Opening and closing machine for controlling valve

Abstract

The invention relates to an opening and closing machine for controlling a valve. The opening and closing machine comprises a frame, a horizontally-arranged transverse beam, a first driving motor, a vertically-arranged first driving shaft, a vertically-arranged sleeve pipe, a connection mechanism and a gate; the vertical section of the frame is in a U shape; and the transverse beam is fixed to thetop end of the interior of the frame. According to the safe reliable combined type opening and closing machine for controlling the valve, the air pressure of an air cylinder is monitored through an air pressure gauge in the connection mechanism, opening and closing of an air exhaust valve are controlled according to the air pressure condition, accordingly, the situation that the gate continues tobe closed due to misoperation of an operator after gate closing is completed is prevented, and the gate jacking accident caused by human factors is avoided; and in addition, a second driving motor works, a slide block hinged to a connection rod moves back and forth to drive a cleaning block to move, accordingly, barriers at the bottom of the interior of the frame are swept, the effect that the gate jacking accident caused by human factors is avoided is ensured, and the device practicality is improved.

Description

technical field [0001] The invention relates to a safe and reliable combined hoist for controlling valves. Background technique [0002] The hoist is a kind of machine that controls the opening and closing of gates. It is often used in various large-scale water supply and drainage, water conservancy and hydropower projects. It is used to control the lifting of various large and medium-sized cast iron gates and steel gates to achieve the purpose of opening and closing. With the extensive development of water conservancy and hydropower projects, various types of hoists are widely used in reservoir irrigation areas, river dams, hydropower stations and other engineering projects. [0003] The commonly used hoists usually include screw hoist and hydraulic hoist. Although these hoists are simple in structure and easy to install, accidents of jacking gates often occur during use. The main reason is nothing more than human factors. And non-human factors. In terms of human factors, ...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used hoists usually include screw hoist and hydraulic hoist. Although these hoists are simple in structure and easy to install, accidents often occur in the process of use. The main reason is nothing more than human factors. And non-human factors. In terms of human factors, it mainly refers to the misoperation caused by the lack of concentration of the operator. When the gate reaches the lower limit position, it fails to stop in time. Including that during the operation of the gate, floating objects such as trees or obstacles such as stones are brought to the bottom of the gate by high-speed water flow or rushed into the gate groove and get stuck. If the gate is closed at this time, when the lower edge of the gate does not touch the bottom of the gate The reaction force has been blocked by obstacles before, but the limit mark on the screw is not in place, so the operator will not stop the machine, and the hoist will drive the gate to continue to press down. When the reaction force exceeds the endurance of the hoist, A top gate accident is bound to happen

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