In
order to make the bearing alloy well with the spherical tile body, the
dovetail groove should be processed on the sliding bush body of the
spherical tile, and the dovetail grooves should be criss-crossed. The
included bronze sleeve can not be smaller than 90 degrees. Dovetail spacing is generally about 100 ~ 150mm. So can be used as milling equipment. In addition, the pre-cast surface of the spherical tile body should be
processed into a rough surface, and some drilled holes with 8-10 mm
depths and 10-15 mm depths in the dovetail groove or table.
The bearing alloy layer determines the service life
Cast
bearing alloy layer can not be too thick (excluding the thickness of
the pouring into the trench), because the aluminum-based ball retainer
ring will weaken the bearing alloy stiffness; nor too thin, because the
mill in operation inevitably wear If the bearing alloy layer is thin, the service life of the bearing bush will be shortened. Bearing alloy layer thickness is generally 11 ~ 13mm. In order to make the lubricating oil smoothly enter the oil film
between the spherical shroud and the journal, both sides of the shingle
lining should be processed into a guide groove of a certain depth and
length.
In
order to prevent the bearing bush from being carried out by the hollow
shaft, the bearing seat is provided with an over-movement limiting
mechanism (briquetting or pin). Limit agencies must ensure that the bearing can rotate freely can not be taken out by the hollow shaft. This kind of structure can prevent the bearing shell from being taken out and can rotate freely. Can also play the role of the above, but also easy to check. Both
of these structures, while preventing the bushings from coming out,
limit the free rotation of the bush due to its inability to adjust and
check the clearance. When working, pay attention to these issues. As a result of the burning of tiles in actual production, this structure is undesirable.
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