Levelling machine
First Claim
1. A mobile ground levelling machine comprising:
- a main frame,a pivotal sub-frame pivotally connected to the main frame so as to lie in trailing relationship therewith,a hopper carried on the main frame for containing a supply of filling material such as soil or sand,an elongate scraper blade mounted on the main frame and extending thereacross.an elongate ski-foot removable secured along the lower edge of said scraper blade and projecting rearwardly thereof for engagement with the ground so as to allow the scraper blade to ride smoothly over ground over which the machine travels,discharged means associated with the hopper to control the discharge of filling material from the hopper, and arranged in use to discharge filling material forwardly of the scraper blade,a plurality of ground-engaging wheels carried by and evenly spaced across the width of the sub-frame in trailing relationship to the scraper blade,power means operatively connected between the main frame and the sub-frame to effect said pivotal movement of said sub-frame relative to the main frame and in turn the raising and lowering of the main frame, together with said scraper blade, relative to the ground over which the machine travels, andcontrol means for controlling the operation of said power means to in turn control elevation of the scraper blade relative to a preselected reference plane.
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Accused Products
Abstract
An improved ground levelling machine (10) for levelling small areas of ground comprising a main frame (11), a pivotal sub-frame (15) trailing said main frame (11) and pivotally connected thereto, a scraper blade (40) carried by the main frame (11), a hopper (27) carried on the main frame (11) for the supply of soil, sand or other filling material, a plurality of ground-engaging wheels (16) supporting the sub-frame (15), power means (22) to effect pivotal movement of the sub-frame (15) relative to the main frame (11) and to thereby raise and lower the main frame (11) relative to the ground, and control means (59) for controlling the operation of the power means (11) and to in turn control the elevation of the scraper blade (40) relative to a preselected reference plane.
41 Citations
7 Claims
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1. A mobile ground levelling machine comprising:
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a main frame, a pivotal sub-frame pivotally connected to the main frame so as to lie in trailing relationship therewith, a hopper carried on the main frame for containing a supply of filling material such as soil or sand, an elongate scraper blade mounted on the main frame and extending thereacross. an elongate ski-foot removable secured along the lower edge of said scraper blade and projecting rearwardly thereof for engagement with the ground so as to allow the scraper blade to ride smoothly over ground over which the machine travels, discharged means associated with the hopper to control the discharge of filling material from the hopper, and arranged in use to discharge filling material forwardly of the scraper blade, a plurality of ground-engaging wheels carried by and evenly spaced across the width of the sub-frame in trailing relationship to the scraper blade, power means operatively connected between the main frame and the sub-frame to effect said pivotal movement of said sub-frame relative to the main frame and in turn the raising and lowering of the main frame, together with said scraper blade, relative to the ground over which the machine travels, and control means for controlling the operation of said power means to in turn control elevation of the scraper blade relative to a preselected reference plane. - View Dependent Claims (2, 3)
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4. A mobile ground levelling machine comprising:
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a main frame, a pivotal sub-frame pivotally connected to the main frame so as to lie in trailing relationship therewith, a hopper carried on the main frame for containing a supply of filling material such as soil or sand, an elongate scraper blade mounted on the main frame and extending thereacross, discharge means associated with the hopper to control the discharge of filling material from the hopper, and arranged in use to discharge filling material forwardly of the scraper blade, said discharge means comprising an endless conveyor belt extending longitudinally of said main frame, said belt being positioned to receive filling material from the hopper, and drive means to drive said belt, a plurality of ground-engaging wheels carried by and evenly spaced across the width of the sub-frame in trailing relationship to the scraper blade, power means operatively connected between the main frame and the sub-frame to effect said pivotal movement of said sub-frame relative to the main frame and in turn the raising and lowering of the main frame, together with said scraper blade, relative to the ground over which the machine travels, and control means for controlling the operation of said power means to in turn control elevation of the scraper blade relative to a preselected reference plane. - View Dependent Claims (5, 6, 7)
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Specification