Rigidity and damping adjustable hydraulic support vibration isolation system for building
By adopting an adjustable stiffness damping design in the hydraulic support vibration isolation system for building, the dynamic connection between oil and gas support is achieved using a three-way shutdown valve and energy accumulator, the shortcomings of existing vibration isolation equipment under the composite working requirements are solved, and efficient vibration isolation and stability in large buildings are achieved.
Patent Information
- Application Number
- CN202411722692.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-04-08
AI Technical Summary
Existing building vibration isolation equipment is difficult to meet the composite working needs of large buildings in low frequency and large gains, especially in environments with large loads and high reliability requirements.
The hydraulic support vibration isolation system for building with adjustable rigidity damping is adopted. The system includes at least two support groups, each supporting group consisting of oil and gas support, a three-way shut-off valve and an energy accumulator. The dynamic connection between the oil and gas support is realized through the design of the three-way shut-off valve and the damping characteristics are adjusted.
It realizes effective vibration isolation for large buildings within different frequency ranges, has good stability and resistance to lateral deviation, and meets the high requirements for vibration isolation performance in the building field.
Smart Images
Figure CN119777494A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a vibration isolation device, in particular to a hydraulic support vibration isolation system for buildings with adjustable stiffness and damping. Background Art
[0002] In recent years, with the continuous development of subway transportation and the continuous construction of large-scale civil engineering, the demand for vibration isolation and vibration reduction performance in the construction field has been continuously increasing. The original relatively independent rubber vibration isolators, friction sliding vibration isolators and other fixed damping passive vibration absorbers cannot meet the composite working requirements of low frequency and small gain brought by the normal external environment under normal working conditions and wide frequency and large gain brought by the external environment under abnormal working conditions due to their fixed working characteristics. Industry insiders have begun to try to explore new solutions that can be used in the construction field to achieve vibration isolation and vibration reduction effects. Summary of the invention
[0003] The technical problem to be solved by the present invention is to provide a new hydraulic support vibration isolation system for buildings with adjustable stiffness and damping and reliable vibration isolation for large buildings.
[0004] In order to solve the above technical problems, this application provides the following technical solutions:
[0005] The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping of the present invention comprises at least two support groups, each of which comprises at least one oil and gas support and at least one three-way stop valve, the first interface of the three-way stop valve of the support group is connected to the rod cavity of the oil and gas support of the support group, the second interface of the three-way stop valve of the support group is connected to the rodless cavity of the oil and gas support of the support group, the third interface of the three-way stop valve of the support group is connected to the rodless cavity of the oil and gas support of other relative support groups, and each rodless cavity of the oil and gas support is connected to an accumulator.
[0006] Furthermore, a first stop valve is provided between the third interface of the three-way stop valve of the support group and the rodless cavity of the oil and gas support of the other corresponding support group.
[0007] Furthermore, a second stop valve is provided between the rodless chamber of each oil-gas support and the accumulator of the oil-gas support.
[0008] Furthermore, the second stop valves are all two-way manual stop valves.
[0009] Furthermore, a switch valve is provided between the rodless chamber of each oil-gas support and the accumulator of the oil-gas support, and the switch valve is located upstream of the second stop valve along the oil supply direction.
[0010] Furthermore, the accumulator is a piston accumulator, and the accumulators connected to the two oil and gas supports of the same support group are connected in series with each other. Among the accumulators connected to the two oil and gas supports of the same support group, one accumulator is provided with a proximity switch and the other is provided with an induction plate.
[0011] Furthermore, a throttle valve is provided between the first interface of the three-way stop valve of the support group and the rod chamber of the oil and gas support of the support group.
[0012] Furthermore, each of the support groups also includes a pressure sensor, and the pressure sensor is used to measure the pressure of the rodless cavity of the oil and gas support of this group.
[0013] Furthermore, four support groups are provided, and the four support groups are divided into four parts: upper left, lower left, upper right, and lower right. The four support groups are respectively used to be arranged in four directions of the corresponding building.
[0014] Furthermore, each of the support groups includes two oil and gas supports.
[0015] Compared with the prior art, the hydraulic support vibration isolation system for buildings with adjustable stiffness and damping of the present invention has at least the following beneficial effects:
[0016] The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping of the present invention has a first interface of the three-way stop valve of the support group connected to the rod cavity of the oil and gas support of the support group, a second interface of the three-way stop valve of the support group connected to the rodless cavity of the oil and gas support of the support group, and a third interface of the three-way stop valve of the support group connected to the rodless cavity of the oil and gas support of other relative support groups. When the vibration isolation system of the present invention is used in a building, when the lateral deviation of the exciting source brings about a lateral deviation effect, the rodless cavity of the oil and gas support of one support group is connected to the rod cavity of the oil and gas support of the relative support group, and the hydraulic oil flows between the rod cavity and the rodless cavity of the oil and gas support of different support groups, thereby realizing a rapid response of the balanced lateral deviation force couple on the large structure, so that the whole system has good stability, better meets the vibration isolation needs of large loads and high reliability requirements in the construction field, and provides a brand-new solution for reliable vibration isolation of large buildings.
