CN202853846U - Three-line pendulum lower disc - Google Patents
Three-line pendulum lower disc Download PDFInfo
- Publication number
- CN202853846U CN202853846U CN 201220545957 CN201220545957U CN202853846U CN 202853846 U CN202853846 U CN 202853846U CN 201220545957 CN201220545957 CN 201220545957 CN 201220545957 U CN201220545957 U CN 201220545957U CN 202853846 U CN202853846 U CN 202853846U
- Authority
- CN
- China
- Prior art keywords
- line
- lower wall
- lower disc
- spirit
- line pendulum
- 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
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model discloses a three-line pendulum lower disc, which is convenient in level adjustment and can reduce measurement error. The three-line pendulum lower disc comprises a lower disc (1), a spirit level (2), and suspension centers (4), wherein the lower disc (1) is provided with a fine bar-shaped spirit level (3), the middle portion of the fine bar-shaped spirit level (3) is provided with a fine red line, and the fine red line coincides with the center of a connection line between the two suspension centers (4). The three-line pendulum disc is suitable to measure the rotational inertia of an object in a physical experiment.
Description
Technical field
The utility model relates to a kind of three-line pendulum of surveying the moment of inertia of object, in particular, relates to a kind of three-line pendulum lower wall.
Background technology
Three-line pendulum is the experimental apparatus of often using during Measuring Moment of Inertia Using in the Physical Experiment, existing three-line pendulum is three knobs that coil by adjusting when adjusting the lower wall level, change the length of three cycloids, until the bubble in the lower wall spirit-leveling instrument is positioned at the middle.And the three-line pendulum lower wall only has a spirit-leveling instrument in the center at present, is not easy to regulate, and error is also larger.Up to the present, a kind of three-line pendulum lower wall with two spirit-leveling instruments not yet appears.
The utility model content
The phenomenon that the utility model is difficult to regulate the lower wall level and easily produces error when operating for existing three-line pendulum, and a kind of three-line pendulum lower wall level of being convenient to regulate is provided, also can reduce the three-line pendulum lower wall of measuring error.
Three-line pendulum lower wall of the present utility model comprises lower wall, spirit-leveling instrument, suspension point, and described lower wall is provided with a fine strip shape spirit-leveling instrument, and the middle part of described fine strip shape spirit-leveling instrument is provided with a The Thin Red Line, the center superposition of described The Thin Red Line and two suspension point lines.
The beneficial effects of the utility model: (1) simple in structure, be easy to make; (2) practical, as to be convenient to regulate three-line pendulum lower wall level reduces the error of measuring object rotation inertia.
Description of drawings
Fig. 1 is vertical view of the present utility model;
Among the figure: lower wall 1, spirit-leveling instrument 2, fine strip shape spirit-leveling instrument 3, suspension point 4.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Three-line pendulum lower wall of the present utility model mainly is comprised of lower wall 1, spirit-leveling instrument 2, fine strip shape spirit-leveling instrument 3 and suspension point 4.
Described lower wall 1 is provided with a fine strip shape spirit-leveling instrument 3, and the middle part of described fine strip shape spirit-leveling instrument 3 is provided with a The Thin Red Line, the center superposition of described The Thin Red Line and two suspension point 4 lines.
During use, at first adjust the suspension wire that connects on the suspension point 4 on fine strip shape spirit-leveling instrument 3 both sides, make the bubble in the fine strip shape spirit-leveling instrument 3 concordant with The Thin Red Line, then keep the suspension wire of connection on these two suspension points 4 motionless, the suspension wire of adjusting on another suspension point 4 makes the bubble of spirit-leveling instrument 2 be positioned at the middle.
Claims (2)
1. a three-line pendulum lower wall comprises lower wall (1), spirit-leveling instrument (2), suspension point (4), it is characterized in that, described lower wall (1) is provided with a fine strip shape spirit-leveling instrument (3), and there is a The Thin Red Line at the middle part of described fine strip shape spirit-leveling instrument (3).
2. three-line pendulum lower wall according to claim 1 is characterized in that, the center superposition of described The Thin Red Line and two suspension points (4) line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220545957 CN202853846U (en) | 2012-10-24 | 2012-10-24 | Three-line pendulum lower disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220545957 CN202853846U (en) | 2012-10-24 | 2012-10-24 | Three-line pendulum lower disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202853846U true CN202853846U (en) | 2013-04-03 |
Family
ID=47985030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220545957 Expired - Fee Related CN202853846U (en) | 2012-10-24 | 2012-10-24 | Three-line pendulum lower disc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202853846U (en) |
-
2012
- 2012-10-24 CN CN 201220545957 patent/CN202853846U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20131024 |