Audio and video data analysis preprocessing device

Abstract

The invention provides an audio and video data analysis and preprocessing device, and relates to the technical field of audio and video data processing.The audio and video data analysis and preprocessing device comprises a case, a display screen is rotationally installed at the top of the case through a hinge shaft, cleaning boxes are fixed to the front side and the rear side of the case, heat dissipation windows are formed in the left side and the right side of the case, and an annular filter screen is slidably inserted into the case in a penetrating mode; the two sides of the annular filter screen are located on the back face of the heat dissipation window, the other two sides of the annular filter screen penetrate into the cleaning box, cleaning rollers are rotatably installed on the inner walls, located on the two sides of the annular filter screen, of the cleaning box at equal intervals, and a bottom cover is installed at the bottom of the cleaning box in a sealed mode. The heat dissipation windows enough for heat dissipation can be opened according to heat generated by equipment, dust accumulation is reduced, meanwhile, filter screens on the inner sides of the two heat dissipation windows can be alternately replaced through reciprocating rotation of the annular filter screen, the situation that the ventilation effect is affected by continuous dust accumulation is avoided, and the outdoor air conditioner is suitable for outdoor use.

Description

Technical Field

[0001] The present invention relates to the technical field of audio-visual data processing, and specifically to an audio-visual data analysis and preprocessing device. Background Art

[0002] Audio-visual data has a wide range of applications in multiple fields. For example, in the media industry, audio-visual data is used for the production and dissemination of radio and television programs. The audio-visual material library of a television station has established a huge audio-visual database through digital cataloging production to support program production and publicity. In addition, digital audio-visual also includes digital content with "sound" and "image" other than radio and television on mobile networks, broadband Internet, and cable TV networks, such as cultural commodities transmitted in ways such as downloading and on-demand. These data usually exist in the form of audio-visual carriers such as tapes, records, optical discs, and disks, and have preservation and reference value.

[0003] The identification and analysis of audio-visual data usually require the use of specialized software operations. Audio-visual data usually needs to be preprocessed to remove noise and screen features. When operating outdoors, it relies on specialized computer equipment. Since processing audio-visual data requires high-performance operation of the computer, a large amount of heat will be generated. In an outdoor environment, on the one hand, heat dissipation is inconvenient. In addition, for common laptops, the heat dissipation windows are easily blocked by dust, which affects heat dissipation and easily causes abnormal noises in the equipment, thus affecting the preprocessing of audio-visual data. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide an audio-visual data analysis and preprocessing device to solve the problems raised in the above background art. The structure of the present invention is novel. Through the cooperation of the driving component and the cleaning box, the heat dissipation windows that can dissipate enough heat can be opened according to the heat generated by the device, reducing the accumulation of dust. At the same time, the reciprocating rotation of the annular filter screen can alternately replace the filter screens on the inner sides of the two heat dissipation windows, avoiding the continuous accumulation of dust from affecting the ventilation effect, and is suitable for outdoor use.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: An audio-visual data analysis preprocessing device includes a chassis. A display screen is rotatably mounted on the top of the chassis through a hinge shaft. Cleaning boxes are fixed on the front and rear sides of the chassis, and heat dissipation windows are provided on the left and right sides of the chassis. An annular filter screen is slidably inserted into the interior of the chassis. The two sides of the annular filter screen are located on the back of the heat dissipation windows, and the other two sides of the annular filter screen penetrate into the interior of the cleaning boxes. Cleaning rollers are rotatably mounted at equal intervals on the inner walls on both sides of the annular filter screen in the cleaning boxes, and a bottom cover is hermetically mounted at the bottom of the cleaning boxes. A driving assembly is provided at the outer end of the cleaning box on the back of the chassis. The driving assembly includes a winding box. The winding box is fixed at the middle position on the back of the cleaning box, and two winding rollers are rotatably mounted in the winding box through bearings. A blocking cloth is wound around the two winding rollers of the winding box. The blocking cloth slides out of both sides of the winding box and covers the outside of the heat dissipation windows. A screw rod is rotatably mounted at the top of the cleaning box on the back of the chassis, and the screw rod is in transmission connection with the winding shaft.

[0006] Further, telescopic feet are installed at the four corners of the bottom of the chassis. A keyboard is installed on the upper surface of the chassis, and a plurality of plug interfaces sealed with sealing strips are provided on one side of the chassis where the keyboard is located.

[0007] Further, the driving assembly further includes sliding rails. Sliding rails are fixed on the outer walls at the top and bottom of the heat dissipation windows of the chassis, and a vertical plate is slidably connected inside the sliding rails. The blocking cloth is fixedly connected to the vertical plate. Second springs are fixed at the top and bottom of the vertical plate, and the other ends of the second springs are fixedly connected to the outer sides of the sliding rails.

[0008] Further, a motor is fixed at the top of the winding box, and driving gears are installed at the upper ends of the two winding rollers of the winding box. The two driving gears are meshed with each other, and the output end of the motor is fixedly connected to one of the driving gears.

[0009] Further, one end of the screw rod passing through the cleaning box is installed with a transmission belt, and a pulley of the other end of the transmission belt is fixedly connected with a shaft rod. The shaft rod is rotatably mounted on the outer surface of the cleaning box.

[0010] Further, a second bevel gear is fixed at the other end of the shaft rod, and a first bevel gear is fixed on the winding shaft of the winding box. The first bevel gear is meshed with the second bevel gear.

[0011] Further, a screw block is threadedly sleeved on the surface of the screw rod. An insertion frame is fixed at the bottom of the screw block. One side of the insertion frame is in pressing contact with one side of the upper end of the annular filter screen, and an inclined block is slidably inserted into the other side of the insertion frame.

[0012] Further, the insertion frame is provided with the same inclined plane at the position corresponding to the insertion of the inclined block. A sliding seat is arranged at the top of the inclined block, a sliding groove is arranged at the bottom of the sliding seat, and the top of the inclined block slides horizontally along the sliding groove.

[0013] Further, a cross plate is slidably inserted into the top of the sliding seat. Plugs are fixed at both ends of the cross plate. The plugs slide out through the top of both ends of the cleaning box. A first spring is fixed at the top where the plugs extend out, and the other end of the first spring is fixedly connected with the cleaning box.

[0014] Further, pressing plates are fixed at both ends of the hinge shaft of the display screen and the chassis, and the pressing plates are in pressing contact with the top of the plugs.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. After the inclined block is inserted into the insertion frame, it slides along the inclined plane of the insertion frame until the vertical surface of the inclined block cooperates with the other side of the insertion frame to squeeze and clamp the top of the annular filter screen. Subsequently, by rotating the screw, the screw block can be driven to move. The insertion frame and the inclined block clamp the annular filter screen and move around the inside of the cleaning box. During the movement, the cleaning rollers on both sides of the cleaning box are in pressing contact with the front and back sides of the annular filter screen, scraping off the dust accumulated on the annular filter screen and falling onto the bottom of the cleaning box. Then, the dust is cleaned by manually opening the bottom cover at the bottom of the cleaning box.

[0017] 2. When the display screen is flipped and opened in the present invention, the pressing plates on both sides of the hinge shaft rotate and press against the top of the plugs, causing the plugs to drive the cross plate to descend, inserting the inclined block on the sliding seat into the insertion frame. Since the insertion frame is provided with an inclined plane matching the inclined block, the inclined block slides along the inclined plane during this process and generates a displacement with the sliding seat, pressing against the top of the annular filter screen. The connection between the inclined block and the sliding seat is maintained through the sliding groove. During the horizontal movement of the insertion frame driving the inclined block, the sliding seat slides along the cross plate, maintaining the connection relationship among the plugs, the cross plate, the sliding seat, and the inclined block. After the display screen is used and retracted, the plugs pop up upward by the elastic force of the first spring. At the same time, the cross plate and the inclined block move, disengaging from the limit of the insertion frame. The top of the inclined block is connected to the sliding groove through a connecting block and a spring, and the effect of automatic reset can also be achieved.

