CN110382316B - Agricultural work vehicle with air supply device - Google Patents

Agricultural work vehicle with air supply device Download PDF

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Publication number
CN110382316B
CN110382316B CN201880003280.8A CN201880003280A CN110382316B CN 110382316 B CN110382316 B CN 110382316B CN 201880003280 A CN201880003280 A CN 201880003280A CN 110382316 B CN110382316 B CN 110382316B
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China
Prior art keywords
air
pressure
work vehicle
stored
reference value
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CN201880003280.8A
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Chinese (zh)
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CN110382316A (en
Inventor
赵俊衍
梁幸植
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LS Mtron Ltd
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LS Mtron Ltd
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Priority claimed from KR1020180154407A external-priority patent/KR102557555B1/en
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Publication of CN110382316A publication Critical patent/CN110382316A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/26—Compressed-air systems
    • B60T13/268—Compressed-air systems using accumulators or reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/48—Other control devices or valves characterised by definite functions for filling reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/48—Other control devices or valves characterised by definite functions for filling reservoirs
    • B60T15/50—Other control devices or valves characterised by definite functions for filling reservoirs with means for limiting or relieving pressure in reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/022—Stopping, starting, unloading or idling control by means of pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/03—Stopping, starting, unloading or idling control by means of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/14—Trucks; Load vehicles, Busses
    • B60Y2200/148—Semi-trailers, articulated vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/30—Sensors
    • B60Y2400/306—Pressure sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/06—Pressure in a (hydraulic) circuit
    • F04B2205/063—Pressure in a (hydraulic) circuit in a reservoir linked to the pump outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2207/00—External parameters
    • F04B2207/02—External pressure

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

The present invention relates to an agricultural work vehicle provided with an air supply device. The air supply device includes: an air compressor; an air reservoir; a pressure sensor for measuring the pressure of air or atmospheric pressure stored in the air storage; a controller for interrupting the operation of the air compressor when the measured pressure exceeds a first reference value; and an air pressure regulator configured to discharge air inside the air pressure line system to the outside to reduce the pressure when the air pressure stored in the air reservoir exceeds a second reference value, the air pressure regulator including a pressure reducing valve configured to reduce the pressure inside the air pressure line system, wherein a measurement line for measuring the pressure of the air or the atmospheric pressure is formed at a position where the pressure reducing valve can measure the pressure of the air. According to the present invention, it is possible to suppress power loss caused by driving the air compressor all the time by pressurizing air and filling the air storage, and further to prevent the power shortage caused by unnecessary power loss from affecting the work execution.

Description

Agricultural work vehicle with air supply device
Technical Field
The present invention relates to an agricultural work vehicle including an air supply device, and more particularly, to an agricultural work vehicle including an air supply device that can minimize power loss due to a constant operation of an air compressor by measuring a pressure of air charged during a process of pressurizing the air and charging the air into an air storage (air tank) for an air brake (air brake) attached to a rear trailer of the agricultural work vehicle, an air gun (air gun) for cleaning the vehicle, or the like.
Background
As shown in fig. 1, an agricultural work vehicle 1 such as a tractor normally travels by the power of an engine 2. A bucket 5 may be attached to the rear of the agricultural work vehicle 1 such as the tractor, and the bucket 5 is pulled and moved by the power of the agricultural work vehicle 1 such as the tractor as a vehicle to be pulled.
In this way, when the hitch 5 is mounted on the agricultural work vehicle 1 such as a tractor and the like to travel, the agricultural work vehicle 1 such as a tractor and the like can travel by the power of the tractor, but it is preferable to brake not only the tractor but also the hitch 5 at the time of braking. In particular, since the acceleration of the bucket 5 and the load loaded on the bucket 5 increases as the weight thereof increases, there is a possibility that the bucket 5 cannot be braked only by the braking force of the tractor, and in this case, there is a possibility that a collision accident or the like may occur due to a slight carelessness.
Therefore, when braking is performed in a case where the hitch 5 is mounted on the rear side of the agricultural work vehicle 1 such as a tractor, it is preferable that the hitch 5 is also braked by transmitting air pressure or oil pressure to the hitch 5 or by connecting the hitch by a mechanical connection structure or the like, which is a structure necessary for safety and has a predetermined matter in many international standards and the like.
In particular, the air brake (air brake) system is one of the most widely used systems for braking the hitch 5, and brakes the hitch 5 by transmitting air pressure to the hitch 5 when braking the agricultural work vehicle 1 such as a tractor.
In contrast, Korean laid-open patent publication No. 10-2016-. That is, as shown in fig. 2, a brake pedal 110 that is operated by a foot of a driver is usually provided inside a cab of an agricultural work vehicle 1 such as a tractor, and when the driver depresses the brake pedal 110, a hydraulic cylinder 120 connected to the brake pedal 110 operates and braking by a hydraulic brake system of the agricultural work vehicle 1 such as a tractor is realized. At this time, the hydraulic brake system of the agricultural working vehicle 1 such as the tractor is operated, and the air brake (air brake) system for the trailer 5 is also operated together to brake the trailer 5.
More specifically, the air brake (air brake) system includes an air compressor 151 for compressing air, an air pressure regulator 152 for preventing the pressure of the air from becoming excessively high, an air reservoir 153 for storing the compressed air, an air brake (air brake) valve 154 mounted to the brake pedal 110, and a connector 155 connected to the air brake (air brake) valve 154 and connected to an air pipe of the hanging bucket 5, and in addition, the pressure display 56 is mounted to the air reservoir 153 and displays the pressure of the stored air.
At this time, the hydraulic cylinder 20 is operated as the driver operates the brake pedal 110, so that the air brake (air brake) valve 154 is operated while the hydraulic brake system of the agricultural work vehicle 1 such as a tractor is operated, and the compressed air compressed by the air compressor 151 and stored in the air reservoir 153 is supplied to the connector 155 through the air brake (air brake) valve 154. Therefore, the compressed air flows in through the air duct of the bucket 5 and brakes the bucket 5 through the connector 155 connected to the air duct of the bucket 5.
However, the air compressor 151 is always operated because the air brake (air brake) system of the related art is required to always store air for braking compressed to a predetermined pressure or more. At this time, since the air compressor 151 receives and uses the power of the engine 2 through a pulley, a gear engagement structure, or the like of the engine 2, a part of the power of the engine 2 is used all the time, so that a power loss occurs all the time, and there is a problem that power to be used for performing work such as traction of a working machine or power transmission of a PTO may be unnecessarily consumed.
Disclosure of Invention
Problems to be solved by the invention
An object of the present invention is to provide an agricultural work vehicle including an air supply device that suppresses power loss caused by driving an air compressor (air compressor) all the time when air is pressurized and filled in an air reservoir (air tank), and that can prevent work execution from being affected by insufficient power caused by unnecessary power loss.
Further, the detailed objects of the present invention will be understood by those skilled in the art from the details described below.
Means for solving the problems
In order to solve the above-described object, an agricultural work vehicle 1 including an air supply device 200 according to an embodiment of the present invention includes: an air compressor (air compressor)210 for pressurizing air; an air reservoir (air tank)230 for storing air compressed by the air compressor 210; a pressure sensor 250 for measuring the pressure or atmospheric pressure of the air stored in the air reservoir 230; a controller 260 interrupting an operation of the air compressor 210 when the measured pressure exceeds a first reference value; and an air pressure regulator 220 for reducing the pressure of the air stored in the air storage 230 by discharging the air in the air pressure line system to the outside when the pressure of the air stored in the air storage 230 exceeds a second reference value, wherein the air pressure regulator 220 includes a pressure reducing valve 226 for reducing the pressure in the air pressure line system, and a measurement line 221 for measuring the pressure of the air stored in the air storage 230 or the atmospheric pressure is formed at a point where the pressure reducing valve 226 can measure the pressure of the air stored in the air storage 230.
