CN209312295U - A kind of acceleration of gravity measurement apparatus for demonstrating - Google Patents
A kind of acceleration of gravity measurement apparatus for demonstrating Download PDFInfo
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- CN209312295U CN209312295U CN201822168247.0U CN201822168247U CN209312295U CN 209312295 U CN209312295 U CN 209312295U CN 201822168247 U CN201822168247 U CN 201822168247U CN 209312295 U CN209312295 U CN 209312295U
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- paper slip
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Abstract
A kind of acceleration of gravity measurement apparatus for demonstrating, belong to physical field, including iron stand, dotted timer, paper slip and weight, dotted timer is fixedly mounted in the lower part of the iron stand, the paper slip passes through dotted timer, the lower end of the paper slip is connect with weight, cross bar is arranged in the top of the iron stand, vertical through groove is set on the cross bar, the paper slip passes through through groove, pressing plate is set in the through groove, pressing plate one end fixed with mobile bar is fixedly connected, through-hole is set on the cross bar, the other end of the mobile bar passes through through-hole, pulling block is arranged in the other end of the mobile bar, spring is set between the pulling block and cross bar, the spring is located at the periphery of mobile bar, graduation mark is arranged in the middle part of the paper slip.The utility model can paper slip top without fingertip grasp so that human factor be avoided to impact test, to reduce experiment number, improve efficiency.
Description
Technical field
The utility model belongs to physical field, and specifically a kind of acceleration of gravity measures apparatus for demonstrating.
Background technique
Physics subject is one of the power for promoting current social development, and many phenomenons can also use physics in daily life
Knowledge interpretation, current senior middle school, junior middle school also all open up physics lesson, understand object in junior middle school's senior middle school physics teaching for the ease of student
Knowledge is managed, is usually convenient for student to understand by testing, and deepens the impression of student, people teaches the required chapter 2 of high school physics even
The experiment that the research correspondence of change speed linear motion is has the related experiment for probing into the object movement of falling object, generally by weight
By self gravity drive paper slip pass through dotted timer by by weight in freely falling body dotted timer on paper slip
The spacing between point left is added according to the acceleration of gravity for calculating weight by poor method by weight free-fall testing
Understanding of the deep student to acceleration of gravity, but at present during the experiment, due to being then manpower holding paper slip top is unclamped
It is tested, often occurs leading to paper slip because of reasons such as hand tremors and non-rectilinear falls, to make to get a little not straight at one
On line, often to carry out multi-pass operation just can get the continuous point in straight line, and efficiency is lower.
Utility model content
The utility model provides a kind of acceleration of gravity measurement apparatus for demonstrating, to solve defect in the prior art.
The utility model is achieved by the following technical programs:
A kind of acceleration of gravity measurement apparatus for demonstrating, including iron stand, dotted timer, paper slip and weight, it is described
The lower part of iron stand is fixedly mounted dotted timer, and the paper slip passes through dotted timer, the lower end of the paper slip with again
Cross bar is arranged in object connection, the top of the iron stand, and vertical through groove is arranged on the cross bar, and the paper slip passes through saturating
Slot, the through groove is interior to be arranged pressing plate, and pressing plate one end fixed with mobile bar is fixedly connected, is arranged on the cross bar
Through-hole, the other end of the mobile bar pass through through-hole, and pulling block, the pulling block and cross is arranged in the other end of the mobile bar
Spring is set between bar, the spring is located at the periphery of mobile bar, and graduation mark is arranged in the middle part of the paper slip.
A kind of acceleration of gravity as described above measures apparatus for demonstrating, the two sides up and down at the dotted timer paper feed
Respectively one limitting casing of setting.
A kind of acceleration of gravity as described above measures apparatus for demonstrating, and top setting swashs at the dotted timer paper feed
Light pen.
A kind of acceleration of gravity as described above measures apparatus for demonstrating, and the string bag is arranged in the lower section of the weight.This is practical
Novel advantage is: the utility model can paper slip top be not necessarily to fingertip grasp, so that human factor be avoided to cause shadow to test
It rings, to reduce experiment number, improves efficiency.The utility model passes through pulling block when in use and pulls out mobile bar,
The top of paper slip is passed through into through groove simultaneously, then unclamps pulling block, pressing plate, mobile bar and pulling block reset under the action of the spring,
It is that pulling block is pulled outwardly to paper slip of sening as an envoy to do freely falling body fortune with weight starting experiment to make pressing plate push down the top of paper slip
It is dynamic, but also can be tested by way of cutting paper slip, above two method is less during the experiment to be will appear
There is a situation where lateral displacements for paper slip, to reduce experiment number, improve conventional efficient；Talking about graduation mark simultaneously can
Distance between points is quickly measured, no longer needs to measure by graduated scale, easy to operate, the lower section of weight easy to use
The string bag is set.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the first structure diagram of the utility model；
Fig. 2 is second structural schematic diagram of the utility model；
Fig. 3 is the partial enlarged view in the portion I of Fig. 2；
Fig. 4 is the partial enlarged view in the portion II of Fig. 2.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
A kind of acceleration of gravity measurement apparatus for demonstrating, including iron stand 1, dotted timer 2, paper slip 3 and weight 4, institute
Dotted timer 2 is fixedly mounted in the lower part for the iron stand 1 stated, and the paper slip 3 passes through dotted timer 2, the paper slip 3
Lower end is connect with weight 4, and cross bar 5 is arranged in the top of the iron stand 1, and vertical through groove 6, institute is arranged on the cross bar 5
The paper slip 3 stated passes through through groove 6, and pressing plate 7 is arranged in the through groove 6, and the pressing plate 7 one end fixed with mobile bar 8 is fixed
Connection, is arranged through-hole 9 on the cross bar 5, and the other end of the mobile bar 8 passes through through-hole 9, the mobile bar 8 it is another
Pulling block 10 is arranged in one end, and spring 11 is set between the pulling block 10 and cross bar 5, and the spring 11 is located at the outer of mobile bar 8
Graduation mark 12 is arranged in the middle part in week, the paper slip 3.The utility model passes through pulling block 10 when in use and is pulled outwardly mobile bar 8
It is dynamic, while the top of paper slip 3 is passed through into through groove 6, then unclamp pulling block 10, under the action of spring 11 pressing plate 7, mobile bar 8 with
And pulling block 10 resets, and is that pulling block 10 is pulled outwardly paper slip of sening as an envoy to starting experiment so that pressing plate 7 be made to push down the top of paper slip 3
3 do the movement of falling object with weight 4, but also can be tested by way of cutting paper slip 3, and above two method exists
It is less in experimentation to will appear paper slip there is a situation where lateral displacements, to reduce experiment number, improve conventional efficient；
Distance between points can quickly be measured by talking about graduation mark 12 simultaneously, no longer need to measure by graduated scale, be operated
Simply, easy to use.
Specifically, due to paper slip 3 in dropping process it some times happens that lateral displacement, in order to overcome the above problem, this
A limitting casing 13 is respectively arranged in two sides up and down at 2 paper feed of dotted timer described in embodiment.Limitting casing 13 can be to paper slip 3
Position-limiting action is played, avoids paper slip 3 that lateral displacement occurs when through dotted timer 2, it is ensured that experiment is normally carried out.
Specifically, the top due to paper slip 3 should not operate when with being aligned at 2 paper feed of dotted timer, on overcoming
Problem is stated, laser pen 14 is arranged in top at 2 paper feed of dotted timer described in the present embodiment.It can be convenient and fast by laser pen 14
It will be aligned, be easy to use at the top of paper slip 3 and 2 paper feed of dotted timer.
Further, collision is freeed with ground due to the landing of weight 4, weight 4 and ground, which is used for a long time, can all be damaged,
In order to overcome the above problem, since the landing of weight 4 frees collision with ground, weight 4 and ground, which is used for a long time, can all be damaged,
In order to overcome the above problem, the string bag 15 is arranged in the lower section of weight 4 described in the present embodiment.Weight 4 can be caught by the string bag 15,
The landing of weight 4 is avoided to free collision with ground.
Finally, it should be noted that in the description of the utility model, it is to be understood that term " top ", " bottom ", " one
End ", " other end ", " top ", " bottom end ", "upper", "lower", "left", "right", " side ", "inner", " middle part ", " center ", " two
The orientation or positional relationship of the instructions such as end " is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing this reality
It is described with novel with simplified, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.In the present invention, unless otherwise specific
Regulation and restriction, the terms such as term " installation ", " setting ", " connection ", " fixation ", " rotation connection " shall be understood in a broad sense, for example,
Can be fixedly connected, also can be to be detachably connected, or it is integral；It can be mechanical connection, also can be electrical connection；It can
It is to be connected directly, also can is indirectly connected through an intermediary the phase of the connection or two elements inside two elements
Unless otherwise restricted clearly interaction relationship for the ordinary skill in the art, can manage as the case may be
Solve the concrete meaning of above-mentioned term in the present invention.Above embodiments are only to illustrate the technical solution of the utility model,
Rather than its limitations；Although the utility model is described in detail with reference to the foregoing embodiments, the ordinary skill of this field
Personnel are it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or to part
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The spirit and scope of each embodiment technical solution of type.
Claims (4)
1. a kind of acceleration of gravity measures apparatus for demonstrating, including iron stand (1), dotted timer (2), paper slip (3) and weight
(4), dotted timer (2) are fixedly mounted in the lower part of the iron stand (1), and the paper slip (3) passes through dotted timer
(2), the lower end of the paper slip (3) is connect with weight (4), it is characterised in that: cross bar is arranged in the top of the iron stand (1)
(5), it is arranged vertical through groove (6) on the cross bar (5), the paper slip (3) passes through through groove (6), in the through groove (6)
It is arranged pressing plate (7), the pressing plate (7) one end fixed with mobile bar (8) is fixedly connected, and is arranged on the cross bar (5) logical
The other end in hole (9), the mobile bar (8) passes through through-hole (9), and pulling block (10) are arranged in the other end of the mobile bar (8),
It is set spring (11) between the pulling block (10) and cross bar (5), the spring (11) is located at the periphery of mobile bar (8), described
Paper slip (3) middle part be arranged graduation mark (12).
2. a kind of acceleration of gravity according to claim 1 measures apparatus for demonstrating, it is characterised in that: described gets timing ready
A limitting casing (13) is respectively arranged in two sides up and down at device (2) paper feed.
3. a kind of acceleration of gravity according to claim 1 measures apparatus for demonstrating, it is characterised in that: described gets timing ready
Laser pen (14) are arranged in top at device (2) paper feed.
4. a kind of acceleration of gravity according to claim 1 measures apparatus for demonstrating, it is characterised in that: the weight (4)
Lower section be arranged the string bag (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822168247.0U CN209312295U (en) | 2018-12-21 | 2018-12-21 | A kind of acceleration of gravity measurement apparatus for demonstrating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822168247.0U CN209312295U (en) | 2018-12-21 | 2018-12-21 | A kind of acceleration of gravity measurement apparatus for demonstrating |
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| Publication Number | Publication Date |
|---|---|
| CN209312295U true CN209312295U (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822168247.0U Active CN209312295U (en) | 2018-12-21 | 2018-12-21 | A kind of acceleration of gravity measurement apparatus for demonstrating |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794470A (en) * | 2019-10-24 | 2020-02-14 | 燕山大学 | Experimental device for measuring gravitational acceleration |
-
2018
- 2018-12-21 CN CN201822168247.0U patent/CN209312295U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794470A (en) * | 2019-10-24 | 2020-02-14 | 燕山大学 | Experimental device for measuring gravitational acceleration |
| CN110794470B (en) * | 2019-10-24 | 2021-05-18 | 燕山大学 | Experimental device for measuring gravitational acceleration |
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