Rake head construction simulation test device

Abstract

The invention discloses a rake head construction simulation test device, and belongs to the technical field of dredging engineering. The rake head construction simulation test device comprises a testrake head, a mud sump, a guide rail, a rack for supporting the rake head, a driving plate, a dredge pipe, a high-pressure flushing pipe, a mud pump, a high-pressure flushing pump and a lifting cable.The rake head construction simulation test device can be used for researching various working conditions of the rake head in the construction process and the angle of the rake head to the ground, theangle of a movable cover to the ground, the angle of a grating, the arrangement mode of movable cover high-pressure flushing nozzles, the number of rake teeth, the advancing speed of the rake head, the dredging depth, the mud flow and the mud concentration can be adjusted; and the rake head construction simulation test device aims to simulate the energy consumption of the construction of a trailing suction dredger under different working conditions, study the digging characteristics of the rake head and the conveying characteristics of mud, realize dynamic parameter monitoring, improve the dredging efficiency, reduce the dredging engineering cost, and provide guidance for actual construction.

Description

technical field [0001] The invention belongs to the technical field of dredging engineering, in particular to a drag head construction simulation test device. Background technique [0002] A trailing suction dredger is a kind of dredger for dredging construction. Its equipped rake head and hydraulic dredging device can excavate and transport the sediment, gravel and other materials on the river bed or seabed into the mud cabin, and the rake head puts Under a certain depth of water, the rake head is in contact with the dredging work surface of the underwater soil layer. The rake head communicates with the mud tank in the hull through the rake arm, and the angle of the rake arm can be adjusted up and down. [0003] After the rake head is lowered to the required dredging depth, the rake teeth touch the soil for excavation, and at the same time, the dredge pump performs suction, and the dredged mixture is transported to the mud cabin through the rake arm through hydraulic action...

AI Technical Summary

Problems solved by technology

At present, the following problems exist in the rake head operation: (1) The dredging operation is relatively extensive, and many excavation operation parameters are set based on the experience of the crew, resulting in unreasonable energy utilization of the ship; (2) The excavation of clay is easy to block the rake, and the cleaning of the rake head affects the construction (3) When encountering the hard soil in the local area of ​​the lower layer of the dredging area, the occurrence of the sliding rake phenomenon makes the area unable to be effectively excavated; (4) The setting of the high-pressure flushing water distribution pipeline is not reasonable

At present, there is a relatively lack of systematic research and test platforms for the excavation process of the rake head, mud transportation and rake blocking mechanism

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