JP5564721B2 - Automatic billet storage and transfer device - Google Patents

Description

  The present invention comprises a plurality of storage spaces between struts that run on a plurality of spaced columns of struts that are vertically and aligned in the left-right and front-rear directions that constitute the billet storage location. The present invention relates to an automatic billet storage and conveyance device for horizontally stacking a billet of books or taking it out of a storage space.

  In order to store a large amount of long billets (for example, 12m), the storage location is composed of a plurality of spaced columns arranged vertically and aligned between left and right and front and back, and between adjacent columns. It is known that a plurality of billets (for example, three) are horizontally stacked vertically in a storage space arranged side by side. In this case, it has been common to use a large crane, three at a time, sucked by the electromagnet of the suction head suspended from the crane and transported to or from the storage location. Since a heavy billet is suspended from a crane, a large moment of inertia is exerted by conveyance. Therefore, if this moment of inertia is to be suppressed as much as possible, the operation of a large crane must naturally be performed at low speed and with low accuracy. Therefore, billet storage. There was a drawback that the removal operation could not be performed efficiently and quickly.

  The present invention is an automatic billet storage and conveyance method in which a plurality of billets can be safely transferred at a high speed, high accuracy and safely from a storage location at the same time, and the billet can be stored in the storage space or taken out of the storage space. An object is to provide an apparatus.

In order to achieve this object, the present invention includes a storage space including a plurality of spaced columns of columns arranged in a side-by-side and front-rear direction and having a storage space configured between adjacent columns; An overhead traveling transporter that travels in the front-rear direction over the storage location, a pair of lifting masts provided on the ceiling traveling transporter, and a single support that is horizontally attached to the lower ends of the pair of lifting masts; A pair of suction heads each having an electromagnet for attracting a plurality of billets suspended from the support by a plurality of chains, respectively , in each of the pair of suction heads are arranged in connection with the viewed from the direction of travel of the overhead traveling conveyor, each single that provided adjacent thereto outside the lifting mast is pivotally connected to the frame structure of the overhead traveling conveyor And the clamp arm, holding a travel in the suction head and the billet of the overhead traveling conveyor from outside, so as to open otherwise, further comprises a means for opening and closing the clamp arm, in order to the open-close The above-described means provides an automatic billet storage and conveyance device comprising hydraulic cylinders pivotally connected to the frame structure and the clamp arms.

  As described above, since each suction head is suspended from the support body of the lifting mast by a plurality of chains, when the transporter travels at high speed or stops, the billet is brought together with the suction head due to inertia. According to the present invention, for example, the hydraulic cylinder is operated to close each pair of clamp arms toward each other from the open position so that the billet attracted to the electromagnet of the suction head is held from the outside. Therefore, the suction head and the billet are prevented from swinging due to the traveling of the transport machine, and in addition, it is possible to prevent the suction head and the billet from falling off. As a result, the transport machine can transport the billet at high speed.

It is a perspective view which shows the automatic billet storage conveyance apparatus and stock yard by this invention. It is a front view of the automatic billet storage conveyance apparatus by this invention. It is a side view of the automatic billet storage conveyance apparatus of FIG. It is a side view which shows the conveyance machine of the automatic billet storage conveyance apparatus by this invention. It is a front view of the raising / lowering mast of the automatic billet storage conveyance apparatus by this invention. It is a side view of the raising / lowering mast of FIG. It is a top view of the raising / lowering mast of FIG. It is a front view which shows the part of a suction head in detail. It is a front view which shows the detail of a clamp arm.

  An embodiment of an automatic billet storage and conveyance device according to the present invention will be described with reference to the drawings. FIG. 1 shows a stock yard 2 to which an automatic billet storage and conveyance device 1 of the present invention is applied. The stock yard 2 includes a storage place 5 having a storage space 4 which is composed of a plurality of spaced support columns 3 arranged side by side and arranged in the front-rear direction, and is configured between the adjacent support columns 3 and 3. . A pair of rails 6, 6 are installed on both sides of the storage place 5, and the overhead traveling transport machine 7 travels along the rails 6, 6 on the storage place 5. As can be seen from FIGS. 1 to 4, the transporter 7 travels by means of electric travel wheels 8 on the rails 6, 6 provided at the front and rear corners of the transporter 7.

  As can be seen from FIGS. 1 and 2, a pair of left and right lifting masts 9, 9 are provided on the conveyor 7 between the left and right columns 3 and 3, and the fixed guide structure extends upward from the frame structure 10 of the conveyor 7. An object 11 and a movable mast 13 that is moved up and down by a lifting mechanism 12 in the fixed guide structure 11. The elevating mechanism 12 includes a hydraulic cylinder 14 that is vertically fixed to the fixed guide structure 11 adjacent to the movable mast 13, a pulley 16 that is rotatably provided at the tip of the plunger rod 15, and one end 17. The other end 18 is fixed to the upper part of the movable mast 13 to the fixed guide structure 11, and the chain 19 is hung on the pulley 16. When the hydraulic cylinder 14 is actuated to extend the plunger rod 15, the movable mast 13 rises through the fixed guide structure 11 through the chain 19 engaged therewith, and vice versa. If 15 is contracted, that is, retracted, it is lowered (see FIGS. 3, 5 and 6). In this configuration, the movable mast 13 can be moved at a distance double the expansion / contraction stroke of the plunger rod 15 by the hydraulic cylinder, in other words, at a double speed. Therefore, the movable mast 13 can be moved up and down quickly. it is obvious.

  The elevating mechanism 12 is provided with means for synchronously moving the movable masts 13 and 13 of the pair of left and right elevating masts 9, which are movable as shown in FIGS. A rack 20 fixed in the longitudinal direction along the back surface of the mast 13, a pinion 21 that is rotatably attached to the fixed guide structure 11 and meshes with the rack 20, and a shaft 22 that connects the pinions 21 and 21. And including. Each of the movable masts 13 and 13 is smoothly moved up and down by engagement between rollers 23 and 23 ′ provided in the fixed guide structure 11 and a longitudinal guide rail 24 fixed to the movable mast. Be guided to.

As shown in FIGS. 1, 2, and 8, one support body 25 is horizontally attached to the lower ends of the elevating masts 9, 9, more specifically, the movable masts 13, 13. There, a plurality of the chain 27, and more specifically, the billet 28 is suspended from each support 25 by four chains 27 in the four corners of the suction head 26, and a plurality of (three in this example) It has an electromagnet 29 for adsorption. The electromagnet 29 when the movable masts 13 and 13 are lowered adapts to the billet 28 by the suspension of the suction head 26 from the support 25 by the chain 27.

A pair of clamp arms 30, 30 for holding the suction head and the billet 28 from the outside while the transport machine 7 is traveling are adjacent to the outside of the lifting masts 9, 9 when viewed from the travel direction of the transport machine 7. The upper end of the carrier is pivotally attached 31 and 31 to the frame structure 10 of the carrier 7. When the hydraulic cylinder 32 is pivotally attached 33, 34 to the frame structure 10 and each clamp arm 30, respectively, thus when the movable masts 13, 13 of the lifting masts 9, 9 are in the uppermost position, the clamp arms 30, 30 are The operation of the hydraulic cylinder 32 closes the suction head 25 and the plurality of billets 28 attracted to the electromagnet 29 of the suction head 25.

  According to the present invention, prior to billet conveyance, that is, when the movable masts 13 and 13 of the lifting masts 9 and 9 are lifted after the billet 28 is attracted by the electromagnet 29 of the suction head 26, the hydraulic cylinder 32 is operated. The pair of clamp arms 30, 30 are closed toward each other from the open position, and the suction head 25 and the billet 28 are held from the outside. Accordingly, it is possible to prevent the suction head 26 and the billet 28 from shaking while the transporter is traveling, and to prevent the billet from falling off the suction head.

  In actual work, the transport machine 7 travels on the rails 6 and 6 between the billet loading / unloading location (not shown) and the storage location 5 by the rotation of the electric traveling wheels 8. For example, the movable masts 13 and 13 are moved down at the carry-in location, and a plurality of billets (three in this example) are attracted to the electromagnet 29 of the suction head 25 at a time as described above by exciting the electromagnet 29. Then, the movable masts 13 and 13 are raised and stopped at the uppermost position. At that time, the billet 28 is supported from below by the operation of the clamp arms 30 and 30. After that, the transporter is moved to the storage location, facing the intended storage space 4, the clamp arms 30, 30 are opened, the movable masts 13, 13 are lowered, and the billet is stored in the storage space 4. Thereafter, the electromagnet 29 is demagnetized to release the billet there. When the billet storage operation is completed, the movable masts 13 and 13 are raised again, and then the transporter is run to the loading position, and the clamp arm remains open. By repeating such operations, three billets are stacked vertically at a time. It will be easily understood that the work of taking out the billet from the storage space of the storage place and transporting it to the carry-out place is performed by performing an operation reverse to the operation associated with the storage work.

DESCRIPTION OF SYMBOLS 1 Automatic billet storage conveyance apparatus 2 Stockyard 3 Support | pillar 4 Storage space 5 Storage place 6 Rail 7 Ceiling traveling conveyance machine 8 Electric traveling wheel 9 Lifting mast 10 Frame structure 11 Fixed guide structure 12 Lifting mechanism 13 Movable mast 14 Hydraulic cylinder 15 Plunger rod 16 pulley 19 chain 20 rack 21 pinion 22 shaft 23 roller 23 'roller 24 guide rail 25 support 26 suction head 27 chain 28 billet 29 electromagnet 30 clamp arm 32 hydraulic cylinder

Claims (1)

A storage location including a plurality of spaced columns arranged in a row on the left and right and front and back, and having a storage space formed between adjacent columns, and a ceiling traveling in the front-rear direction on the storage location a traveling conveyor, hanging each pair of lift masts provided on the overhead traveling conveyor, one and supports horizontally mounted to the lower end of the pair of lift masts, by a plurality of chain from the support And a pair of suction heads having an electromagnet for sucking a plurality of billets, and the ceiling traveling transporter disposed in association with each of the pair of suction heads. viewed from the direction of travel, and each pair of clamping arms which are provided adjacent thereto outside the lifting mast is pivotally connected to the frame structure of the overhead traveling conveyor, said overhead traveling transportable Means for opening and closing the clamp arm so as to hold the suction head and the billet from the outside while the machine is running, and to open the billet otherwise, the means for opening and closing the frame structure An automatic billet storage and conveyance device comprising hydraulic cylinders pivotally connected to each clamp arm.

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