JPH08302636A - Walking type snow removing machine - Google Patents

Abstract

PURPOSE: To provide a walking type snow removing machine fitted with crawler which can simply perform snow removal in a narrow place by a single unit itself, for example in a private road or garden, by furnishing an auger type snow removing part and a scratching blade capable of elevating and sinking at the front of the snow removing machine, and removing thick deposited snow by the auger and also the residual snow by the blade. CONSTITUTION: An auger type snow removing part 10 is installed in the front part of the body 3 of a crawler-equipped walking type snow removing machine 1 on which an engine 4 fitted with a transmission is load, and a scratching blade 21 elevating and sinking with a motor-driven actuator is furnished at an auger housing 12. A handle 7 and an operation part 50 are mounted on a handle post 6 a ranged upright at the tail of the body 3. A handle 7 is manipulated in the condition that the blade 21 is lifted, and the machine 1 is allowed to run for itself. The output of the engine 4 is transmitted to the snow removing part 10, and thick deposited snow is scratched by the auger 11, and the scratched snow is discharged by a blower 15 to the outside via a chuter 17, Then the blade 21 is set at an appropriate level, and the residual snow is thoroughly removed by the blade 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a walk-behind snow remover (a type in which a vehicle is self-propelled but a driver walks).

[0002]

2. Description of the Related Art Conventionally, snow removal work on national roads and public roads is extensive, so that it is carried out on a large scale with a large-sized passenger snow plow. Such large-scale snow removal work will be described with reference to FIG. FIG. 7 is an explanatory view of conventional snow removal work,
In order to remove snow on a wide road surface 101 such as a national road or a public road, generally, deeply accumulated snow 102 is scratched by a passenger snow removal vehicle 103 (rough work), and the remaining snow 102a is removed by a subsequent passenger bulldozer 108 (finishing work).

The passenger snow plow 103 has an auger type snow pruner 104.
And a blower 106 for discharging the snow scratched by the auger 105 to the outside, the auger 105 being arranged on the front side in the traveling direction (left side in this figure) for snow scraping. . 107 is a shooter that discharges snow outward. Road surface 101 with only auger type snow removal unit 104
Since the above snow cannot be scraped off sufficiently, the subsequent riding bulldozer 108 removes the remaining snow 102a from the blade (earthwork plate) 10.
Scratch thoroughly with 9.

As described above, the auger-type snow removing unit 104 and the blade 109 are used to remove snow over a wide area and on a large scale.
Since using alternately and is very inefficient,
In many cases, a passenger snowplow 103 with an auger type snow removing unit 104 suitable for scratching deeply accumulated snow 102 and a passenger bulldozer 108 suitable for scratching relatively shallowly accumulated snow are used as a pair.

On the other hand, in order to scrape deeply accumulated snow in a narrow place such as a private road or a garden, there is, for example, Japanese Patent Laid-Open No. 63-512, "Snowblower," which is shown in FIG. So that the crawler 4 self-propelled by the driving force of the engine 13
This is a walk-type snow remover that drives an auger 79 and a blower 75 attached to the front part of a vehicle body with the 3 attached thereto by the engine 13 to discharge the snow scratched by the auger 79 from a discharge duct (shooter) 78 to the outside.

[0006]

In the above conventional walk-type snow remover, it is not easy to scrape snow sufficiently with the auger 79 alone, as in the case of a passenger snow remover equipped with an auger type snow remover. Therefore, it is necessary to manually remove the remaining snow, which imposes a heavy burden on the operator. It is also possible to use a walk-behind snow remover to scrape deeply accumulated snow, and use a walk-behind bulldozer to remove the remaining snow, but two snow removers are used alternately for small-scale snow removal work in a narrow space. If it is driven to the lower level, the workability will be poor.

[0007] Therefore, an object of the present invention is to provide a walk-type snow removal that can easily scrape off the snow on the road surface and a worker's burden is small, even when performing a small-scale snow removal work in a narrow place such as a private road or a garden. To provide a machine.

[0008]

In order to achieve the above object, the present invention provides a vehicle body which is self-propelled by a driving force of an engine, an auger type snow removing section attached to a front portion of the vehicle body, and an auger type snow removing section. Of the snow shoveling blade arranged in the front part of the auger housing so as to be able to move up and down, and an actuator attached to the auger housing for moving up and down the snow shoveling blade.

Further, it is preferable that the actuator is an electric actuator.

Further, it is preferable that the blade is attached to the auger housing via a link mechanism.

[0011]

[Function] The auger type snow removing section scratches snow deeply accumulated in a narrow space such as a driveway or a garden, and subsequently, the remaining snow is removed by a snow scraping blade lowered by an actuator. When the snow scraping blade is used or not used, the blade may be appropriately moved up and down by an actuator. Also, by mounting the actuator on the auger housing, the empty space of the walk type snow blower can be effectively utilized.

Furthermore, the snow scraping blade is set to an optimum height by an electric actuator while removing snow according to the condition of the remaining snow and the condition of the road surface.

Furthermore, since the blade is attached to the auger housing via the link mechanism, even if snow or ice is attached to the mechanism, compared to the chain mechanism and the gear mechanism,
Operates more smoothly.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, "front", "rear", "left", "right",
“Upper” and “lower” follow the direction viewed from the driver, Fr indicates the front side, Rr indicates the rear side, L indicates the left side, and R indicates the right side. Further, the drawings are to be viewed in the direction of reference numerals. FIG. 1 is a side view of a walk-behind snow remover according to the present invention. The walk-behind snow remover 1 includes a vehicle body 3 with a crawler 2, an engine 4 with a transmission mounted on the vehicle body 3, and a front portion of the vehicle body 3 (this view). The auger type snow removing part 10 mounted on the left side), the snow scraping blade (earthwork plate) 21 arranged at the front part of the auger type snow removing part 10 and attached to the auger housing 12 so as to be vertically movable, and the snow scraping blade 21. It is an engine-driven self-propelled snow remover equipped with an electric actuator (described in FIG. 2) attached to an auger housing 12 for moving up and down. A handle post 6 is erected on the rear end side of the vehicle body 3, and the handle post 6 is provided with a handle 7 and an operating portion 50.

The auger type snow removing section 10 is composed of an auger 11 arranged at the forefront for scraping snow and a blower 15 for discharging the snow scratched by the auger 11 to the outside, and is driven by the engine 4. . The auger 11 includes an auger housing 12 whose front and rear sides and a lower side are open, and an auger blade 13 housed in the auger housing 12 (see FIG. 3).
Consists of The blower 15 includes a blower housing 16 whose front side is open, rotary blades (not shown) housed in the blower housing 16, and a shooter 1 which is eccentrically attached to the upper side of the blower housing 16 and discharges snow to the outside.
It consists of 7. The auger housing 12 is fixed to a blower housing 16, and the blower housing 16 is fixed to a case of the engine 4 with a transmission.

FIG. 2 is an assembly perspective view of the snow scraping blade and the link mechanism according to the present invention. The link mechanism 30 is a pair of left and right blade arms 31, 31 extending rearward from the left and right ends of the snow scraping blade 21. And the left and right swing plates 32, 32 to which the left and right blade arms 31, 31 are connected,
A pair of support members 33, 33 that support the left and right swing plates 32, 32 so that they can swing up and down (clockwise and counterclockwise in this figure), and the rear ends of the left and right swing plates 32, 32. Left and right intermediate rods 34, 34 connected to the front and rear oscillating parts (clockwise and counterclockwise in this figure), and upper and lower ends of the left and right intermediate rods 34, 34 with the oscillating tips vertically oscillating. Left and right intermediate levers 35, 35 and left and right intermediate levers 3
A rotary shaft 36 in which the swinging base ends of 5, 35 are connected to the left and right ends.
, Three bearings 37 that rotatably support the rotary shaft 36 on the auger housing 12, ... (... indicates a plurality, the same applies hereinafter), and a drive lever 38 having a swing base end coupled to the rotary shaft 36. An electric actuator (actuator) 40 having a piston rod 47 swingably connected to the drive lever 38, and a bracket 41 supporting a lower end portion of the electric actuator 40 so as to swing back and forth.

Side plates 22 are provided at the left and right ends of the snow scraping blade 21. Left and right support members 3
3, 33 are fixed to the rear surface of the auger housing 12 by welding, and the bracket 41 is fixed to the rear surface of the auger housing 12 and the right side surface of the blower housing 16 by welding. Incidentally, 49 is an electric wire connected to the electric actuator 40.

FIG. 3 is a plan view of the front part of the walk-behind snow blower according to the present invention, in which the auger housing 12 is wider than the blower housing 16, and therefore, there are empty spaces on the left and right sides behind the auger housing 12. S1 and S2 can be secured. Further, the snow scraping blade 21 extending to the left and right is a little wider than the auger housing 12, the blade arms 31 and 31 extend rearward along the auger housing 12, and the link mechanism 30 is provided at the rear portion of the auger housing 12. Mounted through. The electric actuator 40 is arranged in the empty space S2 on the right side. The rotary shaft 36 extends in the left-right direction of the auger housing 12.

FIG. 4 is a sectional view of an electric actuator according to the present invention. The electric actuator 40 is connected to a fork-shaped bracket 41 so that the gear box 4 can swing.
2 and a DC motor 43 attached to the gear box 42
A gear mechanism 44 housed in the gear box 42 and driven by the DC motor 43; a cylinder 45 standing upright from the gear box 42; a screw shaft 46 housed in the cylinder 45 and driven by the gear mechanism 44; And a piston rod 47 that is retractably housed in 45 and is engaged with a screw shaft 46. The electric actuator 40 includes a stroke detecting means 48. The stroke detecting means 48 includes an electrode 48a attached to the inner wall of the cylinder 45 and extending in the axial direction, and a brush 48b attached to the piston rod 47 and in sliding contact with the electrode 48a. It plays a role of detecting the stroke of the rod 47 and a role of detecting the stroke limit position.

FIG. 5 is a view taken along the line 5-5 of FIG. 1, and the lower side of this figure is the rear part of the walking snow remover. On the upper surface of the operation unit 50, a gear shift lever 51 for shifting gears of the transmission, a side clutch lever 52, an auger height adjusting lever 53 for adjusting the height of the auger, and an engine rotation adjusting lever for adjusting the engine speed. 54 and a snow throw adjustment switch 55 for adjusting the angle of the snow throw of the shooter. A blade adjustment switch 56 for adjusting the height of the snow scraping blade, a choke knob 57, and an ignition switch 58 for starting the engine are arranged on the back surface of the operation unit 50. Grips 7a, 7a are provided at the tips of the left and right handles 7, 7, a traveling clutch lever 61 is attached to the left handle 7, and an auger clutch lever 62 is attached to the right handle 7.

The snow throw adjustment switch 55 comprises a lever switch for tilting the automatic return type lever to the left and right. For example, when the lever is tilted to the right, the shooter 17 is operated.
Can be rotated clockwise, and when the lever is tilted to the left, the snow outlet can be rotated counterclockwise, and in the neutral state where the lever is released, the snow outlet can be stopped at that position. The blade adjustment switch 56 is a lever switch for tilting the automatic return lever up and down. For example, when the lever is tilted up, the blade 2 for snow scraping is operated.
1 can be moved up, and the lever can be tilted downward to lower the snow scraping blade 21, and the snow scraping blade 21 can be stopped at that position in a neutral state where the hand is released from the lever. The switch signal of the blade adjustment switch 56 is transmitted to the control means (not shown), and the control means controls the DC motor 43 of the electric actuator 40 based on the switch signal and the detection signal transmitted from the stroke detection means 48 (see FIG. 4). Will be in control.

Next, the operation of the snow scraping blade 21 and the link mechanism 30 having the above construction will be described with reference to FIGS. 1 and 2. In FIG. 2, the snow scraping blade 21 is at the lower limit position, and the piston rod 47 of the electric actuator 40 is in the most extended state. When the DC motor 43 is driven to retract the piston rod 47 in this state, the drive lever 38 rotates clockwise in this figure, and the rotation shaft 36 rotates in the same direction. Therefore, the left and right intermediate levers 35, 3
As 5 rotates clockwise, the intermediate rods 34, 34 descend and rotate the rocker plates 32, 32 clockwise. Therefore, the snow scraping blade 21 has a blade arm 31,
Lifted via 31. Then, in the electric actuator 40, when the piston rod 47 retracts to the stroke limit position, the stroke detection means 48 (see FIG. 4) transmits a detection signal to the control means (not shown), so that the DC motor 43 stops. That is, the snow scraping blade 21
Stops at the upper limit position shown by the imaginary line in FIG. When lowering the snow scraping blade 21, the reverse operation is performed.

Next, the operation of the walk-behind snow remover 1 having the above structure will be described with reference to FIG. 6 (a) and 6 (b) are explanatory views of the operation of the walk-behind snow remover according to the present invention. To scrape the ground, first, as shown in FIG.
The walking snowplow 1 is self-propelled with 1 being raised, and
The output of the engine 4 is transmitted to the auger type snow removing unit 10. That is, the auger 11 scratches the snow Y accumulated deeply, and the blower 15 discharges the snow scratched by the auger 11 to the outside through the shooter 17. Then, subsequently, as shown in (b), the snow scraping blade 21 is set to an arbitrary height, and the remaining snow Y
Sufficiently remove snow with a snow scraping blade 21.

As a snow removing method using the snow scraping blade 21, for example, the remaining snow Ya or a small amount of snow is scraped,
Place it in an unobtrusive place or throw it into a stream or gutter. Alternatively, the remaining snow Ya or a small amount of snow is scraped by the snow scraping blade 21, and the scraped snow is thrown to a place where it does not interfere with the auger type snow removing section 10, a stream or the like. In this way, by using the auger type snow removing unit 10 and the snow scraping blade 21 individually or in combination, one walk-type snow remover 1 can easily perform snow removing work in a narrow place such as a private road or a garden. it can.

In the above embodiment, the snow throw adjustment switch 55 and the blade adjustment switch 56 are independent switches, but a combination of these switches may be used. For example, the snow throw adjustment switch 55 may be four switches. As a directional lever switch, as a switch that plays a role of adjusting the angle of the snow throwing port of the shooter 17 when the lever is tilted left and right, and adjusting the height of the snow scraping blade 21 when the lever is tilted up and down. Good. Also, the blade adjustment switch 56 serves as a selection switch for selecting the "snow exit angle adjustment" function and the "blade height adjustment" function, and the snow exit adjustment switch 55 is selected by the selection switch. You may play the role of the adjustment switch which adjusts one.

[0026]

Since the present invention is configured as described above, it has the following effects. The walk-type snow remover according to claim 1 is an auger type snow removing unit attached to a front portion of a vehicle body, a snow scraping blade arranged at a front portion of the auger type snow removing unit and attached to an auger housing so as to be capable of moving up and down, and the snow removing blade. It consisted of an actuator attached to the auger housing to move the blade up and down, and a walk-type snow remover was equipped with an auger type snow remover and a snow scraping blade that was driven up and down by the actuator, so it was piled up deeply. Snow can be scratched with an auger type snow removing section, and the remaining snow can be subsequently removed with a snow scraping blade. Alternatively, the remaining snow or a small amount of snow can be scraped by a snow scraping blade, and the scraped snow can be discarded by an auger type snow removing section in a place where it does not interfere.
Therefore, by using the auger type snow removing part and the snow scraping blades individually or in combination, the snow removing work in a narrow place such as a private road or a garden can be easily performed by one walk type snow remover. In addition, when the snow scraping blade is used or not used, the operation can be performed simply by raising and lowering the blade appropriately with an actuator, and the troublesome attachment / detachment work of the blade in a cold place is unnecessary. Further, since the actuator is attached to the auger housing, the vacant space of the walk type snow remover can be effectively utilized, and the walk type snow remover can be downsized.

In the walk-type snow remover of the second aspect, since the actuator is an electric actuator, the blade for snow scraping can be easily set to an arbitrary intermediate height by appropriately stopping the electric actuator. For this reason, the blade can be quickly set to the optimum height while performing the snow removal work according to the condition of the remaining snow and the condition of the road surface, which facilitates the snow removal work.

The walk-behind snow remover according to claim 3 has blades,
Since it is attached to the auger housing via the link mechanism, even if snow or ice gets inside the mechanism, it can operate more smoothly than the chain mechanism or the gear mechanism.

[Brief description of drawings]

FIG. 1 is a side view of a walk-behind snow remover according to the present invention.

FIG. 2 is an assembled perspective view of a snow scraping blade and a link mechanism according to the present invention.

FIG. 3 is a plan view of the front part of the walk-behind snow remover according to the present invention.

FIG. 4 is a sectional view of an electric actuator according to the present invention.

5 is a view taken along the line 5-5 of FIG.

FIG. 6 is an operation explanatory view of the walk-behind snow remover according to the present invention.

FIG. 7 is an explanatory diagram of conventional snow removal work.

[Explanation of Codes] 1 ... Walk-type snow remover, 2 ... Crawler, 3 ... Car body, 4 ... Engine, 10 ... Auger type snow removing section, 11 ... Auger, 12 ... Auger housing, 15 ... Blower, 16 ... Blower housing, 21 ... Snow scraping blade, 30 ... Link mechanism, 40
... Actuator (electric actuator), S1, S2
… Empty space, Y… Deep snow, Ya… Remaining snow.

Claims (3)

[Claims] 1. A vehicle body which is self-propelled by a driving force of an engine, an auger type snow removing section attached to a front portion of the vehicle body, and a snow scraper which is arranged in a front portion of the auger type snow removing section and is vertically movable in an auger housing. Walking type snow remover comprising a blade for use in snow and an actuator attached to the auger housing for moving up and down the blade for snow scraping. 2. The walk-behind snowplow according to claim 1, wherein the actuator is an electric actuator. 3. The walk-behind snow blower according to claim 1, wherein the blade is attached to the auger housing via a link mechanism.