KR100999942B1 - Internal line up clamp device of steel pipes and pipe line connecting method in construction site - Google Patents

Abstract

PURPOSE: An interior shaping apparatus for steel pipes and an automatic in-situ connection method for steel pipes using the same are provided to implement easy transfer of the apparatus and simple butt joint work of steel pipes because the shaping apparatus has a bendable structure. CONSTITUTION: An interior shaping apparatus for steel pipes comprises a center frame(110), two side shaping devices(130), a back supporting device(170), a main body(150), and a plurality of driving parts. The two side shaping devices are installed on the circumference of the center frame and contact the interior surface of two steel pipes to grip the steel pipes. The steel pipe connectors are shaped to be identical. The back supporting device is arranged in the circumference of the center frame between the two side shaping devices, and pressed onto the interior surface of the connection part of the two steel pipes in order to support welding on the exterior surface of the steel pipes. The main body is installed in the center frame to support the side shaping devices and the back supporting device. The driving parts are provided in the main body in order to contract and expand the back supporting device and the side shaping devices.

Description

Internal line up clamp device of steel pipes and pipe line connecting method in construction site}

The present invention relates to a steel pipe site construction connection method for connecting the steel pipes used for piping, such as water, sewage pipe, gas pipe, oil pipe, general water pipe.

Applicant has developed and applied for a patent for 'Steel Pipe Construction Method' to improve the workability, economy and safety by automatically conducting piping and welding when constructing large steel pipes of 600mm or more. It was patented under the registration number 10-0440555.

Subsequently, the Applicant separates the outer welder from the steel pipe forming machine, and proceeds with the steel pipe construction by using the forming machine and the outer welder separately, thereby greatly reducing work preparation time, construction time, cleanup time, and the like. The company has applied for a separate construction by the organization, secured the expertise of construction, and developed a 'steel pipe construction method' that can achieve better construction performance, and applied for a patent. have.

The applicant's patented inventions have the effect of greatly improving workability, economical efficiency, safety, etc. by automatically performing pipe installation work and welding connection work during the construction of large steel pipes.

However, including the applicant's patented inventions, conventionally, after performing the external shaping of the steel pipe, there is a problem in simplifying the method of connecting the steel pipe construction by two welding operations because the welding of the outer surface and the inner surface of the steel pipe connecting portion, respectively.

In particular, there is a need to develop a technology that can simplify the welding work as a whole while applying to the butt steel pipe connection method for connecting both steel pipes to each other.

In addition, unlike other countries, Korea has many construction factors for the construction of curved pipes. Therefore, the technology is required to perform the steel pipe connection work while the equipment moves easily in the straight pipe and the curved pipe.

The present invention has been made in order to solve the above problems, in the steel pipe butt weld connection section, inside the steel pipe so that the ease of construction can be improved to facilitate the movement of the internal pipe forming device in the straight pipe portion as well as the curved pipe portion An object of the present invention is to provide an orthopedic device and an automatic connection method for steel pipe construction using the same.

In addition, the present invention, by using the rotary plate to be configured to enable all the lifting rods to simultaneously lift up and down, the overall lifting rods can be raised and lowered uniformly, as well as maximize the lifting stroke, as a whole can be compact configuration It is an object of the present invention to provide a steel pipe internal forming apparatus capable of realizing an efficient driving unit and an automatic connection method for steel pipe field construction using the same.

In addition, the present invention is the steel pipe internal shaping device to hold the steel pipe inside the gripping state and to arrange the other steel pipe with the lifting equipment after the gripping and back support operation is made to increase the convenience and efficiency of the steel pipe connection work An object of the present invention is to provide an automatic connection method for a steel pipe and a site construction using the same.

Steel pipe internal forming apparatus according to the present invention for realizing the above object, the center frame is installed long in the longitudinal direction; Two shaping devices provided around the center frame to be in close contact with inner surfaces of both steel pipes, and to hold a gripping function, and to form steel pipe connections to coincide with each other; A back support device which is provided around the center frame between both forming apparatuses and is in close contact with the inner surface of the connecting portion of both steel pipes to assist welding of the steel pipe outer surface; A main body installed at the center frame to support both the shaping device and the back supporting device; And a plurality of driving units provided in the main body to drive both the shaping device and the back supporting device to contract and expand with respect to the inner surface of the steel pipe.

At least one drive unit of the plurality of drive units, the fixed body formed of a ring-shaped body structure supported on the main body portion, a rotating plate which is located in the center of the fixed body rotatably supported by the center frame, the fixed body An actuator connected to the rotating plate in a supported state to rotate the rotating plate forward and reverse, a lifting rod disposed radially in the fixed body and linearly moving in a radial direction, and connected between the lifting rod and the rotating plate. It is characterized by including a transmission link.

Both ends of the center frame are provided with a traveling device provided with wheels for traveling inside the steel pipe, and the main frame and the traveling device are installed to be connected by a joint to allow bending of the center frame. Can be configured.

Alternatively, the main body may have a configuration in which a traveling device having wheels is provided at both sides with respect to a portion where both the shaping device and the back support device are installed.

Both the forming device is provided with a first forming device and the second forming device with the back support device in between, it is preferable that the roller is provided in the forming shoe that is in close contact with the inner surface of the steel pipe in each forming device.

At this time, the orthopedic shoe of the first shaping device is arranged so that the roller can travel in the longitudinal direction of the steel pipe, the second orthogonal shoe is preferably arranged so that the roller can travel in the circumferential direction of the steel pipe. .

Preferably, the driving units of both the shaping unit and the back support unit are configured to operate by hydraulic pressure, and the main body unit is provided with hydraulic equipment for providing hydraulic pressure to the driving unit.

The back support device is divided into a predetermined length in the circumferential direction and moved to the left and right directions by the drive unit, a plurality of support plates for contracting or expanding to implement a support operation, and each supporting rod connected to the end of each lifting rod of the drive unit It is preferable to include a supporting support block for supporting the plate to be slidable in the longitudinal direction of the steel pipe, and an elastic member provided between each supporting plate and the supporting support block to provide an elastic force to the supporting plate.

Next, the steel pipe field construction automatic connection method using the steel pipe internal forming apparatus according to the present invention for realizing the above problems, the steel pipe chamfer to chamfer the steel pipe connection portion of each steel pipe so as to connect the steel pipes to be constructed at the steel pipe construction site Steps; A steel pipe arrangement step of arranging at least one or more steel pipes (hereinafter referred to as 'first steel pipes') among steel pipes processed in the steel pipe chamfering step on a steel pipe construction site; A first gripping step of holding the first steel pipe by expanding the first shaping device among the two shaping devices by inserting the steel pipe internal shaping device as described above into the first steel pipe of the steel pipe arrangement step; After the first gripping step, the steel pipes (hereinafter referred to as 'second steel pipes') to be connected to the first steel pipes processed in the steel pipe chamfer step are arranged in a line with the first steel pipes in a lifted state by using lifting equipment. Butt alignment step; A second gripping step of holding the second steel pipe by expanding the second shaping device located inside the second steel pipe, after the alignment step; A back supporting step of operating the back supporting device after the second gripping step to expand the supporting plate so that the supporting plates of the back supporting device are in close contact with the inner surface of the connection portion between the first steel pipe and the second steel pipe; A steel pipe outer surface automatic welding device is mounted around the first steel pipe or the second steel pipe, and after the back support step, the outer surface welding step of automatically welding the outer surface of the steel pipe connecting portion in the circumferential direction using the steel pipe outer surface automatic welding device It features.

In the external welding step, it is preferable to install a welding house that can protect the interior around the steel pipe connecting portion before the automatic welding of the outer surface of the steel pipe connecting portion, and then perform automatic welding on the outer surface.

In the outer surface welding step, when welding the outer surface of the steel pipe using the automatic pipe outer surface welding device, welding the steel pipe outer surface connecting portion while moving 180 degrees in the left and right lower or upper direction sequentially from the highest point or the lowest point of the steel pipe connection portion It is preferable.

In the outer welding step, when welding the outer surface of the steel pipe connecting portion with a plurality of passes by the automatic pipe outer surface welding device, when one pass or more welding around the outer surface of the steel pipe connecting portion with the automatic steel pipe outer surface welding device, the steel pipe outer surface automatic welding The apparatus continuously welds the outer circumference of the steel pipe connecting portion, and the steel pipe internal forming apparatus moves to the next steel pipe connecting portion, and then sequentially proceeds with the first gripping step, the butt alignment step, the second gripping step, and the back supporting step. It is preferable.

