GB2172783A - Cultivator - Google Patents
Cultivator Download PDFInfo
- Publication number
- GB2172783A GB2172783A GB08607516A GB8607516A GB2172783A GB 2172783 A GB2172783 A GB 2172783A GB 08607516 A GB08607516 A GB 08607516A GB 8607516 A GB8607516 A GB 8607516A GB 2172783 A GB2172783 A GB 2172783A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cultivator
- rotors
- hub
- coulter
- rotor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
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
- A01B15/08—Mouldboards
-
- 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
- A01B9/00—Ploughs with rotary driven tools
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Soil Working Implements (AREA)
Abstract
A cultivator including a number of earth working assemblies 10, 11, 12. Each assembly comprises an optional cutting disc 16 followed by a coulter 17 followed by a helically-bladed rotor 18 rotating in the direction shown. As the cultivator moves forward, the rotors 18 will operate to transfer the furrow slice cut by the associated disc and coulter sidewardly into the void left by the previously furrow. During this transfer, a mixing, inversion and cultivating action will also take place. <IMAGE>
Description
SPECIFICATION
Cultivator
The present invention relates to cultivators and in particular, but not exclusively, to cultivators for straw incorporation.
Because of the possibility of a ban on straw burning, quantities of chopped straw or stubble may have to be dealt with. Ploughing in is possible but in unaerobic conditions the ploughed in layers of straw persist for some time. A surface cultivate of the top 15 cm to intimately mix the chopped straw with this depth of soil would be desirable but efficient machinery to do this is not yet available.
An object of the present invention is to provide such machinery.
According to the present invention, a cultivator comprises a plurality of soil-working assemblies each comprising a coulter followed by a helicallybladed rotor, the rotors of the different assemblies being staggered across the width of the cultivator so as in operation to invert and transfer the furrow slice cut by each assembly into the void left behind by the adjacent preceding assembly.
Conveniently, the cultivator includes a cutting disc or share preceding the coulter.
The helically bladed rotors are preferably rotated about approximately horizontal axes inclined to the forward direction of the cultivator over the soil e.g.
at between 10 and 20 thereto, a value of about 14" currently being preferred.
Conveniently, the rotors taper towards their leading ends and in a preferred embodiment the rotors have frusto-conical hubs with an included angle of about 30 .
Conveniently, the coulter is a so-called A-blade coulter.
In one embodiment of the invention, the rotor blades are made up of a series of suitably disposed and dimensioned rods extending radially outwards from the hub portions of the rotors.
Conveniently, in this case, the inner ends of the rods are mounted on a stock of hub-embracing collars each rotatable on the hub between two limits determined by two sets of appropriately positioned stops on the hub, the rods being disposed in a helix of one hand when the hubs engage a first set of the stops and being disposed in a helix of the opposite hand when the hubs engage the second set of stops.
An embodiment of the invention will now be described, by way of example only, with reference to the accompanying drawings in which: Figure 1 is a diagrammatic plan view (not to scale) of a cultivator according to the present invention;
Figure 2 is an end view of one of the rotors looking along the rotation axis of the rotor from the front end; and
Figure 3 is a perspective view of one of the Ablade coulters.
Thus referring now to the drawings, Figure 1 indicates the relative positions of three earthworking assemblies 10, 11, 12 staggered across the width of the cultivator 14.
Each assembly comprises an optional ploughtype ground-driven cutting disc 16 followed by an
A-blade coulter 17 followed by an externally-driven helically-bladed rotor 18.
As will be seen from the drawings, the rotors 18 each have a frusto-conical hub portion carrying three helical blades and both the hub and the blades taper forwardly, the included angle of the hub being about 30 : The span of the blades at the rear end of each rotor is typically about 90 cms and this compares with a disc-to-disc separation of the order of 56 cm.
The axes of rotation of the rotors are approximately horizontal and at about 14" to the direction of travel A of the cultivator although inclinations of from, say, 10 to 20 will probably be acceptable.
In a variation (not shown) of the illustrated embodiment, each rotor hub only carries two helical blades.
In operation of the cultivator, e.g. in a field of stubble, the discs 16 will penetrate the soil, cutting through the trash, and the A-blade coulters 17 will work below the soil at furrow depth to shear the soil horizontally. The rotors 18 will be driven from the tractor shaft in an anti-clockwise direction viewed from the rear at speeds within the range 60--100 rpm and will operate to transfer the furrow slice cut by the associated disc and coulter sidewardly into the void left by the previous furrow as indicated by arrows B. During this transfer, a mixing, inversion and cultivating action will also take place.
The illustrated embodiments of the machine are also suitable for deeper work akin to ploughing and hence the term "cultivator" should be broadly interpreted in the claims and throughout the remainder of the specification.
If reversible ploughing is required, however, then the helical blades could be replaced by an array of suitably disposed and dimensioned rods extending radially outwards from the hub portions of the rotors. The inner ends of the rods are mounted on a stack of hub-embracing collars each rotatable on the hub between limits determined by two sets of appropriately positioned stops on the hub.
To reverse.the plough, the section of the frame carrying the rotors 18 is swing through 180" so that they now impart an oppositely handed movement to the furrow slice. Simultaneously to complete the switch to oppositely handed ploughing, the drive shaft to the rotors reverses their direction of rotation and the forces now exerted by the ground on the tips of the rotor rods cause the helical disposition of the rods to reverse pitch as the collars are rotated from engagement with their first set of stops into engagement with their second set of stops. This system of pitch-reversal is especially suited to the optional two-bladed rotors referred to earlier in the specification.
1. A cultivator having a plurality of soil-working assemblies each comprising a coulter followed by a helically-bladed rotor, the rotors of the different
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (8)
1. A cultivator having a plurality of soil-working assemblies each comprising a coulter followed by a helically-bladed rotor, the rotors of the different assemblies being staggered across the width of the cultivator so as in operation to invert and transfer the furrow slice cut by each assembly into the void left behind by the adjacent preceding assembly.
2. A cultivator as claimed in Claim 1 including a cutting disc or share which precedes the coulter.
3. A cultivator as claimed in Claim 1 or Claim 2 which the helically-bladed rotors are rotated about approximately horizontal axes inclined to the forward direction of the cultivator over the soil.
4. A cultivator as claimed in Claim 1, Claim 2 or
Claim 3 in which the rotors taper towards their leading ends.
5. A cultivator as claimed in any preceding claim in which the coulter is an A-blade coulter.
6. A cultivator as claimed in any preceding claim in which the rotor blades are made up of a series of suitably disposed and dimensioned rods extending radially outwards from the hub portions of the rotors.
7. A cultivator as claimed in Claim 6 in which the inner ends of the rods are mounted on a stack of hub-embracing collars each rotatable on the hub between two limits determined by two sets of appropriately positioned stops on the hub, the rods being disposed in a helix of one hand when the hubs engage a first set of the stops and being disposed in a helix of the opposite hand when the hubs engage the second set of stops.
8. A cultivator substantially as hereinbefore described with reference to and/or as illustrated in the accompanying drawings.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB858508006A GB8508006D0 (en) | 1985-03-27 | 1985-03-27 | Cultivator |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2172783A true GB2172783A (en) | 1986-10-01 |
GB2172783B GB2172783B (en) | 1989-02-01 |
Family
ID=10576757
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB858508006A Pending GB8508006D0 (en) | 1985-03-27 | 1985-03-27 | Cultivator |
GB08607516A Expired GB2172783B (en) | 1985-03-27 | 1986-03-26 | Cultivator |
GB868607616A Pending GB8607616D0 (en) | 1985-03-27 | 1986-03-26 | Cultivator window assemblies |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB858508006A Pending GB8508006D0 (en) | 1985-03-27 | 1985-03-27 | Cultivator |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB868607616A Pending GB8607616D0 (en) | 1985-03-27 | 1986-03-26 | Cultivator window assemblies |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE3610470A1 (en) |
FR (1) | FR2579403A1 (en) |
GB (3) | GB8508006D0 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2522320C1 (en) * | 2013-02-12 | 2014-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный аграрный университет" (ФГБОУ ВПО Казанский ГАУ) | Combined plough for smooth plowing |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29906566U1 (en) | 1999-04-14 | 1999-10-07 | Klammer, Joachim, 03139 Terpe | Arrangement for removing superficial vegetation, partial production of a formation and its loosening |
-
1985
- 1985-03-27 GB GB858508006A patent/GB8508006D0/en active Pending
-
1986
- 1986-03-26 FR FR8604373A patent/FR2579403A1/en not_active Withdrawn
- 1986-03-26 GB GB08607516A patent/GB2172783B/en not_active Expired
- 1986-03-26 GB GB868607616A patent/GB8607616D0/en active Pending
- 1986-03-27 DE DE19863610470 patent/DE3610470A1/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2522320C1 (en) * | 2013-02-12 | 2014-07-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Казанский государственный аграрный университет" (ФГБОУ ВПО Казанский ГАУ) | Combined plough for smooth plowing |
Also Published As
Publication number | Publication date |
---|---|
DE3610470A1 (en) | 1986-10-09 |
GB2172783B (en) | 1989-02-01 |
FR2579403A1 (en) | 1986-10-03 |
GB8508006D0 (en) | 1985-05-01 |
GB8607616D0 (en) | 1986-04-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |