JP2008196241A - Snowplow - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snowplow capable of stopping the rotation of an auger quickly when shutting off the transmission of output of an engine to the auger. <P>SOLUTION: This snowplow A is provided with an operation lever 52 for operating it selectively on either of a driving force transmission side for connecting an automatic centrifugal clutch 20 to transmit driving force of the engine 11 to the auger 33 and a driving force shutting-off side for releasing the automatic centrifugal clutch 20 to shut off the transmission of driving force of the engine 11 to the auger 33. This snowplow A is also provided with a brake pad 26a for braking the rotation of a clutch outer 23 of the automatic centrifugal clutch 20 and an auger brake wire 27 for braking the rotation of the clutch outer 23 by pressing the brake pad 26a against the clutch outer 23 of the automatic centrifugal clutch 20 in the interlocking relationship with the operation of the operation lever 52. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a snowplow that can transmit the driving force of an engine to an auger or interrupt the transmission by switching the state of a clutch between connection and disconnection.

  2. Description of the Related Art Conventionally, there are apparatuses such as a snowblower and a lawn mower that perform a predetermined process by rotating a helical auger and a rotary blade by driving an engine. In such a device, by switching the clutch, the engine driving force is transmitted to the rotating blade to rotate the rotating blade, or the engine driving force is not transmitted to the rotating blade to rotate the rotating blade. There is a lawn mower that can be stopped (for example, see Patent Document 1). The lawn mower includes a centrifugal clutch member having a rotor connected to the output shaft of the internal combustion engine and an outer drum connected to the drive shaft of the drive system.

The centrifugal clutch member connects the output shaft of the internal combustion engine and the drive shaft of the drive system via the rotor and the outer drum when the output of the internal combustion engine reaches a predetermined value or more. As a result, the output of the internal combustion engine is transmitted to the drive system, and the rotary blade of the drive system rotates. Further, when the output of the internal combustion engine becomes equal to or less than a predetermined value, the centrifugal clutch member cuts off between the output shaft of the internal combustion engine and the drive shaft of the drive system, and stops the rotation of the rotary blade.
JP 2005-328834 A

  However, in the lawn mower described above, even if the output of the internal combustion engine decreases and the centrifugal clutch is disengaged, the rotary blade of the drive system continues to rotate unnecessarily due to the inertial force. In addition, when a mechanism equipped with this centrifugal clutch is used in a snowplow, the auger of the snowplow continues to be rotated in the same manner as the rotary blade of the lawn mower.

  The present invention has been made to address the above-described problems, and an object of the present invention is to provide a snow remover capable of quickly stopping the rotation of the auger when the transmission of the engine output to the auger is interrupted. That is.

  In order to achieve the above-described object, the construction features of the snowplow according to the present invention include a driving force transmission side that connects a clutch provided with a rotating body and transmits the driving force of the engine to the auger via the rotating body. An operation for selectively transmitting or shutting off the driving force of the engine to the auger by selectively operating either one of the driving force cutoff side to cut off the transmission of the driving force of the engine to the auger by disengaging the clutch A stop mechanism that stops rotation of the rotor, and a linkage that causes the stop mechanism to stop the rotation of the rotating body in conjunction with the operation of the operating element when the operating element is operated to the drive force cutoff side. And a mechanism.

  In the snow remover configured as described above, when the transmission of the engine driving force to the auger is interrupted, the rotation of the rotating body that transmits the engine driving force to the auger is always restrained. Rotation can be avoided. In addition, transmission of the driving force of the engine to the auger can be cut off only by operating one operating element, and at the same time, the rotation of the rotating body can be stopped by the stopping mechanism, so that operability is improved.

  In addition, other structural features of the snowplow according to the present invention include at least one moving wheel, a lock mechanism that stops rotation of the moving wheel, and when the operating element is operated to the driving force transmission side. And a lock release mechanism for releasing the stopping of the rotation of the moving wheel by the lock mechanism in conjunction with the operation of the operation element. According to this, the clutch is connected to enable the transmission of the driving force of the engine to the auger, and at the same time, the state in which the movement wheel is prevented from rotating by the lock release mechanism is released. For this reason, the start of transmission of the driving force of the engine to the auger and the release of the lock by the lock release mechanism need only be operated by one operator, and the operability is improved.

  Still another structural feature of the snowplow according to the present invention is that it can advance and retreat with respect to the snow surface, and a protrusion that brakes the snowplow by being stabbed into the snow surface, and the operation element is operated to the drive force cutoff side. And a braking mechanism that brakes the snowplow by inserting the protrusion into the snow surface in conjunction with the operation of the operation element. According to this, when the transmission of the driving force of the engine to the auger is cut off, the protrusion is stabbed into the snow surface by the operation of the braking mechanism and the snow blower is braked. The transmission of the driving force of the engine to the vehicle and the braking of the snowplow can be performed at the same time, improving the operability. Moreover, the braking force during parking is further improved by using the braking mechanism and the locking mechanism in combination.

  Still another structural feature of the snowplow according to the present invention is that when at least one moving wheel, a lock mechanism that stops rotation of the moving wheel, and the operating element is operated to the driving force transmission side, A lock release mechanism that releases the stopping of the rotation of the moving wheel by the lock mechanism in conjunction with the operation of the operation element, and when the braking mechanism brakes the snowplow, the lock mechanism stops the rotation of the moving wheel. The brake mechanism and the lock mechanism are interlocked so that the lock mechanism does not stop the rotation of the moving wheel when the brake mechanism is not braking the snowplow. According to this, since a part of the interlocking mechanism that interlocks the brake mechanism, the lock mechanism, and the operation element can be made common, the interlocking mechanism can be simplified.

  Still another structural feature of the snowplow according to the present invention is that a throttle operating piece for changing the driving force of the engine is provided, and when the operating element is operated to the driving force transmitting side, the throttle operating piece is The throttle operation piece can be operated in conjunction with the operation of the operation element so that when the operation force is increased and the operation element is operated to the drive force cutoff side, the throttle operation piece reduces the engine drive force. It is in. According to this, when the operating element is operated to the driving force cutoff side, the driving force of the engine becomes small and the engine enters an idle state. For this reason, when the snow removal work is stopped or when the snow remover is moved, it is possible to make the engine sound quieter and quieter.

  Still another structural feature of the snowplow according to the present invention is that when the clutch includes a restraining mechanism and the clutch is disengaged and the transmission of the driving force of the engine to the auger is cut off, the rotating body rotates. It is to be restrained. As a clutch in this case, for example, an electromagnetic clutch can be used. According to this, since it is not necessary to separately provide a stopping mechanism that is a separate body from the clutch, the structure becomes simple.

  Still another structural feature of the snowplow according to the present invention is that when an automatic centrifugal clutch provided with a rotating body is connected by a predetermined output of the engine, the driving force of the engine is transmitted to the auger via the rotating body. When an operating element that adjusts the driving force of the engine according to the operation amount, a stop mechanism that stops the rotation of the rotating body, and the operating element are operated to reduce the driving force of the engine to a predetermined output or less, In other words, the stopping mechanism is provided with an interlocking mechanism that stops the rotation of the rotating body in conjunction with the operation of the operation element.

