JP2947733B2 - Vertical frame for stacker crane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical frame of a stacker crane that travels along a passage between storage shelves in a warehouse, a factory, or the like.

[0002]

FIG. 1 is a schematic view of an automatic warehouse. In the figure, a stacker crane 1 is a rack 2
The lower rail 3 and the upper rail 4 are installed according to the height of the vehicle, and travel between the upper and lower rails. On the other hand, the load 5 handled by the stacker crane is placed on a carriage that moves up and down along the vertical frame 6 of the stacker crane 1, and is transported to a required location.

[0003] In recent years, along with the increase in the size of an automatic warehouse, a long vertical frame has been required.
As the long vertical frame, one manufactured from one square pipe is used, but in general, a short square pipe is connected and used in many cases. FIG. 4 is a side view showing a conventional example of a vertical frame formed by connecting short pipes and a cross-sectional view of a connecting portion.

[0004] In Fig. 4, reference numeral 6 denotes a square pipe material, and a U-shaped flange 14 for connection is provided at an end portion. The square pipe material to be connected bolts each U-shaped flange 14
Connected by fastening with nuts to form a vertical frame for a stacker crane. A traveling guide rail 15 is fixed to the vertical frame by a guide rail mounting portion 17 on the crane traveling surface of the vertical frame. Reference numeral 16 denotes a guide roller, which is provided on the carriage so as to sandwich the guide rail from both sides.

As described above, in the conventional vertical frame for a stacker crane, since a heavy guide rail is mounted on the crane traveling surface, the weight of the entire frame becomes extremely heavy and the mounting of the guide rail is complicated. there were.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and is directed to a vertical frame for a stacker crane formed by connecting square pipe members. A vertical frame for a stacker crane characterized by providing a pair of flat bars near the corners of the stacker crane, wherein the flat bars are welded by discontinuous fillet welding,
The connection of the square pipe is fixed at the end of the square pipe with the flange protruding in a U-shape facing each other, and on the side without the flange, fixing the joint pipe inside and outside across the square pipe It is characterized by having done.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a sectional view showing a vertical frame for a stacker crane according to the present invention. In the drawing, reference numeral 6 denotes a vertical frame formed of a square pipe material, and a U-shaped flange 7 for connection is provided at an end.

The flange 7 is formed at the end of the square pipe so as to protrude in a U-shape on three sides excluding a part of both sides of the carriage elevating surface and the elevating surface. On the carriage elevating surface, a reinforcing joint plate 8 for connecting both pipes to be connected is attached to the inner surface of the square pipe. A screw hole 9 for connection is formed in the reinforcing joint plate 8 from the surface of the pipe. When connecting the square pipes to form a frame, the U-shaped flanges 7 formed at the ends of the square pipes 1 to be connected are fixed to each other with bolts and nuts while facing each other. On the other hand, the carriage elevating surface has a connecting abutment plate 10 provided with a screw hole corresponding to the screw hole 9 provided in the reinforcing connecting plate 8.
, And connect both pipes with bolts.

Before a vertical frame for a stacker crane having a certain length is formed in this manner, a pair of guide flat bars 11 are welded in advance near the corners on both sides of the carriage lifting / lowering surface of the vertical frame. Attach. The welding of the guide flat bar 11 is performed by discontinuous fillet welding. Weld length is about 1 of welding pitch
/ 3, the leg length is desirably １ ／ or less of the plate thickness.

[0010] By finishing the guide surface of the flat bar by milling or the like after welding, some welding distortion and dimensional error of the square pipe material can be absorbed, and the guide surface can be maintained with high precision. Reference numeral 12 denotes a pair of guide rollers provided on the carriage side, which are driven to rotate so as to sandwich the vertical frame along flat bars provided on both side surfaces of the vertical frame 6. Reference numeral 13 denotes a pair of guide rollers that rotate along the carriage lifting / lowering surface of the vertical frame.

[0011]

As described above, according to the present invention, since the guide member provided on the vertical frame is formed by the flat bar,
Since the entire frame can be reduced in weight compared to the conventional guide rail, the flat bar is mounted near the corner of the frame by discontinuous fillet welding.
The occurrence of welding distortion can be prevented.

Further, since a flat bar, which is lighter than a conventional guide rail, is used, a frame can be manufactured at a low cost, and a flange protruding in a U-shape can be manufactured.
Since the square pipe is fixed by the flange and the joint plate, the flange can be easily attached.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an automatic warehouse.

FIG. 2 is a sectional view and a side view of a vertical frame for a stacker crane according to the present invention.

FIG. 3 is a cross-sectional view showing a state where a stacker crane is attached to the vertical frame of the present invention.

FIG. 4 is a sectional view and a side view of a conventional example of a vertical frame for a stacker crane.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stacker crane 2 Rack 3 Lower rail 4 Upper rail 5 Load 6 Vertical frame 7 U-shaped flange 8 Reinforcement joint plate 9 Screw hole 10 Joint plate 11 Guide flat bar 12, 13 Guide roller 14 U-shaped flange 15 Elevating guide rail 16 Guide roller 17 Guide rail mounting part

Claims (1)

(57) [Claims] 1. A square pipe formed by connecting square pipe materials.
A pair of flat bars are welded near the corners on both sides of the material.
In the vertical frame for tacker cranes, the square pipe is fixed at the end of the square pipe and connected in a state where the flange protruding in a U-shape faces and connected, and on the side without the flange, the square pipe is sandwiched in and out. secured by attaching the joint wear plate, vertical frame for characteristics and to Luz data <br/> Kkakuren that connects the square pipe.