Sports equipment stability detection device

Abstract

The invention provides a sports equipment stability detection device, and relates to the field of sports equipment testing. The sports equipment stability detection device comprises a main frame, a connecting back plate and a point location testing backboard, and the connecting back plate is fixed to the back face of the point location testing backboard; the rear end of the testing basket penetrates through the point position testing backboard and then is fixed to the connecting backboard; the testing device further comprises a bidirectional testing assembly and a multidirectional testing assembly, the bidirectional testing assembly is connected with the main frame and the connecting back plate, the multidirectional testing assembly is connected with the main frame and the connecting back plate, and a plurality of air pressure sensors are arranged in the main frame. According to the stability detection device for the sports equipment, air pressure change generated by compression or stretching can be recorded by arranging the two-way test assembly and the air bag A, so that the air pressure sensor connected with the air bag A can record two-way motion data of the connecting back plate, and a more stable basketball stand can be customized and deduced according to the data by arranging the test basket.

Description

Technical Field

[0001] The invention relates to the field of sports equipment testing, in particular to a sports equipment stability detection device. Background Art

[0002] Sports equipment refers to the general term for various instruments, equipment and supplies used in competitive sports and fitness exercises. Sports equipment and sports are interdependent and promote each other. According to the nature of sports equipment, sports equipment can generally be divided into four categories: designated equipment, self-provided equipment, field equipment and other equipment. Basketball stands are a type of field equipment. In order to ensure the safety of use, field equipment will be tested for stability after placement or installation. When testing the stability of basketball stands, the existing method usually uses a vibrator to detect the tilt state and shaking degree of the basketball stand, and uses a dynamometer to detect the stability of the basketball stand. This method is simple to operate and can effectively detect the maximum force that the basketball stand can withstand when it is stable, and the detection effect is good. However, the vibrator and dynamometer used in the above method are in continuous contact with the basketball stand body, and the position cannot be changed during the detection process. Multiple operations are required to achieve the requirements for detection of the entire basketball stand at different angles, thereby increasing the detection steps, and cannot simulate the situation after the basketball and the basketball stand collide in actual situations, thereby reducing the accuracy of the basketball stand stability detection.

[0003] Existing patent: CN116242600A discloses a sports equipment stability detection device, including a bottom plate, a height adjustment unit, a detection unit and an observation unit. When detecting the stability of a basketball stand, the existing method is usually to use a vibrometer to detect the tilt state and shaking degree of the basketball stand, and to use a dynamometer to detect the stability of the basketball stand. The detection effect is good, but this method requires multiple operations to achieve the requirements of detection at different angles of the entire basketball stand, and cannot simulate the actual situation after the basketball collides with the basketball stand, thereby reducing the accuracy of the basketball stand stability detection.

[0004] The detection components and pressing components adopted in this solution can simulate the stress conditions of the basketball stand under different conditions, realize multi-directional stability detection of the basketball stand, improve the diversity and accuracy of the detection, and increase the use occasions of the device.

[0005] The above scheme can simulate the stress conditions of the basketball stand under different situations and can test the stability of the basketball stand. However, the basketball stand cannot be used as a reference object and the stress points of the basketball stand cannot be tested. Therefore, it can only play a partial role in testing the stability of the basketball stand and making improvements. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a sports equipment stability detection device, which solves the problems raised in the above background technology.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a sports equipment stability detection device, including a main frame, a connecting backboard and a point test backboard, the connecting backboard is fixed to the back of the point test backboard; also includes a test basket, the rear end of the test basket passes through the point test backboard and is fixed to the connecting backboard; also includes a bidirectional test component and a multidirectional test component, the bidirectional test component is connected to the main frame and the connecting backboard, the multidirectional test component is connected to the main frame and the connecting backboard, a plurality of air pressure sensors are arranged in the main frame, and the point test backboard, the test basket, the bidirectional test component and the multidirectional test component are all connected to the air pressure sensors; The bidirectional test assembly includes two end plates and an intermediate plate. The intermediate plate is located between the two end plates. One of the end plates is fixed to the back of the connecting back plate, and the other end plate is fixed to the main frame. Both sides of the intermediate plate are hinged to the two end plates by hinged ears A. The two hinged ears A are perpendicular to each other. Four rubber columns A are provided between the end plates and the intermediate plates. The four rubber columns A correspond to the four corners of the intermediate plates and the end plates respectively. Two airbags A are provided between the intermediate plates and the end plates. The airbags A are located in the rotation direction of the hinged ears A. When the angle between the intermediate plate and the end plate changes, the airbags A can be stretched and compressed. The airbags A are connected to the air pressure sensor.

