CA2275152A1 - Land leveller - Google Patents
Land leveller Download PDFInfo
- Publication number
- CA2275152A1 CA2275152A1 CA 2275152 CA2275152A CA2275152A1 CA 2275152 A1 CA2275152 A1 CA 2275152A1 CA 2275152 CA2275152 CA 2275152 CA 2275152 A CA2275152 A CA 2275152A CA 2275152 A1 CA2275152 A1 CA 2275152A1
- Authority
- CA
- Canada
- Prior art keywords
- frame
- blades
- land leveller
- hitch
- floating elements
- 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.)
- Abandoned
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
- A01B31/00—Drags graders for field cultivators
-
- 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
- A01B13/00—Ploughs or like machines for special purposes ; Ditch diggers, trench ploughs, forestry ploughs, ploughs for land or marsh reclamation
- A01B13/16—Machines for combating erosion, e.g. basin-diggers, furrow-dammers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Agricultural Machines (AREA)
Abstract
A land leveller is provided for levelling earth as it is towed by a towing vehicle. The land leveller includes a frame having a hitch mounted on a forward end for connection to the vehicle. A plurality of wheels support the frame for movement in a forward or rearward direction. The frame includes a pair of floating elements pivotally mounted thereon. Each floating element supports a blade thereon such that the blades are laterally spaced apart on the frame and extend transversely to the forward direction. The blades are free to pivot upward and downward with the respective floating elements about respective longitudinal axes extending parallel to the forward direction. A pair of adjustable mounts mount the respective blades on the floating elements such that a vertical and horizontal spacing of each blade relative to the frame is adjustable. The adjustable mounts each include a shaft having an upright axis for pivotal movement of the blades about the respective upright axes such that an angle between the blades and the forward direction is adjustable.
Description
LAND LEVELLER
FIELD OF THE INVENTION
This invention relates to a land levelling implement for levelling earth as it is towed by a towing vehicle.
BACKGROUND
The use of V shaped ditches for drainage and irrigation is a common agricultural practice. Before seeding a new crop, these ditches are usually filled in, using a land leveller which is commonly a blade mounted on a frame towed behind a tractor. The known levellers require multiple passes to fill a single ditch and are generally not adjustable to accommodate variations in the ditch profile and terrain.
The present invention provides certain improvements in land levellers.
SUMMARY
According to one aspect of the present invention there is provided a land leveller arranged to be towed by a vehicle for levelling earth, the land leveller comprising:
a frame;
a plurality of wheels supporting the frame for movement in a direction of travel;
a hitch mounted on a forward end of the frame for connecting to the vehicle;
a pair of blades mounted laterally spaced apart on the frame, each blade having a contact edge extending transversely to the direction of travel for engaging the earth; and pivotal mounting means mounting the blades on the frame for pivotal movement about respective upright axes such that an angle between the contact edge of each blade and the direction of travel is adjustable.
FIELD OF THE INVENTION
This invention relates to a land levelling implement for levelling earth as it is towed by a towing vehicle.
BACKGROUND
The use of V shaped ditches for drainage and irrigation is a common agricultural practice. Before seeding a new crop, these ditches are usually filled in, using a land leveller which is commonly a blade mounted on a frame towed behind a tractor. The known levellers require multiple passes to fill a single ditch and are generally not adjustable to accommodate variations in the ditch profile and terrain.
The present invention provides certain improvements in land levellers.
SUMMARY
According to one aspect of the present invention there is provided a land leveller arranged to be towed by a vehicle for levelling earth, the land leveller comprising:
a frame;
a plurality of wheels supporting the frame for movement in a direction of travel;
a hitch mounted on a forward end of the frame for connecting to the vehicle;
a pair of blades mounted laterally spaced apart on the frame, each blade having a contact edge extending transversely to the direction of travel for engaging the earth; and pivotal mounting means mounting the blades on the frame for pivotal movement about respective upright axes such that an angle between the contact edge of each blade and the direction of travel is adjustable.
