一种与变速器柔性连接的取力器结构
By introducing a flexible connection structure between the power take-off (PTO) and the transmission in new energy commercial vehicles, and using an elastomer to buffer torque impact, the problem of torque fluctuation caused by the rigid connection between the PTO and the transmission in new energy commercial vehicles is solved, thereby improving the service life of components and the stability of power transmission.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAANXI FAST AUTO DRIVE GRP CO LTD
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-17
AI Technical Summary
The rigid connection between the power take-off and transmission in new energy commercial vehicles lacks vibration damping, resulting in large torque fluctuations, affecting gear meshing, bolt loosening, and seal failure, thus increasing operation and maintenance costs.
A flexible connection structure is introduced between the power take-off and the transmission. An elastomer is used to absorb torque shocks. The flexible connection between the elastomer and the gear ring buffers the shocks and vibrations during power transmission.
It effectively reduces torque fluctuations, minimizes component wear, improves the reliability of the power take-off unit, lowers maintenance costs, and maintains the stability of power transmission.
Smart Images
Figure CN224515883U_ABST
Abstract
Claims
1. A power take-off structure flexibly connected to a transmission, characterized by, The device includes a power take-off housing (3), which contains a hollow shaft (11) for inputting power and an output device for outputting power. A cylinder body (8) is fixedly connected to the outside of the power take-off housing (3). A flexible connection structure is provided on the hollow shaft (11). The flexible connection structure includes an elastic body (12). An intermediate shaft (2) is inserted inside the hollow shaft (11). A gear ring (13) is fitted on the hollow shaft (11). Both the hollow shaft (11) and the gear ring (13) are provided with end face teeth. One side of the gear ring (13) with end face teeth is positioned opposite to the end face teeth on the hollow shaft (11) but does not directly mesh with them. An elastic body (12) is provided between the hollow shaft (11) and the gear ring (13). One side of the elastic body (12) is engaged with the end face teeth of the hollow shaft (11), and the other side of the elastic body (12) is engaged with the end face teeth of the gear ring (13).
2. A power takeoff structure flexibly connected to a transmission according to claim 1, characterized by A stop ring (19) is provided on the side of the toothed ring (13) away from the elastic body (12) to restrict the toothed ring (13) from moving axially to the side away from the elastic body (12).
3. A power take-off arrangement flexibly connected to a transmission according to claim 2, characterized in that, The gear ring (13) is sleeved on the hollow shaft (11), and a spacer (20) is provided on the inner side of the gear ring (13) and the mating surface of the hollow shaft (11).
4. A power take-off arrangement flexibly connected to a transmission according to claim 3, characterized in that, The output device includes a sliding sleeve (14) provided on the right side of the gear ring (13), the sliding sleeve (14) being fitted onto the hollow shaft (11), and an input gear (15) being provided on the right side of the sliding sleeve (14) and fitted onto the hollow shaft (11).
5. A power take-off arrangement flexibly connected to a transmission according to claim 4, characterized in that, A needle roller bearing (18) is provided between the input gear (15) and the hollow shaft (11). The input gear (15) is supported on the hollow shaft (11) by the needle roller bearing (18), and the input gear (15) and the hollow shaft (11) can rotate relative to each other by the needle roller bearing (18).
6. A power take-off arrangement flexibly connected to a transmission according to claim 5, characterized in that, A piston (7) is provided inside the cylinder body (8). The piston (7) is fixedly connected to a shift fork shaft (4). The shift fork shaft (4) is fixedly connected to a shift fork (5). The shift fork (5) contacts the sliding sleeve (14). When the shift fork (5) moves, it can push the sliding sleeve (14).
7. A power take-off arrangement flexibly connected to a transmission according to claim 6, characterized in that, The input gear (15) meshes with the output gear shaft (10), and the output gear shaft (10) is splined with a flange (9).
8. A power take-off structure flexibly connected to a transmission according to claim 6, characterized by The inner spline of the sliding sleeve (14) is engaged with the outer spline of the gear ring (13) and the input gear (15). The sliding sleeve (14) is driven by the shift fork (5) to achieve engagement and disengagement with the gear ring (13) and the input gear (15).
9. A power take-off structure flexibly connected to a transmission according to claim 1, characterized by, The cylinder block (8) is fixedly connected to the power take-off cover (6) and the power take-off housing (3) in sequence, and the power take-off housing (3) is installed on the transmission housing (1).
10. A power take-off structure flexibly connected to a transmission according to claim 1, characterized by, The intermediate shaft (2) is inserted into the hollow shaft (11) and torque is transmitted through the spline. A baffle (16) is installed at one end of the intermediate shaft (2) inserted into the hollow shaft (11) by bolts (17).