Tire transport device

Abstract

To provide a tire transport device that reduces the time and labor required for packaging tires. [Solution] The tire transport device 1 comprises a base 2, a tray 43 provided on the base 2 and containing bags T1 for packaging the tire T, a mounting table 3 provided on the base 2 and capable of being raised and lowered, on which the tire T can be placed in an upright position, a drive unit 4 for driving the mounting table 3 to be raised and lowered, and a plurality of wheels 5a, 5b, 5c, 5d arranged on the base 2 and rotatable around a first axis L1 perpendicular to the underside 2a of the base 2, and the mounting table 3 comprises a pair of first rollers 6a, 6b for supporting the sides of the tire T from the sides, and a pair of second rollers 7a, 7b for supporting the outer circumferential portion of the tire T from below.

Description

[Technical field]

[0001] The present invention relates to a tire transport device for allowing an operator to pack and transport automobile tires. [Background technology]

[0002] A typical prior art is described in, for example, Patent Document 1. This prior art describes a tire lifter used for attaching and detaching tires to a lifted vehicle. The tire lifter has a support part that supports a tire and a lifting mechanism that supports the support part so that it can be raised and lowered. The lifting mechanism includes a winding drum that lifts the support part by winding up a wire rope extended from the support part, and a biasing means that biases the winding drum in the winding direction.

[0003] Another conventional technique is described in, for example, Patent Document 2. This conventional technique describes a wheel dolly for vehicle maintenance, which includes a movable base frame and a wheel rack that is provided on the base frame so that it can be raised and lowered. The wheel dolly is configured so that it can be raised and lowered so that the set height can be adjusted according to the different body shapes and different wheel diameters of each worker when the wheels to be removed from the vehicle are placed on the wheel rack. The set height is set to a height that does not apply a load to the bearing between the wheel and a housing that accommodates a driving member such as a drive shaft of the vehicle. The wheel rack is configured so that it can be tilted freely, and is used to perform the work of removing and installing wheels while the vehicle is lifted up so that a working space is secured so that the worker can face the center of the wheel from the front, and the axle position is such that the worker can work in a natural standing posture. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2017-071228 A [Patent Document 2] JP 2013-001248 A Summary of the Invention [Problem to be solved by the invention]

[0005] In the prior art of Patent Documents 1 and 2, when a tire with wheels attached is removed from a vehicle and then loaded on the vehicle to be taken home after tire replacement, the tire with wheels attached may be loaded on the vehicle in a bag made of resin such as polyethylene or polypropylene in order to prevent the tire with wheels from soiling the interior equipment. Since foreign objects such as sand and mud attached to the tire with wheels fall into the bag, it is necessary to rotate the tire with wheels attached after being stored in the bag together with the bag so that the opening of the bag is located upward. Such rotation of the tire with wheels attached after being stored in the bag is performed manually by an operator, and the tire is transported to the vehicle with a lot of work. Therefore, there is a demand for a tire transport device that can easily pack the tire with wheels attached in a bag and transport it smoothly to the vehicle with the opening facing upward.

[0006] An object of the present invention is to provide a tire transport device that can easily pack and smoothly transport tires. [Means for solving the problem]

[0007] The present invention includes a base and a storage section provided on the base and configured to store a bag for packaging a tire; a placement table that is arranged to be able to rise and fall along the base and on which the tire packed in the bag can be placed in an upright state; a drive unit provided on the base for driving the mounting table upward and downward; A plurality of wheels are provided on the base so as to be rotatable about an axis perpendicular to a lower surface of the base, The mounting table is a pair of first rollers for supporting sides of the tire packed in the bag from the sides; and a pair of second rollers for supporting from below the outer circumferential portion of the tire packed in the bag.

[0008] In the present invention, each of the pair of second rollers is rotatable about an axis that is inclined upward from the lower surface at a predetermined angle as the second rollers move away from the base.

[0009] In the present invention, the mounting table further includes a guide member located above the pair of first rollers and inclined in an upward direction toward the base.

[0010] In addition, the present invention provides the driving unit, A gas pressure cylinder including an actuating part to which the mounting table is connected and a cylinder body in which the actuating part is provided, the cylinder body including a gas pressure cylinder having a first port for intake and exhaust; a second port to which compressed gas from a compressed gas source is supplied for operating the actuator; The pressure vessel includes a switching valve that selectively switches between a first flow path that connects the first port and the second port and a second flow path that opens the first port to the atmosphere. Effect of the Invention

[0011] According to the present invention, since the bag storage section, the pair of first rollers, and the pair of second rollers are provided, the bag can be placed over the tire from above, and the tire packed in the bag can be easily rotated on the platform with the opening of the bag facing downward, and therefore the orientation of the tire packed in the bag can be easily corrected manually so that the opening of the bag faces upward. This reduces the effort and labor required to correct the orientation of the bag in which the tire is packed, and improves the efficiency of the tire transport operation.

[0012] According to the present invention, the pair of second rollers can rotate about an axis that is inclined at a predetermined angle upward from the lower surface of the base as it moves away from the base, so that the tire can be placed on the base at an angle such that the center of gravity of the tire is located toward the pair of first rollers, either alone or in a state where the tire is packed in a bag. This allows the tire to be stably placed on the platform, either alone or in a state where the tire is packed in a bag, and prevents the tire and the bag from falling off the platform during transportation.

[0013] Furthermore, according to the present invention, the mounting table includes a guide member, so that even if a tire placed on the mounting table is rotated with a bag placed thereon, the bag is guided by the guide member and prevented from getting caught on the base, the pair of first rollers, etc., and the tire can be rotated smoothly while packed in the bag.

[0014] According to the present invention, the first flow path connecting the first port and the second port and the second flow path opening the first port to the atmosphere can be selectively switched by the switching valve, so that the operating unit can be driven to raise or lower the table with the tire packed in the bag placed on it. In this way, the worker can easily switch between raising and lowering the table by operating the switching valve. This improves the workability of the tire packing and transporting work. [Brief description of the drawings]

[0015] [Figure 1] FIG. 1 is a right side view showing a tire conveying device 1 according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a left side view showing a tire conveying device 1 according to an embodiment of the present invention. [Diagram 3] FIG. 1 is a front view of a tire conveying device 1 according to an embodiment of the present invention. [Figure 4] FIG. 1 is a plan view of a tire conveying device 1 according to an embodiment of the present invention. [Diagram 5] 2 is an exploded perspective view of a base 21 and a front frame 22 of the tire conveying device 1. FIG. [Figure 6] 2 is a pneumatic circuit diagram showing the configuration of a drive unit 4. FIG. [Figure 7] FIG. [Figure 8] FIG. 2 is a side view for explaining the operation of the tire conveying device 1. [Figure 9] 13 is a diagram for explaining the operation of placing a tire T and a bag T1 on a table 3 and turning them upside down. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] FIG. 1 is a side view showing a tire transport device 1 according to an embodiment of the present invention, FIG. 2 is a rear view of the tire transport device 1, FIG. 3 is a front view of the tire transport device 1 as viewed from the left side of FIG. 1, and FIG. 4 is a plan view of the tire transport auxiliary device 1. FIG. 5 is an exploded perspective view of a base 21 and a front frame 22 of the tire transport device 1. The tire transport device 1 according to this embodiment is used, for example, in a tire store to load a tire T that has been removed or purchased by an operator on a vehicle when changing or purchasing tires for a vehicle such as a passenger car. In this embodiment, the tire T is described assuming that the tire T is a tire already attached to a wheel, in which a wheel is attached to the tire body. However, this is not limited to this, and the tire transport device 1 may be used to pack only the tire body from which the wheel has been removed, by manually covering the tire T with a bag T1 by an operator using the tire transport device 1, and transport the tire T to the vehicle with the opening of the bag T facing upward. A tire T removed from a vehicle may have sand, mud, and other foreign matter adhering thereto due to driving, and even a purchased new tire T may have foreign matter such as water, oil, sand, and dust adhering thereto, even if only slightly, so when the tire T is loaded onto a vehicle and taken home, it is preferable that the tire T is packaged in a bag T1 in order to prevent the seat and other interior parts of the vehicle from becoming soiled. The bag T1 may be made of, for example, polyethylene, polypropylene, or processed paper.

