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Ceiling-traveling vehicle, ceiling-traveling vehicle system and method for detecting obstacles

A technology of bridge crane and detection method, which is applied to the elevated railway system, monorail system, control/regulation system and other directions with suspended vehicles, which can solve problems such as false detection and achieve the effect of avoiding interference

Pending Publication Date: 2021-06-29
MURATA MASCH LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When using this means, if the obstacle sensor in the overhead crane of the above-mentioned Patent Document 1 is used, the detection light may collide with the overhead crane that exists in the front of the traveling direction and be reflected, and as a result, there may be Misdetection of other overhead cranes ahead as obstacles

Method used

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  • Ceiling-traveling vehicle, ceiling-traveling vehicle system and method for detecting obstacles
  • Ceiling-traveling vehicle, ceiling-traveling vehicle system and method for detecting obstacles
  • Ceiling-traveling vehicle, ceiling-traveling vehicle system and method for detecting obstacles

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Embodiment Construction

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments described below. In addition, in the drawings, in order to explain the embodiment, the scale is appropriately changed and displayed by enlarging or protruding a part of the drawing. In the following figures, the directions in the figures are described using the XYZ coordinate system. In this XYZ coordinate system, a plane parallel to the horizontal plane is referred to as an XY plane. In this XY plane, the traveling direction of the overhead travelling crane 100 and one linear direction are denoted as the X direction, and the direction orthogonal to the X direction is denoted as the Y direction. In addition, the traveling direction of the overhead traveling crane 100 can be changed from the state shown in the following figure to another direction, for example, there may be a case where it travels in a curv...

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Abstract

To definitively detect obstacles which will impede travel, and to suppress erroneous detection of another ceiling-traveling vehicle as an obstacle. A ceiling-traveling vehicle 100 is equipped with: a travel unit 20 for traveling along a lattice-shaped track R; a main body section 10 which is positioned below the track and is connected to the travel unit 20; and detection units 40 which are positioned rearward from the center of the main body section 10 in the direction of travel of the travel unit 20, are positioned below the main body section 10, emit a detection light L downward and forward in the direction of travel, and detect obstacles by receiving the reflected detection light L.

Description

technical field [0001] The present invention relates to an overhead crane, an overhead crane system, and an obstacle detection method. Background technique [0002] In a semiconductor manufacturing plant or the like, for example, an overhead crane system is used for conveying articles such as a FOUP containing semiconductor wafers or a reticle Pod containing a reticle by an overhead crane. In this overhead crane system, for example, when an optical obstacle sensor is installed in the overhead crane and an obstacle is detected, the running of the overhead crane is stopped (refer to Patent Document 1). In the overhead traveling vehicle of Patent Document 1, an obstacle sensor (detection unit) is arranged on the front side in the traveling direction of the overhead traveling vehicle, and detection light such as laser light is irradiated from the obstacle sensor so as to be inclined downward with respect to the horizontal direction, The reflected light reflected by the obstacle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B61B3/02B61B13/00B61B13/06H01L21/677
CPCG05D1/024B61B3/02H01L21/67733H01L21/67259H01L21/67706H01L21/67715H01L21/67724B65G1/0457B61D49/00B65G2201/0297G05D1/0238G05D1/0289B61B3/00
Inventor 小合玄己伊藤靖久
Owner MURATA MASCH LTD
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