SU598795A1 - Adjustable-pitch propeller - Google Patents

Description

(54)

CONTROLLED STEP SCREW SCREW

. .. - 1 - The invention relates to shipbuilding, and relates to propellers of adjustable pitch.

An adjustable pitch propeller is known, which contains blades that are rotatably mounted in the propeller hub, sliders, pin screws with a leash associated with a bolt-rod l.

However, this screw is complicated by design and has a low operational reliability.

The closest technical solution to the invention is the propeller of an adjustable pitch, which contains blades with com bows, pivotally mounted on the body with the Vernier steps of the BbQviH division, an adjusting nut and an external lock located in the body and interacting with the boom 2.

However, for such a screw are characteristic (separate rotation of each blade and the difficulty of fixation.

The purpose of the invention is simultaneous rotation, as well as fastening of all blades.

This is achieved by the fact that the screw is provided with a ring placed between the adjusting nut and the movable fixings, which have bevels that interact with the fixings made in the form of pins.

. . yafig 1 shows the proposed screw,

axial section; in fig. 2 a section 5 A-A of FIG. 1 and digging out under part of FIG. 3 is a sectional view in FIG. Iff in FIG. 4 shows the ring in front of FIG. 5 - side view of the ring.

The bandage includes a housing 1, blades 2

10 with nozzles 3, inserted drills 4 on case 1. In Kowrie 3, the blades 2 have a groove 5, normal to the axis of the blade 2. In drilling 6 of case 1 (the number of holes is twice

5 the number of blades of the screw) are inserted in fixing clamps made in the hinge of the pins 7 and 8j interacting with one end with the comms 3, and with the bevels 9 and 10 of the ring 11. put on

0 - on the back; housing 1.

The rear part of the housing 1 has HOiiHusic divisions J, 2 and a thread.13, which is fastened to the mounting nut 14. On this part of the housing, there are 5 grooves 15. On the threaded part

bodies 1 behind ring 11 are fitted with fricci ™ onna washer 16, metallic gnayb 17 with tendrils 18, which are included in pa-ea 15, and friction washer 19. Rowing lint through sleeve 20 and hub 21 Utility on shaft 2 of propeller, On k6nbUi4 1.1 there is a label 23. Sch8Me. “The pitch of the screw is unscrewed by the YYR Haiku 14. This reduces the coupling between the friction washer 16 and the ring 11. The ring 11 rotates, orienting the label 23 relative to dvPvPIL 12. The ring interacts with pins 7 and 8, i turn those, with the bottom of the 3 blades 2, changing the pitch of the blades 2 rowing go screw. Then tighten the nut 14. In this case, the washers 16, 17 and 19 through the ring 11 are pressed on the pins 7 and 8 R, all the details of the propeller screw are fixed. To remove the screw from the propeller shaft 22, the adjusting nut 14 is unscrewed. The proposed design of the screw allows changing the angle of rotation of the blade; With lx simultaneous fixation.

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Claims (2)

Fig. The formula of the invention Rowing BINT of an adjustable pitch, containing blades with a shaft; W, pivotally mounted on the case with vernier stepped divisions, an adjusting nut and movable locks placed in the case and interacting with combs, characterized in that, in order to simultaneously rotate as well as fix all the blades, it is equipped with a ring placed between the adjusting nut and movable locks, have bevels that interact with locks, made in the form of pins. Sources of information taken into account in the examination:. I. Copyright of the USSR 330068, M.KL% V 63 N 3/04, 30J1.70. 2. USSR author's certificate No. 488753, M.KL. B 63 N 3/12, 04.0673.