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Operating machine instrument diagnostic apparatus and instrument diagnostic system

A technology of construction machinery and diagnostic devices, which is applied to earth movers/shovels, registration/indicating machines, instruments, etc., can solve misdiagnosis, time series information is difficult to determine what state it is in, and state changes Points are not clear and other issues, to achieve the effect of reducing the possibility

Inactive Publication Date: 2010-03-17
HITACHI CONSTRUCTION MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] In Patent Document 2 and Patent Document 3, like construction machinery such as hydraulic excavators, the change point of the state change is not clear, and the state of the machine changes in various ways according to the operating environment conditions, and it is difficult to judge only by partially observing the time series information. In terms of the state of the object, there are still research topics on the processing method of the time series information
[0015] In Patent Document 4, since the alarm preset inside the machine can only function as a learning function, it cannot respond to unknown abnormalities, and misdiagnosis may occur
[0016] In Patent Documents 5 and 6, since the influence of other state quantities on the state quantity data used for abnormal diagnosis is not considered, misdiagnosis may also occur in this case

Method used

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  • Operating machine instrument diagnostic apparatus and instrument diagnostic system
  • Operating machine instrument diagnostic apparatus and instrument diagnostic system
  • Operating machine instrument diagnostic apparatus and instrument diagnostic system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0124] An embodiment of the diagnostic device of the present invention refers to the following Figure 1 to Figure 16 Be explained.

[0125] In this embodiment, various components included in a construction machine such as a construction machine (for example, a hydraulic excavator) will be described as an object machine to be diagnosed.

[0126] figure 1 The structure of the machine diagnosis system of this embodiment is shown. The machine diagnosis system has a machine diagnosis device 201, an input device 202, and a display device 204. The machine diagnosis device 201 has a data determination unit 101, a process learning unit 102, a state diagnosis unit 103, and a diagnostic database updater. Department 104, diagnostic database 111, process database 112.

[0127] First, the data judging unit 101 receives and inputs the device information 121 indicating the status of the device to be diagnosed, that is, from the outside. The input machine information 121 includes action co...

Embodiment 2

[0152] Below, refer to the differences from Example 1 as the center Figures 13 to 16 Another example different from Example 1 will be described.

[0153] The structure of the machine diagnosis system of this embodiment is as follows: Figure 13 As shown, the flow of the data judging mechanism of the machine diagnosis device is as follows Figure 14 shown.

[0154] First, in Figure 13 In the machine diagnosis system of this embodiment, the functions of the data determination unit 101A and the state diagnosis unit 103A of the machine diagnosis device 201A are the same as figure 1 shown differently.

[0155] That is, in Figure 14 In this process, the data judging unit 101A judges whether or not the device information 121 (operating condition information and internal state information) is input (S401). When the device information 121 is input, the operation condition information of the input device information 121 is compared with the operation condition information previ...

Embodiment 3

[0161] use Figure 17 ~ Figure 22 An example in which the present invention is applied to machine diagnosis of a large hydraulic excavator will be described.

[0162] Figure 17 It is a diagram showing the overall structure of a large hydraulic excavator and the machine diagnosis system.

[0163] in the Figure 17 Among them, the hydraulic excavator 1 is an ultra-large excavator (backhoe type) that is often used in overseas mines, for example, with a body weight of several hundred tons. The hydraulic excavator 1 has: a running body 2; a revolving body (body) 3 rotatably provided on the running body 2; a cab 4 provided on the front left side of the revolving body 3; The front working machine 5 is provided at the center of the front part of the rotating body 3 . The front working machine 5 is composed of the following components: a boom 6 rotatably provided on the rotating body 3; an arm 7 rotatably provided at the front end of the boom 6; The bucket 8. The rotating body 3...

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Abstract

A device diagnostic apparatus (201) comprising: data judgment means (101) for, when device information (121) including operating condition information and internal state information is inputted, comparing the operating condition information of the device information with operating condition information stored in a database (111) beforehand to judge whether or not both of the operating condition information agree with each other, and then outputting judgment result information; and state diagnosis means (103) for, when the judgment result information indicates that both of the operating condition information agree with each other, comparing the internal state information in the device information with internal state information stored in the database beforehand, and then outputting the result of the comparison. This makes it possible to reduce the possibility that false judgment result will be output, and to achieve the efficiency of maintenance work.

Description

technical field [0001] The present invention relates to a machine diagnosis device and a machine diagnosis system for diagnosing machine states of construction machines. Background technique [0002] Construction machinery such as large hydraulic excavators used in mines, etc., and other construction machinery are required to operate continuously 24 hours a day and 365 days a day without stopping, and maintenance work is required to keep the machine in a safe state before it stops abnormally. In general, specialized maintenance personnel carry out inspections through regular inspections, and investigate whether there are abnormalities. If abnormalities are found, necessary maintenance operations are performed to maintain a good machine condition. [0003] On the other hand, it is necessary to stop the machine for inspection and maintenance work. Therefore, for users who want to operate continuously, as long as the machine is in good condition, the inspection and maintenance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/26G05B23/02G06Q50/00
CPCE02F9/26E02F9/2054E02F9/268G07C3/00G05B23/02G06Q50/10
Inventor 铃木英明古野义纪柴田浩一渡边洋渡边丰
Owner HITACHI CONSTRUCTION MACHINERY CO LTD
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