如何预防螺杆式启闭机的顶闸事故方法
如何预防螺杆式启闭机的顶闸事故方法
How to Prevent the Accident of Top Brake of Screw Hoist
如果闸门正好处在关闭位置即闸板下缘已接触闸底，螺杆上的吊头螺栓处于长椭圆螺孔下部，行程开关仍处在初始状态，此时开闸，即使方向搞反（含电源相序变动）也不会引发事故，因闸门不动，螺杆仍能下降触动行程开关动作，发出报警信号提醒操作人员终止误操作或改变操作方向，属电动启闭的并能自动停机。当发出报警信号和自动停机的，如操作人员不立即纠正错误操作（手动必须立即纠正）或排除障碍使保护系统复位，报警器将边续不断地发出警报，属电动启闭的如不排除故障使行程开关复位将无法重复启闭，从而可有效地防止顶闸事故的发生。
If the gate is in the closing position, that is, the lower edge of the gate has touched the bottom of the gate, the suspender bolt on the screw is in the lower part of the long elliptical screw hole, and the stroke switch is still in the initial state, when the gate is opened, even if the direction is reversed (including the phase sequence change of the power supply), the accident will not occur, because the gate is not moved, the screw can still drop the trigger stroke switch. Actions, alarm signals to remind operators to stop misoperation or change the direction of operation, is an electric start-up and shut down automatically. When alarm signals and automatic shutdown are sent out, if the operator does not immediately correct the wrong operation (manual must be corrected immediately) or remove obstacles to reset the protective system, the alarm will continuously send out alarms. If the fault is not eliminated, the reset of the trip switch will not be able to repeat the start and close, so it can be effectively prevented. Accident of stop brake.
无闭门力淹没式闸门启闭保护措施此类闸门长期淹没水中，螺杆吊孔仍由圆形改为长椭圆形，但行程开关的位置需要安装在最高水位之上，故需将挡块改为传力杆，传力杆一端焊在闸门吊座上，传力杆与螺杆平行并用圆环与螺杆联接，使传力杆能在圆环内上下移动，传力杆的长度应满足伸出最高水除加强操作人员的工作责任心教育和技能培训，要求操作人员按启闭程序操作外，关键是要从技术措施上予以改进，杜绝顶闸事故的发生。
Protection measures for opening and closing of submerged gate without closed door force This kind of gate has been submerged for a long time, the screw hanger hole is still changed from round to long ellipse, but the position of the stroke switch needs to be installed above the highest water level, so the block should be changed into a force transfer rod, one end of the force transfer rod is welded on the gate hanger, and the force transfer rod is parallel to the screw with a ring and screw. The pole connection enables the transmission pole to move up and down in the ring. The length of the transmission pole should meet the maximum water extension. Besides strengthening the education of the operator's sense of responsibility and skill training, and requiring the operator to operate according to the opening and closing procedure, the key is to improve the technical measures to prevent the occurrence of the top gate accident.
