JPH112367A - Magnetic hoisting accessory for pipe line and pipe line suspension supporting method using this magnetic hoisting accessory - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress use of a yoke and expensive permanent magnet to a necessary minimum amount, suppress a cost of manufacture, also make powerful magnetic attraction possible to a fixed object having ferromagnetism, by specifying relatively optimum dimensional ratio of the permanent magnet to the yoke in a sandwich type magnetic circuit provided in a magnetic hoisting accessory for a pipe line. SOLUTION: A magnetic hoisting accessory 35 for a pipe line, attracted to a fixed object having ferromagnetism to suspension support the pipe line, comprises a magnetic attracting member 20 grasping both magnetic pole sides of permanent magnets 21a to 21d by yokes 22a to 22e also having a sandwich type magnetic circuit constituted so as to relatively move the permanent magnet and the yoke and a hoisting member additionally provided in this magnetic attracting member 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a magnetic attraction force of a permanent magnet to make various pipes, wirings and the like (hereinafter referred to as pipes) typified by an air conditioning duct or the like ferromagnetic. TECHNICAL FIELD The present invention relates to a magnetic suspension for a pipeline suspended and supported on a fixed object such as a deck plate, a steel frame for a beam, and a ceiling iron plate, and a method for suspending and supporting a pipeline using the same.

[0002]

2. Description of the Related Art According to Japanese Unexamined Patent Publication No. 8-261368, a suspended object is suspended from a fixed object by using a suspension fitting having a sandwich-type magnetic circuit shown in the sectional view of FIG. 11 and the perspective view of FIG. It is disclosed to support lowering.

FIG. 11 shows a side yoke 3 of a suspension fitting 30.
An adhesive is applied to the upper surfaces of the adhesive bent pieces 32b and 33b, and is fixed to the ceiling iron plate 26.
Thereafter, a suspension bolt (not shown) is screwed to the nut 36 of the suspension bolt holder 37 of the suspension fitting 30, and an air conditioning duct or the like can be gripped by the suspension bolt.

FIG. 12 shows a suspension fitting 40 provided with a sandwich type magnetic circuit in which three magnetic circuits are formed using a square magnet, and has magnetic poles of opposite polarities magnetized in the thickness direction. Two center yokes 44 are sandwiched between the three rectangular plate magnets 41 juxtaposed to face each other, and side yokes 42 and 43 having an L-shaped cross section are brought into contact with the square plate magnets 41 at both ends. , A tapping screw 45, and a pin shaft 48 on the side yokes 42, 43.
And a suspension bolt holder 4 having a nut 46 fitted thereinto.
7 is attached. Reference numerals 42b and 43b denote bonding surfaces to which an adhesive is applied.

[0005]

However, the above-mentioned conventional hanging metal fitting is manufactured so as to be fixed to a flat portion of the ceiling iron plate 26. For example, as shown in FIG.
When fixing the hanging metal over the uneven surface of 6 ′, the total length (Lt) of the hanging metal 30 on the fixed side and the length of the concave portion (Lp1) or the length of the convex portion (Lp2) of the ceiling iron plate 26 ′ are:
If Lt <Lp1 or Lp2 ≧ Lt is not satisfied, the entire attracting surface of the hanging bracket 30 cannot be in close contact with the ceiling iron plate 26 ′, so that 100% of the magnetic attracting force inherent to the hanging bracket 30 cannot be exerted.

[0006] Next, in the above-mentioned conventional suspension fittings 30, 40, the relative optimum dimensional ratio between the permanent magnet and the center yoke and the side yoke that sandwich the permanent magnet is unknown, and it is necessary to use expensive permanent magnets. It has not been easy to manufacture a hanging bracket having a large magnetic attraction force with good reproducibility and low cost while keeping the amount small. This clearly indicates a lack of study on a sandwich-type magnetic circuit that can use the magnetic flux generated from the permanent magnet in the above-mentioned conventional hanging metal as a magnetic attraction force with high efficiency.

Next, the magnetic attraction surfaces 42a, 42c, 42 are provided on the side yokes 42, 43 of the above-mentioned conventional hanging fitting 40.
Although punched portions 42d and 43d for magnetically separating c, 43a, 43c and 43c from the bonding surfaces 42b and 43b are provided, the formation of the punched portions requires, for example, a punching process by a press, and furthermore, the bonding surface 42b , 43b requires grinding and the like, which increases the manufacturing cost of the side yoke, which is not preferable. In addition, the above-described conventional suspension fitting 30
The upper surfaces of the adhesive surfaces 32b and 33b have concave portions which are recessed from the magnetic attracting surface by the thickness of the gap in order to apply the adhesive, so that the magnetic attracting force to the ceiling iron plate (not shown) decreases. Problem.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a magnetic suspension for a pipeline which can be strongly magnetically attracted without being restricted by the unevenness of the surface of a fixed object having ferromagnetism. Another object of the present invention is to specify the relative optimal dimensional ratio between the permanent magnet and the yoke of the sandwich-type magnetic circuit provided in the magnetic suspension device for pipelines, thereby necessitating the use of the yoke and the expensive permanent magnet. An object of the present invention is to provide a magnetic suspension having a strong magnetic attraction force while suppressing the production cost by minimizing the amount. Another object of the present invention is to provide a method for suspending and supporting a pipeline on a fixed object having ferromagnetism using a magnetic suspension for a pipeline, wherein the magnetic suspension for a pipeline is It is an object of the present invention to provide a method of suspending and supporting a pipeline in which other fixing means can be used together without weakening the inherent magnetic attraction force.

[0009]

According to the present invention, there is provided a magnetic suspending device for a pipeline, which attracts a ferromagnetic fixed object and suspends and supports the pipeline. A magnetic attraction member having a sandwich-type magnetic circuit configured to sandwich both magnetic pole sides of the permanent magnet with the yoke and to relatively move the permanent magnet and the yoke,
And a suspension member attached to the magnetic attraction member. According to the present invention, since the predetermined permanent magnet and the yoke are relatively movable in the magnetic attraction direction in the sandwich type magnetic circuit, the surface of the fixed object having ferromagnetism is an uneven flat or curved surface. Even so, the suction surface of the magnetic suspension can be brought into close contact with the uneven surface, and the magnetic suspension can be attracted by the inherent magnetic suction force of the magnetic suspension.

Further, the magnetic suspension device for a pipeline according to the present invention is a magnetic suspension device for a pipeline for suspending and supporting a pipeline by adsorbing to a fixed object having ferromagnetism. The magnetic poles are arranged to face each other via a center yoke, side yokes are juxtaposed on the magnetic pole sides of the permanent magnets arranged at both ends of the plurality of permanent magnets, and the lengths (Lm ), The length of the center yoke (Lyc), and the length of the side yoke (Lys) are L
It is characterized by comprising a sandwich type magnetic circuit configured so that m ≧ Lyc and Lm ≧ Lys. In the present invention, the thickness (tc) of the center yoke and the thickness (ts) of the side yoke, which are perpendicular to the magnetic attraction direction, are further provided.
And the saturation magnetic flux densities (Bs) of the center yoke and the side yokes, the residual magnetic flux densities (Br) of the plurality of permanent magnets, and the lengths (Lm) in the magnetic attraction direction are represented by ts ≦ (Lm
× Br) / Bs (tc / ts) = 1.
By satisfying the relationship of 6 to 2.4, it is possible to construct a sandwich type magnetic circuit in which leakage magnetic flux is suppressed to a very small value, and it is possible to reduce the necessity of using a yoke and expensive permanent magnets to a minimum necessary amount. The magnetic suspension having the above can be manufactured at low cost.

Further, according to the present invention, in a method for suspending and supporting a pipeline on a fixed object having ferromagnetism by using a magnetic suspension for a pipeline, two magnetic pole sides of a permanent magnet are yoke-connected. A separate holding / fixing member arranged to hold the magnetic suspension for a pipeline provided with the magnetic suspension for a pipeline having a sandwich type magnetic circuit sandwiched between the magnetic suspensions to the fixed object. Is fixed to the fixed object with a screw, and then the conduit is gripped by a suspending member attached to the magnetic suspending device for the conduit. ADVANTAGE OF THE INVENTION According to this invention, the holding | maintenance was carried out in the state which adsorb | sucked so that the separate holding | maintenance fixing member might be hold | maintained by the magnetic suspension for pipes using the magnetic flux leakage of the magnetic suspension for pipes. Since the fixing member and the fixed object are fastened with the screw, the fixing member can be firmly fixed to the fixed object while maintaining the magnetic attraction force inherent to the magnetic suspension for pipeline.

The present invention also provides a method for suspending and supporting a pipeline on a ferromagnetic fixed object using a magnetic suspension for a pipeline, wherein both magnetic pole sides of the permanent magnet are yoke. A separate holding / fixing member arranged to hold the magnetic suspension for a pipeline provided with the magnetic suspension for a pipeline having a sandwich type magnetic circuit sandwiched between the magnetic suspensions to the fixed object. Is welded to the fixed object, and then the conduit is gripped by a suspending member attached to the magnetic suspension device for the conduit. ADVANTAGE OF THE INVENTION According to this invention, the holding | maintenance was carried out in the state which adsorb | sucked so that the separate holding | maintenance fixing member might be hold | maintained by the magnetic suspension for pipes using the magnetic flux leakage of the magnetic suspension for pipes. Since the fixed member is welded to the fixed object, the permanent magnets arranged in the sandwich type magnetic circuit are prevented from being demagnetized due to the heat generated by the welding, and retain the magnetic attraction inherent in the magnetic suspension for pipes. It can be firmly fixed to the fixed object as it is.

The present invention also provides a method for suspending and supporting a pipeline on a fixed object having ferromagnet by using a magnetic suspension for a pipeline. A separate holding / fixing member arranged to hold the magnetic suspension for a pipeline provided with the magnetic suspension for a pipeline having a sandwich type magnetic circuit sandwiched between the magnetic suspensions to the fixed object. Is adhered to the fixed object, and then the pipeline is gripped by a suspending member attached to the magnetic suspension device for the pipeline. ADVANTAGE OF THE INVENTION According to this invention, the holding | maintenance was carried out in the state which adsorb | sucked so that the separate holding | maintenance fixing member might be hold | maintained by the magnetic suspension for pipes using the magnetic flux leakage of the magnetic suspension for pipes. Since the fixing member and the fixed object are adhered to each other, the fixing member can be firmly fixed to the fixed object while maintaining the magnetic attraction force inherent to the magnetic suspension device for conduit.

As the permanent magnet used in the present invention, a known magnet, such as a ferrite magnet, a rare earth magnet, an alnico magnet, or a bonded magnet, which can generate a magnetic attraction force when a sandwich type magnetic circuit is formed, can be appropriately used. Also,
As the yoke used in the present invention, a known soft magnetic material that can pass an effective magnetic flux serving as a magnetic attraction force when a sandwich type magnetic circuit is formed can be used, and for example, an iron-based soft magnetic alloy is preferably used. .

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below, but the present invention is not limited by the following embodiments.

FIG. 1 is a perspective view of an essential part showing one embodiment of the magnetic suspension of the present invention. FIG. 2 shows the through bolt 7 of FIG.
FIG. 4 shows a cross-sectional view of a main part along the line A, and shows a state in which a duct is suspended by being magnetically attracted to a flat portion of the deck plate 10 having ferromagnetism. 1 and 2, 1
a, 1b, and 1c are rectangular plate-shaped permanent magnets (for example, an anisotropic sintered ferrite magnet manufactured by Hitachi Metals, Ltd .: YBM-3).
etc. ). Reference numerals 2a and 2d denote side yokes having an L-shaped cross section, and reference numerals 2b and 2c denote rectangular plate-shaped center yokes, each of which is formed of an iron-based soft magnetic alloy (for example, SS400 or the like). The N pole side of the permanent magnet 1a is on the left side of the center yoke 2b, the S pole side of the permanent magnet 1b is on the left side of the center yoke 2c, and the N pole side of the permanent magnet 1c is on the left side of the side yoke 2d. (For example, an epoxy resin adhesive). The right side surface of the side yoke 2a and the S pole surface of the permanent magnet 1a, the right side surface of the center yoke 2b and the N pole surface of the permanent magnet 1b, the right side surface of the center yoke 2c and the S pole surface of the permanent magnet 1c are respectively magnetic. There is provided a magnetic attraction member 11 which forms a sandwich type magnetic circuit which is brought into contact only with the attraction force and is relatively movable in the magnetic attraction direction indicated by the arrow. The attracting surfaces 2aa, 2bb, 2cc, 2dd of the magnetic attracting member 11 form the same plane. In addition, a gap 8 is formed on each of the upper surfaces of the permanent magnets 1a, 1b, and 1c to suppress short-circuit magnetic flux (Φs),
An impact when magnetically attracting the deck plate 10 is not directly applied to each permanent magnet. Further, the through bolt 7 is sequentially provided with an end through hole 4 of a holder 5 which is a suspension member having a substantially U-shaped cross section having a screw hole 6 at the center and slide through holes 3a, 3b, 3c, 3d of each yoke. And holder 5
After passing through the end through hole 4 ′ on the opposite side, it is fastened with a nut 14. At the time of this fastening, each slide through hole 3
Using the spaces a, 3b, 3c, and 3d, the positions of the attraction surfaces can be adjusted so that the magnetic attraction surface of each yoke is in close contact with the deck plate 10 surface. An upper portion of a suspension bolt (not shown) having a structure capable of gripping an air-conditioning duct or the like is screwed into the screw hole 6 of the magnetic suspension device 15 of the present invention having the above-described configuration to suspend the pipeline. It is designed to support lowering.

FIG. 3 is a sectional view showing a main part of another embodiment of the magnetic suspension according to the present invention. The magnetic suspension is magnetically attracted over the uneven surface of the deck plate 24 having ferromagnetism, and the pipe is suspended and supported. Is shown. In FIG. 3, 21a, 21
b, 21c and 21d are rectangular plate-shaped permanent magnets (for example,
Nd-Fe-B-based anisotropic sintered magnet manufactured by Hitachi Metals, Ltd .: HS-37BH or the like. ). Reference numerals 22a and 22e denote side yokes having an L-shaped cross section, and reference numerals 22b, 22c and 22d denote rectangular plate-shaped center yokes, each of which is formed of an iron-based soft magnetic alloy (for example, SS41 or the like). The S pole side of the permanent magnet 21a is on the left side of the center yoke 22b, and the N pole side of the permanent magnet 21b is the center yoke 2
The adhesive 13 (for example, the S pole side of the permanent magnet 21c is attached to the left side of the center yoke 22d, and the N pole side of the permanent magnet 21d is attached to the left side of the side yoke 22e.
Acrylic resin adhesive, etc. ). Also,
The right side surface of the side yoke 22a and the N pole surface of the permanent magnet 21a, the right side surface of the center yoke 22b and the S pole surface of the permanent magnet 21b, the right side surface of the center yoke 22c and the permanent magnet 21
A sandwich type magnetic circuit is formed in which the N-pole surface of c, the right side surface of the center yoke 22d and the S-pole surface of the permanent magnet 21d are brought into contact only by their respective magnetic attraction forces, and are relatively movable in the magnetic attraction direction indicated by the arrow. Thus, the magnetic attraction member 20 is configured. The function of the gap 28 formed on the upper surface of each permanent magnet is the same as that of the gap 8 described above. Further, the through bolts 27 are sequentially provided with an end through hole 16 of the holder 25, which is a suspension member having a substantially U-shaped cross section having a screw hole 51 at the center, and sliding through holes 23a, 23b, 23c, 23d of each yoke. , 23e and the opposite end of the holder 25 through the through hole 16 'at the opposite side, and then fastened with a nut 19. The operation of each slide through-hole is the same as that of 3a, 3b, 3c and 3d. In the magnetic hanging device 35 having this configuration, the suction surfaces of the yokes are in close contact with the concave surface 24a and the convex surface 24b of the deck plate 24, and are strongly magnetically attracted. Screw hole 5 for magnetic suspension 35
An upper part of a suspending member (not shown) having a structure capable of gripping a conduit (not shown) is screwed to 1 so as to suspend and support the conduit.

FIG. 4 is a cross-sectional view of an essential part of FIG. 4, in which the magnetic suspension 35 is magnetically attracted to a ferromagnetic deck plate and is fastened with screws via holding and fixing members.
In FIG. 4, after screw holes 49, 49 are drilled in appropriate places (for example, the projections 24b ') of the deck plate 24', the magnetic suspension 35 is attached to the deck plate 24 'between the holes 49, 49. 'Adsorb to the uneven surface. Next, the holding and fixing member 50 having the opening 17 in the center bottom portion and capable of supporting the magnetic hanging device 35 from below is disposed. At this time, the holder protruding portion 25b is arranged so as to protrude from the opening 17 of the holding and fixing member 50. Here, when the holding and fixing member 50 is formed of a ferromagnetic material (for example, S45C or the like), the holding and fixing member 50 follows the contour of the magnetic hanging member 35 due to the leakage magnetic flux of the magnetic hanging member 35 in the illustrated state. When the holding and fixing member 50 is fixed to the deck plate 24 ′ with the screws 18, it is not necessary to manually support the holding and fixing member 50 so that the holding and fixing member 50 does not drop, and the mounting operation is easy. Thereafter, the through holes 52, 52 provided at both upper ends of the holding and fixing member 50 and the screw holes 4 are formed.
The magnetic suspension 35 is fixed to the deck plate 2 by fastening with the screws 18 and 18 with the positions of 9 and 49 aligned.
Indirectly fixed to 4 '. Since the magnetic attraction member 20 is not provided with a screw fastening portion that causes a decrease in the magnetic attraction force, a high magnetic attraction force can be maintained.

FIG. 7A shows the holding and fixing member 50 shown in FIG.
FIG. 11 is a view as viewed from below, and a flat portion 56 abutted on the deck plate 24 ′ by the screwed bolt 18, a portion 69 to be held along the outer peripheral portion contour of the magnetic hanging device 35,
A through hole 52 through which the screw bolt 18 is passed;
And By using the opening 17, a grasping portion of a conduit (not shown) (for example, a linear body such as a stainless steel wire or a belt-like body formed of a reinforcing fiber) can be passed therethrough. Can be easily suspended and supported directly below. FIG. 7B is a sectional view of a main part of the holding and fixing member 50.

FIG. 5 is a sectional view of a main part of FIG. 5, in which the magnetic suspension 35 is magnetically attracted and fixed by welding over the uneven surface of the deck plate 24 '.
5, the same components as those in FIG. 4 are denoted by the same reference numerals. In the procedure for suspending and supporting the pipeline shown in FIG. 5, first, the magnetic suspension 35 is sucked over the uneven surface of the deck plate 24 '. Next, the holding and fixing member 50 is arranged so as to hold the magnetic hanging device 35. Then, the magnetic suspension 35 is indirectly attached to the deck plate 24 'by welding the upper surface of the holding and fixing member 50 in close contact with the deck plate 24'.
Fix to 4 '. According to this fixing procedure, there is an effect that the welding position is far from the magnetic hanging tool 35 and heat during welding is hardly transmitted to each permanent magnet, so that thermal demagnetization can be suppressed.

FIG. 6 is a cross-sectional view of an essential part of FIG. 6, in which the magnetic suspension 35 is magnetically attracted and fixed by bonding over the uneven surface of the deck plate 24 '.
6, the same components as those in FIG. 4 are denoted by the same reference numerals. In the procedure for suspending and supporting the pipeline shown in FIG. 6, first, the magnetic suspension 35 is sucked over the uneven surface of the deck plate 24 '. Next, the adhesive 57 (for example, an epoxy resin-based adhesive or the like) is applied to the upper surface 16a of the holding / fixing member 50, and then the holding / fixing member 50 is disposed so as to hold the magnetic hanging member 35. Then, the magnetic suspension 35 is indirectly attached to the deck plate 24 by pressing the adhesive applied surface.
Adhesively fixed. Since the magnetic suspension device 35 does not have an adhesive surface unlike a conventional suspension device, the magnetic suspension device 35 can exhibit its original magnetic attraction force and can be strongly magnetically attached to the deck plate 24 '.

Next, FIG. 8 is a perspective view of a main part of a magnetic suspension 60 having a sandwich type magnetic circuit using a permanent magnet and a yoke efficiently while securing a strong magnetic attraction force. FIG. 9 is a sectional view of a main part of FIG. 8 and 9, 61a, 61b, 61c, 6
1d is a rectangular plate-shaped permanent magnet (for example, Hitachi Metals, Ltd.)
Anisotropic sintered ferrite magnet: YBM-5BB. )
It is. Reference numerals 62a and 62e denote side yokes having an L-shaped cross section, and 62b, 62c and 62d denote center yokes in the form of rectangular plates, all of which are made of an iron-based soft magnetic alloy (for example, SPC).
C etc. ). Then, both sides of each permanent magnet and one or both sides of each yoke are adhered with an adhesive (for example, an epoxy resin-based adhesive or the like) to form a magnetic attraction member 55 forming a sandwich type magnetic circuit. ing. Magnetic attraction surfaces 62aa, 62bb, 62c of magnetic attraction member 55
c, 62dd, and 62ee form the same plane and form a gap 68 between the permanent magnets and the upper surface of each permanent magnet to suppress short-circuit magnetic flux so that the impact during magnetic attraction is not directly applied to the permanent magnets. . Pin shafts 66, 66 are provided below the side yokes 62a, 62e, and support the holder 65 so as to be swingable in a direction perpendicular to the plane of the drawing. This holder 65
For example, an upper portion of a suspension bolt (not shown) having a structure capable of gripping an air conditioning duct or the like is screwed into the screw hole 67 so as to suspend and support the pipeline. In the magnetic suspension 60 configured as described above, the length (Lm) of each permanent magnet in the magnetic attraction direction, the length (Lyc) of the center yoke 62b, 62c, 62d in that direction, and the length of the side yokes 62a, 62e. The length (Lys) is L
When the configuration is such that m ≧ Lyc and Lm ≧ Lys, a sandwich type magnetic circuit having a strong magnetic attraction force can be formed, and the yoke and the expensive permanent magnet can be efficiently arranged, which is highly practical.

FIG. 10 is similar to FIGS. 8 and 9 except that the permanent magnets 61a to 61e are replaced by Nd-Fe-B manufactured by Hitachi Metals, Ltd.
-Based anisotropic sintered magnet: thickness 37m using HS37BH
m, both of which are made of SS400 side yoke 62
a, 62e thickness ts and center yokes 62b to 62b
The thickness tc of 2d is equally set to 6 mm, and Lyc =
The graph shows the relationship between the protrusion height h (mm) of the permanent magnet and the attraction force per unit length of the attraction surface when Lys = Ly and (Ly + h) to Lm. From FIG.
It can be seen that a high attraction force is obtained when Lm ≧ Ly.

FIG. 14 shows that Lm ≧ Lyc and Lm
Under the condition that ≧ Lys is satisfied, when ts ≦ (Lm × Br) / Bs, the thickness dimension ratio of the center yoke and the side yoke (tc / ts)
4 shows an example of data describing the relationship between the magnetic force and the suction force per unit length of the suction surface of the magnetic hanging device. From FIG. 14, when ts ≦ (Lm × Br) / Bs, tc
= 2ts, the highest adsorption force is obtained,
In consideration of manufacturing accuracy and practicality, tc = 1.6-2.
4 ts is a preferred range.

In the above embodiment, the case where the uneven surface of the deck plate is flat is described. However, it is needless to say that each surface may be a curved surface. That is, in the present invention, it is possible to appropriately set the shape and dimensions of the suction surface of the magnetic hanging device of the present invention so as to be able to adhere in accordance with the surface state of the fixed object having ferromagnetism. INDUSTRIAL APPLICABILITY The present invention is very useful for hanging and supporting applications for pipes for transporting various gases, liquids and powders, and various wirings. Further, in the above embodiment, the slide through holes are formed in each yoke and the through bolts are fastened. However, the through holes may be provided in any permanent magnet and / or yoke constituting the magnetic suspension of the present invention. Of course it is good.

[0026]

According to the present invention, the following excellent effects can be obtained. (1) It is possible to provide a magnetic suspension device for a pipeline capable of strongly attracting magnetic force without being restricted by the unevenness of the surface of a fixed object having ferromagnetism. (2) Since the relative optimum dimensional ratio between the permanent magnet and the yoke of the sandwich type magnetic circuit provided in the magnetic suspension device for pipelines has been specified, strong magnetic attraction to a fixed object having ferromagnetism is possible. In addition, an inexpensive magnetic suspension can be provided. (3) It is possible to provide a practical method of suspending and supporting a pipeline by using other fixing means while maintaining the magnetic attraction inherent in the magnetic suspension for a pipeline.

[Brief description of the drawings]

FIG. 1 is a perspective view of an essential part showing one embodiment of a magnetic suspension device for a pipeline according to the present invention.

FIG. 2 is a sectional view of a main part of FIG.

FIG. 3 is a cross-sectional view of a main part showing another embodiment of the magnetic suspension device for conduit of the present invention.

FIG. 4 is a cross-sectional view of an essential part showing an embodiment in which the magnetic suspension device for a pipeline of the present invention is indirectly fastened with screws.

FIG. 5 is a cross-sectional view of a main part showing an embodiment in which the magnetic hanging device for a pipeline of the present invention is indirectly welded.

FIG. 6 is a cross-sectional view of a main part showing an embodiment in which the magnetic hanging device for a pipeline of the present invention is indirectly bonded.

FIGS. 7A and 7B are a diagram (a) and a cross-sectional view (b) of a main part of the holding and fixing member as viewed from below.

FIG. 8 is a perspective view of an essential part showing still another embodiment of the magnetic suspension device for a pipeline according to the present invention.

FIG. 9 is a sectional view of a main part of FIG.

FIG. 10 is a diagram illustrating an example of a relationship between Lm, Lyc, and Lys and an attraction force.

FIG. 11 is a cross-sectional view showing a conventional hanging fitting.

FIG. 12 is a perspective view showing a conventional hanging fitting.

FIG. 13 is a cross-sectional view showing a state in which a conventional hanging fitting is sucked over an uneven surface.

FIG. 14 is a diagram illustrating an example of a relationship between (tc / ts) and an attraction force.

[Explanation of symbols]

1a, 1b, 1c, 21a, 21b, 21c, 21d,
61a, 61b, 61c, 61d permanent magnet, 2a, 2
b, 2c, 2d, 22a, 22b, 22c, 22d, 2
2e, 62a, 62b, 62c, 62d, 62e Yoke, 2aa, 2bb, 2cc, 2dd, 62aa, 62
bb, 62cc, 62dd, 62ee magnetic adsorption surface, 3
a, 3b, 3c, 3d, 23a, 23b, 23c, 23
d, 23e Slide holes, 4, 4 ', 16, 16'
Holder hole, 16a Adhesive coated surface, 17 opening, 30,
40 hanging brackets, 31, 41 permanent magnets, 32, 33,
34, 42, 43, 44 yokes, 45 tapping screws, 36, 46 nuts, 37, 47 hanging bolt holders, 38, 48 pin shafts, 50 holding and fixing members, 56
Fastening surface, 69 recess, 5, 25, 65 holder, 25b
Lower part of holder, 6, 51, 67 holes, 7, 27 bolts, 8, 9, 28, 29, 68 gaps, 10, 24,
24 ', 26, 26', 64 deck plates, 11,
20, 55 magnetic attraction member, 12, 13 adhesive, 14,
19 nuts, 15, 35, 60 magnetic suspension, 18
Screw, 24a, 24a 'concave portion, 24b, 24b' convex portion, 32b, 33b adhesive bent piece, 39, 59, 5
9 'concrete slab, 49, 52 holes, 53 welds, 57 adhesive layer, 66 pin shaft.

