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Introducing Our State-of-the-Art Protection Switch Products
To safeguard the integrity of train operations, certain sections of railway stations require the strategic installation of protection switches. These switches, activated through specific conditions, play a vital role in ensuring operational safety. Typically, these protection switches are not arranged automatically; rather, they demand manual or belt manipulation and must be securely locked. Their position is verified through circuit checks, assuring the turnout is correctly aligned and locked in the designated protection position. This configuration enables the seamless locking of the approach and the activation of signals. By confirming the precise positioning and locking, we ensure the system's readiness to deliver complete approach locking and signal activation. Protection of turnouts, tailored to different usage and safety requirements, can be classified into the following scenarios:
When dealing with a 6 ‰ downhill inlet, or an inlet that challenges train braking, the first group of turnouts is engineered specifically for protection. These protective turnouts, when activated, guide the train towards designated areas such as safety lines, special lines, or refuge lines, ensuring controlled and safe transitions.
At a 6 ‰ downhill continuation of the approach terminal, a protective turnout is essential to prevent trains from overshooting the outbound signal machine. This protective measure ensures that the train, even with reduced braking efficiency, remains on track. The turnout positioning allows access to safety lines, dedicated lines, refuge lines, and beyond, all controlled via circuit operation.
For a 6 ‰ down ramp continuation at the approach terminal, a manually-operated leveling protection fork may be installed. Despite not being circuit-driven, this fork undergoes thorough position checks. Positioned at the terminal's outer display, it aligns with visual signals, ensuring safety. The continuation road, though not visible, is reliably indicated by light signals, enhancing protection for incoming trains.
In scenarios involving dedicated lines and bustling shunting operations, protection turnouts are critical. Located at the interface of station lines and main access points, these turnouts prevent shunting trains from inadvertently entering station lines. Typically, these protective turnouts are aligned with dedicated safety lines or shunting pull-out lines, ensuring safety during busy operations.
Double-acting turnouts, set in pairs across cross-ferry lines, are designed for mutual inspection and protection. When one group is in reverse, the other must securely position itself, preventing a cross-collision at the intersection. This setup ensures that even during a sidestroke, the system can buffer and reduce sidestroke intensity, minimizing potential damage.
| Number | Model | Gauge(mm) | Frog No. | Curve | Radius(m) | Total Weight(kg) |
| 1 | DK612-2-3 | 600 |
No.2 | 3 | 400 | 311 |
| 2 | DK612-3-6 | No.3 | 6 | 6100 | 515 | |
| 3 | DK612-4-12 | No.3 | 12 | 6800 | 573 | |
| 4 | DK612-5-15 | No.5 | 15 | 7400 | ||
| 5 | DK615B-2-3 | No.2 | 3 | 4000 | ||
| 6 | DK615B-3-6 | No.3 | 6 | 6100 | ||
| 7 | DK615B-4-12 | No.4 | 12 | 6800 | ||
| 8 | DK615B-5-15 | No.5 | 15 | 7400 |
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