KR20200098763A - Seperate type stiffener injection device - Google Patents

Abstract

Disclosed is a prefabricated reinforcing material injecting apparatus. The disclosed prefabricated reinforcing material injecting apparatus includes: a plurality of steel pipes installed on the ground and separately formed; a plurality of injecting pipes inserted into the steel pipes and separately formed; and connecting members into which the steel pipes and the injecting pipes are inserted and installed to be separable and which connect the steel pipes and the injecting pipes. Therefore, the prefabricated reinforcing material injecting apparatus can improve airtight and prefabricated properties.

Description

Assembly type reinforcement injection device{SEPERATE TYPE STIFFENER INJECTION DEVICE}

The present invention relates to an assembly-type reinforcing material injection device, and more particularly, a steel pipe, an injection pipe, and a supply pipe are separately formed according to sections, and the separated steel pipes are combined using a connecting member and a plurality of By connecting the injection pipe, the reinforcing material is injected into the perforated hole through each chamber, and the expansion material is supplied to the expansion member through the connecting member to expand, so that if the connecting member is manufactured as one type, it can be used for common use in each chamber section. In addition, it relates to an assembly-type reinforcing material injection device that forms airtightness and assembleability by simply inserting the injection pipe and the supply pipe into the connecting member through the sealing member to achieve sealing.

In general, in order to improve and reinforce the ground of the tunnel excavation surface, soft ground, or incision, a reinforcing material injection device is used that perforates the ground or rock and injects a reinforcing material (also called grout) including cement into the perforated space.

In particular, a steel pipe is inserted by drilling at regular intervals along the circumferential surface of the tunnel, and a reinforcement is injected to order or reinforce the ground, and cracks and cavities generated in the rock mass during tunnel excavation are detected to form a drilled hole of a certain diameter, and this drilling Reinforcement is also injected into the hole.

In this way, in order to inject the reinforcing material for each section using the reinforcing material injection device, an elastic member is installed inside the steel pipe to pull the compression members provided on both sides of the elastic member (or packer) in the longitudinal direction, and expand it to the outside. The chamber space is divided for each section because it is closely attached to each other.

However, in the conventional reinforcing material injection device, in order to expand the elastic member to the outside, the central connection pipe is moved in the longitudinal direction using a nut provided at the end of the steel pipe, and through this, the both sides of the elastic member are integrated through the compression member. Because of pressure, the elastic member expands radially outward and adheres to the inner circumferential surface of the steel pipe to maintain airtightness. However, the expansion and operation structure of the expansion member is very complicated, and if damage occurs in the screw thread connected to the nut, the expansion member is expanded. There is a problem that a malfunction occurs, such as a window not being made.

In addition, as the supply pipe for supplying the expanding material is installed outside the steel pipe, the size of the perforated hole increases as the diameter of the entire structure increases, and the supply pipe is damaged.

Therefore, there is a need to improve this.

As a related background technology, there is Korean Patent Publication No. 10-0605562 (2006.07.20, title of invention: multi-grouting injection device).

The present invention is created by the necessity as described above, and forms a steel pipe, an injection pipe, and a supply pipe separately according to sections, and connects a plurality of injection pipes through a connection member while combining the separated steel pipes using a connecting member. The reinforcing material is injected into the perforated hole through each chamber, and the expansion material is supplied to the expansion member through the connecting member to expand. If the connecting member is manufactured as one type, not only can it be used for common use in each chamber section, but also injected. It is an object of the present invention to provide an assembly-type reinforcing material injection device capable of forming airtightness and assembleability by simply inserting a pipe and a supply pipe into a connecting member through a sealing member.

In order to achieve the above object, the assembly type reinforcing material injection device according to the present invention includes a steel pipe installed in the ground and separated into a plurality of pieces; An injection pipe inserted into the inside of the steel pipe and separately formed in a plurality; And a connecting member in which the steel pipe and the injection pipe are detachably inserted and installed to connect the steel pipe and the injection pipe.

The steel pipe located at the most tip of the steel pipes is provided with a tip bracket, and the steel pipe located at the lowermost part of the steel pipes is provided with an end cap.

The connecting member may include a body part interconnecting the steel pipe and the neighboring steel pipes; A plurality of communication holes formed through the body portion in the longitudinal direction so that the injection tube is installed; And a seating groove formed in the body portion so that the steel pipe is installed.

The radial depth of the mounting groove is characterized in that corresponding to the thickness of the steel pipe.

The communication hole portion is characterized in that when the injection tube is inserted from both sides, respectively, it characterized in that it comprises a locking projection formed on both sides to maintain a set interval in the longitudinal direction.

The injection pipe is characterized in that it is sequentially connected only to the entry side of the communication hole so as to supply reinforcing materials to a chamber formed between one of the connecting members and the other of the connecting members.

When a reinforcing material is injected into one of the chambers, the communication hole is blocked by a closing member to prevent the reinforcing material from being moved and injected into another chamber through the connecting member.

The closing member may include a fitting portion fitted to the communication hole; And a pair of separation prevention protrusions protruding from both sides of the fitting portion and being hooked on the locking projection provided in the light red hole.

Any one of the communication hole portions is provided with a supply pipe to supply the expansion material, the communication hole portion to which the supply pipe is connected has a discharge passage formed so that the expansion material is discharged to the outside, and an expansion member is provided on the outside of the steel pipe. It is characterized in that it is expanded by the expansion material discharged from the discharge passage to partition each section.

A sealing member is installed in the communication hole to perform sealing between the injection pipe and the supply pipe.

The communication hole is characterized in that the blocking cap member is provided to block the path of the supply pipe.

The steel pipe is characterized in that the injection hole is formed to communicate with the outside, and the injection hole is provided with a check member that prevents the reinforcing material sprayed outward from flowing backward and flowing into the inside of the steel pipe.

A screw member for installation on a slope including a slope or an incision is further provided at the tip of the steel pipe.

The assembly-type reinforcing material injection device according to the present invention separates steel pipes, injection pipes, and supply pipes according to sections, and combines a plurality of separated steel pipes using a connecting member and simultaneously connects a plurality of injection pipes through the connecting member. Thus, the reinforcing material is injected into the perforated hole through each chamber, and the expansion material is supplied to the expansion member through the connecting member to expand. If the connecting member is manufactured as one type, it has the effect of being commonly used in each chamber section.

In addition, in the present invention, sealing is achieved by simply inserting the injection pipe and the supply pipe into the connection member through the sealing member, so that the airtightness and assembling property of the pipe connection portion can be formed.

1 is a perspective view of an assembly type reinforcement injection device according to an embodiment of the present invention.
2 is a view showing the installation state of the perforated hole of the assembly-type reinforcing material injection device according to an embodiment of the present invention, a cross-sectional view taken along line AA of FIG.
3 is a view showing four areas in the assembly-type reinforcement injection device according to an embodiment of the present invention, a cross-sectional view taken along line BB of FIG. 1.
FIG. 4 is an exploded perspective view of part “A” of FIG. 3.
5 is an exploded perspective view of a portion "B" of FIG. 3.
6 is an exploded perspective view of a portion "C" of FIG. 3.
7 is an exploded perspective view of a portion "D" of FIG. 3.
FIG. 8 is a cross-sectional view of an “A” part of FIG. 3.
FIG. 9 is a cross-sectional view of a portion "B" of FIG. 3.
FIG. 10 is a cross-sectional view of a portion "C" of FIG. 3.
FIG. 11 is a cross-sectional view of a portion "D" of FIG. 3.

Hereinafter, an assembly-type reinforcement injection device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

In this process, the thickness of the lines or the size of components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention and may vary according to the intention or custom of users or operators. Therefore, definitions of these terms should be made based on the contents throughout the present specification.

FIG. 1 is a perspective view of an assembly-type reinforcement injection device according to an embodiment of the present invention, and FIG. 2 is a view showing an installation state of a perforation hole of an assembly-type reinforcement injection device according to an embodiment of the present invention. 3 is a cross-sectional view showing four areas in the assembly-type reinforcement injection device according to an embodiment of the present invention, which is a cross-sectional view taken along line BB of FIG. 1, and FIG. 4 is an exploded perspective view of part “A” of FIG. 5 is an exploded perspective view of the "B" part of FIG. 3, FIG. 6 is an exploded perspective view of the "C" part of FIG. 3, and FIG. 7 is an exploded perspective view of the "D" part of FIG. 3, and FIG. Part "A" is a cross-sectional view combined, FIG. 9 is a cross-sectional view of the "B" part of FIG. 3, FIG. 10 is a cross-sectional view of the "C" part of FIG. 3, and FIG. 11 is a cross-sectional view of the "D" part of FIG.

1 to 11, an assembly-type reinforcement injection device according to an embodiment of the present invention includes a steel pipe 100, an injection pipe 200, and a connecting member 300.

The steel pipe 100 is installed in the perforated hole 10 of the ground, and is formed separately in a plurality. The steel pipe 100 is fitted to both sides of the connection member 300, respectively.

A tip bracket 110 is provided in the steel pipe 100 located at the most tip of the steel pipes 100. The tip bracket 110 is formed to correspond to the inlet of the steel pipe 100

An end cap 120 may be provided on the steel pipe 100 located at the lowermost part of the steel pipe 100. End cap 120 is formed in a conical shape protruding above the center.

The injection pipe 200 is inserted into the inside of the steel pipe 100 and is formed separately in a plurality. The injection pipe 200 is inserted into and coupled to the connecting member 300.

The injection pipe 200 includes a first injection pipe 210 extending only from the steel pipe 100 to the entry-side connecting member 300 of the first chamber 22, and the second chamber 24 in the steel pipe 100. The second injection pipe 220 extending only to the entry-side connecting member 300 of and a third injection pipe 230 extending only from the steel pipe 100 to the entry-side connecting member 300 of the third chamber 26 ), and a fourth injection pipe 240 extending only from the steel pipe 100 to the entry-side connecting member 300 of the fourth chamber 28.

The first injection pipe 210 is formed to extend only to the entry-side connecting member 300 of the first chamber 22, so that a reinforcing material is injected into the first chamber 22 and through the first injection hole 130 10) It is discharged into the hole and filled in the inner space of the corresponding position of the perforated hole 10 to reinforce the ground.

The second injection pipe 220 is formed to extend only to the entry-side connecting member 300 of the second chamber 24, so that a reinforcing material is injected into the second chamber 24, and a perforation hole is formed through the second injection hole 130. 10) It is discharged into the hole and filled in the inner space of the corresponding position of the perforated hole 10 to reinforce the ground.

The third injection pipe 230 is formed to extend only to the entry-side connection member 300 of the third chamber 26, so that a reinforcing material is injected into the third chamber 26, and a perforation hole ( 10) It is discharged into the hole and filled in the inner space of the corresponding position of the perforated hole 10 to reinforce the ground.

The fourth injection pipe 240 is formed to extend only to the entry-side connecting member 300 of the fourth chamber 28, and thus, a reinforcing material is injected into the fourth chamber 28, and through the fourth injection hole 130 10) It is discharged into the hole and filled in the inner space of the corresponding location of the perforated hole 10 to reinforce the ground.

The connecting member 300 is a configuration in which the steel pipe 100 and the injection pipe 200 are detachably inserted and installed to connect the steel pipe 100 and the injection pipe 200, respectively.

