Single-action hydraulic cylinder with internal leakage display function

Abstract

The invention discloses a single-action hydraulic cylinder with an inner leakage display function. The single-action hydraulic cylinder with the inner leakage display function comprises a cylinder body, a first screw, a second screw, an upper end cap, a piston, a piston rod, a spring, a first piston seal, a second piston seal, a plug, an air filter, an oil pointer, a sealing gasket and the like. According to the single-action hydraulic cylinder with the inner leakage display function, and the oil pointer and the plug are installed on the side face of a non-working chamber of the single-action hydraulic cylinder, and thus when trace leakage happens to the sealed piston of the single action hydraulic cylinder, the internal leakage condition of the single action hydraulic cylinder can be controlled by observing the liquid level of the oil pointer. If the liquid level exceeds a certain position, by unscrewing the plug and releasing the oil in the non-working chamber of the single-action hydraulic cylinder, oil leakage caused when the liquid level in the non-working chamber of the hydraulic cylinder is up to a certain extent can be avoided. The single-action hydraulic cylinder with the inner leakage display function is simple in structure, reliable in operation, and capable of providing the internal leakage condition of the single-action hydraulic cylinder and preventing oil leakage, thereby having a wide application prospect.

Description

technical field [0001] The invention relates to a hydraulic cylinder, in particular to a single-acting hydraulic cylinder with internal leakage display, and belongs to the field of electric and electromechanical technology. Background technique [0002] At present, hydraulic cylinders are widely used in many fields. For double-acting hydraulic cylinders, since the upper and lower working chambers are involved in the work, the slight leakage inside the hydraulic cylinder will not affect the normal operation of the hydraulic cylinder; for single-acting hydraulic cylinders, the piston and The extension of the piston rod is realized by the push of high-pressure oil, and the retraction needs to be realized by external force, such as spring force, etc., because the single-acting hydraulic cylinder has only one working chamber to participate in the work, such as the lower chamber of the single-acting hydraulic cylinder. , if there is a small amount of leakage from the seal on the p...

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Problems solved by technology

[0002] At present, hydraulic cylinders are widely used in many fields. For double-acting hydraulic cylinders, since the upper and lower working chambers are involved in the work, the slight leakage inside the hydraulic cylinder will not affect the normal operation of the hydraulic cylinder; for single-acting hydraulic cylinders, the piston and The extension of the piston rod is realized by the push of high-pressure oil, and the retraction needs to be realized by external force, such as spring force, etc., because the single-acting hydraulic cylinder has only one working chamber to participate in the work, such as the lower chamber of the single-acting hydraulic cylinder. , if there is a small amount of leakage from the seal on the piston, it enters the upper chamber of the single-acting hydraulic cylinder, and the upper chamber of the single-acting hydraulic cylinder will continue to accumulate, eventually forming external leakage and polluting the working environment. For some important workplaces, such as nuclear power plants, etc. , this situation is absolutely not allowed. Therefore, the present invention proposes a single-acting hydraulic cylinder with internal leakage display. An oil gauge and a plug are installed on the side of the non-working chamber of the single-acting hydraulic cylinder. When the single-acting hydraulic cylinder There is a small amount of leakage in the seal on the piston. By observing the liquid level of the oil level, the internal leakage of the single-acting hydraulic cylinder can be grasped. If the liquid level is higher than a certain position, release the non-working chamber of the single-acting hydraulic cylinder To prevent the liquid level in the non-working chamber of the hydraulic cylinder from reaching a certain level, resulting in oil leakage

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