摘要：【中文】本发明公开了一种井下长距离供电装置，包括底座和支撑架，所述支撑架的底部固定有万向轮，所述支撑架的顶部固定有底座，所述底座的顶部从左至右依次安装有逆变箱和控制箱，所述底座的顶部位于逆变箱和控制箱的一侧安装有高频变压器；本发明还公开了一种井下长距离供电装置的使用方法；本发明的有益效果是：通过在支撑架上设计的支撑组件，通过螺杆带动抵板推进，使得抵板抵在主回路箱的底部，起到对主回路箱的支撑，减小主回路箱所受的负荷；通过在逆变箱的表面贯通开设相对分布的通孔，且逆变箱的前表面位于通孔的外侧设置防尘机构，有助于更好的利用防护网阻隔灰尘，并散热，也便于在防护网表面积灰时，将防护网取下进行清洁。 【EN】The invention discloses an underground long-distance power supply device which comprises a base and a support frame, wherein universal wheels are fixed at the bottom of the support frame, the base is fixed at the top of the support frame, an inverter box and a control box are sequentially installed at the top of the base from left to right, and a high-frequency transformer is installed at one side, located on the inverter box and the control box, of the top of the base; the invention also discloses a using method of the underground long-distance power supply device; the invention has the beneficial effects that: the support component designed on the support frame drives the abutting plate to advance through the screw rod, so that the abutting plate abuts against the bottom of the main loop box, the main loop box is supported, and the load borne by the main loop box is reduced; through link up the through-hole of seting up relative distribution on the surface at the contravariant case, and the front surface of contravariant case is located the outside of through-hole and sets up dustproof mechanism, helps better utilization protection network separation dust to the heat dissipation, also be convenient for when protection network surface deposition, take off the protection network and clean.