Ultra-low frequency vibration isolation device based on reed and cross spring system
An ultra-low frequency and cross technology, applied in the field of ultra-low frequency vibration isolation devices, can solve the problems of short mechanical natural vibration period of the spring vibration isolation system, and achieve ideal vibration isolation effect, good technical support, and convenient operation
Active Publication Date: 2017-12-05
INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION +1
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, provide an ultra-low frequency vibration isolation device based on the reed and cross spring system, and solve the problem that the mechanical natural vibration period of the spring vibration isolation system is relatively short
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[0050] Below in conjunction with accompanying drawing and embodiment this device is described in detail:
[0051] 1. Overall of the device
[0052] Such as figure 1 , the device includes feedback circuit 0, feedback system 1, base splint 2, cross spring system 3, reed 4, fixed reed clip 5, moving splint 6, reflecting prism 7, moving reed clip 8, zero adjustment screw 9 and base 10;
[0053] Its location and connection relationship are:
[0054] A base splint 2 is vertically arranged on the base 10;
[0055] The left and right ends of the reed 4 are respectively fixed on the left side of the movable splint 6 and the right side of the base splint 2 through the movable reed clip 8 and the fixed reed clip 5;
[0056] The left side of the reflective prism 7 and the moving plate splint 6 is connected by screws;
[0057] The cross spring system 3 is respectively fixed on the base splint 2 and the moving piece splint 6;
[0058] There is a zero adjustment screw 9 under the movin...
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The invention discloses an ultralow-frequency vibration isolation device based on a spring and a cross spring system and relates to the technical field of absolute gravity measurement. The device is characterized in that a base clamping plate is vertically arranged on a base; the left end and the right end of the spring are fixed on the left side of a movable spring clamping plate and the right side of the base clamping plate through a movable spring clamp and a fixed spring clamp respectively; a reflecting prism is connected to the left side of the movable spring clamping plate through a screw; the cross spring system is fixed on the base clamping plate and the movable spring clamping plate respectively; a zero setting screw is arranged below the movable spring clamping plate; a feedback system is arranged at the upper end of the base clamping plate; and a coil of the feedback system is connected with a feedback circuit. Compared with the prior art, the device provided by the invention has the following advantages: the device is simple in structure and convenient to operate, an entire vibration isolation system has an ideal vibration isolation effect on 3-6 s micro-tremor signals by virtue of the feedback circuit, and a favorable technical support is provided for development of a high-precision absolute gravity meter.
Description
technical field [0001] The invention relates to the technical field of absolute gravity measurement, in particular to an ultra-low frequency vibration isolation device based on a reed and cross spring system. Background technique [0002] The vibration isolation system is one of the key technologies of the absolute gravimeter. The vibration isolation capability of the vibration isolation system restricts the observation accuracy of the absolute gravimeter. At the same time, the vibration isolation system also has a wide range of applications in the fields of aerospace, optics, machining, medical treatment and manufacturing. application. [0003] The spring vibration isolation system is the most common vibration isolation system at present. The long-period spring vibration isolation system mainly includes the active vibration isolation system and the mechanical negative stiffness spring vibration isolation system. The typical representative of active vibration isolation is t...
Claims
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IPC IPC(8): G01V7/02F16F15/04
CPCF16F15/046G01V7/02
Inventor 周云耀吕永清马鑫吴欢齐军伟
Owner INST OF EARTHQUAKE CHINA EARTHQUAKE ADMINISTRATION