WTL-A700 amplitude variable torque limiter

1. Product Introduction

​WTL-A700 amplitude variable torque limiter​
The core device for crane safety protection has passedDynamically monitor the Angle, amplitude and load of the boomCalculate the actual torque value in real time. When approaching the critical state, it automatically triggers an audible and visual alarm and cuts off dangerous actions, effectively preventing overloading, overturning and structural damage. The core adopts high-precision sensors and adaptive algorithms to precisely adapt to complex luffing conditions such as port hoisting and wind power installation.

2. Main functions

​Triple safety protection closed loop​

• ​Dynamic torque load limiting​
  Real-time fusion of Angle encoder and pressure sensor (±1% error)
  When approaching the critical value, give an early alarm or forcibly cut off the power
• ​Multi-action interlock control​
  The linkage limits the luffing speed, hook height and rotation range
• ​Full operation cycle traceability​
  Black box storage (accident analysis report can be exported)
• ​Adaptation for extreme working conditions​
  Classification society certified salt spray resistance module (Stable operation in humidity environment)

3. Scope of application

​High-end crane safety essential scenarios

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• ​Heavy hoisting at sea​
  ▶ Full-rotation crane vessels (over 650 tons)
  ▶ Wind power installation platform (Dynamic Wave Compensation)
• ​Large-scale port machinery​
  ▶ Bridge ship Unloader (Frequent luffing + Heavy load)
  ▶ Portal crane (Large Span luffing)
• ​Special Engineering Deployment​
  Tower cranes for super high-rise buildings (over 300 meters)
  ▶ Floating crane jacking operation (Compensation for Tidal influence)

4. Model description

​Micro and Special Torque Safety Two-Party Case​

​① WTL-A700 Flagship model​

• ​Monitoring dimensionWeight + Angle + amplitude + wind speed + pressure
• ​Control accuracyThe systematic error is ≤5%
• ​Interactive configurationIndustrial touch screen + waterproof physical keys
• ​Certification level: Through classification societies seriously

​② WTL-A200 Economy Type

​

• ​Monitoring dimensionWeight + Angle (dual signal input)
• ​Basic protectionOverload alarm + automatic power-off
• ​Installation featuresWall-mounted/built-in (AC220V or DC24V)
• ​Certification levelMeet the requirements of national standards

5. Core advantages

​Six major technical barriers define industry benchmarks​

​✅ dynamic adaptive algorithm​
The floating crane operation automatically compensates for the wave inclination Angle, and the wind power hoisting matches the blade swing trajectory in real time
​✅ millisecond response mechanism​
From sensor collection to power cut-off
​✅ environmental tolerance​
Verification of cold start at -420℃ and full-load operation at 60℃
​✅ zero false alarm technology guarantee​
Original vibration filtering algorithm
​✅ scalable iot architecture​
Reserve 5G/ fiber optic interfaces for seamless integration with the smart construction site system

6. Option Guidance

The simple option method is as follows: For large-scale projects, WTL-A700 is recommended, which supports future intelligent upgrades. For medium and small-sized equipment such as medium and small-sized truck cranes ‌ and conventional tower cranes ‌, WTL-A200 can be chosen for those who pursue cost performance

​Precisely match according to the working conditions and requirements​

​The Iron law of Selection​

1. Marine-related projects →It is mandatory to obtain CCS classification society certification​
2. Lifting height > 150 meters →Specify the A700 wind speed linkage module​
3. Daily amplitude variation > 200 times →Choose the A700 anti-fatigue version​

7. Engineering cases

​A model of heavy hoisting at sea​

​A 1,200-ton crane vessel in Haixi, Qingdao

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• ​ChallengeDynamic hoisting of wind power foundation piles under sea conditions of level 7
• ​"Configuration"​：
  ▶ Dual-angle sensors compensate for hull swaying
  The wave prediction algorithm adjusts the torque 3 seconds in advance

​Hengtong Yihang 650-ton full-rotation crane vessel

​

• ​Pain pointCollision avoidance protection in narrow port areas
• ​"Plan"​：
  The linked electronic fence restricts the turning range
  ▶ Automatically decelerate when the obstacle distance is less than 5 meters