A deformable handle mechanism

Abstract

The application belongs to the technical field of aero-engines, and particularly relates to a deformable wrench mechanism, which adopts a deformable mechanism, which is composed of a main body framework, a deformation control mechanism, a deformation fixing mechanism and a positioning mechanism. The main body framework controls deformation of the main body framework to extend into the inner cavity of a rotor and is bolt-connected with the inner cavity. The deformation fixing mechanism is installed in the main body framework to keep the main body framework in a fixed state and transmit torque. The positioning mechanism facilitates torque transmission and positioning of the wrench. The application replaces a scheme for reducing the size of the wrench, thereby ensuring the strength and rigidity of the wrench. The wrench is deformed to pass through a narrow space, and after reaching the installation position of the bolt, the wrench is restored to the working state to complete the installation of the bolt in the rotor. Then, the wrench is deformed again to pass through the narrow space and is taken out.

Description

Technical Field

[0001] The present application belongs to the field of aero-engine technology, and in particular relates to a deformable wrench mechanism. Background Art

[0002] To avoid disrupting the flow path, modern aircraft engine rotating components typically install connecting components (bolts, nuts, etc.) inside the rotor. These connecting components are typically evenly distributed circumferentially within the rotor. The magnitude of the connecting force after installation, as well as the uniformity of the connecting force across the circumference, significantly impact rotor loads and vibration. Furthermore, as rotor loads increase, the required connection force for these connecting components also increases, leading to an increase in the installation torque for bolts and nuts. To accommodate these increasing installation torques and ensure uniform final installation torque for bolts along the same circumference, the rigidity and strength requirements for wrenches are also increasing. As rotor performance, strength, and functionality become increasingly stringent, the internal structure of the rotor is becoming increasingly complex, compressing the space within the rotor cavity. Furthermore, as the strength and rigidity of the wrenches used to install the bolts continue to increase, their volume also increases, increasing the internal space requirements. Consequently, existing wrenches are becoming increasingly inadequate for rotor assembly. To accommodate the shrinking internal rotor space, existing wrenches have had to be reduced in size to ensure access to the rotor interior for bolt installation. However, this also forces the wrench's stiffness and strength to decrease, which conflicts with the trend of increasingly higher requirements for the size and uniformity of the rotor's connecting bolt installation torque, and can no longer adapt to the development trend of aircraft engine assembly. Summary of the Invention

[0003] In order to solve the above problems, the present application provides a deformable wrench mechanism, comprising:

[0004] Deformation fixing structure, deformation control mechanism, main structure and positioning mechanism;

[0005] The main structure includes a long sleeve with a central hole, a transfer plate fixed to the first end of the long sleeve, and a dodecagonal hole plate hinged to the second end of the long sleeve. The dodecagonal hole plate has a hexagonal hole and a dodecagonal hole that fits with the bolt. When in operation, the plate surface of the dodecagonal hole plate is perpendicular to the axis of the long sleeve, and the central axis of the hexagonal hole is coaxial with the central hole of the long sleeve.

[0006] The deformation control mechanism has one end adjustably mounted on the transfer plate and the other end hinged on the twelve-angle hole plate, and is used to lift the twelve-angle hole plate into a working state;

[0007] The deformable fixing structure includes a fixing plate and a first long rod vertically fixed to one end of the fixing plate. The end of the first long rod has a hexagonal prism section. When in working state, the first long rod passes through the center hole of the long sleeve and is inserted into the hexagonal hole. The fixing plate has a wrench hole for applying torque. The fixing plate is positioned and connected to the transfer plate through a first locating pin. The transfer plate has a second locating pin coaxial with the wrench hole. The second locating pin is inserted into a plurality of locating holes of the positioning mechanism.

[0008] The positioning mechanism has a central through hole for the main structure to pass through, one end of the positioning mechanism is installed on the component, and the other end has circumferentially distributed positioning holes.

[0009] Preferably, the deformation control mechanism comprises: a long rod, a control rod fork, a slide rail, a connecting rod, and a knob; the first end of the long rod has an external thread, the second end is fixedly connected to the control rod fork, the slide rail has a track formed by a straight through hole, and a pin passes through the track to hinge the control rod fork and the connecting rod;

[0010] The first end of the long rod passes through the through hole of the transfer plate and is threadedly connected to the knob. The knob is installed on the transfer plate. Rotating the knob causes the long rod to move horizontally. The translation of the long rod lifts the twelve-angle hole plate into a working state.

[0011] Preferably, the second positioning pin is coaxial with the dodecagonal hole in the working state.

[0012] Preferably, the deformation control mechanism includes: a long rod, a control rod fork, a sliding rail and a connecting rod; the first end of the long rod has an external thread, and the second end has a hinge shaft coaxial with the long rod, and the hinge shaft is hinged to the control rod fork, so that the long rod has the freedom to rotate around the axis of the long rod relative to the control rod fork; the first end of the long rod is screwed into the threaded through hole of the transfer plate, and the first end of the long rod has a detachable mounting handle, and the long rod is screwed by the handle to lift the twelve-angle hole plate into the working state.

[0013] Preferably, the knob is disc-shaped and is placed in a circular groove of the transfer plate. The side portion of the knob is exposed outside the circular groove. A thrust bearing is provided between the knob and the bottom of the circular groove. A baffle is provided at the notch of the circular groove to limit the knob from escaping from the circular groove. A thrust bearing is provided between the baffle and the knob.

[0014] Preferably, the slide rail has a longitudinal slot, and the slot walls on both sides of the longitudinal slot have a straight through hole to form the track, one end of the connecting rod is placed in the longitudinal slot, the control rod is forked with two arms, and the slide rail is placed between the two arms.

[0015] Preferably, both ends of the long rod have hexagonal prism sections, and both ends of the central hole of the long sleeve have hexagonal holes that fit with the hexagonal prism sections.

[0016] Preferably, one end of the positioning mechanism is mounted on the rotor inner cavity opening, and the other end has a positioning mechanism flange, which has a plurality of positioning holes, and the radial position and angular position of the positioning holes are the same as the radial position and angular position of the bolts in the rotor inner cavity.

[0017] Preferably, the long sleeve is hinged to the twelve-angled hole plate through the through hole on the portal frame and the rotating shaft. The portal frame is provided with a limiting boss. When the twelve-angled hole plate rotates to the working state, the limiting boss restricts the twelve-angled hole plate from continuing to rotate.

[0018] Preferably, the dodecagonal hole plate has a support arm connected to the deformation control mechanism, and the support arm is used to eliminate dead points during the movement of the dodecagonal hole plate and the deformation control mechanism.

[0019] The advantages of this application include: 1. Improving the strength and rigidity of the wrench, avoiding the need for non-deformable wrenches to be reduced in size, such as becoming thinner, narrower, etc., to fit into narrow spaces. This allows for the installation of bolts requiring greater torque inside the rotor, while ensuring the accuracy of torque control.

[0020] While increasing the assembly torque and improving the control torque accuracy, this mechanism is low-cost and easy to operate. This mechanism has a simple structure and is easy to manufacture. Compared with existing solutions, the manufacturing difficulty and cost are basically the same. Furthermore, the mechanism is easy to operate, and the assembly efficiency is basically the same as that of existing solutions.

[0021] This reduces the difficulty of rotor design. Because rotor design must consider assembly performance, adjustments and even compromises are often made in strength, performance, and processing to ensure assembly and secure assembly space. This mechanism reduces the need for assembly space to a certain extent, contributing to better rotor performance in other areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is the overall schematic diagram of the wrench mechanism;

[0023] Figure 2 It is a schematic diagram of the main structure;

[0024] Figure 3 It is a cross-sectional view of the main structure;

[0025] Figure 4 It is a schematic diagram of a long casing;

[0026] Figure 5 It is a schematic diagram of a dodecagonal hole plate;

[0027] Figure 6 This is a schematic diagram of the transfer board;

[0028] Figure 7is a schematic diagram of the deformation control mechanism;

[0029] Figure 8 is a cross-sectional view of the deformation control mechanism;

[0030] Figure 9 It is a schematic diagram of the knob structure;

[0031] Figure 10 It is a schematic diagram of the slide rail;

