CN108109442A - A kind of subject audio-visual education programme video presenter in kind - Google Patents

Abstract

The invention discloses a physical video booth for subject audio-visual education, and mainly relates to the field of audio-visual education equipment. It includes a base, the top surface of the base is provided with a background board and a control panel, one side of the base is provided with a support arm, the top of the support arm is connected with a shooting rod, and a lens is installed on the shooting rod. The top surface of the background plate is centered with an annular base, and an arc-shaped guide rail is connected to the annular base along its circumferential rotation, and a semicircular slide rail is slidably connected to the inside of the arc-shaped guide rail, and the slide rail and the background The board is vertically arranged, and the two ends of the slide rail are symmetrically provided with a clamping mechanism, and the center of the slide rail is provided with a platform mechanism detachably connected to it. The clamping mechanism includes a telescopic rod and a clamp, and the platform mechanism Includes quick release telescoping column and platform. The beneficial effect of the invention lies in that it can fix the sample or model used for taking pictures, and can adjust the shooting area and shooting angle of the fixed object.

Description

A physical video booth for audio-visual teaching of subjects

technical field

The invention relates to the field of audio-visual education equipment, in particular to a physical video booth for subject audio-visual education.

Background technique

In the education and teaching of modern colleges and universities, computer technology and information technology have been widely used to assist teaching, and most classrooms and supporting facilities have adopted the model of electronic classrooms. Display courseware content, pictures, videos, etc. through projection, playback, etc., and cooperate with the classroom to complete the teaching process.

In the teaching of professional courses such as agriculture and medicine, in addition to courseware, pictures, videos and other content that can be directly placed or played through the computer, it is often necessary to display physical objects, models and other entities. For example, medical organ models, plant samples, ore samples, etc., the display and explanation of these entities are very necessary, and have a teaching effect that is difficult to achieve with videos and pictures. Due to the large number of students and the long distance, the physical display is generally carried out through the video booth. Exhibitors in the prior art are filmed by placement and static display. However, since samples and models (such as organ models, ore samples, etc.) are irregular in shape, they are easy to roll around and skew, and cannot show Appropriate filming area. At the same time, according to the needs of the teaching content during the display, it is often necessary to constantly adjust the real object, change the filming area and angle, so as to cooperate with the guidance and explanation. However, the existing video booths can neither fix the object nor adjust the state and angle of the object, which brings great inconvenience to the display of the object and greatly reduces the effect and efficiency of teaching.

Contents of the invention

The object of the present invention is to provide a kind of real object video booth for subject audio-visual education, which can fix the sample or model used for taking pictures, and can adjust the shooting area and shooting angle of the fixed real object, so as to realize the omnidirectional and multi-angle display of the real object, which is remarkable It improves the teaching effect and helps students fully grasp the characteristics of objects.

In order to achieve the above object, the present invention is achieved through the following technical solutions:

A real object video booth for audio-visual teaching, comprising a base, a background board and a control panel are provided on the top surface of the base, a support arm is provided on one side of the base, and a shooting rod is connected to the top of the support arm. A lens is installed on the shooting rod, and an annular base is arranged in the center of the top surface of the background plate, and an arc-shaped guide rail is connected to the annular base to rotate along its circumference, and a semicircular guide rail is slidingly connected to the inside of the arc-shaped guide rail. A slide rail, the slide rail is vertically arranged with the background plate, the two ends of the slide rail are symmetrically provided with a clamping mechanism, and the center of the slide rail is provided with a platform mechanism detachably connected to it, and the clamping mechanism includes A telescopic rod and a clamp, and the platform mechanism includes a quick-release telescopic column and a platform.

The telescopic rod includes a sleeve and an inner rod, one end of the sleeve is fixedly connected to the top of the slide rail, the inner end of the sleeve is rotatably connected to a first collar, and the sleeve is sleeved on the inner rod The outside and the two are slidably connected along the length direction, the inner rod passes through the first collar and the two are threaded, and the inner end of the inner rod is detachably connected with the clamp.

The inner end of the telescopic rod is provided with a connecting plate, and the clamp includes a connecting head, which is rotatably connected with the connecting plate, and the connecting head is fixedly connected with a hard top block, a flexible top block and a mechanical claw. The rigid jacking block, the flexible jacking block and the mechanical claws are distributed along the peripheral side of the connecting head. The rigid jacking block includes a top plate fixedly connected to the connecting head, and columnar protrusions are distributed on the top plate. The flexible jacking block includes a fixed The top column connected to the connector, the outer end of the top bead is provided with a silicone block or a rubber block, the mechanical claw includes a fixed plate fixedly connected to the connector, and the fixed plate is symmetrical away from the inner edge of the connector There are two synchronous gears that are connected to it in rotation, and there are two synchronous gears that mesh with each other. The fixed plate is also rotatably connected with a driving gear that is meshed with one of the synchronous gears. The coaxial knob of the drive gear, the V-shaped bar is fixed on the synchronous gear, the V-shaped opening of the V-shaped bar is oppositely arranged, the plate frame is fixedly connected to the V-shaped bar, and the inside of the plate frame is provided with Opposite teeth.

The connecting head includes circular splints arranged on the front and rear sides of the connection plate, connecting blocks are arranged on the sides of the circular splint, screw holes are arranged in the center of the circular splint and the connection plate, and the screw holes The hole internal thread is connected with a fixing bolt.

The center of the guide rail is provided with a screw head pointing to the axis. The quick-release telescopic column includes a sleeve and an inner column. One end of the sleeve is threaded with the screw head, and the top end of the sleeve is rotatably connected with a second The collar, the inner column is sleeved in the sleeve and the two are slidably connected along the length direction, the upper part of the inner column passes through the second collar and the two are threaded, and the platform is arranged on the top of the inner column.

The bottom end of the platform is fixed on the quick-release telescopic column, and both sides of the platform adjacent to the clamping mechanism are provided with bar-shaped holes, and the clamping mechanism is symmetrically provided with holes connected with the bar-shaped holes. A cavity, the cavity is provided with a fixed shaft, the fixed shaft is sleeved with an I-shaped reel that fits with the gap, and a rewinding coil spring is installed between the reel and the fixed shaft. A pull-out net is wound on the cylinder, and the outside of the pull-out net passes through a strip-shaped hole, and a bar-shaped frame is fixed on the outside of the pull-out net, and a plurality of hanging rings are distributed on the bar-shaped frame, and the hanging ring and the Grabbing teeth are used together.

The base is a circular base, and the base is rotatably connected with a strip-shaped base plate along its circumference, the outside of the base plate is hinged with the bottom side of the support arm, and the top of the support arm is hinged with the shooting rod.

Compared with the prior art, the beneficial effects of the present invention are:

The video booth can clamp and fix the real object to be displayed through the oppositely arranged fixtures, and the telescopic rod can adjust the distance between the two fixtures, which is convenient for adapting to real objects of different sizes and shapes, and achieves better fixation. If the object is heavy, soft, fragile, and needs to be lightly clamped, the quick-release telescopic column can be installed on the slide rail, and the object can be lifted through the platform, and the clamps on both sides can be used to fix the object. The quick-release telescopic column is convenient for adjusting the lifting height, and also has greater adaptability to the shape of the object and the lifting requirements. Through the clamping mechanism and the platform mechanism, it is possible to fix the sample and the model, conveniently fix it at an appropriate angle, and display the expected filming area in a better and fixed manner, which solves the problem of irregular shape of the object. It is unstable and rolls around, and the display part is difficult to fix.

At the same time, after the object is fixed, through the semicircular slide rail, it can swing in an arc shape on the vertical plane with the cooperation of the arc guide rail, and can also rotate on the horizontal plane through the ring base. On the one hand, it is convenient and fast. Adjusting the setting area is convenient for students to fully understand the model and samples. On the other hand, it can flexibly adjust the shooting angle of the shooting area to provide different observation angles, which is convenient for students to fully grasp and understand the characteristics of the object (this is true in ore samples, plant samples, etc.) Especially important in the display of samples).

The clamp can be disassembled and replaced, and is equipped with various clamp structures. For example, the hard top block is convenient to clamp the real object from both sides, and it is convenient to fix most of the models and hard samples, and the fixation is firm. The flexible top block can better protect objects while clamping. The mechanical claws can significantly improve the effect of grasping and fixing samples. For samples with irregular shape and slippery characteristics such as ore samples, the use of mechanical claws can have a stable fixing effect.

In addition, if you encounter samples with loose texture or poor shape, such as herbal plant samples, you can pull out the bar racks on both sides of the platform and hang the hanging rings on the mechanical claws on both sides to form a Net bag, put the object in the net bag.

Description of drawings

Accompanying drawing 1 is the use schematic diagram of the present invention.

Accompanying drawing 2 is the structural representation of the present invention.

Accompanying drawing 3 is the schematic top view of the present invention.

Accompanying drawing 4 is the partial structure diagram of the clamping mechanism of the present invention.

Accompanying drawing 5 is the partial mechanism diagram of the clamp part of the present invention.

Accompanying drawing 6 is a schematic diagram of the internal structure of the platform of the present invention.

Accompanying drawing 7 is the schematic diagram of connection plate and connection block of the present invention.

Accompanying drawing 8 is the schematic diagram of platform mechanism of the present invention.

Labels shown in the accompanying drawings:

1. Base; 2. Support arm; 3. Shooting rod; 4. Ring base; 5. Arc guide rail; 6. Slide rail; 7. Telescopic rod; 8. Clamp; 11. Sleeve; 12. Inner rod; 13. First collar; 14. Connecting disc; 15. Connecting head; 16. Rigid top block; 17. Flexible top block; , synchronous gear; 21, driving gear; 22, V-shaped rod; 23, plate frame; 24, circular splint; 25, connecting block; 26, screw head; Collar; 30, fixed shaft; 31, reel; 32, pull net; 33, strip frame; 34, rotating shaft; 35, lower gear; 36, wheel disc; 37, special-shaped rod.

Detailed ways

Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined in the present application.

The present invention is a physical video booth for subject audio-visual education. The main structure includes a base 1 for support and fixing. The top surface of the base 1 is provided with a background board and a control panel. The background board is a white Bottom plate, one side of the base 1 is provided with a support arm 2, the top of the support arm 2 is connected with a shooting rod 3, the shooting rod 3 is equipped with a lens, and the top surface of the background plate is centered with a ring The base 4 is connected with an arc-shaped guide rail 5 rotating along its circumferential direction. The arc-shaped guide rail 5 is arc-shaped with a radian of 15-30 degrees, and the center of the circle is located above the center of the circle of the annular base 4 upwards. The plane where the arc guide rail 5 is located is vertically arranged, and a semicircular slide rail 6 is slidably connected in the arc guide rail 5, and the slide rail 6 is vertically arranged with the background plate, and the slide rail 6 can be arranged along the The arc-shaped guide rail 5 swings back and forth along an arc on the vertical plane, and the two ends of the slide rail 6 are symmetrically provided with clamping mechanisms, and the center of the slide rail 6 is provided with a platform mechanism detachably connected thereto. The clamping mechanism includes a telescopic rod 7 and clamps 8. The clamps 8 are on both sides to clamp the object in the middle. The telescopic rod 7 can adjust the distance between the clamps 8, thereby moving the object from the left and right sides of the object. The top is tight, so that the clamping is stable, and it can adapt to objects of different sizes. The platform mechanism includes a quick release telescopic column 9 and a platform 10 . It can be used selectively. It can be used when the clamping mechanism can be clamped firmly. However, many models, especially samples, cannot be clamped forcefully, or the surface is smooth and heavy, so it is difficult to clamp. Use this The platform mechanism can hold up the object at the bottom. Similarly, the height of the support is adjustable, which is convenient for adapting to different needs.

In order to facilitate adjustment and fixing, the telescopic rod 7 includes a sleeve 11 and an inner rod 12. One end of the sleeve 11 is fixedly connected to the top end of the slide rail 6, and the inner end of the sleeve 11 is rotatably connected to a first set of The ring 13, the sleeve 11 is sleeved on the outside of the inner rod 12, the two are slidably connected along the length direction, and are limited in the circumferential direction. The structure of the chute slider can be used to realize the rotation limit, so that the inner rod 12 It can only slide along the casing 11 , the inner rod 12 passes through the first collar 13 and the two are threaded, and the inner end of the inner rod 12 is detachably connected with the clamp 8 . Rotating the first collar 13 during use can adjust the degree of unscrewing of the inner rod 12 and control the position of the clamp 8 .

The inner end of the telescoping rod 7 is provided with a connecting plate 14, and the clamp 8 includes a connecting head 15, which is rotatably connected with the connecting plate 14, and the connecting head 15 is fixedly connected with a rigid top block 16, a flexible The top block 17 and the mechanical claw 18, the hard top block 16, the flexible top block 17 and the mechanical claw 18 are distributed along the peripheral side of the connector 15, and the hard top block 16 is convenient for clamping the real object from both sides. It is convenient to fix most models and hard samples, and the fixation is firm. The rigid top block 16 includes a top plate that is fixedly connected to the connector 15, and columnar protrusions are distributed on the top plate, and the flexible top block 17 includes a top column that is fixedly connected to the connector 15. The end is provided with a silica gel block or a rubber block, and the contact point is soft and flexible, so that the flexible top block 17 can better protect the real object while clamping. The mechanical claw 18 includes a fixed plate 19 fixedly connected to the connector 15, and the fixed plate 19 is symmetrically provided with a synchronous gear 20 rotationally connected to the inner edge of the connector 15, and the synchronous gear 20 is two and meshed, the fixed plate 19 is also rotatably connected with a driving gear 21 meshed with one of the synchronous gears 20, the fixed plate 19 is also provided with a knob coaxial with the driving gear 21, and the rotation of the knob can control The opening and closing angles of the two V-shaped bars 22. A V-shaped bar 22 is fixed on the synchronous gear 20, so as to realize inward opening and closing. The V-shaped opening of the V-shaped bar 22 is relatively arranged, and a plate frame 23 is fixedly connected to the V-shaped bar 22. The plate frame 23 greatly increases the grabbing area and increases the fixing effect. The inner side of the plate frame 23 is provided with relative gripping teeth. For samples with irregular shapes and slippery characteristics such as ore samples, the mechanical claws 18 can significantly improve the effect of grasping and fixing the samples.

In order to facilitate the replacement, maintenance, and adjustment of the clamp 8 used, the connecting head 15 includes circular splints 24 arranged on the front and rear sides of the connecting plate 14, and the sides of the circular splint 24 are provided with connecting blocks 25. Both the circular splint 24 and the connection plate 14 are centered with screw holes, and the screw holes are internally threaded with fixing bolts. By loosening the fixing bolt, the connecting head 15 can be quickly removed, thereby adjusting the clamp 8 used, or the rotation angle of the connecting head 15 relative to the connecting plate 14 .

In order to facilitate disassembly, the center of the guide rail is provided with a screw head 26 pointing to the axis, and the quick release telescopic column 9 includes a sleeve 27 and an inner column 28, and one end of the sleeve 27 is threadedly connected with the screw head 26, which can It is convenient and fast to disassemble and assemble, and it is firmly fixed. The top end of the sleeve 27 is rotatably connected with a second collar 29, the inner column 28 is sleeved in the sleeve 27, and the inner column 28 is slidably connected with the sleeve 27 in the length direction. The sliding connection used The structure can be selected from various common linear sliding connection structures. The upper part of the inner column 28 passes through the second collar 29 and the two are screwed together, and the platform 10 is disposed on the top end of the inner column 28 . Turning the second collar 29 can adjust the lifting height of the inner column 28 , thereby adjusting the height of the platform 10 .

If you encounter samples with loose texture or poor shape, such as herbal plant samples, it is difficult to fix them only by clamping or holding them up, and the samples will easily fall apart. The bottom end of the platform 10 is fixed on the quick-release telescopic column 9, and both sides of the platform 10 adjacent to the clamping mechanism are provided with strip-shaped holes, and the clamping mechanism is symmetrically provided with strip-shaped holes. A cavity connected to each other, the cavity is provided with a fixed shaft 30, the fixed shaft 30 is sleeved with an I-shaped reel 31 that fits with the gap, and the reel 31 is installed between the fixed shaft 30 Rewinding coil spring, the reel 31 is wound with a draw net 32, the outside of the draw net 32 passes through the bar-shaped hole, and the outside of the draw net 32 is fixed with a bar frame 33, the bar frame 33 is distributed with a plurality of hanging rings, and the said hanging rings are used in conjunction with the catching teeth. The bar frame 33 on both sides of the platform 10 can be pulled out, and the hanging ring is hung on the mechanical claws 18 on both sides, thereby forming a net pocket, and the real object is pocketed in the net pocket.

The base 1 is a circular base 1, and the base 1 is connected with a strip-shaped base plate along its circumference, the outside of the base plate is hinged with the bottom side of the support arm 2, and the top of the support arm 2 is connected with the shooting rod. 3 hinged. Therefore, the shooting position can be rotated and adjusted 1360 degrees along the base, which greatly improves the shooting position. Combined with the fixation of samples and models and the adjustment of position and angle, this device can display the characteristics of the real object in multiple directions, and greatly improve the teaching quality. The effect helps students quickly and comprehensively grasp the characteristics of the object.

Embodiment: a physical video booth for subject audio-visual education, the main structure includes a base 1, the top surface of the base 1 is provided with a background board and a control panel, the base 1 is a disc-shaped base 1, and the base 1 is along the Its peripheral side is rotatably connected with a strip-shaped base plate, the outside of the base plate is hinged with the bottom side of the support arm 2 , and the top of the support arm 2 is hinged with the shooting rod 3 . A lens is installed on the shooting rod 3 .

The top surface of the background plate is centered with an annular base 4, and a thrust bearing is installed on the annular base 4, and an arc-shaped guide rail 5 is fixed on the thrust bearing, and the arc-shaped guide rail 5 has an arc of 20 degrees. And the arc-shaped guide rail 5 structure whose center of circle coincides with the center of the ring-shaped base 4 in the vertical direction upwards, a semicircular slide rail 6 is slidably connected to the inside of the arc-shaped guide rail 5, and the slide rail 6 is vertically arranged with the background plate, The part of the slide rail 6 exposed to the outside of the arc guide rail 5 is provided with an arc rack along its arc direction, and the arc of the arc rack corresponds to the arc of the slide rail 6, and the arc guide rail 5 can be The rotating shaft 34 is installed with a lower gear 35 meshing with the arc-shaped rack. The rotating shaft 34 is provided with a wheel 36, which is convenient for people to move and control the rotating shaft 34. Rotation, thereby controlling the rotation of the gear and then realizing the adjustment of the swing angle of the slide rail 6. Thereby the person presses the upper half of the thrust bearing with one hand, and at the same time stirs the wheel 36 with the thumb, and can adjust the horizontal rotation of the arc-shaped guide rail 5 and the swing of the slide rail 6 conveniently with one hand at the same time, which is very convenient .

Both ends of the slide rail 6 are symmetrically provided with clamping mechanisms, and the center of the slide rail 6 is provided with a platform mechanism detachably connected thereto.

The clamping mechanism includes a telescopic rod 7 and a clamp 8. The telescopic rod 7 includes a sleeve 11 and an inner rod 12. One end of the sleeve 11 is fixedly connected to the top end of the slide rail 6. The inner portion of the sleeve 11 The end is rotatably connected with a first collar 13, the sleeve 11 is sleeved on the outside of the inner rod 12, the side wall of the inner rod 12 is provided with a linear chute along its length direction, and the inner wall of the sleeve 11 There is a sliding bar slidingly connected with the chute, and the two cooperate to make the sliding connection between the casing 11 and the inner rod 12, and the inner rod 12 passes through the first collar 13 and the two are threaded. The inner end of the telescoping rod 7 is provided with a connecting plate 14, and the clamp 8 includes a connecting head 15, which is rotatably connected with the connecting plate 14, and the connecting head 15 includes two front and rear sides arranged on the connecting plate 14. Circular clamping plate 24, the side of described circular clamping plate 24 is provided with connecting block 25, and described circular clamping plate 24 and connecting plate 14 are both centered with screw hole, and described screw hole internal thread is connected with fixing bolt. The connecting head 15 is fixedly connected with a hard top block 16, a flexible top block 17 and a mechanical claw 18, and the hard top block 16, the flexible top block 17 and the mechanical claw 18 are distributed along the peripheral side of the connecting head 15. The top block 16 includes a top plate fixedly connected to the connector 15, and columnar protrusions are distributed on the top plate, and the flexible top block 17 includes a top column fixedly connected to the connector 15, and the outer end of the top ball is provided with The rubber block, the mechanical claw 18 includes a fixed plate 19 fixedly connected to the connector 15, and the fixed plate 19 is symmetrically provided with a synchronous gear 20 that is rotationally connected to the inner edge of the connector 15, and the synchronous gear 20 are two and meshed. The fixed plate 19 is also rotatably connected with a driving gear 21 meshed with one of the synchronous gears 20. The fixed plate 19 is also provided with a knob coaxial with the driving gear 21. The aforementioned knob provides easy control over the angle of the grab opening and closing. A rubber friction ring is arranged on the bottom surface of the knob, and the rubber friction ring is in contact with the surface of the fixing plate 19 to improve the friction force. Ability to fix the grip at an adjusted angle. A V-shaped bar 22 is fixed on the synchronous gear 20, and the V-shaped openings of the V-shaped bar 22 are arranged oppositely. claw teeth.

The platform mechanism includes a quick release telescopic column 9 and a platform 10 . The center of the guide rail is provided with a screw head 26 pointing to the axis. The quick release telescopic column 9 includes a sleeve 27 and an inner column 28. One end of the sleeve 27 is threaded with the screw head 26. The sleeve 27 The top of the top is rotatably connected with a second collar 29, the inner column 28 is sleeved in the sleeve 27, and the inner column 28 is provided with a special-shaped groove opening on the bottom surface along the length direction, and the bottom surface in the sleeve 27 A special-shaped rod 37 adapted to the special-shaped groove is arranged on the top, and the special-shaped groove and the special-shaped rod 37 cooperate to make the inner column 28 and the sleeve 27 slidably connected and unable to rotate. The upper part of the inner column 28 passes through the second collar 29 and the two are screwed together, and the platform 10 is disposed on the top end of the inner column 28 . The bottom end of the platform 10 is fixed on the quick-release telescopic column 9, and both sides of the platform 10 adjacent to the clamping mechanism are provided with strip-shaped holes, and the clamping mechanism is symmetrically provided with strip-shaped holes. A cavity connected to each other, the cavity is provided with a fixed shaft 30, the fixed shaft 30 is sleeved with an I-shaped reel 31 that fits with the gap, and the reel 31 is installed between the fixed shaft 30 Rewinding coil spring, the reel 31 is wound with a draw net 32, the outside of the draw net 32 passes through the bar-shaped hole, and the outside of the draw net 32 is fixed with a bar frame 33, the bar frame 33 is distributed with a plurality of hanging rings, and the said hanging rings are used in conjunction with the catching teeth.

Claims (7)

1. A subject video booth for audio-visual education, comprising a base, the top surface of the base is provided with a background board and a control panel, one side of the base is provided with a support arm, and the top of the support arm is connected with a shooting rod, A lens is installed on the shooting rod, and it is characterized in that: the top surface of the background plate is centered with an annular base, and an arc-shaped guide rail is connected to the annular base to rotate along its circumference, and the arc-shaped guide rail slides A semicircular slide rail is connected, and the two ends of the slide rail are symmetrically provided with a clamping mechanism, and the center of the slide rail is provided with a platform mechanism detachably connected to it, and the clamping mechanism includes a telescopic rod and a clamp , the platform mechanism includes a quick-release telescopic column and a platform. 2. A physical video booth for audio-visual teaching according to claim 1, characterized in that: the telescopic rod includes a sleeve and an inner rod, one end of the sleeve is fixedly connected to the top of the slide rail, and the sleeve The inner end of the inner end is rotatably connected with a first collar, the sleeve is sleeved on the outside of the inner rod and the two are slidably connected, the inner rod passes through the first collar and the two are threaded, the inner end of the inner rod Removable connection with the clamp. 3. According to claim 1, a physical object video booth for subject audio-visual education is characterized in that: the inner end of the telescopic rod is provided with a connecting plate, and the clamp includes a connecting head, and the connecting head is rotatably connected with the connecting plate. The connecting head is fixedly connected with a hard jacking block, a flexible jacking block and mechanical claws, and the hard jacking block, flexible jacking block and mechanical claws are distributed along the peripheral side of the connecting head. There are columnar protrusions distributed on the top plate, the flexible top block includes a top column fixedly connected to the connector, the outer end of the top bead is provided with a silica gel block or a rubber block, and the mechanical claw includes a fixed The fixed plate connected to the connecting head, the inner edge of the fixed plate away from the connecting head is symmetrically provided with synchronous gears rotationally connected with it, the synchronous gears are two and meshed, and the fixed plate is also rotatably connected There is a driving gear meshed with one of the synchronous gears, and a knob coaxial with the driving gear is arranged on the fixed plate, a V-shaped bar is fixed on the said synchronous gear, and the V-shaped openings of the V-shaped bar are oppositely arranged , the V-shaped bar is fixedly connected with a plate frame, and the inner side of the plate frame is provided with relative gripping teeth. 4. According to claim 3, a physical video booth for subject audio-visual education is characterized in that: the connector includes circular splints arranged on the front and rear sides of the connection plate, and connecting blocks are arranged on the sides of the circular splint , Both the circular splint and the connection plate are centered with screw holes, and the screw holes are internally threaded with fixing bolts. 5. According to claim 1, a physical video booth for subject audio-visual education is characterized in that: the center of the guide rail is provided with a screw head pointing to the axis, and the quick-release telescopic column includes a sleeve and an inner column. One end of the sleeve is threaded with the screw head, the top of the sleeve is rotatably connected with a second collar, the inner column is sleeved in the sleeve and the two are slidably connected, and the upper part of the inner column passes through the second collar. The ring and the two are screwed together, and the platform is arranged on the top of the inner column. 6. According to claim 3, a physical video booth for subject audio-visual education is characterized in that: the bottom end of the platform is fixed on the quick-release telescopic column, and both sides of the platform adjacent to the clamping mechanism are provided with A strip-shaped hole, a cavity connected to the strip-shaped hole is symmetrically provided in the clamping mechanism, a fixed shaft is provided in the cavity, and an I-shaped roll that fits with the gap is sleeved on the fixed shaft There is a rewinding coil spring installed between the reel and the fixed shaft, and a pulling net is wound on the reel. shaped frame, a plurality of hanging rings are distributed on the strip frame, and the hanging rings are used in conjunction with the grabbing teeth. 7. A physical video booth for audio-visual teaching according to claim 1, characterized in that: the base is a circular base, and the base is connected with a strip-shaped bottom plate along its circumference, and the outside of the bottom plate is connected to the The bottom side of the support arm is hinged, and the top end of the support arm is hinged with the shooting rod.