Yale RPYS-1215 Originalbetriebsanleitung Seite 13

Operating Instructions for
Hydraulic Test Rig 12 tons Model:
Technical Datas:
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Test Rig Model
• max. test load
• stroke
• max. pressure
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Hydraulic Cylinder Model :
• capacity at 400 bar
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Hand Pump Model
• operating pressure set to :
• displacement, 1. stage
displacement, 2. stage
• reservoir
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1. Application
The Test Rig is used for functional testing of hoisting,
tentioning and pulling equipment, after repair or annual
inspection, as required by the local safety authorities.
The Test Rig is not a measuring device.
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2. Two possible test procedures:
2.1 The test load is produced by the hoist to be tested
acting against the advanced hydraulic cylinder.
The load applied can be determined by reading the
pressure on the gauge and cross-referencing to the
pressure chart.
2.2 The test load is proced by the cylinder (and pump)
acting against the tensioned hoist.
The load applied can also be determined by reading
the pressure on the gauge and cross-refering to the
pressure chart.
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3. Generation of the test load
The test force is generated by the hydraulic cylinder.
A high tensile threaded bar which is inserted through
the hollow cylinder, transferes the pulling force of the
hoist into a pushing force, which acts upon the cylinder
piston.
The oil pressure which is produced by the hydraulic
cylinder can be read off the pressure gauges and
be converted into a force by using the pressure chart.
The oil pressure can be adjusted at the pressure relief
valve, thus restricting the applied load.
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4. Testing the pulling force of the hoist
4.1 Adjusting the hydraulic components:
The hydraulic cylinder must be advances to its
maximum stroke end, when the maximum stroke is
reached. The pressure relief valve must be adjusted
to the maximum possible pressure, whilst pumping
the hand lever of hand pump e.g.:
If a 5 ton hoist is to be tested at the working load limit
(i.e...5 tons), the hydraulic system has to be adjusted
to 165 bar.
If the unit is tested with 25 % overload, the system has
to be adjusted to 206 bar.
: RPYS - 1215
: 120 kN (12 tonnes)
: 150 mm
: 400 bar
YCS - 21/150
: 120 kN (12 tonnes)
: HPS - 2/0,7 A
400 bar
: 11,0 cm
3
: 2,0 cm
3
: 0,7 l
RPYS-1215
4.2 Testing of the hoist
4.3 The hoist has to be fixed into shackles of the test rig.
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Attention:
The red ring-loop can only be loaded with a
maximum of 5 tons.
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4.4 The chain or rope must be tensioned.
4.5 The hoist then must be operated, when a pulling force
is effected which can be read off the pressure gauge
in form of an operating pressure.
Taking the example, the operating pressure will rise
to 165 bar, corresponding to a load of 5 tons.
4.6 By further operation of the hoist, no higher operating
pressure can be reached because the pressurized oil
will be fed back to the reservoir via the pressure relief
valve.
During the test, the hoist will retract the piston into the
cylinder, allowing functional test of all components.
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2
3
1
(1) Hand pump
(2) Pressure gauge
Pressure gauge
(3) Pressure set valve
(4) Relieve valve (hand wheel)
(5) Shut-off valve
(6) Coupler halfe (female)
6
5
4
HPS-2/0,7A
GGY-1005
GGY-1003
VPR-1
VHM-2
CFY-10-10
13