An end-wrap tube vibration damping device
A technology of vibration damping device and end-wrapped tube, which is applied in the field of pressure instruments and meters, and can solve problems such as adverse effects, vibration or vibration of end-wrapped tubes, etc.
Active Publication Date: 2018-10-19
WUHAN AVIATION INSTR
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Problems solved by technology
However, in harsh environments such as vibration and shock, the end-wrapped pipe may vibrate or shake to a large extent, which will have an adverse effect on the pressure gauge, pressure signal device, and pressure sensor installed with the end-wrapped pipe. The tube adopts vibration-reducing measures
Method used
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Embodiment
[0025] Such as figure 1 , 2 As shown, the damping device is composed of a fixed shaft, a base, a damping cylinder, an end tube, and a limit seat.
[0026] 1) Fixed shaft
[0027] The fixed axis 1 is made of stainless steel (1Cr18Ni9Ti) rod, the diameter of the lower end is Φ3mm, which is convenient for crimping with the through hole Φ3mm of the base 2 through interference fit, and a round of exciting welding is performed from the reverse side, ensuring that the fixed axis 1 is perpendicular to the base 2 The bottom plate ensures reliable connection at the same time; the diameter of the small shaft at the upper end of the fixed shaft is Φ1mm, which is used to cooperate with the through hole Φ1mm of the limit seat 5;
[0028] 2) base
[0029] The base 2 is made of stainless steel (1Cr18Ni9Ti) rod, the through hole Φ3mm on the floor is used for crimping with the base 2, and there are two through holes Φ1.8mm for easy connection with the nozzle 8; the through hole in the column...
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The invention belongs to the technical field of pressure instruments and meters, and relates to a closed-end tube vibration reduction device suitable for devices such as a pressure meter, a pressure annunciator and a pressure sensor. The closed-end tube vibration reduction device is composed of a fixed shaft (1), a base (2), a vibration reduction barrel (3), a closed-end tube (4) and a limiting seat (5); the fixed shaft (1) is fixed to the base (2), and the closed-end tube (4) is of a double-layer spiral structure and is arranged on the fixed shaft (1) in a sleeving manner; the outer layer of the segment of the double-layer spiral structure of the closed-end tube (4) is sleeved with the vibration reduction barrel (3), and the tail end of the closed-end tube (4) and a pointer (6) are fixed to the limiting seat (5); the limiting seat (5) is arranged at the upper end of the fixed shaft (1) in a sleeving manner, and the starting end of the closed-end tube (4) is bonded to the base (2) through vibration reduction glue; and the closed-end tube vibration reduction device is simple in structure, small in size, ideal in vibration reduction effect and particularly suitable for a system matched product with large vibration and impact value.
Description
technical field [0001] The invention belongs to the technical field of pressure instruments and meters, and relates to a spiral-wrapped end tube vibration damping device suitable for devices such as pressure gauges, pressure signal devices, and pressure sensors. Background technique [0002] Vibration exists in almost all systems, even accompanied by complex working conditions such as shocks, and harsh conditions such as vibrations and shocks can also cause damage to equipment in the system, causing loss of function, and even lead to more serious consequences in the system. [0003] The wrapped end tube is installed inside the pressure gauge, pressure signal device, and pressure sensor as a sensitive element for sensing system pressure changes. However, in harsh environments such as vibration and shock, the end-wrapped pipe may vibrate or shake to a large extent, which will have an adverse effect on the pressure gauge, pressure signal device, and pressure sensor installed wi...
Claims
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IPC IPC(8): F16F15/02
CPCF16F15/02
Inventor 魏中良刘明贵赖念华
Owner WUHAN AVIATION INSTR