Unlock instant, AI-driven research and patent intelligence for your innovation.

A piston rod structure for connecting multiple hydraulic cylinders

A double-acting hydraulic cylinder and piston rod technology, applied in the field of hydraulic machinery, can solve the problems of difficult oil circuit installation, affecting work progress, and occupying a large space, and achieves the effects of good applicability, improved efficiency and good compactness

Active Publication Date: 2017-12-29
临海市晨光机床厂
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing hydraulic mechanical system, it is often necessary to use one or more single-acting hydraulic cylinders and double-acting hydraulic cylinders in series, but whether it is a double-acting hydraulic cylinder or a single-acting hydraulic cylinder, it is necessary to install oil circuits around the cylinder body. It takes up a lot of space. In some places where the space is relatively small, it is difficult to install the oil circuit, which affects the work and has poor applicability.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A piston rod structure for connecting multiple hydraulic cylinders
  • A piston rod structure for connecting multiple hydraulic cylinders
  • A piston rod structure for connecting multiple hydraulic cylinders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as Figure 1-4 As shown, the piston rod structure used to connect multiple hydraulic cylinders includes a piston rod 1, the piston rod 1 is made of seamless steel pipe, the piston rod 1 is provided with a main oil passage 1a, and the main oil passage 1a runs through the piston both ends of rod 1. The piston rod 1 is provided with at least one group of secondary oil passages 3 along the axial direction. In this embodiment, the secondary oil passage group 3 is one group, and according to requirements, the secondary oil passage group 3 may be in multiple groups.

[0035] Such as figure 1 As shown, the main oil passage 1a is used to connect with the single-acting hydraulic cylinder 1-2. The hydraulic oil is supplied to the single-acting hydraulic cylinder-2 to realize the work of the single-acting hydraulic cylinder-2, and the single-acting hydraulic cylinder-2 is reset by the spring 7.

[0036] Such as Figure 1-2 As shown, the piston rod 1 is also fixed with a p...

Embodiment 2

[0040] The structure of this embodiment is basically the same as that of Embodiment 1, the difference is: Figure 5-7 As shown, the piston rod 1 is provided with at least one group of secondary oil passages 3 and at least one secondary oil passage three 6 in the axial direction. In this embodiment, the secondary oil passage group 3 and the secondary oil passage three 6 are one set, of course, according to the requirements, multiple sets of secondary oil passage groups 3 and multiple secondary oil passage three 6 can also be provided. The structure of the secondary oil passage group 3 is the same as that of the secondary oil passage group 3 in the first embodiment. The piston rod 1 is also fixed with at least one piston body 2 10, the number of the piston body 2 10 is the same as the number of the single-acting hydraulic cylinder 2 9 and the inner cavity corresponding to the single-acting hydraulic cylinder 2 9 can be divided into an oil chamber 9a And the oil-free chamber 9b,...

Embodiment 3

[0043] The structure of this embodiment is basically the same as that of Embodiment 1, the difference is: Figure 8-9 As shown, the piston rod 1 is provided with at least one secondary oil passage 3 6 in the axial direction, the secondary oil passage 3 6 is used to connect with the single-acting hydraulic cylinder 2 9, the structure of the secondary oil passage 3 6 and the The structures of the connected single-acting hydraulic cylinders 2 and 9 are the same as those in Embodiment 2. In this implementation, one secondary oil passage 3 6 is set, and of course, a plurality of secondary oil passage 3 6 can also be provided according to requirements.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a piston rod structure used for connecting a plurality of hydraulic cylinders and belongs to the technical field of hydraulic machinery. The existing problem of difficult oil pipeline mounting in occasions with small space is solved. The piston rod structure used for connecting the plurality of hydraulic cylinders comprises a piston rod, wherein a main oil pipeline connected with a single acting hydraulic cylinder I is formed in the piston rod, an auxiliary oil pipeline group and / or auxiliary oil pipeline III is arranged on the piston rod in the axial direction, a piston body I and / or a piston body II is fixedly arranged on the piston rod, an inner cavity corresponding to a double-acting hydraulic cylinder is divided into an upper oil cavity and a lower oil cavity by the piston body I, the auxiliary oil pipeline group can separately communicate with the upper oil cavity and the lower oil cavity, an inner cavity corresponding to a single acting hydraulic cylinder II can be divided into an oil cavity and an oilless cavity by the piston body II, and the auxiliary oil pipeline III communicates with the oil cavity. A plurality of hydraulic cylinders can be connected on one piston rod in series by the piston structure. The piston structure is great in structural compactness, is suitable for occasions with small spaces, is great in adapability, is convenient to mount and use, and improves the work efficiency.

Description

technical field [0001] The invention belongs to the technical field of hydraulic machinery, and relates to a piston rod structure, in particular to a piston rod structure for connecting multiple hydraulic cylinders. Background technique [0002] Single-acting hydraulic cylinder means that the movement in one direction is realized by oil pressure, and the return is by external force such as self-weight or spring. Only one end of the two chambers of this type of oil cylinder has oil, and the other end is in contact with air. This type of oil cylinder only Can generate thrust. For example, Chinese patent application (application number: 201120421807.4) discloses a single-acting hydraulic cylinder, which includes a cylinder, a cylinder cover and a piston rod. The body is divided into a rod cavity and a rodless cavity. In the rodless cavity, at least one first elastic element is arranged along the length direction of the hydraulic cylinder. One end of the first elastic element i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/20F16J7/00
CPCF15B15/1457
Inventor 卢冠峰卢成钢
Owner 临海市晨光机床厂