CN112249157B - Ackerman steering independent suspension steering system, vehicle and power assembly system - Google Patents
Ackerman steering independent suspension steering system, vehicle and power assembly system Download PDFInfo
- Publication number
- CN112249157B CN112249157B CN202010969978.4A CN202010969978A CN112249157B CN 112249157 B CN112249157 B CN 112249157B CN 202010969978 A CN202010969978 A CN 202010969978A CN 112249157 B CN112249157 B CN 112249157B
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- steering
- knuckle
- hub
- nut
- ackermann
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/18—Steering knuckles; King pins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D3/00—Steering gears
- B62D3/02—Steering gears mechanical
- B62D3/04—Steering gears mechanical of worm type
- B62D3/06—Steering gears mechanical of worm type with screw and nut
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D7/00—Steering linkage; Stub axles or their mountings
- B62D7/20—Links, e.g. track rods
Abstract
The embodiment of the invention provides an Ackerman steering independent suspension steering system, a vehicle and a power assembly system, wherein the system comprises: the device comprises a power mechanism, a transmission mechanism, a steering knuckle and a hub; the power mechanism is connected with the transmission mechanism; the transmission mechanism is connected with the steering knuckle; the steering knuckle is rotationally connected with the hub; the steering knuckle comprises a steering knuckle seat and a steering knuckle arm, wherein the steering knuckle seat is rotationally connected with the hub, and the steering knuckle arm is connected with the steering knuckle seat; the transmission mechanism comprises a steering pull rod and a steering slide block; one end of the steering pull rod is connected with the power mechanism, and the other end of the steering pull rod is connected with the steering sliding block; the steering slider is connected with the steering knuckle arm in a sliding mode. According to the invention, the steering mechanism is improved, and large-angle Ackermann steering is realized, so that the abrasion of tires is reduced, the steering flexibility of the automobile can be improved by the independent suspension steering mechanism for realizing large-angle steering, and the steering radius of the automobile is smaller.
Description
Technical Field
The invention relates to the technical field of vehicle control, in particular to an Ackerman steering independent suspension steering system, a vehicle and a power assembly system.
Background
With the continuous growth of economy in China and the rapid development of the automobile industry, the problem of urban traffic congestion is increasingly aggravated. The traditional steering system needs a steering trapezoid mechanism to realize the Ackerman steering relationship, but the maximum rotation angle of the front wheel of the automobile is between 30 and 40 degrees due to the limitation of the trapezoid base angle and the motion relationship of the steering trapezoid.
The steering mechanism capable of realizing large-angle steering of the automobile comprises inhaul cable transmission, worm and gear transmission, double-crank transmission, belt transmission and the like. Although the cable transmission is flexible in spatial arrangement, the cable is elastic and may swing during the driving process, so that the steering precision is insufficient and certain dangerousness is caused. Although the worm gear can accurately realize steering, as the gear needs a lubricating system, a plurality of additional parts need to be added, the unsprung mass of the automobile is increased, and the operation stability of the automobile is not facilitated; and the wear of the gears is exacerbated as the wheels hop up and down. And the double crank transmission uses more rods, and occupies larger suspension space. Belt drives can exacerbate belt wear when the wheels hop up and down, and are not suitable for driving on uneven road surfaces.
The present invention has been made in view of the above.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the Ackermann steering independent suspension steering system is provided, the defect that the steering angle of a front wheel of an automobile is smaller due to the limitation of the motion relation of a trapezoid bottom angle and a steering trapezoid in a steering mechanism in the prior art is overcome, the steering flexibility of the automobile can be improved by the large-angle steering independent suspension steering mechanism, the steering radius of the automobile is smaller, the traffic jam can be effectively reduced, a smaller space is needed during parking, the space utilization rate of parking is improved, and the Ackermann steering independent suspension steering system has great advantages in the aspect of parking and warehousing of the automobile.
The invention also provides a vehicle.
The invention further provides a power assembly system.
According to an embodiment of the first aspect of the present invention, an ackermann steering independent suspension steering system includes: the device comprises a power mechanism, a transmission mechanism, a steering knuckle and a hub;
the power mechanism is connected with the transmission mechanism;
the transmission mechanism is connected with the steering knuckle;
the steering knuckle is rotationally connected with the hub;
the steering knuckle comprises a steering knuckle seat and a steering knuckle arm, wherein the steering knuckle seat is rotationally connected with the hub, and the steering knuckle arm is connected with the steering knuckle seat;
the transmission mechanism comprises a steering pull rod and a steering slide block;
one end of the steering pull rod is connected with the power mechanism, and the other end of the steering pull rod is connected with the steering sliding block;
the steering slider is connected with the steering knuckle arm in a sliding mode.
According to one embodiment of the invention, the steering linkage is connected to the steering slide via a first ball joint.
Specifically, the steering pull rod and the steering sliding block are connected through the first spherical hinge, so that the geometrical relation of a steering trapezoid used under the Ackerman steering condition is avoided, and the Ackerman steering condition can be well met when the automobile is steered at a large angle under the Ackerman steering condition.
According to one embodiment of the invention, the relative positions between the steering slider and the knuckle arm comprise a first position, a second position and a third position;
when the steering slider moves to the first position on the knuckle arm, the hub is in an initial state;
when the steering slider moves to the second position on the steering knuckle arm, the hub is at the extreme position of a first steering state;
when the steering slider moves to the third position on the steering knuckle arm, the hub is at the extreme position of a second steering state;
wherein the steering slide in the first position is located between the steering slide in the second position and the steering slide in the third position;
the steering direction of the wheel hub in the first steering state is opposite to that in the second steering state.
Specifically, the steering slider has at least three sliding positions on the steering knuckle arm, wherein the first position is that the steering angle of the hub is 0 degrees, when the steering pull rod applies thrust to the steering slider, the steering slider moves along the extending direction of the steering knuckle arm, and the hub realizes steering; the hub reaches a steering limit when the steering slider moves to the second position; when the steering pull rod applies force in the other direction to the steering slide block, the steering slide block moves along the extending direction of the steering knuckle arm to realize steering in the other direction, and the steering of the hub in the other direction reaches the limit when the steering slide block moves to the third position along the steering knuckle arm.
It should be noted that, in the scheme, through the arrangement of the structures such as the knuckle arm, the steering slider and the steering rod, when the wheel hub steers, the steering rod does not swing left and right along the horizontal plane, so that the occupied space of the steering mechanism is reduced to a certain extent.
According to one embodiment of the invention, a bearing is arranged between the knuckle mount and the wheel hub.
In particular, the knuckle block is connected in rotation to the hub via a bearing.
According to one embodiment of the invention, the power mechanism comprises a driving gear, a driven gear, a steering screw and a steering nut;
the driving gear is meshed with the driven gear;
the steering screw rod is fixedly connected with the driven gear, and the rotation center of the steering screw rod is overlapped with that of the driven gear;
the steering nut is connected with the steering screw rod through threads and can move along the extending direction of the steering screw rod;
the outer part of the steering nut is connected with the steering pull rod.
Specifically, the power transmission is realized through the driving gear, and the power transmission of the driving gear to the steering pull rod is realized through the driven gear.
Furthermore, a steering screw rod is arranged on the driven gear, the driven gear drives the steering screw rod to rotate through gear transmission, a steering nut is arranged on the steering screw rod, when the steering screw rod rotates, the steering nut changes displacement along the steering screw rod, and meanwhile the steering nut drives the steering pull rod to rotate.
It should be noted that, in this scheme, a limiting structure is further provided for limiting the rotation of the steering nut and the steering screw together, and this scheme is not described in detail, and it is common in the art that the steering screw and the steering nut are in threaded transmission and the rotation of the steering nut is limited. The turning of the steering screw is converted into the linear movement of the steering nut by referring to the conventional arrangement in the field.
According to one embodiment of the invention, the steering nut is connected to the steering rod by a second ball joint.
Particularly, through setting up first spherical hinge and second spherical hinge for on steering system's in this scheme weight is concentrated on driving gear, driven gear and steering screw, driving gear, driven gear and steering screw pass through the body frame body coupling of bearing and vehicle, belong to the spring-loaded quality, consequently the steering system that this scheme provided can not lead to the increase of unsprung mass, is favorable to guaranteeing good operating stability.
According to one embodiment of the invention, the steering pull rod, the steering slide block, the driven gear, the steering screw rod and the steering nut form a group of adjusting components for adjusting the steering of the hub;
the two groups of adjusting assemblies are connected with the same driving gear to adjust the steering of the hubs on two sides;
wherein the turning screw rods or the turning nuts in the two groups of adjusting assemblies are opposite in thread turning direction.
Specifically, the threads of the steering screw rod or the steering nut are turned in opposite directions, so that the steering adjustment of the hubs on the left side and the right side can be realized by adopting one driving gear.
According to one embodiment of the invention, the plane of the knuckle arm is perpendicular to the steering screw.
Specifically, an arrangement scheme of the steering system is provided, wherein a plane where a steering knuckle arm is located is perpendicular to a steering screw rod, and therefore the occupied space of a steering mechanism is reduced to a certain extent.
A vehicle according to an embodiment of a second aspect of the invention includes: the steering system of the Ackerman steering independent suspension is provided.
A powertrain system according to an embodiment of a third aspect of the invention includes: the steering system of the Ackerman steering independent suspension is provided.
One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: according to the Ackermann steering independent suspension steering system, the vehicle and the power assembly system, the large-angle Ackermann steering is realized by improving the steering mechanism, so that the abrasion of tires is reduced, the steering flexibility of the vehicle can be improved by the large-angle steering independent suspension steering mechanism, the steering radius of the vehicle is smaller, the traffic jam can be effectively reduced, only a smaller space is needed during parking, the space utilization rate of parking is improved, and the Ackermann steering independent suspension steering system has great advantages in the aspect of parking and warehousing of the vehicle.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a first schematic illustration of the assembled relationship of an Ackermann steering independent suspension steering system according to an embodiment of the present invention;
FIG. 2 is a second schematic illustration of the assembled relationship of an Ackermann steering independent suspension steering system according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the direction A of FIG. 2;
FIG. 4 is a third schematic illustration of the mounting relationship of an Ackermann steering independent suspension steering system according to an embodiment of the present invention;
FIG. 5 is an enlarged view of the B direction of FIG. 4;
FIG. 6 is a fourth schematic view of the assembly of an Ackermann steering independent suspension steering system according to an embodiment of the present invention;
FIG. 7 is a schematic view showing the assembly relationship of a steering slider and a knuckle arm in the Ackermann independent suspension steering system according to the embodiment of the present invention;
FIG. 8 is a first schematic view of the positional relationship of the steering slider and the knuckle arm in an Ackermann steerable independent suspension steering system according to an embodiment of the present invention;
fig. 9 is a second schematic view of the positional relationship of the steering slider and the knuckle arm in the ackermann steering independent suspension steering system according to the embodiment of the present invention.
Reference numerals:
1. a hub; 2. a knuckle mount; 3. a knuckle arm; 4. a steering tie rod; 5. a steering slider; 6. a first spherical hinge; 7. a driving gear; 8. a driven gear; 9. a steering screw; 10. a steering nut; 11. a second spherical hinge; 12. a first position; 13. a second position; 14. a third position.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Fig. 1 is a first schematic view of an assembly relationship of an ackermann steering independent suspension steering system according to an embodiment of the present invention. As can be seen from fig. 1, the ackermann steering independent suspension steering system provided by the invention comprises a power mechanism, a transmission mechanism, a steering knuckle and a hub 1.
The power mechanism comprises a driving gear 7, a driven gear 8, a steering screw 9 and a steering nut 10. The transmission mechanism comprises a steering pull rod 4 and a steering slide block 5. One end of the steering pull rod 4 is connected with the steering sliding block 5 through a first spherical hinge 6, and the other end of the steering pull rod is connected with the steering nut 10 through a second spherical hinge 11.
Further, the steering knuckle comprises a steering knuckle seat 2 and a steering knuckle arm 3 connected with the steering knuckle seat 2, and the steering knuckle arm 3 is connected with a steering sliding block 5 in a sliding mode; the knuckle mount 2 is preferably fixedly connected with the knuckle arm 3.
It should be noted that one end of the steering linkage 4 is connected to the steering slider 5 through the first spherical hinge 6, and the other end is also connected to the steering nut 10 through the second spherical hinge 11, and the steering slider 5 can move back and forth along a straight line by controlling the steering nut 10 to move vertically up and down. The steering nut 10 is driven by the steering screw 9, the steering screw 9 is fixedly connected with the driven gear 8, the driven gear 8 is driven by the driving gear 7, and the steering screw 9, the driven gear 8 and the driving gear 7 are all fixed to the frame through bearings and only do rotary motion.
Fig. 2 and 3 are a second schematic view of an assembly relationship of an ackermann steering independent suspension steering system according to an embodiment of the present invention and an enlarged schematic view of a direction a of fig. 2. As can be seen from fig. 2 and 3, the plane of the knuckle arm 3 is perpendicular to the steering screw 9, so that the arrangement can not only avoid occupying too much space, but also ensure that the torque received by the steering slider 5 is minimum and the efficiency of the mechanism transmission is maximum in the transmission process.
Fig. 4 to 6 are third and fourth schematic diagrams of the assembly relationship of the ackermann steering independent suspension steering system according to the embodiment of the invention, and a schematic diagram of the direction B in an enlarged manner. As can be seen from fig. 4 to 6, the hub 1 simulates the state during steering, when turning left, the driving gear 7 rotates and drives the left and right steering screws 9 to rotate, and because the thread directions of the two screws are opposite, the left steering nut 10 moves upwards and pulls the steering pull rod 4, so that the left hub 1 turns left; the right steering nut 10 moves down, pushing the right steering linkage 4, causing the right hub 1 to turn left as well.
Fig. 7 to 9 are schematic diagrams of an assembly relationship between the steering slider 5 and the knuckle arm 3, and first and second schematic diagrams of a positional relationship between the steering slider 5 and the knuckle arm 3 in the ackermann steering independent suspension steering system according to the embodiment of the present invention. As can be seen from fig. 7 to 9, the arrangement relationship of the knuckle arm 3 and the steering slider 5, and the relative positional relationship between the steering slider 5 and the steering nut 10. In the initial position, the first position 12, the initial position of the steering nut 10 is at a certain height relative to the steering slide 5.
Fig. 7 shows a relative relationship between the knuckle arm 3 and the knuckle slider 5, which can be realized in practical applications by referring to the relative relationship between the knuckle arm 3 and the knuckle slider 5 shown in fig. 7 of the present invention and combining corresponding arrangement in the art.
Further, as shown in fig. 8, fig. 8 shows the steering slide 5 in a first position 12, a second position 13 and a third position 14 on the knuckle arm 3 under the influence of the steering tie rod 4; it can be seen from fig. 8 that the distance between the two extreme positions of the steering slide 5 on the knuckle arm 3 is different, which is due to the difference in the steering of the wheel hub 1. The third position 14 of the steering slider 5 is the position of the steering slider 5 of the hub 1 on the side closer to the steering center when the hub 1 is steered.
Further, as shown in fig. 9, fig. 9 includes three right triangles, wherein the hypotenuse of the triangle indicates the steering rod 4, the vertical side indicates the height of the steering nut 10 relative to the steering slider 5, the horizontal side indicates the horizontal distance between the steering nut 10 and the steering slider 5, the first position 12 is the steering rod 4 at the initial position, the second position 13 indicates that the steering nut 10 moves down and the left hub 1 rotates right, and the third position 14 indicates that the steering nut 10 moves up and the left hub 1 rotates left. For the right hub 1, the steering relationship is opposite to that of the left hub 1, when the steering nut 10 moves downwards, the right hub 1 rotates left, and when the steering nut 10 moves upwards, the right hub 1 rotates right. When the distance zL of the upward movement of the left steering nut 10 is equal to the distance zR of the downward movement of the right steering nut 10, the left and right hubs 1 both turn to the left, and the moving distance yL of the steering slider 5 is always greater than yR due to the geometric relationship of the triangle, which indicates that the steering angle of the left hub 1 is always greater than that of the right hub 1 when the automobile turns to the left. And parameters such as the size of the steering pull rod 4, the size of a steering knuckle, the length of a sliding rail, the size of a gear and the like can be properly designed, so that the Ackerman geometric relationship is met when the automobile is steered.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features 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.
In some embodiments of the present invention, as shown in fig. 1-9, the present solution provides an ackermann steering independent suspension steering system comprising: the device comprises a power mechanism, a transmission mechanism, a steering knuckle and a hub 1; the power mechanism is connected with the transmission mechanism; the transmission mechanism is connected with the steering knuckle; the steering knuckle is rotationally connected with the hub 1; the steering knuckle comprises a steering knuckle seat 2 connected with the hub 1 in a rotating mode and a steering knuckle arm 3 connected with the steering knuckle seat 2; the transmission mechanism comprises a steering pull rod 4 and a steering slide block 5; one end of the steering pull rod 4 is connected with the power mechanism, and the other end is connected with the steering slide block 5; the steering slider 5 is slidably connected to the knuckle arm 3.
The invention provides an Ackerman steering independent suspension steering system which can realize large-angle steering of an automobile. The steering slide block 5 is controlled to move horizontally by driving the steering nut 10 to move up and down, so that the steering knuckle is pushed or pulled to steer the wheel. Based on the geometric relationship between the hypotenuse and the right-angle side of the right-angled triangle, the difference of the steering angles of the left hub 1 and the right hub 1 is realized, and large-angle ackermann steering can be realized by reasonably planning the parameters of the mechanism. The invention has simple structure, flexible design scheme and lower unsprung mass, is beneficial to manufacturing and realizing the light weight of the automobile and is a novel steering mechanism.
In some embodiments, the steering linkage 4 is connected to the steering slide 5 by a first ball joint 6.
Specifically, the steering pull rod 4 and the steering slide block 5 are connected through the first spherical hinge 6, so that the geometrical relation of a steering trapezoid used under the Ackerman steering condition is avoided, and the Ackerman steering condition can be well met when the automobile is steered at a large angle under the Ackerman steering condition.
In some embodiments, the relative positions between the steering slider 5 and the knuckle arm 3 include a first position 12, a second position 13 and a third position 14; when the steering slider 5 is moved to the first position 12 on the knuckle arm 3, the hub 1 is in an initial state; when the steering slider 5 is moved to the second position 13 on the knuckle arm 3, the hub 1 is in the extreme position of the first steering state; when the steering slider 5 moves to the third position 14 on the knuckle arm 3, the hub 1 is in the extreme position of the second steering state; wherein the turning slide 5 in the first position 12 is located between the turning slide 5 in the second position 13 and the third position 14; the steering direction of the hub 1 in the first and second steering states is opposite.
Specifically, the steering slider 5 has at least three sliding positions on the steering knuckle arm 3, wherein the first position 12 is that the steering angle of the hub 1 is 0 °, when the steering rod 4 applies thrust to the steering slider 5, the steering slider 5 moves along the extending direction of the steering knuckle arm 3, and the hub 1 realizes steering; the wheel hub 1 reaches the steering limit when the steering slide 5 is moved to the second position 13; when the steering linkage 4 applies a force in the other direction to the steering slider 5, the steering slider 5 effects a steering in the other direction in the direction in which the knuckle arm 3 extends, the steering of the wheel hub 1 in the other direction reaching a limit when the steering slider 5 is moved to the third position 14.
It should be noted that in the present solution, by arranging the structures such as the knuckle arm 3, the steering slider 5, and the steering rod 4, when the wheel hub 1 is steering, the steering rod 4 does not swing left and right along a horizontal plane, so that the occupied space of the steering mechanism is reduced to a certain extent.
In some embodiments, a bearing is provided between the knuckle mount 2 and the hub 1.
In particular, the knuckle block 2 is connected in rotation to the hub 1 via a bearing.
In some embodiments, the power mechanism comprises a driving gear 7, a driven gear 8, a steering screw 9 and a steering nut 10; the driving gear 7 is meshed with the driven gear 8; the steering screw 9 is fixedly connected with the driven gear 8, and the rotation centers of the steering screw 9 and the driven gear 8 are overlapped; the steering nut 10 is connected with the steering screw 9 through threads and can move along the extending direction of the steering screw 9; the steering nut 10 is connected on the outside to the steering rod 4.
Specifically, the power transmission is realized through the driving gear 7, and the power transmission of the driving gear 7 to the steering rod 4 is realized through the driven gear 8.
Furthermore, a steering screw 9 is arranged on the driven gear 8, the driven gear 8 drives the steering screw 9 to rotate through gear transmission, a steering nut 10 is arranged on the steering screw 9, when the steering screw 9 rotates, the steering nut 10 changes displacement along the steering screw 9, and meanwhile, the steering nut 10 drives the steering pull rod 4 to rotate.
It should be noted that, in the present embodiment, a limiting structure is further provided for limiting the rotation of the steering nut 10 and the steering screw 9 together, which is not described in detail in the present embodiment, and it is common in the art that the steering screw 9 and the steering nut 10 are in threaded transmission, and the rotation of the steering nut 10 is limited. The conversion of the rotation of the steering screw 9 into a linear movement of the steering nut 10 is as far as conventional arrangements in the art are concerned.
In some embodiments, the steering nut 10 is connected to the steering rod 4 by a second ball joint 11.
Particularly, through setting up first spherical hinge 6 and second spherical hinge 11 for the weight of the a steering system in this scheme is concentrated on driving gear 7, driven gear 8 and steering screw 9, and driving gear 7, driven gear 8 and steering screw 9 pass through the body frame body coupling of bearing and vehicle, belong to the spring-loaded quality, and the a steering system who consequently this scheme provided can not lead to the increase of unsprung mass, is favorable to guaranteeing good operating stability.
In some embodiments, the steering tie rod 4, the steering slider 5, the driven gear 8, the steering screw 9 and the steering nut 10 form a set of adjusting components for adjusting the steering of the hub 1; the two groups of adjusting assemblies are connected with the same driving gear 7, so that the steering of the hubs 1 on the two sides can be adjusted; wherein the thread directions of the steering screw rods 9 or the steering nuts 10 in the two groups of adjusting assemblies are opposite.
Specifically, the steering adjustment of the left and right hubs 1 can be realized by using one driving gear 7 by reversing the thread direction of the steering screw 9 or the steering nut 10.
It should be noted that, in order to ensure that the steering angles of the left and right hubs 1 meet ackermann steering conditions, the left and right steering mechanisms have a symmetrical structure, and the only difference is the turning direction of the threads of the steering screw 9 or the steering nut 10. The driving gear 7 in the middle drives two driven gears 8 on the left and right sides simultaneously, and the basic parameters of the two driven gears 8 are the same. When steering, the driving gear 7 rotates, and the steering nuts 10 on the left and right sides need to move up and down, respectively, and for this purpose, the threads of the steering nuts 10 on the left and right sides or the threads of the steering screw 9 should be opposite in rotation direction.
In some embodiments, the plane of the knuckle arm 3 is perpendicular to the steering screw 9.
Specifically, an arrangement scheme of the steering system is provided, and a plane where the knuckle arm 3 is located is perpendicular to the steering screw 9, so that the occupied space of the steering mechanism is reduced to a certain extent.
In some embodiments of the present invention, the present solution provides a vehicle comprising: the steering system of the Ackerman steering independent suspension is provided.
In some embodiments of the present invention, the present solution provides a powertrain system comprising: the steering system of the Ackerman steering independent suspension is provided.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Finally, it should be noted that: the above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.
Claims (7)
1. An ackermann steering independent suspension steering system, comprising: the device comprises a power mechanism, a transmission mechanism, a steering knuckle and a hub;
the power mechanism is connected with the transmission mechanism; the transmission mechanism is connected with the steering knuckle; the steering knuckle is rotationally connected with the hub; the steering knuckle comprises a steering knuckle seat and a steering knuckle arm, wherein the steering knuckle seat is rotationally connected with the hub, and the steering knuckle arm is connected with the steering knuckle seat; the transmission mechanism comprises a steering pull rod and a steering slide block; one end of the steering pull rod is connected with the power mechanism, and the other end of the steering pull rod is connected with the steering sliding block; the steering sliding block is connected with the steering knuckle arm in a sliding mode;
the power mechanism comprises a driving gear, a driven gear, a steering screw and a steering nut; the driving gear is meshed with the driven gear; the steering screw rod is fixedly connected with the driven gear, and the rotation center of the steering screw rod is overlapped with that of the driven gear; the steering nut is connected with the steering screw rod through threads and can move along the extending direction of the steering screw rod; the outer part of the steering nut is connected with the steering pull rod;
the steering nut is connected with the steering pull rod through a second spherical hinge;
the steering slide block, the driven gear, the steering screw rod and the steering nut form a group of adjusting components for adjusting the steering of the hub; the two groups of adjusting assemblies are connected with the same driving gear to adjust the steering of the hubs on two sides; wherein the turning screw rods or the turning nuts in the two groups of adjusting assemblies are opposite in thread turning direction.
2. An ackermann steering system according to claim 1, wherein the steering rod is connected to the steering slider by a first ball joint.
3. An ackermann steering independent suspension steering system according to claim 1, wherein the relative positions between the steering slider and the knuckle arm comprise a first position, a second position and a third position;
when the steering slider moves to the first position on the knuckle arm, the hub is in an initial state;
when the steering slider moves to the second position on the steering knuckle arm, the hub is at the extreme position of a first steering state;
when the steering slider moves to the third position on the steering knuckle arm, the hub is at the extreme position of a second steering state;
wherein the steering slide in the first position is located between the steering slide in the second position and the steering slide in the third position;
the steering direction of the wheel hub in the first steering state is opposite to that in the second steering state.
4. An ackermann steering system according to claim 1, wherein a bearing is provided between the knuckle mount and the hub.
5. An ackermann steering system according to claim 1, wherein the knuckle arms lie in a plane perpendicular to the steering screw.
6. A vehicle, characterized by comprising: an ackermann steering system according to any one of claims 1 to 5.
7. A powertrain system, comprising: an ackermann steering system according to any one of claims 1 to 5.
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| CN202010969978.4A CN112249157B (en) | 2020-09-15 | 2020-09-15 | Ackerman steering independent suspension steering system, vehicle and power assembly system |
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| CN202010969978.4A CN112249157B (en) | 2020-09-15 | 2020-09-15 | Ackerman steering independent suspension steering system, vehicle and power assembly system |
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| CN112249157A CN112249157A (en) | 2021-01-22 |
| CN112249157B true CN112249157B (en) | 2021-11-12 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7315090A (en) * | 1973-11-02 | 1975-05-07 | Skf Svenska Kullagerfab Ab | STEERING. |
| DE102004053725A1 (en) * | 2004-11-06 | 2006-05-11 | Zf Friedrichshafen Ag | Vehicle e.g. construction vehicle, has axle realizing requested steering angle by Ackermann steering, whose steering kinematics is modified in area between steering links and wheel hubs based on required angle |
| KR20060072269A (en) * | 2004-12-23 | 2006-06-28 | 현대자동차주식회사 | Ackerman tendency control mechanism |
| JP2010188914A (en) * | 2009-02-19 | 2010-09-02 | Honda Motor Co Ltd | Steering device for vehicle |
| CN202054051U (en) * | 2010-12-09 | 2011-11-30 | 赵金叶 | Vehicle body steering connecting rod |
| CN104354758B (en) * | 2014-11-25 | 2017-01-04 | 广西大学 | A kind of list based on bolt and nut drives four-wheel steering mechanism |
| CN111086552A (en) * | 2018-10-23 | 2020-05-01 | 山东交通学院 | Independent suspension self-adaptive steering transmission mechanism and implementation method thereof |
| CN110091917A (en) * | 2019-04-09 | 2019-08-06 | 山东理工大学 | Hub motor electric vehicle with four-wheel independent steering function |
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2020
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