CN204177526U - A kind of three-line pendulum lower wall - Google Patents
A kind of three-line pendulum lower wall Download PDFInfo
- Publication number
- CN204177526U CN204177526U CN201420668464.5U CN201420668464U CN204177526U CN 204177526 U CN204177526 U CN 204177526U CN 201420668464 U CN201420668464 U CN 201420668464U CN 204177526 U CN204177526 U CN 204177526U
- Authority
- CN
- China
- Prior art keywords
- lower wall
- line
- scale mark
- leveling instrument
- circular spirit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of three-line pendulum lower wall, aim to provide one and be convenient to regulate three-line pendulum lower wall level, also can reduce the three-line pendulum lower wall of measuring error.Comprise lower wall, lower wall is along the circumferential direction evenly provided with three suspension points, and the center of lower wall is provided with circular spirit-leveling instrument, and described circular spirit-leveling instrument is provided with a scale mark, the extended line of this scale mark passes through a suspension point, and vertical with the line between another two suspension points.Scale mark is positioned at the centre position of circular spirit-leveling instrument.The utility model is applicable to the moment of inertia measuring object in Physical Experiment.
Description
technical field:
The utility model relates to a kind of three-line pendulum instrument surveying the moment of inertia of object, in particular, relates to a kind of three-line pendulum lower wall.
background technology:
The experimental apparatus often used when three-line pendulum is Measuring Moment of Inertia Using in Physical Experiment, existing three-line pendulum is three knobs by adjustment is coiled when adjusting lower wall level, change the length of three cycloids, until the bubble in the circular spirit-leveling instrument of lower wall is positioned at middle (middle of usual circular spirit-leveling instrument is provided with a circle, and its diameter is close with bubble diameter).But in the process regulating lower wall level, owing to needing the length of change three cycloids, bubble could be adjusted to the middle of circular spirit-leveling instrument, be therefore not easy to regulate, error is also larger.
summary of the invention:
When the utility model is for existing three-line pendulum operation, is difficult to regulate lower wall level and the phenomenon easily producing error, and provides one to be convenient to regulate three-line pendulum lower wall level, also can reduce the three-line pendulum lower wall of measuring error.
concrete technical scheme of the present utility model is as follows:
A kind of three-line pendulum lower wall, comprises lower wall, lower wall is along the circumferential direction evenly provided with three suspension points, the center of lower wall is provided with circular spirit-leveling instrument, described circular spirit-leveling instrument is provided with a scale mark, and the extended line of this scale mark passes through a suspension point 33, and vertical with the line between another two suspension points.
Further design of the present utility model is:
Scale mark is positioned at the centre position of circular spirit-leveling instrument.
the beneficial effects of the utility model are as follows:
1. three-line pendulum lower disc of the present utility model simple, be easy to manufacture, economical and practical.
2. the utility model is practical, is convenient to the lower wall level regulating three-line pendulum, reduces the error measuring object rotation inertia.
accompanying drawing illustrates:
fig. 1it is vertical view of the present utility model.
Fig. 2 is line schematic diagram of the present utility model.
In figure: 1-lower wall, 2-circular spirit-leveling instrument, 31-suspension point, 32-suspension point, 33-suspension point, 4-scale mark.
embodiment:
Below in conjunction with accompanying drawing, the utility model is further described.
As shown in Figure 1 and Figure 2, three-line pendulum lower wall of the present utility model is primarily of lower wall 1, circular spirit-leveling instrument 2 and three suspension points, and suspension point 31, suspension point 32 and suspension point 33 form.Described circular spirit-leveling instrument is provided with a thin scale mark 4, and this scale mark 4 is positioned at the centre position of circular spirit-leveling instrument.
Described scale mark 4 is with wherein suspension point 31 is vertical with the line of suspension point 32, and the extended line of this scale mark is by another suspension point 33.
During use, first the suspension wire that the suspension point of described thin scale mark both sides connects is adjusted, bubble in circular spirit-leveling instrument 2 is divided equally by scale mark, then keep suspension wire that these two suspension points connect motionless, the suspension wire adjusted on another suspension point 33 makes the bubble in circular spirit-leveling instrument 2 be positioned at the middle of circle on circular spirit-leveling instrument 2.Easy and simple to handle, service precision is high.
Claims (2)
1. a three-line pendulum lower wall, comprise lower wall (1), lower wall (1) is along the circumferential direction evenly provided with three suspension points, the center of lower wall is provided with circular spirit-leveling instrument (2), it is characterized in that: described circular spirit-leveling instrument is provided with a scale mark (4), the extended line of this scale mark passes through a suspension point (33), and vertical with the line between another two suspension points.
2. three-line pendulum lower wall according to claim 1, is characterized in that: scale mark (4) is positioned at the centre position of circular spirit-leveling instrument (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420668464.5U CN204177526U (en) | 2014-11-11 | 2014-11-11 | A kind of three-line pendulum lower wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420668464.5U CN204177526U (en) | 2014-11-11 | 2014-11-11 | A kind of three-line pendulum lower wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204177526U true CN204177526U (en) | 2015-02-25 |
Family
ID=52566332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420668464.5U Expired - Fee Related CN204177526U (en) | 2014-11-11 | 2014-11-11 | A kind of three-line pendulum lower wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204177526U (en) |
-
2014
- 2014-11-11 CN CN201420668464.5U patent/CN204177526U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20161111 |