The invention discloses a load braking device, which comprises a drive housing and a main frame; the drive housing is arranged on a spindle unit of a support through a unidirectional locking mechanism; the support is fixed; the main frame and the drive housing are connected through stacked friction disks; an input gear and a load gear are coaxially sleeved on the main frame at one side of the friction disks; the input gear is rotatably sleeved on the main frame, and is arranged by clinging to the friction disks; the load gear is fixedly sleeved on the main frame; the input gear is provided with an axial first ratchet wheel; the load gear is oppositely provided with an axial second ratchet wheel; ratchets of the first ratchet wheel and ratchets of the second ratchet wheel are closely bitten along the axial direction; the ratchets are all unidirectional teeth, and respectively comprise an oblique plane for generating axial thrust while circumferentially transmitting rotary power; another face of the oblique plane of each ratchet is a ratchet back face for only circumferentially transmitting the power; the locking direction of the unidirectional locking mechanism is consistent with the power transmission direction of the oblique plane of each ratchet.
Load braking device and lifting appliance applying same
2015-08-12
Patent
Electronic Resource
English
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