A diagnosis support system for a work machine, a failure diagnosis system for a work machine, a diagnosis support method for a work machine, and a failure diagnosis method for a work machine

Abstract

The controller (10) determines a diagnosis site of the motor grader (100) for which a failure diagnosis should be performed, based on the candidate information of the abnormality candidate in the motor grader (100), determines a first sensor connection position of a diagnosis sensor that diagnoses the diagnosis site, and controls the display device (33) to display position information of the first sensor connection position.

Description

Technical Field

[0001] This disclosure relates to a diagnostic support system for operating machinery, a fault diagnosis system for operating machinery, a diagnostic support method for operating machinery, and a fault diagnosis method for operating machinery. Background Technology

[0002] For example, Japanese Patent Application Publication No. 2006-350499 (Patent Document 1) discloses a maintenance and management device for a work machine. Patent Document 1 discloses that it stores image data showing the arrangement of the components of the work machine, and creates and displays an image that identifies the part in the image data corresponding to maintenance information.

[0003] Prior art literature

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication No. 2006-350499 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] Until now, when anomalies were detected in the motion characteristics of operating machinery, service personnel had to travel to the site to measure the motion characteristics. However, in recent years, due to advancements in communication technology, it has become possible to receive and transmit very large volumes of data. This allows information related to various motion characteristics of operating machinery to be obtained from remote locations.

[0008] However, in cases such as transmissions, there are multiple points where it is desirable to measure hydraulic pressure as a characteristic of operation. Therefore, installing diagnostic sensors at all points where hydraulic pressure needs to be measured to determine a fault leads to an increase in the number of components. Especially in small to medium-sized mass-produced models, installing multiple diagnostic sensors, each with communication capabilities, is costly.

[0009] The purpose of this disclosure is to provide a diagnostic support system for operating machinery, a fault diagnosis system for operating machinery, a diagnostic support method for operating machinery, and a fault diagnosis method for operating machinery that can easily and accurately determine faults with a small number of parts.

[0010] Methods for solving problems

[0011] The diagnostic support system for operating machinery disclosed herein includes a display device and a controller. The controller determines the diagnostic location in the operating machinery based on candidate information of abnormalities in the operating machinery, determines the connection position of the first sensor of the diagnostic sensor used to diagnose the diagnostic location, and controls the display device to display the position information of the first sensor connection position.

[0012] The fault diagnosis system for the operating machinery disclosed herein includes the aforementioned diagnostic support system for the operating machinery, and a diagnostic sensor connected to the connection point of the first sensor. The controller analyzes the operating characteristics of the operating machinery based on the detection signals from the diagnostic sensor.

[0013] The diagnostic support method for operating machinery disclosed herein is a diagnostic support method for operating machinery with a display device, comprising the following steps.

[0014] Based on the candidate information of abnormalities in the operating machinery, the diagnostic location in the operating machinery is determined. The connection position of the first sensor for diagnosing the diagnostic location is determined. The control display device displays the location information of the first sensor connection position.

[0015] The fault diagnosis method for operating machinery disclosed herein includes the following steps: following the above-described diagnostic support method for operating machinery, the operating characteristics of the operating machinery are analyzed based on the detection signal from a diagnostic sensor connected to the connection position of the first sensor.

[0016] Invention Effects

[0017] According to this disclosure, a diagnostic support system for work machinery, a fault diagnosis system for work machinery, a diagnostic support method for work machinery, and a fault diagnosis method for work machinery can be realized, which can easily and accurately determine faults with a small number of parts. Attached Figure Description

[0018] Figure 1 This is a perspective view that schematically illustrates the structure of the working machinery in one embodiment of the present disclosure.

[0019] Figure 2 It is shown Figure 1 The side view of the structure of the machine shown.

[0020] Figure 3 This is a diagram illustrating an example of the sensor connection location of a diagnostic sensor in the fault diagnosis of this disclosure, and it shows... Figure 2 The diagram shows the hydraulic circuit of the power transmission device.

[0021] Figure 4 It is a diagram showing the sensor connection locations of the diagnostic sensors used in the fault diagnosis of this disclosure, and a top view showing the structure of the transmission and torque converter.

[0022] Figure 5 It is shown Figure 1 The diagram shows an example of the structure of a fault diagnosis system for the operating machinery.

[0023] Figure 6 It is shown Figure 1The diagram shows an example of a diagnostic support system and a fault diagnosis system for the operating machinery.

[0024] Figure 7 This is a flowchart illustrating an example of a diagnostic support method for operating machinery according to one embodiment of the present disclosure.

[0025] Figure 8 It shows in detail Figure 7 The flowchart shows the process of adding a sensor for judgment.

[0026] Figure 9 This is a flowchart illustrating the fault diagnosis process after connecting diagnostic sensors. Detailed Implementation

[0027] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0028] In the specification and accompanying drawings, the same reference numerals are used to denote the same constituent elements or corresponding constituent elements, and redundant descriptions are omitted. Additionally, in the accompanying drawings, structures are sometimes omitted or simplified for ease of explanation.

[0029] This disclosure, in addition to motorized graders, can also be applied to hydraulic excavators, wheel loaders, bulldozers, forklifts, and other operating machinery. In the following description, "up," "down," "front," "rear," "left," and "right" refer to the position of the machine being seated... Figure 1 The direction is based on the user of the driver's seat 11S in the cab 11 shown.

[0030] <Structure of Operating Machinery>

[0031] First, use Figure 1 as well as Figure 2 The structure of a motorized grader, which is an example of the working machinery in this embodiment, will be described.

[0032] Figure 1 as well as Figure 2 These are, respectively, a perspective view and a side view illustrating the structure of the working machinery according to one embodiment of this disclosure. For example... Figure 1 As shown, the motorized grader 100 is a work machine that can perform land leveling or snow removal operations while driving.

[0033] The motorized grader 100 has a front frame 14, a rear frame 15, a pair of articulated cylinders 28, a cab 11, an engine hood 13, front wheels 16 and rear wheels 1, and a working device 12.

[0034] The front frame 14 and the rear frame 15 constitute the body frame 18 of the motorized grader 100. The front frame 14 is positioned in front of the rear frame 15.

[0035] The front frame 14 is rotatably connected to the rear frame 15 via a central pin (not shown) located on an axis 121 at the center of rotation. The axis 121 at the center of rotation is an axis extending in the vertical direction.

[0036] A pair of articulated cylinders 28 are disposed on the left and right sides, separated by the front frame 14. The articulated cylinders 28 are hydraulic cylinders that are driven by hydraulic pressure to extend and retract. Driven by the extension and retraction of the articulated cylinders 28, the front frame 14 rotates relative to the rear frame 15 about the axis 121 of the rotation center.

[0037] The front wheel 16 and the rear wheel 17 are driving wheels. The front wheel 16 is rotatably mounted to the front frame 14. The front wheel 16 is also a steering wheel and is mounted to the front frame 14 in a steering manner. The rear wheel 17 is rotatably mounted to the rear frame 15. Driving force from the engine is transmitted to the rear wheel 17.

[0038] The working device 12 is positioned between the front wheel 16 and the rear wheel 17 in the longitudinal direction. The working device 12 is supported by a front frame 14. The working device 12 includes a bulldozer blade 21, a drawbar 22, a rotary table 23, and a pair of lifting cylinders 25.

[0039] A tow bar 22 is located below the front frame 14. The front end of the tow bar 22 is connected to the front end of the front frame 14 in a swingable manner. A pair of lifting cylinders 25 are located on the left and right sides of the front frame 14. The rear end of the tow bar 22 is supported by the front frame 14 via the pair of lifting cylinders 25.

[0040] By extending and retracting a pair of lifting cylinders 25, the rear end of the drawbar 22 can move up and down relative to the front frame 14. By retracting the pair of lifting cylinders 25 together, the height of the bulldozer blade 21 relative to the front frame 14 and the front wheel 16 is adjusted upward. By extending the pair of lifting cylinders 25 together, the height of the bulldozer blade 21 relative to the front frame 14 and the front wheel 16 is adjusted downward.

[0041] The traction rod 22 can swing up and down about an axis along the front-rear direction by means of the different extension and retraction of a pair of lifting cylinders 25.

[0042] A rotary table 23 is positioned below the traction rod 22. The rotary table 23 is connected to the traction rod 22 in a rotatable manner. The rotary table 23 can rotate clockwise and counterclockwise about an axis along the vertical direction.

[0043] The bulldozer blade 21 is positioned below the rotary table 23. The bulldozer blade 21 is flush with the ground surface. The bulldozer blade 21 is supported by the rotary table 23. The bulldozer blade 21 rotates in tandem with the rotary table 23, changing the angle (bullet advance angle) of the bulldozer blade 21 relative to the forward and backward directions as viewed from above. The axis of rotation of the bulldozer blade 21 is an axis extending along the vertical direction.

[0044] like Figure 2 As shown, the driver's cab 11 is mounted on the rear frame 15, for example. The driver's cab 11 forms an interior space for a user to ride in. In addition to the driver's seat 11S, the driver's cab 11 is equipped with an input device 32, a display device 33, multiple control levers, etc. It should be noted that the driver's cab 11 can also be mounted on the front frame 14.

[0045] The input device 32 is configured to perform various input operations by the user, such as in fault diagnosis. The input device 32 may be, for example, a switch, button, dial, lever, joystick, etc., or it may be a device capable of inputting time.

[0046] The display device 33 has a display section, which displays, for example, fault diagnosis operation steps. The display section may be, for example, a touch panel. In this case, by operating the touch panel with the user's touch, various input operations during fault diagnosis can be performed regardless of the operation of the input device 32. In this case, the display device 33 can function as an input device 32.

[0047] The engine hood 13 covers the engine compartment and is supported by the rear frame 15. The engine compartment houses the transmission 13a, torque converter 13b, engine 13c, exhaust system (not shown), etc. The transmission 13a and torque converter 13b constitute a power transmission device, transmitting power from the engine 13c to the rear wheels 17.

[0048] The transmission 13a internally includes a hydraulic clutch and transmission gears. The transmission 13a converts the rotational speed and torque of the input shaft connected to the output side of the torque converter 13b. The converted rotational speed and torque are then transmitted from the output shaft of the transmission 13a to the rear wheels 17 via a final drive and a series connection.

[0049] <An example of the sensor connection location for diagnostic sensors in fault diagnosis>

[0050] Next, use Figure 3 as well as Figure 4 right Figure 1 as well as Figure 2 An example of the sensor connection position of the diagnostic sensor in the fault diagnosis of the motorized grader 100 shown will be explained.

[0051] Figure 3 This is a diagram illustrating an example of the sensor connection location of a diagnostic sensor in the fault diagnosis of this disclosure, and it shows... Figure 2 The diagram shows the hydraulic circuit of the power transmission device. Figure 4 It is a diagram showing the sensor connection locations of the diagnostic sensors used in the fault diagnosis of this disclosure, and a top view showing the structure of the transmission and torque converter.

[0052] like Figure 3 As shown, the hydraulic circuit of the power transmission device includes a transmission 13a, a torque converter 13b, and a connecting force control mechanism 45.

[0053] The pipeline connected to the hydraulic pump 51 has a branch line 52a and a branch line 52b that branch off from each other. A hydraulic machine for locking the torque converter 13b is connected in the branch line 52a.

[0054] The locking mechanism uses a hydraulic machine and includes a lock-up valve 53, a lock-up solenoid valve 54, and a lock-up clutch mechanism 55. The lock-up solenoid valve 54 supplies pilot pressure to the lock-up valve 53. The lock-up clutch mechanism 55 is connected between the lock-up valve 53 and the torque converter 13b.

[0055] A transmission 13a is connected to the other end of the pipeline 52b via an oil filter 56 and a connection force control mechanism 45. The transmission 13a has a direction switching clutch mechanism 41 and a speed switching clutch mechanism 42.

[0056] The direction-switching clutch mechanism 41 includes, for example, a forward low-speed (FL) clutch mechanism 41A, a forward high-speed (FH) clutch mechanism 41B, and a reverse (R) clutch mechanism 41C. Thus, the direction-switching clutch mechanism 41 enables three-speed direction switching.

[0057] The speed switching clutch mechanism 42 includes speed switching clutch mechanisms 42A, 42B, 42C, and 42D for speeds from 1st to 4th speed. Therefore, the speed switching clutch mechanism 42 enables speed switching in four gears.

[0058] By connecting any one of the direction switching clutch mechanisms 41A to 41C with any one of the speed switching clutch mechanisms 42A to 42D, a speed gear position, such as 8 forward gears and 4 reverse gears, can be obtained.

[0059] The force control mechanism 45 has multiple electronically controlled adjusting valves 45A to 45G. The multiple electronically controlled adjusting valves 45A to 45G are respectively connected to multiple clutch mechanisms 41A to 41C and 42A to 42D of the transmission 13a.

[0060] When a fault is identified, it is preferable to connect hydraulic sensors, which serve as diagnostic sensors, to sensor connection positions P1 to P9 respectively to measure the hydraulic pressure at each of the sensor connection positions P1 to P9. Specifically, it is preferable to measure the hydraulic pressure of each of the speed switching clutch mechanisms 42A to 42D using hydraulic sensors connected to sensor connection positions P1 to P4. Furthermore, it is preferable to measure the hydraulic pressure of each of the direction switching clutch mechanisms 41A to 41C using hydraulic sensors connected to sensor connection positions P5 to P7. Additionally, it is preferable to measure the hydraulic pressure of the lock-up clutch mechanism 55 using a hydraulic sensor connected to sensor connection position P8. Furthermore, it is preferable to measure the hydraulic pressure of the other line 52b using a hydraulic sensor connected to sensor connection position P9.

[0061] The hydraulic pressure measured by the hydraulic sensors connected at sensor connection positions P1 to P9 is input as an electrical signal to the controller 10. It should be noted that, for the sake of simplicity in the accompanying drawings, the lines connecting the controller 10 to the sensor connection positions P8 and P9 are omitted.

[0062] like Figure 4 As shown, sensor connection positions P1 to P8 are, for example, arranged on the upper surface of the transmission 13a and the torque converter 13b. This facilitates the connection / disconnection of the hydraulic sensors to sensor connection positions P1 to P8.

[0063] <Structure of a Fault Diagnosis System>

[0064] Next, use Figure 5 The structure of the fault diagnosis system in this embodiment will be described.

[0065] Figure 5 It is shown Figure 1 The diagram shows the structure of a fault diagnosis system for the operating machinery. (See diagram for example.) Figure 5 As shown, the fault diagnosis system includes a working machine (e.g., a motorized grader) 100, a management server 65, a user terminal 68, a service terminal 69, and a communication network 62.

[0066] The management server 65 manages the information of the operating machinery 100. The user terminal 68 is a terminal used by users of the operating machinery 100. The service terminal 69 is a terminal used by service personnel who perform maintenance and repair of the operating machinery 100. The communication network 62 connects the operating machinery 100, the management server 65, the user terminal 68, and the service terminal 69 in a communicative manner.

[0067] Communication network 62 includes a satellite wireless communication network, a dedicated terrestrial communication network, and a computer communication network. The satellite wireless communication network connects the operating machinery 100 to the satellite earth station 61 via a communication satellite 63. The dedicated terrestrial communication network connects the satellite earth station 61 to the management server 65. The computer communication network is the Internet or similar network that connects the management server 65 to user terminals 68 or service terminals 69. It should be noted that reference numeral 64 in the attached diagram represents multiple GPS (Global Positioning System) satellites.

[0068] The satellite wireless communication network is used to enable communication between the working machine 100 and the management server 65 from any location. If the same purpose can be achieved, other types of mobile communication networks or wireless communication networks can be used instead of the satellite wireless communication network.

[0069] User terminal 68 and service terminal 69 can be, for example, personal computers, workstations, portable information terminals (including mobile phones, tablets, etc.). Each terminal 68 and 69 can execute applications for bidirectional communication with the management server 65.

[0070] The work equipment 100 is capable of bidirectional communication with the management server 65 via a satellite wireless communication network. The work equipment 100 has the function of continuously detecting and collecting operational information indicating its current operating status internally, and sending the collected operational information to the management server 65 in essentially real-time. The operational information of the work equipment 100 includes, for example, cumulative operating time (service instrument values), engine speed, battery voltage, fuel level, and engine coolant temperature.

[0071] The management server 65 includes, for example, a communication server 66 and a maintenance server 67. The communication server 66 controls the communication between the machine 100, the user terminal 68, and the service terminal 69. The maintenance server 67 generates and manages management information for any abnormalities in the machine 100.

[0072] Abnormal information detected inside the operating machinery 100 can also be displayed on the user terminal 68 and the service terminal 69 respectively via the communication network 62. In addition, commands related to fault diagnosis in the operating machinery 100 can also be issued from the user terminal 68 and the service terminal 69 respectively.

[0073] Figure 1 as well as Figure 2 The display device 33 shown can also be the display unit of the user terminal 68 or the service terminal 69. Additionally, Figure 3The controller 10 shown can also be any of the maintenance server 67, user terminal 68, or service terminal 69. Additionally, Figure 3 The controller 10 shown can also be mounted on the work machine 100.

[0074] <Structure of Functional Modules in Diagnostic Support System and Fault Diagnosis System>

[0075] Next, use Figure 6 The structure of the functional modules of the diagnostic support system and the fault diagnosis system in this embodiment is described.

[0076] Figure 6 It is shown Figure 1 The diagram shows an example of a diagnostic support system and fault diagnosis system for the operating machinery. (See diagram for example.) Figure 6 As shown, the diagnostic support system of the motorized grader 100 includes a controller 10, a monitoring sensor 31, an input device 32, and a display device 33.

[0077] The monitoring sensor 31 detects the motion characteristics of the motorized grader 100. The monitoring sensor 31 is a sensor that continuously monitors the motion characteristics; for example, it may be connected to... Figure 3 The hydraulic sensor shown is connected at any of the positions P1 to P9. The monitoring sensor 31 is not limited to a hydraulic sensor; it can also be a rotation sensor, a temperature sensor, or any other type of sensor.

[0078] The input device 32 receives timing information related to the time when the user perceives an anomaly during the operation of the machinery 100, or location information related to the part of the machine where the user perceives the anomaly. Specifically, if the user performs an input operation on the input device 32 at the time when they perceive an anomaly (the time when they perceive inconsistency during operation), the timing of this input operation is input to the input device 32 as timing information of the anomaly occurrence. Alternatively, the user may input the time when they perceive an anomaly during the operation of the machinery 100 into the input device 32, thereby receiving this input time as timing information of the anomaly occurrence.

[0079] The controller 10 has a candidate information acquisition unit 1, an abnormal state judgment unit 2, a diagnostic location determination unit 3, a sensor connection position determination unit 4, a sensor addition judgment unit 5, a display device control unit 6, and a storage unit 7.

[0080] The storage unit 7 stores the normal operating characteristic values ​​of each part of the operating characteristics of the machine tool 100. In addition, the storage unit 7 stores a table showing the correspondence between the sensor detection position and the diagnostic part (hereinafter referred to as the "first table"), a table showing the correspondence between the detected abnormal part and the diagnostic part (hereinafter referred to as the "second table"), and a table showing the correspondence between the diagnostic part and the sensor connection position (hereinafter referred to as the "third table").

[0081] In addition, the storage unit 7 stores connection position information (hereinafter referred to as "connection position information") indicating the locations where existing monitoring sensors are connected and the locations where existing monitoring sensors are not connected among the multiple sensor connection locations. In addition, the storage unit 7 stores information on the types of sensors that can be connected to the multiple sensor connection locations (hereinafter referred to as "sensor type information").

[0082] Furthermore, the storage unit 7 can also input an operation to the input device 32 when the user senses an abnormality during the operation of the machine 100, thereby storing the motion characteristic values ​​of each part of the machine 100 at the time of the input operation. Additionally, the storage unit 7 can continuously store the motion characteristic values ​​of each part of the machine 100.

[0083] The candidate information acquisition unit 1 acquires the detection signal from the monitoring sensor 31 or the input signal from the input device 32. The candidate information acquisition unit 1 outputs the acquired detection signal from the monitoring sensor 31 as candidate information for anomaly detection to the anomaly state determination unit 2. Additionally, the candidate information acquisition unit 1 outputs the acquired input signal from the input device 32 as candidate information for anomaly detection to the diagnostic location determination unit 3.

[0084] The abnormality determination unit 2 determines whether the motion characteristic detected by the monitoring sensor 31 is abnormal based on the acquired candidate information (detection signal of the monitoring sensor 31). The determination of whether it is abnormal is performed by comparing the characteristic value of the candidate information with the normal motion characteristic value stored in the storage unit 7. For example, if the motion characteristic detected by the monitoring sensor 31 is within the range of the normal motion characteristic values ​​stored in the storage unit 7, the abnormality determination unit 2 determines that the motion characteristic is normal. On the other hand, if the motion characteristic detected by the monitoring sensor 31 is outside the range of the normal motion characteristic values ​​stored in the storage unit 7, the abnormality determination unit 2 determines that the motion characteristic is abnormal. The abnormality determination unit 2 outputs a signal indicating the determination result to the diagnostic part determination unit 3.

[0085] Furthermore, if the abnormality determination unit 2 determines that the operation characteristics are abnormal, it outputs a signal indicating the determination result to the display device control unit 6. Based on the obtained determination result signal, the display device control unit 6 controls the display device 33 to display the content where the abnormality occurred. Thus, the display device 33 displays the content where the abnormality occurred.

[0086] The diagnostic location determination unit 3 determines the location requiring fault diagnosis based on the judgment result signal obtained from the abnormal state judgment unit 2 or the candidate information (input signal of the input device 32) obtained from the candidate information acquisition unit 1. In other words, the diagnostic location determination unit 3 determines the location requiring fault diagnosis based on the candidate information of the abnormality candidate. The diagnostic location determination unit 3 outputs a signal indicating the determined diagnostic location to the sensor connection position determination unit 4.

[0087] The sensor connection position determination unit 4 determines the sensor connection position (first sensor connection position) for connecting the diagnostic sensor based on the acquired signal from the diagnostic site. The sensor connection position determination unit 4 refers to the third table stored in the storage unit 7 and determines the first sensor connection position based on the acquired signal from the diagnostic site. The sensor connection position determination unit 4 outputs a signal indicating the determined first sensor connection position to the sensor addition judgment unit 5.

[0088] The sensor addition determination unit 5 determines whether a sensor should be added based on the acquired signal indicating the connection position of the first sensor. Specifically, the sensor addition determination unit 5 determines whether an existing monitoring sensor is connected to the first sensor connection position. The sensor addition determination unit 5 refers to the connection position information stored in the storage unit 7 and determines whether a monitoring sensor is connected to the first sensor connection position based on the acquired first sensor connection position. In other words, the sensor addition determination unit 5 determines whether the first sensor connection position where a diagnostic sensor should be connected is different from the sensor connection position where the monitoring sensor 31 is connected (the second sensor connection position).

[0089] When the sensor addition judgment unit 5 determines that a monitoring sensor is already installed at the first sensor connection position (or determines that the first sensor connection position is the same as the second sensor connection position), it instructs the display device control unit 6 to start displaying the fault diagnosis content of the sensor connection position.

[0090] On the other hand, when the sensor addition judgment unit 5 determines that there is no existing monitoring sensor at the first sensor connection position (when it determines that the first sensor connection position is different from the second sensor connection position), it refers to the sensor type information stored in the storage unit 7 and, based on the obtained first sensor connection position, determines whether it is possible to reconnect the existing monitoring sensor 31 from the second sensor connection position to the first sensor connection position.

[0091] If the sensor addition determination unit 5 determines that the existing monitoring sensor cannot be reconnected from the second sensor connection position to the first sensor connection position, it instructs the display device control unit 6 to display the location information of the first sensor connection position where the diagnostic sensor can be added. In addition, in this case, the sensor addition determination unit 5 instructs the display device control unit 6 to display a reminder to add a new diagnostic sensor to the first sensor connection position. Furthermore, the display device control unit 6 displays the operating steps for adding the new diagnostic sensor to the first sensor connection position.

[0092] On the other hand, when the sensor addition determination unit 5 determines that the existing monitoring sensor can be reconnected from the second sensor connection position to the first sensor connection position, it instructs the display device control unit 6 to display the location information of the first sensor connection position where the monitoring sensor 31 can be reconnected. Furthermore, in this case, the sensor addition determination unit 5 instructs the display device control unit 6 to display a reminder to reconnect the monitoring sensor 31 to the first sensor connection position. Moreover, it instructs the display device control unit 6 to display the operation steps for reconnecting the monitoring sensor to the first sensor connection position.

[0093] The display device control unit 6 controls the display device 33 based on the indication signal obtained from the sensor-added judgment unit 5.

[0094] As described above, when a monitoring sensor 31 is connected to the first sensor connection position, the display device 33 displays the contents of the fault diagnosis at the starting sensor connection position.

[0095] Furthermore, if the existing monitoring sensor 31 is not connected to the first sensor connection location, and it is not possible to reconnect the monitoring sensor 31 to the first sensor connection location, the display device 33 displays the location information of the first sensor connection location where the diagnostic sensor can be added. In this case, the display device 33 also displays a prompt to add a new diagnostic sensor to the first sensor connection location. Moreover, the display device 33 displays the operating steps for adding a new diagnostic sensor to the first sensor connection location.

[0096] Furthermore, if the existing monitoring sensor 31 is not connected to the first sensor connection location, and it is possible to reconnect the monitoring sensor 31 to the first sensor connection location, the display device 33 displays the location information of the first sensor connection location where the monitoring sensor 31 can be reconnected. In this case, the display device 33 also displays a prompt to reconnect the monitoring sensor 31 to the first sensor connection location. Moreover, the display device 33 displays the operating steps for reconnecting the monitoring sensor to the first sensor connection location.

[0097] Alternatively, the corresponding page of a manual or operating instruction booklet containing the location information of the first sensor connection point can be displayed on the display device 33, serving as the location information of the first sensor connection point. Alternatively, the location information of the first sensor connection point can be... Figure 4 An image showing the sensor connection positions P1 to P8, as illustrated, is displayed on the display device 33. Users or service personnel can confirm the location information of the first sensor connection position via the display device 33. Thus, users or service personnel can easily determine the location where the diagnostic sensor should be connected.

[0098] Furthermore, the fault diagnosis system of this embodiment includes the aforementioned diagnostic support system, diagnostic sensor 34, and motion characteristic analysis unit 8 of controller 10. Diagnostic sensor 34 may be a sensor already installed at the first sensor connection location, a monitoring sensor 31 reconnected to the first sensor connection location, or a newly added sensor at the first sensor connection location. Diagnostic sensor 34 detects the motion characteristics of the machine 100 when it is operated for diagnostic purposes. Diagnostic sensor 34 outputs the detected motion characteristics as a detection signal to motion characteristic analysis unit 8 of controller 10. Motion characteristic analysis unit 8 automatically analyzes the motion characteristics of the machine 100 based on the detection signal from diagnostic sensor 34. Motion characteristic analysis unit 8 outputs a signal indicating the analysis result to display device control unit 6. Display device control unit 6 controls display device 33 to display the analysis result based on the obtained analysis result signal. Thus, display device 33 displays the analysis result.

[0099] <Diagnostic Support Methods>

[0100] Next, the diagnostic support methods provided by the aforementioned diagnostic support system will be explained.

[0101] Figure 7 This is a flowchart illustrating an example of a diagnostic support method for operating machinery according to one embodiment of the present disclosure. Figure 8 It shows in detail Figure 7 The flowchart shows the process of adding a sensor for judgment.

[0102] like Figure 6 as well as Figure 7 As shown, the candidate information acquisition unit 1 of the controller 10 acquires the detection signal of the monitoring sensor 31 or the input signal of the input device 32 as a candidate state for an abnormality (step S1: Figure 7 ).

[0103] The detection signal of the monitoring sensor 31 can also be, for example, the detection signal of the monitoring sensor 31 used to monitor the operating characteristics of the power transmission device. The monitoring sensor 31 can be installed on... Figure 3 The sensor can be connected to any of the following positions: P1 to P9.

[0104] The input signal to input device 32 is, for example, a signal input by the user who senses vibration (speed change vibration) during gear shifting operation. For instance, if the user performs an input operation on input device 32 at the moment they sense the speed change vibration, the input signal to input device 32 is a signal indicating the moment the input operation was performed. Furthermore, if the user inputs the moment they sensed the speed change vibration to input device 32, the input signal to input device 32 is a signal indicating that input moment. Additionally, if the user who sensed the speed change vibration inputs a location they believe is abnormal to input device 32, the input signal to input device 32 is a signal indicating that location.

[0105] When the candidate information acquisition unit 1 acquires the detection signal from the monitoring sensor 31, it outputs the acquired detection signal from the monitoring sensor 31 as candidate information to the abnormal state determination unit 2. Furthermore, when the candidate information acquisition unit 1 acquires the input signal from the input device 32, it outputs the acquired input signal from the input device 32 to the diagnostic location determination unit 3.

[0106] Based on the acquired candidate information, the abnormal state determination unit 2 determines whether the motion characteristics detected by the monitoring sensor 31 are abnormal (step S2: Figure 7 If the abnormality determination unit 2 determines that the above-mentioned operating characteristic is not abnormal, it repeats the acquisition of the detection signal of the monitoring sensor 31 (step S1) and the determination of the abnormality (step S2). Alternatively, if the abnormality determination unit 2 determines that the above-mentioned operating characteristic is abnormal, the abnormality determination unit 2 outputs a signal indicating the determination result to the diagnostic part determination unit 3.

[0107] Furthermore, if the abnormality determination unit 2 determines that the operating characteristics are abnormal, it outputs a signal indicating the determination result to the display device control unit 6. Based on the obtained determination result signal, the display device control unit 6 controls the display device 33 to display the content indicating that an abnormality has occurred. Thus, the display device 33 displays the content indicating that an abnormality has occurred. For example, if a user who has sensed transmission vibration confirms the content displayed on the display device 33, the possibility that an abnormality has occurred in the power transmission device (e.g., clutch mechanisms 41A-41C, 42A-42D) can be identified.

[0108] The diagnostic site determination unit 3 determines the site to be diagnosed (diagnostic site) based on the judgment result obtained from the abnormal state judgment unit 2 or the input signal obtained from the input device 32 obtained from the candidate information acquisition unit 1. (Step S3:) Figure 7 ).

[0109] The diagnostic location determination unit 3 determines the diagnostic location of the operating machine 100 based on the detection signal of the monitoring sensor 31, which is judged to be abnormal. At this time, the diagnostic location determination unit 3 refers to the first table stored in the storage unit 7 to determine the diagnostic location.

[0110] Furthermore, the diagnostic location determination unit 3 determines the diagnostic location of the machine tool 100 based on timing information indicating when an anomaly occurs or location information related to the location where the anomaly is detected. At this time, when the user operates the input device 32, the motion characteristic values ​​of each part of the machine tool 100 at the time the input device 32 is operated are stored in the storage unit 7. The diagnostic location determination unit 3 determines the diagnostic location by comparing the motion characteristic values ​​of each part at the time the input device 32 is operated (stored in the storage unit 7) with the normal motion characteristic values ​​of each part (stored in the storage unit 7). At this time, the diagnostic location is determined based on the motion characteristic values ​​of each part at the time the input device 32 is operated that deviate from the normal motion characteristic values ​​of each part.

[0111] Furthermore, when the user inputs the moment when an abnormality is perceived into the input device 32, the diagnostic location determination unit 3 determines the diagnostic location by comparing the motion characteristic values ​​of each part at the input moment with the normal motion characteristic values ​​of each part stored in the storage unit 7. In this case, the diagnostic location is determined based on the motion characteristic values ​​of each part at the input moment that deviate from the normal motion characteristic values ​​of that part.

[0112] In addition, when the user inputs a location where an abnormality is perceived, the diagnostic location determination unit 3 refers to a second table stored in the storage unit 7 to determine the diagnostic location.

[0113] The diagnostic site determination unit 3 outputs a signal indicating the determined diagnostic site to the sensor connection position determination unit 4.

[0114] The sensor connection position determination unit 4 determines the sensor connection position (first sensor connection position) for connecting the diagnostic sensor based on the acquired signal from the diagnostic site (step S4:). Figure 7 The sensor connection position determination unit 4 can determine one first sensor connection position, or it can determine multiple first sensor connection positions. For example, the sensor connection position determination unit 4 can... Figure 3 The multiple sensor connection positions P1 to P9 shown are determined as the first sensor connection positions.

[0115] The sensor connection position determination unit 4 determines the first sensor connection position by referring to the third table stored in the storage unit 7 and based on the acquired diagnostic location signal. The sensor connection position determination unit 4 outputs a signal indicating the determined first sensor connection position to the sensor addition judgment unit 5.

[0116] The sensor addition determination unit 5 determines, based on the signal indicating the obtained connection position of the first sensor, whether a sensor should be added (step S5: Figure 7 ).use Figure 6 as well as Figure 8 The judgment process of the judgment unit 5 added to the sensor is explained.

[0117] like Figure 6 as well as Figure 8 As shown, the sensor is equipped with a judgment unit 5 to determine whether a monitoring sensor is connected at the first sensor connection position (step S51: Figure 8 The sensor is equipped with a judgment unit 5, which refers to the connection position information stored in the storage unit 7 and determines whether a monitoring sensor is connected at the first sensor connection position based on the obtained first sensor connection position.

[0118] When the sensor addition judgment unit 5 determines that a monitoring sensor has been installed at the first sensor connection location, it instructs the display device control unit 6 to display the content of the diagnosis of the first sensor connection location (step S52). Figure 8 ).

[0119] On the other hand, when the sensor addition judgment unit 5 determines that there is no existing monitoring sensor at the first sensor connection position, it determines whether an existing monitoring sensor can be reconnected at the first sensor connection position (step S53: Figure 8 The sensor is equipped with a judgment unit 5, which refers to the sensor type information stored in the storage unit 7 and determines, based on the obtained first sensor connection position, whether it is possible to reconnect an existing monitoring sensor at the first sensor connection position.

[0120] At this time, the sensor addition judgment unit 5 determines whether the type of the first wiring cable at the first sensor connection location is the same as the type of the second wiring cable at the second sensor connection location, and if the determination is that they are the same, it determines whether the existing monitoring sensor can be reconnected to the first sensor connection location. Alternatively, the sensor addition judgment unit 5 may determine whether the type of sensor that can be connected to the first sensor connection location is the same as the type of the existing monitoring sensor, and if the determination is that they are the same, it determines whether the existing monitoring sensor can be reconnected to the first sensor connection location for diagnostic purposes. Alternatively, if the sensor addition judgment unit 5 determines, based on the data at the time of connection, that the second wiring cable itself is faulty, it determines that the existing monitoring sensor cannot be reconnected to the first sensor connection location.

[0121] If the sensor addition judgment unit 5 determines that it is not possible to reconnect the existing monitoring sensor at the first sensor connection position, it instructs the display device control unit 6 to display the position information of the first sensor connection position for adding the disconnection sensor (step S54). Figure 8 In addition, in this case, the sensor is equipped with a judgment unit 5 to instruct the display device control unit 6 to display information on the operation steps for adding a diagnostic sensor at the first sensor connection position.

[0122] On the other hand, when the sensor addition / discontinuity determination unit 5 determines that it is possible to reconnect an existing monitoring sensor at the first sensor connection position, it instructs the display device control unit 6 to display the location information of the first sensor connection position where the monitoring sensor is reconnected (step S55). Figure 8 In addition, in this case, the sensor is equipped with a judgment unit 5, which instructs the display device control unit 6 to display information on the operation steps for reconnecting the monitoring sensor from the second sensor connection position to the first sensor connection position.

[0123] As described above, the sensor addition judgment unit 5 determines whether a sensor should be added, and outputs an indication signal to the display device control unit 6 based on the judgment result.

[0124] like Figure 6 as well as Figure 7 As shown, the display device control unit 6 controls the display device 33 based on the indication signal obtained from the sensor addition judgment unit 5 (step S6: Figure 7 ).

[0125] As described above, when a monitoring sensor 31 is already connected at the first sensor connection position, the display device 33 displays the diagnostic content of the starting sensor connection position.

[0126] Furthermore, if the existing monitoring sensor 31 is not connected to the first sensor connection location, and it is not possible to reconnect the monitoring sensor 31 to the first sensor connection location, the display device 33 displays the location information of the first sensor connection location where the diagnostic sensor can be added. In this case, the display device 33 also displays a prompt to add a new diagnostic sensor to the first sensor connection location. Moreover, the display device 33 displays the operating steps for adding a new diagnostic sensor to the first sensor connection location.

[0127] Furthermore, if the existing monitoring sensor 31 is not connected to the first sensor connection position, and it is possible to reconnect the monitoring sensor 31 to the first sensor connection position, the display device 33 displays the location information of the first sensor connection position where the monitoring sensor 31 is reconnected. In this case, the display device 33 also displays a prompt to reconnect the monitoring sensor 31 from the second sensor connection position to the first sensor connection position. Moreover, the display device 33 displays the operation steps for reconnecting the monitoring sensor to the first sensor connection position.

[0128] Alternatively, the corresponding page of a manual or operating instruction booklet containing the location information of the first sensor connection point can be displayed on the display device 33, serving as the location information of the first sensor connection point. Alternatively, the location information of the first sensor connection point can be... Figure 4 Images showing the sensor connection positions P1 to P8 are displayed on display device 33.

[0129] Alternatively, information regarding the procedures for connecting diagnostic sensors (additional connection of new diagnostic sensors or reconnection of monitoring sensors) can be displayed on the display device 33 along with the corresponding pages of manuals or operating instructions containing the procedures. Alternatively, information regarding the procedures for connecting diagnostic sensors can be displayed on the display device 33 as an image.

[0130] Users or service personnel can confirm the location information of the first sensor connection point and the operating procedures through the display device 33. Thus, users or service personnel can easily know the location where the diagnostic sensor should be connected and the operating procedures for connecting the diagnostic sensor.

[0131] Based on the location information of the first sensor connection location displayed on the display device 33, users or service personnel can change the connection of an existing monitoring sensor to serve as the diagnostic sensor at the required first sensor connection location, or connect a new diagnostic sensor. This enables the diagnosis of the required first sensor connection location.

[0132] <Fault diagnosis procedure after connecting diagnostic sensors>

[0133] Next, use Figure 9 The procedure for fault diagnosis after connecting diagnostic sensors is explained.

[0134] Figure 9 This is a flowchart illustrating the fault diagnosis process after connecting diagnostic sensors. For example... Figure 9 As shown, the diagnostic sensor 34 ( Figure 6 Connect to the first sensor connection location required for diagnosis (step S11).

[0135] like Figure 3 As shown, when the diagnostic sensor 34 is connected to the first sensor connection position (e.g., any position among P1 to P9), a signal indicating that the diagnostic sensor 34 is connected to the first sensor connection position is output to the controller 10. The controller 10 outputs a signal indicating that the diagnostic sensor 34 is connected to the first sensor connection position when the monitoring sensor 31 ( Figure 6 When the connection is changed from the second sensor connection position to the first sensor connection position, the monitoring sensor 31 is identified as the diagnostic sensor 34 connected to the first sensor connection position based on the signal indicating that the reconnection of the monitoring sensor 31 has ended. Furthermore, if a new diagnostic sensor 34 is connected to the first sensor connection position, the controller 10 identifies the new diagnostic sensor 34 as the diagnostic sensor 34 connected to the first sensor connection position based on the signal indicating that the new diagnostic sensor 34 is already connected to the first sensor connection position.

[0136] If the existing monitoring sensor 31 is reconnected as the diagnostic sensor 34, or if a new diagnostic sensor 34 is connected, the system enters diagnostic mode and automatically performs a pre-operation check (step S12). This pre-operation check refers to checking, with the machine 100 stopped, whether the diagnostic sensor 34 is correctly installed in the sensor connection position and whether the diagnostic sensor 34 can correctly detect the operating characteristics, etc.

[0137] If the results of the pre-operation check, the instructions, and the operating characteristics (e.g., hydraulic) are significantly different, the user or service personnel shall confirm or replace the connection of the diagnostic sensor 34, or use the input device 32 to instruct the controller 10. Alternatively, if the results of the pre-operation check and the diagnostic sensor 34 are normal, the controller 10 controls the display device 33 to display that driving is permitted.

[0138] After the user confirms the display indicating that driving is permitted, the user can reproduce the driving action that detected or was notified of the abnormality by operating the work machinery 100 (step S13). If the user senses vibration during, for example, gear shifting operation, the same operation as the gear shifting operation in which the vibration was sensed is reproduced.

[0139] In this operation, the controller 10 automatically analyzes the operating characteristics of the machine tool 100 based on the detection signal from the diagnostic sensor 34 (step S14). For example, the controller 10 obtains signals from the diagnostic sensor regarding changes in rotational speed or hydraulic pressure that could cause vibration during gear shifting and performs automatic analysis. Specifically, the operating characteristic analysis unit 8 of the controller 10 ( Figure 6 The controller 10 performs the aforementioned automatic analysis. The results of the automatic analysis are displayed on the display device 33, or sent to the user terminal 68 or service terminal 69 via the communication network 62. Thus, in the event of an exception arising from the automatic analysis, the quality maintenance department, design department, etc., can analyze the exception via the service terminal 69.

[0140] The result of the automatic analysis is that the diagnosis ends by identifying the cause of the abnormality (step S15). If the automatic analysis results indicate that the cause of the abnormality exists, for example, in the hydraulic valve, the controller 10 will display the determination result, such as the need to replace the hydraulic valve, on the display device 33, or send it to the user terminal 68 or the service terminal 69 via the communication network 62.

[0141] Afterwards, the controller 10 recommends the next action (step S16). As the next action, the controller 10 may display, for example, whether to continue operating the machine 100 or to stop it until repairs are required, on the display device 33, or send this information to the user terminal 68 or service terminal 69 via the communication network 62. Alternatively, the next action could be automatic analysis, or it could be an instruction to replace consumable parts.

[0142] When the machine 100 is restarted, the monitoring sensor used as a diagnostic sensor is reconnected to its original sensor connection location (step S17). The reconnection of the monitoring sensor is performed, for example, by the user or service personnel.

[0143] The above steps complete the fault diagnosis operation after connecting the diagnostic sensor in this embodiment (step S18).

[0144] <Effect>

[0145] Next, the effects of this implementation method will be explained.

[0146] like Figure 3 as well as Figure 4As shown, in the case of a power transmission device, such as a gearbox, there are multiple sensor connection points P1 to P9 where it is desired to measure hydraulic pressure as a motion characteristic. Therefore, installing diagnostic sensors at all sensor connection points P1 to P9 where hydraulic pressure needs to be measured for fault diagnosis would increase the number of components. Especially in small and medium-sized mass-produced models, it is cost-inefficient to install multiple diagnostic sensors and make each one have communication capabilities.

[0147] In this embodiment, such as Figure 6 As shown, the controller 10 controls the display device 33 to display the location information of the first sensor connection position (e.g., P1 to P9) where the diagnostic sensor should be connected. The display device 33 may display, for example, the corresponding page from a manual or operating instruction booklet listing the first sensor connection positions P1 to P9, and may also display... Figure 4 The image shown illustrates the connection positions of the first sensors, P1 to P8. Users or service personnel can confirm the location information of the first sensor connection positions P1 to P9 via the display device 33, thereby easily determining the location where the diagnostic sensor should be connected. This reduces the effort required for connecting the diagnostic sensor during fault diagnosis. Therefore, it is not necessary to install the diagnostic sensor at all the first sensor connection positions P1 to P9 where the operating characteristics need to be measured; only the diagnostic sensor needs to be connected at the required location during fault diagnosis. Thus, easy and accurate fault diagnosis can be performed with a small number of components.

[0148] In addition, in this embodiment, such as Figure 6 As shown, the controller 10 controls the display device 33 to display information about the operation steps of connecting the diagnostic sensors to the first sensor connection positions P1 to P9. Thus, users or service personnel can confirm the operation steps through the display device 33, enabling easy and accurate fault diagnosis.

[0149] In addition, in this embodiment, such as Figure 6 As shown, the controller 10 determines whether the connection position of the first sensor is different from the connection position of the second sensor. Therefore, it can determine whether it is necessary to reconnect the monitoring sensor, which is currently connected to the second sensor connection position, to the first sensor connection position as a diagnostic sensor.

[0150] In addition, in this embodiment, such as Figure 6 As shown, when the controller 10 determines that the connection positions of the first and second sensors are different, it determines whether the monitoring sensor can be reconnected from the second sensor connection position to the first sensor connection position. Therefore, it can determine whether a new sensor other than the monitoring sensor needs to be added as a diagnostic sensor to be connected to the first sensor connection position.

[0151] In addition, in this embodiment, such as Figure 6 As shown, when the controller 10 determines that it is possible to reconnect the monitoring sensor from the second sensor connection position to the first sensor connection position, the control display device 33 instructs the monitoring sensor to reconnect from the second sensor connection position to the first sensor connection position. This allows the user or service personnel to know whether it is necessary to reconnect the monitoring sensor from the second sensor connection position to the first sensor connection position. Furthermore, since the monitoring sensor can be used as a diagnostic sensor, there is no need to prepare additional diagnostic sensors. Therefore, fault diagnosis can be performed with a smaller number of sensors.

[0152] For example, assuming in Figure 3 In cases where a monitoring sensor is connected to sensor connection position P9 (the second sensor connection position), but not to other sensor connection positions P1 to P8, fault diagnosis can be performed by reconnecting the monitoring sensor connected to sensor connection position P9 to sensor connection position P1. This allows for the diagnosis of whether a fault exists in the forward low-speed clutch mechanism 41A. By sequentially reconnecting the monitoring sensor connected to sensor connection position P9 to sensor connection positions P1 to P8, fault diagnosis can be performed to diagnose whether faults exist in each clutch mechanism 41A-41C, 42A-42D, and 55. Furthermore, by performing fault diagnosis while keeping the monitoring sensor connected to sensor connection position P9, faults can be diagnosed in components such as the hydraulic pump 51 and the oil filter 56.

[0153] In addition, in this embodiment, such as Figure 9 As shown, the controller 10 identifies the monitoring sensor as a diagnostic sensor connected to the first sensor connection location based on the signal indicating the end of the reconnection of the monitoring sensor from the second sensor connection location to the first sensor connection location. Therefore, the monitoring sensor can be used as a diagnostic sensor for fault diagnosis.

[0154] It should be noted that in the above implementation method, Figure 3 as well as Figure 6 The controller 10 shown can be mounted on the motorized grader 100 or configured separately from the motorized grader 100. When the controller 10 is configured separately from the motorized grader 100, the controller 10 can also be... Figure 5The management server 65 (communication server 66, maintenance server 67) is shown. When the controller 10 is configured separately from the motorized grader 100, the controller 10 can also be wirelessly connected to the monitoring sensor 31, input device 32, display device 33, etc. The controller 10 is, for example, a processor, which may be a CPU (Central Processing Unit). The storage unit 7 may be, for example, a memory.

[0155] Furthermore, in the above embodiments, the input device 32 and the display device 33 are as follows: Figure 1 The configuration shown is within the cab 11, but it can also be configured outside the cab 11. Furthermore, the display device 33 can be configured separately from the motorized grader 100. In this case, the display device 33 can be a user terminal 68, a service terminal 69, or a tablet terminal. When the display device 33 is a tablet terminal, it can also function as an input device 32.

[0156] Alternatively, the motorized grader 100 can also be operated remotely. In this case, a display device 33, an operating device, etc., are installed at a remote location of the motorized grader 100. The motorized grader 100 is operated by wirelessly receiving operating commands output from the display device 33, the operating device, etc., installed at the remote location.

[0157] In this manual, "abnormality" refers to a state where the operator perceives or the sensors detect that the operating characteristics of the machinery are not normal. Diagnosis is performed based on this abnormality information to determine whether a fault exists. Furthermore, operating characteristics can also be pressure other than hydraulic pressure, or characteristics other than pressure such as temperature and speed (e.g., rotational speed).

[0158] It should be understood that all aspects of the embodiments disclosed herein are illustrative and not restrictive. The scope of the invention is shown by the technical solutions rather than the foregoing description, and includes all modifications of the same meaning and scope.

[0159] Explanation of reference numerals in the attached figures:

[0160] 1...Supplementary Information Acquisition Unit; 2...Abnormal Status Judgment Unit; 3...Diagnostic Location Determination Unit; 4...Sensor Connection Position Determination Unit; 5...Sensor Addition Judgment Unit; 6...Display Device Control Unit; 7...Storage Unit; 8...Motion Characteristic Analysis Unit; 10...Controller; 11...Cab; 11S...Driver's Seat; 12...Working Device; 13...Engine Hood; 13a...Transmission; 13b...Torque Converter; 13c...Engine; 14...Front Frame; 15...Rear Frame; 16...Front Wheel; 17...Rear Wheel; 18...Body Frame; 21...Dozer Blade; 22...Tow Rod; 23...Spinning Table; 25...Lifting Cylinder; 28...Articulated Cylinder; 31...Monitoring Sensor; 32...Input Device; 33...Display Display device; 34... Diagnostic sensor; 41, 41A~41C... Direction switching clutch mechanism; 42, 42A~42D... Speed ​​switching clutch mechanism; 45... Connection force control mechanism; 45A~45G... Electronic control regulating valve; 51... Hydraulic pump; 52a, 52b... Piping; 53... Lock-up valve; 54... Lock-up solenoid valve; 55... Lock-up clutch mechanism; 56... Oil filter; 61... Satellite Earth Bureau; 62... Communication network; 63... Communication satellite; 64... GPS satellite; 65... Management server; 66... ​​Communication server; 67... Maintenance server; 68... User terminal; 69... Service terminal; 100... Operating machinery (motorized grader); 121... Axis; P1~P9... Sensor connection positions.

Claims

1. A diagnostic support system for operating machinery, wherein, The diagnostic support system for the operating machinery includes: Display device; The controller determines the diagnostic location in the working machinery based on the candidate information of the abnormal candidate in the working machinery, determines the first sensor connection position of the diagnostic sensor for diagnosing the diagnostic location, and controls the display device to display the position information of the first sensor connection position. as well as A monitoring sensor is connected to the second sensor connection point of the operating machinery. The controller determines whether the connection position of the first sensor is different from the connection position of the second sensor, and if it determines that the connection position of the first sensor is different from the connection position of the second sensor, it determines whether the monitoring sensor can be reconnected from the connection position of the second sensor to the connection position of the first sensor.

2. The diagnostic support system for operating machinery according to claim 1, wherein, The controller controls the display device to display information about the operation steps of connecting the diagnostic sensor to the first sensor connection location.

3. The diagnostic support system for operating machinery according to claim 1, wherein, When the controller determines whether it is possible to reconnect the monitoring sensor from the second sensor connection location to the first sensor connection location, it determines the consistency between the type of the first wiring cable at the first sensor connection location and the type of the second wiring cable at the second sensor connection location.

4. The diagnostic support system for operating machinery according to claim 1 or 3, wherein, When the controller determines that it is possible to reconnect the monitoring sensor from the second sensor connection location to the first sensor connection location, it controls the display device to instruct the monitoring sensor to reconnect from the second sensor connection location to the first sensor connection location.

5. The diagnostic support system for operating machinery according to claim 4, wherein, The controller identifies the monitoring sensor as the diagnostic sensor connected to the first sensor connection location based on the signal indicating the end of the reconnection of the monitoring sensor from the second sensor connection location to the first sensor connection location.

6. A fault diagnosis system for operating machinery, wherein, The fault diagnosis system of the operating machinery includes: The diagnostic support system for the operating machinery according to any one of claims 1 to 5; and The diagnostic sensor is connected to the first sensor at the same connection point. The controller analyzes the motion characteristics of the operating machinery based on the detection signals from the diagnostic sensors.

7. A diagnostic support method for operating machinery, wherein the operating machinery has a display device, wherein, The diagnostic support method for the operating machinery includes the following steps: Based on the candidate information of the abnormal candidates in the operating machinery, the diagnostic location in the operating machinery is determined; Determine the connection position of the first sensor of the diagnostic sensor used to diagnose the diagnostic site; The display device is controlled to display the location information of the connection position of the first sensor; Determine whether the connection position of the first sensor is different from the connection position of the second sensor, which is connected to a monitoring sensor; as well as If it is determined that the connection position of the first sensor is different from the connection position of the second sensor, it is determined whether the monitoring sensor can be reconnected from the connection position of the second sensor to the connection position of the first sensor.

8. A fault diagnosis method for operating machinery, wherein, The fault diagnosis method for the operating machinery includes the following steps: Following the diagnostic support method for the operating machinery as described in claim 7, the operating characteristics of the operating machinery are analyzed based on the detection signal from the diagnostic sensor connected to the connection location of the first sensor.

Images