JPS6145223Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a snow-throwing duct installed in a snowplow.

Traditionally, rotary snow blowers have been divided into two stage types, consisting of an auger for shoveling snow and a blower for throwing snow, a one-stage auger-type type without a blower case, and a simple type with a fixed blower case. There are things etc. The former two-stage rotary snow blower has a blower case 2 attached to the snow removal frame 1 so as to be rotatable left and right, as shown in Figures 1 and 2. Snow can be directly thrown, or snow can be thrown by turning the duct 3 upward and attaching the chute 4 above it.

However, the latter is a one-stage auger-type rotary snowplow with only an auger and no blower case (see Figure 3), or a rotary snowplow in which the blower case 2 is fixed to the snow removal frame 1 with bolts or welding ( (see Fig. 4) can only throw snow with the chute 4, but cannot directly throw snow by rotating the blower case left and right.
This has the disadvantage that the snow cannot be thrown far.

The present invention was developed in view of the above circumstances, and its purpose is to develop a one-stage auger-type rotary snowplow without a blower case.
To provide a snow throwing duct capable of blowing snow far away even with a simple rotary snow blower with a fixed blower case. Hereinafter, the present invention will be explained in detail with reference to the drawings.

5 and 6 show an embodiment of the present invention, 11 is a snow-throwing duct, and this snow-throwing duct 1
1 is made up of a plurality of hollow truncated cone-shaped ducts 12 stacked one on top of the other. The stacked ducts 12 are then connected to the fifth position by pins 13.
In the figure, they are connected so that they can bend left and right. In addition, a cylinder 14 is connected to a pin 1 between each duct unit 12.
5, and between the vertically adjacent cylinders 14, 14, the base end of the upper cylinder 14 and the rod 14 of the lower cylinder 14 are attached.
The tip of the cylinder 14 is rotatably connected by the pin 15, and when the rod 14a of the cylinder 14 contracts, the snow throwing duct 11 turns to the right, and when the rod 14a of the cylinder 14 extends, the snow throwing duct 11 turns to the left. It is configured to bend.

Further, 16 is a snow removal frame, and shaft support members 17 are provided at the center and both sides of this snow removal frame 16. A rotary shaft 18 is rotatably attached between these shaft support members 17. and rotation axis 1
8 has an auger 19 fixed to it, and a rotating shaft 18
The rotation causes the auger 19 to rotate and shovel snow into the snow blower. Further, a snow throwing duct 11 is provided at the rear of the snow removal frame 16, and the snow shoveled into the snow removal machine by the auger 19 is transferred to the snow removal duct 11.
snow is thrown outside.

Next, the operation of the snow throwing duct 11 according to the present invention will be explained.

When removing snow with a rotary snowplow equipped with the snow-throwing duct 11, the rotating shaft 18 is rotated at high speed by a drive device (not shown) while the rotary snowplow is moved forward at a slow speed. Then, the auger 19 attached to the rotating shaft 18 rotates at high speed and shovels snow into the rotary snow blower. The snow taken into the rotary snow blower is thrown outside through the snow throwing duct 11 by the centrifugal blade 19a at the center of the auger 19. If the rod 14a of the cylinder 14 is retracted, this snow throwing duct 11 will turn to the right in Figures 5 and 6, so snow will be thrown to the right, and if the rod 14a of the cylinder 14 is extended, it will turn to the left. Therefore, snow is thrown to the left.

In this embodiment, a cylinder 14 is provided between each duct unit 12 as a telescoping mechanism for bending the snow throwing duct 11 left and right, but as shown in FIGS. 21 may be attached. This rage tongue mechanism 20 includes a duct unit 12, a link 22,
22 and the link 23 crossed in an X shape,
23 are rotatably attached with pins 24, and the lower ends of the links 22, 22, both ends of the links 23, 23, and the links 25, 2
5 are interconnected by pins 26, respectively, and
The lower ends of the links 25, 25 are rotatably attached to the tip of the rod 21a of the cylinder 21 with a pin 27, and each link 22, 23,
25 is made of a flexible elastic body such as a spring plate, and a play (a loose fitting gap) is formed in the joint portion of each link 22, 23, 25 (portion of pins 24, 26). ing. Further, the lower end of the duct unit 12 at the bottom of the snow throwing duct 11 is fixed to the snow removal frame 16 via a support member 28. moreover,
A base end portion of the cylinder 21 is rotatably connected to the snow removal frame 16. Therefore, when the rod 21a of the cylinder 21 is extended, the range tongue mechanism 20
is contracted and deflected to the right in FIG. 7, causing the snow throwing duct 11 to curve to the right. Furthermore, when the rod 21a of the cylinder 21 is retracted, the tong mechanism 20 is extended and deflected to the left, causing the snow throwing duct 11 to bend to the left. Further, in this embodiment, the duct unit 12 has been described using a hollow truncated cone shape, but it may also be a hollow truncated pyramid shape.

As explained above, in this invention, multiple hollow truncated cone-shaped ducts are connected so that they can bend left and right, so a single stage without a blower case can be used to operate an auger-type rotary snowplow or a simple type blower. Even with a rotary snow blower with a fixed case, it is possible to directly throw snow without using a chute, and the snow can be thrown far away, and the snow throwing duct can also be used as a simple chute with the chute removed. have

[Brief explanation of the drawing]

Figures 1 to 4 show conventional rotary snowplows. Figure 1 is a front view of a two-stage rotary snowplow with the auger removed, and Figure 2 is a two-stage rotary snowplow with the auger removed.
Side view of the stage rotary snowplow, Figure 3 is 1
FIG. 4 is a side view of a rotary snowplow with a stage auger type, FIG. 4 is a side view of a rotary snowplow with a fixed blower case, and FIGS. 5 and 6 show an embodiment of the present invention. The figure is a front view, Figure 6 is a front view of the snow thrower duct attached to the snowplow, and Figure 7 is a front view.
8 and 8 show other embodiments of the present invention,
FIG. 7 is a front view, and FIG. 8 is a side view. 11...Snow throwing duct, 12...Single duct, 1
4...Cylinder, 20...Rage tongue mechanism, 2
1...Cylinder.

Claims (1)

[Scope of utility model registration request] A plurality of hollow frustum-shaped ducts are stacked, the plurality of ducts are connected so as to be bendable from side to side, and an expansion and contraction mechanism is provided for bending the plurality of ducts from side to side. snow-throwing duct.