[0032] Figure 11 This is a schematic diagram of the connection at the slide rail;

[0033] Figure 12 Schematic diagram of the wrench mechanism deforming to enter the inner cavity through the narrow segment of the rotor;

[0034] Figure 13 This is a schematic diagram of the wrench mechanism returning to working condition in the inner cavity;

[0035] Figure 14 is a schematic diagram of the deformation fixing mechanism;

[0036] Figure 15 is a cross-sectional view of the deformation fixing mechanism;

[0037] Figure 16 is a schematic diagram of the positioning mechanism;

[0038] Figure 17 This is a schematic diagram of the use of the wrench mechanism. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the implementation of this application will be described in more detail below in conjunction with the drawings in the implementation of this application. In the drawings, the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The described implementation is a part of the implementation of this application, not all of the implementations. The implementation described below with reference to the drawings is exemplary and is intended to be used to explain this application, and should not be understood as a limitation on this application. Based on the implementation in this application, all other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. The implementation of this application is described in detail below in conjunction with the drawings.

[0040] The present application provides a deformable wrench mechanism for disassembling and assembling bolts in a rotor cavity, the wrench mechanism comprising:

[0041] The deformation fixing structure 1, the deformation control mechanism 2, the main structure 3 and the positioning mechanism 4, such as Figure 1 As shown;

[0042] The main structure 3 is the main frame of the wrench. Figure 2 、 Figure 3 As shown, it includes a long sleeve 32 with a center hole, a transfer plate 31 fixed to the first end of the long sleeve 32, and a twelve-angle hole plate 33 hinged to the second end of the long sleeve 32; the long sleeve 32 realizes the connection between the wrench and the inner and outer parts of the rotor, as shown in FIG. Figure 4 The dodecagonal hole plate 33 has a hexagonal hole 331 and a dodecagonal hole 332 that fits with the bolt. The dodecagonal hole 332 can directly match the hexagonal or dodecagonal outer contour of the bolt / nut and tighten it. When in working state, the plate surface of the dodecagonal hole plate 33 is perpendicular to the axis of the long sleeve 32, and the central axis of the hexagonal hole 331 is coaxial with the central hole of the long sleeve 32; the long sleeve 32 is hinged to the dodecagonal hole plate 33 through the through hole on the door frame 321 and the rotating shaft 333. The rotating shaft 333 is perpendicular to the axis of the long sleeve. When the deformation fixing mechanism 1 is not installed, the dodecagonal hole plate can rotate freely around the rotating shaft 333. Figure 5 , when in working state, the size and orientation of the hexagonal hole 331 of the dodecagonal hole plate 33 aligned with the center of the long sleeve 32 are exactly the same as the hexagonal hole 331 in the center of the gantry. After the deformation fixing mechanism is installed, the two hexagonal holes 331 complete the force transmission through the deformation fixing mechanism, which can avoid the rotation axis 333 and the gantry being subjected to force during twisting, causing the rotation to be inflexible. At the same time, the two hexagonal holes 331 cooperate with the deformation fixing mechanism 1, and can also prevent the dodecagonal hole plate 33 from rotating around the rotation axis 333 during the twisting process, so that it always remains in the correct working state. Since the maximum outline of the two hexagonal holes is smaller than the center hole of the long sleeve, the part that cooperates with it can be smoothly inserted into the hole through the long sleeve. The dodecagonal hole plate is also designed with a connection point with the deformation control structure. After connection, the deformation control mechanism can control it to rotate to the appropriate position around the rotation axis 333 according to the needs of the operator. The transfer plate 31 is located outside the rotor and is used to apply torque, such as Figure 6 , the transfer plate 31 and the long sleeve 32 are completely fixed, and two positioning pins are designed on the transfer plate 31, which cooperate with the positioning mechanism 4 and the deformation fixing mechanism respectively. A hexagonal hole 331 is also designed at the position where the center of the transfer plate 31 and the long sleeve 32 are aligned, which cooperates with the deformation fixing structure 1 to realize force transmission. The minimum outline of the hexagonal hole 331 is larger than the center hole of the long sleeve 32, ensuring that all mechanisms that need to enter the long sleeve 32 can pass through the hole smoothly. The transfer plate 31 also reserves a mounting hole for the control mechanism, as well as a bolt hole that cooperates with the deformation fixing mechanism. The portal frame 321 is provided with a limiting boss. When the twelve-angle hole plate 33 rotates to the working state, the limiting boss limits the twelve-angle hole plate 33 from continuing to rotate. Among them, the twelve-angle hole plate 33 has a support arm connected to the deformation control mechanism 2, and the support arm is used to eliminate the dead point during the movement of the twelve-angle hole plate 33 and the deformation control mechanism 2.