Claims (7)

[Claims] 1. A conduit-type magnetic suspending device for suspending and supporting a conduit by adsorbing to a fixed object having ferromagnetism, wherein both magnetic pole sides of a permanent magnet are sandwiched by a yoke, and the permanent magnet is A magnetic suspension device for a pipeline, comprising: a magnetic attraction member having a sandwich type magnetic circuit configured to move relative to a yoke; and a suspension member attached to the magnetic attraction member. 2. The magnetic suspension device for a pipeline according to claim 1, wherein the attraction surface of the magnetic attraction member forms an uneven surface and is attracted to the fixed object. 3. A magnetic suspension device for a pipe line, which is attracted to a fixed object having ferromagnetism and suspends and supports a pipe line, wherein the same magnetic poles of a plurality of permanent magnets are arranged to face each other via a center yoke. Side yokes are juxtaposed on the magnetic pole sides of the permanent magnets disposed at both ends of the plurality of permanent magnets, and the length (Lm), the length of the center yoke (Lyc) and the length of the plurality of permanent magnets in the magnetic attraction direction are determined. Yoke length (Ly
s) and a sandwich-type magnetic circuit configured to satisfy Lm ≧ Lyc and Lm ≧ Lys. 4. The method according to claim 3, wherein the thickness (tc) of the center yoke and the thickness (ts) of the side yoke perpendicular to the magnetic attraction direction, the saturation magnetic flux densities (Bs) of the center yoke and the side yokes, and a plurality of permanent magnets are provided. The residual magnetic flux density (Br) and the length (Lm) of the magnet in the magnetic attraction direction are:
When ts ≦ (Lm × Br) / Bs, (tc /
ts) = 1.6 to 2.4. A magnetic suspension device for a pipeline, comprising a sandwich type magnetic circuit satisfying the relationship of 1.6 to 2.4. 5. A method of suspending and supporting a pipeline on a ferromagnetic fixed object using a magnetic suspension for a pipeline, wherein the two magnetic pole sides of the permanent magnet are sandwiched between yokes. After magnetically attracting a magnetic suspension for a pipeline provided with a mold type magnetic circuit to the fixed object, a separate holding and fixing member arranged to hold the magnetic suspension for the pipeline is fixed to the fixed object. A method of hanging and supporting a pipeline, wherein the pipeline is gripped with screws and then the pipeline is gripped by a suspension member attached to the magnetic suspension for the pipeline. 6. A method of suspending and supporting a pipeline on a ferromagnetic fixed object using a magnetic suspension for a pipeline, wherein the two poles of the permanent magnet are sandwiched between yokes. After magnetically attracting a magnetic suspension for a pipeline provided with a mold type magnetic circuit to the fixed object, a separate holding and fixing member arranged to hold the magnetic suspension for the pipeline is fixed to the fixed object. And suspending the conduit with a suspending member attached to the conduit magnetic suspension. 7. A method for suspending and supporting a pipeline on a fixed object having ferromagnetism using a magnetic suspension for a pipeline, wherein the two poles of the permanent magnet are sandwiched between yokes. After magnetically attracting a magnetic suspension for a pipeline provided with a mold type magnetic circuit to the fixed object, a separate holding and fixing member arranged to hold the magnetic suspension for the pipeline is fixed to the fixed object. A method for suspending and supporting a pipeline, wherein the pipeline is held by a suspension member attached to the magnetic suspension for a pipeline.