[0017] The tire transport device 1 includes a base 2, a tray 43 provided on the base 2 as a storage section for storing bags T1 for packing tires T, a loading platform 3 arranged to be movable up and down along the base 2 and on which tires T packed in bags T1 can be placed in an upright position, a drive unit 4 provided on the base 2 for driving the loading platform 3 to move up and down, and a plurality of wheels 5a, 5b, 5c, 5d arranged on the base 2 to be rotatable around an axis L1 perpendicular to the underside 2a of the base 2.

[0018] The mounting table 3 includes a pair of first rollers 6a, 6b for supporting a side wall portion, also called a sidewall, of the tire T from the sides, and a pair of second rollers 7a, 7b for supporting an outer circumferential portion of the tire T from below. The first rollers 6a, 6b and the second rollers 7a, 7b may be right cylindrical and made of hard synthetic resin.

[0019] The base 2 has a hollow rectangular parallelepiped base 21 and an inverted U-shaped front frame 22 whose lower end is connected to the base 21. The base 21 has a first reinforcing member 24a and a second reinforcing member 24b, a third reinforcing member 24c connecting one ends of the first reinforcing member 24a and the second reinforcing member 24b, and a fourth reinforcing member 24d connecting the other ends of the first reinforcing member 24a and the second reinforcing member 24b. The base 21 is made of, for example, structural steel.

[0020] The wheel 5a is provided at the other end of the first reinforcing member 24a. The wheel 5b is provided at the other end of the second reinforcing member 24b. The wheel 5c is provided at one end of the first reinforcing member 24a, and the wheel 5d is provided at one end of the second reinforcing member 24b. These wheels 5a to 5d are connected by brackets 5a1 to 5d1 so as to be rotatable around the axis L1. Among these wheels 5a to 5d, the two wheels 5a and 5b arranged at the front end in the forward direction A are provided with lock levers 5a2 and 5b2 for preventing the wheels from rolling and locking them. These wheels 5a to 5d may be realized by commercially available casters. A support member 24e is connected at a right angle to the vicinity of the other end of the first reinforcing member 24a. A support member 24f is connected at a right angle to the vicinity of the other end of the second reinforcing member 24b.

[0021] The front frame 22 has a pair of support members 22a, 22b arranged in parallel and whose lower ends are connected to the fourth reinforcing member 24d of the base 21, and a connecting member 22c that connects the upper ends of the support members 22a, 22b to each other. The support members 22a, 22b and the connecting member 22c are made of, for example, structural steel.

[0022] The upper ends of the support members 24e, 24f and the pillar members 22a, 22b are connected by the cross members 24g, 24h. The other end of the first reinforcing member 24a is connected to one end of the fourth reinforcing member 24d, and the other end of the second reinforcing member 24b is connected to the other end of the fourth reinforcing member 24d. The pair of inclined members 22d, 22e connect the other ends of the cross members 24g, 24h and the vicinity of the longitudinal center of each pillar member 22a, 22b. One end of each of the cross members 24g, 24h is connected by the connecting member 24i. The side plate 32c is fixed to the third reinforcing member 24c, the support members 24e, 24f, and the connecting member 24i. The top plate 42 is fixed to the cross members 24g, 24h and the connecting member 24i.

[0023] The first reinforcing member 24a, the second reinforcing member 24b, the third reinforcing member 24c, the fourth reinforcing member 24d, the support members 24e, 24f, the horizontal members 24g, 24h, the strut members 22a, 22b, the connecting member 22c, and the inclined members 22d, 22e are made of, for example, structural steel. A bottom plate 30 is fixed to the first reinforcing member 24a and the second reinforcing member 24b. A plurality of (e.g., eight) plate-shaped weights 38 are fixed to the bottom plate 30 to position the center of gravity of the tire transport device 1 on the rear side. A side plate 32a is fixed to the first reinforcing member 24a, the support member 24e, and the horizontal member 24g, and a side plate 32b is fixed to the second reinforcing member 24b, the support member 24f, and the horizontal member 24h. The weights 38 are surrounded by the side plates 32a, 32b, 32c and the top plate 42 on the bottom plate 30, and are not exposed to the outside, improving the aesthetic appearance.

[0024] A substantially U-shaped handle 40 protruding toward the rear side shown in the direction of the arrow B is fixed to the upper part of each of the support members 22a and 22b, and a hanging hook 39 is fixed to the connecting member 22c. The handle 40 is used by an operator to grip and stably move the tire transporting device 1 when transporting a tire T using the tire transporting device 1. A bracket 41 is fixed to the rear part of the upper part of each of the support members 22a and 22b. A tray 43 is fixed to the bracket 41 by a mounting bracket (not shown). A plurality of bags T1 are stored in a folded state on the upper part of the tray 43. The bags T1 in the tray 43 are used by an operator to take out the bags T1 from the tray 43 and pack the tire T when transporting the tire T using the tire transporting device 1.

[0025] On both sides of the bracket 41, a regulator 33 and a switching valve V1 are provided.

[0026] The configuration of the mounting table 3 will be described. The mounting table 3 includes a pair of holding members 31a, 31b that hold the second rollers 7a, 7b, a pair of vertical frame members 31c, 31d that are connected to one longitudinal end of the holding members 31a, 31b, an upper frame member 31e that connects the upper ends of the vertical frame members 31c, 31d, a pair of reinforcing members 31f, 31g that are positioned parallel to the upper frame member 31e and connected to the vertical frame members 31c, 31d, and a pair of guide members 8a, 8b that are connected to the reinforcing member 31g that is located lower out of the pair of reinforcing members 31f, 31g.

[0027] The first rollers 6a, 6b are attached to the vertical frame members 31c, 31d by brackets 6a1, 6b1. Each of the pair of first rollers 6a, 6b is configured to be rotatable about an axis L2 that is inclined upward from the lower surface 2a of the base 2 at an angle θ1 as it moves away from the base 2 in a front view and is inclined toward the rear side (in the direction of the arrow B) at an angle θ2 with respect to the lower surface 2a in a side view. The angle θ1 may be, for example, 60° or more and 80° or less. The angle θ2 may be 70° to 85°. The second rollers 7a, 7b are held by the holding members 31a, 31b of the mounting table 3 so as to be rotatable about an axis L4 that forms an angle θ3 with respect to the lower surface 21a of the base 21. The angle θ3 may be, for example, 5° to 15°.

[0028] The pair of guide members 8a, 8b have first portions 8a1, 8b1 extending horizontally from the lower reinforcing member 31g, second portions 8a2, 8b2 extending and bending upward from the tip portions of the first portions 8a1, 8b1 that are furthest from the lower reinforcing member 31g, and third portions 8a3, 8b3 extending upward from the upper ends of the second portions 8a2, 8b2, slanting toward the rear.

[0029] Guide plates 32a, 32b are fixed to the holding members 31a, 31b, respectively, in order to facilitate the tire T riding up onto the second rollers 7a, 7b. The axis L3 of each of the guide plates 32a, 32b may be configured to be inclined downward at an angle θ4 of approximately 45° as it moves away outward from a virtual vertical plane including the member axes of the holding members 31a, 31b, for example.

[0030] 6 is a pneumatic circuit diagram showing the configuration of the driving unit 4. The driving unit 4 includes a gas pressure cylinder CY1 having a cylinder body 14 having an operating unit 9 to which the mounting table 3 is connected, and two ports P1 and P2 that are first ports for supplying compressed gas for operating the operating unit 9 and discharging exhaust gas from the operating unit 9, a compressed gas source 10, a first connecting pipe 11 connected to the port P1, a second connecting pipe 12 connected to the port P2, a third connecting pipe 13 to which compressed gas from the compressed gas source 10 is supplied, and a switching operation valve V1 that can selectively switch and connect the third connecting pipe 13 to either the first connecting pipe 11 or the second connecting pipe 12. The switching operation valve V1 may be a 5-port 3-position directional control valve having three ports a1, a2, and a3 and two ports b1 and b2. The switching operation valve V1, the first connecting pipe 11, the second connecting pipe 12, and the third connecting pipe 13 are included in the first port. P1, P2 and the second port a2 a first flow path connecting the first port and the second port; P1, P2 and a second flow path that opens the second flow path to the atmosphere.

[0031] In this embodiment, the gas pressure cylinder CY1 is a so-called double-acting rodless cylinder as shown in the figure, but may be a single-acting cylinder.

[0032] The compressed gas source 10 may be realized by a compressed gas supply device installed in a tire dealer's factory, for example. The compressed gas of the compressed gas source 10 can be obtained by connecting a third connection pipe 13 to a discharge port in the factory connected to the compressed gas source 10. The pressure of the compressed gas is set to be approximately equal to or slightly higher than the gas pressure used by the gas pressure cylinder CY1. The gas pressure used by the gas pressure cylinder CY1 is, for example, 800 kPa, with a target load of 45 kg, a lift of 800 mm, and a rising speed of 250 mm / sec. The compressed gas used may be compressed air or compressed nitrogen. When the compressed gas used is compressed nitrogen, the compressed gas source 10 may be a compressed nitrogen cylinder.

[0033] The drive unit 4 further includes a first speed control valve V2 interposed in the first connecting pipe 11, a second speed control valve V3 interposed in the second connecting pipe 12, a regulator 33 interposed in the third connecting pipe 13, and a filter 34 interposed between the regulator 33 of the third connecting pipe 13 and the compressed gas source 10. The first speed control valve V2 has a first flow rate control valve V21 interposed in the first connecting pipe 11 and a check valve V22 connected to the first connecting pipe 11 in parallel with the first flow rate control valve V21. The second speed control valve V3 includes a second flow rate control valve V31 interposed in the second connecting pipe 12 and a second check valve V32 connected to the second connecting pipe 12 in parallel with the second flow rate control valve V31.

[0034] When the mounting table 3 is raised, the operator operates the switching operation valve V1 to switch it from the second position to the first position, and the compressed gas in the third connecting pipe 13 is supplied to the second connecting pipe 13 through the ports a2 and b2, and is supplied to the port P2 of the gas pressure cylinder CY1 through the second flow control valve V31 and the second check valve V32. On the other hand, the compressed gas on the port P1 side in the gas pressure cylinder CY1 passes through the port P1 of the gas pressure cylinder through the first flow control valve V21 at a limited flow rate, and is further discharged to the atmosphere through the ports b1 and a1 of the switching operation valve V1. In this way, the operating unit 9 rises. The rising of the operating unit 9 causes the mounting table 3 to rise. When the mounting table 3 reaches a desired height position, the operator operates the switching operation valve V1 to switch it from the first position to the neutral position, and stops the rising operation of the mounting table 3. This makes it possible to prevent the mounting table 3 from rising suddenly and to raise it smoothly to a desired position.

[0035] When the operator operates the switching valve V1 to lower the stage 3, the port a2 and the port b1 are connected, and the compressed gas of the third connecting pipe 13 is supplied to the first connecting pipe 11. 1 The compressed gas supplied to the gas pressure cylinder CY1 is supplied to the port P1 of the gas pressure cylinder CY1 via the first flow control valve V21 and the check valve V22. CY1The gas flows from port P2 of the second flow control valve V31, and then passes through ports b2 and a3 of the switching operation valve V1, and is released into the atmosphere. In this manner, the operating unit 9 descends. The lowering of the operating unit 9 causes the mounting table 3 to descend. stand When the loader 3 reaches the lowest position, the operator operates the switching valve V1 to switch it from the second position to the neutral position, and the loader 3 is placed in the neutral position. stand This stops the lowering operation of the mounting table 3. This makes it possible to prevent the mounting table 3 from lowering abruptly and to lower the mounting table 3 smoothly to the lowest position.

[0036] 7 is an enlarged side view of the mounting table 3. In the mounting table 3, holding members 31a, 31b and vertical frame members 31c, 31d are connected by shafts 35a, 35b so as to be angularly displaceable. Torsion springs 36a, 36b are attached to the shafts 35a, 35b, respectively. One end of the torsion springs 36a, 36b is engaged with the holding members 31a, 31b. The other end of the torsion springs 36a, 36b is engaged with the vertical frame members 31c, 31d.

[0037] By such torsion springs 36a, 36b, each of the holding members 31a, 31b, together with the second rollers 7a, 7b, is spring-biased in a direction of upward angular displacement as shown by the imaginary line in Fig. 7. As a result, even if the mounting table 3 is lowered in a state where no tire T or bag T1 is placed on the mounting table 3, i.e., in a state where no downward load is applied to each of the holding members 31a, 31b, the mounting table 3 is prevented from contacting the feet of the worker, improving safety.

[0038] In another embodiment of the present invention, the holding members 31a, 31b may be connected to the vertical frame members 31c, 31d so as to be angularly displaceable about the axis of the shafts 35a, 35b without using the torsion springs 36a, 36b, and the end faces of the base ends of the holding members 31a, 31b may be supported by the vertical frame members 31c, 31d as shown in Fig. 7. With this configuration, even if an object such as a worker's foot enters below the holding members 31a, 31b, the holding members 31a, 31b are angularly displaced upward about the axis of the shafts 35a, 35b by the object, preventing damage to the holding members 31a, 31b and the object.

[0039] FIG. 8 is a side view for explaining the operation of the tire transport device 1, in which FIG. 8(1) shows a state in which the bag T1 is placed on the tire T placed on the mounting table 3, and FIG. 8(2) shows a state in which the tire T and the bag T1 are inverted on the mounting table 3 so that the opening faces upward. FIG. 9 is a diagram for explaining the operation of placing the tire T and the bag T1 on the mounting table 3 and inverting them upside down. FIG. 9(1) shows a state in which the tire T on the mounting table 3 is placed on the mounting table 3, FIG. 9(2) shows a state in the middle of placing the bag T1 on the tire T on the mounting table 3, FIG. 9(3) shows a state in which the bag T1 has been placed on the tire T on the mounting table 3, FIG. 9(4) shows a state in the middle of rotating the tire T and the bag T1 on the second rollers 7a and 7b with the tire T packed in the bag T1, and FIG. 9(5) shows a state in which the tire T and the bag T1 have been rotated to a position in which the opening of the bag T1 faces upward.

[0040] When the tire T is packed in the bag T1, the tire T is placed on the placement table 3 of the tire transport device 1. At this time, the placement table 3 may be in a raised state as shown in FIG. 8(1) and FIG. 8(2) when the tire T is in a high position, for example, when placed on a shelf, or may be lowered to the lowest position along the support members 22a, 22b when placed on a factory floor. The worker places the tire T in an upright state on the placement table 3 as shown in FIG. 9(1). When the tire T is placed on the placement table 3, the outer periphery of the tire T is supported by the second rollers 7a, 7b, and the side of the tire T is supported from the side by the first rollers 6a, 6b.

[0041] Next, as shown in Fig. 8(1), when the table 3 is raised or lowered to the lowest position, the bag T1 taken out from the tray 43 is placed from above over the tire T placed on the table 3, and as shown in Fig. 8(2) and Fig. 9(3), the bag T1 is pulled down until it reaches the second rollers 7a and 7b, so that the bag T1 completely covers the tire T. When the bag T1 is fully covered over the tire T on the table 3 in this way, the worker manually rotates the tire T and the bag T1 on the table 3 as shown in Fig. 9(4), and packs the tire T in the bag T1 as shown in Fig. 9(5), and can transport it by pushing it manually.

[0042] According to this embodiment, the bag T1 is accommodated in the tray 43, and the pair of first rollers 6a, 6b and the pair of second rollers 7a, 7b are provided, so that the bag T1 taken out from the tray 43 is placed over the tire T from above, and the tire T and the bag T1 can be easily rotated and packed on the first rollers 6a, 6b and the second rollers 7a, 7b of the mounting table 3 with the opening of the bag T1 facing downward, and therefore the orientation of the bag T1 can be easily manually corrected so that the opening faces upward. This reduces the effort and labor required to correct the orientation of the bag T1 in which the tire T is packed, and improves the efficiency of the conveying operation including the packing operation of the tire T.

[0043] According to this embodiment, the pair of second rollers 7a, 7b can rotate about an axis L4 inclined at an angle θ3 with respect to the lower surface 2a of the base 2 as they move away from the base 2 in a side view, so that the tire T can be stably mounted on the base 2 by tilting the tire T so that the center of gravity of the tire T is located toward the pair of first rollers 6a, 6b, either alone or in a state where the tire T is packed in a bag T1. This allows the tire T to be stably mounted on the mounting table 3, either alone or in a state where the tire T is packed in a bag T1, and prevents the tire T and the bag T1 from falling off the mounting table 3 during transportation.

[0044] Furthermore, according to this embodiment, the mounting table 3 includes a guide member 8, so even if the tire T placed on the mounting table 3 is rotated with the bag T1 covering it, the bag T1 is guided by the guide member 8 and prevented from getting caught on the base 2 and the pair of first rollers 6a, 6b, etc., and the tire T can be easily packed in the bag T1.

[0045] According to this embodiment, the first port P1, P2 and the second port a2 a first flow path connecting the first port and the second port; P1, P2 Since the first flow path, which opens the tire T to the atmosphere, can be selectively switched by the switching valve V1, the operating unit 9 can be driven to raise or lower the table 3 with the tire T packed in the bag T1 placed on it. In this way, the worker can easily switch between raising and lowering the table 3 by operating the switching valve V1. This can improve the workability of the packing and transporting of the tire T.

[0046] Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, and various modifications and improvements are possible within the scope of the gist of the present invention. It goes without saying that all or part of the components of each of the above-mentioned embodiments can be appropriately combined within the scope of not contradicting each other. [Explanation of symbols]

[0047] 1 Tire transport device 2 Base 3. Placement table 4 Drive unit 2a Bottom side 5;5a,5b,5c,5d Wheels 6a, 6b First roller 7a, 7b Second roller 8 Guide member 9. Operating Part 10 Compressed Gas Sources 11 First connecting pipe 12 Second connecting pipe 13 Third connecting pipe 14 Cylinder body 21 Base 22 Frame 22a, 22b Support member 22c Connecting member 22d, 22e Inclined member 24g,24h Horizontal member 31a, 31b Holding member 31c, 31d Vertical frame members 31e Upper frame member 31f, 31g Reinforcement members 33 Regulator 34 Filters 35a,35b axis 36a, 36b Torsion spring 40 Handle 41 Bracket 43 Tray L1,L2,L3,L4 Axis CY1 Gas Pressure Cylinder P1,P2 ports T Tire T1 bag V1 Switching valve V2 First speed control valve V21 First flow control valve V22 No. 1 check valve V3 Second speed control valve V31 Second flow control valve V32 Second check valve

Claims

1. The base and a storage section provided on the base and configured to store a bag for packaging a tire; a placement table that is arranged to be able to rise and fall along the base and on which the tire packed in the bag can be placed in an upright state; a drive unit provided on the base for driving the mounting table to move up and down; A plurality of wheels are provided on the base so as to be rotatable about an axis perpendicular to a lower surface of the base, The mounting table is a pair of first rollers for supporting sides of the tire packed in the bag from the sides; and a pair of second rollers for supporting from below an outer circumferential portion of the tire packed in the bag.

2. 2. The tire transport device according to claim 1, wherein each of the pair of second rollers is rotatable about an axis that is inclined upward from the lower surface at a predetermined angle as the pair of second rollers moves away from the base.

3. 3. The tire transport device according to claim 1, wherein the mounting table further includes a guide member located above the pair of first rollers and inclined in an upward direction toward the base.

4. The drive unit is A gas pressure cylinder including an actuating part to which the mounting table is connected and a cylinder body in which the actuating part is provided, the cylinder body including a gas pressure cylinder having a first port for intake and exhaust; a second port to which compressed gas from a compressed gas source is supplied for operating the actuator; 3. The tire transport device according to claim 1, further comprising a switching valve configured to selectively switch between a first flow path connecting the first port and the second port and a second flow path opening the first port to the atmosphere.

Images