NZ721636B2 - Locking device for a wear part of a soil-working implement - Google Patents
Locking device for a wear part of a soil-working implement Download PDFInfo
- Publication number
- NZ721636B2 NZ721636B2 NZ721636A NZ72163615A NZ721636B2 NZ 721636 B2 NZ721636 B2 NZ 721636B2 NZ 721636 A NZ721636 A NZ 721636A NZ 72163615 A NZ72163615 A NZ 72163615A NZ 721636 B2 NZ721636 B2 NZ 721636B2
- Authority
- NZ
- New Zealand
- Prior art keywords
- working
- wearing part
- locking device
- soil
- engagement section
- Prior art date
Links
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000000875 corresponding Effects 0.000 description 4
- 230000001808 coupling Effects 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 240000002245 Acer pensylvanicum Species 0.000 description 2
- 235000006760 Acer pensylvanicum Nutrition 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000789 fastener Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000284 resting Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- A01B15/00—Elements, tools, or details of ploughs
- A01B15/02—Plough blades; Fixing the blades
- A01B15/04—Shares
- A01B15/06—Interchangeable or adjustable shares
-
- 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
- A01B23/00—Elements, tools, or details of harrows
- A01B23/02—Teeth; Fixing the teeth
-
- 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
- A01B35/00—Other machines for working soil not specially adapted for working soil on which crops are growing
- A01B35/20—Tools; Details
- A01B35/22—Non-rotating tools; Resilient or flexible mounting of rigid tools
- A01B35/225—Non-rotating tools; Resilient or flexible mounting of rigid tools the tools being adapted to allow the chisel point to be easily fitted or removed from the shank
Abstract
locking device (3) for a wearing part (2) detachably attached to a soil-working working element (1) by means of quick-coupling elements (11, 21), wherein a locking element (31) attached to the working element (1) includes an end portion (312) projecting from the working element (1) and being provided with an engagement section (313) arranged to engage with a lock-receiving element (22) arranged on a lee-side face (2a) of the wearing part (2). The lock receiving element (22) is a recess arranged in a bottom and rear side area (2a) of the wearing part (2) which is shielded relative to a material flow passing over the wearing part (2) when the soil-working element (1) is in use. the design provides the locking device with better protection against the flow of material during use. ded with an engagement section (313) arranged to engage with a lock-receiving element (22) arranged on a lee-side face (2a) of the wearing part (2). The lock receiving element (22) is a recess arranged in a bottom and rear side area (2a) of the wearing part (2) which is shielded relative to a material flow passing over the wearing part (2) when the soil-working element (1) is in use. the design provides the locking device with better protection against the flow of material during use.
Description
LOCKING DEVICE FOR A WEAR PART OF A SOIL-WORKING IMPLEMENT
The invention relates to a locking device for a wearing part, more specifically a wearing part that is
detachably attached to a orking working element by means of quick-coupling elements.
When using a g part which is attached to a soil-working working element with a quick cou-
pling, especially of the socket-and-pin coupling type, as is described in the applicant's own EP patent
1259105 and NO patent 332031, for example, incorrect use of the implement of which the
working element forms part may lead to the wearing part coming loose from the quick coupling.
ally when the g part is of the ator-tine type in the shape of a wide goosefoot
share, the loss of such a wearing part during transport-driving on roads may be a hazard to other
vehicles and may result in s damage if the wearing part of this kind is hit by a vehicle.
US4779686 A is disclosing a so-called ploughshare ly including a ploughshare and a support
for the ploughshare, the support extending from the top face of the ploughshare. A pair of opposed
internal edges defines a recess in the ploughshare. A holder ion on the support includes
a foot portion and a pair of grooves adjacent the foot to receive the internal edges of the
ploughshare so that when the ploughshare is in its working position on the support the foot engages
underside the ploughshare and retains it in place. A resilient latch in the form of a length of wire
bent to define a hook, and a rearwardly extending portion in the form of an eye is releasably
mounted to the support positionable to engage a detent face on the ploughshare to t excessive
d movement of the ploughshare with respect to the support.
The invention has for its object to remedy or reduce at least one of the drawbacks of the prior art or
at least e a useful alternative to the prior art.
The object is ed through the features that are ied in the description below and in the
claims that follow.
The terms "front", "rear", "upper", "lower" and the like relate to the direction of travel and the posi-
tions of the elements in a normal operative state of the ent.
The invention provides a locking device arranged on a working element for a soil-working implement
and arranged to engage with a portion of a wearing part, preferably by means of a ock
device in an area of the wearing part that lies shielded relative to the material flow created when
the implement is in function. In a preferred embodiment, the locking device formed as an elongated
resilient locking element which is attached at a first end portion to the working element and which,
in a freely projecting second end portion, includes an engagement section arranged to engage with
a lock-receiving element, for example a recess, on the wearing part. A front portion of the engagement
section preferably forms a ramp, that is to say an inclined plane, on which the wearing part
slides when the wearing part is being connected to a wearing-part holder, so that the front portion
of the locking element is deflected out of its ssed normal position until the wearing part has
been moved into its normal attached position on the wearing-part holder and the engagement section
of the locking element is in engagement with the corresponding side face of the eceiving
element of the wearing part. Similarly, a rear portion of the engagement section is preferably ramp-
shaped for the wearing part to be able to, when being detached, displace the second end portion of
the locking element away from its engagement with the lock-receiving element. Said rear portion of
the engagement section has a pitch angle relative to the direction of nt of the wearing part,
when this is being fitted and removed, that is so large that a considerable push force will have to be
applied to the wearing part for the locking device to be released from the wearing part.
The locking device is preferably formed from a plate material, wherein the engagement section
may have been formed by, for example, parts of the second end n of the locking device having
been bent, by part of the second end portion of the locking device having been pressed out by
cold or hot forming, or by an elevation element having been attached to the second end portion of
the g device by means of a fixing method suitable therefor ng, soldering, gluing, screw-
ing or the like).
The invention is defined by the independent claim. The dependent claims define advantageous
embodiments of the invention.
The invention relates, more specifically, to a locking device for a g part detachably attached
to a soil-working working element by means of quick-coupling elements, wherein a locking element
is fixed to the working element and includes a ent end portion, which projects from the working
element and is provided with an engagement n arranged to engage with a lock-receiving
element, terized in that said eceiving element is a recess ed in a bottom and
rear side area of the g part, said area being ed relative to a material flow passing over
the wearing part when the soil-working element is in function.
The end portion may be tensioned in the operative position of the engagement section. An advantage
of this is that the locking device may engage with the wearing part as a snap-lock device.
The lock-receiving element may be a recess arranged in the lee-side face of the wearing part,
where the recess may be formed as a bottom side of a transverse ion on the top side of the
wearing part, arranged for shielding a g-part mounting. An advantage of this is that the lock-
receiving element is formed in the same operation that forms another function element on the
wearing part.
The engagement section may include a front portion formed as a ramp arranged for sliding contact
with a portion of the lee-side face of the wearing part when the wearing part is being connected to a
wearing-part mounting arranged on the working element.
The engagement section may include a rear portion formed as a ramp arranged for sliding t
with a portion of the de face of the g part when the wearing part is being disconnected
from a wearing-part mounting arranged on the g t. An advantage of this is that the
wearing part can be detached without the locking device first having to be deactivated.
The locking element may be formed from a springy plate material. An advantage of this is that the
locking device may be produced rationally.
The ment section may be formed as a bent portion of a plate material. An age of this
is that the locking device may be formed of just one component.
In what follows, an example of a preferred embodiment is described, which is visualized in the ac-
companying drawings, in which:
Figure 1 shows a view of a portion of a working element viewed in the g direction of
the working element, a g device according to the invention being in engagement
with the bottom side of a wearing part;
Figure 2 shows a longitudinal section I-I according to figure 1 of the working element with
the locking device in engagement with the wearing part;
Figure 3 shows a longitudinal section I-I according to figure 1 of the working element with
the locking device, but in which, for the sake of exposition, the wearing part has
been pulled away from the working element; and
Figure 4 shows, in perspective, a portion of the working element with the locking device in
engagement with the wearing point, viewed from underneath the working element.
In the figures, the reference numeral 1 indicates a working element, shown here as a lower portion
of a cultivator tine for working the soil. A wearing part 2, shown here as a cultivator point, also
called a goosefoot share, is releasably attached to the working element 1. The wearing part 2 includes
a quick-coupling element 21 formed as a socket arranged to slidingly engage with a corre-
sponding pin of a quick-coupling element 11, also called a wearing part mounting, which is fixed to
the working element 1. A g device 3, which is fixed to the working element 1 projects forwards
along a lee-side face 2a of the g part 2, that is to say along a bottom side and a rear
side of the wearing part 2 where the locking device 3 lies shielded to a ntial degree from the
mass flow passing over the wearing part 2 when the working element 1 is in function.
On its lee-side face 2a, the wearing part 2 includes a eceiving element 22 shown here as a
recess which is formed, here, by shaping a transverse elevation 23 on the top side of the wearing
part 2 arranged to shield the wearing-part mounting 11. The lock-receiving element 22 may be
ed by machining, cold or warm forming or the like, and is necessarily not connected to the
presence of said elevation 23. The lock-receiving element 22 may also be formed as an elevation,
not shown, projecting from the lee-side face 2a.
Reference is now made especially to figures 2 and 3, in which a longitudinal section through the
working element 1 elucidates the invention in its simplest embodiment. The locking device 3 is
formed of a locking element 31 formed from a plate material which is fixed in a first, rear end portion
311 to a fixing bolt 24 which, together with a second fixing bolt 25, constitutes fixing means for
the wearing-part mounting 11. A second, front end portion 312 of the locking element 31 projects
freely forwards from the g-part mounting 11 and includes a raised engagement section 313
arranged to engage in a locking manner in the lock-receiving element 22 of the wearing part 2. The
engagement section 313 includes front and rear ramp-shaped portions 3131, 3132, that is to say
having the shape of inclined planes. In the embodiment shown, the engagement section 313 is
formed by bending the plate material from which the locking element 31 is , but the ion
is not limited to an engagement section 313 formed in this way. The engagement section 313 may
be formed as a pressed-out or forged elevation, not shown, or the engagement n 313 may
form a separate element, not shown, which is fixed to the locking element 31 by gluing, soldering,
welding or by the use of fasteners like screws, rivets and so on.
In the embodiment shown, the locking element 31 is formed from a springy plate material.
When there is a need to ensure that a g part 2 on a g element 1 will not fall off, the
locking t 31 is fixed to the working element 1 with a fixing bolt 24 suitable therefor. For this
operation the wearing part 2 is ageously removed from the working element 1.
When a g part 2 is then attached to the working element 1, the wearing part 2 is connected
by its quick-coupling element 21 to the corresponding quick-coupling element of the g element
1, as the wearing part 2 is slid onto the wearing-part mounting 11. During this movement, the
second end portion 312 of the locking element 31 is pressed downwards as a portion of the lee-
side face 2a of the wearing part 2 slides along the front ramp-shaped portion 3131 of the engagement
section 313 until the engagement section 313 locks into the lock-receiving element 22 on the
lee-side face 2a of the wearing part 2 by at least the rear, haped portion 3132 resting
against a corresponding side face of the lock-receiving element 22.
When the wearing part 2 has a tendency to come loose from its engagement with the wearing-part
ng 11, the engagement section 313 will prevent this from developing in such a way that the
wearing part 2 falls off the working element 1, by the pressure of the rear haped portion
3132 of the engagement section 313 against the wearing part 2 providing a force component acting
to push in the direction of the coupling direction of the quick-coupling elements 11, 21.
When a wearing part 2 is to be removed from the g t 1, it is knocked loose from the
wearing-part mounting 11. During this releasing displacement the second end portion 312 of the
locking element 31 is d downwards as a portion of the lee-side face 2a of the wearing part 2
slides along the rear ramp-shaped portion 3132 of the engagement section 313 until the engagement
section 313 is free from the lock-receiving element 22 on the lee-side face 2a of the wearing
part 22.
Claims (8)
1. A locking device (3) for a wearing part (2) detachably ed to a soil-working g element (1) by quick-coupling elements (11, 21), the locking device comprising: a locking t (31) fixed to the soil-working working t (1) and having 5 a resilient end n (312) projecting forward and past a leading edge of the soilworking working element (1), wherein the resilient end portion (312) includes an engagement section (313); and a lock-receiving element (22) ured to engage with the engagement section of the resilient end portion of the locking element, 10 wherein the lock-receiving element (22) is a recess arranged in a lee-side face of the wearing part (2), wherein the lee-side face is shielded relative to a material flow passing over the wearing part (2) when the soil-working working element (1) is in function; wherein the engagement section includes a front n formed as a ramp 15 configured for g contact with a portion of the lee-side face of the wearing part when the wearing part is being connected to one of the quick-coupling elements arranged on the soil-working g element; and wherein the engagement n includes a rear portion formed as a ramp arranged for sliding contact with a portion of a lee-side face of the g part when the 20 wearing part is being disconnected from the one of the quick-coupling elements arranged on the soil-working working element.
2. The locking device (3) according to claim 1, wherein the resilient end portion (312) is configured to be tensioned in an operative position of the engagement section (313).
3. The locking device (3) according to claim 1, wherein the recess (22) is formed as a 25 bottom side of a transverse elevation (23) on a top side of the wearing part (2), and configured to shield the quick-coupling elements.
4. The locking device (3) according to claim 1, wherein the locking element (31) is formed from a springy plate material.
5. The locking device (3) according to claim 1, wherein the engagement section (313) is 30 formed as a bent n of a plate material.
6. The locking device (3) according to claim 4, wherein the ment section (313) is formed as a bent portion of the springy plate material.
7. The locking device (3) according to claim 1, wherein the soil-working working t comprises a cultivator tine, and wherein the g part comprises a cultivator point.
8. The locking device (3) according to claim 1, wherein the quick-coupling elements 5 comprise a socket formed in the wearing part and a pin arranged on the soil-working working element. WO 37820 PCT/N
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20140318 | 2014-03-12 | ||
NO20140318A NO336855B1 (en) | 2014-03-12 | 2014-03-12 | Wear locking device |
PCT/NO2015/050042 WO2015137820A1 (en) | 2014-03-12 | 2015-02-25 | Locking device for a wear part of a soil-working implement |
Publications (2)
Publication Number | Publication Date |
---|---|
NZ721636A NZ721636A (en) | 2021-03-26 |
NZ721636B2 true NZ721636B2 (en) | 2021-06-29 |
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