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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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 reconfigu...

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.

Application Domain

Fluid pressure measurement using pistonsVacuum gauge using compression chambers +1

Technology Topic

Piston cylinderMechanical engineering

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[0012] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further explained in conjunction with specific drawings.

[0013] See figure 1 , figure 1 It is a schematic structural 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 provided at the top of the piston rod 200. The piston rod 200 is provided with one end of the piston rod tray 210 extending into the piston cylinder 100 in. When working, when it is necessary to install or reduce the number of weights, if the operation has been improperly caused a large deviation in verticality, and the piston rod 200 cannot withstand the large deviation angle, the piston rod may break. Why is there a large deviation angle? Since the height of the hanging basket is 157mm, the gap between the inner hole and the diameter of the piston seat is 25mm. At this time, the piston pressure gauge loses its detection function and can only be equipped with piston rods and cylinders, but it is expensive and has a certain period of recovery, which affects normal operations and delays work.

[0014] See figure 2 , figure 2 It is a schematic diagram of the structure of the present invention.

[0015] A piston mechanism with a breakage protection device includes a piston cylinder 100, a piston rod 200, and a detachable piston rod tray 210 arranged at the top of the piston rod 200. One end of the piston rod 200 with the piston rod tray 210 extends into the piston In the cylinder 100, the piston rod 200 is also provided with a damage protection sleeve 220, the damage protection sleeve 220 is sleeved outside the piston rod 200, and the distance between the outer wall of the damage protection sleeve 220 and the inner wall of the piston cylinder 100 is less than 3 mm, and In one of the preferred modes of the present invention, the distance between the outer wall of the breakage protective sleeve 220 and the inner wall of the piston barrel 100 is less than 1.5 mm.

[0016] The damage protection sleeve 220 is connected to the outer wall of the piston rod 200 through the bearings 230 at both ends, and the damage protection sleeve 220 can also be connected to the outer wall of the piston rod 200 through keys at both ends.

[0017] The beneficial effect of the present invention is that the piston rod breakage protection device is installed to reduce the gap difference between the inner hole and the piston seat to 1.5 mm, so that if the piston rod is not broken under the same conditions, Ensure the normal operation of the piston pressure gauge.

[0018] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and the description only illustrate the principles of the present invention. The present invention will have various aspects without departing from the spirit and scope of the present invention. Various changes and improvements, these changes and improvements fall within the scope of the claimed invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

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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

AI-Extracted Technical Summary

Problems solved by technology

Abstract

Image

Examples

Example Embodiment

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Description & Claims & Application Information

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