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Introduction to the Protection Switch Product
To safeguard train operations, protection switches must be strategically installed at specific station locations. These switches ensure seamless safety by engaging under predetermined conditions, effectively maintaining system integrity. These critical switches must remain outside of main track arrangements, with operations relying on belt or manual manipulation. Proper locking mechanisms are crucial, as the circuit verifies turnout positions and ensures they remain locked in a designated protective state. Once verified, the system can enact complete locking and signal opening processes. Depending on usage and protection necessities, turnout protection can be categorized into several distinct scenarios:
On a 6‰ descent at the entry point (or slightly less if train braking challenges exist), the first set of turnouts is meticulously engineered to protect. These turnouts seamlessly transition to safety positions, including a designated safety line, special rail line, or refuge line, providing enhanced security.
Continuing from a 6‰ downward gradient to the terminal approach, protective turnouts are vital to prevent trains from overshooting the outbound signal machine due to insufficient braking. These protective turnouts can strategically position themselves to align with safety lines, dedicated lines, or refuge lines, ensuring optimal entry and exit point management. Circuit operations power these turnouts.
At the terminal approach's continuation along a 6‰ slope, a levelling protection fork can be installed. Although it operates manually, it ensures thorough position verification for cars entering. This sophisticated setup features external road displays, guiding vehicles by illuminating light belts and signals, enhancing operational clarity.
Within the realm of dedicated lines and bustling shunting operations, turnouts are crafted as protection turnouts. Their purpose is to avert unintended transfers to station lines during shunting maneuvers. These turnouts are strategically oriented towards designated safety lines or train pull-out lines, safeguarding operational fluidity.
Two sets of double-acting turnouts, integrated into the cross-ferry line, are engineered for mutual inspection protection. When one set assumes a reverse position, the other must remain positioned for safety, averting potential 'cross' collisions. This design effectively minimizes sidestroke losses during cross-ferry operations.
| 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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