CN113628482A

CN113628482A - Think political affairs education and use computer multimedia teaching device

Info

Publication number: CN113628482A
Application number: CN202111069759.1A
Authority: CN
Inventors: 匡列辉
Original assignee: Hunan City University
Current assignee: Hunan City University
Priority date: 2021-09-13
Filing date: 2021-09-13
Publication date: 2021-11-09

Abstract

The invention discloses a computer multimedia teaching device for thinking and political affairs education, which belongs to the field of multimedia teaching equipment and comprises a supporting bottom plate, a rotating assembly, a writing board, a second lifting assembly, a projection cloth folding and unfolding assembly, a spare projection cloth assembly and two first lifting assemblies, wherein the second lifting assembly is arranged in the rotating assembly, the projection cloth folding and unfolding assembly is arranged on the second lifting assembly, the spare projection cloth assembly is arranged on the second lifting assembly, the projection cloth folding and unfolding assembly is in transmission fit with the spare projection cloth assembly, and the spare projection cloth assembly is in sliding fit with the second lifting assembly. According to the invention, the first lifting assembly drives the writing board and the projection cloth retracting assembly to move up and down, so that the height positions of the writing board and the projection cloth can be respectively adjusted, the rotating assembly works to adjust the angle of the projection cloth, and the spare projection cloth assembly can adjust the size of the projection cloth according to the layout of a classroom, thereby improving the teaching quality.

Description

Think political affairs education and use computer multimedia teaching device

Technical Field

The invention relates to the field of multimedia teaching equipment, in particular to a computer multimedia teaching device for thinking and political affairs education.

Background

In the modern education field, along with the continuous development of computer technology, the continuous progress of the modern process of education technique, multimedia teaching is indispensable as an advanced teaching means, and multimedia teaching indicates the teaching in-process, according to the characteristics of teaching target and teaching object, through teaching design, reasonable selection and application modern teaching media to organic the combination with traditional teaching means, participate in the teaching overall process jointly, act on the student with multiple media information, form reasonable teaching structure, reach the teaching effect of optimization.

A multimedia computer teaching apparatus, as disclosed in CN109545008A, comprises a fixed frame, four locking universal wheels are distributed on the lower surface of the fixing frame in an array manner, two sleeves which are correspondingly arranged on the left and the right are arranged on the upper surface of the fixing frame, the front and the rear side surfaces of each sleeve are fixedly connected with the fixing frame through first reinforcing plates, a U-shaped column is arranged on the upper side of the fixing frame, the multimedia computer teaching device has firm structure and convenient movement, rotates the writing board, can rotate and adjust the writing board on the fixed column through the rotating block, and can drive the projection cloth to rotate, can be adjusted to the optimal position, is convenient for students at both sides of a classroom to watch, brings convenience to use, moreover, the initiative of the students in learning is better aroused, and the learning efficiency of the students is improved.

However, the existing device has the following problems that the size and the angle of the projection cloth can not be adjusted according to the layout of a classroom, and the teaching quality is influenced; secondly, the projection cloth is stained with the dust easily in long-time use, influences the definition of watching when teaching, and it is comparatively inconvenient to dismantle the washing.

Disclosure of Invention

The embodiment of the invention provides a computer multimedia teaching device for thinking and political affairs education, and aims to solve the technical problems that the size and the angle of projection cloth cannot be adjusted according to the layout of a classroom, the teaching quality is influenced, the projection cloth is easy to be stained with dust in the long-time use process, the watching definition is influenced, and the disassembly and the cleaning are inconvenient.

The embodiment of the invention adopts the following technical scheme: the utility model provides a think political affairs education and use computer multimedia teaching device, receive and releases subassembly, reserve projection cloth subassembly and two first lifting unit, two including supporting baseplate, runner assembly, clipboard, second lifting unit, projection cloth the symmetry sets up on supporting baseplate, the runner assembly sets up on two first lifting unit, the clipboard sets up on the runner assembly, second lifting unit sets up in the runner assembly, projection cloth receives and releases the subassembly setting on second lifting unit, reserve projection cloth subassembly sets up on second lifting unit, projection cloth receives and releases subassembly and reserve projection cloth subassembly transmission cooperation, reserve projection cloth subassembly and second lifting unit sliding fit, projection cloth subassembly and reserve projection cloth subassembly all are equipped with projection cloth.

Further, every first lifting unit all includes lift seat, lifter, spacing collar and a plurality of gag lever post, the lift seat sets up on supporting baseplate, the lifter sets up in the lift seat, lifter and lift seat sliding fit, a plurality of the even equidistance vertical setting of gag lever post is on the lateral wall of lifter, the lift seat side is equipped with the spout, spacing collar and lift seat normal running fit, the spacing collar side is equipped with spacing groove, a plurality of gag lever post and spout and spacing groove sliding fit.

Further, the runner assembly rotates seat, two axis of rotation and four universal wheels, four including rotating motor, supporting box, two rotation, four the universal wheel is the rectangular orthomorphism and fixes the bottom at the supporting baseplate, two it sets up respectively on two lifters to rotate the seat, two the axis of rotation runs through two rotation seats respectively, it sets up on rotating the seat to rotate the motor, the main shaft of rotating the motor and the one end fixed connection of one of them axis of rotation, the other end fixed connection of supporting box and two axis of rotation, the clipboard sets up on the lateral wall of supporting box.

Further, the second lifting component comprises a lifting block, a motor fixing box, a lifting motor, two lifting racks, two limiting columns and two lifting gears, wherein the lifting racks are symmetrically arranged in the supporting box, the two limiting columns are arranged beside the two lifting racks respectively, the lifting block is sleeved on the two limiting columns, one end of the lifting block penetrates through the top of the supporting box, the two lifting gears are symmetrically arranged at the other end of the lifting block in a rotating mode, the two lifting gears are meshed with each other and are meshed with the two lifting racks respectively, the motor fixing box is arranged on the side wall of the lifting block, the lifting motor is arranged in the motor fixing box, and a main shaft of the lifting motor is fixedly connected with one lifting gear.

Further, the projection cloth collecting and releasing assembly comprises a supporting top plate, a collecting and releasing rod, a transmission block, a collecting and releasing motor, a belt, two fixed blocks and three belt pulleys, wherein the supporting top plate is arranged on the lifting block, the collecting and releasing motor is arranged on the supporting top plate, one of the belt pulleys is fixedly connected with a main shaft of the collecting and releasing motor, the two fixed blocks are symmetrically arranged at the bottom of the supporting top plate, the two ends of the collecting and releasing rod penetrate through the two fixed blocks respectively, one end of the transmission block penetrates through one of the fixed blocks and the other two belt pulleys are fixedly connected with the collecting and releasing rod and the transmission block respectively, the belt sleeves are arranged on the three belt pulleys, and the transmission block is in transmission connection with the projection cloth collecting and releasing assembly at the working time.

Further, reserve projection cloth subassembly includes lead screw slip table, carriage and reserve pole, the lead screw slip table sets up on supporting the roof, the slip end of lead screw slip table and supporting the roof sliding fit, the carriage slides and sets up on supporting the case, the slip end and the carriage fixed connection of lead screw slip table, the reserve pole runs through the carriage, the other end of transmission piece is equipped with square groove, the one end of reserve pole is equipped with square piece, reserve pole and square piece slide and set up in square groove, the transmission piece during operation is connected with the transmission of reserve pole, the one end and the reserve pole fixed connection of projection cloth.

Further, still include the clearance subassembly, the clearance subassembly includes two-way lead screw slip table, clearance frame, two rotation connecting rods and two clearance roller brushes, be equipped with the clearance groove on the support roof, two-way lead screw slip table sets up on the support roof two the one end of rotation connecting rod respectively with two sliding end normal running fit of two-way lead screw slip table, clearance frame and clearance groove sliding fit, two the other end of rotation connecting rod all with clearance frame top normal running fit, two clearance roller brush symmetry sets up the bottom at the clearance frame.

The embodiment of the invention adopts at least one technical scheme which can achieve the following beneficial effects:

one of them, elevator motor work drives one of them lifting gear and rotates, thereby two lifting gear intermeshing drive another lifting gear and rotate, two lifting gear mesh with two lifting rack mutually respectively, drive the elevator and slide from top to bottom on two spacing posts for the elevator slides from top to bottom on the supporting box, thereby drives projection cloth and reciprocates, is convenient for write on can also the clipboard when watching the projection, improves the teaching quality of thinking political affairs education.

And secondly, when the projection cloth is required to be folded and unfolded, the transmission block rotates to drive the square block to rotate, the projection cloth is put down, the spare rod is made to rotate, the sliding frame is driven by the screw rod sliding table to move left and right, the sliding frame drives the square block of the spare rod to separate from the square groove to move to the side, the projection range of the projection cloth can be enlarged, or double-screen projection is used, the size of the projection cloth is adjusted according to the layout of a classroom, the space of the operating platform is increased during teaching, and the teaching quality is improved.

The utility model discloses a projection cloth receive and releases subassembly work when rolling two projection cloths, two sliding ends of two-way lead screw slip table are close to each other, make two rotation connecting rods rotatory, it drives the side of clearance frame and two clearance roller brushes downstream to two projection cloths to rotate the connecting rod, make projection cloth in the rolling, the dust of clearance roller brush on to projection cloth is cleared up, when needing to transfer projection cloth, two sliding end relative movement of two-way lead screw slip table, make clearance frame and two clearance roller brushes rebound, reduce the friction when transferring projection cloth, it is more smooth and easy to make projection cloth transfer, avoid projection cloth to be stained with the dust easily in long-time use, need not dismantle the washing, the definition of watching when improving the teaching.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a first perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic perspective view of a first lifting assembly and a rotating assembly according to the present invention;

FIG. 4 is a first schematic structural view of a second lifting assembly of the present invention;

FIG. 5 is a second schematic structural view of a second lifting assembly of the present invention;

FIG. 6 is a first schematic structural view of a projection cloth retracting assembly and a spare projection cloth assembly according to the present invention;

FIG. 7 is a second schematic structural view of a projection cloth retracting assembly and a spare projection cloth assembly according to the present invention;

fig. 8 is a schematic perspective view of the cleaning assembly of the present invention.

Reference numerals

The device comprises a supporting bottom plate 1, a rotating assembly 2, a writing board 21, a rotating motor 22, a supporting box 23, a rotating seat 24, a rotating shaft 25, a universal wheel 26, a second lifting assembly 3, a lifting block 31, a motor fixing box 32, a lifting motor 33, a lifting rack 34, a limiting column 35, a lifting gear 36, a projection cloth collecting and releasing assembly 4, a supporting top plate 41, a collecting and releasing rod 42, a transmission block 43, a collecting and releasing motor 44, a belt 45, a fixing block 46, a belt pulley 47, a spare projection cloth assembly 5, a screw rod sliding table 51, a sliding frame 52, a spare rod 53, a first lifting assembly 6, a lifting seat 61, a lifting rod 62, a limiting ring 63, a limiting rod 64, projection cloth 7, a cleaning assembly 8, a bidirectional screw rod sliding table 81, a cleaning frame 82, a rotating connecting rod 83 and a cleaning roller brush 84.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 8, an embodiment of the present invention provides a computer multimedia teaching apparatus for thinking and political affairs education, including a support base plate 1, a rotating assembly 2, a writing board 21, a second lifting assembly 3, a projection cloth storage assembly 4, a spare projection cloth assembly 5 and two first lifting assemblies 6, wherein the two first lifting assemblies 6 are symmetrically arranged on the support base plate 1, the rotating assembly 2 is arranged on the two first lifting assemblies 6, the writing board 21 is arranged on the rotating assembly 2, the second lifting assembly 3 is arranged in the rotating assembly 2, the projection cloth storage assembly 4 is arranged on the second lifting assembly 3, the spare projection cloth assembly 5 is arranged on the second lifting assembly 3, the projection cloth storage assembly 4 is in transmission fit with the spare projection cloth assembly 5, the spare projection cloth assembly 5 is in sliding fit with the second lifting assembly 3, and the projection cloth folding and unfolding component 4 and the spare projection cloth component 5 are both provided with projection cloth 7. Drive clipboard 21 and projection cloth through first lifting unit 6 and receive and release subassembly 4 and reciprocate, it receives and releases subassembly 4 and reciprocates to drive projection cloth through second lifting unit 3, can adjust the high position of clipboard 21 and projection cloth 7 respectively, the teaching in-process can use clipboard 21 to write when projective, the 2 work adjustment projection cloth 7 angles of runner assembly, reserve projection cloth subassembly 5 can be according to the overall arrangement in classroom, adjust the size of projection cloth 7, the quality of teaching is improved.

