Main Structure Principles - Launch TLT235SC User Manual

2.2 Main structure principles:

Lifting mechanism: Each column is installed
with a hydraulic cylinder, when hydraulic oil is
pressed from power pack into the lower
chamber of main cylinder, piston rod moves
upwards to drive the upward movement of
carriage through leaf chain.
Load supporting mechanism：When vehicle
drives into the working area, adjust the angle
and telescopic length of arms to make lifting
pads at an effective load supporting position
that contact with vehicle, and then adjust the
lower screw's height of lifting pad to make it
applicable for vehicles with different chassis.
Balance mechanism： In order to keep machine
balanced during lifting and lowering, two
carriages are interconnected and forced to
move synchronously by two wire ropes. If the
right and left carriages and arms are not at the
same level, adjust the end nut of wire rope and
pull wire ropes tight to make arms leveled.
Manual safety locking mechanism: the safety
locking plates are installed on the two
carriages and the toothed bar plate is welded
TLT235、TLT240 Economical Two-post User's Manual
3563mm(140.3in)
2415mm(95.1in)
Fig.3b
on the internal wall of the column. During the
lifting of the carriage, the safety locking plate
goes up against on the toothed bar plate under
the tension of spring. When the carriage stops,
the safety locking plate opens and then is
engaged in the toothed bar slot to ensure the
carriage will not go down; when the lowering
operation is required, just raise the carriage
upward a little to loosen the safety locking
plate from the toothed bar slot, and then
manually pull the steel wire rope to let sliding
plate lift up the safety locking plate so that the
safety locking is released, the carriage can be
lowered down. Because the manual safety
locking device are installed on the two
carriages, double safety protection is provided;
therefore, to disengage the safety locking, the
steel rope on the two carriages shall be
respectively pulled. To prevent the vehicle
from slipping off, the swing arm assembly
employs positioning mechanism, makes the
swing arm capable of automatic locking during
operation.
Safety lock scope: Safety lock mechanism is
effective when the front end of carriage is
between 450mm and 1900mm high above the
ground.
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