JP2018178387A - Snow removal device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a snow removing device having a simple structure which can automatically remove snow according to the amount of snow.SOLUTION: A snow removing device 1 includes a snow removing plate 14 provided to be movable up and down at a flat part of a roof, a rail 12 for supporting thereof and a motor 16 for raising and lowering thereof, a driving shaft 18 driven by the motor 16, a descending wire 20 whose one end is fixed to the driving shaft 18 and other end is fixed to the snow removing plate 14, a lifting wire 24 having one end fixed to the drive shaft 18 and the other end fixed to the snow removing plate 14 and the intermediate part being wound around a pulley 28 arranged on a flat part, a control part 30 for controlling driving of the motor 16, and a snow accumulation sensor 40 for detecting the snow accumulation amount; the snowplow plate 14 has a rectangular plate shape, the plate surface is arranged in a parallel direction on the flat part, and is provided so as to be erectable with the hinge 14X at the upper end as an axis, and the warped portion 14Y with the lower end part warped up, the snow accumulation sensor 40 outputs an activation signal for activating the motor 16 to the control unit 30 when the weight of snow accumulated in a predetermined area reaches a predetermined value.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a snow removal device, and more particularly, to a snow removal device that lowers a snow removal plate provided so as to be able to move up and down in the inclination direction of a flat portion of a roof to remove snow accumulated on the flat portion.

  In regions with heavy snowfall in winter, it is necessary to remove snow on the roof. This is to prevent the damage caused by the falling weight of the snow and the falling snow from the roof. In the past, it was common for workers to remove snow directly using a scoop or the like on the roof. However, it has become a task with the danger of a fall accident.

  Therefore, a technology for snow removal by installing a snow removal device on the roof has been studied. As an example, a snow removal device described in Patent Document 1: JP-A-2007-231714 has been proposed. The snow removal device has a configuration in which a snow scraping board is installed on a rail provided on a roof, and the snow is scraped down by moving this by a moving motor and a moving wire.

JP 2007-231714 A

  In the conventional snow removal apparatus exemplified in Patent Document 1, the snow removal operation is started by a worker visually observing the amount of snow on the roof, judging the necessity of the snow removal, and turning on the start switch. Therefore, even when the amount of snow required for snow removal is reached during bedtime or away from the room, activation can not be performed. To solve this problem, for example, activation at regular intervals or activation by a timer may be considered, but even if snow removal is not necessary, energy is wasted because it is activated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a snow removal device with a simple configuration that can perform snow removal automatically according to the amount of snow accumulation.

  In one embodiment, the problems are solved by the solutions disclosed below.

  The disclosed snow removal device is a snow removal device that lowers a snow removal plate provided so as to be able to move up and down in the inclination direction of the flat portion of the roof to remove snow accumulated on the flat portion. A rail for supporting the snow removal plate so as to be able to move up and down, a motor disposed near one of the lower end or the upper end of the flat portion to raise or lower the snow removal plate, and one side closer to the lower end or the upper end of the flat portion The drive shaft is disposed so that the drive force of the motor is transmitted to rotate and one end is fixed to the drive shaft, the other end is fixed to the snow removal plate, and the drive shaft is wound by normal rotation. A lowering wire, one end of which is fixed to the drive shaft, and the other end of which is fixed to the snow removal plate, and the intermediate portion is wound around a pulley disposed on the other end closer to the lower end or upper end of the flat portion. Of the drive shaft The snow removal plate comprises a wire for lifting which is wound up by rolling, a control unit for controlling the drive of the motor, and a snow sensor for detecting the amount of snow accumulation, and the snow removal plate is a rectangle long in the direction perpendicular to the inclination direction of the flat portion. The plate surface is arranged in a direction parallel to the flat portion, and the plate surface can be erected in the upright direction with respect to the flat portion with the hinge provided at the upper end as an axis of rotation The snow cover is a sensor for detecting the weight of snow on a predetermined area, and the weight has reached a predetermined value. In this case, it is necessary to output a start signal for starting the motor to the control unit.

  According to the present invention, a snow removal device having a simple configuration is capable of automatically removing snow according to the amount of snow even when the worker does not visually determine the necessity of snow removal by visually observing the amount of snow on the roof and the like. It can be realized.

