Large load low stiffness speed limit device
A technology of limiting device and low stiffness, applied in the direction of spring, shock absorber, spring/shock absorber, etc., can solve the problems of increasing the overall stiffness and reducing the overall vibration isolation effect of the floating raft shock absorber, and achieves a small size. , light weight, easy installation effect
Inactive Publication Date: 2018-01-23
NO 719 RES INST CHINA SHIPBUILDING IND
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Problems solved by technology
[0006] On this basis, in order to meet the large limit force requirements of the floating raft damping device, the limit device must have sufficient rigidity, which will increase the overall stiffness of the floating raft damping device and ultimately reduce the buoyancy. Overall vibration isolation effect of raft vibration damping device
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[0022] Referring to the accompanying drawings, the large-load low-rigidity speed-limiting device includes: a steel structure support 1, a rubber block 2 and a hydraulic component 3;
[0023] The hydraulic components include: hydraulic cylinder 3, end cover 6, piston rod and valve assembly; the valve assembly includes: valve chamber 17, valve block 19, retaining ring 18 and coil spring 20; valve block 19 is divided into upper and lower parts, each The end face and the side wall are provided with a hydraulic oil channel connected with the central hole; the coil spring 20 is sleeved on the outer wall of the valve block 19, and the middle position of the inner wall of the valve cavity 17 is provided with an annular boss, and the two valve blocks with the coil spring 20 are set 19 is installed in the valve cavity 17, respectively located on the upper and lower sides of the annular boss, and one end of which is sleeved with a coil spring 20 is opposite (at this time, one end of the c...
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The invention belongs to the technical field of vibration noise control and particularly relates to a limiting device. According to the technical scheme of a large-load and low-rigidity speed type limiting device, the device comprises a steel structure support, a rubber block and a hydraulic assembly; the hydraulic assembly comprises a hydraulic cylinder, end covers, a piston rod and a valve body assembly; and the steel structure support, the rubber block and the hydraulic assembly form a vibration isolation assembly which is mainly used for isolating transmission of vibration of a buoyant raft damping device to a base. The hydraulic assembly is mainly used for controlling the displacement of the buoyant raft damping device when the buoyant raft damping device is swung and impacted. The large-load and low-rigidity speed type limiting device can guarantee that the vibration isolation effect of the buoyant raft damping device is not affected; under the condition that the buoyant raft damping device is swung and impacted, the displacement of a raft frame of the buoyant raft damping device can be effectively controlled, and it is guaranteed that the swing stability and the anti-impact stability of the buoyant raft damping device meet the technical index requirement.
Description
technical field [0001] The invention belongs to the technical field of vibration and noise control, in particular to a limiting device. Background technique [0002] In order to effectively reduce the impact of vibration on the surrounding environment during the operation of large mechanical equipment, single-layer vibration isolation devices, double-layer vibration isolation devices, small and medium-sized floating raft vibration reduction devices, and large floating raft vibration reduction devices are generally used. In the design process of the above-mentioned vibration damping device, low-stiffness shock absorbers are generally used to ensure that their vibration isolation effect on mechanical equipment meets the technical index requirements, which will lead to a significant decrease in the swing stability and impact resistance of the vibration damping device. [0003] Usually, when the sway stability and impact resistance of the vibration damping device do not meet the...
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IPC IPC(8): F16F9/58F16F13/06
CPCF16F9/58F16F13/06F16F2238/00
Inventor 张胜业余永丰夏孟龙蒋士亮张苗刘远国朱海雄强磊
Owner NO 719 RES INST CHINA SHIPBUILDING IND