The main problem solving means of the present invention as described above, will be described in more detail and clearly through examples such as 'details for the implementation of the invention', or the accompanying 'drawings' to be described below, wherein In addition to the main problem solving means as described above, various problem solving means according to the present invention will be further presented and described.

Steel pipe internal forming apparatus according to the present invention and the steel pipe construction site connection method using the same has the following effects.

According to the present invention, since the internal forming device of the steel pipe is configured to be bendable or the length of the equipment is reduced to a radius, the equipment can be easily moved in a country such as Korea with a large curved portion, so that the butt connection work of the steel pipe is easy. There is an effect that can be carried out.

The present invention is configured to be able to contract and expand while lifting the lifting rod by using the rotary plate, so that all the lifting rods are lifted uniformly as a whole to obtain a precise shaping effect close to the origin, as well as the back support operation of the steel pipe connection. It can be stably realized, and accordingly, there is an effect of improving the welding quality of the steel pipe connection portion.

In addition, the present invention is configured to enable the lifting operation by the rotating plate drive to maximize the stroke of the lifting rod in a relatively narrow space, and can be compact in overall configuration can reduce the overall length of the equipment It is possible to implement a more efficient equipment, such as.

In addition, the present invention is configured to hold and back support operation after aligning the other steel pipe with the lifting equipment in the state in which the steel pipe internal forming apparatus gripping one steel pipe has the effect of increasing the convenience and efficiency of the steel pipe connection work have.

In addition to the effects as described above, the present invention has the effect of improving the shaping strength and precision by shaping the steel pipe using a hydraulic pressure rather than pneumatic.

In addition, the present invention, the steel pipe internal shaping device, including the wired adjustment is configured to enable wireless control, there is an effect that can maximize the convenience of the steel pipe connection construction work when configured by mounting the hydraulic equipment directly on the equipment.

In addition, the present invention, when configured to drive both the shaping device and the back support device separately, can be set to a variety of work order according to the steel pipe connection construction conditions, there is an effect that can increase the convenience of the steel pipe connection work.

In addition, the present invention, when both the forming apparatus is provided with a roller orthogonal to each other, there is an effect that can be finely adjusted in the circumferential direction as well as the forward and backward movement of the equipment and can also perform the stopper function.

As described above, the present invention can be widely applied to water, sewage pipes, gas pipes, oil pipes, general water pipes, and the like, and can be widely applied to general earth and sand sections or temporary facility sections regardless of site conditions.

1 to 10 are views showing a steel pipe internal forming apparatus according to an embodiment of the present invention,
1 is an overall side view,
2 is a whole side internal view,
3 is a front view showing a traveling device,
4 is a front view showing the solenoid valve arrangement as viewed in the direction AA of FIG. 2;
Figure 5 is a detailed side view showing both the shaping device, the white supporter, including the body portion,
6 is a front exterior view showing a driving unit of both the shaping device and the white support device;
7 and 8 are a side view and a front view showing the drive structure of both the shaping device, FIG. 7 is a state diagram at the time of contraction, FIG. 8 is a state diagram at the time of expansion,
9 and 10 are a side view and a detailed view showing the operating state of the white support device, Figure 9 is a state diagram at the time of contraction, Figure 10 is a state diagram at the time of expansion,
11 is a view illustrating a state in which a steel pipe internal forming apparatus according to an embodiment of the present invention is driving a curved pipe part.
12 to 13 are views showing a steel pipe internal forming apparatus according to another embodiment of the present invention,
12 is a side configuration diagram,
13 is a front configuration diagram.
14 to 18 is a view showing a steel pipe outer surface automatic welding apparatus according to the present invention,
14 to 16 are views showing a steel pipe outer surface automatic welding apparatus according to the first embodiment,
17 to 18 are diagrams showing the steel pipe outer surface automatic welding apparatus according to the second embodiment.
19 to 21 are views showing a welding house according to the present invention,
19 is a perspective view,
20A is a front view, FIG. 20B is a side configuration view, FIG. 20C is a plan view,
21 is a detailed view showing the configuration of the width adjusting device of the welding house.
22 to 29 are views showing the steel pipe construction method in accordance with the present invention in order.

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

Steel pipe field construction automatic connection method in the present invention, beveler (cf. Fig. 22) to chamfer the steel pipe connection largely enter the steel pipe inside the steel pipe internal forming device for connecting to form both steel pipe connecting parts (Fig. 1 to 13) ), A steel pipe outer surface automatic welding device (Figs. 14 to 18) to implement the circumferential welding work on the outer surface of the steel pipe using the automatic welding carriage, the welding house (19 to 21) that can be used as needed during the steel pipe outer surface welding work Construction).

The apparatuses used in the method for automatically connecting the steel pipe construction according to the present invention will be described with reference to the accompanying drawings, respectively, and the method for automatically connecting the steel pipe construction according to the present invention will be described with reference to FIGS. 22 to 29.

For reference, the same reference numerals are given to the drawings, and the repeated description thereof will be omitted.

First, the steel pipe internal forming apparatus 100 according to the present invention will be described.

In describing the steel pipe internal forming apparatus according to the present invention, the description will be made mainly based on two embodiments. 1 to 10 are views showing a first embodiment of the steel pipe internal shaping device, Figures 11 to 13 are views showing a second embodiment of the steel pipe internal shaping device.

A first embodiment of a steel pipe internal forming apparatus according to the present invention will be described.

1 and 2 are the overall side view and internal configuration of the side, FIG. 3 is a structure of the traveling device, FIG. 4 is a solenoid valve arrangement structure, FIG. Front view showing the driving portions of both the shaping device and the white support device, Figures 7 and 8 is a state diagram at the time of contraction and expansion of both shaping device, Figures 9 and 10 are the state diagram at the time of contraction and expansion of the white support device, 11 is a reference diagram showing a curved driving state diagram.

As illustrated in these drawings, the steel pipe internal forming apparatus 100 according to the first embodiment of the present invention includes a center frame 110 installed in a longitudinal direction and a steel pipe provided on both sides of the center frame 110. (P) is provided around the center of the traveling device 120 and the traveling device 120 is formed so as to be in close contact with the inner surface of both steel pipes to perform a gripping function, and at the same time form a steel pipe connection portion close to the source The back support device 170 which is in close contact with the inner surface of the connecting portion of both steel pipes between the two forming apparatuses 130 and the both forming apparatuses 130 to assist welding of the outer surface of the steel pipe, and the center frame 110 are installed on both sides It comprises a body portion 150 for supporting the device 130 and the back support device 170.

The main components of the steel pipe internal forming apparatus 100 configured as described above will be described in detail.

First, referring to FIG. 2, the center frame 110 is configured to be long in the longitudinal direction of the steel pipe so that the traveling device 120, the shaping device 130, the back support device 170, and the like may be installed.

The center frame 110 may be formed in an elongated shaft (or cylinder) structure, but may be configured in combination with the traveling device 120, the shaping device 130, and the like, as necessary. That is, the center frame 110 is configured to have a function of supporting all the devices operatively connected as well as integrally connecting the entire devices constituting the steel pipe internal forming device (100).

In particular, the center frame 110 is provided with a traveling device 120 at both ends, and is connected to the joint (joint structure) 115 between a portion where the traveling device 120 is installed and the main body 150. It has a structure. 11, the structure of the joint 115 may be such that the center frame 110 is bent around the joint 115 when the steel pipe internal forming apparatus 100 according to the present invention passes through the curved pipe portion, as illustrated in FIG. 11. Of course, the straight pipe portion of the bent pipe portion is easily configured to be able to perform the steel pipe connection work.

Next, the traveling device 120 is configured such that the steel pipe internal shaping device 100 of the present invention may travel along the inner surface of the steel pipe. Referring to FIGS. 1 to 3, a unit travel set having a tricycle structure may be provided. It is installed on both ends of the center frame 110, respectively.

The unit traveling unit constituting the traveling device 120 will be described.

