JP6933892B2 - palette - Google Patents

Description

According to the present invention, long objects such as building materials can be loaded and transported by a forklift or the like, stacked and stored in a loaded state, or empty single units can be stacked and stored and transported. It is about a pallet for.

Palettes on which long objects such as building materials are mounted have various lengths and are transported by a forklift in a state of being stacked at various heights. In order to stably support long objects, luggage with a low stacking height is light in weight and easily moves due to vibration during transportation, so it is preferable to support the vicinity of both ends of the luggage, and luggage with a high stacking height , It is preferable to support the uppermost part in order to prevent the load from collapsing from the upper part.

When storing cargo, the pallets on which the cargo is loaded are stacked by a forklift or the like, but the work must be accurate, safe and easy. Further, since the pallet is subjected to a load for a long time during storage, it must be able to withstand the load without bending or deforming.

Further, when the pallets are not used, the empty pallets are stacked and stored or transported (empty transport) by themselves, so that it is desired to improve the volumetric efficiency at the time of stacking.

Conventional examples of this type of pallet are those shown in Patent Documents 1 to 5. Patent Document 1 discloses a pallet in which stands are provided at four corners of the pallet body so that posts can be raised and lowered and undulated freely. In Patent Document 2, receiving metal fittings are provided at the four corners of the bottom frame, a panel is provided between a pair of columns that can be moved by the receiving metal fittings, and the columns at both ends of the panel are vertically attached to the receiving metal fittings to use the panel. It can be folded by installing it in the room, lifting the panel a little, and then tilting it inward.

Patent Document 3 discloses a tire pallet in which short columns are erected at four corners of a rectangle, and a telescopic frame member is built in a column rotatably supported by the columns. When this pallet is used, the frame member is expanded and contracted according to the load height of the tire to support the tire, and when folded, the frame member is reduced and the pillar is rotated toward the base.

In Patent Document 4, support portions are provided at the four corners of the mounting frame on the flat plate, and each support portion is provided with a support column having an inner cylinder and an outer cylinder, and this support column can be further folded on the mounting frame. The pallets erected in are shown, and it is stated that the height of the stanchions can be changed according to the size of the loaded luggage, and that a large number of folded empty pallets can be stacked when not in use.

Patent Document 5 describes a pallet having four pillar mounting portions having a predetermined height arranged on both sides of a loading surface and a plurality of pillars having a plurality of different lengths that are detachably mounted on the pillar mounting portions. Has been done. It is intended to improve the versatility of the pallet by appropriately adjusting the length of the pillar according to the height of the loaded article.

Jikkenhei 07-022928 Japanese Unexamined Patent Publication No. 05-338652 Jikkenhei 06-018242 Japanese Unexamined Patent Publication No. 05-085544 Japanese Unexamined Patent Publication No. 2005-153905

In Patent Documents 1 and 2, the pallet can be folded, but the height of the stand or the panel cannot be changed according to the height of the load. Further, since the pallet is a box type and the load is supported only by the posts at the four corners of the pallet body, both ends of the pallet project greatly from the posts, which makes it unstable during transportation by a forklift or the like.

In Patent Document 3, since various members such as beams that support the tire are required at the time of use, a great deal of labor is required at the time of assembling and folding. In addition, since the stretchable frame members built into the columns interfere with each other and overlap at the time of folding, the volumetric efficiency deteriorates when folded and stacked, and the volumetric efficiency becomes higher when various members such as beams are included. It gets worse. Further, since the columns are provided only at the four corners of the mounting frame, the long object is lifted by a forklift or the like as in Patent Documents 1 and 2, and becomes unstable during transportation.

In Patent Document 4, since the columns are provided only at the four corners of the mounting frame, when a long object is transported, it is lifted by a forklift or the like as in Patent Documents 1 and 2, and becomes unstable during transportation.

In Patent Document 5, when loading a load on a pallet and when stacking an empty pallet alone, it is necessary to attach / detach the pillar to / from the pillar mounting portion, and when transporting an empty pallet when not in use, It takes time and effort to store the removed pillars in the pallet. Further, since the heights of the pillar mounting portions are projected at all four fixed positions, the volumetric efficiency of the empty pallet when not in use is significantly reduced.

The present invention is considered to be a defect of the above-mentioned prior art, and is stably supported and transported according to the length and stacking height of the load, and the pallets in the mounted state are stacked in a plurality of stages, and a single unit is used. It provides a pallet for transporting and storing long objects that can be stacked with good volumetric efficiency.

The present invention that achieves the above object is in a pallet for transporting or storing a long object in which a long object is mounted on a rectangular frame composed of a long horizontal frame and a short vertical frame and transported or stored.
Corner receiving portions protruding from the four corners of the rectangular frame,
A plurality of central receiving portions projecting toward the center of each of the horizontal frames,
A corner strut that is pivotally supported by each of the corner receiving portions and rotates to an upright position that locks to the corner receiving portion and a folding position that abuts on the horizontal frame, and is pivotally supported by each of the central receiving portions and is centered. It is equipped with a central support that rotates to an upright position that locks to the receiving portion and a folding position that abuts on the horizontal frame.
The central strut has a telescopic structure composed of an outer frame and an inner frame that slides within the outer frame.
The central receiving portion is characterized in that it is projected at a position where it does not interfere with the corner column at the folded position.

Further, in the above, the length of the central column and the projecting position of the central receiving portion are set so that the plurality of central columns do not interfere with each other at the folded position.

Further, in the above, the fixing pin projecting outward from the inner frame of the central strut is provided, and the outer frame is provided with a plurality of fixing holes having different heights at which the pin is fitted.

According to these configurations, the load is supported at an appropriate position by the corner support or the central support according to its length and stacking height, so that stable transportation and stacking storage can be performed. In addition, empty pallets can be stacked with high volumetric efficiency when not in use.

Further, in the above, the corner receiving portion and the central receiving portion have the same height dimension, and each has a stacking metal fitting at the lower part.

According to this configuration, empty pallets when not in use can be stacked with high volumetric efficiency, and the pallets are stacked via the corner receiving portion and the central receiving portion, so that the load is distributed. Can be stacked stably. This also allows stable stacking when stacking pallets with loads on top of each other.

Further, in the above, the corner receiving portion and the central receiving portion are characterized by having an engaging portion that engages the corner strut and the central strut in an upright position to prevent rotation, respectively.

Further, in the above, the engaging portion is a groove portion in which the corner strut and the central strut sink in the standing position, so that the corner strut and the convex portion provided on the central strut are locked in the vertical direction, respectively. It is characterized by.

According to these configurations, the corner strut and the central strut are doubly locked in the upright state, respectively, and it is possible to prevent the strut from tipping over.

Further, in the above, each of the horizontal frames is characterized by having two fork insertion ports into which forks are inserted in the vicinity of the central receiving portion.

According to this configuration, when the pallet is lifted by the fork, a force acts in the vicinity of the central receiving portion of the horizontal frame, so that there is almost no vertical bending of the central receiving portion and the high load is centered. It can be stably supported by the columns. In addition, since there is almost no vertical deflection of the central receiving part, when stacking pallets with loads on them, the horizontal misalignment between the upper and lower central receiving parts is reduced, and the work is accurate. Safe and easy.

Further, in the above, the horizontal frame and the vertical frame are characterized in that each has a fork insertion slot.

According to this configuration, the fork can be inserted from any direction of the four frames of the rectangular pallet, so that the degree of freedom during cargo handling and transportation is increased.

Further, in the above, the dimensional ratio of the horizontal frame to the vertical frame is set to about 2: 1.

According to this configuration, the dimensional ratio of the horizontal and vertical frames is set to about 2: 1, so when loading the pallets on the loading platform of the vehicle, the loading can be efficiently performed from either the longitudinal direction or the width direction of the loading platform. It will be possible.

Further, in the above, the plastic step (plastic corrugated cardboard) is attached to the contact surface between the horizontal frame, the vertical frame, the corner receiving portion, the central receiving portion, the corner strut, and the load of the central strut. It is a feature.

According to this configuration, since the load and the pallet come into contact with each other at the plastic stage of the cushioning material, damage to the load can be suppressed.

According to the present invention, the pallets are stably supported and transported according to the length and height of the load, and the pallets in the loaded state can be stacked accurately, safely and easily. Multiple empty pallets can be stacked, stored, and transported with high loading efficiency.

It is a perspective view of the pallet of the Example of this invention. It is also a side view of the pallet. It is an enlarged view which shows a part of the palette shown in FIG. It is operation explanatory drawing of the corner support | center support | position of a pallet. It is explanatory drawing of the rotation operation of the corner column of a pallet. It is explanatory drawing of the pushing-down operation of the corner support of a pallet. FIG. 5 is an explanatory view of FIG. 5 viewed from the opposite side. FIG. 6 is an explanatory view of FIG. 6 viewed from the opposite side. It is a perspective view which shows the central column of a pallet enlarged. It is explanatory drawing of the telescopic structure of the central support of a pallet. It is a perspective view of the state where a low-height load is placed on a pallet. It is a perspective view of the state where a high load is placed on a pallet. It is a perspective view of the state in which the pallets on which the load is placed are stacked. It is explanatory drawing of the stacking state of the pallet alone through a corner receiving part and a central receiving part. It is explanatory drawing of the state of stacking through the corner column of a pallet. It is explanatory drawing of the state of stacking through the central column of a pallet. It is explanatory drawing of the stacking state through the central support which extended the pallet.

Hereinafter, an example of a pallet for transporting and storing a long object according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a single unit of the pallet 100.

In FIG. 1, the pallet 100 is configured by providing two upper and lower rectangular frames, one of which is a long horizontal frame made of steel and the other of which is a short vertical frame, and connecting the two. The long horizontal frame is composed of the upper horizontal frames 101, 103 and the lower horizontal frames 102, 104, and the short vertical frame is composed of the upper vertical frames 201, 203 and the lower vertical frames 202, 204. The dimensional ratio of the horizontal frame to the vertical frame is set to about 2: 1.

Reference numerals 301 to 304 are corner receiving portions provided at the four corners of the upper rectangular frame and the lower rectangular frame so as to project upward, and are made of a steel material having a U-shaped cross section and open toward the upper horizontal frames 101 and 103. It is welded between the upper and lower rectangular frames. The corner receiving portions 301 to 304 pivotally support the corner columns described later and lock them in an upright position. The corner receiving portions 301 to 304 are opened upward, and the corner columns described later are pivotally supported and locked in an upright position.

Reference numerals 305 and 307 are two central receiving portions provided so as to face the center of the upper horizontal frame 101 and project upward, and are made of a steel material having a U-shaped cross section so that the opening sides thereof face each other. Welded between the upper and lower rectangular frames. The central receiving portions 305 and 307 are opened upward, and pivotally support the central support column described later and lock the central receiving portions 305 and 307 in the upright position.

Reference numerals 306 and 308 are two central receiving portions provided so as to project upward toward the center of the upper horizontal frame 103, and are made of a steel material having a U-shaped cross section. Welded between the frames. The central receiving portions 306 and 308 are open upwards, and pivotally support the central support column described later and lock the central receiving portions 306 and 308 in the upright position.

The corner receiving portions 301 to 304 and the central receiving portions 305 to 308 are set to have the same height, and the height of the portion above the upper horizontal frame 101 or 103 is slightly larger than the width of the corner strut and the central strut. It is set to, and has stacking metal fittings 301a to 308a at the lower part of each. Each stacking metal fitting has an enlarged bottom, and when the pallet alone is stacked, the upper ends of the corner receiving portion and the central receiving portion of the lower pallet receive the expanded bottom portion of the upper stacking metal fitting.

Each of the 401 to 404 is a square pipe-shaped corner support whose lower portion is pivotally supported by the corner receiving portions 301 to 304, and rotates to a folded position shown in FIG. 1 and an upright position shown in FIG. 4 described later.

Reference numerals 501 to 504 are square pipe-shaped central columns whose lower portions are pivotally supported by the central receiving portions 305 to 308, and rotate to the folding position shown in FIG. 1 and the standing position shown in FIG. 4 to be described later. The central columns 501 to 504 are set to have dimensions longer than the corner columns 401 to 404.

The central receiving portions 305 to 308 are installed at positions that do not interfere with the tips of the corner columns 401 to 404 at the folded positions, respectively. The lengths of the central columns 501 to 504 are set so that the tips of the opposing central columns (for example, 501 and 503) do not interfere with each other at the folded position, and the mounting positions of the central receiving portions 305 to 308 are set. Is decided.

Plastic steps 301b, 303b, 305b, 307b are attached to the insides of the corner receiving portions 301 to 304 and the central receiving portions 305 to 308 as interference sheets for protecting the pallet load from being scratched. Further, plastic steps 401a, 403a, 501a, and 503a are also attached to the inner sides of the corner columns 401 to 404 and the center columns 501 to 504.

Reference numerals 205 and 206 are upper and lower reinforcing frames connecting between the central receiving portions 305 and 306 facing each other between the horizontal frames. Similarly, 207 and 208 are upper and lower reinforcing frames that connect between the opposing central receiving portions 307 and 308.

209 and 210 are central vertical frames connecting between the upper horizontal frames 101 and 103 near the center, and 105 and 106 are central horizontal frames connecting between the upper vertical frames 201 and 203 near the center. Reference numeral 109 denotes a bundle column that connects the upper and lower horizontal frames and the vertical frames for reinforcement. The intersecting portions of the frames described above are connected by welding.

Reference numerals 601 and 602 are fork insertion holes formed by the upper horizontal frame 101 and the lower horizontal frame 102, and are formed at positions sandwiched between the central receiving portions 305 and 307. Reference numerals 603 and 604 are fork insertion holes formed by the upper horizontal frame 103 and the lower horizontal frame 104, and are formed so as to be sandwiched between the central receiving portions 306 and 308.

Since the fork insertion holes are provided on the four sides of the rectangular frame in this way, the pallet 100 can be used in any of the four directions (A to D) according to the access conditions to the pallet mounting position (for example, the loading platform of the vehicle). By inserting the fork from the direction of, it becomes possible to carry. In addition, since the dimensional ratio of the horizontal frame to the vertical frame is set to about 2: 1, when loading the pallets on the loading platform of the vehicle, it is possible to efficiently load the pallets from either the longitudinal direction or the width direction of the loading platform. Become.

FIG. 2 is a side view of the pallet according to the embodiment of the present invention, and FIG. 3 is an enlarged view showing a part of the pallet of FIG. 2 in an enlarged manner.

Both figures show the connection structure of the corner receiving portions (302, 304), the central receiving portions (306, 308), and the upper and lower horizontal frames (103, 104), and the upper surface of the upper horizontal frame (103). A plastic corrugated plastic (not shown in FIG. 1) 103a that suppresses damage to the load is attached to the vehicle.

Each corner receiving portion 302, 304 and the central receiving portion 306, 308 have an engaging groove and an engaging hole as engaging portions for locking the corner support and the central support in the upright position to prevent rotation, respectively. Provided. In FIG. 3, the engaging groove 302b and the engaging hole 302c provided in the corner receiving portion 302 are shown as representatives.

As shown in FIG. 3, each stacking metal fitting (for example, 302a) has an enlarged bottom, and the inside of the bottom has an inclined surface (for example, 302d) and is closed. The inclined surface 302d guides the lower end of each corner receiving portion and the central receiving portion as a guide so as to be received by the closed portion inside the bottom.

FIG. 4 is an explanatory view of the corner column and the center column of the pallet rotating between the upright position and the folded position. The corner columns 402 and 404 and the central columns 502 and 504 are pivotally supported at the upper ends of the corresponding engaging holes of the corner receiving portion and the central receiving portion (in FIG. 2, the engaging holes 302c are represented as representatives). NS.

The corner columns 402, 404 and the central columns 502, 504 are in the horizontal position where they are in contact with the upper horizontal frame 103 in the folded position, and the corresponding engagement holes of the corner receiving portion and the central receiving portion are formed in the standing position, respectively. It rotates to the center, enters the inside through the U-shaped opening of each receiving portion, abuts on the inner side wall of each receiving portion, and is maintained in an upright state in the vertical direction.

At the folding position, the length is set so that the tips of the opposing central columns (for example, 502 and 504) do not interfere with each other, and the mounting position of each central receiving portion (for example, 306 and 308) is determined. Be done. Also, in the folded position, the mounting position of each central receiving portion (for example, 306 and 308) so that the tip of each corner support (for example, 402, 404) does not interfere with each central receiving portion (for example, 306 and 308). Is decided.

As shown by arrows in FIG. 4, each central strut (for example, 502 and 504) has a structure in which an inner frame (described later) slides in an upright position and expands and contracts in two stages. The telescopic structure will be described later.

Next, the locking operation of the corner column 401 to the corner receiving portion 301 will be described with reference to FIGS. 5 and 6. As shown in the figure, the corner receiving portion 301 has an engaging hole 301c, the corner support 401 has a convex portion 401b, and the convex portion 401b is pivotally supported at the upper end of the engaging hole 301c.

As shown in FIG. 5, the corner support column 401 rotates clockwise from the folded position and stands up in a state of being locked to the inner wall of the corner receiving portion. Then, when the convex portion 401b is pushed down in the direction of the arrow as shown in FIG. 6, the convex portion 401b is lowered to the lower end in the engaging hole 301c and engaged, and the rotation of the corner column 401 is prevented.

7 and 8 are explanatory views of FIGS. 5 and 6 viewed from the opposite side. As shown in the figure, the corner receiving portion 301 has an engaging groove 301d, and the corner strut 401 has a convex portion 401c. As shown in FIG. 7, the corner column 401 rotates counterclockwise from the folded position and stands up. Then, when the convex portion 401c is pushed down in the direction of the arrow as shown in FIG. 8, the convex portion 401c engages with the engaging groove 301d, and the rotation of the corner column 401 is prevented.

The structure of engaging the corner strut and the corner receiving portion described above is also applied to the engaging structure of the central strut and the central receiving portion. According to these configurations, the corner strut and the central strut are doubly locked in the upright state, respectively, to prevent the strut from tipping over.

FIG. 9 is an enlarged perspective view of the central support column. The central columns 502, 503, 504 have a square pipe-shaped outer frame (502, 503, 504) and a telescopic structure of a round pipe-shaped inner frame 502b, 503b, 504b that slides in the outer frame. These inner frames are contracted in the folded state of the central strut and can be extended only in the upright state of the central strut.

Each central strut is composed of a square pipe, and a plurality of engaging holes 504d are provided on two opposite sides thereof at different heights. Engagement protrusions 504c corresponding to a plurality of engagement holes 504d are provided on the outer periphery of the inner frame 504b so as to protrude on both sides in the radial direction thereof. The engaging hole 504d is formed in an inverted L shape in which the upper portion is a horizontally elongated hole and the vertically elongated hole communicates with the lower portion.

FIG. 10 is an enlarged view of the circled portion of FIG. 9, and is an explanatory view in which the inner frame 504b is slid and engaged in the central support column. As shown in FIG. 10A, the inner frame 504b is slid within the outer frame 504 of the central strut, and the engaging projection 504c is raised to the height of the upper part of the engaging hole 504d. In this state, the engaging protrusions 504c face the corners in the outer frame 504 and are separated from each other, so that they do not come into contact with the outer frame 504.

Next, as shown in FIG. 10B, the inner frame 504b is rotated clockwise as indicated by the arrow when viewed from above, and each engaging protrusion 504c is formed on the upper portion of the engaging holes 504d on the two opposite sides of the square pipe. Facing the horizontally long hole. In this state, since the engaging protrusion 504c is located so as to face the two sides of the outer frame 504 that are close to each other, it fits into the horizontally elongated hole of the engaging hole 504d.

Further, as shown in FIG. 10C, the inner frame 504b is pushed downward as indicated by the arrow, and the engaging protrusion 504c is pushed into the lower part of the engaging hole 504d. The inner frame 504b is prevented from rotating and descending from its position, and stably engages with the outer frame 504.

Since the engagement holes 504d are provided at two locations having different heights, the inner frame 504b can be slid in the central support column 504 and extended in two stages, and the height of the load on the pallet 100 can be extended. The height of the central strut can be changed in multiple stages according to the situation.

FIG. 11 shows a state in which a long load having a low stacking height is placed on a pallet. Since the load 701 having a low stacking height is light in weight as a whole, it is easy to move due to the vibration of the vehicle during transportation. Therefore, in order to support both ends and suppress movement, the load is supported by corner columns 401 to 404 provided at the four corners of the rectangular frame at both ends of the pallet.

FIG. 12 shows a state in which a long load 702 having a high stacking height is placed on a pallet. The load 702 with a high stacking height is likely to cause a load collapse from the top. Therefore, in order to support the uppermost part of the load and prevent it from collapsing, the load is supported by the inner frames 501b to 504b which are extended by one step of the central columns 501 to 504 provided near the center of the pallet. Although the corner columns 401 to 404 are folded, they may be erected.

As described above, the pallet in which the load is supported by the corner support or the central support is lifted by inserting the fork of the forklift into the fork insertion holes 603 and 604, and is carried to the loading platform or storage place of the vehicle.

According to these configurations, the load is supported at an appropriate position by the corner support or the central support according to its length and stacking height, so that stable transportation and storage can be performed.

FIG. 13 describes the stacking of pallets on which a load is placed. In FIG. 13, pallets on which a load having a high stacking height shown in FIG. 12 is placed are stacked in two stages. At this time, the height of the lower load is relative to the height of the central strut or, if the inner frame is extended, the height of the inner frame so that the bottom of the upper pallet does not come into contact with the lower load 703. It can be kept low.

In the stacking operation of FIG. 13, the upper pallet on which the load 704 is placed is lifted by two forks with respect to the lower pallet on which the load 703 is placed in advance, and the inner frames 501b to 504b of the central support of the lower pallet are lifted. It is stacked so that the expanded bottom of the stacking metal fittings 305a to 308a of the central receiving portion of the upper pallet is placed on the upper end.

When stacking, the upper pallet was lifted by two forks inserted into the fork insertion holes 603 and 604, and the support parts of the forks were used as fulcrums on both sides in the longitudinal direction of the pallet due to the weight of the load. A downward moment is applied. When this moment causes downward bending on both sides of the pallet, both sides of the upper pallet may be lowered and the stacking metal fittings may be tilted.

In this embodiment, the central receiving portions 306 and 308 are formed in the vicinity of the fork insertion holes 603 and 604 on the center side of the pallet and are close to the support point of the fork, so that a heavy load is mounted on the central receiving portions 306 and 308. However, there is almost no bending due to the moment with the fork as the fulcrum.

Therefore, in the lifted state by the fork, there is no inclination of the enlarged bottom of the stacking metal fittings (306a, 308a in FIG. 13) of the central receiving portion (306, 308 in FIG. 13) of the upper pallet, and the center of the lower pallet. The work is accurate, safe and easy when stacking on the upper ends of the inner frames 501b to 504b of the columns.

The stacking with the load shown in FIG. 13 is adopted when the load is stored in a warehouse or the like, or when it is placed on the loading platform of a transport vehicle.

FIG. 14 is a perspective view showing a state in which empty pallets are stacked alone. With the corner support and the center support folded, the pallets alone are stacked via all the corner receiving parts (302, 304 in FIG. 14) and all the center receiving parts (306, 308 in FIG. 14). .. Since the load is distributed between the corner receiving portion and the central receiving portion, a large number of empty pallets can be stably stacked.

Stacking of pallets alone is used when empty pallets are stacked and stored in a warehouse, etc., or when only pallets are transported and returned. The corner receiving part and the central receiving part are at the same height, and the upper horizontal frame The height of the upper part is set to a dimension slightly larger than the diameter of the corner strut and the central strut. Therefore, since the corner columns in the folded state and the corner receiving portion and the central receiving portion having a height slightly protruding from the central column are stacked, it is possible to stack a large number of empty pallets with high volumetric efficiency. can.

FIG. 15 shows a state in which pallets are stacked via corner columns. In the folded state of the central strut, stacking is performed via the upright corner strut (402, 404 in FIG. 15) engaged with each corner receiving portion. At this time, the enlarged bottoms of the corner receiving metal fittings (302a, 304a in FIG. 15) of the corner receiving portion of the pallet on the upper stage are placed on the upper end of each corner column. As shown in FIG. 11, FIG. 15 is used in the case of stacking pallets on which a load having a low stacking height is placed.

FIG. 16 shows a state in which pallets are stacked via a central support column. With the corner columns folded, stacking is performed via all the central columns (502, 504 in FIG. 16) in an upright state engaged with the central receiving portions (306, 308 in FIG. 16). At this time, the expanded bottoms of the stacking metal fittings (306a, 308a in FIG. 16) of the central receiving portions of the upper pallets are stacked on the upper end of each central column.

FIG. 17 shows a state in which the inner frame of the central column of the pallet is extended by one step and stacked. With the corner columns folded, the inner frames (502b, 504b in FIG. 17) of all the standing central columns engaged with the central receiving portion (306, 308 in FIG. 17) were extended by one step. Stacking is done in the state. At this time, at the upper end of each inner frame, the enlarged bottom portion of the stacking metal fittings (306a, 308a in FIG. 17) of each central receiving portion of the upper pallet is received.

When stacking the inner frames of the central columns of the pallets in a state of being extended by two stages, as in FIG. 17, at the upper end of the second inner frame (not shown), each central receiving portion of the upper pallet. Receives the enlarged bottom of the stacking metal fittings (306a, 308a in FIG. 17).

16 and 17 are used when stacking pallets on which a load having a high stacking height is placed, as shown in FIG.

100 ... Palette, 101, 103 ... Upper horizontal frame,
102, 104 ... Lower horizontal frame, 105, 106 ... Central horizontal frame, 109 ... Bundle pillar,
201, 203 ... Upper vertical frame, 202, 204 ... Lower vertical frame,
205, 206, 207, 208 ... Reinforcing frame, 209, 210 ... Central vertical frame,
301, 302, 303, 304 ... Corner receiving portions, 301a, 302a, 303a, 304a, 305a, 306a, 307a, 308a ... Stacking metal fittings,
301d, 302b ... engaging groove, 301c, 302c ... engaging hole, 302d ... inclined surface,
305, 306, 307, 308 ... Central receiving portion, 401, 402, 403, 404 ... Corner strut, 401b, 401c ... Convex portion, 501, 502, 503, 504 ... Central strut, outer frame, 501b. 502b, 503b, 504b ... Inner frame, 504c ... Engagement protrusion,
504d ... Engagement holes, 601, 602, 603, 604, 605, 606, 607, 608 ... Fork insertion holes,
103a, 301b, 303b, 305b, 307b, 401a, 403a, 501a, 503a ... Plastic corrugated plastic, 701 ... Low-height load,
702, 703, 704 ... High loads.

Claims (10)

A rectangular frame consisting of a long horizontal frame and a short vertical frame,
Corner receiving parts protruding from the four corners of the rectangular frame,
A plurality of central receiving portions having the same height as the corner receiving portions, which are projected toward the center of each of the horizontal frames.
It is pivotally supported by each of the corner receiving portions, and is pivotally supported by a corner strut that rotates between an upright position that locks to the corner receiving portion and a folding position that abuts on the horizontal frame, and each of the central receiving portions. A central strut that rotates between an upright position that locks to the central receiving portion and a folding position that abuts on the horizontal frame is provided.
The central strut has a telescopic structure including an outer frame longer than the corner strut and an inner frame sliding within the outer frame, as well as being longer than the corner strut.
The pallet is characterized in that the central receiving portion is located at a position where it does not interfere with the corner column at the folded position. In the pallet according to claim 1,
A pallet characterized in that the length of the central strut and the projecting position of the central receiving portion are set so that the plurality of the central strut do not interfere with each other at the folded position. In the pallet according to claim 1 or 2.
A pallet having a fixing pin projecting outward from the inner frame of the central strut, and a plurality of fixing holes having different heights in which the fixing pin is fitted to the outer frame. In the pallet according to any one of claims 1 to 3,
The corner receiving portion and the central receiving portion each have a stacking metal fitting at the lower part.
The stacking metal fitting at the lower part of the corner receiving portion is placed on the upper end of the corner receiving portion of another pallet having the same configuration as the pallet, and the stacking metal fitting at the lower end of the central receiving portion is the other pallet. The pallets are stacked on the other pallets at the first interval while being placed on the upper end of the central receiving portion of the pallet.
With the stacking bracket at the bottom of the corner receiving portion resting on the upper end of the corner column of the other pallet, the pallet is placed on the other pallet at a second interval wider than the first interval. And the state of being piled up in
With the stacking bracket at the bottom of the central receiving portion resting on the upper end of the central column of the other pallet, the pallet is placed on the other pallet at a third interval wider than the second interval. And the state of being piled up in
A palette characterized by being able to switch between. In the pallet according to any one of claims 1 to 4,
The pallet is characterized in that the corner receiving portion and the central receiving portion have an engaging portion that engages the corner strut and the central strut in an upright position to prevent rotation, respectively. In the pallet according to claim 5.
The engaging portion is a pallet which is a groove portion in which the corner strut and the central strut sink in the standing position so that the corner strut and the convex portion provided on the central strut are vertically locked, respectively. .. In the pallet according to any one of claims 1 to 6,
Each of the horizontal frames is a pallet having two fork insertion ports into which forks are inserted in the vicinity of the central receiving portion. In the pallet according to any one of claims 1 to 7.
Each of the horizontal frame and the vertical frame is a pallet having a fork insertion slot. In the pallet according to any one of claims 1 to 8.
A pallet characterized in that the dimensional ratio of the horizontal frame to the vertical frame is set to about 2: 1. In the pallet according to any one of claims 1 to 9,
A pallet having plastic steps attached to the horizontal frame, the vertical frame, the corner receiving portion, the central receiving portion, the corner strut, and the contact surface of the central strut with a load.

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