Double-lifting device for towing type traveling vehicle

US11440512B2 · kind B2 · utility

Inventors

• Guozhong Wang · Hangzhou City, CN
• Laiming Yu · Hangzhou City, CN
• Jigang Yan · Hangzhou City, CN
• Jinming Shi · Hangzhou City, CN
• Jiangqiang Lu · Hangzhou City, CN
• Feng Tian · Woburn, US
• Congcong Wang · Shouguang City, CN
• Lingling Wang · Shanghai, CN

Key dates

• Filing date: Oct 12, 2019
• Grant date: Sep 13, 2022
• Expiry date: Mar 11, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2025/2084
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A double-lifting device for a towing type traveling vehicle, has an active leg, a driven leg, a transmission member, a geared motor, a gear reduction structure, a first reverse gear reduction structure, and a second reverse gear reduction structure; the geared motor, the gear reduction structure, and the first reverse gear reduction structure are sequentially and drivably connected; the output end of the gear reduction structure is also used to drive the transmission member, and the transmission member is used to drive the second reverse gear reduction structure. The double-lifting device is able to achieve synchronous lifting and lowering. With a simple structure, ifs stable, easy to operate, and provides mechanical overload protection.