WTL-A220 torque limiter

1. Product Introduction

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​WTL-A220 torque limiteris aIntelligent safety hub for tower cranes(Won the Major Scientific and Technological Achievement Award of Hubei Province) Designed specifically for tower cranes, it builds a millisecond-level safety protection closed loop by real-time monitoring of six parameters including lifting weight, amplitude, height, orientation and wind speed. Its split structure design supports 3-limit / 6-limit custom configuration and integration simultaneouslyBlack box recordwith4G remote transmissionDual-core function.

2. Main functions​

​Six-dimensional perception and triple protection system​

• ​All-domain signal fusion​
  → ​Lifting load(±1% accuracyAmplitude​（±0.1m）｜​Height​（±2cm）
  → ​Azimuth​（0-360°）｜​Wind speed​（0-60m/s）｜​GPS positioning​（±5m）
• ​Active security defenseEarly warning + interception + traceability
• ​Remote cluster control and management​
  "4G transparent transmission of working conditions to the monitoring platform: Remote locking/unlocking.

​3. Typical application configuration

​Standard Deployment Plan for Flat-arm Tower Cranes​

​① Sensor network layout​

• ​Top of the towerBlack wind speed sensor (resistant to typhoons of up to level 16
• ​BoomYellow travel limiter (to prevent the vehicle from overstepping
• ​Hook assemblyAnti-overwinding switch (Ultimate protection for steel wire rope)
• ​Fixed end of steel wire rope:Silver weight sensor (strain bridge type)
• ​Rotary mechanismGrey azimuth sensor (absolute value encoder)

​② Control terminal​

• ​CabBeige main control machine (240×128 Blu-ray LCD screen)

​4. Core advantages​

​The three major technical barriers verified over fifteen years​

​✅ reliability​
-20℃ cold start without delay; 95% humidity anti-condensation circuit; IP64 protection against heavy rain wash
​✅ simplified operation system​
Users can independently complete the relocation and installation
​✅ judicial retroactive capacity​
The aerospace-grade black box supports one-second scene restoration of accidents

​5. Technical parameters

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• ​Performance of the main control machine​
  Screen: 240×128 industrial LCD (visible in strong light)
  Error: ≤±5% FS (National standard requirement: ≤±8%)
  Power consumption: < 35W (AC220V±10%)
• ​Environmental Resistance:​
  Temperature: -​20℃~+60℃​​
  "Protection:​IP64​(Dust-proof/splash-proof
• ​Expansion capability​
  Control output: ≤8 channels of relays (contacts 10A/220V)
  Communication interface: RS485/4-20mA (customization supported)

​6. Installation specifications

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​Industrial compact design​

• ​Chassis Dimensions:(L)​250mm​× (W)​164mm​× (D)​70mm​​
• ​Key structural features​：
  → ​Key area: Right cross key (↑↓←→ Confirm) + independent reset key
  → ​Status light6-color LED indication (overload/full load/height limit, etc.)
  → ​Bottom interface​：
  · Power input: AC220V three-core socket
  · Signal input: 6 aviation jacks (corresponding to sensors)
  · Control output: 8-channel terminal block
• ​Installation method​：
  Wall-mounted: 4×φ5mm holes on the back (hole spacing 220×150mm)
  Bracket: Standard L-shaped adapter plate (anti-vibration design)