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The Flow-line Method and Characteristics of Double Block Sleeper

The flow-line method adopts the combined double-block sleeper model and produces the sleepers on the assembly line according to the prescribed technological process.

To make a double block sleeper, a steel wire or bar is installed in a removable modular sleeper model, stretched, then filled with concrete and vibrated on a specially designed long gauge vibrator. After the vibration is completed, it is moved into the steam curing pit for wet and hot curing. After the concrete has hardened and reached a certain strength, loosen the steel wire or reinforcement and release the mold. This technology is mainly used in the production of prestressed concrete twin block sleeper in China.

The Flow-line Method and Characteristics of Double Block Sleeper


The Flow-line Method and Characteristics of Double Block Sleeper


The Flow-line Method and Characteristics of Double Block Sleeper


The process characteristics of the current sleeper assembly process in China are as follows:

1. Using the 2x5 combined model, 10 double-block concrete sleepers can be formed at one time. 2. In order to adapt to the 2 x 5 combined model, 1 x 5 combined vibration table is adopted, which is equivalent to each pair of parallel double-block sleeper cloth! A unit countertop.
3. The molding of concrete double-block sleeper adopts the technology of secondary vibration.
4. The twin-block sleeper assembly line generally adopts roller conveyance, forming an annular closed technological process, realizing the continuity and rhythm of the twin-block sleeper production process, and reducing the non-productive transportation in the workshop.
5. The current double-block sleeper assembly line has gradually developed into a multi-functional assembly line.


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