CN209804061U - Middle school biology teaching experiment device - Google Patents

Abstract

The utility model discloses a middle school biology teaching experiment device relates to teaching experiment device technical field, and it includes the observation box, the last fixed surface of observation box is connected with two dead levers, and the opposite face of two dead levers respectively with the left and right sides face fixed connection of motor fuselage, the first gear of output shaft fixedly connected with of motor, first gear and second gear meshing, the first rotary device of lower fixed surface of second gear is connected with. This middle school biology teaching experimental apparatus, regulation camera that can be convenient shoot the angle to make the student more directly perceived comprehensive observe the habit of living beings and its reaction condition, thereby ensured teaching efficiency.

Description

Middle school biology teaching experiment device

Technical Field

the utility model relates to a teaching experiment technical field specifically is a biological teaching experimental apparatus of middle school.

Background

biology, biology for short, is one of six basic disciplines of natural science. The structure, function, occurrence and development of organisms are researched. And the relationship between living things and the surrounding environment. Biology originated from Bo-biol, and entered the period of system biology through experimental biology and molecular biology.

In the biological teaching's of middle school student process, need observe biological living environment and life habit, traditional teaching experimental apparatus is usually put the biology in the observation box, then applys external environment, observes biological habit and its to external irritative reaction condition, and the biological habit of demonstration that traditional teaching experimental apparatus can not be fine for the student can not be comprehensive effectual observes biological condition, has reduced teaching efficiency.

SUMMERY OF THE UTILITY MODEL

technical problem to be solved

Not enough to prior art, the utility model provides a biological teaching experimental apparatus of middle school has solved the biological habit that exhibits that traditional teaching experimental apparatus can not be fine for the student can not comprehensive effectual observation biological condition, has reduced the problem of teaching efficiency.

(II) technical scheme

in order to achieve the above purpose, the utility model adopts the technical proposal that: a middle school biology teaching experiment device comprises a cube-shaped observation box, wherein two fixed rods are fixedly connected to the upper surface of the observation box, opposite surfaces of the two fixed rods are fixedly connected with the left side surface and the right side surface of a motor body respectively, an output shaft of a motor is fixedly connected with a first gear, the first gear is meshed with a second gear, the lower surface of the second gear is fixedly connected with a first rotating device, the first rotating device is clamped on the upper surface of the observation box, the bottom end of the first rotating device is fixedly connected with a turntable, the lower surface of the turntable is hinged to a U-shaped plate through a second rotating device, and the lower surface of the U-shaped plate is fixedly connected with a mounting plate; the rotary table is positioned in the observation box;

The upper surface of the mounting plate is in lap joint with the bottom end of the first pulley, the top end of the first pulley is fixedly connected with a first movable plate, the upper surface of the first movable plate is fixedly connected with the lower surface of the rotary table through a telescopic device, the upper surface of the mounting plate is also in lap joint with the bottom end of the second pulley, the top end of the second pulley is fixedly connected with a second movable plate, the upper surface of the second movable plate is fixedly connected with the lower surface of the rotary table through an electric push rod, the first pulley and the second pulley are respectively positioned on the left side and the right side of the rotary table, and the lower surface of the mounting plate is provided with a camera;

A transparent glass plate is arranged below the camera and fixed in the observation box, a lighting lamp is arranged on the lower surface of the transparent glass plate, a first through hole is formed in the right side surface of the observation box, a cover plate is arranged on the right side of the first through hole, the left side surface of the cover plate is in lap joint with the right side surface of the observation box, the front surface of the cover plate is hinged with the right side surface of the observation box through a hinge, a first handle is arranged on the right side surface of the cover plate, two connecting plates are fixedly connected to the back surface of the cover plate, third through holes are formed in the upper surfaces of the two connecting plates, a fixed plate is fixedly connected to the right side surface of the observation box and positioned between the two connecting plates and parallel to the two connecting plates, a second through hole is formed in the position of the fixed plate corresponding to the third through hole, and the circle centers of the second through hole and the, the clamping rods can be vertically inserted into the second through holes and the two third through holes, so that the cover plate and the observation box are relatively fixed; the upper surface of the clamping rod is provided with a second handle; still include the display screen, the display screen is fixed in the observation box top through two installation poles.

Further, first rotary device includes first pivot, the top and the bottom of first pivot respectively with the lower surface of second gear and the last fixed surface of carousel be connected, and the outer wall of first pivot is provided with first bearing, first bearing joint is at the upper surface of observation box.

Further, the second rotating device comprises a second bearing, the upper surface of the second bearing is fixedly connected with the lower surface of the turntable, a second rotating shaft is sleeved on the inner wall of the second bearing, two ends of the second rotating shaft are movably connected with the U-shaped plate through the second bearing, and the second bearing is fixed on the U-shaped plate.

Further, the telescoping device includes the telescopic link, the spring has been cup jointed to the telescopic link outer wall, the both ends of spring and telescopic link are connected with the lower surface of carousel and the upper surface fixed connection of first fly leaf respectively.

Furthermore, a power supply, a first switch, a second switch, a third switch, a fourth switch, a fifth switch and a sixth switch are arranged on the left side face of the observation box, and the output end of the power supply is electrically connected with the input ends of the first switch, the second switch, the third switch, the fourth switch, the fifth switch and the sixth switch through wires.

Further, the output of first switch passes through the wire and is connected with the output electricity of motor, the output of second switch passes through the wire and is connected with electric putter's input electricity, the output of third switch passes through the wire and is connected with the input electricity of light, the output of fourth switch passes through the wire and is connected with the input electricity of dry humidity controller, the output of fifth switch passes through the wire and is connected with the input electricity of camera, the output of sixth switch passes through the wire and is connected with the input electricity of display screen, the input of display screen passes through the wire and is connected with the output electricity of camera.

(III) advantageous effects

The beneficial effects of the utility model reside in that:

1. The output shaft of the motor drives the first gear to rotate, the first gear drives the second gear to rotate, so that the first rotating shaft drives the rotating disc to rotate, the mounting plate drives the camera to rotate, the camera rotates to a proper position, a user enables the electric push rod to extend by operating the second switch, the second movable plate drives the second pulley to move downwards, the left side of the mounting plate rotates downwards, the spring and the telescopic rod are shortened, the camera rotates rightwards, or the user enables the electric push rod to shorten by operating the second switch, the second movable plate drives the second pulley to move upwards, the first movable plate moves downwards under the action of spring elasticity, the first pulley moves downwards and extrudes the mounting plate, the camera rotates leftwards, the camera rotates to a proper angle, and the camera shoots organisms, and the image of shooing shows on the display screen, has realized shooting the regulation of angle and the demonstration of shooting content to the camera, and the student can be more directly perceived comprehensive observes the habits and the reaction conditions of living beings to teaching efficiency has been ensured.

2. the cover plate is pulled through the first handle, so that the cover plate is in contact with the observation box, the clamping rod is held through the second handle, the clamping rod penetrates through the second through hole and the two third through holes, the cover plate is fixed, and the situation that the living beings are stimulated to impact the cover plate to escape from the observation box is avoided.

3. the output shaft of motor takes first gear to rotate, and first gear area second gear rotates to make first pivot take the carousel to rotate, thereby realized the transmission between motor and the first pivot, and reduced the transmission speed between motor and the first pivot, thereby make the rotation of camera more steady.

drawings

fig. 1 is a schematic front view of a cross-sectional structure of the present invention;

FIG. 2 is an enlarged schematic view of part A of the present invention;

FIG. 3 is a schematic structural diagram of the right side view of the observation box of the present invention;

FIG. 4 is an enlarged sectional view of the part B of the present invention;

fig. 5 is a schematic top view of the clamping rod inserted into the connecting plate and the fixing plate.

