Hydraulic system and sealed discharging control method for kitchen garbage truck

Abstract

The invention provides a hydraulic system and a sealed discharging control method for a kitchen garbage truck. The hydraulic system comprises a hydraulic pump, execution elements, control elements, apressure sensor and a controller, wherein the execution elements comprise a push shovel oil cylinder, a rear door oil cylinder, a spiral motor and a flashboard oil cylinder; the control elements comprise a push shovel control valve, a rear door control valve, a motor control valve and a flashboard control valve; the pressure sensor is used for detecting a pressure signal on an oil inlet pipeline;and the controller is used for receiving the pressure signal. The technical scheme has the beneficial effects that the controller is first used for controlling the rear door control valve to be opened, and then used for controlling the rear door control valve to be closed only when the pressure signal is higher than a set value, and thus that a rear door is closed tightly is ensured; then the flashboard control valve is opened, similarly, after that a flashboard is opened in place is ensured, the flashboard control valve is controlled to be closed; and finally, the push shovel control valve and the motor control valve are opened, and sealed discharging is started. The whole process is realized through cooperation of the pressure sensor and the controller, manual troubleshooting and controlare not needed, so that the work of operators is saved, and the sealed discharging process becomes simple and convenient.

Description

technical field [0001] The invention relates to a hydraulic system of a kitchen garbage truck and a control method for sealing and unloading. Background technique [0002] Kitchen garbage trucks are mainly used to collect and transport urban food waste (swill) and domestic garbage. At present, there are two main ways of unloading food garbage trucks. One is to push and shovel unloading. The push shovel moves backwards for unloading, the other is sealed unloading, when unloading, the back door is closed, the gate on the back door is opened, and then the screw conveying auger and push shovel are started to discharge the garbage from the discharge port at the gate Drain the box. [0003] For example, a kitchen garbage truck disclosed in a Chinese utility model patent whose authorized announcement number is CN202729065U includes a chassis and a garbage bin arranged on the chassis. There is a back door and a lifting mechanism on the side, and a push shovel for compressing and d...

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to ensure that the back door is closed tightly when sealing and unloading, otherwise the garbage will leak out from the joint gap between the back door and the box body, causing pollution to the surrounding environment

At present, in the prior art, it can only be checked manually, that is, it is necessary to check whether the back door is closed tightly before sealing and unloading, which increases the work of the operator, the operation is troublesome, and the unloading is inconvenient

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