螺旋千斤顶的类型、功能与实际应用（中英文）

螺旋千斤顶，也称为机械执行器，用于提升、定位（例如推、拉、倾斜或滚动）和支撑各种类型的负载。机械螺旋千斤顶用于机器和设备中，将旋转运动转换为直线运动或力。在螺旋千斤顶中，平移螺杆用于伸缩负载，而旋转螺杆是固定的，负载沿着螺杆移动，从而提供更多定位选择。螺旋千斤顶的承载能力范围从 250 磅到 300 吨不等，几乎应用于所有行业——从建筑施工到卫星定位。

Screw Jacks, also known as mechanical actuators, are used to lift, position — such as push, pull, tilt, or roll — and support all types of loads. Mechanical screw jacks are used in machines and equipment to convert rotary motion into linear motion or force. Within a screw jack, translating screws are used to extend and retract a load, while rotating screws are fixed and the load travels along the screw for more positioning options. Screw jacks can range in capacity from 250 lbs. to 300 tons and are used in virtually every industry – from building construction to satellite positioning. 

螺旋千斤顶系统有两种类型：

There are two types of screw jack systems:

螺旋千斤顶升降系统

Screw Jack Lifting Systems

• 螺旋千斤顶升降系统最适合用于提升重物但精度要求不如定位精度高的应用场景，例如将箱子从地面搬运到夹层。

• 螺旋千斤顶升降系统的其他应用包括机器调整、输送机和人体工程学平台。

• Screw Jack Lifting Systems are best in applications where you’re lifting a load, but accuracy is not as critical as during the positioning, such as moving boxes from a floor to a mezzanine.

• Other applications for Screw Jack Lifting Systems include machine adjustment, conveyors, and ergonomic platforms.

螺旋千斤顶定位系统

Screw Jack Positioning System

• 螺旋千斤顶定位系统最适用于需要高精度和高准确度的应用。这些系统能够进行推、拉、倾斜或滚动运动。螺旋千斤顶定位系统用于定位卫星天线，这些天线需要精确定位在目标上以接收信号，以及其他需要高精度运动的应用。

• 螺旋千斤顶定位系统也用于金属制造等应用，例如在生产过程中保持钢卷的笔直和平衡。

• Screw Jack Positioning Systems are best in applications that require accuracy and precision. These systems are capable of push, pull, tilt, or rolling movements. Screw Jack Positioning Systems are used for positioning satellite dishes that require exact positioning on a target to pick up a signal and other applications that require a high level of precision movement.

• Screw Jack Positioning Systems are also used in applications such as metals manufacturing to keep a steel roll straight and balanced during the production process.

螺旋千斤顶是用来做什么的？

What are screw jacks used for?

螺旋千斤顶用途广泛，常见于工业应用、制造和机械加工领域。它们具有高承载力/操作力比，可通过旋转螺杆轻松调节高度，无论是自动还是手动调节，都能为操作人员提供高可靠性和同步性。工业螺旋千斤顶的优势在于，它们可以并联使用，以相同的速度进行机械升降。螺旋千斤顶的应用示例包括：

• 卫星天线移动

• 滚筒升降

• 输送机升降和分流器

• 锯片张紧

• 机器人机械臂

• 工作台面调节和平台

• 焊接定位器

• 开门器

• 空气阻尼器

Screw Jacks are versatile and commonly found in industrial applications, manufacturing, and machining. They have a high loadbearing-to-effort ratio and the ability to easily adjust heights by turning a screw, either automatically or manually, providing high reliability and synchronization capabilities to the operator. An advantage of industrial screw jacks is that they can be used in tandem to mechanically lift and lower at the same speed. Some examples of applications where screw jacks are used include:  

• Satellite dish antenna movement

• Roll lifts

• Conveyor lifts and diverters

• Saw blade tension

• Robotics manipulators

• Workplace table adjustments and platforms

• Welding positioners

• Door openers

• Air dampeners

螺旋千斤顶有哪些类型？

What are the different types of screw jacks?

