CN209765841U - Force measurement demonstration device for physics teaching - Google Patents
Force measurement demonstration device for physics teaching Download PDFInfo
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- CN209765841U CN209765841U CN201920134310.0U CN201920134310U CN209765841U CN 209765841 U CN209765841 U CN 209765841U CN 201920134310 U CN201920134310 U CN 201920134310U CN 209765841 U CN209765841 U CN 209765841U
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- upper portion
- speed
- sliding plate
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- demonstration
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Abstract
The utility model discloses a force measurement demonstration device for physics teaching, which comprises a demonstration platform base, a force sensor, a speed-adjustable small motor and a movable graduated scale, wherein the upper part of the demonstration platform base is fixedly provided with a support frame, the upper part of the support frame is provided with the movable graduated scale, the upper part of the movable graduated scale is provided with a rectangular paper strip and a fixing clamp, the upper part of the demonstration platform base is provided with the speed-adjustable small motor, the upper part of the speed-adjustable small motor is connected with a driven pulley through a transmission belt, the upper part of the driven pulley is fixedly provided with a rotating disc, the lower part of the driven pulley is provided with the speed sensor, the upper part of the rotating disc is provided with a sliding plate, the upper part of the sliding plate is provided with a spring, the utility model is provided with the force sensor, can detect the centripetal force received by the moving cylinder, can ensure that the object can achieve the uniform and stable effect when doing circular motion.
Description
Technical Field
The utility model relates to a physical teaching field specifically is a dynamometry presentation device for physical teaching.
Background
The demonstration of the physical experiment is an important part of the physics, and strict physical experiments are required to be used as the basis during teaching, so the physical experiment plays an important role in establishment and development of the physics, a teacher should actively develop an experiment project suitable for teaching, experiment resources are fully utilized to carry out the experiment, observation and experiment skills of students are cultured by observation and experiment, learning interest is aroused, and the demonstration device has an irreplaceable important function, the object carries out curvilinear motion which is the most common motion in the nature, any curvilinear motion can be regarded as circular motion of a plurality of small segments, learning and mastering the circular motion rule are basic qualities which the students should have, the existing demonstration device for measuring the force is complex in structure and difficult to operate, and the rotating speed is controlled by hands during the experiment, and the measurement error is large.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dynamometry presentation device for physical teaching to solve current physics dynamometry presentation device structure more complicated, the operation is more difficult, and control the rotational speed with the hand when doing the experiment, measuring error is bigger.
In order to achieve the above object, the utility model provides a following technical scheme: a force measurement demonstration device for physics teaching, which comprises a demonstration platform base, a force sensor, a speed sensor, a small motor with adjustable speed and a movable graduated scale, a supporting frame is fixedly arranged at the upper part of the demonstration platform base, fixed blocks are fixedly arranged at the two ends of the supporting frame, a movable graduated scale is arranged at the upper part of the supporting frame, the upper part of the movable graduated scale is provided with a rectangular paper strip and a fixing clamp, the upper part of the demonstration platform base is provided with a small motor with adjustable speed, the upper part of the speed-adjustable small motor is connected with a driven belt wheel through a transmission belt, the upper part of the driven belt wheel is fixedly provided with a rotating disc, a speed sensor is arranged at the lower part of the driven belt wheel, a sliding plate is arranged at the upper part of the rotating disc, a spring is arranged at the upper part of the sliding plate, and the spring is connected with the movable cylinder through a connecting wire, and the right end of the spring is provided with a force sensor.
Preferably, the upper portion of portable scale is provided with rotary switch, and the both ends of portable scale are equipped with the screw hole, utilizes rotary switch to fix portable scale, prevents the downstream.
Preferably, the spring and the upper part of the moving cylinder are provided with soft pointers, so that the distance of the moving cylinder can be recorded on the rectangular paper slip.
Preferably, the lower part of the driven pulley is provided with a support rotating shaft which has the function of supporting and fixing the driven pulley.
Preferably, smooth bosses are arranged in the middle of the sliding plate and the moving cylinder, the sliding plate is square, the moving cylinder can move outwards along the smooth bosses, and friction force between the sliding plate and the moving cylinder can be reduced.
Preferably, the movable graduated scale and the support frame are connected through a sliding buckle, so that the movable graduated scale and the support frame can be in sliding connection.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses set up force transducer and speedtransmitter, can detect the centripetal force size that the removal section of thick bamboo received when rotating, and from the rotational speed size of band pulley, and adopt adjustable speed small-size motor as the power supply, can guarantee that the object is when being circular motion, can reach even stable effect, utilize portable scale and rectangle note conveniently to read the data of removal section of thick bamboo, can carry out the comparison of multiunit data simultaneously, verify the formula of centripetal force through the experiment, thereby deepen the understanding and the memory of student to the formula, dynamometry demonstration process is convenient for operate, the boss on sliding plate upper portion can pull the direction removal of removal section of thick bamboo to parallel band pulley, and with the effect on force transducer.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic view of the top view structure of the present invention.
In the figure: the demonstration platform comprises a support frame 1, a rectangular paper strip 2, a movable cylinder 3, a connecting line 4, a fixing clamp 5, a spring 6, a fixing block 7, a force sensor 8, a sliding plate 9, a rotating disc 10, a speed sensor 11, a driven belt wheel 12, a demonstration platform base 13, a speed-adjustable small motor 14, a transmission belt 15 and a movable graduated scale 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, in the embodiment of the present invention, a force measurement demonstration apparatus for physics teaching comprises a demonstration platform base 13, a force sensor 8, a speed sensor 11, a speed-adjustable small motor 14 and a movable scale 16, wherein a support frame 1 is fixedly arranged on the upper portion of the demonstration platform base 13, the support frame 1 has an effect of stabilizing the movable scale 16, fixed blocks 7 are fixedly arranged at two ends of the support frame 1, the fixed blocks 7 can prevent the movable scale 16 from moving downwards, the movable scale 16 is arranged on the upper portion of the support frame 1, a rectangular paper strip 2 and a fixed clamp 5 are arranged on the upper portion of the movable scale 16, the rectangular paper strip 2 has an effect of recording a movable cylinder 3, the speed-adjustable small motor 14 is arranged on the upper portion of the demonstration platform base 13, the upper portion of the speed-adjustable small motor 14 is connected with a driven pulley 12 through a driving belt 15, a rotating disc 10 is fixedly arranged on the upper portion of the driven pulley 12, a speed sensor 11 is arranged on the lower portion of the driven pulley 12, the speed sensor 11 can detect the rotating speed of the driven pulley 12, a sliding plate 9 is arranged on the upper portion of the rotating disc 10, a spring 6 is arranged on the upper portion of the sliding plate 9, the spring 6 is connected with the movable cylinder 3 through a connecting line 4, a force sensor 8 is arranged at the left end of the spring 6, the force sensor 8 can measure the acting force of the movable cylinder 3, a rotary switch is arranged on the upper portion of the movable graduated scale 16, threaded holes are formed in two ends of the movable graduated scale 16, the movable graduated scale 16 is fixed by the rotary switch and prevented from moving downwards, soft pointers are arranged on the upper portions of the spring 6 and the movable cylinder 3, the distance of the movable cylinder 3 can be recorded on the rectangular paper strip 2, and a supporting rotating shaft is arranged on the, the movable graduated scale has the functions of supporting and fixing the driven belt wheel 12, smooth bosses are arranged in the middle parts of the sliding plate 9 and the movable barrel 3, the sliding plate 9 is square, the movable barrel 3 can move outwards along the smooth bosses, the friction force between the sliding plate 9 and the movable barrel 3 can be reduced, the movable graduated scale 16 is connected with the support frame 1 through a sliding buckle, and the movable graduated scale 16 can be connected with the support frame 1 in a sliding mode.
The utility model discloses a but speed regulation small-size motor 14 drives driven pulley 12 through drive belt 15 and revolves, can adjust the rotational speed of speed regulation small-size motor 14 as required, it also can be along with rotating to fix at the rolling disc 10 on driven pulley 12 upper portion, the removal section of thick bamboo 3 on the smooth boss upper portion of sliding plate 9 is following the rotation, be circular motion, removal section of thick bamboo 3 is connected with spring 6 through connecting wire 4 and force sensor 8, when rolling disc 10 rotates at the uniform velocity, do the radius of uniform velocity circular motion with the soft pointer on spring 6 upper portion, the soft pointer in the removal section of thick bamboo 3 upper portion can indicate centripetal force size, the radius and the centripetal force size of uniform velocity circular motion that can be clear instruction, after rolling disc 10 rotates at the uniform velocity stably, will become flexible rotary switch on movable scale 16 upper portion, make movable scale 16 remove downwards, let rectangle note 2 of movable scale 16 lower part expose a little, the soft pointer marks the upper part of the rectangular paper strip 2, and the scale on the upper part of the movable graduated scale 16 is combined to conveniently read the size of the circular motion radius r and the size of the centripetal force F.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and any reference signs in the claims shall not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a dynamometry presentation device for physical teaching, includes demonstration platform base (13), force transducer (8), speedtransmitter (11), adjustable speed small motor (14) and portable scale (16), its characterized in that: the demonstration platform comprises a demonstration platform base (13), a support frame (1) is fixedly arranged on the upper portion of the demonstration platform base (13), fixed blocks (7) are fixedly arranged at two ends of the support frame (1), a movable graduated scale (16) is arranged on the upper portion of the support frame (1), a rectangular paper tape (2) and a fixed clamp (5) are arranged on the upper portion of the movable graduated scale (16), a speed-adjustable small motor (14) is arranged on the upper portion of the demonstration platform base (13), the upper portion of the speed-adjustable small motor (14) is connected with a driven belt wheel (12) through a transmission belt (15), a rotating disc (10) is fixedly arranged on the upper portion of the driven belt wheel (12), a speed sensor (11) is arranged on the lower portion of the driven belt wheel (12), a sliding plate (9) is arranged on the upper portion of the rotating disc (10), a spring (6) is arranged on the upper portion of the sliding plate (, and a force sensor (8) is arranged at the left end of the spring (6).
2. A force measurement demonstration device for physics teaching according to claim 1 wherein: the upper portion of portable scale (16) is provided with rotary switch, and the both ends of portable scale (16) are equipped with the screw hole.
3. A force measurement demonstration device for physics teaching according to claim 1 wherein: and soft pointers are arranged at the upper parts of the spring (6) and the movable cylinder (3).
4. A force measurement demonstration device for physics teaching according to claim 1 wherein: and a supporting rotating shaft is arranged at the lower part of the driven belt wheel (12).
5. A force measurement demonstration device for physics teaching according to claim 1 wherein: smooth bosses are arranged in the middle of the sliding plate (9) and the moving cylinder (3), and the sliding plate (9) is square.
6. A force measurement demonstration device for physics teaching according to claim 1 wherein: the movable graduated scale (16) is connected with the support frame (1) through a sliding buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920134310.0U CN209765841U (en) | 2019-01-26 | 2019-01-26 | Force measurement demonstration device for physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920134310.0U CN209765841U (en) | 2019-01-26 | 2019-01-26 | Force measurement demonstration device for physics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209765841U true CN209765841U (en) | 2019-12-10 |
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ID=68750604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920134310.0U Expired - Fee Related CN209765841U (en) | 2019-01-26 | 2019-01-26 | Force measurement demonstration device for physics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209765841U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393739A (en) * | 2021-05-27 | 2021-09-14 | 呼伦贝尔学院 | Physical centrifugal force demonstrator |
-
2019
- 2019-01-26 CN CN201920134310.0U patent/CN209765841U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113393739A (en) * | 2021-05-27 | 2021-09-14 | 呼伦贝尔学院 | Physical centrifugal force demonstrator |
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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 |
Granted publication date: 20191210 Termination date: 20210126 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |