Jackson 6700 Tamper Manual
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Running south through Keighley is a Matisa B41UE - Volker Rail Plant, Tamper. It has just worked off the Keighley & Worth Valley Railway and is running to Ferryhill South Jnc on 3rd February 2017. A tamping machine or ballast tamper is a machine used to pack (or ) the under to make the tracks more durable. Prior to the introduction of mechanical tampers, this task was done by with the help of beaters. As well as being faster, more accurate, more efficient and less labour-intensive, tamping machines are essential for the use of since they are too heavy (usually over 250 kg (551 lb)) to be lifted by hand.
Crack for race driver grid. 2014 Jackson 6700 Tamper. Operator and maintenance manuals included. Barnhardt and Associates a d/b/a of Sterling Rail, Inc.
Whilst also available as a plain tamper with no lifting or lining function this article will focus on the multi function machines. Early machines only lifted the track and packed the ballast. More modern machines, sometimes known as a tamper-liner or tamping and lining machine, also correct the alignment of the rails to make them parallel and level, in order to achieve a more comfortable ride for passengers and freight and to reduce the mechanical strain applied to the rails by passing trains. This is done by finding places where the sleepers have sunk from the weight of the passing trains or frost action, causing the track to sag. The tamper lifts each sleeper and the rails up, and packs ballast underneath. When the sleeper is laid down again, the sagged rails now sit at the proper level.
In cases where frost action has caused adjacent rails to rise higher, ballast tampers can raise rails above their original level to make the line level again. 'Lining' rails doesn't involve ballast tamping, it merely ensures the rails are perfectly parallel and straight as possible. Combining tamping and lining into a single machine saves time and money, as only one machine needs to be run over the track to perform both functions. An tamping machine Tamper machines are built in many different varieties depending on their purpose: • Plain line tamping machines: used on line sections which have no points or other complex track structures, commonly referred to as production machines, generally have fixed tamping head positions • Duomatic • Continuous action tamping machines • Tamping Express • Switch tamping machines: used to tamp switches, crossings and other complex track structures, have movable tamping heads with ability to isolate heads when required.
Tamper in livery Tamping and cleaning operations have the adverse effect of reducing the resistance of the track to lateral movement. The resistance gradually recovers with the passage of trains, but may require a speed restriction imposed for the duration. This ' can be achieved faster and in a more controlled manner using mechanised equipment known as the Dynamic Track Stabiliser (DTS). A DTS will normally be used only after a stretch of track has been tamped and aligned. Has a vibrating unit which holds the track in position and applies a horizontal vibration and vertical load to simulate the passage of trains.
The track parameters (or cross levels), before and after stabilising, can be viewed through bogies in the front and rear. Dynamic Track Stabilising has the following advantages, resulting in enhanced safety: • Increases the resistance of the track to lateral movement • Creates a homegenous bed of ballast • Permits earlier relaxation of speed restrictions • Eliminates non-uniform initial differential settlements caused by rail traffic • Retains correct track geometry for a longer period than was achievable using tamping machines alone • Vibration frequency: 30–35 Hz • Working speed: 1–2 km/h • Vertical pressure applied: 100 kg/cm² The stabilisation achieved by one pass of a D.G.S. Is equal to that achieved by 100,000 tonnes of traffic, and allows a speed restriction of 20 km/h to be relaxed to 40 km/h Dynamic stabilisation is usually avoided on bridges or around overhead structures since there is a risk of damage to foundations. Image gallery [ ] •.