The gate is the working part, 5. It is used together with the hoist. Opening and closing machine for the gate open and close the implementation of the local, the opening and closing machine by human, motor or pneumatic, hydraulic mechanism to drive the gear of the transmission device, worm gear and worm operation, drive nut or screw rotation of the gate shaft for vertical lifting movement, so as to open or close the gate, to achieve the purpose of water, water or adjust the water level

The door frame and ram are made of high-quality gray or ductile iron,

1. Cast iron and copper inlaid square gate is composed of door frame, ram, guide rail, seal strip, transmission screw, lifting block nut/lug and adjustable sealing mechanism. Guide rail left and right symmetrical arrangement and with stainless steel bolt positioning pin and the door frame two side end is connected to the gate of small and medium diameter, the guide rail can be poured into one with the door frame) guide length is generally 1/21/3 open height of the gate, thus the whole structure of high strength, high rigidity, wear resistance, corrosion resistance, bearing capacity. Sealing material is copper alloy or rubber,

2, through the wedge device wedge tightening to achieve seal. And after precision machining, so good sealing. Easy to install, debug, use and maintain.

3, the embedded steel plate or embedded bolt type installation. Long service life. Wide adaptability.

4. Complete varieties and specifications.

Working gate can play the role of regulating water level, controlling water flow, and can often operate the gate, also known as the main gate or control gate. It has the characteristics of tight sealing, flexible opening and closing and reliable operation. Except for the miter gate and cross pull door of the lock, it can operate under the condition of moving water.

Setting position The working gate should be set at the part of the hydraulic building where the water flow is smooth and stable. In the spillway tunnel with a bend, it should be set in the straight section of a certain distance downstream of the bend, so as to eliminate the bad circumstantial flow caused by the bend. In the spillway tunnel, the working gate may be located in the inlet section, the middle section or the outlet section. When it is arranged in the outlet section, the ventilation behind the door is sufficient, the water flow pattern is good, and the work is reliable. The upstream of the gate is a pressurized flow, the velocity is low, and the installation, operation and maintenance of the gate are more convenient.

When the working gate is set in the middle part of the waterway or the entrance section, attention should be paid to the ventilation behind the door, so that the water under the gate should be kept open during the flood discharge process, so as not to produce adverse consequences such as gate vibration and emptiness.

In order to ensure the reliability of working gate operation, emergency gate and access gate should be set upstream to provide maintenance conditions. There are many types of gate type working gate, which are commonly used in plane fixed wheel gate, plane sprocket gate, arc gate, plane sliding gate and so on. When selecting the model, it is mainly based on the size and scale of the gate set on the waterway where the hydraulic building is located, the running water head, the material and the conditions of manufacturing, installation and application, and the comprehensive technical and economic indicators to demonstrate the selection. Each working gate is operated by a special hoist.