WO2003052349A1 - Dispositif a corps tournant et dispositif a niveau gradue - Google Patents

Dispositif a corps tournant et dispositif a niveau gradue Download PDF

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Publication number
WO2003052349A1
WO2003052349A1 PCT/JP2002/012910 JP0212910W WO03052349A1 WO 2003052349 A1 WO2003052349 A1 WO 2003052349A1 JP 0212910 W JP0212910 W JP 0212910W WO 03052349 A1 WO03052349 A1 WO 03052349A1
Authority
WO
WIPO (PCT)
Prior art keywords
inner cylinder
outer cylinder
scale
bearing
cylinder
Prior art date
Application number
PCT/JP2002/012910
Other languages
English (en)
Japanese (ja)
Inventor
Seiichi Harada
Original Assignee
Seiichi Harada
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiichi Harada filed Critical Seiichi Harada
Publication of WO2003052349A1 publication Critical patent/WO2003052349A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10

Definitions

  • the present invention relates to a rotating body device in which an inner cylinder is rotatably supported by a bearing in an outer cylinder, and the bearing is completely floated in the bearing. This eliminates friction caused by rotation.
  • the inner cylinder is smoothly rotated in the outer cylinder, and the slight change in the rotation angle of the inner cylinder is taken out as a displacement on the circumference with high sensitivity.
  • a scale level, angle sensor, microphone mouth motor, etc. that provide revolutionary convenience in civil engineering design, construction and inspection, which can measure the rotation angle and can read 360 degrees with one touch.
  • the present invention relates to a rotating body device. Background art
  • the fluid bearing there are a fluid bearing device (JP-A-5-330372), a motor equipped with a fluid bearing (JP-A-10-322927), and the like.
  • a fluid bearing device JP-A-5-330372
  • a motor equipped with a fluid bearing JP-A-10-322927
  • the like For the bearing that is completely floating in the bearing as in the present invention, such as by reducing the wear of the conventional bearing, improving the oil retention and slidability, or eliminating bubbles. Is not found at all.
  • the inclination of the floor is 2 degrees, it can be clearly specified at the design stage.
  • the construction is performed while measuring the inclination using a spirit level, and the same is applied to the inspection. If the construction can be checked using the above level, the quality of the work can be significantly improved.
  • the above-mentioned scale level (actual square root 0 7—0 0 2 8 3 9) has a function to measure an arbitrary angle, but if you try to measure a minute angle such as 1 degree, for example, Due to the friction of the small projections, the inner cylinder could not smoothly change the angle, resulting in poor sensitivity.
  • the above-mentioned graduation level (actual opening level 0 7-0 0 2 8 3 9) has a small projection on the inner wall of the outer cylinder so that the inner cylinder is located at the center of the cylinder.
  • mass production it is difficult to maintain uniform quality when attaching small projections to the inner wall of the cylinder, and mass production is not possible. .
  • SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotator device capable of smoothly rotating an inner cylinder within an outer cylinder with small friction, and a graduation level using the same. Disclosure of the invention
  • the present invention provides a rotating body device capable of smoothly rotating the inner cylinder inside the outer cylinder except for frictional force.
  • a scale and a weight are provided on the peripheral surface of the inner cylinder, and a reference line is provided on the outer cylinder to form a main part, and a minute angle is set on the circumference of the inner cylinder. It provides a scale that can be converted to displacement to measure the tilt angle with high sensitivity, while at the same time enabling mass production and stable quality.
  • FIG. 1 is a side view of a part of a scale in which an outer cylinder and an inner cylinder are combined in a scale level having a buoyancy bearing according to an embodiment of the present invention.
  • FIG. 2 is a front view of the main part of the scale having the buoyancy bearing shown in FIG.
  • FIG. 3 is a side view of the buoyancy bearing in the scale having the buoyancy bearing shown in FIG.
  • Fig. 4 is a diagram of the scale and the reference line of the scale with the buoyancy bearing shown in Fig. 1.
  • FIG. 5 is an overall view of a scale level having a buoyancy bearing according to an embodiment of the present invention.
  • Figure 6 is a diagram of the bubbles in the bubble level.
  • the outer cylinder 1 and its lid are made by injection molding.
  • the outer cylinder 11 and the lid are provided with a bearing 8 formed at the center of the circle with a recess of, for example, 2.1 mm.
  • the inner cylinder 2 and its lid are made by injection molding.
  • the inner cylinder 1 and the lid are provided with a shaft 9 having a diameter of, for example, 2 mm at the center of the circle.
  • the weight 3 is bonded at a position away from the shaft 9 of the inner cylinder.
  • the weight of the weight 3 is set so that the sum of the weights of the inner cylinder 2 and the weight 3 is equal to the weight obtained by multiplying the volume of the inner cylinder 12 by the specific gravity of the liquid 5.
  • a lid is adhered to the inner cylinder 1 and sealed, and the scale 4 graduated once every 360 degrees on the peripheral surface of the inner cylinder 2 is attached.
  • Cylinder 2 is mounted by fitting the shaft 9 and bearing 8 in the outer cylinder 1 and attaching the lid to the outer cylinder 1, and through the small hole on the side of the outer cylinder 1, the outer cylinder 1 and the inner cylinder A liquid such as a syringe oil is injected into the space between the two. If the weight of the weight 3 is correct, the inner cylinder 1-2 completely floats in the outer cylinder 1, and the shaft 9 also floats in the bearing 8 as shown in FIG.
  • the scale 4 of the inner cylinder 12 and the reference line 10 of the outer cylinder 1 are complementary to each other, for example, green and red. When the scale 4 and the reference line 10 overlap, the color changes to black, so reading errors can be reduced.
  • the meter section 6 composed of the outer cylinder 1 and the inner cylinder 1 constructed in this way is fixed to the housing 7 placed on the horizontal plate so that the 0-degree scale and the reference line overlap.
  • a scale with five buoyancy bearings is completed.
  • Industrial applicability The present invention has a feature in a buoyancy bearing.
  • the inner cylinder 1 eliminates a load caused by gravity and friction in rotation in the outer cylinder 1 and provides a rotating body device capable of accurately and smoothly rotating the inner cylinder. it can.
  • the scale level to which the present invention is applied has the following effects.
  • the range of measurement will be described.
  • the graduation level having the buoyancy bearing of the present invention can read an arbitrary inclination angle of 360 degrees as well as horizontal and vertical. Therefore, in civil engineering construction, not only the floor, but also the slope of walls, pillars, gates, etc. It is an epoch-making thing that can easily read the inclination angle with an accuracy of 0.5 degrees simply by placing or following the scale of the present invention on the measuring surface without any procedure.
  • the sensitivity and the reading accuracy will be described.
  • the conventional bubble-type level has bubbles in a glass tube with a large radius of curvature, so Then, the displacement of the bubbles is large. In other words, the sensitivity is better for horizontal measurement only.
  • the presence of an air bubble in the center of the two lines is determined by the human eye, which has the disadvantage of large reading errors.
  • the scale level of the present invention is sensitive to minute angle changes because the shaft is floating in the bearing due to the balance between buoyancy and gravity, so it is not subjected to loads due to frictional force or gravity. A shift on the circumference was obtained, and high sensitivity was achieved. Also, since the scale is read by the overlap of the reference line and the scale, the reading accuracy is good.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Level Indicators Using A Float (AREA)

Abstract

L'invention porte sur un dispositif à corps tournant dans lequel un cylindre intérieur peut tourner facilement, avec un faible frottement dans un cylindre extérieur, et sur un niveau gradué utilisant le dispositif. Dans ledit dispositif un cylindre intérieur (2) est monté tournant dans un cylindre extérieur (1) sur un palier et un liquide est présent entre le cylindre intérieur et le cylindre extérieur (1). Le palier présente des évidements au niveau des centres du cylindre extérieur (1), ainsi que des tourillons (9) au niveau des centres du cylindre intérieur (2), qui s'engagent dans les évidements. Les tourillons constituent des paliers flottants maintenus en place par la poussée hydraulique du cylindre intérieur (2) tournant dans les évidements, le faible jeu permettant qu'il n'y ait pas de contact. L'invention porte également sur un niveau gradué obtenu en disposant: une échelle graduée à la périphérie du cylindre intérieur (2); une masselotte (3) distante des tourillons (9); et une ligne de référence (10) sur le cylindre extérieur (1).
PCT/JP2002/012910 2001-12-14 2002-12-10 Dispositif a corps tournant et dispositif a niveau gradue WO2003052349A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001381795A JP3968502B2 (ja) 2001-12-14 2001-12-14 浮力軸受け目盛水準器
JP2001-381795 2001-12-14

Publications (1)

Publication Number Publication Date
WO2003052349A1 true WO2003052349A1 (fr) 2003-06-26

Family

ID=19187377

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/012910 WO2003052349A1 (fr) 2001-12-14 2002-12-10 Dispositif a corps tournant et dispositif a niveau gradue

Country Status (3)

Country Link
JP (1) JP3968502B2 (fr)
CN (1) CN1589391A (fr)
WO (1) WO2003052349A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101146107B1 (ko) * 2011-12-23 2012-05-16 한생수 부력체를 이용한 수준기
KR101384098B1 (ko) 2012-12-14 2014-04-10 조기남 수준기

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57122511U (fr) * 1981-01-24 1982-07-30
JPS6017312A (ja) * 1983-07-11 1985-01-29 Mitsubishi Agricult Mach Co Ltd 傾斜検知装置
JPS61206814U (fr) * 1985-06-14 1986-12-27
JPH0315642U (fr) * 1989-06-29 1991-02-18
JPH06282666A (ja) * 1993-03-26 1994-10-07 Hakuhindou:Kk ダイヤルカード
JP2000314602A (ja) * 1999-04-30 2000-11-14 Kyokuto Sanki Co Ltd 寸法測定具

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57122511U (fr) * 1981-01-24 1982-07-30
JPS6017312A (ja) * 1983-07-11 1985-01-29 Mitsubishi Agricult Mach Co Ltd 傾斜検知装置
JPS61206814U (fr) * 1985-06-14 1986-12-27
JPH0315642U (fr) * 1989-06-29 1991-02-18
JPH06282666A (ja) * 1993-03-26 1994-10-07 Hakuhindou:Kk ダイヤルカード
JP2000314602A (ja) * 1999-04-30 2000-11-14 Kyokuto Sanki Co Ltd 寸法測定具

Also Published As

Publication number Publication date
CN1589391A (zh) 2005-03-02
JP2003185432A (ja) 2003-07-03
JP3968502B2 (ja) 2007-08-29

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