JPH041314A - Snow-clear machine - Google Patents

Abstract

PURPOSE:To miniaturize and lighten an apparatus, by providing a low speed axial flow fan and a high speed centrifugal fan on the same axial line by the interposition of a speed regulating mechanism at the front and rear sides within the casing having a snow intake and a discharging outlet. CONSTITUTION:A casing 2 providing with a snow intake 21 at the front face and a discharge outlet 23 at the rotary outer periphery of a high speed centrifugal fan 32 and a driving part 3 composed of a low speed axial fan 31 and a high speed centrifugal fan 32 are equipped on the upper face of the base 11. When the driving motor 33 is driven, piled snow is sucked from the snow intake 21 into the casing 2 to conduct to the back side by to the axial impeller 312. When the snow colliding with the rotary shell 321 is pushed forward to the front face of the axial flow impeller 312 by the snow cutter 313 to convey to the back face of the axial flow impeller 312. And further, the snow is ejected from the discharge outlet 23 by the centrifugal impeller 322 to be discharged into the outside of the apparatus through the chute 24.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a small and lightweight snow blower.

(Prior Art) Snow removers are known to have various structures, but they basically consist of a snow intake section and a snow discharge section. The lightning intake section of conventional snow blowers is equipped with an auger that is horizontal to the direction of movement of the machine, and as the snow is taken into the machine as the machine moves forward, the snow is taken into the center by the snow blower. The snow discharge section is equipped with a horizontal and vertical shaft type blower provided on the back of the auger, and blows the snow scraped up by the auger out of the machine. In addition, as a special form, a snow catcher with a snow discharge part provided in the center of the auger is composed of a guide and a protruding wing piece that is located within the guide and rotates together with the auger shaft. It is also known that
No. 4889).

(Problem to be Solved by the Invention Wi) Among the conventional snow blowers described above, those equipped with a blower having an auger and a drive shaft perpendicular to the auger have a problem in that the drive shaft of the blower is extended to the auger rotating shaft position. The rotary drive is transmitted to the auger shaft using a bevel gear, a worm gear, etc., and two mechanisms with different drive shaft directions are required, which increases the size of the entire machine. As the aircraft becomes larger, it becomes impossible to use a snow blower to remove lightning from a roof, for example, and its operability becomes inferior. In addition, a model in which the auger and snow splashing are carried out on the same shaft can achieve downsizing, but requires a transmission mechanism using a chain on the side of the auger shaft to rotate the auger, etc. There will be a width part that is not related to snow removal that will get in the way of progress, and the auger, which requires high torque to scrape up snow, and the flip-up blade, which requires high speed to blow away snow, will be on the same axis. In order to operate both effectively, a high horsepower drive source is required.

Therefore, the present invention aims to provide a snow blower that is small in size and lightweight.

(Means for Solving the Problems) A snow blower according to the present invention includes a casing provided with a snow intake port in the front part and a snow discharge port provided in the rear part wall, and a snow remover disposed in the front and rear parts of the casing, and The present invention is characterized by comprising a low-speed axial fan and a high-speed centrifugal fan that are arranged on the same axis with a mechanism interposed therebetween.

(Function) As the aircraft moves forward, snow that enters the casing through the snow intake port is sent to the high-speed centrifugal fan section on the rear side by the low-speed axial fan, and is then discharged from the discharge port to the continuous section by the high-speed centrifugal fan. It is something.

(Example) Next, examples of the present invention will be described.

<First Embodiment> FIGS. 1 to 6 show the first embodiment, and the snow blower according to this embodiment has a body 1. Casing part 2. The machine body 1 has a driving part 3, a slanting base 11, and a handle 2, and the casing part 2 and the driving part 3 are mounted on the upper surface of the base 11. The casing part 2 is formed at the front part of the base 11, has a snow intake port 21 therein, and has a peripheral wall 22 adjacent to the rotating outer peripheral parts of a low-speed axial fan 31 and a high-speed centrifugal fan 32, which will be described later. , high-speed centrifugal fan 32
A discharge port 23 is provided on the outer circumferential portion of the rotation, and a shutter 24 communicating with the discharge port 23 is provided. The drive unit 3 is the low-speed axial fan 31 described above. High speed centrifugal fan 32. Drive source 3
3 and a speed reduction mechanism 34, the low-speed axial fan 31 has axial flow blades 312 protruding from the outer periphery of a rotating body 311, snow faces 313 protruding from the front surface of the rotating body 311, and a snow face 313 protruding from the front of the rotating body 311. The low-speed axial flow fan 31 has centrifugal blades 322 installed around a rotating body 321, and its central axis is located on the back side of the low-speed axial flow fan 3I. It is provided so as to coincide with the fan 31, and its rotating outer peripheral portion faces the discharge port 23. The drive source 33 is a motor or engine connected to a suitable power source. The fans 31 and 32 are driven through a speed reduction mechanism 34. The speed reduction mechanism 34 has a fixed shaft 841 located at the center of rotation of the fans 31 and 32, and a fixed gear 342 at the rotating portion of the fixed shaft 341 for the axial fan. A rotary body 321 of a centrifugal fan is attached to the fixed shaft 341 so as to be freely rotatable.
A ring gear 343 that meshes with the rotating body 31 is provided, and a planetary shaft 344 is provided protruding from the front surface of the rotating body 321.
A planetary gear 345 that meshes with the fixed gear 342 is loosely inserted into the rotating body 311 of the axial flow fan described above.
5 and an internal gear 346 that meshes with the internal gear 346.

Next, the operation of the above embodiment will be explained.

When the drive motor (drive source) 33 is operated, the drive teeth *3
42 and ring gear 343 to rotate the rotary body 321 of the centrifugal fan 32, and along with this, the centrifugal blades 322
It also rotates. As the planetary shaft 344 rotates due to the rotation of the rotating body 32, the planetary gear 345 loosely inserted into the planetary shaft 344 rotates while revolving around the fixed gear 342.
The internal gear 346 meshed with the planetary gear 345 is also the planetary gear 3
The snow face 313 and the axial flow blade 312 are rotated by the rotation of the rotary body 311 equipped with the internal gear 346.

Therefore, when the snow blower of the above embodiment is pushed forward while being driven at the m-thick point, the snow is taken into the casing part 2 through the snow intake port 21, sent to the back side by the axial flow vane 312, and collides with the rotating body 321. The snowfall is pushed to the front side of the axial flow blade 312 by the lightning face 313, and this is also sent to the back side of the axial flow blade 312. Axial flow vane 312
The snow that has reached the back side of the
3 and is ejected from the aircraft through the chute 24.At this time, the axial flow blades 312 have low speed and high torque, and the centrifugal blades 322 have high speed and low torque. However, the axial flow blades 312 can effectively take in snow, and the centrifugal blades 322 can effectively blow away accumulated snow with their high speed rotation.

Second Embodiment> FIGS. 7 to 8 show a second embodiment of the present invention. The second embodiment is basically the same as the first embodiment, but with a reduction mechanism. It has been changed.

Further, the second embodiment is provided with stays 35 arranged radially between an axial fan 31 and a centrifugal fan 32 around a rotating shaft located at the center of rotation of both.

The speed reduction mechanism 36 utilizes this stay 35, and the rotating body 321 of the centrifugal fan 32 has a rotating shaft 361 as a central axis.
The rotating shaft 361 is directly connected to the drive motor 3.
A central gear 362 is provided protrudingly at a position corresponding to the axial flow fan 31, and the central gear 362 is attached to a planetary shaft 363 fixed to the stay 35.
A planetary gear 364 that meshes with the planetary gear 364 is loosely inserted into the rotating body 311 of the axial fan, and an internal gear 3 that meshes with the planetary gear 364 is inserted loosely into the rotating body 311 of the axial fan.
65.

When the drive motor 33 is activated, the rotating shaft 361 rotates, and the centrifugal fan 32 is also rotated. Accordingly, the rotating body having the internal gear 365, that is, the axial fan 33, is decelerated and rotates in the opposite direction to the centrifugal fan 32.

Therefore, in the second embodiment, the snow removal function is performed in the same way as in the first embodiment, and the centrifugal fan 32 and the axial fan 31 rotate in opposite directions. The reaction forces cancel each other out, resulting in excellent operability.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and the present invention can be applied to any one in which an axial fan and a centrifugal fan are provided on the same axis, and a speed reduction mechanism is provided to make the rotational speeds of the fans different. Any speed reduction mechanism may be used, and the form of the fan itself may be arbitrary.

(Effect of the invention) Using an axial fan in the snow intake part like the beam of the present invention,
In addition to using a centrifugal fan in the snow discharge section, power is distributed to both on the same axis and the rotational speeds between the two are different, making it easier to downsize compared to the previous one that used an auger. It can also be used to remove snow from roofs, etc., and can efficiently capture and release accumulated snow.

[Brief explanation of drawings]

The drawings show embodiments of the present invention; FIG. 1 is a partially cutaway side view of the first embodiment, FIG. The figure shows the operation of the planetary gear section. Fig. 5 is a front view of the axial fan section, Fig. 6 is a front view of the centrifugal fan section, Fig. 7 is a partially cut side view of the second embodiment, Fig. 8 is a diagram of the same mechanism, and Fig. 9 FIG. 2 is a diagram showing the operation of the planetary gear portion. 1, the fuselage 11, the base 12, the handle 2, the casing part 21, the lightning intake port 22, the peripheral wall 23, the discharge port 24, the chute 3, the drive unit 31, the low-speed axial flow fan 311, the rotating fuselage 312, the axial flow Blade 313 is a snow face 32 is a high-speed centrifugal fan 321 is a rotating body 322 is a centrifugal blade 33 is a drive source (drive motor) 331 is a drive gear 34 is a reduction mechanism 341 is a fixed shaft 342 is a fixed gear 343 is a ring gear 344 is a planetary shaft 345 is a planetary gear 346 is an internal gear 35+Yostee 36 is a reduction mechanism (second embodiment) 361 is a rotating shaft 362 is a center gear 363 is a planetary shaft 364 is a planetary gear 365 is an internal gear

Claims (1)

[Claims] (1) A casing provided with a snow intake port on the front surface and a snow discharge port provided on the peripheral wall of the back surface, and arranged in the front and rear inside the casing,
A snow blower comprising a low-speed axial fan and a high-speed centrifugal fan that are arranged on the same axis with a speed reduction mechanism interposed therebetween.