Welding demagnetization equipment under high-intensity magnetic field

Abstract

The utility model discloses a degaussing device for welding under a strong magnetic field, the degaussing device comprises a horseshoe-shaped bend made of a steel plate and an insulated wire wound on the horseshoe-shaped bend, the horseshoe-shaped bend is of a U-shaped structure, and the horseshoe-shaped bend comprises an upper horseshoe part and a lower horseshoe part; the direct-current welding machine comprises two low-voltage output ports, and the insulated wire is connected to the two low-voltage output ports. A magnetic field is balanced through the degaussing device, the welding quality is effectively controlled, and the problem that equipment such as a desulfurizing tower cannot be welded in a high-intensity magnetic field is solved. In addition, the degaussing devices are installed on the movable tool, a plurality of degaussing devices can be placed, the welding operation efficiency is improved, the degaussing devices are moved to the positions needing to be welded through the movable tool during welding operation, the carrying time is saved, and the operation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding machine technical field, specifically, a strong magnetic field under welding degaussing equipment. BACKGROUND

[0002] In the production environment such as electrolytic aluminium factory, there is very strong magnetic field, which has great influence on welding quality, but because the production process is continuous, the maintenance and technical improvement during shutdown will cause great economic loss. Therefore, it is usually necessary to carry out welding work under the condition of not stopping production, which increases the difficulty of welding in the strong magnetic field environment. At the same time, similar desulfurization tower as important equipment in environmental protection technical improvement engineering, its size is huge, cannot be manufactured in non-magnetic field environment and transported to the scene, can only be made in strong magnetic field site, which further aggravates the complexity of welding.

[0003] In the prior art, welding in the strong magnetic field environment has always been a difficult problem, which often leads to the failure of welding, unstable welding quality and defects such as pores and slag inclusion. INVENTION CONTENTS

[0004] The utility model provides a strong magnetic field under welding degaussing equipment, solves the problem of unable to weld in the strong magnetic field environment, and effectively controls the welding quality.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] A strong magnetic field under welding degaussing equipment, characterized by comprising:

[0007] The degaussing device comprises a hoof-shaped bend made of a steel plate and an insulating wire wound on the hoof-shaped bend, and the hoof-shaped bend has a U-shaped structure and comprises an upper hoof part and a lower hoof part.

[0008] The direct current welding machine comprises two low-voltage output ports, and the insulating wire is connected to the two low-voltage output ports.

[0009] Further, the insulating wire is a copper core rubber insulating wire.

[0010] Further, the mobile tool comprises a base, a supporting device and an adjusting device; universal rollers are installed at the bottom of the base, and the direct current welding machine is placed on the base; the supporting device is arranged on the upper part of the base, and a lifting ring is arranged at the top end of the supporting device; the adjusting device comprises a ring chain hoist, the ring chain hoist is connected to the lifting ring at the upper part, and the degaussing device is arranged on the hook at the top of the supporting device and / or the lower part of the ring chain hoist.

[0011] Further, the supporting device comprises a vertical rod and a supporting rod, the vertical rod is fixedly connected to the base; the supporting rod is in the shape of L, is fixedly connected to the top of the vertical rod, and the lifting ring is arranged at the end of the supporting rod.

[0012] Further, the lower end of the support rod is provided with a connecting sleeve, a plurality of pin holes are formed on the connecting sleeve in the height direction, the top of the vertical rod is inserted into the connecting sleeve and selectively installed with a positioning pin in the pin hole.

[0013] Further, the base is provided with a counterweight.

[0014] Further, the distance between the upper hoof part and the lower hoof part of the hoof-shaped bend is controlled to be between 250mm and 400mm, the length of the hoof-shaped bend is 400mm, and the width is between 400mm and 500mm.

[0015] Further, the winding directions of the insulating wires on the upper hoof part and the lower hoof part are consistent.

[0016] The utility model discloses a demagnetizing device adopts the hoof-shaped bend structure, winds copper core wire and connects the direct current welding machine, and through the adjustment direct current welding machine current size, control the working strength of demagnetizing device, come to the magnetic field that changes constantly, guarantee welding normal progress.

[0017] The utility model discloses a demagnetizing device balances the magnetic field, effectively controls the welding quality, solves the problem that the equipment such as desulfurization tower can not be welded under the strong magnetic field. In addition, the demagnetizing device is installed on the mobile tool, can place multiple demagnetizing devices, improves the welding operation efficiency, and when welding, the demagnetizing device is moved to the welding position through the mobile tool, saves the carrying time, and improves the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of the welding demagnetization equipment under the strong magnetic field that the utility model provides.

[0019] In the drawing, 1 is hoof-shaped bend, 2 is insulating wire, 3 is direct current welding machine, 4 is low pressure output port, 5 is base, 6 is universal roller, 7 is lifting ring, 8 is manual hoist, 9 is chain, 10 is hook, 11 is vertical rod, 12 is support rod, 13 is connecting sleeve, 14 is counterweight, 15 is welding point A, 16 is welding point B. DETAILED DESCRIPTION

[0020] The utility model discloses a typical implementation mode provides the welding demagnetization equipment under the strong magnetic field, mainly by demagnetizing device and direct current welding machine.

[0021] The demagnetizing device includes a hoof-shaped bend 1 made of a steel plate and an insulating wire 2 wound on the hoof-shaped bend 1, and the hoof-shaped bend 1 has a U-shaped structure and includes an upper hoof part and a lower hoof part.

[0022] The direct current welding machine 3 includes two low pressure output ports 4, and the insulating wire 2 is connected to the two low pressure output ports 4.

[0023] According to the above embodiment, when the desulfurization tower and the like are welded under a strong magnetic field, the insulated conductor 2 is connected to two low-voltage output ports 4 of the direct current welding machine 3, and the working state of the degaussing device is controlled by switching the direct current welding machine. The degaussing device is attached to the weld, and the current of the direct current welding machine is adjusted to cope with the changing magnetic field, so that the welding process can be carried out normally.

[0024] In a preferred embodiment, a mobile tool is further included. The mobile tool includes a base 5, a supporting device, and an adjusting device; the base 5 is provided with universal wheels 6 at the bottom, and the direct current welding machine 3 is placed on the base 5; the supporting device is arranged on the upper part of the base 5, and the supporting device is provided with a lifting ring 7 at the top; the adjusting device includes a chain hoist, and the chain hoist is connected to the lifting ring 7 at the top; and the degaussing device is arranged on the top of the supporting device and / or a hook at the lower part of the chain hoist.

[0025] Since the degaussing device is heavy and is not easy to carry during operation, the present embodiment provides a mobile tool for installing and carrying the degaussing device. The base 5 is provided with universal wheels at the lower part, so that the degaussing device can be conveniently shifted.

[0026] The degaussing device can be directly placed on the top of the supporting device, or can be hung at the lower part of the chain hoist. Of course, multiple degaussing devices can be arranged at the same time, for example, the degaussing devices are arranged on the top of the supporting device and at the lower part of the chain hoist at the same time.

[0027] The degaussing device hung at the lower part of the chain hoist can adjust the height of the degaussing device through the chain hoist.

[0028] In the present embodiment, the chain hoist mainly includes a manual hoist 8, a chain 9, and a hook 10. The hook 10 at the upper end of the manual hoist 8 is connected to the lifting ring 7, and the hook 10 at the lower end of the manual hoist 8 is connected to the degaussing device through a sling.

[0029] In a relatively specific embodiment, the supporting device includes a vertical rod 11 and a supporting rod 12. The vertical rod 11 is fixedly connected to the base 5. The supporting rod 12 is in the shape of “L”, is fixedly connected to the top of the vertical rod 11, and is provided with the lifting ring 7 at the end.

[0030] In a preferred embodiment, the supporting rod 12 is provided with a connecting sleeve 13 at the lower end, a plurality of pin holes are formed in the connecting sleeve 13 in the height direction, the vertical rod 11 is inserted into the connecting sleeve 13 and selectively installed with a positioning pin in the pin hole, and the height of the supporting rod 12 is adjusted.

[0031] The base 5 is provided with a counterweight 14, which is used to prevent the equipment from falling over.

[0032] A relatively specific embodiment is provided below to further clearly and completely explain the technical solution claimed in the present utility model.

[0033] In this embodiment, a thicker steel plate is selected to weld the hoof-shaped bend 1, and the distance between the upper hoof and the lower hoof of the hoof-shaped bend 1 is controlled between 250mm-400mm, the length of the hoof-shaped bend 1 is 400mm, and the width of the steel plate for making the hoof-shaped bend 1 is 400mm-500mm.

[0034] The insulation conductor 2 is selected as a 35mm2 copper core rubber insulation conductor, and the insulation conductor 2 is wound on the upper hoof and the lower hoof of the hoof-shaped bend 1 respectively. When winding, it is necessary to ensure that the winding directions of the upper and lower hoofs are consistent to avoid the magnetic field generated by the conductor coil from canceling each other. The number of turns should not be less than 60, but should not be too much; too few turns will result in insufficient magnetic field, and too many turns will shorten the service life due to serious heating.

[0035] Before installation of the demagnetizing device, the magnetic field size at the welded weld is measured, and when connecting the DC welding machine 3, the insulation conductor 2 is connected to the two low-voltage output ports 4 of the DC welding machine 3. After the DC welding machine 3 is powered on, the demagnetizing device will be attracted to the surface of the welded equipment cylinder by magnetic force. When the magnetic field is adjusted to below 30GS by adjusting the current of the DC welding machine, the circumferential weld of the desulfurization tower can be welded as in the ordinary environment.

[0036] The mobile tool is welded using profiled steel material. Four universal rollers 6 are installed at the lower part of the base 5, the DC welding machine 3 is placed on the base 5, and the counterweight 14 is arranged on the base 5.

[0037] The support device is arranged on the upper part of the base 1, and the support device includes a vertical rod 11 and a support rod 12, and the bottom of the vertical rod 11 is welded with the base 5. The vertical rod 11, the support rod 12 and the base 5 form a rigid support frame to bear the weight of the demagnetizing device.

[0038] The support rod 12 is in the shape of “L”, and its lower end is fixedly connected to the top of the vertical rod 11 through a connecting sleeve 13. According to the height of the welding point A 15, a suitable pin hole is selected and a positioning pin is inserted into the pin hole.

[0039] A lifting ring 7 is arranged at the top front end of the support rod 12. The hook 10 at the upper part of the ring chain hoist is connected with the lifting ring 7, and the hook 10 at the lower part of the ring chain hoist is connected with the demagnetizing device. According to the height of the welding point B 16, the demagnetizing device is adjusted to the height position close to the welding point B 16 by using the ring chain hoist.

[0040] The working process of the welding demagnetizing device in the strong magnetic field is as follows:

[0041] S1: Connect the two insulation conductors 2 of the demagnetizing device to the two low-voltage output ports 4 of the DC welding machine 3 respectively, and control the working state of the demagnetizing device by turning on and off the DC welding machine 3.

[0042] S2: Place the demagnetizing device on the mobile tool, such asFigure 1 As shown, one degaussing device is fixed at the top of the support rod 12, and one degaussing device is hung under the chain hoist, and the two degaussing devices can be connected in sequence.

[0043] S3: Move the mobile tool and attach the degaussing device to the weld. Adjust the current on the DC welder 3 to cope with the changing magnetic field and ensure normal welding.

[0044] S4: After the welding of the position covered by the degaussing device is completed, turn off the power of the DC welder 3 and stop the degaussing device.

[0045] S5: Move the special tool and move the degaussing device to the next position of the workpiece to be welded. Turn on the power of the DC welder 3, adjust the current of the DC welder, adjust the working state of the degaussing device, and perform the welding operation.

[0046] S6: Repeat the above steps S3-S5 to complete the welding work of the workpiece to be welded.

Claims

1. A welding degaussing apparatus under a strong magnetic field, characterized by, The application relates to a demagnetization device and a direct current welding machine. The demagnetization device comprises a hoof-shaped bend made of a steel plate and an insulated wire wound on the hoof-shaped bend, the hoof-shaped bend is in a U-shaped structure and comprises an upper hoof part and a lower hoof part. The direct current welding machine comprises two low-voltage output ports, and the insulated wire is connected to the two low-voltage output ports.

2. The welding degaussing apparatus under strong magnetic field according to claim 1, characterized in that: The insulated wire is a copper core rubber insulated wire.

3. The welding degaussing apparatus under a strong magnetic field according to claim 1 or 2, characterized by: The application further relates to a mobile tool, which comprises a base, a supporting device and an adjusting device.

4. The welding degaussing apparatus under strong magnetic field according to claim 3, characterized in that: The base is provided with universal wheels at the bottom, and the direct current welding machine is arranged on the base.

5. The welding degaussing apparatus under strong magnetic field according to claim 4, characterized in that: The supporting device is arranged on the upper part of the base and is provided with a lifting ring at the top.

6. The welding degaussing apparatus under strong magnetic field according to claim 5, characterized in that: The adjusting device comprises a ring chain hoist, and the ring chain hoist is connected to the lifting ring.

7. The welding degaussing apparatus under a strong magnetic field according to claim 1 or 6, characterized by: The demagnetization device is arranged on the top of the supporting device and / or a hook arranged on the lower part of the ring chain hoist.

8. The welding degaussing apparatus under strong magnetic field according to claim 7, characterized in that: The supporting device comprises a vertical rod and a supporting rod. The supporting rod is in an L-shaped structure, is fixedly connected to the top of the vertical rod, and is provided with the lifting ring at the end. The lower end of the supporting rod is provided with a connecting sleeve, a plurality of pin holes are formed in the connecting sleeve in the height direction, the top of the vertical rod is inserted into the connecting sleeve and selectively arranged with a positioning pin in the pin hole. The base is provided with a counterweight. The distance between the upper hoof part and the lower hoof part of the hoof-shaped bend is controlled to be 250-400 mm, the length of the hoof-shaped bend is 400 mm, and the width is 400-500 mm. The winding directions of the insulated wire on the upper hoof part and the lower hoof part are consistent.

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