Two-way plug-in mounting vibrating valve and electric hydraulic control unit

Abstract

The invention relates to a two-way plug-in mounting vibrating valve comprising a valve body and an electric hydraulic control loop. The valve body is plugged in a plug-in cavity of the valve body. The electric hydraulic control loop is used for controlling the operation of a hydraulic motor, and comprises a two-way plug-in valve, a control cover plate, a guide solenoid directional valve, an overflow valve and the like. The electric hydraulic control loop includes a directional auxiliary loop for controlling corotation and reversion of the hydraulic motor, an auxiliary loop for controlling stalling of the corotation and the reversion of the hydraulic motor, and another auxiliary loop for providing overload protection to the hydraulic vibration system of a pavement roller. The invention further relates to an electric hydraulic control unit comprising an exclusive-used vibrating controller for controlling the two-way plug-in mounting vibrating valve. By the aid of the vibrating controller, the operation time sequence of each solenoid valve can be controlled. By the invention, the hydraulic shock can be alleviated when a pavement roller starts oscillation, amplitudes and stops oscillation, peek value transmission of the hydraulic system can be reduced, and reliability and durability of the operation of the hydraulic components can be improved. The oscillation stop time is shortened and can be regulated and controlled, so that the working quality of the pavement roller is improved and the comfortableness of the drives is increased.

Description

technical field [0001] The invention relates to a two-way plug-in vibration valve, in particular to a two-way plug-in type vibration valve for controlling the operation of a hydraulic motor on a vibratory roller, and an electro-hydraulic valve having the two-way plug-in type vibration valve control unit. Background technique [0002] In order to reduce the cost, the application of open hydraulic transmission and control system with quantitative pump (mostly gear pump) as the power source for the vibration device of domestic vibratory roller is relatively common. In the process of starting and stopping the vibration of the vibratory roller, the vibration frequency and vibration acceleration of the vibrating wheel have a change process from small to large or from large to small. In this short-term transition process, the vibration parameters of the vibrating wheel Different from its vibration characteristics during steady-state operation, coupled with the fact that the vibrat...

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Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is that the vibrating valve block in the prior art cannot overcome the rotational inertia of the exciter rotor of the road roller, so that the vibration stop time is too long to cause the whole machine to resonate, which affects the operation quality of the road roller and the work of the operator. To solve the problem of comfort, provide a two-way plug-in vibration valve and an electro-hydraulic control unit that can effectively shorten the time for the hydraulic motor to stop, that is, the time for the roller to stop vibrating

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