JP2010150925A - Snowplow - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snowplow removing snow properly by moving a sled easily along a snow surface. <P>SOLUTION: A snowplow body 10 is provided with a supporting shaft 36 extendedly in the width direction of the snowplow A, and an intermediate part in the longitudinal direction of the sled 31 is swingingly mounted to the supporting shaft 36. A snow contact surface of the sled 31 has guide projections 33a, 33b extending in the longitudinal direction. A plane part 31a is formed at the front side rather than the supporting shaft 36 on the snow contact surface of the sled 31, and an inclined surface 31c is formed at the rear side from the supporting shaft 36 on the snow contact surface of the sled 31. The gradient of the inclined surface part 31c is steeper toward the rear side. A pair of moving wheels 32a, 32b are mounted to the supporting shaft 36. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a snowplow that includes a ridge that supports a snowplow body and that removes snow while sliding the ridge on a snow surface.

  Conventionally, a snow remover has been used when the road surface is exposed except for snow on the snow surface. Such a snow remover is provided with a snow remover having an auger that scrapes snow by rotating to the front of the snow remover main body that houses each device for driving the snow remover, such as an engine. An operation unit having a handle for operating the snowplow is provided at the rear of the main body. And the lower part of a snow remover main body is provided with the hook which supports a snow remover main body and makes it easy to move a snow remover by sliding on a snow surface.

  Also, some of these conventional snowplows have a cage fixed to the snowplow body. According to this, when the snowplow is moved by operating the handle, the auger position is set to the snow surface. It becomes difficult to follow along properly. For this reason, snowplows that can adjust the angle of the kite have also been developed (see, for example, Patent Document 1). In this snow remover, a saddle is provided on the lower side of the frame of the snow remover body that supports the axle of the wheel, and the front end of this saddle is attached to the lower rear part of the blower housing provided in the snow remover so that the angle can be adjusted. Yes. For this reason, snow removal work can be performed even if the amount of snow accumulation is large and the wheels are buried in snow.

JP 2006-193953 A

  However, with the snow remover described above, the angle of the kite can be adjusted, but the kite once adjusted in angle is held at that position until the angle is adjusted again. For this reason, when the snow surface is a rough surface such as an uneven surface or an inclined surface, it is difficult to operate the auger along the snow surface by operating the handle according to the snow surface.

  The present invention was made to address the above-described problems, and an object of the present invention is to provide a snow remover capable of performing proper snow removal work by making it easy to make the kite follow the snow surface. It is.

  In order to achieve the above-described object, the structural features of the snowplow according to the present invention are provided on the snowplow body, the snowplow provided on the front side of the snowplow body, and the rear side of the snowplow body. A snow removal machine having a control unit and a gutter that supports the main body of the snow removal machine, with a swing shaft provided on the snow removal machine body with the axial direction extending in the width direction of the snow removal machine, The middle part of the direction is swingably attached, and a flat part is formed on the front side part of the swinging shaft on the snow-contacting surface of the kite, and the rear side part of the swinging shaft on the snow-contacting surface of the kite is It is formed by two or more inclined surfaces or inclined curved surfaces that are inclined upward and smoothly continue, and the two or more inclined surfaces or inclined curved surfaces are formed by inclined surface portions that become steeper toward the rear side.

  In the snow remover configured as described above, the kite is swingably attached to a swing shaft provided in the snow remover body. For this reason, the snowplow body can be rotated up and down with respect to the kite in contact with the snow surface without applying a large force to the operation unit, and the relative position between the snow removal unit and the snow surface can be easily changed. . This facilitates snow removal work especially on uneven snow surfaces such as irregularities. In addition, since a flat part is formed on the front side of the rocking shaft on the snow-contacting surface of the kite, when the snow remover is moved on a flat snow surface, the weight of the snow remover is applied to this flat part. In this way, the snowplow can be moved smoothly by operating the operation unit.

  In addition, since two or more inclined surfaces or inclined curved surfaces that are inclined upward from the rocking axis on the snow-contacting surface of the kite are formed upward, the kite when moving the snowplow on the snow surface or asphalt road surface is used. The surface pressure at the time of contact with the snow surface or asphalt road surface is reduced, and the frictional resistance is reduced. In addition, when climbing the uphill of the snow surface from the asphalt road surface, by operating the operation unit while moving the center of gravity of the snowplow from the front side of the kite to the rear side, etc. The snowplow can be moved smoothly.

