CN203931332U - Four-bar linkage demonstration teaching aid - Google Patents
Four-bar linkage demonstration teaching aid Download PDFInfo
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- CN203931332U CN203931332U CN201420278425.4U CN201420278425U CN203931332U CN 203931332 U CN203931332 U CN 203931332U CN 201420278425 U CN201420278425 U CN 201420278425U CN 203931332 U CN203931332 U CN 203931332U
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- base
- side link
- worktable
- teaching aid
- bar
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Abstract
The utility model discloses a kind of four-bar linkage demonstration teaching aid, comprise the side link I, connecting rod and the side link II that are connected through the hinge, also comprise base I, base II and steel worktable, the upper motor of installing of described base I, base I bottom arranges magnet, described base II top arranges rotating shaft, and base II bottom arranges magnet, and described side link I, connecting rod and side link II are scalable adjuster bar; Described base I and base II are adsorbed on steel worktable front, and described side link I is installed on the motor output shaft of base I, and described side link II is installed in the rotating shaft of base II, and described steel worktable is located in worktable pitch adjustment mechanism.The utility model adopts magnet fixed frame, can arbitrarily change position, side link I, connecting rod and side link II adopt space articulated manner adjustable length, avoid occurring in rotation process the phenomenon that member is interfered mutually, increase the turnover mechanism for workbench of teaching aid, embodied attractive in appearance, the portable advantage of teaching aid.
Description
Technical field:
The utility model relates to mechanical principle teaching teaching aid, is specially a kind of four-bar linkage demonstration teaching aid.
Background technology:
Mechanical principle is one of most important specialized core course of mechanical major, in the time telling about the three basic forms of it (crank and rocker mechanism, double-crank mechanism and double rocker mechanism) of four-bar linkage in planar linkage mechanism, for representing more intuitively the content of courses, usually adopt four-bar linkage teaching aid aided education.
But described four-bar linkage teaching aid, at the aspect such as function, properity Shortcomings, can not meet the teaching requirement of explaining the profound in simple terms, still need to continue to improve.
Utility model content:
From succinct, portable designing requirement, the utility model proposes a kind of four-bar linkage demonstration teaching aid, mainly complete formation and the function presentation of crank and rocker mechanism in four-bar linkage, double-crank mechanism, double rocker mechanism.
Can realize the four-bar linkage demonstration teaching aid of above-mentioned demo function, comprise the side link I, connecting rod and the side link II that are connected through the hinge, difference is also to comprise base I, base II and steel worktable, the upper motor of installing of described base I, base I bottom arranges magnet, described base II top arranges rotating shaft, and base II bottom arranges magnet, and described side link I, connecting rod and side link II are scalable adjuster bar; Described base I and base II are adsorbed on the front of steel worktable, and described side link I is installed on the motor output shaft of base I, and described side link II is installed in the rotating shaft of base II, and described steel worktable is located in worktable pitch adjustment mechanism.
In the utility model structure, by the change in location of base I and base II, and the length adjustment of side link I, connecting rod and side link II, obtain the member of different length, make it to meet bar length and condition, can obtain the three basic forms of it of four-bar linkage, i.e. crank and rocker mechanism, double-crank mechanism and double rocker mechanism; Described four-bar linkage is located on steel worktable and is demonstrated, and by regulating the angle of inclination of steel worktable, facilitates student's observational learning on seat.
A kind of structure of described pitch adjustment mechanism comprises framework, track, sliding pin, manual bayonet lock and support bar, described track cross level is located at framework both sides, on track, offer horizontal concrete chute and draw-in groove, described draw-in groove is along the even interval of chute, described sliding pin is located at steel worktable two bottom sides, both sides sliding pin coordinates with both sides chute, described manual bayonet lock is located at steel worktable bottom one side, its position is corresponding to draw-in groove, described support bar is inclined in the steel worktable back side, the upper end hinge steel worktable of support bar, the lower end hinge framework of support bar, move steel worktable by chute, regulate the angle of inclination of support bar to realize the displaying of steel worktable different angles, and insert draw-in groove by manual bayonet lock and fix steel operating position.
A kind of structure of described hinge comprises hinge main shaft, and the two axial ends of described hinge main shaft is provided with bearing, and the side link I being mutually hinged and connecting rod or connecting rod and side link II are installed on respectively the two ends of hinge main shaft by bearing.
A kind of structure of described scalable adjuster bar comprises two slide bars that coordinate by slide rail and chute, on a slide bar, offer row's unthreaded hole along glide direction, on another slide bar, offer a threaded hole and screw gib screw, after the length adjustment of two slide bars is suitable, tightens gib screw and fix two slide bars.
Described chute conventional design is dovetail groove.
The beneficial effects of the utility model:
The base I of the utility model four-bar linkage demonstration teaching aid and base II (being equivalent to frame) adopt magnet to fix, can arbitrarily change shelf position, side link I, connecting rod and side link II adopt space articulated manner adjustable length, avoid occurring in rotation process the phenomenon that member is interfered mutually, increase the turnover mechanism for workbench of teaching aid, embodied attractive in appearance, the portable advantage of teaching aid.
Brief description of the drawings:
Fig. 1 is the structural representation of four-bar linkage in a kind of embodiment of the utility model.
Fig. 2 (a) is the front axonometric drawing of steel worktable and pitch adjustment mechanism thereof in Fig. 1 embodiment.
Fig. 2 (b) is the back side axonometric drawing of steel worktable and pitch adjustment mechanism thereof in Fig. 1 embodiment.
Fig. 3 is the structural representation of pitch adjustment mechanism in Fig. 2 (a), Fig. 2 (b).
Fig. 4 is the structural representation of scalable adjuster bar in Fig. 1 embodiment.
Fig. 5 (a) is the inner structure schematic diagram of base I in Fig. 1 embodiment.
Fig. 5 (b) is the inner structure schematic diagram of base II in Fig. 1 embodiment.
Fig. 6 is the structural representation of hinge arrangement in Fig. 1 embodiment.
Figure number mark: 1, side link I; 2, connecting rod; 3, side link II; 4, base I; 5, base II; 6, steel worktable; 7, motor; 8, magnet; 9, rotating shaft; 10, framework; 11, track; 12, sliding pin; 13, manual bayonet lock; 14, support bar; 15, chute; 16, draw-in groove; 17, slide bar; 18, threaded hole; 19, dovetail groove; 20, gib screw; 21, knurled nut; 22, hinge main shaft; 23, bearing; 24, lining; 25, bottom; 26, cover for seat; 27, key seat; 28, unthreaded hole.
Embodiment:
Below in conjunction with accompanying drawing illustrated embodiment, the technical solution of the utility model is described further.
The utility model four-bar linkage demonstration teaching aid comprises four-bar linkage and steel worktable 6 and worktable pitch adjustment mechanism.
Described worktable pitch adjustment mechanism comprises framework 10 (adopting square box body), article two, track 11, two sliding pins 12, a manual bayonet lock 13 and two support bars 14, described track 11 levels are installed on a left side for framework 10, on right inside side, left, on right track 11, symmetry offers a left side, right horizontal concrete chute 15, left, a left side for right rail 15 tops, the spaced apart draw-in groove 16 (along chute 15 directions) that is provided with symmetrically and evenly on right track 11, described draw-in groove 16 is communicated with chute 15 downwards, two sliding pin 12 left sides, right symmetrical slip is located at a left side, in right rail 15, described manual bayonet lock 13 arranges corresponding to a sliding pin 12, both are by key seat 27 integrated installations, a left side for oblique setting, the parallel left side of being located at of right support bar 14, between right track 11, the lower end of described support bar 14 is hinged in the rear side inner face of framework 10, as Fig. 2 (a), Fig. 2 (b), described in Fig. 3, show.
Described steel worktable 6 frame orienteds 10 backward skew back are put, the bottom left and right side of steel worktable 6 connects the key seat 27 (being integrated with sliding pin 12 and manual bayonet lock 13) of a sideslip untie-sell 12 and opposite side, the upper end of the back side of steel worktable 6 and support bar 14 is hinged, and as described in Fig. 2 (a), Fig. 2 (b), Fig. 3, shows.
Described four-bar linkage comprises side link I1, connecting rod 2 and side link II3 and base I4 and base II5.
Described side link I1, connecting rod 2 and side link II3 are connected through the hinge, the main structure body of described hinge is hinge main shaft 22, the two axial ends of described hinge main shaft 22 is provided with bearing 23, described bearing 23 is located by axle rank and lining 24 and by knurled nut 21 fixed positions, the side link I1 being mutually hinged and connecting rod 2 or connecting rod 2 and side link II3 are installed on respectively the two ends of hinge main shaft 22 by bearing 23; The body of rod of described side link I1, connecting rod 2 and side link II3 is the scalable adjuster bar of adjustable length, described scalable adjuster bar is two joint slide bars 17, two joint slide bars 17 are by the structure sliding connection of slide rail and chute (adopting dovetail groove 19), on a slide bar 17, offer row's unthreaded hole 28 along glide direction, on another slide bar 17, offer a threaded hole 18, dispose the gib screw 20 screwing with it corresponding to described threaded hole 18, as shown in Fig. 4, Fig. 6.
Described base I4 comprises cover for seat 26, motor 7 and magnet 8, is located at cover for seat 26 tops in described motor 7, and the output shaft of motor 7 stretches out cover for seat 26 tops, is located at cover for seat 26 bottoms and by bottom 25 cappings in described magnet 8; Described base II5 comprises cover for seat 26, rotating shaft 9 and magnet 8, described rotating shaft 9 is installed on cover for seat 26 tops by (vertical) bearing 23, in described magnet 8, be located at cover for seat 26 bottoms and by bottom 25 cappings, as shown in Fig. 1, Fig. 5 (a), Fig. 5 (b).
Described base I4 and base II5 are adsorbed in by magnet 8 on the front of steel worktable 6, and described side link I1 is connected with motor 7 output shafts in base I4, and described side link II3 is connected with the rotating shaft 9 of base II5, as shown in Figure 1.
Use of the present utility model.
Determine the length of side link I1, connecting rod 2 and side link II3 by the length adjustment of scalable adjuster bar, and corresponding (absorption) good base I4 and the position of base II5 on steel worktable 6 of arranging, make the long condition that meets respectively crank and rocker mechanism, double-crank mechanism and double rocker mechanism of bar.
Under motor 7 drives, in mechanism, side link I and side link II can realize predetermined complete cycle rotation or oscillating motion.
Claims (5)
1. four-bar linkage demonstration teaching aid, comprise the side link I (1) being connected through the hinge, connecting rod (2) and side link II (3), it is characterized in that: also comprise base I (4), base II (5) and steel worktable (6), the upper motor (7) of installing of described base I (4), base I (4) bottom arranges magnet (8), described base II (5) top arranges rotating shaft (9), base II (5) bottom arranges magnet (8), described side link I (1), connecting rod (2) and side link II (3) are scalable adjuster bar, described base I (4) and base II (5) are adsorbed on steel worktable (6) front, described side link I (1) is installed on motor (7) output shaft of base I (4), described side link II (3) is installed in the rotating shaft (9) of base II (5), and described steel worktable (6) is located in worktable pitch adjustment mechanism.
2. four-bar linkage demonstration teaching aid according to claim 1, it is characterized in that: described pitch adjustment mechanism comprises framework (10), track (11), sliding pin (12), manually bayonet lock (13) and support bar (14), described track (11) level is located at framework (10) both sides, on track (11), offer horizontal concrete chute (15) and draw-in groove (16), described draw-in groove (16) is along evenly interval of chute (15), described sliding pin (12) is located at steel worktable (6) two bottom sides, both sides sliding pin (12) coordinates with both sides chute (15), described manual bayonet lock (13) is located at steel worktable (6) bottom one side, its position is corresponding to draw-in groove (16), described support bar (14) is inclined in steel worktable (6) back side, the upper end hinge steel worktable (6) of support bar (14), the lower end hinge framework (10) of support bar.
3. four-bar linkage demonstration teaching aid according to claim 1 and 2, it is characterized in that: the structure of described hinge comprises hinge main shaft (22), the two axial ends of described hinge main shaft (22) is provided with bearing (23), and the side link I (1) being mutually hinged and connecting rod (2) or connecting rod (2) and side link II (3) are installed on respectively the two ends of hinge main shaft (22) by bearing (23).
4. four-bar linkage demonstration teaching aid according to claim 1 and 2, it is characterized in that: described scalable adjuster bar comprises two slide bars (17) that coordinate by slide rail and chute, on a slide bar (17), offer row's unthreaded hole (28) along glide direction, on another slide bar (17), offer a threaded hole (18) and screw gib screw (20).
5. four-bar linkage demonstration teaching aid according to claim 4, is characterized in that: described chute is dovetail groove (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278425.4U CN203931332U (en) | 2014-05-28 | 2014-05-28 | Four-bar linkage demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420278425.4U CN203931332U (en) | 2014-05-28 | 2014-05-28 | Four-bar linkage demonstration teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931332U true CN203931332U (en) | 2014-11-05 |
Family
ID=51827107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420278425.4U Expired - Fee Related CN203931332U (en) | 2014-05-28 | 2014-05-28 | Four-bar linkage demonstration teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381216A (en) * | 2017-07-18 | 2017-11-24 | 余昆 | One kind is adjustable to tear piece machine open |
-
2014
- 2014-05-28 CN CN201420278425.4U patent/CN203931332U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381216A (en) * | 2017-07-18 | 2017-11-24 | 余昆 | One kind is adjustable to tear piece machine open |
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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: 20141105 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |