JP2561768B2 - Tire wheel and manufacturing method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tire wheel whose tire inner cavity is filled with an elastic material, and more particularly to a tire wheel which is not flat and is suitable for use in a work site such as a waste disposal site where there are many sharp foreign matters on the ground. The manufacturing method is related.

[0002]

2. Description of the Related Art As a measure against puncture of a tire of a vehicle used in a waste treatment plant or the like, a tire having a large size around the outer circumference of a tread of a conventional tire is tread from the upper position of the sidewall toward the circumferential direction. After cutting the part
This was used by stacking it on the outer circumference of the tread of the tire used and as a pneumatic tire with a double tread. However, many sharp foreign objects on the ground could easily penetrate the double tread, so the puncture was constant.

When a tire is punctured, in a large work vehicle, a tire having a correspondingly large size is used. Therefore, the wheel is detached from the vehicle, the tire wheel is recombined, or the recombined wheel with tire, that is, the wheel. Frequent work such as mounting on work vehicles and repair of flat tires was extremely troublesome and uneconomical.

On the other hand, as a tire which is not punctured, a tire having a tire inner cavity filled with a foaming rubber or urethane is known, but this kind of tire is disadvantageous in terms of cost and is not widely used. The current situation is that it has not arrived.

[0005]

SUMMARY OF THE INVENTION Therefore, according to the present invention, even if a foreign matter penetrates the tread of the tire, the tire does not puncture.
It also provides a low-cost tire wheel, and a method for manufacturing a filled tire wheel, which is possible by using simple equipment at a specific place including a work site and where no special place is required.

[0006]

[Means for Solving the Problems] First to achieve the above objects
Tire invention that stuffed buff powder tire lumen beforehand, the rim assembly has been vulcanized Zumi toroidal rubber lumen of the tire, formed by filling a mixture containing buff powder and tar tire as fillers The wheels.

[0007] A second invention is vulcanized Zumi toroidal rubber
Stage pack a buff powder in advance tire in the lumen of the non-tire
A floor, a step of assembling this tire to a wheel, a step of separately preparing a filler made of a mixture containing tire buff powder and tar, and a valve provided in the wheel to which the tire is assembled, through which the mixture is A method for manufacturing a tire wheel, comprising the step of filling by filling into the inner cavity of a tire, wherein the valve has a cylindrical shape with a threaded periphery.
The valve body and the pair of holes provided at the opposite positions.
Equipped with a disc-shaped check valve and through the two holes of this check valve
U-shaped with both ends fixed to one end of the valve body
And the axial direction that is fixed to the center of one surface of the above check valve.
Check valve handle extending in the same direction and screwed to the valve body
It consists of a cap, and with the cap removed,
By screwing from the outside to the inside of the rim in the radial direction,
It is characterized in that it is attached to the rim.

[0008]

In the tire wheel of the present invention, a mixture containing the tire buff powder and tar is filled in the tire bore defined by the tire and the wheel, so that the required elasticity can be maintained and foreign substances are not generated during running. Even when the tire penetrates the tread, the performance as a tire does not change before and after the penetration.

On the other hand, the tire buffing powder as the main filler is extremely inexpensive because it is originally an industrial waste resulting from buffing unnecessary tread rubber of the base tire when the tire is retreaded (or recapped). On the other hand, tar is not expensive either. Also, when these are mixed and press-fitted, it is sufficient to use a simple device, and no particular skill is required.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view showing a wheel of a tire wheel according to the present invention.

The rim portion 11 of the wheel 10 has a cylindrical shape, and flanges 12 extending outward in the radial direction are formed at both axial end portions.
a, 12b are formed. These two flanges 1
One of the flanges 12b of 2a and 12b is the rim portion 1
1 is inseparably integrated with the other flange 1
2a (lower side in the figure) is detachably attached. The disk 13 is a part attached to the vehicle. The valve 20 to be described later is provided at the center of the rim portion 11.
A mounting hole 14 (diameter 30 mm in this embodiment) for assembling is attached, and a screw is carved on the inner peripheral surface of the mounting hole 14. Although the rim portion 11 of this type is originally provided with an elliptical valve hole (not shown), the elliptical valve hole is filled up and a new screw mounting hole 14 is newly formed as described above. Is provided.

In the method of manufacturing the tire wheel E, in this embodiment, the toroidal vulcanized tire T as a product is laid down and the inner cavity Ta of the tire T is filled with the buffing powder M _{1 of the} tire. Just pack. This buff powder M ₁ is
It is used as a base tire when retreading a tire. It is obtained by scraping off the tread remaining after wear with a buffing machine, so the size of the particles varies (about 1
mm to about 5 mm).

A tire having a small size, for example, 11.00-, is not directly filled with the buffing powder M ₁ in the tire bore Ta.
No. 20 to 9.00-20 size tires after unnecessary wear are cut in the circumferential direction at the sidewall position, and the part centered on the cut tread is fitted to the inner circumferential surface of the tire in use. The buff powder can be packed in a double tire for use (not shown).

In order to facilitate the filling operation of the buffing powder M ₁ , the bead portions B, which are usually relatively narrow, which are the filling ports of the tire T, have a constant interval, for example, by inserting a tube in the tire. It is convenient to increase the internal pressure appropriately for the time because the interval between the beat portions B is expanded. It goes without saying that the tube should be removed when the beat interval increases. The tire that has been filled with the buff powder M ₁ has a lower flange 12 of the wheel 10 shown in FIG.
a is removed, and the tire T is fitted to the wheel 10 by a rim assembly method that is usually performed. After that, the removed flange 1
Prior to mounting 2a on the wheel 10, the valve 20 is mounted on the wheel 10. In this case, the bead portion B of the tire T on the side of the removed flange 12a is directed toward the fixed flange 12b of the wheel 10. Pressing is applied, and the valve 20 shown in FIG. 3 is attached to the valve hole 14 of the wheel 10 through the gap created by doing so.

FIG. 2 is a perspective view showing the valve 20.

The valve 20 has a disc-shaped check valve 23 having a cylindrical valve body 21 having a screw 20a cut around it and a pair of holes 22 provided at positions different by about 180 °.
And a U-shaped guide 24 whose both ends pass through the two holes 22 of the check valve 23 and are fixed to one end inside the valve body 21, and are fixed to the center of one surface of the check valve 23. It comprises a check valve handle 25 extending in the axial direction and a cap 26 screwed to the valve body 21.

The handle 25 of the check valve 23 is initially longer than the length of the valve body 21 by a predetermined length.

When the valve 20 is attached to the wheel 10, as shown in FIG. 3, with the cap 26 removed, the portion of the valve body 21 to which the cap 26 is attached is directed from the radially outer side to the inner side of the rim 11. The valve hole 14 is screwed. When the valve 20 is completely attached, the flange 12a is attached and assembled at a predetermined position at one end of the rim portion 11.

Meanwhile, by stirring with a suitable apparatus tar M ₂ having fluidity at the buff powder M ₁ and room temperature, providing a mixture M of buff powder M ₁ and tar M ₂ having fluidity. The mixing ratio is preferably about 3 liters of tar M ₂ with respect to 10 kg of buff powder M ₁ . Buff powder M
It goes without saying that addition of other substances other than ₁ and tar M ₂ is not hindered unless the purpose is impaired. For tar, coal tar and asphalt can be preferably used.
In order to facilitate the press-fitting of the mixture to be described later, it is more preferable to preheat the tar and heat the mixture during stirring to soften the buff powder and reduce the mixing ratio of the tar. When the mixture is ready, it is press-fitted into the tire inner cavity Ta by using a suitable press-fitting means.

FIG. 4 is an explanatory sectional view of the tire wheel E showing the outline of the press-fitting state of the mixture.

When injecting the mixture M, a hose 30 is provided between the press-fitting pump (not shown) and the valve 20 of the wheel 10, and the space of the mixture that cannot be filled with the pre-filled buff powder M ₁ is mixed by the action of the pump. Fill with pressure from M. When the tire inner cavity T _a is completely filled with the mixture M, the tar M ₂ oozes out from the gap between the attached flange 12 a and the rim 11, so that the state can be determined.

As shown in FIG. 3, the valve 20 at the time of press fitting allows the check valve 23 to move downward to open the valve 20, so that the mixture M can easily pass through the valve 20. When the press fitting is completed, the chuck 31 of the hose 30 is removed. Then, the check valve 23 automatically closes the valve body 21 by the internal pressure, and prevents the mixture M from flowing back. Further, when the check valve 23 is insufficiently moved upward for some reason, the check valve 23 can be moved upward by pulling the tip of the protruding handle 25 to seal the valve body 21. . afterwards,
As shown in FIG. 5, the handle 2 protruding from the mouth of the valve 20.
A series of press-fitting operations is completed by cutting off unnecessary portions of 5 and tightening the cap 26 on the inlet of the valve body 21.

[0024]

INDUSTRIAL APPLICABILITY In the present invention, the tire buff powder, which constitutes the main part of the filler made of the mixture, is a reuse of industrial waste and therefore is extremely inexpensive (about 10 yen / Kg). while filling operation of the buff powder and mixture of tars also not require particular skill by the simple device (valve),
The tire wheel formed by filling the mixture can maintain the rigidity and running performance required for the tire without change before and after the tread portion is penetrated by a sharp foreign substance due to the elasticity of the tire buff powder.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view showing a wheel of a tire wheel according to the present invention.

FIG. 2 is a perspective explanatory view showing the valve of the same.

FIG. 3 is a cross-sectional explanatory view showing a state in which the valve of the same as above is attached to a wheel.

FIG. 4 is an explanatory cross-sectional view showing a situation where the mixture is press-fitted.

FIG. 5 is a cross-sectional explanatory view of the valve after press-fitting the mixture.

[Explanation of symbols]

10 wheel 20 valve T tire T _a tire bore M ₁ tire buff powder M ₂ tar M mixture (filler)

Claims (3)

(57) [Claims] 1. A tire buffing powder is previously packed in the inner cavity.
Because, the rim assembly has been vulcanized Zumi toroidal rubber lumen of the tire, a mixture comprising buff powder and tar tire and filler
Tire wheels that are filled with Wherein the steps of packing a buff powder beforehand tire in the lumen of the vulcanization Zumi toroidal rubber tires, comprising the steps of assembling the tire to the wheel, a filling material made of a mixture comprising buff powder and tar tire the method comprising separately preparing, through a valve with the wheel in which the tire is assembled, the manufacturing method for wheels comprising the step of filling by press fitting the mixture in the lumen of the tire. 3. A valve provided on a wheel is provided around the periphery.
Installed in a position that faces the cylindrical valve body that has been cut.
Disc-shaped check valve with a pair of cut holes and this check valve
Both ends pass through the two holes of the valve and
Fixed U-shaped guide and one side of the above check valve
Check valve handle fixed in the center and extending in the axial direction, and
The cap that is screwed to the main unit
With the rim removed, face the rim from the outside to the inside in the radial direction.
It can be attached to the rim by screwing
The method for manufacturing a tire wheel according to claim 2.