The invention discloses a one-way speed limiter with an automatic resetting pawl. A rope wheel and a ratchet wheel are coaxially and rotationally assembled on a base of the one-way speed limiter, wherein a pawl is rotationally assembled on one side of the surface of the rope wheel; a pawl torsion spring for enabling a pawl steering ratchet wheel to be matched with a clamping groove of the ratchet wheel is arranged between the pawl and the rope wheel; a pawl positioning structure is also rotationally assembled on the surface of the rope wheel; a positioning torsion spring is arranged between the pawl positioning structure and the rope wheel; a jacking end of the pawl positioning structure is in elastic jacking fit with the pawl; two gravity hammers are also rotationally assembled on the other side of the surface of the rope wheel; a disk is coaxially and fixedly arranged on the surface, far away from the gravity hammers, of the ratchet wheel; thrust teeth of which the inclination directions are consistent with those of wheel teeth of the ratchet wheel are distributed on the outer edge of the disk; a resetting device is fixedly arranged on the pawl, and comprises a reset inclined plane which is in sliding thrust fit with the thrust teeth when the ratchet wheel reversely rotates after being locked by the pawl, so that the pawl resets. The pawl and the pawl positioning structure disclosed by the invention do not need to be manually reset, and can be applied to an elevator without a machine room.
One-way speed limiter with automatic resetting pawl
2015-06-17
Patent
Elektronische Ressource
Englisch
IPC: | B66B Aufzüge , ELEVATORS |
Bi-directional speed limiter with pawl capable of being reset automatically
Europäisches Patentamt | 2015
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