WO2006070464A1

WO2006070464A1 - Icicle removal device

Info

Publication number: WO2006070464A1
Application number: PCT/JP2004/019624
Authority: WO
Inventors: Misao Yamaguchi
Original assignee: Top House Corporation
Priority date: 2004-12-28
Filing date: 2004-12-28
Publication date: 2006-07-06

Abstract

[PROBLEMS] An icicle removal device for breaking by pushing and removing icicles hanging from eaves by colliding with the icicles from a side. The process requires relatively small force and therefore the device is less likely to be deformed and damaged. The device has excellent durability and can accomplish removal in a short time. [MEANS FOR SOLVING PROBLEMS] An icicle removal device (10) is used to remove icicles that naturally grow and hang from icicle generation portions of various kinds of buildings, such as roof eaves of the buildings. The device has at least one elongate bar-like body (20) and advance/retreat mechanisms (30). The bar-like body (20) is placed along the direction in which a large number of icicles are continuously present, close to the icicles. The advance/retreat mechanisms (30) are arranged at at least two positions separated in the longitudinal direction of the bar-like body (20) and advance and retreat the bar-like body (20) in the direction orthogonal to the longitudinal direction of the bar-like body (20). The advance/retreat mechanisms (30) are adapted to advance and project forward the bar-like body (20) so that the bar-like body (20) breaks by pushing the icicles from behind to remove them.

Description

Specification

Icicle removal device

Technical field

[0001] The invention of the present application relates to an icicle removing apparatus used for removing icicles that grow naturally and hang down at icicle generation sites of various structures such as eaves of roofs of buildings, especially in winter.

Background art

[0002] In winter, the icicles that grow naturally and hang down on the eaves of the roof of a building such as a house are slender !, and have a tapered blade shape. It is dangerous because people can be bruised and injured. In addition, the danger is not limited to the human body, but directly hits and destroys kerosene tanks and gas cylinders installed under the eaves, damages automobiles parked underneath, and falls on the land and buildings of neighboring houses. Cause damage and cause trouble.

[0003] In recent years, icicles generated at the entrance, exit and inside of tunnels have been pointed out to have adverse effects on the safe driving of automobiles and public transport organizations. In fact, several accident cases have been reported. Yes. In addition, there have been reports of accidents where icicles fell on the wiring equipment in the factory, melted, caused an electrical leakage accident, and the factory was shut down. Thus, the harm caused by icicles is not limited to the daily living environment.

[0004] Therefore, conventionally, such icicles are smashed and removed by manual work or automatic machine work, and are used in daily life such as personal safety and maintenance of various equipment. The dangers of this will be resolved.

[0005] As an apparatus that beats and removes icicles by automatic mechanical work, there is one described in JP-A-2002-371727. In this case, a striking member is projected outwardly on a traveling body that runs on a rail provided along the direction of the eaves tip line under the eaves, and the striking member is caused by traveling of the traveling body. Eaves force By hitting the icicles hanging down in sequence, the icicles are broken and removed.

[0006] This beating member has an opening surface (an inner region defined by a ring-shaped closed loop). The opening side surface) is formed in a ring shape so as to follow the traveling direction of the traveling body, and this force is provided on the traveling body so as to be swingable about the traveling direction of the traveling body. It is held at the beating position so as to be swingable.

[0007] Therefore, this beating member has its ring-shaped closed loop force leveled at its opening surface, and sequentially collided from the lateral direction in a series of icicles depending on the eaves force as the traveling body travels. Since these icicles are smashed and removed, a relatively large force is required, and when the icicles collide with the icicles with a strong impact force, the icicles are easily deformed, and the removal work takes a relatively long time. There is a problem that it takes.

Patent Document 1: JP 2002-371727 A

Disclosure of the invention

Problems to be solved by the invention

[0008] The invention of the present application solves the above-mentioned problems of the conventional icicle removal device, and generates icicle generation points of various structures such as eaves of roofs of buildings. A icicle removal device that requires only a relatively small force to fold and remove these icicles by colliding with each other, is highly resistant to deformation and damage, and can be removed in a short time. It is an issue to provide.

Means for solving the problem

[0009] The above-described problems can be solved by the following invention described in each claim of the present application.

In other words, the icicle removal device is an icicle removal device that is used to remove icicles that naturally grow and hang down at the icicle generation sites of various structures such as the eaves of the roof of a building. At least one long rod-shaped body arranged in the vicinity of these icicles along a large number of directions, and at least two places separated in the length direction of the rod-shaped body, the rod-shaped body And a reciprocating mechanism for advancing and retreating in a direction perpendicular to the length direction of the rod, and the advancing / retreating mechanism advances the rod-shaped body and projects forward so that the rod-shaped body causes these icicles to move forward. The icicle removing device is characterized in that it can be pushed and removed from the direction!

[0010] Since the icicle removing device is configured as described above, a direction in which a large number of icicles are arranged in series. At least one long rod-like body force placed in close proximity to these icicles, moving forward in a direction perpendicular to its length direction and projecting forward, and then in the icicle chain The icicles can be removed simultaneously by colliding at the same time, and the icicles can be removed in a short time with a relatively small force.

[0011] Since the long rod-shaped body does not have a closed loop shape such as a ring shape,

Even if a relatively large icicle collides with a strong impact force from the rear direction, it is easy to make the structure resistant to deformation and damage, and an icicle removing device with excellent durability can be obtained.

[0012] In a preferred embodiment, the four links of the advancing / retreating mechanism force are connected to each other at four joints so as to be freely rotatable, resulting in a planar four-bar linkage mechanism force combined in a rhombus shape. Of the four knot points of the knot link mechanism, the two knot points facing each other in the length direction of the rod-shaped body are screwed into the screw shafts, and the screw shafts rotate to approach each other. At the same time, the remaining two nodal points facing each other are separated from and approaching each other, one of the remaining two nodal points facing each other is a fixed part, and the other is a moving part. Then, it is bound to the rod-shaped body.

[0013] With this configuration, the advance / retreat mechanism force can be operated only by the rotation of the screw shaft, and the force can be obtained by making the screw shaft common to all advance / retreat mechanisms. Since the drive sources can be combined into one, the structure of the advance / retreat mechanism can be made compact and simple.

[0014] Further, in another preferred embodiment, the icicle removing device is disposed at a base end portion on the opposite side to the side where the rod-shaped body is located, and spans a predetermined angle range centering on an axis parallel to the rod-shaped body. It can be swung.

[0015] Thus, even if the snow that has accumulated on the roof falls on the icicle removing device during the icicle removing operation, the icicle removing device swings downward and drops the falling snow. The icicle removal work can be continued while escaping and restoring the weight of the icicle, and the icicle removal can be performed smoothly and reliably.

[0016] Furthermore, in another preferred embodiment, the icicle removing device further includes control means for operating the advance / retreat mechanism at regular intervals. [0017] Thereby, since the icicle removing device is operated every fixed time, before the icicle grows so large that it becomes difficult to remove the icicle, the icicle can be pushed and removed. Therefore, icicles can be removed more smoothly and reliably.

The invention's effect

[0018] As described above, according to the icicle removing device of the invention of the present application, at least one long rod-shaped body disposed in the vicinity of these icicles along the direction in which many icicles are connected, By moving forward in a direction perpendicular to the vertical direction and projecting forward, it is possible to collide with icicles from the rear direction at the same time, and to push these icicles away at once, with relatively little force, Icicles can be removed in a short time.

[0019] Since this long rod-shaped body that forms the icicle folding member does not form a closed loop shape such as a ring shape, even if it collides with a relatively large icicle with a strong impact force from the rear direction, Therefore, it is possible to provide an icicle removing device that can be easily made into a structure that is not easily deformed or damaged and that has excellent durability.

[0020] Further, when the advance / retreat mechanism of the rod-like body also has a plane four-bar linkage mechanism force, the advance / retreat mechanism can be operated only by the rotation of the screw shaft, By standardizing all the advance / retreat mechanisms, the drive source can be integrated into one, so that the structure of the advance / retreat mechanism can be made compact and simple.

[0021] Further, the icicle removing device is configured to be swingable over a predetermined angle range around an axis parallel to the rod-like body at a base end opposite to the side where the rod-like body is located. Even if the snow on the roof falls on the icicle removal device during the icicle removal work, the icicle removal device swings downward and drops the falling snow, and the weight of the snow is reduced. Icicle removal work can be continued while escaping and restoring, and icicle removal can be performed smoothly and reliably.

[0022] Further, when the icicle removing device is further provided with a control means for activating the advance / retreat mechanism at regular intervals, the icicle removing device is activated at regular intervals. Therefore, before the icicle grows so large that it becomes difficult to remove the icicle, the icicle can be pushed and removed, and the icicle can be removed more smoothly and reliably. Brief Description of Drawings

FIG. 1 is a schematic side view showing a state in which the icicle removing device of the present embodiment is installed under the eaves of a building, and a diagram for explaining the operation principle.

FIG. 2 is a plan view of the icicle removing device.

FIG. 3 is a partially enlarged view of FIG.

FIG. 4 is a detailed side view showing a state where the icicle removal device is installed under the eaves of the building.

FIG. 5 is a detailed side view showing a state where the icicle removing device is operated and protrudes forward in FIG.

FIG. 6 is a view showing a modification of the attaching means of the icicle removing device.

Explanation of symbols

[0024] 1 ··· building, 2 ··· roof, 3 · · · eaves, 4 · · · icicle, 5 · · · windbreak plate, 5a · · · opening, 6 · · · side wall, 7 · · ·, 10 · · · · Icicle removal device, 20 · · · rod (beating member), 30 · · advance and retreat mechanism, 31-1-31-4 ... node, 32-1 one 32-4 ... node, 33 · U-shaped mounting member, 34… Support rod, 35 ··· Spring, 36 ··· Bracket, 37 ··· Attachment aid, 38 ··· Grain cover, 40 ··· Screw shaft, 40—1, 40 —2 ···················································· Ball joint, 41— 2 ··· Coupling part, 41— 3 · “Spline, 42 ··· Drive motor, 43 ··· Base member, 43a… recessed cavity, 44… bolt, Α ···· Under space, ΙΛ—L4- "link.

BEST MODE FOR CARRYING OUT THE INVENTION

[0025] The icicle removal device used to remove the icicles that grow naturally and hang down on the eaves of the roof of a building such as a residence is arranged in the vicinity of these icicles along a direction in which many icicles are connected. At least one long rod-shaped body provided and at least two places separated in the longitudinal direction of the rod-shaped body, and the rod-shaped body is moved forward and backward in a direction perpendicular to the longitudinal direction. And an advancing / retreating mechanism.

[0026] This advancing / retracting mechanism is a plane four-bar link mechanism force combined in a rhombus shape by being connected to each other at four nodal points with four link forces. Of the point portions, two nodal point portions facing each other in the length direction of the rod-shaped body are respectively screwed into the screw shaft, and when the screw shaft is rotated, they move toward and away from each other, and the remaining portions facing each other So that the two knot points are separated from each other. The remaining 2 opposite One of the two knot points can be fixed to the other, and the other can be connected to the rod-like body as a moving portion. The rod-like body can move forward and protrude forward, so that the icicle can be pushed and removed. Like that. The advance / retreat mechanism is preferably operated at regular intervals by the control means.

Example

Next, an embodiment of the present invention will be described.

FIG. 1 is a schematic side view showing a state in which the icicle removing device of this embodiment is installed under the eaves of a building, and is a diagram for explaining the operation principle together, FIG. 2 is a plan view of the icicle removing device, Fig. 3 is a partially enlarged view of Fig. 2, Fig. 4 is a detailed side view showing the same icicle removal device installed under the eaves of the building, and Fig. 5 is a front view of the icicle removal device operated in Fig. 4. It is a detailed side view which shows the state which protruded in.

As shown in FIG. 1, the icicle removing device 10 of this embodiment grows and hangs down naturally on the eaves 3 of the roof 2 of the building 1 such as a residence under the eaves where the space A is provided. Used to remove icicle 4. The outline of the structure is provided under the eaves in at least two long bar-like bodies 20 arranged along the eaves edge 3 and at least two places separated in the length direction of the bar-like bodies 20. The rod-like body 20 is provided with an advancing / retreating mechanism 30 for advancing / retreating the rod-like body 20 in a direction orthogonal to the length direction (horizontal direction orthogonal to the eaves 3). The icicle 4 grows in a row along the eaves 3 along the eaves 3, and the rod-shaped body 20 is arranged in close proximity to the icicles 4.

[0029] In this embodiment, the rod-shaped body 20 is disposed along the eaves 3 in the front region of the windbreak plate 5 belonging to the eaves space A, but depending on the structure of the building, the side wall 6 It may be arranged along the eaves 3 in the front area of the. In the present embodiment, the advancing / retreating mechanism 30 is provided at two locations separated in the length direction of the single rod-shaped body 20 (see FIG. 2). Depending on the length, the installation location may be further increased.

The rod-shaped body 20 forms a folding member that folds the icicle 4. Various cross-sectional shapes are conceivable. In this embodiment, as shown in FIGS. 4 and 5, a plate bar shape that is slightly flat in the horizontal direction is used. If such a cross-sectional shape is provided and a sufficient cross-sectional area is given, a relatively large icicle is formed in the rear direction (the lateral direction in the rear direction). Even if it collides with an impact force from the direction), it can be a folded member that is not easily deformed or damaged and has rigidity.

[0031] Such a rod-like body 20 is moved forward by a forward / backward mechanism 30 which will be described in detail later and protrudes forward in the horizontal direction, whereby the icicle 4 is pushed and removed from the rear direction. can do. As described above, the icicles 4 are generated in a large number along the eaves edge 3 along the eaves edge 3, and this forward movement of the rod-shaped body 20 is removed by pushing the chain of these many icicles 4 at once. To do. The forward and backward movements of the rod-shaped body 20 are not necessarily limited to the horizontal direction, but may be an inclination direction appropriately inclined from the horizontal direction as necessary.

[0032] Next, the structure of the advance / retreat mechanism 30 will be described in detail.

As shown in FIGS. 2 and 3, the advancing / retracting mechanism 30 is rotatably connected to each other at the four links L1, L4, and the four nodes 31-1 to 31-4, and is combined in a rhombus shape. It also has a flat four-bar linkage mechanism. Of the four nodule portions 32-1 to 32-4, each having the four nodule points 31-1 to 31-4, the second and fourth 2 facing the longitudinal direction of the rod 20 The two nodal point portions 32-2 and 32-4 are screwed into the male screw portions 40-1 and 40-2 of the screw shaft 40, respectively, and move toward and away from each other as the screw shaft 40 rotates. . At the same time, the remaining first and third nodal point portions 32-1, 32-3 facing each other are separated from each other.

[0033] Of the remaining two first and third nodal point portions 32-1 and 32-3 facing each other, one of the first nodal point portions 32-1 is a fixed portion, and the other first nodal point portion 32-1 is the other one. The third nodal point portion 32-3 is a moving portion, and the third nodal point portion 32-3, which is the moving portion, is bound to the rod-shaped body 20.

[0034] The first knot point portion 32-1, which is a fixed portion, is fixed to the substantially central portion of the support bar 34 rotatably supported by the windbreak plate 5 via a pair of U-shaped mounting members 33. It can be rotated integrally with the support bar 34. As described above, the first nodal point portion 32-1 can be rotated integrally with the support rod 34, so that the advancing / retreating mechanism including the first nodal point portion 32-1 as one nodal point portion is provided. 30 and the rod-like body 20 fixed to the third nodal point portion 32-3 of the advance / retreat mechanism 30 can be swung integrally with the support rod 34. The swing range is a range that forms a predetermined angle α (see Fig. 5) with the horizontal plane, and this range is where the icicle removal device 10 falls from the roof 2. It is set as a range where icicle removal work can be continued while dropping the falling snow, releasing the weight of the snow, and restoring it. Specifically, this is realized by appropriate setting of the spring 35 interposed between the U-shaped mounting member 33 and the support rod 34.

That is, in a normal state where the spring 35 supports only the weight (cantilever load) of the icicle removing device 10, the spring 35 is set so as to hold the icicle removing device 10 substantially horizontally. In an abnormal state that supports the weight of falling snow in addition to the weight of the icicle removal device 10, the maximum deformation amount is such that the icicle removal device 10 is tilted downward from the horizontal to an angle. Should be set to. The maximum deformation amount can also be regulated using a stopper.

[0036] The second and fourth nodal point portions 32-2 and 32-4 have a rectangular parallelepiped shape in which screw holes to be respectively screwed into the male screw portions 40-1 and 40-2 of the screw shaft 40 are formed. Consists of block bodies. The male screw portions 40-1 and 40-2 are arranged so that the male screws formed therein are in a reverse screw relationship with each other, and when the screw shaft 40 rotates, these male screw portions 40-1, 40-2 The two second and fourth knot points 32-2 and 32-4, which are screwed together, move in a direction away from each other. Due to this, the first and third nodal point parts 32-1 (fixed part) and 32-3 (moving part) of the advancing / retreating mechanism 30 that also has a plane four-bar linkage mechanism force are separated from each other. Move in the same direction, and move the rod 20 forward and backward in the same direction.

The right end of the screw shaft 40 in FIGS. 2 and 3 is connected to the output shaft of the drive source motor 42 via the universal joint 41. The universal joint 41 includes ball joints 41 1 at both ends thereof, and the intermediate portion has a coupling portion 41-2 for receiving a pair of splines 41-3 each having one end fixed to each ball joint 411. It has become. Therefore, now, the screw shaft 40 rotates, and the second and fourth nodal point portions 32-2 and 32-4 approach and separate from each other, and accordingly, the first, third 2 Even if the two knot points 32-1, 32-3 move away from each other and the screw shaft 40 itself moves forward and backward, the pair of splines 41-3 move away and approach each other, and the universal joint 41 extends and shortens. At the same time, since the ball joint 41-1 transmits power freely, the rotational output of the motor 42 can always be transmitted to the screw shaft 40. In reality, the pair of splines 41-3 is only allowed to reciprocate within the coupling part 41-2, with only the spline 41-3 having one end fixed to the ball joint 41-1 on the screw shaft 40 side. ing.

[0038] The motor 42 is attached and fixed to a bracket 36 fixed to the right end of the support bar 34 in FIGS. Therefore, the motor 42 can also rotate integrally with the support rod 34 when it rotates. In this way, the icicle removing device 10 including the advance / retreat mechanism 30, the rod-shaped body 20, and the drive source motor 42 is configured to swing about the axis of the support rod 34 integrally with the support rod 34. It becomes possible.

[0039] The screw shaft 40 is shared by the two advancing / retracting mechanisms 30 provided at two locations separated in the length direction of the single rod-shaped body 20. Then, by operating the single drive source motor 42, both the advancing and retracting mechanisms 30 can be operated in exactly the same manner. By adopting the universal joint 41, power is transmitted smoothly, and the advance / retreat mechanism 30 including the power transmission mechanism can be simply accommodated in the narrow eaves space A.

[0040] The drive source motor 42 can be configured to be controlled by a control means (not shown) incorporating a timer. This control means operates the motor 42 intermittently at regular intervals, and causes the advance / retreat mechanism 30 to advance and retract at regular intervals. Accordingly, the icicle removing device 10 can remove the icicle 4 by folding it before the icicle 4 grows so large that it becomes difficult to remove the icicle, thereby facilitating the icicle removing operation.

[0041] In the embodiment illustrated in FIGS. 4 and 5, the blast plate 5 is attached to the building 1 in a direction of inclination that is significantly deviated from the normal force. In such a case, a mounting aid 37 having a triangular cross section is further placed under the U-shaped mounting member 33 shown in FIGS. 2 and 3, and the U-shaped mounting member 33 is attached to the mounting support 33. Install and fix to the windbreak plate 5 through the tool 37.

In the embodiment shown in FIGS. 4 and 5, a cover 38 serving as a rain gutter is attached to the eaves 3. As in this embodiment, when the eaves 3 has a short projecting length, if there is no cover 3 8, snow is accumulated on the upper part of the rod-like body 20 and the advancing / retreating mechanism 30 of the icicle removing device 10 in an inoperative state. Forces that could hinder its operation The provision of such knuckles-38 eliminates this possibility. The icicle 4 grows from the lower end of the cover 38 in this embodiment.

[0043] Instead of providing the cover 38, as shown in FIG. 6 (a), the icicle removing device 10 itself may be retracted and installed in building 1 rather than windbreak plate 5. Specifically, as shown in FIG. 6 (b), a box shape with a quadruple trough having an opening 5a cut into the center of the windbreak plate 5 in an elongated shape and a relatively deep recessed space 43a at the bottom. The base member 43 is inserted. Then, the base member 43 is fixed to the windbreak plate 5 by fixing a plurality of appropriate portions of the collar portion to the windbreak plate 5 with the bolts 44. If necessary, a reinforcing member for fixing the same may be further provided in the attic. Then, the icicle removing device 10 is accommodated in the recessed space 43a, and fixed thereto by an appropriate means. The rod-shaped body 20 emerges from the recessed space 43a during the operation of the icicle removing device 10 and is retracted therein.

As apparent from FIGS. 4 and 5, each of the four links L1 and L4 is constituted by a pair of upper and lower link pieces separated by a spacer and integrally combined. As a result, the rigidity of the advance / retreat mechanism 30 is enhanced.

Since the icicle removing device 10 of the present embodiment is configured as described above, the following operations and effects can be achieved.

Under the eaves, at least one long rod-shaped body 20 arranged close to the icicle 4 along the eaves 3 moves forward in a direction perpendicular to the longitudinal direction and protrudes forward. The icicles 4 hanging from the eaves 3 can collide with each other from the rear direction at the same time, and these icicles 4 can be pushed and removed at once. It can be carried out.

[0046] Since the long rod-shaped body 20 that forms the folding member of the icicle 4 does not form a closed loop shape such as a ring shape, it collides with the relatively large icicle 4 with a strong impact force from the rear direction. Even so, it is easy to make the structure resistant to deformation and damage, and the icicle removing device 10 having excellent durability can be provided.

[0047] In addition, since the advance / retreat mechanism 30 also has a planar four-bar linkage mechanism force, the advance / retreat mechanism 30 can be operated only by the rotation of the screw shaft 40, and the force of the advance / retreat mechanism 30 is all By making the advance / retreat mechanism 30 common, the drive source motor 42 can be combined into one, so that the configuration of the advance / retreat mechanism 30 can be made compact and simple.

[0048] In addition, the icicle removing device 10 has an axial center (support bar 34) parallel to the eaves 3 at the base end of the building 1 side. It can be swung over a range of a predetermined angle α around the axis of the icicle), so even if the snow that has fallen on the roof 2 falls on the icicle removal device 10 during the icicle removal work, The device 10 swings downward to drop the falling snow, escapes the weight of the snow, and continues the icicle removal work while restoring it, making the icicle removal smooth and reliable. be able to.

Furthermore, since the icicle removing device 10 includes a control means for operating the advance / retreat mechanism 30 at regular intervals, the icicle removing device 10 can be activated at regular intervals, and icicle removal can be performed. Before the icicle 4 grows so much that it becomes difficult, the icicle 4 can be pushed and removed, and the icicle can be removed more smoothly and reliably.

[0050] Furthermore, the building 1 with the icicle removal device 10 is also equipped with a cover 38 that can also cover the icicle removal device 10 with an upward force when the icicle removal device 10 is in an inactive state. In addition, since the recessed space 43a that can accommodate the icicle removing device 10 can be provided as the installation location, even if the protruding length of the eaves 3 of the building 1 is short, the icicle removing device 10 It prevents the accumulation of snow on the upper part, and eliminates the possibility of hindering its operation.

[0051] The invention of the present application is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

For example, this icicle removal device 10 is not limited to the roof 2 of the roof 2 of the building 1 such as a residence, but the shape and structure of the rod-like body 20 is appropriately changed, and the arrangement of the advance / retreat mechanism 30 is appropriately changed accordingly. By doing so, it can be applied to icicles in tunnels, overpasses, and other various structures.

Claims

The scope of the claims

[1] An icicle removal device used to remove icicles that grow naturally and hang down at the icicle generation points of various buildings, such as the eaves of a building roof,

At least one long rod-shaped body arranged in close proximity to the icicles,

An advancing / retreating mechanism for moving the rod-like body forward and backward in a direction perpendicular to the length direction, provided at least at two locations separated in the length direction of the rod-like body;

With

The advance / retreat mechanism advances the rod-like body and protrudes forward so that the rod-like body force can be removed by pushing these icicles from the rear direction.

An icicle removing device characterized by that.

[2] The advance / retreat mechanism is:

Four links are connected to each other at four joints so that they can rotate freely.

Among the four node points of the planar four-bar linkage mechanism, two node points facing each other in the longitudinal direction of the rod-shaped body are screwed with the screw shafts respectively, and the screw shafts rotate. The two remaining nodal points facing each other are moved away from and close to each other.

One of the remaining two nodal point portions facing each other is a fixed portion, and the other is a moving portion and is attached to the rod-shaped body.

The icicle removing apparatus according to claim 1, wherein:

[3] The icicle removing device is configured to be swingable over a predetermined angle range around an axis parallel to the rod-like body at a base end opposite to the side where the rod-like body is located. The icicle removing device according to claim 1 or 2, characterized in that:

[4] The icicle according to any one of claims 1 and 3, wherein the icicle removing device further includes control means for operating the advance / retreat mechanism at regular intervals. Removal device.