螺旋千斤顶主要分为两大类：机械螺旋千斤顶和滚珠丝杠千斤顶。选择合适的螺旋千斤顶对应用性能至关重要。正确选择合适的螺旋千斤顶，可以延长使用寿命，降低应用故障或损坏的风险，从长远来看，也是一种经济高效的解决方案。

There are two main types of screw jacks: machine screw jacks and ball screw jacks. Selecting the right screw jack is critical to the performance of your application. When done correctly, your screw jack will have a durable, long lifespan with reduced application failure or damage, and be a cost-efficient solution in the long term.

机械丝杠千斤顶

Machine Screw Jacks

机械丝杠千斤顶，也称为梯形丝杠千斤顶、蜗轮蜗杆千斤顶或锥齿轮千斤顶，可用作线性致动器，通过手动或齿轮或电机驱动，实现推、拉和施加压力等功能。由于许多机械丝杠千斤顶具有相同的齿轮比，因此可以采用单台、串联或多台配置，从而能够以相同的速度提升分布不均的负载。事实上，大多数高齿轮比机械丝杠千斤顶都具有自锁功能，能够无限期地将重物保持在正确位置，而不会发生蠕动，从而提高负载的稳定性和安全性。

机械螺旋千斤顶的特点：

• 适用于持续振动的应用环境

• 可用作线性执行器，实现推、拉和施加压力

• 具有固有的负载保持功能

• 提供更广泛的承载能力范围

• 提供更多特殊功能或材料选择，并有多种配置可选

• 具有可靠的机械定位功能

• 升降速度均匀

• 可实现千分之一英寸的精确定位

• 提供自锁配置，具有更高的齿轮比，在螺旋千斤顶不受振动影响的情况下，具有固有的负载保持功能

• 尺寸最大可达 20 英尺，承载能力最大可达 300 吨

• 可选配防反冲型号，承载能力范围为 1/4 吨至 150 吨

• 标准升降增量为 1 英寸

• 采用耐磨青铜蜗轮。通过精确滚齿加工，可实现更大的齿轮接触面积

• 蜗轮可根据您的应用需求选择双轴或单轴延伸

• 外壳选项包括：

- 1/4吨至1吨型号采用铝制材料

- 2吨至50吨型号采用球墨铸铁材料

- 75吨至300吨型号采用铸钢材料

Machine screw jacks, also known as ACME screw jacks, worm gear actuators, or bevel gear jacks, can be used to push,pull, and apply pressure as linear actuators manually or by means of gears or motors. Machine screw jack models can be used in single, tandem, or multiple arrangements because many feature the same gear ratio, allowing for unevenly distributed loads to be raised at the same speed. In fact, most of our machine screw actuator models with higher ratios are self-locking and will hold heavy loads in position indefinitely without creep for more stability and increased safety for the load.

Machine screw jacks feature:

• Favorable in applications subject to constant vibration

• Can be used to push, pull, and apply pressure as linear actuators

• Inherently load holding

• Offer a broader capacity range

• Offer a greater selection of special features or materials and are available in multiple arrangements

• Feature positive, mechanical positioning

• Uniform lifting speed

• Enable precise positioning within thousandths of one inch

• Available in self-locking configurations that feature higher gear ratios that are inherently load holding if the screw jack is not subject to vibration

• Available in sizes up to 20 feet and up to 300 tons capacity

• Anti-backlash models are available as options for ¼- to 150-ton capacities

• Available with standard lifts in increments of one inch

• Feature wear-resistant bronze Worm Gear. This allows for greater gear contact through accurate hobbing

• Worm available with double or single shaft extension based on your application need

• Housing options include:

- Aluminum on ¼ to 1-ton models

- Ductile iron on 2 to 50-ton models

- Cast steel on 75 to 300-ton models

滚珠丝杠千斤顶

Ball Screw Jacks

滚珠丝杠千斤顶，也称滚珠丝杠执行器，采用低摩擦滚珠丝杠和螺母设计。滚珠丝杠千斤顶齿轮箱上的滚珠螺母配备回流管，可使合金钢球持续循环。与机械丝杠千斤顶相比，这使其在负载下使用寿命更长，且达到指定推力所需的功率更低。此外，由于其独特的设计，滚珠丝杠千斤顶比其他机械执行器能更高效地移动负载和施加力。

