AUTOMATED SPRAY SYSTEM FOR A MILLING MACHINE
20220298730 ยท 2022-09-22
Assignee
Inventors
Cpc classification
E01C19/176
FIXED CONSTRUCTIONS
International classification
Abstract
A spray system for a milling machine includes a plurality of flow adjustment assemblies, which include a flow adjustment assembly, and a spray controller. The flow adjustment assembly includes a pressure sensor and a valve. The spray controller is configured to receive, from a user interface, an input that indicates a desired flow rate of a fluid through the flow adjustment assembly. The spray controller is configured to receive, from the pressure sensor, a pressure measurement of the fluid. The spray controller is configured to determine, based on receiving the pressure measurement, a desired opening size of the valve to enable the desired flow rate of the fluid. The spray controller is configured to actuate the valve to adjust an opening size of the valve to equal the desired opening size and cause the fluid to flow through the flow adjustment assembly at the desired flow rate.
Claims
1. A spray system for a milling machine, comprising: a plurality of flow adjustment assemblies, wherein a particular flow adjustment assembly, of the plurality of flow adjustment assemblies, includes a pressure sensor and a valve; and a spray controller that interacts with the plurality of flow adjustment assemblies and is configured to: receive, from a user interface, an input that indicates a desired flow rate of a fluid through the particular flow adjustment assembly, receive, from the pressure sensor of the particular flow adjustment assembly, a pressure measurement of the fluid, determine, based on receiving the pressure measurement, a desired opening size of the valve of the particular flow adjustment assembly to enable the desired flow rate of the fluid, and actuate, based on determining the desired opening size of the valve, the valve to adjust an opening size of the valve to equal the desired opening size and cause the fluid to flow through the particular flow adjustment assembly at the desired flow rate.
2. The spray system of claim 1, further comprising: one or more spray banks, wherein the one or more spray banks each include a fluid inlet and a plurality of fluid outlets, wherein the fluid inlet and the plurality of fluid outlets each include a respective flow adjustment assembly of the plurality of flow adjustment assemblies.
3. The spray system of claim 2, wherein the one or more spray banks include a plurality of spray banks; and the particular flow adjustment assembly of the plurality of flow adjustment assemblies is located at the fluid inlet of a spray bank of the plurality of spray banks.
4. The spray system of claim 2, wherein the particular flow adjustment assembly of the plurality of flow adjustment assemblies is located at a fluid outlet of the plurality of fluid outlets of a spray bank of the one or more spray banks.
5. The spray system of claim 3, wherein the particular flow adjustment assembly is a first flow adjustment assembly, the pressure sensor is a first pressure sensor, the valve is a first valve, the input is a first input, the desired flow rate is a first desired flow rate, the pressure measurement is a first pressure measurement, the desired opening size is a first desired opening size, and the opening size is a first opening size; the plurality of flow adjustment assemblies further includes a second flow adjustment assembly that includes a second pressure sensor and a second valve; and the spray controller is further configured to: receive, from the user interface, a second input that indicates a second desired flow rate of the fluid through the second flow adjustment assembly of the plurality of flow adjustment assemblies, receive, from the second pressure sensor of the second flow adjustment assembly, a second pressure measurement of the fluid, determine, based on receiving the second pressure measurement, a second desired opening size of the second valve of the second flow adjustment assembly to enable the second desired flow rate of the fluid, and actuate, based on determining the second desired opening size of the second valve, the second valve to adjust a second opening size of the second valve to equal the second desired opening size and cause the fluid to flow through the second flow adjustment assembly at the second desired flow rate.
6. The spray system of claim 1, wherein the pressure sensor is a differential pressure sensor; and the pressure measurement is a differential pressure value.
7. The spray system of claim 1, wherein the pressure sensor is a first gauge pressure sensor, the particular flow adjustment assembly further includes a second gauge pressure sensor, and the pressure measurement is a first gauge pressure value; the spray controller, prior to determining the desired opening size of the valve, is further configured to receive, from the second gauge pressure sensor of the particular flow adjustment assembly, a second gauge pressure value of the fluid; and determining the desired opening size of the valve is further based on receiving the second gauge pressure value.
8. A milling machine, comprising: a plurality of fluid outlets that are configured to dispense fluid; a corresponding plurality of flow adjustment assemblies that are configured to enable variable flow rates of the fluid through the plurality of fluid outlets, wherein a particular flow adjustment assembly, of the plurality of flow adjustment assemblies, includes a pressure sensor and a valve; and a spray controller that interacts with the plurality of flow adjustment assemblies and is configured to: receive, from a user interface, an input that indicates a desired flow rate of the fluid through the particular flow adjustment assembly, receive, from the pressure sensor of the particular flow adjustment assembly, a pressure measurement of the fluid, determine, based on receiving the pressure measurement, a desired opening size of the valve of the flow adjustment assembly to enable the desired flow rate of the fluid, and actuate, based on determining the desired opening size of the valve, the valve to adjust an opening size of the valve to equal the desired opening size and cause the fluid to flow through the flow adjustment assembly at the desired flow rate.
9. The milling machine of claim 8, wherein the milling machine further comprises a rotor that is configured to plane a road surface during operation of the milling machine; and one or more of the plurality of fluid outlets are configured to spray the fluid at the rotor.
10. The milling machine of claim 8, wherein the milling machine further comprises one or more conveyors to transport road material out of the milling machine during operation of the milling machine; and one or more of the plurality of fluid outlets are configured to spray the fluid at the one or more conveyors.
11. The milling machine of claim 8, wherein one or more of the plurality of fluid outlets are configured to spray the fluid at a ground surface during operation of the milling machine.
12. The milling machine of claim 8, wherein the particular flow adjustment assembly is a first flow adjustment assembly, the pressure sensor is a first pressure sensor, the valve is a first valve, the input is a first input, the desired flow rate is a first desired flow rate, the pressure measurement is a first pressure measurement, the desired opening size is a first desired opening size, and the opening size is a first opening size; the plurality of flow adjustment assemblies further includes a second flow adjustment assembly that includes a second pressure sensor and a second valve; and the spray controller is further configured to: receive, from the user interface, a second input that indicates a second desired flow rate of the fluid through the second flow adjustment assembly of the plurality of flow adjustment assemblies, receive, from the second pressure sensor of the second flow adjustment assembly, a second pressure measurement of the fluid, determine, based on receiving the second pressure measurement, a second desired opening size of the second valve of the second flow adjustment assembly to enable the second desired flow rate of the fluid, and actuate, based on determining the second desired opening size of the second valve, the second valve to adjust a second opening size of the second valve to equal the second desired opening size and cause the fluid to flow through the second flow adjustment assembly at the second desired flow rate.
13. The milling machine of claim 8, wherein the fluid is water or emulsion.
14. The milling machine of claim 8, wherein determining the desired opening size is further based on the desired flow rate and a viscosity value of the fluid.
15. A method, comprising: receiving, from a user interface, an input that indicates a desired flow rate of a fluid through a particular flow adjustment assembly of a plurality of flow adjustment assemblies, wherein the particular flow adjustment assembly includes a sensor and a valve; receiving, from the sensor of the particular flow adjustment assembly, a measurement of the fluid; determining, based on receiving the measurement, a desired opening size of the valve of the particular flow adjustment assembly to enable the desired flow rate of the fluid; and actuating, based on determining the desired opening size of the valve, the valve to adjust an opening size of the valve to equal the desired opening size and cause the fluid to flow through the particular flow adjustment assembly at the desired flow rate.
16. The method of claim 15, wherein the sensor is a first gauge pressure sensor; the measurement is a first pressure value; the particular flow adjustment assembly further includes a second gauge pressure sensor; the method further comprises receiving, from the second gauge pressure sensor of the particular flow adjustment assembly, a second pressure value of the fluid; and determining the desired opening size is further based on receiving the second pressure value.
17. The method of claim 15, wherein the sensor is a first differential pressure sensor; and the measurement is a differential pressure value.
18. The method of claim 15, wherein prior to receiving the measurement, the method includes: providing, to the sensor of the particular flow adjustment assembly, and based on receiving the input, a request for a measurement of the fluid; and receiving the measurement from the sensor is based on providing the request to the sensor.
19. The method of claim 15, wherein the particular flow adjustment assembly is a first flow adjustment assembly, the sensor is a first pressure sensor, the valve is a first valve, the input is a first input, the desired flow rate is a first desired flow rate, the measurement is a first pressure measurement, the desired opening size is a first desired opening size, and the opening size is a first opening size; and the method further comprises: receiving, from the user interface, a second input that indicates a second desired flow rate of the fluid through a second flow adjustment assembly of the plurality of flow adjustment assemblies, wherein the second flow adjustment assembly includes a second pressure sensor and a second valve; receiving, from the second pressure sensor of the second flow adjustment assembly, a second pressure measurement of the fluid, determining, based on receiving the second pressure measurement, a second desired opening size of the second valve of the second flow adjustment assembly to enable the second desired flow rate of the fluid, and actuating, based on determining the second desired opening size of the second valve, the second valve to adjust a second opening size of the second valve to equal the second desired opening size and cause the fluid to flow through the second flow adjustment assembly at the second desired flow rate.
20. The method of claim 19, wherein the first desired flow rate is different than the second desired flow rate.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0009]
[0010]
[0011]
[0012]
[0013]
DETAILED DESCRIPTION
[0014] This disclosure relates to a spray system, which is applicable to any machine that dispenses fluids. While a milling machine in the form of a cold planer is illustrated in
[0015] To simplify the explanation below, the same reference numbers may be used to denote like features. The drawings may not be to scale.
[0016]
[0017] The machine body 102 includes a frame 108, an operator station 110, a rotor 112, a pair of conveyors 114, and a plurality of spray banks 116. The frame 108 is a structure that supports and encloses, at least in part, the operator station 110, the rotor 112, the pair of conveyors 114, and the plurality of spray banks 116. The operator station 110 is a compartment for an operator of the machine 100. The operator station 110 may include input devices for the operator to control the ground-engaging members 104, the rotor 112, the pair of conveyors 114, and/or the spray banks 116. The rotor 112 is a device that is configured to rotate within the frame 108 to break up the ground surface 106 during a ground-working operation (e.g., a surface mining operation, a plunge-cut operation, and/or the like). For example, the rotor 112, which may include a plurality of teeth 118 to penetrate the ground surface 106, may be a universal rotor, a combination rotor, a soil rotor, a spade rotor, or another type of rotor. The pair of conveyors 114 are configured to transport debris generated by the rotor (e.g., asphalt debris, soil debris, and/or a combination thereof) to a second machine, such as a dump truck (not shown), for disposal of the debris.
[0018] The plurality of spray banks 116, which will be described below in connection with
[0019] As indicated above,
[0020]
[0021] The spray system 200 includes fluid circulation system 202 and an electronic control system 204 that communicates with the fluid circulation system 202. The fluid circulation system 202 includes a fluid source 206, the spray bank 116, and a pump 208 fluidly connected therebetween. The fluid source 206 is configured to store the fluid (e.g., water or emulsion) therein. For example, the fluid source 206 may be a retention tank. The spray bank 116, as indicated above, is configured to disperse the fluid. The spray bank 116 includes an inlet 210, a plurality of outlets 212, and a plurality of flow adjustment assemblies 214 (variations of which will be described below in connection with
[0022] The electronic control system 204, which is configured to interact with the fluid circulation system 202, includes a user interface 216 and a spray controller 218. The user interface 216, which may be one of the input devices in the operator station 110, is a device that is configured to receive, from the operator, input that indicates actuation of the pump 208 and/or one more values relating to flow of the fluid (e.g., a desired flow rate of the fluid through a particular flow adjustment assembly 214) and transmit the input to the spray controller 218. For example, the user interface 216 may include a keyboard, a keypad, a touch screen, a mouse, a track-pad, a trackball, one or more push-buttons, one or more toggle switches, a voice recognition system, or another type of input device.
[0023] The spray controller 218 is a device that is configured to interact with the pump 208 and the plurality of flow adjustment assemblies 214 to actuate flow of the fluid and/or adjust a flow rate of the fluid based on receiving the input from the user interface 216. The spray controller 218 includes a processor 220 and a memory 222. The processor 220 is implemented in hardware, firmware, and/or a combination of hardware and software. The processor 220 is a central processing unit (CPU), a graphics processing unit (GPU), an accelerated processing unit (APU), a microprocessor, a microcontroller, a digital signal processor (DSP), a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), or another type of processing component. The processor 220 includes one or more processors capable of being programmed to perform a function. The memory 222 includes a random-access memory (RAM), a read only memory (ROM), and/or another type of dynamic or static storage device (e.g., a flash memory, a magnetic memory, and/or an optical memory) that stores information and/or instructions for use by the processor 220 (e.g., information and/or instructions associated with flow of the fluid). Based on communication with the user interface 216 and one or more of the flow adjustment assemblies 214 (a process which will be described below in connection with
[0024] As indicated above,
[0025]
[0026] As shown in
[0027] As shown in
[0028] As indicated above,
[0029]
[0030] As shown in
[0031] As further shown in
[0032] As further shown in
[0033] As further shown in
[0034] It should be understood that one or more of the above-described steps of the method 500 (e.g., block 510, 520, 530, and/or block 540) may be repeated in relation to different flow adjustment assemblies 214 of the plurality of flow adjustment assemblies 214. In other words, the method 500 may be an iterative process and involve continued communication with the sensors and adjustment of the valves to produce the desired flow rates of the fluid (e.g., in accordance with Bernoulli principles).
[0035] Although
INDUSTRIAL APPLICABILITY
[0036] The spray system 200, as described here, is particularly applicable to a machine that dispenses fluids in association with working material of a substrate (e.g., asphalt, aggregate, soil, and/or a combination thereof). For example, the machine 100 may be a milling machine (e.g., a cold planer, a rotary mixer) or another type of machine.
[0037] By utilizing a plurality of flow adjustment assemblies 214, which each include one or more pressure sensors (e.g., a pair of gauge pressure sensors and/or a differential pressure sensor) and a valve (e.g., the valve 306), the spray system 200 enables automated adjustment of flow rates of the fluid at one or more of the plurality of outlets 212. As a result, the spray system 200 may facilitate the adjustment process for an operator of the machine 100 and yield more consistent results. This type of automated adjustment process may be especially beneficial in dusty environments, during ground-working operations that tend to over-heat components (e.g., the rotor 112 and/or the pair of conveyors 114), and/or when the machine 100 is positioned at an incline. Furthermore, by including the plurality of flow adjustment assemblies 214, the spray system 200 has an added capability of detecting obstructions within the fluid circulation system 202, which may prevent component damage and, as a result, conserve resources that might otherwise have been consumed replacing and/or repairing the damaged components.