A kind of easily installed shock isolation device for mobile building

Abstract

This utility model discloses a seismic isolation device for easy installation in mobile buildings, installed between the bottom of the mobile building equipment or shell and the substructure. The device includes a main sliding plate, a friction pendulum seismic isolation seat, and a base. The bottom surface of the main sliding plate is an arc-shaped inner groove sliding surface, which is in contact with a low-friction wear-resistant plate on top of the friction pendulum seismic isolation seat. The slider is mounted on the base via a connecting rod with a ball-joint rotating body. During vibration, the slider slides on the sliding surface and rotates through the ball-joint rotating body, utilizing sliding friction and rotational energy dissipation to buffer the vibration. Its sliding surface has the same curvature as the low-friction wear-resistant plate. The main sliding plate is equipped with a recessed edge and a connecting mechanism, connected to the substructure via a chain or steel rope. This device requires no special prefabrication design, is suitable for various mobile buildings, is easy to install, and effectively solves the problems of poor applicability, complex structure, and difficult installation of existing mobile building seismic isolation devices, possessing excellent seismic isolation performance and stability.

Description

Technical Field

[0001] This utility model relates to the field of seismic isolation device technology, specifically a seismic isolation device for easy installation in mobile buildings. Background Technology

[0002] With the accelerated advancement of industrialization in the construction industry, prefabricated and mobile buildings, as representatives of new construction methods, have been widely used in emergency resettlement, military deployment, and commercial facilities due to their advantages such as modular production, rapid assembly, and strong environmental adaptability. These buildings often use lightweight steel structure box units, achieving rapid transportation and multi-dimensional combination through standardized components. However, their weaknesses in seismic and wind resistance are gradually becoming apparent—traditional connection methods and seismic isolation devices are insufficient to meet the mechanical requirements under dynamic environments.

[0003] Current seismic isolation technology for mobile buildings faces significant technical bottlenecks: First, some mobile building equipment boxes are rigidly welded or bolted to the foundation, which can easily lead to rigid collisions under seismic excitation, causing structural stress concentration and even box overturning. Second, for miniaturized building units (typically weighing less than 8 tons and with planar dimensions less than 6m × 8m), traditional laminated rubber seismic isolation bearings must adopt slender structures with an aspect ratio greater than 0.6 to meet horizontal displacement requirements (usually exceeding 250mm). This not only reduces the bearing's overturning stability but also causes severe degradation of hysteretic performance due to hardening / softening of the rubber material under alternating temperature conditions (-40℃ to 60℃). Third, although friction pendulum bearings theoretically possess self-resetting characteristics, their multi-component modular design (including 12-15 components such as spherical cap plates, sliding surfaces, and limiting rings) results in on-site assembly time exceeding several hours per set, and the scattered components are prone to wear on mating surfaces during transport. More importantly, existing seismic isolation devices generally require the building's foundation slab to have a specific anchoring structure, which severely restricts the retrofitting and application of existing box-type buildings.

[0004] Existing seismic isolation devices for mobile buildings are typically large in size and complex in component design, resulting in time-consuming and labor-intensive assembly and increased overall costs. Some also require adaptive structural modifications to the corresponding building structural components to facilitate installation, but these also have limitations and cannot be used efficiently in general-purpose modular shelters or mobile buildings. Summary of the Invention

[0005] To address the shortcomings and defects of the existing technology, the inventors have improved and designed a new structure that is well-suited for various types of mobile buildings or equipment, does not damage buildings, requires no prefabrication of special structural components, is easy to install, has high energy efficiency, and is simple and durable. Specifically, this invention is implemented as follows:

[0006] A vibration isolation device for easy installation in mobile buildings is used to install between the bottom of the mobile building equipment or its casing and the substructure. It includes: a main sliding plate installed at the bottom of the mobile building equipment or its casing, with a sliding surface having an arc-shaped inner groove structure; a friction pendulum vibration isolation seat with a low-friction wear-resistant plate mounted on its top, which contacts the sliding surface; a base installed on the substructure, with the low-friction wear-resistant plate mounted on a slider, the slider being vertically mounted on the base via a connecting rod; the upper end of the connecting rod is a ball-joint rotating body, which is movably installed with the slider, allowing the slider to rotate relative to the ball-joint rotating body; the friction pendulum vibration isolation seat can dissipate energy and buffer vibrations by utilizing the sliding displacement of the slider on the sliding surface.

[0007] Furthermore, the curvature of the sliding surface is the same as the curvature of the front surface of the low-friction wear-resistant plate.

[0008] Furthermore, the slider includes a mounting groove and a mounting base. The mounting groove is fixedly mounted on the mounting base, and the low-friction wear-resistant plate is fixedly mounted in the mounting groove. A rotating groove is provided at the bottom of the mounting base, and the upper half of the ball joint rotating body is placed in the rotating groove.

[0009] Furthermore, the bottom of the mounting base is provided with several bolt holes along the periphery of the rotating groove. The clamping clamp is inserted into the connecting rod and installed from below by several bolts inserted into the bolt holes to prevent the ball joint rotating body from coming out.

[0010] Furthermore, the connecting rod includes a ball joint rotating body, a flange, and a screw section. The screw section is screwed into the lower structure with a pre-set threaded hole, and a lock nut is fitted on the screw section. The flange and the lock nut securely install the connecting rod onto the lower structure.

[0011] Furthermore, the main sliding plate is a block structure fixedly installed at the bottom of the mobile building equipment or equipment shell, and a recessed edge is provided at the edge of the sliding surface.

[0012] Furthermore, several connecting mechanisms are installed on the four sides of the main sliding plate, and the connecting mechanisms are buckles or locking rings.

[0013] Furthermore, the vibration isolation device is installed at least at the four corners of the bottom of the mobile building equipment or the equipment shell, and is connected to the connecting mechanism on the main sliding plate and the lower structure by a chain or steel rope; the lower structure is the lower mobile building equipment or the equipment or the ground.

[0014] The working principle of this utility model is as follows: The main sliding plate is installed at the bottom of the mobile building equipment or equipment shell, and its bottom surface is a sliding surface with an arc-shaped inner groove structure. A low-friction wear-resistant plate is installed on the top of the friction pendulum isolation seat, which contacts the sliding surface of the main sliding plate. The low-friction wear-resistant plate is installed on the slider, and the slider is vertically installed on the base through the connecting rod. The base is installed on the lower structure. This structure utilizes the principle of friction pendulum isolation, adopting the principle of a single pendulum. It uses the slider sliding on the sliding surface to dissipate energy and uses the sliding displacement to buffer the vibration impact, isolating the wind vibration of the upper building and the seismic waves received by the ground, achieving a flexible connection between the building and the foundation or frame. Specifically, when vibration occurs, the friction pendulum isolation seat uses the sliding displacement of the slider on the sliding surface of the main sliding plate to dissipate energy and buffer the vibration. The upper end of the connecting rod is a ball joint rotating body, which is movably installed with the slider, allowing the slider to rotate relative to the ball joint rotating body. In this way, when vibration occurs, the slider can slide on the sliding surface, and at the same time, the ball joint rotating body can rotate relative to the slider. By utilizing the sliding displacement and the friction generated during the rotation, the vibration energy is consumed, thus achieving the purpose of buffering vibration.

[0015] Introduction to the beneficial technical effects of this utility model:

[0016] (1) Wide applicability: It can be applied to a variety of mobile buildings or equipment without the need for special prefabrication design of building structural components. It can be directly installed between the bottom of the mobile building equipment or equipment shell and the lower structure. It can be used efficiently in both modular buildings and other general-purpose mobile buildings, solving the problem of the limitation of existing seismic isolation devices on the transformation and application of existing box-type buildings; it can even realize the combined use of multiple cabins.

[0017] (2) Good seismic isolation performance: Through the cooperation of the arc-shaped inner groove sliding surface of the main sliding plate with the low friction wear-resistant plate of the friction pendulum seismic isolation seat, and the movable connection between the slider and the ball joint rotating body, the sliding displacement and rotation of the slider on the sliding surface are used to dissipate energy and buffer during vibration, effectively reducing the impact of vibration on mobile buildings, avoiding rigid collision between the equipment box and the foundation under seismic excitation, and preventing structural stress concentration or even box overturning.

[0018] (3) High stability: The sliding surface and the low-friction wear-resistant plate have the same curvature and are in close contact, ensuring smooth sliding and stable vibration isolation effect. The recessed edge of the sliding surface of the main sliding plate can limit the sliding range of the slider. The main sliding plate is equipped with connecting mechanisms on all four sides, which connect the main sliding plate to the lower structure through chains or steel ropes, strengthening the connection between the mobile building equipment or equipment shell and the lower structure. This allows the chain to tighten the main sliding plate when the upper displacement is close to the limit position, preventing it from sliding out, and further improving the stability of the vibration isolation device during operation.

[0019] (4) Easy installation: The structural design is relatively simple and the installation method is clear. The connecting rod is screwed into the pre-set threaded hole of the lower structure through the screw section and fastened by locking nuts, etc. The installation of the slider and the ball joint rotating body, as well as the installation of the main sliding plate and the mobile building equipment or equipment shell, are relatively convenient, unlike some existing vibration isolation devices that have problems such as large size, complex component structure, and time-consuming and labor-intensive assembly. The overall structure is simple and does not have too many complex and easily damaged parts. In addition to being easy and efficient to install, it has better durability than some existing multi-component combined design vibration isolation devices that are prone to wear on mating surfaces during transportation. It can reduce the maintenance and replacement costs caused by component damage. Attached Figure Description

[0020] Figure 1 One of the structural perspective views of a seismic isolation device for easy installation in mobile buildings;

[0021] Figure 2 This is the second three-dimensional structural view of a seismic isolation device for easy installation in mobile buildings;

[0022] Figure 3 This is a schematic diagram of the installation structure of a seismic isolation device for easy installation in mobile buildings according to the present invention.

[0023] Figure 4 for Figure 3 Enlarged structural diagram of section A;

[0024] Figure 5 This is a structural cross-sectional schematic diagram of a seismic isolation device for easy installation in mobile buildings;

[0025] Figure 6 An exploded view of the structure of a seismic isolation device for easy installation in mobile buildings;

[0026] Figure 7 This is a three-dimensional schematic diagram of the installation structure of a seismic isolation device for easy installation in mobile buildings according to the present invention.

[0027] Figure 8 This is a schematic diagram illustrating the usage of a seismic isolation device for easy installation in mobile buildings according to this utility model.

[0028] Figure 9 This is a schematic diagram illustrating the shock-absorbing and vibration-isolating movement principle of a shock-absorbing device for easy installation in mobile buildings according to this utility model.

[0029] in:

[0030] 1—Main sliding plate, 11—Sliding surface, 12—Sunken platform retaining edge, 13—Connecting mechanism;

[0031] 2—Friction pendulum vibration isolation seat, 21—Low friction wear-resistant plate, 22—Slider, 22a—Mounting slot, 22b—Mounting seat, 22c—Rotating slot, 22d—Bolt hole, 22e—Clamping clamp, 23—Connecting rod, 23a—Spherical hinge rotating body, 23b—Flange, 23c—Screw section, 23d—Locking nut;

[0032] 3—Lower structure;

[0033] 4—Mobile construction equipment. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0035] Example 1: The actual use of a seismic isolation device for easy installation in mobile buildings:

[0036] Preliminary preparations:

[0037] Confirm the lower structure 3 (the lower mobile building equipment, equipment or ground). In this embodiment, the installation on the ground is taken as an example. Find the ground area where the cabin needs to be installed, and pre-set threaded holes that match the screw section 23c of the connecting rod 23 in the four corners or multiple areas of the cabin.

[0038] Prepare the necessary tools for installation, such as wrenches, as well as accessories such as chains or steel ropes and bolts. Prepare the required number of vibration isolation devices of this utility model.

