JP2008138481A - Snow removing device for roof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snow removing device for a roof, capable of removing snow of an inclined roof surface, by reciprocating a moving body in the inclined direction of its inclined roof surface, even when an inclined roof of a building is formed in an arch shape. <P>SOLUTION: This snow removing device for the roof is composed of a driving mechanism for reciprocating the moving body 30. The moving body 30 can lift along a pair of brackets 14 arranged in the inclined direction of a surface of the inclined roof 12. The driving mechanism is composed of an upper sprocket 18 respectively arranged on the upper end of the pair of brackets 14, a lower sprocket 20 respectively arranged on the lower end of the pair of brackets 14, a motor 22 rotatingly driving both these upper-lower sprockets 18 and 20, and a pair of chains 28 having both ends respectively fastened to the moving body and respectively wound between the upper-lower sprockets 18 and 20, and reciprocates the moving body 30 by rotatingly driving the motor 22. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

    The present invention relates to a snow removal device for a roof, and more particularly, to a snow removal device for a roof including a movable body that can be moved up and down along an inclination direction of an inclined roof surface of a building and a drive mechanism that reciprocates the movable body.

As this type of roof snow removal device, for example, a technique described in Patent Document 1 (filed by the inventors of the present application and unpublished at the time of the present application) is known. In this technique, a slide member that can be moved up and down along the inclination direction of the inclined roof surface of the building is provided. A snow stamping plate is attached to the ridge side end portion (the upper end portion in the inclination direction of the inclined roof surface) of the slide member via a hinge. By this hinge, the snow pressing plate can be rotated from a state where it falls so as to overlap the slide member to a state where the snow pressing plate rises so as to be substantially perpendicular to the slide member. When the snow accumulation sensor provided on the inclined roof surface detects snow accumulation, the slide member starts to descend in the inclination direction by the drive mechanism constituted by the motor and the ball screw. At this time, since the snow on the inclined roof surface becomes a resistance for the snow pressing plate, the snow pressing plate rises in a substantially vertical state with respect to the slide member. Thereby, the snow accumulation on the inclined roof surface is removed. Eventually, when the slide member reaches the lower limit of the sloped roof surface, the motor is driven to rotate in the reverse direction, so that the slide member begins to rise in the tilt direction. Similarly, when the slide member reaches the upper limit of the inclined roof surface, the motor is driven to rotate in the forward direction, so that the slide member starts to descend in the inclined direction. Thereafter, since the slide member repeatedly moves up and down, snow does not accumulate on the inclined roof surface.
Japanese Patent Application No. 2005-230808

  However, in the snow removal device for roof described above, the slide member can be moved up and down along the inclination direction by a drive mechanism composed of a motor and a ball screw. Therefore, for example, when the inclined roof has an arch shape, there has been a problem that the ball screw cannot be disposed along the inclination direction of the inclined roof surface. There has been a demand for a snow removal device for roof to solve this problem.

  The present invention is intended to solve such a problem, and the object is to move along the inclined direction of the inclined roof surface even when the inclined roof of the building is formed in an arch shape. It is intended to provide a snow removal device for a roof that can remove snow on the surface of an inclined roof by reciprocating.

The present invention is for achieving the above object, and is configured as follows. The invention according to claim 1 is a snow removal device for a roof comprising a movable body that can be moved up and down along the inclination direction of the inclined roof surface of a building, and a drive mechanism that reciprocates the movable body, wherein the movable body Can move up and down along a pair of brackets provided in the inclination direction of the inclined roof surface, and the drive mechanism includes an upper sprocket provided at an upper end of each of the pair of brackets, and the one pair. The lower sprocket provided at the lower end of each bracket, a motor for rotationally driving these upper sprockets, and a pair of chains that are fastened to the moving body at both ends and wound between the upper and lower sprockets, respectively. The moving body is reciprocated by rotationally driving the motor.
According to this configuration, even if the sloped roof of the building is formed in an arch shape, the moving body is reciprocated along the sloped direction of the sloped roof surface to remove snow on the sloped roof surface. Can do.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS. FIG. 1 is an overall perspective view of a snow removal device for roof according to the present invention. FIG. 2 is an enlarged perspective view of the movable body 30 and the snow pressing plate 50 of FIG. 3 is a longitudinal sectional view cut in a direction perpendicular to the moving direction of the moving body 30 in FIG. FIG. 4 is a side view of the moving body 30 in the roof snow removal device of FIG. 1. FIG. 5 is a diagram for explaining a descending state of the moving body 30 in the roof snow removal device of FIG. 1. FIG. 6 is a diagram for explaining a rising state of the moving body 30 in the snow removal device for roof of FIG.

  As shown in FIG. 1, a pair of brackets 14 are provided on both sides of the surface of the inclined roof 12 of the building 10 along the inclination direction of the surface of the inclined roof 12 (the arrow direction in FIG. 1). Inside these brackets 14, a hollow portion 14a is formed along the longitudinal direction. Further, guide rails 16 are provided on the opposing surfaces of the brackets 14 from the upper end to the lower end in the inclination direction of the bracket 14. A movable body 30 capable of moving up and down in the inclined direction is provided along the both guide rails 16. In addition, this inclined roof 12 is formed in the arch shape so that FIG. 1 may also show. Therefore, both brackets 14 are formed in an arc shape.

  As shown in FIGS. 2 and 3, roller mounts 34 are respectively provided at positions slightly in front of both ends of the lower surface of the moving body 30 in the longitudinal direction (the arrow direction in FIG. 2). In FIG. 2, only the roller base 34 on one side is shown. A guide rail upper roller 34 a and a guide rail lower roller 34 b that press against the upper and lower surfaces of the guide rail 16 provided on the bracket 14 are pivotally attached to the surface of the both roller mounts 34 on the bracket 14 side.

  As shown in FIG. 4, two sets of these rollers 34a and 34b are provided in the vertical direction along the inclination direction. Thereby, the moving body 30 can be moved up and down along the inclination direction of the surface of the inclined roof 12 of the building 10. Further, when the moving body 30 moves up and down along the tilt direction, there is no backlash in the direction perpendicular to the tilt direction of the moving body 30.

  Moreover, as shown in FIGS. 2-4, the bracket roller 34c which presses the surface which both brackets 14 oppose is each provided in the pivot axis | shaft of each guide rail lower roller 34b. Thereby, when the moving body 30 moves up and down along the inclination direction, no play occurs in the longitudinal direction of the moving body 30.

  Returning to FIG. 1, a motor 22 and a speed reducer 24 are provided at the upper end of the inclined roof 12 surface in the inclination direction. The speed reducer 24 is provided with a power transmission shaft 26 that transmits rotation of an output shaft (not shown) of the motor 22 in a direction parallel to the longitudinal direction of the moving body 30. Both ends of the power transmission shaft 26 are fastened to an upper sprocket 18 provided at the upper end in the inclination direction of both brackets 14. Further, lower sprockets 20 are respectively provided at the lower ends of both brackets 14 in the inclined direction so as to face both upper sprockets 18.

  Returning to FIG. 4, an inclined surface 30 a is formed at the rear end of the moving body 30 so as to be tapered. Further, at both ends of the lower surface of the moving body 30 in the longitudinal direction, a chain lower base 36 and a chain upper base 42 are provided so as to be vertically arranged along the inclination direction of the moving body 30. One end of a chain 28 is connected to the chain mount base 36 via an adjusting device. The adjusting device includes a nut 38 fixed to the chain undercarriage 36 and an adjuster bolt 40 that can be screwed onto the nut 38. The other end of the chain 28 is connected to the chain mount base 42. With this adjusting device, even when the chain 28 is stretched, the chain 28 can be kept at an appropriate tension.

  The chain 28 having both ends connected in this manner is kept in a suitable and appropriate tension penetrating the hollow portion 14a of the bracket 14 while being wound between the upper and lower sprockets 18 and 20. Further, the chain 28 is supported by an upper chain receiver 44 provided on the upper surface of the bracket 14 and a lower chain receiver 46 provided on the inner surface of the hollow portion 14a of the bracket 14 so that no deviation occurs (see FIG. 3).

  Accordingly, when the motor 22 is driven to rotate in the forward and reverse directions, the driving force is transmitted to the chain 28 via the speed reducer 24, the power transmission shaft 26 and the upper and lower sprockets 18, 20. Can be reciprocated to move up and down.

  Note that limit switches (not shown) for detecting that the moving body 30 has reached the upper and lower limits are provided at the upper and lower ends of the bracket 14 or the guide rail 16 in the inclination direction. Further, a snow cover sensor (not shown) capable of detecting snow cover on the surface of the inclined roof 12 is provided at an appropriate position on the surface of the inclined roof 12. These limit switch and snow cover sensor are electrically connected to a control device (not shown). The motor 22 is rotationally driven in the forward and reverse directions by this control device.

  Returning to FIGS. 1 and 4, a snow retaining plate 50 is provided at the lower end (eave side end) of the moving body 30 in the inclination direction via a hinge. The hinge includes an overhang portion 32 formed on the movable body 30, an overhang portion 52 formed on the snow pressing plate 50 so as to correspond to the overhang portion 32, and a hinge pin 58 inserted through both the overhang portions. It is configured. By this hinge, the snow pushing plate 50 can be rotated with respect to the moving body 30. Further, a curved portion 54 that is warped upward is formed on the free end side of the snow pressing plate 50.

  A plurality of stoppers 56 (three in FIG. 1) are provided on the surface of the moving body 30 to restrict the rotation range of the snow pushing plate 50. The stopper 56 is composed of an L-shaped angle 56a, a nut 56b that is integrally embedded so as to penetrate the angle 56a, and an adjuster bolt 56c that can be screwed into the nut 56b. As apparent from FIG. 4, the adjuster bolt 56 c is screwed into the nut 56 b so that the tip of the adjuster bolt 56 c plays a role of regulating the rotation range of the snow retaining plate 50.

  Thereby, the snow pushing plate 50 can be rotated with respect to the moving body 30 in a range of, for example, 0 to 90 ° (in FIG. 4, the range from the solid pushing plate 50 to the imaginary drawing state). it can.

  Then, the effect | action of the snow removal apparatus for roofs which consists of an above-described structure is demonstrated. When the snow sensor detects snow, the moving body 30 moves in the descending direction from the position shown in FIG. At this time, since there is snow on the surface of the inclined roof 12, the snow push plate 50 is rotated in a direction to gradually rise with respect to the moving body 30 due to the resistance caused by the snow, and eventually the snow push plate 50 moves. It will be in the state (substantially vertical state) which got up completely with respect to the body 30 (refer FIG. 5). Since the moving body 30 moves in the descending direction in the state where it is raised, the snow cover on the surface of the inclined roof 12 is dropped from the eaves side. In addition, since the snow accumulation resistance is increased by the curved portion 54 of the snow pressing plate 50, the snow pressing plate 50 can be easily raised.

  Eventually, when the moving body 30 reaches the lower limit of the guide rail 16, all the snow on the surface of the inclined roof 12 is dropped. As the snow cover is dropped in this way, the snow pushing plate 50 rotates in a direction gradually falling with respect to the moving body 30 by its own weight (rotating to the original state), and eventually, The snow pressing plate 50 is in a state of being completely tilted with respect to the moving body 30 (substantially in the same plane state). In addition, as the moving body 30 reaches the lower limit of the guide rail 16, the motor 22 is driven to rotate in the reverse direction by the detection signal from the limit switch. It continues to move in the ascending direction (see FIG. 6). At this time, as already described, since the inclined surface 30a is formed at the rear end portion of the moving body 30, even when snow is left on the surface of the inclined roof 12, or again on the surface of the inclined roof 12 Even when snow is piled up, the moving body 30 can move in the ascending direction while scraping the snow.

  Eventually, when the moving body 30 reaches the upper limit of the guide rail 16, the motor 22 is driven to rotate in the forward direction by the detection signal from the limit switch, so that the moving body 30 moves in the descending direction. Thereafter, the moving body 30 repeatedly moves up and down. In addition, when stopping the moving body 30, it is preferable to stop the moving body 30 in a state where the upper limit of the guide rail 16 is reached.

  Thus, according to the snow removal device for roofs of the present invention, even if the inclined roof 12 of the building 10 is formed in an arch shape, the moving body 30 is arranged along the inclined direction of the surface of the inclined roof 12. The snow on the surface of the inclined roof 12 can be removed by reciprocating. Further, if this roof snow removal device is applied to, for example, a general household, the motor 22 having a small capacity (about several kW) may be used, so that the running cost required for snow removal can be suppressed at a low cost.

The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In the embodiment, the configuration in which the rotational driving force of the motor 22 is transmitted to the chain 28 via the speed reducer 24, the power transmission shaft 26, and the upper sprocket 18 to reciprocate the moving body 30 along the guide rail 16 has been described. However, the present invention is not limited to this, and as described in the prior art, a configuration in which the rotational driving force of the motor is transmitted to the ball screw and the moving body 30 is reciprocated along the guide rail 16 may be used.

  Moreover, you may use the snow removal apparatus for roofs demonstrated in the Example as an apparatus which concentrates the snow falling from the inclined roof 12 in one place. In that case, a snow removal device for the roof may be disposed on the ground surface under the eaves of the inclined roof 12 so that the moving direction of the moving body 30 is parallel to the eaves of the inclined roof 12.

FIG. 1 is an overall perspective view of a snow removal device for roof according to the present invention. FIG. 2 is an enlarged perspective view of the movable body 30 and the snow pressing plate 50 of FIG. 3 is a longitudinal sectional view cut in a direction perpendicular to the moving direction of the moving body 30 in FIG. FIG. 4 is a side view of the moving body 30 in the roof snow removal device of FIG. 1. FIG. 5 is a diagram for explaining a descending state of the moving body 30 in the roof snow removal device of FIG. 1. FIG. 6 is a diagram for explaining a rising state of the moving body 30 in the snow removal device for roof of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Building 12 Inclined roof 22 Motor 24 Reduction gear 26 Power transmission shaft 28 Chain 30 Moving body 50 Snow pushing board

Claims (1)

A moving body that can be lifted and lowered along the inclination direction of the inclined roof surface of the building;
A snow removal device for a roof comprising a drive mechanism for reciprocating the moving body,
The movable body can be moved up and down along a pair of brackets provided in the inclination direction of the inclined roof surface,
The drive mechanism is
Upper sprockets respectively provided at the upper ends of the pair of brackets;
Lower sprockets respectively provided at the lower ends of the pair of brackets;
A motor that rotationally drives these upper sprockets,
It consists of a pair of chains with both ends fastened to the moving body and wound between the upper and lower sprockets,
A snow removal device for roof that reciprocates the moving body by rotating the motor.

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