Passive gate bottom-edge device with function of automatic adjustment of water column pressure

Abstract

The invention relates to the field of water conservancy machinery, in particular to a gate bottom-edge device, namely a passive gate bottom-edge device with a function of automatic adjustment of water column pressure. An inner box is sleeved into an outer box. A lifting shaft is mounted at the top of the inner box. A middle waterstop device is disposed between the outer box and the inner box to isolate an inner cavity of the outer box from the outside. A positioning device is mounted on the outer box and matched with the inner box. The top of a gate leaf is fixedly connected with the outer box, and the bottom of the gate leaf is fixedly connected with a bottom-edge frame. A fixed side of a bottom-edge rotating mechanism is hinged to the bottom-edge frame through a hinge shaft. The top of a connecting bar is hinged to the inner box. The bottom of the connecting bar is hinged to a rotating side of the bottom-edge rotating mechanism. The bottom-edge rotating mechanism is controlled to move up and down and rotate back and forth under the relative motion of a lifting head of a hoist and the gate, resultant force required by the gate in operation is adjusted, closing force required by the gate is increased to the maximum extent, holding force and opening force required by the gate are reduced, and finally capacity of the hoist is reduced.

Description

technical field [0001] The invention relates to the field of water conservancy machinery, in particular to a gate bottom edge device. Background technique [0002] A gate is a movable mechanism used to close, open or partially open a water orifice in a hydraulic structure. Its main function is to control the water level and regulate the flow. The gate is an important part of the hydraulic structure. Its safety and applicability affect the operation effect of the entire hydraulic structure to a large extent, and the opening and closing force required by the gate is an important part of the gate performance. [0003] At present, the planar gates of the submerged hole prefer to adopt the water sealing form of the upstream panel and downstream water sealing when conditions permit. The advantage of this form is that the water column pressure borne by the top of the gate is used instead of other forms of aggravation, thereby reducing the total cost of the gate. , the bottom edge...

AI Technical Summary

Problems solved by technology

[0003] At present, the planar gates of the submerged hole prefer to adopt the water sealing form of the upstream panel and downstream water sealing when conditions permit. The advantage of this form is that the water column pressure on the top of the gate can be used instead of other forms of aggravation, thereby reducing the total cost of the gate. The bottom edge of this kind of gate is fixed, and the gate starts to bear the water column pressure at any position entering the orifice. When the gate falls to the bottom, the water column pressure bears the maximum. The matching hoisting equipment with larger capacity costs more

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