CN106683541B - Disc type belt transmission problem experimental instrument - Google Patents
Disc type belt transmission problem experimental instrument Download PDFInfo
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- CN106683541B CN106683541B CN201710151558.3A CN201710151558A CN106683541B CN 106683541 B CN106683541 B CN 106683541B CN 201710151558 A CN201710151558 A CN 201710151558A CN 106683541 B CN106683541 B CN 106683541B
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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
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Abstract
The invention relates to a physical teaching aid, in particular to a disc type belt transmission problem experimental instrument which comprises a base, an arc-shaped track, a measuring angle square, a positioning bolt, a disc, a driven wheel, a driving wheel, a motor, a belt, a material block, a stroboscopic camera, an angle indication score line rotating shaft and a motor fixing seat, wherein the arc-shaped track is arranged on the base; the front surface of the disc is connected with the driven wheel through a rotating shaft A, the driving wheel is connected with the driving wheel through a rotating shaft B, the driving wheel is connected with the motor on the back surface of the disc through the rotating shaft B, the motor is connected with the control box through a wire, and the rotating speed and the steering direction of the motor can be controlled through keys on the control panel; the stroboscopic camera is used for taking a picture of the motion scene of the object block on the belt. The invention has the advantages that various combination conditions such as uniform speed, acceleration, deceleration and the like of the object blocks along the inclined plane can be quantitatively and qualitatively demonstrated, for example: when the belt is placed obliquely, a proper inclination angle is selected, so that the object blocks slide downwards along the inclined plane at a constant speed, and the relation between the dynamic friction factor and the inclination angle tangent value of the inclined plane is studied.
Description
Technical Field
The invention relates to a physical teaching aid, in particular to a disc type belt transmission problem experimental instrument.
Background
In the middle school physics teaching process, the belt transmission problem is often to be explained, the traditional method is theoretical explanation, a middle school physics laboratory lacks an experimental device for changing the belt inclination angle through a manual disc rotation mode, the belt inclination angle can be randomly adjusted in the market, the rotation angle is automatically displayed through a dial, particularly the relation between a dynamic friction factor and an inclined plane inclination angle tangent value is studied, so that the problem that a material block moves on a conveyor belt in an accelerating and uniform manner is studied, a stroboscopic photo is shot through a stroboscopic camera, and the problem that the material block moves on the belt is qualitatively or quantitatively studied.
Disclosure of Invention
In order to solve the problems in the background technology, the invention adopts the following technical scheme, which can solve the problem of multiple processes related to belt transportation in the middle school physical teaching process, and is convenient for qualitative or quantitative research and analysis; the utility model provides a disc belt transmission problem experimental instrument, includes the base, vertical pole setting A, U-shaped horizontal pole, the support frame of bending, the control box, horizontal pole, arc track, measurement angle square, positioning bolt, the disc, from the driving wheel, the action wheel, the motor, the belt, the thing piece, control panel, starting switch, stroboscopic camera, angle indication line, vertical supporting seat A, pivot B, pivot C, the motor fixing base, the scale, the reversing switch, the speed governing knob, thing piece position pointer, the motor fixing base.
The upper part of the base is fixedly connected with a pair of vertical upright rods A, the upper ends of the pair of vertical upright rods A are fixedly connected with a U-shaped horizontal cross rod, and the middle part of the U-shaped horizontal cross rod is fixedly provided with a stroboscopic camera; the pair of vertical upright rods A are fixedly connected with a vertical supporting seat A through a pair of bent supporting frames, the upper end of the vertical supporting seat A comprises a rotating shaft C, and the disc is rotatably connected with the vertical supporting seat A through the rotating shaft C; the lower end of the vertical supporting seat A is connected with a control box; the utility model discloses a vertical supporting seat A's below both sides and a pair of support frame fixed connection that bends, a pair of support frame top fixed connection arc track that bends, the orbital positive bread content angle square of arc, the orbital top of arc designs the arc recess, the edge of the disc all around is placed in the arc recess, makes the disc fix a position in the arc recess through positioning bolt, positioning bolt contains a plurality of screws and nut, and the nut is fixed in the orbital front of arc, and the screw cover is in the nut, screws the screw, can make the disc location, and through the scale of angle indication dividing line and protractor contact department, reads out the rotatory angle of disc, the inclination of belt promptly, i.e. the inclination of inclined plane.
Further, the front surface of the disc is connected with the driven wheel through a rotating shaft A, the driving wheel is connected with the driving wheel through a rotating shaft B, the driving wheel is connected with the motor on the back surface of the disc through the rotating shaft B, the motor is connected with the control box through a wire, and the rotating speed and the steering direction of the motor can be controlled through keys on the control panel; the motor is connected to the back of the disc through a motor fixing seat.
Further, the control panel comprises a starting switch, a reversing switch and a speed regulating knob, and is used for controlling the rotating speed and the steering of the motor.
The stroboscopic camera is used for shooting a moving scene photo of the object block on the belt, the surface of the disc at the edge of the belt comprises a graduated scale, coordinate values are read from the position, overlapped with the graduated scale, of the position pointer of the object block, and the stroboscopic camera is used for performing interval displacement data analysis.
The belt is sleeved around the driven wheel and the driving wheel, the belt is also provided with a block, the block comprises a block position pointer above the block, and the block can be in static, acceleration, deceleration and other states relative to the belt.
The invention has the advantages that various combination conditions such as uniform speed, acceleration, deceleration and the like of the object blocks along the inclined plane can be quantitatively and qualitatively demonstrated, and the following experiments can be specifically carried out:
(1) When the belt is horizontally placed, the object block is lightly placed at one end of the belt, and under the action of friction force, the object block is accelerated first and then at a constant speed along the horizontal direction, and the condition that the movement time along the belt is shortest is always accelerated and verified;
(2) When the belt is placed obliquely, a proper inclination angle is selected, so that the object blocks slide downwards along the inclined plane at a constant speed, and the relation between the dynamic friction factor and the inclination angle tangent value of the inclined plane is studied;
(3) When the belt is obliquely placed, a proper inclination angle is selected, the object block is lightly placed at the lower end of the belt, and when the belt rotates upwards at a constant speed, under the action of friction force, the object block accelerates firstly along the direction of the inclined plane and then at a constant speed, and the acceleration time is shortest all the time;
(4) When the belt is obliquely placed, the object block is lightly placed at the upper end of the belt, and when the belt rotates downwards at a constant speed, the object block is accelerated firstly along the direction of the inclined plane and then at a constant speed under the action of friction force, or is accelerated firstly at a larger acceleration and then at a smaller acceleration.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic side elevational view of the present invention;
FIG. 3 is a diagram showing the effect of forming a bevel structure by rotation according to the present invention;
FIG. 4 is a schematic view of the control panel structure of the present invention;
in the figure: 1. the device comprises a base, 2, vertical upright rods A,3, U-shaped horizontal cross rods, 4, a bending support frame, 5, a control box, 6, horizontal cross rods, 7, an arc-shaped track, 8, a protractor, 9, a positioning bolt, 10, a disc, 11, a driven wheel, 12, a driving wheel, 13, a motor, 14, a belt, 15, a material block, 16, a control panel, 17, a starting switch, 18, a stroboscopic camera, 19, an angle indication line, 20, a vertical support seat A,21, a rotating shaft A,22, a rotating shaft B,23, a rotating shaft C, 24, a graduated scale, 25, a reversing switch, 26, a speed adjusting knob, 27, a material block position pointer, 28 and a motor fixing seat.
Detailed Description
As shown in fig. 1, 2, 3 and 4, the disc type belt transmission problem experimental instrument comprises a base 1, a vertical upright A2, a U-shaped horizontal cross rod 3, a bending support frame 4, a control box 5, a horizontal cross rod 6, an arc-shaped track 7, a measuring angle square 8, a positioning bolt 9, a disc 10, a driven wheel 11, a driving wheel 12, a motor 13, a belt 14, a material block 15, a control panel 16, a starting switch 17, a stroboscopic camera 18, an angle indicating score line 19, a vertical support seat a20, a rotating shaft a21, a rotating shaft B22, a rotating shaft C23, a graduated scale 24, a reversing switch 25, a speed adjusting knob 26, a material block position pointer 27 and a motor fixing seat 28.
A pair of vertical upright rods A2 are fixedly connected above the base 1, the upper ends of the pair of vertical upright rods A2 are connected with a U-shaped horizontal cross rod 3, and a stroboscopic camera 18 is fixed in the middle of the U-shaped horizontal cross rod 3; the pair of vertical upright rods A2 are fixedly connected with a vertical support seat A20 through a pair of bent support frames 4, the upper end of the vertical support seat A20 comprises a rotating shaft C23, and the disc 10 is rotatably connected with the vertical support seat A20 through the rotating shaft C23; the lower end of the vertical supporting seat A20 is connected with a control box 5; the lower both sides of vertical supporting seat A20 and the fixed connection of a pair of support frame 4 of buckling, the fixed connection arc track 7 of a pair of support frame 4 top of buckling, the positive bread content angle square 8 of arc track 7, the arc recess is designed to the top of arc track 7, the edge all around of disc 10 is placed in the arc recess, makes disc 10 location in the arc recess through positioning bolt 9, positioning bolt 9 contains many screws and nuts, and the nut is fixed in the front of arc track 7, and the screw cover is in the nut, screws the screw, can make disc 10 location, and through the scale of angle indication dividing 19 and measuring angle square 8 contact department, reads out the rotatory angle of disc 10, namely the inclination of belt 14, i.e. the inclination of inclined plane.
The front surface of the disc 10 is connected with the driven wheel 11 through a rotating shaft A21, the driving wheel 12 is connected with the motor 13 on the back surface of the disc through a rotating shaft B22, the motor 13 is connected with the control box 5 through a wire, and the rotating speed and the steering direction of the motor 13 can be controlled through a key start switch 17 on the control panel 16; the motor 13 is fixedly connected to the back of the disc 10 through a motor fixing seat 28.
The control panel 16 comprises a reversing switch 17, a starting switch 25 and a speed regulating knob 26 for controlling the rotating speed and the steering of the motor 13.
The strobe camera 18 is used for shooting a picture of the moving scene of the object block 15 on the belt 14, the surface of the edge disc 10 of the belt 14 comprises a graduated scale 24, and coordinate values are read from the position where the object block position pointer 27 coincides with the graduated scale 24 and used for interval displacement data analysis of strobe photography.
The belt 14 is sleeved around the driven wheel 11 and the driving wheel 12, the belt 14 is also provided with a block 15, a block position pointer 27 is arranged above the block 15, and the block 15 can be in static, acceleration, deceleration and other states relative to the belt 14.
In embodiment 1, when the belt 14 is horizontally placed, the object block 15 is lightly placed at the left end of the belt, and when the belt 14 rotates clockwise at a constant speed, the object block 15 accelerates rightward first at a constant speed or uniformly accelerates rightward all the time under the action of friction force, so that the condition that the object block 15 accelerates uniformly rightward all the time can be verified as the shortest moving time of the object block 15 along the belt 14.
In example 2, when the belt 14 is placed obliquely, a proper inclination angle is selected, the belt 14 is not moved, the object block 15 slides down the inclined plane at a constant speed, and the dynamic friction factor is verified to be equal to the tangent value of the inclination angle of the inclined plane.
In embodiment 3, when the belt 14 is placed obliquely, the proper inclination angle is selected so that the dynamic friction factor is larger than the tangent value of the inclination angle of the inclined plane, and the object block 15 is lightly placed at the lower end of the belt, when the belt 14 rotates clockwise at a uniform speed upwards, under the action of friction force, the situation that the object block accelerates first along the direction of the inclined plane and then at a uniform speed is verified, or the situation that the acceleration time is always the shortest is verified.
In embodiment 4, when the belt 14 is obliquely placed, a proper inclination angle is selected, and the object block 15 is lightly placed at the upper end of the belt, and when the belt 14 rotates anticlockwise and downwards at a uniform speed, under the action of friction force, the object block is verified to accelerate first along the direction of the inclined plane and then at a uniform speed, or accelerate first at a larger acceleration and then at a smaller acceleration, because the dynamic friction factor is greater than or equal to the tangent value of the inclined plane inclination angle, or the dynamic friction factor is smaller than the tangent value of the inclined plane inclination angle.
Claims (1)
1. The utility model provides a disc belt transmission problem experiment appearance, including base (1), vertical pole A (2), U-shaped horizontal cross pole (3), support frame (4) of bending, control box (5), horizontal cross pole (6), arc track (7), angle measuring ruler (8), locating bolt (9), disc (10), from driving wheel (11), action wheel (12), motor (13), belt (14), thing piece (15), control panel (16), start switch (17), stroboscopic camera (18), angle indication dividing line (19), vertical support A (20), pivot A (21), pivot B (22), pivot C (23), scale (24), reversing switch (25), speed governing knob (26), thing piece position pointer (27), motor fixing base (28); the device is characterized in that a pair of vertical upright rods A (2) are fixedly connected above the base (1), the upper ends of the pair of vertical upright rods A (2) are fixedly connected with a U-shaped horizontal cross rod (3), and a stroboscopic camera (18) is fixed in the middle of the U-shaped horizontal cross rod (3); the pair of vertical upright rods A (2) are fixedly connected with a vertical supporting seat A (20) through a pair of folding supporting frames (4), the upper end of the vertical supporting seat A (20) comprises a rotating shaft C (23), and the disc (10) is rotationally connected with the vertical supporting seat A (20) through the rotating shaft C (23); the lower end of the vertical supporting seat A (20) is connected with a control box (5); the vertical support seat is characterized in that two sides below the vertical support seat A (20) are fixedly connected with a pair of buckling support frames (4), an arc track (7) is fixedly connected above the pair of buckling support frames (4), the front face of the arc track (7) comprises an angle gauge (8), an arc groove is designed above the arc track (7), the periphery of the disc (10) is placed in the arc groove, the disc (10) is positioned in the arc groove through a positioning bolt (9), the positioning bolt (9) comprises a plurality of screws and nuts, the nuts are fixed on the front face of the arc track (7), the screws are sleeved in the nuts, the screws are screwed, the disc (10) can be positioned, and the rotating angle of the disc (10), namely the inclination angle of an inclined plane, is read out through the scale of the contact position of an angle indication score line (19) and the angle gauge (8); the front surface of the disc (10) is connected with the driven wheel (11) through a rotating shaft A (21), the driven wheel (12) is connected with the driving wheel (22) through a rotating shaft B (22), the driving wheel (12) is connected with a motor (13) on the back surface of the disc through the rotating shaft B (22), the motor (13) is connected with the control box (5) through a wire, and the rotating speed and the steering direction of the motor (13) can be controlled through keys on the control panel (16); the motor (13) is fixedly connected to the back of the disc (10) through a motor fixing seat (28); the control panel (16) comprises a reversing switch (17), a starting switch (25) and a speed regulating knob (26) which is used for controlling the rotating speed and the steering of the motor (13); the stroboscopic camera (18) is used for shooting a picture of the motion scene of the object block (15) on the belt (14); a graduated scale (24) is fixed on the surface of the edge disc (10) of the belt (14), coordinate values are read from the position where the object position pointer (27) coincides with the graduated scale (24), and interval displacement data analysis can be carried out by utilizing strobe pictures;
the belt (14) is sleeved around the driven wheel (11) and the driving wheel (12), and a block position pointer (27) is arranged above the block (15); when the belt (14) is horizontally placed, the object block (15) is lightly placed at the left end of the belt, and when the belt (14) rotates clockwise at a constant speed, the object block (15) accelerates rightwards firstly at a constant speed or uniformly accelerates rightwards all the time under the action of friction force; when the belt (14) is obliquely placed, a proper inclination angle is selected, the belt (14) is not moved, the object block (15) slides down along the inclined plane at a constant speed, and the dynamic friction factor is verified to be equal to the inclination tangent value of the inclined plane; when the belt (14) is obliquely placed, a proper inclination angle is selected, so that the dynamic friction factor is larger than the inclination angle tangent value of the inclined plane, and the object block (15) is lightly placed at the lower end of the