JP2012041701A - Rotary brush type rotary snowplow - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary brush type rotary snowplow capable of reciprocating work.SOLUTION: In the rotary brush type rotary snowplow 1 including a rotary brush type rotary snow removing device 2, a turning frame 24 is rotatably provided on a vehicle 3 for a railroad truck, and forward rotary brush type rotary snow removing devices 2, 2 are respectively provided in front and at the back of the turning frame 24. Thus, snow removal of a forward path is performed by making the vehicle 3 for the truck travel in the state of turning the front and back rotary brush type rotary snow removing devices 2, 2 in an advancing direction, and after the snow removal of a prescribed section is ended, the snow removal of a return path is performed by making the vehicle 3 for the truck travel in the state of rotating a turning base 22 by rotary drive means 28 and turning the front and back rotary brush type rotary snow removing devices 2, 2 to an opposite direction, and snow is removed during the reciprocation travel of the vehicle 3 for the truck.

Description

  The present invention relates to a rotary brush type rotary snowplow suitable for removing snow on railroad tracks and the like having surface irregularities caused by sleepers, ballasts, and the like, and more particularly to a rotary brush type rotary snowplow capable of reversing the snow removal device. .

  A rotary brush type rotary snowplow is constructed by planting a large number of linear members on the outer peripheral surface of the fuselage, and the frame attached to the traveling vehicle is almost orthogonal to the traveling direction of the traveling vehicle with the axial direction of the fuselage being horizontal. A rotating brush that is rotatably supported in the circumferential direction, a rotating drive device for the brush that rotates the rotating brush so that its front side moves from the bottom to the top, and a blower that is housed in a casing having a snow throwing cylinder A blower supported by a frame at the rear part of the rotating brush, a blower rotary drive device for rotating the blower blade of the blower, and a rotating brush with the axial direction of the central axis of the blade directed in the substantially traveling direction of the traveling vehicle. Since it is configured to have a brush cover that guides the raised snow to the blower (for example, Patent Document 1), it is eliminated without leaving the snow without damaging the track and road incidental structures. Door can be.

  For this reason, damage to various underfloor equipment and train delay caused by the remaining snow can be prevented.

JP-A-6-88316

  The snow removal device for the rotary brush type rotary snow plow described above has large components and can be mounted only on one work vehicle, and therefore can perform snow removal work in only one direction. And since the vehicle body is long to work stably on the track, it is practically difficult to reverse the long vehicle body itself to remove snow in both directions, and it is necessary to install equipment such as a turntable. It was possible to remove snow only in one direction.

  Therefore, in view of the above-described problems, an object of the present invention is to provide a rotary brush type rotary snow plow capable of reciprocating work in a rotary brush type rotary snow plow that has conventionally been able to perform only one-way work.

  In order to achieve the above object, according to a first aspect of the present invention, there is provided a rotary brush type rotary snowplow provided with a rotary brush type rotary snow removal device, wherein a rotary frame is rotatably provided on a railway track vehicle, and the rotary frame is provided with the rotary frame. A lifting device for driving up and down is provided, and the rotary brush type rotary snow removal device facing one side in the front-rear direction is provided before and after the revolving frame, respectively.

  Moreover, the invention which concerns on Claim 2 is provided with the raising / lowering apparatus which raises / lowers the said turning frame, It is characterized by the above-mentioned.

  According to a third aspect of the present invention, a swivel base is rotatably provided on a railroad track vehicle, the swivel base is provided with a rotation center axis, and the swivel frame is provided on the rotation center axis so as to be rotatable and liftable. The elevating device is provided with a rotation transmitting member that moves the swivel frame up and down with respect to the swivel base, provides a rotation transmission member that transmits the rotation of the swivel base to the swivel frame, and rotates the swivel base. To do.

  Further, the invention according to claim 4 is characterized in that the rotary brush type rotary snow removal device facing one side in the front-rear direction is provided on each of the left and right sides and the other side of the vehicle before and after the turning frame.

  According to the configuration of claim 1 of the present invention, the front and rear rotary brush type rotary snow removal devices are directed in the traveling direction, the vehicle is driven to remove the snow in the forward path, and after the snow removal in the predetermined section is completed, the rotation In a state where the swivel base is rotated by the driving means and the front and rear rotary brush type snow removal devices are reversed, it is possible to remove snow on the return path by running the vehicle, and to remove snow when the vehicle reciprocates. .

  According to the configuration of claim 2 of the present invention, the rotary brush type rotary snow removal device at the use position is lifted to a turnable position by avoiding the vehicle frame etc. by the lifting device and then turned at this position. The frame can be rotated to change its orientation and lowered again to the use position.

  According to the third aspect of the present invention, the swivel frame moves up and down along the rotation center axis provided on the swivel base, the swivel base is rotated by the rotation driving means, and the rotation is transmitted by the rotation transmission member. , The revolving frame which is a heavy object provided with two rotary brush type rotary snow removal devices can be smoothly rotated.

  Moreover, according to the structure of Claim 4 of this invention, since the snow removal of the whole width direction of a vehicle can be performed with the snow removal apparatus of right and left, and the other, the width dimension of a rotating brush can be suppressed.

It is a top view which shows Example 1 of a present Example. The snow removal device is a side view of the use position. It is a side view of the state which raised / lowered the snow removal apparatus same as the above. It is a top view explaining the turning state of a turning frame same as the above. FIG. 4 is a side view of the revolving frame after turning and before lowering. FIG. 2 is a side view of FIG. It is a front view of a snow removal apparatus same as the above. It is a side view of a snow removal apparatus same as the above. It is a side view of a rotating brush same as the above. It is a side view around a rotation center axis showing Example 2 of this example. It is a side view of the principal part same as the above. It is a top view of the principal part same as the above.

  Hereinafter, Embodiment 1 of the rotary brush type rotary snowplow of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 9, the rotary brush type rotary snowplow 1 includes a rotary brush type rotary snow removal device (hereinafter referred to as a snow removal device) 2 mounted on a track vehicle 3.

  As shown in FIGS. 7 to 9, the snow removal device 2 is provided with a rotating brush 6 at the front portion of the frame 5. The rotating brush 6 is formed by implanting a wire member 6c such as a wire with an appropriate metal fitting 6d on the outer periphery of a drum (body) 6b having a rotating shaft 6a (FIG. 9) at the center. The rotating brush 6 is provided on the bearings 8 and 8 of the side plates 7 and 7 attached to the frame 5 with the rotating shaft 6a supported on the rotating plate 6. In FIG. 8, it is rotated counterclockwise. The axial directions of the rotating shaft 6a and the drum 6b of the rotating brush 6 are orthogonal to the traveling direction of the vehicle 3 in a horizontal state.

  A blower 11 is disposed above the rear portion of the rotating brush 6 and supported by the frame 5. The blower 11 is provided with a central shaft 11b at the center of a cylindrical casing 11a, and a blower blade 11c is attached to the central shaft 11b, and a snow throwing cylinder is provided on the rotation rising side (left side in FIG. 7) of the blower blade 11c in the casing 11a. 11d is provided vertically. The blower blade 11c is rotated clockwise in FIG. 7 by the hydraulic motor (rotary drive device) 12 (FIG. 8) via the speed reducer 13 and the central shaft 11b.

  The axial direction of the central axis 11b of the blower blade 11c is oriented horizontally in the traveling direction of the vehicle 3, and is orthogonal to the axial direction of the rotating shaft 6a of the rotating brush 6 in plan view. On the blower 11, a chute 14 is provided continuously with the snow throwing cylinder 11d, and a chute cap 15 is attached to the upper end of the chute 14. The chute 14 rotates left and right to change the snow throwing direction to the left and right, and the chute cap 15 turns up and down to change the snow throwing direction up and down. The basic structure of the blower 11 and the chute 14 is well known.

  A brush cover 16 is provided from the front ends of the side plates 7 and 7 of the rotating brush 6 to the casing 11 a of the blower 11. The front end portion 16 a (FIG. 8) of the brush cover 16 is curved so as to follow the outer peripheral surface of the rotary brush 6, and the rear portion 16 b of the snow throwing cylinder 11 d is positioned more than the central axis 11 b of the blower 11. The other portion 16c opened to a lower position and laterally removed from the snow throwing cylinder 11d is opened to a position higher than the central axis 11b. The brush cover 16 guides the snow picked up by the rotating brush 6 to the blower 11.

  When removing snow, the swivel frame 24 is set to the working height position, and the snow removal depth by the rotating brush 6 is determined. Then, while the rotating brush 6 is rotated counterclockwise in FIG. 8 by the hydraulic motors 9 and 12, and the blower blade 11c of the blower 11 is rotated clockwise in FIG. 7, the traveling vehicle 3 is moved from left to right in FIG. Move forward.

  The rotating brush 6 is rotated up-cut by a hydraulic motor 9 to scrape snow. When the snow removal surface has irregularities, the linear member 6c of the rotating brush 6 bends according to the irregularities, so that snow is scraped up without remaining. Even if the wire member 6c touches the signal communication device or the like, the device or the like is not damaged.

  The snow picked up by the rotation of the rotary brush 6 is guided to the blower 11 by the brush cover 16, accelerated by the blower blade 11c, and thrown out through the snow throwing cylinder 11d and the chute 14. In this case, since the snow guided by the cover portion 16b at the position of the snow throwing cylinder 11d enters the blower portion before the blower blade 11c moves upward from the rotation lowering and becomes level, the blower blade 11c during the rotation rising is more sufficient. And is thrown into the snow throw cylinder 11d.

  Further, the snow guided by the other cover portion 16c that is laterally removed from the snow thrower 11d moves downward after the blower blade 11c moves up the portion A directly below the snow thrower 11d and moves to the position of the snow thrower 11d. Since it enters the blower part until it rises to the cover part 16b, it is sufficiently accelerated by the blower blade 11c in this case as well and thrown out to the snow throwing cylinder 11d.

  As described above, the brush cover 16 is not opened in the portion A directly below the snow throwing cylinder 11d and does not guide snow to the portion A. Therefore, the snow scraped up by the rotating brush 6 is blown by the blower blade 11c. The snow is not collided with the snow immediately below the portion A of the snow throwing cylinder 11d that has been accelerated in this way, and is stalled, and the snow throwing ability of the blower 11 is not reduced.

  In the present invention, as shown in FIGS. 1 to 6, two rotary brush type rotary snow removal devices 2 as described above are installed in the track vehicle 3. As shown in FIGS. 1 and 2, the vehicle body 4 of the track vehicle 3 has a plurality of wheels 4 </ b> A on the left and right sides, and frame frames 21 and 21 that are structural members in the length direction are provided on the left and right sides of the vehicle body 4. These underframes 21 and 21 support a load. A swivel base 22 is rotatably provided at substantially the center of the base frames 21 and 21, and the swivel base 22 has a fixed height position. A rotation center shaft 23 is provided vertically at the rotation center of the swivel base 22, and a rotation frame 24 is provided on the rotation center shaft 23 so as to be able to rotate and move up and down. The rotation center shaft 23 is inserted into the center of the rotation frame 24. An insertion hole 25 is formed. The swivel base 22 can rotate in both the clockwise direction and the counterclockwise direction. Further, the insertion hole 25 is constituted by a thrust bearing 25 </ b> A through which the rotation center shaft 23 is inserted, and the rotational force of the rotation center shaft 23 is not transmitted to the turning frame 24. Further, the upper end of the rotation center shaft 23 and the left and right underframes 21 and 21 are supported by a gate-shaped reinforcement frame 21A, and the rotation center shaft 23 is rotatably provided on a bearing 21B provided on the reinforcement frame 21A. Yes.

  As shown in FIGS. 1 to 3, the snow removal devices 2 and 2 are provided on the front and rear arms 24 </ b> A and 24 </ b> A of the revolving frame 24. The snow removal device 2 on the front side is located on the right side with respect to the traveling direction, and the snow removal device 2 on the rear side is located on the left side with respect to the traveling direction. As described above, the rotary brushes 6 and 6 of the front and rear snow removal devices 2 and 2 share the snow removal ranges on the right side and the left side from the center in the width direction of the vehicle body 4. As shown in FIG. 1 and the like, the rotating brush 6 of the snow removal device 2 on the front side in the traveling direction is farther from the rotation center shaft 23 than the rotating brush 6 of the snow removing device 2 on the rear side in the traveling direction.

  The revolving frame 24 is provided with rotation transmission holes 26 and 26 as rotation transmission portions on both sides of the insertion hole 25 in parallel with the insertion hole 25, and the rotation transmission holes 26 and 26 transmit the rotation to the rotation transmission holes 26 and 26. The rotation transmission shafts 27 and 27 as members are inserted so as to be slidable in the rotation and length directions, respectively, and the lower portions of the rotation transmission shafts 27 and 27 are fixed to the swivel base 22. The width of the rotating brush 6 in the left-right direction of the vehicle is narrower than the width of the vehicle 3, and the front and rear rotating brushes 6, 6 overlap at the center in the left-right direction of the vehicle.

  The swivel base 22 is provided with an elevating device 28 for elevating the revolving frame 24. As the elevating device 28, a fluid pressure cylinder or the like is used, and a hydraulic cylinder is exemplified as the fluid pressure cylinder. Further, the track vehicle 3 is provided with a rotation drive means 29 for rotating the turning frame 24. In this example, the rotation driving means 29 rotates the turning frame 22 to rotate the turning frame 24. To drive. During the traveling of the vehicle 3, the snow removal devices 2 and 2 are fixed and the turning frame 24 does not turn.

  Therefore, the swivel frame 24 can be moved up and down with respect to the swivel base 22 by the lifting device 28, and when the swivel base 22 is rotated by driving the rotation driving means 29, a plurality of rotation transmission shafts 27 and 27 are used. The rotational force of the turntable 22 is transmitted to the turntable 24, and the turntable 24 rotates together with the turntable 22. In this case, since the rotation of the swivel base 22 is transmitted to the swivel frame 24 by the rotation transmission shaft 27 located away from the rotation center shaft 23, the swivel frame 24, which is a heavy object including two snow removing devices 2 and 2, is provided. Can rotate smoothly. The rotation center shaft 23 and the rotation transmission shaft 27 are circular in cross section.

  Next, the effect | action is demonstrated about the said structure. As shown in FIGS. 1 and 2, when the right side is the forward traveling direction in the same figure, the rotary brush 6 faces the front side of the snow removal device 2, the snow removal devices 2 and 2 face forward, and the track vehicle 3 travels. Then, snow removal on the track is performed by the snow removal devices 2 and 2 on both the left and right sides. When the snow removal in the predetermined section is completed, the track vehicle 3 is stopped, the lifting device 28 is driven to raise the turning frame 24, and the snow removal devices 2 and 2 are attached to the vehicle body 4 even if turning as shown in FIG. Ascend to a position where it does not interfere and stop. Thereafter, as shown in FIG. 4, the turning frame 24 is rotated approximately 180 degrees by the rotation driving means 29 to change the direction of the snow removal devices 2 and 2. After the rotation, the elevating device 28 is driven to lower the snow removal devices 2 and 2 to the use position, and at this position, the rotating brush 6 is below the underframe 21 (FIG. 6).

  In this way, it is possible to change the direction of the snow removal devices 2 and 2 and run the track vehicle 3 in the reverse direction to remove snow on the return path.

  Thus, in the present embodiment, corresponding to claim 1, in the rotary brush type rotary snowplow 1 provided with the rotary brush type rotary snow removal device 2, the turning frame 24 is rotatably provided on the railway track vehicle 3, Since the rotary brush type rotary snow removal devices 2 and 2 are respectively provided before and after the swivel frame 24, the vehicle 3 is traveled in the state where the front and rear rotary brush type rotary snow removal devices 2 and 2 are directed in the traveling direction, and snow removal on the forward path is performed. After the snow removal of a predetermined section is completed, the vehicle 3 is run on the return path while the swivel base 22 is rotated by the rotation driving means and the front and rear rotary brush type rotary snow removal devices 2 and 2 are reversed. Snow removal can be performed, and snow removal can be performed when the vehicle 3 reciprocates.

  Further, in this embodiment, in accordance with the second aspect of the present invention, since the elevating device 28 that drives the revolving frame 24 to move up and down is provided, the elevating device 28 allows the rotary brush type rotary snow removing device 2 at the use position to be attached to the vehicle 3. It is possible to avoid the underframe 21 and the like and raise it to a position where it can turn, and then rotate the turning frame 24 at this position to change the direction and lower it again to the use position.

  In this way, in this embodiment, corresponding to claim 3, the turntable 22 is rotatably provided on the railway track vehicle 3, the turntable 22 is provided with the rotation center shaft 23, and the rotation center shaft 23 is provided. The swivel frame 24 is provided so as to be able to rotate and lift, and the lifting device 28 lifts and lowers the swivel frame 24 with respect to the swivel base 22, and a rotation transmission shaft 27 as a rotation transmission member that transmits the rotation of the swivel base 22 to the swivel frame 24. Provided, and provided with a rotational drive means 29 for rotationally driving the swivel base 22, the swivel frame 24 moves up and down along the rotation center axis 23 provided on the swivel base 22, and the swivel base 22 is rotated by the rotational drive means 29. By transmitting the rotation to the revolving frame 24 by the rotation transmission shaft 27, the revolving frame 24, which is a heavy object including the two rotary brush type rotary snow removing devices 2 and 2, can be smoothly rotated.

  As described above, in this embodiment, the rotary brush type rotary snow removal devices 2 and 2 facing one side in the front-rear direction are provided on the left and right sides and the other side of the vehicle respectively in front of and behind the turning frame 24 in correspondence with the fourth aspect. Since the snow removal in the entire width direction of the vehicle 3 can be performed by the left and right ones and the other snow removal devices 2, 2, the width dimension of the rotating brush 6 can be suppressed.

  In addition, as an effect on the embodiment, the rotary brush type rotary snow removal device 2 includes a rotary brush 6 that is rotatably supported in the circumferential direction with the axial direction of the fuselage being in a horizontal state and substantially orthogonal to the traveling direction of the vehicle 3; An axial direction of a central shaft 11b of a blower blade 11c accommodated in a casing 9a having a snow rotating cylinder 11d and a motor 9 as a brush rotation driving device for rotating the rotating brush 6 so that its front side moves from bottom to top With the blower 11 supported by the frame 5 at the rear part of the rotary brush 6 and the hydraulic motor 12 as a blower rotary drive device for rotating the blower blades 11c of the blower 11. Since the brush cover 16 that guides the snow picked up by the rotating brush 6 to the blower 11 is provided, it is possible to eliminate the incidental structure of the track without damaging it without damaging it. Kill. For this reason, damage to various underfloor equipment, train delays, and the like caused by the remaining snow can be prevented.

  Furthermore, as an effect of the embodiment, since the upper end of the rotation center shaft 23 and the left and right base frames 21 and 21 are supported by the gate-shaped reinforcing frame 21A, the rotation center shaft 23 is supported up and down, Rotation and raising / lowering can be performed smoothly. In addition, since almost all devices are arranged on the turntable 22, attachment to the vehicle 3 can be easily performed.

  FIGS. 10-12 shows Example 2 of this invention, attaches | subjects the same code | symbol to the same part as the said Example 1, and abbreviate | omits the detailed description. In this example, a rotary elevator 31 is provided at the center of the revolving frame 24. The rotary lifting body 31 has a plate-like upper portion 32 and a lower portion 33 connected by a plurality of vertical rods 34, and is provided with the arm portions 24A and 22A in the front and rear, and the snow removal device at the tips of the arm portions 24A and 22A. 2 and 2 are provided. The thrust bearings 25A and 25A are provided at the rotation centers of the upper part 32 and the lower part 33, respectively, and the insertion hole 25 is constituted by the thrust bearing 25A.

  A fixed receiving seat 35 is fixed to the vehicle body 4, and the swivel base 22 is rotatably provided on the fixed receiving seat 35. The swivel base 22 is rotated by a motor 29A serving as a rotation driving means. The rotational force is transmitted to the swivel base 22 by a rotation transmission means such as a chain.

  Further, a plurality of fluid pressure cylinders 36, 36 as lifting devices are provided between the swivel base 22 and the upper portion 32. In this example, two fluid pressure cylinders 36, 36 are disposed on both sides of the rotation center shaft 23. The fluid pressure cylinders 36, 36 are loosely inserted into the through holes 33A of the lower portion 33. The fluid pressure cylinder 36 includes a main body 36A and a telescopic rod 36B provided to the main body 36A so as to be extendable and contracted. The lower end of the main body 36A is connected to the swivel base 22 by a pivot 37, and the fluid pressure is centered on the pivot 37. The cylinder 36 is connected so as to be rotatable in the diameter direction passing through the center of the rotation center shaft 23. The upper end of the telescopic rod 36B is connected to the upper portion 32 by a universal joint 38 so as to be able to swing 360 degrees. In FIG. 11, the rotation transmission shaft 27 is not shown.

  The lower portion 33 is provided with a thrust bearing 39 as a rotation transmission portion through which the rotation transmission shaft 27 is inserted, and the rotation transmission shaft 27 is loosely inserted in the upper portion. Further, as shown in FIG. 12, the rotation transmission shaft 27 is disposed at a position close to the fluid pressure cylinder 36, and the rotation transmission shaft 27 and the fluid pressure cylinder 36 are 45 degrees around the rotation center shaft 23. It is preferable to arrange within the range.

  Further, a support structure 41 that supports the upper end of the rotation center shaft 23 is provided, and the support structure 41 is provided with a support column 42 at a position that does not interfere with the snow removal devices 2 and 2 before and after the rotation center shaft 23. Are respectively erected on the left and right underframes 21 and 21, and the upper portions of the four columns 42, 42, 42, 42 adjacent to each other in the front, rear, left, and right are connected by connecting horizontal rods 43, 43, 43, 43. The upper portions of the support posts 42, 42, 42, 42 and the upper portion of the rotation center shaft 23 are connected by connecting horizontal flanges 44, 44, 44, 44 in an oblique plane direction. It is provided so as to be rotatable, and the leading ends of the connecting horizontal rods 44, 44, 44, 44 are connected to the rotating ring.

  As described above, the present embodiment includes the motor 29A serving as the rotational drive means and the fluid pressure cylinder 36 serving as the lifting device, and thus provides the same operations and effects corresponding to the above-described embodiments.

  Further, as an effect of the embodiment, the fluid pressure cylinder 36 which is an elevating device has an upper end which is one end thereof connected to the swivel frame 24 so as to be swingable, and a lower end which is the other end can be turned to the swivel base 22. Since they are connected, the rotary lifting body 31 inserted through the rotation center shaft 23 can be smoothly driven up and down. Further, since the lower portion of the rotation center shaft 23 is fixed to the swivel base 22 and the upper portion of the rotation center shaft 23 is rotatably supported by the support structure 41, the swivel frame 24 that is a heavy object can be smoothly rotated and moved up and down. it can.

  The present invention is not limited to this embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, in the embodiment, an example in which the rotation axis of the rotary brush is orthogonal to the vehicle front-rear direction has been described, but the rotary brush rotation axis may be used obliquely with respect to the vehicle front-rear direction. . Alternatively, the swivel frame may be fixed to the rotation center axis, the rotation center axis may be provided to extend and retract, and the swivel frame may be moved up and down to rotate the swivel frame integrally with the rotation center axis. Further, in the embodiment, the lower end of the rotation center axis is fixed to the swivel, but the rotation center axis may be fixed to the vehicle body and the swivel may be provided to be rotatable around the rotation center axis. The lifting device is not limited to a fluid pressure cylinder, and various types of devices such as a jack type and a lifting type can be used.

DESCRIPTION OF SYMBOLS 1 Rotating brush type rotary snowplow 2 Snow removal device 3 Track vehicle 5 Frame 6 Rotating brush 22 Rotating base 23 Rotating center shaft 24 Rotating frame 26 Rotation transmission hole (rotation transmission section)
27 Rotation transmission shaft (Rotation transmission member)
28 Lifting Device 29 Rotation Drive Unit 29A Motor (Rotation Drive Unit)
36 Fluid pressure cylinder (lifting device)

Claims (4)

In a rotary brush type rotary snowplow equipped with a rotary brush type rotary snow removal device, a rolling frame is rotatably provided on a railway track vehicle, and an elevating device for raising and lowering the turning frame is provided. A rotary brush type rotary snowplow provided with the rotary brush type rotary snowplow for one side. The rotary brush type rotary snowplow according to claim 1, further comprising an elevating device that drives the revolving frame up and down. A swivel base is rotatably provided on a railway track vehicle, a rotation center axis is provided on the turn base, the swivel frame is provided on the rotation center axis so as to be able to rotate and lift, and the lifting device is The rotary brush type rotary according to claim 2, further comprising: a rotation transmission means for raising and lowering the swivel frame, providing a rotation transmission member for transmitting rotation of the swivel base to the swivel frame, and rotating the swivel base. Snowplow. The rotary brush according to any one of claims 1 to 3, wherein the rotary brush type rotary snow removal device facing one side in the front-rear direction is provided on the left and right sides and the other side of the vehicle before and after the swivel frame, respectively. Rotary snowplow.

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