JP2019122991A - Welding bogie - Google Patents

Abstract

To provide a welding bogie which can enhance working efficiency by simplifying a structure and reducing weight.SOLUTION: A welding bogie comprises: a bogie main body 2 which travels by mounting a welding torch T; traveling wheels 4FR, 4RR arranged at left and right both sides of the bogie main body 2; a motor 11 with a reduction gear mounted to the bogie main body 2, and forwardly and reversely rotating the traveling wheel located at a left side of the bogie main body 2; a motor 11 with a reduction gear mounted to the bogie main body 2, and forwardly and reversely rotating the traverse wheels 4FR, 4RR located at a right side of the bogie main body 2; and a control part 6 for controlling a magnitude and a rotation direction of a drive force from the motor 11 with the reduction gear supplied to the traveling wheel located at the left side of the bogie main body 2, and controlling a magnitude and a rotation direction of a drive force from the motor 11 with the reduction gear supplied to the traveling wheels 4FR, 4RR located at the right side of the bogie main body.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a welding carriage mounted with a welding torch and traveling along a welding line.

Conventionally, as a welding truck as described above, there is, for example, one described in Patent Document 1.
This welding cart is a welding cart used for butt welding, and has a bogie main body having a total of four traveling wheels at the front and rear ends, a motor with a reduction gear mounted on the bogie main body, and a motor with a reduction gear A driving force transmission mechanism for transmitting the driving force supplied to the four traveling wheels, a torch supporting portion for supporting the welding torch with one side of the bogie main body facing downward and the tip facing downward, a bogie main body A steering mechanism disposed at the front of the vehicle and a copying roller.

  In this case, the copying roller is provided on one side of the carriage body on which the welding torch is located and extends forward in the traveling direction relative to the welding torch, and between the workpieces to be butt-welded by the welding torch. The position is adjusted so as to be inserted into the V-shaped groove.

  When welding workpieces with each other by this welding carriage, the copying roller is inserted into the V-shaped groove between the workpieces, and the carriage main body is disposed on one of the workpieces. The welding by the welding torch is started, and driving force is supplied from the reduction motor to the traveling wheel through the driving force transmission mechanism to cause the bogie main body to travel along the V-shaped groove during the traveling. The steering mechanism is operated accordingly.

  In this welding carriage, when the carriage body advances to a predetermined welding end position during butt welding, the reduction gear motor is stopped and the carriage body is stopped. Then, after the carriage body is carried to the welding start position and reset, welding with the welding torch is started again, and the carriage body is made to travel along the V-shaped groove.

JP, 2005-138176, A

  However, in the above-described conventional welding carriage, since the traveling direction at the time of butt welding is determined (because of directionality), when multiple passes are required to complete butt welding, the bogie main body is used. It is necessary to carry out the operation of carrying and resetting from the predetermined welding end position to the welding start position for the number of passes, which has a problem that the operation efficiency is poor.

  Further, in the above-described conventional welding carriage, the steering mechanism, which is operated as required at the time of butt welding, is mounted on the carriage body together with the driving force transmission mechanism, resulting in the complication of the structure of the carriage body and an increase in weight. There is a problem in that the problem is solved, and it has been a conventional problem to solve these problems.

  The present invention was made in view of the above-described conventional problems, and it is an object of the present invention to provide a welding carriage capable of enhancing work efficiency while realizing simplification of the structure and reduction of weight. There is.

  According to a first aspect of the present invention, there is provided a bogie main body on which a welding torch is mounted, traveling wheels disposed plurally on the left and right sides of the bogie main body, and the bogie main body mounted on the bogie main body One side drive source for rotating the plurality of traveling wheels positioned forward and reverse, and the other side drive source for rotating the plurality of traveling wheels mounted on the bogie main body and located on the other side of the bogie main body And controlling the magnitude and rotational direction of the driving force from the one-side drive source supplied to the plurality of traveling wheels positioned on one side of the bogie main body and controlling the magnitude and rotation direction of the bogie main body A control unit is provided to control the magnitude and rotational direction of the driving force from the other side drive source supplied to the traveling wheels.

