CN217965480U - Welding auxiliary device and welding device - Google Patents

Abstract

The utility model provides a welding auxiliary device and welding set, wherein welding auxiliary device includes: a substrate; the first limiting piece is connected to the first end of the substrate; the second limiting piece is connected to the second end of the substrate, and a clamping space is formed between the first limiting piece and the second limiting piece; the first end of the guide rod is connected to the first end of the base plate through a first hinge structure, the second end of the guide rod is slidably arranged on the second limiting part through a second hinge structure, and the guide rod is angularly adjustably arranged relative to the base plate, so that the second end of the guide rod is provided with a plurality of adjusting positions on the second limiting part; the operation frame is arranged on the substrate and the guide rod along a straight line in a sliding manner, and a welding gun clamping part is arranged on the operation frame. The technical scheme of the application has effectively solved the problem that the welding seam is not straight when manual welding among the correlation technique.

Description

Welding auxiliary device and welding device

Technical Field

The utility model relates to the field of welding technique, particularly, relate to a welding auxiliary device and welding set.

Background

Welding operation can not be left in the process of mechanical manufacturing and mechanical maintenance, the carbon dioxide gas protection welding device in the related technology needs an operator to hold a welding gun by hand to perform manual welding operation, arm shaking of the operator can generate welding deviation, welding seams are not straight, and welding accuracy is affected.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a welding assisting device and a welding device, which solve the problem of the non-straight welding seam during the manual welding in the related art.

In order to achieve the above object, according to an aspect of the present invention, there is provided a welding assistance device including: a substrate; the first limiting piece is connected to the first end of the substrate; the second limiting piece is connected to the second end of the substrate, and a clamping space is formed between the first limiting piece and the second limiting piece; the first end of the guide rod is connected to the first end of the base plate through a first hinge structure, the second end of the guide rod is slidably arranged on the second limiting part through a second hinge structure, and the guide rod is angularly adjustably arranged relative to the base plate, so that the second end of the guide rod is provided with a plurality of adjusting positions on the second limiting part; the operation frame is arranged on the substrate and the guide rod in a sliding mode along a straight line, and a welding gun clamping part is arranged on the operation frame.

Further, first hinge structure is including setting up the first connecting hole on the first end of base plate, setting up the second connecting hole at the first end of guide bar and wear to establish the first fastener in first connecting hole and second connecting hole, and first fastener has the first not hard up position that makes the first end of guide bar around first fastener pivoted and makes the first end of guide bar be fixed in the first fastening position of the first end of base plate when first connecting hole and second connecting hole internal position are adjusted.

Further, the base plate and the guide bar are stacked.

Further, the second hinge structure includes a hinge base slidably disposed on one of the second end of the guide rod and the second limiting member, a connecting block disposed on the other of the second end of the guide rod and the second limiting member, and a second fastening member penetrating the hinge base and the connecting block, and the second fastening member has a second loose position enabling the second end of the guide rod to rotate around the second fastening member and a second fastening position enabling the second end of the guide rod to be fixed to the second limiting member when the position of the second fastening member is adjusted in the hinge base and the connecting block.

Further, when the second hinge structure includes a hinge base slidably disposed on the second limiting member and a connecting block disposed at the second end of the guide rod, the second limiting member includes a slide rail, and the hinge base includes a sliding sleeve slidably disposed outside the slide rail.

Furthermore, the first limiting piece comprises a first limiting plate and a connecting plate which are arranged at an angle, the connecting plate is connected to the first end of the guide rod, and the connecting plate is arranged in a telescopic manner along the direction of the first end of the base plate and the direction of the second end of the base plate; and/or the second limiting part further comprises a second limiting plate, the second limiting plate and the slide rail are arranged at an angle, and the first limiting plate and the second limiting plate are arranged at intervals and form a clamping space.

Furthermore, the guide rod comprises a barrel body part and a rod body part which is telescopically arranged in the barrel body part in a penetrating manner, a first stopping part is arranged on the part of the rod body part, which is positioned in the barrel body part, and a second stopping part which is matched with the first stopping part in an anti-falling manner is arranged on the barrel wall of the barrel body part.

Furthermore, a first linear slide way for the operating frame to be arranged in a sliding mode is arranged on the base plate, a second linear slide way for the operating frame to be arranged in a sliding mode is arranged on the guide rod, and the first linear slide way and the second linear slide way are communicated.

Further, the handling frame includes the slide bar, the setting is at the telescopic link of slide bar tip, set up in the fixed cover of the pars contractilis of telescopic link and wear to locate the third fastener of fixed cover, the one end of keeping away from the telescopic link of slide bar can slide in first straight line slide and second straight line slide, the flexible direction perpendicular to slide bar's of pars contractilis of telescopic link slip direction, fixed cover and third fastener form welder clamping part jointly, welder wears to locate in the fixed cover, the third fastener can cooperate with welder's lateral wall butt.

According to the utility model discloses a further aspect provides a welding set, including welder and welding auxiliary device, welding auxiliary device is foretell welding auxiliary device, and welder sets up in welding auxiliary device's welder clamping part along its axis direction position adjustablely.

Use the technical scheme of the utility model, welding auxiliary device includes: the device comprises a base plate, a first limiting piece, a second limiting piece, a guide rod and an operating frame. The first limiting piece is connected to the first end of the substrate, and the second limiting piece is connected to the second end of the substrate. A clamping space is formed between the first limiting part and the second limiting part. The object to be welded is placed in the clamping space, and the first limiting part and the second limiting part limit the displacement of the object to be welded, so that the object to be welded is fixed to the welding auxiliary device. The first end of the guide rod is connected to the first end of the base plate through a first hinge structure, the second end of the guide rod is slidably arranged on the second limiting part through a second hinge structure, and the guide rod is angularly adjustably arranged relative to the base plate, so that the second end of the guide rod is provided with a plurality of adjusting positions on the second limiting part. The operation frame is arranged on the substrate and the guide rod in a sliding mode along a straight line, and a welding gun clamping part is arranged on the operation frame. To treat that welded object places in the centre gripping space, first locating part, second locating part centre gripping are to be welded, fix welder in welder adds the portion of holding, and the drive operation frame carries out the straight line slip on base plate and guide bar, and the operation frame drives the welder straight line slip to make welder straight line slip, can make the welding seam straight. Therefore, the technical scheme of the application effectively solves the problem that the welding seam is not straight during manual welding in the related art. Because the angle between the guide rod and the base plate is adjustable, after an object to be welded is fixed, the angle between the guide rod and the base plate is adjusted according to the position of the object to be welded, and more welding requirements can be met.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of a welding device according to the invention;

fig. 2 is a schematic perspective view illustrating a first limiting member of the welding device of fig. 1;

fig. 3 is a schematic perspective view illustrating a hinge base of the welding device of fig. 1 sleeved on a second limiting member;

FIG. 4 shows a perspective view of a hinge mount of the welding device of FIG. 1;

FIG. 5 shows a perspective view of a welding gun and a handling frame of the welding apparatus of FIG. 1;

FIG. 6 illustrates a partial perspective view of the shank portion of the welding device of FIG. 1;

fig. 7 shows a schematic partial perspective view of the barrel portion of the welding device of fig. 1.

Wherein the figures include the following reference numerals:

1. a first limit piece; 101. a connecting sleeve portion; 102. a first limit plate; 103. a plate body portion; 104. a fourth fastener; 21. a first linear slide; 22. a second linear slideway; 3. a substrate; 4. a welding gun; 5. an operation frame; 501. a slide bar; 502. a telescopic rod; 503. fixing a sleeve; 504. an anti-slip sleeve; 505. a third fastener; 6. a second limiting member; 601. a chute; 602. a slide rail; 603. a second limiting plate; 7. hinging seat; 8. a barrel portion; 801. a second stopper portion; 9. a lever portion; 901. a first stopper portion; 10. a first hinge structure; 70. a second hinge structure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1, the welding assistance device of the present embodiment includes: the base plate 3, first locating part 1, second locating part 6, guide bar and handling frame 5. The first limiting member 1 is connected to a first end of the substrate 3, and the second limiting member 6 is connected to a second end of the substrate 3. A clamping space is formed between the first limiting part 1 and the second limiting part 6. The first end of the guide rod is connected to the first end of the base plate 3 through the first hinge structure 10, the second end of the guide rod is slidably disposed on the second limiting member 6 through the second hinge structure 70, and the guide rod is angularly adjustably disposed with respect to the base plate 3, so that the second end of the guide rod has a plurality of adjustment positions on the second limiting member 6. The operation frame 5 is provided on the substrate 3 and the guide bar so as to be slidable along a straight line, and the operation frame 5 is provided with a torch holding portion.

With the technical solution of this embodiment, the welding auxiliary device includes: the base plate 3, first locating part 1, second locating part 6, guide bar and handling frame 5. The first limiting member 1 is connected to a first end of the substrate 3, and the second limiting member 6 is connected to a second end of the substrate 3. A clamping space is formed between the first limiting part 1 and the second limiting part 6. The object to be welded is placed in the clamping space, and the first limiting part 1 and the second limiting part 6 limit the displacement of the object to be welded, so that the object to be welded is fixed to the welding auxiliary device. The first end of the guide rod is connected to the first end of the base plate 3 through the first hinge structure 10, the second end of the guide rod is slidably disposed on the second limiting member 6 through the second hinge structure 70, and the guide rod is angularly adjustably disposed with respect to the base plate 3, so that the second end of the guide rod has a plurality of adjustment positions on the second limiting member 6. The fixing frame operation frame 5 is slidably arranged on the substrate 3 and the guide rod along a straight line, and a welding gun clamping part is arranged on the fixing frame operation frame 5. An object to be welded is placed in the clamping space, the first limiting part 1 and the second limiting part 6 are adjusted to clamp the object to be welded and fixed on the welding auxiliary device, the welding gun 4 is fixed in the clamping part of the welding gun 4, the operation frame 5 is driven to linearly slide on the base plate 3 and the guide rod, and the operation frame 5 drives the welding gun 4 to linearly slide, so that the welding gun 4 linearly slides, and a welding seam can be straightened. Therefore, the technical scheme of the embodiment effectively solves the problem that the welding seam is not straight during manual welding in the related art. Because the angle between the guide rod and the base plate 3 is adjustable, after an object to be welded is fixed, the angle between the guide rod and the base plate 3 is adjusted according to the position of the object to be welded, so that more welding requirements can be met.

The above-described slidable mounting of the operation frame 5 on the base plate 3 and the guide bar along a straight line means that the trajectory along which the operation frame 5 slides on the base plate 3 and the guide bar is a straight line.

As shown in fig. 1, the first hinge structure 10 includes a first connection hole disposed at the first end of the base plate 3, a second connection hole disposed at the first end of the guide bar, and a first fastening member penetrating through the first connection hole and the second connection hole, and the first fastening member has a first loosening position for rotating the first end of the guide bar around the first fastening member and a first fastening position for fixing the first end of the guide bar to the first end of the base plate 3 when the first connection hole and the second connection hole are adjusted in position. After an object to be welded is placed in the clamping space, the first fastener is located at a first loosening position, so that the first end of the guide rod rotates around the first fastener, the angle between the guide rod and the substrate 3 can be adjusted, the angle between the guide rod and the substrate 3 is adjusted according to the position of the object to be welded, the first fastener is located at a first fastening position after adjustment is completed, so that the first end of the guide rod is fixed at the first end of the substrate 3, the first end of the guide rod is fixedly connected with the substrate 3, and the welding auxiliary device is more stable during welding.

As shown in fig. 1, when the angle between the guide bar and the substrate 3 is adjusted, the substrate 3 and the guide bar are stacked, so that the interference between the first end of the guide bar and the first end of the substrate 3 is avoided, and the angle adjustment between the guide bar and the substrate 3 is smoother.

As shown in fig. 1, the second hinge structure 70 includes a hinge base 7 slidably disposed on the second limiting member 6, a connecting block disposed on the second end of the guide rod, and a second fastening member penetrating through the hinge base 7 and the connecting block, and the second fastening member has a second loose position enabling the second end of the guide rod to rotate around the second fastening member and a second fastening position enabling the second end of the guide rod to be fixed to the second limiting member 6 when the position of the second fastening member is adjusted in the hinge base 7 and the connecting block. After an object to be welded is placed in the clamping space, the second fastener is located at a second loose position, so that the second end of the guide rod rotates around the second fastener, the angle between the guide rod and the second limiting part 6 can be adjusted, the angle between the guide rod and the second limiting part 6 is adjusted according to the position of the object to be welded, after the adjustment is completed, the second fastener is located at a second fastening position, so that the second end of the guide rod is fixed to the second limiting part 6, and the second end of the guide rod is fixedly connected with the second limiting part 6, so that the welding auxiliary device is more stable during welding.

Of course, in the embodiment not shown in the drawings, the second hinge structure includes a hinge base slidably disposed on the second end of the guide rod and a connecting block disposed on the second limiting member.

As shown in fig. 1, 3 and 4, when the second hinge structure 70 includes a hinge base 7 slidably disposed on the second limiting member 6 and a connecting block disposed on the second end of the guiding rod, the second limiting member 6 includes a sliding rail 602, and the hinge base 7 includes a sliding sleeve slidably sleeved outside the sliding rail 602. The sliding sleeve of the hinge base 7 slides on the sliding rail 602 of the second limiting member 6, the connecting block at the second end of the guide rod is hinged to the hinge base 7 of the second limiting member 6, so that the guide rod is rotatably connected to the hinge base 7, and the sliding of the hinge base 7 on the sliding rail 602 of the second limiting member 6 can drive the second end of the guide rod to move along the sliding rail 602 of the second limiting member 6. In this embodiment, a sliding groove 601 is disposed on a side wall of the sliding rail 602, a part of the sliding sleeve of the hinged support 7 passes through the sliding groove 601, and the sliding sleeve is sleeved on the sliding rail 602.

As shown in fig. 1 and 2, the first limiting member 1 includes a first limiting plate 102 disposed at an angle and a connecting plate connected to the first end of the guiding rod, the connecting plate being telescopically disposed along the first end of the base plate 3 and the second end of the base plate 3. The connecting plate includes connecting sleeve portion 101 and the plate body portion 103 that telescopically wears to locate connecting sleeve portion 101, and the first end of plate body portion 103 is fixed in the tip of the first end of base member, and the second end of plate body portion 103 stretches into in connecting sleeve portion 101, wears to be equipped with fourth fastener 104 on the lateral wall of connecting sleeve portion 101, and fourth fastener 104 can cooperate with the lateral wall face butt of the second end of plate body portion 103. The telescopic length of the plate body portion 103 is adjusted according to the size of the object to be welded, the size of the clamping space is adjusted to be suitable for the object to be welded, the object to be welded is placed in the clamping space, then the fourth fastening piece 104 is fastened, the connecting sleeve portion 101 is fixed to the plate body portion 103, the first limiting plate 102 is fixed to limit the displacement of the object to be welded, and the object to be welded can be fixed to the welding auxiliary device. The second limiting member 6 further includes a second limiting plate 603, and the second limiting plate 603 and the slide rail 602 are disposed at an angle, so that the sliding sleeve of the hinge base 7 does not interfere with the object to be welded, which is clamped by the second limiting plate 603, when sliding on the slide rail 602 of the second limiting member 6. The first limiting plate 102 and the second limiting plate 603 are arranged at intervals and form a clamping space, so that an object to be welded is fixed in the clamping space, and the welding is more stable.

In this embodiment, the first limiting member 1 includes a first limiting plate 102 and a connecting plate, the first limiting plate 102 and the connecting plate are disposed at an angle, the connecting plate is connected to the first end of the guiding rod, and the connecting plate is telescopically disposed along the first end of the base plate 3 and the second end of the base plate 3. Or the second limiting member 6 further includes a second limiting plate 603, the second limiting plate 603 forms an angle with the slide rail 602, and the first limiting plate 102 and the second limiting plate 603 are disposed at an interval and form a clamping space. Or, the second limiting member 6 further includes a second limiting plate 603, the second limiting plate 603 forms an angle with the slide rail 602, and the first limiting plate 102 and the second limiting plate 603 are disposed at an interval and form a clamping space.

As shown in fig. 1, 6 and 7, the guide rod includes a cylindrical body 8 and a rod body 9 telescopically inserted into the cylindrical body 8. When the hinge base 7 slides on the second limiting member 6, the rod body portion 9 extends and retracts in the barrel portion 8 so that the length of the guide rod can be adjusted, and the angle between the substrate 3 and the guide rod can be adjusted. The part of the shaft part 9 located in the barrel part 8 is provided with a first stopping part 901, and the barrel wall of the barrel part 8 is provided with a second stopping part 801 which is matched with the first stopping part 901 in a disengaging-proof way. The first stopper 901 has a larger area than the second stopper 801 to prevent the portion of the lever body 9 located inside the cartridge body 8 from coming off the cartridge body 8.

As shown in fig. 1, a first linear slideway 21 for the operation frame 5 to be slidably disposed is disposed on the base plate 3, a second linear slideway 22 for the operation frame 5 to be slidably disposed is disposed on the guide rod, and the first linear slideway 21 and the second linear slideway 22 are communicated with each other. When the operation frame 5 is to be transferred from the first linear slideway 21 to the second linear slideway 22, the operation frame 5 can be slid into the second linear slideway 22 from the first linear slideway 21 due to the communicated arrangement of the first linear slideway 21 and the second linear slideway 22, so that the operation is simpler and more convenient.

In addition, the "linear slide" of the first linear slide 21 and the second linear slide 22 means that the slides extend in a linear direction.

As shown in fig. 1 and 5, the operation frame 5 includes a slide rod 501, an expansion rod 502 provided at an end of the slide rod 501, a fixing sleeve 503 provided at an expansion portion of the expansion rod 502, and a third fastener 505 inserted into the fixing sleeve 503. One end of the sliding rod 501, which is far away from the telescopic rod 502, can slide in the first linear slideway 21 and the second linear slideway 22, and the telescopic part of the telescopic rod 502 extends and retracts in a direction perpendicular to the sliding direction of the sliding rod 501. The telescopic rod 502 is preferably an electric telescopic rod 502 capable of adjusting the telescopic speed and the telescopic length, and the welding gun 4 performs reciprocating motion perpendicular to the sliding direction of the sliding rod 501 under the action of the electric telescopic rod 502 while performing linear motion so as to meet the welding operation specification and improve the welding quality. In this embodiment, the outer sidewall of the telescopic rod 502 is further provided with an anti-slip sleeve 504 to reduce safety accidents caused by hand slip of an operator, ensure the safety of the operator, and improve the welding accuracy. The fixing sleeve 503 and the third fastener 505 together form a welding gun clamping part, the welding gun 4 is arranged in the fixing sleeve 503 in a penetrating mode, and the third fastener 505 can be in abutting fit with the side wall of the welding gun 4. The welding gun 4 is inserted into the fixing sleeve 503 in an adjustable position along the axial direction, the welding gun 4 is adjusted to enable the welding gun 4 to be in a proper position in the fixing sleeve 503, and the third fastening piece 505 is fastened to enable the welding gun 4 to be fixed in the fixing sleeve 503.

The working principle of the welding assisting device of the embodiment is as follows: an object to be welded is placed in the clamping space, and the object to be welded is fixed on the welding auxiliary device through the first limiting part 1 and the second limiting part 6. The third fastening member 505 is fastened to fix the welding torch 4 in the fixing sleeve 503, so that the welding torch 4 is fixed to the operation frame 5. The position of the sliding sleeve on the second limiting part 6 is adjusted according to the position of the object to be welded, which needs to be welded, and at the moment, the rod body part 9 is matched with the cylinder body part 8, so that the guide rod is in a proper length, and the angle between the base plate 3 and the rod body part 9 is adjusted. The first fastener and the second fastener are fastened to fix the base plate 3, the second limiting member 6 and the lever body portion 9 relatively. The operation frame 5 is driven to make the welding gun 4 move linearly along the direction of the first linear slideway 21 of the first limiting part 1 or the second linear slideway 22 of the rod body part 9, so as to make the welding seam straight.

The present application further provides a welding device, as shown in fig. 1, the welding device of the present embodiment includes a welding gun 4 and a welding auxiliary device, the welding auxiliary device is the above-mentioned welding auxiliary device, and the welding gun 4 is adjustably disposed on a welding gun holding portion of the welding auxiliary device along an axial direction position thereof. Since the welding auxiliary device can solve the problem that the welding seam is not straight during manual welding in the related art, the welding device with the welding auxiliary device can solve the same technical problem.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A welding assistance device, comprising:

a substrate (3);

a first stopper (1) connected to a first end of the substrate (3);

the second limiting piece (6) is connected to the second end of the substrate (3), and a clamping space is formed between the first limiting piece (1) and the second limiting piece (6);

the first end of the guide rod is connected to the first end of the base plate (3) through a first hinge structure (10), the second end of the guide rod is slidably arranged on the second limiting part (6) through a second hinge structure (70), and the guide rod is angularly adjustably arranged relative to the base plate (3) so that the second end of the guide rod has a plurality of adjusting positions on the second limiting part (6);

the welding gun positioning device comprises an operating frame (5), wherein the operating frame (5) is arranged on the base plate (3) and the guide rod in a sliding mode along a straight line, and a welding gun clamping part is arranged on the operating frame (5).

2. The welding assistance device according to claim 1, wherein the first hinge structure (10) comprises a first connection hole provided at the first end of the base plate (3), a second connection hole provided at the first end of the guide bar, and a first fastening member inserted into the first connection hole and the second connection hole, the first fastening member having a first loose position allowing the first end of the guide bar to rotate around the first fastening member and a first fastening position allowing the first end of the guide bar to be fixed to the first end of the base plate (3) when the first connection hole and the second connection hole are adjusted in position.

3. Welding assistance device according to claim 2, characterised in that the base plate (3) is arranged in layers with the guide bar.

4. The welding assistance device according to claim 1, wherein the second hinge structure (70) comprises a hinge base (7) slidably disposed on one of the second end of the guide rod and the second retaining member (6), a connecting block disposed on the other of the second end of the guide rod and the second retaining member (6), and a second fastening member passing through the hinge base (7) and the connecting block, the second fastening member having a second loose position allowing the second end of the guide rod to rotate about the second fastening member and a second fastening position allowing the second end of the guide rod to be fixed to the second retaining member (6) when the position in the hinge base (7) and the connecting block is adjusted.

5. The welding assistance device according to claim 4, wherein when the second hinge structure (70) comprises the hinge base (7) slidably disposed on the second limiting member (6) and the connecting block disposed on the second end of the guiding rod, the second limiting member (6) comprises a sliding rail (602), and the hinge base (7) comprises a sliding sleeve slidably sleeved outside the sliding rail (602).

6. Welding assistance device according to claim 5,

the first limiting piece (1) comprises a first limiting plate (102) and a connecting plate, wherein the first limiting plate and the connecting plate are arranged at an angle, the connecting plate is connected to the first end of the guide rod, and the connecting plate is arranged in a telescopic manner along the direction of the first end of the base plate (3) and the direction of the second end of the base plate (3);

and/or, the second limiting part (6) further comprises a second limiting plate (603), the second limiting plate (603) and the slide rail (602) are arranged at an angle, and the first limiting plate (102) and the second limiting plate (603) are arranged at intervals and form the clamping space.

7. The welding auxiliary device according to claim 1, wherein the guiding rod comprises a barrel portion (8) and a rod portion (9) telescopically inserted into the barrel portion (8), a first stopping portion (901) is disposed on a portion of the rod portion (9) located in the barrel portion (8), and a second stopping portion (801) in anti-slip fit with the first stopping portion (901) is disposed on a barrel wall of the barrel portion (8).

8. The welding auxiliary device according to claim 1, characterized in that a first linear slideway (21) is arranged on the base plate (3) for the operation frame (5) to be slidably arranged, a second linear slideway (22) is arranged on the guide rod for the operation frame (5) to be slidably arranged, and the first linear slideway (21) and the second linear slideway (22) are communicated.

9. The welding auxiliary device according to claim 8, characterized in that the operation frame (5) comprises a slide bar (501), a telescopic rod (502) arranged at an end of the slide bar (501), a fixing sleeve (503) arranged at a telescopic part of the telescopic rod (502), and a third fastener (505) arranged through the fixing sleeve (503), wherein one end of the slide bar (501) far away from the telescopic rod (502) can slide in the first linear slideway (21) and the second linear slideway (22), the telescopic part of the telescopic rod (502) extends in a direction perpendicular to the sliding direction of the slide bar (501), the fixing sleeve (503) and the third fastener (505) together form the welding gun clamping part, a welding gun (4) is arranged through the fixing sleeve (503), and the third fastener (505) can be in abutting fit with a side wall of the welding gun (4).

10. A welding device comprising a welding torch (4) and a welding assist device, characterized in that the welding assist device is the welding assist device according to any one of claims 1 to 9, and the welding torch (4) is position-adjustably provided in an axial direction thereof at a torch holding portion of the welding assist device.

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