Intact bridge crane standards for general overhead cranes, other types of overhead cranes, can refer to the implementation. For
the use of overhead cranes soundness examination scoring method were
evaluated in the following table, the total score of 85 points or more,
and major projects are qualified equipment is intact.
Implement good standards, lifting equipment to ensure safe and reliable operation is very important.
|
No.
|
Classification
|
Check the contents of the
|
Stableford
|
|
1
|
Lifting capacity
(6 points)
|
Lifting
capacity should be designed within the scope of the approval from the
competent authorities or companies within the heavy-duty use, shall be
marked in a conspicuous place a crane lifting tonnage, equipment number,
etc.
|
3
|
|
Depending on the situation, do a load test every two years, and there are archives
|
3
|
||
|
2
|
Main beam
(5 points)
|
Under
the main beam deflection does not exceed the specified value, and
records available for inspection (under no-load condition girder
deflection ≤ L/1500 or nominal weight under the action of the main beam
deflection ≤ L/700, L is the span)
|
5
|
|
3
|
Operating system
(6 points)
|
The running part of operators and technical requirements, sensitive and reliable, complete the gear shift
|
4
|
|
Required to adjust large car sliding distance, so as to meet process requirements, compliance with safety rules
|
2
|
||
|
4
|
Walking and rail systems
(14 points)
|
Track straight seams two track potentiometer does not exceed 2 mm, flat connector, crimp firmly
|
4
|
|
Reducer, drive shafts, couplings parts intact, complete, smooth operation, no abnormal ran, shock, vibration, noise, loosening
|
2
|
||
|
Braking
device safe, reliable, good performance, there should be no abnormal
noise and loosening (except craft special requirements)
|
2
|
||
|
The
thickness of the brake shoe friction lining wear ≤ 2mm, and the rivet
head shall be exposed, brake wheel wear ≤ 2mm, small shaft and the new
shaft wear does not exceed 5% of the original diameter of the brake pad
friction wheel and the gap should be uniform, gate W ≤ 1mm opening
should
|
2
|
||
|
No serious eating road wheel phenomenon, there is good contact with the rails
|
4
|
||
|
5
|
Lifting device
(21 points)
|
When the drive ran without exception, shock, vibration, noise, loosening
|
5
|
|
*
When lifting the brake when braking at rated load sensitive and
reliable, Ayman al-wear friction lining thickness ≤ 2mm, and the rivet
head shall be exposed, and the new shaft wear small shaft does not
exceed 5% of the original diameter of the brake linings and friction
wheel The gap should be uniform pad, brake shoe opening should be ≤ 1mm
|
4
|
||
|
* Rope comply with the technical requirements
|
5
|
||
|
* Hooks, rings comply with the technical requirements
|
5
|
||
|
Pulley, reel in line with the technical requirements
|
2
|
||
|
6
|
Lubricating
(10 points)
|
Lubrication system is complete, the effect well, almost no oil leakage
|
10
|
|
7
|
Electrical and safety devices
(28 points)
|
Electrical installations complete, reliable (all parts components, parts run to meet the requirements)
|
5
|
|
Powered
trolley line should be straight, with bright colors and lights, cranes,
carts under the platform is not located in the supply line of the
ipsilateral slip, slip lines near the protective frame should be set
aside, there is alarm signal devices, etc.
|
2
|
||
|
Electric
main circuit and control circuit of the insulation resistance value ≥
0.5MΩ, rail and crane at any point on the ground resistance ≤ 4Ω, has a
protective ground or zero measure, one test per year during the dry
season, and there are records
|
6
|
||
|
* Safety devices, complete and reliable limit
|
10
|
||
|
Cab
or manipulate the switch should be installed at the emergency switch
off the power, fans, lighting, sound equipment and other power bribery
does not allow direct grounding, maintenance using portable lamp supply
voltage should be ≤ 36V, steering control system has to be zero
protection
|
5
|
||
|
8
|
Use and management
(10 points)
|
Equipment inside and outside clean, good paint, no rust
|
5
|
|
Complete technical file (file should include product certification, manual, repair and overhaul of records, etc.)
|
5
|
Note: * are major projects, such as the failure, the device was not in good condition
