CN111833674A

CN111833674A - Mathematical teaching device using computer multimedia

Info

Publication number: CN111833674A
Application number: CN202010819530.4A
Authority: CN
Inventors: 刘春燕; 许乃伟; 许静; 许保华
Original assignee: Shandong Water Conservancy Vocational College
Current assignee: Shandong Water Conservancy Vocational College
Priority date: 2020-08-14
Filing date: 2020-08-14
Publication date: 2020-10-27

Abstract

The invention discloses a mathematical teaching device utilizing computer multimedia, which belongs to the technical field of teaching equipment and comprises two groups of U-shaped blocks which are oppositely attached, wherein free telescopic rods are fixed on the opposite small end surfaces of the two groups of U-shaped blocks through blind holes and bolts, the outer sides of the two groups of U-shaped blocks are provided with shear ports, the inner cavities of the shear ports on the left side and the right side are respectively and rotatably connected with mounting plates for mounting a multimedia computer and a projector through a through rotating shaft, a height adjusting device is matched and rotated to a vertical position through a long rotating shaft with a turntable and a butterfly bolt and can be lifted, meanwhile, a clamping device clamps projection cloths with various sizes, holds the mounting plate on the left side and adjusts the position of the U-shaped block on the right side so that the projector projects a complete mathematical teaching video or image onto the projection cloths, the device is convenient to move and is convenient for students to watch, meanwhile, the device can be folded in a telescopic mode, the occupied area is reduced, and the carrying is convenient.

Description

Mathematical teaching device using computer multimedia

Technical Field

The invention relates to the technical field of teaching equipment, in particular to a mathematical teaching device utilizing computer multimedia.

Background

Mathematics, it is a subject of the concepts such as research quantity, structure, change and space and information, from a certain angle belongs to form science one, and in human historical development and social life, mathematics also plays irreplaceable effect, also is the essential basic tool of study and research modern science and technology, multimedia teaching means in the teaching process, according to the characteristics of teaching target and teaching object, through teaching design, the reasonable selection and application modern teaching media, and with the organic combination of traditional teaching means, participate in the whole teaching process jointly, act on the student with multiple media information, form reasonable teaching process structure, reach the teaching effect of optimization. Multimedia computer aided teaching is that multimedia computer is used to process and control various media information such as symbol, language, character, sound, figure, image, etc. comprehensively, and each element of multimedia is combined and displayed by screen or projector projection according to teaching requirement, and simultaneously, the cooperation of sound is added according to requirement, and the man-machine interaction operation between user and computer is used to complete teaching or training process, at present, when mathematical teaching is carried out, teacher needs to draw and watch students, for example CN209895519U discloses a mathematical teaching device using computer multimedia, relating to the technical field of mathematical teaching device, in particular to a mathematical teaching device using computer multimedia, which comprises base, lifting rod, supporting plate, multimedia computer, fixed block, multi-section telescopic rod, Ejector pin, projection cloth and projecting apparatus, the last fixed surface of base installs the lifter, the top fixedly connected with backup pad of lifter, the upper surface of backup pad is provided with the multimedia computer, the both sides of backup pad upper surface all are provided with the multisection telescopic link, one side of multisection telescopic link is provided with the projection cloth, one side of backup pad is provided with the projecting apparatus. According to the mathematical teaching device utilizing the computer multimedia, through the arrangement of the multimedia computer, the projection cloth and the projector, when a teacher uses the multimedia computer to draw, the projector can project drawing pictures on the projection cloth, so that the students can conveniently watch and learn the pictures, but the device is difficult to be matched with different projection cloths for use.

Disclosure of Invention

The present invention is directed to a mathematical education apparatus using computer multimedia, so as to solve the problems of the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a mathematical teaching device utilizing computer multimedia comprises two groups of U-shaped blocks which are oppositely attached, wherein free telescopic rods are fixed on the relatively small end faces of the two groups of U-shaped blocks through blind holes and bolts, shear ports are arranged on the outer sides of the two groups of U-shaped blocks, the inner cavities of the shear ports on the left side and the right side are rotatably connected with mounting plates for mounting a multimedia computer and a projector through a through rotating shaft, the inner cavity of the U-shaped block on the left side is rotatably connected with a long rotating shaft with a turntable through a bearing, a butterfly bolt which is jointed with the front surface of the left U-shaped block is in threaded connection with the turntable in a penetrating way, a height adjusting device is installed on the outer wall of the long rotating shaft, a clamping device is horizontally fixed at the top of the height adjusting device, a supporting plate is fixed in the inner cavity of the U-shaped block on the right side, and the clamping device is lapped on the surface of the supporting plate;

the utility model discloses a building device, including U-shaped block, supporting leg, bearing, short rotation axis, chain sprocket assembly, bearing, drive shaft, the equal vertically fixed in two angles in the bottom outside of type U type piece has the supporting leg of taking the universal wheel, be provided with brake assembly on the universal wheel, left and right sides rear the inner wall of supporting leg all is fixed with the L template, the surface of L template and backup pad laminating is passed through the bearing and is rotated the grafting and have a short rotation axis, the outer wall of short rotation axis with run through between the pivot and be connected through chain sprocket assembly, the lateral wall of L template is rotated through the bearing and is connected with the drive shaft, the inner of.

Furthermore, a butterfly nut is screwed on the front side of the outer wall of the left side penetrating through the rotating shaft and is tightly attached to the inner wall of the U-shaped block.

Furthermore, the surface of the U-shaped block is provided with a plurality of through holes.

Further, height adjusting device includes that two sets of interval an organic whole fix the first U type piece of taking spacing bolt on long rotation axis, the inner chamber of first U type piece is fixed with first hand push rod, and is two sets of the welding has the crossbeam between the relative outer wall of first U type piece, the middle part of crossbeam is fixed with the low-speed just motor that rotates, be connected through belt drive assembly between the motor shaft of the motor that rotates just to the low-speed and the power input shaft of first hand push rod.

Further, height adjusting device includes that two groups separate integrative second U type piece of fixing in the epaxial spacing bolt of long rotation, the inner chamber of second U type piece has the hand push rod of second through spacing bolt fastening, one of them the outer wall of second U type piece is fixed with the riser, the riser is with two sets of connect through worm gear subassembly between the power input shaft of the hand push rod of second, the inboard of riser is fixed with the speed-increasing box, the power take off end of speed-increasing box passes through the bevel gear pair and is connected with the worm, the outer wall of speed-increasing box passes through the bolt fastening and has F type support, the lateral wall of F type support rotates through the bearing and is connected with the manual telescopic link of second of taking the carousel, the inner of the manual telescopic link of second is connected with the power input end of speed-increasing box through the bevel gear pair.

Further, clamping device includes first straight tube, the equal spiro union in both ends of first straight tube has first sprue, the outer wall right side central authorities of first straight tube are provided with the rectangle through groove along length direction, the top that the rectangle led to the groove is provided with the scale of embedded on first straight tube surface, both sides all are fixed with the first sleeve pipe of taking fixing bolt around the bottom of first straight tube, the inner chamber that the rectangle led to the groove runs through the slip and pegs graft and has two sets of T type pieces, the outer end of T type piece is fixed with first iron clamp, the relative rectangle of the inner wall of first straight tube leads to the groove and is fixed with the cell body, the internal surface of T type piece is fixed with spacing pipe, the inner chamber of spacing pipe has the carriage release lever through the spring slip grafting, the outer end of carriage release lever is fixed with the straight running wheel with the sliding fit of cell body inner wall.

Further, clamping device includes the second straight tube, both sides all are fixed with the second sleeve pipe of taking fixing bolt around the bottom of second straight tube, the horizontal diameter direction of second straight tube is provided with the square groove that runs through, it has two sets of T type poles to run through the interpolation of square groove, the welding of the outer wall right side of T type pole has the first arc piece with the laminating of second straight tube outer wall, the right-hand member of T type pole is fixed with the second iron clamp, the equal spiro union in both ends of second straight tube has the second sprue, the outer wall left side slip of T type pole cup joints the second arc piece, the inner wall of second arc piece passes through universal ball and second straight tube surface sliding connection, cup jointed the elastic component between the surface of second arc piece and the left end of T type pole.

Compared with the prior art, the invention has the beneficial effects that: the invention utilizes the lower surfaces of the mounting plates at the left side and the right side to fix the multimedia computer and the projector through the pressing block and the bolt respectively and rotate one of the mounting plates, the other mounting plate is rotated under the action of the chain and chain wheel assembly, the short rotating shaft, the driving shaft and the first manual telescopic rod, meanwhile, the two groups of U-shaped blocks can be separated by loosening the bolt on the first manual telescopic rod, the height adjusting device can be lifted up and down by rotating to a vertical position through the matching of a long rotating shaft with a turntable and a butterfly bolt, meanwhile, the clamping device clamps the projection cloth with various sizes, holds the mounting plate at the left side, adjusts the position of the U-shaped block at the right side, and leads the projector to project the video or image of the complete mathematical education on the projection cloth, the device removes conveniently, and the student of being convenient for watches, and the device is scalable folding simultaneously, reduces area, portable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial front view of FIG. 1;

FIG. 3 is a schematic structural view of a first height adjustment device according to the present invention;

FIG. 4 is a schematic structural view of a second height adjustment device according to the present invention;

FIG. 5 is a schematic structural view of a first clamping device according to the present invention;

FIG. 6 is a schematic structural diagram of a second clamping device according to the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1-a U-like block, 2-a free telescopic rod, 3-a shear port, 4-a mounting plate, 5-a long rotating shaft, 6-a butterfly bolt, 7-a height adjusting device, 8-a clamping device, 9-a supporting plate, 10-a supporting leg, 11-an L-shaped plate, 12-a short rotating shaft, 13-a chain and sprocket assembly, 14-a driving shaft and 15-a first manual telescopic rod;

700-a first U-shaped block, 701-a first hand push rod, 702-a cross beam, 703-a low-speed forward and reverse rotation motor, 704-a belt transmission component, 705-a second U-shaped block, 706-a second hand push rod, 707-a vertical plate, 708-a worm gear component, 709-a speed increasing box, 710-an F-shaped bracket and 711-a second hand telescopic rod;

800-a first straight pipe, 801-a first block, 802-a first sleeve, 803-a rectangular through groove, 804-a T-shaped block, 805-a groove body, 806-a limiting pipe, 807-a moving rod, 808-a straight wheel, 809-a first iron clamp, 810-a second straight pipe, 811-a second sleeve, 812-a penetrating square groove, 813-a T-shaped rod, 814-a first arc-shaped block, 815-a second iron clamp, 816-a second block, 817-a second arc-shaped block, 818-a universal ball and 819-an elastic part.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Example one

Referring to fig. 1-3 and fig. 5, the present invention provides a technical solution: a mathematical teaching device utilizing computer multimedia comprises two groups of U-shaped blocks 1 which are oppositely attached, wherein free telescopic rods 2 are fixed on the relatively small end faces of the two groups of U-shaped blocks 1 through blind holes and bolts, shear ports 3 are arranged on the outer sides of the two groups of U-shaped blocks 1, the inner cavities of the left side shear port 3 and the right side shear port 3 are rotatably connected with mounting plates 4 used for mounting a multimedia computer and a projector through penetrating rotating shafts, the inner cavity of the left side U-shaped block 1 is rotatably connected with a long rotating shaft 5 with a rotating disc through a bearing in a penetrating manner, a butterfly bolt 6 attached to the front surface of the left side U-shaped block 1 is screwed on the rotating disc in a penetrating manner, a height adjusting device 7 is mounted on the outer wall of the long rotating shaft 5, a clamping device 8 is horizontally fixed at the top of the height adjusting device 7, a supporting plate 9 is fixed in the inner cavity of the right side U-shaped;

the equal vertical fixation in two angles in the bottom outside of type U type piece 1 has supporting leg 10 of taking the universal wheel, be provided with brake assembly on the universal wheel, the inner wall of left and right sides rear supporting leg 10 all is fixed with L template 11, the surface of L template 11 and the laminating of backup pad 10 is passed through the bearing and is rotated the grafting and have short rotation axis 12, the outer wall of short rotation axis 12 with run through between the pivot be connected through chain sprocket assembly 13, the lateral wall of L template 11 is rotated through the bearing and is connected with drive shaft 14, the inner of drive shaft 14 is connected with short rotation axis 12 through bevel gear pair, be fixed with first manual telescopic link 15 between two sets of drive shaft 14's the outer end.

