A cartridge structure inner spacer ring disassembling tool and method

Abstract

This invention belongs to the field of aero-engine overhaul technology, and discloses a box-type internal spacer disassembly tool and method. The tool consists of a support plate, a pressing component, and a base. The support plate and base are concentrically fixed by a fixing connector. The pressing component is threaded to the support plate and abuts against the end face of the base. A positioning connector passes through a radial through-hole in the support plate to achieve radial positioning with the spacer. This tool ensures precise alignment between the tool and the spacer through the positioning connector, avoiding misalignment. The threaded drive converts rotational motion into controllable axial pressing force, ensuring the force is evenly applied to the axial end face of the spacer. Simultaneously, the support plate and base form a stable rigid support, dispersing stress and preventing localized deformation. Using this tool achieves rapid, efficient, and non-destructive disassembly of the spacer, solving the problems of difficulty in applying force manually, low efficiency, and easy damage to thin-walled spacers and rotor discs in traditional processes. This significantly reduces the scrap rate and rework requirements, thereby ensuring production progress and saving repair costs.

Description

Technical Field

[0001] This invention belongs to the field of aero-engine overhaul technology, and particularly relates to a tool and method for disassembling the inner spacer of a box-type structure. Background Technology

[0002] As a key piece of equipment in the core track of high-end manufacturing, aero-engines have a large-scale aftermarket maintenance market characterized by high technical barriers. Engine overhaul is a crucial step in ensuring engine performance recovery and extending service life. High-pressure turbine components, as core components of the engine's hot end, directly impact the overall overhaul outcome and cost control due to the quality and efficiency of their maintenance. During the disassembly process of aero-engines during overhaul, the spacer ring within the high-pressure turbine rotor housing is a critical component requiring multiple disassemblies. This spacer ring is fitted onto the shoulder of the first-stage rotor disk of the high-pressure turbine engine using a tight fit. Its disassembly is a vital step in the maintenance of high-pressure turbine components, directly affecting the engine overhaul schedule and maintenance economy.

[0003] Currently, the industry uses a traditional process to disassemble this spacer ring. Specifically, the outer surface of the process bolt is wrapped with adhesive tape and inserted into the radial hole around the spacer ring. A double-hook hammer is then hung on the process bolt rod, and disassembly is achieved through hand strength and repeated upward movement of the hammer. This process has significant drawbacks: the hand is prone to tilting and it is difficult to exert force during operation, resulting in low disassembly efficiency. Especially for engines that have reached the end of their service life or have undergone testing, the spacer ring's tightness with the rotor disc increases significantly under the harsh working environment of long-term high temperature, high pressure, and high corrosion, greatly increasing the difficulty of disassembly. Furthermore, this spacer ring is a thin-walled, flexible annular part with a stop diameter and wall thickness of only 2mm. It has poor rigidity and is easily deformed. Traditional disassembly methods easily cause the spacer ring to be scrapped and damage to the high-vortex stage 1 rotor disc, leading to the need for rework of the high-vortex stage 1 rotor disc, which delays production and significantly increases repair costs. A search revealed that existing related technologies, such as the bearing puller for aero-engine assembly with Chinese patent publication number CN206317013U, employ a chuck design and place it on the exposed end face of the bearing stop. However, the spacer involved in this technology does not have an exposed end face at the stop face where it mates with the first-stage rotor disk of the high-speed vortex engine, and the inner diameter of the first-stage rotor disk of the high-speed vortex engine is relatively large (approximately Ф300mm). This bearing puller cannot meet the disassembly requirements of such spacers and cannot solve the aforementioned technical problems.

[0004] It is evident that existing technologies lack a dedicated disassembly method for the thin-walled annular flexible spacer within the box-type structure of a high-pressure turbine rotor in aero engines. Traditional disassembly processes and existing related tools cannot achieve rapid, efficient, and non-destructive disassembly of this spacer, resulting in technical problems such as difficulty in disassembly, easy damage to parts, low efficiency, and high cost. Summary of the Invention

[0005] This invention provides a tool and method for disassembling the inner spacer of a box-type structure. Using this tool and method can effectively solve the problems of disassembly difficulties, easy damage to parts, low efficiency, and high cost existing in traditional disassembly processes and related tools. It can achieve rapid, efficient, and non-destructive disassembly of the spacer.