In the figure: 1 observation box, 2 fixed rods, 3 motors, 4 first gears, 5 second gears, 6 first rotating devices, 61 first rotating shafts, 62 first bearings, 7 turntables, 8 second rotating devices, 81 second bearings, 82 second rotating shafts, 9U-shaped plates, 10 mounting plates, 11 first pulleys, 12 first movable plates, 13 telescopic devices, 131 telescopic rods, 132 springs, 14 second pulleys, 15 second movable plates, 16 electric push rods and 17 cameras, 18 transparent glass plates, 19 lighting lamps, 20 humidity controllers, 21 first through holes, 22 cover plates, 23 hinges, 24 first handles, 25 fixing plates, 26 second through holes, 27 connecting plates, 28 third through holes, 29 clamping rods, 30 second handles, 31 installation rods, 32 display screens, 33 power supplies, 34 first switches, 35 second switches, 36 third switches, 37 fourth switches, 38 fifth switches and 39 sixth switches.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-5, the utility model provides a technical solution: a middle school biology teaching experimental device comprises an observation box 1, wherein two fixed rods 2 are fixedly connected to the upper surface of the observation box 1, opposite surfaces of the two fixed rods 2 are respectively fixedly connected with the left side surface and the right side surface of a motor 3 body, the motor 3 body is fixed by arranging the fixed rods 2, the rotation of the motor 3 body is prevented, an output shaft of the motor 3 is fixedly connected with a first gear 4, through the combined action of the motor 3 and a turntable 7, the output shaft of the motor 3 drives the first gear 4 to rotate, the first gear 4 drives a second gear 5 to rotate, so that a first rotating shaft 61 drives the turntable 7 to rotate, a mounting plate 10 drives a camera 17 to rotate, the camera 17 rotates to a proper direction, power is provided for the rotation of the camera 17, the direction adjustment of the camera 17 is realized, the first gear 4 is meshed with the second gear 5, through the first gear 4 and the second gear 5, the output shaft of the motor 3 drives the first gear 4 to rotate, the first gear 4 drives the second gear 5 to rotate, so that the first rotating shaft 61 drives the rotating disc 7 to rotate, transmission between the motor 3 and the first rotating shaft 61 is realized, and transmission speed between the motor 3 and the first rotating shaft 61 is reduced, so that the rotation of the camera 17 is more stable, the lower surface of the second gear 5 is fixedly connected with the first rotating device 6, the first rotating device 6 is connected to the upper surface of the observation box 1 in a clamping manner, the bottom end of the first rotating device 6 is fixedly connected with the rotating disc 7, the first rotating device 6 comprises the first rotating shaft 61, the top end and the bottom end of the first rotating shaft 61 are respectively fixedly connected with the lower surface of the second gear 5 and the upper surface of the rotating disc 7, the outer wall of the first rotating shaft 61 is provided with the first bearing 62, through the arrangement of the first rotating shaft 61 and the first bearing 62, thereby make the rotation of carousel 7 more steady, first bearing 62 joint is at the upper surface of observation box 1, the lower surface of carousel 7 and the upper surface fixed connection of second rotating device 8, the inner wall of second rotating device 8 joint at U-shaped board 9, second rotating device 8 includes second bearing 81, the upper surface of second bearing 81 and the lower fixed surface connection of carousel 7, and second bearing 81's inner wall has cup jointed second pivot 82, through setting up second bearing 81 and second pivot 82, thereby the rotation of mounting panel 10 has been realized, thereby the rotation of camera 17 angle has been made things convenient for, the positive one end of second pivot 82 and the one end at the back respectively with the front and the back fixed connection of U-shaped board 9 inner wall, the lower fixed surface connection of U-shaped board 9 has mounting panel 10.

the upper surface of the mounting plate 10 is lapped with the bottom end of the first pulley 11, by arranging the first pulley 11, when the first pulley 11 extrudes the mounting plate 10, the first pulley 11 rotates, so that the friction force between the first pulley 11 and the mounting plate 10 is reduced, the service life of the mounting plate 10 is ensured, the top end of the first pulley 11 is fixedly connected with the first movable plate 12, the upper surface of the first movable plate 12 is fixedly connected with the lower surface of the turntable 7 through the expansion device 13, the expansion device 13 comprises the expansion link 131, by arranging the expansion link 131, the first movable plate 12 drives the first pulley 11 to ascend and descend more stably, the outer wall of the expansion link 131 is sleeved with the spring 132, two ends of the spring 132 and the expansion link 131 are respectively fixedly connected with the lower surface of the turntable 7 and the upper surface of the first movable plate 12, and the upper surface of the mounting plate 10 is lapped with the bottom end of the second pulley, by arranging the second pulley 14, when the second pulley 14 presses the mounting plate 10, the second pulley 14 rotates, so that the friction force between the second pulley 14 and the mounting plate 10 is reduced, and the service life of the mounting plate 10 is ensured, the top end of the second pulley 14 is fixedly connected with the second movable plate 15, the upper surface of the second movable plate 15 is fixedly connected with the lower surface of the rotary table 7 through the electric push rod 16, through the combined action of the electric push rod 16 and the spring 132, a user extends the electric push rod 16 through operating the second switch 35, so that the second movable plate 15 drives the second pulley 14 to move downwards, the left side of the mounting plate 10 rotates downwards, the spring 132 and the telescopic rod 131 shorten, so that the camera 17 rotates, or the user drives the electric push rod 16 to shorten through operating the second switch 35, so that the second movable plate 15 drives the second pulley 14 to move upwards, first fly leaf 12 downstream under the effect of spring 132 elasticity for first pulley 11 downstream and extrusion mounting panel 10, thereby make camera 17 rotate, make camera 17 rotate to suitable angle, camera 17 shoots the organism, and the image of shooing shows on display screen 32, thereby realized shooting the regulation of angle to camera 17, thereby make the student more directly perceived comprehensive observe the habit and the reaction condition of organism, the lower surface of mounting panel 10 is provided with camera 17.

The inner wall of the observation box 1 is provided with a transparent glass plate 18, the protection of the camera 17 is realized by arranging the transparent glass plate 18, so that the shielding of water mist on the camera 17 when the humidity degree of the observation box 1 changes is avoided, the shooting quality is ensured, the lower surface of the transparent glass plate 18 is provided with an illuminating lamp 19, the external environment is provided for the detection of the biological light shading property by arranging the illuminating lamp 19, the inner wall of the observation box 1 is provided with a humidity controller 20, the humidity degree of the inside of the observation box 1 is controlled by arranging the humidity controller 20, the right side of the observation box 1 is provided with a first through hole 21, the right side of the first through hole 21 is provided with a cover plate 22, the left side of the cover plate 22 is lapped with the right side of the observation box 1, the front of the cover plate 22 is hinged with the right side of the observation box 1 through a hinge 23, and the right side of the cover plate 22 is provided with, through the arrangement of the first handle 24, the pulling of the cover plate 22 is facilitated, the back of the cover plate 22 is fixedly connected with the two connecting plates 27, the upper surfaces of the two connecting plates 27 are respectively provided with the third through hole 28, the right side of the observation box 1 is fixedly connected with the fixing plate 25, the position of the fixing plate 25 corresponding to the third through hole 28 is provided with the second through hole 26, the inner walls of the second through hole 26 and the two third through holes 28 are provided with the same clamping rod 29, the clamping rod 29 is taken by the clamping rod 29, the connecting plates 27, the fixing plate 25, the second through hole 26 and the third through hole 28, the cover plate 22 is pulled by the first handle 24, the cover plate 22 is contacted with the observation box 1, then the clamping rod 29 is taken by the second handle 30, the clamping rod 29 penetrates through the second through hole 26 and the two third through holes 28, the fixing of the cover plate 22 is realized, and the condition that the living beings are stimulated to impact the, the lower surface of the top of the clamping rod 29 is in lap joint with the upper surface of the upper connecting plate 27, the upper surface of the clamping rod 29 is provided with a second handle 30, the second handle 30 is arranged, so that the clamping rod 29 can be conveniently pulled, the upper surface of the observation box 1 is provided with two installation rods 31, the opposite surfaces of the two installation rods 31 are provided with the same display screen 32, through the combined action of the display screen 32 and the camera 17, the camera 17 shoots the organism, the shot image is displayed on the display screen 32, so that the student can observe the habits and the reaction conditions of the organism more intuitively and comprehensively, the teaching efficiency is guaranteed, the left side surface of the observation box 1 is provided with a power supply 33, a first switch 34, a second switch 35, a third switch 36, a fourth switch 37, a fifth switch 38 and a sixth switch 39, the output end of the power supply 33 is respectively connected with the first switch 34, the second switch, the third switch 35, the fourth switch 37, the fifth switch 38, The input ends of the second switch 35, the third switch 36, the fourth switch 37, the fifth switch 38 and the sixth switch 39 are electrically connected, the output end of the first switch 34 is electrically connected with the output end of the motor 3 through a lead, the operation and control of the working state of the motor 3 by a user are more convenient by arranging the first switch 34, the output end of the second switch 35 is electrically connected with the input end of the electric push rod 16 through a lead, the operation and control of the working state of the electric push rod 16 by the user are more convenient by arranging the second switch 35, the output end of the third switch 36 is electrically connected with the input end of the illuminating lamp 19 through a lead, the operation and control of the working state of the illuminating lamp 19 by the user are more convenient by arranging the third switch 36, the output end of the fourth switch 37 is electrically connected with the input end of the humidity controller 20 through a lead, and the operation and control of the working state of the humidity controller 20 by the user are more, the output of fifth switch 38 is connected with the input of camera 17 through the wire, through setting up fifth switch 38, make the user more convenient to controlling of camera 17 operating condition, the output of sixth switch 39 passes through the wire and is connected with the input of display screen 32 electricity, through setting up sixth switch 39, make the user more convenient to controlling of display screen 32 operating condition, the input of display screen 32 passes through the wire and is connected with the output of camera 17 electricity.

The utility model discloses an operating procedure does:

S1, pulling the clamping rod 29 through the second handle 30, drawing the clamping rod 29 out of the second through hole 26 and the third through hole 28, pulling the cover plate 22 through the first handle 24 to separate the cover plate 22 from the observation box 1, then putting the organism to be observed into the observation box 1 through the first through hole 21, then pulling the cover plate 22 through the first handle 24 to enable the cover plate 22 to be in contact with the observation box 1, then taking the clamping rod 29 through the second handle 30 to enable the clamping rod 29 to penetrate through the second through hole 26 and the two third through holes 28, thereby realizing the fixation of the cover plate 22, and then starting the camera 17 and the display screen 32;

s2, turning on the illuminating lamp 19, observing the light shading performance of the living being, starting the motor 3 when the living being moves, driving the first gear 4 to rotate by the output shaft of the motor 3, driving the second gear 5 to rotate by the first gear 4, driving the rotary disc 7 to rotate by the first rotary shaft 61, driving the camera 17 to rotate by the mounting plate 10, and when the camera 17 rotates to a proper position, stopping the motor 3 by operating the first switch 34 by a user;

S3, the electric push rod 16 is started to extend the electric push rod 16, so that the second movable plate 15 with the second pulley 14 moves downwards, so that the left side of the mounting plate 10 rotates downwards, so that the spring 132 and the telescopic rod 131 shorten, so that the camera 17 rotates to the left side around the rotating shaft 82, or the user operates the second switch 35 to shorten the electric push rod 16, so that the second movable plate 15 with the second pulley 14 moves upwards, the first movable plate 12 moves downwards under the action of the elastic force of the spring 132, the telescopic rod 131 extends, so that the first pulley 11 moves downwards and presses the mounting plate 10, so that the camera 17 rotates around the right side shaft 82, when the camera 17 rotates to a proper position, the electric push rod 16 is stopped, the camera 17 is started to shoot the organism, and the shot image is displayed on the display screen 32, so that the student observes, then, the illumination lamp 19 is stopped by operating the third switch 36, and then the dry humidity controller 20 is operated by operating the fourth switch 37, thereby adjusting the dry humidity in the observation box 1, and then the habit and reaction of living beings are observed by operating the above operations.

The above-mentioned embodiments further describe the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (5)

1. The utility model provides a middle school biology teaching experimental apparatus which characterized in that: the observation box comprises a cube-shaped observation box (1), wherein two fixing rods (2) are fixedly connected to the upper surface of the observation box (1), opposite surfaces of the two fixing rods (2) are fixedly connected with the left side surface and the right side surface of a machine body of a motor (3) respectively, an output shaft of the motor (3) is fixedly connected with a first gear (4), the first gear (4) is meshed with a second gear (5), the lower surface of the second gear (5) is fixedly connected with a first rotating device (6), the first rotating device (6) is clamped on the upper surface of the observation box (1), the bottom end of the first rotating device (6) is fixedly connected with a turntable (7), the lower surface of the turntable (7) is hinged to a U-shaped plate (9) through a second rotating device (8), and the lower surface of the U-shaped plate (9) is fixedly connected with a mounting plate (10); the rotary disc (7) is positioned inside the observation box (1);

The upper surface of the mounting plate (10) is in lap joint with the bottom end of a first pulley (11), the top end of the first pulley (11) is fixedly connected with a first movable plate (12), the upper surface of the first movable plate (12) is fixedly connected with the lower surface of a rotary table (7) through a telescopic device (13), the upper surface of the mounting plate (10) is also in lap joint with the bottom end of a second pulley (14), the top end of the second pulley (14) is fixedly connected with a second movable plate (15), the upper surface of the second movable plate (15) is fixedly connected with the lower surface of the rotary table (7) through an electric push rod (16), the first pulley (11) and the second pulley (14) are respectively located on the left side and the right side of the rotary table (7), and the lower surface of the mounting plate (10) is provided with a camera (17);

the novel observation box is characterized in that a transparent glass plate (18) is arranged below the camera (17), the transparent glass plate (18) is fixed inside the observation box (1), an illuminating lamp (19) is arranged on the lower surface of the transparent glass plate (18), a first through hole (21) is formed in the right side surface of the observation box (1), a cover plate (22) is arranged on the right side of the first through hole (21), the left side surface of the cover plate (22) is in lap joint with the right side surface of the observation box (1), the front surface of the cover plate (22) is hinged to the right side surface of the observation box (1) through a hinge (23), a first handle (24) is arranged on the right side surface of the cover plate (22), two connecting plates (27) are fixedly connected to the back surface of the cover plate (22), third through holes (28) are formed in the upper surfaces of the two connecting plates (27), and a fixing plate (25) is fixedly connected, the fixing plate (25) is positioned between the two connecting plates (27) and is parallel to the two connecting plates (27), a second through hole (26) is formed in the position, corresponding to the third through hole (28), of the fixing plate (25), the circle centers of the second through hole (26) and the two third through holes (28) are positioned on the same vertical straight line, the fixing plate further comprises a clamping rod (29), and the clamping rod (29) can be vertically inserted into the second through hole (26) and the two third through holes to enable the cover plate (22) and the observation box (1) to be relatively fixed; a second handle (30) is arranged on the upper surface of the clamping rod (29); the novel observation box is characterized by further comprising a display screen (32), wherein the display screen (32) is fixed above the observation box (1) through two mounting rods (31).

2. The biological teaching experiment device of middle school according to claim 1, characterized in that: first rotary device (6) include first pivot (61), the top and the bottom of first pivot (61) respectively with the lower surface of second gear (5) and the last fixed surface of carousel (7) be connected, and the outer wall of first pivot (61) is provided with first bearing (62), first bearing (62) joint is at the upper surface of observation box (1).

3. The biological teaching experiment device of middle school according to claim 1, characterized in that: second rotating device (8) include second bearing (81), the upper surface of second bearing (81) and the lower fixed surface of carousel (7) are connected, and the inner wall of second bearing (81) has cup jointed second pivot (82), second pivot (82) both ends are through second bearing (81) and U shaped plate (9) swing joint, second bearing (81) are fixed on U shaped plate (9).

4. The biological teaching experiment device of middle school according to claim 1, characterized in that: the telescopic device (13) comprises a telescopic rod (131), a spring (132) is sleeved on the outer wall of the telescopic rod (131), and two ends of the spring (132) and two ends of the telescopic rod (131) are fixedly connected with the lower surface of the rotary table (7) and the upper surface of the first movable plate (12) respectively.

5. The biological teaching experiment device of middle school according to claim 1, characterized in that: the left side face of the observation box (1) is provided with a power supply (33), a first switch (34), a second switch (35), a third switch (36), a fourth switch (37), a fifth switch (38) and a sixth switch (39), the output end of the power supply (33) is respectively and electrically connected with the input ends of the first switch (34), the second switch (35), the third switch (36), the fourth switch (37), the fifth switch (38) and the sixth switch (39) through leads, the output end of the first switch (34) is electrically connected with the output end of the motor (3) through leads, the output end of the second switch (35) is electrically connected with the input end of the electric push rod (16) through leads, the output end of the third switch (36) is electrically connected with the input end of the illuminating lamp (19) through leads, the output end of the fourth switch (37) is electrically connected with the input end of the dry humidity controller (20) through leads, the output end of the fifth switch (38) is electrically connected with the input end of the camera (17) through a lead, the output end of the sixth switch (39) is electrically connected with the input end of the display screen (32) through a lead, and the input end of the display screen (32) is electrically connected with the output end of the camera (17) through a lead.