It is the schematic (side view) which shows the example of the snow removal apparatus which concerns on 1st embodiment of this invention. It is the schematic (the top view seen perpendicular | vertical to the flat part) which shows the example of the snow removal apparatus of FIG. It is the schematic (front view seen parallel to the flat part) which shows the example of the snow removal apparatus of FIG. It is the A section enlarged view of FIG. It is the schematic (side view) which shows the example of the snow accumulation sensor of the snow removal apparatus of FIG. It is the schematic (perspective view) which shows the example of the weighing scale of the snow sensor of FIG. It is the schematic (side view) which shows the example of the snow removal apparatus which concerns on 2nd embodiment of this invention.

(First embodiment)
Hereinafter, the first embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing an example of the snow removal device 1 according to the present embodiment. 2 is a plan view of the snow removal device 1 (a plan view when viewed perpendicular to the flat portion), and FIG. 3 is a front view of the snow removal device 1 (with respect to the flat portion). It is considered as the top view at the time of seeing in parallel). In all the drawings for describing the embodiments, members having the same function are denoted by the same reference numerals, and repeated description thereof may be omitted. In addition, "flat part" is used as a term (architectural term) pointing to the upper surface (surface) of a roof.

  As shown in FIGS. 1 to 3, the snow removal device 1 is supported by a plurality of rails 12 disposed in a direction parallel to the inclination direction of the flat portion R and the rails 12 in the flat portion R of the roof A movable snow removal plate 14 is provided. According to this, the snow removal plate 14 can be raised and lowered along the inclination direction of the flat portion R of the roof. As an example, the rail 12 is configured using L-shaped steel, T-shaped steel or the like. Further, the snow removal plate 14 is configured to be supported by the rail 12 so as to be movable (liftable) by locking the locking portion 14 Z having a groove to the rail 12. The standby position before the start of the snow removing operation of the snow removal plate 14 is a position closer to the upper end Rb of the flat portion R (the position of A in FIG. 1). Further, in order to facilitate understanding, the state in which the snow removal plate 14 is lowered to the lower end Ra of the flat portion R (the position B in FIG. 1) is also described in FIGS. 1 and 2. Moreover, FIG. 3 is illustrated in the state which raised board surface 14A, 14B of the snow removal plate 14. In FIG.

  Here, the mechanism for raising and lowering the snow removal plate 14 will be described. First, a motor 16 for generating a driving force for moving the snow removal plate 14 up and down, and a driving shaft 18 for transmitting the driving force of the motor 16 to rotate are provided. Furthermore, the control part 30 which controls the drive of the motor 16 is provided. As an example, the motor 16 and the drive shaft 18 are disposed closer to the lower end Ra or the upper end Rb of the flat portion R (in the present embodiment, closer to the lower end Ra). The control unit 30 may be disposed as appropriate below the eaves or the like where rain water does not fall.

  Further, one end 20a is fixed to the drive shaft 18 (here, fixed to the winding roller 22 fixed to the drive shaft 18), and the other end 20b is a snow removal plate 14 (here, the lower end portion 14a in the inclination direction of the flat portion R). And a lowering wire 20 which is fixed to the take-up roller 22 by normal rotation (indicating rotation in a predetermined direction) of the drive shaft 18.

  Furthermore, one end 24a is fixed to the drive shaft 18 (here, fixed to the winding roller 26 fixed to the drive shaft 18), and the other end 24b is the snow removal plate 14 (here, the upper end 14b in the inclination direction of the flat portion R). ), And is provided with a lifting wire 24 wound on the winding roller 26 by reverse rotation of the drive shaft 18 (referring to rotation in a direction opposite to the predetermined direction). The lifting wire 24 is wound around a pulley 28 rotatably disposed at the other end of the flat portion R closer to the lower end Ra or closer to the upper end Rb (closer to the upper end Rb in this embodiment). This produces an action of reversing the moving direction of the lifting wire 24 by 180 [.degree.].

  According to this configuration, by driving the motor 16 to cause the drive shaft 18 to rotate normally, the lowering wire 20 is taken up by the winding roller 22, and the snow removal plate 14 is pulled by the lowering wire 20. An operation of lowering from the standby position near the upper end Rb of the part R toward the position near the lower end Ra occurs. Thereafter, by driving the motor 16 to reverse the drive shaft 18, the lifting wire 24 is taken up by the winding roller 26, and the snow removal plate 14 is pulled by the lifting wire 24, and the lower end Ra of the flat portion R is From the near position, an action of rising toward the position near the upper end Rb occurs.

  In the present embodiment, a reversing limit switch 32 that outputs a signal to reverse the driving direction (rotational direction) of the motor 16 at a position near the lower end Ra of the flat portion R can contact the snow removal plate 14 moving up and down. Are located in According to this, when the snow removal plate 14 descends and contacts the reversing limit switch 32, a signal is output to the control unit 30 to reverse the driving direction (rotational direction) of the motor 16 from normal rotation to reverse rotation. . Therefore, the operation of the snow removal plate 14 can be reversed from downward to upward.

  Further, a stop limit switch 34 for outputting a signal for stopping the drive (rotation) of the motor 16 is disposed at a position near the upper end Rb of the flat portion R so as to be able to contact the snow removal plate 14 moving up and down. . According to this, when the snow removal plate 14 ascends and abuts on the stop limit switch 34, a signal for stopping the drive (rotation) of the motor 16 is output to the control unit 30. Therefore, it is possible to stop the lifting operation of the snow removal plate 14 and make the standby state at the standby position.

  The arrangement position of each mechanism is not limited to the above configuration, and the motor 16 and the drive shaft 18 are disposed closer to the upper end Rb of the flat portion R, and the pulley 28 is disposed closer to the lower end Ra. It is good also as composition (not shown).

  Next, the specific configuration of the snow removal plate 14 will be described. Here, an enlarged view of a portion A in FIG. 1 is shown in FIG. The snow removal plate 14 according to the present embodiment is formed in a rectangular plate shape that is long in a direction orthogonal to the inclination direction of the flat portion R in a plan view. In addition, the plate surfaces 14A and 14B are disposed on the flat portion R with the hinge 14X provided at the upper end portion 14b as the axis of rotation and the plate surfaces 14A and 14B are disposed parallel to (including parallel to) the flat portion R. It is provided to be able to stand in the upright (including orthogonal) direction. Furthermore, the lower end portion 14a has a warped portion 14Y having a shape that is warped upward (that is, in a direction away from the flat portion R).

  According to this, in the standby state before the snow removal operation of the snow removal plate 14 starts, the plate surfaces 14A and 14B are parallel to the flat portion R by their own weight (the broken line in FIG. 4). On the other hand, after the snow removal operation of the snow removal plate 14 is started, the warped portion 14Y receives the resistance of the snow as the snow removal plate 14 descends, and the plate 14A, 14B rotates around the hinge 14X. To the flat portion R (solid line in FIG. 4). Therefore, by lowering the snow removal plate 14 on which the plate surfaces 14A and 14B (the side for scratching the snow is raised) is lowered, it is possible to scrape the snow of the flat portion R toward the eaves and remove the snow.

  On the other hand, when the snow removal plate 14 descends to a predetermined position and abuts on the reversing limit switch 32 and turns upward, the snow resistance which has been received until then disappears, so the plate surfaces 14A and 14B fall by their own weight and the flat portion R And return to parallel status. Therefore, the snow removal plate 14 (here, the plate surface 14A) is passed above the eaves and under the eaves without stopping the snow falling from the large ridge (the top of the roof) due to the snow removal from the flat part R. It is possible to make it head to.

  Here, as described above, in the conventional snow removal device, the configuration in which the operator starts the device is general. On the other hand, in the present embodiment, a snow accumulation sensor 40 for detecting the amount of snow accumulation is provided, and the snow removal operation is automated by outputting a start signal for activating the motor 16 when a predetermined snow accumulation condition is reached. Is possible.

  For example, as a snowfall sensor for detecting the amount of snowfall, it can not be conceived to use a known sensor that simply measures the snowfall height (depth). However, snow has characteristics of varying weight depending on the amount of water per unit volume. That is, even if the snow with a large amount of water has a very low snow height (depth), the load on the roof may be extremely high. Therefore, the sensor that measures the snow height (depth) can not appropriately grasp the timing to start the snow removal operation.

  Therefore, a sensor that detects the weight of snow on a predetermined area is used for the snow sensor 40 in the present embodiment. According to this, it is possible to output to the control unit 30 a start signal for starting the motor 16 when the weight of the snow cover in the predetermined area becomes a predetermined value. Therefore, it becomes possible to appropriately start the snow removal operation when the load on the roof due to the snowfall reaches a predetermined value. In addition, the snow sensor 40 is arrange | positioned by the flat part R of a roof as an example. However, the present invention is not limited to this configuration, and may be appropriately disposed at a place where the amount of snowfall can be detected.

  Here, a specific configuration of the snow cover sensor 40 will be described. As shown in FIG. 5, the snowfall sensor 40 includes an arm 46 supported at its middle portion by a support column 44 erected in the vertical direction from the base portion 42 and rockable like a seesaw. In the standby state before the start of the snow removal operation, one end 46 a of the arm 46 is set to be in the horizontal direction.

  Further, at one end 46a of the arm 46, a measuring rod 48 for receiving and accommodating snowfall is provided. The measuring rod 48 is configured to have a bottom surface 48 a of a predetermined area. On the other hand, a balance weight 50 for balancing the arm 46 is provided at the other end 46 b of the arm 46. Furthermore, when one end 46a of the arm 46 is lowered and the other end 46b is raised, the arm 46 is disposed at a position to be in contact with the other end 46b (or one end 46a, an intermediate portion or the like). A limit switch 52 is provided to output a start signal for starting the motor 16 to the control unit 30.

  According to this configuration, one end 46a of the arm 46 is lowered when the weight of snow accumulated on the bottom surface 48a of the predetermined area in the weighing rod 48 exceeds the state where adjustment is made by the balance weight 50. When the other end 46 b moves upward, the arm 46 abuts on the limit switch 52, and a start signal for starting the motor 16 is output to the control unit 30. Therefore, when the weight of snowfall reaches a predetermined value, it is possible to automatically start the motor 16 and start the snow removal operation.

  Further, on the other end 46 b side of the arm 46, a slide mechanism 54 is provided which fixes the balance weight 50 slidably. According to this, since the balance weight 50 can be appropriately moved toward the one end 46 a side or the other end 46 b side to perform balance adjustment, a weighing rod that causes the arm 46 and the limit switch 52 to abut It becomes possible to set the amount of snow (weight) in 48 suitably. As a modification, instead of providing the slide mechanism 54, a plurality of balance weights 50 may be prepared and replaced as needed (not shown). Alternatively, instead of providing the balance weight 50, the base 42 and the arm 46 may be connected by a biasing member (for example, a coil spring) (not shown).

  Furthermore, as shown in FIG. 6, the measuring rod 48 is formed in a box shape in which the side wall 48 b is provided at a position other than the end side (tip end side) of the one end 46 a of the arm 46. According to this, when snow accumulation occurs in the weighing scale 48 and the one end 46 a of the arm 46 is lowered, the snow in the weighing scale 48 can be discharged to the outside. Thus, the arm 46 can be returned to the standby state.

  As described above, it is possible to perform appropriate snow amount detection by using the snow sensor 40 having a very simple configuration. Therefore, it is possible to realize automatic snow removal that starts the snow removal operation at an appropriate timing.

  The start of the snow removal operation is not limited to automatic. For example, by providing a manual control switch for outputting a start signal for starting the motor to the control unit, the operator can start the snow removal operation at a desired timing. The manual control switch may be provided in the control unit 30 or the like, or may be provided in the remote controller (all not shown).

  Alternatively, as in the conventional device, the control unit 30 may be provided with functions of periodic interval activation and timer activation.

  About each mechanism demonstrated above, a stainless steel alloy is suitably used from a viewpoint of rust prevention as an example of a constituent material. However, the present invention is not limited to this, and may be configured using other metal materials, resin materials, and the like.

Second Embodiment
Subsequently, a snow removal device 1 according to a second embodiment of the present invention will be described. The snow removal device 1 according to the present embodiment is the same in basic configuration as the first embodiment described above, but in particular, has a difference in the structure including the snow removal net 60 fixed to the snow removal plate 14. Hereinafter, the present embodiment will be described focusing on the difference.

  In the snow removal device 1 according to the present embodiment, as shown in FIG. 7, one end 60 a is fixed to the lower end portion 14 a of the snow removal plate 14 and the other end 60 b is drooping downward from the lower end Ra of the flat portion R under the eaves. Snow removal net 60 is provided. The snow removal net 60 is disposed so that the middle portion can slide on the flat portion R (including the rail 12). The material of the net is not particularly limited, but a net made of a resin material can be suitably used.

  According to this configuration, by lowering the snow removal plate 14 of the fixing source, the snow removal net 60 is also lowered along with the snow removal plate 14 while sliding down on the flat portion R by the weight of the snow accumulation. Therefore, it is possible to easily remove snow by using the snow removal net 60 in combination even if it is difficult to scrape the snow only with the snow removal plate 14, especially when the amount of snow accumulation is extremely large.

  In the present embodiment, a wrap prevention cover 62 that covers the drive shaft 18 and supports the snow removal net 60 is provided. As an example, the winding prevention cover 62 has a plate shape that is rectangular in plan view, and is curved at its end (in particular, the lower end). According to this, particularly when the drive shaft 18 is disposed near the lower end Ra of the flat portion R, there is a risk that the snow removal net 60 may be wound when the drive shaft 18 rotates. In addition, the effect of sliding the snow removal net 60 smoothly can be obtained.

  As described above, according to the snow removal device 1 of the disclosure, it is possible to automatically remove snow according to the amount of snow even when the operator does not visually judge the amount of snow on the roof and judges the necessity of the snow removal. An apparatus with a simple configuration can be realized.

  In particular, the snow removal operation can be appropriately started when the load on the roof reaches a predetermined value with respect to snow having a different amount of water per unit volume each time snowfall occurs, which is extremely effective. It is a thing.

  For example, even when sleeping or absent, it is possible to automatically start up when the amount of snow necessary for snow removal is reached. Therefore, there is no useless start-up as compared with the regular interval start-up or the timer start-up, and energy saving can be achieved.

  In addition, since a very light and simple structure is realized, it can be applied not only to ordinary houses but also to vinyl houses and the like, and can be installed on a solar power generation device or the like.

  The present invention is not limited to the embodiments described above, and various changes can be made without departing from the present invention.

DESCRIPTION OF SYMBOLS 1 Snow removing device 12 Rail 14 Snow removing plate 14 A, 14 B Plate surface 14 X Hinge 14 Y Warpage 14 Z Locking portion 16 Motor 18 Drive shaft 20 Wire for lowering 22 Winding roller 24 Lifting wire 26 Winding roller 28 Pulley 30 Control unit 32 Reverse For limit switch 34 Stop limit switch 40 Snow sensor 42 Base 44 Support 46 Arm 48 Weighing rod 50 Balance weight 52 Limit switch 54 Slide mechanism 60 Snow removal net 62 Winding prevention cover 52 Limit switch R Roof flat part

Claims (6)

It is a snow removal apparatus for removing snow from a snow removal plate provided so as to be able to ascend and descend in the direction of inclination of a flat portion of a roof to remove snow accumulated on the flat portion,
A rail disposed on the flat portion for supporting the snow removal plate so as to be movable up and down;
A motor disposed at one of the lower end and the upper end of the flat portion for raising and lowering the snow removal plate;
A drive shaft which is disposed at one of the lower end and the upper end of the flat portion and transmits the driving force of the motor to rotate;
A lowering wire which has one end fixed to the drive shaft and the other end fixed to the snow removal plate and wound by normal rotation of the drive shaft;
One end is fixed to the drive shaft, the other end is fixed to the snow removal plate, and the intermediate portion is wound around a pulley disposed on the other end of the flat portion closer to the lower end or upper end. A lifting wire which is wound by reverse rotation of the
A control unit that controls driving of the motor;
And a snowfall sensor for detecting the amount of snowfall;
The snow removal plate is formed in a rectangular plate shape that is long in a direction orthogonal to the inclination direction of the flat portion, and the plate surface is disposed in parallel to the flat portion and rotates a hinge provided at an upper end portion As an axis of the plate, a plate surface is provided so as to be able to stand upright in the upright direction with respect to the flat portion, and a lower end portion has a warped portion having a shape warped upward,
The snowfall sensor is a sensor that detects the weight of snowfall in a predetermined area, and outputs a start signal for starting the motor to the control unit when the weight reaches a predetermined value. The snow sensor includes an arm swingably supported in a seesaw shape, with an intermediate portion supported by a column erected in the vertical direction from a base portion;
A measuring rod disposed at one end of the arm and having a bottom surface of the predetermined area;
A balance weight disposed at the other end of the arm and slidably provided on the arm;
A limit switch which is disposed at a position abutted against the arm when one end of the arm descends and the other end ascends due to snow accumulation in the weighing tub, and outputs the activation signal. The snow removal device according to claim 1. The snow removal device according to claim 2, wherein the measuring weir is formed in a box-like shape in which a side wall is provided at a position other than the end side at one end of the arm. The snow removal net according to any one of claims 1 to 3, further comprising a net-like snow removal net having one end fixed to the lower end of the snow removal plate and the other end hanging down from the lower end of the flat portion to under an eave. Snow removal equipment. The snow removal device according to claim 4, further comprising an anti-rolling cover that covers the drive shaft and supports the snow removal net. The snow removal device according to any one of claims 1 to 5, further comprising a manual control switch that outputs a start signal for starting the motor to the control unit.

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