A cast steel housing crack repair device

Abstract

The utility model discloses a cast steel shell crack repairing device, including work table, the one side of work table is provided with manipulator, is provided with the welding gun on manipulator, is provided with the mounting panel through the removal component on work table, is provided with the lifting assembly through the adjusting component on mounting panel, work table still is provided with fixed establishment. The utility model effectively solved the thermal deformation problem when the thin -walled curved surface area is repaired, and removal component adopts X / Y axis cooperation movement structure, can real -time follow the lifting position adjustment of welding gun track, ensure that the lifting assembly is always accurate and is under the area of crack in the repair process, and the elastic cooperation of adjusting component is through the guide telescopic link and spring, combines second ball rotation structure, makes arc -shaped support plate can adapt to shell curved surface shape and keep constant adhesion, avoids the " inward recess " or " warping " deformation caused by the insufficient support.

Description

Technical Field

[0001] This utility model relates to the field of cast steel shell crack repair technology, specifically a cast steel shell crack repair device. Background Technology

[0002] Cast steel shells are shell structures made of cast steel and formed through a casting process. They possess high strength, high temperature resistance, and corrosion resistance, and are widely used in machinery, automotive, aerospace, and other fields. Cracks are prone to occur during the production process, mainly due to the large temperature gradient during the casting cooling stage leading to concentrated shrinkage stress; or due to improper process design (such as an unreasonable gating system), material defects (such as inclusions), improper heat treatment, etc., ultimately causing local stress to exceed the material's strength limit.

[0003] However, to ensure subsequent performance, the cracked defects need to be repaired. Common repair methods include cold welding, electrical discharge welding, laser ablation, and arc welding. However, hot welding methods such as arc welding have significant drawbacks: during the repair of thin-walled curved areas of cast steel shells, the local welding temperature can reach 800-1200℃. Because the curved area has no bottom support, the thermal expansion and contraction effect will cause "inward concavity" or "warping" deformation on both sides of the crack, with deformation reaching 0.5-2mm, directly affecting product quality. Utility Model Content

[0004] The purpose of this invention is to provide a device for repairing cracks in cast steel shells, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cast steel shell crack repair device, including a workbench, a robotic arm is provided on one side of the workbench, a welding gun is provided on the robotic arm, an installation plate is provided on the workbench via a moving component, a lifting component is provided on the installation plate via an adjusting component, and a fixing mechanism is also provided on the workbench.

[0006] Preferably, in order to facilitate the movement of the lifting component, it moves along with the welding gun to lift the repair area. The moving component includes an X-axis moving device set on the worktable, a moving plate set on the X-axis moving device, and the moving plate is fixedly connected to the mounting plate through a Y-axis moving device.

[0007] Preferably, in order to support the repaired area and prevent deformation, the support assembly includes a support plate mounted on the mounting plate, with an arc-shaped component at the top of the support plate.

[0008] Preferably, in order to ensure that it always fits snugly against the cast steel shell and ensures the lifting effect, the adjustment component includes a guide telescopic rod disposed between the support plate and the mounting plate, a spring sleeved on the outside of the guide telescopic rod, a second rotating ball disposed at the top of the guide telescopic rod, and a rotating cavity matching the second rotating ball opened at the bottom of the support plate.

[0009] Preferably, in order to facilitate clamping and fixing the two sides of the cast steel shell and facilitate subsequent repair operations, the fixing mechanism includes a base set on the workbench, an electric push rod set on the base, a lifting plate set at the output end of the electric push rod, and a fixing component set under the lifting plate and on the base through a rotating component.

[0010] Preferably, in order to better fit the side and ensure the clamping and fixing effect, the rotating component includes connecting columns set under the lifting plate and on the base, and the two connecting columns in the same vertical direction are each provided with a first rotating ball at the end that is close to each other.

[0011] Preferably, in order to clamp and fix the two sides of the cast steel shell to facilitate subsequent repair operations, the fixing component includes a clamping plate set between two connecting columns in the same vertical direction. The end faces of the clamping plates that are close to each other are provided with anti-slip pads, and the end faces of the clamping plates that are far from each other are provided with a rotating cavity that matches the first rotating ball.

[0012] Compared with the prior art, the beneficial effects of this utility model are: (1) Effectively solves the problem of thermal deformation during the repair of thin-walled curved areas. The moving component adopts an X / Y axis coordinated motion structure, which can follow the welding gun trajectory in real time to adjust the lifting position, ensuring that the lifting component always acts accurately on the area below the crack during the repair process. The adjusting component, through the elastic cooperation of the guide telescopic rod and the spring, combined with the second rotating ball structure, enables the arc-shaped support plate to adapt to the curved shape of the shell and maintain a constant fitting force, avoiding "inward concavity" or "warping" deformation due to insufficient support. (2) The fixing mechanism adopts a combination design of rotatable clamping plate and anti-slip pad. The first rotating ball realizes the adaptive fit between the clamping surface and the edge of the shell. While ensuring stable clamping, it avoids local stress concentration. The components work together to achieve precise positioning and dynamic support in the repair process. It also reduces the risk of secondary damage through non-rigid contact, significantly improving the crack repair quality and product qualification rate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a cast steel shell crack repair device proposed in this utility model; Figure 2 This is a partial structural diagram of the moving component and the mounting plate in a cast steel shell crack repair device proposed in this utility model; Figure 3This is a schematic diagram of the structure of the mounting plate in the cast steel shell crack repair device proposed in this utility model; Figure 4 This is a schematic diagram of the fixing mechanism in a cast steel shell crack repair device proposed in this utility model.

[0014] In the diagram: 11. Workbench; 12. Robotic arm; 13. Welding gun; 21. X-axis moving device; 22. Moving plate; 23. Y-axis moving device; 24. Mounting plate; 31. Base; 32. Electric push rod; 33. Lifting plate; 34. Connecting column; 35. First rotating ball; 36. Clamping plate; 37. Anti-slip mat; 41. Support plate; 42. Guide telescopic rod; 43. Spring; 44. Arc-shaped component; 45. Second rotating ball. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-4 This utility model provides an embodiment of a cast steel shell crack repair device, including a worktable 11. The worktable 11 can repair cracks in the cast steel shell. A robotic arm 12 is provided on one side of the worktable 11, and a welding gun 13 is provided on the robotic arm 12. The figure shows a partial illustration of the welding device. Arc welding can be used to repair cracks, which is a relatively mature technology and will not be described in detail here. In order to facilitate clamping and positioning of the cast steel shell and facilitate subsequent repair operations, a fixing mechanism is also provided on the worktable 11. The fixing mechanism includes a base 31 set on the worktable 11, an electric push rod 32 set on the base 31, a lifting plate 33 set at the output end of the electric push rod 32, and a fixing component is set under the lifting plate 33 and on the base 31 through a rotating component. The rotating assembly includes connecting columns 34 disposed under the lifting plate 33 and on the base 31. Two connecting columns 34 in the same vertical direction are each provided with a first rotating ball 35 at their close ends. The fixing assembly includes a clamping plate 36 disposed between two connecting columns 34 in the same vertical direction. Anti-slip pads 37 are provided on the close ends of the clamping plates 36. Rotating cavities matching the first rotating balls 35 are opened on the far ends of the clamping plates 36. The first rotating balls 35 rotate within the rotating cavities. Without the application of external force, the first rotating balls 35 do not rotate. The clamping plates 36, in conjunction with the first rotating balls 35, can easily clamp the edge of the cast steel shell by rotating and fitting against the edge, ensuring the clamping effect. The fixing mechanism can have two or four sets, as long as the clamping effect is guaranteed.

[0017] Please see Figures 1-4 To ensure that the bottom of the cast steel shell at the repair site is supported as the welding gun 13 moves during crack repair, preventing inward concavity or warping of the crack sides due to thermal expansion and contraction, which would affect product quality, a mounting plate 24 is installed on the worktable 11 via a moving assembly. A support assembly is mounted on the mounting plate 24 via an adjusting assembly. The moving assembly includes an X-axis moving device 21 mounted on the worktable 11, with a moving plate 22 mounted on it. The moving plate 22 is fixedly connected to the mounting plate 24 via a Y-axis moving device 23. The X-axis moving device 21 can be moved using a linear guide rail and a slider, while the Y-axis moving device 23 can be moved using a reciprocating screw or other methods to achieve movement in both the X and Y axes. This allows the support assembly to move with the repair process, supporting the area below the repair site. The support assembly includes components mounted on the worktable 11. The mounting plate 24 has a support plate 41 with an arc-shaped part 44 at its top. The outer surface of the arc-shaped part 44 is covered with a rubber pad to ensure a close fit and lifting effect. The adjustment assembly includes a guide telescopic rod 42 between the support plate 41 and the mounting plate 24. A spring 43 is sleeved on the outside of the guide telescopic rod 42. The guide telescopic rod 42 and the spring 43 cooperate to ensure that the arc-shaped part 44 on the support plate 41 is always in close contact with the bottom of the cast steel shell, ensuring the lifting effect. A second rotating ball 45 is provided at the top of the guide telescopic rod 42. The bottom end of the support plate 41 has a rotating cavity that matches the second rotating ball 45. Without the application of external force, the second rotating ball 45 does not rotate and can rotate to fit the shape of the cast steel shell, ensuring the lifting effect.

[0018] Working Principle: In use, the cast steel shell to be repaired is placed on the workbench 11, with the bottom of both sides resting on the clamping plates 36 on the base 31. The electric push rod 32 extends, moving the lifting plate 33 downwards, bringing the clamping plates 36 closer together. Combined with the first rotating ball 35 and the rotating cavity, the anti-slip pads 37 on the end faces of the clamping plates 36 adhere to the cast steel shell. Further extension ensures a clamping effect, securing the cast steel shell. Then, pressing the arc-shaped piece 44 causes the guide telescopic rod 42 and spring 43 to contract and store potential energy. Finally, the X-axis moving device 21 operates, moving... As the moving plate 22 moves, the arc-shaped part 44 on the support plate 41 can be moved to below the bottom of the cast steel shell. Then, during the repair process, the X-axis moving device 21 works in conjunction with the Y-axis moving device 23, moving with the robot arm 12. When repairing with the welding gun 13, it moves the support plate 41 and the arc-shaped part 44, always supporting the bottom of the repair area. The potential energy of the compressive force of the guide telescopic rod 42 and the spring 43 ensures that the arc-shaped part 44 on the support plate 41 is always in contact with the cast steel shell. In conjunction with the second rotating ball 45 and the rotating cavity, the contact effect is guaranteed, thus ensuring the lifting effect.

[0019] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for repairing cracks in a cast steel shell, comprising a workbench (11), characterized in that: A robotic arm (12) is provided on one side of the workbench (11), a welding gun (13) is provided on the robotic arm (12), a mounting plate (24) is provided on the workbench (11) via a moving component, a lifting component is provided on the mounting plate (24) via an adjusting component, and a fixing mechanism is also provided on the workbench (11).

2. The cast steel shell crack repair device according to claim 1, characterized in that: The moving component includes an X-axis moving device (21) mounted on a worktable (11), a moving plate (22) mounted on the X-axis moving device (21), and the moving plate (22) is fixedly connected to the mounting plate (24) via a Y-axis moving device (23).

3. The cast steel shell crack repair device according to claim 2, characterized in that: The lifting assembly includes a support plate (41) disposed on the mounting plate (24), and an arc-shaped component (44) is disposed at the top of the support plate (41).

4. The cast steel shell crack repair device according to claim 3, characterized in that: The adjustment assembly includes a guide telescopic rod (42) disposed between the tray (41) and the mounting plate (24), a spring (43) sleeved on the outside of the guide telescopic rod (42), a second rotating ball (45) disposed on the top of the guide telescopic rod (42), and a rotating cavity matching the second rotating ball (45) opened at the bottom of the tray (41).

5. The cast steel shell crack repair device according to claim 4, characterized in that: The fixing mechanism includes a base (31) set on the workbench (11), an electric push rod (32) set on the base (31), a lifting plate (33) set at the output end of the electric push rod (32), and a fixing component set under the lifting plate (33) and on the base (31) through a rotating component.

6. The cast steel shell crack repair device according to claim 5, characterized in that: The rotating assembly includes connecting columns (34) disposed under the lifting plate (33) and on the base (31), and a first rotating ball (35) is provided at one end of each of the two connecting columns (34) in the same vertical direction that are close to each other.

7. The cast steel shell crack repair device according to claim 6, characterized in that: The fixing component includes a clamping plate (36) between two connecting columns (34) in the same vertical direction. The end faces of the clamping plates (36) that are close to each other are provided with anti-slip pads (37), and the end faces of the clamping plates (36) that are far from each other are provided with a rotating cavity that matches the first rotating ball (35).

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