CN111583756B

CN111583756B - Presentation device is used in multi-functional computer teaching

Info

Publication number: CN111583756B
Application number: CN202010487734.2A
Authority: CN
Inventors: 袁立; 谢俐; 陈晓余; 王雪
Original assignee: Chongqing Electric Power College
Current assignee: Chongqing Electric Power College
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2021-09-14
Anticipated expiration: 2040-06-02
Also published as: CN111583756A

Abstract

The invention discloses a multifunctional demonstration device for computer teaching, which comprises a bracket, a turnover device, a table plate, a back frame, a demonstration plate, auxiliary fixing devices, a fixed cabinet, a drawer and a rotating device, wherein the auxiliary fixing devices are arranged at the left end and the right end in the demonstration plate; through being provided with rotating device at the stationary cabinet top, install independent motor in rotating device, motor drive intermittent drive mechanism carries out work, and intermittent drive mechanism can drive the carousel at top and carry out intermittent type and rotate, and the effectual stable rotation that carries on in carousel top is placed to the solid model, conveniently assists in the teaching and models, and is effectual, and supplementary teaching goes on.

Description

Presentation device is used in multi-functional computer teaching

Technical Field

The invention relates to the field of teaching demonstration devices, in particular to a multifunctional demonstration device for computer teaching.

Background

Computer-aided teaching is a method and a technology for teaching activities under the assistance of a computer, discussing teaching contents, arranging teaching progress and carrying out teaching training with students in a conversation mode, teaching activities of classroom teaching and management are carried out by means of a computer, and the teaching activities mainly comprise teaching types, partial teaching types, problem solution types and the like.

When carrying out the in-service use at presentation device for computer teaching, because current presentation device is comparatively single, only adopt the cooperation of computer and some show data to demonstrate, lead to the student can not audio-visually study, functional relatively poor, place desk adoption fixed form, it is relatively poor to the supplementary effect of some three-dimensional courses of teaching, and can't lay when show paper data or fixed model, the bandwagon effect is relatively poor, when modeling to three-dimensional material object, the observation in the face of the entity object targets in place inadequately, need teacher's manual regulation, consume the manpower, cause teaching inefficiency.

Disclosure of Invention

Accordingly, in order to solve the above-mentioned disadvantages, the present invention provides a multifunctional computer-teaching demonstration apparatus.

The invention is realized in such a way, a multifunctional demonstration device for computer teaching is constructed, the device comprises a bracket, a table plate is arranged at the upper end of the inner side of the bracket, the lower end of the back surface of the bracket is fixed with a back frame, a demonstration plate is fixed at the upper end of the inner side of the back frame, the left side of the bracket is connected with a fixed cabinet, three groups of drawers are embedded at the front end in the fixed cabinet, a controller is arranged at the front end of the top of the fixed cabinet, the left side of the controller is connected with a power line, a pillar is vertically welded at the middle part of the rear end of the top of the fixed cabinet, the upper end of the outer diameter surface of the pillar is connected with a multi-angle connecting frame, the right end of the front end surface of the multi-angle connecting frame is fixed with an all-in-one machine through bolts, the top of the bracket is fixed with a turnover device, the inner side of the turnover device is connected with the table plate, auxiliary fixing devices are arranged at two ends of the middle part in the inner part of the demonstration plate, a rotating device is arranged at the top end of the fixed cabinet, turning device includes back of the body pole, fixed block, actuating mechanism, dwang, sliding sleeve, driving medium, push rod, mounting and rotates the piece, the back of the body pole top contacts with the table, the back of the body pole left and right sides is fixed with the fixed block, fixed block bottom and scaffold weldment are fixed, fixed block back left end is fixed with actuating mechanism, the middle part is provided with the dwang in the fixed block, dwang external diameter surface rear end has cup jointed the sliding sleeve, the sliding sleeve inboard meets with the driving medium, front end is articulated mutually with the push rod in the driving medium, front end and mounting are articulated in the push rod, the mounting inboard is rotated with table bottom both ends and is connected, the inboard front end of fixed block rotates with the table through rotating the piece and is connected.

Preferably, actuating mechanism includes casing, first motor, worm wheel and transfer line, terminal surface and fixed block welded fastening before the casing, casing back right-hand member is fixed through bolt and first motor, terminal surface output shaft runs through the casing and rotates with the worm and be connected before the first motor, worm left side and worm wheel intermeshing, the middle part is provided with the transfer line in the worm wheel, terminal surface runs through the casing in proper order and the fixed block front end meets with the dwang before the transfer line.

Preferably, supplementary fixing device includes protecting casing, fixed lid, rotates button, casting die, support column, spring, ratch, driven gear and drive gear, the protecting casing middle part meets with the demonstration board, the protecting casing back is fixed with fixed lid, the front end embedding has the rotation button in the protecting casing, the lower extreme stretches out there is the casting die in the protecting casing, the terminal surface is fixed with the support column before the casting die, it has cup jointed the spring to rotate the button back, the rear end cup joints at the ratch front end in the spring, ratch bottom and driven gear intermeshing, driven gear bottom front end and drive gear intermeshing, drive gear bottom left end is fixed with the casting die mutually.

Preferably, the rotating device comprises a support, an embedded groove, a rotary table, an intermittent transmission mechanism and a second motor, the bottom of the support is fixed to the top of the fixed cabinet, the embedded groove is formed in the middle of the support, the rotary table is arranged in the embedded groove, the intermittent transmission mechanism is arranged at the rear end of the support, the second motor is arranged at the rear end of the top of the intermittent transmission mechanism, and the second motor is electrically connected with the controller.

Preferably, the intermittent drive mechanism includes box, driving pulley, hold-in range, driven pulley, connecting shaft pole, rolling disc, poker rod, intermittent type rotating wheel and drive shaft, the rear end is provided with driving pulley in the box to middle part is inserted by second motor bottom output shaft in the driving pulley, driving pulley external diameter surface carries out synchronous rotation through hold-in range and driven pulley, middle part is provided with connecting shaft pole in the driven pulley to connecting shaft pole top inserts middle part in the rolling disc, the poker rod is installed to rolling disc bottom left end, the rolling disc front end is provided with intermittent type rotating wheel, middle part is provided with the drive shaft in the intermittent type rotating wheel, the drive shaft top is run through intermittent type rotating wheel and support top in proper order and is met with the carousel.

Preferably, the inner diameter surface of the sliding sleeve at the left end in the fixed block is provided with internal threads, the outer diameter surface of the rotating rod corresponding to the sliding sleeve is provided with external threads, and the inner diameter surface of the sliding sleeve at the left end in the fixed block is meshed with the rotating rod.

Preferably, the left end of the front end face of the shell is fixed with a mounting block, and the front end of the mounting block is fixed with the back face of the fixed cabinet.

Preferably, the rear end of the outer diameter surface of the rotating knob is threaded with an external thread, and the rotating knob is screwed into the front end in the protective shell.

Preferably, the lower right end of the pressing piece is arc-shaped, and a silica gel layer with the thickness of 2mm is bonded on the back of the pressing piece.

Preferably, a strip-shaped groove is formed in six ends of the intermittent rotation wheel, and the width of the strip-shaped groove in the intermittent rotation wheel is larger than that of the poke rod.

Preferably, the pressing member is made of stainless steel.

Preferably, the intermittent rotating wheel is made of alloy steel.

The invention has the following advantages: the invention provides a multifunctional demonstration device for computer teaching through improvement, compared with the same type of equipment, the multifunctional demonstration device has the following improvements:

the method has the advantages that: according to the multifunctional demonstration device for computer teaching, the turnover device is mounted on the side face of the table board, the turnover device is driven by the independent driving mechanism, and the motor is adopted in the driving mechanism to control worm and worm gear transmission, so that the turnover device can stably turn over the table board at an angle to match with teaching, and the multifunctional demonstration device for computer teaching is good in effect, stable in adjustment and convenient to operate.

The method has the advantages that: according to the multifunctional demonstration device for computer teaching, the auxiliary fixing devices are arranged at the left end and the right end in the demonstration board, the pressing parts at the lower ends of the auxiliary fixing devices can swing at multiple angles under driving, some data are effectively supported, the data can be conveniently fixed on the demonstration board when the pressing parts swing backwards, the effect is good, and manual supporting and fixing are not needed.

The method has the advantages that: according to the multifunctional demonstration device for computer teaching, the rotating device is arranged at the top of the fixed cabinet, the independent motor is installed in the rotating device, the motor drives the intermittent transmission mechanism to work, the intermittent transmission mechanism can drive the turntable at the top to rotate intermittently, the solid model is placed on the top of the turntable to effectively and stably rotate, the teaching is facilitated to be assisted in modeling, the effect is good, and the teaching is assisted in performing.

Drawings

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

FIG. 2 is a schematic view of the structure of the back side of the turnover device of the present invention;

FIG. 3 is a schematic view of the drive mechanism of the present invention;

FIG. 4 is a schematic view of the auxiliary fixture of the present invention;

FIG. 5 is a schematic view of the internal structure of the protective case of the present invention;

FIG. 6 is a schematic view of the construction of the rotating device of the present invention;

fig. 7 is a schematic structural diagram of the transmission mechanism of the invention.

Wherein: a bracket-1, a turnover device-2, a table-3, a back frame-4, a demonstration board-5, an auxiliary fixing device-6, a fixed cabinet-7, a drawer-8, a rotating device-9, a controller-10, a power cord-11, a support column-12, a multi-angle connecting frame-13, an integrated machine-14, a back rod-21, a fixed block-22, a driving mechanism-23, a rotating rod-24, a sliding sleeve-25, a transmission piece-26, a push rod-27, a fixed piece-28, a rotating piece-29, a shell-231, a first motor-232, a worm-233, a worm wheel-234, a transmission rod-235, a protective shell-61, a fixed cover-62, a rotating button-63, a pressing piece-64, a support column-65, a supporting rod-23, a fixed rod-21, a fixed block-23, a driving mechanism-23, a rotating rod-24, a rotating sleeve-25, a transmission piece-26, a push rod-27, a fixed piece-28, a rotating piece-29, a shell-231, a rotating rod-232, a rotating rod-233, a rotating rod-65, a rotating rod, a rotating mechanism, a rotating, The device comprises a spring-66, a toothed bar-67, a driven gear-68, a driving gear-69, a support-91, an embedded groove-92, a rotary disc-93, an intermittent transmission mechanism-94, a second motor-95, a box-941, a driving pulley-942, a synchronous belt-943, a driven pulley-944, a connecting shaft lever-945, a rotary disc-946, a poke rod-947, an intermittent rotary wheel-948, a driving shaft-949 and a mounting block-2311.

Detailed Description

The present invention will be described in detail below with reference to fig. 1 to 7, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.

Example one

Referring to fig. 1, the present invention provides a multi-functional demonstration device for computer teaching by improvement, including a support 1, a table 3 is provided at the upper end of the inner side of the support 1, the lower end of the back of the support 1 is fixed with a back frame 4, a demonstration board 5 is fixed at the upper end of the inner side of the back frame 4, the left side of the support 1 is connected with a fixed cabinet 7, three groups of drawers 8 are embedded at the front end of the fixed cabinet 7, a controller 10 is installed at the front end of the top of the fixed cabinet 7, the left side of the controller 10 is connected with a power line 11, a pillar 12 is vertically welded at the middle part of the rear end of the top of the fixed cabinet 7, the upper end of the outer diameter surface of the pillar 12 is connected with a multi-angle connecting frame 13, the right end of the front end of the multi-angle connecting frame 13 is fixed with an integrated machine 14 by bolts, the top of the support 1 is fixed with a turnover device 2, the inner side of the turnover device 2 is connected with the table 3, auxiliary fixing devices 6 are provided at the two ends of the middle part of the demonstration board 5, the middle part of the top end of the fixed cabinet 7 is provided with a rotating device 9.

Referring to fig. 2, the present invention provides a multi-functional demonstration apparatus for computer teaching through improvement, wherein the turning apparatus 2 comprises a back bar 21, a fixed block 22, a driving mechanism 23, a rotating bar 24, a sliding sleeve 25, a transmission member 26, a push bar 27, a fixed member 28 and a rotating member 29, the top of the back bar 21 contacts with the table plate 3, the left and right sides of the back bar 21 are fixed with the fixed block 22, the bottom of the fixed block 22 is welded and fixed with the bracket 1, the left end of the back surface of the fixed block 22 is fixed with the driving mechanism 23, the middle part in the fixed block 22 is provided with the rotating bar 24, the rear end of the outer diameter surface of the rotating bar 24 is sleeved with the sliding sleeve 25, the inner side of the sliding sleeve 25 is connected with the transmission member 26, the inner front end of the transmission member 26 is hinged with the push bar 27, the inner front end of the push bar 27 is hinged with the fixed member 28, the inner side of the fixed member 28 is rotatably connected with the two ends of the bottom of the table plate 3, the inner side of the fixed block 22 is rotatably connected with the table plate 3 through the rotating member 29, the internal diameter surface of the sliding sleeve 25 at the left end in the fixed block 22 is lathed with internal threads, the external diameter surface of the rotating rod 24 corresponding to the sliding sleeve 25 is lathed with external threads, the internal diameter surface of the sliding sleeve 25 at the left end in the fixed block 22 is meshed with the rotating rod 24, the sliding sleeve 25 is effectively rotated, and the sliding sleeve 25 is enabled to move back and forth.

Referring to fig. 3, the present invention provides a multifunctional demonstration apparatus for computer teaching by improvement, wherein the driving mechanism 23 includes a housing 231, a first motor 232, a worm 233, a worm wheel 234 and a transmission rod 235, the front end surface of the housing 231 is welded and fixed to the fixing block 22, the right end of the back surface of the housing 231 is fixed to the first motor 232 by a bolt, the output shaft of the front end surface of the first motor 232 penetrates through the housing 231 and is rotatably connected to the worm 233, the left side of the worm 233 is engaged with the worm wheel 234, the transmission rod 235 is disposed in the middle of the worm wheel 234, the front end surface of the transmission rod 235 penetrates through the housing 231 and the front end of the fixing block 22 in sequence and is connected to the rotation rod 24, the left end of the front end surface of the housing 231 is fixed to a mounting block 2311, and the front end of the mounting block 2311 is fixed to the back surface of the fixing cabinet 7, so that the connection is stable and the supporting effect is good.

Referring to fig. 4 and 5, the present invention provides a multi-functional demonstration apparatus for computer teaching by improvement, the auxiliary fixing device 6 includes a protective casing 61, a fixing cover 62, a rotating button 63, a pressing member 64, a supporting column 65, a spring 66, a rack 67, a driven gear 68 and a driving gear 69, the middle part of the protective casing 61 is connected with the demonstration board 5, the back of the protective casing 61 is fixed with the fixing cover 62, the front end of the protective casing 61 is embedded with the rotating button 63, the rear end of the outer diameter surface of the rotating button 63 is threaded with an external thread, the rotating button 63 is screwed into the front end of the protective casing 61 to facilitate stable entry and prevent rotation, the pressing member 64 is extended out from the inner lower end of the protective casing 61, the supporting column 65 is fixed on the front end surface of the pressing member 64, the back of the rotating button 63 is sleeved with the spring 66, the rear end of the spring 66 is sleeved on the front end of the rack 67, the bottom of the rack 67 is engaged with the driven gear 68, the front end of the bottom of the driven gear 68 is engaged with the driving gear 69, drive gear 69 bottom left end is fixed mutually with casting die 64, and casting die 64 right side lower extreme is the arc form to casting die 64 back bonds and has one deck thickness to be 2mm silica gel layer, and frictional force is big, and the fixity is good, and casting die 64 adopts stainless steel, prevents to use for a long time and leads to rustting.

Referring to fig. 6, the present invention provides a multifunctional demonstration apparatus for computer teaching by improvement, wherein the rotation device 9 includes a support 91, an insertion groove 92, a turntable 93, an intermittent transmission mechanism 94 and a second motor 95, the bottom of the support 91 is fixed on the top of the fixing cabinet 7, the middle part of the support 91 is provided with the insertion groove 92, the turntable 93 is arranged in the insertion groove 92, the rear end of the support 91 is provided with the intermittent transmission mechanism 94, the rear end of the top of the intermittent transmission mechanism 94 is provided with the second motor 95, and the second motor 95 is electrically connected with the controller 10.

Referring to fig. 7, the present invention provides a multifunctional demonstration apparatus for computer teaching by improvement, wherein the intermittent transmission mechanism 94 includes a housing 941, a driving pulley 942, a synchronous belt 943, a driven pulley 944, a connecting shaft lever 945, a rotary disc 946, a poking rod 947, an intermittent rotary wheel 948 and a driving shaft 949, the driving pulley 942 is disposed at the rear end of the housing 941, the middle of the driving pulley 942 is inserted by the output shaft of the bottom of the second motor 95, the outer diameter surface of the driving pulley 942 rotates synchronously with the driven pulley 944 via the synchronous belt 943, the connecting shaft lever 945 is disposed at the middle of the driven pulley 944, the top of the connecting shaft lever 945 is inserted into the middle of the rotary disc 946, the poking rod 947 is mounted at the left end of the bottom of the rotary disc 946, the intermittent rotary disc 946 is disposed at the front end of the rotary disc 946, a strip-shaped groove is disposed at six ends of the intermittent rotary wheel 948, and the width of the strip-shaped groove in the intermittent rotary wheel 948 is greater than the width of the poking rod 947, be convenient for poker rod 947 stably stirs intermittent type rotation wheel 948, intermittent type rotates wheel 948 and adopts alloy steel material, and the durability is strong, and intensity is high, and intermittent type rotates wheel 948 interior middle part and is provided with drive shaft 949, and drive shaft 949 top runs through intermittent type and rotates wheel 948 and support 91 top and meet with carousel 93 in proper order.

Example two

The invention provides a multifunctional demonstration device for computer teaching through improvement, a sealing cover is arranged at the bottom of a shell 231, and the shell 231 and the sealing cover are fixed through bolts, so that a user can effectively and conveniently check and maintain the inside of the multifunctional demonstration device; the lower end in the protective shell 61 is open, and the upper end of the pressing piece 64 is arranged at the opening position, so that the pressing piece 64 can effectively swing at the opening position without being blocked; three groups of arc-shaped grooves are formed in the upper end of the support column 65, so that data can be supported conveniently, and the stability is good; the outer diameter surface of the intermittent rotation wheel 948 is provided with six groups of arc-shaped grooves which are separated by strip-shaped grooves, so that the intermittent rotation wheel is conveniently matched with the rotating disc 946 at the left end.

The invention provides a multifunctional demonstration device for computer teaching through improvement, which has the following working principle;

firstly, when the device needs to be used, the device is firstly placed at a position where the device needs to be used, the position needs to be horizontal, then a power line 11 is connected to an external power supply, so that electric energy needed by the operation of equipment can be provided, and then the equipment can be controlled through a controller 10;

secondly, the teaching can be started by starting the integrated machine 14, the multi-angle connecting frame 13 connected to the back of the integrated machine 14 can conveniently adjust the angle of the integrated machine, a keyboard and a mouse can be placed on the table plate 3, and when a direct drawing peripheral needs to be placed, the angle of the table plate 3 needs to be adjusted;

thirdly, the first motor 232 is started to work, an output shaft at the front end of the first motor 232 drives the worm 233 to rotate, then the worm 233 enables the worm wheel 234 to rotate, then the transmission rod 235 in the middle of the inside of the worm wheel 234 enables the rotating rod 24 at the front end to rotate, then the sliding sleeve 25 on the outer diameter surface of the rotating rod 24 pushes forwards, then the sliding sleeve 25 enables the push rod 27 to move upwards through the transmission piece 26, then the push rod 27 can jack up the table plate 3 at the top to realize angle turnover, and the rotating piece 29 at the front end outside the table plate 3 can rotate along with the rotating rod to provide stability for the front end of the table plate 3;

fourthly, when the demonstration data is required to be displayed on the demonstration board 5, the data can be fixed by using a magnet or adhered, but when some models or paperboards are required to be supported, the models or paperboards can be placed at the top of the supporting column 65, then a user rotates the rotating button 63, the rotating button 63 can be pushed inwards, the internal spring 66 acts on the toothed rod 67, then the driven gear 68 can be driven by the bottom of the toothed rod 67, then the driven gear 68 rotates, the driving gear 69 at the bottom rotates, then the driving gear 69 can drive the pressing piece 64 to swing, so that the display angle is adjusted, or when the paperboards are required to be fixed on the demonstration board 5, the rotating button 63 is reversed, so that the pressing piece 64 can move towards the back, and the paperboards can be firmly fixed on the demonstration board 5;

fifthly, when the teaching of three-dimensional physical modeling needs to be carried out, need use the assistance of physical model, can place carousel 93 top with the model, then start second motor 95 and carry out work, second motor 95 bottom output shaft makes driving pulley 942 rotate, drive driven pulley 944 through hold-in range 943 and rotate after that, driven pulley 944 can make the connecting shaft pole 945 at middle part rotate after that, connecting shaft pole 945 top's rolling disc 946 rotates, then rolling disc 946 carries out intermittent shifting through poker rod 947 to the intermittent type of front end wheel 948, intermittent type can be realized to the wheel 948 that rotates, then intermittent type rotates the wheel 948 middle part and lets the carousel 93 at top rotate through drive shaft 949, can make the physical model at top carry out stable intermittent type and rotate, come the efficient to assist the demonstration to the teaching.

The invention provides a multifunctional demonstration device for computer teaching through improvement, wherein the side surface of a table plate 3 is provided with a turnover device 2, the turnover device 2 is driven by an independent driving mechanism 23, and the driving mechanism 23 is internally driven by a worm 233 and a worm wheel 234 controlled by a motor, so that the turnover device 2 can stably turn over the table plate 3 at an angle to match with teaching, and the multifunctional demonstration device has good effect, stable adjustment and convenient operation; the auxiliary fixing devices 6 are arranged at the left end and the right end in the demonstration board 5, the pressing pieces 64 at the lower ends of the auxiliary fixing devices 6 can swing at multiple angles under driving, some data are effectively supported, and the data can be conveniently fixed on the demonstration board 5 when swinging backwards again, so that the effect is good, and manual supporting and fixing are not needed; through being provided with rotating device 9 at 7 tops of stationary cabinet, install independent motor in rotating device 9, motor drive intermittent transmission mechanism 94 carries out work, and intermittent transmission mechanism 94 can drive the carousel 93 at top and carry out intermittent type and rotate, and the effectual rotation that stabilizes in carousel 93 top is placed to the solid model, conveniently assists in the teaching and models, and is effectual, and supplementary teaching goes on.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a multi-functional presentation device for computer teaching, includes support (1), support (1) inboard upper end is provided with table (3), support (1) back lower extreme is fixed mutually with back of the body frame (4), back of the body frame (4) inboard upper end is fixed with demonstration board (5), support (1) left side is connected with stationary cabinet (7), three groups of drawers (8) are embedded to the front end in stationary cabinet (7), stationary cabinet (7) top front end is installed controller (10), controller (10) left side is connected with power cord (11), vertical welding has pillar (12) in stationary cabinet (7) top rear end middle part, pillar (12) external diameter surface upper end is connected with multi-angle link (13), multi-angle link (13) preceding terminal surface right-hand member is fixed with all-in-one machine (14) through the bolt;

the method is characterized in that: still include turning device (2), supplementary fixing device (6) and rotating device (9), support (1) top is fixed with turning device (2) to turning device (2) inboard meets with table (3), middle part both ends are provided with supplementary fixing device (6) in demonstration board (5), fixed cabinet (7) top middle part is provided with rotating device (9), turning device (2) include back of the body pole (21), fixed block (22), actuating mechanism (23), dwang (24), slip cap (25), driving medium (26), push rod (27), mounting (28) and rotation piece (29), back of the body pole (21) top contacts with table (3), the back of the body pole (21) left and right sides is fixed with fixed block (22), fixed block (22) bottom and support (1) welded fastening, fixed block (22) back of the body left end is fixed with actuating mechanism (23), middle part is provided with dwang (24) in fixed block (22), dwang (24) external diameter surface rear end has cup jointed slip cap (25), slip cap (25) inboard meets driving medium (26), the front end is articulated mutually with push rod (27) in driving medium (26), the front end is articulated with mounting (28) in push rod (27), mounting (28) inboard is rotated with table (3) bottom both ends and is connected, fixed block (22) inboard front end is rotated with table (3) through rotating piece (29) and is connected, supplementary fixing device (6) include protecting shell (61), fixed lid (62), rotate button (63), casting die (64), support column (65), spring (66), rack bar (67), driven gear (68) and drive gear (69), protecting shell (61) middle part meets with demonstration board (5), the back of the protective shell (61) is fixed with a fixed cover (62), the front end of the protective shell (61) is embedded with a rotating button (63), the lower end of the protective shell (61) extends out of a pressing piece (64), the front end face of the pressing piece (64) is fixed with a support column (65), the back of the rotating button (63) is sleeved with a spring (66), the rear end of the spring (66) is sleeved at the front end of a toothed rod (67), the bottom of the toothed rod (67) is meshed with a driven gear (68), the front end of the bottom of the driven gear (68) is meshed with a driving gear (69), the left end of the bottom of the driving gear (69) is fixed with the pressing piece (64), the rotating device (9) comprises a support (91), an embedded groove (92), a rotary disc (93), an intermittent transmission mechanism (94) and a second motor (95), the bottom of the support (91) is fixed at the top of a fixed cabinet (7), an embedded groove (92) is formed in the middle of the interior of the support (91), a rotary disc (93) is arranged in the embedded groove (92), an intermittent transmission mechanism (94) is arranged at the rear end of the interior of the support (91), a second motor (95) is arranged at the rear end of the top of the intermittent transmission mechanism (94), and the second motor (95) is electrically connected with the controller (10).

2. A multi-function computer teaching demonstration apparatus according to claim 1 further comprising: actuating mechanism (23) include casing (231), first motor (232), worm (233), worm wheel (234) and transfer line (235), terminal surface and fixed block (22) welded fastening before casing (231), casing (231) back right-hand member is fixed through bolt and first motor (232), terminal surface output shaft runs through casing (231) and is rotated with worm (233) and be connected before first motor (232), worm (233) left side and worm wheel (234) intermeshing, middle part is provided with transfer line (235) in worm wheel (234), the terminal surface runs through casing (231) and fixed block (22) front end in proper order before transfer line (235) and meets with dwang (24).

3. A multi-function computer teaching demonstration apparatus according to claim 1 further comprising: the intermittent transmission mechanism (94) comprises a box body (941), a driving pulley (942), a synchronous belt (943), a driven pulley (944), a connecting shaft rod (945), a rotating disc (946), a poke rod (947), an intermittent rotating wheel (948) and a driving shaft (949), wherein the driving pulley (942) is arranged at the inner rear end of the box body (941), the middle part of the inner part of the driving pulley (942) is inserted into the output shaft at the bottom of a second motor (95), the outer diameter surface of the driving pulley (942) synchronously rotates with the driven pulley (944) through the synchronous belt (943), the connecting shaft rod (945) is arranged at the middle part of the inner part of the driven pulley (944), the top part of the connecting shaft rod (945) is inserted into the middle part of the rotating disc (946), the moving rod (947) is installed at the left end of the bottom of the rotating disc (946), the intermittent rotating wheel (948) is arranged at the front end of the poke rotating disc (946), the driving shaft (949) is arranged at the middle part of the inner part of the intermittent rotating wheel (948), the top of the driving shaft (949) penetrates through the intermittent rotating wheel (948) and the top of the support (91) in sequence and is connected with the rotary disc (93).

4. A multi-function computer teaching demonstration apparatus according to claim 1 further comprising: the internal thread is turned to sliding sleeve (25) internal diameter surface of left end in fixed block (22) to dwang (24) external diameter surface car that sliding sleeve (25) correspond has the external thread, sliding sleeve (25) internal diameter surface and dwang (24) looks interlock of left end in fixed block (22).

5. A multi-function computer teaching demonstration apparatus according to claim 2 further comprising: the left end of the front end face of the shell (231) is fixed with a mounting block (2311), and the front end of the mounting block (2311) is fixed with the back of the fixed cabinet (7).

6. A multi-function computer teaching demonstration apparatus according to claim 1 further comprising: the rear end of the outer diameter surface of the rotating button (63) is provided with an external thread, and the rotating button (63) is screwed into the front end in the protective shell (61).

7. A multi-function computer teaching demonstration apparatus according to claim 1 further comprising: the right lower end of the pressing piece (64) is arc-shaped, and a silica gel layer with the thickness of 2mm is bonded on the back surface of the pressing piece (64).

8. A multi-function computer teaching demonstration apparatus according to claim 3 further comprising: a strip-shaped groove is formed in six ends of the intermittent rotating wheel (948), and the width of the strip-shaped groove in the intermittent rotating wheel (948) is larger than that of the poke rod (947).