CN105261288A - A transmission four-bar mechanism teaching aid - Google Patents
A transmission four-bar mechanism teaching aid Download PDFInfo
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- CN105261288A CN105261288A CN201510759153.9A CN201510759153A CN105261288A CN 105261288 A CN105261288 A CN 105261288A CN 201510759153 A CN201510759153 A CN 201510759153A CN 105261288 A CN105261288 A CN 105261288A
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- worm
- gear
- transmission
- bar mechanism
- spur gear
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Transmission Devices (AREA)
Abstract
The invention provides a transmission four-bar mechanism teaching aid comprising a base plate, a transmission mechanism and a four-bar mechanism. The transmission mechanism and the four-bar mechanism are arranged on the two side surfaces of the base plate in a contrary mode. The transmission mechanism is connected to the four-bar mechanism, and is used for providing power for the four-bar mechanism. The four-bar mechanism comprises a rack, a first side link, a connecting rod and a second side link. The rack is arranged on the base plate. One end of the first side link is fixedly connected to the rack through a slide block, and the other end of the first side link is hinged with one end of the connecting rod. The slide block is provided with a fastening device used for limiting movements of the slide block. The other end of the connecting rod is hinged with one end of the second side link. The base plate is provided with a through port. The other end of the second link is connected to the transmission mechanism through the through port. According to the above transmission four-bar mechanism teaching aid, through the transmission mechanism and the four-bar mechanism arranged on the two side surfaces of the base plate in the contrary mode, the transmission mechanism provide power for the four-bar mechanism; the transmission efficiency is high; the stability is good; and the usage life is long.
Description
Technical field
The present invention relates to educational aid field, especially, relate to a kind of transmission four-bar mechanism teaching aid.
Background technology
Model teaching aid has extremely important status in the course of mechanical principle, it can the displaying content of courses of visual pattern, reducing the cognitive difficulty with understanding of student, causing the interest of Students ' Learning, make abstract principle specialize visualize, make mechanical classroom become entertaining, reality, can operate.
But, in existing mechanical teaching aid, only that some typical structures are made into independently teaching aid respectively, although its principle related to intuitively can be shown, but function is more single, only can demonstrate the transmission principle of a certain mechanism, in this presentation process, only can see transmission principle, the movement locus in this mechanism driving process cannot be known.
Summary of the invention
Based on this, the object of the invention is to provide that a kind of transmission efficiency is high, stability good, the transmission four-bar mechanism teaching aid of long service life, to solve the problems of the technologies described above.
For achieving the above object, the invention provides a kind of transmission four-bar mechanism teaching aid, comprise base plate and be opposingly arranged at gear train on described base plate two sides and four-bar mechanism, and described gear train and described four-bar mechanism are in transmission connection, for providing power for described four-bar mechanism, described four-bar mechanism comprises: frame, the first side link, connecting rod and the second side link, and described erecting is placed on described base plate; One end of described first side link is fixedly connected in described frame by slide block, and one end of the other end and described connecting rod is hinged, and described slide block is provided with the fastener for limiting described slide block movement; The other end of described connecting rod and one end of described second side link hinged; Described base plate offers port, and the other end of described second side link is connected with described gear train by described port.
Such as, described gear train comprises: Worm and worm-wheel gearing, chain-drive mechanism, Spur Gear Driving mechanism and bevel gear transmission; Described Worm and worm-wheel gearing is arranged on described base plate, and the end that imports into of described Worm and worm-wheel gearing is provided with actuating unit, for providing power; Described chain-drive mechanism import spreading out of to hold and being connected of end and described Worm and worm-wheel gearing into, spread out of and hold and the importing into hold and be connected of described Spur Gear Driving mechanism; Described Spur Gear Driving mechanism spreads out of importing into hold and being connected of end and described bevel gear transmission.
Such as, described second side link and described bevel gear transmission import into hold hinged.
Such as, described actuating unit comprises: motor and belt wheel; Described motor is fixed on described base plate, and described belt wheel is connected by belt with the rotating shaft of described motor
Such as, described belt wheel is provided with turning axle.
Such as, described Worm and worm-wheel gearing comprises: worm gear, worm screw, worm-wheel bracket, endless screw support;
Described worm gear is meshed with described worm screw, described worm gear is fixed on described base plate by described worm-wheel bracket, described belt wheel is fixedly connected with described worm screw by endless screw support, described worm gear is provided with worm-wheel shaft in its axis direction, and described worm gear is fixed on base plate by described endless screw support by one end of described worm-wheel shaft.
Such as, described chain-drive mechanism comprises drive sprocket and driven sprocket, and described drive sprocket is arranged at one end away from described worm gear of described worm-wheel shaft, and described drive sprocket is connected with described driven sprocket by chain.
Such as, described Spur Gear Driving mechanism comprises: initiatively spur gear, driven spur gear, spur gear support, described active spur gear is meshed with described driven spur gear, the diameter of described active spur gear is greater than the diameter of described driven spur gear, described active spur gear, described driven spur gear are fixed on described spur gear support respectively by gear shaft, described spur gear support is fixed on described base plate, and described driven sprocket is fixedly connected with described active spur gear by described gear shaft.
Such as, described bevel gear transmission comprises drive bevel gear and driven wheel of differential, described drive bevel gear is meshed with described driven wheel of differential, the diameter of described drive bevel gear is greater than the diameter of described driven wheel of differential, described drive bevel gear is connected with described first spur gear by described gear shaft, and described driven wheel of differential is connected with described second side link by described port.
Such as, the junction of described first side link and connecting rod, described connecting rod and described second side link offers mounting hole, described mounting hole for installing drawing instrument, to draw the movement locus of described four-bar mechanism.
The present invention has following beneficial effect: transmission four-bar mechanism teaching aid of the present invention, gear train on base plate two sides and four-bar mechanism is arranged at by opposing, gear train provides power for four-bar mechanism, and transmission efficiency is high, stability is good, long service life, to make four-bar mechanism under the drive of gear train, can be used for demonstrating double rocker mechanism, crank and rocker mechanism, double-crank mechanism, the transmission process of slider-crank mechanism and principle, and the transmission principle of gear drive, V belt translation can be demonstrated.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the transmission four-bar mechanism teaching aid of the preferred embodiment of the present invention;
Fig. 2 is the structural representation of the four-bar mechanism of the preferred embodiment of the present invention;
Fig. 3 is the structural representation at another visual angle embodiment illustrated in fig. 1;
Fig. 4 is the double rocker mechanism schematic diagram of the preferred embodiment of the present invention;
Fig. 5 is the crank and rocker mechanism of the preferred embodiment of the present invention;
Fig. 6 is the slider-crank mechanism of the preferred embodiment of the present invention;
Fig. 7 is the double rocker mechanism of the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can limit according to claim and cover is implemented.
Refer to Fig. 1, transmission four-bar mechanism 300 teaching aid 100 comprises base plate 1 and is opposingly arranged at gear train on base plate 1 two sides 200 and four-bar mechanism 300.
Gear train 200 and four-bar mechanism 300 are in transmission connection, for providing power for four-bar mechanism 300.
Refer to Fig. 2, four-bar mechanism 300 comprises: frame 3, first side link 4, connecting rod 5 and the second side link 6, frame 3 is arranged on base plate 1.
One end of first side link 4 is fixedly connected in frame 3 by slide block, and one end of the other end and connecting rod 5 is hinged, and slide block is provided with the fastener for limiting slide block movement.
The other end of connecting rod 5 and one end of the second side link 6 hinged.Base plate 1 offers port 2, and the other end of the second side link 6 is connected with gear train 200 by port 2.Such as, port 2 is hole.
So, by the gear train 200 on the opposing two sides being arranged at base plate 1 and four-bar mechanism 300, gear train 200 provides power for four-bar mechanism 300, and transmission efficiency is high, stability is good, long service life, to make four-bar mechanism 300 under the drive of gear train 200, can be used for demonstrating double rocker mechanism, crank and rocker mechanism, double-crank mechanism, the transmission process of slider-crank mechanism and principle, and the transmission principle of gear drive, V belt translation can be demonstrated.
Refer to Fig. 2, such as, connecting rod 5 comprises: bar 51, first loop bar 52 in first, in first, bar 51, first loop bar 52 is marked with scale.One end of first loop bar 52 is articulated with the second side link 6, the other end is provided with the first chute 53 along shaft.First chute 53 openend is provided with shrinking device 54.In first, one end of bar 51 is located in the first loop bar 52 by the first chute 53, this in first the other end of bar 51 be articulated with the first side link 4.
Preferably, shrinking device 54 is clamp nut; And for example, shrinking device 54 is bolt; And for example, shrinking device 54 is fixture.
For ease of calculating, in one embodiment, in first, bar 51 can slide in the first loop bar 52 along the first chute 53, directly parameter can be read by the scale on bar 51 in first and the first loop bar 52, so, by the parameter directly read, user is facilitated to carry out calculating operation.
Such as, the second side link 6 comprises: bar 61, second loop bar 62 in second, in second, bar 61, second loop bar 62 is marked with scale.
Such as, one end of second loop bar 62 is articulated with the first loop bar 51, the other end is provided with the second chute 63 along shaft, second chute 64 openend is provided with shrinking device 64, in second, one end of bar 61 is located in the second loop bar 62 by the second chute 63, this in second the other end passing hole 2 of bar 61 be fixedly connected with the first bevel gear 26.
Preferably, shrinking device 64 is clamp nut; And for example, shrinking device 64 is bolt; And for example, shrinking device 64 is fixture.
For ease of calculating, in one embodiment, in second, bar 61 can slide in the second loop bar 62 along the second chute 64, directly parameter can be read by the scale on bar 61 in second and the second loop bar 62, so, by the parameter directly read, user is facilitated to carry out calculating operation.
Preferably, frame 3 is provided with scale, to make, when a use operates, by the scale in frame 3, directly to read parameter, be convenient to calculate.
For ease of drawing movement locus so that student understands, such as, the first side link 4 offers mounting hole 9, for installing drawing instrument, to draw the movement locus of four-bar mechanism with the junction of connecting rod 5, connecting rod 5 and the second side link 6.
Such as, mounting hole 9 is an aperture.Such as, drawing instrument is pencil, so, can be drawn out the movement locus of four-bar mechanism by this pencil easily.
For ease of adjustment frame, such as, connecting rod 5 and the second side link 6 are adjustable rod member; And for example, frame 3 changes the length of frame 3 in mechanism by moving slider 7.And for example, by the length of regulating connecting rod 5, second side link 6, frame 3.
So, by adjustment frame, so that observe the mutual conversion process of double rocker mechanism (Fig. 4), crank and rocker mechanism (Fig. 5), slider-crank mechanism (Fig. 6), double rocker mechanism (Fig. 7) intuitively.
Referring again to Fig. 1, such as, gear train 200 comprises: Worm and worm-wheel gearing 210, chain-drive mechanism 220, Spur Gear Driving mechanism 230 and bevel gear transmission 240.
Worm and worm-wheel gearing 210 is arranged on base plate 1, and the end that imports into of Worm and worm-wheel gearing 210 is provided with actuating unit 260.Such as, actuating unit 260 is for providing power.
Chain-drive mechanism 220 import spreading out of to hold and being connected of end and Worm and worm-wheel gearing 210 into, spread out of and hold and the importing into hold and be connected of Spur Gear Driving mechanism 230.
Spur Gear Driving mechanism 230 spreads out of importing into hold and being connected of end and bevel gear transmission 240.
As shown in Figure 1, such as, actuating unit 260 comprises: motor 10 and belt wheel 13.Such as, motor 10 is fixed on base plate 1, and belt wheel 13 is connected by belt 12 with the rotating shaft of motor 10
Such as, belt wheel 13 is provided with turning axle 14.
As shown in Figure 1, such as, Worm and worm-wheel gearing 210 comprises: worm gear 17, worm screw 16, worm-wheel bracket 15, endless screw support 18.Worm gear 17 is meshed with worm screw 16, worm gear 17 is fixed on base plate 1 by worm-wheel bracket 15, belt wheel 13 is fixedly connected with worm screw 16 by endless screw support 18, and worm gear 17 is provided with worm gear 17 axle in its axis direction, and worm gear 17 is fixed on base plate 1 by endless screw support 18 by one end of worm gear 17 axle.
As shown in Figure 1, such as, chain-drive mechanism 220 comprises drive sprocket 19 and driven sprocket 20.Such as, drive sprocket 19 is arranged at one end away from worm gear 17 of worm gear 17 axle, and drive sprocket 19 is connected with driven sprocket 20 by chain 21.
As shown in Figure 1, such as, Spur Gear Driving mechanism 230 comprises: initiatively spur gear 22, driven spur gear 23, spur gear support 24.Such as, initiatively spur gear 22 is meshed with driven spur gear 23.Initiatively the diameter of spur gear 22 is greater than the diameter of driven spur gear 23.Initiatively spur gear 22, driven spur gear 23 are fixed on spur gear support 24 respectively by gear shaft, and spur gear support 24 is fixed on base plate 1, and driven sprocket 20 is fixedly connected with active spur gear 22 by gear shaft.
As shown in Figure 1, such as, bevel gear transmission 240 comprises drive bevel gear 25 and driven wheel of differential 26.Such as, drive bevel gear 25 is meshed with driven wheel of differential 26, and the diameter of drive bevel gear 25 is greater than the diameter of driven wheel of differential 26, and drive bevel gear 25 is connected with driven spur gear 23 by gear shaft.Driven wheel of differential 26 is connected with the second side link 6 by port 2.
For making gear train can drive four-bar mechanism work, please also refer to Fig. 1, Fig. 2 and Fig. 3, base plate 1 offers port 2, and the other end of the second side link 6 is by port 2 and bevel gear transmission 240.Such as, the second side link 6 and bevel gear transmission 240 import into hold hinged.So, the second side link 6 can be driven to work by bevel gear transmission 240.
Principle of work of the present invention is as follows:
In operation, motor 10 or rotation turning axle 14 provide power, afterwards by four transmissions such as the bevel gear drive of the Worm Wheel System of the V belt translation of actuating unit 260, Worm and worm-wheel gearing 210, the Chain conveyer of chain-drive mechanism 220, the Spur Gear Driving of Spur Gear Driving mechanism 230 and bevel gear transmission 240, power is sent to four-bar mechanism 300.
Thus, achieve the motion demonstrating of double rocker mechanism (as shown in Figure 4), crank and rocker mechanism (as shown in Figure 5), slider-crank mechanism (as shown in Figure 6), double rocker mechanism (as shown in Figure 7) respectively.
Further, four-bar mechanism 300 is in motion process, and the drawing tool arranged with the fixed connection place of connecting rod 5, connecting rod 5 and the second side link 6 by the first side link 4, draws out the movement locus in linkage motion process automatically.
From the above, compared to prior art, transmission four-bar mechanism teaching aid provided by the invention, tool has the following advantages:
One, four-bar mechanism and gear train are combined, provide one and both can demonstrate four-bar mechanism various forms and mutually transform, the demonstration teaching aid of multiple mechanical drive principle can be demonstrated again.
Two, in four-bar mechanism of the present invention, the second side link, connecting rod are adjustable rod member, frame changes its length in mechanism by the position of moving slider, the length of the second side link, connecting rod, frame in presentation process, can observe the mutual conversion process of double rocker mechanism, crank and rocker mechanism, double-crank mechanism, slider-crank mechanism intuitively.
Three, in bar, the first loop bar, second, bar, the second loop bar and slide rail are marked with scale in first, directly can provide the length parameter of each bar in operation, are convenient to calculate.
Four, between connecting rod and the first cradling piece, second, the junction of bar is equipped with aperture, can insert pen in aperture, automatically can draw rod member movement locus figure in operation, diverse in function, is convenient to teaching.
Five, gear train of the present invention provides motive power by motor or turning axle, four-bar mechanism motion is driven by V belt translation, Worm Wheel System, Chain conveyer, Spur Gear Driving and bevel gear drive, multiple mechanical drive principle can be reproduced intuitively, be convenient to student's understanding and understand.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a transmission four-bar mechanism teaching aid, is characterized in that, comprise base plate and be opposingly arranged at gear train on described base plate two sides and four-bar mechanism, and described gear train and described four-bar mechanism is in transmission connection, for providing power for described four-bar mechanism,
Described four-bar mechanism comprises: frame, the first side link, connecting rod and the second side link, and described erecting is placed on described base plate;
One end of described first side link is fixedly connected in described frame by slide block, and one end of the other end and described connecting rod is hinged, and described slide block is provided with the fastener for limiting described slide block movement;
The other end of described connecting rod and one end of described second side link hinged;
Described base plate offers port, and the other end of described second side link is connected with described gear train by described port.
2. transmission four-bar mechanism teaching aid according to claim 1, it is characterized in that, described gear train comprises: Worm and worm-wheel gearing, chain-drive mechanism, Spur Gear Driving mechanism and bevel gear transmission;
Described Worm and worm-wheel gearing is arranged on described base plate, and the end that imports into of described Worm and worm-wheel gearing is provided with actuating unit, for providing power;
Described chain-drive mechanism import spreading out of to hold and being connected of end and described Worm and worm-wheel gearing into, spread out of and hold and the importing into hold and be connected of described Spur Gear Driving mechanism;
Described Spur Gear Driving mechanism spreads out of importing into hold and being connected of end and described bevel gear transmission.
3. transmission four-bar mechanism teaching aid according to claim 2, is characterized in that, the importing into of described second side link and described bevel gear transmission is held hinged.
4. transmission four-bar mechanism teaching aid according to claim 2, it is characterized in that, described actuating unit comprises: motor and belt wheel; Described motor is fixed on described base plate, and described belt wheel is connected by belt with the rotating shaft of described motor.
5. transmission four-bar mechanism teaching aid according to claim 4, it is characterized in that, described belt wheel is provided with turning axle.
