The invention discloses a power overhaul station type sliding chair which structurally comprises locking screws, support racks, connecting pulleys, a fixing plate, uniform speed fixing mechanisms, hooks, a standing plate and metallic iron racks, wherein the uniform speed fixing mechanisms are provided with fixed driving mechanisms, friction speed reduction mechanisms, stress fixing mechanisms, mechanical linkage mechanisms, screw rod transmission mechanisms, moving adjustment mechanisms, triggering starting mechanisms and outer shells. The power overhaul station type sliding chair has the beneficial effects that due to adoption of the uniform speed fixing mechanisms, the moving speed of the sliding chair on a high voltage line can be reduced by pressing down the mechanisms by an operator when finding that a part is broken and needs to be repaired, body damage can be avoided since the sliding chair can be manually grasped by the operator after the moving speed is reduced, the sliding chair can be fixed when repairing is carried out by the operator, a sliding phenomenon can be avoided, and restriction can be released after repairing is completed by the operator.