JPS5844953Y2 - Automatic running device for thin plates - Google Patents

Description

[Detailed description of the invention] Conventionally, in a trolley that presses a thin plate material from both sides with rollers and runs by the friction force, a pressure roller 1 is used as shown in Fig. 1.
By tilting the bogie by 2 to 3 degrees in the direction of travel, it was possible to ensure stable running or to prevent the bogie from floating off the thin plate material and from derailing.

However, in this conventional method, when a traveling trolley 3 is engaged with a vertical member 2 as shown in FIG. If the motor is reversed, the cart will come off the member 2 due to the inclination of the pressure roller 1, and will eventually fall.

For this reason, a worker must necessarily climb to the top of the vertical member 2 to remove the traveling carriage 3, which poses a problem in terms of reducing man-hours and saving labor.

In addition, 4 in FIG. 1 is a material to be welded, 5 is a guide roller, and 6 is a gear for transmitting driving force.

The present invention was proposed in order to eliminate the above-mentioned drawbacks of the conventional technology.The pressure roller is shaped like an inverted cone, so that the pressure roller moves forward and backward as if it were wedged into a thin plate. In combination with guide rollers attached to the top and rear, we have developed a trolley that can run stably parallel to the edge of the thin plate in any position, and can be raised and lowered completely by remote control, reducing welding man-hours. It is an object of the present invention to provide an automatic traveling device for thin plates that can significantly reduce the number of inspection steps.

The embodiment of the present invention will be explained below with reference to the drawings. In Figs. 3 to 6, 7a, 7b, 8a, 8b are the outer frames of the pressure rollers 9a, 9b, 10a, 10b, and these left and right outer frames 7a and 7b and 8a and 8b are connected at the center by shafts 11a and 11b, and a spring 12a is attached to the same shafts 11a and 11b.

12b, 13a, and 13b apply pressure to the outer frame? a
, 7b and 8a, 8b are pressurized Cl-ra 9a.

9b, 10a, and 10b.

The pressure rollers 9a, 9b, 10a, and 10b are formed into an inverted conical appearance using a member such as a rubber material having a high friction coefficient on a steel shaft.

14a. 14b and 15a, 1 sb, (15
a, 15b are omitted) are pressure rollers 9a, 9b.
and 10a.

Bearing 10b, front and rear bearings 14a, 15a and 14
b, 15b are connected by connecting plates 16a and 16b, respectively,
The bearing 1 supported by outer frames 7a, 7b and 8a, 8b
4a, 14b and 15a.

15b is prevented from rotating.

17a, 17b and 18a, 18b are pressure rollers 9, respectively.
a, 9b and 10a, 10b, of which the shaft 17b on the left in Fig. 4 is longer than the shaft 17a on the right in order to attach the gear 19 and sprocket 20a for transmitting driving force (rotational force). It has become.

Further, a worm 21 is meshed with the gear 19.

22 is a chain for transmitting driving force to the pressure roller 10b, and is hung between the sprockets 20a and 20b.

23 is a drive motor; 24a and 24b are guide rollers attached to the front and rear of the truck; 25a and 25b are bearings for the guide rollers 24a and 24b; 26 is a welding torch mounted on a tower;
27a, 27b connect the pressure rollers 9a, 9b to the workpiece 28
．． This is a compression spring that is biased to press against the edge portions 28a and 29b of 29.

Next, the action will be explained.

Here, FIG. 6 shows the movement of the traveling truck, that is, the pressure roller 9b on the left side of the truck.

The movement of 10b will be explained.

Note that FIG. 6 shows a state in which the materials to be welded 28 and 29 are sufficiently pressurized by the pressure roller.

Now, when the motor 23 is rotated forward in this state, the gear 19,
The pressure roller 9b is rotated via the worm 21, and the pressure roller 10b is rotated by the chain 22.

Since the pressure rollers 9b and 10b have an inverted conical shape, when they rotate in the normal direction, the pressure rollers press the edges 29a of the welded materials 29, 28 as indicated by the solid arrow X in FIG.

It sinks into 28a.

However, due to the front and rear guide rollers 24a and 24b, the cart moves in parallel along the edge of the edge 29a of the workpiece 29 to be welded.

Next, when the motor 23 is reversed, the pressure roller 9b.

10b is the edge portion 29a of the welded material 29 as indicated by the dotted arrow Y.
The blade, which moves backward as if wedged in, also runs parallel and stably along the edge of the hem due to the front and rear guide rollers 24a and 24b.

FIG. 4 shows edge portions 28a of welding materials 28 and 29.

When the entire surface of 29a is in contact, FIG.
This is the case where only the ends of a and 29a are in contact, but since the outer frames 7a, 7b, 8a, and 8b are hinge-shaped at the center, the falling is related to the 28° 290 alignment accuracy of the welded materials. No pressure rollers 9a, 9b.

10a and 10b are edge portions 28a of the welded material 28.29,
Closely attached to 29a.

Since the present invention is constructed as explained in detail above,
Even if the drive mechanism of the device, which runs while pressing a thin plate material such as a workpiece to be welded from both sides with a pressure roller, is reversed, the pressure roller is configured in an inverted conical shape, and the pressure roller will press the thin plate material from both sides as it moves forward. Because the machine drives backwards without coming off the same thin plate material, for example, in the case of welding, where previously only one machine could be operated by one person, one person can remotely control several machines, reducing man-hours and labor. can.

Although the above-mentioned embodiment shows the case where the device of the present invention is applied to welding, the present invention can also be applied as an automatic inspection trolley for non-destructive inspection after welding of thin plate structures such as underground LNG tanks.

[Brief explanation of the drawing]

Figure 1A is an explanatory diagram showing the state of inclination of the pressure roller of a cart that runs using the frictional force of a conventional pressure roller. FIG. 1 is a perspective view showing the state in which the traveling trolley moves up and down, FIG. 3 is a plan view of an automatic traveling device showing an embodiment of the present invention, FIG. 4 is a sectional view of the same side, and FIG. 5 is the same as FIG. FIG. 6 is a side sectional view when the present invention is applied to different materials to be welded, and is an explanatory diagram showing the movement of the traveling truck. Explanation of the main parts of the diagram,? a, 7b, 8a, 8b...
・Outer frame, 9a, 9b, 10a, iob...
...Pressure roller, 11a, 11b...A shaft connecting the left and right outer frames, 12a, 12b, 13a, 13b=-
--- Spring that applies pressure to the pressure roller via the outer frame, 1
9... Gear, 20a, 20b... Sprocket, 21... Worm, 22...
・Chain, 23... Motor, 24 a,
24 b==Guide roller, 28.29... Material to be welded, 28a, 29a... Edge portion (thin plate material)
.

Claims (1)

[Scope of utility model registration request] In an automatic traveling device that uses a thin plate material such as a material to be welded or a material to be inspected as a rail and pressurizes both sides of the same thin plate material with a plurality of rollers having a large coefficient of friction, the pressure roller is configured to have an inverted conical shape. In addition, one of the same rollers on one side of the thin plate material is a driving side driven by a drive mechanism mounted on the traveling device, and the other is a driven side, and at the front and rear of the pressure roller. An automatic traveling device for thin plates, characterized in that guide rollers are provided which roll in contact with the ends of the thin plates, and the guide rollers and the pressure rollers are integrally connected.