SU101912A1 - Self-sealing mechanical seal for rotating shafts, such as tractor side gears - Google Patents

Description

The invention relates to rotary shaft seals, in order to ensure reliable protection of workers, details of the transfer of oil in its crankcase from foreign substances.

Various designs of rotary shaft seals are known, made using diaphragms, rotating or self-emptying glands, labyrinths, and so on. devices.

However, most of the known seals of the end seals are either not reliable enough, or are structurally difficult, or, finally, based on the use of a siosob & in the connection of parts (pipe, copper soldering, etc.), which reduces the repair ability of the pilot.

The distinctive poloactive feature of the described invention is the cumulative combination of a rotating self-locking oil seal, a rotatable puck with springs, a diaphragm connecting the puck with the kirlus, and a protective labyrinth. This ensures the guaranteed value of the specific pressure of the end surface of the pressure ring on the felt (in the known designs, this specific pressure is affected by the uncertain value of the friction of the side surfaces of the felt ring on the fastening part) and reliable protection of the working parts of gears from .

FIG. 1 shows a cross section

sealing parts of the tractor’s onboard transmission; pas figs. 2 - seal option.

The main working elements of the seal are: a felt interlocking element (gland) (1), rotated together with a moving (rotating) part (A) of the mechanism; a non-rotating pressure washer (2) made of conventional steel or cast iron; the guiding tongue (3), which holds the washer (2) against rotation and provides it with an opportunity to move in the axial direction (there are several such fingers); the spring (4) (fig. 2), which presses the washer (2) to the felted assembly (1); the diaphragm (5) is made of oil-resistant rubber or a fabric-reinforced fabric, creating a seal between the Idaiba pressure belt (2) and the fixed part of the mechanism (B); lining (6), enclosing the diaphragm (5) to the thrust washer (2), and lining (7), - screwing the bolt (8) to the diaphragm (5) with the non-adjustable part of the mechanism (B). The plates together with the bottom face (5) form a labirnite that protects B1} a part of the mechanism from foreign matter from outside (dirt).

The design and fit of the diaphragm can be changed, for example, i) and the presence in the mechanism of the shoulder, recess, etc., by using a quick release method.

The described sealing scheme can be applied as for single, tag;

And for a face seal; to the latter m case, both parts are closed, they will be symmetric about the axis (l-.

P) with dmete and a about b about t with and and

C; shodzhi5Shoo seals for the rotating shaft, lEaiipiiMcp; neurash: a part of the body (corius), forming a protective labyrinth, in order to reliably protect the working parts of the neredach from iopadan of dirt, dust and mechanical ir-che-se.

FIG. 2 Shz,

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