摘要:
A lockable articulation for permitting relative angular rotation between a first and a second part, such for example as the body of a three-wheeled vehicle and the rear axle of the vehicle, said articulation comprising a hollow cylindrical drum centered and mounted on one part, e.g. the axle, two cylindrical sector-shaped jaws arranged inside the drum for contacting the inner surface of the drum and with their ends facing each other, at least two facing ends defining dihedral surfaces whose angle is outwardly opening, and means coupled to the other part, e.g. the vehicle body, for spreading the jaws apart into frictional engagement with the drum to lock the other part against rotation relative to the one part, said means including a roller interposed between the drum wall and the dihedral surface of the jaws and a knee lever having two-pivotally connected links one of which is pivotted on the other part and the other of which rotatably supports the roller.
摘要:
This disclosure includes anti-reverse rotation apparatuses, rotors for use therein, and related methods. Some apparatuses include a stator defining an interior volume and one or more arcuate contact surfaces within the interior volume, and a rotor rotatably coupled to the stator and at least partially disposed within the interior volume, the rotor having a hub, two or more shoes, each pivotally coupled to the hub and extending between a first end and a second end that is farther from the hub than is the first end, wherein each of the shoes is rotatable relative to the hub between: (a) a first position in which the second end of the shoe contacts at least one of the arcuate contact surface(s) of the stator; and (b) a second position in which the second end of the shoe does not contact the arcuate contact surface(s) of the stator.
摘要:
The invention relates to a drum brake, in particular for commercial vehicles, comprising a first brake shoe and a second brake shoe, wherein the first brake shoe is arranged as a leading brake shoe in the drum brake, wherein the second brake shoe is arranged as a trailing brake shoe in the drum brake, wherein at least one leading lining element can be fixed on the first brake shoe, and at least one trailing lining element can be fixed on the second brake shoe, wherein the number of leading lining elements fixed on the first brake shoe is greater than the number of trailing lining elements fixed on the second brake shoe.
摘要:
An elevator installation has braking equipment for braking and holding an elevator car which moves in vertical direction within guide tracks or rails. The braking equipment consists of at least two brake units each comprising a normal force regulation device that sets a normal force (FN) in correspondence with a normal force value determined by a brake control unit and/or a locking device that locks the brake unit in a set braking position and which preferably maintains the set braking position in the case of an interrupted energy supply. The braking equipment provides a gentle braking or holding of the elevator car, which corresponds with the operational state of the elevator installation, with a low energy requirement.
摘要:
A cabinet for reducing the G-loading upon a delicate instrument produced by shock and vibratory forces. The cabinet includes an inner frame and an outer frame that are co-joined by a series of horizontal isolators and double acting isolator or shock absorber assemblies.
摘要:
A wheel brake, particularly an overrunning wheel brake comprising a brake drum, first and second brake shoes movable in forward and rearward directions, amplifying formations arranged to cooperate with the first brake shoe and to amplify a force with which the first brake shoe is pressed against the brake drum, a displacing element for displacing the first brake shoe in the forward direction and thereby pressing the same against the brake drum with amplified pressure force, and an urging projection provided on the first brake shoe and arranged so that when the first brake shoe is displaced in the rearward direction, the projection displaces the second brake shoe which acts upon the amplifying formations and thereby the first brake shoe is again pressed against the brake drum with the amplified pressure force.
摘要:
An anchor piston for a wedge brake includes a cylinder having a closed end engaging the wedge actuator and an opposite open end. An insert is slidably received in the cylinder and includes a portion projecting from the cylinder and having a slot formed therein which is adapted to receive one end of a brakeshoe. The portion of the insert which is disposed in the cylinder is provided with an axially extending surface having a pair of opposed end portions adjacent the wall of the cylinder. A pin projects from the wall of the cylinder and engages one of the opposed end portions to properly position the slot to receive the brakeshoe. By rotating the insert so that the pin engages the other one of the opposed end portions, the piston may be used in the brake mounted on the other side of the vehicle.