Device for forming tight radius curbs and gutters with a paving machine
First Claim
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1. A curb forming machine comprising:
- a frame;
at least three leg assemblies for moving the machine, each leg assembly having a leg and a track mounted to the leg;
a hopper carried by the frame, the hopper including an opening for receiving curb forming material;
a slipform in communication with the hopper for receiving the curb forming material from the hopper for forming a curb; and
a positioning arrangement for positioning a corresponding leg assembly to form a tight radius, wherein the positioning arrangement comprises means to rotate the track about the leg, and means to rotate the leg relative to the frame.
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Abstract
A system and method to allow a paving machine to form tight radii in continuous extrusions such as curbs and gutters is disclosed. A shift cylinder is used with the steering mechanism of a typical paving machine to allow sharp radius turns. The steering cylinder is used to pivot the track of the paving machine about its leg and the steering cylinder is used to pivot the leg relative to the frame of the paving machine. A hydraulic circuit is operator activated to allow fluid flow through a flow divider to ensure each cylinder operates in concert.
35 Citations
17 Claims
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1. A curb forming machine comprising:
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a frame;
at least three leg assemblies for moving the machine, each leg assembly having a leg and a track mounted to the leg;
a hopper carried by the frame, the hopper including an opening for receiving curb forming material;
a slipform in communication with the hopper for receiving the curb forming material from the hopper for forming a curb; and
a positioning arrangement for positioning a corresponding leg assembly to form a tight radius, wherein the positioning arrangement comprises means to rotate the track about the leg, and means to rotate the leg relative to the frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. In a curb forming machine comprising a frame with at least three leg assemblies for moving the machine, each leg assembly having a leg and a track mounted to the leg;
- a hopper carried by the frame, the hopper including an opening for receiving curb forming material; and
a slipform in communication with the hopper for receiving the curb forming material from the hopper for forming a curb, a method for a leg forming a tight radius, the method comprising the steps of;
rotating the track about the leg; and
rotating the leg relative to the frame. - View Dependent Claims (10, 11, 12, 13)
- a hopper carried by the frame, the hopper including an opening for receiving curb forming material; and
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14. A curb forming machine comprising:
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a frame;
at least three leg assemblies for moving the machine, each leg assembly having a leg and a track mounted to the leg;
a hopper carried by the frame, the hopper including an opening for receiving curb forming material;
a slipform in communication with the hopper for receiving the curb forming material from the hopper for forming a curb;
a hydraulic circuit;
means to activate the hydraulic circuit;
a steering cylinder to rotate the track about the leg; and
a shift cylinder to rotate the leg relative to the frame;
wherein activation of the hydraulic circuit actuates the steering cylinder to rotate the track about the leg, and actuates the shift cylinder to rotate the leg relative to the frame. - View Dependent Claims (15, 16, 17)
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Specification