[0043] Deformation control mechanism 2, see Figure 7 、 Figure 8 The deformation control mechanism 2 is responsible for controlling the rotation of the twelve-angle hole plate 33 on the main structure, so that the main structure enters the rotor after deformation and returns to the working state again. It mainly consists of a knob 26, a control rod, a slide rail 23, and a connecting rod 24. Figure 9 As shown, the knob 26 is installed in the control mounting hole on the transfer plate 31. The knob 26 is restricted in the mounting hole by two small thrust bearings 27, so that the knob 26 can only rotate freely around the axis, but cannot move along the axis. One end of the knob 26 extends out of the mounting hole, which is convenient for rotating the knob 26. The center of the knob 26 is a threaded hole, and the rotating knob 26 can drive the control structure to move along the axis through the thread. The control rod is the main part of the control mechanism, and one end of it is a threaded rod structure, which cooperates with the threaded hole in the center of the knob 26. When the knob 26 is rotated, the thread can drive the control rod to move in the direction of the center line. As shown Figure 11 As shown, the other end of the control rod is forked in a gate shape. A pin is used to pass through the through holes on both sides of the fork to fix it to the slide rail 23, thereby more accurately controlling the movement trajectory of the other end of the control rod when the thread is driven. At the same time, under the action of the pin, the control rod cannot rotate about the axis, so when the knob 26 is rotated, the control rod cannot rotate with it, but can only move linearly under the action of the thread. The slide rail 23 is completely fixed to the surface of the long sleeve 32, as shown in FIG. Figure 10 As shown, a long groove is opened in the middle along the longitudinal direction, and symmetrical straight through holes are designed on both sides of the long groove. The pin of the gate-shaped fractal fork of the control rod passes through the through hole on the fork and the straight through hole at the same time. Combined with the limiting effect of the threaded end of the control rod, the control rod can only move in the direction of the straight hole. The connecting rod 24 is a straight rod with axial holes at both ends, and one end is installed in the long groove of the slide rail 23. The pin on the control rod fork 22 passes through the straight holes on both sides of the slide rail 23 and the axial hole on the connecting rod 24 at the same time. Under the limitation of the pin, the control rod can only move in the direction of the straight hole of the slide rail 23, and can rotate around the pin. The other end of the connecting rod 24 is connected to the twelve-angle hole plate 33 by a pin to ensure that the two can only rotate around the pin. The position and length of the straight groove of the slide rail 23 limit the rotation range of the twelve-angle hole plate 33 to ensure that it can be rotated to the ideal angle.

[0044] like Figure 12 、 Figure 13As shown, the working principle of the deformation control mechanism 2 is as follows: in order to make the twelve-corner hole plate 33 pass through the center of the rotor, the knob 26 is rotated. Under the action of two small thrust bearings 27, the knob 26 cannot move along the axis. At the same time, the control rod is fixed by the pin at the other end and the slide rail 23, and cannot rotate with the knob 26. It can only move along the axis driven by the threaded engagement with the knob 26. The control rod moves along the axis toward one end of the slide rail 23, thereby pushing one end of the connecting rod 24 along the slide rail 23 through the connecting pin. Since the other end of the connecting rod 24 is connected to the twelve-corner hole plate 33 by the pin, when the slide rail 23 at one end of the connecting rod 24 moves, the other end will push the twelve-corner hole plate 33. The twelve-corner hole plate 33 is connected to the long sleeve 32 via the rotating shaft 333 and can only rotate around the rotating shaft 333 at this location. According to the above motion relationship, rotating knob 26 eventually drives dodecagonal perforated plate 33 to rotate substantially parallel to the axis of long sleeve 32, allowing the wrench to smoothly pass through the smaller diameter hole in the rotor and enter the inner cavity. After the dodecagonal perforated plate 33 enters the inner cavity, rotating knob 26 in the opposite direction will drive the dodecagonal perforated plate 33 back to the working state, that is, perpendicular to the axis of long sleeve 32.

[0045] In an alternative embodiment, the deformation control mechanism 2 includes: a second long rod 21, a control rod fork 22, a slide rail 23 and a connecting rod 24; the first end of the second long rod 21 has an external thread, and the second end has a hinge shaft coaxial with the second long rod 21, and the hinge shaft is hinged to the control rod fork 22, so that the second long rod 21 has the freedom to rotate around the axis of the second long rod 21 relative to the control rod fork 22; the first end of the second long rod 21 is screwed into the threaded through hole of the transfer plate 31, and the first end of the second long rod 21 has a detachable mounting handle, and the second long rod 21 is screwed by the handle to lift the twelve-angle hole plate 33 into the working state.

[0046] The first end of the second long rod 21 passes through the through hole of the transfer plate and is threadedly connected to the knob 26. The knob 26 is installed on the transfer plate. Rotating the knob 26 causes the second long rod 21 to move horizontally. The translation of the second long rod 21 lifts the twelve-angle hole plate 33 into working state.

[0047] Deformed fixed structure 1, such as Figure 14The deformation fixing mechanism is used when the wrench is in the working state, so that the wrench is always kept in the working state, and is responsible for the transmission of torque during the wrench operation, including a fixed plate 12 and a first long rod 11 vertically fixed to one end of the fixed plate 12. The end of the first long rod 11 has a hexagonal prism section 111, which is mainly composed of a second long rod 21 and a fixed plate. Both ends of the second long rod 21 have hexagonal outer contours, and the middle is a straight section with a maximum contour smaller than the center hole of the long sleeve 32, ensuring that it can pass through the center hole of the sleeve smoothly during use. The hexagonal outer contour of one end of the second long rod 21 is smaller than the center hole of the sleeve, passes through the center hole of the sleeve to enter the inner side of the rotor and cooperates with the hexagonal hole 331 on the dodecagonal hole plate 33. The hexagonal outer contour at the other end cooperates with the hexagonal hole 331 on the transfer plate 31 on the outside of the rotor. When twisting, the second long rod 21 transmits torque through the two hexagonal holes 331, avoiding the flexibility of the rotating shaft 333 being affected by the torque being transmitted through the rotating shaft 333 between the long sleeve 32 and the twelve-angle hole plate 33. The outer end of the second long rod 21 is completely fixed to the fixed plate. A positioning pin hole is designed on the fixed plate, which cooperates with the positioning pin on the transfer plate 31 and the hexagonal hole 331 to position the fixed plate. A twisting hole is designed on the fixed plate, and a special wrench is used to cooperate with the twisting hole to apply installation torque to the bolt / nut during operation. A bolt hole is designed at the corresponding position of the fixed plate and the transfer plate 31, and a bolt is used to fix the two during operation to avoid damage to the wrench due to reasons such as operational errors causing the fixing mechanism to come off. An anti-interference hole for the deformation control mechanism 2 is also designed on the fixed plate to avoid affecting the movement of the threaded section of the first long rod 11;

[0048] The principle of operation of the deformable fixing mechanism is as follows: under the action of the control mechanism, after the twelve-angle plate of the main mechanism enters the working position and returns to the working state, the fixing mechanism is inserted from the center of the long sleeve 32, so that the hexagonal outer contours at both ends of the second long rod 21 are respectively inserted into the two hexagonal holes 331 on the inner and outer sides of the main structure. If the second long rod 21 cannot be inserted smoothly, it means that the state of the twelve-angle plate 33 is slightly different from the working state. At this time, the knob 26 of the fine-tuning control mechanism is slightly adjusted to slightly adjust the angle of the twelve-angle plate 33 until the second long rod 21 is successfully inserted. This indicates that the twelve-angle plate 33 has been adjusted to the correct state. At this time, under the action of the second long rod 21, the twelve-angle plate 33 cannot continue to rotate and always remains in the correct state. As the second long rod 21 is inserted, the pin control on the fixing plate mates with the pin hole on the transfer plate 31 to ensure that the fixing mechanism is installed in the correct state. Finally, the fixing plate and the transfer plate 31 are fixed with bolts to prevent the fixing mechanism from being dislodged and damaging the wrench due to errors during operation.

