掘进机的截齿与截割头的连接采用焊接形式，焊接工艺比较复杂。
The connect form of cutting tooth and cutting header is welding, welding technics is complex.
论述了一种利用液力叉车作为进给动力，由电机驱动链锯式割刀作为工作头的小型立式割煤机的主要性能设计。
The paper introduces the main functional design of a kind of small cutting coal machine with hydraulic fork lift as feed power and chain-saw cutting knives driven by generator as working head.
基于单个截齿的受力模型，对掘进机截割头钻进工况载荷进行了计算机模拟，为截割头的结构设计和参数优化提供了理论依据。
Based on the mechanical model of single bit, drilling loads on the cutting head of tunneling machine are simulated by means of computer in this paper.
根据这种情况，对掘进机纵横两种截割头提出了一些改进，以此提高掘进机的性能，使得掘进机的工作效率更高，使用时更加灵活方便。
According to this situation the performance of the heading machine will be increased through making some improvement on the cutting heads and the heading machine will be more convenient and efficient.
根据这种情况，对掘进机纵横两种截割头提出了一些改进，以此提高掘进机的性能，使得掘进机的工作效率更高，使用时更加灵活方便。
According to this situation the performance of the heading machine will be increased through making some improvement on the cutting heads and the heading machine will be more convenient and efficient.
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