KR20200121016A - Welding Deformation Corrector - Google Patents

Abstract

The present invention relates to a welding deformation corrector for correcting a thermal deformation in accordance with welding for steel sheets, reinforcing materials, etc. so as to manufacture a ship block. Specifically, according to the present invention, the welding deformation corrector is configured to control, in working along a welded part, the heat application volume in accordance with the degree of thermal deformation so as to evenly restore the cast plate thermally deformed into an original status of the same. To this end, according to the present invention, the welding deformation corrector is a welding deformation corrector which is placed on a rear surface of a cast plate with a reinforcing material welded to move along the welded part and restore the cast plate deformed by the welding heat. The welding deformation corrector comprises: a carriage with wheels to be movable along the welded part on a rear surface of the cast plate; a turning unit which is engaged with the carriage by a hinge to be extended towards one side of the carriage and thus, turn around up and down; a transversal unit fixed to the turning unit to be extended to the sides of the welded part; probes fixed to end units of the transversal unit to come in contact with the rear surface of the cast plate; a sensor which measures the inclination of the turning unit; and a heating torch mounted on the carriage to radiate flame by controlling the size of the flame in accordance with the inclination of the turning unit.

Description

Welding Deformation Corrector

The present invention relates to a welding deformation corrector for correcting thermal deformation caused by welding steel plates and reinforcing materials to manufacture a ship block, and in particular, thermal deformation by controlling the amount of heating according to the degree of thermal deformation in progress along the welding area. It is constructed so that the old abacus can be uniformly restored to its original state.

In manufacturing ship blocks, etc., stiffeners, which are stiffeners for reinforcing the abacus, are welded to major parts such as the shell of the hull. Typically, in order to weld the reinforcement to the main plate, the welding is performed by fillet welding (T-JOINT) method.As the joints on both sides of the reinforcing material in contact with the main plate are heated and welded, thermal deformation occurs in the main plate to which the reinforcement is welded.

In the drawings, FIG. 1 is a cross-sectional view showing an example of thermal deformation of the abacus caused when a reinforcing material is welded to the abacus constituting a ship, and FIG. 2 is a cross-sectional view showing a state restored by applying heat to the rear surface of the abacus.

In welding with the bottom view welding method, the wide abacus (1) is located on the floor, and welding is performed while the reinforcing material (3) is seated on the upper surface of the abacus (1).

Fillet welding (T-JOINT) described above is a method of welding both sides of the surface of the reinforcement material 3 in contact with the main plate 1, and as the welding area is heated to a high temperature, considerable residual stress remains after welding. As shown in Fig. 1, thermal deformation occurs with the welded portion as the inner shell.

In this way, the abacus (1) to which the reinforcing material (3) is welded is thermally deformed along the welding area, and in order to restore it, heat is applied to the opposite side of the welding surface (hereinafter referred to as'the back side') and twisted upward ( 1) Make sure that it is restored to its flat original state.

Conventionally, in restoring the abacus (1) in its original form by applying heat to the back surface of the welded abacus (1), as shown in Fig. 2, the operator grips the heating torch (5) and heats it while moving along the welding area. I did.

As described above, there is a disadvantage in that the degree of restoration of the abacus varies according to the skill level of the worker as the worker performs the work according to his or her intuition.

In applying heat using the heating torch, if the moving speed of the heating torch is slow, heating is concentrated and the abacus may rather bend toward the rear side, and if the moving speed is high, there is a disadvantage that restoration is not performed properly.

In addition, as the worker grips the heating torch and continuously heats it along the welding area, the worker's fatigue increases, and there is a problem in that the abacus is poorly restored due to a decrease in concentration.

Korean Patent Publication No. 10-2001-0019110 (published on March 15, 2001)

The present invention was invented to solve the problems of the prior art as described above, and is for restoring the shape of the abacus by applying heat to the back surface of the abacus on which a reinforcement is welded. It is an object of the present invention to provide a welding strain corrector configured to allow uniform restoration of the entire abacus by heating appropriate heat by measuring.

In order to achieve the above object, the present invention is a welding deformation corrector that moves along the welding area and restores the abacus deformed by welding heat by being located on the back surface of the main plate to which the reinforcing material is welded, and moves along the welding area on the back surface of the abacus A bogie with wheels mounted so as to be possible, a slewing platform that is hinged to the bogie and extends in one direction of the bogie and can turn in a vertical direction, a crossbar that is fixed to the slewing platform and extends in the lateral direction of the welding area, and the end of the crossbar. It is characterized in that it includes probes that are fixed and in contact with the rear surface of the abacus, a sensor that measures the slope of the turning table, and a heating torch that is mounted on the bogie and controls the size of the flame according to the slope of the turntable to radiate it.

In addition, according to a preferred embodiment of the present invention, the pivot is fixed in the middle of the length of the crossbar, and probes are mounted at both ends of the crossbar.

In addition, according to a preferred embodiment of the present invention, a spring that provides an elastic force to the pivot so that the probe presses the back surface of the main plate is mounted on the cart.

In addition, according to a preferred embodiment of the present invention, the wheel is a magnet or a steel wheel magnetized with a magnet attached thereto.

In addition, according to a preferred embodiment of the present invention, grooves in the longitudinal direction are formed in the bogie, long holes into which both ends of the hinge shaft are hinged together are formed on both sides of the groove, and the welding deformation corrector is a hinge inserted into the long hole. It further includes a locking portion for locking the shaft to prevent movement.

In addition, according to a preferred embodiment of the present invention, a locking pin protrudes from one end of the hinge shaft, and a spring is inserted into the groove formed at the other end of the hinge shaft, and the spring pushes the locking pin inserted in the groove outward, The locking pins at both ends of the hinge shaft are inserted into the locking holes formed at intervals inside the long hole to be locked.

As described above, the welding deformation corrector according to the present invention detects the degree of thermal deformation of the abacus and controls the amount of heating applied to the back surface of the abacus accordingly, so that even the unskilled person can reduce the thermal deformation of the abacus to the same or similar to the original state. It has the advantage that it can be restored.

In addition, the welding deformation corrector according to the present invention is equipped with a heating torch to heat the welding portion of the back side of the abacus while pushing the bogie, so that the operator grips the heating torch and directly heats it as in the prior art.

The welding deformation corrector according to the present invention has the advantage that it is possible to correct the heating amount according to conditions, and thus, even in the case of abacus having a different thickness, can be suitably used by correcting the welding deformation corrector.

1 is a cross-sectional view showing an example of thermal deformation of the main plate generated when a reinforcing material is welded to the main plate constituting a ship,
2 is a cross-sectional view showing a state restored by applying heat to the rear surface of the abacus.
3 is a conceptual diagram showing a process of restoring the abacus using the welding deformation corrector according to the present invention,
4 is a cross-sectional view showing the welding deformation corrector shown in FIG. 3,
5 is a perspective view showing the welding deformation corrector shown in FIG. 3.
6 is a cross-sectional view of the welding strain corrector shown in FIG. 3,
7 is a cross-sectional view showing the operating relationship of the welding deformation corrector according to the degree of thermal deformation of the main plate,
Fig. 8 is a longitudinal sectional view of a hinge axis for explaining a correction relationship of a welding strain corrector.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a welding strain corrector according to the present invention will be described in detail.

In the drawings, FIG. 3 is a conceptual diagram showing a process of restoring the abacus using the welding deformation corrector according to the present invention, FIG. 4 is a cross-sectional view showing the welding deformation corrector shown in FIG. 3, and FIG. 5 is It is a perspective view showing a welding strain corrector. And Figure 6 is a cross-sectional view of the welding strain straightener shown in Figure 3, Figure 7 is a cross-sectional view showing the operating relationship of the welding strain straightener according to the degree of thermal deformation of the main plate, Figure 8 is for explaining the correction relationship of the welding strain straightener It is a longitudinal sectional view of the hinge axis.

