若用带轮、链轮等驱动时应设托架支承，以防主动齿轮轴承受径向力。
If the pulley, sprocket-driven, such as supporting brackets should be established to prevent the initiative gear bearing the radial force.
若用带轮、链轮等驱动时应设托架支承，以防主动齿轮轴承受径向力。
If use the belt wheel, wheel, etc, shall set bracket support, in case of driving gear bearing by the radial force.
第五轮提供稳固连接点，快速接运托架。
The fifth wheel provides a solid connection point to carry the bracket quickly.
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