CN207473937U - Parallel motion teaching aid - Google Patents
Parallel motion teaching aid Download PDFInfo
- Publication number
- CN207473937U CN207473937U CN201721086874.9U CN201721086874U CN207473937U CN 207473937 U CN207473937 U CN 207473937U CN 201721086874 U CN201721086874 U CN 201721086874U CN 207473937 U CN207473937 U CN 207473937U
- Authority
- CN
- China
- Prior art keywords
- coupling bar
- teaching aid
- rod piece
- parallel motion
- fixed column
- 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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- Display Racks (AREA)
Abstract
A kind of parallel motion teaching aid, it is characterised in that including teaching aid main body, fixed column, rod piece, coupling bar, connecting hole, connecting pin, drawing hole, drawing board.It is attached between rod piece and rod piece, rod piece and teaching aid main body using coupling bar, due to being provided with connecting hole and connecting pin on coupling bar, and coupling bar is made by plastic material, light wear-resisting, therefore can carry out repeatedly splicing and dismantling between connecting hole and coupling bar, form different four-bar mechanisms.Coupling bar is arranged on rod piece both ends, and rod piece can rotate in the middle part of coupling bar, after different rod pieces are connected by coupling bar, is fixed in teaching aid main body by the coupling bar in rack, can demonstrate different parallel motion situations.Since the rod piece color of different length is different, teacher can easily explain when in use, and student can more clearly observe the motion conditions of each component of four-bar mechanism when in use.
Description
Technical field
The utility model is related to mechanical classroom teaching aid technical field, more particularly to a kind of parallel motion teaching aid.
Background technology
Planar linkage mechanism is the plane mechanism for forming each component revolute pair or prismatic pair connection.Simplest plane
Link mechanism is made of four components, abbreviation four-bar linkage.The four-bar linkage all formed with rotary pair claims
For four-bar linkage.It is the most basic form of four-bar linkage.
In four-bar mechanism, it is known as rack for fixing piece.The bar being connected with rack with rotary pair, referred to as frame linking
Bar.Referred to as connecting rod is not directly connected to rack.It can make the side link of circumferential rotation type, referred to as crank.It is only capable of in a certain angle swinging
Side link, referred to as rocking bar.For four-bar linkage, what rack and connecting rod were constantly present, therefore can be according to side link
It is crank or rocking bar, four-bar linkage is divided into three kinds of basic patterns：Crank and rocker mechanism, double-crank mechanism and double rocking lever
Mechanism.
It is typically that three kinds of typical structures are fabricated to independent religion respectively in existing kink four bar linkage correlation teaching aid
Tool, carry and using when have a degree of inconvenience.
Invention content
According to more than technical problem, the utility model provides a kind of parallel motion teaching aid, it is characterised in that including
Teaching aid main body, fixed column, rod piece, coupling bar, connecting hole, connecting pin, drawing hole, drawing board are uniformly set in the teaching aid main body
Fixed column is equipped with, connecting hole is provided in the fixed column, the fixed column is connected by coupling bar with rod piece, the coupling bar
Rod piece both ends are arranged on, the rod piece is connect by coupling bar with other rod pieces, and the coupling bar side is provided with connecting hole, institute
It states coupling bar opposite side and is provided with connecting pin, the teaching aid main body is connected with drawing board by fixed column, the drawing board back
Connecting pin is provided with, drawing hole is offered on the drawing board.
The coupling bar is connect with rod movable, and rod piece can rotate in the middle part of coupling bar.
Horizontal, vertical distance is unit distance between the fixed column.
The length of the rod piece is N times of unit distance, and N is positive integer.
The rod piece shares M kind length, each length has 2 rod pieces, and M is the positive integer more than or equal to 5.
The drawing board light sheet smooth for front.
The surface area of the drawing board is more than or equal to the surface area of teaching aid main body.
The beneficial effects of the utility model are：The utility model is simple in structure, cheap, easy to carry.This practicality is new
Type is attached using coupling bar between rod piece and rod piece, rod piece and teaching aid main body, due to be provided on coupling bar connecting hole and
Connecting pin, and coupling bar is made by plastic material, it is light wear-resisting, therefore can carry out repeatedly splicing between connecting hole and coupling bar with
Dismounting, forms different four-bar mechanisms, teacher and classmates is facilitated to use.Coupling bar is arranged on rod piece both ends, and rod piece can be around
It rotates in the middle part of coupling bar, after different rod pieces are connected by coupling bar, is fixed in teaching aid main body by the coupling bar in rack, it can
Demonstrate different parallel motion situations.Since the rod piece color of different length is different, teacher can facilitate when in use
Ground is explained, and student can more clearly observe the motion conditions of each component of four-bar mechanism when in use.Drawing back is set
There is connecting pin, connecting pin can be inserted into the connecting hole in teaching aid main body in fixed column, after placing paper in drawing plate surface, paint
Drawing hole is provided on chart board so that connecting pin passes through paper to be fixed in the fixed column exposed in drawing hole in rack, you can
The movement locus of double leval jib, facilitates student to understand the movement of four-bar mechanism under manually recorded lower different conditions.
Description of the drawings
Fig. 1 is the utility model structure front view.
Fig. 2 is the utility model structure top view.
Fig. 3 is rod connection structure schematic diagram.
Fig. 4 is connecting hole structure diagram.
Fig. 5 is connecting pin structure diagram.
Fig. 6 is drawing plate structure schematic diagram.
Fig. 7 is A portions structure diagram.
Each component label is as follows in attached drawing：Teaching aid main body -1；Fixed column -2；Rod piece -3；Rack -31；Crank -32；Rocking bar-
33；Connecting rod -34；Coupling bar -4；Connecting hole -41；Connecting pin -42；Drawing hole -5；Drawing board -6.
Specific embodiment
It is shown with reference to the accompanying drawings, the utility model is further described：
Embodiment 1
The utility model provides a kind of parallel motion teaching aid, including teaching aid main body 1, fixed column 2, rod piece 3, rack
31st, crank 32, rocking bar 33, connecting rod 34, coupling bar 4, connecting hole 41, connecting pin 42, drawing hole 5, drawing board 6, in teaching aid main body 1
Fixed column 2 is evenly arranged with, connecting hole 41 is provided in fixed column 2, fixed column 2 is connected by coupling bar 4 and rod piece 3, connection
Bolt 4 is arranged on 3 both ends of rod piece, and rod piece 3 is connect by coupling bar 4 with other rod pieces 3, and 4 side of coupling bar is provided with connecting hole 41,
4 opposite side of coupling bar is provided with connecting pin 42, and teaching aid main body 1 and drawing board 6 are connected by fixed column 2, the setting of 6 back of drawing board
There is connecting pin 42, drawing hole 5 is offered on drawing board 6.Coupling bar 4 is flexibly connected with rod piece 3, and rod piece 3 can be around in the middle part of coupling bar 4
Rotation.Horizontal, vertical distance is unit distance between fixed column 2.The length of rod piece 3 is N times of unit distance, and N is just whole
Number.Rod piece 3 shares M kind length, each length has 2 rod pieces, and M is the positive integer more than or equal to 5.Drawing board 6 is smooth for front
Smooth light sheet.The surface area of drawing board 6 is more than or equal to the surface area of teaching aid main body 1.
Embodiment 2
Religion is inserted into 31 both ends of rack by the utility model by the connecting pin 42 on coupling bar 4 first when specifically used
Have in the connecting hole 41 in the fixed column 2 on 1 surface of main body, the coupling bar 4 of 32 one end of crank with 31 one end of rack is connected, will be shaken
The coupling bar 4 of 33 one end of bar connects with 31 one end of rack, by the both ends of connecting rod 34 respectively with the other end of crank 32, rocking bar 33
The other end is connected by coupling bar 4 to get to a crank and rocker mechanism.Teacher's manual crank 32, four-bar mechanism is opened
Begin to move, 3 color of rod piece of different length is different, and the explanation of teacher and the observation of student is facilitated to understand.It will be on coupling bar 4
Connecting pin 42 extracts connecting hole 41, replaces the rod piece 3 of different length, can make up double-crank mechanism and double rocker mechanism, convenient
Teaching uses.
