CN204270562U - A kind of friction force experiment teaching instrument - Google Patents
A kind of friction force experiment teaching instrument Download PDFInfo
- Publication number
- CN204270562U CN204270562U CN201420818066.7U CN201420818066U CN204270562U CN 204270562 U CN204270562 U CN 204270562U CN 201420818066 U CN201420818066 U CN 201420818066U CN 204270562 U CN204270562 U CN 204270562U
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- CN
- China
- Prior art keywords
- slide plate
- friction force
- fixed pulley
- spring
- experiment teaching
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- 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.)
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Abstract
The utility model discloses a kind of friction force experiment teaching instrument, it comprises base, described base is provided with spring fixed seat, spring, fine rule, first fixed pulley, first fixed pulley mount pad, friction force size display device, driving mechanism, slide plate chair, slide plate, slide block, second fixed pulley, second fixed pulley mount pad, one end of spring is articulated on spring fixed seat, the other end of spring is connected with one end of fine rule, fine rule is wound on the first fixed pulley and exit is connected with the hook of slide block side, slide block is placed on slide plate, driving mechanism drives slide plate to move around on slide plate chair, friction force size display device is arranged on the side of spring fixed seat.The utility model friction force experiment teaching instrument have test result directly perceived, accurately, reduce easier reliable, the safety and stability of human factor, operation, different situations can be detected under the advantage such as friction force size.
Description
Technical field
The utility model relates to instruments used for education, specifically refers to a kind of friction force experiment teaching instrument.
Background technology
The existing friction force experimental apparatus in laboratory, only have one piece of plank and a slide block and a dull and stereotyped dynamometer to form, will drag plank by hand due to during experiment, operation inconvenience, dynamometer registration is unstable, and the visibility of registration is little, and greatly, experiment effect is poor for error.
Utility model content
The purpose of this utility model be to provide a kind of test result directly perceived, accurately, reduce easier reliable, the safety and stability of human factor, operation, different situations can be detected under friction force size friction force experiment teaching instrument.
The utility model can be achieved through the following technical solutions:
The utility model discloses a kind of friction force experiment teaching instrument, comprise base, described base is provided with spring fixed seat, spring, fine rule, first fixed pulley, first fixed pulley mount pad, friction force size display device, driving mechanism, slide plate chair, slide plate, slide block, second fixed pulley, second fixed pulley mount pad, one end of spring is articulated on spring fixed seat, the other end of spring is connected with one end of fine rule, fine rule is wound on the first fixed pulley and exit is connected with the hook of slide block side, slide block is placed on slide plate, slide plate is arranged on slide plate chair, slide plate chair is positioned on the side of base, the hook of slide block opposite side is connected with counterweight line, counterweight line is connected with counterweight through the second fixed pulley, second fixed pulley mount pad is arranged on the end of slide plate, driving mechanism drives slide plate to move around on slide plate chair, friction force size display device is arranged on the side of spring fixed seat.
Described friction force size display device comprises pointer, index dial, and one end of pointer is fixedly connected with the first fixed pulley, and the other end of pointer points on the numerical scale on index dial, and the rotational angle of the first fixed pulley is directly proportional to the swing of pointer.
Described friction force size display device comprises force snesor, LED display, and force snesor is connected on spring, and the strength size that force snesor obtains is delivered in LED display in time.
Described driving mechanism is pusher, and the catch bar of pusher is connected with one end of slide plate, and pusher slowly promotes slide plate evenly and moves.
Described pusher is provided with kayser, and kayser pins pusher.
Slide plate is provided with plate washer.
Described slide plate and slide block change surface of contact degree of roughness and surface of contact area.
Described driving mechanism is motor.
Described motor is direct current motor or servomotor, and direct current motor or servomotor are connected with reducing gear.
Slide plate is provided with plate washer, and slide plate and slide block change surface of contact degree of roughness and surface of contact area.
The utility model friction force experiment teaching instrument has following beneficial effect: the registration of dynamometer amplified, and increase the visibility of registration, the drift angle of pointer is directly proportional to spring force, reduces experimental error.Application is dragged rail and pusher (or installing direct current motor) to realize automatically promoting slide plate and is slowly moved, make easier reliable, the safety and stability of operation, dynamometer registration is more stable, make full use of six faces of rectangular parallelepiped, change slider contact surface degree of roughness and surface of contact area and rolling friction, meet junior middle school, senior middle school's friction force teaching demand.
Accompanying drawing explanation
Accompanying drawing 1 is the principle connection diagram of the utility model friction force experiment teaching instrument;
Accompanying drawing 2 is the structural representation of the utility model friction force experiment teaching instrument;
Accompanying drawing 3 shifts out status architecture schematic diagram for Fig. 2 slide plate;
Accompanying drawing 4 is the structural representation of the employing motor of the utility model friction force experiment teaching instrument;
In figure: 1. base, 2. slide rail, 3. slide plate, 4. clip, 5. the first fixed pulley, 6. slide block, 7. plate washer, 8. fine rule, 9. spring, 10. pointer, 11. index dials, 12. pushers, 13. kaysers, 14. spring fixed seats, 15. catch bars, 16. first fixed pulley mount pads, 17. slide plate chairs, 18. second fixed pulleys, 19. second fixed pulley mount pads, 20. motor.
Embodiment
Below in conjunction with Figure of description, the utility model is further described.
As shown in accompanying drawing 1 ~ 3, the utility model discloses a kind of friction force experiment teaching instrument, comprise base 1, described base 1 is provided with spring fixed seat 14, spring 9, fine rule 8, first fixed pulley 5, first fixed pulley mount pad 16, friction force size display device, driving mechanism, slide plate chair 17, slide plate 3, slide block 6, second fixed pulley 18, second fixed pulley mount pad 19, one end of spring 9 is articulated on spring fixed seat 14, the other end of spring 9 is connected with one end of fine rule 8, fine rule 8 is wound on the first fixed pulley 5 and exit is connected with the hook of slide block 6 side, slide block 6 is placed on slide plate 3, slide plate 3 is arranged on slide plate chair 17, slide plate chair 17 is positioned on the side of base 1, the hook of slide block 6 opposite side is connected with counterweight line, counterweight line is connected with counterweight through the second fixed pulley 18, second fixed pulley mount pad 19 is arranged on the end of slide plate 3, and driving mechanism drives slide plate 3 to move around on slide plate chair 17, and friction force size display device is arranged on the side of spring fixed seat 14.Described friction force size display device comprises pointer 10, index dial 11, one end of pointer 10 is fixedly connected with the first fixed pulley 5, the other end of pointer 10 points on the numerical scale on index dial 11, and the rotational angle of the first fixed pulley 5 is directly proportional to the swing of pointer 10.In addition, described friction force size display device comprises force snesor, LED display, and force snesor is connected on spring 9, and the strength size that force snesor obtains is delivered in LED display in time.Described driving mechanism is pusher 12, and the catch bar of pusher 12 is connected with one end of slide plate 3, and pusher 12 slowly promotes slide plate 3 evenly and moves.Described pusher 12 is provided with kayser 13, and kayser 13 pins pusher 12.Slide plate 3 is provided with plate washer 7.The end of slide plate 3 is provided with clip 4.Described slide plate 3 changes surface of contact degree of roughness and surface of contact area with slide block 6.
As shown in Figure 4, described driving mechanism is motor 20.Described motor is direct current motor or servomotor, and direct current motor or servomotor are connected with reducing gear.Slide plate 3 is provided with plate washer 7, and slide plate 3 and slide block 6 change surface of contact degree of roughness and surface of contact area.
The course of work of the utility model friction force experiment teaching instrument and principle: the registration of dynamometer is amplified by application lever and wheel shaft principle (or application of force sensor and LED display), increase the visibility of registration, the drift angle of pointer is directly proportional to spring force, reduces experimental error.Application is dragged rail and pusher (or installing direct current motor) to realize automatically promoting slide plate and is slowly moved, make easier reliable, the safety and stability of operation, dynamometer registration is more stable, makes full use of six faces of rectangular parallelepiped, changes slider contact surface degree of roughness and surface of contact area and rolling friction.Slide plate reset time plate washer block slide block make fine rule keep extended state in order to avoid clot.Fixed pulley is used for changing the direction of fine rule pulling force, can measure the gravity of slide block and hook code.Clip is used for fixing surface of contact (as cloth, paper tape etc.), can change slide plate surface of contact degree of roughness.When testing complete, kayser pins pusher and makes this device be in most short status, is convenient for carrying and stores.
The above, be only preferred embodiment of the present utility model, not does any pro forma restriction to the utility model; The those of ordinary skill of all industry all can shown in by specification accompanying drawing and the above and implement the utility model swimmingly; But all those skilled in the art are not departing within the scope of technical solutions of the utility model, disclosed above technology contents can be utilized and make a little change, modify with differentiation equivalent variations, be Equivalent embodiments of the present utility model; Meanwhile, all according to substantial technological of the present utility model to the change of any equivalent variations that above embodiment is done, modify and differentiation etc., within the protection domain all still belonging to the technical solution of the utility model.
Claims (10)
1. a friction force experiment teaching instrument, comprise base (1), it is characterized in that: described base (1) is provided with spring fixed seat (14), spring (9), fine rule (8), first fixed pulley (5), first fixed pulley mount pad (16), friction force size display device, driving mechanism, slide plate chair (17), slide plate (3), slide block (6), second fixed pulley (18), second fixed pulley mount pad (19), one end of spring (9) is articulated on spring fixed seat (14), the other end of spring (9) is connected with one end of fine rule (8), fine rule (8) is wound on the upper also exit of the first fixed pulley (5) and is connected with the hook of slide block (6) side, slide block (6) is placed on slide plate (3), slide plate (3) is arranged on slide plate chair (17), slide plate chair (17) is positioned on the side of base (1), the hook of slide block (6) opposite side is connected with counterweight line, counterweight line is connected with counterweight through the second fixed pulley (18), second fixed pulley mount pad (19) is arranged on the end of slide plate (3), driving mechanism drives slide plate (3) to move around on slide plate chair (17), friction force size display device is arranged on the side of spring fixed seat (14).
2. friction force experiment teaching instrument according to claim 1, it is characterized in that: described friction force size display device comprises pointer (10), index dial (11), one end of pointer (10) is fixedly connected with the first fixed pulley (5), the other end of pointer (10) points on the numerical scale on index dial (11), and the rotational angle of the first fixed pulley (5) is directly proportional to the swing of pointer (10).
3. friction force experiment teaching instrument according to claim 1, it is characterized in that: described friction force size display device comprises force snesor, LED display, force snesor is connected on spring (9), and the strength size that force snesor obtains is delivered in LED display in time.
4. the friction force experiment teaching instrument according to Claims 2 or 3, it is characterized in that: described driving mechanism is pusher (12), the catch bar of pusher (12) is connected with one end of slide plate (3), and it is mobile that pusher (12) slowly promotes slide plate (3) evenly.
5. friction force experiment teaching instrument according to claim 4, is characterized in that: described pusher (12) is provided with kayser (13), and kayser (13) pins pusher (12).
6. friction force experiment teaching instrument according to claim 5, is characterized in that: slide plate (3) is provided with plate washer (7).
7. friction force experiment teaching instrument according to claim 6, is characterized in that: described slide plate (3) and slide block (6) change surface of contact degree of roughness and surface of contact area.
8. the friction force experiment teaching instrument according to Claims 2 or 3, is characterized in that: described driving mechanism is motor.
9. friction force experiment teaching instrument according to claim 8, is characterized in that: described motor is direct current motor or servomotor, and direct current motor or servomotor are connected with reducing gear.
10. friction force experiment teaching instrument according to claim 9, is characterized in that: slide plate (3) is provided with plate washer (7), and slide plate (3) and slide block (6) change surface of contact degree of roughness and surface of contact area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420818066.7U CN204270562U (en) | 2014-12-22 | 2014-12-22 | A kind of friction force experiment teaching instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420818066.7U CN204270562U (en) | 2014-12-22 | 2014-12-22 | A kind of friction force experiment teaching instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204270562U true CN204270562U (en) | 2015-04-15 |
Family
ID=52805416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420818066.7U Expired - Fee Related CN204270562U (en) | 2014-12-22 | 2014-12-22 | A kind of friction force experiment teaching instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204270562U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023736A (en) * | 2016-07-30 | 2016-10-12 | 董亚伦 | Physics teaching aid |
-
2014
- 2014-12-22 CN CN201420818066.7U patent/CN204270562U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106023736A (en) * | 2016-07-30 | 2016-10-12 | 董亚伦 | Physics teaching aid |
| CN106023736B (en) * | 2016-07-30 | 2018-10-12 | 广州迅云教育科技有限公司 | Physics teaching teaching aid |
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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: 20150415 Termination date: 20171222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |