Tooth profile generation method of involute and cycloid combined tooth profile
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Year of Publication 04.11.2022
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Year of Publication 04.11.2022
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Collecting device for residual cement in woven empty bag
GONG CHENGPING, ZHAO CHAN, LI RUXIA, GUO WEI, ZHAO YAPENG, NIU CHENYU, LI HONGBIAO, HAN GUOZHONG, JIA YAN
Year of Publication 09.04.2024
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Year of Publication 09.04.2024
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Intelligent dehumidification device for mining explosion-proof switch
REN NING, WANG JUNMING, YANG PU, SHI HONGBIN, NIU CHENYU, WANG CHAO, GUO ZHENKAI, LI JIANG, LI HUIJIE, SHI LI
Year of Publication 29.09.2023
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Year of Publication 29.09.2023
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Valve rod of well drilling throttle valve
KUANG ZHANFENG, WANG ZHONGJU, LIANG CHANGYOU, WEI HENGBIAO, MA JUNWEI, WEI ZIQIANG, WU XIANYUE, NIU CHENYU, LIU HUANDONG, WANG HAOPENG, HAO SHILI
Year of Publication 05.05.2023
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Year of Publication 05.05.2023
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Pipeline lifting device
LI WENDI, LIU CHONG, LI RONGRONG, WU HAIWEN, NIU CHENYU, WANG QIANG, ZHANG QINGSHAN, GUO RUIRUI, YANG ZHEN
Year of Publication 14.04.2023
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Year of Publication 14.04.2023
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Manual-hydraulic double-control cylinder type throttle valve
LI ZHANGWEI, WANG ZHONGJU, LIU MINGQIANG, WEI ZIQIANG, NIU CHENYU, CUI LIFEN, LI QINGYU
Year of Publication 23.06.2020
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Year of Publication 23.06.2020
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High-pressure well drilling throttling valve
LIANG CHANGYOU, WEI HENGBIAO, MA JUNWEI, WEI ZIQIANG, NIU CHENYU, NIU YONGCHUN, LIU HUANDONG, YANG QINGCHAO
Year of Publication 22.11.2019
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Year of Publication 22.11.2019
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Pressure self-sealing leakage-stopping gate valve structure
ZHANG SHAOWEN, LIANG CHANGYOU, WEI HENGBIAO, MA JUNWEI, WEI ZIQIANG, NIU CHENYU, NIU YONGCHUN, YANG JING
Year of Publication 25.10.2019
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Year of Publication 25.10.2019
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