Forestry Electronic System

Fortronics Ltd designs, manufactures and markets forestry electronic (radio controlled) chokers for timber recovery.
Our systems are proven to contribute benefits to the worldwide logging industry.
Radio Controlled Chokers
Logging Chokers
Electronic Choker
 
 
 
Home > The Choker System

The Choker System

Harvesting timber in New Zealand forests is as demanding as anywhere in the world. Our terrain ranges from even flats to steep hillsides, with gullies, waterways and rugged landforms creating challenges.

Our electronic choker has been designed to make a difference to the safety and efficiency of timber recovery between felling and yarding.

It works by giving forestry contractors a remote-release option that allows the operator to be safely separated from the most hazardous part of the recovery process.

With the simple press of a button, the choker releases the strop as soon as the log has been dragged to its required position. This removes a man from a dangerous situation among unstable timber, and leaves the choker ready for the next haul.

System Overview

Specifically designed for harvesting timber in difficult hill country, the choker is used to attach a hauling strop to felled logs, ready to drag them to the yarder for trimming and transportation.

The choker comprises the most advanced engineering in its class. The electronic-release switching mechanism is encased to protect it from impact and weather damage, and ensure its reliability, even the harshest conditions.

The Choker

Fortronics Electronic Chokers are radio-controlled devices. A UHF radio frequency digitally coded signal is used to command a set of chokers. Each choker is identified by a group code number and a choker ID number.

Main Transmitter:

Up to eight chokers can be commanded to release collectively in any combination or individually by simply turning on the appropriate switch and pushing the release button momentarily.

Portable Transmitter: – (two supplied)

Holding the release button down for more than three seconds will release all chokers at once.

 

Choker Electronics:

A valid digital signal activates a servo motor which then operates a trigger mechanism that unlatches the spring-loaded locking pin.

Every two seconds, the inbuilt transmitter sends out data bursts that allows remote monitoring of the choker battery status. These bursts are also the tracking signal which reveals the choker’s location.

Choker Tester:

This hand-held device remotely monitors an individual choker status by indicating the battery condition and the verification of a tracking signal.

Batteries and Servo Motors:

Both are plug-in devices, making replacement a simple task.

Locating Lost Chokers:

A sensitive UHF receiver connected to a directional yagi aerial is the basis of the tracking system. The receiver sounds a signal when the aerial is pointed towards the lost choker. This tracking system is easy to use and results in the easy location of a buried choker.

 

As price will fluctuate with currency levels, please contact us on +64 6 843 6100 for our latest price.