A single turnout is a turnout in two directions. Double turnout means opening a turnout in three directions.
Single-acting turnout is the car control room. Fuck switch 2, it will move switch 2. Double-acting turnout is the No.2 turnout controlled by vehicles, and No.4 turnout will move together, which is double-acting.
The internal lock mode is the switch lock formed by the internal lock of the switch machine. External locking is the external locking of the switch machine, which is generally formed on the rail.
The internal lock device is just some parts that form the internal lock. ZD6 turnout is an internal lock turnout. External locking device? In the same way. For example, ZYJ7 turnout is an external locking turnout, and its external locking device consists of a locking mechanism, a locking trolley and a locking rod. 10. Remember to add points for answering so many questions.