In this case, the air pressure regulator 220 includes a pressure control valve 222, and the pressure control valve 222 may change a connection path according to the pressure of the air stored in the air reservoir 230 such that the pressure sensor 250 measures the pressure or the atmospheric pressure of the air stored in the air reservoir 230.
In addition, the pressure sensor 250 may measure the pressure of the air transmitted through the pressure control valve 222 by being connected to the measurement line 221.
In this case, the air compressor 210 is provided with an electrically controlled clutch controlled by an electric signal, and whether the air compressor 210 is operated or not can be controlled according to the electric signal of the controller 260.
In addition, when the engine 2 of the agricultural work vehicle 1 is operated, the air compressor 210 is operated, the pressure measured by the pressure sensor 250 is compared with the first reference value every predetermined time period, the air compressor 210 is stopped when the measured pressure exceeds the first reference value, and the air compressor 210 is operated when the measured pressure is less than the first reference value.
In addition, the pressure reducing valve 226 connects the pneumatic line system and the discharge line 225 by the pressure of the compressed air pressurized by the air compressor 210 and the internal pressure of the air reservoir 230 transmitted through the signal line 224, thereby reducing the pressure inside the pneumatic line system.
The pressure control valve 222 transmits the internal pressure of the air reservoir 230 to the signal line 224 by connecting the signal line 224 and the supply line 223 with the internal pressure of the air reservoir 230, or transmits the atmospheric pressure to the signal line 224 by connecting the signal line 224 and the discharge pipe 222 a.
Effects of the invention
According to the agricultural work vehicle 1 including the air supply device 200 of the embodiment of the present invention, in the process of pressurizing and filling the air into the air reservoir (air tank)230, by measuring the pressure of the filled air to control whether the air compressor (air compressor)210 is operating or not, it is possible to suppress power loss due to the air compressor (air compressor)210 always operating, and further possible to prevent power shortage due to unnecessary power consumption from affecting work execution.
Drawings
To assist understanding of the present invention, the accompanying drawings, which are a part of the detailed description, provide embodiments related to the present invention and, together with the summary of the invention, explain the technical ideas of the present invention.
Fig. 1 is a diagram illustrating an agricultural work vehicle 1 to which a general bucket 5 is attached.
Fig. 2 is a diagram illustrating an air supply device 200 in the general agricultural work vehicle 1.
Fig. 3 is a block diagram of an air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention.
Fig. 4 is a diagram for explaining an operation process of the air supply device 200 in the agricultural work vehicle 1 according to the embodiment of the present invention.
Fig. 5 is a diagram illustrating a measurement line 221 formed in the air pressure regulator 220 in the air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention.
Fig. 6 is a flowchart for explaining the operation of the air supply device 200 in the agricultural work vehicle 1 according to the embodiment of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, when reference numerals are given to components in each drawing, the same components are denoted by the same reference numerals as much as possible although they are denoted by different drawings. In addition, in explaining the present invention, when it is judged that a detailed description of a related known technology may make the gist of the embodiment disclosed in the present specification unclear, a detailed description thereof will be omitted. In addition, although preferred embodiments of the present invention will be described below, the technical idea of the present invention is not limited thereto, and of course, those of ordinary skill in the art can implement it.
Fig. 3 illustrates a block diagram of the air supply device 200 of the agricultural work vehicle 1 according to an embodiment of the present invention. As shown in fig. 3, an air supply device 200 of an agricultural work vehicle 1 according to an embodiment of the present invention is an air supply device 200 for braking a bucket 5 attached to the agricultural work vehicle 1, and may include: an air compressor (air compressor)210 that pressurizes air for braking the hanging bucket 5; an air reservoir (air tank)230 for storing air compressed by the air compressor 210; a pressure sensor 250 for detecting the pressure or atmospheric pressure of the air stored in the air reservoir 230; and a controller 260 interrupting the operation of the air compressor 210 when the measured pressure exceeds a first reference value.
Here, the first reference value may be determined in consideration of a pressure required for braking of the hitch 5 attached to the agricultural work vehicle 1.
Therefore, in the agricultural work vehicle 1 provided with the air supply device 200 according to the embodiment of the present invention, when the air reservoir (air tank)230 is filled with air by pressurizing the air in order to attach to the air brake (air brake) in the bucket 5 at the rear of the agricultural work vehicle 1 or by using the air gun (air gun) for cleaning the vehicle, or the like, the operation of the air compressor (air compressor)210 is controlled by measuring the pressure of the filled air, so that the power loss due to the constant operation of the air compressor (air compressor)210 can be suppressed, and further, the work execution can be prevented from being affected by the shortage of power due to unnecessary power consumption.
As shown in fig. 3, the air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention may further include an air pressure regulator 220 for reducing the pressure by discharging the air inside the air pressure line system to the outside when the pressure of the air stored in the air storage 230 exceeds a second reference value.
In more detail, a measuring line 221 for measuring the pressure of the air stored in the air reservoir 230 may be formed at the air pressure regulator 220. In this case, the air pressure regulator 220 may include a pressure reducing valve 226 formed of an unloading valve (unloading valve), a safety valve (safety valve), or the like, and the measuring line 221 may be formed at a position where the pressure of the air stored in the air storage 230 can be measured by the unloading valve or the like of the pressure reducing valve 226. Therefore, the pressure sensor 250 may measure the pressure of the air stored in the air reservoir 230 by being connected to the measurement line 221, and the controller 260 may collect data regarding the air pressure of the air reservoir 230 from the pressure sensor 250 and interrupt the operation of the air compressor 210 when the pressure of the air stored in the air reservoir 230 exceeds a first reference value, thereby effectively suppressing a power loss generated by the constant operation of the air compressor 210.
In addition, the air pressure regulator 220 may include a pressure control valve 222, and in this case, the pressure control valve 222 may change a connection path according to the pressure of the air stored in the air reservoir 230 such that the pressure sensor 250 measures the pressure of the air stored in the air reservoir 230 or the atmospheric pressure.
In addition, since the air compressor 210 of the agricultural work vehicle 1 according to the embodiment of the present invention may be provided with an electrically controlled clutch (not shown) controlled by an electric signal, whether the air compressor 210 is operated or not may be controlled by engaging (engaging) or disengaging (disengaging) the clutch (not shown) according to the electric control signal of the controller 260.
Fig. 4 is a diagram for explaining the operation of the air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention in further detail. Next, the air supply device 200 of the agricultural working vehicle 1 according to an embodiment of the present invention will be described in detail for each component with reference to fig. 4.
First, an air compressor (compressor)210 pressurizes air for braking or the like of the bucket 5 attached to the rear of the agricultural work vehicle 1, and the air compressed by the air compressor 210 is stored in the air storage (air tank) 230. Further, the pressure indicator 240 may be provided in the air reservoir 230 to indicate the pressure of the air stored in the air reservoir 230 and provide the pressure to the operator.
In this case, in the present invention, the air compressor 210 may use various compressors capable of compressing air at an appropriate pressure for braking the trailer 5. In the present invention, the air reservoir 230 is not particularly limited, and may be used as long as it can appropriately store air at a pressure required for braking the bucket 5.
In the air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention, the pressure sensor 250 measures the pressure of the air stored in the air storage 230. In this case, the present invention is not particularly limited to the pressure sensor 250, and may be used as long as it can measure the pressure of the air stored in the air reservoir 230 and used for braking the bucket 5.
As shown in fig. 4, the air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention may further include an air pressure regulator 220 for reducing the pressure by discharging the air inside the air pressure line system to the outside when the pressure of the air stored in the air storage 230 exceeds a second reference value, and more specifically, the air pressure regulator 220 may include a pressure reducing valve 226 including an unloading valve (unloading valve) or the like. Of course, the present invention is not limited to this, and the air pressure regulator 220 may use a pressure reducing valve 226 having various structures such as a safety valve (safety valve) that can reduce the pressure by discharging air when the pressure of air exceeds a reference value.
Therefore, the pressure sensor 250 may measure the pressure of the air stored in the air reservoir 230 by being connected to the air pressure regulator 220 including the pressure reducing valve 226 and the like ((a) of fig. 4).
Next, the pressure sensor 250 transmits the measured pressure data to the controller 260 using an electric signal or the like ((B) of fig. 4). More specifically, the pressure sensor 250 may transmit the measured pressure data to the controller 260 in various manners, such as analog electrical signals or conversion to digital signals and transmission.
Therefore, in the air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention, when the pressure of the air stored in the air storage 230 measured by the pressure sensor 250 exceeds a first reference value, the controller 260 controls the operation of the air compressor 210 by an electric control signal or the like ((C) of fig. 4).
Here, the first reference value may be determined in consideration of a pressure required for braking or the like of the hitch 5 attached to the agricultural work vehicle 1. More specifically, the first reference value may be determined by adding an appropriate margin to the pressure required for braking the bucket 5. Therefore, air having a pressure sufficient to brake the hook 5 or the like can be stored and maintained in the air reservoir 230 while preventing the air compressor 210 from being constantly driven, so that unnecessary power loss can be prevented.
In addition, more specifically, the controller 260 may be implemented by using an Electronic Control Unit (Electronic Control Unit) provided in the agricultural work vehicle 1 such as a tractor, or this may be implemented in various ways such as by an additional circuit.
Therefore, the controller 260 determines whether the air compressor 210 is driven or not by using the pressure data transmitted from the pressure sensor 250, and then generates a control signal according to the determined result to control the operation of the air compressor 210, thereby effectively suppressing a power loss caused by the constant operation of the air compressor 210.
In addition, the air compressor 210 may include an electrically controlled clutch (not shown) controlled by an electrical signal. Accordingly, the engagement (engage) and disengagement (disengage) of the clutch (not shown) may be controlled by an electric control signal generated from the controller 260, and thus the controller 260 may control the operation or non-operation of the air compressor 210 using the pressure of the air stored in the air storage 230 measured by the pressure sensor 250.
In the air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention, the air pressure regulator 220 may include a pressure reducing valve 226 formed of an unloading valve, a safety valve, or the like, and thus, when the pressure of the air stored in the air storage 230 exceeds a second reference value, the air in the air pressure line system is discharged to the outside to reduce the pressure, thereby protecting the air storage 230 and the air pressure line system. More specifically, in a case where the air reservoir 230 may be damaged due to the pressure of the air stored in the air reservoir 230 exceeding 100 pa (bar), the air supply device 200 of the agricultural work vehicle 1 according to the embodiment of the present invention first sets the first reference value to 90 pa (bar), so that the controller 260 prevents the air from being excessively pressurized by stopping the operation of the air compressor 210 when the pressure of the air stored in the air reservoir 230 reaches 90 pa (bar). However, if the air compressor 210 is not stopped and continuously driven due to an error of the controller 260, the pressure of the air reservoir 230 may exceed 90 pa (bar) and reach 100 pa (bar), and thus the air reservoir 230 may be damaged, and in the present invention, the second reference value is set to 95 pa (bar), whereby the pressure reducing valve 226 is adjusted by discharging the air inside the air pressure line system to the outside when the pressure of the air stored in the air reservoir 230 reaches 95 pa (bar) due to an error of the controller 260, etc., to prevent the air reservoir 230 or the air pressure line system from being damaged. In this case, the set values of the first reference value and the second reference value may be determined in consideration of the operating environment and the like, and thus may be different from each other or may be set to the same value as needed.
A measurement line 221 for measuring the pressure of the air stored in the air reservoir 230 may be formed in the relief valve or the like of the pressure reducing valve 226.
Fig. 5 more specifically illustrates the structure of the air pressure regulator 220 formed with the measurement line 221 of an embodiment of the present invention.
As shown in fig. 5, in the air supply device 200 provided in the agricultural work vehicle 1 according to the embodiment of the present invention, the air pressure regulator 220 may include: a pressure reducing valve 226 for reducing the pressure inside the pneumatic line system by connecting the pneumatic line system to the discharge line 225 by the pressure of the compressed air pressurized by the air compressor 210 and the air reservoir internal pressure transmitted via the signal line 224; and a manual valve 227 for discharging the pressure in the pneumatic line system by a manual operation of a user. Therefore, the pressure in the pneumatic circuit system can be prevented from being excessively high.
A measurement line 221 (fig. 5 a) may be formed in the pressure reducing valve 226, and the measurement line 221 may be formed at a position where the pressure of the air stored in the air reservoir 230 can be measured, such as an unloading valve of the pressure reducing valve 226. Accordingly, the pressure sensor 250 may measure the pressure of the air stored in the air reservoir 230 by being connected to the measurement line 221 and transmit data regarding the air pressure of the air reservoir 230 to the controller 260.
In this case, as shown in fig. 5, the air pressure regulator 220 may include a pressure control valve 222, and in this case, the pressure control valve 222 may change a connection path according to the pressure of the air stored in the air reservoir 230 such that the pressure sensor 250 measures the pressure of the air stored in the air reservoir 230 or the atmospheric pressure. That is, the pressure control valve 222 may transmit the internal pressure of the air reservoir 230 to the signal line 224 by connecting the signal line 224 and the supply line 223 by the internal pressure of the air reservoir 230, or transmit the atmospheric pressure to the signal line 224 by connecting the signal line 224 and the first line 222a (discharge pipe).
For example, when the pressure of the air stored in the air reservoir 230 is less than the third reference value, the first line 222a (discharge line) of the pressure control valve 222 operated by the pressure of the air stored in the air reservoir 230 is connected to the signal line 224, so that the pressure sensor 250 can measure the pressure of the air (for example, atmospheric pressure) less than the third reference value. When the pressure of the air stored in the air reservoir 230 is greater than the third reference value, the second line 222b of the pressure control valve 222 operated by the pressure of the air stored in the air reservoir 230 is connected to the supply line 223 and the signal line 224, so that the pressure sensor 250 can measure the pressure of the air greater than the third reference value (for example, the pressure of the air stored in the air reservoir 230).
In particular, as shown in fig. 5, by additionally forming a measurement line 221 on the pressure reducing valve 226 constituting the air pressure regulator 220, measuring the pressure of the air stored in the air storage 230 only by a simple structural change of attaching the pressure sensor 250 to the measurement line 221, and controlling whether the air compressor 210 is driven or not, it is possible to very effectively suppress a power loss accompanying a constant operation of the air compressor 210 by a minimum structural change, and it is possible to appropriately prevent a power shortage due to unnecessary power consumption, which makes it difficult to perform the operation.
Finally, fig. 6 illustrates a flowchart for explaining the operation of the air supply device 200 in the agricultural work vehicle 1 according to the embodiment of the present invention. Next, the operation of the air supply device 200 in the agricultural work vehicle 1 according to the embodiment of the present invention will be described in more detail with reference to fig. 6.
First, when the operator starts the agricultural work vehicle 1 such as a tractor, the air compressor 210 is operated S110 while the engine 2 is driven.
Next, the pressure sensor 250 measures the pressure of the air pressurized by the air compressor 210 and stored in the air storage 230 or the atmospheric pressure S120. In addition, the pressure sensor 250 transmits the measured air pressure data to the controller 260.
Accordingly, the controller 260 determines whether the pressure of the air stored in the air reservoir 230 measured by the pressure sensor 250 or the atmospheric pressure exceeds a first reference value S130.
At this time, since the measured pressure of the air exceeds the first reference value, the air reservoir 230 is in a state where the stored air has a sufficient pressure, and thus the controller 260 interrupts the driving of the air compressor 210S 140.
In contrast, when the measured pressure of the air is less than the first reference value, since the pressure of the air stored in the air storage 230 is in a state of being less than the pressure required for braking the hook 5, the driving S150 of the air compressor 210 is continuously maintained in the controller 260.
If the driving of the air compressor 210 is interrupted at the stage S140 when the measured pressure of the air exceeds the first reference value at the stage S130, the pressure of the air stored in the air storage 230 is decreased due to leakage of the air stored in the air storage 230 or the like with the lapse of time, and if the pressure of the air stored in the air storage 230 measured (S120) by the pressure sensor 250 is less than the first reference value S130, the controller 260 operates the air compressor 210 with a control signal S150.
Accordingly, the pressure of the air stored in the air reservoir 230 is increased again, and if the pressure of the air stored in the air reservoir 230 exceeds the first reference value while the air compressor 210 is operated during the predetermined time period of the increase again, the controller 260 prevents unnecessary power loss by interrupting the driving of the air compressor 210 again.
Therefore, in the agricultural work vehicle 1 provided with the air supply device 200 according to the embodiment of the present invention, in the process of filling the air reservoir 230 with pressurized air for air braking (air brake) or the like of the hitch 5 attached to the rear side of the agricultural work vehicle 1, the pressure of the filled air is measured to continuously control whether the air compressor 210 is operating or not, and thus, not only can the power loss caused by the air compressor 210 always operating be effectively prevented, but also the power shortage due to unnecessary power consumption can be prevented, which causes a problem in the work execution.
The above description is given only for the purpose of illustrating the technical idea of the present invention, and various modifications, alterations, and substitutions can be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments and drawings disclosed in the present invention are not intended to limit the technical idea of the present invention, but to illustrate it, and the scope of the technical idea of the present invention is not limited to the embodiments and drawings. The scope of the present invention should be construed by the scope of the appended claims, and all technical ideas within the range equivalent thereto should be included in the scope of the present invention.

Claims (4)

1. An agricultural work vehicle provided with an air supply device, the air supply device being characterized by comprising:
an air compressor for pressurizing air;
an air reservoir for storing air compressed by the air compressor;
a pressure sensor for measuring a pressure of air stored in the air storage or an atmospheric pressure;
a controller interrupting operation of the air compressor when the pressure measured by the pressure sensor exceeds a first reference value; and
an air pressure regulator for reducing the pressure of the air stored in the air storage when the pressure exceeds a second reference value by discharging the air in the air pressure line system to the outside,
the air pressure regulator includes a pressure control valve and a pressure reducing valve,
in the air pressure regulator, a measurement line for measuring the pressure or the atmospheric pressure of the air stored in the air storage is formed at a position where the pressure reducing valve can measure the pressure of the air stored in the air storage,
a first line of the pressure control valve is connected to a signal line connected to the pressure sensor in a case where the pressure of the air stored in the air reservoir is less than a third reference value, whereby the pressure sensor measures atmospheric pressure,
in a case where the pressure of the air stored in the air storage is greater than the third reference value, the second line of the pressure control valve is connected to a supply line and the signal line, whereby the pressure sensor measures the pressure of the air stored in the air storage by being connected to the measurement line.
2. The agricultural work vehicle according to claim 1, wherein the air supply device is provided with a fan,
the pressure sensor measures the pressure of the air passing through the pressure control valve.
3. The agricultural work vehicle according to claim 1, wherein the air supply device is provided with a fan,
the air compressor is provided with an electric control mode clutch controlled by an electric signal, and the operation of the air compressor is controlled according to the electric control signal of the controller.
4. The agricultural work vehicle according to claim 1, wherein the air supply device is provided with a fan,
when an engine of the agricultural work vehicle is operated, the air compressor is operated,
comparing the pressure measured by the pressure sensor with the first reference value every prescribed time period,
interrupting the air compressor when the pressure measured by the pressure sensor exceeds the first reference value,
operating the air compressor when the pressure measured by the pressure sensor is less than the first reference value.
CN201880003280.8A 2018-02-13 2018-12-14 Agricultural work vehicle with air supply device Active CN110382316B (en)

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KR1020180154407A KR102557555B1 (en) 2018-02-13 2018-12-04 Agricultural working machine with air supply device
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PCT/KR2018/015892 WO2019160230A1 (en) 2018-02-13 2018-12-14 Agricultural work vehicle having air supply device

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