A mobile degaussing device and method for large steel plate processing

Abstract

The application discloses a mobile demagnetization device and method for large steel plate processing, and belongs to the technical field of demagnetization. The mobile demagnetization device comprises a mobile trolley, an in-out mechanism, an up-down mechanism and a demagnetization generator. A vertical rod is fixed on the mobile trolley, and the vertical rod is connected with the in-out mechanism through a first connecting piece. One end of the in-out mechanism is connected with one end of the up-down mechanism through a second connecting piece, and the other end of the up-down mechanism is provided with the demagnetization generator. The demagnetization generator is adjusted in horizontal and vertical directions through the in-out mechanism and the up-down mechanism. The mobile demagnetization device can move on the steel plate and is suitable for demagnetization of large steel plates. The position of the demagnetization generator can be adjusted, and the demagnetization generator is suitable for demagnetization of steel plates with different thicknesses and different widths. In addition, the alternating magnetic field strength and direction can be adjusted according to the size of the steel plate to be demagnetized and the size of the residual magnetic field.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of degaussing, and particularly relates to a mobile degaussing device and method for large steel plate processing. BACKGROUND

[0002] In the processing of cutting, beveling or welding rework, the steel plate will contact a large current and a magnetic field, resulting in a certain residual magnetic field on the surface of the steel plate. When welding a large steel plate, if the steel plate has a large residual magnetic field, the welding arc magnetic field will be superimposed on the residual magnetic field, thereby changing the uniformity of the magnetic field around the welding arc, causing the welding arc to deviate to the side where the magnetic field is weaker, forming a magnetic blowout phenomenon, and thus adversely affecting the welding quality. Therefore, the residual magnetic field of the steel plate will affect the welding of the large steel plate.

[0003] The existing degaussing methods can be divided into alternating current degaussing method and direct current degaussing method, and the principles of the two methods are different. In the direct current degaussing method, a direct current is provided by a power supply, and the current is conducted to the steel or magnetic object to be degaussed through a coil or an electrode. As the current passes through the object, a magnetic field generated by a winding is formed, which interacts with the residual magnetic field inside the object. According to the principle of magnetic field interaction, when the current passes through the object, the residual magnetic field inside the object can be reduced or offset by the reverse magnetic field. The alternating current degaussing method uses the change of the direction and size of the current to generate a decaying alternating current magnetic field, which changes the magnetic domain structure in the steel plate to achieve degaussing. The alternating current degaussing method is mainly suitable for degaussing the surface of a workpiece.

[0004] Large steel plates are mainly degaussed by using a flat plate type degaussing machine or a frame type coil degaussing machine based on the principle of alternating current degaussing. The frame type coil degaussing machine uses a steel plate to pass through a coil for degaussing, and has a large outer shape and is not suitable for moving. At the same time, the frame type coil degaussing machine is limited by the requirement of the size of the coil on the size of the steel plate. The flat plate type degaussing machine degausses through a flat surface, and the operation is relatively simple. However, the flat plate type degaussing machine is usually only suitable for steel plates with a thickness of less than 20-30 mm, and manual operation is required for degaussing. Therefore, it is urgent to develop a mobile degaussing device for large steel plate processing. SUMMARY

[0005] The application aims to solve the problem that the existing degaussing device is limited by the size and thickness of the steel plate, and provides a mobile degaussing device which is more automated, convenient to operate, and has an adjustable degaussing alternating current magnetic field. Specifically, the application provides a mobile degaussing device and method for large steel plate processing.

[0006] The specific technical solutions adopted by the application are as follows:

[0007] In a first aspect, the application provides a mobile degaussing device for large steel plate processing, which comprises a mobile trolley, an in-out mechanism, an up-down mechanism and a degaussing generator.

[0008] The mobile trolley comprises a walking mechanism, an operation panel and a power interface. The walking mechanism is arranged at the bottom of the mobile trolley and is used for moving on the steel plate to be degaussed. The mobile trolley is internally provided with a driving mechanism for controlling the driving of the mobile trolley and a main control circuit. The main control circuit is also used for adjusting the current size of the degaussing generator and the size and direction of the alternating magnetic field.

[0009] The mobile trolley is fixed with a vertical rod. The vertical rod is fixed with a first connecting piece, and the vertical rod is connected with the in-out mechanism through the first connecting piece. One end of the in-out mechanism is fixed with a second connecting piece. The in-out mechanism is connected with one end of the up-down mechanism through the second connecting piece. The other end of the up-down mechanism is provided with the degaussing generator.

[0010] The in-out mechanism comprises a transverse circular tube arranged transversely, and a transverse ratchet arranged axially on the transverse circular tube. The first connecting piece is internally provided with a first ratchet wheel matched with the transverse ratchet, and the first connecting piece is externally fixed with an in-out motor. The in-out motor controls the rotation of the first ratchet wheel, and the horizontal position of the degaussing generator is adjusted by adjusting the position of the first ratchet wheel buckled with the transverse ratchet. The up-down mechanism comprises a longitudinal circular tube arranged longitudinally, and a longitudinal ratchet arranged axially on the longitudinal circular tube. The second connecting piece is internally provided with a second ratchet wheel matched with the longitudinal ratchet, and the second connecting piece is externally fixed with an up-down motor. The up-down motor controls the rotation of the second ratchet wheel, and the vertical position of the degaussing generator is adjusted by adjusting the position of the second ratchet wheel buckled with the longitudinal ratchet.

[0011] As a preferred, the operation panel is arranged at the top of the mobile trolley. The operation panel is provided with buttons for adjusting the horizontal position and the vertical position of the degaussing generator. The operation panel is provided with buttons for controlling the forward and backward movement of the mobile trolley, and buttons for controlling the stop of the movement of the mobile trolley.

[0012] Further, the operation panel is provided with a switch for controlling the power-on of the mobile degaussing device. The operation panel is provided with a knob for adjusting the strength and direction of the alternating magnetic field of the degaussing generator.

[0013] As a preferred, the bottom of the vertical rod is fixed on the mobile trolley by welding or bolt connection.

[0014] As a preferred, the first connecting piece is connected with the vertical rod by a hoop.

[0015] As a preferred, the second connecting rod is connected with one end of the in-out mechanism by a hoop.

[0016] As a preferred, the power interface is arranged on the side of the mobile trolley and is connected with a 220V power socket through a power line.

[0017] As a preferred, the driving mechanism in the mobile trolley adopts stepless speed regulation.

[0018] As preferred, the above demagnetization generator is provided with a demagnetization coil and a core, and forms a magnetic field after being energized, serving as an alternating magnetic field generating device.

[0019] In a second aspect, the application provides a demagnetization method using the mobile demagnetization device for large steel plate processing in the first aspect, characterized in that the specific steps are as follows:

[0020] S1: The residual magnetic field of the welding position of the steel plate to be demagnetized is detected by using an electromagnetic field tester, and the magnetic field size and direction are recorded.

[0021] S2: The mobile demagnetization device is placed on the steel plate to be demagnetized, and the power supply is turned on. The position of the demagnetization generator in the horizontal direction and the vertical direction is adjusted by operating the buttons on the operation panel, so that the demagnetization generator is close to the welding position of the steel plate to be demagnetized.

[0022] S3: According to the magnetic field size and direction detected in step S1, the required demagnetization alternating magnetic field is generated by the demagnetization generator through the knob on the operation panel.

[0023] S4: The forward and backward movement of the mobile trolley is controlled by the buttons on the operation panel, so that the demagnetization generator moves forward and backward along the welding position of the steel plate to be demagnetized, and the demagnetization treatment is carried out, so as to ensure that the residual magnetic field of the welding position meets the welding requirements.

[0024] Compared with the prior art, the application has the following beneficial effects:

[0025] (1) The mobile demagnetization device provided by the application is provided with electrically adjustable in-out mechanism and up-down mechanism, so as to adjust the position of the demagnetization generator, which can be applied to the middle and edge demagnetization of steel plates with different thicknesses and widths, and can also be applied to the demagnetization of steel plates after various groove and carbon planing processes.

[0026] (2) The mobile demagnetization device provided by the application can adjust the applicable alternating magnetic field strength and alternating magnetic field direction according to the size of the steel plate to be demagnetized and the size of the residual magnetic field, which can prolong the service life of the demagnetization generator and reduce the energy consumption cost of enterprises.

