JPH0671486A - Device for straightening block steel plate - Google Patents

Abstract

PURPOSE:To provide the device for straightening a block steel plate with a simple working and a simple constitution. CONSTITUTION:In a device for straightening a block steel plate 7 in which steel frames 2 are welded by taking an end surface of one side along the longitudinal direction as the standard surface 12 in parallel with the surface 12, in order to straighten the welding strain by heating the periphery of the steel frame including the weld line from the back side of the block steel plate, a copying means (a front part arm 10, a rear part arm 11, a copying roller 13) is provided on a running truck 1 mounted in freely movable on the block steel plate in order to move the truck 1 while copying the steel frame weld line direction by taking the end surface as the copying surface, and a heating burner fitting axis 14 is fixed in a state of cantilever orthogonally crossing to the weld line direction of the steel frame. Then, an auxiliary wheel 15 in order to horizontally keep the heating burner fitting axis is attached on the free end side of the heating burner fitting axis. A heating burner 9 is fitted on the heating burner fitting axis so that the position is freely adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a block steel plate strain removing apparatus for removing welding strain of a block steel plate.

[0002]

2. Description of the Related Art The technique of welding aggregate to the inner surface of a structural steel plate (skin material) to increase its strength is widely adopted for various steel plate structures. However, residual strain due to welding cannot be completely eliminated. In general, methods such as roller scoring, peening and baking are known as methods for removing strain, but a strain removing device having a simple structure and high processing efficiency has not been provided.

[0003]

Therefore, the present applicants
A block steel plate (for example, a ship-side steel plate, a ship bottom steel plate, etc.) after welding the aggregate is placed inside out on the surface plate with the aggregate side face downward, and the periphery including the welding line of the block steel plate (hereinafter, " The "burning part") was made into a prototype of a strainer-burning burner device configured to continuously grill from the back side by means of a burning burner attached to a traveling carriage.

FIG. 4 schematically shows the construction of the strain removal burner apparatus.

The device comprises a traveling trolley 1, a block-shaped pedestal 4 provided with a traveling rail 3 for guiding the traveling trolley 1 along the welding line direction of the aggregate 2, and a horizontal pedestal of the traveling trolley 1. And a shaft mounting base 6 for mounting the roast burner mounting shaft 5 orthogonally to the welding line direction, and a back baking part 8 of the block steel plate 7 facing the left and right ends of the roast burner mounting shaft 5. It is composed of a roasted burner 9 and

Therefore, in this device, the traveling rail 3
The pedestal 4 on the block steel plate 7 in parallel with the welding line direction of the aggregate 2 (hereinafter, referred to as "back burning direction"), and then the flame of the roasting burner 9 and the speed of the traveling carriage 1 are adjusted. After that, if the traveling carriage 1 starts to move forward, it becomes possible to remove the strains at the right and left two places at the same time by one traveling. However, the long pedestal 4 can be accurately moved along the direction of the back baking. This has the disadvantage of requiring a great deal of effort and time for positioning.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a moving direction and a roasting direction of a roasting burner in the above-mentioned roasting burner device by only a simple work of placing a traveling carriage on a block steel plate. It is an object of the present invention to provide a strain relief device for a block steel plate having a simple structure adapted to meet.

[0008]

In order to achieve the above object, the present invention provides a strain of a block steel plate in which one end face along the longitudinal direction of one of the front and back sides is used as a reference plane and an aggregate is welded in parallel to the end face. In the removal device, in order to remove the welding strain by roasting the periphery including the welding line of the aggregate from the back side of the block steel plate, the one end surface is provided on a traveling carriage that is movably mounted on the block steel plate. As a copying surface, a copying means is attached to move the traveling carriage along the welding line direction of the aggregate while keeping the posture of the block steel plate diagonally inward and forward. The cantilever burner mounting shaft is cantilevered in a direction orthogonal to the direction, and an auxiliary wheel for holding the burner burner mounting shaft horizontally is provided on the free end side of the burner burner mounting shaft. It is obtained by providing fitted a burner broiled freely position adjustment in the mounting shaft.

