Bidirectional machine-room-free speed limiter of single brake pressing-plate device

A technology of brake plate and single brake, which is applied in the direction of elevator, transportation and packaging, etc., and can solve the problem that the speed limiter cannot be used
CN103523628AInactive Publication Date: 2014-01-22XJ SCHINDLER XUCHANG ELEVATOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XJ SCHINDLER XUCHANG ELEVATOR
Publication Date
2014-01-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a bidirectional machine-room-free speed limiter of a single brake pressing-plate device. A rope wheel and a ratchet wheel are coaxially assembled on a base, a pawl is assembled on one side of the wheel face of the rope wheel in a rotating mode, a pawl torsion spring 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 further assembled on the wheel face of the rope wheel in a rotating mode, and a positioning torsion spring is arranged between the pawl positioning structure and the rope wheel. The jacking-pressing end of the pawl positioning structure is matched with the pawl in an elastic jacking-pressing mode, two gravity hammers are further assembled on the other side of the wheel face of the rope wheel in a rotating mode, the triggering portion of the pawl positioning structure is provided with a jacking head which is matched with a power hammer in a pushing-pressing mode when heads of the gravity hammers turn to the outer edge of the rope wheel in a protruding mode, and the pawl is provided with a lifting reset rod which abuts against and presses hammer handles of the gravity hammers to enable the pawl to be separated from the ratchet wheel and enable the pawl positioning structure and the pawl to be reset when the hammer handles of the gravity hammers turn to the outer edge of the rope wheel in a protruding mode. The pawl and the pawl positioning structure do not need manual resetting and can be used in an elevator without a machine room.
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Description

technical field

[0001] The invention relates to a speed governor for limiting the running speed of an elevator, in particular to a two-way machine-roomless speed governor with a single brake pressing plate device. Background technique

[0002] The overspeed governor is a key part of elevator safety. There is a kind of such two-way overspeed governor in the prior art. A sheave and a ratchet are provided for coaxial rotation, and a wire rope is wound on the sheave. The diameter of the ratchet wheel is smaller than the diameter of the rope wheel. A ratchet is installed on the wheel surface of the rope wheel. A torsion spring is arranged between the ratchet and the sheave. The trend of card slot matching, when the pawl is in a free state, the pawl and the ratchet will be in a clamped state, and a block is protruded from the end of the pawl, and the two sides of the block can be inserted into the two sides of the slot. There are two groove walls to stop the ratchet from moving ...

Claims

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