CA1197130A - Ground working implements and wing fold mechanisms therefore - Google Patents
Ground working implements and wing fold mechanisms thereforeInfo
- Publication number
- CA1197130A CA1197130A CA000402171A CA402171A CA1197130A CA 1197130 A CA1197130 A CA 1197130A CA 000402171 A CA000402171 A CA 000402171A CA 402171 A CA402171 A CA 402171A CA 1197130 A CA1197130 A CA 1197130A
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- CA
- Canada
- Prior art keywords
- section
- pin
- link
- adjacent
- sections
- 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
- A01B73/00—Means or arrangements to facilitate transportation of agricultural machines or implements, e.g. folding frames to reduce overall width
- A01B73/02—Folding frames
- A01B73/04—Folding frames foldable about a horizontal axis
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
Abstract
"GROUND WORKING IMPLEMENTS AND WING FOLD MECHANISM THEREFORE"
ABSTRACT OF THE DISCLOSURE
Conventionally, double fold mechanism for sections of ground working implements such as cultivators, plows or the like utilize a hydraulic piston and cylinder assembly to lift one wing section to approximately 90° , and then to lower it over the other center or wing section so that it lies either at an angle to the horizontal or substantially horizontally above the center or other section. Also re-quired is freedom of the wing sections to "float" during field use to allow for uneven ground. This "float" is usual-ly provided for by means of a slotted link connection be-ween the two sections but this slotted link connection allows a period of free fall as the elevating section passes over top dead center or through the center of gravity, when moving in either direction, thus causing relatively high impact loads to the linkage and supporting structure because of the weight of the moving section. The present device utilizes a slotted linkage but also includes a spring load-ed pin within the slots of the links. As the section is moving towards the substantially vertical or top dead center position, the spring forces the pin to the far end of the slot just prior to the wing section passing over top dead center and this takes up the free movement and prevents any free fall from occurring. The spring loaded pin and slots also allow a cushioned floating action when the implement is in the field working position.
ABSTRACT OF THE DISCLOSURE
Conventionally, double fold mechanism for sections of ground working implements such as cultivators, plows or the like utilize a hydraulic piston and cylinder assembly to lift one wing section to approximately 90° , and then to lower it over the other center or wing section so that it lies either at an angle to the horizontal or substantially horizontally above the center or other section. Also re-quired is freedom of the wing sections to "float" during field use to allow for uneven ground. This "float" is usual-ly provided for by means of a slotted link connection be-ween the two sections but this slotted link connection allows a period of free fall as the elevating section passes over top dead center or through the center of gravity, when moving in either direction, thus causing relatively high impact loads to the linkage and supporting structure because of the weight of the moving section. The present device utilizes a slotted linkage but also includes a spring load-ed pin within the slots of the links. As the section is moving towards the substantially vertical or top dead center position, the spring forces the pin to the far end of the slot just prior to the wing section passing over top dead center and this takes up the free movement and prevents any free fall from occurring. The spring loaded pin and slots also allow a cushioned floating action when the implement is in the field working position.
Description
7~
"GROUND WORKING IMPLEMENTS AND WING FOLD MECHANISMS THEREFORE"
BACKGROUND OF TH~ INVENTION
This invention relates to new and useful improve-ments in ground working implements which include at least two sections pivotally connected together in side by side endwise relationship and which furthermore require that one section be lifted upwardly and over top dead center from the field working position to the transport position and vice versa.
It also relates to the wing fold mechanism to per-mit this action to take place.
Conventionally, this movement is by hydraulic pis-ton and cylinder assemblies which lifts the moving section from the substantially horizontal field working position, upwardly through 90 to a substantially vertical position and then over top dead center to a lowered position which is either substantially horizontal with the fixed section or at an angle thereto depending upon design parameters.
Also required, particularly in relatively wide ground working implements, is means to permit one section to float relative to the other and this usually takes the form of lost linkage or slotted linkage connection opera-tively connected between the two sections. However, unforu-nately, such slotted or lost linkage suffers from a severewhich disadvantage particularly when used with a wing section/is pivoted through more than 90 . As it passes over the center ~"3'~3~
"GROUND WORKING IMPLEMENTS AND WING FOLD MECHANISMS THEREFORE"
BACKGROUND OF TH~ INVENTION
This invention relates to new and useful improve-ments in ground working implements which include at least two sections pivotally connected together in side by side endwise relationship and which furthermore require that one section be lifted upwardly and over top dead center from the field working position to the transport position and vice versa.
It also relates to the wing fold mechanism to per-mit this action to take place.
Conventionally, this movement is by hydraulic pis-ton and cylinder assemblies which lifts the moving section from the substantially horizontal field working position, upwardly through 90 to a substantially vertical position and then over top dead center to a lowered position which is either substantially horizontal with the fixed section or at an angle thereto depending upon design parameters.
Also required, particularly in relatively wide ground working implements, is means to permit one section to float relative to the other and this usually takes the form of lost linkage or slotted linkage connection opera-tively connected between the two sections. However, unforu-nately, such slotted or lost linkage suffers from a severewhich disadvantage particularly when used with a wing section/is pivoted through more than 90 . As it passes over the center ~"3'~3~
-2-of gravity or top dead center, just in excess of 90 of initial movement, gravity permits this section to free fall until lost or slotted linkage retards the downwardly move-ment whereupon the hydraulic piston and cylinder assembly may lower section to the required transport position. A
similar free fall occurs when the piston and cylinder assemb-ly extends to move the movable section from the transport position back towards the ground working position.
It will be appreciated that due to the relatively heavy weight of such sections in present day implements, high impact forces occur at the end of the free fall move-ment thus causing considerable strain to the linkage and supporting structure which has to be strengthened consider-ably in order to compensate for these impact forces. Further-more, even with the strengthened structure, damage such as wear and looseness can easily and often do occur after a period of use.
SUMMARY OF THE INVENTION
The present invention overcomes these disadvan-tages by a novel linkage connection between the sectionswhich preserves the floating action required during ground working conditions but which eliminates completelyany free fall of the movable wing section as it passes through 90 and over the center of gravity or top dead center in either direction.
