Tire conveyance device

Abstract

To provide a tire conveyance device that reduces the effort and labor required for the tire packaging work.SOLUTION: A tire conveyance device 1 comprises: a base 2; a tray 43 which is provided on the base 2 and accommodates a bag T1 for packaging a tire T; a mounting platform 3 which is provided on the base 2 so as to be vertically movable and on which the tire T can be mounted in an upright position; a drive unit 4 for vertically moving the mounting platform 3; and a plurality of wheels 5a, 5b, 5c, 5d which are rotatably provided on the base 2 around a first axis L1 perpendicular to the lower surface 2a of the base 2. The mounting platform 3 includes a pair of first rollers 6a, 6b for supporting the side portions of the tire T from the lateral sides, and a pair of second rollers 7a, 7b for supporting the outer circumferential portion of the tire T from below.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a tire conveying device for an operator to pack and convey automobile tires.

Background Art

[0002] Typical prior art is described in, for example, Patent Document 1. In this prior art, a tire lifter used for attaching and detaching tires of a lifted vehicle is described. The tire lifter has a support portion for supporting a tire and a lifting mechanism for supporting the support portion so as to be movable up and down. The lifting mechanism includes a winding drum that raises the support portion by winding a wire rope extending from the support portion side, and a biasing means for biasing the winding drum in the winding direction.

[0003] Another prior art is described in, for example, Patent Document 2. In this prior art, a wheel dolly for vehicle maintenance including a movable base frame and a wheel rack provided on the base frame so as to be movable up and down is described. The wheel dolly is configured to be movable up and down so that the set height can be adjusted according to the body shape of each operator and the diameter of different wheels with the wheels detached from the vehicle placed on the wheel rack. The set height is set to a height that does not apply a load to the bearing between the housing that houses drive members such as the drive shaft of the vehicle and the wheel. The wheel rack is configured to be tiltable, and a working space is secured so that the operator can face the center of the wheel from the front, and the wheel is detached while the vehicle is lifted up to a position of the axle so that the operator can work in a natural standing posture.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the prior art of Patent Documents 1 and 2, when, after changing the tires of one's own vehicle, the wheel-mounted tire removed from the vehicle is mounted on one's own vehicle and taken home, for example, in order to prevent the wheel-mounted tire from damaging the vehicle interior equipment, the wheel-mounted tire removed from the vehicle may be mounted on one's own vehicle in a state of being housed in a resin bag such as polyethylene or polypropylene. Since foreign matters such as sand and mud adhering to the wheel-mounted tire fall inside the bag, it is necessary to rotate the wheel-mounted tire together with the bag so that the opening of the bag is positioned upward. The rotation operation of the wheel-mounted tire after being housed in such a bag is manually performed by an operator, which requires time and effort for the operation of transporting the tire to the vehicle. Therefore, there is a need for a tire transport device that can easily pack the wheel-mounted tire and smoothly transport it to the vehicle in a posture with the opening facing upward.

[0006] An object of the present invention is to provide a tire transport device that can easily pack a tire and smoothly transport it.

Means for Solving the Problems

[0007] The present invention includes a base, a storage portion provided on the base and storing a bag for packing a tire, a mounting table disposed so as to be movable up and down along the base and capable of mounting the tire packed in the bag in an upright state, a drive portion provided on the base for driving the mounting table to move up and down, a plurality of wheels rotatably disposed on the base about an axis perpendicular to the lower surface of the base, and the mounting table, a pair of first rollers for supporting the side portion of the tire packed in the bag from the side, A tire conveying device, comprising a pair of second rollers for supporting an outer peripheral portion of a tire packed in the bag from below.

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

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

[0010] Further, in the present invention, the drive unit is a gas pressure cylinder including an operating portion to which the mounting table is connected and a cylinder body in which the operating portion is provided. The cylinder body is a gas pressure cylinder having a first port for intake and exhaust, a second port to which compressed gas from a compressed gas source for operating the operating portion is supplied, and a switching operation valve that selectively switches between a first flow path connecting the first port and the second port and a second flow path that opens the first port to the atmosphere.

