Hydraulic quick-change device

A hydraulic and fast technology, applied in the direction of fluid pressure actuation device, servo motor, mechanical equipment, etc., can solve the problems of high cost, waste, high pressure, and achieve the effect of cost saving

Inactive Publication Date: 2014-01-01
ZHENJIANG JINTIANCHEN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the operating efficiency of construction machinery has become the requirement of many customers. Among them, shortening the auxiliary time as much as possible is of great help to improve the overall operating efficiency of the machine. Among them, the rapid replacement of attachments is an important manifestation. At present, most attachments are through fast The changing device is connected with the working device of the whole machine. The quick changing device includes a mechanically controlled quick changing device, a hydraulically controlled quick changing device and an electronically controlled quick changing device. Its essence is still hydraulic control. The oil of the hydraulic control quick-turn device is taken from the high-pressure oil in the auxiliary connection of the main control valve, and it is realized by controlling the quick-change oil cylinder. But in terms of its function, the quick-change oil cylinder only needs to realize the locking function , the active force of the oil cylinder that it needs to provide does not need to be very large, so the high-pressure oil is obviously a waste, and the pressure is high, which leads to more complicated structure of the oil cylinder and pipeline, and higher cost

Method used

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Examples

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Effect test

Embodiment 1

[0014] Such as figure 1 As shown, a hydraulic quick-change device includes a quick-change oil cylinder 1 and a quick-change control valve 2, and a pressure-relief valve 3 is arranged on the oil inlet circuit and the oil return circuit of the quick-change control valve 2, and the quick-change control valve 2 The oil inlet and oil return port of the valve 2 are also connected with the quick connector 5 through the one-way valve 4 .

Embodiment 2

[0016] Such as figure 2 As shown, a hydraulic quick-change device includes a quick-change oil cylinder 1 and the quick-change control valve 2, and a pressure-relief valve 3 is arranged on the oil inlet circuit and the oil return circuit of the quick-change control valve 2. The oil inlet and oil return port of the change control valve 2 are also connected to the quick connector 5 through the one-way valve 4, and also include an accumulator 6, which is arranged in the oil return circuit of the quick change control valve 2 An emergency control valve 7 is also arranged on the oil circuit of the accumulator 6, and the spools of the quick change control valve 2 and the emergency control valve 7 are cone spools.

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PUM

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Abstract

The invention discloses a hydraulic quick-change device. The hydraulic quick-change device comprises a quick-change oil cylinder and a quick-change control valve. The oil inlet channel and the oil outlet channel of the quick-change control valve are both provided with reducing valves, and the oil inlet and the oil return inlet of the quick-change control valve are connected with quick joints through one-way valves. By additionally arranging the reducing valves on the oil inlet channel and the oil outlet channel of the hydraulic quick-change device, the quick-change oil cylinder can work under a low-pressure environment and accordingly can be of a lower-pressure structure, the cost can be saved; besides, by additionally arranging an energy accumulator, emergent removal or change of accessories can be achieved.

Description

technical field [0001] The invention relates to a hydraulic quick change device, in particular to a connection device for fast changing attachments of loaders, which can be used for loaders, skid steer loaders, backhoe loaders, excavators and other vehicles with hydraulic power output ports. Construction machinery belongs to the technical field of construction machinery. Background technique [0002] At present, the operating efficiency of construction machinery has become the requirement of many customers. Among them, shortening the auxiliary time as much as possible is of great help to improve the overall operating efficiency of the machine. Among them, the rapid replacement of attachments is an important manifestation. At present, most attachments are through fast The changing device is connected with the working device of the whole machine. The quick changing device includes a mechanically controlled quick changing device, a hydraulically controlled quick changing device...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B1/02F15B11/02
Inventor 江林刘万顺陈露美
Owner ZHENJIANG JINTIANCHEN NEW MATERIAL
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