JP2015031061A - Auger type snow remover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve both efficiency and stabilization of snow removal work by an auger type snow remover.SOLUTION: In an auger type snow remover 10, left and right normal rotation augers 41, 41 and left and right reverse rotation augers 42, 42 are disposed coaxially and arranged in a row in a width direction inside an auger housing 21. A blower housing 22 is provided behind and in a widthwise middle portion of the auger housing. A blower 24 is installed in the blower housing. The left and right normal rotation augers are positioned at least over the total range of a width Wb of the blower housing. The left and right reverse rotation augers are individually positioned on both sides of the left and right normal rotation augers, respectively, and are positioned only at the width-directional outward of the width of the blower housing.

Description

  The present invention relates to a technique for improving an auger portion of an auger type snowplow.

  Among snowplows, there is a type of auger type snowplow with an auger housing attached to the front of the machine. The auger housing includes an auger. The auger type snowplow can scrape snow with a front auger while traveling forward, and fly the scraped snow far away through a shooter with a blower. The technology of such an auger type snowplow is known from Patent Document 1.

  In an auger type snowplow known from Patent Document 1, a right and left forward rotation auger and left and right reverse rotation augers that rotate in opposite directions with respect to the left and right forward rotation augers are coaxially arranged in an auger housing. Are arranged in a row in the width direction. A blower housing is provided at the rear of the auger housing and in the center in the width direction. A blower is provided in the blower housing.

  Since the left and right forward augers and the left and right reverse augers rotate in opposite directions, an upward reaction force generated in the left and right forward augers is applied to a downward reaction force generated in the left and right reverse augers. Can be offset by force. For this reason, the floating phenomenon of each auger can be suppressed and the stability of the snow removal work by the auger snow removal machine can be enhanced.

  However, the auger snow removal machine is required not only to stabilize snow removal work but also to remove snow efficiently. There is room for improvement to remove snow more efficiently.

JP 2004-360379 A

  This invention makes it a subject to provide the technique which can aim at coexistence of efficiency improvement and stabilization of the snow removal work by an auger type snow remover.

  According to the first aspect of the present invention, the left and right forward rotating augers that rotate from top to front and lower when removing snow and the left and right rotating augers that rotate in the opposite direction with respect to the left and right forward rotating augers are coaxial. In the auger type snowplow, arranged in a row in the width direction in the auger housing, a blower housing is provided at the rear part of the auger housing and in the center in the width direction, and the blower is provided in the blower housing. The right and left forward rotation augers are positioned over at least the entire width of the blower housing, the left and right reverse rotation augers are individually positioned on both sides of the left and right forward rotation augers, and are larger than the width of the blower housing. An auger type snowplow is provided that is located only on the outer side in the width direction.

  Preferably, the right and left forward rotation augers and the left and right reverse rotation augers are connected by respective shear bolts to the respective rotation shafts for individually driving the respective augers. Yes.

  In the invention according to claim 1, the snow crushed by the left and right reversing augers and the right and left forward augers is collected by the right and left forward augers in the center of the auger housing in the width direction, and at the entrance of the rear blower housing. Sent. The left and right forward augers are positioned at least over the entire width of the blower housing. For this reason, the snow collected at the center in the width direction of the auger housing can be efficiently pushed into the inlet of the blower housing by the right and left forward augers that rotate (forward) from top to bottom. On the other hand, the left and right reversing augers rotate (reverse) from the top to the rear and lower, so that the crushed snow is fed forward. Here, the left and right reversing augers are individually located on both sides of the left and right forward augers, and are located only outside in the width direction with respect to the width of the blower housing. For this reason, the snow collected to the center of the auger housing in the width direction is not pushed out by the left and right reversing augers in a direction away from the inlet of the blower housing. As described above, the snow crushed by the left and right reverse augers and the right and left forward augers can be efficiently pushed into the inlet of the blower housing to remove snow efficiently.

  Moreover, the left and right forward augers and the left and right reverse augers rotate in opposite directions. For this reason, during snow removal, the upward reaction force generated in the left and right forward augers can be offset by the downward reaction force generated in the left and right reverse augers. As a result, the lifting phenomenon of the right and left forward rotation augers can be suppressed, so that the stability of snow removal work by the auger type snow remover can be enhanced.

  Thus, in the invention according to claim 1, it is possible to achieve both efficiency and stabilization of the snow removal work by the auger type snow remover.

  In the invention according to claim 2, the left and right forward rotating augers and the left and right rotating augers are respectively connected to the respective rotating shafts for individually driving the respective augers by shear bolts. By providing each shear bolt individually, the load applied to each shear bolt can be distributed. For this reason, since each shear bolt can be reduced in size, it is easy to replace the shear bolt.

