CA2029931C - Tractor - Google Patents
Tractor Download PDFInfo
- Publication number
- CA2029931C CA2029931C CA 2029931 CA2029931A CA2029931C CA 2029931 C CA2029931 C CA 2029931C CA 2029931 CA2029931 CA 2029931 CA 2029931 A CA2029931 A CA 2029931A CA 2029931 C CA2029931 C CA 2029931C
- Authority
- CA
- Canada
- Prior art keywords
- tractor
- tractor according
- rear frame
- exterior body
- tipping
- 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 - Fee Related
Links
Landscapes
- Body Structure For Vehicles (AREA)
Abstract
The invention concerns a tractor comprising a front frame (1) and a rear frame (5) linked together by a hinge (7) with a vertical pivot and by a power means for the steering of the tractor. In the tractor of the invention, the rear frame (5) consists of an interior body (9) and an exterior body (10) which are telescope-ically movable relative to each other using a power means (8), the exterior body being provided with a tipping device (11) and a power means (12) for the tipping of a platform placed on the tipping device.
Description
TRACTOR
FIEhD OF THE INVENTION
The present invention relates to a tractor or an equivalent vehicle, comprising a front frame which has a pair of wheels, an engine and a control cabin, and a rear frame which has a second pair of wheels, the front and rear frames being linked to each other by a hinge with a vertical pivot and by a power means for the steering of the tractor.
BACKGROUND OF THE INVENTION
At present, there are a large number of various tractors and similar vehicles which are usable for certain purposes in agriculture and forestry but are practically unusable for other purposes. For e~tampls, most vehicles designed for forest work can not be used in farm or garden work, and tractors designed for farm work are ill suited for forest work.
aUMMARY OF THE INVENTION
The object of the pxesent invention is to eliminate the drawbacks referred to. A specific object of the invention is to achieve a tractor or an equi-valent vehicle which can be used for a variety of pur-poses, e.g. for sowing and ploughing work like an ordi-nary tractor, as a light and smart vehicle for moving o~
transporting small loads, and for moving large amounts of goods by a technique replacing the conventional tractor-and~trailer combination.
The tractor of the invention comprises a front frame which is provided with a pair of wheels, an en gine and a control cabin, and a rear frame which has a second pair of wheels. The front and rear frames are linked to each other by a hinge with a vertical pivot and by a suitable power means, e.g. a hydraulic c~lin der, which- i~ used for the steering of the tractor, i.e. the tractor employs frame steering. The rear frame of the tractor of the invention consists of an interior body and an exterior body which are telescopically movable relative to each other using a power means, the length of the rear frame being adjustable within certain limits. The hinge with a vertical pivot is attached to the interior body while the wheels are mounted on the exterior body, which is also provided with a tipping device and a power means for tipping a platform mounted on the tipping device. Thus, when the rear frame is in the retracted position, the tractor of the invention can be used as a normal tractor for farm or forest work, and the front frame can be equipped with suitable imple-ments, and it is also possible to place certain imple-ments on the rear frame. The rear frame can also be used as as a low loader or it can be provided with a ~.5 small platform. When the rear frame is in the extended position it can b~ provided with a long platform and the tractor can be used like a normal tractor with a trailer, but it will be lighter in operation because the unit has one pair of wheels less.
In a,preferred embodiment, the control unit and seat provided in the operator's control cabin are tur-nable through 180°, so that t:he operator ,can always sit facing to the direction of movement regardless of the mode of operation of the tractor.
Tn a preferred embodiment, the platform on the tipping device is linked to the interior body by suit-able pulling means such as wire cables passing from the inner end of the platform over first guides such as rollers mounted on the interior body and second guides such as rollers mounted an the exterior body back t°
the interior body, to which the other ends of the wire cables are fastened. In addition, both ends of the tipping device are preferably provided with suitable guides, e.g. corresponding rollers, so that only two power means, i.e. the tipping power means and the power means for the adjustment of the rear frame extensian, are needed for the tasks of bringing the platform onto the tipping device and moving it away from it again, tipping the platform on the tipping device and adjusting the extension of the rear frame.
As compared to previously known techniques, the tractor of the invention has the advantage that it enables one and the same vehicle to be used for several different purposes in the fields of farming and forest-ry, which is not possible when currently known tractors are used, thus allowing considerable savings to be achieved in investments on machinery.
ERIEF DESCRIPTION OF THE DRAWINGS
In the following, the invention is described in detail by referring to the appended drawings, wherein:
FIG. 1 shows a diagrammatic side view of the °tractor of 7.5 the invention with the frame in the retracted state;
FIG. 2 represents the tractor of fig. 1 with the frame in the extended state; and FIG. 3 illustrates the tractor of fig. 1 in a situation where the platform is being tipped and movad off the tractor.
DESCRIPTION OF THE PREFERRED EMSODTMENT
The vehicle illustrated by the drawings com-prises a front frame 1 provided with a pair of wheels 2, an engine 3 and an operator's control cabin 4 with a coaa°trol unit 14 and a seat lS. In addition, tha tractor comprises a rear fxa~e 5 provided with a second pair of wheels 6, the front and rear frames being linked to eaoh other by a vertical hinge 7 and a suitable power means (not shown) enabling the front and rear frames to be turned in relation to each other in a manner known in itself from various vehicles, i.e. the tractor employs frame steering.
The rear frame 5 consists of an interior body 9 and an exterior body to which are telescopically movable relative to each other using a power means 8, e.g. a hydraulic cylinder, by means of which the length of the rear frame can be adjusted within certain limits, In this two-°part frame 5, the hinge 7 is attached to the interior body 9 while the wheels are mounted on the exterior body 10. In addition, the exterior body 10 is provided with a tipping device 11 turnably mounted on its outer end. The tipping device is operated using a hydraulic cylinder 12 whose one end is connected to the exterior body 10 and the other end to the tipping device 11.
Mounted on the tipping device 11 is a detach-1o able platform 13, the wire cables used as pulling means 1& being detachably attached to each fide of its inner end 23 (only one of the wire cables is shown in the figure). These wire cables run from the platform over first ra7.lers 17 mounted on the inner end 19 of the interior body and second rollers 19 mounted at the fulcrum 20 of the piston rod of cylinder 8 on the ex-terior body back to the interior body 9, 'to which the other ends of the wire cables are fastened. In this embodiment, these other ends of the wire cables extend to the inner end 19 of the interior body 9 and are fastened thereto, but they could as well be fastened to some other point on the interior body. In addition, both ends of the tipping device 11 are provided with corresponding rollers 21, over which the wire cables can freely run when the platform is being moved slang the tipping device.
Moreover, the tractor illustrated in the draw-ings is provided with anchoring elements 22 known fn themselves, e.g. a three-point anchorage, which can hold various agricultural implements such as ploughs, har-rows, sowers, etc.
The frame structure of the invention functions as follows. As illustrated by fig. 2, when the rear frame 5 is in the extended foran, it can carry a long platform body, corresponding to an ordinary tractor with a trailer. When the platform is to be tipped or-removed, the tipping device 11 is raised by means of hydraulic cylinder 12 and simultaneously cylinder 8 is operated to telescope the interior 9 and exterior 10 bodies into each other. The platform, controlled by means of the wire cable 16, will now slide downwards along the tipping device at a speed determined by the rate of retraction of cylinder 8. When the outer end of the platform 13 touches the ground and is supported by it, the tractor is driven forward so that the platform will slide down from the tipping device 11 while the interior and exterior bodies 9,10 telescope into each other, i.e. to the position shown in fig. 1.
T'he wire cables 16 can now be detached from the platform, the inter~.or and exterior bodies 9,10 can be interloclced aid the tractor can be used like a conven-tional agricultural tractor, which practically means that the front frame 1 is turned into a rear frame and the rear frame 5 into a front frame, because the outer end of the front frame l j.s provided with suitable anchoring elements 22 for various implements. Moreover, in this retracted form the re~dr frame 6 can be used to carry smaller loads or varicys suitable implements, such as squirt guns and c~ntaina~~ for plant-protecting agents. When the platf~rm 13 is to be remounted on the tractor, the wire cables 16 are attched to the inner end 23 of the platform and, by operating cylinder 8 only, the exterior body l0,is pushed out,so that it is essentially separated from the anterior body 9. Simul-taneously, the wipe cable 16 will pull the platform into the position shown in fig. 2, whereupon the inter-for arid exterior bodies can be interlocked and the platform can be looked in place.
Tn the above, the invention has been described in detail by referring to one of its preferred struc-tural implementations, but different embodiments of the invention are possible within the scope of the follo~ring claims.
FIEhD OF THE INVENTION
The present invention relates to a tractor or an equivalent vehicle, comprising a front frame which has a pair of wheels, an engine and a control cabin, and a rear frame which has a second pair of wheels, the front and rear frames being linked to each other by a hinge with a vertical pivot and by a power means for the steering of the tractor.
BACKGROUND OF THE INVENTION
At present, there are a large number of various tractors and similar vehicles which are usable for certain purposes in agriculture and forestry but are practically unusable for other purposes. For e~tampls, most vehicles designed for forest work can not be used in farm or garden work, and tractors designed for farm work are ill suited for forest work.
aUMMARY OF THE INVENTION
The object of the pxesent invention is to eliminate the drawbacks referred to. A specific object of the invention is to achieve a tractor or an equi-valent vehicle which can be used for a variety of pur-poses, e.g. for sowing and ploughing work like an ordi-nary tractor, as a light and smart vehicle for moving o~
transporting small loads, and for moving large amounts of goods by a technique replacing the conventional tractor-and~trailer combination.
The tractor of the invention comprises a front frame which is provided with a pair of wheels, an en gine and a control cabin, and a rear frame which has a second pair of wheels. The front and rear frames are linked to each other by a hinge with a vertical pivot and by a suitable power means, e.g. a hydraulic c~lin der, which- i~ used for the steering of the tractor, i.e. the tractor employs frame steering. The rear frame of the tractor of the invention consists of an interior body and an exterior body which are telescopically movable relative to each other using a power means, the length of the rear frame being adjustable within certain limits. The hinge with a vertical pivot is attached to the interior body while the wheels are mounted on the exterior body, which is also provided with a tipping device and a power means for tipping a platform mounted on the tipping device. Thus, when the rear frame is in the retracted position, the tractor of the invention can be used as a normal tractor for farm or forest work, and the front frame can be equipped with suitable imple-ments, and it is also possible to place certain imple-ments on the rear frame. The rear frame can also be used as as a low loader or it can be provided with a ~.5 small platform. When the rear frame is in the extended position it can b~ provided with a long platform and the tractor can be used like a normal tractor with a trailer, but it will be lighter in operation because the unit has one pair of wheels less.
In a,preferred embodiment, the control unit and seat provided in the operator's control cabin are tur-nable through 180°, so that t:he operator ,can always sit facing to the direction of movement regardless of the mode of operation of the tractor.
Tn a preferred embodiment, the platform on the tipping device is linked to the interior body by suit-able pulling means such as wire cables passing from the inner end of the platform over first guides such as rollers mounted on the interior body and second guides such as rollers mounted an the exterior body back t°
the interior body, to which the other ends of the wire cables are fastened. In addition, both ends of the tipping device are preferably provided with suitable guides, e.g. corresponding rollers, so that only two power means, i.e. the tipping power means and the power means for the adjustment of the rear frame extensian, are needed for the tasks of bringing the platform onto the tipping device and moving it away from it again, tipping the platform on the tipping device and adjusting the extension of the rear frame.
As compared to previously known techniques, the tractor of the invention has the advantage that it enables one and the same vehicle to be used for several different purposes in the fields of farming and forest-ry, which is not possible when currently known tractors are used, thus allowing considerable savings to be achieved in investments on machinery.
ERIEF DESCRIPTION OF THE DRAWINGS
In the following, the invention is described in detail by referring to the appended drawings, wherein:
FIG. 1 shows a diagrammatic side view of the °tractor of 7.5 the invention with the frame in the retracted state;
FIG. 2 represents the tractor of fig. 1 with the frame in the extended state; and FIG. 3 illustrates the tractor of fig. 1 in a situation where the platform is being tipped and movad off the tractor.
DESCRIPTION OF THE PREFERRED EMSODTMENT
The vehicle illustrated by the drawings com-prises a front frame 1 provided with a pair of wheels 2, an engine 3 and an operator's control cabin 4 with a coaa°trol unit 14 and a seat lS. In addition, tha tractor comprises a rear fxa~e 5 provided with a second pair of wheels 6, the front and rear frames being linked to eaoh other by a vertical hinge 7 and a suitable power means (not shown) enabling the front and rear frames to be turned in relation to each other in a manner known in itself from various vehicles, i.e. the tractor employs frame steering.
The rear frame 5 consists of an interior body 9 and an exterior body to which are telescopically movable relative to each other using a power means 8, e.g. a hydraulic cylinder, by means of which the length of the rear frame can be adjusted within certain limits, In this two-°part frame 5, the hinge 7 is attached to the interior body 9 while the wheels are mounted on the exterior body 10. In addition, the exterior body 10 is provided with a tipping device 11 turnably mounted on its outer end. The tipping device is operated using a hydraulic cylinder 12 whose one end is connected to the exterior body 10 and the other end to the tipping device 11.
Mounted on the tipping device 11 is a detach-1o able platform 13, the wire cables used as pulling means 1& being detachably attached to each fide of its inner end 23 (only one of the wire cables is shown in the figure). These wire cables run from the platform over first ra7.lers 17 mounted on the inner end 19 of the interior body and second rollers 19 mounted at the fulcrum 20 of the piston rod of cylinder 8 on the ex-terior body back to the interior body 9, 'to which the other ends of the wire cables are fastened. In this embodiment, these other ends of the wire cables extend to the inner end 19 of the interior body 9 and are fastened thereto, but they could as well be fastened to some other point on the interior body. In addition, both ends of the tipping device 11 are provided with corresponding rollers 21, over which the wire cables can freely run when the platform is being moved slang the tipping device.
Moreover, the tractor illustrated in the draw-ings is provided with anchoring elements 22 known fn themselves, e.g. a three-point anchorage, which can hold various agricultural implements such as ploughs, har-rows, sowers, etc.
The frame structure of the invention functions as follows. As illustrated by fig. 2, when the rear frame 5 is in the extended foran, it can carry a long platform body, corresponding to an ordinary tractor with a trailer. When the platform is to be tipped or-removed, the tipping device 11 is raised by means of hydraulic cylinder 12 and simultaneously cylinder 8 is operated to telescope the interior 9 and exterior 10 bodies into each other. The platform, controlled by means of the wire cable 16, will now slide downwards along the tipping device at a speed determined by the rate of retraction of cylinder 8. When the outer end of the platform 13 touches the ground and is supported by it, the tractor is driven forward so that the platform will slide down from the tipping device 11 while the interior and exterior bodies 9,10 telescope into each other, i.e. to the position shown in fig. 1.
T'he wire cables 16 can now be detached from the platform, the inter~.or and exterior bodies 9,10 can be interloclced aid the tractor can be used like a conven-tional agricultural tractor, which practically means that the front frame 1 is turned into a rear frame and the rear frame 5 into a front frame, because the outer end of the front frame l j.s provided with suitable anchoring elements 22 for various implements. Moreover, in this retracted form the re~dr frame 6 can be used to carry smaller loads or varicys suitable implements, such as squirt guns and c~ntaina~~ for plant-protecting agents. When the platf~rm 13 is to be remounted on the tractor, the wire cables 16 are attched to the inner end 23 of the platform and, by operating cylinder 8 only, the exterior body l0,is pushed out,so that it is essentially separated from the anterior body 9. Simul-taneously, the wipe cable 16 will pull the platform into the position shown in fig. 2, whereupon the inter-for arid exterior bodies can be interlocked and the platform can be looked in place.
Tn the above, the invention has been described in detail by referring to one of its preferred struc-tural implementations, but different embodiments of the invention are possible within the scope of the follo~ring claims.
Claims (10)
1. Tractor comprising a front frame which has a first pair of wheels, an engine and an operator's control cabin, and a rear frame which has a second pair of wheels, the front and rear frames being linked to each other by a hinge with a vertical pivot and by a steering power means for the steering of the tractor, wherein the rear frame consists of an interior body and an exterior body which are telescopically movable relative to each other using a sliding power means, the hinge being attached to the interior body while the second pair of wheels are mounted to the exterior body, the exterior body being provided with a tipping device having opposing ends and a tipping power means for tipping a platform body placed on the tipping device, the platform body being connected to the interior body by flexible pulling means passing over a first guide mounted on the interior body and a second guide mounted on the exterior body.
2. Tractor according to claim 1 wherein the control unit together with the seat in the operator's control cabin is turnable through at least 180À about the vertical axis.
3. Tractor according to claim 1 wherein the power means is a hydraulic cylinder-and-piston unit attached to the interior body and the exterior body.
4. Tractor according to claim 1 wherein the flexible pulling means are wire cables.
5. Tractor according to claim 1 wherein the first guide is a roller mounted on the inner end of the interior body.
6. Tractor according to claim 3 wherein the cylinder and piston unit is attached to the exterior body at a fulcrum and the second guide is a roller mounted near the fulcrum.
7. Tractor according to claim 4 wherein both ends of the tipping device are provided with roller guides on which the pulling means can run when the platform body is moved in relation to the tipping device.
8. Tractor according to claim 1 wherein the rear frame is provided with locking means for the interlocking of the interior body and the exterior body.
9. Tractor according to claim 1 wherein the rear frame is provided with a locking device for locking the platform body in position on the rear frame.
10. Tractor according to claim 1 wherein the front frame is provided with anchoring elements for the attachment of implements to the front frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2029931 CA2029931C (en) | 1990-11-14 | 1990-11-14 | Tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2029931 CA2029931C (en) | 1990-11-14 | 1990-11-14 | Tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2029931A1 CA2029931A1 (en) | 1992-05-15 |
| CA2029931C true CA2029931C (en) | 2002-02-26 |
Family
ID=4146424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2029931 Expired - Fee Related CA2029931C (en) | 1990-11-14 | 1990-11-14 | Tractor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2029931C (en) |
-
1990
- 1990-11-14 CA CA 2029931 patent/CA2029931C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2029931A1 (en) | 1992-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1231578A (en) | Forwardly-folding agricultural implement | |
| US7849932B2 (en) | Steering and elevating wheel system for agricultural implement | |
| US5493853A (en) | Draw bar bifold hay rake | |
| EP0006900B1 (en) | Tractor | |
| DE1966712A1 (en) | DEVICE SET | |
| DE69909389D1 (en) | Vehicle can be used like a hoist or a tractor | |
| US4213628A (en) | Pulling hitch for agricultural implements | |
| US4457127A (en) | Mower | |
| US5823270A (en) | Steerable implement hitch | |
| US5088876A (en) | Articulated tractor-trailer having adjustable trailer length and a tippable platform | |
| CA2029931C (en) | Tractor | |
| US2599617A (en) | Draw bar control | |
| US5129463A (en) | Conservation tillage implement convertible for end transport | |
| US2477994A (en) | Implement hitch for tractors | |
| GB2361673A (en) | Agricultural machine or vehicle with rail mounted cabin | |
| EP0905008B1 (en) | Carrier vehicle | |
| KR101784115B1 (en) | Weight balance control apparatus | |
| US3851895A (en) | Drawbar steering attachment for articulated tractors | |
| RU2131817C1 (en) | Crawler carrier | |
| US3576227A (en) | Attachment device for an agricultural machine | |
| ITUD20060024A1 (en) | FARM TRACTOR | |
| DE2641309A1 (en) | Cable laying vehicle for difficult terrain - has independently operated wheels mounted on hinged arms and driven by hydraulic motors | |
| US2664804A (en) | Tractor drawbar support | |
| SU795989A1 (en) | Steep-slope tractor with aggregated agricultural implement | |
| JPS5819974Y2 (en) | Harvester that can be used as a transport vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |