CN108189917B

CN108189917B - Connecting device for front wings of racing cars

Info

Publication number: CN108189917B
Application number: CN201810026874.2A
Authority: CN
Inventors: 夏阳; 韩小强; 刘晓宇; 毛泽钡
Original assignee: Dalian University of Technology
Current assignee: Dalian University of Technology
Priority date: 2018-01-11
Filing date: 2018-01-11
Publication date: 2020-07-14
Anticipated expiration: 2038-01-11
Also published as: CN108189917A

Abstract

The invention discloses a connecting device for front wings of racing cars, which consists of two pairs of same connecting rod mechanisms above the front wings and three connecting rods VII, VIII and IX below the front wings. The connecting device can transmit the jumping of the tires at two sides to the front wing through the push rod of the suspension and the link mechanism of the device, so that the front wing of the racing car is linked with the suspension system of the racing car, the posture of the front wing is automatically controlled, and the front wing is always parallel to the connecting line of the wheel centers of the two front wheels. The problem that the front wing rubs against the ground during turning is effectively solved, the stability of the racing car is improved, the safety of the racing car and personnel is guaranteed, the front wing stably outputs downward pressure, the height of the front wing is reduced to the maximum extent within a regular allowable range, and the ground effect is maximized.

Description

Connecting device for front wings of racing cars

Technical Field

The invention relates to a mechanical connecting device, in particular to a connecting device for controlling the posture of a front wing of a racing car.

Background

Aerodynamic kits play an important role in improving the aerodynamic performance of automobiles. In the traditional technology, the front wing part of the aerodynamic external member is generally integrally fixed on the frame, when the racing car turns, the posture of the front wing is changed due to the change of the driving posture of the car body, so that the phenomenon that one side of the front wing is scratched against the ground is easily generated, and the integral performance, the game result and the safety of personnel of the racing car are greatly influenced.

The prior art "a front wing adjustable formula car aerodynamic suite device" (patent No. 201620202283.2) discloses a front wing control device. Although the device can also solve the problem of rubbing between the front wing and the ground to a certain extent, the device is mainly considered and designed from the angle of rubbing caused by 'nods' in starting and stopping when a vehicle moves straight.

The invention is mainly improved from the condition that when a vehicle turns, the front wing is easy to incline towards one side to cause one side to scrape and rub the ground.

Disclosure of Invention

The invention aims to solve the technical problem of providing a connecting device for front wings of a racing car, which enables the front wings of the racing car to be always kept parallel to a connecting line of wheel centers of two front wheels during the running of the racing car by automatically controlling the postures of the front wings, thereby effectively avoiding the situation that the front wings are scraped and rubbed with the ground when the racing car turns.

The technical scheme of the invention is realized as follows:

a connecting device for front wings of racing cars comprises two pairs of same link mechanisms above the front wings and three links VII, VIII and IX below the front wings; the connecting rod mechanisms are symmetrically arranged on two sides of the car body, the first connecting rod mechanism consists of rods I, II, III and IV and rocker arms V and VI, the upper end of the rod I is connected to a connecting point of a racing car suspension push rod and a suspension rocker arm, the lower end of the rod I is connected with the rocker arm V, and two ends of the rod II are respectively connected with the rocker arms V and VI; the rocker arm V is a triangular rocker arm, a connecting point i opposite to the longest edge of the rocker arm is fixedly connected to the frame, and the other two connecting points ii and iii are respectively connected with the rod ends of the rods I and II; the rocker arm VI is a quadrilateral rocker arm, a connecting point iv is fixedly connected to the frame, a connecting point v is connected with the rod end of the rod II, a connecting point vi is connected with the rod end of the rod III, and a connecting point vii is connected with the rod end of the rod IV; the composition of the second connecting rod mechanism and the connection relationship among all parts are correspondingly the same as those of the first connecting rod member; and one ends of three connecting rods VII, VIII and IX below the front wing are connected to the frame, and the other ends of the three connecting rods VII, VIII and IX are connected to lifting lugs below the front wing.

Preferably, rod end joint bearings are installed at the rod ends I, II, III and IV in the first link mechanism, rod end joint bearings are installed at the rod ends corresponding to the same rod end in the second link mechanism, and rod end joint bearings are installed at the rod ends VII, VIII and IX below the front wing.

The invention has the beneficial effects that:

1. the front wing of the racing car can be connected with a suspension system of the racing car through the device, namely, the unsprung installation technology is adopted, one end of the unsprung installation technology is connected with the suspension rocker arm, and the other end of the unsprung installation technology is connected with the main wing of the front wing, so that the posture of the front wing is controlled, and the front wing is always kept parallel to a connecting line of wheel centers of two front wheels.

2. The front wing can stably output downward pressure, and the height of the front wing can be reduced to the maximum within the regular allowable range, so that the ground effect is maximized.

3. The problem that the front wing is scraped with ground during turning is effectively solved, the stability of the racing car is improved, and the safety of the racing car and personnel is guaranteed.

Drawings

FIG. 1 is a schematic view showing the overall structure of a connecting device for the front wing of a racing car according to the present invention.

FIG. 2 is a schematic diagram of the transmission mechanism of the connecting device of the front wing of the racing car.

FIG. 3 is a schematic view of a triangular rocker arm of the connecting device for the front wing of a racing car of the present invention.

FIG. 4 is a schematic view of a quadrilateral rocker arm of a connecting device for the front wing of a racing car according to the invention.

FIG. 5 is a schematic view of a length-adjustable connecting rod with two ends provided with positive and negative threads and a rod end joint bearing of the connecting device for the front wing of the racing car.

FIG. 6 is a schematic diagram of the connection and motion transmission between the connection device of the front wing of the racing car and the steel pipe truss type frame.

FIG. 7 is a schematic view of the connection device of the front wing of the racing car and the front wing.

In the figure: 1 is a first transmission mechanism of a racing car, and 2 is a second transmission mechanism of the racing car; 101. 102, 103 and 104 are all transmission mechanism connecting rods; 105 is a triangular rocker arm of the transmission, 106 is a quadrangular rocker arm of the transmission; 107. 108, 109 are front wing lower connecting rods.

Detailed Description

The following detailed description of specific embodiments of the invention is made with reference to the accompanying drawings in which:

1. as shown in fig. 1, 2, 3, 4, 5, 6 and 7, the connecting device for the front wing of the racing car consists of two pairs of same

connecting rod mechanisms

1 and 2 above the front wing and three connecting rods VII 107, VIII 108 and IX 109 below the front wing; the connecting

rod mechanisms

1 and 2 are symmetrically arranged on two sides of a vehicle body, the first connecting rod mechanism 1 consists of rods I101, II 102, III 103 and IV 104 and rocker arms V105 and VI 106, the upper end of the rod I101 is connected to a connecting point of a racing vehicle suspension push rod and a suspension rocker arm, the lower end of the rod I101 is connected with the rocker arm V105, and two ends of the rod II 102 are respectively connected with the rocker arms V105 and VI 106; the rocker arm V105 is a triangular rocker arm, the connecting point i 1051 opposite to the longest edge of the rocker arm is fixedly connected to the frame, and the other two connecting points ii 1052 and iii 1053 are respectively connected with the rod ends of the rods I101 and II 102; the rocker arm VI 106 is a quadrilateral rocker arm, a connecting point iv 1061 is fixedly connected to the frame, a connecting point v 1062 is connected with the rod end of the rod II 102, a connecting point vi 1063 is connected with the rod end of the rod III 103, and a connecting point vii 1064 is connected with the rod end of the rod IV 104; the composition of the second connecting rod mechanism 2 and the connection relationship among all parts are the same as those of the first connecting rod component 1; and one ends of three connecting rods VII 107, VIII 108 and IX 109 below the front wing are all connected to the frame, and the other ends of the three connecting rods are all connected to lifting lugs below the front wing. Further, rod end joint bearings 1011 are mounted at the rod ends of the first, second, third and

fourth rods

101, 102, 103 and 104 in the first link mechanism 1, rod end joint bearings 1011 are mounted at the rod ends of the second link mechanism 2 corresponding to the same rod ends, and rod end joint bearings 1011 are mounted at the rod ends of the three links vii, viii,

ix

107, 108 and 109 below the front wing.

As shown in fig. 1, the specific functional relationship before each component in the above embodiment is that the run-out of the tires on both sides is transmitted to the front wing through the push rods of the suspension and the link mechanism of the device, and the vertical movement of the outer point of the double wishbone suspension of the racing car, namely the connecting point of the push rods of the suspension of the racing car and the rocker arm of the suspension can be equivalent to the run-out of the tires in the vertical direction. According to the practical situation of suspension design, the transmission ratio of an outer point of a suspension to a rocker arm of the suspension in the vertical direction is approximately 1; namely, assuming that the left wheel is fixed and the right wheel jumps by 25mm, the motion of the suspension rocker arm, namely the uppermost connecting point in the link mechanism 2, in the vertical direction is also 25mm, according to the transmission of the link mechanism 2, the connecting point of the link mechanism 2 and the front wing moves upwards by 10mm, and the connecting point of the link mechanism 1 and the front wing is fixed, the motion positions of points on the front wing corresponding to the outer points of the left and right suspensions can be calculated, namely the left side descends by 13mm, the right side ascends by 12mm, so that the front wing and the ground tend to be parallel. The transmission of motion in the linkage 2 is shown in figure 6, the amount of displacement o at each point in the previous embodiment₁＝25mm，u₂＝u₃＝18.7mm， u₄＝u₅＝10mm。

As shown in fig. 6 and 7, the

link mechanisms

1 and 2 in the above embodiments are symmetrically installed on both sides of the racing car body; one end of the link mechanism is connected with the suspension rocker arm, and the other end is connected with the main wing of the front wing, namely, the link mechanism is connected with a lifting lug fixed on the upper surface of the front wing (as shown in the attached figure 7, and no reference number is made in the figure) through connecting rods III 103 and IV 104 in the link mechanism 1 and connecting rods III 'and IV' in the corresponding link mechanism 2; the supports of the rocker arms V105 and VI 106 are welded with the frame; one ends of the connecting rods VII 107, VIII 108 and IX 109 are connected to the frame, and the other ends of the connecting rods VII, VIII 108 and IX 109 are connected to the lifting lugs below the front wings. During the racing, the connecting device can transmit the displacement of the suspension rocker arm to the front wing through the

connecting rod mechanisms

1 and 2, thereby controlling the posture of the front wing and enabling the front wing to be always parallel to the connecting line of the wheel centers of the two front wheels, namely always parallel to the ground. Because the sizes of the motorcade racing cars, the positions of the suspensions and the elastic elements are different, the lengths of the connecting rods and the positions of the rocker arms need to be designed according to different transmission ratios under different conditions.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any design concept that the displacement of the up-and-down jumping of the racing car wheel is transmitted to the front wing of the racing car through the link transmission mechanism to keep the front wing of the racing car in the posture and avoid the front wing from rubbing against the ground belongs to the scope of the technical concept of the present invention, and any person skilled in the art can be within the technical scope of the present invention, and the technical scheme and the concept of the present invention are equivalent to replace or change, and are all covered within the scope of the present invention.

Claims

1. A connecting device for front wings of racing cars comprises two pairs of same link mechanisms (1 and 2) above the front wings and three links VII, VIII and IX (107, 108 and 109) below the front wings; the connecting rod mechanisms (1 and 2) are symmetrically arranged on two sides of a vehicle body, the first connecting rod mechanism (1) consists of rods I, II, III and IV (101, 102, 103 and 104) and rocker arms V and VI (105 and 106), the upper end of the rod I (101) is connected to a connecting point of a racing vehicle suspension push rod and a suspension rocker arm, the lower end of the rod I is connected with the rocker arm V (105), and two ends of the rod II (102) are respectively connected with the rocker arms V and VI (105 and 106); the rocker arm V (105) is a triangular rocker arm, the connecting point i (1051) opposite to the longest edge of the rocker arm is fixedly connected to the frame, and the other two connecting points ii and iii (1052 and 1053) are respectively connected with the rod ends of the rods I and II (101 and 102); the rocker arm VI (106) is a quadrilateral rocker arm, a connecting point iv (1061) is fixedly connected to the frame, a connecting point v (1062) is connected with the rod end of the rod II (102), a connecting point vi (1063) is connected with the rod end of the rod III (103), and a connecting point vii (1064) is connected with the rod end of the rod IV (104); the other ends of the rod III (103) and the rod IV (104) are connected with lifting lugs fixed on the upper surface of the front wing; the composition of the second connecting rod mechanism (2) and the connection relationship among all parts are correspondingly the same as those of the first connecting rod component (1); one ends of three connecting rods VII, VIII and IX (107, 108 and 109) below the front wing are connected to the frame, and the other ends of the three connecting rods are connected to lifting lugs below the front wing.

2. The connection device of claim 1, wherein: rod end joint bearings (1011) are installed at rod ends of rods I, II, III and IV (101, 102, 103 and 104) in the first link mechanism (1), rod end joint bearings (1011) are installed at rod ends of the rods corresponding to the same second link mechanism (2), and rod end joint bearings (1011) are installed at rod ends of three connecting rods VII, VIII and IX (107, 108 and 109) below the front wing.