JPS621301Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a device for capturing tire chains and the like mixed in snow.

Generally, when it snows, a car is driven with a tire chain attached, but for some reason these tire chains become unusable and are dumped on the road, or they come off while driving and are left unattended, causing them to get mixed into the snow. I often put it away. Particularly on highways, even if a tire chain falls off, it is difficult to stop or back up to pick it up, so tire chains are often left as they are.

By the way, during snow removal work, tire chains left on the road are piled up on the side of the road along with snow by a Blau snowplow. A rotary snowplow is dispatched to remove the snow that has piled up on the side of the road, but the tire chains mixed in with the snow can be found in the rotating parts of the auger and blower of the rotary snowplow being worked on. Accidents such as breakage of the shear pin caught in the engine, damage to the auger or blower, etc., which make the auger or blower unable to rotate, often occur. Once such an accident occurs, in some cases, the damaged vehicle must be taken to a repair shop, or welding machines, fusing machines, etc. must be brought to the site for repair work, which becomes a major hindrance to urgent snow removal work. ing.

This idea was made in view of the above circumstances,
A capture claw is attached to the auger, and the capture claw is used to capture foreign objects such as tire chains mixed in the snow, resulting in damage to the auger and blower, inability to rotate, and breakage of the shear pin due to foreign objects caught in the snow. An object of the present invention is to provide a device for preventing tire chains from being caught in snow removal machines, which eliminates the need for tire chains, etc.

This invention will be explained below with reference to the drawings.

1 to 3 show an embodiment of this invention applied to a rotary snowplow (snow removal machine). This rotary snowplow consists of a self-propelled vehicle equipped with a drive device such as an engine and a hydraulic pump that drive each component, and a snow removal device 2 attached to the front end of the vehicle and driven by the drive device. It is configured. Further, the snow removal device 2 includes:
The auger blades 3 provided at the front end are rotatably driven to cut the accumulated snow and shovel it to the center, the horizontally long snow removal frame 4 that surrounds the back circumference, both sides and the upper part of these auger blades 3, and this snow removal. The snow blower 5 is provided at the rear of the frame 4 and includes a snow blower 5 that throws snow taken in by the auger blades 3 to the side.

The auger blade 3 is a plate-shaped body wound spirally, and is provided so as to be freely rotatable in the circumferential direction with its center axis substantially horizontal. Three auger blades 3 are provided on the inside of the right side of the snow removal frame 4, and the left auger blades 3 and the right auger blades 3 are wound in opposite directions, so that each auger Feather 3...
cuts into the snow S by a depth D with the tooth tips 3a on the outer periphery of each auger blade 3...
b is adapted to scrape snow toward the center in the width direction of the snow removal frame 4 (the center in the left-right direction in FIG. 1).

On the tooth surface 3b of each of the auger blades 3, there are a large number of dogleg-shaped capture claws 3c that face the rotation direction B of the auger blade 3 and protrude from the tooth surface 3b at an angle with respect to the tooth surface 3b. They are attached along the auger blades 3 with their tips located inside the tooth tips 3a of the auger blades 3 that cut into the snow. In addition, the first
In the figure, the capture claws 3c are not depicted on the right side of the auger blade 3, but in reality, a large number of capture claws 3 are provided on this right side as well. In addition, each of the above-mentioned capture claws 3
The distances H ₁ , H ₂ , H ₃ . . . between the attachment portion of c to the auger blade 3 and the outermost peripheral end of the auger blade 3 are set differently depending on each capture claw 3c.

6 in the figure is a tire chain mixed in the snow S.

Next, the operation of this device configured as described above will be explained.

As is well known, the snow removal device 2 uses auger blades 3 to remove accumulated snow and blows this snow to a snow-throwing blower 5.
The snow is sent to the side and thrown to the side. Here, the tooth tips 3a of the auger blades 3 cut into the snow S to a depth D as shown in FIG. The snow removal frame 4 is configured to push the snow into a mass of snow and transport it to the center of the snow removal frame 4.

By the way, when the auger blade 3 approaches the tire chain 6 in the snow S, the auger blade 3 tries to gather the tire chain 6 along with the snow to the center of the snow removal frame 4 by its blade surface 3b. Then,
Capture claw 3c protruding from tooth surface 3b of auger blade 3
One of them catches the tire chain 6 which is being moved towards the center of the snow removal frame 4 and captures it. Here, the tire chain 6 caught by the capture claw 3c is moved by the centrifugal force of the auger blade 3 to the capture claw 3c.
It is transferred to the root part on the tooth surface 3b side of c, but the capture claw 3
The gap between the tire chain 6 and the tooth surface 3b becomes narrower toward the root of the capture claw 3c.
is held between the capture claw 3c and the tooth surface 3b. Therefore, the tire chain 6 is the blower 5.
Therefore, the blower 5 will not be damaged or unable to rotate, and the shear pin will not be broken. In addition, since there is a sufficient gap between each capture claw 3c and the snow removal frame 4, the tire chain 6 is inserted into this gap.
There's no danger of it biting you. Furthermore, since the shape of the auger blade 3 may be the same as the conventional one, there is no effect on the snow removal performance. Note that the capture claws 3c are located inside the tooth tip 3a of the auger blade 3, and
Since the capturing claws 3c do not touch the snow S when cutting into the snow S, the capturing claws 3c do not wear out. Furthermore, even if the auger blade 3 touches the road surface, the capture claw 3c does not touch the road surface.
There is no risk of wear or damage to the capture claw 3c. On the other hand, since the distances H ₁ , H _{2 .} . . between the attachment part of the capture claw 3c to the auger blade 3 and the tips of the teeth of the auger blade 3 are different, the angle of entry of the tire chain 6 into the auger blade 3, Many capture claws 3 even if the direction of entry is different
c is designed to securely catch the tire chain 6.

Note that the capturing claw 3c can be attached to the auger blade 3 by any means such as bolting, welding, etc.

By the way, the shape of the capture claw 3c is not limited to the dogleg shape as in the above-described embodiment, but may also be T-shaped, S-shaped, or O-shaped.
It can also be in the shape of a letter.

As explained above, this device cuts into the snow and scrapes up the snow with a large number of traps protruding inward from the tips of the tooth surfaces of the auger blades, facing in the direction of rotation of the auger blades and inclined to the tooth surfaces. It is configured with a claw attached, and the capture claw catches the tire chain in the snow by sandwiching it between the auger blade, so the tire chain does not get caught on the blower, and the tire chain is captured between the capture claw and the snow removal frame. The tire chain will not get caught. Therefore, the auger or blower will not be able to rotate, and the shear pin will not be damaged or worn out. In addition, the capture claws are located inside the tooth tips of the auger blades, and the capture claws do not touch the snow when the auger blades cut into the snow, so the capture claws do not wear out during snow removal work. Furthermore, even if the auger blades touch the road surface, the capture claws do not touch the road surface, so there is no risk of wear and tear. On the other hand, since the shape of the auger blade may be the same as the conventional one when the capture claw is provided on the auger blade, the snow removal performance of the auger blade is not affected in any way.

[Brief explanation of drawings]

The drawing shows one embodiment of this invention.
The figure is a front view, the second figure is a side view, and the third figure is an enlarged view of the capture claw. 3...Auger blade, 3b...Tooth surface, 3c...Capture claw.

Claims (1)

[Scope of utility model registration request] In a snow removal machine in which a spiral auger blade is rotatably provided at the front of the vehicle body, the tooth surface of the auger blade that scrapes up snow has a tooth surface that faces the direction of rotation of the auger blade and protrudes at an angle from the tooth surface. A trapping device for a tire chain or the like in a snow removal machine, characterized in that a large number of trapping claws are each attached to the inner side of the tooth tip of an auger blade that cuts into the snow.