93
Mobile Crane Load Test Inspection
General
As a worldwide crane manufacturer,
Load King
Cranes does not recommend carrying out a regular
overload test on mobile cranes�
An overload test after every change of location or crane reconfiguration is not a reliable and safe
inspection method and can cause premature material fatigue�
In some countries, national laws require overload tests e�g� in accordance with information from the
crane manufacturer�
Every mobile crane is subjected to a load test by the manufacturer within a final acceptance procedure
before delivery� These tests are carried out with test loads in different configurations in accordance with
the scenarios with the lowest safety reserves in relation to mechanical strength and stability of the crane�
This includes an overload test with defined conditions and standards which can be applied accordingly�
Further acceptance tests with overloads during the cranes working life must only be carried out after
modifications or repairs of load-bearing components or after an extensive overhaul� In some countries,
national regulations may require tests with overload and/or overload tests before carrying out hoist work
after any change to the crane configuration�
The calculation of the load-bearing structure of mobile cranes satisfies all applicable international
standards (EN, ISO, FEM, etc�) and does not provide for continuous operation� The cranes therefore
have a service life which is defined by the permitted number of working cycles� Any overloading of the
crane can have a negative effect and leads to a reduction in the cranes service life� This can become a
critical problem if the crane is tested with overload before every hoist operation (e�g� when building a
wind farm with 80 to 100 wind turbines at one location within a few weeks)�
Load King
Cranes strictly prohibits operators to overload any crane� Safety equipment such as load
limit devices prevent overloads being raised; the corresponding bridging / override switch is only
provided for emergency situations or when the load limiter fails (as determined in the operating
instructions)�
Load and Overload Test
As the manufacturer,
Load King
Cranes does not recommend using the bridging / override switch
regularly for overload tests and generally advises against regular overload tests - even including tests
during which the test load is attached via external equipment without activating the bridging / override
switch�
Decreased service life due to regular overload tests.
As a manufacturer, Load King aims to avoid overload tests, as such tests decrease
the service life of the cranes�
The following aspects must also be taken into consideration from the viewpoint of the user / operator:
Содержание 35-127 M
Страница 1: ...OPERATORS MANUAL LOAD KING 35 127 M C1046093 REV A FEBRUARY 09 2022...
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Страница 63: ...63 Description Of Machine and Controls Operator Controls 5 3 2 4 8 7 1 9 10 6...
Страница 79: ...79 REPAIRS ADJUSTMENTS REMARKS ITEM REQUIREMENT DATE...
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Страница 109: ...109 Boom Angle Placards CAUTION Do not extend jib into this area unless boom is fully retracted...
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Страница 131: ...131 35 127 M Master Lube Chart 1 2 5 11 12 3 4 6 8 9 7...
Страница 132: ...132 35 127 M Maintenance...
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Страница 201: ...201 Repairs Adjustments Remarks Log ITEM REQUIREMENT DATE...
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Страница 209: ...209 Torque Specs SAE Metric...
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Страница 213: ...Notes...
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