Positioning installation device for turbine disc rotation balance test

Abstract

The utility model discloses a positioning installation device used for a turbine disc rotation balance test, comprising a positioning mechanism, the positioning mechanism comprises a central shaft, a right positioning disc and a left positioning disc, the right positioning disc is sleeved on the outer side of the right end of the central shaft in an interference fit manner, and the left positioning disc is slidably sleeved on the outer side of the left end of the central shaft; a limiting step is arranged on the central shaft on the right side of the left positioning disc; the two ends of the central shaft are respectively connected with the balance test platform through rotating bearings. A turbine disc is clamped and positioned between the left positioning disc and the right positioning disc, the peripheral sides of the left positioning disc and the right positioning disc are fixedly connected through a plurality of screws, and one end of each screw sequentially penetrates through the right positioning disc, the turbine disc and the left positioning disc and is connected with a nut. According to the utility model, each stage of turbine disc can be stably and rapidly clamped and horizontally placed on a rotation balance test platform for single-stage rotation balance, the jerk value of the turbine disc can be ensured to be less than 0.02 mm, and the device has better practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of the rotational balance test equipment of the axial flow turbine rotor of a compressor, and particularly relates to a positioning and mounting device for the rotational balance test of a turbine disk. Background Art

[0002] When performing dynamic balance on a turbine rotor, it is usually necessary to combine multiple-stage turbine rotors together, connect them in series with long bolts, and there are relevant central shafts and bearings on both sides of the turbine rotor assembly. Place it on a rotational balance test platform to test the rotational balance. However, when performing single-stage rotational balance test after disassembling the multi-stage turbine rotor, installation difficulties will occur. Since the inside of the turbine rotor is hollow and there is no through shaft, it is impossible to horizontally place the turbine rotor on the rotational balance test platform. Currently, a core shaft is generally connected to the mounting disk and the turbine disk with screws, but it is impossible to ensure that the runout of the turbine disk is less than 0.02 mm. Content of the Utility Model

[0003] The purpose of the utility model is to provide a positioning and mounting device for the rotational balance test of a turbine disk, aiming to solve the above problems.

[0004] The utility model is mainly realized by the following technical solutions:

[0005] A positioning and mounting device for the rotational balance test of a turbine disk, including a positioning mechanism for rotatably mounting the turbine disk on a balance test platform; the positioning mechanism includes a central shaft, a right positioning disk, and a left positioning disk. The right positioning disk is installed on the outer side of the right end of the central shaft by interference fit, and the left positioning disk is slidably sleeved on the outer side of the left end. A limiting step is arranged on the central shaft on the right side of the left positioning disk; both ends of the central shaft are connected to the balance test platform through rotating bearings; the turbine disk is clamped and positioned between the left positioning disk and the right positioning disk, and the circumferential sides between the left positioning disk and the right positioning disk are fixedly connected by a plurality of screws. One end of the screw passes through the right positioning disk, the turbine disk, and the left positioning disk in sequence and is connected to a nut.

[0006] In order to better implement the utility model, further, an interference fit surface is arranged on the circumferential side of the right side of the central shaft, and a limiting protrusion is arranged on the circumferential side of the central shaft on the left side of the interference fit surface. An interference fit groove corresponding to the interference fit surface is arranged in the middle of the right positioning disk, and the right positioning disk abuts against the limiting protrusion; a sliding surface is arranged on the circumferential side of the left side of the central shaft, and a limiting step is arranged on the side of the sliding surface close to the limiting protrusion. A sliding hole is correspondingly arranged in the middle of the left positioning disk.

[0007] To better implement the present utility model, further, it further includes a pressing cylinder, a right support sleeve, a left support sleeve, a left pressing column, and a right pressing column; the left support sleeve and the right support sleeve are respectively used to assist in supporting the left and right sides of the turbine disk; the pressing cylinder is used to press the positioning mechanism into the turbine disk for positioning and installation; the left pressing column and the right pressing column are respectively used to press against the positioning mechanisms on the left and right sides of each stage of the turbine disk to realize the disassembly of the positioning mechanism.

[0008] To better implement the present utility model, further, the rotational balance testing device is respectively provided with a first-stage positioning mechanism, a second-stage positioning mechanism, a third-stage positioning mechanism, and a fourth-stage positioning mechanism corresponding to the first-stage turbine disk, the second-stage turbine disk, the third-stage turbine disk, and the fourth-stage turbine disk.

[0009] To better implement the present utility model, further, the positioning mechanism of the first-stage positioning mechanism includes a first-stage disk central shaft, a first-stage disk right positioning disk, and a first-stage disk left positioning disk; a first-stage disk right positioning disk is installed by interference fit on the outer side of the right end of the first-stage disk central shaft, and a first-stage disk left positioning disk is slidably installed on the outer side of the left end, and a limiting step is provided on the first-stage disk central shaft on the right side of the first-stage disk left positioning disk; the right outer side of the first-stage turbine disk is in interference fit with the inner side of the first-stage disk right positioning disk, and the left inner side of the first-stage turbine disk is in interference fit with the outer side of the first-stage disk left positioning disk; the circumferential sides between the first-stage disk left positioning disk and the first-stage disk right positioning disk are fixedly connected by a plurality of screws, and one end of the screw sequentially passes through the first-stage disk right positioning disk, the first-stage turbine disk, and the first-stage disk left positioning disk and is connected with a nut.

[0010] To better implement the present utility model, further, the second-stage positioning mechanism includes a second-stage disk central shaft, a second-stage disk left positioning disk, and a second-stage disk right positioning disk; a second-stage disk right positioning disk is installed by interference fit on the outer side of the right end of the second-stage disk central shaft, and a second-stage disk left positioning disk is slidably installed on the outer side of the left end, and a limiting step is provided on the second-stage disk central shaft on the right side of the second-stage disk left positioning disk; the left and right outer sides of the second-stage turbine disk are respectively in interference fit with the inner sides of the second-stage disk left positioning disk and the second-stage disk right positioning disk; the circumferential sides between the second-stage disk left positioning disk and the second-stage disk right positioning disk are fixedly connected by a plurality of screws, and one end of the screw sequentially passes through the second-stage disk right positioning disk, the second-stage turbine disk, and the second-stage disk left positioning disk and is connected with a nut.

[0011] In order to better implement the present utility model, further, the three - level positioning mechanism includes a three - level disk central shaft, a three - level disk left positioning disk, and a three - level disk right positioning disk. A three - level disk right positioning disk is installed on the outer side of the right end of the three - level disk central shaft by interference fit, and a three - level disk left positioning disk is slidably sleeved on the outer side of the left end. A limiting step is provided on the three - level disk central shaft on the right side of the three - level disk left positioning disk; the left and right inner side surfaces of the three - level turbine disk are respectively in interference fit with the outer sides of the three - level disk left positioning disk and the three - level disk right positioning disk; the circumferential sides between the three - level disk left positioning disk and the three - level disk right positioning disk are fixedly connected by a plurality of screws, and one end of each screw sequentially passes through the three - level disk right positioning disk, the three - level turbine disk, and the three - level disk left positioning disk and is connected to a nut.

[0012] In order to better implement the present utility model, further, the four - level positioning mechanism includes a four - level disk central shaft, a four - level disk left positioning disk, and a four - level disk right positioning disk. A four - level disk right positioning disk is installed on the outer side of the right end of the four - level disk central shaft by interference fit, and a four - level disk left positioning disk is slidably sleeved on the outer side of the left end. A limiting step is provided on the four - level disk central shaft on the right side of the four - level disk left positioning disk; the left and right outer side surfaces of the four - level turbine disk are respectively in interference fit with the inner sides of the four - level disk left positioning disk and the four - level disk right positioning disk; the circumferential sides between the four - level disk left positioning disk and the four - level disk right positioning disk are fixedly connected by a plurality of screws, and one end of each screw sequentially passes through the four - level disk right positioning disk, the four - level turbine disk, and the four - level disk left positioning disk and is connected to a nut.

