F - Mech Eng,Light,Heat,Weapons – 16 – D
Patent
F - Mech Eng,Light,Heat,Weapons
16
D
F16D 55/00 (2006.01) F16D 55/36 (2006.01) F16D 59/02 (2006.01) F16D 65/00 (2006.01) F16D 65/14 (2006.01) H02K 7/102 (2006.01)
Patent
CA 2055759
SIMPLIFIED MOTOR BRAKE ABSTRACT A motor brake mechanism (10) includes retain- ing structure (46) permitting removal and replacement of friction discs (16, 18) without disassembling the brake mechanism. When the brake mechanism is detached from the motor, removal of a single bolt (46) permits radial removal and replacement of the friction discs. Minimiz- ing of brake drag is enabled by adding low force compres- sion springs (162, 164, 166, 168, 170, 172) without otherwise modifying the structure which prevents rotation of the pressure plates (38, 40) relative to the end plate (28) of the brake mechanism (10), wherein a first set of studs (42, 44, 46) provide both functions of non-rotat- ably mounting the pressure plates (38, 40) to the end plate (28) and mounting the low force compression springs, all separate from another set of studs (70, 72) mounting the brake lever (68) to the end plate (28). The brake solenoid (104) is mounted on another set of studs (122, 124) by resilient shock absorbers (126, 128, 130, 132) which perform dual functions of absorbing mechanical shock from the solenoid plunger (106) at the end of its travel stroke and minimizing solenoid buzz. The latter function is provided in conjunction with simplified single nut (148, 150) adjustment of the solenoid abutment surface (120). Separate cover mounting studs are elimi- nated, and the cover (98) is mounted on the same set of studs (70 and 72) which mount the brake lever (68). Improved and simplified pivot bearings are provided by hardened drive pins (64 and 66) providing substantially point contact and facilitating smooth pivotal bearing movement of the brake lever (68). A simplified manual release (182) includes a spacer (206) accommodating two friction discs (16, 18).
Lindner Bernard J.
Lorenz Harold
Borden Ladner Gervais Llp
Rexnord Corporation
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