  According to this, especially when the rear side portion of the fence passes through the boundary portion between the asphalt road surface and the uphill slope of the snow surface, the movement becomes smooth and more effective. That is, the rear part of the fence is formed of two or more smoothly continuous inclined surfaces or inclined curved surfaces, and the rear part is steeper so that the center of gravity of the snow remover can be easily moved. And can smoothly pass through the boundary between the uphill slope and the snow surface.

  Another structural feature of the snowplow according to the present invention is that the snowplow main body is provided with a pair of left and right moving wheels in a state where the axle is aligned with the axis of the swing shaft. According to this, the structure in the case where the axle for supporting the pair of moving wheels and the swinging shaft for supporting the eaves is provided in the snow remover body becomes simple, and the entire snow remover can be made compact. Further, the provision of the moving wheels facilitates the operation when the snowplow is moved on a road surface other than the snow surface.

  Still another structural feature of the snowplow according to the present invention is that an inclined surface portion having a shorter length in the front-rear direction than the inclined surface portion provided on the rear side of the fence is provided at the front portion of the plane portion of the fence. It is in.

It is the side view which showed the snow remover which concerns on one Embodiment of this invention. It is the top view which showed the snow removal machine. It is the front view which showed the snowblower. FIG. 4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a cross-sectional view taken along 4-4 of FIG. FIG. 5 is a partially cutaway cross-sectional view showing a state where the scissors are attached and a state where the lock mechanism is locked. FIG. 6 is a partially cutaway cross-sectional view showing a state where the lock mechanism of FIG. 5 is unlocked. It is the side view which showed the state which adjusts the handle | steering-wheel of a snowblower, and the state which a cage | basket swings. It is the side view which showed the state which folded the snowblower. It is the side view which showed the state in which an operator operates a snowblower. It is the side view which showed the state which a snowblower moves on an inclined surface. It is a partially notched top view which showed the scissors which concern on other embodiment. It is the front view which showed the state which attaches the collar of FIG. 11, (a) is the state which installed the collar below the support shaft, (b) is the state which lifted the collar, (c) is engaged with the engaged part. The state which attached the collar by engaging the joint part is shown.

  Hereinafter, a snowplow according to an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show a snowplow A according to the present invention. The snowplow A is provided at the snowplow main body 10, a snowplow 20 provided at the front of the snowplow main body 10, a support 30 that supports the snowplow main body 10, and a rear part of the snowplow main body 10. It is comprised with the operation part 40. FIG. The snowplow main body 10 includes an outer part 11 formed in a box shape having a quadrilateral plan view and a substantially fan-shaped side surface, and a lower edge part to a rear edge part on both side surfaces (only one is shown) of the outer part 11. And a pair of bent support frames 12 for supporting the portion.

  Various devices necessary for driving the snowplow A, such as an engine, are disposed inside the outer shell 11 (not shown), and a fuel tank 13 is disposed on the rear upper surface of the outer shell 11. Yes. A fuel supply port is formed at the center of the upper surface of the fuel tank 13, and a tank cap 13a is detachably attached to the fuel supply port. Further, from the rear side portion of the right side surface of the outer shell portion 11 (the right side surface in the state of FIGS. 2 and 3, the left and right direction will be described as the direction when the snowplow A is viewed from the front side). The recoil handle 14 protrudes outward.

  The recoil handle 14 is connected to a recoil starter via a recoil rope. When the recoil handle 14 is pulled, the recoil starter rotates the crankshaft to start the engine. In addition, the devices disposed inside the outer shell 11 include a device for supplying fuel and air to the engine, an ignition device, an exhaust device, a mechanism for transmitting the driving force of the engine, and a mechanism for transmitting the driving force. There are clutches for connecting and disconnecting.

  The snow removal unit 20 includes an impeller 21 connected to an impeller shaft through which engine driving force is transmitted via a crankshaft, an auger 23 provided in an auger case 22, a chute 24, and the like. The auger case 22 has a shape excluding a substantially half portion along the circumferential direction of the circumferential surface of the substantially cylindrical body whose both end surfaces are closed, and the central portion of the outer circumferential surface portion 22a is the outline of the snowplow body 10. It is connected to the front end of the part 11. In addition, a shaft 25 is stretched around the center of both side surface portions 22b and 22c of the auger case 22 so as to be rotatable around the axis, and the auger 23 is attached to the shaft 25.

