The invention discloses elevator safety tongs which comprise lifting rods, a main tong body and an auxiliary tong body. The main tong body is arranged above the auxiliary tong body. Two main wedge blocks are arranged inside the main tong body. Each main wedge block is connected with one lifting rod. Two auxiliary wedge blocks are arranged inside the auxiliary tong body. Main containing grooves areformed in the main wedge blocks. Openings of the main containing grooves face a guide rail. Rollers are arranged inside the main containing grooves. The roller parts stretch out of the main containing grooves. Pulling ropes are wounded on the rollers. The main wedge blocks are provided with through holes facing the corresponding auxiliary wedge blocks. The head part of the corresponding pulling rope of each main wedge block penetrates through the corresponding through hole and is fixedly installed on the corresponding auxiliary wedge block. An elevator adopts the elevator safety tongs. The elevator safety tongs and the elevator have the advantages that under the circumstance that the main tong body loses efficacy, the auxiliary tong body is automatically started to generate braking force,and the safety coefficient is increased; and after the elevator adopts the structure, double security is achieved during failure compared to conventional elevators, and safety of a lift car is guaranteed.
本发明公开了电梯安全钳,包括提拉杆、主钳体和副钳体,主钳体设置在副钳体上方,主钳体内设有两块主楔块,每块主楔块均与一根提拉杆相连,副钳体内设有两块副楔块;主楔块内开有主容纳槽,主容纳槽开口朝向导轨,主容纳槽内设有滚轮,滚轮部分伸出主容纳槽,滚轮上绕有牵引绳,主楔块上开有朝向对应副楔块的通孔,每块主楔块的牵引绳的头部穿过通孔固定安装在对应的副楔块上。一种电梯,采用上述电梯安全钳。本发明的优点是:在主钳体失效的情况下会自动启动副钳体产生制动力,提高了安全系数。电梯采用上述结构后,相对于普通电梯在失效时有了双重保障,确保轿厢安全。
Elevator safety tongs and elevator
电梯安全钳及电梯
2020-10-16
Patent
Electronic Resource
Chinese
IPC: | B66B Aufzüge , ELEVATORS |
Wedge block for elevator safety tongs, preparation method and elevator safety tongs
European Patent Office | 2023
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