Suspension unit for agricultural implement, agricultural implement, method of manufacturing a suspension unit and use of a bearing unit

摘要

A suspension unit for an agricultural implement, the suspension unit includes a bearing unit. The bearing unit contains an inner sleeve and an outer sleeve which is rotatable relative to said inner sleeve, and a friction-reducing member arranged between the inner sleeve and the outer sleeve. The suspension unit further includes a spring element, arranged radially outside the outer sleeve, and a holder which forms a spring chamber in which the spring element is accommodated. The spring element is fixed in the spring chamber between a circumferential, radially outwardly open groove, which is integrated with the outer sleeve, and a radially inwardly open groove, which surrounds the outer sleeve.

主权项

1. An agricultural implement comprising a suspension unit, which suspension unit is arranged for cushioning between a rotatable soil engaging or tilling part and a frame of the agricultural implement, comprising:
a bearing unit comprising: an inner sleeve and an outer sleeve which is rotatable relative to said inner sleeve, and a friction-reducing member arranged between the inner sleeve and the outer sleeve; a spring element, arranged radially outside the outer sleeve; and a holder which forms a spring chamber in which the spring element is accommodated, wherein the spring element is fixed in the spring chamber between a circumferential, radially outwardly open groove, which is integrated with the outer sleeve, and a radially inwardly open groove, which surrounds the outer sleeve, wherein the holder comprises first and second holder parts, which in a joined-together state form the spring chamber, the holder parts are joined together along a plane which is substantially perpendicular to a rotational axis of the bearing unit, at least one of the holder parts has a substantially flat portion and a, relative to the flat portion, countersunk portion, which forms a part of the spring chamber, wherein the holder parts are configured as a pair of mirror-inverted parts, or as a pair of identical parts, or wherein the holder parts are configured as a first substantially flat part and a second part having the flat portion and the countersunk portion, wherein the countersunk portion defines a whole of the spring chamber for the spring element, and wherein at least one of the holder parts is formed by a predefined cut to size and shape of a flat metal blank.