CN109637296A - A kind of momentum theorem experimental provision for rational mechanics - Google Patents
A kind of momentum theorem experimental provision for rational mechanics Download PDFInfo
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- CN109637296A CN109637296A CN201811642650.0A CN201811642650A CN109637296A CN 109637296 A CN109637296 A CN 109637296A CN 201811642650 A CN201811642650 A CN 201811642650A CN 109637296 A CN109637296 A CN 109637296A
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- laboratory table
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- experimental provision
- momentum theorem
- rational mechanics
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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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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of momentum theorem experimental provisions for rational mechanics, including laboratory table, angle adjusting mechanism is equipped in the laboratory table, the upper end of the laboratory table is rotatably connected to the slide plate matched with angle adjusting mechanism, dotted timer and car body are installed on the slide plate, the upper end of the laboratory table is provided tiltedly with pulley, and paper slip is connected between the car body and dotted timer, and the side of the laboratory table is equipped with the pouring weight connecting with car body by long line.Structure of the invention is reasonable, convenient for the tilt angle of adjusting slider, to carry out area's experimental conditions under different angle, can effectively avoid falling off for pouring weight.
Description
Technical field
The present invention relates to rational mechanics technical fields more particularly to a kind of momentum theorem for rational mechanics to test dress
It sets.
Background technique
Momentum theorem is a stronger knowledge point of application in rational mechanics, is the important foundation reason in dynamics
One of by, it has a wide range of applications in many lives and engineering field.It probes between momentum theorem and the conservation of energy at present
Experimental teaching is usually needed when relationship, the device of experimental teaching at present generally uses pouring weight that trolley is pulled to slide on slide plate, band
Dynamic paper slip slides on dotted timer to be tested.
Existing instructional device is not easy to the angle of adjusting slider, so that the experimental conditions under different angle are carried out, and
Pouring weight generally uses the form of counterweight or Sand Bucket at present, and this form is easy to fall, and leads to the failure of an experiment.
Summary of the invention
The purpose of the present invention is to solve disadvantage existing in the prior art, and propose a kind of for rational mechanics
Momentum theorem experimental provision, is convenient for the tilt angle of adjusting slider, so that area's experimental conditions under different angle are carried out, it can
Effectively avoid falling off for pouring weight.
To achieve the goals above, present invention employs following technical solutions:
A kind of momentum theorem experimental provision for rational mechanics, including laboratory table, the laboratory table is interior to be equipped with angle tune
Mechanism is saved, the upper end of the laboratory table is rotatably connected to the slide plate matched with angle adjusting mechanism, is equipped on the slide plate
Dotted timer and car body, the upper end of the laboratory table are provided tiltedly with pulley, are connected between the car body and dotted timer
Paper slip, the side of the laboratory table are equipped with the pouring weight connecting with car body by long line.
Preferably, the angle adjusting mechanism includes the device chamber being arranged in laboratory table, and the intracavitary rotation of described device connects
It is connected to threaded rod, sliding block is threaded on the threaded rod, side wall and the device chamber of the sliding block are slidably connected, the sliding block
Upper end be fixed with support rod, the upper end of the support rod through device chamber and is rotatably connected to idler wheel, and the lower end of the slide plate is equipped with
Sliding slot corresponding with idler wheel, the side wall of the laboratory table are equipped with slot, turn matched with threaded rod are equipped in the slot
Motivation structure.
Preferably, the rotating mechanism includes the shaft being rotatably connected on slot inner wall, described to turn the tip of the axis extension
It is intracavitary to device and be fixed with first bevel gear, it is fixed on the threaded rod and the intermeshing second cone tooth of first bevel gear
Wheel, one end that the shaft is located in slot slidably connect knob, and the opposite side wall of the knob is respectively and fixedly provided with limit plate, institute
The inner wall surrounding for stating slot is equipped with multiple limiting slots matched with limit plate.
Preferably, it is equipped with bar shaped chamber in the slide plate, is fixed with slide bar between the inner wall of the bar shaped chamber, on the slide bar
It is arranged with follow block, spring is arranged on the slide bar, the inner top of the bar shaped chamber is equipped with strip shape gob, and the upper end of the follow block is passed through
Wear strip shape gob.
Preferably, the side wall of the pouring weight is equipped with multiple placing grooves being obliquely installed, and is placed with and matches in the placing groove
Pouring weight.
Preferably, the weight of multiple clump weights is equal.
Compared with prior art, the present invention has the advantages that:
1, it is provided with angle adjusting mechanism and rotating mechanism, convenient for the tilt angle of user's adjusting slider, to carry out
Experiment under different angle is convenient for comparing.
2, the side wall of pouring weight is equipped with multiple placing grooves being obliquely installed, and is placed with clump weight in placing groove, convenient for load with
It takes, and is not easy to fall.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the momentum theorem experimental provision for rational mechanics proposed by the present invention；
Fig. 2 is structure amplification signal at a kind of A for the momentum theorem experimental provision of rational mechanics proposed by the present invention
Figure；
Fig. 3 is structure amplification signal at a kind of B for the momentum theorem experimental provision of rational mechanics proposed by the present invention
Figure.
In figure: 1 threaded rod, 2 second bevel gears, 3 first bevel gears, 4 shafts, 5 paper slips, 6 dotted timers, 7 support rods, 8
Car body, 9 slide plates, 10 long lines, 11 pulleys, 12 clump weights, 13 pouring weights, 14 laboratory tables, 15 slots, 16 limit plates, 17 limiting slots, 18
Knob, 19 follow blocks, 20 springs.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-3, a kind of momentum theorem experimental provision for rational mechanics, including laboratory table 14, in laboratory table 14
Equipped with angle adjusting mechanism, the upper end of laboratory table 14 is rotatably connected to the slide plate 9 matched with angle adjusting mechanism, angular adjustment
Mechanism includes the device chamber being arranged in laboratory table 14, and device is intracavitary to be rotatably connected to threaded rod 1, is threadedly coupled on threaded rod 1
There is sliding block, side wall and the device chamber of sliding block are slidably connected, and the upper end of sliding block is fixed with support rod 7, and device chamber is run through in the upper end of support rod 7
And it is rotatably connected to idler wheel, the lower end of slide plate 9 is equipped with sliding slot corresponding with idler wheel, and the side wall of laboratory table 14 is equipped with slot 15,
The rotating mechanism matched with threaded rod 1 is equipped in slot 15, threaded rod 1 is moved up with movable slider, and sliding block drives support rod 7 to move up,
To be moved up by idler wheel against slide plate 9, it can be adjusted to any angle as needed, meet experiment demand.
Rotating mechanism includes the shaft 4 being rotatably connected on 15 inner wall of slot, and it is intracavitary simultaneously that the end of shaft 4 extends to device
It is fixed with first bevel gear 3, is fixed on threaded rod 1 and is located at the intermeshing second bevel gear 2 of first bevel gear 3, shaft 4
One end in slot 15 slidably connects knob 18, and the opposite side wall of knob 18 is respectively and fixedly provided with limit plate 16, the inner wall of slot 15
Around being equipped with multiple limiting slots 17 matched with limit plate 16, knob 18 is pulled out out of slot 15 and rotating, 4 turns of shaft are driven
Dynamic, shaft 4 drives first bevel gear 3 to rotate, and first bevel gear 3 drives second bevel gear 2 to rotate, and second bevel gear 2 drives spiral shell
Rasp bar 1 rotates, and knob 18 is got back into after adjusting, is inserted into limit plate 16 and completes to fix in the limiting slot 17 of corresponding position.
Dotted timer 6 and car body 8 be installed on slide plate 9, the upper end of laboratory table 14 is provided tiltedly with pulley 11, car body 8 with
Paper slip 5 is connected between dotted timer 6, the side of laboratory table 14, which is equipped with, passes through the pouring weight 13 that long line 10 is connect with car body 8, sliding
It is equipped with bar shaped chamber in plate 9, is fixed with slide bar between the inner wall of bar shaped chamber, follow block 19 is arranged on slide bar, is arranged with bullet on slide bar
Spring 20, the inner top of bar shaped chamber are equipped with strip shape gob, and the upper end of follow block 19 is supported through strip shape gob by the elastic reaction of spring 20
Follow block 19, can car body 8 complete test when car body 8 is buffered, avoid it from going out slide plate 9.
The side wall of pouring weight 13 is equipped with multiple placing grooves being obliquely installed, and is placed with clump weight 12, Duo Gepei in placing groove
The weight of pouring weight 12 is equal, and when experiment can as needed take out clump weight 12 out of placing groove, to change weight, is tilted
The placing groove of setting can be convenient for the clump weight 12 that loads and take, and not easily to fall off during the experiment, easy to use.
In present invention, it is desirable to only need to pull out knob 18 out of slot 15 when carrying out the adjusting of angle and rotate, shaft is driven
4 rotations, shaft 4 drive first bevel gear 3 to rotate, and first bevel gear 3 drives second bevel gear 2 to rotate, and second bevel gear 2 drives
Threaded rod 1 rotates, and threaded rod 1 is moved up with movable slider, and sliding block drives support rod 7 to move up, thus moved up by idler wheel against slide plate 9,
It can be adjusted to any angle as needed, meet experiment demand, knob 18 is got back into after adjusting, make the insertion pair of limit plate 16
It answers and completes to fix in the limiting slot 17 of position；Clump weight 12 can be taken out out of placing groove as needed when experiment, to change
Weight, the placing groove being obliquely installed can be convenient for the clump weight 12 that loads and take, and not easily to fall off during the experiment, use
It is convenient.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (6)
1. a kind of momentum theorem experimental provision for rational mechanics, including laboratory table (14), which is characterized in that the laboratory table
(14) angle adjusting mechanism is equipped in, the upper end of the laboratory table (14) is rotatably connected to the cunning matched with angle adjusting mechanism
Plate (9) is equipped with dotted timer (6) and car body (8) on the slide plate (9), and the upper end of the laboratory table (14) is provided tiltedly with
Pulley (11) is connected with paper slip (5) between the car body (8) and dotted timer (6), and the side of the laboratory table (14) is equipped with
Pass through the pouring weight (13) that long line (10) are connect with car body (8).
2. a kind of momentum theorem experimental provision for rational mechanics according to claim 1, which is characterized in that the angle
Spending regulating mechanism includes the device chamber being arranged in laboratory table (14), and described device is intracavitary to be rotatably connected to threaded rod (1), described
Sliding block is threaded on threaded rod (1), side wall and the device chamber of the sliding block are slidably connected, and the upper end of the sliding block is fixed with
The upper end of support rod (7), the support rod (7) through device chamber and is rotatably connected to idler wheel, and the lower end of the slide plate (9) is equipped with and rolling
Corresponding sliding slot is taken turns, the side wall of the laboratory table (14) is equipped with slot (15), is equipped with and threaded rod (1) in the slot (15)
The rotating mechanism matched.
3. a kind of momentum theorem experimental provision for rational mechanics according to claim 2, which is characterized in that described turn
Motivation structure includes the shaft (4) being rotatably connected on slot (15) inner wall, and it is intracavitary simultaneously that the end of the shaft (4) extends to device
It is fixed with first bevel gear (3), is fixed on the threaded rod (1) and first bevel gear (3) intermeshing second bevel gear
(2), the shaft (4) is located at one end in slot (15) and slidably connects knob (18), the opposite side wall of the knob (18)
It is respectively and fixedly provided with limit plate (16), the inner wall surrounding of the slot (15) is equipped with multiple limiting slots matched with limit plate (16)
(17)。
4. a kind of momentum theorem experimental provision for rational mechanics according to claim 1, which is characterized in that the cunning
It is equipped with bar shaped chamber in plate (9), is fixed with slide bar between the inner wall of the bar shaped chamber, follow block (19), institute is arranged on the slide bar
It states and is arranged on slide bar spring (20), the inner top of the bar shaped chamber is equipped with strip shape gob, and item is run through in the upper end of the follow block (19)
Shape mouth.
5. a kind of momentum theorem experimental provision for rational mechanics according to claim 1, which is characterized in that described heavy
The side wall of block (13) is equipped with multiple placing grooves being obliquely installed, and is placed with clump weight (12) in the placing groove.
6. a kind of momentum theorem experimental provision for rational mechanics according to claim 5, which is characterized in that Duo Gesuo
The weight for stating clump weight (12) is equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642650.0A CN109637296A (en) | 2018-12-29 | 2018-12-29 | A kind of momentum theorem experimental provision for rational mechanics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642650.0A CN109637296A (en) | 2018-12-29 | 2018-12-29 | A kind of momentum theorem experimental provision for rational mechanics |
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| Publication Number | Publication Date |
|---|---|
| CN109637296A true CN109637296A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811642650.0A Pending CN109637296A (en) | 2018-12-29 | 2018-12-29 | A kind of momentum theorem experimental provision for rational mechanics |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203562121U (en) * | 2013-11-13 | 2014-04-23 | 杨亮 | Physical-trolley instantaneous speed demonstration instrument |
| CN205194156U (en) * | 2015-11-24 | 2016-04-27 | 亓强 | Student is with friction force measuring device |
| CN206805869U (en) * | 2017-03-29 | 2017-12-26 | 李彦甫 | A kind of inclined plane demonstrating device for senior middle school physics teaching |
| CN206805871U (en) * | 2017-04-25 | 2017-12-26 | 侯波 | A kind of high school physicses friction force demonstration contrast experiment's device |
| CN207123977U (en) * | 2017-06-27 | 2018-03-20 | 周金中 | Object linear motion situation synchronous recording tester |
| CN207216925U (en) * | 2017-07-14 | 2018-04-10 | 李佳薇 | A kind of experimental provision for being used to probe into relation between acceleration and power, quality |
| CN208110883U (en) * | 2018-01-16 | 2018-11-16 | 赵加来 | It is a kind of for verifying the experimental provision of Newton interpolation algorithm |
-
2018
- 2018-12-29 CN CN201811642650.0A patent/CN109637296A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203562121U (en) * | 2013-11-13 | 2014-04-23 | 杨亮 | Physical-trolley instantaneous speed demonstration instrument |
| CN205194156U (en) * | 2015-11-24 | 2016-04-27 | 亓强 | Student is with friction force measuring device |
| CN206805869U (en) * | 2017-03-29 | 2017-12-26 | 李彦甫 | A kind of inclined plane demonstrating device for senior middle school physics teaching |
| CN206805871U (en) * | 2017-04-25 | 2017-12-26 | 侯波 | A kind of high school physicses friction force demonstration contrast experiment's device |
| CN207123977U (en) * | 2017-06-27 | 2018-03-20 | 周金中 | Object linear motion situation synchronous recording tester |
| CN207216925U (en) * | 2017-07-14 | 2018-04-10 | 李佳薇 | A kind of experimental provision for being used to probe into relation between acceleration and power, quality |
| CN208110883U (en) * | 2018-01-16 | 2018-11-16 | 赵加来 | It is a kind of for verifying the experimental provision of Newton interpolation algorithm |
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Application publication date: 20190416 |
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| RJ01 | Rejection of invention patent application after publication |