  The auger 23 is configured by assembling a plurality of spiral rotary blades 23a and a plurality of disk-shaped support plates 23b that support the rotary blades 23a, and rotates in accordance with the rotation of the shaft 25 so that the snow surface When the snow is caught, the snow is pushed into the auger case 22. Moreover, the front end side portion of the impeller shaft extends toward the front of the impeller 21, and a worm gear 25a is connected to the front end side thereof. The impeller shaft is connected to the central portion of the shaft 25 through the worm gear 25a. That is, the worm gear 25a transmits the rotational force of the impeller shaft extending in the front-rear direction to the shaft 25 extending in the left-right direction while changing the direction.

  The impeller 21 is composed of a plurality of rotary blades that rotate about the impeller shaft, and is arranged at the center of the rear part of the auger case 22. A concave portion protruding rearward is formed in a portion of the outer peripheral surface portion 22a of the auger case 22 connected to the outer portion 11 of the snowplow main body 10, and the impeller 21 is disposed in the concave portion. A chute 24 extending upward is provided on the left side portion of the upper surface of the auger case 22 where the impeller 21 is disposed.

  The chute main body 24a constituting the main body portion of the chute 24 is configured by a curved cylindrical body, and a rectangular frame-shaped discharge port portion 24b is attached to the upper end portion of the chute main body 24a. The chute body 24a is connected to an upper portion of a cylindrical base portion 22d protruding from the upper surface of the auger case 22 so as to be rotatable about the axis and detachable from the base portion 22d. Further, the discharge port portion 24b is connected to the chute body 24a so as to be rotatable in the vertical direction around a support shaft 24c provided at the upper end portion of the side surface where the curvature of the chute body 24a protrudes.

  A rod-shaped L-shaped lever 26 that is rotatable in the vertical direction about the support shaft 26 a is attached to the approximate center in the vertical direction on the side surface from which the curvature of the chute body 24 a protrudes. A rod-like connecting lever 27 that is rotatable about the support shaft 26b is connected to the shaft 26a side portion. Further, an inverted U-shaped engagement piece 28 is provided in the vicinity of the support shaft 24c on the upper surface of the discharge port portion 24b, and an upper end portion of the coupling lever 27 is provided above the engagement piece 28. Are connected via a support shaft 28a in a rotatable state.

  Therefore, by rotating the L-shaped lever 26 to the left and right, the discharge port portion 24b can be rotated to the left and right together with the chute body 24a, and the opening direction of the discharge port portion 24b can be changed to the left and right direction. Further, by rotating the L-shaped lever 26 up and down, the direction of the opening of the discharge port portion 24b can be changed up and down by a predetermined angle. Further, the chute 24 can be removed from the base 22d by lifting it upward.

  The support unit 30 includes a rod 31 and a pair of moving wheels 32a and 32b (see FIGS. 5 and 6). As shown in FIG. 4, the flange 31 is formed of a plate body that is substantially square in plan view and curved in a substantially bow shape in side view, and is formed in a flat shape located in a portion from the center to the front side. The flat surface portion 31a, the inclined surface portion 31b formed at the front portion of the flat surface portion 31a, and the inclined surface portion 31c formed at the rear portion of the flat surface portion 31a. The inclined surface portion 31b is bent at a predetermined angle from the front end of the flat surface portion 31a and extends substantially straight forward and obliquely forward, and the inclined surface portion 31c is gently curved from the rear side of the flat surface portion 31a and extends obliquely rearward. Yes. The inclination of the inclined surface portion 31c increases toward the rear side. The length of the inclined surface portion 31c in the front-rear direction is longer than the length of the inclined surface portion 31b in the front-rear direction.

  And the wide protrusion which protrudes upwards and extends in the front-back direction is formed in the part which kept the predetermined space | interval from the side edge part in the both sides of the left-right direction of the collar 31, and the guide groove which consists of a recessed part on the lower surface 31d and 31e are formed. Further, a notch portion 31f having a wide width in the left-right direction is formed in a portion corresponding to the space between the guide grooves 31d and 31e in the front edge portion of the flange 31. Furthermore, guide ridges 33a and 33b, which are rods of the present invention, are attached along both left and right edges of the lower surface of the collar 31. The guide protrusions 33a and 33b are formed to be shorter than the length of the flange 31 in the front-rear direction, and the guide protrusions 33a and 33b are formed on a portion excluding the substantially half of the front surface side of the inclined surface portion 31b and the rear end side portion of the inclined surface portion 31c. It is fixed by welding.

