CN203931330U - Typical case's gear train overview display teaching aid - Google Patents
Typical case's gear train overview display teaching aid Download PDFInfo
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- CN203931330U CN203931330U CN201420266105.7U CN201420266105U CN203931330U CN 203931330 U CN203931330 U CN 203931330U CN 201420266105 U CN201420266105 U CN 201420266105U CN 203931330 U CN203931330 U CN 203931330U
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Abstract
The utility model discloses a kind of typical gear train overview display teaching aid.Mechanical principle theoretical property is strong, and a lot of forms of motion are difficult to the imagination, and the mechanical principle teaching aid model inconvenience in laboratory is carried to classroom, and expensive.The utility model comprises shows casing, crank and rocker mechanism, four-bar linkage evolution mechanism, cam mechanism, gear mechanism, gear mechanism, ratchet device and Geneva mechanism; The bottom of showing casing is provided with feet, and top is provided with handle; Crank and rocker mechanism, four-bar linkage evolution mechanism, cam mechanism, gear mechanism, gear mechanism, ratchet device and Geneva mechanism are all arranged on the side of showing casing, and by being arranged on a servomotor input power of showing in casing, each servomotor is provided with motor switch respectively.The utility model extracts the typical mechanism in mechanical principle course, makes student image, the study that completes intuitively knowledge and grasp.
Description
Technical field
The utility model belongs to instruments used for education field, is specifically related to a kind of typical gear train overview display teaching aid.
Background technology
The subject of mechanical principle Shi Yimen research institution and machine, is a special kind of skill core curriculum, for studying in depth of later mechanical subject, plays important place mat effect.Yet so important core curriculum but allows many Techniques for Machinery Students rather have a headache.After investigation, find it is mainly that mechanical principle theoretical property is too strong, for a lot of forms of motion, be difficult to the imagination, the description of textbook word seems dry as dust.So on mechanical principle classroom, the demonstration directive function of teaching aid just seems very important, it can allow classmates go more intuitively to understand and understanding mechanism, and that large-scale mechanical principle teaching aid model in laboratory, be more suitable in making a visit to, inconvenience is carried on classroom and classmates' interaction, and expensive.The teaching aid of a kind of mechanism of single demonstration, function singleness and can not quantitative test.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of typical gear train overview display teaching aid is provided, and the typical mechanism in mechanical principle course is extracted, and makes student image, the study that completes intuitively knowledge and grasp.
The utility model comprises shows casing, crank and rocker mechanism, four-bar linkage evolution mechanism, cam mechanism, gear mechanism, gear mechanism, ratchet device and Geneva mechanism.Described crank and rocker mechanism, four-bar linkage evolution mechanism, cam mechanism, gear mechanism, gear mechanism, ratchet device and Geneva mechanism are all arranged on the side of showing casing, and by being arranged on a servomotor input power of showing in casing, each servomotor is provided with motor switch respectively.
Described crank and rocker mechanism comprises the first crank, rocking bar and first connecting rod; One end of described the first crank and rocking bar is all hinged with displaying casing; The first crank is by first servomotor input power; The two ends of described first connecting rod are hinged with the other end of the first crank and rocking bar respectively.
Described four-bar linkage evolution mechanism can be a kind of in crank rocker mechanism, oscillating guidebar mechanism, not offset slider-crank mechanism or offset slider-crank mechanism; The display box body side surface at four-bar linkage evolution mechanism place offers crank the first hinge hole, crank the second hinge hole, crank the 3rd hinge hole, crank the 4th hinge hole, guide rod hinge hole and swinging block hinge hole; Described four-bar linkage evolution mechanism is by second servomotor input power.
Described cam mechanism comprises cam the first driven member, cam, guide rail and cam the second driven member; Described cam is hinged with displaying casing, and by the 3rd servomotor input power; Described guide rail is fixed with showing casing; Cam the first driven member and cam the second driven member all vertically arrange, and are provided with spacing, the hinged center-aligned setting of the axial line of cam the second driven member and cam between the axial line of described cam the first driven member and the hinged center of cam; Cam the first driven member is all connected by sliding pair with guide rail with cam the second driven member, and cam the first driven member and cam the second driven member all offer fixed orifice; Cam the first driven member is connected by cam is secondary with cam, and cam the second driven member is fixed by screw at its fixed orifice place and guide rail.
Described gear mechanism comprises the gear pair of three pairs of different modification coefficients, is respectively without X-gear pair, negative addendum modification gear pair and normal shift gear pair; The driving gear of described three pairs of gear pairs and follower gear are all hinged with displaying casing, and the driving gear of three pairs of gear pairs is respectively by the 4th servomotor, the 5th servomotor and the 6th servomotor input power.
Described gear mechanism comprises input shaft, transmission shaft, output shaft, input gear, the first input shaft gear, the second input shaft gear, the 3rd input shaft gear, the 4th input shaft gear, the 5th input shaft gear, the first shaft gear, second driving shaft gear, the 3rd shaft gear, the 4th shaft gear, the 5th shaft gear, the first output shaft gear, the second output shaft gear, the 3rd output shaft gear, the 4th output shaft gear and the 5th output shaft gear.Described input gear is fixed on input shaft, and by the 7th servomotor input power; The two ends of described input shaft, transmission shaft and output shaft are all bearing on a bearing seat, and all bearing seats are fixed with showing casing; The first described input shaft gear, the second input shaft gear, the 3rd input shaft gear, the 4th input shaft gear and the 5th input shaft gear are all connected by feather key with input shaft, the first described shaft gear, second driving shaft gear, the 3rd shaft gear, the 4th shaft gear and the 5th shaft gear are all connected by feather key with transmission shaft, and the first described output shaft gear, the second output shaft gear, the 3rd output shaft gear, the 4th output shaft gear and the 5th output shaft gear are all connected by feather key with output shaft.Described output shaft and input shaft can be realized five grades of different rotating ratios: one grade of rotating ratio is that the first input shaft gear and the engagement of the 3rd shaft gear, the first shaft gear mesh with the first output shaft gear; Second gear rotating ratio is the second input shaft gear and the engagement of the 3rd shaft gear, second driving shaft gear and the engagement of the second output shaft gear; Third gear rotating ratio is the 3rd input shaft gear and the engagement of the 3rd shaft gear, the 3rd shaft gear and the engagement of the 3rd output shaft gear; Fourth gear rotating ratio is the 4th input shaft gear and the engagement of the 4th shaft gear, the 3rd shaft gear and the engagement of the 4th output shaft gear; Five grades of rotating ratios are the 5th input shaft gear and the engagement of the 5th shaft gear, the 3rd shaft gear and the engagement of the 5th output shaft gear.
Described ratchet device comprises ratchet and pawl; Described ratchet and pawl is all hinged with displaying casing; Ratchet is by the 8th servomotor input power.
Described Geneva mechanism comprises driving disc spacing pressing and sheave; Described driving disc spacing pressing and sheave are all hinged with displaying casing; Driving disc spacing pressing is by the 9th servomotor input power.
The bottom of described displaying casing is provided with feet, and top is provided with handle.
The display box body side surface at described crank and rocker mechanism place is provided with blank sheet of paper; The hinged place at described first connecting rod two ends is all fixed with pencil, and the nib of pencil contacts with blank sheet of paper.
Described four-bar linkage evolution mechanism is not offset slider-crank mechanism, comprises the second crank, second connecting rod, slide block and guide rod; One end of the second crank is hinged at crank the first hinge hole place with displaying casing, and one end of the other end and second connecting rod is hinged; The other end and the slide block of second connecting rod are hinged; Slide block is connected by sliding pair with guide rod; Guide rod is fixed with showing casing.The second crank is by second servomotor input power.
Described four-bar linkage evolution mechanism is offset slider-crank mechanism, comprises the second crank, second connecting rod, slide block and guide rod; One end of the second crank is hinged at crank the second hinge hole place with displaying casing, and one end of the other end and second connecting rod is hinged; The other end and the slide block of second connecting rod are hinged; Slide block is connected by sliding pair with guide rod; Guide rod is fixed with showing casing.The second crank is by second servomotor input power.
Described four-bar linkage evolution mechanism is oscillating guidebar mechanism, comprises the second crank, slide block and guide rod; One end of the second crank is hinged at crank the 3rd hinge hole place with displaying casing, and the other end and slide block are hinged; Slide block is connected by sliding pair with guide rod; Guide rod is hinged at guide rod hinge hole place with displaying casing.The second crank is by second servomotor input power.
Described four-bar linkage evolution mechanism is crank rocker mechanism, comprises the second crank, guide rod and swinging block.One end of the second crank is hinged at crank the 4th hinge hole place with displaying casing, and the other end and guide rod are hinged; Swinging block is connected by sliding pair with guide rod, and hinged at swinging block hinge hole place with displaying casing.The second crank is by second servomotor input power.
The beneficial effects of the utility model are:
1, the integrated typical mechanism of the utility model, not only can be used as mechanical principle classroom teaching aid, also can be used as mechanical principle experiment porch;
2, the utility model is easy and simple to handle, makes student image, the study that completes intuitively knowledge and grasp;
3, the utility model compact conformation, small and exquisite exquisiteness, quality are light, easy to carry, and are easy to safeguard.
Accompanying drawing explanation
Fig. 1 is one-piece construction stereographic map of the present utility model;
Fig. 2 is one-piece construction vertical view of the present utility model;
Fig. 3 is the stereographic map of crank and rocker mechanism in the utility model, four-bar linkage evolution mechanism and cam mechanism;
Fig. 4 is the display box body side surface schematic diagram at the utility model midplane four-bar mechanism evolution mechanism place;
Fig. 5-1st, schematic diagram when the utility model midplane four-bar mechanism evolution mechanism is not offset slider-crank mechanism;
Fig. 5-2nd, schematic diagram when the utility model midplane four-bar mechanism evolution mechanism is offset slider-crank mechanism;
Fig. 5-3rd, schematic diagram when the utility model midplane four-bar mechanism evolution mechanism is oscillating guidebar mechanism;
Fig. 5-4th, schematic diagram when the utility model midplane four-bar mechanism evolution mechanism is crank rocker mechanism;
Fig. 6 is the stereographic map of the utility model cam mechanism, gear mechanism and gear mechanism;
Fig. 7 is the stereographic map of the utility model middle gear mechanism, gear mechanism, ratchet device and Geneva mechanism.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As shown in Fig. 1,2,3,6 and 7, typical gear train overview display teaching aid, comprises and shows casing 1, crank and rocker mechanism 2, four-bar linkage evolution mechanism 3, cam mechanism 4, gear mechanism 5, gear mechanism 6, ratchet device 7 and Geneva mechanism 8.The bottom of showing casing is provided with feet 1-2, and top is provided with handle 1-1; Crank and rocker mechanism 2, four-bar linkage evolution mechanism 3, cam mechanism 4, gear mechanism 5, gear mechanism 6, ratchet device 7 and Geneva mechanism 8 are all arranged on the side of showing casing 1, and by being arranged on a servomotor input power of showing in casing 1, each servomotor is provided with motor switch 9 respectively.
As shown in Figure 3, crank and rocker mechanism 2 comprises the first crank 2-2, rocking bar 2-3 and first connecting rod 2-1; Displaying casing 1 side at crank and rocker mechanism place is provided with blank sheet of paper; One end of the first crank 2-2 and rocking bar 2-3 is all hinged with displaying casing 1; The first crank 2-2 is by first servomotor input power; The two ends of first connecting rod 2-1 are hinged with the other end of the first crank 2-2 and rocking bar 2-3 respectively, and hinged place is all fixed with pencil, and the nib of pencil contacts with blank sheet of paper.
As shown in Fig. 3,4,5-1,5-2,5-3 and 5-4, four-bar linkage evolution mechanism 3 can be a kind of in crank rocker mechanism, oscillating guidebar mechanism, not offset slider-crank mechanism or offset slider-crank mechanism; Displaying casing 1 side opening at four-bar linkage evolution mechanism 3 places is provided with crank the first hinge hole 3-1, crank the second hinge hole 3-2, crank the 3rd hinge hole 3-3, crank the 4th hinge hole 3-4, guide rod hinge hole 3-5 and swinging block hinge hole 3-6; Four-bar linkage evolution mechanism is by second servomotor input power.
Four-bar linkage evolution mechanism as shown in Fig. 3 and 5-1 is not offset slider-crank mechanism, comprises the second crank 3-8, second connecting rod 3-9, slide block 3-10 and guide rod 3-7; One end of the second crank 3-8 is hinged at crank the first hinge hole 3-1 place with displaying casing 1, and one end of the other end and second connecting rod 3-9 is hinged; The other end of second connecting rod 3-9 and slide block 3-10 are hinged; Slide block 3-10 is connected by sliding pair with guide rod 3-7; Guide rod 3-7 fixes with showing casing 1.The second crank 3-8 is by second servomotor input power.
Four-bar linkage evolution mechanism as shown in Fig. 3 and 5-2 is offset slider-crank mechanism, comprises the second crank 3-8, second connecting rod 3-9, slide block 3-10 and guide rod 3-7; One end of the second crank 3-8 is hinged at crank the second hinge hole 3-2 place with displaying casing 1, and one end of the other end and second connecting rod 3-9 is hinged; The other end of second connecting rod 3-9 and slide block 3-10 are hinged; Slide block 3-10 is connected by sliding pair with guide rod 3-7; Guide rod 3-7 fixes with showing casing 1.The second crank 3-8 is by second servomotor input power.
Four-bar linkage evolution mechanism as shown in Fig. 3 and 5-3 is oscillating guidebar mechanism, comprises the second crank 3-8, slide block 3-10 and guide rod 3-7; One end of the second crank 3-8 is hinged at crank the 3rd hinge hole 3-3 place with displaying casing 1, and the other end and slide block 3-10 are hinged; Slide block 3-10 is connected by sliding pair with guide rod 3-7; Guide rod 3-7 is hinged at guide rod hinge hole 3-5 place with displaying casing 1.The second crank 3-8 is by second servomotor input power.
Four-bar linkage evolution mechanism as shown in Fig. 3 and 5-4 is crank rocker mechanism, comprises the second crank 3-8, guide rod 3-7 and swinging block 3-11.One end of the second crank 3-8 is hinged at crank the 4th hinge hole 3-4 place with displaying casing 1, and the other end and guide rod 3-7 are hinged; Swinging block 3-11 is connected by sliding pair with guide rod 3-7, and hinged at swinging block hinge hole 3-6 place with displaying casing 1.The second crank 3-8 is by second servomotor input power.
As shown in Fig. 3 and 6, cam mechanism 4 comprises cam the first driven member 4-1, cam 4-2, guide rail 4-3 and cam the second driven member 4-4; Cam 4-2 is hinged with displaying casing 1, and by the 3rd servomotor input power; Guide rail 4-3 fixes with showing casing 1; Cam the first driven member 4-1 and cam the second driven member 4-4 all vertically arrange, and are provided with spacing, the hinged center-aligned setting of the axial line of cam the second driven member 4-4 and cam 4-2 between the axial line of cam the first driven member 4-1 and the hinged center of cam 4-2; Cam the first driven member 4-1 is all connected by sliding pair with guide rail 4-3 with cam the second driven member 4-4, and cam the first driven member 4-1 and cam the second driven member 4-4 all offer fixed orifice; Cam the first driven member 4-1 is connected by cam is secondary with cam 4-2, and cam the second driven member 4-4 fixes by screw at its fixed orifice place and guide rail 4-3.When needs are demonstrated radial translating follower cam mechanism, can screw out the screw on cam the second driven member 4-4, now cam the second driven member 4-4 is connected by cam is secondary with cam 4-2, and can slide along guide rail 4-3.When not needing to demonstrate offset translating follower cam mechanism, cam the second driven member 4-4 can be fixed by screw at its fixed orifice place and guide rail 4-3.
Gear mechanism 5 comprises the gear pair of three pairs of different modification coefficients, is respectively without X-gear pair 5-1, negative addendum modification gear pair 5-2 and normal shift gear pair 5-3; The driving gear of three pairs of gear pairs and follower gear are all hinged with displaying casing 1, and the driving gear of three pairs of gear pairs is respectively by the 4th servomotor, the 5th servomotor and the 6th servomotor input power.
As shown in Figure 7, gear mechanism 6 comprises input shaft 6-1, transmission shaft 6-2, output shaft 6-3, input gear 6-4, the first input shaft gear 6-1-1, the second input shaft gear 6-1-2, the 3rd input shaft gear 6-1-3, the 4th input shaft gear 6-1-4, the 5th input shaft gear 6-1-5, the first shaft gear 6-2-1, second driving shaft gear 6-2-2, the 3rd shaft gear 6-2-3, the 4th shaft gear 6-2-4, the 5th shaft gear 6-2-5, the first output shaft gear 6-3-1, the second output shaft gear 6-3-2, the 3rd output shaft gear 6-3-3, the 4th output shaft gear 6-3-4 and the 5th output shaft gear 6-3-5, the number of teeth of the first shaft gear 6-2-1 and the 5th shaft gear 6-2-5 is 15, the first input shaft gear 6-1-1, the second input shaft gear 6-1-2, the 3rd input shaft gear 6-1-3, second driving shaft gear 6-2-2, the 4th shaft gear 6-2-4, the 3rd output shaft gear 6-3-3, the 4th output shaft gear 6-3-4, the number of teeth of the 5th output shaft gear 6-3-5 and input gear 6-4 is 20, the 4th input shaft gear 6-1-4, the number of teeth of the 3rd shaft gear 6-2-3 and the second output shaft gear 6-3-2 is 30, the number of teeth of the 5th input shaft gear 6-1-5 and the first output shaft gear 6-3-1 is 35.It is upper that input gear 6-4 is fixed on input shaft 6-1, and by the 7th servomotor input power, it is upper that the two ends of input shaft 6-1, transmission shaft 6-2 and output shaft 6-3 are all bearing in a bearing seat 6-5, and all bearing seat 6-5 fix with showing casing 1, the first input shaft gear 6-1-1, the second input shaft gear 6-1-2, the 3rd input shaft gear 6-1-3, the 4th input shaft gear 6-1-4 is all connected by feather key with input shaft 6-1 with the 5th input shaft gear 6-1-5, the first shaft gear 6-2-1, second driving shaft gear 6-2-2, the 3rd shaft gear 6-2-3, the 4th shaft gear 6-2-4 is all connected by feather key with transmission shaft 6-2 with the 5th shaft gear 6-2-5, the first output shaft gear 6-3-1, the second output shaft gear 6-3-2, the 3rd output shaft gear 6-3-3, the 4th output shaft gear 6-3-4 is all connected by feather key with output shaft 6-3 with the 5th output shaft gear 6-3-5.When the first input shaft gear 6-1-1 and the 3rd shaft gear 6-2-3 engagement, the first shaft gear 6-2-1 mesh with the first output shaft gear 6-3-1, one grade of rotating ratio of output shaft 6-3 and input shaft 6-1 is 2:7; When the second input shaft gear 6-1-2 and the 3rd shaft gear 6-2-3 engagement, second driving shaft gear 6-2-2 mesh with the second output shaft gear 6-3-2, the second gear rotating ratio of output shaft 6-3 and input shaft 6-1 is 4:9; When the 3rd input shaft gear 6-1-3 and the 3rd shaft gear 6-2-3 engagement, the 3rd shaft gear 6-2-3 mesh with the 3rd output shaft gear 6-3-3, the third gear rotating ratio of output shaft 6-3 and input shaft 6-1 is 1:1; When the 4th input shaft gear 6-1-4 and the 4th shaft gear 6-2-4 engagement, the 3rd shaft gear 6-2-3 mesh with the 4th output shaft gear 6-3-4, the fourth gear rotating ratio of output shaft 6-3 and input shaft 6-1 is 9:4; When the 5th input shaft gear 6-1-5 and the 5th shaft gear 6-2-5 engagement, the 3rd shaft gear 6-2-3 mesh with the 5th output shaft gear 6-3-5, five grades of rotating ratios of output shaft 6-3 and input shaft 6-1 are 7:2.
As shown in Figure 7, ratchet device 7 comprises ratchet 7-2 and ratchet 7-1; Ratchet 7-2 and ratchet 7-1 are all hinged with displaying casing 1; Ratchet 7-2 is by the 8th servomotor input power.
Geneva mechanism 8 comprises driving disc spacing pressing 8-1 and sheave 8-2; Driving disc spacing pressing 8-1 and sheave 8-2 are all hinged with displaying casing 1; Driving disc spacing pressing 8-1 is by the 9th servomotor input power.
The principle of work of this typical case's gear train overview display teaching aid:
Press corresponding motor switch 9 and drive servomotor, thereby drive crank and rocker mechanism 2, four-bar linkage evolution mechanism 3, cam mechanism 4, gear mechanism 5, gear mechanism 6, ratchet device 7 or Geneva mechanism 8 motions.The first crank 2-2 of crank and rocker mechanism 2 drives first connecting rod 2-1 and rocking bar 2-3 motion, and the pencil of hinged place, first connecting rod 2-1 two ends is depicted the movement locus of the first crank 2-2 and rocking bar 2-3 on blank sheet of paper.In four-bar linkage evolution mechanism 3, by the various combination form of the second crank 3-8, second connecting rod 3-9, slide block 3-10, guide rod 3-7 and swinging block 3-11 and at the diverse location of showing casing 1 side, the crank rocker mechanism of can arranging in pairs or groups out, oscillating guidebar mechanism, not offset slider-crank mechanism or offset slider-crank mechanism.In cam mechanism 4, by screwing out cam the second driven member 4-4, at the screw at its fixed orifice place, the motion of radial translating follower cam mechanism can be shown, by screwing out cam the first driven member 4-1, at the screw at its fixed orifice place, the motion of offset translating follower cam mechanism can be shown.Gear mechanism 5 is for show the motion without X-gear pair 5-1, negative addendum modification gear pair 5-2 and normal shift gear pair 5-3 simultaneously, may be displayed on the variation of different modification coefficient condition lower toothed, centre distance and engagement situation, and by the gear of different moduluses, the number of teeth and pressure angle is set, can show the engagement situation of different gears.Gear mechanism 6, meshes to change the rotating speed of output shaft 6-3 by the different gear of the number of teeth, can obtain altogether five kinds of rotating speeds, thereby the rotating speed that also can change the 7th servomotor changes output shaft 6-3 rotating speed.
