Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery

A technology of hydraulic oil cylinder and hydraulic oil circuit, which is applied in the field of material pumping system and construction machinery, can solve the problems of long size of hydraulic oil cylinder and large space occupation, and achieve the effect of reducing the length of the structure, improving the productivity and reducing the length of the structure.

Inactive Publication Date: 2012-09-19
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the size of the hydraulic cylinder is too long and occupies a large space in the existing technology of the concrete return piston, the present invention provides a new type of hydraulic cylinder

Method used

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  • Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery
  • Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery
  • Hydraulic oil cylinder, hydraulic oil circuit, material pumping system, and engineering machinery

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Embodiment Construction

[0046] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0047] Such as Figure 6 and Figure 7As shown, the embodiment of the present invention provides a hydraulic oil 300, including a cylinder 4, a piston 6 and a piston rod 5 installed in the cylinder 4, and the two ends of the cylinder 4 pass through the first end cover 71 and the The second end cover 72 is sealed, and one end of the piston rod 5 is installed on the piston 6, and the other end passes through the first end cover 71. The piston 6 divides the interior of the cylinder 4 into a first chamber and a second chamber, and also includes a The limit pisto...

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Abstract

The invention provides a hydraulic oil cylinder used for a material pumping system. The hydraulic oil cylinder comprises a cylinder barrel, a piston and a piston rod installed in the cylinder barrel; two ends of the cylinder barrel are sealed by a first end cover and a second end cover; one end of the piston rod is arranged on the piston while the other end of the piston rod passes through the first end cover; the inner part of the cylinder barrel is divided into a first cavity and a second cavity by the piston; the invention also comprises a limit piston and a limit piston fixing rod, wherein one end of the piston rod is provided with a blind hole in which the limit piston fixing rod can be inserted; the limit piston can reciprocate on the limit piston fixing rod. The invention also provides a hydraulic oil circuit, a material pumping system and an engineering machinery. According to the technical scheme of the invention, the length of the hydraulic oil cylinder is effectively shortened, the installation space of the pumping system is reduced, the manufacture of the hydraulic oil cylinder and connection of oil pipes are facilitated, the concrete pistons are more convenient and faster to clean and replace, and the continuity of the cement pumping work and the production efficiency are enhanced remarkably.

Description

technical field [0001] The invention relates to the field of construction machinery, and more specifically, to a hydraulic oil cylinder, a hydraulic oil circuit containing the hydraulic oil cylinder, a material pumping system containing the hydraulic oil circuit, and construction machinery. Background technique [0002] In the concrete conveying equipment, the concrete piston is a vulnerable part and needs to be replaced frequently. However, since the concrete piston is completely in the conveying cylinder in the normal state (working state), when it needs to be replaced, the concrete piston must be retracted from the conveying cylinder into the water tank. Do not disassemble, replace or maintain until after neutralization. [0003] Such as figure 1 As shown, at present, the typical structure is that the concrete piston 2 is connected to the piston rod 5 through the intermediate connecting rod 20 . When the concrete piston 2 needs to be disassembled, first remove the inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B53/16F04B53/14F04B53/00F04B15/02
Inventor 黄勃徐鑫尹腾飞
Owner SANY HEAVY IND CO LTD (CN)
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