The unit travel unit is provided with a travel support 121 in a three way around the center frame 110, and the wheel 123 is rotated in accordance with the inner surface of the steel pipe at the end of each travel support 121. In this case, the at least one wheel 123 may be configured to rotate by an electric motor or the like so that automatic driving is possible. The electric motor may be installed at the center frame 110 so as to transmit driving force to the wheel 123 by a power transmission means such as a belt or a chain. Herein, the configuration of the electric motor and the power transmission means can be easily arranged and configured by those skilled in the art to which the present invention pertains.

The unit running set is configured such that the driving support 121 can be folded and unfolded about the center frame 110. To this end, a fixed support 125 (see FIG. 2) installed around the center frame 110 to which the driving support 121 is connected, and a circumference of the center frame 110 at a position spaced apart from the fixed support 125. The movable support 127, which is provided to be movable in the axial direction, the spreading support 128 connected to the driving support 121 in the movable support 127, the center frame 110 is disposed around the movable support 127 Is moved between the fixed support member 125 and the moving support member 127 around the centering frame 110 to expand the actuator 126 to determine the unfolding position of the travel support 121 by moving in the axial direction. It consists of an elastic body 124 that pushes the support 127 in the direction of the unfolding actuator 126.

The connecting portion of the driving support 121 and the fixing support 125, the extending support 128 and the connecting support 121 and the connecting portion, the connecting support 128 and the connecting portion of the moving support 127 are all linked It is preferred to be connected freely.

The spreading actuator 126 is configured to move the moving support 127 in the axial direction while moving forward and backward by holding the handle and rotating the screw in a state in which the screw method is coupled to the center frame 110. Of course, when the unfolding actuator 126 is retracted, the movable support 127 also moves in the direction in which the unfolding actuator 126 is moved by the elastic force of the elastic body 124.

On the other hand, in the above described the embodiment to enable the spreading and folding operation of the traveling device 120 by using the spreading actuator 126 and the elastic body 124, a hydraulic actuator, such as a hydraulic cylinder, if necessary, It is also possible to configure so that the moving support body 127 can be automatically moved using the well-known actuator which can provide linear motion force, such as an electric linear actuator.

Next, both the shaping device 130 and the back support device 170 may be configured to have the same driving structure, and the center of the driving structure of one of the shaping device of the two shaping device 130 will be described, and the other Repeated description of the driving structure of the shaping device and the back support device 170 will be omitted.

Both the shaping device 130 and the back support device 170 is preferably driven by hydraulic pressure (or pneumatic), Figure 4 is a configuration in which three solenoid valves 155 for controlling the hydraulic pressure provided to each device is arranged Shows. Two of the three solenoid valves 155 control each of the orthopedic devices 130, and one is configured to control the back support device 170.

The three solenoid valves 155 are preferably installed symmetrically around the center frame 110 in the circumferential portion thereof, and the valve covers 151 (see FIG. 5) are covered from the outside to protect the valves 155. It is preferable to be configured to.

Referring now to FIGS. 5 to 8, common components will be described based on the drive structures (hereinafter, referred to as “drive units”) of both the shaping device 130 and the back support device 170.

The driving unit 140 is formed of a ring-shaped body structure, the fixed body 141 supported by the cover, the rotating plate 143 is located in the center of the fixed body 141 rotatably supported by the center frame 110, and fixed A hydraulic cylinder 145, which is an actuator connected to the rotating plate 143 in a state supported by the body 141 and forward and reverse rotating the rotating plate 143, is disposed in a radial structure within the fixed body 141 and has a radius. A lifting rod 147 linearly moving in the direction, and a transmission link 149 connected between the lifting rod 147 and the rotating plate 143.

Referring to FIG. 6, the fixing body 141 is formed with a rod hole 141a disposed in a radial structure such that the lifting rod 147 is inserted and linearly moved, and the hydraulic cylinder 145 is disposed at an inner diameter side thereof. The cylinder block 141b may be mounted to support it.

The rotating plate 143 is a part configured to simultaneously move the transmission link 149 connected thereto while rotating forward and reverse by the operation of the hydraulic cylinder 145, and the center frame 110 at the center of the fixing body 141. ) Is rotatably provided in a disk structure.

One hydraulic cylinder 145 may be installed to drive the rotating plate 143 in rotation, but two hydraulic cylinders 145 are symmetrical with each other so as to simultaneously provide a force in a 180-degree direction as in the drawing of this embodiment. It is desirable to be installed. This is to drive the rotary plate 143 at the same time in the 180 degree direction to provide a balanced force to the entire lifting rod 147 to achieve a smooth shaping operation and a back support operation. This hydraulic cylinder 145 is controlled by the solenoid valve 155 described above.

The elevating rod 147 is arranged to linearly move in the radial direction within the fixed body 141, which illustrates a structure in which sixteen elevating rods are disposed in the present embodiment. 5 and the like, in the shaping device 130, the shaping shoe 133 is mounted at the end of the lifting rod 147, and in the back support device 170, the supporting plate 177 is connected and mounted.

The transmission link 149 transmits a force to linearly move the lifting rod 147 while moving according to the rotational force of the rotating plate 143. As shown in FIG. 7, when the transmission link 149 is inclined with respect to the radial direction, the lifting rod 147 is in a descending state. As shown in FIG. 8, when the transmission link 149 is positioned coincident with the radial direction, the lifting rod is as follows. 147 rises.

As described above, the driving unit 140 rotates the rotating plate 143 in the counterclockwise direction as shown in FIG. 7 while the pair of hydraulic cylinders 145 are operated at the same time by the hydraulic control of the solenoid valve 155. The transmission link 149 connected to 143 moves counterclockwise along the rotating plate 143, where the lifting rod 147 is lowered inward of the fixing body 141.

On the contrary, when the rotary plate 143 is rotated clockwise as shown in FIG. 8 by the solenoid valve 155 and the pair of hydraulic cylinders 145, the transmission link 149 connected to the rotary plate 143 rotates the rotary plate 143. Therefore, the clockwise movement, the lifting rod 147 is raised while protruding in the outward direction of the fixed body 141.

As described above, the driving unit 140 may be equally applied to both the shaping device 130 and the back support device 170. As shown in FIG. 5, the first shaping device from the front side (right side) is shown. 130A, the back support apparatus 170, and the 2nd shaping | molding apparatus 130B are arrange | positioned in order.

In FIG. 5, the main body 150 is provided with a valve cover 151, a front cover 152, and a rear cover 153 that protect the solenoid valve 155 described above from the front, and each cover 151, 152, The 153 may be supported to be relatively rotatable by a bearing provided around the center frame 110.

In addition, the driving units 140 constituting the first shaping device 130A, the back supporting device 170, and the second shaping device 130B are installed between the front cover 152 and the rear cover 153. Connection between the first shaping device 130A and the back support device 170 and between the back support device 170 and the second shaping device 130B to connect and integrate the fixing bodies 141 of both drives 140. Body 157 is provided. The connection body 157 is preferably made of a ring-shaped structure.

Here, the connection body 157 between the first shaping device 130A and the back support device 170 is formed thicker than the connection body 157 between the back support device 170 and the second shaping device 130B. This is to ensure a space in which the hydraulic cylinder 145 on the back support device 170 can be disposed, and to facilitate the steel pipe connection work. This will be described together when describing the steel pipe construction method.

Meanwhile, as described above, the hydraulic cylinders 145 constituting the driving unit 140 of the first shaping device 130A, the back supporting device 170, and the second shaping device 130B have two hydraulic cylinders in one device. 145 is preferably provided.

5 to 8, the first shaping device 130A and the second shaping device 130B will be described. Both shaping devices 130A and 130B have the driving unit 140 described above, and each lifting rod 147. An orthopedic shoe 133 is installed at the end of the).

The orthopedic shoe 133 is in close contact with the inner surface of the steel pipe to hold the inner surface of the steel pipe (fixed to the inner surface), and when the two steel pipes are to be opposed to each other, so that the steel pipe connection can be made in a state in which step difference is minimized. It has a function of shaping close to the round, but in the embodiment of the present invention, the roller 135 is configured to be in close contact with the inner surface of the steel pipe.

That is, the shaping shoe 133 consists of a shoe body 134 installed at the end of the elevating rod 147 and a roller 135 rotatably installed at the shoe body 134. At this time, the roller 135 is preferably installed on both sides of the shoe body 134, respectively. The orthopedic shoe 133 according to the present invention is not necessarily limited to the configuration in which the roller 135 is installed, and if the structure can hold and mold the inner surface of the steel pipe, various modifications may be made depending on the implementation conditions. .

