, the problem of cracks caused by horizontal thrust in prefabricated stairs has been solved, improving service life and safety.
Patent Information
- Application Number
- CN202423309900.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Precast stairs are prone to cracking under horizontal thrust, affecting their stability and service life.
The shock-absorbing components, including return springs, dampers, and rubber blocks, are used to absorb and counteract horizontal thrust through the cooperation of the adjusting seat and support platform, and to remove foreign objects by scraping blocks to reduce the risk of wear.
It effectively reduces or offsets horizontal thrust, improves the service life of prefabricated stairs and the safety of buildings, and reduces the risk of wear and tear.
Smart Images
Figure CN223781000U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to prefabricated stair technology field, concretely is a prefabricated stair anti -seismic buffer structure. BACKGROUND
[0002] The prefabricated stair anti -seismic buffer structure is a structure for improving the anti -seismic performance and buffering capacity of the stair in natural disasters such as earthquakes, and usually comprises a stair body, a wall (or a support structure) and a buffer element arranged between the wall and the stair body, which absorbs and disperses the energy generated during an earthquake, reducing the direct impact between the stair and the wall.
[0003] In order to enhance the anti -seismic buffering capacity of the prefabricated stair, a rubber seismic isolation support is usually installed longitudinally at the connection between the stair and the ground, which can effectively reduce the direct action of seismic energy on the prefabricated stair, thereby protecting the stair structure from the influence of severe vibration.
[0004] However, although the rubber seismic isolation support can significantly reduce the damage caused by vibration, it will convert the vibration in the vertical direction into horizontal thrust, and since the prefabricated stair is a fixed structure, this horizontal thrust inevitably affects the stability of the prefabricated stair structure, and also easily causes cracks in the stair itself, thereby affecting its service life. UTILITY MODEL CONTENT
[0005] The utility model aims at providing a prefabricated stair anti -seismic buffer structure to solve the problem that the prefabricated stair is a fixed structure, the horizontal thrust inevitably affects the stability of the prefabricated stair, and easily causes cracks in the stair itself.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:
[0007] The utility model provides an anti -seismic buffer structure of prefabricated stair, including anti -seismic buffer component, the outside of anti -seismic buffer component is provided with prefabricated stair body, the upper end surface of prefabricated stair body is fixedly connected with the guardrail, anti -seismic buffer component includes support box, both sides of support box inner wall are fixedly connected with support seat, and the fixedly connected with positioning rod between two support seats, the surface of positioning rod is equipped with the adjusting seat of sliding, and the fixedly connected with reset spring between adjusting seat and support seat, the bottom of adjusting seat is fixedly connected with first connecting seat, the outside of support seat is fixedly connected with second connecting seat, and the hinged with damper between first connecting seat and second connecting seat, the top of adjusting seat is equipped with the protection mechanism, the protection mechanism includes installation table, and the top of installation table is fixedly connected with rubber board, and the top of rubber board is fixedly connected with support table, and both ends of support table are fixedly connected with fixed block, and the outside of fixed block is fixedly connected with rubber block, and the middle part of rubber block is equipped with buffer hole, and the inner wall of support box is equipped with movable slot, and the corner of support box top is fixedly connected with scraping block, and the top of both sides of support box is equipped with square groove.
[0008] As the further optimization of the utility model, the support table is fixedly connected between the support table and the prefabricated stair body, the support table is located inside the square groove, and the upper surface of the support table is flush with the upper surface of the support box.
[0009] As the further optimization of the utility model, the four corners of the bottom of the support box are fixedly connected with rubber shock isolation bearings, the support seat is located below the adjusting seat, and there is a gap between the upper surface of the support seat and the lower surface of the support table.
[0010] As the further optimization of the utility model, the positioning rod is arranged on the top of the support seat, the outer side of the positioning rod is slidably connected with the inner side of the adjusting seat, and the two adjusting seats are located on both sides of the surface of the positioning rod.
