A low pressure turbine disassembly tool

Abstract

The application provides a low-pressure turbine dismounting tool, and relates to the technical field of aero-engine tools.The low-pressure turbine dismounting tool comprises a low-pressure rotor-stator dismounting device and a low-pressure turbine shaft dismounting device which are detachably connected.When the low-pressure rotor-stator dismounting device and the low-pressure turbine shaft dismounting device are assembled, the horizontal dismounting requirement of the low-pressure turbine can be met, and when the low-pressure rotor-stator dismounting device and the low-pressure turbine shaft dismounting device are disassembled, the separate placement requirement of the rotor-stator unit and the low-pressure turbine shaft can be met.The low-pressure rotor-stator dismounting device can adjust the rotor-stator unit between the horizontal state and the vertical state.When the rotor-stator unit is in the horizontal state, the horizontal dismounting of the low-pressure turbine can be carried out, and when the rotor-stator unit is in the vertical state, the vertical dismounting of the low-pressure turbine can be carried out.In this way, the low-pressure turbine dismounting tool can meet various requirements in the low-pressure turbine dismounting process, reduce the types of special tools, and reduce the process cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aero-engine tooling, in particular to a low-pressure turbine dismounting and mounting tool. BACKGROUND

[0002] The low-pressure turbine of an aero-engine is an important component of the aero-engine, which is composed of a rotor-stator unit and a low-pressure turbine shaft. The connection position of the low-pressure turbine shaft and the rotor-stator unit is located inside the low-pressure turbine rotor-stator disc cavity. The rotor-stator unit is composed of multiple rotors, multiple stators and a casing. The rotors are connected by bolts, and the stators are connected to the casing by clamping slots. The rotors and stators are relatively independent, and the rotors and stators can be positioned only after the low-pressure turbine is installed on the aero-engine.

[0003] At present, the low-pressure turbine is mostly dismounted and mounted by a vertical assembly method. For example, the invention patent with the application number CN201910613809.4 and the name of "Vertical low-pressure turbine unit assembly device and assembly method" proposes a vertical assembly device and method to realize the vertical assembly of each unit of the low-pressure turbine. Since the low-pressure turbine shaft is as long as 2000mm, the vertical assembly requires a high factory height and a special ladder rack, which has many safety hazards for climbing work. In addition, the low-pressure turbine is located inside the vertical assembly rack, and the connection position of the low-pressure turbine shaft and the rotor-stator is located inside the rotor-stator disc cavity. Therefore, it is inconvenient to operate and the efficiency is low due to the narrow space when installing the low-pressure turbine shaft and the rotor-stator bolt and nut.

[0004] In order to improve the above problems, some horizontal assembly devices for assembling the low-pressure turbine by a horizontal assembly method have appeared. For example, the patent application with the application number CN201510612569.8 and the name of "Butt joint installation device". However, the current low-pressure turbine assembly device has a single function when assembling the low-pressure turbine, which is difficult to meet the various needs in the low-pressure turbine assembly process. SUMMARY

[0005] The purpose of the present application is to provide a low-pressure turbine dismounting and mounting tool which can meet the various use requirements in the low-pressure turbine assembly process.

[0006] The embodiments of the present application can be implemented in the following ways:

[0007] A low-pressure turbine dismounting tool, comprising a low-pressure rotor-stator dismounting device, the low-pressure rotor-stator dismounting device comprising a low-pressure rotor-stator support frame and a low-pressure rotor-stator fixing clamp, the low-pressure rotor-stator fixing clamp comprising two oppositely arranged rotary supports for being mounted on the radial two sides of a rotor-stator unit body, the rotary supports being used for rotary cooperation with the low-pressure rotor-stator support frame to rotatably support the rotor-stator unit body on the low-pressure rotor-stator support frame, so that the rotor-stator unit body is adjusted between a horizontal state and a vertical state; and

[0008] A low-pressure turbine shaft dismounting device for horizontally supporting a low-pressure turbine shaft; the low-pressure turbine shaft dismounting device is detachably connected with the low-pressure rotor-stator dismounting device.

[0009] Optionally, the rotary supports comprise a mounting seat, a first support shaft and a second support shaft, the first support shaft and the second support shaft being mounted side by side on the mounting seat, the first support shaft and the second support shaft being used for rotary cooperation with the low-pressure rotor-stator support frame, so that the low-pressure rotor-stator fixing clamp can rotate relative to the low-pressure rotor-stator support frame around the axis of the first support shaft or the axis of the second support shaft;

[0010] Wherein, when the first support shaft and the second support shaft are both supported on the low-pressure rotor-stator support frame, the rotor-stator unit body is in the horizontal state; when the first support shaft is supported on the low-pressure rotor-stator support frame and the second support shaft is located on the upper side of the first support shaft, the rotor-stator unit body is in a first vertical state; when the second support shaft is supported on the low-pressure rotor-stator support frame and the first support shaft is located on the upper side of the second support shaft, the rotor-stator unit body is in a second vertical state.

[0011] Optionally, the first support shaft is provided with a first positioning hole and a second positioning hole, and the low-pressure rotor-stator support frame is provided with a third positioning hole; the low-pressure rotor-stator fixing clamp further comprises a positioning pin, the first positioning hole and the second positioning hole are used for cooperation with the third positioning hole through the positioning pin, so as to limit the relative position of the first support shaft and the low-pressure rotor-stator support frame;

[0012] Wherein, when the positioning pin is inserted into the first positioning hole and the third positioning hole, the low-pressure rotor-stator fixing clamp supports the rotor-stator unit body in the horizontal state; when the positioning pin is inserted into the second positioning hole and the third positioning hole, the low-pressure rotor-stator fixing clamp supports the rotor-stator unit body in the first vertical state.

[0013] Optionally, the second support shaft is provided with a fourth positioning hole and a fifth positioning hole, and the low-pressure rotor-stator support frame is provided with a sixth positioning hole; the low-pressure rotor-stator fixing clamp further comprises a positioning pin, the fourth positioning hole and the fifth positioning hole are respectively used for cooperating with the sixth positioning hole through the positioning pin to limit the relative position of the second support shaft and the low-pressure rotor-stator support frame.

[0014] When the positioning pin is inserted into the fourth positioning hole and the sixth positioning hole, the low-pressure rotor-stator fixing clamp supports the rotor-stator unit body in the horizontal state; when the positioning pin is inserted into the fifth positioning hole and the sixth positioning hole, the low-pressure rotor-stator fixing clamp supports the rotor-stator unit body in the second vertical state.