[0017] The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping of the present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The schematic diagram of the hydraulic support vibration isolation system for buildings with adjustable stiffness and damping of the present invention. DETAILED DESCRIPTION
[0019] like Figure 1As shown, the present invention is a hydraulic support vibration isolation system for buildings with adjustable stiffness and damping, including two or more support groups, each support group includes at least one oil and gas support and at least one three-way stop valve, the first interface of the three-way stop valve of the support group is connected to the rod cavity of the oil and gas support of the support group, the second interface of the three-way stop valve of the support group is connected to the rodless cavity of the oil and gas support of the support group, the third interface of the three-way stop valve of the support group is connected to the rodless cavity of the oil and gas support of other relative support groups, and each rodless cavity of the oil and gas support is connected to the accumulator. In this embodiment, four support groups are provided, namely, a first support group 01, a second support group 02, a third support group 03, and a fourth support group 04. The four support groups are divided into four parts, namely, upper left, lower left, upper right, and lower right, which are respectively arranged in four directions of the corresponding buildings. Each support group includes two oil and gas supports. Taking the first support group 01 and the second support group 02 as examples, the first support group 01 includes a first oil and gas support 11, a second oil and gas support 12, a first three-way stop valve 13, a first accumulator 14, and a second accumulator 15. The rodless cavity of the first oil and gas support 11 is connected to the first accumulator 14, the rodless cavity of the second oil and gas support 12 is connected to the second accumulator 15, the first interface of the first three-way stop valve 13 is connected to the rod cavity of the first oil and gas support 11 and the second oil and gas support 12, and the second interface of the first three-way stop valve 13 is connected to the first oil and gas support 11. The rodless cavity of the support 11 and the second oil and gas support 12, the second support group 02 includes the third oil and gas support 21, the fourth oil and gas support 22, and the second three-way stop valve 23. The first interface of the second three-way stop valve 23 is connected to the rod-equipped cavity of the third oil and gas support 21 and the fourth oil and gas support 22, the second interface of the second three-way stop valve 23 is connected to the rodless cavity of the third oil and gas support 21 and the fourth oil and gas support 22, the third interface of the first three-way stop valve 13 is connected to the rodless cavity of the third oil and gas support 21 and the fourth oil and gas support 22, the third interface of the first three-way stop valve 13 is also connected to the rodless cavity of the oil and gas support of the third support group 03, the third interface of the second three-way stop valve 23 is connected to the rodless cavity of the first oil and gas support 11 and the second oil and gas support 12, and the third interface of the second three-way stop valve 23 is also connected to the rodless cavity of the oil and gas support of the fourth support group 04. When in use, the hydraulic support vibration isolation system for buildings with adjustable stiffness and damping of the present invention is connected to a large building and arranged between the bottom of the building and the foundation to isolate the entire building from vibration. In actual use, multiple support groups can be provided as needed, and each support group may include multiple oil and gas supports. When a large number of oil and gas supports are provided, each oil and gas support can be evenly distributed at a certain angle within a range of 360 degrees in the horizontal plane. For example, when 16 oil and gas supports are provided, each oil and gas support is evenly distributed at an angle of 22.5°.
[0020] The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping of the present invention has a first interface of the three-way stop valve of the support group connected to the rod cavity of the oil and gas support of the support group, a second interface of the three-way stop valve of the support group connected to the rodless cavity of the oil and gas support of the support group, and a third interface of the three-way stop valve of the support group connected to the rodless cavity of the oil and gas support of other relative support groups. When the vibration isolation system of the present invention is used in a building, when the lateral deviation of the exciting source brings about a lateral deviation effect, the rodless cavity of the oil and gas support of one support group is connected to the rod cavity of the oil and gas support of the relative support group, and the hydraulic oil flows between the rod cavity and the rodless cavity of the oil and gas support of different support groups, thereby realizing a rapid response of the balanced lateral deviation force couple on the large structure, so that the whole system has good stability, better meets the vibration isolation needs of large loads and high reliability requirements in the construction field, and provides a brand-new solution for reliable vibration isolation of large buildings.
