CN203838956U - Crank rocking bar mechanism demonstration apparatus - Google Patents
Crank rocking bar mechanism demonstration apparatus Download PDFInfo
- Publication number
- CN203838956U CN203838956U CN201420237719.2U CN201420237719U CN203838956U CN 203838956 U CN203838956 U CN 203838956U CN 201420237719 U CN201420237719 U CN 201420237719U CN 203838956 U CN203838956 U CN 203838956U
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- CN
- China
- Prior art keywords
- crank
- rocking bar
- rocker mechanism
- hinged
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model provides a crank rocking bar mechanism demonstration apparatus. The crank rocking bar mechanism demonstration apparatus includes a crank rocking bar mechanism which is used for demonstrating the quick-return characteristic of the crank rocking bar mechanism, a hull which is used for installing the crank rocking bar mechanism, and two paddles. The crank rocking bar mechanism includes a disc mounted on the hull and capable of rotating around the central axis, a connecting rod whose one end is hinged to the disc, and a rocking bar whose one end is hinged to the other end of the connecting rod. At least two holes are disposed in the disc. The distance from each hole to the center of the disc is different. One end of the connecting rod is hinged to the edge of the disc or is hinged to any one of the holes through a hinge pin. The two paddles are connected with two ends of the rocking bar respectively, and can move under the effect of the rocking bar. According to the crank rocking bar mechanism, an effective working radius of the disc can be changed by changing the hinged position of the connecting rod on the disc, and thus a stroke coefficient ratio of the crank rocking bar mechanism can be changed.
Description
Background technology
The utility model relates to teaching aid, is specifically related to a kind of quickreturn characteristics that represents crank and rocker mechanism, and can change the crank and rocker mechanism apparatus for demonstrating of stroke coefficient ratio.
Background technology
Research about crank and rocker mechanism quickreturn characteristics is very ripe, and stroke coefficient ratio also can be calculated by concrete formula.But, on classroom, also there is no at present the apparatus for demonstrating of crank and rocker mechanism, be used for the quickreturn characteristics of crank and rocker mechanism vivo to represent to student.Existing crank and rocker mechanism cannot change the length of crank conventionally, is unfavorable for the research of bar elongate member and stroke coefficient ratio.
Utility model content
The purpose of this utility model is to provide a kind of crank and rocker mechanism apparatus for demonstrating, the quickreturn characteristics of crank and rocker mechanism can be represented to student, and change stroke coefficient ratio by the length that changes crank, checking bar elongate member.
The utility model for achieving the above object, has adopted following technical scheme.
The utility model provides a kind of crank and rocker mechanism apparatus for demonstrating, it is characterized in that, comprising: crank and rocker mechanism, for demonstrating the quickreturn characteristics of crank and rocker mechanism; Hull, for installing crank and rocker mechanism; And two quants, wherein, crank and rocker mechanism comprises: be arranged on hull the disk that can rotate around central shaft; The connecting rod that one end and disk are hinged; And the rocking bar that is hinged of the other end of one end and connecting rod, disk is provided with at least two holes, each pitch-row is all not identical from the distance of disc centre, one end of connecting rod and the edge of disk is hinged or be hinged by bearing pin and any one hole, two quants are connected with the two ends of rocking bar respectively, can under the effect of rocking bar, carry out paddling.
The crank and rocker mechanism that the utility model is related, can also have such feature: wherein, quant comprises: two looms that are connected with the two ends of rocking bar respectively; Two oar covers that are connected respectively at two looms; And be fixedly mounted on respectively two blades that two oars put, and between oar cover and loom, being hinged by pin, oar cover relatively loom turns an angle.
The effect of utility model and effect
According to crank and rocker mechanism apparatus for demonstrating of the present utility model, by the link motion that rotarily drives of disk, connecting rod drives rocking bar to circle, and rocking bar drives quant to slide, and vivo the drive characteristic of crank and rocker mechanism is shown.
In addition, can, by changing the articulated position of connecting rod on disk, change effective radius of clean-up of disk, thereby change the stroke coefficient ratio of crank and rocker mechanism.Select the different effective radius of clean-up of disk, can also verify the bar elongate member of crank and rocker mechanism.
Brief description of the drawings
Fig. 1 is the structural representation of crank and rocker mechanism apparatus for demonstrating; With
Fig. 2 is the articulated position schematic diagram of connecting rod and disk.
Embodiment
Below in conjunction with accompanying drawing, the crank and rocker mechanism apparatus for demonstrating related to the utility model is elaborated.
Embodiment
Fig. 1 is the structural representation of crank and rocker mechanism apparatus for demonstrating.
As shown in Figure 1, crank and rocker mechanism apparatus for demonstrating 10 comprises crank and rocker mechanism 11, hull 12 and quant 13.
Crank and rocker mechanism 11, for demonstrating the quickreturn characteristics of crank and rocker mechanism, comprises disk 14, connecting rod 15, rocking bar 16, disc holder 17 and rocker bracket 18.
Disk 14 has central shaft 19, and central shaft 19 is arranged on disc holder 17, and disk 14 can rotate around its central shaft 19.
The edge of connecting rod 15 one end and disk 14 is hinged, and the other end and rocking bar 16 are hinged.
Rocking bar 16 is T shape structure, and one end that long straight portion divides and rocking bar 16 are hinged, and the upper end of the other end and rocker bracket 18 is hinged.
Hull 12 is for installing disc holder 17 and rocker bracket 18.
Quant 13 swings back and forth under the drive of crank and rocker mechanism 11, and hull 12 is advanced in water (not shown).Quant 13 comprises loom 20, loom 21, pin 22, pin 23, oar cover 24, oar cover 25, blade 26 and blade 27.
As shown in Figure 1, the upper end of loom 20 and loom 21 is fixedly mounted on respectively the two ends of T shape rocking bar 16.Pin 22 is connected the lower end of loom 20 with the upper end of oar cover 24, pin 23 is connected the lower end of loom 21 with the upper end of oar cover 25.Oar cover 24 and oar cover 25 have the slotted eye of 105o in pin junction, oar cover 24 and oar cover 25 can be turned an angle with respect to loom 20 and loom 21 respectively.Blade 26 and blade 27 are fixedly mounted on respectively on oar cover 24 and oar cover 25.
Central shaft 19 outer ends of disk 14 connect motor belt (not shown), operator can be placed on crank remote sensing mechanism apparatus for demonstrating 10 in water (not shown), then open motor (not shown), drive disk 14 to rotate by central shaft 19, disk 14 drivening rods 15 swing, connecting rod 15 drives rocking bar 16 to swing back and forth, and loom by quant 13 of rocking bar 16 and oar cover drive blade 26 and blade 27 paddling back and forth in water (not shown).Connecting rod 15 is effective radius of clean-up of disk 14 with the line at disk 14 articulated position and disk 14 centers, in the time that disk 14 drive link 15 swing to this line conllinear, connecting rod 15 is in dead-centre position, when connecting rod 15 continues to swing, backhaul time used is shorter, i.e. the quickreturn characteristics of crank and rocker mechanism 11.Quant 13 amplifies the quickreturn characteristics of crank and rocker mechanism 11, blade 26 and blade 27 can turn an angle with respect to loom 20 and loom 21 respectively, thereby change the contact area of blade 26 and blade 27 and water, promote hull 12 and advance in water (not shown).
Fig. 2 is the articulated position schematic diagram of connecting rod and disk.
As shown in Figure 2, the hinged position of connecting rod 15 and disk 14 can change.Disk 14 is provided with hole 28, hole 29, the position in 31, four holes in hole 30 and hole and the distance at disk 14 centers and increases successively.Operator can be hinged on connecting rod 15 on hole 28, hole 29, hole 30 and hole 31 successively, change effective radius of clean-up (being the crank length of crank and rocker mechanism) of disk 14, thereby change the stroke coefficient ratio of crank and rocker mechanism 11, observe respectively the kinetic characteristic of crank and rocker mechanism 11, can recognize the bar elongate member of crank and rocker mechanism 11 and the impact of the transmission process of crank length on crank and rocker mechanism 11.
The effect of embodiment and effect
The crank and rocker mechanism apparatus for demonstrating that the present embodiment is related, rotate by driven by motor disk 14, disk 14 drives rocking bar 16 to swing by connecting rod 15, and rocking bar 16 drives quant 13 to slidably reciprocate in water, thereby the quickreturn characteristics of crank and rocker mechanism is vivo shown.
This crank and rocker mechanism apparatus for demonstrating, can also change by changing the articulated position of connecting rod 15 on disk 14 effective radius of clean-up of disk 14, thereby change the stroke coefficient ratio of crank and rocker mechanism, can verify the bar elongate member of crank and rocker mechanism, allow student recognize the impact of the disk radius of clean-up on crank and rocker mechanism kinetic characteristic.
Certainly, the related crank and rocker mechanism apparatus for demonstrating of the utility model is not merely defined in the structure described in above embodiment.These are only the basic explanation under the utility model design, and any equivalent transformation of doing according to the technical solution of the utility model all should belong to protection domain of the present utility model.
Claims (2)
1. a crank and rocker mechanism apparatus for demonstrating, is characterized in that, comprising:
Crank and rocker mechanism, for demonstrating the quickreturn characteristics of crank and rocker mechanism;
Hull, for installing described crank and rocker mechanism; And
Two quants, for amplifying the demonstration effect of described quickreturn characteristics,
Wherein, described crank and rocker mechanism comprises: be arranged on described hull the disk that can rotate around central shaft; The connecting rod that one end and described disk are hinged; And the rocking bar that is hinged of the other end of one end and described connecting rod,
Described disk is provided with at least two holes, and each described pitch-row is all not identical from the distance of described disc centre,
Described one end of described connecting rod and the edge of described disk is hinged or by bearing pin and described in any one hole be hinged,
Two described quants are connected with the two ends of described rocking bar respectively, can under the effect of described rocking bar, carry out paddling.
2. crank and rocker mechanism apparatus for demonstrating according to claim 1, is characterized in that:
Wherein, described quant comprises: two looms that are connected with the two ends of described rocking bar respectively; Two oar covers that are connected respectively at two described looms; And be fixedly mounted on respectively two blades that two described oars put,
Between described oar cover and described loom, be hinged by pin, described oar cover can turn an angle by relatively described loom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420237719.2U CN203838956U (en) | 2014-05-09 | 2014-05-09 | Crank rocking bar mechanism demonstration apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420237719.2U CN203838956U (en) | 2014-05-09 | 2014-05-09 | Crank rocking bar mechanism demonstration apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203838956U true CN203838956U (en) | 2014-09-17 |
Family
ID=51516770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420237719.2U Expired - Fee Related CN203838956U (en) | 2014-05-09 | 2014-05-09 | Crank rocking bar mechanism demonstration apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203838956U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597345A (en) * | 2018-03-20 | 2018-09-28 | 武汉纺织大学 | A kind of portable theory of mechanics mechanism apparatus for demonstrating taught through lively activities |
| CN109436217A (en) * | 2018-12-25 | 2019-03-08 | 海安格斯系统集成科技有限公司 | The intelligent detecting ship of foul water |
| CN112809461A (en) * | 2021-01-20 | 2021-05-18 | 东莞市凯勒帝数控科技有限公司 | Processing equipment with inner hole grinding function for speed change tail hook |
| CN113060783A (en) * | 2021-03-30 | 2021-07-02 | 江西师范大学 | Even device of puting in of treating agent is administered to little water body water environment in storehouse pond |
| CN117533489A (en) * | 2024-01-10 | 2024-02-09 | 山东工艺美术学院 | Rowing paddle convenient for regulating and controlling ship speed |
-
2014
- 2014-05-09 CN CN201420237719.2U patent/CN203838956U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108597345A (en) * | 2018-03-20 | 2018-09-28 | 武汉纺织大学 | A kind of portable theory of mechanics mechanism apparatus for demonstrating taught through lively activities |
| CN108597345B (en) * | 2018-03-20 | 2019-07-30 | 武汉纺织大学 | A kind of portable theory of mechanics mechanism apparatus for demonstrating taught through lively activities |
| CN109436217A (en) * | 2018-12-25 | 2019-03-08 | 海安格斯系统集成科技有限公司 | The intelligent detecting ship of foul water |
| CN112809461A (en) * | 2021-01-20 | 2021-05-18 | 东莞市凯勒帝数控科技有限公司 | Processing equipment with inner hole grinding function for speed change tail hook |
| CN113060783A (en) * | 2021-03-30 | 2021-07-02 | 江西师范大学 | Even device of puting in of treating agent is administered to little water body water environment in storehouse pond |
| CN117533489A (en) * | 2024-01-10 | 2024-02-09 | 山东工艺美术学院 | Rowing paddle convenient for regulating and controlling ship speed |
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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: 20140917 Termination date: 20150509 |
|
| EXPY | Termination of patent right or utility model |