Elevator Safety Linkage Device Suppliers

Industry Knowledge: Elevator Safety Linkage Device

1. Elevator Safety Linkage Device Technical Specifications

The elevator safety linkage device is a critical safety component that monitors and responds to abnormal elevator conditions. Below are the technical specifications for different models in the series:

2. The "Nerve Center" of an Elevator: Working Principle and Core Functions

The elevator safety linkage device acts as the "nerve center" of the safety system, aggregating information and issuing commands. It operates on a "fail-safe" principle: when any safety component detects an abnormality, it immediately cuts off the main power supply through the safety circuit. This article highlights its interlocked functions in critical scenarios like overspeed, rope breakage, and unintended car movement.

Key Parameters:

• Contact Capacity: Determines the maximum current it can safely interrupt
• Actuation Sensitivity: Response time typically in milliseconds
• Insulation Resistance: Usually required to be > 100MΩ
• Anti-interference Capability: Stable operation in complex electromagnetic environments

Company Context: Founded in 2004, Shanghai Liftech Elevator Accessories Co., Ltd. specializes in elevator safety components. With nearly two decades of expertise, Liftech understands the critical role of safety linkage devices, providing reliable "safety brains" to major elevator brands worldwide.

3. Integrated Design and Selection Guide for Modern Applications

Modern safety standards require multifunctional integration. This article explores how safety linkage devices integrate multiple protection functions like UCMP, overspeed governor, and buffer protection. The selection guide helps engineers choose the right device based on elevator speed, load, and control system type.

Selection Criteria:

• Elevator Rated Speed: ≤ 1.0 m/s to ≤ 6.0 m/s options
• Elevator Rated Load: From 320kg to 5000kg capacity
• Level of Integration: UCMP, rope breakage, buffer linkage functions
• Installation Space: Compact designs for MRL elevators

Company Context: Shanghai Liftech Elevator Accessories Co., Ltd. offers a diverse product line of safety linkage devices, from standard to high-speed and MRL models, meeting customized needs with strong R&D capabilities.

4. Installation, Commissioning, and Maintenance Best Practices

Proper installation and maintenance are crucial for safety device performance. This guide covers mechanical calibration, electrical wiring standards, safety circuit testing during commissioning, and key maintenance points to ensure optimal performance throughout the product lifecycle.

Maintenance Parameters:

• Installation Precision: Verticality and levelness requirements
• Contact Specifications: Opening distance and overtravel settings
• Safety Circuit Testing: Regular resistance and functionality tests
• Test Frequency: Quarterly or semi-annual simulated actuation tests

Company Context: Shanghai Liftech Elevator Accessories Co., Ltd. provides detailed installation and maintenance manuals, with 20 years of experience offering professional training and support to ensure correct product usage.

Frequently Asked Questions (FAQ)

What is the primary function of an elevator safety linkage device?

The primary function is to monitor safety conditions and interrupt the elevator's safety circuit upon detecting a fault (like overspeed or rope breakage). This action cuts power to the motor and brake, immediately stopping the elevator to prevent accidents. It acts as the central coordinator of the elevator's passive safety systems.

How does a safety linkage device differ from a simple safety switch?

A simple safety switch monitors a single condition, while a safety linkage device is an integrated assembly coordinating signals from multiple safety components. It houses the logic and electrical contacts that manage the entire safety circuit, making it a more complex and critical system component.

Is a safety linkage device required for all elevators?

Yes, modern elevator safety codes worldwide (EN 81, GB 7588) mandate a safety circuit managed by a system equivalent to a safety linkage device. The exact form may vary, but the function of reliably interrupting power based on multiple safety inputs is a universal requirement for all modern elevators.

What is UCMP, and is it part of the safety linkage device?

UCMP (Unintended Car Movement Protection) prevents the car from moving when doors are open. In many modern designs, the UCMP system's logic and triggering mechanism are integrated into or work with the main elevator safety linkage device, making it a key function of the overall safety system.