[0015] Optionally, the low-pressure rotor-stator fixing clamp further comprises a fixing disc and a rotor fixing assembly, the fixing disc is annular, and the fixing disc is used for fixedly connecting with the rear mounting edge of the rotor-stator unit body; the rotor fixing assembly is fixedly connected to the inner edge of the fixing disc, and the rotor fixing assembly is used for fixedly connecting with the rotor of the rotor-stator unit body; the two rotating supports are fixedly connected with the fixing disc and are oppositely arranged on the radial sides of the fixing disc.

[0016] Optionally, the rotor fixing assembly comprises a support ring and a plurality of hook blocks; the support ring comprises a ring pipe portion, a first connecting ring portion and a second connecting ring portion, the first connecting ring portion and the second connecting ring portion are arranged on the axial two sides of the ring pipe portion respectively, the first connecting ring portion extends outward in the radial direction of the ring pipe portion, and the first connecting ring portion is fixedly connected with the inner edge of the fixing disc; the second connecting ring portion extends inward in the radial direction of the ring pipe portion; the plurality of hook blocks are arranged on the second connecting ring portion in the circumferential direction of the support ring, and the plurality of hook blocks are respectively used for being clamped and fixed with the last-stage turbine disc hub of the rotor-stator unit body.

[0017] Optionally, the rotor fixing assembly further comprises an adjusting bolt and a locking bolt, the locking bolt is screwed with the fixing disc through the first connecting ring portion to lock and fix the support ring on the fixing disc; the adjusting bolt is screwed with the first connecting ring portion, and is used for abutting against the axial end face of the fixing disc to adjust the axial position of the support ring relative to the fixing disc.

[0018] Optionally, the low-pressure turbine shaft dismounting device comprises a frame, a horizontal sliding assembly, and a position adjusting assembly, the frame is detachably connected with the low-pressure rotor-stator dismounting device, the position adjusting assembly is installed on the frame through the horizontal sliding assembly, the position adjusting assembly is used for horizontally supporting the low-pressure turbine shaft and adjusting the position of the low-pressure turbine shaft to align the low-pressure turbine shaft with the supporting cone wall of the rotor-stator unit body, and the horizontal sliding assembly is used for sliding the position adjusting assembly relative to the frame to make the low-pressure turbine shaft close to or away from the rotor-stator unit body to meet the dismounting requirement.

[0019] Optionally, the horizontal sliding assembly comprises a base and an axial sliding base, the base is fixedly installed on the frame, and a groove is arranged on the base; the position adjusting assembly is installed on the axial sliding base, and a boss is arranged below the axial sliding base, and the boss is in sliding fit with the groove.

[0020] Optionally, an axial long groove is further arranged on the base, and a plurality of limiting pins are arranged on the side edge of the boss, the limiting pins are in sliding fit with the axial long groove to limit the boss in the groove.

[0021] Optionally, the position adjusting assembly comprises a height adjusting structure, and the height adjusting structure is used for adjusting the height position of the low-pressure turbine shaft.

[0022] Optionally, the height adjusting structure comprises a supporting seat and a wedge-shaped sliding block, the supporting seat is provided with a first abutting inclined surface and a second abutting inclined surface, the wedge-shaped sliding block is installed on the horizontal sliding assembly and has a third abutting inclined surface in abutting fit with the first abutting inclined surface, the horizontal sliding assembly is provided with a fourth abutting inclined surface in abutting fit with the second abutting inclined surface, and the wedge-shaped sliding block is used for moving the supporting seat up and down to adjust the height position of the low-pressure turbine shaft by moving close to or away from the fourth abutting inclined surface.

[0023] Optionally, the position adjusting assembly further comprises a screw rod, the screw rod is in threaded connection with the wedge-shaped sliding block, and the screw rod is used for moving the wedge-shaped sliding block close to or away from the fourth abutting inclined surface by rotating the screw rod.

[0024] The position adjusting assembly further comprises a stop ring, the stop ring is rotationally arranged on the screw rod, and the stop ring is fixedly connected with the supporting seat to limit the movement of the screw rod along the axial direction of the screw rod relative to the supporting seat.

[0025] Optionally, the position adjusting assembly further comprises an angle adjusting structure, the angle adjusting structure is used for rotationally supporting the low-pressure turbine shaft to adjust the angle position of the low-pressure turbine shaft by rotating the low-pressure turbine shaft along the axial direction of the low-pressure turbine shaft.

[0026] Optionally, the angle adjusting structure comprises two support assemblies, which are arranged on the height adjusting structure in a spaced manner and used for supporting two ends of the low-pressure turbine shaft.

[0027] The support assembly comprises a top support wheel and two bottom support wheels, and the top support wheel and the two bottom support wheels clamp the low-pressure turbine shaft in a three-point manner.

[0028] Optionally, the support assembly further comprises a pressing frame, the top support wheel is rotatably arranged on the pressing frame, and the pressing frame is detachably connected with the height adjusting structure by means of bolts.

[0029] Optionally, the low-pressure turbine dismounting tool further comprises a connecting beam, two ends of the connecting beam are detachably connected with the low-pressure turbine shaft dismounting device and the low-pressure rotor dismounting device respectively.

[0030] The low-pressure turbine dismounting tool provided by the embodiments of the present application has the following beneficial effects:

[0031] The low-pressure turbine dismounting tool provided by the embodiments of the present application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0032] The above features and advantages of the present application will be better understood after reading the detailed description of the embodiments of the present application in conjunction with the following drawings, in which the components are not necessarily drawn to scale and components of similar or identical function or structure are designated by the same or similar reference characters throughout the drawings.

[0033] Figure 1 A structural schematic diagram of a low-pressure turbine according to an aspect of the present application is shown;

[0034] Figure 2 A structural schematic diagram of a low-pressure turbine when horizontally assembled by a low-pressure turbine dismounting tool according to an aspect of the present application is shown;

[0035] Figure 3 A cross-sectional structural schematic diagram of a low-pressure turbine when horizontally assembled by a low-pressure turbine dismounting tool according to an aspect of the present application is shown;

[0036] Figure 4 A structural schematic diagram of a low-pressure rotor-stator unit body when supported in a horizontal state by a low-pressure rotor-stator dismounting device according to an aspect of the present application is shown;

[0037] Figure 5 A structural schematic diagram of a low-pressure rotor-stator unit body when supported in a first vertical state by a low-pressure rotor-stator dismounting device according to an aspect of the present application is shown;

[0038] Figure 6 A structural schematic diagram of a low-pressure rotor-stator unit body when supported in a second vertical state by a low-pressure rotor-stator dismounting device according to an aspect of the present application is shown;

[0039] Figure 7 A structural schematic diagram of a low-pressure rotor-stator fixing clamp in a low-pressure turbine dismounting tool according to an aspect of the present application is shown;

[0040] Figure 8 A partial structural cross-sectional schematic diagram of a low-pressure rotor-stator fixing clamp clamping a rotor-stator unit body according to an aspect of the present application is shown;

[0041] Figure 9 An exploded structural schematic diagram of a low-pressure turbine shaft dismounting device according to an aspect of the present application is shown;

[0042] Figure 10 A cross-sectional structural schematic diagram of a low-pressure turbine shaft dismounting device according to an aspect of the present application is shown.

