Overall structure sketch
Supply Scope
Dongqi mainly manufactures electric bridge cranes with lifting capacity of 5t-32t, span of 7.5m-31.5m, lifting height of 3m-30m, working class(A3、A4), also can design and manufacture according to requirements.
Applicable Scope & Working Conditions
It is applicable in the temperature of -25℃~+40℃, Humidity≤85%, Altitude below 1000m, Power is 3-phase 380v 50HZ(also can be customized according to customer's requirements)
Applications
- Matched using with electric hoists of CD1 model, MD1 model, etc
- Widely used in processing workshop,metallurgical assisting warehouse, storage, yard and power station.
- It is also used in textile and food industry instead of double-girder bridge crane.
- Banned to be used in inflammable, explosive corrosive medium environment
Structure & Feature
Mainly have bridge frame, trolley, crane travelling mechanism and electrical equipments.
Bridge
Consisted with main girder, end girder, walking board, column, testing cage, cabin and its platform.
Main Girder
- Double main girder, welded in box shape, The arch degrees comply with the national requirements.
- Steel material model is Q235B or Q345B(similar as Fe37 or Fe52)
- Main and end girders are connected by strong bolts
- The rail can be fixed on middle of main girder or partial of main girder.
- Metal structure is Steel with pretreatment process
- Main welding submerged arc welded automatically, nondestructive flaw detection.
End Girder
- End girder is welded by rectangle tube or quality steel plate
- Main girder and end girder is connected by bolts.
Trolley
- Compact structure, small size, light weight
- Travelling rail is P-shape rail or square-steel rail
- Consisted with motor,reducer, trolley frame and hoist
- Trinity travelling structure
- The lifting machanism is same as hoist's
Crane traveling mechanism
- When ground control, it use soft start, small current, No axial sway
- Motor has few and adapt to frequent starting, remarkable energy saving
- Cabin control use ZDR series cone winding rotor,three-phase asynchronous motor or electromagnetic brake motor
- High mechanical strength,compact structure,brake moment is adjustable
- Motor starting is stable,safe brake
- Crane wheel,trolley wheel and brake wheel use mid frequency induction hardening and Industrial frequency quenching processing, and Leeb hardness tester control heat treatment hardness
- QS trinity-drive and special wheel for double-girder crane
Electric Parts
- Safe touch line conductive rate is high, low pressure, set electric taxi speed is high
- The wire ropes in electrical box are in order, convenient to repair.
- Trolley moving's power is supplied by flat cable
- Sliding smooth, and beautiful outlooking.
Protection Devices
- Outdoor cranes are equipped with lifting mechanism, electrical control box and rainproof devices
- Set the trolley trip spacing device,
- Anti-collision device
- Audible and visual alarm device
Operation Device
- Ground control and cabin control
- Special cabin for bridge crane or capsule driver room
- Open vision, comfortable operation.
- Cam controller ,linkage platform controller
- The cable have open style, close style,can fixed on left or right