JPH0316873A - Cargo handling device - Google Patents

Abstract

PURPOSE:To improve safety by a method wherein a foldable cover supported to a guide rail through a plurality of bodies to be guided is provided between the end part of a moving body and a pit edge part positioned facing the end part, and after movement, a pit surface is covered therewith. CONSTITUTION:A moving body 19 is mounted in a pit 16 reciprocatively between first and second working positions. A foldable cover 30 supported to a guide rail 29 through a plurality of bodies to be guided (roller) 28 is provided between the end part of the first working position side of the moving body 19 and a forming edge pat 27 of the pit 16. A span plate 40 with which a position above the folded cover 30 is covered is disposed flush with a floor surface in the vicinity of the pit forming edge part 27. Thus, when the moving body 19 is moved to the second working position, the upper surface of the pit 16 opened due to movement is covered with the cover 30 extended due to movement of the moving body 19, and a worker is prevented from falling in to the pit.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a material handling device provided outside the end of a shelf in, for example, an automated warehouse.

2. Description of the Related Art Conventionally, this type of device has been disclosed, for example, in Japanese Unexamined Patent Publication No. 58-2
A warehouse entry/exit relay device disclosed in Japanese Patent No. 6705 is provided. In this conventional type, a pit is provided outside the end of the shelf, and within this pit is provided a table that is supported and guided by a main frame and is movable back and forth, and a cart can be freely driven onto this table.

Therefore, by positioning the table at the first loading/unloading work location, the cart can be loaded onto and off the table, and the table with the cart mounted thereon can be moved back and forth between the second loading/unloading work location.

Problems to be Solved by the Invention According to the above conventional method, when the table is moved to the second loading/unloading work area, the inside of the pit becomes open on the side of the first loading/unloading area, and there is a risk of the worker falling. . In particular, since workers perform various tasks at the first loading/unloading work area, falls are likely to occur.

An object of the present invention is to provide a cargo handling device that can automatically close the pit surface where a movable body has moved.

Means for Solving the Problems-1 In order to achieve the second object, the material handling device of the present invention has the following features:
A movable body for cargo handling that can freely travel back and forth between the first working position and the second working position is provided in the pit 1~, and the end of this movable body on the first working position side and this end A collapsible cover is supported by a guide rail via a plurality of guided objects and is provided between the opposing pit I and the forming edge.

According to the structure of the present invention, when the movable body stops at the first working position, the cover is automatically folded.

When the movable body is moved to the second working position, the cover is gradually expanded and automatically closes the pit surface where the movable body has moved. Therefore, when the worker tries to fall into the pit, the cover will catch the load, and the load at that time can be received by the deployment force of the movable body and the support by the guide rail via the guided body.

Example An embodiment of the present invention will be described below based on the drawings.

In FIG. 4, ] are shelves arranged side by side, and have a plurality of compartment storage spaces 2 in the horizontal and vertical directions, and each compartment storage space 2 can store cargo 3 .

4 is a passage formed between the shelves 1, and a ceiling rail and a floor rail are provided. Reference numeral 5 denotes a loading/unloading device disposed in the passageway 4, which is supported and guided by the ceiling rails and floor rails and can freely travel back and forth on a fixed path 6 along the shelf. This loading/unloading device @5 is located on the right side of a pair of front and rear bosses 1 to 7, and a lifting platform 8 guided by these bosses I to 7 is provided with a loading/unloading tool (fork) 9 that can move in and out in the lateral direction. A material handling device 15 is provided outside the end of each shelf 1-. This material handling device 15 is located at a first working position 1 in an elongated pit 16.
It has a movable body 19 for cargo handling that can freely move back and forth between the work position 7 and the second working position l8. Here, the first working position 17 is a position where the load 3 is delivered by, for example, a forklift 1, and the second working position 18 is a position where the load 3 is delivered by the loading/unloading device 7, and the shelf]- It is constructed by removing the bottom end of the .

In FIGS. 1 to 3, the movable body 19 is in the form of a 3-4 trolley, and a carriage 21 provided at the bottom of the main body 20 is placed on a rail 22 laid on the floor of the pit 16. By doing so, it is possible to freely move back and forth between the two positions 17 and 18.

At that time, the round trip will be conducted at Phl. In addition to connecting one part of the endless chain disposed in the main body 20 to the main body 20, a chain drive type in which the endless chain is linked to a forward/reverse drive device,
This is carried out in a self-propelled manner in which a traveling drive device installed at 0 is linked to a vehicle 21. A load receiving frame 24 is provided on two sides of the main body 20 via a lifting device 23 in the form of a pantograph, for example, and load receiving members 25 and guide plates 26 are provided at the upper four corners of the load receiving frame 24. A plurality of rollers (an example of a guided body) 28 are connected to a guide rail 29 between the end of the movable body l9 on the first working position 17 side and a pit forming edge 27 opposite to this end. A supported and collapsible cover 30 is provided. That is, the cover 30 consists of a plurality of cover plates 33 connected alternately by hinges 31 for inward folding and hinges for outward folding 32, and the roller 28 is attached to the outer end of the hinge shaft 34 of each hinge for outward folding 32. The channel-shaped guide rails 29 for supporting and guiding these rollers 28 are attached to both sides of the pit 6 via attachment members 35. One end of the group of cover plates 33 has a pit forming edge 27
via the mounting member 36 and the pit-side hinge 37, and the other end is connected to the stay 38 from the movable body 19.
The movable body side hinge 39 is connected to the movable body side hinge 39. Near the pit forming edge 27 is a folded cover 3.
A spanning board 40 is disposed to cover the top of 0, and this spanning board 40
is flush with the floor.

According to the embodiment described above, the target compartment storage space 2 is created by the combined operation of the moving action of the loading/unloading device 5 in the passage 4, the up/down movement of the lifting platform 8, and the lateral movement of the loading/unloading tool 9. , the movable body 1 stopped at the second working position 18
The cargo 3 can be delivered to and from the terminal 9. At this time, the following actions are performed in the material handling device 15. That is, in FIGS. 1 and 3, the movable body 19 is stopped at the first working position 17. At this time, the cover 30 has hinges 31, 32, 37,
The space between each cover plate 33 is folded via 39,
And it is housed below the gangplank 40. In this state, by raising the receiving frame 24 via the lifting device 23 and projecting it from the pit 6, loading and unloading can be carried out with a forklift vehicle or the like. For example, when storing the cargo 3, the cargo receiving frame 24 that supports the cargo 3 via the cargo receiving member 25 is lowered to the state shown in FIGS. 1 and 3. Then, the movable body 19 is moved and stopped at the second working position 18. At this time, the cover 30 is unfolded and becomes a flat plate as shown in FIG. 2, and automatically adjusts the bit surface. It will become blocked.

Therefore, when the worker tries to fall into the pit 16, the cover 30 will catch the load, and the load at that time can be caught by the deployment force of the movable body 19 and by being supported by the guide rail 29 via the roller 28. . When the movable body 19 reaches the second working position 18, its load receiving frame 24 is raised', and the load 3 is received by the loading/unloading device 5. Note that leaving the store is performed by reverse operation, and at that time, the cover 30 is automatically folded as the movable body 19 moves.

Effects of the Invention According to the present invention having the above structure, when the movable body stops at the first working position, the cover can be automatically folded;
By moving the movable body to the second working position, the cover can be expanded and the pit surface left behind by the movable body can be automatically closed. Therefore, if the worker tries to fall into the pit, the cover can catch the load, and the load at that time can be reliably caught by the deployment force of the movable body and the support by the guide rail via the guided body. can. This allows work near the pit to be carried out safely.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a longitudinal side view of the cover in the folded state, FIG. 2 is a partially cutaway side view of the cover in the unfolded state, and FIG. 4 is a schematic plan view when it is adopted in an automated warehouse. Work/Shelf, 3... Load, 5... Loading/unloading device, 9... Loading/unloading tool, 15. Load handling device, 16. Pit, 17... First working position, 18 Second working position, l9... Movable. body,
23. Elevating device, 24. Load receiving frame, 27. Pit 1~
Shape edge part, 17 8 28... Roller (guided body), 29... Guide rail, 30... Cover, 3l... Hinge for inward folding,
32... Hinge for outward bending, 33... Cover plate, 34
...Hinge axis, 37...Pit side hinge, 39...
・Movable side hinge, 40... spanning board.

Claims (1)

[Claims] 1. A movable body for cargo handling that can freely travel back and forth between the first working position and the second working position is provided in the pit, and the end of this movable body on the first working position side and this end are A cargo handling device characterized in that a foldable cover is provided between opposing pit forming edges and supported by a guide rail via a plurality of guided objects.