JPH0535155Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) The invention is based on a device that rotates around a horizontal axis in the lateral direction at the front of a traveling device that is driven by an installed engine. A snow removal blade is used to shovel snow in front of the snow removal blade, and a vane behind the snow removal blade that rotates around a rotational axis in the front and back direction sucks up the snow shoveled by the snow removal blade and sends air into the discharge tube. This relates to a snow remover equipped with a centrifugal blower for discharging the snow upwardly through the snow blower.

(Prior Art and Problems to be Solved) Conventionally, in this type of snow blower, the air passage provided in the tangential direction tangent to the outer circumference of the blower was provided in a cylindrical shape as shown in Fig. The outer edge of the surface was formed into a square rectilinear shape.
In this type of snow blower, the blocks of snow that are sent in the circumferential direction while being pressed against the inner surface of the outer circumferential wall of the blower by centrifugal force by the vanes are sent along the wall to the centrifugal outside of the air duct by centrifugal force. Although it is blown away by
Since the distal outer wall of this air passage is cylindrical,
This block deforms and causes resistance, and also causes turbulence, resulting in decreased discharge performance or snow clogging. For this reason, as shown in Figures 6 and 7, the shape of the air passage is a rectangular tube, and the wall on the distal side of the air passage is a flat surface. Some attempts have been made to solve the above drawbacks by providing almost the same air passages, but the cross-sectional shape of the air duct is rectangular, the wall on the outer side of the distal end is particularly long, and the load of the discharged snow is applied. Therefore, deformation easily occurs, and the need to increase the thickness of the plate increases the weight.

[Structure of the idea]

(Means and effects for solving the problem) The present invention is such that at least the wall on the distal outer side of the air duct is curved toward the outer circumferential direction, and the shape of the outer edge of the surface of the vane and the outer edge of the air duct on the distal side In the blower in which both the cross-sectional shape of the wall and the cross-sectional shape of the outer circumferential wall of the blower are square, the outer wall of the air passage is curved, so that the strength will not be significantly deformed.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

In FIGS. 1 to 5, the snow blower 1 is constructed as follows. That is, an engine (not shown) is mounted on the upper part of the traveling device 5 provided with the cover belt 3, and is covered with a cover 7. At the front of the traveling device 5, there is a snow removal device 9 driven by the same engine.
is installed. An operating device 11 for operating the traveling device 5 and the snow removal device 9 is provided on the rear end surface of the cover 7 at a rear position of the traveling device 5.

The snow removal device 9 is constructed as follows. That is, screw-shaped snow removal blades 13, which are rotated by the drive of an engine about a horizontal axis 12 in the lateral direction, are provided with opposite left and right twisting directions, and scoop snow and send it inward from the sides to remove snow. A blower 15 equipped with a blade plate 16 that rotates around a rotation axis 14 in the longitudinal direction behind the blade 13 sucks the snow shoveled by the snow removal blade 13 and blows air.
The liquid is discharged upward through a discharge pipe 17 having a U-shaped cross section. A guide plate 19 for adjusting the discharge direction up and down is pivotally attached to the upper end of the discharge tube 17 so as to be vertically swingable, and a lower part of the discharge tube 17 is provided so as to be freely rotatable in the horizontal direction. There is. The operating device 11 is configured as follows. That is, on the operation panel 21 on the rear surface of the cover 7, there is an operation lever (discharge tube lever) 23 that rotates the discharge tube 17 in the horizontal direction via the wire 18 and swings the guide plate 19 in the vertical direction. and snow removal blade 1
3, a snow removal clutch lever 25 for power connection/disconnection, a speed change lever 27 for engine power, and a traveling device 11.
A running clutch lever 29 for power connection/disconnection of the left and right covers 3, and side levers 31, 33 for power connection/disconnection of the left and right covers 3.
and a throttle lever 35 for adjusting the engine, a fuel lamp 37 for displaying the remaining amount of fuel in the fuel tank, a lubricating oil lamp 39 for displaying the remaining amount of lubricating oil in the tank, and power safety devices such as shear pins. A power lamp 41 is provided to indicate the operation of the motor. One end of a flexible outer tube 47 of the wire 43 is locked to the edge of the guide plate 19 by a bracket 45 provided on the discharge tube 17, which is interlocked with the operating lever 23 via a wire 43. The guide plate 19 is always urged upward by a bullet (not shown).

The blower 15 has a side plate 4 fixed to the rotating shaft 14.
A vane plate 16 is fixed radially near the outer periphery of one end face of the blade 9 and is reinforced by a rib 51 in the circumferential direction. The blade plate 16 is housed in a circular blade chamber 53 that opens at the front, and an air passage 55 is provided inside a substantially rectangular cylindrical portion 54 that is in contact with the inner diameter circle of the blade chamber 53. A disk 59 having a cylinder 57 fixed to its upper surface is fixed near the cylinder 56, and an outer cylinder 60, which rotatably fits around the outer periphery of the cylinder 57 and fixes the discharge tube 17 to the outer periphery, is attached to the upper end of the cylinder 57. It is locked in the axial direction by a locking ring 62 that is fixed. The shape of the outer edge of the surface of the vane plate 16 of the blower 15 and the cross-sectional shape of the outer circumferential wall 63 of the blower 15 are both formed into substantially the same rectangular shape, and the wall 61 on the centrifugal outer side of the air passage 55 has a portion in contact with the outer circumferential wall 63. The cross section changes from a straight line to a curved shape as you go upwards, and the other three walls are flat.

In the above embodiment, when the snow removal blade 13 moves forward by the traveling device 5 driven by the engine, the snow shoveled by the rotating snow removal blade 13 is removed from the discharge pipe 17 by the blower 15. It is something that is discharged. To change the ejection direction of the ejection tube 17, when the ejection tube lever 23 is operated in the front-back direction, the wire 43 is moved together with the operation shaft 57, and the guide plate 19 swings in the vertical direction. Further, when the operation lever (ejection tube lever) 23 is operated in the left-right direction, the wire 18 is moved and the discharge tube 17 is rotated in the left-right direction. Blade 16 of blower 15
The snow blown away by the blower is discharged into the air passage 55 along with the air, but due to the centrifugal force, the inner surface of the square outer peripheral wall 63, which has almost the same shape as the outer edge of the surface of the blade 16 of the blower 15, The block of snow that is sent in the circumferential direction while being pressed against the wing plate 1
The air is smoothly transferred along the distal outer wall 61 of the air passage 55, which is curved outward from the outer edge of the 6th surface.

[Effect of idea]

According to the present invention, the cross-sectional shape of the wall on the distal outer side of the air duct can be made almost square, and the strength can be increased. The curved surface outwards from the shape of the outer edge of the plate surface allows snow to be smoothly transferred from the blower to the air duct, and also prevents the distal outer wall of the air duct from deforming, simplifying the structure and increasing the air blowing capacity. It is something that can be improved.

Note that FIGS. 6 and 7 show conventional examples.
The wall 61 and the outer circumferential wall 63 have a rectangular cross-sectional shape that is substantially the same as the outer edge shape of the vane 16, and the wall 61 is flat. FIG. 8 shows another conventional example in which the cross-sectional shape of the wall 61 is an arc, and the outer peripheral wall 6
3 and the outer peripheral edges of the vane plate 16 are square.

[Brief explanation of the drawing]

Figure 1 is a side view of one embodiment of the present invention, Figure 2 is a front view of the operation panel, Figure 3 is a front sectional view of the blower,
Fig. 4 is an enlarged plan sectional view of the main parts, Fig. 5 is a plan sectional view taken along the - line in Fig. 3, Fig. 6 is a front sectional view of the conventional blower, and Fig. 7 is an enlarged plan view of the main parts. The sectional view, FIG. 8, is an enlarged plan sectional view of the main part of another conventional example. 5... Traveling device, 12... Horizontal axis, 13... Snow removal blade, 14... Rotating shaft, 15... Blower, 16
... Vane plate, 17 ... Discharge tube, 55 ... Air duct, 6
1...Wall.

Claims (1)

[Scope of utility model registration request] A snow removal blade 1 is provided at the front of a traveling device 5 that is driven by a mounted engine and rotates around a horizontal horizontal axis 12 to scrape snow in front.
3, a vane plate 16 that rotates around a longitudinal axis of rotation 14 behind the snow removal blade 13 sucks the snow shoveled by the snow removal blade 13 and sends it along with air through a discharge tube 17. In a snow removal machine equipped with a centrifugal blower 15 for discharging air in an upward direction, the shape of the outer edge of the surface of the vane plate 16 and the cross-sectional shape of the outer circumferential wall 63 of the blower 15 are formed into a square shape, and the blower The cross-sectional shape of the air blowing passage 55 that is in contact with the outer circumferential circle of No. 15 is formed into a substantially rectangular shape, and at least the distal outer wall of the air blowing passage 55 is curved outward of the rectangle in the outer circumferential direction. snowblower.