JPH05306016A - Cargo handling device for air cargo - Google Patents

Abstract

PURPOSE:To facilitate loading and unloading of a cargo on/from a work bed by a fork lift by installing the work bed so as to lift smoothly, and disposing multiple drive tires and rotating elements on the load deck of the work bed so as to protrude and retreat smoothly respectively. CONSTITUTION:A storage pit 3 is formed at the lower part of a floor surface 1, in which a work head 8 is disposed so as to be lifted smoothly through a lifting mechanism 8. At the load deck 26 of the work head 9, a center pivot 42, plural driven tires 58 for carrying-in and-out in a cross direction, plural driven tires 59 for carrying-in and-out in a horizontal direction, plural driven tires 60 for directional conversion and plural ball-shaped rotating elements 94 are disposed respectively so as to protrude and retreat from/into the upper surface of the load deck 26. The center pivot 42 is protruded upwards from the upper surface of the load deck 26 together with the respective driven tires 60. Moreover, the respective driven tires 58, 59 and the respective rotating elements 94 are protruded selectively from the upper surface of the load deck 26. It is thus possible to facilitate loading and unloading of a cargo on/from the work head 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo handling device for air cargo, and relates to cargo handling work such as stacking and unloading cargo to be loaded into or unloaded from an aircraft.

[0002]

2. Description of the Related Art Heretofore, as a cargo handling device of this type, an arrangement described in, for example, Japanese Patent Laid-Open No. 62-231900 has been known. According to the configuration described in this publication, a platform is movably connected to a vehicle body of a container loader equipped with wheels via a link mechanism, and a drive roller for transferring cargo in the Y direction is provided at a center portion in the width direction of the platform. In addition to being vertically movable, a large number of drive tires for transferring cargo in the X direction are vertically movable on both sides of a center line in the width direction of the platform, and a large number of ball casters are provided on substantially the entire surface of the platform. Arranged and fixed so that the upper surface of the drive roller or the upper surface of the drive tire is higher than the upper surface of the ball casters depending on the transportation direction of the cargo, and a large number of free rollers having free rollers on the outer circumference are arranged on the entire surface of the platform. It is a configuration to be installed.

[0003]

In the structure described in the above publication, a platform for transporting cargo in the Y direction and the X direction is provided on the vehicle body so as to be able to move up and down. The cargo is loaded on this platform. In this case, even if the platform is lowered to a low level, it cannot be lowered to the same level as the floor surface, and many ball casters are fixedly arranged on the substantially entire surface of this platform. The forklift could not enter the cargo while supporting the cargo on top of it, and the cargo could not be carried on the platform.Because there is no means to change the direction of the carried cargo on the platform, the cargo was carried on the platform. In this state, the drive rollers for transferring the cargo in the Y direction and the multiple driving tires for transferring the cargo in the X direction are lowered to increase the cargo. Even if supported by a ball caster, it is extremely difficult to change the direction of the cargo by hand if the cargo is heavy in weight like a container, and if the platform is large, the cargo cannot be carried in. Since it is difficult to move and load cargo on the opposite side to the direction, it is not possible to load cargo on the entire surface of the platform at once, and it is difficult to unload the cargo stacked on the platform from the platform. Therefore, it is not preferable for improving the loading work efficiency when loading cargo on the platform, and stacking work for stacking cargo on the entire surface of the platform in a high orderly and stable state and unloading cargo on the platform. There is a problem that a lot of work is required for the unloading work.

The present invention has been made in view of the above points, and the work bed can be lowered to the same level as the floor surface, and the forklift can be directly loaded while the cargo is supported on the work bed to load the cargo. It can be carried in, the cargo carried on the work bed can be easily redirected, and the cargo can be loaded on the entire surface of the work bed at one time. Therefore, when loading the cargo on the work bed, The loading work efficiency can be improved, cargo can be stacked on the entire work bed in a high, orderly and stable state, and the cargo stacked on the work bed can be easily unloaded from the work bed. It is an object of the present invention to provide a cargo handling device for air cargo that is capable of handling.

[0005]

SUMMARY OF THE INVENTION An air cargo cargo handling device according to the present invention comprises a storage pit having an opening and an exit on a floor surface, a fixed base disposed at the bottom of the storage pit, and a lifting / lowering operation on the fixed base. And a work bed for loading and unloading cargo that can be raised and lowered with respect to the entrance and exit through a mechanism, the work bed has a cargo bed, and a center pivot is provided at the center of the cargo bed with respect to an upper surface of the cargo bed. A plurality of driving tires that are provided so as to be retractable and retractable in the front-rear direction of the loading platform with respect to the upper surface of the loading platform, and that are driven in the left-right direction in the left-right direction of the loading platform. Are provided on the upper surface of the loading platform so as to be retractable from each other, and a plurality of driving tires for direction change are provided on the upper surface of the loading platform so as to be retractable from each other and located on a virtual circle locus centered on the center pivot. A large number of ball-shaped rotating bodies are provided at intervals in the front-rear direction and the left-right direction of the loading platform so as to be retractable from the upper surface of the loading platform, respectively, and the multiple rotating bodies are attached to the loading platform in the front-back direction. A group of a plurality of driving tires for carrying in and out, a plurality of driving tires for carrying in and out laterally, and a plurality of driving tires for carrying out the direction change are selectively projected, and the center pivot is for the direction changing work. With a plurality of driving tires.

[0006]

In the cargo handling apparatus of the present invention, when the cargo is loaded onto the work bed, when the forklift is loaded onto the bed of the work bed and the cargo is loaded, the lifting mechanism on the fixed base is operated. Then, the work bed is lifted and lowered by the lifting mechanism, and the loading platform of the work bed is adjusted and set to approximately the same level as the floor surface. Further, a large number of ball-shaped rotating bodies provided on the bed of the work bed, a plurality of driving tires for carrying in and out in the front-rear direction, a plurality of driving tires for carrying in and out in the left-right direction, a plurality of driving tires for changing direction, and a center pivot. All of the above are set lower than the upper surface of the loading platform.

Then, a forklift supporting a pallet on which cargo is placed is supported by a fork from the floor, and the forklift is moved on the cargo bed, so that the forklift can easily carry the cargo on the cargo bed. Be delivered to. As described above, in the case of a relatively small cargo supported by the forks of a forklift, the forklift is directly loaded onto the loading platform, and the cargo is sequentially carried over the entire surface of the loading platform by the forklift, and the cargo is loaded onto the loading platform. It is loaded orderly.

Next, when a pallet is loaded from the front-rear direction onto the bed of the work bed and cargo is loaded onto the pallet, a large number of ball-shaped rotating bodies are projected at the same height on the bed. In this state, a plurality of driving tires for loading and unloading in the front-rear direction are projected at the same height, and the upper surface of each driving tire is set to a position slightly higher than the upper surfaces of the plurality of ball-shaped rotating bodies. Further, all of the plurality of drive tires for carrying in and out in the left and right direction, the plurality of drive tires for direction change, and the center pivot are all set to a position lower than the upper surface of the luggage carrier. Further, the elevating mechanism on the fixed base is operated, the elevating mechanism elevates and lowers the work bed, and a plurality of driving tires for loading and unloading the work bed in the front-rear direction are respectively provided at predetermined height positions for loading the pallet. Set to.

A plurality of driving tires for loading and unloading in the front-rear direction are rotationally driven at the same speed in the pallet loading direction in the same direction, and the pallet is loaded into one end portion in the front-rear direction of the bed of the work bed. This pallet is sequentially conveyed toward the other end in the front-rear direction of the loading platform by a plurality of driving tires for loading and unloading in the front-rear direction, and when the pallet is loaded in order on the loading platform, it is loaded and unloaded in the front-rear direction. The rotational driving of the plurality of driving tires is stopped, and the pallet is supported by the plurality of driving tires for carrying in and out in the front-rear direction and a large number of ball-shaped rotating bodies. Then, the cargo is loaded on the pallet.

Next, when a pallet is loaded on the bed of the work bed from the left and right and cargo is loaded on the pallet, a large number of ball-shaped rotating bodies are projected at the same height on the bed. In this state, a plurality of left and right driving tires for loading and unloading are projected at the same height, and the upper surface of each driving tire is set to a position slightly higher than the upper surfaces of the ball-shaped rotating bodies. Further, all of the plurality of drive tires for carrying in and out in the front-rear direction, the plurality of drive tires for direction change, and the center pivot are all set to a position lower than the upper surface of the luggage carrier. Further, the elevating mechanism on the fixed base is operated, and the elevating mechanism elevates and lowers the work bed, and a plurality of driving tires for loading and unloading the work bed in the left and right direction are respectively provided at predetermined height positions for loading the pallet. Set to.

Then, a plurality of driving tires for loading and unloading in the left and right direction are rotationally driven at the same speed in the pallet loading direction in the same direction, and the pallet is loaded into one end portion in the left and right direction of the bed of the work bed. This pallet is sequentially conveyed toward the other end in the left-right direction of the loading platform by a plurality of driving tires for loading / unloading in the left-right direction, and when this pallet is loaded in order on the loading platform, it is loaded in the left-right direction. The rotational driving of the plurality of driving tires is stopped, and the pallet is supported by the plurality of driving tires for carrying in and out in the left-right direction and a large number of ball-shaped rotating bodies. Then, the cargo is loaded on the pallet.

Next, in the case of loading and stacking aviation cargo on the pallet loaded on the bed of the work bed from the front-rear direction and the left-right direction, for example, a fork of a forklift is loaded on the pallet. Cargo is sequentially loaded by the loading means and stacked. When carrying in cargo to this pallet, if it is difficult to carry the cargo onto the entire surface of the pallet due to the carrying-in means and work conditions, and if it is carried closer to one side of the pallet, a plurality of front and rear drive tires for carrying in and out. In addition, all of the plurality of drive tires for loading and unloading in the left and right direction are set to be lowered to a position lower than the upper surface of the loading platform, and the pallet into which the cargo is loaded is supported by a large number of ball-shaped rotating bodies.

Then, the rotatable center pivot is raised, and the center pivot is pressed against the lower surface of the pallet. In addition, a plurality of driving tires for direction change are lifted, the plurality of driving tires are pressed against the lower surface of the pallet, and the plurality of driving tires are rotationally driven at the same speed in the same pallet rotation direction. Then, the pallet is rotated about the center pivot by the plurality of drive tires, and the other side, which cannot carry the cargo on the pallet, is turned to a position where the cargo can be carried. Then, the cargo can be sequentially loaded again on the pallet by the loading means and piled up, and the cargo can be piled up orderly on the pallet.

Next, when the cargoes are piled high on the pallet of the work bed and it is difficult to further stack the cargoes on these cargos, the elevating mechanism on the fixed base is operated, and the elevating mechanism is operated. At, the work bed is lowered to a position lower than the doorway of the floor, and the upper surface of the cargo stacked on the work bed is set to a predetermined height position where the cargo can be easily carried in. Then, the cargo carried into the pallet is carried again by the carrying-in means and piled up. Then, when cargoes are piled high on the pallets and it is difficult to further pile cargos on these cargos, the upper surface of the cargos piled on the work bed as described above is
Further lower the product to a predetermined height where cargo can be easily carried in.
In this manner, since the cargoes are piled up on the pallets high, the work beds are sequentially lowered by the elevating mechanism so that the cargos can be loaded and piled on the pallets at a predetermined height.

Next, when the cargo piled up on the pallet is unloaded and carried out, the elevating mechanism on the fixed base is actuated, the elevating mechanism elevates the work bed, and the upper surface of the work bed is raised. Set up above the floor entrance. For example, when unloading a cargo in the front-rear direction and unloading the cargo in the front-rear direction, with a number of ball-shaped rotating bodies projecting at the same height on the loading platform, the front-rear loading and unloading A plurality of driving tires are projected at the same height, and the upper surface of each driving tire is set in pressure contact with the lower surface of the pallet. Further, all of the plurality of drive tires for carrying in and out in the left and right direction, the plurality of drive tires for direction change, and the center pivot are all set to a position lower than the upper surface of the luggage carrier. Then, a plurality of drive tires for loading and unloading in the front-rear direction are rotationally driven at the same speed in the same direction as the pallet unloading direction, so that the pallet loaded with the plurality of drive tires is used as the bed of the work bed. Is sequentially unloaded from one end in the front-rear direction, the pallet is unloaded from the loading platform, and is unloaded in order. When the pallet is unloaded, the rotational driving of the plurality of drive tires for loading and unloading in the front-rear direction is stopped.

When unloading a cargo in the left-right direction and carrying it out, a plurality of driving tires for carrying in and out in the left-right direction are provided with a large number of ball-shaped rotating bodies protruding at the same height on the loading platform. Are projected to the same height, and the upper surface of each driving tire is set in pressure contact with the lower surface of the pallet. Then, a plurality of driving tires for loading and unloading in the left-right direction are rotationally driven at the same speed in the same direction as the pallet unloading direction, so that the pallet loaded with the plurality of driving tires serves as a bed of the work bed. Is sequentially unloaded from one end in the left-right direction, the pallet is unloaded from the loading platform, and is unloaded in order. When the pallet is unloaded, the rotational driving of the plurality of driving tires for loading / unloading in the left-right direction is stopped.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a floor surface of the cargo handling section. Below the floor surface 1, a storage pit 3 having a doorway 2 is formed in a rectangular shape. A fixed base 5 formed in a rectangular shape is horizontally fixed to the bottom 4 of the storage pit 3, and the front, rear, left and right ends of the fixed base 5 are formed along the front, rear, left and right side walls 6 of the storage pit 3. A frame 7 is vertically erected and fixed, and an upper end portion of the pit frame 7 is formed substantially flush with the floor surface 1.

Next, a work bed 9 is provided above the fixed base 5 so as to be able to move up and down with respect to the doorway 2 via a lifting mechanism 8. The elevating mechanism 8 includes a lower cross link 10 disposed opposite to both sides, an upper cross link 11 disposed opposite to both sides axially attached to the lower cross links 10 on both sides, and these. It is composed of a hydraulic cylinder device 12 for vertically rotating the upper and lower cross links 10, 11. The lower cross links 10 on both sides are
It has a pair of links 10a, 10b arranged so as to cross each other on both sides, and a support shaft 13 rotatably rotatably supporting the intersection of the pair of links 10a, 10b on both sides. The lower ends of the pair of links 10a and 10b are rotatably attached to the base shaft 14 fixed to the upper portion of the fixed base 5 in a state where they are opened at a predetermined interval, and are relative to the inner side of both side parts. The link 10a located at the position is connected to both ends of the horizontal rod 15.

Further, the upper cross links 11 on both sides are provided.
Is a pair of links 11a, 11 which are arranged so as to intersect each other on both sides.
b and a pair of links 11a and 11b on both sides of the link 11a and 11b. The lower end of the pair of links 11a and 11b has a predetermined interval. The link 11a located on the inner side of the both sides is connected to the upper ends of the pair of links 10a and 10b on both sides so as to be rotatable. It is connected to both ends of the frame 18.

Further, as shown in FIG. 2, the hydraulic cylinder device 12 has a pair of hydraulic cylinders 19 arranged side by side, and the lower end of the main body of the pair of hydraulic cylinders 19 is a connecting frame. A base shaft 21 fixed to both side portions of 20 is rotatably attached to the base shaft 21, and the connecting frame 20 is fixed to an upper portion of the fixed base 5. Further, the tip end portions of the piston rods 22 of the pair of hydraulic cylinders 19 are rotatably attached to the support shafts 23 fixed to both side portions of the connecting frame 18. When the piston rods 22 of the pair of hydraulic cylinders 19 are expanded and contracted, the upper cross links 11 and the lower cross links 10 on both sides are expanded and contracted in the vertical direction, so that the work bed 9 is moved relative to the doorway 2. It is designed to be raised and lowered.

Next, the work bed 9 has a rectangular base frame 23 as shown in FIGS.
A plurality of connecting shafts 24 are fixed to the lower portions on both sides of the base frame 23, respectively.
The upper ends of the pair of links 11a and 11b on both sides are rotatably attached to the shaft. A plurality of columns 25 are vertically installed and fixed on the upper portion of the base frame 23 at predetermined intervals in the front-rear direction and the left-right direction, and a loading platform 26 is mounted on the upper ends of the columns 25. This loading platform 26
Are detachably connected to the upper ends of the columns 25 by spacers and bolts (not shown) inserted in the spacers.

The luggage carrier 26 has a luggage carrier frame 27 formed in the same rectangular shape as the base frame 23, and a luggage carrier plate 28 is horizontally fixed to the upper surface of the luggage carrier frame 27. Further, a pivot guide hole 29 is formed in the central portion of the load base plate 28 so as to penetrate in the vertical direction, and the pivot guide hole 29 and the load base plate 28 are formed on both sides of the load base plate 28 in the front-rear direction.
A plurality of tire guide holes 30 are formed in two rows and are located between the both ends of the load guide plate 28.
The pivot guide hole 29 and the loading base plate are provided on both left and right sides of the
A plurality of tire guide holes 31 are formed in two rows at a predetermined distance from both ends of the 28, and are located on a virtual circle locus centered on the center pivot guide hole 29. A plurality of tire guide holes 32 are formed in the plate 28 in a substantially annular shape at predetermined intervals, and a large number of rotating body guides are provided at predetermined intervals in the front-rear direction and the left-right direction of the luggage carrier plate 28. A hole 33 is formed.

Next, as shown in FIG. 6, a support frame 34 is erected and fixed on the upper surface plate 23a of the base frame 23 located immediately below the pivot guide hole 29, and the upper end of this support frame 34 is fixed. A tubular support 36 is fixed to the center of a horizontal support plate 35 formed in the central portion, and a slide shaft 38 is vertically slidably inserted into the support 36 via a sleeve 37. A pivot support 40 is fixed to a bearing body 39 rotatably attached to the upper end of the sliding shaft 38, and an elastic member such as rubber is provided in a support recess 41 at an upper portion of the pivot support 40. The lower part of the center pivot 42 formed in a cylindrical shape is fitted and fixed, and the upper surface of the center pivot 42 has a contact surface.
43 is formed. Further, the bearing body 39 is the sliding shaft.
An engagement plate 44 attached to the upper end of 38 prevents the stopper 38 from coming off. The upper part of the center pivot 42 projects in and out of the pivot guide hole 29 in the vertical direction.

In the vicinity of the lower end of the sliding shaft 38, a vertically long guide groove 45 is formed penetrating in the left-right direction, and the interlocking shaft 46 inserted in the guide groove 45 so as to be vertically movable. The upper ends of the opposite side plates 48 of the connecting fitting 47 formed in a substantially U-shape are axially attached to both ends, and the upper end of the piston rod 51 of the hydraulic cylinder device 50 is attached to the bottom plate 49 of the connecting fitting 47. The hydraulic cylinder device 50 is connected and fixed on the upper plate 23a of the base frame 23. A mounting bracket 52 is fixed to the lower end of the sliding shaft 38, and the mounting brackets 53 on both sides of the mounting bracket 52 are projected to the lower portions of both sides of the mounting bracket 52 and the supporting plate 35 of the supporting frame 34. Mounting pieces on both sides
Springs 55 for urging the sliding shaft 38 upward are respectively stretched between the springs 54 and 54.

Further, a sensor 56 for detecting the upper limit position of the center pivot 42 and a sensor 57 for detecting the lower limit position of the center pivot 42 are provided on both sides of the hydraulic cylinder device 50. The center pivot 42 is always the hydraulic cylinder device.
50 piston rods 51 allow the springs 55 on both sides to
It is supported so as to be positioned below the pivot guide hole 29 via the sliding shaft 38 that is lowered against the above.

Next, directly below the tire guide holes 30 formed in two rows on both sides in the front-rear direction of the load base plate 28, there are a plurality of forward / reverse-movable drives for loading and unloading cargo in the front-rear direction. Tires 58 are provided so as to be retractable from each tire guide hole 30.

A plurality of forward and reverse drive tires for loading and unloading cargo in the left and right directions are provided directly below the plurality of tire guide holes 31 formed in two rows on both sides in the left and right direction of the cargo bed plate 28. 59 are provided so as to be retractable from each tire guide hole 31.

Directly below the tire guide holes 32, which are formed in a substantially annular shape around the pivot guide hole 29 in the load carrier plate 28, are a plurality of forward / reverse rotatable wheels for rotating and changing the direction of the cargo. Driving tire 60 has its own tire guide hole
It is provided so that it can appear and disappear with respect to 32.

The plurality of driving tires 58 arranged in the front-rear direction, the plurality of driving tires 59 arranged in the left-right direction, and the plurality of driving tires 60 arranged in an annular shape respectively handle cargo. Although the installation direction is set according to the direction in which it is installed, these drive tires 58, 59, 60 and the structure for driving them are common, so these structures will be described below with reference to FIGS. 7 and 8. It will be explained based on. That is, the tire guide holes 30, the tire guide holes 31, and the tire guide holes 32 at positions displaced from positions corresponding to the respective positions directly below the upper surface plate 23a of the base plate 23 relative to each other. The pillars 61 are vertically installed and fixed.
Are formed, and a disc-shaped movable body 63 is vertically movably engaged between the guides 62 facing each other on both sides.

A rotary shaft 65 is rotatably mounted on the movable body 63 in a horizontal state via a bearing body 64. One end of the rotary shaft 65 has the tire guide holes 30,
Located directly below 31, 32, the respective drive tires 58,
59 and 60 are fixedly mounted on a shaft, and a reduction gear 66 is fixed to a portion near one end of the rotary shaft 65. In addition, the movable body 63
A rotary shaft 68 is rotatably mounted in a lower part of the rotary shaft 68 in a horizontal state and in a parallel state with the rotary shaft 65 through a bearing body 67. One end of the rotary shaft 68 meshes with the reduction gear 66. The interlocking gear 69 is fixedly attached, and the output shaft 71 of a forward / reverse rotatable hydraulic motor 70 fixed to the lower side surface of the movable body 63 is connected to the other end of the rotary shaft 68. In addition, the movable body 63
The upper end of the cover covers the upper part of the reduction gear 66.
72 is stuck.

Further, a cutout recess 73 is formed in the middle of the lower end of the movable body 63, and the connecting shaft 74 fixed to the lower end of the movable body 63 across the cutout recess 73 has the cutout recess 73.
Located in the hydraulic cylinder device 75 piston rod 76
The upper ends of the base plate 23 are connected to each other, and the hydraulic cylinder device 75 is located between the columns 61 on both sides.
It is fixed on the top plate 23a. In addition, the respective driving tires 5 are provided on both sides of the hydraulic cylinder device 75.
A sensor 77 for detecting the ascending limit position of 8, 59, 60 and a sensor 78 for detecting the ascending limit position of the respective driving tires 58, 59, 60 are provided. The driving tires 58, 59, 60 are formed in the loading base plate 28 via the movable body 63 by expansion and contraction of the piston rod 51 of the hydraulic cylinder device 50.
It is supposed to appear and disappear for 30, 31, and 32.

However, the driving tires 58 arranged in two rows in the front-rear direction of the load carrier plate 28 have their respective tire guide holes 30 by the simultaneous operation of the respective hydraulic cylinder devices 75.
On the other hand, it is set so that the hydraulic motors 70 appear and disappear at the same level at the same time, and the hydraulic motors 70 are simultaneously driven to rotate in the forward rotation direction and the reverse rotation direction at the same time. In addition, 2 in the left-right direction of the loading plate 28
Each of the driving tires 59 arranged in the row has its respective tire guide hole formed by the simultaneous operation of the respective hydraulic cylinder devices 75.
It is set so as to appear and disappear at the same level with respect to 31 at the same time, and is set so as to be simultaneously driven to rotate in the forward rotation direction and the reverse rotation direction by the simultaneous operation of the respective hydraulic motors 70. Further, the respective driving tires 60 annularly arranged on the loading base plate 28 are set so that they are simultaneously projected and retracted in the respective tire guide holes 30 at the same level by the simultaneous operation of the respective hydraulic cylinder devices 75. Further, the hydraulic motors 70 are simultaneously driven to rotate in the forward rotation direction and the reverse rotation direction at the same time.

Next, as shown in FIGS. 5, 9 and 10, the upper plate 23a of the base plate 23 is provided with a plurality of hollow cylindrical supports 79 at predetermined intervals in the front-rear direction and the left-right direction. The guide rod 81 is vertically erected and fixed, and the guide rod 81 is vertically slidably inserted into each support 79 at each position through a sleeve 80, and the upper end portion of each guide rod 81 is vertically slidable. The connecting plate 83 of the rotor support frame 82 is attached to the guide rod.
It is fixed to the upper end of 81 with a locking plate 83a and a bolt 83b screwed. In addition, the top plate 23 of the base plate 23
Hydraulic cylinder devices 84 are fixed to a at positions close to the respective supports 79. Further, a horizontal shaft rod 86 integral with the connecting plate 83 to which the upper end portion of each guide rod 81 is fixed is connected to the upper end portion of the vertical piston rod 85 of each hydraulic cylinder device 84. Further, on both sides of the hydraulic cylinder device 84, a plurality of ball-shaped rotating bodies, which will be described later, are attached to sensors 87 for detecting a rising limit position where they are raised with respect to the plurality of rotating body guide holes 33 of the load base plate 28, and respective sensors 87. A sensor 88 for detecting the lower limit position of the ball is provided.

The rotating body supporting frame 82 has a rectangular outer frame 89 and a large number of long frames extending in the front-rear direction, which are arranged side by side at predetermined intervals in the left-right direction between the front and rear portions of the outer frame 89. The vertical frame 90 and a large number of horizontal frames 91, which are long in the left-right direction and are arranged in parallel in the front-rear direction at predetermined intervals between the left-right portions of the outer frame 89, are formed in a grid shape as a whole. In addition, each of the supports 79
Also, at the position corresponding to each hydraulic cylinder device 84, the connecting plate 83 is attached to the vertical frame 90 and the horizontal frame 91.
Are fixed horizontally. Then, the columns 61 on both sides supporting the two driving tires 58 in the front-rear direction,
The supporting columns 61 on both sides that support the two rows of the driving tires 59 in the left-right direction, the supporting columns 61 on both sides that support the annularly arranged driving tires 60, and the support frame 34 that supports the center pivot 42, The rotary body support frame 82 is disposed at respective positions between the vertical frames 90 and the horizontal frames 91, and the rotary body support frame 82 as a whole is not affected by the columns 61 and the support frame 34. The piston rod 85 of each of the hydraulic cylinder devices 84 is vertically moved in a horizontal state.

In addition, a pair of supporting members are provided above the vertical frames 90 and the horizontal frames 91 of the rotating body supporting frame 82, directly below the plurality of rotating body guide holes 33 formed in the carrier plate 28. The pieces 92 are vertically erected and fixed to face each other with a space therebetween, and a ball-shaped rotating body 94 is rotatably mounted between the bearings 93 at the upper ends of the pair of support pieces 92. The shaft 95 is horizontally mounted. The pair of support pieces 92 are connected by a supporting plate 96. Then, the plurality of ball-shaped rotating bodies 94 are simultaneously projected and retracted at the same level with respect to the respective rotating body guide holes 33 through the rotating body supporting frame 82 by the simultaneous operation of the respective hydraulic cylinder devices 84. Is set.

Thus, the large number of ball-shaped rotating members 94
As shown in FIG. 11, has a rotary base body 97 in which two disk bodies 97a and 97b rotatably mounted on the rotary shaft 95 are axially coupled to each other. In the body 97a, three mounting recesses 98 are formed in the outer peripheral portion at equal intervals, and the rollers 99 are respectively rotatable in the mounting recesses 98 in a direction orthogonal to the rotating shaft 95. Three mounting recesses 100 are formed between the mounting recesses 98. Further, on the other disk body 97b of the rotary base 97, three mounting recesses 101 are formed in the outer peripheral portion at positions facing the respective recesses 100 at equal intervals. The rollers 102 are rotatably mounted in a direction orthogonal to the rotary shaft 95, and three recesses 103 are formed between the mounting recesses 101 at positions facing the rollers 99. ing. Then, a rotary base body in which three rollers 99 and 102 are rotatably arranged on both sides so that their phases are shifted from each other.
97 is formed into a ball shape as a whole. And
The ball-shaped rotating body 94 is rotatable in the front-rear direction of rotation about the rotation shaft 95 and in the left-right direction of rotation in a direction orthogonal to the rotation shaft 95, and directs the cargo in the front-rear direction and the left-right direction. Can be carried in and out.

Next, on the bed plate 28 of the bed 26, stopper guide holes 104 are formed vertically penetrating both sides of the front edge portion and both sides of the trailing edge portion thereof, respectively. The stopper guide holes 105 are formed penetrating in the vertical direction on both sides of the one side edge vicinity part in one direction and on both sides of the other side edge vicinity part, and further, the both sides formed in the other side edge vicinity part. Inside the stopper guide hole 105, stopper guide holes 106 are formed penetrating in the vertical direction on both sides separated by a predetermined distance.

Further, the stopper guide holes 10 on both sides of the front edge are provided.
A front stopper 107 is vertically movable for 4 and a rear stopper 108 is vertically movable for stopper guiding holes 104 on both sides of the rear edge. A right side stopper 109 is vertically movable with respect to the hole 105, and a left side stopper 110 is provided with respect to the stopper guide holes 105 on both sides of the other side edge.
Is provided so as to be vertically movable, and an inner stopper 111 is provided for vertically moving with respect to the stopper guide holes 106 on both sides of the inner portion.

The front side stopper 107 and the rear side stopper
108, the right side stopper 109, the left side stopper 110, and the inner side stopper 111 are set in directions and positions to be installed in accordance with the direction in which the cargo is supported and the size of the pallet on which the cargo is loaded, respectively. Ten
Since 7, 108, 109, 110, 111 and the structure for moving them up and down are common, these structures will be described below with reference to FIGS. 12 and 13. That is, the upper surface plate 23 of the base plate 23 is located at a position directly below each of the stopper guide holes 104, 105, 106.
a Guide rails with U-shaped cross section on both sides
The guide rails 112 on both sides of the guide rails 112 are vertically erected and fixed to each other with a space therebetween, and the upper ends of the guide rails 112 are supported by contacting the lower edge portions of the stopper guide holes 104, 105, 106, respectively. .. Further, vertically long guide grooves 114 are formed in the lower side portions of the side plates 113 on one side of the guide rails 112 on both sides, and projecting pieces 115 are integrally fixed to the upper ends of the side plates 113 on both sides. Has been done.

The stoppers 107, 108, 109, 110, 111 are vertically movably engaged between the guide rails 112 on both sides, and the stoppers 107, 108, 108,
Vertically long guide groove in the lower middle part of 109, 110, 111
116 are formed, and these stoppers 107, 108, 109,
Connecting pins 117 projecting from both sides of the lower ends of 110 and 111 are vertically movably inserted into the guide grooves 114 on both sides, and between the connecting pins 117 on both sides and the projecting pieces 115 on both sides, A spring 118 is stretched to constantly urge the stoppers 107, 108, 109, 110, 111 upward. Further, a hydraulic cylinder device 119 is fixed on the upper plate 23a of the base plate 23 located between the guide rails 112 on both sides, and an interlocking shaft 121 fixed to a tip end portion of a piston rod 120 of the hydraulic cylinder device 119 is fixed. The guide groove 116 is vertically movably inserted.

The piston rod 120 of the hydraulic cylinder device 119 resists the springs 118 on both sides via the interlocking shaft 121 to prevent the respective stoppers 107, 108, 109.
, 110, 111 are always stopper guide holes 104
, 105, and 106 are set so that they do not project above. Further, on both sides of the hydraulic cylinder device 119, a sensor 122 for detecting the upper limit position of the stoppers 107, 108, 109, 110, 111 and a sensor 123 for detecting the lower limit position of the stoppers 107, 108, 109, 110, 111 are provided.

Next, as shown in FIG. 1 and FIG. 14, a locking body 124 is provided on the upper portions of both sides of the pit frame 7 facing each other.
Are fixed together, and the locking bodies 124 on both sides of the locking holes 125 are opened at the same level in opposite directions.
Are formed. Further, plate-like supporting frames 126 are vertically fixed integrally to the lower ends of the four corners of the base frame 23, respectively.
6 That is, the plate-like support frames 126 on both sides at positions corresponding to the locking bodies 124 on both sides are formed with guide holes 127 at their upper ends, which face the locking holes 125 of the locking bodies 124 on both sides. The guide holes 12 are provided on the inner side of the upper ends of the plate-like support frames 126 on both sides.
Guide supporting bodies 129 having communication holes 128 communicating with 7 are fixed horizontally.

A hydraulic cylinder device 130 is fixed to the inner end portion of each of the guide supports 129, and a lock pin 132 fixed to the tip end portion of the piston rod 131 of each hydraulic cylinder device 130 is provided in each of the guide supports. Communication hole 128 in body 129
It is inserted through a sleeve 133 so that it can move back and forth.
The tip of each of the lock pins 132 is attached to the loading platform by the piston rod 131 of the hydraulic cylinder device 130.
When the 26 is lowered into place, the locking holes 125 on both sides are
It is adapted to be engaged and disengaged inside.

Further, on the lower side of the plate-like support frame 126 at the four corners of the base frame 23, guide rollers 134 that engage with the four corners of the pit frame 7 when the loading platform 26 moves up and down.
Is rotatably mounted on the shaft.

Next, as shown in FIGS. 2, 5 and 16, a device storage pit 135 continuous with the storage pit 3 is provided on the left side of the loading platform 26, that is, on the left side of the storage pit 3. The device storage pits 135 are formed vertically, and columns 136 are vertically erected and fixed to the front, rear, left, and right parts of the device storage pit 135, and a plurality of floor beams 137 are horizontally arranged between the upper ends of the columns 136. It is fixed, and the columns before and after this 136
A contact frame is attached to the lower surface of the beam member 138 in the front-rear direction, and the connecting frame in the front-rear direction is provided between the inner front-rear columns 136.
139 is fixed horizontally. A connecting frame 140 is fixed between the upper ends of the pit frames 7 located on the left side of the storage pit 3 in parallel with the connecting frame 139 and at the same level. A large number of support frames 141 are horizontally fixed to each other at predetermined intervals in the front-rear direction.

Support legs 142 having the same height as the beam body 138 are erected and fixed on a plurality of support frames 141 at predetermined positions in the front-rear direction among the plurality of support frames 141. A floor plate 143 having the same length as the front-rear direction of the loading base plate 28 is horizontally fixed to the upper end of the beam body 138 and the right end of the floor plate 143 in the width direction. The portion 143a is formed in such a size that it does not protrude from the inner end of the connecting frame 140 of the pit frame 7. Slide bearings 144 are fixed to the left and right portions of the support frames 141 at predetermined positions in the front and rear portions of the plurality of support frames 141. A slide base formed between the floor plate 143 and the plurality of support frames 141 has substantially the same shape as the floor plate 143.
The slide base 145 is provided with a plurality of sliders 146, which are slidably engaged in the left and right directions with the slide bearings 144 at the respective positions, on the front and rear sides of the lower surface of the slide base 145. A touch sensor 147 for detecting the advance position of the slide base 145 is attached to the.

Further, brackets 148 are fixed to the support frames 141 located between the support frames 141 having the slide bearings 144, and hydraulic cylinder devices 149 are fixed to the respective brackets 148 in the left-right direction. At the tip of the piston rod 150 protruding rightward of each hydraulic cylinder device 149, the lower end of a vertical interlocking piece 151 integrally projected downward from the lower surface of the front and rear of the slide base 145. Is rotatably supported by a support shaft 152. In addition, in the equipment storage pit 135, each of the hydraulic cylinder devices 12, 50, 75, 8 is installed.
4, 119, 130, 149 and a hydraulic drive device 153 for controlling the hydraulic motor 70, respectively, are housed, and the upper surface of the floor beam body 137 above the equipment storage pit 135 is flush with the floor plate 143. The floor board 154 is fixed, and this floor board 154 is fixed.
A lid 155 is openably and closably provided on the.

Further, at the front end portion of the luggage carrier 26, the luggage carrier plate 28 is provided.
A conveyor 156 for loading and unloading cargo is installed in a row.
A guide roller 157 is rotatably provided between the conveyor 156 and the loading plate 28. Further, stoppers 158 for supporting the base frame 23 of the work bed 9 at the lower limit position of lowering of the work bed 9 are vertically provided on both sides of the fixed base 5 fixed to the bottom of the storage pit 3 so as to face each other. It is fixed upright.

Next, the operation of the above embodiment will be described.

First, when a forklift is loaded on the loading platform 26 of the work bed 9 to carry in cargo, the hydraulic cylinder device 12 of the lifting mechanism 8 provided on the fixed base 5 is operated to extend and retract the piston rod 22. The lower cross link 10 and the upper cross link 11 of the lifting mechanism 8 are vertically expanded and contracted about the respective support shafts 13, 16, 17 and the base shaft 14, and the base shaft 14 is attached to the upper end portion of the upper cross link 11. The work bed 9 supported by the work bed 9 is moved up and down, the bed plate 28 of the bed 26 of the work bed 9 is adjusted and set to a position substantially at the same level as the floor surface 1 and the floor plate 143, and the hydraulic cylinder device 12 operates. Is stopped, and the set position of the work bed 9 is supported by this hydraulic cylinder device 12.

Further, the loading base plate 28 is adjusted and set at substantially the same level as the floor surface 1 and the floor plate 143, and the work bed 9 is located at a position facing the locking holes 125 of the locking bodies 124 on both sides of the pit frame 7. The lock pins 132 provided on the lower portions of both sides of the base frame 23 are set in position. And the base frame
When the hydraulic cylinder device 130 at the bottom of both sides of 23 is operated to extend the piston rod 131, the tips of the lock pins 132 connected to the piston rods 131 on both sides are inserted into the locking holes 125 on both sides. Lock pin 13
The work bed 9 is supported by 2 to prevent the work bed 9 from rolling sideways with the pit frame 7. Therefore, the work bed 9 is stably supported by the lock pins 132 and the elevating mechanism 8 on both sides.

When a plurality of hydraulic cylinder devices 84 provided on the upper surface plate 23a of the base frame 23 are operated to contract the respective piston rods 85, the rotary member support frame
The guide rods 81 of 82 are slid down along the respective supports 79 via the sleeve 80, and the rotor support frame 82 is lowered in a stable state. The rotating body 94 is lowered from each of the rotating body guide holes 33 of the load base plate 28, and each ball-shaped rotating body 94 is set to be lowered to a position lower than the upper surface of the load base plate 28,
The operation of the plurality of hydraulic cylinder devices 84 is stopped. Also,
A plurality of hydraulic cylinder devices 75 provided on the top plate 23a of the base frame 23 are operated to operate the respective piston rods 76.
When retracted, guide the posts 61 on both sides in their respective positions.
Each movable body 63 is slid down along 62, and a plurality of drive tires 58 for carrying in and out the front and rear direction of each movable body 63, a plurality of drive tires 59 for carrying in and out in the left and right direction, and a plurality of direction changing tires. Driving tire 60 of each of the tire guide holes 30, 31,
The drive tires 58, 59, 60 are lowered from 32,
It is set to a position lower than the upper surface of 28 and the operations of the plurality of hydraulic cylinder devices 75 are stopped.

Further, when the hydraulic cylinder device 50 provided on the upper surface plate 23a of the base frame 23 is operated and the piston rod 51 is contracted, the interlocking shaft 46 is engaged with the lower end portion of the guide groove 45 of the sliding shaft 38. In this state, the sliding shaft 38 is slid down against the springs 55 on both sides along the sleeve 37 of the support cylinder 36, and the center pivot 42 at the upper end of the sliding shaft 38 is pivotally guided.
29, the center pivot 42 is set to a position lower than the upper surface of the load carrier plate 28, and the operation of the hydraulic cylinder device 50 is stopped. Further, when the hydraulic cylinder devices 119 of the front, rear, left and right stoppers 107, 108, 109, 110, 111 are respectively actuated to contract the respective piston rods 120, the interlocking shaft 121 causes the stoppers 107 to move.
, 108, 109, 110, 111 engaged with the lower ends of the guide grooves 116 of the stoppers 107, 108, 109, 110, 11 respectively.
1 is slid down along the guide rail 112 against the springs 118 on both sides, and these stoppers 107, 108, 10
The stopper guide holes are at the tips of 9, 110, and 111.
It is lowered from 104, 105, 106 and set to a position lower than the upper surface of the bed plate 28, and the operation of each hydraulic cylinder device 119 is stopped.

Therefore, a plurality of driving tires 58 for carrying in and out in the front-rear direction, a plurality of driving tires 59 for carrying in and out in the left and right directions,
All of the driving tires 60 for direction change, the center pivot 42, and the stoppers 107, 108, 109, 110, 111 are all set lower than the upper surface of the load carrier plate 28. And
A forklift supporting a pallet on which cargo is loaded is supported by a forklift from the floor surface 1 or the floor plate 143 onto the load base plate 28. By moving the forklift on the load base plate 28, the forklift lifts the load base plate 28 onto the load base plate 28. Freight is easily loaded into the. As described above, in the case of a relatively small cargo supported by the forks of the forklift, the forklift is directly loaded onto the loading base plate 28, and the cargo is sequentially loaded onto the entire surface of the loading base plate 28 by the forklift, and Freight is neatly loaded on the board 28.

Next, when the pallet P is loaded from the front-rear direction on the loading platform 26 of the work bed 9 and the cargo is loaded on the pallet P, each hydraulic cylinder device 84 is operated to operate each piston rod 85. Is extended, the rotating body support frame 82 is raised in a horizontal state by the guide action of the guide rods 81 that are slid up along the support bodies 79 by the piston rods 85. The respective ball-shaped rotating bodies 94 are projected upward from the respective rotating body guide holes 33 of the loading base plate 28 at the same height, and the operation of each hydraulic cylinder device 84 is stopped, and each hydraulic cylinder device 84 is stopped. Holds the projecting state of each ball-shaped rotating body 94 via the rotating body supporting frame 82.

Further, when the hydraulic cylinder devices 75 of the plurality of two-row driving tires 58 for carrying in and out in the front-rear direction are operated to extend the respective piston rods 76, the movable bodies 63 are moved by the respective piston rods 76. The driving tires 58 of the two rows for carrying in and out of the movable body 63 in the front-rear direction are lifted up along the guides 62 of the columns 61 on both sides, and are at the same height above the respective tire guide holes 30 of the bed plate 28. Is projected to
At the same time, the upper surface of each driving tire 58 is projected to a position slightly higher than the upper surfaces of the plurality of ball-shaped rotating bodies 94, and the operation of each hydraulic cylinder device 75 is stopped. Holds the protruding state of each driving tire 58.

Further, each hydraulic cylinder device 75 of the plurality of driving tires 59 for carrying in and out in the left and right direction, each hydraulic cylinder device 75 of the plurality of driving tires 60 for changing the direction, and the center pivot.
42 hydraulic cylinder devices 50 and respective hydraulic cylinder devices of stoppers 107, 110 and 111 excluding hydraulic cylinder devices 119 of rear side stopper 108 and right side stopper 109 on both sides.
Actuating each of 119, each piston rod 76,
When 51 and 120 are contracted, each driving tire 59 for loading and unloading in the left and right direction, each driving tire 60 for changing direction, and the center pivot 42
Also, all of the stoppers 107, 110, 111 are set lower than the upper surface of the load carrier plate 28, and the operation of the hydraulic cylinder devices 75, 50, 119 is stopped at these set positions.

Further, depending on the height of the carrying-out end of the conveyor 156, the lock pins 132 on both sides are engaged with the locking holes 125 of the locking bodies 124 on both sides to lock the base plate 23, or Or unlock this lock. To unlock the base plate 23, operate the hydraulic cylinder devices 130 on both sides to
When the 131 is retracted, the lock pin 132 on each tip
Are slid back along the sleeves 133 of the respective guide supports 129, the tip ends of the lock pins 132 on both sides are disengaged from the locking holes 125 on both sides, and the base plate 23 is unlocked. Then, the elevating mechanism 8 on the fixed base 5 is operated, and the work bed 9 is raised and lowered by the elevating mechanism 8, and a plurality of two beds for loading and unloading the loading plate 28 of the work bed 9 in the front-rear direction are loaded.
Each driving tire 58 of the row is set at a predetermined height position for loading the pallet P.

Each driving tire for loading and unloading in the front-rear direction
When each output shaft 68 is rotated in one of the forward and reverse directions by operating each hydraulic motor 70 of 58, each output shaft 68 is rotated.
The rotary shafts 65 are decelerated and rotated through the interlocking gears of the interlocking gears 69 of 68 and the reduction gears 66, and the driving tires 58 for carrying in and out of the rotary shafts 65 in the front-rear direction are loaded at the same speed and in the same direction. The pallet P is rotated in the forward direction of loading the pallet P onto the 28. When the hydraulic cylinder devices 119 of the rear stopper 108 and the right stopper 109 on both sides are operated to extend the piston rods 120, the extended springs 118 on both sides are contracted in the restoring direction and The springs 118 on both sides allow the stopper 108 on the rear side on both sides and the stopper 109 on the right side.
Are raised along the guide rails 112 on both sides thereof, and the stoppers 108, 109 are projected upward from the stopper guide holes 104, 105 of the load carrier plate 28, respectively, and the tips of the stoppers 108, 109 are set to the above-mentioned positions. The pallet P is projected above the upper surface of each of the front and rear driving tires 58 for engaging the pallet P, and the operation of each hydraulic cylinder device 119 is stopped.

Next, when the pallet P is carried in from the carriage 159 to the carry-in portion of the conveyor 156, the pallet P is carried by the conveyor 156 and, at the same time, from the carry-out end through the guide rollers 157 to the loading base plate 28. When the pallet P is loaded into the front end portion, the pallet P is sequentially transported toward the rear end side of the load carrier plate 28 by the plurality of two-row driving tires 58 for loading and unloading in the front-rear direction, and the pallet P is also transported. The right side of P is guided by the right side stoppers 109 on both sides and sequentially conveyed,
When the front end of the pallet P in the loading direction comes into contact with the rear stoppers 108 on both sides, the operation of each hydraulic motor 70 is stopped, and the two rows of driving tires 58 for loading and unloading in the front-rear direction are rotationally driven. Stop.

Further, the hydraulic cylinder devices 119 of the front stoppers 107 on both sides are actuated to raise the front stoppers 107 on both sides by the respective piston rods 120 to a position where they come into contact with the rear end portion of the pallet P. Also, depending on the size of the pallet P, left side stoppers on both sides
110 or inner stopper 111 each hydraulic cylinder device
119 are operated to raise the left stoppers 110 or the inner stoppers 111 on both sides by the respective piston rods 120 to a position where they abut on the left side portion of the pallet P. Then, the operation of each hydraulic cylinder device 119 of the front side stopper 107, the left side stopper 110 or the inner side stopper 111 on both sides is stopped, and each hydraulic cylinder device 11 is stopped.
At 9, the stoppers 107, 110, and 111 hold the protruding state. Therefore, the pallet P is positioned in the front-rear direction and the left-right direction by the front side stoppers 107, the rear side stoppers 108, the right side stoppers 109, and the left side stoppers 110 or the inner side stoppers 111 on both sides, and is carried in and carried on the bed plate 28 in an orderly manner. Further, it is supported by the two rows of the respective driving tires 58 for loading and unloading in the front-rear direction and a large number of ball-shaped rotating bodies 94. Then, the cargo is loaded onto the pallet P.

Next, when the pallet P is loaded on the loading platform 26 of the work bed 9 from the left-right direction and the cargo is loaded on the pallet P, as in the case of loading from the front-back direction, the loading platform plate 28 is used. With a large number of ball-shaped rotating bodies 94 projecting upward at the same height, the two rows of driving tires 59 for loading and unloading in the left-right direction are projected at the same height, and the upper surface of each driving tire 59 is It is set at a position slightly higher than the upper surfaces of the plurality of ball-shaped rotating bodies 94. That is, when each hydraulic cylinder device 75 of each of the two rows of the driving tires 59 for loading / unloading in the left / right direction is operated to extend the piston rod 76, the driving tires 58 for loading / unloading in the front-rear direction are raised. Similarly, the two rows of the driving tires 59 for carrying in and out in the left and right direction are projected upward from the respective tire guide holes 31 to the same height, and the upper surfaces of the driving tires 59 have the above-mentioned ball-like shapes. While being projected to a position slightly higher than the upper surface of the rotating body 94, the operation of each hydraulic cylinder device 75 is stopped, and the projecting state of each driving tire 59 for loading and unloading in the respective left and right directions in each hydraulic cylinder device 75. Hold.

Further, each of the two rows of the driving tires 58 for carrying in and out in the front-rear direction, the plurality of driving tires 60 for changing the direction, the center pivot 42, the left side stoppers 110 on both sides and the inner stoppers 111 on both sides are respectively attached to the loading base plate 28. Set lower than the upper surface of. Further, depending on the height of the carry-out end portion of the conveyor 156, the lock pins 132 on both sides are engaged with the locking holes 125 of the locking bodies 124 on both sides to lock the base plate 23, or unlock. In order to unlock the base plate 23, the hydraulic cylinder devices 130 on both sides are actuated to retract the piston rods 131, and the lock pins 13 at the tips of the pistons are locked.
2 are slid backward along the sleeves 133 of the respective guide supports 129, the tips of the lock pins 132 on both sides are disengaged from the locking holes 125 on both sides, and the base plate 23 is unlocked. Then, the elevating mechanism 8 on the fixed base 5 is operated, and the work bed 9 is elevated and lowered by the elevating mechanism 8 so that the two rows of the driving tires 59 for carrying in and out the load base plate 28 of the work bed 9 in the left-right direction are moved. Each of them is set to a predetermined height position for loading the pallet P.

Then, the hydraulic motors 70 of the driving tires 59 in the two rows for carrying in and out in the left and right directions are operated to output the respective output shafts 68.
Is rotated in one direction of the forward and reverse directions, the respective rotary shafts 65 are decelerated and rotated via the interlocking gears 69 and the reduction gears 66 of the respective output shafts 68, and the left and right directions of the respective rotary shafts 65 are rotated. The driving tires 59 for loading and unloading are rotated in the forward direction of loading and unloading the pallet P onto the bed plate 28 at the same speed and in the same direction. Also, front stoppers 107 on both sides
When the hydraulic cylinder devices 119 of the rear stopper 108 and the right stopper 109 are operated to extend the respective piston rods 120, the extended springs 118 on both sides are contracted in the restoring direction and the springs on both sides are contracted. 118 by the front stoppers 107 on both sides,
The stopper 108 on the rear side and the stopper 109 on the right side are raised along the guide rails 112 on both sides thereof, and the stoppers 107, 108, 109 are projected upward from the stopper guide holes 104, 105 of the load carrier plate 28, respectively. The tip of each of the stoppers 107, 108, 109 is located above the upper surface of each of the driving tires 59 for loading and unloading in the left-right direction, and the pallet P is
And the operation of each hydraulic cylinder device 75, 119 is stopped.

Next, the pallet P is attached to the left end of the bed plate 28.
When the pallet P is loaded, the pallet P is sequentially transported toward the right end side of the luggage carrier plate 28 by the two rows of the driving tires 59 for loading and unloading in the left and right directions, and the front and rear ends of the pallet P are on both sides. Of the pallet P are guided and sequentially conveyed by the front side stopper 107 and the rear side stopper 108, and the operation of each hydraulic motor 70 is stopped when the front end of the pallet P in the loading direction comes into contact with the right side stoppers 109 on both sides. 2 for carrying in and out
The rotational drive of each driving tire 59 in the row is stopped.

