Underground loading, haulage and rock stabilising equipment
Rock-Machines Sweden AB manufactures and markets the Hägglunds range of specialised machinery for fast and efficient tunnelling. The Hägglunds high speed tunnelling method uses both rail-mounted and rubber-tyred loaders and shuttle cars, and is used in tunnelling and infrastructure projects all over the world. Technical development of the product range has continued, and we now offer cable bolting equipment for mechanised rock reinforcement.
Rail-borne continuous loader models Häggloader 8HR2, 8HR5.
Rubber-tyred continuous loader models Häggloader 10HR, 12HR.
Crawler-mounted continuous loader model Häggloader 14HR.
Rail-borne rock haulage systems Shuttletrain HRST 90, HRST 115, HRST 140
Rock support system Cable Bolting, mounted on LHDs or trucks.
Railborne
Loading and Transport in Tunnels
Häggloaders for railborne loading are manufactured in two different sizes.
The smaller 8HR2 comes in versions to work in 2.0, 2.85, 3.4 and 4.0 m-wide
tunnels. The larger 8HR5 will handle tunnel widths from 5.0 to 6.2 m. Alternative
versions are available upon request. Both come standard with our unique digging
arm system which, in conjunction with the built-in conveyor, enables the Häggloader
to load continuously. Both loaders can also be fitted with a back-hoe digging
system, which is particularly useful when handling soft rock or when cleaning
the tunnel floor prior to erecting arches or installing lining.
B = Load car HRST-CLE
C = Train cars HRST-CTE
D = Drawbar for towing
E = Drawbar between Shuttlecars
F = Drawbar for towing/unloading
G = Wear plates 500 HB
H = Track gauge determined for each application
J = Voltage/frequency of electrical system determined for each application
The Häggloader is a multi-purpose machine which can also be used for lifting rails into place, handling an Omega rail-extension system, and digging trenches in the tunnel floor.
Loading capacity of the 8HR-2 version is on average 2.5 cu m/min loose rock, but can be increased to between 3.0 - 3.5 cu m/min depending on the height of the blasted muck-pile.
For the larger 8HR5 the loading capacity is 6.0 - 9.0 cu m.
The Shuttletrain is designed for transport in tunnels and drifts and is composed of several Shuttlecar units linked together. A conveyor in the base of each car transfers the rock along the train, from the loader in the front to the last car, to fill the complete train. No car-shunting is needed. By matching the number of cars in one train to the volume of the blasted rock, the complete round can be removed by one train set.
For trackless tunnelling we offer the 10HR and 12HR Häggloaders. Both are electro-hydraulically powered with a Deutz diesel engine for transport and utilise the same digging arm system and conveyor as the 8HR2 and 8HR5 respectively. Our rubber tyred Häggloaders will load your choice of transport vehicle. The 10HR is aimed at a 3.4 - 4.0 m-wide tunnels and the 12HR handles 4.5 - 6.2 m-wide tunnels. Just like our railborne loaders, these can also be fitted with a backhoe loading system.
Built around the same digging system and conveyor as our 8HR5 and 12HR Häggloaders, we now offer a crawler based loader for tunnels from 4.5 to 6.2 m wide. The 14HR comes with either the standard dual digging blades or a back-hoe digging system. It is electrohydraulically powered for production and utilises a Deutz diesel engine when moving over long distances. This loader can also be fitted with a pony track system to allow the machine to be towed on rails.
Our Mechanised Grouting and Cable Insertion System (MEGCIS) can be mounted on your choice of carrier, truck or bucket loader. This equipment inserts steel cable and grout into a pre-drilled hole up to 40 m depth to stabilise tunnel roofs or hanging walls. The MEGCIS boom positions the hose, and grout is mixed on the unit and pumped into the hole. The steel cable is pushed in and cut by the feeder.
For more information on the Rock-Machines range visit our website www.rockmachines.se or speak to Jan-Olof Jägbring on +46 660 29 57 00 , fax +46 660 29 57 09, e-mail info@rockmachines.se
Click here for Rock-Machines project news as reported by tunnelbuilder.com
Rock-Machines Sweden
AB
Box 374
Ångermanlandsgatan 17
S-891 27 Örnsköldsvik
