Unloading Bottom Dump Car and Unloading Station

HOMEPAGE > PRODUCTS > Excavating & haulage > China ENFI Low-Wheel-Pressure Large-Capacity Rail-Mounted Mine Car and Unloading Station

Product Brief
Advantages & Features
Working Principle
Technical Parameters
Application Achievements
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Product Brief

China ENFI Low-Wheel-Pressure Large-Capacity Rail-Mounted Mine Car and Unloading Station

China ENFI Low-Wheel-Pressure Large-Capacity Rail-Mounted Mine Car and Unloading Station

China ENFI is the leading editor of China's mine car technical standard GB/T 2885.4-2008 Narrow-Gauge Mine Vehicles - Part 4: Bottom-Dump Mine Cars. The company has mastered the core technologies for the full range of bottom-side-dump and bottom-dump mine car equipment. Its independently developed low-wheel-pressure large-capacity rail-mounted mine cars are widely used in rail transport at non-coal mines.

Specification & Series：The unloading bottom dump mine car covers multiple specifications of 6m³, 10m³, 12m³, 20m³ and 25m³, and is compatible with multiple gauges of 900mm, 914mm and 1435mm.
Application Fields：China ENFI large-scale rail Mine car are widely used in rail transport at non-coal mines, with mature applications in large, medium and small-sized non-coal mines and with a good reputation. China ENFI can also provide non-standard customized mine cars and supporting unloading stations for mining enterprises.

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enfi.cemsa@gmail.com

Advantages & Features

Long service life, efficient and reliable
On the premise of ensuring reliable strength, special high-strength steel is used for the main structure to achieve overall structural lightweighting. Special wear-resistant steel is used for wear-prone parts, with a calculated service life of up to 15 years. The product features stable operation, fast unloading, and durability, which can significantly reduce the impact load on locomotives. It is easy to maintain, ensuring stable, reliable production operation and efficient transportation.
The low-wheel-pressure design significantly reduces operating costs
A multi-axle configuration with bogies is adopted for large-capacity mine cars, which effectively reduces the contact load between wheels and rails by approximately 40%. Combined with the forged wheel technology, this design can significantly extend the service life of rails and wheels, while greatly reducing spare parts consumption and operating costs.
The entire vehicle is easy to maintain, and its spare parts are easy to replace
Durable wheels and maintenance-free integrated bearings are adopted on the mine car, ensuring high reliability. All wearing parts feature a modular design, making them easy to replace.
Customized design with high adaptability
The entire product series (including mine cars and unloading stations) are independently developed by China ENFI and can be customized according to the specific conditions of mines and the personalized needs of clients. Relying on China ENFI’s comprehensive disciplinary configuration and expert resources, it can ensure compatibility with the mining process plans of mines.
Multiple additional functions are available as options
An integrated design solution for unmanned driving control systems adapted to rail transport can be provided; it also supports the selection of functional components suitable for unmanned transport, such as auxiliary station-passing devices and uncoupling detection devices.
Product safety and full-lifecycle services
The products have obtained the Mine Product Safety Mark Certification (KA Certification) and provide professional management throughout the entire service life of the equipment as well as comprehensive after-sales services.

Working Principle

1. Low wheel pressure design The design concept of the mine car adopts a lightweight carriage and a steerable underframe. By enhancing the body strength, reducing the turning radius, and implementing other measures, it effectively lowers the risk of rail gnawing and minimizes derailment accidents, thereby ensuring the long service life and stable operation of the mine car.
2. Digital simulation technology and equipment virtual prototype By applying digital simulation technology, optimization design simulations are conducted for a variety of extremely harsh working conditions, and stress analysis is performed on the mine car's underframe and carriage during full-load operation and loading impact processes. This ensures that the entire vehicle does not experience excessive deformation or cracking, and guarantees that the mine car will not suffer permanent deformation when subjected to the impact of the maximum ore free fall during ore loading. Through customized CAE full-process simulation for application scenarios, the mine car is enabled to achieve reasonable lightweight design while possessing excellent structural rigidity and adaptive dimensions. The virtual prototype technology is adopted in the design of curved rails to ensure that the spatial curved surface of the curved rails perfectly fits the dumping wheels during the ore dumping process, with no additional torque generated.
3. Multi-body dynamics analysis and discrete element simulation Multi-body dynamics technology is used to verify the ore unloading process in the unloading station, ensuring the force balance of the curved rails, as well as a smooth, stable, continuous and residue-free unloading process. The maximum opening-closing angle of the mine car can reach 60 degrees. Discrete element simulation is used to simulate abnormal scenarios where a large number of large-sized ores are present. Based on the simulation results and combined with practical experience, the unloading angle and unloading curve are optimized to ensure no ore jamming occurs.

Technical Parameters

Parameter Name Pro	Unit	6m³ bottom & side dumping	10m³ bottom & side dumping	12m³ bottom & side dumping	20m³ bottom & side dumping	25m³ bottom & side dumping	6m³ bottom dumping	10m³ bottom dumping	20m³ bottom dumping
Volume	m³	6	10	12	20	25	6	10	20
Is there a bogie or not	/	No	Yes	Yes	Yes	Yes	No	No	No
Outer dimensions（Length）	mm	4700	5400	5400	7670	7050	4750	5485	6450
Outer dimensions（Width）	mm	1800	2050	2050	2650	2780	1800	2050	2450
Outer dimensions（Height）	mm	1650	1850	2050	2350	2765	1650	1850	2520
Net weight	kg	5800	9450	11200	24200	17500	5850	9520	16500
Maximum load	kg	15000	25000	30000	50000	62500	15000	25000	50000
Traction height	mm	450	500	500	958	1340	450	500	750
Gauge	mm	900	914	914	1435	1435	900	914	1435
Wheelbase	mm	1950	2200	2250	3500	3200	1950	2400	3250
Wheel diameter	mm	400	500	500	650	900	400	500	600
Diameter of discharge wheel	mm	350	350	350	600	650	380	350	550
Ground clearance of the discharge wheel	mm	50	50	50	65	90	70	50	65
Minimum turning radius	m	20	25	25	35	50	20	25	50