JP2010167874A - Truck for storing raw tire - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a truck for storing a raw tire, which supports the raw tire while preventing its deformation with a simple structure. <P>SOLUTION: The truck for storing the raw tire includes rotating and supporting means 5L, 5C, 5R, which support the raw tire T in a vertical posture from the lower part and whose support contact portions rotate the raw tire T. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a carriage for transporting and storing raw tires before vulcanization molding.

Since the green tire before vulcanization molding is not fixed in shape and is in a deformable state, there is a possibility that a specific external force that is not uniform is always applied depending on the storage state to be deformed.
In particular, large tires used in large vehicles such as trucks, buses, and self-propelled construction vehicles are partially loaded with their own weight if they are simply placed in either horizontal or vertical orientation. It always adds and deforms.

  If the raw tire is deformed, it cannot be accurately set at a predetermined position of the vulcanizer at the time of vulcanization molding in the next process, resulting in a problem.

  Therefore, the “green tire carrying carriage” disclosed in Patent Document 1 supports the lower outer side of a vertically placed raw tire in contact with a fabric band, and the raw tire is lifted from the inside by a plurality of rollers. Yes.

Japanese Utility Model Publication No. 56-87361

  That is, the cart disclosed in Patent Document 1 is a deformation of the raw tire by supporting the raw tire in a vertically placed posture from the outside by a cloth band and by supporting the roller by lifting from the inside as evenly as possible. I'm trying to prevent you.

  However, since the roller supporting the raw tire from the inside supports the weight by contacting the inner peripheral edge of the raw tire, there is a possibility that the inner peripheral edge of the raw tire may be deformed by the roller with a long-time support, If the inner peripheral edge portion is deformed, the upper portion of the green tire may be lowered and the entire circular shape may be deformed.

  In addition, the mechanism for lifting and supporting the raw tire from the inside by the roller is not a simple structure, and it is also necessary to construct a fabric band, and the apparatus for supporting the raw tire is extremely complicated and expensive.

Furthermore, since the green tire is evenly supported by the band and the roller, it is not easy to mount and support the green tire on the carriage.
In particular, the work of hooking a heavy raw tire on a roller is not easy, and if a fine work is required, workability is lowered.

  In addition, although the roller which lifts and supports the raw tire of the cart disclosed in Patent Document 1 from the inside can be rotated to rotate the raw tire, it is not for preventing deformation of the raw tire, but for inspection of the tire. In this case, the band supported from the outside and the lower side is obstructed from rotating, so that it is necessary to lift the green tire further away from the band.

  This invention is made | formed in view of this point, and the process made into the objective is to provide the cart for raw tire storage which can prevent and support a raw tire with a simple structure.

  In order to achieve the above-mentioned object, the invention according to claim 1 is for raw tire storage comprising a vertically supporting raw tire from below and a support contact portion for rotating the raw tire. It was a trolley.

  According to a second aspect of the present invention, there is provided the raw tire storage cart according to the first aspect, wherein the rotation support means supports a plurality of elongate shafts extending in the direction of the rotation axis and oriented in the same horizontal direction on the frame. The rollers are arranged so as to support the raw tires in a vertically placed posture from below, and at least one of the plurality of support rollers rotates.

  According to a third aspect of the present invention, in the raw tire storage cart according to the second aspect, a pressure sensor is provided in a portion of the frame that supports the support roller, and the rotation of the support roller is performed based on a detection signal of the pressure sensor. Control is performed.

According to the green tire storage cart of claim 1, the rotation support means supports the green tire in the vertical position from below, and the support contact portion of the rotation support means rotates the green tire. The raw tire is supported while being rotated in a vertical posture by the rotation support means having the above configuration, and the load due to its own weight is evenly applied to the raw tire, thereby preventing the raw tire from being deformed.
Since the raw tire may be supported on the support contact portion of the rotation support means, the work of mounting and supporting the raw tire on the carriage is easy and workability is good.

  According to the cart for storing raw tires according to claim 2, a plurality of elongate support rollers are installed in the same horizontal direction on the frame so as to contact the green tires in the vertical position from below. The rotation support means is arranged so as to support the raw tire, the raw tire is supported in a vertical posture by a plurality of support rollers, and at least one of the plurality of support rollers rotates, so that the raw tire Can be rotated and stored while being easily supported, and the raw tire is evenly subjected to a load due to its own weight and is prevented from being deformed.

  According to the cart for storing raw tires according to claim 3, the pressure sensor is provided in the portion of the gantry that supports the support roller, and the rotation of the support roller is controlled based on the detection signal of the pressure sensor. By detecting whether the raw tire is supported or not, when the raw tire is not supported, the rotation of the rotation roller can be automatically stopped.

It is a front view of the cart for raw tire storage of one embodiment concerning the present invention. It is the same sectional view (II-II line sectional view of Drawing 1). It is a front view of the cart for raw tire storage of another embodiment.

Hereinafter, an embodiment according to the present invention will be described with reference to FIGS. 1 and 2.
A raw tire storage cart 1 according to the present embodiment is a cart that stores a raw tire T of a large tire used for a large vehicle such as a truck, a bus, or a self-propelled construction vehicle, and the raw tire storage cart. 1 is a front view of FIG. 1, and FIG. 2 is a cross-sectional view (a cross-sectional view taken along the line II-II of FIG. 1).
In the raw tire storage cart 1, a rectangular plate-like base 2 is supported by wheels 3 provided at four corners so as to be able to run.

A platform 4 is provided on the base 2.
The gantry 4 is formed by bending the front and rear of a rectangular plate upward to form bearing walls 4f and 4r that are opposed to each other in the front and rear, and is fixedly fitted into a rectangular hole of the base 2.
Three support rollers 5L, 5C, 5R are installed in parallel with each other between the front and rear bearing walls 4f, 4r which are erected in parallel with each other with a predetermined interval of the gantry 4.

Support rollers 5L and 5R are arranged at equal intervals on the left and right sides of the central support roller 5C, and the central support shafts 5Ls, 5Cs and 5Rs of the support rollers 5L, 5C and 5R are at the same height on both ends. Is fitted and supported on the bearing walls 4f and 4r.
The left and right support rollers 5L and 5R have the same roller outer diameter, and the center support roller 5C has a smaller roller outer diameter than the support rollers 5L and 5R.

The three support rollers 5L, 5C, 5R are arranged so as to support the raw tire T in a vertically placed posture from below.
That is, the three support rollers 5L, 5C, and 5R are in contact with the outer peripheral surface of the raw tire T in a vertically placed posture, and the central small-diameter support roller 5C is in contact with the lowermost portion of the outer peripheral surface of the raw tire T. The rollers 5L and 5R are in contact with a high part separated from the lowermost part of the outer peripheral surface of the raw tire T to the left and right to prevent the raw tire T in a vertically placed posture from rolling off.

The support rollers 5L, 5C, and 5R are all power mora, and are self-rotating drive rollers that incorporate a motor and a speed reducer inside the rollers.
The large-diameter left and right support rollers 5L and 5R rotate at the same rotational speed, the small-diameter central support roller 5C rotates at a larger rotational speed, and the three support rollers 5L, 5C, and 5R have the same direction. Are set to rotate at the same peripheral speed.

The large raw tire T has a large axial width, and when placed on the three support rollers 5L, 5C, and 5R, it is supported stably while maintaining the vertical orientation.
When the support rollers 5L, 5C, and 5R are rotated, the raw tire T is rotated by the peripheral movement of the support contact portions of the support rollers 5L, 5C, and 5R while being supported in the vertical posture.

A pressure sensor 6 is disposed at a portion of the front bearing wall 4f that receives the center support shaft 5Cs of the support roller 5C at the center.
The pressure sensor 6 detects the load applied to the central support roller 5C when the raw tire T is supported by the support rollers 5L, 5C, and 5R, so that the raw tire T is mounted on the raw tire storage cart 1. It is possible to detect whether or not.

  In addition, the fall prevention frame 7 is erected on the base 2 along the bearing walls 4f and 4r of the gantry 4 so as to sandwich the raw tire T with a slight gap before and after the vertically placed raw tire T. The fall prevention frame 7 prevents the raw tire T from falling over when the raw tire T is loaded or unloaded.

  Further, at the left and right end portions of the base 2, a fall prevention pipe 8 bent in a U-shape can be freely formed in a state in which the base portions of both ends are pivotally supported and standing up obliquely and lying down. It is attached as follows.

Brackets 9 project in a triangular shape on both front and rear sides of the fall-preventing pipe 8 bent in a U-shape, and a connecting pipe 10 that connects the apexes of the front and rear brackets 9 and a central connecting portion 8c of the fall-preventing pipe 8. A belt-like cloth band 11 is installed between the two.

When the fall-preventing pipe 8 stands up, as shown in FIG. 1, the fabric band 11 is used when the raw tire T supported on the three support rollers 5L, 5C, 5R rolls out. And the fall of the raw tire T together with the fall prevention pipe 8 can be prevented.
The fabric band 11 is not essential.

At this time, the fabric band 11 does not scratch the raw tire T flexibly.
The fall prevention pipe 8, together with the fabric band 11, falls and unloads when the raw tire T is loaded and unloaded.
The loading and unloading of the raw tire T is performed simply by placing or unloading the raw tire T on the three support rollers 5L, 5C, and 5R. Therefore, the unloading operation is easy and the workability is good.

  The tire storage cart 1 has a simple structure in which the raw tire T is supported by the three support rollers 5L, 5C, and 5R as described above, and the raw tire T has the three support rollers 5L, 5C, and 5R. When supported vertically on the 5R, the pressure sensor 6 provided in the bearing portion of the central support roller 5C detects the loading of the raw tire T and automatically supports the three support rollers 5L, 5C, The raw tire T mounted by driving 5R is rotated.

Accordingly, the tire storage cart 1 can rotate and store the raw tire T in a vertically placed posture with a simple structure, and the raw tire T is evenly subjected to a load due to its own weight and is prevented from being deformed.
When the raw tire T supported by the three support rollers 5L, 5C, and 5R is lowered, the load applied to the center support roller 5C is released, and the pressure sensor 6 detects this to detect the support roller 5L. , 5C, 5R are automatically stopped.

Although the tire storage cart 1 supports the raw tire T by the three support rollers 5L, 5C, and 5R, the raw tire may be supported by two or four or more support rollers.
Further, the central support shaft of the support roller is installed at the same height and the diameter is changed to support the lower circular arc surface of the raw tire T. You may arrange along an outer periphery circular arc surface so that an outer periphery lower arc surface may be touched.

The three support rollers supporting the raw tire T of the tire storage cart 1 are all drive rollers in the power mora, but at least one support roller is a drive roller and the other support rollers can be simply rotated. It may be an idle roller that is pivotally supported.
However, when a large and heavy green tire is supported and rotated, more stable rotation can be realized by using as many support rollers as possible.

Next, another embodiment in which a support roller for rotating the raw tire T is driven by another method will be described with reference to FIG.
In the raw tire storage cart 21 according to the present embodiment, a rectangular plate-like base 22 is supported by wheels 23 provided at four corners so that the base 24 provided on the base 22 is front and rear. Opposing bearing walls 24f and 24r are formed in parallel with each other at a predetermined interval, and support rollers 25L, 25C and 25R which are three idle rollers are parallel to each other between the front and rear bearing walls 24f and 24r. It is erected.
The left and right support rollers 25L and 25R have the same roller outer diameter, and the center support roller 25C has a smaller roller outer diameter than the support rollers 25L and 25R.

A guide pulley 26C is rotatably supported between the front and rear bearing walls 24f and 24r and close to the bottom of the center support roller 25C. The left and right support rollers 25L and 25R have the same height as the guide pulley 26C. Further, guide pulleys 26L and 26R are rotatably supported on the left and right outer sides, and a drive pulley 26D is pivotally supported below the guide pulley 26C.

  An endless rubber belt 27 is wound around the guide pulleys 26L, 26C, 26R and the drive pulley 26D. The central support roller 25C sandwiches the rubber belt 27 between the guide pulley 26C and the left and right support rollers 25L, 25R presses the rubber belt 27 downward between the central guide pulley 26C and the left and right guide pulleys 26L, 26R.

  The driving pulley 26D is driven by a motor 28 mounted on the base 22. The driving pulley 26D rotates the rubber belt 27, and the rotation of the rubber belt 27 includes three support rollers 25L and 25C in contact with the rubber belt 27. , 25R is rotated at the same peripheral speed.

  Accordingly, the three support rollers 25L, 25C, and 25R support the raw tire T in a vertically placed posture from below, and the raw tire T is rotated by the peripheral movement of the support contact portion of the support rollers 25L, 25C, and 25R. .

As described above, the raw tire storage cart 21 drives the three support rollers 25L, 25C, and 25R by driving one motor 28, and rotates and stores the raw tire T in the vertical position. The raw tire T is evenly subjected to a load due to its own weight, and deformation is prevented.
Since the raw tire T is simply placed on or lowered from the three support rollers 25L, 25C, 25R, the loading and unloading work is easy and the workability is good.

The raw tire storage cart 21 is also provided with a pressure sensor in the bearing portion of the central support roller 25C, and its detection signal is used for drive control of the motor 28.
Further, like the tire storage carriage 1 of the above-described embodiment, the overturning prevention frame 30 is erected so as to sandwich the raw tire T with a slight gap before and after the vertically placed raw tire T. A fall prevention pipe 31 is provided along with a fabric band 32 at the left and right ends of the base 22.

  In the above embodiment, the raw tire is supported and rotated from below by a plurality of support rollers. However, the raw tire is supported by the belt in a vertical position and is rotated by rotating the belt. The structure which rotates a tire may be sufficient.

T ... Raw tire,
DESCRIPTION OF SYMBOLS 1 ... Raw tire storage cart, 2 ... Base, 3 ... Wheel, 4 ... Mount, 4f, 4r ... Bearing wall, 5L, 5C, 5R ... Support roller, 6 ... Pressure sensor, 7 ... Overlay prevention frame, 8 ... Fall prevention pipe, 9 ... Bracket, 10 ... Connection pipe, 11 ... Cloth band,
21 ... Carts for raw tire storage, 22 ... Base, 23 ... Wheel, 24 ... Base, 24f, 24r ... Bearing wall, 25L, 25C, 25R ... Support roller, 26L, 26C, 26R ... Guide pulley, 26D ... Drive pulley 27 ... Rubber belt, 28 ... Motor, 30 ... Fall prevention frame, 31 ... Fall prevention pipe, 32 ... Cloth band.

Claims (3)

  A cart for storing raw tires, characterized in that it comprises a rotation support means for supporting a green tire in a vertically placed posture from below and a support contact portion for rotating the green tire. The rotation support means is arranged so that a plurality of long support rollers are installed in the same horizontal direction on the gantry and are supported in contact with the raw tires in the vertical position from the lower side in the rotation axis direction. Configured,
2. The cart for storing raw tires according to claim 1, wherein at least one of the plurality of support rollers is a drive roller that rotates by itself. A pressure sensor is provided on a portion of the gantry that supports the support roller,
The cart for raw tire storage according to claim 2, wherein the rotation of the support roller is controlled based on a detection signal of the pressure sensor.

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