JPH084228Y2 - Traveling trolley for welding - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling carriage for welding, which is equipped with a welding torch, travels along a member to be welded, and moves a nozzle tip of the welding torch along a region to be welded. .

[0002]

2. Description of the Related Art For example, when a standing plate is to be fillet-welded to a lower plate, first, the standing plate is temporarily welded to the lower plate to stand up, and in the past, a welding torch was held in the hand to perform welding. The tip of the nozzle of the torch was moved along the welded area to perform the target fillet welding. However, the method of welding by holding the welding torch in the hand is very inconvenient for the welding work, and requires a skill for welding, so that there is an inconvenience that only a skilled worker can engage in the welding work. In order to eliminate such inconvenience, in recent years, a welding torch is mounted on a traveling carriage, and the traveling carriage travels along a member to be welded, so that the tip of the nozzle of the welding torch is welded along the region to be welded. A traveling carriage for welding, which moves and fillet welds automatically, has been developed.

FIG. 10 shows a general schematic configuration of a conventional traveling vehicle. In the figure, a traveling carriage 1 has wheels 3 mounted on a carriage body 2 in the front, rear, left and right, and has a motor (not shown) built therein, and a standing plate 4 as a member to be welded from both front and rear sides of the carriage body 2. A pair of arms 5a and 5b are provided so as to project in the direction, and a copying roller 6 that follows the standing plate 4 is rotatably attached to the tip ends of the arms 5a and 5b. A torch holder 7 is attached to the trolley body 2, and a welding torch 8 is attached to the torch holder 7. The nozzle tip portion 8a of the welding torch 8 is opposed to the welded region 10 of the fillet welding at a constant interval, and in this state, the motor is driven to rotate the wheel 3 and the copying roller 6 is moved.
By causing the traveling carriage 1 to travel along the standing plate 4, the nozzle tip portion 8a moves along the welded region 10, and the target fillet welding to the lower plate 11 of the standing plate 4 is performed.

[0004]

When the traveling carriage 1 is made to travel by the copying roller 6, the arm 5b on the front side of the traveling is made shorter than the arm 5a on the rear side, and the traveling carriage 1 is moved.
The front side of the is moved slightly inward (toward the standing plate) so that the copying roller 6 does not separate from the standing plate 4. However, since the arms 5a and 5b of the conventional traveling vehicle 1 are fixed to the vehicle body 2 with the arm 5b being shorter than the arm 5a, the traveling vehicle 1 will not move to the standing plate 4 when traveling backward.
Since the vehicle travels outward with respect to the vertical plate 4, the vehicle moves away from the standing plate 4, making it impossible to perform the profile travel. Therefore, the traveling carriage 1 can travel only in one direction with the arm 5b side facing forward, which is inconvenient for work.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object thereof is to make the traveling carriage reliably follow the member to be welded regardless of the traveling direction of the traveling carriage. It is to provide a traveling carriage for welding.

[0006]

In order to achieve the above object, the present invention is constructed as follows. That is, the present invention is a traveling carriage for welding in which a welding torch is mounted and which can travel back and forth along a welded region between a lower plate and a standing plate. Arms protruding from both front and rear portions of the traveling carriage toward the standing plate. Gadai
Slidably fits into the sliding grooves formed on the front and rear sides of the car body
Is forward and backward movably provided on the upright plate side, with the roller profiling to follow the upright plate to the projecting distal end of each arm is provided rotatably, the front and rear of the arm relative to the carriage body
Is rotatably connected by a connecting member, and the connecting member is
It is rotatably supported on the trolley body by using the rotation shaft as a fulcrum.
And the operation lever for rotating operation, and this operation lever
Power transmission device that transmits the operating force of the vehicle as the rotational force of the connecting member
And the operation lever when switching between two-way traveling of the traveling vehicle.
The arm to rotate the connecting member to move the arm
By moving back and forth along the moving groove, the copying roller on the front side of traveling can be retracted more than the copying roller on the rear side of traveling .
And it is configured as a feature that there was Unishi.

[0007]

In the present invention, for example, when performing fillet welding from the left end to the right end of the area to be welded, first, the traveling carriage for welding is disposed on the left end side of the area to be welded, and the operating lever is operated to operate the connecting member. To move the arm back and forth along the sliding groove.
By moving, the arm of the front side copying roller is retracted from the arm of the rear side copying roller , and the front and rear side copying rollers come into contact with the member to be welded.

Then, the wheels are rotationally driven, and the traveling carriage is guided by the copying rollers and travels along the member to be welded. Along with this, the nozzle tip of the welding torch moves along the welded area, and fillet welding is performed in the carriage traveling section. The traveling carriage is stopped when the traveling carriage comes to the end position, that is, the right end of the welded area. Next, the operation lever
Manipulate over, similar to the above, earth connecting member is rotated
If the arm of the copying roller on the rear side is retracted so as to be shorter than the arm on the front side, the carriage is moved back in the opposite direction to perform fillet welding. Is possible.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 8 show the construction of an embodiment of a traveling carriage for welding according to the present invention. In these figures,
Wheels 3 are provided in front, rear, left and right of the trolley body 2 as in the conventional example, and a motor is built in the trolley body 2 inside. As shown in FIG. 4, a motor gear is attached to the output shaft 13 of this motor.
14 is fixed, and the rotational driving force of the motor is the wheel side clutch 15 and the torch driving side clutch of FIG.
16 has been transmitted to. When the wheel side clutch 15 is engaged with the clutch, the rotational driving force from the motor side is transmitted to the gear of the axle 18, and the wheel 3 is rotated. Further, a worm gear 21 that meshes with the gear series is provided on the input side of the torch drive side clutch 16, and the clutch drive of the torch drive side clutch 16 transmits the rotational drive force from the gear series to the worm gear 21 so that the torch drive side. The output shaft 19 of the clutch 16 is rotated. In this embodiment, the rotation control of the motor and the intermittent control of the clutches 15 and 16 are performed by a control circuit (not shown). The control circuit prevents the wheel-side clutch 15 and the torch drive-side clutch 16 from being simultaneously engaged, that is, the clutch 15,
When the clutch is engaged on one side, the clutch on the other side is controlled to be disengaged.

The output shaft 19 of the torch drive side clutch 16 is supported by an upper plate 22 of the bogie main body 2 through a bearing, penetrates through the upper plate 22 and projects upward, and the projecting tip portion thereof has a rotational position. The detection plate 23 is fixed. As shown in FIG. 5, a slide pack 24 having a U-shaped cross section is fixed to the rotation position detecting plate 23. A sliding member 26 is slidably accommodated in a U-shaped accommodation recess 25 of the slide pack 24, and an arm 27 and a holding frame 28 are coupled to the sliding member 26 by bolts or the like. . And
A nozzle holder 30 is fixed to the holding frame 28, and the welding torch 8 is held by the nozzle holder 30. The nozzle tip portion 8a of the welding torch 8 is arranged so as to face the area to be welded at a constant interval.

On the other hand, a guide groove forming plate 31 is fixed to the upper side of the upper plate 22 of the trolley body 2, and the guide groove forming plate 31 is fixed on the upper plate 22.
As shown in FIG. 2, there is a curved guide groove 32 whose center is away from the welded region, that is, which is convex to the right in FIG.
Are formed. A guide cam surface forming plate 29 is superposed and fixed on the upper side of the guide groove forming plate 31, and a guide cam surface 29a is formed on the guide cam surface forming plate 29.

A rolling roller 33 composed of a bearing or the like is rotatably attached to the tip end side of the arm 27, and the rolling roller 33 is inserted into the guide groove 32 of the guide groove forming plate 31. A spring 59 is interposed between the slide pack 24 and the arm 27 in a compressed state, and the rolling force of the spring 59 causes the rolling roller 33 to move to the guide cam surface 29a.
The guide cam surface 29a is urged to roll and move. That is, the slide pack 24 is interlocked with the rotation of the output shaft 19 of the torch drive side clutch 16.
The sliding member 26, the arm 27, the holding frame 28, and the nozzle holder 30 integrally rotate about the output shaft 19 as a fulcrum, and the rolling roller
The reference numeral 33 rolls along the guide cam surface 29a, and with this rolling movement, the welding torch 8 moves back and forth.

That is, in FIG. 2, when the rolling roller 33 is positioned on the C-end side of the guide groove 32, the welding torch 8 is inclined, and its nozzle tip 8a and the welded area 10 have a constant distance ΔL. Face through. From this position, output shaft
When 19 is rotated to roll the rolling roller 33 through the center D portion of the guide groove 32 to the other end portion E, the nozzle tip portion 8a
Rotates about the output shaft 19 by θ. With the rotational movement of the welding torch 8, when the rolling roller 33 first rolls from C to D along the guide cam surface 29a,
As a result of shifting to the right side (the direction away from the welded region 10) in FIG. 2, the sliding member 26 slides in the backward direction with respect to the slide pack 24, and the nozzle tip portion 8a moves in the backward direction.

When the rolling roller 33 is rolled from D to E along the guide cam surface 29a, the nozzle tip portion 8a moves in the advancing direction. That is, the welding torch 8 is connected to the output shaft 19
The nozzle tip 8a can be rotated to L
Of the slide pack 24 along with the guide cam surface 29a.
On the other hand, by sliding the sliding member 26 together with the arm 27, the nozzle tip portion 8a moves along the locus of L '. As described above, in this embodiment, the shape of the guide cam surface 29a is designed such that the nozzle tip portion 8a moves with the welded region 10 at a constant interval ΔL. In this embodiment, a power transmission system that sequentially extends from the output shaft 19 of the torch drive side clutch 16 to the slide pack 24, the sliding member 26, and the holding frame 28 constitutes a rotating mechanism of the welding torch, and is attached to the arm 27. The rolling roller 33, the guide groove 32, and the guide cam surface 29a constitute a forward / backward moving mechanism of the welding torch.

In this embodiment, as shown in FIG. 6, a rolling roller 33 is provided on the circumferential surface of the rotational position detection plate 23 with a C of the guide groove 32.
Position detection recesses 34, 35, 36 are formed at a position corresponding to the rolling position of the end, a portion corresponding to the rolling position of the central D portion, and a position corresponding to the rolling position of the E end, respectively. Also,
A spherical body 37 selectively fitted into the position detecting concave portions 34, 35, 36 is arranged at a fixed position facing the circumferential surface of the rotational position detecting plate 23, and the spherical body 37 is housed in a housing 38. The compressed compression spring 39 constantly presses the circumferential surface of the rotational position detection plate 23. The housing 38 and the like are provided with detection switches (not shown) for detecting the rotational positions at which the position detection recesses 34, 35, and 36 are fitted in the sphere 37, respectively. It is designed to be used.

By the way, as shown in FIG. 2 and FIG.
Sliding grooves 41 are formed on both front and rear sides of the base frame 40 of the trolley body 2, and arms 42 and 43 are slidably fitted in the sliding grooves 41. A copying roller 6 (not shown in FIGS. 1 and 2) is rotatably attached to the tip ends of the arms 42, 43. The arms 42 and 43 are connecting fittings 44
The connection fitting 45 and the connection member 45 are rotatably connected by a pin 46. A rotation support shaft 47 is rotatably inserted in the center position of the connecting member 45, and the lower end side of the rotation support shaft 47 is fixed to the bottom plate of the carriage main body 2. The connecting member 45 is a rotation spindle.
By rotating around 47 as a fulcrum, the arms 42 and 43 are slid forward and backward along the sliding groove 41.

The lower ends of the shafts 48 and 49 are rotatably coupled to the connecting member 45, and the upper end of the shaft 48 is loosely inserted into the upper plate 22 of the carriage main body 2 as shown in FIG. It projects upward from the plate and is connected to the operating plate 51 on the upper side of the upper plate 22.
Further, the shaft 49 is rotatably connected to one end side of the link plate 52 at its upper end side. The lower end of the shaft 50 is rotatably connected to the other end of the link plate 52, and the upper end of the shaft 50 is an upper plate.
22 and loosen it and project it upwards.
It is connected to 51. The base end side of the lever plate 53 is fixed to the center portion of the link plate 52 by welding or the like.
The tip end side of 53 is coupled to the actuation plate 51 via a bolt 54 that passes through the upper plate 22.

As shown in FIG. 7, a cam shaft 61 is fixed to the upper plate 22 of the trolley body 2 so that the operating plate 51 is loosely inserted and protrudes upward. The cam shaft 61 has a disc-shaped cam plate. 55 is rotatably fitted. As shown in FIG. 8, this cam plate 55
Has a cam groove 56 slightly decentered from the center of the cam shaft 61. As shown in FIG.
The lower end side of which is fixed to the operating plate 51 by the pin 57
It is fitted so that it can slide relative to. This cam plate
55 is covered with a casing 58.
58 is integrally fixed to the cam plate 55. The casing 58 is provided with an operation lever 60.

In this embodiment, a cam plate 55 having a cam groove 56 is provided.
And pin 57, actuating plate 51, lever plate 53, link plate 52,
Then, the operating force of the operating lever 60 is used as the turning force of the connecting member 45.
It constitutes a power transmission mechanism for transmission, and also a connecting metal fitting.
44, the connecting member 45, the actuating plate 51, the link plate 52, the lever plate 53, and the shafts 47, 48, 49, 50 that connect the respective members constitute a link mechanism . And this power transmission mechanism and
Constitute a retractable switching mechanism of the arm with a fine link mechanism and the operation lever 60. In this embodiment, micro switches (not shown) for detecting the end position of the reciprocating traveling are provided at the front and rear positions of the traveling vehicle, and this switch signal is applied to the control circuit.

The present embodiment is configured as described above,
The operation will be described below. As shown in the schematic view of FIG. 9, the standing plates 4a, 4 temporarily welded to the lower plate 11
When filleting b between the side plates 9a and 9b, first, when the standing plate 4a is welded from the left end to the right end, first turn the operation lever 60 clockwise to move the cam groove 56 of the cam plate 55. Slides in the clockwise direction with respect to the pin 57, and the pin 57 is locked to the one end K side of the cam groove 56 as shown in FIG. At this time, as described above, since the center position of the cam groove 56 is displaced from the rotation center position of the cam plate 55 by e, the pin 57 is pushed by the cam groove 56 in the direction away from the rotation center of the cam plate 55. The operating plate 51 fixed to the pin 57 is also pushed and moved in the same direction.

The movement lever plate 53 of the actuating plate 51, the link
It is transmitted to the connecting member 45 via the plate 52 , and the connecting member 45 rotates in the clockwise direction in FIG. Due to the rotation of the connecting member 45, the arm 42 slides in the backward direction and the arm 43 slides in the forward direction. As a result, the protruding length of the arm 42 with respect to the carriage main body 2 becomes shorter than the protruding length of the arm 43. When both copying rollers 6 are brought into contact with the standing plate 4a, the traveling carriage 1 is in a state in which the front side is inclined to the standing plate 4a side with respect to the traveling direction.

In this state, the traveling carriage 1 is located at the left end of the welded area 10, the rolling roller 33 is located at the left end C of the guide cam surface, and the nozzle tip portion 8a of the welding torch 8 is in the welded area. Face the left edge of 10. This nozzle tip 8a
The position of is detected by a detection sensor provided in the vicinity of the rotational position detection plate 23, and the detection signal is added to the control circuit. The control circuit recognizes that the nozzle tip portion 8a of the welding torch 8 is at the left end position of the blind spot area 12 based on the detection signal from the detection sensor. When the motor switch is turned on in this state, the torch drive side clutch 16 is engaged with the wheel side clutch 15 disengaged in response to a command from the control circuit.

[0023] Thus, the rotational force of the motor is transmitted to the output shaft 19 of the torch driving clutch 16, the arm 27 is rotated,
The nozzle tip portion 8a of the welding torch 8 moves along the blind spot region 12 of the welded region 10. At this time, the rolling roller 33 rolls from the left end position C of the guide cam surface 29a toward the central portion D in association with the rotation of the arm 27, so that the sliding member 26 moves backward with respect to the slide pack 24. Move and with this,
The nozzle tip portion 8a also retreats in the backward direction, and the nozzle tip portion 8a moves from the left end position of the blind spot area 12 to a position directly below the blind spot area 12 while maintaining a constant distance from the blind spot area 12 to achieve fillet welding of the blind spot area 12. . When the rolling roller 33 rolls to the central portion D of the guide cam surface 29a, the sphere 37 is fitted into the position detecting recess 35 , and the position detecting signal is applied to the control circuit. Upon receiving this signal, the control circuit disconnects the torch drive side clutch 16 and connects the wheel side clutch 15. This wheel side clutch 15
, The rotational force of the motor is transmitted to the wheels 3 and the traveling carriage 1 is guided by the copying rollers 6 to perform fillet welding while traveling in the right direction.

When the traveling carriage 1 hits the right side plate 9b,
The micro switch attached to the trolley body 2 is activated, and the signal from this micro switch is applied to the control circuit. The control circuit receives the signal from the microswitch to disconnect the wheel side clutch 15 and connect the torch drive side clutch 16. The torque of the motor is transmitted to the output shaft 19 of the torch drive side clutch 16 by the coupling of the torch drive side clutch 16.
The arm 27 rotates, and the rolling roller 33 rolls from the D position to the E position along the guide cam surface 29a in association with the rotation of the arm 27. As a result, the nozzle tip portion 8a of the welding torch 8 is in the blind spot area 12 Move from the position directly below to the right end position. Along with this movement, the nozzle tip 8a moves in the advancing direction as it moves to the right end of the blind spot area 12, and as a result, the distance between the nozzle tip 8a and the blind spot area 12 is kept constant, and a suitable corner of the blind spot area is maintained. Meat welding is achieved. The nozzle tip portion 8a is the right end of the blind spot area, that is, the rolling roller 33 is the guide cam surface 29a.
When comes rolling up the right edge E, the sphere 37 is position detection recess 36
It enters and the position detection signal is applied to the control circuit. The control circuit receives this signal and turns off the motor 13. This completes the fillet welding of the standing plate 4a.

Next, when performing toward the left end of the fillet weld of the upright plate 4b from the right end, the traveling vehicle 1 is positioned at the right end of the welding area 10, turning the operating lever 60 in the counterclockwise direction.
Due to the cam action of the cam groove 56 and the pin 57 due to the rotation of the operation lever 60, the operating plate 51 is drawn toward the rotation center direction of the cam shaft 61, and as a result, the connecting member 45 rotates counterclockwise about the rotation support shaft 47. To do. Due to this rotation, the arm 42 slides in the advancing direction and the arm 43 in the retracting direction with respect to the base frame 40, respectively, and as a result, the length from the carriage main body 2 to the copying roller 6 on the arm 42 side follows the copying on the arm 43 side. It becomes longer than the length to the roller 6, and when the copying rollers 6 of both arms 42 and 43 are made to follow the standing plate 4b, the left side of the traveling carriage 1, that is, the front side in the traveling direction faces the standing plate 4b side. And slightly tilt.

In this state, when the device switch is turned on,
The torch drive side clutch 16 is coupled in a state where the wheel side clutch 15 is disengaged by a command from the control circuit, fillet welding from the right end of the blind spot area 12 to a position directly below is performed, and subsequently, the torch drive side clutch 16 is released. Disengaged wheel side clutch 15
Are joined, and the traveling carriage 1 performs fillet welding while traveling to the left. When the traveling carriage 1 comes into contact with the left side plate 9a, the microswitch operates, and the signal of this microswitch is applied to the control circuit. Since the control circuit disengages the wheel side clutch 15 and connects the torch drive side clutch 16, the welded area 10 is maintained when the traveling carriage 1 is stopped.
The fillet weld of the blind spot area 12 occurring at the right end of the is performed.

[0027] According to this embodiment, as described above, the arm
Structure of arm forward / backward switching mechanism for moving 42, 43 forward / backward
The configuration is simple, and the travel carriage can be used for both round trips.
At the time of replacement, operate the operating lever 60 to rotate the connecting member 45.
One-touch operation by just performing a very easy operation
You can freely change the protruding length of the arms 42, 43 by operating the
Is possible, which allows the copying roller on the front side of traveling to
6 is retracted further than the copying roller 6 on the traveling rear side, and welding is performed.
Whether the traveling carriage travels in either direction,
Welding can be performed along the weld area.

The present invention is not limited to the above-mentioned embodiment, and various embodiments can be adopted. For example, in the above embodiment, the guide cam surface 29a is formed on the guide cam surface forming plate 29, but the guide cam surface forming plate 29 is omitted and the guide groove 32 is formed.
A guide cam surface 29a may be formed on the peripheral surface of the. Further, if the rattling of the fitting between the guide groove 32 and the rolling roller 33 is reduced, the spring 59 can be omitted. Further, in the above embodiment, the welding torch 8 is attached to almost the middle portion of the carriage main body 2, but the attachment position of the welding torch 8 can be set arbitrarily. When the attachment position of the welding torch 8 is changed, the rotation range of the welding torch 8 and the torch advance / retreat amount of the torch advance / retreat moving mechanism (guide cam surface 29 so that the blind spot area at the attach position can be welded while the traveling carriage 1 is stopped).
The shape of a) will be set.

In the above embodiment, the rotating mechanism of the welding torch and the moving mechanism of the welding torch for automatically welding the blind spot region 12 before and after the traveling of the traveling carriage are provided, but these are omitted. May be.

Furthermore, forward and backward switching mechanism of the arm in the above embodiment, the movement of the operation lever 60, the section for transmitting a rotational driving force to pivot the shaft 47 of the connecting member 45, the operation plate 51, the link plate 52, Although many members such as a cam plate 55 and shafts 48, 49, 50 are interposed, the arm forward / backward switching mechanism of the present invention rotates the connecting member 45 about the shaft 47 as a fulcrum,
42 and 43 may be a mechanism for loading and unloading advance and retreat, the power converting transmitting the operating force of the operating lever to the rotational force of the connecting member 45
The transmission mechanism is not necessarily limited to the mechanism of the embodiment, and may be configured by a simple link mechanism or the like that directly transmits the movement of the operating lever as the rotational force of the connecting member 45. As an example of this simple link mechanism, for example, a lever plate 53 of FIG. 1 is provided with a shaft hole 61, and the shaft fitted in the shaft hole 61 is used as a fulcrum shaft, and the lever plate 53 is rotated around this fulcrum shaft as a fulcrum. The arms 42 and 43 can be moved back and forth by operating (the bolt 54 is omitted in this case), and in this case, the base end side of the lever plate 53 is a link plate.
It is possible to directly rotatably connect to the connecting member 45 via a pin or the like without connecting to 52 (in that case, the shaft 49,
50 can be omitted).

[0031]

According to the present invention, the mechanism for switching the arm forward / backward for retracting the copying roller on the front side of the traveling from the copying roller on the rear side of the traveling at the time of switching the traveling carriage back and forth , the rotary support shaft, the connecting member, and the operation mechanism. Lever and power transmission mechanism
With the structure having a complex, such as shea cylinder form
A simple structure can be obtained without requiring a structure.

[0032] and, according to the present invention, round-trip of the traveling carriage
Rotate the connecting member by operating the operating lever when switching between running modes
With the extremely easy operation of just
Action length allows you to freely change the protruding length of the arm
It is possible to make a copy of the front side of the running.
The roller should be retracted more than the trailing roller on the traveling side.
You will be able to, even if for running the traveling carriage to either a reciprocating direction, can travel forward side of the traveling carriage in a state in which modeled after the copying roller welded member inclined toward a welded component side that Do not. Thus, the traveling carriage also be run in either direction traveling carriage can be reliably tracing travel along the workpiece to be welded and Do Ri, from this fact,
The fillet welding of the welded area becomes possible regardless of whether the traveling carriage is traveling back and forth, which is very convenient for use.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of an arm advancing / retreating mechanism in an embodiment of a traveling carriage for welding according to the present invention.

FIG. 2 is a plan view of a main part of the traveling vehicle according to the embodiment.

FIG. 3 is a vertical configuration diagram of the welding traveling carriage of the embodiment.

FIG. 4 is a cross-sectional view showing a motor rotation transmission mechanism portion in the embodiment.

FIG. 5 is an explanatory diagram of a coupling relationship between the slide pack and the sliding member of the same embodiment.

FIG. 6 is an explanatory diagram of rotation position detection of a rotation position detection plate.

FIG. 7 is an explanatory diagram of an operation unit of an arm forward / backward switching mechanism.

FIG. 8 is an explanatory diagram of a cam mechanism of the advance / retreat switching mechanism of the arm.

FIG. 9 is a schematic view showing the operation of the same embodiment.

FIG. 10 is a schematic explanatory view of a conventional traveling carriage for welding.

[Explanation of symbols]

1 Traveling vehicle 4, 4a, 4b Standing plate 6 Copying roller 8 Welding torch 9a, 9b Side plate 10 Welded area 11 Lower plate 42, 43 Arm 44 Connecting fitting 45 Connecting member 47 Rotating spindle 51 Actuating plate 55 Cam plate 60 Operation lever

Claims (1)

[Scope of utility model registration request] 1. A traveling carriage for welding, comprising a welding torch and capable of traveling back and forth along a region to be welded between a lower plate and a standing plate, wherein an arm protruding from both front and rear portions of the traveling carriage toward the standing plate. freely sliding in sliding Domizo formed on both front and rear sides of the carriage body
Is fitted to the standing plate so that it can be moved back and forth on the standing plate side, and at the projecting tip side of each arm, a copying roller that imitates the standing plate is rotatably mounted.
The arm is rotatably connected by a connecting member, and the connecting portion
The material is a shaft that can be rotated around the trolley body using the rotation spindle as a fulcrum
The operation lever that is supported and that rotates and this operation
Power that transmits the operating force of the lever as the rotational force of the connecting member
And a transmission mechanism, steering at the time of reciprocal running switching of the traveling carriage
Operate the work lever to rotate the connecting member to move the arm.
Welding the traveling carriage being characterized in that the retract than the running rear side of the copying rollers running front side of the copying rollers by advancing and retracting along said sliding Domizo. In order to achieve the above object, the present invention is constructed as follows. That is, the present invention is a traveling carriage for welding in which a welding torch is mounted and which can travel back and forth along a welded region between a lower plate and a standing plate. Arms protruding from both front and rear portions of the traveling carriage toward the standing plate. Gadai
Slidably fitted in sliding Domizo formed on both front and rear sides of the car body
Is forward and backward movably provided on the upright plate side, with the roller profiling to follow the upright plate to the projecting distal end of each arm is provided rotatably, the front and rear of the arm relative to the carriage body
Is rotatably connected by a connecting member, and the connecting member is
It is rotatably supported on the trolley body by using the rotation shaft as a fulcrum.
And the operation lever for rotating operation, and this operation lever
Power transmission device that transmits the operating force of the vehicle as the rotational force of the connecting member
And the operation lever when switching between two-way traveling of the traveling vehicle.
The arm to rotate the connecting member to slide the arm
By moving back and forth along the moving groove, the copying roller on the front side of traveling can be retracted more than the copying roller on the rear side of traveling .
And it is configured as a feature that there was Unishi. In the present invention, for example, when performing fillet welding from the left end to the right end of the area to be welded, first the traveling carriage for welding is arranged on the left end side of the area to be welded and the operating lever is operated. by rotating the coupling member Te, advancing and retracting along the arm sliding Domizo
By moving, the arm of the front side copying roller is retracted from the arm of the rear side copying roller , and the front and rear side copying rollers come into contact with the member to be welded. Then, the wheels are rotationally driven, and the traveling carriage is guided by the copying rollers and travels along the member to be welded. Along with this, the nozzle tip of the welding torch moves along the welded area, and fillet welding is performed in the carriage traveling section. The traveling carriage is stopped when the traveling carriage comes to the end position, that is, the right end of the welded area. Next, the operation lever
Manipulate over, similar to the above, earth connecting member is rotated
The arm is moved back and forth along the sliding Domizo, if Hikkomere the arms of the rear side of the scanning roller to be shorter than the front side of the arm, by performing the fillet welding traveling vehicle by traveling back in the opposite direction Is possible.