[0008] Preferably, the multi-directional test assembly includes a four-way connecting rod and a compression frequency vibration mechanism. There are four four-way connecting rods, which are divided into two upper and lower groups. One end of any four-way connecting rod is hinged to an angle connected to the back of the back plate. There are two compression frequency vibration mechanisms, which are respectively fixed to the front and rear sides of the main frame, and one end of each is in the main frame. The upper and lower four-way connecting rods on one side have their ends away from the connection to the back plate hinged to the compression frequency vibration mechanism.

[0009] Preferably, the compression frequency vibration mechanism includes two airbag shells, each of which is provided with an airbag B. The two airbag shells are staggered and fixed, and the cavities inside the two airbag shells are interconnected. The internal spaces of the airbags B inside the two airbag shells are interconnected. A pressure block is provided at the center of one side where the end face of the airbag shell is connected to the four-way connecting rod. The pressure block is connected to the end face of the airbag shell by an elastic ring. The end of the four-way connecting rod is hinged to the pressure block away from the connecting back plate. The movement of the pressure block can stretch and squeeze the airbag B. The air pressure sensor is fixedly connected to the airbag shell and connected to the airbag B.

[0010] Preferably, the test basket includes a basket, a base and an airbag C, the base is fixed to the basket, the upper end of the back side of the base is hinged to the connecting back plate by a hinge ear B, the airbag C is located between the lower end of the back side of the base and the connecting back plate, the airbag B is fixed to the two respectively, and rubber columns B are provided between the four corners of the base and the connecting back plate, the rubber columns B are respectively connected to the base and the connecting back plate, and the airbag C is connected to the air pressure sensor.

[0011] Preferably, the point test backboard includes a hollow backboard, a thin film pressure sensor and a pressure panel. The back of the hollow backboard is fixed to the connecting backboard, and the pressure panel is fixed to the front of the hollow backboard. There is a cavity between the two. A plurality of thin film pressure sensors are provided and distributed in a matrix in the cavity. The thin film pressure sensor is fixed to the rear wall of the hollow backboard and in contact with the pressure panel.

[0012] Preferably, the bottoms of the hollow backboard and the pressure panel are both provided with through grooves, which penetrate through the two, the base is located in the through grooves, and the front end of the base is flush with the front face of the pressure panel.

[0013] Preferably, the four-way connecting rod is arranged obliquely, and the four four-way connecting rods are closed downward and rearward away from one end connected to the back plate, and the four-way connecting rods distributed front and back are symmetrically arranged with respect to the vertical center line connected to the back plate and the vertical center line of the main frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The sports equipment stability detection device, by setting a two-way test component, the main frame plays the role of supporting the point test backboard, and acts as a support member during actual installation. Therefore, when the basketball hits the basket in the middle of the point test backboard, since the connecting backboard is fixed together with the point test backboard, the connecting backboard should be forced to move relative to the main frame. However, a rubber column A is provided, so the movement becomes a slight vibration, so that the four air bags A can record the air pressure changes caused by compression or stretching, and the air pressure sensor connected thereto can record the two-way movement data of the connecting backboard.

