JP3044809U - Flexible pipe joint device with protective cover - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexible cover with a protective cover for reducing the cost and the weight of a pipe body by fixing and supporting a cover body to be fitted with the pipe body by one kind of lightweight component. Pipe fitting equipment. SOLUTION: A hollow cylindrical support fitting 12 is inserted into a straight pipe portion 1a of a pipe main body 1 constituting a flexible pipe.
4 and the flat plate 13 side of the support fitting 12 is attached and fixed so as to be in contact with the bellows portion 1b, and a metal plate is formed on the outer peripheral surface of the flange 15 of the fixed support fitting 12. A protective cover 2 made of a pipe or the like is fitted and fixedly supported, and joint members 7 with other members are integrally attached to the straight pipe portions at both ends of the pipe main body 1.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 This invention uses a single lightweight component to fix and support the cover that fits on the pipe body, thus reducing costs and reducing the weight of the pipe body. It concerns the device.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, as a flexible joint device used in a place requiring expansion and contraction in the middle of a pipe, a flexible pipe joint device with a protective cover body as shown in FIG. 4 is known.

In this flexible pipe joint device, both ends and an intermediate portion of the pipe main body 1 are formed as straight pipe portions 1a, and the remaining portions are formed as bellows portions 1b, 1b. The straight pipe portions 1a at both ends of the pipe main body 1 are provided with flange portions 7 as joint members connected to other members. A cover 2 made of a metal pipe is fixedly supported on the outer periphery of the tube body 1 so as to cover and protect the tube body 1.

In order to fix and support the metal cover body 2 on the outer periphery of the pipe body 1, two ring bodies 3 are attached to a straight pipe part 1 a at the center of the pipe body 1 sandwiched between the bellows parts 1 b, 1 b. 3 is fitted, and each ring body 3, 3 abuts on the left and right bellows parts 1b, 1b. Then, a reinforcing ring 4 is interposed between the rings 3 and 3, and a weld 5 is applied to a joint between the ring 3 and the reinforcing ring 4 to connect the rings 3 and 3 to the pipe body 1. And the outer peripheral surface thereof is fixedly extended from the bellows portion 1b of the tube body 1.

On the other hand, a guide pipe 6 provided with an outer peripheral cylinder 6 b at one end of the pipe main body 6 a so as to have a U-shaped cross section is provided on the straight pipe portions 1 a at both ends of the pipe main body 1. The flat surface 6c side of the cylinder 6b is fitted so as to abut on the bellows portion 1b, and the other end of the guide pipe 6 is fitted with a flange 7 serving as a joint member. Welding 5 is applied to the joint with the portion 7 so that the outer peripheral surface of the outer peripheral tube 6b of the guide pipe 6 is fixedly extended from the bellows portion 1b of the pipe main body 1.

[0006] Thus, the cover body 2 fitted with the pipe main body 1 is welded at three places separated by 120.degree. At the joint portion with the outer peripheral surface of the ring body 3 in the middle part thereof (FIG. In addition, even at the joint portion of the guide pipe 6 with the peripheral surface of the outer peripheral cylinder 6b, three places separated by 120 ° are provided through the bolts 8 inserted through the insertion holes 2a of the cover body 2. The cover 2 is fixedly supported on the outer periphery of the tube body 1 by screwing.

Reference numeral 9 denotes an inner cylinder inserted into the pipe main body 1, and reference numeral 10 denotes an anchor base attached to the reinforcing ring 4.

Further, the flexible pipe joint device shown in FIG. 5 illustrates a case where only the both ends of the pipe body 1 are straight pipe portions 1a, 1a, and an intermediate portion thereof is only the bellows portion 1b. This is a flexible pipe joint device that is shorter than the flexible pipe joint device shown in (1).

In this case, a guide pipe 6 provided with an outer peripheral cylinder 6b at one end side of the pipe body 6a is formed on one end side of the pipe main body 6a in the same manner as shown in FIG. The guide pipe 11 having a flange plate 11b formed at one end of the pipe body 11a is fitted to the other straight pipe portion 1a.

As shown in the drawing, whether to use the guide pipe 6 and the guide pipe 11 in combination, or to use the guide pipes 6 or the guide pipes 11 in combination is a design item that can be appropriately selected.

In any case, the guide pipe 6 is fitted to the pipe main body 1 such that the flat plate surface 6c side of the outer peripheral cylinder 6b abuts on the bellows portion 1b, and the guide pipe 11 has its flange plate 11b abuts on the bellows portion 1b. The outer peripheral surfaces are fixed and projected from the bellows portion 1b of the tube main body 1, and the fitted cover body 2 and the outer peripheral surfaces of the guide pipes 6 and 11 are fixed. .

[0012]

[Problems to be solved by the invention]

 However, in such a conventional flexible pipe joint device with a protective cover body, in the case of a long body in which a straight pipe portion 1a is provided in the middle portion of the pipe body 1 with the bellows portions 1b, 1b interposed therebetween. In order to support the cover body 2 in a fixed manner, the ring bodies 3, 3 which are in contact with the right and left bellows parts 1b, 1b are fitted into the central straight pipe part 1a. The cover body 2 is fixedly supported by an outer peripheral surface of the ring body 3 with a reinforcing ring body 4 interposed therebetween.

Since the ring body 3 is formed as a heavy ring body having a constant thickness and having an insertion hole (not shown) through which the straight pipe portion 1a of the pipe main body 1 is inserted, the ring body 3 There is a problem that as the number of uses increases, the flexible fitting device becomes heavy.

In addition, a ring body with a reinforcing ring body 4 for fixing and supporting the cover body 2 is necessary because, for example, it is necessary to connect a flange part 7 for a joint to the straight pipe parts 1a at both ends. The guide pipe 6 and the guide pipe 11 which are separate parts from the ring body 3 are fitted without fitting the ring 3, and both ends of the cover body 2 are fitted through the outer peripheral surfaces of the guide pipe 6 and the guide pipe 11. It is fixed.

As described above, in the conventional flexible pipe joint device with a protective cover body, at least a ring body and a reinforcing ring body, and a guide that is a separate part from the ring body for fixing and supporting the cover body 2. Pipes must be prepared, which causes problems such as an increase in the number of parts and an increase in cost.

The present invention has been made in view of such circumstances, and an object thereof is to fix and support a cover body to a long or short pipe body with one kind of lightweight component. It is an object of the present invention to provide a flexible pipe joint device with a protective cover that can reduce the cost and reduce the weight of the pipe body.

[0017]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a flexible pipe in which both ends of a pipe body are straight pipe sections and an intermediate portion is a bellows section, as described in claim 1, At the center of the large-diameter disk, an insertion hole for the straight pipe portion is opened, and a cylindrical support fitting having a flange portion provided on the outer peripheral edge of the other side surface of the disk is provided with the flexible member. The flat side of the disc is attached to the straight pipe part of the pipe body through its through hole so that one side surface of the disk comes into contact with the bellows part. The outer peripheral surface of the flange portion of the support bracket is fitted so that the inner peripheral surface of the protective cover body is joined thereto, and the straight pipe portions at both ends of the flexible pipe are provided with joint members with other members. It is characterized by being integrally mounted.

[0018] Further, in a flexible pipe having both ends of a pipe main body as straight pipe parts and an intermediate part as a bellows part sandwiching the straight pipe part, a circle having a larger diameter than the bellows part is provided. At the center of the plate, a through hole for the straight pipe portion is opened, and at the outer peripheral edge of the other side surface of the disc, a cylindrical support fitting having a flange portion is provided. It was attached to the straight pipe part through its through hole so that one flat side surface of the disc was in contact with the bellows part, and was fixed by pressing it through the reinforcing ring body, and was sandwiched by the bellows part. In the straight pipe portion, a reinforcing ring body is interposed between a pair of opposing supporting brackets, and the reinforcing ring body and the supporting bracket are fixed while pressing the pair of supporting brackets, and the flange portion of the fixed supporting bracket. The inner peripheral surface of the protective cover is joined to the outer peripheral surface of And a joint member with another member is integrally attached to the straight pipe portions at both ends of the flexible pipe.

[0019] Further, as set forth in claim 3, a bolt insertion hole is formed at a predetermined position of a flange portion provided around the support bracket, and a nut portion is formed on an inner peripheral surface side of the bolt insertion hole. A bolt having a cover body inserted thereinto is screwed into the nut portion, and a reinforcing edge is provided on a periphery of the other side surface of the insertion hole in the support fitting as described in claim 4. It is characterized by protruding parts.

[0020]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory sectional view showing an example of a flexible pipe joint device with a protective cover body according to the present invention. The same members as those in the related art will be described with the same reference numerals.

As shown in FIG. 1, a pipe body 1 constituting a flexible pipe is formed with straight pipe portions 1a at both ends and a central portion, and with bellows portions 1b and 1b at the remaining portions. Have been. A pair of support fittings 12 are inserted into the straight pipe portion 1a at the center of the pipe main body 1 so as to abut on the right and left bellows portions 1b.

