Adjustable and removable hidden DRS system for FSAE race car flap position

Abstract

The application discloses a kind of easily detachable hidden DRS systems of adjustable flap position of FSAE racing car, including steering gear clamping structure, with the end plate of fixed flap, tail wing skeleton structure, connecting rod mechanism and steering gear. Steering gear clamping structure is hidden in main wing, its side shape is rib shape, steering gear can be installed in it, end plate has clamp for clamping flap at specific position, and the clamp has two clamping positions, tail wing skeleton structure is located between two side end plates, including main wing, first flap and second flap, main wing has clamping mechanism and lug rib, bearing is equipped at the punching point of rib on flap. The hidden DRS system mechanism can hide larger steering gear in main wing by steering gear clamping structure, and the end plate with fixed flap can change the relative position of flap, so that the tail wing of FSAE racing car has more working state, so that vehicle can adapt to different race tracks.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flaps of FSAE racing cars, in particular to a detachable hidden DRS system for adjustable flap position of FSAE racing cars. BACKGROUND

[0002] DRS (Drag Reduction System, adjustable tail wing system) is a tail wing technology that uses air flow principle on racing cars, which mainly changes the air resistance and down pressure of the racing car by changing the inclination angle of the racing car tail wing, so as to improve the performance of the vehicle during acceleration, braking and cornering. Automobile aerodynamics has a great influence on the economy, maneuverability and power of the automobile, and also on the racing car competition which is second by second. The larger attack angle of the combined wing can provide sufficient negative lift, but it will also bring larger resistance, which is convenient for turning in the curve. The smaller attack angle of the combined wing may bring insufficient negative lift, but the resistance is smaller, which is convenient for straight-line acceleration.

[0003] The design level and competition level of FSAE racing cars of colleges and universities at home and abroad are improved year by year, and the structure of DRS system has appeared, but the servo is not well installed and hidden. Some racing cars only fix the servo on the main wing with bolts, which not only affects the air flow but also makes the local force of the main wing too large to cause material failure.

[0004] Some racing cars do not pay attention to the maintenance and adjustment after installation, and the designed mechanism is difficult to disassemble. Most of them use single rod groups for transmission, which will concentrate the stress and may cause material failure.

[0005] In addition, as for the wing gap, the vertical gap is kept at about 6% of the chord length, and the negative lift coefficient reaches the best value. The selection principle of the horizontal gap is that the flap can fully utilize the rising air flow of the main wing to improve its critical attack angle. Generally speaking, with the increase of the attack angle of the combined wing, the best vertical gap tends to decrease, and the best horizontal gap tends to increase.

[0006] However, no team has tried to move the relative position of the first flap rotation point and the second flap rotation point to change the wing gap and then change the attack angle of the combined wing to adapt to different tracks.

[0007] Therefore, it is necessary to design a detachable hidden DRS system for adjustable flap position of FSAE racing cars. SUMMARY

[0008] The purpose of the present application is to solve the problems in the prior art, and to provide a detachable hidden DRS system for adjustable flap position of FSAE racing cars, which is simple to install and disassemble, and can hide the servo.

[0009] To solve the above technical problems, the technical method adopted by the present application is: a kind of easily detachable hidden DRS system for adjustable FSAE race car flap position, including tail wing skeleton structure and the end plate for fixing flap being arranged in the both sides of tail wing skeleton structure, the tail wing skeleton structure includes main wing skeleton, first flap and second flap, the first flap and second flap are not in direct contact with the end plate;

[0010] The first flap and the second flap are rotated under the drive of the connecting rod mechanism, and the first flap connecting rod and the second flap connecting rod are used as the rotation center respectively;

[0011] A plurality of different positions of fixing hole positions for fixing the first flap connecting rod and the second flap connecting rod are provided on the end plate;

[0012] The fixing hole positions of the first flap connecting rod and the second flap connecting rod can be replaced.

