Installation
Reference of Marine Hydraulic Winch
Installation
Precautions
Before
assembly, you must be familiar with the structure of each part of the winch to
prevent wrong installation and missing installation. When assembling, pay
attention to the following matters: all parts need to be cleaned, and iron
filings and other stolen goods should not be brought in. During the assembly
process, lubricating oil should be applied to all running parts and rolling
bearings at any time.
Installation
Conditions
1.
The winch should be a qualified product that has been checked and put into storage
by the quality inspection department of the factory.
2.
Before the winch is loaded into the ship, there should be random materials such
as the manufacturer’s factory certificate, ship inspection certificate and
operation manual.
3.
Under normal circumstances, the hull in the winch installation area should be
installed after the welding and calibration work is completed.
4.
The installation drawing of the winch and the drawing of the winch base.
5.
Principles, techniques and requirements for the installation of marine
auxiliary machinery.
Installation Process
1.
The positioning of the base of the marine hydraulic winch from the centerline
of the ship, the frame number position and the height from the midline of the
deck must meet the requirements of the base drawing.
2.
The installation and inspection of the base of the marine hydraulic winch is
qualified.
3.
When using a steel backing plate, the plane of the base fixing backing plate
should be processed first, the flatness is ≤2mm, the surface
roughness is Ra3.2, and the outward slope is 1:100.
4.
After installing the marine hydraulic winch, use the hanging wire method or the
laser method to confirm the horizontal axis of the marine hydraulic winch drum,
the tolerance is 3mm/m, the height and the distance from the midship position
are ±5mm, and the inspection is qualified.
5.
Whisk with steel backing plate.
5.1
Measure the distance between the flat surface of the base fixing pad at each
screw hole and the fixing pad at the bottom of the common base. The adjustment
pads at each point were prepared respectively, and the surface roughness was
Ra3.2.
a) No
less than 2~3 contact points per 25mm×25mm of contact surface;
b)
Use a 0.10 feeler gauge to partially insert the depth of not more than 10mm;
c)
Check the contact ratio between gaskets by colouring method ≥ 50%;
d)
The thickness of the steel backing plate shall not be less than 12mm;
e)
The thickness of the cast iron backing plate shall not be less than 18mm.
5.2
After the backing plate is qualified for inspection, spot welding the
adjustment backing plate and the base fixing backing plate at the part that
needs to be reamed, and drills holes according to the position of the anchor
bolts of the common base of the winch, leaving a reaming allowance of 2mm.
5.3
The winch, adjusting pad, and hull base are equipped with reaming holes.
5.4
Prepare reaming bolts. Double nuts are used to fasten and prevent loosening.
Leave a margin of 5mm~10mm for the length of the bolt.
5.5
Prepare the stop wedge pad according to the requirements of the drawings, and
the surface roughness of its mating surface is Ra3.2.
a)
Its contact surface is not less than 3 points per 25mmX25mm;
b)
Use a 0.05 feeler gauge to partially insert the depth of not more than 10mm;
c)
Check the wedge-shaped gasket contact ratio ≥ 60 ~ 70% by coloring method;
d)
The contact slope between the wedge-shaped gaskets is 1:50;
e)
After the adjustment is completed, the wedge-shaped gaskets are fixed by spot
welding.
6.
Epoxy resin casting pad.
a)
The common base plane of the winch and the base panel casting backing plate is
cleaned with volatile organic solvents such as carbon tetrachloride, and there
should be no grease, oil, rust and peeling paint on the contact surface of the
backing plate;
b)
When the epoxy resin pouring backing plate is poured, the screw holes of the
winch and the base backing plate are inserted through the wooden plug (or foam
pipe strip), and a layer of release agent is applied around the winch, the base
backing plate hole and the wooden plug. , easy to pull out the cork;
c)
Under the guidance of professional service personnel, carry out the backing
plate and sample pouring;
d)
After the casting is completed and the backing plate is cured, the hardness of
the test plate is measured, and the hardness should be greater than 35 Barcol
hardness;
e)
Tighten the tightening bolts according to the calculated tightening torque, and
the compression of the backing plate should be less than 1/1000 of the
thickness of the backing plate.
7.
Prepare copper gaskets. Before the winch fixing bolts are tightened, check that
the gap between the winch base and the base fixing pad is less than 0.5mm, and
no gaskets are allowed; when it is greater than 0.5mm, it is allowed to have no
more than 3 thin copper gaskets, and it is not allowed Use a half sheet of
spacers.
