JPH1019433A - Telescopic built-up tube for fluid and snow falling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a built-up tube for fluid to be frequently telescopic and supplied with high pressure water. SOLUTION: A first opening flange 14 and a fixed tube flange 18 are secured to a fixed tube S. The flange 18 has a fixed tube sealing ring 19. A first tube slide ring 22 is mounted at a first end of a first tube R1 disposed in the tube S, and a first flange 32 is clamped at a second end of the tube R with a nut 31. When the tube R1 is drawn from the fixed tube at the maximum, the ring 22 is engaged with the ring 19 to prevent the tube R1 from being further drawn. When the tube R is inserted into the tube S at the maximum, the flange 32 is engaged with the flange 18 to prevent the tube R2 from being further inserted. A socket 27 communicating with a movable tube flange 24 having a second opening 26 and with the opening 26 is provided at a second end of a third tube R3 .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic fluid pipe for supplying or discharging a fluid such as high-pressure water or air, and a snowfall machine using such a fluid pipe.

[0002]

2. Description of the Related Art In order to compensate for the lack of snow on a ski slope at a ski resort, for example, a fixed snowfall apparatus as disclosed in Japanese Utility Model Publication No. 7-44926 is used. Fixed snowfall equipment
Water and high-pressure air are sprayed from a spray nozzle on a fixed pole fixed to the ground into air below the freezing temperature, and the atomized water is frozen and sprayed in the air. In the snowfall device described in this publication, the direction of the spray nozzle can be changed. However, since water and high-pressure air are supplied to the spray nozzle by a fixed air pipe and a water supply hose, respectively, the snowfall range is widened. I couldn't do that.

[0003] The ice and snow accumulating and spraying device described in Japanese Patent Application Laid-Open No. 7-4805 is provided with a telescopic ice and snow supply pipe which is arranged on a pillar and is rotatably supported around a vertical axis. Although it is possible to spray ice and snow over a wide range, this device ejects ice and snow supplied from an ice and snow supply facility from an ice and snow supply pipe and an ice and snow blowing nozzle disposed at the tip thereof, and is atomized by a spray nozzle. Unlike a snowfall machine that freezes and sprays water in the air, it is necessary to provide an ice and snow supply facility, and a telescopic ice supply pipe that can expand and contract is provided with relatively high-pressure water such as that supplied to a spray nozzle of the snowfall machine. Alternatively, it does not have a sealing property necessary for conveying air.

[0004] Conventional mounts of a fixed type snowfall machine are generally fixed at an installed position and perform snowfall work in a fixed direction. The range was limited to a narrow range.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to allow a relatively high-pressure fluid, for example, water or air of about 20 kg / cm ² supplied to a spray nozzle of a snowfall machine to pass therethrough with almost no leakage. A predetermined distance, for example, 10 m to 30 m suitable for the working range of the spray nozzle of the fixed snowfall machine
The object of the present invention is to provide an assembled tube that can be extended and contracted relatively frequently.

Another object of the present invention is to reduce the overall length of the assembled tube by increasing the number of overlapping portions of the plurality of concentric tubes constituting the assembled tube, for example, by a telescopic boom assembly. And, conversely, to provide a telescoping fluid assembly tube that is elongated by reducing the overlapping portion of the plurality of concentric tubes.

Another object of the present invention is that when the assembly tube is extended, the interconnected outer and inner conduits of the plurality of conduits forming the assembly tube do not come off from each other due to the simple structure, and It is an object of the present invention to provide a fluid assembly tube in which, when the assembly tube is shortened, the inner conduit of the assembly tube does not overload the outer conduit with a simple structure.

Still another object of the present invention is to use a telescopic fluid assembly pipe to supply water or air to a spray nozzle of a snowfall machine and to change the position of the spray nozzle horizontally or vertically. Accordingly, it is an object of the present invention to provide a snowfall machine capable of snowfall efficiently over a wide area. Still another object of the present invention is to provide a snowfall machine in which the direction of spraying water from a spray nozzle can be changed in such a snowfall machine so that snowfall can be made uniformly over a wide range. Other objects of the present invention will be apparent from the following description and drawings.

[0009]

According to the present invention, there is provided an assembling tube for a telescopic fluid, wherein a part of a movable tube is concentrically arranged inside a fixed tube, a first opening is provided at a first end of the fixed tube, and the fixed tube has a first opening. A fixed pipe flange is fixed to two ends. The fixed pipe flange includes a fixed pipe sealing ring slidably and sealingly engaged with the outer circumference of the movable pipe to seal between the second end of the fixed pipe and the outer circumference of the movable pipe. A movable tube sliding ring is fixed to a first end of the movable tube located inside the fixed tube. The movable tube sliding ring is slidably and sealingly engaged with the inner peripheral surface of the fixed tube to seal between the inner peripheral surface of the fixed tube and the first end of the movable tube.

A movable pipe flange and a second opening are provided at the second end of the movable pipe, and when the movable pipe is pulled out from the inside of the fixed pipe to the maximum, the movable pipe sliding ring engages with the fixed pipe sealing ring and the movable pipe slides. Prevent further withdrawals. When the movable tube is fully inserted into the fixed tube, the movable tube flange engages the fixed tube flange to prevent further insertion of the movable tube. The fluid flows through the first opening, the inside of the fixed tube, the inside of the movable tube, and the second opening.

According to another feature of the invention, the movable tubes are first, second,..., Tubes arranged concentrically from outside to inside.
-Consisting of an (n-1) th pipe and an nth pipe (n ≧ 3), the fixed pipe sealing ring is slidably and sealingly engaged with the outer circumference of the first pipe, and the second end of the fixed pipe and the outer circumference of the first pipe. The movable tube sliding ring is disposed at the first end of the first tube located inside the fixed tube, and slidably and sealingly engages with the inner peripheral surface of the fixed tube. Seal between the tube first ends. A first pipe flange is secured to the second end of the first pipe, the first pipe flange including a first pipe sealing ring slidably and sealingly engaged with an outer peripheral surface of the second pipe.
The space between the second end of the pipe and the outer peripheral surface of the second pipe is sealed. When the first tube is pulled out of the interior of the fixed tube to the maximum, the movable tube sliding ring engages the stationary tube sealing ring to prevent further withdrawal of the first tube, and the first tube is moved into the interior of the fixed tube at the maximum. The first tube flange engages the fixed tube flange when inserted into the tube to prevent further insertion of the first tube.

A second pipe located inside the first pipe has a second end at a first end.
A pipe slide ring is disposed to slidably and sealingly engage the first pipe inner peripheral surface to seal between the first pipe inner peripheral surface and the second pipe first end. An (n-1) -th pipe flange is fixed to a second end of the (n-1) -th pipe on the second opening side, and the (n-1) -th pipe flange is slidably and sealingly engaged with the outer peripheral surface of the n-th pipe. A pipe sealing ring is provided to seal between the second end of the (n-1) th pipe and the outer peripheral surface of the nth pipe. Nth
The n-th pipe sliding ring is fixed to the first end of the n-th pipe located inside the (-1) -th pipe, and the n-th pipe sliding ring is slidably and sealingly engaged with the inner peripheral surface of the (n-1) -th pipe. -1 Seal between the inner peripheral surface of the tube and the first end of the n-th tube. The movable pipe flange and the fluid outlet
At the second end of the tube, the n-th tube sliding ring engages the (n-1) -th tube sealing ring when the n-th tube is maximally withdrawn from the inside of the (n-1) -th tube, and further moves the n-th tube. Stop withdrawing,
When the n-th tube is fully inserted into the (n-1) -th tube, the movable tube flange engages the (n-1) -th tube flange to prevent further insertion of the n-th tube.

According to another characteristic of the present invention, each sliding ring has a structure in which a packing having a U-shaped cross section is accommodated in each ring groove. The telescopic fluid assembly pipe is provided with a boom (girder) having a box-shaped cross section, for example, arranged in parallel with a boom assembly of a box-shaped boom type crane that telescopically expands and contracts in two to six steps, and each pipe flange is formed. Are connected to corresponding portions of the boom assembly and are supported by the boom assembly, and each tube is moved by movement of the corresponding portion of the boom assembly.

In accordance with yet another aspect of the present invention, a telescopic fluid assembly tube is disposed parallel to the telescopic boom assembly and a movable tube flange is connected to a corresponding portion of the boom assembly. The movable tube flange is supported by the boom assembly and is moved by movement of a corresponding portion of the boom assembly. The telescopic fluid assembly pipes are respectively arranged in parallel on both sides of the telescopic boom assembly, and a movable pipe flange of each assembly pipe is connected to a corresponding part of the boom assembly to thereby form the boom assembly. And the high-pressure water and high-pressure air are supplied to the spray nozzle for snowmaking located at the tip of the boom assembly through a pair of assembly pipes. The base of the boom assembly is supported by a horizontal support shaft disposed on a support table, and the height of the tip of the boom assembly changes by rotating the base of the boom assembly around the support shaft. The horizontal position of the tip of the boom assembly can be changed by rotating the support about a vertical axis, and the spray nozzle is positioned in the horizontal and vertical planes relative to the longitudinal direction of the boom assembly. According to another feature of the invention, the base of the telescopic boom assembly of the snowfall is supported by a horizontal support shaft located on a support, and the boom assembly is The height of the end of the boom assembly can be changed by rotating the base around the support shaft, and the horizontal position of the end of the boom assembly can be changed by rotating the support base around the vertical axis. Possible The water spray nozzle can be changed by a predetermined angle with respect to the longitudinal direction of the boom assembly in a horizontal plane and a vertical plane.

[0015]

In the assembled pipe of the present invention, the fixed pipe flange is provided with a fixed pipe sealing ring slidably and sealingly engaged with the outer circumference of the movable pipe to seal between the second end of the fixed pipe and the outer circumference of the movable pipe. ,
A movable tube sliding ring is fixed to a first end of the movable tube located inside the fixed tube, and the movable tube sliding ring is slidably and sealingly engaged with an inner peripheral surface of the fixed tube and is fixed to the inner peripheral surface of the fixed tube and the movable tube. Seal between the ends. Therefore, the relatively high-pressure fluid in the assembled pipe does not leak from the ends of the fixed pipe and the movable pipe, and leaks during the process in which the fixed pipe and the movable pipe slide with each other and the length of the assembled pipe changes. Is flowed without occurrence.

When the movable tube is pulled out from the inside of the fixed tube to the maximum, the movable tube sliding ring is engaged with the fixed tube sealing ring, and further withdrawal of the movable tube is prevented. When the movable tube is fully inserted into the fixed tube, the movable tube flange engages the fixed tube flange to prevent further insertion of the movable tube.

[0017] The assembled pipe of the present invention can reduce the distance between both ends of the assembled pipe by, for example, a telescopic boom.
When the inner tube enters the outer tube, the distance of the entire assembled tube is shortened, and conversely, the distance between the two ends of the assembled tube is increased, whereby the assembled tube is extended. The inner tube is pulled out from the inside of the outer tube for each of the plurality of tubes, and the distance of the entire assembled tube is extended.

The assembly tube of the present invention is arranged in parallel with a telescopic boom assembly, each pipe flange being connected to a corresponding part of the boom assembly, supported by the boom assembly, and provided with a boom assembly. It is expanded and contracted by the three-dimensional expansion and contraction motion, is extended by the boom, and is supported by the boom near the end of each tube constituting the elongated assembled tube, so that it depends on the weight of the tube or the weight of the fluid passing through the tube. In addition, the assembly tube is prevented from bending, and leakage of fluid caused by the bending is prevented.

The assembling pipe of the present invention uses a telescopic assembling pipe for supplying water or air to the spray nozzle of the snowfall machine, and changes the position of the spray nozzle in a horizontal direction or a vertical direction with respect to the base. In this case, the assembled pipe does not hang down due to expansion and contraction and can be easily expanded and contracted, and the relatively high-pressure fluid supply pipe does not approach the snow surface of the slope and does not cause any obstacle or danger.

[0020]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic partial cross-sectional plan view of a fluid assembly tube according to an embodiment of the present invention when it is reduced. FIG. 2 is a schematic side view when the assembly tube of the embodiment of the present invention is extended. 1 is a schematic sectional view showing the structure of a slide ring of the assembled pipe of the present invention, and FIG. 4 is a schematic sectional view taken along line AA in FIG.

FIGS. 1 to 4 show three concentric tubes inside a fixed tube S.
An example of a telescopic fluid assembly pipe 10 having a movable pipe, that is, a first pipe R ₁ , a second pipe R ₂ , and a third pipe R ₃ is shown. A first opening flange 14 having a first opening 16 is fixed to a first end of the fixed pipe S, and a fixed pipe flange 18 is fixed to a second end of the fixed pipe S. The fixed pipe flange 18 is supported via the bracket 17. The fixed pipe flange 18 is
Comprising a fixed conduit sealing ring 19 for sealing engagement slidably in the tube R ₁ outer circumference, a seal between the second end and the first Kangaishu surface fixed tube. As shown in detail in FIG. 3, a first pipe slide ring 22 is attached to a first end of a first pipe R ₁ located inside the fixed pipe, and a first flange 32 is attached to a second end of the first pipe R ₁ . Is nut 3
1 fixed. Thus, the fixed pipe S and the first pipe R
_During the period _1, the seal is doubly sealed by the fixed pipe sealing ring 19 and the first pipe sliding ring 22, and leakage of the fluid flowing through both pipes to the outside is prevented.

The first pipe sliding ring 22 is slidably and sealingly engaged with the inner peripheral surface of the fixed pipe S to seal between the inner peripheral face of the fixed pipe and the first end of the first pipe R ₁ . The first pipe R ₁ is first Kansurido ring 22 when pulled out to the maximum to prevent further withdrawal of the first pipe R ₁ engaged with the fixed conduit sealing ring 19 from inside the fixed tube. When the first pipe R ₁ is inserted maximally into the fixed pipe S, the first pipe flange 32 engages with the fixed pipe flange 18 to prevent further insertion of the first pipe R ₁ . In this manner, the first tube moving range of R ₁ is within a predetermined range relative to the fixed tube S, or fall first pipe R ₁ is disconnect from the fixed pipe S, the first pipe R ₁ enters into the fixed pipe S This prevents inconvenience that the next withdrawal becomes difficult.

The second Kansurido ring 42 is attached to the second pipe R ₂ a first end located within the first pipe R _1. The second pipe slide ring 42 is slidably and sealingly engaged with the inner circumference of the first pipe R ₁ to seal between the inner circumference of the first pipe and one end of the second pipe R ₂ . Second
The second pipe flange 44 to the second end of the tube R ₂ is secured by a nut 41, a second pipe flange 44, the second pipe sealing ring 45 which sealingly engages slidably with the third pipe R ₃ peripheral surface comprising sealing a second pipe R ₂ the second end between the third pipe R ₃ outer peripheral surface.
Third Kansurido ring 46 is secured to the third pipe R ₃ a first end located in the second pipe R _2. The third pipe sliding ring 46 is
A seal between the second pipe circumference and the third tube first end engaged slidably sealing engagement in inner tube R ₂ circumference.

Movable pipe flange 24 having second opening 26
And a socket 27 which communicates with the second opening 26 is provided in the third pipe R ₃ second end. When the third pipe R ₃ is pulled out from the inside of the second pipe R ₂ to the maximum, the third pipe slide ring 46 is moved to the second
The movable pipe flange 24 engages with the third pipe flange 44 when the third pipe R ₃ is fully inserted into the second pipe R ₂ when the third pipe R ₃ is fully inserted into the second pipe R _2. Engage to prevent further insertion of the third tube. The first pipe flange 32 includes, for example, a connecting member 21 such as a bolt for connecting a corresponding portion of a boom assembly described later and the first flange, and the second pipe flange 44 and the socket 27 include the same connecting member 23, 25 are provided.

When the number of the movable tubes is one, the configuration of the fixed tube S and the first end of the movable tube R in the fixed tube S is the same as in FIGS. , The second of the third tubes of FIGS.
The same configuration as the end, that is, a configuration in which the movable pipe flange 24 and the second opening 26 are provided.

Also, the movable tube has more than three concentric tubes,
That is, the first pipe R ₁ , the second pipe R ₁ ,
Pipe R ₂ ... In the case where the pipe is composed of the ( _n−1 ) -th pipe R _n−1 and the n-th pipe (n ≧ 3), the configuration of the fixed pipe S, the first pipe R ₁ and the second pipe R ₂ The same as FIGS. 1 to 3, but the innermost
Tube R _n, and the n-1 pipe R _n-1 of the outer is substantially similar to the second tube and the third tube configuration for Figure 1-4. That is, the (n-1) _-th pipe is connected to the second end of the (n-1) -th pipe R _n-1 on the second opening side.
The pipe flange 44 is fixed, and the (n-1) th pipe flange 44 is fixed.
Is the sealing engagement slidably to the n pipes R _n outer peripheral surface n-
The one-pipe sealing ring 45 is provided to seal between the second end of the ( _{n-1) -th} pipe R _n-1 and the outer peripheral surface of the n-th pipe R _n . An n-th pipe slide ring 46 is fixed to a first end of the n-th pipe R _n located in the _n-th pipe R _n-1 .

The n-th tube sliding ring 46 is provided with an (n-1) -th tube R
_A seal is slidably engaged with the inner peripheral surface of the n-1 pipe to seal between the inner peripheral surface of the n-1th pipe and the first end of the n-th pipe. A movable pipe flange 24 and a fluid outlet 26 are provided at the second end of the _n- th pipe Rn. When the n-th tube is pulled out from the (n-1) -th tube to the maximum, the n-th tube
The tube sliding ring 46 engages the (n-1) th tube sealing ring 45 to stop further withdrawal of the nth tube, and the nth tube is connected to the (n-th) tube.
When fully inserted into one tube, the movable tube flange 24 engages the (n-1) th tube flange 44 to prevent further insertion of the nth tube.

FIG. 3 is an illustrative sectional view showing the movable pipe sliding ring 22 and the second pipe sliding ring 42 in an enlarged manner. FIG.
As shown in FIG.
The combination of the packing 21 and the sliding ring 23
By providing, high pressure water of about 20 kg / cm ² ,
Fluid such as high-pressure air can be flowed without substantially leaking.

FIG. 5 is a schematic side view of a snowfall machine to which the assembled pipe of the present invention is applied, and FIG. 6 is a plan view of the snowfall machine of FIG. As shown in FIG. 5, the expandable and contractible fluid assembling pipe 10 has booms (borders) B ₀ , B ₁ , B ₄ ,
Comprises a B _2, B _3, are arranged in parallel movable boom boom assembly B box-boom type crane to stretch the telescopic. As shown in FIG. 6, a pair of assembly pipes 10 are arranged on both sides of the boom assembly B, and one of the assembly pipes supplies high-pressure water to the extension portions 61, 61 'of the boom assembly. Used to feed 66,
The other assembly tube is used to supply high pressure air to the snowfall nozzle 66.

The snowfall nozzle 66 is provided with an extension 61, 61 '.
It is mounted rotatably at an angle D about a vertical axis via a turntable 62 with a small motor above. Angle D
Is, for example, 120 degrees. Also, the snowfall nozzle 66
Is, for example, around a horizontal axis, as shown in FIG.
It is mounted to be able to swing about 90 degrees from horizontal to downward. The turntable 62 can be turned at an arbitrary angle by a limit switch (not shown).

As is apparent from FIG.
The fixed tube S in is coupled to the fixed boom B ₀ boom assembly support, the socket 27 of the assembly tube is supported while being connected to the distal end of the boom B ₃ boom assembly, with the expansion and contraction of the boom The expansion and contraction of the assembly pipe 10 is performed. Assembly pipe 1
The third pipes R ₃ and R ₃ of 0 and 10 are hoses 64 and 6 respectively.
4 and is connected to the snowfall nozzle 66 to supply high-pressure water and high-pressure air to the snowfall nozzle 66.

As shown in FIG. 5, the base of the boom assembly B is rotatably supported around a horizontal support shaft (not shown) disposed on the upper part of the vertical gantry 54, and a predetermined distance from the horizontal support shaft. the lifting device 55 portion of the fixed boom B ₀ is raised or lowered by the hydraulic motor, the height from the ground of snow nozzles 66 disposed at the distal end of the boom B ₃ boom assembly B is changed. The vertical mount 54 is supported by a swivel device 53 provided thereunder, and is rotated by the swivel device 53 around a vertical axis.
For example, it can be turned by 120 degrees. Swivel device 53
Is fixed to the ground via a support column 51, and a power room including a power control panel is disposed adjacent to and below the turning device.

The telescopic boom assembly B and the vertical stand 54 are connected by a horizontal support shaft to form an inverted L-shape as shown in FIG. The turning device can be turned over the entire circumference by a transmission mechanism such as a gear.
A code reel 56 is arranged on the vertical mount 54 above the back of the boom assembly B, and pays out or winds a power supply cord extending from the mount 54 to the snowfall nozzle 66 as the boom assembly B expands and contracts. To be. With this configuration, it is possible to prevent the power supply cord from sagging and prevent damage and danger.

According to the snowfall machine shown in FIGS. 5 and 6, the position of the snowfall nozzle is determined from the fixed point of the snowfall machine, for example, from the support 51.
It can be moved to any position in the space in all directions from 2 m to 15 m, and the snowfall work range can be widened.
In addition, the boom assembly is extended, and the height of the snowfall nozzle 66 at the tip of the boom assembly from the ground is increased by the lifting device 55, and a low outside air temperature is used for snowmaking from a high position, thereby improving the snow quality. Can be improved.

[0035]

According to the assembled pipe of the present invention, the fixed pipe flange is provided with a fixed pipe sealing ring which is slidably and sealingly engaged with the outer peripheral face of the movable pipe to provide a connection between the second end of the fixed pipe and the outer peripheral face of the movable pipe. A movable tube sliding ring is fixed to the first end of the movable tube that is sealed inside the fixed tube, and the movable tube sliding ring is slidably and sealingly engaged with the inner peripheral surface of the fixed tube to be in contact with the inner peripheral surface of the fixed tube. The space between the movable tube first ends is sealed. Therefore, the fixed tube and the movable tube are sealed in two places even when they are slid with each other, so that the relatively high-pressure fluid in the assembly tube does not leak from the ends of the fixed tube and the movable tube.

In the assembled tube according to the present invention, when the movable tube is pulled out from the inside of the fixed tube to the maximum, the movable tube sliding ring is engaged with the fixed tube sealing ring, and further drawing of the movable tube is prevented. . When the movable tube is fully inserted into the fixed tube, the movable tube flange engages the fixed tube flange to prevent further insertion of the movable tube. Therefore, it is possible to prevent the movable tube from dropping out of the fixed tube, or to prevent the movable tube from entering the fixed tube too much to make the next extension difficult.

The assembled pipe of the present invention can reduce the distance between both ends of the assembled pipe by, for example, a telescopic boom.
A plurality of tubes constituting the assembled tube are each inserted into the outer tube so that the inner tube enters the outer tube, thereby shortening the distance of the entire assembled tube. In this case, each of the tubes is too far into the outer tube due to the flange of each tube. Nothing happens. In addition, by extending the distance between both ends of the assembled pipe, for example, by using a boom assembly, a plurality of pipes constituting the assembled pipe are respectively pulled out of the inner pipe from the inside of the outer pipe. ,
In either case, the sealing ring and the sliding ring of each tube are engaged with each other, so that they do not come out of each other, and the distance of the entire pipe stand is extended.

