THREE-DIMENSIONAL ISOLATOR FOR VIBRATION-SEISMIC DUAL CONTROL

Abstract

A three-dimensional isolator for vibration-seismic dual control. The three-dimensional isolator comprises an isolator body and isolator components, wherein the isolator body comprises a plurality of middle-layer connecting plates and a plurality of rubber module units, the middle-layer connecting plates are vertically arranged at intervals, and the rubber module units are arranged on the upper surfaces and the lower surfaces of the middle-layer connecting plates in parallel and connect the middle-layer connecting plates into a whole; and the isolator components comprise cover plate components and pre-tightening pieces, the cover plate components comprise an upper cover plate, a lower cover plate and side walls which define an isolator cavity, a flange plate is arranged on the top of the side wall, a gap is reserved between the upper cover plate and the flange plate.

Claims

1. A three-dimensional isolator for vibration-seismic dual control, comprising: an isolator body, the isolator body comprising a plurality of middle-layer connecting plates and a plurality of rubber module units, the middle-layer connecting plates being vertically arranged at intervals, and the rubber module units being arranged on the upper surfaces and the lower surfaces of the middle-layer connecting plates in parallel and connecting the middle-layer connecting plates into a whole; and isolator components, the isolator components comprising cover plate components and pre-tightening pieces, the cover plate components comprising an upper cover plate, a lower cover plate and side walls which define an isolator cavity, a flange plate being arranged on the top of the side wall, a gap being reserved between the upper cover plate and the flange plate, the isolator body being fixedly arranged in the isolator cavity, and the pre-tightening piece being arranged between the flange plate and the upper cover plate in a penetrating mode so that the isolator body can be in a pre-pressing state.

2. The three-dimensional isolator for vibration-seismic dual control according to claim 1, wherein the rubber module unit comprises an upper sealing plate, a lower sealing plate and a rubber pad arranged between the upper sealing plate and the lower sealing plate, and a plurality of steel plates are arranged in the rubber pad at intervals up and down.

3. The three-dimensional isolator for vibration-seismic dual control according to claim 2, wherein a plurality of rubber module units are arranged on the upper surface and the lower surface of each middle-layer connecting plate in parallel, the upper sealing plates of the rubber module units are respectively connected with the middle-layer connecting plates located above the rubber module units, and the lower sealing plates of the rubber module units are respectively connected with the middle-layer connecting plates located below the rubber module units.

4. The three-dimensional isolator for vibration-seismic dual control according to claim 1, wherein the rubber module unit is integrally vulcanized and has standard dimensions.

5. The three-dimensional isolator for vibration-seismic dual control according to claim 2, wherein the rubber module unit is integrally vulcanized and has standard dimensions.

6. The three-dimensional isolator for vibration-seismic dual control according to claim 3, wherein the rubber module unit is integrally vulcanized and has standard dimensions.

7. The three-dimensional isolator for vibration-seismic dual control according to claim 1, further comprising an upper pre-buried plate arranged above the upper cover plate and a lower pre-buried plate arranged below the lower cover plate, wherein the upper pre-buried plate and the lower pre-buried plate are fixedly connected with the upper cover plate and the lower cover plate through bolts respectively.

8. The three-dimensional isolator for vibration-seismic dual control according to claim 7, further comprising lining plate components, wherein the lining plate components comprise a plurality of lining plates with different thicknesses, and the lining plates are inserted between the lower cover plate and the lower pre-buried plate in the state that the pre-tightening pieces are disassembled.

9. The three-dimensional isolator for vibration-seismic dual control according to claim 1, wherein the pre-tightening piece is a pre-tightening screw rod, the upper end and the lower end of the pre-tightening screw rod are tapped, a screw hole is formed in the upper cover plate, the upper end of the pre-tightening screw rod penetrates through the flange plate and is tightly connected with the screw hole of the upper cover plate, and the lower end of the pre-tightening screw rod abuts against the bottom surface of the flange plate through a gasket.

10. The three-dimensional isolator for vibration-seismic dual control according to claim 7, further comprising damping arms, wherein the lower end of the damping arm is fixed to the outer end face of the flange plate, and the upper end of the damping arm is connected with the outer end face of the upper pre-buried plate through a flexible connecting cavity.

11. The three-dimensional isolator for vibration-seismic dual control according to claim 10, wherein the flexible connecting cavity is a steel cavity formed in the outer end face of the upper pre-buried plate, rubber pads are attached to the inner wall of the steel cavity, an upper end plate is arranged at the upper end of the damping arm, the upper end plate of the damping arm is arranged in the steel cavity, and the rubber pad wraps the upper end plate.

12. The three-dimensional isolator for vibration-seismic dual control according to claim 10, wherein the damping arm is in a semicircular shape or a curved shape and is made of soft steel coated lead or soft steel.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to illustrate the technical solutions in the embodiment of the present disclosure or in the prior art more clearly, the attached figures needing to be used in the embodiment or in the description in the prior art are simply described. Apparently, the embodiments in the following description are merely a part rather than all of the embodiments of the present disclosure. For those of ordinary skill in the art, under the premise of without contributing creative labor, other attached figures further can be obtained according to these attached figures.

[0034] FIG. 1 is a structural schematic diagram of a rubber module unit in an embodiment;

[0035] FIG. 2 is a structural schematic diagram of an isolator body in an embodiment;

[0036] FIG. 3 is a front view of a three-dimensional isolator in an embodiment;

[0037] FIG. 4 is a structural schematic diagram of a three-dimensional isolator in an embodiment;

[0038] FIG. 5 is a front view of a three-dimensional isolator when lining plates are inserted in an embodiment;

[0039] FIG. 6 is a structural schematic diagram of a three-dimensional isolator when lining plates are inserted in an embodiment; and

[0040] FIGS. 7A-7M are structural schematic diagram of a rubber module unit on a middle-layer connecting plate.

[0041] Reference signs in the attached figures:

[0042] 1, middle-layer connecting plate; 2, rubber module unit; 21, upper sealing plate; 22, lower sealing plate; 23, rubber pad; 24, steel plate; 3, upper cover plate; 4, lower cover plate; 5, side wall; 6, flange plate; 7, pre-tightening piece; 8, upper pre-buried plate; 9, lower pre-buried plate; 10, lining plate; 11, damping arm; and 12, jack.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] It should be noted that the following detailed description is exemplary and aims to provide further description for the present disclosure. Except as otherwise noted, all techniques and scientific terms used in the present disclosure have same meanings generally understood by ordinary skill in the art in the present disclosure.

[0044] It needs to be noted that the terms used herein just describe the specific mode of execution, but not expect to limit the exemplary modes of execution in the disclosure. It is to be understood that the singular forms “a”, “an”, and “the” include plural referents unless the context clearly dictates otherwise. Moreover, it should be understood that the terms “contain” and/or “comprise” used in the specification indicate characteristics, steps, operations, devices, assemblies and/or their combination.

[0045] The following clearly and completely describes the technical scheme in the embodiments of the present disclosure with reference to the attached figures in the embodiments of the present disclosure. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

Embodiment I

[0046] As shown in FIG. 1 to FIGS. 7A-7M, a three-dimensional isolator for vibration-seismic dual control in the embodiment comprises an isolator body and isolator components, wherein the isolator body comprises a plurality of middle-layer connecting plates 1 and a plurality of rubber module units 2, the middle-layer connecting plates 1 are vertically arranged at intervals, and the rubber module units 2 are arranged on the upper surfaces and the lower surfaces of the middle-layer connecting plates 1 in parallel and connect the middle-layer connecting plates 1 into a whole; and the isolator components comprise cover plate components and pre-tightening pieces, the cover plate components comprise an upper cover plate 3, a lower cover plate 4 and side walls 5 which define an isolator cavity, a flange plate 6 is arranged on the top of the side wall 5, a gap is reserved between the upper cover plate 3 and the flange plate 6, the isolator body is fixedly arranged in the isolator cavity, and the pre-tightening piece is arranged between the flange plate 6 and the upper cover plate 3 in a penetrating mode so that the isolator body can be in a pre-pressing state.

[0047] As shown in FIG. 1, the rubber module unit 2 comprises an upper sealing plate 21, a lower sealing plate 22 and a rubber pad 23 arranged between the upper sealing plate 21 and the lower sealing plate 22, and a plurality of steel plates 24 are arranged in the rubber pad 23 at intervals up and down.

[0048] As shown in FIG. 2, in the isolator body, a plurality of rubber module units 2 are arranged on the upper surface and the lower surface of each middle-layer connecting plate 1 in parallel, the upper sealing plates 21 of the rubber module units 2 are respectively connected with the middle-layer connecting plates 1 located above the rubber module units 2, and the lower sealing plates 22 of the rubber module units 2 are respectively connected with the middle-layer connecting plates 1 located below the rubber module units 2.

[0049] The rubber module unit 2 can be integrally vulcanized and has standard dimensions. The specific arrangement mode of the rubber module units 2 arranged on the upper surface and the lower surface of the middle-layer connecting plate 1 in parallel is not strictly limited. The rubber module units 2 can be reasonably arranged according to actual requirements, and can be specifically seen from FIGS. 7A-7M.

[0050] In the three-dimensional isolator in the embodiment, the isolator body is formed by assembling the rubber module units 2 in a layer parallel mode through a plurality of middle-layer connecting plates 1. The rubber module unit 2 is a rubber pad with standard size and shape and is formed by integrally vulcanizing the upper sealing plate, the lower sealing plate, rubber between the upper sealing plate and the lower sealing plate, and the steel plate. The middle-layer connecting plate 1 can be made of a steel plate and is connected with the upper sealing plate 21 and the lower sealing plate 22 of the rubber module unit 2 through countersunk bolts. According to the layer parallel connection mode, the upper sealing plates 21 of the rubber module units 2 are connected with the same middle-layer connecting plate 1 on the same side, and the lower sealing plates 22 of the rubber module units 2 are connected with the other middle-layer connecting plate 1 on the same side, so that the rubber module units 2 form a group of rubber pad structures connected in parallel between the two middle-layer connecting plates 1. The group of rubber pad structures in parallel connection and other same groups of rubber pad structures in parallel connection are sequentially overlapped and are in bolted connection through the adjacent middle-layer connecting plates 1, so that the isolator body with a plurality of groups of rubber pads in parallel connection overlapped into a whole body is formed.

[0051] In the three-dimensional isolator, the isolator body adopts a plurality of rubber module units 2 with small volume to replace a traditional laminated rubber isolator to be vulcanized into an integrated rubber layer. Under the condition of the same pressure-bearing area, compared with the free side surface area of the rubber layer of the traditional laminated rubber isolator, the free side surface area of the rubber layer of the isolator body is increased by several times to tens of times, so that the layer thickness of the rubber pad 23 only needs to be slightly increased. Therefore, the first shape coefficient S.sub.1 (the ratio of the effective pressure-bearing area of a single rubber layer in the isolator to the free side surface area of the single rubber layer) can be reduced by several times to tens of times, S.sub.1 is in strong negative correlation with the vertical rigidity of the isolator, and then the vertical rigidity of the isolator can be efficiently reduced. The isolator can obtain good low-frequency vibration isolation performance, and environmental vibration of most frequency bands can be efficiently isolated.

[0052] In the three-dimensional isolator, the distance between the rubber pads of the same group of rubber pad structures in the parallel connection form of the isolator body can be increased as required, so that the overall width of the isolator body is remarkably increased under the condition of the same bearing area of the isolator and the same total thickness of the rubber layers. Therefore, the second shape coefficient S.sub.2 (the ratio of the diameter or the effective width of the inner rubber layer to the total thickness of the inner rubber layer) is remarkably increased. Meanwhile, the first shape coefficient S.sub.1 is kept unaffected. The lateral buckling prevention stability of the isolator body can be remarkably improved along with the increase of the S.sub.2 due to the fact that the S.sub.2 is in strong positive correlation with the lateral buckling prevention stability when the isolator is borne. Meanwhile, the vertical rigidity of the isolator is not affected, so that the isolator has good bearing stability.

[0053] In the three-dimensional isolator, by adopting the mode of the isolator body that the rubber pad layers of the rubber module units are connected in parallel, the defects that the height of the isolator is too large, the appearance of the isolator is too thin and high, and the lateral buckling prevention stability of the isolator is obviously weakened due to series arrangement are avoided. The defects that a steel spring is low in damping and a vibration propagation high-frequency passing phenomena exist are avoided. Meanwhile, a limiting component under the horizontal ground motions does not need to be adopted, and the defect that the vibration isolation function is lost due to rigid limit is avoided.

[0054] In the three-dimensional isolator, the rubber module unit 2 can be a rubber pad with standard size and shape and is formed by integrally vulcanizing the upper sealing plate, the lower sealing plate, rubber between the upper sealing plate and the lower sealing plate, and the steel plate. The isolator body does not need to be integrally vulcanized and formed, and the small standard module units are respectively vulcanized and then assembled to form a large isolator, so that the standardized and fabricated assembling of the isolator is realized. Compared with a mode that a traditional large rubber seismic isolator is integrally vulcanized, the manufacturing process of the isolator body is free of large-tonnage vulcanizing machine or large die mold, so that the equipment cost is greatly saved. Moreover, the isolator body adopts one or a few standardized rubber module units 2, and a great variety of overall isolator bodies with various specifications can be integrated, so that the process precision of batch production is easier to control, and the product yield is greatly improved. Moreover, due to the adoption of the small rubber module units, the steel plates and the rubber sizing material are convenient to process, and a plurality of small module units are vulcanized at the same time, so that the vulcanizing period is greatly shortened, the cost is obviously reduced, and the isolator has good popularization and application prospects.

[0055] As shown in FIG. 3 and FIG. 4, in the present disclosure, the pre-tightening piece is a pre-tightening screw rod 7, the upper end and the lower end of the pre-tightening screw rod 7 are tapped, a screw hole is formed in the upper cover plate 3, the upper end of the pre-tightening screw rod 7 penetrates through the flange plate 6 and is tightly connected with the screw hole of the upper cover plate 3, and the lower end of the pre-tightening screw rod 7 abuts against the bottom surface of the flange plate 6 through a gasket.

[0056] According to the three-dimensional isolator, the isolator body is in a pre-pressing state through the pre-tightening screw rod 7 in the transportation, site construction and installation periods. In the construction and installation process, the isolator body is always in a pre-pressing state, and the vertical deformation amount difficult to control is not released along with the gradual increase of the upper load, so that the construction elevation and accuracy are easier to control. In the service period, the pre-tightening screw rod 7 can be removed after the three-dimensional isolator is subjected to complete permanent load of the upper structure.

[0057] The three-dimensional isolator in the embodiment further comprises an upper pre-buried plate 8 arranged above the upper cover plate 3 and a lower pre-buried plate 9 arranged below the lower cover plate 4, and the upper pre-buried plate 8 and the lower pre-buried plate 9 are fixedly connected with the upper cover plate 3 and the lower cover plate 4 through bolts respectively.

[0058] As shown in FIG. 5 and FIG. 6, the three-dimensional isolator in the embodiment further comprises lining plate components, the lining plate components comprise a plurality of lining plates 10 with different thicknesses, and the lining plates 10 are inserted between the lower cover plate 4 and the lower pre-buried plate 9 in the state that the pre-tightening pieces are disassembled.

[0059] According to the three-dimensional isolator, after the pre-tightening screw rod 7 is removed in the service period, a jack 12 for jacking can be arranged between the lower side of the flange plate 6 on the side wall 5 of the isolator cavity and the upper surface of the lower pre-buried plate 9, so that the isolator body is further compressed. Meanwhile, a gap is formed between the lower cover plate 4 and the lower pre-buried plate 9, the lining plate 10 is inserted in the gap between the lower cover plate 4 and the lower pre-buried plate 9, and the lower cover plate 4 and the lower pre-buried plate 9 are fixed or welded through bolts. After installation, the deformation difference of the isolator at different parts caused by design errors and construction errors can be adjusted and eliminated by adding the lining plate 10, so that the structural safety and the using performance are ensured.

[0060] The three-dimensional isolator in the embodiment further comprises damping arms 11, the lower end of the damping arm 11 is fixed to the outer end face of the flange plate 6, and the upper end of the damping arm 11 is connected with the outer end face of the upper pre-buried plate 8 through a flexible connecting cavity.

[0061] The flexible connecting cavity is a steel cavity formed in the outer end face of the upper pre-buried plate 8, rubber pads are attached to the inner wall of the steel cavity, an upper end plate is arranged at the upper end of the damping arm 11, the upper end plate of the damping arm 11 is arranged in the steel cavity, and the rubber pad wraps the upper end plate. Moreover, the damping arm 11 is in a semicircular shape or a curved shape and is made of soft steel coated lead or soft steel.

[0062] The three-dimensional isolator further can be provided with damping arms 11. The damping arm 11 is in a semicircular shape or a curved shape and is made of soft steel coated lead or soft steel. The lower end and the upper end of the damping arm 11 can be fixedly provided with end plates respectively. The end plate at the lower end can be connected or welded with the side wall 5 of the isolator cavity through bolts, and the end plate at the upper end can be connected with the side panel of the upper pre-buried plate 8 through the flexible connecting cavity. The three-dimensional isolator has the beneficial effects that when wind flies, the damping arm 11 does not reach the material yield level, so that the three-dimensional isolator does not deform too much; when an earthquake occurs, the damping arm 11 yields the energy consumption, so that the damping energy consumption capacity of the three-dimensional isolator is improved; and when the environmental vibration occurs, most of environmental vibration cannot spread to the upper structure through the damping arm 11 in the flexible connecting cavity, so that the efficient capacity for isolating environmental vibration is ensured.

[0063] In the three-dimensional isolator in the embodiment, the isolator components may comprise an upper cover plate 3, a lower cover plate 4, side walls 5, flange plates 6, pre-tightening screw rods 7, an upper pre-buried plate 8, a lower pre-buried plate 9, lining plates 10 and damping arms 11.

[0064] The lower cover plate 4 and the side walls can be of an integral structure, and a gap is reserved between the lower side of the upper cover plate 3 and the top of the side wall 5. A flange plate 6 is arranged on the top of the side wall 5, and a through hole is formed in the flange plate 6. A screw hole is formed in the upper cover plate 3. The upper cover 3, the lower cover plate 4 and the side walls 5 define the isolator cavity, and the isolator body is fixed in the isolator cavity.

[0065] The pre-buried plates comprise the upper pre-buried plate 8 and the lower pre-buried plate 9, a screw hole is formed in the upper pre-buried plate 8, and the upper pre-buried plate 8 is pre-buried in the upper structure of the seismic isolation and vibration isolation object; and the lower pre-buried plate 9 is connected with the lower cover plate 4 through bolts.

