World's largest front loading shovel WK-75

• Producer Taiyuan Heavy Machinery Group Co., Ltd
• H 23,5 m; L 37,5 m; W 17,3 m
• Weight 2000 mt
• Productivity 12000 t/h ; 5 Mt/month

People watch an operation demonstration of the WK-75 mining excavator produced by the Taiyuan Heavy Machinery Group Co., Ltd in Taiyuan, capital of north China's Shanxi Province, June 5, 2012. The large equipment, about 37.5 meters in length, 17.3 meters in width and 2,000 tons in weight, is the largest mining excavator in the world. It is capable of digging five million tons of coal in a single month. (Xinhua/Yan Yan)

TAIYUAN, June 5 (Xinhua) -- A leading manufacturer in north China's coal-rich Shanxi province said Tuesday that it has produced one of the world's largest excavators.

The WK-75 mining excavator, which stands 23.5 meters tall and weighs 2,000 tonnes, can dig up to 12,000 tonnes of coal hourly, said Wang Chuangmin, president of Taiyuan Heavy Machinery Group Co., Ltd.

World's largest shovel Marion 6360 - The Captain

• Bucket 140 cum
• Weight 13600 mt
• Boom 65,5 m

The Captain: Marion 6360 Cover of the Arch of Illinois Feb/March 1985 newsletter The Captain was a unique machine in many ways. Besides being the large...

Marion 6360

Cover of the Arch of Illinois Feb/March 1985 newsletter

The Captain was a unique machine in many ways. Besides being the largest mobil land machine ever built ( at that time)28 million pounds..., and having the largest dipper capacity (180 CY), Many other features made this Marion shovel stand out. Features like being designed to strip two seams of coal simultaneously, or having enough clearance below it to allow loaders and haul truck to pass under it in safety (while it was operating.), or having two trailing cable reels, mounted on opposite sides of the machine... so it wouldn't have to turn around when it reached the end of the pit, and a host of others.

The Captain began it's working life in 1965 for Southwestern Illinois Coal Corp. at it's "Captain Mine" (hence the name) where itwas given the unique job of stripping two seams of coal simultaneously. The upper seam was about 50 feet above the lower one, And a machine was needed that could handle the job. Marion engineers went to work on the problem, and the captain was the result. As all shovels do, it walked directly upon the coal and stripped the seam in front of it, but this machine also stripped the upper seam at it's side ( the upper seam was nearly level with the operators cab). After making a pass, and the coal had been removed from both seams, the captain moved over and stripped the bench left from the upper seam down to the level of it's tracks. As the machine progressed, the overburden was placed in the pit left by the previous pass.



This view clearly shows the upper seam of coal being stripped along side the captain, as well as the seam it's walking on.

A Few of The Captains Specs

Weight:

28 million pounds

Height:

21 stories tall

Dipper Capacity:

180 CUBIC YARDS

Dipper Length:

133 Feet

Boom Length:

215 Feet

Size of dipper opening:

18' 6" Wide X 16' High



Photo: Arch Minerals of Illinois

This gives you a real good idea of what it takes to support and move a BIG shovel. The wooden mats are to keep the shovel from sinking into soft or unstable soil.

More Pics of the captain

World's largest loading rope shovel is Joy P&H 4800XPC - or soon Komatsu?

• Bucket 77,6 m3 heaped, 70,3 m3 struck
• Payload 122,7 mt

4800XPC Shovel

The P&H 4800XPC, our largest electric mining shovel, features a 135sT payload designed to three-pass load 400sT ultra-class haul trucks.

• Built upon the proven foundation of the P&H 4100XPC AC
• Includes the new Adaptive Controls technology suite (patents pending)
• Design changes optimize the machine structures, enable the larger payload, and improve overall shovel loading efficiency.
• Provides up to a 20% increase in production along with a decrease in cost per ton of up to 10% (when compared to the 4100XPC AC).

• Key structural enhancements include:
  • Dipper, with improved bank penetration and higher payload-to-weight ratio
  • Bail and equalizer, providing the proper combination of digging height, cutting force, dumping height, and rope life
  • Direct drive crowd with integral fleeting sheave, helping eliminate boom jacking
  • Modular counterweight and boarding stairs, enhancing safety and access
  • Enhanced ring gear, with improved fatigue resistance and accommodating increased payload
  • Optimized boom design with stabilized handle geometry, improving dipper maneuverability
• Adaptive controls technology optimizes shovel power usage and include the following:
  • Smart/dynamic crowd, limiting rearward tipping moment during impact, improving bank penetration in hard toe, and reducing boom jacking
  • Opti toe, increasing bail pull based on position relative to the bank and limiting forward overturning moment while digging
  • Dynamic hoist, limiting effects of hoist inertia during impact, measured impact loading up to 200%+ of stall torque, and limiting extreme burst of forward tipping movement
  • Dynamic swing, reducing loads from swinging in the bank, using dynamic motor response to marginalize impacts with ground objects, and protecting the machine from loading on racks, handles, saddle blocks, shipper shaft, and boom.
  • Extended reach, improving truck spotting range and allowing for increased shovel each when unloading

Working Ranges

Height of cut	18.0 m	59 ft. 0 in.
Radius of cut	24.3 m	79 ft. 9 in.
Maximum dump reach	24.8 m	81 ft. 3 in.
Dumping height (door open)	9.4 m	30 ft. 10 in
Floor level radius	16.2 m	53 ft. 1 in.
Tail swing radius	9.8 m	32 ft. 3 in.
Operator eye level	10.1 m	33 ft. 1 in.

 Capacity

Nominal payload*	122.7 mt	135 st.
Nominal dipper capacity SAE struck SAE 2:1	65.7-70.3 m372.5-77.6 m3	86-92 yd3 92.7-99.1 yd3
Rated suspended load	209 mt	230 st.
Optimum truck size	363 mt	400 st.

* Payload and dipper capacity are dependent on many factors. Contact Joy Global for an analysis of your specific application.

Power Requirements

Supply voltage*	7200 or 13800V 3 Phase, 60 Hz	6000, 6600, 7200 or 11000 3 Phase, 50 Hz
Supply transformer	Minimum 3750 kVA
Minimum short-circuit VA available at shovel	30 MVA

* Voltage per customer requirements

Overall Dimensions

Width	14.4 m	47 ft. 1 in.
Length	15.0 m	49 ft. 3 in.
Height over gantry	14.7 m	48 ft. 3 in.
Width of crawler shoes	1930 mm 2210 mm 2540 mm	76 in. 87 in. 100 in.
Width of crawlers (76")	10.5 m	34 ft. 5 in.
Length of crawlers	11.7 m	38 ft. 6 in.
Ground clearance	0.7 m	2 ft. 2 in.
Height - ground to bottom of counterweight slabs	3.2 m	10 ft. 6 in.

Adaptive Controls Technology

• Increases shovel digging power without sacrificing life
• Reduces loading from non-productive impacts
• Decreases operator fatigue by limiting rocking motion

Swing

• Three modular P&H planetary gear cases
• Spring-set air release disc brakes (one per motor)
• Splash lube filtration system

Propel

• Propel on demand, providing rapid transfer to propel mode
• Two P&H planetary gear cases
• P&H DELTA Drive low-tension sprocket drive system with heavy-duty cast crawler shoes
• Spring-set air release disc brakes - one per motor

Crowd

• Twin low-inertia AC motors to minimize shock loading and boom jacking
• Direct drive crowd to eliminate belt maintenance
• Modular crowd motors with integral pinions
• Two input pinions
• Dual spring-set air release bracks

Hoist

• Single enclosed gear case with filtered and cooled oil
• 68" diameter hoist drum
• Ferrule becket system
• Dual electric tuggers
• Spring-set air release disc brakes - one per motor
• Host rope fleeting sheave to protect rope from excessive oscillation