L70 Grain Hopper Wagons 70T Pay Load Corn Wheat Soybeans Railway Transport Wagons

L70 Grain Hopper Wagons 70T Pay Load Corn Wheat Soybeans Railway Transport Wagons

1. Application

L70 grain hopper wagons is used on Chinese standard gauge railway lines to transport bulk grain goods such as corn, wheat, soybeans, etc. The grains are loaded from the top and unloaded from the bottom.
This hopper wagon has good adaptability to mechanized conveying and warehousing system. It has the features of good sealing, no pollution, and no need package. To maximum expand the capacity, the cross section is designed to be a large tubular shape with 70 tons loading weight and this structure could disperse the force generated by the collision of bulk grains during transportation, so that the grains should not easily hardened and damp. The loading ports are fitted on the top and the 4 unloading hopper ports are fitted at the bottom. The doors could be operated easily. The bulk grains could flow out automatically by its own gravity. The unloaded grains from the hopper car can be transported to the granary through the conveyor belts under the iron mesh for subsequent processing.

2. Main structures

The grain hopper wagon adopts a complete welded steel loading structure without a center beam, mainly composed of the vehicle body, braking device, coupler buffer device, bogie, and other parts.

• Wagon body

The vehicle body is composed of under frame, side walls, end walls, funnels, roof, loading port covers, bottom doors, etc. The main structure of the vehicle body is made of Q450NQR1 high-strength weather resistant steel that meets the requirements of Chinese railway.

• Funnels:

There are four funnels at the bottom of the vehicle body, mainly composed of funnel plates, columns, crossbeams, and other welded components. The thickness of the funnel plate is 4mm, and the columns are made of cold-formed channel steel, while the beams are made of cold-formed angle steel. The angle between the longitudinal funnel plate and the horizontal plane is 40 °, and the angle between the transverse funnel plate and the horizontal plane is 42 °.

• Loading port covers：

The top of the car is equipped with nine flipped loading port covers with buffering function. The loading port covers adopt a steel plate pressed structure, and there is a sealant strip installed in the matching part with the loading port. The loading port covers are pressed tightly by a waterproof compression mechanism.

• Bottom doors

Each funnel bottom is equipped with a pull-out bottom door device, mainly including the bottom door frame, manual opening and closing mechanism, and locking mechanism. The bottom door frame is composed of longitudinal beams, transverse beams, and support beams, which are welded together. The manual opening and closing mechanism is composed of a rotor, gears, racks, shafts, and bearings, while the locking mechanism is composed of door locks and sealing devices.

• Air brake device

• Hand brake machine

• Coupler & buffer

• Bogie

The bogie adopts K6 type cast steel three piece wagon bogie with a 23.5t axle load. The bolster and side frame are made of B-grade steel with a wide guide frame structure for the side. There is a cross support device between the two side frames. The bolster spring is of two-level rigidity.

3. Main technical parameters:

Pay load	69t
Axle load	23t
Max. capacity	102m³
Commercial operation speed	120 km/h
Rail gauge	1435 mm
Min radius	145 m
Length	16466 mm
Max. width	3344 mm
Max. Height (empty)	4195 mm
Bogie type	K6 casting bogie
Fixed distance of bogie center	1830mm
Coupler and buffer	No.17 coupler, MT-2 buffer
Coupler center height	880mm
Loading port sizes(length*width)	12620*600mm
Unloading port size(length*width)	800*400mm
Funnel plate inclination	40°（longitudinal）42°(transverse)
Lifespan	25 years
Limit Gauge	Comply with Comply GB146 1-83 ‘standard gauge railway rolling stock gauge

4. Drawing

5. Detail Photo: