Automatic gantry type gate used for simulating instantaneous dam break

Abstract

The invention belongs to the field of hydraulics experimental models and particularly relates to an automatic gantry type gate used for simulating the instantaneous dam break. The automatic gantry type gate comprises a gantry type support, a gate plate located below the gantry type support and a gate plate lifting control device. The gate plate lifting control device comprises a first weight block matched with a vertical guide rail fixedly connected to the gantry type support, and a lifting motor controlling the first weight block to ascend and descend. The gate plate is connected with the first weight block after being connected to a pulley block arranged on the gantry type support in a winding manner through a steel cable set. The gantry type support is fixedly provided with a fixing plate provided with a guide groove. The guide groove slides vertically in cooperation with a vertical guide bar arranged on the gate plate. Sealing buffering bars are arranged on the edges of the two sides of the gate plate and at the bottom end of the gate plate correspondingly. The first weight block is controlled to ascend and descend through a lifting motor controller, and therefore the gate plate is controlled to ascend and descend. The automatic gantry type gate can be automatically started and reset and is suitable for various sizes of water tanks, time and labor are saved, and errors can be effectively reduced.

Description

technical field [0001] The invention belongs to hydraulic experiment model facilities, in particular to an automatic gantry gate for simulating instantaneous dam breaks. Background technique [0002] The method of obtaining instantaneous dam-breaking water by opening the gate instantly in a rectangular tank has been used in various fluid-solid coupling experiments, and the interaction between the instantaneous dam-breaking water and its downstream structures is often used to simulate tsunami landing, Natural phenomena such as waves on deck. In addition, the experimental research data of the movement of dam-break water in the dry bed and the lower surface of the wet bed are often used to test the accuracy of various fluid-solid coupling numerical models. Around 2000, the European Union launched a series of studies on dam breaks (The Concerted Action on Dam-Break Modeling (CADAM) ), using a large number of rectangular tanks and opening the gates instantly to obtain dam break ...

AI Technical Summary

Problems solved by technology

Such experiments currently carried out must build expensive dam break test tanks for different experiments, instead of using the existing ordinary test tanks in the laboratory to carry out experiments

In addition, there are still the following defects in the current instant opening gate of the dam break tank: (1) Grooves need to be opened on the side of the tank where the gate is opened and at the bottom of the tank to block the gate to seal the water body, which not only damages the tank, but also allows fluid to flow through the groove When the flow state changes, the gate can only be set at the groove in the tank; (2) In order to achieve the purpose of opening the gate instantly, the gate is generally opened by falling heavy objects. Objects are generally transported by manpower, which is time-consuming and laborious. After the gate is opened, it must be manually stuck back to the water tank to start the next set of experiments, and the manual opening of the gate makes the experiment repeatability poor and the error is large, which is not conducive to the smooth and fast progress of the experiment; (3) The gate is integrated with the sink, and a gate can only be used for a single sink

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