The front side of the outer wall of the left side penetrating through the rotating shaft is in threaded connection with a butterfly nut, the butterfly nut is tightly attached to the inner wall of the U-shaped block 1, the rotated U-shaped block 1 is convenient to fix, a plurality of through holes are formed in the surface of the U-shaped block 1, the overall weight is reduced, meanwhile, the projection cloth is convenient to pull down by using a bolting pull rope and a spring clamp, and shaking is avoided;

the height adjusting device 7 comprises two groups of first U-shaped blocks 700 which are integrally fixed on the long rotating shaft 5 at intervals and provided with limiting bolts, a first hand-operated push rod 701 is fixed in the inner cavity of each first U-shaped block 700 through the limiting bolts, a cross beam 702 is welded between the opposite outer walls of the two groups of first U-shaped blocks 700, a low-speed forward and reverse rotating motor 703 is fixed in the middle of the cross beam 702, and a motor shaft of the low-speed forward and reverse rotating motor 703 is connected with a power input shaft of the first hand-operated push rod 701 through a belt transmission assembly 704;

the clamping device 8 comprises a first straight pipe 800, both ends of the first straight pipe 800 are in threaded connection with first blocking blocks 801, the center of the right side of the outer wall of the first straight pipe 800 is provided with a rectangular through groove 803 along the length direction, a graduated scale embedded in the surface of the first straight pipe 800 is arranged above the rectangular through groove 803, the front side and the rear side of the bottom of the first straight pipe 800 are respectively fixed with a first sleeve 802 with a fixing bolt, the inner cavity of the rectangular through groove 803 is penetrated and slidably inserted with two groups of T-shaped blocks 804, the outer end of each T-shaped block 804 is fixed with a first iron clamp 809, the inner wall of the first straight pipe 800 is fixed with a groove body 805 opposite to the rectangular through groove 803, the inner surface of each T-shaped block 804 is fixed with a limiting pipe 806, the inner cavity of each limiting pipe 806 is slidably inserted with a moving rod 807 through a spring, and the outer;

the butterfly bolt 6 is loosened, the long rotating shaft 5 is rotated, the first hand rocking push rod 701 is in a vertical state, the butterfly bolt 6 is locked, the low-speed forward and reverse rotating motor 703 is connected with electricity and then rotates forward and reverse to enable the first hand rocking push rod 701 to stretch, the tops of the two groups of first sleeves 802 and the tops of the two groups of first hand rocking push rods 701 are fixed through fixing bolts respectively, the two groups of T-shaped blocks 804 are pressed to enable the two groups of first sleeves and the tops of the two groups of first hand rocking push rods 701 to move in the groove body 805 through the straight-moving wheels 808, and the two groups of first iron.

Example two

Referring to fig. 1-3 and fig. 6, the present invention provides a technical solution: the height adjusting device 7 comprises two sets of first U-shaped blocks 700 which are integrally fixed on a long rotating shaft 5 at intervals and provided with limiting bolts, a first hand-operated push rod 701 is fixed in the inner cavity of each first U-shaped block 700 through the limiting bolts, a cross beam 702 is welded between the opposite outer walls of the two sets of first U-shaped blocks 700, a low-speed forward and reverse rotating motor 703 is fixed in the middle of the cross beam 702, a motor shaft of the low-speed forward and reverse rotating motor 703 is connected with a power input shaft of the first hand-operated push rod 701 through a belt transmission component 704, the clamping device 8 comprises a second straight pipe 810, second sleeves 811 provided with fixing bolts are fixed on the front side and the rear side of the bottom of the second straight pipe 810, a through square groove 812 is arranged in the horizontal diameter direction of the second straight pipe 810, two sets of T-shaped rods 813 are inserted in the through square groove 812, a first arc-shaped block 814 attached to the outer wall of the second straight pipe 810 is welded on the right side of the outer, the two ends of the second straight pipe 810 are respectively screwed with a second blocking block 816, the left side of the outer wall of the T-shaped rod 813 is slidably sleeved with a second arc-shaped block 817, the inner wall of the second arc-shaped block 817 is slidably connected with the outer surface of the second straight pipe 810 through a universal ball 818, an elastic part 819 is sleeved between the outer surface of the second arc-shaped block 817 and the left end of the T-shaped rod 813, two groups of second sleeves 811 and the tops of two groups of first rocking push rods 701 are fixed through fixing bolts respectively, a butterfly bolt 6 is loosened, the long rotating shaft 5 is rotated, the first rocking push rods 701 are in a vertical state, the butterfly bolt 6 is locked, the low-speed forward and reverse motor 703 is electrified and then rotates forward and reverse to enable the first rocking push rods 701 to stretch and retract, the T-shaped rod 813 is pulled outwards and moved left and right simultaneously to separate the two groups of second iron clamps 815 for clamping the projection cloth, and under the action of the elastic part 819, the T.

EXAMPLE III

Referring to fig. 1, 2, 4 and 5, the present invention provides a technical solution: the height adjusting device 7 comprises two groups of second U-shaped blocks 705 with limiting bolts, the inner cavities of the second U-shaped blocks 705 are fixed with second hand-operated push rods 706 through the limiting bolts, the outer wall of one second U-shaped block 705 is fixed with a vertical plate 707, the vertical plate 707 is connected with power input shafts of the two groups of second hand-operated push rods 706 through worm and gear assemblies 708, a speed-increasing box 709 is fixed on the inner side of the vertical plate 707, the power output end of the speed-increasing box 709 is connected with a worm through a bevel gear pair, the outer wall of the speed-increasing box 709 is fixed with an F-shaped bracket 710 through bolts, the side wall of the F-shaped bracket 710 is rotatably connected with a second hand-operated telescopic rod 711 with a rotary disc through a bearing, the inner end of the second hand-operated telescopic rod is connected with the power input end of the speed-increasing box 709 through the bevel gear pair, the clamping device 8 comprises a first straight pipe 800, the two ends 801 of the first straight pipe 800 are, the outer wall right side central authorities of first straight tube 800 are provided with the rectangle and lead to groove 803 along length direction, the top that the rectangle led to groove 803 is provided with the scale of embedded on first straight tube 800 surface, both sides all are fixed with the first sleeve pipe 802 of taking fixing bolt around the bottom of first straight tube 800, the inner chamber that the rectangle led to groove 803 runs through to slide to peg graft has two sets of T type pieces 804, the outer end of T type piece 804 is fixed with first iron clamp 809, the relative rectangle of the inner wall of first straight tube 800 leads to groove 803 to be fixed with cell body 805, the internal surface of T type piece 804 is fixed with spacing pipe 806, the inner chamber of spacing pipe 806 slides through the spring and pegs graft and has the carriage release lever 807, the outer end of carriage release lever 807 is fixed with the straight driving wheel 808 of.

The butterfly bolt 6 is loosened, the long rotating shaft 5 is rotated, the second hand rocking push rods 706 are in a vertical state, the butterfly bolt 6 is locked, the second hand telescopic rods 711 with the rotating discs are rotated positively and negatively to enable the power output end of the speed increasing box 709 to rotate at a high speed, the worm and gear assembly 708 enables the two groups of second hand rocking push rods 706 to stretch and retract, the tops of the first sleeve 802 and the two groups of second hand rocking push rods 706 are fixed through fixing bolts respectively, the two groups of T-shaped blocks 804 are pressed to enable the T-shaped blocks to move in the groove 805 through the straight wheels 808, and the two groups of first iron clamps 809 clamp the projection cloth and limit the projection cloth through outward extrusion of.

Example four

Referring to fig. 1, 2, 4 and 6, the present invention provides a technical solution: the height adjusting device 7 comprises two groups of second U-shaped blocks 705 with limiting bolts, the inner cavities of the second U-shaped blocks 705 are fixed with second hand-operated push rods 706 through the limiting bolts, the outer wall of one second U-shaped block 705 is fixed with a vertical plate 707, the vertical plate 707 is connected with power input shafts of the two groups of second hand-operated push rods 706 through worm and gear assemblies 708, the inner side of the vertical plate 707 is fixed with a speed-increasing box 709, the power output end of the speed-increasing box 709 is connected with a worm through a bevel gear pair, the outer wall of the speed-increasing box 709 is fixed with an F-shaped bracket 710 through bolts, the side wall of the F-shaped bracket 710 is rotatably connected with a second manual telescopic rod 711 with a rotary disc through a bearing, the inner end of the second manual telescopic rod is connected with the power input end of the speed-increasing box 709 through the bevel gear pair, the clamping device 8 comprises a second straight pipe 810, the front side and the back side of the bottom of the second straight pipe 810 are both fixed with, a through square groove 812 is arranged in the horizontal diameter direction of the second straight pipe 810, two groups of T-shaped rods 813 are inserted into the through square groove 812, a first arc-shaped block 814 attached to the outer wall of the second straight pipe 810 is welded on the right side of the outer wall of the T-shaped rods 813, a second iron clamp 815 is fixed at the right end of the T-shaped rods 813, second blocking blocks 816 are screwed at two ends of the second straight pipe 810, the left side of the outer wall of the T-shaped rods 813 is slidably sleeved with a second arc-shaped block 817, the inner wall of the second arc-shaped block 817 is slidably connected with the outer surface of the second straight pipe 810 through a universal ball 818, and an elastic part 819 is sleeved between the outer surface of the second arc-shaped block 817 and the;

the butterfly bolt 6 is loosened, the long rotating shaft 5 is rotated, the second hand rocking push rods 706 are in a vertical state, the butterfly bolt 6 is locked, the second hand telescopic rods 711 with the rotating discs are rotated positively and reversely to enable the power output end of the speed increasing box 709 to rotate at a high speed, the worm and gear assembly 708 enables the two groups of second hand rocking push rods 706 to stretch and retract, the tops of the two groups of second sleeves 811 and the tops of the two groups of second hand rocking push rods 706 are fixed through fixing bolts respectively, the T-shaped rod 813 is pulled outwards and moved leftwards and rightwards simultaneously to enable the two groups of second iron clamps 815 to be separated to clamp the projection cloth, and under the action of the elastic piece 819, the T-shaped rod 813 drives the first arc-shaped block.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides an utilize computer multimedia's mathematical education device, includes two sets of U type pieces (1) of laminating relatively, its characterized in that: the relative little terminal surface of two sets of type U type pieces (1) is fixed with free telescopic link (2) through blind hole and bolt, the outside of two sets of type U type pieces (1) is provided with cut opening (3), left side and right side the inner chamber of cut opening (3) all is connected with mounting panel (4) that are used for installing multimedia computer and projecting apparatus through running through the pivot rotation, the left side the inner chamber of type U type piece (1) runs through the rotation through the bearing and is connected with long rotation axis (5) of taking the carousel, run through the spiro union on the carousel have with the left side butterfly bolt (6) of the laminating of the front surface of type U type piece (1), install height adjusting device (7) on the outer wall of long rotation axis (5), the top level of height adjusting device (7) is fixed with clamping device (8), the right side the inner chamber of type U type piece (1) is fixed with layer board (9), the clamping device (8) is lapped on the surface of the supporting plate (9);

the utility model discloses a brake assembly, including U-shaped block (1), the bottom outside both corners of type U type piece (1) all be fixed with supporting leg (10) of taking the universal wheel perpendicularly, be provided with brake subassembly on the universal wheel, left and right sides rear the inner wall of supporting leg (10) all is fixed with L template (11), the surface of L template (11) and backup pad (10) laminating is passed through the bearing and is rotated the grafting and have short rotation axis (12), the outer wall of short rotation axis (12) with run through between the pivot and be connected through chain sprocket assembly (13), the lateral wall of L template (11) is rotated through the bearing and is connected with drive shaft (14), the inner of drive shaft (14) is connected with short rotation axis (12) through the bevel gear pair, and is two sets of be fixed with first manual telescopic pole (15) between the.

