摘要:
A steering unit for conveying devices on wheels such as beds, stretchers or trolleys includes a wheel unit and a motor unit. The wheel unit includes a base structure and a wheel mounted on a supporting element to rotate about an axis. The supporting element is mounted on the base structure to rotate about an orientation axis. A transmission includes an inlet unit and outlet shaft. The inlet unit includes an engagement device to reversibly engage the inlet unit on a transmission unit of the motor unit. The outlet shaft is integral with the supporting element and defines the orientation axis. The transmission transforms an inlet motion of the inlet unit into an outlet rotation of the outlet shaft about the orientation axis. A motor includes a complementary engagement device operating with the engagement device for reversibly engaging the inlet unit on the transmission unit.
摘要:
Variable configuration vehicle comprising a chassis having a front axle (2) provided at opposed ends of a pair of wheels (21,22) and a rear axle (3) also provided with a conventional pair of wheels (31,32) joined to each other by a plurality of substantially longitudinal side members. Each axle is equipped with a telescopic shaft which allows each axle to go from a closed position having a predetermined width to an open position having a width considerably greater than the width in closed position.
摘要:
A catering cart that includes a brake arrangement and has a height which is substantially greater than its width and length, particularly a catering cart for use in confined spaces, such as the aisles of passenger aircraft and railway diners, wherein the cart is adapted for connection to another similar cart and is provided with four wheels, of which at least two (5) can be locked with the aid of a toothed rack (50) that can be swung into engagement with a toothed wheel (51) fixedly mounted on a respective wheel (5) and which is manoeuvrable with the aid of a pedal (43) located on the serving side (2) of the cart, through the medium of a brake rod. The catering cart is characterized by at least one coupling element (57) mounted on the side (3) of the cart opposite to the serving side (2) thereof, wherein the coupling element is rotatable in a vertical plane and includes an outwardly directed cam (58) and a groove (59), an operating rod (60) carrying the coupling element (57) and connected to the pedal (43), and wherein the operating rod (60), and therewith the coupling element (57), is rotated through about 90° when actuating the cart braking arrangement.
摘要:
Die Erfindung betrifft eine Lenk- oder Bockrolle zum Bremsen eines Rades (2) mit einem Bremsbacken, der an eine Umfangsfläche des Rades mittels eines Betätigungselementes angesetzt und gegen die Umfangsfläche mit vorbestimmter Kraft beaufschlagt werden kann. Der Bremsbacken ist entlang der Umfangsfläche des Rades (2) verschiebbar gelagert ist, so daß er bei einer Drehbewegung des Rades mitgenommen wird und sich zwischen dem Rad (2) und dem Betätigungselement (12) verkeilt, wodurch das von dem Bremsbacken (17,18) auf die Rolle ausgeübte Bremsmoment erhöht wird. Die erfindungsgemäße Lenk- oder Bockrolle zeichnet sich durch ein großes Bremsmoment bei geringer Betätigungskraft und durch einen einfachen Aufbau aus. Die Lenk- oder Bockrolle ist wegen ihres einfachen und kompakten Aufbau besonders für Bockrollen geeignet.
摘要:
A retractable caster assembly (2) incorporating a strut lock formed of a sleeve (52) mounted on the strut for sliding movement thereon, between closed position removed from the pivot axis and not interfering with the folding of the strut, and operative position seated over the pivot axis to hold the strut members in aligned, operative position and prevent their pivoting with respect to each other. Sleeve control means are mechanically associated with the sleeve automatically to move the sleeve to closed position when the wheel (22) is being retracted and to operative position when the wheel is moved to operative position.
摘要:
La roulette comporte une chape avec deux ailes (1A, 1B) supportant un axe de rotation (6) autour duquel sont montés deux flasques 8A, 8B qui sont libres en rotation et distants l'un de l'autre de manière à pouvoir s'engager dans les rainures de la surface du trottoir et un moyen de freinage (20) disposé en retrait entre les deux flasques et autorisant leur rotation, le moyen de freinage (20) étant apte à venir au contact des nervures de la surface lorsque les deux flasques (8A, 8B) sont engagés dans les rainures de celle-ci. Selon l'invention le moyen de freinage est constitué par un organe intermédiaire (20) monté libre en rotation autour de l'axe 6 et comportant un embout (24) apte à venir buter contre un élément fixe du chariot (1).
摘要:
The brake for twin wheels cantilevered rotatably on a support member (3) comprises a forked support member (6), a pedal (10) with an operating portion (12) projecting from the support (6) and a cam-shaped drive portion (14) located within the support (6), the pedal (10) being pivotable between a rest position and an operative position, and a coaster brake (16) articulated to the support (6), pivotable by the cam portion (14) of the pedal (10) as a result of the pivoting thereof, and having a portion (20) which is arranged to interfere with the wheels (4) as a result of its pivoting in order to stop the wheels (4). The brake also includes a resilient element (22) which, in the rest position, keeps the coaster brake (16) spaced from the wheels (4), and a small pedal (26) which, in the rest position, is inserted in a seat (24) within the support (6) and which has an operating portion (27) and a slot (28) in which the hook-shaped end (30) of the control portion (14) of the pedal (10) is inserted. The operation of the pedal (10) causes the removal of the small pedal (26) from its seat (24), whilst the operation of the operating portion (27) of the small pedal (26) causes the reinsertion of the small pedal (26) in its seat (24) and the pivoting of the pedal (10) into its rest position, with the consequent release of the coaster brake (16) from the wheels (4).