JPH049890U

JPH049890U -

Info

Publication number: JPH049890U
Application number: JP5094990U
Authority: JP
Priority date: 1990-05-16
Filing date: 1990-05-16
Publication date: 1992-01-28

Description

[Brief explanation of the drawing]

第１図は、この考案の一実施例を示す図で、第
５図のコンピユータ３６による位置検出系統およ
び動作指令系統を示す図である。第２図は、従来
装置が適用された天井クレーンの概要を示す斜視
図である。第３図は、第２図のガータ部分の詳細
構成を示す拡大図である。第４図は、第３図の構
成による位置検出動作の一例を示すタイムチヤー
トである。第５図は、この考案が適用された天井
クレーンの概要を示す斜視図である。第６図は、
第５図のガータ部分の拡大図である。第７図は、
第１図のコンピユータによる位置検出動作の一例
を示すタイムチヤートである。第８図は、コード
板の移動方向とセツトされる番地の関係を示す図
である。第９図は、光電スイツチユニツトとコー
ド板の組合せ構成の他の実施例を示す正面図であ
る。１０……クレーン（移動機械）、１８……位置
検出手段（インクリメンタル・ロータリ・エンコ
ーダ：パルス信号出力手段）、１９……地上、２
４……レール（移動路）、２８……カウンタ（カ
ウント手段）、３２……光電スイツチユニツト（
補正点検出手段）、３６……コンピユータまたは
シーケンサ（演算手段）、４０……光電スイツチ
ユニツト（補正点位置検出手段）。 FIG. 1 is a diagram showing an embodiment of this invention, and is a diagram showing a position detection system and an operation command system by the computer 36 of FIG. FIG. 2 is a perspective view showing an overview of an overhead crane to which a conventional device is applied. FIG. 3 is an enlarged view showing the detailed configuration of the gutter portion of FIG. 2. FIG. FIG. 4 is a time chart showing an example of the position detection operation using the configuration shown in FIG. FIG. 5 is a perspective view showing an outline of an overhead crane to which this invention is applied. Figure 6 shows
6 is an enlarged view of the gutter portion of FIG. 5. FIG. Figure 7 shows
2 is a time chart showing an example of a position detection operation performed by the computer in FIG. 1. FIG. FIG. 8 is a diagram showing the relationship between the moving direction of the code plate and the address to be set. FIG. 9 is a front view showing another embodiment of the combination structure of the photoelectric switch unit and the code plate. 10... Crane (mobile machine), 18... Position detection means (incremental rotary encoder: pulse signal output means), 19... Ground, 2
4...Rail (traveling path), 28...Counter (counting means), 32...Photoelectric switch unit (
(correction point detection means), 36... computer or sequencer (calculation means), 40... photoelectric switch unit (correction point position detection means).

Claims

[Claims for Utility Model Registration] (1) Pulse signal output means installed on the top side of a mobile machine and outputting a pulse signal according to the moving direction and distance of the mobile machine; and the top side of the mobile machine. a counting means installed on the machine for counting up/down the output pulses of the pulse signal output means according to the moving direction; and detecting a correction point set along the moving path of the moving machine on the machine side; correction point detection means for correcting the count value of the counting means; correction point detection means for detecting the position of a correction point through which the mobile machine passes on the ground side; and the count value of the counting means and the correction point position. A position detection device for a mobile machine such as a crane, comprising calculation means for calculating the position of the mobile machine based on information on correction points detected by the detection means. (2) The calculating means is installed on the ground side, and the count value from the counting means is wirelessly or optically transmitted to the ground side to calculate the position of the mobile machine. Position detection device for mobile machinery such as cranes. (3) The correction point detecting means and the correction point position detecting means each have a photocoupler arranged opposite to each other on a light-shielding plate, and when the mobile machine passes the correction point, these light-shielding plates detect each other's photocoupler. 3. The crane position detection device according to claim 1, wherein the crane position detection device is arranged so as to block an optical path.