自移式破碎站回转制动结构的分析与改进

自移式破碎站是一种具备自行移动功能的露天矿破碎设备，为提高生产效率，其行走机构以上的部分相对行走机构可作整周回转运动，并可在任意位置停下并锁定在当前位置。露天矿现场工作环境恶劣，电铲卸料过程中难免与破碎站的料仓刮碰，导致破碎站回转机构驱动单元零部件发生损坏。回转机构在破碎站中处于关键结构位置，一旦回转机构的零部件损坏，不易维修和更换，直接影响破碎站的工作效率和使用寿命。针对出现的问题，提出采用新型的破碎站回转制动结构，该制动结构可对回转机构的运动可靠制动，并同时对驱动单元零部件起到保护作用，且该制动结构所需空间尺寸小，摩擦件磨损后易于更换。

Analysis and Improvement of Rotary Braking Structure in Self-moving Crushing Station

Self-moving crushing station is a kind of crushing apparatus in open-pit mine.In order to improve production efficiency，parts of relevant travelling device above its travelling mechanism can be rotated as a whole circle，and stopped in the optional position and locked in the present position.Because of the worse working environment，it is difficult to escape from touching the bin of the crushing station in discharge of excavator，which leads to the drive unit of the rotating mechanism in the crushing station damaged.Because rotary mechanism locates in the key structural position，when it is damaged，it is hard to maintain or change the unit.It would directly influence working efficiency and service life of crushing station.Facing with the issues appeared，a kind of solution which adopts the new braking structure is proposed.This braking structure is reliable for the movement of the rotating mechanism，and simultaneously has the protective function to the drive unit parts.Meanwhile，the braking structure needs small space，and the friction piece is easy to be replaced after worn.