JP7322481B2 - Dolly for transporting reels - Google Patents

Description

The present invention relates to a carriage for transporting reels.

A tire is constructed by combining a large number of constituent members such as a tread and sidewalls. In tire manufacturing, parts are prepared for these components. Among these parts are parts that are provided in sheet form, for example parts for belts. A reel is used to transport a sheet-like component (hereinafter referred to as sheet material).

The reel has a pair of flanges and a drum positioned between the flanges. The aforementioned sheet material is wound onto a drum. The flange is disc-shaped and the reel is rollable.

A trolley is used to transport the reel. The mass of the reel wound with the sheet material is 60 to 120 kg. The reel is heavy, and the load when loading the reel onto the truck is large. In order to reduce the burden on workers and improve work efficiency, various studies have been made on devices for transporting reels (for example, Patent Document 1 below).

JP-A-11-199137

A slope is provided between the road surface and the truck when the reel is loaded onto the truck. This slope is configured by, for example, setting the plate at an angle. As mentioned earlier, reels are heavy. Therefore, even if a slope is used, it is not easy to load the reel onto the truck.

Setting the inclination of the plate loosely reduces the burden of loading work. However, setting a gentle slope requires a certain amount of space.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cart for transporting reels that can reduce the burden of loading work.

A reel transport truck according to an aspect of the present invention is a truck for transporting reels, which includes a pair of disc-shaped flanges and a drum positioned between the flanges. The carriage includes a body frame, a mounting module fixed to the body frame and on which the reel is mounted, and positioned outside the mounting module in the width direction of the carriage , and the reel is mounted on the mounting module. a guidance module for guiding. The guide module includes a support shaft fixed to the body frame and extending in the longitudinal direction of the truck , and a main plate rotatably supported by the support shaft about the support shaft. The main plate is inclined with respect to the width direction of the bogie . When the reel is placed on the main plate from the outside in the width direction of the carriage and the reel is moved inward, the main plate rotates.

Preferably, in this reel carriage, the inclination angle of the main plate after rotation is smaller than the inclination angle of the main plate before rotation.

Preferably, in this reel carriage, the difference between the inclination angle of the main plate before rotation and the inclination angle of the main plate after rotation is 5° or more and 15° or less.

Preferably, in this reel carriage, the inclination angle of the main plate before rotation is 15° or more and 25° or less.

Preferably, in this reel carrier, said guide module comprises a return unit. The return unit includes a support plate that rotates together with the main plate, and a spring that bridges the body frame and the support plate.

Preferably, in this reel transport truck, the guide module includes a sub-plate positioned outside the main plate in the width direction of the truck . The sub-plate is fixed to the body frame while being inclined with respect to the width direction of the bogie .

Preferably, in this reel carriage, the inclination angle of the sub- plate is the same as the inclination angle of the main plate before rotation.

According to the reel transport truck of the present invention, the burden of reel loading work is reduced.

FIG. 1 is a side view showing a carriage for carrying reels according to one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line II--II of FIG. FIG. 3 is an explanatory view showing an outline of a guide module for guiding reels to the placement module. FIG. 4 is an explanatory diagram showing an overview of a guide module in a reel transporting cart according to another embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

1 and 2 show an example of a reel-transporting cart 2 (hereinafter also referred to as a cart 2) according to an embodiment of the present invention. In FIG. 1, the left-right direction is the longitudinal direction of the carriage 2 (hereinafter sometimes simply referred to as the "longitudinal direction") . The direction perpendicular to the plane of the paper is the width direction of the carriage 2 (hereinafter sometimes simply referred to as the "width direction") . In FIG. 2 , the horizontal direction is the width direction of the truck 2 . The direction perpendicular to the plane of the paper is the longitudinal direction of the carriage 2 . A double arrow in FIG. 1 indicates the longitudinal direction of the truck 2 . A double arrow in FIG. 2 indicates the width direction of the truck 2 .

In FIG. 2 , the dashed-dotted line CL is the center line of the truck 2 in the width direction. The carriage 2 has a symmetrical configuration with respect to the widthwise center line CL.

This truck 2 carries the reel R. The reel R includes a pair of flanges F and a drum D. Each flange F is disc-shaped. A drum D is located between the two flanges F. The drum D is cylindrical. A flange F extends radially outwardly from the end of the drum D. As shown in FIG. The outer edge of the flange F is located outside the outer peripheral surface of the drum D in the radial direction of the reel R. A flange F protrudes from the drum D. This reel R is rollable.

Although not shown, a sheet material is wound around the drum D of the reel R. As shown in FIG. The sheet material includes a large number of parallel cords. The cord is covered with a topping rubber. The cord material is steel. This sheet material is a part of a belt as a component of a tire.

The carriage 2 comprises a body frame 4 , wheels 6 , mounting modules 8 and guide modules 10 . The body frame 4 holds elements such as wheels 6, a mounting module 8, a guide module 10 and the like. Although not described in detail, the body frame 4 is made up of parts such as bars and plates. The structure of the main body frame 4 is not particularly limited, and the structure can be properly arranged in consideration of the specifications of the truck 2 and the like.

Wheels 6 are fixed to body frame 4 . Wheels 6 are positioned between road surface G and body frame 4 . Since the truck 2 is supported on the road surface G via the wheels 6, it can freely travel on the road surface G.

The mounting module 8 is fixed to the body frame 4 . This mounting module 8 is provided at the bottom of the body frame 4 .

A reel R is mounted on the mounting module 8 . In this carriage 2, the configuration of the mounting module 8 is not particularly limited as long as the reel R can be mounted thereon.

A mounting module 8 of the carriage 2 is composed of two round bars 12 . The outer diameter of the round bar 12 is usually set within the range of 20 mm to 40 mm. These round bars 12 are arranged side by side in the width direction, and both ends of each round bar 12 are fixed to the body frame 4 . In the width direction, the distance from the center line CL of the carriage 2 to one round bar 12 is the same as the distance from the center line CL of this carriage 2 to the other round bar 12 .

As shown in FIG. 2, in this cart 2, the flange F of the reel R is placed on two round bars 12. As shown in FIG. Thereby, the reel R is held by the mounting module 8 . When the reel R is placed on the carriage 2, the position of the center CR of the reel R coincides with the position of the center line CL of the carriage 2 in the width direction.

The guide module 10 is fixed to the body frame 4 . This guide module 10 is provided at the bottom of the body frame 4 . This guide module 10 is located outside the placement module 8 in the width direction. The guide module 10 guides the reel R to the placement module 8 .

In this carriage 2, guide modules 10 are provided on each of one side and the other side in the width direction. The guide module 10 may be provided only on one side in the width direction, or the guide module 10 may be provided only on the other side.

FIG. 3 shows an overview of the guidance module 10. As shown in FIG. In FIG. 3 , the horizontal direction is the width direction of the truck 2 . The direction perpendicular to the plane of the paper is the longitudinal direction of the carriage 2 .

The guide module 10 comprises a support shaft 14 , a pivot member 16 and a main plate 18 . The support shaft 14 extends longitudinally. Although not shown, the support shaft 14 is fixed to the body frame 4 at both ends thereof. The rotating member 16 is attached to the support shaft 14 via bearings. The rotating member 16 is rotatable with respect to the support shaft 14 . The main plate 18 is fixed to the rotating member 16 . The main plate 18 is rotatably supported by the support shaft 14 about the support shaft 14 as an axis. The main plate 18 of this truck 2 is a flat plate.

In this truck 2, the reel R rolls on the upper surface of the main plate 18. - 特許庁The upper surface of the main plate 18 is flat. In FIG. 3, reference character PS indicates the outer end of the main plate 18, and reference character PU indicates the inner end of the main plate 18. As shown in FIG. In this truck 2, the outer end PS and the inner end PU of the main plate 18 are specified based on the upper surface of the main plate 18 on which the reel R rolls.

FIG. 3(a) shows the state of the truck 2 before the reel R is loaded. As shown in FIG. 3A, the main plate 18 is inclined with respect to the width direction. The main plate 18 is set on the carriage 2 so that the outer end PS is located below the inner end PU. Thereby, a slope is formed between the mounting module 8 of the carriage 2 and the road surface G. As shown in FIG. Before the reel R is loaded onto the truck 2, the distance from the road surface G to the outer end PS of the main plate 18 is in the range of 30 mm to 50 mm.

In the operation of loading the reel R onto the truck 2, the reel R is arranged on the outside of the truck 2 in the width direction. When the operator pushes the reel R, the reel R rolls from the outside to the inside in the width direction and is placed on the main plate 18 . The reel R placed on the main plate 18 is further moved inward. Thereby, the reel R is moved upward while rolling on the main plate 18 . This reel R is eventually guided to the mounting module 8 .

FIG. 3(b) shows the state of the main plate 18 when the reel R is loaded onto the cart 2. As shown in FIG. In the carriage 2, when the contact surface between the reel R and the main plate 18 passes through the support shaft 14, the main plate 18 is pushed by the weight of the reel R to move the support shaft 14, as shown in FIG. 3(b). As it rotates about its axis, the outer end PS of the main plate 18 moves upward and the inner end PU moves downward. As a result, the force required to roll the reels R is reduced, so that the loading work of the reels R is reduced in the truck 2 . This cart 2 contributes to the improvement of working efficiency.

In FIG. 3B, symbol α is the angle formed by the upper surface of the main plate 18 with respect to the width direction of the carriage 2 before the reel R is loaded. This angle α is the inclination angle of the main plate 18 before it is rotated. Symbol β is the angle formed by the upper surface of the main plate 18 with respect to the width direction after the main plate 18 has been rotated around the support shaft 14 by the weight of the reel R itself. This angle β is the inclination angle of the main plate 18 after it has been rotated.

In the truck 2, the tilt angle β after the rotation of the main plate 18 is smaller than the tilt angle α before the rotation of the main plate 18. As shown in FIG. As shown in FIG. 3B, the inclination of the main plate 18 becomes gentle as the main plate 18 rotates. In this cart 2, the force required to roll the reel R is reduced, so the burden of loading the reel R is reduced. From this point of view, in the truck 2, the tilt angle β after the rotation of the main plate 18 is preferably smaller than the tilt angle α of the main plate 18 before the rotation. Specifically, the difference between the inclination angle α and the inclination angle β is preferably 5° or more and preferably 15° or less.

In this truck 2, the inclination angle α of the main plate 18 before rotation is preferably 15° or more and preferably 25° or less. By setting the inclination angle α to 15° or more, the main plate 18 having an appropriate width forms a slope. From this point of view, the inclination angle α is more preferably 18° or more. By setting the inclination angle α to 25° or less, the force required to place the reel R on the main plate 18 and move it upward can be suppressed appropriately. From this point of view, the inclination angle α is more preferably 22° or less.

In this truck 2, the inclination angle β of the main plate 18 after rotation is preferably 5° or more, and preferably 15° or less. By setting the inclination angle β to 5° or more, the main plate 18 having an appropriate width forms a slope. From this point of view, the inclination angle β is more preferably 8° or more. By setting the inclination angle β to 15° or less, it is possible to reduce the force required to place the reel R on the main plate 18 and move it upward. From this point of view, the inclination angle β is more preferably 12° or less.

In this truck 2 , the guide module 10 can be provided with a return unit 20 . The return units 20 are provided on both sides of the main plate 18 in the length direction. This return unit 20 comprises a support plate 22 and a spring 24 .

The support plate 22 is fixed to the rotating member 16 . In this truck 2, when the main plate 18 rotates, the rotating member 16 rotates. Therefore, when the main plate 18 rotates, the support plate 22 rotates together with the rotating member 16 . That is, this support plate 22 rotates together with the main plate 18 .

Spring 24 is provided with hooks 26 at its ends. As shown in FIG. 3, one hook 26 located on the upper side is hung on a rod 28 fixed to the body frame 4 . The other hook 26 located on the lower side is hung on a rod 30 fixed to the support plate 22 . Thereby, the spring 24 is bridged between the body frame 4 and the support plate 22 .

In the carriage 2, when the main plate 18 rotates due to rolling of the reel R, the support plate 22 rotates together with the main plate 18, and the rod 30 fixed to the support plate 22 moves downward. As a result, a force acts on the spring 24, and the spring 24 is extended as shown in FIG. 3(b).

In this carriage 2, when the reel R is guided to the mounting module 8, the load acting on the main plate 18 is removed. As a result, the load acting on the spring 24 is removed and the spring 24 is restored. Due to this restoration of the spring 24, the main plate 18 returns to the state before the rotation, as shown in FIG. 3(a).

In this carriage 2, when the reel R is guided to the mounting module 8, the main plate 18 automatically returns to the state before the rotation. In this carriage 2, it is easy to sequentially load a plurality of reels R. This return module contributes to reducing the burden of the reel R loading operation. According to this carriage 2, it is possible to further improve work efficiency. From this point of view, the truck 2 is provided with a return unit 20, and the return unit 20 is provided with a support plate 22 that rotates together with the main plate 18, and a spring 24 that bridges the body frame 4 and the support plate 22. preferable.

In this carriage 2, the guide module 10 can comprise a first tilt holding unit 32 which holds the tilted state of the main plate 18 before pivoting. This first tilt holding unit 32 extends in the longitudinal direction. The first tilt holding unit 32 is positioned outside the support shaft 14 in the width direction. This first tilt holding unit 32 is fixed to the body frame 4 below the main plate 18 .

As shown in FIG. 3( a ), in this truck 2 , the main plate 18 before rotation is supported by the support shaft 14 and the first tilting holding unit 32 . Since the main plate 18 is supported at two points, the inclined state of the main plate 18 is stably maintained. Since the sudden movement of the main plate 18 is suppressed, the operator can smoothly move the reel R along the main plate 18.例文帳に追加From this point of view, the guide module 10 of the carriage 2 preferably comprises a first tilt holding unit 32 that holds the tilted state of the main plate 18 before rotation.

In this carriage 2, the first tilt holding unit 32 is composed of a square bar. This first tilt holding unit 32 may be constructed from a round bar. The specifications such as the position and size of the first tilt holding unit 32 are appropriately determined in consideration of the aforementioned tilt angle α.

In this carriage 2, the guide module 10 can comprise a second tilt holding unit 34 for holding the tilted state of the main plate 18 after pivoting. This second tilt holding unit 34 extends longitudinally. The second tilt holding unit 34 is located inside the support shaft 14 in the width direction. Specifically, the second tilt holding unit 34 is positioned between the support shaft 14 and the mounting module 8 in the width direction. This second tilt holding unit 34 is fixed to the body frame 4 below the main plate 18 .

As shown in FIG. 3B , in the truck 2 , the main plate 18 after rotation is supported by the support shaft 14 and the second tilting holding unit 34 . Since the main plate 18 is supported at two points, the inclined state of the main plate 18 is stably maintained. Since the sudden movement of the main plate 18 is suppressed, the operator can move the reel R along the main plate 18 and smoothly guide it to the mounting module 8 . From this point of view, the guide module 10 of the carriage 2 preferably comprises a second tilt holding unit 34 for holding the tilted state of the main plate 18 after rotation.

In this carriage 2, the second tilt holding unit 34 is composed of a round bar. This second tilting holding unit 34 may be composed of a square bar. The specifications such as the position and size of the second tilt holding unit 34 are appropriately determined in consideration of the aforementioned tilt angle β.

In the carriage 2 , when the reel R is guided to the mounting module 8 , the reel R may come into contact with the second tilt holding unit 34 . From the viewpoint of suppressing the impact at the time of contact, it is preferable that the second tilting holding unit 34 is made of a round bar. In this case, from the viewpoint of smoothly guiding the reel R to the mounting module 8 , the outer diameter of the round bar forming the second tilt holding unit 34 is 1.5 times the outer diameter of the round bar 12 forming the mounting module 8 . More than twice is preferable, and less than 1.7 times is preferable.

In this carriage 2 , a plurality of reels R are placed on the mounting module 8 . In this carriage 2, one guide module 10 is provided for a plurality of reels R. As shown in FIG. In this carriage 2 , one guide module 10 may be provided for each of the plurality of reels R placed on the carriage 2 . In this case, as many guide modules 10 as there are reels R placed on the carriage 2 are provided.

FIG. 4 shows a portion of a reel R transport carriage 42 according to another embodiment of the present invention. In FIG. 4 , the horizontal direction is the width direction of the truck 42 . The direction perpendicular to the plane of the paper is the longitudinal direction of the carriage 42 .

This carriage 42 comprises a guide module 44 . This truck 42 has the same configuration as the truck 2 shown in FIG. 1 except for the guide module 44 .

Guidance module 44 shown in FIG. 4 is a variation of guidance module 10 shown in FIG. This guide module 44 has elements having the same configuration as the elements of the guide module 10 shown in FIG. Elements that are the same as those of the guide module 10 shown in FIG.

In this truck 42 , the guide module 44 comprises a connecting plate 46 and a sub-plate 48 . The connection plate 46 is fixed to the body frame 4 so that a portion thereof protrudes outward in the width direction from the body frame 4 .

As shown in FIG. 4, the sub-plate 48 is positioned outside the main plate 18 in the width direction. A sub-plate 48 of the carriage 42 is fixed to a projecting portion of the connecting plate 46 . This sub-plate 48 is fixed to the body frame 4 via a connecting plate 46 .

In this carriage 42, the reel R rolls on the upper surface of the sub-plate 48. As shown in FIG. The upper surface of the sub-plate 48 is flat. In FIG. 4, the symbol SS is the outer end of the sub-plate 48, and the symbol SU is the inner end of the sub-plate 48. As shown in FIG. In this truck 42, the outer end SS and the inner end SU of the sub-plate 48 are specified based on the upper surface of the sub-plate 48 on which the reel R rolls.

As shown in FIG. 4, the sub-plate 48 is slanted with respect to the width direction. In this carriage 42, the sub-plate 48 is fixed to the body frame 4 while being inclined with respect to the width direction.

In this carriage 42, the sub-plate 48 is set on the carriage 42 so that the outer end SS is located below the inner end SU. The main plate 18 is set on the carriage 42 so that the outer end PS is located below the inner end PU. In this truck 42 , the inclination direction of the sub-plate 48 is the same as the inclination direction of the main plate 18 .

In this truck 42 , a slope is formed between the mounting module 8 of the truck 42 and the road surface G by the main plate 18 and the sub-plate 48 . Since the sub-plate 48 is located outside the main plate 18 in the width direction, the outer end SS of the sub-plate 48 corresponds to the outer end of this slope. Before the reel R is loaded onto the truck 42, the distance from the road surface G to the outer end SS of the sub-plate 48 is in the range of 30 mm to 50 mm.

In the work of loading the reel R onto the truck 42 , the reel R is arranged on the outside of the truck 42 in the width direction. When the operator pushes the reel R, the reel R rolls from the outside to the inside in the width direction and is placed on the sub-plate 48 . When the operator pushes the reel R further, the reel R is rolled further inward and placed on the main plate 18 . The reel R placed on the main plate 18 is further moved inward. Thereby, the reel R is moved upward while rolling on the main plate 18 . This reel R is eventually guided to the mounting module 8 .

In the carriage 42, when the contact surface between the reel R and the main plate 18 passes through the support shaft 14, the weight of the reel R causes the main plate 18 to move toward the support shaft 14 as shown in FIG. 4(b). rotates around the axis. The outer end PS of the main plate 18 moves upward and the inner end PU moves downward. With this carriage 42, the force required to roll the reel R is reduced, so the burden of loading the reel R is reduced. This carriage 42 contributes to the improvement of working efficiency.

As described above, in this carriage 42, the sub-plate 48 is fixed to the body frame 4 while being inclined with respect to the width direction. Therefore, the inclination angle of the sub-plate 48 does not change even when the reel R passes.

In the bogie 2 having the guide module 10 shown in FIG. 3 as well, by appropriately setting the distance between the outer end PS of the main plate 18 and the road surface G, For example, it is possible to effectively prevent a worker's toes from being caught. In the carriage 42, the distance between the outer end SS of the sub-plate 48 and the road surface G is properly set, and the distance between the outer end SS of the sub-plate 48 and the road surface G during the loading operation of the reel R is is held constant, it is possible to more effectively prevent the toes of the operator from being caught between the sub-plate 48 and the road surface G. Since the effect of reducing the burden of the loading operation of the reels R is effectively and continuously exhibited, the truck 42 can further improve the working efficiency.

In FIG. 4A, symbol α is the angle formed by the upper surface of the main plate 18 with respect to the width direction of the carriage 42 before the reel R is loaded, that is, the inclination angle of the main plate 18 before rotation. Symbol γ is an angle formed by the upper surface of the sub-plate 48 with respect to the width direction. This angle γ is the tilt angle of the sub-plate 48 .

In this carriage 42, the inclination angle γ of the sub-plate 48 is set to It is preferably the same as the inclination angle α before rotation. Note that the inclination angle γ and the inclination angle α being the same means that the difference between the inclination angle γ and the inclination angle α is in the range of −1° or more and 1° or less.

In FIG. 4, a double arrow WP indicates the width of the main plate 18. As shown in FIG. This width WP is represented by the length from the outer end PS of the main plate 18 to the inner end PU. A double arrow WS is the width of the sub-plate 48 . This width WS is represented by the length from the outer end SS of the sub-plate 48 to the inner end SU.

In the carriage 42, the width of the sub-plate 48 relative to the width WP of the main plate 18 is set so that the operator can move the reel R along the sub-plate 48 and the main plate 18 and smoothly guide the reel R to the mounting module 8. The WS ratio is preferably 0.3 or more and preferably 0.5 or less.

As described above, according to the present invention, it is possible to obtain a carriage for transporting reels that can reduce the burden of loading work of reels R.

The embodiments disclosed this time are illustrative in all respects and are not restrictive. The technical scope of the present invention is not limited to the above-described embodiments, but includes all modifications within the scope of equivalents to the configuration described in the claims.

The technique described above, which can reduce the burden of the reel loading operation, can be applied to the manufacture of tires for various purposes.

DESCRIPTION OF SYMBOLS 2... Forming apparatus 2, 42... Carriage for reel conveyance 4... Body frame 6... Wheel 8... Mounting module 10... Guide module 14... Support shaft 18... Main plate 20 Return unit 24 Spring 32 First tilt holding unit 34 Second tilt holding unit 44 Guide module 48 Sub plate

Claims (7)

A carriage for carrying a reel comprising a pair of disc-shaped flanges and a drum positioned between the flanges,
body frame and
a mounting module fixed to the body frame and on which the reel is mounted;
a guide module positioned outside the mounting module in the width direction of the carriage and guiding the reel to the mounting module;
The guide module includes a support shaft fixed to the body frame and extending in the longitudinal direction of the carriage , and a main plate rotatably supported by the support shaft about the support shaft,
The main plate is inclined with respect to the width direction of the bogie ,
When the reel is placed on the main plate from the outside in the width direction of the truck and the reel is moved inward, the main plate rotates,
the guide module comprises a sub-plate positioned outside the main plate in the width direction of the truck;
A carriage for reel transportation , wherein the sub-plate is fixed to the body frame in a state of being inclined with respect to the width direction of the carriage . 2. The reel transporting carriage according to claim 1, wherein an inclination angle of said main plate after rotation is smaller than an inclination angle of said main plate before rotation. 3. The reel transporting carriage according to claim 2, wherein a difference between an inclination angle of said main plate before rotation and an inclination angle of said main plate after rotation is 5[deg.] or more and 15[deg.] or less. 4. The reel transporting carriage according to claim 2, wherein the inclination angle of the main plate before rotation is 15[deg.] or more and 25[deg.] or less. the guidance module comprises a return unit;
5. The reel transporting cart according to any one of claims 1 to 4, wherein said return unit comprises a support plate that rotates together with said main plate, and a spring that bridges said body frame and said support plate. 6. The reel transporting cart according to any one of claims 1 to 5 , wherein the inclination angle of the sub -plate is the same as the inclination angle of the main plate before rotation. A carriage for carrying a reel comprising a pair of disc-shaped flanges and a drum positioned between the flanges,
body frame and
a mounting module fixed to the body frame and on which the reel is mounted;
a guide module positioned outside the mounting module in the width direction of the carriage and guiding the reel to the mounting module;
The guide module includes a support shaft fixed to the body frame and extending in the longitudinal direction of the truck, a main plate rotatably supported by the support shaft about the support shaft, and a main plate after rotation. a tilt holding unit for holding the tilted state of the plate,
The main plate is inclined with respect to the width direction of the bogie,
When the reel is placed on the main plate from the outside in the width direction of the truck and the reel is moved inward, the main plate rotates,
the mounting module is composed of a first round bar fixed to the body frame,
the tilt holding unit is composed of a second round bar fixed to the body frame,
The carriage for reel transportation, wherein the outer diameter of the second round bar is 1.5 times or more the outer diameter of the first round bar.

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