CA1043002A - Depth indication system for tillage implements - Google Patents
Depth indication system for tillage implementsInfo
- Publication number
- CA1043002A CA1043002A CA202,388A CA202388A CA1043002A CA 1043002 A CA1043002 A CA 1043002A CA 202388 A CA202388 A CA 202388A CA 1043002 A CA1043002 A CA 1043002A
- Authority
- CA
- Canada
- Prior art keywords
- depth
- recording
- operator
- prime mover
- resistance element
- 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.)
- Expired
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
- A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
- G01D5/16—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance
- G01D5/165—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying resistance by relative movement of a point of contact or actuation and a resistive track
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
This invention consists of a depth sensing and recording device for agricultural implements where the depth of operation for soil cultivation is critical.
In combination with the depth changing mechanism of the implement it senses and records the true operating depth at all times and makes this information available to the operator at his station on the tractor or other prime mover. It further enables him to change to a preselected depth when desired.
Heretofore the depth settings for cultivation have been made through the visual observation of the operator from his station on the tractor, particularly when a plurality of tillage implements are used in tandem. This gives rise to errors in human judgment, which this invention over-comes.
This invention consists of a depth sensing and recording device for agricultural implements where the depth of operation for soil cultivation is critical.
In combination with the depth changing mechanism of the implement it senses and records the true operating depth at all times and makes this information available to the operator at his station on the tractor or other prime mover. It further enables him to change to a preselected depth when desired.
Heretofore the depth settings for cultivation have been made through the visual observation of the operator from his station on the tractor, particularly when a plurality of tillage implements are used in tandem. This gives rise to errors in human judgment, which this invention over-comes.
Description
1~3'(~2 -t-This inven~îon relates to a control system for agricultural implements where heights or depths of operation are critical.
More particularly it relates to a dep~h sensing and recording device for a single tillage implement, or for a plurality of tillage implements in tandem. It provides accurate fee~back information to the operator as to the true operating depth at all times.
' Heretofore the depth settings for cultivation have been made through the visual observation of the operator. This gives rise to errors in human judgment since the operator is making his observations from the tractor that draws the tillage implement, or series of tillage implements in tandem.
The sensing and recording features of the present invention enable the operator to know at all times the true depth of culti-vation through the mere observation of a series of gauyes at his operating station on the tractor.
When it is desired to change the depth through the conventional hydxaulic raising and lowering mechanism of the implement, the information is fed back from the sensing components of this invantion to the recording components of this invention.
~n a preferred embodiment of ~his invention the depth sensor is mounted between an oscillating yoke member of the depth determining wheel of the implement and a fixed point in relation to the depth determin4ng wheel. Means to provide this oscillation are the conventional hydraulic or mechanical means for raising and lowering the disc gangs of an agricultural implement.
.~
As the yoke member is oscillated about ~he wheel axis, a slidable rheostat member is maintained in contact with a variable resistance element in the housing of the depth sensor. An electrical 3a circuit connects the depth sensor to a recording gauge at the operator's station. Changes in ampe.rage are readable directly as de~th measurements on the recordi.ng gauge. ~
~t is thus seen that the operator can con~ ~ ~ e~ ~e~ h of till~ge, maintsin it at a desired or preselected degree, or ch~nge it for varying soil condition~.
For a plurality of tillage implements in tandem~ a depth sensor may be mounted on each implement, connected by electrical circuits to a - series oP recording g~uges all mounted at the operator's station.
The invention will now be more fully described in conjunction with the accompanying drawings wherain:
` `
Figure 1 is a front view of a tillage implement showing the manner in which the depth 6ensor device i~ mou~ted in relation to the depth determining wheel.
Figure 2 shows the inner components of the depth sensor devics;
Figure 3 shows the instrument panel with gauges for three depth senæor devices on tillsge implemsnts in tandem.
As shown in ~ig.1, the depth sensor device 1 iæ mounted between the lower yoke memb0r 6 of the depth determ1ning wheel 3 and a point 5 which has a fixed relationship to the axis of rotation of wheel 3.
As the lower yoke member 6 is oscillated about wheel a~is 7 throu~h the raising and lo~ering action of the disc gang, the slidable rod
More particularly it relates to a dep~h sensing and recording device for a single tillage implement, or for a plurality of tillage implements in tandem. It provides accurate fee~back information to the operator as to the true operating depth at all times.
' Heretofore the depth settings for cultivation have been made through the visual observation of the operator. This gives rise to errors in human judgment since the operator is making his observations from the tractor that draws the tillage implement, or series of tillage implements in tandem.
The sensing and recording features of the present invention enable the operator to know at all times the true depth of culti-vation through the mere observation of a series of gauyes at his operating station on the tractor.
When it is desired to change the depth through the conventional hydxaulic raising and lowering mechanism of the implement, the information is fed back from the sensing components of this invantion to the recording components of this invention.
~n a preferred embodiment of ~his invention the depth sensor is mounted between an oscillating yoke member of the depth determining wheel of the implement and a fixed point in relation to the depth determin4ng wheel. Means to provide this oscillation are the conventional hydraulic or mechanical means for raising and lowering the disc gangs of an agricultural implement.
