Two-way cartridge type vibration control valve with simple structure

Abstract

The invention belongs to the field of two-way plug-in vibration control valves, and specifically relates to a two-way plug-in vibration control valve with simple structure, which includes a valve body on which a plug-in cavity is formed, an oil inlet port, and a return valve. Oil interface, the first working interface and the second working interface; the main circuit, the main circuit is inserted in the insertion cavity of the valve body, including four two-way cartridge valves and a three-position four-way electromagnetic reversing The pilot direction control circuit composed of the valve, the vibration stop sub-circuit and the no-load oil return sub-circuit; an adjustable throttle valve is also set on the valve body between the oil inlet port and the oil return port to adjust the flow into the motor. The invention has the advantages of reducing the hydraulic impact of the road roller when it starts to vibrate, shortening the vibration stop time, avoiding the resonance of the whole machine, and realizing the switching of two kinds of amplitudes and adjusting the vibration frequency within a certain range. The hydraulic system is simpler and the production cost is lower. Lower pros.

Description

technical field [0001] The invention belongs to the technical field of a two-way plug-in type vibration control valve, in particular to a two-way plug-in type vibration control valve with a simple and compact structure for controlling the operation of a hydraulic motor on a vibratory road roller. Background technique [0002] At present, the vibrating device of domestic single-drum vibratory roller adopts the open hydraulic transmission and control system with constant pump (mostly gear pump) as the power source, which is relatively common. When the vibratory roller starts to vibrate, its vibrating hydraulic motor starts with load, resulting in a high-pressure shock to the hydraulic system during the start-up stage of the roller. This instantaneous high pressure will give components such as pumps, valves, motors and pipelines in the hydraulic system Bring bad noise, cause damage to hydraulic components and loose pipeline connections, resulting in leakage and environmental po...

AI Technical Summary

Problems solved by technology

When the vibratory roller starts to vibrate, its vibrating hydraulic motor starts with load, resulting in a high-pressure shock to the hydraulic system during the start-up stage of the roller. This instantaneous high pressure will give components such as pumps, valves, motors and pipelines in the hydraulic system Bring bad noise, cause damage to hydraulic components and loose pipeline connections, resulting in leakage and environmental pollution. According to statistical analysis, more than 60% of the failures in the vibration hydraulic system of the road roller are caused by the high pressure of the vibration; when the vibration is stopped, due to The rotational inertia of the exciter rotor of the roller will cause the vibration stop time to be too long and cause the whole machine to resonate, which will affect the working quality of the roller and the working comfort of the operator

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