[0049] The positioning mechanism 4 is used to fix the rotor and help the operator quickly determine and find the position of the bolts to be installed. Its structure is a cylindrical structure. One end of the cylinder is connected to the rotor and the fixing device to prevent the rotor from rotating. The other end is in the form of a flange. The positioning holes 41 distributed along the circumference of the flange are consistent with the circumferential distribution of the bolts inside the rotor. When in use, it is only necessary to align the positioning pin on the transfer plate 31 with a certain positioning hole 41, and the twelve-angle hole 332 of the wrench will inevitably align with the bolt at the corresponding position. At the same time, the central axes of the wrench hole on the fixing plate, the positioning pin of the transfer plate 31, and the center of the twelve-angle hole 332 are aligned. At this time, the torque applied to the wrench through the wrench hole using the torque control wrench is the installation torque of the bolt. Among them, the radial position and angular position of the positioning hole 41 are the same as the radial position and angular position of the bolt in the rotor cavity.

[0050] The entire mechanism usage process is as follows:

[0051] like Figure 17 , use the positioning mechanism 4 to fix the rotor so that the rotor cannot rotate, and make the positioning hole 41 on the positioning mechanism 4 consistent with the position of the bolt inside the rotor. Rotate the knob 26 on the transfer plate 31 to push the twelve-angle hole plate 33 to open, pass the wrench through the center of the rotor, and make the twelve-angle hole plate 33 reach the installation position of the inner cavity bolt. Rotate the knob 26 in the opposite direction to restore the twelve-angle hole plate 33 to the working state. Insert the second long rod 21 of the deformable fixing mechanism into the long sleeve 32, and at the same time align the positioning hole 41 of the fixing plate with the first positioning pin on the transfer plate 31. During the insertion process, the state of the twelve-angle hole plate 33 can be appropriately fine-tuned by using the knob 26 to facilitate the insertion of the second long rod 21. After the fixing mechanism is installed in place, fix the fixing plate and the transfer plate 31 with bolts. Align the second positioning pin on the transfer plate 31 with a positioning hole 41 on the flange of the positioning mechanism 4. At this time, the twelve-angle hole 332 is also aligned with the center of the bolt. Use a torque-controlled wrench to tighten the wrench holes on the fixing plate. The torque output of the torque-controlled wrench is the installation torque of the bolts. After tightening all the bolts in sequence using the above alignment method, remove the fixing mechanism, control the twelve-angle hole plate 33 to open again using knob 26, remove the wrench from the inner cavity, and remove the positioning structure to complete all operations.

[0052] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A deformable wrench mechanism, characterized in that: include: A deformation fixing structure (1), a deformation control mechanism (2), a main structure (3), and a positioning mechanism (4); The main structure (3) comprises a long sleeve (32) having a central hole, a transfer plate (31) fixed to a first end of the long sleeve (32), and a twelve-corner hole plate (33) hinged to a second end of the long sleeve (32); the twelve-corner hole plate (33) has a hexagonal hole (331) and a twelve-corner hole (332) fitted with a bolt; in a working state, the plate surface of the twelve-corner hole plate (33) is perpendicular to the axis of the long sleeve (32), and the central axis of the hexagonal hole (331) is coaxial with the central hole of the long sleeve (32); A deformation control mechanism (2), one end of which is adjustably mounted on the transfer plate (31) and the other end of which is hinged to the twelve-corner hole plate (33) for lifting the twelve-corner hole plate (33) into a working state; A deformable fixed structure (1) comprises a fixed plate (12) and a first long rod (11) vertically fixed to one end of the fixed plate (12), the end of the first long rod (11) having a hexagonal prism section (111), and when in a working state, the first long rod (11) passes through the central hole of the long sleeve (32) and is inserted into the hexagonal hole (331); the fixed plate (12) has a wrench hole (121) for applying torque; the fixed plate (12) is positioned and connected to the transfer plate (31) via a first positioning pin (34), the transfer plate (31) has a second positioning pin (35) coaxial with the wrench hole (121), and the second positioning pin (35) is inserted into a plurality of positioning holes (41) provided in the positioning mechanism (4); The positioning mechanism (4) has a central through hole for the main structure (3) to pass through, one end of which is mounted on the component, and the other end of which has circumferentially distributed positioning holes (41).

