WO2011024897A1 - 作業機械の遠隔管理システム - Google Patents
作業機械の遠隔管理システム Download PDFInfo
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- WO2011024897A1 WO2011024897A1 PCT/JP2010/064485 JP2010064485W WO2011024897A1 WO 2011024897 A1 WO2011024897 A1 WO 2011024897A1 JP 2010064485 W JP2010064485 W JP 2010064485W WO 2011024897 A1 WO2011024897 A1 WO 2011024897A1
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- work
- work mode
- mode
- command
- base station
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2246—Control of prime movers, e.g. depending on the hydraulic load of work tools
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/205—Remotely operated machines, e.g. unmanned vehicles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2054—Fleet management
Definitions
- the present invention relates to a remote management system for a work machine that remotely manages the work machine at a base station located away from the work machine.
- Work machines such as hydraulic excavators are equipped with hydraulic pumps that supply pressure oil to hydraulic actuators (hydraulic cylinders, hydraulic motors).
- This hydraulic pump uses an engine as a drive source.
- This engine is electronically controlled.
- the engine controller that performs the electronic control includes a storage unit that stores an upper limit of a target rotational speed of the engine set in advance and a work mode associated with each upper limit, and a target rotation stored by the storage unit Control means for selecting one of the upper limit of the number and controlling the engine speed.
- a switch as work mode command means for commanding a work mode operated by an operator is provided in the cab of the work machine.
- the engine controller selects an upper limit of the target rotational speed corresponding to the work mode in accordance with a command from the switch. In other words, by selecting the upper limit of the target engine speed from multiple types according to the engine output required for the work to be performed by the work machine, waste of engine output is reduced and the work machine is economically operated. It can be used.
- a means has been devised for an administrator such as an owner of a work machine to restrict the selection of a work mode by an operator.
- This means is provided in the driver's cab together with the switch as the work mode command means described above and is capable of inputting a personal identification number, and a state permitting the change of the operational mode triggered by the input of the personal identification number by the operation panel, And a change management unit that sets the controller to one of the states that restrict the change of the work mode.
- Patent Document 1 Conventionally, some remote management systems for work machines manage a control program and data of a control device provided in a hydraulic excavator with a server of a base station via a communication line.
- the control device of the hydraulic excavator has a communication device (hereinafter referred to as “machine side communication device”), and the base station has a server, the number of the hydraulic excavator, the model of each unit, and the standard for each model.
- a storage device storing control programs and data, control programs corresponding to various attachments for each model, data, and the like.
- the control device of the hydraulic excavator transmits information related to the replacement of the attachment by the machine side communication device to the communication device (hereinafter referred to as “base station side communication device”) provided in the server.
- the server that has received this information uses the information stored in the storage device to identify the excavator number that is the transmission source of the information related to the attachment replacement, and corresponds to the attachment after the specified excavator replacement.
- the control program and data are selected, and the control program and data are transmitted to the machine side communication device of the transmission excavator by the base station side communication device, and the control program and data are rewritten by the hydraulic excavator control device. . (See Patent Document 2)
- An object of the present invention is to provide a remote management system for a work machine that can remotely manage the upper limit of the engine speed in preference to the setting of the upper limit by an operator.
- the work machine remote management system is configured as follows.
- a work machine remote management system including a work machine and a base station according to the present invention, wherein the work machine is an engine that is a drive source of a hydraulic pump that discharges pressure oil supplied to a plurality of hydraulic actuators.
- control means for controlling the rotational speed of the engine, and machine-side work mode command means for selectively instructing the control means to a plurality of types of work modes, the control means comprising the plurality of types Target rotational speed storage means for storing in advance the upper limit of the target rotational speed of the engine associated with each of the work modes, and one of the upper limits of the target rotational speed stored by the target rotational speed storage means,
- a target rotational speed calculation means for selecting a target rotational speed that is selected according to the work mode commanded by the side work mode command means and that is equal to or less than the selected upper limit, and a machine side communication device, Is a work mode storage means for storing in advance the type of work mode of the work machine, a base station side work mode command means for selecting a desired work
- a desired work mode is selected using the machine-side work mode command means and the control means is used.
- the target rotational speed calculation means of the control means selects one of the upper limits of the target rotational speed stored by the target rotational speed storage means according to the work mode commanded by the machine side work mode command means, Calculate the target speed below the selected upper limit.
- a desired work mode is selected using the base station side work mode command means, and the work mode stored in the work mode storage means is stored. One of these is selected.
- the work mode management means transmits the selected work mode to the machine side communication apparatus by the base station side communication apparatus, whereby the work mode is commanded to the control means.
- the target rotational speed calculation means enters a state of calculating the target rotational speed based on the work mode commanded by the work mode management means on the base station side. Therefore, the upper limit of the engine speed can be remotely managed in preference to the upper limit setting by the operator.
- the work machine remote management system is the work machine remote management system according to [[1]], in which the control means has a work mode commanded by the machine-side work mode command means.
- Information is set to be transmitted to the base station side communication device by the machine side communication device, the base station is based on the information on the working mode of the control means received by the base station side communication device, Work mode suitability determining means for determining suitability of the work mode commanded to the control means, the work mode suitability determining means is more than the work mode commanded by the base station side work mode command means. It is determined whether or not the work mode of the control means is a work mode having a higher upper limit of the target rotational speed.
- the work mode commanded to the control means by the means is determined to be inappropriate, and the work mode management means determines that the work mode of the control means is determined to be inappropriate by the work mode suitability determination means.
- the operation mode commanded by the base station side work mode command means is set to command the control means.
- the work mode of the control means has a higher upper limit of the target rotational speed than the work mode commanded by the base station side work mode command means.
- the work mode management means controls the work mode commanded by the base station side work mode command means. Command to the means.
- the upper limit of the engine speed can be reduced, and therefore the amount of fuel used per unit time in the engine can be reduced.
- the work machine remote management system is the work machine remote management system according to “[2]”, wherein the control means calculates the fuel consumption of the engine per unit time.
- the machine-side communication device further includes use amount calculation means, and information on the work mode instructed by the machine-side work mode instruction means and information on the fuel use amount calculated by the fuel use amount calculation means.
- the fuel usage is set to transmit to the base station side communication device, and the base station stores the lower limit of the fuel usage per unit time that is set in advance in association with each of a plurality of types of work modes.
- the work mode management means determines that the fuel use amount of the engine is inappropriate by the fuel use amount suitability judging means, and the work mode suitability judging means judges the work mode of the control means. Is determined so as to instruct the control means of the work mode instructed by the base station side work mode instructing means.
- the fuel usage calculation means calculates the lower limit of the fuel usage corresponding to the work mode of the control means stored in the fuel usage storage means. It is determined by the fuel use amount suitability determining means that the amount of fuel used is small, that is, the fuel use amount is inappropriate, and the control means is more than the work mode commanded by the base station side work mode command means.
- the work mode management is performed when it is determined by the work mode suitability determining means that the commanded work mode is a work mode having a higher upper limit of the target rotational speed, that is, the work mode of the control means is inappropriate.
- the means instructs the control means of the work mode commanded by the base station side work mode command means. As a result, the amount of fuel used per unit time can be reliably reduced.
- the work machine remote management system is the work machine remote management system according to “[2]”, in which the work machine includes load pressure detection means for detecting a load pressure of the hydraulic pump. And a plurality of operation command detection means for detecting an operation command for each of the plurality of hydraulic actuators, wherein the target rotational speed calculation means includes the load pressure detected by the load pressure detection means, Based on the motion command detected by each of the motion command detection means, is set to calculate a target rotational speed below the upper limit of the target rotational speed associated with the work mode, the control means, Information on the work mode commanded by the machine-side work mode command means, information on the load pressure, and information on the operation command are transmitted by the machine side communication device to the base station side communication.
- the base station is configured to transmit to a device, and the base station stores a work load storage unit that stores a preset lower limit of the work load in association with each of a plurality of types of work modes, and the load from the control unit
- a work load calculating means for calculating a work load based on pressure information and the operation command, and a work load suitability determining means for determining the suitability of the work load calculated by the work load calculating means
- the workload suitability determination unit determines whether the workload calculated by the workload calculation unit is smaller than a lower limit of the workload corresponding to the work mode of the control unit stored by the workload storage unit.
- the work mode management means determines that the work load is not appropriate by the work load suitability determination means, and the work mode management means When the mode suitability determining means determines that the work mode of the control means is inappropriate, it is set to instruct the control means of the work mode instructed by the base station side work mode instruction means. It is characterized by.
- the work calculated by the work load calculation means is lower than the lower limit of the work load corresponding to the work mode of the control means stored by the work load storage means.
- the work mode that is determined by the work load suitability determination means that the load is small, that is, the work load is inappropriate, and that is commanded to the control means rather than the work mode commanded by the base station side work mode command means Is the work mode with a high upper limit of the target rotational speed, that is, when the work mode suitability judging means determines that the work mode of the control means is inappropriate, the base station side work mode command means commanded The work mode is commanded to the control means.
- the work machine remote management system is the work machine remote management system according to [[2]], in which the work machine includes load pressure detecting means for detecting a load pressure of the hydraulic pump. And a plurality of operation command detection means for detecting an operation command for each of the plurality of hydraulic actuators, wherein the target rotational speed calculation means includes the load pressure detected by the load pressure detection means, Based on the motion command detected by each of the motion command detection means, is set to calculate a target rotational speed below the upper limit of the target rotational speed associated with the work mode, the control means, A fuel usage amount calculating means for calculating a fuel usage amount of the engine per unit time, wherein the control means is a work mode commanded by the machine side work mode command means; Information on the load, information on the load pressure, information on the operation command, and information on the fuel usage calculated by the fuel usage calculation means are transmitted to the base station side communication device by the machine side communication device.
- the base station is configured to store fuel use amount storage means for storing a predetermined lower limit of fuel use amount per unit time associated with each of a plurality of types of work modes, and fuel for the engine.
- a fuel use amount suitability judging means for judging suitability of the use amount
- a workload storage means for storing a preset lower limit of the work load associated with each of a plurality of types of work modes
- the control means Workload calculating means for calculating the workload based on the information on the load pressure and the operation command, and the workload for determining the suitability of the workload calculated by the workload calculating means.
- the fuel use amount suitability determining means further than the lower limit of the fuel use amount corresponding to the operation mode of the control means stored in the fuel use amount storage means.
- the workload suitability determining means is configured to store the control stored in the workload storage means. It is determined whether the workload calculated by the workload calculation means is smaller than the lower limit of the workload corresponding to the work mode of the means, if not, the workload is inappropriate, the work mode management means, The fuel use amount suitability determining means determines that the engine fuel use amount is inappropriate, and the work load suitability determining means determines that the work load is inappropriate. If the work mode of the control means is determined to be inappropriate by the work mode suitability determination means, the work mode commanded by the base station side work mode command means is set to command the control means. It is characterized by being.
- the fuel usage calculation means is more than the lower limit of the fuel usage associated with the work mode of the control means stored in the fuel usage storage means.
- the fuel use amount calculated by the above is determined by the fuel use amount suitability judging means that the fuel use amount is inappropriate, and is associated with the work mode of the control means stored in the work load storage means.
- the work load calculated by the work load calculating means is smaller than the lower limit of the work load, that is, the work load suitability determining means determines that the work load is inappropriate, and the base station side work mode command means.
- the work mode of the control means is a work mode in which the upper limit of the target rotational speed is higher than the work mode commanded by the control means, that is, the work mode of the control means is inappropriate. , And when it is determined by the work mode appropriateness determination means, commanding the work mode instructed by the base station-side work mode instruction means to the control means. As a result, it is possible to reliably reduce the amount of fuel used per unit time and to prevent the occurrence of a situation where work efficiency is reduced.
- the work machine remote management system is the work machine remote management system according to any one of “[1]” to “[5]”, wherein the base station includes a plurality of work machines.
- Registration information storage means for storing the registration information in advance, and search means for searching for a specific work machine using the registration information stored by the registration information storage means, the work mode management means, The operation mode is set to be instructed only to the work machine searched for by the search means.
- the work mode management means commands the work mode only to the work machine found by the search means. Thereby, it is possible to determine whether to lower the upper limit of the target rotational speed individually for a plurality of work machines.
- the work machine remote management system according to the present invention is the work machine remote management system according to [1], wherein the control means shifts to the work mode commanded by the work mode management means of the base station.
- the timing to perform is set so that the work machine is stopped.
- the remote management system for a work machine described in “[7]” can prevent a sudden decrease in the engine speed during the work of the work machine, and thus can safely lower the upper limit of the engine speed. .
- the work machine remote management system is the work machine remote management system according to [[7]], in which the control means is the work mode management means of the base station when the control means is shut down. Further comprising command mode storage means for storing the work mode that has been commanded from the control mode, and is set to shift to the work mode stored by the command mode storage means at a timing when the control means is activated. And
- the target rotation speed calculation means calculates the target rotation speed based on the work mode stored in the command mode storage means at the timing when the control means is activated. It shifts to the state to do. Since the control means is started before the engine is started or immediately after the engine is started, the work machine is stopped. That is, the control means can be shifted to the work mode stored by the command mode storage means while the work machine is stopped.
- the work machine remote management system is the work machine remote management system according to [7], wherein the work machine is provided for each of the plurality of hydraulic actuators.
- a hydraulic pilot control valve that controls the flow direction and flow rate of pressure oil supplied to the hydraulic actuator, a gate lock valve that can shut off the supply of pilot pressure to the hydraulic pilot control valve, and the gate lock
- a gate lock detecting means for detecting whether the valve position of the valve is a closed position for shutting off the pilot pressure or an open position for releasing the pilot pressure, and the control means includes the gate lock detecting means.
- Command mode storage means and is set to shift to the work mode stored by the command mode storage means at a timing when the gate lock detection means detects a change in the valve position from the closed position to the open position. It is characterized by being.
- the target rotational speed calculation means is a command mode storage means at a timing when the gate lock detection means detects a change in the valve position from the closed position to the open position.
- the process shifts to a state in which the target rotational speed is calculated based on the work mode stored by the above.
- the timing at which the gate lock detection means detects the change in the valve position from the closed position to the open position is immediately after the pilot pressure can be supplied to the hydraulic pilot type control valve. Since the valve position of the control valve is not the valve position for guiding the discharge oil of the hydraulic pump to the hydraulic actuator, the work machine is stopped. That is, the control means can be shifted to the work mode stored by the command mode storage means while the work machine is stopped.
- the work mode for setting the upper limit of the engine speed can be set not only from the work machine side but also from the base station side, and the setting from the base station side is given priority according to the conditions. Therefore, even when the work machine is away from the base station or when there are many work machines to be managed, the engine speed can be managed in an appropriate work mode.
- FIG. 2 is a left side view of a hydraulic excavator that is a work machine remotely managed by the remote management system shown in FIG. 1. It is a block diagram which shows the detail of the structure of the control means with which the hydraulic excavator shown in FIG. 2 was equipped, and the structure of a base station.
- a work machine remote management system 1 includes a base station 2.
- the base station 2 is provided with a server 3.
- This server 3 is connected to a hydraulic excavator 20-1 to 20-N, which is a work machine, via a communication network 7, and a company 5 (work machine rental company and lease company) that owns these excavators 20-1 to 20-N. It can be connected to a personal computer 6 of a company, a construction company, etc.
- hydraulic excavators 20-1 to 20-N include a traveling body 21 that travels by driving a crawler belt, a revolving body 22 that is pivotably coupled to the traveling body 21, and a revolving body 22 And a front working device 23 provided substantially at the center of the front portion.
- the swivel body 22 includes a cab 22a provided on the left side of the front working device 23, a counterweight 22b forming a rear end of the swivel body 22, and a counterweight 22b from the rear of the cab 22a. And a machine room 22c formed over the entire space.
- the front working device 23 is a backhoe type, and a boom 23a that is pivotably coupled to the front portion of the revolving body 22 in the vertical direction, an arm 23b that is pivotally coupled to the boom 23a, and the arm And a bucket 23c rotatably coupled to 23b.
- the hydraulic excavators 20-1 to 20-N are provided with a plurality of hydraulic actuators for driving the traveling body 21, the turning body 22, and the front working device 23, respectively.
- the plurality of hydraulic actuators include a left traveling motor (not shown) and a right traveling motor (not shown) that respectively drive the left and right crawler belts of the traveling body 21, and a swing that drives the swing body 22.
- These hydraulic actuators are supplied with oil discharged from a main pump 40 (variable displacement hydraulic pump) shown in FIG. The main pump 40 is driven by the engine 50.
- each control valve controls the flow direction and flow rate of pressure oil supplied to hydraulic actuators such as a left travel motor, a right travel motor, a swing motor, a boom cylinder 23a, an arm cylinder 23b, and a bucket cylinder 23, respectively.
- hydraulic actuators such as a left travel motor, a right travel motor, a swing motor, a boom cylinder 23a, an arm cylinder 23b, and a bucket cylinder 23, respectively.
- FIG. 3 one of these control valves is depicted as a control valve 41 for the sake of simplicity.
- the engine 50 drives a pilot pump 42 (fixed displacement hydraulic pump) together with the main pump 40.
- a pilot pump 42 fixed displacement hydraulic pump
- a plurality of operating lever devices that generate respective operating pressures (pilot pressures) of the plurality of control valves described above from pressure oil discharged from the pilot pump 42, that is, left travel
- An operation lever device, a right traveling operation lever device, a turning / arm operation lever device, and a boom / bucket operation lever device are provided.
- an operation lever device for operating the control valve 41 among these operation lever devices is drawn as an operation lever device 43.
- a pilot pressure as an operation command to the hydraulic actuator is detected in the pilot pipes 44 and 45 for guiding the pilot pressure from the operation lever device 43 to the hydraulic pilot portions 41a and 41b of the control valve 41, and the pilot pressure corresponding to the pilot pressure is detected.
- Pilot pressure sensors 61 and 62 are provided as operation command detection means for outputting a pilot pressure signal (electrical signal).
- One pilot pressure sensor is provided for each hydraulic pilot section.
- a pipe 46 that leads the pressure oil from the pilot pump 42 to the operation lever device 43 has a gate lock valve 47 that can collectively block the supply of pilot pressure to the control valve 41, and a valve position of the gate lock valve 47.
- a gate lock switch 63 (for example, a limit switch) is provided as gate lock detection means for detecting whether the pilot pressure is closed or the open position where pilot pressure is released. The gate lock switch 63 is turned off at the closed position and turned on at the opened position to output an on signal (electric signal).
- the valve position of the gate lock valve 47 is selectively switched between a closed position and an open position in conjunction with the posture of the gate lock lever 48 provided in the cab 22a.
- the main pump 40 is provided with a load pressure sensor 60 (pressure sensor) that detects a load pressure of the main pump 40 and outputs a load pressure signal (electric signal) corresponding to the load pressure.
- a load pressure sensor 60 pressure sensor
- An EC dial device 14 is provided in the cab 22a.
- the EC dial device 14 converts the rotation angle of the dial into a rotational speed command signal (electric signal) corresponding to a value within a preset target rotational speed range of the engine, and outputs it.
- the upper limit of the target rotational speed that can be commanded by the EC dial device 14 is 1800 rpm, for example.
- a command switch 13 is provided as a machine-side work mode command means for selectively commanding a plurality of types of work modes, for example, three types of work modes (economy mode, normal mode, and power mode).
- the command switch 13 is a self-return type push switch, and outputs a work mode command signal (electric signal) when turned on after being pushed.
- the main controller 11 is provided in each of the excavators 20-1 to 20-N.
- the main controller 11 stores a program and data separately from a CPU (Central Processing Unit), a ROM (Read Only Memory) storing a program and data, a RAM (Random Access Memory) used as a work area of the CPU, and a ROM.
- the auxiliary storage device 11b and the like are provided, and the CPU reads out the program and data stored in the ROM or the auxiliary storage device 11b, and executes processing related to calculation and command of the target rotational speed of the engine 50.
- the engine 50 is provided with an engine controller 12 that performs electronic control of the engine speed.
- the main controller 11 calculates the target rotational speed and gives it to the engine controller 12.
- the engine controller 12 includes a CPU, a ROM that stores programs and data, a RAM that is used as a work area of the CPU, an auxiliary storage device that stores programs and data in addition to the ROM, and the like.
- the CPU reads the program and data stored in the apparatus, and executes processing for controlling the rotational speed of the engine 50 in accordance with the target rotational speed commanded from the main controller 11.
- the main controller 11 and the engine controller 12 constitute a control means 10 that controls the rotational speed of the engine 50.
- the main controller 11 has a target rotational speed storage unit 11b1 that stores in advance the upper limit of the target rotational speed of the engine 50 associated with each of the above-described three types of work modes, that is, the eco mode, the normal mode, and the power mode. .
- This target rotational speed storage means 11b1 is provided by using the auxiliary storage device 11b.
- the upper limit of the target rotation speed associated with the eco mode is, for example, 1650 rpm set so that light load work such as leveling can be performed.
- the upper limit of the target rotational speed associated with the normal mode is a rotational speed higher than that in the eco mode, for example, 1800 rpm, which is set so that a normal excavation work performed by dumping or the like can be performed.
- the upper limit of the target rotational speed associated with the power mode is a rotational speed higher than that in the normal mode, for example, 2000 rpm, which is set so that heavy load work such as rooting and deep digging can be performed.
- the main controller 11 further includes target rotation speed calculation means 11c for calculating the target rotation speed.
- the target rotational speed calculation means 11c selects one of the upper limits of the target rotational speed stored by the target rotational speed storage means 11b1 according to the work mode commanded by the command switch 13 (machine side work mode command means).
- the target rotational speed calculation means 11c calculates the target rotational speed using the upper limit of the target rotational speed associated with the work mode as the upper limit of the target rotational speed regardless of the target rotational speed commanded by the EC dial device 14. I do. That is, when the main controller 11 is set in the eco mode associated with 1650 rpm as the upper limit of the target rotational speed, even if the EC dial device 14 commands 1800 rpm as the target rotational speed, the target rotational speed calculating means 11c The upper limit of the calculated target rotational speed is 1650 rpm.
- the target rotational speed calculating means 11c The upper limit of the calculated target rotational speed is 2000 rpm.
- the main controller 11 is basically set to the normal mode when it is activated.
- the main controller 11 shifts to the power mode, and when the work mode command signal of the command switch 13 is input to the main controller 11 again,
- the mode returns to the normal mode. That is, when the work mode command signal of the command switch 13 is input to the main controller 11, the work mode that defines the upper limit of the target rotational speed is switched from the normal mode ⁇ the power mode ⁇ the eco mode ⁇ . It is set as follows. Note that the normal mode may not be set when the main controller 11 is activated. This case will be described later.
- the main controller 11 further includes a machine side communication device 11a capable of communicating with an external communication device via the communication line network 7.
- This machine side communication device 11a performs communication by radio.
- the server 3 of the base station 2 includes a CPU, a ROM that stores programs and data, a RAM that is used as a work area for the CPU, an auxiliary storage device that stores programs and data separately from the ROM, and the like.
- the CPU reads out the program and data stored in the auxiliary storage device 3f, and executes processing related to management of the work mode of each main controller 11 of the excavators 20-1 to 20-N.
- the server 3 includes registration information storage means 3f1 that stores in advance the registration information of the hydraulic excavators 20-1 to 20-N, that is, the units (Nos. 1 to N) and the models of the units, and three types of work modes ( (Eco mode, normal mode, power mode) and the upper limit of the target rotational speed associated with each mode, the work mode storage means 3f2 that stores in advance, and the three types of work modes are set in advance.
- a fuel use amount storage unit 3f3 that stores a lower limit of the fuel use amount per unit time
- a work load storage unit 3f4 that stores a preset lower limit of the work load associated with each of the three types of work modes. It has further.
- These storage units 3f1 to 3f4 are all provided by using the auxiliary storage device 3f.
- the lower limit of the fuel consumption and the lower limit of the work load are set for each model in consideration of the specifications of the model.
- the server 3 further includes a base station side communication device 3g capable of communicating with external communication devices including the machine side communication device 11a. Using this base station side communication device 3g, the excavators 20-1 to 20-N and the company 5 that owns these excavators 20-1 to 20-N via the communication line network 7 as described above. Can be connected to a personal computer 6 or the like.
- the server 3 selects a work mode selected from the types of work modes stored in the work mode storage means 3f2 by communication with the control means 10 (main controller 11) using the base station side communication device 3g. This is work mode management means that can be instructed to the main controller 11.
- the base station 2 uses the input device 4 (mouse, keyboard) as the base station side work mode command means for commanding the server 3 to select a work mode to be selected from the work mode types stored in the work mode storage means 3f2. ).
- the company 5 requests the base station 2 to designate a work mode as a work mode
- the staff of the base station 2 operates the input device 4 so that the server 3 selects the designated work mode.
- the server 3 is set so that the selected work mode is transmitted to the machine side communication device 11a by the base station side communication device 3g at a predetermined cycle.
- the work mode is designated, for example, for some of the excavators 20-1 to 20-N, only light load work is scheduled to be performed on that day.
- eco-mode is specified.
- the work modes that can be selected are limited to the normal mode and the eco mode, that is, the life of the hydraulic excavator is prevented from being shortened by preventing heavy load work.
- the target rotational speed calculation means 11c of the main controller 11 calculates the target rotational speed based on the work mode instructed by the server 3 when the work mode is instructed to the main controller 11 by the server 3 (work mode management means). It is set to calculate.
- the main controller 11 is set to transmit the information on the work mode commanded by the command switch 13 to the base station side communication device 3g by the machine side communication device 11a at a predetermined cycle.
- the server 3 further includes work mode suitability determination means 3a for judging suitability of the work mode of the main controller 11 based on the work mode information of the main controller 11 received by the base station side communication device 3g. Whether the work mode suitability determining means 3a is a work mode in which the upper limit of the target rotational speed is higher in the work mode of the main controller 11 than in the work mode commanded by the input device 4 (base station side work mode command means). In the case of a high work mode, the work mode of the main controller 11 is made inappropriate.
- the engine controller 12 of the control means 10 has a fuel usage calculation means 12b for calculating the fuel usage of the engine per unit time.
- the fuel usage calculation means 12 b gives the information on the calculated fuel usage to the main controller 11.
- the main controller 11 is set to transmit the fuel usage information calculated by the fuel usage calculation means 12b to the base station side communication device 3g at a predetermined cycle by the machine side communication device 11a.
- the server 3 further includes a fuel use amount suitability determination means 3b for judging the suitability of the fuel use amount of the engine.
- the fuel use amount suitability determining unit 3b is configured so that the engine controller 12 sets the fuel use amount lower than the fuel use amount associated with the work mode of the main controller 11 out of the lower limit of the fuel use amount stored by the fuel use amount storage unit 3f3. It is determined whether or not the fuel usage calculated by the fuel usage calculation means 12b is small, and if it is small, the fuel usage is inappropriate.
- the fuel use amount suitability determining unit 3b uses the fuel use amount in the normal mode corresponding to the model of the excavator 20-1. Is read from the fuel usage amount storage unit 3f3, and the lower limit of the read fuel usage amount is compared with the fuel usage amount calculated by the fuel usage amount calculation unit 12b. As a result of the comparison, if the calculated fuel usage is lower than the lower limit of the read fuel usage, the calculated fuel usage is less than the fuel usage in the normal mode, that is, the eco usage lower than the normal mode. It can be considered that the range of fuel usage in the mode is good, and is not appropriate because it is not the fuel usage in the normal mode.
- the main controller 11 receives the information on the load pressure detected by the load pressure sensor 60, the pilot pressure detected by the pilot pressure sensors 61 and 62, that is, the information on the operation command for the hydraulic excavator 20 by the operation lever device 43.
- the communication device 11a is set to transmit to the base station side communication device 3g at a predetermined cycle.
- the server 3 calculates the workload based on the load pressure information from the main controller 11 and the operation command information, and determines whether the workload calculated by the workload calculation unit 3c is appropriate. It further has a work load suitability determination means 3c for determining.
- the work load suitability determining means 3c is calculated by the work load calculating means 3c from the work load lower limit associated with the work mode of the main controller 11 among the work load lower limits stored by the work load storage means 3f4. It is determined whether the workload is small, and if it is small, the workload is inappropriate.
- the work load suitability determining means 3c determines the lower limit of the work load in the normal mode corresponding to the model of the excavator 20-1. Is read from the fuel usage amount storage means 3f3, and the lower limit of the read work load is compared with the work load calculated by the work load calculation means 3c. As a result of the comparison, if the calculated workload is lower than the lower limit of the read workload, the calculated workload is within the range of the workload in the eco mode, and the workload in the normal mode. Because it is not, it is determined to be inappropriate.
- the server 3 is inadequate in the work mode of the main controller 11 by the work mode suitability determination means 3a, that is, the work mode of the main controller 11 has a higher upper limit of the target rotational speed than the work mode instructed by the input device 4.
- the fuel usage amount determination means 3b determines that the fuel usage amount of the engine 50 is inappropriate, that is, the fuel usage amount of the engine 50 is small, and the workload appropriateness determination means 3c determines that the workload is inappropriate.
- the main controller 11 is set to command the work mode commanded by the input device 4.
- the server 3 further includes search means 3e for searching for a specific work machine using the registration information stored by the registration information storage means 3f1.
- the server 3 is set to instruct the work mode only to the work machine found by the search means 3e.
- the search condition is input to the server 3 when the staff operates the input device 4.
- the main controller 11 further includes command mode storage means 11b2 for storing a work mode commanded from the server 3.
- This command mode storage means 11b2 is provided using the auxiliary storage device 11b.
- the work mode stored in the command mode storage unit 11b2 of the main controller 11 is set to be rewritten sequentially to a new work mode every time a new work mode is commanded from the server 3.
- the main controller 11 is set to shift to the work mode stored in the command mode storage means 11b2 at the timing when the gate lock switch 63 detects the change of the valve position from the closed position to the open position.
- the main controller 11 is connected to a monitor 70 provided in the cab 22a.
- the monitor 70 displays which work mode is set to one of the three kinds of work modes in response to a command from the main controller 11.
- the monitor 70 indicates that the work mode is set according to the command of the command switch 13. Is displayed.
- the monitor 70 has the set work mode and the work mode is set in accordance with an instruction from the server 3. A message is displayed.
- the remote management system 1 configured in this way operates as follows, for example.
- the operator of the hydraulic excavator 20-1 operates a key switch (not shown) to start the engine 50 and then turns it on. As a result, the main controller 11 and the engine controller 12 are activated. At startup, the main controller 11 is set to the normal mode. The operator of the excavator 20-1 leaves the setting of the main controller 11 in the normal mode and causes the excavator 20-1 to perform normal excavation work.
- the operator of the hydraulic excavator 20-2 starts the engine 50 and starts the main controller 11 and the engine controller 12 in the same manner as the operator of the hydraulic excavator 20-1.
- the operator of the excavator 20-2 leaves the setting of the main controller 11 in the normal mode and causes the excavator 20-2 to perform a light load operation.
- An instruction to set the work mode of the hydraulic excavators 20-1 and 20-2 to the eco mode is transmitted from the personal computer 6 of the company 5 to the server 3 of the base station 2 via the communication line network 7.
- the staff of the base station 2 operates the input device 4 to input the search condition, operates the search means 3e of the server 3, and operates the hydraulic excavator 20-1, stored in the registration information storage means 3f1. Search for 20-2 information.
- the server 3 is selected to select the eco mode among the three types of work modes stored by the work mode storage means 3f2, and the eco mode is instructed to the hydraulic excavators 20-1 and 20-2.
- the server 3 determines the suitability of the work mode based on the work mode information of the excavator 20-1 by the work mode suitability determining means 3a. In addition, the server 3 determines the propriety of the fuel usage amount based on the fuel usage amount information of the excavator 20-1 by the fuel usage amount appropriateness determination means 3b. Similarly to these, the server 3 also determines the suitability of the work mode and the fuel usage of the excavator 20-2.
- the server 3 calculates the work load of the hydraulic excavator 20-1 based on the load pressure information and the operation command information in the hydraulic excavator 20-1 by the work load calculating means 3c. Based on the load pressure information and the operation command information, the work load of the excavator 20-2 is calculated. Then, the server 3 determines the suitability of the work loads of the excavators 20-1 and 20-2 by the work load suitability determining means 3c.
- the server 3 is instructed to set both the excavators 20-1 and 20-2 to the eco mode, but both the excavators 20-1 and 20-2 are set to the normal mode. Therefore, the determination result by the work mode suitability determination means 3a is inappropriate for both the hydraulic excavators 20-1 and 20-2.
- the excavator 20-1 performs normal excavation work in the normal mode. Accordingly, the determination results by the fuel use amount suitability determining means 3b and the work load suitability determining means 3c are appropriate.
- the hydraulic excavator 20-2 performs light load work in the normal mode. Accordingly, the determination results of the fuel use amount suitability determining means 3b and the work load suitability determining means 3c are all inappropriate.
- the determination result by the work mode suitability determination means 3a is inappropriate for the hydraulic excavator 20-1, but the determination results of the fuel use amount suitability determination means 3b and the work load suitability determination means 3c are both appropriate. Therefore, the main controller 11 of the excavator 20-1 is not instructed to switch to the eco mode.
- the server 3 is not suitable for the hydraulic excavator 20-2 because the determination results of the work mode suitability judging means 3a, the fuel usage suitability judging means 3b and the work load suitability judging means 3c are all inappropriate.
- the main controller 11 of 20-2 is instructed to switch to the eco mode by the base station side communication device 3g.
- the main controller 11 of the excavator 20-2 receives the command for switching to the eco mode from the machine side communication device 11a during the operation of the excavator 20-2, and stores the command in the command mode storage unit 11b2.
- the operator stops the excavator 20-2 for a break and operates the gate lock lever 48 to switch the valve position of the gate lock valve 47 from the open position to the closed position. As the valve position changes, the gate lock switch 63 is turned off.
- the operator operates the gate lock lever 48 of the excavator 20-2 to switch the valve position of the gate lock valve 47 from the closed position to the open position.
- the gate lock switch 63 is turned on.
- the target revolution number calculating means 11c of the main controller 11 is the operation mode stored in the command mode storage means 11b2 during the operation of the hydraulic excavator 20-2 before the break at the timing when the ON signal from the gate lock switch 63 is input. That is, the target rotational speed is calculated based on the eco mode. As a result, the engine speed of the excavator 20-2 is lower than that in the normal mode selected by the operator.
- the remote management system 1 since the work mode can be commanded by communication from the server 3 of the base station 2 to the main controller 11, the upper limit of the engine speed of the hydraulic excavators 20-1 to 20-N is set by the operator. Can be prioritized. Moreover, since it can be set by remote control from the base station 2, the engine speed can be appropriately managed even when there are many hydraulic excavators or when the manager is located away from the work machine.
- the work mode of the main controller 11 is a work mode in which the upper limit of the target rotational speed is higher than the work mode commanded by the input device 4 of the base station 2, that is, the work of the main controller 11.
- the server 3 instructs the main controller 11 in the work mode instructed by the input device 4.
- the upper limit of the engine speed can be reduced, and therefore the amount of fuel used per unit time can be reduced.
- the fuel usage calculation unit 12 b uses the lower limit of the fuel usage stored in the fuel usage storage 3 f 3 than the lower limit of the fuel usage associated with the work mode of the main controller 11.
- the server 3 sets the work mode commanded by the input device 4 to the main controller. 11 to command. As a result, the amount of fuel used per unit time can be reliably reduced.
- the work load calculated by the work load calculating means 3c is lower than the work load lower limit associated with the work mode of the main controller 11 among the work load lower limits stored by the work load storage means 3f4.
- the work mode of the main controller 11 is more desirable than the work mode determined by the work load suitability determining means 3c, that is, that the work load is inappropriate, and instructed by the input device 4 of the base station 2.
- the main controller 11 is commanded to the work mode commanded by the input device 4.
- the server 3 commands the work mode only to the specific excavator searched by the search means 3e. As a result, it is possible to determine whether or not to lower the upper limit of the target rotational speed individually for the plurality of hydraulic excavators 20-1 to 20-N.
- the search by the search means 3e can be performed under conditions such as the work mode, fuel consumption, load pressure, etc. set by the command switch 13.
- the control means 10 main controller 11
- the command mode storage means 11b2 at the timing when the gate lock switch 63 (gate lock detection means) detects the change of the valve position from the closed position to the open position.
- the timing at which the gate lock switch 63 detects the valve position from the closed position to the open position is immediately after the pilot pressure can be supplied to the control valve 41, and the valve position of the control valve 41 is the oil discharged from the main pump.
- the hydraulic excavator is stopped because it is not the valve position that leads to the hydraulic actuator. That is, the control means 10 shifts to the work mode stored by the command mode storage means 11b2 while the excavator is stopped. Thereby, it is possible to prevent the engine speed from suddenly decreasing during the operation of the hydraulic excavator, and thus it is possible to safely lower the upper limit of the engine speed.
- the work mode management means controls the control means (main controller 11).
- the present invention is not limited to this.
- the command mode storage means stores the work mode commanded from the server 3. 11b2, and the control means 10 is set to shift to the work mode stored in the command mode storage means 11b2 at the timing when the gate lock switch 63 detects the change of the valve position from the closed position to the open position.
- the command mode storage means and the target rotational speed calculation means in the present invention are not limited to them.
- the command mode storage unit 11b2 stores the work mode commanded from the server 3 when the control unit 10 (main controller 11) is shut down.
- the control unit 10 is stored by the command mode storage unit 11b2 at the start timing. It may be set to shift to the work mode.
- the main controller 11 Since the main controller 11 is started before the engine 50 is started or immediately after the engine 50 is started, the hydraulic excavator is stopped. That is, the control means 10 shifts to the work mode stored by the command mode storage means 11b2 while the excavator is stopped. As a result, similar to the above-described embodiment, it is possible to prevent the engine speed from suddenly decreasing during the operation of the hydraulic excavator, and thus it is possible to safely lower the upper limit of the engine speed.
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Abstract
Description
また、従来、作業機械の遠隔管理システムには、油圧ショベルに備えられた制御装置の制御プログラムおよびデータを、通信回線を介して基地局のサーバで管理するものがある。この種の遠隔管理システムには、油圧ショベルのフロント作業装置のアタッチメントを交換した場合に、すなわち、標準サイズのバケットを幅広バケットまたはブレーカに交換したり、標準サイズのアームをロングアームに交換したりした場合に、制御装置に記憶された標準サイズのバケットを有するフロント作業装置の制御に対応した制御プログラムおよびデータを、幅広バケットまたはブレーカを有するフロント作業装置の制御に対応した内容に書き換えたり、標準サイズのアームを有するフロント作業装置の制御に対応した制御プログラムおよびデータを、ロングアームを有するフロント作業装置の制御に対応した内容に書き換えたりするものがある。
2 基地局
3 サーバ(作業モード管理手段)
3a 作業モード適否判定手段
3b 燃料使用量適否判定手段
3c 作業負荷演算手段
3d 作業負荷適否判定手段
3e 検索手段
3f 補助記憶装置
3f1 登録情報記憶手段
3f2 作業モード記憶手段
3f3 燃料使用量記憶手段
3f4 作業負荷記憶手段
3g 基地局側通信装置
4 入力装置(基地局側作業モード指令手段)
10 制御手段
11 メインコントローラ
11a 機械側通信装置
11b 補助記憶装置
11d1 目標回転数記憶手段
11b2 指令モード記憶手段
11c 目標回転数演算手段
12 エンジンコントローラ
12b 燃料使用量演算手段
13 指令スイッチ(機械側作業モード指令手段)
14 ECダイヤル装置
40 メインポンプ(油圧ポンプ)
50 エンジン
47 ゲートロック弁
60 負荷圧センサ(負荷圧検出手段)
61,62 パイロット圧センサ(動作指令検出手段)
63 ゲートロックスイッチ(ゲートロック検知手段)
Claims (9)
- 作業機械と基地局とを備えた作業機械の遠隔管理システムにおいて、
前記作業機械は、複数の油圧アクチュエータに供給される圧油を吐出する油圧ポンプの駆動源であるエンジンと、このエンジンの回転数の制御を行う制御手段と、前記制御手段に対し複数種類の作業モードを選択的に指令する機械側作業モード指令手段とを有し、
前記制御手段は、前記複数種類の作業モードのそれぞれに対応付けられたエンジンの目標回転数の上限を予め記憶した目標回転数記憶手段と、前記目標回転数記憶手段により記憶された目標回転数の上限の1つを、前記機械側作業モード指令手段により指令された作業モードに応じて選択し、選択した上限以下の目標回転数を演算する目標回転数演算手段と、機械側通信装置とを有し、
前記基地局は、前記作業機械の作業モードの種類を予め記憶した作業モード記憶手段と、前記作業モード記憶手段に記憶された作業モードの中から所望の作業モードを選択する基地局側作業モード指令手段と、前記機械側通信装置と通信可能な基地局側通信装置と、前記基地局側作業モード指令手段によって選択された作業モードを、前記基地局側通信装置を介して前記制御手段に対して指令可能な作業モード管理手段とを有し、
前記作業機械の前記目標回転数演算手段は、前記基地局の前記作業モード管理手段により前記制御手段に対し作業モードが指令された場合に、前記作業モード管理手段により指令された作業モードに基づいて目標回転数を演算するよう設定されていることを特徴とする作業機械の遠隔管理システム。 - 請求項1に記載の作業機械の遠隔管理システムにおいて、
前記制御手段は、前記機械側作業モード指令手段により指令された作業モードの情報を、前記機械側通信装置により前記基地局側通信装置に送信するよう設定されており、
前記基地局は、前記基地局側通信装置により受信した前記制御手段の作業モードの情報に基づいて、前記制御手段に指令されている作業モードの適否を判定する作業モード適否判定手段をさらに有し、
この作業モード適否判定手段は、前記基地局側作業モード指令手段により指令された作業モードよりも前記制御手段の作業モードの方が目標回転数の上限が高い作業モードであるかどうかを判定し、高い作業モードである場合に、前記機械側作業モード指令手段によって前記制御手段に指令されている作業モードを不適当と判定し、前記作業モード管理手段は、前記作業モード適否判定手段により前記制御手段の作業モードが不適当と判定された場合に、前記基地局側作業モード指令手段により指令された作業モードを前記制御手段に対して指令するよう設定されていることを特徴とする作業機械の遠隔管理システム。 - 請求項2に記載の作業機械の遠隔管理システムにおいて、
前記制御手段は、単位時間当たりの前記エンジンの燃料使用量を演算する燃料使用量演算手段をさらに有し、前記機械側作業モード指令手段により指令された作業モードの情報と、前記燃料使用量演算手段により算出された燃料使用量の情報とを前記機械側通信装置により前記基地局側通信装置に送信するよう設定されており、前記基地局は、複数種類の作業モードのそれぞれに対応付けられて予め設定された単位時間当たりの燃料使用量の下限を記憶した燃料使用量記憶手段と、前記エンジンの燃料使用量の適否を判定する燃料使用量適否判定手段とをさらに有し、前記燃料使用量適否判定手段は、前記燃料使用量記憶手段に記憶されている前記制御手段の作業モードに対応する燃料使用量の下限よりも、前記制御手段の前記燃料使用量演算手段により算出された燃料使用量が少ないかどうかを判定し、少ない場合に燃料使用量を不適当とし、前記作業モード管理手段は、前記燃料使用量適否判定手段により前記エンジンの燃料使用量が不適当と判定され、かつ、前記作業モード適否判定手段により前記制御手段の作業モードが不適当と判定された場合に、前記基地局側作業モード指令手段により指令された作業モードを前記制御手段に対して指令するよう設定されていることを特徴とする作業機械の遠隔管理システム。 - 請求項2に記載の作業機械の遠隔管理システムにおいて、
前記作業機械は、前記油圧ポンプの負荷圧を検出する負荷圧検出手段と、前記複数の油圧アクチュエータのそれぞれに対する動作の指令を検出する複数の動作指令検出手段とをさらに有し、前記目標回転数演算手段は、前記負荷圧検出手段により検出された負荷圧と、前記複数の動作指令検出手段のそれぞれにより検出された動作の指令とに基づいて、作業モードに対応付けられた目標回転数の上限以下の目標回転数を算出するよう設定されており、前記制御手段は、前記機械側作業モード指令手段により指令された作業モードの情報、前記負荷圧の情報、前記動作の指令の情報を、前記機械側通信装置により前記基地局側通信装置に送信するよう設定されており、前記基地局は、複数種類の作業モードのそれぞれに対応付けて予め設定された作業負荷の下限を記憶した作業負荷記憶手段と、前記制御手段からの前記負荷圧の情報と前記動作の指令とに基づいて作業負荷を演算する作業負荷演算手段と、この作業負荷演算手段により算出された作業負荷の適否を判定する作業負荷適否判定手段とをさらに有し、前記作業負荷適否判定手段は、前記作業負荷記憶手段により記憶された前記制御手段の作業モードに対応する作業負荷の下限よりも、前記作業負荷演算手段により算出された作業負荷が小さいかどうかを判定し、小さい場合に作業負荷を不適当とし、前記作業モード管理手段は、前記作業負荷適否判定手段により作業負荷が不適当と判定され、かつ、前記作業モード適否判定手段により前記制御手段の作業モードが不適当と判定された場合に、前記基地局側作業モード指令手段により指令された作業モードを前記制御手段に対して指令するよう設定されていることを特徴とする作業機械の遠隔管理システム。 - 請求項2に記載の作業機械の遠隔管理システムにおいて、
前記作業機械は、前記油圧ポンプの負荷圧を検出する負荷圧検出手段と、前記複数の油圧アクチュエータのそれぞれに対する動作の指令を検出する複数の動作指令検出手段とをさらに有し、前記目標回転数演算手段は、前記負荷圧検出手段により検出された負荷圧と、前記複数の動作指令検出手段のそれぞれにより検出された動作の指令とに基づいて、作業モードに対応付けられた目標回転数の上限以下の目標回転数を算出するよう設定されており、前記制御手段は、単位時間当たりの前記エンジンの燃料使用量を演算する燃料使用量演算手段を有し、前記制御手段は、前記機械側作業モード指令手段により指令された作業モードの情報、前記負荷圧の情報、前記動作の指令の情報、および前記燃料使用量演算手段により算出された燃料使用量の情報とを前記機械側通信装置により前記基地局側通信装置に送信するよう設定されており、前記基地局は、複数種類の作業モードのそれぞれに対応付けられて予め設定された単位時間当たりの燃料使用量の下限を記憶した燃料使用量記憶手段と、前記エンジンの燃料使用量の適否を判定する燃料使用量適否判定手段と、複数種類の作業モードのそれぞれに対応付けられて予め設定された作業負荷の下限を記憶した作業負荷記憶手段と、前記制御手段からの前記負荷圧の情報と前記動作の指令とに基づいて作業負荷を演算する作業負荷演算手段と、この作業負荷演算手段により算出された作業負荷の適否を判定する作業負荷適否判定手段とをさらに有し、前記燃料使用量適否判定手段は、前記燃料使用量記憶手段に記憶された前記制御手段の作業モードに対応する燃料使用量の下限よりも、前記制御手段の前記燃料使用量演算手段により算出された燃料使用量が少ないかどうかを判定し、少ない場合に燃料使用量を不適当とし、前記作業負荷適否判定手段は、前記作業負荷記憶手段に記憶された前記制御手段の作業モードに対応する作業負荷の下限よりも、前記作業負荷演算手段により算出された作業負荷が小さいかどうかを判定し、小さい場合に作業負荷を不適当とし、前記作業モード管理手段は、前記燃料使用量適否判定手段により前記エンジンの燃料使用量が不適当と判定され、かつ、前記作業負荷適否判定手段により作業負荷が不適当と判定され、かつ、前記作業モード適否判定手段により前記制御手段の作業モードが不適当と判定された場合に、前記基地局側作業モード指令手段により指令された作業モードを前記制御手段に対して指令するよう設定されていることを特徴とする作業機械の遠隔管理システム。 - 請求項1~5のいずれか1項に記載の作業機械の遠隔管理システムにおいて、
前記基地局は、複数の作業機械の登録情報を予め記憶した登録情報記憶手段と、この登録情報記憶手段により記憶された登録情報を用いて、特定の作業機械を検索する検索手段とをさらに有し、
前記作業モード管理手段は、前記検索手段により探し出された作業機械のみに対して作業モードを指令するよう設定されていることを特徴とする作業機械の遠隔管理システム。 - 請求項1に記載の作業機械の遠隔管理システムにおいて、
前記制御手段が前記基地局の前記作業モード管理手段により指令された作業モードに移行するタイミングは、前記作業機械の停止中になるよう設定されていることを特徴とする作業機械の遠隔管理システム。 - 請求項7に記載の作業機械の遠隔管理システムにおいて、
前記制御手段は、この制御手段のシャットダウン時に前記基地局の前記作業モード管理手段から指令されていた作業モードを記憶する指令モード記憶手段をさらに有し、前記制御手段の起動するタイミングで、前記指令モード記憶手段により記憶された作業モードに移行するよう設定されていることを特徴とする作業機械の遠隔管理システム。 - 請求項7に記載の作業機械の遠隔管理システムにおいて、
前記作業機械は、前記複数の油圧アクチュエータのそれぞれに対して設けられ、対応する油圧アクチュエータに供給される圧油の流れの方向および流量を制御する油圧パイロット式制御弁と、これらの油圧パイロット式制御弁へのパイロット圧の供給を遮断可能なゲートロック弁と、このゲートロック弁の弁位置がパイロット圧を遮断する閉位置であるのか、パイロット圧を開放する開位置であるのかを検知するゲートロック検知手段とをさらに有し、
前記制御手段は、前記ゲートロック検知手段が開位置から閉位置への弁位置の変化を検知したときに前記作業モード管理手段から指令されていた作業モードを記憶する指令モード記憶手段をさらに有し、前記ゲートロック検知手段が閉位置から開位置への弁位置の変化を検知したタイミングで、前記指令モード記憶手段により記憶された作業モードに移行するよう設定されていることを特徴とする作業機械の遠隔管理システム。
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