[0021] Optionally, a first stop valve is provided between the third interface of the three-way stop valve of the support group and the rodless cavity of the oil and gas support of the other corresponding support groups. Taking the first support group 01 and the second support group 02 as examples, first stop valves 61 and 62 are provided between the third interface of the first three-way stop valve 13 and the rodless cavity of the third oil and gas support 21 and the fourth oil and gas support 22, and between the third interface of the first three-way stop valve 13 and the rodless cavity of the oil and gas support of the third support group 03, respectively; first stop valves 63 and 64 are provided between the third interface of the second three-way stop valve 23 and the rodless cavity of the first oil and gas support 11 and the second oil and gas support 12, and between the third interface of the second three-way stop valve 23 and the rodless cavity of the oil and gas support of the fourth support group 04, respectively. Due to the provision of the three-way stop valve, each support group can be switched between being independent and being interrelated with the opposite support group by adjusting the state of the three-way stop valve, which is convenient for test comparison and experimental verification. Specifically, when the first stop valves 61, 62, 63, and 64 are in a closed state, and the third interfaces of the three-way stop valves of the first three-way stop valve 13, the second three-way stop valve 23, the third support group 03, and the fourth support group 04 are all in a closed state, the rod chamber and the rodless chamber of the oil and gas support of each support group are connected to achieve the independent support vibration reduction effect of each group; when the first stop valves 61, 62, 63, and 64 are in an open state, and the second interfaces of the three-way stop valves of the first three-way stop valve 13, the second three-way stop valve 23, the third support group 03, and the fourth support group 04 are in a closed state, the rod chamber of the oil and gas support of each support group is connected with the rodless chamber of the oil and gas support of the opposite support group, so as to achieve the effect of enhancing the anti-overturning stiffness. When each group adopts an independent vibration reduction mode, the positive and negative cavities of the oil and gas support in this group are connected and connected to the accumulator of this group. When a large force is generated externally on the oil and gas support, the length of the oil and gas support is reduced. Since the area of the rodless cavity of the oil and gas support is larger than the area of the rod cavity, when the oil and gas support is compressed, the oil is squeezed into the accumulator, the gas volume is compressed and the pressure increases, and the supporting force of the oil and gas support is increased to resist the external vibration; when the vibration reduction mode of enhancing the anti-overturning stiffness is adopted, taking the upper left group and the lower right group as an example, the third interface and the first interface of the first three-way stop valve 13 are connected, and the first stop valve 62 is opened. When a force is generated externally on the lower right group, the oil in the rodless cavity of the lower right group enters the rod cavity of the upper left group through the first stop valve 62 and the first three-way stop valve 13, so that the upper left group has a tendency to recover, thereby avoiding the large displacement difference and resistance difference of the oil and gas supports on both sides when one side is subjected to a large vibration impact and the other side is not impacted, resulting in overturning.
[0022] Optionally, a second stop valve is provided between the rodless chamber of each oil and gas support and the accumulator of the oil and gas support. Taking the first oil and gas support 11 and the second oil and gas support 12 as examples, second stop valves 16 and 17 are provided between the rodless chamber of the first oil and gas support 11 and the first accumulator 14, and between the rodless chamber of the second oil and gas support 12 and the second accumulator 15, respectively. Stop valves are also provided between the rodless chambers and accumulators of the oil and gas supports of the second support group 02, the third support group 03, and the fourth support group 04. Specifically, each second stop valve is a two-way manual stop valve. The two-way manual stop valve is used to implement emergency troubleshooting after a fault. Taking the first support group 01 as an example, when a fault is detected in a certain oil and gas support itself, the first interface of the first three-way stop valve 13 can be closed, and the first stop valve 63 and the second stop valves 16 and 17 can be closed. At this time, the rod cavity and rodless cavity of the first oil and gas support 11 and the second oil and gas support 12 of the first support group 01 are isolated from the outside world. Therefore, a closed rigid load-bearing can be used to replace another faulty product, so that the system has good performance.
[0023] Optionally, a switch valve is provided between the rodless chamber of each oil and gas support and the accumulator of the oil and gas support, and the switch valve is located upstream of the second stop valve along the oil supply direction. Taking the first oil and gas support 11 and the second oil and gas support 12 as examples, switch valves 18 and 19 are provided between the rodless chamber of the first oil and gas support 11 and the first accumulator 14, and between the rodless chamber of the second oil and gas support 12 and the second accumulator 15, respectively. The switch valve 18 is located upstream of the second stop valve 16, and the switch valve 19 is located upstream of the second stop valve 17. Switch valves are also provided between the rodless chambers of the oil and gas supports of the second support group 02, the third support group 03, and the fourth support group 04 and the accumulator. The setting of the switch valve can, on the one hand, adjust the valve opening according to the external input command to control the damping of the overall system, and on the other hand, when the accumulator fails, the switch valve can be completely closed to make the single group into a rigid bearing state so as to replace the failed product.
