CN204406819U - The multi-functional mechanics dolly of Middle School Physics - Google Patents
The multi-functional mechanics dolly of Middle School Physics Download PDFInfo
- Publication number
- CN204406819U CN204406819U CN201520044012.4U CN201520044012U CN204406819U CN 204406819 U CN204406819 U CN 204406819U CN 201520044012 U CN201520044012 U CN 201520044012U CN 204406819 U CN204406819 U CN 204406819U
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- CN
- China
- Prior art keywords
- rubber bar
- power wheel
- pilot pin
- shaped axle
- screw shaped
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- Expired - Fee Related
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Abstract
The utility model discloses the multi-functional mechanics dolly of a kind of Middle School Physics, in the link that it comprises, be provided with power wheel and engaged wheel, in the central siphon hole that power wheel is provided with, be provided with speed stabilizing block and rubber bar pilot pin, the screw shaped axle spindle nose be provided with in follower shaft is connected with a cross bar difference flute profile with the speed stabilizing block be provided with in power wheel central siphon hole, rubber bar pilot pin and the screw shaped axle other end are located on another cross bar respectively, rubber bar pilot pin and be respectively equipped with rubber bar register pin and screw shaped axle register pin between screw shaped axle and corresponding lasso, the rubber bar one end be provided with in power wheel central siphon hole is connected on corresponding cross bar through the perforation of speed stabilizing block, the other end of rubber bar is fixed on rubber bar register pin through location keyhole, pilot pin register pin is provided with between rubber bar pilot pin and power wheel, power wheel and engaged wheel are provided with thin plastic wire.The utility model has without the need to external force traction, easily observes direction, easy and simple to handle, the advantage that experimental error is little.
Description
Technical field
The utility model relates to physics teaching dolly, particularly relates to the multi-functional mechanics dolly of Middle School Physics.
Background technology
For a long time, physics teaching in secondary school traditional mechanics dolly is generally simple and easyly have track and rail-free dolly, four wheels composition fixed by this little automobile-used simple and easy casing, although this mechanics dolly can meet mechanics teaching demand, but this mechanics dolly is due to without self power, needing external force traction when imparting knowledge to students, there is trouble so use, and the shortcoming that guiding student probes into direction teaching request cannot be realized.In variable force acting is probed in expansion and length velocity relation is imparted knowledge to students, the traditional mechanics dolly used is rail-free dolly, dolly needs the formation of rubber bar elastic force to be mutually acute angle two component tractions, in experimentation, rubber is recovering deformation moment completely, dolly has moment rebound phenomena, and this mechanics dolly then also exists the shortcoming that operation easier is large, experimental error is large.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art and provides a kind of without the need to external force traction, easily observes direction, easy and simple to handle, the multi-functional mechanics dolly of the Middle School Physics that experimental error is little.
The purpose of this utility model is achieved in that it comprises U-shaped link, power wheel and engaged wheel is respectively equipped with between two the cross bar both sides be provided with in U-shaped link, described power wheel and engaged wheel be respectively in establish the I-beam wheel of power wheel central siphon hole and follower shaft pore, be respectively equipped with speed stabilizing block and rubber bar pilot pin in described two ends, power wheel central siphon hole, screw shaped axle is provided with in follower shaft pore, described screw shaped axle is provided with spindle nose, described spindle nose and speed stabilizing block are respectively equipped with spindle nose groove and speed stabilizing block groove, speed stabilizing block groove is provided with the perforation of speed stabilizing block, described spindle nose groove and speed stabilizing block groove are provided with a cross bar, described rubber bar pilot pin and the screw shaped axle other end are located on another cross bar respectively, and rubber bar pilot pin and the screw shaped axle other end outside another cross bar on respectively cover have rubber bar pilot pin lasso and screw shaped axle sleeve circle, rubber bar register pin is provided with between rubber bar pilot pin and rubber bar pilot pin lasso, screw shaped axle register pin is provided with between screw shaped axle and screw shaped axle sleeve circle, the good rubber bar of a branch of elastic force is provided with in described power wheel central siphon hole, one end of rubber bar is connected on corresponding cross bar through the perforation of speed stabilizing block, the other end of rubber bar is fixed on rubber bar register pin through the location keyhole that rubber bar pilot pin is provided with, be provided with pilot pin register pin between the fixed block that rubber bar pilot pin and power wheel end are fixed with, fixed block is near between rubber bar pilot pin position power wheel and cross bar.
Described power wheel central siphon hole wall has observation panel.
Described power wheel and the wheel circumference of engaged wheel are provided with embedded hole uniformly, are equipped with thin plastic wire in all embedded holes.
The longitudinal rod be provided with in described U-shaped link is provided with paper tape clamping plate.
Owing to adopting technique scheme, the Middle School Physics that the utility model provides multi-functional mechanics dolly tool has the following advantages: without the need to external force traction, easily observe direction, easy and simple to handle, experimental error is little.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
The A-A of this Fig. 1 of Fig. 2 is to sectional structure schematic diagram.
In the drawings, 1, link, 2, power wheel, 3, engaged wheel, 4, power wheel central siphon hole, 5, follower shaft pore, 6, speed stabilizing block, 7, rubber bar pilot pin, 8, screw shaped axle, 9, rubber bar pilot pin lasso, 10, screw shaped axle sleeve circle, 11, rubber bar register pin, 12, screw shaped axle register pin, 13, rubber bar, 14, fixed block, 15, pilot pin register pin, 16, observation panel, 17, thin plastic wire, 18, paper tape clamping plate.
Embodiment
As shown in Figure 1 to Figure 2, the multi-functional mechanics dolly of the Middle School Physics that the utility model provides comprises U-shaped link 1, power wheel 2 and engaged wheel 3 is respectively equipped with between two the cross bar both sides be provided with in U-shaped link 1, described power wheel 2 and engaged wheel 3 be respectively in establish the I-beam wheel of power wheel central siphon hole 4 and follower shaft pore 5, be respectively equipped with speed stabilizing block 6 and rubber bar pilot pin 7 in described two ends, power wheel central siphon hole 4, screw shaped axle 8 is provided with in follower shaft pore 5, described screw shaped axle 8 is provided with spindle nose, described spindle nose and speed stabilizing block are respectively equipped with spindle nose groove and speed stabilizing block groove, speed stabilizing block groove is provided with the perforation of speed stabilizing block, described spindle nose groove and speed stabilizing block groove are provided with a cross bar, described rubber bar pilot pin 7 and screw shaped axle 8 other end are located on another cross bar respectively, and rubber bar pilot pin 7 and screw shaped axle 8 other end outside another cross bar on respectively cover have rubber bar pilot pin lasso 9 and screw shaped axle sleeve circle 10, rubber bar register pin 11 is provided with between rubber bar pilot pin 7 and rubber bar pilot pin lasso 9, screw shaped axle register pin 12 is provided with between screw shaped axle 8 and screw shaped axle sleeve circle 10, there is the good rubber bar 13 of a branch of elastic force in described power wheel central siphon hole 4, one end of rubber bar 13 is connected on corresponding cross bar through speed stabilizing block 6 perforation, the other end of rubber bar 13 is fixed on rubber bar register pin 11 through the location keyhole that rubber bar pilot pin 7 is provided with, be provided with pilot pin register pin 15 between the fixed block 14 that rubber bar pilot pin 7 and power wheel 2 end are fixed with, fixed block 14 is between the power wheel 2 and cross bar of rubber bar pilot pin 7 position.Described power wheel central siphon hole 4 wall has observation panel 16.Described power wheel 2 and the wheel circumference of engaged wheel 3 are provided with embedded hole uniformly, are equipped with thin plastic wire 17 in all embedded holes.The longitudinal rod be provided with in described U-shaped link 1 is provided with paper tape clamping plate 18.
During concrete use, in elastic force teaching, probe into or demonstrate object elastic force direction contrary with its deformation direction time, push down dolly speed stabilizing block, during rotational power wheel, the rubber bar generation elastic deformation be provided with in power wheel central siphon hole, puts the utility model on the table, moving of car, then can the direct vision physical phenomenon contrary with its deformation direction to object elastic force direction by observation panel.
In friction force teaching, probe into or demonstration friction direction time, push down dolly speed stabilizing block, during rotational power wheel, the rubber bar generation elastic deformation be provided with in power wheel central siphon hole, puts the utility model on the table, moving of car, respectively by the thin elastoplast silk bending direction observed on power wheel and engaged wheel and wheel body direction of relative movement, direction can be observed directly.
In variable force acting is probed in senior middle school's expansion and length velocity relation is imparted knowledge to students, existing probing in scheme uses this dolly, during the operation of balance friction force, extract register pin in rubber bar pilot pin and can excise dolly self power, after balance friction force, insert register pin in rubber bar pilot pin, push down speed stabilizing block, rotational power takes turns then rubber bar generation elastic deformation, and dolly self is then dynamic.Because this dolly self power also derives from elastic force, technically achieving being multiplied of power is exactly act on to be multiplied making a concerted effort on dolly, the power of achieving is multiplied, acting is also multiplied, in whole experimentation, there is not dolly have moment rebound phenomena, make this experimental implementation simply turn reduce experimental error, make the problem of this Experimental Research have more science.
Every experimental teaching needing mechanics dolly in senior middle school physics teaching, all can use this dolly, when such as probing into the teaching of speed of moving body, can directly utilize this dolly to drag paper tape, realize experiment purpose, eliminate the operation needing outer hanging hook weight etc. loaded down with trivial details with traditional dolly.
Claims (4)
1. the multi-functional mechanics dolly of Middle School Physics, it is characterized in that: it comprises U-shaped link, power wheel and engaged wheel is respectively equipped with between two the cross bar both sides be provided with in U-shaped link, described power wheel and engaged wheel be respectively in establish the I-beam wheel of power wheel central siphon hole and follower shaft pore, be respectively equipped with speed stabilizing block and rubber bar pilot pin in described two ends, power wheel central siphon hole, screw shaped axle is provided with in follower shaft pore, described screw shaped axle is provided with spindle nose, described spindle nose and speed stabilizing block are respectively equipped with spindle nose groove and speed stabilizing block groove, speed stabilizing block groove is provided with the perforation of speed stabilizing block, described spindle nose groove and speed stabilizing block groove are provided with a cross bar, described rubber bar pilot pin and the screw shaped axle other end are located on another cross bar respectively, and rubber bar pilot pin and the screw shaped axle other end outside another cross bar on respectively cover have rubber bar pilot pin lasso and screw shaped axle sleeve circle, rubber bar register pin is provided with between rubber bar pilot pin and rubber bar pilot pin lasso, screw shaped axle register pin is provided with between screw shaped axle and screw shaped axle sleeve circle, a branch of rubber bar is provided with in described power wheel central siphon hole, one end of rubber bar is connected on corresponding cross bar through the perforation of speed stabilizing block, the other end of rubber bar is fixed on rubber bar register pin through the location keyhole that rubber bar pilot pin is provided with, be provided with pilot pin register pin between the fixed block that rubber bar pilot pin and power wheel end are fixed with, fixed block is near between rubber bar pilot pin position power wheel and cross bar.
2. the multi-functional mechanics dolly of Middle School Physics according to claim 1, is characterized in that: described power wheel central siphon hole wall has observation panel.
3. the multi-functional mechanics dolly of Middle School Physics according to claim 1, is characterized in that: described power wheel and the wheel circumference of engaged wheel are provided with embedded hole uniformly, are equipped with thin plastic wire in all embedded holes.
4. the multi-functional mechanics dolly of Middle School Physics according to claim 1, is characterized in that: the longitudinal rod be provided with in described U-shaped link is provided with paper tape clamping plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044012.4U CN204406819U (en) | 2015-01-22 | 2015-01-22 | The multi-functional mechanics dolly of Middle School Physics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520044012.4U CN204406819U (en) | 2015-01-22 | 2015-01-22 | The multi-functional mechanics dolly of Middle School Physics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204406819U true CN204406819U (en) | 2015-06-17 |
Family
ID=53430660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520044012.4U Expired - Fee Related CN204406819U (en) | 2015-01-22 | 2015-01-22 | The multi-functional mechanics dolly of Middle School Physics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204406819U (en) |
-
2015
- 2015-01-22 CN CN201520044012.4U patent/CN204406819U/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 |
Granted publication date: 20150617 Termination date: 20210122 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |