CN108269468B

CN108269468B - Physical mechanics display model

Info

Publication number: CN108269468B
Application number: CN201810060780.7A
Authority: CN
Inventors: 李艳华
Original assignee: Hulunbuir University
Current assignee: Hulunbuir University
Priority date: 2018-01-22
Filing date: 2018-01-22
Publication date: 2020-10-23
Anticipated expiration: 2038-01-22
Also published as: CN108269468A

Abstract

The invention discloses a physical mechanics display model, which comprises a base (1), wherein the base (1) is integrally of a square box-shaped structure, a turntable (2) is arranged at the upper top surface of the base, two demonstration grooves (3) are radially arranged at the upper top surface of the turntable (2), a positioning column (4) concentric with the turntable (2) is arranged between the two demonstration grooves (3), the bottom surfaces of the demonstration grooves (3) are designed in an inclined mode, the lowest point of the demonstration grooves is located at one end close to the positioning column (4), and positioning grooves (5) are formed in the side walls of the highest point and the adjacent side of each demonstration groove (3). The steel ball demonstration device is simple in structure, centrifugal force can be intuitively demonstrated by rotating the rotary turntable through the steel ball, the steel ball is convenient to demonstrate storage after the steel ball demonstration device is used, and the service life of the whole device is prolonged.

Description

Physical mechanics display model

Technical Field

The invention relates to the technical field related to teaching aids, in particular to a physical mechanics display model.

Background

The in-process of teaching at centrifugal force often need come the auxiliary teaching with the help of the teaching aid, and the most overall structure of current centrifugal force teaching aid model is comparatively simple, and holistic demonstration effect is relatively poor in the demonstration in-process of reality, and especially relevant accessory is more, accomodates unusual difficulty, in case a certain accessory appears omitting and will cause the unable condition that uses of whole model, has reduced holistic life.

Disclosure of Invention

The invention aims to provide a physical mechanics display model which can effectively solve the problems in the background technology.

In order to solve the problems existing in the background technology, the demonstration device comprises a base 1, wherein the base 1 is of a square box-shaped structure as a whole, a rotary table 2 is arranged on the upper top surface of the base 1, two demonstration grooves 3 are radially arranged on the upper top surface of the rotary table 2, a positioning column 4 concentric with the rotary table 2 is arranged between the two demonstration grooves 3, the bottom surface of each demonstration groove 3 is in an inclined design, the lowest point of each demonstration groove 3 is positioned at one end close to the positioning column 4, a positioning groove 5 is arranged on the side wall of the highest point and the adjacent side of each demonstration groove 3, a shaft hole 6 concentric with the positioning column 4 is arranged in the positioning column 4, an inner hexagonal hole 7 connected with the shaft hole 6 in an inner mode is arranged at the upper end of the shaft hole 6, and an inner;

the top of the positioning column 4 is provided with a top plate 9 capable of covering the demonstration groove 3, two ends of the top plate 9 are respectively bent downwards and vertically to form an end plate 10 capable of being inserted into the demonstration groove 3, the lower bottom surface of the top plate 9 is fixed with a hexagonal column 11 capable of being in clearance insertion fit with the inner hexagonal hole 7, a rotating shaft 12 in rotating connection fit with the hexagonal column 11 is arranged in the hexagonal column 11, the lower end of the rotating shaft 12 is provided with an external thread capable of being in screwing fit with the inner threaded hole 8, the upper end of the rotating shaft 12 is fixed with a positioning button 13, the rotating shaft 12 is sleeved with a spring 19, one end of the spring 19 is supported on the hexagonal column 11, and the other end of the spring 19 is supported on the end part of the shaft;

a demonstration steel ball 100 is arranged in the demonstration groove 3.

The middle part of the turntable 2 is fixed with a rotating shaft 14 concentric with the turntable, the rotating shaft 14 passes through the base 1 which is in rotating connection and matching with the rotating shaft and is connected with the driven bevel gear 15, the inside of the base 1 is provided with a driving shaft 17 which is in rotating connection and matching with the base, the driving shaft 17 is provided with a driving bevel gear 16 which is in meshing matching with the driven bevel gear 15, and one end of the driving shaft 17 extends out of the base 1 and is connected with a hand wheel 18.

Due to the adoption of the technical scheme, the invention has the following beneficial effects: simple structure can be through rotating rotatory carousel and can audio-visual demonstration centrifugal force with the help of the steel ball, and is convenient for demonstrate accomodating of steel ball after using, has improved holistic life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the technical scheme in the embodiment of the invention will be clearly and completely described below with reference to the attached drawings in the embodiment of the invention.

Referring to fig. 1, the embodiment is realized by adopting the following technical scheme, which comprises a base 1, wherein the base 1 is of a square box-shaped structure as a whole, a rotating disc 2 is arranged at the upper top surface of the base 1, two demonstration grooves 3 are radially arranged at the upper top surface of the rotating disc 2, a positioning column 4 concentric with the rotating disc 2 is arranged between the two demonstration grooves 3, the bottom surface of each demonstration groove 3 is in an inclined design, the lowest point of each demonstration groove 3 is positioned at one end close to the positioning column 4, a positioning groove 5 is arranged at the highest point of each demonstration groove 3 and on the side wall of the adjacent side of each demonstration groove, a shaft hole 6 concentric with the positioning column 4 is arranged in the positioning column 4, an inner hexagonal hole 7 internally connected with the shaft hole 6 is arranged at the upper end of the shaft hole 6, and an inner threaded;

a demonstration steel ball 100 is arranged in the demonstration groove 3.

The following will further explain the application method and the principle of the technical solution part in this embodiment with reference to the accompanying drawings:

before use, firstly, the positioning button 13 is rotated, the rotating shaft 12 linearly moves upwards through the hexagonal column 11 in the screwing-out process, and meanwhile, the top plate 9 is pushed by the spring 19 to drive the end plate 10 to linearly slide upwards and move out of the demonstration groove 3 until the demonstration steel ball 100 can completely and freely roll in the demonstration groove 3, and then the next demonstration operation can be carried out;

when the demonstration steel ball positioning device is used, the driving shaft 17 is rotated through the hand wheel 18, the driving shaft 17 drives the turntable 2 to rotate through the driving conical gear 16 and the driven conical gear 15 in the rotating process, the demonstration steel ball 100 can be moved into the positioning groove 5 through the generated centrifugal force, and the demonstration steel ball 100 is remained in the positioning groove 5 when the hand wheel 18 stops rotating;

during storage, the demonstration steel ball 100 is dialed into the demonstration groove 3, the demonstration steel ball 100 automatically rolls into the lowest end of the demonstration groove 3 to be contacted with the positioning column 4 under the action of gravity, then the positioning button 13 is rotated, the rotating shaft 12 linearly moves downwards at the top plate 9 and the end plate 10 in the screw-in process until the demonstration steel ball 100 is covered and buckled in the demonstration groove 3 again, and the storage purpose can be realized.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A physical mechanics display model is characterized in that the model comprises a base (1), the base (1) is a cubic box-shaped structure, a turntable (2) is arranged on the upper top surface of the turntable (2), two demonstration grooves (3) are radially arranged on the upper top surface of the turntable (2), a positioning column (4) concentric with the turntable (2) is arranged between the two demonstration grooves (3), the bottom surfaces of the demonstration grooves (3) are designed in an inclined manner, the lowest point of the demonstration groove is positioned at one end close to the positioning column (4), the side wall of the highest point and the adjacent side of the demonstration groove (3) is provided with a positioning groove (5), a shaft hole (6) concentric with the positioning column (4) is arranged in the positioning column, the upper end of the shaft hole (6) is provided with an inner hexagonal hole (7) which is internally connected with the shaft hole (6), an internal threaded hole (8) is axially formed in the lower end of the shaft hole (6); the top of the positioning column (4) is provided with a top plate (9) capable of covering the demonstration groove (3), two ends of the top plate (9) are respectively bent downwards and vertically to form end plates (10) capable of being inserted into the demonstration groove (3), the lower bottom surface of the top plate (9) is fixed with a hexagonal column (11) capable of being in clearance insertion fit with the hexagonal socket (7), a rotating shaft (12) rotatably connected and matched with the hexagonal column (11) is arranged in the hexagonal column (11), the lower end of the rotating shaft (12) is provided with an external thread capable of being in screwed fit with the internal threaded hole (8), the upper end of the rotating shaft (12) is fixed with a positioning button (13), the rotating shaft (12) is sleeved with a spring (19), one end of the spring (19) abuts against the hexagonal column (11), and the other end of the spring (19) abuts against the end of the shaft hole (6); a demonstration steel ball (100) is arranged in the demonstration groove (3);

a rotating shaft (14) concentric with the rotating disc (2) is fixed in the middle of the rotating disc (2), the rotating shaft (14) penetrates through a base (1) in rotating connection and matching with the rotating shaft to be connected with a driven bevel gear (15), a driving shaft (17) in rotating connection and matching with the base (1) is arranged in the base (1), a driving bevel gear (16) in meshing matching with the driven bevel gear (15) is installed on the driving shaft (17), and one end of the driving shaft (17) extends out of the base (1) to be connected with a hand wheel (18); before use, firstly, the positioning button 13 is rotated, the rotating shaft 12 linearly moves upwards through the hexagonal column 11 in the screwing-out process, and meanwhile, the top plate 9 is pushed by the spring 19 to drive the end plate 10 to linearly slide upwards and move out of the demonstration groove 3 until the demonstration steel ball 100 can completely and freely roll in the demonstration groove 3, and then the next demonstration operation can be carried out;

when the demonstration steel ball positioning device is used, the driving shaft is rotated through the hand wheel, the driving shaft drives the rotary table to rotate through the driving conical gear and the driven conical gear in the rotating process, the demonstration steel ball can be moved into the positioning groove by the generated centrifugal force, and the demonstration steel ball is left in the positioning groove when the hand wheel stops rotating; when accomodating, dial into the demonstration steel ball demonstration inslot, the demonstration steel ball is automatic to roll into the lowermost end and the reference column contact in demonstration groove under the effect of gravity, and the rotational positioning button is followed to the pivot, and the pivot is down at the in-process roof of screw in and end plate straight line, covers the knot again at the demonstration inslot until will demonstrating the steel ball, can realize the purpose of accomodating.