CN210574548U - Frictional force presentation device for physics teaching - Google Patents
Frictional force presentation device for physics teaching Download PDFInfo
- Publication number
- CN210574548U CN210574548U CN201921003419.7U CN201921003419U CN210574548U CN 210574548 U CN210574548 U CN 210574548U CN 201921003419 U CN201921003419 U CN 201921003419U CN 210574548 U CN210574548 U CN 210574548U
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- Prior art keywords
- frictional force
- workstation
- friction force
- demonstration device
- connecting seat
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Abstract
The utility model discloses a frictional force presentation device for physical teaching, comprises a workbench, the workstation upper end is provided with the mount table, the mount table upper end is provided with the spring dynamometer, spring dynamometer one end is provided with the couple, mount table one side is provided with coarse sliding table, coarse sliding table upper end is provided with measures the body, it is provided with first stay cord to measure body one end, it is provided with the second stay cord to measure the body other end, workstation one end is provided with the pulley support. The utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization through the promotion of slip table, makes the movable table become certain angle with the workstation, and at a specific angle, the horizontal component of heavy object piece gravity equals with the frictional force that the measuring body receives, and the at uniform velocity linear motion of measured object reads out elasticity, moves the slip table right, and the pulling force that the measuring body receives is greater than frictional force, and accelerated motion, whether inspection frictional force changes.
Description
Technical Field
The utility model relates to a frictional force experiment technical field specifically is frictional force presentation device for physical teaching.
Background
Using a spring dynamometer, hooking a measured object by a hook, and performing uniform linear motion on a horizontal table top, wherein the reading on the spring dynamometer is the magnitude of the friction force of the measured object, and the pulling force of a spring is equal to the friction force; the acceleration movement and the friction force are not changed.
The friction force demonstration device for the existing physics teaching horizontally applies a force to enable a measured object to move linearly at a constant speed, reads the elastic force, and cannot verify whether the friction force changes when the measured object moves at an accelerated speed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a frictional force presentation device for physical teaching to solve the current frictional force presentation device level for physical teaching who provides in the above-mentioned background art and apply a power, make the at uniform velocity linear motion of testee, read out elasticity, when unable verification testee accelerated motion, the problem whether frictional force changes.
In order to achieve the above object, the utility model provides a following technical scheme: the friction force demonstration device for physical teaching comprises a workbench, wherein an installation platform is arranged at the upper end of the workbench, a spring dynamometer is arranged at the upper end of the installation platform, a hook is arranged at one end of the spring dynamometer, a rough sliding table is arranged on one side of the installation platform, a measuring body is arranged at the upper end of the rough sliding table, a first pull rope is arranged at one end of the measuring body, a second pull rope is arranged at the other end of the measuring body, a pulley support is arranged at one end of the workbench, a fixed pulley is arranged on the pulley support, a support rod is arranged at the lower end of the workbench, an installation seat is arranged at one end of the support rod, a rotating shaft is arranged on the installation seat, a connecting seat is arranged outside the rotating shaft, a movable platform is arranged at the lower end of the connecting seat, the sliding table lower end is provided with a sliding seat.
Preferably: the mount table passes through the bolt fastening and is in workstation upper end, the spring dynamometer passes through the bolt fastening and is in mount table upper end, and bolted connection's advantage is convenient for dismantle.
Preferably: the measuring body can slide on the upper end of the rough sliding table, so that the elastic force is equal to the friction force.
Preferably: the pulley support is welded at one end of the workbench, and forms a forty-five degree angle with the upper surface of the workbench, so that the direction of the force can be changed conveniently.
Preferably: the mounting seat has two, the welding is in bracing piece one end, be provided with the round hole on the mounting seat, the welded advantage is the fastening of connecting.
Preferably: the rotating shaft is arranged in the round hole of the mounting seat and fixed through a pin, relative rotation does not occur, the number of the connecting seats is two, the round hole is formed in the connecting seat, a bearing is arranged in the round hole, the connecting seat is rotatably connected with the rotating shaft, and the movable table can rotate around the rotating shaft by an angle.
Preferably: the movable table is smooth in surface, the heavy object blocks can slide on the movable table, and the sliding table can slide on the sliding seat, so that the stress size can be changed conveniently.
Compared with the prior art the utility model discloses beneficial effect: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization through the promotion of slip table, makes the movable table become certain angle with the workstation, and at a specific angle, the horizontal component of heavy object piece gravity equals with the frictional force that the measuring body receives, and the at uniform velocity linear motion of measured object reads out elasticity, moves the slip table right, and the pulling force that the measuring body receives is greater than frictional force, and accelerated motion, whether inspection frictional force changes.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a front view of the present invention;
FIG. 3 is a schematic structural view of the mounting table and the spring dynamometer of the present invention;
FIG. 4 is a schematic structural view of the pulley support and the fixed pulley of the present invention;
fig. 5 is a schematic structural view of the connection seat and the movable table of the present invention.
Reference numbers in the figures: 1. a work table; 2. an installation table; 3. a spring load cell; 4. hooking; 5. a rough slipway; 6. a measuring body; 7. a first pull cord; 8. a second pull cord; 9. a pulley support; 10. a fixed pulley; 11. a support bar; 12. a mounting seat; 13. a rotating shaft; 14. a connecting seat; 15. a movable table; 16. a baffle plate; 17. a sliding table; 18. a heavy material block; 19. a slide carriage.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
Example (b): as shown in fig. 1-5, the utility model provides a technical solution: a friction force demonstration device for physical teaching comprises a workbench 1, wherein an installation platform 2 is arranged at the upper end of the workbench 1, a spring dynamometer 3 is arranged at the upper end of the installation platform 2, the spring dynamometer 3 is used for displaying the magnitude of elastic force, a hook 4 is arranged at one end of the spring dynamometer 3, a rough sliding table 5 is arranged at one side of the installation platform 2, a measuring body 6 is arranged at the upper end of the rough sliding table 5, a first pull rope 7 is arranged at one end of the measuring body 6, a second pull rope 8 is arranged at the other end of the measuring body 6, a pulley support 9 is arranged at one end of the workbench 1, the pulley support 9 is used for changing the direction of force without changing the magnitude of the force, a fixed pulley 10 is arranged on the pulley support 9, a support rod 11 is arranged at the lower end of the workbench 1, an installation seat 12 is arranged at one end of the support rod, the lower end of the connecting seat 14 is provided with a movable table 15, one end of the movable table 15 is provided with a baffle plate 16, one side of the movable table 15 is provided with a sliding table 17, the sliding table 17 is used for supporting the movable table 15 and pushing the movable table 15 to generate an angle, the upper side of the baffle plate 16 is provided with a weight block 18, the weight block 18 is used for providing tension, and the lower end of the sliding table 17 is provided with a sliding seat 19.
The utility model discloses a theory of operation and use flow: when the friction force demonstration device for physics teaching works, a first pull rope 7 is used for connecting a measuring body 6 with a hook 4, one end of a second pull rope 8 is fixed on the measuring body 6, the other end of the second pull rope is fixed on a heavy object block 18, a sliding table 17 is pushed to enable a movable table 15 to rotate for a certain angle, at a specific angle, the horizontal component of the gravity of the heavy object block 18 is equal to the friction force borne by the measuring body 6, the measured object linearly moves at a constant speed, the elastic force is read, the sliding table 17 moves rightwards, the tensile force borne by the measuring body 6 is larger than the friction force, the movement is accelerated, and whether the friction.
Preferably: the mounting table 2 is fixed at the upper end of the workbench 1 through bolts, the spring dynamometer 3 is fixed at the upper end of the mounting table 2 through bolts, and the bolts are connected with one another and have the advantage of being convenient to detach.
Preferably: the measuring body 6 can slide on the upper end of the rough slide 5, which is done so that the elastic force equals the friction force.
Preferably: the pulley support 9 is welded at one end of the workbench 1 and forms a forty-five degree angle with the upper surface of the workbench 1, so that the direction of force can be changed conveniently.
Preferably: the mount pad 12 has two, welds in bracing piece 11 one end, is provided with the round hole on the mount pad 12, and the welded advantage is the connection fastening.
Preferably: rotating shaft 13 is installed in the round hole of mount pad 12, and is fixed through the pin, does not take place relative rotation, and connecting seat 14 has two, has the round hole on connecting seat 14, is provided with the bearing in the round hole, and connecting seat 14 rotates with rotating shaft 13 and is connected, can make the revolving stage 15 revolute 13 turned angle doing so.
Preferably: the movable table 15 has a smooth surface, the weight block 18 can slide on the movable table 15, and the sliding table 17 can slide on the sliding base 19, so that the stress intensity can be changed.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements and the like can be made in the technical solutions of the foregoing embodiments or in some technical features of the foregoing embodiments.
Claims (7)
1. Frictional force presentation device for physical teaching, including the workstation, its characterized in that: the utility model discloses a measuring device for the spring dynamometer, including workstation, spring dynamometer, workstation support, fixed pulley, workstation, pivot, connecting seat, movable table, pivot, connecting seat, movable table one end, fixed pulley.
2. The friction force demonstration device for physical teaching according to claim 1, wherein the mounting table is fixed to the upper end of the work table by bolts, and the spring force gauge is fixed to the upper end of the mounting table by bolts.
3. The friction force demonstration device for physical teaching according to claim 1, wherein the measuring body is slidable on an upper end of the rough sliding table.
4. The friction force demonstration device for physical teaching according to claim 1, wherein the pulley support is welded to one end of the worktable at an angle of forty-five degrees to the upper surface of the worktable.
5. The friction force demonstration device for physics teaching of claim 1 wherein there are two said mounting seats, welded at one end of said support bar, said mounting seats having circular holes.
6. The friction force demonstration device for physics teaching of claim 1 wherein said rotating shaft is installed in a circular hole of said mounting seat and fixed by a pin so as not to rotate relatively, and there are two of said connecting seats, there is a circular hole on said connecting seat, a bearing is installed in the circular hole, and said connecting seat is rotatably connected with said rotating shaft.
7. The friction force demonstration device for physical teaching according to claim 1, wherein the movable table has a smooth surface, the heavy object block is slidable on the movable table, and the sliding table is slidable on the sliding base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921003419.7U CN210574548U (en) | 2019-07-01 | 2019-07-01 | Frictional force presentation device for physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921003419.7U CN210574548U (en) | 2019-07-01 | 2019-07-01 | Frictional force presentation device for physics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210574548U true CN210574548U (en) | 2020-05-19 |
Family
ID=70635938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921003419.7U Expired - Fee Related CN210574548U (en) | 2019-07-01 | 2019-07-01 | Frictional force presentation device for physics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210574548U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436512A (en) * | 2021-07-06 | 2021-09-24 | 娄洁清 | Physical friction force experiment demonstration device |
-
2019
- 2019-07-01 CN CN201921003419.7U patent/CN210574548U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113436512A (en) * | 2021-07-06 | 2021-09-24 | 娄洁清 | Physical friction force experiment demonstration device |
| CN113436512B (en) * | 2021-07-06 | 2022-07-01 | 娄洁清 | Physical friction force experiment demonstration device |
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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: 20200519 Termination date: 20210701 |