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Piston mechanism with breakdown protection device

A piston mechanism and protection device technology, applied in the field of pressure vacuum gauges, can solve problems such as delays in work, cycle recovery, and influence on normal operations, and achieve the effect of ensuring normal operation

Inactive Publication Date: 2013-08-21
SHANGHAI JIANZHOU MACHINERY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the piston pressure gauge loses its detection function, and the piston rod and piston barrel can only be reconfigured. However, the price is expensive, and there is a certain period of recovery, which affects normal operations and delays work.

Method used

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Embodiment Construction

[0012] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0013] see figure 1 , figure 1 It is a structural schematic diagram of a piston mechanism in the prior art, including a piston cylinder 100, a piston rod 200 and a detachable piston rod tray 210 arranged at the top of the piston rod 200, and one end of the piston rod 200 provided with the piston rod tray 210 extends into the piston cylinder 100 middle. During work, when it is necessary to install additional weights or reduce the number of weights, if there is a large deviation in verticality due to improper operation, the piston rod 200 cannot bear the large deviation angle, and the piston rod will be broken. Why there is a large deviation angle, because the height of the hanging basket is 157MM, the gap between the inner hole and the diameter...

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Abstract

The invention relates to a piston mechanism with a breakdown protection device. The piston mechanism with the breakdown protection device comprises a piston cylinder, a piston rod and a detachable piston rod tray arranged at the top end of the piston rod, one end, provided with the piston rod tray, of the piston rod stretches into the piston cylinder, a breakdown protection sleeve is further arranged on the piston rod, the breakdown protection sleeve is arranged outside the piston rod in a sleeved mode, and the distance between the outer wall of the breakdown protection sleeve and the inner wall of the piston cylinder is less than 3 millimeters. The piston mechanism with the breakdown protection device has the advantages that due to the addition of the breakdown protection device of the piston rod, the clearance between the inner hole of the breakdown protection device of the piston rod and a piston seat is enabled to be reduced to 1.5 millimeters. Therefore, the piston rod is enabled not to be broken under the same situation, and normal operation of a piston-type pressure gauge is ensured.

Description

technical field [0001] The invention relates to a pressure vacuum gauge, in particular to a piston mechanism with a breakage protection device of the pressure vacuum gauge. Background technique [0002] In the prior art, the piston mechanism of the pressure vacuum gauge generally stands on the base surface of the piston pressure gauge, and is perpendicular to the horizontal position with the base surface. The top is equipped with a detachable piston rod tray and a piston barrel. There is a standard fit gap between the piston rod and the piston barrel. The piston rod can move up and down and rotate in the piston barrel. When working, put on the hanging basket and add weights according to the measurement requirements on the hanging basket. When the piston rod is affected by the hydraulic force, the piston rod is pushed to the required level. At this time, it is necessary to add or reduce the number of weights. , If the operation has been improper and there is a large deviatio...

Claims

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Application Information

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IPC IPC(8): G01L7/16G01L21/02F16J7/00
Inventor 陆国清
Owner SHANGHAI JIANZHOU MACHINERY EQUIP
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