CN203882529U - Four-bar linkage mechanism teaching demonstration prop - Google Patents
Four-bar linkage mechanism teaching demonstration prop Download PDFInfo
- Publication number
- CN203882529U CN203882529U CN201420185247.0U CN201420185247U CN203882529U CN 203882529 U CN203882529 U CN 203882529U CN 201420185247 U CN201420185247 U CN 201420185247U CN 203882529 U CN203882529 U CN 203882529U
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- crank
- base
- connecting rod
- teaching demonstration
- groove
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Abstract
The utility model relates to a four-bar linkage mechanism teaching demonstration prop, which comprises a crank I (1), a crank II (4), a connecting rod (2), a motor (6) and a base (7), wherein the motor is arranged below the base, and a shaft of the motor is located above the base. The four-bar linage mechanism teaching demonstration prop is characterized by further comprising two parallel grooves arranged on the base (7), a bracket (5) with a groove, a guide block (8), a disk (11), a slideway (12) and a sliding block (10). The assemblies form different four-bar linkage mechanism teaching demonstration props through different connection modes. The four-bar linkage mechanism teaching demonstration prop can display a four-bar linkage mechanism visually, and can also acquire an accurate solution through a sensor. In addition, the size of the mechanism is changeable, thereby having high flexibility.
Description
Technical field
The utility model relates to a kind of instrument of drawing multiple plane four coupler-point curves, it can demonstrate the most frequently used several lanar four rod mechanism forms: crank and rocker mechanism, double-crank mechanism, double rocker mechanism and slider-crank mechanism, and draw out the various practical coupler-point curve of these mechanisms.
Background technology
Four-bar mechanism and be the basic structure that forms many machineries by the mechanism of its differentiation, as planer, the toggle of engine etc., play an important role in mechanical manufacturing field.Four-bar mechanism is had to a large amount of research both at home and abroad, be mainly divided into both direction: four-bar mechanism is showed with form in kind, or utilize computer to carry out emulation to four-bar mechanism.
Four-bar mechanism is carried out to computer analog, can utilize the programming softwares such as VC, VB, matlab, can carry out easily theoretical analysis, obtain accurate displacement, speed, the isoparametric value of acceleration, and and the three-dimensional software simulation dirigibility higher than having.But the difficulty of programming is larger, code is comparatively complicated, and the personnel of development sequence are had relatively high expectations, and the construction cycle is longer.On the other hand, can utilize the copying of existing software, as adams, solidworks, UG etc., can carry out easily modeling and simulating, but dirigibility are relatively poor.Four-bar mechanism is carried out to emulation, can accurately analyze the parameters of motion process, but intuitive is poor.Four-bar mechanism is showed with form in kind, can give understanding intuitively, but be difficult to obtain accurate data, and cost is higher.
Summary of the invention
The utility model can combine the two, can either by four-bar mechanism visualize out, can be obtained comparatively accurately and be separated by sensor again, and the size of mechanism be variable, has higher dirigibility.But when the data of sensor are processed, may there is certain error.
By reference to the accompanying drawings, be described as follows:
A kind of four-bar mechanism teaching demonstration stage property, comprise crank I1, crank II4, connecting rod 2, motor 6, base 7, motor is arranged on base below, its axle is positioned at base top, and it also comprises two the parallel grooves, the support 5 with groove, guide block 8, disk 11, slideway 12, the slide block 10 that on base 7, arrange; These assemblies are by four different connecting rod teaching demonstration stage properties of connecting and composing of different modes;
1) crank and rocker mechanism and double-crank mechanism
Crank I1, connecting rod 2, crank II4 are rotationally connected successively, and support 5 two ends are bolted in the groove of base 7; Crank 1 is fixed on the output shaft of motor 6, crank 4 is bolted in support 5 grooves and is rotationally connected with bolt, by changing the position of bolt in groove, thereby can change the length of each member, this mechanism can change between crank and rocker mechanism and double-crank mechanism;
2), double rocker mechanism
Crank I1, connecting rod 2, crank II4 are rotationally connected successively, and support 5 two ends are bolted in the groove of base 7; Crank I1 is bolted in support 5 grooves and is rotationally connected with bolt, disk 10 centers are fixed on the output shaft of motor 6, crank 4 is connected with disk by the guide block 8 on disk 10, guide block 8 moves in a circle, crank 4 can around be fixed on that axle 9 on base 7 swings and with guide block 8 relative slidings, total forms double rocker mechanism;
3), slider-crank mechanism
Crank I1 and connecting rod 2 are rotationally connected, and connecting rod 2 is hinged with slide block 10, and slide block 10 can move left and right on guide rail 12, and guide rail 12 is arranged on base 7.
