초록 ▼

A coupling device for a handling trolley comprises a drawbar (22) arranged at the front of the trolley and designed to co-operate with the hook (24) provided at the back of a tractor, in particular a trolley preceding a line of trolleys. The drawbar (22) comprises a longitudinal slot (36) wherein th

A coupling device for a handling trolley comprises a drawbar (22) arranged at the front of the trolley and designed to co-operate with the hook (24) provided at the back of a tractor, in particular a trolley preceding a line of trolleys. The drawbar (22) comprises a longitudinal slot (36) wherein the hook (24) is designed to slide such that the hook can slide in the longitudinal slot between a position spaced apart wherein the trolley (10) is at a maximum distance from the tractor while it is being towed and a closer position wherein the trolley is at a minimum distance from the tractor to reduce the space requirement when it is stopped.

대표청구항 ▼

1. Coupling device for a handling trolley, comprising a drawbar (22) mounted at the front of the trolley and designed to co-operate with a hook (24) mounted at the rear of a towing unit, such that two such equipped trolleys may be used together, wherein the drawbar (22) of one coupling device has a

1. Coupling device for a handling trolley, comprising a drawbar (22) mounted at the front of the trolley and designed to co-operate with a hook (24) mounted at the rear of a towing unit, such that two such equipped trolleys may be used together, wherein the drawbar (22) of one coupling device has a longitudinal slot (36) in which the hook (24) of another coupling device is able to slide so that the said hook can slide in the said longitudinal slot such that the two trolleys may be connected together by the drawbar of one trolley's coupling device and the hook of a second trolley's coupling device, wherein the drawbar (22) is connected to the front of the trolley by articulation means (30, 32) defining an articulation axis (XX) in such a way as to pivot between a coupling position, in which the drawbar extends substantially horizontally in order to co-operate with the hook, and a lifted position, in which the drawbar is in a raised position and is disengaged from the hook.2. Coupling device according to claim 1, wherein the drawbar (22) forms an acute angle (α) relative to the vertical in the raised position.3. Coupling device according to claim 2, wherein the acute angle (α) is about 10°.4. Coupling device according to claim 1, wherein the drawbar (22) is likewise designed to pivot beyond the raised position towards an upright position, in which it extends substantially vertically under the action of towing unit, being disengaged from the hook of the latter.5. Coupling device according to claim 1, wherein the articulation means (30, 32) extend along a substantially horizontal transverse axis (XX).6. Coupling device according to claim 1, wherein the hook extends downward and further comprising an elastic return means (40) designed to urge the drawbar (22) towards its lifted position, and a support (48) for the downward extending hook provided under the towing unit in such a way that the drawbar is brought back elastically to bear on the support in order to ensure that the drawbar (22) and the hook (24) co-operate automatically.7. Coupling device according to claim 6, wherein the elastic return means (40) is mounted at an anchoring point placed between the chassis (12) of the trolley and the drawbar (22).8. Coupling device for a handling trolley, comprising a drawbar (22) mounted at the front of the trolley and designed to co-operate with a hook (24) mounted at the rear of a towing unit, such that two such equipped trolleys may be used together, wherein:the drawbar (22) of one coupling device has a longitudinal slot (36) in which the hook (24) of another coupling device is able to slide so that the said hook can slide in the said longitudinal slot and the trolley can be such that the two trolleys are connected together by the drawbar of one trolley's coupling device and the hook of a second trolley's coupling device; and, wherein the drawbar (22) is connected to the front of the trolley by articulation means (30, 32) defining an articulation axis (XX) in such a way as to pivot between a coupling position, in which the drawbar extends substantially horizontally in order to co-operate with a hook, and a lifted position, in which the drawbar is in raised position and is disengaged from the hook, and wherein the hook extends downward; further comprising an elastic return means (40) mounted at anchoring points, the elastic return means (40) operate in tension and are interposed between a first anchoring point (42) of the chassis of the trolley and a second anchoring point (38) situated opposite the drawbar in relation to it articulation axis (XX), thereby designed to urge the drawbar (22) towards it lifted position, and a support (48) for the downward extending hook positioned provided under the towing unit in such a way that the drawbar is brought back elastically to bear on the support in order to ensure that the drawbar (22) and the hook (24) co-operate automatically. 9. Coupling device according to claim 8, wherein the second anchoring point (38) is situated on an angled extension (34) provided opposite the drawbar (22) in relation to the articulation axis (XX) and is arranged in such a way, in the lifted position of the drawbar, the articulation axis (XX) of the drawbar (22), the second anchoring point (38) and the first anchoring point (42) are in the same plane.