[0011] As the further optimization of the utility model, the reset spring is sleeved on the outer surface of the positioning rod, one end of the reset spring is fixedly connected with the rear end surface of the adjusting seat, and the other end of the reset spring is fixedly connected with the front end surface of the support seat.
[0012] As the further optimization of the utility model, the bottom of the damper is hingedly connected with the inner side of the second connecting seat, and the telescopic end of the damper is hingedly connected with the inner side of the first connecting seat.
[0013] As a further optimization of this utility model, the rubber block is located inside the movable groove, and the rubber block and the movable groove are in sliding fit. Every two adjacent scraper blocks are arranged in a left-right support configuration. The scraper block is located above the movable groove, and the lower surface of the scraper block is in sliding fit with the upper surface of the support platform.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] 1. By using the anti-seismic buffer components, the combination of return springs, dampers and adjusting seats can effectively reduce or offset the thrust of the mounting platform, thereby weakening or offsetting the horizontal thrust of the prefabricated staircase body, improving the service life of the prefabricated staircase body and ensuring the safety and reliability of the building.
[0016] 2. The protective mechanism allows the scraper to remove dust and foreign objects adhering to the sides of the support platform during its movement, reducing the risk of these foreign objects entering the moving groove and causing jamming and wear. The combination of the rubber block and the buffer hole increases the deformation capacity of the rubber block. When subjected to external force, the rubber block can more easily absorb energy through the deformation around the hole, providing better protection for the support platform. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a cross-sectional structural diagram of the support box of this utility model;
[0019] Figure 3 This is a schematic diagram of the explosion structure of the protective mechanism of this utility model;
[0020] Figure 4 This is a schematic diagram of the protective mechanism of this utility model;
[0021] Figure 5 This is a partial structural schematic diagram of the protective mechanism of this utility model;
[0022] Figure 6 This is a schematic diagram of the structure of the rubber block of this utility model.
[0023] In the diagram: 1. Precast staircase body; 2. Guardrail; 3. Seismic buffer assembly; 31. Support box; 32. Support seat; 33. Positioning rod; 34. Adjustment seat; 35. Return spring; 36. First connecting seat; 37. Second connecting seat; 38. Damper; 39. Protective mechanism; 391. Mounting platform; 392. Rubber plate; 393. Support platform; 394. Fixing block; 395. Rubber block; 396. Buffer hole; 397. Movable groove; 398. Scraper block; 399. Square groove; 4. Rubber seismic isolation bearing. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.
[0025] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" as used in the specification indicate the presence of features, steps, operations, devices, components and / or combinations thereof.
[0026] Please refer to Figures 1-6 The present application provides a technical solution:
[0027] The prefabricated stair anti-seismic buffer structure comprises an anti-seismic buffer assembly 3, the outer side of the anti-seismic buffer assembly 3 is provided with a prefabricated stair body 1, the upper end surface of the prefabricated stair body 1 is fixedly connected with a guardrail 2, the anti-seismic buffer assembly 3 comprises a support box 31, the inner walls of the support box 31 are fixedly connected with support seats 32 on both sides, a positioning rod 33 is fixedly connected between the two support seats 32, an adjusting seat 34 is slidably arranged on the surface of the positioning rod 33, a return spring 35 is fixedly connected between the adjusting seat 34 and the support seat 32, a first connecting seat 36 is fixedly connected to the bottom end of the adjusting seat 34, a second connecting seat 37 is fixedly connected to the outer side of the support seat 32, a damper 38 is hingedly connected between the first connecting seat 36 and the second connecting seat 37, the bottom of the damper 38 is hingedly connected to the inner side of the second connecting seat 37, the telescopic end of the damper 38 is hingedly connected to the inner side of the first connecting seat 36, a protection mechanism 39 is arranged above the adjusting seat 34, the protection mechanism 39 comprises a mounting table 391, the mounting table 391 is fixedly arranged at the top end of the adjusting seat 34, a rubber plate 392 is fixedly connected to the top end of the mounting table 391, a support table 393 is fixedly connected to the top end of the rubber plate 392, fixed blocks 394 are fixedly connected to both ends of the support table 393, rubber blocks 395 are fixedly connected to the outer sides of the fixed blocks 394, a buffer hole 396 is formed in the middle of the rubber block 395, a movable groove 397 is formed in the inner wall of the support box 31, a scraping block 398 is fixedly connected to the corner of the top end of the support box 31, square grooves 399 are formed in the top of both sides of the support box 31.
[0028] As a further implementation of the present scheme, the support table 393 is fixedly connected with the prefabricated stair body 1, the support table 393 is located inside the square groove 399, and the upper surface of the support table 393 is flush with the upper surface of the support box 31. This setting is safer.
[0029] As a further implementation of the present scheme, the four corners of the bottom end of the support box 31 are fixedly connected with rubber shock isolation supports 4, the support seat 32 is located below the adjusting seat 34, and there is a gap between the upper surface of the support seat 32 and the lower surface of the support table 393. This setting does not interfere with each other, and the support seat 32 will not hinder the horizontal movement of the support table 393.
[0030] As a further implementation of the present scheme, the positioning rod 33 is arranged at the top of the support seat 32, the positioning rod 33 is slidably connected between the outer side of the positioning rod 33 and the inner side of the adjusting seat 34, and the two adjusting seats 34 are located on both sides of the surface of the positioning rod 33. This setting allows the adjusting seat 34 to move along the path of the positioning rod 33, facilitating the application of force to the return spring 35 and the damper 38.
[0031] As a further implementation of the present scheme, the return spring 35 is sleeved on the outer surface of the positioning rod 33, the return spring 35 is located between the adjusting seat 34 and the support seat 32, one end of the return spring 35 is fixedly connected with the rear end surface of the adjusting seat 34, and the other end of the return spring 35 is fixedly connected with the front end surface of the support seat 32. This setting is conducive to the transmission of force.
[0032] As a further implementation of the present scheme, the rubber block 395 is located inside the movable groove 397, the rubber block 395 is slidably connected with the movable groove 397, every two adjacent scraping blocks 398 are arranged in a left-right supporting manner, the scraping blocks 398 are located above the movable groove 397, and the lower surface of the scraping blocks 398 is slidably connected with the upper surface of the support table 393. By setting the scraping blocks 398, dust and foreign matter attached to the top can be removed during the movement of the support table 393.
[0033] Workflow: Through the rubber shock isolation supports 4 installed at the bottom of the support box 31, ground vibrations can be effectively absorbed. At the same time, the design of the support box 31 enables it to effectively absorb horizontal forces. The specific working principle is as follows: when the prefabricated stair body 1 is affected by vibration and moves slowly in the horizontal direction, the two ends of the prefabricated stair body 1 will be connected with the support table 393, and the horizontal force will be transmitted to the support table 393. The support table 393 is connected with the mounting table 391 through the rubber plate 392, and the force is further transmitted to the mounting table 391. In this process, the rubber plate 392 plays a role in buffering and shock absorption.
[0034] With the installation platform 391 drives the bottom end of the adjusting seat 34 synchronous movement, adjusting seat 34 along the positioning rod 33 path movement, push reset spring 35 shrink, reset spring 35 absorbs a part of the force, slow down the moving speed of adjusting seat 34, in addition, located below the adjusting seat 34 articulated damper 38, under the action of the positioning rod 33 push force, its telescopic end will be accordingly lengthened or shortened, this process greatly offsets the push force of positioning rod 33, so as to realize the weakening or offsetting of the horizontal push force of prefabricated stair body 1, improve the service life of prefabricated stair body 1, ensure the safety and reliability of the building;
[0035] The movable groove 397 provides space for the horizontal movement of the support platform 393, and the scraper block 398 is designed in a triangular cross section and is in sliding cooperation with the support platform 393, so that it can remove dust and foreign matters attached to the side of the support platform 393 during the movement of the support platform 393, reduce the possibility of the foreign matters entering the inside of the movable groove 397, and reduce the risk of jamming and abrasion caused by the foreign matters, and the rubber block 395 provides good protection for the support platform 393 to prevent it from being damaged when colliding with the inside of the movable groove 397, the rubber block 395 is made of soft rubber material and is provided with a plurality of buffer holes 396 in the middle part, the buffer holes 396 can increase the deformation capacity of the rubber block 395, and when subjected to external force, the rubber block 395 can more easily absorb energy through the deformation around the holes.
[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A prefabricated stair anti-seismic buffer structure comprising an anti-seismic buffer assembly (3), characterized in that: The outer side of the anti-seismic buffer assembly (3) is provided with a prefabricated stair body (1), and the upper end surface of the prefabricated stair body (1) is fixedly connected with a guardrail (2); The anti-seismic buffer assembly (3) comprises a support box (31), the inner walls of the support box (31) are fixedly connected with support seats (32) on both sides, a positioning rod (33) is fixedly connected between the two support seats (32), an adjusting seat (34) is slidably arranged on the surface of the positioning rod (33), a reset spring (35) is fixedly connected between the adjusting seat (34) and the support seat (32), a first connecting seat (36) is fixedly connected to the bottom end of the adjusting seat (34), a second connecting seat (37) is fixedly connected to the outer side of the support seat (32), a damper (38) is hinged between the first connecting seat (36) and the second connecting seat (37), a protection mechanism (39) is arranged above the adjusting seat (34), the protection mechanism (39) comprises a mounting table (391), the mounting table (391) is fixedly arranged at the top end of the adjusting seat (34), a rubber plate (392) is fixedly connected to the top end of the mounting table (391), a support table (393) is fixedly connected to the top end of the rubber plate (392), fixed blocks (394) are fixedly connected to both ends of the support table (393), rubber blocks (395) are fixedly connected to the outer sides of the fixed blocks (394), a buffer hole (396) is formed in the middle of each rubber block (395), and movable grooves (397) are formed in the inner walls of the support box (31); corner scraping blocks (398) are fixedly connected to the top corners of the support box (31), and square grooves (399) are formed in the top portions of the two sides of the support box (31).
2. The anti-seismic buffer structure for a prefabricated stair according to claim 1, characterized in that: The support table (393) is fixedly connected between the support table (393) and the prefabricated stair body (1), the support table (393) is located inside the square groove (399), and the upper surface of the support table (393) is flush with the upper surface of the support box (31).
3. The anti-seismic buffer structure for a prefabricated stair according to claim 1, characterized in that: Four corner scraping blocks (398) are fixedly connected to the bottom end of the support box (31), the support seat (32) is located below the adjusting seat (34), and there is a gap between the upper surface of the support seat (32) and the lower surface of the support table (393).
4. The pre-fabricated stair anti-seismic buffer structure according to claim 1, characterized in that: The positioning rod (33) is arranged on the top of the support seat (32), the outer side of the positioning rod (33) is slidably connected to the inner side of the adjusting seat (34), and the two adjusting seats (34) are respectively located on both sides of the surface of the positioning rod (33).
5. The pre-fabricated stair anti-shock buffering structure according to claim 1, wherein: The reset spring (35) is sleeved on the outer surface of the positioning rod (33), the reset spring (35) is located between the adjusting seat (34) and the support seat (32), one end of the reset spring (35) is fixedly connected to the rear end surface of the adjusting seat (34), and the other end of the reset spring (35) is fixedly connected to the front end surface of the support seat (32).
6. The pre-fabricated stair anti-shock buffering structure according to claim 1, wherein: The bottom of the damper (38) is hinged to the inner side of the second connecting seat (37), and the telescopic end of the damper (38) is hinged to the inner side of the first connecting seat (36).
7. The pre-fabricated stair anti-shock buffering structure according to claim 1, wherein: The position of the rubber block (395) is inside the movable groove (397), the rubber block (395) and the movable groove (397) are in sliding fit, every two adjacent said scraping block (398) is arranged in left and right support, the scraping block (398) is above the movable groove (397), the lower surface of the scraping block (398) and the upper surface of the support table (393) are in sliding fit.