[0024] Optionally, the accumulator is a piston accumulator, and the piston displacement is transferred to the outside of the accumulator through the internal structure. The accumulators connected to the two oil and gas supports of the same support group are connected in series with each other. Among the accumulators connected to the two oil and gas supports of the same support group, one accumulator is provided with a proximity switch and the other is provided with a sensor plate. Taking the first support group 01 as an example, one of the first accumulator 14 and the second accumulator 15 is provided with a proximity switch and the other is provided with a sensor plate. The first accumulator 14 and the second accumulator 15 are connected in series with each other. Since the external hydraulic oil of the two accumulators connected to the two oil and gas supports of the same support group is regarded as being in series during normal operation, if one accumulator leaks, the piston position of the accumulator must have a large position difference with the other accumulator of the same support group. At this time, the proximity switch will not be able to sense and trigger an alarm, and human intervention is required for inspection, so as to facilitate timely detection of faults and maintenance. If the system stiffness does not meet the requirements, the system stiffness can be adjusted by adjusting the inflation pressure in the accumulator.
[0025] Optionally, a throttle valve is provided between the first interface of the three-way stop valve of the support group and the rod cavity of the oil and gas support of the support group. Taking the first oil and gas support 11 and the second oil and gas support 12 of the first support group 01 as an example, a first throttle valve 71 is provided between the first interface of the first three-way stop valve 13 and the rod cavity of the first oil and gas support 11 and the second oil and gas support 12, and the second throttle valve 72, the third throttle valve 73, and the fourth throttle valve 74 are provided in the second support group 02, the third support group 03, and the fourth support group 04, respectively.
[0026] Optionally, each support group further includes a pressure sensor, which is used to measure the pressure of the rodless cavity of the oil and gas support of this group. Taking the first support group 01 as an example, the first support group 01 includes a first pressure sensor 81, which is arranged on a pipeline connected to the rodless cavity of the first oil and gas support 11 and the rodless cavity of the second oil and gas support 12. The first pressure sensor 81 is used to measure the pressure of the rodless cavity of the first oil and gas support 11 and the second oil and gas support 12. The second support group 02, the third support group 03, and the fourth support group 04 are respectively provided with a second pressure sensor 82, a third pressure sensor 83, and a fourth pressure sensor 84. Since the system has no hydraulic source, it only relies on the hydraulic oil enclosed in the system to work. When the hydraulic oil leaks, the current working state can be judged by the pressure sensor and further manual investigation can be carried out.
[0027] Specifically, in the hydraulic support vibration isolation system for buildings with adjustable stiffness and damping of the present invention, double-pass seals are axially arranged at key linear motion seals, and pipe joints use 24-degree cone heavy-duty welded joints to improve the reliability of system sealing.
[0028] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.
Claims
1. A hydraulic support vibration isolation system for buildings with adjustable stiffness and damping, characterized in that: It comprises at least two support groups, each of which comprises at least one oil and gas support and at least one three-way stop valve, the first interface of the three-way stop valve of the support group is connected to the rod cavity of the oil and gas support of the support group, the second interface of the three-way stop valve of the support group is connected to the rodless cavity of the oil and gas support of the support group, the third interface of the three-way stop valve of the support group is connected to the rodless cavity of the oil and gas support of other relative support groups, and each rodless cavity of the oil and gas support is connected to an accumulator.
2. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to claim 1 is characterized in that: A first stop valve is provided between the third interface of the three-way stop valve of this support group and the rodless cavity of the oil and gas support of the other corresponding support group.
3. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to claim 2 is characterized in that: A second stop valve is provided between the rodless chamber of each oil-gas support and the accumulator of the oil-gas support.
4. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to claim 3 is characterized in that: The second stop valves are all two-way manual stop valves.
5. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to claim 3 is characterized in that: A switch valve is provided between the rodless chamber of each oil-gas support and the accumulator of the oil-gas support, and the switch valve is located upstream of the second stop valve along the oil supply direction.
6. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to claim 1, characterized in that: The accumulator is a piston accumulator. The accumulators connected to the two oil-gas supports of the same support group are connected in series with each other. Among the accumulators connected to the two oil-gas supports of the same support group, one accumulator is provided with a proximity switch and the other is provided with a sensor plate.
7. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to claim 1, characterized in that: A throttle valve is arranged between the first interface of the three-way stop valve of the support group and the rod chamber of the oil and gas support of the support group.
8. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to claim 1, characterized in that: Each of the support groups further includes a pressure sensor, which is used to measure the pressure of the rodless cavity of the oil and gas support of this group.
9. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to claim 1, characterized in that: There are four support groups, which are divided into four parts: upper left, lower left, upper right, and lower right. The four support groups are respectively used to be arranged in four directions of the corresponding building.
10. The hydraulic support vibration isolation system for buildings with adjustable stiffness and damping according to any one of claims 1 to 9, characterized in that: Each of the support groups includes two oil and gas supports.