CN107610560B - Instant center demonstration instrument - Google Patents
Instant center demonstration instrument Download PDFInfo
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- CN107610560B CN107610560B CN201710778601.9A CN201710778601A CN107610560B CN 107610560 B CN107610560 B CN 107610560B CN 201710778601 A CN201710778601 A CN 201710778601A CN 107610560 B CN107610560 B CN 107610560B
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- rotating disc
- alternating current
- current motor
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Abstract
The invention discloses a transient center demonstration instrument which comprises a main rotating disc and a transparent secondary rotating disc, wherein the secondary rotating disc is rotatably connected to the main rotating disc, a plurality of LED lamp modules are arranged on the main rotating disc, a first alternating current motor for driving the main rotating disc to rotate is connected to the main rotating disc, a second alternating current motor is connected to the secondary rotating disc, a first speed regulator and a second speed regulator for controlling the rotating speed and the steering are respectively coupled to the first alternating current motor and the second alternating current motor, the first speed regulator and the second speed regulator are both coupled to a single chip microcomputer, and an LED controller is coupled to the single chip microcomputer; angular speed omega 1 and omega 2 information on the first speed regulator and the second speed regulator are output to a single chip microcomputer, the single chip microcomputer processes the information, the center distance between a main rotating disc and a secondary rotating disc is R, the instantaneous distance R is calculated to be R (omega 2-omega 1)/omega 2, a plurality of LED rows are arranged on an LED lamp module at equal intervals, the distance between the LED rows is s, the number of lighting lamps is A to R/s, then the single chip microcomputer outputs a signal A to an LED controller, and the lighting conditions of the LED modules and the like are controlled through the LED controller.
Description
Technical Field
The invention relates to teaching demonstration equipment, in particular to a transient center demonstration instrument.
Background
At some instant, the point in the plane graph where the velocity equals 0 is called the velocity instant center.
It can be known from theoretical mechanics that the coincidence point of the instantaneous speeds of two members which are in mutual plane relative motion (at the time of research, sometimes the instantaneous center is not on the mechanism or the member drawn in the drawing, at this time, the related member is considered to be extended or infinitely extended, and the member used in the research is only the simplest structural form of the member in reality) is the instantaneous center of the speeds of the two members.
The instant center is a relatively abstract concept, and the amount which can be obtained only by calculation is needed, so that a visual and visible demonstration device is needed in the teaching process.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a transient center demonstration instrument.
In order to achieve the purpose, the invention provides the following technical scheme:
a transient center demonstration instrument comprises a main rotating disc and a transparent secondary rotating disc, wherein the secondary rotating disc is rotatably connected to the main rotating disc, a plurality of LED lamp modules are arranged in the connecting line direction of the central line point of the main rotating disc at the central line point of the secondary rotating disc, a first alternating current motor for driving the main rotating disc to rotate is connected to the main rotating disc, a second alternating current motor for driving the secondary rotating disc to rotate is connected to the secondary rotating disc, a first speed regulator and a second speed regulator for controlling the rotating speed and the steering are respectively coupled to the first alternating current motor and the second alternating current motor, the first speed regulator and the second speed regulator are both coupled to a single chip microcomputer, an LED controller is coupled to the single chip microcomputer, and the LED controller is coupled to the LED lamp modules;
As a further improvement of the invention: the angular speed is a positive value when the first alternating current motor and the second alternating current motor rotate forwards, and the angular speed is a negative value when the first alternating current motor and the second alternating current motor rotate backwards.
As a further improvement of the invention: the first alternating current motor and the second alternating current motor are arranged at the bottom of the main rotating disc, and the output end of the second alternating current motor penetrates through the main rotating disc and the LED belt and is connected with the secondary rotating disc.
As a further improvement of the invention: a through groove is formed in the connecting line of the central point position of the main rotating disc and the central position of the secondary rotating plate, the LED lamp module is arranged in the through groove, a sliding groove is formed in the through groove, and the LED lamp module slides into the sliding groove.
As a further improvement of the invention: the main rotating disc is provided with an installation groove, a handle is hinged in the installation groove, and the handle is accommodated in the installation groove after rotating.
As a further improvement of the invention: the handle is provided with a slot on the flower, a slide is arranged in the mounting groove, an inserted bar used for inserting the slot is connected in the slide in a sliding manner, and an insertion spring used for keeping the inserted bar to be inserted into the slot is arranged between the inserted bar and the slide.
As a further improvement of the invention: be provided with the baffle on the inserted bar, the inserted bar is worn out from the baffle both ends respectively, the baffle radius is greater than and inserts the spring radius, insert spring one end and conflict with the baffle, the other end is contradicted bottom the slide, be provided with in the slide and supply the inserted bar towards slide one end male constant head tank, the one end of inserted bar slide dorsad sets up in the inclined plane, the inclined plane is towards mounting groove opening direction.
As a further improvement of the invention: the surface of the main rotating disc is provided with a through passage, the through passage is communicated with the slide way, and the inserted rod is provided with a deflector rod which penetrates out of the through passage.
As a further improvement of the invention: the mounting groove bottom is provided with the electro-magnet, be provided with first perforation on the handle, be provided with the second perforation on the inserted bar, be provided with the bolt on the handle, the bolt is magnetic metal, the electro-magnet circular telegram back bolt passes first perforation and second perforation simultaneously, the electro-magnet establishes ties with an alternating current motor.
As a further improvement of the invention: the handle is provided with a fixing groove, the bolt is located in the fixing groove, a recovery spring for keeping the bolt located in the fixing groove is connected to the bolt, one end of the recovery spring is connected with the bolt, and the other end of the recovery spring is connected with the inner wall of the fixing groove.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a side view of the structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the present invention;
fig. 4 is a control diagram of the present invention.
Reference numerals: 1. a main rotating disk; 2. a secondary rotating disk; 3. an LED lamp module; 4. a first alternating current motor; 5. a second alternating current motor; 6. a through groove; 7. a sliding groove; 8. mounting grooves; 9. a handle; 10. a slot; 11. a slideway; 12. inserting a rod; 13. inserting a spring; 14. a baffle plate; 15. positioning a groove; 16. an inclined surface; 17. a through passage; 18. a deflector rod; 19. an electromagnet; 20. a first perforation; 21. a second perforation; 22. a bolt; 23. fixing grooves; 24. the spring is restored.
Detailed Description
The invention will be further described in detail with reference to the following examples, which are given in the accompanying drawings.
Referring to fig. 1 to 4, the centrode demonstrator of the embodiment includes a main rotating disk 1 and a transparent secondary rotating disk 2, wherein the secondary rotating disk 2 is rotatably connected to the main rotating disk 1, a plurality of LED lamp modules 3 are arranged in a direction of a connection line of a central line of the secondary rotating disk 2 at a central point of the main rotating disk 1, the main rotating disk 1 is connected to a first ac motor 4 for driving the main rotating disk 1 to rotate, the secondary rotating disk 2 is connected to a second ac motor 5 for driving the secondary rotating disk 2 to rotate, the first ac motor 4 and the second ac motor 5 are respectively coupled to a first speed regulator and a second speed regulator for controlling a rotating speed and a steering direction, the first speed regulator and the second speed regulator are both coupled to a single chip microcomputer, the single chip microcomputer is coupled to an LED controller, and the LED controller is coupled to the LED lamp modules 3;
In the using process, the first alternating current motor 4 and the second alternating current motor 5 rotate simultaneously, so that the main rotating disc 1 and the transparent secondary rotating disc 2 arranged on the main rotating disc 1 simulate another moving object by the central position of the main rotating disc 1 and the central position of the secondary rotating disc 2, although the central position of the main rotating disc 1 does not move, the movement is opposite, and the central point of the main rotating disc 1 does relative movement by taking the center of the secondary rotating disc 2 as a fixed point. This simulates two points of motion on one surface. Meanwhile, the angular speeds of the main rotating disc 1 and the secondary rotating disc 2 can be adjusted through the first speed regulator and the second speed regulator, the existing speed regulators can control the switch and the rotating speed, and can output speed signals, for example, an asianmi US-52 digital speed regulator and the like, the speed regulators can be directly coupled to the motor to be used, and simultaneously angle signals are transmitted to a single chip microcomputer, the single chip microcomputer can directly select a programmable single chip microcomputer, for example, a 51 single chip microcomputer, the angular speed is input through programming, meanwhile, the center distance of the main rotating disc 1 and the secondary rotating disc 2 is input into the main rotating disc 1 and the secondary rotating disc 2 in advance and then is calculated with the angular speeds omega 1 and omega 2 on the first speed regulator and the second speed regulator, and R is R (omega 2-omega 1)/omega 2, the distance from the center point on the main rotating disc 1 to the center point direction of the secondary rotating disc, by calculating r, the LED lamp module 3 is composed of a plurality of LED rows, the distance s between each row can be input into the single chip microcomputer in advance, and the number of the LED rows needing to be lightened is obtained through r/s. The signal of a is thus input to the LED controller, which is prior art, such as JX-30ARF-a1-LED controller can be used directly, by which the determination of the location of the instant center by the light lit by the LED light module 3 is achieved. Therefore, the position of the instant center can be visually displayed, and the instant center is more visual in the teaching process.
In a modified embodiment, the first ac motor 4 and the second ac motor 5 rotate in the forward direction at a positive angular velocity, and rotate in the reverse direction at a negative angular velocity.
As a modified specific embodiment, the first alternating current motor 4 and the second alternating current motor 5 are arranged at the bottom of the main rotating disk 1, and the output end of the second alternating current motor 5 penetrates through the main rotating disk 1 and the LED belt to be connected with the secondary rotating disk.
Through installing first alternating current motor 4 and second alternating current motor 5 to main carousel 1 bottom for whole mesa is more succinct in the use, can not receive first alternating current motor 4 and second alternating current motor 5's influence.
As an improved specific embodiment, a through groove 6 is arranged on a connecting line between a central point position and a secondary rotating plate central position on the main rotating disc 1, the LED lamp module 3 is arranged in the through groove 6, a sliding groove 7 is arranged in the through groove 6, and the LED lamp module 3 slides into the sliding groove 7.
Through the setting of through groove 6, can be in LED lamp module 3 installation, directly slide LED lamp module 3 to the inslot 7 that slides through the groove 7 that slides to install to through in the groove 6, make LED lamp module 3 expose.
As a modified specific embodiment, the main rotating disk 1 is provided with a mounting groove 8, a handle 9 is hinged in the mounting groove 8, and the handle 9 is accommodated in the mounting groove 8 after being rotated.
In whole equipment fixing process, can through handle 9 lift up can, in the use demonstration process, because handle 9 articulates in mounting groove 8, just so can rotate handle 9, rotatory with handle 9, accomodate to mounting groove 8 in can.
As a modified specific embodiment, the handle 9 is provided with a slot 10, the mounting groove 8 is provided with a slide 11 therein, the slide 11 is connected with an inserted link 12 for inserting into the slot 10 in a sliding manner, and an insertion spring 13 for keeping the inserted link 12 inserted into the slot 10 is arranged between the inserted link 12 and the slide 11.
After the handle 9 is received in the mounting groove 8, the insertion rod 12 in the slide 11 is inserted into the insertion groove 10, and the handle 9 is not easily rotated by the external force of the insertion spring 13. The stability of the structure is guaranteed.
As a modified embodiment, be provided with baffle 14 on inserted bar 12, inserted bar 12 is worn out from baffle 14 both ends respectively, baffle 14 radius is greater than and inserts spring 13 radius, insert spring 13 one end and conflict with baffle 14, the other end and conflict with slide 11 bottom, be provided with in the slide 11 and supply inserted bar 12 towards slide 11 one end male constant head tank 15, the one end of inserted bar 12 dorsad slide 11 sets up in inclined plane 16, inclined plane 16 is towards the 8 opening directions in mounting groove.
Make through the setting of baffle 14 inserting spring 13 fixed more convenient, simultaneously through the setting of constant head tank 15, can play a location effect in inserted bar 12 installation for inserted bar 12 inserts in constant head tank 15, can make the installation more accurate, at the flexible in-process of inserted bar 12, can slide in constant head tank 15. In addition, through the arrangement of the inclined surface 16, the inserted bar 12 can be directly pressed into the positioning groove 15 along the inclined surface 16 in the rotating process of the handle 9, so that the handle 9 is embedded into the mounting groove 8, and when the slot 10 is overlapped with the inserted bar 12, the inserted bar 12 can be inserted into the slot 10 under the restoring force of the insertion spring 13 to play a fixing role.
As a modified specific embodiment, a through passage 17 is arranged on the surface of the main rotating disc 1, the through passage 17 is communicated with the slide way 11, a shift lever 18 is arranged on the inserted link 12, and the shift lever 18 penetrates out of the through passage 17.
Through the arrangement of the through passage 17, the shift lever 18 can pass through the slideway 11, so that the insertion rod 12 can be pulled more conveniently.
As a modified specific embodiment, an electromagnet 19 is arranged at the bottom of the mounting groove 8, a first through hole 20 is arranged on the handle 9, a second through hole 21 is arranged on the insertion rod 12, a bolt 22 is arranged on the handle 9, the bolt 22 is made of magnetic metal, after the electromagnet 19 is electrified, the bolt 22 simultaneously passes through the first through hole 20 and the second through hole 21, and the electromagnet 19 is connected with the first alternating current motor 4 in series.
When the first alternating current motor 4 is started, the electromagnet 19 is started, and the electromagnet 19 is electrified to generate magnetism, so that the bolt 22 with magnetism can be attracted by the electromagnet 19 and simultaneously passes through the first through hole 20 and the second through hole 21, and the handle 9 cannot be pulled out after the first alternating current motor 4 is started.
As a modified specific embodiment, the handle 9 is provided with a fixing groove 23, the latch 22 is located in the fixing groove 23, the latch 22 is connected with a restoring spring 24 for keeping the latch 22 located in the fixing groove 23, one end of the restoring spring 24 is connected with the latch 22, and the other end is connected with the inner wall of the fixing groove 23.
Through the arrangement of the return spring, the plug pin 22 can return to the fixing groove 23 under the condition of no magnetic force.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (3)
1. A transient center demonstration instrument is characterized in that: comprises a main rotating disk (1) and a transparent secondary rotating disk (2), wherein the secondary rotating disk (2) is rotationally connected to the main rotating disk (1), and a plurality of LED lamp modules (3) are arranged at the central point of the main rotating disc (1) in the connecting line direction of the central line point of the secondary rotating disc (2), the main rotating disc (1) is connected with a first alternating current motor (4) for driving the main rotating disc (1) to rotate, the secondary rotating disk (2) is connected with a second alternating current motor (5) for driving the secondary rotating disk (2) to rotate, the first alternating current motor (4) and the second alternating current motor (5) are respectively coupled with a first speed regulator and a second speed regulator for controlling the rotating speed and the steering, the first speed regulator and the second speed regulator are both coupled to a single chip microcomputer, an LED controller is coupled to the single chip microcomputer, and the LED controller is coupled to the LED lamp module (3); a through groove (6) is formed in a connecting line between the central point of the main rotating disc (1) and the central point of the secondary rotating disc (2), the LED lamp module (3) is arranged in the through groove (6), a sliding groove (7) is formed in the through groove (6), the LED lamp module (3) slides into the sliding groove (7),
the angular speed omega 1 and omega 2 information on the first speed regulator and the second speed regulator are output to a single chip microcomputer, the single chip microcomputer processes the information, the center distance between a main rotating disc (1) and a secondary rotating disc (2) is R, the instantaneous distance R is calculated to be R (omega 2-omega 1)/omega 2, a plurality of LED rows are equidistantly arranged on an LED lamp module (3), the distance between the LED rows is s, the number of lighting lamps is A to be R/s, then the single chip microcomputer outputs a signal A to an LED controller, and the lighting conditions of the LED modules and the like are controlled by the LED controller;
be provided with mounting groove (8) on main rolling disc (1), mounting groove (8) internal hinge has handle (9), hold to mounting groove (8) in handle (9) rotatory back, be provided with slot (10) on handle (9), be provided with slide (11) in mounting groove (8), slide (11) internal slip is connected with inserted bar (12) that are used for inserting slot (10), be provided with between inserted bar (12) and slide (11) and keep inserted bar (12) to insert inserted spring (13) of slot (10), be provided with baffle (14) on inserted bar (12), inserted bar (12) are worn out from baffle (14) both ends respectively, baffle (14) radius is greater than and inserts spring (13) radius, insert spring (13) one end and conflict with baffle (14), the other end conflicts with slide (11) bottom, be provided with in slide (11) and supply inserted bar (12) towards slide (11) one end male constant head tank (constant head tank) (constant head 15) One end of the inserted bar (12), which is back to the slide way (11), is arranged on an inclined plane (16), the inclined plane (16) faces the opening direction of the installation groove (8), a through passage (17) is arranged on the surface of the main rotating disc (1), the through passage (17) is communicated with the slide way (11), a shift lever (18) is arranged on the inserted bar (12), the shift lever (18) penetrates out of the through passage (17), an electromagnet (19) is arranged at the bottom of the installation groove (8), a first through hole (20) is arranged on the handle (9), a second through hole (21) is arranged on the inserted bar (12), a bolt (22) is arranged on the handle (9), the bolt (22) is made of magnetic metal, the bolt (22) penetrates through the first through hole (20) and the second through hole (21) simultaneously after the electromagnet (19) is electrified, and the electromagnet (19) is connected with the first alternating current motor (4) in series, be provided with fixed slot (23) on handle (9), bolt (22) are located fixed slot (23), be connected with on bolt (22) and keep bolt (22) to be located recovery spring (24) in fixed slot (23), recovery spring (24) one end is connected with bolt (22), and the other end is connected with fixed slot (23) inner wall.
2. The instant center demonstration instrument according to claim 1, wherein: the angular speed of the first alternating current motor (4) and the second alternating current motor (5) is a positive value when the motors rotate forwards, and the angular speed of the motors rotates backwards is a negative value when the motors rotate backwards.
3. The instant center demonstration instrument according to claim 2, wherein: the first alternating current motor (4) and the second alternating current motor (5) are arranged at the bottom of the main rotating disc (1), and the output end of the second alternating current motor (5) penetrates through the main rotating disc (1) and the LED belt and is connected with the secondary rotating disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778601.9A CN107610560B (en) | 2017-08-31 | 2017-08-31 | Instant center demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710778601.9A CN107610560B (en) | 2017-08-31 | 2017-08-31 | Instant center demonstration instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107610560A CN107610560A (en) | 2018-01-19 |
| CN107610560B true CN107610560B (en) | 2021-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710778601.9A Active CN107610560B (en) | 2017-08-31 | 2017-08-31 | Instant center demonstration instrument |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1305762A1 (en) * | 1985-11-19 | 1987-04-23 | Днепропетровский государственный университет им.300-летия воссоединения Украины с Россией | Teaching-aid device on theoretical mechanics |
| CN1676290A (en) * | 2005-04-22 | 2005-10-05 | 河海大学 | Double-end movable rotation-shaft electric shaver |
| CN202875119U (en) * | 2012-06-25 | 2013-04-17 | 周小健 | Electromagnetic detachable handle |
| CN104123869B (en) * | 2014-06-30 | 2016-07-06 | 浙江工业大学 | A kind of teaching aid of rational mechanics instantaneous Velocity Center Method |
| CN104240564B (en) * | 2014-07-17 | 2017-06-13 | 浙江工业大学 | Rational mechanics answering device |
| CN205722524U (en) * | 2015-12-09 | 2016-11-23 | 乐山师范学院 | Centripetal force experiment teaching demonstration instrument |
| CN105972184A (en) * | 2016-07-10 | 2016-09-28 | 北京工业大学 | Design method for tooth profile equation of cycloidal gear based on instantaneous velocity center method |
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2017
- 2017-08-31 CN CN201710778601.9A patent/CN107610560B/en active Active
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Denomination of invention: A Instantaneous Center Demonstrator Effective date of registration: 20230522 Granted publication date: 20210629 Pledgee: Hunan Liuyang Rural Commercial Bank Co.,Ltd. Jili sub branch Pledgor: HUNAN WEICHU SCIENCE & EDUCATION TRAINING ROOM EQUIPMENT Co.,Ltd. Registration number: Y2023980041396 |