US 11,999,600 B2
Lifting gear
Detlef Struck, Wuppertal (DE); and Wolfram Schneebeck, Wuppertal (DE)
Assigned to COLUMBUS MCKINNON INDUSTRIAL PRODUCTS GMBH, Wuppertal (DE)
Appl. No. 17/629,069
Filed by COLUMBUS MCKINNON INDUSTRIAL PRODUCTS GMBH, Wuppertal (DE)
PCT Filed Feb. 13, 2020, PCT No. PCT/DE2020/100100
§ 371(c)(1), (2) Date Jan. 21, 2022,
PCT Pub. No. WO2021/013285, PCT Pub. Date Jan. 28, 2021.
Claims priority of application No. 10 2019 120 036.9 (DE), filed on Jul. 24, 2019.
Prior Publication US 2022/0274813 A1, Sep. 1, 2022
Int. Cl. B66D 1/06 (2006.01); B66D 3/14 (2006.01); B66D 5/14 (2006.01); B66D 5/34 (2006.01)
CPC B66D 1/06 (2013.01) [B66D 3/14 (2013.01); B66D 5/14 (2013.01); B66D 5/34 (2013.01); B66D 2700/05 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lifting gear, comprising:
a housing;
a load chain wheel;
a driveshaft configured to drive the load chain wheel via a transmission, wherein the load chain wheel and the driveshaft are rotatably supported in the housing;
a load pressure brake;
a safety brake comprising:
a locking disc with locking teeth,
a control disc with a plurality of control cams,
a catch hook, and
a spring element, wherein
the locking disc is rotatable relative to the control disc,
the catch hook comprises a latch contour at a front end of the catch hook, and a sensing contour at a rear end of the catch hook, and
the sensing contour rests under a spring force of the spring element on the control disc, and the latch contour is lockingly engageable with any one of the locking teeth of the locking disc; and
an unlocking mechanism configured to return the locking disc and the control disc to a starting position, wherein
the unlocking mechanism comprises a reset button and a blocking body, and
the blocking body is configured to be brought by actuation of the reset button into an unlocked position in which the locking disc is held by the blocking body in such a way that the control disc is rotatable relative to the locking disc, and the control disc and the locking disc are transferrable to the starting position.