一种带中央差速器差速锁的叉车变速箱
The central differential lock mechanism enables effective torque distribution and locking of the four-wheel drive forklift under harsh road conditions, solving the problems of tire wear and slippage, and improving handling performance and ability to get out of trouble.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LAIZHOU LAIYU HEAVY IND CO LTD
- Filing Date
- 2025-10-14
- Publication Date
- 2026-07-17
AI Technical Summary
Existing four-wheel drive forklifts lack effective torque distribution and locking mechanisms under complex working conditions, resulting in insufficient ability to get out of trouble, poor passability and stability, especially when turning at large angles, the tires wear out severely, affecting handling performance and service life.
It adopts a central differential lock mechanism, including a central differential and a differential lock, which can automatically adjust the power output torque of the front and rear axles and lock the front and rear axles when slipping, ensuring that power is effectively transmitted to the wheels with traction and providing a rigid connection.
It improves the forklift's passability and ability to get out of trouble in harsh road conditions, reduces tire wear, enhances handling flexibility and tire life, and strengthens the vehicle's stability and efficiency in complex environments.
Smart Images
Figure CN224515845U_ABST
Abstract
Claims
1. A forklift transmission with a central differential differential lock, comprising a transmission housing (1), characterized in that, Also includes: A differential mechanism (2) is disposed within the gearbox housing (1). The differential mechanism (2) includes a central differential mechanism (25) and a differential lock mechanism (24). The central differential mechanism (25) is used to automatically adjust the power output torque of the front and rear axles to achieve differential function. The differential lock mechanism (24) is used to selectively lock the central differential mechanism (25) to achieve rigid connection between the front and rear axles when slipping.
2. The forklift transmission with a central differential differential lock according to claim 1, characterized in that: The central differential mechanism (25) includes a first bevel gear (251), a second bevel gear (252), and a rotating shaft (253). The first bevel gear (251) and the second bevel gear (252) are meshed and connected through the rotating shaft (253) to form a differential gear set.
3. The forklift transmission with a center differential differential lock according to claim 1, characterized in that: The differential lock mechanism (24) includes a push ring (241) and an arc groove (242). The push ring (241) can move along the arc groove (242) to lock or release the central differential mechanism (25).
4. The fork truck transmission with a center differential differential lock according to claim 1, wherein: The differential lock mechanism (24) is controlled by a differential lock control cylinder (22) and a differential lock fork (23). The differential lock control cylinder (22) drives the differential lock fork (23) to operate the locking state of the differential lock mechanism (24).
5. The fork truck transmission with a center differential differential lock according to claim 1, characterized in that: It also includes output shaft one (26) and output shaft two (27), which are respectively connected to the central differential mechanism (25) for transmitting power to the front axle and the rear axle.
6. A forklift transmission with a central differential differential lock according to claim 5, characterized in that: The output shaft (26) is provided with gear one (261) and gear two (262), which mesh with the central differential mechanism (25) to transmit torque.
7. The fork truck transmission with a center differential differential lock according to claim 1, characterized in that: The differential mechanism (2) also includes a differential housing (21), in which the central differential mechanism (25) and the differential lock mechanism (24) are housed.
8. The fork truck transmission with a center differential differential lock according to claim 5, characterized in that: When the differential lock mechanism (24) is locked, it forces the first output shaft (26) and the second output shaft (27) to rotate synchronously, thereby achieving rigid drive of the front and rear axles.
9. The fork truck transmission with a center differential differential lock according to claim 1, characterized in that: The central differential mechanism (25) automatically adjusts the power output torque of the front and rear axles according to the tire force, avoiding tire drag during large-angle turns.
10. The fork truck transmission with a center differential differential lock according to claim 4, wherein: The differential lock control cylinder (22) is controlled by a pneumatic signal and automatically activates the differential lock mechanism (24) in response to a vehicle slippage signal.