CN204480589U - A kind of four-bar linkage Teaching instrument - Google Patents
A kind of four-bar linkage Teaching instrument Download PDFInfo
- Publication number
- CN204480589U CN204480589U CN201520167805.5U CN201520167805U CN204480589U CN 204480589 U CN204480589 U CN 204480589U CN 201520167805 U CN201520167805 U CN 201520167805U CN 204480589 U CN204480589 U CN 204480589U
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- CN
- China
- Prior art keywords
- side link
- connecting rod
- frame
- bar linkage
- bar
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- Expired - Fee Related
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Abstract
The utility model discloses a kind of four-bar linkage Teaching instrument, comprise frame, side link and connecting rod, described side link is two, in two side links, one is fixed length side link, another root is elongated side link, one end of fixed length side link is slidably connected in frame, the other end and rod hinge connection, one end of elongated side link is fixedly connected in frame, the other end is hinged on connecting rod slidably, one end that connecting rod is positioned at outside elongated side link and connecting rod hinge point is provided with chalk sleeve, chalk sleeve can insert chalk in order to draw coupler-point curve, described frame is provided with multiple magnetic patch towards blackboard side.The utility model can demonstrate multiple four-bar linkage, easy to use, and demonstrating effect is good.
Description
Technical field
The utility model relates to a kind of examination teaching aid, particularly relates to a kind of four-bar linkage Teaching instrument, can be used for the on-the-spot teaching of the correlated curriculums such as mechanical principle.
Background technology
In engineering, common mechanism belongs to plane mechanism mostly, and planar linkage mechanism is its main Types, and modal is four-bar mechanism, and it not only applies extensive especially, but also is the basis of multi-bar linkage composition.When four-bar linkage select one of them component fixing as frame after, the component be directly connected with frame is called side link, the component be not directly connected with frame is called connecting rod, the pivotal component of complete cycle can be done and be referred to as crank, in a certain angular range, rocking bar can only be called by the component of reciprocally swinging.Whether can do circumferential rotation type according to side link, three kinds of citation forms, i.e. crank and rocker mechanisms can be divided into, double-crank mechanism and double rocker mechanism, and these formal arguments are mainly determined by the relation between the long change of bar and bar length.
The teaching of four-bar linkage is a very important link in theory of mechanisms, at present this mechanism's teaching equipment mainly adopts wooden, the long stationary structure of bar or carries out flash demo by computer software, in using area, observation effect, function synthesized, have certain limitation.
Summary of the invention
The purpose of this utility model is that providing a kind of demonstrates multiple four-bar linkage form and the four-bar linkage Teaching instrument that conversion is convenient, demonstrating effect is good.
For achieving the above object, the solution that the utility model adopts is: a kind of four-bar linkage Teaching instrument, comprise frame, side link and connecting rod, described side link is two, in two side links, one is fixed length side link, another root is elongated side link, one end of fixed length side link is connected in frame slidably, the other end and rod hinge connection, one end of elongated side link is fixedly connected in frame, the other end is hinged on connecting rod slidably, one end that connecting rod is positioned at outside elongated side link and connecting rod hinge point is provided with chalk sleeve, described frame is provided with multiple adsorbable magnetic patch on blackboard towards blackboard side.
Above-mentioned elongated side link comprises interior bar and the body of rod, and interior bar is slidably mounted in the body of rod.
Above-mentioned frame all marks on bar in blackboard side, connecting rod and elongated side link scale.
Above-mentioned chalk sleeve is made up of hollow studs, setting nut and hold-down nut, setting nut coordinates with hollow studs, for chalk sleeve is arranged on connecting rod, chalk can be placed in the hole of hollow studs one end, hold-down nut is screwed in the other end of hollow studs, is provided with the spring that chalk can be against blackboard surface in it.
The utility model has following effect:
(1) due to frame, elongated side link, length of connecting rod is adjustable, and all has scale to indicate, be easy to realize and verify the evolution of three kinds of basic four-bar linkage forms;
(2) owing to being equipped with magnetic patch on rear side of frame, can be adsorbed on magnet board, be very suitable for demonstration and the observation of classroom instruction;
(3) because connecting rod is provided with chalk sleeve, the drafting of coupler-point curve can be realized, expand the tutorial function of four-bar linkage further;
(4) lightweight, volume is little, easy to carry and use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of Fig. 1 mid frame.
Fig. 3 is the structural representation of fixed length side link in Fig. 1.
Fig. 4 is the structural representation of connecting rod in Fig. 1.
Fig. 5 is the structural representation of elongated side link in Fig. 1.
Fig. 6 is the A direction view of Fig. 5.
Fig. 7 is the structural representation of chalk sleeve in Fig. 1.
The structural representation of Fig. 8 to be the utility model be crank and rocker mechanism Teaching instrument.
The structural representation of Fig. 9 to be the utility model be double rocker mechanism Teaching instrument.
The structural representation of Figure 10 to be the utility model be parallel double crank mechanism Teaching instrument.
In figure: 1-frame, 2-fixed length side link, 3-connecting rod, 4-elongated side link 5-chalk sleeve, 101-protecgulum, 102-bonnet, 103-sunk screw, 104-magnetic patch, 201-body of rod, 202-slide block, 203-ball, 204-connecting pin, 205-guide, 206-packing ring, 207-attaching nut, 301-body of rod, 302-connecting pin, 303-guide, 304-sliding sleeve, 305-holding screw, 306-back-up ring, 401-interior bar 402-body of rod, 403-bonnet, 404-sunk screw, 405-stop screw, 406-holding screw, 407-connecting pin, 408-guide, 409-packing ring, 410-connecting pin, 411-back-up ring, 501-hollow studs 502-setting nut, 503-hold-down nut
Embodiment
As shown in Figure 1, the utility model comprises frame 1, fixed length side link 2, connecting rod 3, elongated side link 4 and chalk sleeve 5, the structure of frame 1 as shown in Figure 2, form primarily of protecgulum 101, bonnet 102 and magnetic patch 104, protecgulum 101 is connected with bonnet 102 sunk screw 103, protecgulum 101 is provided with scale marker, and is processed with square hole along its length.Bonnet 102 is processed with multiple groove on blackboard side, and on protecgulum 101 side, be processed with square groove, magnetic patch 104 is installed in groove.
The structure of fixed length side link 2 as shown in Figure 3, be made up of the body of rod 201, slide block 202, ball 203, connecting pin 204, guide 205, packing ring 206 and attaching nut 207, after connecting pin 204 being passed slide block 202 and frame protecgulum 101 during installation, put guide 205 and the body of rod 201, then with attaching nut 207, each assembly of fixed length side link 2 is linked together with packing ring 206.Slide block 202 loaded in its square groove with connecting pin 204 before each assembly of frame is closed, and for reducing wearing and tearing, cut out arc groove at two end faces up and down of slide block 202 and put into ball 203, when slide block 202 slides in frame 1, the length of frame 1 changes thereupon.
The structure of connecting rod 3 as shown in Figure 4, is made up of the body of rod 301, connecting pin 302, guide 303, sliding sleeve 304, holding screw 305 and back-up ring 306, and one end of the body of rod 301 is connected with back-up ring 306 one end with fixed length side link 2 by connecting pin 302, guide 303.Sliding sleeve 304 to be enclosed within the body of rod 301 and slidably, and fixing and obtain corresponding length of connecting rod by holding screw 305 when moving to a certain position, the front end face of the body of rod 301 is provided with scale marker, so that length of connecting rod reading.
The structure of elongated side link 4 as shown in Figure 5, Figure 6, is made up of interior bar 401, the body of rod 402, bonnet 403, sunk screw 404, stop screw 405, holding screw 406, connecting pin 407, guide 408, packing ring 409, connecting pin 410 and back-up ring 411.Interior bar 401 is placed in the square groove of the body of rod 402, the body of rod 402 and bonnet 403 are coupled together by sunk screw 404, interior bar 401 is provided with scale and indicates, the body of rod 402 is processed with viewport, when interior bar 401 slides into a certain position, use holding screw 406 can fix its length and carry out the long reading of bar, interior bar 401 one end is provided with stop screw 405 and can prevents interior bar 401 from departing from the body of rod 402.The upper end of interior bar 401 is connected on sliding sleeve 304 by connecting pin 407, guide 408, packing ring 409 and back-up ring 411.The lower end of the body of rod 402 is articulated with in frame 1 by connecting pin 410 and back-up ring 411.
Chalk sleeve 5 is installed on elongated side link 4 with on the connecting rod one end outside connecting rod 3 pin joint, its structure as shown in Figure 7, be made up of hollow studs 501, setting nut 502 and hold-down nut 503, during installation, hollow studs 501 is passed connecting rod 3, and be fixed on connecting rod 3 by setting nut 502 and hold-down nut 503, during use, chalk is placed in the through hole of hollow studs 501 one end, the other end is built-in with the hold-down nut 503 of spring by screw-in and makes chalk be close on magnet board, to draw the coupler-point curve of the four-bar mechanism under the long relation of certain bar.
The utility model is less than or equal to the long sum of all the other two bar bars when the length sum that meet bar elongate member i.e. most quarter butt and most stock, while one of the adjacent bar that is connected with most quarter butt when being frame, the utility model uses as crank and rocker mechanism, as shown in Figure 8.
The utility model is less than or equal to the long sum of all the other two bar bars when the length sum that meet bar elongate member i.e. most quarter butt and most stock, while most quarter butt relative bar when being frame, the utility model uses as double rocker mechanism, as shown in Figure 9.
The utility model equals the long sum of all the other two bar bars when the length sum that meet bar elongate member i.e. most quarter butt and most stock, connecting rod is equal with frame length, two side links be crank and length is shorter time, the utility model uses as parallel double crank mechanism, as shown in Figure 10.
The foregoing is only one of the utility model preferred embodiment, it is pointed out that to those of ordinary skill in the art under the prerequisite not departing from the utility model use principle, some modification and improvement can also be done, also should be considered as the utility model protection domain.
Claims (4)
1. a four-bar linkage Teaching instrument, comprise frame (1), side link and connecting rod (3), described side link is two, it is characterized in that: in two side links, one is fixed length side link (2), another is elongated side link (4), one end of fixed length side link (2) is connected in frame (1) slidably, the other end and connecting rod (3) hinged, one end of elongated side link (4) is fixedly connected in frame (1), the other end is hinged on connecting rod (3) slidably, connecting rod is positioned at elongated side link (4) and is provided with chalk sleeve (5) with the one end outside connecting rod (3) pin joint, described frame (1) is provided with multiple adsorbable magnetic patch (104) on blackboard towards blackboard side.
2. a kind of four-bar linkage Teaching instrument according to claim 1, it is characterized in that: described elongated side link (4) comprises interior bar (401) and the body of rod (402), and interior bar (401) is slidably mounted in the body of rod (402).
3. a kind of four-bar linkage Teaching instrument according to claim 1, is characterized in that: described frame (1) on the interior bar (401) of blackboard side, connecting rod (3) and elongated side link (4) all mark have scale.
4. a kind of four-bar linkage Teaching instrument according to claim 1, it is characterized in that: described chalk sleeve (5) is by hollow studs (501), setting nut (502) and hold-down nut (503) composition, setting nut (502) coordinates with hollow studs (501), for chalk sleeve (5) is arranged on connecting rod (3), chalk is placed in the hole of hollow studs (501) one end, hold-down nut (503) is screwed in the other end of hollow studs (501), the spring that chalk can be against blackboard surface is installed in it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167805.5U CN204480589U (en) | 2015-03-24 | 2015-03-24 | A kind of four-bar linkage Teaching instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520167805.5U CN204480589U (en) | 2015-03-24 | 2015-03-24 | A kind of four-bar linkage Teaching instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204480589U true CN204480589U (en) | 2015-07-15 |
Family
ID=53636367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520167805.5U Expired - Fee Related CN204480589U (en) | 2015-03-24 | 2015-03-24 | A kind of four-bar linkage Teaching instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204480589U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| WO2022151216A1 (en) * | 2021-01-14 | 2022-07-21 | 苏州迈澜医疗科技有限公司 | Mechanism having remote center of motion, and operating device |
-
2015
- 2015-03-24 CN CN201520167805.5U patent/CN204480589U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| WO2022151216A1 (en) * | 2021-01-14 | 2022-07-21 | 苏州迈澜医疗科技有限公司 | Mechanism having remote center of motion, and operating 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20160324 |