CN112021842A

CN112021842A - Multifunctional information management teaching device

Info

Publication number: CN112021842A
Application number: CN202010940398.2A
Authority: CN
Inventors: 王玉芬
Original assignee: Qilu Institute of Technology
Current assignee: Qilu Institute of Technology
Priority date: 2020-09-09
Filing date: 2020-09-09
Publication date: 2020-12-04
Anticipated expiration: 2040-09-09
Also published as: CN112021842B

Abstract

The invention provides a multifunctional information management teaching device which comprises a bottom plate, moving wheels, telescopic pipes, telescopic rods, a U-shaped frame, connecting rods, a protection plate, a placing plate, a rotatable fixed seat structure, a projection writing plate structure, an auxiliary support frame structure, a moving cleaning frame structure, a shell, a storage battery and a driving switch, wherein the moving wheels are respectively installed on the periphery of the lower surface of the bottom plate through bolts; the telescopic pipes are respectively welded on the left side and the right side of the upper surface of the bottom plate; the telescopic rods are respectively welded on the left side and the right side of the lower end of the U-shaped frame and are inserted into the telescopic pipes, and meanwhile, the connecting parts of the telescopic rods and the telescopic pipes are fixed through bolts. The invention has the beneficial effects that: through the setting of rotatable fixing base structure, when rotatory, receive external power and make the cardboard shrink to rotate between the latch, when not rotating, can block the cardboard through the latch and fix the use, and then be convenient for rotatory and fix and use at appointed angle.

Description

Multifunctional information management teaching device

Technical Field

The invention belongs to the technical field of information management teaching, and particularly relates to a multifunctional information management teaching device.

Background

In the teaching in-process of giving lessons, because blackboard face range is limited, often need extra teaching board at the in-process of giving lessons, the blackboard to the board restriction extends, or hang the wall map etc. on the teaching board and assist and give lessons, current teaching auxiliary device, through being provided with the stand that is used for the support, the upper end of stand sets up the face, the face can be vertical setting be used for additionally writing or hanging, teaching aid etc. can be placed in the setting of face level, for the convenience of removing, set up the universal wheel usually on the base of stand.

However, the existing information management teaching device has the problems that the device is inconvenient to adjust and use, the device has poor stabilizing effect and the device does not have the function of projection teaching.

Therefore, it is necessary to invent a multifunctional information management teaching device.

Disclosure of Invention

In order to solve the technical problems, the invention provides a multifunctional information management teaching device, which is used for solving the problems that the existing information management teaching device is inconvenient to adjust and use, has poor stabilizing effect and does not have the function of projection teaching. A multifunctional information management teaching device comprises a bottom plate, moving wheels, telescopic pipes, telescopic rods, a U-shaped frame, connecting rods, protection plates, a placing plate, a rotatable fixing seat structure, a projection writing board structure, an auxiliary support frame structure, a movable cleaning frame structure, a shell, a storage battery and a driving switch, wherein the moving wheels are respectively bolted on the periphery of the lower surface of the bottom plate; the telescopic pipes are respectively welded on the left side and the right side of the upper surface of the bottom plate; the telescopic rods are respectively welded on the left side and the right side of the lower end of the U-shaped frame and are inserted into the telescopic pipes, and meanwhile, the connecting parts of the telescopic rods and the telescopic pipes are fixed through bolts; the connecting rods are respectively welded on the middle left side and the middle right side of the lower surface of the U-shaped frame; the protection plates are respectively welded on the left side, the right side and the rear part of the upper surface of the placing plate; the placing plate is welded at the lower end of the connecting rod; the rotatable fixed seat structure is arranged between the projection writing board structure and the U-shaped frame; the auxiliary support frame structure is arranged at the rear end of the U-shaped frame; the movable cleaning frame structure bolt is arranged on the front surface of the projection writing board structure; the shell bolt is arranged on the upper part of the right end of the projection writing board structure; the storage battery is embedded in the shell; the driving switch is embedded in the upper part of the right surface of the shell; the rotatable fixed seat structure comprises a connecting cylinder, a latch, a connecting column, a clamping plate, a compression spring, a connecting seat and a sealing cover, wherein the connecting cylinder is embedded above the left side and the right side of the inside of the U-shaped frame respectively; the latch is integrally arranged on the outer side of the inner wall of the connecting cylinder; the rear end of the connecting column is connected with the rear part of the inner wall of the connecting cylinder through a bearing; the clamping plates are respectively installed on the periphery of the front surface of the connecting column through screws; the compression spring is glued between the clamping plate and the connecting seat; the connecting seat screw is arranged in the middle of the front end of the connecting column.

Preferably, the projection writing board structure comprises a white board, a first connecting block, a rotating shaft, a rotating rod, a projection curtain, a first connecting plate, a second connecting plate and a protective cloth, wherein connecting columns are arranged in the middle of the left end and the right end of the white board through screws; the first connecting blocks are respectively installed on the left side and the right side of the upper part of the front surface of the white board through screws; the rotating shaft is arranged between the first connecting block and the second connecting block through a bearing; the rotating rods are respectively welded on the periphery of the right side of the outer wall of the rotating shaft; the projection screen is glued at the lower end of the rotating shaft; the first connecting plates are respectively installed on the left side and the right side of the upper part of the front surface of the white board through screws; the second connecting plates are respectively installed on the left side and the right side of the lower portion of the front surface of the white board through screws.

Preferably, the auxiliary support frame structure comprises a first adjusting seat, a support column, a second adjusting seat, a support plate, a third adjusting seat, a fourth adjusting seat, a clamping rod, an assembling plate and an adjusting clamping seat, wherein the first adjusting seat is welded on the middle left side and the middle right side of the lower part of the rear wall of the U-shaped frame respectively; one end of the supporting column is connected between the first adjusting seat and the first adjusting seat in a shaft mode, and the other end of the supporting column is connected between the second adjusting seat and the second adjusting seat in a shaft mode; the second adjusting seats are respectively welded on the left side and the right side of the upper end of the supporting plate; the third adjusting seat is welded on the lower part of the front end of the supporting column; the fourth adjusting seat is connected to the left side of the third adjusting seat in a shaft mode; the clamping rod is welded at the front end of the fourth adjusting seat; the assembly plate is welded in the middle of the upper surface of the bottom plate; the adjusting clamping seat is welded at the upper end of the assembling plate.

Preferably, the movable cleaning frame structure comprises a second connecting block, a rotating motor, a ball screw, a movable strip, a cleaning plate, a third connecting block and a movable rod, wherein the second connecting block is respectively installed on the left side and the right side of the upper part of the front surface of the white plate through screws, and the rotating motor is installed on the right surface of the second connecting block through a bolt; the cleaning plate screw is arranged at the rear end of the movable strip; the third connecting blocks are respectively installed on the left side and the right side of the front surface of the white board through screws; the moving rod is welded between the third connecting block and the third connecting block.

Preferably, the outer wall of the clamping plate is provided with a triangular protrusion, the clamping plate is made of a PVC plastic plate, and the clamping plate is inserted between the clamping teeth and the clamping teeth.

Preferably, the sealing cover is in threaded connection with the outer side of the outer wall of the connecting cylinder, and the rear end of the sealing cover is in contact with the front end of the connecting seat.

Preferably, the front surface of the whiteboard is provided with a projection curtain, and the projection curtain is fixed on the whiteboard through a rotating shaft.

Preferably, the first connecting block is set to be rectangular, a bearing is arranged at the joint of the first connecting block and the rotating shaft, and a plurality of rotating rods are arranged on the outer wall of the rotating shaft.

Preferably, the protective cloth is glued between the first connecting plate and the second connecting plate, and the protective cloth is respectively arranged on the left side and the right side of the projection curtain.

Preferably, the lower surface of the supporting plate is provided with a straight anti-slip line, and the supporting plate is connected with the supporting column through a second adjusting seat.

Preferably, one end of the ball screw is mounted in the second connecting block through a bearing, and the other end of the ball screw is connected with an output shaft coupling of the rotating motor; the upper end of the moving strip is connected with the ball screw bolt.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the triangular bulges are arranged on the outer wall of the clamping plate, the clamping plate is made of a PVC plastic plate, the clamping plate is inserted between the clamping teeth and the clamping teeth, and is contracted under the action of external force during rotation, so that the clamping plate rotates between the clamping teeth, and when the clamping plate does not rotate, the clamping plate can be clamped by the clamping teeth for fixed use, so that the clamping plate can be rotated and fixed at a specified angle for use.

2. In the invention, a plurality of compression springs are arranged, and the compression springs are arranged on the inner side of the clamping plate, can be fixed and used by matching the elastic force of the compression springs with the clamping plate, and can also be rotated for use.

3. According to the invention, the sealing cover is in threaded connection with the outer side of the outer wall of the connecting cylinder, the rear end of the sealing cover is in contact with the front end of the connecting seat, and the connecting seat and the connecting column can be limited, so that the connecting cylinder can be used.

4. According to the invention, the projection screen is arranged on the front surface of the white board, and is fixed on the white board through the rotating shaft, so that the projection screen is convenient to install for projection, and the functionality is increased.

5. According to the invention, the first connecting block is rectangular, the bearing is arranged at the connecting part of the first connecting block and the rotating shaft, and a plurality of rotating rods are arranged on the outer wall of the rotating shaft, so that the rotating rods can be manually rotated to rotate conveniently, and meanwhile, the rotating shaft is driven to rotate, and the projection curtain can be accommodated and used conveniently.

6. According to the invention, the protective cloth is glued between the first connecting plate and the second connecting plate, and the protective cloth is respectively arranged on the left side and the right side of the projection curtain, so that the function of sun shading and protection is achieved, and the definition of the projection curtain in use is increased.

7. In the invention, the support column is arranged between the U-shaped frame and the ground, and the stability of the U-shaped frame is improved through the support column when the support column is used.

8. According to the invention, the lower surface of the supporting plate is provided with the straight anti-skidding lines, and the supporting plate is connected with the supporting column through the second adjusting seat, so that the supporting plate can be conveniently adjusted and used in cooperation with the supporting plate when being supported by the supporting column.

9. According to the invention, the adjusting clamping seat is triangular, and the adjusting clamping seat is arranged at the rear end of the clamping rod, so that the adjusting clamping seat can be conveniently matched with the clamping rod to adjust to different angles, and therefore, clamping and fixing support can be carried out through the adjusting clamping seat.

10. In the invention, one end of the ball screw is arranged in the second connecting block through a bearing, and the other end of the ball screw is connected with an output shaft coupler of the rotating motor; the upper end of the moving strip is connected with the ball screw bolt, and the driving rotating motor can drive the ball screw to rotate, so that the moving strip is matched to move, and meanwhile, the cleaning board is driven to clean the white board.

11. In the invention, the lower end of the moving strip is sleeved on the moving rod, and the moving strip is matched with the moving rod, so that the stability of the moving strip is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic side view of the rotatable fixing base structure of the present invention.

Fig. 3 is a schematic diagram of the rear surface structure of the projection writing board structure of the present invention.

Fig. 4 is a schematic structural view of the auxiliary supporting frame structure of the present invention.

Fig. 5 is a schematic structural view of the structure of the mobile cleaning frame of the present invention.

In the figure:

1. a base plate; 2. a moving wheel; 3. a telescopic pipe; 4. a telescopic rod; 5. a U-shaped frame; 6. a connecting rod; 7. a protection plate; 8. placing the plate; 9. a rotatable holder structure; 91. a connecting cylinder; 92. clamping teeth; 93. connecting columns; 94. clamping a plate; 95. a compression spring; 96. a connecting seat; 97. a sealing cover; 10. a projection writing board structure; 101. a white board; 102. a first connection block; 103. a rotating shaft; 104. rotating the rod; 105. a projection screen; 106. a first connecting plate; 107. a second connecting plate; 108. protective cloth; 11. an auxiliary support frame structure; 111. a first adjusting seat; 112. a support pillar; 113. a second adjusting seat; 114. a support plate; 115. a third adjusting seat; 116. a fourth adjusting seat; 117. a clamping rod; 118. assembling a plate; 119. adjusting the clamping seat; 12. a mobile cleaning frame structure; 121. a second connecting block; 122. a rotating electric machine; 123. a ball screw; 124. a moving bar; 125. cleaning the plate; 126. a third connecting block; 127. a travel bar; 13. a housing; 14. a storage battery; 15. the switch is driven.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in fig. 1 to 2, a multifunctional information management teaching device comprises a bottom plate 1, a movable wheel 2, an extension tube 3, an extension rod 4, a U-shaped frame 5, a connecting rod 6, a protection plate 7, a placing plate 8, a rotatable fixing seat structure 9, a projection writing board structure 10, an auxiliary support frame structure 11, a movable cleaning frame structure 12, a shell 13, a storage battery 14 and a driving switch 15, wherein the movable wheel 2 is respectively bolted on the periphery of the lower surface of the bottom plate 1; the telescopic pipes 3 are respectively welded on the left side and the right side of the upper surface of the bottom plate 1; the telescopic rods 4 are respectively welded on the left side and the right side of the lower end of the U-shaped frame 5, the telescopic rods 4 are inserted into the telescopic pipes 3, and meanwhile, the connecting parts of the telescopic rods 4 and the telescopic pipes 3 are fixed through bolts; the connecting rods 6 are respectively welded on the middle left side and the middle right side of the lower surface of the U-shaped frame 5; the protection plates 7 are respectively welded on the left side, the right side and the rear part of the upper surface of the placing plate 8; the placing plate 8 is welded at the lower end of the connecting rod 6; the rotatable fixed seat structure 9 is arranged between the projection writing board structure 10 and the U-shaped frame 5; the auxiliary supporting frame structure 11 is arranged at the rear end of the U-shaped frame 5; the movable cleaning frame structure 12 is mounted on the front surface of the projection writing board structure 10 through bolts; the shell 13 is mounted on the upper part of the right end of the projection writing board structure 10 through bolts; the storage battery 14 is embedded in the shell 13; the driving switch 15 is embedded in the upper part of the right surface of the shell 13; the rotatable fixed seat structure 9 comprises a connecting cylinder 91, a latch 92, a connecting column 93, a clamping plate 94, a compression spring 95, a connecting seat 96 and a sealing cover 97, wherein the connecting cylinder 91 is respectively embedded above the left side and the right side of the inside of the U-shaped frame 5; the latch 92 is integrally arranged on the outer side of the inner wall of the connecting cylinder 91; the rear end of the connecting column 93 is connected with the rear part of the inner wall of the connecting cylinder 91 through a bearing; the clamping plates 94 are respectively installed on the periphery of the front surface of the connecting column 93 through screws; the compression spring 95 is glued between the clamping plate 94 and the connecting seat 96; the connecting seat 96 is mounted in the middle of the front end of the connecting column 93 through a screw; the whiteboard 101 is rotated, the connecting post 93 rotates in the connecting cylinder 91, the clamping plate 94 moves between the clamping teeth 92, and after the whiteboard 101 rotates, the clamping plate 94 can be clamped between the clamping teeth 92 at a proper position, and the whiteboard 101 is enabled to be at a proper angle and used.

As shown in fig. 3, in the above embodiment, specifically, the projection writing board structure 10 includes a white board 101, a first connecting block 102, a rotating shaft 103, a rotating rod 104, a projection curtain 105, a first connecting plate 106, a second connecting plate 107 and a protective cloth 108, wherein a connecting post 93 is screwed in the middle of the left end and the right end of the white board 101; the first connecting blocks 102 are respectively installed on the left side and the right side of the upper part of the front surface of the whiteboard 101 through screws; the rotating shaft 103 is mounted between the first connecting block 102 and the first connecting block 102 through a bearing; the rotating rods 104 are respectively welded around the right side of the outer wall of the rotating shaft 103; the projection curtain 105 is glued at the lower end of the rotating shaft 103; the first connecting plates 106 are respectively installed at the left side and the right side of the upper part of the front surface of the whiteboard 101 by screws; the second connecting plates 107 are respectively mounted on the left and right sides of the lower portion of the front surface of the whiteboard 101 by screws.

As shown in fig. 4, in the above embodiment, specifically, the auxiliary supporting frame structure 11 includes a first adjusting seat 111, a supporting column 112, a second adjusting seat 113, a supporting plate 114, a third adjusting seat 115, a fourth adjusting seat 116, a clamping rod 117, an assembling plate 118 and an adjusting clamping seat 119, where the first adjusting seat 111 is welded on the middle left side and the middle right side of the lower portion of the rear wall of the U-shaped frame 5, respectively; one end of the supporting column 112 is connected between the first adjusting seat 111 and the first adjusting seat 111 in a shaft mode, and the other end of the supporting column 112 is connected between the second adjusting seat 113 and the second adjusting seat 113 in a shaft mode; the second adjusting seats 113 are respectively welded at the left side and the right side of the upper end of the supporting plate 114; the third adjusting seat 115 is welded at the lower part of the front end of the supporting column 112; the fourth adjusting seat 116 is coupled to the left side of the third adjusting seat 115; the clamping rod 117 is welded at the front end of the fourth adjusting seat 116; the assembling plate 118 is welded in the middle of the upper surface of the bottom plate 1; the adjusting clamping seat 119 is welded at the upper end of the assembling plate 118; the support column 112 and the catching bar 117 are inclined such that the support plate 114 at the lower end of the support column 112 is supported on the ground while the catching bar 117 is caught at the rear side of the adjustment catching seat 119.

As shown in fig. 5, in the above embodiment, specifically, the movable cleaning frame structure 12 includes a second connecting block 121, a rotating motor 122, a ball screw 123, a moving bar 124, a cleaning plate 125, a third connecting block 126 and a moving rod 127, the second connecting block 121 is respectively screwed on the left and right sides of the upper part of the front surface of the white board 101, and the rotating motor 122 is bolted on the right surface of the second connecting block 121; the cleaning plate 125 is mounted at the rear end of the moving bar 124 through screws; the third connecting blocks 126 are respectively installed on the left side and the right side of the front surface of the whiteboard 101 by screws; the moving rod 127 is welded between the third connecting block 126 and the third connecting block 126.

In the above embodiment, specifically, the outer wall of the clamping plate 94 is provided with a triangular protrusion, the clamping plate 94 is made of a PVC plastic plate, the clamping plate 94 is inserted between the latch 92 and the latch 92, and when the clamping plate 94 rotates, the clamping plate 94 contracts under the external force, so that the clamping plate 94 rotates between the latches 92, and when the clamping plate does not rotate, the clamping plate 94 can be clamped by the latch 92 for fixing, and further, the clamping plate 94 can rotate and be fixed at a specified angle for use.

In the above embodiment, specifically, the plurality of compression springs 95 are provided, and the compression springs 95 are disposed inside the catch plate 94, and can be fixed and used by matching the catch plate 94 with the elastic force of the compression springs 95, and can also be rotated for use.

In the above embodiment, specifically, the sealing cover 97 is screwed on the outer side of the outer wall of the connecting cylinder 91, and the rear end of the sealing cover 97 contacts with the front end of the connecting seat 96, so that the connecting seat 96 and the connecting column 93 can be limited, and thus the connecting cylinder can be used.

In the above embodiment, specifically, the front surface of the whiteboard 101 is provided with the projection curtain 105, and the projection curtain 105 is fixed on the whiteboard 101 through the rotating shaft 103, so that the projection curtain 105 is conveniently installed to perform projection work, and the functionality of the projection curtain is increased.

In the above embodiment, specifically, the first connecting block 102 is set to be rectangular, a bearing is arranged at the joint of the first connecting block 102 and the rotating shaft 103, and the rotating rods 104 on the outer wall of the rotating shaft 103 are provided with a plurality of rotating rods 104, so that the rotating rods 104 can be rotated manually, and the rotating shaft 103 can be driven to rotate along with the rotating rods 104, thereby facilitating the storage and use of the projection curtain 105.

In the above embodiment, specifically, the protective cloth 108 is glued between the first connecting plate 106 and the second connecting plate 107, and the protective cloth 108 is respectively disposed on the left and right sides of the projection curtain 105, so as to perform a sun-shading protection function, thereby increasing the definition of the projection curtain 105 during use.

In the above embodiment, specifically, the supporting column 112 is disposed between the U-shaped frame 5 and the ground, so that in use, the stability of the U-shaped frame 5 is increased by the supporting column 112.

In the above embodiment, specifically, the lower surface of the supporting plate 114 is provided with a straight anti-slip pattern, and the supporting plate 114 is connected with the supporting column 112 through the second adjusting seat 113, so that the supporting plate 114 can be conveniently adjusted and used in cooperation with the supporting column 112 when being supported by the supporting column 112.

In the above embodiment, specifically, the adjusting clamping seat 119 is set to be triangular, and the adjusting clamping seat 119 is set at the rear end of the clamping rod 117, so as to be convenient for adjusting the clamping rod 117 to different angles, thereby performing clamping and fixing support by adjusting the clamping seat 119.

In the above embodiment, specifically, one end of the ball screw 123 is installed in the second connecting block 121 through a bearing, and the other end is coupled to the output shaft of the rotating electrical machine 122; the upper end of the movable strip 124 is connected with the ball screw 123 through a bolt, and the rotary motor 122 is driven to drive the ball screw 123 to rotate, so that the movable strip 124 is matched to move, and the cleaning plate 125 is driven to clean the white board 101.

In the above embodiment, specifically, the lower end of the moving bar 124 is sleeved on the moving rod 127, and the moving bar 124 is matched with the moving rod 127, so that the stability of the moving bar 124 is increased.

In the above embodiment, specifically, the rotating electrical machine 122 is a 17HD40005-22B type electrical machine, and the rotating electrical machine 122 is electrically connected to the battery 14; the battery 14 is electrically connected to the driving switch 15, and the driving switch 15 is electrically connected to the rotating electrical machine 122.

Principle of operation

The working principle of the invention is as follows: when the whiteboard is used, the bottom plate 1 is moved to a designated position through the moving wheel 2, then the supporting columns 112 and the clamping rods 117 are inclined, so that the supporting plates 114 at the lower ends of the supporting columns 112 can be supported on the ground, meanwhile, the clamping rods 117 are clamped at the rear sides of the adjusting clamping seats 119, so that the supporting and the using can be completed, when the whiteboard 101 is used, writing and teaching can be performed on the surface of the whiteboard 101, in the teaching process, when the adjustment is needed, the whiteboard 101 is rotated, the connecting columns 93 rotate in the connecting cylinders 91, the clamping plates 94 move between the clamping teeth 92, after the rotation of the whiteboard 101 is completed, the clamping plates 94 can be clamped between the clamping teeth 92 at proper positions, and accordingly the whiteboard 101 is used at a proper angle, in the writing process, when the surface of the whiteboard 101 is cleaned, the rotating motor 122 is driven to drive the ball screw 123 to rotate, namely, the moving strips 124 and, thereby cleaning the surface of the white board 101, and when the projection is needed during teaching, the bottom board 1 is rotated and the back of the white board 101 is enabled, the surface of the projection curtain 105 faces the user, and then the projection curtain 105 can be projected and used.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.

Claims

1. The multifunctional information management teaching device is characterized by comprising a bottom plate (1), moving wheels (2), telescopic pipes (3), telescopic rods (4), a U-shaped frame (5), connecting rods (6), a protection plate (7), a placing plate (8), a rotatable fixed seat structure (9), a projection writing board structure (10), an auxiliary support frame structure (11), a movable cleaning frame structure (12), a shell (13), a storage battery (14) and a driving switch (15), wherein the moving wheels (2) are respectively bolted on the periphery of the lower surface of the bottom plate (1); the telescopic pipes (3) are respectively welded on the left side and the right side of the upper surface of the bottom plate (1); the telescopic rods (4) are respectively welded on the left side and the right side of the lower end of the U-shaped frame (5), the telescopic rods (4) are inserted into the telescopic pipes (3), and meanwhile, the connecting positions of the telescopic rods (4) and the telescopic pipes (3) are fixed through bolts; the connecting rods (6) are respectively welded on the middle left side and the middle right side of the lower surface of the U-shaped frame (5); the protection plates (7) are respectively welded on the left side, the right side and the rear part of the upper surface of the placing plate (8); the placing plate (8) is welded at the lower end of the connecting rod (6); the rotatable fixing seat structure (9) is arranged between the projection writing board structure (10) and the U-shaped frame (5); the auxiliary support frame structure (11) is arranged at the rear end of the U-shaped frame (5); the movable cleaning frame structure (12) is arranged on the front surface of the projection writing board structure (10) through bolts; the shell (13) is mounted on the upper part of the right end of the projection writing board structure (10) through bolts; the storage battery (14) is embedded in the shell (13); the driving switch (15) is embedded in the upper part of the right surface of the shell (13); the rotatable fixing seat structure (9) comprises a connecting cylinder (91), clamping teeth (92), a connecting column (93), a clamping plate (94), a compression spring (95), a connecting seat (96) and a sealing cover (97), wherein the connecting cylinder (91) is embedded above the left side and the right side of the inside of the U-shaped frame (5) respectively; the latch (92) is integrally arranged on the outer side of the inner wall of the connecting cylinder (91); the rear end of the connecting column (93) is connected with the rear part of the inner wall of the connecting cylinder (91) through a bearing; the clamping plates (94) are respectively installed on the periphery of the front surface of the connecting column (93) through screws; the compression spring (95) is glued between the clamping plate (94) and the connecting seat (96); the connecting seat (96) is arranged in the middle of the front end of the connecting column (93) through a screw; the projection writing board structure (10) comprises a white board (101), a first connecting block (102), a rotating shaft (103), a rotating rod (104), a projection curtain (105), a first connecting plate (106), a second connecting plate (107) and a protective cloth (108), wherein connecting columns (93) are arranged in the middle of the left end and the right end of the white board (101) through screws; the first connecting blocks (102) are respectively installed on the left side and the right side of the upper part of the front surface of the whiteboard (101) through screws; the rotating shaft (103) is arranged between the first connecting block (102) and the first connecting block (102) through a bearing; the rotating rods (104) are respectively welded around the right side of the outer wall of the rotating shaft (103); the projection curtain (105) is glued at the lower end of the rotating shaft (103); the first connecting plates (106) are respectively installed on the left side and the right side of the upper part of the front surface of the white board (101) through screws; the second connecting plates (107) are respectively installed on the left side and the right side of the lower portion of the front surface of the white board (101) through screws.

2. The multifunctional information management teaching device according to claim 1, wherein the auxiliary supporting frame structure (11) comprises a first adjusting seat (111), a supporting column (112), a second adjusting seat (113), a supporting plate (114), a third adjusting seat (115), a fourth adjusting seat (116), a clamping rod (117), an assembling plate (118) and an adjusting clamping seat (119), wherein the first adjusting seat (111) is welded at the middle left side and the middle right side of the lower part of the rear wall of the U-shaped frame (5) respectively; one end of the supporting column (112) is coupled between the first adjusting seat (111) and the first adjusting seat (111) in a shaft mode, and the other end of the supporting column is coupled between the second adjusting seat (113) and the second adjusting seat (113) in a shaft mode; the second adjusting seats (113) are respectively welded at the left side and the right side of the upper end of the supporting plate (114); the third adjusting seat (115) is welded at the lower part of the front end of the supporting column (112); the fourth adjusting seat (116) is coupled to the left side of the third adjusting seat (115) in a shaft manner; the clamping rod (117) is welded at the front end of the fourth adjusting seat (116); the assembling plate (118) is welded in the middle of the upper surface of the bottom plate (1); the adjusting clamping seat (119) is welded at the upper end of the assembling plate (118).

3. The multifunctional information management teaching device according to claim 1, wherein the movable cleaning frame structure (12) comprises a second connecting block (121), a rotating motor (122), a ball screw (123), a moving bar (124), a cleaning plate (125), a third connecting block (126) and a moving rod (127), the second connecting block (121) is respectively mounted on the left and right sides of the upper part of the front surface of the white board (101) by screws, and the rotating motor (122) is mounted on the right surface of the second connecting block (121) by bolts; the cleaning plate (125) is arranged at the rear end of the moving bar (124) through a screw; the third connecting blocks (126) are respectively installed on the left side and the right side of the front surface of the white board (101) through screws; the moving rod (127) is welded between the third connecting block (126) and the third connecting block (126).

4. The multifunctional information management teaching device according to claim 1, wherein the outer wall of the clamping plate (94) is provided with triangular projections, the clamping plate (94) is made of PVC plastic plate, and the clamping plate (94) is inserted between the latch (92) and the latch (92).

5. The multifunctional information management teaching device according to claim 1, wherein the compression spring (95) is provided in plurality, and the compression spring (95) is provided inside the card plate (94).

6. The multifunctional information management teaching device according to claim 1, wherein the front surface of the white board (101) is provided with a projection screen (105), and the projection screen (105) is fixed to the white board (101) by a rotating shaft (103).

7. The multifunctional information management teaching device according to claim 1, wherein the first connecting block (102) is rectangular, a bearing is provided at the joint of the first connecting block (102) and the rotating shaft (103), and a plurality of rotating rods (104) are provided on the outer wall of the rotating shaft (103).

8. The multifunctional information management teaching device according to claim 1, wherein the protective cloths (108) are glued between the first connecting plate (106) and the second connecting plate (107), and the protective cloths (108) are respectively arranged on the left and right sides of the projection curtain (105).

9. The multifunctional information management teaching device according to claim 2, wherein the adjusting clamp seat (119) is arranged in a triangle shape, the adjusting clamp seat (119) is arranged at the rear end of the clamping rod (117), and the supporting column (112) is arranged between the U-shaped frame (5) and the ground.

10. The multifunctional information management teaching device according to claim 3, wherein one end of the ball screw (123) is mounted in the second connecting block (121) through a bearing, and the other end is coupled to an output shaft of the rotating motor (122); the upper end of the moving strip (124) is connected with the ball screw (123) through a bolt.