[0027] (3) The mobile demagnetization device provided by the application can be placed on the steel plate to be demagnetized, and can be moved by the mobile trolley, which is suitable for large steel plate demagnetization and is convenient and easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 The mobile demagnetization device provided for the embodiment is shown in the schematic view;

[0029] Figure 2 The front view of the mobile demagnetization device provided for the embodiment is shown in the front view;

[0030] Figure 3 The mobile demagnetization device provided in the embodiment is shown in a top view;

[0031] Figure 4 The first connecting piece provided in the embodiment is shown in a schematic view;

[0032] Figure 5 The second connecting piece provided in the embodiment is shown in a schematic view;

[0033] Figure 6 The partial enlarged view of the in-out mechanism provided in the embodiment is shown;

[0034] Figure 7 The partial enlarged view of the up-down mechanism provided in the embodiment is shown;

[0035] Figure 8 The working schematic view of the mobile demagnetization device provided in the embodiment is shown;

[0036] In the figure: the steel plate to be demagnetized 1, the mobile trolley 2, the walking mechanism 201, the operation panel 202, the power interface 203, the vertical rod 3, the first connecting piece 4, the in-out motor 401, the first ratchet wheel 402, the in-out mechanism 5, the horizontal circular tube 501, the horizontal ratchet 502, the second connecting piece 6, the up-down motor 601, the second ratchet wheel 602, the up-down mechanism 7, the longitudinal circular tube 701, the longitudinal ratchet 702, the demagnetization generator 8. DETAILED DESCRIPTION

[0037] The present application will be further described and illustrated in the following with reference to the accompanying drawings and specific embodiments. The technical features of each embodiment in the present application can be combined accordingly without conflict.

[0038] In the description of the present application, it should be understood that the terms "first", "second" are only used for distinguishing description purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features.

[0039] In the description of the present application, it should be understood that when an element is considered to be "connected" to another element, it can be directly connected to the other element or indirectly connected with the presence of an intermediate element. In contrast, when an element is considered to be "directly" connected to another element, there is no intermediate element.

[0040] As a preferred embodiment of the specific implementation, the present application provides a mobile demagnetization device for large steel plate processing, and the specific structure is shown in Figure 1 and Figure 2 The mobile demagnetization device includes a mobile trolley 2, an in-out mechanism 5, an up-down mechanism 7 and a demagnetization generator 8.

[0041] The mobile trolley 2 comprises a walking mechanism 201, an operation panel 202 and a power interface 203. The walking mechanism 201 is four wheels arranged at the bottom of the mobile trolley 2, used for moving on the steel plate 1 to be degaussed. The power interface 203 is arranged on the side of the mobile trolley 2, connected to a 220V power socket through a power line. The top of the mobile trolley 2 is provided with the operation panel 202.

[0042] The mobile trolley 2 is also provided with a driving mechanism and a main control circuit inside. The driving mechanism is realized by circuit technology, which is the driving device of the mobile trolley 2, can realize stepless uniform speed regulation, so that the mobile trolley 2 moves forward and backward. The main control circuit is realized by circuit technology, which can control the operation of the mobile trolley 2, and detect and adjust the current size, the alternating magnetic field size and direction of the degaussing generator 8.

[0043] The mobile trolley 2 is fixed with a vertical rod 3, which can be fixed with the mobile trolley 2 by welding or bolt connection. As shown in Figure 6 The vertical rod 3 is connected with the first connecting piece 4 by the way of hoop connection, so that the mobile trolley 2 is connected with the in-out mechanism 5 through the vertical rod 3 and the first connecting piece 4. The in-out mechanism 5 comprises a horizontal circular pipe 501 arranged horizontally, and a single row of horizontal ratchet teeth 502 arranged axially on the horizontal circular pipe 501. As shown in Figure 4 The first connecting piece 4 is provided with a first ratchet wheel 402 matched with the horizontal ratchet teeth 502. The first connecting piece 4 is fixed with an in-out motor 401 outside, and the in-out motor 401 can control the rotation of the first ratchet wheel 402, so as to adjust the position of the degaussing generator 8 in horizontal direction by adjusting the position of the first ratchet wheel 402 engaged with the horizontal ratchet teeth 502.

[0044] One end of the in-out mechanism 5 is fixed with the second connecting piece 6 by the way of hoop connection, and the other end of the up-down mechanism 7 is provided with the degaussing generator 8. The up-down mechanism 7 comprises a longitudinal circular pipe 701 arranged longitudinally, and a single row of longitudinal ratchet teeth 702 arranged axially on the longitudinal circular pipe 701. As shown in Figure 5 The second connecting piece 6 is provided with a second ratchet wheel 602 matched with the longitudinal ratchet teeth 702. The second connecting piece 6 is fixed with an up-down motor 601 outside, and the up-down motor 601 can control the rotation of the second ratchet wheel 602, so as to adjust the position of the degaussing generator 8 in vertical direction by adjusting the position of the second ratchet wheel 602 engaged with the longitudinal ratchet teeth 702.

[0045] As shown in Figure 7 The degaussing generator 8 is arranged at the bottom of the longitudinal circular pipe 701 in the up-down mechanism 7. The degaussing generator 8 is provided with a degaussing coil and an iron core, the degaussing coil is wound on the iron core, and forms a magnetic field after being electrified, which is an alternating magnetic field generating device, and the current is controlled by the main control circuit to adjust the strength and direction of the alternating magnetic field.

[0046] As shown in Figure 3 The operation panel 202 is provided with "probe in", "probe out", "probe up", "probe down", "forward", "backward" and "emergency stop" buttons, and "electromagnetic direction" and "electromagnetic strength" knobs.

[0047] The "probe in" and "probe out" buttons on the operation panel 202 can control the in-out motor 401 to rotate the first ratchet wheel 402, and adjust the position of the first ratchet wheel 402 buckled with the horizontal ratchet teeth 502, so as to adjust the horizontal position of the degaussing generator 8. The "probe up" and "probe down" buttons can control the up-down motor 601 to rotate the second ratchet wheel 602, and adjust the position of the second ratchet wheel 602 buckled with the vertical ratchet teeth 702, so as to adjust the vertical position of the degaussing generator 8. The "forward" and "backward" buttons on the operation panel 202 can control the driving mechanism to move the mobile trolley 2 forward or backward. The "electromagnetic direction" and "electromagnetic strength" knobs can adjust the strength and direction of the alternating magnetic field of the degaussing generator 8. The operation panel 202 is also provided with a switch for controlling the power-on of the mobile degaussing device.

[0048] The embodiment also provides a degaussing method using the above mobile degaussing device. The steel plate 1 to be degaussed is a steel plate with residual magnetic field in the process of cutting, beveling or welding rework. The working schematic diagram is shown in Figure 8 The specific steps are as follows:

[0049] S1: A residual magnetic field detector is used to detect the residual magnetic field of the to-be-welded part of the steel plate 1 to be degaussed, and the magnetic field size and direction are recorded. The residual magnetic field detector used here can be a gauss meter, which can detect the residual magnetic field of the to-be-welded part of the processed steel plate, or the residual magnetic field of the to-be-reworked welding part of the steel plate after welding.

[0050] S2: The mobile degaussing device is placed on the steel plate 1 to be degaussed, and the switch in the operation panel 202 is turned on to connect the power supply. The horizontal direction of the degaussing generator 8 is adjusted by the "probe in" and "probe out" buttons on the operation panel 202, and the vertical direction is adjusted by the "probe up" and "probe down" buttons, so that the degaussing generator 8 is close to the to-be-welded part of the steel plate 1 to be degaussed.

[0051] S3: According to the magnetic field size and direction detected in step S1, the "electromagnetic size" and "electromagnetic direction" knobs on the operation panel 202 are adjusted to make the degaussing generator 8 generate the required degaussing alternating magnetic field.

[0052] S4: by adjusting the "forward", "backward" button on the operation panel 202, control the mobile trolley 2 on the steel plate 1 to move forward and backward, so that the degaussing generator 8 along the steel plate 1 to be welded to move forward and backward, degaussing process. According to the remaining magnetic field of the welding position detected in step S1, if the remaining magnetic field changes, the device can be stopped by the "emergency stop" button on the operation panel 202, then adjust the "electromagnetic size", "electromagnetic direction" knob, so that the degaussing generator 8 produces the required degaussing alternating magnetic field, degaussing the steel plate to be welded, so as to ensure that the remaining magnetic field of the welding position meets the welding requirements.

[0053] The mobile degaussing device provided by the application can automatically scan and degauss steel plates of different thicknesses and widths, can adjust the applicable alternating magnetic field intensity according to the size and the remaining magnetic field of the steel plate to be degaussed, prolong the service life of the degaussing machine, reduce the energy consumption cost of enterprises, can also adjust the direction of the alternating magnetic field, and is convenient for degaussing steel plates of different processing types and different positions; the degaussing generator is mobile, and is suitable for degaussing steel plates of various groove and carbon planing surface processing processes.

[0054] The above-described embodiments are only a preferred scheme of the application, and are not intended to limit the application. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the application. Therefore, any technical scheme obtained by equivalent replacement or equivalent transformation falls within the protection scope of the application.

