JPH05338710A - Installation structure of detector for load style on lifting element in stacker crane - Google Patents

Abstract

PURPOSE:To cope with a change in load height promptly without the need for extra members and sensors which are required to cope with the change in load height, by forming a traveling means on at least one of side surfaces of a frame, and movably, installing a load style detector on the traveling means. CONSTITUTION:Guide rails 4, 4 are installed respectively in the vertical direction of side faces 3a, 3a of respective frames which are suspended from both the ends of a l loading platform 2. The top end of a stud bolt 6 is projected to the inside of the guide rail 4 from a bolt insertion hole 5d of a stay 5c, and the load style detectors 5, 7 are made to serve as the guide rails by nuts 6a and are slid by loosening the nuts. The load style detectors 5, 7 are slidably attached to the guide rails 4 of the other side surfaces 3b, 3b of the respective frames 3 respectively in the same manner. It is thus possible, with this constitution, to move the load style detectors to an arbitrary position easily by loosening only the nut without the need for extra parts even when the load height changes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a detector mounted on a lifting body of a stacker crane used for loading and unloading loads in an automated warehouse or the like for detecting a load condition.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure of a package detector,
As shown in Fig. 2, set up poles at the four corners of the lifting body (10),
A large number of optical sensors (9), (9) ・ ・ are fixed to these, or a pole or thread is fixed to a predetermined position of the lifting body via a limit switch, and when the load touches the pole or thread, the limit switch will be Some have been made to work.

[0003]

However, in the former mounting structure, a large number of optical sensors must be fixed in advance in order to cope with changes in the height of the load, which is very costly. In the latter case, the pole and the thread must be re-fixed together with the limit switch every time the height of the load changes, resulting in poor work efficiency.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention provides a mounting structure for a package shape detector which can improve working efficiency and reduce cost. That is, the structure is used in a stacker crane, in a lifting body including a loading platform and a set of frames vertically installed at both ends of the loading platform, a moving means is provided on at least one side surface of the frame, The package shape detector is movably attached to this moving means.

[0005]

The load detector is movably attached to the moving means provided on at least one side surface of the pair of frames vertically provided at both ends of the loading platform of the lifting body. It can be moved to a predetermined position according to the change of.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view showing an embodiment of a mounting structure (hereinafter, referred to as a mounting structure) of a package shape detector on a lifting body in a stacker crane according to the present invention. (1) shows the lifting body, and a pair of frames (3), (3) are provided at both ends of the loading platform (2).
Is installed vertically. Guide rails (4) and (4), which are examples of moving means having a sectional shape as shown in the figure, are attached to the vertical sides of the side surfaces (3a) and (3a) of each frame.
(5) and (7) are package detectors. For the package detector (5), attach the fixture (5b) with the light sensor (5a) on the light emitting side to the stay (5
Installed in c). The stay (5c) is formed in a shape that can be fitted onto the guide rail (4) as shown in the drawing, and has bolt insertion holes (5d), (5d). Then, as shown in the figure, insert the stud bolt (6) inside the guide rail (4), project the tip of the stud bolt (6) from the bolt insertion hole (5d) of the stay (5c), and fasten the nut (6a). The package detector can be fixed to the guide rails by using, and can be easily slid by loosening the nut. The package detector (7) has an optical sensor (7a) on the light receiving side,
Guide rail with the same structure as the light sensor (5a) on the light emitting side
It is slidably attached to (4). Also, on the other side (3b), (3b) of each frame (3), the package detectors (5), (7)
Are likewise slidably mounted on the guide rails (4) respectively. (8) shows a holder for holding the wiring connected to the package shape detector, which is made of a flexible material such as synthetic resin and can be fitted into the guide rail (4). It can be moved to any position. With the above configuration, even if the height of the load changes, it can be easily moved to an arbitrary position by loosening the nut. Also, the total height of the frame is regulated,
Even when only a short rail can be attached, the optical sensor can be set at a position higher than the frame by using the bolt insertion hole (5d) below the stay (5c) as shown in the figure. Further, if the left and right detectors are replaced so that the optical sensor is located at the lower end of the stay, it is possible to cope with a lower load. In addition, the wiring connected to the package detector is stored in the rail using the retainer (8), and the wiring insertion hole
If it is derived from (3c), the wiring is not exposed outside the frame, so that it does not interfere with loading and unloading.

Here, if necessary, a guide rail may be attached to the upper surface of the frame, and the load detector may be movably attached thereto. Further, a slit or a plurality of holes may be formed on one surface of the frame, and the load detector can be moved using these, and the mounting structure thereof is not limited to that of the above embodiment.

The guide rails are attached to the optical sensor attachment surfaces of the fixtures (5b) and (7b), respectively.
By making each of a) and (7a) movable along the guide rail, it is possible to deal with changes in the width and depth of the load. Also, by making the fixtures (5b) and (7b) rotatable with respect to the stays (5c) and (7c) respectively, one of the package detectors on the light emitting side and the light receiving side can be attached to the upper end of the rail. Further, the other can be fixed to the lower end so that light can be projected and received diagonally. further,
A contact sensor may be used instead of a non-contact sensor such as an optical sensor, and means other than the stud bolt and nut may be used as the stay fixing means.

[0009]

According to the present invention, since the mounting position of the load detector can be moved quickly and easily, it is possible to quickly respond to changes in the height of the load. In addition, since no extra member or sensor is needed for changing the height of the load, it does not cost much.

[Brief description of drawings]

FIG. 1 is an explanatory view of a mounting structure according to the present invention.

FIG. 2 is an explanatory view of a conventional mounting structure.

[Explanation of symbols] (1) ・ ・ Elevating body, (2) ・ ・ Bag, (3) ・ ・ Frame, (3
a), (3b) ・ ・ Side, (3c) ・ ・ Wiring insertion hole, (4) ・ ・ Rail, (5), (7) ・ ・ Package type detector, (5a), (7a) ・ ・ Optical Sensor, (5b), (7b) ・ ・ Mounting fixture, (5c), (7c) ・ ・ Stay, (5
d), (7d) ・ ・ Bolt insertion hole, (6) ・ ・ Stud bolt,
(6a) ・ ・ Nut, (8) ・ ・ Holder, (9) ・ ・ Optical sensor, (10) ・ ・ Elevator

Claims (1)

[Claims] 1. A loading platform used for a stacker crane,
In an elevating body including a pair of frames suspended from both ends of a loading platform, a moving means is provided on at least one side surface of the frame, and a load detector is movably attached to the moving means. Mounting structure of the package shape detector on the lifting body in the characteristic stacker crane.