As shown in FIG. 2, the support fitting 12 forms a disk 13 having a diameter larger than that of the bellows section 1b and having an insertion hole 14 for the straight pipe section 1a at the center thereof. The plate 13 is formed as a cylindrical body having a flange portion 15 having a shorter width than the outer peripheral edge of the other side surface. Further, bolt insertion holes 16 are formed in the flange portion 15 at three locations separated by 120 °, and a nut portion 17 for screwing a bolt is provided on the inner peripheral surface side of the bolt insertion hole 16. I have.

Further, a short-length reinforcing edge portion 18 that is joined to the outer peripheral surface of the straight pipe portion 1a protrudes from the hole peripheral edge on the other side surface of the insertion hole 14 formed in the disk 13. Reference numeral 9 denotes an inner cylinder inserted into the pipe main body 1, and reference numeral 11 denotes an anchor base attached to the reinforcing ring body 4.

Next, assembly of the flexible pipe joint device will be described. First, a pair of short pipe bodies 1 and 1 having both ends of the bellows section 1b as straight pipe sections 1a and 1a are formed, and inserted into the straight pipe sections 1a and 1a on one side of the pipe bodies 1 and 1 respectively. The support fittings 12, 12 are attached so that one side surface of the flat disk 13, 13 is in contact with the outermost bellows 1b, 1b through the holes 13, 13.

Thereafter, the straight pipe portions 1a, 1a to which the support fittings 12, 12 are attached are butt-butted and welded 5 to connect the two pipe main bodies 1, 1, and both ends and a central portion thereof are straight pipe portions 1a. Further, a flexible tube is formed in which the right and left sides of the central straight tube portion 1a are formed as bellows portions 1b, 1b.

Then, a reinforcing ring 4 is interposed between a pair of support fittings 12, 12 fitted in the central straight pipe portion 1 a, and the reinforcing ring 4 presses the support fittings 12, 12, and the support fitting 12 is pressed. , 12 are welded 5 to the joints with the reinforcing edges 18 protruding from the peripheral edge of the insertion holes 14 to fix the support fittings 12, 12.

On the other hand, the straight pipe portions 1a, 1a at both ends are also provided with the support fittings 12, 12 through the insertion holes 14, 14 so that one side surface of the flat disk 13, 13 is connected to the pipe main body 1, 1. The reinforcing ring 4 presses the support fittings 12, 12, and protrudes from the peripheral edge of the insertion hole 14 in the support fittings 12, 12. Welding 5 is applied to the joint with the edge 18 to fix the support fittings 12 and 12.

In this state, the cover body 2 made of a metal pipe is inserted and fitted so as to cover the support fittings 12,... Projecting from the bellows portion 1 b of the tube body 1, and both ends of the tube body 1. The cover body 2 inserted into the cover member 2 has bolts 8 inserted through the insertion holes 2a of the cover body 2 into nut portions 17 provided at three places on the flange portion 15 of the support fitting 12 with an interval of 120 °. And fixed to the support fitting 12.

The support fittings 12, 12 fixed to the straight pipe portion 1a at the center and the cover 2 may be fixed via the bolts 8 in the same manner as described above. In this case, three portions (not shown) of a portion to be joined to the outer peripheral surface of the flange portion 15 of the support fitting 12 at a distance of 120 ° are welded (not shown) and welded to the support fitting 11.

When the cover body 2 is fixed to the support fittings 12,..., The end portions of the straight pipe portions 1a, 1a of the pipe body 1 are provided with flange portions 7, 7 as joint members with other members. It is welded and made into a flexible fitting with a protective cover.

In addition, the one shown in FIG. 3 does not have a straight pipe portion 1a at the center of the pipe main body 1, but has a straight flexible section 1a, 1a at both ends and only a bellows portion 1b at an intermediate portion. The present invention relates to a flexible pipe joint device having a protective cover body made of a pipe. In this case, one side of the straight pipe part 1 fixes the cover body 2 using the nut part 17 and the bolt 18 of the support fitting 12, and the other side of the straight pipe part 1 is the nut part of the support fitting 12. 17 shows an example in which the outer peripheral surface of the flange portion 15 of the support fitting 12 and the cover body 2 are simply welded without using the same.

Therefore, according to these embodiments, when the cover body 2 is fitted to the outer periphery of the pipe main body 1 and fixedly supported, the cover bodies 2 at both ends of the straight pipe portion 1a are fixed as in the related art. A plurality of separate parts, such as a guide pipe 6 or guide pipe 11 having a complicatedly bent shape for fixing the cover body 2 for fixing the cover body 2 at an intermediate portion of the straight pipe portion 1a. There is no need to prepare a single support bracket 12 and only one type of support fitting 12 is required, so that the cost can be reduced.

In addition, the one kind of support fitting 12 that can be used in common is not formed as a heavy material having a constant thickness as in the conventional ring body 3 but as a light-weight hollow cylindrical body. Can be reduced.

Furthermore, since the support fitting 12 is provided with three nuts 17,... At 120 ° intervals in the flange 15 provided around the outer peripheral edge thereof, the pipe body 1 Can be easily fixed by screwing the bolts 8 through which the cover body 2 is inserted into the nut portions 17 at the time of fixing the cover members 2 at both ends of the cover member. The cover 2 and the outer peripheral surface of the flange portion 14 of the support fitting 11 may be welded, and in any case, the cover 2 can be easily fixed.

[0035]

[Effect of the invention]

 As described above, according to the present invention, one type of lightweight support is used when the outer periphery of the pipe body having the straight pipe portion and the bellows portion is covered with a cover body such as a metal pipe and fixedly supported. Since it is configured to be able to be performed only with metal fittings, it is possible to provide a flexible pipe joint device with a protective cover body having elasticity at a lower cost than before and to reduce the weight. Can also.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view showing an example of a flexible pipe joint device with a protective cover body according to the present invention.

FIG. 2 is a sectional view for explaining a support fitting in FIG. 1;

FIG. 3 is an explanatory sectional view showing another example of the flexible pipe joint device with a protective cover body according to the present invention.

FIG. 4 is an explanatory sectional view showing an example of a conventional flexible pipe joint device with a protective cover body.

FIG. 5 is an explanatory sectional view showing another example of a conventional flexible pipe joint device with a protective cover body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe main body 2 Cover body 4 Reinforcement ring body 7 Flange part 8 Bolt 12 Support bracket 13 Disk 14 Insertion hole for straight pipe part 15 Flange part 16 Insertion hole for bolt 17 Nut part

Claims (4)

[Utility model registration claims] An insertion hole for a straight pipe portion is provided at a central portion of a circular plate having a diameter larger than that of the bellows portion for a flexible pipe having both ends of a pipe body as straight pipe portions and an intermediate portion as a bellows portion. At the same time, a cylindrical support fitting having a flange portion provided on the outer peripheral edge of the other side surface of the disk is inserted into a straight pipe portion of the pipe body of the flexible pipe via a through-hole thereof, and the flat plate of the disk is inserted into the flat pipe. While attaching so that one side of the shape contacts the bellows,
The support tube is fixed while being pressed through the reinforcing ring body, and the outer peripheral surface of the flange portion of the fixed support bracket is fitted so that the inner peripheral surface of the protective cover body is joined thereto. A flexible pipe joint device with a protective cover body, wherein joint members with other members are integrally attached to straight pipe portions at both end sides. 2. A flexible pipe having both ends of a pipe main body as straight pipe parts and an intermediate part as a bellows part sandwiching the straight pipe part, and the straight pipe is provided at a central part of a disk having a diameter larger than the bellows part. Along with opening a through hole for the part, a cylindrical support fitting formed by providing a flange on the outer peripheral edge of the other side of the disk,
The flat tube of the flexible tube is attached to the straight tube portion of the tube main body through its insertion hole so that one flat side surface of the disc comes into contact with the bellows portion, and is fixed while being pressed through a reinforcing ring body, In the straight pipe portion sandwiched between the bellows portions, a reinforcing ring was interposed between a pair of opposing support fittings, and the reinforcing ring body and the support fittings were fixed while pressing the pair of support fittings, and were fixed. The outer peripheral surface of the flange portion of the support fitting is fitted so as to be joined to the inner peripheral surface of the protective cover body, and a joint member with another member is integrally formed on the straight pipe portions at both ends of the flexible pipe. A flexible pipe joint device with a protective cover body, characterized in that it is attached to a flexible pipe joint device. 3. A bolt insertion hole is formed at a predetermined position of a flange portion provided around the support bracket, a nut portion is provided on an inner peripheral surface side of the bolt insertion hole, and a cover is provided on the nut portion. The flexible pipe joint device with a protective cover body according to claim 1 or 2, wherein a bolt inserted through the body is screwed. 4. A flexible tube with a protective cover body according to claim 1, wherein a reinforcing edge is projected from a peripheral edge of the hole on the other side of the insertion hole in the support fitting. Joint equipment.