  Moreover, the left and right forward augers and the left and right reverse augers rotate in opposite directions. If the phenomenon of foreign matter biting by one of the forward and reverse augers occurs and the rotation of the one auger is likely to be obstructed, the other auger is rotating in the reverse direction. Easy to eliminate the phenomenon. For this reason, the frequency of exchanging shear bolts can be reduced by suppressing the occurrence of a foreign matter biting phenomenon.

1 is a side view of an auger type snowplow according to the present invention. It is the schematic diagram which looked at the auger drive system shown by FIG. 1 from the front of the auger type snow remover. It is the figure which looked at the auger housing and auger shown by FIG. 1 from the front of the auger type snow removal machine. It is sectional drawing of the structure by which the normal rotation auger shown by FIG. 2 is connected with the rotating shaft by the shear bolt.

  EMBODIMENT OF THE INVENTION The form for implementing this invention is demonstrated below based on an accompanying drawing. “Front”, “Rear”, “Left”, “Right”, “Up”, “Down” follow the direction viewed from the operator, Fr is front, Rr is rear, Le is left, Ri is right Indicates.

  An auger type snowplow according to an embodiment will be described. As shown in FIG. 1, the auger snowplow 10 is a self-propelled snowplow having a machine body 11 (body frame 11) provided with a traveling device 12, a snow removal working unit 13, and a power source 14. An operation handle 15 extends from the rear part of the body 11 to the upper rear part. An operator can operate the snow removal machine 10 with the operation handle 15 while walking with the auger type snow removal machine 10 (hereinafter simply referred to as “snow removal machine 10”).

  The snow removal working unit 13 includes an auger housing 21, a blower housing 22 integrally provided at a rear portion of the auger housing 21 and in the center in the width direction, an auger 23 provided in the auger housing 21, and the blower housing 22. The blower 24 is provided, and the shooter 25 extends upward from the blower housing 22.

  The power source 14 drives the traveling device 12 and the snow removal working unit 13, and is constituted by an engine, for example. The power of the power source 14 is transmitted to the blower 24 through the path of the drive pulley 31, the transmission belt 32, the driven pulley 33, and the transmission shaft 34, and is transmitted from the transmission shaft 34 to the auger 23 via the transmission 35. Snow collected by the auger 23 can be blown away by the blower 24 via the shooter 25. The traveling device 12 may be driven by an electric motor.

  Hereinafter, the snow removal working unit 13 will be described in detail. The blower housing 22 is a bottomed cylindrical member having an inlet 22 a (opening 22 a) on the back surface of the auger housing 21, and is attached to the airframe 11. The blower 24 is attached to the transmission shaft 34 in the blower housing 22. An input shaft 61 of the transmission 35 is connected to the distal end portion of the transmission shaft 34. The transmission 35 is located in the auger housing 21.

  As shown in FIGS. 2 and 3, the auger 23 includes left and right forward augers 41 and 41 that rotate from the top to the front and bottom (in the direction of the arrow Ra) when the snow remover 10 removes snow, It consists of left and right reversing augers 42 and 42 that rotate in opposite directions (arrow Rb direction) with respect to the rolling augers 41 and 41.

  Hereinafter, the rotation direction of the auger 23 is referred to as “forward rotation” when rotating from the top to the front and bottom, that is, in the direction of the arrow Ra (counterclockwise in FIG. 1) during snow removal by the snow remover 10. Further, rotating in the reverse direction relative to the left and right forward augers 41, 41, that is, the direction of the arrow Rb (the clockwise direction in FIG. 1) is referred to as “reverse rotation”.

  The left and right forward rotation augers 41 and 41 are spiral members provided on the left and right forward rotation shafts 43 and 43, respectively. The spiral direction of the left and right forward augers 41 and 41 is a direction in which crushed snow is gathered to the center in the width direction of the auger housing 21 when the left and right forward augers 41 and 41 are forwardly rotated.

  The left and right reversing augers 42 and 42 are spiral members provided on the left and right reversing shafts 44 and 44. The spiral direction of the left and right reversing augers 42 and 42 is a direction in which crushed snow is gathered to the center in the width direction of the auger housing 21 when the left and right reversing augers 42 and 42 are reversed.

  The left and right forward rotation shafts 43, 43 and the left and right reverse rotation augers 42, 42 are arranged coaxially (on the axis Xs shown in FIG. 3) and aligned in a row in the width direction in the auger housing 21. Yes. That is, the left and right forward rotation shafts 43 and 43 and the left and right reverse rotation shafts 44 and 44 are arranged coaxially with each other and are positioned at the front portion of the body 11 (see FIG. 1).

  As shown in FIG. 2, the left and right reversing shafts 44, 44 are constituted by pipe shafts fitted to a reversing drive shaft 62 of the transmission 35 so as to be relatively rotatable. The reverse drive shaft 62 extends in the width direction of the auger housing 21 and can be reversely rotated by inputting a driving force to the input shaft 61. Left and right reverse rotation shafts 63 and 63 are connected to both ends of the reverse drive shaft 62 in the longitudinal direction of the shaft. Left and right reverse rotation shafts 44 and 44 are connected to the left and right reverse rotation rotation shafts 63 and 63 by left and right reverse rotation shear bolts 64 and 64, respectively.

  Further, the transmission 35 includes left and right forward drive shafts 65 and 65. The left and right forward drive shafts 65, 65 are constituted by pipe shafts fitted to the reverse drive shaft 62 so as to be relatively rotatable, and can be rotated forward by inputting a driving force to the input shaft 61. . The left and right forward rotation drive shafts 65 and 65 are connected to the left and right forward rotation rotation shafts 66 and 66, respectively. The left and right forward rotation shafts 43 and 43 are configured by pipe shafts fitted to the left and right forward rotation drive shafts 65 and 65 so as to be relatively rotatable. As shown in FIGS. 2 and 4, left and right forward rotation shafts 43, 43 are connected to the left and right forward rotation rotation shafts 66, 66 by left and right forward rotation shear bolts 67, 67.

  Each shear bolt 64, 64, 67, 67 is a breakable member when a preset shearing force is applied.

  As shown in FIG. 3, the blower housing 22 is provided at the center in the width direction of the auger housing 21, that is, at the width center CL.

  The outer diameters Dg of the left and right forward augers 41 and 41 and the left and right reverse augers 42 and 42 are all the same. The left and right forward rotation augers 41 and 41 and the left and right reverse rotation augers 42 and 42 have the same width Lg. The rotational speeds of the left and right forward augers 41 and 41 and the left and right reverse augers 42 and 42 are all the same.

  The blower housing 22 is formed in a cylindrical shape with a perfect front view. For this reason, the inlet 22a of the blower housing 22 is also formed in a perfect circle shape when viewed from the front. When the auger housing 21 is viewed from the front, the width Wb of the blower housing 22 is the same as the diameter of the inlet 22a.

  The left and right forward augers 41 and 41 are located in the width direction with respect to the width center CL of the auger housing 21 and are spaced apart by an interval Ls in the width direction. The size of the interval Ls is determined in consideration of the snow removal characteristics of the left and right forward augers 41, 41.

  The left and right forward rotating augers 41 and 41 are located over at least the entire range of the width Wb of the blower housing 22 (size along the width direction of the auger housing 21). That is, when the auger housing 21 is viewed from the front, the total distance Lt from the left end of the left normal rotation auger 41 to the right end of the right normal rotation auger 41 is the same or larger than the width Wb of the blower housing 22. The total distance Lt is a size obtained by adding the distance Ls between the left and right forward augers 41 and 41 to the widths Lg and Lg of the left and right forward augers 41 and 41 (Lt = Lg + Lg + Ls).

  The left and right reversing augers 42 and 42 are positioned in the width direction with respect to the width center CL of the auger housing 21. That is, the left and right reversing augers 42 and 42 are individually positioned on both sides of the left and right forward rotating augers 41 and 41 and are positioned only on the outer side in the width direction than the width Wb of the blower housing 22.

  The above description is summarized as follows. Snow crushed by the left and right reversing augers 42 and 42 and the left and right revolving augers 41 and 41 is collected by the left and right revolving augers 41 and 41 to the center in the width direction of the auger housing 21 and the rear blower housing 22 To the inlet 22a.

  The left and right forward augers 41 and 41 are located at least over the entire range of the width Wb of the blower housing 22. For this reason, the snow gathered in the center in the width direction of the auger housing 21 is efficiently pushed into the inlet 22a of the blower housing 22 by the left and right forward augers 41, 41 that rotate (forward) from top to bottom. be able to.

  On the other hand, the left and right reversing augers 42 and 42 rotate (reversely rotate) from the top to the rear and downward, so that the crushed snow is fed forward. Here, the left and right reversing augers 42 and 42 are individually positioned on both sides of the left and right forward rotating augers 41 and 41 and are positioned only on the outer side in the width direction than the width Wb of the blower housing 22. For this reason, the snow collected in the center in the width direction of the auger housing 21 is not pushed out in the direction away from the inlet 22a of the blower housing 22 by the left and right reversing augers 42, 42.

