JP3666783B2 - snowblower - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a small snowplow that can be operated by one person by rotating a snow removal auger with a drive source.
[0002]
[Prior art]
Japanese Patent Laid-Open No. 62-63708 has been known as a snow remover of this type.
This snowplow has an auger paddle that is driven to rotate by a drive source in a housing. The auger paddle has a spiral auger on both sides and a paddle in the center, and the paddle has a substantially concave surface from the center to both sides. It is formed as if it were bent.
As clearly shown in FIG. 5, the auger paddle has a three-dimensional curved paddle including a snow throwing portion at the center, as shown in FIG. 5. May be difficult.
[0003]
[Problems to be solved by the invention]
In order to solve the above-described problems of the snow remover disclosed in the related art, the present applicant has previously proposed Japanese Patent No. 2556885.
In this snowplow, the snow throwing part in the central part of the auger paddle is formed with two slopes on both sides so that the central part is a valley. According to this, the structure of the auger paddle, in particular, the throwing part in the central part is formed. It is possible to simplify the structure of the snow part and to easily manufacture it, and to improve snow removal performance such as extending the snow throwing distance.
Although the above conventional snow remover collects snow in a so-called substantially V-shaped snow throwing part and performs snow throwing and discharging, there is still room for improvement in order to improve snow collecting performance and snow throwing performance. .
[0004]
The present invention has been made to solve the above problems, and provides a snow remover capable of further improving snow collecting performance and snow throwing performance while maintaining simplification of structure and ease of production. The purpose is to do.
[0005]
[Means for Solving the Problems]
Claim 1 to solve the above problems, is rotatably accommodated in the auger housing, a Ogapadoru fixed to the shaft driven by the driving source is driven by the shaft and disposed axially opposite sides of the Ogapadoru helix In the snow remover, the snow is moved to the central part of the auger paddle at the section, the received snow is jumped up at the snow throwing part at the central part of the auger paddle, and discharged to the outside through the shooter extending from the auger housing. The snow throwing portion provided in the central part of the auger paddle has a base portion fixed to the shaft, and the snow throwing portion is opened radially outward and in the rotational direction, and a pocket portion having a predetermined depth on the opposite side of the rotational direction. The pocket portion of the snow throwing portion includes a substantially inverted triangular back wall obliquely descending from the tip portion of the snow throwing portion base portion, and from the left and right sides of the lower end portion of the back wall toward the tip portion. Opposite, axial center of snow throwing part A bottom wall of a predetermined length formed in a substantially V shape so as to form a valley, and the bottom wall of the pocket portion of the snow throwing portion is inclined toward the outer side in the direction opposite to the auger paddle rotation direction And a delay angle is provided in the rotational direction .
In the first aspect, the snow throwing portion has a pocket portion , which faces from the left and right sides of the lower end portion of the back wall toward the tip portion, and a substantially inverted triangular back wall obliquely descending from the tip portion of the snow throwing portion base portion. A bottom wall having a predetermined length formed in a substantially V shape so that a central portion in the axial direction of the snow throwing portion is a valley, and the bottom wall of the pocket portion of the snow throwing portion is directed toward the outer periphery. Accumulated snow collected from the augers on both sides of the auger paddle that is inclined to the opposite side of the auger paddle rotation direction and provided with a lag angle in the rotation direction is improved, and more snow is thrown into the snow throwing part. It can be collected, held, and snowed together.
In addition, the bottom of the snow throwing portion including the pocket portion provided in the central portion of the auger paddle is inclined to the opposite side of the auger paddle rotation direction toward the outer peripheral direction, and a delay angle is provided in the rotation direction. The pocket part of the snow throwing part inclines toward the tip in the direction opposite to the rotation direction, and the snow throwing part has a phase lag in rotation with respect to the other parts of the auger paddle. Release inertia is easily applied, and snow can be released further.
Moreover, the snow throwing part of the auger paddle becomes a substantially V-shaped pocket part, so that more snow can be collected in the center of the snow throwing part, and snow can be thrown and discharged more collectively.
[ 0006 ]
In addition to Claim 1, Claim 2 attached a rubber to the front-end | tip part of the pocket-shaped snow throwing part provided in the center part of the auger paddle, and enabled this rubber to adjust the length to the radial direction of a snow throwing part.
According to the second aspect , when the rubber is worn, the rubber can be advanced to adjust the wear.
[ 0007 ]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is an external side view of a snowplow according to the present invention, FIG. 2 is a front view thereof, FIG. 3 is a longitudinal side view of an auger housing according to the present invention, and FIG. 3 is a view seen from the direction of arrow 4 in FIG. 3, FIG. 5 is an overall perspective view seen from the rear of the auger paddle according to the present invention, FIG. 6 is a plan view of the snow throwing unit according to the present invention, and FIG. FIG. 8 is a side view of the snow throwing unit according to the present invention, FIG. 8 is a view illustrating the snow releasing action of the snowplow according to the present invention as seen from the back, and FIG. 9 is a side view of the action view.
In the figure, Fr indicates the front, Rr indicates the rear, R indicates the right side, and L indicates the left side with reference to the traveling direction of the snowplow.
[ 0008 ]
FIG. 1 shows an external side view of a snowplow 1 according to the present invention, in which an engine 3 is mounted on a base frame 2, the area around the engine 3 is covered with a cover 4, and within the cover 4, at the rear and side of the engine. The fuel tank is accommodated, and in the drawing, a cap 5 for refueling protrudes above the rear part. Further, a handle 6 is extended from the lower part of the rear part of the base frame 2 so as to incline rearward, and wheels 8 constituted by rolling wheels are provided on the left and right of the plate 7 constituting the lower part of the base frame 2.
[ 0009 ]
An auger housing 9 is provided at the front portion of the base frame 2, and an auger paddle 30 (to be described later) is housed and disposed in the auger housing 9.
As shown in FIGS. 2 and 3, the auger housing 9 opens forward and downward, and includes an upper half 10 made of resin and a lower half 11 made of a steel plate inside, and the center of the auger paddle 30. They are joined and integrated by a beam-like connecting plate 12 that also serves as a snow drop erected in the width direction above the first half of the part.
[ 0010 ]
As shown in FIGS. 3 and 8, a substantially reverse funnel-shaped snow throwing duct 13 that opens downward is integrally formed at the center of the rear part of the auger housing 9 in the width direction. The lower portion of the duct 13 is large in the width direction, and the lower end opening of the snow throwing duct 13 is in the center of the auger housing 9 and has a size of about ½ or more of the width of the housing, It is formed so that the width becomes smaller upward.
A snow throwing shooter 14 that discharges snow is pivotably attached to the upper end of the snow throwing duct 13, and a guide cone 15 for adjusting the snow throwing direction is provided on the upper end of the shooter 14 so as to be able to stand up and down. The raising operation is performed by an adjustment handle 16 extending rearward of the guide cone 15.
[ 0011 ]
The auger paddle 30 is driven by connecting a drive pulley 18 provided on the output shaft 17 of the engine 3 and a driven pulley 19 housed in a case 11 a provided on one side of the lower half 11 of the auger housing 9 with a belt 20. The auger paddle 30 is rotationally driven by engine power. Output control of the engine 3 controls the carburetor of the engine 3 via the cable 21a by pulling the throttle lever 21 pivotally attached to the middle part of the handle 6 toward the front (rear Rr) or releasing the pulling force. To do.
In FIG. 1, reference numeral 22 denotes a scraper provided at the lower end of the rear surface 11b of the lower half 11 of the auger housing 9. The bolt 22a is loosened, and the scraper 22 is adjusted to advance and retreat through a long hole, thereby adjusting the snow scraping height. Then, the ground on which unevenness is generated by the snow removal work of the auger paddle 30 is stirred.
[ 0012 ]
The auger paddle 30 is rotatably mounted between the left and right side plates 11c and 11c of the lower half 11 of the auger housing 9 as shown in detail in FIGS. The appearance of the auger paddle 30 is as shown in the perspective view of FIG. 5, and this perspective view is a view of the auger paddle 30 as viewed from the rear left side.
The shaft 31 is formed by a pipe member having an intermediate portion 31b having a rectangular cross section, and as shown in the rear view of FIG. 4, both end portions 31a and 31a are disposed on both side plates of the lower half of the auger housing 9. 11c, 11c is rotatably supported through bearings 23, 23, and the shaft end on this side is connected to the driven pulley 19 disposed in a recess 11d formed in the middle part of one side plate 11b, Driven by power.
[ 0013 ]
Spirals 32 and 32 are disposed in each of the quarters of the shaft 31 from the left and right shaft ends in the axial direction to perform the function of bringing the snow collected by the rotation of the auger paddle 30 toward the center in the axial direction. The spiral portions 32 and 32 are annular in a side view, and FIG. 4 shows only the upper half portions of the left and right spiral portions 32 and 32 for the sake of easy understanding of the structure. However, as shown in FIGS. / 4 spiral ring halves 32a, 32a are combined vertically to form one annular spiral portion 32, 32 that is provided symmetrically.
The half portions 32a and 32a of the spiral portions 32 and 32 each include a main body 32b made of a steel plate and a rubber member 32c provided so that a distal end portion protrudes from the outer periphery of the main body 32b. Exchange. In FIG. 5, the arrow indicates the rotation direction of the auger paddle 30.
[ 0014 ]
The axial end side of the main body portion 32 a of the spiral portion 32 is attached and supported by elongated support plates 31 c and 31 c provided around the end portion of the shaft 31, and the inner portions in the axial direction are connected to both side portions of the snow throwing portion 33. To attach and support.
The snow throwing part 33 is provided in the center part periphery of the axis | shaft 31 between the spiral parts 32 and 32, and the length of an axial direction has the length of about 1/2 of the axis | shaft 31. The details of the single snow throwing part 33 are as shown in FIGS. 6 and 7, which are formed of a press-formed product of a steel plate and are slightly longer than ½ of the diameter of the auger paddle 30 and have a length in the radial direction of the auger paddle 30. Set its length to have.
[ 0015 ]
The base portion 33a is flat, and an engaging concave portion 33b serving also as a rib bulging upward is provided in the middle portion in the direction orthogonal to the axial direction thereof, as shown in FIGS. The shaft 31 engages with the intermediate portion 31b of the rectangular cross section. The base 33a is provided with mounting holes 33c (... indicates a plurality, the same applies hereinafter) on both sides of the engaging recess 33b, and the mounting holes 33c are spaced apart in the axial direction of the shaft 31. Provided.
The engaging recess 33b includes mounting holes 33d and 33d (shown only in FIG. 6) for coupling the snow throwing portion 33 to the intermediate portion 31b of the shaft 31, and is bolted to the intermediate shaft portion 31b.
[ 0016 ]
The tip portion of the base portion 33a is lowered one step downward, and a pocket portion 34 that stocks and holds the collected snow is provided so as to extend in the tip portion direction (radially outward).
The pocket portion 34 is provided with a back wall 34a inclined obliquely from the distal end portion of the base portion 33a in the inner diameter direction (direction closer to the shaft 31), and the back wall 34a is substantially reversed as clearly shown in FIGS. The bottom wall 34c, 34c which comprises a triangle shape and goes to the front-end | tip part direction from the right-and-left side 34b, 34b of the lower end part of the back wall 34a is provided.
[ 0017 ]
The left and right bottom walls 34c, 34c are bent from the sides 34b, 34b of the back wall 34a as shown in FIG. 7 and are provided in a predetermined length toward the distal end portion. As shown in FIG. 4, the central portion 34d is formed in a substantially V shape with a small angle so that it becomes a valley.
As shown in FIG. 7, the bottom wall 34c, 34c of the pocket portion 34 described above has a counterclockwise direction indicated by an arrow in FIG. 7 as the entire auger paddle 30 with respect to the surface of the base portion 33a. It is set so as to incline in the direction of the tip of the predetermined angle θ on the opposite side to the rotation direction.
[ 0018 ]
The above-described inclination angle θ is, for example, around 15 °, and in the figure, it is inclined including both side end portions of the bottom walls 34c, 34c with reference to the mounting portion on the distal end side displaced forward L from the base 33a axis. In the valley portion 34d indicated by 7, the inclination angle θ is merely translated downward by S. In addition, 34e bent and hung at the front-end | tip part of the bottom walls 34c and 34c are ribs.
At the respective end portions of the left and right bottom walls 34c, 34c of the pocket portion 34, the spiral portion mounting pieces 35, 35 that are slightly inclined outward are provided so as to be opened outward.
The spiral portion attachment pieces 35, 35 are formed in an arc shape so as to follow the outer shape of the spiral portions 32, 32, and include attachment holes 35a for connecting the axially inner portions of the spiral portions 32, 32. The portions of the spiral portion attachment pieces 35 and 35 are formed to extend to both end portions of the base portion 33a, and function as ribs 35b and 35b on both sides standing on the base portion 33a.
[ 0019 ]
By the above, the pocket part 34 formed in the front-end | tip part of the snow throwing part 33 is open | released in radial direction outward (front-end | tip part direction) and a rotation direction (upper part of FIG. 7), and the back wall 34a and bottom wall 34c, 34c. The pocket part 34 surrounded by is comprised. Under the present circumstances, the lower part of the spiral part attachment pieces 35 and 35 of the both sides of the pocket part 34 also functions as a part of pocket part.
As shown by the imaginary line A in FIG. 7, the snow throwing portion 33 described above is disposed symmetrically around the shaft 31 with a 180 ° phase shift, and the engaging recesses 33b and 33b respectively The bolts 39 (see FIGS. 4 and 5) are coupled so as to hold the intermediate section 31b having a rectangular cross section, and the base portions 33a that overlap in the vertical direction are coupled with the mounting holes 33c with the bolts 40, respectively. Integrate with 31.
[ 0020 ]
In the embodiment, each of the snow throwing portions 33 and 33 described above is configured by a press-formed product made of a steel plate material.
The inner ends of the spiral portions 32, 32 in the axial direction are coupled to and supported by the left and right spiral portion attachment pieces 35, 35 of the snow throwing portions 33, 33.
[ 0021 ]
By the way, rubber members 36 and 36 are bolted onto the bottom walls 34c and 34c of the pocket portion 34 of the snow throwing portion 33 described above. As shown in FIG. 7, each rubber member 36, 36 is formed to have a wall thickness with the tip portion 36a bulging downward, the base portion 36b is made thinner, and a long hole 37 is formed in the base portion 36b in the left-right direction in FIG. And are connected to mounting holes 34f provided in the bottom walls 34c, 34c with bolts 38.
Accordingly, when the tip of the rubber member 36 is worn, the bolt 38 is loosened and the rubber member 36 is advanced radially outward by the long hole 37 so that adjustment at the time of wear can be performed. .
[ 0022 ]
Next, the operation of the snow remover 1 will be described with reference to FIGS. The auger paddle 30 is rotationally driven by the engine 3 described above, and the rotational direction is as shown in FIGS.
By advancing the snowplow 1, the auger paddle 30 scratches the snow in front of and below the auger housing 9 first with the spiral portions 32 and 32. The snow is transferred to the central portion in the axial direction by the guide action of the spiral portions 32, 32 on both sides, is brought to the snow throwing portion 33 in the central portion, and is collected in this portion.
Due to the snow gathering action inward in the axial direction of the spiral portions 32, 32, the snow brought to the snow throwing portion 33 in the central portion has a pocket portion 34 as described above and has a bag shape. A large amount can be collected intensively. As the auger paddle 30 continues to rotate, the pocket portion 34 rotates and moves the rear plate 11b upward.
[ 0023 ]
The snow collected in the pocket portion 34 of the snow throwing portion 33 is a centrifugal force generated by the rotation of the pocket portion 34 about the shaft 31, and the centrifugal force is applied to the snow as shown in FIG. It jumps upward from the opening of the duct 13 and is discharged to the outside through the shooter 15 above this.
In discharging, the direction is adjusted by the guide cone 15 described above, and the discharging direction is adjusted by turning the shooter 14.
[ 0024 ]
By the way, since the snow collected in the snow throwing portion 33 is collected in the pocket portion 34 as described above, a larger amount of snow can be gathered in the snow throwing portion 33 than in the past. The amount of released snow is larger than before, and a snow remover with a large amount of snow removal can be obtained.
On the other hand, as shown in FIG. 9, the pocket portion 34 of the snow throwing portion 33 is inclined by θ ° on the opposite side to the rotation direction with respect to the base portion 33a forming the general surface of the snow throwing portion 33. It is easy to collect in the pocket part at the tip with the highest peripheral speed. In addition, the snow throwing portion 33 involved in snow throwing is delayed in rotation due to the inclined pocket portion 34. For this reason, inertia at the time of snow discharge is easy to attach, and it is possible to discharge snow farther while collecting a larger amount of snow than before.
The snow that has come to the front of the snow throwing duct 13 collides with the connecting plate 12 that also serves as the above-mentioned snow drop, falls downward as shown in FIG. 9, and is collected again by the spiral portions 32 and 32. Furthermore, the snow that is about to blow out from above and forward of the spiral portions 32 and 32 collides with the connecting plate 12 and falls, and is collected again by the spiral portions 32 and 32.
[ 0025 ]
In the embodiment, the left and right bottom walls 34c, 34c including the rubber member 36 of the pocket portion 34 are inclined so as to be symmetrically inclined so that the central direction is a valley, and are substantially V-shaped. As shown in FIG. 8, more snow can be collected in the central portion of the pocket portion 34 constituting the snow throwing portion, and the snow released at the time of upward discharge is the center portion side in the discharge direction as indicated by an arrow. The snowboard ducts 13 are gathered and jumped up and released along the tapered shape of the snow throwing duct 13 to efficiently collect and release snow.
[ 0026 ]
【The invention's effect】
The present invention exhibits the following effects by the above configuration.
According to claim 1, is rotatably accommodated in the auger housing, a Ogapadoru fixed to the shaft driven by the driving source is driven by the shaft, the snow of the Ogapadoru spiral portion arranged on axially opposite sides of the Ogapadoru In a snowplow that is brought to the center, the collected snow is splashed up at the snow throwing part in the central part of the auger paddle and discharged to the outside through the shooter extended from the auger housing. The snow part includes a base fixed to the shaft, and the snow throwing part is opened radially outward and in a rotational direction, and includes a pocket part having a predetermined depth on the opposite side of the rotational direction , the snow throwing part The pocket portion of the snow throwing portion base is inclined to the tip portion from the left and right sides of the lower end of the back wall, and the back wall of the substantially inverted triangle obliquely descending from the tip portion of the snow throwing portion base. Approximately V so that the center in the direction is a valley A bottom wall of a predetermined length formed in the mold, and the bottom wall of the pocket portion of the snow throwing portion is formed to be inclined in the direction opposite to the rotation direction of the auger paddle toward the outer peripheral direction and delayed in the rotation direction. Since the corners are provided, the accumulation of snow from the augers on both sides to the central part allows the snow throwing part to be pocketed so that more snow can be collected and discharged in the snow throwing part.
[ 0027 ]
Therefore, in the type of snow remover that collects and discharges snow to the snow throwing part in the central part with the spiral part of the rotating auger paddle, it is possible to collect, collect and discharge more snow in the pocket-like part compared to the past. In addition, it is possible to obtain a snow remover that has an excellent snow collecting function and snow throwing performance in the snow throwing part and an excellent snow removing function.
In addition, since the snow throwing part has left and right side walls and a back wall, and it is only necessary to provide a pocket-shaped part that is open radially outward and in the rotational direction, it is simple in terms of structure and has excellent snow removal performance. The machine can be provided at a low cost with a simple structure.
[ 0028 ]
In particular, in the present invention, the pocket portion provided in the central portion of the auger paddle has a substantially inverted triangular back wall obliquely descending from the tip of the snow throwing portion base, and the left and right sides of the lower end of the back wall in the direction of the tip. The bottom wall of a predetermined length is formed in a substantially V shape so that the central portion in the axial direction of the snow throwing portion is a valley, and the bottom wall of the pocket portion of the snow throwing portion is directed toward the outer periphery. In addition to the above effects, it is possible to collect snow at the tip with the highest peripheral speed due to the inclination. A rotational phase delay can be generated in the pocket-shaped portion of the snow throwing portion, and the inertia at the time of snow discharge is easily attached, so that more snow can be collected and discharged together and farther away.
Further, the above effect can be realized with a simple configuration in which the bottom of the pocket portion of the snow throwing portion is inclined toward the tip portion.
[ 0029 ]
In addition, since the bottom of the snow throwing portion provided with the pocket portion provided in the central portion of the auger paddle has a substantially V shape so that the central portion in the axial direction of the auger paddle becomes a valley, in addition to the above effects, The snow part has a roughly V-shaped pocket, and can collect more snow more efficiently in the center of the snow throwing part. A snow remover with excellent snow throwing performance can be obtained.
[ 0030 ]
In the second aspect, in addition to the first aspect, a rubber is attached to the tip of the pocket-shaped snow throwing portion provided in the central portion of the auger paddle, and the length of the rubber is adjustable in the radial direction of the snow throwing portion. When the rubber is worn, the rubber can be advanced to easily adjust the wear.
[Brief description of the drawings]
1 is an external side view of a snowplow according to the present invention. FIG. 2 is a front view of a snowplow according to the present invention. FIG. 3 is a longitudinal side view of an auger housing according to the present invention. FIG. 5 is a view of the paddle as viewed from the rear, and is a view of the paddle as viewed from four directions in FIG. 3. FIG. 5 is an overall perspective view of the auger paddle as viewed from the rear. FIG. 7 is a vertical side view of the snow throwing unit according to the present invention. FIG. 8 is a view illustrating the snow discharging action of the snow removal machine according to the present invention as viewed from the rear. Side view of action diagram [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Snow remover, 3 ... Engine which is drive source, 9 ... Auger housing, 14 ... Shooter, 30 ... Auger paddle, 31 ... Shaft, 32 ... Spiral part, 33 ... Snow throwing part, 34 ... Pocket-shaped part, 34c ... Pocket 34d ... valley, θ ... inclination angle, 36 ... rubber member of the snow throwing part.

Claims (2)

Is rotatably accommodated in the auger housing, a Ogapadoru fixed to the shaft driven by the driving source is driven by the shaft, submitted snow in the middle portion of the Ogapadoru spiral portion arranged on axially opposite sides of the Ogapadoru, In the snow remover that jumps up the snow gathered at the snow throwing part in the center of the auger paddle and releases it to the outside through the shooter extending from the auger housing,
The snow throwing portion provided in the central portion of the auger paddle includes a base portion fixed to the shaft, and the snow throwing portion opens radially outward and in the rotational direction, and has a pocket having a predetermined depth on the opposite side of the rotational direction. Part
The pocket portion of the snow throwing portion projects from the tip of the snow throwing portion base toward the tip from the substantially inverted triangular back wall and the left and right sides of the lower end of the back wall. A bottom wall of a predetermined length formed in a substantially V shape so that the axial center of the snow part is a valley,
The bottom wall of the pocket portion of the snow throwing portion is inclined toward the opposite side of the auger paddle rotation direction toward the outer peripheral direction, and a delay angle is provided in the rotation direction.
A snowblower characterized by that. The snow remover according to claim 1 , wherein a rubber is attached to a tip portion of a snow throwing portion including a front pocket portion , and the length of the rubber can be adjusted in a radial direction of the snow throwing portion.

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