CN204189372U - A kind of two-sided teaching aid - Google Patents
A kind of two-sided teaching aid Download PDFInfo
- Publication number
- CN204189372U CN204189372U CN201420564938.1U CN201420564938U CN204189372U CN 204189372 U CN204189372 U CN 204189372U CN 201420564938 U CN201420564938 U CN 201420564938U CN 204189372 U CN204189372 U CN 204189372U
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- China
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- teaching aid
- gear wheel
- engine
- pad
- gauge tap
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Abstract
The utility model discloses a kind of two-sided teaching aid, it is characterized in that: comprise back up pad, motor, described back up pad is erect and is arranged, and the one side of back up pad is engine demonstration teaching aid, and another side is transverse planing machine demonstration teaching aid; Described motor drives driven pinion to rotate by initiatively gear wheel, thus drives toggle to be that piston in engine demonstration teaching aid does reciprocating linear motion in cylinder block by convert rotational motion; Motor drives driven gear wheel to rotate by driving gear, driven pinion, thus in promotion transverse planing machine demonstration teaching aid, ram does reciprocating linear motion.The utility model is the utilization of toggle at engine in the one side of back up pad, and another side is the utilization of toggle in transverse planing machine.Relate to knowledge point many, application is strong; Adopt Open architecture, structure is simple; Possess multifunctional mode, make simple, easy to maintenance, volume is little, and quality is light, easy to carry, with low cost.
Description
Technical field
The utility model relates to mechanical teaching demonstration utensil, specifically a kind of two-sided teaching aid.
Background technology
In the teaching of the course such as " Fundamentals of Machine Design ", " Fundamental Course of Mechanic Manufacturing " and " Vehicle Engine Structure and principle ", conveniently student understands, the means such as general use demonstration teaching aid or broadcasting three-dimensional simulation animation.But just investigation finds that current used teaching aid can only demonstrate the principle of work of a certain mechanism, it uses category to be subject to local restriction, and fail to have given play to the demonstration lesson effect of teaching aid, teaching aid cost is higher comprehensively.
Utility model content
The purpose of this utility model is for overcoming the deficiencies in the prior art, and two demo function, teaching efficiency are better, the two-sided teaching aid of the lower-cost toggle of teaching aid to provide one to have, this two-sided teaching aid is not only applicable to the structure & working mechanism teaching chapters and sections of the teaching chapters and sections of " planar linkage mechanism " of " Fundamentals of Machine Design " course, " transverse planing machine " of " Fundamental Course of Mechanic Manufacturing " course, but also is applicable to the chapters and sections of imparting knowledge to students such as " engine construction and the principle of work " of " Vehicle Engine Structure and principle " course.
The utility model solves the technical scheme that its technical matters adopts:
A kind of two-sided teaching aid, comprises
Back up pad, described back up pad is erect and is arranged, and the one side of back up pad is engine demonstration teaching aid, and another side is transverse planing machine demonstration teaching aid;
Motor, described motor drives driven pinion to rotate by initiatively gear wheel, thus drives toggle to be that piston in engine demonstration teaching aid does reciprocating linear motion in cylinder by convert rotational motion;
Motor drives driven gear wheel to rotate by driving gear, driven pinion, thus in promotion transverse planing machine demonstration teaching aid, ram does reciprocating linear motion.
Described engine demonstration teaching aid comprises cylinder block and the piston with cylinder block adaptation, piston is connected with rod journal, the first crankshaft crank, the second crankshaft crank by connecting rod, first crankshaft crank is connected as a single entity by the first king journal, the second crankshaft crank, the second king journal and engine body and is formed toggle, and the rear end of engine first king journal is connected with driven pinion.
Described transverse planing machine demonstration teaching aid comprises fork, ram and is arranged on the fixing dovetail of back up pad upper end, ram and fixing dovetail are equipped with, the lower end of fork by fork joint pin fixed hinge on the supporting plate, upper end is connected with ram by fork ram connecting pin, middle part to be hinged on driven gear wheel by oscillating bar crank pin and to form crank length, and driven gear wheel is connected with active gear wheel by driven pinion.
Also comprise engine operation stroke indicating device.
Described engine operation stroke indicating device is four colored lights indicating devices, comprises the LED of four kinds of different colours, each LED with there is a pair normally closed contact, the gauge tap of a pair normally opened contact is connected, normally opened contact is connected with the trigger electrode of power stroke.
Described gauge tap is distributed on the outer rim side of initiatively gear wheel, initiatively gear wheel is provided with a signal light control Impactor, when signal light control Impactor is with active bull gear drive, successively contact with each gauge tap respectively, the normally closed contact of gauge tap, normally opened contact are disconnected, closes, make the LED of different colours alternately luminous, with the stroke residing for the color of LED instruction cylinder.
When the piston is in the top dead point, signal light control Impactor contacts with one of them in four gauge tap.
Described active gear wheel and the ratio of gear of driven pinion are 1:2.
This teaching aid is the utilization of toggle at engine in the one side of back up pad, and another side is the utilization of toggle in transverse planing machine.The knowledge point related to is many, and application is strong; Adopt Open architecture, structure is simple; Possess multifunctional mode, bilateral structure, utilize different light colors to represent the different operating stroke in engine working process simultaneously, to the sense organ visual stimulus that student is different, deepened the understanding of student to knowledge.This teaching aids making is simple, and easy to maintenance, volume is little, and quality is light, easy to carry, with low cost.
The teaching chapters and sections of " planar linkage mechanism " of this teaching aid is not only applicable to " Fundamentals of Machine Design " course, the structure & working mechanism teaching chapters and sections of " transverse planing machine " of " Fundamental Course of Mechanic Manufacturing " course, but also be applicable to the chapters and sections of imparting knowledge to students such as " engine construction and the principle of work " of " Vehicle Engine Structure and principle " course.
Accompanying drawing explanation
Fig. 1 is the structural representation of an engine demonstration teaching aid of back up pad in embodiment;
Fig. 2 is the structural representation of the another side transverse planing machine demonstration teaching aid of back up pad in embodiment;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the lighting control circuit schematic diagram in four colored lights indicating devices.
In figure, 1. motor 2. engine body 3. first king journal 4. first crankshaft crank 5. rod journal 6. connecting rod 7. piston pin 8. piston 9. cylinder block 10. fork 11. fixes dovetail 12. ram 13. back up pad 14. pilot lamp compoboard 15. second king journal lining 16. second king journal 17. second bearing 18. first piston pin bush(ing) 19. second gudgeon pin bush 20. driven gear wheel 21. oscillating bar crank pin 22. initiatively gear wheel 23. gauge tap fixed head 24. first gauge tap 25. second crankshaft crank 26. first king journal lining 27. clutch shaft bearing 28. supporting pin 29. second gauge tap 30. the 3rd gauge tap 31. the 4th gauge tap 32. fork ram connecting pin 33. first flat key 34. driven pinion 35. fork joint pin 36. signal light control Impactor 37. second flat key.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further elaborated, but is not to restriction of the present utility model.
Embodiment:
With reference to Fig. 1-Fig. 4, a kind of two-sided teaching aid, comprises
Back up pad 13, described back up pad 13 is erect and is arranged, and the one side of back up pad 13 is engine demonstration teaching aid, and another side is transverse planing machine demonstration teaching aid;
Motor 1, described motor 1 drives driven pinion 34 to rotate by initiatively gear wheel 22, thus drives toggle to be that piston 8 in engine demonstration teaching aid does reciprocating linear motion in cylinder block 9 by convert rotational motion;
Motor 1 drives driven gear wheel 20 to rotate by driving gear 19, driven pinion 34, thus in promotion transverse planing machine demonstration teaching aid, ram 12 does reciprocating linear motion.
Described engine demonstration teaching aid comprises cylinder block 9 and the piston 8 with cylinder block adaptation, piston 8 is connected with rod journal 5, first crankshaft crank 4, second crankshaft crank 25 by connecting rod 6, first crankshaft crank 4 is connected as a single entity by the first king journal 3, second crankshaft crank 25, second king journal 16 with engine body 2 and forms toggle, and the rear end of engine first king journal 3 is connected with driven pinion 34.
Described transverse planing machine demonstration teaching aid comprises fork 10, ram 12 and is arranged on the fixing dovetail 11 of back up pad 13 upper end, ram 12 is equipped with fixing dovetail 11, fork joint pin 35 fixed hinge is passed through in back up pad 13 in the lower end of fork 10, upper end is connected with ram 12 by fork ram connecting pin 32, middle part to be hinged on driven gear wheel 20 by oscillating bar crank pin 21 and to form crank length, and driven gear wheel 20 is connected with active gear wheel 22 by driven pinion 34.
Also comprise engine operation stroke indicating device.
Described engine operation stroke indicating device is four colored lights indicating devices, comprises the LED of four kinds of different colours, each LED with there is a pair normally closed contact, the gauge tap of a pair normally opened contact is connected, normally opened contact is connected with the trigger electrode of power stroke.
Described gauge tap comprises the first gauge tap 24, second gauge tap 29, the 3rd gauge tap 30, the 4th gauge tap 31, each gauge tap is distributed on the outer rim side of initiatively gear wheel 22, initiatively gear wheel 22 is provided with a signal light control Impactor 36, when signal light control Impactor 36 rotates with active gear wheel 22, successively contact with each gauge tap respectively, the normally closed contact of gauge tap, normally opened contact is made to disconnect with closed, make the LED of different colours alternately luminous, with the stroke residing for the color of LED instruction cylinder.
When piston 8 is in top dead centre, signal light control Impactor 36 contacts with one of them in four gauge tap first gauge tap 24, second gauge tap 29, the 3rd gauge tap 30, the 4th gauge tap 31.
Described active gear wheel 22 is 1:2 with the ratio of gear of driven pinion 34.
Particularly, in engine demonstration teaching aid, the rear end of engine first king journal 3 connects driven pinion 34 by the first flat key 33, motor 1 drives driven pinion 34 to rotate by active gear wheel 22, thus drive toggle to be that piston 8 does reciprocating linear motion in cylinder block 9 by convert rotational motion, piston 8 is connected with connecting rod 6 by piston pin 7, and piston pin 7 is connected with connecting rod 6 by first piston pin bush(ing) 18, second gudgeon pin bush 19.First king journal 3 is connected with engine body 2 by the first king journal lining 26, clutch shaft bearing 27.Second king journal 16 is connected with engine body 2 by the second king journal lining 15, second bearing 17.Initiatively gear wheel 22 is connected with the rotating shaft of motor 1 by the second flat key 37.
In transverse planing machine demonstration teaching aid, when motor 1 works, drive driven gear wheel 20 to rotate by active gear wheel 22, driven pinion 34, thus promotion ram 12 do reciprocating linear motion.
In four colored lights indicating devices, the enforcement that engine four colored lights controls, be realized by circuit theory as shown in Figure 4, comprise controllable silicon SCR 1, SCR2, SCR3, SCR4, four colored lights LED1, LED2, LED3, LED4, resistance R1, R2, R3, R4, gauge tap K1, K2, K3, K4, battery GB.In figure, gauge tap has a pair normally closed contact, a pair normally opened contact.Normally closed contact is connected with silicon controlled anode, and normally opened contact is connected with the trigger electrode G pole of subsequent work stroke.
In Fig. 3, in the outside of active gear wheel 22, gauge tap fixed head 23 is fixed in back up pad 13 by 4 supporting pins 28.K1 in Fig. 4 is the first gauge tap 24, K4 is the second gauge tap 29, K3 is the 3rd gauge tap 30, K2 is the 4th gauge tap 31, be distributed on gauge tap fixed head 23, as shown in Figure 2, when signal light control Impactor 36 on active gear wheel 22 rotates with driving gear, successively contact with the first gauge tap 24, the 4th gauge tap 31, the 3rd gauge tap 30, second gauge tap 29 respectively, make the disconnection of the normally closed contact of gauge tap and normally opened contact, close.Because engine first king journal 3 rotates 2 weeks, piston 8 to-and-fro movement 2 times, engine completes a working cycle, four colored lights alternate conduction 1 time, and namely when driven pinion 34 rotates 2 weeks, initiatively gear wheel 22 rotates 1 week.
In Fig. 4, when piston 8 is in top dead centre, admission stroke starts, and signal light control Impactor 36 contacts with K switch 1, its normally closed contact disconnects, and normally opened contact closes, current trigger controllable silicon SCR 2 conducting, form loop, LED 2 sends blue lamp light signal, and display is in admission stroke; Along with piston 8 be displaced downwardly to lower dead center time, when signal light control Impactor 36 contacts with K switch 2, its normally closed contact disconnect, LED 2 extinguishes, and normally opened contact closes simultaneously, triggers controllable silicon SCR 3 conducting, electric current forms loop, and LED 3 sends white light signal, and instruction is in pressure stroke; Along with the propelling of pressure stroke, when piston 8 moves to top dead centre, signal light control Impactor 36 contacts with K switch 3, its normally closed contact disconnects, and LED 3 extinguishes, and normally opened contact closes, current trigger controllable silicon SCR 4 conducting, form loop, LED 4 sends green signal, and instruction is in working stroke; When piston 8 gets back to lower dead center again, signal light control Impactor 36 contacts with K switch 4, and its normally closed contact disconnects, LED 4 extinguishes, and normally opened contact closes, current trigger controllable silicon SCR 1 conducting, form loop, LED1 sends red light signal, and instruction is in instroke.The different colours of four colored lights indicating devices is designated as: admission stroke-LED2 blue indicator light is bright, and pressure stroke-LED3 white indicating light is bright, and expansion stroke-LED4 green indicating lamp is bright, and out stroke-LED1 red led is bright.Four colored lights are arranged on pilot lamp compoboard 14, and pilot lamp compoboard 14 is arranged in back up pad 13.
The utility model takes Open architecture, conveniently imparts knowledge to students, the course of work directly perceived, and the engine teaching aid structure of back up pad 13 one side takes the Open architecture of partly cut-away, and the bull-nose plane structure of back up pad 13 another side takes unenclosed construction completely;
Take bilateral structure, the two-sided teaching aid of toggle utilizes the two sides of back up pad 13 to illustrate the structure of two kinds of different machines, has both related to mechanical design course organizational knowledge, relates to again the structure & working mechanism of machine.Being the demonstration teaching aid of mechanical teaching, is again the displaying model of the teaching of automotive-type.This teaching aid good demonstration effect, applied range, can be used as teaching aid during teachers' instruction, also can as the reference model of mechanical principle or Course Exercise in Mechanical Design and student's graduation project;
Take four colored lights to represent the impulse stroke that engine is different, in order to ocular demonstration, deepen student to the understanding of engine operation stroke, when this teaching aid is shinny with the lamp of four kinds of different colours, represent the different courses of work.
Claims (8)
1. a two-sided teaching aid, is characterized in that: comprise
Back up pad, described back up pad is erect and is arranged, and the one side of back up pad is engine demonstration teaching aid, and another side is transverse planing machine demonstration teaching aid;
Motor, described motor drives driven pinion to rotate by initiatively gear wheel, thus drives toggle to be that piston in engine demonstration teaching aid does reciprocating linear motion in cylinder by convert rotational motion;
Motor drives driven gear wheel to rotate by driving gear, driven pinion, thus in promotion transverse planing machine demonstration teaching aid, ram does reciprocating linear motion.
2. two-sided teaching aid according to claim 1, it is characterized in that: described engine demonstration teaching aid comprises cylinder block and the piston with cylinder block adaptation, piston is connected with rod journal, the first crankshaft crank, the second crankshaft crank by connecting rod, first crankshaft crank is connected as a single entity by the first king journal, the second crankshaft crank, the second king journal and engine body and is formed toggle, and the rear end of engine first king journal is connected with driven pinion.
3. two-sided teaching aid according to claim 1, it is characterized in that: described transverse planing machine demonstration teaching aid comprises fork, ram and is arranged on the fixing dovetail of back up pad upper end, ram and fixing dovetail are equipped with, the lower end of fork by fork joint pin fixed hinge on the supporting plate, upper end is connected with ram by fork ram connecting pin, middle part to be hinged on driven gear wheel by oscillating bar crank pin and to form crank length, and driven gear wheel is connected with active gear wheel by driven pinion.
4. two-sided teaching aid according to claim 1, is characterized in that: also comprise engine operation stroke indicating device.
5. two-sided teaching aid according to claim 4, it is characterized in that: described engine operation stroke indicating device is four colored lights indicating devices, comprise the LED of four kinds of different colours, each LED with there is a pair normally closed contact, the gauge tap of a pair normally opened contact is connected, normally opened contact is connected with the trigger electrode of power stroke.
6. two-sided teaching aid according to claim 5, it is characterized in that: described gauge tap is distributed on the outer rim side of initiatively gear wheel, initiatively gear wheel is provided with a signal light control Impactor, when signal light control Impactor is with active bull gear drive, successively contact with each gauge tap respectively, the normally closed contact of gauge tap, normally opened contact are disconnected, closes, make the LED of different colours alternately luminous, with the stroke residing for the color of LED instruction cylinder.
7. two-sided teaching aid according to claim 6, is characterized in that: when the piston is in the top dead point, and signal light control Impactor contacts with one of them in four gauge tap.
8. two-sided teaching aid according to claim 1, is characterized in that: described active gear wheel and the ratio of gear of driven pinion are 1:2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564938.1U CN204189372U (en) | 2014-09-29 | 2014-09-29 | A kind of two-sided teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420564938.1U CN204189372U (en) | 2014-09-29 | 2014-09-29 | A kind of two-sided teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204189372U true CN204189372U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420564938.1U Expired - Fee Related CN204189372U (en) | 2014-09-29 | 2014-09-29 | A kind of two-sided teaching aid |
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| Country | Link |
|---|---|
| CN (1) | CN204189372U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332097A (en) * | 2014-09-29 | 2015-02-04 | 桂林航天工业学院 | Two-sided teaching appliance |
| CN106991899A (en) * | 2017-03-29 | 2017-07-28 | 武汉软件工程职业学院 | A kind of pneumohydraulic pressure-cylinder teaching aid of Multifunctional demonstration |
| CN112719051A (en) * | 2020-12-12 | 2021-04-30 | 安徽博斯特科技有限公司 | Large-size forging piece punching device |
-
2014
- 2014-09-29 CN CN201420564938.1U patent/CN204189372U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332097A (en) * | 2014-09-29 | 2015-02-04 | 桂林航天工业学院 | Two-sided teaching appliance |
| CN104332097B (en) * | 2014-09-29 | 2017-03-15 | 桂林航天工业学院 | A kind of two-sided teaching aid |
| CN106991899A (en) * | 2017-03-29 | 2017-07-28 | 武汉软件工程职业学院 | A kind of pneumohydraulic pressure-cylinder teaching aid of Multifunctional demonstration |
| CN112719051A (en) * | 2020-12-12 | 2021-04-30 | 安徽博斯特科技有限公司 | Large-size forging piece punching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 Termination date: 20160929 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |