Telescopic rod for shock insulation trench and modular quick assembly cover plate
By using telescopic rods and modular cover plate design, and taking advantage of the parallelogram characteristics and rod linkage, the cover plate can achieve bidirectional adaptive displacement, which solves the problems of warping and insufficient load-bearing capacity of the seismic isolation trench cover plate during earthquakes, ensuring safe evacuation and efficient seismic isolation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING INST OF ARCHITECTURAL DESIGN
- Filing Date
- 2025-04-25
- Publication Date
- 2026-06-26
AI Technical Summary
The existing seismic isolation trench covers are prone to warping during earthquakes, threatening personnel safety, and their load-bearing capacity is insufficient to meet the needs of pedestrians and vehicles passing through.
The system employs telescopic rods and modular, quick-assembly cover plates. Through the collaborative design of pin-hinged nodes and flexible cover plate components, and utilizing the instability of parallelograms, it achieves bidirectional adaptive displacement of the cover plate in both horizontal and vertical directions. The telescopic linkage between the rods absorbs seismic energy, consumes the reserved deformation amount, and prevents the cover plate from warping.
It effectively eliminates the risk of cover plate warping, ensures the safety of personnel evacuation, improves load-bearing capacity, meets the needs of pedestrian and vehicle passage, enhances seismic isolation efficiency, is easy to construct, and is suitable for narrow walkways and stair connections.
Smart Images

Figure CN224412638U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of earthquake resistance in building engineering, and in particular to a telescopic rod and modular quick-assembly cover plate for seismic isolation trenches. Background Technology
[0002] In the field of seismic resistance technology for building engineering, seismic isolation trenches are a key component of seismically isolated buildings. Their purpose is to accommodate the deformation of the seismically isolated building during an earthquake, preventing it from colliding with the foundation during an earthquake. A cover plate is generally installed on the top of the seismic isolation trench. Under normal use, the cover plate should possess a certain strength and rigidity; during an earthquake, the cover plate should deform along with the seismically isolated building.
[0003] Chinese invention patent application number 202411644495.1 discloses a lifting and sliding type seismic isolation trench cover structure and its usage method. During an earthquake, the seismic isolation device impacts the lower end of the first rod and the front end of the optical axis, pushing the lower end of the first rod to move synchronously with the optical axis along the circular through-holes of the fixed linear bearing and the fixed frame. The X-shaped frame of the cross-lifting mechanism gradually changes from a large angle to a small angle, lifting the upper cover plate upwards without detaching it from the optical axis, thus achieving the displacement space required by the seismic isolation device under seismic force. While providing displacement space, it ensures that the cover plate will not fall into the seismic isolation trench, thus not affecting the normal functioning of the seismic isolation device. It can meet the daily load-bearing requirements and maintain structural integrity after an earthquake. It can be manually reset for repeated use without the risk of falling into the seismic isolation trench. However, in the above-described solution, the cover plate may tilt upwards during an earthquake, threatening personnel safety.
[0004] Chinese utility model patent application number 202322978058.0 discloses a retractable seismic isolation joint cover device, including a telescopic component and connecting members. The connecting members include strips or displacement boxes. The connecting members are used to connect with building components on both sides of the seismic isolation joint. The telescopic component is disposed between two symmetrically arranged connecting members. When the retractable cover is not subjected to external force, the plane on which the telescopic component is located is a horizontal plane. The two ends of the telescopic component are rotatably connected to the two connecting members respectively. When the retractable cover is subjected to external force, the telescopic component rotates so that its plane is an inclined plane or a vertical plane. The telescopic component can extend and retract in both the length and width directions of its plane. The retractable seismic isolation joint cover device of this utility model can generate telescopic and rotational deformation in a horizontal plane, and can also generate telescopic and rotational deformation on an inclined plane outside the horizontal plane, so as to reduce the problem of the seismic isolation joint being blocked and unable to move freely due to the damage of the cover during an earthquake. The above-mentioned solution involves placing the cover plate between the two buildings. During an earthquake, the cover plate can expand and contract in the horizontal plane. Although this can solve the problem of the cover plate tilting upwards during an earthquake, the cover plate has poor load-bearing capacity and is not suitable for situations where people or vehicles pass through.
