JPH0411127Y2 - - Google Patents
Info
- Publication number
- JPH0411127Y2 JPH0411127Y2 JP1871088U JP1871088U JPH0411127Y2 JP H0411127 Y2 JPH0411127 Y2 JP H0411127Y2 JP 1871088 U JP1871088 U JP 1871088U JP 1871088 U JP1871088 U JP 1871088U JP H0411127 Y2 JPH0411127 Y2 JP H0411127Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnet
- braking device
- magnetic
- pendulum
- braking
- 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
Links
- 230000003287 optical effect Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 230000004907 flux Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Vibration Prevention Devices (AREA)
- Telescopes (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は水準測量を行う自動水準儀の水準補償
用振子の制動装置の改良に係るものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to an improvement of a braking device for a level compensating pendulum of an automatic leveling instrument for leveling.
従来の技術
自動水準儀の光学系は第１図に示すように光路
内に置かれた水準補償用の振子があり機器の傾き
に応じて重力作用によつて振子が一定の比率で傾
くようになつているが、この振子は据付時の振動
や地盤の振動により振揺するため、これを短時間
に静止させるためにシリンダーとピストンから成
る空気制動装置又は第２図に示すような純銅材の
制動板と２ケの磁石による磁気制動装置（本考案
者の考案による公告No.昭59−565）を使用してい
た。Prior Art As shown in Figure 1, the optical system of an automatic leveling instrument has a pendulum placed in the optical path for level compensation, and the pendulum tilts at a constant rate due to the action of gravity depending on the tilt of the device. However, this pendulum oscillates due to vibrations during installation and vibrations of the ground, so in order to keep it still for a short time, an air brake device consisting of a cylinder and a piston or a brake plate made of pure copper material as shown in Figure 2 is used. It used a magnetic braking device with two magnets (publication No. 1983-565, invented by the inventor).
問題点を解決するための手段
空気制動装置はシリンダーとピストンの外周の
隙間を狭くしないと制動が効かず、この隙間に小
さなゴミが入つたり吊線が伸びると振子が動作し
なくなり故障の原因となる欠点があり、従来の磁
気制動は２ケの磁石を用い、制動板を包囲するヨ
ーク又はシヤント板を必要とし制動装置が広い空
間を占有し自動水準儀本体の大きさを小型化でき
ず製造コストも高い等の問題点があつた。Measures to solve the problem In an air braking device, braking will not work unless the gap between the cylinder and piston is narrowed, and if small particles get into this gap or the hanging wire stretches, the pendulum will not work and this may cause a malfunction. Conventional magnetic braking uses two magnets and requires a yoke or shunt plate to surround the braking plate, so the braking device occupies a large space, making it impossible to reduce the size of the automatic leveling body, which increases manufacturing costs. There were problems such as high cost.
以上の如く従来の磁気制動装置の問題点を解決
するためにコの字形ヨークの内部中央に１ケの磁
石を接着し前記磁石から発する全磁束を制動板上
の４ケ所で貫通させる磁路を形成せしめ制動効率
を数倍に増加させるように考案したものであり、
本制動装置は従来品と比較して製造コストも1/2
以下であり占有空間も極めて少い等の特長をそな
えるものである。 As mentioned above, in order to solve the problems of conventional magnetic braking devices, one magnet is glued to the center of the U-shaped yoke, and a magnetic path is created in which the entire magnetic flux emitted from the magnet passes through four locations on the braking plate. It was devised to increase the braking efficiency several times.
This braking device has half the manufacturing cost compared to conventional products.
It has the following features: occupies an extremely small amount of space.
実施例
図面について本考案を説明すれば次の通りであ
る。Embodiments The present invention will be explained with reference to the drawings as follows.
第１図は一般の自動水準儀の光学系を示すもの
で対物レンズ１と合焦レンズ２により集光された
目標像は正像プリズム系５，６，７により正像化
され十字線４上に結像しこれを接眼レンズ３によ
り拡大視するように構成されている。 Figure 1 shows the optical system of a general automatic level. The target image focused by the objective lens 1 and the focusing lens 2 is made into a normal image by the normal image prism systems 5, 6, and 7, and is placed on the crosshair 4. It is configured to form an image and magnify it using an eyepiece lens 3.
正像プリズム系の中央の水準補償用反射鏡６は
吊台９から４本の吊線８，８′により吊られた振
子台１０に固定してある。 A level compensating reflecting mirror 6 at the center of the regular image prism system is fixed to a pendulum stand 10 suspended from a hanging stand 9 by four hanging lines 8, 8'.
従来の自動水準儀は前記振子台の振揺を制動す
るために振子台１０に支柱１１を設け、上部のシ
リンダー１２とピストン１３により空気制動を行
つていた。空気制動はシリンダーとピストンの外
周間隙を狭くしないと制動が効かずゴミ等の付着
により故障が多発していた。 In the conventional automatic leveling device, a support 11 is provided on a pendulum stand 10 to damp the swinging of the pendulum stand, and air damping is performed by a cylinder 12 and a piston 13 at the upper part. With air braking, the brakes would not work unless the outer circumferential gap between the cylinder and piston was narrowed, resulting in frequent failures due to dirt and other particles adhering to the brakes.
そこで最近は第２図に示すような磁気制動装置
が開発されたがこの磁気制動装置は希土類金属を
材質とする２ケの磁石M1，M2を鉄製ヨーク１５
上に平行に接着し支柱１１に取付けた純銅から成
る制動板１４に0.5〜1.0mmの間隔をへだてて対接
せしめ制動板をはさんで磁石と反対側にシヤント
板１７を置き、磁束Ｆが制動板１４を貫くＡ，Ｂ
点に発生する感応電流により磁気制動を行つてい
た。 Recently, a magnetic braking device as shown in Fig. 2 has been developed. This magnetic braking device consists of two magnets M 1 and M 2 made of rare earth metals attached to an iron yoke 15.
A shunt plate 17 is placed on the opposite side of the magnet with the brake plate sandwiched between the brake plate 14 made of pure copper, which is glued parallel to the top and attached to the support post 11, with an interval of 0.5 to 1.0 mm between them. A, B penetrating the brake plate 14
Magnetic braking was performed by a sensitive current generated at a point.
本考案は第３図Ａに示すように１ケの磁石Ｍの
上下面Ma，MbがＮ又はＳになるように着磁し、
コの字型ヨーク１６の内部中央に磁石の表面Ma
又は裏面Mbを接着して成る磁石装置を制動板１
４に一定の間隔をへだてて対接して磁気制動を行
うようにしたものである。 In this invention, as shown in Fig. 3A, one magnet M is magnetized so that its upper and lower surfaces Ma and Mb are N or S.
At the center of the U-shaped yoke 16 is a magnet surface Ma.
Or a magnet device made by gluing the back side Mb to the brake plate 1
4 and facing each other at a fixed interval to perform magnetic braking.
本考案磁気制動装置によるときは磁石ＭのＮ磁
極の端部Ｂ，Ｃから発した磁束F1，F2はコの字
型ヨークの両端のＳ磁極Ａ，Ｄに磁路を形成する
ため第３図Ｂに示すように磁束F1，F2は制動板
のＡ，Ｂ，Ｃ，D4ケ所で貫通するため感応電流
はAi，Bi，Ci，Diの総和となり、１ケの磁石で
も従来２ケの磁石を使用していた制動装置よりも
強力な制動力を発揮するものであり実験的にも本
考案作用が実証されている。 When using the magnetic braking device of the present invention, the magnetic fluxes F 1 and F 2 emitted from the ends B and C of the N magnetic poles of the magnet M form a magnetic path to the S magnetic poles A and D at both ends of the U-shaped yoke. As shown in Figure 3B, the magnetic fluxes F 1 and F 2 penetrate the brake plate at four locations A, B, C, and D, so the sensitive current is the sum of Ai, Bi, Ci, and Di, and even with one magnet, it is It exerts a stronger braking force than the braking device that used magnets, and the effectiveness of the present invention has been experimentally verified.
考案の効果
従来の磁気制動装置は希土類金属を材質とする
２ケの磁石を使用していたが、本考案磁気制動装
置は１ケの磁石でシヤント板も必要とせず、従来
の磁気制動装置よりも強力な制動力が得られるた
め製造コストは1/2以下となり、且つ磁石制動装
置が小型となるため補償用振子の調整作業が容易
となり、自動水準儀そのものも小型軽量に設計で
き、抜群の制動力を発揮するため水準測量の精度
も著しく向上する等のすぐれた効果を有するもの
である。Effects of the invention Conventional magnetic braking devices used two magnets made of rare earth metals, but the magnetic braking device of the present invention uses only one magnet and does not require a shunt plate, making it more effective than conventional magnetic braking devices. The manufacturing cost is reduced by half or less because a strong braking force can be obtained, and the magnetic braking device is small, making it easier to adjust the compensation pendulum.The automatic level itself can be designed to be small and lightweight, providing excellent control. Since it exerts power, it has excellent effects such as significantly improving the accuracy of leveling.
第１図は自動水準儀の光学的構造を示す光路
図、第２図は従来の補償用振子の磁気制動装置の
斜視図、第３図Ａは本考案磁気制動装置の作用、
構造を示す平面図、第３図Ｂは正面図である。
符号の説明、１……対物レンズ、２……合焦レ
ンズ、３……接眼レンズ、４……十字線、５……
梯形プリズム、６……水準補償用反射鏡、７……
屋根型プリズム、８，８′……吊線、９……吊台、
１０……振子台、１１……支柱、１２……シリン
ダー、１３……ピストン、１４……制動板、１５
……ヨーク、１６……コの字型ヨーク、１７……
シヤント、Ｍ，M1，M2……磁石、Ma，Mb……
磁石の表裏面、Ｆ，F1，F2……磁束、Ａ，Ｄ…
…コの字型ヨーク両端部、Ｂ，Ｃ……磁石表面の
両端部、Ai，Bi，Ci，Di……Ａ，Ｂ，Ｃ，Ｄ点
に発生する感応電流。
Fig. 1 is an optical path diagram showing the optical structure of an automatic leveling device, Fig. 2 is a perspective view of a conventional magnetic braking device for a compensating pendulum, and Fig. 3A shows the operation of the magnetic braking device of the present invention.
A plan view showing the structure, and FIG. 3B is a front view. Explanation of symbols, 1... Objective lens, 2... Focusing lens, 3... Eyepiece lens, 4... Crosshair, 5...
Trapezoidal prism, 6...Reflector for level compensation, 7...
Roof type prism, 8, 8'... hanging wire, 9... hanging stand,
10... Pendulum stand, 11... Support, 12... Cylinder, 13... Piston, 14... Brake plate, 15
... Yoke, 16 ... U-shaped yoke, 17 ...
Shunt, M, M 1 , M 2 ... Magnet, Ma, Mb ...
Front and back sides of magnet, F, F 1 , F 2 ... magnetic flux, A, D...
...Both ends of the U-shaped yoke, B, C...Both ends of the magnet surface, Ai, Bi, Ci, Di...Sensitive currents generated at points A, B, C, and D.
Claims (1)
を材質とする１ケの磁石の表、裏面が夫々Ｎ極又
はＳ極になるように着磁し鉄板製コの字型ヨーク
の内側中央に前記磁石の表面又は裏面を接着した
磁石装置を自動水準儀の望遠鏡光学系内に於いて
その光軸と平行に振揺する補償用振子に取付けた
純銅材の制動板と僅かな空間を隔てて対接して取
付けて成る自動水準儀の補償用振子の制動装置。 In the magnetic braking device of an automatic leveling device, one magnet made of a rare earth metal is magnetized so that the front and back surfaces thereof become N poles or S poles, respectively, and the magnet is placed in the center inside a U-shaped yoke made of iron plate. A magnet device with its front or back surface glued is installed in the telescope optical system of an automatic level so that it is in contact with a damping plate made of pure copper attached to a compensating pendulum swinging parallel to the optical axis, with a small space between them. A braking device for the compensating pendulum of an automatic leveling instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1871088U JPH0411127Y2 (en) | 1988-02-17 | 1988-02-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1871088U JPH0411127Y2 (en) | 1988-02-17 | 1988-02-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01124516U JPH01124516U (en) | 1989-08-24 |
| JPH0411127Y2 true JPH0411127Y2 (en) | 1992-03-19 |
Family
ID=31233597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1871088U Expired JPH0411127Y2 (en) | 1988-02-17 | 1988-02-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0411127Y2 (en) |
-
1988
- 1988-02-17 JP JP1871088U patent/JPH0411127Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01124516U (en) | 1989-08-24 |
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