Column bottom foot welding tool clamp and welding tool

Abstract

The utility model belongs to the technical field of goods shelf manufacturing, and discloses a column bottom foot welding tool clamp and a welding tool. The first positioning assembly comprises the first positioning plate and the first positioning pin, and different types of first positioning assemblies are replaced, so that quick and accurate positioning of different types of U-shaped sleeves can be realized; the second positioning assembly is detachably arranged on the clamp base so as to be replaced according to the specific specification of the to-be-welded column bottom plate, and the column bottom plate is rapidly and accurately fixed; therefore, the fixture can be adjusted according to the specific specification of the column bottom foot to be welded, and the universality and the applicability of the fixture are improved; meanwhile, the welding tool clamp does not need to use a plurality of tool clamps to adapt to column bottom feet of different specifications any more, and waste of manpower and material cost is reduced; and the tool clamp can be used for quickly and accurately positioning, so that the welding efficiency and the welding quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shelf manufacturing, in particular to a column foot welding fixture and a welding fixture. Background Art

[0002] The development of modern intelligent warehouses is booming, becoming an important tool for improving logistics efficiency and management level. With the help of advanced technologies such as artificial intelligence, the Internet of Things and automation systems, intelligent warehouse shelves have realized intelligent operations for cargo storage, management and retrieval, bringing revolutionary changes to the warehousing industry. Traditional warehousing often requires a lot of manpower for cargo handling, classification and inventory, while intelligent shelves can achieve efficient management and positioning of cargo through automation, reducing the time and error rate of manual operation, thereby improving the operational efficiency of warehouses.

[0003] Smart warehouse shelves are storage systems composed of multiple components such as columns, beams, and pallets. The column base is an important component that connects the shelf columns to the ground. It is used to stabilize the columns and disperse the weight of the shelves. The relationship between them is crucial to the stability, load-bearing capacity, and overall structural strength of the shelves. Figure 1 As shown, in the prior art, the column foot 10 is usually composed of a column base plate 11 and a U-shaped sleeve 12.

[0004] Since shelves need to adapt to different environmental requirements in different usage scenarios, the types of column bases are gradually becoming more diverse, and sometimes even need to be customized according to specific circumstances. However, traditional column base welding tools often use simple welding tool positioning methods, which leads to slow positioning speed, low welding efficiency, and poor welding quality. In addition, traditional welding tool positioning devices cannot be compatible with multiple specifications at the same time, so multiple tooling fixtures are needed to adapt to column bases of different specifications, which makes the welding process complicated and wastes labor and material costs. Utility Model Content

[0005] The purpose of the utility model is to provide a column base welding fixture and welding fixture, which can effectively avoid the problems of simple welding fixture positioning, slow positioning speed, low welding efficiency and poor welding quality, and at the same time can be compatible with column bases of various specifications.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A column foot welding fixture, the column foot comprises a column bottom plate and a U-shaped sleeve, wherein the column foot welding fixture comprises:

[0008] Clamp base;

[0009] A fixture backing plate, the fixture backing plate is arranged on the fixture base;

[0010] A first positioning assembly, the first positioning assembly comprising a first positioning plate and a first positioning pin, the first positioning plate being detachably disposed on the fixture support plate, the first positioning pin being disposed on a side of the first positioning plate facing the U-shaped sleeve, and the first positioning pin being configured to fix the U-shaped sleeve;

[0011] A second positioning assembly is detachably disposed on the fixture base, and the second positioning assembly is configured to fix the column base plate.

[0012] Optionally, the second positioning assembly includes a second positioning plate and a second positioning pin, the second positioning plate is detachably disposed on the fixture base, a first positioning hole is formed on the second positioning plate, the second positioning pin is inserted into the first positioning hole, and the second positioning pin is configured to fix the column base plate.

[0013] Optionally, a first positioning groove is formed on the fixture base, and the second positioning plate is embedded in the first positioning groove.

[0014] Optionally, the second positioning assembly further includes a first hanging ring, and the first hanging ring is arranged on a side of the second positioning plate away from the fixture base.

[0015] Optionally, the first positioning assembly further comprises a movable plate, which is arranged on the fixture support plate for movement in a direction approaching or moving away from the fixture base, and the first positioning plate is detachably arranged on a side of the movable plate facing the U-shaped sleeve.

[0016] Optionally, the first positioning assembly also includes a positioning rod, which is arranged on the side of the movable plate facing the clamp backing plate, and the clamp backing plate has a plurality of second positioning holes along a direction approaching or away from the clamp base, and the positioning rod can be inserted into the second positioning hole.

[0017] Optionally, a second positioning groove is provided on the movable plate, and the first positioning plate can be embedded in the second positioning groove.

[0018] Optionally, the first positioning assembly further includes a clamping portion, the clamping portion is disposed on the movable plate, and an output end of the clamping portion can be moved close to or away from the first positioning plate to clamp or release the U-shaped sleeve.

[0019] Optionally, the clamping portion includes a fixed seat, a push arm and a limiting arm, the fixed seat is arranged on the movable plate, the first end of the push arm is hinged to the fixed seat so that the second end of the push arm can be close to or away from the first positioning plate, and the limiting arm is hinged to the fixed seat, and the limiting arm can limit the push arm so that the second end of the push arm maintains a tendency to approach the first positioning plate.

[0020] On the other hand, the utility model provides a welding tool, including a welding base and a column foot welding tool fixture in any of the above schemes, wherein the fixture base is arranged on the welding base.

[0021] Beneficial effects of the utility model:

[0022] A column base welding fixture, which can realize fast and accurate positioning of different types of U-shaped sleeves by replacing different types of first positioning components by means of a first positioning component including a first positioning plate and a first positioning pin; by detachably arranging the second positioning component on the fixture base so as to replace it according to the specific specifications of the column base plate to be welded, so as to quickly and accurately fix the column base plate; by detachably designing the first positioning component and the second positioning component to be detachable and movable, it can be adjusted according to the specific specifications of the column base to be welded, so that the column base welding fixture can flexibly adapt to column base plates and U-shaped sleeves of different specifications, thereby improving the versatility and applicability of the fixture; at the same time, the fixture no longer needs to use multiple fixtures to adapt to column bases of different specifications, which reduces the complexity of the fixture, reduces the waste of manpower and material costs, and improves production efficiency and economic benefits; and the fixture can quickly and accurately position, thereby improving welding efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a stereogram of a column foot of the prior art;

[0024] Figure 2 It is a structural diagram of the column base welding fixture of the utility model;

[0025] Figure 3 It is a structural diagram of the clamp bottom plate of the utility model;

[0026] Figure 4 is an exploded view of the second positioning assembly of the utility model;

[0027] Figure 5 It is an exploded view of the first positioning assembly of the utility model;

[0028] Figure 6 It is a structural diagram of the clamping part of the utility model;

[0029] Figure 7It is an assembly drawing of the column foot welding fixture and the column foot of the utility model;

[0030] In the figure:

[0031] 10. Column foot; 11. Column base plate; 12. U-shaped sleeve; 13. U-shaped sleeve positioning hole; 14. Column base plate positioning hole;

[0032] 20. Clamp base; 21. First positioning groove; 22. Second lifting ring;

[0033] 30. Clamp backing plate; 31. Second positioning hole;

[0034] 40. first positioning assembly; 41. moving plate; 42. second positioning groove; 43. first positioning plate; 44. first positioning pin; 45. clamping portion; 451. fixing seat; 452. top arm; 4521. rotating arm; 4522. top arm; 4523. buffer pad; 453. limiting arm; 4531. limiting arm rod; 4532. handle; 4533. third limiting arm rod; 454. limiting protrusion; 46. positioning rod;

[0035] 50. Second positioning assembly; 51. Second positioning plate; 52. Second positioning pin; 53. First positioning hole; 54. Handle; 55. First lifting ring. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper", "lower", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of description and simplified operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Please refer to Figure 2-Figure 7As shown, the present application provides a column base welding fixture, which includes a fixture base 20, a fixture backing plate 30, a first positioning component 40 and a second positioning component 50; the fixture backing plate 30 is arranged on the fixture base 20, and the first positioning component 40 includes a first positioning plate 43 and a first positioning pin 44, the first positioning plate 43 is detachably arranged on the fixture backing plate 30, and the first positioning pin 44 is arranged on the side of the first positioning plate 43 facing the U-shaped sleeve, and the first positioning pin 44 can fix the U-shaped sleeve 12. It should be noted here that the first positioning pin 44 is inserted into the U-shaped sleeve positioning hole 13 on the U-shaped sleeve 12 to achieve rapid positioning of the first positioning plate 43. According to different specifications of the U-shaped sleeve 12, by replacing the first positioning plate 43 and cooperating with the first positioning pin The positioning function of 44 can realize fast and accurate positioning of different types of U-shaped sleeves 12; the second positioning component 50 can fix the column base plate 11, and by detachably arranging the second positioning component 50 on the fixture base 20, the second positioning component 50 can be replaced according to the specifications of the column base plate 11 of different column base feet 10. This flexible design enables the welding fixture to adapt to a variety of different types and specifications of column base plates 11, thereby improving the applicability and versatility of the welding fixture; at the same time, by fixing the column base plate 11, the second positioning component 50 can ensure the accurate positioning of the column base foot 10 during the welding process, thereby helping to improve the accuracy and quality of welding; at the same time, the detachable second positioning component 50 makes the maintenance and repair of the welding fixture more convenient. Therefore, by designing the first positioning component 40 and the second positioning component 50 to be detachable and movable, they can be adjusted according to the specific specifications of the column base 10 to be welded, so that the column base welding fixture can flexibly adapt to column base plates 11 and U-shaped sleeves 12 of different specifications, thereby improving the versatility and applicability of the welding fixture; that is, during welding, it is no longer necessary to use multiple welding fixtures to adapt to column base plates 11 and U-shaped sleeves 12 of different specifications, which reduces the complexity of the tooling, reduces the waste of manpower and material costs, and improves production efficiency and economic benefits; and the welding fixture can quickly, accurately and easily position the column base 10, thereby improving welding efficiency and quality, and reducing welding defects or errors caused by inaccurate positioning.

[0041] like Figure 4As shown, in some embodiments, the second positioning assembly 50 includes a second positioning plate 51 and a second positioning pin 52. The second positioning plate 51 is detachably arranged on the fixture base 20. The second positioning plate 51 is provided with a first positioning hole 53. The second positioning pin 52 can be inserted into the first positioning hole 53. By placing the column base 10 on the matching second positioning plate 51, the second positioning pin 52 is used to penetrate the column base plate positioning hole 14 and the first positioning hole 53 on the column base foot 10, so that the column base foot 10 can be quickly and accurately fixed. Therefore, the second positioning pin 52 is inserted into the first positioning hole 53, which helps to ensure the accurate positioning of the column base plate 11 during the welding process, thereby improving the accuracy and quality of welding; at the same time, the reliability and stability of the welding tooling fixture are ensured. Once the column base plate 11 is clamped and fixed, the second positioning pin 52 can effectively maintain the stability of the positioning, thereby avoiding errors or movements of the column base foot 10 during the welding process. Since the second positioning plate 51 is detachable, the second positioning plate 51 with different types of first positioning holes 53 can be replaced or adjusted as needed to adapt to column base plates 11 of different specifications, thereby making the adjustment process of the welding fixture simple and quick, saving time and labor costs. Furthermore, a handle 54 is provided on the second positioning pin 52, and the operator can quickly and accurately remove and install the second positioning pin 52 by holding the handle 54.

[0042] like Figure 3 As shown, in some embodiments, a first positioning groove 21 is provided on the fixture base 20, and the second positioning plate 51 is embedded in the first positioning groove 21 to achieve a detachable connection between the two. When the second positioning plate 51 is embedded in the first positioning groove 21, the first positioning groove 21 can provide a more stable support and fixation for the second positioning plate 51, ensuring that the welding fixture remains stable during operation, and avoiding the inaccurate positioning of the workpiece due to the movement or shaking of the fixture; at the same time, the first positioning groove 21 enables the second positioning plate 51 to be fixed at a specific position, so that the first positioning groove 21 provides a precise positioning reference point for the second positioning plate 51, which helps to ensure the accurate positioning of the column base plate 11 during the welding process, and improves the accuracy and quality of the work. In other embodiments, the second positioning plate 51 can be connected to the fixture base 20 by, but not limited to, a snap connection or a bolt connection. In some embodiments, the second positioning assembly 50 further includes a first lifting ring 55, which is disposed on a side of the second positioning plate 51 away from the fixture base 20. By applying an external force to the first lifting ring 55, the second positioning plate 51 can be easily plugged in and out, thereby improving the convenience of disassembly and replacement of the second positioning assembly 50. Exemplarily, the first lifting ring 55 may be disposed in a manner that is not limited to symmetrically disposing a plurality of first lifting rings 55 on the second positioning plate 51, and the symmetrical arrangement can make the hoisting process more stable.

[0043] like Figure 5As shown, in some embodiments, the first positioning assembly 40 also includes a movable plate 41, and the movable plate 41 is movably arranged on the clamp support plate 30 in a direction close to or away from the clamp base 20. The first positioning plate 43 is detachably arranged on the side of the movable plate 41 facing the U-shaped sleeve 12. The movable plate 41 can be adjusted according to the height of the U-shaped sleeve positioning hole 13, so that the first positioning assembly 40 can accurately adjust its position according to the height of the U-shaped sleeve positioning hole 13 to be assembled. The first positioning plate 43 is detachably arranged on the movable plate 41 and accurately adjusted according to the width of the U-shaped sleeve positioning hole 13. This facilitates the rapid replacement or adjustment of the first positioning assembly 40, thereby improving the speed and accuracy of positioning the U-shaped sleeve 12. In some embodiments, the first positioning assembly 40 also includes a positioning rod 46, which is arranged on the side of the movable plate 41 facing the clamp back plate 30, and the clamp back plate 30 is provided with a plurality of second positioning holes 31 in the direction close to or away from the clamp base 20, and the positioning rod 46 can be inserted into the second positioning holes 31; the plurality of second positioning holes 31 can provide a variety of positioning options, so that the positioning rod 46 arranged on the surface of the movable plate 41 can be inserted into the second positioning holes 31 at different positions to achieve fast and accurate positioning of the movable plate 41, wherein the positioning rod 46 can be but is not limited to being set in the form of a pin or a tapered rod; or the positioning rod 46 can be set as a threaded rod, and when the threaded rod passes through the second positioning hole 31, the movable plate 41 and the clamp back plate 30 are interlocked by the nut.

[0044] In order to fix the U-shaped sleeve 12 on the column base 10, a first positioning pin 44 is provided on the side of the first positioning plate 43 facing the U-shaped sleeve 12, and the first positioning pin 44 is inserted into the U-shaped sleeve positioning hole 13 on the U-shaped sleeve 12 to realize the rapid positioning of the first positioning plate 43. In the current embodiment, in order to quickly replace the first positioning plate 43 and realize the detachable connection between the first positioning plate 43 and the movable plate 41, a second positioning groove 42 is provided on the movable plate 41, and the first positioning plate 43 can be embedded in the second positioning groove 42. The second positioning groove 42 can provide an accurate positioning reference point for the first positioning plate 43, so that the first positioning plate 43 can be fixed at a specific position, which helps to ensure the accurate positioning of the U-shaped sleeve 12 during the welding process. When it comes to U-shaped sleeves 12 with different types of U-shaped sleeve positioning holes 13, it is only necessary to plug and unplug the first positioning plate 43 with first positioning pins 44 of different specifications to the second positioning groove 42.

[0045] In some embodiments, the first positioning assembly 40 also includes a clamping portion 45, which is disposed on the movable plate 41. The output end of the clamping portion 45 can be close to or away from the first positioning plate 43 to clamp or release the U-shaped sleeve 12; the clamping portion 45 can provide a stable and precise clamping force for the U-shaped sleeve 12, ensuring that the position of the U-shaped sleeve 12 in the welding fixture is stable and reliable, which helps to ensure the stability and safety of welding.

[0046] like Figure 6 As shown, in some embodiments, the clamping portion 45 includes a fixed seat 451 and a push arm 452, the fixed seat 451 is arranged on the movable plate 41, and the connection method can be but not limited to a detachable connection or a fixed connection through a screw; the first end of the push arm 452 is hinged to the fixed seat 451, so that the second end of the push arm 452 can rotate relative to the fixed seat 451 around the axis of the hinge, so that the second end of the push arm 452 can be close to or away from the movable plate 41, so as to push against the U-shaped sleeve 12. Exemplarily, the push arm 452 includes a rotating arm 4521 and a top arm 4522, the rotating arm 4521 and the top arm 4522 form an L-shaped structure, and the end of the rotating arm 4521 away from the top arm 4522 is hinged to the fixed seat 451, so that rotating the rotating arm 4521 can make the top arm 4522 away from the end of the rotating arm 4521 push against or away from the U-shaped sleeve 12. Furthermore, in order to avoid extrusion deformation caused by the top arm 4522 abutting against the U-shaped sleeve 12, a buffer pad 4523 is provided at the end of the top arm 4522 away from the rotating arm 4521. Exemplarily, the buffer pad 4523 can be, but is not limited to, a rubber pad. Furthermore, in order to adapt to U-shaped sleeves 12 of different thicknesses, a through hole is provided at one end of the rotating arm 4521 away from the fixing seat 451, and the top arm 4522 is plugged into the above-mentioned through hole. The top arm 4522 is provided with spaced locking pieces to lock the top arm 4522 on the rotating arm 4521, and then the abutting force is adjusted by adjusting the degree to which the top arm 4522 is plugged into the rotating arm 4521. In the current embodiment, the top arm 4522 adopts a stud and the locking piece adopts a nut.