Claims (7)
1. typical gear train overview display teaching aid, comprises and shows casing, crank and rocker mechanism, four-bar linkage evolution mechanism, cam mechanism, gear mechanism, gear mechanism, ratchet device and Geneva mechanism, it is characterized in that:
Described crank and rocker mechanism, four-bar linkage evolution mechanism, cam mechanism, gear mechanism, gear mechanism, ratchet device and Geneva mechanism are all arranged on the side of showing casing, and by being arranged on a servomotor input power of showing in casing, each servomotor is provided with motor switch respectively;
Described crank and rocker mechanism comprises the first crank, rocking bar and first connecting rod; One end of described the first crank and rocking bar is all hinged with displaying casing; The first crank is by first servomotor input power; The two ends of described first connecting rod are hinged with the other end of the first crank and rocking bar respectively;
Described four-bar linkage evolution mechanism can be a kind of in crank rocker mechanism, oscillating guidebar mechanism, not offset slider-crank mechanism or offset slider-crank mechanism; The display box body side surface at four-bar linkage evolution mechanism place offers crank the first hinge hole, crank the second hinge hole, crank the 3rd hinge hole, crank the 4th hinge hole, guide rod hinge hole and swinging block hinge hole; Described four-bar linkage evolution mechanism is by second servomotor input power;
Described cam mechanism comprises cam the first driven member, cam, guide rail and cam the second driven member; Described cam is hinged with displaying casing, and by the 3rd servomotor input power; Described guide rail is fixed with showing casing; Cam the first driven member and cam the second driven member all vertically arrange, and are provided with spacing, the hinged center-aligned setting of the axial line of cam the second driven member and cam between the axial line of described cam the first driven member and the hinged center of cam; Cam the first driven member is all connected by sliding pair with guide rail with cam the second driven member, and cam the first driven member and cam the second driven member all offer fixed orifice; Cam the first driven member is connected by cam is secondary with cam, and cam the second driven member is fixed by screw at its fixed orifice place and guide rail;
Described gear mechanism comprises the gear pair of three pairs of different modification coefficients, is respectively without X-gear pair, negative addendum modification gear pair and normal shift gear pair; The driving gear of described three pairs of gear pairs and follower gear are all hinged with displaying casing, and the driving gear of three pairs of gear pairs is respectively by the 4th servomotor, the 5th servomotor and the 6th servomotor input power;
Described gear mechanism comprises input shaft, transmission shaft, output shaft, input gear, the first input shaft gear, the second input shaft gear, the 3rd input shaft gear, the 4th input shaft gear, the 5th input shaft gear, the first shaft gear, second driving shaft gear, the 3rd shaft gear, the 4th shaft gear, the 5th shaft gear, the first output shaft gear, the second output shaft gear, the 3rd output shaft gear, the 4th output shaft gear and the 5th output shaft gear; Described input gear is fixed on input shaft, and by the 7th servomotor input power; The two ends of described input shaft, transmission shaft and output shaft are all bearing on a bearing seat, and all bearing seats are fixed with showing casing; The first described input shaft gear, the second input shaft gear, the 3rd input shaft gear, the 4th input shaft gear and the 5th input shaft gear are all connected by feather key with input shaft, the first described shaft gear, second driving shaft gear, the 3rd shaft gear, the 4th shaft gear and the 5th shaft gear are all connected by feather key with transmission shaft, and the first described output shaft gear, the second output shaft gear, the 3rd output shaft gear, the 4th output shaft gear and the 5th output shaft gear are all connected by feather key with output shaft; Described output shaft and input shaft can be realized five grades of different rotating ratios: one grade of rotating ratio is that the first input shaft gear and the engagement of the 3rd shaft gear, the first shaft gear mesh with the first output shaft gear; Second gear rotating ratio is the second input shaft gear and the engagement of the 3rd shaft gear, second driving shaft gear and the engagement of the second output shaft gear; Third gear rotating ratio is the 3rd input shaft gear and the engagement of the 3rd shaft gear, the 3rd shaft gear and the engagement of the 3rd output shaft gear; Fourth gear rotating ratio is the 4th input shaft gear and the engagement of the 4th shaft gear, the 3rd shaft gear and the engagement of the 4th output shaft gear; Five grades of rotating ratios are the 5th input shaft gear and the engagement of the 5th shaft gear, the 3rd shaft gear and the engagement of the 5th output shaft gear;
Described ratchet device comprises ratchet and pawl; Described ratchet and pawl is all hinged with displaying casing; Ratchet is by the 8th servomotor input power;
Described Geneva mechanism comprises driving disc spacing pressing and sheave; Described driving disc spacing pressing and sheave are all hinged with displaying casing; Driving disc spacing pressing is by the 9th servomotor input power.
2. typical gear train overview display teaching aid according to claim 1, is characterized in that: the bottom of described displaying casing is provided with feet, and top is provided with handle.
3. typical gear train overview display teaching aid according to claim 1, is characterized in that: the display box body side surface at described crank and rocker mechanism place is provided with blank sheet of paper; The hinged place at described first connecting rod two ends is all fixed with pencil, and the nib of pencil contacts with blank sheet of paper.
4. typical gear train overview display teaching aid according to claim 1, is characterized in that: described four-bar linkage evolution mechanism is not offset slider-crank mechanism, comprises the second crank, second connecting rod, slide block and guide rod; One end of the second crank is hinged at crank the first hinge hole place with displaying casing, and one end of the other end and second connecting rod is hinged; The other end and the slide block of second connecting rod are hinged; Slide block is connected by sliding pair with guide rod; Guide rod is fixed with showing casing; The second crank is by second servomotor input power.
5. typical gear train overview display teaching aid according to claim 1, is characterized in that: described four-bar linkage evolution mechanism is offset slider-crank mechanism, comprises the second crank, second connecting rod, slide block and guide rod; One end of the second crank is hinged at crank the second hinge hole place with displaying casing, and one end of the other end and second connecting rod is hinged; The other end and the slide block of second connecting rod are hinged; Slide block is connected by sliding pair with guide rod; Guide rod is fixed with showing casing; The second crank is by second servomotor input power.
6. typical gear train overview display teaching aid according to claim 1, is characterized in that: described four-bar linkage evolution mechanism is oscillating guidebar mechanism, comprises the second crank, slide block and guide rod; One end of the second crank is hinged at crank the 3rd hinge hole place with displaying casing, and the other end and slide block are hinged; Slide block is connected by sliding pair with guide rod; Guide rod is hinged at guide rod hinge hole place with displaying casing; The second crank is by second servomotor input power.
7. typical gear train overview display teaching aid according to claim 1, is characterized in that: described four-bar linkage evolution mechanism is crank rocker mechanism, comprises the second crank, guide rod and swinging block; One end of the second crank is hinged at crank the 4th hinge hole place with displaying casing, and the other end and guide rod are hinged; Swinging block is connected by sliding pair with guide rod, and hinged at swinging block hinge hole place with displaying casing; The second crank is by second servomotor input power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201420266105.7U CN203931330U (en) | 2014-05-22 | 2014-05-22 | Typical case's gear train overview display teaching aid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420266105.7U CN203931330U (en) | 2014-05-22 | 2014-05-22 | Typical case's gear train overview display teaching aid |
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| CN203931330U true CN203931330U (en) | 2014-11-05 |
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| CN201420266105.7U Expired - Fee Related CN203931330U (en) | 2014-05-22 | 2014-05-22 | Typical case's gear train overview display teaching aid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654833A (en) * | 2014-11-14 | 2016-06-08 | 长春工业大学 | Mechanical principle rotation teaching aid instrument |
| CN105913753A (en) * | 2016-06-02 | 2016-08-31 | 厦门理工学院 | Mechanical principle experiment teaching aid |
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2014
- 2014-05-22 CN CN201420266105.7U patent/CN203931330U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105654833A (en) * | 2014-11-14 | 2016-06-08 | 长春工业大学 | Mechanical principle rotation teaching aid instrument |
| CN105654833B (en) * | 2014-11-14 | 2020-11-20 | 长春工业大学 | Mechanical principle rotary teaching aid instrument |
| CN105913753A (en) * | 2016-06-02 | 2016-08-31 | 厦门理工学院 | Mechanical principle experiment teaching aid |
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