Title:
AUXILIARY HYDRAULIC SYSTEM AND CONCRETE PUMPING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/043377
Kind Code:
A1
Abstract:
An auxiliary hydraulic system and a concrete pumping device. The auxiliary hydraulic system comprises a main oil pump (1), a stirring motor (7), a water-cleaning motor (9), a first reversing valve (6), and a second reversing valve (8). An oil inlet of the main oil pump (1) is connected to an oil tank, an oil outlet of the main oil pump (1) is connected to an oil inlet (P) of the first reversing valve (6), a first working oil port (A) and a second working oil port (B) of the first reversing valve (6) are connected to two oil ports of the stirring motor (7) respectively, an oil return port of the first reversing valve (6) is connected to an oil inlet of the second reversing valve (8), a first optional oil outlet and a second optional oil outlet of the second reversing valve (8) are connected to a first oil port of the water-cleaning motor (9) and the oil tank respectively, and a second oil port of the water-cleaning motor (9) is connected to the oil tank. The auxiliary hydraulic system can achieve synchronization of a stirring operation and a water-cleaning operation. The concrete pumping device is provided with the auxiliary hydraulic system.
Inventors:
YANG MING (CN)
SUN DAN (CN)
ZHOU YOUZHONG (CN)
SUN DAN (CN)
ZHOU YOUZHONG (CN)
Application Number:
PCT/CN2014/086346
Publication Date:
April 02, 2015
Filing Date:
September 12, 2014
Export Citation:
Assignee:
SANY AUTOMOBILE MFG CO LTD (CN)
International Classes:
F15B11/17; F15B13/06
Foreign References:
| CN203548393U | 2014-04-16 | |||
| CN202418066U | 2012-09-05 | |||
| US4455921A | 1984-06-26 | |||
| CN103256264A | 2013-08-21 | |||
| CN102561165A | 2012-07-11 | |||
| CN103244501A | 2013-08-14 | |||
| CN102400968A | 2012-04-04 |
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