| 摘要 |
FIELD: process engineering.SUBSTANCE: set of invention relates to woodworking, particularly, to chain saws. Chain saw comprises motor 1 with drive sprocket 2 fitted on motor shaft extension 3. Said sprocket is engaged with clutch 4 of saw shaft 5 running in bearing 6 fitted in fixed housing 7 composed of the flange. Said fixed housing is connected by flange joint 8 with ring 9 with top hole 10 to accommodated branch pipe 11. Ring second end is connected by flange 12 with motor housing. Saw shaft bearing inner bore diameter has ledge 13 to press the bearing against said fixed housing so that bearing OD part extends beyond the fixed housing end part 15. Fixed case 16 of rotary lever 17 is fitted on said OD part. Chain saw drive sprocket 29 with pressure bush is fitted on saw shaft extension. Circular part of rotary lever is arranged on the side of bearing 28 while bearing ID surface is located at cylindrical part 929 of fixed housing small OD. Groove to receive locating ring 30 is made on the side of flange cylindrical part to lock cylindrical support 31 and rotary lever.EFFECT: higher reliability, simplified design.2 cl, 3 dwg |
