JPH01278625A - Swivel joint with turning angle detecting mechanism - Google Patents

Swivel joint with turning angle detecting mechanism

Info

Publication number
JPH01278625A
JPH01278625A JP10499688A JP10499688A JPH01278625A JP H01278625 A JPH01278625 A JP H01278625A JP 10499688 A JP10499688 A JP 10499688A JP 10499688 A JP10499688 A JP 10499688A JP H01278625 A JPH01278625 A JP H01278625A
Authority
JP
Japan
Prior art keywords
shaft
rotor
swivel joint
attached
potentiometer
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.)
Pending
Application number
JP10499688A
Other languages
Japanese (ja)
Inventor
Fujitoshi Takamura
高村 藤寿
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP10499688A priority Critical patent/JPH01278625A/en
Publication of JPH01278625A publication Critical patent/JPH01278625A/en
Pending legal-status Critical Current

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  • Component Parts Of Construction Machinery (AREA)

Abstract

PURPOSE:To make an accurate and automatic stopping of slewing motion possible by detecting a relative turning angle between a rotor and a shaft by means of a potentiometer attached to the rotor, using a rotary roller fixed at the end of the shaft and circulating along the circumference of the shaft by friction force. CONSTITUTION:A potentiometer 3 is attached to the rotor 1 of a hydraulic circuit swivel joint through a bracket 2. A rotary roller 4 mounted to the end of the shaft of a meter 3 is adjusted so that the roller 4 can keep contact with the circumference of the flange 6 of a shaft 5, and rotate by friction force circulating the circumference of the flange 6 without slippage. Then, the turning angle of the rotor 1 in relation to the shaft 5 is converted to an electric signal by the meter 3 and inputted to a swing angle automatic control system.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、たとえば油圧パワーショベル、油圧クレーン
等建設機械の油圧回路に用いられるスイベルジヨイント
に関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a swivel joint used in a hydraulic circuit of a construction machine such as a hydraulic power shovel or a hydraulic crane.

(従来の技術) スイベルジヨイント13は第7図に示すように、上部旋
回体14の旋回中心に取付けられ。
(Prior Art) As shown in FIG. 7, the swivel joint 13 is attached to the center of rotation of the upper revolving body 14.

油圧a15から左右走行モータ16への油圧配管の継手
として用いられており、その構造は第8図に示すように
、上部旋回体に固定され、油圧源からの配管を連結した
ロータ1と1足回り装置に固定され、走行モータへの配
管を連結したシャフト5からなり、シャフト5の中心軸
を中心として相互に回転自在となっているが、従来のス
イベルジヨイントには回転角検出機構が取付けられてい
ない。
It is used as a joint for hydraulic piping from the hydraulic pressure a15 to the left and right travel motors 16, and its structure, as shown in Fig. 8, consists of a rotor 1 and a pair of legs fixed to the upper revolving body and connected to the piping from the hydraulic source. It consists of a shaft 5 that is fixed to a rotating device and connected to piping to a traveling motor, and is mutually rotatable around the central axis of the shaft 5. Conventional swivel joints are equipped with a rotation angle detection mechanism. It has not been done.

(発明が解決しようとする課題) 従来油圧パワーショベル等の旋回運動は、オペレータの
旋回レバー操作によってなされるため、旋回後の停止位
置はレバー操作時期の遅速によってばらつきを生し1位
置ずれが大きい場合には再度旋回レバーを操作して停止
位置を修正しなければならないという問題点があった。
(Problem to be Solved by the Invention) Conventionally, the turning motion of a hydraulic power excavator, etc. is performed by the operator's operation of the turning lever, so the stopping position after turning varies depending on the slowness of the timing of lever operation, and the deviation by one position is large. In this case, there is a problem in that the turning lever must be operated again to correct the stopping position.

本発明は、油圧パワーショベル等の旋回停止操作を自動
的にかつ正確に行う手段として旋回角度を検出し制御す
る自動制御システムを採用する場合の旋回角度検出を、
スイベルジヨイントの回転角で行うこととし、これに必
要な回転角検出a横付スイベルジヨイントを提供するこ
とを目的としている。
The present invention detects the turning angle when an automatic control system that detects and controls the turning angle is used as a means to automatically and accurately perform the turning stop operation of a hydraulic power excavator, etc.
This is performed using the rotation angle of the swivel joint, and the purpose of this invention is to provide a swivel joint with a side attachment for rotation angle detection a necessary for this purpose.

(課題を解決するための手段) 上記目的を達成するために1本発明の回転角検出機構付
スイベルジヨイントにおいては、スイベルジヨイントの
ロータまたはシャフトの外周に1回転角検出用ポテンシ
ョメータまたは近接スイッチあるいは光センサを取付け
たものである。
(Means for Solving the Problems) In order to achieve the above object, the swivel joint with a rotation angle detection mechanism of the present invention includes a rotation angle detection potentiometer or a proximity switch on the outer periphery of the rotor or shaft of the swivel joint. Or it has an optical sensor attached.

