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哈威HAWE誤差消除對液控單向閥
2014-4-23 閱讀(281)
液控單向閥是液壓系統(tǒng)在機床*的組成部分。如果他們工作可靠故障液壓消費者的風險降低。用四種止回閥慕尼黑的HAWE HYDRAULIK SE現(xiàn)在提供根據(jù)安全標準DIN EN ISO13849-2:2003的誤差消除的證書有兩個錯誤的假設(shè)。
Pilot-operated check valves are indispensable components for hydraulic systems in machine tools. If they work reliable the risk of malfunctioning hydraulic consumers is reduced. With four types of check valves the Munich-based HAWE Hydraulik SE now offers an error elimination certificate for two error assumptions pursuant to the safety standard DIN EN ISO 13849-2:2003.
當評估對液壓功能，靜止機床制造商現(xiàn)在可以假設(shè)誤差消除的類型RH，DRH，RHC和RHCE的液控單向閥。本方適用于錯誤的假設(shè)根據(jù)ISO13849的附件C4：無輸入信號的起始位置，“不打烊”和“不*關(guān)閉”獨立變化。在實踐中，這意味著，例如，該閥控制用于加工中心的液壓工件夾持可顯著簡化了，因為附加的監(jiān)視功能被省略。
When assessing the risk to hydraulic functions, manufacturers of stationary machine tools can now assume error elimination for pilot-operated check valves of the types RH, DRH, RHC and RHCE. This applies to the error assumptions according to Annex C4 of ISO 13849: independent changing of the starting position without input signal, "Not Closing" and "Not Fully Closing". In practice this means for example that the valve control for hydraulic workpiece clamping in machining centers can be significantly simplified because additional monitoring functions are omitted.
按照DIN EN ISO13849標準的一臺機器的安全水平，必須進行評估。從HAWE HYDRAULIK證書，使計算的風險評估更容易，從而有助于降低開發(fā)費用，因為不必建造的結(jié)構(gòu)消除了上市的故障。
According to the DIN EN ISO 13849 standard the safety level of a machine must be assessed. The certificate from HAWE Hydraulik makes calculation the risk assessment easier and thereby helps reduce development expenses, as the structures for eliminating the listed faults need not be built.
要消除錯誤的假設(shè)，HAWE HYDRAULIK根據(jù)FMEA方法進行測試，并提出可能的故障及其對機器的安全性影響廣泛的分析。此外，該公司通過分析收到超過過去五年的回報故障原因進行了服務(wù)報告的統(tǒng)計評估。
To eliminate error assumptions, HAWE Hydraulik tested according to the FMEA method and made extensive analyses of possible faults and their impact on the machines' safety. In addition, the company conducted a statistical assessment of service reports by precisely analyzing the failure causes of the returns received over the last five years.
