METHOD OF ASSEMBLY OF PERMANENT JOINTS OF HIGH- PRESSURE HOSES AND DEVICE FOR REALIZATION OF THIS METHOD Russian patent published in 2000 - IPC

FIELD: mechanical engineering; manufacture of hydraulic equipment; manufacture of high-pressure hoses. SUBSTANCE: method of assembly of permanent joint includes fitting the crimping sleeve on free end of hose, introducing the nipple into hole of hose of side of sleeve provided with locking and sealing grooves and placing the hose in crimping device followed by relative fastening of hose, sleeve and nipple. Nipple is inserted in hole of hose till its locking groove rests against flange of sleeve. Sleeve has taper outer surface extending from end of sleeve on side of flange as far as its cylindrical surface; inner surface of sleeve has section with circular fins. Then core is inserted into hole of nipple till its bead rests against end of nipple and sleeve is crimped radially in succession by means of cams of device; cylindrical surface is crimped first till its diameter is equal to outer diameter of flange; circular fins cut outer layer of hose rubber deforming load-bearing braiding and becoming deformed themselves; then flange is crimped and is introduced into locking groove where it is deformed forming the lock. Device proposed for realization of this method includes crimping holder having taper inner surface, cams fitted in this holder and engageable with it, core and motion and return mechanism. Device is provided with punch made in form of sleeve inside which core is secured; motion mechanism is made in form of hydraulic cylinder whose rod is connected with punch; punch is engageable with cams; crimping holder is fixed; return mechanism is made in form of springs and is mounted between cams and crimping holder. EFFECT: simplified construction; enhanced reliability of crimping the hose. 3 cl, 2 dwg