Apparatus for synchronized spreading of granular and liquid material
DCFirst Claim
1. In a synchronized granular and liquid spreader device mountable on a vehicle including a hydraulic system and comprising a storage hopper for containing granular material, a granular delivery system mounted on said vehicle for distributing granular material from said hopper, said hopper depositing said granular material onto conveyor means driven by said hydraulic system, said conveyor means moving the granular material to a delivery position, delivery means at said delivery position for receiving and distributing said granular material;
- a liquid storage tank, a liquid delivery system interconnected to said granular delivery system for supplying liquid material, means for selectively actuating said liquid delivery system for adding the liquid to the granular material generally at the delivery position; and
control means for controlling the synchronous feed rate of the granular and liquid materials, the improvements in said control means comprising means for selectively setting the liquid feed rate within a range of feed rates, means for selectively setting the granular delivery system feed rate over a selected range of feed rates of granular material;
means for maintaining a predetermined ratio of the feed rate of liquid material to the feed rate of granular material and means operative in response to actuation of said liquid delivery system for reducing by a variably selected percentage the quantity of granular material delivered by said granular material delivery system while maintaining said predetermined ratio of the feed rates of delivery of liquid material and granular material.
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Abstract
A granular and liquid material spreading system mounted on a vehicle. Granular material is moved from a hopper to a delivery means using hydraulic pumps and motors. The hydraulic system also drives a liquid delivery system. A control system is provided to control the amount of granular material and liquid material applied to a surface. The feed rate of liquid delivery is dependent upon the feed rate of the granular material. The liquid feed rate may be changed within a predetermined range. The level of liquid may be sensed to disengage the liquid delivery system. Initiation of liquid delivery reduces the feed rate of granular material by a variably selected percentage.
66 Citations
17 Claims
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1. In a synchronized granular and liquid spreader device mountable on a vehicle including a hydraulic system and comprising a storage hopper for containing granular material, a granular delivery system mounted on said vehicle for distributing granular material from said hopper, said hopper depositing said granular material onto conveyor means driven by said hydraulic system, said conveyor means moving the granular material to a delivery position, delivery means at said delivery position for receiving and distributing said granular material;
- a liquid storage tank, a liquid delivery system interconnected to said granular delivery system for supplying liquid material, means for selectively actuating said liquid delivery system for adding the liquid to the granular material generally at the delivery position; and
control means for controlling the synchronous feed rate of the granular and liquid materials, the improvements in said control means comprising means for selectively setting the liquid feed rate within a range of feed rates, means for selectively setting the granular delivery system feed rate over a selected range of feed rates of granular material;
means for maintaining a predetermined ratio of the feed rate of liquid material to the feed rate of granular material and means operative in response to actuation of said liquid delivery system for reducing by a variably selected percentage the quantity of granular material delivered by said granular material delivery system while maintaining said predetermined ratio of the feed rates of delivery of liquid material and granular material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a liquid storage tank, a liquid delivery system interconnected to said granular delivery system for supplying liquid material, means for selectively actuating said liquid delivery system for adding the liquid to the granular material generally at the delivery position; and
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13. In a synchronized granular and liquid spreader device mountable on a vehicle and comprising a granular delivery system mounted on said vehicle for distributing granular material from a hopper, said hopper depositing said granular material onto conveyor means driven by a hydraulic system, said conveyor means for moving the granular material to a pre-selected delivery position at which delivery position delivery means receive and distribute said granular material;
- a liquid delivery system interconnected to said granular delivery system for a synchronous feed rate of the granular and liquid materials, said liquid delivery system for adding the liquid to the granular material generally at the delivery means; and
control means for controlling the feed rate of the granular and liquid materials, the improvement in said control means comprising means for reducing by a selected percentage the feed rate of the granular delivery system upon activation of the liquid delivery system; and
means for directly and proportionally changing the granular material feed rate as the liquid delivery feed rate is changed. - View Dependent Claims (14)
- a liquid delivery system interconnected to said granular delivery system for a synchronous feed rate of the granular and liquid materials, said liquid delivery system for adding the liquid to the granular material generally at the delivery means; and
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15. In an apparatus for the synchronized spreading of granular and liquid materials onto a surface and comprising a granular material delivery system including a hopper for containing granular material, a spreader for distributing the granular material onto a surface, a conveyor for conveying the granular material from said hopper to said granular material spreader, a liquid material delivery system including a tank for containing liquid material, a spreader for distributing the liquid material onto said surface, a pump for pumping liquid material from said tank to said liquid material spreader, first means for driving said conveyor, second means for driving said pump, and means for controlling said first means and said second means, the improvement in said controlling means comprising means for controlling said first means and thereby the quantity per surface area of granular material to be applied to the surface, means for controlling said second means and thereby the amount of liquid per surface area applied to the surface as a function of the amount of granular material being applied to the surface and a selected ratio of liquid material to granular material, and means for variably controlling said first means in response to the activation of said second means, for reducing the quantity of granular material applied to the surface by a selected percentage of the material quantity applied prior to the activation of said second means.
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16. In an apparatus for the synchronized spreading of granular and liquid materials onto a surface and comprising a granular material delivery system including a hopper for containing granular material, a spreader for distributing the granular material onto a surface, a conveyor for conveying the granular material from said hopper to said granular material spreader, a liquid material delivery system including a tank for containing liquid material, a spreader for distributing the liquid material onto said surface, a pump for pumping liquid material from said tank to said liquid material spreader, a first motor for driving said conveyor, a second motor for driving said pump, and means for controlling said first and second motors, the improvement in said controlling means comprising means for controlling said first motor as a function of a predetermined amount of granular material to be applied to the surface, means for adjustably controlling said second motor as a function of the amount of granular material to be applied to the surface and a selected ratio of liquid material to granular material, and means for variably controlling said first motor in response to the activation of said second motor for reducing the quantity of granular material applied to the surface by a selected percentage of the material quantity applied prior to the activation of said second motor.
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17. In an apparatus for the synchronized spreading of granular and liquid materials onto a surface and comprising a granular material delivery system including a hopper for containing granular material, a spreader for distributing the granular material onto a surface, a conveyor for conveying the granular material from said hopper to said granular material spreader, a liquid material delivery system including a tank for containing liquid material, a spreader for distributing the liquid material onto said surface, a pump for pumping liquid material from said tank to said liquid material spreader, a first fluid pressure motor for driving said conveyor, a second fluid pressure motor for driving said pump, a pressure fluid pump for delivering pressure fluid to said first and second fluid pressure motors, and means for controlling the flow of pressure fluid to said first and second fluid pressure motors, the improvement in said controlling means comprising means for proportioning the flow of pressure fluid to said first and second fluid pressure motors as a function of a selected amount of granular material to be applied to the surface and a selected ratio of granular material to liquid material to be applied to the surface, and means for variably controlling said first fluid pressure motor in response to the activation of said second fluid pressure motor for reducing the quantity of granular material applied to the surface by a selected percentage of the material quantity applied prior to the activation of said second fluid pressure motor.
Specification