CN217260268U - Steering system and vehicle - Google Patents
Steering system and vehicle Download PDFInfo
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- CN217260268U CN217260268U CN202221125366.8U CN202221125366U CN217260268U CN 217260268 U CN217260268 U CN 217260268U CN 202221125366 U CN202221125366 U CN 202221125366U CN 217260268 U CN217260268 U CN 217260268U
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Abstract
The utility model relates to a steering system and vehicle, include: a steering wheel; the rotating shaft is in transmission connection with the steering wheel; the first steering device comprises a first output shaft in transmission connection with the rotating shaft and a first driving mechanism controlled to apply a first acting force to the first output shaft so as to enable the first output shaft to rotate around a first axis of the first output shaft; the second steering device comprises a second output shaft in transmission connection with the first output shaft and a second driving mechanism which is controlled to apply a second acting force to the first output shaft so as to enable the first output shaft to rotate around a second axis of the second output shaft; and the steering gear is in transmission connection with the second output shaft and drives the wheels to rotate. The steering system can continue to assist the vehicle in steering through one of the first steering device and the second steering device when the other one of the first steering device and the second steering device is damaged, and the safety of the vehicle and a driver is effectively ensured.
Description
Technical Field
The utility model relates to an automobile steering technical field especially relates to a steering system and vehicle.
Background
At present, a steering system of a commercial vehicle mainly adopts a recirculating ball hydraulic steering gear for steering power assistance, but the steering system generally has a fixed power assistance characteristic, the power assistance characteristic cannot be changed in a self-adaptive manner along with the vehicle speed, and the requirements of light steering operation during low-speed driving and stable steering operation during high-speed driving cannot be met.
With the continuous improvement of the performance requirements of people on the steering system and the development of vehicle intellectualization, the steering system gradually develops towards the direction of electric power steering. However, in a commercial vehicle adopting electric power steering, after the electric power function fails, the steering capability is lost, and the vehicle and passengers in the vehicle can be injured inestimably.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a steering system and a vehicle that improve the above-described drawbacks, in view of the problem that the steering system using electric power assistance loses its steering ability after the electric power assistance function fails.
A steering system, comprising:
a steering wheel;
the rotating shaft is in transmission connection with the steering wheel;
the first steering device comprises a first output shaft in transmission connection with the rotating shaft and a first driving mechanism controlled to apply a first acting force to the first output shaft so as to enable the first output shaft to rotate around a first axis of the first output shaft;
the second steering device comprises a second output shaft in transmission connection with the first output shaft and a second driving mechanism which is controlled to apply a second acting force to the first output shaft so as to enable the first output shaft to rotate around a second axis of the second output shaft;
and the steering gear is in transmission connection with the second output shaft and drives wheels to rotate.
In one embodiment, the first drive mechanism comprises a first drive member and a first clutch having a first input and a first output that can be controllably disconnected or connected, the first input being connected to the first drive member and the first output being connected to the first output shaft.
In one embodiment, the first drive mechanism further comprises a first worm gear and a first worm engaged with each other, the first worm gear is mounted on the first output shaft, and the first worm is connected to the first output end.
In one embodiment, the second drive mechanism comprises a second driver and a second clutch having a second input and a second output which can be disconnected or connected in a controlled manner, the second input being connected to the second driver and the second output being connected to the second output shaft.
In one embodiment, the second driving mechanism further comprises a second worm wheel and a second worm engaged with each other, the second worm wheel is mounted on the second output shaft, and the second worm is connected with the second output end.
In one embodiment, the first steering device further includes a first rotation angle torque sensor in communication connection with the first driving mechanism, and one end of the first rotation angle torque sensor is connected to the rotation shaft, and the other end of the first rotation angle torque sensor is connected to the first output shaft, so as to control the magnitude of the first acting force applied by the first driving mechanism according to the rotation angle and the moment of the rotation shaft.
In one embodiment, the second steering device further includes a second rotation angle torque sensor in communication connection with the second driving mechanism, one end of the second rotation angle torque sensor is connected to the first output shaft, and the other end of the second rotation angle torque sensor is connected to the second output shaft, so as to control the magnitude of the second acting force applied by the second driving mechanism according to the rotation angle and the moment of the first output shaft.
In one embodiment, the steering system further comprises an angle transmission, an input shaft of the angle transmission being connected to the first output shaft, and an output shaft of the angle transmission being connected to the second output shaft.
In one embodiment, the steering gear is a recirculating ball hydraulic steering gear.
A vehicle comprising a steering system as claimed in any one of the preceding claims,
according to the steering system, the first steering device and the second steering device assist the steering of the vehicle together, so that when any one of the first steering device and the second steering device is damaged, the other one of the first steering device and the second steering device continues to assist the steering of the vehicle, the reliability of the whole steering system is improved, a driver can always effectively control the vehicle, and the safety of the vehicle and the driver is effectively guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a steering system according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the first steering device of FIG. 1;
fig. 3 is a schematic view of the operation flow of the steering system in fig. 1.
A steering wheel 10; a rotating shaft 11; an angle driver 12;
a first steering device 20; a first output shaft 21; a first drive mechanism 22; the first clutch 23; a first rotational angle torque sensor 24; a first worm gear 25; a first worm 26; a first driving member 27;
a second steering device 30; a second output shaft 31; a second drive mechanism 32; the second clutch 33; a second rotation angle torque sensor 34; a second worm wheel 35; a second drive member 36;
a diverter 40; and a wheel 41.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms different from those described herein and similar modifications may be made by those skilled in the art without departing from the spirit and scope of the invention and, therefore, the invention is not to be limited to the specific embodiments disclosed below.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a steering system according to an embodiment of the present invention.
An embodiment of the present invention provides a steering system, which includes a steering wheel 10, a rotating shaft 11, a first steering device 20, a second steering device 30 and a steering gear 40.
The rotary shaft 11 is drivingly connected to the steering wheel 10 for transmitting the steering movement provided by the steering wheel 10. The first steering device 20 includes a first output shaft 21 drivingly connected to the rotating shaft 11, and a first driving mechanism 22 controlled to apply a first force to the first output shaft 21 to rotate the first output shaft about its first axis. A certain force is applied to the first output shaft 21 by the first drive mechanism 22 so that the force transmitted from the steering wheel 10 to the first output shaft 21 by the first drive mechanism 22 is amplified to provide the force required to turn the wheels 41.
The second steering device 30 comprises a second output shaft 31 in transmission connection with the first output shaft 21, and a second driving mechanism 32 controlled to apply a second acting force to the second output shaft 31 to rotate the second output shaft 31 around a second axis of the second driving mechanism, wherein the second output shaft 31 is used for driving the wheels 41 to steer. A certain force is applied to the second output shaft 31 by the second driving mechanism 32, so that the force transmitted from the steering wheel 10 to the second output shaft 31 is amplified by the second driving mechanism 32, and further, the second output shaft 31 can have enough force to drive the wheels 41 to steer. A redundant steering system can be formed with the first steering device 20 by the second steering device 30, and whether any one of the first steering device 20 and the second steering device 30 fails, the other one can continue to provide a steering force to ensure the driver's control over the steering of the vehicle, thereby improving the safety of the electric power steering.
According to the steering system, the first steering device 20 and the second steering device 30 assist the steering of the vehicle together, so that when one of the first steering device 20 and the second steering device 30 is damaged, the other one can continue to assist the steering of the vehicle, the reliability of the whole steering system is improved, a driver can always effectively control the vehicle, and the safety of the vehicle and the driver is effectively guaranteed.
In the embodiment of the present invention, the steering system further includes a steering gear 40, the steering gear 40 is in transmission connection with the second output shaft 31, and receives the acting force from the second output shaft 31, so as to be used for steering the driving wheel 41. In the actual use process, the steering gear 40 has the function of amplifying the acting force from the second output shaft 31, so that the driving of the wheels 41 is driven by the first steering device 20, the second steering device 30 and the steering gear 40 together, the redundancy degree of the steering system is greatly increased, even if the first steering device 20 and the second steering device 30 are in failure, a driver can rotate through the steering gear 40, the steering of the vehicle by the driver is further ensured, and the safety of the whole steering system is improved.
In some embodiments, the steering device 40 is a recirculating ball hydraulic steering device, which has good stability, and when the first steering device 20 and the second steering device 30 are both disabled, the recirculating ball hydraulic steering device can still provide the driver with the steering assistance, so as to ensure the driver to control the steering of the vehicle.
In the embodiment of the present invention, referring to fig. 2, the first driving mechanism 22 includes a first driving member 27 and a first clutch 23, the first clutch 23 has a first input end and a first output end which can be controlled to be disconnected or connected, the first input end is connected to the first driving member 27, and the first output end is connected to the first output shaft 21. The first driver 27 can be controlled to be connected to or disconnected from the first output shaft 21 by the first clutch 23, thereby artificially controlling the opening and closing of the first steering device 20.
In actual use, when the vehicle is running normally, the first steering device 20 is in a standby state by disconnecting the first clutch 23, and the steering system assists the vehicle steering only by the second steering device 30. When the second steering device 30 fails, the first clutch 23 is closed so that the first drive mechanism 22 can apply force to the first output shaft 21 to ensure normal steering of the vehicle. When the first steering device 20 fails, the first clutch 23 is disconnected from the first output shaft 21 to separate the steering system from the first driving mechanism 22, so that the first driving mechanism 22 is prevented from interfering with the steering of the vehicle, and accidents are prevented.
Further, the second driving mechanism 32 comprises a second driver 36 and a second clutch 33, the second clutch 33 having a second input and a second output which can be controlled to be disconnected or connected, the second input being connected to the second driver 36 and the second output being connected to the second output shaft 31. The second clutch 33 can control the second driver 36 to be connected with or disconnected from the second output shaft 31, so as to control the opening or closing of the second steering device 30. When the second steering device 30 fails, the second clutch 33 may be disconnected to separate the steering system from the second driving mechanism 32, so as to avoid the second driving mechanism 32 from interfering with the steering of the vehicle, thereby preventing accidents.
Alternatively, the first clutch 23 and the second clutch 33 are electromagnetic clutches, and the first drive mechanism 22 and the second drive mechanism 32 are motors.
In some embodiments, the first steering device 20 further comprises a first worm wheel 25 and a first worm 26, which are meshed with each other, the first worm wheel 25 being mounted on the first output shaft 21, the first worm 26 being connected to the first output of the first clutch 23. The first worm wheel 25 and the first worm 26 can not only change the transmission direction of the first output end, but also reduce the rotation speed of the first driving mechanism 22 through the first worm wheel 25 and the first worm 26 to increase the acting force exerted on the first output shaft 21 by the first driving mechanism 22.
Further, the second steering device 30 further comprises a second worm wheel 35 and a second worm screw engaged with each other, the second worm wheel 35 being mounted on the second output shaft 31, the second worm screw being connected to the second output of the second clutch 33. The rotation speed of the second drive mechanism 32 is reduced by the second worm wheel 35 and the second worm to increase the force applied by the second drive mechanism 32 on the second output shaft 31.
The embodiment of the utility model provides an in, first turning device 20 still includes the first angle of rotation torque sensor 24 of being connected with the communication of first actuating mechanism 22, and first angle of rotation torque sensor 24's one end links to each other with axis of rotation 11, and the other end links to each other with first output shaft 21 to according to the turned angle and the effort of axis of rotation 11, the size of the first effort of control first actuating mechanism 22 application. In this way, the first corner torque sensor 24 detects the torque and the corner size and direction generated by the steering wheel 10 during the steering operation of the driver, and transmits the detected information to the vehicle control unit for calculation, the vehicle control unit performs calculation according to the driving conditions such as the vehicle speed and the engine speed to obtain a torque suitable for the driving conditions, and sends an instruction to the first driving mechanism 22 to operate, and the first driving mechanism 22 outputs a corresponding acting force to the first output shaft 21.
Further, the second steering device 30 also includes a second rotation angle torque sensor 34 connected to the second driving mechanism 32 in communication, and one end of the second rotation angle torque sensor 34 is connected to the rotating shaft 11, and the other end is connected to the second output shaft 31, so as to control the magnitude of the second acting force applied by the second driving mechanism 32 according to the rotation angle and the moment of the first output shaft 21. The second rotation angle torque sensor 34 can be referred to the first rotation angle torque sensor 24, and will not be described in detail.
Further, the steering system further includes an angle transmission 12, an input shaft of the angle transmission 12 is connected to the first output shaft 21, and an output shaft of the angle transmission 12 is connected to the second output shaft 31. By changing the transmission direction of the first output shaft 21 by the angular transmission 12, the transmission direction of the first output shaft 21 and the second output shaft 31 can be changed so that the positions of the first output shaft 21 and the second output shaft 31 can satisfy the layout of the vehicle.