Further, depending on the size of the pallet P, the hydraulic cylinder devices 119 of the left side stopper 110 or the inner side stopper 111 on both sides are actuated to move the left side stopper 110 or the inner side stopper 111 on either side by the respective piston rods 120. To the position where it abuts the left end of the. And the front stoppers on both sides
107, the right side stopper 109 and the left side stopper 110 or the inner side stopper 111 stop the operation of each hydraulic cylinder device 119, and each hydraulic cylinder device 119 keeps the protruding state of each stopper 107, 110, 111.

Therefore, the pallet P has a front stopper 107, a rear stopper 108, and a right stopper 109 on both sides.
And left side stopper 110 or inner side stopper 1 on both sides
Positioned from the front and back and left and right at 11
It is loaded and held in order on 28, and is supported by two rows of driving tires 58 for loading and unloading in the left-right direction and a large number of ball-shaped rotating bodies 94. Then, the cargo is loaded onto the pallet P.

Next, when carrying cargo for aviation on the pallet P carried on the bed plate 28 of the work bed 9 and stacking the cargo, for example, a fork of a forklift is carried on the pallet P. Cargo is sequentially loaded and piled up by means. When the cargo is carried into the pallet P, if it is difficult to carry the cargo onto the entire surface of the pallet P due to the carrying-in means and the working condition and the cargo is carried to one side of the pallet P, the cargo is loaded and unloaded in the front-rear direction. Each row of driving tires 58, two rows of driving tires 59 for loading and unloading in the left-right direction
And front, rear, left and right stoppers 107, 108, 109, 110,
All 111 are set to a position lower than the upper surface of the carrier plate 28, and a pallet P carrying the cargo is supported by a large number of ball-shaped rotating bodies 94.

When the hydraulic cylinder device 50 of the center pivot 42 is operated to extend the piston rod 51, the springs 55 on both sides extended by the piston rod 51 are extended.
Is contracted upward in the restoring direction, and the sliding shaft 38 is slid upward along the sleeve 37 in the support cylinder 36 by the springs 55 on both sides of the sliding shaft 38 so that the upper end of the sliding shaft 38 is rotatable. The center pivot 42 is projected upward from the pivot guide hole 29, the contact surface 43 of the upper surface of the center pivot 42 is pressed against the lower surface of the pallet P, and the operation of the hydraulic cylinder device 50 is stopped. Further, when the hydraulic cylinder devices 75 of the driving tires 60 for direction change are operated to extend the respective piston rods 76, the movable bodies 63 are guided by the respective piston rods 76 and are raised by the guides 62 on both sides. Then, a plurality of drive tires 60 for changing the direction of each movable body 63 are projected upward from the respective tire guide holes 32 of the load base plate 28, and the upper surface portion of each drive tire 60 for changing the direction of the pallet P is Pressed against the lower surface.

Further, when the hydraulic motors 70 of the driving tires 60 for direction change are operated to rotate the respective output shafts 68 in one of the forward and reverse directions, the interlocking gears 69 and 69 of the respective output shafts 68 are rotated. The respective rotary shafts 65 are decelerated and rotated through the meshing engagement of the reduction gears 66, and the driving tires 60 for changing the direction of the respective rotary shafts 65 are directed at the same speed and in the same direction to change the direction of the pallet P. The pallet P is rotatably driven, and the pallet P is rotated about the center pivot 42 by the plurality of driving tires 60, and the other side on which the cargo cannot be carried on the pallet P is changed in direction to a position where the cargo can be carried. At this time, the center pivot 42 moves the sliding shaft 38 through the bearing body 39.
Since the pallet P is rotatably attached around the center of the pallet P, the pallet P is rotated following the rotation for changing the direction, and the center pivot 42 prevents the pallet P from being displaced. Then, the cargo can be sequentially loaded again on the pallet P by the carrying-in means and stacked, and the cargo can be stacked orderly on the pallet P without being biased.

Next, when the cargoes are piled high on the pallet P of the work bed 9 and it is difficult to further stack the cargoes on these pallets P, the hydraulic cylinder of the lifting mechanism 8 on the fixed base 5 is used. When the device 12 is operated and the piston rod 22 of the hydraulic cylinder device 12 is contracted, the lower cross link 10 and the upper cross link 11 are rotated and lowered, and the work bed 9 on the upper cross link 11 moves to the pit frame 7. The loading base plate of the loading platform 26 is guided by the front, rear, left, and right guide rollers 134 engaged with the front, rear, left, and right portions and lowered.
28 is lowered to a position lower than the floor surface 1 and the entrance / exit 2 of the floor plate 143, and the upper surface portion of the cargo piled on the pallet P of the cargo bed plate 28 is set to the height position where the next cargo is easily piled up. At the same time, the operation of this hydraulic cylinder device 12 is stopped.

Then, on the cargo carried on the pallet P, the cargo is carried in again by the carrying-in means and piled up. Then, when the cargoes are piled high on the pallet P and it is difficult to further stack the cargoes on these cargos, the hydraulic cylinder device 12 is again operated as described above,
The piston rod 22 is contracted, and the upper surface of the cargo piled on the pallet P of the work bed 9 is further lowered to a lower position where the next cargo can be easily carried in. As described above, since the cargo is piled up on the pallet P, the work bed 9 is sequentially lowered by the elevating mechanism 8 to carry the cargo onto the pallet P at a predetermined height and stack the cargo. ..

Next, when the cargo piled up on the pallet P is unloaded and carried out, the hydraulic cylinder device 12 of the elevating mechanism 8 is operated to extend the piston rod 22, and the piston rod 22 lowers the lower cross. The link 10 and the upper cross link 11 are rotated upward, and the work bed 9 is raised by the piston rod 22 and the upper and lower cross links 10 and 11, and the bed plate 28 of the work bed 9 is the floor surface 1 and the floor plate 143.
The hydraulic cylinder device 12 is stopped while being set to a position higher than the entrance / exit 2. When the cargo is unloaded in the front-rear direction, for example, depending on the carrying-out direction of the cargo, a plurality of ball-shaped rotating bodies 94 are projected on the loading base plate 28 at the same height, and the pallet is carried out. Similarly to the case of P loading, two rows of driving tires 58 for loading and unloading in the front-rear direction are projected on the loading base plate 28 at the same height by the respective hydraulic cylinder devices 75, and the driving tires
The upper surface of 58 is set in pressure contact with the lower surface of pallet P.

Further, each of the two rows of the driving tires 59 for carrying in and out in the left and right direction, the plurality of driving tires 60 for changing the direction, the center pivot 42, and the front stoppers 107 on both sides are all respectively provided in the respective hydraulic cylinder devices 50, 75. , 119, it is set to a position lower than the upper surface of the bed plate 28. Then, each of the two rows of driving tires 59 for loading and unloading in the front-rear direction is attached to each hydraulic motor.
The pallet P on which the cargo is piled up by the driving tires 59 in the two rows is moved in the front-back direction of the bed plate 28 of the work bed 9 by rotating the pallet P at 70 at the same speed in the same direction. From one end, that is, the front side, is sequentially carried out toward the conveyor 156, the pallet P is unloaded from the loading base plate 28 and is carried out orderly on the conveyor 156, and when the pallet P is carried out, it is used for carrying in and out in the front-rear direction. The rotational driving of each of the driving tires 59 in the two rows is stopped.

Further, when the cargo is unloaded in the left-right direction and carried out, a large number of ball-shaped rotating bodies 94 are projected on the loading base plate 28 at the same height, and left and right directions are placed on the loading base plate 28. Two driving tires 60 for loading and unloading are projected at the same height by respective hydraulic cylinder devices 75, and the upper surface of each driving tire 60 is set in pressure contact with the lower surface portion of the pallet P. Further, each of the two rows of the driving tires 58 for carrying in and out in the front-rear direction, the plurality of driving tires 60 for changing the direction, the center pivot 42, and the left side stoppers 110 and the inner side stoppers 111 on both sides are respectively provided in the respective hydraulic cylinder devices 50, 75 and 119 are set to a position lower than the upper surface of the bed plate 28. Then, the two rows of the driving tires 60 for loading and unloading in the left and right direction are rotationally driven by the respective hydraulic motors 70 at the same speed in the pallet P unloading direction in the same direction. The pallet P on which the cargo is piled up is the bed plate 28 of the work bed 9.
Is sequentially carried out from one end in the left-right direction, that is, the left side,
This pallet P is unloaded from the top plate 28 and carried out in an orderly manner, and when this pallet P is carried out, the rotational driving of the two rows of the driving tires 60 for carrying in and out in the left-right direction is stopped.

