CN203910157U - Four-bar mechanism evolution teaching aid - Google Patents
Four-bar mechanism evolution teaching aid Download PDFInfo
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- CN203910157U CN203910157U CN201420278428.8U CN201420278428U CN203910157U CN 203910157 U CN203910157 U CN 203910157U CN 201420278428 U CN201420278428 U CN 201420278428U CN 203910157 U CN203910157 U CN 203910157U
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- crank
- arc track
- bar mechanism
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Abstract
The utility model discloses a four-bar mechanism evolution teaching aid comprising a four-bar mechanism composed of a crank, a connecting rod, a rocking bar, a crank seat, and a rocking bar seat. The rocking bar is transformed into a fixed arc track supported by a track seat. The hinging point of the connecting rod and the rocking bar and the fixed arc track are in sliding fit so as to form a first slider. The fixed arc track is infinitely prolonged so as to be further transformed into a fixed linear track. The four-bar mechanism is deformed and evolved into a slider-crank mechanism. The connecting rod is transformed into a free arc track. The hinging point of the crank and the connecting rod and the free arc track are in sliding fit so as to form a second slider. The first slider is transformed into a slide rail supported by the sliding seat. The slide rail is connected with the free arc track. The four-bar mechanism is deformed and evolved into a double-slider mechanism. The free arc track is infinitely prolonged so as to be transformed into a free linear track. The four-bar mechanism is evolved into a sine mechanism. In virtue of the evolutionary process of the four-bar mechanism, simple explanation can be carried out and the explanation of teachers is facilitated in order to arouse students' interests and improve classroom teaching quality.
Description
(1) technical field:
The utility model relates to mechanical principle teaching instrument, is specially a kind of four-bar mechanism evolution teaching aid, to assist teacher to teach and to help classmate to understand the differentiation of four-bar mechanism.
(2) background technology:
Mechanical principle is a mechanical important specialized core course in university, its knowledge especially with the evolution of four-bar mechanism compared with indigestibility.
Through investigation, also do not have at present a set of complete, succinct, portable teaching aid to teach for teacher.
(3) utility model content:
Teaching purpose in line with succinct, portable etc., the utility model proposes a kind of four-bar mechanism evolution teaching aid.
Can realize the utility model four-bar mechanism evolution teaching aid of above-mentioned teaching purpose, its technical scheme comprises four-bar mechanism, described four-bar mechanism comprises the crank being connected through the hinge, connecting rod and rocking bar and crank base and rocking bar core, described crank is installed on the motor output shaft of crank base, described rocking bar is installed in the rotating shaft of rocking bar core, difference is that described rocking bar is transformed to the fixedly arc track being supported by railroad shoe, the hinge point of described connecting rod and rocking bar and fixedly arc track are slidably matched and are transformed to the first slide block, the unlimited prolongation of described fixedly arc track is further transformed to fixedly rectilinear orbit.
By the conversion with upper member element, described four-bar mechanism shape is evolved into slider-crank mechanism, and the circular motion of rocking bar is converted into the rectilinear motion of the first slide block.
Further conversion, described connecting rod is transformed to free arc track, described crank becomes the second slide block with the hinge point of connecting rod with moving cooperation of free arc track sliding, and described the first slide block is transformed to the slide rail being supported by the slide in railroad shoe, and described slide rail connects free arc track.
By the conversion with upper member element, described four-bar mechanism shape is evolved into double-slider mechanism, and the circular motion of crank is converted into the rectilinear motion of the second slide block along the slip of free arc track and slide rail along slide.
Further conversion, the unlimited prolongation of described free arc track is transformed to free rectilinear orbit.
By the conversion with upper member element, described four-bar mechanism shape is evolved into sine mechanism, and the circular motion of crank is converted into slide rail along the rectilinear motion of slide, and the sine function of crank angle and the rectilinear motion of slide rail distance is directly proportional.
Further design, described four-bar mechanism can be located on worktable and demonstrate, and described worktable is steel plate, and described crank base, rocking bar core and railroad shoe are the magnet base being adsorbed on steel plate; Described crank, connecting rod and rocking bar are adjustable and retractable bar.
Crank base, rocking bar core and railroad shoe as frame adopt magnet location, can arbitrarily change the position of frame, and the crank of engages adjustable collapsing length, connecting rod and rocking bar, and the space that can realize each rod member is hinged.
The beneficial effects of the utility model:
The utility model four-bar mechanism evolution teaching aid is by showing the evolutionary process of four-bar mechanism, and knowwhy simplification, imagery by abstract, not only facilitate teacher to tell about, and the classmates' that are more convenient for understanding, improves Classroom Teaching effectively.
(4) accompanying drawing explanation:
Fig. 1 is the structural representation of traditional four-bar mechanism.
Fig. 2 is the structural representation that Fig. 1 four-bar mechanism is deformed into the utility model the first embodiment (curved guide rail mechanism).
Fig. 3 is the structural representation that Fig. 2 bend rail mechanism is deformed into the utility model the second embodiment (slider-crank mechanism).
Fig. 4 is the structural representation that Fig. 3 slider-crank mechanism is deformed into the third embodiment of the utility model (double-slider mechanism).
Fig. 5 is the structural representation that Fig. 4 double-slider mechanism is deformed into the 4th kind of embodiment of the utility model (sine mechanism).
Figure number sign: 1, crank; 2, connecting rod; 3, rocking bar; 4, crank base; 5, rocking bar core; 6, fixing arc track; 7, railroad shoe; 8, the first slide block; 9, fixing rectilinear orbit; 10, free arc track; 11, the second slide block; 12, slide; 13, slide rail; 14, free rectilinear orbit; 15, web joint; 16, bearing; 17, knurled nut; 18, gib screw; 19, motor output shaft; 20, rotating shaft; 21, link.
(5) embodiment:
Below in conjunction with accompanying drawing illustrated embodiment, the technical solution of the utility model is described further.
The utility model four-bar mechanism evolution teaching aid comprises five groups of four-bar mechanisms.
First group of four-bar mechanism is traditional four-bar mechanism, comprise crank 1, connecting rod 2 and rocking bar 3 and crank base 4 and rocking bar core 5, described crank 1, connecting rod 2 and rocking bar 3 are connected through the hinge, the main body of described hinge is hinge main shaft, the two axial ends of described hinge main shaft is provided with bearing 16, described bearing 16 is located by axle rank and lining and by knurled nut 17 fixed positions, the crank 1 being mutually hinged and connecting rod 2 or connecting rod 2 are installed on respectively the two ends of hinge main shaft with rocking bar 3 by bearing 16; The body of rod of described crank 1, connecting rod 2 and rocking bar 3 is the scalable adjuster bar of adjustable length, described scalable adjuster bar is two joint slide bars, two joint slide bars are by the structure sliding connection of slide rail and chute, along glide direction, on a slide bar, offer row's unthreaded hole, on another slide bar, offer a threaded hole, corresponding to described threaded hole, dispose the gib screw 18 screwing with it, as shown in Figure 1.
Described crank base 4 comprises cover for seat, motor and magnet, is located at cover for seat top in described motor, and motor output shaft 19 stretches out cover for seat top, is located at bottom cover for seat and by bottom capping in described magnet; Described rocking bar core 5 comprises cover for seat, rotating shaft 20 and magnet, described rotating shaft 20 is installed on cover for seat top by (vertical) bearing 16, in described magnet, be located at cover for seat bottom and by bottom capping. described crank base 4 and rocking bar core 5 by magnet adsorption on steel worktable, described crank 1 is connected with the motor output shaft 19 on crank base 4, described rocking bar 3 is connected with the rotating shaft 20 on rocking bar core 5, as shown in Figure 1.
Second group of four-bar mechanism is arc track mechanism, to form by the distortion of first group of tradition four-bar mechanism, comprise the member that traditional four-bar mechanism is all, wherein use fixedly arc track 6 to substitute rocking bar 3, the axle head of the hinge main shaft of former connecting rod 2 and rocking bar 3 is snug fit in the arc chute of fixing arc track 6, and this slip axle head develops into the first slide block 8; Described fixedly arc track 6 is supported on steel worktable by two ends railroad shoe 7, and described railroad shoe 7 bottoms are provided with the magnet of absorption steel worktable, as shown in Figure 2.
The 3rd group of four-bar mechanism is slider-crank mechanism, to form by second group of arc track deformation, comprise all members of arc track mechanism, wherein use fixedly rectilinear orbit 9 to substitute fixedly arc track 6, the first slide block 8 and fixedly rectilinear orbit 9 are slidably matched, described fixedly rectilinear orbit 9 is supported on steel worktable by two ends railroad shoe 7, and described railroad shoe 7 bottoms are provided with the magnet of absorption steel worktable, as shown in Figure 3.
The 4th group of four-bar mechanism is double-slider mechanism, to form by the 3rd group of slider-crank mechanism distortion, comprise all members of slider-crank mechanism, wherein with free arc track 10, substitute connecting rod 2, former connecting rod 2 is snug fit in the arc chute of free arc track 10 with the axle head of the hinge main shaft of crank 1, this slip axle head develops into the second slide block 11, described the first slide block 8 develops into slide rail 13, described slide rail 13 is supported by the slide 12 in railroad shoe 7, between slide rail 13 and free arc track 10, by link 21, be connected, as shown in Figure 4.
The 5th group of four-bar mechanism is sine mechanism, to form by the 4th group of double-slider mechanism distortion, comprise all members of double-slider mechanism, wherein free arc track 10 unlimited prolongations are become to free rectilinear orbit 14, described the second slide block 11 is slidably matched with free rectilinear orbit 14, slide rail 13 is connected by web joint 15 with free rectilinear orbit 14, as shown in Figure 5.
Claims (4)
1. four-bar mechanism evolution teaching aid, comprise four-bar mechanism, described four-bar mechanism comprises the crank (1) being connected through the hinge, connecting rod (2) and rocking bar (3) and crank base (4) and rocking bar core (5), described crank (1) is installed on the motor output shaft (19) of crank base (4), described rocking bar (3) is installed in the rotating shaft (20) of rocking bar core (5), it is characterized in that: described rocking bar (3) is transformed to the fixedly arc track (6) being supported by railroad shoe (7), the hinge point of described connecting rod (2) and rocking bar (3) and fixedly arc track (6) are slidably matched and are transformed to the first slide block (8), the unlimited prolongation of described fixedly arc track (6) is further transformed to fixedly rectilinear orbit (9), described four-bar mechanism shape is evolved into slider-crank mechanism.
2. four-bar mechanism evolution teaching aid according to claim 1, it is characterized in that: described connecting rod (2) is transformed to free arc track (10), described crank (1) is slidably matched and becomes the second slide block (11) with hinge point and the free arc track (10) of connecting rod (2), described the first slide block (8) is transformed to the slide rail (13) being supported by the slide (12) in railroad shoe (7), described slide rail (13) connects free arc track (10), and described four-bar mechanism shape is evolved into double-slider mechanism.
3. four-bar mechanism evolution teaching aid according to claim 2, is characterized in that: the unlimited prolongation of described free arc track (10) is transformed to free rectilinear orbit (14), and described four-bar mechanism shape is evolved into sine mechanism.
4. according to the four-bar mechanism evolution teaching aid described in any one in claim 1～3, it is characterized in that: described four-bar mechanism is located on worktable and is demonstrated, described worktable is steel plate, and described crank base (4), rocking bar core (5) and railroad shoe (7) are the magnet base being adsorbed on steel plate; Described crank (1), connecting rod (2) and rocking bar (3) are adjustable and retractable bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278428.8U CN203910157U (en) | 2014-05-28 | 2014-05-28 | Four-bar mechanism evolution teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278428.8U CN203910157U (en) | 2014-05-28 | 2014-05-28 | Four-bar mechanism evolution teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203910157U true CN203910157U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420278428.8U Expired - Fee Related CN203910157U (en) | 2014-05-28 | 2014-05-28 | Four-bar mechanism evolution teaching aid |
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| CN (1) | CN203910157U (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332103A (en) * | 2014-11-25 | 2015-02-04 | 沈阳建筑大学 | Portable plane mechanism synthesis demonstration teaching tool |
| CN104568399A (en) * | 2014-12-02 | 2015-04-29 | 广西大学 | Link mechanism experiment table with length-changeable connecting rod |
| CN105043257A (en) * | 2015-08-10 | 2015-11-11 | 苏州听毅华自动化设备有限公司 | Automatic scanner capable of oblique scanning |
| CN105788437A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal plane mechanism combined type teaching aid |
| CN105788435A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal crank guide rod slide block mechanism combined type teaching aid |
| CN105788436A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal plane linkage combined type teaching aid |
| CN107389330A (en) * | 2017-08-15 | 2017-11-24 | 武汉科技大学 | A kind of combined four-bar linkage experimental provision of clearance-type |
| CN108961974A (en) * | 2017-05-21 | 2018-12-07 | 湖北职业技术学院 | A kind of planetary gear feed screw nut gradual change telescoping crank |
| CN111236828A (en) * | 2020-01-20 | 2020-06-05 | 国网山东省电力公司潍坊供电公司 | Lifting device for zinc oxide arrester resistive current tester |
| CN113465870A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113465868A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113465867A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465871A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN113465869A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two side blade grids |
| CN113567085A (en) * | 2021-08-20 | 2021-10-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation device |
-
2014
- 2014-05-28 CN CN201420278428.8U patent/CN203910157U/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332103A (en) * | 2014-11-25 | 2015-02-04 | 沈阳建筑大学 | Portable plane mechanism synthesis demonstration teaching tool |
| CN104332103B (en) * | 2014-11-25 | 2016-08-24 | 沈阳建筑大学 | A kind of Portable plane synthesis of mechanism demonstration teaching aid |
| CN104568399A (en) * | 2014-12-02 | 2015-04-29 | 广西大学 | Link mechanism experiment table with length-changeable connecting rod |
| CN105043257A (en) * | 2015-08-10 | 2015-11-11 | 苏州听毅华自动化设备有限公司 | Automatic scanner capable of oblique scanning |
| CN105788437A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal plane mechanism combined type teaching aid |
| CN105788435A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal crank guide rod slide block mechanism combined type teaching aid |
| CN105788436A (en) * | 2016-02-16 | 2016-07-20 | 南昌大学 | Horizontal plane linkage combined type teaching aid |
| CN108961974A (en) * | 2017-05-21 | 2018-12-07 | 湖北职业技术学院 | A kind of planetary gear feed screw nut gradual change telescoping crank |
| CN107389330A (en) * | 2017-08-15 | 2017-11-24 | 武汉科技大学 | A kind of combined four-bar linkage experimental provision of clearance-type |
| CN111236828A (en) * | 2020-01-20 | 2020-06-05 | 国网山东省电力公司潍坊供电公司 | Lifting device for zinc oxide arrester resistive current tester |
| CN111236828B (en) * | 2020-01-20 | 2021-08-10 | 国网山东省电力公司潍坊供电公司 | Lifting device for zinc oxide arrester resistive current tester |
| CN113465870A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side parallel blade grid high-speed wind tunnel gust simulation device |
| CN113465868A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two parallel blade grids on two sides |
| CN113465867A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Single-side single-blade-grid high-speed wind tunnel gust simulation device |
| CN113465871A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Parallel binary cascade high-speed wind tunnel gust simulation device |
| CN113465869A (en) * | 2021-08-20 | 2021-10-01 | 中国空气动力研究与发展中心高速空气动力研究所 | High-speed wind tunnel gust simulation device with two side blade grids |
| CN113567085A (en) * | 2021-08-20 | 2021-10-29 | 中国空气动力研究与发展中心高速空气动力研究所 | Binary cascade high-speed wind tunnel gust simulation 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: 20141029 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |