FIELD: machine building.
SUBSTANCE: end lock consists of hollow case and of flap cover. The cover is pressed to the case by means of bayonet connection contact surfaces of which are made along screw line. The cover is secured on a slip lever on a ball bearing. The cover turns around axis due to action of a removable key-pinion mounted on axes secured on the case. The key-pinion interacts with a tooth sector attached to the cover and has two working sections facilitating turn of the cover in two stages. A holder tied with an outlet tap blocks turn of the cover. Packing in a groove of the case facilitates pressure tightness.
EFFECT: safe operation of lock owing to turn lockout of cover, to ledges on bayonet lugs of cover facilitating final pressure release and to design of key-pinion projecting out of cavity locking working substance thus allowing operator to be beyond trajectory of flap cover transfer.
3 cl, 7 dwg
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