CN203455979U - Novel frictional force demonstration device - Google Patents
Novel frictional force demonstration device Download PDFInfo
- Publication number
- CN203455979U CN203455979U CN201320593199.4U CN201320593199U CN203455979U CN 203455979 U CN203455979 U CN 203455979U CN 201320593199 U CN201320593199 U CN 201320593199U CN 203455979 U CN203455979 U CN 203455979U
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- CN
- China
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- motor
- demonstration device
- dynamometer
- frictional force
- slide block
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- Expired - Fee Related
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Abstract
The utility model discloses a novel frictional force demonstration device capable of improving the accuracy of experiment results and overcoming shortages of conventional teaching aids. The novel frictional force demonstration device comprises a dynamometer and a sliding block. The novel frictional force demonstration device is characterized in that the device also comprises a rack, a motor, a conveyor belt and a supporting device of the conveyor belt, a flat board is fixed on the left side of the rack, a pulling ring of the dynamometer is sleeved on a support arranged on the flat board, a hooking ring of the dynamometer is connected with the sliding block through a string, the sliding block is arranged on the conveyor belt, two parallel shafts are arranged on the rack, two rotating cylinders are arranged on the two shafts through bearings, the conveyor belt is arranged on the rotating cylinders, a fixed board is arranged below the conveyor belt, the motor is fixedly connected on the fixed board through bolts, and a belt is connected between a main shaft of the motor and the rotating cylinder on the right side. The novel frictional force demonstration device is advantageous in that the device is simple and reliable, by employing the device, automation can be easily achieved, and the experiment results can be accurately verified.
Description
Technical field
The utility model relates to a kind of teaching aid, relates in particular to a kind of demonstration friction experiment equipment.
Background technology
Two objects that contact with each other have elastic force, when trend generation relative motion will occur or have for they, will on surface of contact, produce a kind of power that hinders relative motion, and this power is just called friction force.If exist friction force must there is following condition, first: to be in contact with one another between object; Second: between object, have mutual squeezing action to produce elastic deformation (having elastic force); The the 3rd: object contact face is coarse; The the 4th: between object, have relative motion trend or relative motion.Four conditions are indispensable.
Existing teaching aid is comparatively simple and easy, is subject to testing people's impact, and pulling force is difficult to stable, be not easy to observe, so experimental result degree of accuracy is not high.
Summary of the invention
In order to improve the accuracy of experimental result, overcome the drawback of existing teaching aid, the technical solution adopted in the utility model is:
A Novel friction power demonstration device, comprises dynamometer and slide block, it is characterized by:
Novel friction power demonstration device also includes frame, motor, travelling belt and bracing or strutting arrangement thereof, on the left side of frame, be fixed with flat board, the drop handle of dynamometer is enclosed within on the support on flat board, the shackle of dynamometer is connected with slide block by cord, slide block is placed on above travelling belt, in frame, there are two parallel axles, two rotating cylinders are contained on two axles by bearing, travelling belt is installed on rotating cylinder, fixed head be positioned at travelling belt below, motor is bolted and is fixed on fixed head, between the main shaft of motor and the rotating cylinder on right side, is connected with belt.
Wherein, Novel friction power demonstration device also has wire to be connected with the power lead of motor by switch, and described slide block upper surface is extra coarse face, and lower surface is shiny surface.
The utility model has the advantages that: simple and easy reliable, be convenient to realize robotization, accurately confirmatory experiment conclusion.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In accompanying drawing: 1, frame; 2, support; 3, dynamometer; 4, shackle; 5, travelling belt; 6, slide block; 7, rotating cylinder; 8, switch; 9, motor; 10, belt; 11, fixed head; 12, wire.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
A Novel friction power demonstration device with driven by motor, mainly includes frame 1, motor 9, travelling belt 5 and bracing or strutting arrangement thereof, and frame 1 adopts thinner thickness angle steel welding production.On the left side of frame 1, be fixed with flat board, the drop handle of dynamometer 3 is enclosed within on the support 2 on flat board, the shackle 4 of dynamometer 3 is connected with slide block 6 by cord, slide block 6 is placed on above travelling belt 5, in frame 1, there are two parallel axles, two rotating cylinders 7 are contained on two axles by bearing, and travelling belt 5 is installed on rotating cylinder 7.Fixed head 11 be positioned at travelling belt 5 just below, motor 9 is bolted and is fixed on fixed head 11, between the main shaft of motor 9 and the rotating cylinder on right side 7, is connected with belt 10.
Novel friction power demonstration device also has wire 12 to be connected with the power lead of motor 9 by switch 8, and described slide block 6 upper surfaces are extra coarse face, and lower surface is shiny surface.
Experiment content is as follows:
1. start motor 9, by smooth one the facing down of slide block 6, testing force meter 3 registrations are stable, record reading F1;
2. starter motor 9, and by the coarse one side (upper surface as shown in Figure 1) of slide block 6 down, testing force meter 3 registrations are stable, record reading F2;
3. Closing Switch 8, by smooth one the facing down of slide block 6, on slide block 6, place counterweight, and testing force meter 3 registrations are stable, record reading F3.
Finally, compare F1 and F2, we learn: friction force size is relevant with surface of contact degree of roughness, and more coarse, friction force is larger.Relatively F1 and F3, reach a conclusion: the quality positive correlation of friction force size and slide block.
Embodiment recited above is described preferred implementation of the present utility model; not design of the present utility model and protection domain are limited; do not departing under the prerequisite of the utility model design concept; various modification and improvement that in this area, common engineering technical personnel make the technical solution of the utility model, all should fall into protection domain of the present utility model.
Claims (2)
1. a Novel friction power demonstration device, comprise dynamometer (3) and slide block (6), it is characterized in that: Novel friction power demonstration device also includes frame (1), motor (9), travelling belt (5) and bracing or strutting arrangement thereof, on the left side of frame (1), be fixed with flat board, the drop handle of dynamometer (3) is enclosed within on the support (2) on flat board, the shackle (4) of dynamometer (3) is connected with slide block (6) by cord, slide block (6) is placed on travelling belt (5) above, in frame (1), there are two parallel axles, two rotating cylinders (7) are contained on two axles by bearing, the upper travelling belt (5) of installing of rotating cylinder (7), fixed head (11) be positioned at travelling belt (5) below, motor (9) is bolted and is fixed on fixed head (11), between the rotating cylinder (7) on the main shaft of motor (9) and right side, be connected with belt (10).
2. Novel friction power demonstration device according to claim 1, is characterized in that: Novel friction power demonstration device also has wire (12) to be connected with the power lead of motor by switch (8), and described slide block (6) upper surface is extra coarse face, and lower surface is shiny surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320593199.4U CN203455979U (en) | 2013-09-25 | 2013-09-25 | Novel frictional force demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320593199.4U CN203455979U (en) | 2013-09-25 | 2013-09-25 | Novel frictional force demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203455979U true CN203455979U (en) | 2014-02-26 |
Family
ID=50135840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320593199.4U Expired - Fee Related CN203455979U (en) | 2013-09-25 | 2013-09-25 | Novel frictional force demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203455979U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241542A (en) * | 2015-08-30 | 2016-01-13 | 盐城工学院 | Frictional screaming noise generation method and device |
| CN105243932A (en) * | 2015-08-30 | 2016-01-13 | 盐城工学院 | Frictional vibration generation method and device |
| CN105788415A (en) * | 2016-05-28 | 2016-07-20 | 薛沐辉 | Axle torque experimental device |
| CN108022484A (en) * | 2017-12-22 | 2018-05-11 | 赵耀 | A kind of Physical Experiment friction force demonstration device |
-
2013
- 2013-09-25 CN CN201320593199.4U patent/CN203455979U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241542A (en) * | 2015-08-30 | 2016-01-13 | 盐城工学院 | Frictional screaming noise generation method and device |
| CN105243932A (en) * | 2015-08-30 | 2016-01-13 | 盐城工学院 | Frictional vibration generation method and device |
| CN105788415A (en) * | 2016-05-28 | 2016-07-20 | 薛沐辉 | Axle torque experimental device |
| CN108022484A (en) * | 2017-12-22 | 2018-05-11 | 赵耀 | A kind of Physical Experiment friction force demonstration device |
| CN108022484B (en) * | 2017-12-22 | 2019-10-22 | 赵耀 | A kind of Physical Experiment friction force demonstration device |
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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: 20140226 Termination date: 20140925 |
|
| EXPY | Termination of patent right or utility model |