JPH0816410B2 - Air injection type snow removal device - Google Patents

Description

The present invention relates to a snow removing device for a membrane roof.

《Conventional technology》 In the conventional retractable roof, the exhaust heat of the roof is used,
The air containing the exhaust heat was blown to the back of the roof to melt the snow.

However, in such a snow melting type snow removing device, if the beam for movably supporting the roof remains, it is possible to use this supporting beam to pipe the air supply duct, In recent open / close type roofs, in order to minimize the moving power capacity, the outer peripheral center moving type in which the respective roof members are moved so as to be vertically overlapped with each other is not adopted so much and the horizontal turning moving type is adopted.

In such a horizontal rotation movement method, since the supporting beams and the like are not required, there remains a difficulty in how to connect the air supply duct in the snow melting type snow removing device.

In addition, the ridge cables and suspend cables that support the membrane roof tend to be dented, and if there is snow, the snow in this dented portion cannot be easily removed even if it is slid from the roof surface. It remained on the surface, which in turn caused a significant increase in the weight of the roof.

<< Problems to be Solved by the Invention >> Therefore, even if the roof surface is simply scanned in a plane by some mechanical means, the moving roof has a small moving power capacity because snow remains in the recessed portion, or Contrary to the ideal of being as light as possible in order to simplify its support structure, the problem arises that every part of the roof must be reinforced strongly to withstand the snow load. Also led to an increase in weight.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a non-contact air-jet type snow removing device that does not leave snow in a recessed portion of a membrane roof or prevents snow accumulation in advance. Especially.

<< Means for Solving the Problem >> In order to achieve the above object, an air jet provided on a membrane structure roof in which a plurality of air jet type roof membranes according to the present invention are joined and supported by a joint material. A snow removing device, which is provided on an upper portion of a joint material, has an air injection nozzle having an injection port near the joint material, an air supply pipe which is supported by the joint material, and which sends compressed air to the air injection nozzle, and the air supply pipe. And an electromagnetic valve provided in the air supply path between the nozzle and the injection nozzle.

<< Operation >> According to the air-injection type snow removing device of the present invention having the above-mentioned configuration, the compressed air is supplied from the air supply pipe to the air injection nozzle via the air supply path by opening the solenoid valve. Air is jetted from the air jet nozzle toward the vicinity of the joint material.

At this time, the air injection nozzle is arranged on the upper portion of the joint material, and injects the compressed air toward the vicinity of the joint material.
It is possible to efficiently remove snow or prevent snow accumulation in the vicinity of the joint material where the roof membranes are joined to each other and are more likely to accumulate snow than other places.

Moreover, the air injection nozzle and the air supply pipe are arranged and directly supported by a joint material that is structurally robust in order to join and support the membrane roof, and the weight of the air injection nozzle and the air supply pipe is reduced. It does not act on the roof, and the deterioration of the membrane roof can be reduced, thereby preventing the membrane roof from being damaged.

«Examples» Hereinafter, preferred examples of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows a complete view of an openable dome roof to which the snow removing device 1 of the present invention is applied, and this dome roof has a hemispherical dome roof formed on an outer peripheral wall 2 standing in a circular shape. , This dome roof comprises a crescent-shaped fixed roof 3 on the left side, and the lower part of the right roof is a swivel roof 4 that splits left and right on the outer peripheral wall 2 and swivels toward the fixed roof. The roof portion that overlaps the swivel roof 4 is rotatably fixed to the right end of the swivel roof 4 with a shaft 6, and the shaft 6 is centered from the upper right side of the dome roof toward the swivel roof 4. It is a rotating roof 5 that overlaps by descending while rotating.

If the swivel roof 5 gets on top of the swivel roof 4,
As it is, the swivel roof 4 swivels on the outer peripheral wall 2 integrally with the swivel roof 5 and is housed on the fixed roof 3 side.

The roof membranes constituting the fixed roof 3, the swivel roof 4, and the swivel roof 5 are supported by the suspending cave, and the valley portion 7 is recessed along the cable.

 FIG. 2 shows details of the valley portion 7.

The roof membrane 8 is formed into a dome-shaped roof easily, and small pieces of woven cloth are spliced with a splicing material 9 so that the roof is convenient for maintenance. It is configured to overlap and is supported by the suspend cable 10.

A plate 1 with a spacer 11 that keeps a certain space above and below
An air supply duct 14 for sending compressed air is passed between a plate material 12 and a plate material 12a of a mounting base 13 composed of 2, 12a, and further a plate material 1
Two suspend cables 1 parallel to the left and right between 2 and 12a
0 through 10. FIG. 3 shows the details of the cross section of supporting and joining the roof membrane 8 as described above.

The edge of the roof membrane 8 is a plate member 12 that constitutes the top of the mounting base 13.
The roof membrane 8a is connected and joined to the adjacent roof membrane 8a at a location where the joint material 9 is formed integrally with the mounting base 13 on a.

That is, the edge portion of the left roof membrane 8 and the edge portion of the right roof membrane 8a are folded back so as to be wound around a wire or the like as a core, and the folded portion is sandwiched from above and below with a washer or the like. Cover with the protective material 15 that protects the roof membranes 8 and 8a so as to wrap around the folded portions and the washers.
Further, apply a U-shaped pad 16 on the protective material 15,
Protective material 15, washer, roof membrane 8,8a
Of the roof membranes 8 and 8a by screwing nuts onto the lower end portions of the tightening bolts 17 that pass through the folded-back portions of the upper plate 12a and the upper plate 12a and further penetrate the plate 12 below the mounting base 13 through the spacer 11. The edges of the are tightly sandwiched.

Then, the plate material 12 on the lower side of the mounting base 13 is the frame 18 of the roof.
It is attached to the nut with.

Thus, a solenoid valve 20 that opens and closes the air supply passage of the pipe 19 is provided in the middle of the pipe 19 that communicates with the air supply duct 14 and goes straight above the mounting base 13. The lead wire for controlling the solenoid coil and the like inside is connected to the controller so that the air supply path inside the pipe 19 is intermittently opened and closed. Further, three air injection nozzles 21 are attached to the top of the pipe 19 at intervals of 120 ° around the center of the pipe 19, and the tips of the air injection nozzles 21 are bent in a hook shape downwardly. is there. Further, since a considerable amount of high-pressure compressed air is sent to the air injection nozzle 21, it is firmly fixed by the reinforcing plate 22 so as to be firmly attached to the pipe 19 so as to sufficiently withstand the reaction force of the injection air.
According to the snow removal device 1 of FIG. 3, when the solenoid valve 20 is opened, the compressed air in the air supply duct 14 is moved by the air injection nozzle 21 from above to the valley portion 7 of the roof along the axis around the pipe 19. Compressed air is jetted to the splicing material 9 where it tends to be broken. When the shape of the air injection nozzle 21 is not only bent downward into a hook shape but is also bent slightly in the circumferential direction of the pipe 19, the rotational force about the pipe 19 as a rotation axis by the injection reaction force when the compressed air is injected. Therefore, when the air injection nozzle 21 is rotatably engaged with the top of the pipe 19, the air injection nozzle is
The compressed air ejected from 21 can be ejected in all directions of 360 ° around the axis of the pipe 19 for effective snow removal.

The snow creeper 1 shown in FIG. 3 has a mounting base 13 and a roof membrane 8,
In order to protect the edge portion of 8a from rainwater, the metal fitting 16 and the protective material 15 are covered from the front surface to the side surface of the metal fitting 16 and cut into the outer rear surface of the protective material 15 to seal the joint material 9 portion. A vertical pipe that has a cover 23 and further penetrates the cover 23.
While the rubber cap 25 covering the rising portion 24 around 19 is provided, the snow removal device 1a of FIG. 4 has a simpler configuration. This is a pipe 20 communicating with the air supply duct 14.
A is bent gently, an electromagnetic valve 20a is provided in the middle of the bent a, and an injection nozzle 26 that spreads flat at the tip is attached. And this pipe 19a has a hemispherical bowl-shaped cover 2
The injection nozzle 26 is fitted through the side surface of 7 and the protruding portion. This is attached to a semi-circular mounting board 28 so that it can be easily attached to any place, and when this is mounted on the mounting base 13, the pipe 19a through which compressed air passes is the mounting board 2
It penetrates through the center of 8. Cover the lead wire of solenoid valve 20a
It passes through the inside of the mounting board 28, passes through the inside of the board 27, and exits to the outside.

Another embodiment is shown in FIGS. This is provided with a compressed air injection nozzle at the top of the mounting base 13 as in the snow removing device 1a of FIG. 4, but has a vertical pipe 29 corresponding to the pipe 19.

The pipe 19 communicates with the air supply duct 14 and passes vertically through the cover 23. Similarly, the vertical pipe 29 also vertically passes over the cover 23, and the auxiliary air supply runs in parallel in the axial direction of the mounting base 13. A duct 30 is arranged, and this air supply duct 30 is connected to the top of the vertical pipe 29 for communication.

That is, the top of the vertical pipe 29 is connected to the auxiliary air supply duct 30.

To this end, a connector that projects downward is formed integrally with the duct 30 below the auxiliary air supply duct 30, and the protruding connector is press-fitted on the top of the vertical pipe 29 to further assist the auxiliary air supply duct 30. Is fixed to the cover 23 with a U-shaped pressing fitting 31.

The nozzle 32 for injecting compressed air has a solenoid valve at the base.
20a, which are symmetrically connected to both sides of the auxiliary air supply duct 30 to cancel out the injection reaction forces.

In the embodiment shown in FIGS. 5 and 6, the solenoid valve 20a covers the cover 2.
Since it is on the outside of 3 and the solenoid valve 20a is also exposed to the outside,
Convenient for maintenance of electrical wiring and valves.

Further, since the injection reaction forces are canceled by the left and right nozzles 32, the structure for fixing the nozzles 32 can be simplified, and the desired number of auxiliary air supply ducts 30 can be easily attached.

<Effect> As described in detail above, according to the air injection type snow removal device of the present invention, by opening the solenoid valve, compressed air is supplied from the air supply pipe to the air injection nozzle via the air supply path, This compressed air is jetted from the air jet nozzle toward the vicinity of the joint material.

At this time, the air injection nozzle is arranged on the upper portion of the joint material and injects the compressed air toward the vicinity thereof, so that the roof membranes are joined to each other and snow is removed near the joint material which is more likely to accumulate snow than other places. It is possible to efficiently prevent snow accumulation.

Moreover, the air injection nozzle and the air supply pipe are arranged and directly supported by a joint material that is structurally robust in order to join and support the membrane roof, and the weight of the air injection nozzle and the air supply pipe is reduced. It does not act on the roof, and the deterioration of the membrane roof can be reduced, thereby preventing the membrane roof from being damaged.

[Brief description of drawings]

FIG. 1 is a perspective view showing an opening / closing dome roof that seems to require the snow removing device of the present invention most, and FIG. 2 is a perspective view showing a state of an air injection type snow removing device attached to a valley portion of a membrane roof, FIG. 3 is a vertical cross-sectional view of an air injection type snow removing device, FIG. 4 is a perspective view showing an air injection type snow removing device according to another embodiment, and FIG. 5 is an air injection type snow removing device according to yet another embodiment. FIG. 6 is a longitudinal sectional view of FIG. 6, and FIG. 6 is an overall perspective view of the apparatus of FIG. 1 ... snow removing device, 2 ... outer peripheral wall 3 ... fixed roof, 4 ... swivel roof 5 ... swivel roof, 6 ... axis 7 ... valley part, 8 ... roof membrane 9 ... joint material 10 ...... Suspend cable 11 …… Spacer, 12 …… Plate material 13 …… Mounting base, 14 …… Air supply duct 15 …… Protective material, 16 …… Metal fitting 17 …… Tightening bolt, 18 …… Frame 19 …… Pipe, 20 …… Solenoid valve 21 …… Air injection nozzle, 22 …… Reinforcement plate 23 …… Cover, 24 …… Rise part 25 …… Rubber cap, 26 …… Injection nozzle 27 …… Cover, 28 …… Mounting board 29 …… Vertical pipe, 30 …… Auxiliary air supply duct 31 …… Holder, 32 …… Injection nozzle

Claims (1)

[Claims] 1. An air-injection type snow removing device, which is arranged on a membrane-structured roof in which a plurality of roof membranes are joined and supported by a jointing material, which is arranged on an upper portion of the jointing material. An air injection nozzle with an injection port facing the vicinity of the material, an air supply pipe that is supported by the joint material and sends compressed air to the air injection nozzle, and an air supply path between the air supply pipe and the injection nozzle. Air-injection type snow removal device, characterized in that