  Then, on both sides of the center portion in the front-rear direction on the upper surface of the flange 31, a connecting portion 34 comprising a pipe-like rocking bearing portion 34a and a fixed piece 34b, a pipe-like rocking bearing portion 35a and a fixed piece 35b, respectively. The connection part 35 which consists of is fixed. The fixing pieces 34b and 35b are each configured by a plate bent in an L shape, and the horizontal piece is fixed to the upper surface of the flange 31 with the vertical piece positioned on the outside of the flange 31. Then, the rocking bearing part 34a with the axial direction facing left and right is fixed in a state of passing through the center of the vertical piece of the fixed piece 34b, and the rocking bearing part 35a with the axial direction facing left and right is the vertical piece of the fixed piece 35b. It is fixed in a state of penetrating through the center. The connecting portions 34 and 35 are located in the vicinity of the front end portion of the inclined surface portion 31c.

  Further, support pieces 36a and 36b each provided with a support hole from the central portion of the pair of support frames 12 of the snowplow body 10 extend downward as shown in FIGS. 5 and 6, respectively. A support shaft 36 as a swing shaft of the present invention is spanned over the support hole 36b. The eaves 31 are supported in a swingable manner by the snowplow main body 10 by inserting a support shaft 36 through the swing bearing portions 34a and 35a. Each of the moving wheels 32a and 32b includes a ring-shaped wheel body, a bearing portion having a bearing hole formed in the center, and a plurality of spokes extending radially from the bearing portion toward the wheel body. The support shaft 36 is inserted into the bearing hole and is disposed on both sides of the flange 31.

  A lock mechanism attachment piece 36c extending obliquely downward toward the vicinity of the support shaft 36 is attached to the inner surface of the support piece 36a, and a lock mechanism 37 is provided on the lock mechanism attachment piece 36c. The lock mechanism 37 can be engaged between a shaft portion 37a attached to the lock mechanism attachment piece 36c with its axial direction facing forward and backward, and a spoke of the moving wheel 32a provided rotatably at the tip of the shaft portion 37a. A locking piece 37b, a spring member 37c for urging the locking piece 37b toward the moving wheel 32a, and a brake lever 37d provided on the shaft portion 37a while being rotated together with the locking piece 37b. ing.

  Therefore, the locking piece 37b is urged toward the moving wheel 32a by the elastic force of the spring member 37c and engages with the moving wheel 32a to rotate the moving wheel 32a as shown in FIG. To stop. The lower end of the brake lever 37d is connected to the tip of the wheel brake wire 38 extending from the operation unit 40, and the wheel brake wire 38 is connected to the operation unit 40 against the elastic force of the spring member 37c. As shown in FIG. 6, the locking piece 37b moves away from the moving wheel 32a side together with the brake lever 37d to make the moving wheel 32a rotatable.

  The operation unit 40 includes a handle 41 connected to both upper ends of the pair of support frames 12, an operation lever 42, various interlocking mechanisms described later, and the like. The handle 41 is formed of a pipe having a substantially U-shape in plan view and an L-shape in side view, and the front side portions are parallel to the upper rear portions of the pair of support frames 12 and obliquely upward at the rear. The side portions 41a and 41b extend, and the rear side portion is formed of a substantially U-shaped gripping portion 41c that is bent from the rear end portions of the side portions 41a and 41b and extends upward. Further, the handle 41 is connected to the pair of support frames 12 through a pair of left and right connection mechanisms 43 (only one of which is shown) so as to be rotatable in the vertical direction.

  The connection mechanism 43 includes a support plane portion 43a having a wide side surface formed at the upper end portion of the support frame 12, and a supported plane portion 43b having a wide side surface by crushing the front end portions of the side portions 41a and 41b. It is a mechanism to connect. A shaft hole is formed at the boundary portion of the support plane portion 43a with the support frame 12, and an arcuate guide hole 43c centered on the shaft hole is formed at the rear portion of the support plane portion 43a. . Moreover, the shaft hole is formed in the front-end | tip part and rear-end part of the to-be-supported plane part 43b, respectively, and the shaft member 43d is inserted into the shaft hole of the front-end | tip part of the to-be-supported plane part 43b, and the shaft hole of the support-plane part 43a. By inserting the handle 41, the handle 41 is connected to the pair of support frames 12 so as to be rotatable in the vertical direction.

  And the fastening member 43e which consists of a volt | bolt and a nut is attached to the shaft hole of the rear-end part of the to-be-supported plane part 43b, and the guide hole 43c of the support plane part 43a. By loosening the tightening member 43e, as shown in FIG. 7, the handle 41 can be rotated in the vertical direction around the shaft member 43d. By tightening the tightening member 43e, the handle 41 is brought to its position. Can be fixed. In this case, the rotatable angle of the handle 41 is determined by the length of the guide hole 43c in the arc direction around the shaft member 43d.

  FIG. 7 also shows a state in which the collar 31 swings. Further, when the snowplow A is stored in a storage or the like, the shaft hole of the rear end portion of the supported flat surface portion 43b is removed from the tightening member 43e, so that the handle 41 is pivoted as shown in FIG. It can be folded forward on the upper side of the snowplow body 10 by rotating forward about the member 43d. At that time, the snowplow A can be folded more compactly by removing the chute 24 from the base portion 22d and tilting it down.

  The operation lever 42 is substantially the same shape as the rear side portion of the handle 41, and is a slightly smaller and thinner bar than the rear side portion of the handle 41. The operation lever 42 includes side portions 42a and 42b on both sides and a grip portion 42c. It is configured. The operating lever 42 is attached to the handle 41 via a pair of connecting members 44 and 45 so as to overlap the rear side portion of the handle 41 by a downward pressing operation. The connecting member 44 includes a fixed piece 44a fixed to the central portion of the side portion 41a, a rotating piece 44b attached to the rear side of the side portion 41a so as to be rotatable around one end side, and a fixed piece 44a. And a coil spring 44c that spans between the free end side of the rotary piece 44b and biases the free end of the rotary piece 44b toward the fixed piece 44a.

  Further, an auger brake wire 46 is inserted into a portion of the fixed piece 44a that protrudes to the inner side of the side portion 41a, and an end portion of the auger brake wire 46 is locked near the free end of the rotating piece 44b. ing. And the edge part of the side part 42a in the operation lever 42 is being fixed to the rear surface of the rotation piece 44b. The connection member 45 includes a fixed piece 45a fixed to the center portion of the side portion 41b, and a pair of rotating pieces 45b and 45c attached to the rear side of the side portion 41b at a distance from the fixed piece 45a. The coil spring 45d spans between the fixed piece 45a and the rotating piece 45c.

  The fixed piece 45a is formed of a wide, substantially rectangular plate having a notch hole for inserting the throttle wire 47 and a notch hole for inserting the wheel brake wire 38. The fixing piece 45a is fixed to the upper portion of the side portion 41b so as to protrude from the upper portion of the side portion 41b, and the portions in which both cutout holes are formed protrude to both sides of the side portion 41b. .

  The rotating pieces 45b and 45c are substantially L-shaped plate members disposed on the inner side and the outer side of the side portion 41b with the side portion 41b interposed therebetween, and are disposed on the outer side of the side portion 41a. The rotating piece 45c is formed with three holes at intervals, and the rotating piece 45b disposed inside the side portion 41b is formed with two holes at intervals. The pair of rotating pieces 45b and 45c are attached to both sides of the side portion 41b in a state of being able to rotate in the vertical direction by inserting a support shaft through one hole portion. Then, the end portion of the wire portion of the throttle wire 47 is engaged with the other hole portion of the rotating piece 45b.

  Further, the end of the wire portion of the wheel brake wire 38 is locked in the central hole of the rotating piece 45c. The coil spring 45d is attached in a state in which both ends are engaged with the other hole of the rotating piece 45c and the fixed piece 45a. Further, the end of the side portion 42b of the operation lever 42 is fixed to the rear surface of the rotating piece 45b. An L-shaped parking lever 48 is provided on the rear surface of the rotating piece 45c, and the rear portion of the parking lever 48 is engaged with the lower portion of the side portion 42b.

  Therefore, the operation lever 42 is biased upward by the coil spring 44c elastic force and is biased upward by the coil spring 45d via the parking lever 48 biased upward by the elastic force of the coil spring 45d. To leave the handle 41. When the grip portion 42c of the operation lever 42 is pressed against the grip portion 41c side of the handle 41, the parking lever 48 also moves to the grip portion 41c side together with the operation lever 42, and the auger brake wire 46, throttle wire 47 and wheel brake wire are moved. Each 38 is pulled backwards. The tip of the auger brake wire 46 extends in the vicinity of a clutch that connects and disconnects the driving force transmission mechanism between the crankshaft and the impeller shaft of the engine.

  And the brake mechanism provided with the brake pad which stops rotation of the auger 23 by contact | abutting to the rotary body by the side of the impeller shaft in a clutch is connected to the front-end | tip part of the auger brake wire 46. The tip of the throttle wire 47 extends to the vicinity of the engine and is connected to an accelerator mechanism that adjusts the engine speed. The wheel brake wire 38 is connected to the lock mechanism 37 as described above. Therefore, when the auger brake wire 46, the throttle wire 47, and the wheel brake wire 38 are pulled rearward, the auger 23 and the moving wheel 32a become rotatable, and the engine increases the rotational speed.

  Further, the parking lever 48 can be operated independently of the operation lever 42 so that the moving wheel 32a can be rotated. For this reason, the snowplow A can be moved by pressing only the parking lever 48 against the gripping portion 41c without driving the engine. In addition, the snowplow A can be moved in an idling state without stopping the driving of the engine by pressing only the parking lever 48 toward the grip portion 41c while the engine is driven. In addition, a start switch SW for switching the snowplow A to a startable state and a non-startable state is provided on the rear surface of the outer portion 11.

  In this configuration, when the snowplow A is operated, first, as shown in FIG. 9, after holding the grip 41c of the handle 41, the grip 42c of the operation lever 42 is held by the grip 41c of the handle 41. The moving wheel 32a is brought into a rotatable state by pressing against the side. Next, the snow removal machine A is moved to the snow surface by rotating the wheels 32a, 32b for movement on the road surface a by operating the handle 41 left and right while pushing the handle 41. In this case, as shown in FIG. 10, when the path for moving the snowplow A is changing from the road surface a to the inclined snow surface b, the snowplow A is pushed toward the snow surface b. The inclined surface portion 31b of the kite 31 slides on the snow surface b, and the inclined surface portion 31c remaining on the road surface a advances while contacting the curved rear portions of the guide protrusions 33a and 33b to the road surface a.

  For this reason, the frictional resistance from the road surface a and the snow surface b applied to the bottom surface of the fence 31 is reduced, and the snowplow A can be easily moved. At this time, since the eaves 31 are swingable with respect to the snowplow main body 10, the snowplow main body 10 can be operated even if the eaves 31 are tilted up and down by contacting the road surface a or the snow surface b. The snow remover A can be moved while being held in a posture that is easy for a person to operate. Then, after the snowplow A is moved to a place where snow removal work is performed, the start switch SW is operated to the on side and the recoil handle 14 is pulled to start the engine. Furthermore, after the discharge port portion 24b of the chute 24 is directed in a predetermined direction, for example, the side of the snowplow A, the grip portion 42c of the operation lever 42 is pressed again toward the grip portion 41c of the handle 41.

  As a result, the moving wheel 32a and the auger 23 become rotatable again, and the rotational speed of the engine gradually increases. Then, the clutch is connected and the impeller 21 and the auger 23 start to rotate. The rotation of the auger 23 causes the snow on the snow surface b to be scraped into the auger case 22, and the snow scraped into the auger case 22 is blown up to the upper side of the chute 24 by the rotation of the impeller 21. The snow blown up to the upper side of the chute 24 is discharged to the side of the snow removal machine A from the opening of the discharge port portion 24b.

  Then, the snow removal machine A is moved on the snow surface b while the operation amount of the operation lever 42 is changed according to the state of the snow surface, and the snow removal work is sequentially performed. In this case, the snow removal machine A can be easily moved by sliding the raft 31 in contact with the snow surface b, and the guide grooves 31d and 31e and the guide protrusions 33a and 33b provided on the lower surface of the raft 31 are guided. As a result, the snowplow A moves forward in an appropriate state without skidding. Further, when the snow surface b changes from a horizontal surface to an inclined surface, since the inclined surface portions 31b and 31c are formed at the front portion and the rear portion of the kite 31, respectively, as in the state shown in FIG. A can be advanced smoothly. In particular, since the inclined surface portion 31c is smoothly curved, it can smoothly pass through the corner portion without entering the corner portion of the snow surface b.

  Moreover, even if the snow surface b has irregularities and the gutter 31 swings up and down, the snowplow body 10 can be maintained in an easy-to-operate posture. When stopping the snow removal work, the operator releases the operation lever 42 to release the pressing operation of the operation lever 42. As a result, the clutch is disconnected and the transmission of the driving force from the engine to the auger 23 is cut off. At the same time, the brake pads of the brake mechanism come into contact with the outer peripheral surface of the rotating body of the clutch to rotate the rotating body. Stop. As a result, the auger 23 is prevented from continuing to rotate due to inertia. The locking piece 37b of the lock mechanism 37 is engaged between the spokes of the moving wheel 32a to make the moving wheel 32a unrotatable. Then, when stopping the driving of the engine, the start switch SW is operated to the off side.

  Thus, in the snowplow A according to the present embodiment, since the eaves 31 are swingably attached to the support shaft 36 of the snowplow main body 10, the snowplow main body 10 can be mounted without applying a large force to the handle 41. It can rotate in the vertical direction with respect to the kite 31 in contact with the snow surface b. As a result, the relative position between the auger 23 and the snow surface b can be easily changed, and the snow removal work on the snow surface b having undulations such as irregularities is facilitated. Further, since the guide protrusions 33a and 33b extending in the front-rear direction are provided on the snow contact surface of the kite 31, the friction resistance when moving the snow removal machine A on the snow surface b is reduced, and the snow removal machine A moves smoothly. In particular, the snow removal machine A is effective when climbing the uphill of the snow surface b from the road surface a such as asphalt.

  Further, by providing the guide grooves 31d and 31e and the guide protrusions 33a and 33b, the straightness of the snow removal machine A is improved, so that the snow removal work and the snow removal machine can be easily moved. Further, since the flat portion 31a is formed in the front side portion of the snow-contacting surface of the kite 31 with respect to the support shaft 36, when the snow remover A is moved on the flat snow surface b, the snow remover is moved to the flat portion 31a. By operating the handle 41 so as to apply the weight of A, the snowplow A can be moved smoothly. Further, since the inclined surface portion 31c inclined upward is formed on the rear side portion of the support surface 36 on the snow-contacting surface of the eave 31, the snow remover A is changed at a portion that changes from a flat surface on the snow surface b or the road surface a to an inclined surface. Move smoothly.

  In particular, when the snowplow A is climbed uphill from the road surface a to the snow surface b, the handle 41 is operated so as to move the weight of the snowplow from the front side to the rear side of the fence 31. Thus, the snow blower A can be moved smoothly. Further, since the inclined surface portion 31c of the kite 31 is formed in a smooth continuous curved surface and becomes steeper toward the rear side, it becomes easy to move the center of gravity of the snow removal machine A. The snow removal machine A has the road surface a and the snow surface b. Smoothly pass the boundary with the uphill.

  In particular, it is more effective when the inclined surface portion 31c of the kite 31 passes through a boundary portion between the road surface a and the uphill slope of the snow surface b. In addition, since the pair of moving wheels 32a and 32b are provided at the lower part of the snowplow main body 10, when the snowplow A is moved on the road surface a, the lower surface of the gutter 31 is not required to contact the road surface a. Further, since the moving wheels 32a and 32b are attached to the support shaft 36 that supports the eaves 31, the structure for attaching the eaves 31 and the moving wheels 32a and 32b to the snow remover main body 10 is simplified, and the entire snow removal machine A is provided. Can be configured compactly.

  11 and 12 show a gutter 51 provided in a snowplow according to another embodiment of the present invention. In this flange 51, a pair of connecting portions 54 (only one is shown) composed of a pipe-like rocking bearing portion 54a and a fixed piece 54b are formed separately from the flange 51 and attached to the support shaft 56 in advance. ing. A pair of hook-like engaged portions 55a (only one is shown) is provided on the upper surface of the horizontal piece of the connecting portion 54 with a space in the front-rear direction. Engagement members 53 having a pair of rotary engagement portions 52 that can be engaged with the engaged portions 55a are attached to both sides of the engagement members 53a.

  Each of the engaging portions 52 is a lever portion 52a rotatably attached to the upper surface of the flange 51, and a U-shaped engagement that is rotatably connected to both sides of the substantially central portion of the lever portion 52a and engageable with the engaged portion 55a. It is comprised with the piece 52b. The engaging portion 52 and the engaged portion 55a constitute the attaching / detaching mechanism of the present invention. When attaching the gutter 51 to the snowplow, as shown in FIG. 12A, the gutter 51 is placed below the snowplow body, and the engaging portion 52 of the gutter 51 is connected to the support shaft 56. From the state of being positioned below the portion 54, the hook 51 is lifted with the tip of the engagement piece 52b facing upward, so that the engagement piece 52b is engaged as shown in FIG. It is located above the joint portion 55a.

  Next, after engaging the engagement piece 52b with the engaged portion 55a, the distal end portion of the lever portion 52a is pressed against the upper surface side of the flange 51 to rotate, thereby causing the flange 51 to engage with the engagement member 53 and the connecting portion. It can be attached to the support shaft 56 via 54. In addition, when removing the gutter 51 from the snowplow, the above-described operation for attachment is performed in reverse. In addition, when the lever portion 52a is rotated to the upper surface side of the flange 51 in a state where the engaging piece 52b is engaged with the engaged portion 55a, the peak point provided in the middle of rotation is used as a boundary, and more When it rotates to the upper surface side of the ridge 51, it is urged toward the upper surface side of the ridge 51, and is configured to be urged away from the upper surface of the ridge 51 until the peak point is exceeded.

  Therefore, when rotating the lever portion 52a, a force against the urging force is applied until the peak point is reached, and when the peak point is exceeded, the lever portion 52a rotates to the upper surface side of the rod 51 by its own urging force. Then, the engaging piece 52b is fixed to the engaged portion 55a. When the engagement between the engaging piece 52b and the engaged portion 55a is released, the reverse is true. According to this, since a tool or the like is not necessary and only a simple operation with a bare hand is required, the attachment / detachment of the bag 51 is facilitated. Moreover, the structure of the part other than that of this reed 51 is the same as that of the reed 31 mentioned above, and the structure of the snow removal machine provided with this reed 51 is also the same as the above-mentioned snow remover A.

  Moreover, the snowplow according to the present invention is not limited to the embodiment described above, and can be implemented with appropriate modifications within the technical scope of the present invention. For example, in the embodiment described above, the snow removal machine A is provided with the moving wheels 32a and 32b, but the moving wheels 32a and 32b can be omitted. In this case, when the snowplow A is moved on the road surface a, the guide protrusions 33a and 33b of the eaves 31 and 51 are brought into contact with the road surface a. Also by this, the snowplow A can move in a state where the frictional resistance from the road surface a is reduced.

  Further, only one moving wheel may be provided, or three or more wheels may be provided. Furthermore, in the above-described embodiment, the pair of guide protrusions 33a and 33b are provided, but this guide protrusion may be one or may be three or more. Moreover, although the inclined surface part 31c of the eaves 31 and 51 is formed in the smooth circular-arc-shaped inclined surface, it can replace with this and can also form in a smooth inclined surface as a whole by joining a planar inclined surface. . Also by this, the same effect as the snowplow A described above can be obtained.

  Furthermore, the attachment / detachment mechanism is not limited to the attachment / detachment mechanism including the engaging portion 52 and the engaged portion 55a, and any other attachment / detachment mechanism may be used as long as it can be attached / detached with bare hands. As such an attaching / detaching mechanism, for example, a screw rod is provided on the upper surface of the flange, an insertion hole through which the screw rod can be inserted into the horizontal piece in the fixed piece of the connecting portion, and the screw rod in a state in which the insertion hole is inserted, There is an attaching / detaching mechanism or the like that can attach and detach the scissors by removably screwing a screw provided with a planar gripping part.

  DESCRIPTION OF SYMBOLS 10 ... Snowblower main body, 20 ... Snow removal part, 31, 51 ... Hail, 31a ... Plane part, 31b, 31c ... Inclined surface part, 32a, 32b ... Wheel for movement, 34, 35, 54 ... Connection part, 36, 56 ... Support shaft, 40... Operation unit, A.

Claims (3)

A snowplow comprising a snowplow main body, a snowplow provided on the front side of the snowplow main body, an operation part provided on the rear side of the snowplow main body, and a gutter that supports the snowplow main body Because
An intermediate part in the front-rear direction of the kite is swingably attached to a swing shaft provided in the snow remover body with the axial direction extending in the width direction of the snow remover, and the snow contact surface of the kite is Two or more inclined surfaces that form a flat portion on the front side of the rocking shaft and incline the rear side portion of the snow-contacting surface of the kite from the rocking shaft upward and smoothly continue. Alternatively, the snowplow is formed by an inclined curved surface, and the two or more inclined surfaces or the inclined curved surface is configured by an inclined surface portion that becomes steeper toward the rear side.   The snowplow according to claim 1, wherein the snowplow body is provided with a pair of left and right moving wheels in a state where the axle is aligned with the axis of the swing shaft.   The snow removal machine of Claim 1 or 2 which provided the inclined surface part whose length of the front-back direction is shorter than the said inclined surface part provided in the rear part side of the said collar in the front part of the said plane part of the said fence.

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