CN206628156U - A kind of bicycle friction force direction demonstrating experiment device - Google Patents
A kind of bicycle friction force direction demonstrating experiment device Download PDFInfo
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- CN206628156U CN206628156U CN201720201095.2U CN201720201095U CN206628156U CN 206628156 U CN206628156 U CN 206628156U CN 201720201095 U CN201720201095 U CN 201720201095U CN 206628156 U CN206628156 U CN 206628156U
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- rack
- friction force
- connector
- experiment device
- force direction
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Abstract
A kind of bicycle friction force direction demonstrating experiment device is the utility model is related to, belongs to technical field of physical experiment.Its structure includes loading plate, front-wheel, trailing wheel, rack, gear, driving shaft and driven shaft, the loading plate is provided with rack support portion, the rack is meshed with the gear, the driving shaft and driven shaft be arranged in parallel and perpendicular with rack in same level, the gear is arranged on the middle part of driving shaft, and described driving shaft one end is fixed on trailing wheel；Plumbness is kept between the front wheels and rear wheels and loading plate, described driven shaft one end is fixed on front-wheel, and the driving shaft and driven shaft are installed on connector, and the outer circle periphery of the front wheels and rear wheels is evenly equipped with hairbrush.The advantages that the utility model can intuitively be observed the direction of frictional force by hairbrush, so as to more fully understand bicycle friction force direction, be undergone, sharpened understanding by direction demonstrating experiment device, and simple in construction, easy to operate.
Description
Technical field
A kind of direction demonstrating experiment device is the utility model is related to, more particularly, to a kind of bicycle friction power side
To demonstrating experiment device, belong to technical field of physical experiment.
Background technology
Bicycle, also known as bicycle or bicycle, its structure include handlebar, pedal, two size identical front-wheels 100, after
Wheel 200 and the chain that two front-wheels 100 and trailing wheel 200 are connected together, as shown in figure 1, trailing wheel 200 is driving wheel, front-wheel 100
It is driven pulley.
After people rides bicycle, when people's pedal-driven vehicle, the rotating shaft that is connected with pedal is passing through 200 turns of chain-driving trailing wheel
It is dynamic.At this moment, trailing wheel 200 has individual stiction backward in face of ground, i.e. the trailing wheel of bicycle has relative to ground to move backward
Trend, can also there be a stiction forward on ground to trailing wheel 200, and this power is exactly the power that Chinese herbaceous peony is entered；Front-wheel 100 is
Driven pulley, it is so can turn round, just because of the frictional force received backward.Specifically, the frictional force that trailing wheel 200 is subject to
It is that forward, the frictional force that front wheel 100 is subject to is backward, as shown in Figure 1.Therefore bicycle is using foot pedal
Power, forward and backward wheel is driven to carry out rolling traveling.And when people does not advance firmly to pedal, car advances by inertia, at this moment, preceding,
The frictional force that trailing wheel is subject to all is backward.
Simply above-mentioned means of interpretation, it is existing without intuitively experiment for the also relatively just more shallow student of physical knowledge
As lacking and undergoing, it is difficult to which the direction of the intuitive judgment frictional force, the best method of this difficult point of Gonna breakthrough is exactly by setting
Meter experiment, the motion principle analog demenstration according to bicycle are tested, so as to be undergone, sharpened understanding.
The content of the invention
In view of the foregoing, the purpose of this utility model is to overcome above-mentioned the shortcomings of the prior art, and provides one
Kind bicycle friction force direction demonstrating experiment device, the experimental provision can be according to the motion principle analog demenstration realities of bicycle
Test, so as to more fully understand bicycle friction force direction, and sharpen understanding.
In order to solve the above technical problems, what the technical solution of the utility model was realized in：
A kind of bicycle friction force direction demonstrating experiment device, including loading plate, front-wheel, trailing wheel, rack, gear, active
Axle and driven shaft, the loading plate are provided with rack support portion, and the rack is fixed in rack support portion, the rack and institute
State gear to be meshed, the driving shaft and driven shaft be arranged in parallel in same level and, the gear perpendicular with rack
Installed in the middle part of driving shaft, described driving shaft one end is fixed on trailing wheel, and its other end forms operating side；The front-wheel is with after
Plumbness is kept between wheel and loading plate, described driven shaft one end is fixed on front-wheel, and the driving shaft and driven shaft are equal
It is installed on a connection piece, and rotatably, the outer circle periphery of the front wheels and rear wheels is evenly equipped with hairbrush, the front wheels and rear wheels
Space is left between loading plate.
Preferably, the connector is hollow elongate structure, and the rack is placed in inside the connector, the tooth
Connector is stretched out in bar one end, and the connector is moved relative to the rack.
Preferably, the connector bottom is provided with the guide rail of elongated slot, and the rack is placed in the guide rail of connector elongated slot
It is interior, and rack moves in the guide rail of elongated slot.
Preferably, three truckles are distributed with along its length on the inside of the connector, and three truckles are same
On one horizontal plane, three truckles are placed in below rack to support rack.
Preferably, the other end of the driven shaft is provided with balance weight.
Preferably, the driving shaft passes through connector, and fixed cover is arranged with driving shaft, and the fixed cover is fixed on
On connector.
Preferably, the operating side of the driving shaft, which is provided with, is easy to hand dynamic hand grip portion.
Preferably, the top of the connector is provided with open slot.
Preferably, the rack support portion is three uniform vertical rods, and three vertical rods are on the same line, and all fixed
On loading plate.
Preferably, the movement locus of the front wheels and rear wheels is on the same line.
The beneficial effects of the utility model are：The utility model by trailing wheel and front-wheel be separately mounted to driving shaft and
On driven shaft, driving shaft is driven rear wheel, and drive front-wheel to rotate together by connector, pass through front wheels and rear wheels
The direction of hairbrush on periphery can intuitively observe the direction of frictional force, so as to more fully understand bicycle friction force direction, obtain
Must undergo, sharpen understanding, and it is simple in construction, easy to operate the advantages that.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of specification, and in order to allow above-mentioned purpose of the present utility model, feature and advantage
It can become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Brief description of the drawings
Fig. 1 is that bicycle friction force direction shows structural representation.
Fig. 2 is the utility model bicycle friction force direction demonstrating experiment device structural representation.
After Fig. 3 is the utility model bicycle friction force direction demonstrating experiment device trailing wheel and front-wheel one segment distance of movement
Structural representation.
Fig. 4 is the utility model bicycle friction force direction demonstrating experiment device another kind example structure schematic diagram.
Fig. 5 is another angled arrangement schematic diagram of the utility model bicycle friction force direction demonstrating experiment device.
Fig. 6 is that the utility model removes the structural representation after connector top and trailing wheel, front-wheel.
Label declaration in figure：1- loading plates；2- connectors；3- front-wheels；4- trailing wheels；5- racks；6- gears；7- driving shafts；
8- driven shafts；9- operating sides；10- rack supports portion；11- balance weights；12- fixed covers；13- hairbrush；14- truckles；15- is open
Groove.
Embodiment：
Further to illustrate that the utility model is to reach the technological means and effect that predetermined purpose taken, below in conjunction with
Accompanying drawing and preferred embodiment, to according to the utility model proposes a kind of bicycle friction force direction demonstrating experiment device it is specific
Embodiment, structure, feature and its effect, describe in detail as follows.
As shown in Fig. 2 a kind of bicycle friction force direction demonstrating experiment device of the utility model, including loading plate 1, connection
Part 2, front-wheel 3, trailing wheel 4, rack 5, gear 6, driving shaft 7 and driven shaft 8.
The loading plate 1 is planar structure, and its material can use plank, glued board, plastic plate or other materials, its
Size can be made smaller, can loading plate 1 is horizontal positioned on the table when doing lecture experiment, or take up and use hand rest
It is flat, so as to observation of students demonstrating effect.
The loading plate 1 is provided with rack support portion 10, and the rack support portion 10 is three uniform vertical rods, and three
Vertical rod is on the same line, and highly consistent, and three vertical rods are all fixed on loading plate 1, the rack support portion 10
Material can use plank, plastics either other materials.
The rack 5 is fixed in rack support portion 10, so that rack support portion 10 plays a supportive role to rack 5, i.e.,
Rack support portion 10 and the position of rack 5 are fixed.
As shown in figure 3, being installed on connector 2 above rack support portion 10, the connector 2 is hollow elongated shape knot
Structure, the bottom of connector 2 are provided with the guide rail of elongated slot, and the rack 5 is placed in the guide rail of connector elongated slot, the rack
5 one end are stretched out out of connector 2, and rack 5 moves in the guide rail of elongated slot, i.e., connector 2 can occur relative to rack 5
It is mobile.Specifically, the rack 5 is fixed structure, and connector 2 moves together with front-wheel 3 and trailing wheel 4, so that connector 2
It is moved with rack 5.
The top of the connector 2 is provided with open slot 15, and the open slot 15 can partly be open above connector 2,
Can also above connector 2 all hatch frames, i.e., be opening portion above connector 2, so as to observe rack 5
With the working condition of gear 6, as shown in Figure 4.
The driving shaft 7 and driven shaft 8 are installed on connector 2, and rotatably, specifically, are limited by connector 2
The movement of driving shaft 7 and driven shaft 8 in other directions has been made, driving shaft 7 and driven shaft 8 is rotated.The driving shaft 7
It is be arranged in parallel with driven shaft 8 in same level and perpendicular with rack 5, the gear 6 is arranged on the middle part of driving shaft 7,
The rack 5 is intermeshed with the gear 6.The gear 6 is fixed on driving shaft 7, as shown in Figure 6.
Described one end of driving shaft 7 is fixed on trailing wheel 4, and its other end forms operating side 9, the trailing wheel 4 and loading plate 1 it
Between keep plumbness；The operating side 9, which is provided with, is easy to hand dynamic hand grip portion, is shaken with hands with facilitating, so that driving shaft 7
Rotated, the hand grip portion can be L-shaped structure, be either zig-zag type or be other structures, as long as conveniently shaking with hands i.e.
Can.
Fixed cover 12 is arranged with the driving shaft 7, the fixed cover 12 is fixed on connector 2, so that 7, driving shaft
It can rotate, will not be moved in the other direction, as shown in Figure 5.
Described one end of driven shaft 8 is fixed on front-wheel 3, and the other end is provided with balance weight 11, and the balance weight 11 can be arranged
Positioned on driven shaft 8.So that keep plumbness between the front-wheel 3 and loading plate 1.
The outer circle periphery of the front-wheel 3 and trailing wheel 4 is evenly equipped with hairbrush 13, the front-wheel 3 and trailing wheel 4 and loading plate 1 it
Between leave space.The movement locus of the front-wheel 3 and trailing wheel 4 is on the same line.When front-wheel 3 and trailing wheel 4 move, pass through observation
The direction of hairbrush 13 can directly observe the direction of frictional force.
Three truckles 14 are distributed with the inner side of connector 2 along its length, and three truckles 14 are same
On horizontal plane, three truckles 14 are placed in the lower section of rack 5, play a part of supporting rack 5, so that rack 5 is at one
In plane.
During utility model works, driving shaft 7 is rotated, so that gear 6 rotates, band carry-over bar 5 works, meanwhile, actively
Axle 7 drives trailing wheel 4 to rotate, because rack 5 is fixed, so that trailing wheel 4, front-wheel 3, connector 2 are moved together, due to preceding
The hairbrush 13 being equipped with wheel 3 and trailing wheel 4, when making front-wheel 3 and the rotation of trailing wheel 4, its direction can be from the side of hairbrush 13
To being observed.
It is described above, the only detailed description for realizing the utility model specific embodiment of the utility model specification description
It is unrestricted for illustration with schema, but feature of the present utility model is not limited thereto, and those skilled in the art obviously manage
Solution, all scopes of the present utility model should be defined by its scope of the claims, without departing substantially from appended claims institute
On the premise of the spirit and invention scope that define, it is all according to spirit of the present utility model it is similar with its change and implement its
Its embodiment, it should all be included among protection category of the present utility model.
Claims (10)
1. a kind of bicycle friction force direction demonstrating experiment device, including loading plate, front-wheel, trailing wheel, rack, gear, driving shaft
And driven shaft, it is characterised in that：The loading plate is provided with rack support portion, and the rack is fixed in rack support portion, institute
State rack to be meshed with the gear, the driving shaft and driven shaft be arranged in parallel in same level and mutually hung down with rack
Directly, the gear is arranged on the middle part of driving shaft, and described driving shaft one end is fixed on trailing wheel, and its other end forms operating side；
Plumbness is kept between the front wheels and rear wheels and loading plate, described driven shaft one end is fixed on front-wheel, the active
Axle and driven shaft are installed on a connection piece, and rotatably, the outer circle periphery of the front wheels and rear wheels is evenly equipped with hairbrush, institute
State and space is left between front wheels and rear wheels and loading plate.
2. bicycle friction force direction demonstrating experiment device according to claim 1, it is characterised in that：The connector is
Hollow elongate structure, the rack are placed in inside the connector, and connector, and the connection are stretched out in described rack one end
Part is moved relative to the rack.
3. bicycle friction force direction demonstrating experiment device according to claim 2, it is characterised in that：Under the connector
Portion is provided with the guide rail of elongated slot, and the rack is placed in the guide rail of connector elongated slot, and rack moves in the guide rail of elongated slot
It is dynamic.
4. bicycle friction force direction demonstrating experiment device according to claim 2, it is characterised in that：In the connector
Three truckles are distributed with side along its length, and three truckles, in same level, three truckles are put
To support rack below the rack.
5. bicycle friction force direction demonstrating experiment device according to claim 1, it is characterised in that：The driven shaft
The other end is provided with balance weight.
6. bicycle friction force direction demonstrating experiment device according to claim 1, it is characterised in that：The driving shaft is worn
Connector is crossed, and fixed cover is arranged with driving shaft, the fixed cover is fixed on connector.
7. bicycle friction force direction demonstrating experiment device according to claim 1, it is characterised in that：The driving shaft
Operating side, which is provided with, is easy to hand dynamic hand grip portion.
8. bicycle friction force direction demonstrating experiment device according to claim 1, it is characterised in that：The connector
Top is provided with open slot.
9. bicycle friction force direction demonstrating experiment device according to claim 1, it is characterised in that：The rack support
Portion is three uniform vertical rods, and three vertical rods are on the same line, and is all fixed on loading plate.
10. bicycle friction force direction demonstrating experiment device according to claim 1, it is characterised in that：The front-wheel and
The movement locus of trailing wheel is on the same line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720201095.2U CN206628156U (en) | 2017-03-03 | 2017-03-03 | A kind of bicycle friction force direction demonstrating experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720201095.2U CN206628156U (en) | 2017-03-03 | 2017-03-03 | A kind of bicycle friction force direction demonstrating experiment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206628156U true CN206628156U (en) | 2017-11-10 |
Family
ID=60210898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720201095.2U Expired - Fee Related CN206628156U (en) | 2017-03-03 | 2017-03-03 | A kind of bicycle friction force direction demonstrating experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206628156U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211460A (en) * | 2019-07-15 | 2019-09-06 | 湖州师范学院 | A kind of bicycle wheels frictional force does the apparatus for demonstrating of positive negative work |
-
2017
- 2017-03-03 CN CN201720201095.2U patent/CN206628156U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110211460A (en) * | 2019-07-15 | 2019-09-06 | 湖州师范学院 | A kind of bicycle wheels frictional force does the apparatus for demonstrating of positive negative work |
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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: 20171110 Termination date: 20180303 |