Applicable range and application
In the QT5 series control unit (hereafter
refers as control unit) with the
is suitable in AC 50HZ voltage
660 under to respectively consider and the DC voltage 440 under
respectively considered the power circuit or controls in the line,
the
control lifts heavy objects the transport machinery and in the
similar
condition electric appliance equipment electrical machinery starts,
the velocity modulation, applies the brake with the commutation
1、The control unit is suitable in the following environment：
a、The surrounding air temperature does not surpass +40 ℃, in 24
hours
cyclical average temperatures do not surpass +35 ℃, the surrounding
air temperature is not lower than -5 ℃.
b、The altitude above sea level does not surpass 2,000 meters.
c、The installation site air is clean, the relative humidity does
not
surpass 50% under +40maximum temperatures, when compares the low
temperature, the permission has the great relative humidity (for
example when 20may be 90%). But should consider to as a result of
the humidity change, possibly accidentally produces mildly congeals
the dew.
d、The installment spot highest vibration condition is: When 5~13HZ,
the
displacement is 1.5mm; When 13~150HZ, the vibration acceleration is
10m/S2.
e、The power supply electrical network quality is qualified, the
coil in
voltage undulation scope does not surpass the rated voltage value
10%.
f、The vertical installment, the gradient does not surpass 5
g、Installs reliably, cannot the financial budget year in which one
was
born as represented by an animal and vertical beats in the main
engine
work process regarding the main engine level migration.
2、The control bench model and its the meaning are as
follows：
The QT5 series crane control unit by the
protected type about
control box, the active type chair and treadons the type switch to
be
composed, the outer covering protection rank is lp30.
The control bench uses the contact group to altogether have
exchanges
10 peacefully, 32 peaceful, 63 is peaceful and so on three kind of
specifications.
The control box divides three parts: The operation, the
transmission
system department, the cam, the contact systematic part and the box
body are partial.
The control handle is a sphere. In order to avoid because the hoist
crane vibration and the accident collision causes the control
mechanism misoperation, this handle has the zero position
self-locking
installment. When operation only must raise grasps the hemisphere,
can
enable the handle (set lever) to leave the zero position, then
operates. But the handle once leaves the zero position, then the
hemisphere mentions the handle under again clockwise rotation,
causes
the hemisphere to be fixed is mentioning the position, causes the
zero
position self-locking installment not to have an effect.
The mechanical drive department loads separately on the box body in
the cover, this transmission system divides into the linkage handle
control mechanism, the grab double handle control mechanism, the
main
and secondary or asst hook double handle control mechanism and the
single handle control mechanism, the handle movement all is with
the
straight tooth garden bevel gear transmission cam shaft, the
controller cam shaft is the vertical arrangement. The transmission
partial various pivots use the rolling bearing completely, by
derate
loss.
Locates the notch wheel is but becomes by 3 millimeters steel
plates
ramming, and but obtains the high resistance to wear after
processing.
Notch wheel overshooting escapes six index holes, the set screw
loads
in the position different hole, then decided the control handle
keeps
off the figure. In about each six grades of scopes, keeps off the
figure to be possible to choose wilfully. The localization ratchet
spring strength is may adjust, like this may act according to the
special details, under the classifying clear premise, adjusts the
ratchet spring strength, causes the handle control force in the
permission scope.
The cam suppresses for the black phenolic plastic but becomes, its
structure is the jack-in type, like this not only had guaranteed
the
rigging position is accurate, when like wants transforms the
contact
analysis and synthesis procedure, may conveniently take down the
free
cam, does not will certainly to put in order the Taiwan product to
open greatly unloads greatly.
The contact group structure divides into two kinds: 32 peaceful and
63
peaceful contacts groups are different besides the silver contact
diameter, other s
