Abrégé

A vacuum tube lifting device includes a lifting hose having a first end for attaching the hose and a second end for connecting elements disposed to couple the hose to a load, the hose being for connectable to an adjustable vacuum source and a control unit disposed to adjust the pressure inside the hose via input signals for achieving an extending or contracting shifting movement of the hose for shifting of a load. The device includes an arrangement for measuring a parameter proportional to the momentary length of the hose or proportional to a change in the momentary length of the hose, and to emit to the control unit at least a first signal, used by the control unit to obtain an actual value, and to automatically adjust the vacuum source for adjusting the length of the hose to a desired target value starting out from the actual value.

Classes IPC  ?

• G06F 7/00 - Procédés ou dispositions pour le traitement de données en agissant sur l'ordre ou le contenu des données maniées
• G05B 21/00 - Systèmes impliquant l'échantillonnage de la variable commandée
• B66C 1/02 - Éléments ou dispositifs de prise de la charge adjoints aux mécanismes de levage, de descente ou de halage, ou adaptés pour être utilisés avec ces mécanismes et transmettant les efforts à des articles ou à des groupes d'articles par succion
• B25J 15/06 - Têtes de préhension avec moyens de retenue magnétiques ou fonctionnant par succion
• F16L 11/00 - Manches, c.-à-d. tuyaux flexibles

Abrégé

The invention relates to a vacuum tube lifting device comprising a lifting hose (15), which lifting hose (15) has a first end (15a) for attachment of the lifting hose (15) and a second end (15b) for connection to a means (17, 18) disposed to couple the lifting hose (15) to a load (25), wherein the lifting hose (15) is adapted for connection to an adjustable vacuum source (11) and a control unit (13) disposed to adjust the pressure inside the lifting hose (15) by means of input signals for the purpose of achieving an extending or contracting shifting movement of the lifting hose (15) for shifting of a load (25). The device comprises an arrangement (26) disposed to measure in an ongoing manner a parameter proportional to the momentary length of the lifting hose (15) or a parameter proportional to a change in the momentary length of the lifting hose (15), and to emit to the control unit (13) at least a first signal, which is used by the control unit (13) to obtain an actual value, and that said control unit (13) is disposed to automatically adjust the vacuum source (11) for the purpose of adjusting the length of the lifting hose (15) to a desired target value starting out from said actual value. The invention relates to a device that facilitates automatic adjustment of the pressure in the lifting hose through a possibility of automatic adjustment of at least the vacuum source. The invention also relates to a lifting hose for, and a method for control of, such a vacuum tube lifting device.

Classes IPC  ?

• B66C 1/02 - Éléments ou dispositifs de prise de la charge adjoints aux mécanismes de levage, de descente ou de halage, ou adaptés pour être utilisés avec ces mécanismes et transmettant les efforts à des articles ou à des groupes d'articles par succion
• B66F 3/24 - Dispositifs, p. ex. crics, adaptés pour lever des charges d'un mouvement continu utilisant la pression d'un fluide