JP2019196608A - Mist spray device and installation method of mist spray pipe - Google Patents

Abstract

To provide a mist spray device capable of improving workability of installation work of a mist spray pipe, and an installation method of the mist spray pipe.SOLUTION: This mist spray device 10 comprises: a plurality of mist spray pipes 20 that have nozzles 22; a hose 25 for connecting the mist spray pipes 20; a wire 30 for stretching the mist spray pipes 20 connected by the hose 25 between a pair of support members 3, 4; a binding member 35 that binds the mist spray pipes 20 and the hose 25 to the wire 30 so as to be integrated with the wire 30; and a first reel 50 through which the mist spray pipes 20 and the hose 25 bound to the wire 30 can be wound and delivered together with the wire 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mist spraying device that is installed in a stretched manner between a pair of support members, and a method for installing a mist spraying tube.

  For example, in building demolition sites, construction sites, factories, etc., to prevent dust from scattering or to prevent workers from heat stroke, spray water into the work space in the form of mist. Has been done.

  In the following Patent Document 1, a pipe for flowing water is installed upward on the outer periphery of a multi-storey building, and tap water is sprayed from a spray nozzle attached to the upper end thereof. A cooling system is described (see FIGS. 3 and 4 of Patent Document 1).

  However, since the spray cooling system has a configuration in which one spray nozzle is attached to the upper end of one pipe line, there is a limit to the spray range of water by the spray nozzle, and every corner of the work site is limited. It is difficult to spray water up to.

  On the other hand, in Patent Document 2 below, a long support rod is suspended from a roof of a greenhouse, a house, or the like via a hanging tool such as a rope. There is described a spraying device having a structure in which a single long feed pipe is suspended through a support configured as described above. In addition, a plurality of spreaders (nozzles, etc.) are attached in the axial direction of the feed pipe. By supplying water from the feed hose to the feed pipe, water can be widely distributed from the spreaders. Be sprayed. The long feed pipe is configured by adding a metal pipe material with an appropriate connection means (see paragraph 0009 of Patent Document 2).

JP 2008-127804 A Japanese Patent No. 2759749

  In the spraying device of the above-mentioned Patent Document 2, when a plurality of pipe members are connected in advance through connecting means to form a single long feed pipe, the inside of a limited space such as in a greenhouse or house Then, handling is difficult. For this reason, a plurality of pipe materials are sequentially connected at the installation site. However, since such connection work is complicated, there is a problem in terms of installation workability of the supply pipe.

  Accordingly, an object of the present invention is to provide a mist spraying apparatus and a mist spraying tube installation method that can improve the workability of the mist spraying tube installation work.

  In order to achieve the above object, one of the present invention is a mist spraying device installed in a stretched manner between a pair of support members, having a water flow path inside, and mist-like water on the outer periphery. A plurality of mist spraying tubes having a nozzle for spraying, a hose connecting the plurality of mist spraying tubes, and a plurality of mist spraying tubes connected by the hose are stretched between the pair of support members. A wire for binding, the mist spray tube and / or the hose to the wire and binding the wire, and the mist spray tube and the hose bound to the wire. And a first reel that can be taken out and fed out together.

  According to the mist spraying device, when the wire is fed out from the first reel, the mist spraying tube and the hose bound to the wire via the binding member are also fed out, and the wire is paired with the pair of wires. By stretching between the support members, a plurality of mist spray tubes and hoses can be installed at a predetermined height via wires. The plurality of mist spraying tubes are connected to a hose, and the mist spraying tube and / or the hose are integrated by being bound to a wire by a binding member, and in this integrated state, the mist spraying tube and the hose are wound and delivered to the first reel. Therefore, it is not necessary to sequentially connect the hoses to the plurality of mist spray tubes at the installation location, and the workability of the mist spray tube installation work can be improved.

  In the mist spraying apparatus of the present invention, the first reel has a linear winding portion around which the mist spraying tube is wound, and a curved winding portion around which a hose connecting the mist spraying tubes is wound. preferable.

  According to this aspect, the mist spray tube integrated with the wire is wound around the first reel by winding the mist spray tube around the linear winding portion and winding the hose connecting the mist spray tubes around the curved winding portion. The tube and the hose can be wound in a compact shape.

  In the mist spraying device of the present invention, the wire has a tip portion extended longer than the mist spraying tube and the hose, and winds up the wire fed out from the first reel. It is preferable to further include a second reel.

  According to this aspect, the tip of the wire fed from the first reel is connected to the second reel, and the wire disposed between the pair of support members is stretched by winding the wire with the second reel. It can be easy to install.

  In the mist spraying apparatus of the present invention, it is preferable that the mist spraying device further includes a path changing member that is attached to at least one of the pair of support members and changes a path of the wire, the mist spraying pipe, and the hose.

  According to this aspect, the first reel is installed on the ground, for example, and the wire fed from the first reel is passed to the other support member via the course changing member attached to the one support member, By pulling the wire, the mist spray tube and the hose can be stretched between the support members via the wire. In addition, since the first reel can be installed on the ground, for example, it is possible to reduce labor and labor for carrying a heavy object upward.

  In the mist spraying apparatus of the present invention, the path changing member includes an extending portion that extends obliquely from the upper end portion of the support member, and a roller that is rotatably supported at the base end and the distal end of the extending portion. It is preferable to have.

  According to this aspect, the support rod is attached to the support member, and the wire fed from the first reel is pulled out via the rollers provided at the proximal end and the distal end of the extending portion, thereby changing the course of the wire. Can be pulled out smoothly.

  On the other hand, the installation method of the mist spraying tube which is another one of the present invention includes a plurality of mist spraying tubes having a water flow channel inside and a nozzle for spraying water in a mist shape on the outer periphery, A hose connecting the mist spraying pipes, a wire for stretching a plurality of mist spraying pipes connected by the hose between the pair of support members, the mist spraying pipe and / or the hose, A bundling member that binds to the wire and integrates with the wire, and a first reel that can wind and unwind the mist spray tube and the hose bound to the wire together with the wire. By using the mist spraying device provided, the wire is drawn out from the first reel, and the wire is stretched between a pair of support members, so that the mist spraying tube and the hose are attached together with the wire. Characterized in that it stretched between the pair of support members.

  According to the above-described installation method of the mist spraying tube, when the wire is unwound from the first reel, the mist spraying tube and the hose can be unwound together with the wire. Can be omitted. In addition, since the mist spray tube and the hose can be stretched together with the wire by stretching the wire between the pair of support members, the apparatus for installing the mist spray tube in the air can be simplified and the installation work can be performed. Can be improved.

  According to the above invention, the plurality of mist spraying tubes are connected to the hose, and the mist spraying tubes and / or the hose are bound to the wire by the binding member and integrated, and in this integrated state, the first reel Since winding and unwinding are possible, it is not necessary to sequentially connect hoses to a plurality of mist spray tubes at the installation location, and the workability of the mist spray tube installation work can be improved.

It is explanatory drawing which shows one Embodiment of the installation method of the mist spraying apparatus which concerns on this invention, and a mist spraying pipe | tube. It is a perspective view of the state which integrated the some mist spray pipe | tube, hose, and wire which comprise the spray apparatus with the binding member. It is an expansion perspective view of the state which integrated the some mist spray pipe | tube, hose, and wire which comprise the spray apparatus with the binding member. It is a perspective view which shows the connection structure of a mist spray pipe | tube and a hose in the spraying apparatus. It is a perspective view of the 1st reel which comprises the spraying apparatus. The 1st reel which comprises the spraying apparatus is shown, (a) is the front view, (b) is a side view. It is a perspective view of the state where a plurality of mist spraying tubes and hoses are wound around a first reel constituting the spraying device. The other shape of the course change member which comprises the spray apparatus is shown, (a) is explanatory drawing which shows 1st other shape, (b) is explanatory drawing which shows 2nd other shape. It is explanatory drawing which shows the 1st operation | work process by one Embodiment of the installation method of the mist spraying tube which concerns on this invention. It is explanatory drawing which shows the 2nd work process of the installation method. It is explanatory drawing which shows the 3rd work process of the installation method.

  Hereinafter, with reference to drawings, one embodiment of the installation direction of the mist spraying device concerning the present invention and the mist spraying pipe is described.

  As shown in FIG. 1, the mist spraying device 10 (hereinafter also simply referred to as “spraying device 10”) is installed in a stretched manner between a pair of support members 3, 4. In the case of the form, it is used for dust scattering prevention and space cooling at the demolition site of the building 1. The pair of support members 3, 4 are rod-like members that are fixed above the scaffolds 2, 2 installed on both sides of the building 1 dismantling site with wires or ropes (not shown).

