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What is an Anti Two Block Warning System?

Anti two block (ATB or A2B) warning systems are used to warn or prevent the crane operator from two-blocking the crane. 

Two-blocking is a dangerous condition where the hook block is raised until it contacts the boom tip. 

Without a proper crane A2B system, a two-block can cause expensive damage to the crane boom, personnel and surrounding property.


Why Choose WTAU brand anti two block warning system?

An Anti Two Block Warning System is an integral safety device for your crane. 
The system helps prevent the crane operator from having a two-block accident.  
This is where the cranes hook block is raised to a height where it comes into contact with the boom tip. 

This precarious situation can cause the cranes boom to bend and to break the hoist line causing some serious damage to the property and lives in the vicinity. We urge all crane operators to invest in a crane two-block system. 

Our Anti Two Block Warning Systems come with audio and visual alarms along with outputs for lock out controls.  We have ATB systems to fit any type of crane. 

Applications



Company Information

Weite Technologies focusing on crane lifting equipment safety management since 2002,our own brand is WTAU,China Top 3 brand OEM manufacturer of load moment indicator system.

We help protect cranes and lifting equipment under safety working condition with customized WTAU Load  Moment Indicator(LMI) System, Crane Management System,Safe Monitoring System, Anti Collision System, Crane Remote Monitoring &Management Platform,Marine CCTV Camera System, Overload Limiter, length angle sensor, load cell sensor, Anemometers, A2B anti two block device etc.

Nowadays, WTAU products are widely used in marine,electrical, chemical, steel, metallurgy, construction, ports and other industries, and have been wide spreaded to over 60 countries and regions.
 

FAQ
Q1:Who are you?
A1:This is Cherry from Weite Technologies Co.,Ltd. I am the Crane Safety Manager.

Q2: What does your company do?
A2: We assist crane owner and operators to keep their crane fleets under safe working conditions and zero accidents. No matter Crawler, Mobile, Tower, Gantry, Overhead or Offshore Cranes and so on.

Q3: What are the products?
A3: Safe Load Indicator(Load Moment Indicator or Crane computer), Crane Monitoring System, CCTV/Camera System, Load cell, Load pin, Length Angle sensor, Anemometers, A2B limit Switch, 3-color Alarming light,etc.

Q4: Is the company well-reputed?
A4: It is a China Top 3 brand focusing on Crane Safety Protection Equipment. We are also Safety Partners for Global Top 100 Crane Owning Companies.

Q5: My Crawler Crane's display could not show anymore, can you assist us? 
A5: Yes, we can replace a new one for you with WTAU LMI system, which will make your old cranes back to normal working again.

Q6: What are the components of your LMI system?
A6:Pls refer to the below pic for compulsory and optional parts. (display, control box, load sensor, angle sensor, 3-color alarm light, A2B limit switch, anemometer)

Q7: How you assure the quality?
A7: The Product Warranty for the total item is 12 months. Any problem after installation, we will change the new one for free.

Q8: How to install the LMI? 
A8: English User Manual(include all the details of each item) will be offered for installation and trouble shooting(refer to the pic below). Also free Remote Instant Technical assistance would be offered by our english engineers. Or we can send our engineers to assist you locally(for a fee).

Q9: How to contact you?
A9: Send your inquiries to us, will reply you within 24 hours.

Q10: How much is your LMI system?
A10: Send me the crane model(like Kobelco 7055, Sumitomo SCX500), hook number, working conditions(Luffing Tower Working Condition, Pilling) and special requirement and the load chart . Your contact info is a must.

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