Adjustment of the relative orientation of the pair of blades allows various different tasks to be performed. When the blades are oriented to extend inward and rearward from respective outer ends toward respective inner ends, the leveller can be towed along a ditch such that each blade follows an opposite ridge of a ditch for filling the ditch in a single pass.
The frame preferably comprises a hitch member mounting the hitch thereon, a pair of floating elements mounted on the hitch member for independent upward and downward deflections relative to the hitch members and a ground support for supporting the floating elements above the ground, the blades being mounted on the respective floating elements for movement therewith. This allows the blades to follow the ground contours as the blades engage the ground and the floating elements are deflected in response to the changes in elevation of the ground.
The plurality of wheels are preferably mounted on a rearward end of the floating elements for deflecting the floating elements in response to irregularities in the ground.
The floating elements may be pivotally mounted on the hitch member for pivotal movement about respective longitudinal axes being parallel to the direction of travel.
Preferably there is provided securing means for securing the blades at various positions, each corresponding to a different relative angle between the blade and the direction of travel. The securing means may comprise a pair of locking members mounted on the frame and arranged to engage the respective blades in a locked position.
There may be provided hitch mounting means for mounting the hitch on the frame at numerous vertical spacings between the hitch and the frame.
There may be provided wheel mounting means for mounting the wheels on the frame at numerous vertical spacings between the wheels and the frame for adjusting a height of the blades relative to the ground. The wheel mounting means may comprise a pair of wheel support frames mounting the wheels thereon, the wheel support frame being pivotally mounted on the frame for upward and downward deflections relative to the frame. A hydraulic actuator is preferably provided for controlling the height of the wheels relative to the frame.
There may be provided lateral blade adjustment means for mounting the blades on the frame at various laterally spaced positions on the frame.
There may additionally be provided numerous blades of different sizes, each blade being arranged to selectively mount on the frame for different applications.
According to a further aspect of the present invention there is provided a land leveller arranged to be towed by a vehicle for levelling earth, the land leveller comprising:
a frame having a hitch member and a pair of floating elements mounted on the hitch member for independent upward and downward deflections of the floating elements relative to the hitch member;
a plurality of wheels supporting the frame for movement in a direction of travel;
a hitch mounted on a forward end of the hitch member for connecting to the vehicle; and a pair of blades mounted on the respective floating elements for movement therewith, the blades being oriented to extend inward and rearward from respective outer ends toward respective inner ends, the inner ends being spaced apart.
This allows the blades to follow the ground contours as the blades engage the ground and the floating elements are deflected in response to the changes in elevation of the ground. The blades are able to follow opposing slopes of a V shaped ditch for digging a ditch or follow opposing ridges of a V shaped ditch for filling the ditch.
The plurality of wheels are preferably mounted on a rearward end of the floating elements for deflecting the floating elements in response to irregularities in the ground.
Preferably the floating elements are pivotally mounted on the hitch member for pivotal movement about respective longitudinal axes being parallel to the direction of travel.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is an isometric view of the land leveller connected to the hitch of a towing vehicle.
Figure 2 is a top plan view of the land leveller.
Figure 3 is a side elevational view of the land leveller.
Figure 4 is a front elevational view of the land leveller.
Figure 5 is a top plan view of various blade orientations of the land leveller in relation to the direction of travel.
DETAILED DESCRIPTION
Referring to the accompanying drawings, there is illustrated a land leveller generally indicated by reference numeral 10. The land leveller 10 is arranged to level earth when connected to a hitch 12 of a towing vehicle which is not shown.
The leveller 10 includes a frame 14 having a hitch member 16 and a pair of floating elements 18 mounted thereon. The hitch member 16 is an elongate beam supported for movement in a forward direction indicated by arrow 20 or rearward direction opposite to the forward direction. An adjustable hitch 22 mounts on a forward end 24 of the hitch member for connecting to the hitch 12 of the towing vehicle. The adjustable hitch 22 includes an engaging member 26 for engaging the towing vehicle and a plurality of mounting locations 28 for mounting the engaging member thereon. Each mounting location 28 corresponds to a different vertical spacing between the engaging member and the hitch member for accommodating different types of towing vehicles and different desired frame heights from the ground.
The floating elements 18 are pivotally mounted on respective sides of the hitch member 16 to extend laterally outward therefrom. A pair of pivots 30 are mounted spaced apart on each side of the hitch member for mounting a corresponding one of the floating elements thereon such that the floating elements are pivotal about respective longitudinal axes extending through the respective pairs of pivots 30 and parallel to the forward direction 20.
The floating elements 18 each comprise an inner member 32 adjacent to and parallel to the hitch member and an outer member 34 spaced laterally outward from and parallel to the hitch member. A plurality of cross members 36 extend between the inner and outer members of each floating element. Additional bracing members 38 connect between the cross members for additional support.
A forward cross member 39 on each floating element 18 is at an incline to extend rearv~rard and outward from an inner end mounted on the corresponding inner member 32 to an outer end mounted on the corresponding outer member 34.
A
forward one of each pair of pivots 30 mounting the floating elements 18 thereon is adjacent the forward end of the hitch member. The forward location of the forward pivots 30 and the incline of the forward cross members 39 reduces the magnitude of the moments acting on the pivots 30.
An adjustable mount 40 is mounted on each floating element 18 on a corresponding pair of the cross members 36. Each adjustable mount 40 mounts a scraper blade 42 thereon. The scraper blades 42 are elongate plates having a concave forward face 43 and a contact edge 44 along a bottom end for engaging the earth.
The adjustable mounts 40 are mounted on the cross members 36 by a plurality of U-shaped bolts extending around the members and being secured at respective ends by fasteners. Loosening the fasteners permits the adjustable mounts 40 to be slid laterally inward and outward along the cross members 36 for positioning the blades on their respective floating elements at various lateral spacings from the hitch member. Tightening the fasteners will secure the corresponding adjustable mount 40 at the desired location.
The adjustable mounts 40 each include a shaft 46 having a generally upright axis. The blades 42 are mounted on the respective shafts 46 for pivotal movement about the respective upright axes. The pivotal movement of the blades about the respective upright axes allow the blades to be positioned at numerous angles facing forward or rearward. A locking plate 48 is mounted about each shaft 46 and includes a plurality of apertures therein for receiving a locking member therethrough. The locking member 50 engages one of the apertures and the corresponding adjustable mount 40 for restricting pivotal movement of the blade.
Each aperture in the locking plate 48 corresponds to a different relative angle between the hitch member and the contact edge 44 of the corresponding blade.
Numerous blades 42 of different sizes are provided, each being arranged to selectively mount on the shafts 46 for accomplishing different tasks with the land leveller.
A wheel support frame 52 mounts on a rearward end 54 of each floating element 18. A pair of pivots 56 are mounted on a corresponding cross member 36 at _7_ the rearward end 54 of each floating element for pivotally mounting the corresponding wheel support frame thereon. Each wheel support frame includes a connecting member 58 mounted across each pair of pivots 56 and a pair of arms 60 extending generally downward and rearward from the connecting member. The arms 60 are parallel and spaced apart on their respective connecting members 58 being supported by additional bracing members 61. A wheel 62 is mounted on a free end of each arm 60 for supporting the frame for movement across the ground in the forward or rearward direction.
A crank 64 is mounted on each connecting member 58. A hydraulic piston cylinder 66 pivotally mounts at a piston end on each crank 64 and mounts at a cylinder end on one of the bracing members 38 of a corresponding one of the floating elements. Contraction and extension of the hydraulic piston cylinders 66 will pivot the wheel support frames about their respective pivots 56 for adjusting a vertical spacing of the wheels in relation to the respective floating elements of the frame.
In operation, the blade angles and location of the blades are first adjusted to any desired position. Adjustment of the hitch and wheel supports will then adjust the height of the blades relative to the ground for selecting the depth of cut of the blades into the ground. As the leveller 10, is towed across the ground, the wheels on each floating element roll over irregularities in the ground height for deflecting the corresponding floating element and blade mounted thereon upward and downward with the elevation of the terrain. Each floating element is also arranged to follow the inclination of the terrain as the floating elements pivot about respective longitudinal axes extending through the pivots 30.
