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Protection Switch Product Introduction
To safeguard the integrity and safety of train operations, it's crucial to strategically install protection switches at key station segments. These switches are engineered to interlock with certain parameters, ensuring secure passage. When positioning, the switch does not automatically engage; instead, it requires either manual or mechanized action and must be securely locked. The system verifies the switch's alignment, ensuring it's secured in an optimal protective position. This alignment allows for a comprehensive lock and signal activation. The protection mechanisms cater to diverse operational demands and can be categorized into the following scenarios:
On a 6‰ downhill gradient, or in cases where train braking is challenging, the first set of turnouts at the inlet is specially designed for protection. These switches can be repositioned towards safety lines, special tracks, or refuge lines.
At the terminal of a 6‰ downhill approach, protective turnouts are employed to prevent trains that might struggle to brake from overshooting signal points or entering incorrect paths. The orientation of these switches can be adjusted to several secure lines, including safety and refuge lines. This mechanism is circuit-driven to ensure precision.
Continuing from a 6‰ downhill approach, a manually operated leveling protection fork can be installed. Although it isn't circuit-driven, its status is still verified as vehicles enter the track. Generally, this configuration is visible in the outer sections of the continuation track, ensuring the alignment of operational pathways.
In areas bustling with shunting operations, especially on lines dedicated to such activities, protection turnouts are pivotal. They prevent shunting trains from inadvertently moving onto main station tracks. Typically, these are oriented towards dedicated safety or shunting lines, ensuring smooth operational flow.
A pair of double-acting turnouts on cross-ferry lines offers mutual protection. When one turnout is reversed, the other must be securely positioned, preventing simultaneous reverse arrangement that might lead to collisions. This protective setup allows for controlled sidestroke maneuvers, minimizing sidestroke impact and ensuring safety along the cross lines.
| 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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