Fluid control mechanism of automatic clamping device

Abstract

The invention relates to a fluid control mechanism of an automatic clamping device and belongs to the technical field of fluid control. The fluid control mechanism comprises a fluid control loop communicated with a rodless cavity and a rod cavity of a pressure cylinder of the automatic clamping device; the fluid control loop comprises a pressure pump, an electromagnetic directional valve, a control one-way valve and a stop valve, which are sequentially connected through a pipeline and located in a chamber; the fluid control loop further comprises a fluid switch control device and two separated limiting switches which are arranged in the chamber; the fluid switch control device comprises two sequential control valves and a switch control pressure cylinder; a rodless cavity and a rod cavity of the switch control pressure cylinder are respectively communicated with a fluid inlet path and a fluid outlet path of the fluid control loop through the two sequential control valves; and a contact pressing head located between the two limiting switches is arranged at the end part of a piston rod of the switch control pressure cylinder. The fluid control mechanism utilizes the contact pressing head of the switch control pressure cylinder to contact with the two limiting switches so as to guarantee the reliability and the stability of work of automatically clamping and loosening objects, and realize the work of clamping and loosening by remote control.

Description

technical field [0001] The invention relates to a control mechanism of an automatic clamping device using fluid control, belonging to the technical field of fluid control. Background technique [0002] Many industrial and mining enterprises are equipped with devices for automatically clamping various objects, and many of the automatic clamping devices use pressure cylinders to complete the clamping operation. For example, in the coke oven CDQ system of iron and steel enterprises, when the coke can carrying vehicle runs under the CDQ lifting tower, the piston rod of the hydraulic cylinder of the automatic clamping device will be stretched to clamp the coke can carrying vehicle and achieve precise positioning In order to meet the needs of the CDQ hoist to accurately lift the coke pot to the top of the CDQ furnace for coke loading. [0003] The main actuators of the automatic clamping device of the existing coke tank carrier are as follows: figure 1 As shown, two sets of hydr...

AI Technical Summary

Problems solved by technology

[0007] The problems existing in the daily use of the above-mentioned existing coke tank carrier automatic clamping device are: 1. Since the signal for controlling the reversing of the electromagnetic reversing valve is sent by the on-site magnetic proximity switch, the on-site installation position of the magnetic proximity switch is The condition is poor, red coke and dust often fall, coupled with the sun and rain in the open air, so it often causes damage to the magnetic proximity switch or failures such as sending out wrong signals, especially when wrong signals are sent out and wrong "clamping" occurs, the running focus The tank carrier will crash the actuator of the automatic clamping device

2. With the wear and tear of the hydraulic cylinder and other reasons, the distance between the magnetic proximity switch and the piston rod or crank rocker changes. If the distance is too close, it will be damaged, and if the distance is too far beyond the sensing range, the signal will not be sent out. As a result, the normal production process is interrupted and the coke output operation of the coke oven is affected.

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