JP2015017377A - Snow removal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snow removal device that is installed on a roof and that can shove snow aside in a plurality of directions.SOLUTION: A snow removal device, which is installed on a roof, includes: a screw that has a blade spirally provided around a rotating shaft; and a driving mechanism for rotatively driving the screw. The screw has a first area in which the blade is wound in a clockwise direction, and a second area in which the blade is wound in a counterclockwise direction.

Description

  The present invention relates to a snow removal device.

  In areas where there is a lot of snow, residents and traders use the tools such as scoops to drop snow on the roofs of houses. Such snow-removal work is a heavy work and a high place work. In order to perform such snow removal work easily, many snow removal apparatuses have been proposed.

  For example, Patent Document 1 describes a snow removal device that moves snow from a roof by attaching a spiral snow removal blade to a rotation shaft and rotating the snow removal blade together with the rotation shaft. By using such a snow removal device, it is possible to perform snow removal even if the operator does not climb the roof.

JP 2012-172335 A

  However, in the snow removal device of Patent Document 1, a blade wound in the same direction is provided over the entire length of the rotating shaft. For this reason, the snow is always moved in only one direction along the rotation axis, and the snow accumulated on the roof is accumulated only on one side of the roof. Thus, in the conventional snow removal device, it was not possible to scrape snow into a plurality of directions on the roof.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to enable snow to be scraped in a plurality of directions in a snow removal device installed on a roof.

  The present invention adopts the following configuration as means for solving the above-described problems.

  A first aspect of the present invention is a snow removal device provided on a roof, comprising a screw having a blade spirally arranged around a rotation axis, and a drive mechanism for rotationally driving the screw, wherein the screw includes the blade Has a first area wound clockwise and a second area where the blade is wound counterclockwise.

  According to a second invention, in the first invention, the drive mechanism uses a motor that generates power to move the screw, a rotation drive unit that rotates the screw by the power of the motor, and a power of the motor. A configuration is adopted in which the screw is provided with a linear motion drive unit that linearly moves the screw from the top of the roof toward the eave.

  According to a third aspect of the present invention, in the second aspect of the present invention, the snow is arranged near the top of the roof with respect to the screw and moved by the linear drive unit together with the screw to bring the snow on the roof to the eaves. A configuration is adopted in which an extruding part that is pushed out is provided.

  According to a fourth aspect of the present invention, in the third aspect of the present invention, a configuration is adopted in which a plate member attached to the bottom of the push-out portion and having a tip projecting downward from the screw and toward the eaves side is employed.

  According to the present invention, the screw that is rotationally driven includes the first region and the second region in which the winding direction of the spiral blade is different. For this reason, when the screw is rotated, the direction in which the snow is moved in the first region of the screw is opposite to the direction in which the snow is moved in the second region of the screw. Therefore, according to the present invention, it is possible to scrape snow in a plurality of directions in the snow removal device installed on the roof.

1 is an overall perspective view of a snow removal device according to an embodiment of the present invention. It is a front view of the screw with which the snow removal apparatus in one embodiment of the present invention is provided. It is a perspective view of the right side unit of the drive mechanism with which the snow removal apparatus in one embodiment of the present invention is provided. It is a perspective view of the left side unit of the drive mechanism with which the snow removal apparatus in one embodiment of the present invention is provided. It is a schematic diagram which shows the side surface of the guide part with which the snow removal apparatus in one Embodiment of this invention is provided.

  Hereinafter, an embodiment of a snow removal device according to the present invention will be described with reference to the drawings. In the following drawings, the scale of each member is appropriately changed in order to make each member a recognizable size.

  FIG. 1 is an overall perspective view of a snow removal device 1 of the present embodiment attached to a roof Y. As shown in this figure, the snow removal device 1 of the present embodiment includes a screw 2, a drive mechanism 3, and a guide portion 4. Such a snow removal device 1 of this embodiment is attached to the roof of a private house, for example, and performs snow lowering when it snows on the roof.

  FIG. 2 is a front view of the screw 2. As shown in this figure, in this embodiment, the rotary shaft 2a, the left blade 2b (blade), and the right blade 2c (blade) are configured. As shown in FIG. 1, the rotation shaft 2 a is arranged so that the axial direction is horizontal and parallel to the upper surface of the roof Y, and is connected to the drive mechanism 3. The rotary shaft 2a is rotated by the drive mechanism 3 and is moved from the top of the roof Y toward the eaves.

  As shown in FIG. 2, the screw 2 is equally divided into a left region Ra (first region) and a right region Rb (second region) in the axial direction. The left blade 2b is a blade provided in the left region Ra, and is wound spirally around the rotation shaft 2a. The right blade 2c is a blade provided in the right region Rb and is wound spirally around the rotation shaft 2a.

  Here, in the present embodiment, the left blade 2b is wound clockwise toward the right side in the axial direction when viewed from the left side of FIG. On the other hand, the right blade 2c is wound counterclockwise toward the right side in the axial direction when viewed from the left side of FIG. That is, in the present embodiment, the left blade 2b provided in the left region Ra of the screw 2 and the right blade 2c provided in the right region Rb of the screw 2 are wound in opposite directions.

  In such a screw 2, the rotating shaft 2a is rotated in one direction (right direction as viewed from the left side in FIG. 1). At this time, since the left blade 2b in the left region Ra and the right blade 2c in the right region Rb are wound in opposite directions, the snow transport direction in the left region Ra is a direction toward the left side in FIG. The snow transport direction in the right region Rb is the direction toward the right side in FIG.

  The drive mechanism 3 includes a left unit 3a, a right unit 3b, and a shaft 3c that connects the left unit 3a and the right unit 3b. FIG. 3 is a perspective view showing the internal structure of the cover 3a5 provided in the left unit 3a. As shown in this figure, the left unit 3a includes a motor 3a1, a linear drive unit 3a2, a gear box 3a3, a rotation drive unit 3a4, a cover 3a5, and a bearing unit 3a6.

  The motor 3a1 is composed of a geared motor, for example, and is disposed outside the cover 3a5. The motor 3a1 generates power for rotating and linearly moving the screw 2 when electric power is supplied from a power source (not shown).

  As shown in FIG. 3, the linear motion drive unit 3 a 2 is installed near the top of the roof Y and directly connected to the output shaft of the motor 3 a 1, the sprocket 12 installed near the eaves of the roof Y, A drive belt 13 that is turned around the sprocket 11 and the sprocket 12 and a shaft support portion 14 that is fixed to the drive belt 13 and supports the rotation shaft 2a of the screw 2 are provided.

  In such a linear drive unit 3a2, when power is transmitted from the motor 3a1 and the sprocket 11 is rotationally driven, the drive belt 13 is rotated in a state of being spun around the sprocket 11 and the sprocket 12, and the shaft support unit 14 is rotated. It is moved in the direction connecting the top of the roof Y and the eaves. As a result, the screw 2 on which the rotary shaft 2a is pivotally supported by the pivot support 14 is moved up and down along the upper surface of the roof Y in the direction connecting the top of the roof Y and the eaves. Such a linear motion drive unit 3a2 linearly moves the screw 2 from the top of the roof Y toward the eaves by the power of the motor 3a1 when performing snow removal.

  The gear box 3a3 connects the output shaft of the motor 3a1 and the shaft 3c, and transmits the rotational power output from the motor 3a1 to the shaft 3c as the rotational power in the opposite direction. For example, when the screw 2 is moved from the top of the roof Y toward the eaves, the rotation direction of the motor 3a1 is counterclockwise when viewed from the left side of FIG. For this reason, the gear box 3a3 transmits the rotational power of the motor 3a1 clockwise to the shaft 3c.

  As shown in FIG. 3, the rotation drive unit 3a4 is installed near the top of the roof Y and fixed to the shaft 3c, the sprocket 16 installed near the eaves of the roof Y, the sprocket 15 and the sprocket. An endless belt-like rack gear 17 that is turned around 16 and a pinion 18 that is fixed to the rotary shaft 2a of the screw 2 and meshes with the rack gear 17 are provided.

  In such a rotational drive unit 3a4, when the power of the motor 3a1 is transmitted through the gear box 3a3 and the sprocket 15 is rotationally driven, the rack gear 17 is rotated while being spun around the sprocket 15 and the sprocket 16, The pinion 18 is driven to rotate. As a result, the rotary shaft 2a to which the pinion 18 is fixed is rotationally driven, and the screw 2 is rotated.

  The cover 3a5 covers the linear motion drive unit 3a2, the gear box 3a3, and the rotation drive unit 3a4, and has a slit extending from the top of the roof Y toward the eaves so that the screw 2 can move. The bearing portion 3a6 pivotally supports the sprocket 12 of the linear motion drive portion 3a2 and the sprocket 16 of the rotation drive portion 3a4.

  FIG. 4 is a perspective view showing the internal structure of the cover 3b5 provided in the right unit 3b. As shown in this figure, the right unit 3b includes a bearing portion 3b1, a linear motion drive portion 3b2, a gear box 3b3, a rotation drive portion 3b4, a cover 3b5, and a bearing portion 3b6.

  The bearing portion 3b1 is disposed outside the cover 3b5. This bearing portion 3b1 supports a sprocket 21 (to be described later) of the linear motion drive portion 3b2.

  As shown in FIG. 4, the linear drive unit 3b2 is installed near the top of the roof Y and directly connected to the bearing unit 3b1, the sprocket 22 installed near the eaves of the roof Y, and these A drive belt 23 that is turned around the sprocket 21 and the sprocket 22, and a shaft support portion 24 that is fixed to the drive belt 23 and supports the rotating shaft 2 a of the screw 2.

  In such a linear motion drive unit 3b2, when power is transmitted from the motor 3a1 via the shaft 3c and the sprocket 21 is driven to rotate, the drive belt 23 is rotated in a state of being turned around the sprocket 21 and the sprocket 22. The shaft support 24 is moved in the direction connecting the top of the roof Y and the eaves. As a result, the screw 2 on which the rotary shaft 2a is pivotally supported by the pivot support 24 is moved up and down along the upper surface of the roof Y in the direction connecting the top of the roof Y and the eaves. Such a linear motion drive unit 3b2 linearly moves the screw 2 from the top of the roof Y toward the eaves by the power of the motor 3a1 when performing snow removal.

  The gear box 3b3 connects the shaft 3c and the sprocket 21 of the linear drive unit 3b2, and transmits the rotational power transmitted from the shaft 3c to the sprocket 21 as rotational power in the opposite direction. For example, when the screw 2 is moved from the top of the roof Y toward the eaves, the rotation direction of the shaft 3c is clockwise when viewed from the left side of FIG. For this reason, the gear box 3b3 transmits the rotational power of the motor 3a1 counterclockwise to the sprocket 21.

  As shown in FIG. 4, the rotation drive unit 3b4 is installed near the top of the roof Y and fixed to the shaft 3c, the sprocket 26 installed near the eaves of the roof Y, the sprocket 25, and the sprocket. 26 is provided with an endless belt-like rack gear 27 that is turned around 26, and a pinion 28 that is fixed to the rotating shaft 2 a of the screw 2 and meshes with the rack gear 27.

  In such a rotational drive unit 3b4, when the power of the motor 3a1 is transmitted through the shaft 3c and the sprocket 25 is rotationally driven, the rack gear 27 is rotated in a state of being turned around the sprocket 25 and the sprocket 26, and the pinion 28 is rotationally driven. As a result, the rotary shaft 2a to which the pinion 28 is fixed is rotationally driven, and the screw 2 is rotated.

  The cover 3b5 covers the linear drive unit 3b2, the gear box 3b3, and the rotation drive unit 3b4, and has a slit extending from the top of the roof Y toward the eaves so that the screw 2 can move. The bearing portion 3b6 pivotally supports the sprocket 22 of the linear motion drive portion 3b2 and the sprocket 26 of the rotation drive portion 3b4.

