JPS58167306A - Stacker crane having open-close type safety fence - Google Patents

Abstract

PURPOSE:To prevent dropping of a long-sized object during running of a stacker crane and the vertical movement of an elevating load-carrying platform, by installing telescopic system safety fences at both sides of the elevating load- carrying platform of the stacker crane. CONSTITUTION:Endless conditions, cyclically driven by a driving gear for opening and closing, are mounted to opposite sides of an elevating load-carrying platform 2, telescopic system safety fences 7 and 8, in which fence stays 5 are coupled together through flexible lateral fences 6, are longitudinally and movably mounted to opposite sides of the elevating load-carrying platform 2. The side end at the intermediate part of the load-carrying platform in one safety fence 7 is coupled to one longitudinal-moving part 9 for one of the endless conditions 4, the side end at the intermediate part of the load-carrying platform in the other safety fence 8 is linked to the other longitudinal-moving part 10 for the other of the endless conditions, and a conveyor for conveyance is installed at the intermediate part of the elevating load-carrying platform 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stacker crane having an openable and closable safety fence 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.

The drawing shows one embodiment of the present invention, in which multi-tiered stacked shelf rows 12 extending in the front-back direction are arranged in parallel across the crane passage 1, and the multi-tiered stacked shelf rows 12 are spaced apart in the front-back direction. A beam 14 connects the shelf pillar 1 and each shelf pillar 13 erected at a distance, and shelf members 15 are fixed in a cantilever manner to each shelf pillar 1 at intervals in the upper direction. is configured,
The upper ends of adjacent multi-tier stacked shelf rows 12 are connected by a connecting member (not shown), and the lower end of each shelf pillar 16 is fixed to the floor 16.

A lower rail 17 extending in the longitudinal direction is laid and fixed on the floor 16 at the lower part of the crane passage 1, and an upper rail 18 arranged 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 19 is installed and fixed across the lower frame 20. and runs along the lower rail 17 and the upper rail 18.
The lower frame 20 has a frame 23 consisting of an upper frame 21 and a vertical frame 22, and a lifting platform 2 that is raised and lowered by a hoist 24 fixed to the frame 26.
A running/driving drive device 25 is fixed to the drive unit 25, and a running wheel 26 and a lower guide roller 27 are attached to the upper frame 21, and an upper guide roller 28 is attached to the upper frame 21. At the center of the end is a vertical guide rail 29 fixed to the vertical frame 22.
An idle roller 30 is attached opposite to.

The elevating cargo platform 2 extends in the front-rear direction, the lower part of the driver's cab 31, 32 is fixed to the front and rear parts of the elevating cargo platform 2, and the girder 66 extending in the longitudinal direction is connected to the driver's cab 3.
1.32 is constructed and fixed over the top of the
A trolley rail 34 extending in the front-rear direction is fixed to the lower surface of 3, and a ring-shaped hanging tool 36 is fixed to a trolley 65 that moves while being guided by the trolley rail 34. A connected synthetic fiber rope (not shown) is removably locked.

A plurality of conveyor conveyors 11 made of roller conveyors are provided at intervals in the longitudinal direction of the lifting platform 2, and the conveyors 11 extend in the longitudinal direction and are spaced apart in the left-right direction. Each conveyor 1 is driven by a conveyor drive device 68 having a large number of rollers 67 arranged and consisting of an electric motor with a speed reducer fixed to the lifting platform 2.
Each of the rollers 37 of 1 is driven at a constant speed via a transmission mechanism (details not shown) consisting of a chain and a sprocket.

On both left and right sides of the front part of the lifting platform 2, and on both left and right sides of the rear part,
A movable step 39 is disposed respectively, and two support rails 40 having a U-shaped cross section extending in the left-right direction are disposed at the lower part of the movable step 39 at an interval in the front-rear direction.
The support rail 40'' is fixed to the lifting platform 2, and a large number of load supporting rollers 41 and lateral guide rollers 4 are provided at the front and rear lower portions of the movable step 39.
2d; attached, each row 241, 42 is attached to the support rail 4
Further, a rack 4 is fixed to the lower part of the movable step 69 and extends in the left-right direction, and a fence 44 is fixed to the protruding end, that is, the outer end of the movable step 39. .

At the lower part of the movable step 39, a step drive device 45 consisting of an electric motor with a speed reducer is fixed to the support rail 40, and a support shaft 46 extending in the front and rear direction is connected to the support rail 4.
A pinion 47 which is installed on the shaft 46 and meshes with the rack 46 and a driven sprocket 48 which rotates together with the pinion are rotatably attached to the support shaft 46, and the output of the driven sprocket 48 and the step drive device 45 is A transmission chain 50 is wound around a drive sprocket 49 fixed to the shaft, and a striker 51 is fixed to the lower part of the movable step filter 9, and a limit switch LSt for regulating the protruding position and a retracting limit switch are operated by the striker 51. Position regulation limit switch LS2
is fixed to the support rail 40, and the step drive device 4
5 drives the drive sprocket 49. Transmission chain 50.
Driven sprocket 48. Pinion 47 and rack 43
via which the movable step '59 is moved into the extended and retracted positions.

Telescoping safety fences 7, 8 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 7°8 has a large number of fence posts 5 arranged at intervals in the front and back direction, A bendable horizontal fence member 6 consisting of a pair of links 52 connecting the upper and lower parts of adjacent fence posts 5, a wheel support member 53 fixed to the lower end of each fence post 5, and a wheel support member 53 fixed to the lower end of each fence post 5. A plurality of upper wheels 54 and a plurality of lower wheels 55 are attached.
It is composed of.

A soil rail 56 for a fence and a lower rail 57 for a fence, which extend in the front-rear direction, are provided at 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 fence soil rail 56 is fixed to an upper holding member 58 fixed to the side surface of the lifting platform 2, and the lower part of the lower dexterity rail 57 is arranged in parallel to each other at intervals. An upper wheel 54 and a lower wheel 55, which are fixed to a fixed lower holding member 59 and attached to the wheel support member 56, are fitted into a fence top rail 56 and a lower dexterity rail 57.

An endless strip 4 made of an endless chain extending from the front end to the rear end is arranged on both the left and right sides of the lifting platform 2, and both ends of the endless string 4 are connected to sprockets attached to both the front and rear ends of the lifting platform 2. The middle part of one of the longitudinally movable parts 9 of the endless strip 4 is wrapped around a reversing sheave 60 consisting of a plurality of sprockets attached to the middle side of the lifting platform. , and further the other back-and-forth moving portion 10 in the endless strip 4
A guide sheave 62 consists of a sprocket attached to the middle side of the lifting platform 2, and a drive sheave 62 consists of a sprocket fixed to the output shaft of an opening/closing drive device consisting of an electric motor with a reduction gear. The opening/closing drive device 6 is fixed to the lifting platform 2.

The wheel support member 56 at the end on the center side of the elevating platform in one of the telescoping safety fences 7 adjacent to each other in the longitudinal direction is connected to one of the longitudinally movable portions 7 of the endless strip 4, and is connected to the other telescoping safety fence 7. The wheel support member 53 at the end on the center side of the lifting platform 8 is connected to the other front-back moving part 10 of the endless strip 4, and the endless strip 4 is cyclically driven in the forward or reverse direction by the opening/closing drive device #6. Then, the ends of the front and rear telescoping safety fences 7.8 on the center side of the lifting platform are simultaneously moved away from each other, or simultaneously moved toward each other, so that the front and rear telescoping safety fences 7, 8 are opened and closed in synchrony. Further, a striker 70 is fixed to the wheel support member 53 at the end of the telescopic safety fence 8 on the central side of the lifting platform, and the limit switch LS3 for blocking and stopping and the limit switch LS for stopping opening operated by the striker 70 are operated by the lifting platform. It is attached to 2.

Endless strips 4 are installed at the front and rear portions on both the left and right sides of the lifting platform 2.
A support rail 64 is arranged to support the horizontal portions of the longitudinally movable parts 9 and 10, and the support rail 64 is fixed to the lifting platform 2 via a holding member, and is provided on both left and right sides of the upper front end of the lifting platform 2. The lower part of a fixed safety fence 66 is fixed to both left and right sides of the upper rear end, and furthermore, on the outer surface of the middle part of the fence post 5 in the retractable safety fence 7.8, a support member made of a steel wire coil to prevent a long object from falling is provided. One end of 67 is fixed.

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

Long objects such as shaped steel, aluminum shaped materials, and other building frame materials 68
When conveying to a multi-tier stacking shelf, a pallet loaded with a large number of long objects 68]・69, that is, a long object loading pallet is placed on the transport conveyor 11, and moved to a position opposite to an arbitrary shelf by a stacker crane. transported to. Next, when carrying long items loaded onto pallets onto the shelves, the retractable safety fences 7 and 8 are first opened, and then the transport conveyor 1
1 is operated, and a pallet loaded with long objects is sent to one of the shelf materials 15. In addition, when carrying a suitable number of long objects from the long object loading pallet to the shelf, the telescopic safety fences 7 and 8 are closed, and the front and rear movable steps 39 on the loading side are moved from the side of the lifting platform 2 to the front and rear. It is protruded between the shelf materials, and then two workers lift one or more long objects from the long object loading pallet and move it by passing it over the telescoping safety fences 7 and 8. Walk to step 39 and lower the long object onto the shelf material 15.

When carrying out a long object 68 from the shelf, use the retractable safety fence 7,
8 is closed, and the front and rear movable steps 69 on the unloading side are projected from the side of the lifting platform 2 between the front and rear shelves, and then two workers move one or more of the shelves on the shelves. While lifting the long object, the long object is passed over the retractable safety fences 7 and 8 and walked from the movable step 69 to the lifting platform 2, and the long object is placed on the pallet 69 placed on the conveyor 11. rain

Furthermore, on the floor at the end of the multi-tiered stacked shelf row, a long goods receiving station/(not shown) having a conveyor for conveying the goods is installed, and a long goods receiving station/(not shown) is installed on the floor at the end of the stacked shelf row. When the object is to be transferred, the conveyor conveyor 11 and the transfer conveyor may be driven in circulation in the same direction to transfer the long object.

In the embodiment described above, independent movable steps 69 are provided at the front and rear portions of the lifting platform 2, but the movable steps are not independent on the left and right, and are moved in the left and right directions approximately equal to the width of the lifting platform 2. A movable step having a length in the left-right direction that is shorter than the length or the width thereof may be provided at the front and rear parts of the lifting platform so as to be able to protrude from one side and the other side in the width direction of the lifting platform. In this case, the width of the lifting platform can be reduced and the number of step drive devices used can be halved.

When carrying out this invention, a wire rope may be used as the endless strip 4, and a chain may be used as the bendable horizontal fence member 6.

According to this invention, the telescoping safety fences 7 and 8, which are opened and closed by the opening/closing drive device, are provided on both the left and right sides of the lifting platform 2 in the stacker crane. By keeping the safety fences 7 and 8 closed during lifting and lowering, long objects 6 due to vibration etc.
8 can be reliably prevented from falling, and the lifting platform 2 can be reliably prevented from falling.
When carrying a pallet loaded with long objects to the shelf, the safety fences 7 and 8 are opened and the conveyor 11 is operated, so that the pallet loaded with long objects on the conveyor 11 can be transported to the fence without any hindrance. Can be transported. Also, lifting platform 2
An endless strip 4, which is circulated and driven by an opening/closing drive device B, is installed so as to extend in the front-rear direction, and an end on the intermediate side of the loading platform in one of the telescoping safety fences 7 is connected to the endless strip. 4, and the intermediate side end of the loading platform in the other telescoping safety fence 8 is connected to the other longitudinally movable portion 10 in the endless strip 4, so that the common opening/closing A simple mechanism using the drive device 6 allows for two sets of telescopic safety, front and rear.

Effects such as being able to synchronize the fences 7 and 8 and open and close them at the same time can be obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a schematic plan view showing the relationship between the stacker crane and the long object storage rack, FIG. 2 is a side view of the stacker crane 7, and FIG. 4 is a partially cutaway side view showing a part of the stacker clay 7 on an enlarged scale, FIG. 5 is a partially cutaway plan view showing a part of the stacker clay 7, and FIG. Fig. 6 is a side view showing a part of the retractable safety fence, Fig. 7 is a front view showing the vicinity of the attachment part of the support member for preventing a long object from falling to a fence post, and Fig. 8 is a side view showing a part of the retractable safety fence. A cross-sectional view taken along line A-A in Figure 5,
9 is a sectional view taken along the line B-B in FIG. 12 is an enlarged sectional view taken along the line D-D in FIG. 11, FIG. 13 is an enlarged sectional view taken along the line E-E in FIG. 11, and FIG. 14 is a cutaway plan view showing one of the left and right movable steps. , FIG. 15 is a side view showing a state in which a pallet is placed on a conveyor conveyor. In the figure, 1 is a crane passage, 2 is a lifting platform, a driving device for opening and closing the filter, 4 is an endless strip, 5 is a fence post, 6 is a horizontal fence material,
7 and 8 are retractable safety fences, 9 and 1D are front and back moving parts, 11 is a conveyor, 12 is a multi-tier stacked shelf row, 13
is a fence post, 15 is a shelf material, 171d below! Rail, IF3 is upper mv-le, 19U stacker crane, 24 is hoisting machine, 2
5 is a traveling drive device, 67 is a roller, '58 is a conveyor drive device, 39 is a movable step, 40 is a support rail, 4
1 is a load supporting roller, 42 is a lateral guide roller,
4'5 is a rack, 45 is a step drive device, 47 is a pinion, 51 is a striker%, 53 is a wheel support member, 54
is the upper wheel, 55 is the lower wheel, 56 is the dexterous upper rail,
57 is a dexterous lower rail, 60 is an inversion sheep, 61 and 62 are guide sheeps, 63 is a drive sheep, 64 is a support rail, 67 is a support member for preventing long objects from falling, 6B is a long object, 69 is a pallet, 70 is a striker, LSI is a limit switch for regulating the protruding position, LS2 is a limit switch for regulating the retracted position, LS is a limit switch for blocking and stopping, and LS is a limit switch for opening and stopping.

Claims (1)

[Claims] Endless strips 4, each driven in circulation by an opening/closing drive device 6, are installed so as to extend in the front and back direction on both left and right sides of a lift platform 2 in a stacker crane that travels in a crane passage 1 between rows of shelves extending in the front and back direction. In addition, at the front and rear portions on both the left and right sides of the lifting platform 2, there are telescopic safety fences 7°8, which are constructed by connecting a large number of fence posts 5 via bendable crossbar members 6, and are movable in the front and rear directions. The intermediate side end of the loading platform of one telescoping safety fence 7 is connected to one of the longitudinally movable portions 9 of the endless strip 4, and the intermediate end of the loading platform of the other telescoping safety fence 8 is connected to the intermediate side end of the loading platform. A stacker crane having an openable/closable safety fence, characterized in that a conveyor 11 is connected to the other longitudinally movable portion 10 of the endless strip 4 and is provided at an intermediate portion of the lifting platform 2.