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1 概述五六十年代兴建的中小型水利工程,其放水闸门多采用滚桶及转盘闸门控制,在具体使用中因其存在启闭误差大、感性启闭、维修困难等缺点,现在已经逐渐改用竖井启闭塔平面钢闸门控制,因其克服了滚桶及转盘闸门的诸多缺点,且具有外形美观、启闭灵活、直观、维修方便等特点而被广泛采用。平面钢闸门的启闭由螺杆启闭机螺杆的升降行程来完成,螺杆与闸门之间的联系多采用直径为100mm左右的圆钢或空心钢管,中间以法兰连接,因为其本身存在压杆失稳的弊端,在设计中是以吊杆不产生压应力为前提,但在具体使用中,因水压力、锈蚀等种种不利因素的存在,吊杆产生压应力的情况在所难免,由此很容易因吊杆弯曲而引起工程事故。2 原理利用轮辐辐条固定轮的作用机理,我们把启闭塔的车轮、
1 Overview The construction of small and medium-sized water conservancy projects in the 1950s and 1960s, the release of the gate to use more drums and turntable gate control, in the specific use of its opening and closing error due to large, emotional opening and closing, maintenance difficulties and other shortcomings, has gradually changed With shaft hoist tower plane steel gate control, because it overcomes the drum and turntable gate many shortcomings, and has a beautiful appearance, opening and closing flexible, intuitive, easy maintenance and other features have been widely used. Plane steel gate opening and closing by the screw hoist screw lifting stroke to complete the link between the screw and the gate to use more than 100mm in diameter round steel or hollow steel pipe, the middle of the flange connection, because of its existence pressure bar The disadvantages of instability are based on the premise that the boom does not generate compressive stress in the design. However, due to various unfavorable factors such as water pressure and corrosion, the boom is not able to generate compressive stress in the concrete use. As a result, It is easy to cause engineering accidents due to bending of boom. 2 Principle The use of spoke spoke wheel fixed wheel mechanism, we open and close the tower wheel,