JP2013071835A - Work vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work vehicle capable of further reducing the exhaust amount of carbon dioxide during the operation of a work device by accurately acquiring the reduced exhaust amount of carbon dioxide during the operation of the work device.SOLUTION: The reduced exhaust amount of carbon dioxide against the exhaust amount of carbon dioxide obtained when an engine E as a power source is operated successively for working in the operation of a high-lift work device 20 is acquired, and the acquired reduced exhaust amount of carbon dioxide is displayed on a display part 31a. Since the reduced exhaust amount of carbon dioxide in the operation of the high-lift work device 20 can be accurately acquired, the target value of the reduced exhaust amount of carbon dioxide can be definitely set, and the exhaust amount of carbon dioxide can be further reduced in the operation of the high-lift work device 20.

Description

  The present invention relates to a work vehicle including a work device that is driven by power from a power source, such as an aerial work vehicle.

  In recent years, the main cause of global warming is considered to be the emission of greenhouse gases such as carbon dioxide. For this reason, efforts are being made in various industries to reduce carbon dioxide emissions as a measure against global warming.

  Therefore, as a work vehicle for reducing carbon dioxide emission, a vehicle in which a hydraulic pump of a hydraulic unit for driving a work device is driven by an engine having an idle stop function is known. Further, as another work vehicle for reducing carbon dioxide emission, a vehicle in which a hydraulic pump of a hydraulic unit is driven by an electric motor is known (see, for example, cited document 1).

  In addition, each industry evaluates its contribution to the reduction of carbon dioxide emissions by quantifying the degree of achievement of carbon dioxide emission reduction.

JP 2011-157589 A

  However, it is clear that the work vehicle has reduced carbon dioxide emissions compared to the case where the engine is continuously driven to perform work, but what is the emission reduction amount? It has not been calculated, and the degree of achievement of carbon dioxide emission reduction cannot be accurately evaluated.

  An object of the present invention is to provide a work vehicle capable of obtaining an accurate carbon dioxide emission reduction amount in the work of the work device and further reducing the carbon dioxide emission amount in the work of the work device. There is.

  In order to achieve the above object, according to the present invention, in a work vehicle including a work device that performs a predetermined work using the power of a power source, the engine is continuously operated as a power source during the work of the work device. A reduction amount acquisition means for acquiring the carbon dioxide emission reduction amount relative to the carbon dioxide emission amount when the work is performed, a display unit for displaying the reduction amount of the carbon dioxide emission acquired by the reduction amount acquisition means, It has.

  Thereby, the emission reduction amount of the carbon dioxide in a working device can be acquired correctly.

  According to the present invention, since it is possible to accurately obtain the carbon dioxide emission reduction amount in the work of the work device, it is possible to clearly set the target value of the carbon dioxide emission reduction amount. It becomes possible to further reduce carbon dioxide emissions. In addition, it becomes possible to raise awareness of global warming countermeasures for workers of the work equipment.

It is a side view of an aerial work vehicle showing a first embodiment of the present invention. It is a block diagram which shows a control system. It is a figure which shows a display part. It is a flowchart which shows a 1st emission reduction amount acquisition process. It is a flowchart which shows a 2nd emission reduction amount acquisition process. It is a block diagram which shows the control system of 2nd Embodiment of this invention. It is a figure which shows the display part of 3rd Embodiment of this invention. It is a figure which shows a display part.

  1 to 5 show a first embodiment of the present invention.

  As shown in FIG. 1, an aerial work vehicle 1 as a work vehicle according to the present invention includes a vehicle 10 for traveling on a road or the like, an aerial work device 20 as a work device for performing a high work, It has.

  The vehicle 10 has wheels 11 on both the left and right sides of the front side and the rear side, and travels using the engine as a power source. On the front side of the vehicle 10, a cabin 12 for performing operations related to traveling of the vehicle 10 is provided. Outriggers 13 are provided on the left and right sides of the front side and the rear side of the vehicle 10. The outrigger 13 is provided so as to be movable outward in the width direction of the vehicle, and can be extended downward by a jack cylinder (not shown). The outrigger 13 stably supports the vehicle 10 with respect to the ground by grounding the lower end.

  The aerial work device 20 is provided at a rear portion of the vehicle 10 so as to be able to turn, a boom 22 provided so as to be able to move up and down with respect to the turntable 21, and a telescopic boom 22, and a tip of the boom 22. And a basket 23 provided in the container.

  The swivel base 21 is configured to be turnable with respect to the vehicle 10 by a ball bearing type or roller bearing type turning circle (not shown), and is configured to turn by driving of a turning hydraulic motor (not shown). Has been.

  The boom 22 is composed of a plurality of boom members, and is configured in a multistage manner in which a boom member adjacent to the distal end side can be accommodated inside the boom member. A hydraulic cylinder (not shown) is provided in the most proximal end boom member (base boom) 22a, and the boom 22 is expanded and contracted by expansion and contraction of the hydraulic cylinder. Further, the most proximal end boom member 22 a has a proximal end portion connected to the bracket 21 a of the swivel base 21 so as to be rotatable in the vertical direction. A hydraulic cylinder 22b is connected between the center of the boom member 22a in the extending direction and the swivel base 21, and the boom 22 is raised and lowered by the expansion and contraction of the hydraulic cylinder 22b.

  Actuators such as a jack cylinder, a turning hydraulic motor, a boom extending / contracting hydraulic cylinder, and a hoisting hydraulic cylinder 22b are driven by hydraulic oil discharged from a hydraulic pump P (not shown in FIG. 1). . The hydraulic pump P is driven by an engine E transmitted through a PTO (Power Take Off) mechanism 24 or an electric motor M (not shown in FIG. 1). Here, the engine E as a power source used for driving the vehicle 10 and driving the aerial work apparatus 20 is, for example, when the traveling vehicle 10 is stopped or when the operation of the aerial work apparatus 20 is stopped. In addition, it has an idle stop function for stopping driving.

Further, as shown in FIG. 2, the aerial work vehicle 1 includes a controller 30 for performing control related to the operation of the aerial work apparatus 20.
The controller 30 has a CPU, ROM, and RAM. When the controller 30 receives an input signal from a device connected to the input side, the CPU reads a program stored in the ROM based on the input signal, and stores a state detected by the input signal in the RAM. The output signal is transmitted to a device connected to the output side.

  The ROM of the controller 30 stores the fuel consumption when starting the engine E, the fuel consumption per unit time when the engine E is in an idle state, and the units when the aerial work device 20 is driven by the engine E. Data relating to fuel consumption per hour and carbon dioxide emission per liter of fuel used when the engine E is driven are stored. Here, since the fuel consumption amount varies depending on the type of the vehicle 10, a plurality of fuel consumption amount data may be stored in the ROM and selected when the aerial work apparatus 20 is assembled.

  The controller 30 is provided on the rear surface side of the vehicle 10 and the handrail portion of the basket 23, respectively, and a lower operation unit 31 and an upper operation unit 32 for operating the aerial work device 20, a hydraulic pump P, each actuator, Data between a control valve 33 provided in the hydraulic oil flow path, an HDD (Hard Disk Drive) 34 as a storage device for storing the amount of carbon dioxide reduction described later, and an external device such as a personal computer. Are connected to the USB 35, the engine E, and the PTO mechanism 24.

  The lower operation unit 31 displays a load state of the aerial work apparatus 20 or displays a reduction amount of carbon dioxide, which will be described later, and an aerial work apparatus 20 for driving the aerial work apparatus 20 electrically. It has an electric drive switch 31b and operation buttons and operation levers related to the operation of the aerial work apparatus. As shown in FIG. 3, the display unit 31 a includes a plurality of 7-segment displays, and is configured to display a 4-digit numerical value based on a signal transmitted from the controller 30.

  In the work vehicle configured as described above, the aerial work vehicle 1 performs the work by continuously operating the engine E when the work of the aerial work device 20 is performed using the engine E as a drive source. A first emission reduction amount acquisition process is performed to calculate how much carbon dioxide emission has been reduced as compared with the case where it is performed. The operation of the controller 30 at this time will be described with reference to the flowchart of FIG.

(Step S1)
In step S1, the CPU determines whether or not the PTO mechanism 24 is on. If it is determined that the PTO mechanism 24 is on, the process proceeds to step S2, and if it is not determined that the PTO mechanism 24 is on, the first emission reduction amount acquisition process is terminated.

(Step S2)
If it is determined in step S1 that the PTO mechanism 24 is in an on state, or if it is not determined in step S8 that an operation for turning off the PTO mechanism 24 has been performed, the CPU performs an idle stop function in step S2. It is determined whether the engine E has stopped. If it is determined that the engine E has stopped, the process proceeds to step S3. If it is not determined that the engine E has stopped, the process proceeds to step S8.

(Step S3)
When it is determined in step S2 that the engine E has been stopped, in step S3, the CPU determines whether or not the measurement of time since the engine E has been stopped is temporarily stopped. If it is not determined that the process is temporarily stopped, the process proceeds to step S4. If it is determined that the process is temporarily stopped, the process proceeds to step S5.

(Step S4)
If it is not determined in step S3 that the time measurement since the engine E has been stopped is temporarily stopped, the CPU performs time measurement since the engine E has been stopped in step S4, and step S6. Move processing to.

(Step S5)
If it is determined in step S3 that the time measurement since the engine E has stopped is paused, the CPU in step S5 releases the temporary stop and measures the time since the engine E stopped. The process is resumed, and the process proceeds to step S6.

(Step S6)
In step S6, the CPU determines whether or not the idle stop function is canceled and the engine E is restarted. If it is determined that the engine E has restarted, the process proceeds to step S7. If it is not determined that the engine E has restarted, the process proceeds to step S8.

(Step S7)
If it is determined in step S6 that the engine E has been restarted, in step S7, the CPU temporarily stops measuring time and moves the process to step S8.

(Step S8)
If it is not determined in step S2 that the engine E has stopped, if it is not determined in step S6 that the engine E has restarted, or if time measurement is temporarily stopped in step S7, the CPU in step S8 Determines whether an operation to turn off the PTO mechanism 24 has been performed. If it is determined that an operation to turn off the PTO mechanism 24 has been performed, the process proceeds to step S9. If it is not determined that an operation to turn off the PTO mechanism 24 has been performed, the process returns to step S2.

(Step S9)
When it is determined in step S8 that the operation for turning off the PTO mechanism 24 has been performed, in step S9, the CPU ends the time measurement and moves the process to step S10.

(Step S10)
In step S10, the CPU calculates a carbon dioxide emission amount when the operation of the engine E is continued in the idle state for the measured time, and moves the process to step S11.

(Step S11)
In step S11, the CPU calculates a carbon dioxide emission amount corresponding to the number of times the engine E is restarted, and moves the process to step S12.

(Step S12)
In step S12, the CPU stores the numerical value obtained by subtracting the carbon dioxide emission amount calculated in step S11 from the carbon dioxide emission amount calculated in step S10 in the HDD 34 as an emission reduction amount, and ends the first emission reduction amount acquisition unit. To do.

  Next, when the work of the aerial work apparatus 20 is performed using battery power as a drive source, how much carbon dioxide is discharged compared to the case where the engine E is continuously operated to perform the work. A second emission reduction amount acquisition process for calculating whether the amount has been reduced is performed. The operation of the controller 30 at this time will be described with reference to the flowchart of FIG.

(Step S21)
In step S21, the CPU determines whether or not the electric drive switch 31b is on. If it is determined that the electric drive switch 31b is in the on state, the process proceeds to step S22. If it is determined that the electric drive switch 31b is not in the on state, the second emission reduction amount acquisition process is terminated.

(Step S22)
If it is determined in step S21 that the electric drive switch 31b is in an on state, or if it is not determined in step S25 that the electric drive switch 31b is in an off state, the CPU in step S22 It is determined whether or not the time since 31b is turned on is being measured. If it is not determined that the time is being measured, the process proceeds to step S23. If it is determined that the time is being measured, the process proceeds to step S24.

(Step S23)
If it is not determined in step S22 that the time is being measured, in step S23, the CPU starts measuring the time after the electric drive switch 31b is turned on, and the process proceeds to step S24.

(Step S24)
When it is determined in step S22 that the time is being measured, or when the time measurement is started in step S23, in step S24, the CPU measures the time during which the aerial work device 20 is being driven. The processing is moved to S25.

(Step S25)
In step S25, the CPU determines whether or not the electric drive switch 31b is in an off state. If it is determined that the electric drive switch 31b is off, the process proceeds to step S26, and if it is not determined that the electric drive switch 31b is off, the process returns to step S22.

(Step S26)
When it is determined in step S25 that the electric drive switch 31b is in the off state, in step S26, the CPU finishes measuring the time after the electric drive switch 31b is in the on state, and performs the process in step S27. Move.

(Step S27)
In step S27, the CPU calculates the carbon dioxide emission amount when the engine working device 20 is driven by driving the engine E during the measured driving time of the working tool 20 and moves the process to step S28.
Specifically, by converting the driving speed of the aerial work apparatus 20 into the number of revolutions of the engine E, and summing up the carbon dioxide emissions corresponding to the driving time of the aerial work apparatus 20 at each revolution number of the engine E. calculate.

(Step S28)
In step S28, the CPU emits carbon dioxide when the operation of the engine E is continued in the idle state for the time obtained by subtracting the driving time of the aerial work device 20 from the time when the measured electric drive switch 31b is on. Is calculated, and the process proceeds to step S29.

(Step S29)
In step S29, the CPU stores a numerical value obtained by adding the carbon dioxide emission amount calculated in step S27 and the carbon dioxide emission amount calculated in step S28 in a storage device such as a RAM as an emission reduction amount, and stores the second emission reduction amount. The acquisition unit is terminated.

  The emission reduction amount stored by the first emission reduction amount acquisition process and the second emission reduction amount acquisition process is stored in the HDD 34 as an emission reduction amount every day.

The emission reduction amount stored in the HDD 34 can be displayed on the display unit 31 a by performing a predetermined operation on the operation buttons of the lower operation unit 31.
Specifically, when a predetermined operation is performed on the operation button, the character CO2 is displayed on the display unit 31a. Three seconds after the character CO2 is displayed on the display unit 31a, the date is displayed on the display unit 31a, for example, “0624” (June 24). Three seconds after the date is displayed on the display unit 31a, the carbon dioxide emission reduction amount is displayed on the display unit 31a, for example, “0258” (2.58 kg).
Further, by a predetermined operation of the operation button of the lower operation unit 31, it is possible to display the emission reduction amount of carbon dioxide on the display unit 31a by going back in date.

  Further, the daily emission reduction amount data stored in the HDD 34 can be transmitted to an external device such as a personal computer via the USB 35, and the emission reduction amount data can be managed in the external device.

  As described above, according to the work vehicle of the present embodiment, when working at the aerial work apparatus 20, the carbon dioxide emission relative to the carbon dioxide emission when the engine E is continuously operated as a power source and the work is performed. The emission reduction amount of carbon is acquired, and the acquired reduction amount of carbon dioxide emission is displayed on the display unit 31a. Thereby, since the emission reduction amount of carbon dioxide in the work of the aerial work apparatus 20 can be obtained accurately, the target value of the emission reduction amount of carbon dioxide can be clearly set, and the aerial work apparatus 20 This makes it possible to further reduce the amount of carbon dioxide emissions during the work. In addition, it becomes possible to improve the awareness of measures against global warming for the workers of the high place working device 20.

  Further, when the work at the aerial work device 20 is performed by the engine E having the idle stop function, the engine E is discharged if the engine E is driven during the stop time of the engine E during the work at the high work device 20. Carbon dioxide emissions are calculated as emission reductions. Thereby, since the amount of carbon dioxide emission reduction by the idle stop function can be accurately calculated, it is possible to improve the reliability of the achievement degree of the carbon dioxide emission reduction.

  In addition, when the work of the aerial work apparatus 20 is performed by the electric motor M driven by the battery power, the engine E is continuously driven as a power source to perform the work of the high work apparatus 20 to be discharged. The amount of carbon dioxide emitted is calculated as an emission reduction. Thereby, since the carbon dioxide emission reduction amount of the power-driven aerial work apparatus 20 can be accurately calculated, it is possible to improve the reliability of the achievement level of the carbon dioxide emission amount.

  Further, the carbon dioxide emission reduction data is stored in the HDD 34, and the data stored in the HDD 34 can be transmitted to an external device via the USB 35. Thereby, it becomes possible to manage the data of the carbon dioxide emission reduction amount in the external device, and the data of the carbon dioxide emission reduction amount can be effectively used.

  FIG. 6 shows a second embodiment of the present invention. In addition, the same code | symbol is attached | subjected and shown to the component similar to the said embodiment.

  As shown in FIG. 6, the controller 30 of the aerial work vehicle 1 includes data on the amount of carbon dioxide emission reduction in a centralized management device such as a server instead of the USB 35 of the first embodiment. A wireless communication device 36 for transmitting via is connected.

  In the work vehicle configured as described above, the data stored in the HDD 34 is transmitted to the central management device by the wireless communication device 36, and the data stored in the HDD 34 can be collectively managed in the central management device.

  As described above, according to the work vehicle of the present embodiment, the carbon dioxide emission reduction data is stored in the HDD 34, and the data stored in the HDD 34 can be transmitted to the centralized management device by the wireless communication device 36. This makes it possible to collectively manage the carbon dioxide emission reduction data in the centralized management apparatus, and to effectively use the carbon dioxide emission reduction data.

  7 and 8 show a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected and shown to the component similar to the said embodiment.

  The lower operation unit 31 of the aerial work vehicle 1 has a display unit 31c formed of a liquid crystal display, a plasma display, or the like instead of the display unit 31a formed of a 7-segment display.

  In the work vehicle configured as described above, the data stored in the HDD 34 is displayed on the display unit 31c as shown in FIG. Further, as shown in FIG. 8, the emission reduction amount of carbon dioxide is displayed on the display unit 31c every day in the month.

  As described above, according to the work vehicle of the present embodiment, it is possible to more accurately grasp the amount of carbon dioxide emission reduction in the work of the aerial work apparatus 20, and therefore, further dioxide dioxide in the work of the high work apparatus 20. It will be possible to reduce carbon emissions.

  In the above embodiment, the present invention is applied to the aerial work vehicle 1. However, the present invention is not limited to this, and the present invention is applied to a work vehicle such as a vehicle transport vehicle, a rail land vehicle, and a bridge inspection vehicle. Applicable.

  In the above embodiment, the engine E having the idle stop function and the aerial work device 20 that can be driven by the power of the battery have been described, but the present invention is not limited to this. For example, the present invention may be applied to an engine E having an idle stop function or a work vehicle having a work device that is driven only by battery power, and energy consumption compared to a work device that continuously operates the engine. The present invention can be applied to any work device that is driven by a small power source.

  DESCRIPTION OF SYMBOLS 1 ... High altitude work vehicle, 20 ... High altitude work apparatus, 24 ... PTO mechanism, 30 ... Controller, 31 ... Lower operation part, 31a ... Display part, 31b ... Electric drive switch, 31c ... Display part, 34 ... HDD, 35 ... USB, 36 ... Wireless communication device, E ... Engine.

Claims (4)

In a work vehicle equipped with a work device that performs a predetermined work by the power of a power source,
A reduction amount acquisition means for acquiring a carbon dioxide emission reduction amount with respect to a carbon dioxide emission amount when the engine is continuously operated as a power source during the work of the work device;
A work vehicle comprising: a display unit that displays a reduction amount of the carbon dioxide emission acquired by the reduction amount acquisition means. The power source is an engine having an idle stop function for stopping the engine while the work device is stopped.
The reduction amount acquisition means calculates, as the emission reduction amount, the amount of carbon dioxide emitted when the engine E is driven during the engine stop time during work by the work device. The work vehicle as described in. The power source is an electric motor driven by battery power,
The reduction amount acquisition means calculates, as an emission reduction amount, an estimated emission amount of carbon dioxide emitted when the work apparatus is operated by continuously operating the engine as a power source. The work vehicle according to 1. Data storage means for storing data on the reduction amount of carbon dioxide acquired by the reduction amount acquisition means;
The work vehicle according to any one of claims 1 to 3, further comprising data transmission means for transmitting data stored in the data storage means to an external device.

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