JP2013114580A - Construction machine and construction machine management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction machine which allows more detailed management of the construction machine on a work site.SOLUTION: A management device 150 loaded on a shovel 50 according to an embodiment of the present invention includes: a work position information acquisition unit 300 for acquiring work position information related to a work position on the work site of the shovel 50; an operation state information acquisition unit 301 for acquiring operation state information related to an operation state of the shovel 50; and an information recording unit 302 for recording the work position information and the operation state information or information generated from the operation state information in association.

Description

  The present invention relates to a construction machine and a construction machine management system, and more particularly to a construction machine that can acquire its own position information and a construction machine management system that manages a construction machine that can acquire its own position information.

  Conventionally, an operation management system for a hydraulic excavator is known (see, for example, Patent Document 1).

  In this operation management system, a hydraulic excavator records and collects operation data related to engine start / stop, pump hydraulic pressure, and other operating conditions and collects it into daily data. To the ground station. The ground station converts the received operation data into e-mail data and transmits it to the management unit through the Internet line.

  With this configuration, the operation management system collects operation data for each day while preventing battery consumption when the engine is stopped, and performs rough operation management of the hydraulic excavator based on the operation data.

JP 2001-236536 A

  However, the operation management system described in Patent Document 1 only collects rough operation data related to time gathered in units of one day such as engine operation time, turning operation time, travel time, and the like. More detailed operation management is not possible.

  In view of the above points, an object of the present invention is to provide a construction machine and a construction machine management system that enable more detailed management of the construction machine at a work site.

  In order to achieve the above object, a construction machine according to an embodiment of the present invention includes a work position information acquisition unit that acquires work position information related to a work position at a work site of the construction machine, and an operation related to an operation state of the construction machine. An operation state information acquisition unit that acquires state information, and an information recording unit that records the work position information and the operation state information or information generated from the operation state information in association with each other.

  A construction machine management system according to an embodiment of the present invention acquires a work position information acquisition unit that acquires work position information related to a work position at a work site of a construction machine, and acquires operation state information related to the operation state of the construction machine. An operation state information acquisition unit, an information recording unit that records the work position information in association with the operation state information or information generated from the operation state information, and an operation based on information recorded by the information recording unit And a work state display unit for displaying a work state of the construction machine regarding each work position on the site.

  With the above-described means, the present invention can provide a construction machine and a construction machine management system that enable more detailed management of the construction machine at a work site.

It is a schematic side view which shows the structural example of the shovel which concerns on the Example of this invention. It is the schematic which shows the structural example of the management system which concerns on the Example of this invention. It is a functional block diagram which shows the structural example of the management apparatus mounted in the shovel of FIG. It is a figure for demonstrating the difference in the resolution of the work position which a work position information acquisition part handles. It is FIG. (1) which shows the example of the screen showing the past work state of an excavator. It is FIG. (2) which shows the example of the screen showing the past work state of an excavator. It is a flowchart which shows the flow of a 1st information recording process. It is a flowchart which shows the flow of a 2nd information recording process. It is a flowchart which shows the flow of a 3rd information recording process. It is a flowchart which shows the flow of a 4th information recording process. It is a flowchart which shows the flow of an information transmission process. It is a flowchart which shows the flow of a work status display process.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic side view showing a configuration example of an excavator 50 to which the present invention is applied. The upper swing body 3 is mounted on the lower traveling body 1 of the excavator 50 via the swing mechanism 2. A boom 4 is attached to the upper swing body 3, an arm 5 is attached to the tip of the boom 4, and a bucket 6 is attached to the tip of the arm 5. The boom 4, the arm 5, and the bucket 6 constitute a digging attachment, and are hydraulically driven by the boom cylinder 7, the arm cylinder 8, and the bucket cylinder 9, respectively. Further, the upper swing body 3 is provided with a cabin 10 and is mounted with a power source such as an engine. Furthermore, the upper swing body 3 is equipped with an orientation information acquisition device 32 that acquires orientation information about the orientation of the excavator 50 and an operation state information acquisition device 34 that acquires operation state information about the operation state of the excavator 50. A control device 30, a storage device 35, and a display device 37 are mounted inside the cabin 10, and a main body position information acquisition device 31 and a communication device 36 are mounted on the ceiling of the cabin 10. The excavation attachment is equipped with a posture information acquisition device 33 that acquires posture information regarding the posture of the excavation attachment. Details of the control device 30, the main body position information acquisition device 31, the orientation information acquisition device 32, the posture information acquisition device 33, the operation state information acquisition device 34, the storage device 35, the communication device 36, and the display device 37 will be described later.

  FIG. 2 is a schematic diagram illustrating a configuration example of the management system 100 according to the embodiment of the present invention. The management system 100 mainly includes an excavator 50, a base station 21, a server 22, and a communication terminal 23. The communication terminal 23 includes a mobile communication terminal 23a, a fixed communication terminal 23b, and the like. The base station 21, the server 22, and the communication terminal 23 are connected to each other through a communication network 20 such as the Internet. In addition, each of the shovel 50, the base station 21, the server 22, and the communication terminal 23 may be one or plural.

  The base station 21 is a fixed facility that receives information transmitted by the excavator 50. For example, the base station 21 transmits and receives information to and from the excavator 50 through satellite communication, mobile phone communication, narrow area wireless communication, and the like.

  The server 22 is a device that stores and manages information transmitted by the excavator 50, and is, for example, a computer including a CPU, a ROM, a RAM, an input / output interface, and the like. Specifically, the server 22 acquires and stores information received by the base station 21 through the communication network 20 and manages the information so that an operator (administrator) can refer to the stored information as necessary.

  The communication terminal 23 is a device that refers to information stored in the server 22, and is, for example, a computer that includes a CPU, a ROM, a RAM, an input / output interface, an input device, a display, and the like. Specifically, the communication terminal 23 accesses the server 22 through the communication network 20 so that an operator (administrator) can browse information on the excavator 50.

  FIG. 3 is a schematic diagram illustrating a configuration example of the management device 150 mounted on the excavator 50 according to the embodiment of the present invention. The management device 150 mainly includes a control device 30, a body position information acquisition device 31, an orientation information acquisition device 32, an attitude information acquisition device 33, an operation state information acquisition device 34, a storage device 35, a communication device 36, and a display device 37. Consists of.

  The control device 30 is a device that controls the operation of the management device 150, and is, for example, a computer including a CPU, a RAM, a ROM, and the like. Specifically, the control device 30 executes programs corresponding to the functional elements of the work position information acquisition unit 300, the operation state information acquisition unit 301, the information recording unit 302, the work content estimation unit 303, and the work state display unit 304. The data is read from the ROM and loaded into the RAM, and the CPU executes processing corresponding to each functional element.

  The main body position information acquisition device 31 is a device that acquires main body position information related to the position of the construction machine main body. In the present embodiment, the main body position information acquisition device 31 receives a signal output from a GPS satellite via a GPS antenna by a GPS (Global Positioning System) receiver, and is main body position information (for example, latitude, longitude, and altitude). .) Is a GPS device for positioning and calculating. Specifically, the main body position information acquisition device 31 is a GPS device mounted on the ceiling portion of the excavator 50. For example, main body position information corresponding to the reference position (for example, the turning center) of the excavator 50 is obtained. The acquired body position information is output to the control device 30.

  The orientation information acquisition device 32 is a device that acquires orientation information related to the orientation of the construction machine. In the present embodiment, the orientation information acquisition device 32 is a geomagnetic sensor that acquires the orientation (azimuth) of the excavator 50 with the side where the excavation attachment is located as the front side, and outputs the detected orientation information to the control device 30.

  Further, the orientation information acquisition device 32 may be another GPS device mounted at a position on the excavator 50 different from the installation position of the GPS device as the main body position information acquisition device 31. This is because the orientation of the excavator 50 can be specified based on the position information acquired by each of the two GPS devices.

  The posture information acquisition device 33 is a device that acquires posture information related to the posture of the construction machine. The posture information acquisition device 33 is a sensor for acquiring posture information of the excavator attachment of the excavator 50, for example. In the present embodiment, the sensors for acquiring the posture information include a boom angle sensor 33a that detects the inclination of the boom 4 with respect to the upper swing body 3, an arm angle sensor 33b that detects the inclination of the arm 5 with respect to the boom 4, and the arm 5 includes a bucket angle sensor 33c for detecting the inclination of the bucket 6 with respect to 5. The posture information includes the position of the tip of the bucket 6, the turning radius of the excavation attachment, and the like. The posture information acquisition device 33 outputs the acquired posture information to the control device 30.

  The operation state information acquisition device 34 is a device that acquires operation state information.

  “Operating state information” is information relating to the operation of the construction machine. For example, information relating to the state of the hydraulic system of the construction machine, information relating to the state of the engine of the construction machine, information relating to the fuel consumption of the construction machine, and abnormality in the construction machine. Includes information about

  Information on the state of the hydraulic system includes, for example, the discharge pressure of a hydraulic pump (not shown), the discharge flow rate of the hydraulic pump, and between the hydraulic pump and hydraulic actuators such as the boom cylinder 7, arm cylinder 8, and bucket cylinder 9. Including a command (for example, lever operation amount) to a control valve (not shown) for controlling the flow of the hydraulic oil, hydraulic oil pressure in the hydraulic actuator, and the like.

  The information regarding the engine includes, for example, the temperature of the coolant of the radiator, the boost pressure of the supercharger attached to the engine, the output torque, the engine speed, and the like.

  The information on fuel consumption includes, for example, fuel injection amount, instantaneous fuel consumption, average fuel consumption, and the like.

  The information on the abnormality includes, for example, an abnormality in the electric system of the engine, an abnormality in charging the battery, an abnormality in the coolant, an abnormality in the pressure of the engine oil, an engine overheating, and the like.

  In the present embodiment, the operation state information acquisition device 34 includes a pressure sensor 34a for detecting the discharge pressure of the hydraulic pump, an engine speed sensor 34b for detecting the engine speed, and a fuel injection amount for detecting the fuel injection amount. A sensor 34c is included.

  The storage device 35 is a device for storing various information. The storage device 35 is, for example, a nonvolatile storage medium such as a flash memory, and is preferably removable through a dedicated insertion port in the cabin 10.

  The communication device 36 is a device that controls communication between the construction machine and the outside. The communication device 36 realizes transmission / reception of information between the excavator 50 and the remote server 22 through, for example, satellite communication. Specifically, the communication device 36 transmits information stored in the storage device 35 or secondary information generated based on the information to the server 22 through the base station 21. Further, the communication device 36 may realize the exchange of information between the excavator 50 and the base station 21 through a mobile phone network, a narrow area wireless communication network, or the like.

  The display device 37 is a device that displays various types of information. In the present embodiment, the display device 37 is a liquid crystal display installed in the cabin 10.

  Next, various functional elements in the control device 30 will be described.

  The work position information acquisition unit 300 is a functional element for acquiring work position information related to the work position at the work site of the construction machine. Specifically, the work position information acquisition unit 300 acquires the work position information of the excavator 50 based on the output of the GPS device 31. Further, the work position information acquisition unit 300 may acquire work position information of the excavator 50 based on the outputs of the GPS device 31 and the geomagnetic sensor 32, and the GPS device 31, the geomagnetic sensor 32, and the angle sensors 33a to 33c. The work position information of the excavator 50 may be acquired based on the output. The work position information acquisition unit 300 may store the acquired work position information in a volatile storage medium such as a RAM.

  FIG. 4 is a diagram for explaining a difference in resolution of work positions handled by the work position information acquisition unit 300. In FIG. 4, a broken-line circle R <b> 1 is a circle around the turning axis of the turning mechanism 2 of the excavator 50, and indicates a workable range of the excavator 50 in a state where the lower traveling body 1 is stopped. The broken-line circle R1 corresponds to the unit area of the work position that can be identified by the work position information acquisition unit 300 based on the output of the GPS device 31. The unit area of the work position means that the work position is grasped as an individual work position for each unit area. A one-dot chain line circle R2 indicates a workable range of the excavator 50 in the extending direction of the excavation attachment. The one-dot chain line circle R2 corresponds to the unit area of the work position that can be identified by the work position information acquisition unit 300 based on the outputs of the GPS device 31 and the geomagnetic sensor 32. A solid line circle R <b> 3 indicates a workable range of the excavator 50 below the bucket 6. The solid line circle R3 corresponds to the unit area of the work position that can be identified by the work position information acquisition unit 300 based on the outputs of the GPS device 31, the geomagnetic sensor 32, and the angle sensors 33a to 33c.

  As described above, the unit area of the work position changes depending on which device or sensor the work position information acquisition unit 300 has acquired the work position information. Specifically, the work position information acquisition unit 300 is based on the output of the GPS device 31 and the output of the geomagnetic sensor 32 as compared with the case of acquiring the work position information based only on the output of the GPS device 31. In addition, when acquiring work position information based on the outputs of the GPS device 31, the geomagnetic sensor 32, and the angle sensors 33a to 33c, the unit area of the work position can be reduced, and the work in the management device 150 can be performed. The position resolution can be increased. Therefore, the configuration including the GPS device 31, the geomagnetic sensor 32, and the angle sensors 33 a to 33 c has a wide range around the turning axis as a work target using the turning mechanism 2 and the excavation attachment while the lower traveling body 1 is stopped. It is useful for the shovel 50 that can.

  The operation state information acquisition unit 301 is a functional element that acquires operation state information related to the operation state of the construction machine, and acquires operation state information related to the operation state of the excavator 50 based on the output of the operation state information acquisition device 34.

  The information recording unit 302 is a functional element that records work position information and operation state information or information generated from the operation state information in association with each other. Specifically, the information recording unit 302, while the excavator 50 is in operation, includes the work position information of the excavator 50 at the present time and one or more primary outputs from the one or more operation state information acquisition devices 34 at the present time. The recording target information is generated in association with the information (instantaneous value). Then, the information recording unit 302 records the recording target information in the storage device 35. The information recording unit 302 may add date and time information to the recording target information.

  The information generated from the operation state information is secondary information generated from the primary information (instantaneous value) output from the operation state information acquisition device 34. For example, a plurality of pieces of primary information (instantaneous values) ) Based statistical values (for example, average value, maximum value, minimum value, intermediate value, etc.). Specifically, the information generated from the operation state information includes, for example, a statistical value of the engine speed, a statistical value of the discharge pressure, a statistical value of the fuel injection amount, and the like in a predetermined period. In this case, the instantaneous value of the operation state information at each moment is stored in a volatile storage medium such as a RAM until recording in the storage device 35 is performed.

  The information recording unit 302 transmits the recording target information to the server 22 through the communication device 36 in addition to or instead of recording in the storage device 35, and a storage device (not shown) of the server 22. The recording target information may be recorded in In this case, the information recording unit 302 may transmit the recording target information to the server 22 every time the recording target information is generated. It may be transmitted to the server 22. The information recording unit 302 may erase the corresponding recording target information recorded in the storage device 35 after the recording target information is recorded in the storage device of the server 22.

  The work content estimation unit 303 is a functional element that estimates the work content of the construction machine. For example, the work content estimation unit 303 estimates the work content of the excavator 50 based on the operation state information acquired by the operation state information acquisition unit 301.

  The “work content” is the work content of the construction machine. For example, the current work mode such as excavation, earth removal, or traveling, the weight of excavated earth and sand, the excavation depth, or the large engine load. Etc.

  For example, when it is determined that the discharge pressure of the hydraulic pump is equal to or higher than a predetermined value during operation of the bucket 6, the work content estimation unit 303 estimates that the current work content of the excavator 50 is being excavated.

  The estimation information estimated by the work content estimation unit 303 is included in secondary information generated from the operation state information. Therefore, the information recording unit 302 may generate the recording target information by associating the work position information and the estimation information, instead of generating the recording target information by associating the work position information and the operation state information. Note that the information recording unit 302 may generate the recording target information by associating the work position information, the operation state information, and the estimation information.

  The work state display unit 304 is a functional element that displays the work state of the construction machine regarding each work position at the work site based on information recorded by the information recording unit 302. Specifically, the work status display unit 304 displays the past work status of the excavator 50 on the display device 37 using, for example, the recording target information stored in the storage device 35.

  5 and 6 show examples of screens representing past work states of the excavator 50, respectively. Screen D1 in FIG. 5 shows the cumulative amount of fuel consumed at each work position at the work site. A screen D2 in FIG. 6 shows a travel locus of the excavator 50 at the work site. Each of the screen D1 in FIG. 5 and the screen D2 in FIG. 6 includes map areas D11 and D21 indicating a map of the work site, and legend areas D12 and D22 that explain the meaning of the image expression used in the map area D11. The

  In the map area D11 of FIG. 5, rectangles represented by five types of hatching represent unit areas of work positions (for example, 1 square meter). In this embodiment, the higher the hatching concentration, the greater the fuel consumption. By looking at this screen D1, the operator (manager) can grasp how the fuel is consumed at which work position in the work site.

  The work state display unit 304 accumulates the weight of excavated earth and sand, the number of excavations, the number of turns, the turning angle, the boom operation amount, the arm operation amount, the bucket operation amount, etc. for each work position instead of the fuel consumption. May be displayed.

  In the map area D <b> 21 of FIG. 6, dotted lines represented by three types of thickness represent the movement trajectory of the excavator 50. In the present embodiment, the thicker the dotted line, the longer the elapsed time from the start of work. By looking at this screen D2, the operator (administrator) can grasp how the excavator 50 has moved at the work site.

  Further, the work state display unit 304 is displayed on the movement trajectory when the operator moves the pointer D23 on the screen D2 using the input device (not shown) such as a mouse so as to match one point of the movement trajectory. The time corresponding to the point may be displayed in a pop-up.

  Further, the work state display unit 304 may superimpose a distribution diagram as shown in FIG. 5 and a locus diagram as shown in FIG.

  Next, an example of processing in which the management apparatus 150 records recording target information (hereinafter referred to as “first information recording processing”) will be described with reference to FIG. FIG. 7 is a flowchart showing the flow of the first information recording process, and the management apparatus 150 repeatedly executes the first information recording process at a predetermined cycle.

  First, the control device 30 of the management device 150 acquires work position information related to the work position of the excavator 50 by the work position information acquisition unit 300 (step S1).

  Then, the control apparatus 30 acquires the operation state information regarding the operation state of the shovel 50 by the operation state information acquisition unit 301 (step S2).

  Thereafter, the control device 30 causes the information recording unit 302 to generate recording target information by associating the work position information acquired in step S1 with the operation state information acquired in step S2, and stores the recording target information in the storage device 35. (Step S3). The control device 30 may add date and time information when recording the recording target information in the storage device 35. Further, the control device 30 may transmit the recording target information to the server 22 through the communication device 36 and record the recording target information in the storage device of the server 22.

  In the present embodiment, the control device 30 generates one piece of recording target information by associating the most recently acquired work position information with the most recently acquired operation state information, and stores the one piece of recording target information in the storage device 35. Record. However, the present invention is not limited to this. The control device 30 generates, for example, a plurality of pieces of recording target information by associating each of a plurality of pieces of work position information stored in the RAM at a plurality of times in the past with each of a plurality of corresponding operation state information, The plurality of pieces of recording target information may be recorded together in the storage device 35. Alternatively, the control device 30 associates the work position information stored in the RAM at one past time point with secondary information generated from a plurality of operation state information stored in the RAM at a plurality of past time points. May be recorded in the storage device 35. Note that the operation state information acquired at one time point may be a plurality of types of information.

  Next, another example (hereinafter referred to as “second information recording process”) in which the management apparatus 150 records the recording target information will be described with reference to FIG. FIG. 8 is a flowchart showing the flow of the second information recording process, and the management apparatus 150 repeatedly executes the second information recording process at a predetermined cycle.

  First, the control device 30 of the management device 150 acquires work position information regarding the work position of the excavator 50 by the work position information acquisition unit 300 (step S11).

  Then, the control apparatus 30 acquires the operation state information regarding the operation state of the shovel 50 by the operation state information acquisition unit 301 (step S12).

  Thereafter, the control device 30 estimates the work content of the excavator 50 based on the operation state information acquired in step S12 by the work content estimation unit 303 (step S13).

  Thereafter, the control device 30 uses the information recording unit 302 to generate the recording target information by associating the work position information acquired in step S11 with the work content estimated in step S13, and stores the recording target information in the storage device 35. Recording is performed (step S14). The control device 30 may add date and time information when recording the recording target information in the storage device 35. Further, the control device 30 may transmit the recording target information to the server 22 through the communication device 36 and record the recording target information in the storage device of the server 22.

  In the present embodiment, the control device 30 generates one piece of recording target information by associating the recently acquired work position information with the most recently estimated work content, and records the one piece of recording target information in the storage device 35. To do. However, the present invention is not limited to this. For example, the control device 30 generates a plurality of pieces of recording target information by associating each of a plurality of pieces of work position information stored in the RAM at a plurality of times in the past with each of a plurality of corresponding estimated work contents, The plurality of pieces of recording target information may be recorded together in the storage device 35. Alternatively, the control device 30 associates the work position information stored in the RAM at one past time point with secondary information generated from a plurality of estimated work contents stored in the RAM at a plurality of past time points. May be recorded in the storage device 35.

  Next, still another example (hereinafter referred to as “third information recording process”) in which the management apparatus 150 records the recording target information will be described with reference to FIG. FIG. 9 is a flowchart showing the flow of the third information recording process, and the management apparatus 150 performs the first information recording process and the second information in addition to the first information recording process or the second information recording process. Instead of the recording process, the third information recording process is repeatedly executed at a predetermined cycle. Although not shown in FIG. 9, the management device 150 repeatedly acquires work position information and operation state information at a predetermined cycle.

  Based on the work position information of the excavator 50 acquired by the work position information acquisition unit 300, the control device 30 determines whether or not the work position has changed by a predetermined distance from the work position when the previous recording target information was recorded. Is determined (step S21). The predetermined distance is determined according to, for example, the resolution of the work position handled by the work position information acquisition unit 300. If the unit area of the work position is 1 meter square, the predetermined distance is set to 1 meter.

  If it is determined that the work position has not changed by a predetermined distance or more (NO in step S21), the control device 30 ends the current third information recording process without recording the recording target information.

  On the other hand, if it is determined that the work position has changed by a predetermined distance or more (YES in step S21), the control device 30 uses the information recording unit 302 to associate the work position information with the operation state information and generate recording target information. The recording target information is recorded in the storage device 35 (step S22). The control device 30 may add date and time information when recording the recording target information in the storage device 35.

  In the present embodiment, the control device 30 performs the secondary operation based on a plurality of operation state information stored in the RAM during the period when the excavator 50 was located at the previous work position before the work position changed by a predetermined distance or more. Information (for example, an average value of each operation state information) is generated. Then, the control device 30 generates recording target information by associating the secondary information with the work position information of the previous work position, and records the recording target information in the storage device 35. Note that the control device 30 may transmit the recording target information to the server 22 through the communication device 36 and record the recording target information in the storage device of the server 22.

  In the present embodiment, the control device 30 also obtains secondary information based on a plurality of operation state information stored in the RAM during the period when the excavator 50 was located at the current work position when the ignition was turned off. Generate. Then, the control device 30 associates the secondary information with the work position information of the current work position, generates recording target information, and records the recording target information in the storage device 35. This is to ensure that information on the work position at the time of ignition off can be reliably recorded even when the operation of the excavator 50 is stopped without changing the work position by a predetermined distance or more. Also in this case, the control device 30 may transmit the recording target information to the server 22 through the communication device 36 and record the recording target information in the storage device of the server 22.

  In the present embodiment, the control device 30 records the recording target information in the storage device 35 when the work position changes by a predetermined distance or more. However, the present invention is not limited to this. For example, when the discharge pressure of the hydraulic pump exceeds a predetermined value, when the engine load exceeds a predetermined value, or when excavation by excavation attachment is performed, the control device 30 increases the weight of the excavated earth and sand above the predetermined value. The recording target information may be recorded in the storage device 35 or the recording target information may be transmitted to the server 22 when a predetermined condition is satisfied.

  Next, still another example (hereinafter referred to as “fourth information recording process”) in which the management apparatus 150 records the recording target information will be described with reference to FIG. FIG. 10 is a flowchart showing the flow of the fourth information recording process. In addition to at least one of the other information recording processes described above, the management apparatus 150 performs this fourth information recording process at a predetermined cycle. Repeatedly. In addition, although illustration is abbreviate | omitted in FIG. 10, the management apparatus 150 acquires work position information and operation state information repeatedly with a predetermined period.

  The control device 30 determines whether or not an abnormality has occurred in the shovel 50 based on the operation state information of the shovel 50 acquired by the operation state information acquisition unit 301 (step S31). Specifically, the control device 30 determines whether or not an abnormality in the electrical system of the engine, an abnormality in charging the battery, an abnormality in the coolant, an abnormality in the engine oil pressure, an engine overheating, or the like has occurred.

  When it is determined that no abnormality has occurred in the shovel 50 (NO in step S31), the control device 30 ends the fourth information recording process this time without executing recording of the recording target information.

  On the other hand, if it is determined that an abnormality has occurred in the excavator 50 (YES in step S31), the control device 30 causes the information recording unit 302 to associate the work position information with the operation state information to generate recording target information, and Recording target information is recorded in the storage device 35 (step S32). The control device 30 may add date and time information when recording the recording target information in the storage device 35.

  In the present embodiment, the control device 30 generates one piece of recording target information by associating the most recently acquired work position information with the most recently acquired operation state information, and stores the one piece of recording target information in the storage device 35. Record. However, the present invention is not limited to this. For example, the control device 30 includes, for example, a plurality of work position information stored in the RAM at a plurality of time points in a predetermined period of at least one of before and after the occurrence of an abnormality, and a plurality of corresponding operation states. A plurality of pieces of recording target information may be generated and recorded in association with each piece of information. Alternatively, the control device 30 associates the work position information acquired most recently with secondary information generated from a plurality of operation state information stored in the RAM at a plurality of times before and after the occurrence of the abnormality, and stores the storage device 35. May be recorded. Even in these cases, the control device 30 may transmit the recording target information to the server 22 through the communication device 36 and record the recording target information in the storage device of the server 22.

  Next, a process in which the management apparatus 150 transmits the recording target information recorded in the storage device 35 to the server 22 (hereinafter referred to as “information transmission process”) will be described with reference to FIG. FIG. 11 is a flowchart showing the flow of the information transmission process, and the management apparatus 150 repeatedly executes this information transmission process at a predetermined cycle.

  The control device 30 of the management device 150 determines whether or not a predetermined time has come based on the output of the built-in timer (step S41).

  If it is determined that the predetermined time has not been reached (NO in step S41), the control device 30 ends the current information transmission process without transmitting the recording target information.

  On the other hand, when it is determined that the predetermined time has come (YES in step S41), the control device 30 transmits the recording target information recorded in the storage device 35 to the server 22 (step S42).

  Thereafter, the control device 30 deletes the recording target information whose transmission has been completed from the storage device 35 (step S43). This is because the free space of the storage device 35 is ensured so that future recording target information can be reliably recorded. Note that the control device 30 may hold the recording target information that has been transmitted without being deleted from the storage device 35.

  As described above, in this embodiment, the management device 150 uses the communication device 20 such as the Internet to record the recording target information recorded in the storage device 35 using communication means such as satellite communication, mobile phone communication, and narrowband wireless communication. To the server 22. However, the present invention is not limited to this. For example, the management device 150 may directly transmit the recording target information recorded in the storage device 35 through narrow-area wireless communication to a communication terminal such as a notebook computer, a mobile phone, or a smartphone without using the server 22. Good. In addition, the management device 150 uses the portable recording medium to record the recording target information recorded in the storage device 35 when a portable recording medium such as a memory stick or an SD card is inserted into a predetermined slot in the cabin 10. You may copy it. This is because the recording target information recorded in the storage device 35 can be used by an external device.

  Next, a process of displaying the work status of the excavator 50 on the communication terminals 23 such as the mobile communication terminal 23a and the fixed communication terminal 23b (hereinafter referred to as “work status display process”) will be described with reference to FIG. . FIG. 12 is a flowchart showing the flow of the work state display process, and the work state display process will be described with the mobile communication terminal 23a as a representative. As shown in FIG. 2, the mobile communication terminal 23 a and the fixed communication terminal 23 b include work state display units 230 a and 230 b similar to the work state display unit 304 that is a functional element in the control device 30 of the management device 150. Shall. The work status display units 230a and 230b may be mounted on the server 22.

  The work state display unit 230a of the mobile communication terminal 23a accesses the server 22 through the communication network 20 in response to an operator input via an input device (not shown) of the mobile communication terminal 23a.

  Thereafter, the work state display unit 230a reads the recording target information related to the specific excavator 50 from the storage device of the server 22 in accordance with the input of the operator (step S51).

  Thereafter, the work state display unit 230a displays a screen representing the work state of the excavator 50 as shown in FIGS. 5 and 6 based on the read recording target information (not shown) of the mobile communication terminal 23a. (Step S52).

  With the above configuration, the excavator 50 equipped with the management device 150 records the work position information and the operation state information or the secondary information in association with each other so that the operator (administrator) can browse the information later. To. As a result, the excavator 50 equipped with the management device 150 can provide the operator (manager) with information useful for construction management, and can improve the precision and efficiency of construction management.

  The excavator 50 records information on the state of the hydraulic system such as the discharge pressure of the hydraulic pump, information on the state of the engine such as the engine load, or information on the fuel consumption such as the fuel consumption in association with the work position information. As a result, the operator (administrator) can grasp in detail at which position on the work site and what workload the excavator 50 has worked. And the operator (administrator) can increase the number of excavators working at places with high work load at the work site, reduce the number of excavators working at places with low work load at the work site, or place with poor fuel efficiency. It is possible to make a decision such as changing the working method at the site, and to improve the accuracy and efficiency of construction management.

  The excavator 50 can estimate the weight of excavated earth and sand for each work position on the work site based on the discharge pressure of the hydraulic pump. As a result, the operator (administrator) can grasp how much work is progressing at which position in the work site, and can improve the accuracy and efficiency of construction management.

  The excavator 50 records work position information and operation state information in association with each other when an abnormality occurs in the excavator 50. As a result, the operator (administrator) can specify the position of the excavator 50 at the work site when an abnormality occurs in the excavator 50, and grasps the work environment such as the excavation object and the road surface at that time. can do. Further, the operator (administrator) can browse the operation state information before and after the occurrence of the abnormality. Then, the operator (administrator) can analyze the cause of the occurrence of abnormality in more detail, and can improve the maintenance efficiency of the shovel 50.

  The excavator 50 records work position information and operation state information in association with each other when the operation state of the excavator 50 satisfies a predetermined condition. As a result, the excavator 50 can provide the operator (manager) with information useful for construction management while efficiently obtaining necessary information, and can improve the precision and efficiency of construction management. . For example, the excavator 50 can record the work position information and the operation state information in association with each other when the discharge pressure of the hydraulic pump or the engine load exceeds a predetermined value. As a result, the operator (administrator) can grasp the place where the work is actually performed at the work site and the frequency thereof, and can improve the accuracy and efficiency of construction management. Alternatively, the excavator 50 can record the work position information and the operation state information in association with each other when it is estimated that excavation has been performed. As a result, the operator (administrator) can grasp the location where the excavation was actually performed at the work site and the frequency thereof, and can improve the accuracy and efficiency of construction management.

  The excavator 50 records work position information and operation state information in association with each other at regular time intervals. As a result, the operator (manager) can grasp the working state of the excavator 50 that changes with the passage of time, and the accuracy and efficiency of construction management can be improved.

  The excavator 50 records the work position information and the operation state information in association with each other when the excavator 50 moves a predetermined distance. As a result, the operator (manager) can grasp the work state of the excavator 50 for each work position in the work site, and can improve the accuracy and efficiency of construction management. Moreover, the operator (administrator) can grasp the movement route of the excavator 50, and can improve the accuracy and efficiency of construction management.

  The excavator 50 adds date and time information when recording the work position information and the operation state information in association with each other. Thereby, the operator (administrator) can grasp the date and time of the excavator 50 in the work site, and can improve the accuracy and efficiency of construction management.

  Further, the management system 100 including the excavator 50 enables an administrator at a location away from the excavator 50 to view information on the work position of the excavator 50 at the work site, in addition to the above-described effects of the excavator 50. As a result, the management system 100 can provide the manager with information useful for construction management, and can improve the accuracy and efficiency of construction management.

  The management system 100 also superimposes and displays image information based on the operation state information on the map image of the work site. As a result, the management system 100 can present the work state of the excavator 50 to the administrator in an easy-to-understand manner, and can improve the accuracy and efficiency of construction management.

  Although the preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can be added.

  For example, in the above-described embodiment, the case where the present invention is applied to the excavator 50 will be described, but the present invention is not limited to this. The present invention is also applicable to other construction machines including, for example, a lifting magnet, a grapple, a crusher, and the like.

  DESCRIPTION OF SYMBOLS 1 ... Lower traveling body 2 ... Turning mechanism 3 ... Upper turning body 4 ... Boom 5 ... Arm 6 ... Bucket 7 ... Boom cylinder 8 ... Arm cylinder 9 ... Bucket cylinder 10 ... cabin 20 ... network 21 ... base station 22 ... server 23 ... communication terminal 23a ... mobile communication terminal 23b ... fixed communication terminal 230a, 230b ... Work state display unit 30 ... control device 31 ... main body position information acquisition device 32 ... orientation information acquisition device 33 ... posture information acquisition device 33a ... boom angle sensor 33b ... arm angle sensor 33c ... Bucket angle sensor 34 ... Operating state information acquisition device 34a ... Pressure sensor 34b ... Engine speed sensor 34c ... Fuel injection Sensor 35 ... Storage device 36 ... Communication device 37 ... Display device 50 ... Excavator 100 ... Management system 150 ... Management device 300 ... Work position information acquisition unit 301 ... Operation State information acquisition unit 302 ... Information recording unit 303 ... Work content estimation unit 304 ... Work state display unit

Claims (12)

A work position information acquisition unit for acquiring work position information related to the work position at the work site of the construction machine;
An operation state information acquisition unit for acquiring operation state information related to the operation state of the construction machine;
An information recording unit for recording the work position information in association with the operation state information or information generated from the operation state information;
A construction machine comprising: The operation state information includes at least one of information on a state of a hydraulic system of the construction machine, information on an engine state of the construction machine, information on fuel consumption of the construction machine, and information on abnormality of the construction machine. Including,
The construction machine according to claim 1. A work content estimation unit that estimates the work content of the construction machine based on the operation state information;
The information recording unit records the work content estimated by the work content estimation unit and the work position information in association with each other.
The construction machine according to claim 1 or 2, characterized in that. The information recording unit executes recording at predetermined time intervals.
The construction machine according to any one of claims 1 to 3, wherein The information recording unit performs recording when an operation state of the construction machine satisfies a predetermined condition.
The construction machine according to any one of claims 1 to 3, wherein The information recording unit performs recording when the work position of the construction machine changes by a predetermined distance or more.
The construction machine according to any one of claims 1 to 3, wherein The information recording unit performs recording when an abnormality occurs in the construction machine,
The construction machine according to any one of claims 1 to 3, wherein The information recording unit adds date and time information and executes recording.
A construction machine according to any one of claims 1 to 7. A main body position information acquisition device that acquires main body position information related to the main body position of the construction machine, and a direction information acquisition device that acquires direction information related to the direction of the construction machine,
The work position information acquisition unit acquires the work position information based on the main body position information and the orientation information.
The construction machine according to any one of claims 1 to 8, wherein A posture information acquisition device for acquiring posture information related to the posture of the construction machine;
The work position information acquisition unit acquires the work position information based on the main body position information, the orientation information, and the posture information.
The construction machine according to claim 9. A communication device that transmits information recorded by the information recording unit to the outside;
The construction machine according to any one of claims 1 to 10, wherein: A work position information acquisition unit for acquiring work position information related to the work position at the work site of the construction machine;
An operation state information acquisition unit for acquiring operation state information related to the operation state of the construction machine;
An information recording unit for recording the work position information in association with the operation state information or information generated from the operation state information;
Based on information recorded by the information recording unit, a work state display unit that displays a work state of the construction machine regarding each work position at a work site;
A construction machine management system comprising: