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一种可用于煤柱回收和提高长壁顺槽安全性的行走式顶板支架,由美国Fletcher公司研制成功.该支架的突出特点是在支架底部增加了一套履带式行走机构.由Fletcher公司研制的行走式顶板支架有以下三大优点:1 提高回收率使用这种支架可以采出用现有技术和设备无法采出或不经济的煤炭.与传统的煤柱和千斤顶支撑不同,行走式支架可以重复使用,因此,既节约了资金,又增加了连续采煤机的采煤时间.2 操作简便可利用遥控装置,使其到位并升起四联杆顶梁支撑顶板,每台支架可提供600 t的支撑力.当采煤
A portable roof support that can be used for pillar recovery and longwall safety is developed by Fletcher, Inc. The outstanding feature of this support is the addition of a set of crawler travel mechanisms at the bottom of the support. Developed by Fletcher Of the walking roof support has the following three advantages: 1 to improve the recovery rate The use of this support can be produced using existing technologies and equipment can not be produced or uneconomical coal.Difficult with the traditional coal pillar and jack support, walking bracket Can be reused, saving both money and increased coal mining time for a continuous shearer.2 Easy to operate Remote control unit can be used to bring it in place and raise the quadrupole roof beam Support roof, each stand can provide 600 t support force when coal mining