Rotary snowplow

Abstract

To provide a rotary snowplow suitable for removing snow from roadsides.SOLUTION: In a rotary snowplow 1 which includes a traveling vehicle 2 and a snow removal device 3 which has an auger 8 which is provided in front of the traveling vehicle 2 to collect snow, as the snow removal device 3 is provided so as to be movable in the width direction of the traveling vehicle 2, and a hydraulic cylinder 28 is provided to move the snow removal device 3 in the width direction, by moving the snow removal device 3 to the road sides using the hydraulic cylinder 28, snow on the road sides outside the vehicle width can be taken in by the auger 8 and removed. Further, since brush means 61 for removing snow adhering to the wall surface of the road side is provided on the left side of the snow removal device 3, the snow adhering to the wall surface of the road side can be scraped off by the brush means 61 and removed.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a rotary snow removal vehicle, and more particularly to a rotary snow removal vehicle provided with a snow removal device in front of the vehicle body.

Background Art

[0002] Conventionally, as this type of vehicle, a snow removal device composed of an auger, a blower, and a chute is provided at the front part of the vehicle body. During transportation, the snow removal device is raised as a whole to a predetermined height and separated from the road surface. During snow removal operations, the snow removal device is lowered, and the auger scrapes up the snow accumulated on the road and the blower throws the snow through the chute to an appropriate location outside the road (for example, Patent Document 1). There is also a rotary snow removal vehicle (for example, Patent Documents 2 and 3) that efficiently removes the snow accumulated on the road and discards the snow accumulated by the auger using the air flow and centrifugal force generated by the blower. Such a rotary snow removal vehicle is configured by mounting a snow removal device having a helical ribbon-shaped auger and a rotary blower on the front part of the vehicle.

[0003] In addition, in the rotary snow removal vehicle of Patent Document 1, it includes a hydraulic cylinder for raising and lowering the snow removal device and a hydraulic pump driven by an engine for vehicle running and work, and drives the snow removal device using this hydraulic pump as a power source.

Patent Document 1

Patent Document 2

Patent Document 3

Disclosure of the Invention

Problems to be Solved by the Invention

[0004] While the rotary snowplow described above can efficiently remove snow by using the airflow and centrifugal force generated by the blower to discard the snow collected by the auger, it could not remove snow that had accumulated on walls such as the shoulders of the roads because it only collected snow from the front of the vehicle.

[0005] Furthermore, the vehicle uses the engine for propulsion to drive a hydraulic pump, and the hydraulic pump then drives the snow removal device. Since the hydraulic pump is driven by the rotational force of the engine, and the engine's output fluctuates due to changes in driving resistance during snow removal, the output of the hydraulic pump also fluctuates, which made the drive control of the snow removal device complex.

[0006] Furthermore, because the snow is dumped from the road using a blower, there is a problem in that its use is limited at sites where there is no place to dump the snow.

[0007] By the way, conventional rotary snowplows are all vehicles specifically designed for snow removal and therefore could not be used outside of the snowy season.

[0008] Therefore, in view of the above-mentioned problems, the present invention aims to provide a rotary snowplow suitable for snow removal from the walls of road shoulders. [Means for solving the problem]

[0009] To achieve the above objective, the invention according to claim 1 , run A rotary snowplow comprising a vehicle and a snow removal device having an auger for collecting snow, provided in front of the vehicle, wherein the snow removal device is provided to be movable in the width direction of the vehicle, and the snow removal device is provided with a means for moving the snow removal device in the width direction. The snow removal device is provided with a snow removal device that discharges the collected snow from a chute to the rear, and a transfer device that sends the snow discharged from the chute to the rear of the traveling vehicle, the transfer device comprising an inclined guide path on which the snow slides down, and a snow input opening enlargement device that enlarges the snow input opening at the front of the guide path, the guide path having a bottom surface on which the snow slides down, and left and right side surfaces provided on both sides in the width direction of the bottom surface, and having an open top, the snow input opening enlargement device comprising a snow input opening enlargement member and an opening / closing drive means for opening and closing the snow input opening enlargement member, the rear of the snow input opening enlargement member being rotatably attached to the upper edge side of the side surface of the guide path, the snow input opening enlargement member opening at the rear so that the front side moves away from the bottom surface, and closing along the upper edges of the left and right side surfaces It is characterized by the following:

[0010] The invention according to claim 2 is characterized in that a brush means for removing snow adhering to the wall surface of the road shoulder is provided on one side in the width direction of the snow removal device.

[0011] The invention according to claim 3 is characterized in that the brush means has bristles that protrude laterally arranged in a vertical direction, and the arrangement of the tips of these bristles corresponds to the shape of the wall surface.

[0012] Claim 4 The invention relating to this is before The snow discharged from the chute is sent to a snow-melting device mounted on the cargo bed of the aforementioned vehicle. The aforementioned It is characterized by being equipped with a transfer device.

[0013] Claim 5 The invention relating to this invention is characterized in that the snow removal device is detachably attached to the vehicle.

[0014] The invention according to claim 6 is characterized in that the snow input opening enlargement member has an upper plate portion and left and right side plate portions that are suspended downward from the left and right edges of the upper plate portion, and these left and right side plate portions are in close proximity to the inner surfaces of the left and right side portions in front of the guide path and can be inserted into the left and right side portions, and the side plate portions are configured to close the gap between the upper plate portion and the upper edge of the side portion when the snow input opening enlargement member is opened. [Effects of the Invention]

[0015] According to the configuration of claim 1, by moving the snow removal device to the shoulder side of the road using a moving means, snow on the shoulder side of the road that is wider than the width of the vehicle can be collected and removed by the auger.

[0016] According to the configuration of claim 2, snow adhering to the wall surface of the road shoulder can be removed by scraping it off with a brush.

[0017] According to the configuration of claim 3, the tips of the bristles make even contact with the wall surface of the road shoulder, so that the attached snow can be uniformly scraped off by the brush.

[0018] Furthermore, claims 1 According to this configuration, the snow discharged from the chute can be sent to the rear of the vehicle by a transfer device.

[0019] Claim 4 According to this configuration, the snow discharged from the chute can be sent to the snow melting device by a transfer device.

[0020] Furthermore, claims 1 According to the configuration, transferThe device can send snow to the snow melting device for melting without using power for transportation, and moreover, the snow input port can be enlarged to prevent snow from spilling out of the chute.

