Adjustable multifunctional wellhead conveying device von LIU YUHANG, SUN JUN, XING LUOCI, ZENG LIGUI, ZHAO HONGXUE, ZHU SHA, WANG TIEQIANG, FAN LIYANG, MENG XIANGXU, SHENG ZONGGANG, NI PEIYONG, LIU WEI, ZHUANG NA, LI HONGBO, XU XIAO, SUN WEI, BAI JINYU, ZHU SHIWEI, FENG LI, HUANG LILI, MA LICHEN, LIU YUANWEI, LIU HUAI, LIU YUNONG, YANG FALEI, FAN JUN, YANG HAOPING, SUN SHAOBIN, LIU YONGWEI

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Roller path oscillating tooth torque increasing device von LIU YUHANG, SUN JUN, XING LUOCI, ZENG LIGUI, ZHAO HONGXUE, ZHU SHA, WANG TIEQIANG, FAN LIYANG, MENG XIANGXU, SHENG ZONGGANG, NI PEIYONG, LIU WEI, ZHUANG NA, LI HONGBO, XU XIAO, SUN WEI, BAI JINYU, ZHU SHIWEI, FENG LI, HUANG LILI, MA LICHEN, LIU YUANWEI, LIU YUNONG, YANG FALEI, FAN JUN, YANG HAOPING, SUN SHAOBIN, LIU YONGWEI

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Rolling way movable tooth torque increasing device von LIU YUHANG, SUN JUN, XING LUOCI, ZENG LIGUI, ZHAO HONGXUE, ZHU SHA, WANG TIEQIANG, FAN LIYANG, MENG XIANGXU, SHENG ZONGGANG, NI PEIYONG, LIU WEI, ZHUANG NA, LI HONGBO, XU XIAO, SUN WEI, BAI JINYU, ZHU SHIWEI, FENG LI, HUANG LILI, MA LICHEN, LIU YUANWEI, LIU YUNONG, YANG FALEI, FAN JUN, YANG HAOPING, SUN SHAOBIN, LIU YONGWEI

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Conveying device capable of adjusting multifunctional well mouth von LIU YUHANG, SUN JUN, XING LUOCI, ZENG LIGUI, ZHAO HONGXUE, ZHU SHA, WANG TIEQIANG, FAN LIYANG, MENG XIANGXU, SHENG ZONGGANG, NI PEIYONG, LIU WEI, ZHUANG NA, LI HONGBO, XU XIAO, SUN WEI, BAI JINYU, ZHU SHIWEI, FENG LI, HUANG LILI, MA LICHEN, LIU YUANWEI, LIU HUAI, LIU YUNONG, YANG FALEI, FAN JUN, YANG HAOPING, SUN SHAOBIN, LIU YONGWEI

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