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Contractors World 2011 Volume 2 Issue 7
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Construction New - site equipment

New hammer from BSP developed for rail infrastructure works - Page 2 of 2

In operation on the Manchester Metro, the tubular steel piles vary between 5 m and 8 m long and range in diameter from 406 mm, 457 mm and 610 mm. Initially the piles are pitched and driven by a side-grip vibratory piling hammer until the pile reaches its refusal limit. The BSP impact hammer is then used to drive the piles to design level. According to Terrawise, the combination of both side-grip vibratory and BSP hammers, the company’s site crew is now able to install an average of 11 piles in a typical eight-hour shift.

The BSP hammer’s drive cap adaptation can also fit standard 610 mm diameter Network Rail steel piles, commonly used for structure foundations. Overall width of the cap guide is 800 mm which can be adapted for other pile sizes, typically with diameters of 457 mm, 406 mm and 305 mm.

Both the new DX-RT hammers can also be used to drive sheet piles, small bearing piles or tubular steel with ultimate load bearing up to 1800 kN depending on site conditions. They can be operated directly from a suitable hydraulic excavator or hydraulic crane.

Innovative double acting cylinder

A feature of the new hammers is an innovative BSP double-acting cylinder, whereby the ram is accelerated on its downward path to achieve higher impact energy. This energy is developed from a short stroke leading to a higher blow rate and greater pile productivity.

A low hook weight and a relatively small amount of hydraulic power required to operate, make these hammers an economical option not only for driving piles for installing stanchions and gantries but also for pile walls, coffer dams and temporary earthworks.

For more information click here: BSP DX-RT Hammer

 

 

 

Takeuchi TB285 Mid Size Excavator to replace TB175Takeuchi TB285 Mid Size Excavator to replace TB175

Takeuchi-US has announced the introduction of the TB285 mid size hydraulic excavator. Although shown at ConExpo 2011 in Las Vegas, it was not, at that time, officially available.

This is a next generation 200 series model and replaces the TB175, which will no longer be offered.

It has been completely redesigned to deliver higher performance, increased operator comfort, and simplified service.

Takeuchi
 
TB285 Tracked Excavator
 
Engine Yanmar 4TNV98T  
Gross Engine Output 51.6 kW (69.2 hp)  
Operating Weight (steel track) 8,892 kg (18,780 lbs)
 
Sound Level 73 dB(A)  
Max. reach 7,435 mm (24 ft 5 in)  
Max. dig depth 4,570 mm (15 ft 0”)  
Max. vertical dig height 3,805 mm (12 ft 6 in)
 
Max. dump height 5,270 mm (17 ft 3 in)
 
Specifications are subject to change according to market and configuration
 
     

The TB285 features an Interim Tier 4 turbocharged Yanmar engine that delivers 51.6 kW (69.2 hp) The operating weight is just under 9 tonnes (20,000 lbs) with a dig depth of 4,570 mm (15 ft) It boasts a bucket breakout force of 7,515,kg (16,568 lbs) and a traction force of 8,973 kg (19,783 lbs). The excellent torque deliver more aggressive pushing, climbing and turning.

Takeuchi say that the dual heavy duty boom cylinders provide considerable strength for lifting and ample clearance for buckets and attachments. Options include a 550 mm (21.7”) wide steel track instead of the 450 mm (17.7”) wide rubber track, hydraulic thumb, and heavy duty adjustable bucket coupler.

A redesigned upper structure features a rounded counterweight and covers allow the excavator to work in more confined areas.

Launched in the USA, the machine will be rolled out to other markets in compliance with regulations. Contractors World was told that the model in the UK (imminent) will be to the same configuration but there may be variations to suit customer preferences in other European countries.

For more information click here: Takeuchi TB285 Excavator

 

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Content compiled and edited by:
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Page updated: August 11, 2011

 

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