JPS58172101A - Stacker crane having movable step - Google Patents

Abstract

PURPOSE:To facilitate carrying in and out of material by workers by furnishing a movable step from the side so that it may project between the shelves, in an elevator loading table of a stacker crane. CONSTITUTION:A pallet 69 laden with a long-sized material 68 is placed on a carrying conveyer 41, and is carried to the position corresponding to an optional shelf by a stacker crane 12. Then, the carrying conveyer 41 is operated and the laden pallet is fed on to a shelf 4. In case some proper quantity of long-sized material have to be carried onto a shelf, a movable step 3 is projected between the shelves 4, and a worker walks on the movable step 3 carrying the long-sized material to supply it on the shelf 4. In case of carrying out the material, it can be made in a procedure reverse to that of carrying in.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stacker crane having a movable step for loading and unloading long objects such as shaped steel and frame materials onto and off shelves.

Next, the present invention will be explained in detail using illustrated examples.

FIGS. 1 to 15 show an embodiment of the present invention, in which a multi-stage stacked shelf row 6 extending in the front-back direction is arranged in parallel with a crane passage 1 in between, and the multi-stage stacked shelf row 6
The shelf pillars 7 are erected at intervals in the front-rear direction, the beams 8 connecting each shelf pillar 7, and the shelf members fixed to each shelf pillar 7 in a cantilever manner at intervals in the vertical direction. 4, and the upper ends of adjacent multi-tiered stacked shelf rows 6 are connected by a connecting member (not shown), and the lower end of each shelf pillar 7 is fixed to the floor 9.

A lower rail 10 extending in the longitudinal direction is laid and fixed on the lower floor 9'' of the crane passage 1, and an upper rail 11 arranged so as to extend in the longitudinal direction at the upper part of the crane passage 1 is attached to the lower surface of the connecting member. A stacker crane 12 is installed and fixed across the lower frame 13. and runs along the lower rail 10 and the upper rail 11.
It has a frame 16 extending from an upper frame 14 and a vertical frame 15, and a lifting platform 2 that is raised and lowered by a hoist 17 fixed to the frame 16. 18 is fixed, and several running wheels 19 and lower guide rollers 20 are installed.Furthermore, several upper guide rollers 21 are installed on the -4 two-part frame 14, and the upper guide rollers 21 are installed at the center of the front end of the flexible platform 2. A guide roller 23 facing a vertical kite rail 22 fixed to the vertical frame 15 is attached to the center of the rear end. .

The elevating loading platform 2 extends in the front-rear direction, and includes on both left and right sides of the front part of the elevating loading platform 2 and on both left and right sides of the rear part of the elevating loading platform 2.
There are two movable steps (1) at the bottom of each movable step (2) with a U-shaped cross section extending in the left and right direction.
) The support rails 24 are arranged at intervals in the front-rear direction,
The support rail 24 is fixed to the lifting platform 2, and a large number of load supporting rollers 25 and lateral guide rollers 26 are attached to the front and rear lower portions of the movable step B. is arranged in the groove of the support rail 24, and furthermore, a rank 27 extending in the left and right direction is fixed to the lower part of the movable step B, and a rank 27 is fixed to the lower part of the movable step B.
28 is fixed.

At the lower part of the movable step B, a movable step drive device 5 consisting of an electric motor with a speed reducer is fixed to the support rail 24, and a support shaft 29 extending in the front and rear direction is attached to the support rail 2.
A pinion filter O, which is installed on the shaft 29 and meshes with the rank 27, and a driven sprocket 61, which rotates together with the pinion filter O, are rotatably fitted to the support shaft 29, and the driven sprocket 61 and the movable step drive device A transmission chain 66 is wound around the driving sprocket 32 fixed to the output shaft of the step 5, and a striker 4 is fixed to the lower part of the movable step 5. Limit switch LS for position regulation and limit switch LS for retracted position regulation
2 are fixed to the support rail 24, and the movable step drive device 5 drives the drive sprockets 1.62. Transmission chain 36
．． Through the driven sprocket, the movable stepper is moved to the position where it is housed in the lifting platform 2 and to the position where it protrudes between the front and rear shelves 4. The driver's cab 65 and the filter 6 are fixed at the upper part of the center of the end, and the girder filter 7 extending along the front and rear direction is located in two parts of the driver's cab 65 and the filter 6.
A trolley rail 8 extending in the front-rear direction is fixed to the lower surface of the girder 67, and an annular hanging tool 40 is fixed to the I-roly 39 which moves along the kite by the trolley rail 8. A synthetic fiber rope (not shown) is removably attached to the passenger safety belt 40.

A roller conveyor is installed in the longitudinally intermediate portion of the unloading platform 2.
A plurality of transport conveyors 41 are provided at intervals in the front-rear direction, and the conveyors 41 extend in the front-rear force direction and have a large number of rollers 42 arranged at intervals in the left-right direction. A conveyor drive device 46 consisting of an electric motor with a speed reducer fixed to the lifting/lowering platform 2 drives each day roller 42 of each conveyor 41 via a transmission mechanism (detailed illustration is omitted) consisting of a chain, two sprockets, and a sprocket. It is driven at a constant speed.

Telescoping safety fences 44, 45 are arranged at the front and rear portions on both the left and right sides of the lifting platform 2, and each telescoping safety fence 44, 45 is
A large number of fence posts 46 arranged at intervals in the front and rear direction,
A bendable horizontal fence member 48 consisting of a pair of links 47 connecting the upper and lower parts of adjacent fence posts 46, and each fence post 46.
The wheel support member 49 is fixed to the lower end of the wheel support member 49, and a plurality of upper wheels 50 and a plurality of lower wheels 51 are attached to the wheel support member 49.

A soil rail 52 for a fence and a lower rail 56 for a fence, which extend in the front-rear direction, are installed in a position facing both left and right sides of the front part of the lifting platform 2 and a position facing both left and right sides of the rear part of the lifting platform 2, respectively, in the vertical direction. The upper part of the upper fence rail 52 is fixed to the L part holding member 54 fixed to the side surface of the lifting platform 2, and the lower part of the lower rail 5 is connected to the lifting platform. -4 partial wheels 50 and lower wheels 51 fixed to the lower holding member 55 fixed to the side surface of 2 and attached to the wheel supporting member 49 are fitted into the upper rail 52 for the fence and the lower rail 5 for the fence. has been done.

An endless strip 56 made of an endless chain is arranged on both the left and right sides of the stomach unloading platform 2, and extends from the front end to the rear end thereof, and both ends of the endless strip 56 are connected to sprockets attached to both the front and rear ends of the lifting platform 20. A reversing sheave 57 consisting of
The intermediate part of one of the longitudinally moving parts 58 of the endless strip 5B is wrapped around the endless strip 5A, and a plurality of guides 7-b 59 made of sprockets are attached to the middle side of the lifting platform 2.
Further, the intermediate part of the other longitudinally movable part 60 of the endless strip 5B is a guide sheave 61 consisting of a sprocket attached to the intermediate side part of the lifting platform 2;
It is wound around a drive sheave 66 made of a sprocket fixed to the output shaft of an opening/closing drive device 62 made of an electric motor with a speed reducer, and the opening/closing drive device 62 is fixed to the lifting platform 2 .

The wheel support member 49 at the end on the intermediate fire side of the elevating loading platform in one of the telescopic safety fences 44 adjacent to each other in the longitudinal direction is connected to one of the longitudinally movable portions 58 of the endless strip 5B, and is connected to the other telescopic safety fence 44. The wheel support member 49 at the end of the safety fence 45 on the center side of the lifting platform is connected to the other longitudinally movable portion 60 of the endless strip 56, and is connected to the opening/closing drive device 62.
When the endless strip 56 is cyclically driven in the forward or reverse direction, the ends of the front and rear telescoping safety fences 44, 45 on the center side of the lifting platform are simultaneously moved away from each other, or are moved toward each other at the same time. Therefore, the front and rear telescoping safety fences 44, 45 are opened and closed in synchronization. A striker 64 is still fixed to the wheel support member 49 at the end of the telescoping safety fence 45 on the central side of the lifting platform, and a limit switch T for blocking and stopping is operated by the striker 64.
Several limit switches LS3 and LS4 for opening and stopping are installed on the lifting/lowering platform 2.

Support rails 65 for supporting the horizontal portions of the longitudinally movable portions 58 and 60 of the endless strip 5B are arranged on the left and right sides (the front and rear parts of the lull) of the lifting platform 2. The lower part of the fixed safety line 66 is fixed to both the left and right sides of the upper front end and the left and right sides of the upper rear end of the elevating loading platform 2 via a holding member, and the telescopic safety fence 44.
One end of a support member 6) for preventing a long object from falling, which is made of a steel wire coil, is fixed to the outer surface of the intermediate portion of the fence post 45 at 45.

Next, an example of use of the stacker crane of the above embodiment will be explained.

Long objects such as shaped steel, aluminum shaped materials, and other building frame materials 68
When transporting items to a multi-tiered stacked shelf, a pallet 69 loaded with a large number of long items 68, that is, a long item loading pallet, is placed on the transport conveyor 41, and is moved by the stacker crane 12 to a position facing an arbitrary shelf. transported. Next, when carrying a long object loaded onto a pallet onto a shelf, the telescopic safety 11144.45 is first opened, then the transport conveyor 41 is operated, and the long object loading pallet is placed on the shelf material 4. It is sent to the gate and broken. In addition, when carrying an appropriate number of long objects from the long object loading pallet to the shelf, use the telescopic safety 1i.
1111144.45 is closed, and the front and rear movable steps 6 on the loading side are protruded from the side of the lifting platform 2 between the front and rear racks 4, and then two workers move the long object loading pallet. Lift up several long objects, one over each other, and pass them over the retractable safety fences 44, 45 from the fixed step 70 on the lifting platform 2 to the movable step 3.
Walk with a short distance and lower the long object onto the shelf material 4.

When carrying out a long object 68 from the shelf, use the retractable safety fence 44.
, 45 are closed, and the front and rear movable steps 6 on the unloading side are closed.
is protruded from the surface of the elevating loading platform 2 between the front and rear shelves 4, and two workers at any time lift one or more long items above the fence, and at the same time lift the retractable safety fence 44. 45 and walk from the movable step 6 to the hard boss f70 on the lifting platform 2, and lower the long object onto the red 69 placed on the transport conveyor 41.

A long goods receiving station (not shown) having a conveyor for conveying is installed on the floor at the end of the multi-tier stacked shelf row, and a long goods receiving station (not shown) is installed between the elevating loading platform 2 and the station. When transferring an object, the transfer conveyor 41 and the transfer conveyor should be driven in circulation in the same direction to transfer the long object to the receiver.

i11 Embodiment C (in Example C), independent left and right movable steps 6 are provided at the front rear part of the lifting platform 2, but the left and right movable steps f are not independent; As shown in the figure, a movable stethoscope with a length in the H right direction direction that is approximately equal to the width of the lifting platform 2 and a length in the left and right force direction that is shorter than CJ [1] is attached to the front and ”：
1. It may be provided at the rear of the rack so that it can protrude from one side of the lifting platform in the rl+ direction and from other forces. In this case, the height of the lifting platform can be reduced by 111 f, and the number of stator drive devices used can be completely halved. .

Note that a wire rod may be used as the endless strip 56, or a chain may be used for the horizontally flexible yokozuna material 48 and 1 to 1.

When the movable step lever 6 is made to protrude from the lifting platform 2 between the shelves 4 after AiJ using the device 5, the fixed step lever 6 on the lifting platform 2- is fixed. Since a step extending from 70 to 4 days after Mil is formed, a worker can climb the front and rear shelves from above the lifting platform 2. (The worker can walk freely between the shelves 1 and 4, so that workers can lift and lower objects 68 from the loading platform 2'' to the rack 4 and carry them from the loading platform 2'' to the loading platform 2''). After the use of the movable step 6 is finished, the movable step drive device 5 is used to move the long object 68 to the step.

6 can be stored on loading platform 2 at any time, stacker crane 1
1゜ which has the effect of being able to run 2 without any trouble.

[Brief explanation of the drawing]

Figures 1 to 151-1 Part of this invention lJ[! Figure 1 shows an example of a stacker crane.
Figure 2 is a side view of the stacker crane, Figure 6 is a partially cutaway plan view showing an enlarged view of the stacker crane, Figure 4 is a schematic plan view showing the relationship with the bulk storage rack, and Figure 4 is a side view of the stacker crane. Crane-i
Partially cutaway plan view showing %k, Fig. 5 is A of Fig. 4, -,
,,4,1111 Enlarged cross-sectional view, Figure 6 is taken from BB in Figure 5
5. FIG. 7 is an enlarged sectional view taken along the line CC in FIG. 5, FIG. 8 is a cutaway plan view of one of the left and right movable steps, and FIG. -Ff showing the telescopic female full column riJ dynamic support part in the loading platform
li notch side view, No. 10 is a side view showing a part of the telescoping safety 1'1lll, and Fig. 11 is a long v/J fall prevention support against the fence post (=J part A1) near A front view showing
Figure 12 &:, J: 91st n1-1) - Di gland h no 1 song diagram, Figure 16 is in Figure 9 1 - IC win I nor r song diagram, 1st
Figure 4 shows the conveyor throat and conveyor 1-ζ1 on the lifting platform.
1 is a partially cutaway half-view showing a rounded area, and a side view showing a state in which a pallet is placed on the 151st N1L transport conveyor.
, FIG. 16 shows a stacker clay according to another embodiment of the present invention.
FIG. 2 is a schematic plan view showing the relationship between the container and the long object storage shelf. In Figure VC, 1 is the crane passage, 2 is the lifting platform, and 3 is the crane passage.
Qyo Kawari! 1 step, 4 is shelf material, 5il''J: movable step. Kake!
7 is a hoist, 18 is a traveling drive device, 24 is a support rail, 25 is a load support roller, 26 is a lateral guide roller, 27 is a rack, 28 is a shelf, 30 is a binion, 6
1 is 1 no 1: movable snow rocket, 62 is a driving gear, 66 is a transmission chain, 6412- is a striker, 411-1 is a conveyor, 4 is a conveyor j, a polishing device, 7! 14 and 45 are Telescopic safety fence, 49 is a wheel support system, 50 is an upper wheel, 51 is a lower wheel, 52 is a surveying upper rail, 56 is a lower rail for the fence,
56 is an endless strip, 62 is an opening/closing drive device, 66 is one driving sheave, 67 is a support member for preventing a long object from falling, 68 is a long object, 69 is a single let, and 70 is a fixing step. r--m JP-A-58-172101 (13)

Claims (1)

[Claims] In a stacker crane that travels in a crane path 1 between rows of shelves extending in the front and back direction, on both sides of the lifting platform 2, there is a position where movable step racks are stored in the lifting platform 2, and shelf materials 4 in the front and rear from the sides of the lifting platform 2. 1. A stacker crane having a movable step, which is mounted so as to move to a protruding position in between, and is characterized in that a movable step drive device 5 is provided on a lifting platform 2.