The first shaping device 130A and the second shaping device 130B provided with the shaping shoes 133 are configured to have different directions in which the shaping shoes 133 are disposed, which will be described with reference to FIG. 5.

The shaping shoe 133 of the 1st shaping | molding apparatus 130A has the structure arrange | positioned long in the longitudinal direction of a steel pipe, and the shaping shoe 133 of the 2nd shaping apparatus 130B has the structure arrange | positioned long in the circumferential direction of a steel pipe. Have Such arrangement configuration of the orthopedic shoes 133, the roller 135 of the orthopedic shoe 133 provided in the first shaping device 130A when the steel pipe internal forming apparatus according to the present invention, if necessary, forward and backward In order to use the roller 135 of the shaping shoe 133 with which the 2nd shaping | molding apparatus 130B was equipped when moving (rotating) in the circumferential direction (circumferential direction) of a steel pipe inside a steel pipe.

Of course, although the traveling device 120 is provided on both sides of the center frame 110, when using the rollers 135 provided on the orthopedic shoe 133, the position while moving the steel pipe internal forming device of the present invention finely Can be adjusted or moved. In addition, when the shaping shoe 133 of the first shaping device 130A and the second shaping device 130B is completely in contact with the inner surface of the steel pipe, the shaping shoe 133 of the second shaping device 130B restricts movement in the front-rear direction. In addition, in the circumferential direction, the shaping shoe 133 of the first shaping device 130A restricts movement, and each shaping shoe 133 can also perform a stopper function.

Next, the back supporting apparatus 170 will be described with reference to FIGS. 9 to 10.

The back support device 170 is a component part that supports the inside of the steel pipe connection part in a state where both steel pipes are butted with each other, so that welding can be performed outside the steel pipe connection part.

The back supporting apparatus 170 is configured to perform a supporting operation and a release operation while the plurality of supporting plates 177 divided into predetermined lengths in the circumferential direction move in the left and right directions by the driving unit 140. That is, during the supporting operation, the divided supporting plate 177 rises as a whole and is gathered in a circular band structure at both sides to support the inner joints of both steel pipes (see FIG. 10). The divided supporting plate 177 is configured to be released while being released on both sides as well as to be lowered (see FIG. 9).

In this case, the plurality of supporting plates 177 are preferably arranged in a staggered manner so that adjacent supporting plates 177 can move in opposite directions (left and right directions when viewed from the side).

The back supporting device 170 is provided with a supporting support block 173 at the end of each lifting rod 147 of the driving unit 140 to support each supporting plate 177 to be slidable in the longitudinal direction of the steel pipe, respectively. Between the supporting plate 177 and the supporting support block 173 is made of a configuration that is provided with an elastic member 176 to provide an elastic force to the supporting plate 177.

The supporting support block 173 is composed of a base portion 173a to which the lifting rod 147 is coupled and a sliding portion 173b to which the supporting plate 177 is slid to be provided on the upper surface of the base portion 173a. Can be.

Here, the sliding part 173b is provided with a sliding mechanism 174 between the supporting plate 177, the sliding mechanism 174 is a slide guide 174a fixed to the supporting support block 173, and the slide It is preferably made of a sliding block 174b which is linearly moved along the guide 174a and on which a supporting plate 177 is installed.

At both ends of the sliding part 173b, the support part 173c is configured to protrude upward (outward) so as to support the elastic member 176. On the contrary, the support 173c may not be protruded, and the sliding part 173b may be formed in a groove structure as a whole to support the elastic member 176 at both ends.

The supporting plate 177 is formed in an elongated plate shape and is disposed long in the circumferential direction, and the upper surface is formed with a curved surface that matches the inner radius of curvature of the steel pipe so as to be in close contact with the inner surface of the steel pipe. Of course, the supporting plate 177 may be configured to have a predetermined thickness as a whole so that both the upper and lower surfaces thereof have a curved structure.

The supporting plate 177 is preferably configured such that both ends 177a are formed to be inclined such that the supporting plates 177 may be opened or collected on both sides in a state where the mutually inclined surfaces are in close contact with other adjacent supporting plates 177.

The elastic member 176 may be installed between any one of both supporting parts 173c of the sliding part 173b and the sliding block 174b to provide an elastic force to the supporting plate 177.

That is, since the adjacent supporting plates 177 are configured to be moved in opposite directions, the elastic members 176 are also preferably configured to be alternately arranged in opposite directions about the respective supporting plates 177.

The elastic member 176 illustrated in the drawings of the present embodiment exemplifies a structure in which a plurality of coil springs are installed. However, the elastic member 176 is not limited thereto, and various elastic members known in the art may be provided if the supporting plate 177 is provided with an elastic force in a direction in which the supporting plate 177 is extended. 176) of course, it can be used.

When the lifting rod 147 is lowered by the operation of the driving unit 140, the back supporting apparatus 170 configured as described above is in a state in which the supporting plate 177 is lowered, so that the overall radius of the back supporting apparatus 170 is lower than that of the supporting operation (expansion). Becomes smaller. Accordingly, both ends 177a of the adjacent supporting plates 177 staggered with each other are pressed to the elastic members 176 while being pushed (sliding) from side to side by slanted contact.

On the contrary, when the lifting rod 147 is raised by the operation of the driving unit 140, the total radius formed by the supporting plates 177 is also increased, and the supporting plates 177 are collected by the elastic force of the elastic member 176. To form an overall band structure.

Therefore, the supporting plates 177 support the inner surface connections of both steel pipes in a state of gathering in a circular band structure, and in this state, the automatic pipe welding device can be automatically mounted on the outer surface of the steel pipe connecting parts.

A steel pipe internal forming apparatus according to a second embodiment of the present invention will be described with reference to FIGS. 12 to 14.

For reference, the same components as those in the first embodiment described above are denoted by the same reference numerals, and repeated description thereof will be omitted.

The steel pipe internal forming apparatus according to the second embodiment of the present invention includes a first shaping device 130A, a second shaping device 130B, a back support device 170, and the like including the driving unit 140 and the first embodiment described above. The configuration of the same is the same, but different configurations of some of the traveling device 120 'and the main body portion 150'.

That is, in the first embodiment, the traveling device 120 'is provided at both ends of the center frame 110, but in the second embodiment, the traveling device 120' is directly connected to the main body 150 '. In addition, the hydraulic unit 180 is integrally provided with the main body unit 150 '.

In the second embodiment, main components different from the first embodiment will be described.

First, a hydraulic pump 181 and a hydraulic tank 183 are installed in the main body 150 ′ inside the valve cover 151 provided with the solenoid valve 155. The hydraulic equipment 180 such as the solenoid valve 155, the hydraulic pump 181, and the hydraulic tank 183 installed inside the valve cover 151 is supported by the valve cover 151 and the front cover 152. Since it can be configured by various arrangements through, specific examples of the support structure is omitted.

As such, when the hydraulic pump 181 and the hydraulic tank 183 are directly configured on the main body 150 ′, the steel pipe connection construction work can be easily performed while moving the hydraulic pipes at the site of the steel pipe construction without separately arranging hydraulic equipment outside the steel pipe. can do.

In addition, when the control equipment (not shown) together with the hydraulic equipment 180 is installed in the main body 150 ', the steel pipe by operating the entire equipment according to the present invention only by operating the wired or wireless controller from the outside Connection construction work can be carried out.

Next, the traveling device 120 ′ is composed of a plurality of traveling supports 121 ′ and traveling rollers 135 arranged in a radial structure around the front cover 152 and the rear cover 153, respectively.

In FIG. 13, five pairs of the driving support 121 ′ and the wheels 123 are installed in the covers 152 and 153. In addition, the two pairs of travel supporters 121a positioned below may be configured to be disposed in the vertical direction unlike the other pairs of travel supporters 121b disposed in the radial direction. It is designed to be able to move while supporting the whole device more stably.

The other configuration may be the same as or similar to the configuration of the steel pipe internal forming apparatus of the first embodiment according to the present invention described above.

Next, with reference to Figures 14 to 18, the steel pipe outer surface automatic welding apparatus according to the present invention will be described.

