CA1138248A - Catch device for use with agricultural equipment - Google Patents
Catch device for use with agricultural equipmentInfo
- Publication number
- CA1138248A CA1138248A CA000353645A CA353645A CA1138248A CA 1138248 A CA1138248 A CA 1138248A CA 000353645 A CA000353645 A CA 000353645A CA 353645 A CA353645 A CA 353645A CA 1138248 A CA1138248 A CA 1138248A
- Authority
- CA
- Canada
- Prior art keywords
- sections
- catch
- locking
- catch device
- link
- 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
- A01B73/044—Folding frames foldable about a horizontal axis the axis being oriented in a longitudinal direction
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
Abstract
Abstract A catch device in agricultural equipment having at least two laterally arranged sections, which are swingable towards each other. Through the action of an operating mechanism, such as a hydraulic cylinder, the catch means not only automatically locks the sections when they are raised to a retracted position but also automatically releases the catch device when the sections are lowered and opened out to an operative position. This is provided by the operating mechanism being connected to a section with the aid of a means which is movable between two stops for allowing the catch device to assume a locking position when the sections are swung towards each other, while the movable means prevents the device from assuming its locking position during the swinging away from each other of the sections, this swinging movement being provided by the operating mechanism.
Description
~ 3~
The prevent inventlon relates to a device intended for use on agricultural equipment for working arable land, such as rollers and harrows, which comprise at least two laterally disposed sections transverse to the direction of travel, which are mutually articulated by means of a ~oint wLth lts axls substantially irl the direction of travel. Such agricultural equipment usually has great width so that it can work over a large area when it is ved over a field, and it is customarily drawn by a tractor. For road transport, such equipment is usually provided with wheels enabling it to be taken along a road and different devices are known for retracting the different sections together to give a lesser width, making transport on roads possible. Mutual retraction of the sections either takes place by hand or, as is more usual today, with the aid of hydrualic cylinders supplied with pressurized oil from the tractor hydraulic system. When the sections have been folded to their retracted position and the hydraulic pressure is cut off, they are prevented from swinging away from each other by a releasable catch means, arranged so that, durlng the last part of the swinging movement towards each other of the sections, it assumes a spring biassed locking position whereby both sections cannot swing away from each other, but are kept in the retracted position.
With a known device of the type described above, the driver of the tractor can retract the sections from the driver's seat, the sections then being automatically locked in the retracted position. On the other hand, when the sections are to be swung out, the driver must release the catch by hand, which means that he must leave the driver's seat. This is naturally a large disadvantage.
An ob~ect of the present invention is to remove this disadvantage and provide a device which both locks the sections when they reach their retracted position, and releases the catch when the sections are to be swung away from each other. Both these operations can be controlled from the -1- $
1~3~
driver's seat and take place completely automatically.
In accordance with one aspect of the invention there is provided in a device for use with agricultural equipment intended for working arable land, which comprises at least two laterally arranged sections transverse to ~he dlrectlon of travel, which are mutually articu]ated at a ~oint havlng its axis substantially in the direction of travel, the sections situated on either side of the joint being disposed for swinging movement relative to each other, under the action of operating means, between an operative position and a retracted locked position, in which the sections are prevented, by means of a releasable catch device, from swinging away from each other;
said catch device assuming a locking position during the last part of the swinging movement of the sections towards each other, the improvement wherein the operating means is connected to one of said sections by link means movable between two stops and activating the catch device; said link means moving to a first position wherein said catch device may assume its locking positi.on as said sections swing toward each other, and moving to a second, free, position, in which said catch device is prevented from locking, as said operating means begins movement for swinging said sections away from each other.
The invention will now be described in detail in con~unction with an embodiment selected as an example and which is illustrated on the accompany-ing drawing, wherein:
Figure 1 illustrates the device in a locking position, with an inset illustrating the position of the vital members in the free position; and Figure 2 illustrates a roller of known type, to which the device according to Figure 1 is fitted.
In Figure 2 there is shown a roller with a middle section provided with transport wheels, the latter being retractable between a down position, when they carry the roller during transport on a road, and an up position retained during the working position of the roller. The roller has a 1~3~
hydraulic cylinder 40'~ the ends of which are each connected to an outer section 20'. When the cylinder is telescoped, it lifts up both outer sections to an upstanding position, where they are locked with the help of a catch device lndicated by 30', thls taking place automatically, as mentioned.
The outer sectlons slope somewhat inwards over the middle section 10' in this positlon.
Figure 1 illustrates the embodiment of a catch device, used for the roller in Figure 2. In the figure, the numeral 10 denotes the section situated on one side of the pivot ~oint and the numeral 20 the section situated on the other side of the joint. The complete catch device is denoted by the numeral 30.
The section 10 includes a beam 11 connected to a bracket 12, at the upper end of which a detent 13 i9 formed. At the top of the detent there is a guide surface 14, disposed obliquely and terminating at a locking tooth 15. A pivot ~oint 16 iB arranged at the right hand portion of the section.
The sectlon 20, arranged on the other slde of the pivot ~oint, includes a beam 21, which carries two brackets 22, 23, each provided with a hole 24, 25 through which a rod 31 moves. A pivot 26 is arranged above the brackets for a moveable member in the form of a link 38.
Apart from the rod 31, which has a chamfered lower end 32, the catch device 30 includes a pin 33 passing through the rod 31, and, via a washer 34, this pin takes up the force from a spring 35 compressed between the washer 34 and bracket 23. A further pin 39 is arranged at the upper end of the rod 31 and constitutes a stop for a sleeve 36, which can slide on the upper part of the rod 31. An operating arm 37 is attached to the sleeve 36, the upper end of the former being pivotally connected to the link 38. The link 38 is connected at it9 outer end, via a pivot 41, to the piston rod 44 in a hydraulic cylinder 40, the other end of which cylinder is connected to a pivot 42 arranged on a bracket 43 on the beam 11 of the section 10.
Figure 1 illustrates the position where the sections 10 and 20 are retracted or swung together with the catch device in the locking positlon, by the end 32 of the rod 31 being lifted upwards by the guide surface 14 during the last part of the swinging movement, over the tooth 15 and behind it. The rod 31 can execute the described movement without hindrance, against the bias of the spring 35, the rod sliding in the holes 24, 25 of the cleats 22, 23 and through the sleeve 36. The æleeve 36 is kept in the posi-tion illustrated in the figure, during the retraction of the sections, bythe operating arm 37 and link 38, which are kept pressed against the stop 42 during retraction, when the hydraulic cylinder 40 lifts the section 20 by tensional force in the piston rod 44, pivot 41 and link 38.
When the sections are to be released from each other, the tractor driver arranges the supply of hydraulic oil to the cylinder 40 90 that the plston rod 44 i~ thrust outwards, i.e. upwards in Pigure 1. The link 38 pivots around the pivot 26 to the positlon 38', illustrated by dashed lines, whereat the link hits the stop 45 and the pivot of the piston rod 44 reaches the position 41'. Via the operating arm 37 the link 38 lifts the sleeve 36 during this movement and thereby the pin 39 and rod 31 a distance which is given by the arrow 48. As is apparent from the inset, left-hand depiction of the rod 31, it goes free from the detent 13 in this position and can pass over the detent.
With continued movement of the cylinder 40 and piston rod 44, the section 20 i8 thrust outwards by the link 38' via the force it exerts against the stop 45. When section 20 has been thrust a small angular distance to the right, it will continue to fall under the action of gravity. The llnk 38 thus moves from the stop 45 to engage instead against the stop 46 by moving from the position 38' to the position 38. The movement of the section 20 can 1~.3l~;~4~3 subsequently continue, fully controlled by the hydraulic cylinder 40 until its travel is terminated.
In the described example, the hydraulic cylinder is arranged between the frame of section 10, which can be the middle section 10' illu~trated in Figure 2. The cylinder can natural]y also be attached as shown in Figure 2, i.e. with the ends each connected to an outer section, which ls then provided with links corresponding to the link 38 in Flgure 1.
The movable means actuating the catch device can be made in many ways already known per se. For example, the piston rod can be provided with an elongate slot for a sliding shaft. The sliding movement can be used for resetting the catch device to the positions where it is respectively either unhindered, or prevented, from assuming its locking position. One skilled in the art can provide many different embodiments of the invention within the scope of the patent claims.
The prevent inventlon relates to a device intended for use on agricultural equipment for working arable land, such as rollers and harrows, which comprise at least two laterally disposed sections transverse to the direction of travel, which are mutually articulated by means of a ~oint wLth lts axls substantially irl the direction of travel. Such agricultural equipment usually has great width so that it can work over a large area when it is ved over a field, and it is customarily drawn by a tractor. For road transport, such equipment is usually provided with wheels enabling it to be taken along a road and different devices are known for retracting the different sections together to give a lesser width, making transport on roads possible. Mutual retraction of the sections either takes place by hand or, as is more usual today, with the aid of hydrualic cylinders supplied with pressurized oil from the tractor hydraulic system. When the sections have been folded to their retracted position and the hydraulic pressure is cut off, they are prevented from swinging away from each other by a releasable catch means, arranged so that, durlng the last part of the swinging movement towards each other of the sections, it assumes a spring biassed locking position whereby both sections cannot swing away from each other, but are kept in the retracted position.
With a known device of the type described above, the driver of the tractor can retract the sections from the driver's seat, the sections then being automatically locked in the retracted position. On the other hand, when the sections are to be swung out, the driver must release the catch by hand, which means that he must leave the driver's seat. This is naturally a large disadvantage.
An ob~ect of the present invention is to remove this disadvantage and provide a device which both locks the sections when they reach their retracted position, and releases the catch when the sections are to be swung away from each other. Both these operations can be controlled from the -1- $
1~3~
driver's seat and take place completely automatically.
In accordance with one aspect of the invention there is provided in a device for use with agricultural equipment intended for working arable land, which comprises at least two laterally arranged sections transverse to ~he dlrectlon of travel, which are mutually articu]ated at a ~oint havlng its axis substantially in the direction of travel, the sections situated on either side of the joint being disposed for swinging movement relative to each other, under the action of operating means, between an operative position and a retracted locked position, in which the sections are prevented, by means of a releasable catch device, from swinging away from each other;
said catch device assuming a locking position during the last part of the swinging movement of the sections towards each other, the improvement wherein the operating means is connected to one of said sections by link means movable between two stops and activating the catch device; said link means moving to a first position wherein said catch device may assume its locking positi.on as said sections swing toward each other, and moving to a second, free, position, in which said catch device is prevented from locking, as said operating means begins movement for swinging said sections away from each other.
The invention will now be described in detail in con~unction with an embodiment selected as an example and which is illustrated on the accompany-ing drawing, wherein:
Figure 1 illustrates the device in a locking position, with an inset illustrating the position of the vital members in the free position; and Figure 2 illustrates a roller of known type, to which the device according to Figure 1 is fitted.
In Figure 2 there is shown a roller with a middle section provided with transport wheels, the latter being retractable between a down position, when they carry the roller during transport on a road, and an up position retained during the working position of the roller. The roller has a 1~3~
hydraulic cylinder 40'~ the ends of which are each connected to an outer section 20'. When the cylinder is telescoped, it lifts up both outer sections to an upstanding position, where they are locked with the help of a catch device lndicated by 30', thls taking place automatically, as mentioned.
The outer sectlons slope somewhat inwards over the middle section 10' in this positlon.
Figure 1 illustrates the embodiment of a catch device, used for the roller in Figure 2. In the figure, the numeral 10 denotes the section situated on one side of the pivot ~oint and the numeral 20 the section situated on the other side of the joint. The complete catch device is denoted by the numeral 30.
The section 10 includes a beam 11 connected to a bracket 12, at the upper end of which a detent 13 i9 formed. At the top of the detent there is a guide surface 14, disposed obliquely and terminating at a locking tooth 15. A pivot ~oint 16 iB arranged at the right hand portion of the section.
