JPS6029470Y2 - Snow removal auger blade attachment device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a snow removal auger blade attachment device for a rotary snow removal device.

In a conventional rotary snow removal device, a rotary saw 1 is used as shown in Fig. 1.
The outer surface 3a of the shaft assembly 3 of the auger blade shaft 2 is brought into contact with the auger blade shaft 2, both flanges 1 and 3 are fixed with shear bolts 4, and the rotational driving force of the auger blade 5 is transmitted from the drive shaft 6 to the rotary saw 1. It was configured to be transmitted to the auger blade shaft 2 via the shear bolt 4.

However, when the snow (including earth and sand) shoved into the auger blade 5 causes a load greater than the set load to be applied to the blade shaft 2 and the shear bolt 4 breaks, a thrust force acts on the auger blade shaft 2, causing the shaft assembly 3 to move as shown by the chain line. As a result of the movement, a gap A is created between the rotary saw 1 and the shaft assembly 3, and snow enters the gap A.

Therefore, when installing four shear bolts 4, this gap A
After removing the snow that had gotten into the flange and bringing the flanges 1 and 3 closer to each other, it was necessary to attach them using the shear bolts 4, which made the attachment work complicated and the work efficiency poor.

In view of the above, it is an object of the present invention to provide a mounting device that can shorten the time required for mounting an auger blade.

An embodiment of the present invention will be described below with reference to FIGS. 2 to 4. In the figures, reference numeral 7 denotes a rotary snow removal device installed at the front of the vehicle body 8, and one end of the drive shaft 6 is equipped with a rotary saw. 1 are connected to each other via a shaft 6a, and an auger blade shaft 2 of an auger blade 5 is fitted onto the drive shaft 6, and a shaft assembly 3 formed at the end of the auger blade shaft 2 is attached to the rotary saw 1. The outer surface 3a of the rotary saw 1 is in contact with the outer surface 3a of the rotary saw 1, the engaging piece 9 is fixed to the outer periphery of the rotary saw 1, and the engaging claw 10 of the engaging piece 9 is rotatably abutted on the inner surface 3b of the shaft assembly 3. has been done.

Note that the engagement piece 9 has two members 9a and 9 shaped like a cross-section.
b is fixed with a bolt 11 to form a U-shaped cross section, the outer end 12 of the engagement piece 9 is fixed to the outer surface 1a of the rotary saw 1 with a bolt 13, and the inner end of the engagement piece 9 is fixed to the outer surface 1a of the rotary saw 1. engaging claw 10
is formed.

Then, it penetrates the rotary saw 1 and the shaft assembly 3, and the both flange 1°3
A groove 4a is formed in the center of the shear bolt 4 for fixing the.

Note that 14 is a thickness adjustment spacer interposed between the engagement piece 9 and the rotary saw 1.

In the above configuration, when the shear bolt 4 breaks, a thrust force acts and the shaft assembly 3 of the auger blade shaft 2 tries to separate from the rotary saw 1. 1
2 and the engaging claw 10, both flange 1, 3
There is no gap between them, and snow does not get between the two collars 1 and 3.

Therefore, the shear bolt 4 can be easily replaced and installed.

As is clear from the above explanation, the present invention provides a device in which one side of the auger blade shaft assembly is in contact with a rotating collar and both collars are fixed with shear bolts, and the device engages with the outer peripheral part of the rotating collar. The piece is fixed, and the engaging claw of the engaging piece is rotatably abutted on the other side of the shaft assembly.

Therefore, according to the present invention, with only a simple structure of the retaining piece,
It is possible to prevent snow from entering between the rotating collar and the frame when cutting the shear bolt, and a new shear bolt can be easily installed, thereby shortening the installation time.

[Brief explanation of the drawing]

Fig. 1 is a front sectional view showing the attachment part of the auger blade shaft in a conventional rotary snow removal device, Fig. 2 is a perspective view of the rotary snow removal device showing an embodiment of the present invention, and Fig. 3 is a front view of the same. 4 are longitudinal cross-sectional views showing the attachment portion between the rotary collar and the frame assembly. 1: Rotating collar, 2: Auger blade shaft, 3: Shaft assembly, 3a: Outside surface, 3b: Inside surface, 4 Niji air bolt, 5: Auger blade.

Claims (1)

[Scope of utility model registration request] In a device in which one side of a shaft assembly 3 of an auger blade shaft 2 is brought into contact with a rotary saw 1 and both flanges 1 and 3 are fixed with shear bolts 4, an engaging piece 9 is fixed to the outer periphery of the rotary saw 1. , an auger blade attachment device for snow removal, in which an engaging claw 10 of the engaging piece 9 is rotatably abutted on the other side of the shaft assembly 3.