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A double-acting fast hydraulic cylinder

A hydraulic cylinder and double-acting technology, which is applied in the field of hydraulic cylinders, can solve the problems of large structure and increased production costs, and achieve the effects of reducing production costs, prolonging service life and reducing weight

Active Publication Date: 2017-07-28
FUJIAN LONGYAN SHENGTONG HYDRAULIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing fast hydraulic cylinders have a relatively fast speed when working, and the return stroke is realized by increasing the diameter of the piston rod, so that the structure becomes huge and the production cost is increased.

Method used

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  • A double-acting fast hydraulic cylinder
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Embodiment Construction

[0008] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

[0009] like figure 1 As shown, a double-acting fast hydraulic cylinder includes a cylinder barrel 1, a large piston rod 2, and a small piston rod 3, wherein the large piston rod includes a large piston, and the small piston rod includes a small piston, and the large piston rod 2 is nested in the An oil-free chamber 4 is formed in and between the cylinder 1, omitting the sealing problem of the large piston rod, and its end is fixed on the cylinder 1 by a pressure ring 5, and the small piston rod 3 is nested in the large piston The first oil liquid chamber 11 and the third oil liquid chamber 13 are formed in the rod 2 and between the large piston rod 2, and a guide sleeve 6 is arranged between the two ends of the small piston rod 3 and the large piston rod 2, and the small piston An oil guide tube 7 is arranged ...

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Abstract

The invention discloses a double-acting fast hydraulic cylinder, which comprises a cylinder, a large piston rod and a small piston rod. The large piston rod is nested in the cylinder and forms an oil-free chamber with the cylinder, and its end is fixed by a pressure ring. On the cylinder, the small piston rod is nested in the large piston rod and forms the first oil chamber and the third oil chamber with the large piston rod. The two ends of the small piston rod and the large piston rod There is a guide sleeve between them, an oil guide pipe is arranged inside the small piston rod, a second oil liquid chamber is formed between the large piston rod and the small piston rod and the cylinder, and the first oil inlet and the second oil inlet are arranged on the small piston rod. The front end of the cylinder is provided with a third oil inlet, the cylinder is provided with an exhaust port communicating with the oil-free chamber, and the exhaust port is provided with a vent screw plug. Due to the above structure, the double-acting Compared with the existing ordinary oil cylinder, the fast hydraulic cylinder has a more compact overall structure, not only has a large thrust, has a fast working speed, but also has a fast return speed, which improves the normal operation rate of mechanical equipment.

Description

technical field [0001] The invention relates to the technical field of hydraulic oil cylinders, in particular to a double-acting fast hydraulic cylinder. Background technique [0002] Fast hydraulic cylinders are often used on mechanical equipment that requires both greater thrust and faster work speed. It is mainly composed of a piston cylinder and a plunger cylinder. The existing high-speed hydraulic cylinder has a relatively fast speed when it is working, and it is realized by increasing the diameter of the piston rod when it is returning, so that the structure becomes huge and the production cost is increased. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings in the prior art, the object of the present invention is to provide a double-acting fast hydraulic cylinder, which drives a large piston cylinder through a small piston cylinder to realize a fast return stroke. Thereby reducing the diameter of the large piston rod and reduci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/16
Inventor 刘达兴郑龙海沈马炳生吴芹兰魏祥祯
Owner FUJIAN LONGYAN SHENGTONG HYDRAULIC
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