钻孔机的进给单位.docVIP

外文 A FEED UNIT FOR DRILLING MACHINES N. N. Esin and ~. G. Chernilov UDC 622.233.056 The feed units of drilling machines feed the drill mechanism,drill rod, and bit towards the face during drilling, and also raise and lower the drill rod. 钻孔机的进料单元饲料朝向脸钻头机制，钻杆，和位在钻井过程中，也提高和降低的钻杆。 Mechanical feed units with drive from a pneumatic motor [1] are small and can develop large feed thrusts.However,they have certain drawbacks: the feed velocity is low, which increases the time required for auxiliary operations; the apparatus is complicated and insufficiently reliable in use; and the pheumatic motor is noisy. Pneumatic piston feed units [2] are simple in design and reliable in use, and give elasticity of the feed, reducing wear on the bit and permitting an increase in the productivity of drilling. However, they are large, because the thrust developed depends on the area of the pL~ton which is acted on by compressed air at a comparatively low pressure of 5-6 kg/cm 2. Nevertheless, the full rated feed thrust is quite rarely used (for example, in the last few meters of a deep borehole). 从气动电机的驱动机械的进料单元[1]是小型和发展大型饲料thrusts.However ，它们有一定的缺点：进料速度是低的，这增加了用于辅助操作所需的时间的装置是复杂的，不够可靠在使用和的pheumatic马达是喧闹的。气动活塞进料单元[2 ]的设计是简单的和可靠的使用中，并且给进料的弹性，对位减少磨损，并允许在钻井的生产率增加。但是，它们是大的，因为开发的推力取决于是在比较低的压力为5-6公斤/厘米2的压缩空气作用在其上的区域上的皮升（pL） ?吨。然而，全额定进给推力相当罕见（例如，在过去数米的深钻孔） 。 With the aim of improving the operational qualities of drilling machines, we have developed a new type of pneumatic piston feed unit. Its essential feature is that the air pressure in the feed cylinder can be several times greater than that in the air mains. This is achieved by means of a pressure converter consisting of several pistons and cylinders in series. 随着钻孔机的执行性能的改善的目的，我们已经开发了一种新类型的气动活塞进给单元。其基本特点是，在进给气缸的空气压力比空气中的电源可以是大几倍。这是通过由几个串联的活塞和气缸的压力转换器的装置。 Figure 1 shows a schematic diagram of the feed unit. The working parts comprise feed cylinder 1 with piston 9 and rod 3. The pressure co