Steering device for full-tooth meshing and disengagement of internal and external straight spur gears
By using a steering device with full meshing and disengagement of internal and external spur gears, the problems of complex structure and difficult function switching of existing devices are solved, and efficient control of straight-line movement and left and right steering of mobile machinery and vehicles is achieved.
Patent Information
- Application Number
- CN202423237461.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Existing left and right steering devices are complex in structure, difficult to manufacture, and difficult to achieve efficient switching between straight-line movement and left and right steering functions in walking machinery and vehicles.
The steering device employs a combination of internal and external spur gears with full meshing and disengagement. Power transmission and steering control are achieved through a bevel gear shaft, driven bevel gear, intermediate transmission shaft, internal and external spur gears, and shift fork structure. Elastic retaining rings and needle roller bearings ensure stable gear meshing and disengagement.
It achieves a compact and easy-to-manufacture steering device that can efficiently switch between straight-line travel and left and right steering functions of mobile machinery and vehicles.
Smart Images
Figure CN223578775U_ABST
Abstract
Description
[0001] (I) TECHNICAL FIELD: The present invention relates to manufacturing a steering device of full tooth engagement and disengagement of internal and external spur cylindrical gears, which is used for walking machines and vehicles of straight walking and left and right steering.
[0002] (II) BACKGROUND: At present, the devices capable of left and right steering include automobile front axle steering arm devices and motorcycle front wheel steering devices.
[0003] (III) CONTENT: The present invention relates to manufacturing a steering device of full tooth engagement and disengagement of internal and external spur cylindrical gears, which has a single piece bevel gear shaft in the longitudinal direction in the box, power is input from the shaft, a single piece driven bevel gear is engaged with the bevel gear of the single piece bevel gear shaft, the driven bevel gear is sleeved on the intermediate transmission shaft, the left end of the intermediate transmission shaft is sleeved with a left internal spur cylindrical gear on the external spline section, the right end of the intermediate transmission shaft is sleeved with a right internal spur cylindrical gear on the external spline section, the left end of the intermediate transmission shaft is provided with an elastic retaining ring for the shaft to prevent the left internal spur cylindrical gear from sliding out of the left end of the shaft, the right end of the intermediate transmission shaft is provided with an elastic retaining ring for the shaft to prevent the right internal spur cylindrical gear from sliding out of the right end of the shaft, a needle bearing is arranged at the position of the shaft center line of the left end of the intermediate transmission shaft, the right end of the left half shaft is sleeved in the needle bearing, a needle bearing is arranged at the position of the shaft center line of the right end of the intermediate transmission shaft, the left end of the right half shaft is sleeved in the needle bearing. The left yoke drives the left spur cylindrical gear to slide rightwards on the external spline section of the left half shaft to make the left spur cylindrical gear and the left internal spur cylindrical gear fully engaged, the left yoke drives the left spur cylindrical gear to slide leftwards on the external spline section of the left half shaft to make the left spur cylindrical gear and the left internal spur cylindrical gear disengaged, the right yoke drives the right spur cylindrical gear to slide leftwards on the external spline section of the right half shaft to make the right spur cylindrical gear and the right internal spur cylindrical gear fully engaged, and the right yoke drives the right spur cylindrical gear to slide rightwards on the external spline section of the right half shaft to make the right spur cylindrical gear and the right internal spur cylindrical gear disengaged. When the left spur cylindrical gear and the left internal spur cylindrical gear and the right spur cylindrical gear and the right internal spur cylindrical gear are simultaneously in full tooth engagement, the left half shaft and the right half shaft can simultaneously output power. When the left spur cylindrical gear and the left internal spur cylindrical gear are disengaged, while the right spur cylindrical gear and the right internal spur cylindrical gear are still in full tooth engagement, the right half shaft outputs power. When the right spur cylindrical gear and the right internal spur cylindrical gear are disengaged, while the left spur cylindrical gear and the left internal spur cylindrical gear are still in full tooth engagement, the left half shaft outputs power. The number of teeth and the module of the left spur cylindrical gear, the left internal spur cylindrical gear, the right spur cylindrical gear and the right internal spur cylindrical gear are the same.
[0004] (IV) BRIEF DESCRIPTION OF DRAWINGS: Figure 1 The structure diagram of the steering device of full tooth engagement and disengagement of internal and external spur cylindrical gears.
[0005] 1. Housing; 2. Bevel gear shaft; 3. Driven bevel gear; 4. Intermediate transmission shaft; 5. Right half shaft; 6. Shaft retaining ring; 7. Right internal spur gear; 8. Right spur gear; 9. Right shift fork; 10. Right shift fork lever; 11. Left half shaft; 12. Left internal spur gear; 13. Left shift fork; 14. Left shift fork lever; 15. Left spur gear; 16. Needle roller bearing; 17. Steel ball; 18. Compression spring; 19. Nut; 20. Bolt.
[0006] (V) Specific Implementation Methods: such as Figure 1 As shown, manipulating the left shift fork lever (14) causes the left shift fork (13) to move the left spur gear (15) to the right on the outer spline section of the left half-shaft (11) until it fully meshes with the left inner spur gear (12). Manipulating the right shift fork lever (10) causes the right shift fork (9) to move the right spur gear (8) to the left on the outer spline section of the right half-shaft (5) until it fully meshes with the right inner spur gear (7). Power is transmitted through the bevel gear shaft (2) and the driven bevel gear. The gear (3) and intermediate drive shaft (4) transmit power to the left, through the left internal spur gear (12), left spur gear (15), and left half-shaft (11), to achieve power output to the left; the power is transmitted to the right, through the right internal spur gear (7), right spur gear (8), and right half-shaft (5), to achieve power output to the right. At this time, the power output of the left half-shaft (11) and the power output of the right half-shaft (5) are achieved simultaneously. When the right internal spur gear (7) and the right spur gear (8) are in full gear meshing, the left shift fork lever (14) is manipulated to make the left shift fork (13) move the left spur gear (15) to slide to the left on the outer spline section of the left half-shaft (11) until it disengages from the left internal spur gear (12). At this time, the left half-shaft (11) will stop power output. When the left internal spur gear (12) and the left spur gear (15) are in full mesh, the right shift fork lever (10) is manipulated to cause the right shift fork (9) to move the right spur gear (8) to slide to the right on the outer spline section of the right half-shaft (5) until it disengages from the right internal spur gear (7). At this time, the right half-shaft (5) will stop power output. This steering device has a compact structure, strong innovation, and high practicality. It is easy to manufacture and can be installed on mobile machinery or vehicles, enabling the mobile machinery or vehicles to travel in a straight line and turn left and right.
Claims
1. A steering gear of the type having full engagement and disengagement of the internal and external spur cylindrical gears, characterised in that: In the box (1) of the steering device, the bevel gear of the single-piece bevel gear shaft (2) is always engaged with the driven bevel gear (3) which is sleeved on the intermediate transmission shaft (4), the outer spline section of the left end of the intermediate transmission shaft (4) is sleeved with the left inner spur gear (12), the outer spline section of the right end of the intermediate transmission shaft (4) is sleeved with the right inner spur gear (7), the left end of the intermediate transmission shaft (4) is provided with a shaft elastic retainer (6) to prevent the inner spur gear (12) from sliding out of the left end of the shaft, the right end of the intermediate transmission shaft (4) is provided with a shaft elastic retainer (6) to prevent the right inner spur gear (7) from sliding out of the right end of the shaft, the shaft center line position of the left end of the intermediate transmission shaft (4) is provided with a needle bearing (16), the right end of the left half shaft (11) is fitted into the needle bearing (16), the shaft center line position of the right end of the intermediate transmission shaft (4) is provided with a needle bearing (16), the left end of the right half shaft (5) is fitted into the needle bearing (16); the left yoke (13) drives the left spur gear (15) to slide rightwards on the outer spline section of the left half shaft (11) to make the left spur gear (15) and the left inner spur gear (12) fully engaged, the left yoke (13) drives the left spur gear (15) to slide leftwards on the outer spline section of the left half shaft (11) to make the left spur gear (15) and the left inner spur gear (12) disengage, the right yoke (9) drives the right spur gear (8) to slide leftwards on the outer spline section of the right half shaft (5) to make the right spur gear (8) and the right inner spur gear (7) fully engaged; the right yoke (9) drives the right spur gear (8) to slide rightwards on the outer spline section of the right half shaft (5) to make the right spur gear (8) and the right inner spur gear (7) disengage; when the left spur gear (15) and the left inner spur gear (12) and the right spur gear (8) and the right inner spur gear (7) are simultaneously engaged, the left half shaft (11) and the right half shaft (5) can simultaneously output power; when the left spur gear (15) and the left inner spur gear (12) are disengaged, while the right spur gear (8) and the right inner spur gear (7) are still engaged, the right half shaft (5) outputs power alone at this time; when the right spur gear (8) and the right inner spur gear (7) are disengaged, while the left spur gear (15) and the left inner spur gear (12) are still engaged, the left half shaft (11) outputs power alone at this time; the number of teeth and the module of the left spur gear (15), the left inner spur gear (12), the right spur gear (8) and the right inner spur gear (7) are the same.