CN205264182U - Portable assembled theoretical mechanics teaching aid - Google Patents

Portable assembled theoretical mechanics teaching aid Download PDF

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Publication number
CN205264182U
CN205264182U CN201520911851.1U CN201520911851U CN205264182U CN 205264182 U CN205264182 U CN 205264182U CN 201520911851 U CN201520911851 U CN 201520911851U CN 205264182 U CN205264182 U CN 205264182U
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CN
China
Prior art keywords
teaching aid
rod
general
mainboard
stepper motor
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Expired - Fee Related
Application number
CN201520911851.1U
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Chinese (zh)
Inventor
徐庆乡
林勇
王绪磊
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Zhijiang College of ZJUT
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Zhijiang College of ZJUT
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Priority to CN201520911851.1U priority Critical patent/CN205264182U/en
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Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a portable assembled theoretical mechanics teaching aid, including the hexahedron portable box in the light flip right angle of matter, install the background mainboard in the case lid of box, the bottom of box is filled with the PPT plastics and is cut apart into the control cabinet, automatic drive arrangement, four parts of general collection room on the teaching aid and picture arragement brief introduction piece placing chamber, background mainboard upper portion equipartition offer can the bolt the little round hole of nail, background mainboard lower part seted up horizontal sliding path, horizontal sliding path on install the drive arrangement that marchs, march drive arrangement and transmission link to each other, the drive arrangement that marchs pass through circuit and control cabinet and link to each other. The utility model has the advantages of simple structure the novelty, the function collection is complete, and the material is good, light in weight, whole device is installed in the suitcase, and the teacher can conveniently carry in the classroom, can touch it by oneself to carry on assembling of mechanism, the control mechanism motion to arouse the student shen ru to think, further comprehension scientific principle opinion.

Description

Portable assembly rational mechanics teaching aid
Technical field
The utility model relates to teaching demonstration field, particularly, is a kind of portable assembly rational mechanics teaching aid.
Background technology
In Theoretical Mechanics Teaching process, to use the especially mechanism in machinery of various engineering structures, must understand machineCorrelation between the forms of motion of each rigid body and motion in structure, just can carry out the synthetic decomposition of analysis, speed of restraining force, accelerationSynthetic decomposition, and dynamics calculation, but the object that mechanism is classmates to be run into first, in mechanism the forms of motion of each rigid body andThe relation of relative motion is difficult to the imagination, and extensive use multimedia animation is shown the motion of various mechanisms at present, but a width width is flatFace animation does not have practical set-up contract drawing model true to nature directly perceived, can touch and operate, the knot of classmates to mechanism arbitrarily to classmatesUsually sensation fascination of structure and motion. The object visual of early application, is clean steel iron formula mechanical teaching aid, and volume is large, quality weight, structureFixed single, or wooden teaching aid volume is large, and the life-span is short, and expense is high, function singleness, and all can not be connected with multimedia systemEtc. shortcoming. Can not answer in fact the demand of modernizing teaching.
Utility model content
The utility model has overcome above-mentioned defect in prior art, has proposed a kind of portable assembly rational mechanics teaching aid,The utlity model has novelty simple in structure, function collection is complete, and general part assembly type mechanical teaching aid material is good, lightweight, whole dressPut and be arranged in suitcase, teacher can be convenient for carrying in classroom; After class, student can do it yourself to carry out the assembled of mechanism,Controlling organization motion, to excite student deeply to think deeply, further comprehension theory.
In order to achieve the above object, the technical solution of the utility model is:
A kind of portable assembly rational mechanics teaching aid, comprises that light weight renovates the portable casing of right angle hexahedron, described caseBackground mainboard is installed in the case lid of body, and the bottom of described casing is divided into console with the filling of PPT plastics, automatically drives dressPut teaching aid general part boxroom and four parts of picture mosaic brief introduction piece holding chamber; In described teaching aid general part boxroom, be placed withTeaching aid general part; In described picture mosaic brief introduction piece holding chamber, be placed with teaching aid spliced map, can see the layout of each teaching aid mechanismAnd assemble method; The uniform small sircle hole that offers energy latch nail in described background mainboard top; Open described background mainboard bottomBe provided with horizontal slide, on described horizontal slide, traveling drive be installed, described traveling drive and transmission deviceBe connected; Described traveling drive is connected with console by circuit; Camera is also installed in described casing; DescribedCamera is connected with dais computer by USB interface, and the motion process of teaching aid general part is play in the giant-screen in classroom.
