Energy-saving vehicle frame with adjustable front wheel parameters

Abstract

The present invention discloses an energy-saving vehicle frame with adjustable front wheel parameters, which relates to the technical field of vehicle manufacturing, and comprises a frame body, wherein both sides of the top of the frame body are fixedly connected with slide rails, a pair of the slide rails are slidably connected with bases, a pair of the bases are swingably connected with ball pins, the tops of a pair of the ball pins are fixedly connected with bottom plates, a pair of the tops of the bottom plates are fixedly connected with columns, and a pair of the columns are slidably connected with wheel mounting frames. The present invention has a reasonable structure, and can be adjusted by setting a wheelbase adjustment component, a toe adjustment component, a camber angle adjustment component, a horizontal adjustment component, a caster angle adjustment component, and a wheel ground clearance adjustment component, thereby realizing front wheel track adjustment, front wheel toe adjustment, kingpin camber angle adjustment, kingpin caster angle adjustment, and wheel ground clearance adjustment, without manual adjustment, saving time and effort, and real-time adjustment, thereby improving the vehicle performance during the driving process of the energy-saving vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle manufacturing, and in particular to an energy-saving vehicle frame with adjustable front wheel parameters. Background Art

[0002] With the rapid development of society in recent years, energy conservation and environmental protection have gradually attracted more and more attention. The sharp decrease in world oil reserves and the continuous rise in crude oil prices indicate that energy conservation is an inevitable trend in the development of contemporary automobiles.

[0003] The traditional independent front suspension for vehicles consists of an upper cantilever, a lower cantilever, and a steering knuckle. The upper and lower cantilever are connected to the vehicle body through a pin, and the steering knuckle is connected to the upper and lower cantilever through a pair of fixed ball heads. This type of suspension has a simple and strong structure and is suitable for vehicles that have been finalized and mass-produced. The disadvantage is that since the adjustment range of the geometric parameters of this suspension is quite limited or cannot be changed, the positioning parameters of the steering wheel, including the caster angle, the kingpin inclination angle, and the change of the left and right wheelbases have considerable limitations. This type of suspension generally cannot be adjusted over a large range to compensate for the errors caused by processing, assembly, etc. At the same time, according to specific driving conditions and situations, the ability to change the driving characteristics of the vehicle by adjusting these positioning parameters is also extremely limited.

[0004] At present, most of the frames are fixed structures in order to reduce the weight of the whole vehicle as much as possible, and the frame structure is not adjustable. A frame can only be used for one vehicle body. On the car frame, only a few parameters of the frame can be adjusted at most, and it is impossible to make the front wheel multi-parameter adjustable.

[0005] For example, the Chinese patent publication number CN100363193C discloses an independent front suspension system with adjustable front wheel alignment parameters, including: six rod end bearings, bushings, locking nuts, upper cantilever, lower cantilever, steering knuckle, connecting bolts and nuts, the locking nuts are arranged on the threaded rods of the rod end bearings, and the six rod end bearings and locking nuts are respectively arranged in three threaded holes at both ends of the upper cantilever and the lower cantilever. The present invention can conveniently fine-tune each front wheel alignment parameter within a relatively large parameter variation range.

[0006] However, the above-mentioned independent circle suspension system with adjustable front wheel alignment parameters still has the following disadvantages. The vehicle still needs to be lifted up in the traditional way, and the bolt positions on the sliding column and the swing arm need to be adjusted manually by using special hand-held tools to adjust the four-wheel alignment of the wheels. This adjustment method is time-consuming and labor-intensive, increases the difficulty of operation, and cannot be automatically adjusted in time according to the actual driving section of the vehicle, which reduces the driving performance of the vehicle. Therefore, the present application provides an energy-saving vehicle frame with adjustable front wheel parameters to meet the needs. Summary of the invention

[0007] The purpose of the present application is to provide an energy-saving vehicle frame with adjustable front wheel parameters. By setting a wheelbase adjustment component, a toe adjustment component, a camber adjustment component, a level adjustment component, a caster adjustment component, and a wheel ground clearance adjustment component for adjustment, the front wheel track adjustment, the front wheel toe adjustment, the kingpin camber adjustment, the kingpin caster angle adjustment, and the wheel ground clearance adjustment are achieved. No manual adjustment is required, which saves time and effort, and the adjustment is carried out in real time, thereby improving the overall vehicle performance during the driving process of the energy-saving vehicle.

[0008] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an energy-saving vehicle frame with adjustable front wheel parameters, comprising a frame body, both sides of the top of the frame body are fixedly connected with slide rails, a pair of the slide rails are slidably connected with a base, a pair of the bases are swingably connected with ball pins, the tops of a pair of the ball pins are fixedly connected with a bottom plate, the tops of a pair of the bottom plates are fixedly connected with columns, and a pair of the columns are slidably connected with a wheel mounting frame;

[0009] It also includes a wheelbase adjustment component, a toe adjustment component, a camber angle adjustment component, a level adjustment component, a caster angle adjustment component, and a wheel ground clearance adjustment component;

[0010] The wheelbase adjustment assembly is used to adjust the distance between the left and right wheels, the toe adjustment assembly is used to adjust the toe value of the left and right wheels, the camber adjustment assembly is used to adjust the camber angle of the left and right wheels, the caster adjustment assembly is used to adjust the caster angle of the left and right columns, the wheel ground clearance adjustment assembly is used to adjust the ground clearance value of the left and right gears, and the horizontal adjustment assembly makes the camber adjustment assembly in a horizontal state.

[0011] Preferably, the wheelbase adjustment assembly includes a second double-ended ball pin fixedly connected to the frame body, one end of the second double-ended ball pin is fixedly connected to a second servo motor, the output end of the second servo motor is fixedly connected to a worm, the worm is meshed with a turbine, a second double-ended screw is fixedly sleeved on the turbine, both ends of the second double-ended screw are threadedly connected to second limit fisheye bearings, and a pair of second limit fisheye bearings are respectively fixedly connected to a pair of columns.

[0012] Preferably, the second double-ended ball pin includes ball seats respectively fixedly connected to the frame body and the second servo motor, a pair of the ball seats are swingably connected with an adjusting ball head, the second servo motor is fixedly connected with a first retaining frame, and the first retaining frame is rotationally connected to the second double-ended screw.

[0013] Preferably, the toe-in adjustment assembly includes ball head assemblies respectively fixedly connected to the top of a pair of wheel mounting frames, one side of a pair of the ball head assemblies is fixedly connected to a screw rod, a pair of the screw rods are threadedly connected to the same third double-headed screw rod, the top of one of the wheel mounting frames is fixedly connected to a third servo motor, the output end of the third servo motor is fixedly connected to a first driving gear, one side of the first driving gear is meshed with a first driven gear, the first driven gear is fixedly sleeved on the third double-headed screw rod, the third servo motor is fixedly connected to a second retaining frame, and the second retaining frame is rotatably connected to the third double-headed screw rod.

[0014] Preferably, the camber angle adjustment component includes third limit fisheye bearings respectively fixedly connected to the top of a pair of the columns, a fourth double-headed screw is threadedly connected to the pair of the third limit fisheye bearings, a fifth servo motor is arranged on one side of the fourth double-headed screw, a third driving gear is fixedly connected to the output end of the fifth servo motor, a third driven gear is meshed on one side of the third driving gear, the third driven gear is fixedly sleeved on the fourth double-headed screw, a third retaining frame is fixedly connected to one side of the fifth servo motor, and the third retaining frame is rotatably connected to the fourth double-headed screw; the horizontal adjustment component includes a A fixed column on the top, the top of the fixed column is fixedly connected to a seventh servo motor, the output end of the seventh servo motor is fixedly connected to a second threaded rod, the second threaded rod is threadedly connected to a support plate, the top of the support plate is fixedly connected to a sixth servo motor, the output end of the sixth servo motor is fixedly connected to a driving gear, one side of the driving gear is meshed with a rack rod, one end of the rack rod is rotatably connected to the fourth double-headed screw, the fifth servo motor is fixedly connected to the top of the rack rod, the bottom of the rack rod is provided with a T-shaped groove, one end of the support plate is slidably connected to the T-shaped groove, and the support plate is slidably connected to the fixed column.

[0015] Preferably, the caster angle adjustment assembly includes a first double-ended ball pin fixedly connected to both sides of the bottom of the frame body, one end of a pair of the first double-ended ball pins are fixedly connected to a first servo motor, a pair of output ends of the first servo motors are fixedly connected to a first double-ended screw, both ends of the first double-ended screw are threadedly connected to a first limit fisheye bearing, and a pair of the first limit fisheye bearings are fixedly connected to the frame body and the column, respectively.

[0016] Preferably, the wheel ground height adjustment assembly includes fourth servo motors respectively fixedly connected to one side of a pair of the columns, the output ends of the pair of the fourth servo motors are fixedly connected to the second driving gear, one side of the pair of the second driving gears are meshed with a second driven gear, a pair of the second driven gears are fixedly sleeved with a first threaded rod, the wheel mounting frame is threadedly connected to the first threaded rod, a mounting plate is fixedly connected to the column, and the first threaded rod is rotatably connected to the mounting plate.

[0017] Preferably, the first position-limiting fisheye bearing, the second position-limiting fisheye bearing and the third position-limiting fisheye bearing all comprise a position-limiting fisheye bearing sleeve and an inner rotor, and the inner rotor is swingably connected in the position-limiting fisheye bearing sleeve.

[0018] In summary, the technical effects and advantages of the present invention are as follows:

[0019] 1. The invention has a reasonable structure. By setting a wheelbase adjustment component, a toe-in adjustment component, a camber angle adjustment component, a horizontal adjustment component, a caster angle adjustment component, and a wheel ground clearance adjustment component for adjustment, the front wheel track adjustment, the front wheel toe-in adjustment, the kingpin camber adjustment, the kingpin caster angle adjustment, and the wheel ground clearance adjustment are realized. Therefore, when the energy-saving vehicle is in a straight-line driving process, the kingpin inclination angle and the caster angle are adjusted to make the direction in an easy-to-reset state, thereby enhancing the directional stability. The inner and outer tire turning radius parameters are adjusted in real time according to the actual tire sliding friction coefficient, the ground reaction force, and the steering wheel torque, thereby enabling the energy-saving vehicle to turn quickly. The kingpin inclination angle is adjusted in real time according to the vehicle body state and axle load distribution to stabilize the vehicle body, thereby enabling the energy-saving vehicle to quickly return to the correct direction after turning. The left and right front wheels adjust the height of the left and right front wheels under independent control, which has little effect on the frame. The effective utilization rate of the output torque is improved, the mechanical sliding friction is reduced, and the driving stability of the energy-saving vehicle is improved as a whole. No manual adjustment is required, which saves time and effort. The real-time adjustment improves the vehicle performance during the driving process of the energy-saving vehicle.

[0020] 2. In the present invention, the first limit fisheye bearing, the second limit fisheye bearing and the third limit fisheye bearing all include a limit fisheye bearing sleeve and an inner rotor, and the inner rotor is swingably connected in the limit fisheye bearing sleeve. The advantage of this arrangement is that the limit fisheye bearing sleeve and the inner rotor do not self-rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of the frame of an energy-saving vehicle with adjustable front wheel parameters from a first-person perspective;

[0023] Figure 2 A schematic diagram of the stereoscopic structure of the energy-saving vehicle frame with adjustable front wheel parameters from a second perspective;

[0024] Figure 3 It is a schematic diagram of the enlarged three-dimensional structure of the caster angle adjustment component;

[0025] Figure 4 It is a schematic diagram of the enlarged three-dimensional structure of the wheelbase adjustment component;

[0026] Figure 5 It is an enlarged three-dimensional structural diagram of the coordination between the toe-in adjustment assembly and the wheel ground clearance adjustment assembly;

[0027] Figure 6 It is a schematic diagram of the enlarged three-dimensional structure of the camber angle adjustment component and the horizontal adjustment component;

[0028] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0029] In the figure: 1, frame body; 2, wheelbase adjustment assembly; 3, toe-in adjustment assembly; 4, camber adjustment assembly; 5, level adjustment assembly; 6, caster adjustment assembly; 7, wheel ground clearance adjustment assembly; 8, first servo motor; 9, first limit fisheye bearing; 10, first double-ended screw; 11, first double-ended ball pin; 12, base; 13, bottom plate; 14, ball pin; 15, column; 16, slide rail; 17, wheel mounting frame; 18, second servo motor; 19, second double-ended ball pin; 20, turbine; 21, worm; 22, second double-ended screw; 23, second limit fisheye bearing; 24 , the third servo motor; 25, the first driving gear; 26, the first driven gear; 27, the third double-headed screw; 28, the ball head assembly; 29, the fourth servo motor; 30, the second driving gear; 31, the second driven gear; 32, the first threaded rod; 33, the fifth servo motor; 34, the third driving gear; 35, the third driven gear; 36, the fourth double-headed screw; 37, the rack rod; 38, the sixth servo motor; 39, the driving gear; 40, the fixing column; 41, the second threaded rod; 42, the seventh servo motor; 43, the third limit fisheye bearing; 44, the limit fisheye bearing sleeve; 45, the inner rotor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example: Reference Figure 1-7 The frame of an energy-saving vehicle with adjustable front wheel parameters shown in the figure comprises a frame body 1. In the present embodiment, the frame body 1 is welded by a plurality of profiles. Both sides of the top of the frame body 1 are fixedly connected with slide rails 16, which are welded to the frame body 1. A pair of slide rails 16 are slidably connected with a base 12, a pair of bases 12 are swingably connected with ball pins 14, the tops of a pair of ball pins 14 are fixedly connected with a bottom plate 13, the tops of a pair of bottom plates 13 are fixedly connected with columns 15, a pair of columns 15 are slidably connected with a wheel mounting frame 17, and the wheel is rotatably connected to the wheel mounting frame 17. A rear wheel assembly is also mounted on the frame body 1.

[0032] It also includes a wheelbase adjustment component 2, a toe adjustment component 3, a camber angle adjustment component 4, a level adjustment component 5, a caster angle adjustment component 6, and a wheel ground clearance adjustment component 7;

[0033] The wheelbase adjustment component 2 is used to adjust the distance between the left and right wheels, the toe adjustment component 3 is used to adjust the toe value of the left and right wheels, the camber adjustment component 4 is used to adjust the camber angle of the left and right wheels, the caster adjustment component 6 is used to adjust the caster angle of the left and right columns 15, the wheel ground clearance adjustment component 7 is used to adjust the ground clearance value of the left and right gears, and the horizontal adjustment component 5 makes the camber adjustment component 4 in a horizontal state. The wheelbase adjustment component 2, the toe adjustment component 3, the camber adjustment component 4, the horizontal adjustment component 5, the caster adjustment component 6, and the wheel ground clearance adjustment component 7 are all connected to the vehicle central controller signal, and the vehicle central controller controls the wheelbase adjustment component 2, the toe adjustment component 3, the camber adjustment component 4, the horizontal adjustment component 5, the caster adjustment component 6, and the wheel ground clearance adjustment component 7 in real time according to the road conditions. The wheel ground clearance adjustment component 7 is adjusted to achieve front wheel track adjustment, front wheel toe adjustment, kingpin camber adjustment, kingpin caster adjustment and wheel ground clearance adjustment, so that when the energy-saving vehicle is in a straight-line driving process, the kingpin inclination angle and caster angle are adjusted to make the direction in an easy-to-reset state, thereby enhancing the directional stability; the inner and outer tire turning radius parameters are adjusted in real time according to the actual tire sliding friction coefficient, ground reaction force, and steering wheel torque, so that the energy-saving vehicle can turn quickly; the kingpin inclination angle is adjusted in real time according to the vehicle body state and axle load distribution. The vehicle body stability is adjusted, so that the energy-saving vehicle quickly returns to the correct direction after turning; the left and right front wheels adjust the height of the left and right front wheels under independent control, which has little effect on the frame; the effective utilization rate of the output torque is improved, the mechanical sliding friction is reduced, and the driving stability of the energy-saving vehicle is improved as a whole.

[0034] As an implementation mode in this embodiment, the wheelbase adjustment component 2 includes a second double-ended ball pin 19 fixedly connected to the frame body 1, one end of the second double-ended ball pin 19 is fixedly connected to the second servo motor 18, the output end of the second servo motor 18 is fixedly connected to the worm 21, the worm 21 is meshed with a turbine 20, the turbine 20 is fixedly sleeved with a second double-ended screw 22, both ends of the second double-ended screw 22 are threadedly connected to a second limit fisheye bearing 23, a pair of second limit fisheye bearings 23 are respectively fixedly connected to a pair of columns 15, when the wheelbase is adjusted, the output end of the second servo motor 18 rotates to drive the worm 21 to rotate, the rotation of the worm 21 drives the turbine 20 to rotate, the rotation of the turbine 20 drives the second double-ended screw 22 to rotate, the rotation of the second double-ended screw 22 drives a pair of second limit fisheye bearings 23 to move closer to or away from each other, and at the same time, the toe adjustment component 3 and the camber angle adjustment component 4 are adaptively adjusted to achieve the column 15 and the wheel mounting frame 17 to drive the two front wheels to move closer to or away from each other, so as to achieve the adjustment of the wheelbase.

[0035] In this embodiment, the second double-headed ball pin 19 includes ball seats fixedly connected to the frame body 1 and the second servo motor 18 respectively, and the ball heads of the adjustment balls are swingably connected to the pair of ball seats. The second servo motor 18 is fixedly connected to the first retaining frame, and the first retaining frame is rotatably connected to the second double-headed screw 22. The advantage of this arrangement is that when adjusting the caster angle adjustment assembly 6, the second servo motor 18, the worm 21 and the turbine 20 can move at the same time, and the worm 21 and the turbine 20 remain in a meshing state.

[0036] As an implementation method in this embodiment, the toe adjustment assembly 3 includes a ball head assembly 28 respectively fixedly connected to the top of a pair of wheel mounting frames 17, one side of the pair of ball head assemblies 28 are fixedly connected to a screw, and the pair of screws are threadedly connected to the same third double-headed screw 27, the top of one of the wheel mounting frames 17 is fixedly connected to a third servo motor 24, the output end of the third servo motor 24 is fixedly connected to a first driving gear 25, one side of the first driving gear 25 is meshed with a first driven gear 26, the first driven gear 26 is fixedly sleeved on the third double-headed screw 27, and the third servo motor 24 is fixedly connected to the output end of the third servo motor 24. The third servo motor 24 is fixedly connected with a second holder, and the second holder is rotatably connected with the third double-headed screw 27. When the toe is adjusted, the output end of the third servo motor 24 rotates to drive the first driving gear 25 to rotate, the first driving gear 25 rotates to drive the first driven gear 26 to rotate, the first driven gear 26 rotates to drive the third double-headed screw 27 to rotate, and the third double-headed screw 27 rotates to drive a pair of screws to move closer to or away from each other, thereby adjusting the toe value, eliminating the adverse consequences caused by the wheel camber, ensuring that the wheel does not roll outward, preventing the wheel from skidding and reducing the wear of the tire.

[0037] As an implementation method in this embodiment, the camber angle adjustment component 4 includes a third limit fisheye bearing 43 fixedly connected to the top of a pair of columns 15, a fourth double-headed screw 36 is threadedly connected to the pair of third limit fisheye bearings 43, a fifth servo motor 33 is arranged on one side of the fourth double-headed screw 36, the output end of the fifth servo motor 33 is fixedly connected to the third driving gear 34, one side of the third driving gear 34 is meshed with a third driven gear 35, the third driven gear 35 is fixedly sleeved on the fourth double-headed screw 36, and one side of the fifth servo motor 33 is fixedly connected to the third retaining frame The third retaining frame is rotatably connected with the fourth double-headed screw 36. When the camber angle is adjusted, the output end of the fifth servo motor 33 drives the third driving gear 34 to rotate, and the third driving gear 34 rotates to drive the third driven gear 35 to rotate, and the third driven gear 35 rotates to drive the fourth double-headed screw 36 to rotate, so that a pair of third limit fisheye bearings 43 move closer to or away from each other, and at the same time, the toe adjustment component 3 makes adaptive adjustments, thereby realizing the adjustment of the wheel camber angle, so that the dynamic load center of the wheel and the ground is reasonably distributed, thereby achieving the effects of increasing the service life of mechanical parts and reducing tire wear;

[0038] The horizontal adjustment component 5 includes a fixed column 40 fixedly connected to the top of the frame body 1, a seventh servo motor 42 is fixedly connected to the top of the fixed column 40, a second threaded rod 41 is fixedly connected to the output end of the seventh servo motor 42, a support plate is threadedly connected to the second threaded rod 41, a sixth servo motor 38 is fixedly connected to the top of the support plate, a driving gear 39 is fixedly connected to the output end of the sixth servo motor 38, a rack rod 37 is meshed on one side of the driving gear 39, one end of the rack rod 37 is rotatably connected to the fourth double-headed screw 36, a fifth servo motor 33 is fixedly connected to the top of the rack rod 37, a T-shaped slide groove is provided at the bottom of the rack rod 37, and one end of the support plate is slidably connected to the rack rod 37. In the T-shaped slide groove, the support plate is slidably connected to the fixed column 40, and the output end of the seventh servo motor 42 rotates to drive the second threaded rod 41 to rotate, and the rotation of the second threaded rod 41 drives the support plate to move up and down on the fixed column 40, and the movement of the support plate drives the sixth servo motor 38, the rack rod 37 and the fifth servo motor 33 to move up and down, and the output end of the sixth servo motor 38 rotates to drive the driving gear 39 to rotate, and the driving gear 39 rotates to drive the rack rod 37 to move on the support plate, thereby realizing horizontal adjustment of the fourth double-headed screw 36, so that the fourth double-headed screw 36 always maintains a horizontal state, avoiding the fourth double-headed screw 36 from tilting when the camber angle is adjusted, affecting the normal adjustment of the camber angle.

[0039] As an implementation method in this embodiment, the caster angle adjustment component 6 includes a first double-headed ball pin 11 fixedly connected to both sides of the bottom of the frame body 1, one end of a pair of first double-headed ball pins 11 is fixedly connected to a first servo motor 8, and by setting the first double-headed ball pin 11, the first servo motor 8 can swing at an angle, the output ends of the pair of first servo motors 8 are fixedly connected to a first double-headed screw 10, both ends of the first double-headed screw 10 are threadedly connected to a first limit fisheye bearing 9, and a pair of first limit fisheye bearings 9 are fixedly connected to the frame body 1 and the column 15, respectively. When the caster angle is adjusted, the output end of the first servo motor 8 rotates to drive the first double-headed screw 10 to rotate, and the rotation of the first double-headed screw 10 drives the first limit fisheye bearing 9 to move, and cooperates with the base 12 and the ball pin 14 to tilt the column 15, thereby realizing the adjustment of the kingpin caster angle, which is beneficial to maintaining the stability of the car's straight driving and prompting the front wheels to automatically return to the center after turning.

[0040] As an implementation method in this embodiment, the wheel ground clearance adjustment component 7 includes a fourth servo motor 29 respectively fixedly connected to one side of a pair of columns 15, the output ends of the pair of fourth servo motors 29 are fixedly connected to the second driving gear 30, one side of the pair of second driving gears 30 is meshed with a second driven gear 31, and the pair of second driven gears 31 are fixedly sleeved with a first threaded rod 32, the wheel mounting frame 17 is threadedly connected to the first threaded rod 32, and the column 15 is fixedly connected to a mounting plate, and the first threaded rod 32 is rotatably connected to the mounting plate. When the wheel ground clearance is adjusted, the output end of the fourth servo motor 29 rotates to drive the second driving gear 30 to rotate, the second driving gear 30 rotates to drive the second driven gear 31 to rotate, the second driven gear 31 rotates to rotate the first threaded rod 32, and the first threaded rod 32 rotates to drive the wheel mounting frame 17 to move, thereby realizing the adjustment of the wheel ground clearance, avoiding collision with the frame when the wheel bounces, which is beneficial to reducing the height of the whole vehicle and improving the stability of the vehicle body.

[0041] In this embodiment, the first limit fisheye bearing 9, the second limit fisheye bearing 23 and the third limit fisheye bearing 43 all include a limit fisheye bearing sleeve 44 and an inner rotor 45, and the inner rotor 45 is swingably connected in the limit fisheye bearing sleeve 44. The advantage of this arrangement is that the limit fisheye bearing sleeve 44 and the inner rotor 45 do not self-rotate.

[0042] Working principle of the present invention:

[0043] The wheelbase adjustment component 2, the toe adjustment component 3, the camber adjustment component 4, the horizontal adjustment component 5, the caster adjustment component 6, and the wheel ground clearance adjustment component 7 are all connected to the vehicle central controller by signal. The vehicle central controller controls the wheelbase adjustment component 2, the toe adjustment component 3, the camber adjustment component 4, the horizontal adjustment component 5, the caster adjustment component 6, and the wheel ground clearance adjustment component 7 in real time according to the road conditions to make adjustments. When the wheelbase is adjusted, the output end of the second servo motor 18 rotates to drive the worm 21 to rotate, the rotation of the worm 21 drives the turbine 20 to rotate, the rotation of the turbine 20 drives the second double-headed screw 22 to rotate, the rotation of the second double-headed screw 22 drives a pair of second limit fisheye bearings 23 to move closer to or away from each other, and at the same time, the toe adjustment component 3 and the camber adjustment component 4 are adaptively adjusted, so that the column 15 and the wheel mounting frame 17 drive the two front wheels to move closer to or away from each other, thereby achieving the adjustment of the wheelbase;

[0044] During toe adjustment, the output end of the third servo motor 24 rotates to drive the first driving gear 25 to rotate, the first driving gear 25 rotates to drive the first driven gear 26 to rotate, the first driven gear 26 rotates to drive the third double-headed screw 27 to rotate, the third double-headed screw 27 rotates to drive a pair of screws to move closer to or away from each other, thereby adjusting the toe value, eliminating the adverse consequences caused by wheel camber, ensuring that the wheel does not roll outward, preventing wheel side slip and reducing tire wear;

[0045] When adjusting the camber angle, the output end of the fifth servo motor 33 drives the third driving gear 34 to rotate, the rotation of the third driving gear 34 drives the third driven gear 35 to rotate, the rotation of the third driven gear 35 drives the fourth double-headed screw 36 to rotate, so that a pair of third limit fisheye bearings 43 move closer to or away from each other, and the toe adjustment component 3 makes adaptive adjustments at the same time, so as to achieve the adjustment of the wheel camber angle, so that the dynamic load center of the wheel and the ground is reasonably distributed, so as to achieve the effect of increasing the service life of mechanical parts and reducing tire wear. The output end of the seventh servo motor 42 is driven The rotation of the second threaded rod 41 drives the support plate to move up and down on the fixed column 40, and the movement of the support plate drives the sixth servo motor 38, the rack rod 37 and the fifth servo motor 33 to move up and down. The output end of the sixth servo motor 38 rotates to drive the driving gear 39 to rotate, and the driving gear 39 rotates to drive the rack rod 37 to move on the support plate, thereby realizing the horizontal adjustment of the fourth double-headed screw 36, so that the fourth double-headed screw 36 always maintains a horizontal state, avoiding the fourth double-headed screw 36 from tilting when the camber angle is adjusted, which affects the normal adjustment of the camber angle;

[0046] When adjusting the caster angle, the output end of the first servo motor 8 rotates to drive the first double-headed screw 10 to rotate, and the first double-headed screw 10 rotates to drive the first limit fisheye bearing 9 to move, and cooperates with the base 12 and the ball pin 14 to tilt the column 15, thereby achieving the adjustment of the kingpin caster angle, which is beneficial to maintaining the stability of the car's straight driving and promoting the automatic return of the front wheel after turning;

[0047] When the wheel height is adjusted, the output end of the fourth servo motor 29 rotates to drive the second driving gear 30 to rotate, the second driving gear 30 rotates to drive the second driven gear 31 to rotate, the second driven gear 31 rotates to rotate the first threaded rod 32, and the first threaded rod 32 rotates to drive the wheel mounting frame 17 to move, thereby achieving the adjustment of the wheel height, avoiding the collision of the frame when the wheel bounces, which is beneficial to reducing the height of the whole vehicle and improving the stability of the vehicle body;

[0048] The present application realizes the adjustment of the front wheel track, the front wheel toe-in, the kingpin camber, the kingpin castor and the wheel ground clearance, so that when the energy-saving vehicle is in a straight-line driving process, the kingpin inclination and the castor angle are adjusted to make the direction easy to reset, thereby enhancing the directional stability; the inner and outer tire turning radius parameters are adjusted in real time according to the actual tire sliding friction coefficient, the ground reaction force and the steering wheel torque, so that the energy-saving vehicle can turn quickly; the kingpin inclination angle is adjusted in real time according to the vehicle body state and axle load distribution, so that the energy-saving vehicle can quickly return to the correct direction after turning; the left and right front wheels are adjusted in height under independent control, which has little effect on the frame; the effective use rate of the output torque is improved, the mechanical sliding friction is reduced, and the driving stability of the energy-saving vehicle is improved as a whole.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving vehicle frame with adjustable front wheel parameters, comprising a frame body (1), characterized in that: Both sides of the top of the frame body (1) are fixedly connected with slide rails (16), a pair of the slide rails (16) are slidably connected with a base (12), a pair of the bases (12) are swingably connected with ball pins (14), the tops of the pair of ball pins (14) are fixedly connected with a bottom plate (13), the tops of the pair of bottom plates (13) are fixedly connected with upright posts (15), and a pair of the upright posts (15) are slidably connected with a wheel mounting frame (17); It also includes a wheelbase adjustment component (2), a toe adjustment component (3), a camber angle adjustment component (4), a level adjustment component (5), a caster angle adjustment component (6), and a wheel ground clearance adjustment component (7); The wheelbase adjustment assembly (2) is used to adjust the distance between the left and right wheels, the toe adjustment assembly (3) is used to adjust the toe values ​​of the left and right wheels, the camber adjustment assembly (4) is used to adjust the camber angles of the left and right wheels, the caster adjustment assembly (6) is used to adjust the caster angles of the left and right uprights (15), the wheel ground clearance adjustment assembly (7) is used to adjust the ground clearance values ​​of the left and right gears, and the horizontal adjustment assembly (5) makes the camber adjustment assembly (4) in a horizontal state; The wheelbase adjustment assembly (2) comprises a second double-ended ball pin (19) fixedly connected to the frame body (1), one end of the second double-ended ball pin (19) is fixedly connected to a second servo motor (18), an output end of the second servo motor (18) is fixedly connected to a worm (21), a turbine (20) is meshed on the worm (21), a second double-ended screw (22) is fixedly sleeved on the turbine (20), both ends of the second double-ended screw (22) are threadedly connected to a second limit fisheye bearing (23), and a pair of the second limit fisheye bearings (23) are respectively fixedly connected to a pair of the columns (15); The second double-ended ball pin (19) comprises ball seats respectively fixedly connected to the frame body (1) and the second servo motor (18), a pair of the ball seats are swingably connected to the heads of adjustment balls, the second servo motor (18) is fixedly connected to a first retaining frame, and the first retaining frame is rotationally connected to the second double-ended screw (22); The toe-in adjustment assembly (3) comprises ball head assemblies (28) respectively fixedly connected to the top of a pair of wheel mounting frames (17), one side of each of the pair of ball head assemblies (28) being fixedly connected to a screw rod, a third double-headed screw rod (27) being threadedly connected to the pair of screw rods, a third servo motor (24) being fixedly connected to the top of one of the wheel mounting frames (17), a first driving gear (25) being fixedly connected to the output end of the third servo motor (24), a first driven gear (26) being meshed with one side of the first driving gear (25), the first driven gear (26) being fixedly sleeved on the third double-headed screw rod (27), a second retaining frame being fixedly connected to the third servo motor (24), the second retaining frame being rotationally connected to the third double-headed screw rod (27); The camber angle adjustment assembly (4) comprises a third limit fisheye bearing (43) respectively fixedly connected to the top of a pair of the uprights (15); a fourth double-headed screw (36) is threadedly connected to the pair of the third limit fisheye bearings (43); a fifth servo motor (33) is arranged on one side of the fourth double-headed screw (36); an output end of the fifth servo motor (33) is fixedly connected to a third driving gear (34); a third driven gear (35) is meshed on one side of the third driving gear (34); the third driven gear (35) is fixedly sleeved on the fourth double-headed screw (36); a third retaining frame is fixedly connected to one side of the fifth servo motor (33); the third retaining frame is rotatably connected to the fourth double-headed screw (36); The horizontal adjustment component (5) comprises a fixing column (40) fixedly connected to the top of the frame body (1), the top of the fixing column (40) is fixedly connected to a seventh servo motor (42), the output end of the seventh servo motor (42) is fixedly connected to a second threaded rod (41), the second threaded rod (41) is threadedly connected to a support plate, the top of the support plate is fixedly connected to a sixth servo motor (38), the output end of the sixth servo motor (38) is fixedly connected to a driving gear (39), one side of the driving gear (39) is meshed with a rack rod (37), one end of the rack rod (37) is rotatably connected to a fourth double-headed screw rod (36), the fifth servo motor (33) is fixedly connected to the top of the rack rod (37), the bottom of the rack rod (37) is provided with a T-shaped slot, one end of the support plate is slidably connected to the T-shaped slot, and the support plate is slidably connected to the fixing column (40); The caster angle adjustment assembly (6) comprises a first double-ended ball pin (11) respectively fixedly connected to two sides of the bottom of the frame body (1), one end of a pair of the first double-ended ball pins (11) is fixedly connected to a first servo motor (8), the output ends of a pair of the first servo motors (8) are fixedly connected to a first double-ended screw (10), both ends of the first double-ended screw (10) are threadedly connected to a first limit fisheye bearing (9), and the pair of the first limit fisheye bearings (9) are respectively fixedly connected to the frame body (1) and the column (15); The wheel ground clearance adjustment assembly (7) comprises a fourth servo motor (29) respectively fixedly connected to one side of a pair of the uprights (15); the output ends of the pair of the fourth servo motors (29) are fixedly connected to a second driving gear (30); one side of the pair of the second driving gears (30) is meshed with a second driven gear (31); a first threaded rod (32) is fixedly sleeved on the pair of the second driven gears (31); the wheel mounting frame (17) is threadedly connected to the first threaded rod (32); a mounting plate is fixedly connected to the uprights (15); and the first threaded rod (32) is rotatably connected to the mounting plate.

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