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固定式启闭机知识
[来源:原创] [作者:aowl] [日期:18-06-05] [浏览次数:]
一、 启闭机的作用: First, the function of the opening and closing machine: 启闭机是用来开起与关闭闸门、拦污珊等的起重设备。根据水电厂的运行需要,启闭机担负着调节闸门过流量,宣泄洪水、排沙、冲沙等重要任务。同时,启闭机机械也可以完成其他金属结构与机电设备的安装与检修等工作。 Hoist is used to start and close the gate, stop pollution, and so on lifting equipment. According to the operation needs of the hydropower plant, hoist is responsible for adjusting the excess flow of the gate, releasing the flood, desilting and scouring sand. At the same time, hoist machinery can also complete other metal structure and mechanical and electrical equipment installation and maintenance work. 二、启闭机的特点: Two, the characteristics of the opening and closing machine: 1、启闭机操作的不是自由悬挂的重物,而是沿着闸门槽上下移动或饶着支铰旋转的闸门。 1, hoist operation is not free hanging heavy objects, but along the gate slot move up or down or rake a hinge rotating gate. 2、动水中启动闸门的启闭机,载荷的大小还与闸门开度而变化的动水压力有关。 2. The opening and closing machine of the starting gate of the moving water is also related to the dynamic water pressure changed by the opening of the gate. 3、特别是大跨度的闸门,需要双吊点启闭,一定要保持双吊点同步。 3, especially for large span gates, double hoisting points should be opened and closed, and the double hoisting points must be kept at the same time. 4、启闭机的速度非常低。一般不超过4米/分,只有一些快速闸门才达到10—14米/分。 4, the speed of the opening and closing machine is very low. Generally no more than 4 meters / minute, only some fast gates can reach 10 to 14 meters / minute. 三、启闭机按机械本身结构布置的不同,主要分两大类: 1、固定式启闭机:卷扬式、齿条式、链式、螺杆式和油压式。 2、移动式启闭机:门架式、半门式、桥式和台车式。 Three. The opening and closing machine is divided into two main categories according to the structure of the machine itself: 1, the fixed type opening and closing machine: the hoist type, the rack type, the chain type, the screw type and the oil pressure type. 2, mobile hoist: gantry, half door, bridge and trolley type. 四、根据启闭机的传动方式分:有机械传动和液压传动两种形式。 Four, according to the transmission mode of hoist, there are two forms: mechanical transmission and hydraulic transmission. 五、启闭机的主要技术参数 Five. The main technical parameters of the hoist 启闭机主要技术参数有:额定起重量、起升高度或扬程、工作速度、跨度等。它们是用来说明启闭机性能和规格的一些数据。 The main technical parameters of hoist are: rated lifting weight, lifting height or lift, working speed, span and so on. They are some data for explaining the performance and specifications of hoist. 1) 额定起重量 1) rated hoisting weight 额定起重量是指吊具或取物装置(如抓梁)所能起升的*工作负荷。包括吊具的自重。单位为千克。 The rated load is the working load that can be lifted by the spreader or the extraction device, such as the grab beam. Including the weight of the sling. The unit is kilogram. 2) 起升高度或扬程 2) lifting height or lift 吊具*位置与*位置的垂直距离,称为启闭机的高度或扬程。一般在数值上与卷筒的*收放绳量或液压启闭机活塞*行程相等。单位为米。 The vertical distance between the spreader * position and the position is called the height or lift of the hoist. In general, it is numerically equivalent to the amount of retractable rope or the piston stroke of hydraulic hoist. The unit is rice.返首页:www.theblueissue.com
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