[0039] Install the main sliding plate:

[0040] The main sliding plate 1 (block structure) is fixedly installed on the bottom of the mobile building equipment 4 or the equipment shell, ensuring a secure installation. The sliding surface 11 of the arc-shaped inner groove structure on the bottom surface of the main sliding plate 1 is inspected to ensure it is flat and free of debris. In this embodiment, connecting mechanisms 13 (buckles or locking rings, etc.) are installed on all four sides of the main sliding plate 1; these mechanisms must be checked for integrity and correct installation. The curvature of the sliding surface 11 is the same as the curvature of the front surface of the low-friction wear-resistant plate 21, resulting in a tighter and more compatible contact, ensuring smooth sliding and improving vibration isolation. The main sliding plate 1, a block structure, is fixedly installed on the bottom of the mobile building equipment 4 or the equipment shell, and a recessed edge 12 is provided at the edge of the sliding surface 11 to limit the sliding range of the slider 22, preventing it from sliding off the sliding surface 11 and ensuring the stability of the vibration isolation device.

[0041] Install friction pendulum vibration isolation seat and related components:

[0042] Install and fix the low-friction wear-resistant plate 21 of the friction pendulum vibration isolation seat 2 in the mounting groove 22a of the slider 22, ensuring a stable installation. Align the bottom rotation groove 22c of the mounting seat 22b of the slider 22 with the upper half of the ball joint rotating body 23a of the connecting rod 23, so that the upper half of the ball joint rotating body 23a is placed in the rotation groove 22c.

[0043] Insert the clamp 22e into the connecting rod 23, and insert several bolts from the bottom of the mounting base 22b along the bolt holes 22d around the rotating groove 22c. Tighten the bolts with a wrench to prevent the ball joint rotating body 23a from coming out, thus completing the installation and connection between the slider 22 and the connecting rod 23 and ensuring that the slider 22 can rotate flexibly relative to the ball joint rotating body 23a.

[0044] Screw the threaded section 23c of the connecting rod 23 with the slider 22 installed into the pre-set threaded hole on the lower structure 3. Then, install the locking nut 23d on the threaded section 23c. By tightening the locking nut 23d, the connecting rod 23 is securely installed on the lower structure 3 using the flange 23b and the locking nut 23d, ensuring that the entire friction pendulum vibration isolation seat 2 is firmly installed. At this time, the low-friction wear-resistant plate 21 contacts the sliding surface 11 of the main sliding plate 1, completing the installation and mating of the friction pendulum vibration isolation seat 2 and the main sliding plate 1.

[0045] Overall connection and fixation:

[0046] At least four corners of the bottom of the container's outer shell, vibration isolation devices are installed sequentially or simultaneously.

[0047] The connecting mechanism 13 (buckle or locking ring) on ​​the main sliding plate 1 is connected and fixed to the ground using a steel rope. The tension of the chain or steel rope is adjusted to ensure a firm connection, so that a stable connection is formed between the mobile building equipment 4 or the equipment shell and the lower structure 3.

[0048] Inspection and debugging:

[0049] After installation, thoroughly inspect the installation of each component to ensure that all bolts are tightened and that connecting mechanisms 13, chains, or steel ropes and other connecting components are securely installed.

[0050] When vibration occurs:

[0051] The mobile construction equipment 4 or its casing may be displaced due to vibration. Since the main sliding plate 1 is installed at its bottom, it moves along with the construction equipment or casing. The bottom surface of the main sliding plate 1 is a sliding surface 11 with an arc-shaped inner groove structure, which contacts the low-friction wear-resistant plate 21 on the top of the friction pendulum vibration isolation seat 2. Under vibration, the slider 22 slides on the sliding surface 11. Simultaneously, because the ball joint rotating body 23a at the upper end of the connecting rod 23 is movably installed with the slider 22, the slider 22 can rotate relative to the ball joint rotating body 23a, allowing the friction pendulum vibration isolation seat 2 to move and rotate flexibly within a certain range to adapt to vibrations in different directions.