belt, when the belt (14) rotates clockwise at a uniform speed upwards, under the action of friction force, the situation that the object block accelerates first along the direction of the inclined plane and then at a uniform speed is verified, or the situation that the acceleration time is always shortest is verified; when the belt (14) is obliquely placed, a proper inclination angle is selected, so that the dynamic friction factor is larger than or equal to the inclination angle tangent value of the inclined plane, the object block (15) is lightly placed at the upper end of the belt, and when the belt (14) rotates downwards at a constant speed anticlockwise, under the action of friction force, the object block is verified to be accelerated firstly along the inclined plane direction and then at a constant speed, so that the dynamic friction factor is smaller than the inclination angle tangent value of the inclined plane, and the object block is verified to be accelerated at a larger acceleration and then at a smaller acceleration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710151558.3A CN106683541B (en) | 2017-03-14 | 2017-03-14 | Disc type belt transmission problem experimental instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710151558.3A CN106683541B (en) | 2017-03-14 | 2017-03-14 | Disc type belt transmission problem experimental instrument |
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| CN106683541A CN106683541A (en) | 2017-05-17 |
| CN106683541B true CN106683541B (en) | 2023-05-09 |
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| CN201710151558.3A Active CN106683541B (en) | 2017-03-14 | 2017-03-14 | Disc type belt transmission problem experimental instrument |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29617693U1 (en) * | 1995-11-02 | 1996-12-12 | Play BC Etablissement, Vaduz | Educational tool |
| CN1547176A (en) * | 2003-12-11 | 2004-11-17 | 彤 李 | Static and kinetic friction demonstrator |
| CN203786967U (en) * | 2014-04-28 | 2014-08-20 | 哈尔滨师范大学 | Kinetic friction coefficient measuring and weightlessness and overweight demonstrating apparatus |
| CN104019801A (en) * | 2014-06-13 | 2014-09-03 | 四川大学 | Method for measuring Bohr resonance phase difference and modifying data through continuous photographing or camera shooting |
| CN203895006U (en) * | 2014-06-02 | 2014-10-22 | 姚金 | Demonstrator for bearing force of oblique surface along with inclination angle change |
| CN205247726U (en) * | 2016-01-12 | 2016-05-18 | 平昌县金山中学 | Sliding friction force demonstration apparatus |
| CN205708485U (en) * | 2016-04-22 | 2016-11-23 | 首都师范大学附属中学 | Multifunctional conveying device |
| CN206649784U (en) * | 2017-03-14 | 2017-11-17 | 郭金虎 | Disc type belt transport problem experiment instrument |
-
2017
- 2017-03-14 CN CN201710151558.3A patent/CN106683541B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29617693U1 (en) * | 1995-11-02 | 1996-12-12 | Play BC Etablissement, Vaduz | Educational tool |
| CN1547176A (en) * | 2003-12-11 | 2004-11-17 | 彤 李 | Static and kinetic friction demonstrator |
| CN203786967U (en) * | 2014-04-28 | 2014-08-20 | 哈尔滨师范大学 | Kinetic friction coefficient measuring and weightlessness and overweight demonstrating apparatus |
| CN203895006U (en) * | 2014-06-02 | 2014-10-22 | 姚金 | Demonstrator for bearing force of oblique surface along with inclination angle change |
| CN104019801A (en) * | 2014-06-13 | 2014-09-03 | 四川大学 | Method for measuring Bohr resonance phase difference and modifying data through continuous photographing or camera shooting |
| CN205247726U (en) * | 2016-01-12 | 2016-05-18 | 平昌县金山中学 | Sliding friction force demonstration apparatus |
| CN205708485U (en) * | 2016-04-22 | 2016-11-23 | 首都师范大学附属中学 | Multifunctional conveying device |
| CN206649784U (en) * | 2017-03-14 | 2017-11-17 | 郭金虎 | Disc type belt transport problem experiment instrument |
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| CN106683541A (en) | 2017-05-17 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20230404 Address after: 262550 No. 777, Qingling street, Qingzhou City, Weifang City, Shandong Province Applicant after: SHANDONG BAITE ELECTRONICS CO.,LTD. Address before: 225700 Xinghua nine middle school, 6 north nine road, Taizhou, Jiangsu Applicant before: Guo Jinhu |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Experimental instrument for disc belt transmission problems Effective date of registration: 20230926 Granted publication date: 20230509 Pledgee: Qingzhou Shandong rural commercial bank Limited by Share Ltd. Pledgor: SHANDONG BAITE ELECTRONICS CO.,LTD. Registration number: Y2023980058944 |
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