[0015] 2. The sports equipment stability detection device is equipped with a multi-directional test component. When the basketball stand is used daily, it will hit the corners. If the basketball hits the corner of the test backboard, the four-way connecting rod can collect the force data of the four corners of the back plate. When the vibration force is transmitted to the compression frequency vibration mechanism, the airbag B included therein can send the air pressure change fluctuation to the air pressure sensor to record the pressure change data of the remaining positions of the back plate, which can provide data support for the stability test of the later equipment.

[0016] 3. The sports equipment stability detection device sets a test basket. When shooting, the basket will also be hit by the basketball. Generally speaking, the basket will be hit from top to bottom by the basketball, but the actual situation is diverse. Frequent impacts on the basket will cause the screws to loosen and there will be risks of falling. Therefore, the force data of the basket can be captured by airbag C. When the air pressure fluctuation of airbag C is transmitted to the air pressure sensor, the pressure data of the basket can be recorded. By fitting with the sensor test curves of airbags B and airbags A, it can be determined whether the stability of the sports equipment in long-term use is qualified, and a more stable basketball stand can be inferred based on the data customization.

[0017] 4. The sports equipment stability detection device sets points to test the backboard. Since it contains multiple thin film pressure sensors, it can record the position where the basketball hits the backboard when shooting. Then, it combines the data with multiple air pressure sensors to analyze the different data changes and curve changes caused by impacts at different positions, so as to develop more stable sports equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a top view of the structure of the present invention; Figure 3 It is a side view of the structure of the present invention; Figure 4 This is a structural breakdown diagram of the present invention; Figure 5 For the present invention Figure 4 A magnified view of a local area in ; Figure 6 This is a schematic diagram of the structure of the point test backboard of the present invention; Figure 7 This is a back structural diagram of the connection back plate of the present invention; Figure 8 For the present invention Figure 7 A magnified view of a local area in ; Fig. 9 It is a partial structural diagram of the compression frequency vibration mechanism of the present invention.

[0019] In the figure: 1. main frame; 2. connecting backboard; 3. point test backboard; 301. hollow backboard; 302. film pressure sensor; 303. pressure panel; 304. through slot; 4. test basket; 401. basket; 402. base; 403. airbag C; 404. hinged ear B; 405. rubber column B; 5. two-way test assembly; 501. end plate; 502. middle plate; 503. hinged ear A; 504. rubber column A; 505. airbag A; 6. multi-directional test assembly; 601. four-way connecting rod; 602. compression frequency vibration mechanism; 6021. airbag shell; 6022. airbag B; 6023. pressure block; 6024. elastic ring; 7. air pressure sensor. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0022] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In addition, in this application, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0024] like Figure 1-9As shown, a sports equipment stability detection device includes a main frame 1, a connecting backboard 2 and a point test backboard 3, wherein the connecting backboard 2 is fixed to the back of the point test backboard 3; it also includes a test basket 4, the rear end of the test basket 4 passes through the point test backboard 3 and is fixed to the connecting backboard 2; it also includes a bidirectional test component 5 and a multidirectional test component 6, the bidirectional test component 5 connects the main frame 1 and the connecting backboard 2, the multidirectional test component 6 connects the main frame 1 and the connecting backboard 2, a plurality of air pressure sensors 7 are arranged in the main frame 1, and the point test backboard 3, the test basket 4, the bidirectional test component 5 and the multidirectional test component 6 are all connected to the air pressure sensor 7.

[0025] The bidirectional test assembly 5 includes two end plates 501 and an intermediate plate 502. The intermediate plate 502 is located between the two end plates 501. One of the end plates 501 is fixed to the back of the connecting back plate 2, and the other end plate 501 is fixed to the main frame 1. Both sides of the intermediate plate 502 are hinged to the two end plates 501 by hinged ears A503. The two hinged ears A503 are perpendicular to each other. Four rubber columns A504 are provided between the end plates 501 and the intermediate plates 502. The four rubber columns A504 correspond to the four corners of the intermediate plates 502 and the end plates 501 respectively. Two airbags A505 are provided between the intermediate plates 502 and the end plates 501. The airbags A505 are located in the rotation direction of the hinged ears A503. When the angle between the intermediate plates 502 and the end plates 501 changes, the airbags A505 can be stretched and compressed. The airbags A505 are connected to the air pressure sensor 7.

[0026] The main frame 1 is used to connect the vertical beams supporting the basketball stand. The interior of the main frame 1 is a hollow structure. The data collector, analysis chip and microcomputer are all installed in the main frame 1. After the air pressure sensor 7 obtains the measured pressure change data, the resistance value of the resistor changes. The 0-5V signal voltage is obtained from the sensor element, received by the data collector after A / D conversion, and then the data collector transmits the result to the computer in an appropriate form.

[0027] One of the two hinged ears A503 is used for up and down rotation, and the other is used for front and back rotation. The rotating shaft of the hinged ear A503 is installed with a bearing to further reduce the resistance during rotation. The rubber column A504 is a solid rubber cylinder, which is not easily compressed. When the rubber column A504 supports the middle plate 502 and the end plate 501, the middle plate 502 and the end plate 501 can be regarded as a whole, which does not affect the tester's use of the basketball stand. However, when the force of the basketball acts on the connecting back plate 2, the slight compression of the rubber column A504 will also cause the air pressure inside the airbag A505 to change. The airbag A505 is filled with nitrogen at a constant air pressure. The airbag A505 is provided with a pipeline connecting the air pressure sensor 7. When the airbag A505 is compressed or pulled, the air pressure sensor 7 will sensitively sense the change in the internal pressure of the airbag A505, thereby determining the slight rotation of the connecting back plate 2 up and down and front and back.

[0028] The multi-directional test assembly 6 includes a four-way connecting rod 601 and a compression frequency vibration mechanism 602. There are four four-way connecting rods 601, which are divided into two groups, one end of each four-way connecting rod 601 is hinged to an angle on the back of the back plate 2. There are two compression frequency vibration mechanisms 602. The two compression frequency vibration mechanisms 602 are respectively fixed to the front and rear sides of the main frame 1, and one end of each is in the main frame 1. The upper and lower four-way connecting rods 601 on one side have their ends away from the back plate 2 hinged to the compression frequency vibration mechanism 602.

[0029] The four-way connecting rod 601 is a metal rod, which is connected to the connecting back plate 2 by bolts, and the connection between the two can rotate. The four-way connecting rod 601 can resist the compression frequency vibration mechanism 602 or pull the compression frequency vibration mechanism 602. It can both compress and pull, so the compression frequency vibration mechanism 602 can obtain two data.

[0030] The compression frequency vibration mechanism 602 includes two airbag shells 6021, each of which is provided with an airbag B6022. The two airbag shells 6021 are staggered and fixed, and the cavities inside the two are interconnected. The internal spaces of the airbags B6022 inside the two are interconnected. A pressure block 6023 is provided at the center of one side where the end face of the airbag shell 6021 is connected to the four-way connecting rod 601. The pressure block 6023 and the end face of the airbag shell 6021 are connected by an elastic ring 6024. The end of the four-way connecting rod 601 away from the connection back plate 2 is hinged to the pressure block 6023. The movement of the pressure block 6023 can stretch and squeeze the airbag B6022. The air pressure sensor 7 is fixedly connected to the airbag shell 6021 and is connected to the airbag B6022.

[0031] The airbag shell 6021 is made of a metal shell, and the airbag B6022 inside is the same as the airbag A505 and is filled with constant pressure nitrogen. The elastic ring 6024 is made of the same material as the rubber column A504, both of which are made of rubber. When the four-way connecting rod 601 presses against the pressure block 6023, the elastic ring 6024 produces a slight deformation, causing the pressure block 6023 to squeeze the airbag B6022, so that the air pressure sensor 7 can obtain the pressure data of the airbag B6022. When the four-way connecting rod 601 pulls the pressure block 6023, the same tensile range is also smaller. The same airbag B6022 will produce a small amplitude air pressure fluctuation. The air pressure sensor 7 can sensitively capture this fluctuation, thereby drawing an air pressure change curve, and transmitting the obtained data to the computer, so as to test the force data of the four corners.

[0032] The test basket 4 includes a basket 401, a base 402 and an airbag C403. The base 402 is fixed to the basket 401. The upper end of the back side of the base 402 is hinged to the connecting back plate 2 by a hinge ear B404. The airbag C403 is located between the lower end of the back side of the base 402 and the connecting back plate 2. The airbag B6022 is fixed to the two respectively. Glue columns B405 are provided between the four corners of the base 402 and the connecting back plate 2. The glue columns B405 are respectively connected to the base 402 and the connecting back plate 2. The airbag C403 is connected to the air pressure sensor 7.

[0033] The basket 401 is the same as the existing structure, except that the fixed base 402 is changed to a movable one. The rubber column B405 is the same as the rubber column A504 and is used to limit the rotation of the base 402. When the basket 401 is pressed downward, the rubber column B405 will be slightly compressed, and the air bag C403 will produce air pressure fluctuations. The data of the air pressure fluctuations can be detected by the air pressure sensor 7. The rubber columns A504 and B405 are set to imitate existing sports equipment, but increase the space that can be used for testing.

[0034] The point test backboard 3 includes a hollow backboard 301, a thin film pressure sensor 302 and a pressure panel 303. The back of the hollow backboard 301 is fixed to the connecting backboard 2, and the pressure panel 303 is fixed to the front of the hollow backboard 301. There is a cavity between the two. A plurality of thin film pressure sensors 302 are provided and distributed in a matrix in the cavity. The thin film pressure sensor 302 is fixed to the rear wall of the hollow backboard 301 and contacts the pressure panel 303.

[0035] The thin film pressure sensor 302 is a device that converts pressure into resistance change. It is composed of sensitive materials such as carbon paste wrapped in PET material. The matrix FSR circuit is usually composed of intersecting rows and columns. Due to the FSR, 60 circuit traces and 60 columns of circuit traces can form 3600 intersections, and each intersection is a sensor point. In this way, a pressure distribution map covering 3600 sensor points can be drawn. The 60 rows and 60 columns of circuit traces converge at the end of the cable and are connected to a 120-pin connector. When pressure is applied to the sensor area containing 3600 sensor points, the force on each sensor point may be different, so the corresponding output voltage will be different. According to the characteristics of the FSR, the sensor point that applies a larger force has a lower resistance and a higher output voltage, and vice versa. By collecting the output voltage data of different sensor points and comparing them, the data logger can calculate the force point.

[0036] Specific parameters: Sensing area size: 500mmX500mm Range: 200G ~ 100KG Thickness: <0.3mm Force Repeatability Part to Part: ±20% Off resistance: >2 MΩ Response time: <5ms Working temperature: -20℃~80℃ Lifespan: > 2 million Connector: ZIF 1.0mm The pressure panel 303 is a polymer sheet, which can be deformed when locally compressed, but has a high recovery rate after deformation, good pressure resistance, and can also maintain a flat state very quickly in a long-term testing environment.

[0037] The bottom of the hollow backboard 301 and the pressure panel 303 are both provided with a through groove 304 , which runs through the two. The base 402 is located in the through groove 304 , and the front end of the base 402 is flush with the front side of the pressure panel 303 .

[0038] The through groove 304 is used to hide the base 402 to prevent the trajectory of the basketball from being affected by the base 402 .

[0039] The four-way connecting rod 601 is tilted, and the four four-way connecting rods 601 are closed downward and rearward away from one end connected to the back plate 2. The four-way connecting rods 601 distributed front and back are symmetrically arranged with respect to the vertical center line connected to the back plate 2 and the vertical center line of the main frame 1.

[0040] In use, when installing the equipment, the main frame 1 serves to support the point test backboard 3. During actual installation, as a support member, a test basketball hoop can be realized by manual shooting or an automatic shooting machine. When the basketball hits the basket 401 in the middle of the point test backboard 3, since the connecting backboard 2 and the point test backboard 3 are fixed together, the connecting backboard 2 should move relative to the main frame 1 under force. Due to the setting of the two-way test component, which includes the rubber column A504 that is difficult to be compressed, the two-way movement of the connecting backboard 2 becomes a slight vibration. For the two juxtaposed airbags A505, one of them is compressed and the other is stretched. The four airbags A505 can be used to record the air pressure changes generated by compression or stretching. Thus, the air pressure sensor 7 connected thereto can record the two-way movement data of the connecting backboard 2. When the basketball thrown by manual shooting or the shooting machine acts on the point test backboard 3, if the basketball hits the corner position of the point test backboard 3, the four-way connecting rod 601 can collect the force data at the four corners of the connecting backboard 2. When the vibration force is transmitted to the compression frequency vibration mechanism 602, the airbag B6022 included therein can send the air pressure change fluctuations to the air pressure sensor 7 for recording the pressure change data at other positions of the connecting backboard 2, which can provide data support for the edge force stability test of the later equipment. During shooting, the basket 401 will also be hit by the basketball. Generally, the basket 401 will be hit by the basketball from top to bottom. However, the actual situation is diverse. Frequent hitting of the basket 401 may cause the screws to become loose and pose risks such as falling off. Therefore, the force data of the basket 401 can be captured by the airbag C403. When the air pressure fluctuation of the airbag C403 is transmitted to the air pressure sensor 7, the pressure data of the basket 401 can be recorded. Thus, by fitting the sensor test curves of the airbag B6022 and the airbag A505, it can be determined whether the stability of the sports equipment during long-term use is qualified. Since the point test backboard 3 includes multiple thin-film pressure sensors 302, the position where the basketball hits the backboard can be recorded during shooting. By combining and analyzing the data with multiple air pressure sensors 7, different data changes and curve changes brought about by impacts at different positions can be analyzed. Thus, a more stable sports equipment can be developed by combining the data of the above air pressure sensor 7.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0042] In addition, the technical solutions between various embodiments may be combined with each other, provided that they can be implemented by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be implemented, such a combination of technical solutions shall be considered non-existent and not within the scope of protection claimed in this application.

[0043] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sports equipment stability detection device, characterized in that: The invention comprises a main frame (1), a connecting back plate (2) and a point test backboard (3), wherein the connecting back plate (2) is fixed to the back of the point test backboard (3); a test basket (4), wherein the rear end of the test basket (4) passes through the point test backboard (3) and is fixed to the connecting back plate (2); a bidirectional test component (5) and a multidirectional test component (6), wherein the bidirectional test component (5) is connected to the main frame (1) and the connecting back plate (2), and the multidirectional test component (6) is connected to the main frame (1) and the connecting back plate (2). A plurality of air pressure sensors (7) are arranged in the main frame (1), and the point test backboard (3), the test basket (4), the bidirectional test component (5) and the multidirectional test component (6) are all connected to the air pressure sensors (7); The bidirectional test assembly (5) comprises two end plates (501) and a middle plate (502), wherein the middle plate (502) is located between the two end plates (501), wherein one end plate (501) is fixed to the back surface of the connecting back plate (2), and the other end plate (501) is fixed to the main frame (1), and both sides of the middle plate (502) are hinged to the two end plates (501) by hinged ears A (503), wherein the two hinged ears A (503) are in perpendicular directions, and the connection between the end plate (501) and the middle plate (502) is Four rubber columns A (504) are provided between the middle plate (502) and the end plate (501), respectively corresponding to the four corners of the middle plate (502) and the end plate (501). Two air bags A (505) are provided between the middle plate (502) and the end plate (501). The air bags A (505) are located in the rotation direction of the hinge ear A (503). When the angle between the middle plate (502) and the end plate (501) changes, the air bags A (505) can be stretched or compressed. The air bags A (505) are connected to the air pressure sensor (7).

2. The sports equipment stability detection device according to claim 1, characterized in that: The multi-directional test assembly (6) comprises a four-way connecting rod (601) and a compression frequency vibration mechanism (602). Four four-way connecting rods (601) are provided and are divided into two upper and lower groups. One end of any four-way connecting rod (601) is hinged to an angle of the back of the connecting back plate (2). Two compression frequency vibration mechanisms (602) are provided. The two compression frequency vibration mechanisms (602) are respectively fixed to the front and rear side surfaces of the main frame (1), and one end of each of the two compression frequency vibration mechanisms is located in the main frame (1). The upper and lower four-way connecting rods (601) on one side have their ends away from the connecting back plate (2) hinged to the compression frequency vibration mechanism (602).

3. The sports equipment stability detection device according to claim 2, characterized in that: The compression frequency vibration mechanism (602) comprises two airbag shells (6021), each of which is provided with an airbag B (6022). The two airbag shells (6021) are staggered and fixed, and the cavities inside the two airbag shells are interconnected. The internal spaces of the airbags B (6022) inside the two airbag shells are interconnected. A pressure block (6023) is provided at the center of a side where the end face of the airbag shell (6021) is connected to the four-way connecting rod (601). The pressure block (6023) and the end face of the airbag shell (6021) are connected by an elastic ring (6024). The end of the four-way connecting rod (601) away from the connection back plate (2) is hinged to the pressure block (6023). The movement of the pressure block (6023) can stretch and squeeze the airbag B (6022). The air pressure sensor (7) is fixedly connected to the airbag shell (6021) and connected to the airbag B (6022).

4. The sports equipment stability detection device according to claim 1, characterized in that: The test basket (4) comprises a basket (401), a base (402) and an airbag C (403), wherein the base (402) is fixed to the basket (401), the upper end of the back side of the base (402) is hinged to the connecting back plate (2) by a hinge ear B (404), the airbag C (403) is located between the lower end of the back side of the base (402) and the connecting back plate (2), the airbag B (6022) is respectively fixed to the two, and rubber columns B (405) are provided between the four corners of the base (402) and the connecting back plate (2), the rubber columns B (405) are respectively connected to the base (402) and the connecting back plate (2), and the airbag C (403) is connected to the air pressure sensor (7).

5. The sports equipment stability detection device according to claim 4, characterized in that: The point test backboard (3) comprises a hollow backboard (301), a thin film pressure sensor (302) and a pressure panel (303). The back side of the hollow backboard (301) is fixed to the connecting backboard (2), and the pressure panel (303) is fixed to the front side of the hollow backboard (301). A cavity is present between the two. A plurality of thin film pressure sensors (302) are provided and are distributed in a matrix in the cavity. The thin film pressure sensors (302) are fixed to the rear wall of the hollow backboard (301) and are in contact with the pressure panel (303).

6. The sports equipment stability detection device according to claim 4, characterized in that: The bottoms of the hollow backboard (301) and the pressure panel (303) are both provided with a through groove (304), the through groove (304) running through the two, the base (402) being located in the through groove (304), and the front end of the base (402) being flush with the front face of the pressure panel (303).

7. The sports equipment stability detection device according to claim 2, characterized in that: The four-way connecting rod (601) is arranged obliquely, and the four four-way connecting rods (601) are closed downward and rearward at one end away from the connection back plate (2), and the four-way connecting rods (601) distributed front and back are arranged symmetrically with respect to the vertical center line connecting the back plate (2) and the vertical center line of the main frame (1).

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