6. transmission four-bar mechanism teaching aid according to claim 2, it is characterized in that, described Worm and worm-wheel gearing comprises: worm gear, worm screw, worm-wheel bracket, endless screw support;
Described worm gear is meshed with described worm screw, described worm gear is fixed on described base plate by described worm-wheel bracket, described belt wheel is fixedly connected with described worm screw by endless screw support, described worm gear is provided with worm-wheel shaft in its axis direction, and described worm gear is fixed on base plate by described endless screw support by one end of described worm-wheel shaft.
7. transmission four-bar mechanism teaching aid according to claim 6, it is characterized in that, described chain-drive mechanism comprises drive sprocket and driven sprocket,
Described drive sprocket is arranged at one end away from described worm gear of described worm-wheel shaft, and described drive sprocket is connected with described driven sprocket by chain.
8. transmission four-bar mechanism teaching aid according to claim 7, is characterized in that, described Spur Gear Driving mechanism comprises: initiatively spur gear, driven spur gear, spur gear support,
Described active spur gear is meshed with described driven spur gear, the diameter of described active spur gear is greater than the diameter of described driven spur gear, described active spur gear, described driven spur gear are fixed on described spur gear support respectively by gear shaft, described spur gear support is fixed on described base plate, and described driven sprocket is fixedly connected with described active spur gear by described gear shaft.
9. transmission four-bar mechanism teaching aid according to claim 8, it is characterized in that, described bevel gear transmission comprises drive bevel gear and driven wheel of differential,
Described drive bevel gear is meshed with described driven wheel of differential, the diameter of described drive bevel gear is greater than the diameter of described driven wheel of differential, described drive bevel gear is connected with described first spur gear by described gear shaft, and described driven wheel of differential is connected with described second side link by described port.
10. transmission four-bar mechanism teaching aid according to claim 1, it is characterized in that, the junction of described first side link and connecting rod, described connecting rod and described second side link offers mounting hole, described mounting hole for installing drawing instrument, to draw the movement locus of described four-bar mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510759153.9A CN105261288A (en) | 2015-11-10 | 2015-11-10 | A transmission four-bar mechanism teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510759153.9A CN105261288A (en) | 2015-11-10 | 2015-11-10 | A transmission four-bar mechanism teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105261288A true CN105261288A (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510759153.9A Pending CN105261288A (en) | 2015-11-10 | 2015-11-10 | A transmission four-bar mechanism teaching aid |
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| CN (1) | CN105261288A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683560A (en) * | 2017-01-16 | 2017-05-17 | 韩用升 | Multifunctional hinge four-rod mechanism experimental platform |
| CN107650555A (en) * | 2017-08-23 | 2018-02-02 | 长沙明道信息科技有限公司 | The method and instrument of a kind of link design |
| CN110738902A (en) * | 2019-12-04 | 2020-01-31 | 吉林大学 | Self-assembling type track tracing duplicator |
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| CN202058361U (en) * | 2011-05-10 | 2011-11-30 | 湖州师范学院 | Hinging four-bar mechanism connecting rod curve drawing teaching instrument |
| CN103247218A (en) * | 2013-05-09 | 2013-08-14 | 廊坊职业技术学院 | Combined quick-changing type transmission mechanism teaching aid |
| CN103886803A (en) * | 2014-04-17 | 2014-06-25 | 重庆交通大学 | Integrated mechanical teaching aid |
| CN205247760U (en) * | 2015-11-10 | 2016-05-18 | 吕梁学院 | Transmission four -bar linkage teaching aid |
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2015
- 2015-11-10 CN CN201510759153.9A patent/CN105261288A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202058361U (en) * | 2011-05-10 | 2011-11-30 | 湖州师范学院 | Hinging four-bar mechanism connecting rod curve drawing teaching instrument |
| CN103247218A (en) * | 2013-05-09 | 2013-08-14 | 廊坊职业技术学院 | Combined quick-changing type transmission mechanism teaching aid |
| CN103886803A (en) * | 2014-04-17 | 2014-06-25 | 重庆交通大学 | Integrated mechanical teaching aid |
| CN205247760U (en) * | 2015-11-10 | 2016-05-18 | 吕梁学院 | Transmission four -bar linkage teaching aid |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106683560A (en) * | 2017-01-16 | 2017-05-17 | 韩用升 | Multifunctional hinge four-rod mechanism experimental platform |
| CN107650555A (en) * | 2017-08-23 | 2018-02-02 | 长沙明道信息科技有限公司 | The method and instrument of a kind of link design |
| CN110738902A (en) * | 2019-12-04 | 2020-01-31 | 吉林大学 | Self-assembling type track tracing duplicator |
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Application publication date: 20160120 |