A jig for fixing a ceramic stopper at a weld end
By using ceramic stopper clamps to fix the weld ends, the problem of molten pool flow during welding was solved, resulting in good weld formation and cost savings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XCMG EXCAVATOR MACHINERY CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-08-04
AI Technical Summary
When welding the fillet weld of the main counterweight seat and tail beam bevel of the turntable of a 38-ton hydraulic excavator, the molten pool tends to flow from both ends of the weld, affecting the appearance and quality of the weld. Furthermore, manual repair welding and grinding are required, increasing costs.
A ceramic stopper is used to fix the ceramic stopper at both ends of the bevel fillet weld, forming a closed weld. The ceramic stopper is fixed by the clamping arm assembly and the pushing component to prevent the molten pool from flowing.
This effectively prevents the molten pool from flowing outwards from both ends of the weld, ensuring weld formation, improving appearance quality, and saving labor costs.
Smart Images
Figure CN224587165U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a clamp for fixing ceramic stop blocks at the end of welds, belonging to the field of welding technology. Background Technology
[0002] When welding the fillet weld of the counterweight seat and tail beam of the turntable of a 38-ton hydraulic excavator at the robotic welding station of our No. 3 Structure Plant, due to the thickness of the plate and the depth of the bevel, the number of weld layers and passes is relatively large. Under the existing technical conditions, the molten pool is prone to flow down from both ends of the weld during the welding process, which affects the appearance and welding quality of the weld, and also increases the subsequent manual processing costs.
[0003] Currently, the main welding method used in production is layered staggered welding to prevent the molten pool from flowing down. However, while layered staggered welding can effectively prevent the molten pool from flowing down during the welding process, it cannot complete the final weld. After robotic welding, manual repair welding and grinding are still required, resulting in high labor costs. Summary of the Invention
[0004] To address the shortcomings of existing technologies, this utility model provides a fixture for fixing ceramic blocks at the ends of welds. Before welding, two ceramic blocks are fixed at the beginning and end of the bevel fillet weld using the fixture to form a closed weld before welding. This effectively prevents the molten pool from flowing outward from both ends of the weld, ensuring weld formation and saving labor costs.
[0005] This utility model is achieved according to the following technical solution: A clamp for fixing a ceramic stop block at the end of a weld includes: The clamping arm assembly includes a first clamping arm and a second clamping arm, which are hinged together in a scissor shape. The pushing component is installed between the front ends of the first clamping arm and the front ends of the second clamping arm, with the tail ends of the first clamping arm and the tail ends of the second clamping arm located at the two ends of the bevel fillet weld of the workpiece, respectively. The support plate is fixed to the tail end of the first and second clamping arms respectively. The support plate is used to fix the ceramic block. The pushing component is configured to apply a pushing force to the front end of the first and second clamping arms, thereby clamping the support plate at the tail end of the first and second clamping arms inward to fix the ceramic block at the beginning and end of the bevel fillet weld, forming a closed weld before welding.
[0006] In some embodiments, both the first clamping arm and the second clamping arm include a support plate for use in conjunction with the pushing component and a bent plate connected to the support plate and the support plate; after a portion of the bent plate of the first clamping arm and the bent plate of the second clamping arm overlap, they are connected together by a hinge component.
[0007] In some embodiments, the bending plate is divided into: The first mounting part located above the workpiece has a longitudinally arranged "I"-shaped structure and is used to fix the support plate. The second mounting part, located above the workpiece, has an overall "C" structure, and a hinge hole is provided at the corner of the second mounting part; The third mounting part, located above the workpiece, is a horizontally arranged "I"-shaped structure that extends to the side of the workpiece. The fourth mounting part, located on the side of the workpiece, has an overall "|" structure; The fifth mounting part, located on the side of the workpiece, has an overall "C" structure and is used to fix the tray. The first mounting part, the second mounting part, the third mounting part, the fourth mounting part, and the fifth mounting part are connected in sequence.
[0008] In some embodiments, the hinge component includes a bolt and a nut; the bolt passes through the overlapping portion of the first and second clamping arms from bottom to top, and the bolt is tightened by screwing on the nut.
[0009] In some embodiments, the pushing component is an externally threaded rod, with a threaded hole provided on one of the support plates. The externally threaded rod is screwed into the threaded hole, forming a helical pair between the two. The top end of the externally threaded rod abuts against another support plate, causing the externally threaded rod to rotate and push the two support plates to expand outward, thereby achieving the inward clamping of the two support plates.
[0010] In some embodiments, a through hole is provided on the support plate, and a nut coaxial with the through hole is welded to the inner side of the through hole, the through hole and the nut together forming the threaded hole.
[0011] In some embodiments, a coaxial circular tube is welded to the inner side of the threaded hole, and there is a clearance fit between the external threaded rod and the circular tube. The circular tube protects the threaded working part of the external threaded rod.
[0012] In some embodiments, the externally threaded rod is a wing bolt that can be turned manually without the aid of a wrench.
[0013] In some embodiments, the tray is a semi-enclosed structure that limits the ceramic block placed therein in multiple directions. The multiple directions of limiting include at least limiting the ceramic block to move vertically downward, laterally outward, and longitudinally outward.
[0014] In some embodiments, the pallet is formed by a vertical plate and flanges on the bottom and outer sides of the vertical plate, and the vertical plate is fixedly connected to the tail end of the clamping arm assembly.
[0015] The beneficial effects of this utility model are: The application of this utility model can effectively avoid poor forming at both ends of the weld when welding the bevel fillet weld of the main body of the turntable. It is simple to operate and easy to use, and can effectively improve the appearance quality of the weld and save labor costs. Attached Figure Description
[0016] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.
[0017] In the attached diagram: Figure 1 This is a schematic diagram illustrating the application of a ceramic stopper for fixing a weld end according to the present invention. Figure 1 ; Figure 2 This is a schematic diagram illustrating the application of a ceramic stopper for fixing a weld end according to the present invention. Figure 2 ; Figure 3 This is a schematic diagram illustrating the application of a ceramic stopper for fixing a weld end according to the present invention. Figure 3 ; Figure 4 This is an exploded view of a clamp for fixing a ceramic stop block at the end of a weld, according to the present invention. Figure 1 ; Figure 5 This is an exploded view of a clamp for fixing a ceramic stop block at the end of a weld, according to the present invention. Figure 2 .
[0018] Attached diagram labels: 1-clamping arm assembly, 2-support plate, 3-round tube, 4-wing bolt, 5-bolt, 6-nut, 7-workpiece, 1a-first clamping arm, 1b-second clamping arm, 11-support plate, 12-bending plate, 121-first mounting part, 122-second mounting part, 123-third mounting part, 124-fourth mounting part, 125-fifth mounting part, 21-vertical plate, 22-flanged edge.
[0019] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] like Figure 1 , Figure 2 , Figure 3 As shown, a fixture for fixing ceramic blocks at the end of a weld includes a clamping arm assembly 1, a pushing component, and a support plate 2. The clamping arm assembly 1 includes a first clamping arm 1a and a second clamping arm 1b, which are hinged together in a scissor-like shape. The pushing component is installed between the front ends of the first clamping arm 1a and the second clamping arm 1b, and the tail ends of the first clamping arm 1a and the second clamping arm 1b are respectively located at both ends of the bevel fillet weld of the workpiece 7. The support plate 2 is fixed to the tail ends of the first and second clamping arms 1a and 1b, and is used to fix the ceramic blocks. The pushing component is configured to apply a pushing force to the front ends of the first and second clamping arms 1a and 1b, thereby clamping the support plate 2 at the tail ends of the first and second clamping arms 1a and 1b inward to fix the ceramic blocks at the beginning and end of the bevel fillet weld, forming a closed weld before welding, thereby effectively preventing the molten pool from flowing outward from both ends of the weld, ensuring weld formation, and saving labor costs.
[0024] The specific structures of the first and second clamping arms described above will be further explained below.
[0025] like Figure 4 , Figure 5As shown, both the first clamping arm 1a and the second clamping arm 1b include a support plate 11 for use with the jacking component and a bent plate 12 connected to the support plate 11 and the support plate 2; after the bent plates of the first clamping arm 1a and the second clamping arm 1b overlap to some extent, they are connected together by a hinge component.
[0026] Preferred solutions, such as Figure 4 , Figure 5 As shown, the bending plate 12 is divided into a first mounting part 121, a second mounting part 122, and a third mounting part 123 located above the workpiece 7, and a fourth mounting part 124 and a fifth mounting part 125 located on the side of the workpiece 7. The first mounting part 121 is generally arranged in a longitudinal "I" shape and is used to fix the support plate 11. The second mounting part 122 is generally arranged in a "C" shape and has a hinge hole at the corner. The third mounting part 123 is generally arranged in a transverse "I" shape and extends to the side of the workpiece 7. The fourth mounting part 124 is generally arranged in a "|" shape. The fifth mounting part 125 is generally arranged in a "C" shape and is used to fix the support plate 2. The first mounting part 121, the second mounting part 122, the third mounting part 123, the fourth mounting part 124, and the fifth mounting part 125 are connected in sequence.
[0027] It should be noted that the above is only a preferred embodiment of the bent plate. In actual design, it is not limited to the above structure and can also be designed as a bent plate of other shapes.
[0028] The following provides a further explanation of the specific structure of the aforementioned hinge component.
[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the hinge component includes a bolt 5 and a nut 6; the bolt 5 is inserted from bottom to top at the overlapping part of the first and second clamping arms 1a and 1b, and the bolt 5 is tightened by tightening the nut 6.
[0030] It should be noted that the above is only a preferred embodiment of the hinge component. In actual design, it is not limited to the above structure and can also be designed as a hinge component in the form of a pin and a cotter pin.
[0031] The following provides a further explanation of the specific structure of the aforementioned jacking component.
[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the pushing component is an external threaded rod. One of the support plates has a threaded hole, and the external threaded rod is screwed into the threaded hole, forming a helical pair between the two. The top of the external threaded rod abuts against another support plate, causing the external threaded rod to rotate and push the two support plates 11 to expand outward, thereby achieving the inward clamping of the two support plates 2.
[0033] Further options, such as Figure 4 , Figure 5 As shown, a through hole is provided on the support plate 11, and a nut coaxial with it is welded to the inner side of the through hole. The through hole and the nut together form a threaded hole.
[0034] Further options, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a coaxial round tube 3 is welded to the inner side of the threaded hole. The external threaded rod and the round tube 3 are clearance-fitted, and the round tube 3 protects the threaded working part of the external threaded rod.
[0035] It should be noted that in actual design, the round tube and nut can also be made as one piece, with internal threads inside.
[0036] Further options, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the external threaded rod uses a wing bolt 4 that can be rotated manually without the aid of a wrench.
[0037] The following provides a further explanation of the specific structure of the aforementioned pallet.
[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the tray 2 is a semi-enclosed structure that limits the ceramic block placed inside in multiple directions. The multiple directions of limiting include at least limiting the ceramic block to move vertically downward, horizontally outward, and longitudinally outward.
[0039] Further options, such as Figure 4 , Figure 5 As shown, the support plate 2 is formed by a vertical plate 21 and flanges 22 on the bottom and outer sides of the vertical plate 21. The vertical plate 21 is fixedly connected to the tail end of the clamping arm assembly 1.
[0040] It should be noted that the above is only a preferred embodiment of the pallet. In actual design, it is not limited to the above structure and can also be designed as a pallet of other shapes.
[0041] In summary, this utility model provides a clamp for fixing ceramic stops at the end of welds, achieving the following functions and effects: The first and second clamping arms 1a and 1b are connected by bolts 5 and nuts 6 to form a scissor shape. The ends of the first and second clamping arms 1a and 1b are provided with support plates 2 to fix the ceramic blocks and prevent the fixture from falling off when the workpiece 7 is flipped. Tighten the wing bolts 4 at the front end of the first and second clamping arms 1a and 1b, and the support plates 2 clamp inward to fix the ceramic blocks at both ends of the weld. The wing bolts 4 are provided with round tubes 3 to protect the threaded working part and prevent splash damage. The fixture provided by this utility model can effectively avoid poor forming at both ends of the weld when welding the bevel fillet weld of the main body of the turntable. It is simple to operate and easy to use, which can effectively improve the appearance quality of the weld and save labor costs.
[0042] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0043] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.
[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A clamp for fixing a ceramic stop block at the end of a weld, characterized in that, include: The clamping arm assembly includes a first clamping arm and a second clamping arm, which are hinged together in a scissor shape. The pushing component is installed between the front ends of the first clamping arm and the front ends of the second clamping arm, with the tail ends of the first clamping arm and the tail ends of the second clamping arm located at the two ends of the bevel fillet weld of the workpiece, respectively. The support plate is fixed to the tail end of the first and second clamping arms respectively. The support plate is used to fix the ceramic block. The pushing component is configured to apply a pushing force to the front end of the first and second clamping arms, thereby clamping the support plate at the tail end of the first and second clamping arms inward to fix the ceramic block at the beginning and end of the bevel fillet weld, forming a closed weld before welding.
2. The clamp for fixing ceramic stop blocks at the weld end according to claim 1, characterized in that: Both the first clamping arm and the second clamping arm include a support plate for use in conjunction with the pushing component and a bent plate connected to the support plate and the support plate; After a portion of the bending plate of the first clamping arm and the bending plate of the second clamping arm overlap, they are connected together by a hinge component.
3. The jig for fixing the ceramic stopper to the end of the weld bead according to claim 2, wherein The bending plate is divided into: The first mounting part located above the workpiece has a longitudinally arranged "I"-shaped structure and is used to fix the support plate. The second mounting part, located above the workpiece, has an overall "C" structure, and a hinge hole is provided at the corner of the second mounting part; The third mounting part, located above the workpiece, has a horizontally arranged "I"-shaped structure and extends to the side of the workpiece. The fourth mounting part, located on the side of the workpiece, has an overall "|" structure; The fifth mounting part, located on the side of the workpiece, has an overall "C" structure and is used to fix the tray. The first mounting part, the second mounting part, the third mounting part, the fourth mounting part, and the fifth mounting part are connected in sequence.
4. A clamp for fixing a ceramic stop block at the end of a weld as described in claim 2, characterized in that: The hinge component includes a bolt and a nut; the bolt passes through the overlapping part of the first and second clamping arms from bottom to top, and the bolt is tightened by tightening the nut.
5. A clamp for fixing a ceramic stop block at the end of a weld as described in claim 2, characterized in that: The pushing component is an externally threaded rod. One of the support plates has a threaded hole, and the externally threaded rod is screwed into the threaded hole, forming a helical pair between them. The top end of the externally threaded rod abuts against another support plate, causing the externally threaded rod to rotate and push the two support plates to expand outward, thereby achieving the inward clamping of the two support plates.
6. A clamp for fixing a ceramic stop block at the end of a weld according to claim 5, characterized in that: A through hole is provided on the support plate, and a nut coaxial with it is welded to the inner side of the through hole. The through hole and the nut together form the threaded hole.
7. A clamp for fixing a ceramic stop block at the end of a weld as described in claim 5, characterized in that: A coaxial round tube is welded to the inner side of the threaded hole, and there is a clearance fit between the external threaded rod and the round tube. The round tube protects the threaded working part of the external threaded rod.
8. A clamp for fixing a ceramic stop block at the end of a weld according to claim 5, characterized in that: The external threaded rod uses a wing bolt that can be turned manually without the aid of a wrench.
9. A clamp for fixing a ceramic stop block at the end of a weld according to claim 1, characterized in that: The tray has a semi-enclosed structure, which limits the ceramic block placed inside in multiple directions. The multiple directions of limiting include at least limiting the ceramic block to move vertically downward, horizontally outward, and longitudinally outward.
10. The fixture for fixing the ceramic stopper at the end of the weld bead according to claim 9, characterized in that: The pallet is formed by a vertical plate and flanges on the bottom and outer sides of the vertical plate. The vertical plate is fixedly connected to the tail end of the clamping arm assembly.