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Level

A level and datum technology, applied in the direction of instruments, measuring devices, surveying and navigation, etc., can solve problems such as measurement errors, and achieve the effect of suppressing manufacturing costs and high-precision measurement

Inactive Publication Date: 2014-12-24
梶木 干雄
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if the size of the air bubbles changes due to the influence of the temperature of the measurement environment, the amount of change will become a measurement error

Method used

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no. 1 Embodiment approach

[0059] refer to Figure 1 ~ Figure 3 The first embodiment of the present invention will be described.

[0060] Such as figure 1 As shown, the level 1 of the present embodiment includes: a measurement base 2 provided with a reference surface 2A that can be brought into contact with a measurement surface not shown; and a main body base 3 that is movably placed on the measurement base. 2; and the vial main body 5, which is placed on the main body base 3.

[0061] The bubble tube body 5 is provided with: a first bubble tube body 6 having a first bubble tube 6A and a second bubble tube 6B; and a second bubble tube body 7 having the same shape as the first bubble tube body 6 and having The third bubble tube 7A and the fourth bubble tube 7B.

[0062] The first bubble tube 6A and the second bubble tube 6B are formed as a pair, and a liquid 8 and a first bubble 10 are enclosed therein. The base end sides of the first bubble tube 6A and the second bubble tube 6B are connected to eac...

no. 2 Embodiment approach

[0083] Next, refer to Figure 4 The second embodiment will be described.

[0084] In addition, the same code|symbol is attached|subjected to the same component as the said 1st Embodiment, and description is abbreviate|omitted.

[0085] The difference between the second embodiment and the first embodiment is that the level 20 of this embodiment includes a bubble tube in which the first bubble tube main body 6 and the second bubble tube main body 7 of the level 1 of the first embodiment are integrated. Subject 21.

[0086]That is, the base end side of the third bubble tube 7A and the base end side of the fourth bubble tube 7B communicate with the base end side of the first bubble tube 6A and the base end side of the second bubble tube 6B to be integrally connected. The air cells 10 and the second air cells 11 are arranged as one air cell 22 .

[0087] Next, the action of the level 20 of this embodiment will be described.

[0088] The level 20 of this embodiment also measures...

no. 3 Embodiment approach

[0093] Next, refer to Figure 5 The third embodiment will be described.

[0094] In addition, the same code|symbol is attached|subjected to the same component as the above-mentioned other embodiment, and description is abbreviate|omitted.

[0095] The third embodiment differs from the second embodiment in that the vial main body 31 of the level 30 of this embodiment includes a fifth vial 31A and a sixth vial 31B.

[0096] The fifth bubble tube 31A and the sixth bubble tube 31B are formed as a pair, and the base ends thereof are connected in communication with the base end sides of the first bubble tube 6A and the base end sides of the second bubble tube 6B. Furthermore, the fifth bubble tube 31A and the sixth bubble tube 31B are symmetrically arranged inside the first bubble tube 6A and inside the second bubble tube 6B with respect to the first central axis C1, and the liquid 8 and one bubble 22 are sealed therein. That is, in such a manner that the distance between the firs...

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Abstract

A level (1) is provided with: a measurement base (2) in which a reference plane (2A) that is brought into contact with a measurement surface is disposed; and a first bubble tube (6A) and a second bubble tube (6B) which form a pair and are mounted on the measurement base (2) with liquid (8) and one first air bubble (10) being sealed therein and the base end sides thereof being connected to each other so as to communicate with each other such that the first air bubble (10) is movable. This level (1) can measure the inclination state without being affected by a change in the size of the air bubble sealed in the bubble tubes, thereby making it possible to facilitate measurement work and suppress the production cost.

Description

technical field [0001] The invention relates to a level instrument. Background technique [0002] Conventionally, a scale is marked on the surface of a level composed of a single bubble tube, and the amount of movement of the bubble due to the inclination of the measurement surface is read using the scale to measure the amount of inclination. The scale is expressed as 0.02 mm / m, for example, as the amount of inclination=sensitivity per scale, and the amount of inclination is measured from the movement amount of air bubbles corresponding to the scale. [0003] However, if the size of the air bubbles changes due to the influence of the temperature of the measurement environment, the amount of change becomes a measurement error. That is, in order to accurately measure the amount of inclination, the size of the air bubbles at the time of measurement must be a predetermined size. Therefore, in order to perform accurate measurement, JIS B7510 clearly states that the size of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C9/26
CPCG01C9/26G01C9/34
Inventor 梶木干雄
Owner 梶木 干雄