  According to a second aspect of the present invention, in the bogie main body, the one side drive source and the other side drive source are mounted one by one, and all of the plurality of traveling wheels positioned on one side of the bogie main body One side drive power transmission mechanism for transmitting the drive force from the one side drive source, and the other side drive source to all of the plurality of traveling wheels positioned on the other side of the bogie main body It is set as the structure provided with the other side drive force transmission mechanism which transmits a drive force.

  According to a third aspect of the present invention, the plurality of traveling wheels positioned on one side of the bogie main body and the plurality of traveling wheels positioned on the other side of the bogie main body are opposed to each other on one side Each axle of the traveling wheel and the traveling wheel on the other side is supported by the truck body via an equalizer.

  In the welding carriage according to the present invention, in the case of joining the materials to be welded by butt welding, for example, a copying roller provided on the bogie main body is inserted into a V-shaped groove between the materials to be welded and one material to be welded Set on top. When welding by the welding torch is started in this state, the driving force of the same size and the same rotational direction is respectively transmitted to the traveling wheels disposed plurally on the left and right of the truck body from the left and right driving sources When supplied, the carriage body starts traveling along the V-shaped groove.

  Then, when the bogie main body reaches a predetermined welding end position during butt welding, supply of driving force to the left and right traveling wheels from the left and right drive sources is interrupted by a command from the control unit and the bogie main body stops Do.

  After that, according to an instruction from the control unit, driving forces of the same size and in the opposite rotation direction to each other are respectively supplied to the traveling wheels positioned plurally on the left and right of the bogie main body from the left and right drive sources. Then, the carriage body starts traveling in the reverse direction along the V-shaped groove.

  In other words, in the welding carriage according to the present invention, since the forward and backward movement is free (because there is no directionality) by a command from the control unit, even if multiple passes are required to complete butt welding, the carriage There is no need to carry and set the main body from the predetermined welding end position to the welding start position, and the working efficiency is improved.

  Further, in the welding bogie according to the present invention, when the V-shaped groove is curved, the magnitudes of the driving forces supplied from the left and right side drive sources to the left and right traveling wheels have a difference and the left and right Because the steering wheel can be steered by making the rotational speeds of the traveling wheels different from each other, the structure of the bogie main body is simplified and the weight can be reduced because the steering mechanism and the driving force transmission mechanism do not need to be mounted on the bogie main body. It will be.

  At this time, one drive source and one drive source are mounted on the bogie main body one by one, and the driving force from the one drive source is applied to all of a plurality of traveling wheels located on one side of the bogie main body. The carriage main body includes one side driving force transmission mechanism for transmitting, and the other side driving force transmission mechanism for transmitting driving force from the other side drive source to all of a plurality of traveling wheels positioned on the other side of the bogie main body. By mounting it, the structure of the bogie main body can be simplified and the weight can be further reduced.

  Furthermore, in the welding bogie according to the present invention, when there is a step or an undulation which can be broken on the traveling path, the upper and lower sides of the respective axles in the traveling wheels on one side and the traveling wheel on the other side supported by the bogie main body. Since the deviation of the direction is absorbed by the equalizer, it is possible to avoid the hindrance to the traveling of the welding carriage.

  In the welding truck according to the present invention, it is possible to realize the simplification of the structure and the reduction of the weight, and the very excellent effect that it is possible to improve the working efficiency.

It is cross-sectional explanatory drawing from the side direction at the time of butt welding of the welding truck which concerns on one Embodiment of this invention. It is front explanatory drawing of the welding trolley shown in FIG. It is plane explanatory drawing which omitted and showed the upper component from the traveling wheel of the welding truck in FIG. It is front explanatory drawing at the time of fillet contact of the welding truck concerning other embodiments of the present invention. It is the plane explanatory view which omitted and showed the upper component from the traveling wheel of the welding truck in FIG.

Hereinafter, the present invention will be described based on the drawings.
1 to 3 show a welding carriage according to an embodiment of the present invention, and in this embodiment, a welding carriage used for butt welding according to the present invention will be described by way of example. In FIGS. 1 and 3, the movement in the arrow direction is forward movement, and the movement in the opposite direction to the arrow movement is backward movement.

