Product introduction：
LH model Electric Hoist Double Girder Overhead Traveling Crane is a light duty lifting equipment, it is widely used in factories,plants,warehouse, workshop to lift goods or assemble machine,it is not frequently used in a day.
LH model Electric Hoist Double Girder Overhead Traveling Crane is composed with Girder frame, Crane traveling device, and trolley with lifting and moving device, festoon cable and electric control system. The control mode is pendent line control,remote wireless control,cabin control. The lifting unit is electric hoist. The working class is A3 or A4. There are paved rail for the trolley move on the main girder.
The crane girders are of welded girder construction. This result in lower dead weights with a high degree of vertical and horizontal rigidity and smaller wheel loads being transmitted to the crane runway.
Mechanical parts:
Double welding box girder, beam deflection with DIN/FEM standard
Steel Material: Chinese standard Q235B,Q345B, and Q355E
Manual brush painting,One alkyd iron red primer painting, two alkyd orange enamel finish painting
Epoxy zinc-rich primer painting for one bottoms and two sides of 120μm thick, to achieve a long lifespan, beautiful appearance and good luster.
The girder and end beam are connected together by high strength bolts to ensure the structure strength and precision of the whole machine.
The end beams are equipped with flat wheel or double rim wheels, anti-friction bearings, buffer blocks and derailment preventing plate.
Both sidesof all the steel plate of crane are pretreatedby pretreatment production line,Sand blasting– Primer spray–Primer drying. Eliminate the inner stress of steel plate, increase the adhesive force of the steel structure. Ensure the appearance and anti corrosion quality.
Safe system:
Weight overload protection device
Emergency stop system
Over current Protection, Short-circuit Protection
Phase sequence protection
Zero position protection, No-Voltage protection, convenient and simple operation.
Protective earth conductor is fitted as standard
Voltage lower protection system
Current overload protection system
High protection level IP44,IP54,IP55
Long and cross travel limit switch
Anti-falling protection of trolley and crane prevents from accidental falling
High quality long time bearing polyurethane materials buffer fixed at the end of trolley travelling and crane travelling to prevent over traveling
Safety hook latch used for avoiding the lifted material out off from the hook
Audible and visual alarm device to inform the person stay near by the travelling crane
Rain Cover for lifting mechanism of outdoor cranes, electric cabinet and driving mechanism
Technical parameters:
| Lifting weight(t) |
3 |
5 |
10 |
16 |
20 |
20/5 |
32/5 |
| Span(m) |
10.5~31.5 |
| Max Lifting height(m) |
Main Hook |
6~30 |
| Auxiliary Hook |
6~30 |
| Working class |
A3 A4 |
| Speed(m/min) |
Main Hoisting |
8,8/0.8 |
8,8/0.8 |
7,7/0.7 |
3.5,3.5/0.35 |
3.5,3.5/0.35 |
3.5,3.5/0.35 |
2.4,2.4/0.24 |
| Auxiliary Lifting |
\ |
\ |
\ |
\ |
\ |
8,8/0.8 |
8,8/0.8 |
| Trolley Cross Traveling |
20,2~20 |
| Crane Long Traveling |
30,3~30 |
| Motor Type |
Squirrel cage motor |
| Motor (Kw) |
Main Hoisting |
4.5 |
7.5 |
13 |
13 |
18.5 |
18.5 |
18.5 |
| Auxiliary Lifting |
\ |
\ |
\ |
\ |
\ |
7.5 |
7.5 |
| Trolley Cross Traveling |
2*0.4,2*0.8,2*1.5 |
| Crane Long Traveling |
2*0.8,2*1.5,2*2.2 |
| Control mode |
Pendent line control,Remote control,Cabin control |
| Recommended Rail model |
24kgs/m |
30kgs/m |
38kgs/m |
43kg/m or P50 |
| Power source |
|
3Ph A.C 50Hz 380V |
Design standard:
Crane design standard GB 3811.
General Purpose Overhead Crane design standard GB/T14405
Manufacturing and tolerances of rail installation GB/T10183.
Crane wheel standard:JBT 6392
Crane test specification and procedures GB/T5905.
Crane electric control equipment JB/T4315.
Important application wire rope GB8918.
Carbon structure steel GB/T700.
Low alloy high strength structure steel GB/T1591.
Welding joint radiographic inspection standard JB928.
Steel welding joint manual ultrasonic flaw detection way GB11345.
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