CN217452657U - Metal plate surface welding connecting key and surface welding structure - Google Patents

Abstract

The utility model relates to a face welded connection structure who uses in the structure discloses a metal face welded connection key and face welded structure thereof, including the metal connecting plate, the metal connecting plate includes connection panel, connects and sets up the welding bead of one or more bar that are used for filling welding material in the panel, and all welding beads form the full route of welding, will weld the full route and all weld the back through welder and form the welding seam orbit, and the welding seam orbit has an nodical rather than self at least. The utility model discloses be in the same place through the welding seam fixing that has the nodical behind the laminating of two metal face faces, consequently when this face structure piece receives multi-direction stress, at the welding seam of its unfavorable direction welding seam through another favorable direction of this nodical, its stress can partially offset, the utility model discloses bond linkage and face welding structure can form the natural ring who is preferred in favorable atress direction, and is better to external stress bearing capacity, and the stress defect point still less, and the performance is more stable, is difficult for receiving the damage.

Description

Metal plate surface welding connecting key and surface welding structure

Technical Field

The utility model relates to a face welded connection key and face welded structure who uses in the structure especially relates to the face welding between metal sheet and the metal sheet.

Background

The metal plates of the traditional structural part are mainly connected through bolts if the plates are surface-attached plates, and also partially connected through plug welding, groove welding, lap welding or laser welding, wherein the plug welding and the groove welding are mainly in a hole shape and a short strip shape, and the welded welding seam is in a point shape or a short strip shape, so that the external force bearing performance is poor, the metal plates are mostly used for non-structural parts, and the parts with lower mechanical property requirements are connected; the lap welding is frequently used for connecting common structural parts, but the bearing capacity is limited, and particularly, the structure is easy to damage when the lap welding is subjected to rotating or tensile and compressive stress vertical to the welding line of the lap welding; the laser welding mainly achieves the purpose of welding through a molten metal plate, selected parts are mainly in the field of thin plates such as automobile door plates and panels, and the welded parts cannot bear large external force and cannot be used as structural parts.

Disclosure of Invention

The utility model discloses to among the prior art as stopper weld between the metal sheet that the structure used, overlap joint weld rotation of perpendicular to its welding seam or draw, compressive stress the bearing capacity poor, damage easily, defects such as life weak point provide a welding orbit and self have an nodical at least, better to the external stress bearing capacity, stress defect point still less, and the performance is more stable, the difficult damaged face welded connection key and face welded structure.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the utility model provides a metal face welding connection key, includes the metal connecting plate, the metal connecting plate include connection panel, set up one or more strip-shaped welding bead that is used for filling welding material in the connection panel, all welding beads form the full route of welding, form the welding seam orbit after will welding full route through welder, the welding seam orbit has an nodical rather than oneself at least. In the traditional plug welding and groove welding, the welded seam and the welded seam have no intersection point, the welded seam is in a punctiform or independent strip distribution, and when the plug welding seam is subjected to external force, stress is concentrated at the welding point position with a small area, so that the welded part is easy to fall off; the groove welding is mostly linear, and when the groove welding is stressed perpendicular to the welding seam, the welding seam is easy to crack and fall off; and the utility model discloses in, because the welding seam orbit has an nodical rather than self at least, the welding seam orbit is the welding nodical with the nodical rather than self, can form the natural annular who is preferred in favourable atress direction, therefore the stress of all directions acts on the welding seam, and the homoenergetic can effectually be offset, and can transmit to the middle part board through the welding seam on, has avoided the direct or complete bearing stress of welding seam. Meanwhile, the welding intersection point is subjected to twice fusion welding, welding defects such as air holes and slag inclusion on the intersection point are subjected to twice overflow, and the mechanical property of the welded welding line is better.

Preferably, the welding seam track comprises a welding track starting point and a welding track end point, and the welding gun completes welding once through starting welding and collecting welding from the welding track starting point to the welding track end point. The technical personnel in the field can know that the weak point of the welding process is mainly the welding joint part during starting welding and receiving welding, so the welding joint part is often the welding weak point, the metal plate surface welding connecting key can complete the whole welding process only by starting welding and receiving welding once through reasonably setting the welding track, the increase of the welding joint is effectively avoided, the stability of the welding line is improved, and the welding quality is ensured.

Preferably, the welding seam track has only one intersection point with the welding seam track, and the welding seam track is two intersecting curve segments or straight segments. Firstly, more than 4 welding seams passing through the welding intersection point face to four directions respectively, when the welding part is subjected to external multi-directional stress, the stress in each direction is transmitted through the welding seams and collected at the welding intersection point, and partial stress is mutually counteracted, so that the defects caused by stress concentration are reduced, and the structural strength is higher; when the traditional groove welding seam is stressed in different directions, the final stress concentration points are mainly at two ends, so that the welding points at the two ends are easy to cause defects.

The welding seam track and the welding seam track have two or more than two intersection points, and the welding seam track is H-shaped. The H-shaped welding line can take both the upper and lower stresses into consideration.

Preferably, the welding seam track and the welding seam track have two intersection points, the welding seam track forms a closed-loop welding seam after welding, and the number of the middle plates in the middle of the closed-loop welding seam is two. The welding seam track and the welding seam track have only two intersection points, the welding seam track forms a closed-loop welding seam after welding, and the number of the middle plates in the middle of the closed-loop welding seam is two. The structure can be welded by one-time starting welding and ending welding, and the final welding stress weak point only has a welding end point during ending welding due to the fact that the welding point passes through the starting welding point in the welding process, so that stress defect points are reduced, and the structure is stable and has better strength.

Preferably, the weld bead is provided with a weld bead dam for blocking the weld bead, and the width of the weld bead dam is 0.2-3 times the thickness of the metal connecting plate. The welding bead dam is the ribbed rib, under the condition that the middle plate is formed, the middle plate and the connecting panel are connected together through the welding bead dam, transportation is convenient, when welding is conducted, the welding gun can weld the welding bead dam and a welding material together in a melting mode when passing through the welding bead dam, the welding bead dam is made of the same material as a metal connecting plate, and the welding bead dam and the metal connecting plate are better in connection performance after welding in the melting mode.

Preferably, the welding bead dam is connected with two sides of the connecting panel, and the welding bead dam and the connecting panel are made of an integrated material; or one side of the welding bead dam is connected with the connecting panel, the other side of the welding bead dam is connected with the middle plate, and the welding bead dam, the connecting panel and the middle plate are made of an integrated material. The gusset that the welding bead dam left when for the welding bead preparation, its purpose is exactly for connecting connection panel, middle part board for middle part board can not drop at the in-process of transportation, and the welding process in later stage need not to fix a position middle part board once more, improves welding efficiency.

Preferably, the middle part of the closed-loop welding seam is also provided with a secondary welding seam, and the welding track end point is positioned inside the closed-loop welding seam. The inner part of the closed-loop welding seam is a stress insensitive point, the welding track end point is used as a stress weak point, and the welding track end point is arranged in the closed-loop welding seam, so that when the whole welding structure is subjected to external force, the stress firstly acts on the peripheral closed-loop welding seam, and is less transmitted to the inner welding weak point, namely the welding track end point, and the stability of the welding structure is improved.

Preferably, the closed-loop welding seam is circular, oval or rectangular, and the middle plate is circular, oval or rectangular corresponding to the closed-loop welding seam.

Preferably, the intersection point of the welding seam track and the welding seam track is a welding intersection point, the number of the odd points of the welding intersection point is 0 or 2, and the number of the odd points is the number of lines led out from the intersection point and is an odd number. Therefore, the welding formation can be completed by only one welding starting and welding retracting during the welding of the welding seam track.

The utility model provides a face welded structure, includes foretell metal face welded connection key, still includes the bottom plate, and metal connecting plate and the laminating of bottom plate face are welded the full path of welding through welder and are all welded the welding seam orbit that forms after full with metal connecting plate and bottom plate fixed connection. The metal plate with the welding connection key is fixedly connected with the bottom plate through welding, the connection with the plate surface of the bottom plate is completed, compared with the traditional plug welding and groove welding, the radiation area of the connection key is larger, especially when the metal plate is used on a structural member, under the condition of welding seams with the same unit length, the tensile stress strength of the metal plate is more than 2 times that of the common plug welding and groove welding, especially when the metal plate bears the stress in multiple directions, the advantages and the performance are good, and the stability is high.

The utility model discloses a set up face welded connection key on the metal sheet, can be in the same place through welded fastening after laminating two metal face faces, and because the welding seam orbit has an nodical rather than self at least, consequently when this face structure piece receives multi-direction stress, can partially offset through this nodical stress, secondly, the utility model discloses connection key and face welded structure are better to the external stress bearing capacity, and the stress defect point still less, and the performance is more stable, is difficult for receiving the damage.

Drawings

Fig. 1 is a schematic view of the whole path of the welding formed by all the welding beads in embodiment 1 of the present invention.

Fig. 2 is a schematic view of a weld track in embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of a connection key in embodiment 2 of the present invention.

Fig. 4 is a schematic structural view of a weld track in embodiment 2 of the present invention.

Fig. 5 is a schematic structural view of a connection key according to embodiment 3 of the present invention.

Fig. 6 is a schematic diagram of a welding seam track structure completed by one welding in embodiment 3 of the present invention.

Fig. 7 is a schematic structural view of embodiment 4 of the present invention.

Fig. 8 is a schematic structural view of a welding end point located in a welding seam track in embodiment 4 of the present invention.

Fig. 9 shows a metal connecting plate with a bead dam according to embodiment 4 of the present invention.

The welding method comprises the following steps of 1-metal connecting plate, 2-welding full path, 3-middle plate, 4-welding seam track 11-connecting panel, 21-welding bead dam, 22-welding bead, 41-closed loop welding seam, 42-welding track starting point, 43-welding track ending point, 44-welding intersection point and 45-secondary welding seam.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings 1 to 9 and the following detailed description:

example 1

A metal plate surface welding connection key is shown in figures 1-2 and comprises a metal connection plate 1, wherein the metal connection plate 1 comprises a connection panel 11, one or more strip-shaped welding beads 22 for filling welding materials are arranged in the connection panel 11, all the welding beads 22 form a welding full path 2, a welding seam track 4 is formed after the welding full path 2 is completely welded by a welding gun, and the welding seam track 4 has at least one intersection point with the welding seam track.

The welding seam track 4 comprises a welding track starting point 42 and a welding track end point 43, and the welding gun completes welding once through starting welding and receiving welding from the welding track starting point 42 to the welding track end point 43, so that welding defect points are reduced.

The intersection of the weld track 4 and itself is the weld intersection 44, and the number of singularities of the weld intersection 44 is the number of lines drawn from the intersection that is an odd number. The thickness of the metal plate is 2 mm.

The welding seam track 4 only has one intersection point with the welding seam track 4, the welded welding seam track 4 forms a closed-loop welding seam 41, and the middle of the closed-loop welding seam 41 is provided with a whole middle plate 3. In the embodiment, the closed-loop welding seam 41 is arranged, the middle part of the closed-loop welding seam 41 is provided with the whole middle plate 3, after the surface welding connecting key is welded with the surfaces of other metal plates, external stress can be concentrated at the position of the closed-loop welding seam 31 in the middle part, if the middle part of the closed-loop welding seam 41 is not provided with the middle plate 3, when the structure is subjected to external multi-directional stress, the stress completely acts on the position of the closed-loop welding seam 41, and the defects that the closed-loop welding seam 41 cracks and falls off and the like are easily caused by long-time action; and the utility model discloses well closed loop welding seam 41's middle part is for filling solid middle part board 3, and when this structure received outside multi-direction stress, outside stress was concentrated through closed loop welding seam 41 and is transmitted to middle part board 3, and the internal stress of middle part board 3 partly forms mutually and offsets, and its tensile and the performance of shearing compare with traditional plug welding, groove welding and improve greatly, and the stability of whole structure is also more excellent.

The utility model provides a face welded structure, includes foretell metal face welded connection key, still includes the bottom plate, and metal connecting plate 1 and the laminating of bottom plate face are welded full path 2 through welder and are all welded the welding seam orbit 4 that forms after full with metal connecting plate 1 and bottom plate fixed connection. Have welded connection key metal sheet through welding and bottom plate fixed connection, accomplished the face-to-face connection of board, it compares with traditional plug welding, groove welding, and the connecting effect is good, stable in structure.

Example 2

As shown in fig. 3 to 4, the present embodiment is different from embodiment 1 in that: the welding bead dam 21 is further arranged, the welding bead dam 21 is connected with two sides of the connecting panel 11, and the welding bead dam 21 and the connecting panel 11 are made of an integrated material.

The weld bead 22 is provided with a weld bead dam 21 for blocking the weld bead 22, and the width of the weld bead dam 21 is 1 time of the thickness of the metal connecting plate 1.

One side of the welding bead dam 21 is connected with the connecting panel 11, the other side is connected with the middle plate 3, and the welding bead dam 21, the connecting panel 11 and the middle plate 3 are made of an integrated material. The welding bead dam 21 is the gusset that leaves when welding bead 22 makes, and its purpose is exactly for connecting connection panel 11, middle part board 3 for middle part board 3 can not drop at the in-process of transportation, and the welding process in later stage need not to fix a position middle part board 3 once more, improves welding efficiency.

Example 3

As shown in fig. 5 to 6, the present embodiment 2 is different in that:

the weld bead 22 is provided with a weld bead dam 21 for blocking the weld bead 22, and the width of the weld bead dam 21 is 1.2 times the thickness of the metal connecting plate 1. The thickness of the metal plate is 4 mm.

The welding seam track 4 and the welding seam track 4 only have two intersection points, the welding seam track 4 forms a closed-loop welding seam 41 after welding, and the middle plate 3 in the middle of the closed-loop welding seam 41 is divided into two parts. The welding seam track 4 and the welding seam track 4 only have two intersection points, the welding seam track 4 forms a closed-loop welding seam 41 after welding, and the middle plate 3 in the middle of the closed-loop welding seam 41 is divided into two parts.

The outer part of the closed-loop welding seam 41 is circular, and during welding, because welding defects are most easily caused during arc starting and arc stopping, by arranging the closed-loop welding seam and arranging a secondary welding seam inside the closed-loop welding seam, the final welding track end point is terminated in the middle area of the closed-loop welding seam or the whole welding seam after the welding seam of the secondary welding seam is welded. When the welding part is acted by external force, the welding track end point is in the middle area of the welding line, so that the welding track end point can be well protected, and the stability of the structure is improved.

The intersection of the weld track 4 and itself is a weld intersection 44, the number of singularities of the weld intersection 44 is 2, and the number of singularities is an odd number of lines drawn from the intersection.

Example 4

As shown in fig. 6 to 9, the present embodiment is different from embodiment 2 in that:

the closed loop weld joint 41 is circular on the outside and the closed loop weld joint 41 is internally spiral-shaped and connected with the closed loop weld joint. Since the welding track starting point 42 and the welding track ending point 43 are often weak points of welding quality, the weak welding track ending point 43 is arranged inside the closed-loop welding seam 41 in the embodiment by utilizing the inside of the closed-loop welding seam 41 as a stress insensitive point. Meanwhile, in the welding track welding process, the welding track passes through the welding track starting point 42 for the second time, so that the weak welding track starting point 42 of the welding quality in the traditional welding process becomes a welding process point, the welding weak point becomes a common welding point, and the welding defects are reduced; the welding track terminal 43 is arranged inside the closed-loop welding seam 41, when the whole welding structure is subjected to external force, stress firstly acts on the peripheral closed-loop welding seam 41, the stress is less transmitted to the welding weak point, namely the welding track terminal 43, and the influence of the external stress on the welding track terminal 43 is smaller, so that the quality and the stability of the whole welding structure are greatly improved.

The utility model provides a face welded structure, includes foretell metal face welded connection key, still includes the bottom plate, and metal connecting plate 1 and the laminating of bottom plate face are welded full path 2 through welder and are all welded the welding seam orbit 4 that forms after full with metal connecting plate 1 and bottom plate fixed connection. The thickness of the metal plate is 4 mm. Have welded connection key metal sheet through welding and bottom plate fixed connection, accomplished the face-to-face connection of board, it compares with traditional plug welding, groove welding, and the connecting effect is good, stable in structure.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims (10)

1. The utility model provides a metal face welding connection key, includes metal connecting plate (1), its characterized in that: the metal connecting plate (1) comprises a connecting panel (11), one or more strip-shaped welding beads (22) used for filling welding materials are arranged in the connecting panel (11), all the welding beads (22) form a whole welding path (2), a welding seam track (4) is formed after the whole welding path (2) is fully welded by a welding gun, and the welding seam track (4) has at least one intersection point with the welding seam track.

2. The metal plate surface welding connecting key according to claim 1, characterized in that: the welding seam track (4) comprises a welding track starting point (42) and a welding track end point (43), the welding track starting point (42) is connected with the welding track end point (43), and the welding gun completes one-time welding through starting welding and receiving welding.

3. The metal plate surface welding connecting key according to claim 1, characterized in that: the welding seam track (4) only has one intersection point with the welding seam track, and the welding seam track (4) is two intersecting curve sections or straight sections.

4. The metal plate surface welding connecting key according to claim 2, characterized in that: the welding seam track (4) only has one intersection point with the welding seam track, the welded welding seam track (4) forms a closed-loop welding seam (41), and the middle of the closed-loop welding seam (41) is provided with a whole middle plate (3).

5. The metal plate face welding connection key according to claim 2, characterized in that: the welding seam track (4) has two intersection points with the welding seam track, the welding seam track (4) forms a closed-loop welding seam (41) after welding, and the number of the middle plates (3) in the middle of the closed-loop welding seam (41) is two.

6. The metal plate face welding connection key according to claim 3 or 4, characterized in that: the welding bead dam (21) for blocking and separating the welding bead (22) is arranged on the welding bead (22), and the width of the welding bead dam (21) is 0.2-3 times of the thickness of the metal connecting plate (1).

7. The metal plate face welding connection key according to claim 6, characterized in that: the welding bead dam (21) is connected with two sides of the connecting panel (11), and the welding bead dam (21) and the connecting panel (11) are made of an integrated material; or one side of the welding bead dam (21) is connected with the connecting panel (11), the other side of the welding bead dam is connected with the middle plate (3), and the welding bead dam (21), the connecting panel (11) and the middle plate (3) are made of an integrated material.

8. The metal plate face welding connection key according to claim 4, characterized in that: and a secondary welding seam (45) is also arranged in the middle of the closed-loop welding seam (41), and a welding track end point (43) is positioned in the closed-loop welding seam (41).

9. The metal plate surface welding connecting key according to claim 1, characterized in that: the intersection point of the welding seam track (4) and the welding seam track is a welding intersection point (44), the number of odd points of the welding intersection point (44) is 0 or 2, and the number of the odd points refers to the number of lines led out from the intersection point and is an odd number.

10. A face-to-face welded structure comprising the metal plate face-to-face weld connection key according to claim 1, characterized in that: the welding gun is characterized by further comprising a bottom plate, the metal connecting plate (1) is attached to the surface of the bottom plate, and the metal connecting plate (1) is fixedly connected with the bottom plate through a welding seam track (4) formed after the welding gun completely welds the whole welding path (2).

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