Converter valve power module replacement tool

Abstract

The invention relates to the technical field of power system overhaul and maintenance, and discloses a converter valve power module replacement tool which comprises a valve tower and a tool aluminum profile frame, a power module body is fixedly connected to the upper portion of the valve tower, and frame fixing hanging plates are fixedly connected to the front and back of one side of the tool aluminum profile frame. Frame lifting lug hanging plates are installed on the front portion and the rear portion of the center of the tool aluminum profile frame correspondingly, pull rod locking mechanisms are fixedly connected to the outer sides of the frame fixing hanging plates and the outer sides of the frame lifting lug hanging plates correspondingly, and the tool aluminum profile frame is installed on a valve tower through the frame fixing hanging plates and the frame lifting lug hanging plates. A hydraulic jacking mechanism is installed in a frame on one side of the tool aluminum profile frame. The tool is reliably locked from the upper portion of the power module, an operator does not need to enter a high-risk area, namely the bottom of a valve tower, for installation and fixation, the risk that the operator is pinched or hit by a falling object at a high position is thoroughly eliminated technically, and personal safety is greatly guaranteed.

Description

Technical Field

[0001] This invention relates to the field of power system maintenance technology, specifically a tooling for replacing converter valve power modules. Background Technology

[0002] The power module replacement device for the flexible DC converter valve tower, currently in use and serving as a core piece of equipment for maintenance and repair, while meeting basic module replacement requirements, has gradually revealed several technical defects and potential safety hazards that urgently need to be addressed during long-term operation. From a structural design perspective, the device frequently experiences uneven stress distribution in the supporting structure during construction. This uneven stress distribution leads to significant plastic deformation and bending in critical load-bearing components.

[0003] This structural deformation not only significantly reduces the positioning accuracy of the equipment, causing positional deviations when power modules are docked, but in severe cases, it can even lead to quality defects such as improper installation or loose connections of power modules. From an ergonomic perspective, the operation process design of this device has obvious shortcomings, lacking scientific human-machine interaction considerations. It often requires 3-4 operators to perform complex collaborative work simultaneously. This cumbersome operation mode not only increases labor costs but also reduces overall work efficiency. Especially when performing high-difficulty operations such as replacing the bottom module of the flexible straight valve tower, due to the complex structure of the space at the bottom of the equipment and the extremely limited working space, coupled with the insufficient range of motion and flexibility of the existing robotic arm, operators often need to perform repeated position adjustments and posture corrections. This makes the average time for a single module replacement operation long, seriously restricting the overall progress and efficiency of maintenance work. These prominent technical bottlenecks and operational inconveniences need to be fundamentally solved through a comprehensive upgrade and transformation of the existing equipment or the development of new intelligent replacement devices.

[0004] The installation process for replacing power modules in a flexible DC-DC converter valve is quite complex, presenting numerous inconveniences in actual operation. Given current technical conditions and on-site equipment configuration, personnel must be positioned directly beneath the power module during replacement. This is particularly true when replacing the first layer of power modules in the flexible DC-DC converter valve. Due to space constraints and structural characteristics, components such as supporting inclined insulators must be removed first to create space for subsequent operations. This requires driving a lifting vehicle into the area beneath the valve tower for work, but the currently available lifting vehicles have limitations, preventing them from easily accessing the narrow space below the platform, which significantly complicates the actual work.

[0005] Meanwhile, during the installation of the power module, the existing tooling's positioning and fixing mechanisms are not precise or convenient enough, requiring operators to spend a significant amount of time on repeated debugging and calibration to ensure the power module is accurately installed. This not only increases the workload of operators but also makes it easy for human factors to cause installation errors, thereby affecting the operational stability and safety of the entire flexible DC converter valve. Furthermore, the current operating procedures lack effective information feedback and monitoring mechanisms, making it difficult for operators to obtain key parameters and status information in a timely manner during installation, and hindering real-time assessment and adjustment of installation quality. This further exacerbates the difficulty and risk of personnel operation.

[0006] The core load-bearing component of the flexible DC converter valve module replacement fixture adopts a double-channel steel design, specifically consisting of two identical channel steels with a cross-sectional dimension of 100 mm width and 8.5 mm thickness. According to current installation specifications, after positioning and installation, these two parallel channel steels form a cantilever beam-type load-bearing structure with a length of approximately 1.7 meters. Due to the inherent large moment concentration effect of the cantilever beam structure, coupled with the relatively small cross-sectional dimensions of the selected channel steel, the overall bending stiffness of this load-bearing structure is significantly insufficient. Under actual operating conditions, when subjected to the rated load, this structure will exhibit significant elastic deformation. This deformation not only affects operational accuracy but also poses a safety hazard. The current temporary measure taken on site is to use the metal fence surrounding the lifting platform as an auxiliary support point. However, this solution has several problems: First, the lifting platform fence is not a professional load-bearing component, and its load-bearing capacity has not been professionally calculated and tested. Second, the fence is not rigidly fixed to the main frame of the lifting platform using bolts, which will cause significant displacement and swaying under stress. Third, there is a positional deviation of about 50 mm between the fence support point and the actual stress point of the channel steel, making it impossible to form an effective force transmission path. Based on comprehensive structural mechanics analysis and on-site measurement data, the current temporary solution relying on the lifting platform fence for auxiliary support poses multiple safety risks, including structural instability and connection failure, in long-term use. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a power module replacement fixture for converter valves, which solves the core problems of low operational safety and structural reliability. The above technical solution improves the fundamental safety and operational efficiency of power module replacement operations.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a power module replacement fixture for a converter valve, comprising a valve tower and a fixture aluminum profile frame. A power module body is fixedly connected to the upper part of the valve tower. A frame fixing plate is fixedly connected to both the front and rear sides of one side of the fixture aluminum profile frame. A frame lifting lug plate is installed at the center of the fixture aluminum profile frame at both the front and rear sides. A pull rod locking mechanism is fixedly connected to the outer sides of both the frame fixing plate and the frame lifting lug plate. The fixture aluminum profile frame is mounted on the valve tower via the frame fixing plate and the frame lifting lug plate. A hydraulic lifting mechanism is installed inside one side of the fixture aluminum profile frame. A lifting aluminum profile frame is fixedly connected to the upper part of the hydraulic lifting mechanism. Roller support seats are evenly distributed on both the front and rear sides of the other side of the lifting aluminum profile frame and the fixture aluminum profile frame. External unpowered rollers are installed inside the roller support seats on the upper part of the fixture aluminum profile frame, and lifting unpowered rollers are installed inside the roller support seats on the upper part of the lifting aluminum profile frame.

[0009] Preferably, the pull rod locking mechanism includes a stainless steel screw, one end of which is fixedly connected to a handwheel, and one end and one side of which are externally threaded to a pull rod assembly. The pull rod assembly includes a pull rod seat and a locking nut. The two pull rod seats are respectively fixedly connected to one side of the frame fixing plate and the frame lifting lug plate. The frame fixing plate is fixedly connected to the front and rear sides of the tooling aluminum profile frame, and the frame lifting lug plate is slidably connected to the outside of the tooling aluminum profile frame through the pull rod seats. The hydraulic lifting mechanism includes a lifting hydraulic cylinder. A cylinder support plate is fixedly connected to the output end of the lifting hydraulic cylinder. A lifting support rod is rotatably connected to one side of the cylinder support plate. Multiple lifting support rods are provided, and two lifting support plates are rotatably connected to the two ends of each lifting support rod. A sliding assembly is installed on the end of the lifting support plate closest to the lifting hydraulic cylinder. The sliding assembly ensures smooth and stable lifting of the aluminum profile frame by the hydraulic lifting mechanism. The lifting hydraulic cylinder is fixedly connected to the tooling aluminum profile frame via a hydraulic cylinder support seat, ensuring the stability of the lifting hydraulic cylinder during operation.

[0010] Preferably, the sliding assembly includes a lifting roller, which is rotatably connected to the inside of the lifting support plate near the lifting hydraulic cylinder. Lifting sliding channel steel is fixedly connected to the bottom side of the tooling aluminum profile frame and the bottom of the lifting aluminum profile frame. The lifting roller is slidably connected inside the lifting sliding channel steel.

[0011] Preferably, the ends of the two lifting support plates away from the lifting hydraulic cylinder are respectively fixedly connected to lifting support seats. The two lifting support seats are respectively fixedly connected to the bottom side of the tooling aluminum profile frame and the bottom of the lifting aluminum profile frame, further ensuring the stability of the lifting aluminum profile frame during lifting and lowering.

[0012] Preferably, the aluminum profile frame of the tooling is fixedly connected to the front and rear sides of the side away from the hydraulic jacking mechanism with frame end lifting lugs. The upper interior of the frame end lifting lugs and the frame lifting lugs are provided with round holes to realize eccentric lifting of the replacement tooling.

[0013] Preferably, both ends of the bottom of the tooling aluminum profile frame are fixedly connected to rubber wheels via fixing seats.

[0014] Preferably, a control box is installed on the side of the tooling aluminum profile frame away from the hydraulic jacking mechanism, and the control box is electrically connected to the jacking hydraulic cylinder.

[0015] Preferably, a counterweight is fixedly connected to the bottom of the tooling aluminum profile frame on the side near the control box, and a large-capacity battery is installed on the upper part of the counterweight, which continuously supplies power to the lifting hydraulic cylinder.

[0016] Preferably, the bottom of the tooling aluminum profile frame is fixedly connected with three different types of fixing plates: a 90-degree fixing plate, a T-shaped fixing plate, and a center fixing plate.

[0017] Preferably, the inner wall of the tooling aluminum profile frame away from the hydraulic jacking mechanism is equipped with anti-collision rubber.

[0018] Working principle: When the power module of the converter valve needs to be replaced, the tooling is first moved to the bottom of the power module body 32 of the valve tower 31 via the rubber wheels 13. Then, the lever locking mechanism is operated, and the handwheel 20 is turned to drive the stainless steel screw 19, so that the lever assembly 7 drives the frame fixing plate 8 and the frame lifting lug plate 9 to lock with the valve tower 31 structure, fixing the tooling aluminum profile frame 11. After fixing, the control box 22 is started, and the lifting hydraulic cylinder 24 pushes the cylinder support plate 6, so that the lifting support plate 4 rotates around the lifting support round rod 10. The lifting roller 23 at its end rolls along the lifting sliding channel steel 27, thereby... The aluminum profile frame 3 and its lifting rollers 2 are steadily lifted, raising the power module 32 to a height level with the external rollers 30. Finally, by pulling the power module 32, the external rollers 30 rotate as the power module 32 moves, allowing the power module 32 to be safely moved out along the roller track. It is then lifted away by hoisting equipment, and a new power module 32 is placed on the rollers 30 and pushed, so that the newly replaced power module 32 is installed and fixed on the valve tower 31 under the action of the rollers 30 and the lifting rollers 2.

[0019] This invention provides a tooling for replacing the power module of a converter valve. It has the following advantages: 1. This invention, through an innovative pull rod locking mechanism, enables reliable locking of the tooling from above the power module, eliminating the need for operators to enter the high-risk area at the bottom of the valve tower for installation and fixation. Technically, this completely eliminates the risk of personnel being pinched or struck by falling objects, greatly ensuring personal safety.

[0020] 2. The present invention forms a stable lifting system through a hydraulic lifting mechanism. Its rolling friction method ensures a smooth and impact-free lifting process, and ensures the structural stability and minimizes deformation of the entire tooling during load-bearing and operation.

[0021] 3. This invention features T-shaped grooves integrated into both the tooling aluminum profile frame and the lifting aluminum profile frame. This allows for flexible adjustment of the spacing between the external unpowered rollers and the lifting unpowered rollers, which can be adapted to the dimensions of different power module models. This feature enables a single tooling set to accommodate multiple power module specifications, eliminating the need for customized tooling for different models. This significantly improves the equipment's versatility and reduces the variety of tooling configurations and replacement time. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the tooling working model of the present invention; Figure 2 This is a schematic diagram of the overall tooling model of the present invention; Figure 3 This is a schematic diagram of the tooling hydraulic lifting device of the present invention; Figure 4 This is a schematic diagram showing the disassembled model of the tooling hydraulic lifting device of the present invention; Figure 5 This is a schematic diagram showing the overall disassembly of the tooling replacement model of the present invention.

[0023] The components include: 1. Roller support seat; 2. Lifting non-powered roller; 3. Lifting aluminum profile frame; 4. Lifting support plate; 5. Lifting support seat; 6. Hydraulic cylinder support plate; 7. Tie rod assembly; 8. Frame fixing plate; 9. Frame lifting lug plate; 10. Lifting support round rod; 11. Tooling aluminum profile frame; 12. Fixing seat; 13. Rubber wheel; 14. 90-degree fixing plate; 15. T-shaped fixing plate; 16. Center fixing plate; 17. Tie rod seat; 18. Locking nut; 19. Stainless steel screw; 20. Handwheel; 21. Frame end lifting lug plate; 22. Control box; 23. Lifting roller; 24. Lifting hydraulic cylinder; 25. Hydraulic cylinder support seat; 26. Counterweight; 27. Lifting sliding channel steel; 28. Large capacity battery; 29. ​​Anti-collision rubber; 30. External non-powered roller; 31. Valve tower; 32. Power module body. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0025] Please see the appendix Figure 1 - Appendix Figure 2 and attached Figure 4 - Appendix Figure 5 This invention provides a tooling for replacing a converter valve power module 32, including a valve tower 31 and a tooling aluminum profile frame 11. The power module 32 is fixedly connected to the upper part of the valve tower 31. Frame fixing plates 8 are fixedly connected to both the front and rear sides of one side of the tooling aluminum profile frame 11. Frame lifting lug plates 9 are installed at both the front and rear of the tooling aluminum profile frame 11 at its center. Pull rod locking mechanisms are fixedly connected to the outer sides of both the frame fixing plates 8 and the frame lifting lug plates 9. The tooling aluminum profile frame 11 is mounted on the valve tower 31 through the frame fixing plates 8 and the frame lifting lug plates 9. A hydraulic lifting mechanism is installed inside one side of the tooling aluminum profile frame 11. The upper part of the hydraulic lifting mechanism is fixedly connected to the lifting aluminum profile frame 3. Roller support seats 1 are evenly distributed on the front and back of the upper part of the lifting aluminum profile frame 3 and the tooling aluminum profile frame 11. External non-powered rollers 30 are installed inside the roller support seats 1 on the upper part of the tooling aluminum profile frame 11. Lifting non-powered rollers 2 are installed inside the roller support seats 1 on the upper part of the lifting aluminum profile frame 3. Anti-collision rubber 29 is installed on the inner wall of the tooling aluminum profile frame 11 on the side away from the hydraulic lifting mechanism.

[0026] The tooling frame structure is meticulously designed, using high-strength heavy-duty aluminum profiles as the main material. This special alloy material boasts excellent load-bearing capacity and superior mechanical strength. The frame connection employs a combination of high-strength bolts and anti-loosening nuts. This connection method has undergone rigorous testing to ensure a stable and reliable connection between all components. In actual use, even after frequent movement and continuous stress, the connections have never loosened. Simulation calculations using professional stress analysis software demonstrate that the load-bearing capacity of this frame structure fully meets the static load requirements of the power module 32, while also effectively coping with the dynamic impact forces generated during movement.

[0027] In terms of safety protection, a full-circumference protective railing has been specially added to the tooling frame, and anti-collision rubber 29 is installed at each end of the railing. This design can effectively reduce the impact force on the aluminum profile frame during the pulling out of the power module body 32, thereby preventing deformation and damage to the external sheet metal of the power module body 32. This design also improves ease of movement.

[0028] Furthermore, both the tooling aluminum profile frame 11 and the lifting aluminum profile frame 3 are made of aluminum profiles with built-in grooves, allowing the rollers mounted on the aluminum profiles to freely adjust their spacing according to actual needs. This structure greatly enhances the adaptability of the tooling. The rollers mounted on the aluminum profiles can be freely adjusted in spacing according to actual needs. This adjustable design allows it to perfectly adapt to different sizes of converter valve power modules 32, including various specifications of power modules 32 produced by well-known manufacturers. In addition, the selected aluminum profiles have excellent corrosion resistance, and their surface has undergone special treatment, enabling them to better adapt to the humid climates of some regions.

[0029] These combined advantages enable the tooling to maintain stable performance over long-term use, significantly reducing the risk of failures caused by environmental factors and component wear. This not only effectively extends the overall service life of the tooling but also significantly reduces the frequency of replacement and maintenance, thereby achieving a substantial reduction in operating costs. Overall, the tooling frame demonstrates excellent performance in terms of safety, reliability, adaptability, and economy.

[0030] The new tooling design employs an advanced pull-rod locking device. This device, through its ingenious cooperation with the frame mounting plate, securely fixes the power module 32 replacement tooling to the frame structure of the power module 32. This innovative fixing method not only improves the stability of the tooling but also enhances safety during operation, making the replacement of the power module 32 more efficient and reliable. The pull-rod locking mechanism is designed with ease of on-site operation in mind. Its use in conjunction with the frame mounting plate ensures a tight connection between the tooling and the power module 32 frame, achieving a more precise and robust fixing effect. The special structural design of the pull-rod locking mechanism ensures stable contact surfaces between the tooling and the frame, resulting in a more even force distribution and maintaining a good fixed state even during long-term use.

[0031] Please see the appendix Figure 1 - Appendix Figure 5The lever locking mechanism includes a stainless steel screw 19, with a handwheel 20 fixedly connected to one end of the stainless steel screw 19. A lever assembly 7 is externally threaded to one end and one side of the stainless steel screw 19. The lever assembly 7 includes a lever seat 17 and a locking nut 18. The two lever seats 17 are respectively fixedly connected to one side of the frame fixing plate 8 and the frame lifting lug plate 9. The frame fixing plate 8 is fixedly connected to the front and rear sides of the tooling aluminum profile frame 11. The frame lifting lug plate 9 is slidably connected to the outside of the tooling aluminum profile frame 11 through the lever seats 17. By rotating the handwheel 20, the stainless steel screw 19 is driven to rotate, causing the lever assembly 7 to move outside the stainless steel screw 19, and the frame lifting lug plate 9 moves under the drive of the lever assembly 7 to adjust its position. Furthermore, to further enhance the stability and reliability of the tooling during operation, a locking nut 18 is added to the original structure. This locking nut 18 is made of high-strength material and possesses excellent vibration resistance, effectively preventing loosening of the tooling during prolonged operation or under external impact. Through precision-machined thread fit and appropriate preload adjustment, the locking nut 18 securely connects all components of the tooling, ensuring the entire system maintains stable operation even under high-speed or heavy-load conditions. This significantly improves the safety performance and service life of the tooling, providing operators with more reliable work protection.

[0032] This optimized design not only improves assembly efficiency but also significantly enhances the safety and reliability of the tooling during use. It effectively avoids the safety hazards of workers needing to enter the area beneath the power module 32 frame, fundamentally eliminating potential injuries from working in high-risk areas. This solution not only significantly improves overall work efficiency and shortens equipment maintenance and operation cycles but also drastically reduces manual operations that previously required multiple people. Simultaneously, this measure reduces the possibility of human error, ensuring standardized and consistent work processes, providing dual protection for production safety and work efficiency.

[0033] Furthermore, it fully considers the needs of future intelligent upgrades. With simple modifications, a high-performance servo motor and PLC control system can be added to the existing lever locking device to achieve precise closed-loop control of the lever operation. At the same time, the PLC system can also achieve linkage control with the hydraulic lifting mechanism, automatically completing the entire replacement process through preset programs, thereby upgrading the traditional manual hydraulic system into an intelligent device with remote monitoring and automatic operation functions.

[0034] The hydraulic lifting mechanism includes a lifting hydraulic cylinder 24. The output end of the lifting hydraulic cylinder 24 is fixedly connected to a cylinder support plate 6. A lifting support rod 10 is rotatably connected to one side of the cylinder support plate 6. Multiple lifting support rods 10 are provided. Two lifting support plates 4 are rotatably connected to the two ends of the lifting support rod 10. A sliding component is installed at the end of the lifting support plate 4 that is close to the lifting hydraulic cylinder 24. The sliding component is used to ensure the smoothness and stability of the lifting aluminum profile frame 3 when the hydraulic lifting mechanism lifts and lowers. The lifting hydraulic cylinder 24 is fixedly connected to the tooling aluminum profile frame 11 through a hydraulic cylinder support seat 25, which ensures the stability of the lifting hydraulic cylinder 24 during operation. The sliding assembly includes a lifting roller 23, which is rotatably connected to the inside of the lifting support plate 4 near the lifting hydraulic cylinder 24. Lifting sliding channel steel 27 is fixedly connected to the bottom side of the tooling aluminum profile frame 11 and the bottom of the lifting aluminum profile frame 3. The lifting roller 23 is slidably connected inside the lifting sliding channel steel 27. Lifting support seats 5 are fixedly connected to the ends of the two lifting support plates 4 away from the lifting hydraulic cylinder 24, and the two lifting support seats 5 are fixedly connected to the tooling aluminum profile frame 11. The bottom of the frame 1 and the bottom of the lifting aluminum profile frame 3 further ensure the stability of the lifting aluminum profile frame 3 during lifting and lowering. When the lifting hydraulic cylinder 24 is started, the lifting support plate 4 is driven by the cylinder support plate 6 and the lifting support rod 10 to rotate outside the lifting support rod 10. As the lifting support plate 4 rotates, the lifting roller 23 slides inside the lifting sliding channel steel 27, and the lifting support seat 5 on the other side cooperates with the lifting roller 23 to lift and lower the lifting aluminum profile frame 3 together. A control box 22 is installed on the side of the tooling aluminum profile frame 11 away from the hydraulic jacking mechanism. The control box 22 is electrically connected to the jacking hydraulic cylinder 24. A counterweight 26 is fixedly connected to the bottom of the side of the tooling aluminum profile frame 11 close to the control box 22. A large-capacity battery 28 is installed on the upper part of the counterweight 26. The large-capacity battery 28 continuously supplies power to the jacking hydraulic cylinder 24.

[0035] This tooling equipment utilizes a bottom-mounted hydraulic lifting mechanism, employing a hydraulic drive system to achieve smooth and reliable vertical lifting. Once the tooling is fixed below the power module 32, the operator simply needs to activate the hydraulic lifting mechanism to smoothly raise the power module 32 to a horizontal position perfectly aligned with the external conveyor rollers. This ensures the power module 32 can be smoothly pulled out of the equipment for replacement. The use of this tooling greatly simplifies the replacement process, transforming previously complex operations into a simple and quick standard procedure, thereby improving the efficiency of power module 32 replacement and reducing the operator's workload and safety risks. Furthermore, the bottom-mounted hydraulic lifting mechanism boasts excellent load-bearing capacity, easily meeting the lifting requirements of power modules 32 of different specifications, ensuring stable and reliable operation under various working conditions. The hydraulic drive system has been finely calibrated, resulting in a smoother lifting process for the power module 32, effectively preventing potential impacts and damage to the equipment caused by sudden lifting. This innovative design not only enhances the applicability and flexibility of the tooling equipment, but also provides a strong guarantee for the rapid and safe replacement of the converter valve power module 32.

[0036] To prevent mechanical damage to the tooling or converter power module during operation, the hydraulic control system is equipped with a precision mechanical limit device. This limiter, made of high-strength alloy material, effectively prevents overtravel of the lifting hydraulic cylinder 24 during lifting through a precise stroke control mechanism, thus ensuring safe operation of the equipment. Simultaneously, to improve the system's environmental adaptability and operational reliability, the entire hydraulic control system is also equipped with a high-performance, high-capacity mobile emergency power supply, fully meeting the power needs under different working conditions. Even in special environments without external power, such as field operations or power outages, the lifting hydraulic cylinder 24 can maintain stable and reliable operation via the high-capacity battery 28. This design is not only suitable for replacing the converter valve power module 32 at different installation locations in the substation, but also perfectly supports the replacement of the power module 32 on aerial work platforms, greatly improving operational flexibility and safety.

[0037] Please see the appendix Figure 1 - Appendix Figure 2 and attached Figure 4 - Appendix Figure 5 The aluminum profile frame 11 of the tooling is fixedly connected to the front and rear of the side away from the hydraulic jacking mechanism. The upper interior of the frame end lifting lug plate 21 and the frame lifting lug hanging plate 9 are both provided with round holes to realize the eccentric lifting of the replacement tooling.

[0038] This tooling hoisting structure employs an eccentric hoisting design, a unique approach that offers significant advantages. It allows for the rapid and precise embedding of the tooling into the bottom space of the converter valve power module 32 frame. Compared to traditional hoisting methods, this design completely eliminates the cumbersome process of workers needing to enter the bottom of the converter valve power module 32 frame for operation. This not only greatly improves work efficiency and shortens operation time but, more importantly, effectively ensures worker safety and reduces the risks associated with working at heights. To further optimize the eccentric lifting performance of the tooling and ensure balance and stability during hoisting, after multiple tests and calculations, a precisely calculated counterweight 26 was added to the outer end of the tooling. This perfectly counteracts the torque generated during eccentric hoisting, making the entire hoisting process more stable and reliable.

[0039] Please see the appendix Figure 1 - Appendix Figure 2 and attached Figure 5 The bottom ends of the tooling aluminum profile frame 11 are fixedly connected to rubber wheels 13 via fixing seats 12. This four-wheel configuration allows the tooling to steer flexibly and move smoothly on the ground. In addition, all wheels are equipped with a locking function to fix the tooling position when needed and prevent accidental slippage. The bottom of the tooling aluminum profile frame 11 is fixedly connected to three different types of fixing plates: a 90-degree fixing plate 14, a T-shaped fixing plate 15, and a center fixing plate 16. These are used to ensure the uprightness and stability of the overall structure of the tooling aluminum profile frame 11, as well as to distribute the load and improve the rigidity of the overall structure. Through the combined use of these three types of fixing plates, a stable, reliable, and highly adaptable support foundation is formed.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power module replacement fixture for a converter valve, comprising a valve tower (31) and a fixture aluminum profile frame (11), characterized in that, The upper part of the valve tower (31) is fixedly connected to a power module body (32). A frame fixing plate (8) is fixedly connected to both the front and back of one side of the tooling aluminum profile frame (11). A frame lifting lug plate (9) is installed at both the front and back of the tooling aluminum profile frame (11) at its center. A pull rod locking mechanism is fixedly connected to the outer sides of both the frame fixing plate (8) and the frame lifting lug plate (9). The tooling aluminum profile frame (11) is installed on the valve tower (31) via the frame fixing plate (8) and the frame lifting lug plate (9). A hydraulic lifting mechanism is installed in one side of the profile frame (11). The upper part of the hydraulic lifting mechanism is fixedly connected to the lifting aluminum profile frame (3). Roller support seats (1) are evenly distributed on the front and back of the upper part of the other side of the lifting aluminum profile frame (3) and the tooling aluminum profile frame (11). An external non-powered roller (30) is installed inside the roller support seat (1) on the upper part of the tooling aluminum profile frame (11). A lifting non-powered roller (2) is installed inside the roller support seat (1) on the upper part of the lifting aluminum profile frame (3).

2. The converter valve power module replacement fixture according to claim 1, characterized in that, The pull rod locking mechanism includes a stainless steel screw (19), one end of which is fixedly connected to a handwheel (20). One end and one side of the stainless steel screw (19) are externally threaded to a pull rod assembly (7). The pull rod assembly (7) includes a pull rod seat (17) and a locking nut (18). The two pull rod seats (17) are respectively fixedly connected to one side of the frame fixing plate (8) and the frame lifting lug plate (9). The frame fixing plate (8) is fixedly connected to the front and rear sides of the tooling aluminum profile frame (11). The frame lifting lug plate (9) is slidably connected to the outside of the tooling aluminum profile frame (11) through the pull rod seat (17). The hydraulic lifting mechanism includes a lifting hydraulic cylinder (24). The output end of the lifting hydraulic cylinder (24) is fixedly connected to a cylinder support plate (6). A lifting support rod (10) is rotatably connected to one side of the cylinder support plate (6). There are multiple lifting support rods (10). Two lifting support plates (4) are rotatably connected to the two ends of the lifting support rod (10). A sliding component is installed at the end of the lifting support plate (4) that is close to the lifting hydraulic cylinder (24). The sliding component is used to ensure the smoothness and stability of the lifting aluminum profile frame (3) when the hydraulic lifting mechanism lifts and lowers. The lifting hydraulic cylinder (24) is fixedly connected to the tooling aluminum profile frame (11) through a hydraulic cylinder support seat (25), which ensures the stability of the lifting hydraulic cylinder (24) during operation.

3. The converter valve power module replacement fixture according to claim 2, characterized in that, The sliding assembly includes a lifting roller (23), which is rotatably connected to the inside of the lifting support plate (4) near the lifting hydraulic cylinder (24). The bottom side of the tooling aluminum profile frame (11) and the bottom of the lifting aluminum profile frame (3) are both fixedly connected to lifting sliding channel steel (27), and the lifting roller (23) is slidably connected inside the lifting sliding channel steel (27).

4. The converter valve power module replacement fixture according to claim 2, characterized in that, The two lifting support plates (4) are respectively fixedly connected to the lifting support base (5) at the ends away from the lifting hydraulic cylinder (24). The two lifting support bases (5) are respectively fixedly connected to the bottom side of the tooling aluminum profile frame (11) and the bottom of the lifting aluminum profile frame (3), further ensuring the stability of the lifting aluminum profile frame (3) when it is raised and lowered.

5. The converter valve power module replacement fixture according to claim 1, characterized in that, The aluminum profile frame (11) of the tooling is fixedly connected to the front and rear of the side away from the hydraulic jacking mechanism with frame end lifting lugs (21). The upper interior of the frame end lifting lugs (21) and the frame lifting lugs (9) are provided with round holes to realize the eccentric lifting of the tooling to be replaced.

6. The converter valve power module replacement fixture according to claim 1, characterized in that, Both ends of the bottom of the tooling aluminum profile frame (11) are fixedly connected to rubber wheels (13) via fixing seats (12).

7. The converter valve power module replacement fixture according to claim 1, characterized in that, A control box (22) is installed on the side of the tooling aluminum profile frame (11) away from the hydraulic jacking mechanism. The control box (22) is electrically connected to the jacking hydraulic cylinder (24).

8. The converter valve power module replacement fixture according to claim 7, characterized in that, The tooling aluminum profile frame (11) has a counterweight (26) fixedly connected to the bottom of the side near the control box (22). A large-capacity battery (28) is installed on the upper part of the counterweight (26), and the large-capacity battery (28) continuously supplies power to the lifting hydraulic cylinder (24).

9. The converter valve power module replacement fixture according to claim 1, characterized in that, The bottom of the tooling aluminum profile frame (11) is fixedly connected with three different types of fixing plates: a 90-degree fixing plate (14), a T-shaped fixing plate (15), and a center fixing plate (16).

10. The converter valve power module replacement fixture according to claim 1, characterized in that, The inner wall of the tooling aluminum profile frame (11) away from the hydraulic jacking mechanism is equipped with anti-collision rubber (29).

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