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Auxiliary hydraulic system and pumping machinery

An auxiliary hydraulic and hydraulic technology, applied in mechanical equipment, fluid pressure actuating devices, accumulator devices, etc., can solve the problems of high cost, large number of pressure components, and complex structure.

Active Publication Date: 2018-04-13
SANY AUTOMOBILE MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the auxiliary hydraulic system of concrete pumping equipment usually includes accumulator charging circuit and stirring circuit, etc. The valve group of the accumulator charging circuit controls the accumulator charging / unloading and controls the circuit pressure, the stirring circuit sends hydraulic oil through the stirring pump, and controls the circuit pressure through the pressure valve of the stirring circuit, resulting in the number of pressure components in the entire auxiliary hydraulic system Many, high cost, complex structure, low reliability

Method used

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  • Auxiliary hydraulic system and pumping machinery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Such as figure 1 As mentioned above, the oil cylinder reversing valve 6 includes an auxiliary electromagnetic reversing valve 61 and a hydraulic reversing valve 62, and the auxiliary electromagnetic reversing valve 61 and the hydraulic reversing valve 62 are both three-position four-way valves. The oil inlet of the auxiliary electromagnetic reversing valve 61 communicates with the oil outlet of the first throttle valve 10, and the oil inlet of the first throttle valve 10 communicates with the first working oil port of the filling valve 3 and the oil outlet of the first throttle valve 10. The accumulator 4 is connected, the two working oil ports of the auxiliary electromagnetic reversing valve 61 are respectively connected with the two control ends of the spool control chamber of the hydraulic reversing valve 62, and the oil inlet of the hydraulic reversing valve 62 The port is in communication with the first working oil port of the filling valve 3 and the accumulator 4,...

Embodiment 2

[0063] Embodiment two: (not shown in the figure)

[0064] The oil cylinder reversing valve includes an oil cylinder electromagnetic reversing valve, the oil inlet of the oil cylinder electromagnetic reversing valve communicates with the first working oil port of the liquid filling valve and the accumulator, and the oil cylinder electromagnetic reversing valve The two working oil ports of the valve communicate with the oil inlet of the left oil cylinder and the oil inlet of the right oil cylinder respectively, and the oil return port of the electromagnetic reversing valve of the oil cylinder communicates with the oil tank.

[0065] In this scheme, the working state of the left oil cylinder and the right oil cylinder is changed through the reversing of the electromagnetic reversing valve of the oil cylinder.

[0066] Wherein, optionally, the electromagnetic reversing valve of the oil cylinder is a three-position four-way valve.

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Abstract

The invention provides an auxiliary hydraulic pressure system and pumping machine, wherein, the auxiliary hydraulic system includes a fuel tank, a hydraulic pressure pump, a hydraulic replenishing valve, an energy accumulator, a main hydraulic pressure working device and an auxiliary hydraulic working device, the first working fuel port of the hydraulic replenishing valve is connected with the fuel inlet and outlet ports of the energy accumulator, and with the fuel inlet of the main hydraulic working device, the second working fuel port of the hydraulic replenishing valve is connected with fuel inlet port of the auxiliary hydraulic working device; the hydraulic replenishing valve is used to control the on-off of the fuel inlet port of the hydraulic replenishing valve and the second working fuel port through the outlet port pressure of the first working fuel port, and to control the conduction flow of the second working fuel port of the hydraulic replenishing valve. The pressure recharge and the return circuit of the energy accumulator in the auxiliary hydraulic pressure system and the hydraulic pressure return circuit of the auxiliary hydraulic pressure working device are integrated by present scheme, the two return circuits are provided with hydraulic pressure fuel through a hydraulic pressure pump, the hydraulic pressure fuel is distributed through the hydraulic pressure valve to charge pressure for the energy accumulator or to drive the auxiliary hydraulic pressure working device to work. The present invention reduces the amount of components in the auxiliary hydraulic system pressure, simplifies the system structure and lowers costs.

Description

technical field [0001] The invention relates to the field of engineering machinery, more specifically, to an auxiliary hydraulic system and a pumping machine with the auxiliary hydraulic system. Background technique [0002] At present, the auxiliary hydraulic system of concrete pumping equipment usually includes accumulator charging circuit and stirring circuit, etc. The valve group of the accumulator charging circuit controls the accumulator charging / unloading and controls the circuit pressure, the stirring circuit sends hydraulic oil through the stirring pump, and controls the circuit pressure through the pressure valve of the stirring circuit, resulting in the number of pressure components in the entire auxiliary hydraulic system Many, high cost, complex structure, and low reliability. Contents of the invention [0003] The present invention aims to solve at least one of the technical problems existing in the prior art. [0004] To this end, an object of the present ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/16F15B1/02F15B1/027F15B13/06
CPCF15B1/02F15B1/027F15B11/16F15B13/06
Inventor 李俊贺电陈城
Owner SANY AUTOMOBILE MFG CO LTD