JPS6327607A - Blower of snow removing machine - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a blower for a snow blower, and more specifically, to a blower that can cope with damage caused by foreign objects such as stones caught during snow throwing. Regarding the snow blower blower.

(Prior Art) There is a so-called two-stage type snow blower, which is configured as follows. That is, an auger is provided that crushes the planted snow, and a blower is provided that sends the snow crushed by the auger to the snow throwing chute along with air.

The snow fed into the snow throwing chute is guided by the snow throwing chute and discharged in a desired direction.

In the above case, the blower has a cylindrical box-shaped casing, and one axial end thereof is open toward the auger.

A rotary vane is provided inside the casing, which rotates approximately coaxially with the casing and sends the snow from the auger together with air into the snow throwing chute.

(Problem to be Solved by the Invention) By the way, in order to make the blower smaller and increase its discharge pressure and air quality, that is, to improve the performance of the blower, it is necessary to It is preferable to make the gap between the outer surface and the outer surface as small as possible.
However, during snow removal work, foreign objects such as stones are fed into the blower together with snow, so if the gap is small, the foreign objects will get caught in this gap. The smaller this gap is, the greater the impact will be when a foreign object is caught, causing a disadvantage that the casing and rotating blades will be significantly damaged.

(Purpose of the Invention) This invention was made in view of the above-mentioned circumstances, and it suppresses foreign matter from getting caught in the blower while maintaining good performance of the blower, thereby improving the casing and rotation of the blower. The purpose is to prevent damage to the blades.

(Structure of the Invention) The features of the present invention for achieving the above object are that the rotating blade is attached to a rigid blade base body, and is attached to the outer peripheral end of the blade base body and protrudes radially outward from the outer peripheral end. The point is that it is made up of an elastic plate.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

: In Figure 52 and Figure 3, l is the g remover and arrow F in Figure 1
r indicates the front of this snow removal fit. Reference numeral 2 denotes a vehicle body frame, and this vehicle body frame 2 is supported by a traveling section 3, and this traveling section 3 is used as a traveling section on a snow removal work surface. In addition, a snow blower main body 4 is provided at the front of the vehicle body frame 2.
The engine 5 supported by the vehicle body frame 2 drives the traveling section 3 and the snow blower main body 4. A pair of left and right handles 6 are provided at the rear end of the vehicle body frame 2.
．． 6 is provided in a protruding manner, and snow removal work using this snow removal fit is performed by the operator grasping this handle 6.6.

The running section 3 includes a drive wheel 8 driven by an engine 5, a driven wheel 9 located behind the drive wheel 8, and these wheels 8.
．． It has a crawler lO that can be hung on a 9. When the drive wheels 8 are driven by the engine 5, the crawler 10 rolls on the work surface, and thereby the traveling section 3 travels on the work surface.

The snow remover main body 4 is a two-stage type having a snow collecting mechanism and a snow throwing mechanism, each of which is configured as follows.

That is, in the snow collecting mechanism, a snow-crushing auger 11 that rotates around an axis extending in the vehicle width direction is provided at the front end of the vehicle body frame 2.
I support this. On the other hand, a drive shaft 12 is provided that extends forward from within the vehicle body frame 2.
The rear end of the vehicle is driven by the engine 5 via a reduction gear (not shown).

The auger 11 is interlocked with the front end of the drive shaft 12, and the auger 11 is driven to crush accumulated snow. Further, a snow collecting cover 13 is provided to cover the rear of the auger 11, and this snow collecting cover 13 collects the snow crushed by the auger 11 to the center in the vehicle width direction as the traveling fFI 13 moves forward.

On the other hand, in the snow throwing mechanism, snow is crushed by the auger 11,
A snow-throwing chute 14 throws the snow collected by the snow-collecting cover 13.
A blower 15 is provided to send air together with the air.

The snow-throwing chute 14 guides the snow in a predetermined direction and releases it.

The blower 15 will be explained with reference to FIGS. 1 to 4. The blower 15 has a cylindrical box-shaped casing 16 whose axis extends in the front-rear direction. This casing 16 is connected to the rear surface of the center portion of the snow collecting cover 13 in the vehicle width direction, and the front end of this casing 16 opens toward the auger 11 inside the snow collecting cover 13. Further, a discharge pipe 17 having a circular cross section is provided on the outer peripheral surface of the casing 16.
The inside of this discharge W17 serves as a discharge port 18. This discharge pipe 17 extends upward in the tangential direction of the casing 16 and is provided on the left side of the casing 16. The snow-throwing chute 14 is supported on the discharge pipe 17, and the lower part of the snow-throwing chute 14 communicates with the discharge port 18.

A rotary blade 19 is provided within the casing 16 coaxially with the casing 16 . The rotary blade 19 has a rigid blade body 2o made of metal.
A boss portion 21 fitted onto the drive shaft 12, a rotary plate 22 supported by the boss portion 21, and three blades 23 extending over and protruding from the boss portion 21 and the rotary plate 22.
The blades 23 are arranged at equal intervals in the circumferential direction.

When the auger 11 is driven by the drive shaft 12, the rotary blades 19 rotate along with the drive shaft 12. At this time, the rotating blade 19 rotates counterclockwise when viewed from the front, and sends the snow collected by the snow collecting cover 13 together with air through the discharge port 18 to the snow throwing chute 14.

In the above configuration, the inner peripheral surface of the casing 16 and the blade 23
An elastic plate 24 made of rubber or the like is provided to close a part of the gap between the radially outer end and the radially outer end. This elastic plate 24 is attached to the blade 23 with a presser plate 25 and rivets 26. The dimension of the gap is narrowed by this elastic plate 24. In this case, the outer end of the blade 23 in the radial direction is connected to the rotating plate 2.
The elastic plate 2 is located radially inward from the outer peripheral surface of the elastic plate 2.
The radially outer end of 4 is flush with the outer peripheral surface of the rotating plate 22.

If a foreign object such as a stone does not enter the blower 15 during snow removal work, the gap between the inner peripheral surface of the casing 16 and the outer peripheral end of the rotary blade 19 is closed by the outer plate 24, and therefore the blower At step 15, the predetermined performance is obtained and snow removal work is performed.

In addition, as shown by the two-dot chain line in FIG. 4, when a foreign object F such as a stone along with snow tries to get caught between the inner circumferential surface of the casing 16 and the blade body 20 during snow removal work, 2
4 is elastically deformed to allow the foreign matter F to pass through the gap between the inner peripheral surface of the casing 16 and the outer peripheral end of the blade base body 20, thereby preventing the foreign matter F from being caught.

In the above case, the outer plate 24 may close almost all of the gap, and in this case, the radially outer end of the elastic plate 24 will come into sliding contact with the inner circumferential surface of the casing 16.

The snow throwing chute 14 is supported on a discharge pipe 17 so as to be rotatable about a vertical axis. This snow-throwing shoe) 14 is connected to the handle 6 via a worm gear 28 and a universal joint shaft 29.
It is interlocked and connected to an operating lever 30 supported by. By rotating this operating lever 30 (arrow R in Figures 2 and 3), the snow-throwing chute 14 can be rotated in the desired direction (arrow T in Figure 2.3), and the snow-throwing The direction can be selected arbitrarily.

(Effect of the invention) According to this invention, a single rotation blade has a rigid blade body,
Since it is constructed with an elastic plate that is attached to the outer peripheral end of this blade root body and protrudes radially outward from this outer peripheral end, when foreign objects such as stones do not enter the blower during snow throwing work, the inner peripheral surface of the casing The gap between the blade and the outer circumferential end of the blade base body is closed by an elastic plate, so that the blower can achieve a predetermined performance and perform snow removal work. On the other hand, when foreign objects such as stones and snow try to get caught between the inner peripheral surface of the casing and the rotating blade during snow throwing, the elastic plate undergoes bony deformation.
This foreign material is allowed to pass through the gap between the inner circumferential surface of the casing and the outer circumferential end of the rotary blade, thereby preventing the foreign matter from being caught.

Therefore, it is possible to suppress foreign matter from getting caught in the blower and prevent damage to the casing and rotating blades of the blower while maintaining good performance of the blower.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a side view of the rotary blade, Fig. 2 is a partial sectional side view of the snow blower, Fig. 3 is a partial front sectional view of the snow blower, and Fig. 4 is a partial sectional view of the snow blower. is a partially enlarged explanatory diagram of the effect of FIG. 3; 1.Snow blower, 11-.Auger, 14.-Snow throwing chute, 15.-Blower, 16..Casing, 18.-Discharge port, 19.-Rotating blade, 20φ.-Blade body, 24.-Rii Sexual root.

Claims (1)

[Claims] 1. A cylindrical box-shaped casing with one axial end opening toward the snow-crushing auger is provided, a discharge port extending from the outer peripheral surface of the casing toward the snow-throwing chute is formed, and the above-mentioned casing and In a blower for a snow blower, a rotary blade that rotates approximately coaxially and sends snow from an auger together with air to a snow throwing chute through a discharge port is installed in this casing. 1. A blower for a snow remover, comprising: an elastic plate attached to an outer peripheral end of the snow remover and projecting radially outward from the outer peripheral end.