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Tel:86-571-82793342

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Features Of Welding Handwheels

Features Of Welding Handwheels  

China is currently no perfect standard. As the design of the overall design of the electric device is different, therefore, the requirements of the welding hand wheel is not the same.

First, the master speed ratio of the welding hand wheel

In the manual-electric switching structure of the electric device, the manual speed ratio may be 1: 1 or more than 1: 1 due to the magnitude of the output torque of the electric device and the overall design. The so-called master speed ratio, refers to the manual speed ratio greater than 1: 1, Welding Hand Wheel generally between 1:10 and 1: 100. As the manual speed ratio, welding hand wheel operating force is relatively small, generally a few kilograms of force, but the welding hand wheel rotation of the total number of revolutions, up to tens to thousands of laps. Due to this feature, the radius of the welding hand wheel is small, generally not more than 300 mm; welding hand wheel lighter, the strength of the welding hand wheel is lower. In order to facilitate rapid rotation, Welding Hand Wheel such a welding hand wheel is equipped with a handle. To prevent the handle friction heat, affect the operation, welding hand wheel should have live casing. The length of the casing can not be less than 100 mm.

Second, low hand speed ratio of welding hand wheel

Low hand speed ratio of the electric device mounted welding hand wheel, mostly through the clutch directly connected with the electric device output shaft. Because of this, welding hand wheel needs a larger operating force, generally up to dozens of kilograms to hundreds of kilograms of force. Welding Hand Wheel The number of turns is relatively small, from a few laps to dozens of laps, but also up to several hundred laps.

To analyze the operating torque characteristics of the gate and globe valves, we know that their operating torque values are the largest at the moment of opening and closing, and are lower in the middle. It is also based on this mechanism, 1: 1 manual operation have the possibility of use. But hundreds of kilograms of force welding hand wheel, even if it is instantaneous, if not take the appropriate measures, Welding Hand Wheel it is difficult to achieve. Corresponding to different measures, welding hand wheel structure has the following:

(1) Welded handwheels supplied with sleeves and wrenches

In the moment the valve opens and closes, you can put a tube on the spoke outside the hub to extend the arm. After this moment, the required operating torque quickly decreased, Welding Hand Wheel then you can remove the casing, direct hand operation.

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Contact Us
Hangzhou Xiaoshan Chuangye Metal Processing Factory

Address: Zixia Village, Xintang Street, Xiaoshan District, Hangzhou City, Zhejiang Province, China

Tel: +86-571-82793342

Fax: 86-571-82778852

E-mail: hzxscyhdc@126.com

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