CN209895621U

CN209895621U - Mechanics presentation device based on physics experiment

Info

Publication number: CN209895621U
Application number: CN201920307863.1U
Authority: CN
Inventors: 陈海龙; 李燕
Original assignee: Xianyang Vocational Technical College
Current assignee: Xianyang Vocational Technical College
Priority date: 2019-03-12
Filing date: 2019-03-12
Publication date: 2020-01-03
Anticipated expiration: 2029-03-12

Abstract

The utility model discloses a mechanics demonstration device based on physical experiment, a timing component is arranged on one side of the top surface of an experiment board, a movable block is inlaid on the top end of an installation hole, the bottom end of an installation pipe is connected with a code table through screw threads, the experiment component is arranged on the top surface of the experiment board, a magnetic stripe is bonded on one side inside a chute, round magnets are evenly arranged on two sides of a trolley, a supporting component is hinged on one side of the bottom end of the experiment board, a limit groove is arranged on the top surface of a bottom board, a sliding plate is inlaid in the limit groove, and a rubber supporting board is hinged on the top end of the movable pipe. And by obtaining multiple groups of data, the accuracy of the experiment is improved.

Description

Mechanics presentation device based on physics experiment

Technical Field

The utility model relates to a physics experiment teaching instrument technical field specifically is a mechanics presentation device based on physics experiment.

Background

Mechanics is the very important part in the physics discipline, relates to than wide, demonstrates often through a lot of experiments in the teaching of reality, lets the student understand deeply, for the ease of teaching to and make the student understand more easily, can use corresponding presentation device to demonstrate usually, in mechanics physics experiment, has an experiment that utilizes the dolly demonstration acceleration of motion.

However, the mechanical demonstration device for the current physical experiment usually utilizes a stopwatch to time when demonstrating, but the manual timing error is large, the experimental result is inaccurate, the object is greatly influenced by friction force when moving, and the friction force is difficult to eliminate, the adjustment is inconvenient, the experimental result data is insufficient, and the effect is not good.

SUMMERY OF THE UTILITY MODEL

The utility model provides a mechanics presentation device based on physics experiment can effectively solve the mechanics presentation device that proposes in the above-mentioned background art, when demonstrating, can utilize the code table to time usually, but the manual work time error is great, and the experimental result is inaccurate, and when the object removed, it is great to receive the frictional force influence, and is difficult to eliminate, and the adjustment is inconvenient, and experimental result data is not enough, the not good problem of effect.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a mechanics presentation device based on physics experiment, includes the experiment board, experiment board top surface one side is provided with the timing subassembly, the timing subassembly includes mounting hole, movable block, installation pipe, spring, ejector pin, stopwatch and timing button, the mounting hole is seted up in experiment board top surface one side, the mounting hole top is inlayed and is had the movable block, there is the installation pipe mounting hole bottom through threaded connection, install the spring between installation pipe top and the movable block bottom, installation pipe internally mounted has the ejector pin, there is the stopwatch installation pipe bottom through threaded connection, stopwatch top middle part is located ejector pin bottom department and installs the timing button.

Preferably, the diameter of the mounting hole is the same as that of the movable block.

Preferably, the included angle between the top surface of the movable block and the horizontal plane is 45 degrees.

Preferably, limiting rings are embedded at two ends of the installation pipe.

Preferably, the experiment subassembly is installed to the experiment board top surface, the experiment subassembly includes spout, magnetic stripe, dolly, circle magnet, scale, fixed pulley, weight box and counter weight magnet, two the spout is seted up respectively in experiment board top surface both sides, the inside one side of spout bonds there is the magnetic stripe, the dolly is installed on the spout top, circle magnet is evenly installed to the dolly both sides, inlay at experiment board top surface middle part has the scale, the fixed pulley is installed to experiment board top surface one end, dolly one end is connected with the weight box through the string, weight box bottom adsorbs there is counter weight magnet.

Preferably, a ruler groove is formed in the position, close to the graduated scale, of the top surface of the experiment board, and the graduated scale is embedded in the ruler groove.

Preferably, laboratory sheet bottom one side articulates there is the supporting component, the supporting component includes bottom plate, spacing groove, slide, bracing piece, activity pipe and rubber layer board, bottom plate one end articulates in laboratory sheet one end, the spacing groove has been seted up to the bottom plate top surface, limiting groove inside inlays and has the slide, the bracing piece is installed on the slide top, the activity pipe has been cup jointed on the bracing piece top, the activity pipe top articulates there is rubber layer board.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization:

1. be provided with the timing subassembly, press the movable block when putting down the weight box, can strike the movable block when the dolly reachs the laboratory glassware top, promote the ejector pin through the movable block, utilize the ejector pin to press the timing button, reach the purpose of timing, compare in manual operation, the timing is more accurate rapidly.

