Pull-Wire Encoder: Domestic Solutions and Industrial Applications

In industrial automation, logistics conveying, and construction machinery,Pull Cord EncodersA critical sensor for measuring linear displacement, it accurately converts linear motion into electronic signals, providing real-time position information to control systems. This article covers: Official content released on the official websiteSuitable for engineering selection and technical reference.

One,Pull Cord EncodersIntroduction

The draw-wire encoder connects to the measuring shaft via a spring-loaded cable or rope, outputting an electrical signal proportional to the travel distance. Core features:

• Long-stroke measurementSupports linear displacement ranging from several meters to tens of meters.
• High-precision feedback：Achieves millimeter-level or even higher precision
• Suitable for multiple scenariosIndustrial production lines, construction machinery, logistics conveyor systems

Domestic draw-wire encoders deliver precision and reliability while enabling local sourcing and customization services, thereby enhancing engineering efficiency.

II. Advantages of Domestic Production

Domestic draw-wire encoders offer the following advantages in design and production:

• Flexible trip lengthFrom 1 meter to 50 meters and beyond
• Multiple output interfacesSSI, RS485, CANopen, 4–20mA
• Diverse installation methodsAdaptable to different mechanical structures and installation requirements
• Protection rating can be customizedDustproof, waterproof, and corrosion-resistant, suitable for complex environments

Domestic production enables rapid response to project requirements, shortens delivery times, and enhances localization rates and project reliability.

III. Typical Application Scenarios

Pull-string encoders are widely used in:

• Linear Displacement Measurement for Industrial Automation Production Lines
• Travel Feedback for Logistics Conveying Systems and Port Machinery
• Displacement Monitoring for Hydraulic Cylinders or Guide Rails in Construction Machinery
• Linear Measurement and Control for High-Safety or Explosion-Proof Environments

In these scenarios, the precise linear feedback provided by draw-wire encoders is central to ensuring the system's efficient and stable operation.

IV. Key Selection Criteria

When selecting a draw-wire encoder, the following factors should be considered:

1. Travel Distance and PrecisionEnsure compliance with system measurement requirements.
2. Communication InterfaceCompatible with control system protocols
3. Mechanical Installation MethodFlange, bracket, and cable layout adapted to site conditions
4. Environmental AdaptabilityDustproof, waterproof, corrosion-resistant, vibration-resistant
5. Domestic Production and Customization CapabilitiesMeet special engineering requirements

V. Summary

Cable encoders serve as critical linear displacement measurement components in industrial systems. Through domestic R&D and manufacturing, these products deliver high precision, exceptional reliability, and flexible customization, providing robust solutions for automated production lines, construction machinery, and logistics conveying systems.