Welding seam surplus height smoothing auxiliary tool

Abstract

The invention discloses a weld reinforcement grinding auxiliary tool which is used for assisting a grinding machine in grinding a weld of a welding base material. Comprising a movable adjusting platform and a stabilizing mechanism; the grinding machine is mounted on the movable adjusting platform; the movable adjusting platform is used for moving and adjusting the grinding machine, so that the bottom of a grinding piece of the grinding machine is parallel to the outer tangent line of the weld joint. The stabilizing mechanism is connected with the movable adjusting platform and the welding base metal, and the movable adjusting platform is kept on the surface of the welding base metal through the stabilizing mechanism so that the movable adjusting platform can move along the surface of the welding base metal. The angle of the grinding piece of the grinding machine is adjusted through the movable adjusting platform, movable grinding is achieved, the grinding machine is kept stable through the stabilizing mechanism, and therefore the grinding precision and the flat and smooth effect of the grinding face are guaranteed, welding base metal is not prone to being damaged, and follow-up nondestructive testing and anti-corrosion work of welding seams are facilitated; and operation is easy, time and labor are saved, the requirement for operating skills of operators is lowered, and the grinding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to an auxiliary tooling for grinding weld excess height flat. Background Art

[0002] In the welding process, weld reinforcement is a common phenomenon in the welding process. The welding process is stacked up little by little by the welding rod. After the welding is completed, the height of the weld will exceed the surface of the parent material. However, the weld reinforcement has an important influence on the performance and appearance of the welded structure. Welding quality is the most important part of the entire project, and the control of weld reinforcement is one of the important links in ensuring welding quality. In actual projects, welding quality is also the most difficult to control. In the case of manual welding, weld reinforcement exceeding the range is a common phenomenon, and in most cases it will exceed the specified value by several times. High weld reinforcement will lead to stress concentration, which will have a serious impact on the anti-corrosion work of the weld, and will also have a serious impact on the non-destructive testing of the weld, especially on pipeline welds, where the prominent problem is particularly obvious.

[0003] Grinding of welds is allowed in the welding process, and in engineering applications, it is often done manually using a handheld angle grinder. During the grinding process, the worker must hold the handle firmly with one hand and the tail of the grinder with the other hand to grind the weld excess height. This requires high grinding skills from the grinder, and the worker must maintain a stable posture for a long time during the process, which is also a great test of human strength. This operation method is not only labor-intensive, but also difficult to ensure grinding efficiency and accuracy. In the actual construction process, it is found that many welds are not ground evenly, the transition is not smooth, and the grinding process damages the parent material, which makes it difficult to meet engineering needs.

[0004] In addition, during the non-destructive testing of welds, the weld residual height has a great impact on the detection. Under the guidance of the current national green environmental protection policy, the traditional gamma-ray detection method has been greatly reduced in use due to the strict storage and transportation requirements of the radiation source and the generation of radiation source waste. With the maturity of phased array non-destructive testing technology in recent years, phased array detection technology has gradually replaced other radiation detection methods and become the main detection method in non-destructive testing. The biggest difficulty of phased array technology lies in the grinding of welds, and good grinding is one of the necessary conditions for accurate phased array detection. In the energy industry standard NB / T 47013.15-2021 Part 15: Phased Array Ultrasonic Testing, the detection technology levels are divided into A, B, and C levels, and the requirements from A to C are becoming more and more stringent. For the detection of welded joints in the manufacturing and installation stage, Class B should be adopted; for welded joints of important equipment, Class C can be adopted. In both Class B and Class C requirements, the residual height of the welded joint needs to be smoothed, and the phased acoustic beam should be fully covered at least twice during the detection. Under normal operation, the encoder needs to scan twice in the circumferential direction and also needs to scan horizontally. The biggest problem in actual operation is that the weld residual height is not ground flat, which makes it impossible to use the phased array probe for accurate non-destructive scanning, making it difficult to ensure the quality of inspection in most cases. However, the currently commonly used manual direct grinding method has a high failure rate and low efficiency, which is difficult to meet the energy industry standards and the requirements of array non-destructive testing technology.

[0005] Therefore, it is particularly important to design a tooling that can effectively assist the grinder in efficiently grinding the weld excess height, with a smooth grinding effect and not easy to damage the base material. Summary of the invention

[0006] The purpose of the present invention is to provide a weld excess height grinding auxiliary tooling to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A weld excess height grinding auxiliary tooling is used to assist a grinder in grinding the weld of a welding parent material; it comprises a movable adjustment platform and a stabilizing mechanism; the grinder is installed on the movable adjustment platform; the movable adjustment platform is used to move and adjust the grinder so that the bottom of the grinding plate of the grinder is parallel to the external tangent line of the weld; the stabilizing mechanism is connected to the movable adjustment platform and the welding parent material, and the movable adjustment platform is maintained on the surface of the welding parent material by the stabilizing mechanism, so that the movable adjustment platform moves along the surface of the welding parent material.

[0008] Furthermore, the movable adjustment platform includes a supporting mechanism and an installation mechanism for installing a grinder; the supporting mechanism includes a base and a lifting assembly arranged on the base; a first roller is arranged at the bottom of the base, a second roller is arranged at the bottom of the installation mechanism, and one side of the installation mechanism is connected to the lifting assembly.

[0009] Furthermore, the lifting assembly includes a support frame and an adjusting screw, wherein the adjusting screw is arranged on the support frame and can rotate relative to the support frame; a threaded hole is arranged on the mounting mechanism, and the adjusting screw is threadedly engaged with the threaded hole.

[0010] Furthermore, the support frame is provided with a guide groove, and the mounting mechanism is provided with a guide member, and the guide member is slidably connected in the guide groove.

[0011] Furthermore, the base includes a first wheel bridge and a second wheel bridge, and the first rollers are distributed at the bottom of the first wheel bridge and the bottom of the second wheel bridge; the support frame is fixedly connected to the first wheel bridge and the second wheel bridge.

[0012] Furthermore, the first roller is configured as a universal wheel.

[0013] Furthermore, a folding mechanism is also provided on the mounting mechanism, the second roller is provided at one end of the folding mechanism, and the other end of the folding mechanism is connected to the mounting mechanism.

[0014] Furthermore, the stabilizing mechanism includes a connecting assembly, a chain and a roller assembly; the connecting assembly is fixedly connected to the movable adjustment platform; the chain is arranged around the welding parent material, and the two ends of the chain are respectively connected to the connecting assembly; the roller assembly is installed on the inner side of the chain so that the stabilizing mechanism can rotate along the surface of the welding parent material.

[0015] Furthermore, the connecting assembly includes a fixed part, a rotating part and an elastic part; the fixed part is fixedly connected to the movable adjustment platform; one end of the rotating part is rotatably connected to the fixed part, and the other end is connected to the movable adjustment platform through the elastic part.

[0016] Furthermore, the fixed member and the rotating member are respectively provided with a draw hook, and the two ends of the chain are respectively hung on the hooks of the fixed member and the rotating member.

[0017] The beneficial effects of the present invention are as follows: the present invention adjusts the angle of the grinding disc of the grinder and realizes mobile grinding through a mobile adjustment platform, and keeps the grinder stable through a stabilizing mechanism, thereby ensuring the grinding accuracy and the smoothness of the grinding surface, and is not easy to damage the welding parent material, which is beneficial to the subsequent non-destructive testing and anti-corrosion work of the weld; and the operation is simple, time-saving and labor-saving, which reduces the operating skill requirements for the operator and improves the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a side view of the present invention.

[0020] Figure 2 It is a cross-sectional view of the present invention.

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 4 It is a side view of the movable adjustment platform and the grinder of the present invention.

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the mobile adjustment platform and the grinder of the present invention.

[0024] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0027] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0030] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0031] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0032] like Figures 1 to 5 As shown, an auxiliary tooling for grinding the excess height of a weld 21 is used to assist a grinder 1 in grinding the weld 21 of a welding base material 2; it includes a movable adjustment platform 3 and a stabilizing mechanism 4; the grinder 1 is installed on the movable adjustment platform 3; the movable adjustment platform 3 is used to move and adjust the grinder 1 so that the bottom of the grinding plate 11 of the grinder 1 is parallel to the tangent line of the weld 21; the stabilizing mechanism 4 is connected to the movable adjustment platform 3 and the welding base material 2, and the movable adjustment platform 3 is maintained on the surface of the welding base material 2 through the stabilizing mechanism 4, so that the movable adjustment platform 3 moves along the surface of the welding base material 2.

[0033] As an example, the auxiliary tooling for grinding the excess height of the weld 21 of this embodiment includes a movable adjustment platform 3 and a stabilizing mechanism 4. The grinder 1 is installed on the movable adjustment platform 3, and the movable adjustment platform 3 is used to move and adjust the grinder 1: on the one hand, by adjusting the movable adjustment platform 3, the bottom of the grinding wheel grinding plate 11 of the grinder 1 is made parallel to the external tangent line of the weld 21, and the size of the contact surface between the grinding wheel grinding plate 11 and the weld 21 is adjusted, thereby ensuring the grinding accuracy; on the other hand, by moving the grinder 1 through the movable adjustment platform 3, the mobile grinding of the weld 21 is realized, ensuring the operational stability during the grinding process, thereby improving the grinding efficiency. At the same time, in order to ensure the grinding accuracy, especially the accuracy during the mobile grinding process, the stabilizing mechanism 4 is connected and fastened with the mobile adjustment platform 3 and the welding base material 2, and the mobile adjustment platform 3 is maintained on the surface of the welding base material 2 by the stabilizing mechanism 4, so that the mobile adjustment platform 3 moves along the surface of the welding base material 2 to prevent loosening or detachment, so that the angle, distance and contact surface between the grinding disc 11 and the weld 21 of the grinder 1 can be kept stable during the grinding and moving process, thereby ensuring the grinding accuracy. The advantages of the auxiliary tooling for grinding the excess height of the weld 21 of this embodiment are: the angle of the grinding disc 11 of the grinder 1 is adjusted by the mobile adjustment platform 3 and the mobile grinding is realized, and the grinder 1 is kept stable by the stabilizing mechanism 4, thereby ensuring the grinding accuracy and the smoothness of the grinding surface, not easily damaging the welding base material 2, and facilitating the subsequent non-destructive testing and anti-corrosion work of the weld 21; and the operation is simple, time-saving and labor-saving, reducing the operating skill requirements for the operator and improving the grinding efficiency.

[0034] In one embodiment, the movable adjustment platform 3 includes a supporting mechanism 31 and an installation mechanism 32 for installing the grinder 1; the supporting mechanism 31 includes a base 311 and a lifting assembly 312 arranged on the base 311; a first roller 313 is arranged at the bottom of the base 311, and a second roller 321 is arranged at the bottom of the installation mechanism 32, and one side of the installation mechanism 32 is connected to the lifting assembly 312.

[0035] As an example, see Figures 1 to 5The mobile adjustment platform 3 of this embodiment includes a support mechanism 31 and a mounting mechanism 32 for mounting the grinder 1. The support mechanism 31 includes a base 311 and a lifting assembly 312 arranged on the base 311. A first roller 313 is arranged at the bottom of the base 311, and a second roller 321 is arranged at one side of the bottom of the mounting mechanism 32. The first roller 313 and the second roller 321 provide support for the mobile adjustment platform 3 and achieve a moving effect. At the same time, in order to adjust the angle of the grinding sheet 11 of the grinder 1, the side of the mounting mechanism 32 opposite to the second roller 321 is connected to the lifting assembly 312. The side of the grinder 1 used for grinding is located on the outside of the second roller 321. The height of one side of the mounting mechanism 32 is adjusted by the lifting assembly 312. The second roller 321, as the fulcrum of the grinder 1, also rolls along the surface of the base material 2, and cooperates with the adjustment of the position of the first roller 313 to change the angle between the grinding sheet 11 and the weld 21. Specifically, since three points can determine the circumferential radius of an arc surface or a section of an arc, the three points A (first roller), B (second roller) and C (grinding point of the grinding sheet 11) are used to determine the circumferential radius of grinding; among them, point A and point B are in direct contact with the surface of the base material, and their accuracy can be guaranteed (accuracy is less than 0.1mm); and point C (grinding point of the grinding sheet 11) determines the grinding depth of the grinder, and excessive grinding will not occur. By adjusting point A (first roller) and cooperating with the lifting component 312 to adjust point C (grinding point of the grinding sheet 11), the circumferential radius after grinding can be adjusted, so that the roundness of the pipeline ring weld excess height after grinding is ≤0.3mm, and the flatness is ≤0.3mm.

[0036] In one embodiment, the lifting assembly 312 includes a support frame 3121 and an adjusting screw 3122. The adjusting screw 3122 is disposed on the support frame 3121 and can rotate relative to the support frame 3121. A threaded hole is disposed on the mounting mechanism 32, and the adjusting screw 3122 is threadedly engaged with the threaded hole.

[0037] As an example, see Figures 2 to 5 The specific structure of the lifting assembly 312 of this embodiment includes a support frame 3121 and an adjusting screw 3122. The adjusting screw 3122 is arranged on the support frame 3121 and can rotate relative to the support frame 3121. The mounting mechanism 32 is provided with a threaded hole, and the adjusting screw 3122 is screwed with the threaded hole. By rotating the adjusting screw 3122, the height of the mounting mechanism 32 can be adjusted, thereby adjusting the angle of the grinding sheet 11.

[0038] In one embodiment, the support frame 3121 is provided with a guide groove, and the mounting mechanism 32 is provided with a guide member 322 , which is slidably connected in the guide groove.

[0039] As an example, see Figure 4 and Figure 5In order to further improve the stability and accuracy of the adjustment, the support frame 3121 of this embodiment is provided with a guide groove, and a guide member 322 is provided on the mounting mechanism 32. The guide member 322 is slidably connected in the guide groove to ensure that the mounting mechanism 32 can maintain a stable moving trajectory during the lifting process.

[0040] In one embodiment, the base 311 includes a first wheel bridge 3111 and a second wheel bridge 3112 , and the first rollers 313 are distributed at the bottom of the first wheel bridge 3111 and the bottom of the second wheel bridge 3112 ; the support frame 3121 is fixedly connected to the first wheel bridge 3111 and the second wheel bridge 3112 .

[0041] As an example, see Figure 5 The specific structure of the base 311 of this embodiment includes a first wheel bridge 3111 and a second wheel bridge 3112, the first roller 313 is distributed at the bottom of the first wheel bridge 3111 and the bottom of the second wheel bridge 3112, and the support frame 3121 is fixedly connected to the first wheel bridge 3111 and the second wheel bridge 3112; the support mechanism 31 is supported on the surface of the parent material 2 by the first wheel bridge 3111 and the second wheel bridge 3112 and is erected on both sides of the weld 21, and the stability and load-bearing capacity of the base 311 are improved by the support frame 3121, so that the grinder 1 can grind the weld 21 conveniently, and at the same time avoid the first roller 313 pressing on the weld 21 to affect the stability of the angle of the grinding sheet 11.

[0042] In one embodiment, the first roller 313 is configured as a universal wheel.

[0043] As an example, see Figures 1 to 5 In order to facilitate the movement of the movable adjustment platform 3, the first roller 313 of this embodiment is set as a universal wheel, which can conveniently adjust the moving direction of the movable adjustment platform 3 according to the direction of the weld 21.

[0044] In one embodiment, a folding mechanism 323 is further disposed on the mounting mechanism 32 , the second roller 321 is disposed at one end of the folding mechanism 323 , and the other end of the folding mechanism 323 is connected to the mounting mechanism 32 .

[0045] As an example, see Figure 2 and Figure 4 In order to facilitate the installation and disassembly of the grinding sheet 11 on the grinder, a folding mechanism 323 is further provided on the installation mechanism 32 of this embodiment. The second roller 321 is arranged at one end of the folding mechanism 323, and the other end of the folding mechanism 323 is connected to the installation mechanism 32. The second roller 321 can be conveniently folded or lowered through the folding mechanism 323, providing an operating space for disassembling the grinding sheet 11.

[0046] In one embodiment, the stabilizing mechanism 4 includes a connecting component 41, a chain 42 and a roller component 43; the connecting component 41 is fixedly connected to the movable adjustment platform 3; the chain 42 is arranged around the welding base material 2, and the two ends of the chain 42 are respectively connected to the connecting component 41; the roller component 43 is installed on the inner side of the chain 42 so that the stabilizing mechanism 4 can rotate along the surface of the welding base material 2.

[0047] As an example, see Figures 1 to 3 The specific structure of the stabilizing mechanism 4 of this embodiment includes a connecting assembly 41, a chain 42 and a roller assembly 43. The connecting assembly 41 is fixedly connected to the movable adjustment platform 3, the chain 42 is arranged around the welding parent material 2, and the two ends of the chain 42 are respectively connected to the connecting assembly 41, so that the stabilizing mechanism 4 can bind the movable adjustment platform 3 to the welding parent material 2. The roller assembly 43 is installed on the inner side of the chain 42 so that the stabilizing mechanism 4 can rotate along the surface of the welding parent material 2; for the annular weld 21 on the welding parent material 2 in the shape of a circle, a cylinder, or a round tube, by setting the first roller 313, the second roller 321 and the roller assembly 43, the stabilizing mechanism 4 and the movable adjustment platform 3 can be rotated to make the grinder 1 move around the surface of the welding parent material 2, grind the annular weld 21, and ensure that the grinder 1 can remain stable during the movement.

[0048] In one embodiment, the connecting assembly 41 includes a fixing member 411, a rotating member 412 and an elastic member 413; the fixing member 411 is fixedly connected to the movable adjustment platform 3; one end of the rotating member 412 is rotatably connected to the fixing member 411, and the other end is connected to the movable adjustment platform 3 through the elastic member 413.

[0049] As an example, see Figure 2 In order to reduce the vibration of the grinder 1 during the grinding process, the specific structure of the connecting assembly 41 of this embodiment includes a fixed member 411, a rotating member 412 and an elastic member 413. The fixed member 411 is fixedly connected to the movable adjustment platform 3, one end of the rotating member 412 is rotatably connected to the fixed member 411, and the other end is connected to the movable adjustment platform 3 through the elastic member 413. The setting of the elastic member 413 can provide a certain buffer and adaptability space for the chain 42 when subjected to external force, and change the hard connection of the chain 42 into soft contact, so as to buffer the vibration of the grinder 1 during the grinding process, avoid damage to the equipment, and further improve the stability and applicability of the tooling.

[0050] In one embodiment, a hook 414 is provided on the fixed member 411 and the rotating member 412 , respectively, and two ends of the chain 42 are fastened to the hooks of the fixed member 411 and the rotating member 412 , respectively.

[0051] As an example, see Figure 2In this embodiment, the fixing member 411 and the rotating member 412 are respectively provided with hooks 414 for hooking the chain 42. The two ends of the chain 42 are respectively hung on the hooks of the fixing member 411 and the rotating member 412, so that the chain 42 and the connecting assembly 41 can be connected and fixed. This connection method can facilitate the connection and removal of the chain 42. In addition, after the chain 42 is removed, the original chain 42 can be extended by the external chain 42 according to the different diameters of the welding parent material 2 to adapt to the different sizes of the parent material 2, thereby improving the applicability.

[0052] Regarding the embodiments of the present invention, it should also be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other to obtain new embodiments.

[0053] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. The protection scope of the present invention shall be subject to the protection scope of the claims. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A weld seam excess height grinding auxiliary tool, used to assist a grinder (1) in grinding a weld seam (21) of a welding parent material (2); characterized in that: The invention comprises a movable adjustment platform (3) and a stabilizing mechanism (4); the grinder (1) is mounted on the movable adjustment platform (3); the movable adjustment platform (3) is used to move and adjust the grinder (1) so that the bottom of the grinding plate of the grinder (1) is parallel to the external tangent line of the weld (21); the stabilizing mechanism (4) is connected to the movable adjustment platform (3) and the welding parent material (2), and the movable adjustment platform (3) is maintained on the surface of the welding parent material (2) by the stabilizing mechanism (4), so that the movable adjustment platform (3) moves along the surface of the welding parent material (2).

2. The weld excess height grinding auxiliary tooling according to claim 1 is characterized in that: The movable adjustment platform (3) comprises a supporting mechanism (31) and a mounting mechanism (32) for mounting the grinder (1); the supporting mechanism (31) comprises a base (311) and a lifting assembly (312) arranged on the base (311); a first roller (313) is arranged at the bottom of the base (311), a second roller (321) is arranged at the bottom of the mounting mechanism (32), and one side of the mounting mechanism (32) is connected to the lifting assembly (312).

3. The weld excess height grinding auxiliary tooling according to claim 2 is characterized in that: The lifting assembly (312) comprises a support frame (3121) and an adjusting screw (3122), wherein the adjusting screw (3122) is arranged on the support frame (3121) and can rotate relative to the support frame (3121); a threaded hole is arranged on the mounting mechanism (32), and the adjusting screw (3122) is threadedly engaged with the threaded hole.

4. The weld excess height grinding auxiliary tooling according to claim 3 is characterized in that: The support frame (3121) is provided with a guide groove, and the mounting mechanism (32) is provided with a guide member (322), and the guide member (322) is slidably connected in the guide groove.

5. The weld excess height grinding auxiliary tooling according to claim 2 is characterized in that: The base (311) comprises a first wheel bridge (3111) and a second wheel bridge (3112); the first roller (313) is distributed at the bottom of the first wheel bridge (3111) and the bottom of the second wheel bridge (3112); the support frame (3121) is fixedly connected to the first wheel bridge (3111) and the second wheel bridge (3112).

6. The weld excess height grinding auxiliary tooling according to claim 2 is characterized in that: The first roller (313) is configured as a universal wheel.

7. The weld excess height grinding auxiliary tooling according to claim 2 is characterized in that: The mounting mechanism (32) is also provided with a folding mechanism (323); the second roller (321) is provided at one end of the folding mechanism (323); and the other end of the folding mechanism (323) is connected to the mounting mechanism (32).

8. The weld excess height grinding auxiliary tool according to claim 2, characterized in that: The stabilizing mechanism (4) comprises a connecting component (41), a chain (42) and a roller component (43); the connecting component (41) is fixedly connected to the movable adjustment platform (3); the chain (42) is arranged around the welding parent material (2), and the two ends of the chain (42) are respectively connected to the connecting component (41); the roller component (43) is installed on the inner side of the chain (42) so that the stabilizing mechanism (4) can rotate along the surface of the welding parent material (2).

9. The weld excess height grinding auxiliary tool according to claim 8, characterized in that: The connecting assembly (41) comprises a fixing member (411), a rotating member (412) and an elastic member (413); the fixing member (411) is fixedly connected to the movable adjustment platform (3); one end of the rotating member (412) is rotatably connected to the fixing member (411), and the other end is connected to the movable adjustment platform (3) via the elastic member (413).

10. The weld excess height grinding auxiliary tooling according to claim 9, characterized in that: The fixing member (411) and the rotating member (412) are respectively provided with a draw hook (414), and the two ends of the chain (42) are respectively hung on the hooks of the fixing member (411) and the rotating member (412).

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