2. The mathematical education apparatus using computer multimedia as claimed in claim 1, wherein: and a butterfly nut is screwed on the front side of the outer wall of the left penetrating rotating shaft and is tightly attached to the inner wall of the U-shaped block (1).

3. A mathematical education apparatus using computer multimedia as claimed in claim 1 or 2, wherein: the surface of the U-shaped block (1) is provided with a plurality of through holes.

4. The mathematical education apparatus using computer multimedia as claimed in claim 1, wherein: height-adjusting device (7) include that two sets separate integrative first U type piece (700) of taking spacing bolt of fixing on long rotation axis (5), the inner chamber of first U type piece (700) is fixed with first hand push rod (701) through spacing bolt, and is two sets of crossbeam (702) has been welded between the relative outer wall of first U type piece (700), the middle part of crossbeam (702) is fixed with low-speed just reverse motor (703), be connected through belt drive assembly (704) between the power input shaft of the motor shaft of low-speed just reverse motor (703) and first hand push rod (701).

5. The mathematical education apparatus using computer multimedia as claimed in claim 1, wherein: the height adjusting device (7) comprises two sets of second U-shaped blocks (705) which are integrally fixed on a long rotating shaft (5) at intervals and provided with limiting bolts, a second hand push rod (706) is fixed to the inner cavity of each second U-shaped block (705) through the limiting bolts, a vertical plate (707) is fixed to the outer wall of each second U-shaped block (705), the vertical plate (707) is connected with power input shafts of the two sets of second hand push rods (706) through a worm gear assembly (708), a speed increasing box (709) is fixed to the inner side of the vertical plate (707), a power output end of the speed increasing box (709) is connected with a worm through a bevel gear pair, an F-shaped support (710) is fixed to the outer wall of the speed increasing box (709) through the bolts, a second manual telescopic rod (711) with a rotary disc is connected to the side wall of the F-shaped support (710) through a bearing in a rotating mode, and the inner end of the second manual telescopic rod (711) is connected with a power input end of the speed increasing box (709 And (4) connecting.

6. The mathematical education apparatus using computer multimedia as claimed in claim 1, wherein: the clamping device (8) comprises a first straight pipe (800), two ends of the first straight pipe (800) are respectively screwed with a first blocking block (801), the center of the right side of the outer wall of the first straight pipe (800) is provided with a rectangular through groove (803) along the length direction, a graduated scale embedded in the surface of the first straight pipe (800) is arranged above the rectangular through groove (803), the front side and the rear side of the bottom of the first straight pipe (800) are respectively fixed with a first sleeve (802) with a fixing bolt, the inner cavity of the rectangular through groove (803) is penetrated and slidably inserted with two groups of T-shaped blocks (804), the outer end of each T-shaped block (804) is fixed with a first iron clamp (809), the inner wall of the first straight pipe (800) is fixed with a groove body (805) relative to the rectangular through groove (803), the inner surface of each T-shaped block (804) is fixed with a limiting pipe (806), the inner cavity of each limiting pipe (806) is slidably inserted with a moving, and a straight wheel (808) which is in sliding fit with the inner wall of the groove body (805) is fixed at the outer end of the movable rod (807).

7. The mathematical education apparatus using computer multimedia as claimed in claim 1, wherein: the clamping device (8) comprises a second straight pipe (810), second sleeves (811) with fixing bolts are fixed on the front side and the rear side of the bottom of the second straight pipe (810), a penetrating square groove (812) is arranged in the horizontal diameter direction of the second straight pipe (810), two groups of T-shaped rods (813) are inserted in the penetrating square groove (812), a first arc-shaped block (814) attached to the outer wall of the second straight pipe (810) is welded on the right side of the outer wall of each T-shaped rod (813), a second iron clamp (815) is fixed at the right end of the T-shaped rod (813), second blocking blocks (816) are screwed at the two ends of the second straight pipe (810), the left side of the outer wall of the T-shaped rod (813) is sleeved with a second arc-shaped block (817) in a sliding way, the inner wall of the second arc-shaped block (817) is connected with the outer surface of the second straight pipe (810) in a sliding way through a universal ball (818), an elastic piece (819) is sleeved between the outer surface of the second arc-shaped block (817) and the left end of the T-shaped rod (813).