JP2008285896A - Front shutter mechanism of snow blower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front shutter mechanism of a snow blower which can elevate or lower a shutter plate without manual operation by an operator. <P>SOLUTION: A left portion 21 of the front shutter mechanism 20 comprises: a left lever 27 which is fixed in a vertically oscillatable manner to a left side plate 22 of an auger housing 19 via a pin 25; a left V-shaped connecting link 41 which establishes connection between a pin 32 fixed to a front portion 28 of the left lever 27 and a pin 36 arranged on a top board 33 of the auger housing 19, and presents a V-shape by using link members 37 and 38, and makes an angle of a V-shaped valley variable; a first shutter plate 49 which is provided for the link 41; and a second shutter plate 53 which is mounted at the tip 51 of the left lever 27 in such a manner as to be rotatable from a vertical attitude to a horizontal attitude of abutting on a stopper 29. The front shutter mechanism 20 of the snow blower 10, which can elevate or lower the second shutter plate 53 and the first shutter plate 49 without the manual operation by the operator is provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a front shutter mechanism of a snow remover that is provided in an auger housing and closes a front opening of the auger housing during non-snow removal work and opens a front opening of the auger housing during snow removal work.

  The auger type snow blower moves forward and takes in snow from the front opening of the auger housing, collects the collected snow in the center with the left and right augers, sends the collected snow to the blower, accelerates it with the blower, and discharges the snow from the shooter To do. During the snow removal operation, the front opening of the auger housing is closed with snow. On the other hand, the front opening of the auger housing remains open during the non-snow removal operation.

  For example, when an auger type snowplow moves from a snowy mountain to a neighboring snowy mountain, the front opening remains open, and there is a possibility that an abandoned item or the like enters the auger housing. Therefore, it is desirable to close the front opening during non-snow removal work.

A snowplow that can close the front opening of the auger housing has been proposed (see, for example, Patent Document 1).
Utility Model Registration No. 31007039 (FIG. 1)

Patent document 1 is demonstrated based on the following figure.
FIG. 5 is a diagram for explaining the basic configuration of the prior art. In FIG. 5A, the snowplow 100 includes an auger 101, an auger housing 102 covering the auger 101, and a front shutter provided on the auger housing 102. And a mechanism 103. The front shutter mechanism 103 includes a geared motor 104 attached to the upper surface of the auger housing 102, a chain 105 attached to the output shaft of the geared motor 104, and a front surface of the auger housing 102 connected to the tip of the chain 105. And a shutter plate 107 that is rotatably connected to a support plate 106 attached thereto.

  FIG. 5B is an operation diagram of the front shutter mechanism 103. For example, the driver presses the lift button to activate the geared motor 104, and the chain 105 is pulled by the geared motor 104 to raise the shutter plate 107. As a result, the auger 101 is exposed and snow can be removed. Further, after the snow removal, the driver presses the lowering button to activate the geared motor 104, and the chain 105 is returned to the front of the snow removal machine 100 by the geared motor 104, whereby the shutter plate 107 can be lowered as indicated by an arrow. Thus, the front shutter mechanism 103 returns to the state of (a).

  By the way, in the snow remover 100 of Patent Document 1, the driver may manually operate raising or lowering the shutter plate 107 of the front shutter mechanism 103 in parallel with the operation of the snow remover 100. Such a snowplow 100 induces a manual erroneous operation such as lowering the shutter plate 107 before snow removal or raising the shutter plate 107 after snow removal. In this case, the operability of the front shutter mechanism 103 is deteriorated.

  Therefore, development of a front shutter mechanism for a snowplow that can raise or lower the shutter plate without manual operation by the driver (operator) is required.

  An object of the present invention is to provide a front shutter mechanism of a snowplow that can raise or lower a shutter plate without manual operation by an operator.

  The invention according to claim 1 is provided in the auger housing in a front shutter mechanism of a snowplow that closes the front opening of the auger housing during non-snow removal work and opens the front opening of the auger housing during snow removal work. The front shutter mechanism includes a left lever and a right lever that are fixed to the left wall portion and the right wall portion of the auger housing so as to be swingable up and down via pins, and extend forward, and from the pins of the auger housing A left V-shaped connecting link that connects the high part and the front part of the left lever, presents a V-shape, and the angle of the V-shaped valley can be freely changed, and a part higher than the pin of the auger housing and the right Connected to the front part of the lever, presenting a V-shape, the angle of the valley of the V-shape can be changed, and the right V-shaped connection link and the left V-shaped connection link horizontally The first handed A shutter plate and a second shutter plate horizontally extending between the tip of the left lever and the tip of the right lever, and when an upward force acts on the tips of the left lever and the right lever via the second shutter plate, When the second shutter plate and the first shutter plate are raised to open the front opening of the auger housing and the upward force disappears, the second shutter plate and the first shutter plate are lowered by their own weight and the front portion of the auger housing The opening is closed.

  The invention according to claim 2 is characterized in that the second shutter plate is provided at the tip of the left lever and the tip of the right lever so as to be rotatable from a vertical posture to a horizontal posture.

  The invention according to claim 3 is characterized in that the left lever and the right lever extend obliquely upward from the left wall portion and the right wall portion of the auger housing.

  In the invention according to claim 1, the front shutter mechanism includes a left lever and a right lever, a left V-shaped connection link and a right V-shaped connection link, a first shutter plate, and a second shutter plate. When the snowplow is advanced toward the snow mountain and the upward force from the snow acts on the tip of the left lever and the right lever, the second shutter plate and the first shutter plate rise, and when the upward force disappears, the weight is reduced. The second shutter plate and the first shutter plate are lowered. Therefore, the shutter plate can be raised or lowered only by the upward force from the snow without being manually operated by the operator.

  According to the first aspect of the present invention, it is possible to provide a front shutter mechanism of a snowplow that can raise or lower the shutter plate without manual operation by an operator.

  In the invention according to claim 2, the second shutter plate is provided at the tip of the left lever and the tip of the right lever so as to be rotatable from a vertical posture to a horizontal posture. When the snowplow is advanced toward the snowy mountain, the second shutter plate hits the snow and rotates from a vertical posture to a horizontal posture. If the second shutter plate is horizontal, an upward force is likely to act on the second shutter plate, and the second shutter plate can be quickly raised.

  In the invention according to claim 3, the left lever and the right lever extend obliquely upward from the left wall portion and the right wall portion of the auger housing. When the snowplow is advanced toward the snow mountain, the upward force from the snow acts perpendicularly on the left and right levers that extend diagonally. In addition, since a horizontal component force and a vertical component force act on the left lever and the right lever, the left lever and the right lever are likely to rise as compared with the case of being horizontal. Therefore, it is possible to provide a front shutter mechanism of a snow remover in which the left lever and the right lever are easily raised.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. Note that “front”, “rear”, “left”, and “right” described below indicate directions viewed from the operator who operates the snowplow.

  FIG. 1 is a perspective view of a snowplow according to the present invention. A snowplow 10 is supported by travel units 12 and 12 provided on the left and right sides for traveling on snow 11 and supported by these travel units 12 and 12. An airframe 13 incorporating a drive source (not shown), a cover 14 provided on the upper portion of the airframe 13, an operation panel 15 provided on the upper portion of the airframe 13 so as to be arranged behind the cover 14, and this operation An operation handle 16 provided at the rear part of the machine body 13 so as to be arranged behind the panel 15, a blower part 17 provided so as to protrude forward from the front part of the machine body 13, and a shooter provided on the left side of the blower part 17 Part 18, an auger housing 19 provided at the tip of the blower part 17, and a front shutter mechanism 20 provided in the auger housing 19. It is a snow removal machine of the type to maneuver.

  FIG. 2 is an enlarged view of two parts in FIG. 1, and the left part 21 of the front shutter mechanism 20 is fixed to a concave part 23 of the left side plate 22 as a left wall part of the auger housing 19 via a support plate 24. A lever mounting parallel pin 25, a left lever 27 having, for example, a U-shaped cross section, which is attached to the lever mounting parallel pin 25 by a split pin 26 so as to be swingable up and down and extends forward, and a front portion of the left lever 27 28, for example, on the top plate 33 of the auger housing 19 as a part higher than the lever mounting parallel pin 25. A post-link mounting parallel pin 36 fixed to a support plate 35 provided via a contact plate 34 and a rear end of the link post-mounting parallel pin 36 that can be rotated by, for example, a split pin 26 The front link 38 and the link front mounting parallel pin 32 are configured to include a front link 38 rotatably attached to the front link 38 by, for example, a split pin 26, and the rear end of the front link 38 is fixed to the front end of the rear link 37. For example, the front link 38 and the rear link 37 are V-shaped by being rotatably attached to the link connecting parallel pin 39 with, for example, the split pin 26, and the left V-shaped connecting link 41 in which the angle of the V-shaped valley can be freely changed, A post-spring mounting parallel pin 43 fixed to the support plate 42 provided on the contact plate 34 on the left side of the support plate 35 and a spring front mounting parallel pin fixed to the support bar 44 provided at the rear portion of the front link 38. 45 and a tension coil spring 48 having a front hook 46 that hangs on the pre-spring mounting parallel pin 45 and a rear hook 47 that hangs on the post-spring mounting parallel pin 43.

  In the above description, the lever mounting parallel pin 25 is provided in the recess 23 of the left side plate 22 via the support plate 24. However, the left side plate may be flat and the lever mounting parallel pin 25 may be mounted on this plane. .

In addition, the cross-sectional shape of the left lever 27 is a U-shaped cross-section in the above, but a rectangular cross-section or a B-shaped cross-section can be adopted, so that it can be changed to another cross-sectional shape.
The stopper 29 has a cylindrical shape in the above, but may have a square pipe shape or a rod shape.

  Furthermore, although the mounting position of the support plate 35 that supports the post-link mounting parallel pin 36 is above the top plate 33 of the auger housing 19, the top plate 33 of the auger housing 19 is extended forward, and this extended portion Since it can be attached to the other lever-attached parallel pin 25, it can be changed to a higher part.

  In addition, the tension coil spring 48 is provided as the front shutter mechanism 20 made of a material having a large specific gravity, but may not be provided when the front shutter mechanism 20 is made of a material having a low specific gravity.

  Although the detailed structure of the front shutter mechanism 20 has been described only with the left part 21 in the above, the structure of the right part (not shown) is the same as that of the left part 21, and the description of the right part is omitted.

  The left end of the first shutter plate 49 is attached to the front link 38 of the left V-shaped connecting link 41, and the right end of the first shutter plate 49 is attached to the front link of the right V-shaped connecting link (not shown). That is, the first shutter plate 49 is attached so as to pass horizontally to the front link of the right V-shaped connecting link and the front link 38 of the left V-shaped connecting link 41.

  Further, a left shutter mounting parallel pin 52 is attached to the front end 51 of the left lever 27 so as to protrude rightward (diagonally upward in the figure), and the left end 54 of the second shutter plate 53 is connected to the left shutter mounting parallel pin 52. For example, the right end of the second shutter plate 53 (not shown) that is rotatably attached by, for example, a split pin (not shown) and extends horizontally from the left end 54 is parallel to the right shutter attached to the tip of the right lever (not shown). For example, the pin is rotatably attached to the pin with a split pin.

  The left lever 27 extends from the lever mounting parallel pin 25 provided on the left side plate 22 of the auger housing 19 via the support plate 24 obliquely upward toward the front with respect to the horizontal line 55. And This structure is the same for a right lever (not shown).

  Reference numeral 56 denotes a mounting bolt, 57 denotes a washer, 58 denotes a support rod attached to the front link 38 to support the first shutter plate 49, 59 denotes an auger shaft, 61 denotes an auger, and 62 denotes a sled portion that slides on the snow 11.

  When an upward force is applied to the tip of the left lever 27, the left lever 27 rotates clockwise around the lever mounting parallel pin 25 to the position of the two-dot chain line, and at the same time the left V-shaped connecting link 41 is V-shaped. As the angle of the valley becomes smaller, the front link 38 and the rear link 37 approach each other. As a result, the second shutter plate 53 and the first shutter plate 49 are raised and the front opening 63 of the auger housing 19 is opened.

  When the upward force disappears, the left lever 27 rotates by its own weight about the lever mounting parallel pin 25 in the counterclockwise direction to the position of the solid line, and at the same time, the left V-shaped connecting link 41 has an angle of the V-shaped valley. Becomes larger and the front link 38 and the rear link 37 are separated. As a result, the second shutter plate 53 and the first shutter plate 49 are lowered and the front opening 63 of the auger housing 19 is closed. The above action can also be obtained with a right lever (not shown).

  When a horizontal force is applied from the front toward the lower end of the second shutter plate 53, the second shutter plate 53 is indicated by a two-dot chain line in the counterclockwise direction around the left shutter mounting parallel pin 52 and the right shutter mounting parallel pin. Rotate to the position. At this time, the second shutter plate 53 hits a stopper 29 provided on the front portion 28 of the left lever 27 and stops in a horizontal posture.

When the horizontal force disappears, the second shutter plate 53 rotates by its own weight about the left shutter mounting parallel pin 52 and the right shutter mounting parallel pin to a solid line position clockwise in the figure. That is, the second shutter plate 53 is characterized in that it is provided at the tip 51 of the left lever 27 and the tip of the right lever so as to be rotatable from a vertical posture to a horizontal posture held against the stopper 29.
Next, the operation of the front shutter mechanism 20 of the snowplow having the above configuration will be described.

  FIG. 3 is an operation diagram of the front shutter mechanism according to the present invention before snow removal. In FIG. 3A, the operator 64 rotates the auger 61 as shown by the arrow (1), and the snow remover 10 is moved to the snow mountain. Advance toward 65 as shown by arrow (2). Thereafter, when the lower end of the second shutter plate 53 comes into contact with the snow mountain 65, the second shutter plate 53 rotates as indicated by an arrow (3).

  (B) corresponds to an enlarged view of the front shutter mechanism 20, and when the snowplow 10 is further advanced toward the snow mountain 65 as indicated by an arrow (4), the second shutter plate 53 is moved to the snow mountain 65. An upward force is applied to the left lever 27 by climbing up the snow mountain 65. As a result, the left lever 27 rotates in the clockwise direction as indicated by the arrow (5), and the front link 38 and the rear link 37 of the left V-shaped connecting link 41 rotate as indicated by the arrows (6) and (7).

  FIG. 4 is an operation diagram of the front shutter mechanism according to the present invention during and after snow removal. When the snow remover 10 is continuously advanced as shown by arrow (8) in FIG. Since the front link 38 and the rear link 37 of the V-shaped link 41 and the second shutter plate 53 are raised and the front opening 63 of the auger housing 19 is opened, snow can be collected by the auger 61 and snow removal work can be performed. .

  In (b), when the snowplow 10 is moved forward as shown by the arrow (9) even after the snow removal work is completed, the snow disappears and the upward force disappears. Therefore, the left lever 27 and the front link 38 of the left V-shaped connecting link 41 are lost. The rear link 37 and the second shutter plate 53 are lowered by their own weight as indicated by an arrow (10), and the front opening 63 of the auger housing 19 is closed. Thereafter, the second shutter plate 53 rotates as indicated by an arrow (11) and returns to the vertical posture from the horizontal posture indicated by the two-dot chain line.

  The front shutter mechanism 20 includes a left lever 27 and a right lever, a left V-shaped link 41 and a right V-shaped link, a first shutter plate (reference numeral 49 in FIG. 2), and a second shutter plate 53. When the snowplow 10 is moved forward toward the snow mountain 65 and the upward force from the snow acts on the tip of the left lever 27 and the right lever, the second shutter plate 53 and the first shutter plate rise and the upward force disappears. Then, the second shutter plate 53 and the first shutter plate are lowered by their own weight. Therefore, the second shutter plate 53 and the first shutter plate can be raised or lowered only by the upward force from the snow without being manually operated by the operator.

  Therefore, it is possible to provide the front shutter mechanism 20 of the snow removal machine 10 that can raise or lower the second shutter plate 53 and the first shutter plate without manual operation by an operator.

  The second shutter plate 53 is provided at the front end of the left lever 27 and the front end of the right lever so as to be rotatable from a vertical posture to a horizontal posture that is kept in contact with the stopper (reference numeral 29 in FIG. 2). When the snowplow 10 is moved forward toward the snow mountain 65, the second shutter plate 53 hits the snow and rotates from a vertical posture to a horizontal posture. If the second shutter plate 53 becomes horizontal, an upward force is likely to act on the second shutter plate 53, and the second shutter plate 53 can be quickly raised.

  The left lever 27 and the right lever extend obliquely upward from the left side plate 22 and the right side plate of the auger housing 19. When the snowplow 10 is moved forward toward the snow mountain 65, the upward force from the snow acts vertically on the left lever 27 and the right lever that extend obliquely. In addition, since a horizontal component force and a vertical component force act on the left lever 27 and the right lever, the left lever 27 and the right lever are likely to rise as compared with the case of being horizontal. Therefore, it is possible to provide the front shutter mechanism 20 of the snow removal machine 10 in which the left lever 27 and the right lever are easily raised.

The left lever, right lever, left V-shaped link, right V-shaped link used in the present invention,
In the embodiment, the second shutter plate is attached by inserting the split pin into the parallel pin. However, it is possible to employ a method in which a bolt is provided at the tip of the parallel pin and a nut is screwed into the bolt. Therefore, it can be changed to another mounting method.

  The front shutter mechanism of the present invention is suitable for a snow remover.

1 is a perspective view of a snowplow according to the present invention. FIG. 2 is an enlarged view of part 2 of FIG. 1. It is an effect | action figure before snow removal of the front part shutter mechanism which concerns on this invention. It is an operation view during and after snow removal of the front shutter mechanism according to the present invention. It is a figure explaining the basic composition of the conventional technology.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Snow blower, 19 ... Auger housing, 20 ... Front shutter mechanism, 22 ... Left side plate (left wall part), 25 ... Lever attachment parallel pin (pin), 27 ... Left lever, 28 ... Front part of left lever, 29 ... Stopper, 32 ... Link front mounting parallel pin, 33 ... Top plate of auger housing (part higher than auger housing pin), 36 ... Link rear mounting parallel pin, 37 ... Rear link, 38 ... Front link, 39 ... Link Connecting parallel pin, 41 ... Left V-shaped connecting link, 49 ... First shutter plate, 51 ... Left end of left lever, 52 ... Left shutter mounting parallel pin, 53 ... Second shutter plate, 55 ... Horizontal line, 63 ... Auger housing Front opening.

Claims (3)

In the front shutter mechanism of the snow remover provided in the auger housing and closing the front opening of the auger housing during non-snow removal work and opening the front opening of the auger housing during snow removal work,
The front shutter mechanism includes a left lever and a right lever, which are fixed to the left wall and the right wall of the auger housing so as to be swingable up and down via pins and extend forward, and the pin of the auger housing A left V-shaped connecting link that connects the higher portion and the front part of the left lever, presents a V-shape, and the angle of the V-shaped valley can be freely changed, a portion higher than the pin of the auger housing, and the The right lever is connected to the front of the right lever, has a V shape, and the V-shaped valley angle is freely changeable. The right V-shaped connection link and the left V-shaped connection link are horizontal. A first shutter plate passed to the left lever, and a second shutter plate horizontally passed to the tip of the left lever and the tip of the right lever,
When an upward force acts on the tip of the left lever and the right lever through the second shutter plate, the second shutter plate and the first shutter plate are lifted to open the front opening of the auger housing, and the upward force disappears. Then, the front shutter mechanism of the snowplow is characterized in that, by its own weight, the second shutter plate and the first shutter plate are lowered to close the front opening of the auger housing.   The front shutter mechanism of the snowplow according to claim 1, wherein the second shutter plate is provided at a tip of the left lever and a tip of the right lever so as to be rotatable from a vertical posture to a horizontal posture.   The front shutter mechanism of the snowplow according to claim 1 or 2, wherein the left lever and the right lever are extended obliquely upward from the left wall portion and the right wall portion of the auger housing.

Images