Rotating rod type gate hoist

Abstract

A rotating rod type gate hoist is provided with a motor, a rack, a screw and a gate, wherein the screw is installed on the rack, a transmission mechanism is connected between an output shaft of the motor and the screw, a nut is connected to the gate, the screw is matched with the nut, a shaft sleeve is fixed to the gate, the nut is installed in the shaft sleeve, the outer side face of the nut and the surface of an inner hole of the shaft sleeve are spherical surfaces, and the outer side face of the nut is in interference fit with the inner hole of the shaft sleeve. The screw is sleeved with a multiple-section telescopic sleeve, the upper end of the sleeve is connected with the rack, and the lower end of the sleeve is connected with the gate or the shaft sleeve. Due to the fact that the outer side face of the nut is matched with the inner hole of the shaft sleeve in a spherical surface mode, the nut and the shaft sleeve can relatively deflect for compensation to avoid nut-screw friction increase caused by gate deflection when tiny deflection occurs in the vertical direction during vertical movement of the gate. The arranged sleeve can prevent floating objects on the water surface from being wound around the screw. The rotating rod type gate hoist is reasonable and compact in structure, stable in operation, small in resistance and long in service life.

Description

technical field [0001] The invention relates to a device for controlling the opening and closing of a gate, in particular to a rotary rod type gate hoist. Background technique [0002] Gate opening and closing devices are widely used in hydropower projects, water supply and drainage projects, and urban flood control and drainage projects. The basic structure of an existing screw hoist for controlling the opening and closing of the gate is: it has a motor, a frame, a screw and a gate, the screw is installed on the frame, and a transmission mechanism is connected between the output shaft of the motor and the screw. A nut is connected to the gate, and the screw rod cooperates with the nut. When the hoist is working, the motor drives the screw rod through the transmission mechanism, and the screw rod rotates to make the nut and the gate rise or fall in the vertical direction. Its main shortcomings are: due to the existence of installation deviation, the gate has a slight defle...

AI Technical Summary

Problems solved by technology

Its main shortcomings are: due to the existence of installation deviation, the gate has a slight deflection in the process of running up and down, this deflection will increase the friction between the nut and the screw, and aggravate the wear rate between the two; when the floating objects on the water surface gather in the When the screw is near, the rotating screw is very easy to entangle the floating objects, and the floating objects squeezed into the screwing surface of the screw and the nut will cause the resistance of the screw to rotate, and in severe cases, it will cause the equipment to fail to operate normally or shut down

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