CN106251743A - A kind of little motor vehicle drive system of physics teaching experiment - Google Patents
A kind of little motor vehicle drive system of physics teaching experiment Download PDFInfo
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- CN106251743A CN106251743A CN201610718267.3A CN201610718267A CN106251743A CN 106251743 A CN106251743 A CN 106251743A CN 201610718267 A CN201610718267 A CN 201610718267A CN 106251743 A CN106251743 A CN 106251743A
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- track
- bracing wire
- dolly
- motor vehicle
- drive system
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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 present invention relates to a kind of little motor vehicle drive system, particularly relate to a kind of little motor vehicle drive system of physics teaching experiment.The technical problem to be solved in the present invention is to provide the little motor vehicle drive system of physics teaching experiment that a kind of experiment effect is obvious, drive efficiency is high, simple to operate.In order to solve above-mentioned technical problem, the invention provides the little motor vehicle drive system of such a physics teaching experiment, include the first track, the second track, bronze gong, the 3rd track, the first support, the 3rd bracing wire, the second iron ball, swing arm, the first elastic component, triangular supports, paint case, piston, stereoplasm tube, shower nozzle, push rod, controller, velocity sensor, sound transducer, dolly and iron staff etc., ground is sequentially provided with the first support bar, the second support bar and the 3rd support bar from left to right.Invention achieves the effect that experiment effect is obvious, drive efficiency is high, simple to operate, and make experimental result more accurate.
Description
Technical field
The present invention relates to a kind of little motor vehicle drive system, particularly relate to a kind of little motor vehicle drive system of physics teaching experiment.
Background technology
Education experiment, refers to that student, under the guidance of teacher, uses certain equipment and material, by the behaviour of control condition
Make process, cause some change of experimental subject, from the change observing these phenomenons, obtain new knowledge or the religion of checking knowledge
Method.In the teaching of the subjects such as physics, chemistry, biology, geographical and natural general knowledge, experiment is a kind of important method.One
As experiment laboratory, biology or agricultural test field carry out.Some experiments can also be carried out in classroom.
Drive system, refers to that stepping motor and stepping motor driver constitute the motor driven systems of stepping.
There is the shortcoming that experiment effect is inconspicuous, drive efficiency is low, operation is complicated in existing little motor vehicle drive system, the most urgently
The little motor vehicle drive system of physics teaching experiment that a kind of experiment effect is obvious, drive efficiency is high, simple to operate need to be designed.
Summary of the invention
(1) to solve the technical problem that
Existing little motor vehicle drive system experiment effect is inconspicuous, drive efficiency is low, operate complexity in order to overcome for the present invention
Shortcoming, the technical problem to be solved in the present invention is to provide the physics religion that a kind of experiment effect is obvious, drive efficiency is high, simple to operate
Learn experiment and use little motor vehicle drive system.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides the little motor vehicle drive system of such a physics teaching experiment,
Include the first track, the second track, bronze gong, the 3rd track, the first support, the 3rd bracing wire, the second iron ball, swing arm, first
Elastic component, triangular supports, paint case, piston, stereoplasm tube, shower nozzle, push rod, controller, velocity sensor, sound transducer,
Dolly, iron staff, the first bracing wire, the first iron ball, electronic reel, the second bracing wire, the second elastic component, the first support bar, second
Strut and the 3rd support bar, ground is sequentially provided with the first support bar, the second support bar and the 3rd support bar from left to right, and first
Post upper is provided with the first track, and the second post upper is provided with the second track, and the 3rd post upper is provided with the 3rd track,
First track right-hand member and the second track connect, and the second track right-hand member and the 3rd track connect, and the second track is placed with dolly, little
It is provided with iron staff in the middle of roof, on the right side of dolly rear wall, is provided with sound transducer, on the right side of dolly, be provided with velocity sensor, little
Being provided with controller on the right side of Herba Plantaginis wall, dolly left wall is provided with the first bracing wire and electronic reel, the first bracing wire be positioned at electronic around
The rear of line wheel, the first bracing wire lower end is provided with the first iron ball, and electronic reel is wound with the second bracing wire, and the 3rd track right-hand member sets
Being equipped with bronze gong, be provided with the first support on the right side of the 3rd track, the first support inner top is provided with the 3rd bracing wire, the 3rd bracing wire lower end
Connect and have the second iron ball, on front side of the second track, be disposed with the first elastic component, triangular supports, the second elastic component from left to right
With paint case, triangular supports rear end is hingedly connected with swing arm, and the second bracing wire front end is connected with swing arm, the first elastic component with
The rear end of the second elastic component is all connected with swing arm, is hingedly connected with push rod, is provided with piston, pushes away in paint case on the right side of swing arm
Bar front end is connected with piston, is provided with stereoplasm tube on the right side of paint case, and stereoplasm tube rear end is provided with shower nozzle, electronic reel, sound
Sensor and velocity sensor are connected with controller respectively.
Preferably, also including protective cover, controller periphery is provided with protective cover.
Preferably, also include tape measure, on front side of the 3rd track, be provided with tape measure.
Preferably, also including oscillating cylinder, stereoplasm tube is provided with oscillating cylinder, oscillating cylinder is connected with controller.
Preferably, the material of the first support is Q235 steel.
Preferably, the first bracing wire, the second bracing wire and the 3rd bracing wire are steel wire rope.
Preferably, the first elastic component is spring.
Operation principle: originally, the second bracing wire is in relaxed state, and paint case is built with appropriate paint, when people need
When carrying out physics teaching experiment, dolly is placed on the first track by people, and people applies certain active force to dolly so that dolly
Sliding, be in tensioned state at dolly through the second track, the second bracing wire, dolly continues to move right, and drives the second bracing wire
Moving right, the second bracing wire drives and is moved rearwards by the left of swing arm, and the first elastic component is stretched to reach on the right side of swing arm
Dynamic, drive push rod to move forward on the right side of swing arm, push rod drives piston to move forward so that piston extrudes forward in paint case
Paint so that the paint in paint case is sprayed by shower nozzle by stereoplasm tube, sprays paint the wheel of dolly, when having sprayed paint
Time, controller controls the work of electronic reel so that the second bracing wire is released so that swing arm is under the first elastic component elastic reaction
Resetting, dolly continues to move right, and when dolly enters three tracks, the first iron ball can tap bronze gong, and bronze gong sends sound, carries
Awake people start timing, and the sound sent is analyzed by sound transducer, and the instruction after sound transducer will be analyzed is sent to
Controller, controller controls velocity sensor and starts working, and now people can record when dolly has just enter into three tracks
Speed.While dolly continues to move right, iron staff on dolly can tap the second iron ball, and the second iron ball sends sound, works as sound
During stopping, just representing dolly and stopped, reminding people to stop timing, controller controls sound transducer and quits work, and controls
Device controls electronic reel and quits work, and controller controls velocity sensor and quits work.The mistake that dolly moves at the 3rd track
Cheng Zhong, the paint on wheel can leave the marking at the 3rd track, is convenient for people to measure distance that dolly travels it is known that dolly is the
The distance travelled on three tracks and dolly initial velocity on the 3rd track, just can calculate the friction system of the 3rd track
Number.
Because also including protective cover, controller periphery is provided with protective cover, so during spray paint, being possible to prevent
Controller is caused damaging by spray.
Because also including tape measure, on front side of the 3rd track, it is provided with tape measure, so more convenient people measure what dolly travelled
Distance.
Because also including oscillating cylinder, stereoplasm tube being provided with oscillating cylinder, oscillating cylinder is connected with controller, so
During spray paint, controller controls oscillating cylinder work, drives stereoplasm tube to swing, can expand the spray regime of paint.
Because the material of the first support is Q235 steel, Q235 steel is difficult to corrosion, and toughness is strong, it is possible to extend the first support
Service life.
Because the first bracing wire, the second bracing wire and the 3rd bracing wire are steel wire rope, steel wire rope not easy fracture and there is ductility,
It is possible to extend the first bracing wire, the second bracing wire and the service life of the 3rd bracing wire.
Because the first elastic component is spring, spring has high elastic limit, fatigue limit and impact flexibility, it is possible to
Extend the service life of the first elastic component.
The sea that controller selects sea, Xiamen to be Science and Technology Ltd.'s production is S24S0T type PLC, outside main frame
24VDC powers, 16 tunnel inputs, 8 tunnel outputs.The definition of input/output port is: X0 is activate switch, and X1 is shutdown switch, X2
For emergency stop switch, X3 is sound transducer, and X4 is velocity sensor；Y0 is electronic reel, and Y1 is oscillating cylinder.According to Fig. 7
Shown electric control theory figure, those skilled in the art need not performing creative labour, can realize control by programming
Device processed controls each parts and carries out action by above-mentioned operation principle, and the dependent instruction of programming is all prior art, does not repeats them here.
(3) beneficial effect
Invention achieves the effect that experiment effect is obvious, drive efficiency is high, simple to operate, and make experimental result more
Add accurately.
Accompanying drawing explanation
Fig. 1 is the first main TV structure schematic diagram of the present invention.
Fig. 2 is the second main TV structure schematic diagram of the present invention.
Fig. 3 is the first plan structure schematic diagram of the present invention.
Fig. 4 is the second plan structure schematic diagram of the present invention.
Fig. 5 is the third plan structure schematic diagram of the present invention.
Fig. 6 is the main TV structure schematic diagram of iron staff of the present invention.
Fig. 7 is the electric control theory figure of the present invention.
Being labeled as in accompanying drawing: 1-the first track, 2-the second track, 3-bronze gong, 4-the 3rd track, 5-the first support, 6-
3rd bracing wire, 7-the second iron ball, 8-swing arm, 9-the first elastic component, 10-triangular supports, 11-paints case, 12-piston, 13-
Stereoplasm tube, 14-shower nozzle, 15-push rod, 16-controller, 17-velocity sensor, 18-sound transducer, 19-dolly, 20-iron staff,
21-the first bracing wire, 22-the first iron ball, the electronic reel of 23-, 24-the second bracing wire, 25-the second elastic component, 26-first supports
Bar, 27-the second support bar, 28-the 3rd support bar, 29-ground, 30-protective cover, 31-tape measure, 32-oscillating cylinder.
Detailed description of the invention
The present invention is further illustrated with embodiment below in conjunction with the accompanying drawings.
Embodiment 1
A kind of little motor vehicle drive system of physics teaching experiment, as shown in figs. 1-7, include first track the 1, second track 2,
Bronze gong the 3, the 3rd track the 4, first support the 5, the 3rd bracing wire the 6, second iron ball 7, swing arm the 8, first elastic component 9, triangular supports
10, paint case 11, piston 12, stereoplasm tube 13, shower nozzle 14, push rod 15, controller 16, velocity sensor 17, sound transducer 18,
Dolly 19, iron staff the 20, first bracing wire the 21, first iron ball 22, electronic reel the 23, second bracing wire the 24, second elastic component 25, first
Support bar the 26, second support bar 27 and the 3rd support bar 28, ground 29 is sequentially provided with the first support bar 26, second from left to right
Support bar 27 and the 3rd support bar 28, the first support bar 26 upper end is provided with the first track 1, and the second support bar 27 upper end is provided with second
Track 2, the 3rd support bar 28 upper end is provided with the 3rd track 4, and the first track 1 right-hand member and the second track 2 connect, and the second track 2 is right
End is connected with the 3rd track 4, and the second track 2 is placed with dolly 19, and dolly 19 crown center is provided with iron staff 20, after dolly 19
It is provided with sound transducer 18 on the right side of wall, is provided with velocity sensor 17 on the right side of dolly 19, on the right side of dolly 19 antetheca, is provided with control
Device 16 processed, dolly 19 left wall is provided with the first bracing wire 21 and electronic reel 23, and the first bracing wire 21 is positioned at electronic reel 23
Rear, the first bracing wire 21 lower end is provided with the first iron ball 22, and electronic reel 23 is wound with the second bracing wire 24, and the 3rd track 4 is right
End is provided with bronze gong 3, is provided with the first support 5 on the right side of the 3rd track 4, and the first support 5 inner top is provided with the 3rd bracing wire 6, the
Three bracing wire 6 lower ends connect the second iron ball 7, is disposed with the first elastic component 9, triangle on front side of the second track 2 from left to right
Support the 10, second elastic component 25 and paint case 11, triangular supports 10 rear end is hingedly connected with swing arm 8, before the second bracing wire 24
End is connected with swing arm 8, and the rear end of the first elastic component 9 and the second elastic component 25 is all connected with swing arm 8, cuts with scissors on the right side of swing arm 8
Being connected to push rod 15 in succession, be provided with piston 12 in paint case 11, push rod 15 front end is connected with piston 12, arranges on the right side of paint case 11
Having stereoplasm tube 13, stereoplasm tube 13 rear end to be provided with shower nozzle 14, electronic reel 23, sound transducer 18 and velocity sensor 17 are equal
It is connected with controller 16 respectively.
Also including protective cover 30, controller 16 periphery is provided with protective cover 30.
Also include tape measure 31, on front side of the 3rd track 4, be provided with tape measure 31.
Also including oscillating cylinder 32, stereoplasm tube 13 is provided with oscillating cylinder 32, oscillating cylinder 32 is with controller 16 even
Connect.
The material of the first support 5 is Q235 steel.
First bracing wire the 21, second bracing wire 24 and the 3rd bracing wire 6 are steel wire rope.
First elastic component 9 is spring.
Operation principle: originally, the second bracing wire 24 is in relaxed state, and paint case 11, built with appropriate paint, works as people
When needing to carry out physics teaching experiment, dolly 19 is placed on the first track 1 by people, and people applies certain effect to dolly 19
Power so that dolly 19 slides, dolly 19 through the second track 2 time, the second bracing wire 24 is in tensioned state, dolly 19 continue to
Moving right, drive the second bracing wire 24 to move right, the second bracing wire 24 drives and is moved rearwards by the left of swing arm 8, the first elastic component 9 quilt
Stretching so that move forward on the right side of swing arm 8, on the right side of swing arm 8 drive push rod 15 move forward, push rod 15 drive piston 12 to
Front movement so that piston 12 forward extrude paint case 11 in paint so that paint case 11 in paint by stereoplasm tube 13 by
Shower nozzle 14 sprays, and sprays paint the wheel of dolly 19, and when having sprayed paint, controller 16 controls electronic reel 23 and works,
Second bracing wire 24 is released so that swing arm 8 resets under the first elastic component 9 elastic reaction, and dolly 19 continues to move right,
When dolly 19 enters three tracks 4, the first iron ball 22 can tap bronze gong 3, and bronze gong 3 sends sound, reminds people to start timing,
The sound sent is analyzed by sound transducer 18, and the instruction after sound transducer 18 will be analyzed is sent to controller 16, control
Device 16 processed controls velocity sensor 17 and starts working, and now people can record speed when dolly 19 has just enter into three tracks 4
Degree.While dolly 19 continues to move right, iron staff 20 on dolly 19 can tap the second iron ball 7, and the second iron ball 7 sends sound,
When sound stops, just representing dolly 19 and stopped, reminding people to stop timing, controller 16 controls sound transducer 18 and stops
Only work, controller 16 controls electronic reel 23 and quits work, and controller 16 controls velocity sensor 17 and quits work.Dolly
19 during the 3rd track 4 moves, and the paint on wheel can leave the marking at the 3rd track 4, is convenient for people to measure dolly
19 distances travelled are it is known that initial the fastest on the 3rd track 4 of the distance that travels on the 3rd track 4 of dolly 19 and dolly 19
Degree, just can calculate the coefficient of friction of the 3rd track 4.
Because also including protective cover 30, controller 16 periphery is provided with protective cover 30, so during spray paint, can
To prevent controller 16 from being caused damaging by spray.
Because also including tape measure 31, on front side of the 3rd track 4, it is provided with tape measure 31, so more convenient people measure dolly 19
The distance travelled.
Because also including oscillating cylinder 32, stereoplasm tube 13 is provided with oscillating cylinder 32, oscillating cylinder 32 and controller
16 connect, so during spray paint, controller 16 controls oscillating cylinder 32 and works, drive stereoplasm tube 13 to swing, Ke Yikuo
The spray regime of big paint.
Because the material of the first support 5 is Q235 steel, Q235 steel is difficult to corrosion, and toughness is strong, it is possible to extend first
The service life of frame 5.
Because first bracing wire the 21, second bracing wire 24 and the 3rd bracing wire 6 are steel wire rope, steel wire rope not easy fracture and having prolongs
Malleability, it is possible to extended for the first bracing wire the 21, second bracing wire 24 and service life of the 3rd bracing wire 6.
Because the first elastic component 9 is spring, spring has high elastic limit, fatigue limit and impact flexibility, so energy
Enough extend the service life of the first elastic component 9.
The sea that controller 16 selects sea, Xiamen to be Science and Technology Ltd.'s production is S24S0T type PLC 16, outside main frame
Portion 24VDC powers, 16 tunnel inputs, 8 tunnel outputs.The definition of input/output port is: X0 is activate switch, and X1 is shutdown switch,
X2 is emergency stop switch, and X3 is sound transducer 18, and X4 is velocity sensor 17；Y0 is electronic reel 23, and Y1 is oscillating cylinder
32.According to the electric control theory figure shown in Fig. 7, those skilled in the art need not performing creative labour, by programming
Can realize controller 16 to control each parts and carry out action by above-mentioned operation principle, the dependent instruction of programming is all prior art,
Do not repeat them here.
Embodiment described above only have expressed the preferred embodiment of the present invention, and it describes more concrete and detailed, but also
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that, for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, it is also possible to making some deformation, improve and substitute, these broadly fall into this
Bright protection domain.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (7)
1. the little motor vehicle drive system of physics teaching experiment, it is characterised in that include the first track (1), the second track
(2), bronze gong (3), the 3rd track (4), the first support (5), the 3rd bracing wire (6), the second iron ball (7), swing arm (8), the first bullet
Property part (9), triangular supports (10), paint case (11), piston (12), stereoplasm tube (13), shower nozzle (14), push rod (15), control
Device (16), velocity sensor (17), sound transducer (18), dolly (19), iron staff (20), the first bracing wire (21), the first iron ball
(22), electronic reel (23), the second bracing wire (24), the second elastic component (25), the first support bar (26), the second support bar (27)
With the 3rd support bar (28), ground (29) are sequentially provided with the first support bar (26), the second support bar (27) and from left to right
Three support bars (28), the first support bar (26) upper end is provided with the first track (1), and the second support bar (27) upper end is provided with the second track
(2), the 3rd support bar (28) upper end is provided with the 3rd track (4), the first track (1) right-hand member and the second track (2) and connects, the second rail
Road (2) right-hand member and the 3rd track (4) connect, and the second track (2) is placed with dolly (19), and dolly (19) crown center is provided with
Iron staff (20), is provided with sound transducer (18) on the right side of dolly (19) rear wall, dolly (19) right side is provided with velocity sensor
(17), on the right side of dolly (19) antetheca, be provided with controller (16), dolly (19) left wall be provided with the first bracing wire (21) and electronic around
Line wheel (23), the first bracing wire (21) is positioned at the rear of electronic reel (23), and the first bracing wire (21) lower end is provided with the first iron ball
(22), electronic reel (23) being wound with the second bracing wire (24), the 3rd track (4) right-hand member is provided with bronze gong (3), the 3rd track
(4) right side is provided with the first support (5), and the first support (5) inner top is provided with the 3rd bracing wire (6), and the 3rd bracing wire (6) lower end is even
Being connected to the second iron ball (7), the second track (2) front side is disposed with the first elastic component (9), triangular supports from left to right
(10), the second elastic component (25) and paint case (11), triangular supports (10) rear end is hingedly connected with swing arm (8), and second draws
Line (24) front end is connected with swing arm (8), and the rear end of the first elastic component (9) and the second elastic component (25) is all with swing arm (8) even
Connecing, swing arm (8) right side is hingedly connected with push rod (15), is provided with piston (12) in paint case (11), push rod (15) front end with
Piston (12) connects, and paint case (11) right side is provided with stereoplasm tube (13), and stereoplasm tube (13) rear end is provided with shower nozzle (14), electronic
Reel (23), sound transducer (18) and velocity sensor (17) are connected with controller (16) respectively.
A kind of little motor vehicle drive system of physics teaching experiment the most according to claim 1, it is characterised in that also include anti-
Guard shield (30), controller (16) periphery is provided with protective cover (30).
A kind of little motor vehicle drive system of physics teaching experiment the most according to claim 1, it is characterised in that also include volume
Chi (31), the 3rd track (4) front side is provided with tape measure (31).
A kind of little motor vehicle drive system of physics teaching experiment the most according to claim 1, it is characterised in that also include pendulum
Dynamic air cylinder (32), stereoplasm tube (13) is provided with oscillating cylinder (32), and oscillating cylinder (32) is connected with controller (16).
A kind of little motor vehicle drive system of physics teaching experiment the most according to claim 1, it is characterised in that the first support
(5) material is Q235 steel.
A kind of little motor vehicle drive system of physics teaching experiment the most according to claim 1, it is characterised in that the first bracing wire
(21), the second bracing wire (24) and the 3rd bracing wire (6) are steel wire rope.
A kind of little motor vehicle drive system of physics teaching experiment the most according to claim 1, it is characterised in that the first elastic component
(9) it is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718267.3A CN106251743B (en) | 2016-08-24 | 2016-08-24 | A kind of small motor vehicle drive system of physics teaching experiment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610718267.3A CN106251743B (en) | 2016-08-24 | 2016-08-24 | A kind of small motor vehicle drive system of physics teaching experiment |
Publications (2)
| Publication Number | Publication Date |
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| CN106251743A true CN106251743A (en) | 2016-12-21 |
| CN106251743B CN106251743B (en) | 2019-01-11 |
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ID=57595549
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610718267.3A Active CN106251743B (en) | 2016-08-24 | 2016-08-24 | A kind of small motor vehicle drive system of physics teaching experiment |
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| EP1063064A3 (en) * | 1999-06-25 | 2001-07-11 | Taiyo Ltd. | 6-Degree-of freedom travelling system |
| CN201437247U (en) * | 2009-01-21 | 2010-04-14 | 重庆大学 | Robot capable of crawling cable |
| CN203102004U (en) * | 2012-11-15 | 2013-07-31 | 长安大学 | Intelligent vehicle sound tracking control device |
| CN204632195U (en) * | 2015-05-23 | 2015-09-09 | 王博然 | Teaching physics facility |
| CN204803736U (en) * | 2015-07-11 | 2015-11-25 | 李金泽 | Highway marking off car |
| CN204833830U (en) * | 2015-07-06 | 2015-12-02 | 王震海 | Stay cord drive formula is overweight, and appearance is demonstrated to weightlessness |
| CN205014893U (en) * | 2015-06-26 | 2016-02-03 | 浙江海洋学院东海科学技术学院 | Automatic target practice dolly |
| CN205068928U (en) * | 2015-11-02 | 2016-03-02 | 马传青 | Novel physical teaching device |
-
2016
- 2016-08-24 CN CN201610718267.3A patent/CN106251743B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1063064A3 (en) * | 1999-06-25 | 2001-07-11 | Taiyo Ltd. | 6-Degree-of freedom travelling system |
| CN201437247U (en) * | 2009-01-21 | 2010-04-14 | 重庆大学 | Robot capable of crawling cable |
| CN203102004U (en) * | 2012-11-15 | 2013-07-31 | 长安大学 | Intelligent vehicle sound tracking control device |
| CN204632195U (en) * | 2015-05-23 | 2015-09-09 | 王博然 | Teaching physics facility |
| CN205014893U (en) * | 2015-06-26 | 2016-02-03 | 浙江海洋学院东海科学技术学院 | Automatic target practice dolly |
| CN204833830U (en) * | 2015-07-06 | 2015-12-02 | 王震海 | Stay cord drive formula is overweight, and appearance is demonstrated to weightlessness |
| CN204803736U (en) * | 2015-07-11 | 2015-11-25 | 李金泽 | Highway marking off car |
| CN205068928U (en) * | 2015-11-02 | 2016-03-02 | 马传青 | Novel physical teaching device |
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| Publication number | Publication date |
|---|---|
| CN106251743B (en) | 2019-01-11 |
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