Adjustment of the blade angle and location of the blades are selected depending on the desired task. As illustrated in Figure 2, the blades can be oriented in a ditch filling position. In the ditch filling position, the blades form a V-shape with _ $ -the apex pointed rearward. The inner ends of the respective blades are spaced from each other. The leveller is then pulled longitudinally along the ditch with each blade being aligned with one of the banks of the ditch for filling the ditch with earth in a single pass.
The orientation of the blades when filling both sides of a ditch while pulling the land leveller behind a towing vehicle, is shown in Figure 5a. The angle of the blades are shown in a V-shape with the apex extending rearward in relation to the forward direction 20.
As shown in Figure 5b, the blades can also be oriented in a V-shape with the apex extending forward and the inner ends of the respective blades being located adjacent each other. In this orientation, the blades will plough a ditch when pulled across the ground in the forward direction 20.
As shown in Figure 5c, the blades can be positioned parallel to each other and co-linear with the inner ends located adjacent to each other, for use as a single bladed scraper.
In Figure 5d, the blades are shown parallel and at an angle to the forward direction with the inner ends of the blades overlapping each other.
This arrangement is useful for moving earth in a single direction. In the previous arrangements the forward faces 43 of the blades are oriented to face forward and the leveller is arranged to be pulled in the forward direction.
Alternatively, the blades can be positioned as shown in Figure 5e with the forward face 43 of each blade facing rearward. In this manner, the leveller can be pushed by the towing vehicle in a rearward direction 68 opposite to the forward direction 20. This is particularly useful in areas where the ground is too wet for a towing vehicle to pass over or if it is dangerous for the vehicle to be located ahead of the leveller.
_g_ In an alternative arrangement, the blades can be mounted on the frame with hydraulic actuators controlling the depth of cut of the blades as well as the inclination of the blades in relation to the forward direction.
While one embodiment of the present invention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. The invention is to be considered limited solely by the scope of the appended claims.
The frame preferably comprises a hitch member mounting the hitch thereon, a pair of floating elements mounted on the hitch member for independent upward and downward deflections relative to the hitch members and a ground support for supporting the floating elements above the ground, the blades being mounted on the respective floating elements for movement therewith. This allows the blades to follow the ground contours as the blades engage the ground and the floating elements are deflected in response to the changes in elevation of the ground.
The plurality of wheels are preferably mounted on a rearward end of the floating elements for deflecting the floating elements in response to irregularities in the ground.
The floating elements may be pivotally mounted on the hitch member for pivotal movement about respective longitudinal axes being parallel to the direction of travel.
Preferably there is provided securing means for securing the blades at various positions, each corresponding to a different relative angle between the blade and the direction of travel. The securing means may comprise a pair of locking members mounted on the frame and arranged to engage the respective blades in a locked position.
There may be provided hitch mounting means for mounting the hitch on the frame at numerous vertical spacings between the hitch and the frame.
There may be provided wheel mounting means for mounting the wheels on the frame at numerous vertical spacings between the wheels and the frame for adjusting a height of the blades relative to the ground. The wheel mounting means may comprise a pair of wheel support frames mounting the wheels thereon, the wheel support frame being pivotally mounted on the frame for upward and downward deflections relative to the frame. A hydraulic actuator is preferably provided for controlling the height of the wheels relative to the frame.
There may be provided lateral blade adjustment means for mounting the blades on the frame at various laterally spaced positions on the frame.
There may additionally be provided numerous blades of different sizes, each blade being arranged to selectively mount on the frame for different applications.
According to a further aspect of the present invention there is provided a land leveller arranged to be towed by a vehicle for levelling earth, the land leveller comprising:
a frame having a hitch member and a pair of floating elements mounted on the hitch member for independent upward and downward deflections of the floating elements relative to the hitch member;
a plurality of wheels supporting the frame for movement in a direction of travel;
a hitch mounted on a forward end of the hitch member for connecting to the vehicle; and a pair of blades mounted on the respective floating elements for movement therewith, the blades being oriented to extend inward and rearward from respective outer ends toward respective inner ends, the inner ends being spaced apart.
This allows the blades to follow the ground contours as the blades engage the ground and the floating elements are deflected in response to the changes in elevation of the ground. The blades are able to follow opposing slopes of a V shaped ditch for digging a ditch or follow opposing ridges of a V shaped ditch for filling the ditch.
The plurality of wheels are preferably mounted on a rearward end of the floating elements for deflecting the floating elements in response to irregularities in the ground.
Preferably the floating elements are pivotally mounted on the hitch member for pivotal movement about respective longitudinal axes being parallel to the direction of travel.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, which illustrate an exemplary embodiment of the present invention:
Figure 1 is an isometric view of the land leveller connected to the hitch of a towing vehicle.
Figure 2 is a top plan view of the land leveller.
Figure 3 is a side elevational view of the land leveller.
Figure 4 is a front elevational view of the land leveller.
Figure 5 is a top plan view of various blade orientations of the land leveller in relation to the direction of travel.
DETAILED DESCRIPTION
Referring to the accompanying drawings, there is illustrated a land leveller generally indicated by reference numeral 10. The land leveller 10 is arranged to level earth when connected to a hitch 12 of a towing vehicle which is not shown.
The leveller 10 includes a frame 14 having a hitch member 16 and a pair of floating elements 18 mounted thereon. The hitch member 16 is an elongate beam supported for movement in a forward direction indicated by arrow 20 or rearward direction opposite to the forward direction. An adjustable hitch 22 mounts on a forward end 24 of the hitch member for connecting to the hitch 12 of the towing vehicle. The adjustable hitch 22 includes an engaging member 26 for engaging the towing vehicle and a plurality of mounting locations 28 for mounting the engaging member thereon. Each mounting location 28 corresponds to a different vertical spacing between the engaging member and the hitch member for accommodating different types of towing vehicles and different desired frame heights from the ground.
The floating elements 18 are pivotally mounted on respective sides of the hitch member 16 to extend laterally outward therefrom. A pair of pivots 30 are mounted spaced apart on each side of the hitch member for mounting a corresponding one of the floating elements thereon such that the floating elements are pivotal about respective longitudinal axes extending through the respective pairs of pivots 30 and parallel to the forward direction 20.
The floating elements 18 each comprise an inner member 32 adjacent to and parallel to the hitch member and an outer member 34 spaced laterally outward from and parallel to the hitch member. A plurality of cross members 36 extend between the inner and outer members of each floating element. Additional bracing members 38 connect between the cross members for additional support.
A forward cross member 39 on each floating element 18 is at an incline to extend rearv~rard and outward from an inner end mounted on the corresponding inner member 32 to an outer end mounted on the corresponding outer member 34.
A
forward one of each pair of pivots 30 mounting the floating elements 18 thereon is adjacent the forward end of the hitch member. The forward location of the forward pivots 30 and the incline of the forward cross members 39 reduces the magnitude of the moments acting on the pivots 30.
An adjustable mount 40 is mounted on each floating element 18 on a corresponding pair of the cross members 36. Each adjustable mount 40 mounts a scraper blade 42 thereon. The scraper blades 42 are elongate plates having a concave forward face 43 and a contact edge 44 along a bottom end for engaging the earth.
The adjustable mounts 40 are mounted on the cross members 36 by a plurality of U-shaped bolts extending around the members and being secured at respective ends by fasteners. Loosening the fasteners permits the adjustable mounts 40 to be slid laterally inward and outward along the cross members 36 for positioning the blades on their respective floating elements at various lateral spacings from the hitch member. Tightening the fasteners will secure the corresponding adjustable mount 40 at the desired location.
The adjustable mounts 40 each include a shaft 46 having a generally upright axis. The blades 42 are mounted on the respective shafts 46 for pivotal movement about the respective upright axes. The pivotal movement of the blades about the respective upright axes allow the blades to be positioned at numerous angles facing forward or rearward. A locking plate 48 is mounted about each shaft 46 and includes a plurality of apertures therein for receiving a locking member therethrough. The locking member 50 engages one of the apertures and the corresponding adjustable mount 40 for restricting pivotal movement of the blade.
Each aperture in the locking plate 48 corresponds to a different relative angle between the hitch member and the contact edge 44 of the corresponding blade.
Numerous blades 42 of different sizes are provided, each being arranged to selectively mount on the shafts 46 for accomplishing different tasks with the land leveller.
A wheel support frame 52 mounts on a rearward end 54 of each floating element 18. A pair of pivots 56 are mounted on a corresponding cross member 36 at _7_ the rearward end 54 of each floating element for pivotally mounting the corresponding wheel support frame thereon. Each wheel support frame includes a connecting member 58 mounted across each pair of pivots 56 and a pair of arms 60 extending generally downward and rearward from the connecting member. The arms 60 are parallel and spaced apart on their respective connecting members 58 being supported by additional bracing members 61. A wheel 62 is mounted on a free end of each arm 60 for supporting the frame for movement across the ground in the forward or rearward direction.
A crank 64 is mounted on each connecting member 58. A hydraulic piston cylinder 66 pivotally mounts at a piston end on each crank 64 and mounts at a cylinder end on one of the bracing members 38 of a corresponding one of the floating elements. Contraction and extension of the hydraulic piston cylinders 66 will pivot the wheel support frames about their respective pivots 56 for adjusting a vertical spacing of the wheels in relation to the respective floating elements of the frame.
In operation, the blade angles and location of the blades are first adjusted to any desired position. Adjustment of the hitch and wheel supports will then adjust the height of the blades relative to the ground for selecting the depth of cut of the blades into the ground. As the leveller 10, is towed across the ground, the wheels on each floating element roll over irregularities in the ground height for deflecting the corresponding floating element and blade mounted thereon upward and downward with the elevation of the terrain. Each floating element is also arranged to follow the inclination of the terrain as the floating elements pivot about respective longitudinal axes extending through the pivots 30.
Adjustment of the blade angle and location of the blades are selected depending on the desired task. As illustrated in Figure 2, the blades can be oriented in a ditch filling position. In the ditch filling position, the blades form a V-shape with _ $ -the apex pointed rearward. The inner ends of the respective blades are spaced from each other. The leveller is then pulled longitudinally along the ditch with each blade being aligned with one of the banks of the ditch for filling the ditch with earth in a single pass.
The orientation of the blades when filling both sides of a ditch while pulling the land leveller behind a towing vehicle, is shown in Figure 5a. The angle of the blades are shown in a V-shape with the apex extending rearward in relation to the forward direction 20.
As shown in Figure 5b, the blades can also be oriented in a V-shape with the apex extending forward and the inner ends of the respective blades being located adjacent each other. In this orientation, the blades will plough a ditch when pulled across the ground in the forward direction 20.
As shown in Figure 5c, the blades can be positioned parallel to each other and co-linear with the inner ends located adjacent to each other, for use as a single bladed scraper.
In Figure 5d, the blades are shown parallel and at an angle to the forward direction with the inner ends of the blades overlapping each other.
This arrangement is useful for moving earth in a single direction. In the previous arrangements the forward faces 43 of the blades are oriented to face forward and the leveller is arranged to be pulled in the forward direction.
Alternatively, the blades can be positioned as shown in Figure 5e with the forward face 43 of each blade facing rearward. In this manner, the leveller can be pushed by the towing vehicle in a rearward direction 68 opposite to the forward direction 20. This is particularly useful in areas where the ground is too wet for a towing vehicle to pass over or if it is dangerous for the vehicle to be located ahead of the leveller.
_g_ In an alternative arrangement, the blades can be mounted on the frame with hydraulic actuators controlling the depth of cut of the blades as well as the inclination of the blades in relation to the forward direction.
While one embodiment of the present invention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. The invention is to be considered limited solely by the scope of the appended claims.
