An elastic tensile self-resetting bearing

Abstract

The present invention discloses an elastic tensile self - resetting bearing, which includes an upper limit connecting plate, a lower limit connecting plate, an upper fixing plate of the bearing, an upper movable plate of the bearing, a lower movable limit guide plate of the bearing, a spring and a spring compression guide rod. The upper limit connecting plate, the upper fixing plate of the bearing and the upper movable plate of the bearing are stacked together. The lower movable limit guide plate of the bearing is installed at the top of the lower limit connecting plate. A spring is arranged between the upper movable plate of the bearing and the lower movable limit guide plate of the bearing. The spring compression guide rod is vertically connected to the upper movable plate of the bearing and the lower movable limit guide plate of the bearing. The main beneficial effects of the present invention are as follows: through the structural design of the bearing tensile elastic self - resetting core system, not only does the bearing have the ability of seismic isolation / vibration isolation, but also no matter whether the bearing is compressed or tensioned, the spring member in the bearing is always in a compressed state. When the bearing is compressed, the spring provides bearing capacity for the bearing; when the bearing is tensioned, the spring provides self - resetting restoring force for the bearing, preventing the bearing from being damaged by tension and lift - off failure.

Description

Technical Field:

[0001] The present invention relates to a seismic isolation / vibration isolation device, and particularly to a self - resetting anti - overturning and anti - tension seismic isolation / vibration isolation bearing with self - resetting ability and anti - tension ability, which can prevent the upper structure of the bearing from overturning and the bearing from uplifting and failing. Background Art:

[0002] China is located at the intersection of the Mediterranean - South Asia seismic belt and the Circum - Pacific seismic belt. This makes China earthquake - prone, with high intensity and great destructiveness. The structural seismic isolation and shock absorption control technology is a representative innovative technology in the last century. The traditional view is that the horizontal seismic force plays a decisive role in the structural damage during an earthquake. Therefore, the horizontal seismic isolation technology is mature and widely used in engineering. The rubber seismic isolation bearing is the most typical horizontal seismic isolation bearing.

[0003] In high - intensity earthquake areas, especially near the epicenter and the seismogenic fault, the vertical seismic component is relatively large, and the destructive effect of the vertical seismic component on buildings cannot be ignored. With the development of urban rail transit, the influence of vertical vibration caused by subway operation or machine work on the response of building structures and people's living comfort is becoming more and more obvious. Therefore, the research on vertical seismic isolation / vibration isolation technology is becoming more and more important.

[0004] Most of the research and development of vertical seismic isolation / vibration isolation technology is carried out along with the research and development of vertical seismic isolation / vibration isolation bearings. The currently proposed vertical seismic isolation / vibration isolation bearings are mostly thick - layer rubber bearings or seismic isolation bearings using steel springs, which do not have vertical anti - tension and tensile elastic self - resetting abilities. When the structure is subjected to a large vertical seismic force or a large horizontal seismic force that produces a rocking effect, the bearing may enter the tensile state. When the thick - layer rubber bearing is in tension, it will be broken, and when the spring seismic isolation bearing is in tension, it may experience uplifting failure, and the control effect on the overturning effect of the upper structure is poor.

[0005] In view of the above problems, the present invention aims to design a vertical anti - tension elastic self - resetting anti - overturning seismic isolation / vibration isolation bearing, so that the seismic isolation / vibration isolation bearing not only has vertical seismic isolation / vibration isolation ability, but also has elastic self - resetting ability when the bearing is in tension, will not occur tensile failure or uplifting failure, prevent the upper structure of the seismic isolation layer from overturning, and improve the structural safety. Summary of the Invention:

[0006] The object of the present invention is to provide an elastic tensile self-resetting bearing in view of the deficiencies of the prior art, which includes an upper limit connecting plate, a lower limit connecting plate, an upper fixed plate of the bearing, an upper movable plate of the bearing, a lower movable limit guide plate of the bearing, a spring and a spring compression guide rod; wherein, the upper limit connecting plate, the upper fixed plate of the bearing and the upper movable plate of the bearing are stacked on top of each other from top to bottom, the top of the lower limit connecting plate is provided with the lower movable limit guide plate of the bearing, a spring is arranged between the upper movable plate of the bearing and the lower movable limit guide plate of the bearing, and the spring compression guide rod is vertically connected to the upper movable plate of the bearing and the lower movable limit guide plate of the bearing.

[0007] In one embodiment, the lower limit connecting plate includes a transverse plate and a deep cylinder extending upward, wherein the deep cylinder extending upward is arranged around the lower movable limit guide plate of the bearing to further limit the transverse position of the lower movable limit guide plate of the bearing.

[0008] In one embodiment, the upper movable plate of the bearing and the lower movable limit guide plate of the bearing are vertically connected by a fixed limit guide screw, and the end thread of the fixed limit guide screw is fixedly connected to the threaded protrusion of the lower limit connecting plate.

[0009] In one embodiment, the upper limit connecting plate also includes a transverse plate and a deep cylinder extending downward, and the deep cylinder extending downward is arranged outside the vertical component of the lower limit connecting plate, which can further limit the overall horizontal deformation of the bearing.

[0010] In one embodiment, there is also a reinforcing rib plate extending upward on the transverse plate of the lower limit connecting plate, and the lower movable limit guide plate of the bearing is arranged on the top of the reinforcing rib plate.

[0011] In one embodiment, the spring compression guide rod is provided with threads. After the spring compression guide rod passes through the lower movable limit guide plate of the bearing, the distance between the lower movable limit guide plate of the bearing and the upper movable plate of the bearing is adjusted by a fixed guide rod end plate and a fixed nut to apply a pre-pressure and lock it.

[0012] In one embodiment, the upper limit connecting plate and the upper fixed plate of the bearing are fixedly connected by fixing bolts.

[0013] In one embodiment, deformation mounting holes are also provided on the upper limit connecting plate. After the fixed limit guide screw passes through the deformation mounting holes, it is connected to the lower limit connecting plate of the bearing, and the fixed limit guide screw is adjusted through the deformation mounting holes.

[0014] In one embodiment, a threaded protrusion extending upward is also provided on the lower limit connecting plate of the bearing, and the fixed limit guide screw is connected to the threaded protrusion after passing through the deformation mounting holes.

[0015] In one embodiment, upper connection holes are further formed in the upper limit connection plate, and lower connection holes are formed in the lower limit connection plate.

[0016] The main advantages and beneficial effects of the present invention are as follows:

[0017] 1) When the vertical tensile elastic self-resetting anti-overturning isolation / vibration isolation bearing is in a compressed state, the upper pressure of the bearing pushes the upper limit connection plate of the bearing, the upper fixing plate of the bearing, the upper movable plate of the bearing, the spring compression guide rod, the fixed guide rod end plate and the fixed nut to move downward together. The fixed guide rod end plate is separated from the lower movable limit guide plate of the bearing, the bottom surface of the groove of the upper movable plate of the bearing is separated from the bottom surface of the nut of the fixed limit guide screw, and the spring is compressed and deformed to provide bearing capacity and restoring force. When the vertical tensile elastic self-resetting anti-overturning isolation / vibration isolation bearing is in a tensile state, the upper limit connection plate of the bearing, the upper fixing plate of the bearing, the spring compression guide rod, the lower movable limit guide plate of the bearing, the fixed guide rod end plate and the fixed nut move upward together. The lower movable limit guide plate of the bearing is separated from the threaded protrusion and the reinforcing rib plate of the lower limit connection plate of the bearing, the upper fixing plate of the bearing is separated from the upper movable plate of the bearing, and the spring is compressed and deformed to provide vertical elastic self-resetting restoring force for the bearing; through this design, it can be ensured that the bearing provides supporting force and isolation / vibration isolation ability when compressed, and has elastic self-resetting tensile ability when in tension, preventing the bearing from being damaged by tension and lifting failure.

[0018] 2) The lower extension cylinder of the upper limit connection plate of the bearing and the upper extension cylinder of the lower limit connection plate of the bearing can play a role in horizontal limit and limit the horizontal deformation of the bearing; the lower movable limit guide plate of the bearing is attached to the inner wall of the upper extension cylinder of the lower limit connection plate of the bearing, which can further limit the horizontal deformation of the bearing and improve the horizontal stability of the bearing in the tensile state.

[0019] 3) The spring compression guide rod passes through the upper fixing plate of the bearing, the upper movable plate of the bearing, the spring, the lower movable limit guide plate of the bearing, the fixed guide rod end plate and the fixed nut, and together constitutes the core system of the tensile elastic self-resetting of the bearing. Different pre-pressures can be applied to the bearing by adjusting the fixed guide rod end plate, so as to meet the pre-pressures required by different structures / devices / machines on the upper part of the bearing.

[0020] 4) The space between the threaded protrusion and the reinforcing rib plate of the lower limit connection plate of the bearing and the lower movable limit guide plate of the bearing can provide space for the downward movement of the spring compression guide rod, the fixed guide rod end plate and the fixed nut when the bearing is compressed, and can improve the out-of-plane stability of the lower movable limit guide plate of the bearing when the bearing is compressed.

[0021] 5) The upper limit connection plate of the bearing and the upper fixing plate of the bearing both reserve deformation installation holes. When the bearing is compressed and deformed, it prevents the top of the fixed limit guiding screw from colliding with the upper limit connection plate of the bearing and the upper fixing plate of the bearing, enabling the bearing to deform freely. Moreover, the fixed limit guiding screw can be adjusted by screwing through the deformation installation hole to ensure reliable contact between the bottom surface of the lower movable limit guide plate of the bearing and the threaded protrusion, the reinforcing rib plate of the lower limit connection plate of the bearing, and between the fixed limit guiding screw and the upper movable plate of the bearing.

[0022] 6) The friction between the components inside the bearing can provide a certain energy dissipation capacity for the bearing.

[0023] 7) The number of tensile elastic self - reset core systems in the bearing can be freely determined. According to the use of the bearing and the characteristics of the upper structure of the bearing, the required bearing capacity of the bearing is determined, and the required bearing capacity is assembled by using the tensile elastic self - reset core system alone / in parallel / in series.

[0024] 8) The tensile elastic self - reset core system in the bearing, the upper limit connection plate of the bearing, the lower limit connection plate of the bearing, and the fixed limit guiding screw are all detachable. All components can be processed in a standardized manner in the factory, and the components are mainly assembled by using threads or high - strength bolts.

[0025] 9) The present invention uses a vertical tensile elastic self - reset anti - overturning isolation / vibration isolation bearing, which solves the problem of poor tensile capacity of the vertical isolation / vibration isolation bearing, gives full play to the elastic self - reset tensile capacity and anti - overturning capacity of the new type of isolation / vibration isolation bearing, prevents the uplifting failure when the bearing is in tension, and further enhances the safety of the structure under the action of earthquakes and the like. Brief Description of the Drawings:

[0026] Figure 1 Reveals the overall structural schematic diagram of the elastic tensile self - reset bearing in the first embodiment;

[0027] Figure 2 Reveals the compressed working deformation diagram of the elastic tensile self - reset bearing in the first embodiment;

[0028] Figure 3 Reveals the tensile working deformation diagram of the elastic tensile self - reset bearing in the first embodiment;

[0029] Figure 4 Reveals the structural schematic diagram of the elastic tensile self - reset bearing in the second embodiment;

[0030] Figure 5 Reveals the compressed working deformation diagram of the elastic tensile self - reset bearing in the second embodiment;

[0031] Figure 6 Reveals the tensile working deformation diagram of the elastic tensile self - reset bearing in the second embodiment.

[0032] The corresponding component names represented by the numbers in the figure:

[0033] 1. Upper limit connection plate of the support; 2. Upper fixed plate of the support; 3. Upper movable plate of the support; 4. Fixed limit guide screw; 5. Spring compression guide rod; 6. Lower movable limit guide plate of the support; 7. Lower limit connection plate of the support; 8. Fixed guide rod end plate; 9. Spring; 10. Fixed bolt; 11. Upper connection hole; 12. Lower connection hole; 13. Deformation installation hole 1; 14. Reinforcing rib plate; 15. Threaded protrusion; 16. Fixed nut; 17. Deformation installation hole 2. Specific implementation method:

[0034] The above-mentioned and other features, properties and advantages of the present invention will become more obvious through the following description in conjunction with the drawings and embodiments. In the drawings, the same reference numerals always represent the same features, where:

[0035] Referring to Figure 1 and in combination with Figure 2 and Figure 3 , the elastic tensile self - reset support proposed in the first embodiment of the present invention is a vertical tensile elastic self - reset anti - overturning isolation / vibration isolation support, including an upper limit connection plate 1 of the support, an upper fixed plate 2 of the support, an upper movable plate 3 of the support, a fixed limit guide screw 4, a spring compression guide rod 5, a lower movable limit guide plate 6 of the support, a lower limit connection plate 7 of the support, a fixed guide rod end plate 8, a spring 9 and a fixed nut 16. The core system of the support's tensile elastic self - reset mainly consists of a spring compression guide rod 5 and the upper fixed plate 2 of the support, the upper movable plate 3 of the support, the spring 9, the lower movable limit guide plate 6 of the support, the fixed guide rod end plate 8 and the fixed nut 16 that are sleeved on the spring compression guide rod 5. The fixed guide rod end plate 8 is fixedly connected to the spring compression guide rod 5 through threads. By adjusting the rotation of the fixed guide rod end plate 8, the core system of the tensile elastic self - reset can be made into a whole and provide a pre - pressure for the support; the lower bottom surface of the lower movable limit guide plate 6 abuts against the threaded protrusion 15 and the reinforcing rib plate 14 of the lower limit connection plate 7 of the support. The fixed limit guide screw 4 passes through the upper movable plate 3 of the support and the lower movable limit guide plate 6 in sequence and is fixedly connected to the threaded protrusion 15 of the lower limit connection plate 7 of the support through threads. By adjusting the rotation of the fixed limit guide screw 4, the fixation of the core system of the tensile elastic self - reset and the lower limit connection plate 7 of the support is ensured; the upper limit connection plate 1 of the support is fixedly connected to the upper fixed plate of the support through a fixed bolt 10 to ensure the unity of the deformation movement of the three components, namely, the upper limit connection plate 1 of the support, the upper fixed plate 2 of the support and the spring compression guide rod 5, during the deformation process of the support.

[0036] When the vertical tensile elastic self - reset anti - overturning isolation / vibration isolation bearing is in a compressed state, the pressure on the bearing pushes the upper limit connection plate 1, upper fixed plate 2, upper movable plate 3, spring compression guide rod 5, fixed guide rod end plate 8 and fixed nut 16 of the bearing to move downward together. The fixed guide rod end plate 8 disengages from the lower movable limit guide plate 6 of the bearing, and the upper movable plate 3 of the bearing disengages from the fixed limit guide screw 4. The spring 9 is extruded by the upper movable plate 3 and the lower movable limit guide plate 6 of the bearing, resulting in extrusion deformation, providing bearing capacity and restoring force for the bearing.

[0037] When the vertical tensile elastic self - reset anti - overturning isolation / vibration isolation bearing is in a tensile state, the upper limit connection plate 1, upper fixed plate 2, spring compression guide rod 5, lower movable limit guide plate 6, fixed guide rod end plate 8 and fixed nut 16 of the bearing move upward together. The lower movable limit guide plate 6 disengages from the threaded protrusion 15 and the reinforcing rib plate 14 of the lower limit connection plate of the bearing, and the upper fixed plate 2 of the bearing disengages from the upper movable plate 3. The spring 9 is extruded by the upper movable plate 3 and the lower movable limit guide plate 6 of the bearing, resulting in extrusion deformation, providing vertical elastic self - reset restoring force for the bearing, having tensile capacity, preventing the bearing from being damaged by tension and lift - off failure.

[0038] The lower extension cylinder of the upper limit connection plate 1 of the bearing and the upper extension cylinder of the lower limit connection plate 7 of the bearing can play a role in horizontal limit, restricting the horizontal deformation of the bearing, so that the bearing only undergoes vertical deformation; the side wall of the lower movable limit guide plate 6 of the bearing fits with the inner wall of the upper extension cylinder of the lower limit connection plate 7 of the bearing, which can further restrict the horizontal deformation of the bearing; the fixing methods of the fixed limit guide screw 4 and the spring compression guide rod 5 in the bearing and their movement and deformation characteristics with the upper movable plate 3 and the lower movable limit guide plate 6 of the bearing can further improve the bearing's ability to limit horizontal deformation, especially can improve the horizontal stability of the bearing in the tensile state.

[0039] During the deformation process of the bearing, the friction between internal components can play a role in energy dissipation.

[0040] The spring 9 in the tensile elastic self - reset core system of the bearing can be a disc spring and / or a corrugated spring and / or a helical spring, and the required mechanical properties of the tensile elastic self - reset core system are obtained by stacking / combining different forms of springs.

[0041] In the bearing of Embodiment 1, two sets of tensile elastic self - reset core systems can be arranged. It can be understood that the number of required tensile elastic self - reset core systems can be calculated according to the use of the bearing and the required bearing capacity, and the required bearing capacity and deformation of the bearing are obtained through different combination methods such as parallel / series connection of the tensile elastic self - reset core systems.

[0042] Reference Figure 4 And in combination with Figure 5 And Figure 6, in the second embodiment, the difference from the first embodiment is that: in a proposed vertical tensile elastic self - reset anti - overturning isolation / vibration isolation bearing, only one set of tensile elastic self - reset core system is included. When applied in other situations, the required bearing capacity can be obtained by adjusting and designing the number of the overall bearings.

[0043] The present invention and its implementation manners are schematically described above. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention creation, design structurally similar ways and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the invention.

Claims

1. An elastic tensile self-resetting bearing, characterized in that : It includes an upper limit connecting plate (1) of the support, a lower limit connecting plate (7) of the support, an upper fixed plate (2) of the support, an upper movable plate (3) of the support, a lower movable limit guide plate (6) of the support, a spring (9) and a spring compression guide rod (5); among them, the upper limit connecting plate (1) of the support, the upper fixed plate (2) of the support and the upper movable plate (3) of the support are stacked together from top to bottom. The top of the lower limit connecting plate (7) of the support is provided with a lower movable limit guide plate (6) of the support. A spring (9) is arranged between the upper movable plate (3) of the support and the lower movable limit guide plate (6) of the support. The spring compression guide rod (5) is vertically connected to the upper movable plate (3) of the support and the lower movable limit guide plate (6) of the support; the fixed limit guide screw (4) is vertically connected to the upper movable plate (3) of the support and the lower movable limit guide plate (6) of the support. The fixed limit guide screw (4) is fixedly connected to the threaded protruding part (15) of the lower limit connecting plate (7) of the support through the thread at the end; the spring compression guide rod (5) is provided with a thread. After the spring compression guide rod (5) passes through the lower movable limit guide plate (6) of the support, the distance between the lower movable limit guide plate (6) of the support and the upper movable plate (3) of the support is adjusted by the fixed guide rod end plate (8) and the fixed nut (16), and a pre-pressure is applied and locked.

2. The elastic tensile self-resetting bearing according to claim 1, characterized in that : The lower limit connecting plate (7) of the support includes a transverse plate and an upwardly extending cylindrical body. Among them, the upwardly extending cylindrical body is arranged around the lower movable limit guide plate (6) of the support to limit the transverse position of the lower movable limit guide plate (6) of the support.

3. The elastic tensile self-resetting bearing according to claim 1, characterized in that : The upper limit connecting plate (1) of the support further includes a transverse plate and a downwardly extending cylindrical body, and its downwardly extending cylindrical body is arranged outside the upper cylindrical body of the lower limit connecting plate (7) of the support.

4. The elastic tensile self-resetting bearing according to claim 2, characterized in that : It further includes a reinforcing rib plate (14) extending upward on the transverse plate of the lower limit connecting plate (7) of the support, and the lower movable limit guide plate (6) of the support is arranged on the top of the reinforcing rib plate (14).

5. The elastic tensile self-resetting bearing according to claim 1, characterized in that: The upper limit connecting plate (1) of the support and the upper fixed plate (2) of the support are fixedly connected through a fixing bolt (10).

6. The elastic tensile self-resetting bearing according to claim 1, wherein: The upper limit connecting plate of the support is further provided with a deformed mounting hole (13), and the fixed limit guide screw (4) is connected to the lower limit connecting plate (7) of the support after passing through the deformed mounting hole (13).

7. The elastic tensile self-resetting bearing according to claim 6, characterized in that: On the lower limit connecting plate (7) of the support, there is also a threaded protruding part (15) extending upward, and the fixed limit guide screw (4) is connected to the threaded protruding part (15) after passing through the deformed mounting hole (13).

8. The elastic tensile self-resetting bearing according to claim 7, characterized in that: An upper connection hole (11) is further opened on the upper limit connecting plate (1) of the support, and a lower connection hole (12) is further opened on the lower limit connecting plate (7) of the support.

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