JPH0544731U - Tire mud remover - Google Patents

Abstract

(57) [Summary] [Purpose] It is an object of the present invention to provide a device for automatically removing tire mud while traveling. [Structure] A roller 2 capable of rolling contact with a tread 21 of a tire 20, and a tire 20 suspended from an end portion of the roller 2
The chain 3 that abuts on the side portion 22 and the link mechanism 5 that swingably supports the roller 2 and the chain 3 with respect to the vehicle body 4 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a tire mud removing device.

[0002]

[Prior art and its problems]

 When the dump truck came out of the construction site, dirt on the tires polluted the general road, and it took time to remove the mud from the tires with water or a brush.

As a countermeasure against this, Japanese Utility Model Application Laid-Open No. 64-28353 proposes a device for pressing a brush mounted on a vehicle against a tire through an actuator. However, it is difficult to remove the mud attached to the tire with the brush alone. Equipment such as pipes for installing a water tank on the vehicle and supplying water to the brushes was required, resulting in a complicated structure.

The present invention has been made in view of the above problems, and an object thereof is to provide a device that automatically removes mud from tires while traveling with a simple structure.

[0005]

[Means for Solving the Problems]

 The present invention includes a roller that can roll on the tread of a tire, a chain that hangs from the end of the roller and hits the side of the tire, and a link mechanism that supports the roller and the chain so that they can swing with respect to the vehicle body. Equipped with.

[0006]

[Action]

 During normal running, the rollers and chains are pulled up via the link mechanism to a predetermined storage position where they do not hit the tires.

When the mud on the tire is dropped, the roller is lowered via a link mechanism to an operating position where the roller contacts the tread of the tire. When the vehicle runs in this state, the rollers scrape off the mud adhering to the tread, and each chain scrapes off the mud adhering to the side of the tire.

At this time, the roller follows the tread due to gravity acting on the roller and the link mechanism, and the chain is pressed against the side portion of the tire by its own weight, so that the mud adhering to the tire can be effectively scraped off.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 and 2, a tire mud removing device 1 provided in a dump truck includes a roller 2 capable of rolling contact with a tread 21 of each tire 20 and a tire suspended from an end of the roller 2. A chain 3 that abuts a side portion 22 of the roller 20, and a link mechanism 5 that supports the roller 2 with respect to the vehicle body 4 in a swingable manner are provided.

In this case, four right rear wheel tires 20 provided on two shafts are arranged below the right rear fender 6 attached to the vehicle body 4, and four rollers rolling on each tire 20 are provided. Be done. The left rear wheel tire (not shown) is also provided with the mud-removing device 1 having the same structure, and it may be possible to provide it on the front tire if necessary.

The link mechanism 5 is provided with a pair of ladder-shaped links 7 above each tire 20, and both ends of an upper rod 9 of each link 7 are turnable to a top plate 6 a of a fender 6 via brackets 8. Be connected. The central portions of the lower rods 10 of the links 7 are connected to each other via a connecting rod 11.

One end of the wire 12 is coupled to the central portion of the connecting rod 11, and the wire 12 relays the pulley 13 and the other end is coupled to the operating lever 14. By manually rotating the operation lever 14, each link 7 swings via the wire 12, and each lower rod 10 is moved up and down.

A pair of rollers 2 is rotatably connected to a lower rod 10 of each link 7 via an arm 15. The roller 2 has a right cylindrical shape, and has a length corresponding to the width of the tread 21 of the tire 20.

With respect to a vertical line O passing through the center of rotation of each tire 20, the upper rod 9 that is the center of rotation of each link 7 is located at the rear of the vehicle, and the position where the roller 2 rolls on the tire 20 is the vehicle position. It is located in the front.

Each chain 3 is formed by connecting a plurality of metal rings to each other. In this case, each ring is curved in an oval shape and the cross section of the ring is formed in a circular shape, but each ring is formed in a rectangular shape. It is also conceivable to bend or form the ring cross section into a rectangular shape.

A bundle of several chains 3 is located at both ends of each roller 2 and coupled to each lower rod 10. The connecting portion for connecting the lower rod 10 of each chain 3 is arranged slightly inside the tire 21 of each tire 20. Therefore, the distance between the connecting portions of the chains 3 suspended with the tires 20 sandwiched therebetween is smaller than the width of the tread 21 of the tire 20. Thus, as shown in the figure, each chain 3 is configured to hit the side portion 22 including the shoulder and side wall of the tire 20 by its own weight in a state where the roller 2 is in contact with the tread 21 of the tire 20.

Next, the operation will be described.

During normal traveling, each link 7 is pulled up to the storage position where each roller 2 abuts the top plate 6 of the fender 6, as shown by the chain double-dashed line in FIG.

When the dump truck has mud on its tires 20 when it leaves the construction site, for example, as shown by the solid line in FIG. It is pulled down via the operating lever 14 to the operating position in which it rolls against 20.

With respect to a vertical line O passing through the center of rotation of each tire 20, the upper rod 9 that is the center of rotation of each link 7 is located in the rear of the vehicle, and the position where the roller 2 rolls on the tire 20 is the vehicle. Since it is located in the front, the roller 2 is prevented from being caught up behind the tire 20 because the roller 2 is flipped up when the vehicle moves forward.

When running at the same position, each chain 3 slides on the side portion 22 of each tire 20 and scrapes off the mud adhering to the side portion 22.

At this time, each roller 2 follows the tread 21 due to the gravity acting on each roller 2 and the link mechanism 5, and each chain 3 is pressed against the side portion 22 by its own weight. Can be effectively scraped.

Since the hanging position of each chain 3 is arranged slightly inside the tread 21 of each tire 20, each chain 3 hits from the tread 21 to the side portion 22, and the tread 21 of the tire side portion 22 is hit. It is possible to effectively scrape off the mud that tends to adhere to the shoulder part near

A relatively small amount of mud adheres to the tread 21 in contact with the road surface of the tire 20, but the mud adhered to the tread 21 is scraped off by the roller 2. In order to enhance this effect, for example, a spiral groove may be formed on the outer peripheral surface of the roller 2 or unevenness may be provided.

After the mud is dropped on the construction site in this way, before the road is left on the general road, the chains 3 are pulled up again to the storage position where they do not hit the tires 20 via the operating lever 14 to drop the mud on the general road. Prevent.

Next, in another embodiment shown in FIG. 3, the mud-removing devices 1 provided on the left and right rear wheel tires 20 are automatically operated by the air cylinders 25.

The vehicle body 4 is provided with a lever 24 which is rotated by expansion and contraction of the air cylinder 25, and one end of each of the left and right wires 12 is coupled to each rotating tip of the lever 24.

The lever 24 is rotatably supported via a shaft 26, and a spring 27 for urging the lever 24 in one rotation direction is provided. The urging force of the spring 27 holds each mud removing device 1 at the storage position. It is supposed to do.

The air cylinder 25 is provided with an air pressure circuit to which compressed air is selectively sent by a switch provided in the driver's seat. When the air cylinder 25 extends against the spring 27, each link Each roller 2 is lowered through the mechanism 5 to an operating position where it is in rolling contact with each tire 20.

Further, as means for driving the mud removing device 1, instead of the lever 24 and the air cylinder 25, a winch for winding each wire 12 and an electric motor for driving the winch may be provided.

Next, another embodiment shown in FIGS. 4 and 5 will be described. A link 32 whose rear end is swingably supported via a shaft 31 is provided, and a front end of the link 32 has a front end. Rollers 2 capable of rolling contact are connected to the ear 20, and respective chains 3 are provided which respectively hit the front tire 20 and the rear tire 20 as the link 32 descends.

One end of a wire 33 is coupled to the front end of the link 32, and each link 32 is manually rocked via an operating lever 34.

[0034]

[Effect of the device]

 INDUSTRIAL APPLICABILITY As described above, the present invention is, as a tire mud-removing device, a roller capable of rolling on a tread of a tire, a chain hanging from the end of the roller and hitting a side of the tire, and With a simple structure, it can automatically scrape off the mud on the tires while the vehicle is running. It is easy to remove the mud from the tires by the time you leave the site, and you can prevent polluting the general roads.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a plan view showing another embodiment.

FIG. 4 is a front view showing still another embodiment.

FIG. 5 is a side view of the same.

[Explanation of symbols]

 1 Mud-removing device 2 Roller 3 Chain 4 Car body 5 Link mechanism 20 Tire 21 Tire tread 22 Tire side

Claims (1)

[Scope of utility model registration request] 1. A roller capable of rolling contact with a tread of a tire, a chain suspended from an end of the roller and hitting a side of the tire, and a link mechanism for supporting the roller and the chain so as to be swingable with respect to a vehicle body. A tire mud removing device characterized by being equipped with.