[0021] Also, according to the configuration of claim 1 , the snow input port enlarging member is opened and closed by the opening and closing drive means, and the snow input port is enlarged. Also, when the snow becomes clogged, the process becomes complicated. However, since the snow input port enlarging member is provided on the front side of the guide path and the upper part is open, it has a structure in which snow is not easily clogged.

[0022] Claim 5 , according to the configuration, when snow removal is not performed, the snow removal device can be removed, and when a snow melting device is mounted, the snow melting device can be removed and used as a traveling vehicle having a loading platform.

[0023] According to the configuration of claim 6, the side plates prevent snow from spilling from the left and right sides at the front of the guide path.

Brief Description of the Drawings

[0024] [Figure 1] It is a front view of a rotary snow removal vehicle during snow removal operation showing Example 1 of the present invention. [Figure 2] Same as above, it is a side view of the rotary snow removal vehicle. [Figure 3] Same as above, it is a plan view of the rotary snow removal vehicle. [Figure 4] Same as above, it is a front view of the rotary snow removal vehicle during transportation. [Figure 5] Same as above, it is a side view. [Figure 6] Same as above, it is a plan view. [Figure 7] Same as above, it is a front view of the traveling vehicle. [Figure 8] Same as above, it is a side view. [Figure 9] Same as above, it is a plan view. [Figure 10] Same as above, it is a rear view. [Figure 11] Same as above, it is a side view of the main part of the rotary snow removal vehicle. [Figure 12] Same as above, it is a front view of the main part of the auger device. [Figure 13] The same as above, this is a plan view of the main part of the auger device. [Figure 14] The same as above, this is a side view of the main part of the auger device. [Figure 15] The same as above, a side view of the slider device. [Figure 16] The same as above, a plan view of the slider device. [Figure 17] The same as above, this is a front view of the main part of the slider device. [Figure 18] The same as above, this is a rear view of the main part of the slider device. [Figure 19] The same as above, this is a block diagram of the power unit. [Figure 20] The above is a block diagram of the snow melting system. [Modes for carrying out the invention]

[0025] Hereinafter, Embodiment 1 of the present invention will be described with reference to Figures 1 to 20. As shown in the figures, the rotary snowplow (hereinafter referred to as the snowplow) 1 comprises a road vehicle 2 and a snow removal device 3 that is detachably mounted in front of the road vehicle 2. The snow removal device body 4 of the snow removal device 3 mainly consists of a snow-collecting auger device 5 provided along the left-right direction (vehicle width direction) and a snow removal device 6 provided between the auger device 5 and the road vehicle 2 and equipped with a blower 43 that discharges the snow collected by the auger device 5 in a predetermined direction. The snow removal device 3 also comprises a snow removal device body 4 and a mounting device 7 that detachably mounts the snow removal device body 4 in front of the road vehicle 2 and raises and lowers the snow removal device body 4, and this mounting device 7 constitutes a part of the snow removal device 3.

[0026] The auger device 5 comprises an auger 8 and a casing 9 that covers the auger 8, and the auger 8 is rotatably supported between the left and right auger support members 10, 10 of the snow removal device body 4. In order to remove snow from the wall surface of the road shoulder, the width of the auger device 5 in the vehicle width direction is formed to be approximately 1 / 2 to 2 / 3 of the width of the traveling vehicle 2.

[0027] As shown in Figure 11 and other figures, a vehicle-side mounting body 12 is provided at the front lower part of the vehicle body 11 of the traveling vehicle 2 for detachably attaching the mounting device 7 of the snow removal device 3. This vehicle-side mounting body 12 comprises a pair of left and right mounting brackets 13, 13 fixed to the vehicle body 11, and a left-right connecting rod 14 (Figure 6) connecting these left and right mounting brackets 13, 13. The upper parts of the left and right mounting brackets 13, 13 are fixed to the vehicle body 11, and the lower parts of the left and right mounting brackets 13, 13 and the vehicle body 11 are fixed by front-rear stays 15, 15. The traveling vehicle 2 also has a cargo bed 17 at the rear of the driver's cab 16.

[0028] Furthermore, the vehicle 2 has left and right front wheels 18, 18 and left and right rear wheels 19, 19, 19, 19 arranged front to back, and driving force is transmitted to these front and rear wheels 18, 18, 19, 19, 19, 19, respectively.

[0029] As shown in Figure 11 and other figures, the mounting device 7, which constitutes a part of the snow removal device 3, includes a snow removal side mounting body 21 that is detachably attached to the vehicle side mounting body 12. By removing the snow removal side mounting body 21 from the vehicle side mounting body 12, the snow removal device 3 can be removed from the vehicle body 11.

[0030] The snow removal side mounting body 21 integrally comprises a pair of upper and lower guide rods 22, 22 (Figure 1) that run in the left-right direction, left and right vertical frame members 23, 23 (Figure 4) to which both ends of these guide rods 22, 22 are fixed, and left and right horizontal frame members 24, 24 (Figure 1) that connect these left and right vertical frame members 23, 23. The snow removal side mounting body 21 is detachably connected to the front surfaces of the left and right mounting brackets 13, 13 by attachment and detachment means 25 (Figure 11) such as bolts and nuts.

[0031] The mounting device 7 includes a movable frame 26, which is a movable body, provided on the snow removal side mounting body 21 so as to be movable in the left-right direction (vehicle width direction). On the top, bottom, left, and right sides of this movable frame 26 are cylindrical sliders 27, 27 (Figures 1 and 4) that are movably fitted onto the top and bottom guide rods 22, 22. Furthermore, the base end of a hydraulic cylinder 28 (Figure 1), which is a means of movement, is connected to the left vertical frame member 23, and the tip of the telescopic rod (not shown) of the hydraulic cylinder 28 is connected to the snow removal side mounting body 21, so that the movable frame 26 moves left and right by the extension and retraction of the hydraulic cylinder 28. As shown in Figures 3 and 4, the movable frame 26 is formed so as to fit within the vehicle width of the traveling vehicle 2, and when the movable frame 26 is moved to the left side, which is one side in the vehicle width direction, the left edge of the auger 8 is positioned outside the vehicle width.

[0032] As shown in Figure 11, the snow removal device body 4 is supported by the snow removal side mounting body 21 via the lifting link mechanism 31 of the mounting device 7. The lifting link mechanism 31 constitutes part of the snow removal device 3. The link mechanism 31 has upper and lower link pieces 32 and 33 on the left and right sides that form a nearly parallel link. The rear end of the upper link piece 32 is rotatably connected to the movable frame 26 by a pivot part 32K, and the front end of the upper link piece 32 is rotatably connected to the snow removal device body 4 by a pivot part 32Z. The rear end of the lower link piece 33 is rotatably connected to the movable frame 26 by a pivot part 33K, and the front end of the lower link piece 33 is rotatably connected to the snow removal device body 4 by a pivot part 33Z. Furthermore, the lower ends of the left and right lifting cylinders 34, 34 are rotatably connected to the movable frame 26 by the pivot 34K near the pivot 33K, and the upper ends of the telescopic rods 34S, 34S (Figure 5) of the left and right lifting cylinders 34, 34 are rotatably connected to the snow removal device body 4 by the pivot 32Z.

[0033] Therefore, as shown in Figures 1 and 11, when the lifting cylinder 34 is retracted, the snow removal device body 4 lowers to the snow removal position, and as shown in Figure 5, when the lifting cylinder 34 is extended, the auger device 5 rises, and the snow removal vehicle 1 can be switched to a non-snow removal state (deadheading state) and driven.

[0034] As shown in Figure 12 and other figures, the auger 8 has a helical ribbon-shaped blade 42 attached to a rotating shaft 41, and the blades are arranged symmetrically with respect to the axial center. That is, the twist direction of the blade 42 of the auger 8 is in opposite directions. When the auger 8 is rotated in the forward direction, the snow on the road 55 is transported to the center of the auger 8, and the snow transported to the center of the auger 8 is blown out along with air from the chute 44 to the rear of the snowplow 1 by the blower 43 (Figure 4) of the snow removal device 6. The blower 43 and chute 44 are provided in the snow removal device 3, with the blower 43 located in the snow removal device 6 at the rear of the auger 8, and the chute 44 located above the snow removal device 6 (Figure 2).

[0035] As shown in Figure 2, the chute 44 is divided into multiple cylindrical bodies 45 and is configured to be extendable and retractable. In this example, it is divided into three sections, and extension and retraction cylinders 46, 46 are provided between the multiple adjacent cylindrical bodies 45, 45, 45. The chute 44 extends and retracts as these extension and retraction cylinders 46, 46 extend and retract. In addition, a snow discharge pipe 47 is provided at the tip of the cylindrical body 45 at the end of the chute 44 so as to be tiltable about a horizontal axis. The snow discharge pipe 47 tilts as a tilting cylinder 48 provided between the tip cylindrical body 45 and the snow discharge pipe 47 extends, allowing snow to be discharged towards the rear in a constricted state.

[0036] Furthermore, the chute 44 is provided to be rotatable and tiltable by a drive mechanism (not shown), and by retracting the telescopic cylinder 46 and tilting the tip to one side in the vehicle width direction, the chute 44 can be stored within the vehicle width as shown in Figures 4 and 5.

[0037] The casing 9 of the auger device 5 has a front opening 51 on its front surface, and the auger support member 10 is positioned in the opening on the other side (right side) in the width direction. As shown in Figure 14, one side (left side) of the casing 9 in the width direction is closed by a front-to-back side plate portion 52, the lower edge portion 52S of this side plate portion 52 is positioned away from the road surface of the road 55 at the snow removal position of the snow removal device 3, and the front edge portion 52M of the side plate portion 52 is positioned slightly in front of the front opening 51 of the casing 9 (Figure 14).

[0038] As shown in Figure 12, a wall-like parapet 56 is provided on the shoulder of the road 55. The wall surface 57 of this parapet 56 rises from the road 55 and has a lower inclined wall surface 57S below an upper inclined wall surface 57U, with a different angle of verticality, where the angle of the lower inclined wall surface 57S is greater than that of the upper inclined wall surface 57U. Thus, the wall surface 57 has upper and lower inclined wall surfaces 57U and 57S that are located outward from the lower end surface 57K of the wall surface 57. Furthermore, a bend 58 is provided between the upper and lower inclined wall surfaces 57U and 57S where the inclination angle changes, and a bend 58A is provided between the lower inclined wall surface 57U and the lower end surface 57K. The parapet 56 is made of concrete or the like, and the wall surface 57 is a concrete surface.

[0039] The snow removal device 3 has a brush means 61 which is a snow removal tool for removing snow adhering to the wall surface 57 of the road shoulder. This brush means 61 is provided with a support 63 that is narrower than the mounting member 62 on the front side of a vertical plate-shaped mounting member 62, the base ends of a plurality of bristles 64 are attached to this support 63, a plurality of lateral bristles 64 are arranged in a row vertically without gaps, the base ends of the plurality of bristles 64 are arranged in a front-to-back direction and bundled together, and these base ends are planted on the front side of the support 63, so that the tip side of the bristles 64 is slightly flared, as shown in Figure 13. The bristles 64 are rod-shaped made of synthetic resin with a circular cross-section and a diameter of, for example, about 3 mm.

[0040] Then, the support 63 is positioned at the front edge 52A with the support facing forward, and the mounting member 62 is detachably attached to the tip side of the outer surface of the side plate 52 by mounting means 65 such as bolts and nuts. As a result, the bristles 64 are positioned at the front edge 62M and on the outer surface of the side plate 52, with the bristles 64 protruding outward in the width direction. Therefore, when removing snow from a wall surface 57 of a different shape, the corresponding brush means 61 can be used, and the brush means 61 can also be replaced in case of wear or other issues. Furthermore, when attached to the auger device 5, the bristles 64 are positioned at the front of the front opening 51. The upper bristles 64 are positioned above the lateral upper edge 51F (Figure 12) of the front opening 51, and the lower bristles 64 are positioned at the height of the lower edge 52S.

[0041] As shown in Figure 12, in the installed state, the tips 64S of the bristles 64 are aligned to correspond to the shape of the wall surface 57, and the imaginary line connecting the tips 64S forms a shape corresponding to the upper and lower inclined wall surfaces 57U, 57S and the bent portion 58. For this reason, the length of the bristles 64 is set to correspond to the wall surface 57 depending on its height. In this way, even if the distance from the vehicle body 11 to the wall surface 57 differs depending on the height, the tips of the bristles 64 make even contact with the wall surface 57, so that the accumulated snow can be scraped off uniformly.

[0042] Furthermore, the other side of the casing 9 in the width direction is closed by the side plate portion 52, and the front edge portion 52M of the side plate portion 52 is located slightly forward of the upper edge 51F of the front opening 51 of the casing 9. The bristles 64 are provided at the position of the front edge portion 52M by providing the support 63 on the front edge portion 52M, and the bristles 64 are located in front of the front opening 51 by a distance K. As a result, the snow scraped off by the brush means 61 is sent to the front opening 51 and sent to the auger 8 without leaking out in the width direction of the vehicle by the side plate portion 52. Note that, as shown in Figures 13 and 14, the front edge of the mounting member 62 of the brush means 61 is aligned with the position of the front edge portion 52M. However, if the mounting member 62 is attached to the outer surface of the side plate portion 52 so that the front edge of the mounting member 62 is in front of the front edge portion 52M, then the front edge of the mounting member 62 becomes the front edge portion 52M of the side plate portion 52.

[0043] Furthermore, as shown in Figure 11, the snow removal device 3 is provided with sleds 69, 69 on the left and right sides behind the auger 8. These sleds 69, 69 support the snow removal device 3 by contacting the road surface during snow removal work, and also restrict the vertical orientation of the snow removal device body 4. The base end 69A of each sled 69 is fixed to the snow removal device body 4, and the sled body 69B is fixed to the base end 69A in a height-adjustable manner.

[0044] A power unit 71 is mounted on the front of the cargo bed 17 of the vehicle 2. This power unit 71, as shown in Figure 19, houses a hydraulic control device 73, a hydraulic pump 74 controlled by the hydraulic control device 73, a prime mover 75 or battery that powers the hydraulic pump 74, and a fuel tank 76 for storing fuel for the prime mover 75, within a roughly rectangular parallelepiped housing 72 that is long in the width direction of the vehicle. As a result, the snow removal device 3 is driven using the power unit 71 as the power source, without using the rotational force of the vehicle 2's engine (not shown) as the power source. If the power source is a battery, the fuel tank is not required.

[0045] By equipping the snow removal device 3 with a dedicated power unit 71 in this way, the snow removal device 3 can perform stable snow removal work regardless of fluctuations in engine load such as snow removal resistance during driving.

[0046] A snow melting device 81 is detachably mounted on the rear of the cargo bed 17. This snow melting device 81 has a roughly rectangular housing 82 that is long in the front-to-back direction. A snow input port 83 is provided on the front upper surface of the housing 82, and inside the housing 82 there is a melting water tank 84 into which the snow introduced into the input port 83 falls, a heating means 85 such as a boiler, and a pump shower 86 which is a water spraying means that sprays the heated water heated by the heating means 85 into the melting water tank 84. In the figure, 86A is a nozzle provided in multiple places on the pump shower 86, and heated water is sprayed from these nozzles 86A. The snow melting device 81 also has a drain port 87 for draining the water from the melting water tank 84 to the outside of the snowplow 1. The snow melting device 81 is also equipped with a generator 88 that serves as a power source, and this generator 88 is located outside the housing 82.

[0047] The system includes a slider device 90, which is a transfer device that sends the snow discharged from the chute 44 to the snow melting device 81, and this slider device 90 is detachably mounted on the traveling vehicle 2. As shown in Figures 15 to 18, the retractable guide path 91 of the slider device 90 includes a trough-shaped rear guide path 92 with an open top and a trough-shaped front guide path 93 that is slidably inserted into the rear guide path 92. The rear guide path 92 has a bottom surface 94 which is an open top and slopes down which snow flows, and side surfaces 95, 95 provided on both sides in the width direction of the bottom surface 94, with an upper opening 92K provided between the upper parts of the left and right side surfaces 95, 95. Furthermore, the front guideway 93 has an open top and a bottom surface 94A which is a slope from which snow flows down, and side surfaces 95A, 95A provided on both sides in the width direction of the bottom surface 94A, with an upper opening 93K provided between the upper parts of the left and right side surfaces 95A, 95A.

[0048] Between the upper edges 95F, 95F of the left and right side portions 95, 95 of the rear guide passage 92, multiple crossbeam members 96, 96, which are shape-retaining members, are fixed to the upper edges 95F, 95F of those left and right sides, and the crossbeam members 96, 96 are provided on the front and rear sides. Similarly, between the upper edges 95F, 95F of the left and right side portions 95A, 95A of the front guide passage 93, multiple crossbeam members 97, 98, 98, which are shape-retaining members, are fixed to the upper edges 95F, 95F of those left and right sides, and the crossbeam members 97, 98, 98 are provided on the front, central, and rear sides.

[0049] The rear guide passage 92 is provided with a sliding mechanism 100 that allows the front guide passage 93 to slide. The sliding mechanism 100 has mounting arms 101, 101 protruding from the outer surfaces of the left and right side portions 95A, 95A on the front side of the front guide passage 93, and the tips of the left and right guide rods 102, 102 are fixed to the tips of these left and right mounting arms 101, 101, and these guide rods 102, 102 are arranged parallel to the guide passage 91. The sliding mechanism 100 also has left and right sliders 103, 103, 103A, 103A arranged front to back on the outer surfaces of the left and right side portions 95, 95 on the front side of the rear guide passage 92, and the left and right guide rods 102, 102 are slidably inserted through these sliders 103, 103, 103A, 103A.

[0050] Furthermore, a hydraulic cylinder 105, which serves as an extension / retraction drive means, is positioned on the outside of one side portion 95, 95A of the guide path 91. The tip of the extension / retraction rod 105S of the hydraulic cylinder 105, which is a fluid pressure cylinder, is attached to the outer surface of the side portion 95A by a mounting portion 106, and the base end of the hydraulic cylinder 105 is attached to the outer surface of the side portion 95 by a mounting portion 107. Therefore, when the hydraulic cylinder 105 is extended, the guide rods 102, 102 provided on the left and right sides of the front guide path 93 are guided by the sliders 103, 103, 103A, 103A provided in pairs on the left and right sides of the rear guide path 92, so that the front guide path 93 slides stably back and forth, and the guide path 91 can be extended and retracted.

[0051] The front of the front guide passage 93 is a cylindrical snow inlet 111, and a snow inlet enlargement device 112 is provided to enlarge this snow inlet 111. The enlargement device 112 comprises a snow inlet enlargement member 113 and a hydraulic cylinder 114 which is an opening and closing drive means for tilting the snow inlet enlargement member 113, and this hydraulic cylinder 114 is a fluid pressure cylinder.

[0052] The snow inlet enlargement member 113 integrally comprises a flat upper plate portion 115 and side plate portions 116, 116 that are vertically extended downward from the left and right edges of the upper plate portion 115. The upper plate portion 115 has a width corresponding to the distance between the inner surfaces of the left and right side portions 95A, 95A, and the side plate portions 116 are roughly triangular in side view, and as shown in Figure 17, the left and right side plate portions 116, 116 are configured to be insertable into the left and right side portions 95A, 95A. The side plate portion 116 has a shape in which the lower edge 116S of the side plate portion 116 and the upper plate portion 115 taper towards the front edge 116M of the side plate portion 116. The upper surface of the upper plate portion 115 is provided with multiple (4 locations) strip-shaped vertical rib portions 117 that are equally spaced in the left-right direction and have their width in the vertical direction.

[0053] Figure 15 shows the state in which the snow input opening enlargement member 113 is open and the snow input opening 111 is enlarged. In this open state, the lower edge 116S is below the upper edge 95F of the side portion 95A and is approximately parallel to the upper edge 95F. Also, as shown in Figure 17, when the enlargement member 113 is closed (Figure 17), the upper plate portion 115 is at approximately the same height as the left and right upper edges 95F, 95F, and the upper plate portion 115 is approximately parallel to the bottom portion 94A.

[0054] A left-right rotating shaft 121 is fixed to the rear edge of the upper plate portion 115, and both ends of this rotating shaft 121 are rotatably attached to rotating support portions 122, 122 that protrude from the upper edges 95F, 95F of the left and right side portions 95A, 95A.

[0055] Furthermore, as shown in Figure 16, the upper end of the link piece 123 is fixed to the left-right center of the rotating shaft 121, the tip of the telescopic rod 114S (Figure 15) of the hydraulic cylinder 114 is rotatably connected to the lower end of the link piece 123 by a pivot 124, and the base end of the hydraulic cylinder 114 is rotatably connected to the crossbeam member 97 by a pivot 125.

[0056] Therefore, when the hydraulic cylinder 114 is extended, the front side of the expansion member 113 rotates upward, causing the expansion member 113 to open and the snow input port 111 to enlarge. Conversely, when the hydraulic cylinder 114 is retracted, the expansion member 113 closes in the opposite direction. In the enlarged state, when the snow input port 111 is enlarged, the left and right side portions 95A, 95A of the front guide passage 93 and the left and right side plates 116, 116 of the expansion member 113 are continuous with virtually no gaps, preventing the input snow from leaking to the outside. Furthermore, if the entire length of the front guide passage 93 were formed in a cylindrical shape, dealing with snow clogging would be complicated. However, since only the front side of the front guide passage 93 is cylindrical due to the expansion member 113, the structure is less prone to snow clogging.

[0057] The slider device 90 is detachably attached to the upper surface 72J of the housing 72 of the power unit 71, and the rear side of the bottom surface 94 of the rear guide path 92 is attached to the upper surface 72J by a pivot mounting portion 131. The pivot mounting portion 131 has a base portion 132 that is detachably attached to the upper surface 72J by a means of attachment and detachment such as bolts and nuts (not shown), and a pair of left and right mounting pieces 133, 133 are provided protruding from the base portion 132 as shown in Figure 18, and these left and right mounting pieces 133, 133 are rotatably connected to connecting portions 134, 134 protruding from the lower surface of the bottom surface 94 by pivot portions 135, 135. Alternatively, the base portion 132 may be fixed to the upper surface 72J, and the connecting portions 134 may be detached from the mounting pieces 133 by the pivot portion 135.

[0058] Furthermore, the front side of the bottom surface 94 is connected to the upper surface 72J by a hydraulic cylinder 136 which is a tilting mechanism. For this purpose, the base portion 132A is detachably attached to the upper surface 72J by a means of attachment and detachment such as bolts and nuts (not shown), and a pair of left and right mounting pieces 133A, 133A are provided protruding from the base portion 132A, and these left and right mounting pieces 133A, 133A are rotatably connected to the lower ends of a pair of left and right hydraulic cylinders 136, 136 by pivot portions 135A, 135A, and the tips of the telescopic rods 136S, 136S of the hydraulic cylinders 136, 136 are rotatably connected to connecting portions 134B, 134B protruding from the lower surface of the bottom surface 94 by pivot portions 135B, 135B. Alternatively, the base portion 132 may be fixed to the upper surface 72J, and the rear guide path 92 may be detachably attached to the upper surface 72J by the pivot portion 135A or the pivot portion 135A.

[0059] Furthermore, as shown in Figures 1 and 3, with the left side of the auger device 5 positioned outward from the vehicle width, the guide path 91 is mounted diagonally with respect to the vehicle's front-rear direction in a plan view, such that the snow inlet 111 of the guide path 91 is located behind the snow discharge pipe 47 of the chute 44, and the snow discharge port 92H at the rear end of the rear guide path 92 is located at the inlet 83 of the snow melting device 81.

[0060] Then, when storing the snowplow, as shown in Figure 5, the front guide path 93 is retracted and stored in the rear guide path 92, thereby contracting the guide path 91, and the hydraulic cylinder 114 is driven so that the guide path 91 becomes horizontal. In this way, the height dimension of the guide path 91, which is the highest point of the snowplow 1, can be minimized, and the snowplow is driven to the snow removal site in this transport state. The snowplow 1 is also returned to its storage location after the snow removal work is completed, and is returned to this transport state.

[0061] Furthermore, in the transport state, as shown in Figure 5, the chute 44 is retracted by the telescopic cylinder 46, the tip is tilted to one side in the vehicle width direction, and the chute 44 is put into a stored state, and the snow removal device 3 is raised to the raised position. Furthermore, as shown in Figures 4 and 6, the hydraulic cylinder 28, which is the means of moving the snow removal device 3, is extended to position the snow removal device 3 approximately in the center of the vehicle width so that it fits within the vehicle width.

[0062] When the snowplow 1 is driven to the snow removal site in a non-passenger state and snow removal work is to be performed, as shown in Figure 2, the chute 44 is raised and extended, the snow discharge pipe 47 is positioned facing backward, and the snow removal device body 4 is lowered to the snow removal position. Also, as shown in Figures 1 and 3, the slider device 90 extends the hydraulic cylinder 136, rotates the guide path 91 to make it diagonal so that the front side is slightly higher, then extends the hydraulic cylinder 105, slides the front guide path 93 forward to extend the guide path 91, and aligns the snow input port 111 at the front end of the guide path 91 with the position of the snow discharge pipe 47 of the chute 44.

[0063] Furthermore, by extending the hydraulic cylinder 114 of the snow input port enlargement device 112 to enlarge the snow input port 111 as shown in Figure 15, the snow discharged from the snow discharge pipe 47 of the chute 44 along with the airflow can be sent to the guide path 91 without spilling.

[0064] Furthermore, by extending and retracting the hydraulic cylinder 28, as shown in Figures 1 and 3, the left edge of the auger device 5 is positioned outside the width of the vehicle, and the tip of the bristles 64 of the brush means 61 is aligned with the wall surface 57.

[0065] Then, the power unit 71 is used as the power source to drive the snow removal device 3. In this way, by not using the engine of the vehicle 2 as the power source, and instead equipping it with a power source specifically for snow removal, stable snow removal work can be performed without being affected by output fluctuations caused by changes in engine speed due to driving resistance.

[0066] When the snowplow 1 moves forward to clear snow, the auger 8, which partially extends outward from the width of the vehicle, can take in and remove snow near the wall railing 56. At the same time, the brush mechanism 61 scrapes off snow adhering to the wall surface 57 that the auger 8 cannot reach. Since the brush mechanism 61 is located in front of the rotation axis 41 of the auger 8, the scraped-off snow is taken into the casing 9.

[0067] Furthermore, since the brush means 61 is detachably attached to the snow removal device 3, when removing snow adhering to a different wall surface 57, the brush means 61 having a shape corresponding to that wall surface 57 can be replaced to perform snow removal.

[0068] The snow collected in the center by the auger 8 is sent into the chute 44 by the blower 43, discharged from the snow removal pipe 47, fed into the snow input port 111 of the slider device 90, slides down the inclined bottom surfaces 94A, 94 of the guide path 91, and falls into the meltwater tank 84 through the snow discharge port 92H and the input port 83 of the snow melting device 81.

[0069] In this case, the snow is blown out of the snow discharge pipe 47 by the blower 43 and enters the snow input port 111, where it slides along the slanted guide path 91. Therefore, no power is required to send the snow to the slider device 90, and the blown-out snow can be sent to the snow melting device 81 without disrupting its flow.

[0070] The snow sent to the snow melting device 81 is melted by a shower of heated water in the melting water tank 84 and discharged as water from the drain outlet 87. This allows snow to be disposed of even in places where there is no place to dispose of the removed snow, without the need to load the snow onto transport vehicles or perform other such tasks.

[0071] Next, the method of using the snowplow 1 vehicle 2 outside of the snowy season will be explained. The snowplow device 3 is removed from the mounting brackets 13, 13 provided on the vehicle body 11 by the attachment / detachment means 25. After removal, as shown in Figures 7 to 9, the bumper 141 is attached to the left and right mounting brackets 13, 13 by the attachment / detachment means 25. In this case, as shown in Figure 9, mounting members 142, 142 in the front-rear direction are integrally provided on the left and right rear surfaces of the bumper 141, and the rear parts of these mounting members 142, 142 are detachably attached to the mounting brackets 13, 13 by the attachment / detachment means 25. Note that the bumper 141 may also be detachably attached to the vehicle body 11 by an attachment / detachment means other than the attachment / detachment means 25.

[0072] Furthermore, the slider device 90 is removed from the vehicle 2 by detaching the base portions 132 and 132A from the upper surface 72J of the power unit 71. In addition, the snow melting device 81, which was attached to the cargo bed 17 by a detachable means (not shown), is removed from the vehicle 2 by the same detachable means.

[0073] In this way, the device is removed, and as shown in Figures 8 and 9, the space for the cargo bed 17 is secured, allowing the vehicle 2 to be used as a transport vehicle that utilizes the cargo bed 17. In this example, since the power unit 71 remains mounted on the vehicle 2, it is possible to transport goods to a site where power is needed and to supply power at that site.

[0074] Thus, in this embodiment, corresponding to claim 1, a rotary snowplow 1 is provided, comprising a traveling vehicle 2 and a snow removal device 3 provided in front of the traveling vehicle 2 and having an auger 8 for collecting snow, wherein the snow removal device 3 is provided so as to be movable in the width direction of the traveling vehicle 2, and a hydraulic cylinder 28 is provided as a means of moving the snow removal device 3 in the width direction. The snow removal device 3 is equipped with a snow removal device 6 that discharges the collected snow to the rear from the chute 44, and a slider device 90 which is a transfer device that sends the snow discharged from the chute 44 to the rear of the traveling vehicle 2, and the slider device 90 which is a transfer device comprises an inclined guide path 91 on which the snow slides down, and a snow input opening enlargement device 112 that enlarges the snow input opening 111 on the front side of the guide path 91, and the guide path 91 comprises a bottom surface 94A on which the snow slides down, and left and right side surfaces provided on both sides in the width direction of the bottom surface 94A The snow inlet expansion device 112 has two sides 95A, 95A and an open top, and comprises a snow inlet expansion member 113 and a hydraulic cylinder 114 which is an opening / closing drive means for opening and closing the snow inlet expansion member 113, and the rear of the snow inlet expansion member 113 is rotatably attached to the upper edge side of the guide path 91 side portion 95A, and the snow inlet expansion member 113 opens so that the front side moves away from the bottom portion 94A with the rear as the pivot point, and closes so as to follow the upper edges of the left and right side portions 95A, 95A. Therefore, by moving the snow removal device 3 towards the shoulder of the road using the hydraulic cylinder 28, the snow on the shoulder side outside the width of the vehicle can be collected and removed by the auger 8.

[0075] Thus, in this embodiment, corresponding to claim 2, a brush means 61 for removing snow adhering to the road shoulder wall surface 57 is provided on the left side, which is one side in the width direction of the snow removal device 3. Therefore, snow adhering to the road shoulder wall surface 57 can be scraped off with the brush means 61 and removed.

[0076] Thus, in this embodiment, corresponding to claim 3, the brush means 61 has bristles 64 that protrude laterally arranged in a vertical direction, and the arrangement of the tips 64S of these bristles 64 corresponds to the shape of the wall surface 57. As a result, the tips 64S of the bristles 64 make even contact with the wall surface 57 of the road shoulder, and the attached snow can be uniformly scraped off by the brush means 61.

[0077] Also, Thus, in this embodiment, Claim 1 In response to this, the snow removal device 3 is equipped with a snow removal device 6 that discharges the collected snow to the rear from the chute 44, and a slider device 90 that is a transfer device that sends the snow discharged from the chute 44 to the rear of the traveling vehicle 2. Thus, the snow discharged from the chute 44 can be sent to the snow melting device 81 by the slider device 90.

[0078] Thus, in this embodiment, Claim 4 Corresponding to , Since the vehicle is equipped with a slider device 90, which is a transfer device that sends the snow discharged from the chute 44 to the snow melting device 81 mounted on the cargo bed 17 of the vehicle 2, the snow discharged from the chute 44 can be sent to the snow melting device 81 by the slider device 90.

[0079] Also, Thus, in this embodiment, Claim 1 Accordingly, the slider device 90, which is a transfer device, is equipped with an inclined guide path 91 through which the snow slides down, and a snow input opening enlargement device 112 that enlarges the snow input opening 111 in front of the guide path 91. As a result, the slider device 90 can send snow to the snow melting device 81 for melting without using power for transfer, and moreover, the enlargement of the snow input opening 111 prevents snow from spilling out of the chute 44.

[0080] Also,Thus, in this embodiment, Claim 1 Accordingly, the guide path 91 has a bottom surface 94A on which snow slides off, and side surfaces 95A, 95A provided on both sides in the width direction of the bottom surface 94A, and its top is open. The snow input port enlargement device 112 includes a snow input port enlargement member 113 and a hydraulic cylinder 114 which is an opening / closing drive means for opening and closing the snow input port enlargement member 113. The snow input port enlargement member 113 is opened and closed by the hydraulic cylinder 114, enlarging the snow input port 111. Furthermore, although dealing with snow clogging would be complicated, the snow input port enlargement member 113 is provided on the front side of the guide path 91, and the top of the other side is open, making it difficult for snow to clog.

[0081] Thus, in this embodiment, Claim 5 To address this, the snow removal device 3 is detachably mounted on the vehicle 2. Therefore, when snow removal is not required, the snow removal device 3 can be removed, and if the snow melting device 81 is installed, the snow melting device 81 can be removed, allowing the vehicle 2 to be used as a vehicle with a cargo bed 17.

[0082] Thus, in this embodiment, corresponding to claim 6, the snow input opening enlargement member 113 has an upper plate portion 115 and left and right side plate portions 116, 116 that are suspended downward from the left and right edges of the upper plate portion 115. These left and right side plate portions 116, 116 are close to the inner surfaces of the left and right side portions 95A, 95A on the front side of the guide passage 91 and can be inserted into the left and right side portions 95A, 95A. The side plate portions 116 are configured to close the gap between the upper plate portion 115 and the upper edge of the side portions 95A when the snow input opening enlargement member 113 is opened. As a result, when the snow input opening enlargement member 113 is open, the side portions 95A and the side plate portions 116 are continuous, and snow does not spill from the left or right on the front side of the front guide passage 93.

[0083] The following are some of the effects of the embodiment: The width of the auger device 5 in the vehicle width direction is approximately 1 / 2 to 2 / 3 of the vehicle width of the traveling vehicle 2, and is narrower than a normal auger device, making it suitable for snow removal on the road shoulder. In addition, the snow removal side mounting body 21 is equipped with a pair of upper and lower guide rods 22, 22 in the left and right directions, and multiple sliders 27 provided on the movable frame 26 are slidably mounted on these guide rods 22, 22, so that the movable frame 26, to which the load of the snow removal device body 4 is applied, can be stably slid in the vehicle width direction. Furthermore, since a lifting link mechanism 31 is provided between the snow removal device body 4 and the movable frame 26, the snow removal device body 4 and the lifting link mechanism 31 together with the movable frame 26 can be attached to and removed from the vehicle body 11.

[0084] Furthermore, when the movable frame 26 is moved to the left side, which is one side in the vehicle width direction, the left edge of the auger 8 is positioned outside the vehicle width, so it is possible to collect and remove snow on the outside of the vehicle width, which was not possible with conventional augers. In addition, the brush means 61 has multiple bristles 64 with their base ends arranged in the front-to-back direction and bundled together, and these base ends are planted in the support 63, so that the snow that has accumulated can be efficiently scraped off by the multiple bristles 64 arranged in the front-to-back direction. Also, the wall surface 57 has a bend 58 in between and has upper and lower inclined wall surfaces 57U and 57S with different inclination angles, and these upper and lower inclined wall surfaces 57U and 57S are flat surfaces, and the tips 64S of the bristles 64 are arranged in the same shape as the wall surface 57, so that the tips 64S of the bristles 64 make even contact with the wall surface 57 which has upper and lower inclined wall surfaces 57U and 57S with different inclination angles, and the snow that has accumulated can be scraped off uniformly. Furthermore, since the brush means 61 is detachably attached to the snow removal device 3 by the mounting means 65, when removing snow from a wall surface 57 of a different shape, the brush means 61 can be replaced with one that corresponds to the shape of the wall surface 57, and the brush means 61 can also be replaced in case of wear or other issues.

[0085] Furthermore, the other side of the casing 9 in the width direction is closed by the side plate portion 52, and the front edge portion 52M and the bristles 64 of the side plate portion 52 are located in front of the front opening 51 of the casing 9, in front of the rotation axis 41 of the auger 8, and behind the front end of the auger 8 in the vehicle's longitudinal direction, and the bristles 64 are located on the front edge portion 52M, so that the snow scraped off by the brushing means 61 is sent to the front opening 51 and sent to the auger 8 without leaking out in the vehicle's width direction by the side plate portion 52.

[0086] Furthermore, the snow removal device 3 is equipped with a power unit 71, which is a drive device. Since this power unit 71 is driven by a different power source than the engine that powers the front wheels 18 and rear wheels 19, which are the means of travel for the vehicle 2, the power unit 71 can perform stable snow removal work regardless of fluctuations in load such as snow removal resistance when the vehicle is in motion.

[0087] Furthermore, the vehicle is equipped with a slider device 90, which is a transfer device that sends the snow discharged from the chute 44 to the snow melting device 81. Since the slider device 90 is detachably mounted on the vehicle 2, it can be removed when not snow removal season, and the vehicle 2 can be used as a transport vehicle. Also, since the slider device 90 is detachably mounted on the upper surface 72J of the power unit 71 installed on the cargo bed 17, there is no need to provide a dedicated frame for the slider device 90 on the cargo bed 17. In addition, the guide path 91, which has an open top, is provided with crossbeam members 96, 97, and 98 on its upper edges 95F, 95F, so that the guide path 91 can maintain its shape. Furthermore, the vehicle is equipped with a sliding mechanism 100 that allows the front guide path 93 to slide along the rear guide path 92. Since the sliding mechanism 100 has left and right guide rods 102, 102, the front guide path 93 can slide smoothly along the rear guide path 92. Furthermore, since the guide path 91 is retractable, it can be compactly stored when the vehicle is being moved.

