CN204791767U - Four connecting rods teaching presentation device - Google Patents
Four connecting rods teaching presentation device Download PDFInfo
- Publication number
- CN204791767U CN204791767U CN201520551520.1U CN201520551520U CN204791767U CN 204791767 U CN204791767 U CN 204791767U CN 201520551520 U CN201520551520 U CN 201520551520U CN 204791767 U CN204791767 U CN 204791767U
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- base
- support
- leval jib
- double leval
- 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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Abstract
The utility model discloses a four connecting rods teaching presentation device, including base, support, link means and connecting rod roll adjustment mechanism, wherein, the support is fixed on the base, and the link means is installed in the bearing bore at support top, and connecting rod roll adjustment mechanism installs on the base and be located the back of support, the starting point of connecting rod roll adjustment mechanism and the integral multiple of the centre of a circle of support top bearing at a distance of 10mm, and the base upper surface has a slot, and the slot is located the link means under. The developments demonstration of three kinds of forms of four connecting rods can be realized in proper order to this device, makes the various motion type surveyability of four connecting rods, has fully driven the enthusiasm and the initiative of student's study, has improved student's hands -on ability, and the student can combine together what studied knowwhy and practice, reaches the effect of skilled grasp knowledge on the abundant basis of understanding.
Description
Technical field
The utility model relates to teaching aid field, is specifically related to a kind of double leval jib teaching demonstration device.
Background technology
Along with the development of educational undertaking, classroom instruction apparatus kind becomes increasingly abundant and trends towards variation.But a lot of teaching aid is only static model, can only can not do dynamic demonstration in teaching process for observation of students, make student can not open-and-shut understanding and memory to knowledge, interest and the enthusiasm of Students ' Learning can not be caused like this; And in double leval jib education activities, complicated type of sports and various mode of motion make student be not easy to understand and memory.
Utility model content
The utility model is in order to solve the problem, propose a kind of double leval jib teaching demonstration device, this device can realize the dynamic demonstration of three kinds of forms of double leval jib successively, make the various type of sports of double leval jib very clear, enthusiasm and the initiative of Students ' Learning are fully driven, improve the manipulative ability of student, learned knowwhy and practice can combine by student, and the basis fully understood reaches the skilled effect grasping knowledge.
To achieve these goals, the utility model adopts following technical scheme:
A kind of double leval jib teaching demonstration device, comprise base, support, linkage and connecting rod distance adjustor, wherein, support is fixed on base, linkage is arranged in the brearing bore of cradle top, and connecting rod distance adjustor to be arranged on base and to be positioned at after support, and the starting point of connecting rod distance adjustor and the center of circle of cradle top bearing are at a distance of the integral multiple of 10mm, base upper surface has a slot, and slot is positioned at immediately below linkage.
Described connecting rod distance adjustor comprises rail brackets, guide rail and graduated scale, and a rail brackets is installed at the two ends of guide rail respectively, and graduated scale to be arranged on rail brackets and to be positioned at above guide rail, and two rail bracketses are arranged on base.
Described linkage comprises rocking handle, rotating shaft, short connecting rod, connecting rod, long connecting rod and locking sliding block; One end of rocking handle and short connecting rod is arranged on the two ends of rotating shaft respectively, rotating shaft is arranged in the dead eye of cradle top, the other end of short connecting rod and one end of connecting rod are with being hinged, the other end of connecting rod and one end of long connecting rod are with being hinged, the other end of long connecting rod and locking sliding block are with being hinged, and locking sliding block is arranged on the guide rail of connecting rod distance adjustor.
The starting point of described connecting rod distance adjustor and the center of circle of cradle top bearing are at a distance of 10mm.
The start index of described graduated scale is 10mm, and 10mm scale overlaps with the starting point of connecting rod distance adjustor.
Described rocking handle and short connecting rod are 180 ° of installations.
Described connecting hinge one end can be locked, other end proper articulation, and being hinged can 360 ° of rotation.
The beneficial effects of the utility model are:
(1) this apparatus structure is simple, low cost of manufacture, easily realizes wide scope and popularizes;
(2) this device is easy to operate, without the need to providing power system in addition;
(3) this device mode of motion is flexible, covers three kinds of basic exercise modes of four-bar mechanism;
(4) this device adopts hand as driving force, can control motion speed at any time;
Accompanying drawing explanation
Fig. 1 is one-piece construction figure of the present utility model;
Wherein, 1, base, 2, support, 3-1, rocking handle, 3-2, short connecting rod, 3-3, connecting rod, 3-4, long connecting rod, 3-5, locking sliding block, 4-1, rail brackets, 4-2, guide rail, 4-3, graduated scale.
Embodiment:
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
A kind of double leval jib teaching demonstration device, comprise base, support, linkage and connecting rod distance adjustor, wherein, support is fixed on base, linkage is arranged in the brearing bore of cradle top, and connecting rod distance adjustor to be arranged on base and to be positioned at after support, and the starting point of connecting rod distance adjustor and the center of circle of cradle top bearing are at a distance of the integral multiple of 10mm, preferably, the starting point of connecting rod distance adjustor and the center of circle of cradle top bearing are at a distance of 10mm.Base upper surface has a slot, and slot is positioned at immediately below linkage.
Described connecting rod distance adjustor comprises rail brackets, guide rail and graduated scale, a rail brackets is installed at the two ends of guide rail respectively, graduated scale to be arranged on rail brackets and to be positioned at above guide rail, the start index of graduated scale is 10mm, and 10mm scale overlaps with the starting point of connecting rod distance adjustor.Two rail bracketses are arranged on base.
Described linkage comprises rocking handle, rotating shaft, short connecting rod, connecting rod, long connecting rod and locking sliding block; One end of rocking handle and short connecting rod is arranged on the two ends of rotating shaft respectively, and rocking handle and short connecting rod are 180 ° of installations.Rotating shaft is arranged in the dead eye of cradle top, and the other end of short connecting rod and one end of connecting rod are with being hinged, and the other end of connecting rod and one end of long connecting rod are with being hinged.The other end of long connecting rod and locking sliding block are with being hinged, and described connecting hinge one end can be locked, other end proper articulation, and being hinged can 360 ° of rotation.Locking sliding block is arranged on the guide rail of connecting rod distance adjustor, and locking sliding block is provided with tuning drive gear.
The short connecting rod length of described linkage is 80mm, length of connecting rod is 150mm, long connecting rod length is 120mm, when needs carry out teaching demonstration, first regulates the position of locking sliding block.Following three kinds of forms of motion can be divided into according to its diverse location:
(1) when slide block scale length is: during 0< slide block scale≤50mm, this device is double-crank mechanism.
(2) when slide block scale length is: during 110mm< slide block scale≤190mm, this device is crank and rocker mechanism.
(3) when slide block scale length is: during 190mm< slide block scale≤350mm, this device is double rocker mechanism.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (7)
1. a double leval jib teaching demonstration device, it is characterized in that: comprise base, support, linkage and connecting rod distance adjustor, wherein, support is fixed on base, linkage is arranged in the brearing bore of cradle top, and connecting rod distance adjustor to be arranged on base and to be positioned at after support, and the starting point of connecting rod distance adjustor and the center of circle of cradle top bearing are at a distance of the integral multiple of 10mm, base upper surface has a slot, and slot is positioned at immediately below linkage.
2. a kind of double leval jib teaching demonstration device as claimed in claim 1, it is characterized in that: described connecting rod distance adjustor comprises rail brackets, guide rail and graduated scale, a rail brackets is installed at the two ends of guide rail respectively, graduated scale to be arranged on rail brackets and to be positioned at above guide rail, and two rail bracketses are arranged on base.
3. a kind of double leval jib teaching demonstration device as claimed in claim 1, is characterized in that: described linkage comprises rocking handle, rotating shaft, short connecting rod, connecting rod, long connecting rod and locking sliding block; One end of rocking handle and short connecting rod is arranged on the two ends of rotating shaft respectively, rotating shaft is arranged in the dead eye of cradle top, the other end of short connecting rod and one end of connecting rod are with being hinged, the other end of connecting rod and one end of long connecting rod are with being hinged, the other end of long connecting rod and locking sliding block are with being hinged, and locking sliding block is arranged on the guide rail of connecting rod distance adjustor.
4. a kind of double leval jib teaching demonstration device as claimed in claim 1, is characterized in that: the starting point of described connecting rod distance adjustor and the center of circle of cradle top bearing are at a distance of 10mm.
5. a kind of double leval jib teaching demonstration device as claimed in claim 2, is characterized in that: the start index of described graduated scale is 10mm, and 10mm scale overlaps with the starting point of connecting rod distance adjustor.
6. a kind of double leval jib teaching demonstration device as claimed in claim 3, is characterized in that: described rocking handle and short connecting rod are 180 ° of installations.
7. a kind of double leval jib teaching demonstration device as claimed in claim 3, is characterized in that: described in be hinged one end and can lock, other end proper articulation, being hinged can 360 ° of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520551520.1U CN204791767U (en) | 2015-07-27 | 2015-07-27 | Four connecting rods teaching presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520551520.1U CN204791767U (en) | 2015-07-27 | 2015-07-27 | Four connecting rods teaching presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204791767U true CN204791767U (en) | 2015-11-18 |
Family
ID=54531770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520551520.1U Expired - Fee Related CN204791767U (en) | 2015-07-27 | 2015-07-27 | Four connecting rods teaching presentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204791767U (en) |
-
2015
- 2015-07-27 CN CN201520551520.1U patent/CN204791767U/en not_active Expired - Fee Related
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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: 20151118 Termination date: 20160727 |