CN105261263A - Freefall motion experimental instrument - Google Patents
Freefall motion experimental instrument Download PDFInfo
- Publication number
- CN105261263A CN105261263A CN201510807258.7A CN201510807258A CN105261263A CN 105261263 A CN105261263 A CN 105261263A CN 201510807258 A CN201510807258 A CN 201510807258A CN 105261263 A CN105261263 A CN 105261263A
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- CN
- China
- Prior art keywords
- glass tube
- vacuum
- base
- tube
- vacuum glass
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/10—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of solid bodies
Abstract
The invention discloses a freefall motion experimental instrument and relates to the technological field of experimental instruments of college physics. A vacuum glass tube is arranged on a base through a glass tube protection sleeve; the verticality of the vacuum glass tube can be adjusted through a base screw on the base; the bottom of the vacuum glass tube is provided with a cushion; a small steel ball is arranged in the vacuum glass tube; the upper end of the vacuum glass tube is packaged by a seal plug; an air suction tube and an excitation iron core are arranged on the sealing plug through curing; the air suction tube is provided with a gas valve; one end of the gas valve is connected with a vacuum pump through a connector and a gas transfer tube; the upper end of the excitation iron core is wound with an excitation coil; the excitation coil is connected with a main controller through an excitation wire; the outer surface of the vacuum glass tube is provided with an upper photogate and a lower photogate; the upper photogate and the lower photogate are connected with the main controller through photoelectric signal transmission lines; and the controller includes a time record display module and an excitation current control module. With the freefall motion experimental instrument of the invention adopted, high vacuum degree can be realized in the vacuum glass tube, and the movement time of the small steel ball can be measured with high precision, and therefore, experiment results can be ideal.
Description
Technical field
The present invention relates to movement of falling object experiment instrument, belong to Experiment of College Physics Instrument technology field.
Background technology
Measurement acceleration of gravity is an elementary item in Physical Experiment, a variety of method is had to record acceleration of gravity, and Constructional Elements Using Falling Methods measuring gravity acceleration is the most direct and simple method in all methods, can as the experimental project of in Physical Experiments, also can be used as an experimental project in middle school physical experiment, the gordian technique of Constructional Elements Using Falling Methods measuring gravity acceleration test how to manufacture vacuum environment.
Summary of the invention
For the problems referred to above, the technical problem to be solved in the present invention is to provide a kind of Constructional Elements Using Falling Methods measuring gravity acceleration test instrument of high accurancy and precision.
Movement of falling object experiment instrument of the present invention, it comprises glass tube with vacuum, sealing-plug, cushion pad, field core, field coil, magnetic excitation wires, small ball, exhaust tube, air valve, connector, gas piping, vacuum pump, glazing electric switch, lower photoelectricity door, photosignal transmission line, master controller, release key, display screen, base, base screw, glass tube protector; Glass tube with vacuum is placed on base by glass tube protector, and the base screw on base regulates the verticality of glass tube with vacuum; Have cushion pad bottom glass tube with vacuum, be inside placed with small ball, upper end is encapsulated by sealing-plug; Sealing-plug is solidified with exhaust tube and field core, and exhaust tube has air valve, and air valve other end is connected to vacuum pump by connector and gas piping; Field core upper end is wound with field coil, and field coil is connected to master controller by magnetic excitation wires; Vacuum glass tube outer surface has glazing electric switch and lower photoelectricity door, glazing electric switch and lower photoelectricity door are connected to master controller by photosignal transmission line, and controller is containing free record display module and exciting current control module.
As preferably, described cushion pad adopts the low-density sponge of thickness appropriateness.
As preferably, described magnetic excitation wires and photosignal line adopt more soft wire.
As preferably, described exhaust tube, air valve, connector, gas piping adopt copper material.
Beneficial effect of the present invention is: can reach higher vacuum tightness in glass tube with vacuum, and small ball run duration can realize the higher measurement of precision, thus makes Comparison of experiment results desirable.
Accompanying drawing explanation
For ease of illustrating, the present invention is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is structural representation of the present invention.
In figure: 1-glass tube with vacuum, 2-sealing-plug, 3-cushion pad, 4-field core, 5-field coil, 6-magnetic excitation wires, 7-small ball, 8-exhaust tube, 9-air valve, 10-connector, 11 gas pipings-, photoelectricity door, 15-photosignal transmission line, 16-master controller, 17-release key, 18-display screen, 19-base, 20-base screw, 21-glass tube protector under 12-vacuum pump, 13-glazing electric switch, 14-.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, below by the specific embodiment shown in accompanying drawing, the present invention is described; But should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention; In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
As shown in Figure 1, this embodiment by the following technical solutions: it comprises glass tube with vacuum 1, sealing-plug 2, cushion pad 3, field core 4, field coil 5, magnetic excitation wires 6, small ball 7, exhaust tube 8, air valve 9, connector 10, gas piping 11, vacuum pump 12, glazing electric switch 13, lower photoelectricity door 14, photosignal transmission line 15, master controller 16, release key 17, display screen 18, base 19, base screw 20, glass tube protector 21; Glass tube with vacuum 1 is placed on base 19 by glass tube protector 21, and the base screw 20 on base 19 regulates the verticality of glass tube with vacuum 1; Have cushion pad 3 bottom glass tube with vacuum 1, be inside placed with small ball 7, upper end is encapsulated by sealing-plug 2; Sealing-plug 2 is solidified with exhaust tube 8 and field core 4, exhaust tube 8 has air valve 9, and air valve 9 other end is connected to vacuum pump 12 by connector 10 and gas piping 11; Field core 4 upper end is wound with field coil 5, and field coil 5 is connected to master controller 16 by magnetic excitation wires 6; Glass tube with vacuum 1 outside surface has glazing electric switch 13 and lower photoelectricity door 14, glazing electric switch 13 and lower photoelectricity door 14 are connected to master controller 16 by photosignal transmission line 15, and controller 16 is containing free record display module and exciting current control module.
Further, described cushion pad 3 adopts the low-density sponge of thickness appropriateness.
Further, described magnetic excitation wires 6 and photosignal line 15 adopt more soft wire.
Further, described exhaust tube 8, air valve 9, connector 10, gas piping 11 adopt copper material.
The principle of work of this embodiment is: glass tube with vacuum 1 is vacuumized by vacuum pump 12, because exhaust tube 8 and gas piping 11 adopt copper pipe, vacuumize middle pipeline to block because pressing partially, so very high vacuum tightness can be reached, after having vacuumized, remove the vacuum pump 12 of gas piping 11 at connector 10 place, glass tube with vacuum 1 can be stood upside down and make small ball 7 get back to summit and to be controlled by field core 4 and static, glass tube with vacuum 1 reply upright after press release key 17 on master controller 16, small ball 7 is released because of field core 4 loss of excitation, design accurate small ball 7 static Shi Qi center to the Distance geometry at glazing electric switch 13 center to the distance at lower photoelectricity door 14 center, master controller 16 time interocclusal record display module energy accurate recording small ball 7 center time in the heart in glazing electric switch 13 center and lower photoelectricity door 14, Time Calculation goes out acceleration of gravity and compares with local gravitational acceleration thus, cushion pad 3 adopts the low-density sponge of thickness appropriateness not broken by small ball 7 to protect glass tube with vacuum 1, magnetic excitation wires 6 and photosignal line 15 adopt more soft wire to reverse to facilitate glass tube with vacuum 1.
More than show and describe ultimate principle of the present invention, principal character and advantage of the present invention; the technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. movement of falling object experiment instrument, it is characterized in that: it comprises glass tube with vacuum (1), sealing-plug (2), cushion pad (3), field core (4), field coil (5), magnetic excitation wires (6), small ball (7), exhaust tube (8), air valve (9), connector (10), gas piping (11), vacuum pump (12), glazing electric switch (13), lower photoelectricity door (14), photosignal transmission line (15), master controller (16), release key (17), display screen (18), base (19), base screw (20), glass tube protector (21), glass tube with vacuum (1) is placed on base (19) by glass tube protector (21), and the base screw (20) on base (19) regulates the verticality of glass tube with vacuum (1), cushion pad (3) is arranged at glass tube with vacuum (1) bottom, and be inside placed with small ball (7), upper end is encapsulated by sealing-plug (2), sealing-plug (2) is solidified with exhaust tube (8) and field core (4), exhaust tube (8) has air valve (9), air valve (9) other end is connected to vacuum pump (12) by connector (10) and gas piping (11), field core (4) upper end is wound with field coil (5), and field coil (5) is connected to master controller (16) by magnetic excitation wires (6), glass tube with vacuum (1) outside surface there are glazing electric switch (13) and lower photoelectricity door (14), glazing electric switch (13) and lower photoelectricity door (14) are connected to master controller (16) by photosignal transmission line (15), and controller (16) is containing free record display module and exciting current control module.
2. movement of falling object experiment instrument according to claim 1, is characterized in that: described cushion pad (3) adopts the low-density sponge of thickness appropriateness.
3. movement of falling object experiment instrument according to claim 1, is characterized in that: described magnetic excitation wires (6) and photosignal line (15) adopt more soft wire.
4. movement of falling object experiment instrument according to claim 1, is characterized in that: described exhaust tube (8), air valve (9), connector (10), gas piping (11) adopt copper material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807258.7A CN105261263A (en) | 2015-11-22 | 2015-11-22 | Freefall motion experimental instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510807258.7A CN105261263A (en) | 2015-11-22 | 2015-11-22 | Freefall motion experimental instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105261263A true CN105261263A (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510807258.7A Pending CN105261263A (en) | 2015-11-22 | 2015-11-22 | Freefall motion experimental instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105261263A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652680A (en) * | 2017-03-09 | 2017-05-10 | 韩晨希 | Portable freefall experiment instrument |
| CN107067902A (en) * | 2017-07-04 | 2017-08-18 | 张蕴喆 | Physics experiments of high school Multipurpose teaching device |
| CN108269467A (en) * | 2018-03-14 | 2018-07-10 | 方浩然 | A kind of experiment with falling objects apparatus for demonstrating |
| CN109461352A (en) * | 2018-12-21 | 2019-03-12 | 刘家铮 | A kind of high school physics experiment with falling objects simulator |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299305A (en) * | 2008-05-21 | 2008-11-05 | 冯建光 | Demonstration apparatus for measuring weight self-change |
| CN101984038A (en) * | 2010-09-10 | 2011-03-09 | 北京航空航天大学 | Pneumatic micro-operation device for tiny organisms |
| WO2012119553A1 (en) * | 2011-03-08 | 2012-09-13 | Chen Yihua | Electromagnetic pushing and knocking type object detector |
| CN203165296U (en) * | 2013-03-11 | 2013-08-28 | 湖州师范学院 | Free-fall motion experiment device |
| CN204045082U (en) * | 2014-08-18 | 2014-12-24 | 郑州学生宝电子科技有限公司 | Acceleration of gravity experiment teaching aid in a kind of physics teaching |
| CN204516173U (en) * | 2015-03-23 | 2015-07-29 | 陈文卓 | Acceleration of gravity experiment teaching aid |
| CN104966438A (en) * | 2015-07-31 | 2015-10-07 | 湖南城市学院 | Experimental instrument measuring gravitational acceleration through falling body method |
-
2015
- 2015-11-22 CN CN201510807258.7A patent/CN105261263A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101299305A (en) * | 2008-05-21 | 2008-11-05 | 冯建光 | Demonstration apparatus for measuring weight self-change |
| CN101984038A (en) * | 2010-09-10 | 2011-03-09 | 北京航空航天大学 | Pneumatic micro-operation device for tiny organisms |
| WO2012119553A1 (en) * | 2011-03-08 | 2012-09-13 | Chen Yihua | Electromagnetic pushing and knocking type object detector |
| CN203165296U (en) * | 2013-03-11 | 2013-08-28 | 湖州师范学院 | Free-fall motion experiment device |
| CN204045082U (en) * | 2014-08-18 | 2014-12-24 | 郑州学生宝电子科技有限公司 | Acceleration of gravity experiment teaching aid in a kind of physics teaching |
| CN204516173U (en) * | 2015-03-23 | 2015-07-29 | 陈文卓 | Acceleration of gravity experiment teaching aid |
| CN104966438A (en) * | 2015-07-31 | 2015-10-07 | 湖南城市学院 | Experimental instrument measuring gravitational acceleration through falling body method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106652680A (en) * | 2017-03-09 | 2017-05-10 | 韩晨希 | Portable freefall experiment instrument |
| CN107067902A (en) * | 2017-07-04 | 2017-08-18 | 张蕴喆 | Physics experiments of high school Multipurpose teaching device |
| CN108269467A (en) * | 2018-03-14 | 2018-07-10 | 方浩然 | A kind of experiment with falling objects apparatus for demonstrating |
| CN109461352A (en) * | 2018-12-21 | 2019-03-12 | 刘家铮 | A kind of high school physics experiment with falling objects simulator |
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Application publication date: 20160120 |
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