CN109552410B - Automatic steering wheel aligning device, vehicle steering system and vehicle - Google Patents
Automatic steering wheel aligning device, vehicle steering system and vehicle Download PDFInfo
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- CN109552410B CN109552410B CN201811600058.4A CN201811600058A CN109552410B CN 109552410 B CN109552410 B CN 109552410B CN 201811600058 A CN201811600058 A CN 201811600058A CN 109552410 B CN109552410 B CN 109552410B
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- 238000004146 energy storage Methods 0.000 claims abstract description 53
- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 238000005381 potential energy Methods 0.000 claims description 10
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 230000002337 anti-port Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0245—Means or methods for determination of the central position of the steering system, e.g. straight ahead position
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Abstract
The invention relates to an automatic steering wheel aligning device, a vehicle steering system and a vehicle, wherein the automatic steering wheel aligning device comprises: a mounting plate (6); the rotating shaft (3) is arranged on the mounting plate (6) and used for receiving the rotating torque of the steering wheel and rotating relative to the mounting plate (6) under the action of the rotating torque; the pressure-bearing energy storage device is arranged on the mounting plate (6); and the first transmission assembly is connected with the rotating shaft (3) and used for transmitting the rotating torque of the rotating shaft (3) to the pressure-bearing energy storage device, and the rotating shaft (3) is positively rotated or reversely rotated, so that the pressure-bearing energy storage device generates a aligning torque by compressing the pressure-bearing energy storage device, and the rotating shaft (3) is driven by the aligning torque to rotate to drive the steering wheel to align. The invention can generate stable aligning torque and improve the stability and safety of aligning control.
Description
Technical Field
The invention relates to the technical field of vehicle steering, in particular to an automatic steering wheel aligning device, a vehicle steering system and a vehicle.
Background
Currently, steering systems are divided into three categories: mechanical steering system, power assisted steering system and steer-by-wire system. The front two steering systems are both provided with steering trapezoid structures, and the main pin back inclination angle structures and the main pin inner inclination angle structures of the steering wheels are utilized to generate aligning torque during high-speed running and low-speed running respectively, so that the steering wheel has steering road feel and realizes automatic aligning. The steer-by-wire cancels a steering trapezoid structure and is completely controlled by electric energy, the steering wheel is connected with a corner encoder, when the steering wheel is rotated, the corner encoder transmits corner information to a controller, the controller transmits a steering command to a steering motor through calculation so as to control wheels to rotate, a steering signal is transmitted to a torque sensor connected with the steering wheel, and a correcting torque and road feel information are generated through a correcting torque motor.
The above-described steer-by-wire structure has at least two problems: firstly, because no mechanical aligning structure exists, if a certain link of an electric control signal has a problem, the phenomenon that the steering wheel cannot be aligned exists, so that a driver cannot judge the positions of wheels, and the driving risk is increased; secondly, because the steering wheel is not connected with a related mechanical structure, the number of rotation turns of the steering wheel cannot be limited, theoretically, the steering wheel can rotate any number of turns, the relationship between the steering wheel and the rotation angle of the wheels cannot be limited, and the rotation angle of the steering wheel cannot be transmitted to the wheels through a calculation program set in advance by the controller.
In the prior art, some steering structures use a spiral spring as an energy storage element to generate a aligning moment, and when a steering wheel turns left and right, the spring is in a stretching or compressing state respectively, however, the elastic potential energy generated by the spring in the processes of compression and stretching is difficult to ensure the same, so that the aligning moment is unstable; moreover, the structure is complex, the replacement of a new spring is difficult after the fatigue failure of the spring, and the required installation space is large.
It is noted that the information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide an automatic steering wheel aligning device, a vehicle steering system and a vehicle, which are used for improving the stability of aligning torque.
In order to achieve the above object, the present invention provides an automatic steering wheel aligning apparatus, comprising:
mounting a plate;
the rotating shaft is arranged on the mounting plate and used for receiving the rotating torque of the steering wheel and rotating relative to the mounting plate under the action of the rotating torque;
the pressure energy storage device is arranged on the mounting plate; and
the first transmission assembly is connected with the rotating shaft and used for transmitting the rotating torque of the rotating shaft to the compressed energy storage device, and the compressed energy storage device is compressed to generate a aligning torque when the rotating shaft rotates forwards or backwards, so that the rotating shaft is driven to rotate through the aligning torque to drive the steering wheel to align.
Optionally, the pressure-receiving energy storage device comprises an elastic element, the elastic element is connected with the first transmission assembly and is compressed under the action of the first transmission assembly to generate elastic potential energy, and the elastic potential energy forms a restoring moment.
Optionally, the pressurized energy storage device comprises a hydraulic cylinder and an energy accumulator, a cylinder rod of the hydraulic cylinder is connected with the first transmission assembly, a rodless cavity of the hydraulic cylinder is communicated with the energy accumulator, the cylinder rod is compressed and retracted under the action of the first transmission assembly, so that hydraulic oil in the rodless cavity is stored in the energy accumulator, and energy stored in the energy accumulator forms a return moment.
Optionally, the first transmission assembly includes a windable member having a first end connected to the shaft and a second end movably mounted on the mounting plate for winding about the shaft upon rotation of the shaft and compressing the pressurized energy storage device upon winding.
Optionally, a first end of the pressurized energy storage device is fixed relative to the mounting plate and a second end of the pressurized energy storage device is coupled to a second end of the windable member.
Optionally, the first drive assembly further comprises a sliding assembly for sliding the second end of the windable member relative to the mounting plate.
Optionally, the sliding assembly includes a sliding block and a sliding rail, the sliding rail is mounted on the mounting plate, the sliding block and the sliding rail are engaged with each other and slide along the sliding rail, and both the second end of the windable member and the second end of the pressurized energy storage device are connected to the sliding block.
Optionally, the windable member comprises a belt, a wire rope or a chain.
Optionally, the pressure accumulator means is configured to limit the number of turns of the steering wheel.
Optionally, the travel of the pressure accumulator means is limited to enable the steering wheel to be turned a preset number of turns.
Optionally, the pressure accumulator means is removably mounted on the mounting plate.
Optionally, the steering wheel self-aligning device further comprises an angle measuring device for measuring the rotation angle of the rotating shaft.
Optionally, the steering wheel self-aligning device further includes a second transmission assembly disposed between the rotating shaft and the angle measuring device, and the second transmission assembly is configured to transmit rotation of the rotating shaft to the angle measuring device.
Optionally, the second transmission assembly includes a first gear and a second gear, the first gear is mounted on the rotating shaft, the second gear is meshed with the first gear, and the angle measuring device is connected with the second gear to measure the rotating angle of the second gear.
In order to achieve the purpose, the invention also provides a vehicle steering system which comprises the automatic steering wheel aligning device.
Optionally, the vehicle steering system further comprises a steering wheel and a steering column, the steering wheel being connected to the steering column, the steering column being connected to the rotating shaft.
In order to achieve the above object, the present invention further provides a vehicle steering system, which comprises a steering wheel, a controller, a wheel steering driving device and the above steering wheel automatic aligning device, wherein the controller is in signal connection with the angle measuring device to control the wheel steering driving device according to the rotation angle of the rotating shaft measured by the angle measuring device, so as to control the steering of the wheels.
In order to achieve the above object, the present invention also provides a vehicle including the above vehicle steering system.
Based on the technical scheme, the embodiment of the invention transmits the rotation torque of the rotating shaft to the compressed energy storage device through the first transmission assembly, so that the compressed energy storage device is compressed to generate a return torque, and the rotating shaft is driven to rotate reversely to drive the steering wheel to return, and the return structure is a mechanical transmission structure, so that compared with a steering system which is controlled by electric energy, the steering system cannot return the steering wheel due to the fault of an electric control signal, the driving risk is reduced, and the stability and the safety of return control are improved; in addition, no matter the rotating shaft rotates forwards or backwards, the rotating moment is transmitted to the pressure storage device and then is generated into the aligning moment in a mode of compressing the pressure storage device, and compared with a scheme that the spring is respectively in a stretching state or a compressing state when the steering wheel rotates leftwards and rightwards, the aligning moment is not unstable due to different elastic potential energy generated in stretching and compressing.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a perspective view of an embodiment of an automatic steering wheel aligning apparatus according to the present invention.
Fig. 2 is a front view of an embodiment of the automatic steering wheel aligning apparatus of the present invention.
Fig. 3 isbase:Sub>A view of the embodiment of fig. 2 taken along sectionbase:Sub>A-base:Sub>A.
In the figure:
1. a connecting shaft; 2. a flat bond; 3. a rotating shaft; 4. a bearing; 5. a bearing seat; 6. mounting a plate; 7. a first gear; 8. a turntable; 9. a snap ring; 10. an angle measuring device; 11. a second gear; 12. a support; 13. a mounting seat; 14. a flat bond; 15. an elastic member; 16. a windable member; 17. a slide rail; 18. a slider; 19. and a connecting frame.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention.
Referring to fig. 1 to 3, in an embodiment of the steering wheel self-aligning apparatus provided by the present invention, the steering wheel self-aligning apparatus includes a mounting plate 6, a rotating shaft 3, a pressurized energy storage device and a first transmission assembly, wherein the rotating shaft 3 is disposed on the mounting plate 6, and the rotating shaft 3 is configured to receive a rotating torque of a steering wheel and rotate relative to the mounting plate 6 under the rotating torque; the pressure-bearing energy storage device is arranged on the mounting plate 6; first drive assembly is connected with pivot 3, and first drive assembly is used for transmitting the turning moment of pivot 3 to pressurized energy storage device to all make pressurized energy storage device produce the moment of returning the normal when pivot 3 forward rotation or antiport through compressing pressurized energy storage device, when the external force that the steering wheel received reduces, the moment of returning the normal that pressurized energy storage device produced can drive pivot 3 antiport, and then drives the steering wheel and returns the normal.
In the above embodiment, the rotation torque of the rotating shaft 3 is transmitted to the pressurized energy storage device through the first transmission assembly, so that the pressurized energy storage device is compressed to generate a aligning torque, and the rotating shaft 3 is driven to rotate reversely to drive the steering wheel to align; in addition, no matter whether the rotating shaft 3 rotates in the forward direction or the reverse direction, the rotating moment is transmitted to the pressure storage device and then the pressure storage device is compressed to generate the aligning moment, and compared with a scheme that the spring is respectively in a stretching state or a compressing state when the steering wheel rotates left and right, the aligning moment is not unstable due to different elastic potential energy generated in stretching and compressing.
The specific design of the pressure accumulator can be selected in many ways.
In an alternative embodiment, the compressed energy storage device includes an elastic member 15, the elastic member 15 is connected to the first transmission assembly, when the rotating shaft 3 rotates in a forward direction or a reverse direction, the first transmission assembly moves relative to the mounting plate 6, under the action of the first transmission assembly, the elastic member 15 is compressed to generate elastic potential energy, the elastic potential energy is used as the above-mentioned turning moment, and when the rotating moment applied to the rotating shaft 3 is reduced, the elastic potential energy generated by the elastic member 15 can drive the rotating shaft 3 to rotate in the reverse direction, so as to make the steering wheel return to the normal direction.
In another alternative embodiment, the pressurized energy storage device comprises a hydraulic cylinder and an energy accumulator, a cylinder rod of the hydraulic cylinder is connected with the first transmission assembly, a rodless cavity of the hydraulic cylinder is communicated with the energy accumulator, when the rotating shaft 3 rotates forwards or reversely, the first transmission assembly moves relative to the mounting plate 6, the cylinder rod is compressed and retracts under the action of the first transmission assembly, hydraulic oil in the rodless cavity can be stored in the energy accumulator when the cylinder rod retracts, the energy stored in the energy accumulator serves as the above-mentioned aligning torque, and when the rotating torque applied to the rotating shaft 3 is reduced, the energy stored in the energy accumulator can drive the rotating shaft 3 to rotate reversely, so that the steering wheel is aligned.
The specific structure of the first transmission component can be selected in various ways.
In an alternative embodiment, the first transmission assembly includes a windable member 16, a first end of the windable member 16 is connected to the rotating shaft 3, a second end of the windable member 16 is movably mounted on the mounting plate 6, when the rotating shaft 3 rotates, the rotating shaft 3 drives the windable member 16 to wind around the rotating shaft 3, the rotating shaft 3 winds the windable member 16 on the rotating shaft 3 as a winding shaft of the windable member 16, and the windable member 16 compresses the pressure energy storage device during winding.
When the pressure storing means comprises a resilient member 15, a first end of the resilient member 15 is fixed relative to the mounting plate 6 and a second end of the resilient member 15 is connected to a second end of the windable member 16. Thus, when the windable member 16 is wound, the windable member 16 moves relative to the mounting plate 6, thereby moving the second end of the elastic member 15 relative to the mounting plate 6, and the first end of the elastic member 15 is fixed relative to the mounting plate 6, thereby compressing the elastic member 15.
When the pressurised energy storage means comprises a hydraulic cylinder and an energy accumulator, the cylinder is fixed relative to the mounting plate 6 and the projecting end of the cylinder rod is connected to the second end of the coilable member 16. Thus, when the windable member 16 is wound, the windable member 16 moves relative to the mounting plate 6 to drive the cylinder rod to move relative to the mounting plate 6, and the cylinder barrel is fixed relative to the mounting plate 6, so that the cylinder rod can retract, and when the cylinder rod retracts, hydraulic oil in the rod-free cavity is stored in the accumulator.
Further, the first transmission assembly also includes a sliding assembly for sliding the second end of the windable member 16 relative to the mounting plate 6. By providing a sliding assembly, the resistance to movement of the windable member 16 relative to the mounting plate 6 can be reduced and the movement of the windable member 16 can also be guided.
As shown in fig. 1, the sliding assembly includes a sliding block 18 and a sliding rail 17, the sliding rail 17 is mounted on the mounting plate 6, the sliding block 18 is matched with the sliding rail 17 and slides along the sliding rail 17, and the second end of the windable member 16 and the second end of the elastic member 15 are both connected with the sliding block 18.
When the rotating shaft 3 rotates, the windable part 16 is driven to wind, the second end of the windable part 16 moves leftwards, the sliding block 18 is driven to slide leftwards along the sliding rail 17, and the sliding block 18 drives the second end of the elastic part 15 to move leftwards when sliding, so that the elastic part 15 is compressed.
The windable member 16 may be a flexible member such as a belt, cable or chain.
Alternatively, the pressure accumulator means may be removably mounted on the mounting plate 6. This arrangement facilitates replacement of the pressurised energy storage means, for example by replacing a new resilient member 15 in the event of fatigue failure of the resilient member 15.
Specifically, a first end of the elastic element 15 is mounted on the mounting plate 6 through the bracket 12, the bracket 12 is fixedly connected with the mounting plate 6, and the elastic element 15 is detachably connected with the bracket 12. The second end of the elastic member 15 is detachably connected to the slider 18.
Optionally, the pressurized energy storage device is configured to limit the number of turns of the steering wheel, so that the problem that the number of turns of the steering wheel is not limited in the prior art is solved, and the rotation angle of the steering wheel can be obtained more accurately by the arrangement, so that more accurate steering control is realized, and the safety is higher.
Optionally, the travel of the pressure accumulator means is limited to enable the steering wheel to be turned a preset number of turns. The limitation of the number of turns of the steering wheel is realized by limiting the movement stroke of the pressure energy storage device, and the mode does not need to add a new component and has simpler structure.
The steering wheel automatic aligning device further comprises an angle measuring device 10, and the angle measuring device 10 is used for measuring the rotating angle of the rotating shaft 3. The rotation angle of the steering wheel can be obtained by measuring the rotation angle of the rotating shaft 3, and the rotation angle can be used as a basis for adjusting the rotation angle of the wheels according to the rotation angle of the steering wheel.
The angle measuring device 10 may employ an angle encoder or the like.
The automatic steering wheel aligning device further comprises a second transmission assembly, the second transmission assembly is arranged between the rotating shaft 3 and the angle measuring device 10, and the second transmission assembly is used for transmitting the rotation of the rotating shaft 3 to the angle measuring device 10. Through setting up the second transmission assembly, can shift the position that the corner of countershaft 3 was measured to rationally arrange angle measuring device 10, avoid parts such as angle measuring device 10 and pressurized energy storage equipment to take place to interfere and increase the whole height that the steering wheel is from moving back the positive device in order to avoid interfering.
The structural form of the second transmission assembly can be selected in various ways, such as a gear rack transmission device, a worm and gear transmission device and the like.
In the embodiment shown in fig. 3, the second transmission assembly comprises a first gear 7 and a second gear 11, the first gear 7 is mounted on the rotating shaft 3, the second gear 11 is meshed with the first gear 7, and the angle measuring device 10 is connected with the second gear 11 to measure the angle rotated by the second gear 11.
Optionally, the gear ratio of the first gear 7 and the second gear 11 is 1.
The automatic steering wheel aligning device further comprises a rotary disc 8, the rotary disc 8 is fixedly connected with the rotary shaft 3, and the first transmission assembly is connected with the rotary disc 8.
The rotary disk 8 and the rotary shaft 3 can be connected through a flat key 14. The windable member 16 of the first transmission assembly is connected to the turntable 8.
The steering wheel automatic aligning device further comprises a bearing 4 and a bearing seat 5, an inner ring of the bearing 4 is connected with the rotating shaft 3, and an outer ring of the bearing 4 is connected with the mounting plate 6. The bearing seat 5 is arranged on the mounting plate 6, and the outer ring of the bearing 4 is fixed on the bearing seat 5.
The automatic steering wheel aligning device further comprises a connecting shaft 1, the connecting shaft 1 is connected with the rotating shaft 3, and the connecting shaft 1 is a stress end and used for transmitting the rotating torque of the steering wheel to the rotating shaft 3. By providing the connecting shaft 1, the length of the rotating shaft 3 can be increased. The connecting shaft 1 and the rotating shaft 3 can be connected through a flat key 2.
Based on the automatic steering wheel centering device, the invention further provides a vehicle steering system, which comprises the automatic steering wheel centering device.
The vehicle steering system further includes a steering wheel connected to the steering column, and a steering column connected to the rotating shaft 3. The turning moment of the steering wheel can be transmitted to the rotary shaft 3 through the steering column.
The invention also provides a vehicle steering system, which comprises a steering wheel, a controller, a wheel steering driving device and the steering wheel automatic aligning device, wherein the wheel steering driving device is used for driving the wheels to steer, the controller is in signal connection with the angle measuring device 10, and the controller can control the action of the wheel steering driving device according to the rotating angle of the rotating shaft 3 measured by the angle measuring device 10, so that the steering of the wheels is controlled by the wheel steering driving device.
The invention further provides a vehicle comprising the vehicle steering system.
The vehicle further comprises a cab and the mounting plate 6 may be mounted on the floor of the cab by means of a connecting bracket 19. Therefore, the automatic steering wheel aligning device can be conveniently installed on a vehicle.
The positive technical effects of the automatic steering wheel aligning device in the above embodiments are also applicable to the vehicle steering system and the vehicle, and are not described herein again.
The vehicle provided by the invention can be a fire truck, a military vehicle, an engineering mechanical vehicle or an agricultural mechanical vehicle and the like, and after the automatic steering wheel aligning device is applied, aligning control of the steering wheel can be safer and more stable.
The following describes the detailed structure and operation of an embodiment of the steering wheel self-aligning apparatus, the vehicle steering system and the vehicle according to the present invention with reference to fig. 1 to 3:
the following description will take as an example a pressurized energy storage means comprising an elastic element 15.
As shown in fig. 1 to 3, the steering wheel self-righting device comprises a connecting shaft 1, a flat key 2, a rotating shaft 3, a bearing 4, a bearing seat 5, a mounting plate 6, a first gear 7, a rotating disc 8, a snap ring 9, an angle measuring device 10, a second gear 11, a bracket 12, a mounting seat 13, a flat key 14, an elastic member 15, a windable member 16, a sliding rail 17, a sliding block 18 and a connecting frame 19.
As shown in fig. 3, the upper end of the connecting shaft 1 is connected with a steering column, the lower end of the connecting shaft 1 is fixed with the rotating shaft 3 through the flat key 2, the rotating shaft 3 is in interference connection with the inner ring of the bearing 4, the outer ring of the bearing 4 is installed in the bearing seat 5, and the bearing seat 5 is fixed on the installation plate 6. The rotary disc 8 is connected with the rotating shaft 3 through a flat key 14, and the rotary disc 8 is fixed on the rotating shaft 3 through a clamping ring 9. The first gear 7 can also be connected with the rotating shaft 3 through a flat key, the second gear 11 is meshed with the first gear 7, the transmission ratio of the first gear 7 to the second gear 11 is 1, and the angle measuring device 10 is coaxially connected with the second gear 11. The angle measuring device 10 is fixed on a mounting base 13, and the mounting base 13 is fixed on the mounting plate 6. The windable member 16 is connected at one end to the turntable 8 and at the other end to a slider 18, the slider 18 being slidable on a slide rail 17. One end of the elastic element 15 is fixed on the sliding block 18, the other end is fixed on the bracket 12, and the bracket 12 is fixed on the mounting plate 6. The stroke of the elastic member 15 may be set to correspond to the number of turns of the steering wheel. The mounting plate 6 can be fixed directly to the cab floor by means of a connecting bracket 19.
As shown in fig. 1 and fig. 2, when the steering wheel turns left or right, the connecting shaft 1 drives the rotating shaft 3 to rotate, the rotating disc 8 rotates simultaneously, the left end of the windable piece 16 winds around the rotating disc 8, the right end pulls the sliding block 18 to slide left on the sliding rail 17, the elastic piece 15 is driven by the windable piece 16 to move left and be compressed, a return moment is generated, when the elastic piece 15 moves to the stroke end, the number of rotation turns of the steering wheel is limited, the first gear 7 drives the second gear 11 to rotate, the angle measuring device 10 measures the rotation angle of the steering wheel, and a rotation angle signal is transmitted to the controller;
when the steering wheel is loosened, the elastic part 15 moves rightwards to drive the windable part 16 to pull the sliding block 18 to slide rightwards on the sliding rail 17, the rotating disc 8 is driven by the windable part 16 to rotate reversely, so that the rotating shaft 3 and the connecting shaft 1 are driven to rotate, the steering wheel is automatically straightened, meanwhile, the second gear 11 is driven by the first gear 7 to rotate reversely, the angle measuring device 10 measures the reverse rotation angle of the steering wheel, and an angle signal is transmitted to the controller.
After the controller receives the rotation angle of the steering wheel, the controller can control the wheel steering driving device, and the wheel steering driving device drives the wheels to steer, so that the adjustment of the wheel rotation angle can be realized.
By way of illustration of various embodiments of the automatic steering wheel centering device, the vehicle steering system, and the vehicle of the present invention, it can be seen that at least one or more of the following advantages can be achieved by the automatic steering wheel centering device, the vehicle steering system, and the vehicle of the present invention:
1. the rotating torque of the rotating shaft is transmitted to the pressurized energy storage device through the first transmission assembly, so that the pressurized energy storage device is compressed to generate a aligning torque, the rotating shaft is driven to rotate reversely, and the steering wheel is driven to align;
2. whether the rotating shaft rotates forwards or backwards, the rotating torque is transmitted to the pressure energy storage device and then is generated into a return torque in a way of compressing the pressure energy storage device, so that the problem that the return torque is unstable due to the fact that a spring is respectively in a stretching state or a compressing state when a steering wheel turns left and right in the prior art is solved, and the safety and the stability of return torque control are improved;
3. the compressed energy storage device adopts an elastic piece or a combination of a hydraulic cylinder and an energy accumulator, and generates energy capable of forming aligning moment when being compressed, thereby effectively realizing aligning of the steering wheel;
4. the stroke of the pressure-bearing energy storage device can limit the number of turns of the steering wheel, so that the problem that the number of turns of the steering wheel is not limited is solved, the angle of rotation of the steering wheel can be obtained in real time through the angle measuring device, and the turning angle of the wheel can be conveniently adjusted in time;
5. the sliding assembly enables the windable piece and the compressed energy storage device to slide relative to the mounting plate, so that resistance can be reduced, and a guiding effect can be realized;
6. the pressure-bearing energy storage device is detachably mounted and is convenient to replace;
7. the integral structure is compact, the steering column can be directly connected with a cab and a steering column of a vehicle, and the installation is simple and convenient.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (16)
1. A steering wheel self-righting device, comprising:
a mounting plate (6);
the rotating shaft (3) is arranged on the mounting plate (6) and used for receiving the rotating torque of the steering wheel and rotating relative to the mounting plate (6) under the action of the rotating torque;
the pressure-bearing energy storage device is arranged on the mounting plate (6); and
the first transmission assembly is connected with the rotating shaft (3) and used for transmitting the rotating torque of the rotating shaft (3) to the pressure-bearing energy storage device, the pressure-bearing energy storage device is compressed to generate a aligning torque when the rotating shaft (3) rotates in the forward direction or in the reverse direction, and the rotating shaft (3) is driven to rotate by the aligning torque to drive the steering wheel to align;
the first transmission assembly comprises a windable member (16), a first end of the windable member (16) is connected with the rotating shaft (3), and a second end of the windable member (16) is movably arranged on the mounting plate (6) so as to wind around the rotating shaft (3) when the rotating shaft (3) rotates and compress the pressure energy storage device when the wind is wound;
the first transmission assembly further comprises a sliding assembly for sliding the second end of the windable member (16) relative to the mounting plate (6).
2. The automatic steering wheel return device according to claim 1, wherein the pressurized energy storage device comprises an elastic member (15), the elastic member (15) is connected to the first transmission assembly and is compressed by the first transmission assembly to generate elastic potential energy, and the elastic potential energy forms the return moment.
3. The steering wheel self-righting device of claim 1, wherein the pressurized energy storage device comprises a hydraulic cylinder and an energy accumulator, a rod of the hydraulic cylinder is connected with the first transmission assembly, a rodless cavity of the hydraulic cylinder is communicated with the energy accumulator, the rod is compressed and retracted under the action of the first transmission assembly, so that hydraulic oil in the rodless cavity is stored in the energy accumulator, and the energy stored in the energy accumulator forms the righting moment.
4. The steering wheel self-righting device according to claim 1, wherein a first end of the pressurized energy storage device is fixed relative to the mounting plate (6), and a second end of the pressurized energy storage device is connected to a second end of the windable member (16).
5. The steering wheel self-righting device according to claim 1, wherein the sliding assembly comprises a sliding block (18) and a sliding rail (17), the sliding rail (17) is mounted on the mounting plate (6), the sliding block (18) and the sliding rail (17) are mutually matched and slide along the sliding rail (17), and the second end of the windable member (16) and the second end of the pressurized energy storage device are both connected with the sliding block (18).
6. The steering wheel self-righting apparatus as set forth in claim 1, wherein said windable member (16) comprises a belt, a wire rope or a chain.
7. The steering wheel self-righting apparatus as set forth in claim 1, wherein said pressurized energy storage device is configured to limit a number of turns of said steering wheel.
8. The steering wheel self-righting apparatus as set forth in claim 7, wherein the travel of said pressurized energy storage device is limited to enable the steering wheel to rotate a preset number of turns.
9. The steering wheel self-righting apparatus as set forth in claim 1, wherein said pressurized energy storage device is removably mounted to said mounting plate (6).
10. The steering wheel self-aligning apparatus according to any one of claims 1 to 9, further comprising an angle measuring device (10), wherein the angle measuring device (10) is configured to measure an angle by which the rotation shaft (3) is rotated.
11. The steering wheel self-righting device according to claim 10, further comprising a second transmission assembly disposed between the rotating shaft (3) and the angle measuring device (10), the second transmission assembly being configured to transmit the rotation of the rotating shaft (3) to the angle measuring device (10).
12. The steering wheel self-righting device according to claim 11, wherein the second transmission assembly comprises a first gear (7) and a second gear (11), the first gear (7) is mounted on the rotating shaft (3), the second gear (11) is meshed with the first gear (7), and the angle measuring device (10) is connected with the second gear (11) to measure the angle rotated by the second gear (11).
13. A vehicle steering system comprising the steering wheel self-aligning device of any one of claims 1 to 12.
14. The vehicle steering system according to claim 13, characterized in that it further comprises a steering wheel and a steering column, the steering wheel being connected to the steering column, the steering column being connected to the rotating shaft (3).
15. A vehicle steering system, characterized by comprising a steering wheel, a controller, a wheel steering drive and an automatic steering wheel return device according to any one of claims 10 to 12, wherein the controller is in signal connection with the angle measuring device (10) to control the wheel steering drive according to the rotation angle of the rotating shaft (3) measured by the angle measuring device (10) to control the steering of the wheels.
16. A vehicle characterized by comprising the vehicle steering system according to any one of claims 13 to 15.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811600058.4A CN109552410B (en) | 2018-12-26 | 2018-12-26 | Automatic steering wheel aligning device, vehicle steering system and vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811600058.4A CN109552410B (en) | 2018-12-26 | 2018-12-26 | Automatic steering wheel aligning device, vehicle steering system and vehicle |
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| CN109552410A CN109552410A (en) | 2019-04-02 |
| CN109552410B true CN109552410B (en) | 2023-02-10 |
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| CN201811600058.4A Active CN109552410B (en) | 2018-12-26 | 2018-12-26 | Automatic steering wheel aligning device, vehicle steering system and vehicle |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110155155A (en) * | 2019-04-25 | 2019-08-23 | 徐工集团工程机械有限公司 | A kind of wire-controlled steering system and fire fighting truck |
| CN112009225B (en) * | 2020-08-12 | 2024-07-19 | 北京电子科技职业学院 | Vehicle translational drive assembly and vehicle |
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| CN109552410A (en) | 2019-04-02 |
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