JP2016196306A - Wheel transport unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wheel transport unit capable of stably transporting and storing, without damaging a wheel, while improving convenience.SOLUTION: A wheel transport unit 1 is constituted so that a tray 3 for placing a wheel 2 is placed by superposing a plurality of stages to a pallet 4, and the tray 3 is put on the wheel 2 of the uppermost stage, and the pallet 4 for placing the tray 3 for placing the wheel 2 by superposing a plurality of stages, can be placed above the tray 3. The upper surface side of the tray 3 is provided with an annular ring-shaped installation part 31 for installing the wheel 2, an inner peripheral projection part 32 projecting upward from an inner peripheral side part more than the installation part 31 and an upper locking projection part 39 inserted into-locked on a caster opening part formed on an undersurface of the pallet 4 when placing the pallet 4 on the tray 3 by projecting upward from an upper wall part 34 of the inner peripheral projection part 32, and the upper locking projection part 39 is formed in a position separated to the inner peripheral side of the inner peripheral projection part 32 from a peripheral wall part 33 of the inner peripheral projection part 32.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wheel transport unit used for wheel transport and the like.

  Conventionally, when efficiently transporting a plurality of wheels, it is known to use a tray on which (a plurality of) wheels can be installed. More specifically, a plurality of trays on which wheels are placed are stacked and placed on a pallet, and the wheels placed on the pallet are transported together by a forklift or a handlift. Furthermore, when the wheels are stored together or transported by a truck or the like, the tray is placed above the wheel positioned on the uppermost side of the wheels placed on the pallet with multiple trays interposed. A pallet on which a plurality of stacked wheels are placed is placed on the upper side of the tray with the tray interposed therebetween.

  In addition, when a pallet is placed above the tray, in order to prevent horizontal displacement between the tray and the pallet, it protrudes upward on the upper surface side of the tray and enters a lower surface locking hole formed on the lower surface of the pallet. There is a technique of providing an upper locking projection that is inserted and locked (for example, see Patent Document 1).

JP-A-11-278453

  By the way, when the pallet is placed above the tray covered with the wheel, when a downward force is applied to the upper locking projection, such as when the pallet contacts the upper locking projection of the tray. It is conceivable that the peripheral portion of the upper locking convex portion is deformed due to the force. For this reason, for example, when the upper locking projection is provided on the inner circumferential side of the tray where the wheel is installed, the peripheral portion of the tray's upper locking projection is deformed. When it occurs, there is a concern that the deformation part of the tray is pressed against the wheel (especially, a design surface such as a spoke) on which the tray is covered and may be damaged.

  On the other hand, such a concern can be suppressed by providing the upper locking projection only on the outer peripheral side of the annular portion where the wheel is installed on the upper surface side of the tray. However, depending on the type of pallet, from the viewpoint of strength or function, a hole such as a lower surface locking hole may be formed at a position corresponding to a portion on the outer peripheral side of the annular portion of the tray. Some things are difficult. Furthermore, if it is intended to arrange the annular part suitably on the tray side, it becomes difficult to provide the upper locking projections suitably on the outer peripheral part of the annular part (there is no space, There is also a concern that such a situation may occur that the strength cannot be secured or the balance of the overall arrangement becomes worse. As described above, when the formation position of the upper locking projection is limited only to the outer peripheral portion of the annular portion, the shape of the pallet or tray that can be used is also limited, resulting in a decrease in convenience and the like. There is concern.

  The present invention has been made in order to solve the above-described problems and the like, and the object thereof is wheel transportation capable of stably transporting and storing the wheel without damage while improving convenience. To provide a unit.

  In the following, each means suitable for solving the above-described problems will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. A wheel comprising a substantially cylindrical rim, a substantially disc-shaped hub disposed on the inner peripheral side of the rim, and a plurality of spokes extending radially from the outer peripheral surface of the hub to the inner peripheral surface of the rim. A tray on which (multiple) installation parts that can be installed in a direction that penetrates vertically are formed,
A pallet on which a tray can be placed,
Above the pallet, the wheel installed in each installation part of the tray is placed in multiple stages while interposing the tray,
A pallet on which a tray is placed above the uppermost wheel of the plurality of stacked wheels, and the wheels installed in each of the installation portions of the tray are stacked on the tray above the tray. In the wheel transport unit that can be placed,
On the top side of the tray,
Of the pair of openings of the rim of the wheel, the ring-shaped installation part that contacts and supports the peripheral part of the opening on the side where the hub and spoke are not formed,
An inner peripheral convex portion protruding upward from a portion located on the inner peripheral side of the installation portion;
A misalignment prevention convex portion for preventing misalignment of the wheel in the horizontal direction,
On the bottom side of the tray,
When the tray is placed on the pallet, a placement portion that is supported in contact with the top surface of the pallet;
There is provided a lower locking projection that protrudes to a position below the mounting portion and is inserted into and locked to the upper surface locking hole formed on the upper surface of the pallet when the tray is mounted on the pallet. And
When the tray is placed above the wheel installed in each installation section of the tray, the lower surface of the installation section of the tray is the side on which the hub and spoke are formed in the pair of openings of the rim of the wheel. It is configured to be in contact with and supported by the peripheral edge of the opening of
Tray
When the pallet is placed above the tray, a support part that contacts and supports the lower surface of the pallet;
An upper locking projection that protrudes to a position above the support and is inserted into and locked to the lower surface locking hole formed on the lower surface of the pallet when the pallet is placed above the tray. Prepared,
The inner peripheral convex portion has a cylindrical shape with the upper surface side closed,
The upper locking convex portion is formed to protrude upward from the upper wall portion of the inner peripheral convex portion, and is formed at a position spaced from the peripheral wall portion of the inner peripheral convex portion toward the inner peripheral side of the inner peripheral convex portion. Wheel transport unit.

  According to the means 1, when the pallet is placed above the tray, the upper locking convex portion formed on the upper wall portion of the inner peripheral convex portion of the tray is inserted into the lower locking hole formed on the lower surface of the pallet. To be locked. For this reason, when the pallet is placed above the tray, it is possible to prevent the horizontal displacement of the pallet in which the lower surface locking hole can be formed only at the position corresponding to the inner peripheral convex portion of the tray. Can be used as a pallet. Furthermore, if it is intended to arrange the installation portion appropriately on the tray side, it becomes difficult to provide the upper locking projections at the outer peripheral side of the installation portion. Even if the configuration is such that the strength of the locking projections cannot be ensured or the balance of the arrangement of the locking upper projections becomes worse), the upper locking projections are placed on the inner circumferential projections on the inner circumferential side of the installation portion. By providing it, this concern can be wiped out. Therefore, restrictions on the shape of the pallet or tray that can be used as the wheel transport unit can be reduced, and as a result, convenience can be improved.

  Furthermore, despite the configuration in which the lower surface locking hole of the pallet is preferably formed at a position corresponding to the inner peripheral convex portion of the tray, the lower surface locking hole of the pallet is intentionally removed from the position corresponding to the inner peripheral convex portion. As a result, it is possible to avoid a situation in which the strength of the pallet is reduced or the state in which the pallet is placed above the tray is destabilized.

  In addition, an inner peripheral convex portion is provided on the inner peripheral side of the installation portion, and when a tray is put on the wheel, the lower surface of the inner peripheral convex portion and the upper surface of the wheel (design surface such as spokes) can be separated. it can. Therefore, a situation in which the design surface of the wheel is rubbed and damaged by the tray can be suppressed.

  Moreover, since the upper latching convex part is formed in the upper wall part of the inner circumferential convex part at a position spaced from the circumferential wall part of the inner circumferential convex part to the inner circumferential side of the inner circumferential convex part, the upper latching convex part is from above. When pushed, the upper wall portion of the inner peripheral convex portion interposed between the upper locking convex portion and the peripheral wall portion of the inner peripheral convex portion bends downward. For this reason, for example, when forming a part of the side wall part of the upper locking convex part by extending a part of the peripheral wall part of the inner peripheral convex part upward, the upper locking convex part is pressed downward. In such a case, it is possible to avoid a situation in which the force resulting from the pressing acts directly on the peripheral wall portion of the inner peripheral convex portion. Therefore, when the upper locking convex portion is pressed downward, the force for displacing the peripheral wall portion of the inner peripheral convex portion can be minimized. As a result, when the upper locking convex part is pressed downward, it is possible to suppress downward force on the installation part adjacent to the inner peripheral convex part, and as a result, the inner peripheral side edge of the installation part becomes the installation part. It is possible to suppress press contact with the upper surface (design surface such as spokes) of the wheel supporting the lower surface side of the wheel, and further damage to the design surface of the wheel.

  Mean 2. 2. The wheel transport unit according to claim 1, wherein a protrusion length of the upper locking protrusion from the inner peripheral protrusion is shorter than or equal to a protrusion length of the inner protrusion from the installation portion.

  According to the means 2, even if the upper locking convex portion is pressed downward and the upper wall portion of the inner peripheral convex portion is bent downward, the upper wall portion contacts the upper surface of the wheel (design surface such as a spoke). Such a situation can be suppressed.

  Means 3. 3. The means 1 or 2, wherein the support portion is configured by an upper surface of a support convex portion that protrudes upward at a portion located on the outer peripheral side of the installation portion, and an upper surface of the inner peripheral convex portion. Wheel transport unit.

  According to the means 3, the pallet placed above the tray can be supported in a wide area and a wide range as much as possible, and a large load is locally applied to the tray supporting the pallet. Can be suppressed. Therefore, the durability of the tray can be improved. In addition, it is good also as "the said support convex part being comprised by the said position shift prevention convex part."

  Means 4. The wheel transport unit according to any one of means 1 to 3, wherein the lower surface of the installation part is located above the lower surface of the installation part.

  According to the means 4, the installation part of the tray placed above the pallet can be separated upward from the pallet. For this reason, when the wheel placed on the tray is pressed downward, the installation part that supports the wheel enters the space formed between the installation part (lower surface) of the tray and the pallet. In this way, it becomes possible to perform a tilting deformation. Thereby, the situation where a wheel hits a pallet via an installation part and a wheel is damaged because a wheel is pressed below can be controlled.

Means 5. With a band that can bind trays and wheels stacked on a pallet,
The tray is provided with a concave band locking portion for locking the band,
The wheel carrying unit according to any one of means 1 to 4, wherein a side portion of the band locked to the band locking portion and a side surface of the upper locking convex portion are in contact with or close to each other. .

  According to the means 5, the position shift of the band locked to the band locking portion can be restricted by the upper locking convex portion, and the binding state can be stabilized.

It is a perspective view of a wheel conveyance unit. It is a perspective view which shows the upper surface side of a pallet. It is a perspective view which shows the lower surface side of a pallet. It is a perspective view which shows the upper surface side of a tray. It is a perspective view which shows the lower surface side of a tray. It is a top view of a tray. It is a partial expanded sectional view of a wheel conveyance unit. It is a partial expanded sectional view of a wheel conveyance unit. It is a partial expanded sectional view of the wheel conveyance unit which shows the deformation | transformation aspect when an upper latching convex part is pressed by the pallet.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, the wheel transport unit 1 used for transporting and storing the wheel 2 includes a tray 3 in which the wheel 2 is accommodated and a pallet 4 on which the tray 3 can be placed. The wheel 2 of the present embodiment is an aluminum wheel for automobiles, for example, and as shown in FIGS. 1, 7, etc., a substantially cylindrical rim 11 and a substantially disk-like shape arranged on the inner peripheral side of the rim 11. The hub 12 and a plurality of spokes 13 extending radially from the outer peripheral surface of the hub 12 to the inner peripheral surface of the rim 11 are provided.

  As shown in FIGS. 2 and 3, the pallet 4 has a substantially rectangular shape in plan view, and four corner posts 21 provided at the four corners of the pallet 4 and a pair of corners arranged along the side edges of the pallet 4. An intermediate column 22 provided at an intermediate part of the column 21, a central column 23 provided at the center of the pallet 4, an upper deck 24 connecting the corner column 21, the intermediate column 22, and the upper end of the central column 23; , A corner column 21, an intermediate column 22, and a lower deck 25 that connects the lower ends of the central column 23. In addition, between each corner column 21 and the intermediate column 22 is formed a fork insertion part 26 into which a hand lift as a fork lift means or a fork of a fork lift can be inserted. In the present embodiment, the pallet 4 is a four-way type pallet in which forks can be inserted from four side surfaces constituting the outer peripheral surface of the pallet 4.

  As shown in FIG. 2, the upper deck 24 has a straight line between the upper ends of the corner pillars 21, the intermediate pillars 22, and the central pillar 23 that are arranged in parallel with the side parts of the pallet 4. An upper connection bar 27 to be connected and an upper auxiliary bar 28 to connect the upper connection bars 27 on the four sides so as to cover an area surrounded by the upper connection bar 27 are provided. On the other hand, as shown in FIG. 3, the lower deck 25 is a lower end portion of the corner pillars 21, the intermediate pillars 22, and the central pillar 23 that are arranged along the longitudinal direction or the lateral direction of the pallet 1. Although provided with a lower connecting bar 29 that is connected straightly, an area surrounded by the lower connecting bar 29 is a caster opening 30 for grounding a caster provided on the fork tip side of the handlift. An opening is formed. The pallet 4 of this embodiment is made of polypropylene.

  As shown in FIGS. 4 and 6, on the upper surface side of the tray 3, annular installation portions 31 on which the wheels 2 can be installed are formed at seven locations. That is, seven wheels 2 can be placed on one tray 3. As shown in FIG. 8 etc., in each installation part 31, the wheel 2 is installed in the direction in which the opening part on which the hub 12 and the spokes 13 are formed is the upper side of the pair of opening parts of the rim 11. It has come to be. The tray 3 of the present embodiment is made of polyethylene and is integrally formed as a whole by vacuum forming.

  As shown in FIGS. 4 and 7, on the upper surface side of the tray 3, an inner peripheral convex portion 32 that protrudes upward from a portion located on the inner peripheral side of each installation portion 31, and an outer peripheral side of the installation portion 31. A misalignment prevention convex portion 35 that protrudes upward at the position where it is located and abuts with the outer peripheral surface of the wheel 2 installed on the installation portion 31 to prevent misalignment in the horizontal direction is provided. The inner peripheral convex portion 32 includes a substantially cylindrical peripheral wall portion 33 that gradually decreases in diameter upward, and an upper wall portion 34 that closes the opening above the peripheral wall portion 33, and the outer shape is a truncated cone shape. .

  Further, as shown in FIGS. 5 and 8, on the lower surface side of the tray 3, when the tray 3 is placed on the pallet 4, a placement portion 36 that is supported in contact with the upper surface of the pallet 4, When the tray 3 is placed on the pallet 4, it protrudes downward from the placement portion 36 and is inserted into an upper surface locking hole 37 (see FIG. 2) formed on the upper surface of the pallet 4 to be locked. A portion 38 (see FIG. 5) is provided. By inserting the lower locking projection 38 into the upper surface locking hole 37, the horizontal displacement of the upper tray 3 with respect to the lower pallet 4 is prevented.

  In addition, the wheel transport unit 1 is configured so that the wheel 2 installed in each installation portion 31 of the tray 3 can be stacked in a plurality of stages above the pallet 4 with the tray 3 interposed. That is, as shown in FIG. 8 and the like, when the tray 3 is placed above the wheel 2 installed in each installation portion 31 of the tray 3, the lower surface of the installation portion 31 of the tray 3 is attached to the rim 11 of the wheel 2. Of the pair of openings, the peripheral edge of the opening on the side where the hub 12 and the spokes 13 are formed is abutted and supported.

  Furthermore, as shown in FIG. 1 and FIG. 7, the wheel transport unit 1 covers the tray 3 over the wheel 2 positioned on the uppermost side of the plurality of stacked wheels 2 and above the tray 3, A pallet 4 on which a plurality of wheels 2 installed in each installation section 31 of the tray 3 are stacked is placed. In FIG. 1, the tray 3 on which the wheel 2 is placed is placed on the pallet 4 in four layers, and the uppermost wheel 2 covered with the tray 3 is regarded as one unit, and the trays are stacked in two steps. The state (2 units) is shown.

  As shown in FIG. 7, the upper surface of most of the plurality of misalignment prevention protrusions 35 is the same height as the upper surface of the inner peripheral protrusion 32, and the other misalignment prevention protrusions 35 The height position of the upper surface is also slightly lower than the upper surface of the inner peripheral convex portion 32. In the present embodiment, when the pallet 4 is placed above the tray 3, the upper surface of the inner circumferential convex portion 32 and the upper surface of the (most) misregistration preventing convex portion 35 are in contact with the lower surface of the pallet 4. It is configured to support. In the present embodiment, the inner peripheral convex portion 32 and the positional deviation prevention convex portion 35 constitute a support portion, and the positional deviation prevention convex portion 35 constitutes a support convex portion.

  As shown in FIGS. 4 and 7, the tray 3 is an upper member that protrudes upward from the upper wall portions 34 of the four inner peripheral convex portions 32 that are close to the corner portions of the tray 3 among the seven inner peripheral convex portions 32. A stop projection 39 is provided. Each upper locking convex portion 39 is formed at a position spaced from the peripheral wall portion 33 of the corresponding inner peripheral convex portion 32 toward the inner peripheral side of the inner peripheral convex portion 32. Furthermore, as shown in FIG. 7 etc., the protrusion length from the upper wall part 34 of the inner peripheral convex part 32 of the upper latching convex part 39 is shorter than the protrusion length from the installation part 31 of the inner peripheral convex part 32.

  In the present embodiment, when the pallet 4 is placed above the tray 3, each upper locking projection 39 is inserted into a caster opening 30 as a lower surface locking hole formed on the lower surface of the pallet 4. It has come to be. Although each of the upper locking projections 39 is smaller than the caster opening 30, each of the upper locking projections 39 abuts or substantially abuts on the peripheral edge of the caster opening 30 so that the four upper locking projections 39 are formed. As a whole, it is configured to be locked to the opening 30 for the caster (peripheral edge thereof). Thereby, the positional deviation in the horizontal direction of the upper pallet 4 with respect to the lower tray 3 is prevented.

  In addition, as shown in FIG. 8, the lower surface of the installation part 31 is located above the lower surface of the placement part 36. Thereby, the installation part 31 of the tray 3 placed above the pallet 4 is separated from the pallet 4 upward. Further, as shown in FIG. 7, the stepped portion 40 formed between the lower surface of the installation portion 31 and the lower surface of the mounting portion 36, the wheel 2 placed on the tray 3 and the upper side of the wheel 2. When a force that causes the horizontal displacement of the tray 3 placed on the rim 11 is applied, the upper end portion of the outer peripheral surface of the rim 11 of the wheel 2 and the step portion 40 of the tray 3 placed above the rim 11 Are in contact with each other, and positional deviation is regulated. In addition, as shown in FIGS. 5 and 8, the outer dimension of the tray 3 is configured to be slightly larger than the outer dimension of the pallet 4, and the outer peripheral edge of the tray 3 (basically the outer peripheral edge of the tray 3 is A frame portion 41 that protrudes downward from the mounting portion 36 is provided. When the tray 3 is placed on the pallet 4, the frame portion 41 is disposed so as to surround the outer periphery of the pallet 4.

  Further, a band (not shown) capable of binding the tray 3 and the wheel 2 stacked on the pallet 4 may be hung on the wheel transport unit 1. On the other hand, as shown in FIGS. 4 and 6, the outer peripheral surface (frame portion 41) of the tray 3 is provided with a concave band locking portion 42 for locking the band. The band locking part 42 is formed on an extension line of a predetermined side surface of the upper locking convex part 39, and the side side part of the band locked to the band locking part 42 and the upper locking convex part 39. The side surface is in contact with or close to the side surface.

  As described above in detail, according to this embodiment, when the pallet 4 is placed above the tray 3, the four upper locking projections formed on the upper wall portion 34 of the inner circumferential projection 32 of the tray 3. 39 are inserted into the caster openings 30 formed on the lower surface of the pallet 4 and locked. For this reason, when the pallet 4 is placed above the tray 3, the pallet 4 in which the caster opening 30 can be formed only at a position corresponding to the inner circumferential convex portion 32 of the tray 3 is also provided in the horizontal direction. It can be used as a pallet 4 that can prevent displacement. Furthermore, if the installation portion 31 is preferably arranged on the tray 3 side as well, it becomes difficult to suitably provide the upper locking convex portion 39 at a portion on the outer peripheral side of the installation portion 31 (there is no space). Even if the configuration is such that the strength of each of the upper locking projections 39 cannot be ensured or the balance of the arrangement of the upper locking projections 39 is deteriorated), the inner circumferential projections on the inner circumferential side of the installation portion 31 By providing the upper locking projection 39 on 32, such a concern can be wiped out. Therefore, restrictions on the shapes of the pallet 4 and the tray 3 that can be used as the wheel transport unit 1 can be reduced, and as a result, convenience can be improved.

  Furthermore, the caster opening 30 of the pallet 4 corresponds to the inner peripheral protrusion 32, although it is preferable to form the caster opening 30 of the pallet 4 at a position corresponding to the inner peripheral protrusion 32 of the tray 3. It is possible to avoid situations such as degrading the strength of the pallet 4 and destabilizing the state in which the pallet 4 is placed above the tray 3 due to the fact that the pallet 4 is removed from the position. .

  In addition, an inner peripheral convex portion 32 is provided on the inner peripheral side of the installation portion 31. When the tray 2 is covered with the wheel 2, the lower surface of the inner peripheral convex portion 32 and the upper surface of the wheel 2 (design surfaces such as the spokes 13). ) Can be separated from each other. Therefore, a situation in which the design surface of the wheel 2 is rubbed and damaged by the tray 3 can be suppressed.

  Further, the upper locking convex portion 39 is formed at a position spaced apart from the peripheral wall portion 33 of the inner peripheral convex portion 32 toward the inner peripheral side of the inner peripheral convex portion 32 in the upper wall portion 34 of the inner peripheral convex portion 32. When the upper locking projection 39 is pushed from above, the upper wall 34 of the inner circumferential projection 32 interposed between the upper locking projection 39 and the circumferential wall 33 of the inner circumferential projection 32 is It will bend downward. For this reason, for example, when forming a part of the side wall portion of the upper locking projection 39 by extending a part of the peripheral wall portion 33 of the inner circumferential projection 32 upward, the upper locking projection 39 is When pressed downward, it is possible to avoid a situation in which the force resulting from such pressing directly acts on the peripheral wall portion 33 of the inner peripheral convex portion 32. Therefore, when the upper latching convex part 39 is pressed downward, the force for displacing the peripheral wall part 33 of the inner peripheral convex part 32 can be minimized. As a result, when the upper latching convex part 39 is pressed downward, it is possible to suppress the downward force on the installation part 31 adjacent to the inner peripheral convex part 32, and consequently the inner peripheral edge of the installation part 31. However, it can suppress that it press-contacts to the upper surface (design surface, such as the spoke 13) of the wheel 2 which is supporting the lower surface side of the installation part 31, and also damages the design surface of the wheel 2. FIG.

  In addition, the protruding length of the upper locking convex portion 39 from the inner peripheral convex portion 32 is shorter than the protruding length of the inner peripheral convex portion 32 from the installation portion 31. For this reason, even if the upper locking convex part 39 is pressed downward and the upper wall part 34 of the inner peripheral convex part 32 is bent downward, the upper wall part 34 is the upper surface of the wheel 2 (design surface such as the spoke 13). It is possible to suppress the situation of touching.

  In addition, in this embodiment, when the pallet 4 is placed above the tray 3, the upper surface of the inner peripheral protrusion 32 and the upper surface of most of the misalignment prevention protrusions 35 abut against the lower surface of the pallet 4. And is configured to support. For this reason, the pallet 4 placed above the tray 3 can be supported in a wide area and a wide range as much as possible, and a large load is locally applied to the tray 3 that supports the pallet 4. This can be suppressed. Accordingly, the durability of the tray 3 can be improved.

  In addition, the lower surface of the installation portion 31 on which the wheel 2 is installed on the upper surface side is located above the lower surface of the mounting portion 36 that is supported in contact with the upper surface of the pallet 4 when the tray 3 is placed on the pallet 4. doing. Thereby, the installation part 31 of the tray 3 placed on the pallet 4 can be separated upward from the pallet 4. For this reason, when the wheel 2 placed on the tray 3 is pressed downward, the installation unit 31 that supports the wheel 2 is placed between the installation unit 31 (lower surface) of the tray 3 and the pallet 4. It is possible to tilt and deform so as to enter the formed space. Thereby, the situation where the wheel 2 hits the pallet 4 via the installation part 31 and the wheel 2 is damaged by pressing the wheel 2 downward can be suppressed.

  Further, on the outer peripheral surface of the tray 3, a band locking portion 42 is formed on an extension line of a predetermined side surface of the upper locking projection 39, and the side portion of the band locked to the band locking portion 42 is formed. And the side surface of the upper locking projection 39 are in contact with or close to each other. For this reason, the position shift of the band latched by the band latching part 42 can be controlled by the upper latching convex part 39, and the bundling state can be stabilized.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above-described embodiment, the upper locking projection 39 is provided only on the inner circumferential projection 32 on the inner circumference side of the installation portion 31, but the position on the outer circumference side of the installation portion 31 (for example, prevention of displacement) The upper locking projection 39 may also be provided on the upper wall of the projection 35. Further, the number, shape, size, and the like of the upper locking projections 39 and the lower locking projections 38 are not particularly limited, and can be appropriately changed according to the shape of the pallet 4 to be combined. . Furthermore, in the said embodiment, although the protrusion length from the inner peripheral convex part 32 of the upper latching convex part 39 is comprised shorter than the protrusion length from the installation part 31 of the inner peripheral convex part 32, it is good also as the same, for example.

  Further, the number of installation portions 31 is not particularly limited, and may be one, for example. Further, a plurality of types of wheels 2 having different sizes may be installed by one tray 3 by increasing the width of the installation unit 31. The shape of the pallet 4 is not particularly limited. For example, the pallet 4 may not be formed with the caster opening 30 or may be a two-way type.

  (B) In the above embodiment, the height position of the upper surface of the plurality of misalignment prevention convex portions 35 may be configured to be unified at the same height position as the upper surface of the inner peripheral convex portion 32. Further, for example, the height position of the upper surface of the inner circumferential convex portion 32 is configured to be slightly lower (for example, about 1 mm to 2 mm) than the height position of the upper surface of the misalignment preventing convex portion 35, and the pallet 4 placed on the upper side is slightly In the case of bending, the bottom surface of the pallet 4 may be supported by the top surface of the misalignment prevention convex portion 35. Further, apart from the misalignment prevention projection 35, a support projection that protrudes upward on the outer peripheral side of the installation portion 31 and supports the bottom surface of the pallet 4 when the pallet 4 is placed above the tray 3. It is good also as providing. In this case, the protruding length of the misalignment preventing convex portion 35 may be shorter than the protruding length of the inner peripheral convex portion 32 or the like.

  (C) Further, the outer peripheral shape of the inner peripheral convex portion 32 is not particularly limited, but the upper engaging convex portion 39 of the tray 3 placed on the wheel 2 is pressed downward, and the peripheral portion is deformed. Moreover, it is desirable that the outer peripheral shape of the inner peripheral convex portion 32 is an annular shape like the outer peripheral shape of the wheel 2 so that a force as uniform as possible acts on the rim 11 of the wheel 2 as widely as possible. Further, by forming the peripheral wall portion 33 of the inner peripheral convex portion 32 into a taper shape that gradually decreases in diameter toward the upper side, when the upper locking convex portion 39 is pressed downward, the installation portion 31 is interposed via the peripheral wall portion 33. The magnitude | size of the downward force which acts can be reduced, and it can suppress further that the design surface of the wheel 2 is damaged.

  (D) In the above embodiment, the tray 3 is made of polyethylene and the pallet 4 is made of polypropylene. However, the tray 3 may be made of other materials.

  DESCRIPTION OF SYMBOLS 1 ... Wheel conveyance unit, 2 ... Aluminum wheel, 3 ... Tray, 4 ... Pallet, 11 ... Rim, 12 ... Hub, 13 ... Spoke, 30 ... Caster opening, 31 ... Installation part, 32 ... Inner peripheral convex part, 33 ... Peripheral wall part 34 ... Upper wall part 35 ... Position displacement prevention convex part 36 ... Placement part 37 ... Upper surface locking hole 38 ... Lower locking convex part 39 ... Upper locking convex part 42 ... Band engagement Stop.

Claims (5)

A wheel comprising a substantially cylindrical rim, a substantially disc-shaped hub disposed on the inner peripheral side of the rim, and a plurality of spokes extending radially from the outer peripheral surface of the hub to the inner peripheral surface of the rim. A tray formed with an installation portion that can be installed in a direction that penetrates up and down;
A pallet on which a tray can be placed,
Above the pallet, the wheel installed in each installation part of the tray is placed in multiple stages while interposing the tray,
A pallet on which a tray is placed above the uppermost wheel of the plurality of stacked wheels, and the wheels installed in each of the installation portions of the tray are stacked on the tray above the tray. In the wheel transport unit that can be placed,
On the top side of the tray,
Of the pair of openings of the rim of the wheel, the ring-shaped installation part that contacts and supports the peripheral part of the opening on the side where the hub and spoke are not formed,
An inner peripheral convex portion protruding upward from a portion located on the inner peripheral side of the installation portion;
A misalignment prevention convex portion for preventing misalignment of the wheel in the horizontal direction,
On the bottom side of the tray,
When the tray is placed on the pallet, a placement portion that is supported in contact with the top surface of the pallet;
There is provided a lower locking projection that protrudes to a position below the mounting portion and is inserted into and locked to the upper surface locking hole formed on the upper surface of the pallet when the tray is mounted on the pallet. And
When the tray is placed above the wheel installed in each installation section of the tray, the lower surface of the installation section of the tray is the side on which the hub and spoke are formed in the pair of openings of the rim of the wheel. It is configured to be in contact with and supported by the peripheral edge of the opening of
Tray
When the pallet is placed above the tray, a support part that contacts and supports the lower surface of the pallet;
An upper locking projection that protrudes to a position above the support and is inserted into and locked to the lower surface locking hole formed on the lower surface of the pallet when the pallet is placed above the tray. Prepared,
The inner peripheral convex portion has a cylindrical shape with the upper surface side closed,
The upper locking convex portion is formed to protrude upward from the upper wall portion of the inner peripheral convex portion, and is formed at a position spaced from the peripheral wall portion of the inner peripheral convex portion toward the inner peripheral side of the inner peripheral convex portion. Wheel transport unit.   2. The wheel transport unit according to claim 1, wherein a protrusion length of the upper locking protrusion from the inner peripheral protrusion is shorter than or equal to a protrusion length of the inner protrusion from the installation portion. .   The said support part is comprised by the upper surface of the support convex part which protrudes upwards in the site | part located in the outer peripheral side of the said installation part, and the upper surface of the said inner peripheral convex part, It is characterized by the above-mentioned. Wheel transport unit.   4. The wheel transport unit according to claim 1, wherein a lower surface of the installation part is located above a lower surface of the installation part. 5. With a band that can bind trays and wheels stacked on a pallet,
The tray is provided with a concave band locking portion for locking the band,
The wheel conveyance according to any one of claims 1 to 4, wherein a side portion of the band locked to the band locking portion and a side surface of the upper locking convex portion are in contact with or close to each other. unit.

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