JPH036652Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a snow blower in which a snow-throwing tube is arranged at the upper part of the blower section so as to be freely rotatable, so that snow can be thrown in a desired direction. be.

[Conventional technology]

A worm and worm wheel mechanism is used to rotate the snow throwing tube to throw snow in a desired direction (for example, see Japanese Utility Model Publication No. 51-34605).

The advantage of the worm and worm wheel mechanism is that the worm wheel can be rotated by the rotation of the worm, and the direction of the snow throwing tube can be adjusted. The point is that it will not be rotated unnecessarily.

[The problem that the idea attempts to solve]

However, since snow blowers are used outdoors in cold weather where it is snowing, if the worm and worm wheel are wet, they may freeze and become inoperable, especially when not in use or at night. There is. Furthermore, if there is a large amount of snow, there is a risk that the snow will pass over the top of the auger and adhere to the worm and worm wheel mechanisms, causing them to freeze and become similarly inoperable.

The present invention has been made to solve the above problems.

[Means to solve the problem]

For this purpose, the present invention provides a snow throwing tube 23 which is located at the upper part of the blower section and is horizontally rotatable, and whose rotation is adjusted by a worm 36 and a worm wheel 34. , a worm wheel gear portion 3 is provided on the lower side of the periphery of the worm wheel 34 provided on the snow throwing tube 23 side.
3, and the worm 36 provided on the blower part side is positioned below and meshed with the worm wheel gear part 33, and the worm wheel 34
An umbrella-shaped worm cover 38 provided on the snow throwing tube 23 side covers the outside of the outer periphery of the worm 3 on the blower side.
The snow cover 37a extends from the worm shaft support 37 which pivotally supports the worm 36, covers the worm 36, and covers the outside of the snow cover 37a provided close to the worm wheel gear part 33.

[Effect]

With the above configuration, the worm cover and snow cover prevent snow from entering, and completely prevent snowflakes from adhering to the worm and worm wheel mechanism, or from getting wet and freezing. The rotation of the snow throwing tube can always be adjusted smoothly.

〔Example〕

Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a snow blower, and a drive section 3 is disposed on a running section 2, and a snow removal section 4 is arranged in front of these.The drive section 3 is connected to the rear end of its frame 5. is pivotally attached to the rear end of the traveling frame 6 of the traveling section 2, thereby being connected to the traveling section so as to be able to move up and down vertically.
The snow removal section 4 is pivotally attached to the frame 5 via a connecting mechanism so as to be able to roll left and right.

The drive unit 3 has an engine 7 mounted on its frame 5, and has a belt transmission mechanism so as to transmit the rotation of an output shaft 8 taken out from the front part of the drive unit 3 to a bevel gear box 9 disposed at the rear of the engine 7. 10, a power transmission device consisting of a universal joint 11, etc. A transmission device 12 is disposed at the rear end of the running section 2 so as to input the output from the bevel gear box 9 to which power is transmitted in this way, and a belt transmission mechanism having a tension clutch 13 between them. 14 are configured. Left and right crawler drive sprockets 18 are attached to the output shaft of this transmission device 12, and a rolling wheel 19 is attached to the front end of the traveling frame 6, and an idler wheel 20 is pivotally attached to the rear thereof. These crawler drive sprockets 18, rolling wheels 1
9. A crawler 21 is wound around the idler wheel 20, and by operating various operating levers arranged on the upper part of the transmission device 12, the traveling section 2 can perform crawling movements such as forward movement, backward movement, and left and right turns. It is configured.

The snow removal unit 4 is equipped with a snow throwing tube 23 rotatably in the horizontal direction on the top of a horizontally cylindrical blower case 22 whose rear end is sealed. A scraper 24 having a communicating opening is mounted integrally.
The scraper 24 is curved so that its upper and lower ends face forward, and side walls 25, 25 are provided between them.
In between, upper and lower augers 26 and 27 are rotatably supported. And the above blower case 2
Power is transmitted from the pulley 29 via a drive shaft 28 passing through the auger 27, and is transmitted to the drive shaft of the auger 27 via a bevel gear box 30.
Note that power is transmitted to the pulley 29 from the output shaft 8 of the engine by belt transmission. The drive shaft 28
A blower blade 31 is provided on the auger 27.
Disperse the shoveled snow and turn it into a powder mist using the snow removal tube 2.
3 to the side of the snow blower 1.

A shaft bearing part 32 is provided on one side of the top of the blower case 22, and a ring-shaped worm wheel 34 having a worm wheel gear part 33 formed on the lower side of the periphery is rotatably supported here.
On the other hand, the snow removal tube 23 is fixedly attached.
A stage 35 is provided on one side of the blower case 22.
is provided, and a worm shaft support 37 that pivotally supports the worm 3 is installed here. A snow cover 37a extends from the worm shaft support 37 to cover the worm 36 from the outside and shield it from snow.
The worm 36 is the worm wheel 3.
The cover 37a is meshed with the gear part 33 of No.4.
The tip thereof is close to the worm wheel gear portion 33. Further, an umbrella-shaped worm cover 38 is provided outside the outer periphery of the worm wheel 34, and the snow cover 37a is attached from the outside.
Worm 36 and worm wheel gear part 33
is covered with a snow cover 37a and a warm cover 38.

In addition, in the figure, the reference numeral 39 is a guide piece for preventing the worm wheel 34 from coming off from the bearing part 32.

In the snow blower 1 having such a configuration, the snow removal section 4 is operated while the traveling section 2 is moved forward, and the augers 26, 2 are operated.
7 and the scraper 24, the snow is forcefully conveyed by the wind power of the blower, and is thrown upwardly on one side of the aircraft body through the snow throwing tube 23. Snow removal work is performed in this way, but if the snow throwing direction of the snow throwing tube 23 is to be changed, the worm 36 can be rotated using a handle (not shown), and the worm wheel 34 can be turned.

In this case, the mechanism of the worm 36 and the worm wheel 34 is double covered by the worm cover 38 and the snow cover 37a, so it is completely isolated from the outside, and the snowflakes are not transferred to the worm 3.
6. Since it does not stick to the worm wheel gear part 33, it does not get wet, and this part can be prevented from freezing not only when using a snow blower but also when left outdoors, so that it can be used whenever needed. Thus, the snow throwing tube 23 can be smoothly rotated.

[Effect of idea]

As explained above, according to the snow blower of the present invention, the worm 36 and the worm wheel 34 for horizontally rotating the snow throwing tube 23 have the worm wheel gear part 33 provided on the lower surface side of the worm wheel 34, 36 is positioned below the worm wheel gear part 33, first, the outside of the outer periphery of the worm wheel 34 is covered with an umbrella-shaped worm cover 38, and further, with this cover 38, the worm 3
Since the snow protection cover 37a extends from the worm shaft support 37 that pivotally supports the worm 36 and covers the outside of the worm 36, the lower part of the outer circumference of the worm wheel gear part 33 is covered, and the worm 36 and the worm wheel gear part 33 is double covered and can be completely isolated from the outside with a simple structure, preventing snowflakes from adhering to the worm 36 and the worm wheel gear part 33 or entering the worm shaft support 37. The snow throwing tube 23 can be rotated smoothly without any problems. Further, since the meshing portion between the worm 36 and the worm wheel gear portion 33 is covered twice, freezing is prevented and the snow throwing tube 23 can be operated smoothly. Furthermore, the worm 36 is connected to the worm wheel gear section 33.
Since the cover is engaged on the lower side, the outer diameter of the cover can be reduced, making it lightweight and compact.

[Brief explanation of drawings]

Figure 1 is a side view showing one embodiment of the present invention;
The figure is a longitudinal sectional view of the main part. 1... Snow blower, 2... Traveling section, 3... Drive section,
4... Snow removal section, 5... Frame, 6... Traveling frame, 7... Engine, 8... Output shaft, 9... Bevel gear box, 10... Belt transmission mechanism, 1
1...Universal joint, 12...Mission device, 13...Tension clutch, 14...
... Belt transmission mechanism, 18 ... Sprocket, 19
... Rolling wheel, 20 ... Idler wheel, 21 ... Crawler, 22 ... Blower case, 23 ... Snow throwing tube,
24...Scraper, 25...Side wall, 26, 27
... Auger, 28 ... Drive shaft, 29 ... Pulley,
30...Bevel gear box, 31...Blower blade, 32...Shaft bearing part, 33...Worm wheel gear part, 34...Worm wheel, 35...Stage, 36...Worm, 37...Worm shaft support, 37a... ...Snow cover, 38...Warm cover, 39...Guide piece.

Claims (1)

[Claims for Utility Model Registration] A snow-throwing tube 23 is disposed above the blower section so as to be freely rotatable in the horizontal direction, and the rotation of the snow-throwing tube 23 is adjusted by a worm 36 and a worm wheel 34, A worm wheel gear portion 33 is provided on the lower side of the periphery of the worm wheel 34 provided on the snow throwing tube 23 side.
The worm 36 provided on the blower section side is positioned below and meshed with the worm wheel gear section 33, and the outer peripheral part of the worm wheel 34 is provided on the snow throwing tube 23 side. Umbrella-shaped warm cover 38
This worm cover 38 extends from the worm shaft support 37 that pivotally supports the worm 36 on the blower section side, covers the worm 36, and covers the outside of the snow cover 37a provided close to the worm wheel gear section 33. A snow blower characterized by being configured to cover.