.~
As the yoke member is oscillated about ~he wheel axis, a slidable rheostat member is maintained in contact with a variable resistance element in the housing of the depth sensor. An electrical 3a circuit connects the depth sensor to a recording gauge at the operator's station. Changes in ampe.rage are readable directly as de~th measurements on the recordi.ng gauge. ~
~t is thus seen that the operator can con~ ~ ~ e~ ~e~ h of till~ge, maintsin it at a desired or preselected degree, or ch~nge it for varying soil condition~.
For a plurality of tillage implements in tandem~ a depth sensor may be mounted on each implement, connected by electrical circuits to a - series oP recording g~uges all mounted at the operator's station.
The invention will now be more fully described in conjunction with the accompanying drawings wherain:
` `
Figure 1 is a front view of a tillage implement showing the manner in which the depth 6ensor device i~ mou~ted in relation to the depth determining wheel.
Figure 2 shows the inner components of the depth sensor devics;
Figure 3 shows the instrument panel with gauges for three depth senæor devices on tillsge implemsnts in tandem.
As shown in ~ig.1, the depth sensor device 1 iæ mounted between the lower yoke memb0r 6 of the depth determ1ning wheel 3 and a point 5 which has a fixed relationship to the axis of rotation of wheel 3.
As the lower yoke member 6 is oscillated about wheel a~is 7 throu~h the raising and lo~ering action of the disc gang, the slidable rod
2 of the depth sen~or device 1 is moved in and out.
This in and out movement of rod 2 is further illustrated ~ Fig. 2 wherein is shown a cross-member ~ mounted at the inner end of rod~.
Cross member 8 is pro~ided with a contact point 9 that moves back and forth on a variable resistance element 10 as the rod 2 ~nd its cros9-member 7 are actuated.
The variable resistance element 10 is connected to a 12 volt electrlcal energy source such as a b~ttery. The current flow through cross-member g is taken off by rod 11 and thonce t.o a g~uge on an instrument panel at the operator's station.
This in and out movement of rod 2 is further illustrated ~ Fig. 2 wherein is shown a cross-member ~ mounted at the inner end of rod~.
Cross member 8 is pro~ided with a contact point 9 that moves back and forth on a variable resistance element 10 as the rod 2 ~nd its cros9-member 7 are actuated.
The variable resistance element 10 is connected to a 12 volt electrlcal energy source such as a b~ttery. The current flow through cross-member g is taken off by rod 11 and thonce t.o a g~uge on an instrument panel at the operator's station.
3~
Fig. 3 shows an instrument panel with three gauges Por three depth sensor devic~s on three tillage implements in tandem. These gaug~s are generally indicated at 12. Fig,. 3 also shows the elactrical lead-in wires from the depth ssnsor.
It is ~hus seen that the device of the present invention provides a true depth reading at all times that may be observed as often as the operator desires to do so. At such ti~es as he wishes to change the depth setting the recording gauge shows him that the desired depth has been attained.
It is also within the scope of this in~ention to use its sensing and recording components for indicating the stroke position of a hydraulic cylinder, reel height or table height for a swather, or the direction of tra~el of a tractor where it would be incorporated with its steering m~chanism.
Fig. 3 shows an instrument panel with three gauges Por three depth sensor devic~s on three tillage implements in tandem. These gaug~s are generally indicated at 12. Fig,. 3 also shows the elactrical lead-in wires from the depth ssnsor.
It is ~hus seen that the device of the present invention provides a true depth reading at all times that may be observed as often as the operator desires to do so. At such ti~es as he wishes to change the depth setting the recording gauge shows him that the desired depth has been attained.
It is also within the scope of this in~ention to use its sensing and recording components for indicating the stroke position of a hydraulic cylinder, reel height or table height for a swather, or the direction of tra~el of a tractor where it would be incorporated with its steering m~chanism.
Claims (2)
1. A depth sensing and recording apparatus for a tillage implement having depth changing means comprising an electrical circuit, a var-iable resistance element in said circuit, a mechanically actuated member in slidable contact with said variable resistance element to change the current flow through said circuit, said variable resistance element having a fixed distance pivotal relationship to the wheel axis of an oscillatable ground engaging wheel assembly, said mechanically actuated member being pivotally connected to the wheel assembly to translate oscillating movement of the latter into reciprocating move-ment and wherein the resultant changes in current flow are read as depth readings on a recording gauge in the electrical circuit, said recording gauge being located on the prime mover for the tillage implement.
2. The apparatus of Claim 1 wherein a plurality of tillage implements in tandem relationship to a prime mover are each provided with sensing and recording apparatus with electrical connections to a series of recording gauges at the operator's station on the prime mover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA202,388A CA1043002A (en) | 1974-06-13 | 1974-06-13 | Depth indication system for tillage implements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA202,388A CA1043002A (en) | 1974-06-13 | 1974-06-13 | Depth indication system for tillage implements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1043002A true CA1043002A (en) | 1978-11-21 |
Family
ID=4100375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA202,388A Expired CA1043002A (en) | 1974-06-13 | 1974-06-13 | Depth indication system for tillage implements |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1043002A (en) |
-
1974
- 1974-06-13 CA CA202,388A patent/CA1043002A/en not_active Expired
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