Advantages of the Invention

[0011] According to the present invention, since it includes a housing portion for housing the bag, a pair of first rollers, and a pair of second rollers, it is possible to easily rotate the tire packed in the bag on the mounting table with the bag covering the tire from above and the opening of the bag facing downward. Therefore, it is possible to easily correct the orientation of the tire manually in a state where the tire is packed in the bag so that the opening of the bag faces upward. As a result, the labor and effort required to correct the orientation of the bag in which the tire is packed are reduced, and the efficiency of the tire conveying operation can be improved.

[0012] Further, according to the present invention, since the pair of second rollers are rotatable about an axis inclined upward at a predetermined angle from the lower surface of the base as they move away from the base, the tire can be inclined and mounted so that the center of gravity of the tire is located on the side of the pair of first rollers, either alone or in a state where the tire is packed in a bag. As a result, the tire can be stably mounted on the mounting table, either alone or in a state where the tire is packed in a bag, and the tire and the bag can be prevented from falling off the mounting table during transportation.

[0013] Further, according to the present invention, since the mounting table includes a guiding member, even when the tire mounted on the mounting table is rotated with a bag covering it, the bag is guided by the guiding member and is prevented from being caught by the base and the pair of first rollers, etc., and the tire can be smoothly rotated in a state where it is packed in a bag.

[0014] Further, according to the present invention, since 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 a switching operation valve, the operating portion can be driven to raise or lower the mounting table with a tire packed in a bag mounted thereon. In this way, the operator can easily switch the lifting and lowering operation of the mounting table by operating the switching operation valve. As a result, the workability of the tire packing and transporting work can be improved.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0016] FIG. 1 is a side view showing a tire conveying device 1 according to an embodiment of the present invention, FIG. 2 is a rear view of the tire conveying device 1, FIG. 3 is a front view of the tire conveying device 1 as viewed from the left side of FIG. 1, and FIG. 4 is a plan view of the tire conveying auxiliary device 1. FIG. 5 is an exploded perspective view of the base 21 and the front frame 22 of the tire conveying device 1. The tire conveying device 1 of the present embodiment is used, for example, in a tire store when a worker loads a removed or purchased tire T onto a vehicle during tire replacement or purchase of a vehicle such as a passenger car. In the present embodiment, the tire T is described assuming a wheel-attached tire in which a wheel is attached to the tire body, but it is not limited to this. Even if it is only the tire body with the wheel removed, the worker can manually cover the tire T with the bag T1 and pack it, and the tire T may be used to convey it to the vehicle with the opening of the bag T facing upward. The tire T removed from the vehicle may have sand, mud, or other foreign substances attached due to running, and even if it is a newly purchased tire T, there may be foreign substances such as water, oil, sand, and dust attached, even if only slightly. Therefore, when loading it onto the vehicle and taking it home, in order to prevent soiling inside the vehicle such as the seat, it is preferable that the tire T is housed and packed in the bag T1. The bag T1 may be made of, for example, polyethylene, polypropylene, or processed paper.

[0017] The tire conveying device 1 includes a base 2, a tray 43 which is provided on the base 2 and is a storage part for storing a bag T1 for packing the tire T, a mounting table 3 which is arranged to be movable up and down along the base 2 and on which the tire T packed in the bag T1 can be placed in an upright state, a driving part 4 which is provided on the base 2 and drives the mounting table 3 to move up and down, and a plurality of wheels 5a, 5b, 5c, 5d which are arranged on the base 2 to be rotatable about an axis L1 perpendicular to the lower surface 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 side, and a pair of second rollers 7a, 7b for supporting the outer peripheral portion of the tire T from below. The first rollers 6a, 6b and the second rollers 7a, 7b may be straight cylindrical bodies made of a hard synthetic resin.

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

[0020] A wheel 5a is provided at the other end portion of the first reinforcing member 24a. A wheel 5b is provided at the other end portion of the second reinforcing member 24b. A wheel 5c is provided at one end portion of the first reinforcing member 24a, and a wheel 5d is provided at one end portion of the second reinforcing member 24b. Each of these wheels 5a to 5d is rotatably connected about the axis L1 by brackets 5a1 to 5d1. Lock levers 5a2, 5b2 for preventing the wheels from rolling and setting them in a locked state are provided on two wheels 5a, 5b arranged at the front end in the forward direction A among these wheels 5a to 5d. These wheels 5a to 5d may be realized by commercially available casters. A support member 24e is connected at a right angle near the other end portion of the first reinforcing member 24a. A support member 24f is connected at a right angle near the other end portion of the second reinforcing member 24b.

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

[0022] The upper ends of the respective support members 24e and 24f and the respective column members 22a and 22b are connected by cross members 24g and 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 and 22e connect the other ends of the cross members 24g and 24h and the vicinity of the longitudinal center of each of the column members 22a and 22b. One ends of the cross members 24g and 24h are connected by a connecting member 24i. A side plate 32c is fixed to the third reinforcing member 24c, the support members 24e and 24f, and the connecting member 24i. A top plate 42 is fixed to the cross members 24g and 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 and 24f, the cross members 24g and 24h, the column members 22a and 22b, the connecting member 22c, and the inclined members 22d and 22e are made of, for example, structural steel materials. A bottom plate 30 is fixed to the first reinforcing member 24a and the second reinforcing member 24b. A plurality (for example, eight) of plate-shaped weights 38 are fixed to the bottom plate 30 in order to shift the center of gravity of the tire conveying device 1 to the rear side. A side plate 32a is fixed to the first reinforcing member 24a, the support member 24e, and the cross member 24g, and a side plate 32b is fixed to the second reinforcing member 24b, the support member 24f, and the cross member 24h. The plurality of weights 38 are surrounded by the side plates 32a, 32b, 32c, and the top plate 42 on the bottom plate 30, so that the plurality of weights 38 are not exposed to the outside, improving the appearance.

[0024] On the upper parts of the respective support members 22a and 22b, a substantially U-shaped handle 40 protruding toward the rear side in the direction of arrow B is fixed, and a suspension hook 39 is fixed to the connecting member 22c. This handle 40 is used for an operator to grip and stably move the tire transfer device 1 when transferring the tire T using the tire transfer device 1. Brackets 41 are fixed to the rear surfaces of the upper parts of the respective support members 22a and 22b. A tray 43 is fixed to the brackets 41 by mounting fittings (not shown). A plurality of bags T1 are accommodated in a folded state on the upper part of the tray 43. The bags T1 in the tray 43 are used to take out the bags T1 from the tray 43 and pack the tire T when the operator transfers the tire T by the tire transfer device 1.

[0025] A regulator 33 and a switching operation valve V1 are provided on both side portions of the bracket 41.

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

[0027] The first rollers 6a and 6b are attached to the vertical frame members 31c and 31d by brackets 6a1 and 6b1. Each of the pair of first rollers 6a and 6b is configured to be rotatable about an axis L2 that inclines upward at an angle θ1 from the lower surface 2a of the base 2 as it moves away from the base 2 in a front view, and inclines toward the rear side (in the direction of 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. Also, the angle θ2 may be 70° to 85°. Further, the second rollers 7a and 7b are held by the holding members 31a and 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 portion 21. The angle θ3 may be, for example, 5° to 15°.

[0028] The pair of guide members 8a and 8b includes a first portion 8a1 and 8b1 that extends horizontally from the lower reinforcing member 31g, a second portion 8a2 and 8b2 that extends upward and bends from the tip end that is farthest from the lower reinforcing member 31g of the first portion 8a1 and 8b1, and a third portion 8a3 and 8b3 that extends from the upper end portion of the second portion 8a2 and 8b2 and inclines toward the rear side upward.

[0029] Guide plates 32a and 32b are fixed to the respective holding members 31a and 31b to smooth the mounting of the tire T onto the second rollers 7a and 7b. The axis L3 of each guide plate 32a and 32b may be configured to incline downward at an angle θ4 of about 45° as it moves away from the virtual vertical plane including the member axis of the holding members 31a and 31b outward, for example.

[0030] FIG. 6 is a pneumatic circuit diagram showing the configuration of the drive unit 4. The drive unit 4 includes a gas pressure cylinder CY1 having a cylinder body 14 with an operating unit 9 to which the mounting table 3 is connected, and two ports P1 and P2 which are the first ports for supplying compressed gas for operating the operating unit 9 and discharging the exhaust gas of 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 the compressed gas from the compressed gas source 10 is supplied, and a switching operation valve V1 capable of selectively switching and connecting the third connecting pipe 13 to either one of the first connecting pipe 11 and the second connecting pipe 12. The switching operation valve V1 may be a 5-port 3-position direction adjustment valve having three ports a1, a2, a3 and two ports b1, b2. The first flow path connecting the first port and the second port and the second flow path opening the first port to the atmosphere are configured including these switching operation valve V1, the first connecting pipe 11, the second connecting pipe 12, and the third connecting pipe 13.

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

[0032] The compressed gas source 10 may be realized by, for example, a compressed gas supply device installed in a factory of a tire store. The compressed gas of the compressed gas source 10 can be obtained by connecting the third connecting pipe 13 to the 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 in the gas pressure cylinder CY1. The gas pressure used in the gas pressure cylinder CY1 is, for example, 800 kPa, the target load is 45 kg, the stroke is 800 mm, and the rising speed is 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 connection pipe 11, a second speed control valve V3 interposed in the second connection pipe 12, a regulator 33 interposed in the third connection pipe 13, and a filter 34 interposed between the regulator 33 in the third connection pipe 13 and the compressed gas source 10. The first speed control valve V2 has a first flow control valve V21 interposed in the first connection pipe 11 and a check valve V22 connected in parallel with the first flow control valve V21 in the first connection pipe 11. The second speed control valve V3 includes a second flow control valve V31 interposed in the second connection pipe 12 and a second check valve V32 connected in parallel with the second flow control valve V31 in the second connection pipe 12.

[0034] When raising the mounting table 3, when an operator operates the switching operation valve V1 and switches it from the second position to the first position, the compressed gas in the third connection pipe 13 is supplied to the second connection 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 first flow control valve V21 from the port P1 of the gas pressure cylinder at a restricted flow rate, and is further discharged to the atmosphere through the port b1 and port a1 of the switching operation valve V1. In this way, the operating unit 9 rises. When the operating unit 9 rises, the mounting table 3 rises. When the mounting table 3 reaches the desired height position, the operator operates the switching operation valve V1 and switches it from the first position to the neutral position to stop the rising operation of the mounting table 3. As a result, the mounting table 3 can be smoothly raised to the desired position while suppressing a rapid rise.

[0035] Also, when lowering the mounting table 3, when an operator operates the switching operation valve V1 to switch from the neutral position to the second position, port a2 and port b1 are connected, and the compressed gas in the third connecting pipe 13 is supplied to the first connecting pipe 11. The compressed gas supplied to the first connecting pipe 12 is supplied to the port P1 of the gas pressure cylinder CY1 via the first flow control valve V21 and the check valve V22. On the other hand, the compressed gas on the port P2 side in the gas pressure cylinder CY1 is discharged to the atmosphere from the port P2 of the gas pressure cylinder via the second flow control valve V31, and further via the port b2 and port a3 of the switching operation valve V1. In this way, the operating part 9 descends. When the operating part 9 descends, the mounting table 3 descends. When the mounting table reaches the lowest position, the operator operates the switching operation valve V1 to switch from the second position to the neutral position, and stops the descending operation of the mounting table. Thereby, the mounting table 3 can be smoothly lowered to the lowest position while suppressing a sudden descent.

[0036] Figure 7 is an enlarged side view of the mounting table 3. The mounting table 3 has holding members 31a, 31b and vertical frame members 31c, 31d connected to be angularly displaceable about shafts 35a, 35b. Torsion springs 36a, 36b are respectively mounted on the shafts 35a, 35b. One end of each of the torsion springs 36a, 36b is locked to the holding members 31a, 31b. The other ends of the torsion springs 36a, 36b are locked to 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 the direction of angular displacement upward as shown by the phantom line in Figure 7. Thereby, even when the mounting table 3 is lowered in a state where the tires T and the bags T1 are not mounted on the mounting table 3, that is, in a state where no downward load acts on each of the holding members 31a, 31b, contact of the mounting table 3 with the operator's foot is prevented, and safety is improved.

[0038] In another embodiment of the present invention, each holding member 31a, 31b is connected to the vertical frame members 31c, 31d so as to be angularly displaceable about the axes of the shafts 35a, 35b without using the torsion springs 36a, 36b described above, and each end face of the base end portion of each holding member 31a, 31b is supported by the vertical frame members 31c, 31d as shown in FIG. 7. According to such a configuration, even if an object such as an operator's foot enters below the holding members 31a, 31b, the holding members 31a, 31b are angularly displaced upward about the axes of the shafts 35a, 35b by the object, and damage to the holding members 31a, 31b and the object is prevented.

[0039] FIG. 8 is a side view for explaining the operation of the tire conveying device 1. FIG. 8(1) shows a state in which the tire T mounted on the mounting table 3 is covered with the bag T1, and FIG. 8(2) shows a state in which the tire T and the bag T1 on the mounting table 3 are inverted so that the opening faces upward. FIG. 9 is a diagram for explaining the operation of mounting the tire T and the bag T1 on the mounting table 3 and inverting them vertically. FIG. 9(1) shows a state in which the tire T is mounted on the mounting table 3, FIG. 9(2) shows an intermediate state in which the bag T1 is being put on the tire T on the mounting table 3, FIG. 9(3) shows a state in which the bag T1 has been completely put on the tire T on the mounting table 3, FIG. 9(4) shows an intermediate state in which the tire T and the bag T1 are rotated on the second rollers 7a, 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 where the opening of the bag T1 faces upward.

[0040] When packing the tire T in the bag T1, the tire T is mounted on the mounting table 3 of the tire conveying device 1. At this time, when the mounting table 3 is at a high position such that the tire T is placed, for example, on a shelf or the like, it may be in the raised state as shown in FIGS. 8(1) and 8(2), or when it is placed on the floor of a factory or the like, it may be lowered to the lowest position along the support members 22a, 22b. The operator mounts the tire T on the mounting table 3 in the standing state as shown in FIG. 9(1). In the state where the tire T is mounted on the mounting table 3, the outer peripheral portion of the tire T is supported by the second rollers 7a, 7b, and the side portion of the tire T is supported laterally by the first rollers 6a, 6b.

[0041] Next, as shown in Fig. 8(1), in a state where the mounting table 3 is raised or in a state where it is lowered to the lowest position, the bag T1 taken out from the tray 43 is placed over the tire T mounted on the mounting table 3 from above. As shown in Figs. 8(2) and 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 sufficiently covers the tire T on the mounting table 3 in this way, the operator manually rotates the tire T and the bag T1 on the mounting table 3 as shown in Fig. 9(4), and as shown in Fig. 9(5), the tire T is packed in the bag T1 and can be transported by hand pushing.

[0042] According to the present embodiment, since the tray 43 which is a housing part for housing the bag T1, the pair of first rollers 6a and 6b, and the pair of second rollers 7a and 7b are provided, the bag T1 taken out from the tray 43 is placed over the tire T from above, and with the opening of the bag T1 facing downward, the tire T and the bag T1 can be easily rotated on the first rollers 6a and 6b and the second rollers 7a and 7b of the mounting table 3 for packing. Therefore, the orientation of the bag T1 can be easily corrected manually so that the opening faces upward. As a result, the labor and effort required for the work of correcting the orientation of the bag T1 in which the tire T is packed are reduced, and the efficiency of the transport work including the packing work of the tire T can be improved.

[0043] Also according to the present embodiment, since the pair of second rollers 7a and 7b can rotate around 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, the tire T alone or in a state where the tire T is packed in the bag T1 can be inclined so that the center of gravity of the tire T is located on the side of the pair of first rollers 6a and 6b and can be stably mounted. As a result, the tire T alone or in a state where it is packed in the bag T1 is stably mounted on the mounting table 3, and the tire T and the bag T1 are prevented from falling off the mounting table 3 during transportation.

[0044] Also, according to the present embodiment, since the mounting table 3 includes the guide member 8, even when 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 is prevented from being caught by the base 2 and the pair of first rollers 6a and 6b, etc., and the tire T can be easily packed in the bag T1.

[0045] Also, according to the present embodiment, since the first flow path connecting the first port P1 and the second port P2 and the second flow path opening the first port P to the atmosphere can be selectively switched by the switching operation valve V1, the operating unit 9 can be driven to raise or lower the mounting table 3 with the tire T packed in the bag T1 mounted thereon. In this way, the operator can easily switch the lifting and lowering operation of the mounting table 3 by operating the switching operation valve V1. Thereby, the workability of the packing work and the conveying work of the tire T can be improved.

[0046] As described above, the embodiments of the present invention have been described in detail. However, the present invention is not limited to the above-described embodiments, and various changes and improvements can be made without departing from the gist of the present invention. Needless to say, all or part of each of the above embodiments can be combined as appropriate within a non-contradictory range.

Explanation of Reference Numerals

[0047] 1 Tire conveying device 2 Base 3 Mounting table 4 Driving unit 2a Bottom surface 5;5a,5b,5c,5d Wheels 6a,6b First rollers 7a,7b Second rollers 8 Guide member 9 Operating unit 10 Compressed gas source 11 First connecting pipe 12 Second connecting pipe 13 Third connecting pipe 14 Cylinder body 21 Base portion 22 Frame body Support members 22a, 22b Connecting member 22c Inclined members 22d, 22e Horizontal members 24g, 24h Holding members 31a, 31b Vertical frame members 31c, 31d Upper frame member 31e Reinforcing members 31f, 31g Regulator 33 Filter 34 Shafts 35a, 35b Torsion springs 36a, 36b Handle 40 Bracket 41 Tray 43 Axes L1, L2, L3, L4 Gas pressure cylinder CY1 Ports P1, P2 Tire T Bag T1 Switching operation valve V1 First speed control valve V2 First flow control valve V21 First check valve V22 Second speed control valve V3 Second flow control valve V31 Second check valve V32

Claims

1. A base, a housing portion provided on the base and housing a bag for packing a tire, a mounting table disposed to be movable up and down along the base and capable of mounting the tire packed in the bag in an upright state, a driving portion provided on the base for driving the mounting table to move up and down, a plurality of wheels rotatably disposed on the base about an axis perpendicular to the lower surface of the base, and comprising, the mounting table, a pair of first rollers for supporting the side portion of the tire packed in the bag from the side, a pair of second rollers for supporting the outer peripheral portion of the tire packed in the bag from below, and a tire conveying device characterized by comprising the same.

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

3. The tire conveying device according to claim 1 or 2, wherein the mounting table further includes a guiding member located above the pair of first rollers and inclined in a direction approaching the base upward.

4. The driving portion, a gas pressure cylinder including an operating portion to which the mounting table is connected and a cylinder body in which the operating portion is provided, the cylinder body being a gas pressure cylinder having a first port for suction and exhaust, a second port to which compressed gas from a compressed gas source for operating the operating portion is supplied, a switching operation valve for selectively switching a first flow path connecting the first port and the second port and a second flow path for opening the first port to the atmosphere, and the tire conveying device according to claim 1 or 2 characterized by comprising the same.

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