滚珠丝杠千斤顶的特点：

• 比机械丝杠千斤顶更高效地移动负载和施加力

• 运行速度更快

• 负载下使用寿命更长，滚珠丝杠和滚珠螺母的使用寿命可预测

• 通过减少丝杠摩擦，降低所需功率

• 允许多个单元同步运行

• 可承受拉伸或压缩的满载

• 容量范围从 0.5 吨到 50 吨，提供正置和倒置的平移和旋转配置，并可配置用于连续运行和防旋转应用

• 蜗杆可选择双轴或单轴延伸。除 50 吨滚珠丝杠执行器外，所有执行器型号的蜗杆顺时针旋转均可增加负载

• 蜗杆采用耐磨青铜制成，并经过精确滚齿加工，以实现更大的齿轮接触面积

Ball screw jacks, also called ball screw actuators, feature a low-friction ball screw and nut design. The ball nut on the ball screw jack gearbox is equipped with return tubes for continuous recirculation of alloy steel balls. This results in longer life at load and requires less power to achieve a specified thrust compared to machine screw jacks. Also, due to their design, ball screw jacks move loads and apply force more efficiently than other mechanical actuators.

Our ball screw jacks feature:

• Ability to move loads and apply force more efficiently than machine screw jacks

• Allow for faster operation

• Feature a longer life under the load with a predictable ball screw and ball nut life

• Require less power by reducing screw friction

• Permit synchronization of multiple units

• Handle full loads in tension or compression

• Available in capacities from ½ to 50 tons, upright and inverted translating and rotating configurations, and configured for continuous duty and anti-rotation applications

• The Worm is available with double or single shaft extension. A clockwise rotation of this end raises load on all actuator models except for 50-ton ball screw actuator units

• Worm gear wear-resistant bronze is accurately hobbed for greater gear contact

螺旋千斤顶的特性和选项

Screw Jack Features and Options

根据应用需求，机械螺旋千斤顶和滚珠丝杠千斤顶均可配备多种特性和选项。

以下是一些特殊类型的螺旋千斤顶：

• 不锈钢千斤顶顶部和底部均配有碳钢轴承，允许负载双向移动。这些不锈钢千斤顶可改装到之前使用非不锈钢执行器的应用环境中。它们还具有密封的齿轮腔，可防止水和其他杂质进入，适用于恶劣环境。

• 防反冲螺旋千斤顶具有反冲控制功能，有助于防止负载应用中出现不必要的移动。防反冲螺旋千斤顶能够消除螺杆和内部螺母之间的间隙，满足对高精度定位的需求。它们提供标准、可选和数值比率三种规格，并且大多数量程均采用不锈钢材质。

• 为什么防反冲控制如此重要？即使在最佳的制造工艺中，螺杆和配合螺母之间也可能存在间隙。在负载可双向移动的应用中，可能会出现此类间隙，导致负载移动时受控机构出现反冲和不可接受的位移或振动。这些位移会导致过早磨损，降低负载移动的精度，常见于造纸、塑料、薄膜、钣金加工、卫星和其他负载反转应用中。带防反冲控制的螺旋千斤顶有助于避免这些问题。

• 电动/螺旋千斤顶需要外部电源才能运行。根据应用的不同，电源可以是电动机或手动手轮。对于使用电动机的动力应用，电机可以通过 C 型接口适配器、直角减速器连接到执行器，或者通过联轴器和连接轴远程连接电机和执行器蜗杆轴。

• 微型千斤顶可实现极其精细的调节，并可移动高达 1000 磅的负载。

• 阳极千斤顶是标准执行器的重型版本，非常适合高温应用，例如铝制造和冶炼。阳极千斤顶的蜗轮比其他螺旋千斤顶的蜗轮更大，采用耐磨青铜制成，蜗杆则采用热处理合金钢。它们还配备更大的轴承和重型密封件，以防止磨蚀性氧化铝粉尘的侵蚀。阳极千斤顶具有较大的过载能力，能够承受框架热胀冷缩引起的侧向载荷应力，并且能够承受压缩过载。

• 公制千斤顶包含与标准系列执行器相同的所有特性和优点，但专为必须使用公制单位的应用而设计。因此，它们的一些特性包括以吨为单位的负载能力、以毫米为单位的安装尺寸、公制螺钉直径、公制紧固件和公制螺栓中心距。公制千斤顶常见于产品在美国制造并出口到其他国家/地区的应用中。

• 螺旋千斤顶系统是一套完整的组件包，包含起升或定位应用所需的所有部件。例如，它可以连接两个或多个执行器，实现永久同步。还可以将螺旋千斤顶与联轴器、轴承座、齿轮箱等配合使用，以满足特定应用或系统布局需求。此外，还可以添加特殊组件，例如波纹管护套，以保护螺旋桨免受污染。

Both machine screw jacks and ball screw jacks can be manufactured with a variety of features and options depending on application needs.

Some of these special types of screw jacks include:

• Stainless Steel Jacks are fitted with carbon steel load bearings on the top and bottom, allowing loads to move in either direction. These stainless steel jacks can be retrofitted into applications where any non-stainless steel actuators have been used. They also feature a sealed gear cavity to keep water and other containments out for use in harsh environments.

• Anti-Backlash Screw Jacks feature backlash control that helps prevent unwanted movement in your load application. Anti-backlash screw jacks have the ability to eliminate play between the screw and the internal nut for when you need very accurate positioning. They are available in standard, optional, and numerical ratios, as well as stainless steel for most capacities.

• Why is anti-backlash control important? Even in the best manufacturing processes, clearances between a screw and a mating nut can be found. In applications where loads can be moved in either direction, these types of clearances can be found, causing backlash and unacceptable movement or vibration in the controlled mechanism as the load moves. These movements cause premature wear and reduce the precision of load movement and are commonly found in applications like paper, plastic, film, sheet metal processing, satellite, and other load reversing applications. Screw jacks with anti-backlash control can help avoid these issues.

• Powered/Motorized Screw Jacks are jacks that require an external power source to operate. Based on the application, the power source could be an electric motor or a manual hand wheel. For powered applications using an electric motor, the motor can be connected to the actuator via a C-face adapter, right angle gear reducer, or by remotely connecting the motor and actuator worm shaft with a coupling and connecting shaft.

• Micro-Miniature Jacks allow for extremely fine and precise adjustment and can move loads up to 1,000 lbs.  

• Anode Jacks are the heavy-duty version of a standard actuator and are ideal for high-temperature applications, such as aluminum manufacturing and smelting. The worm gears in anode jacks are larger than those found in other screw jacks and are made of wear-resistant bronze with heat-treated alloy steel worms. They also have larger bearings and heavy-duty seals to protect against abrasive alumina dust. Anode jacks also have a large overload capacity to handle side-loading stress caused by thermal expansions and contractions of the frames and are built to take compressive overloads.

• Metric Jacks include all the same features and benefits as the standard line of actuators but are designed for applications that must be metric. Therefore, some of their features include load capacities in tonnes, mounting dimensions in millimeters, metric screw diameters, metric fasteners, and metric bolt centers. Metric jacks are commonly found in applications where products are manufactured in the US and shipped to other countries.

• Screw Jack Systems are a complete package of all the components you need for your lifting or positioning application. For example, these can be used to interconnect two or more actuators to provide permanent synchronization. You can also pair screw jacks with couplings, pillow blocks, gearboxes and more to meet the specific needs of your application or system layout. You can also add special components, such as bellows boots, to protect the screws from contaminants.

声明：

-文章转载自CMCO，由爱泽工业翻译，如有侵权，请联系删除！

-如有偏颇，欢迎指正！