JPS6314154Y2 - - Google Patents

Description

[Detailed description of the invention] ``Purpose of the invention'' The present invention relates to the invention of a pressure-resistant anchoring mechanism for pipe bodies, which is capable of locking, closing, or anchoring pipes such as pipes under effective pressure-resistant conditions. The purpose of the present invention is to provide a mechanism that is capable of restricting the flow of fluid, has a compact structure, can be appropriately installed in a pipe, and is easy to handle.

Industrial field of use A mechanism for sealing or restricting the flow of fluid at the outlet of installed pipelines.

BACKGROUND OF THE INVENTION In piping lines through which water or other fluids flow, the fluids flow under certain pressure conditions. By the way, when carrying out repair work on such pipes or repairing the wall surface where the open end is provided, it is necessary to block or restrict the flow of fluid in the pipe. To this end, conventional practice has generally been to plug the tube end opening 1 with a plug 20 to close it off, as shown in FIG.

Problems to be Solved by the Invention However, the above-mentioned conventional caps require a hammer or the like for the capping operation, and are unavoidably complicated. Particularly in cases where fluid pressure is present, it is not always possible to form a stable blockage or flow-restricted state even if the plug is press-fitted with continuous plugging, and the fluid pressure often forces out the plug.

"Structure of the invention" Means for solving the problem A cross section is created between the receiving plate fixed to the central screwing shaft and the push plate pressed by the first nut engaged with the central screwing shaft. A C-shaped annular packing material is interposed inside the tube to be attached, and the first nut is screwed in to press the packing material so that it bulges in the circumferential direction and closes the auxiliary tube. In the above, a plurality of pressing members are disposed on the pressing plate, and a link member having a proximal end pivotally connected to a second nut separately screwed onto the threaded shaft is attached to a pressure receiving portion formed on the distal end side of the pressing members. A pressure-resistant locking mechanism for a tube body characterized by engaging the tip portions.

Action By screwing the first nut into the central threaded shaft, the press plate is pushed against the receiving plate, causing the C-shaped packing to bulge in the circumferential direction, and the C-shaped packing to hold the pipe to be mounted. Obstruction.

By screwing in the second nut, a link member whose proximal end is pivoted to the second nut acts on the pressure receiving portion on the tip side of the plurality of pressing members disposed on the pressing plate, and the link member whose base end is pivoted to the second nut acts on the pressure receiving portion on the tip side of the plurality of pressing members disposed on the pressing plate. The member is crimped onto the inner surface of the tube to be attached to form a stable engagement relationship.

Embodiment A specific embodiment of the present invention will be described with reference to the attached drawings. In the present invention, a push plate 2 is pressed by a receiving plate 3 fixed to a central screw shaft 4 and a first nut 5. An annular packing material 6 having a C-shaped cross section is interposed between the tube 1 and the pipe 1 to be installed, and the first nut 5 is screwed in to press the packing material 6 so that it bulges in the circumferential direction. In this case, the threaded shaft 4 is appropriately lengthened as shown in FIG. 7, and the distal end of a link member 8 whose proximal end is pivoted 11 to a second nut 10 which is separately screwed onto the screw shaft 4 to a pressure receiving portion 17 formed on the distal end side of the pressing member 7. Each link member 8 is attached to the second nut 10 by providing a ring body 9 that is rotatable with respect to the nut 10.
The ring body 9 is provided with the pivot portion 11, and in the case shown, an auxiliary nut 16 is screwed onto the second nut 10 to allow rotation of the ring body 9. , this structure can be any other one. The pressing member 7 may be attached to the pressing plate 2 by welding as shown, or by pivoting using a pin or the like. The outer surface of the tip side of the pressing member 7 is attached to the attached tube 1
It is preferable that the arcuate surface 7a conforms to the inner shape of the inner surface 7a.

It is preferable that the second nut 10 described above rotates in the opposite direction to the first nut 5 so that the pressing force of the pressing member 7 is applied to the inner surface of the pipe 1.
While the nut 5 is screwed in such a way as to be pushed downward in FIG. 2, thereby allowing the packing material 6 to be pressed and extruded, the second nut 10 is screwed in such a manner as to be pulled upward. By doing so, the link member 8 is pulled up perpendicularly to the inner surface of the tube 1, and a pressing force is applied to the pressing member 7. That is, by screwing the first and second nuts in opposite directions to increase the pressure, when the internal pressure increases and a pushing force is applied to the screw shaft 4, the pushing force by the second nut 10 and the link member 8 increases. This results in a pressure-resistant locking effect proportional to the internal pressure.

In the illustrated embodiment, a mode is shown in which the present invention is particularly suitable for being set at the tube end opening, and the locking is performed by a wedge mechanism that is further attached to the pressing member 7 using the tube end. is planned. In other words, such a locking mechanism is generally applied particularly to the pipe end, and when the locking force is loosened, the locking mechanism immediately falls from the pipe end and the pressure fluid is released. will erupt. Therefore, it is clear that it is of great practical significance to ensure that the tube end is properly attached.
A U-shaped stopper 12 is attached to the tube end with a stopper 13, and an inclined surface 14 that engages with the wedge portion 15 is recessed into the pressing member 7. If the lid is made of such a wedge portion 15 and the recessed inclined surface 14, in the event that the entire proposed mechanism is pushed out, the pressing member 7 will press the wedge portion 15, making the engagement relationship stronger. Achieves stable locking action.

To explain the operation of using the device according to the present invention as described above, by tightening the first nut 5 with the second nut 10 appropriately removed, the packing material 6 is effectively extruded and sealed against the inner surface of the tube body 1. It is obvious that the link members 8 may be blocked, and in this state, each of the link members 8 is pushed down and the second nut 10 is deeply screwed into the screw shaft 4, and then the tip of each link member 8 is inserted into the pressure receiving part of the pressing member 7. 17, and then rotate the second nut 10 in the opposite direction to pull it out, the tip of each link member 8 presses against the pressure receiving part 17, and accurate closing engagement can be obtained. . When using a stopper 12 having a wedge portion 15, each stopper 12 may be set as shown in the figure after such closing and engagement. If the above-mentioned screw shaft 4 is solid, complete occlusion can be obtained by the above-mentioned engagement operation, but in particular, it is necessary to properly control and drain the occluded fluid while performing construction on the target pipe body 1. If cleaning or painting the circumferential side of the opening of the tube body 1, a pipe material may be used as the threaded shaft 4, and if the effluent is to be discharged at a further distance, a pipe material may be used. Connect a hose, etc. to the tip of the screw shaft.

``Effect of the invention'' The invention as explained above provides a locking mechanism that can seal and close the pipe with favorable pressure resistance or restrict the flow of water, and the entire structure is accommodated within the pipe. It has a compact structure that can be easily set up, and it can be handled simply by tightening the first and second nuts, and can be used as a pressure-resistant device as described above without causing processing damage such as welding or drilling to the tube body. It has the advantage of being easy to handle since it can be easily worn, making it a highly effective device in practical terms.

[Brief explanation of the drawing]

The drawings show embodiments of the invention,
Fig. 1 is a partially cutaway front view of the device according to the present invention, Fig. 2 is a partially cutaway vertical side view thereof, Fig. 3 is an oblique view of the pressing member and the stop having the wedge portion, and Fig. 4 is the pressing member mounting portion. FIG. 5 is a cross-sectional view of a conventional conduit closing mechanism. However, in these drawings, 1 is a pipe to be attached, 2 is
3 is a push plate, 3 is a receiving plate, 4 is a threaded shaft, 5 is a first nut, 6 is a packing material, 7 is a pressing member, 8 is a link member, 9 is a ring body, 10 is a second nut, 11 is a shaft , 12 is a stopper, 13 is a stopper, 14 is a concave portion with a tapered surface, and 15 is a wedge portion.

Claims (1)

[Scope of utility model registration request] An annular packing material having a C-shaped cross section is interposed between a receiving plate fixed to a central screwing shaft and a pressing plate pressed by a first nut engaged with the central screwing shaft. The first nut is screwed inside the pipe to be fitted, and the packing material is pressed and expanded in the circumferential direction to close the pipe to be fitted, wherein a plurality of pressing members are disposed on the pressing plate. and a pressure receiving portion formed on the distal end side of the pressing member is engaged with a distal end portion of a link member whose proximal end is pivotally connected to a second nut separately screwed onto the threaded shaft. Body pressure-resistant anchoring mechanism.