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純電、電液混合折彎機(jī)：純電技術(shù)的妥協(xié)還是下一代過渡方案
針對大噸位折彎（≥300噸）場景下純電設(shè)備功率不足的瓶頸，電液混合折彎機(jī)成為折中選擇。其創(chuàng)新點(diǎn)在于“伺服電機(jī)+蓄能器”協(xié)同驅(qū)動：低負(fù)載階段（板材厚度<5mm）由伺服電機(jī)直驅(qū)實(shí)現(xiàn)零排放；高負(fù)載階段（厚度≥8mm）啟動液壓蓄能器輔助供能，峰值壓力可達(dá)35MPa。隴博智能科技有限公司***推出的Hybrid-Bend 1250機(jī)型，通過智能負(fù)載分配系統(tǒng)，使綜合能耗較純液壓機(jī)型降低40%，同時保留液壓系統(tǒng)的穩(wěn)定性（重復(fù)定位誤差±0.02mm）。市場數(shù)據(jù)顯示，國內(nèi)電液混合機(jī)型銷量占比達(dá)28%，主要應(yīng)用于船舶甲板、風(fēng)電塔筒等重型結(jié)構(gòu)件加工。爭議點(diǎn)在于環(huán)保性——盡管能耗下降，但液壓單元仍需礦物油介質(zhì)，歐盟CE認(rèn)證已要求20年后新款混合機(jī)型必須配備油液回收裝置。
In response to the bottleneck of insufficient power of pure electric equipment in the large-tonnage bending (≥300 tons) scenario, the electro-hydraulic hybrid bending machine has become a compromise choice. Its innovation lies in the "servo motor + accumulator" collaborative drive: in the low-load stage (sheet thickness < 5mm), the servo motor directly drives to achieve zero emissions; in the high-load stage (thickness ≥ 8mm), the hydraulic accumulator is activated to assist in energy supply, with a peak pressure of up to 35 MPa. The latest Hybrid-Bend 1250 model launched by Longbo Intelligent Technology Co., Ltd. uses an intelligent load distribution system to reduce the overall energy consumption by 40% compared to pure hydraulic models, while maintaining the stability of the hydraulic system (repetitive positioning error ± 0.02mm). Market data shows that the sales share of electro-hydraulic hybrid models in China has reached 28%, mainly used for processing heavy structural components such as ship decks and wind turbine towers. The controversy lies in environmental friendliness - although energy consumption has decreased, the hydraulic unit still requires mineral oil medium. The EU CE certification has required that new hybrid models must be equipped with an oil recovery device after 20 years.
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