摘要:
The present invention relates to a rotary electric machine comprising: a stator; a rotor having an axis of rotation, and comprising a tubular end wall defining two opposite braking surfaces; and at least one electromagnetic brake configured for bear simultaneously in a braking configuration against the braking surfaces.
摘要:
An incremental braking method and system in which a braked member which is in motion, e.g., a brake drum, is engaged by a series of flexible stops on a braking member, e.g., a brake shoe, to brake the braked member. A rigid stop on the braked member sweeps past the flexible stops on the braking member to cause vibrations. The vibrations are damped as the flexible stops engage the braked member, thereby inhibiting the motion of the braked member. The flexible stops are of unequal lengths and are provided on springs which allow them to retract into the braking member. In this way, the stops incrementally engage the braked member for smoother and more efficient braking.
摘要:
The present invention relates to a vehicle brake and hub comprising a ring braking member having braking surfaces both to the interior and exterior of the member in combination with a cast hub which includes centrally disposed aligned bearing ports for receiving bearings. The cast hub includes an outwardly exposed securing surface which cooperates with the ring braking member to effect securement of the braking member to the casting and in a manner to accommodate heat transfer therebetween. The cast hub includes intermediate the securing surface and the align ports, fan blades which cause during rotation of the hub an axial flow of air to move across the bearing ports and to extract heat from the fan blades and the securing surface. The fan blades collectively interconnect and structurally secure the securing surface and the bearing ports.
摘要:
A drum brake assembly is described to comprise a dual drum brake housing mounted to a vehicle wheel or shaft to be rotated therewith. The dual drum brake housing has two axially extending, concentric, radially spaced drum surfaces defining an annular channel between them. A torque member is fixed against rotation with the vehicle wheel and an expandable friction lining assembly is mounted to the torque member. The friction lining assembly is positioned within the annular channel and carries radially outward and radially inward facing friction linings. Upon expansion of the friction lining assembly each of the friction linings is moved into contact with the corresponding drum surface, thereby transferring braking force to the wheel. Heat dissipation means are provided for communicating heat from said drum brake assembly to the atmosphere, which means comprises a finned tube extending within said annular channel and forming with the friction lining assembly an endless conduit adapted to receive pressurized fluid to actuate the brake. Preferably, an electrically actuated oscillating piston pump is placed in-line in the finned tube to circulate fluid within the endless conduit.
摘要:
A spot type brake having a disc or preferably ring brake member comprises a pair of brake pads on opposite sides of the brake member and a caliper with a hydraulic actuating unit for clamping the brake pads into engagement the brake member along a braking axis. The piston of the hydraulic actuating unit cooperates with a first brake pad and a bearing surface on the caliper cooperates with a second brake pad. The center or area of the bearing surface is circumferentially offset upstream or behind the braking axis relative to the direction of rotation of the brake member but the actuating unit is centered with respect to the first brake pad.
摘要:
The invention relates to internal-external shoe drum brakes, or so-called "crown" brakes in which the braking member is a drum or crown having braking surfaces formed on the annular inner and outer surfaces.The brake is provided with a calliper mounted on a fixed bracket, the calliper surrounding the crown and being adapted to apply brake shoes mounted on either side of the crown against the braking surfaces.The calliper is mounted on the fixed bracket for radial movement with respect to the crown and to this end is provided with at least one transverse lug formed with an aperture which slidably engages a guide pin mounted on the fixed bracket.The guide lug is formed separately from the calliper and is detachably secured thereto so that it can be released from the calliper when it is desired to change the brake shoes.
摘要:
A brake is disclosed comprising an annular cylindrical braking member with brake shoes respectively on the inside and outside of the braking member which are straddled by a C-shaped caliper member. The caliper member is pivotally and slidably mounted by a composite mounting assembly comprised of a pivot pin and a tubular bracing member received snugly thereon. The pivot pin acts in tension between opposed leg portions of fixed support while the bracing member acts in compression. A sealing pad or cap is disposed at each of the ends of the passageway in the caliper member through which the mounting assembly extends for providing fluid tightness thereat.
摘要:
A brake for vehicles comprises a brake drum rotating with a wheel, an inner pin fixed to a vehicle body within the brake drum, an inner shoe whose end is pivotally supported by the pin, an arm formed integrally with the inner shoe and extending outwardly beyond the brake drum, an outer pin extending from the end of the arm, an outer shoe pivotally supported by the outer pin and adapted to be in contact with the outer periphery of the brake drum, and actuating means for urging the inner and outer shoes toward and away from the brake drum, whereby a braking force acting upon on one shoe helps the braking action of the other shoe to provide a sufficient braking force by a slight brake operating force.