CN207233287U - A kind of four-bar linkage demonstration teaching aid model - Google Patents
A kind of four-bar linkage demonstration teaching aid model Download PDFInfo
- Publication number
- CN207233287U CN207233287U CN201720983172.4U CN201720983172U CN207233287U CN 207233287 U CN207233287 U CN 207233287U CN 201720983172 U CN201720983172 U CN 201720983172U CN 207233287 U CN207233287 U CN 207233287U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- rod component
- bar
- motion bar
- loop bar
- 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.)
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Abstract
The utility model discloses a kind of four-bar linkage demonstration teaching aid model,Including pedestal,Support post,First connecting rod component,Second connecting rod component and third connecting rod component,Support post includes a vertical columns and active column,First connecting rod component,Second connecting rod component and third connecting rod component include a loop bar and a motion bar,Loop bar on first connecting rod component and third connecting rod component is articulated and connected with the top of vertical columns and active column respectively,Loop bar end and motion bar end on second connecting rod component are articulated and connected with the motion bar end on first connecting rod component and third connecting rod component respectively,The top of support post and the end of motion bar are respectively arranged with sets of holes,The hinged shaft end of loop bar end is fixedly installed a rocking handle that first connecting rod component can be controlled to rotate on first connecting rod component,The utility model visualizes the teaching of " four-bar linkage " content,Student's study is allowed to feel directly perceived,It is interesting.
Description
Technical field
It the utility model is related to teaching aid technical field, and in particular to a kind of four-bar linkage demonstration teaching aid model.
Background technology
Existing four-bar mechanism teaching aid model has crank and rocker mechanism teaching aid model, double-crank mechanism teaching aid model, double rocking lever
The types such as mechanism teaching aid model, four pole lengths of existing four-bar mechanism teaching aid model are fixed, and are single demonstrating model (crank
Rocker device teaching aid model, double-crank mechanism teaching aid model, double rocker mechanism teaching aid model),《Mechanical Fundamentals》Course " hinge
, it is necessary to use multiple teaching aid models in the teaching demonstration teaching of four-bar mechanism " content, teacher carries inconvenient.In addition also not
Can ocular demonstration four-bar linkage " condition existing for crank ".
Utility model content
(1) technical problems to be solved
In order to overcome the shortage of prior art, it is proposed that a kind of four-bar linkage demonstration teaching aid model, makes " hinge four-bar machine
The teaching visualization of structure " content, allows student's study to feel directly perceived, interesting.
(2) technical solution
The utility model is achieved through the following technical solutions：The utility model proposes a kind of demonstration of four-bar linkage to teach
Have model, including pedestal, support post, first connecting rod component, second connecting rod component and third connecting rod component, the support is vertical
Column includes one and vertical is fixedly connected on the vertical columns on pedestal top and Vertical movements are connected to active column on pedestal, institute
First connecting rod component, second connecting rod component and third connecting rod component is stated to be intercalated in loop bar including a loop bar and an activity
Motion bar, loop bar on the first connecting rod component and third connecting rod component respectively with vertical columns and active column
Top is articulated and connected, the loop bar end and motion bar end on the second connecting rod component respectively with first connecting rod component and
Motion bar end articulated connection on third connecting rod component, the top of the support post and the end of motion bar are set respectively
There are sets of holes, the end profile of the loop bar, which is fixedly installed one, can be nested in support post and motion bar end sets of holes
Articulated shaft, the motion bar on the second connecting rod component are articulated and connected with the motion bar on third connecting rod component by a short axle,
The hinged shaft end of loop bar end is fixedly installed a rocking handle that first connecting rod component can be controlled to rotate on first connecting rod component.
Further, a long lumbar hole is provided with the pedestal, one and active column bottom are provided with the long lumbar hole
The clamping screw of connection.
Further, long lumbar hole length direction is corresponded on the pedestal and is provided with adjusting scale marker.
Further, the top of the loop bar is provided with flat hole, and the inside both sides of flat hole are symmetrically arranged with wave
Some arc grooves of shape, the motion bar can generally be intercalated in the flat in flat hole and in the both sides of motion bar
Be symmetrically arranged with least one semi-circular projection, the semi-circular projection can inlay card in arc groove, the top of motion bar is set
Raised in push-and-pull, the top of loop bar is provided with one and runs through kidney slot in flat hole along its length, and the push-and-pull is raised
It can be slided along kidney slot length direction.
Further, the inner side of the semi-circular projection and the both sides of push-and-pull protrusion are respectively arranged with weakening strength groove.
Further, kidney slot length direction is corresponded on the loop bar and is provided with adjusting scale marker.
(3) beneficial effect
The utility model has the advantages that relative to the prior art：
A kind of four-bar linkage demonstration teaching aid model that the utility model is mentioned, it can be to each bar of articulated four pole mechanism
Part length is adjusted, so as to by a single model realization to crank rocker machine common in four-bar linkage
The demonstration of structure, double-crank mechanism, double rocker mechanism, it is often more important that condition existing for four-bar linkage crank can be demonstrated, sentenced
Other class of establishment.
Brief description of the drawings
Fig. 1 is the utility model structure diagram.
Fig. 2 is the first/bis-/three-link component structure diagram.
Fig. 3 is loop bar structure schematic diagram.
Fig. 4 is motion bar structure diagram.
1- pedestals；2- support posts；3- first connecting rod components；4- second connecting rod components；5- third connecting rod components；6- covers
Bar；7- motion bars；8- rocking handles；11- long lumbar holes；21- vertical columns；22- active columns；61- articulated shafts；62- flat holes；63-
Arc groove；64- kidney slots；71- semi-circular projections；72- push-and-pulls are raised；73- weakening strength grooves.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining
The utility model, is not used to limit the utility model.
A kind of four-bar linkage demonstration teaching aid model as shown in Figure 1 to 4, including pedestal 1, support post 2, first
Link assembly 3, second connecting rod component 4 and third connecting rod component 5, the support post 2 are vertically fixedly connected on base including one
The vertical columns 21 and Vertical movements on 1 top of seat are connected to active column 22 on pedestal 1, the first connecting rod component 3, the
Two link assemblies 4 and third connecting rod component 5 are intercalated in the motion bar 7 in loop bar 6, institute including a loop bar 6 and an activity
State loop bar 6 on first connecting rod component 3 and third connecting rod component 5 top with vertical columns 21 and active column 22 respectively
Articulated connection, 6 end of loop bar and 7 end of motion bar on the second connecting rod component 4 respectively with first connecting rod component 3 and
7 end of motion bar articulated connection on third connecting rod component 5, the top of the support post 2 and the end difference of motion bar 7
Sets of holes are provided with, the end profile of the loop bar 6, which is fixedly installed one, can be nested in 7 end of support post 2 and motion bar
Articulated shaft 61 in sets of holes, the motion bar 7 on the second connecting rod component 3 pass through one with the motion bar 7 on third connecting rod component 5
Short axle is articulated and connected, and 61 end of articulated shaft of 6 end of loop bar, which is fixedly installed one, on first connecting rod component 3 can control the first company
The rocking handle 8 that bar assembly 3 rotates.
Wherein, a long lumbar hole 11 is provided with the pedestal 1, one and 22 bottom of active column are provided with the long lumbar hole 11
The clamping screw of portion's connection；11 length direction of long lumbar hole is corresponded on the pedestal 1 and is provided with adjusting scale marker；The loop bar 6
Top be provided with flat hole 62, the inside both sides of flat hole 62 are symmetrically arranged with some arc grooves 63 of undulate shape,
Flat that the motion bar 7 can be generally intercalated in flat hole 62 and it is symmetrically arranged with least in the both sides of motion bar 7
One semi-circular projection 71, the semi-circular projection 71 can inlay card in arc groove 63, it is convex that the top of motion bar 7 is arranged at push-and-pull
Play 72, the top of loop bar 6 is provided with one and runs through kidney slot 64 in flat hole 62, the push-and-pull protrusion 72 along its length
It can be slided along 64 length direction of kidney slot；The inner side of the semi-circular projection 71 and the both sides of push-and-pull protrusion 72 are respectively arranged with
Weakening strength groove 73；64 length direction of kidney slot is corresponded on the loop bar 6 and is provided with adjusting scale marker.
A kind of four-bar linkage demonstration teaching aid model that the utility model is mentioned, wherein being stood with vertical columns 21 with activity
Fixed link of the mutual line in the top of column 22 as four-bar linkage bottom, connects in conjunction with first connecting rod component 3, second
Four-bar linkage is integrally formed in bar assembly 4 and third connecting rod component 5.
In specific teaching demonstration, it is usually required mainly for demonstration double-crank mechanism, double rocker mechanism and crank and rocker mechanism this
Three kinds of mechanisms, are specifically：
When most stock and most quarter butt sum of the two are less than or equal to the sum of length of other two bars in adjustment four-bar mechanism；
1), by unscrew be located at 22 bottommost of active column clamping screw, then adjust active column 22 so that active column 22 away from
The distance between vertical columns 21 are less than the length of first connecting rod component 3, second connecting rod component 4 and third connecting rod component 5, this
When shaking rocking handle 8, whole mechanism is double-crank mechanism；2), by the motion bar 7 on second connecting rod component 4 towards its loop bar 6
Interior promotion, since the inner side of semi-circular projection 71 is provided with weakening strength groove 73, thus when promoting, semi-circular projection 71 is towards interior
Side is recessed, and when stopping promoting, 71 inlay card of semi-circular projection is in the arc groove 63 of the inner side of loop bar 6, until second connecting rod component 4
For most quarter butt when, whole mechanism is double rocker mechanism at this time；3) it is, similar with above-mentioned steps, can be by first connecting rod component 3 or the
Three-link component 5 is adjusted to most quarter butt, and whole mechanism is crank and rocker mechanism at this time.
In addition the length of other two bars can also be more than by adjusting most stock in four-bar mechanism and most quarter butt sum of the two
The sum of degree, is also double rocker mechanism at this time.
Embodiment described above is only that the preferred embodiment of the utility model is described, not to this practicality
New spirit and scope are defined.Without departing from the design concept of the present utility model, ordinary people in the field couple
The all variations and modifications that the technical solution of the utility model is made, should fall within the protection scope of the present utility model, this reality
With new claimed technology contents, all record in detail in the claims.
Claims (6)
- A kind of 1. four-bar linkage demonstration teaching aid model, it is characterised in that：Connect including pedestal (1), support post (2), first Bar assembly (3), second connecting rod component (4) and third connecting rod component (5), the support post (2) include a vertical fixed company It is connected to the vertical columns (21) on pedestal (1) top and Vertical movements is connected to active column (22) on pedestal (1), described One link assembly (3), second connecting rod component (4) and third connecting rod component (5) include a loop bar (6) and an activity intercalation In the loop bar (6) on the motion bar (7) in loop bar (6), the first connecting rod component (3) and third connecting rod component (5) respectively It is articulated and connected with the top of vertical columns (21) and active column (22), loop bar (6) end on the second connecting rod component (4) End and motion bar (7) end respectively with motion bar (7) end on first connecting rod component (3) and third connecting rod component (5) Articulated connection, the top of the support post (2) and the end of motion bar (7) are respectively arranged with sets of holes, the loop bar (6) End profile is fixedly installed an articulated shaft (61) that can be nested in support post (2) and motion bar (7) end sets of holes, Motion bar (7) on the second connecting rod component (3) is hinged with the motion bar (7) on third connecting rod component (5) by a short axle Connect, articulated shaft (61) end of loop bar (6) end, which is fixedly installed one, on first connecting rod component (3) can control first connecting rod The rocking handle (8) that component (3) rotates.
- A kind of 2. four-bar linkage demonstration teaching aid model according to claim 1, it is characterised in that：The pedestal (1) On be provided with a long lumbar hole (11), is provided with a locking screw being connected with active column (22) bottom in the long lumbar hole (11) Bolt.
- A kind of 3. four-bar linkage demonstration teaching aid model according to claim 2, it is characterised in that：The pedestal (1) Upper corresponding long lumbar hole (11) length direction is provided with adjusting scale marker.
- A kind of 4. four-bar linkage demonstration teaching aid model according to claim 1, it is characterised in that：The loop bar (6) Top be provided with flat hole (62), the inside both sides of flat hole (62) are symmetrically arranged with some arc grooves of undulate shape (63), the motion bar (7) can generally be intercalated in flat in flat hole (62) and symmetrical in the both sides of motion bar (7) Be provided with least one semi-circular projection (71), the semi-circular projection (71) can inlay card in arc groove (63), motion bar (7) Top be arranged at that push-and-pull is raised (72), the top of loop bar (6) is provided with one and runs through in flat hole (62) along its length Kidney slot (64), the push-and-pull raised (72) can slide along kidney slot (64) length direction.
- A kind of 5. four-bar linkage demonstration teaching aid model according to claim 4, it is characterised in that：The semi-circular projection (71) inner side and the both sides of push-and-pull raised (72) is respectively arranged with weakening strength groove (73).
- A kind of 6. four-bar linkage demonstration teaching aid model according to claim 4, it is characterised in that：The loop bar (6) Upper corresponding kidney slot (64) length direction is provided with adjusting scale marker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720983172.4U CN207233287U (en) | 2017-08-08 | 2017-08-08 | A kind of four-bar linkage demonstration teaching aid model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720983172.4U CN207233287U (en) | 2017-08-08 | 2017-08-08 | A kind of four-bar linkage demonstration teaching aid model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207233287U true CN207233287U (en) | 2018-04-13 |
Family
ID=61856619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720983172.4U Expired - Fee Related CN207233287U (en) | 2017-08-08 | 2017-08-08 | A kind of four-bar linkage demonstration teaching aid model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207233287U (en) |
-
2017
- 2017-08-08 CN CN201720983172.4U patent/CN207233287U/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 |
Granted publication date: 20180413 Termination date: 20190808 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |