Support system for a box blade attached to a tractor
First Claim
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1. An attachment for A tractor with a movable box blade assembly comprising:
- a left rear wheel and a right rear wheel, mounted at distal ends of a rear axle;
a three-point hitch attached to the tractor, adjacent to and between the left rear wheel and the right rear wheel;
a box blade assembly attached to the three-point hitch;
a left horizontal support with a proximal end operatively connected to the rear axle adjacent the left rear wheel;
a left trailing wheel supporting a distal end of the left horizontal support, distal from the proximal end of the left horizontal support;
a left extendable support shaft interconnecting the box blade assembly to the left horizontal support between the proximal end and the distal end of the left horizontal support;
a left horizontal actuator that extends and retracts the left extendable support shaft to move the left horizontal support relative to the box blade assembly, wherein the left horizontal actuator allows the left trailing wheel to be selectively positioned by an operator to trail behind the box blade assembly during normal operation or to be extended outwardly to the left from the box blade assembly;
a right horizontal support with a proximal end operatively connected to the rear axle adjacent the right rear wheel;
a right trailing wheel supporting a distal end of the right horizontal support, distal from the proximal end of the right horizontal support;
a right extendable support shaft interconnecting the box blade assembly to the right horizontal support between the proximal end and the distal end of the right horizontal support;
a right horizontal actuator that extends and retracts the right extendable support shaft to move the right horizontal support relative to the box blade assembly, wherein the right horizontal actuator allows the right trailing wheel to be selectively positioned by an operator to trail behind the box blade assembly during normal operation or to be extended outwardly to the right from the box blade assembly.
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Abstract
A support system for a box blade attached to a tractor. The support system includes a rear mounted frame supporting a box blade assembly and, optionally a scarifier. The box blade assembly may be pivotable around a substantially horizontal axis extending through the center of the tractor. The support system further includes trailing wheels that are pivotally attached to the frame and selectively laterally displaceable with respect to the horizontal axis.
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Citations
23 Claims
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1. An attachment for A tractor with a movable box blade assembly comprising:
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a left rear wheel and a right rear wheel, mounted at distal ends of a rear axle; a three-point hitch attached to the tractor, adjacent to and between the left rear wheel and the right rear wheel; a box blade assembly attached to the three-point hitch; a left horizontal support with a proximal end operatively connected to the rear axle adjacent the left rear wheel; a left trailing wheel supporting a distal end of the left horizontal support, distal from the proximal end of the left horizontal support; a left extendable support shaft interconnecting the box blade assembly to the left horizontal support between the proximal end and the distal end of the left horizontal support; a left horizontal actuator that extends and retracts the left extendable support shaft to move the left horizontal support relative to the box blade assembly, wherein the left horizontal actuator allows the left trailing wheel to be selectively positioned by an operator to trail behind the box blade assembly during normal operation or to be extended outwardly to the left from the box blade assembly; a right horizontal support with a proximal end operatively connected to the rear axle adjacent the right rear wheel; a right trailing wheel supporting a distal end of the right horizontal support, distal from the proximal end of the right horizontal support; a right extendable support shaft interconnecting the box blade assembly to the right horizontal support between the proximal end and the distal end of the right horizontal support; a right horizontal actuator that extends and retracts the right extendable support shaft to move the right horizontal support relative to the box blade assembly, wherein the right horizontal actuator allows the right trailing wheel to be selectively positioned by an operator to trail behind the box blade assembly during normal operation or to be extended outwardly to the right from the box blade assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A support system for a box blade attached to a tractor, comprising:
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a first pivot bearing; a first mount connected to the first pivot bearing, the first mount sized to be operatively connected to a first rear wheel of a tractor so that the first pivot bearing is generally coaxial with the first rear wheel; a first horizontal support extending from the first pivot bearing to a first distal end; a first trailing wheel movably connected to the first distal end of the first horizontal support; a box blade assembly; a first horizontal actuator interconnecting the first horizontal support to the box blade assembly, wherein the first horizontal actuator allows the first trailing wheel to be selectively positioned by an operator to trail behind the box blade assembly during normal operation or to be extended outwardly from the box blade assembly; a second pivot bearing; a second mount connected to the second pivot bearing, the second mount sized to be operatively connected to a second rear wheel of a tractor so that the second pivot bearing is generally coaxial with the second rear wheel; a second horizontal support extending from the second pivot bearing to a second distal end; a second trailing wheel movably connected to the second distal end of the second horizontal support; a second horizontal actuator interconnecting the second horizontal support to the box blade assembly, wherein the second horizontal actuator allows the second trailing wheel to be selectively positioned by an operator to trail behind the box blade assembly during normal operation or to be extended outwardly from the box blade assembly. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method of providing different reference points for a box blade connected to a tractor, comprising the steps of:
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connecting a box blade to a tractor using a three-point hitch; supporting a left proximal end of a left beam on a left wheel of a tractor; supporting a left distal end of the left beam on a left trailing wheel; coupling the left beam to the box blade through a left extendable lateral support including a left horizontal mechanical actuator that can be actuated to extend and retract, thereby moving the left beam relative to the box blade; selectively positioning the left trailing wheel to move toward and away from a horizontal center line of a tractor by actuation of the left horizontal mechanical actuator, wherein the left trailing wheel may be moved inwardly to the right to allow the trailing wheel to be positioned to trail behind the box blade during normal operation or to be extended outwardly to the left from the box blade; supporting a right proximal end of a right beam on a right wheel of a tractor; supporting a right distal end of the right beam on a right trailing wheel; coupling the right beam to the box blade through a right extendable lateral support including a right horizontal mechanical actuator that can be actuated to extend and retract, thereby moving the right beam relative to the box blade; and selectively positioning the right trailing wheel to move toward and away from a horizontal center line of a tractor by actuation of the right horizontal mechanical actuator, wherein the right trailing wheel may be moved inwardly to the left to allow the trailing wheel to be positioned to trail behind the box blade during normal operation or to be extended outwardly to the right from the box blade. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification