WO2019240440A1

WO2019240440A1 - Assembly apparatus for check valve of grouting steel pipe

Info

Publication number: WO2019240440A1
Application number: PCT/KR2019/006920
Authority: WO
Inventors: 송양수
Original assignee: 진양비지엠텍
Priority date: 2018-06-14
Filing date: 2019-06-10
Publication date: 2019-12-19
Also published as: KR101929356B1

Abstract

The present invention relates to a check valve assembly apparatus for a grouting steel pipe, which allows an unthreaded check valve to be rotationally press-fitted into a thread groove of the grouting steel pipe, thereby maximizing secure coupling and air-tightness while preventing the check valve from separating due to internal pressure and vibrations caused upon hole punching. To implement the above, the present invention provides a check valve assembly apparatus configured to assemble a check valve (200) onto a grouting steel pipe (100) of a fixed length, comprising: a drill jig (10) for forming a through hole (101) onto the grouting steel pipe (100); a screw tap jig (20) for threading an inner circumferential surface of the through hole (101); a valve supply unit (30) for supplying and placing the check valve (200), which is unthreaded on an outer surface thereof, onto the entrance of the through hole (101); and a valve screw press-insertion jig (40) for transmitting a pressure, along with a rotational force, to the check valve (200) placed onto the through hole (101), so as to cause the check valve (200) to be threaded into the through hole (101).

Description

Check valve assembly device for grouting steel pipe

The present invention relates to an apparatus for assembling a check valve of a grouting steel pipe, and more particularly, to an apparatus for assembling a check valve in a manufacturing process of a grouting steel pipe, so that the assembling work of the check valve can be made more quickly and efficiently.

In general, a grouting injection device is used to drill and inject the injection material into the ground or rock to improve and reinforce the ground of the tunnel excavation surface, soft paper, or incision.

In particular, the steel pipe is inserted at regular intervals along the circumference of the tunnel to insert a steel pipe, and the grout material is injected to reinforce or reinforce the ground, and to detect cracks and cavities in the rock during the excavation of the tunnel to form a drill hole having a predetermined diameter. The grout material is injected into this drilling hole.

That is, after the grouting steel pipe is inserted into the drilling hole, the grout material is supplied to the ground through a check valve fastened to the steel pipe.

On the other hand, Korean Patent Publication No. 2016-19572 (2016.02.22) as a conventional example of the check valve fastened to the grouting steel pipe discloses a technology related to the check valve for the steel pipe applied to the grouting method.

However, since the check valve in the prior art is made by simply fitting to the fastening hole processed in the steel pipe, due to the vibration caused by the blow during the direct drilling of the steel pipe in the valve release and grout material supply process in the process There was a problem that the departure of the check valve by this, which causes a problem that the grout material is introduced again into the steel pipe.

In addition, in the related art, the fastening of the check valve is made manually, and thus there is a problem in that work efficiency and fastening quality are reduced.

The present invention has been proposed to improve the above-mentioned problems in the prior art, and the steel pipe fastening operation of the check valve can be continuously performed by an automatic device to improve product production efficiency and improve the fastening stability of the check valve. The purpose is to make it work.

The present invention for achieving the above object, Check valve assembly for assembling the check valve in the grouting steel pipe having a certain length, the drill jig for forming a through hole in the grouting steel pipe; A screw tab jig for forming a thread on an inner circumferential surface of the through hole; A valve supply unit for supplying and seating a check valve in a state in which threads are not processed on an outer surface of the inlet of the through hole; It is characterized in that it comprises a; valve spiral pressing jig for transmitting the pressing force together with the rotational force to the check valve seated in the through hole to allow the screw to be screwed into the through hole.

In the present invention, by coupling the check valve in the state of not threaded to the screw groove of the grouting steel pipe in a rotational manner, the coupling state and the airtightness can be maximized, and thus the internal pressure and punching blow during the grouting process. It is possible to prevent the phenomena of departure of the check valve due to vibration during the test.

In particular, compared to the method of screwing in the through-hole of the steel pipe in the state that the thread of the check valve in advance shows the advantage that the tightening force can be maximized.

1 is a schematic structural diagram of a check valve assembly apparatus of a grouting steel pipe according to an embodiment of the present invention.

Figure 2 is a detailed structural diagram of the main assembly of the present invention.

Figure 3 is a plan view of the main assembly part assembly in the present invention.

4 is a side view of the check valve supply unit in the present invention.

5 is a detailed cross-sectional structural view of the check valve supply unit in the present invention.

Figure 6 is a side view of the check valve component in the present invention.

7 is a plan view of the check valve component in the present invention.

Figure 8 is a bottom perspective view of the check valve component in the present invention.

9 to 11 is a process chart of the assembly process of the check valve in the present invention.

12 is a detailed structural diagram of the fitting portion of the check valve and the steel pipe through hole in the present invention.

