Design method and system for circumferential tenon rotor locking structure in a disc separation structure

Abstract

The present invention relates to the technical field of aeroengines, and discloses a design method and system for a circumferential tenon rotor locking structure in a disk-blade separation structure. An anti-rotation groove is used to prevent the load-bearing block from rotating, so as to ensure that the load-bearing bolt can adjust the radial height of the load-bearing block in the anti-rotation groove, so that the load-bearing contact surface located in the anti-rotation groove can closely abut against the corresponding position of the anti-rotation groove, thereby realizing the fixation of the relative position of the load-bearing block, and avoiding the problem of loosening during the locking of the circumferential tenon rotor, which leads to locking failure. By comprehensively considering the centrifugal force generated by the locking structure during high-speed rotation, the designed pre-tightening force of the load-bearing bolt, and the material strength of the load-bearing block, the inclination angle of the load-bearing contact surface is designed to ensure that the load-bearing contact surface can not only resist the action of the centrifugal force, but also be within the range allowed by the material strength, thereby improving the reliability and safety of the entire locking structure.

Description

Technical Field

[0001] The present invention relates to the technical field of aeroengines, and discloses a design method and system for a circumferential tenon rotor locking structure in a disk-blade separation structure. Background Art

[0002] On the rotor of an aeroengine (such as a fan / supercharger stage, a compressor, etc.), when a circumferential tenon disk-blade separation structure is adopted, it is necessary to consider the circumferential positioning of the rotor blades by a blade locking device to prevent the blades from falling off the rotor disk during operation. Locking by the locking device is a most common circumferential positioning method. Affected by the superposition of multiple conditions such as the small size and high precision requirements of the locking device itself, the harsh working environment, and the limited operation space, if the design method is not standardized and the design structure has defects, problems such as easy damage to the wrench opening and difficulty in assembly and disassembly will occur after multiple uses. Thus, it affects the development process of the engine. Summary of the Invention

[0003] The purpose of the present invention is to provide a design method and system for a circumferential tenon rotor locking structure in a disk-blade separation structure, which can realize the fixation of the relative positions of the load-bearing blocks, avoid the problem of loosening during the locking process of the circumferential tenon rotor resulting in locking failure, and ensure that the load-bearing contact surface can not only resist the action of centrifugal force but also be within the allowable range of material strength, thereby improving the reliability and safety of the entire locking structure.

[0004] In order to achieve the above technical effects, the technical solution adopted by the present invention is:

[0005] A design method for a circumferential tenon rotor locking structure in a disk-blade separation structure, the locking structure includes a rotation stop groove, the rotation stop groove is opened on the disk, the rotation stop groove extends radially inward from the outer wall of the disk, and the rotation stop groove is opened at the position of the disk corresponding to the circumferential tenon of the rotor blade; a load-bearing block is installed in the rotation stop groove, an inclined load-bearing contact surface is provided on the circumferential edge of the load-bearing block, and the load-bearing contact surface is used to contact the inner wall of the rotation stop groove; a limiting hole is provided on the lower edge plate of the rotor blade, the radially outer end of the load-bearing block extends radially into the limiting hole, and a threaded hole is provided on the load-bearing block along the radial direction; a load-bearing bolt is fitted in the threaded hole, and one end of the load-bearing bolt abuts against the bottom of the rotation stop groove to adjust the radial height of the load-bearing block in the rotation stop groove; the design method includes:

[0006] Analyze and obtain the centrifugal force of the locking structure according to the structural dimensions of the load-bearing block and the load-bearing bolt and the rotational speed of the disk;

[0007] Adjust the radial height of the load-bearing block in the anti-rotation groove by using a load-bearing bolt to achieve the designed radial pre-tightening force after the load-bearing contact surface contacts the inner wall of the anti-rotation groove, and analyze and obtain the first limit range of the inclination angle of the load-bearing contact surface according to the centrifugal force, the upper limit value of the compressive strength of the load-bearing block material, and the extrusion contact area between the load-bearing contact surface and the inner wall of the anti-rotation groove;