  In this way, the snow crushed by the left and right reversing augers 42 and 42 and the left and right forward augers 41 and 41 can be efficiently pushed into the inlet 22a of the blower housing 22 to efficiently remove snow.

  Moreover, the left and right forward augers 41 and 41 and the left and right reverse augers 42 and 42 rotate in opposite directions. Therefore, the upward reaction force generated in the left and right forward augers 41, 41 during snow removal can be offset by the downward reaction force generated in the left and right reverse rotation augers 42, 42. As a result, the lifting phenomenon of the left and right forward rotating augers 41 and 41 can be suppressed, so that the stability of snow removal work by the snow removal machine 10 can be enhanced.

  In addition, some snow-covered areas have hard snow-like parts that are frozen. When removing snow from a hard snow part, if the snow remover 10 is simply moved straight to remove snow, the upward reaction force generated at the left and right reversing augers 42 and 42 is large. The phenomenon is likely to occur. As a result, it is disadvantageous to improve straight running performance if the snowplow 10 fluctuates in the width direction.

  On the other hand, in order to remove the hard snow part while suppressing the lifting phenomenon of the left and right reversing augers 42, 42, a so-called one-sided work in which only the left half or the right half of the auger 23 is hung on the snow part. Often to do. That is, the snow-covered portion is scraped off in order from the end by the auger 23 by the one-side hanging operation.

  In the present embodiment, since the left and right reversing augers 42 and 42 are arranged on the outer side in the width direction than the left and right normal rotating augers 41 and 41, the phenomenon that the auger 23 as a whole is lifted by reaction force can be suppressed. Accordingly, since the straightness of the snow removal machine 10 during the snow removal work can be improved, the stability of the snow removal work can be improved.

  Thus, in this embodiment, it is possible to achieve both efficiency and stabilization of snow removal work by the auger type snow remover 10.

  As shown in FIGS. 2 and 4, the left and right forward rotating augers 41 and 41 and the left and right rotating augers 42 and 42 are each rotated to individually drive the respective augers 41, 41, 42, 42. The shafts 63, 63, 66, and 66 are connected by shear bolts 64, 64, 67, and 67, respectively.

  By providing each shear bolt 64, 64, 67, 67 individually, the load applied to each shear bolt 64, 64, 67, 67 can be distributed. For this reason, since each shear bolt 64, 64, 67, 67 can be reduced in size, the shear bolt 64, 64, 67, 67 can be easily replaced.

  Moreover, the left and right forward augers 41 and 41 and the left and right reverse augers 42 and 42 rotate in opposite directions. When the phenomenon of foreign matter biting by one of the forward and reverse augers 41, 41 occurs and the rotation of the one auger 41, 41 is likely to be impeded, the other auger 42, 42 rotates in the reverse direction. Therefore, it is easy to eliminate the foreign matter biting phenomenon. For this reason, the frequency of replacement of the shear bolts 64, 64, 67, 67 can be reduced by suppressing the occurrence of a foreign matter biting phenomenon.

  The auger type snow removal machine 10 of the present invention is suitable for a snow removal machine that drives at least the auger 23 by the engine 14.

DESCRIPTION OF SYMBOLS 10 auger type snow remover 21 auger housing 22 blower housing 23 auger 24 blower 41 forward rotation auger 42 reverse rotation auger 61 input shaft 62 reverse rotation drive shaft 63 rotation shaft for driving reverse rotation auger (revolution rotation shaft)
64 Shear bolt for reverse rotation 65 Drive shaft for normal rotation 66 Drives the normal rotation auger (rotary shaft for normal rotation)
67 Shear bolt for forward rotation Ra Forward direction (direction from top to bottom)
Rb Reverse direction (Reverse direction)
Wb Blower housing width

Claims (2)

Left and right forward rotating augers that rotate from top to front and lower during snow removal, and left and right rotating augers that rotate in the opposite direction with respect to the left and right forward augers are coaxially arranged in the width direction in the auger housing An auger type snowplow in which a blower housing is provided at the rear of the auger housing and at the center in the width direction, and the blower is provided in the blower housing.
The left and right forward augers are located over at least the entire width of the blower housing,
The auger type snow removal machine, wherein the left and right reversing augers are individually located on both sides of the left and right forward augers and are located only outside in the width direction with respect to the width of the blower housing.   2. The left and right forward rotating augers and the left and right rotating augers are respectively connected by shear bolts to respective rotating shafts for individually driving the respective augers. Ogre type snowplow.

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