JP5622642B2 - Working machine - Google Patents

Description

  The present invention relates to a work machine provided with means for notifying that an inspection time has come.

2. Description of the Related Art Conventionally, in a working machine such as a backhoe, there is a working machine that stores an inspection time of an inspection item in a memory in advance and notifies the inspection time when the inspection time stored in the memory or the like has arrived (for example, a patent Reference 1).
The work machine disclosed in Patent Document 1 includes a power source, an engine mounted on a vehicle body and started when the power is turned on, an operation signal generator that outputs an operation signal when the engine is in an operating state, and an operation signal generator A replacement instruction timer that outputs a replacement instruction signal when the time during which a signal is output reaches the replacement time of the consumables for work implements set in advance, and replacement from the replacement instruction timer It is comprised from the alerting device which alert | reports to the operator that the replacement time was reached when the instruction signal was output. In other words, the work machine disclosed in Patent Document 1 is configured to notify the operator when the replacement time (inspection time) arrives, so that the operator can know the inspection time of the consumables and perform the inspection.

As shown in Patent Document 1, there is a system disclosed in Patent Document 2 as a system that stores not only the time (inspection time) for performing maintenance (inspection) but also the inspection history of maintenance.
A construction machine inspection history information management system disclosed in Patent Document 2 is provided in a construction machine, a data control device that processes an operation time or a date and time, a control unit that displays a construction machine inspection item on a display unit, An input unit that allows an operator to input data for the inspection item displayed on the display unit; and a portable terminal that includes a storage unit that stores the data input by the input unit as inspection history data. The operation time or date time is input from the data control device via the first communication means, and the input operation time or date time and the inspection history data are associated with each other and stored in the storage means.

Japanese Patent Laid-Open No. 02-175349 WO2007 / 080835

  By using the techniques of Patent Document 1 and Patent Document 2, maintenance can be performed when the inspection time comes, and the inspection history can be left. However, in the technique of Patent Document 2, although inspection history data can be stored, the storage destination is a mobile terminal that is an external terminal different from the work machine, and the work machine and the mobile terminal are separated from each other. It is the structure which can do. For this reason, when the work machine is moved to another company due to resale or the like, the inspection history of the work machine may not be confirmed unless the portable terminal is also moved to another company. In particular, in a rental company or construction company that owns multiple work machines, when the work machine moves to another company, it becomes complicated to organize the connection (relevance) between the mobile device and each work machine. There is. In such a case, it may be very difficult to check the inspection history.

  In recent years, work machines such as backhoes are not only used by rental companies and construction companies that own multiple work machines as described above, but also by users and rental companies that own work machines. A user who rents a work machine from the machine may also perform maintenance on the work machine. In addition, since there are various rental companies and construction companies with different scales, work machines are not only used in specific narrow areas, but may be used in various areas over a wide range. Due to circumstances, the necessity of maintenance (maintenance frequency) for work machines is different for each work machine. In other words, the form of maintenance of the work machine has been diversified according to various use forms (usage degree, regional characteristics such as coldness, use method).

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a work machine that can easily check an inspection history corresponding to a work machine and that corresponds to diversified maintenance modes. .

The technical means of the present invention for solving this technical problem is characterized by the following points.
In the work machine according to claim 1, stored in the inspection time storage means for storing information on the inspection time of inspection items, the inspection time notification means for informing that the inspection time has arrived, and the inspection time storage means. An inspection time changing means for updating the information related to the inspection time to change the inspection time, an inspection result storage means for storing the inspection results of the inspection items, and an inspection result output means for outputting the inspection results are provided. And

In the work machine according to a second aspect, it is preferable that the inspection time changing means updates an inspection interval stored as information on the inspection time.
In the work machine according to a third aspect, it is preferable that the inspection result storage unit is configured to store the inspection result transmitted from the outside.
In the work machine according to a fourth aspect, it is preferable that the inspection time changing means is configured to update information related to the inspection time stored in the inspection time storage means in accordance with an instruction from the outside.

In the work machine according to claim 5, the inspection result storage means is configured to store the inspection result based on an operation time and / or date, and the inspection time changing means is based on the operation time or date. It is preferable to change the inspection time.
The most preferred technical means of the present invention are as follows.
The work machine according to the present invention includes a display device capable of displaying information related to operation, a control unit that controls display of the display device, an inspection time storage unit that stores information related to an inspection time of an inspection item, and an inspection of the inspection item. A storage unit including an inspection result storage unit that stores an actual result, and the control unit updates the information about the inspection time stored in the inspection time storage unit to change the inspection time; and Inspection time notifying means for notifying that the inspection time has arrived, and inspection result output means for outputting the inspection result of the inspection item to the outside, the inspection result storage means is provided to the inspection item from the outside When the corresponding inspection result is input to the control unit, the inspection result already stored as the inspection of the inspection item received by the control unit is input to the control unit. And updates to the inspection results.
The inspection time changing means is configured to update an inspection interval stored as information relating to the inspection time, and the inspection time notification means is configured to update the display device when notifying that the inspection time has arrived. The inspection time which arrived on the screen is displayed, and the inspection item which has reached the inspection time is displayed after the inspection time is displayed.

The present invention has the following effects.
According to the first aspect of the present invention, the inspection history (inspection results) corresponding to the work implement can be easily confirmed, and the maintenance time (inspection time) can be changed according to the use form of the work implement. it can.
According to the invention of claim 2, the inspection interval (inspection interval) can be changed at any time as necessary.

According to the invention according to claim 3, the inspection results transmitted from the outside can be kept in the work machine, and even if the form of performing maintenance changes due to the change of the supplier performing maintenance (inspection), It is possible to properly maintain the inspection history of the work implement.
According to the invention according to claim 4, even if the form of performing maintenance of the work machine is changed due to a change in a contractor performing maintenance (inspection), that is, even if the use form of the work machine is changed, it is appropriate. Can notify the inspection time.

  According to the invention which concerns on Claim 5, execution of a periodic inspection can be managed appropriately according to the use condition of a working machine.

1 is an overall view of a maintenance management system in which an external terminal is connected to a work machine according to a first embodiment of the present invention. It is a block diagram which shows the structure of the display apparatus of a working machine. It is the figure which showed the whole front surface of the display apparatus. It is a figure which shows an inspection setting storage table. It is a figure which shows an inspection performance table. It is a figure which shows the warning (notification of inspection time) etc. which were displayed on the display device when the inspection time has come. It is a figure which shows the example of the screen display of an external terminal. It is a figure which shows the other example of the screen display of an external terminal. It is a figure explaining the instruction | indication of an inspection completion. It is a figure which shows the whole working machine side view.

Hereinafter, a working machine according to an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is an overall view of a maintenance management system in which an external terminal is connected to a work machine according to a first embodiment of the present invention. The maintenance management system includes a work machine 1 having a display device 25, which will be described later, and an external terminal 32 composed of, for example, a personal computer. The work machine 1 and the external terminal 32 are connected by electrical or optical wiring such as a communication cable. Before describing the external terminal 32, the configuration of the work machine 1 and the configuration of the display device 25 will be described.

FIG. 10 shows an example of the work machine 1 in the work machine maintenance management system.
As shown in FIG. 10, the work machine 1 includes a traveling device 2 and a revolving structure 3 disposed on the upper portion of the traveling device 2.
The traveling device 2 includes a pair of left and right traveling bodies 4 each having a rubber cover, and employs a crawler traveling device in which both traveling bodies 4 are operated by a traveling motor M. A dozer 5 is provided at the front of the traveling device 2.

  The swivel body 3 includes a swivel base 12 supported on the traveling device 2 via a swivel bearing 11 so as to be turnable in the left-right direction around a swivel axis in the vertical direction, and a working device 13 (excavation) provided at a front portion of the swivel base 12. Device). On the swivel base 12, an engine, a radiator, a driver's seat 9, a fuel tank, a hydraulic oil tank, a cabin 14, and the like are provided. The driver's seat 9 is surrounded by the cabin 14. Around the driver's seat 9, a display device 25 that displays various information related to the work machine 1 is provided.

The work device 13 is supported at the front portion of the swivel base 12 by being offset slightly to the right from the central portion in the left-right direction, and is supported by the support bracket 16 so as to be swingable to the left and right around the vertical axis. The swing bracket 17 is provided. In addition, the work device 13 includes a boom 18, an arm 19, and a bucket 20.
The boom 18 is supported so as to be able to swing up and down by pivotally mounting its base side about the left and right axial centers of the swing bracket 17. The arm 19 is pivotably mounted around the axis in the left-right direction on the tip side of the boom 18 and is supported so as to be able to swing back and forth. The bucket 20 is provided on the distal end side of the arm 19 so that a squeeze / dump operation is possible.

  The swing bracket 17 is swung by expansion and contraction of a swing cylinder provided in the swivel base 12. The boom 18 is swung by expansion and contraction of a boom cylinder 22 interposed between the boom 18 and the swing bracket 17. The arm 19 is swung by the expansion and contraction of the arm cylinder 23 interposed between the arm 19 and the boom 18. Finally, the bucket 20 is squeezed and dumped by the expansion and contraction of the bucket cylinder 21 interposed between the bucket 20 and the arm 19.

The display device 25 will be described in detail with reference to FIGS.
As shown in FIG. 2, for example, the display device 25 displays information on various devices (sometimes simply referred to as devices) mounted on the work machine 1, or the device inspection time (maintenance time) has arrived. And information for performing various settings of the device is displayed.

As shown in FIG. 2, the display device 25 includes an input unit 26 for performing various settings of the work machine 1, a display unit 27 for displaying information related to the work machine 1, and a control unit 28 including a CPU and the like. And a storage unit 29 composed of a nonvolatile memory such as an EEPROM.
Signals (information) from various devices mounted on the work machine 1 and signals from the input unit 26 are input to the control unit 28. Specifically, the control unit 28 includes, for example, a remaining fuel amount output from the fuel sensor, an engine coolant temperature output from the water temperature sensor, an engine oil pressure switch for detecting a decrease in engine oil pressure, and an engine speed. Various input signals output from the input unit 26 are input.

As shown in FIG. 3, the display unit 27 displays information represented by various characters, graphics, and the like, and the variable display unit 30 that can change the content to be displayed, and works by turning on and off the display. And a fixed display unit 31 representing the state of the machine 1.
The fixed display unit 31 includes a warning / caution lamp 31a, an oil lamp 31b, a battery lamp 31c, and a traveling lamp 31d. The warning attention lamp 31a is a lamp that urges attention and warning by turning on when the work machine 1 is in operation. The oil lamp 31b is a lamp that indicates a shortage of engine oil when lit. The battery lamp 31c is a lamp that indicates a shortage of battery power when lit. The traveling lamp 31d is a lamp that indicates that the work implement 1 is traveling at a high speed when turned on.

  The warning and caution lamp 31a, the oil lamp 31b, the battery lamp 31c, and the traveling lamp 31d described above are turned on to indicate that the corresponding states are occurring. The fixed display unit 31 may be other than the warning and caution lamp 31a, the oil lamp 31b, the battery lamp 31c, and the traveling lamp 31d as long as the information about the work machine 1 is indicated by turning on and off.

  The variable display unit 30 is composed of, for example, a liquid crystal. The variable display unit 30 changes various characters, numbers, and figures to be displayed by changing the dot display of the liquid crystal, and displays various information regarding the work machine 1. As shown in FIG. 3, for example, the variable display unit 30 displays a graph of the remaining amount of fuel output from the fuel sensor on the left side, or a graph of the coolant temperature of the engine coolant output from the water temperature sensor on the right side. To display. In addition, the variable display unit 30 displays information necessary for operating the work machine 1 and information for notifying the inspection (maintenance) of the check items of the work machine 1.

The input unit 26 includes a plurality of button switches SW (SW1, SW2, SW3, SW4, SW5) corresponding to predetermined functions. The plurality of button switches SW are provided in parallel in the left-right direction adjacent to the variable display unit 30.
For example, the button switch SW1 is used to perform various settings of the work machine 1, and the button switch SW2 is used to set the work mode to the hanging work mode. The button switch SW3 is for restricting the swing range of the arm 17 of the working device 13, and the button switch SW4 is for giving a user a fixed guidance (information) by the variable display unit 30. It is. Finally, the button switch SW5 is for switching the display of the variable display section 30. Each button switch SW is not limited to having the above-described functions, but may have other functions.

The storage unit 29 includes an accumulated operation time storage unit 33 that stores (hour meter) that is an accumulated operation time of the work machine 1, an inspection time storage unit 34 that stores information on the inspection time of inspection items, and an inspection result storage unit. 35.
Specifically, when the engine is operated and the rotation speed of the engine is input to the control unit 28, the control unit 28 counts up the operation time, and the operation time is counted in the past. The cumulative operating time is obtained by adding to the operating time. Then, the accumulated operation time obtained by the control unit 28 is sent to the accumulated operation time storage means 33, and the accumulated operation time is stored in the accumulated operation time storage means 33.

The inspection time storage means 34 stores information related to inspection times for a plurality of predetermined inspection items. That is, the inspection time storage means 34 stores necessary information for obtaining the inspection time of each inspection item. The inspection time storage means 34 includes an inspection setting storage table.
The inspection setting storage table 34 stores the first inspection time for calculating the first inspection time of each inspection item, the periodic inspection interval (inspection interval, that is, inspection interval) of each inspection item, and the second and subsequent periodic inspections. And a flag (0: no, 1: yes) indicating whether or not to use is held.

Specifically, the inspection setting storage table 34 includes “address” and “setting value”. The “explanation” shown in FIG. 4 describes the contents (explanation about the object (inspection item) for setting the inspection interval etc.) stored (stored) in the inspection setting storage table 34.
Addresses 100 to 102 hold information related to the inspection timing of “engine oil” among a plurality of inspection items. At the address 100, the time when the engine oil is checked for the first time after the manufacturing of the work machine 1 is held in the form of an hour meter, and the time for checking the engine oil for the first time after the manufacturing is 500 hours in the hour meter.

  In the address 101, an interval (inspection interval) of a periodic inspection performed after the first inspection set in the address 100 is held in the form of an hour meter, and the inspection interval is 500 hours in the hour meter. As a result, after the first inspection set at the address 100, the engine oil is periodically inspected every 500 hours based on the hour meter. That is, the second time obtained by adding 500 hours, which is the first inspection time (first inspection time), and every 500 hours (periodic inspection interval) to the addresses 100 to 101 of the inspection setting storage table 34. The subsequent inspection time is stored. In summary, i-th inspection time = first inspection time + (i−1) × periodic inspection interval, and information on the inspection time stored in the inspection setting storage table 34 (first inspection time, periodic inspection interval) Can be used to determine the inspection time. Thus, the inspection time is calculated from a program stored in the control unit 28 (inspection time calculation means 43).

Address 102 holds a value (flag) for selecting whether or not to calculate the inspection time for the second and subsequent times by adding the inspection interval of address 101 to the first inspection time (initial value) of address 100. Yes.
As shown in FIG. 4, when the flag is “1”, the first engine oil check time is 500 hours set at the address 100, and the second and subsequent check times are 500 set at the address 101. Every hour, it becomes 1000 hours, 1500 hours, 2000 hours.

  When the flag is “0”, the 500 hours set at the address 100 are not taken into account when obtaining the inspection time. In this case, when 500 hours have passed with the hour meter from the latest engine oil check time held in the check result table 35 described later, the check time is set. That is, if the latest engine oil check time is 1300 hours, 1800 hours after 500 hours have passed as the next check time.

  In FIG. 4, in addition to the engine oil described above, settings for the air cleaner element at addresses 131 to 133 and settings for the engine oil filter at addresses 167 to 169 are shown. The inspection items of the work machine 1 are not limited to those shown in FIG. The inspection setting storage table 34 in FIG. 4 includes other inspection items such as replacement of parts such as oil, filters, and elements, and visual inspection of movable parts and structures.

The inspection setting storage table 34 stores information on the inspection time for obtaining (leading) the inspection time, but the inspection time itself after the second time may be stored. The inspection setting storage table 34 stores the inspection time indicated by the hour meter. Alternatively, the inspection time indicated by the date, time, day of the week, etc. may be stored.
As shown in FIG. 5, the inspection result storage means 35 includes an inspection result table that stores information related to the inspection result. In the inspection result table 35, the hour meter when each inspection item has been in the past, the date when each inspection item has been in the past, and the warning of the inspection item "Notice of inspection (notification)" , The warning “inspection notification (notification)”, that is, the previous hour (previous) hour meter (service hour meter) serving as a warning reference is held.

  That is, the addresses 259 to 264 hold the inspection results of the engine oil of the work machine 1, that is, the inspection history of the engine oil. The address 259 holds the hour meter value (time) at the time of engine oil check “a times before”. The value (time) of the hour meter at the time of checking the engine oil “a time before” is 500 hours. The address 260 holds the date when the engine oil was checked “a times before”. The date at the time of engine oil check “a time before” is 2009/10/03 (October 3, 2009).

Similarly, the address 261 and the address 262 hold the value and date of the hour meter when the engine oil was checked “b times before”, and the addresses 263 and 264 held the engine oil check “c times before”. The hour hour value and date are retained.
The address 265 stores the number of times (indication of the service hour meter) that the inspection time of the engine oil was notified (warning) by the inspection setting storage table 34 on the display unit 27. Cleared to zero when completed (check completed). At the address 266, the hour meter when the previous inspection time is notified (when a warning is given) is held as a service hour meter.

  For example, the addresses 265 and 266 shown in FIG. 5 are after the last inspection time, March 25, 2011, and the hour meter is approaching 2000 hours, and the inspection time is notified to the display unit 27 five times. The status is shown, and at this point in time, inspection is not completed, so the service hour meter is also 1500 hours. When inspection is performed and the inspection result table 35 is updated as will be described later, the service hour meter display count at the address 265 is updated from “5” to “0”, and the service hour meter is also “1500 hours”. To "2000 hours".

  In the description corresponding to the addresses 259 to 264, “a times before” to “c times before” are indicated. With these marks alone, it is not possible to determine which is “one time before” and which is “two times before”. Therefore, in the present embodiment, the values (“hours” or “dates”) held in “a times before” to “c times before” are compared to identify the address indicating the oldest value. As far as the hour meter and date shown in FIG. 5 are concerned, the addresses 259 and 260 indicating “a times before” indicate the oldest values of “3 times before”, and “b times before” indicates “2 times before”. "," C times before "indicates the value of" 1 time before (previous) ".

In addition, when the next periodic inspection of engine oil is carried out, the value of “a previous” indicating the oldest “3 times previous” value is changed to the value (newest value) at the next periodic inspection. Updated. As a result of this update, the value indicated by “b times before” is the oldest value from “2 times before” to “3 times before”, and the value indicated by “c times before” is from “1 time before” to “2 times before” Value.
In the present embodiment, the oldest value among the values indicated by “a times before” to “c times before” is determined and updated. In this way, in the above example, since it is not necessary to update other than the values of the address 259 and the address 260, the inspection result table 35 can be easily updated.

Similarly to the addresses 259 to 266, the addresses 275 to 282 hold values related to the air cleaner element, and the addresses 291 to 298 hold the values related to the engine oil filter as well as the addresses 259 to 266.
Among the values related to the air cleaner element, the value held at the addresses 277 to 280 is 0, but this is the periodical inspection time after “a” before 1000 hours of the hour meter (date June 15, 2010). Has not been visited or periodic inspections have not been carried out.

  FIG. 5 also shows the inspection history of the air cleaner element and the engine oil filter in addition to the engine oil, as in FIG. Since the inspection items of the work machine 1 are not limited to those shown in FIG. 5, in the inspection result table 35 of FIG. 5, as in FIG. 4, parts such as oil, filters, elements, etc. Visual inspection and the like are included as other inspection items.

The inspection results stored in the inspection result table 35 may be updated when an instruction to complete the inspection is given to the display device 25 as described above, or the inspection results are checked using the external terminal 32 as described later. The update may be performed when a completion instruction (clicking an update button) is issued.
Such a storage unit 29 may not necessarily be provided in the display device 25, may be separated from the display device 25, and may be provided separately. For example, the storage unit 29 may be provided in a storage device of a main ECU (electronic control unit) of the work machine 1. It does not matter if it is incorporated.

Next, the control unit 28 will be described with reference to FIGS.
The control unit 28 controls the entire operation of the display device 25, and includes an inspection time notification unit 40, an inspection result output unit 41, an inspection time change unit 42, and an inspection setting output unit 44. . These inspection time notification means 40, inspection result output means 41, inspection time change means 42, and inspection setting output means 44 are constituted by programs stored in the control unit 28.

  The inspection time notification means 40 displays a warning regarding the periodic inspection item on the display unit 27 to notify that the inspection execution time for the inspection item has arrived. Specifically, first, the inspection time notification means 40 reads data of each inspection item (first inspection time, inspection interval, flag) from the inspection setting storage table 34 stored in the storage unit 29. And the inspection time of each inspection item is calculated | required by the inspection time calculation means 43 using the read data. The inspection time is a value larger than the service hour meter at the time of the previous warning, that is, the service hour meter in the previous warning, and is the latest inspection time (the closest inspection time). Note that the inspection time may be obtained by adding the periodic inspection interval read from the inspection setting storage table 34 to the service hour meter read from the inspection performance table 35.

  After obtaining the closest inspection time, the inspection time notifying means 40 compares the inspection time (hour meter value) obtained for each inspection item with the current hour meter. At this time, when the inspection time (hour meter) required by the current hour meter approaches within a predetermined time, or when the inspection time (hour meter) required by the current hour meter is exceeded, an alarm ( (Informing that the inspection time has come) is displayed on the variable display section 30 of the display section 27.

  As shown in FIG. 6, when there is an inspection item whose inspection time is within a predetermined time (for example, within 10 hours), the variable display unit 30 displays the content shown in FIG. The variable display unit 30 in FIG. 6A displays a diagram indicating that the inspection time has come (for example, a “spanner” mark) on the upper left, and further indicates that the inspection time is 500 hours on the hour meter on the upper right. “500h” is displayed.

  The variable display unit 30 further displays a message “inspection time” at the center, and a “white i” mark indicating that warning information (notification information) is displayed at the lower right. When the button switch SW4 is pressed in this state, as shown in FIG. 6 (b), the variable display unit 30 displays inspection items that reach the inspection time in 500 hours, such as “working oil” and “travel motor gear oil”. indicate.

In addition, as shown in FIG. 6C, when the current hour meter has exceeded the inspection time (500 hours), a message “The inspection time has passed” is displayed. When the button switch SW4 is pressed from the state shown in FIG. 6C, the variable display unit 30 displays the inspection items that reach the inspection time as shown in FIG. 6B.
The inspection result output means 41 outputs the inspection result, that is, the data of the inspection result table 35 stored in the storage unit 29 to the external terminal 32 and the display device 25.

  The inspection time changing means 42 changes the inspection time by updating information on the inspection time stored in the inspection time storage means 34. In this embodiment, the inspection time changing means 42 updates the “periodic inspection interval” in the inspection setting storage table 34 of the storage unit 29 according to an instruction from the outside, thereby changing the inspection time. The inspection setting output means 44 outputs inspection settings, that is, data of the inspection setting storage table 34 stored in the storage unit 29 to the external terminal 32 and the display device 25.

Hereinafter, the inspection result output means 41, the inspection time change means 42, and the inspection setting output means 44 will be described in detail.
As shown in FIG. 1, in order to output inspection results or change the interval between periodic inspections, first, an external terminal 32 having a display screen such as a personal computer is provided in the work machine 1 via a communication cable. By connecting a designated connector (not shown), the external terminal 32 and the display device 25 (control unit 35 → 28) can perform data communication. In FIG. 1, the external terminal 32 and the work machine 1 are connected using a communication cable, but may be connected by wireless communication instead of wired communication.

  When the data transmission request is sent from the external terminal 32 to the control unit 28, the inspection record output means 41 transmits the data in the inspection record table 35 to the external terminal 32 in response to the data transmission request from the external terminal 32. Similarly, when there is a request for data transmission from the external terminal 32 to the control unit 28, the inspection setting output means 44 sends the “first inspection time” and “periodic inspection interval” in the inspection setting storage table 34 to the external terminal 32. Send. When the external terminal 32 is connected to the work machine 1, data other than those described above can be acquired from the work machine 1.

When the external terminal 32 acquires the data of the inspection result table 35 from the inspection result output means 41 and the data of the inspection setting storage table 34 from the inspection setting output means 44, the external terminal 32 displays the display screen of the external terminal 32 based on these data. The maintenance information 37 of the work machine 1 is displayed.
7 and 8 show the maintenance information 37 displayed on the display screen of the external terminal 32. FIG.

  In the maintenance information 37 of FIG. 7A, the model and chassis number of the work machine 1, the current hour meter of the work machine 1, the current time, and the like are displayed on the upper stage, and “part” and “replacement interval ( hr) ”,“ exchange history (previous) ”,“ excess time ”,“ exchange alarm ”,“ execution ”, and“ replacement procedure ”are displayed in the maintenance information 37 as columns. In the maintenance information 37, “part” is an item (part) that is a target of periodic inspection (replacement), and is extracted from the inspection item of the inspection result table 35.

  The “replacement interval (hr)” is a periodic inspection interval for the inspection item indicated by “part”, and is extracted from the set value of the inspection setting storage table 34. Depending on the “part”, the “exchange interval (hr)” is divided into “first time” and “second time and later”. This is because in the inspection setting storage table 34, there are “parts” having different values of “initial inspection time” and “periodic inspection interval”.

The “replacement history (previous)” is the latest value among the values “a” to “c” extracted from the inspection result table 35 for each “part”, and the hour meter value (hr) And the date is shown.
“Excess time” is the number of hours that exceeded the inspection time, and the periodic inspection time calculated from the value displayed in “Replacement interval (hr)” is compared with the current hour meter, and the calculated inspection time is calculated. Displays the number of hours exceeded.

The “replacement alarm” is a warning (notifying periodic inspection) that prompts replacement of “parts” that have exceeded the inspection time, and displays a “spanner” mark.
“Implementation” is a column in which a check mark indicating completion of replacement is entered for a part subjected to periodic inspection (replacement).
“Replacement procedure” is a button that is pressed to display a screen that explains the replacement procedure of the corresponding part.

On the lower right side of the maintenance information 37, three buttons of “exchange history”, “update”, and “close” are arranged. The “replacement history” is a button for displaying the past three replacement histories (inspection history) held in the inspection result table 35 for each “part”.
“Update” is for updating the contents of the currently displayed maintenance information display screen by pressing a check mark in the “execution” column or after changing the “replacement interval (hr)” value. It is a button. When this “update” button is pressed, the external terminal 32 instructs the inspection result output means of the control unit 28 of the display device 25 to update the inspection result table 35 and the inspection time change means 42 stores the inspection setting storage table 34. Instruct update.

“Close” is a button that is pressed to end the display of the maintenance information 37.
FIG. 7A will be specifically described. For example, the maintenance information 37 No. 1, the “change time (hr)” of the engine oil is 500 from the value held in the inspection setting storage table 34. In the “replacement history (previous)”, the hour (hr) is 490 and the date is 2009/11/29 based on the value held in the inspection result table 35.

The replacement interval of the engine oil is 500 hours, and since the replacement was performed in the previous 490 hours, the next replacement is necessary at the time of 1000 hours. On the other hand, since the current hour meter is 1010 hours, the engine oil replacement time has exceeded 10 hours. These 10 hours are displayed in the “excess time” column.
Since the engine oil has reached the time for replacement in this way, a “spanner” mark warning is displayed in the “replacement alarm”.

  As shown in FIG. 7B, a check mark is added to the “execution” column for the parts that have been replaced. “Engine oil”, “hydraulic oil”, “air cleaner element”, “fuel filter cartridge”, and “suction filter” are marked with a check mark indicating completion of replacement. When the check mark is entered, the “wrench” mark disappears, and at the same time, the current hour meter and date are displayed in the “exchange history (previous)”. When the check mark in the “Implementation” column is removed, the display before the check mark is entered is restored.

  As shown in FIG. 8A, when an “update” button is pressed after a check mark is entered, the inspection item for which the check mark is entered is completed, and the external terminal 32 updates the content of the maintenance information 37. At the same time, the external terminal 32 outputs an instruction to update the data in the inspection result table 35 to the control unit 28. The control unit 28 updates the oldest hour meter and date value among “a times before” to “c times before” in the inspection result table 35 in accordance with the update instruction.

  In the external terminal 32, not only an instruction to update the inspection result table 35 is given by putting a check mark in the “execution” column, but also a value of “replacement interval (hr)” is input and the “update” button is pressed. Thus, an update instruction for the inspection setting storage table 34 is output to the inspection time changing means 42 of the control unit 28. The inspection time changing means 42 acquires the updated first inspection time from the external terminal 32 according to the update instruction, and updates the first inspection time in the inspection setting storage table 34. When an update instruction for the inspection setting storage table 34 is output to the inspection time changing means 42 of the control unit 28, the inspection time changing means 42 newly acquires a periodic inspection interval from the external terminal 32 and stores it in advance. Update the scheduled periodic inspection interval. As described above, since the numerical value of the periodic inspection interval is changed by the inspection time changing means 42 in accordance with the update instruction from the external terminal 32, the inspection time can be changed.

For example, in the maintenance information 37 of FIG. 8 (a), when the engine oil “change interval (hr)” value is changed from 500 to 450 and the “update” button is pressed, the inspection time changing means 42 4 is updated from 500 to 450, the value of “interval of engine oil periodic inspection” held at the address 101 of the inspection setting storage table 34 shown in FIG.
As described above, the external terminal 32 can acquire the inspection results from the inspection result table 35 and can acquire various setting values in the inspection from the inspection setting storage table 34. Further, the external terminal 32 can update the inspection result table 35 and the inspection setting storage table 34 held in the work machine 1 by an update instruction to the work machine 1.

Finally, when the “replacement history” button is pressed in the maintenance information 37 of FIG. 8A, the replacement history for the past three times as the maintenance information 37 is displayed on the display screen as shown in FIG. Is displayed. This replacement history can be used as a reference for actual inspection.
As described above, according to the present invention, since the inspection history (inspection results) is stored in the inspection result table 35, the inspection history (inspection results) corresponding to the work implement 1 can be easily confirmed by using the external terminal 32. be able to. For example, after the work machine 1 is sold to a rental company “Company A” and the work machine 1 is rented to a plurality of users by the company A, the work machine 1 is resold to a company B different from the company A. Even if it is done, if the inspection history stored in the inspection result table 35 is viewed, the state of inspections performed in the past company A can be easily grasped in the reseller B company. Even if the work machine 1 is repeatedly resold, the inspection history of the work machine 1 can be grasped.

Furthermore, since the interval of the periodic inspection in the inspection setting storage table 34 can be changed, inspection corresponding to diversified maintenance modes can be performed. For example, as described above, the work machine 1 may be used (owned) by the rental company “Company A” or “Company B” or an individual by repeating resale, for example. In such cases, each user (owner) has different usage patterns (degree of use, regional characteristics such as coldness, usage method), so check according to the usage pattern of each user. There are various forms of maintenance. In the present invention, the interval between periodic inspections can be freely changed. Therefore, if the interval between the periodic inspections is changed according to each user's usage mode (maintenance mode), it is adapted to the maintenance mode. Notification of the inspection time can be made, and the inspection can be performed without forgetting the owner.
[Second Embodiment]
A working machine according to a second embodiment of the present invention will be described with reference to FIG. Unlike the first embodiment, the work machine according to the present embodiment designates completion of inspection using the display device 25 instead of the external terminal 32.

  If there is an inspection item whose inspection time is within a predetermined time (for example, within 10 hours), the variable display unit 30 displays “500h” indicating that it is the inspection time, as shown in FIG. At the same time, the message “Checking time” is displayed for a predetermined time. Further, as shown in FIG. 9B, when the inspection time has passed, a message “The inspection time has passed” is displayed for a predetermined time. And as shown in FIG.9 (c), when the predetermined time passes, the variable display part 30 will show the inspection confirmation screen ("Is inspection done?") Which shows the message which confirms whether inspection was completed or not. When the button switch SW5 is pressed on this inspection confirmation screen, the completion of inspection can be instructed to the display device 25. When the inspection is completed, the inspection history (inspection result) in the inspection result table 35 is updated as in the first embodiment. In addition, as shown to Fig.9 (a) and FIG.9 (b), you may make it switch to the inspection confirmation screen shown in FIG.9 (c) by pushing button switch SW4.

  In the second embodiment, the inspection completion instruction is performed using the display device 25. In addition, the display device 25 is provided with the function of the external terminal 32 in the first embodiment. May be. Specifically, the control unit 28 includes maintenance information display means (not shown). This maintenance information display means is constituted by a program or the like stored in the control unit 28.

  When the button switch SW or the like of the display device 25 is operated, the variable display unit 30 switches from the normal screen shown in FIG. 3 or the like to a maintenance information display screen that displays maintenance information 37. Then, by operating a plurality of button switches SW while viewing the maintenance information display screen displayed on the variable display section 30, a check mark is put in the “execution” column of the maintenance information 37, an “update” button, etc. By pressing, it is possible to cause the display device 25 to perform the same operation as that of the external terminal 32 of the first embodiment.

That is, by displaying the maintenance information 37 on the display device 25 and operating the button switch SW, it is possible to update the initial inspection time, periodic inspection interval, and inspection results in the inspection setting storage table 34.
The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  For example, in each of the above-described embodiments, the inspection history (inspection results), the inspection time, and the inspection interval may be set not by the accumulated time or elapsed time based on the hour meter but by the accumulated days or elapsed days.

DESCRIPTION OF SYMBOLS 1 Work implement 2 Traveling device 3 Revolving body 4 Traveling body 5 Dozer 9 Driver's seat 11 Swivel bearing 12 Swivel stand 13 Working device 14 Cabin 16 Support bracket 17 Swing bracket 18 Boom 19 Arm 20 Bucket 21 Bucket cylinder 22 Boom cylinder 23 Arm cylinder 25 Display device 26 Input unit 27 Display unit 28 Control unit 29 Storage unit 30 Variable display unit 31 Fixed display unit 32 External terminal 33 Operation information 34 Inspection time storage means (inspection setting storage table)
35 Inspection result storage means (inspection result table)
37 Maintenance information 40 Inspection time notification means 41 Inspection result output means 42 Inspection time change means 43 Inspection time calculation means 44 Inspection setting output means SW Button switch

Claims (4)

A display device capable of displaying information about the operation, the display control unit for controlling the display of the device, inspection results storage for storing inspection results of the inspection time storage unit and the inspection items for storing information about the inspection time of the inspection items A storage unit including means ,
Wherein the control unit includes a check timing changing means for changing the timing check and update the information about the inspection time stored in the inspection time storage unit, and inspection time notification means for notifying that said inspection time is reached, the With inspection result output means for outputting inspection results of inspection items to the outside ,
The inspection result storage means, when the inspection result corresponding to the inspection item is input from the outside to the control unit, the inspection result already stored as the inspection of the inspection item received by the control unit is performed. Is updated to the inspection result input to the control unit . The inspection time changing means is configured to update an inspection interval stored as information on the inspection time,
When notifying that the inspection time has arrived, the inspection time notification means displays the inspection time that has arrived on the screen of the display device, and displays the inspection item that has reached the inspection time after the inspection time is displayed. The working machine according to claim 1, wherein the working machine is displayed .   The work machine according to claim 1 or 2, wherein the inspection time changing means is configured to update information on the inspection time stored in the inspection time storage means in accordance with an instruction from the outside.   The inspection result storage unit is configured to store the inspection result based on an operation time and / or date, and the inspection time change unit changes the inspection time based on the operation time or date. The working machine according to any one of claims 1 to 3.