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Double-stroke hydraulic oil cylinder

A hydraulic oil cylinder, double-stroke technology, applied in the field of hydraulic oil cylinder, achieves the effect of simple and compact structure, simple control oil circuit and small cylinder volume

Inactive Publication Date: 2015-11-04
FREETECH ROAD MAINTENANCE ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The large piston is assembled in the outer cylinder

Method used

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  • Double-stroke hydraulic oil cylinder

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0017] As shown in the figure: the double-stroke hydraulic cylinder is composed of piston 1, large piston 2 and outer cylinder body 3. One end of the outer cylinder is provided with a large piston rod hole and an oil port B, and the other end is provided with a piston rod hole and an oil port A. The large piston is assembled in the outer cylinder. The inside of the big piston is an oil cylinder body 4, and the big piston rod 7 is an oil pipe C, which communicates with the oil cylinder body. The end of the large piston is also provided with a piston rod hole and at least one oil port 5 . The piston is assembled in the internal oil cylinder body of the large piston, and the piston rod 6 of the piston passes through the piston rod hole on the large piston and the piston rod hole on the outer cylinder body.

[0018] As can be seen from th...

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Abstract

The invention discloses a double-stroke hydraulic oil cylinder which is composed of a piston, a large piston and an outer cylinder body. The double-stroke hydraulic oil cylinder is characterized in that a large piston rod hole and an oil opening B are formed in one end of the outer cylinder body, and a piston rod hole and an oil opening A are formed in the other end of the outer cylinder body; the large piston is assembled in the outer cylinder body, an oil cylinder body is arranged in the large piston, an oil pipe C serves as a large piston rod, and the large piston rod is communicated with the oil cylinder body; the end of the large piston is provided with a piston rod hole and at least one oil opening; and the piston is assembled in the position, in the large piston, in the oil cylinder body, and a piston rod of the piston penetrates the piston rod hole in the large piston and the piston rod hole in the outer cylinder body. The double-stroke hydraulic oil cylinder is simple and compact in structure and stable and reliable in work process, an oil channel is controlled easily, and due to a double-rod inner sleeve, the size of the whole cylinder body is small.

Description

technical field [0001] The invention relates to a hydraulic oil cylinder, in particular to a double-stroke hydraulic oil cylinder. Use the emulsified asphalt or foamed asphalt spraying system on the asphalt pavement cold recycling construction equipment as the control cylinder. Background technique [0002] During the construction of asphalt pavement cold recycling equipment, the hydraulic cylinder for controlling emulsified asphalt or foamed asphalt has three functions: spraying, closing, and clearing holes. The crude oil cylinder is designed with a spring on the internal piston rod of the ordinary oil cylinder. During the process of spraying to closing, the cylinder elongates the first-stage stroke. Due to the holes sprayed with emulsified asphalt or foamed asphalt, a large number of viscous objects are often attached, which causes the force of the cylinder to change every time during the elongation of the first-stage stroke. , but the internal structure of the cylinder i...

Claims

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Application Information

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IPC IPC(8): F15B15/17
CPCF15B15/17
Inventor 施伟斌陈启景张道忠邹海王惠文
Owner FREETECH ROAD MAINTENANCE ENG CO LTD
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