2. The deformable wrench mechanism according to claim 1, wherein: The deformation control mechanism (2) comprises: a second long rod (21), a control rod fork (22), a slide rail (23), a connecting rod (24), and a knob (26); the first end of the second long rod (21) has an external thread, and the second end is fixedly connected to the control rod fork (22); the slide rail (23) has a track formed by a straight through hole, and a pin passes through the track to hinge the control rod fork (22) and the connecting rod (24); The first end of the second long rod (21) passes through the through hole of the transfer plate and is threadedly connected to the knob (26). The knob (26) is installed on the transfer plate. Rotating the knob (26) causes the second long rod (21) to move horizontally. The translation of the second long rod (21) lifts the twelve-corner hole plate (33) into a working state.

3. The deformable wrench mechanism according to claim 1, wherein: The second positioning pin (35) is coaxial with the twelve-angle hole (332) in the working state.

4. The deformable wrench mechanism according to claim 1, wherein: The deformation control mechanism (2) comprises: a second long rod (21), a control rod fork (22), a slide rail (23) and a connecting rod (24); the first end of the second long rod (21) has an external thread, and the second end has a hinge shaft coaxial with the second long rod (21), the hinge shaft is hinged to the control rod fork (22), so that the second long rod (21) has a degree of freedom to rotate around the axis of the second long rod (21) relative to the control rod fork (22); the first end of the second long rod (21) is screwed into the threaded through hole of the transfer plate (31), and the first end of the second long rod (21) is detachably mounted with a handle, and the second long rod (21) is screwed by the handle to lift the twelve-angle hole plate (33) into a working state.

5. The deformable wrench mechanism according to claim 2, wherein: The knob (26) is disc-shaped and is placed in a circular groove provided on the transfer plate (31). The side portion of the knob (26) is exposed outside the circular groove. A thrust bearing (27) is provided between the knob (26) and the bottom of the circular groove. A baffle is provided at the notch of the circular groove to limit the knob (26) from escaping the circular groove. A thrust bearing (27) is provided between the baffle and the knob (26).

6. The deformable wrench mechanism according to claim 2, wherein: The slide rail (23) has a longitudinal long groove, and the groove walls on both sides of the longitudinal long groove have the track formed by a straight through hole. One end of the connecting rod (24) is placed in the longitudinal long groove, and the control rod fork (22) has two support arms, and the slide rail (23) is placed between the two support arms.

7. The deformable wrench mechanism according to claim 1, wherein: Both ends of the first long rod (11) have hexagonal prism sections (111), and both ends of the central hole of the long sleeve (32) have hexagonal holes that fit into the hexagonal prism sections (111).

8. The deformable wrench mechanism according to claim 1, wherein: One end of the positioning mechanism (4) is mounted on the rotor inner cavity opening, and the other end has a positioning mechanism flange (42). The positioning mechanism flange (42) has a plurality of positioning holes (41). The radial position and angular position of the positioning holes (41) are the same as the radial position and angular position of the bolts in the rotor inner cavity.

9. The deformable wrench mechanism according to claim 1, wherein: The long sleeve (32) is hinged to the twelve-corner hole plate (33) through a through hole on the door frame (321) and a rotating shaft (333). The door frame (321) has a limiting boss. When the twelve-corner hole plate (33) rotates to a working state, the limiting boss limits the twelve-corner hole plate (33) from continuing to rotate.

10. The deformable wrench mechanism according to claim 1, wherein: The twelve-corner hole plate (33) is provided with a support arm connected to the deformation control mechanism (2), and the support arm is used to eliminate the dead point during the movement of the twelve-corner hole plate (33) and the deformation control mechanism (2).

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