[0047] In order to ensure that the abutting arm 452 does not unexpectedly detach from the U-shaped sleeve 12 when abutting, a limiting arm 453 is further provided on the fixed seat 451, and the first end of the limiting arm 453 is hinged to the fixed seat 451, so that the second end of the limiting arm 453 can rotate relative to the fixed seat 451 around the axis of the hinge, and the limiting arm 453 can abut the abutting arm 452, so that it maintains the tendency to abut against the U-shaped sleeve 12. Specifically, the limiting arm 453 includes two limiting arm rods 4531, the first ends of the two limiting arm rods 4531 are spaced opposite to each other and are hinged on the fixing seat 451, so that the abutting arm 452 can be located between the two limiting arm rods 4531 when abutting the U-shaped sleeve 12, and the second ends of the two limiting arm rods 4531 are connected; that is, after the abutting arm 452 abuts against the U-shaped sleeve 12, the limiting arm 453 is rotated so that the abutting arm 452 abuts between the two limiting arm rods 4531, thereby limiting the abutting arm 452; and when the clamping part 45 wants to release the U-shaped sleeve 12, it only needs to reversely rotate the abutting arm 452 to release the restriction. Furthermore, in order to facilitate the operator to press and lift the limiting arm 453 to control the movement state of the clamping part 45, the second ends of the two limiting arm rods 4531 are also provided with handles 4532. Furthermore, a limiting protrusion is provided on the fixing seat 451. When the limiting arm 453 limits the abutting arm 4522, the first end of the limiting arm rod 4531 abuts against the limiting protrusion 454 to prevent the limiting arm 453 from continuing to rotate and squeeze the abutting arm 452, thereby ensuring that the abutting top will not excessively squeeze the abutting arm 452, thereby avoiding deformation of the U-shaped sleeve 12.

[0048] Furthermore, a third limiting arm 4533 is clamped between the two limiting arm rods of the limiting arm 453, a groove is opened on the rotating arm 4521, one end of the third limiting arm 4533 extends into the groove and is connected to the rotating arm 4521, and the other end of the third limiting arm 4533 is connected to the limiting arm 4531. When the limiting arm 453 is rotated, the supporting arm 452 can be driven to move synchronously to improve efficiency and make the operation more labor-saving.

[0049] It should be noted that in the above embodiment, the push arm 452 can be, but is not limited to, hinged to the fixed seat 451 by a rotating shaft or a hinge; the limiting arm rod 4531 can be, but is not limited to, hinged to the fixed seat 451 by a rotating shaft or a hinge.

[0050] The present application also provides a welding fixture, including a welding base and a column foot welding fixture in any of the above schemes, wherein the fixture base 20 is arranged on the welding base, and the first positioning component 40 includes a first positioning plate 43 and a first positioning pin 44. By replacing different types of first positioning components 40, it is possible to achieve fast and accurate positioning of different types of U-shaped sleeves 12; by detachably arranging the second positioning component 50 on the fixture base 20, it can be replaced according to the specific specifications of the column base plate 11 to be welded, and the column base plate 11 can be quickly and accurately fixed; by The second positioning component 50 is designed to be detachable and movable, and can be adjusted according to the specific specifications of the column base 10 to be welded, so that the column base welding fixture can flexibly adapt to column base plates 11 and U-shaped sleeves 12 of different specifications, thereby improving the versatility and applicability of the fixture; at the same time, the fixture no longer needs to use multiple fixtures to adapt to column bases 10 of different specifications, which reduces the complexity of the fixture, reduces the waste of manpower and material costs, and improves production efficiency and economic benefits; and the fixture can be quickly and accurately positioned, thereby improving welding efficiency and quality.

[0051] like Figure 7 As shown, the construction process of a column base welding fixture provided by this embodiment is described in detail below:

[0052] First, select a second positioning assembly 50 that matches the specifications of the column base plate 11 of the column foot 10, detachably mount the second positioning assembly 50 on the fixture base 20, and fix the column base plate 11 through the second positioning assembly 50;

[0053] Secondly, select a first positioning assembly 40 that matches the specifications of the U-shaped sleeve 12 of the column foot 10, detachably install the first positioning assembly 40 on the fixture backing plate 30, and fix the U-shaped sleeve 12 through the first positioning assembly 40;

[0054] Finally, after confirming that the column foot 10 is fixed on the welding fixture device, the welding operation is performed.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A column foot welding fixture, the column foot (10) comprising a column bottom plate (11) and a U-shaped sleeve (12), characterized in that: The column foot welding fixture comprises: A fixture base (20); A clamp backing plate (30), wherein the clamp backing plate (30) is arranged on the clamp base (20); a first positioning assembly (40), the first positioning assembly (40) comprising a first positioning plate (43) and a first positioning pin (44), the first positioning plate (43) being detachably disposed on the fixture support plate (30), the first positioning pin (44) being disposed on a side of the first positioning plate (43) facing the U-shaped sleeve (12), the first positioning pin (44) being configured to fix the U-shaped sleeve (12); A second positioning assembly (50), the second positioning assembly (50) is detachably disposed on the clamp base (20), and the second positioning assembly (50) is configured to fix the column base plate (11).

2. The column foot welding fixture according to claim 1, characterized in that: The second positioning assembly (50) includes a second positioning plate (51) and a second positioning pin (52). The second positioning plate (51) is detachably arranged on the clamp base (20). A first positioning hole (53) is opened on the second positioning plate (51). The second positioning pin (52) is inserted into the first positioning hole (53). The second positioning pin (52) is configured to fix the column base plate (11).

3. The column foot welding fixture according to claim 2, characterized in that: The clamp base (20) is provided with a first positioning groove (21), and the second positioning plate (51) is embedded in the first positioning groove (21).

4. The column foot welding fixture according to claim 2, characterized in that: The second positioning assembly (50) further comprises a first hanging ring (55), wherein the first hanging ring (55) is arranged on a side of the second positioning plate (51) facing away from the clamp base (20).

5. The column foot welding fixture according to claim 1, characterized in that: The first positioning assembly (40) further comprises a movable plate (41), wherein the movable plate (41) is arranged on the clamp support plate (30) in a direction moving toward or away from the clamp base (20), and the first positioning plate (43) is detachably arranged on a side of the movable plate (41) facing the U-shaped sleeve (12).

6. The column foot welding fixture according to claim 5, characterized in that: The first positioning assembly (40) also includes a positioning rod (46), which is arranged on the side of the movable plate (41) facing the clamp support plate (30), and the clamp support plate (30) is provided with a plurality of second positioning holes (31) in a direction approaching or away from the clamp base (20), and the positioning rod (46) can be inserted into the second positioning hole (31).

7. The column foot welding fixture according to claim 5, characterized in that: The movable plate (41) is provided with a second positioning groove (42), and the first positioning plate (43) can be embedded in the second positioning groove (42).

8. The column foot welding fixture according to claim 5, characterized in that: The first positioning assembly (40) further comprises a clamping portion (45), wherein the clamping portion (45) is arranged on the movable plate (41), and an output end of the clamping portion (45) can be moved close to or away from the first positioning plate (43) to clamp or release the U-shaped sleeve (12).

9. The column foot welding fixture according to claim 8, characterized in that: The clamping portion (45) comprises a fixed seat (451), a push arm (452) and a limiting arm (453); the fixed seat (451) is arranged on the movable plate (41); the first end of the push arm (452) is hinged to the fixed seat (451) so that the second end of the push arm (452) can be close to or away from the first positioning plate (43); the limiting arm (453) is hinged to the fixed seat (451); the limiting arm (453) can limit the push arm (452) so that the second end of the push arm (452) keeps a tendency to approach the first positioning plate (43).

10. A welding tool, comprising a welding base, characterized in that: The welding tool also includes a column foot welding tool fixture as described in any one of claims 1 to 9, and the fixture base (20) is arranged on the welding base.

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