  In addition, although the spraying apparatus 10 in this embodiment is used for the demolition site of the building 1, as a mist spraying apparatus, besides this, for example, the construction site of a building, the inside and outside of a factory, the indoor of a building, It can be applied to various places such as outdoors, stadiums, markets, bazaar venues, festival venues, etc., and is not particularly limited. The support member may be a natural object such as a tree, a part of a building, or the like, and is not particularly limited.

  As shown in FIG. 1 and FIG. 2, the spray device 10 in this embodiment includes a plurality of mist spray tubes 20 (hereinafter also simply referred to as “spray tubes 20”), a hose 25 connecting them, and a plurality of spray devices 10. A wire 30 for stretching the spray tube 20 between the pair of support members 3, 4, a bundling member 35 for binding the spray tube 20 and / or the hose 25 to the wire 30, and integrating the wire 30 with the wire 30, The spray tube 20 and the hose 25 that are bound to the wire 30 are provided with a first reel 50 that can be wound and fed out together with the wire 30.

  As shown in FIG. 3, the spray tube 20 in this embodiment includes a pipe main body 21 having a flow path of water inside and a straight pipe shape, and pipe main bodies 21 at both ends and a central portion of the pipe main body 21. And a plurality of nozzles 22 (three in this case) that are arranged so as to protrude from the outer periphery of the pipe body 21 and spray water in a mist shape toward the outer periphery of the pipe. is doing. Moreover, as shown in FIG. 4, the 1st connection part 23 which made the socket shape is attached to the both ends of the pipe main body 21. As shown in FIG. Note that the shape and structure of the mist spray tube is not limited to the above-described embodiment, and for example, it may be a short pipe shape with only one nozzle, or two or four or more nozzles may be provided. A plurality of nozzles 22 can be attached to the pipe body 21 by changing the direction of the nozzles 22.

  On the other hand, the hose 25 is made of a flexible material such as rubber, and a plug-like second connecting portion 26 as shown in FIG. 4 is attached to both ends thereof. . Then, the plug-like second connecting portion 26 is inserted into and extracted from the socket-like first connecting portion 23 of the spray tube 20, whereby the second connecting portion 26 is connected to the first connecting portion 23. As a result, as shown in FIGS. 2 and 3, a plurality of spray tubes 20, 20 are connected to each other via a hose 25. In addition, as a connection structure for connecting the plurality of spray tubes 20 and the hose 25, a well-known structure can be adopted in addition to the connection structure having a socket shape or a plug shape of k.

  Further, the wire 30 for stretching the plurality of spray tubes 20 connected by the hose 25 between the pair of support members 3 and 4 is formed by twisting a plurality of steel wires in the case of this embodiment. It is a so-called wire rope. As shown in FIG. 2, the wire 30 has a tip portion 31 that extends longer than the spray tube 20 and the hose 25, and is bound to the spray tube 20 and the hose 25 by a binding member 35. In this state, a portion where only the wire 30 exists is provided.

  Further, as shown in FIG. 3, the bundling member 35 of this embodiment binds the spray tube 20 to the wire 30 between the plurality of nozzles 22 and 22, and integrates the spray tube 20 and the wire 30. The hose 25 and the wire 30 are bound and integrated, and both the spray tube 20 and the hose 25 are bound to the wire 30. However, as the binding member 35, only the spray tube 20 and the wire 30 or only the hose 25 and the wire 30 may be bound. In addition, as a binding member, a well-known harness band, an adhesive tape, a rubber band, etc. can be used.

  Next, a description will be given of the first reel 50 capable of winding and feeding the spray tube 20 and the hose 25 bound to the wire 30 together with the wire 30 with reference to FIGS.

  The first reel 50 of this embodiment includes a pair of side plates 51 and 51 arranged to be parallel to each other with a predetermined interval, and a plurality of connecting rods 52 that connect the side plates 51 and 51 to each other. The base plate 55 has a base 55 that rotatably supports the pair of side plates 51 and 51 via a support shaft 55a.

  The side plate 51 is in the shape of a long plate, and is formed into a circular shape and a straight side portion 51a, 51 that extends linearly in parallel with each other, and an end portion of the straight side portions 51a, 51a is connected to each other. It has arc-shaped side parts 51b and 51b.

  Further, a plurality of connecting rods 52 are arranged at predetermined intervals along the peripheral edge of the linear side portion 51a of the side plate 51, and the straight side connecting rod 52a for connecting the side plates 51 and 51 to each other, and the side plate An arc-side connecting rod 52b that is disposed inside the arc-shaped side portion 51b of 51 and connects both side plates 51 and 51 to each other.

  And as shown to Fig.6 (a), the linear winding to which the spray tube 20 winds by the linear side part 51a of a pair of side plates 51 and 51, and the linear side connecting rod 52a arrange | positioned in multiple numbers at the periphery is carried out. On the other hand, the hose 25 that connects the spray tubes 20 and 20 is wound by the arc-shaped side portions 51b of the pair of side plates 51 and 51, and the arc-side connecting rods 52 and b disposed inside thereof. A curved winding portion 54 is formed. In this embodiment, a pair of linear winding parts 53 and 53 and a pair of curved winding parts 54 and 54 arrange | positioned at the both ends are provided.

  As a result, as shown in FIG. 7, the plurality of spray tubes 20 are wound around the pair of linear winding portions 53, 53 of the first reel 50, and the spray tubes are wound around the pair of curved winding portions 54, 54. A hose 25 connecting the 20, 20 is wound around.

  As shown in FIG. 1, the first reel 50 in this embodiment is installed below the scaffold 2 to which one of the pair of support members 3 and 4 is fixed. It has become.

  Further, as shown in FIG. 1, the spray device 10 of this embodiment further includes a second reel 60 for winding the wire 30 fed from the first reel 50. Since the second reel 60 has the same structure as the first reel 50, a detailed description thereof is omitted. The second reel 60 is installed below the scaffold 2 to which the other support member 4 of the pair of support members 3 and 4 is fixed. Further, since the second reel 60 is mainly used for winding up the distal end portion 31 of the wire 30, it may be constituted by a normal reel having a cylindrical shape.

  Further, the spray device 10 of this embodiment is attached to both of the pair of support members 3 and 4, and the route changing member for changing the route of the wire 30 and the spray tube 20 and the hose 25 integrated with the wire 30 is provided. 70.

  As shown in FIG. 1, the course changing member 70 in this embodiment is attached to the upper ends of a pair of support members 3 and 4, and a support bar 71 extending horizontally outward, and the support bar 71. The roller 73 is rotatably supported at a predetermined position via a roller support portion 72. As shown in FIG. 1, the moving direction of the wire 30, the spray tube 20, and the hose 25 can be changed from the vertical direction to the horizontal direction, or from the horizontal direction to the vertical direction by the course changing member 70. Yes.

  In addition, as a course change member, it is not limited to the said aspect, The aspect described in FIG. 8 may be sufficient. The course changing member 70A shown in FIG. 8A includes a support rod 71 attached to the support members 3 and 4, an extension portion 74 extending obliquely outward from the upper end portion of the support rod 71, and The extending portion 74 has a pair of rollers 73 and 73 rotatably supported at the proximal end and the distal end.

  Further, the course changing member 70B shown in FIG. 8B has an arc shape with the support rod 71 attached to the support members 3 and 4, and extends outward from the upper end of the support rod 71. The extended portion 75 is provided.

  Next, the installation method of the mist spraying pipe | tube by this invention using the spraying apparatus 10 which comprised the said structure is demonstrated.

  That is, in this mist spraying tube installation method, using the mist spraying device 10 having the above-described structure, the wire 30 is unwound from the first reel 50 and the wire 30 is stretched between the pair of support members 3 and 4. Thus, the mist spray pipe 20 and the hose 25 are stretched between the pair of support members 3 and 4 together with the wire 30.

  This installation work will be described more specifically. As a preparation work, first, as shown in FIG. 4, the second connection part 26 of the hose 25 is inserted into the first connection part 23 of the spray tube 20, The operation | work which connects the 2nd connection part 26 to the 1 connection part 23 is performed, and the some spray tube 20 is connected with the hose 25. FIG. Furthermore, the wire 30 is allowed to run along the plurality of spray tubes 20 and the hoses 25 while leaving the distal end portion 31 of the wire 30, and the wire 30 and the spray tubes 20 and the hose 25 are bound by a binding member 35 at a predetermined location. Thus, as shown in FIG. 2 and FIG. 3, the wire 30, the plurality of spray tubes 20, and the hose 25 are integrated via the binding member 35.

  After that, when the spray tube 20 and the hose 25 integrated with the wire 30 are wound around the first reel 50, a plurality of linear winding portions 53, 53 of the first reel 50 are arranged on the first reel 50 as shown in FIG. The spray tube 20 is wound in an aligned state, and a hose 25 for connecting the spray tubes 20 and 20 is wound around the pair of curved winding portions 54 and 54. Thus, in this embodiment, a plurality of spray tubes 20 can be wound around the linear winding portion 53, and the hose 25 connecting the spray tubes 20 can be wound around the curved winding portion 54. Therefore, the spray tube 20 and the hose 25 integrated with the wire 30 can be wound around the first reel 50 in a compact shape.

  And as shown in FIG. 9, the spray tube 20 and the hose 25 which were integrated with the wire 30 were wound below the one scaffolding 2 provided in the one side part of the building 1 which should be demolished, The reel 50 is installed, and the second reel 60 is installed below the other scaffold 2 provided on the other side of the building 1.

  Next, as shown in FIG. 9, the wire 30 is unwound from the first reel 50, and its leading end portion 31 is hooked on the roller 73 of the course changing member 70 attached to one of the support members 3. Through 70, the traveling direction of the wire 30 is changed from upward in the vertical direction to left in the horizontal direction, and the wire 30 is further pulled.

  Thereafter, the wire 30 is pulled from one side of the building 1 toward the other side, and the wire 30 is attached to the other support member 4 as shown in FIG. By hooking on the roller 73, the traveling direction is changed from the horizontal left direction to the vertical downward direction through the path changing member 70, and the wire 30 is further pulled, so that the tip 31 of the wire 30 is moved to the second reel. 60 is connected to a predetermined connecting rod 52 (not shown).

  In this state, the winding tube 20 and the hose 25 integrated with the wire 30 are fed out from the first reel 50 while winding the tip 31 of the wire 30 with the second reel 60, as shown in FIG. The course is changed via the course changing member 70, and the plurality of spray tubes 20 and the hose 25 are arranged between the pair of support members 3 and 4. Thereafter, when the wire 30 is further wound up by the second reel 60 and the spray tube 20 and the hose 25 integrated with the wire 30 are fed out from the first reel 50, as shown in FIG. The wire 30 is stretched between 3 and 4, and the plurality of spray tubes 20 and the hose 25 can be installed at a predetermined height via the wire 30.

  Thus, in this installation method and spraying apparatus 10, the plurality of spraying tubes 20 are connected to the hose 25, and the spraying tube 20 and / or the hose 25 are bound to the wire 30 by the binding member 35 and integrated. In this integrated state, the first reel 50 can be wound and fed out, so that it is not necessary to sequentially connect the hose 25 to the plurality of spray tubes 20 at the installation place, and the spray tube 20 and the hose 25 are connected to each other. Since the connection work at the installation place can be omitted, the workability of the installation work of the spray tube 20 can be improved. Moreover, since the wire 30 is stretched between the pair of support members 3 and 4, the mist spray tube and the hose can be stretched together with the wire 30, so that the apparatus for installing the spray tube 20 in the air is simplified. In addition, the installation workability can be improved.

  As described above, after a plurality of spray tubes 20 are installed at a predetermined height at a predetermined location, the most proximal end portion of the hose 25 is connected to the water supply vehicle 6 as shown in FIG. In this state, when water is supplied through the water supply vehicle 6, water is sprayed in a mist form from the nozzles 22 of the plurality of spray pipes 20 through the hose 25, so that the space at the installation location is cooled. It is possible to prevent heat stroke etc. of the worker.

  Further, in this embodiment, the wire 30 has a distal end portion 31 that is longer than the spray tube 20 and the hose 25, and takes up the wire 30 that is fed from the first reel 50. Two reels 60 are further provided. According to this, the tip 31 of the wire 30 fed out from the first reel 50 is connected to the second reel 60, and the wire 30 is taken up by the second reel 60, so that the pair of support members 3, 4 are separated. It is possible to make it easier to stretch the wire 30 disposed on the wire.

  Further, in this embodiment, the spray tube 20 and the hose 25 are attached to at least one of the pair of support members 3 and 4 (here, both support members 3 and 4) and are integrated with the wire 30 and the wire 30. There is further provided a route changing member 70 for changing the route. According to this, the first reel 50 is installed on the ground, for example, and the wire 30 fed out from the first reel 50 is connected to the other via the route changing member 70 attached to the one support member 3. The spray tube 20 and the hose 25 can be stretched between the support members 3 and 4 via the wire 30 by passing the support member 4 and pulling the wire 30. Moreover, since the 1st reel 50 can be installed on the ground, for example, the effort and labor which carry a heavy thing upward can be reduced.

  Further, as a course changing member, as shown in FIG. 8A, a support rod 71 attached to the support members 3 and 4, an extension portion 74 extending obliquely from the upper end portion of the support rod 71, and When the course changing member 70A having the rollers 73 and 73 rotatably supported at the proximal end and the distal end of the extending portion 74 is employed, the following operational effects can be obtained. That is, the support rod 71 is attached to one or both of the support members 3 and 4, and the wire 30 fed out from the first reel 50 is passed through rollers 73 and 73 provided at the proximal end and the distal end of the extending portion 74. By pulling out, the path of the wire 30 can be changed and pulled out smoothly.

  Further, the present invention is not limited to the above-described embodiments, and various modified embodiments are possible within the scope of the present invention, and such embodiments are also included in the scope of the present invention. .

DESCRIPTION OF SYMBOLS 1 Building 2 Scaffolding 3 and 4 Support member 6 Water supply truck 10 Mist spraying device (spraying device)
20 Mist spray tube (spray tube)
21 Pipe body 22 Nozzle 23 First connecting portion 25 Hose 26 Second connecting portion 30 Wire 31 Tip portion 35 Bundling member 50 First reel 51 Side plate 51a Linear side portion 51b Arc side portion 52 Connecting rod 52a Linear side connecting rod 52b Arc-side connecting rod 53 Linear winding portion 54 Curved winding portion 55 Base 55a Support shaft 60 Second reel 70, 70A, 70B Path changing member 71 Support rod 72 Roller support portion 73 Rollers 74, 74 Extension portion

Claims (6)

A mist spraying device installed to be stretched between a pair of support members,
A plurality of mist spraying tubes having a water flow path inside and a nozzle for spraying water in a mist shape on the outer periphery;
A hose connecting the plurality of mist spraying tubes;
A wire for stretching a plurality of mist spraying tubes connected by the hose between the pair of support members;
A bundling member for bundling the mist spray tube and / or the hose to the wire and integrating with the wire;
A mist spraying apparatus comprising: a first reel capable of winding and unwinding the mist spraying tube and the hose bound to the wire together with the wire.   2. The mist spraying device according to claim 1, wherein the first reel includes a linear winding portion around which the mist spraying tube is wound and a curved winding portion around which a hose connecting the mist spraying tubes is wound.   The wire has a tip that extends longer than the mist spray tube and the hose, and further includes a second reel that winds up the wire fed from the first reel. The mist spray tube installation device according to claim 1.   The mist spray according to any one of claims 1 to 3, further comprising a path changing member attached to at least one of the pair of support members and changing a path of the wire, the mist spray pipe, and the hose. apparatus.   5. The path changing member includes an extending portion that extends obliquely from an upper end portion of the support member, and a roller that is rotatably supported at a proximal end and a distal end of the extending portion. The mist spraying device as described. A plurality of mist spraying tubes having a water flow path inside and a nozzle for spraying water in a mist shape on the outer periphery;
A hose connecting the plurality of mist spraying tubes;
A wire for stretching a plurality of mist spraying tubes connected by the hose between the pair of support members;
A bundling member for bundling the mist spray tube and / or the hose to the wire and integrating with the wire;
Using a mist spraying device provided with a first reel that can be wound and unwound together with the wire, the mist spraying tube and the hose bound to the wire,
The wire is drawn out from the first reel, and the wire is stretched between a pair of support members, whereby the mist spray tube and the hose are stretched between the pair of support members together with the wire. The installation method of the mist spraying tube characterized by the above-mentioned.

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