  FIG. 5 is a schematic view of the guide portion 4 as viewed from the side. As shown in this figure, the guide portion 4 is composed of a curved hood-like extrusion portion 4 a that covers the screw 2 from the rear side, and a plate member 4 b that is installed below the screw 2. As shown in FIG. 1 etc., the extrusion part 4a is arrange | positioned near the top part of the roof Y rather than the screw 2, and has the length which reaches | attains the right side unit 3b from the left side unit 3a. Further, the pushing portion 4a is connected to the screw 2 in a state where the rotating shaft 2a of the screw 2 is supported, and is moved together with the screw 2 by the direct drive unit 3a2 and the direct drive unit 3b2. Such an extruding part 4a is moved toward the eaves from the top of the roof Y by the linear motion drive unit 3a2 and the linear motion drive unit 3b2, thereby pushing out snow on the roof Y toward the eaves.

  The plate member 4b is attached to the bottom part of the extrusion part 4a, and the front-end | tip 4b1 is protruded below the screw 2 toward the eaves side. As shown in FIG. 1 etc., the plate member 4b is provided over the full length of the extrusion part 4a. Furthermore, the front end 4b1 of the plate member 4b has a saw-tooth shape. Such a plate member 4b lifts the snow in front of the screw 2 from the roof Y by being moved together with the pushing portion 4a.

  In the snow removal device 1 of this embodiment having such a configuration, for example, when an operator operates a switch (not shown), electric power is supplied by the motor 3a1 to generate power. The power generated by the motor 3a1 is transmitted to the linear drive unit 3a2 and the rotary drive unit 3a4 of the left unit 3a, and further to the linear drive unit 3b2 and the rotary drive unit 3b4 of the right unit 3b via the shaft 3c. Is done.

  When power is transmitted to the linear motion drive unit 3a2 and the linear motion drive unit 3b2, the shaft 3c is lowered from the top of the roof Y toward the eaves. Further, when power is transmitted to the rotational drive unit 3a4 and to the rotational drive unit 3b4, the screw 2 is rotationally driven clockwise as viewed from the left side of FIG. That is, in the snow removal device 1 of the present embodiment, when the operator gives an instruction by operating a switch or the like, the screw 2 is moved from the top of the roof Y toward the eaves while rotating.

  At this time, the snow accumulated on the roof Y is first lifted by the plate member 4b as shown in FIG. Subsequently, the lifted snow is moved in the axial direction of the screw 2 by the screw 2. Here, in the snow removal device 1 of the present embodiment, snow is transported to the left in the left region Ra of the screw 2, and snow is transported to the right in the right region Rb of the screw 2, for example, over the cover 3a5 and the cover 3b5. It is dropped to the side of the roof Y. Moreover, even if it does not fall to the side of the roof Y, the snow on the roof Y is scraped to the left and right by the rotation of the screw 2 and is dropped from the eaves as the screw 2 is subsequently lowered.

  According to the snow removal device 1 of the present embodiment as described above, the screw 2 that is rotationally driven includes the left blade 2b and the right blade 2c that have different winding directions. For this reason, when the screw 2 is rotated, the direction in which the snow is moved in the left blade 2b is opposite to the direction in which the snow is moved in the right blade 2c. Therefore, according to the snow removal device 1 of the present embodiment, it is possible to scrape snow in a plurality of directions.

  Further, in the snow removal device 1 of the present embodiment, the drive mechanism 3 includes a motor 3a1 that generates power for moving the screw 2, a rotation drive unit 3a4 that rotates the screw 2 by the power of the motor 3a1, and a rotation drive unit 3b4. The motor 3a1 includes a linear drive unit 3a2 and a linear drive unit 3b2 that linearly move the screw 2 from the top of the roof Y toward the eaves. For this reason, both the rotation of the screw 2 and the raising / lowering can be performed by the single motor 3a1.

  Moreover, in the snow removal apparatus 1 of this embodiment, it is arrange | positioned near the top part of the roof Y rather than the screw 2, and it moves on the roof Y by being moved by the linear motion drive part 3a2 and the linear motion drive part 3b2 with the screw 2. The extrusion part 4a which extrudes the snow toward the eave is provided. For this reason, it can suppress that the snow collapsed with the screw 2 is extruded toward the eaves by the extrusion part 4a, and snow remains on the roof Y.

  Moreover, in the snow removal apparatus 1 of this embodiment, it is attached to the bottom part of the extrusion part 4a, and the front-end | tip 4b1 is provided with the board member 4b protruded below the screw 2 toward the eaves side. For this reason, it is possible to lift the snow to be scraped with the screw 2 from the roof Y in advance, and it is possible to easily scrape the snow left and right with the screw 2.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the said embodiment. Various shapes, combinations, and the like of the constituent members shown in the above-described embodiments are examples, and various modifications can be made based on design requirements and the like without departing from the spirit of the present invention.

  For example, in the embodiment described above, the left region Ra and the right region Rb of the screw 2 may be detachable units, and the length of the screw 2 may be changed by connecting an arbitrary number of these two units. This makes it possible to easily adjust the length of the screw 2 to the size of the roof Y.

  Moreover, in the said embodiment, the structure which conveys snow to the left side in the left side area | region Ra of the screw 2, and is conveyed to the right side in the right side area | region Rb is employ | adopted. However, the present invention is not limited to this. For example, the snow transport direction in the left region Ra and the snow transport direction in the right region Rb are opposite to the above embodiment, and snow is collected in the center. It may be dropped. Thus, according to the present invention, it is possible to drop snow at an arbitrary location.

  Moreover, in the said embodiment, the structure operated by an operator operating a switch etc. was demonstrated. However, for example, a sensor or the like that measures the amount of snow may be installed and operated based on the output of this sensor. At this time, control that does not operate at night or the like may be performed, or control according to the output of a sensor that confirms the safety of the surroundings may be performed.

  In addition, in the said embodiment, although the material of the screw 2 is not specifically limited, For example, it can be set as a lightweight and cheap snow removal apparatus by using a plastic.

  DESCRIPTION OF SYMBOLS 1 ... Snow removal apparatus, 2 ... Screw, 2a ... Rotating shaft, 2b ... Left blade (blade), 2c ... Right blade (blade), 3 ... Drive mechanism, 3a ... Left unit, 3a1 ... Motor, 3a2 ... linear drive unit, 3a3 ... gear box, 3a4 ... rotation drive unit, 3a5 ... cover, 3a6 ... bearing unit, 3b ... right side unit, 3b1 ... bearing unit, 3b2 ... straight Dynamic drive unit, 3b3 ... Gear box, 3b4 ... Rotation drive unit, 3b5 ... Cover, 3b6 ... Bearing unit, 3c ... Shaft, 4 ... Guide unit, 4a ... Extrusion unit, 4b ... Plate member 4b1 ... tip, 11 ... sprocket, 12 ... sprocket, 13 ... drive belt, 14 ... shaft support, 15 ... sprocket, 16 ... sprocket, 17 ... rack gear, 18 ... pinion, DESCRIPTION OF SYMBOLS 1 ... Sprocket, 22 ... Sprocket, 23 ... Drive belt, 24 ... Shaft support, 25 ... Sprocket, 26 ... Sprocket, 27 ... Rack gear, 28 ... Pinion, Ra ... Left region, Rb ... ... Right area, Y ... Roof

Claims (4)

A snow removal device provided on a roof, comprising a screw having a blade spirally arranged around a rotation axis, and a drive mechanism for rotating the screw,
The snow removal device according to claim 1, wherein the screw has a first region in which the blade is wound clockwise and a second region in which the blade is wound counterclockwise. The drive mechanism is
A motor for generating power for moving the screw;
A rotation drive unit that rotates the screw by the power of the motor;
The snow removal device according to claim 1, further comprising: a linear motion drive unit that linearly moves the screw from the top of the roof toward the eaves by the power of the motor.   It is disposed closer to the top of the roof than the screw, and includes an extruding unit that pushes the snow on the roof toward the eaves by being moved by the linear drive unit together with the screw. Item 3. A snow removal device according to item 2.   The snow removal device according to claim 3, further comprising a plate member attached to a bottom portion of the pushing portion and having a tip projecting downward from the screw and toward the eaves side.

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