3 and 4, the abacus 1 to which the reinforcing material 3 is welded is a welding deformation corrector on the back surface of the abacus 1 exposed upward in a state in which the reinforcing material 3 is turned upside down. Position 100, while the welding deformation corrector 100 moves along the welding area and heats the welding area with a flame to restore the thermally deformed area to its original state.

When the reinforcing material 3 is welded as shown in FIG. 3, both sides of the abacus 1 are deformed so that the side where the reinforcing material 3 is located forms an interior angle. As shown in FIG. 4, when the abacus 1 is turned over, The height of the welded part is high and it is converted into a form that is lowered to both sides.

Therefore, when the operator places the welding deformation corrector 100 at the area where the reinforcing material 3 is welded and moves the welding deformation corrector 100 along the welding area, the flame is radiated downward from the welding deformation corrector 100 and the abacus 1 Heat the welding part on the back side of ). The stress remaining on the abacus 1 is reduced by the heated heat, and the original shape of the abacus 1 is restored.

The welding deformation corrector 100 configured as described above is as shown in FIGS. 3 to 6.

As shown in Figures 3 to 6, the welding deformation corrector 100 is a bogie 110 having four magnetic wheels 113, and hinged to the bogie 110, and the hinge shaft 121 as a pedestal A slewing table 120 in which both ends rotate in a vertical direction in a lever manner, a cross-bar 130, which is fixed to the end of the slewing table 120 and positioned in the width direction from the front of the bogie 110, and a cross-bar 130 A coil spring 140, which is an elastic body that provides an elastic force in contact with the swing table 120 so as to move downward, and a sensor 150 and a sensor 150 that measures the slope of the swing table 120 in contact with the swing table 120 It includes a heating torch 160 mounted on the bogie 110 so as to radiate a flame toward the abacus 1 according to the inclination of the pivot 120 measured at.

Hereinafter, a welding strain corrector configured as described above will be described in detail.

5 to 7, the bogie 110 has grooves 111 formed in the longitudinal direction on its upper surface, and freely rotatable wheels 113 are mounted on both front and rear ends of the bogie 110. . The wheel 113 is a wheel composed of a magnet or a steel wheel magnetized by attaching a magnet. When the welding deformation corrector 100 is mounted on the abacus 1, the bogie 110 is moved by the magnetic force of the wheel 113. When the operator pushes the bogie 110 while attached to the abacus 1, the bogie 110 moves forward while the wheels 113 rotate by friction.

On the other hand, inside the groove 111 of the bogie 110, a pivot 120 is located in the longitudinal direction of the bogie 110. The hinge shaft 121 is coupled to the middle of the length of the turning table 120, and both ends of the hinge shaft 121 are mounted on the inner inner surface of the groove 111 of the bogie 110.

A crossbar 130 is fixed to the front end of the pivot 120, and the tip of the pivot 120 is fixed in the middle of the length of the crossbar 130.

In addition, the probes 131 are fixed downward at both ends of the crossbar 130, that is, in a downward direction in which the abacus 1 is located. The probe 131 having a triangular or conical structure may be fixed to both ends of the crossbar 130, and the ends of the probe 131 are shown to be in contact with the abacus 1, but instead of the probe 131 Thus, even if the wheel structure is changed, the objects and effects of the present invention can be implemented.

As the bogie 110 moves, the probe 131 in contact with the abacus 1 is moved up and down according to the level of the back surface of the abacus 1, and the height of the crossbar 130 changes accordingly, and the crossbar 130 The pivoting bar 120 fixed to the hinge axis 121 is pivoted in the vertical direction according to the height change of the cross bar 130. In the welding deformation corrector 100 having such a structure, the probe 131 is for sensing the degree of thermal deformation in contact with the abacus 1, and the abacus at both ends of the cross bar 130 in place of the probe 131 Even if a wheel in contact with the rear surface of (1) is mounted, the height of the crossbar 130 is changed in the vertical direction according to the degree of thermal deformation of the rear surface of the abacus 1.

On the other hand, on the inner bottom surface of the groove 111 of the bogie 110, as the crossbar 130 moves downward, the front end 120F of the pivot 120, that is, the front end from the hinge shaft 121 to the crossbar 130 ( 120F) turns downward.

The pressure sensor 150 is fixed to the inner bottom of the groove 111 in correspondence with the tip 120F of the turning table 120. As shown in FIG. 7, the pressure applied to the pressure sensor 150 increases as the distal end 120F of the slewing table 120 turns downward, and the distal end 120F of the slewing table 120 turns upward. Then, the pressure applied to the pressure sensor 150 is reduced. Here, the front end (120F) of the turning table (120) turns downward is a structure in which the height of the abacus (1) decreases toward both sides from the point where the reinforcing member (3) is welded and fixed due to severe thermal deformation of the abacus (1). That is, it means that the inclination (θ1) is large, and on the contrary, the fact that the tip 120F of the turntable 120 turns upward means that the thermal deformation of the abacus 1 is not large, so that the reinforcing material 3 is welded and fixed on both sides. It means that the height difference of the abacus (1) is not large as it goes toward, meaning that the slope (θ2) is small from the point where the reinforcement material 3 is welded to both sides.

Therefore, the magnitude of the pressure applied to the pressure sensor 150 and the degree of thermal deformation of the abacus 1 are proportional, and the magnitude of the pressure applied to the pressure sensor 150 is converted into an electrical signal and is not shown in the drawing, but is input to the control unit. do.

On the other hand, the coil spring 140 is fixed to the bottom of the groove 111 in correspondence with the rear end 120B of the turntable 120, and the coil spring 140 allows the rear end of the turntable 120 to move upward. It provides elasticity. In this way, as the rear end of the slewing table 120 is moved upward by the elasticity of the coil spring 140, the tip of the slewing table 120 is turned downward, and the probe 131 is also a coil to move downwards. Receiving the elastic force of the spring 140 is maintained in contact with the back surface of the abacus (1). In this way, as the probe 131 is pressed against the back surface of the abacus 1 by the elastic force of the coil spring 140 and comes into contact, the probe 131 stably moves the thermal The degree of deformation can be measured.

6, the heating torch 160 is fixed downward to the front end of the bogie 110. The flame of the heating torch 160 is radiated to the back surface of the abacus 1, and the degree of the flame is proportionally controlled according to the magnitude of the pressure input from the pressure sensor 150.

That is, when the pressure sensed by the pressure sensor 150 is large, the degree of thermal deformation of the abacus 1 is large. In this case, the amount of heat to the abacus 1 is increased by increasing the radiation size of the flame, and conversely, the pressure sensor ( If the pressure detected in 150) is small, the amount of heating is reduced by reducing the radiation size of the flame.

As described above, the welding deformation corrector 100 according to the present invention is for restoring the abacus 1 by applying heat to the back surface of the abacus 1 while moving along the welding portion of the abacus 1 to which the reinforcing material 3 is fixed by welding. In particular, by measuring the degree of thermal deformation of the abacus 1 and controlling the heating amount accordingly, there is an advantage in that the restoration of the abacus can be smoothly performed regardless of the skill of the operator.

As the welding deformation corrector 100 configured as described above detects the thermal deformation using the crossbar 130 to which the two probes 131 are fixed, the height of both sides of the welding area is It is detected as an average value for the displacement.

The welding deformation corrector 100 according to the present invention is configured to be able to move the position of the hinge shaft 121 to correct the pressure sensed by the pressure sensor 150. As the position of the coil spring 140 and the position of the pressure sensor 150 are fixed at the bottom of the groove 111, the hinge shaft 121 is moved in the longitudinal direction of the bogie 110 in order to correct the pressure measured according to various conditions. The pressure value can be corrected by moving.

As shown in FIG. 8, long holes 111H are formed on the inner inner surface of the groove 111 of the bogie 110, and the ends of the hinge shaft 121 are inserted into the long holes 111H, and the hinge shaft ( The locking part 170 is formed in the long hole 111H so that the 121 does not move freely.

The locking part 170 has a locking hole 171 formed with a large gap on the inner surface of the long hole 111H, and a locking pin 173 protruding from both ends of the hinge shaft 121 and inserted into the locking hole 171 to be locked. ), and a locking pin 173 at one end of the hinge shaft 121 is formed to be movable in the longitudinal direction of the hinge shaft 121.

Specifically, a hole is formed at one end of the hinge shaft 121 in the longitudinal direction of the hinge shaft 121, and a spring 177 and a locking pin 173 are inserted into the hole. In addition, the clasp 175 formed on the side of the locking pin 173 passes through the long hole formed in the hinge shaft 121 and protrudes to the outside of the hinge shaft 121.

Therefore, when the operator moves the clasp 175 protruding out of the hinge shaft 121 toward the middle of the length of the hinge shaft 121, the spring 177 located inside the hole is compressed, and the locking pin 173 becomes the hinge shaft 121 ) It is brought into the interior. Therefore, as the entire length of the hinge shaft 121 decreases, the locking pin 173 is pulled out from the locking hole 171 to move the hinge shaft 121 to another locking hole along the long hole 111H formed on the inner surface of the groove 111. You can move. In this state, when the force applied to the latch 175 is removed, the locking pin 173 protrudes out of the end of the hinge shaft 121 and is inserted into another locking hole to be locked.

As the hinge shaft 121 moves in this way, the pressure applied to the pressure sensor 150 when the swing table 120 rotates is corrected, and the heating amount is adjusted by adjusting the amount of gas supplied from the control unit according to the corrected pressure. do.

1: abacus
3: reinforcement
5: heating torch
100: welding strain corrector
110: Balance
111: home
113: wheel
120: turntable
121: hinge shaft
130: crossbar
140: coil spring
150: pressure sensor
160: heating torch
170: locking part
171: lock hole
173: locking pin
175: clasp

Claims (6)

As a welding deformation corrector that restores the abacus deformed by welding heat while moving along the welding part by being located on the back side of the abacus to which a reinforcing material is welded,
A bogie equipped with wheels so as to be movable along the welded portion of the back side of the abacus,
It is hinged to the bogie and extends in one direction of the bogie and can turn in the vertical direction;
A crossbar that is fixed to the pivot and extends in the lateral direction of the welding area,
Probes fixed to the end of the crossbar and in contact with the back side of the abacus,
A sensor that measures the tilt of the pivot,
A welding deformation corrector, characterized in that it comprises a heating torch that is mounted on the bogie and radiates by controlling the size of the flame according to the slope of the turning table.
The method of claim 1,
A welding deformation corrector, characterized in that the pivot is fixed in the middle of the length of the crossbar, and probes are mounted at both ends of the crossbar.
The method according to claim 1 or 2,
A welding deformation corrector, characterized in that a spring that provides an elastic force to the turning table so that the probe presses the back surface of the main plate is mounted on the bogie.
The method according to claim 1 or 2,
The wheel is a welding deformation corrector, characterized in that the wheel is made of a magnet or magnetized steel.
The method according to claim 1 or 2,
A longitudinal groove is formed on the bogie, and a long hole is formed on both sides of the groove into which both ends of the hinge shaft are hinged,
The welding deformation corrector further comprises a locking part that locks the hinge axis inserted in the long hole to prevent movement.
The method of claim 5,
A locking pin protrudes from one end of the hinge shaft, and a spring is inserted into the groove formed at the other end of the hinge shaft, and the spring pushes the locking pin inserted in the groove outward,
The locking pins at both ends of the hinge shaft are inserted into and locked into a locking hole formed at an interval within a long hole.

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