High precision gatage limiting device

Abstract

The invention discloses a high precision gatage limiting device. The high precision gatage limiting device comprises a shell, and an input shaft, an absolute value encoder, a driving gear, a driven gear, a transmission screw, a sliding rod guide rail, a sliding block and a limiting switch which are arranged in the shell; the outer end of the input shaft is fixedly connected with a power output shaft of a winding hoist, and the inner end of the input shaft is connected with the absolute value encoder; and the driving gear flexibly sleeves the output shaft, the driven gear flexibly sleeves the transmission screw, the driving gear and the driven gear are engaged with each other, the sliding block sleeves the sliding rod guide rail, and the sliding block is fixedly connected with a screw sliding block on the transmission screw, and the limiting switch matched with the sliding block in contact is fixedly arranged on the side part of the sliding rod guide rail in the shell, namely when the sliding block overlaps with the upper part and the lower part of the limiting switch, a pressing handle of the limiting switch is pressed by the sliding block. According to the high precision gatage limiting device, the gear transmission structure is adopted to achieve horizontal sliding limiting, and the problem that measurement is not accurate due to loose of an original cam structure is avoided.

Description

technical field [0001] The invention relates to the field of gate automation control, in particular to a high-precision gate opening limiting device. Background technique [0002] The gate is a control facility for closing and opening the discharge (discharging) channel. It is an important part of the pump station and the sluice. It can be used to intercept the water flow, control the water level, adjust the flow, and discharge sediment and floating objects. According to the type of driving structure, the gate is divided into hydraulic hoist gate, winch hoist gate and so on. Among them, the hoist gate is to use the drum to wind the wire rope to drive the pulley to lift to realize the purpose of opening and closing the gate. In order to grasp the specific lifting position of the gate in real time, and at the same time avoid the gate opening exceeding the set maximum during the upward lifting process of the gate. When the value or the falling gate occurs, the wire rope loosen...

AI Technical Summary

Problems solved by technology

The cam 02 on the transmission shaft 01 of this height limiter is locked by the nut 04 at the top to make it rotate synchronously with the transmission shaft 01. However, during use, the nut will loosen, causing the initial position of the cam 02 to change. The change will affect the accuracy of the measurement, and the gate cannot achieve accurate limit

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