In accordance with the invention there is provided 7~
similar free fall occurs when the piston and cylinder assemb-ly extends to move the movable section from the transport position back towards the ground working position.
It will be appreciated that due to the relatively heavy weight of such sections in present day implements, high impact forces occur at the end of the free fall move-ment thus causing considerable strain to the linkage and supporting structure which has to be strengthened consider-ably in order to compensate for these impact forces. Further-more, even with the strengthened structure, damage such as wear and looseness can easily and often do occur after a period of use.
SUMMARY OF THE INVENTION
The present invention overcomes these disadvan-tages by a novel linkage connection between the sectionswhich preserves the floating action required during ground working conditions but which eliminates completelyany free fall of the movable wing section as it passes through 90 and over the center of gravity or top dead center in either direction.
In accordance with the invention there is provided 7~
-3-a wing fold mechanism for ground worlcing implements such ascultivators and the like which include a first section and a second adjacent section, means pivotally connecting the sections together along a substantially fore and aft hori-zontal axis, means for moving one section relative to the other section from a field working position to a transport position and vice versa, said sections when in a field work-ing position, being substantially in side by side endwise relationship, one with the other, said sections when in a transport position being folded relative to one another at an angle in excess of 90, said means for moving said one section relative to the other section including a hydraulic piston and cylinder assembly on said other section and be-1inkage ing operatively connected to said one section and including/
operatively extending between said sections and said hydra-u-lic piston and cylinder assembly, said linkage including spring controlled loose linkage means for limiting the floating relationship of said sections relative to one another and for controlling the over center movement of said one section relative to said other section when moving from the field working position to the transport position and vice versa.
In accordance with another aspect of the inven-tion, there is provided a ground working implement compris-ing in combination at least two adjacent sections, means pivotally connecting said sections together along a substan-7~L3~
operatively extending between said sections and said hydra-u-lic piston and cylinder assembly, said linkage including spring controlled loose linkage means for limiting the floating relationship of said sections relative to one another and for controlling the over center movement of said one section relative to said other section when moving from the field working position to the transport position and vice versa.
In accordance with another aspect of the inven-tion, there is provided a ground working implement compris-ing in combination at least two adjacent sections, means pivotally connecting said sections together along a substan-7~L3~
-4-tially fore and aft horizontal axis, means for moving one section relative to the other section from a field working pOSitiOIl to a transport position and vice versa, said sec-tions when in a field working position, being substantial-ly in side by side endwise relationship, one with the other, said sections when in a transport posltion being fold~
relative to one another at an angle in excess of 90 , said means for moving said one section relative to the other sec-tion including a hydraulic piston and cylinder assembly on said other section and being operatively connected to said one section and including linkage operatively extending between said sections and said hydraulic piston and cylin-der assembly, said linkage including spring controlled loose linkage means for limiting the floating relationship of said sections relative to one another and for contro]l-ing the over center movement of said one section relative to said other section when moving from the field working position to the transport position and vice versa.
Another advantage of the invention is that the spring loaded pin connection in the loose li.nkage mechanism permits controlled float to occur between adjacent sections during ground working conditions with the spring a]ways tak-ing up clearance and preventing severe vibration occurring which of course adds to wear at the loose link connection points.
A still further advantage of the invention is to 13C~
provide a device of tne cnaracter herewithin described wnich is simple in construction, economical in manllfacture and otnerwise well suited to the purpose for whicn it is design-ed.
With the foregoing, in view, and oLher advantages as will become apparent to tnose skilledin the art to wnicn this invention relates as this specification proceeds, tne invention is herein described by reference to t;~e ac-companying drawings forming a part hereor, wnich includes a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in wnich:
D~SCRIPTIO~ OF ~HE DRAWI~S
Figure 1 is a partially exploded isometric view of tne wing fold mechanism per se.
Figure 1~ is an isometric view of the spring as-sembly per se.
Figure 2 is a partially schematic side elevation of the wing fold mec:~anism incorporated in two adjacent sections and shown as the transport movement is being initi-ated.
Figure 3 is a view similar to Figure 2 but show-in~ the sections just before the center of gravity passes the pivot.
Figure h is a view similar to Figure 3 but snow-ing the sections in the fully folded or transport position.
Figure 5 snows the wing fold mechanisrn extending L3~
between two adjacent sections in the substantially horizon-tal ground working position.
Figure 6 is a view similar to Figure 5 but show-ing the outer wing section pivoting below the plane of the inner wing section.
In the drawings like characters of reference indi-cate corresponding parts in the different figures.
DETAILED DESCRIPTION
Proceeding therefore to describe the invention in detail a reference should first be made to Figures 2 through 6 in which 10 illustrates one ground working imple-ment section and 11 illustrates another adjacently connect-ed ground working section. In these drawings, wing section - 10 may take the form of an outer or movable wing section and 11, an inner wing or a center section, the invention be-ing usable in either location. It will also be appreciated that the sections may carry ground working tools such as on cultivators, cnisel plows or the like. In the section 10, reference character 12 illustrates one longitudinally ex-tending framc member and in the section 11, 13 illustrates a corresponding longitudinally extending Erame member.
The remainder of the ground working implement struc-ture is conven~ional and it is tnerefore not believed neces-sary to illustrate same.
Lvleans collectively designated 14 are provided to pivotally connect the two sections together by the adjacent 3~
ends thereof, and reerence to Figure 1 will show details oE this structure.
~ pair of spaced and parallel lugs or plates lS
are secured as by welding or the like to the a~jacent end 16 of the other Erame member 13 and extend upwardly and out-wardly t:nerefroln. Mating lugs or plates 17 are secured to the adjacent end 18 OL the one fraMe member 12 anQ also ex-tend upwardly and outwardly therefrom and are spaced so that tney will slide between the lugs or plate 15 when as-semblied in order that a pivot pin 19 may engage mating aper-tures 20 and 21 respectively formed tnrough tne engaging lugs t'nus forsnil.~ a horizontal ~ore and aft pivot between the two sections as clearly shown.
