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WKHB型徽机控制绞车后备保护装置于1987年11月29日通过河北煤管局组织的技术鉴定。该装置是由邢台矿务局机电处根据煤炭部<86>煤生字第438号文
WKHB-type machine control Winch backup protection device on November 29, 1987 through the Hebei Coal Administration organized the technical appraisal. The device is from Xingtai Mining Bureau Electrical and Mechanical Services Department under the Ministry of Coal <86> Coal Health word No. 438