The sectlon 20, arranged on the other slde of the pivot ~oint, includes a beam 21, which carries two brackets 22, 23, each provided with a hole 24, 25 through which a rod 31 moves. A pivot 26 is arranged above the brackets for a moveable member in the form of a link 38.
Apart from the rod 31, which has a chamfered lower end 32, the catch device 30 includes a pin 33 passing through the rod 31, and, via a washer 34, this pin takes up the force from a spring 35 compressed between the washer 34 and bracket 23. A further pin 39 is arranged at the upper end of the rod 31 and constitutes a stop for a sleeve 36, which can slide on the upper part of the rod 31. An operating arm 37 is attached to the sleeve 36, the upper end of the former being pivotally connected to the link 38. The link 38 is connected at it9 outer end, via a pivot 41, to the piston rod 44 in a hydraulic cylinder 40, the other end of which cylinder is connected to a pivot 42 arranged on a bracket 43 on the beam 11 of the section 10.
Figure 1 illustrates the position where the sections 10 and 20 are retracted or swung together with the catch device in the locking positlon, by the end 32 of the rod 31 being lifted upwards by the guide surface 14 during the last part of the swinging movement, over the tooth 15 and behind it. The rod 31 can execute the described movement without hindrance, against the bias of the spring 35, the rod sliding in the holes 24, 25 of the cleats 22, 23 and through the sleeve 36. The æleeve 36 is kept in the posi-tion illustrated in the figure, during the retraction of the sections, bythe operating arm 37 and link 38, which are kept pressed against the stop 42 during retraction, when the hydraulic cylinder 40 lifts the section 20 by tensional force in the piston rod 44, pivot 41 and link 38.
When the sections are to be released from each other, the tractor driver arranges the supply of hydraulic oil to the cylinder 40 90 that the plston rod 44 i~ thrust outwards, i.e. upwards in Pigure 1. The link 38 pivots around the pivot 26 to the positlon 38', illustrated by dashed lines, whereat the link hits the stop 45 and the pivot of the piston rod 44 reaches the position 41'. Via the operating arm 37 the link 38 lifts the sleeve 36 during this movement and thereby the pin 39 and rod 31 a distance which is given by the arrow 48. As is apparent from the inset, left-hand depiction of the rod 31, it goes free from the detent 13 in this position and can pass over the detent.
With continued movement of the cylinder 40 and piston rod 44, the section 20 i8 thrust outwards by the link 38' via the force it exerts against the stop 45. When section 20 has been thrust a small angular distance to the right, it will continue to fall under the action of gravity. The llnk 38 thus moves from the stop 45 to engage instead against the stop 46 by moving from the position 38' to the position 38. The movement of the section 20 can 1~.3l~;~4~3 subsequently continue, fully controlled by the hydraulic cylinder 40 until its travel is terminated.
In the described example, the hydraulic cylinder is arranged between the frame of section 10, which can be the middle section 10' illu~trated in Figure 2. The cylinder can natural]y also be attached as shown in Figure 2, i.e. with the ends each connected to an outer section, which ls then provided with links corresponding to the link 38 in Flgure 1.
The movable means actuating the catch device can be made in many ways already known per se. For example, the piston rod can be provided with an elongate slot for a sliding shaft. The sliding movement can be used for resetting the catch device to the positions where it is respectively either unhindered, or prevented, from assuming its locking position. One skilled in the art can provide many different embodiments of the invention within the scope of the patent claims.
Claims (3)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. In a device for use with agricultural equipment intended for working arable land, which comprises at least two laterally arranged sections transverse to the direction of travel, which are mutually articulated at a joint having its axis substantially in the direction of travel, the sections situated on either side of the joint being disposed for swinging movement relative to each other, under the action of operating means, between an operative position and a retracted locked position, in which the sections are prevented, by means of a releasable catch device, from swinging away from each other; said catch device assuming a locking position during the last part of the swinging movement of the sections towards each other, the improve-ment wherein the operating means is connected to one of said sections by link means movable between two stops and activating the catch device; said link means moving to a first position wherein said catch device may assume its locking position as said sections swing toward each other, and moving to a second, free, position, in which said catch device is prevented from locking, as said operating means begins movement for swinging said sections away from each other.
2. A device as claimed in claim 1, wherein said link means is connected to a said section by means of a pivot joint; said link means having a second pivot at its end remote from the pivot joint, said second pivot end of said link being arranged for actuation by said operating means, and wherein said operating means comprises a hydraulic cylinder.
3. A device as claimed in claim 2, wherein the catch device has a locking means in the form of a catch arranged on said section and displace-able by a spring towards the locking position, said catch formed for coaction with a detent formed on an adjacent section, the catch being lifted into the free position when the sections are swung away from each other, by means of a member movable relative to the locking means towards a stop on the locking means the movement of said member being controlled by the link means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7906946 | 1979-08-20 | ||
| SE7906946A SE418139B (en) | 1979-08-20 | 1979-08-20 | AGRICULTURAL EQUIPMENT DEVICE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1138248A true CA1138248A (en) | 1982-12-28 |
Family
ID=20338660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000353645A Expired CA1138248A (en) | 1979-08-20 | 1980-06-06 | Catch device for use with agricultural equipment |
Country Status (6)
| Country | Link |
|---|---|
| CA (1) | CA1138248A (en) |
| DK (1) | DK157110C (en) |
| FR (1) | FR2463570A1 (en) |
| GB (1) | GB2057831B (en) |
| NZ (1) | NZ193986A (en) |
| SE (1) | SE418139B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2163931A (en) * | 1984-08-11 | 1986-03-12 | Daisy D Limited | Improvemenis in farm implements |
| DE3616403A1 (en) * | 1986-05-15 | 1987-11-19 | Niemeyer Gmbh & Co Kg Soehne | Ground-working machine |
| DE3739305A1 (en) * | 1987-11-20 | 1989-06-01 | Claas Saulgau Gmbh | AGRICULTURAL WORKING MACHINE WITH FOLD-UP TOOL CARRIERS |
| EP0422721A1 (en) * | 1989-10-10 | 1991-04-17 | C. van der Lely N.V. | Agricultural implement, in particular a soil cultivating machine |
| US8646543B2 (en) | 2010-05-28 | 2014-02-11 | Cnh Canada, Ltd. | Lockout system for hydraulic valves of an agricultural implement |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1553252A (en) * | 1968-01-19 | 1969-01-10 | ||
| FR2254932A7 (en) * | 1973-12-13 | 1975-07-11 | Faou Sa Ets Jean | Operating system for tractor drawn system - has indirect connection between folding frame and operating ram |
| DE2411489B2 (en) * | 1974-03-11 | 1977-06-30 | An einen Schlepper anbaubares Bodenbearbeitungsgerät Maschinenfabrik Rau oHG, 7315 Weilheim | SOIL TILLING EQUIPMENT TO BE ATTACHED TO A TRACTOR |
| FR2302011A1 (en) * | 1975-02-28 | 1976-09-24 | Liot Ets | Lifting and folding system for wide cultivators - has side sections pivotally mounted and operated by hydraulic jack |
-
1979
- 1979-08-20 SE SE7906946A patent/SE418139B/en not_active IP Right Cessation
-
1980
- 1980-06-02 DK DK236180A patent/DK157110C/en not_active IP Right Cessation
- 1980-06-04 GB GB8018278A patent/GB2057831B/en not_active Expired
- 1980-06-05 FR FR8012536A patent/FR2463570A1/en active Granted
- 1980-06-06 CA CA000353645A patent/CA1138248A/en not_active Expired
- 1980-06-10 NZ NZ19398680A patent/NZ193986A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB2057831B (en) | 1983-01-12 |
| SE7906946L (en) | 1981-02-21 |
| SE418139B (en) | 1981-05-11 |
| NZ193986A (en) | 1983-05-10 |
| DK236180A (en) | 1981-02-21 |
| DK157110B (en) | 1989-11-13 |
| FR2463570B1 (en) | 1983-12-02 |
| DK157110C (en) | 1990-04-16 |
| GB2057831A (en) | 1981-04-08 |
| FR2463570A1 (en) | 1981-02-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |