JPS6032186Y2 - Metal foreign object detection device in rotary snow removal equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a metal foreign object detection device in a rotary snow removal device.

During snow removal work using a rotary snow removal device, metal foreign objects such as tire chains left buried in the snow may become tangled with an auger or the like, causing problems in the snow removal work.

When a tire chain gets tangled in an auger, it takes a long time to remove it, and it is very difficult to remove it in the cold and snowy conditions.

The purpose of this invention is to provide a metal foreign object detection device for a rotary snow removal device that can promptly detect metal foreign objects that become entangled in an auger or the like and interfere with snow removal work.

Hereinafter, embodiments of this invention will be described in detail based on the drawings.

. In Fig. 1, a rotary snow removal device, as is well known, has a frame 1 with support arms 2A and 2B protruding forward from the left and right, and a hole provided in the front of this frame 1 with a hole in the center for feeding snow. a snowboard 3, an auger 4 that is attached to a rotating shaft 4A rotatably supported between support arms 2A and 2B, and collects snow to the center, and a frame 1.
It consists of a blower 5 installed inside the boat 3 which sucks snow collected in the center by an auger 4 through a hole in the boat 3 and blows it upward, and a casing 6 of the blower 5.

A rotating chute that guides the snow from the blower 5 upward and scatters it in required directions such as right and left sides, and a rotation drive device for the auger 4 and the blower 5 are not shown.

This rotary snow removal device is used by being attached to a construction vehicle or a dedicated snow removal vehicle.

The auger 4 and its rotating shaft 4A are electrically insulated from the frame 1 and the board 3.

This situation is shown in FIG. 2 for the bearing portion of the support arm 2A.

One end of the rotating shaft 4A of the auger 4 has an insulating bushing 1.
2 into the hole of the support arm 2A, and the support arm 2
It is rotatably received by a bearing 10 provided at A.

A casing 11 of this bearing 10 is attached to the support arm 2A via an annular insulator 13.

An insulating bushing 14 is also fitted to the bolt/nut 16 that fixes the casing 11, and is tightened via an insulating seat plate 15.

Although not shown, the other end of the rotating shaft 4A is also rotatably supported by the other support arm 2B in a similarly insulated state.

At the other end of the rotating shaft 4A, rotational power is transmitted from a drive device to the rotating shaft 4A, but the auger 4 and the frame 1 are electrically insulated in this power transmission mechanism as well.

A device in which the power transmission mechanism is composed of, for example, a sprocket attached to the other end of the rotating shaft 4A and the output shaft of the drive device, and a chain hung on these sprockets, may include one or more of these sprockets. Both are fixed to each shaft via insulating bushings.

In FIG. 2, a conical hole 2 is formed on one end surface of the rotating shaft 4A.
1 is formed.

In addition, a contact needle 22 is connected to the casing 11 via an insulator 23.
is attached, and the tip of this contact needle 22 enters the hole 21 and contacts the rotating shaft 4A.

The contact needle 22 is kept in constant contact with the rotating shaft 4A by biasing the contact needle 22 in the direction of the rotating shaft 4A using a spring (not shown) or the like.

A lead wire 24 is connected to the contact needle 22.

The frame 1 of the rotary snow removal device or the vehicle to which this snow removal device is attached is equipped with a short circuit detector (not shown).

This short circuit detector detects electrical continuity between the lead wire 24 and the frame 1, and can be easily constructed by a circuit using a relay circuit or a switching transistor.

During snow removal work using this rotary snow removal device, if a tire chain or the like in the snow tries to get entangled with the auger 4 and comes into contact with both the auger 1 and the board 3 or frame 1, the short circuit detector A detection signal is output,
Tire chains and other objects that are about to become entangled are detected just before they become entangled.

Based on this detection signal, a warning is displayed using a buzzer or the like to have the operator manually stop the driving of the auger 4, etc., or by automatically stopping the drive based on the detection signal, metal foreign objects such as tire chains can be detected. It is possible to prevent the auger 4 from becoming entangled or clogging.

As described above, according to this invention, it is possible to detect metal foreign matter coming into contact with the rotating part of a rotary snow removal device, and to prevent entanglement or clogging of the rotating part.

Therefore, it is possible to prevent damage to the snow removal device and long-term interruption of snow removal operations due to such obstacles.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a perspective view of the entire rotary snow removal device, and FIG. 2 is an enlarged sectional view of the bearing portion of the rotating shaft of the auger. 1... Frame, 2A, 2B... Support arm, 3... Snowboard, 4... Auger, 4A... Auger rotation axis , 10...
・Bearing, 11... Bearing casing, 12, 1
4... Insulating bushing, 13... Annular insulator, 15... Insulating seat plate, 22...
・Contact needle, 24...Lead wire.

Claims (1)

[Scope of utility model registration request] A metal foreign object detection device for a low-rise snow removal device, in which an auger is insulated from a frame including a snowboard, and a detector is provided to detect a short circuit between the auger and the frame.