The operation mode of the steering system in the embodiment of the present invention is described below with reference to fig. 3:
first, the steering system selects the normal assist mode, which is the mode in which the first steering device 20 is turned off and only the second steering device 30 is used to provide steering assist.
Then, the steering system determines whether the second steering device 30 is disabled, if the second steering device 30 is not disabled, the normal power assist mode continues to be used, otherwise the second clutch 33 is opened, the first clutch 23 is closed, and the steering system is assisted by the first steering device 20.
Then, the steering system determines whether the first steering device 20 fails, if the first steering device 20 does not fail, the steering system continues to assist the power by the first steering device 20, otherwise, the first clutch 23 and the second clutch 33 are both disconnected, and the steering system performs the power by the recirculating ball hydraulic steering.
The embodiment of the utility model provides a vehicle is still, including the a steering system as above in arbitrary embodiment, through above-mentioned a steering system, greatly guaranteed the reliability that turns to of vehicle to vehicle and driver's security has been improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A steering system, characterized in that the steering system comprises:
a steering wheel (10);
the rotating shaft (11) is in transmission connection with the steering wheel (10);
the first steering device (20) comprises a first output shaft (21) in transmission connection with the rotating shaft (11), and a first driving mechanism (22) controlled to apply a first acting force to the first output shaft (21) to enable the first output shaft to rotate around a first axis of the first output shaft;
the second steering device (30) comprises a second output shaft (31) in transmission connection with the first output shaft (21) and a second driving mechanism (32) controlled to apply a second acting force to the first output shaft (21) so as to enable the first output shaft to rotate around a second axis of the first output shaft;
the steering gear (40) is in transmission connection with the second output shaft (31) and drives wheels (41) to rotate.
2. A steering system according to claim 1, wherein the first drive mechanism (22) comprises a first driver (27) and a first clutch (23), the first clutch (23) having a first input and a first output which can be controllably disconnected or connected, the first input being connected to the first driver (27) and the first output being connected to the first output shaft (21).
3. A steering system according to claim 2, wherein the first drive mechanism (22) further comprises a first worm gear (25) and a first worm (26) in mesh with each other, the first worm gear (25) being mounted on the first output shaft (21), the first worm (26) being connected to the first output.
4. A steering system according to claim 1, wherein the second drive mechanism (32) comprises a second drive member (36) and a second clutch (33), the second clutch (33) having a second input and a second output which can be controllably disconnected or connected, the second input being connected to the second drive member (36) and the second output being connected to the second output shaft (31).
5. A steering system according to claim 4, wherein the second drive mechanism (32) further comprises a second worm gear (35) and a second worm screw in mesh with each other, the second worm gear (35) being mounted on the second output shaft (31), the second worm screw being connected to the second output.
6. The steering system according to claim 1, wherein the first steering device (20) further comprises a first rotation angle torque sensor (24) communicatively connected to the first driving mechanism (22), one end of the first rotation angle torque sensor (24) is connected to the rotating shaft (11), and the other end is connected to the first output shaft (21), so as to control the magnitude of the first acting force applied by the first driving mechanism (22) according to the rotation angle and the moment of the rotating shaft (11).
7. The steering system according to claim 1, wherein the second steering device (30) further comprises a second rotation angle torque sensor (34) connected in communication with the second driving mechanism (32), one end of the second rotation angle torque sensor (34) is connected to the first output shaft (21), and the other end is connected to the second output shaft (31) so as to control the magnitude of the second acting force applied by the second driving mechanism (32) according to the rotation angle and the moment of the first output shaft (21).
8. A steering system according to claim 1, characterized in that the steering system further comprises an angle transmission (12), the input shaft of the angle transmission (12) being connected to the first output shaft (21), the output shaft of the angle transmission (12) being connected to the second output shaft (31).
9. A steering system according to claim 1, wherein the steering gear (40) is a recirculating ball hydraulic steering gear.
10. A vehicle characterized by comprising a steering system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221125366.8U CN217260268U (en) | 2022-05-11 | 2022-05-11 | Steering system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221125366.8U CN217260268U (en) | 2022-05-11 | 2022-05-11 | Steering system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217260268U true CN217260268U (en) | 2022-08-23 |
Family
ID=82885125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221125366.8U Active CN217260268U (en) | 2022-05-11 | 2022-05-11 | Steering system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217260268U (en) |
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2022
- 2022-05-11 CN CN202221125366.8U patent/CN217260268U/en active Active
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