CN210416719U - Vehicle steering system - Google Patents
Vehicle steering system Download PDFInfo
- Publication number
- CN210416719U CN210416719U CN201921483600.2U CN201921483600U CN210416719U CN 210416719 U CN210416719 U CN 210416719U CN 201921483600 U CN201921483600 U CN 201921483600U CN 210416719 U CN210416719 U CN 210416719U
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- Prior art keywords
- shaft
- rack
- gear
- quick
- connecting piece
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Abstract
The utility model discloses a vehicle steering system, utilize the frame joint pipe to be connected with the vehicle frame, realize steering control mechanism's fixed connection, adopt the gear transmission case design of gear and rack meshing structure, realize through the meshing of gear shaft and rack shaft that the gear shaft rotates and becomes rack shaft and move about, torque transmission ratio is little, it is light to turn to, steering system angular drive ratio is moderate, connect through the jackshaft between gear shaft and the steering wheel, the jackshaft both ends adopt the universal joint to connect, make whole steering system mild, when the tire is run out in parallel, toe angle variation interval is little; the utility model discloses to the tire condition of turning to of beating obtain obvious suppression, the toe-in angle variation is less before the wheel, has reduced tire wear, has improved vehicle operating stability. The utility model can improve the bending sensitivity while ensuring the turning portability and the design of the hard point coordinate, and has both the turning sensitivity and the portability; the device has the advantages of light weight, simple structure, convenient assembly and disassembly, reliable performance and good practicability.
Description
Technical Field
The utility model belongs to the vehicle control field, concretely relates to vehicle steering system.
Background
The steering mechanism has a great influence on the steering performance, the steering stability, the driving smoothness and the like of the automobile. The driver operates the steering system most in the driving process, the design quality of the system directly influences the steering performance of the racing car, and reflects the turning performance of the driver, whether the head pushing or tail flicking phenomenon exists or not, and the road feel, so that the design of the steering system of the FSAE racing car is particularly important in view of the requirements of the FSAE racing car on speed and steering stability. The main tasks of the racing car steering system are two, namely ensuring that all wheels rotate around the same instantaneous steering center in the steering process of the car so as to avoid or reduce wheel sideslip, and exerting the lateral force of the tire to the maximum extent on the premise of considering the tire data so as to improve the over-bending response and speed. At present, many people have studied on the aspect of the optimization design of the steering mechanism.
There are several problems with current racing car steering systems: the structure is complex, the steering is heavy when the vehicle runs at low speed, and the vehicle pushes the head when the vehicle runs at high speed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vehicle steering system to overcome prior art's not enough.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a vehicle steering system comprises a steering control mechanism and a steering transmission mechanism;
the steering control mechanism comprises a steering wheel, a steering wheel quick-release device, a quick-release connecting piece and a frame connecting pipe; the quick-release connecting piece comprises a quick-release connecting shaft, a frame connecting piece upper cover plate and a frame connecting piece lower cover plate; one end of a frame connecting pipe is fixed on a frame, the other end of the frame connecting pipe is fixedly connected with an upper cover plate of a frame connecting piece, the upper cover plate of the frame connecting piece and a lower cover plate of the frame connecting piece are connected through a bolt to form a quick-release connecting shaft hole, and a quick-release connecting shaft is arranged in the quick-release connecting shaft hole; one end of the quick-release connecting shaft is connected to a steering wheel through a steering wheel quick-release device, and the other end of the quick-release connecting shaft is connected with a first universal joint;
the steering transmission mechanism comprises a supporting seat, a gear transmission case and a steering tie rod, the gear transmission case comprises a gear shell, a gear hole and a rack hole are formed in the gear shell, the axes of the gear hole and the rack hole are vertically arranged, a gear shaft is arranged in the gear hole, a rack shaft is arranged in the rack hole, a rack is arranged on the rack shaft, a gear meshed with the rack is arranged on the gear shaft, and two ends of the rack shaft are respectively connected with the steering tie rod; the end part of the tie rod is connected with a steering wheel through a rod end bearing and a thread bush; one end of the gear shaft is connected with a second universal joint through a gear input shaft, and the second universal joint is connected with the first universal joint through an intermediate shaft.
Furthermore, two ends of the intermediate shaft are respectively connected to the second universal joint and the first universal joint through intermediate shaft connecting pieces, threaded holes are formed in two ends of the intermediate shaft, one end of each intermediate shaft connecting piece is connected with the intermediate shaft through threads, and the other end of each intermediate shaft connecting piece is respectively connected to the second universal joint and the first universal joint through a stop bolt; the intermediate shaft is provided with a thread locking screw for locking the intermediate shaft and the intermediate shaft connecting piece.
Furthermore, a limiting boss for preventing the quick-release connecting shaft from axially sliding is arranged in a quick-release connecting shaft hole between the upper cover plate of the frame connecting piece and the lower cover plate of the frame connecting piece.
Furthermore, two ends of a rack hole of the gear shell are respectively provided with a rack transmission box, the rack transmission box comprises a rack shell, and the rack shell is connected with the gear shell through a bolt; the rack shaft is arranged in the rack shell, and a linear bearing which is matched with the rack shaft to slide is arranged in the rack shell.
Further, the supporting seat comprises a supporting base and a U-shaped clamping cover, the rack shell is fixed on the supporting base through the U-shaped clamping cover, a limit stop block is arranged on the supporting base, a limit block is arranged on the rack shaft, the limit block comprises two lug pieces fixed on the rack shaft through bolts, and the positions of the two lug pieces on the rack shaft are adjustable.
Furthermore, a pressing block is arranged in a rack hole of the gear shell, a pressing nut used for applying pressure to the pressing block is arranged on the gear shell, and the pressing nut is in threaded connection with the gear shell.
Furthermore, one side of the pressing block is provided with a cambered surface which is matched with the rack shaft to slide, and a pressing spring is arranged between the pressing block and the pressing nut.
Furthermore, a bearing is sleeved on the quick-release connecting shaft, and a deep groove ball bearing is sleeved on the gear shaft.
Furthermore, the second universal joint and the first universal joint are both cross-axle universal joints, and the deflection angle of the single-joint universal joint is 37 degrees.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model relates to a vehicle steering system, utilize the frame joint pipe to be connected with the vehicle frame, realize steering control mechanism's fixed connection, adopt the gear transmission case design of gear and rack meshing structure, realize through the meshing of gear shaft and rack shaft that the gear shaft rotates and becomes rack shaft and move about, torque transmission ratio is little, it is light to turn to, adopt rack and pinion meshing transmission, steering system angular transmission ratio is moderate, connect through the jackshaft between gear shaft and the steering wheel, the jackshaft both ends adopt the universal joint to connect, make whole steering system mild, when the tire is run out in parallel, toe angle variation interval is little; the utility model discloses to the tire condition of turning to of beating obtain obvious suppression, the toe-in angle variation is less before the wheel, has reduced tire wear, has improved vehicle operating stability. The utility model can improve the bending sensitivity while ensuring the turning portability and the design of the hard point coordinate, and has both the turning sensitivity and the portability; the device has the advantages of light weight, simple structure, convenient assembly and disassembly, reliable performance and good practicability.
Furthermore, a position-adjustable limiting structure is adopted, so that the displacement of the tie rod can be adjusted, and the reverse rotation of the four-bar mechanism can be prevented.
Furthermore, a pressing block is arranged in a rack hole of the gear shell, a pressing nut used for applying pressure to the pressing block is arranged on the gear shell, the pressing nut is in threaded connection with the gear shell, an arc surface matched with the rack shaft to slide is arranged on one side of the pressing block, a pressing spring is arranged between the pressing block and the pressing nut, and the meshing stability of the gear and the rack can be ensured by utilizing the elastic force of the spring.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the quick release connector of the present invention;
FIG. 3 is a schematic view of the gear box of the present invention;
FIG. 4 is a schematic view of the explosion structure of the gear transmission case of the present invention;
fig. 5 is a schematic structural view of the rack gear box of the present invention;
FIG. 6 is a schematic view of the supporting seat mounting structure of the present invention;
FIG. 7 is a schematic structural view of a tie rod of the present invention;
FIG. 8 is a schematic view of the universal joint connection structure of the present invention;
fig. 9 is a schematic view of the overall installation structure of the present invention.
Wherein: 1. steering wheel, 2, steering wheel quick detach ware, 3, quick detach connecting piece, 4, the vehicle frame connecting pipe, 5, the universal joint, 6, the intermediate shaft connecting piece, 7, the gear shaft, 8, the rack gear case, 9, the jackshaft, 10, the gear transmission case, 11, the supporting seat, 12, limit stop, 13, the tie rod, 14, deep groove ball bearing, 15, the gear input shaft, 16, the rack shaft, 101, the gear housing, 102, the briquetting, 103, gland nut, 301, quick detach connecting axle, 302, vehicle frame connecting piece upper cover plate, 303, vehicle frame connecting piece lower cover plate, 801, the rack housing, 802, linear bearing, 1301, the rod end bearing, 1302, the thread bush.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1 to 9, a vehicle steering system includes a steering operation mechanism and a steering transmission mechanism;
the steering control mechanism comprises a steering wheel 1, a steering wheel quick-release device 2, a quick-release connecting piece 3 and a frame connecting pipe 4; the quick-release connecting piece 3 comprises a quick-release connecting shaft 301, a frame connecting piece upper cover plate 302 and a frame connecting piece lower cover plate 303; one end of a frame connecting pipe 4 is fixed on a frame, the other end of the frame connecting pipe 4 is fixedly connected with an upper cover plate 302 of a frame connecting piece, the upper cover plate 302 of the frame connecting piece and a lower cover plate 303 of the frame connecting piece are connected through a bolt to form a quick-release connecting shaft hole, a quick-release connecting shaft 301 is arranged in the quick-release connecting shaft hole, and a bearing is sleeved on the quick-release connecting shaft 301; one end of the quick-release connecting shaft 301 is connected to the steering wheel 1 through a steering wheel quick-release device 2, and the other end of the quick-release connecting shaft 301 is connected with a first universal joint 5;
the steering transmission mechanism comprises a supporting seat 11, a gear transmission case 10 and a steering tie rod 13, the gear transmission case comprises a gear shell 101, a gear hole and a rack hole are formed in the gear shell 101, the axes of the gear hole and the rack hole are vertically arranged, a gear shaft 7 is arranged in the gear hole, a rack shaft 16 is arranged in the rack hole, a rack is arranged on the rack shaft 16, a gear meshed with the rack is arranged on the gear shaft 7, and two ends of the rack shaft 16 are respectively connected with the steering tie rod 13; the tie rod 13 is mounted on the frame through a support base 11, and the end of the tie rod 13 is connected to the steering wheel through a rod end bearing 1301 and a threaded sleeve 1302; one end of the gear shaft 7 is connected with a second universal joint through a gear input shaft 15, and the second universal joint is connected with the first universal joint 5 through an intermediate shaft 9; the gear shaft 7 is sleeved with a deep groove ball bearing 14;
two ends of an intermediate shaft 9 are respectively connected to the second universal joint and the first universal joint 5 through intermediate shaft connecting pieces 6, threaded holes are formed in two ends of the intermediate shaft, one end of each intermediate shaft connecting piece 6 is connected with the intermediate shaft through threads, and the other end of each intermediate shaft connecting piece 6 is respectively connected to the second universal joint and the first universal joint 5 through a stop bolt; the intermediate shaft 9 is provided with a thread locking screw for locking the intermediate shaft 9 and the intermediate shaft connecting piece 6;
a limiting boss is arranged in a quick-release connecting shaft hole between the frame connecting piece upper cover plate 302 and the frame connecting piece lower cover plate 303, so that the quick-release connecting shaft 301 is prevented from axially sliding;
two ends of a rack hole of the gear shell 101 are respectively provided with a rack transmission box 8, each rack transmission box comprises a rack shell 801, and the rack shells 801 are connected with the gear shell 101 through bolts; the rack shaft 16 is arranged in a rack shell 801, and a linear bearing 802 which is matched with the rack shaft 16 to slide is arranged in the rack shell 801;
the supporting seat 11 is including supporting base and U type card lid, rack housing 801 is fixed in on supporting the base through U type card lid, be equipped with limit stop 12 on the support base, be equipped with the stopper on the rack axle 16, the stopper includes two auricles of bolt fastening on the rack axle 16, two auricles are adjustable in the position on the rack axle 16, when adjusting the vehicle turning radius, only need loosen the bolt, alright in order to realize the stopper at the epaxial axial displacement of rack, treat to screw up the bolt once more after confirming suitable position, both can realize the regulation of tie rod displacement and can prevent four-bar mechanism's reversal.
A pressing block 102 is arranged in a rack hole of the gear shell 101, a pressing nut 103 for pressing the pressing block 102 is arranged on the gear shell 101, and the pressing nut 103 is in threaded connection with the gear shell 101; one side of the pressing block 102 is provided with an arc surface which is matched with the rack shaft 16 to slide, and a pressing spring is arranged between the pressing block 102 and the pressing nut 103; the adjustment of the pressing force of the pressing spring can be realized by rotating the adjusting nut, and the pressing spring presses the rack shaft 16 through the pressing block to eliminate the clearance between the rack and the pinion.
The second universal joint and the first universal joint 5 both adopt a cross-axle universal joint, and the deflection angle of the single-joint universal joint is 37 degrees.
For racing vehicles, the elasticity and the ground contact area of tires are large, the running speed is high, the load is obviously laterally transferred during overbending, and the slip angle of the tires cannot be ignored during steering, so that the instant center of rotation during actual steering is not on the extension line of a rear axle but deviates a certain distance towards the traveling direction of the vehicle. Therefore, the vehicle steering system is connected with a vehicle frame through a frame connecting pipe to realize the fixed connection of a steering control mechanism, the design of a gear transmission box with a gear and rack meshing structure is adopted, the rotation of a gear shaft is changed into the left and right movement of a rack shaft through the meshing of the gear shaft and the rack shaft, the torque transmission ratio is small, the steering is light, the gear and rack meshing transmission is adopted, the angular transmission ratio of the steering system is moderate, the gear shaft and a steering wheel are connected through an intermediate shaft, and the two ends of the intermediate shaft are connected through universal joints, so that the whole steering system is smooth, and when tires run in parallel, the toe angle variation interval is small; the utility model discloses to the tire condition of turning to of beating obtain obvious suppression, the toe-in angle variation is less before the wheel, has reduced tire wear, has improved vehicle operating stability. The utility model can improve the bending sensitivity while ensuring the turning portability and the design of the hard point coordinate, and has both the turning sensitivity and the portability; the device has the advantages of light weight, simple structure, convenient assembly and disassembly, reliable performance and good practicability.
Claims (9)
1. A vehicle steering system is characterized by comprising a steering control mechanism and a steering transmission mechanism;
the steering control mechanism comprises a steering wheel (1), a steering wheel quick-release device (2), a quick-release connecting piece (3) and a frame connecting pipe (4); the quick-release connecting piece (3) comprises a quick-release connecting shaft (301), a frame connecting piece upper cover plate (302) and a frame connecting piece lower cover plate (303); one end of a frame connecting pipe (4) is fixed on a frame, the other end of the frame connecting pipe (4) is fixedly connected with an upper cover plate (302) of a frame connecting piece, the upper cover plate (302) of the frame connecting piece and a lower cover plate (303) of the frame connecting piece are connected through a bolt to form a quick-release connecting shaft hole, and a quick-release connecting shaft (301) is arranged in the quick-release connecting shaft hole; one end of a quick-release connecting shaft (301) is connected to a steering wheel (1) through a steering wheel quick-release device (2), and the other end of the quick-release connecting shaft (301) is connected with a first universal joint (5);
the steering transmission mechanism comprises a supporting seat (11), a gear transmission box (10) and a steering tie rod (13), the gear transmission box comprises a gear shell (101), a gear hole and a rack hole are formed in the gear shell (101), the axes of the gear hole and the rack hole are vertically arranged, a gear shaft (7) is arranged in the gear hole, a rack shaft (16) is arranged in the rack hole, a rack is arranged on the rack shaft (16), a gear meshed with the rack is arranged on the gear shaft (7), and two ends of the rack shaft (16) are respectively connected with the steering tie rod (13); a steering tie rod (13) is arranged on the frame through a support seat (11), and the end part of the steering tie rod (13) is connected to a steering wheel through a rod end bearing (1301) and a threaded sleeve (1302); one end of the gear shaft (7) is connected with a second universal joint through a gear input shaft (15), and the second universal joint is connected with the first universal joint (5) through an intermediate shaft (9).
2. The vehicle steering system according to claim 1, wherein both ends of the intermediate shaft (9) are connected to the second universal joint and the first universal joint (5) through intermediate shaft connecting pieces (6), the both ends of the intermediate shaft are provided with threaded holes, one end of the intermediate shaft connecting piece (6) is connected with the intermediate shaft through threads, and the other end of the intermediate shaft connecting piece (6) is connected to the second universal joint and the first universal joint (5) through a stop screw; the intermediate shaft (9) is provided with a thread locking screw for locking the intermediate shaft (9) and the intermediate shaft connecting piece (6).
3. The vehicle steering system according to claim 1, wherein a limit boss for preventing the quick-release connecting shaft (301) from axially sliding is arranged in a quick-release connecting shaft hole between the frame connecting piece upper cover plate (302) and the frame connecting piece lower cover plate (303).
4. A vehicle steering system according to claim 1, wherein a rack gear box (8) is installed at each end of the rack hole of the gear housing (101), the rack gear box comprises a rack housing (801), and the rack housing (801) is connected with the gear housing (101) through a bolt; the rack shaft (16) is arranged in the rack shell (801), and a linear bearing (802) which is matched with the rack shaft (16) to slide is arranged in the rack shell (801).
5. A vehicle steering system according to claim 4, wherein the support base (11) comprises a support base and a U-shaped snap cover, the rack housing (801) is fixed on the support base through the U-shaped snap cover, the support base is provided with a limit stop (12), the rack shaft (16) is provided with a limit block, the limit block comprises two lugs which are fixed on the rack shaft (16) through bolts, and the position of the two lugs on the rack shaft (16) is adjustable.
6. A vehicle steering system according to claim 1, wherein a compression block (102) is provided in the rack hole of the gear housing (101), a compression nut (103) for pressing the compression block (102) is provided on the gear housing (101), and the compression nut (103) is screwed with the gear housing (101).
7. A vehicle steering system according to claim 6, wherein one side of the pressing block (102) is provided with an arc surface which is matched with the rack shaft (16) to slide, and a pressing spring is arranged between the pressing block (102) and the pressing nut (103).
8. A vehicle steering system according to claim 1, characterized in that the quick release connecting shaft (301) is sleeved with a bearing, and the gear shaft (7) is sleeved with a deep groove ball bearing (14).
9. A vehicle steering system according to claim 1, wherein the second and first universal joints (5) each take the form of a cross joint, the single joint yaw angle being 37 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921483600.2U CN210416719U (en) | 2019-09-06 | 2019-09-06 | Vehicle steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921483600.2U CN210416719U (en) | 2019-09-06 | 2019-09-06 | Vehicle steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210416719U true CN210416719U (en) | 2020-04-28 |
Family
ID=70366325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921483600.2U Expired - Fee Related CN210416719U (en) | 2019-09-06 | 2019-09-06 | Vehicle steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210416719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844218A (en) * | 2021-10-13 | 2021-12-28 | 芜湖造船厂有限公司 | Steering transmission mechanism of amphibious vehicle |
-
2019
- 2019-09-06 CN CN201921483600.2U patent/CN210416719U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113844218A (en) * | 2021-10-13 | 2021-12-28 | 芜湖造船厂有限公司 | Steering transmission mechanism of amphibious vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200428 Termination date: 20210906 |