Next, the front side stoppers 107, the rear side stoppers 108, and the right side stoppers 102 on both sides where the pallet P carried onto the load base plate 28 of the work bed 9 is projected onto the load base plate 28.
When the cargo is stacked on the pallet P in the case where the front and rear parts and the left and right parts are supported by the 109 and the inner stopper 111 and the width is relatively narrow, the cargo bed plate 28 of the work bed 9 is used.
A small gap is formed between the floor 1 and the floor surface 1 and the floor plate 143 so that the work bed 9 can be moved up and down. There is no risk of stepping into this small gap, but the pallet P on the load base plate 28 is not affected. When the cargo is stacked on the cargo and further cargo is stacked on the cargo, the bed plate 28 of the work bed 9 is sequentially moved to a position lower than the positions of the floor surface 1 and the floor plate 143 by the operation of the lifting mechanism 8 as described above. When it is set down, this bed plate 28
A relatively large gap is formed between the upper pallet P or the cargo on the pallet P and the floor surface 1 and the floor plate 143, which is a risk of stepping. Also, pallet P
If the left side of the pallet is a relatively wide one supported by the left stopper 110, there is a risk of stepping between the cargo stacked on the pallet P and the floor surface 1 and the floor plate 143. Large gaps may be formed.

In such a case, when the hydraulic cylinder devices 149 disposed on both lower sides of the floor plate 143 are simultaneously operated to extend the respective piston rods 150, the piston rods 150 on the both sides slide the slide base. The interlocking piece 151 of the 145 is pushed toward the load base plate 28, and the sliders 146 on both sides of the slide base 145 are slid along the slatted bearings 144 on both sides to slide base 145.
Are extruded toward the bed plate 28, and the slide base 14
The advancing end 145a of 5 is set to the upper position of the inner stoppers 111 on both sides or the position close to the cargo stacked on the pallet P according to the lowering position of the work bed 9, and the hydraulic cylinders on both sides are set. Deactivate device 149. Due to the advance of the slide base 145, a relatively large gap that may cause a foot step between the pallet P or the cargo on the pallet P and the floor surface 1 and the floor plate 143 is formed on the slide base 145. Blocked,
By stepping on the slide base 145, cargo can be further safely stacked on the cargo.

Further, the hydraulic cylinder devices 149 on both sides are simultaneously operated to retract the respective piston rods 150 to retract the slide bases 145, and the slide bases 145 are housed in the lower part of the floor plate 143, and the load base plates are loaded. Prepare to carry in a large pallet P supported on the left side stoppers 110 on both sides of the pallet 28.

Next, the pallet P carried in on the bed plate 28 of the work bed 9 and the cargo piled up on this pallet P are driven in two directions by two driving tires for carrying in and out in the front-rear direction. 58 or two rows of driving tires 59 for carrying in and out in the left-right direction and a large number of ball-shaped rotating bodies 94, and a plurality of direction-changing driving tires 60 and a large number of ball-shaped rotating bodies 94. The pallet P and the pallet P that are supported and carried in and out, but are carried in on the load base plate 28.
If the cargoes stacked on top are relatively light and are to be carried in and out on the bed plate 28 by hand, only a large number of ball-shaped rotating bodies 94 are provided above the bed plate 28. 2 driving tires in two rows for loading and unloading in the front-rear direction
8. All of the two rows of the driving tires 59 for carrying in and out in the left-right direction and the plurality of driving tires 60 for changing the direction are set down to a position lower than the upper surface portion of the load carrier plate 28. Then, the pallet P and the cargo piled up on the pallet P are supported by a large number of ball-shaped rotating bodies 94 of the carrier plate 28, and these are carried in and out.

As described above, by raising and lowering the work bed 9, the cargo to be carried into the aircraft can be stacked on the work bed 9, or the cargo stacked on the work bed 9 can be unloaded from the work bed. Further, the cargo discharged from the aircraft can be unloaded on the work bed 9.

[0082]

According to the present invention, a work bed is formed in which a storage pit having an opening / closing opening is formed on the floor surface and a cargo is carried in / out via a lifting mechanism on a fixed base arranged at the bottom of the storage pit. The work bed can be set up and down to the same level as the floor surface because it can be moved up and down with respect to the entrance and exit, and cargo can be easily carried in and out of the work bed, and When the cargo is piled up high, the work bed can be easily piled up on the work bed by sequentially setting the work bed downward from the floor surface. Further, a plurality of driving tires for loading and unloading in the front-rear direction provided on the bed of the work bed, a plurality of driving tires for loading and unloading in the left-right direction, a plurality of driving tires for direction change,
Since the center pivot and the large number of rotating bodies are respectively retractable with respect to the upper surface of the loading platform, the drive tires, the center pivots, and the large number of rotating bodies are set on the loading platform by lowering them from the upper surface of the loading platform. Cargo carriers such as forklifts can be directly loaded and the cargo can be efficiently carried on the loading platform. Further, a plurality of direction-changing drive tires and center pivots are projected upward from the upper surface of the bed of the work bed and pressed against the lower surface of the cargo carried on the bed, and the plurality of drive tires are respectively moved in the same direction. By rotating at a high speed, the cargo carried on the cargo bed can be easily changed in direction, and the cargo can be loaded on the cargo bed in a well-balanced and orderly manner without being biased over the entire surface. When carrying out the cargo, it is possible to easily carry out the cargo from a direction that is easy to carry out. Further, a group of a plurality of drive tires for loading / unloading in the front-rear direction and a plurality of drive tires for loading / unloading in the left / right direction are selectively projected from the upper surface of the bed of the work bed to rotate in the same direction at the same speed. By driving, cargo can be easily loaded and unloaded on the loading platform from the front-rear direction or the left-right direction. Therefore, it is possible to improve the loading work efficiency when loading a cargo on the bed of the work bed, and to load the cargo on the entire surface of the bed of the work bed in a high, orderly and stable state.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of one side of an air cargo handling device according to an embodiment of the present invention.

FIG. 2 is a sectional view of the other side of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a plan view showing an arrangement state of each driving tire, a large number of balls and the like as above.

FIG. 5 is a sectional view of one side portion of the same work bed.

FIG. 6 is a sectional view showing a vertical movement mechanism of the center pivot of the above.

FIG. 7 is a side view showing the vertical movement mechanism of the driving tire of the above.

FIG. 8 is a sectional view of the same.

FIG. 9 is a cross-sectional view showing a vertical movement mechanism of a large number of rotating bodies.

FIG. 10 is a side view of the above rotary body support mechanism.

FIG. 11 is a perspective view of the same rotating body.

FIG. 12 is a side view showing the vertical movement mechanism of the stopper.

FIG. 13 is a sectional view of the same.

FIG. 14 is a cross-sectional view showing a lock mechanism of the same work bed.

FIG. 15 is a plan view in which a part of the slide base is cut away.

FIG. 16 is a cross-sectional view showing a slide mechanism of the above slide base.

FIG. 17 is a plan view showing the relationship between the work bed and the conveyor.

[Explanation of symbols]

 1 Floor 2 Entrance / Exit 3 Storage Pit 5 Fixed Base 8 Lifting Mechanism 9 Work Bed 26 Bed 42 Center Pivot 58 Drive Tire for Carrying in / out in the Front / Rear Direction 59 Drive Tire for Carrying in / out in the Left / Right Direction 60 Driving Tire for Direction 94 Ball Rotating body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideyuki Shimomura 4-11-15 Nagatsuda, Midori-ku, Yokohama-shi, Kanagawa (72) Kensuke Toyama 4-26-15, Hiyoshidai, Otsu, Shiga

Claims (1)

[Claims] 1. A storage pit having a doorway opening on a floor surface,
A fixed base disposed at the bottom of the storage pit, and a work bed on which the cargo is carried in and out by being lifted and lowered relative to the entrance and exit via an elevating mechanism on the fixed base, the work bed is A loading platform is provided, and a center pivot is provided at the center of the loading platform so that it can be retracted from the upper surface of the loading platform, and a plurality of drive tires for loading and unloading in the front-rear direction of the loading platform are respectively projected and retracted from the upper surface of the loading platform. A plurality of driving tires for loading and unloading in the left-right direction in the left-right direction of the luggage carrier are provided so as to be retractable from the upper surface of the luggage carrier, and the direction is changed on a virtual circle locus centered on the center pivot. A plurality of driving tires for use on the upper surface of the luggage carrier so that they can be retracted from and to the upper surface of the luggage carrier. The plurality of rotating bodies, the plurality of drive tires for loading and unloading in the front-rear direction, the plurality of drive tires for loading and unloading in the left-right direction, and the direction change are provided on the upper surface of the loading platform. A group of a plurality of drive tires for a vehicle selectively projecting, and the center pivot projects with a plurality of the direction changing drive tires.