INTRODUCTION OF XUL621 Underground Mining LHD Loader
XUL621 (WJ-8) Underground LHD Loader
Technical Specifications
Introduction
XUL621 (WJ-8) underground loader is a diesel LHD with super large tonnage, which meets the requirements of mine safety certification. It is applicable to the shoveling, transportation and unloading of materials in mine roadways and other small tunnels in non explosive environments, and can meet the requirements of ore truck loading within 63t during underground mining. The machine has high protection level and is suitable for underground mines of 6m × In the humid and dusty environment of 6m roadway, the machine is highly intelligent, safe and reliable to use, has good overall stability, and can greatly improve the mine productivity and profitability.
Features
1) High end configuration: the main parts and components are international famous brands and optimized to ensure the working performance and stability of the whole machine. Imported Euro III emission Volvo engine, American Dana torque converter and gearbox, Rexroth pump, Parker valve group, Mico brake valve, etc. are configured.
2) Advanced system: the hydraulic system adopts the load feedback variable system and hydraulic confluence to further optimize energy saving and improve system efficiency The working oil tank is separated from the brake oil tank, which effectively reduces the mutual pollution between hydraulic oils, reduces the failure rate of the whole machine, improves the service life of hydraulic components, and improves the stability of the whole machine.
3) Simple operation: the whole machine adopts electro-hydraulic proportional pilot control. The walking, steering and working functions are integrated on two electronic control handles, which greatly simplifies the operation and improves the driver's operating comfort and efficiency.
Driving comfort: The enclosed cab adopts ergonomic design, is equipped with air conditioning and fresh air system, has a large cab space, and adopts double shock absorption design of cab shock absorption and air suspension seat shock absorption to
- maximize operation comfort.
- Safe and reliable: the cab design meets FOPS and ROPS standards. The axle is equipped with spring brake and hydraulic release wet spring brake system. The front axle is equipped with Posi Torq differential and the rear axle is equipped with no spin differential to improve the traction performance and passing performance and reduce tire wear.
- Characteristic appearance: modern style appearance design with XCMG characteristics, with high recognition.
- Simple maintenance: a centralized lubrication system is equipped, and all filter elements are placed on the right side of the frame to achieve one-stop maintenance.
- Personalized customization: XUL621 underground internal combustion LHD is equipped with sight distance remote control system, centralized fire extinguishing system, automatic weighing system, tire pressure monitoring, boom suspension, etc. At the same time, it is equipped with a series of personalized customization functions, such as remote control system, one button tracking, intelligent anti-collision, etc., which are suitable for different working conditions and different bucket capacity requirements, to meet the needs of various working conditions.
Main Technical Parameters and Outer Appearance
| No. |
Item |
Unit |
Parameter |
Note |
| 1 |
Rated bucket volume |
m3 |
10 |
|
| 2 |
Rated Load |
t |
21 |
|
| 3 |
Max Shoveling Force |
kN |
220 |
|
| 4 |
Max Traction Force |
kN |
431 |
|
| 5 |
Traveling Speed |
km/h |
Forward/Reverse: 4.7/8.4/14.5/25.9 |
|
6 |
Engine |
Brand |
/ |
Volvo |
|
| Power |
kW |
375kW@2100rpm |
| 7 |
Torque converter |
/ |
Dana C9000 |
|
| 8 |
Transmission |
/ |
Dana R8000 |
|
| 9 |
Axle |
/ |
Kessler D116 |
|
| 10 |
Tyre |
/ |
28.00-33/3.5 |
|
| 11 |
Max Discharge Height |
mm |
2815 |
|
| 12 |
Min Unloading Distance |
mm |
3234 |
|
| 13 |
Action time of working device |
s |
14.7 |
|
| 14 |
Gradeability |
° |
14 |
|
| 15 |
Min.Ground Clearance |
mm |
533 |
|
| 16 |
Min.Turning Radius |
mm |
3713/7984 |
|
| 17 |
Max.Steering Angle |
° |
±42.5 |
|
| 18 |
Swing Angle of Rear Axle |
° |
±8 |
|
| 19 |
Outer Dimension under transporation |
m×m×m |
12520x3120×3000 |
|
| 20 |
Operating Weight |
t |
60±0.5 |
|
XUL621LHD Appearance and Turning Diagram
Technical Introduction
1. Power system
The power system adopts Volvo Euro V emission standard engine, and the exhaust system adopts catalytic reduction treatment to save energy and protect the environment; Enough power reserve is available for plateau construction. The engine cooling system uses an electronically controlled piston variable displacement pump and a fixed displacement gear motor as the power source, and the engine controller controls the displacement of the variable displacement pump according to its own signal, thereby controlling the motor speed, and finally realizing the engine thermal balance.
Engine model: TAD1380VE
Emission standard: Euro V
Rated power: 375kW/1900rpm
Maximum torque: 2595Nm/1200rpm
Fuel tank volume 750L
2. Transmission system
The transmission system adopts mature Dana torque converter and electric shift gearbox, with large traction and strong climbing ability. The axle is equipped with spring brake and hydraulic release wet spring brake to realize the integration of working brake, parking brake and emergency brake, simplify the brake hydraulic circuit, and improve the braking reliability and safety.
Transmission gear and speed ratio: front four rear four, 4.07 2.26 1.29 0.71
Axle speed ratio: 32.58
Traction force: 431kN
Maximum speed (heavy load): 25.9km/h
3. Hydraulic system
The working system and steering system adopt load feedback variable system and hydraulic confluence, and the control mode is electro-hydraulic proportional pilot control. The axle braking and cooling pump is a variable system, which controls the driving and braking in two ways. The steering pump is connected in series with the brake pump and is placed at the torque converter power intake.
Maximum pressure of steering system:
Maximum flow of steering system: 29.5MPa
209L/min
Maximum pressure of working system: 29.5MPa
Maximum flow of working system: 209L/min
Rated pressure of brake pump: 28MPa
Rated flow of brake pump: 51L/min
Volume of main oil tank: 460L
4. Electric control system
The electric control system uses CAN bus communication, integrated electronic handle to control the electro-hydraulic proportional valve, realizing the walking control (forward, backward, steering, shift) and working device control (boom lifting and bucket overturning) of the scraper. Monitor and display engine operating parameters, hydraulic system parameters and vehicle driving information, and be able to intelligently diagnose and alarm faults.
5. Frame
The structure of the frame is articulated, and the connection of the articulated part refers to the loader type structure: two tapered roller bearings are used at both the upper and lower sides. The articulation center of the front and rear frames is arranged in the middle of the wheelbase, which has good stability. The rear wheels and front wheels share the same track, so that the turning radius is smaller, the driving resistance is small, and the tire wear is small. The rigid suspension structure is adopted between the front and rear frames and the axle to reduce the vehicle height and adapt to the low roadway environment in the mine. The main board of the frame is made of Q460C, which has a high safety factor and can withstand high strength impact and vibration.
Hinge angle of frame: ± 42.5 °
Wheel base: 4097mm
Minimum ground clearance: 533mm
Departure angle: 14 °
6. Working device
The Z-type reversing six link working mechanism is adopted, the main frame adopts box structure, and the main board material is Q550D, which improves the reliability of the working device. The bucket is made of HARDOX400 wear-resistant plate. The blade is equipped with flat teeth specially for ESCO brand scraper, which has the advantages of simple structure, reliable unloading, large effective area, etc.
Bucket capacity: 10m3
Bucket retraction angle: 47 °
Discharge angle: 38 °
Maximum discharge height: 2815mm
Minimum unloading distance (from tire center): 3234mm
Maximum down excavation depth: 1401mm
Maximum shoveling force: 350kN
Maximum lifting capacity: 213kN
Lifting time: 8.4s
Unloading time: 1.8s
Arm falling time: 4.5s
Three items and time: 14.7s
7. Cab
The cab meets the FOPS and ROPS standard certification, and is equipped with refrigeration air conditioner, interior and exterior lights, wiper, supercharger, etc. The cab and the frame are fixed with rubber shock absorbers to reduce the cab vibration; The interior is made of flame retardant and noise reducing interior fabric, which is beautiful and comfortable, and can effectively prevent dust and reduce noise; Adjustable air suspension seat and four point safety belt provide a comfortable working environment for operators. The operating system is equipped with a 10 inch color display screen, which has a good effect.
8. Security Configuration
Centralized fire extinguishing system+portable fire extinguishers (8kg, two), heat source isolation shield, exhaust pipe insulation cotton protection, radiator fan shield, etc.
Configuration
Functional Configuration Table
| (Standard,Option): |
| Closed cab |
|
Security fence |
|
| Emergency steering |
|
Steering and boom locking |
|
| Emergency braking |
|
Tire pressure monitoring |
|
| Fault alarm and intelligent detection |
|
System pressure detection |
|
| Automatic centralized lubrication system |
|
Hydraulic and transmission oil temperature detection |
|
| Air suspension seat |
|
Hydraulic oil level detection |
|
| Cab air conditioner |
|
Information transmission system |
|
| Supercharging system |
|
Automatic weighing system |
|
| Dry powder fire extinguisher |
|
Long range visual range remote control |
|
| APC automatic shift control |
|
Autopilot |
|
| Specific attitude tracking control |
|
Automatic fire extinguishing system |
|
| Boom suspension |
|
8m3 10m3 bucket |
|
Main Parts & Components Origin
| No. |
Main Parts & Components |
Brand |
| 1 |
Engine |
Sweden |
Volvo |
| 2 |
Torque converter |
USA |
DANA |
| 3 |
Transmission |
USA |
DANA |
| 4 |
Axle |
Germany |
Kessler |
| 5 |
Tyre |
USA |
Techking |
| 6 |
Work pump |
Germany |
Rexroth |
| 7 |
Steering pump |
Germany |
Rexroth |
| 8 |
Radiator pump |
Germany |
Rexroth |
| 9 |
Load sensing valve |
USA |
Parker |
| 10 |
Work Pump |
USA |
Parker |
| 11 |
Steering valve |
USA |
Parker |
| 12 |
Brake valve group |
USA |
Parker |
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