CN215043204U

CN215043204U - Active empennage adjusting mechanism of university student formula car

Info

Publication number: CN215043204U
Application number: CN202120995283.3U
Authority: CN
Inventors: 陈言畅; 杨泽宇; 范昊; 朱俊杰; 胡顺安
Original assignee: Changshu Institute of Technology
Current assignee: Changshu Institute of Technology
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-12-07
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses an active regulation fin mechanism of university student's equation motorcycle race, left rocking arm including the symmetry setting, left side lever, the left branch vaulting pole, right side rocking arm, right side lever, right branch vaulting pole and fin, the fin includes the hanging beam, the upper beam wing, the main wing, left end plate and right-hand member board, both ends about upper beam wing and main wing are connected respectively to left end plate and right-hand member board, the hanging beam is located between upper beam wing and the main wing, the root and the main wing fixed connection of hanging beam, the head end of hanging beam is stretched before and is passed through the bearing rotation with the afterbody of motorcycle race and is connected, the axis of rotation of bearing is in the axis of ordinates of racing car, the bottom and the rear wheel support piece of racing car of rocking arm are connected, the head end of rocking arm is connected with the lower extreme of lever, the middle part of lever articulates in the end of branch, the head end of branch is connected in the afterbody of racing car, the sub-unit connection of bracing piece and end plate is passed through to the upper end of lever. The utility model discloses outside wheel downforce increases when can making the cycle racing cross the turn, reduces outside wheel and skids, lifts the wheel phenomenon.

Description

Active empennage adjusting mechanism of university student formula car

Technical Field

The utility model relates to a cycle racing fin mechanism, especially an active regulation fin mechanism of university student's equation cycle racing.

Background

The tail fin of the racing car has the function of enabling the air flow of the car body of the racing car to rise through the tail fin to generate downward pressure, so that the downward pressure is generated on the car, the load of a tire is increased, the adhesive force is improved, and the bending performance is improved. The adjustable tail fin is widely used for an F1 racing car, but the F1 racing car requires extremely high reliability, and the adjustable tail fin is complex in structure, has large influence on the weight of the racing car if being directly applied to a college formula car, so that the adjustable tail fin suitable for the college formula car needs to be designed. Chinese patents CN106741228A and CN108116515A both disclose tail wings suitable for formula cars of college students, and both of them obtain appropriate down force by the change of the tail wings to increase the race speed. However, the existing adjustable tail wings adjust the downward pressure of the whole car, the center of mass of the whole car is lower than the wheel axle of the car, the outer wheels lose part of the ground holding capacity when the car turns, and the outer wheels can slip or even lift the wheels due to insufficient ground holding.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned prior art defect, the utility model discloses a task lies in providing an active regulation fin mechanism of university student's equation motorcycle race, when solving the motorcycle race and crossing the turn, outside wheel grip weakens and produces the problem of skidding or even lifting wheel.

The utility model discloses technical scheme as follows: an active adjusting tail wing mechanism of an university student formula racing car comprises a left rocker arm, a right rocker arm, a left lever, a right lever, a left support rod, a right support rod and a tail wing, wherein the tail wing comprises a hanging beam, an upper beam wing, a main wing, a left end plate and a right end plate, the left end plate and the right end plate are respectively connected to the left end and the right end of the upper beam wing and the main wing, the hanging beam is positioned between the upper beam wing and the main wing, the root of the hanging beam is fixedly connected with the main wing, the head end of the hanging beam extends forwards and is rotatably connected with the tail of the racing car through a bearing, the rotating axis of the bearing is positioned on the longitudinal axis of the racing car, the bottom end of the left rocker arm is connected with a rear wheel supporting piece of the racing car, the head end of the left rocker arm is connected with the lower end of the left lever, the middle part of the left lever is hinged to the tail end of the left support rod, the head end of the left support rod is connected with the tail end of the racing car, the upper end of the left lever is connected with the lower part of the left end plate through the left support rod, the bottom of right rocking arm is connected with the right rear wheel support piece of cycle racing, the head end of right rocking arm with the lower extreme of right lever is connected, the middle part of right lever articulates in the end of right branch pole, the head end of right branch pole is connected in the afterbody of cycle racing, the upper end of right lever pass through right bracing piece with the sub-unit connection of right end plate.

Further, in order to guarantee the stability of the tail fin in the driving process of the racing car, the tail fin control device comprises a left spring damper and a right spring damper which are transversely arranged in the left-right direction, the telescopic end of the left spring damper is connected with the middle of the left rocker arm, the telescopic end of the right spring damper is connected with the middle of the right rocker arm, and the left spring damper and the right spring damper are fixedly connected to the body of the racing car.

Further, in order to enlarge the action amplitude of the left rocker arm and the right rocker arm when the racing car turns to enable the tail wing to deflect sufficiently, the distance between the head end of the left strut and the head end of the left rocker arm is larger than the distance between the head end of the left rocker arm and the bottom end of the right rocker arm, and the distance between the head end of the right strut and the head end of the right rocker arm is larger than the distance between the head end of the right strut and the bottom end of the right rocker arm.

Furthermore, the left rocker arm, the left lever, the left support rod, the right rocker arm, the right lever and the right support rod are arranged in a bilateral symmetry mode.

Further, the left spring damper and the right spring damper are arranged in bilateral symmetry.

Furthermore, a plurality of outer edge fins which are arranged up and down are respectively arranged on the outer side surfaces of the left end plate and the right end plate.

Compared with the prior art, the utility model the advantage lie in:

the movement of the wheels is converted into the rotation of the empennage through the rocker arm, the lever and the supporting rod, and the effect of adjusting the wheels inside and outside the empennage can be realized without changing the structure of the empennage. When the racing car is bent over, the inner side wheels extrude the car body, so that the rotation amount of the tail wing in the reverse direction is increased, the inner side of the tail wing is pushed to ascend, the outer side of the tail wing descends, and the downward pressure of the outer side is increased. By changing the angle position of the tail wing when the tail wing is bent, the wheel on the outer side has higher downward pressure to make up the reduction of the driving stability caused by the reduction of the grip force of the wheels on the outer side, so that the racing car can finish passing at a higher speed on a bend, and the single-turn time is shortened.

Drawings

Fig. 1 is a schematic structural diagram of an active adjusting tail mechanism of a formula car for college students.

Fig. 2 is a partial structural view of the connection between the swing arm and the rear wheel support.

Fig. 3 is a schematic view of the connection of the active adjusting tail wing and the vehicle body.

FIG. 4 is a front view of the active adjusting tail mechanism of the formula car for college students.

Detailed Description

The present invention will be further described with reference to the following examples, which should not be construed as limiting the invention.

Referring to fig. 1 to 4, the active adjusting tail mechanism of the university formula racing car according to the present embodiment includes a left rocker arm 1, a right rocker arm 2, a left lever 3, a right lever 4, a left support rod 5, a right support rod 6, and a tail, wherein the main structure of the tail includes a suspension beam 7, an upper beam wing 8, a main wing 9, a left end plate 10, and a right end plate 11, the left end plate 10 and the right end plate 11 are respectively connected to the left and right ends of the upper beam wing 8 and the main wing 9, and the outer side surfaces of the left end plate 10 and the right end plate 11 are respectively provided with three outer edge fins 12 obliquely arranged from bottom to top and back to top. The suspension beam 7 is located between the upper beam wing 8 and the main wing 9. The hanging beam 7 is of a curved flat plate structure with the width gradually reduced from the root to the head end, the root of the hanging beam 7 is fixedly connected with the main wing 9, the head end of the hanging beam 7 extends forwards to be rotatably connected with the tail of the racing car through a bearing 13, and the rotating axis of the bearing 13 is located on the longitudinal axial plane of the racing car. That is, the tail can make a right-left oblique swing about the rotational axis of the bearing 13. In order to ensure the stability of the structure, the carbon tubes 14 are connected to the upper surfaces of the left and right sides of the main wing 9 from both sides of the hanging beam 7 near the head end. The pressure above the main wing 9 is driven by the negative pressure of the lower wing surface of the upper beam wing 8, so that the lift coefficient of the tail wing can be effectively improved. The front of the main wing 9 is provided with a leading edge flap 15 which can have a higher camber after being matched with the main wing 9, so that the tail wing has better aerodynamic performance. The end plate and the outer edge fin 12 play a role in longitudinally supporting the tail fin with the hanging beam 7 and the carbon tube 14 while maintaining pressure for the fin and improving the downward pressure of the tail fin, and the carbon tube 14 plays a role in transversely fixing the tail fin.

The left and right inclination of the tail wing is realized by the linkage of a left rocker arm 1, a right rocker arm 2, a left lever 3, a right lever 4, a left support rod 5 and a right support rod 6. The support structure of the rear wheel of the racing car is that a wheel core 16 rotating together with the wheel is carried by a vertical column 17, the vertical column 17 is driven to move up and down when the vehicle is subjected to an over-bending, and a lower lifting lug 18 of the vertical column 17 is used for connecting with the left rocker arm 1 and the right rocker arm 2. The bottom end of the left rocker arm 1 is hinged with a lower lifting lug 18 of a vertical column 17 of a left rear wheel of the racing car, and the bottom end of the right rocker arm 2 is hinged with a lower lifting lug 18 of a vertical column 17 of a right rear wheel of the racing car. The head end of the left rocker arm 1 is hinged with the lower end of the left lever 3 through a fisheye ball head, and the head end of the right rocker arm 2 is hinged with the lower end of the right lever 4 through a fisheye ball head. A left supporting rod 19 and a right supporting rod 20 are fixed at the tail part of the racing car body along the longitudinal direction of the car body, the middle part of the left lever 3 is hinged at the tail end of the left supporting rod 19, and the middle part of the right lever 4 is hinged at the tail end of the right supporting rod 20. The upper end of the left lever 3 is hinged with a left support rod 5, and the tail end of the left support rod 5 is hinged with the lower part of the left end plate 10. The upper end of the right lever 4 is hinged with a right supporting rod 6, and the tail end of the right supporting rod 6 is hinged with the lower part of the right end plate 11. The distance between the head end of the left support rod 19 and the head end of the left rocker arm 1 is greater than the distance between the head end of the left rocker arm 1 and the bottom end of the right rocker arm 2, and the distance between the head end of the right support rod 20 and the head end of the right rocker arm 2 is greater than the distance between the head end of the right rocker arm 2 and the bottom end of the right rocker arm 2. So that the small position change of the bottom ends of the left lever 3 and the right lever 4 can be amplified to cause the left support rod 5 and the right support rod 6 to move more greatly, thereby controlling the side inclination of the empennage. In order to make the tail wing have more stable support, the left spring damper 21 and the right spring damper 22 which are transversely arranged in the left-right direction are adopted to provide damping in the embodiment. The flexible end of left spring damper 21 is connected with the middle part of left rocking arm 1, and the flexible end of right spring damper 22 is connected with the middle part of right rocking arm 2, and left spring damper 21 and right spring damper 22 fixed connection are in the car body of racing. The left rocker arm 1, the left lever 3, the left support rod 5 and the left spring damper 21 are respectively arranged in bilateral symmetry with the right rocker arm 2, the right lever 4, the right support rod 6 and the right spring damper 22.

The working process of the active adjusting tail wing mechanism is as follows: when the cycle racing is bent, because the whole car barycenter of cycle racing is less than the tire axis height, use the turn left as an example, the left side wheel receives the power of being close to the automobile body, the extrusion to left spring damper 21 is compared and can be very big in the outside wheel, whole car moment mainly concentrates on the left side, under left rocking arm 1 promotes, the bottom of left lever 3 is to the automobile body internal pendulum, the fin left side is raised and the right side is pressed down, make the wheel department on right side possess higher holding down force, in order to compensate the reduction of the stability of traveling that the reduction of right side wheel grip brought. When turning to the right, then reverse action, the fin right side is raised and the left side is pressed down, makes left wheel department possess higher downforce.

Claims

1. The active type adjusting tail wing mechanism of the university student formula racing car is characterized by comprising a left rocker arm, a right rocker arm, a left lever, a right lever, a left support rod, a right support rod and a tail wing, wherein the tail wing comprises a hanging beam, an upper beam wing, a main wing, a left end plate and a right end plate, the left end plate and the right end plate are respectively connected to the left end and the right end of the upper beam wing and the main wing, the hanging beam is positioned between the upper beam wing and the main wing, the root of the hanging beam is fixedly connected with the main wing, the head end of the hanging beam extends forwards and is rotatably connected with the tail of the racing car through a bearing, the rotating axis of the bearing is positioned on the longitudinal axis of the racing car, the bottom end of the left rocker arm is connected with a left rear wheel support piece of the racing car, the head end of the left rocker arm is connected with the lower end of the left lever, the middle part of the left lever is hinged to the tail end of the left support rod, the head end of the left support rod is connected with the tail of the racing car, the upper end of the left lever is connected with the lower portion of the left end plate through the left supporting rod, the bottom end of the right rocker arm is connected with a rear wheel supporting piece of the racing car, the head end of the right rocker arm is connected with the lower end of the right lever, the middle portion of the right lever is hinged to the tail end of the right supporting rod, the head end of the right supporting rod is connected to the tail portion of the racing car, and the upper end of the right lever is connected with the lower portion of the right end plate through the right supporting rod.

2. The active adjusting tail mechanism of the university student's equation car as claimed in claim 1, comprising a left spring damper and a right spring damper transversely arranged in the left-right direction, wherein the telescopic end of the left spring damper is connected with the middle part of the left rocker arm, the telescopic end of the right spring damper is connected with the middle part of the right rocker arm, and the left spring damper and the right spring damper are fixedly connected with the car body of the car.

3. The active adjusting tail mechanism of the university student's equation car of claim 1 wherein the distance between the head end of the left strut and the head end of the left rocker arm is greater than the distance between the head end of the left rocker arm and the distance between the head end of the right strut and the head end of the right rocker arm is greater than the distance between the head end of the right rocker arm and the bottom end of the right rocker arm.

4. The active adjusting tail mechanism of the university student formula racing car as claimed in claim 1, wherein the left rocker arm, the left lever, the left support rod and the right rocker arm, the right lever, the right support rod are arranged in bilateral symmetry.

5. The active adjusting tail mechanism of the university student's formula car as claimed in claim 2, wherein the left spring damper and the right spring damper are arranged in bilateral symmetry.

6. The active adjusting tail mechanism of the university student's formula car as claimed in claim 1, wherein the outer side surfaces of the left end plate and the right end plate are respectively provided with a plurality of outer edge fins arranged up and down.