[0009]

With the above construction, the carriage moves along one end surface of the block steel plate while keeping the posture in which the carriage faces diagonally inward.
Therefore, the roast burner fixed to the roast burner mounting shaft properly heats the back-burning portion of the block steel plate to remove the residual strain after welding.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below.

The strain relief device basically comprises a traveling carriage which is provided with a drive motor for rotating its drive wheel shaft at the front portion in the traveling direction, and one end face of the block steel plate (hereinafter, simply referred to as "reference plane"). )), A copying means for causing the traveling vehicle to follow the traveling vehicle, a roasting burner means attached to the traveling vehicle, a position detecting means for detecting the back firing completion position of the traveling vehicle, and the traveling vehicle. And a control means for stopping the traveling carriage and stopping the roasting burner means when the position detecting means detects the roasting completion position, while controlling the running / stopping and speed control of the roasting burner means. It consists of

A detailed description will be given below with reference to the accompanying drawings. The same components as those of the conventional technique are designated by the same reference numerals and detailed description thereof will be basically omitted.

FIG. 1 is a front view of a strain relief apparatus according to the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is an enlarged view of a traveling carriage.

As shown in FIG. 1 and FIG. 2, the copying means is provided at the outer side front part of the traveling carriage 1 in the forward direction so as to horizontally and outwardly project from the outer side part. A front arm 10 and an outer side rear part thereof, which are horizontally provided from the outer side part and outwardly projecting in parallel with the front arm 10, and the projecting length thereof is , The rear arm 11 that is set to be slightly shorter than the protruding length of the front arm 10, and these arms 10, 11
At the tip of each of the copying rollers 13 and 13 rotatably around the vertical axis and brought into contact with the reference surface 12 of the block steel plate 7 and rotated. That is, the front and rear copy rollers 13, 13 are brought into contact with the reference surface 12 of the block steel plate 7 to place the traveling carriage 1 obliquely inward and forward with respect to the block steel plate 7, The traveling carriage 1 is regulated by the copying rollers 13 and 13.
The vehicle is allowed to travel (forward) following the direction of the back burning while maintaining the posture of facing diagonally inward.

The roasting burner means heats the roasting part 8 of the block steel plate 7 with a burner flame to remove the strain of the block steel plate 7, and these roasting burners 9
A roasting burner mounting shaft 14 for individually facing the roasting parts 8 and an axis line of the roasting burner mounting shaft 14 fixed to the traveling carriage 1 in a direction orthogonal to the roasting direction. Shaft mounting base 6 and an auxiliary wheel for supporting the other end of the burnt burner mounting shaft 14 and supporting the burnt burner mounting shaft 14 horizontally with respect to the block steel plate 7 together with the shaft mounting base 6. 15, a means for distributing and supplying the fuel gas to the roasting burner 9, and a means for distributing and supplying oxygen to the roasting burner 9.

The roasting burner 9 has two nozzles (fire mouths) 1 formed in a branched manner so that the left and right sides of the abutting surface of the aggregate 2 are heated to the same extent at the tip of the roasting burner 9.
6 is formed. The auxiliary wheel 15 and the roasting burner 9 are detachably attached to the roasting burner mounting shaft 14 by a mounting bracket 17. The mounting bracket 17 includes a tubular member 18 that is formed so as to be loosely fitted to the roar burner mounting shaft 14, and the tubular member 18.
And a lock bolt (butterfly bolt, etc.) 19 screwed in the radial direction to the auxiliary wheel 15 and the burner burner 9 at appropriate positions on the burner burner mounting shaft 14 so that the auxiliary wheel 15 and the burner burner 9 can be fixed. It has become.

As shown in FIG. 2, the means for supplying the fuel is the first parent gas supply pipe 20 of the fuel gas supply source (gas cylinder) and the first sub gas for supplying the fuel gas to the roast burner 9. The supply pipe 21 is connected by a single first gas branch pipe (gas collecting octopus) 22, and a first gas solenoid valve 23 is provided in the middle of the first parent gas supply pipe 20. Has been done.

The means for supplying oxygen includes a second parent gas supply pipe 24 for the oxygen source (gas cylinder) and a second child gas supply pipe 25 for supplying the fuel gas to the roast burner 9 as one unit. Two gas branch pipes (gas collecting octopus) 26 are connected, and a second gas solenoid valve 27 is provided in the middle of the second parent gas supply pipe 24.

That is, the means for supplying these fuel and oxygen are the first gas solenoid valve 23 and the second gas solenoid valve, respectively.
By opening the gas solenoid valve 27, fuel gas and oxygen are supplied to the burner burner 9, and by closing the first gas solenoid valve 23 and the second gas solenoid valve 27, respectively, the burner burner 9 is supplied. The supply of fuel gas and oxygen is cut off.

The position detecting means includes a limit switch 28 attached to the front end of the traveling carriage 1 and a block steel plate 7.
And a switch operating member (not shown) that abuts (ON) the limit switch 28 at the back burning completion position to limit whether the traveling carriage 1 reaches the back burning completed position. The switch 28 is turned on and off to detect it.

The control means 29, as shown in detail in FIG. 3, is a control box 30 provided on the loading platform of the traveling vehicle 1.
It is electrically configured by a circuit built in. Specifically, in the control means 29, the control power switch 31 is turned on.
(Energization), the cart running start switch 32 is ON (energization),
A drive circuit (not shown) that supplies the control power source adjusted by the speed adjustment volume 33 to the drive motor 37 of the traveling vehicle 1 when the limit switch 28 is OFF.
And the fuel / oxygen supply switch 34 for supplying fuel and oxygen is ON (supply), the first gas solenoid valve 2
The fuel gas / oxygen stop switch 35 for turning on (opening) the third and second gas solenoid valves 27 to enable the supply of fuel and oxygen, and conversely to stop the supply of fuel and oxygen.
Is ON (no supply), the first gas solenoid valve 23 and the second gas solenoid valve 23
When the gas solenoid valve 27 is turned off (closed) and a control circuit (not shown) that shuts off the supply of fuel and oxygen, and the limit switch 28 is brought into contact with the contact member to be turned on, that is, the traveling carriage 1 is When the back roasting completion position is reached, the drive control of the drive circuit is prohibited by prohibiting the traveling control of the drive circuit.
Turn off the control power to 7 (no current), first gas solenoid valve 2
3, a second gas electromagnetic valve 27 is turned off (closed) to stop the traveling carriage 1 and a stop circuit (not shown) that cuts off the supply of fuel gas and oxygen to each roast burner 9. . In the drive circuit, a circuit for magnetizing the electromagnet 36 built in the traveling vehicle 1 to adsorb the traveling vehicle 1 to the block steel plate 7 in a non-contact manner, and the drive motor 3 described above.
A circuit for reversing 7 is also provided. Reference numeral 39 is a forward / reverse changeover switch of the drive motor 37, 40 is a control power source display lamp, and 41 is a lamp for displaying that gas is being fed.

The handling and operation of the roasting burner device according to the present invention will be described below.

[Initial Settings] First, as shown in FIGS. 1 and 2, the traveling carriage 1 is temporarily placed at the back firing start position on the reference surface 12 side of the block steel plate 7. Next, the copying rollers 13 of the front arm 10 and the rear arm 11 are brought into contact with the reference surface 12 of the block steel plate 7 to adjust the tip of the traveling carriage 1 so as to be directed obliquely inward and forward of the block steel plate 7. (When starting the back baking from the end of the block steel plate 7, an auxiliary steel plate (not shown) extending the reference surface 12 to the front side from the end of the block steel plate 7 is attached to the end. Set the traveling carriage 1). Next, the control power switch 31
Is turned on to enable the control means 29 to start, magnetize the electromagnet 36 built in the traveling carriage 1, and attract the traveling carriage 1 to the block steel plate 7 to prevent the displacement of the traveling carriage 1.

After the traveling carriage 1 is completely placed, the roaring burner 9
Adjust the position of. This adjustment is performed by loosening the lock bolt 19 of the mounting member 17.

Next, the fuel gas / oxygen supply switch 34 is turned on.
As N, fuel gas and oxygen are jetted from the burner 9 to ignite, and a burner flame is adjusted by adjusting valves (not shown) of the fuel supply source and the oxygen supply source.

[Strain removal] After completion of the initial setting, the speed adjusting volume 33 is adjusted to a speed suitable for spine firing, and the running start switch 32 is turned on (see FIG. 3). The traveling trolley 1 remains in a posture facing diagonally inward at the set speed,
Following the reference surface 12 of the block steel plate 7, the block steel plate 7 moves forward in the direction of the back baking. Therefore, each roasting burner 9 fixed to the roasting burner mounting shaft 14 appropriately heats the back burning part 8 to sequentially remove the residual strain of welding.
When the traveling vehicle 1 reaches the back-burning completion position, the limit switch 28 is turned on by the contact member, and the control circuit turns off the control power supply to the drive motor 37 and the fuel gas / fuel gas /
The oxygen stop switch 35 is turned on to automatically prohibit the control of the drive circuit to stop the traveling carriage 1 and cause the roar burner 9 to misfire.

As described above, the strain relief device according to the present invention has an excellent effect that the strain relief of the block steel plate 7 welded with a large number of aggregates 2 can be simultaneously and automatically performed.

[0028]

As is clear from the above description, the present invention exhibits the following excellent effects.

(1) The moving direction of the burner and the direction of the back baking can be made to coincide with each other only by the work of mounting the traveling carriage on the block steel plate, and the work efficiency of strain relief can be greatly improved.

(2) Stable strain removal with high reliability can be automatically performed.

(3) It can contribute to labor saving.

[Brief description of drawings]

FIG. 1 is a front view of a strain relief device for a block steel plate according to the present invention.

FIG. 2 is a plan view of a block steel plate strain relief device according to the present invention.

FIG. 3 is an enlarged view of a traveling carriage.

FIG. 4 is a front view of an anti-corrosion burner apparatus studied simultaneously with the anti-strain device for block steel plates according to the present invention.

[Explanation of symbols]

 1 Traveling Bogie 2 Aggregate 7 Block Steel Plate 9 Aperture Burner 10 Front Arm (Copying Means) 11 Rear Arm (Copying Means) 13 Copying Roller (Copying Means) 14 Burning Burner Attachment Shaft 15 Auxiliary Wheel

Claims (1)

[Claims] 1. A strain relief apparatus for a block steel plate in which one end face along the longitudinal direction of one of the front and back sides is used as a reference plane and parallel aggregates are welded to the block steel sheet in a strain relief device. In order to remove the welding strain by roasting from the back side of the steel plate, the traveling trolley placed on the block steel plate is mounted on the traveling trolley with the one end face as the copying surface and the traveling trolley remains in the diagonally inward forward direction of the block steel plate. Attaching profiling means for moving in the welding line direction of the aggregate, and in a posture in which the traveling carriage is obliquely inward and forward, orthogonally intersects with the welding line direction of the aggregate, the cantilevered burner mounting shaft is fixed and the roasting is performed. Provided on the free end side of the burner mounting shaft is an auxiliary wheel for holding the burner mounting shaft horizontally, and the burner burner is fitted to the mounting shaft so that the position can be adjusted freely. A strain relief device for block steel plates.