Ballast sealing machine - a self-propelled traveling machine for sealing ballast in sleepers, on the shoulders and slopes of the ballast prism. It is used in railway transport in the construction, repair and maintenance of the railway track . The purpose of the ballast sealing machine is to stabilize the track grid . Using the machine significantly reduces the time limit for speeding trains on new or refurbished tracks.
Content
Appearance History
The first ballast-sealing machines of the USSR were created in the early 1970s .
Design and Operation
The ballast-sealing machine is a two-axle crew equipped with a diesel engine with mechanical transmission of movement to wheelsets and a hydraulic drive , which ensures the movement of the ballast-sealing machine along the stage with a speed of up to 100 km / h and at low speeds in the operating mode, when the machine stops at every second to compact the ballast sleepers. Ballast sealing machine has several working bodies:
- ballast seals in sleepers
- ballast and shoulder slope seal
- brush assembly for sweeping ballast residue from the rail-sleeper
Ballast compaction comes from the dynamic effects of vibrators and the static loading that the hydraulic cylinders provide. To stabilize the rail-sleeper grid, a track stabilizer is also used, but a ballast sealing machine is preferred on sections of a railway track with a crutch .
BRAD
On UK railways, a compact ballast sealing machine of the BRAD type is used [1] . It knocks out the newly laid sleepers with eight elliptical strikers vibrating at a frequency of 46 Hz. A machine weighing 6 tons, like the other machines included in the complex, is equipped with four wheels with pneumatic tires and easily enters the rail track in the right place and leaves it. It has high performance, is flexible in operation and is ideal for performing tamping operations in conditions where a ballast prism around new sleepers is already formed and requires only compaction.
Notes
- β World Railways-online Archived on May 3, 2007.
Literature
- Rail transport: Encyclopedia / Ch. ed. N. S. Konarev . - M .: Big Russian Encyclopedia , 1994. - S. 36. - ISBN 5-85270-115-7 .