[0018] 3. In the present invention, the driving gear is controlled by a motor to rotate, and the two driving gears are meshed, so that the blocking cloth on the two winding rollers can be wound and unwound. During winding, the vertical plate slides along the slide rail, compressing the second spring and opening the heat dissipation window. The winding range of the blocking cloth can be determined according to the temperature that needs to be dissipated by the chassis. For example, when the temperature of the chassis is generally high, the blocking cloth does not need to be completely retracted, and the heat dissipation window does not need to be completely opened, which can reduce the entry of dust. When the temperature of the chassis is relatively high, the blocking cloth is completely retracted, exposing the heat dissipation window for high-performance heat dissipation. When not in use, the heat dissipation window can be closed by the elastic force of the second spring and the blocking of the blocking cloth to prevent dust from entering the chassis.

[0019] 4. The height of the present invention during use can be adjusted by the telescopic feet at the bottom of the chassis, which is convenient for outdoor use. The jack can be used to plug in hardware such as a USB flash drive for storing audio-visual data, and analyze and preprocess it.

[0020] 5. Compared with the prior art, the present invention can open a heat dissipation window with sufficient heat dissipation according to the heat generated by the device through the cooperation of the driving component and the cleaning box, reducing the accumulation of dust. At the same time, the reciprocating rotation of the annular filter can alternately replace the filters on the inner sides of the two heat dissipation windows, avoiding the continuous accumulation of dust from affecting the ventilation effect, and is suitable for outdoor use. Description of the Drawings

[0021] Figure 1 It is a schematic diagram of the overall structure of a device for preprocessing audio-visual data analysis according to the present invention;

[0022] Figure 2 It is a schematic diagram of the bottom structure of the chassis of a device for preprocessing audio-visual data analysis according to the present invention;

[0023] Figure 3 It is a schematic diagram of the cloth baffle blocking of a device for preprocessing audio-visual data analysis according to the present invention;

[0024] Figure 4 It is a schematic diagram of the side structure of the chassis of a device for preprocessing audio-visual data analysis according to the present invention;

[0025] Figure 5 It is a schematic diagram of the gear connection structure of a device for preprocessing audio-visual data analysis according to the present invention;

[0026] Figure 6 It is a schematic diagram of the connection between the annular filter and the cleaning box of a device for preprocessing audio-visual data analysis according to the present invention;

[0027] Figure 7 It is a schematic diagram of the transmission connection between the display screen and the cleaning box of a device for preprocessing audio-visual data analysis according to the present invention;

[0028] Figure 8 It is a schematic diagram of the internal structure of the cleaning box of a device for preprocessing audio-visual data analysis according to the present invention.

[0029] In the figure: 1, chassis; 11, display screen; 12, jack; 13, keyboard; 14, telescopic feet; 15, heat dissipation window; 16, pressing plate; 2, cleaning box; 21, bottom cover; 22, cleaning roller; 23, plug board; 24, first spring; 25, cross plate; 26, sliding seat; 27, sliding groove; 28, inclined block; 29, insertion frame; 3, driving component; 31, baffle cloth; 32, slide rail; 33, second spring; 34, vertical plate; 35, winding box; 36, motor; 37, driving gear; 38, first bevel gear; 39, second bevel gear; 310, shaft rod; 311, transmission belt; 312, screw rod; 313, screw block; 4, annular filter screen. Detailed implementation manners

[0030] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0031] Please refer to Figures 1 to 8 , the present invention provides a technical solution: an audio-visual data analysis and preprocessing device, including a chassis 1, the top of the chassis 1 is rotatably installed with a display screen 11 through a hinge shaft, the front and rear sides of the chassis 1 are fixed with cleaning boxes 2, and heat dissipation windows 15 are opened on the left and right sides of the chassis 1. An annular filter screen 4 is slidably inserted into the interior of the chassis 1. The two sides of the annular filter screen 4 are located on the back of the heat dissipation window 15, and the other two sides of the annular filter screen 4 penetrate into the interior of the cleaning box 2. Cleaning rollers 22 are rotatably installed at equal intervals on the inner walls of the two sides of the cleaning box 2 where the annular filter screen 4 is located, and a bottom cover 21 is hermetically installed at the bottom of the cleaning box 2. A driving component 3 is arranged at the outer end of the cleaning box 2 on the back of the chassis 1. The driving component 3 includes a winding box 35. The winding box 35 is fixed at the middle position on the back of the cleaning box 2, and two winding rollers are rotatably installed in the winding box 35 through bearings. Baffle cloth 31 is wound on the two winding rollers of the winding box 35. The baffle cloth 31 slides out of the two sides of the winding box 35 and covers the outside of the heat dissipation window 15. A screw rod 312 is rotatably installed at the top of the cleaning box 2 on the back of the chassis 1 through a bearing, and the screw rod 312 is in transmission connection with the winding shaft. When using the device, the display screen 11 is flipped open. After connecting the hardware storing audio-visual data to the chassis 1, the audio-visual data is transmitted and analyzed and preprocessed. During the processing, the driving component 3 opens the heat dissipation window 15 to dissipate heat from the chassis 1 and clean the annular filter screen 4 on the back of the heat dissipation window 15 at the same time, maintaining good ventilation and heat dissipation effects. When not in use, the closed effect of the chassis 1 is maintained, which is convenient for carrying and outdoor use.

[0032] In this embodiment, telescopic feet 14 are installed at the four corners of the bottom of the chassis 1. A keyboard 13 is installed on the upper surface of the chassis 1. A plurality of plug interfaces 12 sealed with sealing strips are provided on one side of the chassis 1 where the keyboard 13 is located. The height during use can be adjusted through the telescopic feet 14 at the bottom of the chassis 1, which is convenient for outdoor use. The plug interfaces 12 can be used to plug in hardware such as USB flash drives for storing audio and video data for analysis and preprocessing. This technology is an existing technology. The chassis 1 is internally equipped with a digital signal processor, an acoustic processor, a reverberator, etc. for processing audio and video data.

[0033] In this embodiment, the drive assembly 3 further includes a slide rail 32. Slide rails 32 are fixed on the outer walls at the top and bottom of the heat dissipation window 15 of the chassis 1. A vertical plate 34 is slidably connected inside the slide rail 32. The baffle 31 is fixedly connected to the vertical plate 34. Second springs 33 are fixed at the top and bottom of the vertical plate 34, and the other ends of the second springs 33 are fixedly connected to the outside of the slide rail 32. A motor 36 is fixed at the top of the winding box 35, and drive gears 37 are installed at the upper ends of the two winding rollers of the winding box 35. The two drive gears 37 are meshed. The output end of the motor 36 is fixedly connected to one of the drive gears 37. The motor 36 controls the rotation of the drive gear 37, and the two drive gears 37 are meshed, so that the baffle 31 on the two winding rollers can be wound and unwound. During winding, the vertical plate 34 slides along the slide rail 32, compressing the second spring 33 to open the heat dissipation window 15. The winding range of the baffle 31 can be determined according to the temperature that needs to be dissipated by the chassis 1. For example, when the temperature of the chassis 1 is generally high, the baffle 31 does not need to be completely retracted, and the heat dissipation window 15 does not need to be completely opened, which can reduce the entry of dust. When the temperature of the chassis 1 is relatively high, the baffle 31 is completely retracted to expose the heat dissipation window 15 for high-performance heat dissipation. When not in use, the heat dissipation window 15 can be closed by the elastic force of the second spring 33 and the sealing of the baffle 31 to prevent dust from entering the interior of the chassis 1.

[0034] In this embodiment, the insertion frame 29 is provided with the same inclined surface at the position corresponding to the insertion of the inclined block 28. The top of the inclined block 28 is provided with a sliding seat 26. A sliding groove 27 is opened at the bottom of the sliding seat 26, and the top of the inclined block 28 slides horizontally along the sliding groove 27. A cross plate 25 is slidably inserted into the top of the sliding seat 26. Plugs 23 are fixed at both ends of the cross plate 25. The plugs 23 slide out of the top of both ends of the cleaning box 2. A first spring 24 is fixed at the top of the plug 23 that slides out, and the other end of the first spring 24 is fixedly connected to the cleaning box 2. Pressing plates 16 are fixed at both ends of the hinge shaft of the display screen 11 and the chassis 1, and the pressing plates 16 are in pressing contact with the top of the plug 23. When the display screen 11 is flipped open, the pressing plates 16 on both sides of the hinge shaft rotate and press the top of the plug 23, so that the plug 23 drives the cross plate 25 to descend, and the inclined block 28 on the sliding seat 26 is inserted into the insertion frame 29. Because the insertion frame 29 is provided with an inclined surface matching the inclined block 28, the inclined block 28 slides along the inclined surface during this process, and a displacement is generated with the sliding seat 26, pressing and contacting the top of the annular filter screen 4. The connection between the inclined block 28 and the sliding seat 26 is maintained through the sliding groove 27. During the process of the insertion frame 29 driving the inclined block 28 to move horizontally, the sliding seat 26 slides along the cross plate 25 to maintain the connection relationship among the plug 23, the cross plate 25, the sliding seat 26 and the inclined block 28. After the display screen 11 is used and retracted, the plug 23 pops up upward by the elastic force of the first spring 24. At the same time, the cross plate 25 and the inclined block 28 move and are disengaged from the limit of the insertion frame 29. The top of the inclined block 28 is connected to the sliding groove 27 through a connecting block and a spring, and the effect of automatic reset can also be achieved.

[0035] In this embodiment, a transmission belt 311 is installed at one end of the screw 312 passing through the cleaning box 2. A pulley at the other end of the transmission belt 311 is fixed with a shaft rod 310. The shaft rod 310 is rotatably installed on the outer surface of the cleaning box 2. A second bevel gear 39 is fixed at the other end of the shaft rod 310. A first bevel gear 38 is fixed on the winding shaft of the winding box 35, and the first bevel gear 38 is meshed with the second bevel gear 39. A screw block 313 is threadedly sleeved on the surface of the screw 312. The bottom of the screw block 313 is fixed with an insertion frame 29. One side of the insertion frame 29 is in extrusion contact with the upper side of one side of the annular filter screen 4. The other side of the insertion frame 29 is slidably inserted with an inclined block 28. After the inclined block 28 is inserted into the insertion frame 29, it slides along the inclined surface of the insertion frame 29 until the vertical surface of the inclined block 28 cooperates with the other side of the insertion frame 29 to squeeze and clamp the top of the annular filter screen 4. Subsequently, the rotation of the screw 312 can drive the movement of the screw block 313. The insertion frame 29 and the inclined block 28 clamp the annular filter screen 4 and move around the inside of the cleaning box 2. During the movement, the cleaning rollers 22 on both sides of the cleaning box 2 are in extrusion contact with the front and back sides of the annular filter screen 4, scraping off the dust accumulated on the annular filter screen 4 and falling to the bottom of the cleaning box 2. Then, the dust is cleaned by manually opening the bottom cover 21 at the bottom of the cleaning box 2. During this process, the cleaning of the annular filter screen 4 is automatically realized. At the same time, when the heat dissipation window 15 is opened for use, a clean filter screen can be replaced to face the back of the heat dissipation window 15 to maintain good ventilation and heat dissipation effects.

[0036] When using the device, flip open the display screen 11. After connecting the hardware storing audio-visual data to the chassis 1, transfer the audio-visual data and perform analysis and preprocessing. The motor 36 controls the rotation of the driving gear 37, and the two driving gears 37 mesh, enabling the winding and unwinding of the baffle cloth 31 on the two winding rollers. When winding, the vertical plate 34 slides along the slide rail 32, compressing the second spring 33, and opening the heat dissipation window 15. The winding range of the baffle cloth 31 can be determined according to the temperature that needs to be dissipated by the chassis 1. For example, when the temperature of the chassis 1 is generally high, the baffle cloth 31 does not need to be fully retracted, and the heat dissipation window 15 does not need to be fully opened, which can reduce the entry of dust. When the temperature of the chassis 1 is relatively high, the baffle cloth 31 is fully retracted, exposing the heat dissipation window 15 for high-performance heat dissipation. When not in use, the heat dissipation window 15 can be closed by the elasticity of the second spring 33 and the blocking of the baffle cloth 31 to prevent dust from entering the interior of the chassis 1. When flipping open the display screen 11, the pressing plates 16 on both sides of the hinge shaft rotate and squeeze the top of the plug board 23, causing the plug board 23 to drive the cross board 25 to descend, and inserting the inclined block 28 on the sliding seat 26 into the interior of the plug frame 29. Since the plug frame 29 is provided with an inclined surface matching the inclined block 28, during this process, the inclined block 28 slides along the inclined surface and generates a displacement with the sliding seat 26, squeezing and contacting the top of the annular filter screen 4. The connection between the inclined block 28 and the sliding seat 26 is maintained through the chute 27. During the process of the plug frame 29 driving the inclined block 28 to move horizontally, the sliding seat 26 slides along the cross board 25 to maintain the connection relationship among the plug board 23, cross board 25, sliding seat 26, and inclined block 28. After the display screen 11 is used and retracted, the plug board 23 pops up upward by the elasticity of the first spring 24. At the same time, the cross board 25 and the inclined block 28 move, disengaging from the limit of the plug frame 29. The top of the inclined block 28 is connected to the chute 27 through a connecting block and a spring, which can also achieve the effect of automatic reset. After the inclined block 28 is inserted into the interior of the plug frame 29, it slides along the inclined surface of the plug frame 29 until the vertical surface of the inclined block 28 cooperates with the other side of the plug frame 29 to squeeze and clamp the top of the annular filter screen 4. Subsequently, by rotating the screw 312, the nut block 313 can be driven to move, and the plug frame 29 and the inclined block 28 clamp the annular filter screen 4 and move around the interior of the cleaning box 2. During the movement, the cleaning rollers 22 on both sides of the cleaning box 2 squeeze and contact the front and back sides of the annular filter screen 4, scraping off the dust accumulated on the annular filter screen 4 and dropping it to the bottom of the cleaning box 2. Then, by manually opening the bottom cover 21 at the bottom of the cleaning box 2, the dust is cleaned. During this process, the annular filter screen 4 is automatically cleaned, and when the heat dissipation window 15 is opened for use, a clean filter screen can be replaced facing the back of the heat dissipation window 15 to maintain good ventilation and heat dissipation effects.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0038] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An audio-visual data analysis preprocessing device, comprising a chassis (1), characterized in that: The top of the chassis (1) is rotatably installed with a display screen (11) through a hinge shaft. Cleaning boxes (2) are fixed on the front and rear sides of the chassis (1), and heat dissipation windows (15) are provided on the left and right sides of the chassis (1). An annular filter screen (4) is slidably inserted into the chassis (1). Both sides of the annular filter screen (4) are located on the back of the heat dissipation windows (15), and the other two sides of the annular filter screen (4) penetrate into the cleaning boxes (2). Cleaning rollers (22) are rotatably installed at equal intervals on the inner walls of both sides of the cleaning boxes (2) where the annular filter screen (4) is located, and a bottom cover (21) is hermetically installed at the bottom of the cleaning boxes (2). A driving component (3) is provided at the outer end of the cleaning box (2) on the back of the chassis (1). The driving component (3) includes a winding box (35). The winding box (35) is fixed at the middle position on the back of the cleaning box (2), and two winding rollers are rotatably installed in the winding box (35) through bearings. A blocking cloth (31) is wound on the two winding rollers of the winding box (35). The blocking cloth (31) slides out of both sides of the winding box (35) and covers the outside of the heat dissipation windows (15). A screw rod (312) is rotatably installed at the top of the cleaning box (2) on the back of the chassis (1) through a bearing, and the screw rod (312) is in transmission connection with the winding shaft.

2. The audio - visual data analysis pre - processing device according to claim 1, characterized in that: Retractable feet (14) are installed at the four corners of the bottom of the chassis (1). A keyboard (13) is installed on the upper surface of the chassis (1), and a plurality of plug-in interfaces (12) sealed with sealing strips are provided on one side of the chassis (1) where the keyboard (13) is located.

3. The audio-visual data analysis preprocessing device according to claim 1, wherein: The driving component (3) further includes slide rails (32). Slide rails (32) are fixed on the outer walls of the top and bottom of the chassis (1) where the heat dissipation windows (15) are located, and a vertical plate (34) is slidably connected inside the slide rails (32). The blocking cloth (31) is fixedly connected to the vertical plate (34). Second springs (33) are fixed at the top and bottom of the vertical plate (34), and the other ends of the second springs (33) are fixedly connected to the outer sides of the slide rails (32).

4. The audio-visual data analysis preprocessing device according to claim 3, characterized in that: A motor (36) is fixed at the top of the winding box (35), and driving gears (37) are installed at the upper ends of the two winding rollers of the winding box (35). The two driving gears (37) are meshed and connected, and the output end of the motor (36) is fixedly connected to one of the driving gears (37).

5. An audio-visual data analysis preprocessing device according to claim 4, characterized in that: One end of the screw rod (312) passing through the cleaning box (2) is installed with a transmission belt (311), and a pulley at the other end of the transmission belt (311) is fixedly connected with a shaft rod (310). The shaft rod (310) is rotatably installed on the outer surface of the cleaning box (2).

6. An audio-visual data analysis preprocessing device according to claim 5, characterized in that: A second bevel gear (39) is fixed at the other end of the shaft rod (310), and a first bevel gear (38) is fixed on the winding shaft of the winding box (35), and the first bevel gear (38) is meshed and connected with the second bevel gear (39).

7. The audio-visual data analysis and preprocessing device according to claim 6, wherein: A screw block (313) is threadedly sleeved on the surface of the screw rod (312). An insertion frame (29) is fixed at the bottom of the screw block (313). One side of the insertion frame (29) is in pressing contact with one side of the upper end of the annular filter screen (4), and an inclined block (28) is slidably inserted on the other side of the insertion frame (29).

8. An audio-visual data analysis preprocessing device according to claim 7, characterized in that: The insertion frame (29) is provided with the same inclined plane at the position corresponding to the insertion of the inclined block (28). A sliding seat (26) is provided at the top of the inclined block (28). A sliding groove (27) is provided at the bottom of the sliding seat (26), and the top of the inclined block (28) slides horizontally along the sliding groove (27).

9. An audio-visual data analysis preprocessing device according to claim 8, characterized in that: A cross plate (25) is slidably inserted into the top of the sliding seat (26). Plugs (23) are fixed at both ends of the cross plate (25). The plugs (23) slide out through the top of both ends of the cleaning box (2). A first spring (24) is fixed to the top of the plug (23) that slides out, and the other end of the first spring (24) is fixedly connected to the cleaning box (2).

10. An audio-visual data analysis preprocessing device according to claim 9, characterized in that: Pressure plates (16) are fixed to both ends of the hinge shaft of the display screen (11) and the chassis (1), and the pressure plates (16) are in pressing contact with the top of the plug (23).

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