13 is a detailed view of the valve press cylinder main part according to another embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First, the configuration of the check valve assembly of the grouting steel pipe according to an embodiment of the present invention with reference to Figures 1 to 8 as follows.

In the present embodiment, the check valve assembly apparatus for assembling the check valve 200 to the grouting steel pipe 100 having a predetermined length includes a drill jig 10 for forming a through hole 101 in the grouting steel pipe 100, A valve supply unit for supplying and seating a screw tap jig 20 for forming a thread on the inner circumferential surface of the through hole 101 and a check valve 200 in a state where the thread is not processed on the outer surface toward the inlet side of the through hole 101 ( 30) and the check valve 200 is composed of a valve spiral press-fit jig 40 for transmitting the pressing force together with the rotational force to the check valve 200 seated in the through hole 101 such that the check valve 200 can be screwed into the through hole 101. do.

In particular, the valve supply unit 30 is a storage pipe 31 in which a plurality of check valves 200 are stacked, and a plurality of storage pipes 31 are mounted at regular intervals, and by a step motor (not shown). A supply cylinder for supplying a circular turntable 32 which rotates around the rotating shaft 32a and a check valve 200 dropped from the storage pipe 31 to the through hole 101 of the grouting steel pipe 100. 33).

In addition, a valve guide part 34 configured to guide the check valve 200 in which horizontal movement is performed by the supply cylinder 33 is formed at one side of the valve supply part 30, and at one end of the valve guide part 34. The moved check valve 200 is seated in the through hole 101 portion of the grouting steel pipe 100 and a vertical through hole 35 in which the spiral press jig 40 is lowered from the top is formed, and a storage pipe ( 31) The press cylinder 36 for pressurizing the check valve 200, which is stacked and stored therein at a predetermined pressing force, is configured at an upper portion thereof.

In addition, the drill jig 10, the screw tap jig 20, and the valve spiral press-fit jig 40 are rotated from the sub-motor 80 while being driven up and down by the respective drive cylinders S1, S2, and S3. Power is received. Reference numeral 90 denotes a shanghai cylinder for simultaneous lifting and lowering of the entire jig.

On the other hand, the check valve 200 in the present invention is saw blade groove 210 is formed on the upper surface along the rim, the saw blade on the bottom surface of the valve spiral press jig 40 is connected to transmit the rotational force to the check valve 200 A saw blade portion 41 is formed to be engaged with the groove 210, the lower portion of the check valve 200 is provided with a circular seating protrusion 220 for mounting on the inlet side of the through hole 101, It can be seen that the mounting protrusion 220 is formed in a portion symmetrical on both sides of the groove 230 for initial engagement with the thread formed on the inner peripheral surface of the through hole 101. Reference numeral 250 denotes an opening and closing rubber stopper of an elastic material configured therein.

The effect of the check valve assembly of the present invention grouting steel pipe constituting such a configuration will be described.

The grouting steel pipe 100 is seated on the guide roller 60 of the work cart and is drilled by the fixing jig 70, and drilled by the drill jig 10 and the screw tab jig 20. When this is processed, the check valve 200 is assembled by the valve spiral press jig 40.

That is, at this time, as the drill jig 10 which is rotated at a high speed in the state in which the overall descending is made by the Shanghai Song cylinder 90 is additionally lowered, the through hole 101 passes through the corresponding position of the grouting steel pipe 100. After being formed, the screw tap jig 20 is rotated with the lowering to form a screw thread on the inner wall surface of the through hole 101.

As such, the check valve 200 may be seated in the hole 101 formed in the form of a female screw. In this case, the valve supply part 30 is lowered and the valve guide part is driven by the supply cylinder 33. As the check valve 200 loaded on the 34 is pushed out, the hole 101 of the check valve 200 is seated.

In particular, since the bottom of the check valve 200 is provided with a circular seating protrusion 220 which can be inserted into the through hole 101, it is possible to achieve a stable seating state in the through hole 101 as shown in FIG. .

Thereafter, the valve spiral press jig 40 is rotated and the lowering is made. Accordingly, the saw blade portion 41 formed on the bottom surface of the jig is engaged with the saw blade groove 210 formed on the check valve 200. As shown in FIG. 10, a rotational force is transmitted to the check valve 200 to make the press fit.

In particular, since the saw blade portion 41 is formed along the periphery of the valve spiral press jig 40 and the check valve 200, the valve spiral press jig 40 may be engaged with each other during the rotation process. .

In addition, when the initial rotational force of the check valve 200 is generated, the grooves 230 are formed on both sides of the check valve 200 in a symmetrical form at the bottom of the check valve 200, so that the thread formed in the through hole 101 and stable engagement can be made. Can be.

Accordingly, the indentation is made while the thread is formed on the outer surface of the check valve 200 to maximize the airtightness with the through hole 101 and maintain a stable fastening state.