A conventional hydraulic piston and cylinder as-sembly collectively designated 22 is provided to move the one section 10 relative to the other section 11, from a Eield working position such as that illustrated in Figures 1 and S, to a transport position such as that illustrated in Figure ~ and vice versa. The piston and cylinder assem-bly includes a cylinder 23 pivotally mounted by means ofpkl 2~ to a lug 25 secured and extending upwardly from t'ne upper surface of the frame member 13 o~ the other section 11.
In tnis partlcular embodimen-t, a stop mem~er 26 also extends upwardly from -this frame member 13 and the anchor lug 25 may be welded to the inner surface thereo~ as clearly shown in Figure 1.
7~31~
A piston rod 27 extends and retracts from the cy-and linder 23/is actuated in a conventional manner (not illustrat-ed) and the distal end 28 of tnis piston rod is pivotally cotmected `cy rneans of a pivot pin 29, to adjacent the one end 30 of a connector link collectively designated 31.
This connector linK, in this emDodimen~ consists of two substantially elongated strips or plates 31 maintained in spaced and parallel relationship by means of a transverse brace 32 welded tnereto as clearly illustrated in Figure 1.
This connector link 31 is pivotally connected by means of a pivot pin 33, adjacent the other end 34 thereof, to braces 35 forming part of the aforementioned lugs 17 and when in t'ne field working position, it will be observed tnat tne piston and cylinder assembly 22 inclines upwardly and outwardly towards the connector link 31 which also in-clines upwardly and outwardly from its relevant section 10.
'rhe pin 33 engages through apertures 36 -Formed in tne braces 35 outboard and below the apertures 21 connecting lugs 17 to lugs 15.
Control linkage means is provided collectively designated 37, said contro:l linkage taking the forrn of a pair of elongated plates or strips 38 eac-n pivotally con-nected adjacent one end 39 t'nereof, one UpOTI the outer side of each of tne lugs 15 extending 'rom the frame member 13.
Pivot pin 40 extends between apertures within adjacent the ends 39 and througn corresponding apertures in the lugs or ~197~3~
g plates 15 inboard and below the aperture 20 receiving pins 19 .
These control links 38 are provided with closed end-ed elongated slots 41 adjacent t'ne other ends 42 thereof in alignment with the longitudinal axes of the plates 38.
Spring loaded means collectively designated 43 is operatively connected between the control links 37 and the connector links 31. This spring loaded means includes a rod 44 having a cross pin 45 extending therethrough adjacent one end 46 thereof with tne distal ends of the cross pin extending transversely through bearing bosses 32A in each of the connector links 31, whicn in turn bearingly engage with-in the slots 41 in the control links 38.
A elongated slot 47 is formed within the rod 44 adjacent the other end 48 thereof, said slot being closed ended and receiving a cross pivot connection 49 in the form of a pin which rides freely in the slot 47. A compression spring 50 surrounds the rod 44 and reacts between the cross pin 45 and the lower pivot pin 49 (by means of shouldered washer 49A) riding witnin slot 47 and normally urges the rod upwardly so t'nat the lower end of slot 47 in rod 44, en-gages the pin 49. Pin 49 is connected between the two con-trol plates 38 by means of a nut and bolt assembly 51, said connection being intermediate the ends 39 and 42 of these control plates as clearly shown. This means that the spring 50 is normally urging the pin 45 towards the upper or outer 7~3~3 ends 41A of the slots 41 in the control links.
In operation, reference should be made to Figures 2 through 6 with Figure 5 showing the two wing sections 10 and 11 in a ground working position with the spring loaded pin 45 being situated intermediate the ends of the slots 41 thus permitting controlled float to occur between the - sections with the compression springs 50 assisting in holding up the end wing which tends to dip. The device preferably is mounted adjacent the front corner of the sections as it is this corner which tends to dip most and springs 50 counter-act this dipping tendency rather than accentuating same.
Also tne device assists in preventing excessive vibration or wear from occurring to the various linkage points.
It will be noted from Figure 6 that the outer sec-tion 10 may drop at an angle due to uneven ground until the pin 45 bottoms on the lower end of the slot 41. It will also be appreciated that it can move upwardly by a similar amount (not illustrated) thus giving the desired range of float upwardly and downwardly between the two sections 10 and ll.
When it is desired to move tne section 10 to a transport position relative to section 11, the piston and cy-linder assembly 22 is retracted so that the piston rod 27 pulls on the connector links 31 and commences to lift the section 10 pivoting around the connecting pivot pin 19 mov-ing it in the direction of arrow 52 as illustrated in Figure 1.
It should be noted that the weight of the section 10 causes the pin 45 to bottom in the slots 41 as clearly shown in Figure 2. As the section 10 approaches the 90 mark or towards the tcp dead center before the center of gravity of wing 10 passes over top dead center, the effect of the weight of section 10 is reduced considerably because of tne approach-ing vertical position thereof. This enables the compres-sion spring S0 to force the pin 45 to the upper end 41A of the slots 41 as clearly shown in Figure 3. Then as the sec-tion lO moves over top dead center and the center of gravity passes from the righthand side towards the lefthand side (with respect to Figure 3), there is no free fall permitted because the pin has shifted to the upper ends of the slots 45. Tne piston and cylinder assembly then takes the weight of this section as it is lowered towards the transport posi-tion illustrated in Figure 4 whereupon it rests upon the upper end of the stop 26 in a position shown in Figure 4.
It will of course be appreciated, that depending upon de-sign parameters,the section 10 may not lie exactly parallel with the section 11 but may be at an upward angle relative thereto. It should also be noted that the pin 45 is main-tained at the upper end of slots 41 by springs 50 thus pre-venting the pin from moving downwardly over center with re-spect to a line extending through the connection of the cylinder to bracket 2S and pivot pin 2g. If this occurred then the system would lock-up.
7~30 -]2-The same action takes place as the section 10 is moved by the extension of the piston and cylinder 22, from the transport position shown in Figure 4, towards the field position snown in Figure 5. Once again the spring 50 takes up the slack and prevents free fall from occurring as it passes over the top dead center position towards the posi-tion illustrated itl Figure 3 and then when the weight is sufficient, the pressure of the spring is gradully overcome so that the pin moves to the lowermost position of the slots 41 as clearly shown in Figure 2.
Since various mo.difications can be made in my in-vention as hereinabove described, and many apparently wide-ly different embodiments of same made within the spirit and scope of the claims without departing from sllch spirit and scope, it is intended tnat all matter contained in the ac-companying specification shall be interpreted as illustrative only and not in a limiting sense.
relative to one another at an angle in excess of 90 , said means for moving said one section relative to the other sec-tion including a hydraulic piston and cylinder assembly on said other section and being operatively connected to said one section and including linkage operatively extending between said sections and said hydraulic piston and cylin-der assembly, said linkage including spring controlled loose linkage means for limiting the floating relationship of said sections relative to one another and for contro]l-ing the over center movement of said one section relative to said other section when moving from the field working position to the transport position and vice versa.
Another advantage of the invention is that the spring loaded pin connection in the loose li.nkage mechanism permits controlled float to occur between adjacent sections during ground working conditions with the spring a]ways tak-ing up clearance and preventing severe vibration occurring which of course adds to wear at the loose link connection points.
A still further advantage of the invention is to 13C~
provide a device of tne cnaracter herewithin described wnich is simple in construction, economical in manllfacture and otnerwise well suited to the purpose for whicn it is design-ed.
With the foregoing, in view, and oLher advantages as will become apparent to tnose skilledin the art to wnicn this invention relates as this specification proceeds, tne invention is herein described by reference to t;~e ac-companying drawings forming a part hereor, wnich includes a description of the best mode known to the applicant and of the preferred typical embodiment of the principles of the present invention, in wnich:
D~SCRIPTIO~ OF ~HE DRAWI~S
Figure 1 is a partially exploded isometric view of tne wing fold mechanism per se.
Figure 1~ is an isometric view of the spring as-sembly per se.
Figure 2 is a partially schematic side elevation of the wing fold mec:~anism incorporated in two adjacent sections and shown as the transport movement is being initi-ated.
Figure 3 is a view similar to Figure 2 but show-in~ the sections just before the center of gravity passes the pivot.
Figure h is a view similar to Figure 3 but snow-ing the sections in the fully folded or transport position.
Figure 5 snows the wing fold mechanisrn extending L3~
between two adjacent sections in the substantially horizon-tal ground working position.
Figure 6 is a view similar to Figure 5 but show-ing the outer wing section pivoting below the plane of the inner wing section.
In the drawings like characters of reference indi-cate corresponding parts in the different figures.
DETAILED DESCRIPTION
Proceeding therefore to describe the invention in detail a reference should first be made to Figures 2 through 6 in which 10 illustrates one ground working imple-ment section and 11 illustrates another adjacently connect-ed ground working section. In these drawings, wing section - 10 may take the form of an outer or movable wing section and 11, an inner wing or a center section, the invention be-ing usable in either location. It will also be appreciated that the sections may carry ground working tools such as on cultivators, cnisel plows or the like. In the section 10, reference character 12 illustrates one longitudinally ex-tending framc member and in the section 11, 13 illustrates a corresponding longitudinally extending Erame member.
The remainder of the ground working implement struc-ture is conven~ional and it is tnerefore not believed neces-sary to illustrate same.
Lvleans collectively designated 14 are provided to pivotally connect the two sections together by the adjacent 3~
ends thereof, and reerence to Figure 1 will show details oE this structure.
~ pair of spaced and parallel lugs or plates lS
are secured as by welding or the like to the a~jacent end 16 of the other Erame member 13 and extend upwardly and out-wardly t:nerefroln. Mating lugs or plates 17 are secured to the adjacent end 18 OL the one fraMe member 12 anQ also ex-tend upwardly and outwardly therefrom and are spaced so that tney will slide between the lugs or plate 15 when as-semblied in order that a pivot pin 19 may engage mating aper-tures 20 and 21 respectively formed tnrough tne engaging lugs t'nus forsnil.~ a horizontal ~ore and aft pivot between the two sections as clearly shown.
A conventional hydraulic piston and cylinder as-sembly collectively designated 22 is provided to move the one section 10 relative to the other section 11, from a Eield working position such as that illustrated in Figures 1 and S, to a transport position such as that illustrated in Figure ~ and vice versa. The piston and cylinder assem-bly includes a cylinder 23 pivotally mounted by means ofpkl 2~ to a lug 25 secured and extending upwardly from t'ne upper surface of the frame member 13 o~ the other section 11.
In tnis partlcular embodimen-t, a stop mem~er 26 also extends upwardly from -this frame member 13 and the anchor lug 25 may be welded to the inner surface thereo~ as clearly shown in Figure 1.
7~31~
A piston rod 27 extends and retracts from the cy-and linder 23/is actuated in a conventional manner (not illustrat-ed) and the distal end 28 of tnis piston rod is pivotally cotmected `cy rneans of a pivot pin 29, to adjacent the one end 30 of a connector link collectively designated 31.
This connector linK, in this emDodimen~ consists of two substantially elongated strips or plates 31 maintained in spaced and parallel relationship by means of a transverse brace 32 welded tnereto as clearly illustrated in Figure 1.
This connector link 31 is pivotally connected by means of a pivot pin 33, adjacent the other end 34 thereof, to braces 35 forming part of the aforementioned lugs 17 and when in t'ne field working position, it will be observed tnat tne piston and cylinder assembly 22 inclines upwardly and outwardly towards the connector link 31 which also in-clines upwardly and outwardly from its relevant section 10.
'rhe pin 33 engages through apertures 36 -Formed in tne braces 35 outboard and below the apertures 21 connecting lugs 17 to lugs 15.
Control linkage means is provided collectively designated 37, said contro:l linkage taking the forrn of a pair of elongated plates or strips 38 eac-n pivotally con-nected adjacent one end 39 t'nereof, one UpOTI the outer side of each of tne lugs 15 extending 'rom the frame member 13.
Pivot pin 40 extends between apertures within adjacent the ends 39 and througn corresponding apertures in the lugs or ~197~3~
g plates 15 inboard and below the aperture 20 receiving pins 19 .
These control links 38 are provided with closed end-ed elongated slots 41 adjacent t'ne other ends 42 thereof in alignment with the longitudinal axes of the plates 38.
Spring loaded means collectively designated 43 is operatively connected between the control links 37 and the connector links 31. This spring loaded means includes a rod 44 having a cross pin 45 extending therethrough adjacent one end 46 thereof with tne distal ends of the cross pin extending transversely through bearing bosses 32A in each of the connector links 31, whicn in turn bearingly engage with-in the slots 41 in the control links 38.
A elongated slot 47 is formed within the rod 44 adjacent the other end 48 thereof, said slot being closed ended and receiving a cross pivot connection 49 in the form of a pin which rides freely in the slot 47. A compression spring 50 surrounds the rod 44 and reacts between the cross pin 45 and the lower pivot pin 49 (by means of shouldered washer 49A) riding witnin slot 47 and normally urges the rod upwardly so t'nat the lower end of slot 47 in rod 44, en-gages the pin 49. Pin 49 is connected between the two con-trol plates 38 by means of a nut and bolt assembly 51, said connection being intermediate the ends 39 and 42 of these control plates as clearly shown. This means that the spring 50 is normally urging the pin 45 towards the upper or outer 7~3~3 ends 41A of the slots 41 in the control links.
In operation, reference should be made to Figures 2 through 6 with Figure 5 showing the two wing sections 10 and 11 in a ground working position with the spring loaded pin 45 being situated intermediate the ends of the slots 41 thus permitting controlled float to occur between the - sections with the compression springs 50 assisting in holding up the end wing which tends to dip. The device preferably is mounted adjacent the front corner of the sections as it is this corner which tends to dip most and springs 50 counter-act this dipping tendency rather than accentuating same.
Also tne device assists in preventing excessive vibration or wear from occurring to the various linkage points.
It will be noted from Figure 6 that the outer sec-tion 10 may drop at an angle due to uneven ground until the pin 45 bottoms on the lower end of the slot 41. It will also be appreciated that it can move upwardly by a similar amount (not illustrated) thus giving the desired range of float upwardly and downwardly between the two sections 10 and ll.
When it is desired to move tne section 10 to a transport position relative to section 11, the piston and cy-linder assembly 22 is retracted so that the piston rod 27 pulls on the connector links 31 and commences to lift the section 10 pivoting around the connecting pivot pin 19 mov-ing it in the direction of arrow 52 as illustrated in Figure 1.
It should be noted that the weight of the section 10 causes the pin 45 to bottom in the slots 41 as clearly shown in Figure 2. As the section 10 approaches the 90 mark or towards the tcp dead center before the center of gravity of wing 10 passes over top dead center, the effect of the weight of section 10 is reduced considerably because of tne approach-ing vertical position thereof. This enables the compres-sion spring S0 to force the pin 45 to the upper end 41A of the slots 41 as clearly shown in Figure 3. Then as the sec-tion lO moves over top dead center and the center of gravity passes from the righthand side towards the lefthand side (with respect to Figure 3), there is no free fall permitted because the pin has shifted to the upper ends of the slots 45. Tne piston and cylinder assembly then takes the weight of this section as it is lowered towards the transport posi-tion illustrated in Figure 4 whereupon it rests upon the upper end of the stop 26 in a position shown in Figure 4.
It will of course be appreciated, that depending upon de-sign parameters,the section 10 may not lie exactly parallel with the section 11 but may be at an upward angle relative thereto. It should also be noted that the pin 45 is main-tained at the upper end of slots 41 by springs 50 thus pre-venting the pin from moving downwardly over center with re-spect to a line extending through the connection of the cylinder to bracket 2S and pivot pin 2g. If this occurred then the system would lock-up.
7~30 -]2-The same action takes place as the section 10 is moved by the extension of the piston and cylinder 22, from the transport position shown in Figure 4, towards the field position snown in Figure 5. Once again the spring 50 takes up the slack and prevents free fall from occurring as it passes over the top dead center position towards the posi-tion illustrated itl Figure 3 and then when the weight is sufficient, the pressure of the spring is gradully overcome so that the pin moves to the lowermost position of the slots 41 as clearly shown in Figure 2.
Since various mo.difications can be made in my in-vention as hereinabove described, and many apparently wide-ly different embodiments of same made within the spirit and scope of the claims without departing from sllch spirit and scope, it is intended tnat all matter contained in the ac-companying specification shall be interpreted as illustrative only and not in a limiting sense.
Claims
CLAIMS:
(1) A wing fold mechanism for ground working im-plements such as cultivators and the like which include a first section and a second adjacent section, means pivotal-ly connecting the sections together along a substantially fore and aft horizontal axis, means for moving one section relative to the other section from a field working position to a transport position and vice versa, said sections when in a field working position, being substantially in side by side endwise relationship, one with the other, said sections when in a transport position being folded relative to one another at an angle in excess of 90° , said means for mov-ing said one section relative to the other section including a hydraulic piston and cylinder assembly on said other sec-tion and being operatively connected to said one section and including linkage operatively extending between said sections and said hydraulic piston and cylinder assembly, said linkage including spring controlled loose linkage means for limiting the floating relationship of said sections re-lative to one another and for controlling the over center movement of said one section relative to said other section when moving from the field working position to the transport position and vice versa.
(2) The mechanism according to Claim 1 in which said means pivotally connecting the sections together in-cludes pivot mounting means on the adjacent ends of said sections and a pivot pin connecting said pivot mounting means together.
(3) The mechanism according to Claim 2 in which said pivot mounting means includes lugs extending upwardly and outwardly of each adjacent end of said sections.
(4) The mechanism according to Claim 2 in which said means for moving one section relative to the other sec-tion includes said hydraulic piston and cylinder assembly being pivotally mounted to said other section by one end thereof, said linkage including a connector link pivotally connected by one end thereof to the other end of said piston and cylinder assembly and being pivotally mounted by the other end thereof to said one section adjacent said fore and aft axis.
(5) The mechanism according to Claim 3 in which said means for moving one section relative to the other sec-tion includes said hydraulic piston and cylinder assembly being pivotally mounted to said other section by one end thereof, said linkage including a connector link pivotally connected by one end thereof to the other end of said piston and cylinder assembly and being pivotally mounted by the other end thereof to said one section adjacent said fore and aft axis.
(6) The mechanism according to Claim 4 in which said spring controlled loose linkage means includes a con-trol link pivotally connected by one end thereof to said other section adjacent said fore and aft axis and extending upwardly therefrom, a spring loaded loose link connection operatively connected between said control link and adjacent the one end of said connector link.
(7) The mechanism according to Claim 5 in which said spring controlled loose linkage means includes a con-trol link pivotally connected by one end thereof to said other section adjacent said fore and aft axis and extending upwardly therefrom, a spring loaded loose link connection operatively connected between said control link and adjacent the one end of said connector link.
(8) The mechanism according to Claim 6 in which said spring loaded loose link connection includes an elongat-ed, closed ended slot in said control link adjacent said other end thereof, a pin extending through said connector link and being mounted for sliding movement in said slot, and compression spring means operatively extending between said pin and said control link between said slot and said one end thereof.
(9) The mechanism according to Claim 7 in which said spring loaded loose link connection includes an elongat-ed, closed-ended slot in said control link adjacent said other end thereof, a pin extending through said connector link and being mounted for sliding movement in said slot, and compression spring means operatively extending between said pin and said control link between said slot and said one end thereof.
(10) The mechanism according to Claim 8 in which said control link comprises a pair of spaced and parallel links one upon each side of said pivot mounting means on said other section, said connector link engaging between said spaced and parallel control links, a mounting rod for said compression spring, said pin extending upon each side of one end of said mounting rod and bearingly en-gaging through said connecting links intermediate the ends thereof and operatively extending into said slots in said control links, a closed ended slot formed through said mounting rod adjacent the other end thereof, a further pin extending through said closed-ended slot in said mounting rod and being pivotally secured to said control links inter-mediate the ends thereof, said compression spring surround-ing said mounting rod and reacting between said further pin and said pin and normally urging said rod and hence said pin towards the upper ends of said slots in said control links.
(11) The mechanism according to Claim 9 in which said control link comprises a pair of spaced and parallel links one upon each side of said pivot mounting means on said other section, said connector link engaging between said spaced and parallel control links, a mounting rod for said compression spring, said pin extending upon each side of one end of said mounting rod and bearingly en-gaging through said connecting links intermediate the ends thereof and operatively extending into said slots in said control links, a closed ended slot formed through said mounting rod adjacent the other end thereof, a further pin extending through said closed-ended slot in said mounting rod and being pivotally secured to said control links inter-mediate the ends thereof, said compression spring surround-ing said mounting rod and reacting between said further pin and said pin and normally urging said rod and hence said pin towards the upper ends of said slots in said control links.
(12) A ground working implement comprising in combination at least two adjacent sections, means pivotally connecting said sections together along a substantially fore and aft horizontal axis, means for moving one section relative to the other section from a field working position to a transport position and vice versa, said sections when in a field working position, being substantially in side by side endwise relationship, one with the other, said sections when in a transport position being folded relative to one another at an angle in excess of 90°, said means for moving said one section relative to the other section including a hydraulic piston and cylinder assembly on said other section and being operatively connected to said one section and including linkage operatively extending between said sections and said hydraulic piston and cylinder assembly, said linkage including spring controlled loose linkage means for limiting the floating relationship of said sections relative to one another and for controlling the over center movement of said one section relative to said other section when moving from the field working position to the transport position and vice versa.
(13) The ground working implement according to Claim 12 in which said means pivotally connecting the sec-tions together includes pivot mounting means on the adjacent ends of said sections and a pivot pin connecting said pivot mounting means together.
(16) The ground working implement according to Claim 13 in which said pivot mounting means includes lugs extending upwardly and outwardly of each adjacent end of said sections.
(15) The ground working implement according to Claim 13 in which said means for moving one section relative to the other section includes said hydraulic piston and cy-linder assembly being pivotally mounted to said other sec-tion by one end thereof, said linkage including a connector link pivotally connected by one end thereof to the other end of said piston and cylinder assembly and being pivotally mounted by the other end thereof to said one section adja-cent said fore and aft axis.
(16) The ground working implement according to Claim 14 in which said means for moving one section relative to the other section includes said hydraulic piston and cy-linder assembly being pivotally mounted to said other sec-tion by one end thereof, said linkage including a connector link pivotally connected by one end thereof to the other end of said piston and cylinder assembly and being pivotally mounted by the other end thereof to said one section adja-cent said fore and aft axis.
(17) The ground working implement according to Claim 15 in which said spring controlled loose linkage means includes a control link pivotally connected by one end there-of to said other section adjacent said fore and aft axis and extending upwardly therefrom, a spring loaded loose link connection between the upper end of said control link and adjacent the one end of said connector link.
(18) The ground working implement according to Claim 16 in which said spring controlled loose linkage means includes a control link pivotally connected by one end there-of to said other section adjacent said fore and aft axis and extending upwardly therefrom, a spring loaded loose link connection between the upper end of said control link and adjacent the one end of said connector link.
(19) The ground working implement according to Claim 17 in which said spring loaded loose link connection includes an elongated, closed-ended slot in said control link adjacent said other end thereof, a pin extending through said connector link and being mounted for sliding movement in said slot, and compression spring means operative-ly extending between said pin and said control link between said slot and said one end thereof.
(20) The ground working implement according to Claim 18 in which said spring loaded loose link connection includes an elongated, closed-ended slot in said control link adjacent said other end thereof, a pin extending through said connector link and being mounted for sliding movement in said slot, and compression spring means operative-ly extending between said pin and said control link between said slot and said one end thereof.
(21) The ground working implement according to Claim 19 in which said control link comprises a pair of spaced and parallel links one upon each side of said pivot mounting means on said other section, said connector link engaging between said spaced and parallel control links, a mounting rod for said compression spring, said pin extending upon each side of one end of said mounting rod and bearingly en-gaging through said connecting links intermediate the ends thereof and operatively extending into said slots in said control links, a closed ended slot formed through said mounting rod adjacent the other end thereof, a further pin extending through said closed-ended slot in said mounting rod and being pivotally secured to said control links inter-mediate the ends thereof, said compression spring surround-ing said mounting rod and reacting between said further pin and said pin and normally urging said rod and hence said pin towards the upper ends of said slots in said control links.
(22) The ground working implement according to Claim 20 in which said control link comprises a pair of spaced and parallel links one upon each side of said pivot mounting means on said other section, said connector link engaging between said spaced and parallel control links, a mounting rod for said compression spring, said pin extending upon each side of one end of said mounting rod and bearingly en-gaging through said connecting links intermediate the ends thereof and operatively extending into said slots in said control links, a closed ended slot formed through said mounting rod adjacent the other end thereof, a further pin extending through said closed-ended slot in said mounting rod and being pivotally secured to said control links inter-mediate the ends thereof, said compression spring surround-ing said mounting rod and reacting between said further pin and said pin and normally urging said rod and hence said pin towards the upper ends of said slots in said control links.
(1) A wing fold mechanism for ground working im-plements such as cultivators and the like which include a first section and a second adjacent section, means pivotal-ly connecting the sections together along a substantially fore and aft horizontal axis, means for moving one section relative to the other section from a field working position to a transport position and vice versa, said sections when in a field working position, being substantially in side by side endwise relationship, one with the other, said sections when in a transport position being folded relative to one another at an angle in excess of 90° , said means for mov-ing said one section relative to the other section including a hydraulic piston and cylinder assembly on said other sec-tion and being operatively connected to said one section and including linkage operatively extending between said sections and said hydraulic piston and cylinder assembly, said linkage including spring controlled loose linkage means for limiting the floating relationship of said sections re-lative to one another and for controlling the over center movement of said one section relative to said other section when moving from the field working position to the transport position and vice versa.
(2) The mechanism according to Claim 1 in which said means pivotally connecting the sections together in-cludes pivot mounting means on the adjacent ends of said sections and a pivot pin connecting said pivot mounting means together.
(3) The mechanism according to Claim 2 in which said pivot mounting means includes lugs extending upwardly and outwardly of each adjacent end of said sections.
(4) The mechanism according to Claim 2 in which said means for moving one section relative to the other sec-tion includes said hydraulic piston and cylinder assembly being pivotally mounted to said other section by one end thereof, said linkage including a connector link pivotally connected by one end thereof to the other end of said piston and cylinder assembly and being pivotally mounted by the other end thereof to said one section adjacent said fore and aft axis.
(5) The mechanism according to Claim 3 in which said means for moving one section relative to the other sec-tion includes said hydraulic piston and cylinder assembly being pivotally mounted to said other section by one end thereof, said linkage including a connector link pivotally connected by one end thereof to the other end of said piston and cylinder assembly and being pivotally mounted by the other end thereof to said one section adjacent said fore and aft axis.
(6) The mechanism according to Claim 4 in which said spring controlled loose linkage means includes a con-trol link pivotally connected by one end thereof to said other section adjacent said fore and aft axis and extending upwardly therefrom, a spring loaded loose link connection operatively connected between said control link and adjacent the one end of said connector link.
(7) The mechanism according to Claim 5 in which said spring controlled loose linkage means includes a con-trol link pivotally connected by one end thereof to said other section adjacent said fore and aft axis and extending upwardly therefrom, a spring loaded loose link connection operatively connected between said control link and adjacent the one end of said connector link.
(8) The mechanism according to Claim 6 in which said spring loaded loose link connection includes an elongat-ed, closed ended slot in said control link adjacent said other end thereof, a pin extending through said connector link and being mounted for sliding movement in said slot, and compression spring means operatively extending between said pin and said control link between said slot and said one end thereof.
(9) The mechanism according to Claim 7 in which said spring loaded loose link connection includes an elongat-ed, closed-ended slot in said control link adjacent said other end thereof, a pin extending through said connector link and being mounted for sliding movement in said slot, and compression spring means operatively extending between said pin and said control link between said slot and said one end thereof.
(10) The mechanism according to Claim 8 in which said control link comprises a pair of spaced and parallel links one upon each side of said pivot mounting means on said other section, said connector link engaging between said spaced and parallel control links, a mounting rod for said compression spring, said pin extending upon each side of one end of said mounting rod and bearingly en-gaging through said connecting links intermediate the ends thereof and operatively extending into said slots in said control links, a closed ended slot formed through said mounting rod adjacent the other end thereof, a further pin extending through said closed-ended slot in said mounting rod and being pivotally secured to said control links inter-mediate the ends thereof, said compression spring surround-ing said mounting rod and reacting between said further pin and said pin and normally urging said rod and hence said pin towards the upper ends of said slots in said control links.
(11) The mechanism according to Claim 9 in which said control link comprises a pair of spaced and parallel links one upon each side of said pivot mounting means on said other section, said connector link engaging between said spaced and parallel control links, a mounting rod for said compression spring, said pin extending upon each side of one end of said mounting rod and bearingly en-gaging through said connecting links intermediate the ends thereof and operatively extending into said slots in said control links, a closed ended slot formed through said mounting rod adjacent the other end thereof, a further pin extending through said closed-ended slot in said mounting rod and being pivotally secured to said control links inter-mediate the ends thereof, said compression spring surround-ing said mounting rod and reacting between said further pin and said pin and normally urging said rod and hence said pin towards the upper ends of said slots in said control links.
(12) A ground working implement comprising in combination at least two adjacent sections, means pivotally connecting said sections together along a substantially fore and aft horizontal axis, means for moving one section relative to the other section from a field working position to a transport position and vice versa, said sections when in a field working position, being substantially in side by side endwise relationship, one with the other, said sections when in a transport position being folded relative to one another at an angle in excess of 90°, said means for moving said one section relative to the other section including a hydraulic piston and cylinder assembly on said other section and being operatively connected to said one section and including linkage operatively extending between said sections and said hydraulic piston and cylinder assembly, said linkage including spring controlled loose linkage means for limiting the floating relationship of said sections relative to one another and for controlling the over center movement of said one section relative to said other section when moving from the field working position to the transport position and vice versa.
(13) The ground working implement according to Claim 12 in which said means pivotally connecting the sec-tions together includes pivot mounting means on the adjacent ends of said sections and a pivot pin connecting said pivot mounting means together.
(16) The ground working implement according to Claim 13 in which said pivot mounting means includes lugs extending upwardly and outwardly of each adjacent end of said sections.
(15) The ground working implement according to Claim 13 in which said means for moving one section relative to the other section includes said hydraulic piston and cy-linder assembly being pivotally mounted to said other sec-tion by one end thereof, said linkage including a connector link pivotally connected by one end thereof to the other end of said piston and cylinder assembly and being pivotally mounted by the other end thereof to said one section adja-cent said fore and aft axis.
(16) The ground working implement according to Claim 14 in which said means for moving one section relative to the other section includes said hydraulic piston and cy-linder assembly being pivotally mounted to said other sec-tion by one end thereof, said linkage including a connector link pivotally connected by one end thereof to the other end of said piston and cylinder assembly and being pivotally mounted by the other end thereof to said one section adja-cent said fore and aft axis.
(17) The ground working implement according to Claim 15 in which said spring controlled loose linkage means includes a control link pivotally connected by one end there-of to said other section adjacent said fore and aft axis and extending upwardly therefrom, a spring loaded loose link connection between the upper end of said control link and adjacent the one end of said connector link.
(18) The ground working implement according to Claim 16 in which said spring controlled loose linkage means includes a control link pivotally connected by one end there-of to said other section adjacent said fore and aft axis and extending upwardly therefrom, a spring loaded loose link connection between the upper end of said control link and adjacent the one end of said connector link.
(19) The ground working implement according to Claim 17 in which said spring loaded loose link connection includes an elongated, closed-ended slot in said control link adjacent said other end thereof, a pin extending through said connector link and being mounted for sliding movement in said slot, and compression spring means operative-ly extending between said pin and said control link between said slot and said one end thereof.
(20) The ground working implement according to Claim 18 in which said spring loaded loose link connection includes an elongated, closed-ended slot in said control link adjacent said other end thereof, a pin extending through said connector link and being mounted for sliding movement in said slot, and compression spring means operative-ly extending between said pin and said control link between said slot and said one end thereof.
(21) The ground working implement according to Claim 19 in which said control link comprises a pair of spaced and parallel links one upon each side of said pivot mounting means on said other section, said connector link engaging between said spaced and parallel control links, a mounting rod for said compression spring, said pin extending upon each side of one end of said mounting rod and bearingly en-gaging through said connecting links intermediate the ends thereof and operatively extending into said slots in said control links, a closed ended slot formed through said mounting rod adjacent the other end thereof, a further pin extending through said closed-ended slot in said mounting rod and being pivotally secured to said control links inter-mediate the ends thereof, said compression spring surround-ing said mounting rod and reacting between said further pin and said pin and normally urging said rod and hence said pin towards the upper ends of said slots in said control links.
(22) The ground working implement according to Claim 20 in which said control link comprises a pair of spaced and parallel links one upon each side of said pivot mounting means on said other section, said connector link engaging between said spaced and parallel control links, a mounting rod for said compression spring, said pin extending upon each side of one end of said mounting rod and bearingly en-gaging through said connecting links intermediate the ends thereof and operatively extending into said slots in said control links, a closed ended slot formed through said mounting rod adjacent the other end thereof, a further pin extending through said closed-ended slot in said mounting rod and being pivotally secured to said control links inter-mediate the ends thereof, said compression spring surround-ing said mounting rod and reacting between said further pin and said pin and normally urging said rod and hence said pin towards the upper ends of said slots in said control links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000402171A CA1197130A (en) | 1982-05-03 | 1982-05-03 | Ground working implements and wing fold mechanisms therefore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000402171A CA1197130A (en) | 1982-05-03 | 1982-05-03 | Ground working implements and wing fold mechanisms therefore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1197130A true CA1197130A (en) | 1985-11-26 |
Family
ID=4122698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000402171A Expired CA1197130A (en) | 1982-05-03 | 1982-05-03 | Ground working implements and wing fold mechanisms therefore |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1197130A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0326836A1 (en) * | 1988-02-03 | 1989-08-09 | Klemens Kalverkamp | Header for a combine harvester |
| US4862758A (en) * | 1986-06-06 | 1989-09-05 | J. I. Case Company | Hinge assembly for folding implement frame |
| US4878545A (en) * | 1987-06-15 | 1989-11-07 | Victory Equipment (1983) Limited | Agricultural implement with foldable wing |
| EP3284330A1 (en) * | 2016-08-19 | 2018-02-21 | Kuhn S.A. | Agricultural machine having a folding assistance device |
| EP3884766A1 (en) * | 2020-03-25 | 2021-09-29 | CNH Industrial Belgium N.V. | Agricultural implement |
-
1982
- 1982-05-03 CA CA000402171A patent/CA1197130A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4862758A (en) * | 1986-06-06 | 1989-09-05 | J. I. Case Company | Hinge assembly for folding implement frame |
| US4878545A (en) * | 1987-06-15 | 1989-11-07 | Victory Equipment (1983) Limited | Agricultural implement with foldable wing |
| EP0326836A1 (en) * | 1988-02-03 | 1989-08-09 | Klemens Kalverkamp | Header for a combine harvester |
| EP3284330A1 (en) * | 2016-08-19 | 2018-02-21 | Kuhn S.A. | Agricultural machine having a folding assistance device |
| FR3055082A1 (en) * | 2016-08-19 | 2018-02-23 | Kuhn S.A. | AGRICULTURAL MACHINE HAVING A FOLDING SUPPORT DEVICE |
| US10426074B2 (en) | 2016-08-19 | 2019-10-01 | Kuhn S.A. | Agricultural machine having a folding assistance device |
| EP3884766A1 (en) * | 2020-03-25 | 2021-09-29 | CNH Industrial Belgium N.V. | Agricultural implement |
| US11259464B2 (en) | 2020-03-25 | 2022-03-01 | Cnh Industrial America Llc | Locking linkage for folding agricultural implement |
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| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |