WO2012147751A1 - 稼働機械及び保守点検情報生成装置 - Google Patents
稼働機械及び保守点検情報生成装置 Download PDFInfo
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- WO2012147751A1 WO2012147751A1 PCT/JP2012/060990 JP2012060990W WO2012147751A1 WO 2012147751 A1 WO2012147751 A1 WO 2012147751A1 JP 2012060990 W JP2012060990 W JP 2012060990W WO 2012147751 A1 WO2012147751 A1 WO 2012147751A1
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- life
- usage mode
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- estimated
- target part
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
-
- 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
- E02F9/26—Indicating devices
- E02F9/267—Diagnosing or detecting failure of vehicles
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q10/00—Administration; Management
- G06Q10/20—Administration of product repair or maintenance
Definitions
- the present invention relates to an operating machine and a maintenance inspection information generating device for providing information on maintenance of the operating machine based on the operating state of the operating machine.
- Maintenance is generally performed on a regular basis mainly based on the operating time, and inspection, maintenance, and replacement of each part defined in the design standard are performed according to the operating time of the machine.
- the machine should not fail because a good condition is maintained, but in practice a failure stop can not be avoided. For example, if the machine is used at a load higher than that assumed in the design standard, parts may be depleted earlier than expected, leading to a failure and stop. That is, the cause of component failure is that the assumed design criteria do not match the operating conditions of the actual use environment.
- invention according to the invention International Publication No. 01/073215 pamphlet
- International Publication No. 01/073215 pamphlet which calculates and utilizes the actual parts life by statistical processing by totaling the maintenance exchange time for each part of machine and parts according to operation time and place
- An invention for estimating the life Japanese Patent Laid-Open No. 2005-173979
- an invention is disclosed that estimates the use limit from the reference value of the sensor with respect to the model of the machine and the failure mode of the part and the change rate of the sensor value (Japanese Patent Application Laid-Open No. 2002-352024).
- This invention is made in view of such a subject, and an object of this invention is to provide the working machine and maintenance inspection information generation apparatus with high estimation accuracy of the component life which concerns on a working machine.
- the present invention is an operating machine composed of a plurality of parts in order to achieve the above object, wherein the operation history of a target part which is included in the plurality of parts and whose lifetime is to be estimated, and the operation history
- a storage device in which a discrimination threshold value used to classify the usage mode of the target component into a plurality of types and an estimated life by usage mode indicating the estimated life of the target component for each usage mode, and an operation history of the target component
- processing for calculating the operation time of the target component for each usage mode based on the determination threshold, and based on the operation time of the target component for each usage mode calculated by the processing and the estimated life according to the usage mode
- an arithmetic and control unit that executes a process of estimating the life of the target part.
- the component life is estimated according to the utilization form of each operating machine, it is possible to improve the life estimation accuracy of the part related to the operating machine.
- FIG. 3 is a detailed view of the hardware configuration shown in FIG. 2;
- FIG. 3 is a view showing an example of data items stored in the storage device according to the first embodiment of the present invention. The figure which showed the operation
- FIG. 2 is a detailed diagram of a maintenance and inspection information generation device 100 and a hardware configuration around it.
- generation apparatus 100 which concerns on the 2nd Embodiment of this invention.
- An example of the flowchart of the process performed when the estimated life calculating unit according to the second embodiment of the present invention calculates the average operation time for each usage mode.
- FIG. 1 is a block diagram of a working machine according to a first embodiment of the present invention
- FIG. 2 is a schematic view of a control device according to the first embodiment of the present invention and hardware configuration around it.
- FIG. 3 is a detailed view of the hardware configuration shown in FIG.
- FIG. 1 an embodiment using a hydraulic shovel which is a construction machine as an operating machine will be described.
- the hydraulic shovel (operating machine) 1 shown in FIG. 1 is composed of a plurality of parts, and includes a lower traveling body 7, an upper revolving body 5 pivotally attached to the upper portion of the lower traveling body 7, and an upper revolving body Output from each sensor in the sensor group 4 consisting of a plurality of sensors for detecting the operation history of each component constituting the hydraulic shovel 1 and the articulated work apparatus 6 pivotally attached to 5
- the control device 2 generates maintenance and inspection information (for example, the lifetime of each component) related to each part of the hydraulic shovel 1 based on the operation history to be selected, and the display device 3 displays the maintenance and inspection information generated by the control device 2 ing.
- the sensors in the sensor group 4 are, for example, an engine rotational speed sensor 41 (see FIG. 2) that detects the rotational speed of the engine (not shown) of the hydraulic shovel 1, and a hydraulic pump driven by the engine There is a pressure sensor 42 (see FIG. 2) that detects the discharge pressure of a unit (not shown) that supplies hydraulic fluid to a hydraulic actuator (for example, a hydraulic cylinder for driving the work device 6) of the hydraulic shovel 1.
- a hydraulic actuator for example, a hydraulic cylinder for driving the work device 6
- the control device 2 performs various processes for generating maintenance inspection information of the operating machine according to a storage device 20 configured by a hard disk, a RAM, a ROM, and the like, and a program stored in the storage device 20.
- An arithmetic control unit (for example, CPU) 10 to be executed is provided.
- the operation history of each component output from each sensor in the sensor group 4 is output to the control device 2 and stored in the storage device 20.
- the storage device 20 includes a configuration information storage unit 21, an operation history storage unit 22, a sensor related information storage unit 23, an exchange history storage unit 24, and an estimated life storage unit 25 classified by use mode.
- FIG. 4 is a diagram showing an example of data items stored in the storage device 20. As shown in FIG.
- the configuration information storage unit 21 stores the configuration information 210 in FIG.
- the configuration information 210 represents identification information of each hydraulic shovel 1 (operating machine) and what parts each hydraulic shovel 1 is configured from, and includes identification numbers (machine numbers) of the hydraulic shovels 1 and The identification number (part number) of the part included in the hydraulic shovel 1 and the type (part type) of the part included in each hydraulic shovel 1 are included.
- the hydraulic shovel 1 is composed of structures such as arms, booms, turning wheels, crawlers and heat exchangers, main parts such as engines, hydraulic pumps, buckets and hydraulic cylinders, and consumable parts such as oil and filters. Each part is assigned and managed with an identification number (part number). In order to maintain the performance of each operating machine, it is necessary to carry out maintenance work, and in maintenance work, replace worn or broken parts with new ones.
- the operation history storage unit 22 stores operation history information 220 of each component constituting each hydraulic excavator 1.
- the operation history information 220 includes a machine number, a sensor item, sensor data (sensor detection value), and a recording date of sensor data.
- the sensor items of the hydraulic shovel 1 include the outside air temperature, the outside air pressure, the engine speed, the operating oil temperature, the coolant temperature, the pump pressure, the operating pressure and the like.
- the sensor data is sensing data of each component detected by each sensor of the sensor group 4.
- the sensor data is data that can be acquired for each measurement unit time, and the collection of a large number of sensor data for each sensor item in chronological order corresponds to the operation history.
- FIG. 5 is a graph showing the operation history of the engine rotational speed and the pump pressure (discharge pressure of the hydraulic pump) in the hydraulic shovel 1.
- the operation history shown in this figure is stored based on sensor data detected by the engine speed sensor 41 and the pressure sensor 42.
- the engine speed history 401 shows the change of the engine speed detected by the engine speed sensor 41.
- the values change at times T1 and T2.
- the pump pressure history 402 indicates the change in pump pressure detected by the pressure sensor 42.
- the values change at times T1 and T2 as in the case of the engine speed.
- the sensor related information storage unit 23 stores component sensor related information 230 in FIG. 4.
- the part sensor related information 230 is information related to sensor items and the like associated with wear and failure of parts, and includes a part type, a sensor item, and a determination threshold.
- the determination threshold is a boundary value of sensor data used to classify the usage mode of the component into a plurality of types based on the operation history of the component, and is a value set for each component type and each sensor item. That is, the determination threshold indicates a boundary condition of sensor data for discriminating how to put a load on a part (that is, the degree of wear).
- the usage mode of each component is classified into a plurality of types according to the magnitude of sensor data using the discrimination threshold, and consumption / deterioration of each component based on the degree of time for which each component is operated in each usage mode. I measure the degree.
- the determination threshold of the engine rotational speed shown in FIG. 5 is R1 and R2 (R1> R2), and the determination threshold of the pump pressure is P1.
- the usage mode of the engine is classified into a plurality of types based on the operation history of the engine speed and the determination threshold values R1 and R2. Specifically, it can be classified into three sections Sa, Sb, and Sc with the time T1 and T2 as boundaries. That is, a section Sa from time T1 to T2 is a section at which the engine speed is R1 or more, a section Sb after time T2 is a section at least R2 and less than R1, and a section Sc until time T1 has an engine speed R2 It is less than the section.
- the usage form of the hydraulic pump can be classified into three sections Sa, Sb, and Sc with time T1 and T2 as boundaries based on the operation history of the pump pressure and the determination threshold P1. That is, the section Sa is a section in which the pump rotational speed is P1 or more, and the sections Sb and Sc are sections in which the pump rotational speed is less than P1.
- FIG. 6 is a diagram showing a classification table when the operation histories of the engine and hydraulic pump are classified into a plurality of usage forms based on the determination thresholds R1, R2, and P1.
- the usage forms of the engine and hydraulic pump of the hydraulic shovel according to the present embodiment are classified into three usage forms as shown in FIG. 6 according to the operation history of FIG. 5 and the determination threshold value.
- a classification number is used to distinguish each use form, and a classification number is given to each classified use form as information for identifying each use form.
- 1, 2 and 3 are assigned as classification numbers. In this case, the smaller the assigned classification number is, the larger the load on the part is (ie, the load of classification number 1 is maximum).
- the usage history is classified by associating the operation history of two parts (operation history of the engine speed and the pump pressure), but if necessary, based on the operation history of one part
- the usage mode may be classified, or three or more operation histories may be associated to classify the usage mode.
- the part replacement history information 240 storing the results of part replacement of each hydraulic excavator 1 is stored in the replacement history storage unit 24.
- the parts replacement history information 240 includes the date and time of replacement (replacement date and time) of parts (replaced parts) operated in the past in each hydraulic shovel 1, machine number where the parts operated, and
- the part operation time includes the part number of the part, the part type of the part, and the operation time of the part.
- the part operation time indicates the actual value of the time actually operating from the time when the operation of the part started to the time it is replaced (that is, the life of the part).
- the estimated life information storage unit 25 stores estimated life information 250 used when calculating the estimated life of each component operated by the hydraulic excavator 1.
- the estimated life information 250 includes, as shown in FIG. 4, the part type, the classification number, and the estimated life according to the usage mode.
- the estimated life by usage form indicates the estimated operation time (estimated life) of the part when the part is used in only each usage form, and in the present embodiment, the type and use form of each part It is determined in association with (classification number).
- FIG. 7 is a view showing the estimated life according to the use form according to the engine and the hydraulic pump for each classification number. As shown in this figure, for example, if the engine is continued to be used in the mode of use according to classification number 1, it can be seen that the life of the engine is LEa.
- the arithmetic and control unit 10 mainly operates the operation time calculation unit (target component operation time calculation unit) 11 of the part (target component) whose lifetime is to be estimated, and the life estimation unit (target component operation time) It functions as a target part life calculation unit 12).
- the operation time calculation unit 11 is based on the operation history of the target component stored in the operation history storage unit 22 and the determination threshold of the target component stored in the sensor related information storage unit 23 for each usage mode. It is a part which performs processing which computes operation time of object parts, respectively.
- FIG. 8 is a view showing an example of the operation history of the engine and the hydraulic pump in the hydraulic shovel 1.
- the operation history for each target component is classified using the determination threshold to calculate the operation time for each usage mode (classification number) for each day ing.
- the operation time of the target part for each usage mode is calculated by integrating the operation time of each day. For example, in FIG. 8, on the first day (d01) when utilization of the target part was started, the time operated with classification number 1 was Sa_d01, the time operated with classification number 2 was Sb_d01, and the time operated with classification number 3 The time is Sc_d01.
- the operation time in the use form according to classification number 1 is Ta, and in the use form according to classification number 2
- the operating time is Tb, and the operating time in the utilization mode according to classification number 3 is Tc.
- the operating time for each usage mode may be calculated by classifying the operation history from the first day to the Nth day at one time.
- the life estimation unit 12 determines the target based on the operation time of the target part for each usage type calculated by the operation time calculation unit 11 and the estimated life according to the usage type stored in the usage type estimated life storage unit 25. It is a part that executes a process of estimating the life of the part.
- the consumption life of the target part is calculated, and the remaining life of the target part is calculated from the consumption life.
- the operation time (for example, Ta, Tb, Tc in FIG. 8) of each use form (classification number) calculated by the operation time calculation unit 11 is estimated according to the use form corresponding to each use form.
- the consumption life ratio for each usage mode is calculated by dividing by the life (for example, LEa, LEb, LEc in FIG.
- the consumption life ratio of the target part is calculated by integrating the calculated consumption life ratio (for example, CE (described later) is calculated. Then, the remaining life of the target part is calculated by subtracting the calculated consumption life ratio from the average life of the target part. The consumed life and the remaining life calculated are output to the display device 3.
- FIG. 9 is an example of a flowchart of processing executed by the control device 2 according to the first embodiment of the present invention.
- the operation time calculation unit 11 inputs the operation history of the engine and the hydraulic pump that are the target parts via the engine speed sensor 41 and the pressure sensor 42, it determines the input operation history.
- the utilization modes of the engine and the hydraulic pump are classified into three as shown in the classification table of FIG. 6 using the threshold values R1, R2 and P1 (S601).
- the operating time calculation unit 11 calculates the operating time of the engine and hydraulic pump for each of the classified usage forms.
- the operation time for each usage form from the first day (d01) when operation of the target part (engine and hydraulic pump) is started to the present day (the Nth day (dN)) is calculated (S602) .
- the operating time of the utilization form related to classification number 1 is Ta
- the operating time of the utilization form related to classification number 2 is Tb
- the operating time of the utilization form related to classification number 3 is Tc It becomes.
- the operating time calculation unit 11 outputs the calculated operating times Ta, Tb, and Tc for each usage mode to the life estimation unit 12.
- the life estimation unit 12 uses the operation time (Ta, Tb, Tc) for each usage type calculated in S602, and the usage type set for each component type and each usage type (classification number) as shown in the table of FIG.
- the consumption life ratio CE of the engine and the consumption life ratio CP of the hydraulic pump are calculated using the estimated life (LEa, LEb, LEc, LPa, LPb, LPc).
- the consumption life ratio is calculated (S603), and the consumption life ratio of each target component is calculated by integrating the calculated consumption life ratio. Thereby, the consumption life ratio CE of the engine and the consumption life ratio CP of the hydraulic pump can be calculated (S604).
- the life estimation unit 12 calculates the remaining life ratio of each target part using the consumption life ratios CE and CP calculated in S604. As a method of calculating the remaining life ratio, there is a method of subtracting the consumption life ratios CE and CP from one. Here, the life estimation unit 12 further calculates the remaining life of each target part by multiplying the remaining life ratio by the average life of each target part (S605). The average life of each target part can be calculated, for example, by averaging the part operation time of the same type of replaced part. Then, the life estimation unit 12 outputs the remaining life calculated in S605 to the display device 3, and displays the remaining life of the engine and the hydraulic pump on the display device 3 (S606). Next, a display example of the life of the target part will be described with reference to the drawings.
- FIG. 10 is a display example of the life of the target part on the display device 3.
- a band graph 800 shown in this figure is a portion that displays the consumption life of the target part and is a portion that displays the consumption life display portion 800a hatched and the remaining life of the target part and the remaining life without hatching It comprises the display part 800b, and the length of the band shows the life of the object part.
- the life of the target part can be easily grasped by an operator, a manager or the like of the operating machine.
- the replacement time of the target part estimated from the life may be displayed.
- the operating time for each usage mode of the target part is calculated from the operation history of the target part and the determination threshold, and the operating time for each usage mode and estimation by usage mode
- the remaining life of the target part is calculated by using the life.
- the ratio of the consumption life to the total life and the ratio of the remaining life can be easily grasped by an operator, a manager, or the like.
- the consumption life is displayed together with the remaining life as shown in FIG. 10, first, the consumption life is calculated by multiplying the consumption life ratio calculated in S604 by the average life used in S605. A process of displaying the calculated consumption life together with the remaining life may be executed.
- FIG. 11 is another display example of the life of the target part on the display device 3.
- a plurality of band graphs 801, 802, 803 shown in this figure are times when the same parts are subjected to life prediction at predetermined times t1, t2, t3, t4, t5, t6 and t7 from the start of operation of the hydraulic shovel 1
- the consumption life and the remaining life at t5, t6 and t7 are shown.
- the upper band graph 801 in the figure shows the life at time t5
- the middle band graph 802 shows the life at time t6,
- the lower band graph 803 shows the life at time t7.
- the length of each band represents the length of time.
- the hatched part is the consumption life part that displays the consumption life
- the part that is not hatched is the remaining life part that displays the remaining life.
- the operating time of the target part for each usage pattern calculated by the arithmetic and control unit 10 (operating time calculator 11) (for example, S602 in the previous example)
- the operation times Ta, Tb, Tc) calculated in the above are displayed.
- the operation time of the target part for each usage pattern in FIG. 11 is displayed in association with the consumption life. That is, the density of the hatching applied to the consumption life part indicates the classification of the utilization form of the operation time, and the length of the band of the hatched part in the consumption life part is the length of the operation time. It shows. Further, the darker hatching indicates that the application mode is such that the load on the component is larger.
- the utilization form of consumption life part U3 is the largest in terms of load on components
- the utilization form of consumption life part U1 is the smallest in load
- the utilization form of consumption life part U2 is intermediate between the two.
- the usage pattern of the target part does not change between the times t1 to t7 at which the life prediction is performed.
- the length of the band graph 802 is greater than that of the band graph 801. Is also displayed short. That is, the component life is shortened due to the utilization form of time t5 to t6. Further, focusing on the consumption life portion U7 of the band graph 802 at time t7, the load is lightest at times t6 to t7, and the length of the band graph 803 is displayed longer than the band graphs 801 and 802. ing. That is, the component life is extended due to the utilization form of time t6 to t7.
- the length of the band indicating the component life changes in accordance with how the load is applied to the component (that is, the degree of wear of the component). It is an expression that displays the operation time of the target part of in relation to the consumption life. In this way, when the component life is displayed, the correlation between the form of use and the life can be known, and the operator can be urged to use the working machine to reduce the load on the component.
- the lifetime estimated at different time is displayed simultaneously, you may display these separately.
- the utilization form of the target part does not change between the times t1 to t7 at which the life prediction is performed, but the utilization form of the target parts changes between the times t1 to t7. May display only the utilization form that most contributed to the lifespan consumption during each of the times t1 to t7.
- a process is executed to compare the magnitude of the value obtained by dividing the operating time in each usage mode by the estimated life according to the usage mode. What is necessary is just to compare the magnitude
- FIG. 12 shows still another display example of the life of the target part on the display device 3.
- a plurality of band graphs 804 and 805 shown in this figure represent the consumption life and the remaining life at time t5 when life prediction is performed for different parts at predetermined time t1 to t5 from the start of operation of the hydraulic shovel 1 .
- the upper band graph 804 in the figure shows the life of the part A
- the lower band graph 805 in the drawing shows the life of the part B.
- the consumption life and the remaining life of the parts A and B displayed by the band graphs 804 and 805 are the points described in terms of the ratio when the total life (the sum of the consumption life and the remaining life) is 1, respectively. It differs from the two examples. That is, the length of each band from U1 to U5 represents the ratio of the operating time for each usage pattern to the consumption life. Further, since the band graphs 804 and 805 indicate the lifetimes of different parts A and B, even if the operation times of the parts A and B are the same, how to apply a load to each part A or B Is different. Therefore, the life ratio consumed in each is not the same.
- the lifetime consumption is made in the same utilization form in U1 and U2, but for the part A represented by the band graph 804, in the same form in U1 and U2 Life has not been consumed.
- the degree of how the load is applied to the parts appears as the length of the band of the consumption life portion. That is, the larger the load on the part is, the longer it is expressed, and the smaller the load is, the shorter it is expressed.
- the life comparison with other parts becomes easy.
- the existence of the parts can be easily recognized. Therefore, the plurality of parts can be replaced at the same time. Can be improved.
- the lifetimes of two parts are displayed, it is needless to say that the lifetimes of three or more parts may be displayed simultaneously.
- the estimated use life classified by use form stored in the use life estimated storage part 25 in the first embodiment is calculated from the results of parts replacement of a plurality of hydraulic shovels, and the calculated It is characterized in that the life of the target part is estimated using the estimated life according to the usage mode.
- FIG. 13 is a block diagram of the maintenance inspection system according to the second embodiment of the present invention.
- the maintenance and inspection system shown in this figure includes a plurality of hydraulic shovels (operating machines) 1A, 1B, ..., a maintenance and inspection information generation device 100, and a display device 3.
- the same reference numerals are given to the same parts as those in the previous drawing, and the description will not be repeated.
- Each of the plurality of hydraulic shovels shown in this figure includes a communication device 8 in addition to the same configuration (control device 2, sensor group 4, display device 3, etc.) as the hydraulic shovel 1 shown in FIG.
- an alphabet A, B etc.
- the control device 2 in each hydraulic shovel 1 outputs the operation history input from the sensor group 4 to the maintenance and inspection information generation device 100 via the communication device 8.
- the maintenance and inspection information generation device 100 generates maintenance and inspection information (for example, the life of each component) related to each component based on the operation history of each component input from the plurality of hydraulic excavators 1. , A storage device 20, and a communication device 30.
- the maintenance inspection information generated by the maintenance inspection information generation apparatus 100 is output to the display device 3 and displayed.
- FIG. 14 is a detailed view of the maintenance inspection information generation apparatus 100 and the hardware configuration around it.
- the storage unit 20 in the maintenance and inspection information generation apparatus 100 includes a configuration information storage unit 21, an operation history storage unit 22, and a sensor related information storage unit 23 as in the case shown in FIG. , An exchange history storage unit 24, and an estimated life storage unit 25 classified by use mode.
- the operation history storage unit 22 stores operation histories of parts of the plurality of hydraulic shovels 1A, 1B,... (Parts currently operated and parts operated in the past).
- the operation history detected by the sensor group 4 in each hydraulic excavator 1 is input to the maintenance and inspection information generation device 100 via the communication device 30, and stored in the operation history storage unit 22.
- FIG. 15 is a diagram showing an example of data stored in the exchange history storage unit 24 in the second embodiment of the present invention.
- the replacement history storage unit 24 includes the date and time of replacement of the replaced part which has been operated in the hydraulic excavator 1 in the past, the machine number where the replaced part has been operated, and the replaced part The part number, the part type of the replaced part, and the part operation time of the replaced part are stored.
- the arithmetic and control unit 10 of the maintenance and inspection information generation apparatus 100 has been replaced in addition to the target component operating time calculating unit (first operating time calculating unit) 11 and the target component life calculating unit 12 described above. It functions as a part operation time calculation unit (second operation time calculation unit) 13 and a usage type estimated life calculation unit 14.
- the replaced part operation time calculation unit (second operation time calculation unit) 13 is a part which has the same type as the target part (part for which the life is estimated) in the operation history stored in the operation history storage unit 22 (hereinafter, Target replaced parts for each usage pattern based on the operation history of “target replaced parts” and the same determination threshold as the target part among the determination thresholds stored in the sensor related information storage unit 23 Is a part that executes processing to calculate the operating time of the
- the operation time of the target replaced part for each use mode calculated here is output to the estimated use life calculator 14 for each use mode.
- the replaced part operating time calculation unit 12 may appropriately use the information stored in the configuration information storage unit 21 when specifying the replaced part of the same type as the target part, and identifies the operation history of the target replaced part.
- the information stored in the exchange history storage unit 24 may be appropriately used at the time of execution.
- FIG. 16 is a diagram showing an example of data of the operating time of the target replaced part for each usage pattern calculated by the replaced part operating time calculation unit 13 according to the second embodiment of the present invention.
- the engine and the hydraulic pump are targeted as in the first embodiment, and the operation histories of the replaced engine and the hydraulic pump are the same as the discrimination thresholds R1 and R2 of the first embodiment.
- P1 the operation time of the target replaced part for the three usage forms (classification numbers 1, 2 and 3) is calculated. If the operation time of each usage pattern for each target replaced part is integrated, it becomes equal to the part operation time of the part. That is, for example, the operating time for each application mode of the engine of part number e1 in FIG.
- n parts in which the part type is "engine” are stored in total, and m parts in which the part type is "pump" are stored in total.
- the estimated life calculation unit by usage mode 14 estimates the estimated life by usage mode by averaging the operating times of the target replaced parts for each usage mode calculated by the replaced part operating time calculation unit 13 for each usage mode. It is a part that executes the process of calculating.
- the estimated use life by use form calculated here is stored in the use life estimated life storage unit 25.
- the estimated life calculation portion by usage mode 14 appropriately utilizes information stored in the replacement history storage unit 24 or the like (for example, the part operation time of the target replaced part). Sometimes.
- FIG. 17 is an example of a flowchart of estimated usage life calculation processing by usage form executed in the maintenance and inspection information generation apparatus 100 according to the second embodiment of the present invention.
- the replaced part operating time calculation unit 13 reads a plurality of operating histories of replaced parts (engine and hydraulic pump) of the same type as the target part from the operating history storage unit 22, and each operating history Classification is made into three usage forms using the determination thresholds R1, R2, and P1 (S710). Then, based on the operation history classified in S710, the replaced part operating time calculation unit 13 integrates the operating time for each usage form for each target replaced part, and the operation for each usage mode of each target replaced part. Calculated as time (S720). An example is shown in FIG.
- the estimated life calculating unit by usage mode 14 calculates the operation time for each usage mode for each target replaced part calculated in S720 and the component operation of each target replacement part stored in the replacement history storage unit 24. Based on the time, an average operation time for each usage mode is calculated (S730). In the present embodiment, the processing of S731 to S734 described below is specifically executed in S730.
- FIG. 18 is an example of a flowchart of processing executed when the estimated use life calculator 14 according to the second embodiment of the present invention calculates the average operation time for each use mode.
- the estimated life calculating unit by usage mode 14 refers to the ratio of the operation time for each usage mode to the part operation time with respect to each target replaced part ("the operation time ratio by usage mode"). Calculate). That is, based on the part operation time (LEi) and the operation time for each use form (Taei, Tbei, Tcei, Tapj, Tbpj, Tcpj) using the following formulas (3) and (4), the use form classified by use form The time ratio (Raei, Rbei, Rcei, Rapj, Rbpj, Rcpj) is calculated (S731). That is, the operation time ratio by use mode is a value obtained by dividing the operation time of each use mode by the part operation time.
- the operation time for each usage mode is a value calculated in S720
- the component operation time is a value that can be read out from the replacement history storage unit 24.
- Formula (3) is an operation time ratio according to use mode corresponding to components classification "engine”
- Formula (4) is an operation time ratio according to usage mode corresponding to components classification "pump.”
- the estimated usage life calculation unit 14 configures a sample set in which the usage time ratio by usage mode and the component operation time are grouped for each usage mode, with respect to the usage time ratio by usage mode calculated in S731, Based on the sample set for each usage mode, an approximation formula by a quadratic polynomial is derived for each usage mode (S732).
- the approximate expression obtained in S732 is an expression showing the relationship between the usage time ratio by usage mode and the component operation time, and in this approximate expression, the component working time when the operation time ratio by usage mode is 1 is calculated. As the estimated part operation time for each usage pattern (S733). Then, the estimated component operating time for each usage mode calculated in S733 is output as the average operating time for each usage mode (S734).
- the average operation time (estimated component operation time for each usage mode) for each usage mode in S730 After calculating the average operation time (estimated component operation time for each usage mode) for each usage mode in S730, it is output and stored as the estimated life according to the usage mode of the target part in the usage estimated life storage unit 25 (S740) ).
- the estimated life of the target part engine and hydraulic pump
- the same processing as the processing described in the first embodiment is performed in the target part operation time calculation unit 11 and the target part life estimation unit 12.
- the life of the target part can be calculated.
- the life of the target part is displayed on the display device 3 based on the life of the target part calculated by the maintenance and inspection information generation apparatus 100, the same effects as those described in the first embodiment can be obtained. can do.
- the estimated life according to the usage form of each part is corrected by using the actual value of the life of the parts actually used in a plurality of operating machines. Therefore, the life estimation accuracy of each part can be further improved.
- the life of the target part is displayed via the display device 3 connected to the maintenance and inspection information generation device 100
- the life of the target part calculated by the maintenance and inspection information generation device 100 is It is configured to transmit to another display device (for example, a display device installed in the hydraulic shovel 1) via communication means such as wireless communication, and to display the life of the target component on the other display device. It is also good.
- the maintenance inspection information generation apparatus 100 executes a series of processing up to the calculation of the life of the target part, but the maintenance inspection information generation apparatus 100 performs the average operation time for each usage type It is limited to calculating the estimated life), and the calculated estimated life according to the use mode is transmitted to the hydraulic shovel 1 (operating machine) via communication means such as wireless communication, and the subsequent processing until the life calculation is the hydraulic shovel 1 And may be configured to execute. That is, in this case, the estimated use life classified by use form transmitted from the maintenance inspection information generation device 100 is stored in the estimated use life classified by use form storage unit 25 in the hydraulic shovel 1 described in the first embodiment. As a result, the hydraulic excavator 1 calculates the life of the target part based on the estimated life according to the usage mode.
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Abstract
Description
2 制御装置
3 表示装置
4 センサ群
8 通信装置
10 演算制御装置
11 対象部品稼働時間算出部(第1稼働時間算出部)
12 対象部品寿命推定部
13 交換済部品稼働時間算出部(第2稼働時間算出部)
14 利用形態別推定寿命算出部
20 記憶装置
21 構成情報記憶部
22 稼働履歴記憶部
23 センサ関連情報記憶部
24 交換履歴記憶部
25 利用形態別推定寿命記憶部
30 通信装置
41 エンジン回転数センサ
42 圧力センサ
100 保守点検情報生成装置
Claims (9)
- 複数の部品で構成される稼働機械であって、
前記複数の部品に含まれ寿命推定対象である対象部品の稼働履歴、当該稼働履歴に基づいて当該対象部品の利用形態を複数に分類するために用いられる判別閾値、及び当該利用形態ごとの前記対象部品の推定寿命を示す利用形態別推定寿命が記憶された記憶装置と、
前記対象部品の稼働履歴を前記判別閾値で分類することで前記利用形態ごとの前記対象部品の稼働時間をそれぞれ算出する処理、並びに、当該処理で算出した前記利用形態ごとの前記対象部品の稼働時間及び前記利用形態別推定寿命に基づいて前記対象部品の寿命を推定する処理を実行する演算制御装置とを備えることを特徴とする稼働機械。 - 複数の部品で構成される稼働機械であって、
前記複数の部品に含まれ寿命推定対象である対象部品の稼働履歴を検出する検出手段と、
前記検出手段による検出値の大小に基づいて前記対象部品の利用形態を複数に分類するために用いられる判別閾値、及び当該利用形態ごとの前記対象部品の推定寿命を示す利用形態別推定寿命が記憶された記憶装置と、
前記検出手段による検出値を前記判別式位置で分類することで前記利用形態ごとの前記対象部品の稼働時間をそれぞれ算出する処理、並びに、当該処理で算出した前記利用形態ごとの前記対象部品の稼働時間及び前記利用形態別推定寿命に基づいて前記対象部品の寿命を推定する処理を実行する演算制御装置とを備えることを特徴とする稼働機械。 - 請求項1又は2に記載の稼働機械において、
前記利用形態別推定寿命は、前記対象部品と同種の複数の交換済部品についての前記利用形態ごとの稼働時間に基づいて算出されていることを特徴とする稼働機械。 - 請求項1又は2に記載の稼働機械において、
前記演算制御装置は、前記対象部品の寿命を推定する処理において、前記利用形態別推定寿命に対しての前記利用形態ごとの前記対象部品の稼働時間の割合に基づいて前記対象部品の寿命を推定することを特徴とする稼働機械。 - 請求項1又は2に記載の稼働機械において、
前記演算制御装置で推定された前記対象部品の寿命を表示する表示手段をさらに備えることを特徴とする稼働機械。 - 請求項5に記載の稼働機械において、
前記表示手段は、前記対象部品の寿命とともに、前記演算制御装置で算出された前記利用形態ごとの前記対象部品の稼働時間を表示することを特徴とする稼働機械。 - 請求項5に記載の稼働機械において、
前記演算制御装置は、前記寿命を推定する処理として、前記対象部品の消費寿命及び残存寿命を算出する処理を実行し、
前記表示手段は、前記演算制御装置で算出された消費寿命及び残存寿命を表示することを特徴とする稼働機械。 - 複数の部品で構成される稼働機械の保守点検情報生成装置において、
前記複数の部品に含まれ寿命推定対象である対象部品の稼働履歴、当該稼働履歴に基づいて当該対象部品の利用形態を複数に分類するために用いられる判別閾値、及び当該利用形態ごとの前記対象部品の推定寿命を示す利用形態別推定寿命が記憶された記憶装置と、
前記対象部品の稼働履歴を前記判別閾値で分類することで前記利用形態ごとの前記対象部品の稼働時間をそれぞれ算出する処理、並びに、当該処理で算出した前記利用形態ごとの前記対象部品の稼働時間及び前記利用形態別推定寿命に基づいて前記対象部品の寿命を推定する処理を実行する演算制御装置とを備えることを特徴とする保守点検情報生成装置。 - 請求項8に記載の保守点検情報生成装置において、
前記記憶装置は、前記対象部品と同種の複数の交換済部品の稼働履歴を記憶しており、
前記演算制御装置は、前記交換済部品の稼働履歴を前記判別閾値で分類することで前記利用形態ごとの前記対象部品の推定寿命を示す利用形態別推定寿命を算出する処理を実行し、当該処理で算出した前記利用形態別推定寿命と前記利用形態ごとの前記対象部品の稼働時間に基づいて前記対象部品の寿命を推定する処理を実行することを特徴とする保守点検情報生成装置。
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CN201280020676.6A CN103502539B (zh) | 2011-04-28 | 2012-04-24 | 作业机械及保养检查信息生成装置 |
DE112012001901.6T DE112012001901T5 (de) | 2011-04-28 | 2012-04-24 | Arbeitsmaschine und Wartungs- und Inspektions-Informations-Erzeugungsvorrichtung |
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