JPH0660247U - Underground pipeline passage test equipment - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to make it possible to pull the line and mandrel all at once. [Structure] An empty hole lid provided by engaging with one pipe in the front-rear direction is provided, and the empty hole lid is provided with a plurality of air vent holes and a mandrel insertion hole at the center, and the mandrel of the hole empty lid. Insert the mandrel through the insertion hole and the pipe, and fit eye nuts on both ends of the mandrel to form a mandrel.Connect the parachute to one of the eye nuts with a wire string, and connect the wire string to the other eye nut. A main body having an air hole and an air blower pipe integrally formed with an air hole are inserted into the air hole of a blower port member provided with a cylindrical protrusion to pull out the through-passage string and pull out a passage test device for an underground conduit. It is composed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a passage test apparatus for an underground pipeline, which can easily perform a line work and a mandrel passage test in the underground pipeline passage test.

[0002]

[Prior art]

 Conventionally, there have been methods for conducting passage / passage tests of underground passages, such as a method using a line pressure air passer, a method using a PE pipe, and a method using a compressor or a dual fan. It was (A) As a method of passing and passing using a pipeline pressure air passer, push the passage body to which the passage wire is connected into the pipeline to keep the duct mouth confidential and enclose compressed air between them. Pass through the line. When the wire reaches the opponent's manhole, connect the mandrel to the wire, attach a string etc. to the rear part, pull it through the opponent's manhole, and confirm the passage.

(B) A method of conducting and passing tests using a PE pipe is to push the PE pipe into a predetermined pipe line, and when the PE pipe tip projects into a mating manhole, a string or the like is attached to the tip or the back of the pipe. After mounting, connect the mandrel, attach a string etc. to the rear part, and pull it through the mating manhole to check its passage.

(C) The method of passing / passing test using a compressor or a dual fan is to attach a string or the like to the rear part of the parachute, put it in a predetermined pipeline, and blow air by the compressor or the dual fan. When the parachute reaches the manhole on the other side, connect the mandrel to one of the strings, attach a string etc. to the rear part, and pull it through the manhole on the other side to check the passage.

However, the conventional pass-through test method has the following drawbacks. First of all, the method using the pneumatic line of the pipeline and the method using the PE pipe are attached to the wire of the passer or a string behind the PE pipe and pulled to the transmitting side or the reaching side, and then the mandrel. It is necessary to pull through, and the worker must perform the work to guide. In addition, the pipeline pneumatic liner had the drawback that work such as prohibiting the entry of the manhole during pressurization could not be performed promptly due to the pressure in the pipeline. The method using a blower also has a drawback in that a mandrel must be attached to the pulling wire and the operator must perform the work of handing.

[0006]

[Problems to be solved by the device]

 The present invention provides a passage test apparatus for an underground pipeline, which allows the underground pipeline passage test to be easily performed without manually pulling the mandrel.

[0007]

[Means for solving the problem]

 The present invention comprises a parachute, a mandrel, and a blower port member, one end of the parachute and the mandrel are connected by a wire string, and the other end of the mandrel is connected by a wire string, and the other end of the wire string is connected. Is formed by inserting the mandrel into the blower hole of the blower member and pulling out the mandrel. The mandrel is provided with a perforated lid in which the mandrel is engaged with the front and back of the cylindrical pipe. A hole for removing air and a mandrel insertion hole in the center, insert a mandrel with a screw at the tip into the mandrel insertion hole of the hole lid and the pipe, and fit an eye nut on the mandrel screw. It is composed.

[0008] Fig. 1 is a diagram showing a blower port member of a passage test apparatus for an underground pipeline of the present invention (hereinafter referred to as a test apparatus) in which a parachute is opened in the pipeline and a part thereof is cut away. 2 is a front view of the mandrel of the present invention, FIG. 3 is a plan view of the same, FIG. 4 is a view of FIG. 2 seen from the direction of EE, FIG. 5 is a view of FIG. 2 seen from the direction of ROLL, and FIG. FIG. 3 is a sectional view taken along the line of FIG.

The configuration of the test apparatus of the present invention will be described. 1 to 6, 3 is a blower port member, 4 is a parachute, 5 is a conduit, 6 is a line string, A is a mandrel, 10 is a cylindrical pipe, 11 is a hole cover, 12 is a mandrel, 14 Is an eye nut. The configuration of each component will be described. The parachute 4 is attached with four strings 4-1 for the time being, and the blower port member 3 is a cylindrical body made of a rubber material and has an outer diameter D1 which is fitted to the duct 5 and the blower pipe 20 is inserted at one end. A cylindrical protrusion 3-2 provided with an air hole 3-4 is integrally formed, an air hole 3-3 communicating with the air hole 3-4 is formed in the main body 3-1, and the tip end is slanted. Has become.

