A limit damper with variable inertia
A damper and position-limiting technology, applied in the direction of building types, buildings, building components, etc., can solve the problems that it is difficult to meet the multi-stage shock absorption and energy dissipation requirements, and the damper is not adjustable, so as to achieve simple structure and low energy consumption. Ability to improve, improve the effect of energy consumption effect
Active Publication Date: 2021-06-04
TONGJI UNIV
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Problems solved by technology
[0004] However, the energy dissipation effect of the damper using the inerter needs to increase the additional mass of the damper, and most of the dampers using the inerter are not adjustable, and cannot realize their own inertia adjustment for different dynamic characteristics, and it is difficult to meet multiple requirements. Stage shock absorption and energy dissipation requirements
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[0036] Such as figure 1 , a limit damper with variable inertia, consisting of a fixed support 1, a wave-shaped mild steel 2, a rubber pad 3, a liquid cylinder 4, an electromagnetic coil 5, a first outer spiral pipe 6, and a second outer spiral pipe 7 , a first flow switch valve 8, a second flow switch valve 9, a magneto-rheological fluid 10, a connecting piece 11, and a piston rod 12.
[0037] Fix the fixed support 1 on the lower structure, then install the piston rod 12 between the two fixed supports 1, and install the liquid cylinder 4 in the middle of the piston rod 12, so that the piston head is inside the liquid cylinder 4, and the inner wall of the liquid cylinder is wound An electromagnetic coil 5 is installed, and the end of the liquid cylinder 4 is connected with the first outer spiral pipe 6 and the second outer spiral pipe 7, wherein a first flow switch valve 8 is installed at the connection between the liquid cylinder 4 and the first outer spiral pipe 6, and the li...
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The invention relates to a limit damper with variable inertial capacity, which comprises a fixed support, a piston, a wave-shaped mild steel buffer limit device, and a liquid cylinder. The fixed support is installed on a shock absorbing structure, and the piston is installed on Between the two fixed supports, the magnetorheological fluid cylinder is installed in the middle of the piston; the cylinder is filled with magnetorheological fluid, the inner wall of the container is equipped with electromagnetic coils, and the outer wall of the container is surrounded by two circles of outer spiral pipes with different cross-sectional diameters , there is a switch valve between the outer spiral pipe and the container; the wave-shaped mild steel buffer limit device is installed on a fixed support. The device can realize the adjustable inertia of the inerter, so as to produce high-efficiency damping effects for different power inputs. The wave-shaped mild steel buffer limit device installed on the fixed support can be used when the shock-absorbing structure produces a large displacement. Work together with the hydraulic cylinder to form a multi-stage energy consumption combination and avoid greater displacement of the structure.
Description
technical field [0001] The invention relates to the technical field of structural energy dissipation and shock absorption, in particular to a limit damper with variable inertia capacity. Background technique [0002] Vibration is one of the main threats faced by civil engineering structures during their use. Vibration caused by environmental factors and building use will not only lead to a decrease in the comfort of the structure; in addition, severe vibration will also lead to structural damage, causing serious losses to people's lives and property, and causing serious social impact. Damper is a commonly used structural energy dissipation and shock absorbing element. It occupies a small volume and has obvious vibration damping effect. Extensive research and practice have been carried out from the perspective of structure and materials, and various new dampers with new structures and new materials have been developed. [0003] Inertia is a new type of structural control el...
Claims
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IPC IPC(8): E04H9/02E04B1/98
CPCE04H9/021E04B1/98
Inventor 鲁正周映旻张迁迁
Owner TONGJI UNIV