On the other hand, assembling work such as the check valve 200 is made continuously, because a plurality of the storage pipe 31 is supplied to the check valve 200 is provided on the turntable 32 step rotation of the turntable 32 It can be seen that the continuous supply of the check valve 200 can be made according to the operation.

In particular, since the push cylinder 36 is formed on the upper portion of the storage pipe 31, the check valve 200 is prevented from occurring due to a supply failure caused by the check valve 200 being caught on the inner wall of the storage pipe 31. ) Shows the advantage that can be made.

When the assembly of the check valve 200 is completed, the grouting steel pipe 100 is rotated at a predetermined angle with the steel pipe driving motor 50.

Therefore, in the present invention, in the process of assembling the check valve 200 to the grouting steel pipe 100, the check valve 200 is not threaded on the outer surface of the grouting steel pipe 100 through which the threading of the grouting steel pipe 100 is performed. By tightening the pressure in the rotation method, the coupling state and airtightness can be maximized, and thus, the phenomena of the check valve due to vibration during internal pressure and punching strike can be prevented in the grouting process.

In particular, it shows an advantage that the tightening force can be maximized as compared to the method of screwing in the steel pipe through-hole 101 in the state that the thread is processed in the check valve 200 in advance.

Meanwhile, FIG. 13 illustrates another embodiment of the present invention, and an elastic spring 36a for pressing the check valve 200 with a predetermined elastic force is provided at a lower end of the rod 36 'of the push cylinder 36. In the elastic spring 36a, a pressing protrusion 36b of a sponge material may be provided.

When such a configuration is achieved, the elastic pressing force by the elastic spring 36a is transmitted in transmitting the pressing force to the check valve 200 stacked and stored in the storage pipe 31, so that the check valve 200 according to the sudden pressing pressure is transmitted. The occurrence of breakage is prevented.

In particular, it can be seen that since the pressing projection 36b is further provided at the center of the elastic spring 36a, a double elastic pressing force can be applied.

Claims

In the check valve assembly device for assembling the check valve 200 to the grouting steel pipe 100 having a predetermined length,

A drill jig 10 for forming a through hole 101 in the grouting steel pipe 100;

A screw tab jig 20 for forming a screw thread on an inner circumferential surface of the through hole 101;

A valve supply part 30 for supplying and seating a check valve 200 in a state in which threads are not processed on an outer surface of the inlet side of the through hole 101;

A valve spiral press-fit jig 40 for transmitting the pressing force together with the rotational force to the check valve 200 seated in the through hole 101 so that the check valve 200 can be screwed into the through hole 101;

Check valve assembly of the grouting steel pipe comprising a.
The method according to claim 1,

The valve supply unit 30 has a circular shape in which a plurality of check pipes 200 are stacked, and a plurality of storage pipes 31 are rotated about a rotation shaft 32a with a plurality of storage pipes 31 mounted at regular intervals. The turntable 32 of the grouting steel pipe, characterized in that consisting of a supply cylinder 33 for supplying the check valve 200 dropped from the storage pipe 31 to the through hole 101 of the grouting steel pipe 100 Check valve assembly device.
The method according to claim 2,

One side of the valve supply part 30 is provided with a valve guide part 34 for guiding the check valve 200 which is horizontally moved by the supply cylinder 33, and one end of the valve guide part 34 is moved. The check valve 200 is seated in the through hole 101 portion of the grouting steel pipe 100, and a vertical through hole 35 in which the spiral press jig 40 is lowered from the upper portion is formed, and the storage pipe 31 is formed. The upper part of the check valve assembly which is stacked in the inside of the check valve assembly of the grouting steel pipe, characterized in that the pressing cylinder (36) configured to pressurize the pressure to a certain pressing force.
The method according to claim 1 or 2,

The check valve 200 has a saw blade groove 210 is formed on the upper surface along the rim, and saw blade groove 210 and the lower surface of the valve spiral press jig 40 is connected to transmit a rotational force to the check valve 200 The check valve assembly of the grouting steel pipe, characterized in that the saw blade portion 41 is formed so that the engagement of the.
The method according to claim 1 or 2,

The lower portion of the check valve 200 is provided with a protruding seating protrusion 220 having a circular shape for insertion and insertion at the inlet side of the through hole 101, and the seating protrusion 220 has a screw thread formed on the inner circumferential surface of the through hole 101; Grooving steel pipe check valve assembly apparatus, characterized in that formed in the symmetrical portions on both sides of the groove portion 230 for the initial engagement of the.
The method according to claim 3,

An elastic spring 36a is provided at a lower end of the rod 36 'of the push cylinder 36 to pressurize the check valve 200 with a predetermined elastic force, and a pressing protrusion 36b made of sponge material is provided inside the elastic spring 36a. Check valve assembly of the grouting steel pipe, characterized in that the provided.