JPH0313030Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Purpose of the Invention" The present invention relates to a pipe escape prevention mechanism in a flexible conduit, and is applicable to a connecting conduit that enables bending, eccentricity, and twisting, that is, rotation in the circumferential direction of the pipe. The purpose of this invention is to provide a mechanism that can accurately prevent detubation.

Industrial Application Fields: Technology to prevent pipe removal in flexible pipes used under conditions where bending, eccentricity, and twisting occur.

BACKGROUND TECHNOLOGY In a pipe formed by connecting a series of pipe bodies, bending, eccentricity, and torsion act on a pipe, and it is necessary to immediately respond to any of these action conditions, and moreover, to overcome them. There is a need to prevent tubes from escaping, and there are two types of devices that have been used for this purpose: those that prevent the tube from escaping on the inside of the tube, and those that prevent the tube from escaping on the outside of the tube. .

That is, an example of the former is as shown in FIG. 7, in which the other tube end 32 is inserted into the socket portion 31 formed on one tube end to be connected, and the socket portion 32 formed on the side of the inserted tube end 32 is A locking ring 41 is engaged with the set bolt 34 provided on the socket part 31 in the groove part 33, and a packing material 35 is interposed between the two pipe bodies to form a seal. . Further, as an example of the latter, as shown in FIG. 8 or 9, both pipe ends 36 and 37 are
A connecting body 38 is interposed between each tube end 3.
A tightening bolt 39 or a connecting plate 39a is attached between the connecting seats 40, 40 or 40a, 40a arranged facing each other on the front and back or both sides of the pipes 6, 37, and both pipe ends 36, 37 and the connecting part. A sealing packing material is interposed between the body 38 and the body 38, respectively.

Problems to be Solved by the Invention However, each of the above-mentioned conventional devices has its own problems.

That is, in the case shown in FIG. 7, the function of preventing the pipe from coming off when the pipe is bent is concentrated at one point on the circumference of the pipe, which increases the possibility of breakage and lacks stability. Furthermore, in many cases, it is inappropriate to form a pipe escape prevention mechanism inside the pipe body due to the use of the pipe, and since it is assumed that the socket part 31 is provided, the application is limited to cast pipes, and it is not suitable for general use. This method cannot be applied to a tubular body that has been rolled and formed, and furthermore, it is not easy to process the groove portion 33 at the tube end 32 inserted into the socket portion 31.

Further, although the devices shown in FIGS. 8 and 9 can provide a nearly favorable response to bending and eccentricity, due to their construction, they cannot provide sufficient response to torsion.

"Structure of the invention" Means for solving the problem An interposed pipe is provided between the ends of the two pipe bodies to be connected, and packing is interposed between the interposed pipe and each end of the pipe body. Attachment seats are integrally provided on both sides of the intervening pipe, and connecting member bodies are attached to these mounting seats so as to be slidable along the axial direction of the intervening pipe, and mounting seats are provided on both ends of the intervening pipe. Circular protrusions are formed, and engaging parts are provided on these circular protrusions so as to be rotatable around the circular protrusions, and each of the above-described tube bodies is fitted with the above-described engaging parts by sliding the connecting part body. A pipe escape prevention mechanism for a flexible pipe line, characterized in that a mating joint seat is integrally provided on the outer surface of the joint seat.

Function The joint seat provided on both pipe bodies to be connected and the connecting body and engagement body attached to both sides of the intervening pipe provided between the ends of the two pipe bodies engage and connect the two pipe bodies. Prevents the tube body from escaping from the interposed tube. Since the connecting body is slidably provided on both sides of the interposed tube, the connecting body slides appropriately due to the extraction force, and each engaging body engages with the joint seat of both tube bodies. It forms a state and transmits the pull-out force, that is, achieves a balanced and stable escape prevention effect.

In addition, since the above-mentioned joint seat is provided on the circular protrusion of the connecting part body so as to be rotatable about the circular protrusion,
Bending and eccentricity between the two tube bodies connected via the intervening tube can be achieved without leaving undue stress.

