JPH05305494A - Travelling truck for welding - Google Patents

Abstract

PURPOSE:To obtain a travelling truck which can be loaded on a guide rail or unloaded from it at an arbitrary position and of which loading/unloading operation is simple. CONSTITUTION:A first clutch means 15 is provided by which the travelling wheels 13c, 13d which are provided on one side of the truck body 11 of the travelling truck 10 are moved in the width direction of the guide rail 1 and locked at two positions. Then, a second clutch means 30 is provided by which a pinion 50 and a motor 51 to drive this pinion 50 are moved in the width direction of the guide rail 1 and locked at the two positions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is equipped with welding equipment,
The present invention relates to a traveling carriage for welding that performs self-propelling on a rail and performs welding, cutting, and the like of a workpiece in all postures.

[0002]

2. Description of the Related Art For example, in an arc welding device, a control device,
A traveling carriage loaded with each axis drive motor, wire feeder, wire reel, etc. is mounted on a rail, self-propelled at a welding speed to move an arc along a welding line, and welding of a workpiece is automatically performed. There are things I tried to do.

FIG. 9 is a schematic view showing an example of mounting the traveling carriage on a guide rail in the above welding apparatus (see Japanese Patent Laid-Open No. 57-60110). In the figure, 60
Is a guide rail laid on the floor or the like, and guide portions 61a and 61b provided with inclined surfaces of 45 ° are formed above and below both ends to hold the traveling carriage in all postures.
Reference numeral 62 denotes a rack provided on the upper surface of the guide rail 60 in the length direction thereof. Reference numeral 63 denotes a traveling carriage on which a control device, a motor and the like are loaded, and a pair of traveling wheels 65a are provided above and below traveling wheel mounts 64a and 64b fixed to the inside of both side walls thereof at an angle of 45 ° with respect to the plane. , 65b and 65c, 65d are attached, and a pinion 66 that engages with the rack 62 of the guide rail 60 is provided on the lower surface. The pinion 66 is driven by a motor (not shown) mounted on the traveling carriage 63.

Such a traveling carriage 63 is located at an end portion of a guide rail 60 laid on the floor or the like, and traveling wheels 65a, 65b, 65c, 65d provided on both side walls are provided at both end portions of the guide rail 60, respectively. Provided guide portions 61a and 61b
And the pinion 66 is engaged with the rack 62 and mounted on the guide rail 60. Then, the pinion 6 that meshes with the rack 62 provided on the guide rail 60.
6 is driven by a motor to drive the traveling carriage 63 to the guide rail 60.
The workpiece is welded by traveling at the welding speed.
At this time, the traveling carriage 63 has the traveling wheels 65a, 65b, 6
Since the guide rail 60 is held from both sides by the 5c and 65d, the guide rail 60 will not be detached from the guide rail 60 and derailed during welding.

[0005]

In the traveling carriage for welding constructed as described above, the traveling wheels 65a, 65b, 65c, 65d of the traveling carriage 63 are connected to the guide portion 61a of the guide rail 60 from the end portion of the guide rail 60. Since the pinion 66 is fitted to the rack 62 while being fitted to the rack 61a, the mounting work is not only extremely surface side, but also between the end of the guide rail and the wall or obstacle. One running space was required, and the traveling carriage 63 could not be mounted on the guide rail 60 in a narrow space. In addition, for some reason, the traveling carriage 63 is in the middle of the guide rail 60.
I couldn't get off even though I wanted to get off from the guide rail 60. Further, even if the distance between the rack 62 and the pinion 66 varies due to the warp or bending of the guide rail 60 itself, the engagement between the rack 62 and the pinion 66 cannot be sufficiently secured.

The present invention has been made to solve the above-mentioned problems, and a traveling carriage can be mounted on or removed from a guide rail at an arbitrary position, and the attachment / detachment operation is simple, and it can be mounted on a rack during traveling. The purpose of the present invention is to obtain a traveling carriage for welding in which the relative position of the pinion can be kept constant.

[0007]

In a traveling carriage for welding according to the present invention, a traveling wheel provided on one side of the traveling carriage can be moved in the width direction of a guide rail and locked at two positions.
And a second clutch means capable of moving the pinion and a motor for driving the pinion in the width direction of the guide rail and locking the pinion at two positions.

Further, the first clutch means is provided with an urging means for urging the traveling wheels toward the guide portion side of the guide rail, and the second clutch means is provided with an urging means for urging the pinion toward the rack side. It is a thing.

[0009]

When the traveling carriage mounted on the guide rail is lowered from the guide rail, the first locking means of the first clutch means is released to move the traveling wheels in the direction away from the guide portion of the guide rail. , And is locked by the second locking means. Further, the first lock means of the second clutch means is released to move the motor and the pinion in the direction away from the rack, and the second lock means locks. As a result, the traveling wheels and the pinion are separated from the guide portion and the rack, respectively, and can be lowered from the guide rails by lifting the traveling carriage.

To mount the traveling carriage on the guide rail,
Place the traveling carriage on the guide rail in the above state, and
The second lock means of the clutch means is released to move the first clutch means, and the traveling wheel is brought into contact with the guide portion of the guide rail to be locked by the first lock means. Further, the second lock means of the second clutch means is released and the second clutch means is moved, and the pinion is engaged with the rack and locked by the first lock means. As a result, the traveling wheel slides on the guide portion of the guide rail, and the pinion meshes with the rack. Therefore, by driving the motor to rotate the pinion, the traveling carriage travels on the guide rail.

[0011]

1 is a vertical sectional view schematically showing an embodiment of the present invention, and FIG. 2 is a plan view thereof. In the figure, 1 is a guide rail made of an aluminum alloy mold material for ease of manufacturing and weight reduction, and a substantially triangular guide portion having 45 ° inclined surfaces with respect to a horizontal plane above and below both ends. Two
a and 2b are provided, and the rack 3 is fixed to the upper surface in the length direction. In addition, the attachment means to the floor surface etc. is omitted.

Reference numeral 10 is a welding traveling carriage mounted on the guide rail 1, 11 is a carriage main body having a substantially U-shaped cross section, and the guide rail 1 is attached to the traveling wheel mounting base 12 fixed to the inner side of one side wall. The traveling wheels 13a and 13b are attached to hold the guide portion 2a and make sliding contact. Reference numeral 15 is a first clutch mechanism provided on the other side wall of the bogie main body 11, the configuration of which will be described below with reference to FIGS. 3 and 4.

Reference numeral 17 denotes a cylindrical first member slidably fitted in a hole of a clutch guide 16 provided on a side wall of the carriage main body 11.
This is the clutch body. Reference numeral 18 is a traveling wheel mounting base having a collar portion 19 at one end and a mounting base 20 at the other end. The collar portion 19 is slidably accommodated in the clutch body 17, and the mounting base 20 has a guide rail. Traveling wheels 13c and 13d that hold the guide portion 2b of No. 1 and are in sliding contact are attached.

Reference numeral 21 is an adjusting screw having one end fixed to the traveling wheel mount 18 and the other end slidably protruding from the clutch body 17. Reference numeral 22 denotes a spring that is interposed between the flange portion 19 of the traveling wheel mounting base 18 and the clutch body 17, and constantly urges the traveling wheel mounting base 18, and thus the traveling wheels 13c and 13d, toward the guide rail 1 side. .. Reference numeral 23 is a wing nut that is screwed into the adjusting screw 21 and regulates the position of the traveling wheel mount 18. Reference numerals 24a and 24b denote stopper grooves provided on the upper portion of the clutch body 17 at a predetermined distance.

Reference numeral 25 denotes a housing fixed on the carriage main body 11, and a stopper groove 24a of the clutch main body 17 is provided at a front end portion thereof.
Alternatively, a stopper 26 having a substantially inverted T-shaped cross section having a stopper piece 27 that fits into either of the stoppers 24b and 24b is accommodated, and a spring 28 is interposed between the stopper 26 and the housing 25 so that the stopper 26 is constantly lowered. I am urged. Reference numeral 29 is a knob provided on the upper end of the stopper 26.

Reference numeral 30 denotes a second clutch mechanism provided on the main body 11 of the carriage, the structure of which will be described below with reference to FIGS. 6 and 7. Reference numeral 31 is a gate-shaped stand provided on the carriage main body 11, and a second clutch main body 32 is slidably disposed between both legs of the stand via a clutch guide 33. Three
Reference numeral 5 denotes a housing screwed into a screw hole 34 provided in the clutch body 32.
It is fixed at 2.

Reference numeral 37 denotes a cross-shaped connecting rod which has a flange portion 38 and is slidably accommodated in the housing 35. A part of the connecting rod protrudes from the housing 35, and is provided between the flange portion 38 and the housing 35. It is constantly urged to the left in the figure by a spring 39 interposed in the. Reference numeral 40 denotes a first stopper groove provided on the upper surface of the clutch body 32, 41 denotes a second stopper groove provided at a predetermined distance from the stopper groove 40, and the first stopper groove 40 side has a gently inclined surface. It has become.

Reference numeral 42 denotes a stopper mounted on the upper member 31a of the stand 31 so as to be slidable up and down. A stopper piece 43 is attached to the tip of the stopper and is constantly urged downward by a spring 44. Reference numeral 45 is a knob provided on the upper end of the stopper 42.

Reference numeral 50 is a pinion meshing with the rack 3 of the guide rail 1, 51 is a motor for driving the pinion 50, which is slidably mounted on a base 46 fixed to the carriage main body 1, and a second motor. It is connected to the connecting rod 37 of the clutch mechanism 30. Reference numeral 55 is a welding machine loaded on the carriage main body 11.

Next, the operation of the present invention configured as described above will be described. First, as shown in FIG. 1, a traveling carriage 1 mounted on a guide rail 1 laid on the floor or the like along a welding line.
The operation of removing 0 from the guide rail 1 will be described. As shown in FIG. 3, the knob 29 of the first clutch mechanism 15 is pulled up against the spring 28, and the stopper piece 27
Is pulled out from the slide groove 24a of the first clutch body 17. In this state, the clutch screw 17 is slid to the right in the drawing along the clutch guide 16 with the adjusting screw 21 in hand, and the knob 29 is released when the stopper groove 24b is located under the stopper piece 27. As a result, the stopper 26 is biased by the spring 28 and descends, and the stopper piece 27 is fitted into the stopper groove 24b as shown in FIG.
Lock 7 and hold in that position.

At this time, the traveling wheels 13c and 13d move to the right in the figure by the distance L ₁ between the stopper grooves 24a and 24b together with the clutch body 17, so that the traveling wheels 13c and 13d are moved to the guide rails as shown in FIG. 1 guide part 2b
To leave completely.

Then, the knob 45 of the second clutch mechanism 30 is held in the hand and pulled up, the stopper piece 43 is pulled out from the stopper groove 40 of the second clutch body 32, and the motor 51 is handed in that state. The knob 45 is released while sliding to the right in FIG. 6 together with the clutch body 32 connected thereto. As a result, the stopper piece 43 descends along the inclined surface of the stopper groove 41 and locks the clutch body 32 when reaching the deepest portion as shown in FIG. This also holds the motor 51 in that position.

At this time, since the motor 51 moves to the right in the figure by the distance L ₂ between the stopper grooves 40 and 41 as shown in FIG. 8, the reference pitch line when the pinion 50 is also meshed with the rack 3. It moves from 0-0 to 0 ₁ -0 ₁ and completely separates from the rack 3.

By the above operation, the traveling wheels 13c and 13d of the traveling carriage 10 are disengaged from the guide portion 2b of the guide rail 1 and the pinion 50 is disengaged from the rack 3, so that the traveling wheels 13b are not interfered with by the guide portion 2a. As described above, the traveling carriage 10 can be removed from the guide rail 1 by lifting the carriage body 11 upward while slightly moving it to the left in the drawing.

Next, a procedure for mounting the traveling carriage 10 on the guide rail 1 will be described. In addition, the first and second clutch mechanisms 15 and 30 connect the traveling carriage 10 to the guide rail 1.
It is assumed that it has been removed from. First, the trolley body 1
1 on the guide rail 1 and the traveling wheels 13a, 13
b is brought into contact with the guide portion 20, and the carriage main body 11 is held substantially horizontal. Then, the first clutch mechanism 15
Of the stopper groove 27 to pull up the knob 28 of the stopper groove 2
4b, the clutch body 17 is pushed in to position the stopper groove 24a under the stopper piece 27 as shown in FIG. 3, and the knob 28 is released to fit the stopper piece 27 into the stopper groove 24a as shown in FIG. ..

As a result, the traveling wheels 13c and 13d hold the guide portion 2b of the guide rail 1 and make sliding contact with it. At this time, the guide portions 2a and 2b of the guide rail 1
When the distance between the traveling wheels 13a, 13b, 13c and 13d is tight or loose, the wing nut 23 causes the screw 21
Further, the traveling wheel mounting base 18 attached to this is moved forward or backward, and the traveling wheels 13c and 13d are adjusted so as to slidably contact the guide portion 2b in an optimum state.

Next, when the knob 45 of the stopper 42 of the second clutch mechanism 30 is pulled up and the second clutch main body 32 is pushed in, the inclined surface of the stopper groove 41 of the clutch main body 32 moves along the stopper piece 43. Then, the stopper piece 43 fits into the stopper groove 40 and stops. At this time, the motor 51 connected to the connecting rod 37 of the clutch body 32 also moves at the same time, the pinion 50 meshes with the rack 3, and the state shown in FIG. 1 is obtained.

In the traveling carriage 10 mounted on the guide rail 1 as described above, the pinion 50 is driven by the motor 51.
Is rotated to travel along the guide rail 1. In addition, even if the width of the guide rail 1 is slightly wide during traveling, the traveling wheels 13c and 13d are not supported by the spring 2
Since it is buffered by 2 and is always in sliding contact with the guide portion 2b, it does not come off from the guide rail 1. Even if the rack 3 is slightly bent, the connecting rod 37 to which the motor 51 is connected is buffered by the spring 39 so that the pinion 50 always meshes with the rack 3 with certainty.
There is no risk of disengagement with.

[0029]

As described above in detail, in the traveling carriage for welding according to the present invention, the traveling wheel provided on one side can be moved in the width direction of the guide rail to be locked at the two positions. Since the pinion and the motor for driving the pinion are moved in the width direction of the guide rail and the second clutch means for locking the pinion at the two positions are provided, the traveling carriage is mounted on the guide rail at any position. Or it can be removed from the guide rail, and the operation is easy. Further, since the traveling carriage can be mounted on or lowered from the guide rail even in a narrow place, the range of use can be greatly expanded.

Further, the first clutch means is provided with an urging means for urging the traveling wheels toward the guide portion side of the guide rail, and the second clutch means is provided with an urging means for urging the pinion toward the rack side. Therefore, even if the width of the guide rail is slightly wider or narrower or the rack is slightly bent, it is buffered by the biasing means, so that the traveling carriage can always travel smoothly.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of the present invention, a part of which is shown in section.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged sectional view of a first clutch mechanism in FIG.

FIG. 4 is a side view of FIG. 3 with a partial cross section.

5 is an explanatory view of the operation of FIG.

FIG. 6 is an enlarged sectional view of a second clutch mechanism in FIG.

FIG. 7 is a side view of FIG.

FIG. 8 is an explanatory view of the operation of FIG.

FIG. 9 is a schematic view showing a main part of a conventional traveling carriage for welding.

[Explanation of symbols]

 1 guide rail 2a guide part 2b guide part 3 rack 10 traveling dolly 11 dolly main body 12 traveling wheel mounting base 13a traveling wheel 13d traveling wheel 15 first clutch mechanism 17 clutch main body 18 traveling wheel mounting base 21 adjusting screw 22 spring 23 wing nut 24a Stopper groove 24b Stopper groove 26 Stopper 27 Stopper piece 28 Spring 29 Knob 30 Second clutch mechanism 32 Clutch body 35 Housing 37 Connecting rod 39 Spring 40 Stopper groove 41 Stopper groove 42 Stopper 43 Stopper piece 45 knob 50 Pinion 51 Motor

Claims (2)

[Claims] 1. A guide rail having guide portions at both ends and having a rack attached to an upper surface thereof, and traveling wheels on both sides slidably contacting guide portions of the guide rail, and a pinion engaging with the rack on a lower surface thereof. It is provided with a traveling carriage on which the drive motor for the pinion, welding equipment, etc. are mounted on the upper surface, and the traveling carriage is mounted on the guide rails for traveling to carry out all postures such as welding and cutting of the workpiece. The traveling vehicle for welding performed in step 1, wherein traveling wheels provided on one side of the traveling vehicle can be moved in the width direction of the guide rail and locked at two positions.
And a second clutch means capable of moving the pinion and a motor for driving the pinion in the width direction of the guide rail and locking the pinion in two positions. .. 2. The first clutch means is provided with a biasing means for biasing the traveling wheel toward the guide portion side of the guide rail, and the second clutch means is provided with a biasing means for biasing the pinion toward the rack side. The traveling carriage for welding according to claim 1, wherein the traveling carriage is for welding.