JP7006921B2 - snowblower - Google Patents

Description

The present invention relates to a snowplow in which a snow removal auger and a snow removal section for throwing the scraped snow by a blower are provided in the front portion of the machine body, and a snow removal plate can be arranged further in front of the snow removal section. ..

A snowplow equipped with a snow auger and a snowplow for throwing snow by a blower is known. Further, a snowplow capable of further arranging a snowplow in front of the snowplow section is also known. For example, the "snowplow" of Japanese Patent Application Laid-Open No. 2005-139666 is known. When there is a place where a sufficient snow throwing place can be secured, this snowplow throws snow with a blower of the snow removing part to perform snow removal work, and when the snow throwing place etc. cannot be sufficiently secured or the amount of snow is small. The snow removal work is performed by switching to the work of pushing out the snow with the snow removal board. Furthermore, by turning the snow removal plate in the front-rear direction with respect to the traveling direction according to the snow removal location, it is possible to change the direction of pushing out the snow to the forward direction, the left direction, and the right direction with respect to the traveling direction. Has been done.

Japanese Unexamined Patent Publication No. 2005-139666

In the snow blower of Patent Document 1, the turning center axis of the snow removal plate for changing the pushing direction of snow is provided substantially in the center of the left-right width of the machine. The member of the turning center axis of the snow removal plate causes the snow removal plate to be positioned more forward. There was a problem of hitting the snow removal plate when the auger and the blower were driven to throw snow in a non-working state where the snow removal plate was positioned above the auger. In particular, when the shooter and the deflector are used to direct the snow throwing direction to the front and the bottom, which are short distances, the snow removal plate is hit more and the snow cannot be thrown efficiently.
Therefore, in the present invention, the snowplow is tilted in the front-rear direction with respect to the traveling direction of the snowplow in the working state of the snowplow, so that snow can be removed to the side of the snowplow and snow is removed. It is an object of the present invention to provide a snowplow capable of efficient snow removal work by keeping the height of the snowplow in the non-working state of the board low to prevent the snow thrown by the blower from hitting the snowplow.

In order to achieve the above object, the aspect of the present invention is to remove snow having an aircraft, an auger provided at the front portion of the aircraft and rotating in an auger housing that opens toward the front, and a blower provided at the rear of the auger housing. It is possible to switch between the snowplow working state located in front of the snowplow and the non-working state of the snowplow located above the auger housing, and the switching is on the rear side of the left and right ends of the snowplow. It is a snowplow that has a snowplow for snow removal, which is provided and has a structure that can be swiveled and switched by a rotating arm that is rotatably attached to the outer side of the left and right side plates of the auger housing. The gist is that the snowplow is provided with support arms arranged on both the left and right sides of the snowplow that is inclined in the front-rear direction with respect to the traveling direction.

According to the present invention, it is possible to incline the snowplow in the front-rear direction with respect to the traveling direction of the snowplow in the working state of the snowplow, and the height of the snowplow in the non-working state is kept low by a blower. It is possible to provide a snowplow that can prevent the snow thrown from hitting the snow removal board and perform efficient snow removal work.

It is a side view which shows an example of the non-working state of the snow removal plate of the snow blower which concerns on embodiment of this invention. It is a front view which shows an example of the non-working state of the snow removal plate of the snow blower which concerns on embodiment of this invention. It is an enlarged side view which shows an example of the state which the blade part is retracted in the working state of the snow removal plate of the snow blower which concerns on embodiment of this invention. It is an enlarged plan view which shows an example of the state which the blade part is retracted in the working state of the snow removal plate of the snow blower which concerns on embodiment of this invention. It is an enlarged side view which shows an example of the tilted state which made the left end part of the blade part forward in the working state of the snow removal plate of the snowplow which concerns on embodiment of this invention. FIG. 3 is an enlarged plan view showing an example of an inclined state in which the left end portion of the blade portion is positioned forward in the working state of the snow removal plate of the snowplow according to the embodiment of the present invention. 4 is a cross-sectional view of the attachment of the support frame portion and the support arm portion in FIG. 4 in cross section taken along the line AA. FIG. 3 is a cross-sectional view taken along the line BB of the turning fulcrum portion on the left side in the traveling direction of the rotating arm portion in FIG.

Embodiments of the present invention will be described with reference to FIGS. 1 to 8.
The embodiments shown below are for exemplifying the structure and arrangement for embodying the technical idea of the present invention, and the technical idea of the present invention describes the shapes, structures, etc. of the components below. It is not specific to the thing. The technical idea of the present invention may be modified in various ways within the technical scope specified by the claims described in the claims.

In the description of the embodiment of the present invention, when there are parts having the same function on the left and right, the one on the left is suffixed with "L" and the one on the right is "R". When the suffix is attached and both are called together, or when they are called alone, the suffix may not be attached. For example, even if the left first support arm is 650L and the right first support arm is 650R, the first support arm may be called 650 when the two are not distinguished. Further, for convenience of explanation, the terms "left", "right", "front" or "rear" will be used, but "left" and "right" are the directions of travel in the working state of the snowplow of the present invention, respectively. "Front" or "rear" indicates the direction of the snowplow on the auger side in the working state, and "rear" indicates the direction of the snowplow on the operation unit side. Further, although the phrase "upper" or "lower" is used for explanation, "upper" or "right" indicates the orientation of the snowplow of the present invention in the working state, respectively.

(Snowplow configuration)
The snowplow 1 is provided with traveling crawler belts 4 on the left and right sides of the machine body 2 for traveling, and drives the traveling crawler belts 4 to travel back and forth. An engine in which a snow removal unit 5 is provided in the front part of the machine body 2, an operation unit 3 for operating the machine body 2 is provided in the rear part of the machine body 2, and an engine that is a power source of the traveling part and the snow removal part 5 is housed in the center part of the machine body 2. A unit 21 is provided.

The operation unit 3 is provided with handles 30 to be gripped and operated by the operator on the left and right, and operation levers and switches for operating each part of the machine body 2 are provided in the central portion thereof. Operate to remove snow.

The snow removal section 5 provided on the front portion of the machine body 2 includes an auger 51, a blower 515, a shooter 52, a deflector 520, and an auger housing 50. The auger 51 is provided on a horizontal rotation axis orthogonal to the traveling direction, and by rotationally driving the auger 51, the snow in front of the auger 51 is collected at the center of the auger 51. The collected snow is thrown upward from the shooter 52, which is provided behind the central portion of the auger 51 and is rotationally driven around the traveling direction. The direction of snow throwing can be changed by turning the shooter 52 horizontally. Further, the snow throwing angle can be changed by changing the angle by turning the deflector 520 at the upper end of the shooter 52 in the vertical direction. The auger 51 is covered with an auger housing 50 having an open front portion, and is provided for safety such as inducing snow from the auger 51 and preventing being caught in the auger 51.

In front of the snow removal unit 5 shown in FIG. 3, a snow removal plate 6 for pushing out snow by advancing the snow removal machine 1 is arranged. As shown in FIG. 1, the snow removal plate 6 can be switched between a snow removal plate working state located in front of the snow removal unit 5 and a snow removal plate non-working state located above the auger housing 50. The snow removal plate 6 is switched by a rotating arm 60 provided behind each of the left and right ends of the snow removal plate 6 and rotatably attached to the outer side of the auger housing side plate 500 at the left and right ends of the auger housing 50. It has a possible structure. In the non-working state of the snow removal plate 6 in which the snow removal plate 6 shown in FIG. 1 is located above the auger housing 50, the snow removal work of driving the snow removal unit 5 to throw snow is possible.

The snow removal work of driving the auger 51 and the blower 515 of the snow removal unit 5 to throw snow is efficient in a place where a sufficient snow throwing place or the like can be secured. However, when a sufficient snow-throwing place or the like cannot be secured or the amount of snow is small, the snow-removing work can be efficiently performed by switching to the snow-removing work of pushing out the snow by the snow-removing plate 6. The snow removal work by the snow removal plate 6 is performed after the drive of the snow removal unit 5 is stopped and the snow removal plate 6 is swiveled so as to be located in front of the snow removal unit 5. The work on the snowplow plate 6 includes a work of pushing the snow forward and a work of tilting the snowplow plate 6 in the front-rear direction to move the snowplow 1 forward and push the snow to the side of the snowplow 1.

(Whole snow removal board)
The snow removal plate 6 is attached to the side of the snow removal portion 5 and is attached to a rotating arm 60 for making it swivel in the vertical direction with respect to the snow removing portion 5 and a snow removing plate 6 attached to the tip of the rotating arm 60. The support frame 64, which is the base of the front-rear inclination, the support arm portion 65 for attaching one end to the support frame 64 so that the snow removal plate 6 can be inclined in the front-rear direction, and the other end of the support arm portion 65. It is equipped with a blade portion 69 for pushing snow.

(Rotating arm)
The rotating arm 60 is located on the outer side of the auger housing side plate 500 fixed to the left and right side ends of the auger housing 50. The rotating arm 60 is rotatably attached in the vertical direction via a fulcrum receiving portion 61 attached to the outer surface of the auger housing side plate 500.

The rotating arm 60 shown in FIGS. 3 and 5 is made of sheet metal and has an isosceles triangle shape having corners above the side view. A part of the upper side and the rear side extending upward from the front of the rotating arm 60 is bent inward in an L shape to give rigidity. The upper side bent in an L shape inward of the rotating arm 60 forms an upper bent portion 602, and the rear side forms a rear bent portion 603.
On the rear side of the rotary arm 60, a swivel fulcrum shaft 601 which is a fulcrum shaft for the swivel arm 60 to swivel up and down is provided. The swivel fulcrum shaft 601 of the swivel arm 60 shown in FIG. 8 is a pin-shaped member, and is fixed to the inside of the swivel arm 60 perpendicularly to the surface of the swivel arm 60.

A fulcrum receiving portion 61 is provided on the outer side surface of the auger housing side plate 500 in order to support the swivel fulcrum shaft 601. The fulcrum receiving portion 61 is fixed to the circular plate-shaped member perpendicularly to the plate-shaped member with the cylindrical boss portion 611 facing outward. By inserting the swivel fulcrum shaft 601 into the boss portion 611, the swivel arm 60 can swivel in the vertical direction.

An elastic body 63 is attached around the swivel fulcrum shaft 601 and the boss portion 611. The elastic body 63 is provided to assist the upward rotation of the rotating arm 60. The elastic body 63 shown in FIGS. 3, 5 and 8 is a torsion coil spring. The tip of one end of the arm of the elastic body 63 is bent and locked by the inner surface of the rear bent portion 603, and the tip of the other end is a rectangular shape provided vertically near the center of the fulcrum receiving portion 61. It is locked to the locking portion 612 of the plate. The elastic body 63 urges the snow removal plate 6 in a direction of turning upward, and the operating force operated by the operator to bring the snow removal plate 6 into a non-working state is reduced.

(Support frame)
A support frame 64 of a rectangular plate long in the left-right direction is fixed with the normal of the plate surface facing the front-rear direction so as to bridge the front portions of the rotation arms 60 provided on the left and right sides of the auger housing side plate 500. Has been done. At the four sides of the rectangular plate of the support frame 64, a rectangular plate for ensuring rigidity toward the front perpendicular to the plate surface, long side ribs 64a arranged on the long side, and on the short side. The short side rib 64b to be arranged is fixed. Further, a support hole 64c provided at each of the left and right ends of the long side ribs 64a facing each other and a storage hole 64d located inside the respective support holes 64c are provided. The support holes 64c and the storage holes 64d arranged on the opposite long side ribs 64a are set so as to be located coaxially.

(Support arm part)
A support arm portion 65 for supporting the blade portion 69 is attached to the support hole 64c between the long side ribs 64a facing each other. In FIGS. 1 and 6, the support arm portion 65 includes a first support arm 650 whose one end is supported by a support hole 64c, and a second support arm 680 further connected to the other end of the first support arm 650. It is equipped with.

(1st support arm)
One end of the first support arm 650 is attached to the support hole 64c between the two long side ribs 64a provided above and below the support frame 64. The first support arm 650 includes a left first support arm 650L attached to the support hole 64c on the left side in the traveling direction of the support frame 64 and a right first support arm 650L attached to the support hole 64c on the right side in the traveling direction of the support frame 64. There is 650R.

The first support arm 650 is a parallel quadrilateral plate 651 arranged vertically, and each of the plates 651 is provided in parallel with the slope of the plate 651 facing up and down. A cylindrical bearing portion 652 whose axis is perpendicular to the plate surface is arranged at each pair of diagonal corners of the parallel quadrilateral plates 651 arranged vertically and vertically so as to connect the two plates 651. It is stuck. The bearing portion 652 penetrates the plate 651 and is fixed. Further, the reinforcing plate 653 is fixed to the plate surface perpendicular to the surface of the plate 651 so as to close the space created by the two plates 651 and the two bearing portions 652, and the rigidity of the first support arm 650 is increased. I have secured it.

A support pin 66, which is positioned coaxially with the support hole 64c of the long side rib 64a and has a head for preventing the bearing from coming off, is inserted into the inner diameter of the bearing portion 652. By inserting the support pin 66, one end side of the first support arm 650 is supported, and the other end side of the first support arm 650 is provided so as to be rotatable in the left-right direction. Further, a first fixing hole 654 is provided in the vicinity of the bearing portion 652 on the other end side of the plate 651 constituting the first support arm 650. The first fixing hole 654 is used when fixing the swivel of the second support arm 680, which will be described later.

(2nd support arm)
A second support arm 680 is attached to the other end side of the first support arm 650. The second support arm 680 includes a left second support arm 680L attached to the left first support arm 650L and a second support arm 680R attached to the right first support arm 650R.

In the second support arm 680, an oblong plate 681 having a long side and a short side and rounded corners on the short side is arranged with the plate surface facing in the vertical direction. Two plates 681 are arranged so as to be parallel to each other and to sandwich the first support arm 650 up and down. The two plates 681 are provided with a first arm mounting hole 682 for attaching to the first support arm 650 on the inner side of both ends in the longitudinal direction of the plate 681 and closer to the first support arm 650 from the central portion. Further, a second fixing hole 683 is provided at one end on the first support arm 650 side, and a blade mounting hole 684 for attaching a blade portion 69, which will be described later, is provided at the other end. .. The first arm mounting hole 682, the blade mounting hole 684, and the second fixing hole 683 provided in the vertically arranged plates 681 are located coaxially with each other.

Between the two plates 681, between the blade mounting hole 684 and the first arm mounting hole 682, the reinforcing plate 685 is arranged perpendicular to the surface of the plate 681. Further, the rear end side from the central portion of the reinforcing plate 685 is bent inward with the vertical direction shown in FIG. 5 as the axis. In FIG. 6, the bending angle of the reinforcing plate 685 is 5 to 20 degrees.

The support pin 66 is inserted into the first arm mounting hole 651 coaxially with the bearing portion 652 on the other end side of the first support arm 650. The second support arm 680 is configured to be rotatable in the left-right direction with the first arm mounting hole 651 and the support pin 66 as fulcrum axes.

(Fixing when the second support arm is deployed)
The second fixing hole 683 is used when fixing the swivel of the second support arm 680 with respect to the first support arm 650. The second support arm 680 is swiveled with respect to the first support arm 650 so that the second fixing hole 683 and the first fixing hole 654 are coaxially positioned. By inserting the rod-shaped regulator 67 bent in an L shape into the second fixing hole 683 and the first fixing hole 654 located coaxially, the second fixing hole 683 becomes the second support for the first support arm 650. The turning of the arm 680 is restricted. At this time, the first support arm 650 and the second support arm are in a deployed state in which the blade mounting hole 684 is separated from the bearing portion 652 of the first support arm 650 fixed to the support hole 64c.

(Fixing when the second support arm is retracted)
Further, when the restricting body 67 was removed, the first support arm 650 was swiveled inward of the snowplow 1, and the second support arm 680 was swiveled outward, the first fixing hole 654 was provided in the support frame 64. It can be positioned coaxially with the storage hole 64d. By inserting the restricting body 67 into the storage hole 64d located coaxially with the first fixing hole 654, the first support arm 650 is fixed in rotation and is in the stored state. The first support arm 650 and the second support arm 680 in the retracted state are located between the long side ribs 64a provided at the upper and lower ends of the support frame 64, and are set so as not to project forward. Further, in the retracted state, the support hole 64c provided in the support frame 64 and the blade mounting hole 684 of the second support arm 680 are in a state of being close to each other.

(Blade part)
By the way, the blade portion 69 is attached to the blade attachment hole 684 of the second support arm 680. The blade portion 69 has a blade 691, a rib 692, a mounting base 693, a blade mounting portion 694, and a handle portion 695.

In the working state of the snow removal plate 6 in FIG. 3, the blade 691 has a circular arc shape with a lateral cross section in which a long plate in the left-right direction is curved forward with a concave portion directed to push the snow. The width of the blade 691 is equal to or wider than the width of the outer end of the auger housing 50. A rib 692 for maintaining the rigidity of the blade 691 is attached along the outer surface of the arcuate portion at the end of the blade 691.

Further, on the arcuate outer surface of the blade 691, at the inner ends of the ribs 692 on both the left and right sides, a mounting base 692 in which a rectangular plate is bent at a right angle is provided, and the ridgeline of the bending is parallel to the left and right direction of the blade 691. It is attached to. In FIG. 3, one surface of the bent mounting base 692 is directed to the rear of the snowplow 1. On the rearward facing surfaces of the mounting bases 692 provided on the left and right sides of the blade 691, a blade mounting portion 694 composed of a triangular plate for mounting the second support arm 680 is a surface of the mounting base 692. It is fixed vertically. Two blade mounting portions 694 provided on the mounting base 692 are provided with their respective surfaces parallel to each other in the vertical direction. The upper and lower blade mounting portions 694 are set so as to be located between the plates 681 provided above and below the second support arm 680.

The blade mounting portion 694 is provided with a mounting hole 695 in the central portion, is positioned coaxially with the blade mounting hole 684 of the second support arm 680, and the support pin 66 is inserted from above, whereby the blade portion 69 is the second support arm. It is provided so as to be rotatable around the support pin 66 with respect to the 680. That is, the second support arm 680 and the blade portion 69 are in a connected state. Further, the rotating arm 60, the support frame 64, the first support arm 650 and the second support arm 680 are in a connected state.

(Blade tilting operation)
The support frame 64, the left first support arm 650L, the right first support arm 650R, the left second support arm 680L, the right second support arm 680R, and the blade portion 69 are connected by being attached as described above. The blade portion 69 shown in FIG. 4 is in a retracted state in which the concave portion is directed to the front of the snowplow 1, and the blade portion 69 shown in FIG. Can be switched to. Switching between the retracted state and the inclined state of the blade portion 69 is performed after the snow removal plate 6 is put into the working state.

(Storage of blade part)
To switch the blade portion 69 to the retracted state, the left first support arm 650L and the right first support arm 650R are swiveled inward along the support frame 64. The left second support arm 680L and the right second support arm 680R are bent so as to be positioned in the forward direction with respect to the left first support arm 650L and the right first support arm 650R. At the same time, the blade portion 69 connected to the second support arm 680 is pulled toward the support frame 64 so as to be interlocked with the second support arm 680, and is in the retracted state shown in FIG. The front end surface of the plate 651 of the first support arm 650 in the retracted state is in contact with the rear surface of the reinforcing plate 685 of the second support arm, and the mounting hole 695 of the blade portion 69 is the support frame 64. It is in a state close to the support hole 64c.

The second fixing hole 683 of the left second support arm 680L and the right second support arm 680R in the retracted state is positioned coaxially with the storage hole 64d, and the restrictor 67 is inserted to insert the left second support arm 680L and the right second support arm 680L. 2 Fix the support arm 680R. Along with the fixing of the second support arm 680, the first support arm 650 and the blade portion 69 are also fixed in conjunction with each other. The first support arm 650 in the retracted state is in a state of being stored between the long side ribs 64a arranged above and below the support frame 64, and suppresses the blade portion 69 from projecting forward. The blade portion 69, which is in the retracted state and has the concave portion facing forward, can push the snow forward as the snowplow 1 travels forward.

(Inclination of blade)
Switching to the tilted state of the blade portion 69 includes a left tilted state in which the left side of the blade portion 69 is tilted forward and a right tilted state in which the right side of the blade portion 69 is tilted forward. To switch from the blade retracted state to the left tilted state, remove the regulator 67 from the storage hole 64d on the second fixing hole 683 side of the left second support arm 680L in the blade retracted state, and fix the left second support arm 680L. To cancel. The blade portion 69 can be swiveled forward with the support pin 66 inserted in the blade mounting hole 684 of the right second support arm 680R as a fulcrum axis. Due to the rotation of the blade portion 69, the blade portion 69 is tilted to the left as shown in FIG. 6, and the left first support arm 650L and the left second support arm 680L are in a mutually expanded state, and the first fixing hole is formed. The 654 and the second fixing hole 683 are located coaxially. By inserting the restricting body 67 removed from the storage hole 64d into the first fixing hole 654 and the second fixing hole 683 located coaxially, the left inclined state of the blade portion 69 can be fixed.

The blade portion 69 that has been tilted to the left faces the concave portion of the blade 691 diagonally forward to the right. When the blade portion 69 is tilted to the left, the snowplow is driven forward and the snow from the front is scraped upward of the blade 961 while sliding the snow to the right along the recess of the blade 961. It can be swept to the right of 1.

The left tilted state in which the left side of the blade portion 69 is tilted forward has been described, but since the operation in the left tilted state is operated by changing the operation in the left tilted state, a detailed description of the switching method will be omitted.

(Non-working state of snow removal board)
When the snow removal plate 6 is put into a non-working state, it is performed after switching to the retracted state of the blade portion. A handle portion 696 that the operator grips and operates when the snow removal plate 6 is switched between the working state and the non-working state is attached to the upper portion of the blade 691. The handle portion 696 is a rod-shaped member bent in a U shape, and the end portion thereof is fixed to the upper portion of the blade 691 in the snow removal plate working state. The operator can grip the handle portion 696 and swivel the snow removal plate 6 up and down with the swivel fulcrum shaft 601 as an axis to switch between a working state and a non-working state. Switching between the working state and the non-working state by the operator is easy because the elastic body 63 urges the snow plate 6 upward so as to support the weight of the snow removal plate 6. Further, the blade portion 69 in the non-working state of the snow removal plate 6 is in the retracted state, and the amount of protrusion of the blade portion 69 upward is suppressed to a low level. When snow is thrown by the auger 51 and the blower 515, especially when the snow is thrown forward and downward, the snow thrown does not hit the blade portion 69 located above the auger 51, and efficient snow removal becomes possible. There is.

The snowplow 1 configured as described above is tilted in the front-rear direction with respect to the traveling direction of the snowplow 1 in the working state of the snowplow plate 6 to enable snowplow to be removed to the side of the snowplow. By keeping the height of the snowplow in the non-working state of the snowplow low to prevent the snow thrown by the blower from hitting the snowplow, efficient snow removal work can be performed.

Although the present invention has been described above based on the above embodiment, the present invention is not limited to the above embodiment, and it is needless to say that various modifications can be made without departing from the gist thereof.

The present invention has a traveling portion with a crawler belt, tires, etc., and is provided with a snow-plowing auger and a snow-removing portion for throwing the scraped snow with a blower at the front of the machine, and snow is removed further in front of the snow-removing portion. It can be applied to snowplows that allow the board to be placed.

1 Snowplow 2 Aircraft 21 Engine 3 Operation 30 Handle 4 Traveling crawler belt 5 Snowplow 50 Auger housing 500 Auger housing side plate 51 Auger 515 Blower 52 Shooter 520 Deflector 6 Snowplow 60 Rotating arm 63 Elastic body 64 Support frame 65 Support arm part 650 1st support arm 66 Support pin 67 Restrictor 680 2nd support arm 69 Blade part 691 Blade 696 Handle part

Claims (3)

With the aircraft
An auger that rotates in an auger housing that opens forward and is provided at the front of the machine, a snow removal unit that has a blower provided at the rear of the auger housing, and the like.
It is possible to switch between the snow removal board working state located in front of the snow removal section and the snow removal board non-working state located above the auger housing, and the switching is on the rear side of the left and right ends of the snow removal board. A snow removal plate for snow removal, which is provided in the auger housing and has a structure that can be swiveled and switched by a rotating arm that is rotatably attached to the outer side of the left and right side plates of the auger housing.
It is a snowplow with
The snow removal plate is provided with support arm portions arranged on both left and right sides in the traveling direction of the snow removal plate, which are inclined in the front-rear direction with respect to the traveling direction.
The support arm portion includes a first support arm that is provided so that the other end side can be swiveled in the left-right direction by supporting one end side.
A second support arm that is attached to the other end side of the first support arm and can swivel in the left-right direction with the other end side of the first support arm as a fulcrum axis.
A snowplow featuring a snowplow. In the support arm portion, the snow removal plate is stored by bending the second support arm so as to be positioned in the forward direction with respect to the first support arm, and the second support arm is the first. Each state of the tilted state in which the first support arm and the second support arm are expanded in the forward direction with respect to the support arm and tilted in the front-rear direction with respect to the traveling direction of the snow removal plate. The regulator to be fixed and
The snowplow according to claim 1, further comprising. The rotating arm is provided with an elastic body so as to urge the snow removal plate in the upward turning direction.
The snowplow according to claims 1 and 2, further comprising.

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