CN114720085A - Fixed wing aircraft wind resistance performance detection device - Google Patents

Abstract

The invention relates to the technical field of fixed-wing aircraft detection, in particular to a fixed-wing aircraft wind resistance detection device which comprises a blowing mechanism, a base, a fixing mechanism and a detection mechanism, wherein the blowing mechanism comprises a supporting plate fixed on one side of the outer wall of the top of the base, a circular groove is formed in the outer wall of one side of the supporting plate, and the blowing mechanism, the fixing mechanism and the detection mechanism are positioned above the base. The friction force between the fixing block and the airplane wing can be increased, and therefore the fixing stability is improved.

Description

A detection device for wind resistance performance of fixed-wing aircraft

technical field

The invention relates to the technical field of fixed-wing aircraft detection, in particular to a wind resistance performance detection device of a fixed-wing aircraft.

Background technique

Fixed-wing aircraft, also known as fixed-wing UAV, is a fixed-wing micro-UAV. It is widely used because of its low noise and good concealment. However, fixed-wing UAVs also have some problems. For example, the endurance capacity is poor, etc. After the production and processing of the fixed-wing aircraft is completed, its wind resistance performance needs to be tested. During the wind resistance performance test and detection process of the fixed-wing aircraft, the fixed-wing aircraft needs to be fixed. The way of fixing the fixed-wing aircraft on the wind resistance performance detection device of the wing aircraft is to fix it through the support rod.

Publication No. CN113532790A China Invention discloses a wind resistance performance detection device for a fixed-wing aircraft. The patent includes a body, a mounting plate is installed on the body, and a driving mechanism for wind test is arranged on the mounting plate. A support rod is slidably connected through the push mechanism, and a fixed-wing aircraft is connected to the support rod through a fixing mechanism which is convenient for fixing. The beneficial effects of the invention are: in the detection process of the fixed-wing aircraft wind resistance performance detection device, in the process of fixing the body, the body is abutted against the first arc-shaped plate, and the first arc-shaped plate is fixed. The electromagnet is energized to generate a magnetic force under the action of the electromagnetic force, and the body is attracted and fixed by the magnetic force to complete the fixation of the body.

However, the above-mentioned patent has the following shortcomings, which can not change the wind direction, thereby reducing the detection range of the aircraft wing, and the above-mentioned patent has a single fixing method, which cannot simulate the wind resistance performance of the wing when detecting the aircraft, and has limitations in use. Therefore, it is urgent to A device for detecting the wind resistance performance of a fixed-wing aircraft is required to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a detection device for the wind resistance performance of a fixed-wing aircraft, so as to solve the problems raised in the above-mentioned background art.

The technical scheme of the present invention is: a wind resistance detection device for a fixed-wing aircraft, comprising a blowing mechanism, a base, a fixing mechanism and a detection mechanism, the blowing mechanism includes a support plate fixed on one side of the outer wall of the top of the base, and the support plate is one The side outer wall is provided with a circular groove, the blowing mechanism, the fixing mechanism and the detection mechanism are located above the base, and the blowing mechanism includes a circular rod that rotates on the inner walls of both ends of the circular groove, and the opposite sides of the two circular rods The same mounting ring is installed on the outer wall, and the experimental fan is installed on the inner wall of the installation ring;

An arc-shaped seat is installed on one end of the outer wall of the top of the base, and a rotating shaft is rotatably connected to the bottom of the outer wall of one end of the arc-shaped seat. A mounting column is sleeved on the outer wall of the circumference of the rotating shaft, and the outer walls on both sides of the mounting column are provided with a first limit stop The fixing mechanism includes a fixing frame that slides on the inner walls of the two first limit slots. An installation slot is formed on the outer wall of one end of the fixing frame, and the inner walls on both sides of the installation slot are rotatably connected with the same bidirectional screw rod. Both sides of the outer wall of the rod circumference are connected with sliding blocks through threaded rotation, and a fixing block is installed on the outer wall of one end of the sliding block, and the outer wall of one side of the fixing frame is rotatably connected with locking bolts;

The detection mechanism includes rectangular grooves fixed at the top of the base and the other end of the outer wall is equidistantly distributed, and the inner wall of the rectangular groove is slidably connected with a fixed column, a connecting column is installed on the outer wall of the top of the fixed column, and a second limit is opened on the outer wall of one end of the connecting column. A support block is slidably connected to the inner wall of the second limit groove, a connecting plate is installed on the outer wall of one side of the support block, and the outer wall of one end of the connecting plate is slidably inserted with fixed rods distributed at equal distances.

Preferably, a motor is installed on the outer wall of one end of the support plate, and the output shaft of the motor is fixedly connected to the outer wall of one end of the corresponding circular rod through bolts. A support leg is installed on all of them, and a support screw is rotatably connected to the outer wall of one end of the installation column.

Preferably, one side of the bidirectional screw rod extends to the outside of the fixing frame, and a first hand wheel is installed on the outer wall of one side of the bidirectional screw rod, and a third sliding groove is opened on the outer wall of the opposite side of the two fixing blocks. The inner wall of the third sliding slot is slidably connected with a pressing bump, a support spring is installed on the outer wall of one side of the pressing bump, and the outer wall of the supporting spring is fixedly connected to the inner wall of the third sliding slot.

Preferably, one end of the rotating shaft extends to the outside of the arc-shaped seat, and one end of the circumferential outer wall of the rotating shaft is sleeved with a driven gear, and the outer wall of the other end of the arc-shaped seat is rotatably connected with a support shaft, and the circumferential outer wall of the support shaft is sleeved There is a driving gear, which meshes with the outer wall of the driven gear.

Preferably, a protective casing is installed on the outer wall of the other end of the arc-shaped seat, and the protective casing is located outside the driving gear and the driven gear. The outer wall of one end is slidably connected, and the outer wall of one end of the support shaft is installed with a second hand wheel.

Preferably, a buffer spring is sleeved on the circumferential outer wall of the fixing rod, and a pressure sensor is installed on the outer wall of one side of the fixing rod.

Preferably, a circular block is installed on the outer wall of the other side of the fixing rod, and the connecting plate is located between the circular block and the buffer spring.

Preferably, the outer walls of both ends of the support block are provided with openings, and the inner walls of the openings are slidably connected with connecting blocks, and the outer walls of one end of the connecting blocks are installed with rubber heads distributed at equal distances.

Preferably, a connection spring is installed on the outer wall of the other end of the connection block, and the other end of the connection spring is fixedly connected to the inner wall of the opening.

The present invention provides a fixed-wing aircraft wind resistance detection device by improvement, which has the following improvements and advantages compared with the prior art:

First: the present invention is provided with a fixing mechanism, firstly, the distance between the two fixing frames is adjusted according to the width of the aircraft wing, and then the fixing frame is fixed on the mounting column by using locking bolts, so that the width of the aircraft wing can be adjusted. To test the height, turn the first handwheel on the fixed frame, which can drive the sliding blocks on the two-way screw rod to approach each other, so that the fixed block can squeeze and fix the aircraft wing, and the support spring on the fixed block and the extrusion bump , which can increase the friction between the fixed block and the aircraft wing, thereby improving the stability of the fixed, and can simulate the wind resistance performance of the aircraft when flying;

Second: the present invention is provided with a blowing mechanism, and the experimental fan is turned on, so that the wind resistance performance of the aircraft wing can be detected, and then the motor is turned on, and the circular rod is used to drive the experimental fan on the installation ring to rotate, so as to realize the detection of the experimental fan. It can quickly adjust the wind direction and measure the performance of the aircraft wing. Rotating the second handwheel drives the rotating shaft on the driven gear to rotate through the driving gear on the support shaft, thereby driving the installation column on the rotating shaft to rotate, which can change the aircraft. The fixed position of the wing, which further improves the detection range of the aircraft wing;