Embodiment 3
To obtain the movement locus of four-bar mechanism, the connecting pin 42 at 6 back of drawing board is inserted into 1 table of teaching aid main body first
In connecting hole 41 in the fixed column 2 in face, so that rows of fixed column 2 is exposed, user takes a blank sheet of paper in drawing hole 5 at this time
6 surface of drawing board is placed on, the connecting pin 42 on 31 both ends coupling bar 4 of rack is made to penetrate blank sheet of paper, is inserted into what is exposed in drawing hole 5
In mounting hole 41 in fixed column 2, the coupling bar 4 of 32 one end of crank is connected with 31 one end of rack, by the company of 33 one end of rocking bar
It connects bolt 4 to connect with 31 one end of rack, the both ends of connecting rod 34 is passed through into company with the other end of the other end of crank 32, rocking bar 33 respectively
Bolt 4 is connect to connect to get to a crank and rocker mechanism.Teacher's manual crank 32, four-bar mechanism setting in motion, exists manually
The complete cycle movement locus of crank 32 and the pendulum motion track of rocking bar 33 are write down on blank sheet of paper, is deepened convenient for student to four-bar mechanism
The understanding of movement.The movement locus of double-crank mechanism and double rocker mechanism change 3 length of rod piece can obtain.
The above is only the preferred embodiment of the utility model, it is noted that for the general of the art
For logical technical staff, under the premise of the utility model principle is not departed from, several improvement can also be made, these, which are improved, also should
It is considered as the scope of protection of the utility model.
Claims (7)
1. a kind of parallel motion teaching aid, it is characterised in that including teaching aid main body, fixed column, rod piece, coupling bar, connection
Hole, connecting pin, drawing hole, drawing board are evenly arranged with fixed column in the teaching aid main body, connection are provided in the fixed column
Hole, the fixed column are connected by coupling bar with rod piece, and the coupling bar is arranged on rod piece both ends, and the rod piece passes through coupling bar
It is connect with other rod pieces, the coupling bar side is provided with connecting hole, and the coupling bar opposite side is provided with connecting pin, the religion
Tool main body is connected with drawing board by fixed column, and the drawing board back is provided with connecting pin, offers and paints on the drawing board
Figure hole.
2. a kind of parallel motion teaching aid described in accordance with the claim 1, it is characterised in that the coupling bar is lived with rod piece
Dynamic connection, rod piece can rotate in the middle part of coupling bar.
3. a kind of parallel motion teaching aid described in accordance with the claim 1, it is characterised in that horizontal between the fixed column,
Vertical distance is unit distance.
4. a kind of parallel motion teaching aid described in accordance with the claim 1, it is characterised in that the length of the rod piece is single
N times of position distance, N is positive integer.
5. a kind of parallel motion teaching aid described in accordance with the claim 1, it is characterised in that it is long that the rod piece shares M kinds
Degree, each length have 2 rod pieces, and M is the positive integer more than or equal to 5.
6. a kind of parallel motion teaching aid described in accordance with the claim 1, it is characterised in that the drawing board is front lighting
Sliding smooth light sheet.
A kind of 7. parallel motion teaching aid described in accordance with the claim 1, it is characterised in that the surface face of the drawing board
Product is more than or equal to the surface area of teaching aid main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086874.9U CN207473937U (en) | 2017-08-29 | 2017-08-29 | Parallel motion teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086874.9U CN207473937U (en) | 2017-08-29 | 2017-08-29 | Parallel motion teaching aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207473937U true CN207473937U (en) | 2018-06-08 |
Family
ID=62268691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721086874.9U Expired - Fee Related CN207473937U (en) | 2017-08-29 | 2017-08-29 | Parallel motion teaching aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207473937U (en) |
-
2017
- 2017-08-29 CN CN201721086874.9U patent/CN207473937U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180608 Termination date: 20190829 |