Traction & Brake Control (TBC)

 

Traction & Brake Control (TBC) is the safety and efficiency system developed for Toyota's reach trucks, and includes the following functions:

A. Traction Control

Upon detecting wheel spin when handling heavy loads, the reach truck adjusts the drive motor speed to help reduce the risk of further spinning. The reach truck can thus make a steady start without swaying even on wet or slippery surfaces.

Without TBC

Start

TMHC_tbc_start_without.gif

Switch Back

TMHC_tbc_swich_without.gif

 

The drive wheel spins when the reach truck starts or switches back.

 

With TBC

Start

TMHC_tbc_start_with.gif

Switch Back

TMHC_tbc_swich_with.gif

 

The reach truck can make a spin-free start and switchback

 

 

B. Front-Assist Brake System

Upon detection of skidding of the rear wheel, the reach truck increases the braking force of the front-assist brakes. Since the braking force is also applied to the front wheels, the truck can stop accurately without skidding. The assist brakes operate both in normal braking and in high-power braking.
TMHC_tbc_sw02.gif

 

Without TBC

TMHC_tbc_brake_without.gif
Skidding and inaccurate stopping may occur when stopping with a heavy load.

 

With TBC

TMHC_tbc_brake_with.gif
The reach truck stops accurately by front and rear wheel braking.

 

 

C. Stable Suspension Control

When the reach truck makes a sharp turn at high speed or its mast is tilted too far forward at a high mast height, its stability decreases. TBC-equipped reach truck has a swing lock cylinder and it locks the operation of suspension whenever detecting decrease in stability.

 

Without TBC

TMHC_tbc_sw03_a1.gif
TMHC_tbc_sw03_a2.gif
Unstable behavior occurs when the reach truck makes a sharp turn or its mast is tilted excessively at high mast height.

 

With TBC

TMHC_tbc_sw03_b1.gif
TMHC_tbc_sw03_b2.gif
The reach truck locks its suspension whenever sensing decrease in stability.