CN118124677A - Automobile chassis and automobile - Google Patents

Automobile chassis and automobile Download PDF

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Publication number
CN118124677A
CN118124677A CN202410320310.5A CN202410320310A CN118124677A CN 118124677 A CN118124677 A CN 118124677A CN 202410320310 A CN202410320310 A CN 202410320310A CN 118124677 A CN118124677 A CN 118124677A
Authority
CN
China
Prior art keywords
steering
arm
suspension
vehicle chassis
axle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410320310.5A
Other languages
Chinese (zh)
Inventor
朱庆晓
李骏
杨盛生
余冬
陆挺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Liuzhou Motor Co Ltd
Original Assignee
Dongfeng Liuzhou Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongfeng Liuzhou Motor Co Ltd filed Critical Dongfeng Liuzhou Motor Co Ltd
Priority to CN202410320310.5A priority Critical patent/CN118124677A/en
Publication of CN118124677A publication Critical patent/CN118124677A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
    • B60B35/003—Steerable axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/08—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having fluid spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/11—Understructures, i.e. chassis frame on which a vehicle body may be mounted with resilient means for suspension, e.g. of wheels or engine; sub-frames for mounting engine or suspensions
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention discloses an automobile chassis and an automobile, wherein the automobile chassis comprises a frame, an axle, a suspension and a steering mechanism, and the axle comprises two steering knuckles; the suspension connects the frame and the axle; the steering mechanism comprises a steering device, a steering swing arm, two steering tie rods and two knuckle arms, wherein the steering device is connected with the fulcrum ends of the steering swing arm, two sides of the free ends of the steering swing arm are correspondingly and rotatably connected with one ends of the two steering tie rods, the other ends of the two steering tie rods are correspondingly connected with the free ends of the two knuckle arms, and the fulcrum ends of the two knuckle arms are correspondingly connected with the two knuckles. The technical scheme provided by the invention realizes the symmetry of left and right steering and improves the steering performance of the automobile.

Description

Automobile chassis and automobile
Technical Field
The invention relates to the technical field of automobiles, in particular to an automobile chassis and an automobile.
Background
In some vehicles, especially existing heavy-duty commercial vehicles, typically employ leaf spring suspensions, with leaf springs serving as both the load carrying unit and the guide mechanism for the suspension, the axle being a one-piece axle, the left and right wheels being connected by a one-piece i-beam, the steering system employing a one-sided arrangement, the steering gear driving the tie rod, the tie rod driving one-sided wheels and driving the other-sided wheels through the tie rod, this arrangement potentially causing the following problems:
1) The steering wheel can deflect when the vehicle is empty and fully loaded;
2) The vehicle is deviated during braking;
3) When the road surface is fluctuated, a steering wheel is driven in the process of suspension bounce;
4) In the driving process, the steering ratio (the ratio of steering wheel angle to wheel angle) corresponding to the steering wheel to the left is inconsistent with the steering ratio corresponding to the steering wheel to the right, so that the steering confidence of a driver is affected.
Disclosure of Invention
The invention mainly aims to provide an automobile chassis and an automobile, and aims to realize symmetrical left and right steering and improve steering performance of the automobile.
In order to achieve the above object, the present invention provides an automobile chassis, comprising:
A frame;
an axle comprising two knuckles;
a suspension connecting the frame and the axle; and
The steering mechanism comprises a steering device, a steering swing arm, two steering tie rods and two knuckle arms, wherein the steering device is connected with the fulcrum ends of the steering swing arm, two sides of the free ends of the steering swing arm are correspondingly and rotatably connected with one ends of the two steering tie rods, the other ends of the two steering tie rods are correspondingly connected with the free ends of the two knuckle arms, and the fulcrum ends of the two knuckle arms are correspondingly connected with the two knuckles.
Optionally, the diverter comprises a recirculating ball diverter.
Optionally, the axle comprises a disconnect axle.
Optionally, the frame comprises two longitudinal beams, and the automobile chassis further comprises a subframe;
the suspension comprises two double-fork arm structures corresponding to two steering knuckles, each double-fork arm structure comprises an upper fork arm, a lower fork arm and a supporting arm, the upper end of each supporting arm is rotationally connected with one end of each upper fork arm, the other end of each upper fork arm is rotationally connected with a corresponding longitudinal beam, the lower end of each supporting arm is rotationally connected with one end of each lower fork arm, the other end of each lower fork arm is rotationally connected with a subframe, a supporting part laterally extends from the upper end of each supporting arm, a connecting part laterally extends from the middle position of each supporting arm, each supporting part is connected with the corresponding frame through an elastic element, and each connecting part is connected with the corresponding steering knuckle through a master pin.
Optionally, the auxiliary frame includes two supports, two the one end of support is connected each other, two the other end of support corresponds and connects two longerons, two the support the one end of being close to the longeron still is connected with the mounting bracket, the steering gear install in the mounting bracket, two the one end of support has relative inboard and the outside of being on the back, each the other end rotation of fork arm down is installed in the outside of corresponding support.
Optionally, an adjusting gasket is further arranged between each lower fork arm and the corresponding outer side of the bracket.
Optionally, the elastic element comprises an air spring.
Optionally, the suspension further comprises two shock absorbers, one end of each shock absorber is connected with the corresponding longitudinal beam, and the other end of each shock absorber is connected with the corresponding lower fork arm.
Optionally, the suspension further comprises a stabilizer bar and two suspension rods, wherein the stabilizer bar is installed on the auxiliary frame, two ends of the stabilizer bar are correspondingly connected with the upper ends of the two suspension rods, and the lower ends of the two suspension rods are correspondingly connected with the two lower fork arms.
The invention also provides an automobile, which comprises the automobile chassis.
In the technical scheme of the invention, the automobile chassis comprises a frame, an axle, a suspension and a steering mechanism, wherein the axle comprises two steering knuckles; the suspension connects the frame and the axle; the steering mechanism comprises a steering device, a steering swing arm, two steering tie rods and two steering knuckle arms, wherein the steering device is connected with the fulcrum ends of the steering swing arm, two sides of the free end of the steering swing arm are correspondingly and rotatably connected with one ends of the two steering tie rods, the other ends of the two steering tie rods are correspondingly and rotatably connected with the free ends of the two steering knuckle arms, the fulcrum ends of the two steering knuckle arms are correspondingly connected with the two steering knuckles, so that the input end of the steering device is connected to a steering wheel or a steering column to receive steering instructions of a driver, the output end of the steering device is connected with the steering knuckle arms through the steering swing arm and the steering knuckle arms to convert the received steering instructions into actual steering of wheels, the steering mechanism has bilateral symmetry, and the steering swing arm is connected with an axle through the steering tie rods and the steering knuckle arms.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an embodiment of an automobile chassis provided by the invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
FIG. 3 is a schematic perspective view of a hidden frame of the chassis of the automobile of FIG. 1;
FIG. 4 is a schematic front view of the vehicle chassis of FIG. 3;
FIG. 5 is a schematic bottom view of the vehicle chassis of FIG. 3;
fig. 6 is a schematic view of the hidden subframe and lower yoke of the vehicle chassis of fig. 5.
Reference numerals illustrate:
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
In some vehicles, especially existing heavy-duty commercial vehicles, typically employ leaf spring suspensions, with leaf springs serving as both the load carrying unit and the guide mechanism for the suspension, the axle being a one-piece axle, the left and right wheels being connected by a one-piece i-beam, the steering system employing a one-sided arrangement, the steering gear driving the tie rod, the tie rod driving one-sided wheels and driving the other-sided wheels through the tie rod, this arrangement potentially causing the following problems:
1) The steering wheel can deflect when the vehicle is empty and fully loaded;
2) The vehicle is deviated during braking;
3) When the road surface is fluctuated, a steering wheel is driven in the process of suspension bounce;
4) In the driving process, the steering ratio (the ratio of steering wheel angle to wheel angle) corresponding to the steering wheel to the left is inconsistent with the steering ratio corresponding to the steering wheel to the right, so that the steering confidence of a driver is affected.
In view of the above, the invention provides an automobile chassis and an automobile, which aim to realize symmetrical left and right steering and improve the steering performance of the automobile. Fig. 1 to 6 are embodiments of an automobile chassis provided by the present invention.
In the embodiment of the present invention, referring to the drawings, the chassis 100 includes a frame 1, an axle 2, a suspension 3, and a steering mechanism 4, where the axle 2 includes two knuckles; the suspension 3 connects the frame 1 and the axle 2; the steering mechanism 4 comprises a steering gear 41, a steering swing arm 42, two steering tie rods 43 and two knuckle arms 44, wherein the steering gear 41 is connected with the fulcrum ends of the steering swing arm 42, two sides of the free end of the steering swing arm 42 are correspondingly and rotatably connected with one ends of the two steering tie rods 43, the other ends of the two steering tie rods 43 are correspondingly connected with the free ends of the two knuckle arms 44, and the fulcrum ends of the two knuckle arms 44 are correspondingly connected with the two knuckles.
In the technical scheme of the invention, the input end 411 of the steering gear 41 is connected to a steering wheel or a steering column to receive a steering instruction of a driver, the output end of the steering gear 41 is connected to the knuckle arm 44 through the steering swing arm 42 and the steering tie rod 43, finally, the received steering instruction is converted into actual steering of wheels through the steering knuckle, the steering mechanism 4 has bilateral symmetry, and the steering swing arm 42 is connected to the axle 2 through the steering tie rod 43 and the adapter arm, so that the mechanism is simple, the friction loss is small, the symmetry of steering response is improved, the bilateral steering symmetry is realized, and the steering performance of an automobile is improved.
The specific type of the steering gear 41 is not limited in the application, the steering gear 41 can drive the steering swing arm 42 to swing, for example, the steering gear 41 is a worm crank pin type steering gear, in this embodiment, the steering gear 41 comprises a recirculating ball type steering gear 41, the recirculating ball type steering gear 41 has a simple structure, the steering is light, the steering intention of a driver can be effectively transmitted, and the steering performance of an automobile is improved. In addition, in the arrangement of the recirculating ball steering gear 41, the direction of the input shaft of the recirculating ball steering gear 41 can be arbitrarily adjusted around the pivot O of the steering swing arm, so as to be able to adapt to the input points of different steering gears and to be able to adapt to different chassis and whole vehicle arrangements.
In this embodiment, the axle 2 includes a split axle 2, where the split axle 2 can be used in combination with an independent suspension 3, and left and right wheels can jump independently without mutual influence, so that the ride comfort can be improved by 15-70% compared with a conventional leaf spring suspension.
In this embodiment, the frame 1 includes two stringers 11, and the chassis 100 further includes a subframe 5; the suspension 3 includes two double-fork arm structures 31 corresponding to two steering knuckles, each double-fork arm structure 31 includes an upper fork arm 311, a lower fork arm 312, and a support arm 313, the upper end of the support arm 313 is rotatably connected with one end of the upper fork arm 311, the other end of the upper fork arm 311 is rotatably connected with the corresponding longitudinal beam 11, the lower end of the support arm 313 is rotatably connected with one end of the lower fork arm 312, the other end of the lower fork arm 312 is rotatably connected with the subframe 5, the upper end of the support arm 313 laterally extends out of a supporting portion, the middle position of the support arm 313 laterally extends out of a connecting portion, the supporting portion is connected with the frame 1 through an elastic element 32, the connecting portion is connected with the corresponding steering knuckle through a master pin, the design rigidity of the double-fork arm is good, the problems of insufficient longitudinal torsion and transverse rigidity of a leaf spring are solved, the positioning of the wheel can be better controlled under various road conditions, and better steering stability and running smoothness can be provided.
In this embodiment, the subframe 5 includes two brackets 51, one ends of the two brackets 51 are connected to each other, the other ends of the two brackets 51 are correspondingly connected to the two stringers 11, one ends of the two brackets 51 adjacent to the stringers 11 are also connected to the mounting frame 12, the steering gear 41 is mounted on the mounting frame 12, one ends of the two brackets 51 have opposite inner sides and opposite outer sides, and the other ends of the lower fork arms 312 are rotatably mounted on the corresponding outer sides of the brackets 51, so that the mounting frame 12 and the two brackets 51 form a triangle, have greater rigidity, and greatly reduce stress strain of the frame 1 and the subframe 5.
In this embodiment, an adjusting pad 33 (see fig. 1 and 2, and fig. 1 and 2 show the adjusting pad 33 clearly) is further disposed between each lower fork arm 312 and the corresponding outer side of the bracket 51, and the related structure is shown in a disassembled state, so that the position of the lower fork arm 312 can be changed by the arrangement of the adjusting pad 33, and further the camber angle of the wheel and the camber angle of the kingpin can be adjusted, so that the two angles can be adjusted as required to achieve better running performance of the vehicle.
In this embodiment, the elastic element 32 includes an air spring 321, specifically, the upper end of the air spring 321 is connected with the frame 1 through an air bag frame, the lower end of the air spring 321 is connected with the supporting arm 313, and the supporting arm 313 is connected with the axle 2, so that the air spring 321 plays a role in bearing in the Z direction, the dead weight of the air spring 321 is lighter, the damping effect is excellent, the height can be freely adjusted, the tire loss can be reduced, and the chassis parts can be protected. More specifically, the height of the air spring 321 can be freely adjusted, so that the double-point height control scheme is facilitated to be implemented, the problem of left and right height difference of the vehicle is solved, the intelligent control of the whole vehicle height is realized, the heights of the left and right sides of the vehicle are kept consistent in the running process of the vehicle, and the stability and the comfort of the vehicle are improved.
In this embodiment, the suspension 3 further includes two shock absorbers 34, one end of each shock absorber 34 is connected to the corresponding longitudinal beam 11, and the other end is connected to the corresponding lower yoke 312, so that a very uniform suspension force distribution can be provided, vibration can be reduced, the structure of the automobile can be protected, and the running quality can be improved.
In this embodiment, the suspension 3 further includes a stabilizer bar 351 and two suspension rods 352, the stabilizer bar 351 is mounted on the subframe 5, two ends of the stabilizer bar 351 are correspondingly connected with two upper ends of the suspension rods 352, two lower ends of the suspension rods 352 are correspondingly connected with two lower fork arms 312, the stabilizer bar 351 is mounted on the subframe 5, a fixed point can be provided, the stabilizer bar 351 can effectively work, the stabilizer bar 351 is connected with the lower fork arms 312 through the suspension rods 352, the stabilizer bar 351 can effectively transmit force in the turning or driving process of the vehicle, the roll of the vehicle body is reduced, so that the posture of the vehicle body can be better controlled, and the stability and safety of the vehicle under various driving conditions are ensured.
The present invention also proposes an automobile, which includes the automobile chassis 100 according to any one of the foregoing embodiments of the automobile chassis 100, and therefore, the automobile at least has technical effects brought by all the foregoing technical solutions, which are not repeated herein.
The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather utilizing equivalent structural changes made in the present invention description and drawings or directly/indirectly applied to other related technical fields are included in the scope of the present invention.

Claims (10)

1. An automotive chassis, comprising:
A frame;
an axle comprising two knuckles;
a suspension connecting the frame and the axle; and
The steering mechanism comprises a steering device, a steering swing arm, two steering tie rods and two knuckle arms, wherein the steering device is connected with the fulcrum ends of the steering swing arm, two sides of the free ends of the steering swing arm are correspondingly and rotatably connected with one ends of the two steering tie rods, the other ends of the two steering tie rods are correspondingly connected with the free ends of the two knuckle arms, and the fulcrum ends of the two knuckle arms are correspondingly connected with the two knuckles.
2. The vehicle chassis of claim 1, wherein the diverter comprises a recirculating ball diverter.
3. The vehicle chassis of claim 1, wherein the axle comprises a disconnect axle.
4. The vehicle chassis of claim 3, wherein the frame comprises two stringers, the vehicle chassis further comprising a subframe;
the suspension comprises two double-fork arm structures corresponding to two steering knuckles, each double-fork arm structure comprises an upper fork arm, a lower fork arm and a supporting arm, the upper end of each supporting arm is rotationally connected with one end of each upper fork arm, the other end of each upper fork arm is rotationally connected with a corresponding longitudinal beam, the lower end of each supporting arm is rotationally connected with one end of each lower fork arm, the other end of each lower fork arm is rotationally connected with a subframe, a supporting part laterally extends from the upper end of each supporting arm, a connecting part laterally extends from the middle position of each supporting arm, each supporting part is connected with the corresponding frame through an elastic element, and each connecting part is connected with the corresponding steering knuckle through a master pin.
5. The vehicle chassis of claim 4, wherein the subframe includes two brackets, one ends of the two brackets being connected to each other, the other ends of the two brackets being correspondingly connected to the two stringers, one ends of the two brackets adjacent to the stringers being further connected to a mounting bracket, the diverter being mounted to the mounting bracket, one ends of the two brackets having opposite inner sides and opposite outer sides, the other ends of the lower fork arms being rotatably mounted to the corresponding outer sides of the brackets.
6. The vehicle chassis of claim 5, wherein an adjustment gasket is further disposed between each of the lower fork arms and the outer side of the corresponding bracket.
7. The vehicle chassis of claim 4, wherein the resilient element comprises an air spring.
8. The vehicle chassis of claim 4 wherein said suspension further comprises two shock absorbers, each of said shock absorbers being connected at one end to a respective one of said stringers and at the other end to a respective one of said lower fork arms.
9. The vehicle chassis of claim 4, wherein the suspension further comprises a stabilizer bar and two suspension rods, the stabilizer bar is mounted on the subframe, two ends of the stabilizer bar are correspondingly connected with the upper ends of the two suspension rods, and the lower ends of the two suspension rods are correspondingly connected with the two lower fork arms.
10. An automobile, characterized in that it comprises an automobile chassis according to any one of claims 1 to 9.
CN202410320310.5A 2024-03-20 2024-03-20 Automobile chassis and automobile Pending CN118124677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410320310.5A CN118124677A (en) 2024-03-20 2024-03-20 Automobile chassis and automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410320310.5A CN118124677A (en) 2024-03-20 2024-03-20 Automobile chassis and automobile

Publications (1)

Publication Number Publication Date
CN118124677A true CN118124677A (en) 2024-06-04

Family

ID=91246948

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410320310.5A Pending CN118124677A (en) 2024-03-20 2024-03-20 Automobile chassis and automobile

Country Status (1)

Country Link
CN (1) CN118124677A (en)

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