Pumping hydraulic system and concrete pumping equipment
A hydraulic system and pumping technology, applied in mechanical equipment, fluid pressure actuating devices, servo motors, etc., can solve the problems of increasing the length of the hydraulic oil circuit, the pressure loss of the hydraulic oil circuit, and the complex structure of the pumping hydraulic system. The effect of reducing pressure loss, simplifying structure, and simplifying system
Active Publication Date: 2016-05-11
SANY AUTOMOBILE MFG CO LTD
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Problems solved by technology
[0003] However, in the above-mentioned pumping hydraulic system, it is necessary to set the rodless chamber communication valve 4' and the rod chamber communication valve 3', which makes the structure of the pumping hydraulic system more complicated, and the rodless chamber communication valve 4' And the connecting valve 3' with the rod chamber is specially designed for the hydraulic oil circuit, thus increasing the length of the hydraulic oil circuit in the pumping hydraulic system, resulting in the loss of pressure in the hydraulic oil circuit
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[0029] It should be pointed out that the description and sequence of specific structures in this section are only descriptions of specific embodiments, and should not be considered as limiting the protection scope of the present invention. In addition, the embodiments in this section and the features in the embodiments can be combined with each other under the condition of no conflict.
[0030] The invention provides a pumping hydraulic system, which is applied to concrete pumping equipment. The pumping hydraulic system includes a first pumping cylinder, a second pumping cylinder, a main oil pump for supplying oil to the first pumping cylinder and the second pumping cylinder, a rod chamber control valve and a rodless chamber control valve. valve, the rod chamber control valve is connected to the rod chamber of the first pumping cylinder and the rod chamber of the second pumping cylinder, and the rodless chamber control valve is connected to the first pumping cylinder The rodl...
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The invention discloses a pumping hydraulic system and concrete pumping equipment. The pumping hydraulic system includes a first pumping cylinder, a second pumping cylinder and a main oil pump for supplying oil to the first pumping cylinder and the second pumping cylinder, and also includes a rod chamber control valve and a rodless chamber A control valve, the rod chamber control valve is connected to the rod chamber of the first pumping oil cylinder and the rod chamber of the second pumping oil cylinder, and the rodless chamber control valve is connected to the rod chamber of the first pumping cylinder The rodless chamber of the oil delivery cylinder and the rodless chamber of the second pumping cylinder are connected, and the rod chamber of the first pumping cylinder and the rodless chamber of the second pumping cylinder are connected by the rod chamber control valve. The rod chambers communicate with each other, and the rodless chamber of the first pumping oil cylinder is controlled by the rodless chamber control valve, and the rodless chamber of the second pumping oil cylinder receives oil through the main oil pump and can return oil. The pumping hydraulic system eliminates the connecting valve with rod cavity and the connecting valve without rod cavity, which simplifies the system structure and reduces the cost.
Description
technical field [0001] The invention relates to the technical field of pumping hydraulic control, in particular to a pumping hydraulic system. The invention also relates to a concrete pumping device with the pumping hydraulic system. Background technique [0002] Such as figure 1 In the parallel series cylinder working system shown (such as pumping hydraulic system), the rod chambers of the first pumping cylinder 1' and the second pumping cylinder 2' in the system are connected in series through the rod chamber communication valve 3', The rodless chambers of the first pumping cylinder 1' and the second pumping cylinder 2' are connected in series through the rodless chamber communication valve 4'. When the load of the pumping hydraulic system is small, the hydraulic oil provided by the oil pump 5' enters the rod chamber of the first pumping cylinder 1' through the rod chamber control reversing valve 6' (at this time, the rod chamber communicates with the valve 3' disconnec...
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IPC IPC(8): F15B11/00
Inventor 贺电周友中周瑶
Owner SANY AUTOMOBILE MFG CO LTD