Furthermore, the engagement between the joint seat and the rotatable engagement member of the connecting member as described above effectively tolerates the twisting even if twisting occurs between the two connected tubes.

EXAMPLE A specific embodiment of the present invention will be described with reference to the attached drawings. FIG. 1 shows one of the embodiments of the present invention. Mounting seats 11, 11 are provided oppositely on both ends of the sleeve-shaped interposed pipe 1 to be covered, and the connecting body 4 is attached to these mounting seats 11, 11. A circular protruding seat 21 is formed on each of the circular protruding seats 21, and the engaging member body 5 is rotatably attached to these circular protruding seats 21. Further, each of the above-mentioned pipe bodies 2, 2 is provided with a connecting seat 3 on its outer surface which engages with the above-mentioned engaging part body 5, and the above-mentioned connecting part body 4
is attached by means of a presser plate 8 and a stopper 9 as shown in FIG. 1, so that the engaging body 5 is positioned outside the joint seat 3 with an appropriate gap as shown in FIG. The pipe body 2 is formed by the engaging part body 5 and the joint seat 3.
to prevent escape of each tube body 2 and sleeve-shaped interposed tube 1.
A locking piece 7 is locked and tightened through a packing 6 between the two. More specifically, the connection part body 4 is attached by the presser plate 8 by arranging long holes 4a in the connection part body 4 as shown in FIG. 1, and positioning the intervening pieces 14 in these long holes 4a. , the intervening piece 14 and the elongated hole 4a
There is a gap between them as shown in FIG.

The specific attachment relationship of the engaging member bodies 5 at both ends of the aforementioned connecting member body 4 is as shown in FIG. As shown in FIG. 1, a plurality of screw rods 22 are disposed at the top end of the protruding seat 21. As shown in the figure, the engaging part body 5 having an inner hole is attached to such a circular protruding seat 21 so as to be rotatable in the circumferential direction of the protruding seat. 5 is attached, the locking plate 23 is attached to the top end of the protrusion 21, and the screw rod 2
2, the screw 24 is engaged and tightened to prevent the engagement part body 5 from being pulled out and to form the above-mentioned rotatable relationship.
As shown in FIG. 1, the above-described engaging member 5 has a rectangular portion 5a formed on the top end side. The above-mentioned interposed tube 1 is replaced with a sleeve-shaped one covered between the ends of the tube bodies 2 and 2 as shown in Figs. can do. That is, as shown in FIG. 6, socket portions 2a, 2a may be formed at the ends of the tube bodies 2, 2, and the interposed tube 1 may be installed between these socket portions 2a. can. Further, instead of providing the above-described mounting seats 11 at both ends of the interposed tube 1, they may be provided at one end of the interposed tube 1, or at an intermediate portion.

Furthermore, the joint seat 3 does not necessarily need to be provided as a ring surrounding the entire outer surface of the tube body 2; in other words, it is possible to attach a partial arc shape such as a fan shape to the necessary part by welding or the like. good.

The above-mentioned connecting body 4 is generally installed on both sides of the tube body 2 and the interposed tube 1 as shown in FIG. 3, and their operational relationship is shown in FIGS. 4 and 5. As shown in contrast, the above-mentioned pull-out load acting between the two tube bodies 2, 2 is applied to the plurality of connecting parts 4, 4 in a distributed manner. That is, if each connecting body 4 is now fixed to the interposed tube 1 and both tube bodies 2, 2 are eccentric in the horizontal direction, as shown in FIG. An extraction force is transmitted from the one end side engagement point p of one connecting body 4 to the interposed tube 1 via the connecting body 4, and from the intermediate tube 1 to the connecting body 4 via the connecting body 4 of the other force. The signal is transmitted to the pipe body 2 on the right side of the figure through the engagement point q of the member 4, and the strength of only one connecting member 4 is essentially required. It is necessary that the body 5 or the joint seat 3 be attached with sufficient strength to withstand the entire pullout load. However, as described above, the connecting part body 4 is attached in a slidable state with a gap between the elongated hole 4a and the intervening piece 14, and is provided to slide in the direction in which the pulling force is applied as described above. In the device of the present invention, as described above, the connecting body 4 slides with respect to the interposed tube 1 as shown in FIG. Since this is possible, both sides of each joining seat 3 are joined to the engaging member 5 to form a pull-out force transmission system, and the pull-out load is effectively distributed to the connecting members on both sides. In other words, a balanced and stable transmission system is established between the connecting parts on both sides, and the strength of each member and its mounting structure is also halved.

By forming a rectangular portion 5a at the outer end portion of the engaging portion body 5, surface contact can be made with the joint seat 3, thereby stabilizing the transmission of the above-mentioned extraction force. Even if a torsional force is generated between the two tube bodies 2, 2, the connection between the joint seat 3 and the engaging part body 5 as described above ensures a stable connection without leaving undue stress between each member. Form relationships.

"Effect of the invention" According to the invention as explained above, mounting seats are integrally provided on both sides of the intervening pipe, and connecting parts are attached to these mounting seats, respectively, along the axial direction of the intervening pipe. The connecting body is slidably mounted, and circular protrusions are formed on both ends of the connecting body, and the engaging body is provided on these circular protrusions so as to be rotatable about the circular protrusions, so that no bending, eccentricity, or twisting occurs. It is stable under conditions where one or more of these occur in combination, without leaving any undue stress, and is supported by each connecting member slidably provided on both sides of the interposed pipe. It is possible to form a connecting pipe system that disperses the extraction force and has a stable and effective function of preventing pipe release, and is an industrially highly effective idea.

[Brief explanation of the drawing]

The drawings show the technical contents of the present invention, and Fig. 1 is a perspective view showing the disassembled state of the invention, Fig. 2 is a cross-sectional view of the main parts in the assembled state, and Fig. 3 4 is an end view showing the general state of the arrangement of the connecting body, FIG. 4 is an explanatory diagram of the effect of the extraction force when the connecting body is fixed to the interposed pipe, and FIG. An explanatory diagram of the effect of the extraction force when the connecting body is made slidable into the interposed tube, FIG. 6 is an explanatory diagram of the deformed state of the interposed tube according to the present invention, and FIGS. 7 to 9 are explanatory diagrams. It is each explanatory drawing which showed the aspect of the connection part in the conventional extraction prevention piping system. However, in these drawings, 1 is an interposed tube, and 2 is an interposed tube.
3 is a tube body, 3 is a joining seat, 4 is a connecting part body, 4a is its elongated hole, 5 is an engaging part body, 5a is its square part, 6 is a packing, 7 is a locking piece, 8 is a presser plate, 11 Reference numeral 14 indicates a mounting seat, 14 an intervening piece, and 21 a circular protrusion.

Claims (1)

[Scope of claims for utility model registration] 1. An intervening pipe is provided between the pipe ends of both pipe bodies to be connected,
In the structure in which packing is interposed between the interposed pipe and each end of the pipe body, mounting seats are integrally provided on both sides of the interposed pipe, and connecting parts are attached to these mounting seats, respectively. attached so as to be slidable along the axial direction of the pipe, circular protrusions are formed on both ends of the connecting body, and engaging body bodies are provided on these circular protrusions so as to be rotatable about the circular protrusions; A pipe escape prevention mechanism for a flexible conduit, characterized in that each of the above-mentioned pipe bodies is integrally provided with a joint seat on the outer surface thereof, which engages with the above-mentioned engaging part body by sliding the connecting part body. 2 Practical use in which the connecting part body is attached by a presser plate and a stopper, so that the engaging part body is located outside the joint seat with a gap, and escape is prevented by the above-mentioned engaging part body and the engaging seat. A pipe escape prevention mechanism in a flexible conduit according to claim 1 of the patent registration claim. 3. A utility model in which an engaging part body is rotatably provided on a holding shaft attached to a connecting part body, and a square part is formed on the engaging part body to connect surface-wise with a joining seat provided on each pipe body. A tube escape prevention mechanism in a flexible conduit according to claim 1.