Hydraulic double-cylinder corner breaking shear expander and working method thereof

A hydraulic cylinder and corner technology, which is applied in the field of hydraulic double-cylinder corner breakaway shear expanders, can solve the problems of difficult operation, weak adaptability, and small working radius, and achieve high operational reliability, improved applicability, and easy portability Effect

Pending Publication Date: 2018-11-23
SHANGHAI FIRE RES INST OF THE MIN OF PUBLIC SECURITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of shear expander is often difficult to operate due to the small working radius when it is demolished in a narrow space, so its adaptability is weak

Method used

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  • Hydraulic double-cylinder corner breaking shear expander and working method thereof
  • Hydraulic double-cylinder corner breaking shear expander and working method thereof
  • Hydraulic double-cylinder corner breaking shear expander and working method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] see Figure 1-7 , a kind of hydraulic double-cylinder breakable corner shearing expander, comprising: inner tool pliers 1, outer tool pliers 2, both of which are hinged on the rotating shaft 3 at the same time; inner hydraulic cylinder 6, outer hydraulic cylinder 7; inner hydraulic cylinder pressure relief When the upper end of the ejector rod shrinks to the lowest plane a, it is lower than the b plane where the upper end of the ejector rod shrinks to the lowest point when the outer hydraulic cylinder is released; straight connecting rod 4, curved connecting rod 5; the upper end of straight connecting rod 4 and the inner tool clamp 1 is hinged, the lower end is hinged with the ejector rod of the inner hydraulic cylinder; the upper end of the curved connecting rod 5 is hinged with the outer tool tongs 2, and the lower end is hinged with the ejector rod of the outer hydraulic cylinder; the inner hydraulic cylinder 6 is depressurized, and the ejector rod of the outer hydrau...

Embodiment 2

[0034] The structure of the hydraulic double-cylinder breakable shear expander is the same as that of the embodiment.

[0035] see Figure 5 , the inner hydraulic cylinder 6 releases pressure, and when the ejector pin of the outer hydraulic cylinder 7 travels to the maximum stroke, the inner tool clamp 1 and the outer tool clamp 2 are closed and rotated 90° to the inside at the same time. Then, a pair of tool pliers is simultaneously stretched into the part to be expanded; the inner hydraulic cylinder 6 and the outer hydraulic cylinder 7 are started simultaneously to drive the pair of tool pliers to rotate in reverse to implement expansion.

Embodiment 3

[0037] The structure of the hydraulic double-cylinder breakable shear expander is the same as that of the embodiment.

[0038] Outer hydraulic cylinder 7 releases pressure, and when inner hydraulic cylinder 6 ejector rods travel to the maximum stroke, inner tool tongs are in an upright position, corresponding to the position of the object to be cut; then, outer hydraulic cylinder 7 drives curved connecting rod 5 to drive The outside tool pliers 2 rotate inwardly around the axis of rotation 3 and implement shearing, such as Image 6 shown.

[0039] The left and right tongs of the hydraulic double-cylinder corner breakable shear expander of the present invention can realize a 0-90° turning angle. Two hydraulic rods respectively drive the left and right tool tongs to realize the opening and closing of the tool tongs; and when the left tongs turn to the limit state, the working pressure can be maintained; when the left and right tongs rotate to a certain angle to the left, the le...

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PUM

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Abstract

The invention relates to a hydraulic double-cylinder corner breaking shear expander, which comprises inner side tool pliers and outer side tool pliers, both of which are hinged on a rotating shaft, astraight connecting rod and a curved connecting rod; when an inner side hydraulic cylinder relieves pressure, the upper end of a top rod is contracted to the lowest plane a, and when an outer side hydraulic cylinder relieves pressure, the upper end of the top rod is contracted to the lowest plane b; the upper end of the straight connecting rod is hinged with the inner side tool pliers, and the lower end of the straight connecting rod is hinged with the top rod of the inner side hydraulic cylinder; the upper end of the curved connecting rod is hinged with the outer side tool pliers, and the lower end of the curved connecting rod is hinged with the top rod of the outer side hydraulic cylinder; when the inner side hydraulic cylinder relieves pressure, and the top rod of the outer side hydraulic cylinder is traveled to the maximum stroke, the inner side tool pliers and the outer side tool pliers are closed, and simultaneously rotate 90 degrees to the inner side; when the outer side hydraulic cylinder relieves pressure and the the top rod of the inner side hydraulic cylinder is traveled to the maximum stroke, the inner side tool pliers and the outer side tool pliers are closed, and simultaneously in the upright position. The hydraulic double-cylinder corner breaking shear expander provided by the invention can realize the controllable rotation in the range of 90 degrees of the innerand outer side tool pliers, thereby carrying out the breaking in a narrow space.

Description

technical field [0001] The invention relates to a fire-fighting rescue tool, in particular to a hydraulic double-cylinder corner rescue shear expander. Background technique [0002] The traditional hydraulic rescue shear expander is driven by a single cylinder, and the synchronous movement of the two blades is realized through the linkage mechanism, or the blade on one side is fixed and the blade on the other side moves. This type of shear expander is often difficult to operate due to the small working radius when it is demolished in a narrow space, so its adaptability is weak. Contents of the invention [0003] The purpose of the present invention is to provide a hydraulic double-cylinder cornerable rescue shear expander, which can realize the controllable rotation of the inner and outer tool clamps within 90°, so that rescue can be carried out in a narrow space, and the rescue operation can be greatly improved. Suitability of the shear expander. [0004] The present in...

Claims

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Application Information

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IPC IPC(8): A62B3/00
CPCA62B3/005
Inventor 姜一桐阮桢张磊
Owner SHANGHAI FIRE RES INST OF THE MIN OF PUBLIC SECURITY
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