195-15-03012 TRANSMISSION ASSY（B）
The gearbox is the core component of the bulldozer transmission system, which mainly functions to adjust the speed and torque of the engine output power according to the operation requirements, and then transmit it to the driving wheels or tracks to achieve the control of the whole machine's driving, steering, and operation actions. Its core components usually include hydraulic torque converters, planetary gear power shift mechanisms, hydraulic control systems, and cooling and lubrication systems. Some models also integrate load adaptive adjustment functions to improve operational efficiency under complex working conditions.
Application of Transmission Components (Part B)
Powershift Transmission
Features: Shifting gears without cutting off power, high operational efficiency.
Representative models: CAT D8T, Shantui SD22.
Function of component B:
The clutch set achieves smooth shifting
The planetary gear set provides multiple gear options
Mechanical gearbox
Features: Simple structure, low cost, requiring parking and gear shifting.
Representative models: old-fashioned bulldozers such as Dongfanghong-802.
Function of component B:
Sliding gear completes gear shift
Synchronizer reduces shifting shock
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