[0088] Furthermore, the guide path 91 has bottom portions 94, 94A from which snow slides off, side portions 95, 95, 95A, 95A provided on both sides in the width direction of the bottom portions 94, 94A, and an upper opening 93K, with the top open. The snow input opening enlargement device 112 comprises a snow input opening enlargement member 113 and a hydraulic cylinder 114 which is an opening and closing drive means for opening and closing the snow input opening enlargement member 113. The snow input opening enlargement member 113 has an upper plate portion 115 and left and right side plate portions 116, 116 that are suspended downward from the left and right edges of the upper plate portion 115. These left and right side plate portions 116, 116 are close to the inner surfaces of the left and right side portions 95A, 95A on the front side of the guide path 91 and can be inserted into the left and right side portions 95A, 95A, and the rear part of the snow input opening enlargement member 113 is in the guide path The snow inlet expansion member 113 is rotatably attached to the upper edges of the side portions 95A, 95A of 91. The snow inlet expansion member 113 opens so that the front side of the upper plate portion 115 moves away from the bottom portion 94A, with the rear of the upper plate portion 115 as the center. The upper plate portion 115 closes so that it follows the upper edges 95F, 95F of the left and right side portions 95A, 95A. When the snow inlet expansion member 113 is open, the side plate portions 116, 116 close the gap between the upper plate portion 115 and the upper edges 95F, 95F of the side portions 95A, 95A. The lower parts of the side plate portions 116, 116 extend and retract between the left and right side portions 95A, 95A of the front guide passage 93. When the snow inlet expansion member 113 is open, the side portion 95A and the side plate portion 116 are continuous, so that snow does not spill from the left or right at the front of the front guide passage 93. Furthermore, by providing vertical rib portions 117 on the upper surface of the upper plate portion 115, which may come into contact with snow on its underside, deformation of the upper plate portion 115 can be prevented.

[0089] Furthermore, with the left side of the auger device 5 positioned outward from the vehicle width, the guide path 91 is mounted diagonally to the vehicle's front-rear direction in a plan view, such that the snow input port 111 of the guide path 91 is located behind the snow discharge pipe 47 of the chute 44, and the snow discharge port 92H at the rear end of the rear guide path 92 is located at the input port 83 of the snow melting device 81. Therefore, when snow is removed from one side in the vehicle width direction, the slider device 90 can send the snow to the rear snow melting device 81, eliminating the need for a device to change the orientation of the slider device 90 in plane.

[0090] Although embodiments of the present invention have been described in detail above, the present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the gist of the present invention. For example ,fruit In this embodiment, a hydraulic cylinder was used for the telescopic cylinder by mounting a power unit with a hydraulic pump on the traveling vehicle, but a fluid pressure cylinder using pneumatics or the like may be used instead of a hydraulic cylinder. Each cylinder shown in this embodiment is a telescopic drive mechanism. Furthermore, in this embodiment, the auger device of the snow removal system is configured to partially extend from within the vehicle width to the left side, which is one side in the vehicle width direction. However, the auger device may be configured to partially extend to the right side, which is the other side in the width direction. In this case, for example, snow removal from the wall of a median strip can be performed. Additionally, while the brush bristles are exemplified as having a circular cross-section, they may also have a square or polygonal cross-section. Furthermore, any type of snow melting device can be used as long as it has a heating means and melts snow into water by heat. Finally, the bent sections 58 and 58A may be curved. [Explanation of symbols]

[0091] 1. Rotary snowplow 2. Vehicles in operation 3 Snow removal equipment 8 Ogre 9 Casing 17. Cargo bed 28. Hydraulic cylinder (means of transport) 44 shots 56 Wall railing (wall structure) 57 Wall surface 57U upward slope wall 57S Downward slope wall 61 Brushing method 64 Hair body 64S tip 81 Snow melting equipment 90. Slider device (transfer device) 91 Guideway 92 Rear guideway 93 Front Guideway 94A Bottom part 95A Side part 111 Snow inlet 112 Snow input opening enlargement device 113 Snow input opening enlargement member 114 Hydraulic cylinder (opening / closing drive mechanism) 115 Upper plate section 116 Side plate part

Claims

1. A rotary snowplow comprising a vehicle and a snow removal device having an auger for collecting snow, wherein the snow removal device is provided to be movable in the width direction of the vehicle, and the vehicle is provided with a means for moving the snow removal device in the width direction. The snow removal device is equipped with a snow removal device that discharges the collected snow from a chute to the rear, and a transfer device that sends the snow discharged from the chute to the rear of the traveling vehicle. The transfer device comprises an inclined guide path for snow to slide down, and a snow input opening enlargement device that enlarges the snow input opening in front of the guide path. The guide path has a bottom surface from which snow slides down, and left and right side surfaces provided on both sides of the width direction of the bottom surface, and its top is open, and the snow input opening enlargement device comprises a snow input opening enlargement member and an opening / closing drive means for opening and closing the snow input opening enlargement member, A rotary snowplow characterized in that the rear of the snow input opening enlargement member is rotatably attached to the upper edge of the side surface of the guide path, and the snow input opening enlargement member opens from the rear so that the front side moves away from the bottom surface, and closes along the upper edges of the left and right side surfaces.

2. The rotary snowplow according to claim 1, characterized in that a brush means for removing snow adhering to the wall surface of the road shoulder is provided on one side in the width direction of the snow removal device.

3. The rotary snowplow according to claim 2, characterized in that the brush means has bristles that protrude laterally arranged in a vertical direction, and the arrangement of the tips of these bristles corresponds to the shape of the wall surface.

4. The rotary snowplow according to claim 1 or 2, further comprising the transfer device for sending the snow discharged from the chute to a snow melting device mounted on the cargo bed of the traveling vehicle.

5. The rotary snowplow according to any one of claims 1 to 3, characterized in that the snow removal device is detachably attached to the traveling vehicle.

6. The rotary snowplow according to Claim 1, wherein the snow input opening enlargement member has an upper plate portion and left and right side plate portions that are suspended downward from the left and right edges of the upper plate portion, and these left and right side plate portions are in close proximity to the inner surfaces of the left and right side portions in front of the guide path and can be inserted into the left and right side portions, and the side plate portions are configured to close the gap between the upper plate portion and the upper edge of the side portion when the snow input opening enlargement member is opened.

Images