JP6566911B2 - snowblower - Google Patents

Description

  The present invention provides an auger that laterally feeds snow to a front portion of a traveling machine body, an auger housing that covers a rear side and a lateral side of the machine body of the auger, and releases the snow that is laterally fed by the auger to the outside. And a snow blower equipped with a blower.

  In a conventional snow remover, the rotating shaft of the auger is installed and supported across the side wall portions on both sides of the machine body in the auger housing, and the shaft support portion that rotatably supports the shaft end portion of the rotating shaft on the side walls on both sides in the horizontal direction. Is provided. The auger is provided on the outer periphery of the rotating shaft and laterally feeds the snow as the rotating shaft rotates, and the auger is provided on both ends of the rotating shaft in the lateral direction of the machine body. And a substantially disc-shaped sorting guide body. The side walls on both sides of the sorting guide body and the auger housing located on the laterally outer side of the sorting guide body are flat in the direction perpendicular to or substantially perpendicular to the axial center direction of the rotation shaft. It was formed (for example, refer to Patent Document 1).

JP 2007-32193 A

  While the snowplow is traveling, the snow piled up and piled up is transported laterally by an auger and discharged outward by a blower. At that time, with the sorting guides provided on both sides of the auger body in the lateral direction, the stacked snow is sorted into the laterally fed target snow and the non-targeted snow so that only the target snow within the lateral width of the auger is discharged. It has become.

The shaft support portions that support the shaft end portions of the rotation shaft are provided on the side wall portions on both sides of the auger housing.
In the above-described conventional configuration, the side wall portions on both sides in the lateral direction are formed in a planar shape along the direction orthogonal to or substantially orthogonal to the axial direction of the rotation shaft over the entire surface, so that the shaft end portion of the rotation shaft can be freely rotated. The supporting shaft support portion is provided in a state of protruding outward in the lateral direction of the body from the side wall portion.

  As a result, when carrying out snow removal work, the shaft support projecting outward in the lateral direction of the fuselage from the side wall portion comes into contact with the stacked snow, and resistance to moving travel is increased, or snow is supported by the snow. There is a disadvantage that the shaft support is liable to be damaged due to contact with the shaft.

  Therefore, it has been desired to improve the durability by reducing the running resistance during traveling and reducing the risk of damage to the shaft support portion without causing a significant complication of the configuration.

The characteristic configuration of the snowplow according to the present invention is as follows:
An auger that laterally feeds snow to the front part of the traveling machine body, an auger housing that covers the rear side and the lateral side of the machine body of the auger, and a blower that releases the snow laterally fed by the auger to the outside. Provided,
The auger includes a rotary shaft that is installed and supported across side wall portions on both sides of the machine body in the auger housing, and an auger blade that is provided on an outer peripheral portion of the rotary shaft and laterally feeds snow as the rotary shaft rotates. An approximately disc-shaped sorting guide body that is provided at both ends of the rotating shaft in the lateral direction of the machine body and sorts the snow to be traversed and the non-target snow,
The sorting guide body is formed in an indented shape located on the inner side in the lateral direction of the machine body as the radially inner side,
The side wall portion of the auger housing includes a shaft support extending portion that extends linearly so as to be positioned on the inner side in the lateral direction of the machine body from the radially outer side of the sorting guide body toward the radially inner side. ,
A shaft support portion that rotatably supports the shaft end portion of the rotating shaft is radially inward of the shaft support extension portion so that the shaft support portion is biased inwardly in the lateral direction of the machine body with respect to the outer peripheral portion of the sorting guide body. Provided on the side ,
A side wall portion of the auger housing, a fixed wall portion fixed to the rear wall portion;
A base end side formed separately from the fixed wall portion and provided radially outward of the shaft support portion, the shaft support extension portion, and the shaft support extension portion. A support bracket integrally formed with a support portion;
The fixed wall portion is provided in a state of being located on the radially outer side of the sorting guide body;
An outer peripheral portion of the sorting guide body and an arcuate inner edge portion of the fixed wall portion facing the sorting guide body are provided so as to be close to each other.