The assembly tube of the present invention is arranged in parallel with the telescopic boom assembly, each pipe flange being connected to a corresponding part of the boom assembly, supported by the boom assembly, and having the boom assembly. It is expanded and contracted by the three-dimensional expansion and contraction motion, is extended by the boom, and is supported by the boom near the end of each tube constituting the elongated assembled tube, so that it depends on the weight of the tube or the weight of the fluid passing through the tube. In addition, the assembly tube is prevented from bending, and leakage of fluid caused by the bending is prevented.

The assembling tube of the present invention uses the extensible assembling tube for fluid to supply water or air to the spray nozzle of the snowfall machine, and changes the position of the spray nozzle horizontally or vertically with respect to the gantry. In this case, the assembled pipe does not hang down due to expansion and contraction and can be easily expanded and contracted, and the relatively high-pressure fluid supply pipe does not approach the snow surface of the slope and does not cause any obstacle or danger.

[Brief description of the drawings]

FIG. 1 is a schematic partial cross-sectional plan view when an assembled pipe according to an embodiment of the present invention is reduced.

FIG. 2 is a schematic side view of the embodiment of the present invention when the assembled pipe is extended.

FIG. 3 is an illustrative sectional view showing the structure of a slide ring of the assembled pipe of the present invention.

FIG. 4 is an illustrative sectional view taken along line AA of FIG. 1;

FIG. 5 is an illustrative side view of a snowfall machine to which the assembled pipe of the present invention is applied.

FIG. 6 is a plan view of the snowfall machine of FIG. 5;

[Explanation of symbols]

10: assembled pipe, 12: inner peripheral surface of fixed pipe, 16: first opening,
14: first opening flange, 17: bracket, 18: fixed pipe flange, 19: fixed pipe sealing ring, 21: U-packing, 21, 23, 25: connecting member, 22: movable pipe sliding ring, 23: sliding Moving ring, 24: movable pipe flange,
26: second opening, 27: socket, 31: nut, 3
2: First pipe flange, 39: First pipe sealing ring, 42:
Second pipe sliding ring, 44: second pipe flange (n-1 pipe flange), 45: second pipe sealing ring (n-1 pipe sealing ring), 46: third pipe sliding ring (nth pipe Pipe sliding ring), 51: support, 53: swivel, 54: mount, 5
5: lifting device, 56: cord reel, 61, 6
1 ': extension, 62: turntable, 64: hose, 66: snowfall nozzle, B: boom assembly, D: angle,
R: movable tube, R ₁ : first tube, R ₂ : second tube, R _n-1 : _n-th tube
-1 tube, R _n : n-th tube, S: fixed tube.

Claims (6)

[Claims] 1. A fixed tube, wherein a part of a movable tube is arranged concentrically inside the fixed tube, a first opening is provided at a first end of the fixed tube, and a second opening of the fixed tube is provided.
A fixed pipe flange is fixed to the end, the fixed pipe flange includes a fixed pipe sealing ring slidably and sealingly engaged with the movable pipe outer peripheral surface, and seals between the fixed pipe second end and the movable pipe outer peripheral face, A movable tube sliding ring is fixed to a first end of the movable tube located inside the fixed tube, and the movable tube sliding ring is slidably and sealingly engaged with an inner peripheral surface of the fixed tube and is fixed to the inner peripheral surface of the fixed tube and the movable tube. A seal is provided between one end and a movable pipe flange and a second opening are provided at a second end of the movable pipe, and the movable pipe sliding ring is engaged with the fixed pipe sealing ring when the movable pipe is pulled out from the inside of the fixed pipe to the maximum. When the movable tube is fully inserted into the fixed tube, the movable tube flange engages with the fixed tube flange to prevent the movable tube from being further inserted, and Flow through the first opening, the inside of the fixed tube, the inside of the movable tube, and the second opening. Assembling pipe extendable fluid to symptoms. 2. The assembling tube according to claim 1, wherein the movable tubes are concentrically arranged in order from the outside to the inside, the first tube, the second tube,... Tube, n-th tube (n ≧
The stationary pipe sealing ring is slidably and sealingly engaged with the outer peripheral surface of the first pipe to seal between the second end of the fixed pipe and the outer peripheral face of the first pipe, and the movable pipe sliding ring is provided. Is disposed at the first end of the first tube located inside the fixed tube, slidably and sealingly engaged with the inner peripheral surface of the fixed tube to seal between the inner peripheral surface of the fixed tube and the first end of the first tube, A first pipe flange is secured to the second end of the first pipe, and the first pipe flange includes a first pipe sealing ring slidably and sealingly engaged with the outer peripheral surface of the second pipe, and the first pipe flange is fixed to the second end of the first pipe. A seal is provided between the outer peripheral surfaces of the two tubes, and when the first tube is pulled out from the inside of the fixed tube to the maximum, the movable tube sliding ring engages with the fixed tube sealing ring to prevent further withdrawal of the first tube. The first pipe flange engages the fixed pipe flange to prevent further insertion of the first pipe when the first pipe is fully inserted into the fixed pipe, and the first pipe flange is positioned inside the first pipe. A second pipe slide ring is disposed at the first end of the second pipe to be slidably and sealingly engaged with the inner circumference of the first pipe to seal between the inner circumference of the first pipe and the first end of the second pipe. An n-1st pipe flange is fixed to the second end of the (n-1) th pipe on the second opening side, and the (n-1) th pipe flange is slidably and sealingly engaged with the outer peripheral surface of the nth pipe. A seal ring is provided between the second end of the (n-1) th pipe and the outer peripheral surface of the (n) th pipe, and an n-th pipe slide ring is fixed to the first end of the (n-1) th pipe located in the (n-1) th pipe. The n-th tube sliding ring is slidably and sealingly engaged with the (n-1) -th tube inner peripheral surface to seal between the (n-1) -th tube inner peripheral surface and the first end of the n-th tube. The flange and the fluid outlet are provided at the second end of the n-th tube, and the n-th tube sliding ring engages with the (n-1) -th tube sealing ring when the n-th tube is pulled out from the inside of the (n-1) -th tube to the maximum. And stop further withdrawal of the nth tube Wherein the movable pipe flange engages with the (n-1) th pipe flange when the nth pipe is inserted into the (n-1) th pipe to a maximum extent, thereby preventing further insertion of the nth pipe. Assembled pipe for possible fluids. 3. The assembly pipe according to claim 1, wherein each slide ring has a structure in which a packing having a U-shaped cross section is accommodated in each ring groove. 4. The telescopic fluid assembly tube according to claim 1, wherein the telescopic fluid assembly tube is arranged in parallel with the telescopic boom assembly, and the movable pipe flange corresponds to the boom assembly. A telescopic fluid assembly tube coupled to a portion, the movable tube flange being supported by the boom assembly and being moved by movement of a corresponding portion of the boom assembly. 5. A telescopic fluid assembly pipe according to any one of claims 1 to 3, wherein one set of each of said telescopic fluid boom assemblies is arranged in parallel on both sides of said telescopic boom assembly. A movable pipe flange connected to a corresponding part of the boom assembly and moved by movement of the corresponding part of the boom assembly;
A snowfall machine wherein high-pressure water and high-pressure air are supplied to a spray nozzle for artificial snow production arranged at a tip of a boom assembly through a pair of assembly pipes. 6. The snowfall machine according to claim 5, wherein the base of the boom assembly is supported by a horizontal support shaft disposed on a support, and the base of the boom assembly is arranged around the support shaft. The height of the tip of the boom assembly can be changed by rotating the boom assembly, and the horizontal position of the tip of the boom assembly can be changed by rotating the support base around a vertical axis. The snowfall machine according to claim 1, wherein a predetermined angle with respect to a longitudinal direction of the boom assembly can be changed in a horizontal plane and a vertical plane.