Integrated mortar pump control valve

Abstract

The invention discloses an integrated mortar pump control valve. The valve comprises the following parts of a valve body on which a main oil inlet, a main oil return port, a first oil outlet, a secondoil outlet, a secondary oil return port, a third oil outlet and a fourth oil outlet are provided; a first switching valve cavity respectively connected to the main oil inlet, the main oil return port, the first oil outlet and the second oil outlet, and internally matched with a first valve stem in terms of gaps; a second switching valve cavity respectively connected to the main oil inlet, the secondary oil return port, the third oil outlet and the fourth oil outlet, and internally matched with a second valve stem in terms of gaps; a first solenoid valve group used to drive the first valve stem to reciprocate in the first switching valve cavity; and a second solenoid valve group used to drive the second valve stem to reciprocate in the second switching valve cavity. The integrated mortar pump control valve has the advantages of small volume, simple structure, convenient installation, short oil supply path, low oil flow resistance, low pressure loss, and quick response to switching oilsupply.

Description

technical field [0001] The invention relates to the technical field of hydraulic control systems for engineering machinery, in particular to an integrated mortar pump control valve. Background technique [0002] In the field of construction machinery and construction machinery, there are many equipment such as pump trucks, excavators, loaders, and two-headed excavators that need to use oil cylinders to bear loads or perform actions, and the actions of oil cylinders are generally performed through control valves. Controlled; if the pump truck needs to alternately act between the pumping cylinder and the swinging cylinder when it is working, and the alternating action of the pumping cylinder and the swinging cylinder needs to be controlled by the mortar pump control valve, that is, the control valve controls the mortar pump to the pumping cylinder Or the oil supply of the swing cylinder to realize the alternate action of the pumping cylinder or the swing cylinder. The structu...

AI Technical Summary

Problems solved by technology

The mortar pump control valve of the present technology has the following deficiencies in actual use: first, two electromagnetic switching valves are installed on the top of the base, which increases the volume of the entire mortar pump control valve, resulting in more installation restrictions and poor connection structure. It is more complicated and inconvenient to install; secondly, the distance between the two electromagnetic switching valves and the oil outlet, oil return port and main oil inlet on the base is long, resulting in a long length of the oil circuit connected between them, so that When the mortar pump control valve supplies oil, the oil flow resistance is large, the oil pressure loss is high, the switching response is slow, and the oil outlet pressure is insufficient

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