JPS63251511A - Snow removing apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a snow removal device.

(Prior Art) Devices as shown in FIGS. 16 and 17 can be cited as devices that have been widely commercially available as compact snow removal devices. As shown in the figure, this device rotatably supports a horizontal rotating shaft 42 on both side walls of a casing 41 that has large openings at the front and bottom. screw 43
is attached to form an auger, and a blower chamber 44 is attached to the back of the casing 41, and an impeller 45 that is driven to rotate around an axis substantially orthogonal to the horizontal rotation axis 42 is attached to the blower chamber 44. The blower chamber 44 is communicated with the inside of the casing 41 through an opening 46.
A snow-throwing opening (not shown) is formed at the upper part of the inside,
A chute 47 is provided there. This device uses a ribbon screw 43 to drive the snow in front of the snow into a casing 41 while crushing it by rotation of a horizontal rotating shaft 42, and drives the impeller 45 to send the snow to the chute 47 through a snow throwing spout using centrifugal force. It has been like throwing snow.

In addition, as another conventional example of a small snow removal device, there is a
The device described in Japanese Patent No. 150813 can be mentioned. As shown in FIG. 18, in this device, a second horizontal rotation shaft 54 is fitted to the rear end outer circumference of a first horizontal rotation shaft 53 that extends forward (to the left in the figure) from a main body 51. death,
An impeller 55 is attached to the outer circumference of the second horizontal rotation shaft 54, and a screw 56 is attached to the outer circumference of the first horizontal rotation shaft 53 on the front end side. The first and second horizontal rotation shafts 53 and 54 have a drive #52 and a separate speed reduction mechanism 6.
3.64, and the screw 56 is rotated at a lower speed than the impeller 55. Therefore, the screw 56 is used for removing hardened snow.
While rotating at a low speed, the snow is crushed in front with its large horns and shoved backwards, and the impeller 55 throws the snow into the snow dumping opening 62.

Other conventional small snow removal devices include Japanese Patent Application Laid-Open No. 57-3
The device described in Japanese Patent No. 3607 can be mentioned. As shown in FIG. 19, this device is provided with an opening 72 at the front of a casing 71, and a snow-throwing guide portion 73 extending diagonally forward and upward from the upper edge of the casing 71 defining the opening 72. On the other hand, an impeller 75 is attached to the outer periphery of a horizontal rotating shaft 74 rotatably supported between both sides of the casing 71. At 75, the snow in front is shoveled into the casing 71 from the opening lower 2, and the snow is thrown diagonally upward along the snow throwing guide 73.

(Problems to be Solved by the Invention) In each of the above conventional examples, the snow removal range is limited to only the front part of the device (see Fig. 1(a)).
(See (b)), when removing snow from the side parts of the device, return it to its original position after finishing snow removal from the front part.
From there, the equipment must be moved to an area adjacent to the area that has been cleared, and the snow removed from the area in front of the equipment, which must be repeated. It has the disadvantage that the range is also wide.

In addition, in the apparatus shown in FIGS. 16 and 17, the rotation axis of the horizontal rotation shaft 42 and the rotation axis of the impeller 45 are configured to be driven to rotate in a state substantially orthogonal to each other. The device described in Japanese Patent No. 150813 is configured to change the rotational speed of the first horizontal rotation shaft 53 and the second horizontal rotation shaft 54, and therefore various mechanisms for realizing such a configuration are required in the device. The problem is that the overall weight of the device increases, making it very inconvenient to handle.

Furthermore, the device described in Japanese Patent Application Laid-Open No. 57-33607 has an extremely simple structure in which snow is shoveled by an impeller 75, and the device as a whole is lightweight and can be used as a portable device. Yes, it is possible, but since it is configured so that only the impeller 75 scrapes the snow,
There is a problem in that the ability to crush relatively hard snow is insufficient.

This invention was made in order to eliminate the above-mentioned conventional drawbacks, and its purpose is to be able to remove snow over a wide range without expanding the range of movement of the operator, and to reduce the weight of the device. To provide a snow removal device which is capable of crushing hard snow.

(Means for Solving the Problems) Therefore, the snow removal device of the present invention includes a main body, a drive source attached to the main body, and a drive source that is pivotally supported by the main body and rotates around a horizontal axis by the drive source. It comprises an impeller that is rotationally driven, an arcuate scraping blade that is rotationally driven coaxially with the impeller at a position on the tip side of the impeller, and a casing that covers the impeller and the arcuate scraper blade, The casing has openings at the front and sides, and a snow-throwing opening at a portion corresponding to the impeller.

(Function) In the snow removal device described above, when removing snow from the front and side portions of the device, as shown in Fig. 2(a) and (b), the operator first supports the main body and uses the drive source to move the blades. The wheel and the arc-shaped scraping blade are driven to rotate. Then, the device is swung leftward or rightward (see FIG. 2(b)).

In other words, the device is swung from side to side to force snow into the side openings of the casing. In addition to the above operations, the operator also pushes the device forward (see Figure 2
)reference). In this case, snow will enter the inside of the casing from the side opening and the front opening (see Figure 2 (a)), but this snow will be crushed and scraped in by the arcuate scraping blade, or scraped by the impeller. Then, centrifugal force is applied by the impeller and the snow is thrown from the snow throwing opening.

(Embodiments) Next, specific embodiments of the snow removal device of the present invention will be described in detail with reference to the drawings.

3 to 9 show a first embodiment of the present invention. In FIG. 3, ■ is a snow removal device, 2 is a main body to which an engine 3 is attached, and this main body 2 includes a drive shaft built-in pipe 4 connected to the engine 3, and a drive shaft built-in pipe 4
A deceleration mechanism 5 is removably attached to the distal end of the deceleration mechanism 5.

A horizontal rotary shaft 6 rotatably driven by the engine 3 is supported in a cantilever state in the front-rear direction by the speed reduction mechanism 5, and is connected to the drive shaft in the pipe 4 via, for example, a bevel gear. There is. An impeller 7 is attached to the central outer periphery of the horizontal rotating shaft 6, and the impeller 7 rotates coaxially with the impeller 7 at the tip side of the horizontal rotating shaft 6. A driven arcuate scraping blade 11 (hereinafter referred to as
(abbreviated as an auger) is provided. This auger 11
As shown in FIGS. 4 and 5, the horizontal rotation axis 6
A stem 8 extending radially outward is provided on the outer periphery on the tip side of the impeller 7, and an arc-shaped rotary blade 9 as shown is fixed to the upper end of this stem 8. It is made up of As shown in FIGS. 6 and 7, the auger 11 has a rotary blade 9 similar to the above fixed between the upper end side of the support stem 8 and the tip of the impeller 7. You may also do so. The pitch of the rotary blades 9 in the auger 11 is set according to the above-mentioned Utility Model Application No. 55-150813 so that snow can be crushed well even when the impeller 7 rotates at the same speed, that is, at high speed.
The pinch is set smaller than the pinch of the screw 56 in the conventional device described in the publication (see FIG. 18). On the other hand, the speed reduction mechanism 5 includes the impeller 7 and the auger 1.
A casing 14 covering 1 is attached. The casing 4 forms a blower 23 together with the impeller 7, and as shown in FIGS. 3 and 8, a front opening 15 is provided at the front corresponding to the auger 11. A side opening 16 is formed at one side corresponding to the impeller 7, and a snow throwing opening 17 is formed at an upper position corresponding to the impeller 7, to which a chute 20 is attached. ing. The walls of the casing 14 defining each opening 15, 16 have an auger 11 and an impeller 7, as shown in FIG. 8a.
This prevents snow taken in from the side openings 16 from jumping out from the front opening 15.

Next, the operating state of the snow removal device having the above configuration will be explained.

The operator first supports the drive shaft built-in pipe 4 directly or via a handle, etc., and then drives the impeller 7 and auger 11 to rotate with the engine 3. For example, as shown in FIG. 9, when removing snow in front of the device 1, first push the device l forward (see arrow A in FIG. Add snow. At this time, the auger 11 crushes and scrapes the snow, sends it toward the impeller 7, and the centrifugal force exerted by the impeller 7 causes the snow to be thrown from the chute 20 through the snow throwing spout 17. . Further, when removing snow from the side of the device 1 (see arrow B in FIG. 9), the device 1 is swung sideways to push the snow from the side into the side opening 16. At this time, the blades of the impeller 7 scoop up the snow and directly throw it from the chute 20.

