Structures of three clew winches
The sailing rig of modern sailboats is characterized by the widespread use of manual mechanisms for selecting and locking running rigging gear. Most of the tackle is carried out in one fall, and steel and nylon cables are used mainly. Due to this, the length of the cables is significantly reduced, the crew's work with them is simplified, and most importantly, the reliability of the rigging is increased, since there are no hoists that can get tangled, and blocks that usually catch on weapon parts. Descriptions of tested cons are published below.three clew winches that can be used on both racing and cruising sailboats.
A lever winch with a handle at the base of the drum is very handy for getting sheets on small keel sailboats. At any time, two or three rope hoses can be thrown onto the drum (or thrown off it), while with old winches with a top handle it is quite difficult to cope with this operation alone. The winch consists of a textolite drum, in the upper and lower bases of which thrust rings are pressed, additionally tightened with three screws. The drum and the handle are put on an axis with a cover. The axis has a square at the bottom, which is included in the squarea hole in the base 8 so that the axle is stationary when the winch is in operation. Rotation of the entire winch is prevented by studs that fit into the appropriate sockets in the deck. Cams 5 are fixed on the handle and the cover of the winch, sliding along the cutouts of the stops in the rings 16 and 15. The lower cam ensures the working rotation of the drum when the handle is turned, the upper one stops the drum. Both cams must be turned in the same direction. In the position shown in the figure, the drum rotates clockwise.
The proposed design of the winch has been successfully used on racing sailboats for several years. In particular, the author successfully uses it on a Zvezdny class sailboat. A winch has a different design for getting staysail sheets on dinghies and catamarans, that is, on such ships on which the clew, tilting the boat, is at some distance from the winch and cannot use its handle. The winch drum, due to the friction of the staysail sheet against it, facilitates the work of the sailor. The winch is attached to the deck with two M5 X 35 screws.In the lower part of the textolite drum, a thrust ring is pressed and fixed with a screw, similar to that used in the winch discussed above.
Larger keelboats use gear winches with a handle below deck. Such a winch gives a power gain of approximately 30 times, which ensures operation without overvoltage in almost any wind. The cast silumin drum rotates freely on ball bearings on the axle. The base of the winch (also cast) is attached to the deck of the sailboat. A ring gear 7 with internal gearing (module 1.75 mm; number of teeth 66) is pressed into the drum, with which the shaft-gear 8 of the handle is connected (the number of teeth of the gear is 17). four sobaki, fixed to the base, rest against the teeth of the crown and stop the drum from turning in the opposite direction to the worker. The handle has a ratchet with a spring pin and can be rotated both full turn and any angle. On sailboats, usually two winches are installed for the starboard and port sides, in the opposite direction of rotation.