[0013] The beneficial effects of the present utility model are as follows:

[0014] When the present utility model is installed, the turbine disk is placed vertically, while during the rotational balance test, the turbine disk is placed horizontally. The present utility model first fixedly installs one side of the turbine disk through the central shaft and the right positioning disk, and then integrally fixes and clamps the turbine disk through the left positioning disk and the screws. Both ends of the central shaft are respectively connected to the rotational balance test platform through rotating bearings. The present utility model can stably and quickly clamp the turbine disks of each level, place them horizontally on the rotational balance test platform, and perform single - level rotational balance, which can ensure that the run - out of the turbine disk is less than 0.02 mm, and has good practicability. Brief Description of the Drawings

[0015] Figure 1 It is a schematic installation structure diagram of the first - level turbine disk and the first - level positioning mechanism;

[0016] Figure 2 It is a schematic structure diagram of the first - level positioning mechanism;

[0017] Figure 3 It is a schematic structure diagram of the first - level disk right positioning disk;

[0018] Figure 4 It is a schematic structure diagram of the first - level disk left positioning disk;

[0019] Figure 5 Schematic diagram of the installation structure of the secondary turbine disk and the secondary positioning mechanism;

[0020] Figure 6 Schematic diagram of the structure of the secondary positioning mechanism;

[0021] Figure 7 Schematic diagram of the installation structure of the tertiary turbine disk and the tertiary positioning mechanism;

[0022] Figure 8 Schematic diagram of the structure of the tertiary positioning mechanism;

[0023] Figure 9 Schematic diagram of the structures of the left tertiary disk positioning disk and the right tertiary disk positioning disk;

[0024] Figure 10 Schematic diagram of the installation structure of the quaternary turbine disk and the quaternary positioning mechanism;

[0025] Figure 11 Schematic diagram of the structure of the quaternary positioning mechanism.

[0026] Among them, 1 - central axis of the primary disk, 2 - right positioning disk of the primary disk, 3 - left positioning disk of the primary disk, 4 - pressing cylinder, 5 - left pressing column, 6 - right pressing column, 7 - right support sleeve, 8 - left support sleeve, 9 - central axis of the secondary disk, 10 - left positioning disk of the secondary disk, 11 - right positioning disk of the secondary disk, 12 - central axis of the tertiary disk, 13 - left positioning disk of the tertiary disk, 14 - right positioning disk of the tertiary disk, 15 - central axis of the quaternary disk, 16 - left positioning disk of the quaternary disk, 17 - right positioning disk of the quaternary disk. Specific implementation mode

[0027] Example 1:

[0028] A positioning and installation device for the rotational balance test of a turbine disk, including a positioning mechanism for rotatably installing the turbine disk on a balance test platform; the positioning mechanism includes a central axis, a right positioning disk, and a left positioning disk. The outer side of the right end of the central axis is installed with the right positioning disk by interference fit, and the outer side of the left end is slidably sleeved with the left positioning disk. A limiting step is provided on the central axis on the right side of the left positioning disk; both ends of the central axis are connected to the balance test platform through rotating bearings; the turbine disk is clamped and positioned between the left positioning disk and the right positioning disk, and the circumferential sides between the left positioning disk and the right positioning disk are fixedly connected by a plurality of screws. One end of the screw sequentially passes through the right positioning disk, the turbine disk, and the left positioning disk and is connected to a nut.

[0029] Specifically, an interference fit surface is provided along the circumferential side on the right side of the central axis, and a limiting protrusion is provided along the circumferential side of the central axis on the left side of the interference fit surface. An interference fit groove is provided in the middle of the right positioning disc corresponding to the interference fit surface, and the right positioning disc abuts against the limiting protrusion; a sliding surface is provided along the circumferential side on the left side of the central axis, and a limiting step is provided on the side of the sliding surface close to the limiting protrusion. A sliding hole is correspondingly provided in the middle of the left positioning disc.

