我队于1977年为钻井队研制了一套游车、井深指示仪。这种指示仪安装在钻台上紧靠指重表的位置。当游车起到预定的极限高度时,指示仪在指示游车高度的同时,还发出声响和灯光报警讯号,司钻据此即可刹车。加上自动刹车的配合,就能有效地防止游车顶碰天车事故的发生。1978年3～5月,指示仪先后在1829队和6013队进行了现场试验,使用效果良好,深受现场欢迎。 Our team developed a set of trains and well depth indicators for the drilling crew in 1977. This indicator is mounted on the rig floor close to the finger rest position. When the coach reaches a predetermined limit altitude, the indicator, while indicating the height of the coach, also emits a sound and light alarm signal, whereby the driller can brake. Coupled with the automatic brake with, you can effectively prevent the roof hit the sky car accident occurred. March to May 1978, the indicator has in the 1829 team and 6013 team conducted a field test, the use of good results, welcomed by the scene.