一种紧凑型分动箱总成

Abstract

本实用新型公开了一种紧凑型分动箱总成，涉及分动箱技术领域，包括箱体，所述箱体的一侧中心位置转动安装有动力输入轴，且动力输入轴对应箱体内腔一端固定连接有中心太阳齿轮，所述中心太阳齿轮外侧同时啮合有多个行星齿轮，且多个行星齿轮的中心固定连接有行星轮轴，通过行星齿轮传动结构实现多路同步输出。由于所有行星齿轮在同一时刻由同一个中心太阳齿轮驱动，保证了各动力输出轴之间极高的同步精度，所有齿轮集中在一个直径最小化的扁圆柱形空间内，消除了传统布局中的“空行程”轴段，使结构非常紧凑，功率密度高，同时，采用行星齿轮传动结构，相比多级串联齿轮轴或平行轴式结构，大大缩短了传动链，减少了传动效率的损失。

Claims

1. A compact transfer case assembly characterized by: The enclosure includes a housing (1), on which a power input shaft (2) is rotatably mounted at the center of one side. A central sun gear (4) is fixedly connected to one end of the power input shaft (2) corresponding to the inner cavity of the housing (1). Multiple planetary gears (5) mesh simultaneously on the outer side of the central sun gear (4), and a planetary gear shaft (7) is fixedly connected to the center of each planetary gear (5). One end of the planetary gear shaft (7) is rotatably mounted on the inner wall of the housing (1) on one side of the power input shaft (2) via a bearing. The inner wall of the housing (1) is fixed with a fixed gear ring (6) corresponding to the outer ring of multiple power output shafts (3), and the fixed gear ring (6) meshes with multiple planetary gears (5). The outer wall of the other side of the housing (1) is rotatably mounted with a power output shaft (3) corresponding to the outer end of multiple planetary gear shafts (7), and the inner wall of the housing (1) is mounted with a clutch bracket (9) corresponding to the inner end of multiple power output shafts (3), and a clutch (8) is mounted on the clutch bracket (9) corresponding to multiple pairs of power output shafts (3) and planetary gear shafts (7).

2. A compact transfer case assembly according to claim 1, characterized in that: The box body (1) includes two end caps that fit together, and the two end caps are provided with matching interlocking protrusions (13) on opposite sides. The outer ring of the two end caps of the box body (1) is equipped with a plurality of connecting bolt posts (14) in a ring array, and a connecting bolt is inserted through the outer side of the connecting bolt post (14) on one side.

3. A compact transfer case assembly according to claim 2, characterized in that: The two end faces of the box (1) are recessed towards the center on the inner side of the connecting bolt column (14), and a permanent magnet sleeve is sleeved on the outer wall of the connecting bolt column (14).

4. A compact transfer case assembly as in claim 1, wherein: The central sun gear (4) is fixedly connected to an oil slinger (10) on the side facing the center of the housing (1), and the outer side of the oil slinger (10) is provided with radial guide ribs.

5. A compact transfer case assembly as in claim 1, wherein: The power input shaft (2) and power output shaft (3) are both supported and sealed by an integrated bearing sealing unit with the housing (1). The integrated bearing sealing unit includes an angular contact ball bearing (11) and a double lip oil seal (12). The inner wall of the housing (1) is embedded with a bearing seat corresponding to the installation position of the power input shaft (2) and power output shaft (3). The bearing seat matches the size of the angular contact ball bearing (11) and the double lip oil seal (12). The angular contact ball bearing (11) is pre-tightly installed in the bearing seat, and the double lip oil seal (12) is installed on the outer end of the bearing seat.

6. A compact transfer case assembly as described in claim 1, wherein: The clutch (8) is an electromagnetic clutch with overload protection function.

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