QD model 300 ton 320 European 350 Ton double girder beam used electric overhead traveling bridge cranes in workshop for sale

QD 300 / 20 ton double girder overhead crane

Brief introduction

This overhead crane is of Main load 300 ton, aux load 20 ton, span 20m, HOL 10 m. It is of Europe style design, based FEM standard

QD model crane is of higher work duty, which can reach A5, A6, A7, A8; and large tonnage, such as 50 ton, 80 ton, 100 ton, 200 ton, 250 ton, 300 ton, 500 ton, etc...
It is composed of crane trolley (winch trolley), end truck, bridge girder, electrical system, etc.
Control way can be cabin, or, Pendant, and remote. The cabin is Full field of view, suspended under the main girder.

It is widely used for mechanical assembly , mechanical repair , stone processing , steel handling , metallurgical , chemical workshops, power stations, material yards,Etc

Work Features:

(a) The Whole crane is of variable speed by VFD ~~Schneider electricals/ Siemens main electric parts , Schneider VFD, SEW brand geared motors;
(b) Main lifting speed: 0-3m/min; Aux lifting speed: 0-10m/min; CT speed: 0-25m/min; LT speed: 0-40 m/min;
(c) Work Duty: FEM2M, A5; Cabin control, Remote control;
(d) Europe style design of low headroom, low deadweight, low noise, power-saved, investment-saved, etc;
(e) Smart anti-swaying system is optional;
(f) We can reserve the Gateway, for the future upgrading project to automation, intelligient crane, even, non-person workshop

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Product Overview QD model 300 ton 320 ton European 350 T double girder beam used electric overhead traveling bridge cranes

Key Components~~Top configurations, SEW geared motors, Schneider electricals, PLC, VFD, VFD, Cabin QD model 300 ton 320 ton European 350 T double girder beam electric overhead traveling bridge cranes

• Independent Trolley Mechanism:

It applies lightweight design, direct acts the lifting load on end carriages of trolley frame both sides. With clear force and compact layout, it has high driving efficiency, low noise, low crane height and low dead weight.

• Trolley Traveling Mechanism:

It is of triple compact design of motor, reducer, brake. The motor is of F insulation class, IP55 protection class, 40% load continuity rate; with thermal protection, power-distribution magnetic disk brake and reducer with hard gear surface which has been grinded or gear shaved. It’s not necessary to replace the oil in gear box during the work lifetime. It has forged wheels, wheel rim and the hardness of tread surface of HB330-380. It adopts the VVVF control speed---low speed at heavy load, fast speed at light load; adjusting range is 1:10; with stable traveling, no impacting. Trolley Limit switch adopts the cross type traveling limit switch, which can reduce the speed to zero before the collision of buffer with blocks of the rail end.

Crane trolley, End carriages, wheel blocks

Loading & Shipping QD model 300 ton 320 ton European 350 T double girder beam used electric overhead traveling bridge cranes

2 sets of 200 ton truck crane for unloading and installation

Final installation & Static Load Testing QD model 300 ton 320 ton European 350 T double girderbridge cranes for sale

• Lifting Mechanism

It adopts three-pivot installation form; both ends of reel directly support the end carriages of trolley frame; pulley beam connects end carriages on both sides through bolts to form longitudinal beam. Output shaft of reducer should be coordinately connected to outstretched reel shaft. The elastic coupling can be applied to hoisting motor and reducer.

1, Welding Reel. It is made of short shaft steel plate rolling, with bearing bases on both ends, one of them outstretches set shaft, of which structure is simple and easy for adjustment and installation.

2, Hight-strength galvanized steel rope. With breaking force of 1870kn/mm2, it’s not necessary to get it coated with rustproof oil and maintenance-free.

3, Lifting motor. It adopts the frequency conversion motor, which is optimized air-cooling type, with insulation class F and protection class IP55, and power continuity rate 40%.

4, Lifting reducer. It gets the tooth surface carburized and hardened, with hardness of HRC60, and also has been grinded or gear shaved, with light deadweight, good sealing and no leakage.

5, Lifting brake. The regular closed brake has automatic abrasion compensation function which can manually release under emergency station through separate manual operation. If necessary, two brakes could be allowed to install.

6, Hook group. It consists of hook and pulley. The hook material is DG34CrMo. The pulley material is Q235 hot-rolling. It adopts anti-friction roller bearing, the hook can be 360degree rotation. It is equipped with spring-pressed safety lock, preventing from slipping off. All pulleys use maintenance-free bearing, the design can efficiently prevent abrasion between steel rope and pulley shell. It has delicate overall structure and volume as well as nice appearance.

7, Lifting Limit switch. It is of cam rotary type, 4 steps adjusting, up and down limitation, auto-resetting, safe and reliable. The lifting pre-limitation can reduce the impact; extreme limitation can avoid the hook from over-lifting.

8, Electrical Box. It is of IP55 protection class, air plug and fast-easy installation; Schneider/Siemens electrical kits, etc

1.Euro-style crane is of low headroom, which can reduce the height of the workshop.

2.Euro-style crane is of light dead-weight, which can decrease the load of the worshop.

3.Euro-style crane is of small limitation, which can increase the work space of the crane.

Henan Dima Crane Co.,Ltd

We are an Innovative Designer & Professional Supplier of Euro-style cranes & kits, such as Overhead crane, gantry crane, jib crane, smart automatic crane,Euro-style hoist, Euro-style end carriages, KBK crane system, Bridge launching crane, bridge lifting cranes, etc.

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