CN114802429A - Vehicle steering system and new energy automobile - Google Patents
Vehicle steering system and new energy automobile Download PDFInfo
- Publication number
- CN114802429A CN114802429A CN202210390448.3A CN202210390448A CN114802429A CN 114802429 A CN114802429 A CN 114802429A CN 202210390448 A CN202210390448 A CN 202210390448A CN 114802429 A CN114802429 A CN 114802429A
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- CN
- China
- Prior art keywords
- assembly
- steering system
- rod
- vehicle steering
- driving
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D15/00—Steering not otherwise provided for
- B62D15/02—Steering position indicators ; Steering position determination; Steering aids
- B62D15/021—Determination of steering angle
- B62D15/0225—Determination of steering angle by measuring on a steering gear element, e.g. on a rack bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
- B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
- B62D5/046—Controlling the motor
- B62D5/0466—Controlling the motor for returning the steering wheel to neutral position
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
Abstract
The invention discloses a vehicle steering system and a new energy automobile, wherein the vehicle steering system comprises two parts, namely a direction control end and a steering structure end, the steering structure end comprises two driving front wheels which are symmetrically distributed, and a front driving cross rod is arranged at the middle position of the two driving front wheels, one side of the front driving cross rod is provided with an assembly hydraulic cylinder, the two assembly hydraulic cylinders are symmetrically distributed and fixed on an automobile chassis along the central plane of the two driving front wheels in a mirror image manner, the output ends of the two assembly hydraulic cylinders are fixedly provided with assembly transverse pull rods, the tail ends of the two assembly transverse pull rods are hinged with the two driving front wheels, the direction control end comprises a direction transmission rod and a torque sensor, and the direction transmission rod is fixedly connected with an output shaft on the torque sensor. In the using process, the invention reduces the influence of mechanical abrasion on steering and can regularly correct the steering system.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a vehicle steering system and a new energy automobile.
Background
A series of devices for changing or maintaining the driving or reversing direction of a vehicle is called a steering system (steering system), and the steering system functions to control the driving direction of the vehicle as intended by a driver. The steering system of an automobile is important to the driving safety of the automobile, so parts of the steering system of the automobile are called safety parts. The automobile steering system and the automobile braking system are two systems which must be considered as important for automobile safety.
On new energy vehicles or fuel vehicles, the power source of an automobile steering system is mainly determined by manpower, and consists of three parts, namely a direction operating mechanism (a steering wheel), a steering gear and a steering transmission system, and an electric power-assisted or hydraulic power-assisted mode is used as an auxiliary mode, so that the rotating force of the steering wheel is converted into a transverse linear movement mode in the steering process.
In the process of electric power assistance or hydraulic power assistance, mechanical abrasion exists between transmission gears and between a universal joint between a steering column and a transmission shaft and a steering gear when the transmission gears in the steering system run, and the driving direction of an automobile can have larger errors due to slight deviation of a transverse pull rod in the steering system in the displacement process.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a vehicle steering system and a new energy automobile.
In order to achieve the purpose, the invention adopts the following technical scheme:
a vehicle steering system comprises a direction control end and a steering structure end, wherein the steering structure end comprises two driving front wheels which are symmetrically distributed, and a front driving cross rod is arranged at the middle position of the two driving front wheels;
the direction control end is composed of a direction transmission rod and a torque sensor, the direction transmission rod is fixedly connected with an output shaft of the torque sensor, and the direction control end is not connected with the steering structure end in a mechanical structure.
Through the arrangement, the whole steering system consists of the direction control end and the steering structure end, and the direction control end is not connected with the steering structure end through any mechanical structure, so that a driver can apply smaller force on the torque sensor without mechanical abrasion caused by a plurality of elements such as a movable rod, a universal joint and the like in the moving process;
in addition, in the steering process of the automobile, the two assembly hydraulic cylinders are symmetrically arranged, and the driving mode that a current motor drives a gear is abandoned, so that the influence of mechanical abrasion on the whole device is reduced.
The steering mechanism is characterized in that a driving gear disc is fixedly mounted at the tail end of the direction transmission rod, a stepping motor is arranged at one side of the torque sensor, an assisting gear disc is fixedly mounted on an output shaft of the stepping motor, and the assisting gear disc is meshed with the driving gear disc.
Through the arrangement, in the driving process, a driver rotates the direction transmission rod, senses the rotating angle of the driver in the steering process through the torque sensor, converts the rotating angle into an electric signal and sends the electric signal to the use terminal machine;
in the flameout process of the automobile, the stepping motor is started to drive the auxiliary gear disc to rotate at a constant speed, and the stepping motor drives the direction transmission rod to rotate in a certain direction and at a certain angle under the meshing action of the driving gear disc and the auxiliary gear disc, so that the steering wheel is driven to return to the right position.
The assembly hydraulic cylinder is characterized in that displacement sensors are fixedly mounted at the upper end positions of the two assembly hydraulic cylinders, displacement transmission rods are fixedly mounted on output shafts of the displacement sensors, positioning connecting rods are arranged at the tail end positions of the displacement transmission rods, and the two positioning connecting rods are mounted on the transverse pull rod of the assembly.
Through the arrangement, in the starting process of the two assembly hydraulic cylinders, the two transverse pull rods carry out linear-direction movable silica gel, the displacement transmission rod is installed on the assembly transverse pull rod through the positioning connecting rod, and the displacement forming and the displacement direction of the assembly transverse pull rod are sensed in real time through the displacement sensor.
The assembly hydraulic cylinder is characterized in that a dust cover is arranged on the assembly transverse pull rod, one end of the dust cover is arranged on the assembly hydraulic cylinder, and the other end of the dust cover is arranged on the assembly transverse pull rod.
Through the arrangement, the assembly hydraulic cylinder is possibly influenced by external dust during operation, so that the dust cover is additionally arranged to avoid the influence of the dust on the assembly hydraulic cylinder.
The device is characterized in that a mounting plate is fixedly mounted at the tail end of each displacement transmission rod, a buffering force unloading plate is arranged at the lower end of each mounting plate, and the middle position of each buffering force unloading plate is rotatably connected with the lower surface of each mounting plate.
Through the arrangement, the whole automobile jolts at different degrees in the high-speed running process, the up-and-down fluctuation of the positioning connecting rod can influence the normal use process of the displacement transmission rod in the jolting process, so that the connection mode between the mounting plate and the buffering and force unloading plate is limited, and the impact force generated in the jolting process is buffered in the mode of the left-and-right up-and-down fluctuation.
Further set up as, the equal fixed mounting in buffering unload power board upper surface both ends position has first buffer spring, two first buffer spring upper end is installed on the lower surface position of mounting panel.
Through the arrangement, the impact force in the reciprocating motion process is offset and absorbed by the first buffer spring at the corresponding position in the process of the fluctuation motion of the buffering and force-unloading plate in the left, right and up and down directions.
Further set up as, buffering power of unloading board lower surface central point puts fixed mounting with the ball cover, the welding of location connecting rod upper end position has the spin, sliding connection between spin and the ball cover.
Through the arrangement, the buffering force unloading plate is connected with the positioning connecting rod through the ball sleeve and the rolling ball, so that the buffering force at multiple angles can be met.
Further set up as, two equal fixed mounting in assembly pneumatic cylinder upper end has the backup pad, two fixed mounting has the assembly slide bar between the backup pad upper end position, slidable mounting has the assembly sliding block on the assembly slide bar, fixed mounting has the connecting curved bar between assembly sliding block and the mounting panel.
Through the arrangement, the two assembly transverse pull rods move in the same direction in the steering process of the front driving wheel, so that the assembly sliding block only moves in one direction in the process that the automobile rotates in one direction, the two connecting curved rods are connected with the assembly sliding block and the mounting plate, and the two displacement transmission rods are integrated into a relatively complete structure.
The assembly sliding rod is further provided with second buffer springs on the circumferential outer walls at the two ends of the assembly sliding block;
the cross sections of the two connecting curved rods are in an upward arch shape.
Through the arrangement, in the moving process of the assembly sliding block, the second buffer spring in one direction position is used for counteracting the impact force generated by the assembly sliding block in the sharp turning process, so that the protection effect is achieved between the support plates;
in addition, the shapes of the two connecting curved rods are limited, so that the connecting curved rods are in an upward bent arch shape, and the connecting curved rods can bear more impact force.
The new energy automobile includes the vehicle steering system according to claims 1 to 9.
The invention provides a vehicle steering system and a new energy automobile, which have the beneficial effects that: in the use process of the scheme, the whole steering system consists of a direction control end and a steering structure end, the direction control end is not connected with the steering structure end through any mechanical structure, so that a driver can apply a smaller force on the torque sensor without mechanical abrasion caused by a plurality of elements such as a movable rod, a universal joint and the like in the moving process;
in addition, in the steering process of the automobile, the two assembly hydraulic cylinders are symmetrically arranged, and the driving mode that a current motor drives a gear is abandoned, so that the influence of mechanical abrasion on the whole device is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle steering system and a new energy vehicle according to the present invention;
fig. 2 is a schematic structural diagram of a vehicle steering system and a directional control end part of a new energy vehicle according to the present invention;
fig. 3 is a schematic structural diagram of a vehicle steering system and a steering structure end part of a new energy automobile according to the present invention;
FIG. 4 is a schematic structural diagram of an assembly hydraulic cylinder component of a vehicle steering system and a new energy vehicle according to the present invention;
FIG. 5 is a schematic structural diagram of a driving manner in the hydraulic cylinder part in FIG. 4 of a vehicle steering system and a new energy automobile according to the present invention;
fig. 6 is a schematic structural diagram of a vehicle steering system and a mounting plate component of a new energy vehicle according to the present invention.
In the figure: 1. driving the front wheel; 2. a front drive rail; 3. assembling a transverse pull rod; 4. a direction transmission rod; 5. a torque sensor; 6. an assembly hydraulic cylinder; 7. a dust cover; 8. a cooperating toothed disc; 9. a stepping motor; 10. a driving gear plate; 11. a support plate; 12. mounting a plate; 13. connecting a curved bar; 14. an assembly slider; 15. a first buffer spring; 16. a buffer force-unloading plate; 17. positioning the connecting rod; 18. a displacement transmission rod; 19. a second buffer spring; 20. rolling a ball; 21. a displacement sensor; 22. an assembly slide bar; 23. and (4) covering the ball.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-6, a vehicle steering system comprises two major parts, namely a direction control end and a steering structure end, wherein the steering structure end comprises two driving front wheels 1 which are symmetrically distributed, and a front driving cross rod 2 is arranged in the middle of the two driving front wheels 1, an assembly hydraulic cylinder 6 is arranged on one side of the front driving cross rod 2, the two assembly hydraulic cylinders 6 are fixed on an automobile chassis in a mirror symmetry manner along the central plane of the two driving front wheels 1, an assembly transverse pull rod 3 is fixedly arranged at the output end position of the two assembly hydraulic cylinders 6, and the tail ends of the two assembly transverse pull rods 3 are hinged with the two driving front wheels 1;
the direction control end is composed of a direction transmission rod 4 and a torque sensor 5, the direction transmission rod 4 is fixedly connected with an output shaft of the torque sensor 5, and the direction control end and the steering structure end are not connected through a mechanical structure.
The steering drive device is characterized in that a driving gear disc 10 is fixedly mounted at the tail end of the direction transmission rod 4, a stepping motor 9 is arranged at one side of the torque sensor 5, an assisting gear disc 8 is fixedly mounted on an output shaft of the stepping motor 9, and the assisting gear disc 8 is meshed with the driving gear disc 10.
The upper end positions of the two assembly hydraulic cylinders 6 are fixedly provided with displacement sensors 21, the output shafts of the displacement sensors 21 are fixedly provided with displacement transmission rods 18, the tail end positions of the displacement transmission rods 18 are provided with positioning connecting rods 17, the two positioning connecting rods 17 are arranged on an assembly transverse pull rod 3, the assembly transverse pull rod 3 is provided with a dust cover 7, one end of the dust cover 7 is arranged on the assembly hydraulic cylinder 6, the other end of the dust cover 7 is arranged on the assembly transverse pull rod 3, the tail end position of each displacement transmission rod 18 is fixedly provided with a mounting plate 12, the lower end of the mounting plate 12 is provided with a buffering unloading plate 16, the middle position of the buffering unloading plate 16 is rotatably connected with the lower surface of the mounting plate 12, the two end positions of the upper surface of the buffering unloading plate 16 are fixedly provided with first buffering springs 15, and the upper ends of the two first buffering springs 15 are arranged on the lower surface of the mounting plate 12, a ball sleeve 23 is fixedly installed at the center of the lower surface of the buffering and force-unloading plate 16, a rolling ball 20 is welded at the upper end of the positioning connecting rod 17, the rolling ball 20 is connected with the ball sleeve 23 in a sliding manner, supporting plates 11 are fixedly installed at the upper ends of the two assembly hydraulic cylinders 6, an assembly sliding rod 22 is fixedly installed between the upper ends of the two supporting plates 11, an assembly sliding block 14 is installed on the assembly sliding rod 22 in a sliding manner, a connecting curved rod 13 is fixedly installed between the assembly sliding block 14 and the mounting plate 12, and second buffering springs 19 are arranged on the circumferential outer walls of the assembly sliding rod 22 at the two ends of the assembly sliding block 14;
the cross section of each of the two connecting curved bars 13 is in an upward arch shape.
The new energy automobile includes the vehicle steering system according to claims 1 to 9.
The use principle and the advantages are as follows: in the using process of the invention, the parts are installed on the new energy automobile, the steering system in the new energy automobile consists of two parts, namely a direction control end and a steering structure end, and the following are required to be shown: the direction control end and the steering structure end are connected in a mechanical structure without mounting parts such as universal joints, transmission rods and the like;
in the installation process, the equal stroke quantity of the two assembly hydraulic cylinders 6 is ensured, and the two assembly hydraulic cylinders 6 are arranged and just distributed in mirror symmetry along the middle plane of the two front driving wheels 1;
in the running process of the new energy automobile, a driver controls a steering wheel to rotate for a certain angle in a certain direction, force on the steering wheel is transmitted to a torque sensor 5 through a direction transmission rod 4, the force is converted into an electric signal, the electric signal is transmitted to a center console on the new energy automobile, and the electric signal is used as the operation basis of two assembly hydraulic cylinders 6, for example, when the new energy automobile turns to the left, two assembly transverse pull rods 7 pull two front driving wheels 1 to deflect to the left under the action of the assembly hydraulic cylinders 6, and steering action is achieved;
in the process of displacing the assembly transverse pull rod 3, the displacement transmission rod 18 at the corresponding position moves along with the assembly transverse pull rod 3, and the displacement sensor 21 receives the equivalent displacement change of the displacement transmission rod 18, because the two displacement sensors 21 are distributed in a mirror image mode, the displacement sensor 21 at the corresponding position can directly receive and feed back the movement stroke amount of the assembly hydraulic cylinder 6;
in the process, because the bumping feeling generated in the running process of the automobile can directly influence the influence of the positioning connecting rod 17 on the displacement transmission rod 18, the buffering and force-unloading plate 16 is additionally arranged between the positioning connecting rod 17 and the mounting plate 12, and because the rolling ball 20 and the ball sleeve 23 are arranged between the buffering and force-unloading plate 16 and the positioning connecting rod 17, the buffering and force-unloading plate 16 can meet the impact force in multiple directions and can reciprocate up and down at the central position of the mounting plate 12 to buffer the impact force and protect the displacement transmission rod 18;
in the process of transverse movement of the displacement transmission rod 18, the two mounting plates 12 and the assembly sliding block 14 are integrated into a whole by the connecting curved rod 13, and impact force generated in the process of sharp rotation is buffered by the second buffer spring 19 again;
during driving, the stroke amounts of the assembly hydraulic cylinders 6 at the two positions are fed back through the displacement sensors 21 at the two positions, and the difference between the two stroke amounts is fed back to the torque sensor 5, so that the difference between the stroke amounts is also included in the subsequent steering process to ensure the steering temperature, and after flameout, the two assembly hydraulic cylinders 6 are recalibrated on the basis of the difference between the electric signal of the torque sensor 5 and the stroke amount, the stepping motor 9 is started, and the driving gear plate 10 is driven to rotate through the auxiliary gear plate 8 to recalibrate the steering wheel on the steering transmission rod 4.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The vehicle steering system is characterized by comprising a direction control end and a steering structure end, wherein the steering structure end comprises two driving front wheels (1) which are symmetrically distributed, a front driving cross rod (2) is arranged in the middle of the two driving front wheels (1), an assembly hydraulic cylinder (6) is arranged on one side of the front driving cross rod (2), the two assembly hydraulic cylinders (6) are fixed on an automobile chassis in a mirror symmetry mode along the central plane of the two driving front wheels (1), an assembly transverse pull rod (3) is fixedly installed at the output end position of the two assembly hydraulic cylinders (6), and the tail ends of the two assembly transverse pull rods (3) are hinged with the two driving front wheels (1);
the direction control end is composed of a direction transmission rod (4) and a torque sensor (5), the direction transmission rod (4) is fixedly connected with an output shaft of the torque sensor (5), and the direction control end is not connected with a steering structure end in a mechanical structure.
2. The vehicle steering system according to claim 1, wherein a driving gear plate (10) is fixedly mounted at the end position of the direction transmission rod (4), a stepping motor (9) is arranged at one side position of the torque sensor (5), an auxiliary gear plate (8) is fixedly mounted on an output shaft of the stepping motor (9), and the auxiliary gear plate (8) is meshed with the driving gear plate (10).
3. The vehicle steering system according to claim 1, wherein a displacement sensor (21) is fixedly mounted at the upper end of each of the two assembly hydraulic cylinders (6), a displacement transmission rod (18) is fixedly mounted on an output shaft of the displacement sensor (21), a positioning connecting rod (17) is arranged at the tail end of the displacement transmission rod (18), and the two positioning connecting rods (17) are mounted on the assembly transverse pull rod (3).
4. A vehicle steering system according to claim 1, characterized in that a dust cover (7) is provided on the assembly cross tie (3), said dust cover (7) being mounted at one end on the assembly hydraulic cylinder (6) and at the other end on the assembly cross tie (3) said dust cover (7).
5. A vehicle steering system according to claim 3, wherein a mounting plate (12) is fixedly mounted at the end position of each displacement transmission rod (18), a buffering force-unloading plate (16) is arranged at the lower end of the mounting plate (12), and the middle position of the buffering force-unloading plate (16) is rotatably connected with the lower surface of the mounting plate (12).
6. A vehicle steering system according to claim 5, wherein the first buffer springs (15) are fixedly mounted at both end positions on the upper surface of the buffer unloading plate (16), and the upper ends of the two first buffer springs (15) are mounted on the lower surface of the mounting plate (12).
7. The vehicle steering system according to claim 5, wherein a ball sleeve (23) is fixedly mounted at the center of the lower surface of the buffering force unloading plate (16), a rolling ball (20) is welded at the upper end of the positioning connecting rod (17), and the rolling ball (20) is slidably connected with the ball sleeve (23).
8. A vehicle steering system according to claim 1, wherein a support plate (11) is fixedly mounted at the upper end of each of the two assembly hydraulic cylinders (6), an assembly sliding rod (22) is fixedly mounted between the upper end positions of the two support plates (11), an assembly sliding block (14) is slidably mounted on the assembly sliding rod (22), and a connecting curved rod (13) is fixedly mounted between the assembly sliding block (14) and the mounting plate (12).
9. A vehicle steering system according to claim 8, wherein the assembly slide rod (22) is provided with second buffer springs (19) on the outer circumferential wall at both ends of the assembly slide block (14);
the cross sections of the two connecting curved rods (13) are in an upward arch shape.
10. The new energy automobile according to claim 1-9, characterized in that the new energy automobile comprises the vehicle steering system according to claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390448.3A CN114802429A (en) | 2022-04-14 | 2022-04-14 | Vehicle steering system and new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210390448.3A CN114802429A (en) | 2022-04-14 | 2022-04-14 | Vehicle steering system and new energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114802429A true CN114802429A (en) | 2022-07-29 |
Family
ID=82536744
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210390448.3A Withdrawn CN114802429A (en) | 2022-04-14 | 2022-04-14 | Vehicle steering system and new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114802429A (en) |
-
2022
- 2022-04-14 CN CN202210390448.3A patent/CN114802429A/en not_active Withdrawn
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
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Application publication date: 20220729 |