KR20090043054A - The automatic welding machine for crane boom - Google Patents

Abstract

The present invention relates to an automatic welding device for a boom for a crane, in order to automatically produce a welding boom of the crane boom was performed by hand mainly to form a high quality welded part and to produce a boom of various specifications while easy to mass production Developed;

A die formed longer than the length of the boom used for the crane, and protruding rails formed in the longitudinal direction on both sides of the upper surface;

A transfer bed having a plurality of rollers rotating in close contact with the protrusions and the upper surface corresponding to both sides of the protruding rails of the die, and the boom assembly positioned on the upper surface;

A drive unit allowing the transfer bed to reciprocate along the rail;

At least one vertical frame fixedly connected to the die, a horizontal frame mounted on the vertical frame to be transported and fixed in a vertical direction, and welded to the horizontal frame to be transported and fixed in a horizontal direction It relates to a crane boom automatic welding device, characterized in that consisting of a welding portion made of a torch.

Crane, boom, welding

Description

Automatic welding machine for crane boom {The automatic welding machine for crane boom}

The present invention relates to an automatic welding device for a crane boom, which will be described in more detail, while automatically welding the crane boom, which is made by hand, while working more precisely and productively, and also being developed to be compatible with products of various specifications. Relates to a device.

Generally, a crane is a crane, which is a device that lifts heavy materials and moves them in the vertical and horizontal directions, and has been developed in various forms depending on the working environment and its use.

Among the fixed cranes, there are truck cranes mounted on a mobile vehicle, that is, a truck, etc. In this case, FIG. 6 is a side view showing a general shape of a mobile crane, in which the lower traveling body is mounted with a crane 1 in a truck chassis. It shows the shape, which has the advantage of excellent maneuverability in good road conditions.

In addition, the truck crane is provided with a boom assembly having a predetermined length, wherein the boom assembly is configured such that the inclination angle is adjusted, the plurality of booms (11) are inundated by the hydraulic operation to the winding and unwinding in the desired work space It is operated so that the hook 12 which is lifted by it can be positioned.

Here, the boom assembly to be mounted on the truck crane is usually arranged by coaxially arranged a number of booms 11 having different sizes, and is selectively multi-stage by the hydraulic cylinder installed inside each of these booms 11 It is a configuration that is contracted by being stretched and operated in the reverse order.

7 is an exploded perspective view showing the assembly of the boom, wherein the boom 11 constituting the boom assembly includes a pair of vertical plates 11v for forming a side plate of a plate member having a predetermined length, It consists of a pair of horizontal boards 11h which are located on the upper and lower sides of the pair of vertical plates 11v and are joined by welding.

The manufacturing process of such a boom is to cut the iron plate in the form of a boom development with a laser processing machine, and then to produce a boom single piece by manufacturing and welding the boom in a bending machine, and assembling these three into one set to produce a three-stage boom.

The conventional boom welding process relies on manual labor and requires a relatively precise welding degree from cutting of the material to welding because three booms must be assembled in a set.

In other words, in the production of booms, it is possible to prevent warping of materials during welding, and to develop flexible jigs suitable for small quantity batch production systems, and weld line tracking technology and materials that can cope with dimensional errors during material deformation, cutting and bending during welding. The setting of welding conditions according to the thickness has a difficulty that should be considered as an important technical part.

In other words, in order to proceed in detail and to manufacture various kinds of booms, the conventional manual work was performed, but the decrease in productivity and the increase in unit cost have been a problem.

The present invention has been developed to solve the above problems, the object is to be made automatically the welding production process of the boom was carried out by hand.

In addition, there is a development of a device capable of producing booms of various shapes.

In addition, the present invention is to develop an apparatus in which uniform and good welding is achieved by effectively cooling heat generated in a welding torch.

In order to achieve the above object, the present invention includes a die formed longer than the length of the boom used in the crane and protruding rails are formed in the longitudinal direction on both sides of the upper surface;

A transfer bed having a plurality of rollers rotating in close contact with the protrusions and the upper surface corresponding to both sides of the protruding rails of the die, and the boom assembly positioned on the upper surface;

A drive unit allowing the transfer bed to reciprocate along the rail;

At least one vertical frame fixedly connected to the die, a horizontal frame mounted on the vertical frame to be transported and fixed in a vertical direction, and welded to the horizontal frame to be transported and fixed in a horizontal direction It is characterized by consisting of a welding portion made of a torch.

In addition, the transfer bed is characterized in that the protruding boom working block to lift the boom is spaced apart from the upper surface of the bed, and the reference block for confirming the position of the boom is also characterized in that the projected to the spaced apart at a predetermined interval.

The drive unit may include a motor extending in an upward direction from a lower portion of the die, and a pinion mounted to an upper end of the motor, and a rack formed in a lengthwise direction under the transfer bed may be interlocked with the pinion. It is characterized in that it is configured to.

In addition, the vertical frame and the horizontal frame in the weld portion has a certain cross-section extends;

Brackets are mounted so that the vertical and horizontal transfers are inserted corresponding to the outer end surfaces of the vertical frame and the horizontal frame, and after the transfer to a predetermined position by the vertical and horizontal frame fixing handles respectively inserted into the two holes formed with the thread of the bracket. It is characterized in that it is configured to be fixed.

In addition, the welding torch is characterized in that the water is configured to circulate into the torch in a separate water tank.

As described above, the present invention can obtain a good welded part by adjusting a constant welding speed while welding the boom by an automated device, and the productivity is improved.

In addition, by arranging the number and position of the welding torch properly and to adjust the position there is an effect that can produce a variety of different types of boom.

In addition, there is an effect that a uniform weld can be obtained by appropriately cooling the torch whose temperature rises as the welding proceeds.

Accordingly, the configuration of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce.

1 is a perspective view according to an embodiment of the present invention, Figure 2 is a front view according to an embodiment of the present invention, is formed longer than the length of the boom (11) used in the crane and the upper surface both sides protruding rails (21) A die (2) having a longitudinal direction;

Protruding portion 31 corresponding to both sides of the protruding rail 21 of the die 2 and a plurality of rollers 32 rotating in close contact with the upper surface, the transfer bed (3) for positioning the boom assembly on the upper surface Wow;

A drive unit (4) for the transfer bed (3) to reciprocate along the rail (21);

At least one vertical frame 51 vertically connected and fixed to the die 2, a horizontal frame 52 mounted on the vertical frame 51 to be transported and fixed in a vertical direction, and the horizontal frame ( 52 is shown a crane boom automatic welding device composed of a welding portion (5) consisting of a welding torch 53 mounted to be transported and fixed in the horizontal direction.

In other words, if the end of the welding torch 53 is in close contact with the position that requires welding, the transfer bed 3 is transported at a constant speed and the welding operation is performed.

Since the boom must be transported in the correct position for this operation, in the present invention, the transporting boom 3 has a protruding boom working block 33 which floats apart from the upper surface of the bed, and the position of the boom. Reference block 34 to confirm that also presented an embodiment of protruding upward spaced at regular intervals.

According to the above embodiment, the position of the boom is accurately positioned and the work is performed.

In the case of the method as described above it is possible to form a high-quality welded portion in which a constant bead is formed by transferring the transfer bed 3 at a constant speed in the drive unit 4 is good workability is improved production speed.

Figure 3 is a plan view according to an embodiment of the present invention, Figure 4 is a main perspective view showing a drive unit according to an embodiment of the present invention, the drive unit 4 is a shaft from the bottom of the die 2 in the upper direction The pinion 42 is formed of the extended motor 41 and the pinion 42 mounted to the upper end of the motor 41, and the rack 35 formed in the longitudinal direction of the lower portion of the transfer bed 3 is provided with the pinion ( 42) is shown to be configured to work with.

This is because the weight of the boom is considerably heavy, and the rack and pinion is suggested as an example of using a rack and pinion for a smooth and constant movement while supporting it. You can easily create.

FIG. 5 is a perspective view of a main part of a welded part according to an exemplary embodiment, and FIG. 6 is a conceptual view illustrating a welded part of the present invention, wherein the vertical frame 51 and the horizontal frame 52 are fixed in the welded part 5. Has a cross section;

Brackets 54 are mounted to correspond to the outer end surfaces of the vertical frame 51 and the horizontal frame 52 so as to be inserted vertically and horizontally, and are respectively inserted into two holes in which the threads of the bracket 54 are formed. And it is shown to be configured to be fixed after the transfer to a certain position by the horizontal frame fixing handle (55, 56).