Claims

1. A mobile demagnetization device for large steel plate processing, characterized by, It comprises a mobile trolley (2), an in-out mechanism (5), an up-down mechanism (7) and a demagnetization generator (8); The mobile trolley (2) comprises a walking mechanism (201), an operation panel (202) and a power interface (203); the walking mechanism (201) is arranged at the bottom of the mobile trolley (2) and is used for moving on the steel plate (1) to be demagnetized; the mobile trolley (2) is internally provided with a driving mechanism and a main control circuit for controlling the driving of the mobile trolley (2); the main control circuit is also used for adjusting the current size, the alternating magnetic field size and the direction of the demagnetization generator (8); The mobile trolley (2) is fixed with a vertical rod (3); the vertical rod (3) is fixed with a first connecting piece (4), and the vertical rod (3) is connected with the in-out mechanism (5) through the first connecting piece (4); one end of the in-out mechanism (5) is fixed with a second connecting piece (6); the in-out mechanism (5) is connected with one end of the up-down mechanism (7) through the second connecting piece (6); the other end of the up-down mechanism (7) is provided with the demagnetization generator (8); The in-out mechanism (5) comprises a transverse circular tube (501) arranged transversely, and the transverse circular tube (501) is provided with transverse ratchets (502) along the axial direction; the first connecting piece (4) is internally provided with a first ratchet wheel (402) matched with the transverse ratchets (502), and the first connecting piece (4) is externally fixed with an in-out motor (401); the in-out motor (401) controls the rotation of the first ratchet wheel (402), and the horizontal position of the demagnetization generator (8) is adjusted by adjusting the position where the first ratchet wheel (402) is buckled with the transverse ratchets (502); the up-down mechanism (7) comprises a longitudinal circular tube (701) arranged longitudinally, and the longitudinal circular tube (701) is provided with longitudinal ratchets (702) along the axial direction; the second connecting piece (6) is internally provided with a second ratchet wheel (602) matched with the longitudinal ratchets (702), and the second connecting piece (6) is externally fixed with an up-down motor (601); the up-down motor (601) controls the rotation of the second ratchet wheel (602), and the vertical position of the demagnetization generator (8) is adjusted by adjusting the position where the second ratchet wheel (602) is buckled with the longitudinal ratchets (702); The operation panel (202) is arranged at the top of the mobile trolley (2); the operation panel (202) is provided with buttons for adjusting the horizontal position and the vertical position of the demagnetization generator (8); the operation panel (202) is provided with buttons for controlling the forward and backward movement of the mobile trolley (2) and buttons for controlling the stopping of the movement of the mobile trolley (2); the operation panel (202) is provided with a switch for controlling the power-on of the mobile demagnetization device; the operation panel (202) is provided with a knob for adjusting the alternating magnetic field intensity and direction of the demagnetization generator (8); The demagnetization generator (8) is internally provided with a demagnetization coil and an iron core, and forms a magnetic field after being powered on, serving as an alternating magnetic field generating device; the driving mechanism in the mobile trolley (2) adopts stepless speed regulation.

2. The mobile demagnetization device for large steel plates according to claim 1, wherein The vertical rod (3) is fixed on the mobile trolley (2) by welding or bolt connection.

3. The mobile demagnetization device for large steel plates according to claim 1, wherein The first connecting piece (4) is connected with the vertical rod (3) by a hoop.

4. The mobile demagnetization device for large steel plates according to claim 1, wherein The second connecting piece (6) is connected with one end of the access mechanism (5) by a hoop.

5. The mobile demagnetization device for large steel plates according to claim 1, wherein The power interface (203) is arranged on the side of the mobile trolley (2) and is connected with a 220V power socket through a power line.

6. A degaussing method using the mobile degaussing device for large steel plates according to any one of claims 1 to 5, characterized in that, The specific steps are as follows: S1: using an electromagnetic field tester to detect the residual magnetic field of the to-be-welded part of the to-be-demagnetized steel plate (1), and recording the magnetic field size and direction; S2: placing the mobile demagnetization device on the to-be-demagnetized steel plate (1) and connecting the power supply; adjusting the horizontal and vertical positions of the demagnetization generator (8) through the buttons on the operation panel (202) so that the demagnetization generator (8) is close to the to-be-welded part of the to-be-demagnetized steel plate (1); S3: according to the magnetic field size and direction detected in step S1, adjusting the demagnetization generator (8) to generate the required demagnetization alternating magnetic field through the knob on the operation panel (202); S4: controlling the forward and backward movement of the mobile trolley (2) through the buttons on the operation panel (202) so that the demagnetization generator (8) moves forward and backward along the to-be-welded part of the to-be-demagnetized steel plate (1) for demagnetization treatment, thereby ensuring that the residual magnetic field of the to-be-welded part meets the welding requirements.

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