The connecting member 300 is formed through the body portion 310 interconnecting the steel pipe 100 and the neighboring steel pipe 100 in the length direction of the body portion 310 so that the injection pipe 200 is installed. It includes a plurality of communication hole portions 320 and a seating groove portion 330 formed in the body portion 310 so that the steel pipe 100 is installed.

The radial depth of the seating groove 330 is characterized in that it corresponds to the thickness of the steel pipe 100.

When the injection tube 200 is inserted from both sides, the communication hole 320 may include locking protrusions 322 formed on both sides to maintain a set interval in the longitudinal direction.

It is preferable that the lengthwise spacing of the locking projection 322 is formed larger than the diameter of the discharge passage 410 through which the expanding material is discharged, which will be described later.

The injection pipe 200 is sequentially connected only to the entry side of the communication hole 320 so as to supply a reinforcing material to the chamber 20 formed between one connecting member 300 and the other connecting member 300, respectively. It is characterized by being.

The steel pipe 100 is shown to be provided with five in this embodiment, but after each inserted into the seating groove 330 of the connecting member 300, welding around the circumference of the steel pipe 100 and the connection member 300 Are fixed to each other through

In this way, it is preferable to form the outer diameter of the steel pipe 100 and the outer diameter of the body portion 310 of the connecting member 300 to be the same in order to maintain the sense of unity of the device.

The inner space of the steel pipe 100 disposed between the connecting members 300 corresponds to the inner space of each chamber 20.

When the reinforcing material is injected into one of the chambers 20, the communication hole 320 is provided in the closing member 340 to prevent the reinforcing material from being moved and injected into the other chamber 20 through the exit-side connecting member 300. Blocked by

The closing member 340 is formed to protrude from both sides of the fitting portion 342 that is fitted into the communication hole portion 320 and the fitting portion 342 to be hooked on the locking jaw portion 322 provided in the red hole portion 320 It includes a pair of separation prevention protrusions 344.

The detachable protrusion 344 may include an inclined entrance portion 346 so as to protrude toward the longitudinal direction.

The inclined inlet portion 346 protrudes convexly above the center portion, and is formed to be bent in an arc shape from the center portion in the radial direction, and is closed by the locking jaw portion 322 on one side of the communication hole portion 320 having a narrow radius. By passing through and being caught by the elastic restoring force in the locking projection 322 on the other side, it is mounted on the communication hole 320 in a state in which movement in the longitudinal direction is prevented.

One of the communication hole parts 320 is provided with a supply pipe 400 to supply the expansion material. A discharge passage 410 may be formed in the communication hole 420 to which the supply pipe 400 is connected so that the expanding material is discharged to the outside.

The discharge passage 410 is formed in a radially outward direction perpendicular to the communication hole 320 positioned between the one locking projection 322 and the other locking projection 344.

An expansion member 420 is provided on the outside of the steel pipe 100 and is expanded by the expansion material discharged from the discharge passage 410 to partition each section.

The expansion member 420 includes an expansion sheet.

The expansion member 420 is made of a material that has flexible ductility and is not easily torn.

A sealing member 350 is installed in the communication hole part 320 to seal the injection pipe 200 and the supply pipe 400 at the locking projection 322 of the communication hole part 320.

The sealing member 350 may be formed in a rectangular cross-sectional shape. Of course, the sealing member 350 may have various cross-sectional shapes.

The communication hole 320 may be provided with a blocking cap member 360 blocking the path of the supply pipe 400.

The blocking cap member 360 is formed in the form of a stopper, and is coupled and mounted from the communication hole 320 to the locking projection 322.

The blocking cap member 360 is formed larger than the diameter of the coupling portion 362 inserted into the communication hole portion 320 and the communication hole portion 320 in contact with the coupling portion 362 to increase the entrance portion of the communication hole portion 320. It includes a head 364 to block.

A thread is formed around the coupling part 362 to be fastened to and coupled to a screw groove formed on the inner circumferential surface of the communication hole part 320.

The steel pipe 100 is formed with a spray hole 130 communicating to the outside.

The injection hole 130 may be provided with a check member 500 that prevents the reinforcing material sprayed outward from flowing backward and flowing into the steel pipe 100.

The check member 500 is provided on the inner circumferential surface of the injection hole 130 and is provided on the inner circumferential surface of the steel pipe 100 and is provided on the inner circumferential surface of the body portion 510 extending from the inside to the outside, and It includes an inner engaging portion 520, which is provided at the outer end of the body portion 510, and an outer engaging portion 530 that is mounted to the outer peripheral surface of the steel pipe 100.

A screw member 600 for installation on a slope including a slope or an incision may be further provided at the tip of the steel pipe 100.

The screw member 600 is separately manufactured, inserted and installed around the tip-side steel pipe 100, and fixed around the steel pipe 100 through welding.

At this time, the screw member 600 is installed through a support plate member (not shown) that is inserted into the perforation hole 100 on the slope including the inclined or incised paper, and is in contact with the ground, and the nut member is inserted into the thread of the screw member 600 (Not shown) is concluded.

In this way, the screw member 600 pressurizes the support plate member installed on the ground by the nut member and operates so that it adheres firmly to the ground, so that the reinforcing material is injected into the perforated hole 10 through the injection pipe 200 so that the adhered ground is tight. It is reinforced so that it can play a role of preventing the loss and collapse of the ground, such as an incision or a slope due to the flow of the steel pipe 100.

Hereinafter, with reference to the accompanying drawings to look at the operation and effect of the assembly-type reinforcement injection device according to an embodiment of the present invention.

The expansion member 420 is expanded and partitioned in the drilling hole 10 of the ground, and the state of reinforcing the drilling hole 10 through injection of a reinforcing material is examined.

First, when the expansion material is injected through the supply pipe 400, the expansion member 420 is expanded by discharging the expansion material from the communication hole 320 of the connection member 300 through the discharge passage 410, and the hole 10 ), so that the outer section of each chamber 20 is separated by contacting the inner circumferential surface.

Subsequently, when the reinforcing material is injected through the first injection pipe 210, the reinforcing material flows into the first chamber 22 of the steel pipe 100 disposed between the first connecting member 300 and the second connecting member 300. It is injected into the perforation hole 10 through the check member 500 installed in the injection hole 130 to reinforce the ground.

Then, when the reinforcing material is injected through the second injection pipe 220, the reinforcing material is in the second chamber 24 of the steel pipe 100 disposed between the second connecting member 300 and the third connecting member 300. It is introduced into the perforation hole 10 through the check member 500 installed in the injection hole 130 to reinforce the ground.

In addition, when the reinforcing material is injected through the third injection pipe 230, the reinforcing material flows into the third chamber 26 of the steel pipe 100 disposed between the third connecting member 300 and the fourth connecting member 300. It is injected into the perforation hole 10 through the check member 500 installed in the injection hole 130 to reinforce the ground.

And, when the reinforcing material is injected through the fourth injection pipe 240, the reinforcing material is introduced into the fourth chamber 28 of the steel pipe 100 disposed at the end side of the fourth connecting member 300, and the injection hole 130 It is injected into the perforated hole 10 through the check member 500 installed in to reinforce the ground.

Accordingly, the assembly-type reinforcing material injection device according to an embodiment of the present invention separates steel pipes, injection pipes, and supply pipes according to sections, and combines a plurality of separated steel pipes using a connection member and at the same time through a connection member. By connecting a plurality of injection pipes, reinforcing material is injected into the perforated hole through each chamber, and the expansion material is supplied to the expansion member through the connecting member to expand. If the connecting member is manufactured as one type, it is commonly used in each chamber section. It has the effect of being able to.

In addition, in the present invention, sealing is achieved by simply inserting the injection pipe and the supply pipe into the connection member through the sealing member, so that the airtightness and assembling property of the pipe connection portion can be formed.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is only illustrative, and those of ordinary skill in the field to which the technology pertains, various modifications and other equivalent embodiments are possible. I will understand.

Therefore, the true technical protection scope of the present invention should be determined by the following claims.

10: drilling hole 20: chamber
22: first chamber 24: second chamber
26: third chamber 28: fourth chamber
100: steel pipe 110: end bracket
120: end cap 130: spray hole
200: injection pipe 210: first injection pipe
220: 2nd injection pipe 230: 3rd injection pipe
240: fourth injection pipe 300: connecting member
310: body part 320: communication hole part
322: locking jaw portion 330: seating groove portion
340: finishing member 342: fitting portion
344: departure prevention protrusion 346: inclined entrance
350: sealing member 360: blocking cap member
400: supply pipe 410: discharge passage
420: expansion member 500: check member
510: body portion 520: inner engaging portion
530: outer locking part 600: screw member

Claims (13)

A steel pipe installed in the ground and formed separately in a plurality;
An injection pipe inserted into the inside of the steel pipe and separately formed in a plurality; And
A connection member in which the steel pipe and the injection pipe are detachably inserted and installed to connect the steel pipe and the injection pipe;
Assembly type reinforcing material injection device comprising a.
The method of claim 1,
The steel pipe located at the most tip of the steel pipes is provided with a tip bracket,
Assembly type reinforcement injection device, characterized in that the end cap is provided on the steel pipe located at the lowermost portion of the steel pipes.
The method of claim 1,
The connecting member,
A body part interconnecting the steel pipe and the neighboring steel pipes;
A plurality of communication holes formed through the body portion in the longitudinal direction so that the injection tube is installed; And
A seating groove formed in the body portion so that the steel pipe is installed;
Assembly type reinforcing material injection device comprising a.
The method of claim 2,
Assembly type reinforcement injection device, characterized in that the radial depth of the seating groove corresponds to the thickness of the steel pipe.
The method of claim 3,
The communication hole portion assembly type reinforcing material injection device, characterized in that when the injection tube is inserted from both sides, each of the locking projections formed on both sides to maintain a set distance in the longitudinal direction.
The method of claim 3,
The injection pipe is an assembly type reinforcement injection device, characterized in that it is sequentially connected only to the entry side portion of the communication hole so as to supply the reinforcing material to a chamber formed between one of the connecting member and the other connecting member.
The method of claim 3,
When a reinforcing material is injected into one of the chambers, the communication hole is blocked by a closing member so as to prevent the reinforcing material from being moved and injected into another chamber through the connecting member.
The method of claim 7,
The closing member,
A fitting portion fitted to the communication hole; And
A pair of detachment prevention protrusions protruding from both sides of the fitting portion and being caught on the locking projection provided in the light red hole;
Assembly type reinforcing material injection device comprising a.
The method of claim 3,
Any one of the communication holes is provided with a supply pipe to supply an expanding material,
A discharge passage is formed in the communication hole to which the supply pipe is connected so that the expanding material is discharged to the outside,
An assembly type reinforcing material injection device, characterized in that an expansion member is provided outside the steel pipe and is expanded by the expansion material discharged from the discharge passage to divide each section.
The method of claim 9,
An assembly type reinforcement injection device, characterized in that a sealing member is installed in the communication hole to seal between the injection pipe and the supply pipe.
The method of claim 5,
Assembly type reinforcing material injection device, characterized in that the communication hole portion is provided with a blocking cap member for blocking the path of the supply pipe.
The method of claim 1 or 3,
The steel pipe is formed with a spray hole communicating to the outside,
The assembly type reinforcing material injection device, characterized in that the injection hole is provided with a check member for preventing the reinforcing material sprayed outward from flowing backward and flowing into the inside of the steel pipe.
The method of claim 1 or 3,
Assembly type reinforcing material injection device, characterized in that further provided with a screw member for installation on a slope including a slope or an incision at the tip of the steel pipe.

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