1. Overview

1.1 Target

To transport molten iron on railway lines.

1.2 Main Feature

1.2.1 The locomotive is mainly composed of a large frame, two sets of three-axis bogies, and two sets of coupler and draft gears.

1.2.2 The frame adopts a box-shaped curved beam structure, and the hot metal tank is placed in the center of the low center of gravity.

1.2.3 There are two observation corridors installed at both ends of the locomotive frame to facilitate the driver's observation and remote control.

1.2.4 The locomotive has a compact structure, low center of gravity and good stability during operation.

1.3 Operating Conditions

Environmental Conditions

Operating Temperature:                                             -20℃～+50℃ (meteorological temperature)

Permissible Wind Force During Operation:                 ≤6 level     

Withstand Wind Force in Non-working State:            ≤11 level

Operating Altitude                                                      not less than 3000m

Line Conditions

Maximum Ramp:                                                        35‰

Minimum Turning Radius:                                          90m

Gauge                                                                         in accordance with GB146.1-83 (standard gauge railway Locomotive and vehicle gauge).

2. Function and Performance Solutions

2.1 Overall Program Description

The hot metal tank transport vehicle mainly includes a large frame, two sets of three-axis bogies, two sets of coupler and draft gears, etc.The large frame adopts a box-shaped curved beam structure welded by steel plates, which has high overall strength, good rigidity and strong impact resistance.A molten iron tank holder is installed above the middle of the large frame, and a lower center plate and lower side bearings are installed below both ends.Mounting beams are designed at both ends of the frame for the installation of coupler and draft gears.Two observation corridors are installed at both ends of the frame, which facilitate the driver's observation and remote control.The vehicle bogie is a three-axis bogie, which is stable in operation, safe and reliable.

2.2.  Composition of The large frame

The large frame is an all-steel welded structure, mainly composed of traction beams, body bolsters, end beams, curved beams, and upper cover plates of the body bolsters. The trunnion box is installed on the upper cover plate of the body bolsters through bolts. The trunnion direction of the hot metal tank is the same as the running direction of the hot metal car. The traction beam is made of 310 B-shaped steel, and the front and rear draft lugs are riveted on the traction beam. The impact seat is riveted on the end beam, and the body bolsters adopts a variable-section box structure. It is composed of corbel webs, upper and lower cover plates, and partitions welded together. The curved beam is composed of upper and lower cover plates, curved beam webs, stiffeners, and partitions welded into a box-shaped structure. All steel plates of the large frame are made of Q345C high-quality steel plates. All center plates are equipped with center plate pads and center pins, and the center plate pins should be easy to disassemble and assemble. All center plate bolts have T-shaped heads to facilitate tightening of nuts, center plate bolts and side bearing bolts. The strength requirement is 8.8 or above. Observation corridors are installed at both ends of the frame, and 4 pedals are installed at both ends of the vehicle body. All bolts must be tightened when the vehicle is delivered, and the nuts are installed according to process requirements (except for the locknuts) ).

2.3 Three-axis Bogie

The bogie adopts a three-axis combined bogie. Two sets of three-axis bogies are located at the bottom of the vehicle, and are placed at the front and rear ends of the vehicle to connect with the large frame.The three-axle bogie is mainly composed of frame, axle box, spring group, wheelset, bearings, etc.

2.4 Coupler and Draft Gear

The coupler and draft gear adopts the railway standard 13B upper acting coupler; it is equipped with ST-type draft gear with large capacity; a protective cover is installed on the upper part of the coupler and draft gear, and the coupler release rod is of full length type.

2.5 Painting Process

Before applying primer, the surface of each component should be sandblasted. The surface rust removal level should reach Sa1/2.

3. Vehicle Design and Manufacturing Standards

(1) General Technical Requirements for Heavy Machinery - Product Inspection JB/T5000.1-2007

(2) General Technical Conditions for Heavy Machinery - Flame-Cut Parts JB/T5000.2-2007

(3) General Technical Conditions for Heavy Machinery - Welded Parts JB/T5000.3-2007

(4) General Technical Conditions for Heavy Machinery - Cast Iron Parts JB/T5000.4-2007

(5) General Technical Conditions for Heavy Machinery - Cast Steel Parts JB/T5000.6-2007

(6) General Technical Conditions for Heavy Machinery - Repair Welding of Cast Steel Parts JB/T5000.7-2007

(7) General Technical Conditions for Heavy Machinery - Forged Parts JB/T5000.8-2007

(8) General Technical Conditions for Heavy Machinery - Machined Parts Parts JB/T5000.9-2007

(9) General Technical Conditions for Heavy Machinery - Assembly JB/T5000.10-2007

(10) General Technical Conditions for Heavy Machinery - Painting JB/T5000.12-2007

(11) General Technical Conditions for Heavy Machinery - Packaging JB/T5000.13-2007

(12) General Technical Conditions for Heavy Machinery - Non-Destructive Testing of Cast Steel Parts JB/T5000.14-2007

(13) General Technical Conditions for Heavy Machinery - Non-Destructive Testing of Forged Steel Parts JB/T5000.15-2007

(14) GB4879-1999 Rust proof packaging

(15) GB1222-84 Spring Steel

(16) GB1239.4-89 Technical Conditions for Hot Rolled Cylindrical Spiral Springs

(17) GB12813-91 Technical Conditions for Assembly of Railway Vehicle coupler and draft gears

(18) TB/T2945-1999 Technical Conditions for LZ50 Steel Axles and Billets for Railway Vehicles

(19) TB/T2817-1997 Technical Conditions for Rolled Steel Solid Wheels for Railway Vehicles

(20) TB/T1335-1996 Specification for Strength Design and Test Evaluation of Railway Vehicles

(21) TB/T456-91 Technical Conditions for Couplers and Coupler yokes

(22) GB/T700-2006 Carbon Structural Steel

(23) GB/T1591-2008 Low alloy high-strength structural steel

4. Overall Performance Indicators

4.1 Main Technical Parameters of The Vehicle

Total Weight of Molten Iron and Tank When Fully Loaded:                ≥230t

Track Gauge:                                                                                        1435 ± 2mm

Distance Between The Inner Sides of The Two Coupler Knuckles :     10750mm

Frame Width:                                                                                        3400mm

Height from Coupler Center to Rail Surface:                                       880±10mm

The Minimum Distance Between the Bending Beam of the Vehicle Body and The Rail Surface is 300mm

Minimum Curve Radius to Pass:                                                          90m

Total Height :                                                                                        5585mm

4.2 Basic Dimensions

Vehicle Hength:                                                                                    10750mm

Maximum  Width of Car:                                                                     3400mm

Maximum  Height of Car:                                                                    5585mm

Height of Coupler Center Line (Empty Car):                                        880mm

Wheel Diameter:                                                                                  650mm