The mandrel of the present invention comprises a pipe 10 made of an aluminum material, a hollow front cover 11 made of geracon, a mandrel 12 made of iron and an eye nut 14. The perforated lid 11 is provided with an engagement protrusion 11-2 that engages with the inside of the cylindrical portion of the pipe 10, and engages with the pipe 10. The hole cover 11 is provided with a mandrel insertion hole 11-1 and a plurality of air blow holes 13 in the center, and four wind blow holes 13 in the present embodiment, so that the outer shape is a circular arc shape.

The mandrel A is connected to the parachute 4 by a line string 6. Further, the rear part is connected by a line string 6 to reach a line string winder 7 described later. FIG. 2 is a detailed view of the mandrel A, in which the hollow lids 11 are attached to both ends of the pipe 10, the mandrel 12 is inserted, the eye nut 14 is fitted to the threaded portion of the tip, and the eye nut 14 is tightened. Further, the line string 6 is connected to the eye nut 14 and the parachute 4 is attached. On the other side, a line string 6 is connected to the eye nut 14. The wire string 6 is passed through the blower port member 3, and the blower port member 3 is pushed into the mouth of the duct 5 to cover the lid.

The dimensions of one embodiment of the mandrel of the present invention will be illustrated. L0 = 30 cm, L1 = 3. 5 cm, D0 = 7.5 cm, thickness = 2 mm.

A procedure for conducting a passage / passage test of an underground pipeline using the test apparatus of the present invention will be described with reference to FIG. FIG. 7 shows a state in which the test device of the present invention is installed in a pipe line and used. In the figure, 1 is a generator and 2 is a blower (double fan). After entering the manhole 8 on the sending side, the parachute 4 is inserted into the predetermined pipe line 5, the mandrel A is inserted into the predetermined pipe line 5, and then the blower port of the blower (double fan) 2 is inserted. The member 3 is brought into a state in which it is pushed into the mouth of the predetermined conduit 5 to cover it. When air blow is started by the blower (double fan) 2, the wind passes through the air blow pipe 20 and the wind vent hole 13 of the mandrel A and reaches the parachute 4, and the parachute 4 moves including the wind. As a result, the mandrel A is pulled by the parachute 4 and moves to reach the opponent (reaching) manhole 9.

As described above, since the mandrel is not pulled by hand but passed by the air blower, the mandrel is passed by the blower, so that excellent efficiency is exhibited and the labor of the worker can be reduced to improve the working environment. It has a great effect.

[0015]

[Effect of device]

 As described above, by using the test device of the present invention, the mandrel is not pulled manually, so the labor of the operator can be reduced, and it is possible to carry out the line work and pass-through test simultaneously. Exerts excellent action and effect.

[Brief description of drawings]

FIG. 1 is a view showing a tester of the present invention in which a parachute is opened in a duct and a blower port member is shown with a part broken away.

FIG. 2 is a front view of the mandrel of the present invention.

FIG. 3 is a plan view of the mandrel of the present invention.

FIG. 4 is a view of the mandrel of FIG. 2 as seen from the direction EE.

5 is a view of the mandrel of FIG. 2 seen from the direction of the roll.

FIG. 6 is a cross-sectional view of the mandrel of FIG. 2 taken along the line Ha-Ha.

FIG. 7 is a cross-sectional view of the pipeline in a state where the test device of the present invention is arranged in the pipeline and a passage / passage test of an underground pipeline is being performed.

[Explanation of symbols]

 1 Generator 2 Blower A Mandrel 4 Parachute 5 Pipeline 6 Passage string 7 Passage string winder 8 Feeding manhole 9 Opponent manhole 10 Pipe 11 Hole lid 12 Mandrel 13 Winding hole 14 Eye nut 20 Blower pipe

Claims (2)

[Scope of utility model registration request] 1. A parachute, a mandrel and a blower port member, wherein one end of the parachute and the mandrel are connected by a wire string, and the other end of the mandrel is connected by a wire string, and the other end of the wire string is connected. Is a passage test device for an underground conduit that is drawn out by inserting it through the blower hole of the blower port member. 2. A perforated lid in which the mandrel is engaged with one pipe in the front-rear direction is provided, and the perforated lid has a plurality of wind vent holes and a mandrel insertion hole in the center, 2. The passage test apparatus for an underground conduit according to claim 1, wherein the mandrel insertion hole of the hole cover and the mandrel having a screw at its tip end are inserted into the pipe, and an eye nut is fitted to the screw of the mandrel.