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US 3,942,610 AGranted
Spreading disc brake with removable shoes
OwnerHermann Klaueinventor
Life of this patent
Estimating the term…
Abstract
A brake assembly having a brake housing which has an annular member enclosing an annular gap of channel-like cross-section open at its radially exterior side is provided with at least one pair of segmental brake shoes. Annular actuating rings are disposed in the gap between the brake shoes and hydraulically actuated members are associated with the actuating rings to move them against the brake shoes and press the brake shoes against the braking surface. The hydraulic actuating members may be L-shaped slidable members which enclose the sealed annular space into which hydraulic fluid is introduced into the groove, a pair of hydraulic cylinders having pistons which move actuating rings associated with the brake shoes or a ring cylinder and ring piston assembly.
Claims7
A brake assembly comprising:
- a brake housing comprising two annular covers bolted together and to the hub of a wheel at their inner circumferences to be rotable therewith, said covers forming an annular gap therebetween open on its radially exterior side, the opposite inner sides of said two covers providing annular braking surfaces;
- two pairs of semi-circular brake shoes disposed from the radially exterior side into said gap having friction linings facing the adjacent braking surfaces, each brake shoe having a shoulder with a flanked end, the shoulders of complementary brake shoes being oppositely disposed and the flank ends of said brake shoes providing abutments at one another, said flank ends being vertically situated to the line connecting the shoulders, each of said pairs of brake shoes being supported by two diametrically opposite disposed brackets extending over said annular gap and being pivotally mounted on a stationary carrier, said brake shoes being insertable into the gap from the radially exterior direction after removing the brackets and thereby uncovering said gap without dismantling the brake assembly;
- brake shoes operating means separate from the brake shoes and disposed therebetweeen comprising a cooperating ring cylinder and ring piston, said cylinder and piston enclosing therebetween an annular space connected to a fluid conduit of a hydraulic system for extending said annular space, said ring cylinder being provided with two diametrically opposite disposed shoulders providing an abutment for said ring cylinder on said brackets, said annular space being sealed by sealing means comprising two sealing rings fitted in ring groves provided in the surfaces of the ring cylinder and the ring piston respectively, the operating means further comprising heat insulating rings attached to the ring cylinder and to the ring piston respectively and facing the opposite brake shoes, and means for automatic and infinitely, adjustment to cause a constant clearance between the brake shoes and the braking surfaces of the brake housing.
In a brake assembly comprising
- a brake housing comprising an annular member having an annular gap of channel-like cross-section open on its radially exterior side, the opposite inner sides of said channel-like gap providing annular braking surfaces, said brake housing being attachable to be rotatable jointly with a wheel of an assembly to be braked;
- at least one pair of segmental brake shoes disposed from the radially exterior side into the channel-like gap having friction faces facing the adjacent braking surfaces, means for moving said brake shoes into contact with said braking surfaces and means for non-rotatably supporting each pair of brake shoes in the gap comprising a fixed support means which carries members disposed over the gap and pivotable from over said gap to uncover a portion of the gap whereby the brake shoes are insertable into the gap without dismantling the brake shoe moving means, the improvement wherein said means for moving the brake shoes into contact with said braking surfaces comprises a pair of annular actuating rings disposed between each pair of brake shoes and means for moving the actuating rings apart and against the brake shoes to press them against the braking surfaces comprising a pair of sliding ring members movable axially relative to each other and against said actuating rings, said annular members enclosing an annular fluid tight space therebetween, and means for introducing fluid under pressure into the said space.
In a brake assembly comprising
- a brake housing comprising an annular member having an annular gap of channel-like cross-section open on its radially exterior side, the opposite inner sides of said channel-like gap providing annular braking surfaces, said brake housing being attachable to be rotatable jointly with a wheel of an assembly to be braked;
- at least one pair of segmental brake shoes disposed from the radially exterior side into the channel-like gap having friction faces facing the adjacent braking surfaces, means for moving said brake shoes into contact with said braking surfaces and means for non-rotatably supporting each pair of brake shoes in the gap comprising a fixed support means which carries members disposed over the gap and pivotable from over said gap to uncover a portion of the gap whereby the brake shoes are insertable into the gap without dismantling the brake shoe moving means, the improvement wherein said means for moving the brake shoes into contact with said braking surface comprises brake shoes operating means separate from the brake shoes and disposed therebetween comprising a cooperating ring cylinder and ring piston, said cylinder and piston enclosing therebetween an annular space connected to a fluid conduit of a hydraulic system for extending said annular space, said ring cylinder being provided with two diametrically opposite disposed shoulders providing an abutment for said ring cylinder on said brackets, said annular space being sealed by sealing means comprising two sealing rings fitted in ring grooves provided in the surfaces of the ring cylinder and the ring piston, respectively.
Dependencies are inferred from the claim text.