General Overhead Crane

General Overhead Crane

First, the general bridge crane: 1. This type of crane is suitable for use in various general environmental workshops. It is a common type of bridge crane for the transportation of various items. According to different utilization levels and load status, it can be divided into four working levels: A3, A5, A6, and A7; 2, divided into two kinds of air operations and ground operations, mostly empty operations. The entrance direction of the driver's cab platform is divided into three types: side entrance, end entrance and top entrance; the driver's cab can be installed at the left end or the right end; 3, the car conduction can be a safe sliding line, but also can be angle steel sliding line. The sliding line can be installed on the same side as the driver's cab or on the opposite side; 4. The design, manufacture and test of the crane comply with the provisions of GB/T14405-2011 "Universal Bridge Crane" and GB/T3811-2008 "Crane Design Specification"; 5, production qualification: QD type 320t and below, QE type 400t and below, QN type 10t and below, QG type 50t and below, QDX type 50t and below, QZ type 20t and below

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First, the general bridge crane:

1. This type of crane is suitable for use in various general environmental workshops. It is a common type of bridge crane for the transportation of various items. According to different utilization levels and load status, it can be divided into four working levels: A3, A5, A6, and A7;

2, divided into two kinds of air operations and ground operations, mostly empty operations. The entrance direction of the driver's cab platform is divided into three types: side entrance, end entrance and top entrance; the driver's cab can be installed at the left end or the right end;

3, the car conduction can be a safe sliding line, but also can be angle steel sliding line. The sliding line can be installed on the same side as the driver's cab or on the opposite side;

4. The design, manufacture and test of the crane comply with the provisions of GB/T14405-2011 "Universal Bridge Crane" and GB/T3811-2008 "Crane Design Specification";

5, production qualification: QD type 320t and below, QE type 400t and below, QN type 10t and below, QG type 50t and below, QDX type 50t and below, QZ type 20t and below


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The general bridge crane Welding process

1) The main steel structure (main beam, end beam) materials are all Q235-B, the materials used have material reports and corresponding certificates of conformity.

2) The manufacture, welding and inspection of steel structures are carried out in accordance with national standards. The important force butt welds adopt double-sided groove welding process, and visual inspection and non-destructive testing are carried out according to regulations. All welders hold corresponding grade certificates.

3) All the main girder of the crane adopts the whole board without docking process, eliminating the butt weld of the main beam steel plate and eliminating the hidden danger of the butt welding of the steel plate. (Steel butt welding is the most important welding, and it is the most dangerous part)

4) All the plates are automatically cut by CNC cutting machine, and the main beam crown is preset to avoid the problem of the traditional fire-baked main beam arching.

5) The surface of the steel is shot blasted, and the surface roughness is hit to the Sa2.5 level in GB8923 “Registration and Descaling Degree of Steel Surface Treatment before Painting” to improve the adhesion of the paint and not to remove the paint to ensure the single beam crane. Long-term beauty

6) The longitudinal girth weld of the main beam is ambushed by domestic advanced automatic special plane, which is beautiful in appearance and ensures the welding quality.

7) The beam of the cart is made of rectangular tube. It has no splicing and no weld seams. It has beautiful appearance and is durable.

8) The wheel installation is all boring, so that the wheel tread is not at the same level and the wheel running accuracy is improved.

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Technical data for General Overhead Crane:

Lifting capacity(t)5-50/1075/20-100/20125/32-250/50300/40-350/75400/80-450/80
Span(m)10.5-31.513.5-31.513-3117, 2221, 20.8
Crane travel A3-A517.7-91.9
A6-A717.7-103
Lifting speed   (m/min)Main hookA3-A53.9-11.30.84-8.4
A6-A74.9-15.60.9-10
Aux hook4.78-15.6
Lifting Height (m)Main hook12,16,20,22,24,25,28,30,32
Aux hook14,16,18,22,26,30,32,33,40
Travesing speed (m/min)
5-44.6
Working classA3, A5, A6, A7 (FEM 1Am-4m)
Power380V 50Hz three-phase

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