Claims (20)
1. A land leveller arranged to be towed by a vehicle for levelling earth, the land leveller comprising:
a frame;
a plurality of wheels supporting the frame for movement in a forward direction;
a hitch mounted on a forward end of the frame for connecting to the vehicle;
a pair of blades mounted laterally spaced apart on the frame, each blade having a contact edge extending transversely to the forward direction for engaging the earth; and pivotal mounting means mounting the blades on the frame for pivotal movement about respective upright axes such that an angle between the contact edge of each blade and the forward direction is adjustable.
a frame;
a plurality of wheels supporting the frame for movement in a forward direction;
a hitch mounted on a forward end of the frame for connecting to the vehicle;
a pair of blades mounted laterally spaced apart on the frame, each blade having a contact edge extending transversely to the forward direction for engaging the earth; and pivotal mounting means mounting the blades on the frame for pivotal movement about respective upright axes such that an angle between the contact edge of each blade and the forward direction is adjustable.
2. The land leveller according to claim 1 wherein the frame comprises a hitch member mounting the hitch thereon, a pair of floating elements mounted on the hitch member for independent upward and downward deflections relative to the hitch members and a ground support for supporting the floating elements above the ground, the blades being mounted on the respective floating elements for movement therewith.
3. The land leveller according to claim 2 wherein the plurality of wheels are mounted on a rearward end of the floating elements for deflecting the floating elements in response to irregularities in the ground.
4. The land leveller according to claim 2 wherein the floating elements are pivotally mounted on the hitch member.
5. The land leveller according to claim 4 wherein the floating elements are mounted for pivotal movement about respective longitudinal axes being parallel to the forward direction.
6. The land leveller according to claim 1 wherein there is provided securing means for securing the blades at various positions, each corresponding to a different relative angle between the blade and the forward direction.
7. The land leveller according to claim 6 wherein the securing means comprises a pair of locking members mounted on the frame and arranged to engage the respective blades in a locked position.
8. The land leveller according to claim 1 wherein there is provided hitch mounting means for mounting the hitch on the frame at numerous vertical spacings between the hitch and the frame.
9. The land leveller according to claim 1 wherein there is provided wheel mounting means for mounting the wheels on the frame at numerous vertical spacings between the wheels and the frame for adjusting a height of the blades relative to the ground.
10. The land leveller according to claim 10 wherein the wheel mounting means comprises a pair of wheel support frames mounting the wheels thereon, the wheel support frame being pivotally mounted on the frame for upward and downward deflections relative to the frame.
11. The land leveller according to claim 10 wherein there is provided a hydraulic actuator for controlling the height of the wheels relative to the frame.
12. The land leveller according to claim 1 wherein there is provided numerous blades of different size, each blade being arranged to selectively mount on the frame for different applications.
13. The land leveller according to claim 1 wherein there is provided lateral blade adjustment means for mounting the blades on the frame at various laterally spaced positions on the frame.
14. A land leveller arranged to be towed by a vehicle for levelling earth, the land leveller comprising:
a frame having a hitch member and a pair of floating elements mounted on the hitch member for independent upward and downward deflections of the floating elements relative to the hitch member;
a plurality of wheels supporting the frame for movement in a forward direction;
a hitch mounted on a forward end of the hitch member for connecting to the vehicle; and a pair of blades mounted on the respective floating elements for movement therewith, the blades being oriented to extend inward and rearward from respective outer ends toward respective inner ends, the inner ends being spaced apart.
a frame having a hitch member and a pair of floating elements mounted on the hitch member for independent upward and downward deflections of the floating elements relative to the hitch member;
a plurality of wheels supporting the frame for movement in a forward direction;
a hitch mounted on a forward end of the hitch member for connecting to the vehicle; and a pair of blades mounted on the respective floating elements for movement therewith, the blades being oriented to extend inward and rearward from respective outer ends toward respective inner ends, the inner ends being spaced apart.
15. The land leveller according to claim 14 wherein the plurality of wheels are mounted on a rearward end of the floating elements for deflecting the floating elements in response to irregularities in the ground.
16. The land leveller according to claim 14 wherein the floating elements are pivotally mounted on the hitch member.
17. The land leveller according to claim 16 wherein the floating elements are mounted for pivotal movement about respective longitudinal axes being parallel to the forward direction.
18. The land leveller according to claim 14 wherein there is provided hitch mounting means for mounting the hitch on the frame at numerous vertical spacings between the hitch and the frame.