[0052] The friction pendulum vibration isolation seat 2 contacts the sliding surface 11 of the main sliding plate 1 through the low friction wear-resistant plate 21. When vibrating, the slider 22 slides on the sliding surface 11, using the friction between the two to consume vibration energy, thereby reducing the vibration impact force on the building equipment or shell.

[0053] The recessed edge 12 provided at the edge of the sliding surface 11 of the main sliding plate 1 can limit the sliding range of the slider 22 to a certain extent, preventing the slider 22 from sliding excessively and dislodging from the sliding surface 11, thus playing a limiting protection role and ensuring that the vibration isolation device works within a safe range. At the same time, the connecting mechanism 13 on the main sliding plate 1 and the lower structure 3 are connected by chains or steel ropes, which can also limit the displacement of the mobile building equipment 4 or its shell to a certain extent, avoiding excessive shaking or displacement and preventing it from dislodging due to excessive displacement.

[0054] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A vibration isolation device for easy installation of mobile buildings, for installation between the bottom of a mobile building equipment (4) or equipment housing and the lower structure (3), characterized in that include: The main sliding plate (1) is installed at the bottom of the mobile building equipment (4) or the equipment shell, and the bottom surface is a sliding surface (11) with an arc-shaped inner groove structure. The friction pendulum vibration isolation seat (2) has a low-friction wear-resistant plate (21) installed on the top, which contacts the sliding surface (11). The base is installed on the lower structure (3), and the low-friction wear-resistant plate (21) is installed on a slider (22). The slider (22) is vertically installed on the base through a connecting rod (23). The upper end of the connecting rod (23) is a ball joint rotating body (23a). The ball joint rotating body (23a) and the slider (22) are movably installed, so that the slider (22) can rotate relative to the ball joint rotating body (23a). The friction pendulum isolator (2) can dissipate energy and buffer when vibration is generated by the sliding displacement of the slider (22) on the sliding surface (11).

2. The shock isolation device of claim 1, wherein The curvature of the sliding surface (11) is the same as the curvature of the front surface of the low-friction wear-resistant plate (21).

3. The shock isolation device of claim 1, wherein The slider (22) includes a mounting slot (22a) and a mounting base (22b). The mounting slot (22a) is fixedly mounted on the mounting base (22b). The low-friction wear-resistant plate (21) is fixedly mounted in the mounting slot (22a). A rotating groove (22c) is provided at the bottom of the mounting base (22b). The upper part of the ball joint rotating body (23a) is placed in the rotating groove (22c).

4. The shock isolation device of claim 3, wherein The mounting base (22b) has several bolt holes (22d) around the rotating groove (22c) at its bottom. The clamping clamp (22e) is inserted into the connecting rod (23) and installed from below by several bolts inserted into the bolt holes (22d) to prevent the ball joint rotating body (23a) from coming out.

5. The shock isolation device of claim 1, wherein The connecting rod (23) includes a ball joint rotating body (23a), a flange (23b) and a screw section (23c). The screw section (23c) is screwed into the lower structure (3) with a pre-set threaded hole, and a locking nut (23d) is fitted on the screw section (23c). The flange (23b) and the locking nut (23d) fasten the connecting rod (23) onto the lower structure (3).

6. The shock isolation device of claim 1, wherein, The main sliding plate (1) is a block structure fixedly installed at the bottom of the mobile building equipment (4) or the equipment shell, and a recessed edge (12) is provided at the edge of the sliding surface (11).

7. The shock isolation device of claim 1, wherein The main sliding plate (1) is equipped with several connecting mechanisms (13) on its four sides. The connecting mechanisms (13) are buckles or locking rings.

8. The shock isolation device of claim 7, wherein, The vibration isolation device is installed at least at the four corners of the bottom of the mobile building equipment (4) or the equipment shell, and is connected to the connecting mechanism (13) on the main sliding plate (1) and the lower structure (3) by a chain or steel rope; the lower structure (3) is the lower mobile building equipment (4) or equipment or ground.

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