NZ718734B2 - Depth adjustment device for a plough skimmer - Google Patents

Depth adjustment device for a plough skimmer Download PDF

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Publication number
NZ718734B2
NZ718734B2 NZ718734A NZ71873414A NZ718734B2 NZ 718734 B2 NZ718734 B2 NZ 718734B2 NZ 718734 A NZ718734 A NZ 718734A NZ 71873414 A NZ71873414 A NZ 71873414A NZ 718734 B2 NZ718734 B2 NZ 718734B2
Authority
NZ
New Zealand
Prior art keywords
plough
shank
skimmer
actuator
arm
Prior art date
Application number
NZ718734A
Other versions
NZ718734A (en
Inventor
Svein Sigmundstad
Original Assignee
Kverneland Group Operations Norway As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from NO20131387A external-priority patent/NO336572B1/en
Application filed by Kverneland Group Operations Norway As filed Critical Kverneland Group Operations Norway As
Publication of NZ718734A publication Critical patent/NZ718734A/en
Publication of NZ718734B2 publication Critical patent/NZ718734B2/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B17/00—Ploughs with special additional arrangements, e.g. means for putting manure under the soil, clod-crushers ; Means for breaking the subsoil
    • A01B17/002—Means for putting manure, debris, straw or the like under the soil
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B3/00—Ploughs with fixed plough-shares
    • A01B3/36—Ploughs mounted on tractors
    • A01B3/40—Alternating ploughs
    • A01B3/42—Turn-wrest ploughs
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A01B63/111—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements

Abstract

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'). 22) 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').

Description

DEPTH ADJUSTMENT DEVICE FOR A PLOUGH SKIMMER 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.
It is known to use a so-called plough skimmer in front of every plough body in a plough for soil preparation. The purpose of the plough skimmer is primarily to cut off a border portion of the edge of each furrow slice before it is turned over so that the ploughing gets a more even surface and the furrow slices are closed. Thereby there will be, among other things, reduced ilities for plants to grow up from the downward-facing slice surface, which, in meadow-ploughing, is densely studded with old plant material. There is a need to be able to adjust the depth of each plough r in order to adapt the vertical on of the plough bodies to the ploughing depth of the plough. With today's technology, this is done individually on the plough skimmers one by one, the plough-skimmer shank which extends up from the plough r to an attachment on a plough beam being attached by means of a bracket, by loosening at least two screws, a clamping screw that presses the bracket together around the shank and a oning screw that is threaded in the t and enters one of a series of es regularly spaced in a side surface of the shank to provide a secure position before the shank is clamped with the bracket. The drawback of this and similar arrangements is that it is laborious and time-consuming to adjust the depth of the plough skimmers, especially in a reversible plough with two plough skimmers on each plough beam.
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 h features, which are specified in the description below and in the claims that follow.
PCT/N02014/050191 A device for the depth adjustment of a plough skimmer on a plough has been provid- ed, 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 t and is connected to an end portion of a shank ex- tending 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 ement including a central adjustment bracket displaceable substantially transversely to the longitudinal direction of the shank, along a horizontal portion of the plough beam. The displace- ment of the adjustment bracket is brought about with a ed 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 n of a link arm is pivotally attached to the ad- justment t. 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 ar- ent 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 ad— justment 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 or is formed as a ble 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 , is rotated, the shank is displaced in its udinal 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 in- creased or d distance from the centre of on of the rotatable disc.
The rotatable disc may be provided with a locking bolt, which, when tightened, pre— vents the ble 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 WO 57080 PCT/N02014/050191 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 r. 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 skim- mer is adjustably attached in a guide arrangement in a mounting bracket arranged on the plough, characterized by an actuator ed on the mounting bracket including means that are arranged to move the plough skimmer substantially in a vertical direc— tion, are fixed to the mounting bracket and are connected to an end n of the shank extending from the plough skimmer into the guide arrangement.
The mounting bracket may e 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 Iockingly 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 hori- zontally ceable 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 hori— zontally 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 con- nected 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 ng bracket may include two guide sleeves for attaching a shank each, wherein the link-arm arrangement is provid- ed with two link arms, each connected to a shank.
Alternatively, the plough may be a ible plough, and the mounting bracket may e two guide sleeves for attaching a shank each, wherein the rotatable disc is ed with two spiral slots, each connected to a shank.
PCT/N02014/050191 In what follows, an example of a preferred embodiment is described, which is visual- ized in the accompanying gs, in which: Figure 1 shows, in perspective, a reversible plough provided with plough skim- mers in front of a portion of all the plough bodies of the plough; Figure 2 shows, in detail and on a larger scale, a first embodiment of an or, in which the link-arm arrangement according to the invention is used on a reversible plough for the simultaneous adjustment of two opposite plough rs, and in which a stone-release spring has been re- moved for the sake of tion; Figure 3 shows in detail a second embodiment of an actuator, in which the link- arm arrangement according to the invention is used on a reversible plough for the simultaneous adjustment of two opposite plough skim- mers; Figure 3a shows the actuator according to figure 3 provided with a motor; and Figure 4 shows in detail a third embodiment of the or, in which a rotatable disc according to the invention is used on a reversible plough for the simultaneous adjustment of two opposite plough Skimmers.
Reference is first made to figure 1, in which a plough 1 is shown as a four—furrow re- versible plough 1a, provided with plough bodies 10, 10‘ arranged in pairs on respec- tive plough beams 11, and in which, in front of each plough body, a plough skimmer 13, 13' is attached to a horizontal n of the plough beam 11 by means of a mounting bracket 12.
Reference is now made to figure 2, in which a section of a reversible plough 1a is shown. An or 122 is shown in a first exemplary embodiment as a link-arm ar- rangement 122'. A central arm 1221', which is lly supported in a mounting bracket 12 around the centre of the central arm 1221', and an upper end n 1311 (see figure 3) of a shank 131, 131' of the plough skimmer 13, 13' are connected via link arms 1224 attached by pivotjoints 1315.
In the embodiment shown according to figure 2, a guide arrangement 121 is formed as a guide sleeve 1211. The guide sleeve 1211 is provided with locking bolts 123, which are arranged to engage with one of several recesses 1313 that are arranged in a side surface 1312 of the shank 131, 131' of the plough skimmer 13, 13'.
PCT/N02014/050191 Reference is now made to figure 3, in which a n of a reversible plough 1a is shown. An actuator 122 is shown in a second exemplary ment as a link-arm arrangement 122'. A threaded rod 1222, for example in the form of a hexagon screw or a hexagonal socket head cap screw, extends between two lugs 12' projecting from the mounting bracket 12 and through a threaded connecting portion 1223 of the ad- justment bracket 1221. The ment bracket 1221 and an upper end portion 1311 of the shank 131, 131' of the plough skimmer 13, 13' are connected via link arms 1224 ed by pivot joints 1315.
In the ment shown according to figures 3 and 4, a guide arrangement 121, 121' is formed as a combination of a guide sleeve 121 and several slip-in guides 1212.
For the sake of exposition, the covering guide sleeve 1211 is shown only in the upper guide arrangement 121'. The guide sleeve 1211 is provided with a locking bolt 123, which is arranged to engage with one of several recesses 1313 that are arranged in a side surface 1312 of the shank 131, 131‘ of the plough skimmer 13, 13'.
A variant of the second exemplary embodiment is provided with a motor 14 arranged to rotate the threaded rod 1222, see figure 3a.
Reference is now made to figure 4, in which a third exemplary embodiment of the ac- tuator 122 is shown. A rotatable disc 122", which is supported in the mounting bracket 12 on a locking bolt 1228 is provided with a spiral slot 1226. The rotatable disc 122" is arranged in a forked end portion 1311' of the shank 131, 131', and a guide bolt 1314 s through the end portion 1311' and through the slot 1226.
The rotatable disc 122" and the locking bolt 1228 are each provided with a handle 1227, 1229 for ing the rotatable disc 122" and the g bolt 1228, respective- 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 re- versible plough 1a, two sets of means are used for the displacement of the plough skimmers 13, 13'.
PCT/N02014/050191

