DEPTH ADJUSTMENT DEVICE FOR A PLOUGH SKIMMER |
|||||||
申请号 | EP14854453.9 | 申请日 | 2014-10-09 | 公开(公告)号 | EP3057393B1 | 公开(公告)日 | 2018-03-07 |
申请人 | Kverneland Group Operations Norway AS; | 发明人 | SIGMUNDSTAD, Svein; | ||||
摘要 | A device for the depth adjustment of a plough skimmer (13, 13') on a plough (1, 1a), in which a shank (131, 131') extending up from the plough skimmer (13, 13') is adjustably attached to a guide arrangement (121, 121') in a mounting bracket (12) arranged on the plough (1, 1a), wherein an actuator (122) which is arranged on the mounting bracket (12) includes means (122') that are arranged to move the plough skimmer (13) substantially in a vertical direction, are attached to the mounting bracket (12) and are connected to an edge portion (1311, 1311') of the shank (131, 131') extending up from the plough skimmer (13, 13') into the guide arrangement (121, 121'). | ||||||
权利要求 | |||||||
说明书全文 | The invention relates to a device for the depth adjustment of a plough skimmer in a plough, in which a shank that extends up from the plough skimmer is adjustably attached in a guide arrangement in a mounting bracket arranged on the plough. From The invention has for its object to remedy or reduce at least one of the drawbacks of the prior art or at least provide a useful alternative to the prior art. The object is achieved through features, which are specified in the description below and in the claims that follow. A device for the depth adjustment of a plough skimmer on a plough has been provided, in which a mounting bracket for the plough skimmer is provided with means for fixing the plough skimmer in a preferred position on a plough beam. An actuator is attached to the mounting bracket and is connected to an end portion of a shank extending up from the plough skimmer into a guide arrangement on the mounting bracket. In a lower portion of the guide arrangement, an adjusting screw is preferably arranged, which, when the plough skimmer is in a preferred position, extends into one of the many recesses regularly spaced in the side surface of the shank. In a first embodiment, the actuator is formed as a link-arm arrangement including a central adjustment bracket displaceable substantially transversely to the longitudinal direction of the shank, along a horizontal portion of the plough beam. The displacement of the adjustment bracket is brought about with a threaded rod that is rotated manually by means of a spanner engaging with an end portion of the threaded rod, or by means of a motor. A first end portion of a link arm is pivotally attached to the adjustment bracket. A second end portion of the outer arm is pivotally attached to an end portion of the shank that extends up from the plough skimmer into the guide arrangement in the mounting bracket. When the adjusting screw has been screwed out of the recess, the depth position of the plough skimmer can be changed by the adjustment bracket being displaced. The displacement moves the end portions of the link arm and pulls or pushes the shank of the plough skimmer up or down in the mounting bracket. In a second embodiment, the actuator is formed as a rotatable disc, wherein an upper forked end portion of the shank is in engagement with a spiral slot in the rotatable disc. When the rotatable disc, which is provided with a handle, is rotated, the shank is displaced in its longitudinal direction, as a guide bolt, which forms the engagement of the shank with the slot of the rotatable disc, follows the spiral of the slot to an increased or reduced distance from the centre of rotation of the rotatable disc. The rotatable disc may be provided with a locking bolt, which, when tightened, prevents the rotatable disc from moving. The locking bolt is preferably provided with a handle. On a reversible plough, two opposite plough skimmers are attached to one and the same mounting bracket, and the actuator is connected to an outer portion of each of the shanks. On a reversible plough, the beneficial effect of the two opposite plough skimmers straining the actuator in opposite directions is achieved; that is to say, when the downward-facing plough skimmer is to be lowered, the downward force provided by the weight of the lower plough skimmer is balanced with the power of the upward force that must be provided to lift the upward plough skimmer. In a reversible plough, it is, to a great degree, only the frictional forces that are to be overcome with the use of the present invention. The invention relates, more specifically, to a device for the depth adjustment of a plough skimmer on a plough, in which a shank that extends up from the plough skimmer is adjustably attached in a guide arrangement in a mounting bracket arranged on the plough, characterized by an actuator arranged on the mounting bracket including means that are arranged to move the plough skimmer substantially in a vertical direction, are fixed to the mounting bracket and are connected to an end portion of the shank extending from the plough skimmer into the guide arrangement. The mounting bracket may include a locking bolt arranged to be able to apply a clamping force, directed towards the guide sleeve, to the shank. The mounting bracket may include a locking bolt arranged to lockingly engage with one or more recesses preferably regularly spaced in a side surface of the shank. The actuator may be formed as a link-arm arrangement including a substantially horizontally displaceable adjustment bracket connected to the end portion of the shank via a link arm. The actuator may be formed as a link-arm arrangement including a substantially horizontally displaceable adjustment bracket connected to the end portion of the shank via a link arm, the adjustment bracket being supported on a threaded rod. The actuator may be formed as a rotatable disc including at least one spiral slot connected to the end portion of the shank via a guide bolt that extends through a forked end portion of the shank and through a portion of the slot. The actuator may be connected to a motor. The plough may be a reversible plough, and the mounting bracket may include two guide sleeves for attaching a shank each, wherein the link-arm arrangement is provided with two link arms, each connected to a shank. Alternatively, the plough may be a reversible plough, and the mounting bracket may include two guide sleeves for attaching a shank each, wherein the rotatable disc is provided with two spiral slots, each connected to a shank. In what follows, an example of a preferred embodiment is described, which is visualized in the accompanying drawings, in which:
Reference is first made to Reference is now made to In the embodiment shown according to Reference is now made to In the embodiment shown according to A variant of the second exemplary embodiment is provided with a motor 14 arranged to rotate the threaded rod 1222, see Reference is now made to The rotatable disc 122" and the locking bolt 1228 are each provided with a handle 1227, 1229 for adjusting the rotatable disc 122" and the locking bolt 1228, respectively. When the actuator 122 is operated while the shanks 131, 131' are loose in the guide sleeve 1211, that is to say the locking bolts 123 are not in engagement with recesses 1313 in the shanks 131, 131', the plough skimmers 13, 13' are displaced substantially vertically relative to the corresponding plough body 10, 10'. On a conventional plough (not shown), that is to say a plough with one set of plough bodies 10, the actuator is provided with one set of means, that is to say one link arm 1224 or one spiral slot 1226, for displacing the plough skimmer 13, whereas in a reversible plough 1a, two sets of means are used for the displacement of the plough skimmers 13, 13'. |