  As shown in FIGS. 1 to 3, the welding carriage 1 has a carriage main body 2 in which traveling wheels 4 are disposed at four locations, front and rear, right and left, a drive unit 10, and a control unit 6 for controlling the operation of the carriage main body 2. The drive unit 10 transmits the driving force from the reduction motor 11 to the reduction gear motor 11 and the traveling wheel 4. The driving force transmission mechanism 20 is provided.

  In this case, two sets of drive units of the left side drive unit 10L and the right side drive unit 10R are mounted on the bogie main body 2, and the speed reducer-equipped motor 11 of the left side drive unit 10L is mounted on the front of the bogie main body 2 Drive the two traveling wheels 4, 4 located on the left side (one side) of the bogie main body 2, and the speed reducer-equipped motor 11 of the right drive unit 10R is mounted on the rear of the bogie main body 2; Drive the two traveling wheels 4, 4 located on the right side (the other side) of

  The driving force transmission mechanism 20 of the left side driving unit 10L includes an output gear 21 mounted on the output shaft 11a of the reduction gear motor 11, an input gear 22 mounted on the front wheel axle 4f of the traveling wheel 4FL on the front left side, and an output A chain 23 extended between the gear 21 and the input gear 22, a transmission gear 24 mounted on the front wheel axle 4f in line with the input gear 22, and an input gear 25 mounted on the rear wheel axle 4r of the traveling wheel 4RL on the rear left side; A chain 26 is provided between the transmission gear 24 and the input gear 25.

  The driving force transmission mechanism 20 of the right side driving unit 10R includes an output gear 21 attached to the output shaft 11a of the reduction gear motor 11, an input gear 22 attached to the rear wheel axle 4r of the rear right traveling wheel 4RR, and an output A chain 23 extended between the gear 21 and the input gear 22, a transmission gear 24 mounted on the rear wheel axle 4r side by side with the input gear 22, and an input gear 25 mounted on the front wheel axle 4f of the front right traveling wheel 4FR , And a chain 26 extended between the transmission gear 24 and the input gear 25.

  In this embodiment, the left and right front wheel axles 4f, 4f and the rear wheel axles 4r, 4r are both connected by an equalizer 12.

  The control unit 6 sets the magnitude of the driving force from the reduction device motor 11 of the left drive unit 10L supplied to the traveling wheel 4FL on the front left side and the traveling wheel 4RL on the rear left side of the bogie main body 2 via the driving force transmission mechanism 20. Of the right drive unit 10R from the reduction gear motor 11 of the right drive unit 10R that supplies the traveling wheel 4FR on the front right side and the traveling wheel 4RR on the rear right side via the driving force transmission mechanism 20 while controlling the speed and rotation direction. Control the magnitude and rotational direction of the driving force.

  The torch support mechanism 30 includes a rail 31 disposed on the carriage body 2 along a direction (left and right direction in FIG. 2) orthogonal to the traveling direction of the carriage body 2 and a slide base 32 capable of reciprocating on the rail 31. , And a weaving unit 33 disposed on the slide base 32.

  The weaving unit 33 reciprocates the slider 35 in the direction orthogonal to the traveling direction of the carriage body 2 by the driving force of the weaving motor 34 fixed to the slide base 32, the slider 35, and the slide base 32 and driving force of the weaving motor 34. A moving device 36 for moving, and a torch clamp that is connected to the slider 35 and supports the welding torch T with the tip Ta of the welding torch T directed downward at one side (left side in FIG. 2) of the carriage body 2 It has 37.

  The slide base 32 can be adjusted in position in the direction orthogonal to the traveling direction of the carriage body 2 by the turning operation of the horizontal knob 38, and the V-shaped groove Wa of the welding torch T supported by the torch clamp 37 can be adjusted. Centering can be performed.

  Further, the weaving unit 33 can adjust the position in the vertical direction by turning the height knob 39, and can adjust the distance with respect to the V-shaped groove Wa of the welding torch T supported by the torch clamp 37. It is supposed to be.

  In addition, this welding carriage 1 is arranged in the front and rear ends of the carriage main body 2 to make the carriage main body 2 travel along the V-shaped groove Wa between the workpieces W and W to be butt-welded by the welding torch T. And a limit switch 8 disposed at the front and rear ends of the carriage body 2.