Preferably, referring to fig. 3, each of the first lifting assemblies 6 of the present invention includes a lifting seat 61, a lifting rod 62, a limiting ring 63, and a plurality of limiting rods 64, the lifting seat 61 is disposed on the support base plate 1, the lifting rod 62 is disposed in the lifting seat 61, the lifting rod 62 is in sliding fit with the lifting seat 61, the plurality of limiting rods 64 are uniformly and equidistantly vertically disposed on a side wall of the lifting rod 62, a sliding groove is disposed on a side surface of the lifting seat 61, the limiting ring 63 is in rotating fit with the lifting seat 61, a limiting groove is disposed on a side surface of the limiting ring 63, and the plurality of limiting rods 64 are in sliding fit with the sliding groove and the limiting groove. Make gag lever post 64 slide in spout and spacing groove through rotatory spacing collar 63, lifter 62 slides from top to bottom in lift seat 61, adjusts lifter 62's position according to the teaching needs for one of them gag lever post 64 is located the top of spacing collar 63, rotates spacing collar 63 again and makes spacing collar 63 carry on spacingly to lifter 62, according to the environment in classroom, adjusts the high position of clipboard 21 and projection cloth 7, improves the teaching quality.

Preferably, referring to fig. 3, the rotating assembly 2 of the present invention includes a rotating motor 22, a supporting box 23, two rotating seats 24, two rotating shafts 25 and four universal wheels 26, wherein the four universal wheels 26 are fixed at the bottom of the supporting base plate 1 in a rectangular shape, the two rotating seats 24 are respectively disposed on two lifting rods 62, the two rotating shafts 25 respectively penetrate through the two rotating seats 24, the rotating motor 22 is disposed on the rotating seats 24, a main shaft of the rotating motor 22 is fixedly connected to one end of one rotating shaft 25, the supporting box 23 is fixedly connected to the other ends of the two rotating shafts 25, and the writing board 21 is disposed on a side wall of the supporting box 23. The rotation motor 22 works to drive one of the rotating shafts 25 to rotate, so that the support box 23 and the other rotating shaft 25 are driven to rotate, the support box 23 drives the writing board 21 and the projection cloth folding and unfolding assembly 4 to rotate, the inclination angles of the writing board 21 and the projection cloth 7 are adjusted according to the layout of a classroom, and the position of the adjusting device is convenient through the four universal wheels 26, so that multimedia teaching is more convenient.

Preferably, referring to fig. 4-5, the second lifting assembly 3 of the present invention comprises a lifting block 31, a motor fixing box 32, a lifting motor 33, two lifting racks 34, two limiting columns 35 and two lifting gears 36, wherein the two lifting racks 34 are symmetrically disposed in the supporting box 23, the two limiting columns 35 are respectively disposed beside the two lifting racks 34, the lifting block 31 is sleeved on the two limiting columns 35, one end of the lifting block 31 penetrates through the top of the supporting box 23, the two lifting gears 36 are symmetrically and rotatably arranged at the other end of the lifting block 31, the two lifting gears 36 are mutually meshed, the two lifting gears 36 are respectively mutually meshed with the two lifting racks 34, the motor fixing box 32 is arranged on the side wall of the lifting block 31, the lifting motor 33 is arranged in the motor fixing box 32, and a main shaft of the lifting motor 33 is fixedly connected with one lifting gear 36. The work of elevator motor 33 drives one of them lifting gear 36 and rotates, thereby two lifting gear 36 intermeshing drive another lifting gear 36 and rotate, two lifting gear 36 mesh with two lifting rack 34 respectively, drive elevator 31 and slide from top to bottom on two spacing posts 35, make elevator 31 slide from top to bottom on supporting box 23, thereby drive projection cloth 7 and reciprocate, be convenient for write on can also the clipboard 21 when watching the projection, improve the teaching quality of think political affairs education.

Preferably, referring to fig. 6 to 7, the projection cloth retracting and releasing assembly 4 of the present invention includes a supporting top plate 41, a retracting and releasing rod 42, a transmission block 43, a retracting and releasing motor 44, a belt 45, two fixing blocks 46 and three belt pulleys 47, wherein the supporting top plate 41 is disposed on the lifting block 31, the retracting and releasing motor 44 is disposed on the supporting top plate 41, one of the belt pulleys 47 is fixedly connected to a main shaft of the retracting and releasing motor 44, the two fixing blocks 46 are symmetrically disposed at the bottom of the supporting top plate 41, two ends of the retracting and releasing rod 42 respectively penetrate through the two fixing blocks 46, one end of the transmission block 43 penetrates through one of the fixing blocks 46, the other two belt pulleys 47 are respectively fixedly connected to the retracting and releasing rod 42 and the transmission block 43, the belt 45 is sleeved on the three belt pulleys 47, and the transmission block 43 is in transmission connection with the projection cloth retracting and releasing assembly 4 during operation. Receive and release motor 44 work and drive one of them belt pulley 47 and rotate, and one of them belt pulley 47 passes through belt 45 and drives two other belt pulleys 47 and rotate, and two other belt pulleys 47 drive respectively and receive and release pole 42 and drive block 43 rotatory to receive and release projection cloth 7 on the pole 42 and projection cloth 7 of reserve projection cloth subassembly 5 and receive and release, the teaching use of being convenient for.

Preferably, referring to fig. 6 to 7, the spare projection cloth assembly 5 of the present invention includes a screw rod sliding table 51, a sliding frame 52 and a spare rod 53, wherein the screw rod sliding table 51 is disposed on the supporting top plate 41, a sliding end of the screw rod sliding table 51 is in sliding fit with the supporting top plate 41, the sliding frame 52 is slidably disposed on the supporting box 23, the sliding end of the screw rod sliding table 51 is fixedly connected with the sliding frame 52, the spare rod 53 penetrates through the sliding frame 52, the other end of the driving block 43 is provided with a square groove, one end of the spare rod 53 is provided with a square block, the spare rod 53 and the square block are slidably disposed in the square groove, the driving block 43 is in transmission connection with the spare rod 53 when operating, and one end of the projection cloth 7 is fixedly connected with the spare rod 53. When needs receive and release projection cloth 7, it is rotatory that transmission block 43 rotates and drives square piece, put down the back when projection cloth 7, thereby make reserve pole 53 rotatory, lead screw slip table 51 work drives carriage 52 and removes about, carriage 52 drives the square piece of reserve pole 53 and breaks away from square groove side displacement, can enlarge projection cloth 7's projection scope, or make the projection of two screens and use, adjust projection cloth 7's size according to the overall arrangement in classroom, but operation platform's space when increasing the teaching, improve the teaching quality.

Preferably, referring to fig. 8, the cleaning assembly 8 further comprises a two-way screw rod sliding table 81, a cleaning frame 82, two rotating connecting rods 83 and two cleaning roller brushes 84, a cleaning groove is formed in the supporting top plate 41, the two-way screw rod sliding table 81 is arranged on the supporting top plate 41, one ends of the two rotating connecting rods 83 are respectively in rotating fit with two sliding ends of the two-way screw rod sliding table 81, the cleaning frame 82 is in sliding fit with the cleaning groove, the other ends of the two rotating connecting rods 83 are both in rotating fit with the top of the cleaning frame 82, and the two cleaning roller brushes 84 are symmetrically arranged at the bottom of the cleaning frame 82. When projection cloth receive and releases subassembly 4 work and carries out the rolling to two projection cloth 7, two sliding ends of two-way lead screw slip table 81 are close to each other, make two rotation connecting rod 83 rotatory, rotation connecting rod 83 drives clearance frame 82 and two side of clearing up roller brush 84 downstream to two projection cloth 7, make projection cloth 7 in the rolling, the dust of clearing up roller brush 84 on projection cloth 7 is cleared up, when needing to transfer projection cloth 7, two sliding end relative movement of two-way lead screw slip table 81, make clearance frame 82 and two side of clearing up roller brush 84 rebound, reduce the friction when transferring projection cloth 7, make projection cloth 7 transfer more smooth and easy, avoid projection cloth 7 to be stained with the dust easily in long-time use, do not need to dismantle the washing, improve the definition that watches when teaching

The working principle is as follows: the limiting rods 64 slide in the sliding grooves and the limiting grooves by rotating the limiting rings 63, the lifting rods 62 slide up and down in the lifting seats 61, the positions of the lifting rods 62 are adjusted according to teaching requirements, one of the limiting rods 64 is positioned above the limiting ring 63, the limiting ring 63 is rotated to limit the lifting rods 62, the height positions of the writing board 21 and the projection cloth 7 are adjusted according to the classroom environment, the lifting motor 33 works to drive one of the lifting gears 36 to rotate, the two lifting gears 36 are meshed with each other to drive the other lifting gear 36 to rotate, the two lifting gears 36 are respectively meshed with the two lifting racks 34 to drive the lifting block 31 to slide up and down on the two limiting columns 35, the lifting block 31 slides up and down on the supporting box 23 to drive the projection cloth 7 to move up and down, and writing on the writing board 21 can be conveniently performed when the projection is watched, the teaching quality of the think political affairs education is improved, the rotating motor 22 works to drive one of the rotating shafts 25 to rotate, so as to drive the supporting box 23 and the other rotating shaft 25 to rotate, the supporting box 23 drives the writing board 21 and the projection cloth folding and unfolding component 4 to rotate, the inclination angles of the writing board 21 and the projection cloth 7 are adjusted according to the layout of a classroom, the position of the device is convenient to adjust through four universal wheels 26, so that the multimedia teaching is more convenient, the folding and unfolding motor 44 works to drive one of the belt pulleys 47 to rotate, one of the belt pulleys 47 drives the other two belt pulleys 47 to rotate through the belt 45, the other two belt pulleys 47 respectively drive the folding and unfolding rod 42 and the transmission block 43 to rotate, so as to fold and unfold the projection cloth 7 on the folding and unfolding rod 42 and the projection cloth 7 of the spare projection cloth component 5, so as to facilitate teaching, when the projection cloth 7 needs to be folded and unfolded, the transmission block 43 rotates to drive the square block to rotate, when the projection cloth 7 is put down, the spare rod 53 is rotated, the lead screw sliding table 51 works to drive the sliding frame 52 to move left and right, the sliding frame 52 drives the square block of the spare rod 53 to separate from the square groove and move to the side, the projection range of the projection cloth 7 can be enlarged, or the projection cloth can be used for double-screen projection, the size of the projection cloth 7 is adjusted according to the layout of a classroom, the space of an operable platform during teaching is increased, the teaching quality is improved, when the projection cloth take-up and pay-off component 4 works to roll up two projection cloths 7, two sliding ends of the bidirectional lead screw sliding table 81 are close to each other, so that the two rotating connecting rods 83 rotate, the rotating connecting rods 83 drive the cleaning frame 82 and the two cleaning roller brushes 84 to move downwards to the side of the two projection cloths 7, when the projection cloth 7 is rolled up, the cleaning roller brushes 84 clean dust on the projection cloth 7, when the projection cloth 7 needs to be put down, two slip end relative movement of two-way lead screw slip table 81 for clearance frame 82 and two clearance roller brushes 84 rebound, reduce the friction when transferring projection cloth 7, make projection cloth 7 transfer more smoothly, avoid projection cloth 7 to be stained with the dust easily in long-time use, need not dismantle the washing, the definition of watching when improving the teaching.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides a think political affairs education and use computer multimedia teaching device which characterized in that: comprises a supporting base plate (1), a rotating component (2), a writing board (21), a second lifting component (3), a projection cloth folding and unfolding component (4), a spare projection cloth component (5) and two first lifting components (6), wherein the two first lifting components (6) are symmetrically arranged on the supporting base plate (1), the rotating component (2) is arranged on the two first lifting components (6), the writing board (21) is arranged on the rotating component (2), the second lifting component (3) is arranged in the rotating component (2), the projection cloth folding and unfolding component (4) is arranged on the second lifting component (3), the spare projection cloth component (5) is arranged on the second lifting component (3), the projection cloth folding and unfolding component (4) is in transmission fit with the spare projection cloth component (5), and the spare projection cloth component (5) is in sliding fit with the second lifting component (3), the projection cloth folding and unfolding component (4) and the spare projection cloth component (5) are both provided with projection cloth (7).

2. The computer multimedia teaching apparatus for ideological and political education of claim 1, wherein: every first lifting unit (6) all includes lift seat (61), lifter (62), spacing collar (63) and a plurality of gag lever post (64), lift seat (61) sets up on supporting baseplate (1), lifter (62) sets up in lift seat (61), lifter (62) and lift seat (61) sliding fit, a plurality of the vertical setting of even equidistance of gag lever post (64) is on the lateral wall of lifter (62), lift seat (61) side is equipped with the spout, spacing collar (63) and lift seat (61) normal running fit, spacing collar (63) side is equipped with the spacing groove, a plurality of gag lever post (64) and spout and spacing groove sliding fit.

3. The computer multimedia teaching apparatus for ideological and political education of claim 2, wherein: rotating assembly (2) is including rotating motor (22), supporting box (23), two and rotate seat (24), two axis of rotation (25) and four universal wheel (26), four universal wheel (26) are the rectangular orthomorphism and fix the bottom at supporting baseplate (1), two rotate seat (24) and set up respectively on two lifter (62), two axis of rotation (25) run through two respectively and rotate seat (24), rotate motor (22) and set up on rotating seat (24), the main shaft of rotating motor (22) and the one end fixed connection of one of them axis of rotation (25), supporting box (23) and the other end fixed connection of two axis of rotation (25), clipboard (21) set up on the lateral wall of supporting box (23).

4. The computer multimedia teaching device for thinking of political affairs education of claim 3, wherein: the second lifting component (3) comprises a lifting block (31), a motor fixing box (32), a lifting motor (33), two lifting racks (34), two limiting columns (35) and two lifting gears (36), wherein the two lifting racks (34) are symmetrically arranged in the supporting box (23), the two limiting columns (35) are respectively arranged at the sides of the two lifting racks (34), the lifting block (31) is sleeved on the two limiting columns (35), one end of the lifting block (31) penetrates through the top of the supporting box (23), the two lifting gears (36) are symmetrically and rotatably arranged at the other end of the lifting block (31), the two lifting gears (36) are mutually meshed, the two lifting gears (36) are respectively mutually meshed with the two lifting racks (34), the motor fixing box (32) is arranged on the side wall of the lifting block (31), the lifting motor (33) is arranged in the motor fixing box (32), and a main shaft of the lifting motor (33) is fixedly connected with one lifting gear (36).

5. The computer multimedia teaching device for thinking of political affairs education of claim 4, wherein: the projection cloth folding and unfolding assembly (4) comprises a supporting top plate (41), a folding and unfolding rod (42), a transmission block (43), a folding and unfolding motor (44), a belt (45), two fixing blocks (46) and three belt pulleys (47), wherein the supporting top plate (41) is arranged on a lifting block (31), the folding and unfolding motor (44) is arranged on the supporting top plate (41), one belt pulley (47) is fixedly connected with a main shaft of the folding and unfolding motor (44), the two fixing blocks (46) are symmetrically arranged at the bottom of the supporting top plate (41), two ends of the folding and unfolding rod (42) respectively penetrate through the two fixing blocks (46), one end of the transmission block (43) penetrates through one fixing block (46), the other two belt pulleys (47) are respectively fixedly connected with the folding and unfolding rod (42) and the transmission block (43), and the belt (45) is sleeved on the three belt pulleys (47), the transmission block (43) is in transmission connection with the projection cloth folding and unfolding assembly (4) during working.

6. The computer multimedia teaching apparatus for ideological and political education of claim 5, wherein: spare projection cloth subassembly (5) include lead screw slip table (51), carriage (52) and reserve pole (53), lead screw slip table (51) set up on supporting roof (41), the slip end and the supporting roof (41) sliding fit of lead screw slip table (51), carriage (52) slide and set up on supporting box (23), the slip end and carriage (52) fixed connection of lead screw slip table (51), reserve pole (53) run through carriage (52), the other end of transmission piece (43) is equipped with square groove, the one end of reserve pole (53) is equipped with square piece, reserve pole (53) and square piece slide and set up in square groove, transmission piece (43) during operation is connected with reserve pole (53) transmission, the one end and reserve pole (53) fixed connection of projection cloth (7).

7. The computer multimedia teaching apparatus for ideological and political education of claim 5, wherein: still include clearance subassembly (8), clearance subassembly (8) include two-way lead screw slip table (81), clearance frame (82), two and rotate connecting rod (83) and two clearance roller brushes (84), be equipped with the clearance groove on supporting roof (41), two-way lead screw slip table (81) set up on supporting roof (41), two the one end of rotating connecting rod (83) respectively with two sliding end normal running fit of two-way lead screw slip table (81), clearance frame (82) and clearance groove sliding fit, two the other end of rotating connecting rod (83) all with clearance frame (82) top normal running fit, two clearance roller brush (84) symmetry sets up the bottom in clearance frame (82).