Secure Remote Control Systems

Push-Pull Cable Secure Remote Control Systems

2025-09-08 By Alexander Regenhardt | Translated by AI 2 min Reading Time

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As purely mechanical remote controls, the bidirectional push-pull cables from Ringspann RCS prove effective in many emergency and safety systems. Compared to rigid rod constructions, they are often more space-saving and easier to install.

During the maintenance and safety inspection of rail wagon bogies, a 278-V remote control from Ringspann RCS serves as a mechanical emergency release cable for the parking brakes.(Image: Ringspann RCS GmbH) — During the maintenance and safety inspection of rail wagon bogies, a 278-V remote control from Ringspann RCS serves as a mechanical emergency release cable for the parking brakes.
(Image: Ringspann RCS GmbH)

Alexander Regenhardt is a freelance technical journalist

Unlike traditional Bowden cables, the push-pull cables from Ringspann RCS work bidirectionally. This means they can transmit both pulling and pushing forces and movements. This is particularly crucial in emergency, maintenance, and safety systems that require high functional and kinematic reliability for manual triggering, locking, positioning, and operation. Equally important is the fact that, as purely mechanical remote controls, they are entirely independent of any power or media supply.

In addition to many other market segments, the company's push-pull cables are used in railway technology for wagon manufacturing and in the field of tensioning technology. Internationally widespread applications include ventilation systems for parking brakes, emergency locking and unlocking for automatic doors, and load break switches on overhead lines.

Gallery

Robert Lacko: "Many of our push-pull cables repeatedly demonstrate their performance in extremely demanding field tests, where they sometimes complete over 100,000 switching cycles without any issues."(Image: Ringspann RCS GmbH)

The push-pull cables from Ringspann RCS meet a variety of technical industry and product standards and are often developed as customized solutions.(Image: Ringspann RCS GmbH)

Depending on the application, Ringspann RCS also equips its push-pull cables with integrated spring returns and suitable T-handles.(Image: Ringspann RCS GmbH)

In overhead or open-line technology, Ringspann RCS's push-pull cables are entirely dedicated to occupational safety. As a central component of the load break switch, they ensure that all maintenance work on railway power system overhead lines and tracks can be carried out without health risks for the MRO personnel.

For Demanding Environmental Conditions

A push-pull cable that is now frequently used is a special version of the type 284-H from Ringspann RCS. This is a high-quality cable system with stainless steel end pieces and a PTFE-coated core, which proves to be extremely smooth-running and permanently reliable at temperatures ranging from -58 °F to 194 °F. Its sheath is made of a material with exceptionally high UV resistance.

“This push-pull cable—like other variants—has successfully passed extremely demanding field tests. It completed over 100,000 switching cycles without any issues,” reports Robert Lacko, Sales Manager at Ringspann RCS. The operator of the railway power system also benefits in other ways from using this mechanical remote control system: unlike the rigid, installation- and maintenance-intensive hinge rods previously used for load disconnection, the push-pull cable proves to be a much more flexible alternative. It is easy to install, can be freely routed, and requires no maintenance.

Safe And Easy Release

Another application for Ringspann RCS's force-transmitting cable systems is in the routine maintenance and safety inspection of train bogies. Here, a type 278-V remote control is used as a mechanical emergency release cable for the parking brakes. It is required to manually release the automatically operating parking brakes for service purposes and shunting in workshop mode. “For safe and easy operation, the pull cable can optionally be equipped with an integrated spring return and a matching T-handle,” explains Robert Lacko.

Thanks to its high flexibility, the 278-V remote control could also be easily integrated into the existing disc brake construction of the bogie. The minimal dead stroke also proved to be an advantage.

Integrated Emergency Solution

The force cable systems from Ringspann RCS have almost become a standard solution for the emergency releases of automatic train doors. In many cases, a high-quality Bowden cable is directly installed in the door mechanism. It ensures that the door can be locked or unlocked in case of an emergency or technical malfunction. “Even in this railway application, our cable systems impress with very low friction values, maintenance-free operation, and long service life,” says Robert Lacko.

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Push-Pull Cable Secure Remote Control Systems

For Demanding Environmental Conditions

Safe And Easy Release

Integrated Emergency Solution

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