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为了减轻工人的体力劳动和提高刮削的工作效率,我们设计了一种风动刮刀,用来进行粗刮工作。刮刀的结构如附图所示。压缩空气从管接头25的 a 孔可以进入刮刀的气缸内。不工作时,弹簧22推动活门26把气孔 a 堵住;工作时,用手指按住按钮27,压缩空气即由 a 孔进入管道 b 中。压缩空气经过变向阀17的环形槽进入气缸10的后部,推动活塞连杆3向前移动;当活塞连杆3上的皮碗13向前移动超过 c 孔时,压缩空气
In order to reduce manual labor and improve scraping efficiency, we designed a pneumatic scraper blade for rough scraping work. The structure of the scraper is shown in the attached drawing. The compressed air from the a-hole of the nipple 25 can enter the scraper cylinder. When not in use, the spring 22 pushes the shutter 26 to block the air hole a; during operation, press the button 27 with the finger, and the compressed air enters the pipe b through the hole a. The compressed air enters the rear of the cylinder 10 through the annular groove of the directional valve 17 to push the piston rod 3 forward; when the cup 13 on the piston rod 3 moves forward beyond the c-hole, the compressed air