14 to 16 is a view showing a steel pipe outer surface automatic welding device (portable mounting type) according to a first embodiment of the present invention, Figures 17 to 18 is a steel pipe outer surface automatic welding device according to a second embodiment of the present invention The figure which shows (a circular body mounting type).

14 to 16, a steel pipe outer surface automatic welding apparatus according to a first embodiment of the present invention will be described.

14 is a side view of the automatic welding machine outer surface, Figure 15 is a front view, Figure 16 is an overall view including the auxiliary equipment of the automatic welding machine steel outer surface.

The steel pipe outer surface automatic welding device 200 according to the first embodiment of the present invention, the running rail assembly 201 having a circular structure when closing so that it can be mounted around the steel pipe (P), the welding torch 260 is It is made of an automatic welding carriage 250 for performing automatic circumferential welding on the outer surface of the steel pipe connection while moving along the running rail 201 in the mounted state.

The traveling rail 201 is provided with a rail 203 mounted around the steel pipe P to allow the automatic welding carriage 250 to travel.

At this time, the rail 203 is configured to be divided into a plurality of bars to be mounted around the steel pipe, the rail clamp 205 is configured to be connected to the plurality of rails to be connected to each other in a circular ring structure. .

The inner surface of the rail 203 is composed of a plurality of spikes 207 are in close contact with the circumferential surface of the steel pipe is installed.

The automatic welding carriage 250 which realizes automatic welding to the steel pipe outer surface while moving the circumference of a steel pipe along this running rail 201 is demonstrated.

The automatic welding carriage 250 is largely a body portion 251, a traveling portion 253 coupled to the rail 203 at the lower portion of the body portion 251 and moving along the rail plate, and the body portion 251. It is composed of a torch clamp 265 is mounted to the front of the) is mounted to the welding torch 260 to weld to the steel pipe joint.

The body part 251 may be formed in a substantially hexahedral box structure, and outputs various control signals necessary for welding driving of the automatic welding carriage 250 and welding operation of the welding torch 260 therein. Preferably, a welding drive control unit (not shown) is provided.

That is, the welding drive control unit controls the driving of the automatic welding carriage 250 according to a preset welding control program, controls the left and right or up and down operation and the weaving operation of the welding torch 260, and also the welding wire supply speed and the like. It is configured to output and control operation control signals of various equipments required for welding operation such as welding machine power source and gas supply device.

The welding driving control unit, like a conventional controller, stores a welding control program set according to welding conditions and a signal for welding operation according to an operation signal input by an operator using information stored in the storage unit. It comprises a configuration including a central processing unit for calculating and outputting.

Of course, the welding drive control unit is preferably configured to be able to input the welding program or other information necessary for welding from an external computer, it is also preferably configured to be controlled according to the signal of the operation terminal to be described below.

The front of the body portion 251 is provided with a torch clamp 265 is connected to the welding drive control unit to the welding torch 260 is mounted.

The traveling part 253 includes two idler rollers 254 each having two body parts 251 at the lower side and coupled to both sides of the rail 203, and either one of the rails 203. A drive gear 256 (see FIG. 15) coupled to the gear teeth and a drive motor (not shown) provided inside the body 251 to drive the drive gear 256 to rotate.

Here, the idler roller 254 is preferably formed in a gear structure so as to rotate along the rail 203 in a state engaged with both gear teeth of the rail 203, the four corners of the body portion 251 Each one is preferably connected to each roller bracket 255 is installed.

The drive gear 256 is preferably located between the idler rollers 254 coupled to either side of the rail 203 (see FIG. 15), and the rail 203 and the drive gear 256 have a rack and pinion structure. It is preferred to have a structure coupled to each other.

On the other hand, the mounting lever 252 which is installed in front of the body portion 251, by spreading or narrowing any one of the idler roller 254 of the idler rollers 254 provided on both sides of the body portion 251, The automatic welding carriage 250 is configured to be detachable to the rail 203.

In addition, a blocking plate 257 may be additionally installed in front of the body portion 251. The blocking plate 257 is configured to minimize the influence on the traveling portion 253 when the welding torch 260 welds the steel pipe connection from the front side.

The welding torch 260 is a constituent part for welding the steel pipe connecting portion, and is welded in a state in which the welding torch 260 is located close to the steel pipe fitting in a state where it is mounted on the torch clamp 265 installed in front of the body portion 251. It is configured to be carried out.

The torch clamp 265 supports the welding torch 260 so that the welding torch 260 can be moved back and forth, left and right, or weaving by the welding driving control unit provided in the body part 251.

The torch clamp 265 and the welding torch 260 as described above are preferably configured such that a welding power source, a supply wire, a welding gas, and the like can be connected.

Steel pipe outer surface automatic welding device 200 as described above may be additionally provided with a variety of additional equipment (270).

The auxiliary equipment 270, as shown in Figure 16, including the automatic welding carriage 250, the main power drive unit 272 to provide power for driving the power and various control elements provided to the automatic welding device. In addition, a welding machine power source 273 and a welding machine auxiliary box 274 for providing welding power to the automatic welding carriage 250, a feeding device 275 for supplying a welding wire, a welding gas supply device, and the like are provided.

On the other hand, reference numeral 277 denotes an operation terminal capable of operating a welding operation by inputting a signal to the automatic welding carriage 250.

17 to 18, a steel pipe outer surface automatic welding apparatus according to a second embodiment of the present invention will be described.

For reference, in describing the steel pipe outer surface automatic welding device of the second embodiment of the present invention, the rest of the configuration except for the gripping device and the running rail may be configured in the same manner, and will be described with reference to the gripping device and the running rail related parts. The remaining components are given the same reference numerals as in the first embodiment in the drawings and the like, and the repeated description will be described.

17 is a side view of an automatic welding device for the outer surface of a steel pipe, and is a state diagram during welding of the steel pipe in an inclined construction section, and FIG. 18 is a front view of the automatic welding device for the outer surface of a steel pipe.

As illustrated in these drawings, the steel pipe outer surface automatic welding device 200A according to the second embodiment of the present invention includes a holding device 210 having a circular structure when closed to be mounted around the steel pipe P, Automatic welding to perform automatic circumference welding on the outer surface of the steel pipe connecting portion while moving along the traveling rail 240 while the traveling rail 240 provided on one side of the gripping device 210 and the welding torch 260 are mounted. It consists of a carriage 250.

First, the holding device 210 will be described.

When viewed from the side, the holding device 210 is composed of a plurality of mechanism devices, such as a locking device 230, a fixing device 233, between the two ring-shaped plate 212 as a whole, as shown in FIG.

The holding device 210 is a quarter having an upper body 215 having a semi-circular structure and rotatably connected to both ends of the upper body 215, and both ends of which are locked to each other as shown in FIG. 18. And shaped bodies 216 and 217.

That is, the upper body 215 is divided into a size of 1/2 in a circular structure, the quarter-shaped body (216, 217) is divided into a size of 1/4, so as to be assembled together to hold the circumference of the steel pipe It will form a circular structure as a whole. In addition, as illustrated in the drawings, the quarter-shaped bodies 216 and 217 may be divided again (1/8 size of the circular structure) to be configured as a three-stage grip structure from the upper center.

Referring to FIG. 17, the upper side of the upper body 215 is provided with a connection device 220 to lift or move the steel pipe outer surface automatic welding device 200A by using lifting equipment such as a crane.

The connecting device 220 is configured to be mounted around the steel pipe in a state in which the steel pipe outer surface automatic welding device 200A is inclined at the time of the construction of the slope section, as shown in FIG. The fixing plate 221 is provided in the upper portion, and the connecting plate 223 is erected vertically on the upper portion of the fixing plate 221 extending in the longitudinal direction of the steel pipe is disposed in the overall 'b' shaped structure.

In particular, the connecting plate 223 is formed in a plurality of connecting holes 224 are arranged in a row so as to properly select the connection portion with the lifting equipment, the slope of the steel pipe during lifting and mounting of the steel pipe automatic welding device 200A It is possible to adjust the inclined feed state according to.

In the drawings for referring to the present embodiment, the configuration of the connection hole 224 is illustrated, but the present invention is not limited thereto. If the structure can be connected to the lifting equipment, the structure may be changed to another structure such as a protruding ring.

In Fig. 17, reference numeral 225 denotes a connecting member such as a lifting rope connected from the lifting equipment.

The connection device 220 may be configured to be assembled by rotating in a direction opposite to the direction illustrated in the drawing (the hidden line direction in FIG. 17) as necessary. This is to loosen the bolt fastened between the fixing plate 221 or the connecting plate 223 with the structure of the holding device 210 connected thereto to rotate the connecting device 220 in the opposite direction, and then tighten the bolts again. Can be configured. Therefore, by changing the assembling direction of the connecting device 220 according to the inclination direction (left or right), it is possible to more easily work to mount or detach the steel pipe in the state in which the steel pipe outer surface automatic welding device 200A of the present invention is inclined. You lose.

Between the upper body 215 and the connecting portion of the quarter-shaped body (216, 217) when the holding device 210 is coupled to the circumference of the steel pipe (P), the quarter-shaped body (216, 217) again in the open state An opening and closing device 226 is provided to collect.

The opening and closing device 226 is composed of a hydraulic cylinder 227, is provided to be connected between the upper body 215 and both quarter-shaped body (216, 217). Of course, the hinge portion 228 is provided at the connection portion of the upper body 215 and the quarter-shaped bodies 216 and 217 so that the quarter-shaped bodies 216 and 217 can be rotated by the opening and closing device 226.

The mutually opposite ends of both quarter-shaped bodies 216 and 217 are provided with a locking device 230 to prevent opening when coupled to the steel pipe around. The locking pin 231 constituting the locking device 230 in the state in which the coupling portions of both quarter-shaped bodies 216 and 217 are coupled to each other engages the two quarter-shaped bodies 216 and 217 by the operation of the locking cylinder 232. It is configured so that the locking operation can be realized by engaging together in the part.

A plurality of fixing devices 233 for stably mounting the steel pipe outer surface automatic welding device 200A around the steel pipe P between the ring-shaped plates 212 in the holding device 210 are configured.

It is preferable that a plurality of fixing devices 233 are installed at regular intervals in the holding device 210, and the drawing illustrates a structure in which eight devices are installed. The fixing device 233 is provided with a fixed cylinder 234 which is operated by hydraulic pressure, the contact pad 235 is attached to the end of the cylinder 234 is configured to be in close contact with the outer surface of the steel pipe.

Next, the traveling rail 240 provided in the side surface of the holding device 210 is demonstrated.

The traveling rail 240 consists of the support plate 241 which protrudes cylindrically from the side surface of the holding device 210, and the rail plate 243 provided around this support plate 241. As shown in FIG.

Here, the support plate 241 and the rail plate 243 is divided into the upper body 215, the quarter-shaped body (216, 217) in the holding device 210 is configured, the rail plate 243 is For smooth movement of the automatic welding carriage 250 is preferably composed of a plate-shaped member formed with gear teeth on both sides.

Since the automatic welding carriage 250 for realizing automatic welding on the outer surface of the steel pipe while moving along the traveling rail 240 as described above can be configured in the same way as the automatic welding carriage of the automatic welding device outside the steel pipe of the first embodiment described above, Repeated description is omitted.

In addition, the steel pipe outer surface automatic welding device 200A of the second embodiment is also provided with various auxiliary equipment in the same manner as the steel pipe outer surface automatic welding device 200 of the first embodiment. However, in the second embodiment, the holding device 210 is configured, and it is preferable that a hydraulic device for providing pressure oil to the hydraulic operation element provided in the holding device 210 is further provided.

Additional equipment of the steel pipe outer surface automatic welding device (200) (200A) as described above may be configured to be stored or used in a state mounted in the welding house 400 to be described below.

Next, with reference to FIGS. 19 to 21, a welding house that can be used when welding the steel pipe connection using a steel pipe outer surface automatic welding device will be described.

19 to 21 are views for explaining the welding house, Figure 19 is a perspective view, Figure 20a is a front view, Figure 20b is a side configuration view, Figure 20c is a plan view, Figure 21 is a configuration of the width control device of the welding house Detailed view shown.

The welding house 400 according to the present invention uses a steel pipe outer surface automatic welding device 200 therein in a state in which the steel pipe P is installed on the outside of the connection part of the steel pipe as shown in FIG. 20B in the construction space. It is configured to perform welding of the external connection of the steel pipe.

As shown in FIGS. 19 to 21, the welding house 400 includes a frame 410 woven into a substantially hexahedral structure, and an outer shell 430 mounted on the frame 410 to protect the interior. .

The frame 410 is basically a vertical support 411 vertically erected at four corner portions, and a horizontal support 415 connected in a horizontal direction between the vertical supports 411 at the side of the welding house 400; 20b) and a variable support 420 (see FIG. 20a) connected in a horizontal direction between the vertical support 411 or the horizontal support 415 at the front and rear of the welding house, or in the middle portion.

Here, the vertical support 411 is not limited to being installed at four corner portions of the welding house 400, and is further configured to be vertically coupled to the middle portion of the horizontal support 415 as shown in Figure 20b as needed. It is also possible.

The vertical support 411 is preferably configured to be able to adjust the height, the height adjustment support 412 is inserted into the vertical support 411, the length from the vertical support 411 is appropriately adjusted and then locking The pin 414 may be inserted into the hole 413 to adjust the height.

In particular, the welding house 400 according to the present invention is configured to be adjustable in width in accordance with the working conditions, such as the size of the steel pipe, for this purpose, the intermediate portion of the variable support 420 is configured to be adjustable in length.

In the drawing of this embodiment, the variable support 420 illustrates a structure provided with three on the front, rear, middle portion of the welding house 400, as shown in Figure 20c.

The adjustable length structure of the variable support 420 is interconnected and interconnected so that one variable support 421 can be inserted into the other variable support 422 in a state where one variable support 420 is divided It can be configured to be fixed using a locking means.

Here, the locking means is a means for fixing the connecting portion in a state in which the length of the variable support 420 is properly adjusted. For example, as shown in the drawing, holes 423 are formed in both variable supports 421 and 422. Next, the locking pin 424 (see FIG. 20B, etc.) may be inserted into the hole 423.

That is, the entire length of the variable support 420 is adjusted in a state where a plurality of holes 423 are formed in both variable supports 421 and 422, and then the holes 423 of both variable supports 421 and 422. By inserting and fixing the locking pin 424 penetrating through it, it can be configured in a manner to determine the variable length of the variable support 420.

In addition, the structure for determining the variable length of the variable support 420 can be configured by various modifications using a known locking structure.

In this way, in order to adjust the width of the welding house 400, a width adjusting device 450 is provided, as an example, as shown in Figure 21 may use a ball screw structure. That is, the brackets 421b and 422b protrude from the variable support members 421 and 422, respectively, and the screws 451 are rotatably supported by one bracket 421b to the other bracket 422b. Consists of a screw-coupled configuration, as the length of the variable support 421, 422 is variable as the screw 451 rotates so that the overall width of the welding house 400 can be adjusted.

Rotation of the screw 451 may be a structure in which a worker manually rotates using a tool, and a structure that automatically rotates using an electric motor.

In FIG. 21, reference numeral 455 denotes a support bar that rotatably supports the screw 451.

On the other hand, the four corner ceiling portion where the vertical support 411, the upper horizontal support 415, the variable support 420 meets the hook of the crane so that the welding house 400 can be easily transported using a crane or the like. A lifting assembly 470 may be provided that can be coupled. Lifting assembly 470 may be composed of a hook structure, such as hook can be easily coupled.

Now, the outer shell 430 coupled to the frame 410 as described above will be described.

The outer shell 430 may be made of a hard plate such as metal or a flexible material such as a stream.

As the frame 410 is generally composed of a hexahedral structure, the outer shell 430 may also have side shells 431, upper shells 433, and front and rear shells at both sides, top, front, and rear of the welding house 400. 435 is configured to be installed on the frame 410, respectively.

The side shell body 431 may be configured with a plurality of windows 432 as necessary. At this time, it is preferable to configure the transparent window so that the internal or external confirmation.

In particular, the outer shell 430 installed on the upper surface (ceiling surface) and the front and rear of the welding house 400 is configured to cope with this according to the width control structure of the welding house 400, divided both sides of the variable support The upper outer shell 433 and the front and rear outer shell 435 are also installed in the divided state and the two divided outer shells overlap each other so that the entire length of the variable support 420 is variable. Accordingly, it is preferable that both the upper outer skin 433 and the front and rear outer shell 435 are configured to be lateral sliding while being mutually sliding.

