JPH01210511A - Snow remover - Google Patents

Abstract

PURPOSE:To improve the performance of snow removal by arranging a rake-in shaft with a rake-in blade and a blower shaft with a blower blade in approximately parallel. CONSTITUTION:A rake-in shaft 12 with rake-in blades 18 for raking in snow is disposed in front of the inside of a snow removing section case 1 for a snow remover, and a blower shaft 13 with blower blades 15 for throwing out snow raked in in parallel with the rake-in shaft 12 is arranged on the lower side of an opening 3 in the rear of the rake-in shaft 12. Snow raked in by the rake-in blades 18 is all forwarded to the rear as it is extending over overall width of the rake-in blades 18. Accordingly, the efficiency of snow removal can be improved.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention includes a raking shaft having raking blades for raking snow, and a blower shaft having blower blades for throwing out the raked snow. Regarding snow blowers.

(Prior art) In the conventional snow blower of this type,
2933), a scraping shaft 32 having a scraping auger 31, and a blower shaft 34 having a blower blade 33.
The blower blades 33 are arranged at right angles to the auger 31.
The rear surface of the auger shaft is surrounded by a case 35 to prevent the snow from being shoveled in from the front by the auger 31 toward the rear (blower side). It is constructed as a wall.

According to this structure, the auger 31 has to play the role of shoveling snow from the front into the case and collecting the shoveled snow in the center and sending it to the blower blades 33. During collection, a considerable amount of snow collides with the rear case 35 due to centrifugal force and rebounds forward again, so the snow scraped by the auger 31 overflows forward again, as shown by A in Figure 7, and the snow is removed accordingly. Efficiency decreases.

On the other hand, the snow that overflows in front acts as resistance to the forward movement of the snow blower. In addition, since the auger 31 simultaneously performs two functions: raking and gathering to the center, its shape and rotation speed are limited.
There are significant restrictions in trying to improve snow removal performance.

(Objective of the Invention) The object of the present invention is to improve the snow removal efficiency by ensuring that all the snow shoveled by the auger is sent to the blower without bouncing back forward again, and by preventing the snow from bouncing back, the snow blower can move forward. In addition, by not requiring the auger to collect snow in the center, the shape and rotation speed can be freely designed to improve raking efficiency. The goal is to improve performance.

(Technical Means for Achieving the Object) In order to achieve the above object, the present invention has a raking shaft having raking blades for raking snow, and a blower blade for throwing out the raked snow. In a snow blower equipped with a blower shaft, the raking shaft is placed on the snow intake side of the snow blower,
The blower shaft is arranged substantially parallel to the above-mentioned scraping shaft.

(Function) The snow shoveled from the snow intake by the scooping blades is sent directly to the rear blower blades without being collected in the center, and is thrown out from the shooter by the blower blades.

By arranging both shafts in parallel, the axial width of the blower blade can be easily matched to the axial width of the raking blade, and almost all of the snow shoveled by the raking blade remains intact. It is sent to the rear, thrown out by the blower blades, and does not overflow to the front.

(First Embodiment) FIG. 2 shows a vertical side view (cross-sectional view taken along the line ■-■ in FIG. 1) of a snow blower to which the present invention is applied, and in this FIG.
The snow removal unit case 1 has a snow intake port 2 opened at the front surface, a snow discharge port 3 opened at the upper surface of the rear part, and a shooter 5 extending forward and upwardly formed in the snow discharge port 3. Shooter 5
A guide cover 6 whose elevation angle can be changed and adjusted is fixed to the upper end of the guide cover 6.

An engine 8 is mounted on the rear side of the snow removal unit case 1, and is also provided with wheels 9, an operating handle 10, and the like.

A raking shaft 12 that is horizontal and extends in the left-right direction is arranged in the front part of the snow removal unit case 1, and a floor shaft parallel to the raking shaft 12 is arranged behind the raking shaft 12 and below the opening 3. 1
3 is placed. A plurality of blower blades 15 are fixed to the blower shaft 13 and extend radially outward. A plurality of scraping blades 18 are provided on the scraping shaft 12. A plurality of the scraping blades 18 are fixed to an annular support member 20 at intervals in the circumferential direction, and the support member 20 is fixed to the scraping shaft 12 via a stay 21. The raking blades 18 are purchased to perform only the function of raking up snow from the front and sending it directly to the rear.

In FIG. 1 showing a horizontal sectional view (I-1 sectional view in FIG. 2), the center part of the scraping shaft 12 is connected to the front reduction gear case 22.
It is rotatably supported by the case 1, and both ends are rotatably supported by the side walls of the case 1. The center portion of the floor shaft 13 is rotatably supported by the rear reduction gear case 23, and both end portions are rotatably supported by the side walls of the case 1. Both reduction gear cases 22 and 23 are cylinders 2 containing transmission shafts.
4 to the rear engine 8.

A transmission shaft (not shown) in the transmission tube 24 is interlocked and connected to the scraping shaft 12 and the blower shaft 13 via a mechanism in each reduction gear case 22, 23, and its rear end is interlocked with the output shaft of the engine 8. It is connected.

The blower shaft 13 is formed to have approximately the same length as the scraping shaft 12, and the axial width L2 of the blower blade 15 is equal to the scraping 5A18.
It is formed to have substantially the same width as the axial width L1 of.

Next, snow removal work will be explained. Engine 8 in Figure 2
As a result of the rotation, both shafts 12 and 13 rotate in the direction of arrow R, and the wheels 9 rotate and move slowly forward.

The snow in front is scraped into the case 1 by the rotation of the scraping blade 18, and remains as it is over the entire width L1 of the scraping TA18.
That is, it is sent rearward without being transferred in the left-right direction. The snow sent to the rear is thrown out from the snow throwing opening 3 by the rotation of the floor blades 15, guided by the shooter 5, and thrown forward and upward.

(Second Embodiment) The embodiment shown in FIG. 3 is an example in which the scraping blade 18 is a spiral blade, a so-called auger. However, since the auger 18 does not require an axial conveying function, for example, the axial pitch of the auger 18 can be narrowed compared to the conventional example shown in Fig. 5 to increase the raking efficiency, and the rotation speed can be increased faster than before. setting, the raking efficiency can be further improved.

The rest of the structure is the same as in FIG. 1, and the same parts are given the same numbers.

(Third Embodiment) The example shown in FIG. 4 is an example in which a large number of scraping claws extending generally outward in the radial direction are formed as the scraping blades 18. The scraping pawl 18 has an outer end bent, for example, in the axial direction, and has a shape that throws the scraped snow toward the blower.

(Other embodiments) (1) The embodiment shown in FIG.
Although this is a central support structure in which the reduction gear cases 22 and 23 support the reduction gear cases 22 and 23 at their central portions, it is also possible to have a structure in which, for example, the reduction gear cases are shifted to one side in the axial direction and supported only on both sides.

(2)m In Figure 1, the scraping blade 18, which has a structure like a water wheel or a sirocco fan, is arranged parallel to the scraping shaft, but one end of the scraping blade 18 in the length direction is placed on the forward side in the rotation direction. It can also be tilted so that it comes to

(3) The present invention can also be applied to a hand-push type snow blower that is not equipped with a self-propelled traveling device such as wheels.

(Effects of the Invention) As explained above, the left side according to the present invention: (1) The snow shoveled by the scooping blade is spread over the entire width of the scooping blade.
Since it is possible to send all of the snow to the rear as it is, and there is no need to collect the snow in the center, the snow will not overflow to the front, improving snow removal efficiency and reducing resistance to the forward movement of the snow blower.

In particular, if the width of the scraping shaft and the width of the blower shaft are made substantially the same, the above-mentioned effect will be further improved.

(2) Since the floor axis and the rake axis are provided in parallel,
The raking blades only need to have the function of raking the snow and sending it out rearward as it is, and there is no need for the raking blade to have the function of collecting the snow in the central part in the axial direction.

Therefore, the scraping blade can be formed into a shape suitable only for the scraping function, and the scraping efficiency is improved.

[Brief explanation of the drawing]

Fig. 1 is a horizontal sectional view (I-I sectional view in Fig. 2) of a first embodiment of a snow blower to which the present invention is applied, and Fig. 2 is a -
■Cross-sectional view, Fig. 3 is a horizontal sectional view of the second embodiment, Fig. 4 is a partial front view showing a modification of the scraping blade, Fig. 5 is a horizontal sectional view of the conventional example, Figs. The figure is a perspective view of a conventional example. 2...Snow intake port, 12...Rake shaft, 13...
・Blower shaft, 15... Blower blade, 18... Scraping blade 75 /J /ri Figure 5 Figure 6 Completion flash

Claims (1)

[Claims] In a snow blower equipped with a raking shaft having raking blades for shoveling snow and a blower shaft having blower blades for throwing out the shoveled snow, the raking shaft is placed on the snow intake side of the snow blower. and a blower shaft is arranged substantially parallel to the raking shaft.