Mechanized sleepers change metro lines. (1982)

The train follows the tracks in the subway.

Metro passengers at the stop.

Passengers in a subway train car.

Trackbed under the wheels of a subway train.

Logging.

Softwood is used for sleepers in the subway.

Finished sleepers.

After drying, the sleepers are impregnated with a special composition.

Track measuring car.

The technical condition of the tracks is being recorded.

Areas where replacement of sleepers is necessary are identified.

On the subway, night windows are allocated to perform repair and track work.

A team for manual replacement of sleepers.

Before starting work, each employee must register in a special journal.

The station attendant informs the train dispatcher about the closure of the stage for work.

The power dispatcher removes the voltage from the contact rail, and the attendant turns on the short-circuit breakers.

After making an entry in the journal, the roadmaster receives a copy of the order of the train dispatcher for the right to work on a closed stage for traffic.

Additional lighting.

After the sound signal of the station attendant, workers can enter the tunnel.

The place of work is protected by stop signals.

Manual replacement of sleepers sunk into the concrete base with the use of jackhammers.

The employee is wearing noise-absorbing headphones, respirators and anti-vibration gloves.

It is possible to replace one sleeper per shift with one employee

brigades.

At 4.40, a signal is given about the end of work, double lighting shutdown.

At this signal, the workers must leave the tunnel.

The road foreman makes a record of the completion of work on this stage.

The stop signal is being removed.

At 5.15, the power dispatcher turns on the voltage on the contact rail.

Design bureau.

The complex of machines for mechanized sleeper replacement was developed by the staff of the Central design bureau of heavy track machines of the Ministry of Heavy Engineering of the USSR.

Passengers descend into the subway.

Monument to Alexander Pushkin near the metro stop in Moscow.

The repair train goes to the metro line during the night window.

The structure includes an auto-tire with a cutter and a trellis cutter on the platform towing a sleeper-extracting machine, milling and shpalokleevy.

During the work of the repair staff, the same safety rules are observed as during the work of the team for manual replacement of sleepers.

The mechanisms are powered by electrical panels available in the tunnel.

Mechanism for cutting the middle part of the sleepers.

The device for dismantling the track fastener.

The work of the sleeper machine.

A cartoon explaining the operation of the mechanism.

A machine for milling the sides and the base of the sleeper box.

The components of the machine.

The operator stops the car over the place of work.

The precise installation mechanism combines the body of the lifting and turning mechanism with the axis of the sleeper box.

Rail grapples are activated.

Milling.

The layer of cut concrete is chipped off with the help of discs and the cutters pass unhindered under the rails.

In the same sequence, the nest is prepared in a concrete base on the other side of the path.

Sample of a sleeper socket.

Drawing of a nest for laying sleepers.

Cutting mechanism.

If the sleeper replacement sites are far from each other, the mechanisms are transported by an autoresin.

Shpalokleevaya machine.

Some operations have to be performed with the use of small mechanization.

Workers with the help of a shaker lift the rail to a height slightly greater than the thickness of the sleeper.

Glue plates are placed on the bottom of the sleeper box.

The shpalokleevy machine returns to the place of work.

The gap between the sleeper and the track concrete is filled with cement mortar.

The composition is taken out of the stage.

The repair train leaves the depot.

Panorama of the Kremlin.

Metro bridge.