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CZZ-700型凿岩台车在无底柱分段崩落采矿法中钻凿各种垂直中深孔得到广泛的应用。可是,它的推进力不够,尤其是在打10米以上的深孔,钻凿速度显著降低,打一根钎杆(1.1米)需要十多分钟,超过15米深的孔打不进去,影响了台效和深孔质量。该设备推进部分是采用丝杠推进装置,要求推力600～800公斤。原设计推进风马达为TM1B-1型,输出功率为1马力。实际上只有0.7～0.8马力左右,若是有磨损,间隙大或风压不足,输出功率更低。
CZZ-700 Drilling Rigs are widely used to drill various vertical middle-deep holes in the subsea-free subsidence mining method. However, its impetus is not enough, especially in the deep hole of 10 meters or more. The drilling speed is significantly reduced. It takes more than 10 minutes to drill a rod (1.1 meters), and the hole beyond 15 meters can not be hit, affecting The Taiwan effect and deep hole quality. The advancement of the device is the use of screw propulsion device, requiring thrust 600 ~ 800 kg. The original design to promote the wind for the TM1B-1 type, the output power of 1 horsepower. In fact, only about 0.7 to 0.8 horsepower, if there is wear and tear, large gap or lack of wind pressure, the output power is lower.