Synchronous opening/closing device for horizontal gate in hydraulic model test

Abstract

The invention discloses a synchronous opening / closing device for a horizontal gate in a hydraulic model test. The device comprises a bracket, a speed regulation motor, a gear box, a main transmission shaft and two push-pull mechanisms with the same structure, wherein the two push-pull mechanisms are located at the two end parts of the main transmission shaft respectively; each push-pull mechanism comprises a push-pull rack, a support seat, a gear, a rotation shaft and a toothed belt transmission mechanism; the push-pull rack is articulated with one side of the gate, and is in sliding connection in the support seat; the support seat is fixed on the bracket; the gear is meshed with the push-pull rack and fixedly mounted on the rotation shaft; and the rotation shaft is supported on the bracket through a bearing and connected with the end parts of the main transmission shaft through the toothed belt transmission mechanism. In the invention, one main transmission shaft drives two push-pull mechanisms with the same structure to open / close the gate from the two sides of the gate; in the basically same practical situation, the synchronous opening and closing of the gate are realized relatively easily; and the synchronization accuracy is relatively high without influencing the water flow state.

Description

technical field [0001] The invention relates to a gate opening and closing device, in particular to a hydraulic model test horizontal gate synchronous opening and closing device. Background technique [0002] The horizontal gate is a kind of gate that has been widely used in water conservancy projects in recent years. Its characteristics are: the gate is novel in form, simple in structure, and easy to operate; The river bank is coordinated and has a good landscape effect [1][2][3] . The opening and closing of the horizontal gate is mostly completed by the hydraulic push-pull rods connected to the arms on both sides of the gate. Therefore, determining the force of the push-pull rod during the gate opening and closing process has become an important issue in the design of the horizontal gate. The model test is undoubtedly the best way to solve this problem. In actual engineering, in order to ensure the simultaneous opening and closing of the push-pull rods on both sides of ...

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Problems solved by technology

[0003] However, in the model test, the gate is mostly made of plexiglass, and the structure is easily damaged. At the same time, the test requires high force measurement accuracy of the push-pull rod, which requires that the two push-pull rods of the gate must be completely synchronized during the opening and closing process.

If in the model test, the hydraulic push-pull rod is still used for the opening and closing of the gate, because the accuracy of this method is relatively low and it is difficult to control, it is difficult to ensure that the two push-pull rods are completely synchronized and evenly stressed

At present, the more commonly used method is: or simplify the double push-pull rod into a single push-pull rod, but this method affects the flow state and cannot be completely similar to the actual situation; or use a hydraulic push-pull rod, but the force on the two rods is difficult to be even , can not guarantee that the two rods are completely synchronized, and repeated measurements must be carried out many times and the measurement data must be selected.

Therefore, in the hydraulic model test, there is a lack of precise synchronous opening and closing devices for horizontal gates.

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