2. Be provided with the experiment subassembly, the magnetic pole that the magnetic stripe is the same with the circle magnet contact surface that acts as the wheel, can not contact each other under the repulsion effect, has reduced frictional resistance when guaranteeing that the dolly removes along the spout, has improved the accuracy of experiment.

3. Be provided with supporting component, contained angle between accessible supporting component adjustment experiment board and the bottom plate freely adjusts the dolly and receives the pulling force, and the adjustment is convenient, through reacing multiunit data, improves the accuracy of experiment.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the timing assembly of the present invention;

FIG. 3 is a schematic structural diagram of the experimental assembly of the present invention;

fig. 4 is a schematic structural view of the support assembly of the present invention;

reference numbers in the figures: 1. an experimental plate;

2. a timing assembly; 201. mounting holes; 202. a movable block; 203. installing a pipe; 204. a spring; 205. a top rod; 206. code table; 207. a timing button;

3. an experimental component; 301. a chute; 302. a magnetic strip; 303. a trolley; 304. a round magnet; 305. a graduated scale; 306. a fixed pulley; 307. a weight box; 308. a counterweight magnet;

4. a support assembly; 401. a base plate; 402. a limiting groove; 403. a slide plate; 404. a support bar; 405. a movable tube; 406. a rubber supporting plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-4, the utility model provides a technical solution, a mechanics demonstration device based on physical experiment, including an experimental plate 1, a timing assembly 2 is arranged on one side of the top surface of the experimental plate 1, the timing assembly 2 includes a mounting hole 201, a movable block 202, a mounting tube 203, a spring 204, a mandril 205, a stopwatch 206 and a timing button 207, the mounting hole 201 is arranged on one side of the top surface of the experimental plate 1, the movable block 202 is embedded on the top end of the mounting hole 201, for the convenience of moving the movable block 202 in the mounting hole 201, the diameter of the mounting hole 201 is the same as that of the movable block 202, for the prevention of the movable block 202 moving when the inclined plane is impacted, the included angle between the top surface of the movable block 202 and the horizontal plane is 45 degrees, the bottom end of the mounting hole 201 is connected with the mounting tube 203 through a thread, the spring 204 is arranged between the top end of the mounting, the spacing ring has all been inlayed at installation pipe 203 both ends, and there is yard table 206 at installation pipe 203 bottom through threaded connection, and the timing button 207 is installed to the department that is located ejector pin 205 bottom in the middle part of yard table 206 top.

Experiment subassembly 3 is installed on 1 top surface of laboratory sheet, experiment subassembly 3 includes spout 301, magnetic stripe 302, dolly 303, circle magnet 304, scale 305, fixed pulley 306, weight box 307 and

counter weight magnet

308, 1 top surface both sides of laboratory sheet are seted up respectively to two spout 301, spout 301 inside one side bonds there is magnetic stripe 302, dolly 303 is installed on spout 301 top, circle magnet 304 is evenly installed to dolly 303 both sides, 1 top surface mid-mounting of laboratory sheet has scale 305, for the ease of installing

scale

305, 1 top surface of laboratory sheet is close to scale 305 department and has seted up the chi groove, scale 305 inlays in the chi inslot, fixed pulley 306 is installed to 1 top surface one end of laboratory sheet, dolly 303 one end is connected with weight box 307 through the string, weight box 307 bottom adsorbs there is counter weight magnet 308.

1 bottom one side of laboratory sheet articulates there is supporting component 4, supporting component 4 includes bottom plate 401, spacing groove 402, slide 403, bracing piece 404, movable tube 405 and rubber layer board 406, and bottom plate 401 one end articulates in 1 one end of laboratory sheet, and spacing groove 402 has been seted up to bottom plate 401 top surface, and spacing groove 402 is inside to be inlayed and to have slide 403, and bracing piece 404 is installed on slide 403 top, and bracing piece 404 top has cup jointed movable tube 405, and the articulated rubber layer board 406 in movable tube 405 top has.

The utility model discloses a theory of operation and use flow: the utility model relates to a mechanics presentation device based on physical experiment, pulling movable tube 405, the length that adjustment bracing piece 404 stretches out, move slide 403 in spacing groove 402, adjustment rubber layer board 406 supports the position of laboratory panel 1, adjustment laboratory panel 1 and bottom plate 401 contained angle, put dolly 303 on spout 301 top, round magnet 304 that acts as the wheel inlays in spout 301, because the face magnetic pole that round magnet 304 and magnetic stripe 302 contact is the same, can not contact each other under the repulsion effect, adsorb counter weight magnet 308 balancing friction force at weight box 307 bottom, in the experimental process, there is the clearance between round magnet 304 and magnetic stripe 302, when guaranteeing that dolly 303 moves along spout 301, reduce frictional resistance between them, balancing friction force is simpler, reduce the influence of friction force to the experiment, a hand holds weight box 307 of putting the weight, a hand is put on the top of movable block 202, the weight box 307 is loosened, the movable block 202 is pressed while the weight box freely falls down, the movable block 202 moves downwards, the ejector rod 205 is impacted, the timing button 207 is pressed, the stopwatch 206 starts timing, then the spring 204 returns to the original state, the movable block 202 is jacked up, the movable block 202 is impacted when the trolley 303 reaches the top end of the experiment board 1, the ejector rod 205 is pushed through the movable block 202, the timing button 207 is pressed by the ejector rod 205, the purpose of timing is achieved, timing is quicker and more accurate compared with manual operation, then the supporting component 4 is adjusted, a comparison experiment is carried out, and the accuracy of the experiment is improved by obtaining multiple groups of data.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a mechanics presentation device based on physics experiment, includes laboratory glassware (1), its characterized in that: experiment board (1) top surface one side is provided with timing subassembly (2), timing subassembly (2) are including mounting hole (201), movable block (202), installation pipe (203), spring (204), ejector pin (205), stopwatch (206) and timing button (207), installation hole (201) are seted up in experiment board (1) top surface one side, mounting hole (201) top is inlayed and is had movable block (202), there is installation pipe (203) mounting hole (201) bottom through threaded connection, install spring (204) between installation pipe (203) top and movable block (202) bottom, installation pipe (203) internally mounted has ejector pin (205), there is stopwatch (206) mounting pipe (203) bottom through threaded connection, stopwatch (206) top middle part is located ejector pin (205) bottom department and installs timing button (207).

2. A mechanics demonstration device based on physical experiment according to claim 1 characterized in that the diameter of said mounting hole (201) is the same as the diameter of the movable block (202).

3. A mechanics demonstration device based on physics experiments according to claim 1 characterized in that the top surface of the movable block (202) is at an angle of 45 ° to the horizontal.

4. A mechanics demonstration device based on physics experiment, according to claim 1 characterized in that, both ends of the installation tube (203) are inlaid with spacing ring.

5. The mechanics demonstration device based on physical experiment according to claim 1, characterized in that the experiment board (1) is provided with an experiment component (3) on the top surface, the experiment component (3) comprises a sliding chute (301), a magnetic stripe (302), a trolley (303), a round magnet (304), a graduated scale (305), a fixed pulley (306), a weight box (307) and a counterweight magnet (308), the two sliding chutes (301) are respectively arranged on both sides of the top surface of the experiment board (1), the magnetic stripe (302) is bonded on one side inside the sliding chute (301), the trolley (303) is mounted on the top end of the sliding chute (301), the round magnets (304) are uniformly mounted on both sides of the trolley (303), the graduated scale (305) is embedded in the middle of the top surface of the experiment board (1), the fixed pulley (306) is mounted on one end of the top surface of the experiment board (1), one end of the trolley (303) is connected with the weight box (307) through, and a counterweight magnet (308) is adsorbed at the bottom end of the weight box (307).

6. The mechanics demonstration device based on physical experiment of claim 5 is characterized in that the top surface of the experiment board (1) near the graduated scale (305) is provided with a scale groove, and the graduated scale (305) is embedded in the scale groove.

7. The mechanics presentation device based on physical experiment of claim 1, characterized in that, experiment board (1) bottom one side articulates there is supporting component (4), supporting component (4) include bottom plate (401), spacing groove (402), slide (403), bracing piece (404), activity pipe (405) and rubber layer board (406), bottom plate (401) one end articulates in experiment board (1) one end, spacing groove (402) have been seted up to bottom plate (401) top surface, spacing groove (402) inside is inlayed and is had slide (403), bracing piece (404) are installed to slide (403) top, activity pipe (405) have been cup jointed to bracing piece (404) top, activity pipe (405) top articulates there is rubber layer board (406).