The invention discloses a bidirectional speed governor with a single brake pressing plate with a pawl automatic restoring function. A rope wheel and a ratchet wheel are coaxially assembled on a base, a pawl is rotatably assembled on one side of the wheel surface of the rope wheel, a pawl torsion spring which enables the pawl to turn to the ratchet wheel and to be in clamping fit with clamping grooves of the ratchet wheel is arranged between the pawl and the rope wheel, a pawl positioning structure is further rotatably assembled on the wheel surface of the rope wheel, a positioning torsion spring is arranged between the pawl positioning structure and the rope wheel, the top pressing end of the pawl positioning structure is in elastic press-fit with the pawl, a disc is coaxially and fixedly arranged on the wheel surface, far away from a gravity hammer, of the ratchet wheel, and pushing teeth which tilt in a direction consistent with the tilting direction of the teeth of the ratchet wheel are arranged on the outer edge of the disc, a restoring device is fixedly arranged on the pawl, and the restoring device is provided with a restoring inclined surface which is in slidable pushing fit with the pushing teeth to enable the pawl to be restored when the ratchet wheel reversely rotates after the pawl locks the ratchet wheel. The pawl and the pawl positioning structure of the bidirectional speed governor do not need to be restored manually and can be applied to elevators without machine rooms.
Bidirectional speed governor with single brake pressing plate with pawl automatic restoring function
2015-07-15
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |
European Patent Office | 2015
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