Claims (30)

  1. Claims
  2. A device for the depth adjustment of a plough skimmer (13, 13') of a plough
  3. (1, 1a), in which a shank (131, 131') that extends up from the plough
  4. skimmer (13, 13') is adjustably attached to a guide arrangement (121, 121')
  5. in a mounting bracket (12) arranged on the plough (1, 1a), c h a r a c -
  6. t e r i z e cl i n that an actuator(122) arranged on the mounting
  7. bracket (12) includes means (122') that are arranged to move the plough
  8. r (13) ntially in a vertical direction, are attached to the mount-
  9. ing bracket (12) and are connected to an end portion (1311, 1311') of the
  10. shank (131, 131') extending up from the plough skimmer (13, 13') into the
  11. guide arrangement (121, 121').
  12. The device according to claim 1, wherein the mounting bracket (12) includes
  13. a locking bolt (123) arranged to apply a clamping force, directed towards the
  14. guide sleeve (121, 121'), to the shank (131, 131‘).
  15. 15 The device according to claim 1, wherein the mounting t (12) includes
  16. at least one locking bolt (123) arranged to be able to lockingly engage with
  17. one of several es (1313) preferably regularly spaced in a side Surface
  18. (1312) of the shank (131, 131‘).
  19. The device according to claim 1, wherein the actuator (122) is formed as a
  20. 20 link-arm arrangement (122') ing a l arm (1221') l around
  21. a centre axis connected to the end portion (1311) of the shank (131, 131')
  22. via a link arm (1224).
  23. The device according to claim 1, wherein the actuator (122) is formed as a
  24. link-arm arrangement (122') including a substantially ntally displacea-
  25. 25 ble adjustment bracket (1221) connected to the end portion (1311) of the
  26. shank (131, 131‘) via a link arm .
  27. The device according to claim 1, n the actuator (122) is formed as a
  28. link-arm arrangement (122') including a substantially horizontally movable
  29. adjustment bracket (1221) connected to the end portion (1311) of the shank
  30. 30 (131, 131') via a link arm (1224), and wherein the adjustment bracket
    (1221) is supported on a threaded rod (1222).
    The device according to claim 1, wherein the actuator (122) is formed as a
    rotatable disc (122") including at least one spiral slot (1226) connected to
    PCT/N
NZ718734A 2013-10-18 2014-10-09 Depth adjustment device for a plough skimmer NZ718734B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO20131387A NO336572B1 (en) 2013-10-18 2013-10-18 Device for depth adjustment of plow
NO20131387 2013-10-18
PCT/NO2014/050191 WO2015057080A1 (en) 2013-10-18 2014-10-09 Depth adjustment device for a plough skimmer

Publications (2)

Publication Number Publication Date
NZ718734A NZ718734A (en) 2020-11-27
NZ718734B2 true NZ718734B2 (en) 2021-03-02

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