[0008] Construct an analysis model of the extrusion contact between the load-bearing contact surface and the inner wall of the anti-rotation groove, apply the centrifugal force and the designed radial pre-tightening force to the analysis model, and simulate and obtain the vertical distance from the maximum shear action point on the load-bearing contact surface to the bottom of the load-bearing block;

[0009] Analyze and obtain the second limit range of the inclination angle of the load-bearing contact surface according to the vertical distance, the axial projection width of the load-bearing contact surface, the designed radial pre-tightening force, the centrifugal force, and the upper limit value of the shear strength of the load-bearing block material;

[0010] Take the intersection of the first limit range and the second limit range as the value range of the inclination angle of the load-bearing contact surface.

[0011] Furthermore, a limiting constriction is provided at the opening of the anti-rotation groove to limit the load-bearing block in the anti-rotation groove.

[0012] Furthermore, the load-bearing block is of a T-shaped structure, the load-bearing block includes a load-bearing part arranged axially and a limiting part arranged radially, the limiting part is used to extend into the limiting hole, the load-bearing contact surfaces are symmetrically distributed on both axial sides of the load-bearing part, and the threaded hole penetrates the load-bearing block radially.

[0013] Furthermore, the axial length of the load-bearing part is greater than the axial width of the limiting constriction, and the circumferential thickness of the load-bearing part is less than the axial width of the limiting constriction.

[0014] Furthermore, the first limit range of the inclination angle of the load-bearing contact surface is obtained by analysis where is the inclination angle of the load-bearing contact surface, is the upper limit value of the compressive strength of the load-bearing block material, is the centrifugal force of the locking structure at the wheel disc speed, is the designed radial pre-tightening force, is the extrusion contact area of the load-bearing contact surface.

[0015] Furthermore, the second limit range of the inclination angle of the load-bearing contact surface is obtained by analysis where is the upper limit value of the shear strength of the load-bearing block material, is the vertical distance from the maximum shear action point on the load-bearing contact surface obtained by simulation to the bottom of the load-bearing block, is the axial projection width of the load-bearing contact surface, is the axial projection width of the load-bearing contact surface, is the inclination angle of the load-bearing contact surface, is the centrifugal force of the locking structure at the disk speed, is the designed radial pre-tightening force.

[0016] Furthermore, the designed radial pre-tightening force after the load-bearing contact surface contacts the inner wall of the anti-rotation groove is obtained according to analysis, where is the designed radial pre-tightening force, is the tightening torque of the load-bearing bolt, is the tightening torque coefficient of the load-bearing bolt, is the nominal diameter of the thread of the load-bearing bolt.

[0017] To achieve the above technical effects, the present invention also provides a circumferential tenon rotor locking structure design system in a disk separation structure for implementing the design method, including:

[0018] A centrifugal force analysis module for analyzing and obtaining the centrifugal force of the locking structure according to the structural dimensions of the load-bearing block and the load-bearing bolt and the disk speed;

[0019] A first analysis module for using the load-bearing bolt to adjust the radial height of the load-bearing block in the anti-rotation groove to obtain the designed radial pre-tightening force after the load-bearing contact surface contacts the inner wall of the anti-rotation groove, and analyzing and obtaining the first limit range of the inclination angle of the load-bearing contact surface according to the centrifugal force, the upper limit value of the compressive strength of the load-bearing block material, and the contact extrusion area between the load-bearing contact surface and the inner wall of the anti-rotation groove;

[0020] A simulation analysis module for constructing an analysis model of the contact extrusion between the load-bearing contact surface and the inner wall of the anti-rotation groove, applying the centrifugal force and the designed radial pre-tightening force on the analysis model, and simulating and obtaining the vertical distance from the maximum shear action point on the load-bearing contact surface to the bottom of the load-bearing block;

[0021] A second analysis module for analyzing and obtaining the second limit range of the inclination angle of the load-bearing contact surface according to the vertical distance, the axial projection width of the load-bearing contact surface, the designed radial pre-tightening force and the centrifugal force, and the upper limit value of the shear strength of the load-bearing block material;

[0022] An inclination angle range determination module for taking the intersection of the first limit range and the second limit range as the value range of the inclination angle of the load-bearing contact surface.

[0023] Furthermore, in the first analysis module, the first limit range of the inclination angle of the load-bearing contact surface is obtained according to analysis, where is the inclination angle of the load-bearing contact surface, is the upper limit value of the compressive strength of the load-bearing block material, is the centrifugal force of the locking structure at the disc speed, is the designed radial pre-tightening force, is the extrusion contact area of the load-bearing contact surface;

[0024] In the second analysis module, the second limit range of the inclination angle of the load-bearing contact surface is obtained according to analysis, where is the upper limit value of the shear strength of the load-bearing block material, is the vertical distance from the maximum shear action point on the load-bearing contact surface obtained by simulation to the bottom of the load-bearing block, is the axial projection width of the load-bearing contact surface, is the inclination angle of the load-bearing contact surface, is the centrifugal force of the locking structure at the disc speed, is the designed radial pre-tightening force.

[0025] Furthermore, in the first analysis module, the designed radial pre-tightening force after the load-bearing contact surface contacts the inner wall of the anti-rotation groove is obtained according to analysis, where is the designed radial pre-tightening force, is the tightening torque of the load-bearing bolt, is the tightening torque coefficient of the load-bearing bolt, is the nominal diameter of the thread of the load-bearing bolt.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] 1. The present invention uses the anti-rotation groove to prevent the load-bearing block from rotating, so as to ensure that the load-bearing bolt can adjust the radial height of the load-bearing block in the anti-rotation groove, so that the load-bearing contact surface located in the anti-rotation groove can closely abut against the corresponding position of the anti-rotation groove, thereby realizing the fixation of the relative position of the load-bearing block and avoiding the problem of loosening during the locking process of the circumferential tenon rotor and resulting in locking failure.

[0028] 2. The present invention designs the inclination angle of the load-bearing contact surface by comprehensively considering the centrifugal force generated by the locking structure during high-speed rotation, the designed pre-tightening force of the load-bearing bolt, and the material strength of the load-bearing block, ensuring that the load-bearing contact surface can not only resist the action of the centrifugal force but also be within the allowable range of the material strength, thereby improving the reliability and safety of the entire locking structure. Description of the Drawings

[0029] Figure 1 is a schematic diagram of the design method of the circumferential tenon rotor locking structure in the disc separation structure in the embodiment;

[0030] Figure 2 is a schematic diagram of the structure of the load-bearing block in the embodiment;

[0031] Figure 3 Flow chart of the design method for the circumferential tenon rotor locking structure in the disk separation structure in the embodiment

[0032] Wherein, 1, anti-rotation groove; 2, disk; 3, rotor blade; 4, load-bearing block; 401, load-bearing part; 4011, load-bearing contact surface; 402, limiting part; 403, threaded hole; 5, load-bearing bolt Specific implementation manner

[0033] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present invention to the following embodiments. Any technology implemented based on the content of the present invention belongs to the scope of the present invention

[0034] Embodiment

[0035] See Figures 1 - 3 , a design method for the circumferential tenon rotor locking structure in the disk separation structure, wherein the locking structure includes

[0036] Anti-rotation groove 1, which is opened on the disk 2, extends radially inward from the outer wall of the disk 2, and is opened at the position of the disk 2 corresponding to the circumferential tenon of the rotor blade 3

[0037] Load-bearing block 4, which is installed in the anti-rotation groove 1. An inclined load-bearing contact surface 4011 is provided on the circumferential edge of the load-bearing block 4 for contacting the inner wall of the anti-rotation groove 1; a limiting hole is provided on the lower edge plate of the rotor blade 3, and the radially outer end of the load-bearing block 4 extends radially into the limiting hole. A threaded hole 403 is provided on the load-bearing block 4 along the radial direction

