Welding repair workbench
By designing the support, fixing sleeve, and positioning mechanism of the welding repair workbench, the problems of unstable fixation and thermal deformation during the welding process of the guide vane were solved, achieving high-quality welding and cost reduction, and ensuring the safe operation of the unit.
Patent Information
- Application Number
- CN202422850249.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing welding repair methods are difficult to effectively fix the guide vanes, resulting in unstable welding quality, high costs and wasted labor, and severe thermal deformation of the guide vanes, which affects the safe operation of the unit.
Design a welding repair workbench, including a support, a fixing sleeve and a positioning mechanism, to achieve stable clamping and positioning of the workpiece through threaded connection and spring sheet structure, so as to avoid shaking and thermal deformation during the welding process.
It improved welding quality, reduced costs, decreased labor requirements, ensured the stability and precision of the guide vanes during the welding process, and enhanced the safe and reliable operation of the unit.
Smart Images
Figure CN223531745U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of workbenches, and in particular to a welding repair workbench. Background Technology
[0002] The power system is an indispensable source of energy for people's lives and production in modern society. Hydropower is an important component of my country's power engineering. However, many rivers in my country are high in sediment and carry large amounts of sediment. The erosion and damage of sediment to the flow-through components of hydropower stations seriously affects the safe operation of hydropower station units. Therefore, the quality of the return-to-factory repair of flow-through components has become a very important logistical guarantee for the continuous safe operation of hydropower stations.
[0003] The repair of flow-through components mainly involves welding. Due to factors such as high heat input during welding, the components are prone to deformation. According to the design requirements, the flow-through components of hydropower stations have high requirements for the fit clearance at each position. In particular, the coaxiality of the movable guide vanes is crucial during the installation and operation of the unit. Therefore, effectively controlling the deformation of the guide vanes during the welding process is an important link to ensure the welding quality of the guide vanes and subsequent installation.
[0004] In the welding repair process, compared to individual components such as the top cover, bottom ring, and impeller, the guide vanes are small and numerous. Effective fixation during welding is an important means to reduce guide vane deformation. Currently, there are two commonly used fixation methods for guide vane welding. The first method is to use a machined bushing for fixation. Specifically, a bushing 1-2mm larger than the guide vane journal is machined, welded and fixed to the worktable, and finally the guide vane is inserted into the bushing for fixation. The second method is to place the guide vane flat on the ground.
[0005] Using pre-machined bushings for fixing offers several advantages during construction. First, it provides a secure hold, allowing for full-circumference welding of the bushing to prevent guide vanes from detaching during platform welding. Second, it increases costs. Different units require different guide vane sizes and upper / lower journal dimensions, necessitating custom-made bushings to address these variations, increasing project costs. Third, it wastes labor. Simultaneous welding of guide vanes of different sizes on-site requires frequent cutting, removal, welding, and replacement of corresponding bushings, increasing workload.
[0006] The method of fixing the guide vane by placing it flat on the ground has the advantages of convenience and speed. However, it has two main disadvantages: First, the quality of welding repairs is poor. Because the guide vane is placed flat on the ground, thermal deformation of the structural components during welding can lead to deviations in the welding position. Additionally, dust from the ground caused by the arc can contaminate the welding area, resulting in weld defects such as undercut, incomplete penetration, and slag inclusions, thus affecting the overall welding quality. Second, the guide vane itself suffers wear and damage. The welding repair process causes thermal deformation of the guide vane, and the flat surface causes friction and wear. After welding repairs, the worn areas of the guide vane need to be repaired, which is extremely labor-intensive.
[0007] To ensure effective and convenient fixation of the guide vane during welding repair, the current fixation method needs to be further optimized. Utility Model Content
[0008] In view of the problems existing in the current welding repair workbench, this utility model is proposed.
[0009] Therefore, the purpose of this utility model is to provide a welding repair workbench.
[0010] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a welding repair workbench, comprising: a support part; a fixed sleeve mounted on the support part; and a positioning mechanism mounted on the fixed sleeve for positioning a workpiece inserted into the fixed sleeve.
[0011] In a preferred embodiment of the welding repair workbench of this utility model, the support part is a flat plate structure, and one side of the support part is a support plane; the fixing sleeve is installed on the support plane.
[0012] In a preferred embodiment of the welding repair workbench of this utility model, the fixing sleeve is a tubular structure, and the positioning mechanism is installed on the radial sidewall of the fixing sleeve; the positioning mechanism can extend through the radial sidewall of the fixing sleeve to the inner side of the fixing sleeve.
[0013] In a preferred embodiment of the welding repair workbench of this utility model, the radial sidewall of the fixed sleeve is provided with a threaded hole, and the positioning mechanism is provided with an external thread; the positioning mechanism can be connected to the threaded hole through the external thread.
[0014] In a preferred embodiment of the welding repair workbench of this utility model, the threaded hole penetrates the radial sidewall of the fixed sleeve, and the positioning mechanism can extend through the threaded hole to the inner side of the fixed sleeve.
[0015] In a preferred embodiment of the welding repair workbench of this utility model, the radial inner wall of the fixed sleeve is provided with a placement groove, the position of the placement groove corresponds to the position of the threaded hole; a spring is installed inside the placement groove.
[0016] In a preferred embodiment of the welding repair workbench of this utility model, one end of the spring is fixed to the inner side of the mounting groove; when the positioning mechanism extends to the inner side of the fixing sleeve, it can push the spring to deform.
[0017] In a preferred embodiment of the welding repair workbench of this utility model, at least two positioning mechanisms are installed on the fixed sleeve; the positioning mechanisms are circumferentially located on the fixed sleeve.
[0018] In a preferred embodiment of the welding repair workbench of this utility model, one axial end of the fixed sleeve is connected to the support portion, and the other axial end of the fixed sleeve is provided with an opening that can accommodate the workpiece to enter.
[0019] In a preferred embodiment of the welding repair workbench of this utility model, the end of the spring piece near the opening is fixedly connected to the inside of the mounting groove, and there is a gap between the end of the spring piece away from the opening and the inner wall of the mounting groove.
[0020] The beneficial effects of this utility model are as follows: When positioning a workpiece, the positioning mechanism is rotated, and under the action of the thread, the end of the positioning mechanism extends into the inside of the fixed sleeve. Therefore, the positioning mechanism can clamp and position the workpiece inside the fixed sleeve. Attached Figure Description
[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:
[0022] Figure 1 This is a schematic diagram of the overall structure of the welding repair workbench of this utility model.
[0023] Figure 2 This is a schematic diagram of the fixing sleeve and positioning mechanism described in this utility model.
[0024] Figure 3 This is a schematic diagram of the welding repair workbench and movable guide vane structure described in this utility model.
[0025] Figure 4 This is a schematic diagram of the fixing sleeve and blade shaft structure described in this utility model. Detailed Implementation
[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0029] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0030] Example 1
[0031] Reference Figure 1 A welding repair workbench is provided, including a support portion 100; a fixing sleeve 200 mounted on the support portion 100; and a positioning mechanism 300 mounted on the fixing sleeve 200 for positioning a workpiece inserted into the fixing sleeve 200. The support portion 100 provides a support position for the workpiece. The fixing sleeve 200 can be mounted on the support portion 100 by welding or other means. When the workpiece needs to be processed, it can be inserted into the inside of the fixing sleeve 200 for positioning, thus facilitating processing of the workpiece on the support portion 100.
[0032] Specifically, the support part 100 is a flat plate structure, and one side of the support part 100 is a support plane 101; the fixing sleeve 200 is installed on the support plane 101. In this embodiment, the support plane 101 is the top surface of the support part 100. The workpiece can be positioned above the support part 100 for processing by means of the fixing sleeve 200.
[0033] Furthermore, the fixing sleeve 200 has a tubular structure, and the positioning mechanism 300 is installed on the radial sidewall of the fixing sleeve 200; the positioning mechanism 300 can extend through the radial sidewall of the fixing sleeve 200 to the inner side of the fixing sleeve 200.
[0034] When positioning the workpiece, the workpiece is inserted into the fixed sleeve 200. After insertion, the workpiece is clamped in the fixed sleeve 200 by extending the end of the positioning mechanism 300 into the fixed sleeve 200, thus completing the workpiece positioning.
[0035] Furthermore, the radial sidewall of the fixed sleeve 200 is provided with a threaded hole 201, and the positioning mechanism 300 is provided with an external thread. The positioning mechanism 300 can be connected to the threaded hole 201 through the external thread. The threaded hole 201 penetrates the radial sidewall of the fixed sleeve 200, and the positioning mechanism 300 can extend through the threaded hole 201 to the inside of the fixed sleeve 200. When positioning the workpiece, rotating the positioning mechanism 300 causes its end to extend into the interior of the fixed sleeve 200 under the action of the thread. Therefore, the positioning mechanism 300 can clamp and position the workpiece inside the fixed sleeve 200.
[0036] Example 2
[0037] Reference Figure 2 This embodiment differs from the first embodiment in that: a mounting groove 202 is provided on the radial inner wall of the fixing sleeve 200, and the position of the mounting groove 202 corresponds to the position of the threaded hole 201; a spring piece 400 is installed inside the mounting groove 202. One end of the spring piece 400 is fixed to the inner side of the mounting groove 202; when the positioning mechanism 300 extends into the inner side of the fixing sleeve 200, it can push the spring piece 400 to deform.
[0038] Therefore, when the workpiece is inserted into the fixed sleeve 200, it enters through the threaded hole 201 via the positioning mechanism 300, which can push the spring 400 to deform. The spring 400 replaces the positioning mechanism 300 to make contact with the workpiece, thereby increasing the force-bearing area of the workpiece and preventing the positioning mechanism 300 from causing dents on the surface of the workpiece.
[0039] Specifically, at least two positioning mechanisms 300 are installed on the fixed sleeve 200; the positioning mechanisms 300 are arranged in a circle on the fixed sleeve 200.
[0040] By arranging multiple positioning mechanisms 300, the multiple positioning mechanisms 300 can clamp the workpiece from different directions, thereby improving the stability of the positioned workpiece.
[0041] Furthermore, one axial end of the fixed sleeve 200 is connected to the support part 100, and the other axial end of the fixed sleeve 200 is provided with an opening 203 that can accommodate the workpiece to enter. When the workpiece is inserted, it enters the inside of the fixed sleeve 200 through the opening 203.
[0042] The rest of the structure is the same as in Example 1.
[0043] Example 3
[0044] Reference Figure 3 and Figure 4 The difference between this embodiment and the previous embodiment is that the end of the spring piece 400 near the opening 203 is fixedly connected to the inside of the mounting groove 202, and there is a gap between the end of the spring piece 400 away from the opening 203 and the inner wall of the mounting groove 202.
[0045] This embodiment also discloses a movable guide vane, which is positioned using the aforementioned welding repair workbench; it includes a blade shaft 500, the end of which can enter the interior of the fixed sleeve 200; and blades 600, which are mounted on the outside of the blade shaft 500.
[0046] When welding is performed on the movable guide, one end of the blade shaft 500 enters the interior of the fixed sleeve 200, and the positioning mechanism 300 can push the spring 400 to clamp and position the blade shaft 500. Furthermore, a groove 501 is provided on the outer side of the blade shaft 500. When the spring 400 is pressed towards the blade shaft 500 by the positioning mechanism 300, the end of the spring 400 can enter the inner side of the groove 501, thereby improving the limiting effect on the blade shaft 500 and preventing the blade shaft 500 from rotating inside the fixed sleeve 200.
[0047] When the spring 400 enters the groove 501, the end of the spring 400 away from the opening 203 enters the groove 501, and the end of the spring 400 away from the opening 203 can restrict the groove 501 from the groove wall of the opening 203, so that the spring 400 can further limit the blade shaft 500.
[0048] The above solution achieves the following results:
[0049] To ensure the quality of welding, the positioning mechanism 300 holds the blade shaft 500 in place, preventing the blade shaft 500 from shaking during the welding process. This improves the stability of the welding process, ensures the quality of the guide vane welding, reduces manufacturing costs, and decreases the cost of producing fixed sleeves 200 of different sizes.
[0050] The rest of the structure is the same as in Example 2.
[0051] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0052] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0053] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.
[0054] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A welding repair workbench, characterized in that: include, Support section (100); A fixing sleeve (200) is mounted on the support (100); A positioning mechanism (300) is mounted on the fixed sleeve (200) for positioning a workpiece inserted into the fixed sleeve (200).
2. The welding repair workbench as described in claim 1, characterized in that: The support part (100) is a flat plate structure, and one side of the support part (100) is a support plane (101); The fixing sleeve (200) is installed on the support plane (101).
3. The welding repair workbench as described in claim 2, characterized in that: The fixing sleeve (200) is a tubular structure, and the positioning mechanism (300) is installed on the radial sidewall of the fixing sleeve (200); The positioning mechanism (300) can extend through the radial sidewall of the fixed sleeve (200) to the inside of the fixed sleeve (200).
4. The welding repair workbench as described in claim 3, characterized in that: The fixed sleeve (200) has a threaded hole (201) on its radial sidewall, and the positioning mechanism (300) has an external thread. The positioning mechanism (300) can be connected to the threaded hole (201) via an external thread.
5. The welding repair workbench as described in claim 4, characterized in that: The threaded hole (201) penetrates the radial sidewall of the fixed sleeve (200), and the positioning mechanism (300) can extend through the threaded hole (201) to the inside of the fixed sleeve (200).
6. The welding repair workbench as described in claim 3, 4, or 5, characterized in that: The fixing sleeve (200) has a mounting groove (202) on its radial inner wall, and the position of the mounting groove (202) corresponds to the position of the threaded hole (201); The mounting slot (202) is equipped with a spring clip (400).
7. The welding repair workbench as described in claim 6, characterized in that: One end of the spring clip (400) is fixed to the inside of the mounting groove (202); When the positioning mechanism (300) extends into the inside of the fixed sleeve (200), it can push the spring (400) to deform.
8. The welding repair workbench as described in claim 7, characterized in that: The number of positioning mechanisms (300) installed on the fixed sleeve (200) is at least two; The positioning mechanism (300) is circumferentially located on the fixed sleeve (200).
9. The welding repair workbench as described in claim 8, characterized in that: One axial end of the fixed sleeve (200) is connected to the support part (100), and the other axial end of the fixed sleeve (200) is provided with an opening (203) that can accommodate the workpiece to enter.
10. The welding repair workbench as described in claim 9, characterized in that: The end of the spring piece (400) near the opening (203) is fixedly connected to the inside of the mounting groove (202), and there is a gap between the end of the spring piece (400) away from the opening (203) and the inner wall of the mounting groove.