8
5.3.2Brake operating principle
As shown in the following figure, the brake consists of magnetic yoke assembly 6, excitation coil 7, spring 2, brake
disc 5, armature 1, gear sleeve 4, installation screw 3, etc. The brake is mounted on the end cover of the motor and
the mounting screw is adjusted to the specified air gap value. The gear sleeve is fixed on the shaft, its outer tooth and
the inner tooth of the brake disc cooperate, when the torque is transferred, the brake disc can move axially on the
gear sleeve.
When the actuator coil 7 is energized, the coil produces a magnetic field that causes armature 1 to draw toward the
magnet yoke assembly 6 and armature 1 to detach (release) from the brake disc 5. At this time motor drive shaft
with brake disc 5 start and operate normally. When coil 7 is cut off, the magnetic flux disappears, armature 1 is
released, and spring 2 presses armature 1, and compresses the friction plate on the brake disc, generating friction
force to achieve the purpose of braking.
5.4 Operating System
The main working part of truck is fork, which are used to carry the pallet or cargo for transport and short distance
transportation. The expansion of the cylinder is realized by the control of the operating handle, and the pressure oil
is provided by the pumping station.
5.5 Electric System
The electrical system includes walking and operation control. The truck use AC electric control assembly. The
meter has a battery indicator. When the battery power is too low, the electric meter will cut off the starting control
Содержание EB20E
Страница 11: ...10 6 Electrical schematic diagram ...
Страница 16: ...15 Maintenance interval W A B C Maintenance ...