Abstract:
A disk brake and hub assembly for a vehicle wheel has an annular brake housing open at its radially exterior side and has circumferentially spaced openings in its radially inward side for air flow into the housing to cool the working parts of the brake assembly. The housing is formed of two complementary parts, one on the wheel side and the other spaced axially therefrom to leave a channel for the brake disks and fluid operated brake actuating parts. The two parts of the housing form radially extending walls which provide braking surfaces and at circumferentially spaced points have axially extending wall segments which provide a partially closed radially inward side for the housing. These wall segments are integral with yoke-shaped members which extend radially inwardly therefrom and are adapted to be fastened to circumferentially spaced extension arms of the hub flange to secure the housing to the hub for rotation therewith. Air flows between the extension arms through the openings provided in the segmented inner wall of the housing to cool the disk brake assembly and housing. The brake disks can be replaced by removing the wheel side part of the brake housing without dismantling the brake actuating mechanism.
Abstract:
A fully-lined disk brake assembly has two disk brake disks disposed in an annular channel of a brake housing. The brake housing rotates with the wheel and a pair of axial movable annular brake disks fixed against rotation with the wheel are disposed in the channel. A fluid actuated ring cylinder and piston assembly, stepped ring cylinders or similar brake actuation mechanism is disposed in the channel between the brake disks. The brake housing is assembled from two separable annular members which are fastened together by screws or a snap-ring. The wheel side member of the brake housing is adapted to receive the wheel bolt for securing the brake housing to a flange on the hub or axle shaft of the wheel assembly.
Abstract:
A full lining operating brake for a heavy duty vehicle is also provided with a parking or auxiliary brake in the form of a heat storing stack of brake plates within the brake carrier of the operating brake and between the carrier and a sleeve connected to the hub upon which the wheel is mounted. A belleville washer spring stack acts upon the stack of plates through a force multiplier disk and is itself relieved to permit the wheel to rotate by the pneumatic displacement of a tube which draws the spring stack away from the brake plate stack.
Abstract:
A vehicle with a transmission shiftable in steps by means of friction clutches includes starting unit at the input or output of the transmission comprising a planetary gear having several components, wherein a first of the components is driven. A braking device has at least one brake member connected with a second of the components for rotation therewith, fricton bodies for braking the brake member by dry frictional contact, and actuating means and cooling means for the friction bodies. An actuating system is provided for the transmission and the starting unit which, in a first mode of actuation, holds the brake member fixed on a stationary structural member by means of the friction bodies during automotive operation, and in a second mode of actuation, slidingly brakes the brake member when starting the vehicle. The actuating system in the first mode of actuation briefly releases the brake member from the stationary member during the shifting process so as to suppress any shock produced during shifting.
Abstract:
In a vehicle a drive unit adapted to drive four wheels, the wheels being driven by axle shafts. The drive unit comprises a change speed transmission with its longitudinal axis extending lengthwise to the vehicle longitudinal direction. The drive unit further comprises a transfer gear assembly connected to the output of the transmission and to two transfer shafts which extend parallel to the vehicle longitudinal direction. The drive unit further comprises differential gears driven by the transfer shafts and driving the axle shafts. A housing encloses commonly the change speed transmission, the transfer gear assembly, at least one of the transfer shafts and at least one of the differential gears. The vehicle may be equipped with a starting device attached to the drive unit and employing a brake assembly which may be watercooled.