[0038] Load-bearing bolt 5, which is cooperatively installed in the threaded hole 403. One end of the load-bearing bolt 5 abuts against the bottom of the anti-rotation groove 1 to adjust the radial height of the load-bearing block 4 in the anti-rotation groove 1

[0039] In this embodiment, the radial height of the load-bearing block 4 is adjusted by the load-bearing bolt 5, so that the upper part of the load-bearing block 4 extends into the limiting hole of the circumferential tenon of the rotor blade 3, completing the locking of the circumferential tenon rotor in the disk separation structure and avoiding the problem of circumferential displacement of the rotor blade 3; among them, the load-bearing block 4 is prevented from rotating through the anti-rotation groove 1 to ensure that the load-bearing bolt 5 can adjust the radial height of the load-bearing block 4 in the anti-rotation groove 1, so that the load-bearing contact surface 4011 located in the anti-rotation groove 1 can closely abut against the corresponding position of the anti-rotation groove 1, thereby realizing the fixation of the relative position of the load-bearing block 4 and avoiding the problem of loosening and locking failure during the locking process of the circumferential tenon rotor

[0040] In this embodiment, a limiting constriction is further provided at the opening of the anti-rotation groove 1 to limit the load-bearing block 4 in the anti-rotation groove 1. If the load-bearing block 4 becomes loose during the locking process, the limiting constriction can limit the load-bearing block 4 in the anti-rotation groove 1 to the greatest extent possible, making it less likely to be thrown out, thereby improving safety during operation.

[0041] In this embodiment, the load-bearing block 4 is a T-shaped structure, and the load-bearing block 4 includes a load-bearing portion 401 arranged axially and a limiting portion 402 arranged radially. The limiting portion 402 is used to extend into the limiting hole, and the load-bearing contact surfaces 4011 are symmetrically distributed on both sides of the load-bearing portion 401 in the axial direction, and the threaded hole 403 radially penetrates the load-bearing block 4. The symmetrical distribution design of the load-bearing contact surface 4011 enables the load-bearing block 4 to evenly distribute pressure when subjected to force, thereby avoiding the problem of locking failure caused by uneven force. The threaded hole 403 radially penetrates the load-bearing block 4, which facilitates the radial height adjustment of the load-bearing block 4 by the load-bearing bolt 5, and also ensures the accuracy and stability of the load-bearing block 4 when adjusting the radial height.

[0042] In this embodiment, the axial length of the load-bearing part 401 is greater than the axial width of the limiting constriction, and the circumferential thickness of the load-bearing part 401 is less than the axial width of the limiting constriction. It is ensured that when the load-bearing block 4 is installed, the load-bearing part 401 can be smoothly passed through the limiting constriction and entered into the anti-rotation groove 1 by rotating the load-bearing part 401 in the direction, and then the matching and locking of the limiting part 402 and the anti-rotation groove 1 are achieved by rotating the load-bearing part 401 to reset. The specific operation process is: when the load-bearing block 4 is installed, it is convenient to rotate the load-bearing part 401 90 degrees to insert it into the anti-rotation groove 1 from the limiting constriction, and then rotate it 90 degrees to reset. At this time, since the axial length of the load-bearing part 401 is greater than the axial width of the limiting constriction, the load-bearing part 401 is restricted from escaping from the anti-rotation groove.

[0043] The design method of the circumferential tenon rotor locking structure in the disc separation structure of this embodiment includes:

[0044] Step 1: Analyze and obtain the centrifugal force of the locking structure based on the structural dimensions of the bearing block 4 and the bearing bolt 5 and the rotation speed of the wheel disc 2.

[0045] Step 2: Use the bearing bolt 5 to adjust the radial height of the bearing block 4 in the anti-rotation groove 1 to obtain a designed radial preload force after the bearing contact surface 4011 contacts the inner wall of the anti-rotation groove 1, and analyze and obtain a first limit range of the inclination angle of the bearing contact surface 4011 based on the centrifugal force, the upper limit of the compressive strength of the material of the bearing block 4, and the contact and extrusion area between the bearing contact surface 4011 and the inner wall of the anti-rotation groove 1;

[0046] In this embodiment, the first limit range of the inclination angle of the load-bearing contact surface 4011 is based on The analysis obtained is the inclination angle of the load-bearing contact surface 4011, is the upper limit value of the compressive strength of the material of the load-bearing block 4, is the centrifugal force of the locking structure at the rotational speed of the wheel disc 2, is the designed radial pre-tightening force, is the extrusion contact area of the load-bearing contact surface 4011.

[0047] In this embodiment, the designed radial pre-tightening force after the load-bearing contact surface 4011 contacts the inner wall of the anti-rotation groove 1 is obtained according to analysis, where is the designed radial pre-tightening force, is the tightening torque of the load-bearing bolt 5, is the tightening torque coefficient of the load-bearing bolt 5, is the nominal diameter of the thread of the load-bearing bolt 5.

[0048] Step 3: Construct an analysis model of the extrusion contact between the load-bearing contact surface 4011 and the inner wall of the anti-rotation groove 1, apply the centrifugal force and the designed radial pre-tightening force on the analysis model, and simulate to obtain the vertical distance from the maximum shear action point on the load-bearing contact surface 4011 to the bottom of the load-bearing block 4.

[0049] Step 4: According to the vertical distance, the axial projection width of the load-bearing contact surface 4011, the designed radial pre-tightening force and the centrifugal force, and the upper limit value of the shear strength of the material of the load-bearing block 4, analyze and obtain the second limit range of the inclination angle of the load-bearing contact surface 4011;

[0050] In this embodiment, the second limit range of the inclination angle of the load-bearing contact surface 4011 is obtained according to analysis, where is the upper limit value of the shear strength of the material of the load-bearing block 4, is the vertical distance from the maximum shear action point on the load-bearing contact surface 4011 obtained by simulation to the bottom of the load-bearing block 4, is the axial projection width of the load-bearing contact surface 4011, is the inclination angle of the load-bearing contact surface 4011, is the centrifugal force of the locking structure at the rotational speed of the wheel disc 2, is the designed radial pre-tightening force.

[0051] Step 5: Take the intersection of the first limit range and the second limit range as the value range of the inclination angle of the load-bearing contact surface 4011.

[0052] In this embodiment, by comprehensively considering the centrifugal force generated by the locking structure during high-speed rotation, the designed pre-tightening force of the load-bearing bolt 5, and the material strength of the load-bearing block 4, the inclination angle of the load-bearing contact surface 4011 is designed to ensure that the load-bearing contact surface 4011 can not only resist the action of the centrifugal force but also be within the allowable range of the material strength, thereby improving the reliability and safety of the entire locking structure.

[0053] Based on the same inventive concept, this embodiment also provides a circumferential tenon rotor locking structure design system in a disk separation structure for implementing the design method, including:

[0054] A centrifugal force analysis module for analyzing and obtaining the centrifugal force of the locking structure according to the structural dimensions of the load-bearing block 4 and the load-bearing bolt 5 and the rotational speed of the disk 2.

[0055] A first analysis module for adjusting the radial height of the load-bearing block 4 in the anti-rotation groove 1 by using the load-bearing bolt 5 to obtain the designed radial pre-tightening force after the load-bearing contact surface 4011 contacts the inner wall of the anti-rotation groove 1, and analyzing and obtaining the first limit range of the inclination angle of the load-bearing contact surface 4011 according to the centrifugal force, the upper limit value of the compressive strength of the material of the load-bearing block 4, and the contact extrusion area between the load-bearing contact surface 4011 and the inner wall of the anti-rotation groove 1.

[0056] A simulation analysis module for constructing an analysis model of the contact extrusion between the load-bearing contact surface 4011 and the inner wall of the anti-rotation groove 1, applying the centrifugal force and the designed radial pre-tightening force to the analysis model, and simulating and obtaining the vertical distance from the maximum shear action point on the load-bearing contact surface 4011 to the bottom of the load-bearing block 4.

[0057] A second analysis module for analyzing and obtaining the second limit range of the inclination angle of the load-bearing contact surface 4011 according to the vertical distance, the axial projection width of the load-bearing contact surface 4011, the designed radial pre-tightening force and centrifugal force, and the upper limit value of the shear strength of the material of the load-bearing block 4.

[0058] An inclination angle range determination module for taking the intersection of the first limit range and the second limit range as the value range of the inclination angle of the load-bearing contact surface 4011.

[0059] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A design method for the circumferential tenon rotor locking structure in a disc separation structure. The locking structure includes a rotation stopping groove, which is opened on the disc. The rotation stopping groove extends radially inward from the outer wall of the disc and is opened at the position of the disc corresponding to the circumferential tenon of the rotor blade. A load-bearing block is installed in the rotation stopping groove. An inclined load-bearing contact surface is provided on the circumferential edge of the load-bearing block, and the load-bearing contact surface is used to contact the inner wall of the rotation stopping groove. A limiting hole is provided on the lower edge plate of the rotor blade. The radially outer end of the load-bearing block extends radially into the limiting hole, and a threaded hole is provided on the load-bearing block along the radial direction. A load-bearing bolt is fitted in the threaded hole, and one end of the load-bearing bolt abuts and cooperates with the bottom of the rotation stopping groove to adjust the radial height of the load-bearing block in the rotation stopping groove. It is characterized in that, The design method includes: Analyzing and obtaining the centrifugal force of the locking structure according to the structural dimensions of the load-bearing block and the load-bearing bolt and the rotational speed of the wheel disc; Adjusting the radial height of the load-bearing block in the anti-rotation groove by using the load-bearing bolt to make the load-bearing contact surface contact with the inner wall of the anti-rotation groove, and obtaining the designed radial pre-tightening force. Then, according to the centrifugal force, the upper limit value of the compressive strength of the load-bearing block material, and the contact extrusion area between the load-bearing contact surface and the inner wall of the anti-rotation groove, analyzing and obtaining the first limit range of the inclination angle of the load-bearing contact surface; Constructing an analysis model of the contact extrusion between the load-bearing contact surface and the inner wall of the anti-rotation groove, applying the centrifugal force and the designed radial pre-tightening force to the analysis model, and simulating and obtaining the vertical distance from the maximum shear action point on the load-bearing contact surface to the bottom of the load-bearing block; According to the vertical distance, the axial projection width of the load-bearing contact surface, the designed radial pre-tightening force, the centrifugal force, and the upper limit value of the shear strength of the load-bearing block material, analyzing and obtaining the second limit range of the inclination angle of the load-bearing contact surface; Taking the intersection of the first limit range and the second limit range as the value range of the inclination angle of the load-bearing contact surface.

2. The design method of the circumferential tenon rotor locking structure in the disc separation structure according to claim 1, characterized in that, A limiting constriction is further provided at the opening of the anti-rotation groove to limit the load-bearing block in the anti-rotation groove.

3. The design method of the circumferential tenon rotor locking structure in the disc separation structure according to claim 2, characterized in that, The load-bearing block is of a T-shaped structure. The load-bearing block includes a load-bearing part arranged axially and a limiting part arranged radially. The limiting part is used to extend into the limiting hole. The load-bearing contact surfaces are symmetrically distributed on both axial sides of the load-bearing part. The threaded hole penetrates the load-bearing block radially.

4. The design method of the circumferential tenon rotor locking structure in the disc separation structure according to claim 3, characterized in that, The axial length of the load-bearing part is greater than the axial width of the limiting constriction, and the circumferential thickness of the load-bearing part is less than the axial width of the limiting constriction.

5. The design method of the circumferential tenon rotor locking structure in the disc separation structure according to any one of claims 1-4, characterized in that, The first limit range of the inclination angle of the load-bearing contact surface is obtained according to analysis, where is the inclination angle of the load-bearing contact surface, is the upper limit value of the compressive strength of the load-bearing block material, is the centrifugal force of the locking structure at the disk speed, is the designed radial pre-tightening force, is the extrusion contact area of the load-bearing contact surface.

6. The design method of the circumferential tenon rotor locking structure in the disc separation structure according to any one of claims 1-4, characterized in that, The second limit range of the inclination angle of the load-bearing contact surface is obtained according to analysis, where is the upper limit value of the shear strength of the load-bearing block material, is the vertical distance from the maximum shear action point on the load-bearing contact surface obtained by simulation to the bottom of the load-bearing block, is the axial projection width of the load-bearing contact surface, is the inclination angle of the load-bearing contact surface, is the centrifugal force of the locking structure at the wheel disc speed, is the designed radial pre-tightening force.

7. The design method of the circumferential tenon rotor locking structure in the disc separation structure according to any one of claims 1-4, characterized in that, The designed radial pre-tightening force after the load-bearing contact surface contacts the inner wall of the anti-rotation groove is obtained according to the analysis, where is the designed radial pre-tightening force, is the tightening torque of the load-bearing bolt, is the tightening torque coefficient of the load-bearing bolt, is the nominal diameter of the thread of the load-bearing bolt.

8. A circumferential tenon rotor locking structure design system in a disc separation structure, which is used to implement the design method described in any one of claims 1-4, and is characterized in that, It includes: A centrifugal force analysis module for analyzing and obtaining the centrifugal force of the locking structure according to the structural dimensions of the load-bearing block and the load-bearing bolt and the rotational speed of the wheel disc; A first analysis module for adjusting the radial height of the load-bearing block in the anti-rotation groove by using the load-bearing bolt to make the load-bearing contact surface contact with the inner wall of the anti-rotation groove, and obtaining the designed radial pre-tightening force. Then, according to the centrifugal force, the upper limit value of the compressive strength of the load-bearing block material, and the contact extrusion area between the load-bearing contact surface and the inner wall of the anti-rotation groove, analyzing and obtaining the first limit range of the inclination angle of the load-bearing contact surface; A simulation analysis module for constructing an analysis model of the contact extrusion between the load-bearing contact surface and the inner wall of the anti-rotation groove, applying the centrifugal force and the designed radial pre-tightening force to the analysis model, and simulating and obtaining the vertical distance from the maximum shear action point on the load-bearing contact surface to the bottom of the load-bearing block; A second analysis module for analyzing and obtaining the second limit range of the inclination angle of the load-bearing contact surface according to the vertical distance, the axial projection width of the load-bearing contact surface, the designed radial pre-tightening force, the centrifugal force, and the upper limit value of the shear strength of the load-bearing block material; An inclination angle range determination module for taking the intersection of the first limit range and the second limit range as the value range of the inclination angle of the load-bearing contact surface.

9. The circumferential tenon rotor locking structure design system in the disc separation structure according to claim 8, characterized in that, In the first analysis module, the first limit range of the inclination angle of the load-bearing contact surface is obtained according to analysis, where is the inclination angle of the load-bearing contact surface, is the upper limit value of the compressive strength of the load-bearing block material, is the centrifugal force of the locking structure at the wheel disc speed, is the designed radial pre-tightening force, is the extrusion contact area of the load-bearing contact surface; In the second analysis module, the second limit range of the inclination angle of the load-bearing contact surface is obtained according to analysis, where is the upper limit value of the shear strength of the load-bearing block material, is the vertical distance from the maximum shear action point on the load-bearing contact surface obtained by simulation to the bottom of the load-bearing block, is the axial projection width of the load-bearing contact surface, is the inclination angle of the load-bearing contact surface, is the centrifugal force of the locking structure at the wheel disc speed, is the designed radial pre-tightening force.

10. The circumferential tenon rotor locking structure design system in the disc separation structure according to claim 8, characterized in that, In the first analysis module, the designed radial pre-tightening force after the load-bearing contact surface contacts the inner wall of the anti-rotation groove is obtained according to analysis, where is the designed radial pre-tightening force, is the tightening torque of the load-bearing bolt, is the tightening torque coefficient of the load-bearing bolt, is the nominal diameter of the thread of the load-bearing bolt.

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