Described background mainboard is white PE background mainboard, and described uniform the offering in white PE background mainboard top can be insertedThe dot matrix small sircle hole of pin; Small sircle hole inserts connection in the above for transmission device and teaching aid general part; The described white PE back of the bodyScape mainboard bottom offers 3 road horizontal slides.
Described traveling drive is by turbine and worm reducing motor, shaft coupling, screw mandrel, shift fork, flange nut, stepping electricityMachine composition; Described reducing motor is connected with screw mandrel by shaft coupling, is set with 2 shift forks on described screw mandrel, described 2Between shift fork, be installed with stepper motor, and 2 described shift forks are fixed on screw mandrel by 1 flange nut respectively; Institute2 shift forks stating are placed on horizontal slide, can make to be arranged on stepper motor above it and be fixed on any position of horizontal slidePut; Described stepper motor is connected with console by circuit. Utilize turbine and worm reducing motor, height is turned round to speed and decelerate to instituteThe low revolution speed of wanting, can obtain larger moment of torsion simultaneously, and shaft coupling is connected screw mandrel with turbine and worm reducing motor, by turbine snailRotating speed and the moment of torsion of bar reducing motor pass to screw mandrel; Two shift forks are enclosed within on screw mandrel, and with its fixing stepper motor; Screw mandrel turnsMoving drive the motion of advancing of the left and right of shift fork in horizontal slide direction, thereby stepper motor advanced along about horizontal slide,Rotatablely moving of turbine and worm reducing motor is converted to the rectilinear motion of stepper motor on background mainboard lower horizontal slideway,Realize stepper motor has been placed in to any seat of background mainboard lower horizontal slideway, to adapt to different mechanical teaching aid mechanisms installation positionThe needs of putting.
Described transmission device is by driving wheel, and driven pulley and Timing Belt form; Between described driving wheel and driven pulley, pacifyTiming Belt is housed, by Timing Belt, motion is passed to driven pulley 3; And described Timing Belt respectively with driving wheel, driven pulley onTooth engagement be connected; The motor shaft of the stepper motor on described driving wheel and traveling drive is connected; Described driven pulleyBe connected with teaching aid general part. Teaching aid general part is fixed on driven pulley, and the rotation of stepper motor is converted to teaching aid general partRevolve motion, realize power transmission.
Described automatic drive is by transformer, potentiometer, and potential pulse delivery device, drives chip, hand pulser,Gauge tap composition; Described gauge tap is connected with transformer, and described transformer is connected with potentiometer, described potentiometerBe connected with potential pulse delivery device; Described potential pulse delivery device is connected with driving chip; Described driving chip with advanceStepper motor on drive unit is connected; Described driving chip is also connected with hand pulser. Wherein said transformer will220V alternating voltage is converted to after DC low-voltage, and the movement by movable contact in potentiometer on resistive element obtains electricityPressure amplitude value is controlled at voltage segment output between 0 ~ 5V, then by voltage impulse generator, the DC voltage of 0 ~ 5V is converted to wideThe rectangular pulse that degree, amplitude and repetition rate are adjustable, by driving chip to accept pulse, Driving Stepping Motor rotates.
Manual control handle (genial the rotating counterclockwise of energy) is installed on described bottom console, and auto-manual conversion is revolvedButton, steering knob automatically time, rotating speed height control handle automatically time; Described manual control handle, auto-manual conversion knob,Automatically steering knob time, automatically time, rotating speed height control handle is respectively by the stepper motor phase on circuit and traveling driveConnect; Realizing various teaching aid mechanism requires into regular motion according to teaching.
In described teaching aid general part boxroom, be placed with and scribble versicolor general teaching aid general part; Described teaching aidGeneral part comprises connecting rod, gear, cam, slide block, spring, T-shaped push rod, plastic spacer, base plate magnet, the band little bar of cap and ironyLittle bar; In teaching aid general part boxroom, be placed with unitized teaching aid general part, teacher can be easily according to assembling method schematic diagramAssembled various teaching aid general parts on background mainboard.
Wherein said connecting rod is wide 2mm, and length is respectively 60mm, 80mm, and 100mm, 120mm, 140mm, 180mm,200mm, the connecting rod of 300mm;
Described gear is modulus 2,20 ° of pressure angles, tip diameter 35mm, the gear of the number of teeth 22;
Described cam is base circle diameter (BCD) 40 ㎜, the cam of rise 10 ㎜ of T-shaped push rod; The higher pair of cam and T-shaped push rodFormation is rely on spring force sealed;
Described slide block is that length and width are the slide block of 30*40 ㎜; Slide block and connecting rod are connected to form moving sets;
Described spring, spring is transported the locking between T-shaped push rod and connecting rod;
Described T-shaped push rod and cam form higher pair;
Described plastic spacer is outside diameter 12mm, and the plastic spacer of thick 2mm, between two teaching aid general partsMechanical seal;
Described base plate magnet is diameter 10mm, the cylindrical base plate magnet of high 2mm;
The described little bar of band cap is diameter 2mm, the little bar of band cap of high 3mm.
The beneficial effects of the utility model are: can overcome existing teaching aid volume large, and Heavy Weight, structure is fixed, function singleness,Be not easy to dismounting, can not incorporate the problems such as multimedia teaching, the utility model, on material, is selected the PE plate of the clean safety of materialFor blank, make various teaching aid general parts and the background mainboard that has dot matrix circular hole, teaching aid general part and mainboard by carving machine carvingSmooth surface, lightweight, quality is good; In function, the teaching aid general part of this teaching aid adopts generalization, on mainboard, is evenly distributedSmall sircle hole, can need the good own needed mechanical teaching aid of quick-assembling according to teachers' instruction, as the transmission of train, planetGear mechanism, four-bar mechanism, slider-crank mechanism, cam guide-bar mechanism, crank and rocker mechanism, ore breaker structure, and eachPlant complicated plane mechanism. Each mechanism relating in Theoretical Mechanics Teaching substantially can be out assembled; On controlling, toolHave manual and automatic two kinds of selections, if select automatically, after switch opens, electric current is by transformer, and potentiometer and potential pulse are putPine device is converted to pulse, by driving chip to accept, and Driving Stepping Motor rotation, then be converted to power by synchronous belt transmission deviceThe driving force of learning driving link in teaching aid general part, makes teaching aid mechanism kinematic. If select manually, rotation manual is shaken wheel pulser,Can produce pulse, by driving chip to receive this pulse. Just can directly rotate and make mechanism kinematic with hand. If rotation direction switch, canTurning to of mapping device driving link. If select automatically, then the adjusting of selection speed and forward-reverse switch, in adjustable teaching aid general partThe size and Orientation of the movement velocity of driving link. Stepper motor is arranged on mainboard bottom, due to be equipped with screw mandrel and on plectrumRotatablely moving of turbine and worm motor is converted to the rectilinear motion of stepper motor on guide rail, so motor can be placed in to backgroundSeat arbitrarily, mainboard bottom, to adapt to the needs of different mechanical teaching aid mechanisms installation site. In form, all teaching aid general partsAll install or be placed in the casing of a light portable with backboard, as long as open casing, switch on power, assembled good mechanism used,Can on Box Cover background mainboard, demonstrate the motion of mechanism. Video camera is also installed, by USB interface and dais in teaching aid boxComputer connects, and mechanism kinematic process and multimedia teaching are combined together.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is traveling drive schematic diagram of the present utility model;
Fig. 3 is transmission device schematic diagram of the present utility model;
Fig. 4 is the splicing schematic diagram of revolute pair of the present utility model;
Fig. 5 is the splicing schematic diagram of cam higher pair of the present utility model;
Fig. 6 is automatic feed mechanism schematic diagram of the present utility model;
Fig. 7 is shaping machine structural scheme of mechanism of the present utility model;
Fig. 8 is cam follower structural scheme of mechanism of the present utility model;
Fig. 9 is planetary gears schematic diagram of the present utility model;
Figure 10 is crank and rocker mechanism schematic diagram of the present utility model.
Detailed description of the invention
Embodiment 1
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail. As Figure 1-3, this realityExecute routine a kind of portable assembly rational mechanics teaching aid, comprise that light weight renovates the portable casing 1 of right angle hexahedron, described casingBackground mainboard 2 is installed in 1 case lid, and the bottom of described casing 1 is divided into console 3 with the filling of PPT plastics, automatically drives dressPut 4, teaching aid general part boxroom 7 and 8 four parts of picture mosaic brief introduction piece holding chamber; In described teaching aid general part boxroom 7, putBe equipped with teaching aid general part 10; In described picture mosaic brief introduction piece holding chamber 8, be placed with teaching aid spliced map, can see each teaching aid mechanismLayout and assemble method; The uniform small sircle hole 11 that offers energy latch nail in described background mainboard 2 tops; Described background masterPlate 2 bottoms offer horizontal slide 12, on described horizontal slide 12, traveling drive 5 are installed, the described driving of advancingDevice 5 is connected with transmission device 6; Described traveling drive 5 is connected with console 3 by circuit; In described casing 1, go backCamera 9 is installed; Described camera 9 is connected with dais computer by USB interface, and the motion process of teaching aid general part is existedIn the giant-screen in classroom, play.
Described background mainboard 2 is white PE background mainboard, the described uniform energy that offers in white PE background mainboard topThe dot matrix small sircle hole 11 of latch nail; Small sircle hole inserts and is connected in the above with teaching aid general part 10 for transmission device 6; Described is whiteLook PE background mainboard 2 bottoms offer 3 road horizontal slides 12.
Described traveling drive 5 is by turbine and worm reducing motor 13, shaft coupling 14, screw mandrel 15, shift fork 16, flange spiral shellMother 17, stepper motor 18 forms; Described reducing motor 13 is connected with screw mandrel 15 by shaft coupling 14, cover on described screw mandrel 152 shift forks 16 are housed, between 2 described shift forks 16, are installed with stepper motor 18, and 2 described shift forks 16 are logical respectivelyCrossing 1 flange nut 17 is fixed on screw mandrel 15; 2 described shift forks 16 are placed on horizontal slide 12, can make to be arranged on itStepper motor 18 is above fixed on the optional position of horizontal slide 12; Described stepper motor 18 is by circuit and console 3Be connected. Utilize turbine and worm reducing motor 13, height is turned round to speed and decelerate to desired low revolution speed, can obtain larger turning round simultaneouslySquare, shaft coupling 14 is connected screw mandrel 15 with turbine and worm reducing motor 13, by the rotating speed of turbine and worm reducing motor 13 and moment of torsionPass to 15, two shift forks 16 of screw mandrel and be enclosed within on screw mandrel 15, and with its fixing stepper motor 18; Screw mandrel 15 rotates and drives shift fork 16The motion of advancing of left and right in horizontal slide 12 directions, thus stepper motor 18 is advanced along horizontal slide 12 left and right, by whirlpoolRotatablely moving of worm and gear reducing motor 13 is converted to the straight line fortune of stepper motor 18 on background mainboard 2 lower horizontal slideways 12Moving, realize stepper motor 18 has been placed in to background mainboard 2 any seats of lower horizontal slideway 12, to adapt to different mechanical teaching aid machinesThe needs of structure installation site.
Described transmission device 6 is by driving wheel 19, and driven pulley 20 and Timing Belt 21 form; Described driving wheel 19 is with drivenBetween wheel 20, Timing Belt 21 is installed, and described Timing Belt 21 engages with the tooth on driving wheel 19, driven pulley 20 respectively connected;The motor shaft of the stepper motor 18 on described driving wheel 19 and traveling drive 5 is connected; Described driven pulley 20 and teaching aidGeneral part 10 is connected; By Timing Belt, motion is passed to driven pulley 20. Teaching aid general part 10 is fixed on driven pulley 3, will walkThe rotation of entering motor 18 is converted to the motion of revolving of teaching aid general part 10, realizes power transmission.
Described automatic drive 4 is by transformer, potentiometer, and potential pulse delivery device, drives chip, hand pulseDevice, gauge tap composition (not shown); Described gauge tap is connected with transformer, described transformer and potentiometer phaseConnect, described potentiometer is connected with potential pulse delivery device; Described potentiometer and potential pulse delivery device and driving chip phaseConnect, described driving chip is connected with the stepper motor 18 on traveling drive 5; Described driving chip also with hand pulseDevice is connected. Transformer is converted to 220V alternating voltage after DC low-voltage, by a movable contact in potentiometer at resistive elementOn movement, obtain voltage magnitude and be controlled between 0 ~ 5V voltage segment output, then by voltage impulse generator straight by 0 ~ 5VStream voltage transitions is the adjustable rectangular pulse of width, amplitude and repetition rate, by driving chip to accept pulse, Driving Stepping Motor18 rotate.
Genial the rotating counterclockwise of manual control handle 22(energy is installed on described bottom console 3), auto-manual turnsChange knob 23, steering knob 24 automatically time, rotating speed height control handle 25 automatically time; Described manual control handle 22, automaticallyManual switch knob 23, steering knob 24 automatically time, automatically time, rotating speed height control handle 25 is respectively by circuit and stepping electricityControl chip, the turbine and worm reducing motor 13 of machine 18 are connected; Can independently select automatic or manual turn-knob, control step motor revolvesRotary speed and direction, thereby the motion of drive and control teaching aid general part 10. Realizing various teaching aid general parts 10 wants according to teachingAsk into regular motion.
In described teaching aid general part boxroom 7, be placed with and scribble versicolor teaching aid general part 10; Described teaching aidGeneral part 10 comprises connecting rod 26, gear 27, cam 28, slide block 29, spring 30, T-shaped push rod 31, plastic spacer 32, base plate suction ironStone 33, the band little bar 34 of cap and the little bar 35 of irony; In teaching aid general part boxroom 7, be placed with unitized teaching aid general part 10, teacherCan be easily according to assembling method schematic diagram assembled various teaching aid general parts 10 on background mainboard 2.
Wherein said connecting rod 26 is wide 2mm, and length is respectively 60mm, 80mm, and 100mm, 120mm, 140mm, 180mm,200mm, the connecting rod of 300mm;
Described gear 27 is modulus 2,20 ° of pressure angles, tip diameter 35mm, the gear of the number of teeth 22;
Described cam 28 is base circle diameter (BCD) 40 ㎜, the cam of rise 10 ㎜ of T-shaped push rod 31; Cam 28 and T-shaped push rodIt is rely on spring force sealed that 31 higher pair forms;
The slide block that described slide block 29 is 30*40mm for length and width; Slide block 29 is connected to form moving sets with connecting rod 26;
Described spring 30, spring 30 is transported the locking between T-shaped push rod 31 and connecting rod 26;
Described T-shaped push rod 31 forms higher pair with cam 28;
Described plastic spacer 32 is outside diameter 12mm, the plastic spacer of thick 2mm; For between two teaching aid general partsMechanical seal;
Described base plate magnet 33 is diameter 10mm, the cylindrical base plate magnet of high 2mm;
The little bar 34 of described band cap is diameter 2mm, the little bar of band cap of high 3mm.
The joining method of teaching aid general part 10 has:
The splicing of revolute pair
In the time that 26, two connecting rods form revolute pair, mode is spliced as shown in Figure 4. Wherein with the little bar in the little bar 34 of capCan insert in the circular hole of two connecting rods 26, and be placed with perforated plastic pad 32 between circular hole between two connecting rods 26, then makeInhale mutually with the little bar in the little bar 34 of cap and base plate magnet 33, thereby two connecting rods 26 and plastic spacer 32 are compressed mutually. MakeWherein a connecting rod 26 rotates with respect to another root connecting rod 26.
The splicing of moving sets
If when connecting rod 26 forms moving sets with slide block 29, connecting rod 26 can be inserted into the aperture in slide block 29, just can make slidingPiece 29 relatively moves on connecting rod 26.
The splicing of slide block and connecting rod composition revolute pair and moving sets
When connecting rod 26 forms revolute pair and moving sets with slide block 29, first connecting rod 26, through the aperture in slide block 29, makes slidingPiece 29 can move freely on connecting rod 26. The little bar 36 of irony on slide block 29 inserts in the circular hole of another connecting rods 26, and with the endPlate magnet 33 is inhaled mutually; Slide block 29 forms revolute pair and moving sets with connecting rod 26.
The splicing of cam higher pair
If while forming higher pair between cam 28 and T-shaped push rod 31, can be by splicing as shown in Figure 5; Cam 28 is inhaled iron by base plateStone 2 is fixed on background mainboard 2 and does fixed-axis rotation, and cam 28 contacts with T-shaped push rod 31; 2 through holes on T-shaped push rod 31 with2 through holes alignment on connecting rod 26, by 2 little bars 35 of irony, by T-shaped push rod 31 and connecting rod 26, both are connected, and utilize 2After base plate magnet 2 is fixing, lock by spring 30, make T-shaped push rod 31 and and cam 28 between remain contact. T-shaped barAnd between cam, form higher pair.
Illustrate the movement technique of concrete splicing construction:
1, automatic feed mechanism, as shown in Figure 6,
Cam 28 is installed on driven pulley 20, cam 28 and connection rod set (comprise first connecting rod 26-1, second connecting rod 26-2,Third connecting rod 26-3 and the 4th connecting rod 26-4) be combined into assembling mechanism, in the time that cam 28 rotates, promote to contact with cam 28T-shaped push rod 31 move back and forth, 2 through holes on T-shaped push rod 31 align with 2 through holes on first connecting rod 26-1; By 2The little bar 35 of irony is connected T-shaped push rod 31 with first connecting rod 26-1, wherein first connecting rod 26-1 is placed on arch hole and fixesSide-to-side movement in part 37, arch hole fixture 37 is arranged on background mainboard 2; T-shaped push rod 31 utilizes 2 base plate magnets 2 solidAfter fixed, lock by spring 30, the second connecting rod 26-2 being connected by first connecting rod 26-1, with first connecting rod 26-1 and first is slidedThird connecting rod 26-3 in aperture in piece 29-1 is connected, and (wherein third connecting rod 26-3 uses as fork, third connecting rod 26-3One end away from the first slide block 29-1 is fixed on background mainboard 2 by base plate magnet 33), by the first slide block 29-1The little bar 36 of irony inserts the 4th connecting rod 26-4(as driven member), wherein the 4th connecting rod 26-4 is placed in arch hole fixture 37Can side-to-side movement, arch hole fixture 37 is arranged on background mainboard 2; Thereby drive the 4th connecting rod 26-4(driven member) do the cycleProperty linear reciprocating motion.
2, shaping machine mechanism, as shown in Figure 7,
Driven pulley 20 and the 5th connecting rod 26-5(as crank with) be connected, drive the 5th connecting rod 26-5 rotation, the 5th connecting rod26-5 is inserted on the little bar 36 of irony on the second slide block 29-2, and the 6th connecting rod is installed in the aperture in the second slide block 29-226-6(the 6th connecting rod 26-6 is fixed on background mainboard 2 by base plate magnet 33 away from one end of the second slide block 29-2, and the 6thConnecting rod 26-6 uses as fork), the other end of the 6th connecting rod 26-6 is inserted on the little bar 36 of irony on the 3rd slide block 29-3, theSeven-link assembly 26-7(seven-link assembly 26-7 is installed in the aperture in three slide block 29-3 also to be used as fork), seven-link assembly 26-7Insert the 8th connecting rod 26-8(as driven member) circular hole in, be wherein placed on can in arch hole fixture 37 for the 8th connecting rod 26-8Side-to-side movement, arch hole fixture 37 is fixedly mounted on background mainboard 2; Drive the 8th connecting rod 26-8(driven member) do periodicallyLinear reciprocating motion.
3, the T-shaped transfer bar mechanism of cam, as shown in Figure 8,
The combined mechanism being combined by cam 28 and T-shaped push rod 31. First cam 28 is installed on driven pulley 20, when protrudingWhen wheel 28 rotates, the T-shaped push rod 31 that promotes to contact with cam 28 is placed in vertical guide hole fixture 38 and pumps,Wherein vertical guide hole fixture 38 is arranged on background mainboard 2.
4, planetary gears, as shown in Figure 9,
The combined mechanism being combined by gear and tie-rod. Driven pulley 20 and the first gear 27-1 fix, the first gear 27-1 engages with the second gear 27-2 and is connected, and the second gear 27-2 is connected with the 9th connecting rod 26-9, thereby by the 9th connecting rod 26-9'sRotate and drive the second gear 27-2 to roll on the first gear 27-1.
5, four-bar mechanism, as shown in figure 10,
The combined mechanism that multiple connection rod set is synthetic. Driven pulley 20 and the tenth connecting rod 26-10(as crank with) be connected, the tenthConnecting rod 26-10 is connected with the 11 connecting rod 26-11, the 11 connecting rod 26-11 with the 12 connecting rod 26-12(as follower lever) phaseConnect, the 12 connecting rod 26-12 is fixed on background mainboard 2 by base plate magnet 33; When motion by the tenth connecting rod 26-10,The 11 connecting rod 26-11, thereby drive the 12 connecting rod 26-12(follower lever) do periodically and move back and forth.
Below schematically the utility model and embodiment thereof are described, this description does not have restricted, accompanying drawingShown in be also enforcement example of the present utility model, actual mechanism is not limited to this. So, if this area is generalLogical technical staff is enlightened by it, in the situation that not departing from the utility model creation aim, designs and this without creationaryThe frame mode that technical scheme is similar and embodiment, all should belong to protection domain of the present utility model.

Claims (7)

1. a portable assembly rational mechanics teaching aid, is characterized in that, comprises that light weight renovates the portable case of right angle hexahedronBody (1), is provided with background mainboard (2) in the case lid of described casing (1), the bottom of described casing (1) is cut apart with the filling of PPT plasticsBecome console (3), automatic drive (4), teaching aid general part boxroom (7) and (8) four parts of picture mosaic brief introduction piece holding chamber;In described teaching aid general part boxroom (7), be placed with teaching aid general part (10); In described picture mosaic brief introduction piece holding chamber (8), putBe equipped with teaching aid spliced map; The uniform small sircle hole (11) that offers energy latch nail in described background mainboard (2) top; Described backgroundMainboard (2) bottom offers horizontal slide (12), on described horizontal slide (12), traveling drive (5) is installed, described inTraveling drive (5) be connected with transmission device (6); Described traveling drive (5) is by circuit and console (3) phaseConnect; In described casing (1), camera (9) is also installed; Described camera (9) is connected with dais computer by USB interface.
2. portable assembly rational mechanics teaching aid according to claim 1, is characterized in that: described background mainboard (2)For white PE background mainboard, the uniform dot matrix small sircle hole that offers energy latch nail in described white PE background mainboard (2) top(11); Described white PE background mainboard (2) bottom offers 3 road horizontal slides (12).
3. portable assembly rational mechanics teaching aid according to claim 1, is characterized in that: described traveling drive(5) by turbine and worm reducing motor (13), shaft coupling (14), screw mandrel (15), shift fork (16), flange nut (17), stepper motor(18) composition; Described reducing motor (13) is connected with screw mandrel (15) by shaft coupling (14), the upper suit of described screw mandrel (15)There are 2 shift forks (16), between described 2 shift forks (16), are installed with stepper motor (18), and described 2 shift forks (16)Be fixed on screw mandrel (15) by 1 flange nut (17) respectively; Described 2 shift forks (16) are placed on horizontal slide (12)On; Described stepper motor (18) is connected with console (3) by circuit.
4. portable assembly rational mechanics teaching aid according to claim 1, is characterized in that: described transmission device (6)By driving wheel (19), driven pulley (20) and Timing Belt (21) composition; Between described driving wheel (19) and driven pulley (20), installHave Timing Belt (21), and described Timing Belt (21) engages with the tooth on driving wheel (19), driven pulley (20) respectively connected; DescribedDriving wheel (19) and traveling drive (5) on the motor shaft of stepper motor (18) be connected; Described driven pulley (20) withTeaching aid general part (10) is connected.
5. portable assembly rational mechanics teaching aid according to claim 1, is characterized in that: described automatic drive(4) by transformer, potentiometer, potential pulse delivery device, drives chip, hand pulser, gauge tap composition; Described controlSwitch is connected with transformer, and described transformer is connected with potentiometer, and described potentiometer is connected with potential pulse delivery device; InstituteThe potential pulse delivery device of stating with drive chip be connected, described driving chip respectively with traveling drive (5) on steppingMotor (18), reducing motor (13) are connected; Described driving chip is also connected with hand pulser.
6. portable assembly rational mechanics teaching aid according to claim 1, is characterized in that: described bottom console(3) manual control handle (22) is installed on, auto-manual conversion knob (23), steering knob (24) automatically time, turns automatically timeSpeed height control handle (25); Described manual control handle (22), auto-manual conversion knob (23), steering knob automatically time(24), automatically time rotating speed height control handle (25) respectively by the stepper motor (18) on circuit and traveling drive (5),Reducing motor (13) is connected; Realizing various teaching aid mechanism requires into regular motion according to teaching.
7. portable assembly rational mechanics teaching aid according to claim 1, is characterized in that: described teaching aid general part is receivedHide in chamber (7) and be placed with and scribble versicolor general teaching aid general part (10); Described teaching aid general part (10) comprises connecting rod(26), gear (27), cam (28), slide block (29), spring (30), T-shaped push rod (31), plastic spacer (32), base plate magnet(33), the band little bar of cap (34) and the little bar of irony (35);
Wherein said connecting rod (26) is wide 2mm, and length is respectively 60mm, 80mm, and 100mm, 120mm, 140mm, 180mm,200mm, the connecting rod of 300mm;
Described gear (27) is modulus 2,20 ° of pressure angles, tip diameter 35mm, the gear of the number of teeth 22;
Described cam (28) is base circle diameter (BCD) 40mm, the cam of the rise 10mm of T-shaped push rod (31);
The slide block that described slide block (29) is 30*40mm for length and width;
Described plastic spacer (32) is outside diameter 12mm, the plastic spacer of thick 2mm;
Described base plate magnet (33) is diameter 10mm, the cylindrical base plate magnet of high 2mm;
The described little bar of band cap (34) is diameter 2mm, the little bar of band cap of high 3mm.
CN201520911851.1U 2015-11-16 2015-11-16 Portable assembled theoretical mechanics teaching aid Expired - Fee Related CN205264182U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105390051A (en) * 2015-11-16 2016-03-09 浙江工业大学之江学院 Portable assembled theoretical mechanics teaching aid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105390051A (en) * 2015-11-16 2016-03-09 浙江工业大学之江学院 Portable assembled theoretical mechanics teaching aid
CN105390051B (en) * 2015-11-16 2017-10-03 浙江工业大学之江学院 Portable assembly rational mechanics teaching aid

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