螺旋千斤顶和蜗杆螺旋千斤顶

螺旋千斤顶,有时称为千斤顶,是一种可调节的起重设备,通过转动导螺杆来升高或降低被提升的重量。 这些千斤顶通常用于举起中等或较重的重量。 它们也可用于提升飞机的水平稳定器和作为重载的可调节支撑。

螺旋千斤顶有不同的尺寸和规格级别,以满足各种应用需求。 螺旋千斤顶的设计和构造将决定其扭矩容量。 螺旋千斤顶必须能够承受高达其额定容量的冲击载荷,否则它们可能无法正常工作。 大多数螺旋千斤顶能够承受高达 10% 的动态负载过载,或 30% 的静态负载过载。 确定合适的螺旋升降机的另一个重要因素是占空比。 占空比是螺旋升降机运行时间的百分比。 该编号通常可以在产品规格页面中找到。

Screw jacks can also come with brakes. A self-locking screw jack requires a brake that can be released by vibration, an increase in spindle pitch, or the use of rolling screw elements. Self-locking screw jacks are designed for dynamic use at medium speeds and should include a brake motor.

A screw jack comes in three basic types: the Travelling Screw Type, Travelling Wedge Screw Type, and Travelling Nut Type. The Travelling Screw Type allows for vertical or horizontal movement. This type is ideal for moving objects with irregular sized axes. It also has a fixed load connection, which means the jack's gearbox must be able to receive movement from the screw shaft. A trapezoidal screw, on the other hand, translates linearly up and down, and functions similarly to the wedged type.

螺旋千斤顶是建筑和制造应用中最常用的千斤顶类型。 它们由钢、不锈钢或铅制成,专为工业应用而设计。 它们也可用于升降平台。 一些螺旋千斤顶是电动的。 这些千斤顶配有安全波纹管和保护管。

Generally, worm and bevel gear screw jacks have similar applications and are used where speed is required. However, the speed of bevel gear screw jacks can be up to 60% higher. They are also ideal for fast lowering and lifting operations. So, it's a good idea to check the specs and the benefits of each type before you buy one.

另一种螺旋升降机是英制蜗轮机械螺旋升降机。 这种螺旋千斤顶结合了高强度青铜蜗轮和合金钢蜗杆。 蜗轮的转动引起提升螺杆和移动螺母的直线运动。 这些螺旋千斤顶的承载能力为 2000 至 XNUMXkN。 升降螺杆的直线运动速度取决于蜗轮的螺距和旋转比。

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