FAULT DIAGNOSIS DEVICE, PUMP UNIT INCLUDING THE SAME AND FAULT DIAGNOSIS METHOD

To provide a fault diagnosis device for a swash plate pump which can improve accuracy for detecting backlash.SOLUTION: A fault diagnosis device for a swash plate pump includes: a history acquisition part for acquiring actual history data that indicates temporal change in suction pressure in a predet...

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Bibliographic Details
Main Authors KATO YOSHIMIKI, MASUDA TAKAYUKI, KURODA TADAHIKO, MATSUURA TAKESHI
Format Patent
LanguageEnglish
Japanese
Published 21.02.2019
Subjects
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
WEAPONS
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Summary:To provide a fault diagnosis device for a swash plate pump which can improve accuracy for detecting backlash.SOLUTION: A fault diagnosis device for a swash plate pump includes: a history acquisition part for acquiring actual history data that indicates temporal change in suction pressure in a predetermined period; and a failure detection part for detecting occurrence of backlash between a piston and a shoe based on the actual history data that is acquired by the history acquisition part.SELECTED DRAWING: Figure 1 【課題】 ガタの検出精度を向上させることができる斜板ポンプの故障診断装置を提供する。【解決手段】 斜板ポンプの故障診断装置は、所定の期間における吸入圧力の経時変化を示す実履歴データを取得する履歴取得部と、履歴取得部によって取得される実履歴データに基づいてピストンとシューとの間のガタの発生を検出する故障検出部とを備えている。【選択図】 図１
Bibliography:Application Number: JP20170146994