[0005] To address the aforementioned issues, this application provides a telescopic rod for seismic isolation trenches and a modular, quick-assembly cover plate. Utility Model Content
[0006] To address the aforementioned problems, this utility model provides a telescopic rod for seismic isolation trenches and a modular, quick-assembly cover plate.
[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0008] This utility model relates to a telescopic rod and a modular quick-assembly cover plate for a seismic isolation trench, which are installed above the seismic isolation trench, and includes:
[0009] Two parallel support beams are provided, with their ends hinged to the structural connection points. The support beams are telescopic structures.
[0010] Support rods are installed on the support beam and arranged in multiple groups along the length of the support beam. The support rods are movably connected to the support beam so that the support rods can move relative to each other.
[0011] The present invention relates to a retractable rod and a modular quick-assembly cover plate for a seismic isolation trench. Furthermore, the support beam includes a first rod and a second rod, which are retractably connected by a sleeve.
[0012] The present invention relates to a retractable rod and a modular quick-assembly cover plate for a seismic isolation trench. Furthermore, multiple sets of the support rods are arranged side by side along the length direction of the first rod, and multiple sets of the support rods are arranged at intervals along the length direction of the second rod. The support rods are movably connected to the first rod and the second rod respectively.
[0013] The present invention relates to a telescopic rod and a modular quick-assembly cover plate for a seismic isolation trench. Furthermore, a U-shaped profile is fixed on the bottom surface of the supporting rod, the second rod is sleeved inside the U-shaped profile, and there is a deformation space between the second rod and the U-shaped profile in the horizontal direction.
[0014] The present invention relates to a telescopic rod and a modular quick-assembly cover plate for a seismic isolation trench. Furthermore, at both ends of the support rod along its length, L-shaped fasteners with openings facing the first rod are fixed to the bottom surface of the support rod. The first rod has a straight ear plate on its side. The horizontal part of the L-shaped fastener is fastened to the bottom surface of the straight ear plate. A deformation space is provided between the cantilever end of the straight ear plate and the vertical part of the L-shaped fastener.
[0015] The present invention relates to a retractable rod and a modular quick-assembly cover plate for a seismic isolation trench. Furthermore, it also includes a steel cover plate disposed on the side of the second rod, the steel cover plate covering the supporting rod on the second rod.
[0016] The present invention relates to a retractable rod and a modular quick-assembly cover plate for a seismic isolation trench. Furthermore, the length of the support beam is at least three times the width of the seismic isolation trench, and the support beam is provided on one side of the seismic isolation trench with a width of at least twice that of the seismic isolation trench.
[0017] The present invention relates to a retractable rod and a modular quick-assembly cover plate for a seismic isolation trench. Furthermore, the first rod of the supporting beam spans the seismic isolation trench and extends beyond at least one times the width of the seismic isolation trench.
[0018] Compared with the prior art, this utility model has the following advantages:
[0019] 1. This application utilizes the instability of parallelograms by designing a pin-hinged node and a flexible cover plate assembly in collaboration. Through the expansion and contraction and linkage between the members, the cover plate achieves bidirectional adaptive displacement in both horizontal and vertical directions. Seismic energy is absorbed through the deformation of the reserved isolation trench and the graded dissipation mechanism of the linkage movement of the members. The energy absorption rate is high, and the structure is not easily damaged due to displacement restriction during an earthquake.
[0020] 2. During an earthquake, the risk of the cover plate tilting upwards is completely eliminated through a planar motion mechanism, ensuring the safety of personnel evacuation;
[0021] 3. Through the linkage between the rods, the expansion and contraction between the rods are realized, effectively controlling the deformation trajectory and displacement. With the cooperation of multiple sets of parallel support rods, the support rods serve as the secondary keel of rods 1 and 2 during normal use, meeting the needs of people and vehicles passing through; during earthquakes, relative displacement occurs, coordinating with the deformation of the cover plate assembly.
[0022] 4. High reliability during earthquakes: The reserved width of the seismic isolation trench ensures that the cover plate will not warp or deform during earthquakes by consuming the reserved deformation amount, thus ensuring that the cover plate does not threaten personnel safety during the evacuation process during earthquakes.
[0023] 5. This cover plate combines high seismic isolation efficiency, ease of construction, and environmental friendliness, and can be widely used in narrow walkways, flexible connections between seismic-isolated buildings and elevators, and connections between seismic-isolated buildings and the outdoors. This new cover plate provides an innovative solution for improving the seismic performance of infrastructure.
[0024] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description
[0025] Figure 1 This is a plan view of the present invention;
[0026] Figure 2 for Figure 1 Sectional view of AA;
[0027] Figure 3 This is a schematic diagram showing the connection between the first rod and the supporting rod of this utility model;
[0028] Figure 4 This is a schematic diagram of the telescopic support beam structure of this utility model;
[0029] Figure 5 This is a modified diagram of the multi-span cover plate unit of this utility model;
[0030] Figure 6 This is a schematic diagram showing the connection between the second rod and the support rod of this utility model.
[0031] Figure label:
[0032] 1. Cover plate unit; 2. Support beam; 2.1. First member; 2.2. Second member; 3. Support member; 3.1. L-shaped fastener; 3.2. Straight ear plate; 3.3. Deformation space; 4. Steel cover plate; 5. Seismic isolation trench; 6. Base; 7. Rope; 8. U-shaped profile. Detailed Implementation
[0033] like Figures 1-6 As shown, this utility model discloses a telescopic rod and a modular quick-assembly cover plate for a seismic isolation trench. It includes multiple cover plate units 1 arranged along the length of the seismic isolation trench 5. Each cover plate unit 1 includes a support beam 2, a support rod 3, and a steel cover plate 4. The support beam 2 and the support components are assembled to form a parallelogram structure, which is located above the seismic isolation trench 5. Its two ends are used to be hinged to the base 6 on the structure. During an earthquake, the cover plate unit 1 can move in-plane to avoid the risk of the cover plate tilting up.
[0034] The support beam 2 includes a first member 2.1 and a second member 2.2. In this embodiment, two first members 2.1 are arranged in parallel. The first member 2.1 spans the seismic isolation trench 5 and is telescopically connected to the second member 2.2 by a sleeve. The opposite ends of the first member 2.1 and the second member 2.2 are used to hinge with the base 6. Multiple sets of support members 3 are arranged side by side along the length direction of the first member 2.1. The support members 3 are movably connected to the first member 2.1. The connection has a deformation space 3.3 arranged along the length direction of the support member 3. The support member 3 can move within the allowable range of the deformation space 3.3, so that the support member 3 can undergo relative displacement when moving in the plane of the cover plate assembly, thereby completing the in-plane movement of the cover plate assembly.
[0035] At both ends of the support rod 3 along its length, L-shaped fasteners 3.1 with openings facing the first rod 2.1 are fixed to the bottom surface of the support rod 3. The first rod 2.1 has a straight ear plate 3.2 on its side. The horizontal part of the L-shaped fastener 3.1 is fastened to the bottom surface of the straight ear plate 3.2. A deformation space 3.3 is provided between the cantilever end of the straight ear plate 3.2 and the vertical part of the L-shaped fastener 3.1.
[0036] Multiple support rods 3 are spaced apart on the second rod 2.2. The support rods 3 serve as the secondary keel of the steel cover plate 4, mainly to improve the strength of the steel cover plate 4. The support rods 3 are movably connected to the second rod 2.2. Specifically, a U-shaped profile 8 is fixed on the bottom surface of the support rod 3, and the second rod 2.2 is fitted inside the U-shaped profile 8. There is a deformation space 3.3 between the second rod 2.2 and the U-shaped profile 8 in the horizontal direction.
[0037] A rope 7 is connected between adjacent support rods 3 on the second rod 2.2 and between the support rod 3 at the sleeve end of the second rod 2.2 and the first rod 2.1. In this embodiment, the rope 7 is connected to the side of the support rod 3, and its main function is to prevent the first rod 2.1 and the second rod 2.2 from separating by using a sleeve connection.
[0038] The steel cover plate 4 is placed on the support rod 3 on the second rod 2.2. The end of the steel cover plate 4 near the base 6 is fixedly connected to the base 6. When the cover plate assembly moves in the plane, the position of the steel cover plate 4 remains unchanged. The steel cover plate 4 mainly flattens the cover plate structure and at the same time restrains the vertical deformation of the support rod that causes misalignment. Furthermore, the length of the cover plate unit 1 is at least three times the width of the seismic isolation trench 5, and the cover plate unit 1 is provided on one side of the seismic isolation trench 5 at least twice the width of the seismic isolation trench 5. The first member 2.1 spans the seismic isolation trench 5 by at least one width of the seismic isolation trench 5. In this embodiment, the length of the cover plate unit 1 is three times the width of the seismic isolation trench 5, the cover plate unit 1 is provided on one side of the seismic isolation trench 5 at twice the width of the seismic isolation trench 5, and the first member 2.1 spans the seismic isolation trench 5 by one width of the seismic isolation trench 5. With the above settings, the reliability during earthquakes is high, the width of the seismic isolation trench 5 is reserved, and the cover plate will not warp or deform during earthquakes by consuming the reserved deformation amount, thereby ensuring that the cover plate does not threaten personnel safety during the evacuation process during earthquakes.
[0039] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A seismic isolation trench using telescopic rods and modular quick-assembly cover plates is installed above the seismic isolation trench (5), characterized in that, include: Support beams (2) are arranged in parallel, with both ends used for hinged connection with the structure. The support beams (2) are telescopic structures. Support rods (3) are installed on the support beam (2) and multiple sets are arranged side by side along the length of the support beam (2). The support rods (3) are movably connected to the support beam (2) so that the support rods (3) can move relative to each other.
2. The telescopic rod and modular quick-assembly cover plate for the seismic isolation trench according to claim 1, characterized in that, The support beam (2) includes a first member (2.1) and a second member (2.2), which are telescopically connected by a sleeve.
3. The telescopic rod and modular quick-assembly cover plate for the seismic isolation trench according to claim 2, characterized in that, Multiple sets of the support rods (3) are arranged side by side along the length direction of the first rod (2.1), and multiple sets of the support rods (3) are arranged at intervals along the length direction of the second rod (2.2). The support rods (3) are movably connected to the first rod (2.1) and the second rod (2.2) respectively.
4. The telescopic rod and modular quick-assembly cover plate for the seismic isolation trench according to claim 3, characterized in that, The bottom surface of the support rod (3) is fixed with a U-shaped profile (8), the second rod (2.2) is sleeved in the U-shaped profile (8), and there is a deformation space (3.3) between the second rod (2.2) and the U-shaped profile (8) in the horizontal direction.
5. The telescopic rod and modular quick-assembly cover plate for the seismic isolation trench according to claim 3, characterized in that, At both ends of the support rod (3) along its length, L-shaped fasteners (3.1) with openings facing the first rod (2.1) are fixed to the bottom surface of the support rod (3). The first rod (2.1) has a straight ear plate (3.2) on its side. The horizontal part of the L-shaped fastener (3.1) is fastened to the bottom surface of the straight ear plate (3.2). A deformation space (3.3) is provided between the cantilever end of the straight ear plate (3.2) and the vertical part of the L-shaped fastener (3.1).
6. The telescopic rod and modular quick-assembly cover plate for the seismic isolation trench according to claim 3, characterized in that, It also includes a steel cover plate (4) located on the side of the second rod (2.2), the steel cover plate (4) covering the support rod (3) on the second rod (2.2).
7. The telescopic rod and modular quick-assembly cover plate for seismic isolation trenches according to any one of claims 1-6, characterized in that, The length of the support beam (2) is at least three times the width of the seismic isolation trench (5), and the support beam (2) is provided on one side of the seismic isolation trench (5) at least twice the width of the seismic isolation trench (5).
8. The telescopic rod and modular quick-assembly cover plate for the seismic isolation trench according to claim 7, characterized in that, The first member (2.1) of the support beam (2) spans the seismic isolation trench (5) and extends at least twice the width of the seismic isolation trench (5).