(作用) 上記のように構成された回転角検出機構付スイベルジヨ
イントは、シャフトに対するロータの回転角をポテンシ
ョメークまたは近接スイッチあるいは光センサによって
電気信号に変換し。
(Function) The swivel joint with a rotation angle detection mechanism configured as described above converts the rotation angle of the rotor relative to the shaft into an electrical signal using a potentiometer, a proximity switch, or an optical sensor.

旋回角度自動制御システムに入力する。Input to automatic turning angle control system.

(実施例) 以下実施例について図面を参照して説明する。(Example) Examples will be described below with reference to the drawings.

第1図において、油圧回路用スイベルジヨイントのロー
タ1に、ブラケット2を介してポテンショメータ(回転
形)3を取付ける。この際ポテンショメータ3の軸端に
取付けられた回転ローラ4が、シャフト5のフランジ部
6の外周と接触し、ロータ1の回転に伴って回転ローラ
4がフランジ部6の外周を滑ることなく摩擦回転するよ
うに調整する。ポテンショメータ3の配線は旋回角度自
動制御システムに接続する。
In FIG. 1, a potentiometer (rotary type) 3 is attached to a rotor 1 of a swivel joint for a hydraulic circuit via a bracket 2. At this time, the rotating roller 4 attached to the shaft end of the potentiometer 3 comes into contact with the outer periphery of the flange portion 6 of the shaft 5, and as the rotor 1 rotates, the rotating roller 4 rotates by friction without slipping on the outer periphery of the flange portion 6. Adjust accordingly. The wiring of the potentiometer 3 is connected to the automatic rotation angle control system.

ポテンショメータ3をシャフト5に取付け。Attach potentiometer 3 to shaft 5.

回転ローラ4をロータ1の外周に接触させてもよい。The rotating roller 4 may be brought into contact with the outer periphery of the rotor 1.

第2図に示す第2実施例では、スイベルジヨイントのロ
ータ1に、ブラケット7を介して近接スイッチ8を取付
け、シャフト5のフランジ部6の外周に嵌着した外歯9
の歯先と近接スイッチ8の先端との間隔が所定の寸法に
なるよう近接スイッチの位置を調整する。また近接スイ
?チ8の配線は旋回角度自動制御システムに接続する。
In the second embodiment shown in FIG. 2, a proximity switch 8 is attached to a rotor 1 of a swivel joint via a bracket 7, and an external tooth 9 fitted to the outer circumference of a flange portion 6 of a shaft 5.
The position of the proximity switch is adjusted so that the distance between the tip of the tooth and the tip of the proximity switch 8 becomes a predetermined distance. Melee sui again? The wiring of H8 is connected to the automatic rotation angle control system.

近接スイッチ8をシャフト5に取付け、外歯9をロータ
1の外周に嵌着してもよい。
The proximity switch 8 may be attached to the shaft 5 and the external teeth 9 may be fitted to the outer periphery of the rotor 1.

第3図に示す第3実施例では、スイベルジヨイントのロ
ータ1に、ブラケット10を介して光センサ11を取付
け、シャフト5のフランジ部6の外周に貼着したバーコ
ードラベル12と光センサ11の先端との間隔が所定の
寸法になるよう光センサの位置を調整する。バーコード
ラベル12はたとえば白地に黒線を入れたものとし、黒
線は等幅5等間隔でもよい、また光センサ11の配線は
旋回角度自動制御システムに接続する。
In the third embodiment shown in FIG. 3, an optical sensor 11 is attached to a rotor 1 of a swivel joint via a bracket 10, and a barcode label 12 and an optical sensor 11 attached to the outer circumference of a flange portion 6 of a shaft 5 are attached. Adjust the position of the optical sensor so that the distance between it and the tip of the optical sensor becomes a predetermined distance. The barcode label 12 is, for example, a white background with black lines, and the black lines may be of equal width and at five equal intervals, and the wiring of the optical sensor 11 is connected to an automatic rotation angle control system.

光センサ11をシャフト5に取付け、バーコードラベル
12をロータ1の外周に貼着してもよい。
The optical sensor 11 may be attached to the shaft 5 and the barcode label 12 may be attached to the outer periphery of the rotor 1.

(発明の効果) 本発明は上述のように構成されているので。(Effect of the invention) Since the present invention is configured as described above.

次に記載する効果を奏する。This produces the following effects.

油圧回路用スイベルジヨイントのシャフトに対するロー
タの向転角を、ポテンショメークまたは近接スイッチあ
るいは光センサを用いて正確、迅速に検出できるので、
油圧パワーショベル等の旋回停止操作を正確かつ自動的
に行う手段として、旋回角度を検出して制御する自動制
御システムを採用する場合1本発明になる回転角検出機
構7寸スイベルジヨイントを使用すると極めて便利であ
る。
The rotation angle of the rotor relative to the shaft of a swivel joint for hydraulic circuits can be detected accurately and quickly using a potentiometer, proximity switch, or optical sensor.
When adopting an automatic control system that detects and controls the rotation angle as a means to accurately and automatically perform the rotation stop operation of a hydraulic power excavator, etc. 1. When using the rotation angle detection mechanism 7-inch swivel joint of the present invention. Extremely convenient.

また油圧パワーショベル等のスイベルジヨイントは、車
体中央部に取付けられているので。
Also, the swivel joint of hydraulic power excavators etc. is installed in the center of the vehicle body.

土砂等の接触によって回転角検出機構が破損するおそれ
はない。
There is no risk of damage to the rotation angle detection mechanism due to contact with earth and sand.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図、第3図、第5図は本発明になる回転角検出機構
付スイベルジヨイントの側面図で。 第1図はポテンショメータ、第3図は近接スイッチ、第
5図は光センサを取付けた場合を示す。 第2図、第4図、第6図は上記のそれぞれの場合の検出
機構に関する説明図、第7図は油圧パワーショベルの概
略側面図5第8図はスイベルジヨイントの概略断面図で
ある。 1・・・ロータ   2.7.10・・・ブラケット3
・・・ポテンショメータ  4・・・回転ローラ5・・
・シャフト   8・・・近接スイッチ9・・・外歯 
    11・・・光センサ12・・・バーコードラベ
ル 13・・・スイベルジヨイント 14・・・上部旋回体
15・・・油圧源16・・・走行モータ特許出願人 株
式会社小松製作所 代理人 (弁理士)岡 1)和 喜 第1図 第2図 第3図 第4図 第5図 第6図
1, 3, and 5 are side views of a swivel joint with a rotation angle detection mechanism according to the present invention. FIG. 1 shows a potentiometer, FIG. 3 shows a proximity switch, and FIG. 5 shows an optical sensor. FIGS. 2, 4, and 6 are explanatory views of the detection mechanism in each of the above cases, and FIG. 7 is a schematic side view of the hydraulic power shovel. FIG. 8 is a schematic sectional view of the swivel joint. 1...Rotor 2.7.10...Bracket 3
...Potentiometer 4...Rotating roller 5...
・Shaft 8... Proximity switch 9... External teeth
11... Optical sensor 12... Barcode label 13... Swivel joint 14... Upper revolving body 15... Hydraulic source 16... Traveling motor patent applicant Komatsu Ltd. representative (patent attorney) 1) Kazuki Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

【特許請求の範囲】 1、シャフト5またはロータ1の外周を摩擦回転する回
転ローラ4を軸端に固着し、ロータ1またはシャフト5
のいずれか一方に取付けられたポテンショメータ3によ
って、ロータ1とシャフト5間の相対回転角を検出でき
るようにしたことを特徴とする回転角検出機構付スイベ
ルジョイント。 2、ポテンショメータに代えて、シャフト5またはロー
タ1の外周に嵌着した外歯9の歯先との間隔を適切に保
つようにしてロータ1またはシャフト5のいずれか一方
に近接スイッチ8を取付けた、請求項1記載の回転角検
出機構付スイベルジョイント。 3、ポテンショメータに代えて、シャフト5またはロー
タ1の外周に貼着したバーコードラベル12との間隔を
適切に保つようにしてロータ1またはシャフト5のいず
れか一方に光センサ11を取付けた、請求項1記載の回
転角検出機構付スイベルジョイント。
[Claims] 1. A rotary roller 4 that frictionally rotates around the outer periphery of the shaft 5 or rotor 1 is fixed to the shaft end, and the rotor 1 or the shaft 5
A swivel joint with a rotation angle detection mechanism, characterized in that the relative rotation angle between the rotor 1 and the shaft 5 can be detected by a potentiometer 3 attached to either one of the rotor 1 and the shaft 5. 2. Instead of the potentiometer, a proximity switch 8 is attached to either the rotor 1 or the shaft 5 so as to maintain an appropriate distance from the tips of the external teeth 9 fitted on the outer periphery of the shaft 5 or the rotor 1. A swivel joint with a rotation angle detection mechanism according to claim 1. 3. Instead of the potentiometer, an optical sensor 11 is attached to either the rotor 1 or the shaft 5 so as to maintain an appropriate distance from the barcode label 12 attached to the outer periphery of the shaft 5 or the rotor 1. The swivel joint with a rotation angle detection mechanism according to item 1.
JP10499688A 1988-04-27 1988-04-27 Swivel joint with turning angle detecting mechanism Pending JPH01278625A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10499688A JPH01278625A (en) 1988-04-27 1988-04-27 Swivel joint with turning angle detecting mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10499688A JPH01278625A (en) 1988-04-27 1988-04-27 Swivel joint with turning angle detecting mechanism

Publications (1)

Publication Number Publication Date
JPH01278625A true JPH01278625A (en) 1989-11-09

Family

ID=14395710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10499688A Pending JPH01278625A (en) 1988-04-27 1988-04-27 Swivel joint with turning angle detecting mechanism

Country Status (1)

Country Link
JP (1) JPH01278625A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102534159B1 (en) * 2022-12-15 2023-05-18 주식회사 광림 Measuring device arrangement for rotational origin point of crane column

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102534159B1 (en) * 2022-12-15 2023-05-18 주식회사 광림 Measuring device arrangement for rotational origin point of crane column

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