[0006] To achieve the above objectives, the present invention employs the following technical content: A box-type internal spacer disassembly tool includes a support plate, a top pressing component, a base, a fixing connector, and a positioning connector; The support plate is a cylindrical structural component with a positioning hole and a threaded hole at the top, and an annular groove and a radial through hole in the circumference at the bottom. The base is a hollow cylindrical structure and is concentrically fixed to the support plate through a fixing connector; The top pressing member is connected to the threaded hole of the support plate by a threaded drive, and the end of the top pressing member abuts against the end face of the base; the positioning connector is inserted through the radial through hole of the support plate and is used to form a radial positioning connection with the spacer.

[0007] Furthermore, the positioning holes at the top of the support plate are two through holes, and the threaded holes are four evenly distributed threaded through holes. The pitch circles of the positioning holes and the threaded holes are concentric with the center of the support plate. The multiple radial through holes at the bottom of the support plate are evenly distributed.

[0008] Furthermore, the base end face is provided with a connecting threaded hole, and the fixing connector is a screw; The screw passes through the positioning hole of the support plate and is fixedly engaged with the connecting threaded hole of the base. The base is used to abut against and protect the end face of the high-vortex first-stage rotor disk.

[0009] Furthermore, the top pressure component employs multiple evenly distributed top pressure bolts, which apply top pressure to the base through threaded transmission to drive the support plate to generate axial tension.

[0010] Furthermore, the positioning connector uses multiple evenly distributed pins, which, after being inserted, achieve radial positioning and circumferential fixation of the support plate and the spacer.

[0011] A method for decomposing the inner spacer of a box-type structure, based on the aforementioned decomposition tool, includes: Position and install the assembly of the high-vortex first-stage rotor disk and spacer; The support plate and the base are concentrically fixed into a whole by using fasteners; After fixing, the support plate and the base are installed into the assembly, so that the annular groove of the support plate fits with the end face of the spacer and the base fits with the end face of the high vortex first stage rotor disk. The support plate and the spacer are positioned and connected by the positioning connector. Screw the top pressure component into the threaded hole of the support plate and abut against the base. Tightening the top pressure component generates axial tension, causing the spacer to separate from the high-vortex stage 1 rotor disc.

[0012] Furthermore, during the process of positioning and placing the assembly of the high-vortex first-stage rotor disk and the spacer ring, the assembly is placed on the support frame with the rear end of the high-vortex first-stage rotor disk facing upward.

[0013] Furthermore, during the process of installing the fixed support plate and base into the assembly, the base is embedded in the annular cavity formed by the spacer ring and the high-vortex first-stage rotor disk to achieve end face contact and protection.

[0014] Furthermore, during the process of generating axial tension by tightening the top pressure component, multiple top pressure components are simultaneously and evenly tightened to ensure that the tension of the support plate on the spacer is evenly distributed.

[0015] Furthermore, during the process of generating axial tension by the tightening top pressure component, the top pressure component indirectly abuts against the high-vortex stage 1 rotor disk through the base.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention provides a box-type internal spacer disassembly tool. The tool consists of a support plate, a pressing component, and a base. The support plate and base are concentrically fixed by a fixing connector. The pressing component is threaded to the support plate and abuts against the end face of the base. A positioning connector passes through a radial through-hole in the support plate to achieve radial positioning with the spacer. This tool ensures precise alignment between the tool and the spacer through the positioning connector, avoiding misalignment. The threaded drive converts rotational motion into controllable axial pressing force, ensuring the force is evenly applied to the axial end face of the spacer. Simultaneously, the support plate and base form a stable rigid support, dispersing stress and preventing localized deformation. Using this tool achieves rapid, efficient, and non-destructive disassembly of the spacer, solving the problems of difficulty in applying force manually, low efficiency, and easy damage to thin-walled spacers and rotor discs in traditional processes. This significantly reduces the scrap rate and rework requirements, thereby ensuring production progress and saving repair costs.

[0017] This invention also provides a method for disassembling a spacer ring within a box-type structure. Based on the aforementioned tool for disassembling a spacer ring within a box-type structure, this method involves placing and positioning the assembly, then inserting the fixed support plate and base as a whole into the interior, ensuring they fit against the spacer ring and rotor disk end faces respectively. Radial positioning is achieved using a positioning connector, and finally, the top pressure component is tightened to abut against the base, generating axial tension to complete the disassembly. This method utilizes the tool's concentric fixing structure and end face fit design to ensure precise alignment and stable support during operation, converting the traditionally unstable impact force into a precisely controllable axial tension. The force flow is uniformly transmitted along the axial direction, effectively avoiding lateral load imbalance. This method achieves efficient, stable, and non-destructive disassembly of the spacer ring, completely solving the problems of low efficiency caused by difficulty in applying force and easy deviation in traditional processes. It also prevents deformation and scrapping of thin-walled spacer rings and damage to the rotor disk, thereby significantly reducing the rework rate and cost, and ensuring maintenance progress. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a box-type internal spacer disassembly tool provided in an embodiment of the present invention; Figure 2 A three-dimensional diagram of a box-type internal spacer disassembly tool provided in an embodiment of the present invention; Figure 3 This is a three-dimensional view from another perspective of a tool for disassembling the inner spacer of a box-type structure, provided in an embodiment of the present invention.

[0019] Figure label: 1. Support plate; 2. Top pressure bolt; 3. Base; 4. Screw; 5. Pin; 6. Spacer ring; 7. High-vortex first-stage rotor disc. Detailed Implementation

[0020] To make the technical problems solved by the present invention, the technical solutions, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of the present invention. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] As mentioned in the background technology, during the current disassembly process, the hand is prone to deflection and cannot exert force, especially for engines that have reached the end of their service life or have been tested. Because they work in high temperature, high pressure and high corrosion environment, the tightness is very large, which makes disassembly difficult and can easily cause the waste of the spacer ring and damage to the high vortex first stage rotor disk. Ultimately, this leads to the rework of the high vortex first stage rotor disk, affecting the production schedule and increasing repair costs.

[0025] To address the aforementioned problems, this embodiment provides a box-type internal spacer disassembly tool. This tool cleverly utilizes the structural characteristics of the part, designing an annular groove and pin connection and positioning to achieve rapid and efficient disassembly. This tool solves the problem of blindly disassembling thin-walled annular flexible parts using only hand force and a hammer. Furthermore, compared to bearing pullers, this tool is simpler, lighter, and easier to operate. Using this tool optimizes the disassembly process of internal spacers, avoiding part scrap, damage, or rework, reducing labor intensity, and improving disassembly efficiency.

[0026] In this embodiment, as Figures 1-3As shown, the box-type internal spacer disassembly tool includes a support plate 1, a top pressing component, a base 3, a fixing connector, and a positioning connector. The support plate 1 is a cylindrical structure with a positioning hole and a threaded hole at the top, an annular groove at the bottom, and a radially through hole in the circumference. The base 3 is a hollow cylindrical structure, concentrically fixed to the support plate 1 via the fixing connector. The top pressing component forms a threaded connection with the threaded hole in the support plate 1, and its end abuts against the end face of the base 3. The positioning connector passes through the radially through hole in the support plate 1 to form a radially positioning connection with the spacer 6. This structural design utilizes the coordinated cooperation of all components... This design achieves stable separation of the spacer ring 6 from the high-vortex first-stage rotor disk 7. The support plate 1, as the core load-bearing component, has a cylindrical structure that ensures uniform force distribution. The positioning holes and threaded holes at the top provide installation references for the fixing connectors and the top pressure components, respectively. The annular groove at the bottom facilitates fitting and positioning with the spacer ring 6, while the radial through holes provide installation channels for the positioning connectors. The hollow cylindrical structure of the base 3 can achieve concentric fixation with the support plate 1 and provide stable force support for the top pressure components. The overall structure is compact and adaptable to the internal space of the box-type structure, effectively solving the problems of traditional disassembly tools being difficult to adapt to the box-type structure and having inaccurate positioning.

[0027] In this embodiment, the top of the support plate 1 has two positioning holes, specifically two Ф9 through holes, and four evenly distributed threaded through holes, specifically four M10 threaded through holes. The pitch circles of the positioning holes and threaded holes are concentric with the center of the support plate 1. The bottom of the support plate 1 has multiple radial through holes evenly distributed, specifically four Ф9 evenly distributed through holes. The bottom of the support plate 1 has an annular groove with a length of approximately 7.5 mm and a depth of approximately 25 mm. The radial through holes are provided on both the inner and outer circles of the bottom. Specifically, the two Ф9 positioning holes are used to cooperate with the fixing connector to realize the connection between the support plate 1 and the bottom. The precise positioning of seat 3 and the four evenly distributed M10 threaded through holes ensure that the top pressure components are evenly distributed, guaranteeing the uniform transmission of subsequent top pressure. The four evenly distributed Ф9 radial through holes facilitate the precise docking of the positioning connector and spacer 6. The size design of the annular groove can perfectly fit the end face of spacer 6, ensuring the stable fit between support plate 1 and spacer 6 and avoiding relative sliding during disassembly. The concentric design of the pitch circle and the center of support plate 1 further ensures that the force on each component is uniform and prevents support plate 1 from tilting, thereby protecting spacer 6 and high-vortex first-stage rotor disk 7 from damage.

[0028] As another preferred embodiment, the base 3 is a hollow cylindrical metal plate with two M6 threaded holes on its end face. The fixing connector is a screw 4, which is a common M6 process screw. The screw 4 passes through the positioning hole of the support plate 1 and is fixedly engaged with the connecting threaded hole of the base 3. The base 3 is used to abut against and protect the end face of the high-vortex first-stage rotor disk 7. It can be explained that the hollow cylindrical metal plate base 3 has sufficient structural strength to withstand the top pressure applied by the top pressure component, and can also reduce the overall weight of the tool, making it easy to install and operate. The two M6 threaded holes correspond precisely to the two Ф9 positioning holes of the support plate 1. Through the fixing engagement of the M6 ​​screw 4, it can be ensured that the support plate 1 and the base 3 are fixed concentrically, avoiding relative misalignment between the two. At the same time, the base 3 abuts against the end face of the high-vortex first-stage rotor disk 7, which can isolate the top pressure component from direct contact with the high-vortex first-stage rotor disk 7, effectively preventing the top pressure component from causing scratches, squeezing and other damage to the high-vortex first-stage rotor disk 7, and playing a good protective role.

[0029] In this embodiment, the top-pressing component uses multiple evenly distributed top-pressing bolts 2, specifically four evenly distributed top-pressing bolts 2. These top-pressing bolts 2 are ordinary M10 process bolts. The top-pressing bolts 2 apply top pressure to the base 3 through threaded transmission to drive the support plate 1 to generate axial tension. Specifically, the four evenly distributed M10 top-pressing bolts 2 are precisely matched with the four M10 threaded through holes on the top of the support plate 1. The threaded transmission method can achieve precise adjustment of the top pressure, making it easy to control the distribution force. The even distribution of multiple top-pressing bolts 2 can make the top pressure act evenly on the base 3, thereby making the support plate 1 generate uniform axial tension. This avoids deformation and damage to the spacer 6 due to uneven force caused by single-point force. At the same time, the selection of ordinary M10 process bolts reduces the manufacturing cost of the tool and is easy to purchase and replace, improving the practicality and economy of the tool.

[0030] As another preferred embodiment, in order to further improve the force transmission stability of the top-pressing bolt 2 and prevent loosening during tightening, a compression spring is sleeved on the rod of the top-pressing bolt 2. One end of the compression spring abuts against the top end face of the support plate 1, and the other end abuts against the head of the top-pressing bolt 2. The elastic coefficient of the compression spring matches the rated force of the top-pressing bolt 2. The uniform distribution of the compression spring and the top-pressing bolt 2, the thread transmission function and the synchronous tightening requirements work together to achieve uniform force transmission of the top-pressing bolt 2. Synchronous tightening ensures uniform tension. The compression spring keeps the top-pressing bolt 2 in contact with the base 3 through elastic preload, preventing loosening due to vibration during thread transmission. At the same time, it can absorb instantaneous vibration during the top-pressing process and avoid unstable transmission of top pressure. With the four evenly distributed top-pressing bolts 2, the reaction force on the support plate 1 is more stable, which makes the separation process of the spacer ring 6 smoother. The synergistic effect of "uniform force transmission + stable anti-loosening + vibration buffering" is achieved, which improves the force transmission stability of the individual top-pressing bolt 2 and effectively avoids disassembly failure or component damage caused by bolt loosening.

[0031] As another preferred embodiment, the positioning connector uses multiple evenly distributed pins 5, specifically four evenly distributed pins 5. These pins 5 are ordinary Ф8 process pins. After the pins 5 are installed, they achieve radial positioning and circumferential fixation of the support plate 1 and the spacer 6. Explain that the four evenly distributed Ф8 pins 5 pass through the Ф9 radial through holes at the bottom of the support plate 1 and connect with the radial holes of the spacer 6, which can achieve precise radial positioning of the support plate 1 and the spacer 6, while restricting their relative circumferential movement. This ensures that the support plate 1 and the spacer 6 move synchronously during the disassembly process, avoiding force offset caused by relative sliding, and thus preventing problems such as single-point force and local deformation of the spacer 6. The use of ordinary Ф8 process pins is simple in structure, convenient to install, and can ensure sufficient connection strength, further improving the stability and reliability of the tool.

[0032] Based on the above-mentioned tool for disassembling the inner spacer of a box-type structure, this embodiment also provides a method for disassembling the inner spacer of a box-type structure, which specifically includes the following steps: First, the assembly of the high-speed vortex stage 1 rotor disk 7 and the spacer ring 6 is positioned and placed. In this embodiment, the assembly is placed on the support frame with the rear end of the high-speed vortex stage 1 rotor disk 7 facing upward. Specifically, a sling is used to place the high-speed vortex stage 1 rotor disk shaft assembly on the support frame with the rear end facing upward. It can be explained that placing the assembly with the rear end of the high-speed vortex stage 1 rotor disk 7 facing upward facilitates the loading and operation of subsequent disassembly tools. The support frame provides stable support for the assembly, preventing the assembly from shaking or shifting during the disassembly process. The use of slings ensures the stable placement of the assembly, preventing the assembly from being collided or damaged, and providing a guarantee for the smooth progress of subsequent disassembly steps.

[0033] Next, the support plate 1 and the base 3 are concentrically fixed into a whole using a fixing connector. Specifically, two M6 screws 4 are connected to the two M6 threaded holes on the end face of the base 3 through the two Ф9 through holes on the top of the support plate 1, making the support plate 1 and the base 3 a whole and ensuring that the support plate 1 and the base 3 are concentric. It can be explained that the fixing connection of the screws 4 can quickly realize the assembly of the support plate 1 and the base 3 and ensure that the two are concentric, avoiding uneven force due to the two being out of concentricity during the subsequent disassembly process, thereby preventing damage to the spacer ring 6 and the high vortex first stage rotor disk 7. At the same time, the assembly method is simple and convenient, which can improve the disassembly efficiency.

[0034] Then, the fixed support plate 1 and base 3 are installed into the assembly, so that the annular groove of the support plate 1 fits against the end face of the spacer 6, and the base 3 fits against the end face of the high-pressure turbine first-stage rotor disk 7. The support plate 1 and the spacer 6 are positioned and connected by the positioning connector. In this embodiment, the base 3 is embedded in the annular cavity formed by the spacer 6 and the high-pressure turbine first-stage rotor disk 7 to achieve end face contact and protection. Specifically, the entire support plate 1 and base 3 are installed into the high-pressure turbine rotor box structure. The bottom annular groove of the support plate 1 enters the surface of the spacer 6, so that the end face of the annular groove contacts the rear end face of the spacer. The base 3 enters the annular cavity formed by the inner surface of the spacer 6 and the high-pressure turbine first-stage rotor disk 7, so that its end face contacts the high-pressure turbine first-stage rotor disk 7. The rear end face of the first-stage rotor disk 7 contacts the plate, and then four Ф8 pins 5 are connected to the radial holes of the spacer ring 6 through the radial holes at the bottom of the support plate 1, making the entire disassembly tool and the spacer ring an integral unit. Explained, the base 3 is embedded in the annular cavity, which can further improve the fit stability between the base 3 and the first-stage rotor disk 7 of the high vortex, and enhance the protection effect. The annular groove of the support plate 1 fits with the end face of the spacer ring 6, and combined with the positioning connection of the pins 5, it can ensure the stable connection between the disassembly tool and the spacer ring 6, avoid detachment during the disassembly process, and provide a guarantee for the subsequent transmission of tensile force. At the same time, this installation method can accurately adapt to the internal space of the box structure, solving the problems of traditional tools being difficult to install and inaccurate positioning.

[0035] Finally, the top pressure component is screwed into the threaded hole of the support plate 1 and abuts against the base 3. Tightening the top pressure component generates axial tension, causing the spacer 6 to separate from the high-vortex first-stage rotor disk 7. In this embodiment, multiple top pressure components are tightened simultaneously and evenly to ensure that the tension of the support plate 1 on the spacer 6 is evenly distributed. Specifically, four M10 top pressure bolts 2 are screwed into the four M10 threaded through holes on the top of the support plate 1. After contacting the end face of the base 3, they are tightened with a regular wrench. As the top pressure bolts 2 are tightened, a great pressure is generated between the top pressure bolts 2 and the high-vortex first-stage rotor disk 7. Due to the action and reaction forces, the support plate 1 will simultaneously generate the same amount of tension on the spacer 6. By continuously tightening the top-pressure bolt 2 with a wrench, the spacer 6 can be separated from the high-vortex first-stage rotor disk 7. Explained, the simultaneous and even tightening of the top-pressure bolt 2 can make the reaction force on the support plate 1 evenly distributed, thereby making the tension on the spacer 6 even, avoiding deformation and damage to the spacer 6 due to uneven force. The threaded drive method can realize the slow adjustment of tension, which is convenient for controlling the separation process and preventing damage to components due to excessive tension. At the same time, the top-pressure bolt 2 indirectly abuts against the high-vortex first-stage rotor disk 7 through the base 3, further avoiding direct contact between the top-pressure bolt 2 and the high-vortex first-stage rotor disk 7, effectively protecting the high-vortex first-stage rotor disk 7.

[0036] In this embodiment, after the disassembly tool is assembled, since the four top-pressing bolts 2 on the top of the support plate 1 are evenly distributed and the support plate 1 and the base 3 are concentric, the tension force exerted by the support plate 1 on the spacer 6 during the disassembly process is evenly distributed, and there will be no tilting or deflection during the disassembly process. Since the radial hole of the spacer 6 is fixed to the support plate 1 by four evenly distributed pins 5, there will be no single-point stress during the disassembly process, which plays a good protective role for the spacer 6. Since the base 3 is placed on the rear end face of the high-vortex first-stage rotor disk 7, the top-pressing bolts 2 are prevented from contacting the high-vortex first-stage rotor disk 7, so the high-vortex first-stage rotor disk 7 will not be damaged during the disassembly process. The overall disassembly method is simple and efficient to operate, and the disassembly tool has a reasonable structure and strong practicality. It can effectively improve the disassembly efficiency and quality of the spacer in the box structure and reduce the component wear during the disassembly process.

[0037] In summary, compared with other decomposition methods, the decomposition tools and methods provided by this invention have the following advantages: This invention achieves separation by pre-fixing the support plate and base concentrically and integrating them into the assembly. Precise alignment is ensured through end-face contact and radial positioning. Separation is then achieved by screwing in a top-pressing component that abuts against the base, generating controllable axial tension. This stable, concentric rigid structure replaces the traditional, unstable manual operation, transforming impact force into a uniform, stable axial tension. The direct contact of the base with the rotor disc end face provides protection, effectively preventing lateral load distribution and stress concentration. This tool and method enable rapid, efficient, and non-destructive disassembly of thin-walled flexible spacers, completely solving the problems of difficult force application, easy misalignment, low efficiency, and easy damage to parts in traditional processes. It significantly reduces the risk of spacer failure and rotor disc rework, thus ensuring maintenance progress and saving repair costs. This disassembly tool is compact, lightweight, reliably positioned, easy to use, simple to maintain, and has low manufacturing costs. The application of this disassembly tool provides a convenient, time-saving, labor-saving, safe, and reliable process.

[0038] The above embodiments are merely one of the implementation methods for achieving the technical solution of the present invention. The scope of protection claimed by the present invention is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention.

Claims

1. A box-type internal spacer disassembly tool, characterized in that, Includes a support plate (1), a top pressing component, a base (3), a fixing connector, and a positioning connector; The support plate (1) is a cylindrical structural component with a positioning hole and a threaded hole at the top, and an annular groove and a radial through hole in the circumference at the bottom. The base (3) is a hollow cylindrical structure and is concentrically fixed to the support plate (1) through a fixed connector; The top pressing member forms a threaded transmission connection with the threaded hole of the support plate (1), and the end of the top pressing member abuts against the end face of the base (3); the positioning connector passes through the radial through hole of the support plate (1) and is used to form a radial positioning connection with the spacer (6).

2. The box-type internal spacer disassembly tool according to claim 1, characterized in that, The top of the support plate (1) has two through holes for positioning and four evenly distributed threaded through holes for threaded holes. The pitch circles of the positioning holes and the threaded holes are concentric with the center of the support plate (1). The multiple radial through holes at the bottom of the support plate (1) are evenly distributed.

3. The box-type internal spacer disassembly tool according to claim 1, characterized in that, The base (3) has a threaded hole on its end face, and the fixing connector is a screw (4). The screw (4) passes through the positioning hole of the support plate (1) and is fixedly engaged with the connecting thread hole of the base (3). The base (3) is used to abut against the end face of the high vortex stage 1 rotor disk (7) for protection.

4. The box-type internal spacer disassembly tool according to claim 1, characterized in that, The top pressure component uses multiple evenly distributed top pressure bolts (2) to apply top pressure to the base (3) through threaded transmission, so as to drive the support plate (1) to generate axial tension.

5. The box-type internal spacer disassembly tool according to claim 1, characterized in that, The positioning connector uses multiple evenly distributed pins (5), which, after being installed, achieve radial positioning and circumferential fixation of the support plate (1) and the spacer (6).

6. A method for disassembling the inner spacer of a box-type structure, based on the disassembly tool described in any one of claims 1-5, characterized in that, include: Position and place the assembly of the high-vortex first-stage rotor disk (7) and spacer (6); The support plate (1) and the base (3) are concentrically fixed into a whole by means of a fastener; The fixed support plate (1) and base (3) are installed into the assembly, so that the annular groove of the support plate (1) fits with the end face of the spacer (6) and the base (3) fits with the end face of the high vortex first stage rotor disk (7). The support plate (1) and spacer (6) are positioned and connected by the positioning connector. Screw the top pressure component into the threaded hole of the support plate (1) and abut against the base (3). Tighten the top pressure component to generate axial tension, so that the spacer (6) separates from the high vortex stage 1 rotor disk (7).

7. The method for disassembling the inner spacer of a box-type structure according to claim 6, characterized in that, During the process of positioning and placing the assembly of the high-vortex first-stage rotor disk (7) and the spacer (6), the assembly is placed on the support frame with the rear end of the high-vortex first-stage rotor disk (7) facing upward.

8. The method for disassembling the inner spacer of a box-type structure according to claim 6, characterized in that, During the process of installing the fixed support plate (1) and base (3) into the assembly, the base (3) is embedded in the annular cavity formed by the spacer (6) and the high-vortex first-stage rotor disk (7) to achieve end face contact and protection.

9. The method for disassembling the inner spacer of a box-type structure according to claim 6, characterized in that, During the process of generating axial tension by tightening the top pressure component, multiple top pressure components are tightened simultaneously and evenly to make the tension of the support plate (1) on the spacer (6) evenly distributed.

10. The method for disassembling the inner spacer of a box-type structure according to claim 6, characterized in that, During the process of generating axial tension by the tightening top pressure component, the top pressure component indirectly abuts against the high-vortex first-stage rotor disk (7) through the base (3).

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