[0043] Reference numerals:

[0044] 10 - low pressure turbine dismounting tool; 100 - low pressure rotor-stator dismounting device; 110 - low pressure rotor-stator support frame; 120 - low pressure rotor-stator fixing clamp; 121 - fixing disc; 1211 - mounting part; 122 - support ring; 1221 - first connecting ring part; 1222 - ring tube part; 1223 - second connecting ring part; 123 - hook block; 124 - adjusting bolt; 125 - locking bolt; 126 - rotating support; 127 - first support shaft; 128 - second support shaft; 129 - first positioning hole; 131 - second positioning hole; 132 - fourth positioning hole; 133 - fifth positioning hole; 134 - positioning plate; 135 - mounting seat; 200 - low pressure turbine shaft dismounting device; 210 - frame; 211 - moving wheel; 220 - horizontal sliding assembly; 221 - base; 222 - groove; 223 - axial long slot; 224 - axial sliding base; 225 - boss; 226 - limiting pin; 227 - fourth abutting inclined surface; 228 - baffle part; 230 - pose adjusting assembly; 231 - support seat; 232 - first abutting inclined surface; 233 - second abutting inclined surface; 234 - wedge-shaped sliding block; 235 - third abutting inclined surface; 236 - screw rod; 237 - blocking ring; 238 - support assembly; 239 - top support wheel; 241 - bottom support wheel; 242 - pressing frame; 300 - connecting beam;

[0045] 20 - low pressure turbine; 21 - rotor-stator unit body; 22 - casing; 23 - front mounting edge; 24 - rear mounting edge; 25 - rotor; 26 - stator; 27 - support cone wall; 28 - low pressure turbine shaft. DETAILED DESCRIPTION

[0046] The application will be described in greater detail with reference to the accompanying drawings and specific embodiments. Note that the aspects described below in conjunction with the accompanying drawings and specific embodiments are merely exemplary and should not be understood as any limitation on the scope of protection of the application.

[0047] In the description of the application, it should be noted that if the terms "upper", "lower", "inner", "outer", "vertical" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product of the application is usually placed, and not indicating or implying that the device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the application.

[0048] At the same time, it should be noted that if the terms "first", "second" and the like appear, they are only used for differentiation description, and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present application, it is also necessary to point out that, unless otherwise explicitly specified or limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixed connection, can be integrally connected, or can be detachably connected; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, or the internal connection of two elements, etc. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] Figure 1 The structural schematic diagram of the low-pressure turbine 20 provided in the present embodiment is shown in Figure 1 The low-pressure turbine 20 includes a rotor-stator unit 21 and a low-pressure turbine shaft 28, which is a long rod-shaped shaft structure, one end of which is fixedly connected to the support cone wall 27 of the rotor-stator unit 21 through bolts, and the mounting position is located inside the disc cavity of the rotor-stator unit 21. The rotor-stator unit 21 includes a casing 22, a plurality of rotors 25 and a plurality of stators 26. The rotor 25 includes a turbine disc and a blade, and the rotors 25 are connected through bolts. The stators 26 are installed on the casing 22 in the form of a clamping groove. Before the low-pressure turbine 20 is installed on the aero-engine, the rotors 25 and the stators 26 are relatively independent, i.e. in the state shown in Figure 1 , there is no radial positioning and axial positioning between the stators 26 and the rotors 25, and the rotors 25 and the stators 26 can be positioned only after the low-pressure turbine 20 is installed on the aero-engine. At the same time, in Figure 1 , the mounting edge of the bottom of the casing 22 is the front mounting edge 23, and correspondingly, the mounting edge of the top of the casing 22 is the rear mounting edge 24.

[0051] Figure 2 The structural schematic diagram of the low-pressure turbine dismounting tool 10 provided in the present embodiment when horizontally assembling the low-pressure turbine 20 is shown in Figure 3 The cross-sectional structural schematic diagram of the low-pressure turbine dismounting tool 10 provided in the present embodiment when horizontally assembling the low-pressure turbine 20 is shown in Figure 4 The structural schematic diagram of the low-pressure rotor-stator dismounting device 100 provided in the present embodiment when supporting the rotor-stator unit 21 in a horizontal state is shown in Figure 5 The structural schematic diagram of the low-pressure rotor-stator dismounting device 100 provided in the present embodiment when supporting the rotor-stator unit 21 in a first vertical state is shown in Figure 6 The structural schematic diagram of the low-pressure rotor-stator dismounting device 100 provided in the present embodiment when supporting the rotor-stator unit 21 in a second vertical state is shown in Figures 1-6The present embodiment provides a low-pressure turbine dismounting tool 10, which comprises a low-pressure rotor-stator dismounting device 100 and a low-pressure turbine shaft dismounting device 200, and the low-pressure turbine shaft dismounting device 200 is used for horizontally supporting the low-pressure turbine shaft 28. The low-pressure rotor-stator dismounting device 100 and the low-pressure turbine shaft dismounting device 200 are detachably connected, and when the low-pressure rotor-stator dismounting device 100 and the low-pressure turbine shaft dismounting device 200 are assembled, the horizontal assembly requirement of the low-pressure turbine 20 can be met, and when the low-pressure rotor-stator dismounting device 100 and the low-pressure turbine shaft dismounting device 200 are disassembled, the separate placement requirement of the rotor-stator unit body 21 and the low-pressure turbine shaft 28 can be met. The low-pressure rotor-stator dismounting device 100 comprises a low-pressure rotor-stator support frame 110 and a low-pressure rotor-stator fixing clamp 120, and the low-pressure rotor-stator fixing clamp 120 comprises two rotating support members 126 which are oppositely arranged and are used for being installed on the two radial sides of the rotor-stator unit body 21. The rotating support members 126 are used for being rotationally matched with the low-pressure rotor-stator support frame 110, so as to rotationally support the rotor-stator unit body 21 on the low-pressure rotor-stator support frame 110, and the rotor-stator unit body 21 can be adjusted between the horizontal state and the vertical state. On one hand, when the rotor-stator unit body 21 is in the horizontal state, the horizontal assembly of the low-pressure turbine 20 can be carried out, and when the rotor-stator unit body 21 is in the vertical state, the vertical assembly of the low-pressure turbine 20 can be carried out. On the other hand, when the low-pressure rotor-stator dismounting device 100 is used alone and the rotor-stator unit body 21 is in the vertical state, the measurement and inspection of the rotor-stator unit body 21 can be carried out. In this way, the low-pressure turbine dismounting tool 10 can meet the various requirements in the dismounting process of the low-pressure turbine 20, reduce the types of special tools, and help to reduce the process cost. Moreover, the structure can also realize the single-crane overturning work of the low-pressure turbine 20 in use, and reduce the requirement for the workshop environment during the off-site maintenance of the low-pressure turbine 20.

[0052] Further, the low-pressure turbine dismounting tool 10 further comprises a connecting beam 300, and the two ends of the connecting beam 300 are detachably connected with the low-pressure turbine shaft dismounting device 200 and the low-pressure rotor-stator dismounting device 100 respectively. In this way, the detachable connection between the low-pressure turbine shaft dismounting device 200 and the low-pressure rotor-stator dismounting device 100 is realized, and meanwhile, when the low-pressure turbine shaft dismounting device 200 and the low-pressure rotor-stator dismounting device 100 are used alone, the structure at the protruding connecting beam 300 can be avoided from affecting the use. It can be understood that in other embodiments, the connecting beam 300 can also be arranged to be not detachably connected with the low-pressure turbine shaft dismounting device 200, or to be not detachably connected with the low-pressure rotor-stator dismounting device 100.

[0053] In the present embodiment, the rotating support 126 comprises a mounting seat 135, a first support shaft 127 and a second support shaft 128, the first support shaft 127 and the second support shaft 128 are installed side by side on the mounting seat 135, and the first support shaft 127 and the second support shaft 128 are both used to rotate with the low-pressure rotor-stator support frame 110, so that the low-pressure rotor-stator fixing clamp 120 can rotate relative to the low-pressure rotor-stator support around the axis of the first support shaft 127 or the axis of the second support shaft 128, so that the rotor-stator unit body 21 clamped on the low-pressure rotor-stator fixing clamp 120 can be switched between the horizontal state and the vertical state.

[0054] Specifically, when the first support shaft 127 and the second support shaft 128 are both supported on the low-pressure rotor-stator support frame 110 (as shown in FIG. 6A), the rotor-stator unit body 21 is in a horizontal state, that is, the axis of the rotor-stator unit body 21 extends in the horizontal direction. Figure 4 When the low-pressure rotor-stator fixing clamp 120 rotates relative to the low-pressure rotor-stator support around the axis of the first support shaft 127 from the position state as shown in FIG. 6A until the second support shaft 128 rotates to the top of the first support shaft 127 (as shown in FIG. 6B), the rotor-stator unit body 21 is in a first vertical state, at this time, the front mounting edge 23 of the casing 22 of the rotor-stator unit body 21 faces upward, and the rear mounting edge 24 faces downward. Figure 1 When the low-pressure rotor-stator fixing clamp 120 rotates relative to the low-pressure rotor-stator support around the axis of the second support shaft 128 from the position state as shown in FIG. 6B until the first support shaft 127 rotates to the top of the second support shaft 128 (as shown in FIG. 6C), the rotor-stator unit body 21 is in a second vertical state, at this time, the front mounting edge 23 of the casing 22 of the rotor-stator unit body 21 faces downward, and the rear mounting edge 24 faces upward. Figure 5 When the low-pressure rotor-stator fixing clamp 120 rotates relative to the low-pressure rotor-stator support around the axis of the second support shaft 128 from the position state as shown in FIG. 6B until the first support shaft 127 rotates to the top of the second support shaft 128 (as shown in FIG. 6C), the rotor-stator unit body 21 is in a second vertical state, at this time, the front mounting edge 23 of the casing 22 of the rotor-stator unit body 21 faces downward, and the rear mounting edge 24 faces upward. Figure 1 When the low-pressure rotor-stator fixing clamp 120 rotates relative to the low-pressure rotor-stator support around the axis of the second support shaft 128 from the position state as shown in FIG. 6B until the first support shaft 127 rotates to the top of the second support shaft 128 (as shown in FIG. 6C), the rotor-stator unit body 21 is in a second vertical state, at this time, the front mounting edge 23 of the casing 22 of the rotor-stator unit body 21 faces downward, and the rear mounting edge 24 faces upward. Figure 6 When the low-pressure rotor-stator fixing clamp 120 rotates relative to the low-pressure rotor-stator support around the axis of the second support shaft 128 from the position state as shown in FIG. 6B until the first support shaft 127 rotates to the top of the second support shaft 128 (as shown in FIG. 6C), the rotor-stator unit body 21 is in a second vertical state, at this time, the front mounting edge 23 of the casing 22 of the rotor-stator unit body 21 faces downward, and the rear mounting edge 24 faces upward.

[0055] Further, the first support shaft 127 is further provided with a first positioning hole 129 and a second positioning hole 131, and the low-pressure rotor stator support frame 110 is further provided with a third positioning hole (not shown in the figure). The low-pressure rotor stator fixing clamp 120 further comprises a positioning pin (not shown in the figure). When the first positioning hole 129 is aligned with the third positioning hole, and the positioning pin is inserted into the first positioning hole 129 and the third positioning hole, the relative position between the first support shaft 127 and the low-pressure rotor stator support frame 110 is achieved, and the first support shaft 127 is prevented from moving relative to the low-pressure rotor stator support frame 110. At this time, the low-pressure rotor stator fixing clamp 120 supports the rotor stator unit body 21 in a horizontal state. When the second positioning hole 131 is aligned with the third positioning hole, and the positioning pin is inserted into the second positioning hole 131 and the third positioning hole, the relative position between the first support shaft 127 and the low-pressure rotor stator support frame 110 is achieved, and the first support shaft 127 is prevented from moving relative to the low-pressure rotor stator support frame 110. At this time, the low-pressure rotor stator fixing clamp 120 supports the rotor stator unit body 21 in a first vertical state. If subsequent adjustment of the position of the rotor stator unit body 21 is needed, the positioning pin can be removed. In the embodiment, the first support shaft 127 is uniformly provided with four positioning holes around the axis, one of which is the first positioning hole 129, and the other one of which is the second positioning hole 131.

[0056] Further, the first support shaft 127 comprises a shaft body and two positioning plates 134 which are arranged at one end of the shaft body. The positioning holes are arranged on the two positioning plates 134, and when the first support shaft 127 is matched with the low-pressure rotor stator support frame 110, the part of the low-pressure rotor stator support frame 110 provided with the third positioning hole is clamped between the two positioning plates 134.

[0057] In the embodiment, the structure of the first support shaft 127 is consistent with that of the second support shaft 128. Correspondingly, the second support shaft 128 is provided with a fourth positioning hole 132 and a fifth positioning hole 133, and the low-pressure rotor stator support frame 110 is further provided with a sixth positioning hole (not shown in the figure). When the fourth positioning hole 132 is aligned with the sixth positioning hole, and the positioning pin is inserted into the fourth positioning hole 132 and the sixth positioning hole, the relative position between the second support shaft 128 and the low-pressure rotor stator support frame 110 is achieved, and the second support shaft 128 is prevented from moving relative to the low-pressure rotor stator support frame 110. At this time, the low-pressure rotor stator fixing clamp 120 supports the rotor stator unit body 21 in a horizontal state. When the fifth positioning hole 133 is aligned with the sixth positioning hole, and the positioning pin is inserted into the fifth positioning hole 133 and the sixth positioning hole, the relative position between the second support shaft 128 and the low-pressure rotor stator support frame 110 is achieved, and the second support shaft 128 is prevented from moving relative to the low-pressure rotor stator support frame 110. At this time, the low-pressure rotor stator fixing clamp 120 supports the rotor stator unit body 21 in a second vertical state.

[0058] It should be noted that, in this embodiment, in order to be able to position the rotor-stator unit 21 in a horizontal state, a first vertical state or a second vertical state by the low-pressure rotor-stator fixing clamp 120, the first support shaft 127 and the second support shaft 128 are limited between the low-pressure rotor-stator support frame 110 by the positioning pin. It can be understood that in other embodiments, other limiting structures can also be used.

[0059] Figure 7 A structural schematic diagram of the low-pressure turbine dismounting tool 10 provided in this embodiment is shown in FIG. 4, which shows the low-pressure rotor-stator fixing clamp 120. Figure 8 A partial structural cross-sectional schematic diagram of the low-pressure rotor-stator fixing clamp 120 provided in this embodiment is shown in FIG. 5, which shows the low-pressure rotor-stator fixing clamp 120 clamping the rotor-stator unit 21. Please refer to FIG. 4 and FIG. 5. Figures 1-8 In this embodiment, the low-pressure rotor-stator fixing clamp 120 further comprises a fixing disc 121 and a rotor 25 fixing assembly. The fixing disc 121 is generally annular in structure and is fixedly connected with the rear mounting edge 24 of the casing 22, thereby achieving fixation of the stator 26 in the rotor-stator unit 21. The rotor 25 fixing assembly is fixedly connected to the inner edge of the fixing disc 121 and is used to be fixedly connected with the rotor 25 of the rotor-stator unit 21, thereby achieving fixation of the rotor 25. In this way, the relatively independent rotor-stator is fixed into one body by the low-pressure rotor-stator fixing clamp 120. The two rotating support members 126 are fixedly connected with the fixing disc 121 and are oppositely arranged on the radial sides of the fixing disc 121.

[0060] Specifically, the fixing disc 121 is provided with mounting portions 1211 protruding radially outward in the circumferential direction. The mounting portions 1211 are fixedly connected with the rear mounting edge 24 by bolts. In this embodiment, the fixing disc 121 has four mounting portions 1211, which are uniformly distributed, i.e. the adjacent mounting portions 1211 are 90° apart. The two rotating support members 126 are fixedly connected with the two oppositely arranged mounting portions 1211.

[0061] Further, the rotor 25 fixing assembly comprises a support ring 122 and a plurality of hook blocks 123. The support ring 122 comprises a ring tube portion 1222, a first connecting ring portion 1221 and a second connecting ring portion 1223. The first connecting ring portion 1221 and the second connecting ring portion 1223 are respectively arranged at the two axial sides of the ring tube portion 1222. The first connecting ring portion 1221 extends outwardly along the radial direction of the ring tube portion 1222, and the second connecting ring portion 1223 extends inwardly along the radial direction of the ring tube portion 1222. The first connecting ring portion 1221 is fixedly connected with the inner edge of the fixing disc 121. The ring tube portion 1222 extends into the stator-rotor unit body 21 along the axial direction of the fixing disc 121. Thus, the second connecting ring portion 1223 extends into the stator-rotor unit body 21. The plurality of hook blocks 123 are arranged on the second connecting ring portion 1223 along the circumferential direction of the support ring 122. The plurality of hook blocks 123 are respectively used for being clamped and fixed with the last turbine disc hub of the stator-rotor unit body 21, so as to realize the concentric arrangement of the rotor 25 and the stator 26.

[0062] Specifically, the hook block 123 is in F shape. Before the rotor 25 is installed, the hook block 123 is arranged towards the axis. After the rotor 25 is installed, the hook block 123 is rotated, so that the hook block 123 is arranged towards the direction away from the axis, thereby clamping the disc hub and realizing the fixation of the rotor 25 (as shown in Figure 8 ).

[0063] Further, the rotor 25 fixing assembly further comprises an adjusting bolt 124 and a locking bolt 125. The locking bolt 125 is screwed with the fixing disc 121 through the first connecting ring portion 1221, so as to lock and fix the support ring 122 on the fixing disc 121. The adjusting bolt 124 is screwed with the first connecting ring portion 1221, and is used for abutting against the axial end surface of the fixing disc 121, so as to adjust the axial position (i.e. the up-down direction position in Figure 8 ) of the support ring 122 relative to the fixing disc 121 through the adjusting bolt 124. Specifically, during the installation, after the axial position of the support ring 122 is adjusted to be in place through the adjusting screw, the locking bolt 125 is tightened, so as to realize the fastening between the support ring 122 and the fixing disc 121.

[0064] Figure 9 An exploded structural schematic view of the low-pressure turbine shaft dismounting and mounting device 200 provided in the embodiment is shown in Figure 10 An axial section structural schematic view of the low-pressure turbine shaft dismounting and mounting device 200 provided in the embodiment is shown in Figure 9 and Figure 10 The vehicle frame 210 is not shown in Figures 1-10In the embodiment, the low-pressure turbine shaft dismounting device 200 comprises a frame 210, a horizontal sliding assembly 220 and a pose adjusting assembly 230. The frame 210 is detachably connected with the low-pressure rotor-stator dismounting device 100, and the pose adjusting assembly 230 is installed on the base 221 through the horizontal sliding assembly 220. The pose adjusting assembly 230 is used for horizontally supporting the low-pressure turbine shaft 28 and adjusting the pose of the low-pressure turbine shaft 28, so that the low-pressure turbine shaft 28 supported on the pose adjusting assembly 230 can be aligned with the supporting conical wall 27 of the rotor-stator unit body 21, and the assembly effect is ensured. The horizontal sliding assembly 220 is used for sliding the pose adjusting assembly 230 relative to the base 221, so that the low-pressure turbine shaft 28 is close to or away from the rotor-stator unit body 21, and the dismounting requirement is met.

[0065] Specifically, the moving wheels 211 are arranged under the frame 210. In the case that the connecting beam 300 is not installed, on the one hand, the low-pressure turbine shaft dismounting device 200 can be pushed away from the low-pressure rotor-stator dismounting device 100, so as to provide sufficient space for separate use, and on the other hand, the low-pressure turbine shaft dismounting device 200 can be moved to realize the alignment of the axis of the low-pressure turbine shaft with the rotor-stator unit body 21 (left-right alignment or vertical mid-section alignment), and the docking mode is diversified, and the operation is more convenient.

[0066] Further, the horizontal sliding assembly 220 comprises a base 221 and an axial sliding seat 224. The base 221 is fixedly installed on the frame 210, and the recess 222 is arranged on the base 221. The pose adjusting assembly 230 is installed on the axial sliding seat 224, and the boss 225 is arranged below the axial sliding seat 224 and is in sliding fit with the recess 222. Specifically, the base 221 is substantially a cuboid, and the recess 222 extending along the length direction of the base 221 is arranged on the upper end face of the base 221. After the low-pressure turbine shaft 28 is installed on the low-pressure turbine shaft dismounting device 200, the axis of the low-pressure turbine shaft 28 is consistent with the extension direction of the recess 222. Thus, by applying an external force to drive the axial sliding seat 224 to slide along the extension direction of the recess 222, the low-pressure turbine shaft 28 can be driven to move along the axial direction, so as to realize the aligned installation or disengagement with the rotor-stator unit body 21.

[0067] Further, the base 221 is further provided with an axial long slot 223, and the side of the boss 225 is provided with a plurality of limiting pins 226, which are in sliding fit with the axial long slot 223 to limit the boss 225 in the groove 222. Specifically, in order to avoid the disengagement of the base 221 and the axial slide 224, a plurality of limiting pins 226 are arranged on the side of the boss 225, and the axial long slot 223 on the base 221 is arranged on the left and right sides of the base 221, and extends in parallel with the groove 222. During installation, the boss 225 is first clamped into the groove 222, and then the limiting pins 226 are connected with the boss 225 by passing through the axial long slot 223 from the outside of the base 221, and part of the limiting pins 226 is located in the axial long slot 223, thereby limiting the movement of the boss 225 relative to the base 221 in the upward and downward directions, and avoiding the upward movement of the boss 225 and the disengagement of the boss 225 from the groove 222 of the base 221.

[0068] Please continue to refer to Figures 1-10 In the embodiment, the pose adjusting assembly 230 includes a height adjusting structure, which is used to adjust the height pose of the low-pressure turbine shaft 28. Optionally, the height adjusting structure includes a support seat 231 and a wedge-shaped slide 234, the support seat 231 is provided with a first abutting inclined surface 232 and a second abutting inclined surface 233, the wedge-shaped slide 234 is installed on the horizontal sliding assembly 220 and has a third abutting inclined surface 235 in abutting fit with the first abutting inclined surface 232, the horizontal sliding assembly 220 is provided with a fourth abutting inclined surface 227 in abutting fit with the second abutting inclined surface 233, and the wedge-shaped slide 234 is used to move the support seat 231 up and down by approaching or moving away from the fourth abutting inclined surface 227 to adjust the height pose of the low-pressure turbine shaft 28.

[0069] Specifically, the support seat 231 is provided with an inverted trapezoidal protruding structure below, and the first abutting inclined surface 232 and the second abutting inclined surface 233 form two waists of the inverted trapezoidal shape, i.e., the inclination directions of the first abutting inclined surface 232 and the second abutting inclined surface 233 are opposite. The upper end surface of the axial slide 224 of the horizontal sliding assembly 220 is provided with a right trapezoidal protruding portion, which is located at one end of the length direction of the axial slide 224, the wedge-shaped slide 234 is arranged opposite to the protruding portion, and the wall surface of the protruding portion towards the wedge-shaped slide 234 is an inclined surface, which forms the fourth abutting inclined surface 227 in abutting fit with the second abutting inclined surface 233, and the wall surface of the wedge-shaped slide 234 towards the protruding portion is an inclined surface, which forms the third abutting inclined surface 235 in abutting fit with the first abutting inclined surface 232.

[0070] When the wedge-shaped slider 234 slides relative to the axial sliding seat 224 to approach or move away from the fourth abutting inclined surface 227, the distance between the third abutting inclined surface 235 and the fourth abutting inclined surface 227 decreases or increases, and correspondingly, an upward abutting force is exerted on the support seat 231 to move the support seat 231 upward, or the third abutting inclined surface 235 has a tendency to move away from the first abutting inclined surface 232, and as the wedge-shaped slider 234 moves toward the direction away from the fourth abutting inclined surface 227, the support seat 231 moves downward under the action of its own gravity. It can be understood that in other embodiments, other structures for realizing the upward and downward movement of the support seat 231 can also be used to realize the adjustment of the height position of the low-pressure turbine shaft 28.

[0071] Further, the position adjusting assembly 230 further comprises a screw rod 236, the screw rod 236 is screwed with the wedge-shaped slider 234, and the rotation of the screw rod 236 drives the wedge-shaped slider 234 to approach or move away from the fourth abutting inclined surface 227. Specifically, the upper side of the axial sliding seat 224 is further provided with two spaced apart baffle portions 228, and the protruding portion provided with the fourth abutting inclined surface 227 is located between the two baffle portions 228, and the two baffle portions 228 form a sliding groove for the wedge-shaped slider 234 to move toward the direction of approaching or moving away from the fourth abutting inclined surface 227, that is, the position of the wedge-shaped slider 234 is limited by the two baffle portions 228. The screw rod 236 is screwed with the wedge-shaped slider 234 after passing through the protruding portion, thereby forming a lead screw mechanism. Specifically, under the condition that the screw rod 236 rotates relative to the wedge-shaped slider 234, the movement of the wedge-shaped slider 234 rotating with the screw rod 236 is limited by the two baffle portions 228, so that the wedge-shaped slider 234 generates a sliding movement along the axis of the screw rod 236, and then approaches or moves away from the fourth abutting inclined surface 227.

[0072] Further, one end of the screw rod 236 is further provided with a stop ring 237, the stop ring 237 is fixed on the support seat 231 by bolts, and at the same time, the stop ring 237 can be connected with the screw rod 236 by clamping or the like, that is, it is ensured that the screw rod 236 can rotate relative to the support seat 231, and the movement of the screw rod 236 relative to the support seat 231 along the axis of the screw rod 236 is limited.

[0073] In the embodiment, the position adjusting assembly 230 further comprises an angle adjusting structure, and the low-pressure turbine shaft 28 is rotatably supported by the angle adjusting structure, so that the angle position of the low-pressure turbine shaft 28 is adjusted by the rotation of the low-pressure turbine shaft 28 around its own axis.

[0074] Optionally, the angle adjusting structure comprises two support assemblies 238, and the two support assemblies 238 are spaced apart on the height adjusting structure and are used to support the two ends of the low-pressure turbine shaft 28, that is, the low-pressure turbine shaft 28 is installed on the position adjusting assembly 230 by two supports. Specifically, the two support assemblies 238 are spaced apart on the support seat 231.

[0075] The support assembly 238 comprises a top support wheel 239 and two bottom support wheels 241, which are in a three-point clamping low-pressure turbine shaft 28 structure, so that the low-pressure turbine shaft 28 can rotate around its own axis under the action of external force, thereby realizing the adjustment of the angle position, and ensuring that the bolt holes on the low-pressure turbine shaft 28 can be aligned with the connecting holes of the support cone wall 27.

[0076] Further, the support assembly 238 further comprises a pressing frame 242, the top support wheel 239 is rotatably installed on the pressing frame 242, and the pressing frame 242 is detachably connected with the height adjusting structure by bolts. Specifically, the pressing frame 242 is in a U shape, both free ends thereof are downwardly arranged, and is detachably connected with the support base 231 by bolts, and meanwhile, the inverted U-shaped structure forms a space for the low-pressure turbine shaft 28 to pass through, and the two bottom support wheels 241 are rotatably installed on the support base 231.

[0077] The low-pressure turbine disassembling tool 10 provided by the embodiment of the present application can be used in the following manners. On the one hand, in the case that the connecting beam 300 is not installed, the low-pressure turbine shaft disassembling device 200 and the low-pressure rotor disassembling device 100 can be used separately to meet the storage requirement, and meanwhile, the low-pressure rotor disassembling device 100 can adjust the state (horizontal state and two vertical states) of the rotor unit body 21 fixed thereon to cope with various placing requirements of the low-pressure turbine rotor 20, such as the assembly operation of the rotor unit body 21 in different states, the measurement of the axial dimension and the inspection of the state of the rotor unit body 21, etc., and meanwhile, the disassembly space of the low-pressure turbine 20 is more open in the first vertical state, which is convenient for operation. Moreover, if the rotor unit body 21 is clamped in the first vertical state, the low-pressure turbine 20 can be assembled in a vertical assembly manner combined with a crane, and correspondingly, the low-pressure turbine 20 can also be disassembled vertically.

[0078] On the other hand, if the low-pressure turbine shaft disassembling device 200 and the low-pressure rotor disassembling device 100 are connected together by the connecting beam 300, the low-pressure turbine 20 can be assembled in a horizontal assembly manner, and correspondingly, the low-pressure turbine 20 can also be disassembled horizontally, and meanwhile, the low-pressure turbine shaft 28 can be pre-fixed on the rotor unit body 21 in the horizontal assembly manner, and then the rotor unit body 21 is turned upside down to the first vertical state, so that the installation of the low-pressure turbine shaft 28 and the rotor connecting bolt nut and the force limiting space are more open, which is convenient for operation. Moreover, in the horizontal assembly, the height position and the angle position of the low-pressure turbine shaft 28 can be adjusted by the low-pressure turbine shaft disassembling device 200, so as to ensure that the axis of the low-pressure turbine shaft 28 is aligned with the axis of the rotor unit body 21, and then the low-pressure turbine shaft 28 is transferred to the position for assembly with the rotor unit body 21 through axial sliding.

[0079] The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A low-pressure turbine disassembly and assembly tool, characterized in that, The low-pressure turbine disassembly and assembly tool includes: A low-pressure rotor-stator disassembly and assembly device includes a low-pressure rotor-stator support frame and a low-pressure rotor-stator fixing clamp. The low-pressure rotor-stator fixing clamp includes two opposing rotating support members, which are mounted on radial sides of a rotor-stator unit. The rotating support members are rotatably engaged with the low-pressure rotor-stator support frame to rotatably support the rotor-stator unit on the support frame, allowing the rotor-stator unit to be adjusted between a horizontal and a vertical state. A low-pressure turbine shaft disassembly and assembly device is provided for horizontally supporting the low-pressure turbine shaft; the low-pressure turbine shaft disassembly and assembly device is detachably connected to the low-pressure rotor-stator disassembly and assembly device. The rotating support includes a mounting base, a first support shaft, and a second support shaft. The first and second support shafts are mounted side by side on the mounting base. Both the first and second support shafts are used to rotate with the low-pressure rotor support frame so that the low-pressure rotor fixing clamp can rotate relative to the low-pressure rotor support frame about the axis of the first support shaft or the axis of the second support shaft. Specifically, when both the first support shaft and the second support shaft are supported on the low-pressure rotor-stator support frame, the rotor-stator unit is in a horizontal state; when the first support shaft is supported on the low-pressure rotor-stator support frame and the second support shaft is located above the first support shaft, the rotor-stator unit is in a first vertical state; and when the second support shaft is supported on the low-pressure rotor-stator support frame and the first support shaft is located above the second support shaft, the rotor-stator unit is in a second vertical state.

2. The low-pressure turbine disassembly and assembly tool according to claim 1, characterized in that, The first support shaft is provided with a first positioning hole and a second positioning hole, and the low-pressure rotor support frame is provided with a third positioning hole; the low-pressure rotor fixing fixture also includes a positioning pin, and the first positioning hole and the second positioning hole are respectively used to cooperate with the third positioning hole through the positioning pin to limit the relative position of the first support shaft and the low-pressure rotor support frame; Specifically, when the positioning pin is inserted into the first positioning hole and the third positioning hole, the low-pressure rotor-stator fixing clamp supports the rotor-stator unit in the horizontal state; when the positioning pin is inserted into the second positioning hole and the third positioning hole, the low-pressure rotor-stator fixing clamp supports the rotor-stator unit in the first vertical state.

3. The low-pressure turbine disassembly and assembly tool according to claim 1, characterized in that, The second support shaft is provided with a fourth positioning hole and a fifth positioning hole, and the low-pressure rotor support frame is provided with a sixth positioning hole; the low-pressure rotor fixing fixture also includes a positioning pin, and the fourth positioning hole and the fifth positioning hole are respectively used to cooperate with the sixth positioning hole through the positioning pin to limit the relative position of the second support shaft and the low-pressure rotor support frame; Specifically, when the positioning pin is inserted into the fourth positioning hole and the sixth positioning hole, the low-pressure rotor-stator fixing clamp supports the rotor-stator unit in the horizontal state; when the positioning pin is inserted into the fifth positioning hole and the sixth positioning hole, the low-pressure rotor-stator fixing clamp supports the rotor-stator unit in the second vertical state.

4. The low-pressure turbine disassembly and assembly tool according to claim 1, characterized in that, The low-pressure rotor-stator fixing fixture also includes a fixing disk and a rotor fixing assembly. The fixing disk is annular and is used to fix it to the rear mounting edge of the rotor-stator unit. The rotor fixing assembly is fixedly connected to the inner edge of the fixing disk and is used to fix it to the rotor of the rotor-stator unit. Both rotating support members are fixedly connected to the fixing disk and are arranged opposite to each other on the radial sides of the fixing disk.

5. The low-pressure turbine disassembly and assembly tool according to claim 4, characterized in that, The rotor fixing assembly includes a support ring and a plurality of hooks; the support ring includes an annular tube portion, a first connecting ring portion and a second connecting ring portion, the first connecting ring portion and the second connecting ring portion are respectively disposed on both axial sides of the annular tube portion, and the first connecting ring portion extends radially outward along the annular tube portion and is fixedly connected to the inner edge of the fixing disk; the second connecting ring portion extends radially inward along the annular tube portion; the plurality of hooks are rotatably disposed on the second connecting ring portion along the circumference of the support ring, and the plurality of hooks are respectively used to engage and fix with the center of the last stage turbine disk of the rotor-stator unit.

6. The low-pressure turbine disassembly and assembly tool according to claim 5, characterized in that, The rotor fixing assembly further includes an adjusting bolt and a locking bolt. The locking bolt passes through the first connecting ring portion and is screwed to the fixed disk to lock the support ring onto the fixed disk. The adjusting bolt is screwed to the first connecting ring portion and is used to abut against the axial end face of the fixed disk to adjust the axial position of the support ring relative to the fixed disk.

7. The low-pressure turbine disassembly and assembly tool according to claim 1, characterized in that, The low-pressure turbine shaft disassembly and assembly device includes a frame, a horizontal sliding assembly, and a position adjustment assembly. The frame is detachably connected to the low-pressure rotor-stator disassembly and assembly device. The position adjustment assembly is mounted on the frame via the horizontal sliding assembly. The position adjustment assembly is used to horizontally support the low-pressure turbine shaft and adjust the attitude of the low-pressure turbine shaft so that the low-pressure turbine shaft is aligned with the support cone wall of the rotor-stator unit. The horizontal sliding assembly is used to drive the position adjustment assembly to slide relative to the frame so that the low-pressure turbine shaft moves closer to or further away from the rotor-stator unit to meet the disassembly and assembly requirements.

8. The low-pressure turbine disassembly and assembly tool according to claim 7, characterized in that, The horizontal sliding assembly includes a base and an axial slide block. The base is fixedly mounted on the vehicle frame and has a groove. The posture adjustment assembly is mounted on the axial slide block and has a boss below the axial slide block. The boss slides in cooperation with the groove.

9. The low-pressure turbine disassembly and assembly tool according to claim 8, characterized in that, The base is also provided with an axial long groove, and the side of the boss is provided with a plurality of limiting pins. The limiting pins slide with the axial long groove to limit the boss in the groove.

10. The low-pressure turbine disassembly and assembly tool according to claim 7, characterized in that, The pose adjustment component includes a height adjustment structure for adjusting the height pose of the low-pressure turbine shaft.

11. The low-pressure turbine disassembly and assembly tool according to claim 10, characterized in that, The height adjustment structure includes a support base and a wedge-shaped slider. The support base is provided with a first abutting inclined surface and a second abutting inclined surface. The wedge-shaped slider is mounted on the horizontal sliding assembly and has a third abutting inclined surface that abuts against the first abutting inclined surface. The horizontal sliding assembly is provided with a fourth abutting inclined surface that abuts against the second abutting inclined surface. The wedge-shaped slider is used to move closer to or further away from the fourth abutting inclined surface to drive the support base to move up and down, thereby adjusting the height and position of the low-pressure turbine shaft.

12. The low-pressure turbine disassembly and assembly tool according to claim 11, characterized in that, The posture adjustment component also includes a screw, which is screwed to the wedge-shaped slider and is used to drive the wedge-shaped slider to move relatively closer to or away from the fourth abutment slope through the rotation of the screw.

13. The low-pressure turbine disassembly and assembly tool according to claim 12, characterized in that, The posture adjustment assembly further includes a retaining ring, which is rotatably mounted on the screw and fixedly connected to the support base to restrict the movement of the screw relative to the support base along the screw axis.

14. The low-pressure turbine disassembly and assembly tool according to claim 10, characterized in that, The pose adjustment assembly further includes an angle adjustment structure for rotatably supporting the low-pressure turbine shaft to adjust the angular pose by rotating the low-pressure turbine shaft about its axis.

15. The low-pressure turbine disassembly and assembly tool according to claim 14, characterized in that, The angle adjustment structure includes two support components, which are spaced apart on the height adjustment structure and are used to support both ends of the low-pressure turbine shaft. The support assembly includes a top support wheel and two bottom support wheels, which clamp the low-pressure turbine shaft at three points.

16. The low-pressure turbine disassembly and assembly tool according to claim 15, characterized in that, The support assembly also includes a clamping frame, on which the top support wheel is rotatably mounted, and the clamping frame is detachably connected to the height adjustment structure by bolts.

17. The low-pressure turbine disassembly and assembly tool according to claim 1, characterized in that, The low-pressure turbine disassembly and assembly tool also includes a connecting beam, the two ends of which are detachably connected to the low-pressure turbine shaft disassembly and assembly device and the low-pressure rotor-stator disassembly and assembly device, respectively.

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