Liquid coupling transmission case for driving sand pump of dredge boat

Abstract

The invention relates to a liquid coupling transmission case capable of realizing fast on-off response and suitable for driving a sand pump of a dredge boat, the sand pump of the dredge boat comprises a liquid coupling and a shell, wherein the shell is fixedly connected with a driving wheel of the liquid coupling, is communicated with a working cavity of the liquid coupling through an oil hole and is internally provided with a fixed guide pipe; the opening of one end of the fixed guide pipe faces to the oil feeding direction of high-speed rotative working oil inside the shell, the fixed guide pipe is provided with a one-way valve, and the other end of the fixed guide pipe is communicated with an oil cooler; an oil outlet of the oil cooler is connected with an oil inlet of a proportional regulation control valve, an oil outlet of the proportional regulation control valve is communicated with an oil inlet of the working cavity of the liquid coupling, and the proportional regulation control valve is also provided with a bypass which is communicated with an oil tank. The added speed regulation proportional regulation control valve can realize the load start, the overload protection, the isolated torsional vibration, the slow-down impact, the fast on-off and the stepless speed regulating operation.

Description

technical field [0001] The invention relates to a hydraulic coupling transmission box for dredger sand pump driving, in particular to a transmission box capable of fast clutching and stepless speed regulation and widely used (grab bucket type, chain bucket type, shovel type, Hydraulic coupling transmission box driven by mud (sand) pumps of dredgers, dredgers, sand pumps and other engineering ships. Background technique [0002] At present, medium and large (over 1500 cubic / hour) dredgers at home and abroad generally adopt the traditional configuration method in which the internal combustion engine (diesel engine) directly drives the sand pump through the mechanical gearbox. Because the mechanical gearbox generally does not have the clutch function, high-power internal combustion engines are not Frequent starting and the mud pump is a large inertia, heavy load, and difficult to start equipment, so the mud pump unit has disadvantages such as difficult starting, large mechanica...

AI Technical Summary

Problems solved by technology

One driving method is a diesel engine + (GWC, GWL series) marine gearbox to drive the dredger mud sand pump. Although the marine gearbox has a clutch function in this configuration, the clutch cannot effectively slow down the mechanical shock because the clutch is a hydraulic clutch. And under severe mechanical shock, its hydraulic clutch has a high failure rate of wear and tear

Another driving method is diesel engine + mechanical gearbox + (air bag or mechanical) clutch to drive the dredger sand pump. This configuration has no essential difference from the first driving method, and still cannot effectively solve the problem of mechanical shock

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