  The copying mechanism 40 for moving the bogie main body 2 following the V-shaped groove Wa between the workpieces W and W includes a holder 41 having one side surface of the bogie main body 2 on which the welding torch T is positioned extended. The copy roller 42 supported by the holder 41 and inserted into the V-shaped groove Wa between the workpieces W and W, and the groove center detector 43 interposed between the tip of the holder 41 and the copy roller 42 doing.

  In this case, the copying roller 42 is formed such that two umbrella-shaped pieces 42a and 42a are combined to form a beaded abacus as a whole, and by adjusting the distance between the two pieces 42a and 42a, Even a slight step difference of the V-shaped groove Wa can be transmitted to the groove center detector 43.

  When welding workpieces W and W to each other by butt welding in welding cart 1, copying rollers 42 and 42 of copying mechanisms 40 and 40 mounted on bogie main body 2 are placed between workpieces W and W. The truck body 2 is set on one of the workpieces W while being inserted into the V-shaped groove Wa.

  Thereafter, the horizontal knob 38 is rotated to adjust the position of the slide base 32 in the direction orthogonal to the traveling direction of the carriage body 2, and the V-shaped groove Wa of the welding torch T supported by the torch clamp 37 is adjusted. The centering is performed, and the height knob 39 is turned to adjust the vertical position of the weaving unit 33, and the distance between the welding torch T supported by the torch clamp 37 and the V-shaped groove Wa is adjusted. Do.

  Next, when welding is started by the welding torch T while operating the weaving motor 34 of the weaving unit 33 in this state, according to a command from the control unit 6, from the motors 11 with reduction gears of the left drive unit 10L and the right drive unit 10R. The driving wheels 4FL and 4RL located on the left side of the bogie main body 2 and the traveling wheels 4FR and 4RR located on the right side of the bogie main body 2 are respectively supplied with driving forces of the same size and in the same rotational direction. The truck body 2 starts traveling (advances) along the V-shaped groove Wa into which the copying rollers 42, 42 are inserted.

  Then, when the bogie main body 2 reaches a predetermined welding end position during butt welding (when the limit switch 8 detects a predetermined welding end position), each of the left and right drive units 10L and 10R is instructed by the control unit 6 The supply of the driving force to the traveling wheels 4FL and 4RL and the traveling wheels 4FR and 4RR from the reduction gear motor 11 is cut off, and the bogie main body 2 is stopped.

  Thereafter, according to a command from the control unit 6, the traveling wheels 4FL and 4RL on the left side of the truck body 2 and traveling wheels 4FR on the right side of the truck body 2 from the motors 11 with reduction gears of the left drive unit 10L and the right drive unit 10R, The driving force in the reverse direction is supplied to the 4RR with the same size and in any direction so far, and the carriage body 2 starts traveling in the reverse direction along the V-shaped groove Wa (retracts) ).

  That is, in welding cart 1 according to this embodiment, forward / backward movement is possible by the operation of motor 11 with speed reducer of left side drive unit 10L and right side drive unit 10R according to a command from control unit 6 (since there is no directionality ), Even if multiple passes are required to complete butt welding, it is not necessary to carry and reset the carriage body 2 from the predetermined welding end position to the welding start position, thus Efficiency will be improved.

  Further, in the welding cart 1 according to this embodiment, when the V-shaped groove Wa is curved, the reduction gear mounted motor 11 of the left drive unit 10L to the traveling wheels 4FL and 4RL on the left side of the cart body 2 By providing a difference between the magnitude of the driving force supplied and the magnitude of the driving force supplied from the reduction gear motor 11 of the right side drive unit 10R to the traveling wheels 4FR and 4RR on the right side of the truck body 2, Since the steering can be performed by making the rotational speeds of the left traveling wheels 4FL and 4RL and the right traveling wheels 4FR and 4RR different from each other, the steering mechanism need not be mounted on the carriage body 2 together with the driving force transmission mechanism 20. The structure of the truck body 2 is simplified and the weight can be reduced.

  Furthermore, in the welding carriage 1 according to this embodiment, when there is a step or an undulation which can be broken in the traveling path, the left and right front axles 4f, 4f and the rear wheel axles 4r, 4r in the carriage body 2 are connected. Since the equalizer 12 absorbs the vertical displacement between the front wheel axles 4f and 4f and between the rear wheel axles 4r and 4r, any obstacle to the traveling of the welding carriage 1 is avoided.

  FIGS. 4 and 5 show a welding carriage according to another embodiment of the present invention, and in this embodiment, the welding carriage according to the present invention is described using the welding carriage used for fillet welding as an example. Do.

  As shown in FIGS. 4 and 5, the welding carriage 51 according to this embodiment reciprocates in the direction perpendicular to the traveling direction of the carriage body 2 as in the previous embodiment, and the slider 35A It has a weaving unit 33A equipped with a torch clamp 37A connected to support the welding torch T by one side of the carriage body 2 (left side in FIG. 4), and the welding torch T has its tip Ta welded It is diagonally supported by the torch clamp 37A in a state directed to the welding line L between the materials W and W.

  Further, in the welding carriage 51 according to this embodiment, the copying mechanism 40A for causing the carriage body 2 to travel along the welding line L between the materials to be welded W and W is located at the rear of the carriage body 2 in the traveling direction of the welding torch T. A holder 41A, one side of which extends to the side, and a horizontal copying roller supported by the holder 41A in the advancing direction of the bogie main body 2 and in sliding contact with the workpiece W in the vertical direction of the workpieces W, W 42A and 42A, and an interval detection sensor 43A interposed between the tip of the holder 41A and the horizontal copying rollers 42A and 42A.

  The configuration other than the above-described weaving unit 33A and copying mechanism 40A of the welding carriage 51 according to this embodiment is the same as that of the welding carriage 1 according to the previous embodiment, so the description will be omitted.

  In welding carriage 51 having such a configuration, horizontal welding rollers 42A and 42A of copying mechanism 40A mounted on carriage body 2 are welded to the workpiece W when performing fillet welding at the inward corner between workpieces W and W. The welding carriage 2 is set on the workpiece W in the horizontal direction while being in contact with the workpiece W in the vertical direction of W and W.

  Thereafter, the horizontal knob 38 is rotated to adjust the position of the slide base 32 in the direction orthogonal to the traveling direction of the carriage main body 2, and the height knob 39 is rotated to move the lifting unit 33A up and down. Position adjustment in the direction is performed to adjust the distance between the workpiece W, W and the welding line L between the tip Ta of the welding torch T supported by the torch clamp 37A.

  Next, when welding is started by the welding torch T while operating the weaving motor 34 of the weaving unit 33A in this state, according to a command from the control unit 6, from the motors 11 with reduction gears of the left drive unit 10L and the right drive unit 10R. The driving wheels 4FL and 4RL located on the left side of the bogie main body 2 and the traveling wheels 4FR and 4RR located on the right side of the bogie main body 2 are respectively supplied with driving forces of the same size and in the same rotational direction, and the horizontal copying of the copying mechanism 40A The truck body 2 starts traveling (advances) along the workpiece W (welding line L) in the vertical direction with the rollers 42A and 42A in contact with each other.

  Then, when the bogie main body 2 reaches a predetermined welding end position during fillet welding (when the limit switch 8 detects a predetermined welding end position), a command from the control unit 6 causes the left and right drive units 10L and 10R to The supply of the driving force to each of the traveling wheels 4FL and 4RL and the traveling wheels 4FR and 4RR from each of the reducer-equipped motors 11 is cut off, and the bogie main body 2 is stopped.

  Thereafter, according to a command from the control unit 6, the traveling wheels 4FL and 4RL on the left side of the truck body 2 and traveling wheels 4FR on the right side of the truck body 2 from the motors 11 with reduction gears of the left drive unit 10L and the right drive unit 10R, The driving force having the same magnitude and reverse rotation direction to that of 4RR is respectively supplied, and the bogie main body 2 starts traveling in the reverse direction along the welding line L (retracts).

  That is, also in the welding carriage 51 according to this embodiment, forward and backward movement is possible by the operation of the motor 11 with the reduction gear of the left side drive unit 10L and the right side drive unit 10R according to the command from the control unit 6 (there is no directivity So, even if multiple passes are required to finish the fillet weld, the work of carrying and setting the truck body 2 from the predetermined welding end position to the welding start position is not necessary, and therefore Work efficiency will be improved.

  Also, in the welding carriage 51 according to this embodiment, when the workpiece W in the vertical direction is curved (the welding line L is curved), the motor 11 with a reduction gear of the left drive unit 10L The magnitude of the driving force supplied to the traveling wheels 4FL and 4RL on the left side of the truck body 2 and the drive supplied to the traveling wheels 4FR and 4RR on the right side of the truck body 2 from the speed reducer-equipped motor 11 of the right drive unit 10R. Because steering can be performed by making the rotational speeds of the left traveling wheels 4FL and 4RL and the right traveling wheels 4FR and 4RR different from each other with a difference between the magnitudes of the forces, the steering mechanism can be a driving force transmission mechanism. As a result of not being mounted on the carriage body 2 together with 20, the structure of the carriage body 2 is simplified and the weight can be reduced.

  In each of the above-described embodiments, the traveling wheels 4FL located on the left side of the bogie main body 2 are mounted on the bogie main body 2 one by one on the left with the reducer-equipped motor 11 and one on the right with the decelerator equipped motor 11. The driving force transmission mechanism 20 on the left side that transmits the driving force from the reduction gear motor 11 on the left side to both sides of 4RL, and the right side to both traveling wheels 4FR and 4RR located on the right side of the bogie main body 2 The drive power transmission mechanism 20 on the right side for transmitting the drive power from the reduction gear motor 11 is mounted on the carriage main body 2, but the present invention is not limited to this.

  As another configuration, for example, traveling wheels 4FR and 4RR located on the right side of the bogie main body 2 with the wheel-in motor (one side drive source) disposed on both the traveling wheels 4FL and 4RL located on the left side of the bogie main body 2 The wheel in motor (the other side drive source) is arranged on both sides, and the control unit 6 determines the magnitude and rotational direction of the driving force of the wheel in motor incorporated in the traveling wheels 4FL and 4RL located on the left side of the truck body 2 While controlling, it is also possible to control the magnitude and rotation direction of the wheel-in motor incorporated in the traveling wheels 4FR, 4RR located on the right side of the carriage main body 2.

  The configuration of the welding carriage according to the present invention is not limited to the configuration of the above-described embodiment.

DESCRIPTION OF SYMBOLS 1 welding carriage 2 carriage body 4FL, 4RL traveling wheels 4FR, 4RR located on the left side of the welding carriage traveling wheels 4 f located on the right side of the welding carriage front wheel axle 4r rear wheel axle 6 control unit 11 motor with reduction gear (one side drive source And other side drive source)
12 Equalizer 20 Drive Force Transmission Mechanism (One-side Drive Force Transmission Mechanism and Other-side Drive Force Transmission Mechanism)
T welding torch

Claims (3)

A dolly body on which a welding torch is mounted;
A plurality of traveling wheels disposed on the left and right sides of the dolly body;
One side drive source mounted on the bogie main body and rotating forward and reverse of the plurality of traveling wheels positioned on one side of the bogie main body;
The other side drive source which is mounted on the carriage body and rotates the plurality of traveling wheels disposed on the other side of the carriage body.
The magnitude and rotation direction of the driving force from the one-side drive source supplied to the plurality of traveling wheels located on one side of the carriage body are controlled, and the plurality of teeth located on the other side of the carriage body are controlled. A welding carriage provided with a control unit for controlling the magnitude and rotational direction of the driving force from the other side drive source supplied to the traveling wheel.   The one side drive source and the other side drive source are mounted one by one on the bogie main body, and the one side drive source is used for all of the plurality of traveling wheels positioned on one side of the bogie main body. One-side driving force transmission mechanism for transmitting the driving force, and the other-side driving force for transmitting the driving force from the other-side drive source to all of the plurality of traveling wheels located on the other side of the bogie main body The welding carriage according to claim 1, further comprising a transmission mechanism.   The traveling wheels on one side and the traveling wheels on the other side of the plurality of traveling wheels located on one side of the bogie main body and the plurality of traveling wheels located on the other side of the bogie main body The welding truck according to claim 1 or 2, wherein each axle of is supported by the truck body via an equalizer.

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