[0066] The upper end and the lower end of the pre-tightening screw rod 7 are tapered, and the lower end is configured with a nut and a gasket. In the assembling period in factories, after the three-dimensional isolator is subjected to vertical pre-pressing, the upper end of the pre-tightening screw rod 7 is fastened with the screw hole in the upper cover plate 3 of the isolator cavity. After the lower end of the pre-tightening screw rod 7 penetrates through the through hole in the flange plate 6, the gasket and the nut on the top of the side wall 5 of the isolator cavity in sequence, the pre-tightening screw rod 7 is fastened with the nut, so that the nut abuts against the lower side of the flange plate 6 through the gasket. After the vertical pre-pressing force of the equipment is unloaded, the isolator cavity is still subjected to the tension force of the pre-tightening screw rod 7, and a pre-pressing effect of the three-dimensional isolator is maintained. In the transportation, site construction and installation periods, the pre-tightening screw rod 7 is in a fastening state. In the service period, after the three-dimensional isolator is subjected to complete permanent load of the upper structure, the pre-tightening screw rod 7 is removed.

[0067] The lining plate 10 is made of a steel plate, and different thicknesses of lining plates 10 are prepared. After the pre-tightening screw rod 7 is removed in the service period, a jack 12 for jacking can be arranged between the lower side of the flange plate 6 on the side wall 5 of the isolator cavity and the upper surface of the lower pre-buried plate 9, so that the three-dimensional isolator is further compressed. Meanwhile, a gap is formed between the lower cover plate 4 and the lower pre-buried plate, the lining plate 10 is inserted in the gap between the lower cover plate 4 and the lower pre-buried plate 9, and the lower cover plate 4 and the lower pre-buried plate 9 are fixed or welded through bolts.

[0068] The damping arm 11 is in a semicircular shape or a curved shape and is made of soft steel coated lead or soft steel. The lower end and the upper end of the damping arm 11 can be fixedly provided with end plates respectively. The end plate at the lower end is connected or welded with the side wall 5 of the isolator cavity through bolts, and the end plate at the upper end is connected with the side panel of the upper pre-buried plate 8 through the flexible connecting cavity. The flexible connecting cavity is a steel cavity fixed on the surface of the side panel of the upper pre-buried plate 8, and is formed by enclosing the outer plate, the inner plate and the side plates. The rubber pads are adhered to the inner wall of the flexible connecting cavity, and the end plate at the upper end of the damping arm 11 is enclosed and wrapped. A hole formed in the outer plate of the flexible connecting cavity is used for penetrating through the damping arm 11. The damping arm 11 is installed after the pre-tightening screw rod 7 is removed in the service period of the three-dimensional isolator.

[0069] The three-dimensional isolator for vibration-seismic dual control in the embodiment solves the problem that the traditional seismic isolator product is too high in vertical rigidity, and provides an isolator structure capable of efficiently reducing the vertical rigidity of laminated rubber. The three-dimensional isolator solves the problem that the existing isolator for vibration-seismic dual control is low in stability, and provides an isolator structure maintaining the integral stability of the rubber isolator under the design of low vertical rigidity. The three-dimensional isolator solves the problem that the existing isolator for vibration-seismic dual control is too low in steel component damping, has a high-frequency passing phenomena and is interfered with lateral limit, and provides an isolator structure which is high in damping ratio, can avoid the high-frequency passing phenomena and is free of lateral limit. The three-dimensional isolator solves the problem that the existing large isolator for vibration-seismic dual control is too high in manufacturing process requirement, low in control precision and high in cost, and provides an isolator structure which is controllable in process flow, lower in cost and convenient in popularization and application. The three-dimensional isolator solves the problem that the existing isolator for vibration-seismic dual control is difficult for deformation control of the isolator in the construction process and the height of the isolator is difficult to adjust after construction, and provides an isolator structure with controllable isolator deformation and adjustable height after the isolator is installed.

[0070] Finally, it should be noted that the foregoing embodiments are merely intended for describing the technical solutions of the present disclosure, but not for limiting the present disclosure. Although the present disclosure is described in detail with reference to the foregoing embodiments, a person of ordinary skill in the art should understand that they may still make modifications to the technical solutions described in the foregoing embodiments or make equivalent replacements to some or all technical features thereof, without departing from the scope of the technical solutions of the embodiments of the present disclosure.