Sequential actuation double-body hydraulic cylinder

A hydraulic cylinder, double-body technology, applied in the direction of fluid pressure actuating device, servo motor assembly, mechanical equipment, etc., can solve the problems of difficult installation and large diameter of the hydraulic cylinder, and avoid underpinning, excessive diameter, and shrinkage. The effect of installation space
CN113565828APending Publication Date: 2021-10-29大大科技(宁国)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
大大科技(宁国)有限公司
Publication Date
2021-10-29

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Abstract

The invention discloses a sequential actuation double-body hydraulic cylinder. The sequential actuation double-body hydraulic cylinder comprises a first cylinder body, a first piston, a first piston rod, a second cylinder body, a second piston and a second piston rod; the first cylinder body and the second cylinder body are correspondingly arranged in parallel; the first piston is slidably and tightly arranged in the first cylinder body for dividing an inner cavity of the first cylinder body into a first cavity and a second cavity positioned on two sides; the first piston rod is fixed on the first piston, is arranged in the first cavity, and extends out from one end of the first cylinder body; the second piston is slidably and tightly arranged in the second cylinder body for dividing an inner cavity of the second cylinder body into a third cavity and a fourth cavity positioned on two sides; and the second piston rod is fixed on the second piston, and is arranged in the third cavity. The sequential actuation double-body hydraulic cylinder can realize a larger travel to prevent bottom support caused by excessive diameter; the first piston rod and the second piston rod realize sequential actuation in a pushing state; and the sequential actuation double-body hydraulic cylinder can be disassembled in a smaller space to widen the application range.
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Description

technical field

[0001] The invention relates to the technical field of hydraulic equipment, in particular to a sequentially acting dual-body hydraulic cylinder. Background technique

[0002] When the installation space is insufficient but a hydraulic cylinder with a large stroke is required, the usual practice is to use a multi-stage hydraulic cylinder to meet the use requirements, that is, to use multiple hollow piston rods to fit together, and to use a seal between any two adjacent hollow piston rods. parts are sealed. This kind of hydraulic cylinder has a large diameter, but it is not easy to install in a special installation space.

[0003] The customer requested to develop a hydraulic cylinder for towing the cart, driving the rear wheel axle of the vehicle to move forward, so that the rear end of the upper load plate is inclined downward to contact the ground, so that the load (such as an excavator, etc.) can move up by itself bearing surface. This kind of trailer re...

Claims

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