JP2019218743A - Walking-type snowplow - Google Patents

Abstract

To lower the cost of manufacturing the drive sprocket and the like, and to reduce the weight of the machine body.SOLUTION: A walking-type snowplow includes a machine body and a crawler traveling device for traveling the machine body. The crawler traveling device comprises: a drive sprocket 23 and a driven sprocket; and a crawler belt wound around the drive sprocket 23 and the driven sprocket. The drive sprocket 23 comprises: a core bar part 232 to which is connected a drive shaft D for transmitting power from a drive source to the drive sprocket 23; a rim part 230 that acts on the crawler belt; and a spoke 231 that connects the core bar part 232 and the rim part 230. The rim part 230 and the spoke 231 are made of resin. The core bar part 232, the rim part 230, and the spoke 231 are integrated.SELECTED DRAWING: Figure 4

Description

  The present invention includes an airframe main body, and a crawler running device that drives the airframe main body, and the crawler running device is wound around a driving sprocket, a driven sprocket, and the driving sprocket and the driven sprocket. The present invention relates to a walking snow plow having a crawler.

  As this type of walking snow remover, there is one disclosed in Patent Document 1, for example. In the walking snow plow disclosed in Patent Literature 1, both the driving sprocket and the driven sprocket in the crawler traveling device are made of casting.

JP, 2017-115309, A

  In a conventional walking snowplow, there is room for improvement in terms of reducing the manufacturing cost of the driving sprocket and the like and reducing the weight of the body of the machine.

  The present invention provides a walking snow plow that contributes to a reduction in the manufacturing cost of the driving sprocket and a reduction in the weight of the body of the vehicle.

The walking type snow plow according to the present invention comprises:
The fuselage body,
A crawler traveling device that travels and drives the aircraft body,
The crawler traveling device has a drive sprocket, a driven sprocket, and a crawler belt wound around the drive sprocket and the driven sprocket.
The drive sprocket includes a core bar to which a drive shaft that transmits power from a drive source to the drive sprocket is connected, a rim that acts on the crawler belt, and a spoke that connects the core bar and the rim. And the rim portion and the spoke portion are made of resin, and the cored bar, the rim portion, and the spoke portion are integrated.

  According to this configuration, the rim portion and the spoke portion of the drive sprocket are made of resin, so that the manufacturing cost can be suppressed lower and the body weight of the fuselage is lighter than that of a conventional drive sprocket made by casting. Can be

  In the present invention, the metal core portion includes a cylindrical portion to which the drive shaft is connected, and a ring-shaped plate member provided on an outer peripheral surface of the cylindrical portion, and the ring-shaped plate member is provided on the spoke portion. Preferably, it is buried.

  According to this configuration, since the ring-shaped plate member of the cored bar is embedded in the spoke portion made of resin, the cored bar and the resin portion including the rim portion and the spoke portion are firmly connected. Integrated into

  In the present invention, it is preferable that concave portions and convex portions are alternately formed in the circumferential direction in the ring-shaped plate member.

  According to this configuration, since the concave portions and the convex portions are alternately formed in the circumferential direction in the ring-shaped plate member, the resin portion including the rim portion and the spoke portion is engaged with the ring-shaped plate member, and the ring-shaped plate member is further strengthened. Integrated into

  In the present invention, it is preferable that the driven sprocket is made of resin.

  According to this configuration, since the driven sprocket is also made of resin, the manufacturing cost can be further reduced, and the weight of the body itself can be further reduced.

It is a side view which shows the whole walking type snow plow. It is a top view showing the whole walk type snow plow. It is a cross-sectional view showing a driving sprocket. It is a side view which shows a drive sprocket. It is a perspective view which shows the core part of a drive sprocket.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view showing the entire walking snowplow according to the embodiment of the present invention. FIG. 2 is a plan view showing the entire walking snowplow according to the embodiment of the present invention. The direction of [F] shown in FIGS. 1 and 2 is “front side” of the body main body, the direction of [B] is “rear side” of the body body, and the direction of [L] is “left side” of the body body, [R]. Is defined as [right side] of the fuselage body.

  As shown in FIGS. 1 and 2, the walking snow remover includes a body frame 3 in which a body frame 1 is provided with a pair of left and right crawler traveling devices 2. The fuselage body 3 includes a pair of left and right steering handles 4 provided at a rear portion thereof, and is configured to be a walking type so as to travel and steer the body body 3 while walking behind the body 3. A snow removal unit 10 is disposed in front of the body 3. The engine 5 is arranged above the body 3 behind the snow removing section 10. The engine 5 is supported by the support frame 30 while being mounted on the support frame 30.

  The fuselage frame 1 includes a pair of left and right body frame front-rear track frames 20 and a horizontal connection frame portion 21. The connection frame portion 21 connects the rear portions of the left and right track frame portions 20.

  The left and right crawler traveling devices 2 are driven by a drive sprocket 23 that is drivably supported at the front end of the track frame portion 20, and a driven sprocket that is rotatably supported by the track frame portion 20 while being located behind the drive sprocket 23. A sprocket 24 and a crawler belt 25 wound around the driving sprocket 23 and the driven sprocket 24 are provided. Between the driving sprocket 23 and the driven sprocket 24, a stopper member 26 is engaged with the crawler belt 25. The retaining member 26 is supported by the track frame section 20. The left and right crawler traveling devices 2 and the snow removing unit 10 are driven by transmitting a driving force from the engine 5.

  As shown in FIGS. 3 and 4, the driving sprocket 23 includes a cored part 232 to which a driving shaft D that transmits power from the engine 5 (driving source) to the driving sprocket 23 is connected, and a passive projection of the crawler belt 25. A rim 230 acting on the rim 250; and a spoke 231 connecting the core 232 and the rim 230. The rim 230 and the spoke 231 are made of resin. 230 and the spoke part 231 are integrated.

  According to this configuration, since the rim 230 and the spokes 231 of the drive sprocket 23 are made of resin, the manufacturing cost can be reduced as compared with a conventional drive sprocket made of a cast, and the body of the machine 3 can also be reduced in weight.

  As shown in FIG. 5, the core metal part 232 includes a cylindrical part 233 to which the drive shaft D is connected, and a ring-shaped plate member 234 provided on the outer peripheral surface of the cylindrical part 233. The ring-shaped plate member 234 is fixed to the outer peripheral surface of the cored bar 232 by welding. In the ring-shaped plate member 234, the concave portions 235 and the convex portions 236 are formed alternately in the circumferential direction. The concave portion 235 according to the present embodiment includes a large concave portion 235a having a large width, and a small concave portion 235b having a width and depth smaller than the large concave portion 235a and provided at the bottom of the large concave portion 235a. . In addition, the convex portion 236 in the present embodiment has a substantially inverted trapezoidal shape that becomes wider outward in the radial direction of the ring-shaped plate member 234.

  As shown in FIGS. 3 and 4, the ring-shaped plate member 234 is embedded in the spoke portion 231. In the present embodiment, two annular metal plates 237 smaller than the diameter of the driving sprocket 23 and larger than the diameter of the ring-shaped plate member 234 sandwich the spoke portion 231 of the driving sprocket 23. It is arranged and fixed by a nut N and a bolt B inserted across the two metal plates 237 and the spoke portion 231 of the drive sprocket 23. Note that the two metal plates 237 may be provided as needed.

  As shown in FIGS. 1 and 2, the pair of left and right steering handles 4 extend upward and rearward from the left and right ends of the connection frame 21. The left and right handle support frame portions 22 are formed by plate members. The plate-shaped member is attached to the connection frame portion 21 in an attachment posture in which the plate thickness direction is the body width direction. The bases 4a of the left and right steering handles 4 are supported on the lateral sides of the handle support frame 22 on the lateral side of the body. The left and right steering handles 4 are constituted by round pipe members. The base portions 4a of the left and right steering handles 4 are subjected to a pressing deformation process in a state where a part of the outer peripheral surface is flat. The base 4a is connected to the handle support frame 22 with a flat surface along the side surface of the handle support frame 22. In the present embodiment, the base 4a and the handle support frame 22 are connected by connecting bolts. The connecting means between the base 4a and the handle support frame 22 is not limited to the connecting bolt, but may be welding.

  A grip 4b is provided at the extended end of the left and right steering handles 4. The grips 4b of the left and right steering handles 4 extend in the front-rear direction of the body 3 of the aircraft. A portion between the grip portion 4b and the base portion 4a of the left and right steering handles 4 is connected by a reinforcing rod 41. The left and right steering handles 4 reinforce each other by supporting each other by the connection with the reinforcing rod 41. An operation panel 42 is supported between the left and right steering handles 4.

  The support frame 30 is supported by the body 3 so as to be able to swing up and down with the rotation axis of the drive sprocket 23 of the left and right crawler traveling devices 2 as the swing axis Z. The support frame 30 includes an operation arm 31 extending rearward from a rear portion of the support frame 30. An elevating drive mechanism 32 is provided over the extended end of the operation arm 31 and the body frame 1. The elevating drive mechanism 32 is driven to adjust the swing of the support frame 30 up and down with respect to the body frame 1, and is stopped to fix the support frame 30 at the adjusted swing position.

  By operating the lifting / lowering drive mechanism 32, the snow removal unit 10 can be adjusted vertically with respect to the body 3 and the height of the snow removal unit 10 with respect to the ground can be adjusted. In order to adjust the height of the snow removing unit 10 to the ground, the support frame 30 swings up and down with the rotation axis of the driving sprocket 23 of the left and right crawler traveling device 2 as the swing axis Z, and the snow removing unit 10 and the engine 5 are rotated. And a traveling transmission (not shown) integrally swings up and down with the rotation axis of the left and right drive sprockets 23 as the swing axis Z, so that the work transmission system for transmitting the driving force from the engine 5 to the snow removing unit 10. Also, there is no need to provide a special interchangeable structure for allowing the snow removing unit 10 to move up and down in the traveling transmission system that transmits the driving force from the engine 5 to the left and right crawler traveling devices 2. Further, even if the height of the snow removing unit 10 is changed, the attitude of the body 3 is not changed, and the attitude of the steering wheel 4 is not changed.

  The elevating drive mechanism 32 and the battery 6 for the power supply are arranged in the lateral width direction of the body main body. The protrusion of the battery 6 backward from the lifting drive mechanism 32 can be suppressed. Further, the battery 6 is unlikely to become an obstacle when performing the work of inspecting and repairing the lifting drive mechanism 32 from the rear of the body of the machine.

  As shown in FIG. 2, the lifting operation switch 7 is supported by the right steering handle 4 in a state where it is located on the inside of the grip portion 4 b of the right steering handle 4 on the lateral side of the fuselage. The elevating operation switch 7 is located at a position where a finger that supports the grip portion 4b can be operated with fingers. Specifically, a boss portion 71 is provided at a position on the front side of the grip portion 4b of the steering handle 4. A support member 72 extends rearward from the boss 71. The elevating operation switch 7 is supported on the extending end of the support member 72. In this embodiment, the lifting operation switch 7 is supported by the right steering handle 4, but may be supported by the left steering handle 4.

  By pushing the front end portion of the lifting / lowering operation switch 7, a lifting / lowering control unit (not shown) controls the electric motor to the lower side, and the snow removing unit 10 can be lowered. By pushing the rear end portion of the raising / lowering operation switch 7, the lifting / lowering control unit controls the electric motor to the raising side, so that the snow removing unit 10 can be raised. As long as the lifting / lowering operation switch 7 is pressed, the snow removing unit 10 continuously moves up and down unless the snow removing unit 10 reaches the stroke end.

The headlight 8 is provided on the operation panel 42.
A hydraulic oil tank 9 is supported by the body 3. Specifically, the hydraulic oil tank 9 is supported by the steering handle 4 via the lower reinforcing rod 7. The hydraulic oil tank 9 and HST (not shown) are connected by an oil supply path 90. The oil supply passage 90 is formed by a flexible hose and has flexibility. By storing the hydraulic oil in the hydraulic oil tank 9, the hydraulic oil is automatically supplied to the HST.

  The snow removing section 10 includes an auger housing 11 and a blower case 12 connected to a rear portion of the auger housing 11, and is supported by the support frame 30 by connecting the blower case 12 to a front end of the support frame 30. ing. An auger 13 is supported by the auger housing 11 so as to be rotatable. A blower 14 is housed in the blower case 12 so as to be rotatable. A shooter 15 projects upward from the blower case 12.

  A snow cutting bar 16 is provided over the entire left and right width of the auger housing 11. The snow cutting bar 16 shaves relatively high piled snow and drops it in front of the auger 13, thereby increasing the efficiency of the snow removing operation.

  The walking snow remover allows the snow removing section 10 to perform the snow removing operation by running the body 3. That is, the snow cut by the snow cutting bar 16 and raked by the auger 13 is discharged from the discharge port 15 a of the shooter 15 by the ejection power of the blower 14.

[Another embodiment]
The driven sprocket 24 in the above-described embodiment may be made of resin. According to this configuration, the manufacturing cost can be further reduced, and the body weight of the machine body can be further reduced.

  The present invention includes an airframe main body, and a crawler running device that drives the airframe main body, and the crawler running device is wound around a driving sprocket, a driven sprocket, and the driving sprocket and the driven sprocket. It can be applied to a walking snow plow having a crawler.

1: body frame 2: crawler traveling device 20: track frame portion 21: connecting frame portion 22: handle support frame portion 23: drive sprocket 230: rim portion 231: spoke portion 232: core metal portion 233: cylindrical portion 234: ring shape Plate member 235: concave portion 235a: large concave portion 235b: small concave portion 236: convex portion 237: annular metal plate 24: driven sprocket 25: crawler belt 250: passive projection 26: retaining member 3: body body 30: support Frame 31: Operation arm unit 32: Lift drive mechanism 4: Steering handle 4a: Base 4b: Grip unit 41: Reinforcement rod 42: Operation panel 5: Engine 6: Battery 7: Lift operation switch 71: Boss unit 72: Support member 8 : Headlight 9: Hydraulic oil tank 90: Oil supply path 10: Snow removing section 11: Auger housing 12: Blower case 13: Over moth 14: blower 15: chute 16: Snow Cutting Bar D: drive shaft B: Bolt N: Nut Z: pivot axis

Claims (4)

The fuselage body,
A crawler traveling device that travels and drives the aircraft body,
The crawler traveling device has a drive sprocket, a driven sprocket, and a crawler belt wound around the drive sprocket and the driven sprocket.
The drive sprocket includes a core bar to which a drive shaft that transmits power from a drive source to the drive sprocket is connected, a rim that acts on the crawler belt, and a spoke that connects the core bar and the rim. A walking type snow plow comprising: a rim portion and a spoke portion, wherein the rim portion and the spoke portion are made of resin, and the core bar, the rim portion, and the spoke portion are integrated.   The said metal core part is provided with the cylindrical part to which the said drive shaft is connected, and the ring-shaped plate member provided in the outer peripheral surface of this cylindrical part, The said ring-shaped plate member is embedded in the said spoke part. Item 2. A walking snow plow according to Item 1.   The walking type snow plow according to claim 2, wherein the concave portions and the convex portions are alternately formed in the circumferential direction in the ring-shaped plate member.   The walking snowplow according to any one of claims 1 to 3, wherein the driven sprocket is made of resin.

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