On described connecting rod 2, acceleration transducer can be set, the track of connecting rod can import in computing machine by acceleration transducer, treated corresponding displacement, speed, the accelerating curve of obtaining.
On described each rod member, one-pen can be set, each rod member track can be drawn on paper.
Beneficial effect
The characteristic of this teaching aid is the position of frame, connecting rod, rocking bar the parameter such as length there is changeability, bearing is equipped with in hinged place, easy accessibility, there is very high dirigibility, and the track of connecting rod can import in computing machine by sensor into, can obtain corresponding displacement through processing, speed, the curve of acceleration.
The utility model can be drawn out the coupler-point curve of continuous sealing also can draw the interrupted coupler-point curve that reflects lever point movement velocity.This mechanism can be used as the teaching of audiovisual aids for mechanical principle course, also can be applied to Machine Design department and relevant R&D institution.
Brief description of the drawings
Fig. 1 is the utility model crank and rocker mechanism, double-crank mechanism axonometric drawing;
Fig. 2 is the utility model double rocker mechanism axonometric drawing;
Fig. 3 is the utility model slider-crank mechanism axonometric drawing
Fig. 4 is the utility model crank and rocker mechanism, double-crank mechanism vertical view
Fig. 5 is the utility model double rocker mechanism vertical view;
Fig. 6 is the utility model slider-crank mechanism vertical view
In figure 1, crank I2, connecting rod 3, bearing 4, crank II5, support 6, motor 7, base 8, guide block 9, axle 10, slide block 11, disk 12, guide rail
Embodiment
The citation form of four-bar linkage can be divided into crank and rocker mechanism by the motion conditions of two side links, double-crank mechanism, double rocker mechanism, in the time that being changed into moving sets, revolute pair can develop into slider-crank mechanism, this teaching aid will be demonstrated these four kinds of mechanisms, according to fixing different mechanisms on the base that do not coexist of four connecting rod forms, wherein double rocker mechanism and crank and rocker mechanism can be realized by the variation of length in a mechanism.
1, crank and rocker mechanism, double-crank mechanism
As shown in Figure 1, support 5 is bolted on the groove of base 7, and crank 1 is fixed on the output shaft of motor 6, crank 4 is bolted in support 5 grooves and is rotationally connected with bolt, on connecting rod 2, acceleration transducer is housed, each rotation place is hinged, is connected by bearing 3.In this mechanism, by changing the position of bolt in groove, thereby can change the length of each member, by changing member physical dimension, this mechanism can change between crank and rocker mechanism and double-crank mechanism, and bearing 3 can reduce frictional resistance, makes motion more smooth and easy.
When mechanism kinematic, motor 6 drives crank 1 to rotate, and the acceleration transducer on connecting rod 2, by being wirelessly transmitted in computer, obtains acceleration transducer, obtains speed by integration, displacement curve.More direct for athletic performance is obtained, can on connecting rod 2, fix one-pen, directly by present the trajectory table of connecting rod 2 paper.
2, double rocker mechanism
As shown in Figure 2, disk 10 is fixed on the axle of motor, and in this mechanism, crank II4 is connected with disk by the guide block 8 on disk 10, and crank II4 can swing around the axle 9 being fixed on base 7.The layout of other members is substantially identical with crank and rocker mechanism.Crank I1, connecting rod 2, crank II4 are rotationally connected successively, and support 5 two ends are bolted in the groove of base 7; Crank I1 is bolted in support 5 grooves and is rotationally connected with bolt;
When mechanism kinematic, driven by motor disk 10 rotates, and guide block 8 moves in a circle, and simultaneously, around the rotation of set bolt axis, crank II4 rotates around axle 9, and with guide block 8 relative slidings, thereby drivening rod 2 and crank I1 motion.
3, slider-crank mechanism
As shown in Figure 3, when mechanism kinematic, motor 6 drives crank 1 to rotate, and crank 1 is with movable slider 10 to do linear reciprocating motion on guide rail 12 by connecting rod 2, and guide rail 12 is arranged on base 7.
In sum, these four connecting rod teaching aids can be realized crank and rocker mechanism, double-crank mechanism, double rocker mechanism, the function of slider-crank mechanism, the size of member has changeability, has embodied the ubiquity of mechanism, and hinge place adopts the unique design of bearing to make motion more smooth, can allow everybody have more directly understanding to four-bar mechanism, and sensor and the computer application quantification of moving, shows with more accurate form, for theoretical analysis provides foundation.
Claims (3)
1. a four-bar mechanism teaching demonstration stage property, comprise crank I(1), crank II(4), connecting rod (2), motor (6), base (7), motor is arranged on base below, its axle is positioned at base top, it is characterized in that: it also comprises upper two parallel grooves, the support (5) with groove, guide block (8), disk (11), slideway (12), the slide block (10) arranging of base (7); These assemblies are by four different connecting rod teaching demonstration stage properties of connecting and composing of different modes;
1) crank and rocker mechanism and double-crank mechanism
Crank I(1), connecting rod (2), crank II(4) be rotationally connected successively, support (5) two ends are bolted in the groove of base (7); Crank (1) is fixed on the output shaft of motor (6), crank (4) is bolted in support (5) groove and is rotationally connected with bolt, by changing the position of bolt in groove, thereby can change the length of each member, this mechanism can change between crank and rocker mechanism and double-crank mechanism;
2), double rocker mechanism
Crank I(1), connecting rod (2), crank II(4) be rotationally connected successively, support (5) two ends are bolted in the groove of base (7); Crank I(1) be bolted in support (5) groove and be rotationally connected with bolt, disk (10) center is fixed on the output shaft of motor (6), crank (4) is connected with disk by the guide block (8) on disk (10), guide block (8) moves in a circle, crank (4) can around be fixed on that axle (9) on base (7) swings and with guide block (8) relative sliding, total forms double rocker mechanism;
3), slider-crank mechanism
Crank I(1) be rotationally connected with connecting rod (2), connecting rod (2) is hinged with slide block (10), and slide block (10) can move left and right on guide rail (12), and guide rail (12) is arranged on base (7).
2. a kind of four-bar mechanism teaching demonstration stage property according to claim 1, it is characterized in that, on described connecting rod (2), acceleration transducer can be set, the track of connecting rod can import computing machine into by acceleration transducer, treated corresponding displacement, speed, the accelerating curve of obtaining.
3. a kind of four-bar mechanism teaching demonstration stage property according to claim 1, is characterized in that, on described each rod member, one-pen can be set, and each rod member track can be drawn on paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185247.0U CN203882529U (en) | 2014-04-16 | 2014-04-16 | Four-bar linkage mechanism teaching demonstration prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185247.0U CN203882529U (en) | 2014-04-16 | 2014-04-16 | Four-bar linkage mechanism teaching demonstration prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203882529U true CN203882529U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420185247.0U Expired - Fee Related CN203882529U (en) | 2014-04-16 | 2014-04-16 | Four-bar linkage mechanism teaching demonstration prop |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464494A (en) * | 2014-12-25 | 2015-03-25 | 北京理工大学 | Teaching analyzing instrument of planar linkage mechanism |
| CN104504989A (en) * | 2014-12-31 | 2015-04-08 | 天津大学 | Typical mechanism motion analysis modular teaching device |
| CN105193613A (en) * | 2015-08-18 | 2015-12-30 | 广西大学 | Manual downward feeding device capable of electromechanically controlling moxa sticks to move left and right |
| CN105390051A (en) * | 2015-11-16 | 2016-03-09 | 浙江工业大学之江学院 | Portable assembled theoretical mechanics teaching aid |
| CN106491349A (en) * | 2015-09-06 | 2017-03-15 | 广西大学 | A kind of Electromechanical Control moxa roll moves left and right manually feed arrangement downwards |
| CN106950336A (en) * | 2017-03-23 | 2017-07-14 | 沈阳理工大学 | One kind becomes track amplitude type material experiment device |
| CN107121524A (en) * | 2017-03-23 | 2017-09-01 | 沈阳理工大学 | One kind becomes trajectory shape section bar material experimental provision |
| CN107264134A (en) * | 2017-05-31 | 2017-10-20 | 中山市翔实机械设备有限公司 | One kind is imparted knowledge to students with mechanical four square gauge |
| 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 |
| CN109662867A (en) * | 2019-02-22 | 2019-04-23 | 苏州大学 | Based on the improved ankle rehabilitation institution of Stewart platform |
| CN110264851A (en) * | 2019-06-17 | 2019-09-20 | 南京航空航天大学 | A kind of experimental facilities for mechanics innovation experimental teaching |
-
2014
- 2014-04-16 CN CN201420185247.0U patent/CN203882529U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104464494A (en) * | 2014-12-25 | 2015-03-25 | 北京理工大学 | Teaching analyzing instrument of planar linkage mechanism |
| CN104504989B (en) * | 2014-12-31 | 2017-06-06 | 天津大学 | A kind of typical mechanism mechanism module instructional device |
| CN104504989A (en) * | 2014-12-31 | 2015-04-08 | 天津大学 | Typical mechanism motion analysis modular teaching device |
| CN105193613A (en) * | 2015-08-18 | 2015-12-30 | 广西大学 | Manual downward feeding device capable of electromechanically controlling moxa sticks to move left and right |
| CN106491349A (en) * | 2015-09-06 | 2017-03-15 | 广西大学 | A kind of Electromechanical Control moxa roll moves left and right manually feed arrangement downwards |
| CN105390051B (en) * | 2015-11-16 | 2017-10-03 | 浙江工业大学之江学院 | Portable assembly rational mechanics teaching aid |
| CN105390051A (en) * | 2015-11-16 | 2016-03-09 | 浙江工业大学之江学院 | Portable assembled theoretical mechanics teaching aid |
| CN106950336A (en) * | 2017-03-23 | 2017-07-14 | 沈阳理工大学 | One kind becomes track amplitude type material experiment device |
| CN107121524A (en) * | 2017-03-23 | 2017-09-01 | 沈阳理工大学 | One kind becomes trajectory shape section bar material experimental provision |
| CN106950336B (en) * | 2017-03-23 | 2019-12-03 | 沈阳理工大学 | A kind of change track amplitude type material experiment device |
| CN107121524B (en) * | 2017-03-23 | 2019-12-03 | 沈阳理工大学 | A kind of change trajectory shape profile material experimental provision |
| CN107264134A (en) * | 2017-05-31 | 2017-10-20 | 中山市翔实机械设备有限公司 | One kind is imparted knowledge to students with mechanical four square gauge |
| CN107264134B (en) * | 2017-05-31 | 2019-03-29 | 中山市翔实机械设备有限公司 | A kind of mechanical four square gauges of teaching |
| 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 |
| CN109662867A (en) * | 2019-02-22 | 2019-04-23 | 苏州大学 | Based on the improved ankle rehabilitation institution of Stewart platform |
| CN110264851A (en) * | 2019-06-17 | 2019-09-20 | 南京航空航天大学 | A kind of experimental facilities for mechanics innovation experimental teaching |
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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: 20141015 Termination date: 20150416 |
|
| EXPY | Termination of patent right or utility model |