Unidirectional plunger type oil cylinder of hydraulic press

A hydraulic press, plunger technology, applied in punching machines, presses, fluid pressure actuating devices, etc., can solve problems such as damage to cylinders and plunger rods

Inactive Publication Date: 2012-07-18
TIANJIN TIANDUAN PRESS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this type of connection, when the hydraulic machine is used for eccentric load processing conditions, the plunger rod will deflect in the axial directi...

Method used

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  • Unidirectional plunger type oil cylinder of hydraulic press
  • Unidirectional plunger type oil cylinder of hydraulic press
  • Unidirectional plunger type oil cylinder of hydraulic press

Examples

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Embodiment Construction

[0015] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0016] see Figure 1-2 , a one-way plunger cylinder for a hydraulic machine, including a cylinder body 2 installed on the upper beam 1 of the hydraulic machine, a plunger rod 3 placed in the cylinder body, and a guide structure and a seal between the plunger rod and the inner wall of the cylinder body . The lower end of the plunger rod is formed with a cylindrical cavity, and the first spherical pad 4 and the spherical column 5 forming a spherical fit are arranged in the cylindrical cavity from top to bottom, and the first spherical pad is fixed in the cylindrical cavity by screws. bottom end. The spherical column protrudes from the lower end of the plunger rod, and its exterior is covered with a support sleeve 6 fixed on the lower end of t...

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PUM

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Abstract

The invention relates to a unidirectional plunger type oil cylinder of a hydraulic press, which comprises a cylinder body, a plunger rod, a guide structure and a sealing element, wherein the guide structure and the sealing element are arranged between the cylinder body and the plunger rod, the unidirectional plunger type oil cylinder is characterized in that a cylindrical cavity is processed on the lower end of the plunger rod, a first spherical surface pad and a spherical surface column in spherical surface fit are arranged in the cylindrical cavity from the top down, the first spherical surface pad is fixedly installed on the plunger rod, the spherical surface column stretches out from the lower end of the plunger rod, a supporting sleeve fixedly installed on the lower end of the plunger rod is sleeved at the outside of the spherical surface column, a lug boss is processed at the outside of the lower end of the supporting sleeve, a bracket structure fixedly connected with a middle cross beam is erected on the lug boss, and an elastic pad is arranged between the bracket structure and the lug boss; and a second spherical surface pad fixedly connected with the middle cross beam is installed in the lower end of the supporting sleeve, the second spherical surface pad and the lower end of the spherical surface column are in spherical surface fit with each other. Under the partial load processing condition of the oil cylinder, the second spherical surface pad rotates along the matching surface of the spherical surface column and the spherical surface column rotates along the matching surface of the first spherical surface pad to prevent the plunger rod from deflecting along the axial line and enable the plunger rod to move linearly up and down, so as to reduce the strain damage on the cylinder body and the plunger rod.

Description

technical field [0001] The invention relates to a driving oil cylinder for a hydraulic machine, in particular to a one-way plunger rod oil cylinder for a hydraulic machine. Background technique [0002] The one-way plunger rod cylinder is a middle beam drive structure often used in hydraulic presses. At present, the cylinder body of the oil cylinder is installed on the upper beam of the hydraulic press, and the lower end of the plunger rod is rigidly connected with the middle beam. With this type of connection, when the hydraulic machine is used for eccentric load processing conditions, the plunger rod will deflect in the axial direction, so that the plunger rod will form partial contact with the inner wall of the cylinder, which will easily cause damage to the cylinder body and the plunger rod . Contents of the invention [0003] In order to solve the technical problems in the known technology, the invention provides a one-way plunger oil cylinder for hydraulic machines...

Claims

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Application Information

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IPC IPC(8): B30B1/32B30B15/00F15B15/14F15B15/20
CPCB30B15/068
Inventor 罗丽丽
Owner TIANJIN TIANDUAN PRESS CO LTD
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