The QS
type opening and closing machine adopts screw drive, which can realize the up and down or rotational movement of the opening and closing parts, and is widely used in the opening and closing of gates, weirs and other equipment in various water supply and drainage projects and water conservancy projects.

Structure and working principle
QS type opening and closing machine can be divided into hand plate type and hand crank type. Dual-purpose flashlight; The flashlight dual-purpose opening and closing machine can be divided into ordinary type and mechatronics type, its working principle is that the handwheel or motor drives the opening and closing nut (or screw) to rotate, and the screw (or opening and closing nut) drives the gate body up and down under the action of the trapezoidal thread to achieve the purpose of opening and closing.

Main features
: Each thrust nut is equipped with a plane bearing, and the structure is simple and reasonable; Low manual operation force;
The drive device adopts oil bath lubrication, the gear material adopts low alloy steel carburizing treatment, the tooth surface hardness is not lower than HRc58, the bearing life is not less than 100000 hours, in any case, the oil bath gearbox is sealed without maintenance;
The limit of the electric device is accurate, the sensitivity is high, it has a two-way "torque" protection effect, overload and overheating protection, and it can still operate normally when the voltage drops to 90% of the normal voltage.

Main technical parameters and installation size chart

Outline mounting dimension drawing