In the figure, 433a and 433b indicate a portion where the upper shell 433 is divided, and 435a and 435b indicate a portion where the front and outer shell 435 is divided. Here, at least any one of the ends divided from each other in the upper outer shell 433 and the front and rear outer shell 435 may be formed to be bent in a relative outer shell direction so that the inflow of wind or water is minimized from the outside. Do.

And the steel pipe passes through the front and rear of the welding house 400, for this purpose windproof curtain 437 with a flexible material (for example, vinyl film, resin film or stream) on the front and back of the welding house; It is also possible to configure (see 19).

Windproof curtain 437 may be configured to extend to the circumference of the steel pipe in a state fixed to the vertical support 411 and the front and back shell 435. Of course, the windbreak curtain 437 is also preferably arranged in a divided structure, such as front and rear outer shell 435, the middle portion is preferably formed in a semi-circular structure so that the steel pipe passes.

On the other hand, it is also possible to omit the front and rear outer skin 435 on the front and rear of the welding house, it can be configured with both of the wind-proof curtain (437). On the contrary, instead of the windbreak curtain 437 in the front and rear of the welding house, it is also possible to configure the plate material of the same or similar material as the front and rear outer shell 435.

In the welding house 400 as described above, a plurality of shelf-type equipment mounting units 480 may be configured to install additional equipment required for the automatic welding device for the outer surface of the steel pipe. Equipment mounting unit 480 is preferably installed in the welding house 400 fixed to the frame 410 or the outer shell 430.

The equipment mounting unit 480 may be equipped with a welder power source, a controller, a gas supply, a welding carriage, a welding wire supply device, and the like, which are typically required for a welding operation.

In addition, the welding house 400 may be provided with a number of additional devices required for the automatic welding of the steel pipe outer surface.

For example, the lighting device for illuminating the inside of the welding house 400, the ventilation device 490 for discharging the gas generated during the welding operation in the welding house 400 to the outside, for the heating and cooling of the welding house 400 An air conditioning device may be provided.

The welding house 400 configured as described above assists to smoothly and continuously perform welding connection work of the steel pipe outer surface connection even when weather conditions such as snow, rain, wind, and night are not good. .

For reference, FIG. 20B illustrates a welding operation state using the steel pipe outer surface automatic welding device 200 having the automatic welding carriage 250 in the welding house 400.

In particular, since the overall width of the welding house is configured to be varied by a predetermined width according to the specifications or working conditions of the steel pipe (P), it is possible to increase the applicability and ease of work when connecting the steel pipe construction.

Next, with reference to FIGS. 22 to 29, a method for automatically connecting the steel pipe site construction according to the present invention will be described.

22 to 28 are diagrams sequentially showing the method of automatic connection of steel pipe construction site according to the present invention.

With reference to these drawings, a method for automatically connecting the steel pipe field construction according to the present invention will be described in turn.

First, as shown in 19, the connection part (joint part) of the steel pipe P is chamfered.

That is, in a state where the ends of the steel pipes are perpendicular to each other, using the chamfering equipment such as the beveler 500, the ends of both steel pipes P may be approximately 'J' type to allow U-type (or V-type) butt welding. Process by chamfering (C; champer).

That is, in the state in which the head 510 of the beveler 500 is inserted into the steel pipe P, the plurality of fixing blocks 520 are expanded to fix the equipment to the steel pipe, and thus the bit is centered around the main shaft 530. Chamfering the end of the steel pipe while rotating (540).

For reference, FIG. 22 shows a relatively large thickness of the steel pipe P in order to emphasize chamfering than other drawings.

Next, in a state in which one of the two steel pipes chamfered as described above is disposed in the pipe construction section, the steel pipe internal forming apparatus 100 is introduced, and both forming apparatuses 130A and 130B as shown in FIG. Protrude the shaping shoe 133 of one side shaping device (130A) of one side of the steel pipe (hereinafter referred to as the 'first steel pipe') (P1) to close the inner pipe forming device 100 to the first steel pipe ( Along with fixing P1), the first steel pipe P1 is shaped.

Here, when the steel pipe internal shaping device 100 enters or moves toward the end of the first steel pipe P1, the traveling device 120 ′ of the steel pipe internal shaping device 100 moves in a state supported on the inner surface of the steel pipe. The steel pipe internal shaping device 100 may be moved manually by using a traction mechanism or the like, and in the case of an automatic configuration, automatic driving may be performed by operating a driving motor or the like.

When the steel pipe internal forming apparatus 100 reaches the connection part side of the steel pipe in this way, in the state which located the steel pipe internal shaping device 100 so that the center of both supporting plates 177 may coincide with the center of the steel pipe connection part, By operating 130A to expand the shaping shoe 133, the entire steel pipe internal forming apparatus 100 is fixed to one steel pipe.

For reference, in the accompanying drawings, the steel pipe internal shaping apparatus of the second embodiment, which has been described with reference to FIGS. 12 to 14, is illustrated, and the steel pipe internal shaping of the first embodiment described with reference to FIGS. It is a matter of course that the apparatus can be used in the same manner.

Next, as shown in FIG. 24, the first steel pipe in a state in which another steel pipe (hereinafter referred to as 'second steel pipe') P2 to be connected with the first steel pipe P1 is lifted using equipment such as a crane C. To the side and close to the first steel pipe to allow butt welding. At this time, the back support device 170 and the second shaping device 130B of the steel pipe internal shaping device that are out of the first steel pipe are located inside the second steel pipe P2.

Next, as illustrated in FIG. 25, the second steel pipe (by contacting the inner surface of the second steel pipe P2 by protruding the shaping shoe 133 of the second shaping device 130B located inside the second steel pipe P2). While firmly holding P2), the second steel pipe P2 can be shaped.

As the first shaping device 130A and the second shaping device 130B are expanded as described above, both steel pipes may be shaped to be close to the source, or at the same time, the shaping may be performed to minimize the step difference.

Next, when the back support device 170 is operated, as shown in FIG. 26, the supporting plate 177 is expanded and adhered to the inner surface of the connection portion where the first steel pipe P1 and the second steel pipe P2 are in close contact with each other. do. When the supporting plate 177 is extended as a whole, it forms a circular band structure and is in close contact with inner surfaces of both steel pipe connections to support external welding.

Next, as shown in FIG. 27, the steel pipe outer surface automatic welding device 200 is mounted on either one of the first steel pipe P1 and the second steel pipe P2 (in the drawing, P1), The outer surfaces of the connecting portions of both steel pipes P1 and P2 supported by the supporting plate 177 are welded.

The steel pipe outer surface welding operation performs automatic circumference welding on the outer surface of a steel pipe connection part, operating the automatic welding carriage 250, and moving along the travel rail 240. FIG.

When performing automatic circumferential welding on the outer surface of the steel pipe connecting portion while moving the automatic welding carriage 250, the welding position, that is, the angle divided along the circumference of the steel pipe in the circumferential direction from the starting point of welding (the same angular division or the other angular division, the same angle + The welding voltage, welding current, traveling speed, welding wire supply speed, weaving speed of welding torch, weaving width, weaving dwell time, torch angle, torch height, etc. Welding is carried out while changing it.

In addition, the steel pipe connecting portion is welded in several passes, and the above-described change in parameters is preferably performed in a state where the welding is set differently for each pass. Of course, it is preferable that the welding conditions are set to be different depending on the standard (pipe diameter, thickness, material, etc.) of the steel pipe.

Such welding control setting is performed by the operator using an operation terminal in a state in which welding programs set according to welding conditions are input to the welding driving control unit of the automatic welding carriage 250 described above. When the welding conditions (selection command) such as thickness, welding path, welding direction, etc. are inputted, the welding equipment including the automatic welding carriage 250 is automatically operated by the welding program loaded according to the command conditions and the outer surface of the steel pipe connection part is automatically operated. Automatic welding can be performed.

On the other hand, in order to proceed with the welding operation more quickly using the steel pipe outer surface automatic welding device 200, as shown in FIG. 28, two automatic welding carriages 250A and 250B on one traveling rail 240 It can also be mounted and welded at the same time. That is, one semicircular section of the steel pipe connection is welded with one automatic welding carriage 250A while two automatic welding carriages 250A and 250B are mounted on the traveling rail 240, and the other automatic welding carriage ( 250B) at the same time welding the other semicircular section of the steel pipe connection. At this time, in order to prevent the interference between the two automatic welding carriages 250A and 250B, when performing the lower welding, one side from the uppermost point of the steel pipe using one automatic welding carriage 250A (left side in the drawing). Start welding in the downward direction (①) first, and then move to a certain degree. Then, use the other automatic welding carriage 250B to move the welding from the top of the steel pipe to the other side (right in the drawing) and downward (②). Conduct.

Of course, in the case of performing the upstream welding, it proceeds in the same manner as the above-described downstream welding method on both sides of the lowest point of the steel pipe connecting portion.

Finally, the part which welds and meets in both sections is processed by the final welding using one automatic welding carriage 250A or 250B.

As described above, the welding using the two automatic welding carriages 250A and 250B can be performed by dividing the two sides in the above-described manner so that not only one-pass welding but also two-pass, three-pass, or more welding can be continuously performed. Therefore, the welding work of the steel pipe connection can be completed more quickly.

Meanwhile, as shown in FIG. 29, the welding operation is performed in a state in which the welding house 400 described above with reference to FIGS. 19 to 21 is installed. In this case, the welding house 400 may adjust the width according to the size of the steel pipe to be connected or the surrounding work environment, so that the welding operation is more stably performed in the state in which the width of the welding house 400 is properly adjusted. You can do it.

In addition, in the above, when welding the steel pipe connecting portion outer surface by the steel pipe outer surface automatic welding device 200 in a plurality of passes, when the steel pipe outer surface automatic welding device 200, one pass or more welding around the outer surface of the steel pipe connecting portion is completed The steel pipe outer surface automatic welding device 200 continuously welds the outer circumference of the steel pipe connecting portion, and the steel pipe internal forming apparatus 100 moves to the next steel pipe connecting portion, and then forms both steel pipes, supports the back pipe, and then connects the steel pipes. It is preferable to construct so that the welding of the outer surface of the steel pipe can be made continuously in the section.

As described above, the technical ideas described in the embodiments of the present invention can be performed independently of each other, and can be implemented in combination with each other. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art. It is possible. Accordingly, the technical scope of the present invention should be determined by the appended claims.

Claims (11)

A center frame 110 installed in the longitudinal direction; Two forming apparatuses (130) provided around the center frame (110) to be in close contact with inner surfaces of both steel pipes to perform a gripping function, and to shape the steel pipe connecting portions to coincide with each other; A back supporting device (170) provided between the two forming apparatuses (130) around the center frame (110) and in close contact with inner surfaces of the connection portions of both steel pipes to assist welding of the outer surface of the steel pipes; A main body 150 installed at the center frame 110 to support both the shaping device 130 and the back supporting device 170; It is configured to include a plurality of drive unit 140 provided in the main body portion 150 to drive both the forming device 130, the back support device 170 to shrink and expand with respect to the inner surface of the steel pipe,
At least one of the driving units 140 of the plurality of driving units 140 has a ring-shaped body structure, the fixed body 141 supported by the body portion 150, and is located in the central portion of the fixed body 141 And a rotating plate 143 rotatably supported by the center frame 110 and an actuator for being connected to the rotating plate 143 while being supported by the fixing body 141 to rotate the rotating plate 143 forward and reverse. 145, a lifting rod 147 disposed radially in the fixed body 141 and linearly moving in a radial direction, and a transmission link 149 connected between the lifting rod 147 and the rotating plate 143. Steel pipe internal shaping device comprising a.
The method according to claim 1,
Both ends of the center frame 110 is provided with a traveling device 120 to travel inside the steel pipe,
Steel body internal shaping device, characterized in that connected between the main body portion 150 and the portion in which the traveling device 120 is installed in a joint (115) structure to enable bending of the center frame (110).
The method according to claim 1,
Steel body internal shaping device, characterized in that the main body portion 150 is provided with a traveling device 120 on both sides with respect to the portion where both the shaping device 130 and the back support device 170 is installed.
The method according to claim 1,
Both the shaping device 130 is provided with a first shaping device 130A and a second shaping device 130B with the back support device 170 therebetween, in each shaping device is closely contacted to the inner surface of the steel pipe Steel plate internal forming apparatus, characterized in that the roller 135 is installed (133).
The method of claim 4,
The shaping shoe 133 of the first shaping device 130A is arranged such that the roller 135 can travel in the longitudinal direction of the steel pipe,
The shaping shoe (133) of the second shaping device (130B) is a steel pipe internal shaping device, characterized in that the roller 135 is arranged to travel in the circumferential direction of the steel pipe.
The method according to claim 1,
Both of the shaping device 130 and the driving unit 140 of the back support device 170 is configured to operate by hydraulic pressure,
Steel body internal shaping device, characterized in that the main body portion 150 is provided with hydraulic equipment 180 for providing hydraulic pressure to the drive unit (140).
The method according to claim 1,
The back supporting device 170 is divided by a predetermined length in the circumferential direction and moved or contracted in the left and right direction by the driving unit 140 to contract or expand to implement a supporting operation, and the driving unit ( A supporting support block 173 connected to an end of each lifting rod 147 of the support 140 to support the supporting plate 177 so as to be slidable in the longitudinal direction of the steel pipe, and each supporting plate 177 and the supporting support block ( A steel pipe internal forming apparatus, characterized in that it comprises an elastic member 176 provided between the 173 to provide an elastic force to the supporting plate (177).
A steel pipe chamfer step of chamfering the steel pipe connecting portions of each steel pipe to connect the steel pipes to be constructed at the steel pipe construction site;
A steel pipe arrangement step of arranging at least one or more steel pipes (hereinafter referred to as 'first steel pipes') among steel pipes processed in the steel pipe chamfering step on a steel pipe construction site;
The steel pipe internal forming apparatus 100 according to any one of claims 1 to 7 is introduced into the first steel pipe of the steel pipe arrangement step to expand the first forming apparatus 130A among the both forming apparatuses 130. A first gripping step of gripping the first steel pipe P1;
After the first gripping step, the first steel pipe (P1) in a state in which a steel pipe (hereinafter referred to as a “second steel pipe”) to be connected to the first steel pipe (P1) among the steel pipes processed in the steel pipe chamfer step is lifted using a lifting equipment. Butt alignment step of arranging with;
A second gripping step of holding the second steel pipe (P2) by expanding the second shaping device located inside the second steel pipe (P2) of the both forming devices (130) after the alignment step;
After the second gripping step, the back supporting device 170 is operated to extend the supporting plate 177 to support the back supporting device 170 on the inner surface of the connection portion between the first steel pipe P1 and the second steel pipe P2. A back support step of bringing the plates 177 into close contact;
The steel pipe outer surface automatic welding device 200 is mounted on the circumference of the first steel pipe P1 or the second steel pipe P2, and after the back support step, the outer surface of the steel pipe connecting portion is formed using the steel pipe outer surface automatic welding device 200. Steel pipe field construction automatic connection method using a steel pipe internal forming device, characterized in that it comprises an external welding step of automatic welding in the circumferential direction.
The method according to claim 8,
In the outer surface welding step, before the automatic welding of the outer surface of the steel pipe connecting portion by installing a welding house 400 that can protect the interior around the steel pipe connection using a steel pipe internal shaping device, characterized in that the automatic welding on the outside surface Automatic connection of steel pipe construction.
The method according to claim 8,
In the outer surface welding step, when welding the outer surface of the steel pipe using the steel pipe outer surface automatic welding device 200, the steel pipe outer surface connecting portion while moving in a 180-degree section in the left and right lower or upper direction from the highest point or the lowest point of the steel pipe connection portion Steel pipe field construction automatic connection method using a steel pipe internal forming device, characterized in that for welding.
The method according to claim 8,
In the outer surface welding step,
When welding the steel pipe connection outer surface with a plurality of passes by the steel pipe outer surface automatic welding device 200, when one pass or more welding is completed around the steel pipe connection outer surface with the steel pipe outer welding device,
The steel pipe outer surface automatic welding device continuously welds the outer circumference of the steel pipe connection,
The steel pipe internal shaping device 100 moves to the next steel pipe connecting portion, and then the steel pipe internal shaping device characterized in that the first gripping step, butt alignment step, the second gripping step, the back support step sequentially Automatic connection of steel pipe site construction using.

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