The invention belongs to the technical field of elevator parts, and particularly relates to safety tongs for a circular guide rail and an elevator. The safety tongs comprise a tongs body with a guide rail channel and sliding wedge blocks symmetrically installed on the tongs body along the two sides of the guide rail channel, and a lifting wedge block is arranged on the side, facing the guide rail channel, of each sliding wedge block; the two sliding wedge blocks are located on the opposite inner side faces of the U-shaped plate spring respectively, a plurality of first rolling balls are arranged between the lifting wedge blocks and the corresponding sliding wedge blocks to be in rolling fit, and second rolling balls are arranged between the end portions of the sliding wedge blocks and the clamp body to guide the sliding wedge blocks to move transversely. The lifting wedge block is provided with an arc face matched with the circular guide rail in a friction braking mode. According to the safety tongs for the circular guide rail, in the process from the arc surface of the lifting wedge block to contact with the circular guide rail to brake friction, the contact surface of the arc surface and the circular guide rail is adjusted in a self-adaptive mode through the spherical structure design of the first rolling ball and the second rolling ball, and the brake stability is improved.
本发明属于电梯部件技术领域,具体涉及一种圆形导轨用安全钳及电梯,安全钳包括具有导轨通道的钳体、沿导轨通道的两侧分别对称安装于钳体的滑动楔块,各滑动楔块朝向导轨通道的一侧设有提拉楔块,两滑动楔块分别位于U型板簧的相对内侧面,所述提拉楔块与其对应的滑动楔块之间设有数个第一滚球以滚动配合,滑动楔块的端部与钳体之间设有第二滚球以导向滑动楔块横移;其中,提拉楔块具有与圆形导轨摩擦制动配合的圆弧面。本发明的圆形导轨用安全钳,在提拉楔块的圆弧面接触圆形导轨至制动摩擦的过程中,利用第一滚球与第二滚球的球形结构设计,自适应调整圆弧面与圆形导轨的接触面,提升制动稳定性。
Safety tongs for circular guide rail and elevator
一种圆形导轨用安全钳及电梯
22.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B66B Aufzüge , ELEVATORS |
Wedge block for elevator safety tongs, preparation method and elevator safety tongs
Europäisches Patentamt | 2023
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