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US 12,691,453 B2Granted
Locking rotor rotation device
AssigneeTerex GB Limited
InventorDavid Gibson
Life of this patent
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Abstract
A rotor rotation device the rotor of a crusher includes a drive mechanism comprising a worm shaft and corresponding worm wheel. The worm wheel can selectively be coupled to said rotor in order to effect controlled rotation of the rotor, e.g. to facilitate maintenance of the crusher. The worm shaft cannot be back-driven by the rotor which allows the drive mechanism to serve as a lock against unwanted or uncontrolled rotation of the rotor.
Claims20
A material processing apparatus comprising:
- a crusher comprising a rotor;
- a powered drive system for rotating the rotor of the crusher to perform a crushing function;
- and
- a rotor rotation device coupled to the crusher for controlling rotation of the rotor during maintenance of the crusher, the rotor rotation device comprising:
- a drive mechanism;
- and
- coupling means for selectively coupling the drive mechanism to the rotor;
- wherein the rotor rotation device is operable in a driving state in which the coupling means couples the drive mechanism to the rotor to allow rotation of the rotor by the drive mechanism, or in a non-driving state in which the coupling means does not couple the drive mechanism to the rotor;
- wherein the drive mechanism comprises a worm shaft and a worm wheel, the coupling means coupling the worm wheel to the rotor in the driving state;
- and
- wherein the worm shaft and the worm wheel are mutually configured to prevent back-driving of the worm shaft by the worm wheel in the driving state.
8 more elements
Dependencies are inferred from the claim text.