  According to this, when the automatic centrifugal clutch is disengaged by operating the operating element to reduce the driving force of the engine below a predetermined output, the rotation of the rotating body that transmits the driving force of the engine to the auger is stopped. It is possible to avoid rotating the rotating body and the auger in vain. Further, the transmission of the engine driving force to the auger can be cut off by operating only one operating element, and at the same time, the rotation of the rotating body can be stopped by the stopping mechanism, thereby improving the operability. Further, by transmitting the driving force of the engine to the auger via the automatic centrifugal clutch, the arrangement height of the engine and the auger can be made substantially the same. For this reason, both the engine and the auger can be arranged at a low position, and the center of gravity of the snowplow can be lowered.

  Still another structural feature of the snowplow according to the present invention is that at least one moving wheel, a lock mechanism for stopping rotation of the moving wheel, and operation of the operator when the automatic centrifugal clutch is connected. And a lock release mechanism that releases the stopping of the rotation of the moving wheel by the lock mechanism. According to this, the clutch is connected to enable the transmission of the driving force of the engine to the auger, and at the same time, the state in which the movement wheel is prevented from rotating by the lock release mechanism is released. Therefore, the transmission of the driving force of the engine to the auger and the release of the lock by the lock release mechanism can be performed only by operating one operator, and the operability is improved.

  Still another structural feature of the snowplow according to the present invention is that a protrusion that can advance and retreat with respect to the snow surface and brakes the snowplow by being stabbed into the snow surface, and the operating element determines the driving force of the engine. And a braking mechanism that brakes the snowplow by piercing the protrusion into the snow surface in conjunction with the operation of the operating element when operated so as to reduce the output to less than or equal to the output. According to this, if the transmission of the driving force of the engine to the auger is interrupted by operating the operating element to reduce the driving force of the engine below a predetermined output, the protrusion is stabbed into the snow surface by the operation of the braking mechanism. The snowplow is braked. For this reason, it is possible to simultaneously cut off the transmission of the driving force of the engine to the auger and brake the snowplow by operating only one operator, and the operability is improved. Moreover, the braking force during parking is further improved by using the braking mechanism and the locking mechanism in combination.

  Still another structural feature of the snowplow according to the present invention is that at least one moving wheel, a lock mechanism for stopping rotation of the moving wheel, and operation of the operator when the automatic centrifugal clutch is connected. And a lock release mechanism that releases the stopping of the rotation of the moving wheel by the lock mechanism. When the braking mechanism brakes the snowplow, the locking mechanism stops the rotation of the moving wheel, and the braking mechanism removes the snow. This is because the brake mechanism and the lock mechanism are interlocked so that the lock mechanism does not stop the rotation of the moving wheel when the machine is not braked. According to this, since a part of the interlocking mechanism that interlocks the brake mechanism, the lock mechanism, and the operation element can be made common, the interlocking mechanism can be simplified.

  Still another structural feature of the snowplow according to the present invention is that the lock release mechanism can be operated independently of the operation of the operator to release the rotation of the moving wheel by the lock mechanism. It is in having provided a piece. According to this, it is possible to move the snow removal machine in a state where the moving wheel can be rotated by operating the operation piece independently from the operation element without driving the engine. In addition, by operating the operation piece independently from the operation element while the engine is driven, the snowplow can be moved to an idling state without stopping the driving of the engine.

  Still another structural feature of the snowplow according to the present invention is that an operation element urging means for urging the operation element in a direction to reduce the driving force of the engine is provided. According to this, the auger can be rotated or accelerated by operating the operating element against the urging force of the operating element urging means, and the operation against the urging force of the operating element urging means can be performed. By canceling the operation of the child, the rotation of the auger can be stopped or the rotation can be slowed. For this reason, the operability of the operator is improved.

(First embodiment)
Hereinafter, a snowplow according to a first embodiment of the present invention will be described with reference to the drawings. 1 to 3 show a snowplow A according to the embodiment. The snowplow A is provided at the snowplow main body 10, a snowplow 30 provided at the front of the snowplow main body 10, a support part 40 that supports the snowplow main body 10, and a rear part of the snowplow main body 10. It is comprised with the operation part 50. FIG. The snowplow main body 10 has an outer portion 10a formed in a box shape having a square shape in plan view and a substantially fan-shaped side surface (see FIG. 10), and a portion from the lower edge portion to the rear edge portion on both side surfaces of the outer portion 10a. A pair of bent support frames 10b and 10c for supporting is provided. FIG. 1 shows a state in which the inside of the snowplow main body 10 is exposed except for the front side portion of the outer portion 10a.

  As shown in FIGS. 1 and 4, the engine 11 is disposed in the central portion of the outer portion 10 a, and the fuel tank 12 is disposed on the rear upper surface of the outer portion 10 a. A fuel supply port is formed in the center of the upper surface of the fuel tank 12, and a tank cap 12a is detachably attached to the fuel supply port. Further, an intake fan (not shown) for sucking outside air is attached to the rear end portion in the outer shell portion 10a through a vent hole.

  In the upper left side portion of the rear portion in the outer portion 10a (the left side portion in the state of FIG. 4, the left and right direction will be described as the direction when the snowplow A is viewed from the front side). An air cleaner 13 is installed, and a carburetor 14 is installed adjacent to the air cleaner 13 on the front side of the air cleaner 13. The air cleaner 13 is located on the intake side of the engine 11, introduces outside air, and sends it to the carburetor 14. A carburetor 14 is connected to a tip end of a fuel pipe (not shown) extending from the fuel tank 12.

  Then, fuel is supplied from the fuel tank 12 to the carburetor 14 via the fuel pipe, and the supplied fuel is mixed with air sent from the air cleaner 13 to the carburetor 14 to be supplied to the engine 11 as an air-fuel mixture. The Further, the recoil handle 15 protrudes outward from the rear side portion of the right side surface of the outer portion 10a. The recoil handle 15 is connected to a recoil starter (not shown) provided adjacent to the engine 11 via a recoil rope. The recoil starter is connected to the crankshaft 11a of the engine 11, and pulls the recoil handle 15 to rotate the crankshaft 11a to start the engine 11.

  Further, the engine 11 is provided with a spark plug 16, and an exhaust side portion of the engine 11 is provided with a muffler 17. The spark plug 16 is connected to an ignition device 16b via an ignition cord 16a, and ignites the air-fuel mixture supplied from the carburetor 14 by the operation of the ignition device 16b and causes the engine 11 to explode. Drive to rotate. Then, the exhaust gas discharged from the engine 11 is sent to the muffler 17 and discharged to the outside from the exhaust pipe 17a while being silenced by the muffler 17. The carburetor 14 is connected to a speed governor 18 that adjusts the rotational speed of the engine 11 by adjusting the amount of fuel supplied from the fuel tank 12 via the fuel pipe.

  The governor 18 is an accelerator lever that rotates clockwise around the central axis 18b in a plan view shown in FIG. 4 when the rear end connecting portion 18a is pulled to the right side by an operation of an operation lever 52 described later. 18c, and a return spring 18d that is provided on the front end side of the accelerator lever 18c and biases the accelerator lever 18c counterclockwise. Further, the speed governor 18 includes a governor arm portion 19 that connects a portion of the rear portion left side of the rear portion of the accelerator lever 18c that is a predetermined distance from the rear end connecting portion 18a and the carburetor 14.

  The governor arm portion 19 includes a pair of governor arms 19a and 19b that can be bent with respect to the connecting portion. The governor arm 19a has a front end portion rotatably connected to a left side portion of the rear portion of the accelerator lever 18c, and a central side portion supported by the shaft portion 19c so as to be rotatable about the shaft portion 19c. Further, the governor arm 19b has a right end portion rotatably connected to a rear end portion of the governor arm 19a, and a left end portion connected to the carburetor 14.

  For this reason, when the accelerator lever 18c rotates, the governor arm 19a rotates about the shaft portion 19c, and the rotation of the tip of the governor arm 19b rotates the lever connected to the carburetor 14 to open the throttle valve of the carburetor 14. Adjust the degree. By the rotation of the governor arm 19b and the lever, the amount of fuel supplied from the fuel tank 12 to the carburetor 14 via the fuel pipe is changed, and the rotation speed of the engine 11 is changed. The rotation angle of the governor arm 19b in this case is positioned so that the rotation speed of the engine 11 becomes a predetermined speed.

  That is, the shaft portion 19c is connected to a crank mechanism (not shown) of the engine 11, and when the rotational speed of the crankshaft 11a exceeds a predetermined value, the shaft portion 19c has a force for suppressing rotation from the crank mechanism. receive. For this reason, the rotational force of the accelerator lever 18c transmitted through the governor arm 19a and the restraining force transmitted from the crank mechanism are applied to the shaft portion 19c, and the governor arm 19a is located at a position where the rotational force and the restraining force are balanced. Position.

  An automatic centrifugal clutch 20 is connected to the crankshaft 11a. As shown in FIGS. 5 and 6, the automatic centrifugal clutch 20 is disposed on the rear side in the clutch case 21, and includes a clutch inner 22 connected to the crankshaft 11 a and an outer peripheral side of the clutch inner 22. And a clutch outer 23 as a rotating body according to the present invention. The clutch inner 22 is formed in a substantially disc shape, and includes a protruding piece (not shown) that protrudes to the outer peripheral side when the rotational speed of the crankshaft 11a becomes equal to or higher than a predetermined rotational speed.

  The clutch outer 23 is formed in a substantially circular box shape with an open rear end surface from which the crankshaft 11a extends, and a rotary shaft 23a extending forward is connected to the center of the front surface. And the reduction gear 23b is attached to the front-end outer periphery of the rotating shaft 23a. Further, the inner peripheral surface of the clutch outer 23 can be engaged with the protruding piece of the clutch inner 22, and when the protruding piece protrudes to the outer peripheral side of the clutch inner 22, the clutch inner 22 and the clutch outer 23 are separated from each other. It is connected via a protruding piece.

  The rear side portion 21a of the clutch case 21 is formed in a substantially circular frame shape whose axial direction extends in the front-rear direction, and the front side portion 21b protrudes forward from a part of the front surface of the rear side portion 21a. It is formed in a horizontally long frame shape. And the wall part 21c is formed in the front surface of the rear part 21a of the clutch case 21, and it penetrates in the part corresponding to the center of the rear part 21a in the wall part 21c from the rear part 21a into the front part 21b. A through-hole is formed.

  A pair of bearings 24a and 24b are provided in the front and rear sides in the through hole of the wall 21c, and the rotary shaft 23a can rotate with the clutch outer 23 through the bearings 24a and 24b. It is supported by the case 21. For this reason, when the rotational speed of the crankshaft 11a becomes equal to or higher than a predetermined rotational speed, the rotational force of the clutch inner 22 is transmitted to the clutch outer 23, and the clutch inner 22 rotates together with the clutch outer 23. Further, a concave portion is formed in the front side portion 21b on the front surface of the wall portion 21c so as to be spaced from the through hole, and a bearing 24c is provided in the concave portion.

  And the rear end part of the impeller shaft 25 (the impeller 31 is omitted in FIG. 5) to which the impeller 31 is connected in the bearing 24c is rotatably connected. A secondary reduction gear 25a that engages with the reduction gear 23b of the rotary shaft 23a is attached. The diameter of the secondary reduction gear 25a is larger than the diameter of the reduction gear 23b, and the number of teeth formed on the peripheral surface of the secondary reduction gear 25a is larger than the number of teeth formed on the peripheral surface of the reduction gear 23b. It is increasing. For this reason, the secondary reduction gear 25 a reduces the rotational speed of the crankshaft 11 a transmitted via the automatic centrifugal clutch 20 and transmits it to the impeller shaft 25.

  In addition, the brake shaft 26 penetrates through a portion of the wall portion 21c that is substantially opposite to the concave portion across the through hole in the outer peripheral side portion of the front side portion 21b so as to be rotatable around the axis. The rear end portion of the brake shaft 26 extends in the vicinity of the outer peripheral surface of the clutch outer 23, and the brake pad 26 a is attached to the rear end portion so as to face the outer peripheral side of the clutch outer 23. A brake lever 26b extending downward is connected to the outer periphery of the front end portion of the brake shaft 26 at right angles to the brake shaft 26, and a wire portion of an auger brake wire 27 is connected to the lower end portion of the brake lever 26b. .

  By pulling the wire portion of the auger brake wire 27 in the direction of arrow a in FIG. 6, the brake pad 26a is separated from the outer peripheral surface of the clutch outer 23, and when the force for pulling the wire portion of the auger brake wire 27 is released, the brake pad 26 a abuts on the outer peripheral surface of the clutch outer 23. The brake shaft 26, the brake pad 26a, and the brake lever 26b constitute a stopping mechanism of the present invention.

  The snow removal unit 30 includes an impeller 31 coupled to the impeller shaft 25, an auger 33 provided in an auger case 32, a chute 34, and the like. The auger case 32 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 32a is the outline of the snowplow body 10. It is connected to the front end of the portion 10a. In addition, a shaft 35 is wound around the center of both side surfaces 32b and 32c of the auger case 32 in a state of being rotatable around the axis, and the auger 33 is attached to the shaft 35. The auger 33 is configured by assembling a plurality of spiral rotary blades 33a and a plurality of disk-shaped support plates 33b that support the rotary blades 33a. When the snow is caught, the snow is scraped into the auger case 32 side.

  Further, the front end side portion of the impeller shaft 25 extends toward the front of the impeller 31, and the connection rotation shaft 36 is coupled to the front end portion thereof. And the front-end part of this connection rotating shaft 36 is connected with the center part of the shaft 35 via the worm gear 36a. That is, the worm gear 36a transmits the rotational force of the connecting rotary shaft 36 extending in the front-rear direction to the shaft 35 extending in the left-right direction while changing the direction. The impeller 31 includes a plurality of rotating blades that rotate about the impeller shaft 25 and is disposed at the center of the rear part of the auger case 32.

  A portion of the outer peripheral surface portion 32a of the auger case 32 that is connected to the outer portion 10a of the snowplow main body 10 is formed with a recessed portion that protrudes rearward, and the impeller 31 is disposed in the recessed portion. A chute 34 that extends upward is provided on the left side of the portion of the upper surface of the auger case 32 where the impeller 31 is disposed. The chute main body 34a constituting the main body portion of the chute 34 is formed of a curved cylindrical body, and a rectangular frame-shaped discharge port portion 34b is attached to the upper end portion of the chute main body 34a. The chute body 34a is connected to the upper portion of the base portion 32d protruding from the auger case 32 so as to be rotatable about the axis and detachable.

  The discharge port portion 34b is connected to the chute body 34a so as to be rotatable in the vertical direction around a support shaft 34c provided at the upper end portion of the side surface where the curvature of the chute body 34a protrudes. A rod-shaped L-shaped lever 37 that is rotatable in the vertical direction around the support shaft 37 a is attached to the approximate center in the vertical direction on the side surface from which the curvature of the chute body 34 a protrudes. A rod-like connecting lever 38 that is rotatable around a support shaft 37b is connected to the shaft 37a side portion.

  Further, an inverted U-shaped engagement piece 38a is provided in the vicinity of the support shaft 34c on the upper surface of the discharge port portion 34b, and an upper end portion of the connecting lever 38 is provided on the upper portion of the engagement piece 38a. It is connected through a support shaft 38b in a rotatable state. Therefore, by rotating the L-shaped lever 37 to the left and right, the direction of the opening of the discharge port portion 34b can be changed to the left and right direction, and by moving the L-shaped lever 37 up and down, the opening of the discharge port portion 34b can be changed. The direction can be changed vertically by a predetermined angle.

  The support portion 40 includes a gutter 41 and a pair of moving wheels 42a and 42b. As shown in FIG. 7, the flange 41 is configured by a plate body having a substantially square shape in a plan view and curved in a bow shape in a side view, and has a flat portion 41 a and a flat portion 41 a at a central portion formed in a flat shape. It is comprised by the inclined surface parts 41b and 41c each formed in the front part and rear part. The inclined surface portion 41b is bent at a predetermined angle from the front end of the flat surface portion 41a and extends obliquely forward, and the inclined surface portion 41c is gently curved from the rear side of the flat surface portion 41a and extends obliquely rearward.

  And the wide protrusion which protrudes upwards 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 41, and the guide groove 41d which consists of a recessed part in the lower surface is formed in the lower surface , 41e are formed. Further, a wide notch 41f is formed in a portion corresponding to the space between the guide grooves 41d and 41e in the front edge portion of the flange 41. Furthermore, guide protrusions 43a and 43b made of rods are attached along both left and right edges of the lower surface of the flange 41.

  Then, on both sides of the center portion in the front-rear direction on the upper surface of the flange 41, an attachment piece 45a provided with a pipe-like swing shaft 44a and an attachment piece 45b provided with a pipe-like swing shaft 44b are fixed. Yes. The attachment pieces 45a and 45b are each formed of a plate bent in an L shape, and are attached by fixing the horizontal piece to the upper surface of the flange 41 with the vertical piece positioned on the outside of the flange 41. . Then, a swing shaft 44a with the center of the vertical piece of the mounting piece 45a is fixed by penetrating the left and right in the center, and a swing shaft 44b with the center of the vertical piece of the mounting piece 45b facing the left and right is fixed. It is fixed through.

  Further, support pieces 46a and 46b each provided with a support hole extend downward from the center part of the support frames 10b and 10c of the snowplow main body 10, and the support shaft 46 spans the support holes of both the support pieces 46a and 46b. Has been. The flange 41 is supported in a swingable manner by the outer shell portion 10a by inserting the support shaft 46 into the swing shafts 44a and 44b. Further, as shown in FIGS. 8 and 9, each of the moving wheels 42a and 42b includes a ring-shaped wheel body, a bearing portion having a bearing hole formed in the center, and a radial shape from the bearing portion toward the wheel body. The four spokes extend to the sides of the flange 41 in a state where the support shaft 46 is inserted into the bearing hole.

  Further, a lever attachment piece 46c extending obliquely downward toward the vicinity of the support shaft 46 is attached to the inner surface of the support piece 46a, and a lock mechanism 47 is provided on the lever attachment piece 46c. The lock mechanism 47 includes a shaft portion 47a attached to the lever attachment piece 46c with the axial direction facing front and rear, a locking piece 47b provided at the tip of the shaft portion 47a, and a wheel for moving the locking piece 47b. A spring member 47c that biases toward the 42a side and a brake lever 47d are provided. The locking piece 47b is composed of a tubular portion rotatably assembled to the outer periphery of the shaft portion 47a, and an L-shaped plate-like portion extending downward from the tubular portion, and the vertical piece of the plate-like portion is in the vertical direction. The horizontal piece of the plate-like portion enters between the spokes of the moving wheel 42a and stops the rotation of the moving wheel 42a.

  The spring member 47c is composed of a substantially tubular main body wound around the outer peripheral surface of the shaft portion 47a, and a pair of engaging portions extending from both ends of the main body, and one engaging portion is formed in a linear shape, The other engaging portion is formed in an L-shaped line. The end of one engaging portion engages with a hole 46d provided in the lever mounting piece 46c, and the tip end portion of the other engaging portion engages with a vertical piece of the locking piece 47b. The stop piece 47b is urged toward the moving wheel 42a. The brake lever 47d is configured by a substantially oval plate body having shaft holes formed on both side portions.

  The brake lever 47d fixes the tubular portion of the locking piece 47b in one shaft hole, and the connecting shaft 48a provided at the tip of the wheel brake wire 48 extending from the operation portion 50 side to the other shaft hole. Is inserted in a rotatable state. Therefore, in a state where no external force is applied to the brake lever 47d, as shown in FIG. 8, the locking piece 47b is urged toward the moving wheel 42a by the elastic force of the spring member 47c, and the moving wheel. The rotation of 42a is stopped. Further, when an external force is applied to move the lower end of the brake lever 47d away from the moving wheel 42a against the elastic force of the spring member 47c, as shown in FIG. 9, the locking piece 47b is separated from the moving wheel 42a. The moving wheel 42a is in a rotatable state.

  The operation unit 50 includes a handle 51 connected to both upper ends of the support frames 10b and 10c, an operation lever 52, various interlocking mechanisms described later, and the like. The handle 51 is composed 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 ends of the support frames 10b and 10c obliquely upward at the rear. The side portions 51a and 51b are extended, and the rear side portion is formed of a substantially U-shaped gripping portion 51c that is bent from the rear end portions of the side portions 51a and 51b and extends upward. The handle 51 is connected to the support frames 10b and 10c in a rotatable state via a pair of connection mechanisms 53 (only one is shown).

  The connection mechanism 53 includes a support plane part 53a having a wide side surface formed at the upper ends of the support frames 10b and 10c, and a supported plane part having a wide side surface by crushing the front end parts of the side parts 51a and 51b. 53b is a mechanism for connecting 53b. A shaft hole is formed in a boundary portion of the support plane portion 53a with the support frames 10b and 10c, and an arcuate guide hole 53c centering on the shaft hole is formed in a rear side portion of the support plane portion 53a. Yes. Further, shaft holes are formed in the front end portion and the rear end portion of the supported flat surface portion 53b, respectively, and the shaft member 53d is provided in the shaft hole in the front end portion of the supported flat surface portion 53b and the shaft hole in the support flat surface portion 53a. By inserting the handle 51, the handle 51 is connected to the support frames 10b and 10c so as to be rotatable in the vertical direction.

  And the fastening member 53e 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 53b, and the guide hole 53c of the support plane part 53a. By loosening the tightening member 53e, the handle 51 can be rotated up and down around the shaft member 53d as shown in FIG. 10, and the handle 51 is fixed in its position by tightening the tightening member 53e. can do. Further, when the snowplow A is stored in a storage case or the like, the handle 51 is pivoted as shown in FIG. 11 by removing the shaft hole at the rear end portion of the supported flat surface portion 53b from the tightening member 53e. It can be folded forward on the upper side of the snowplow body 10 by rotating forward about the member 53d. At that time, the snowplow A can be folded more compactly by removing the chute 34 from the base 32d and tilting it down.

  The operating lever 52 is substantially the same shape as the rear side portion of the handle 51, and is formed of a rod that is slightly smaller and thinner than the rear side portion of the handle 51, and is composed of side portions 52a and 52b on both sides and a grip portion 52c. ing. The operation lever 52 is attached to the handle 51 via a pair of connecting members 54 and 55 so as to overlap the rear side portion of the handle 51 by a downward pressing operation. As shown in FIGS. 2 to 4, the connecting member 54 is a fixed piece 54 a fixed to the central portion of the side portion 51 a and a fixed piece 54 a that is attached to the rear side of the side portion 51 a with a space therebetween. The moving piece 54b includes a coil spring 54c that is stretched between the fixed piece 54a and the rotating piece 54b.

  The fixed piece 54a is formed of a square plate having a notch hole through which the auger brake wire 27 is inserted. And the fixed piece 54a is being fixed to the upper part of the side part 51a so that it may protrude inside from the upper part of the side part 51a, and the part in which the notch hole was formed protrudes to the inner side of the side part 51a. . Further, the rotating piece 54b is configured by a substantially L-shaped plate member in which three holes (not shown) are formed at intervals, and a side is formed by inserting a support shaft into one hole. It is attached to the inner part of the part 51a so as to be rotatable in the vertical direction. The end of the wire portion of the auger brake wire 27 is locked in the central hole. The coil spring 54c is attached in a state in which both ends are engaged with the other hole of the rotating piece 54b and the fixed piece 54a. And the edge part of the side part 52a in the operation lever 52 is being fixed to the rear surface of the rotation piece 54b.

  The connecting member 55 includes a fixed piece 55a fixed to the central portion of the side portion 51b, and a pair of rotating pieces 55b and 55c attached to the rear side of the side portion 51b with a distance from the fixed piece 55a. A coil spring 55d is provided between the fixed piece 55a and the rotating piece 55c. The fixed piece 55a is formed of a wide, substantially rectangular plate having a notch hole for inserting the throttle wire 56 and a notch hole for inserting the wheel brake wire 48. The fixing piece 55a is fixed to the upper part of the side part 51b so as to protrude from the upper part of the side part 51b, and the portions in which both cutout holes are formed protrude to both sides of the side part 51b. .

  The rotating pieces 55b and 55c are substantially L-shaped plate members disposed on the inner side and the outer side of the side portion 51b with the side portion 51b interposed therebetween, and are disposed on the outer side of the side portion 51b. The rotating piece 55c is formed with three holes 56a and the like at intervals, and the rotating piece 55b disposed inside the side portion 51b is formed with two holes at intervals. Yes. The pair of rotating pieces 55b and 55c are attached to both sides of the side portion 51b so as to be vertically rotatable with the support shaft 56b inserted through one hole portion. Then, the end of the wire portion of the throttle wire 56 is locked in the other hole portion of the rotating piece 55b.

  Further, the end of the wire portion of the wheel brake wire 48 is locked in the central hole of the rotating piece 55c. The coil spring 55d is attached with both end portions engaged with the other hole of the rotating piece 55c and the fixed piece 55a. Further, the end of the side portion 52b of the operation lever 52 is fixed to the rear surface of the rotating piece 55b. An L-shaped parking lever 57 as an operation piece of the present invention is provided on the rear surface of the rotating piece 55c, and the rear portion of the parking lever 57 is engaged with the lower portion of the side portion 52b.

  Therefore, the operation lever 52 is biased upward by the coil spring 54c elastic force and is biased upward by the coil spring 55d via the parking lever 57 biased upward by the elastic force of the coil spring 55d. , Away from the handle 51. When the grip portion 52c of the operation lever 52 is pressed against the grip portion 51c side of the handle 51, the parking lever 57 also moves to the grip portion 51c side together with the operation lever 52, and the throttle wire 56, the auger brake wire 27, and the wheel brake wire. Each 48 is pulled backwards. By pulling the throttle wire 56, the auger brake wire 27 and the wheel brake wire 48 rearward, the engine 11 increases the rotational speed, and the brake pad 26 a can be separated from the outer peripheral surface of the clutch outer 23 to rotate the clutch outer 23. To make sure

  Further, the locking piece 47b is separated from the moving wheel 42a so that the moving wheel 42a can be rotated. In addition, the parking lever 57 can be operated independently of the operation lever 52 so that the moving wheel 42a can be rotated. For this reason, the snowplow A can be moved by pressing only the parking lever 57 against the grip 51c without driving the engine 11. Further, when the engine 11 is driven, the snowplow A can be moved in an idling state without stopping the driving of the engine 11 by pressing only the parking lever 57 toward the grip 51c.

  The coil springs 54c and 55d constitute the operating element biasing means of the present invention. Further, by connecting the auger brake wire 27 to the operation lever 52 via the connection member 54, the interlocking mechanism of the present invention is configured, and by connecting the wheel brake wire 48 to the operation lever 52 via the connection member 55. The lock release mechanism of the present invention is configured. Further, a transmission mechanism for transmitting the driving force of the engine 11 to the auger 33 or blocking transmission of the driving force by connecting the throttle wire 56 to the operation lever 52 via the connecting member 55 is configured. Is done. 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 10a.

  In this configuration, when the snowplow A is operated, first, as shown in FIG. 12, after holding the grip 51c of the handle 51, the grip 52c of the operation lever 52 is moved to the grip 51c of the handle 51. The moving wheel 42a is brought into a rotatable state by pressing against the side. Next, the snow remover A is moved to the snow surface by rotating the wheels 42a, 42b for movement on the road surface by operating the handle 51 left and right while pushing the handle 51. Then, after operating the start switch SW to the on side, the recoil handle 15 is pulled to start the engine 11, and the discharge port portion 34b of the chute 34 is directed in a predetermined direction, for example, the side of the snowplow A. Then, the grip 52c of the operation lever 52 is pressed again toward the grip 51c of the handle 51.

  As a result, the moving wheel 42a becomes rotatable again, and the brake pad 26a moves away from the outer peripheral surface of the clutch outer 23, so that the clutch outer 23 becomes rotatable. Further, the rotational speed of the engine 11 gradually increases. When the rotational speed of the engine 11 reaches a predetermined value, the automatic centrifugal clutch 20 is connected and the impeller 31 and the auger 33 start rotating. Due to the rotation of the auger 33, the snow on the snow surface is scraped into the auger case 32, and the snow scraped into the auger case 32 is blown up to the upper side of the chute 34 by the rotation of the impeller 31. The snow blown up to the upper side of the chute 34 is discharged to the side of the snow removal machine A from the opening of the discharge port 34b.

  Then, the snow removal machine A is moved on the snow surface while the operation amount of the operation lever 52 is changed according to the state of the snow surface, and the snow removal work is sequentially performed. In this case, the snow remover A can be easily moved by sliding the gutter 41 in contact with the snow surface, and the guide grooves 41d and 41e and the guide protrusions 43a and 43b provided on the lower surface of the gutter 41 are guided. Thus, the snowplow A moves forward in an appropriate state without skidding. In addition, when the snow surface changes from a horizontal surface to an inclined surface, since the inclined surface portions 41b and 41c are formed at the front portion and the rear portion of the kite 41, respectively, as shown in FIG. You can move forward. In particular, since the inclined surface portion 41c is smoothly curved, it can smoothly pass through the corner portion without entering the corner portion of the snow surface.

  When stopping the snow removal work, the operator releases the operation lever 52 to release the pressing operation of the operation lever 52. As a result, the rotational speed of the engine 11 is reduced, the automatic centrifugal clutch 20 is disconnected, and transmission of the driving force from the engine 11 to the auger 33 is interrupted. At the same time, the brake pad 26 a comes into contact with the outer peripheral surface of the clutch outer 23 to stop the rotation of the clutch outer 23. As a result, the auger 33 is prevented from continuing to rotate due to inertia. The locking piece 47b of the lock mechanism 47 engages between the spokes of the moving wheel 42a to make the moving wheel 42a unrotatable. Then, when stopping the driving of the engine 11, the start switch SW is operated to the off side.

  As described above, in the snowplow A according to the present embodiment, by pressing the operation lever 52, the brake pad 26a is separated from the outer peripheral surface of the clutch outer 23 and the clutch outer 23 can be rotated, and the lock The state in which the rotation of the moving wheel 42a is stopped by the mechanism 47 is released. The engine 11 increases or decreases the rotational speed according to the operation amount of the operation lever 52. Further, by releasing the pressing operation of the operation lever 52, the rotational speed of the engine 11 is reduced, the automatic centrifugal clutch 20 is disconnected, and the transmission of the driving force of the engine 11 to the auger 33 is cut off. 26 a abuts on the outer peripheral surface of the clutch outer 23 to stop the rotation of the clutch outer 23.

  For this reason, it can be avoided that the auger 33 continues to rotate unnecessarily. In addition, the movement wheel 42 a is prevented from rotating by the lock mechanism 47. In this way, by pressing the operation lever 52, two operations of starting transmission of the driving force to the auger 33 and releasing the lock of the moving wheel 42a by the lock mechanism 47 can be performed simultaneously. By releasing the pressing operation, it is possible to simultaneously perform the two operations of blocking the transmission of the driving force to the auger 33 and stopping the rotation of the clutch outer 23, so that the operability is improved.

  Further, by transmitting the driving force of the engine 11 to the auger 33 via the automatic centrifugal clutch 20, the arrangement height of the engine 11 and the auger 33 can be made substantially the same. For this reason, both the engine 11 and the auger 33 can be arranged at a low position, and the snowplow A can have a low center of gravity. Further, since the operating lever 52 is urged by the coil springs 54c and 55c in the direction of decreasing the driving force of the engine 11, the engine 11 can be decelerated only by releasing the operating lever 52. The operability of 52 is improved. Furthermore, since the crankshaft 11a of the engine 11 and the impeller shaft 25 are arranged in parallel in the front-rear direction, a compact arrangement is possible.

(Second Embodiment)
14 and 15 show a second embodiment of the present invention. In this embodiment, in addition to the lock mechanism 47 provided in the snow remover A described above, a brake mechanism for braking the snow remover is provided. I have. This braking mechanism is configured by using a braking lever 58 as a protrusion of the present invention instead of the brake lever 47d of the lock mechanism 47 shown in FIGS. That is, the brake lever 58 includes the brake lever 47d shown in FIGS. 8 and 9, the horizontal piece 58a extending substantially horizontally from the upper end of the brake lever 47d, and the vertical extending downward from the tip of the horizontal piece 58a. It is formed in a shape in which the piece 58b is integrated.

  In addition, a hole is formed in a portion of the flange 59 corresponding to the vertical piece 58b, and when the vertical piece 58b is in a vertical state, the lower end portion of the vertical piece 58b is a flange as shown in FIG. It protrudes downward through 41 holes. Then, when the brake lever 58 rotates about the shaft portion 58c on which the base end portion of the L-shaped portion is supported in the clockwise direction in FIG. 14, the lower end portion of the vertical piece 58b is bent as shown in FIG. It comes to be located above 41 holes. About the structure of the other part of the snowplow provided with this braking mechanism, it is the same as that of the snowplow A mentioned above. Accordingly, the same parts are denoted by the same reference numerals and the description thereof is omitted.

  With this configuration, when no external force is applied to the brake lever 58, as shown in FIG. 14, the vertical piece 58b of the brake lever 58 is urged toward the snow surface by the elastic force of the spring member 47c. The snowplow is braked by contacting the snow surface. Further, when the operation lever 52 is pressed and the lower end of the moving wheel 42a side portion of the braking lever 58 is moved away from the moving wheel 42a via the wheel brake wire 48, as shown in FIG. The vertical piece 58b of the lever 58 is separated from the snow surface and the state where the snowplow is braked is released. At that time, the locking piece 47b of the locking mechanism 47 also stops the rotation of the moving wheel 42a in conjunction with the braking lever 58, or releases the stopping to make the moving wheel 42a rotatable.

  According to this, when the operation lever 52 is operated to interrupt the transmission of the driving force of the engine 11 to the auger 33, the vertical piece 58b of the brake lever 58 is pierced into the snow surface to brake the snowplow and the lock mechanism. The action of 47 prevents the movement of the moving wheel 42a. For this reason, the transmission of the driving force of the engine 11 to the auger 33 can be interrupted, the snow blower can be braked, and the rotation of the moving wheel 42a can be simultaneously controlled, thereby improving the operability. Further, by using the brake mechanism and the lock mechanism 47 in combination, the braking force during parking is further improved. Furthermore, since the interlocking mechanism that interlocks the brake mechanism and lock mechanism 47 and the operation lever 52 is made common, the interlocking mechanism becomes simple.

(Third embodiment)
16 and 17 show a third embodiment of the present invention. FIG. 16 shows a mechanical multi-plate clutch 60 used in the embodiment, and FIG. The multi-plate clutch 60 includes an internal rotating body 61 having a plurality of inner disks and an external rotating body 62 having a plurality of outer disks. The inner disk and the outer disk are alternately positioned to rotate internally. An external rotating body 62 is disposed outside the body 61. The internal rotating body 61 is slidable in the axial direction with respect to the external rotating body 62. When the internal rotating body 61 moves forward and the inner disk and the outer disk are pressure-bonded, the multi-plate clutch 60 is When the internal rotor 61 is connected and the inner disk and the outer disk are separated, the multi-plate clutch 60 is disconnected.

  Further, a pressing plate 63 is attached to the rear surface of the inner rotating body 61. By pressing the inner rotating pair 61 forward and releasing the pressing on the rear surface of the pressing plate 63, a multi-plate is provided. A pressing lever 64 for connecting and disconnecting the clutch 60 is provided. The pressing lever 64 includes a lever main body 64a that extends in the left-right direction on the rear right side of the multi-plate clutch 60, and a pressing piece 64b that is bent from the left end portion of the lever main body 64a and extends obliquely forward. The pressing lever 64 is rotatably supported at the boundary between the lever main body 64a and the pressing piece 64b by the rotation support shaft 65. By rotating counterclockwise in the state of FIG. 16, the pressing piece 64b is It can be pressed against the pressing plate 63.

  The right end portion of the pressing lever 64 is connected to the end portion of the clutch wire 66 extending from the operation portion 70 side, and a spring member is provided in the vicinity of the connecting portion with the clutch wire 66 in the right end portion side portion of the pressing lever 64. One end of 67 is connected. The other end of the spring member 67 is fixed to a predetermined portion of the snowplow main body, and the spring member 67 urges the pressing lever 64 in a direction in which the pressing of the pressing plate 63 by the pressing lever 64 is released. For this reason, when the clutch wire 66 is not operated, the multi-plate clutch 60 is maintained in the disconnected state by the elastic force of the spring member 67.

  The operation unit 70 is configured as shown in FIG. 17, and the operation lever 72 is attached to the handle 71 via a pair of connection members 74 and 75. The connecting member 74 includes a fixed piece 74a fixed to the central portion of the side portion 71a, a pair of rotating pieces 74b and 74c attached to the rear side of the side portion 71a at a distance from the fixed piece 74a, and a fixed piece. The coil spring 74d is spanned between 74a and the rotating piece 74b, and the coil spring 74e is spanned between the fixed piece 74a and the rotating piece 74c. The fixed piece 74a is formed of a wide, substantially rectangular plate having a notch hole for inserting the throttle wire 76 and a notch hole for inserting the auger brake wire 77.

  And the fixed piece 74a is being fixed to the upper part of the side part 71a so that it may protrude on both sides from the upper part of the side part 71a, and the part in which both the notch holes were formed protrudes in the both sides of the side part 71a, respectively. . The rotating pieces 74b and 74c are substantially L-shaped plate members disposed on the outer side and the inner side of the side portion 71a with the side portion 71a interposed therebetween, and three hole portions are spaced apart from each other. Is formed. The pair of turning pieces 74b and 74c are attached to both sides of the side portion 71a so as to be vertically rotatable by inserting a support shaft into one hole portion. The end of the wire portion of the throttle wire 76 is locked in the central hole of the rotating piece 74b, and the end of the wire portion of the auger brake wire 77 is engaged in the central hole of the rotating piece 74c. It is stopped.

  The coil spring 74d is attached with both ends engaged with the other hole of the rotating piece 74b and the fixed piece 74a, and the coil spring 74e has both ends attached to the other hole of the rotating piece 74c. It is attached in the state engaged with the part and the fixed piece 74a. Further, the end of the side portion 72a of the operation lever 72 is fixed to the rear surface of the rotating piece 74c. An L-shaped throttle lever 73 is provided on the rear surface of the rotating piece 74b, and the rear portion of the throttle lever 73 is engaged with the lower portion of the side portion 72b.

  The connection member 75 has the same structure as the connection member 55 of the snowplow A described above, and connects the clutch wire 66 to the rotating piece 75b installed inside the side portion 71b of the handle 71 to A wheel brake wire 78 is connected to a rotating piece 75c installed on the outer side of the side portion 71b. The structure of the other part of the snowplow provided with the multi-plate clutch 60 and the operation unit 70 is the same as that of the snowplow A described above. Therefore, the same reference numerals are given to the same parts.

  According to this, when the operation lever 72 is pressed to the handle 71 side, the throttle wire 76, the auger brake wire 77, the clutch wire 66, and the wheel brake wire 78 are pulled backward. When the throttle wire 76, the auger brake wire 77, the clutch wire 66, and the wheel brake wire 78 are pulled rearward, the engine 11 increases in rotational speed, and the brake pad 26a is connected to the external rotating body 62 of the multi-plate clutch 60. The external rotator 62 is brought into a rotatable state away from the outer peripheral surface.

  In addition, the multi-plate clutch 60 is in a connected state, and the locking piece 47b is separated from the moving wheel 42a to make the moving wheel 42a rotatable. Furthermore, since this snowplow is provided with a throttle lever 73 that can be operated independently of the operation lever 72, in addition to the parking lever 57, the throttle lever 73 can be operated without operating the operation lever 72. The rotation speed of the engine 11 can be changed. The other effects of this snow removal machine are the same as those of the snow removal machine A described above.

(Fourth embodiment)
Moreover, FIG. 18 has shown the operation part 70a with which the snow remover which concerns on 4th Embodiment of this invention is provided. The operation portion 70a is not provided with an auger brake wire, and only the coil spring 77c is stretched between the fixed piece 77a and the rotating piece 77b. The fixing piece 77a protrudes from the upper surface of the side portion 77d to the outside. The rest of the configuration of the operation unit 70a is the same as that of the operation unit 70 of the third embodiment described above. Accordingly, the same parts are denoted by the same reference numerals and the description thereof is omitted. Although not shown, in the snow remover provided with the operation unit 70a, a belt clutch is used as a clutch for transmitting the driving force of the engine 11 to the auger 33 or interrupting the transmission of the driving force. .

  This belt clutch is provided with a pulley and a belt stretched over the pulley. When the belt is tensioned and pressed against the pulley, the driving force of the engine 11 is transmitted to the auger 33 side, and when the belt is loosened, it idles. As a result, transmission of driving force is interrupted. Further, when the belt is loosened and the clutch is disengaged, a mechanism is also provided in which the rotation-preventing iron plate comes into contact with the belt, whereby the rotation of the rotating body on the auger 33 side is stopped. About the structure of the other part of the snowplow provided with this operation part 70a and the belt clutch, it is the same as that of the snowplow according to the third embodiment described above, and this snowplow also relates to the third embodiment described above. The same effect as a snowplow can be obtained.

(Fifth embodiment)
Moreover, FIG. 19 has shown the operation part 50a with which the snow remover which concerns on 5th Embodiment of this invention is provided. A throttle wire 56c, a wheel brake wire 48b, and a clutch switch 79 are attached to the operation unit 50a. A configuration of the operation unit 50a excluding the throttle wire 56c, the wheel brake wire 48b, and the clutch switch 79 is as follows. It is the same as each part which comprises the operation part 50 with which the snow remover A mentioned above is equipped. Therefore, the same reference numerals are given to the same parts.

  In the operation unit 50a, the throttle wire 56c is coupled to the connecting member 54, and the wheel brake wire 48b is coupled to the rotating piece 55c via the fixed piece 55a in the connecting member 54. An end portion of an operation line 79a extending from the clutch switch 79 is connected to the rotating piece 55b via a fixed piece 55a. The clutch switch 79 is turned on when the operation line 79a is pulled backward by the operation of the operation lever 52, and is turned off when the operation line 79a returns to the book position by releasing the operation of the operation lever 52. Although not shown, in the snow remover provided with the operation unit 50a, an electromagnetic clutch is used as a clutch that transmits the driving force of the engine 11 to the auger 33 or interrupts the transmission of the driving force. .

  In this electromagnetic clutch, an electromagnet is attached to one of the rotating iron plates, and when an electric current is supplied to the electromagnet from a battery (not shown) mounted on the snowplow A, the other disc is sucked and rotates together. Is used to provide a clutch function by turning on and off the current. The electromagnetic clutch also includes a brake mechanism that stops energization and at the same time stops rotation of the disc. That is, the electromagnetic clutch is energized and connected by operating the clutch switch 79 to the on side, and the energization is stopped and disconnected by operating the clutch switch 79 to the off side. For this reason, when the clutch switch 79 is operated to the off side, the electromagnetic clutch is disengaged, and at the same time, the rotation of the rotating body on the auger 33 side is stopped. About the structure of the other part of the snowplow provided with this operation part 50a and an electromagnetic clutch, it is the same as each part with which the snowplow A mentioned above, and this snowplow has the same effect as the snowplow A. Obtainable.

  20 and 21 show a ridge 81 according to a modification. In the flange 81, an attachment piece 85 having a pipe-like rocking shaft 84 is formed separately from the flange 81, and is attached to the support shaft 86 in advance. Then, a pair of hooks 85a (only one is shown) is provided on the upper surface of the horizontal piece of the mounting piece 85 with a space in the front-rear direction. An engagement member 83 having a pair of rotary engagement portions 82 that can be engaged with the hooks 85a is attached. Each of the engaging portions 82 is a lever portion 82a rotatably attached to the upper surface of the flange 81, and a U-shaped engaging piece 82b that is rotatably connected to both sides of the substantially central portion of the lever portion 82a and engageable with the hook 85a. It consists of and.

  Then, as shown in FIG. 19A, by lifting the collar 81 from the state where the collar 81 is positioned below the support shaft 86 with the tip of the engagement piece 82b facing upward, As shown in FIG. 19B, the engaging piece 82b can be positioned above the hook 85a. After engaging the engagement piece 82b with the hook 85a, the lever 81a is attached to the support shaft 86 via the attachment piece 85 by pressing and rotating the tip of the lever portion 82a toward the upper surface of the flange 81. be able to. Further, when removing the eaves 81 from the snowplow, the above-described operation for attachment is performed in reverse. According to this, the attachment / detachment of the flange 81 is facilitated. Moreover, the structure of the other part of this collar 81 is the same as that of the collar 41 described above. Further, the engine generator according to the present invention is not limited to the above-described embodiment, and can be implemented with appropriate modifications within the technical scope of the present invention.

It is the side view which showed the snow remover which concerns on 1st Embodiment of this invention. It is the top view which showed the snow removal machine. It is the front view which showed the snowblower. It is the top view which showed the inside of the snowplow main body. It is sectional drawing which showed the assembly | attachment state of the automatic centrifugal clutch. It is the side view which showed the automatic centrifugal clutch. FIG. 2 shows a ridge, (a) is a plan view, (b) is a side view, and (c) is a 7-7 cross-sectional view of (a). The state where the lock mechanism is locked is shown, (a) is a front view, (b) is a side view. The state which the lock | rock of the removal locking mechanism was cancelled | released is shown, (a) is a front view, (b) is a side view. It is the side view which showed the state which adjusts the handle of a snowblower. 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. The brake mechanism and lock mechanism used in 2nd Embodiment of this invention are shown in the locked state, (a) is a front view, (b) is a side view. The brake mechanism used in 2nd Embodiment of this invention and the lock mechanism have shown the state by which the lock | rock was cancelled | released, (a) is a front view, (b) is a side view. It is sectional drawing which showed the assembly | attachment state of the multi-plate clutch used in 3rd Embodiment of this invention. It is the top view which showed the operation part used by 3rd Embodiment of this invention. It is the top view which showed the operation part used in 4th Embodiment of this invention. It is the top view which showed the operation part used in 5th Embodiment of this invention. It is a partially notched top view which showed the scissors which concern on a modification. It is the front view which showed the state which attaches the collar which concerns on a modification, (a) is the state which installed the collar below the support shaft, (b) is the state which lifted the collar, (c) is a hook and an engaging part Is shown in a state where the heel is attached.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Engine, 20 ... Automatic centrifugal clutch, 23 ... Clutch outer, 26 ... Brake shaft, 26a ... Brake pad, 26b ... Brake lever, 27, 77 ... Auger brake wire, 33 ... Auger, 42a, 42b ... Moving wheel, 47: Lock mechanism, 48, 48b, 78 ... Wheel brake wire, 52, 72 ... Operation lever, 56, 56c, 76 ... Throttle wire, 57 ... Parking lever, 58 ... Braking lever, 60 ... Multi-plate clutch, 62 ... External Rotating body, 66 ... clutch wire, 73 ... throttle lever, 79 ... clutch switch, A ... snowplow.

Claims (12)

A driving force transmission side for transmitting a driving force of the engine to the auger via the rotating body by connecting a clutch having a rotating body, and a transmission of the engine driving force to the auger being cut off by disconnecting the clutch An operation element that selectively operates on one side of the driving force cutoff side to perform transmission or cutoff of the driving force of the engine to the auger;
A restraining mechanism for restraining the rotation of the rotating body;
And an interlocking mechanism that causes the stopping mechanism to stop the rotation of the rotating body in conjunction with the operation of the operating element when the operating element is operated to the driving force cutoff side. snowblower.   At least one moving wheel, a lock mechanism for stopping the rotation of the moving wheel, and when the operating element is operated to the driving force transmission side, the locking mechanism operates in conjunction with the operation of the operating element. The snow remover according to claim 1, further comprising: a lock release mechanism that releases the restraining of rotation of the moving wheel.   A protrusion that can advance and retreat with respect to the snow surface and brakes the snowplow by being stabbed into the snow surface, and when the operation element is operated to a driving force cutoff side, the operation is interlocked with the operation of the operation element. The snow remover according to claim 1, further comprising: a braking mechanism that pierces the protrusion onto the snow surface to brake the snow remover.   At least one moving wheel, a lock mechanism for stopping the rotation of the moving wheel, and when the operating element is operated to the driving force transmission side, the locking mechanism operates in conjunction with the operation of the operating element. An unlocking mechanism for releasing the stopping of the rotation of the moving wheel, and when the braking mechanism is braking the snowplow, the locking mechanism stops the rotation of the moving wheel, and the braking mechanism is The snowplow according to claim 3, wherein the brake mechanism and the lock mechanism are interlocked so that the lock mechanism does not stop the rotation of the moving wheel when the machine is not braked.   2. The rotation of the rotating body is restrained when the clutch includes the restraining mechanism and the clutch is disengaged to interrupt transmission of the driving force of the engine to the auger. The snow blower according to any one of 4.   A throttle operating piece for changing the driving force of the engine is provided, and when the operating element is operated to the driving force transmitting side, the throttle operating piece increases the driving force of the engine, and the operating element is driven by the driving force. The throttle operation piece can be operated in conjunction with the operation of the operation element so that the throttle operation piece reduces the driving force of the engine when operated to the shut-off side. The snow removal machine as described in any one. An operation of adjusting the driving force of the engine according to the operation amount when the automatic centrifugal clutch provided with the rotating body is connected by a predetermined output of the engine and the driving force of the engine is transmitted to the auger through the rotating body. With the child,
A restraining mechanism that restrains the rotation of the rotating body;
When the operation element is operated so as to reduce the driving force of the engine below the predetermined output, the stop mechanism stops the rotation of the rotating body in conjunction with the operation of the operation element. A snow remover comprising an interlocking mechanism.   At least one moving wheel, a lock mechanism for stopping rotation of the moving wheel, and rotation of the moving wheel by the lock mechanism in conjunction with operation of the operator when the automatic centrifugal clutch is connected The snow remover according to claim 7, further comprising: a lock release mechanism that releases the restraint.   A protrusion that can move forward and backward with respect to the snow surface and brakes the snowplow when stabbed into the snow surface, and the operation element is operated to reduce the driving force of the engine to the predetermined output or less. The snow remover according to claim 7 or 8, further comprising a braking mechanism that brakes the snow remover by inserting the protrusion into the snow surface in conjunction with operation of the operation element.   At least one moving wheel, a lock mechanism for stopping rotation of the moving wheel, and rotation of the moving wheel by the lock mechanism in conjunction with operation of the operator when the automatic centrifugal clutch is connected An unlocking mechanism for releasing the stopping of the vehicle, and when the braking mechanism is braking the snowplow, the locking mechanism stops the rotation of the moving wheel, and the braking mechanism brakes the snowplow. The snowplow according to claim 9, wherein the brake mechanism and the lock mechanism are interlocked so that the lock mechanism does not stop the rotation of the moving wheel when there is not.   9. The operation piece according to claim 2, wherein the lock release mechanism is provided with an operation piece that can be operated independently of the operation of the operation element to release the rotation of the moving wheel by the lock mechanism. snowblower.   The snow remover according to any one of claims 1 to 11, further comprising operation element urging means for urging the operation element in a direction in which the driving force of the engine is decreased.

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