[0030] Preferably, it further includes a pressing cylinder 4, a right support sleeve 7, a left support sleeve 8, a left pressing-out column 5 and a right pressing-out column 6; the left support sleeve 8 and the right support sleeve 7 are respectively used to assist in supporting the left and right sides of the turbine disc; the pressing cylinder 4 is used to press the positioning mechanism into the turbine disc for positioning and installation; the left pressing-out column 5 and the right pressing-out column 6 are respectively used to press against the positioning mechanisms on the left and right sides of each stage of the turbine disc to realize the disassembly of the positioning mechanism.

[0031] When the utility model is installed, the turbine disc is placed vertically, while during the rotational balance test, the turbine disc is placed horizontally. First, place the left support sleeve 8 under the turbine disc, and use the pressing cylinder 4 to press the combination of the central axis and the right positioning disc into the turbine disc. Then, turn the turbine disc around, place the right support sleeve 7 under the turbine disc, and use the pressing cylinder 4 to press the left positioning disc into the turbine disc. Finally, use the hexagon socket head cap screws and nuts to install the left positioning disc, the turbine disc and the right positioning disc together. When disassembling, first remove all the screws and nuts, then install the right support sleeve 7 under the turbine disc, press the left pressing-out column 5 above the central axis to press out the combination of the central axis and the right positioning disc. Finally, turn the direction around, place the left support sleeve 8 under the turbine disc, and use the right pressing-out column 6 to press out the left positioning disc. The utility model can stably and quickly clamp each stage of the turbine disc, place it horizontally on the rotational balance test platform for single-stage rotational balance, and can ensure that the runout of the turbine disc is less than 0.02 mm, having good practicability.

[0032] Embodiment 2:

[0033] A positioning and installation device for the rotational balance test of a turbine disc. When the utility model is installed, each stage of the turbine disc is placed vertically, while during the rotational balance test, each stage of the turbine disc is placed horizontally. The specific installation structure is as follows:

[0034] As Figures 1 - 4As shown, the first-stage right positioning disk 2 is installed in interference fit with the first-stage disk central shaft 1, and the first-stage left positioning disk 3 is installed in a small clearance fit with the first-stage disk central shaft 1. The first-stage left positioning disk 3 can slide on the cylindrical surface of the first-stage disk central shaft 1. A set of bearings and snap rings are installed on both the left and right sides of the first-stage disk central shaft 1. When installed with the first-stage turbine disk, the outer side of the right face of the first-stage turbine disk is in interference fit with the inner side of the first-stage right positioning disk 2, and the inner side of the left face of the first-stage turbine disk is in interference fit with the outer side of the first-stage left positioning disk 3. During installation, first place the left support sleeve 8 under the first-stage turbine disk, and use the pressing cylinder 4 to press the combination of the first-stage disk central shaft 1 and the first-stage right positioning disk 2 into the first-stage turbine disk. Then, turn the first-stage turbine disk around, place the right support sleeve 7 under the first-stage turbine disk, and use the pressing cylinder 4 to press the first-stage left positioning disk 3 into the first-stage turbine disk. Finally, use the hexagon socket head cap screws and nuts to install the first-stage left positioning disk 3, the first-stage turbine disk, and the first-stage right positioning disk 2 together. During disassembly, first remove all the screws and nuts, then install the right support sleeve 7 under the first-stage turbine disk, press on the upper part of the first-stage disk central shaft 1 with the left pressing column 5, and press out the combination of the first-stage disk central shaft 1 and the first-stage right positioning disk 2. Finally, turn the direction around, place the left support sleeve 8 under the turbine disk, and use the right pressing column 6 to press out the first-stage left positioning disk 3.

[0035] As Figure 5 and Figure 6 shown, the second-stage right positioning disk 11 is installed in interference fit with the second-stage disk central shaft 9, and the second-stage left positioning disk 10 is installed in a small clearance fit with the second-stage disk central shaft 9. The second-stage left positioning disk 10 can slide on the cylindrical surface of the second-stage disk central shaft 9. A set of bearings and snap rings are installed on both the left and right sides of the second-stage disk central shaft 9. When installed with the second-stage turbine disk, the outer sides of the left and right faces of the second-stage turbine disk are in interference fit with the inner sides of the second-stage left positioning disk 10 and the second-stage right positioning disk 11. During installation, first place the support sleeve under the second-stage turbine disk, and use the pressing cylinder 4 to press the combination of the second-stage disk central shaft 9 and the second-stage right positioning disk 11 into the second-stage turbine disk. Then, turn the first-stage turbine disk around, place the support sleeve under the first-stage turbine disk, and use the pressing cylinder 4 to press the second-stage left positioning disk 10 into the second-stage turbine disk. Finally, use the hexagon socket head cap screws and nuts to install the second-stage left positioning disk 10, the second-stage turbine disk, and the second-stage right positioning disk 11 together. During disassembly, first remove all the screws and nuts, then install the pressing cylinder 4 under the first-stage turbine disk, press on the upper part of the second-stage disk central shaft 9 with the left pressing column 5, and press out the combination of the second-stage disk central shaft 9 and the second-stage right positioning disk 11. Finally, turn the direction around, place the support sleeve under the turbine disk, and use the right pressing column 6 to press out the second-stage left positioning disk 10.

[0036] As Figures 7 - 9As shown, the right positioning disk 14 of the third-stage disk is installed with an interference fit on the central shaft 12 of the third-stage disk, and the left positioning disk 13 of the third-stage disk is installed with a small clearance fit on the central shaft 12 of the third-stage disk. The left positioning disk 13 of the third-stage disk can slide on the cylindrical surface of the central shaft 12 of the third-stage disk. A set of bearings and snap rings are installed on both the left and right sides of the central shaft 12 of the third-stage disk. When installed with the third-stage turbine disk, the inner sides of the left and right surfaces of the third-stage turbine disk are in interference fit with the outer sides of the left positioning disk 13 and the right positioning disk 14 of the third-stage disk. During installation, first place the support sleeve under the third-stage turbine disk, and use the pressing cylinder 4 to press the combination of the central shaft 12 of the third-stage disk and the right positioning disk 14 into the third-stage turbine disk. Then, turn the third-stage turbine disk around, place the support sleeve under the third-stage turbine disk, and use the pressing cylinder 4 to press the left positioning disk 13 of the third-stage disk into the third-stage turbine disk. Finally, use the hexagon socket head cap screws and nuts to install the left positioning disk 13 of the third-stage disk, the second-stage turbine disk, and the right positioning disk 14 of the third-stage disk together. During disassembly, first remove all the screws and nuts, then install the pressing cylinder 4 under the first-stage turbine disk, press on the upper part of the central shaft 12 of the third-stage disk with the left pressing column 5, and press out the combination of the central shaft 12 of the third-stage disk and the right positioning disk 14. Finally, turn the direction around, place the support sleeve under the turbine disk, and use the right pressing column 6 to press out the left positioning disk 13 of the third-stage disk.

[0037] As Figure 10 and Figure 11 shown, the right positioning disk 17 of the fourth-stage disk is installed with an interference fit on the central shaft 15 of the fourth-stage disk, and the left positioning disk 16 of the fourth-stage disk is installed with a small clearance fit on the central shaft 15 of the fourth-stage disk. The left positioning disk 16 of the fourth-stage disk can slide on the cylindrical surface of the central shaft 15 of the fourth-stage disk. A set of bearings and snap rings are installed on both the left and right sides of the central shaft 15 of the fourth-stage disk. When installed with the fourth-stage turbine disk, the outer sides of the left and right surfaces of the fourth-stage turbine disk are in interference fit with the inner side of the central shaft 15 of the fourth-stage disk. During installation, first place the support sleeve under the fourth-stage turbine disk, and use the pressing cylinder 4 to press the combination of the central shaft 15 of the fourth-stage disk and the right positioning disk 17 into the fourth-stage turbine disk. Then, turn the fourth-stage turbine disk around, place the support sleeve under the fourth-stage turbine disk, and use the pressing cylinder 4 to press the left positioning disk 16 of the fourth-stage disk into the fourth-stage turbine disk. Finally, use the hexagon socket head cap screws and nuts to install the left positioning disk 16 of the fourth-stage disk, the second-stage turbine disk, and the right positioning disk 17 of the fourth-stage disk together. During disassembly, first remove all the screws and nuts, then install the support sleeve under the first-stage turbine disk, press on the upper part of the central shaft 15 of the fourth-stage disk with the left pressing column 5, and press out the combination of the central shaft 15 of the fourth-stage disk and the right positioning disk 17. Finally, turn the direction around, place the support sleeve under the turbine disk, and use the right pressing column 6 to press out the left positioning disk 16 of the fourth-stage disk.