[0013] Further, the main wing skeleton is provided with a rudder for driving the connecting rod mechanism to move;

[0014] The connecting rod mechanism includes a first connecting rod, a second connecting rod and a third connecting rod connected in sequence;

[0015] The first connecting rod is fixedly connected to the rudder at the first end, and is hingedly connected to the second connecting rod at the tail end;The tail end of the second connecting rod is hingedly connected to the first flap rib and the third connecting rod;

[0016] The tail end of the third connecting rod is hingedly connected to the second flap rib;

[0017] The first flap rib can drive the first flap to swing relative to the first flap connecting rod under the drive of the second connecting rod;

[0018] The second flap rib can drive the second flap to swing relative to the second flap connecting rod under the drive of the third connecting rod.

[0019] Further, one side of the first flap rib is hingedly connected to the tail end of the second connecting rod, and the other side is hingedly connected to the first flap connecting rod;The first flap is arranged between the tail end of the second connecting rod and the first flap connecting rod;

[0020] One side of the second flap rib is hingedly connected to the tail end of the third connecting rod, and the other side is hingedly connected to the second flap connecting rod;The second flap is arranged between the tail end of the third connecting rod and the second flap connecting rod.

[0021] Further, the fixed hole position comprises a first flap clamp upper clamping piece and a first flap clamp lower clamping piece matched with the first flap clamp upper clamping piece; the first flap clamp upper clamping piece and the first flap clamp lower clamping piece are detachably connected, and a plurality of fixed hole positions are formed on the butt joint surface after the first flap clamp upper clamping piece and the first flap clamp lower clamping piece are closed.

[0022] Further, the steering engine is fixed on the main wing connecting rod through a steering engine clamping structure; the steering engine clamping structure comprises a steering engine clamping plate and a steering engine fixing cover plate; the steering engine clamping plate is provided with a steering engine fixing groove matched with the steering engine and a fixing hole connected with the steering engine fixing cover plate.

[0023] Further, the rib with a lifting lug is further arranged on the main wing skeleton.

[0024] Further, the number of the steering engine clamping structure is two, and the steering engine clamping structure is symmetrically arranged on the main wing skeleton with respect to the rib with a lifting lug; the side surface shape of the steering engine clamping structure is a rib shape matched with the main wing section.

[0025] Further, the steering engine is connected with the first connecting rod through a steering engine rocker arm.

[0026] Further, the first flap connecting rod and the second flap connecting rod are carbon fiber tubes.

[0027] Further, the steering engine clamping structure and the connecting rod mechanism are made of aluminum alloy.

[0028] Compared with the prior art, the beneficial effects of the present application are:

[0029] 1. A plurality of fixed hole positions with different positions for fixing the first flap connecting rod and the second flap connecting rod are arranged on the end plate, so that the relative positions between the flaps can be adjusted according to different track conditions before the race, the attack angle is changed, the working state of the DRS is changed, and different combined wing attack angles are obtained. Therefore, the working state of the tail wing can be changed according to different tracks. For a track with more small curves, a position with a larger horizontal gap is adopted, the connecting rod is replaced, and a combined wing with a larger overall attack angle is obtained; for a track with fewer curves and more straight lines, a position with a smaller horizontal gap is adopted, the connecting rod is replaced, and a combined wing with a smaller overall attack angle is obtained.

[0030] 2. In the present application, the first flap rib and the second flap rib rotate around the first flap connecting rod and the second flap connecting rod, thereby driving the entire first flap and the second flap to rotate; therefore, the present application only needs to consider whether the connection between the first flap and the second flap and the end plate is fastened, and does not need to consider whether the first flap and the second flap can rotate relative to each other, which is beneficial to the adjustment of the positions of the first flap and the second flap and reduces the technical difficulty of realizing the position adjustment of the first flap and the second flap.

[0031] 3. The rudder installation structure of the present application is simple, and the rudder can be easily disassembled. When the rudder fixing cover plate is removed, the rudder is placed into the clamping mechanism main part, and then the rudder fixing cover plate is fixed on the clamping mechanism main part by bolts to complete the installation, which is convenient for the maintenance and debugging of the rudder. The side surface of the rudder clamping structure is the same as the rib, so that it plays a role in fixing the rudder and supporting the hollow wing piece at the same time.

[0032] 4. The system structure of the present application is stable, and the whole rudder clamping structure is installed on the main wing skeleton, which can well disperse the force transmitted by the rudder on the main wing connecting rod, and well protect the carbon fiber material of the hollow main wing piece. And the system adopts the mode of double rudder double rod group, which is beneficial to disperse the downward pressure generated by the flap to both sides through two sets of rod groups. Compared with the single rod group DRS system, the double rod group makes the force of the main wing skeleton more dispersed. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the overall structure schematic diagram of the DRS system mechanism after removing the wing piece in the present application;

[0034] Figure 2 It is the connection driving state schematic diagram of the flap connecting rod and connecting rod mechanism in the DRS system mechanism in the present application;

[0035] Figure 3 It is the connection state schematic diagram of the connecting rod mechanism in the DRS system mechanism in the present application;

[0036] Figure 4 It is the schematic diagram of the rudder clamping structure in the DRS system mechanism in the present application;

[0037] Figure 5 It is the structure schematic diagram of the end plate in the DRS system mechanism in the present application;

[0038] Figure 6 It is the structure schematic diagram of the fixing hole position in the DRS system mechanism in the present application;

[0039] Figure 7 It is the structure schematic diagram of the DRS system mechanism after assembling the wing piece in the present application.

[0040] In the figure: 1, main wing skeleton; 2, first flap; 3, second flap; 4, first flap clamp; 5, second flap clamp; 6, rudder clamping structure; 7, end plate; 8, connecting rod mechanism; 9, rudder; 10, rib with lifting lug; 11, first flap rib; 12, second flap rib; 13, rudder clamping plate; 14, rudder fixing cover plate; 15, first flap connecting rod; 16, second flap connecting rod; 17, first connecting rod; 18, second connecting rod; 19, third connecting rod; 20, rudder rocker arm; 21, first flap clamp first flap clamp upper clamp; 22, first flap clamp first flap clamp lower clamp; 23, hollow wing piece. Specific embodiments

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] Please refer to Figures 1-7 The present application provides a technical solution, a detachable hidden DRS system for adjustable flap position of FSAE racing car, including rudder clamping structure 6, end plate 7 with fixed flap, tail wing skeleton structure, including main wing skeleton 1, first flap 2, second flap 3, connecting rod mechanism 8 and rudder 9.

[0043] The number of rudder clamping structure 6 is two, which is symmetrically distributed on the main wing skeleton 1, and the side shape is rib shape, and the rudder 9 is fixedly installed in the inside, and the rib 10 with lifting lug is also two, which is symmetrically distributed on the main wing skeleton 1.

[0044] The connecting rod mechanism is composed of the first connecting rod 17, the second connecting rod 18 and the third connecting rod 19 connected by bolt connection. The first connecting rod 17 is connected to the rocker arm 20 of the rudder 9 through a bolt. The second connecting rod 18 is connected to the rib 11 on the first flap, and the third connecting rod 19 is connected to the rib 12 on the second flap.

[0045] The rib 11 on the first flap and the rib 12 on the second flap are symmetrically distributed on the left and right sides respectively, the rib 11 on the first flap is installed on the first flap connecting rod 15, the rib 12 on the second flap is installed on the second flap connecting rod 16, and the end plate 7 has a clamp for clamping the flap at a specific position, which is a first flap clamp 4 and a second flap clamp 5 respectively, and the flap clamp has two fixed hole positions for clamping the flap connecting rod.

[0046] Among them, the first flap clamp 4 and the second flap clamp 5 are the same structure.

[0047] The fixed way of the rudder clamp structure 6 is to put the rudder 9 into the rudder clamp plate 13 when the rudder fixed cover plate 14 is removed, and then use bolts to fix the rudder fixed cover plate 14 on the rudder clamp plate 13, and complete the installation. This method is more convenient to operate when installing and removing the bolts.

[0048] The connecting rod mechanism 8 drives the first flap 2 and the second flap 3 to rotate with the rudder 9 as the power source. There are bearings between the ribs 11 on the first flap and the first flap connecting rod 15, and there are also bearings between the ribs 12 on the second flap and the second flap connecting rod 16.

[0049] When rotating, the first flap connecting rod 15 and the second flap connecting rod 16 are fixed relative to the end plate 7, and the first flap rib 11 and the second flap rib 12 rotate relative to the connecting rod, thereby driving the entire first flap 2 and the second flap 3 to rotate.

[0050] Unlike most team DRS systems, the existing DRS system uses a rotating method in which the ribs and connecting rods are relatively fixed and rotate in contact with the end plate hole. The present application is that the first flap rib 11 and the second flap rib 12 rotate around the first flap connecting rod 15 and the second flap connecting rod 16, thereby driving the entire first flap 2 and the second flap 3 to rotate.

[0051] This design only needs to consider whether the first flap 2 and the second flap 3 are tightly connected with the end plate 7, without considering whether they can rotate relative to each other. This is beneficial for adjusting the position of the first flap 2 and the second flap 3, and reduces the technical difficulty of realizing the position adjustment of the first flap 2 and the second flap 3.

[0052] The end plate 7 is provided with a first flap clamp 4 and a second flap clamp 5, each clamp having two hole positions to clamp the flap.

[0053] Taking the first flap clamp 4 as an example, unscrew the bolt, and move the first flap clamp upper clamp 21 upward. At this time, the first flap connecting rod 15 can be adjusted from the first hole position to the second hole position. After adjustment, move the first flap clamp upper clamp 21 back, connect the first flap clamp upper clamp 21 and the first flap clamp lower clamp 22 with the bolt, and the fixing is completed. Similarly, the second flap clamp 3 can also adjust the position of the second flap 5. This operation is very convenient and simple, and the relative position of the flap can be quickly changed before the competition starts.

[0054] After adjusting the hole positions of the first flap connecting rod 15 and the second flap connecting rod 16, the second connecting rod 18 and the third connecting rod 19 should be replaced with connecting rods of different lengths to ensure normal operation. The use of non-extensible connecting rods is to ensure the stability of the operation.

[0055] The first flap connecting rod 15 and the second flap connecting rod 16 are carbon fiber tubes, which are lighter and stronger.

[0056] The first flap rib 11 and the second flap rib 12, the connecting rod mechanism 8 and the steering gear clamping structure 6 are all made of aluminum alloy 6061, and the rib thickness is 5mm.

[0057] Working principle: The steering gear 9 in the application adopts an existing industrial steering gear, which is fixed on the main wing connecting rod through the steering gear clamping structure 6, so that the main wing can bear the torque brought by the steering gear 9.

[0058] The steering gear rocker arm 20 extends above the main wing and is connected with the first connecting rod 17, drives the first flap 2 and the second flap 3 to rotate through the connecting rod mechanism 8, so as to realize the adjustment of the angle of the first flap 2 and the second flap 3.

[0059] The driver can independently adjust the inclination angle of the tail wing under different driving conditions to adapt to different conditions. While ensuring the normal working of the tail wing device, the air resistance brought by the tail wing is reduced, which is beneficial to improve the corner handling, driving stability and straight-line maximum speed of the racing car. The first flap clamp 4 and the second flap clamp 5 on the end plate can conveniently adjust the relative position between the flaps before the race according to different track conditions.

[0060] Taking the first flap clamp 4 as an example, the first flap clamp upper clamp piece 21 can be pushed upwards by unscrewing the bolt, at this time, the first flap connecting rod 15 can be adjusted from the first hole position to the second hole position, after adjustment, the first flap clamp upper clamp piece 21 is pushed back, and the first flap clamp upper clamp piece 21 and the first flap clamp lower clamp piece 22 are connected by the bolt to complete the fixation. While changing the relative position of the flaps, the connecting rod 8 is also replaced, that is, the original connecting rod 8 is removed and replaced with a new connecting rod 8 of different length, so that the working state of the DRS changes and different combined wing attack angles are obtained. In this way, the working state of the tail wing can be changed according to different tracks. For a track with more small corners, a position with a larger horizontal gap is adopted, the connecting rod 8 is replaced, and a combined wing with a larger overall attack angle is obtained. For a track with fewer corners and more straight lines, a position with a smaller horizontal gap is adopted, the connecting rod 8 is replaced, and a combined wing with a smaller overall attack angle is obtained.

[0061] The above is only the preferred specific embodiment of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A detachable hidden DRS system for FSAE race car with adjustable flap position, comprising a tail skeleton structure and end plates (7) arranged on both sides of the tail skeleton structure for fixing the flaps, the tail skeleton structure comprises a main wing skeleton (1), a first flap (2) and a second flap (3), characterized in that: The first flap (2) and the second flap (3) are not in direct contact with the end plate (7); The first flap (2) and the second flap (3) are driven by the linkage mechanism (8) to rotate around the first flap connecting rod (15) and the second flap connecting rod (16) as the rotation center, respectively; The end plate (7) is provided with a plurality of fixed hole positions at different positions for fixing the first flap connecting rod (15) and the second flap connecting rod (16); The fixed hole positions of the first flap connecting rod (15) and the second flap connecting rod (16) are replaceable.

2. The easily detachable concealed DRS system for adjustable flap position of FSAE race car of claim 1, wherein: The main wing skeleton (1) is provided with a steering engine (9) for driving the linkage mechanism (8) to move; The linkage mechanism (8) comprises a first linkage (17), a second linkage (18) and a third linkage (19) which are sequentially hinged; The first end of the first linkage (17) is fixedly connected with the steering engine (9), and the tail end is hinged with the second linkage (18); the tail end of the second linkage (18) is hinged with the first flap rib (11) and the third linkage (19); The tail end of the third linkage (19) is hinged with the second flap rib (12); The first flap rib (11) can drive the first flap (2) to swing relative to the first flap connecting rod (15) under the drive of the second linkage (18); The second flap rib (12) can drive the second flap (3) to swing relative to the second flap connecting rod (16) under the drive of the third linkage (19).

3. The easily detachable concealed DRS system for FSAE race car with adjustable flap position according to claim 2, characterized in that: One side of the first flap rib (11) is hinged with the tail end of the second linkage (18), and the other side is hinged with the first flap connecting rod (15); the first flap (2) is arranged between the tail end of the second linkage (18) and the first flap connecting rod (15); One side of the second flap rib (12) is hinged with the tail end of the third linkage (19), and the other side is hinged with the second flap connecting rod (16); the second flap (3) is arranged between the tail end of the third linkage (19) and the second flap connecting rod (16).

4. The easily detachable concealed DRS system for adjustable flap position of FSAE race car of claim 1, wherein: The fixed hole position comprises a first flap upper clamp piece (21) and a first flap lower clamp piece (22) matched with the first flap upper clamp piece (21); the first flap upper clamp piece (21) and the first flap lower clamp piece (22) are detachably connected, and a plurality of fixed hole positions are formed on the abutting surface after the first flap upper clamp piece (21) and the first flap lower clamp piece (22) are closed.

5. The easily detachable concealed DRS system for adjustable flap position of FSAE race car of claim 2, wherein: The steering engine (9) is fixed on the main wing connecting rod through a steering engine clamping structure (6); the steering engine clamping structure (6) comprises a steering engine clamping plate (13) and a steering engine fixing cover plate (14); the steering engine clamping plate (13) is provided with a steering engine fixing groove matched with the steering engine (9) and a fixing hole connected with the steering engine fixing cover plate (14).

6. The easily detachable concealed DRS system for FSAE race car with adjustable flap position according to claim 5, characterized in that: It also includes a rib (10) with lifting lugs arranged on the main wing skeleton (1).

7. The easily detachable concealed DRS system for FSAE race car with adjustable flap position according to claim 6, characterized in that: The number of the steering engine clamping structure (6) is two, which is symmetrically distributed on the main wing skeleton (1) about the rib (10) with lifting lugs; the side surface shape of the steering engine clamping structure (6) is a rib shape matched with the main wing section.

8. The easily detachable concealed DRS system for adjustable flap position of FSAE race car of claim 2, wherein: The steering engine (9) is connected to the first connecting rod (17) through a steering engine rocker arm (20).

9. The easily detachable concealed DRS system for adjustable flap position of FSAE race car of claim 1, wherein: The first flap connecting rod (15) and the second flap connecting rod (16) are carbon fiber tubes.

10. The easily detachable concealed DRS system for adjustable flap position of FSAE race car of claim 5, wherein: The steering engine clamping structure (6) and the connecting rod mechanism (8) are made of aluminum alloy.

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