19. The land leveller according to claim 14 wherein there is provided wheel mounting means for mounting the wheels on the frame at numerous vertical spacings between the wheels and the frame for adjusting a height of the blades relative to the ground.
20. The land leveller according to claim 14 wherein there is provided blade height adjustment means for mounting the blades on the frame at various heights relative to the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2275152 CA2275152A1 (en) | 1999-06-15 | 1999-06-15 | Land leveller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2275152 CA2275152A1 (en) | 1999-06-15 | 1999-06-15 | Land leveller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2275152A1 true CA2275152A1 (en) | 2000-12-15 |
Family
ID=30774369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2275152 Abandoned CA2275152A1 (en) | 1999-06-15 | 1999-06-15 | Land leveller |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2275152A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005042848A1 (en) * | 2003-10-28 | 2005-05-12 | Percy Linton Smith | A levelling device |
| AT515755A3 (en) * | 2014-05-13 | 2016-04-15 | Andreas Thomae | Way maintenance equipment |
| FR3066878A1 (en) * | 2017-05-31 | 2018-12-07 | Erwann Touffet | TRACTED DEVICE INTENDED PARTICULARLY FOR WEEDING AND / OR MAINTENANCE OF FLOORS, AND IN PARTICULAR FLOORS BOMBS |
| CN113099745A (en) * | 2021-03-09 | 2021-07-13 | 无为县向阳饲料有限责任公司 | Agricultural land leveler capable of adjusting angle |
-
1999
- 1999-06-15 CA CA 2275152 patent/CA2275152A1/en not_active Abandoned
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005042848A1 (en) * | 2003-10-28 | 2005-05-12 | Percy Linton Smith | A levelling device |
| AU2003257890B2 (en) * | 2003-10-28 | 2006-03-16 | Percy Lynton Smith | A Levelling Device |
| AT515755A3 (en) * | 2014-05-13 | 2016-04-15 | Andreas Thomae | Way maintenance equipment |
| FR3066878A1 (en) * | 2017-05-31 | 2018-12-07 | Erwann Touffet | TRACTED DEVICE INTENDED PARTICULARLY FOR WEEDING AND / OR MAINTENANCE OF FLOORS, AND IN PARTICULAR FLOORS BOMBS |
| CN113099745A (en) * | 2021-03-09 | 2021-07-13 | 无为县向阳饲料有限责任公司 | Agricultural land leveler capable of adjusting angle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2019203750B2 (en) | Improvements to openers for seeders | |
| US4924945A (en) | Soil leveling apparatus with improved scraper member | |
| US4802293A (en) | Adjustable earth-moving attachment for a vehicle | |
| US4528920A (en) | Tillage and seeding implement with trailing opener and press wheel gangs | |
| US4244662A (en) | Snow groomer | |
| US5806605A (en) | Implement for preparing seedbeds | |
| FI86359B (en) | ANORDNING VID UTMATNINGSMASKIN FOER LANTBRUK. | |
| US5535832A (en) | Land leveler and cultivator | |
| US4489789A (en) | Tillage and planter carrier | |
| US6502644B2 (en) | Leveling wheel structure for a minimum tillage ripper | |
| US5833012A (en) | Scraper and drag attachment | |
| US6739404B2 (en) | Wheel supported implement for working and grading soil | |
| US6293354B1 (en) | Disc unit | |
| US4047574A (en) | Implement for levelling levees | |
| US6279665B1 (en) | Sod cutting attachment for skid-steer vehicle | |
| US5108221A (en) | Roadway conditioning apparatus | |
| US4269018A (en) | Bean divider | |
| US4337833A (en) | Tiltable box scraper for three-point attachment to a tractor | |
| CA2275152A1 (en) | Land leveller | |
| US4614240A (en) | Multi-blade soil handling apparatus | |
| US6000476A (en) | Combined rock puller and land leveller | |
| US4869327A (en) | Reversible one-way disk plow | |
| US9032648B2 (en) | Ditch forming implement | |
| US4597452A (en) | Disk grading terrace plow | |
| US5477931A (en) | V ditching machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |