Physical experiment instrument rack for students
By designing a physical experiment instrument rack for students that includes a screw, a movable ring and a transmission rod, the problem of the lack of equipment to verify the internal energy changes of gas compression in the existing technology is solved, and students can conveniently verify the internal energy temperature after gas pressure compression. Changes have improved teaching effectiveness.
Patent Information
- Application Number
- CN202421137013.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-01-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the prior art, there is a lack of physical experimental verification equipment that verifies that the temperature in the gas can increase when compressed gas is used for work, resulting in students only remembering this theorem through rote memory, which has poor teaching effect.
A physical experimental instrument frame is designed, including the bottom plate, the column, the top plate, and the experimental agencies used for physical experiments. Experimental agencies include screw, activity ring, sliding, slider, experimental group, the first control group, and the second control group. Through the cooperation of screws and transmission rods, the air inside the fixed pipes in multiple groups can be compressed at the same time.
This device can facilitate students to verify the internal energy temperature changes after air pressure compression and improve the teaching effect. By rotating the screw drive activity ring, push the piston to move in the fixed pipe, compress the air, and observe the temperature change.
Smart Images
Figure CN222384865U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of experimental instrument racks, in particular to a physical experimental instrument rack for students. Background Art
[0002] Experimental instruments are frequently used equipment in physics teaching. Common physics experiments include electrical experiments, physics experiments, mechanics experiments, etc.
[0003] In the prior art, there is the following physical law: when work is done on a gas to compress it, the internal energy of the gas increases and the temperature gradually rises. However, in the prior art, there is a lack of such physical experiment verification equipment, and students can only remember this theorem by rote memorization, and the teaching effect is poor. Therefore, in order to solve the above problem, a physical experiment instrument stand for students needs to be improved. Utility Model Content
[0004] The purpose of the utility model is to provide a physical experiment instrument stand for students to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a physical experiment instrument stand for students, comprising a base plate, a column is fixedly arranged on the upper surface of the base plate, a top plate is fixedly arranged on the upper end of the column, an experimental mechanism for physical experiments is arranged between the base plate and the top plate, the experimental mechanism comprises a screw, a movable ring, a slide groove, a slider, an experimental group, a first control group, and a second control group, a screw is movably arranged between the base plate and the top plate through a bearing, a movable ring is movably screwed on the outer surface of the screw through a thread, a slide groove is provided on the outer surface of the upper end of the base plate, a slider is movably engaged inside the slide groove, an experimental group is arranged on one side of the upper end of the base plate, a first control group is arranged on one side of the experimental group at the upper end of the base plate, and a second control group is fixedly arranged on the other side of the upper end of the experimental group at the upper end of the base plate.
[0006] Preferably, the experimental group includes a first fixed tube, a first piston, a first sealing cover, a first temperature detection probe, and a first thermometer; the first fixed tube is fixedly provided on one side of the upper end of the base plate; the first piston is movably engaged inside the first fixed tube; the first piston is fixedly connected to the slider; a first sealing cover is movably screwed on one side of the surface of the first fixed tube through a thread; a first temperature detection probe is fixedly provided on the middle part of the inner side of the first sealing cover; a first thermometer is fixedly provided on the upper end of the first fixed tube; the first thermometer and the first temperature detection probe are electrically connected; the experimental group can be used to verify the change of internal energy after air pressure compression.
[0007] Preferably, a first transmission rod is movably arranged between the slider where the first piston is located and the movable ring via a rotating shaft; the first transmission rod can push the first piston to move inside the first fixed tube when the movable ring moves downward.
[0008] Preferably, the first control group includes a second fixed tube, a second piston, a second temperature detection probe, and a second thermometer; the second fixed tube is fixedly provided on one side of the first fixed tube at the upper end of the bottom plate; a second piston is movably provided inside the second fixed tube; the second piston is fixedly connected to the slider; a second temperature detection probe is provided on one side of the second fixed tube; a second thermometer is fixedly provided on the upper end of the second fixed tube; the second thermometer and the second temperature detection probe are electrically connected; the first control group can be used as a control experiment to verify the change of internal energy after air pressure compression.
[0009] Preferably, a second transmission rod is movably provided between the slider where the second piston is located and the movable ring via a rotating shaft; the second transmission rod can push the second piston to move inside the second fixed tube when the movable ring moves downward.
[0010] Preferably, the second alignment group includes a third fixed tube, a third piston, a second sealing cover, a third temperature detection probe, and a third thermometer; a third fixed tube is fixedly provided on one side of the upper end of the bottom plate, a third piston is movably engaged inside the third fixed tube, the third piston is fixedly connected to the slider, a second sealing cover is movably screwed on one side of the surface of the third fixed tube through a thread, a third temperature detection probe is fixedly provided on the middle part of the inner side of the second sealing cover, a third thermometer is fixedly provided on the upper end of the third fixed tube, and the third thermometer is electrically connected to the third temperature detection probe; the second control group is similarly used as a control experiment to verify the change of internal energy after air pressure compression.
[0011] Compared with the prior art, the beneficial effects of the utility model are:
[0012] 1. The utility model can squeeze multiple experimental groups at the same time to verify the internal energy experiment of air pressure compression, which is convenient for students to understand the change of internal energy temperature after air pressure compression, thereby improving the teaching effect.
[0013] 2. During the experiment of the utility model, the screw is rotated, and the screw rotation can drive the movable ring to move downward through the thread. When the movable ring moves downward, the first transmission rod and the second transmission rod can push the first piston and the second piston to move toward the direction close to the temperature detection probe; thereby, the air inside the fixed tubes in multiple experimental groups can be compressed at the same time, which is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1This is a schematic diagram of the overall structure of a physical experiment instrument stand for students in the utility model;
[0015] Figure 2 This is a side view of a physical experiment instrument stand for students of the utility model;
[0016] Figure 3 This is a cross-sectional view of a physical experiment instrument stand for students of the utility model;
[0017] Figure 4 The utility model is a physical experiment instrument stand for students Figure 3 Magnified view at A in the middle.
[0018] In the figure: 1. bottom plate; 2. column; 3. top plate; 4. screw; 5. movable ring; 6. slide groove; 7. slider; 8. first fixed tube; 9. first piston; 10. first sealing cover; 11. first temperature detection probe; 12. first thermometer; 13. first transmission rod; 14. second fixed tube; 15. second piston; 16. second temperature detection probe; 17. second thermometer; 18. second transmission rod; 19. third fixed tube; 20. third piston; 21. second sealing cover; 22. third temperature detection probe; 23. third thermometer. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-4 The utility model provides a technical solution: a physical experiment instrument stand for students, comprising a bottom plate 1, a column 2 is fixedly arranged on the upper end surface of the bottom plate 1, a top plate 3 is fixedly arranged on the upper end of the column 2, an experimental mechanism for physical experiments is arranged between the bottom plate 1 and the top plate 3, and the experimental mechanism includes a screw 4, an active ring 5, a slide groove 6, a slider 7, an experimental group, a first control group, and a second control group. A screw 4 is movably arranged between the bottom plate 1 and the top plate 3 through a bearing, and a movable ring 5 is movably screwed on the outer surface of the screw 4 through a thread, a slide groove 6 is opened on the outer surface of the upper end of the bottom plate 1, and a slider 7 is movably engaged inside the slide groove 6, an experimental group is arranged on one side of the upper end of the bottom plate 1, a first control group is arranged on one side of the experimental group on the upper end of the bottom plate 1, and a second control group is fixedly arranged on the other side of the upper end of the experimental group on the upper end of the bottom plate 1.
[0021] The experimental group includes a first fixed tube 8, a first piston 9, a first sealing cover 10, a first temperature detection probe 11, and a first thermometer 12. The first fixed tube 8 is fixedly arranged on one side of the upper end of the bottom plate 1. The first piston 9 is movably engaged inside the first fixed tube 8. The first piston 9 is fixedly connected to the slider 7. The first sealing cover 10 is movably screwed on one side of the surface of the first fixed tube 8 through a thread. The first temperature detection probe 11 is fixedly arranged in the middle of the inner side of the first sealing cover 10. The first thermometer 12 is fixedly arranged on the upper end of the first fixed tube 8. The first thermometer 12 is electrically connected to the first temperature detection probe 11. The experimental group can be used to verify the change of internal energy after air pressure compression.
[0022] A first transmission rod 13 is movably provided between the slider 7 where the first piston 9 is located and the movable ring 5 via a rotating shaft; the first transmission rod 13 can push the first piston 9 to move inside the first fixed tube when the movable ring 5 moves downward;
[0023] The first control group includes a second fixed tube 14, a second piston 15, a second temperature detection probe 16, and a second thermometer 17. The second fixed tube 14 is fixedly arranged on the upper end of the bottom plate 1 at one side of the first fixed tube 8. The second piston 15 is movably engaged inside the second fixed tube 14. The second piston 15 is fixedly connected to the slider 7. The second temperature detection probe 16 is arranged on one side of the second fixed tube 14. The second thermometer 17 is fixedly arranged on the upper end of the second fixed tube 14. The second thermometer 17 is electrically connected to the second temperature detection probe 16. The first control group can be used as a control experiment to verify the change of internal energy after air pressure compression.
[0024] A second transmission rod 18 is movably provided between the slider 7 where the second piston 15 is located and the movable ring 5 via a rotating shaft; the second transmission rod 18 can push the second piston 15 to move inside the second fixed tube when the movable ring 5 moves downward;
[0025] The second alignment group includes a third fixed tube 19, a third piston 20, a second sealing cover 21, a third temperature detection probe 22, and a third thermometer 23; a third fixed tube 19 is fixedly provided on one side of the upper end of the base plate 1, a third piston 20 is movably engaged inside the third fixed tube 19, the third piston 20 is fixedly connected to the slider 7, a second sealing cover 21 is movably screwed on one side of the surface of the third fixed tube 19 through a thread, a third temperature detection probe 22 is fixedly provided on the middle part of the inner side of the second sealing cover 21, a third thermometer 23 is fixedly provided on the upper end of the third fixed tube 19, and the third thermometer 23 is electrically connected to the third temperature detection probe 22; the second control group is also used as a control experiment to verify the change of internal energy after air pressure compression.
[0026] Working principle: When using this device, the physical experiment of this device is divided into three groups: experimental group, first control group, and second control group;
[0027] During the experiment, the screw rod 4 is rotated, and the screw rod 4 can drive the movable ring 5 to move downward through the thread. When the movable ring 5 moves downward, the first transmission rod 13 and the second transmission rod 18 can push the first piston 9 and the second piston 15 to move toward the temperature detection probe; thereby, the air inside the fixed tubes in multiple experimental groups can be compressed at the same time, which is more convenient to operate; and after the air inside the fixed tubes is compressed, the multiple experimental groups will undergo the following changes;
[0028] For the experimental group; the first piston 9 will compress the air inside the first fixed tube 8. At this time, a sealing cover is provided on the surface of the first fixed tube 8. As the first piston 9 moves and cooperates with the sealing cover, the air inside the first fixed tube 8 will be compressed. At this time, the internal energy of the compressed air increases, and the temperature displayed by the first thermometer 12 should rise.
[0029] For the first alignment group: the movement of the second piston 15 does not have a sealing cover, so the air inside the first fixed tube 8 cannot be compressed and has no compression effect; at this time, the temperature displayed by the second temperature gauge 17 should remain unchanged;
[0030] For the second alignment group: since there is no transmission, the third piston 20 does not move, and the third piston 20 does not do work on the air inside the third fixed tube 19; at this time, the temperature displayed by the third temperature gauge 23 should remain unchanged;
[0031] In summary, when an external force does work on the air and the air is compressed, its internal energy should rise and its temperature should rise. This will help students understand the changes in internal energy and temperature after air pressure compression, thereby improving teaching effectiveness.
[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A physical experiment instrument stand for students, comprising a bottom plate (1), characterized in that: A column (2) is fixedly arranged on the upper end surface of the bottom plate (1), and a top plate (3) is fixedly arranged on the upper end of the column (2). An experimental mechanism for physical experiments is arranged between the bottom plate (1) and the top plate (3), and the experimental mechanism comprises a screw (4), a movable ring (5), a slide groove (6), a slider (7), an experimental group, a first control group, and a second control group. A screw (4) is movably arranged between the bottom plate (1) and the top plate (3) via a bearing, and a movable ring (5) is movably screwed on the outer surface of the screw (4) via a thread. A slide groove (6) is provided on the outer surface of the upper end of the bottom plate (1), and a slider (7) is movably engaged inside the slide groove (6). An experimental group is arranged on one side of the upper end of the bottom plate (1), and a first control group is arranged on one side of the upper end of the bottom plate (1), and a second control group is fixedly arranged on the other side of the upper end of the experimental group.
2. A physical experiment instrument stand for students according to claim 1, characterized in that: The experimental group comprises a first fixed tube (8), a first piston (9), a first sealing cover (10), a first temperature detection probe (11), and a first thermometer (12); the first fixed tube (8) is fixedly arranged on one side of the upper end of the bottom plate (1); the first piston (9) is movably engaged inside the first fixed tube (8); the first piston (9) is fixedly connected to the slider (7); the first sealing cover (10) is movably screwed on one side of the surface of the first fixed tube (8) through a thread; the first temperature detection probe (11) is fixedly arranged in the middle of the inner side of the first sealing cover (10); the first thermometer (12) is fixedly arranged on the upper end of the first fixed tube (8); the first thermometer (12) and the first temperature detection probe (11) are electrically connected.
3. A physical experiment instrument stand for students according to claim 2, characterized in that: A first transmission rod (13) is movably arranged between the slider (7) where the first piston (9) is located and the movable ring (5) via a rotating shaft.
4. A physical experiment instrument stand for students according to claim 1, characterized in that: The first control group comprises a second fixed tube (14), a second piston (15), a second temperature detection probe (16), and a second thermometer (17); the second fixed tube (14) is fixedly arranged on one side of the first fixed tube (8) at the upper end of the bottom plate (1); a second piston (15) is movably arranged inside the second fixed tube (14); the second piston (15) is fixedly connected to the slider (7); a second temperature detection probe (16) is arranged on one side of the second fixed tube (14); a second thermometer (17) is fixedly arranged on the upper end of the second fixed tube (14); and the second thermometer (17) and the second temperature detection probe (16) are electrically connected.
5. A physical experiment instrument stand for students according to claim 4, characterized in that: A second transmission rod (18) is movably arranged between the slider (7) where the second piston (15) is located and the movable ring (5) via a rotating shaft.
6. The physical experiment instrument stand for students according to claim 1, characterized in that: The second alignment group comprises a third fixed tube (19), a third piston (20), a second sealing cover (21), a third temperature detection probe (22), and a third temperature gauge (23); the third fixed tube (19) is fixedly arranged on one side of the upper end of the base plate (1), a third piston (20) is movably engaged inside the third fixed tube (19), the third piston (20) is fixedly connected to the slider (7), a second sealing cover (21) is movably screwed on one side of the surface of the third fixed tube (19) through a thread, a third temperature detection probe (22) is fixedly arranged in the middle of the inner side of the second sealing cover (21), a third temperature gauge (23) is fixedly arranged on the upper end of the third fixed tube (19), and the third temperature gauge (23) is electrically connected to the third temperature detection probe (22).