This configuration is to be able to freely adjust and fix the position of the welding torch 53, it is possible to manufacture a boom of various shapes and specifications.

In addition, by adjusting the number of the horizontal frame 52 mounted on the one vertical frame 51 is to be able to process four or more welds at the same time.

7 is a conceptual view illustrating a water circulation structure of the welding torch of the present invention, wherein the welding torch 53 is configured to circulate water into the torch in a separate water tank 57.

It is obvious that the welding method should have a method in which a welding rod, that is, a wire 58 is automatically supplied in order to be automated, and includes a gas tank 59 for injecting argon or carbon dioxide by injecting an inert gas. Welders are used.

At this time, as the welding operation is repeatedly performed, the temperature of the welding torch 53 inevitably rises, and the change of the temperature may result in the formation of the sensitive welding part uniformly.

Therefore, in the present invention to take advantage of the automation device to the water in the separate water tank 57 to circulate the inside of the welding torch 53 to cool the torch.

1 is a perspective view according to an embodiment of the present invention

2 is a front view according to an embodiment of the present invention;

3 is a plan view according to an embodiment of the present invention;

Figure 4 is a perspective view of the main portion showing a drive unit according to an embodiment of the present invention

Figure 5 is a perspective view of the main portion showing a welded portion according to an embodiment of the present invention

6 is a conceptual view showing a welded part of the present invention.

7 is a conceptual diagram showing the water circulation structure of the welding torch of the present invention.

Figure 8 is a side view showing the general form of a mobile crane

9 is an exploded perspective view showing the assembly shape of the boom;

<Explanation of symbols for main parts of the drawings>

1: crane

     11: boom 11h: horizontal plate

     11v: vertical 12: hook

2: die

     21: rail

3: Transfer Bed

     31: protrusion 32: roller

     33: boom working block 34: reference block

     35: lek

4: drive unit

     41: motor 42: pinion

5: welding part

     51: vertical frame 52: horizontal frame

     53: welding torch 54: bracket

     55: vertical frame fixing handle 56: horizontal frame fixing handle

     57: water tank 58: wire

     59: gas tank

Claims (5)

A die (2) formed longer than the length of the boom (11) used for the crane and having protruding rails (21) formed in the longitudinal direction on both sides of the upper surface; Protruding portion 31 corresponding to both sides of the protruding rail 21 of the die 2 and a plurality of rollers 32 rotating in close contact with the upper surface, the transfer bed (3) for positioning the boom assembly on the upper surface Wow; A drive unit (4) for the transfer bed (3) to reciprocate along the rail (21); At least one vertical frame 51 vertically connected and fixed to the die 2, a horizontal frame 52 mounted on the vertical frame 51 to be transported and fixed in a vertical direction, and the horizontal frame ( 52) the automatic boom welding device for crane, characterized in that consisting of a welding portion (5) consisting of a welding torch 53 is mounted to be transported and fixed in the horizontal direction. According to claim 1, wherein the transfer bed (3) is a protruding boom working block 33 which floats the spaced from the upper surface of the boom to the top, and the reference block 34 for identifying the position of the boom is also constant Automatic boom welding device for a crane, characterized in that protruding upward spaced apart. 2. The drive unit (4) according to claim 1, wherein the drive unit (4) is composed of a motor (41) extending in an upward direction from a lower portion of the die (2), and a pinion (42) mounted at an upper end of the motor (41). The boom automatic welding device for a crane, characterized in that the rack (35) formed in the longitudinal direction in the lower portion of the transfer bed (3) is configured to interlock with the pinion (42). According to claim 1, wherein in the welding section (5), the vertical frame (51) and the horizontal frame (52) extend with a certain cross section; Brackets 54 are mounted to correspond to the outer end surfaces of the vertical frame 51 and the horizontal frame 52 so as to be inserted vertically and horizontally, and are respectively inserted into two holes in which the threads of the bracket 54 are formed. And a horizontal frame fixing handle (55, 56) for boom automatic welding device for crane, characterized in that configured to be fixed after transport to a certain position. The welding device of claim 1, wherein the welding torch (53) is configured to circulate water from the separate water tank (57) to the inside of the torch.

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