As described above, in the first embodiment, the snow in front of the device l is shoveled and thrown through the front opening 15 while being crushed by the auger 11, and the snow on the side is passed through the side opening 16 to the blades of the impeller 7. Since the device is designed to shovel and throw snow at the front, the worker can move on to clearing the snow on the sides after clearing the snow in front of him, or he can move the snow on the sides by swinging the device from side to side. It is also possible to move the snow forward while removing snow (see Figure 2 (a) and (b)). Therefore, when removing snow, workers can cover a wide area without expanding their movement range. It is possible to remove snow. Therefore, in places where footing is poor, such as when removing snow from a roof, the worker does not have to move much from a fixed position, and as a result, it is possible to perform snow removal work safely. In addition, in areas with heavy snowfall, even when snow is as thick as 50 m to 1 m accumulated on residential roads other than public roads, passageways for entrances and exits inside mansions, and roads leading out of cars, the above-mentioned It is possible to remove snow by removing snow from the front and sides and gradually working downward.

Further, since the auger 11 is coaxial with the impeller 7 and rotates at the same speed, no special interlocking mechanism is required, and the device is therefore lightweight and easy to handle. Therefore, for example, when removing snow from roofs as mentioned above or removing snow in areas with heavy snowfall, workers can easily carry the equipment, improving safety and work efficiency. .

Furthermore, since the snow in front of the device 1 is crushed by the auger 11, a sufficient snow removal effect can be achieved even when the snow is hard.

Further, in the above embodiment, when snow is shoveled by the auger 11 and the impeller 7, a reaction force is received from the snow, and the reaction force acts to push the snow removal device 1 in the snow removal direction. The operator's operating force for the device 1 will be reduced.

On the other hand, when there is no need to remove snow, such as in the summer, the reduction mechanism 5 can be removed from the tip of the drive shaft built-in pipe 4, and other reduction mechanisms and cutting blades can be attached to the lawn mower (brush cutter). You can also use it.

Next, a second embodiment of the present invention will be described based on FIGS. 10 to 14. As shown in FIG. 10, the auger lla of this device 1 moves from the front end of the horizontal rotation shaft 6a to the horizontal rotation shaft 6a.
a shaft 12 extending coaxially with a, and this shaft 12
The ribbon screw 13 is attached to the outer periphery of the ribbon screw 13. As shown in the figure, the length of the ribbon screw 13 is such that it covers a relatively wide area from the front to the rear of the casing 14. On the other hand, casing 14
As shown in FIGS. 10, 13, and 14, a has openings 15 and 16 in the front and one side in a portion corresponding to the auger lla. Note that the tip of the auger 11a projects slightly outward from the front opening 15. Further, as shown in FIGS. 13 and 14, the upper part of the casing 14a is formed into a mountain shape forming a ridgeline in the front-rear direction (axial direction), and the snow taken in from the opening 15. A plurality of fins 21, 21 are spirally attached to cooperate with the auger lla to better guide the impeller 7a. In this case, each fin 21, 21 is attached with its lower end inclined toward the rear of the device as shown in FIG. 10, but it may also be installed without being inclined. In this way, in the second embodiment, the snow in front of the device 1 and the snow on the sides are both crushed by the auger and thrown by the shoveling impeller 7a, so when the snow is hard, However, it is possible to clear snow over a wide area. Moreover, since the fins 21.21 are arranged in a spiral manner on the upper part of the casing 14a, the crushed snow is smoothly guided toward the impeller 7 along these fins 21.21.

Next, a third embodiment of the present invention will be shown based on FIG.

This snow removal device has two parts on both sides of the deceleration mechanism 5.
A pair of horizontal rotating shafts 6.6 are extended in a cantilevered state, and an impeller 7.7 similar to that of the first embodiment is attached to the central outer circumference of each horizontal rotating shaft 6.6. Augers 11.11 are provided on the opposite end side of the impeller 7.7 from the speed reduction mechanism 5, respectively, and are driven to rotate coaxially with the impeller 7.7. Similar to the first embodiment, the auger 11.11 can also be constructed by attaching arc-shaped rotary blades 9 to the stem 8 and the blades of the impeller 7 (see Fig. 6 and (see FIG. 7), or it can also be constructed by being attached only to the support stem 8 (see FIGS. 4 and 5). The auger 11.11 and the impeller 7.7 are then covered by a casing 14, on both sides corresponding to the auger 11.11 and at the front corresponding to the impeller 7.7.
Openings 15, 15, 16, and 16 are formed in each of the holes 15, 15, 16, and 16, and snow throwing holes 17, 17 are formed in the upper positions corresponding to the impellers 7, 7, and the chute 2 is formed therein.
0 is attached. In the snow removal device with the above configuration,
The snow in front of the device is shoveled and thrown with the impeller 7.7, and the snow on one side of the snow on either side is crushed with one of the augers 11, and the other snow is crushed with the other auger 11. It is configured to scrape and throw snow while moving the device, so if you shake it in one direction to remove snow without moving it forward, and then swing it in the other direction from that position, the snow in the other direction will be removed. Therefore, it is possible to further improve the efficiency of snow removal work.

In the second and third embodiments described above, the same parts as in the first embodiment are indicated by the same reference numerals, and their explanations are omitted. It goes without saying that the second and third embodiments also provide substantially the same effects as the first embodiment.

(Effects of the Invention) According to the snow removal device of the present invention, the operator can remove snow from a wide area in the front and side portions of the device by simply moving the device forward while swinging the tip side of the device from side to side. .

Therefore, it is no longer necessary for the worker to move widely as in the past, and the labor required for the worker can be reduced. Further, since the arc-shaped scraping blade is driven to rotate coaxially with the impeller, the device can be made lighter and more compact, and at the same time has the ability to crush hard snow.

[Brief explanation of the drawing]

Figure 1 (a) is a conceptual diagram of the snow removal status of a conventional snow removal device.
Figure (b) is a conceptual diagram of the snow removal range of the same snow removal device, and Figure 2 (a)
FIG. 2(b) is a conceptual diagram of the snow removal situation of the snow removal device of this invention.
3 is a conceptual diagram of the snow removal range of the snow removal device, FIGS. 3 to 9 show a first embodiment of the snow removal device of the present invention, FIG. 3 is a longitudinal sectional view thereof, and FIGS. 6 and 7 are front views and side views showing other aspects of the auger, respectively. FIG. 8 is a perspective view of the casing, and FIG. 8a is a partial side view and front view showing one aspect of the auger. Figure 6~
FIG. 8 is an assembled overview diagram of each part, FIG. 9 is an explanatory diagram of the operating state of the above device, and FIGS.
10 is a vertical side view thereof, FIG. 11 is a perspective view for explaining the direction of snow discharge, FIG. 12 is a front view of the above device, FIG. 13 is a perspective view of the casing, and FIG. 14 is a perspective view of the device. FIG. 15 is a cross-sectional view of the casing, FIG. 15 is a perspective view showing a third embodiment of the present invention, and FIGS. 16 to 19 are explanatory views of a conventional snow removal device. ■...Snow removal device, 2...Main body, 3...Engine,
7.7a... impeller, 11, lla... arcuate scraping blade (auger), 14.14a... casing, 15... front opening, 16... side opening, 17...・
・Snow throwing mouth.

Claims (1)

[Claims] 1. A main body, a drive source attached to the main body, an impeller that is pivotally supported by the main body and rotated around a horizontal axis by the drive source, and an impeller at a position on the tip side of the impeller. It comprises an arcuate scraping blade that is rotationally driven coaxially with the wheel, and a casing that covers the impeller and the arcuate scraping blade, and the casing has openings at the front and sides, and the blade A snow removal device characterized by having a snow throwing opening in a part corresponding to a car.