CN215527014U - Combined double-glass tube free falling body movement experimental instrument - Google Patents
Combined double-glass tube free falling body movement experimental instrument Download PDFInfo
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- CN215527014U CN215527014U CN202120784401.6U CN202120784401U CN215527014U CN 215527014 U CN215527014 U CN 215527014U CN 202120784401 U CN202120784401 U CN 202120784401U CN 215527014 U CN215527014 U CN 215527014U
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- base
- glass tube
- transparent tubes
- collecting channel
- combined double
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- 239000011521 glass Substances 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 22
- 239000010959 steel Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 210000004276 hyalin Anatomy 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of experimental equipment, and particularly relates to a combined double-glass tube free falling body movement experimental instrument which comprises a base, wherein at least two transparent tubes are fixedly arranged on the upper surface of the base, a collecting channel is arranged below the transparent tubes, the transparent tubes are communicated with the collecting channel, a lower sealing plug is arranged at the outlet of the collecting channel, an upper sealing plug is arranged at the upper end of the transparent tubes, an electromagnet is arranged on the lower surface of the upper sealing plug, a bearing groove is arranged in the middle of the lower surface of the electromagnet, a vent pipe is also arranged on the upper sealing plug, the lower end of the vent pipe is communicated with the transparent tubes, the upper end of the vent pipe is connected with an air pump, at least two photoelectric doors are arranged on the transparent tubes, and are connected with a timing device, at least two transparent tubes are arranged on the base, so that the movement of steel balls in the two transparent tubes can be visually compared, meanwhile, the steel ball collecting device is provided with the collecting channel, so that the falling steel balls can be conveniently taken out.
Description
Technical Field
The utility model belongs to the technical field of experimental equipment, and particularly relates to a combined double-glass-tube free-fall motion experimental instrument.
Background
Free fall determination is a basic experimental project in middle school physics, and the accurate measurement of the gravitational acceleration g, commonly used value of 9.81m/s2, has a direct relationship with the local atmospheric pressure. Most of instruments used in the existing teaching of middle school physics experiments are methods for recording on paper tapes tied with falling weights by using a dotting timer, and the experimental instruments are inconvenient to carry into class for demonstration and require students to enter a special laboratory for testing. In addition, it is difficult to visually demonstrate to students the effect of atmospheric pressure on the acceleration of gravity of a free-falling body.
Currently, although there are many methods to measure the acceleration of gravity, the free fall method is the most direct and simple method of all. The existing free falling body movement testing method is searched, most of the free falling body movement of a single small steel ball is measured, the influence of different atmospheric pressures on the gravity acceleration is difficult to directly observe and compare, and the movement characteristics of the free falling body of the small steel ball under normal atmospheric pressure and abnormal atmospheric pressure are difficult to simultaneously observe.
SUMMERY OF THE UTILITY MODEL
The utility model provides a combined double-glass tube free falling body movement experimental instrument aiming at the problems.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a combined double-glass tube free falling body movement experiment instrument comprises a base, wherein at least two transparent tubes are fixedly arranged on the upper surface of the base, a collection channel is arranged below the transparent tubes and is communicated with the collection channel, the collection channel is arranged on the base, a lower sealing plug is arranged at the outlet of the collection channel, an upper sealing plug is arranged at the upper end of the transparent tubes, an electromagnet is arranged on the lower surface of the upper sealing plug, a bearing groove is arranged in the middle of the lower surface of the electromagnet and is used for positioning a steel ball to the middle, a vent tube is further arranged on the upper sealing plug and is provided with a valve, the lower end of the vent tube is communicated with the transparent tubes, the upper end of the vent tube is connected with an air pump to adjust the air pressure in the transparent tubes, and at least two photoelectric doors are arranged on the transparent tubes, the photoelectric door is connected with a timing device, and the timing device is arranged on the upper surface of the base.
Further, a height scale is arranged on the transparent tube.
Still further, the transparent tube is a plastic tube to prevent the transparent tube from being broken due to collision of the transparent tube and the steel ball.
Furthermore, the collecting channel is arranged in a downward inclined mode so as to be convenient for taking out the steel ball.
Furthermore, four angles of the base are all in threaded connection with adjusting studs so as to adjust the levelness of the base.
Furthermore, a horizontal bubble is arranged on the base so as to observe and adjust the levelness of the base.
Furthermore, a gasket is fixedly connected to the lower end of the adjusting stud.
Furthermore, a knob is fixedly connected to the upper end of the adjusting stud.
Furthermore, a spongy cushion is arranged in the collecting channel to slow down the impact of the steel balls.
Compared with the prior art, the utility model has the following advantages: the base is provided with at least two transparent tubes, so that the movement of the steel balls in the two transparent tubes can be visually compared, and meanwhile, the falling steel balls can be conveniently taken out by the collecting channel.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the base of the present invention;
in the figure, a base-1, a transparent tube-2, a collecting channel-3, a lower sealing plug-4, an upper sealing plug-5, an electromagnet-6, a bearing groove-7, a vent pipe-8, a photoelectric door-9, a timing device-10, a height scale-11, an adjusting stud-12, a horizontal bubble-13, a gasket-14, a knob-15 and a spongy cushion-16.
Detailed Description
In order to further illustrate the technical solution of the present invention, the present invention is further illustrated by the following examples.
As shown in fig. 1 and 2, a combined double glass tube free fall motion experiment instrument comprises a base 1, at least two transparent tubes 2 are fixedly arranged on the upper surface of the base 1, the transparent tubes 2 are plastic tubes, height scales 11 are arranged on the transparent tubes 2, a collecting channel 3 is arranged below the transparent tubes 2, the collecting channel 3 is arranged on the base 1, the collecting channel 3 is arranged in a downward inclined manner, a sponge pad 16 is arranged in the collecting channel 3, the transparent tubes 2 are communicated with the collecting channel 3, a lower sealing plug 4 is arranged at an outlet of the collecting channel 3, an upper sealing plug 5 is arranged at the upper end of the transparent tubes 2, an electromagnet 6 is arranged on the lower surface of the upper sealing plug 5, a bearing groove 7 is arranged in the middle of the lower surface of the electromagnet 6 and used for positioning a steel ball to the middle, go up still be provided with breather pipe 8 on the sealing plug 5 be provided with the valve on the breather pipe 8, the lower extreme and the hyaline tube 2 intercommunication of breather pipe 8, the upper end and the air pump of breather pipe 8 are connected to atmospheric pressure in adjusting the hyaline tube 2 be provided with two at least photogate 9 on the hyaline tube 2, photogate 9 is connected with timing device 10, timing device 10 sets up the upper surface at base 1 be provided with horizontal bubble 13 on the base 1 to be convenient for observe the levelness of base 1 equal threaded connection has adjusting stud 12 on four angles of base 1, so that adjust the levelness of base 1 the lower extreme fixedly connected with gasket 14 of adjusting stud 12 the upper end fixedly connected with knob 15 of adjusting stud 12.
The working principle is that the electromagnet 6 is controlled to be powered off by an external switch, and the two small steel balls freely fall off due to loss of magnetism; the time of two small steel balls passing through each photoelectric door 9 is recorded, the principle of free falling can be presented through the speed of the small steel balls at the photoelectric doors 9 at different positions, the distance between the adjacent photoelectric doors 9 and the time used by the different photoelectric doors 9, meanwhile, the motion states of free falling of the left small steel ball and the right small steel ball under different air pressures can be visually compared, and further the influence of the larger air pressure on the motion of the free falling of the small steel balls is further increased.
While there have been shown and described what are at present considered to be the essential features and advantages of the utility model, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. The utility model provides a modular two glass pipe free fall motion experiment appearance which characterized in that: comprises a base (1), at least two transparent tubes (2) are fixedly arranged on the upper surface of the base (1), a collecting channel (3) is arranged below the transparent tubes (2), the transparent tubes (2) are communicated with the collecting channel (3), the collecting channel (3) is arranged on the base (1), a lower sealing plug (4) is arranged at the outlet of the collecting channel (3), an upper sealing plug (5) is arranged at the upper end of the transparent tubes (2), an electromagnet (6) is arranged on the lower surface of the upper sealing plug (5), a bearing groove (7) is arranged in the middle of the lower surface of the electromagnet (6) and used for positioning a steel ball to the middle, a vent pipe (8) is further arranged on the upper sealing plug (5), a valve is arranged on the vent pipe (8), and the lower end of the vent pipe (8) is communicated with the transparent tubes (2), the upper end of breather pipe (8) is connected with the air pump to adjust the atmospheric pressure in hyaline tube (2) be provided with two at least photogate (9) on hyaline tube (2), photogate (9) are connected with timing device (10), timing device (10) set up the upper surface at base (1).
2. The combined double-glass tube free-fall motion experimental instrument according to claim 1, characterized in that: the transparent tube (2) is provided with height scales (11).
3. The combined double-glass tube free-fall motion experimental instrument according to claim 1, characterized in that: the transparent tube (2) is a plastic tube to prevent the transparent tube (2) from being broken due to the collision of the transparent tube (2) and the steel ball.
4. The combined double-glass tube free-fall motion experimental instrument according to claim 1, characterized in that: the collecting channel (3) is arranged in a downward inclined mode so as to be convenient for taking out the steel balls.
5. The combined double-glass tube free-fall motion experimental instrument according to claim 1, characterized in that: four angles of the base (1) are all in threaded connection with adjusting studs (12) so as to adjust the levelness of the base (1).
6. The combined double-glass tube free-fall motion experimental instrument according to claim 5, characterized in that: a horizontal bubble (13) is arranged on the base (1) so as to observe and adjust the levelness of the base (1).
7. The combined double-glass tube free-fall motion experimental instrument according to claim 5, characterized in that: and a gasket (14) is fixedly connected to the lower end of the adjusting stud (12).
8. The combined double-glass tube free-fall motion experimental instrument according to claim 5, characterized in that: the upper end of the adjusting stud (12) is fixedly connected with a knob (15).
9. The combined double-glass tube free-fall motion experimental instrument according to claim 1, characterized in that: a spongy cushion (16) is arranged in the collecting channel (3) to reduce the impact of the steel balls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120784401.6U CN215527014U (en) | 2021-04-16 | 2021-04-16 | Combined double-glass tube free falling body movement experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120784401.6U CN215527014U (en) | 2021-04-16 | 2021-04-16 | Combined double-glass tube free falling body movement experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215527014U true CN215527014U (en) | 2022-01-14 |
Family
ID=79802208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120784401.6U Expired - Fee Related CN215527014U (en) | 2021-04-16 | 2021-04-16 | Combined double-glass tube free falling body movement experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215527014U (en) |
-
2021
- 2021-04-16 CN CN202120784401.6U patent/CN215527014U/en not_active Expired - Fee Related
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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: 20220114 |