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JP-7854957-B2 - A device for determining the soundness of construction machinery.

JP7854957B2JP 7854957 B2JP7854957 B2JP 7854957B2JP-7854957-B2

Inventors

  • エルセラフィ ハテム
  • 柿田 将幸
  • 眞保 友彰

Assignees

  • 日立建機株式会社

Dates

Publication Date
20260507
Application Date
20230328

Claims (11)

  1. A device for determining the soundness of construction machinery, The device comprises a calculation unit, The aforementioned arithmetic unit, - The vibration of the construction machine is measured via an accelerometer, - Based on the vibrations, the weight class of the construction machine is determined. -Measure the results of the mechanical operation of the construction machine, - Based on the weight class and the results of the machine operation, the soundness of the construction machine is determined. Device.
  2. The apparatus according to claim 1, wherein the vibration is measured while the construction machine is in a standby state.
  3. The apparatus according to claim 1, wherein the apparatus comprises a smartphone or a microcontroller.
  4. The calculation unit measures the start time and end time of the machine operation, and calculates the duration of the machine operation based on the start time and end time. The soundness of the construction machinery is further determined based on the duration. The apparatus according to claim 1.
  5. The device stores reference durations associated with each of the multiple weight classes, The soundness of the construction machinery is further determined based on the standard duration. The apparatus according to claim 4.
  6. The device stores vibration thresholds and vibration patterns associated with each of the multiple weight classes. The weight class of the construction machine is further determined based on the vibration threshold and the vibration pattern. The apparatus according to claim 1.
  7. The device stores the reference start position and reference end position of the machine operation. The calculation unit measures the start and end positions of the machine operation, The device displays the reference start position, the reference end position, the start position, and the end position. The apparatus according to claim 1.
  8. The apparatus according to claim 1, wherein the apparatus outputs information regarding measures to be taken for the construction machine based on the soundness.
  9. The device stores a list containing information representing each of the multiple machine operations, The device displays information indicating whether or not measurements related to each of the mechanical operations included in the list have already been performed. The apparatus according to claim 1.
  10. The device is equipped with a user interface, The aforementioned user interface is An operating unit for issuing a command to start the health determination, A display unit that displays at least one of the weight class and the machine operation, The apparatus according to claim 1, comprising:
  11. The apparatus according to claim 1, wherein the apparatus outputs the weight class, the mechanical operation, and the soundness in CSV format.

Description

This disclosure relates to a device for determining the soundness of construction machinery. Regarding construction machinery, it is crucial to measure its basic performance, diagnose and predict potential malfunctions in advance, perform maintenance before failures occur, and avoid interruptions to construction work. Basic performance refers to the inherent performance and standard specifications of the construction machinery. In this regard, the market demands that automated self-diagnosis tools (automatic self-diagnosis tools) be easy to use even for inexperienced operators, inexpensive, and user-friendly. For example, Patent Document 1 discloses an automated self-diagnosis technology that, in order to shorten the diagnosis time, diagnoses the presence or absence of abnormalities in each part of a construction machine based on the operating sound of the machine, identifies the cause of the abnormality based on the information of the diagnosed abnormal part when an abnormality is detected, and displays the identification result. Japanese Patent Publication No. 2021-67614 A diagram showing a schematic configuration example of a construction machinery diagnostic system according to one embodiment of the present disclosure.A block diagram showing an example of the schematic functional configuration of the processor 10 according to this embodiment.This figure shows an example of the internal function configuration of the information acquisition unit 101 of the performance measurement device 1.A diagram showing an example of the internal functional configuration of the weight class classification unit 102 of the performance measurement device 1.Examples of noise vibration scale.A diagram showing an example of the internal function configuration of the operation classification unit 103 of the performance measurement device 1.Examples of acceleration signal waveforms corresponding to various operations of the same construction machine.A flowchart illustrating the processing performed by the health diagnosis unit 104.A flowchart illustrating the detailed process of step S110 in Figure 8.An example of an acceleration signal containing false peaks.A diagram showing an example of the internal functional configuration of the basic performance reporting unit 105 of the performance measurement device 1.This figure shows an example of the configuration of a history log list 1201, which is an example of information held by the data storage unit 207 included in the memory device 20 of the performance measurement device 1.This figure shows an example of the configuration of performance reference value information 1301 held by the performance reference value holding unit 203 included in the memory device 20 of the performance measurement device 1.This figure shows an example of the configuration of the operating range reference value information 1401 held by the operating range reference value holding unit 204 included in the memory device 20 of the performance measurement device 1.This figure shows an example of the configuration of the representative waveform information 1501 for each operation, which is held by the representative waveform holding unit 202 included in the memory device 20 of the performance measurement device 1.This figure shows an example of the configuration of recommendation information 1601 held by the recommendation information holding unit 205 included in the memory device 20 of the performance measurement device 1.This figure shows an example of the configuration of the operation list information 1701 (table) held by the operation list holding unit 206 included in the memory device 20 of the performance measurement device 1.A diagram comparing an example of input information 1801 to the performance measurement device 1 with an example of output information 1802 from the device 1.An example of a user interface displayed on the display screen of the performance measurement device 1 or the display screen of the user terminal 4.A flowchart illustrating the performance measurement and diagnostic process according to this embodiment. <System Configuration Example> Figure 1 shows a schematic configuration example of a construction machinery diagnostic system (a device for determining the soundness of construction machinery) according to one embodiment. The construction machinery diagnostic system comprises a performance measurement device 1, a sensor group 2, and a user terminal 4, and diagnoses a construction machine 3. In the system configuration example in Figure 1, the user terminal 4 and the performance measurement device 1 are shown as separate devices; however, the user terminal 4 may also implement the functions of the performance measurement device 1 and its data storage/retention units. Furthermore, although the user terminal 4 and the sensor group 2 are shown as separate devices in the system configuration example in Figure 1, the user terminal 4 may also implement some or all of the sensor gro