Third: the present invention is provided with a detection mechanism, and the connecting column is inserted into a suitable rectangular slot through the fixing column, so that the pressure sensor on the fixing rod is at a suitable distance from the experimental fan, which is convenient for subsequent detection. Rod, buffer spring and pressure sensor, when the experimental fan blows against the aircraft wing, it will drive its outer wall to deform, and the deformed aircraft wing will squeeze the pressure sensor on the fixed rod, which can detect the blowing of the experimental fan. Detect the deformation results of the aircraft wing, so that the staff can obtain the detection data.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the present invention is further explained:

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is the side view structure schematic diagram of the present invention;

3 is a schematic structural diagram of the driven gear, the support shaft and the driving gear of the present invention;

4 is a schematic structural diagram of a detection mechanism of the present invention;

5 is a schematic structural diagram of the fixing mechanism of the present invention;

6 is a schematic structural diagram of a blowing mechanism of the present invention;

Fig. 7 is the sectional structure schematic diagram of the fixed block of the present invention;

FIG. 8 is a schematic cross-sectional view of the support block of the present invention.

Description of reference numbers:

1. PLC controller; 2. Air blowing mechanism; 201, supporting plate; 202, mounting ring; 203, experimental fan; 204, circular rod; 205, motor; 3, base; 4, mounting column; 5, fixing mechanism; 501, fixing frame; 502, locking bolt; 503, first hand wheel; 504, two-way screw; 505, sliding block; 506, fixing block; 507, extrusion bump; 508, support spring; 6, support screw ;7, arc seat; 8, detection mechanism; 801, connecting column; 802, circular block; 803, connecting plate; 804, fixing rod; 805, buffer spring; 806, pressure sensor; 807, support block; 808, Connection spring; 809, connection block; 9, rectangular slot; 10, protective casing; 11, pointer; 12, second handwheel; 13, rotating shaft; 14, driven gear; 15, support shaft; 16, driving gear .

Detailed ways

The present invention will be described in detail below, and the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The present invention provides a fixed-wing aircraft wind resistance performance detection device through improvement, and the technical scheme of the present invention is:

As shown in Figures 1-8, a fixed-wing aircraft wind resistance detection device includes a blowing mechanism 2, a base 3, a fixing mechanism 5 and a detection mechanism 8, and the blowing mechanism 2 includes a support fixed on one side of the outer wall of the top of the base 3 Plate 201, and the outer wall of one side of the support plate 201 is provided with a circular groove, the blowing mechanism 2, the fixing mechanism 5 and the detection mechanism 8 are located above the base 3, and the blowing mechanism 2 includes a circular rod that rotates on the inner walls of both ends of the circular groove. 204, and the same mounting ring 202 is mounted on the outer wall of the opposite side of the two circular rods 204, and the experimental fan 203 is mounted on the inner wall of the mounting ring 202;

An arc-shaped seat 7 is installed on one end of the outer wall of the top of the base 3, and a rotating shaft 13 is rotatably connected to the bottom of the outer wall of one end of the arc-shaped seat 7. The outer wall of the circumference of the rotating shaft 13 is sleeved with a mounting column 4, and the outer walls of both sides of the mounting column 4 are provided with a second A limiting slot, the fixing mechanism 5 includes a fixing frame 501 sliding on the inner walls of the two first limiting slots, an outer wall of one end of the fixing frame 501 is provided with a mounting groove, and the inner walls on both sides of the mounting groove are rotatably connected with the same two-way screw 504 , both sides of the outer wall of the bidirectional screw 504 are connected with a sliding block 505 through threaded rotation, and a fixing block 506 is installed on the outer wall of one end of the sliding block 505, and a locking bolt 502 is rotatably connected to the outer wall of one side of the fixing frame 501;

The detection mechanism 8 includes a rectangular groove 9 fixed at the top outer wall of the base 3 with equidistantly distributed rectangular grooves 9, and the inner wall of the rectangular groove 9 is slidably connected with a fixed column, the top outer wall of the fixed column is installed with a connecting column 801, and one end of the connecting column 801 is opened on the outer wall. There is a second limit slot, the inner wall of the second limit slot is slidably connected with a support block 807, a connecting plate 803 is installed on the outer wall of one side of the support block 807, and the outer wall of one end of the connecting plate 803 is slidably inserted with fixed rods 804 distributed at equal distances. .

Further, a motor 205 is installed on the outer wall of one end of the support plate 201, and the output shaft of the motor 205 is fixedly connected to the outer wall of one end of the corresponding circular rod 204 through bolts. The four corners are equipped with support legs, the outer wall of one end of the installation column 4 is rotatably connected with a support screw 6, the outer wall of the bottom of the support leg is installed with a rubber seat, the motor 205 is turned on, and the circular rod 204 drives the experimental fan 203 on the mounting ring 202 to rotate. , so that the rotation of the experimental fan 203 can be realized, the wind direction can be quickly adjusted, and the performance of the aircraft wing can be measured.

Further, one side of the bidirectional screw rod 504 extends to the outside of the fixing frame 501, and the outer wall of one side of the bidirectional screw rod 504 is installed with a first hand wheel 503, and the outer wall of the opposite side of the two fixing blocks 506 is provided with a third sliding groove. , and the inner wall of the third sliding slot is slidably connected with an extrusion bump 507 , a support spring 508 is installed on the outer wall of the extrusion bump 507 , and the outer wall of the support spring 508 is fixedly connected to the inner wall of the third sliding slot.

Further, one end of the rotating shaft 13 extends to the outside of the arc-shaped seat 7, and one end of the circumferential outer wall of the rotating shaft 13 is sleeved with a driven gear 14, and the outer wall of the other end of the arc-shaped seat 7 is rotatably connected with a supporting shaft 15, and the circumference of the supporting shaft 15 is connected. The outer wall is sleeved with the driving gear 16 , the driving gear 16 meshes with the outer wall of the driven gear 14 , and the outer diameter of the driven gear 14 is larger than the outer diameter of the driving gear 16 , so accurate adjustment can be achieved.

Further, a protective casing 10 is installed on the outer wall of the other end of the arc-shaped seat 7, and the protective casing 10 is located outside the driving gear 16 and the driven gear 14. One end of the circumferential outer wall of the rotating shaft 13 is sleeved with a pointer 11, and the outer wall of the pointer 11 is sleeved. It is slidably connected with the outer wall of one end of the protective housing 10, and the outer wall of one end of the support shaft 15 is installed with a second hand wheel 12. The rotating second hand wheel 12 drives the rotating shaft 13 on the driven gear 14 to rotate through the driving gear 16 on the supporting shaft 15. As a result, the mounting post 4 on the rotating shaft 13 is driven to rotate, and the fixed position of the aircraft wing can be changed, thereby further improving the detection range of the aircraft wing.

Further, a buffer spring 805 is sleeved on the circumferential outer wall of the fixing rod 804, and a pressure sensor 806 is installed on the outer wall of one side of the fixing rod 804, and the outer walls on both sides of the buffer spring 805 are respectively fixedly connected with the pressure sensor 806 and the outer wall on the opposite side of the connecting plate 803. , the pressure sensor 806 model is YYJ/GY1-1201, and the pressure sensor 806 is electrically connected to the signal input end of the PLC controller 1 through a signal line.

Further, a circular block 802 is installed on the outer wall of the other side of the fixing rod 804, and the connecting plate 803 is located between the circular block 802 and the buffer spring 805. By being provided with the detection mechanism 8, the connecting post 801 is inserted into the appropriate position through the fixing post. The distance between the pressure sensor 806 on the fixed rod 804 and the experimental fan 203 is suitable, which is convenient for the next detection. When blowing on the aircraft wing, the outer wall of the aircraft will be deformed, and the deformed aircraft wing will squeeze the pressure sensor 806 on the fixed rod 804, which can detect the deformation result of the aircraft wing under the blowing of the experimental fan 203, which is convenient for Staff get test data.

Further, the outer walls of both ends of the support block 807 are provided with openings, and the inner walls of the openings are slidably connected with connecting blocks 809 .

Further, a connecting spring 808 is installed on the outer wall of the other end of the connecting block 809, and the other end of the connecting spring 808 is fixedly connected to the inner wall of the opening. The appropriate height on the connection column 801 is convenient for the subsequent detection processing.

Working principle: Fix the device on the work site through the support legs, and then connect the power supply. By setting the fixing mechanism 5, firstly adjust the distance between the two fixing frames 501 according to the width of the aircraft wing, and then use the locking bolts. 502 The fixing frame 501 is fixed on the mounting column 4, which can adjust the test height of the aircraft wing. Rotating the first hand wheel 503 on the fixing frame 501 can drive the sliding blocks 505 on the two-way screw rod 504 to approach each other, thereby making the fixing The block 506 is used to squeeze and fix the aircraft wing. The support spring 508 and the extrusion bump 507 on the fixed block 506 can increase the friction between the fixed block 506 and the aircraft wing, thereby improving the stability of the fixing. , by being provided with a blowing mechanism 2, and opening the experimental fan 203, the wind resistance performance of the aircraft wing can be detected, and then the motor 205 is turned on, and the circular rod 204 is used to drive the experimental fan 203 on the installation ring 202 to rotate, so as to realize the rotation of the experimental fan 203. The rotation of the experimental fan 203 can quickly adjust the wind direction and measure the performance of the aircraft wing. Rotating the second hand wheel 12 drives the rotating shaft 13 on the driven gear 14 to rotate through the driving gear 16 on the supporting shaft 15, thereby driving the rotating shaft 13 The rotation of the mounting post 4 on the aircraft wing can change the fixed position of the aircraft wing, thereby further improving the detection range of the aircraft wing. By being provided with a detection mechanism 8, the connecting column 801 is inserted into the appropriate rectangular slot 9 through the fixed column, The distance between the pressure sensor 806 on the fixing rod 804 and the experimental fan 203 is suitable, which is convenient for the next detection. , it will drive the deformation of its outer wall, and the deformed aircraft wing will squeeze the pressure sensor 806 on the fixed rod 804, which can detect the deformation result of the aircraft wing under the blowing of the experimental fan 203, which is convenient for the staff to obtain the detection data.

Claims (9)

1. A fixed-wing aircraft wind resistance detection device, characterized in that: comprising a blower mechanism (2), a base (3), a fixing mechanism (5) and a detection mechanism (8), and the blower mechanism (2) comprises a fixed A support plate (201) on one side of the outer wall of the top of the base (3), and a circular groove is formed on the outer wall of one side of the support plate (201), the blowing mechanism (2), the fixing mechanism (5) and the detection mechanism (8) It is located above the base (3), and the blowing mechanism (2) includes a circular rod (204) that rotates on the inner walls of both ends of the circular groove, and the two circular rods (204) are mounted with the same mounting on the outer wall on the opposite side. a ring (202), an experimental fan (203) is installed on the inner wall of the installation ring (202); An arc-shaped seat (7) is installed on one end of the outer wall of the top of the base (3), and a rotating shaft (13) is rotatably connected to the bottom of the outer wall of one end of the arc-shaped seat (7). The column (4), and the outer walls of both sides of the installation column (4) are provided with first limiting grooves, and the fixing mechanism (5) includes a fixing frame (501) sliding on the inner walls of the two first limiting grooves. An installation groove is formed on the outer wall of one end of the frame (501), and the inner walls on both sides of the installation groove are rotatably connected with the same bidirectional screw rod (504), and the two sides of the outer circumference of the bidirectional screw rod (504) are connected with a sliding block (504) through a thread rotation. 505), and a fixing block (506) is installed on the outer wall of one end of the sliding block (505), and a locking bolt (502) is rotatably connected to the outer wall of one side of the fixing frame (501); The detection mechanism (8) comprises rectangular grooves (9) fixed at the other end of the top outer wall of the base (3) with equidistant distribution, and the inner wall of the rectangular groove (9) is slidably connected with a fixed column, and the top outer wall of the fixed column is installed with a connection A column (801), and the outer wall of one end of the connecting column (801) is provided with a second limit groove, the inner wall of the second limit groove is slidably connected with a support block (807), and the outer wall of one side of the support block (807) is installed with a connection A plate (803) is provided, and the outer wall of one end of the connecting plate (803) is slidably inserted with fixed rods (804) distributed at equal distances. 2. The wind resistance performance detection device of a fixed-wing aircraft according to claim 1, characterized in that: a motor (205) is installed on the outer wall of one end of the support plate (201), and the output shaft of the motor (205) is connected to the motor (205) through a bolt. The outer wall of one end of the corresponding circular rod (204) is fixedly connected, the outer wall of the other end of the support plate (201) is mounted with a PLC controller (1), and the four corners of the outer wall of the bottom of the base (3) are provided with supporting legs and mounting columns. (4) A support screw (6) is rotatably connected to the outer wall of one end. 3. The device for detecting wind resistance of a fixed-wing aircraft according to claim 1, wherein one side of the two-way screw (504) extends to the outside of the fixing frame (501), and the two-way screw (504) ) a first hand wheel (503) is installed on the outer wall of one side, and a third sliding groove is opened on the outer wall of the opposite side of the two fixing blocks (506), and the inner wall of the third sliding groove is slidably connected with extrusion bumps (507), a support spring (508) is installed on the outer wall of one side of the extrusion protrusion (507), and the outer wall of one side of the support spring (508) is fixedly connected with the inner wall of the third sliding groove. 4. The device for detecting wind resistance of a fixed-wing aircraft according to claim 1, wherein one end of the rotating shaft (13) extends to the outside of the arc seat (7), and the rotating shaft (13) has a circumference A driven gear (14) is sleeved on one end of the outer wall, a support shaft (15) is rotatably connected to the outer wall of the other end of the arc-shaped seat (7), and a driving gear (16) is sleeved on the circumferential outer wall of the support shaft (15). The gear (16) meshes with the outer wall of the driven gear (14). 5. The wind resistance performance detection device of a fixed-wing aircraft according to claim 4, characterized in that: a protective casing (10) is installed on the outer wall of the other end of the arc-shaped seat (7), and the protective casing (10) ) is located outside the driving gear (16) and the driven gear (14), a pointer (11) is sleeved on one end of the circumferential outer wall of the rotating shaft (13), and the outer wall of the pointer (11) is connected to the outer wall of one end of the protective casing (10). For sliding connection, a second hand wheel (12) is installed on the outer wall of one end of the support shaft (15). 6 . The wind resistance detection device of a fixed-wing aircraft according to claim 1 , wherein a buffer spring (805) is sleeved on the circumferential outer wall of the fixed rod (804), and one side of the fixed rod (804) is sleeved with a buffer spring (805). 7 . A pressure sensor (806) is installed on the outer wall, and the outer walls on both sides of the buffer spring (805) are respectively fixedly connected to the outer wall on the opposite side of the pressure sensor (806) and the connecting plate (803). 7 . The wind resistance performance detection device of a fixed-wing aircraft according to claim 6 , wherein a circular block ( 802 ) is installed on the outer wall of the other side of the fixed rod ( 804 ), and a connecting plate ( 803 ) is installed. 8 . Located between the circular block (802) and the buffer spring (805). 8. The wind resistance detection device of a fixed-wing aircraft according to claim 1, wherein the outer walls of both ends of the support block (807) are provided with openings, and the inner walls of the openings are slidably connected with connecting blocks (809). ), the outer wall of one end of the connecting block (809) is provided with rubber heads distributed at equal distances. 9 . The wind resistance detection device of a fixed-wing aircraft according to claim 8 , wherein the outer wall of the other end of the connecting block ( 809 ) is provided with a connecting spring ( 808 ), and the other end of the connecting spring ( 808 ) is installed with a connecting spring ( 808 ). Fixed connection with the inner wall of the opening.

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