Tire rack

Abstract

To provide a tire rack capable of storing a tire by efficiently using the width of the tire rack by a constitution for avoiding interference between a column of the tire rack and a carrying device of the tire.SOLUTION: A tire rack 10 includes a first frame 20, four first support columns 22a to 22d, a second frame 30, and at least two first mounting rods 24a and 24b. The two first placement rods 24a and 24b have such a length that a plurality of tires standing along the first placement rods 24a and 24b can be placed side by side. Among the four first support columns 22a to 22d, a part or all of the two first support columns 22a and 22b located at positions sandwiching the two first mounting rods 24a and 24b can be removed from the first frame 20 and the second frame 30, or can be moved to a retracted position when the tire is placed on the first mounting rods 24a and 24b.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a tire rack for storing multiple tires. [Background technology]

[0002] BACKGROUND ART Conventionally, tire racks using a metal frame for storing a plurality of tires in an upright state have been common (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-254100 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with conventional tire racks, when storing tires, the device used to transport the tires can interfere with the support posts at the four corners of the tire rack. As a result, even if a rack is wide enough to accommodate four tires, there are cases where only three tires can be stored due to interference between the transport device and the support posts.

[0005] Some aspects of the present invention provide a tire rack that can store multiple tires by efficiently utilizing the width of the tire rack through a configuration that avoids interference between the tire rack's supports and a tire transport device. [Means for solving the problem]

[0006] The present invention has been made to solve at least part of the above-mentioned problems, and can be realized as any of the following aspects.

[0007] One aspect of the tire rack according to the present invention is a first frame having a rectangular shape in a plan view; four support columns extending upward from four corners of the first frame; a second frame having a rectangular shape in a plan view, the four corners of which are supported by the four columns; At least two mounting rods provided on the first frame; Equipped with The two mounting rods have a length sufficient to mount a plurality of tires in an upright state along the mounting rods, Of the four pillars, part or all of the two pillars located on either side of the two mounting rods can be removed from the first frame and the second frame, or can be moved to a retracted position when loading a tire onto the mounting rods.

[0008] In one aspect of the tire rack, Some or all of the two pillars that can be moved to the retracted position may have their upper ends guided by the second frame and their lower ends guided by the first frame, and may be movable to the retracted position along the direction in which the mounting rod extends.

[0009] In one aspect of the tire rack, Some or all of the two pillars that can be moved to the retracted position may have their upper ends guided by the second frame and their lower ends guided by the first frame, and may be movable to the retracted position along a direction perpendicular to the direction in which the mounting rod extends.

[0010] In one aspect of the tire rack, A part or all of the two support columns that can move to the retracted position may have upper ends that are removably attached to the second frame and lower ends that are rotatably attached to the first frame.

[0011] In one embodiment of the tire rack, The support is a first support, the mounting rod is a first mounting rod, The tire rack is four second support columns extending upward from four corners of the second frame; a third frame having a rectangular shape in a plan view, the four corners of which are supported by the four second support columns; At least two second mounting rods provided on the second frame; Furthermore, the two second mounting rods have a length sufficient to mount a plurality of tires in an upright state along the second mounting rods, Of the four second support pillars, some or all of the two second support pillars located on either side of the two second mounting rods may be removable from the second frame and the third frame, or may be movable to a retracted position when loading a tire onto the second mounting rod. [Effects of the Invention]

[0012] According to the tire rack of the present invention, by making some of the supports removable or movable, interference with the tire transport device can be avoided, allowing tires to be stored by efficiently utilizing the width of the tire rack. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a perspective view of a tire rack according to a first embodiment. [Figure 2] FIG. 1 is an enlarged view of the first support pillar. [Figure 3] FIG. 4 is a front view schematically showing a tire rack according to a modified example of the first embodiment. [Figure 4] FIG. 10 is a perspective view of a tire rack according to a second embodiment. [Figure 5] FIG. 10 is a left side view schematically showing a tire rack according to a second embodiment. [Figure 6] FIG. 10 is a front view schematically showing a tire rack according to a second embodiment. [Figure 7] FIG. 1 is an enlarged view of the first support pillar. [Figure 8] FIG. 10 is an enlarged view of a first support pole of a tire rack according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0014] Preferred embodiments of the present invention will be described in detail below. It should be understood that the present invention is not limited to the embodiments described below, but also includes various modifications that are implemented within the scope of the present invention.

[0015] The tire rack of this embodiment comprises a first frame that is rectangular in plan view, four pillars extending upward from the four corners of the first frame, a second frame that is rectangular in plan view and has its four corners supported by the four pillars, and at least two mounting rods provided on the first frame, wherein the two mounting rods are long enough to mount multiple tires in an upright position along the mounting rods, and part or all of the two of the four pillars that are located between the two mounting rods can be removed from the first frame and the second frame, or can be moved to a retracted position when placing a tire on the mounting rods.

[0016] 1. First embodiment The tire rack 10 according to the first embodiment will be described in detail using Figures 1 to 3. Figure 1 is a perspective view of the tire rack 10 according to the first embodiment. Figure 2 is an enlarged view of a first support pillar 22a of the tire rack 10. Figure 3 is a front view schematically showing a tire rack 10 according to a modified example of the first embodiment. In this specification, "up" and "down" refer to the up and down directions when the tire rack 10 (tire rack 100) is installed, and are directions along the Y axis.

[0017] 1, tire rack 10 includes a first frame 20, four first support columns 22a-22d, a second frame 30, and at least two first mounting rods 24a, 24b. Tire rack 10 may further include four second support columns 32a-32d, a third frame 40, and at least two second mounting rods 34a, 34b to store tires 50 in two upper and lower levels.

[0018] The first frame 20 is provided, for example, on the base frame 12. Here, "plan view" refers to viewing the tire rack 10 from above in the direction along the Y axis. The base frame 12 is rectangular in plan view. The base frame 12 is a metal structure placed on an installation surface on which the tire rack 10 is installed. The first frame 20 is supported by four base supports 13a to 13d extending upward from the four corners of the base frame 12. The height of the base supports 13a to 13d prevents a tire placed at the height of the first frame 20 from contacting the installation surface. As long as the tire 50 (FIGS. 3 and 4) placed on the first frame 20 does not contact the installation surface, a structure other than the base frame 12, such as multiple legs, may be used.

[0019] The first frame 20 has a rectangular shape in a plan view. The first frame 20 can have substantially the same shape as the base frame 12 in a plan view. The first frame 20 functions as a lower shelf on which tires 50 are placed. The first frame 20 is formed, for example, by joining four metal first rods 21a-21d. Each joint in the tire rack 10 can be joined using a known method for joining metal members, such as welding, except for detachable portions. The first frame 20 may be joined at its four corners via first support columns 22a-22d as shown in FIG. 1. The first rods 21a-21d are arranged, for example, within a single XY plane, but this is not a limitation. For example, the first rods 21a and 21c may be located at the same height as first mounting rods 24a and 24b (described later), which are slightly higher than the first rods 21b and 21d. In this case, the first rods 21a and 21c also function as mounting rods.

[0020] At least two first mounting rods 24a, 24b are provided on the first frame 20. The two first mounting rods 24a, 24b have a length sufficient to place a plurality of tires 50 in an upright position along the first mounting rods 24a, 24b (see, for example, FIG. 3). The first mounting rods 24a, 24b are hung between the first rod 21b and the first rod 21d. The first mounting rods 24a, 24b are made of metal to withstand the weight of the plurality of tires 50. The first mounting rods 24a, 24b are preferably cylindrical to facilitate placing the tires 50 on them. Both ends of the first mounting rods 24a, 24b may be configured to be detachable from the first rods 21b, 21d. The distance between the first mounting rods 24a, 24b is preferably adjustable depending on the size of the tires to be mounted.

[0021] The first mounting rods 24a, 24b can mount tires 50 in two rows in the X-axis direction between the first rods 21a, 21c, which are positioned opposite each other with a predetermined gap between them (two rows of tires 50 are shown in the lower part of FIG. 5). When storing tires 50 with a relatively large diameter, the tires 50 may be mounted in a single row only between the first mounting rods 24a, 24b (one row of tires 50 is shown in the upper part of FIG. 5). The first rods 21a, 21c, which have a rectangular cross section as shown in FIG. 1, may be provided with cylindrical auxiliary rods 27a, 27b. The auxiliary rods 27a, 27b are fixed at positions that come into contact with the tires 50 to be mounted, for example, on the first rods 21a, 21c. The first mounting rods 24a, 24b and the auxiliary rods 27a, 27b are provided at the same height, for example. The auxiliary rods 27a, 27b of the first rods 21a, 21c function as mounting rods for mounting the tire 50 in combination with the first mounting rods 24a, 24b. Furthermore, if the first rods 21a, 21c are cylindrical, for example, the auxiliary rods 27a, 27b may be omitted.

[0022] Two reinforcing rods 26, 26 extending vertically are preferably provided at the positions on the first rods 21b, 21d where both ends of the first mounting rods 24a, 24b are attached. The reinforcing rods 26, 26 can supplementarily support the load of the tire 50 applied to the first mounting rods 24a, 24b. The reinforcing rods 26, 26 may be metal members extending from the base frame 12 to the second frame 30, or may be metal members extending from the base frame 12 to the third frame 40.

[0023] The four first support columns 22a to 22d extend upward from the four corners of the first frame 20. The first support columns 22a to 22d are made of metal. The first support columns 22a to 22d may include portions continuing from the base support columns 13a to 13d. Of the four first support columns 22a to 22d, part or all of the two first support columns 22a and 22b located on either side of the two first mounting rods 24a and 24b are detachable from the first frame 20 and the second frame 30. In FIG. 1, part of the first support column 22a and part of the first support column 22b to which both ends of the front first rod 21b are joined are detachable. The first support columns 22a and 22b have the same basic configuration. At least two support columns located diagonally across the first mounting rods 24a and 24b may be detachable. For example, the combination of removable supports may be a combination of first support 22a and first support 22c, or a combination of first support 22b and first support 22d. Also, a structure in which all of first support 22a to 22d are removable may be adopted. In Fig. 1, first support 22c and 22d may be metal members that are continuous with base support 13c and 13d.

[0024] The second frame 30 has four corners supported by four first support columns 22a to 22d. The second frame 30 has a rectangular shape in a plan view. The second frame 30 can have substantially the same shape as the first frame 20 in a plan view. The second frame 30 functions as an upper shelf of the tire rack 10 on which tires 50 are placed. The second frame 30 is formed by joining four metal second rods 31a to 31d. The ends of the second rod 31a and the ends of the second rods 31b and 31d may be at different heights in the Y-axis direction, in which case they may be joined via second support columns 32a and 32d. Similarly, the second rod 31c may be joined to the ends of the second rods 31b and 31d via second support columns 32b and 32c.

[0025] An example of a first support pillar 22a, a portion of which is detachable from the first frame 20 and the second frame 30, will be described using FIG. 2. The first support pillar 22a includes a base 220b extending upward from the first frame 20, a base 220c extending downward from the second frame 30, and a detachable portion 220a located between the bases 220b and 220c. The lower end of the base 220b is joined to the ends of the first rods 21a and 21b. The upper end of the base 220b is located slightly higher than the first rod 21a and has a portion that receives the lower end of the detachable portion 220a. The upper end of the base 220c is joined to the end of the second rod 31b. The lower end of the base 220c is located slightly lower than the second rod 31b and has a portion that receives the upper end of the detachable portion 220a. The base 220c includes a fastener 44a that engages, for example, the top end of the detachable portion 220a, and the detachable portion 220a includes a fastener 44b that engages the top end of the base 220b.

[0026] The method of removing and attaching the first support 22a will be described using the example of Fig. 2. First, with the detachable portion 220a in the position shown by the broken line, the fixing tool 44a is moved upward to remove it. The engagement between the detachable portion 220a and the fixing device 44a is released, and the fixing device 44b is moved upward to release the engagement between the fixing device 44b and the base portion 220b. Then, the detachable portion 220a is removed from the base portions 220b, 220c in the direction of the arrow (X-axis). After storing the tire, the detachable portion 220a is moved to the position indicated by the dashed line while the fixing devices 44a, 44b are moved upward. Then, the fixing devices 44a, 44b are moved downward to integrate the detachable portion 220a and the base portions 220b, 220c.

[0027] Fig. 3 is a modification of the first embodiment, showing the tire rack 10 as viewed from the front along the X-axis direction. As shown in Fig. 3, the tire rack 10 differs from the examples shown in Figs. 1 and 2 in that the entire first support pillar 22a is configured to be detachable from the first frame 20 and the second frame 30. In this case, the first support pillar 22a may be fixed to the first frame 20 and the second frame 30 using the same configuration as the fasteners 44a and 44b described in Fig. 2, instead of the bases 220b and 220c. The first support pillar 22b and the second support pillars 32a and 32b may also have the same configuration as the first support pillar 22a in Fig. 3.

[0028] The tire rack 10 can store multiple tires 50 along the Z-axis direction, for example, four tires 50 as shown in Figure 3. By making some or all of the first support columns 22a, 22b removable, it is possible to avoid interference between the first support column 22a or removable portion 220a and a transport device for the tire 50 at the leftmost end when viewed from the front. Conventionally, even if there was enough width to place another tire 50 on the first mounting rods 24a, 24b, interference between the first support columns 22a, 22b and the transport device would mean that the tire 50 could not be placed. However, because the first support columns 22a, 22b are removable, the width of the tire rack 10 can be efficiently used to store tires 50.

[0029] Next, a description will be given of the configuration of the upper tier of the tire rack 10. The configuration for placing the tires 50 on the upper tier is basically the same as that on the lower tier.

[0030] 1, the second rods 31a and 31c of the second frame 30 are, for example, cylindrical. The second rods 31a and 31c can be disposed at the same height as second mounting rods 34a and 34b, which will be described later. The second rods 31a and 31c function as mounting rods on which the tire 50 is mounted in combination with the second mounting rods 34a and 34b. The second rods 31a and 31c may also have a structure including an auxiliary rod for mounting the tire 50, as in the first frame 20.

[0031] The four second pillars 32a to 32d extend upward from the four corners of the second frame 30, for example. The second pillars 32a to 32d are made of metal. The second pillars 32a to 32d may include portions that are continuous with the first pillars 22a to 22d. In the example of FIG. 1, the base pillars 13c and 13d, the first pillars 22c and 22d, and the second pillars 32c and 32d are configured from a single member from bottom to top. Of the four second pillars 32a to 32d, some or all of the two second pillars 32a and 32b located on either side of the two second mounting rods 34a and 34b are detachable from the second frame 30 and the third frame 40, for example. The second pillars 32a and 32b may have a configuration similar to that of the first pillars 22a and 22b described above.

[0032] The third frame 40 has four corners supported by, for example, four second support columns 32a to 32d. The third frame 40 has, for example, a rectangular shape in a plan view. The third frame 40 can have substantially the same shape as the second frame 30 in a plan view. The third frame 40 has a plurality of hoists 42 at its upper end. The hoists 42 are provided so as to protrude upward from the four corners of the third frame 40. A wire (not shown) can be hooked to the hoists 42, and the tire rack 10 can be hoisted and transported using a crane or the like. The third frame 40 is formed by joining a plurality of metal rods.

[0033] At least two second mounting rods 34a, 34b are provided, for example, on the second frame 30. The two second mounting rods 34a, 34b can have a length that allows multiple tires 50 to be placed side by side in an upright state along the second mounting rods 34a, 34b. By changing the spacing between the second mounting rods 34a, 34b, tires 50 with large diameters can also be placed between the second mounting rods 34a, 34b, as shown in the upper row of Figure 5.

[0034] The tire rack 10 has excellent storage capacity by providing two shelves, one above the other. Furthermore, although the tire rack 10 of this embodiment has a two-tier configuration, it may have only one tier, or may have three or more tiers of shelves. By providing three or more tiers of shelves, the storage capacity per installation area is improved. In particular, since the second supports 32a, 32b can be removed from the upper tier of the tire rack 10, the width of the upper tier of the shelves can be used efficiently.

[0035] 2. Second embodiment A tire rack 100 according to the second embodiment will be described using Figs. 4 to 7. Fig. 4 is a perspective view of the tire rack 100 according to the second embodiment. Fig. 5 is a left side view schematically showing the tire rack 100 according to the second embodiment. Fig. 6 is a front view schematically showing the tire rack 100 according to the second embodiment. Fig. 7 is an enlarged view of the first support pillar 22a. Fig. 8 is an enlarged view of the first support pillar 22a of a tire rack 100 according to a modified example. Note that the second frame 30 in Fig. 5 is shown without the second rod 31b on the near side, and Figs. 5 and 6 are shown without the rail 46.

[0036] 4, the tire rack 100 includes a first frame 20, four first support columns 22a-22d, a second frame 30, and at least two first mounting rods 24a, 24b. The tire rack 100 may further include four second support columns 32a-32d, a third frame 40, and at least two second mounting rods 34a, 34b to store tires 50 in two tiers, one above the other. The basic configuration of the tire rack 100 is the same as that of the tire rack 10 according to the first embodiment, and therefore a redundant description will be omitted.

[0037] The two first support columns 22a, 22b of the tire rack 100 can be moved to a retracted position when placing the tire 50 on the first mounting rods 24a, 24b. The two second support columns 32a, 32b can also be moved to a retracted position when placing the tire 50 on the second mounting rods 34a, 34b. The retracted positions are positions where a tire 50 transport device can place the tire 50 on the first frame 20 without interfering with the first support columns 22a, 22b. The first support columns 22a, 22b and the second support columns 32a, 32b have the same basic configuration. To clearly illustrate the movement, FIG. 4 shows the second support column 32a at a corner of the second frame 30 in its initial state, and the second support column 32b as it begins to move toward the second support column 32a. 4, the first support column 22b is shown to have moved closer to the retracted position than the second support column 32b, and the first support column 22a is shown to be in the retracted position. The arrow next to the first support column 22a in FIG. 4 indicates the direction of movement back to the initial position.

[0038] Some or all of the two first support columns 22a, 22b that can move to the retracted position can be moved to the retracted position along a direction perpendicular to the extension direction of the first mounting rods 24a, 24b (X-axis direction) with their upper ends guided by the second frame 30 and their lower ends guided by the first frame 20. Also, some or all of the two second support columns 32a, 32b that can move to the retracted position can be moved to the retracted position along a direction perpendicular to the extension direction of the second mounting rods 34a, 34b (X-axis direction) with their upper ends guided by the third frame 40 and their lower ends guided by the second frame 30.

[0039] As shown in Fig. 5, the first support columns 22a, 22b and the second support columns 32a, 32b can move horizontally to the retracted positions indicated by the dashed lines. Note that the reinforcing rods 26, 26 are omitted from Fig. 5.

[0040] 6, some or all of the first support column 22a and the second support column 32a that can move to the retracted position may be guided at their upper ends by the second frame 30 and at their lower ends by the first frame 20, and may be movable to the retracted position along the direction in which the first mounting rods 24a, 24b extend (the Z-axis direction). To explain the direction of movement in the example of FIG. 6, an arrow pointing along the direction in which the first mounting rod 24a extends (the Z-axis direction) is shown to the right of the second support column 32a in FIG. 4. Although not shown, the first support column 22b and the second support column 32b can move to the retracted position along the Z-axis direction in the same way as the first support column 22a and the second support column 32a.

[0041] The first frame 20 includes a guide mechanism that guides the lower ends of the first support columns 22a and 22b. The second frame 30 includes a guide mechanism that guides the upper ends of the first support columns 22a and 22b and a guide mechanism that guides the lower ends of the second support columns 32a and 32b. The third frame 40 includes a guide mechanism that guides the upper ends of the second support columns 32a and 32b. The guide mechanism may be a rail 46 as shown in FIG. 4. Rails 46 are fixed to the top of the first rod 21b. The first support columns 22a and 22b can move while being guided along the rails 46. Furthermore, rails 46 are fixed to the top of the second rod 31b. The second support columns 32a and 32b can move while being guided along the rails 46. A known guide mechanism can be used as the mechanism that guides the first support columns 22a and 22b and the second support columns 32a and 32b along the rails 46. Instead of the rails 46, the first rods 21a, 21c and the second rods 31a, 31b may be used as guide members.

[0042] As shown in Fig. 7, the upper and lower ends of the first support pillar 22a are disposed within rails 46, 46, and can slide along the upper and lower surfaces of the rails 46, 46. The upper and lower ends of the first support pillar 22a may be rounded to facilitate sliding. Alternatively, bearings or wheels may be provided at the upper and lower ends of the first support pillar 22a, allowing the first support pillar 22a to move by rolling motion. The rails 46 preferably have a shape that can receive the upper and lower ends of the first support pillar 22a and makes it difficult for them to come off. The first support pillar 22b and the second support pillars 32a, 32b may have the same configuration as the first support pillar 22a.

[0043] In the second embodiment, almost all of the first pillars 22a, 22b and second pillars 32a, 32b are configured to be able to move to the retracted position, but as long as interference with the tire 50 transport device can be avoided, only a portion of the first pillars 22a, 22b and second pillars 32a, 32b may be made movable as in the first embodiment.

[0044] The first support columns 22a, 22b and the second support columns 32a, 32b can be fixed in their initial positions at the corners of the first frame 20 to the third frame 40. The fixing means is not particularly limited, but for example, the mechanism of the fixing devices 44a, 44b described with reference to Figure 2 can be used.

[0045] Furthermore, the direction in which the first support columns 22a, 22b and the second support columns 32a, 32b move to the retracted positions is not limited to the direction along the frame, as long as interference with the tire 50 transport device can be avoided.

[0046] A modified example of the first support column 22a in the second embodiment will be described using FIG. 8. As shown in FIG. 8, part or all of the first support column 22b that can be moved to the retracted position has, for example, an upper end removably attached to the second frame 30 and a lower end rotatably attached to the first frame 20. The upper end of the first support column 22b can be fixed to and released from the second rod 31b by a fastener 44. By making the first support column 22b rotatable, the first support column 22b can be easily moved to the retracted position. The retracted position in this modified example is above the first rod 21a, as indicated by the dashed line. Although not shown, the first support column 22a and the second support columns 32a and 32b can be rotated in the same way as the first support column 22b and moved to the retracted position.

[0047] The present invention is not limited to the above-described embodiments, and various modifications are possible. The present invention includes configurations that are substantially the same as those described in the embodiments (for example, configurations with the same function, method, and result, or configurations with the same purpose and effect). The present invention also includes configurations in which non-essential parts of the configurations described in the above embodiments are replaced with other configurations. Furthermore, the present invention also includes configurations that achieve the same effects or purposes as the configurations described in the above embodiments. Furthermore, the present invention also includes configurations in which publicly known technology is added to the configurations described in the above embodiments. [Explanation of symbols]

[0048] 10,100...Tire rack, 12...Base frame, 13a to 13d...Base support, 20...First frame, 21a to 21d...First rod, 22a to 22d...First support, 220a...Removable portion, 220b, 220c...Base, 24a to 24d...First mounting rod, 26...Reinforcement rod, 27a, 27b...Auxiliary rod, 30...Second frame, 31a to 31d...Second rod, 32a to 32d...Second support, 34a, 34b...Second mounting rod, 40...Third frame, 42...Hanging tool, 44...Fixing tool, 46...Rail, 50...Tire

Claims

1. a first frame having a rectangular shape in a plan view; four support columns extending upward from four corners of the first frame; a second frame having a rectangular shape in a plan view, the four corners of which are supported by the four columns; At least two mounting rods provided on the first frame; Equipped with the two mounting rods have a length sufficient to mount a plurality of tires in an upright state along the mounting rods, Of the four pillars, part or all of the two pillars located on either side of the two mounting rods can be removed from the first frame and the second frame, or can be moved to a retracted position when loading a tire onto the mounting rods.

2. The tire rack according to claim 1, A tire rack in which some or all of the two pillars that can be moved to the retracted position have their upper ends guided by the second frame and their lower ends guided by the first frame, and can be moved to the retracted position along the direction in which the mounting rod extends.

3. The tire rack according to claim 1, A tire rack in which some or all of the two pillars that can be moved to the retracted position have their upper ends guided by the second frame and their lower ends guided by the first frame, and can be moved to the retracted position along a direction perpendicular to the direction in which the mounting rod extends.

4. The tire rack according to claim 1, A tire rack, wherein some or all of the two support pillars that can be moved to the retracted position have upper ends that are removably attached to the second frame and lower ends that are rotatably attached to the first frame.

5. The tire rack according to any one of claims 1 to 4, the support is a first support, the mounting rod is a first mounting rod, The tire rack is four second support columns extending upward from four corners of the second frame; a third frame having a rectangular shape in a plan view, the four corners of which are supported by the four second support columns; At least two second mounting rods provided on the second frame; Furthermore, the two second mounting rods have a length sufficient to mount a plurality of tires in an upright state along the second mounting rods, A tire rack in which, of the four second supports, part or all of the two second supports located on either side of the two second mounting rods can be removed from the second frame and the third frame, or can be moved to a retracted position when loading a tire onto the second mounting rod.

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