  According to the present invention, the sorting guide body is formed in an indented shape that is located on the inner side in the lateral direction of the machine body toward the inner side in the radial direction. In other words, the sorting guide body has the radially outer peripheral portion located on the most laterally outer side, and the center portion of the sorting guide body on which the rotation shaft is located is closest to the inner side in the lateral direction. In the middle-dented concave portion, it is the most recessed portion.

  In this way, the shaft support portion is provided at the most recessed portion in the concave portion having the middle recess shape in the sorting guide body. As a result, the shaft support part does not protrude outward in the lateral direction of the machine body from the outer periphery of the sorting guide body, and when the snow removal work is performed, the shaft support part comes into contact with the stacked snow and is damaged. There is little risk of doing so.

  The extension part for the shaft support, which is provided with the shaft support part at the radially inward side, is linear so that it is located on the inner side in the lateral direction from the radially outer side of the sorting guide body toward the radially inner side. It extends to. Since the extending portion for supporting the shaft extends in a straight line, it can be handled with a simple configuration with less processing effort, and the configuration is not greatly complicated.

  Therefore, according to the present invention, it is possible to reduce the running resistance when traveling and reduce the risk of damaging the shaft support portion without increasing the complexity of the configuration and to improve the durability. It became.

According to the present invention , the support bracket is a small member formed separately from the fixed wall portion for supporting the shaft support portion in a state where the shaft support portion is recessed in the concave portion of the sorting guide body. By doing so, it is easy to process and handle during manufacture.

Furthermore, according to the present invention, the sorting guide body and the fixed wall portion are provided in a state of being close to each other in the radial direction. In other words, during snow removal work, when the stacked snow is sorted into the laterally fed target snow and the non-target snow, it has a function of sorting the snow in a state where the sorting guide body and the fixed wall portion are substantially in series. .

  As a result, there are disadvantages such as a part of the snow to be traversed sorted by the sorting guide body being discharged outside through the gap between the sorting guide body and the fixed wall, or falling on the traveling machine side. Snow removal work can be performed well.

1 is an overall side view of a walking snowplow. 1 is an overall plan view of a walking snowplow. It is a diagram which shows a power transmission structure. It is a front view of a snow removal part. It is a disassembled perspective view of a side wall part. It is a vertical front view of the side end part of an auger.

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

  As shown in FIG. 1, the walking type snowplow includes a traveling machine body 3 in which a pair of left and right crawler traveling devices 2 are mounted on a body frame 1. The traveling machine body 3 includes a pair of left and right steering handles 4 at the rear, and is configured to be a walking type so that the driver can travel and steer the traveling machine body 3 while walking behind the traveling machine body 3. A snow removal unit 5 is disposed in front of the traveling machine body 3. An engine 6 is disposed above the traveling machine body 3 behind the snow removal unit 5. The walking type snowplow can perform snow removal work by the snow removal unit 5 by running the traveling machine body 3.

  As will be described in detail later, the snow removal portion 5 includes an auger housing 7 and a blower case 8 connected to the rear portion of the auger housing 7. Inside the auger housing 7, an auger 9 that laterally feeds snow is supported so as to be able to rotate. The blower case 8 is equipped with a blower 10 that discharges the snow that is laterally fed by the auger 9 to the outside so as to be able to drive and rotate (see FIGS. 1 and 3). A shooter 11 protrudes upward from the blower case 8. The snow removal unit 5 performs snow removal work by discharging the snow collected by the auger 9 and the snow collected by the shooter 11 from the discharge port 11 a by the blowout power of the blower 10.

The traveling body 3 will be described.
As shown in FIGS. 1 and 2, the aircraft frame 1 includes a pair of left and right traveling vehicle body front and rear track frame portions 12 and a traveling frame laterally connecting frame portion 13. The connecting frame portion 13 connects the rear portions of the left and right track frame portions 12. The left and right crawler traveling devices 2 are distributed and supported by the left and right track frame portions 12. As shown in FIG. 1, the left and right crawler traveling devices 2 include a drive wheel body 14 that is drivably supported by the front end portion of the track frame section 12, and a track frame section in a state of being positioned behind the drive wheel body 14. 12, a driven wheel body 15 rotatably supported by 12, and a crawler belt 16 wound around the driving wheel body 14 and the driven wheel body 15. As shown in FIG. 1, a slip-off preventing member 17 is engaged with the crawler belt 16 between the driving wheel body 14 and the driven wheel body 15. The come-off preventing member 17 is supported by the track frame portion 12.

  As shown in FIGS. 1 and 2, the pair of left and right steering handles 4 extend obliquely rearward and upward from the left and right ends of the connection frame portion 13. Handle support frame portions 18 are provided at the left and right ends of the connecting frame portion 13. The left and right handle support frame portions 18 project upward from the connection frame portion 13. A base portion 4 a of the steering handle 4 is supported on the handle support frame portion 18.

  The left and right handle support frame portions 18 are configured by a plate material formed in a substantially U shape that is opened outward in the lateral direction in plan view, and are attached to the connection frame portion 13. The base portions 4 a of the left and right steering handles 4 are supported by the lateral sides of the handle support frame portion 18 on the lateral side of the body. The left and right steering handles 4 are constituted by round pipe members. The base 4a of the left and right steering handles 4 is subjected to a press deformation process in a state where a part of the outer peripheral surface is a flat surface. The base portion 4 a is connected to the handle support frame portion 18 with a flat surface along the side surface of the handle support frame portion 18. A grip portion 4 b is provided at the extended end portion of the left and right steering handles 4. The grip portions 4 b of the left and right steering handles 4 extend in the front-rear direction of the traveling machine body 3.

  The left and right crawler travel devices 2 and the snow removal unit 5 are driven by driving force transmitted from the engine 6 based on the power transmission structure shown in FIG.

  That is, a belt tension type traveling clutch 20 is provided across the output shaft 6 a protruding forward from the engine 6 and the input shaft 19 a of the traveling mission 19. The driving wheel bodies 14 of the left and right crawler traveling devices 2 are linked to the left and right output shafts 19L and 19R of the traveling mission 19. The traveling mission 19 is provided with a hydrostatic continuously variable transmission 21 (hereinafter abbreviated as HST21). The HST 21 shifts the driving force of the input shaft 19a by a variable displacement type axial plunger pump (not shown) and an axial plunger motor (not shown), and the driving force after shifting is changed to the left and right output shafts 19L, 19R. To communicate.

  By switching the travel clutch 20 to the engaged state and shifting the HST 21 to the transmission state, the driving force from the engine 6 is transmitted to the left and right drive wheels 14 and the left and right crawler travel devices 2 are driven. The traveling machine body 3 can be caused to travel. By shifting the speed of the HST 21, the forward drive speed and the reverse drive speed of the left and right crawler traveling devices 2 can be changed steplessly. Therefore, the traveling machine body 3 can be switched between forward and reverse, and can be traveled while being steplessly shifted forward and backward.

  By switching the traveling clutch 20 to the disengaged state or shifting the HST 21 to the neutral state, transmission of the driving force to the left and right crawler traveling devices 2 is cut off, and the traveling machine body 3 can be stopped. .

  An operating portion (tension pulley) of the travel clutch 20 and a travel clutch lever 22 (see FIG. 1) are linked. The traveling clutch lever 22 is supported above the grip portion 4b of the left steering handle 4 so as to be able to swing up and down. By operating the clutch lever 22, the traveling clutch 20 can be switched to the engaged state. The travel clutch lever 22 is configured as a deadman type, and the travel clutch 20 is disengaged by releasing the grip operation. As shown in FIGS. 1 and 2, a shift lever 23 for shifting the HST 21 is provided on the operation panel 24.

  As shown in FIG. 3, a work clutch 25 composed of a belt tension clutch is provided across the output shaft 6 a of the engine 6 and the input shaft 5 a of the snow removal unit 5. The input shaft 5a is provided so as to extend along the longitudinal direction of the machine body. A blower 10 including a blade body that rotates integrally is provided on the outer peripheral portion of the input shaft 5a. A bevel gear mechanism 27 for transmitting power to the rotating shaft 26 of the auger 9 is provided at the front end of the input shaft 5a.

  By switching the work clutch 25 to the engaged state, the driving force from the engine 6 is transmitted to the input shaft 5a, and the auger 9 and the blower 10 can be driven. By switching the work clutch 25 to the disengaged state, transmission of the driving force to the input shaft 5a is cut off, and the auger 9 and the blower 10 can be stopped.

  An operation portion (tension pulley) of the work clutch 25 and a work clutch lever 28 (see FIG. 2) are linked. The working clutch lever 28 is provided above the grip portion 4b of the right steering handle 4 so as to be swingable up and down. By operating the clutch lever 28, the work clutch 25 can be switched to the engaged state.

  The traveling mission 19 is supported at the lower part of the support frame 29. The traveling mission 19 is provided with a pair of left and right cylindrical output case portions 30L and 30R, which are equipped with output shafts 19L and 19R so as to extend outward from the lateral sides of the aircraft case from both lateral sides of the mission case 30. It has been. The left and right output case portions 30L and 30R and the mission case 30 are supported by the support frame 29.

  The support frame 29 is supported by the body frame 1 so as to be swingable up and down with the rotation axis of the drive wheel body 14 of the left and right crawler travel devices 2 as the swing axis Z. The support frame 29 is positioned between the left and right track frame portions 12, and the left output case portion 30 </ b> L of the traveling mission 19 is supported by the left track frame portion 12 of the body frame 1 so as to be relatively rotatable. The output case portion 30R is supported by the right track frame portion 12 of the body frame 1 so as to be relatively rotatable.

  As shown in FIGS. 1 and 2, the snow removal portion 5 is supported by the support frame 29 by connecting the blower case 8 to the front end portion of the support frame 29. The engine 6 is supported by the support frame 29 in a state of being placed on the support frame 29. Although not shown, an elevating drive mechanism capable of swinging the support frame 29 around the swing axis Z is provided. By operating this elevating drive mechanism, the snow removal unit 5 can be adjusted up and down with respect to the traveling machine body 3, and the ground height of the snow removal unit 5 can be adjusted.

Hereinafter, the snow removal unit 5 will be described.
As shown in FIGS. 1, 2, 4, and 5, the auger housing 7 is located on the rear side of the auger 9 and extends in a curved shape in a side view along the vertical direction so as to cover the rear side of the auger 9. The rear wall portion 31 and left and right side wall portions 32 provided in a state of being connected to both sides of the rear wall portion 31 in the machine body lateral direction are provided.

  As shown in FIG. 4, a circular snow-feeding opening 33 is formed at the central portion of the rear wall portion 31 in the lateral direction of the machine body so as to communicate with the inside of the blower case 8. An input shaft 5 a of the snow removal unit 5 is provided in a state of extending in the front-rear direction through the inside of the blower case 8 and the inside of the opening 33. The front portion of the input shaft 5 a is supported by a gear case 34 that houses the bevel gear mechanism 27. The gear case 34 is supported by a support member 35 extending downward from an upper portion of the opening 33 in the rear wall portion 31.

  As shown in FIG. 4, the auger 9 includes a rotating shaft 26 that is installed and supported over the side wall portions 32 on both sides of the machine body in the auger housing 7, and an outer peripheral portion of the rotating shaft 26. Auger blades 36 for laterally feeding snow, and substantially disc-shaped sorting guides 37 provided at both ends of the rotating shaft 26 in the lateral direction of the machine body for sorting the laterally fed snow and the non-target snow. .

  As shown in FIGS. 4 and 6, the sorting guide bodies 37 on both the left and right sides are formed in an indented shape that is located on the radially inward side and on the inward side of the machine body. That is, the sorting guide body 37 has a shape in which the outer peripheral portion is located on the outermost side in the lateral direction of the aircraft and the central portion corresponding to the center of the circle in the side view is located on the innermost side in the lateral direction of the aircraft. A rotating shaft 26 is connected to the center of the sorting guide 37.

  A reinforcing member 38 made of a rod body extends over a radially outer side portion on the side surface on the inner side in the machine body lateral direction of the sorting guide body 37 and a portion near the inner side in the machine body lateral direction from the shaft end portion of the rotating shaft 26. Are connected. Two reinforcing members 38 are provided at intervals in the circumferential direction. By providing such a reinforcing member 38, it is possible to prevent the sorting guide body 37 from being deformed even if it receives an unreasonable force in the lateral direction of the machine body due to the pressure of the laminated snow.

  The side wall portion 32 of the auger housing 7 includes a fixed wall portion 39 fixed to the rear wall portion 31 and a support bracket 40 formed separately from the fixed wall portion 39. The fixed wall portion 39 is provided in a state of being positioned on the radially outer side of the sorting guide body 37, and an outer peripheral portion 37 a of the sorting guide body 37 and an arcuate inner edge portion facing the sorting guide body 37 of the fixed wall portion 39. 39a is provided in a state of being close to each other and in the same or substantially the same position along the lateral direction of the airframe.

  When the explanation is added, as shown in FIG. 5, a band-plate-like mounting side plate 41 is integrally formed by welding on the laterally outer side end portion of the rear wall portion 31 along the arc-shaped end edge. Connected. In the lower region near the auger 9 in the mounting side plate 41, the arc-shaped inner edge portion 41a facing the sorting guide body 37 and the outer peripheral portion 37a of the sorting guide body 37 are close to each other and in the lateral direction of the machine body. It is provided in the state which becomes the same or substantially the same position along.

  In the upper region located on the upper side of the auger in the attachment side plate 41, the distance from the outer peripheral portion of the sorting guide body 37 becomes larger as it is located on the upper side. In the upper region, the side wall portion structure 42 is attached to the attachment side plate 41. The side wall structure 42 is connected to the mounting side plate 41 by a plurality of bolts Bo. The arcuate inner edge portion 42a facing the sorting guide body 37 in the side wall structure 42 and the outer peripheral portion of the sorting guide body 37 are in the close proximity and at the same or substantially the same position along the lateral direction of the machine body. It is provided in the state.

  Accordingly, the fixing side wall 41 is constituted by the mounting side plate 41 and the side wall portion constituting body 42, and the fixed wall portion is constituted by the arc-shaped inner edge portion 41 a of the mounting side plate 41 and the inner edge portion 42 a of the side wall portion constituting body 42. 39 inner edge portions 39a are formed. And in the whole range of the area | region which opposes the sorting guide body 37 from the lower end part of the fixed wall part 39 to an upper end part, the arc-shaped inner edge part 39a which faces the sorting guide body 37 in the fixed wall part 39, and the sorting guide body 37 The outer peripheral portion 37a is provided in a state of being close to each other and in the same or substantially the same position along the lateral direction of the body.

  As shown in FIGS. 1 and 5, the support bracket 40 is configured by a plate-like body extending in the front-rear direction, and a base-side support portion 43 for attachment is formed at the rear end portion. The base end side support portion 43 is connected to the mounting side plate 41 by a plurality of bolts Bo in a state of being applied to the outer side surface of the mounting side plate 41. The base end side support part 43 is provided in a state extending in an arc shape in a side view along the attachment side plate 41. Therefore, the base end side support portion 43 is in a posture along the front-rear direction of the machine body, in other words, in a posture along a direction orthogonal or substantially orthogonal to the axial direction of the rotating shaft 26, as with the attachment side plate 41. Is provided.

  The support bracket 40 has an outwardly extending portion 44 extending in a state extending obliquely laterally outward from the base end side support portion 43. Furthermore, it passes from the outwardly extending portion 44 through the relay surface 45 in a posture along the longitudinal direction of the machine body, and is located on the laterally inward side of the machine body from the radially outward side of the sorting guide body 37 toward the radially inward side. As described above, a shaft support extending portion 46 extending linearly is extended.

  A shaft support portion 47 that rotatably supports the shaft end portion of the rotating shaft 26 is provided at a radially inner side portion of the shaft support extending portion 46. The shaft support 47 is provided on the shaft support extension 46 in a state of being in a posture along a direction orthogonal or substantially orthogonal to the axial direction of the rotating shaft 26. The base end side support portion 43 is provided in a posture that is substantially in the same direction as the shaft support portion 47, that is, in a posture along a direction that is orthogonal or substantially orthogonal to the axial direction of the rotating shaft 26.

  The shaft support 47 provided in the shaft support extension 46 as described above is in a state of being biased inwardly in the lateral direction of the machine body with respect to the outer peripheral portion 37 a of the sorting guide body 37. That is, the shaft support extending portion 46 is extended so as to enter the recessed portion so that the shaft supporting portion 47 is positioned at the most recessed portion in the middle recessed portion of the sorting guide body 37. As shown in FIG. 6, a bearing member 49 that houses a bearing 48 that rotatably supports the rotating shaft 26 is attached to the shaft support portion 47. The bearing member 49 is connected to the shaft support 47 by a bolt Bo.

  A pair of upper and lower reinforcing ribs 50 extending in the extending direction (the longitudinal direction of the machine body) are formed in the shaft support extending portion 46 extending linearly in the support bracket 40. The reinforcing rib 50 is formed by bending a plate material so as to bulge outward in the lateral direction. By forming such a reinforcing rib 50, the support bracket 40 is hardly deformed. Reference numeral 51 shown in FIGS. 1 and 2 is a cover that covers the upper portion of the front portion of the traveling machine body 3 and is supported by the auger housing 7.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a snowplow having an auger that laterally feeds snow and an auger housing that covers the rear side and the lateral side of the auger at the front of the traveling machine body.

3 traveling machine body 7 auger housing 9 auger 10 blower 26 rotating shaft 32 side wall portion 36 auger blade 37 sorting guide body 37a outer peripheral portion 39 fixed wall portion 39a inner edge portion 40 support bracket 43 base end side support portion 46 shaft support extending portion 47 Shaft support

Claims (1)

An auger that laterally feeds snow to the front part of the traveling machine body, an auger housing that covers the rear side and the lateral side of the machine body of the auger, and a blower that releases the snow laterally fed by the auger to the outside. Provided,
The auger includes a rotary shaft that is installed and supported across side wall portions on both sides of the machine body in the auger housing, and an auger blade that is provided on an outer peripheral portion of the rotary shaft and laterally feeds snow as the rotary shaft rotates. An approximately disc-shaped sorting guide body that is provided at both ends of the rotating shaft in the lateral direction of the machine body and sorts the snow to be traversed and the non-target snow,
The sorting guide body is formed in an indented shape located on the inner side in the lateral direction of the machine body as the radially inner side,
The side wall portion of the auger housing includes a shaft support extending portion that extends linearly so as to be positioned on the inner side in the lateral direction of the machine body from the radially outer side of the sorting guide body toward the radially inner side. ,
A shaft support portion that rotatably supports the shaft end portion of the rotating shaft is radially inward of the shaft support extension portion so that the shaft support portion is biased inwardly in the lateral direction of the machine body with respect to the outer peripheral portion of the sorting guide body. Provided on the side ,
A side wall portion of the auger housing, a fixed wall portion fixed to the rear wall portion;
A base end side formed separately from the fixed wall portion and provided radially outward of the shaft support portion, the shaft support extension portion, and the shaft support extension portion. A support bracket integrally formed with a support portion;
The fixed wall portion is provided in a state of being located on the radially outer side of the sorting guide body;
A snowplow provided with an outer peripheral portion of the sorting guide and an arcuate inner edge of the fixed wall facing the sorting guide .

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