Anchor mouth welding method

Abstract

According to the anchor mouth welding method, an anchor mouth and an anchor table bottom plate are reversely placed on a jig frame, conditions are created for welding operation of a common angle welding machine, anchor mouth welding seams can be welded to the inner ring and the outer ring of the anchor mouth through the angle welding machine, the welding efficiency of the anchor mouth and the anchor table bottom plate is improved, and the welding quality is also greatly improved. The labor cost is also obviously reduced, and the construction cost of an enterprise is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of shipbuilding, and in particular to an anchor lip welding method. Background Art

[0002] Anchors are equipment used when ships are moored. They rely on the gravity of anchors and anchor chains to be inserted into the seabed to achieve the purpose of fixing and stabilizing the ship in shallow waters and harbors. As a special hull structure, the quality of anchor base production directly affects the later test and delivery of the ship. However, the main bottleneck of welding operations is to ensure the quality of deep fusion welding between the anchor lip of the cast steel part on the anchor base and the anchor base bottom plate, while improving welding efficiency and shortening the overall production cycle of the anchor base.

[0003] At present, when manufacturing anchors, the anchor lip is first positioned horizontally, then the anchor base plate is hoisted, and then the internal and external welds between the anchor lip and the anchor base plate are filled by manual welding. Since the fillet weld between the anchor lip and the anchor base plate is usually welded by deep penetration welding, multiple layers and multiple passes are required to fill the weld completely. In the actual construction process, the welding operation time here accounts for half of the total anchor production time, which has become a key link restricting the improvement of anchor production efficiency. Summary of the invention

[0004] In view of this, the present invention provides an anchor lip welding method to solve the problems existing in the above-mentioned background technology.

[0005] An anchor lip welding method specifically comprises the following steps:

[0006] S1, manufacturing a tire frame, wherein a tire frame panel of the tire frame is a horizontal plane;

[0007] S2, taking the side of the anchor base plate away from the anchor lip as the base surface, place the anchor base plate in the center on the tire frame, and then place the anchor lip in the opposite position on the anchor base plate, and align the reference on the anchor base plate with the reference on the anchor lip;

[0008] S3, performing positioning welding on the anchor lip weld between the anchor base bottom plate and the anchor lip;

[0009] S4, fixing a plurality of fixing bars evenly distributed in the circumferential direction on the inner ring groove and the outer ring groove of the anchor lip, respectively, and forming a clamping groove for fixing the heating plate between the fixing bars and the inner ring slope surface and the outer ring slope surface of the anchor lip;

[0010] S5, placing the heating plates in the clamping grooves between the inner circle slope surface and the outer circle slope surface of the fixing bar and the anchor lip respectively, heating the anchor lip weld to a set temperature by the heating plates and then starting the welding operation;

[0011] S6, placing a fillet welder on the inner and outer rings of the anchor lip respectively, and making the welding guide wheel of the fillet welder located on the inner ring close to the inner wall of the anchor lip, and the welding guide wheel of the fillet welder located on the outer ring close to the outer wall of the anchor lip, and then adjusting the welding gun heads of the two fillet welders so that the two welding gun heads are respectively aligned with the inner and outer welding grooves;

[0012] Start two fillet welders at the same time, so that the two fillet welders perform synchronous welding along the inner circle contour and the outer circle contour of the anchor lip respectively;

[0013] S7, after welding is completed, the anchor lip weld is inspected and repaired for welding defects;

[0014] S8, after the welding quality of the anchor lip weld meets the requirements, turn the whole formed by the anchor base bottom plate and the anchor lip over to a normal state and enter the next process.

[0015] Preferably, the tire frame includes a tire frame top plate and multiple bottom supports fixed at the bottom of the tire frame top plate. The size of the tire frame top plate is larger than that of the anchor base bottom plate. The multiple bottom supports are evenly distributed in the circumferential direction, and the upper end of each bottom support is inclined toward the direction close to the center of the tire frame top plate.

[0016] Preferably, the tire frame top plate is a circular flat plate and its radius is greater than the radius of the anchor platform bottom plate, and the angle between two adjacent bottom supports at the bottom of the tire frame top plate is 60°.

[0017] Preferably, the anchor platform bottom plate and the anchor lip are both provided with an upper mouth reference and a bow reference.

[0018] Preferably, in step S5, the anchor lip weld is heated to not less than 120° C. by a heating plate before starting the welding operation.

[0019] Preferably, in step S7, the welding defects of the anchor lip weld are detected by magnetic particle inspection, and after the welding defects are found, the repair loop is immediately performed.

[0020] Preferably, the fixing strip is fixed at a position 20 mm to 30 mm away from the upper surface of the anchor base bottom plate.

[0021] Preferably, the fixing strip is fixed at an angle, the fixing strip fixed on the inner groove of the anchor lip is inclined toward the center of the anchor lip, and the fixing strip fixed on the outer groove of the anchor lip is inclined away from the center of the anchor lip.

[0022] The beneficial effects of the present invention are:

[0023] The present invention places the anchor lip and the anchor base plate in an inverted state on the tire frame, creating conditions for the welding operation of a common fillet welding machine. The fillet welding machine can be used to weld the anchor lip welds on the inner and outer circles of the anchor lip respectively, which not only improves the welding efficiency of the anchor lip and the anchor base plate, but also greatly improves the welding quality, significantly reduces labor costs, and reduces the construction cost of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the anchor platform being placed on the tire frame in an inverted state.

[0026] Figure 2 It is a front view of the anchor platform placed in an inverted position on the tire frame.

[0027] Figure 3 It is a schematic diagram of welding the anchor lip weld using a fillet welding machine.

[0028] The meanings of the numbers in the figure are:

[0029] 1 is a tire frame, 11 is a tire frame top plate, and 12 is a bottom support.

[0030] 2 is the anchor base plate,

[0031] 3 is the anchor lip,

[0032] 4 is a fixing bar,

[0033] 5 is a fillet welding machine. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0035] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0036] In order to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0037] The present invention provides an anchor lip welding method, which specifically comprises the following steps:

[0038] S1, manufacturing a tire frame 1, wherein the tire frame panel of the tire frame is a horizontal plane.

[0039] The tire frame 1 includes a tire frame top plate 11 and multiple bottom supports 12 fixed at the bottom of the tire frame top plate 11. The size of the tire frame top plate 11 is larger than that of the anchor base bottom plate. The multiple bottom supports 12 are evenly distributed in the circumferential direction, and the upper end of each bottom support is inclined toward the direction close to the center of the tire frame top plate.

[0040] In this embodiment, the tire frame top plate 11 is a circular flat plate and its radius is greater than the radius of the anchor base bottom plate. Preferably, the radius of the tire frame top plate 11 is 500 mm larger than the radius of the anchor base bottom plate; the angle between two adjacent bottom supports 12 at the bottom of the tire frame top plate 11 is 60°.

[0041] The bottom support 12 of the tire frame is welded and fixed on the workshop floor. Of course, it can also be fixed in other ways, such as by bolts or screws.

[0042] After the tire frame 1 is manufactured, the levelness of the tire frame top plate 11 is measured by a measuring instrument (such as a level meter, a level ruler, etc.). Construction can be started after the levelness of the tire frame top plate 11 meets the requirements.

[0043] S2, taking the side of the anchor base plate 2 facing away from the anchor lip as the base surface, place the anchor base plate 2 centrally on the tire frame top plate 11 of the tire frame 1, and then place the anchor lip 3 in reverse on the anchor base plate 2, and align the reference on the anchor base plate 2 with the reference on the anchor lip 3.

[0044] The upper mouth datum and the bow datum are pre-marked on the anchor base bottom plate 2, and the upper mouth datum and the bow datum are also pre-marked on the anchor lip 3. After the upper mouth datum of the anchor base bottom plate 2 is aligned with the upper mouth datum of the anchor lip 3, and the bow datum of the anchor base bottom plate 2 is aligned with the bow datum of the anchor lip 3, it can be ensured that the linear shapes of the anchor base bottom plate 2 and the anchor lip 3 correspond to each other, so as to ensure the subsequent welding accuracy and welding quality.

[0045] S3, positioning welding is performed on the anchor lip weld between the anchor base bottom plate 2 and the anchor lip 3 (anchor lip 3).

[0046] S4, a plurality of fixing bars 4 evenly distributed in the circumferential direction are fixed to the inner ring groove and the outer ring groove of the anchor lip 3 respectively, and a clamping groove for fixing the heating plate is formed between the fixing bars 4 and the inner ring slope surface and the outer ring slope surface of the anchor lip 3.

[0047] The fixing strip 4 is fixed at an angle. The fixing strip 4 fixed at the inner groove of the anchor lip 3 is inclined toward the center of the anchor lip 3 , and the fixing strip 4 fixed at the outer groove of the anchor lip 3 is inclined away from the center of the anchor lip 3 .

[0048] In order to ensure that the heat of the heating plate is effectively conducted downward to ensure the welding quality, the fixing strip 4 can be fixed at a position 20mm-30mm away from the upper surface of the anchor base bottom plate 2. In this embodiment, the fixing strip 4 is fixed at a position 30mm away from the upper surface of the anchor base bottom plate 2, the fixing strip 4 fixed at the inner groove of the anchor lip 3 is inclined toward the center of the anchor lip 3, and the fixing strip 4 fixed at the outer groove of the anchor lip 3 is inclined in the direction away from the center of the anchor lip 3, and the angle between two adjacent fixing strips 4 is 30°.

[0049] S5, placing the heating plates in the grooves between the inner and outer slopes of the fixing strip 4 and the anchor lip 3, respectively, and placing the heating plates along the slope of the anchor lip. Then, the heating plates are used to heat the anchor lip weld to a set temperature and then the welding operation is started.

[0050] In this embodiment, the welding operation is started after the anchor lip weld is heated to not less than 120° C. by using a heating plate.

[0051] S6, placing a fillet welder 5 on the inner and outer rings of the anchor lip 3 respectively, and making the welding guide wheel of the fillet welder located on the inner ring close to the inner wall of the anchor lip, and the welding guide wheel of the fillet welder located on the outer ring close to the outer wall of the anchor lip, and then adjusting the welding gun heads of the two fillet welders so that the two welding gun heads are respectively aligned with the inner and outer welding grooves;

[0052] Then, two fillet welders are started simultaneously to synchronously complete multi-layer and multi-pass welding along the inner circle contour and the outer circle contour of the anchor lip.

[0053] S7, after welding is completed, the anchor lip weld is inspected and repaired for welding defects.

[0054] In this embodiment, the welding defects of the anchor lip weld are detected by magnetic particle inspection, and after the welding defects are found, the repair loop is immediately performed.

[0055] S8, after the welding quality of the anchor lip weld meets the requirements, the whole formed by the anchor base plate 2 and the anchor lip 3 is turned over to a normal state and enters the next process.

[0056] It should be clear that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. An anchor lip welding method, characterized in that: The specific steps include: S1, manufacturing a tire frame (1), wherein a tire frame panel of the tire frame is a horizontal plane; S2, taking the side of the anchor base plate (2) away from the anchor lip as the base surface, the anchor base plate is centrally placed on the tire frame (1), and then the anchor lip (3) is placed in the reverse position on the anchor base plate (2), and the reference on the anchor base plate (2) is aligned with the reference on the anchor lip (3); S3, performing positioning welding on the anchor lip weld between the anchor base plate (2) and the anchor lip (3); S4, a plurality of fixing strips (4) evenly distributed in the circumferential direction are respectively fixed to the inner ring groove and the outer ring groove of the anchor lip (3), and a clamping groove for fixing the heating plate is formed between the fixing strips (4) and the inner ring slope surface and the outer ring slope surface of the anchor lip (3); S5, placing the heating plates in the grooves between the inner and outer slopes of the fixing strip (4) and the anchor lip (3), respectively, heating the anchor lip weld to a set temperature using the heating plates and then starting the welding operation; S6, placing a fillet welder (5) on the inner ring and the outer ring of the anchor lip (3), respectively, and making the welding guide wheel of the fillet welder located on the inner ring close to the inner wall of the anchor lip, and the welding guide wheel of the fillet welder located on the outer ring close to the outer wall of the anchor lip, and then adjusting the welding gun heads of the two fillet welders so that the two welding gun heads are respectively aligned with the inner and outer welding grooves; Start two fillet welders at the same time, so that the two fillet welders perform synchronous welding along the inner circle contour and the outer circle contour of the anchor lip respectively; S7, after welding is completed, the anchor lip weld is inspected and repaired for welding defects; S8, after the welding quality of the anchor lip weld meets the requirements, the whole formed by the anchor base plate (2) and the anchor lip (3) is turned over to a normal state and enters the next process.

2. The anchor lip welding method according to claim 1, characterized in that: The tire frame (1) comprises a tire frame top plate (11) and a plurality of bottom supports (12) fixed to the bottom of the tire frame top plate (11); the size of the tire frame top plate (11) is larger than the size of the anchor base bottom plate; the plurality of bottom supports (12) are evenly distributed in a circumferential direction, and the upper end of each bottom support is inclined toward a direction close to the center of the tire frame top plate.

3. The anchor lip welding method according to claim 2, characterized in that: The tire frame top plate (11) is a circular flat plate and its radius is greater than the radius of the anchor platform bottom plate. The angle between two adjacent bottom supports (12) at the bottom of the tire frame top plate (11) is 60°.

4. The anchor lip welding method according to claim 1, characterized in that: The anchor platform bottom plate (2) and the anchor lip (3) are both provided with an upper mouth reference and a bow reference.

5. The anchor lip welding method according to claim 1, characterized in that: In step S5, the anchor lip weld is heated to not less than 120° C. by using a heating plate before the welding operation is started.

6. The anchor lip welding method according to claim 1, characterized in that: In step S7, the welding defects of the anchor lip weld are detected by magnetic particle inspection. When the welding defects are found, the repair loop is immediately performed.

7. The anchor lip welding method according to claim 1, characterized in that: The fixing strip (4) is fixed at a position 20 mm to 30 mm away from the upper surface of the anchor base plate (2).

8. The anchor lip welding method according to claim 1 or 7, characterized in that: The fixing strip (4) is fixed at an angle, the fixing strip (4) fixed on the inner groove of the anchor lip (3) is inclined toward the center of the anchor lip (3), and the fixing strip (4) fixed on the outer groove of the anchor lip (3) is inclined in a direction away from the center of the anchor lip (3).

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