[0038] According to the above operation method, the first-level positioning mechanism, second-level positioning mechanism, third-level positioning mechanism, and fourth-level positioning mechanism set corresponding to the first-level turbine disk, second-level turbine disk, third-level turbine disk, and fourth-level turbine disk can be installed or disassembled.

[0039] The above are only the preferred embodiments of the present invention, and do not impose any formal restrictions on the present invention. Any simple modifications and equivalent changes made to the above embodiments based on the technical essence of the present invention all fall within the protection scope of the present invention.

Claims

1. A positioning and mounting device for turbine disk rotation balance test, characterized in that: It includes a positioning mechanism for rotatably installing the turbine disk on a balancing test platform; the positioning mechanism includes a central shaft, a right positioning disk and a left positioning disk, the right end outer side of the central shaft is sleeved with an interference fit to install the right positioning disk, and the left end outer side is sleeved with a sliding sleeve to install the left positioning disk, and a limited position step is arranged on the central shaft on the right side of the left positioning disk; the two ends of the central shaft are respectively connected to the balancing test platform through rotating bearings; a turbine disk is clamped and positioned between the left positioning disk and the right positioning disk, and the circumferential sides between the left positioning disk and the right positioning disk are fixedly connected by a plurality of screws, and one end of the screw passes through the right positioning disk, the turbine disk and the left positioning disk in sequence and is connected to a nut.

2. A positioning and mounting device for turbine disk rotation balance test according to claim 1, characterized in that: An interference fit surface is provided along the circumferential side on the right side of the central axis, and a limiting protrusion is provided along the circumferential side of the central axis on the left side of the interference fit surface, an interference fit groove is provided in the middle part of the right positioning plate corresponding to the interference fit surface, and the right positioning plate abuts against the limiting protrusion; a sliding surface is provided along the circumferential side on the left side of the central axis, and a limiting step is provided on the side of the sliding surface close to the limiting protrusion, and a sliding hole is provided in the middle part of the left positioning plate correspondingly.

3. A positioning and mounting device for turbine disk rotation balance test according to claim 1, characterized in that: It also comprises a press-in cylinder (4), a right support sleeve (7), a left support sleeve (8), a left press-out column (5) and a right press-out column (6); the left support sleeve (8) and the right support sleeve (7) are respectively used to assist in supporting the left and right sides of the turbine disc; the press-in cylinder (4) is used to press the positioning mechanism into the turbine disc for positioning and installation; the left press-out column (5) and the right press-out column (6) are respectively used to press the positioning mechanisms on the left and right sides of each level of the turbine disc to achieve disassembly of the positioning mechanism.

4. A positioning and mounting device for turbine disk rotation balance test according to any one of claims 1 to 3, characterized in that: The rotation balance test device is provided with a primary positioning mechanism, a secondary positioning mechanism, a tertiary positioning mechanism and a fourth positioning mechanism corresponding to the primary turbine disk, the secondary turbine disk, the tertiary turbine disk and the fourth turbine disk respectively.

5. A positioning and mounting device for turbine disk rotation balance test according to claim 4, characterized in that: The positioning mechanism of the primary positioning mechanism comprises a primary disk central axis (1), a primary disk right positioning disk (2) and a primary disk left positioning disk (3); the primary disk right positioning disk (2) is sleeved and installed on the right outer side of the primary disk central axis (1) by interference fit, and the primary disk left positioning disk (3) is sleeved and installed on the left outer side of the primary disk central axis (1) by sliding fit, and a limited position step is arranged on the primary disk central axis (1) on the right side of the primary disk left positioning disk (3); the right outer side surface of the primary turbine disk is tightly fitted with the inner side of the primary disk right positioning disk (2), and the left inner side surface of the primary turbine disk is tightly fitted with the outer side of the primary disk left positioning disk (3); the circumferential sides between the primary disk left positioning disk (3) and the primary disk right positioning disk (2) are fixedly connected by a plurality of screws, one end of each screw passes through the primary disk right positioning disk (2), the primary turbine disk and the primary disk left positioning disk (3) in sequence and is connected to a nut.

6. A positioning and mounting device for turbine disk rotation balance test according to claim 4, characterized in that: The secondary positioning mechanism comprises a secondary disk central axis (9), a secondary disk left positioning disk (10) and a secondary disk right positioning disk (11); the secondary disk right positioning disk (11) is sleeved and installed on the right outer side of the secondary disk central axis (9) in an interference fit manner, and the secondary disk left positioning disk (10) is sleeved and installed on the left outer side of the secondary disk; a limited position step is arranged on the secondary disk central axis (9) on the right side of the secondary disk left positioning disk (10); the left and right outer side surfaces of the secondary turbine disk are respectively interference fit with the inner sides of the secondary disk left positioning disk (10) and the secondary disk right positioning disk (11); the circumferential sides between the secondary disk left positioning disk (10) and the secondary disk right positioning disk (11) are fixedly connected by a plurality of screws, one end of each screw passes through the secondary disk right positioning disk (11), the secondary turbine disk and the secondary disk left positioning disk (10) in sequence and is connected to a nut.

7. A positioning and mounting device for turbine disk rotation balance test according to claim 4, characterized in that: The three-stage positioning mechanism comprises a three-stage disk central axis (12), a three-stage disk left positioning disk (13) and a three-stage disk right positioning disk (14); the right end of the three-stage disk central axis (12) is sleeved with the three-stage disk right positioning disk (14) in an interference fit manner, and the left end is sleeved with the three-stage disk left positioning disk (13) in a sliding manner; a limited position step is provided on the three-stage disk central axis (12) on the right side of the three-stage disk left positioning disk (13); the left and right inner side surfaces of the three-stage turbine disk are respectively interference fit with the outer sides of the three-stage disk left positioning disk (13) and the three-stage disk right positioning disk (14); the circumferential sides between the three-stage disk left positioning disk (13) and the three-stage disk right positioning disk (14) are fixedly connected by a plurality of screws, one end of each of the screws passes through the three-stage disk right positioning disk (14), the three-stage turbine disk and the three-stage disk left positioning disk (13) in sequence and is connected to a nut.

8. A positioning and mounting device for turbine disk rotation balance test according to claim 4, characterized in that: The four-stage positioning mechanism comprises a four-stage disk central axis (15), a four-stage disk left positioning disk (16) and a four-stage disk right positioning disk (17); the four-stage disk right positioning disk (17) is sleeved and installed on the right outer side of the right end of the four-stage disk central axis (15) in an interference fit manner, and the four-stage disk left positioning disk (16) is sleeved and installed on the left outer side of the four-stage disk; a limited position step is arranged on the four-stage disk central axis (15) on the right side of the four-stage disk left positioning disk (16); the left and right outer side surfaces of the four-stage turbine disk are respectively interference fit with the inner sides of the four-stage disk left positioning disk (16) and the four-stage disk right positioning disk (17); the circumferential sides between the four-stage disk left positioning disk (16) and the four-stage disk right positioning disk (17) are fixedly connected by a plurality of screws, one end of each screw passes through the four-stage disk right positioning disk (17), the four-stage turbine disk and the four-stage disk left positioning disk (16) in sequence and is connected to a nut.

Images