JP2004353253A - Shooter of snow remover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shooter of a snow remover capable of quickly turning the shooter with a simple structure and being surely held at a required position. <P>SOLUTION: In the snow remover 10 equipped with the shooter 21 in a turnable manner on a blower housing 16 storing a snow raking auger 19 and a blower 17, a disc-like turning seat 20 is integrally provided to a turning base section of the shooter 21, recess sections 20a and 20a, etc. are formed in every predetermined interval on the circumference section of the turning seat 20, and a holding mechanism engaged by retractably energizing an engaging body 43 to the recess sections 20a and 20a, etc. in a movable manner is mounted on the blower housing 16. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a shooter for a snow blower, and more particularly to a technique for rotating a shooter to hold the shooter at an arbitrary position.
[0002]
[Prior art]
Conventionally, a snowplow equipped with an auger that scrapes snow, a blower that bounces the scraped snow upward, and a shooter that guides the snow that is bounced, is mounted on an airframe equipped with a traveling device. It is known.
[0003]
This shooter is configured to be rotatable by attaching a gear to a lower portion thereof and rotating a gear meshing with the gear, and after being scraped into the auger housing by an auger, snow blown upward by a blower. Can be discharged in an arbitrary direction while guiding by rotating the shooter.
[0004]
[Patent Document 1]
JP 2001-193033 A [0005]
[Problems to be solved by the invention]
However, in the conventional snow blower, since the shooter is turned by rotating the gear using an electric motor or the like, the number of parts is increased and the cost is increased. Further, since the turning speed of the shooter depends on the rotation speed of the gear, it takes a relatively long time to turn the shooter to a desired position. Further, a tooth portion is formed on the outer periphery of the shooter base, the tooth portion is engaged with the worm, and the worm is connected to a handle extending to the rear operation portion, whereby the shooter is turned by turning the handle. Is also known, but the number of parts is large and the operation takes time.
[0006]
Therefore, the present invention proposes a shooter for a snow blower that has a simple structure, can turn the shooter quickly, and can reliably hold the shooter at a desired position.
[0007]
[Means for Solving the Problems]
The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.
[0008]
That is, according to the first aspect of the present invention, in a snow blower in which a shooter is rotatably provided on a blower housing containing an auger for snow scraping and a blower for snow throwing, a disk-shaped swivel seat is provided at a swivel base of the shooter. A recess is formed at predetermined intervals on the outer peripheral portion of the swivel seat, and a holding mechanism is provided on the blower housing for urging the engaging body so as to advance and retreat in the recess.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the invention will be described.
[0010]
FIG. 1 is a side view showing an overall configuration of a snow blower according to the present invention, FIG. 2 is a perspective view showing a holding mechanism, FIG. 3 is a side view thereof, and FIG. FIG. 5 is a partial cross-sectional plan view of the holding mechanism showing the engaged state, FIG. 5 is a partial cross-sectional plan view of the holding mechanism showing a state in which the engagement body and the concave portion of the swivel seat are released, and FIG. FIG. 7 is a side view showing an example of the holding mechanism, FIG. 7 is a partial cross-sectional plan view of the holding mechanism showing a state where the engagement body and the recess of the swivel seat are engaged, and FIG. FIG. 9 is a partial cross-sectional plan view of a holding mechanism showing a state where the engagement is released, and FIG. 9 is a side view showing a holding mechanism of another embodiment.
[0011]
First, the overall configuration of the snow blower 10 will be described with reference to FIG. The snow blower embodying the present invention is applied to a relatively small snow blower.
[0012]
The snow removing machine 10 includes a snow removing section 11 provided at a front portion of the fuselage, a driving section 12 provided behind the snow removing section 11, and a crawler traveling device 13 provided below the driving section 12. And a driving operation unit 14 disposed behind the driving unit 12 and at the rear of the aircraft.
[0013]
The snow removing section 11 has a blower 17 provided inside a blower housing 16 connected to the front of the body frame 15 and an auger housing 18 connected to the front of the blower housing 16. There is provided a scraping auger 19 which is provided so as to be oriented in the direction, and a shooter 21 which is vertically erected above the blower housing 16 so as to be able to turn horizontally. On the upper surface of the blower housing 16, a pipe-shaped discharge port 16 a projects eccentrically to one side from the left and right center and projects upward, and a shooter 21 base (lower part) is rotatably fitted to the upper end of the discharge port 16 a. .
[0014]
A handle 37 extending rearward to the vicinity of the operation unit is attached to the rear surface of the chute 21 in the middle of the vertical direction, and the chute is turned by turning the handle 37 left and right to change the snow throwing direction. I can do it. The turning mechanism of the shooter 21 will be described later in detail.
[0015]
In the snow removing section 11 configured as described above, the snow scraped by the scraping auger 19 toward the substantially right and left directions of the auger housing 18 is bounced upward by the blower 17, and the direction is guided by the shooter 21. So that it can be discharged in any direction. A cap is provided at the upper end of the shooter 21 and connected to the handle 37 via a link or the like. The cap 37 can be turned up and down by operating the handle 37, and the snow throw distance can be adjusted. That is, the handle 37 also serves as a means for changing the snow throwing direction and the snow throwing distance.
[0016]
In the drive unit 12, a transmission is provided inside the body frame 15, and an engine 22 is mounted on the upper part of the body frame 15. The power of the engine 22 is output from the output shaft 22 a and transmitted to the snow removing unit 11 and the traveling device 13. The blower 17 and the scraping auger 19 are driven to rotate by the power transmitted to the snow removing unit 11. The power transmitted to the traveling device 13 is transmitted to the drive shaft 23 after being shifted by the transmission, and the drive sprockets 25 fitted to the drive shaft 23 are driven to rotate.
[0017]
A drive shaft 23 on which drive sprockets 25 are fitted is rotatably supported in a lower part of the body frame 15, and driven sprockets 26 are fitted on a rear portion of the body frame 15. After that, the axle 24 is rotatably supported by a horizontal support. An endless crawler belt 31 is wound around the driving sprocket 25 and the driven sprocket 26 to form a crawler. The crawler traveling device 13 is driven by the pair of left and right crawlers to be driven by the rotation of the driving shaft 23. Is configured.
[0018]
In the driving operation unit 14, a steering handle 32 projects obliquely rearward and upward from rear portions on both sides of the body frame 15, and upper and lower operation boxes 33 and 52 are arranged between the steering handles 32 configured in a U-shape in plan view. Is established. The upper operation box 33 includes a traveling clutch lever 35 for performing an on / off operation of transmission from the engine 22 to the traveling device 13 and a snow removing clutch for performing an on / off operation of transmission from the engine 22 to the snow removing unit 11. A lever 39 and the like are arranged. A traveling speed change lever 38 for performing a speed change operation by the transmission is provided in the lower operation box 52.
[0019]
The traveling clutch lever 35 is configured to be able to grip this lever 35 while gripping the steering handle 32. The lever 35 is a deadman clutch lever that operates when gripping with the steering handle 32 and stops when released. .
[0020]
The traveling clutch lever 35 and the snow removing clutch lever 39 are both provided near the steering handle 32, and both the traveling clutch lever 35 and the snow removing clutch lever 39 are biased to the clutch OFF operation position, and the snow removing clutch is operated. The lever 39 can be locked at the snow removal clutch ON operation position.
[0021]
Next, a turning mechanism of the shooter 21 will be described with reference to FIGS.
[0022]
A swivel seat 20 is provided integrally with a lower portion serving as a swivel base of the shooter 21. The swivel seat 20 has a plurality of recesses 20a, 20a,. Alternatively, it is formed like a gear, and the space between the concave portions 20a is formed in a mountain shape. A rotation holding mechanism of the shooter 21 of the present invention is provided on the upper side of the blower housing 16 on the side of the turning seat 20. That is, the holding mechanism is a mechanism for urging the engaging body into the recess 20 a so as to be able to advance and retreat, and the engaging body is attached to the support member 42.
[0023]
That is, the inverted L-shaped fixing member 41 in side view is fixed on the blower housing 16 on the side of the swivel seat 20, and the U-shaped supporting member 42 is attached to the fixing member 41. A U-shaped notch 41b is formed in the protruding end portion 41a of the fixing member 41 in the radial direction of the shooter 21, and a screw portion of a convex portion 42a projecting downward from the support member 42 is inserted into the notch 41b. It is mounted so that the position can be adjusted by a nut or the like. It should be noted that a conventional turning motor or turning worm can be attached to the fixing member 41. Further, the support member 42 can be directly fixed to the blower housing 16.
[0024]
The support member 42 is disposed so that the revolving seat 20 faces between the upper plate 42b and the lower plate 42c, with the open side facing the shooter 21, and the convex portion 42a extends downward from the lower surface of the lower plate 42c. Is protruding. The upper end 42b and the lower end 42c of the lower plate 42c of the support member 42 have U-shaped sliding grooves 42d and 42e facing up and down so that the chute 21 side is open. A pin 43 which is formed and is an engaging body is inserted in the sliding grooves 42d and 42e in the vertical direction. The diameter of the pin 43 is slightly smaller than the width of the sliding grooves 42d and 42e so as to be slidable in the groove and to be fit in the recess 20a of the swivel seat 20. In this embodiment, the pin 43 having a circular shape in cross section is used as the engaging body. However, the shape is not particularly limited, and the pin 43 is turned by operating the handle 37 such as a semicircular shape in cross section or a triangular shape. Any shape may be used as long as it is pushed by the oblique side of the concave portion 20a when it moves and retreats, and is fitted and held in the concave portion 20a when not operated.
[0025]
One end of a support shaft 44 is orthogonally fixed to the upper and lower portions of the pin 43, and the other end of the support shaft 44 extends in parallel between the upper plate 42 b and the lower plate 42 c of the support member 42 to support the support member 42. The member 42 is slidably inserted into the upper and lower portions of the side plate 42f. A male screw is formed at an end of the support shaft 44, and the support shaft 44 is fixed by a nut 45 or the like so as not to come off from the side plate 42f. The nut 45 is a W nut in this embodiment, but is not particularly limited, and a U nut or the like may be used. The holding position can be adjusted by rotating the nut 45 to change the position of the pin 43 or by changing the position of the support member 42 in the notch 41b of the fixing member 41.
[0026]
A spring member 46 is disposed on the outer periphery of the support shaft 44, and one end of the spring member 46 is in contact with the inner side surface of the side plate 42 f of the support member 42, and the other end is a vertically intermediate portion of the pin 43. And is hooked after being externally fitted to a convex portion 43a provided integrally with the boss. The pin 43 is urged toward the shooter 21 by the urging force of the spring member 46. Thus, the pin 43 is guided by the sliding grooves 42d and 42e, and the support shaft 44 is guided by the insertion hole of the side plate 42f, so that the shooter 21 can slide in the radial direction.
[0027]
The holding mechanism only needs to be configured so that the engaging body is urged into the concave portion 20a so as to be able to advance and retreat, so that only the pin 43 can be slidable as described below. In this case, as shown in FIGS. 6, 7 and 8, the elongated holes 42g and 42h formed in the upper plate 42b and the lower plate 42c of the support member 42 are located above and below the swivel seat 20 at the end of the shooter 21 side. The pin 43 is inserted vertically into the elongated holes 42g and 42h. One end of a support shaft 62 is inserted in the upper and lower portions of the pin 43 in a perpendicular direction, and the pin 43 is slidably supported by the support shaft 62. The other end of the support shaft 62 extends in parallel between the upper plate 42b and the lower plate 42c, and is fixed to a middle part of the side plate 42f of the support member 42 in the vertical direction. A spring member 63 is provided on the outer periphery of the support shaft 62, and one end of the spring member 63 is in contact with the inner side surface of the side plate 42 f of the support member 42, while the other end is integrated with the pin 43 in the vertical middle part. The pin 43 is urged toward the shooter 21 by the urging force of the spring member 63 after being externally fitted to the convex portion 43a provided on the outer surface. Thus, only the pin 43 is slid in the radial direction of the shooter 21 while being guided in the elongated holes 42g and 42h, and is engaged with the recess 20a.
[0028]
Further, the upper and lower ends of the pin 43 may be pivotally supported, and the other end may be biased by a biasing member such as a spring. Further, as shown in FIG. 9, a configuration is also possible in which a ball 55 is used instead of a pin, the ball 55 and a spring 56 are housed in a pipe 57, and the ball 55 is engaged with the recess 20a.
[0029]
The pin 43 is urged toward the revolving seat 20 by the urging force of the spring member 46 and is engaged with one of the recesses 20a. At this time, since the pin 43 is constantly urged by the spring member 46 in the direction of engaging with the concave portion 20a, the engaged state between the pin 43 and the concave portion 20a is maintained. Therefore, the swivel seat 20, that is, the shooter 21, is held so as not to freely swing from that position.
[0030]
In such a configuration, the handle 37 attached to the rear portion of the shooter 21 as the turning operation means is turned in the left-right direction, so that the discharge direction from the shooter 21 can be turned in any direction. . When the shooter 21 turns, the turning seat 20 also turns integrally with the shooter 21, and the turning of the turning seat 20 causes the pin 43 to turn against the urging force of the spring member 46 as shown in FIG. 5. When the pin 43 is pushed along the sliding grooves 42d and 42e on the opposite side to the seat 20, the engagement state between the pin 43 and the concave portion 20a of the turning seat 20 is released. In this way, the turning operation of the handle 37 allows the shooter 21 to turn in an arbitrary direction.
[0031]
When the shooter 21 is turned to a desired position and then the handle 37 is released, the pin 43 is urged toward the turning seat 20 by the urging force of the spring member 46, and the recesses 20a of the turning seat 20 are formed. And the pin 43 is engaged again, and the shooter 21 is held so as not to rotate. Note that since no rotational force is generated in the shooter 21 itself, a large force is not required to hold the shooter 21. Thus, the shooter 21 can be made compact with a simple configuration as in this embodiment. Further, since the handle 37 extends rearward from the center of rotation, the force for rotating the shooter 21 can be reduced.
[0032]
As described above, since the means for turning the shooter 21 is extended to the operation unit distant from the center of turning, it can be operated with a small force, and can be easily operated by reaching out from the steering handle. Then, instead of indirectly turning the shooter 21 using an electric motor or the like as in the related art, the worker can directly use the turning operation means such as the handle 37 attached to the shooter 21. , You can quickly change the snow throwing direction. Further, since the means for holding the rotation of the shooter 21 is provided at a position close to the center of rotation and separately from the turning operation means, the means for holding the shooter 21 can be configured with a simpler structure than in the prior art. The number of parts in the turning mechanism can be reduced, and the cost can be reduced. Further, since the holding means has a structure in which the pin 43 is fitted into the recess 20a, the shooter 21 can be securely held, and when the snow throwing direction is changed, the space between the recess 20a and the recess 20a has a mountain shape. Therefore, the pin 43 can easily move over the slope of the concave portion 20a while retreating along the groove and change the angle.
[0033]
【The invention's effect】
The present invention is configured as described above, and has the following effects.
[0034]
More specifically, as set forth in claim 1, in a snow blower in which a shooter is rotatably provided on a blower housing containing an auger for snow scraping and a blower for snow throwing, a disk-shaped swivel seat is provided on a swivel base of the shooter. Are formed integrally at predetermined intervals in the outer peripheral portion of the swivel seat, and a holding mechanism is provided on the blower housing for urging the engaging body so as to be able to advance and retreat in the concave portion. Can be reliably held. Therefore, the turning operation means is provided separately from the means for holding the shooter, and the operator can directly operate the shooter to turn, and the snow throwing direction can be changed quickly.
[0035]
Further, since the means for holding the rotation of the chute is provided at a position close to the center of rotation and separately from the turning operation means, the means for holding the chute can be configured with a simpler structure than in the prior art. Therefore, the number of parts in the turning mechanism of the shooter can be reduced, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a side view showing the overall configuration of a snow blower according to the present invention.
FIG. 2 is a perspective view showing a holding mechanism.
FIG. 3 is a side view of the same.
FIG. 4 is a partial cross-sectional plan view of the holding mechanism showing a state in which the engagement body and the concave portion of the turning seat are engaged.
FIG. 5 is a partial cross-sectional plan view of the holding mechanism showing a state in which the engagement between the engaging body and the concave portion of the turning seat is released.
FIG. 6 is a side view showing a holding mechanism according to another embodiment.
FIG. 7 is a partial cross-sectional plan view of the holding mechanism showing a state where the engagement body and the concave portion of the turning seat are engaged with each other.
FIG. 8 is a partial cross-sectional plan view of the holding mechanism showing a state in which the engagement between the engaging body and the concave portion of the turning seat is released.
FIG. 9 is a side view showing a holding mechanism of another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Snow remover 16 Blower housing 17 Blower 19 Auger 20 Swivel seat 20a Depression 21 Shooter 43 Pin

Claims (1)

In a snow blower having a shooter pivotably mounted on a blower housing containing an auger for snow scraping and a blower for snow throwing, a disk-shaped pivot seat is integrally provided at a pivot base of the chute. A recessed portion is formed at predetermined intervals on an outer peripheral portion of the blower, and a holding mechanism is provided on the blower housing, the retaining mechanism being configured to urge the engaging body so as to be able to advance and retreat in the recessed portion, on the blower housing.

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