CN107568904A

CN107568904A - Multifunctional all dais is used in one kind teaching

Info

Publication number: CN107568904A
Application number: CN201711025000.7A
Authority: CN
Inventors: 赵顺豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-10-27
Filing date: 2017-10-27
Publication date: 2018-01-12

Abstract

The invention discloses a kind of teaching multifunctional all dais, including base, the bottom of the base is fixedly connected with symmetrical two U-boards, the front of the U-board is connected with the latch through U-board, and the outer surface of the latch is fixedly connected with the roller positioned at U-board inner surface.The present invention is by setting stepper motor, screw rod and expansion link are so as to playing a part of that dais is adjusted using height, and then the faculty of different heights can adjust the effect that most suitable height is used when using dais, reach and be more suitable for the effect that owner uses, by setting synchronous motor, rotating shaft and spiral fan blow wind action so as to play, reach and work long hours when body is perspired and can use in faculty, it ensure that faculty's body will not perspire because working long hours, working condition by lifting faculty reaches the effect of lifting quality of instruction.

Description

Multifunctional all dais is used in one kind teaching

Technical field

The present invention relates to Lectern for teaching technical field, is specially that multifunctional all dais is used in a kind of teaching.

Background technology

Teaching is the distinctive personnel training activity of a kind of mankind that the religion of teacher and student are formed, and passes through this work Dynamic, teacher is purposeful, planned and in an organized way guiding student study and grasp cultural and technical knowledge and technical ability, promotion student are plain Matter improves, and them is turned into the people required for society, dais, refers to estrade above ground level, teaches or the people of lecture stands above Say, and the proper noun of teacher.

But existing Lectern for teaching when in use because faculty be the mobile textbook angle caused on dais not It is easy to the situation observed and adjusted, and faculty can perspire when being worked long hours on dais influences teaching state, and Dark sometimes above dais, the observation of faculty is directly affects, and existing teaching dais height cannot Regulation, when in use all can be inconvenient for the different faculty of height, so for a kind of more work(to solve the above problems Energy Lectern for teaching is most important.

The content of the invention

(1) technical problem solved

In view of the shortcomings of the prior art, the invention provides a kind of teaching multifunctional all dais, solves function The problem of less inconvenience uses.

(2) technical scheme

To achieve the above object, the present invention provides following technical scheme：Multifunctional all dais is used in one kind teaching, including Base, the bottom of the base are fixedly connected with symmetrical two U-boards, and the front of the U-board, which is connected with, to be passed through The latch of U-board is worn, the outer surface of the latch is fixedly connected with the roller positioned at U-board inner surface, the interior table of the U-board The wheel that face is fixedly connected with directly over roller is stopped, and the first headstock, institute are fixedly connected with the inwall of the base bottom State and stepper motor is fixedly connected with the inwall of the first headstock bottom, be fixedly connected on the inwall of the first headstock bottom Have and be located at stepper motor both sides and symmetrical two stocks, the one end of the stock away from the first headstock bottom interior wall, which is fixed, to be connected It is connected to pin, the output end at the top of the stepper motor is fixedly connected with screw rod, and the screw rod exports away from stepper motor The threaded one end at end is connected with loop bar, and the one end of the loop bar away from screw rod is fixedly connected with movable plate, the movable plate The left and right sides is socketed in the outer surface of stock, and side of the movable plate away from loop bar is fixedly connected with expansion link, described flexible The one end of bar away from movable plate is fixedly connected with stage body through the first headstock, and the front of the stage body offers multiple installations Groove, the inner surface of the mounting groove are fixedly connected with synchronous motor, and the synchronous motor is defeated away from mounting groove inner surface side Go out end and be fixedly connected with rotating shaft, the one end of the rotating shaft away from synchronous motor output end is fixedly connected with Rotational Cylindrical, the rotation The outer surface of post is fixedly connected with multiple spiral fans, and the inner surface of the mounting groove is fixedly connected with positioned at spiral fan front Safety guard, the positive standing groove of connection is offered at the top of the stage body, on the inner surface at left and right sides of the standing groove Symmetrical two batteries are fixedly connected with, two battery sides close to each other are fixedly connected with lamp joint, and the light fixture connects Side of the head away from battery is fixedly connected with fluorescent tube, and the second headstock is fixedly connected with the inner surface for placing trench bottom, It is fixedly connected with motor on the inwall of the second headstock bottom, it is fixed on the inwall of the second headstock bottom to connect It is connected to and is located at motor both sides and symmetrical two gag lever posts, the one end of the gag lever post away from the second headstock bottom interior wall It is fixedly connected with locating rod, the output end at the top of the motor is fixedly connected with threaded rod, and the threaded rod is away from driving The threaded one end of motor output end is connected with mobile bar, and the one end of the mobile bar away from threaded rod is fixedly connected with limiting plate, It is socketed at left and right sides of the limiting plate on the outer surface of gag lever post, side of the limiting plate away from mobile bar is fixedly connected There is adjusting rod, the one end of the adjusting rod away from limiting plate is connected with driven turntable through the second headstock, described driven The outer surface of rotating disk is fixedly connected with driven gear, is fixedly connected with the top of the driven turntable and holds plate, described to hold plate Front be fixedly connected with locating piece, be fixedly connected with the inner surface for placing trench bottom positioned at the second headstock back side Asynchronous machine, the output end at the top of the asynchronous machine are fixedly connected with rotating bar, and the rotating bar exports away from asynchronous machine The one end at end is fixedly connected with active rotating disk, and the outer surface of the active rotating disk is fixedly connected with driving gear, the driving tooth Connection is engaged between wheel and driven gear.

Preferably, a diameter of five centimetres of the roller, the thickness of the roller is one centimetre, and the length of the latch is Six centimetres.

Preferably, the outer surface of the latch and the contact position of flexible rod outer surface and the first headstock are provided with resistance to Mill pad, the outer surface that the wheel is stopped are provided with slipmat with the upper surface for holding plate.

Preferably, the length of the safety guard is 15 centimetres, and the thickness of the safety guard is one centimetre.

Preferably, the quantity of the synchronous motor is six, and six synchronous motor rectangular arrays, the number of the fluorescent tube Measure as five, and five fluorescent tube rectangular arrays.

Preferably, the quantity of the spiral fan is five, and five spiral fan circular arrays, the driven gear Quantity be ten, and ten driven gear circular arrays, the quantity of the driving gear is eight, and eight driving gears Circular array.

Preferably, the upper surface for holding plate is inclined-plane, and the upper surface for holding plate and horizontal plane are in 30-degree angle.

Preferably, the connected mode between the U-board and the first headstock and base for welding, the driven turntable and Locating piece and the connected mode held between plate are also welding.

(3) beneficial effect

Compared with prior art, it is of the invention：Teaching multifunctional all dais.Possesses following beneficial effect：

(1), by setting asynchronous machine, driving gear, driven gear and holding plate so as to play the sight to textbook of imparting knowledge to students The effect that angle is adjusted is seen, by can easily adjust the viewing angle of teaching textbook, has further facilitated teaching people The effect of observation of the member when being write on blackboard, so as to ensure that faculty from most suitable angle enter teaching textbook The effect of row viewing, reach the effect for teaching of being more convenient for.

(2) what height was adjusted, is used to dais so as to play by setting stepper motor, screw rod and expansion link Effect, and then the faculty of different heights can adjust the effect that most suitable height is used when using dais Fruit, so as to reach the reasonability that increase dais uses, reach and be more suitable for the effect that owner uses.

(3), by setting synchronous motor, rotating shaft and spiral fan to blow wind action so as to play, reach in faculty The body that works long hours can use when perspiring, and ensure that faculty's body will not perspire because working long hours, reaching makes religion Scholar person can be with the continuous firing longer time, and the working condition by lifting faculty reaches the effect of lifting quality of instruction.

(4), play a part of illuminating dais by setting battery, lamp joint and fluorescent tube, ensure that on dais Suitable brightness, and then ensure that faculty can preferably observe the effect of teaching textbook, by more easily observing religion The effect that textbook reaches lifting quality of instruction is learned, so as to reach the effect for being easy to faculty's observation to use.

(5), the placing height for textbook of imparting knowledge to students is adjusted so as to play by setting motor, threaded rod and adjusting rod The effect of section, and then more facilitate the effect used in faculty's teaching process, it is more beneficial for observing during faculty's writing Effect.

Brief description of the drawings

Fig. 1 is schematic structural view of the invention；

Fig. 2 is the first headstock internal structure schematic diagram of the invention；

Fig. 3 is the second headstock internal structure schematic diagram of the invention；

Fig. 4 is asynchronous machine structural representation of the present invention.

In figure：1 base, 2U shapes plate, 3 latches, 4 rollers, 5 wheel brakes, 6 first headstocks, 7 stepper motors, 8 stocks, 9 gears Bar, 10 screw rods, 11 loop bars, 12 movable plates, 13 expansion links, 14 stage bodies, 15 mounting grooves, 16 synchronous motors, 17 rotating shafts, 18 rotate Post, 19 spiral fans, 20 safety guards, 21 standing grooves, 22 batteries, 23 lamp joints, 24 fluorescent tubes, 25 second headstocks, 26 are driven Dynamic motor, 27 gag lever posts, 28 locating rods, 29 threaded rods, 30 mobile bars, 31 limiting plates, 32 adjusting rods, 33 driven turntables, 34 from Moving gear, 35 hold plate, 36 locating pieces, 37 asynchronous machines, 38 rotating bars, 39 active rotating disks, 40 driving gears.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.

As Figure 1-4, the present invention provides a kind of technical scheme：Multifunctional all dais, including bottom are used in one kind teaching Seat 1, the bottom of base 1 is fixedly connected with symmetrical two U-boards 2, and the front of U-board 2 is connected with through U-board 2 latch 3, the outer surface of latch 3 are fixedly connected with the roller 4 positioned at the inner surface of U-board 2, a diameter of five centimetres of roller 4, The thickness of roller 4 is one centimetre, and the length of latch 3 is six centimetres, the inner surface of U-board 2 be fixedly connected with positioned at roller 4 just on The wheel of side stops 5, is fixedly connected with the first headstock 6 on the inwall of the bottom of base 1, fixed on the inwall of the bottom of the first headstock 6 Stepper motor 7 is connected with, is fixedly connected with the inwall of the bottom of the first headstock 6 positioned at the both sides of stepper motor 7 and symmetrical two Individual stock 8, the one end of stock 8 away from the bottom interior wall of the first headstock 6 are fixedly connected with pin 9, the output at the top of stepper motor 7 End is fixedly connected with screw rod 10, and threaded one end of the screw rod 10 away from the output end of stepper motor 7 is connected with loop bar 11, loop bar 11 One end away from screw rod 10 is fixedly connected with movable plate 12, and the left and right sides of movable plate 12 is socketed in the outer surface of stock 8, moves Dynamic side of the plate 12 away from loop bar 11 is fixedly connected with expansion link 13, by setting stepper motor 7, screw rod 10 and expansion link 13 So as to play a part of that dais is adjusted using height, and then the faculty of different heights is when using dais The effect that most suitable height is used can be adjusted, so as to reach the reasonability that increase dais uses, reaches and is more suitable for The effect that owner uses, the one end of expansion link 13 away from movable plate 12 are fixedly connected with stage body 14, platform through the first headstock 6 The front of body 14 offers multiple mounting grooves 15, and the inner surface of mounting groove 15 is fixedly connected with synchronous motor 16, synchronous motor 16 Output end away from the inner surface side of mounting groove 15 is fixedly connected with rotating shaft 17, rotating shaft 17 away from the output end of synchronous motor 16 one End is fixedly connected with Rotational Cylindrical 18, and the outer surface of Rotational Cylindrical 18 is fixedly connected with multiple spiral fans 19, by setting synchronous electricity Machine 16, rotating shaft 17 and spiral fan 19 blow wind action so as to play, and reach when faculty works long hours body perspiration It can use, ensure that faculty's body will not perspire because working long hours, reaching makes faculty can be with continuous firing more For a long time, the effect of lifting quality of instruction is reached by lifting the working condition of faculty, the inner surface of mounting groove 15 is fixed It is connected with and is located at the positive safety guard 20 of spiral fan 19, the length of safety guard 20 is 15 centimetres, safety guard 20 Thickness is one centimetre, and the top of stage body 14, which offers, connects positive standing groove 21, on the inner surface of the left and right sides of standing groove 21 Symmetrical two batteries 22 are fixedly connected with, two sides close to each other of battery 22 are fixedly connected with lamp joint 23, light fixture Side of the joint 23 away from battery 22 is fixedly connected with fluorescent tube 24, by set battery 22, lamp joint 23 and fluorescent tube 24 so as to Play a part of illuminating dais, ensure that suitable brightness on dais, and then ensure that faculty can preferably observe The effect of teaching textbook, the effect of lifting quality of instruction is reached by more easily observing teaching textbook, is easy to teach so as to reach The effect that personal observations use is learned, the quantity of synchronous motor 16 is six, and six rectangular arrays of synchronous motor 16, fluorescent tube 24 Quantity be five, and five rectangular arrays of fluorescent tube 24, be fixedly connected with the second power on the inner surface of the bottom of standing groove 21 Case 25, is fixedly connected with motor 26 on the inwall of the bottom of the second headstock 25, solid on the inwall of the bottom of the second headstock 25 Surely it is connected with positioned at the both sides of motor 26 and symmetrical two gag lever posts 27, gag lever post 27 is away from the bottom of the second headstock 25 One end of wall is fixedly connected with locating rod 28, and the output end at the top of motor 26 is fixedly connected with threaded rod 29, threaded rod 29 Threaded one end away from the output end of motor 26 is connected with mobile bar 30, and the one end of mobile bar 30 away from threaded rod 29, which is fixed, to be connected Limiting plate 31 is connected to, the left and right sides of limiting plate 31 is socketed on the outer surface of gag lever post 27, and limiting plate 31 is away from mobile bar 30 Side be fixedly connected with adjusting rod 32, by motor 26, threaded rod 29 and adjusting rod 32 are set so as to play to teaching The effect that the placing height of textbook is adjusted, and then more facilitate the effect used in faculty's teaching process, more favorably The effect observed when faculty writes, the one end of adjusting rod 32 away from limiting plate 31 are flexibly connected through the second headstock 25 There is driven turntable 33, the outer surface of driven turntable 33 is fixedly connected with driven gear 34, and the top of driven turntable 33 is fixedly connected Plate 35 is held, the outer surface and the outer surface of expansion link 13 of latch 3 and the contact position of the first headstock 6 are provided with wear-resisting Pad, the outer surface of wheel brake 5 are provided with slipmat with the upper surface for holding plate 35, and the upper surface for holding plate 35 is inclined-plane, is held The upper surface of plate 35 and horizontal plane are in 30-degree angle, and the front for holding plate 35 is fixedly connected with locating piece 36, U-board 2 and first Connected mode between headstock 6 and base 1 is welding, driven turntable 33 and locating piece 36 and holds the connection side between plate 35 Formula is also welding, and the asynchronous machine 37 positioned at the back side of the second headstock 25 is fixedly connected with the inner surface of the bottom of standing groove 21, The output end at the top of asynchronous machine 37 is fixedly connected with rotating bar 38, and the one end of rotating bar 38 away from the output end of asynchronous machine 37 is consolidated Surely active rotating disk 39 is connected with, the outer surface of active rotating disk 39 is fixedly connected with driving gear 40, and the quantity of spiral fan 19 is Five, and five circular arrays of spiral fan 19, the quantity of driven gear 34 is ten, and ten driven gears 34 are in a ring Array, the quantity of driving gear 40 is eight, and eight circular arrays of driving gear 40, by setting asynchronous machine 37, master Moving gear 40, driven gear 34 and hold plate 35 so as to play a part of to impart knowledge to students textbook viewing angle be adjusted, pass through The viewing angle of teaching textbook can be easily adjusted, has further facilitated the effect of observation of the faculty when being write on blackboard Fruit, so as to ensure that faculty from most suitable angle to the effect watched of teaching textbook, reach and be more convenient for teaching Effect, connection is engaged between driving gear 40 and driven gear 34.

In use, by controlling the work of fluorescent tube 24 to reach the control to illuminating effect, by controlling stepper motor 7 to reach The effect that dais is highly adjusted, it is asynchronous by controlling by controlling synchronous motor 16 to reach the effect to blowing control Motor 37 is so as to reach the effect of controlled observation angle, by controlling motor 26 to be controlled so as to reach to height of observation Effect, so as to reach multi-functional purpose easy to use.

It can to sum up obtain, (1), the present invention are by setting asynchronous machine 37, driving gear 40, driven gear 34 and holding plate 35 So as to play a part of that the viewing angle for textbook of imparting knowledge to students is adjusted, by the viewing angle that can easily adjust teaching textbook Degree, the effect of observation of the faculty when being write on blackboard is further facilitated, so as to ensure that faculty from most suitable Angle carry out the effect for the effect watched of teaching textbook, reaching teaching of being more convenient for.

(2), the present invention uses height so as to play by setting stepper motor 7, screw rod 10 and expansion link 13 to dais The effect being adjusted is spent, and then the faculty of different heights can adjust most suitable height when using dais The effect used, so as to reach the reasonability that increase dais uses, reach and be more suitable for the effect that owner uses.

(3), the present invention is reached by setting synchronous motor 16, rotating shaft 17 and spiral fan 19 to blow wind action so as to play Work long hours when body is perspired and can use in faculty, ensure that faculty's body will not be because working long hours out Sweat, reaching makes faculty can be with the continuous firing longer time, and the working condition by lifting faculty reaches lifting teaching The effect of quality.

(4), the present invention plays a part of illuminating dais by setting battery 22, lamp joint 23 and fluorescent tube 24, Suitable brightness on dais is ensure that, and then ensure that faculty can preferably observe the effect of teaching textbook, by more Convenient observation teaching textbook reaches the effect of lifting quality of instruction, so as to reach the effect for being easy to faculty's observation to use.

(5), the present invention is put by setting motor 26, threaded rod 29 and adjusting rod 32 so as to play to teaching textbook The effect that height is adjusted is put, and then more facilitates the effect used in faculty's teaching process, is more beneficial for the people that imparts knowledge to students The effect observed during member's writing.

The electric elements occurred in this article electrically connect with the main controller and 220W civil powers in the external world, and main controller can be meter Calculation machine etc. plays the conventionally known equipment of control.

It should be noted that herein, such as first and second or the like relational terms are used merely to a reality Body or operation make a distinction with another entity or operation, and not necessarily require or imply and deposited between these entities or operation In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to Nonexcludability includes, so that process, method, article or equipment including a series of elements not only will including those Element, but also the other element including being not expressly set out, or it is this process, method, article or equipment also to include Intrinsic key element.In the absence of more restrictions, the key element limited by sentence " including a reference structure ", is not arranged Except other identical element in the process including the key element, method, article or equipment being also present.

Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding And modification, the scope of the present invention is defined by the appended.

Claims

1. multifunctional all dais, including base (1) are used in one kind teaching, it is characterised in that：The bottom of the base (1) is fixed Symmetrical two U-boards (2) are connected with, the front of the U-board (2) is connected with the latch through U-board (2) (3), the outer surface of the latch (3) is fixedly connected with the roller (4) positioned at U-board (2) inner surface, the U-board (2) it is interior Surface is fixedly connected with wheel directly over roller (4) and stopped (5), and the is fixedly connected with the inwall of base (1) bottom One headstock (6), stepper motor (7), first headstock are fixedly connected with the inwall of the first headstock (6) bottom (6) it is fixedly connected with the inwall of bottom remote positioned at stepper motor (7) both sides and symmetrical two stocks (8), the stock (8) One end from the first headstock (6) bottom interior wall is fixedly connected with pin (9), and the output end at the top of the stepper motor (7) is consolidated Surely screw rod (10) is connected with, threaded one end of the screw rod (10) away from stepper motor (7) output end is connected with loop bar (11), the one end of the loop bar (11) away from screw rod (10) is fixedly connected with movable plate (12), a left side for the movable plate (12) Right both sides are socketed in the outer surface of stock (8), and side of the movable plate (12) away from loop bar (11) is fixedly connected with expansion link (13), the one end of the expansion link (13) away from movable plate (12) is fixedly connected with stage body (14), institute through the first headstock (6) The front for stating stage body (14) offers multiple mounting grooves (15), and the inner surface of the mounting groove (15) is fixedly connected with synchronous motor (16), output end of the synchronous motor (16) away from mounting groove (15) inner surface side is fixedly connected with rotating shaft (17), described The one end of rotating shaft (17) away from synchronous motor (16) output end is fixedly connected with Rotational Cylindrical (18), the appearance of the Rotational Cylindrical (18) Face is fixedly connected with multiple spiral fans (19), and the inner surface of the mounting groove (15) is fixedly connected with positioned at spiral fan (19) Positive safety guard (20), the positive standing groove (21) of connection, the standing groove are offered at the top of the stage body (14) (21) symmetrical two batteries (22), two batteries (22) side close to each other are fixedly connected with the inner surface at left and right sides of Lamp joint (23) is fixedly connected with, side of the lamp joint (23) away from battery (22) is fixedly connected with fluorescent tube (24), The second headstock (25) is fixedly connected with the inner surface of standing groove (21) bottom, the second headstock (25) bottom Motor (26) is fixedly connected with inwall, is fixedly connected with the inwall of the second headstock (25) bottom positioned at driving Motor (26) both sides and symmetrical two gag lever posts (27), remote second headstock (25) bottom interior wall of the gag lever post (27) One end is fixedly connected with locating rod (28), and the output end at the top of the motor (26) is fixedly connected with threaded rod (29), institute State threaded one end of the threaded rod (29) away from motor (26) output end and be connected with mobile bar (30), the mobile bar (30) is remote One end from threaded rod (29) is fixedly connected with limiting plate (31), and gag lever post is socketed at left and right sides of the limiting plate (31) (27) on outer surface, side of the limiting plate (31) away from mobile bar (30) is fixedly connected with adjusting rod (32), the tune The one end of pole (32) away from limiting plate (31) is connected with driven turntable (33) through the second headstock (25), described driven The outer surface of rotating disk (33) is fixedly connected with driven gear (34), is fixedly connected with the top of the driven turntable (33) and holds plate (35), the front for holding plate (35) is fixedly connected with locating piece (36), consolidates on the inner surface of standing groove (21) bottom Surely it is connected with the asynchronous machine (37) positioned at the second headstock (25) back side, the output end at the top of the asynchronous machine (37) is fixed Rotating bar (38) is connected with, the one end of the rotating bar (38) away from asynchronous machine (37) output end is fixedly connected with active rotating disk (39), the outer surface of the active rotating disk (39) is fixedly connected with driving gear (40), the driving gear (40) and driven tooth Engagement connects between taking turns (34).

2. multifunctional all dais is used in a kind of teaching according to claim 1, it is characterised in that：The roller (4) A diameter of five centimetres, the thickness of the roller (4) is one centimetre, and the length of the latch (3) is six centimetres.

3. multifunctional all dais is used in a kind of teaching according to claim 1, it is characterised in that：The latch (3) Outer surface and the contact position of expansion link (13) outer surface and the first headstock (6) are provided with wear-resistant pad, and the wheel is stopped (5) Outer surface is provided with slipmat with the upper surface for holding plate (35).

4. multifunctional all dais is used in a kind of teaching according to claim 1, it is characterised in that：The safety guard (20) length is 15 centimetres, and the thickness of the safety guard (20) is one centimetre.

5. multifunctional all dais is used in a kind of teaching according to claim 1, it is characterised in that：The synchronous motor (16) quantity is six, and six synchronous motor (16) rectangular arrays, and the quantity of the fluorescent tube (24) is five, and five Fluorescent tube (24) rectangular array.

6. multifunctional all dais is used in a kind of teaching according to claim 1, it is characterised in that：The spiral fan (19) quantity is five, and five spiral fan (19) circular arrays, and the quantity of the driven gear (34) is ten, and Ten driven gear (34) circular arrays, the quantity of the driving gear (40) is eight, and eight driving gears (40) are in Annular array.

7. multifunctional all dais is used in a kind of teaching according to claim 1, it is characterised in that：It is described to hold plate (35) Upper surface be inclined-plane, the upper surface for holding plate (35) and horizontal plane are in 30-degree angle.

8. multifunctional all dais is used in a kind of teaching according to claim 1, it is characterised in that：The U-board (2) and Connected mode between first headstock (6) and base (1) is welding, and the driven turntable (33) and locating piece (36) are with holding Connected mode between plate (35) is also welding.