Rotor assembly assembling tool and method

Abstract

The invention discloses a rotor assembly assembling tool and method, and belongs to the technical field of aircraft assembling, the assembling tool is used for assembling a rotor assembly, and the assembling tool comprises a lower cover plate, an upper cover plate, a positioning guide column, a hub positioning block, a lower pressing block and an angle seat assembly; the rotor assembly comprises blades, a hub, a bottom pressing ring and an upper pressing ring. The hub is positioned and fixed through the lower cover plate, the lower pressing block and the hub positioning block, then the blades are fixed through the angle seat assembly, the assembly efficiency of the rotor assembly of the electric ducted fan system is remarkably improved, the assembly tool is more suitable for a glue joint assembly method, the structural weight of the assembly can be effectively reduced, the lightweight degree is improved, and the production cost is reduced. The high-temperature environment in the working process of the rotor assembly is better adapted, the problems of stress concentration and the like of a traditional mechanical connection mode are solved, and noise and vibration in the using process can be greatly reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of aircraft assembly, and in particular relates to a rotor assembly assembly tool and method. Background Art

[0002] In recent years, with the increasing requirements for long-distance transportation, electric aircraft have received widespread attention as a green and efficient means of transportation. New requirements have been put forward for the next generation of commercial aircraft in terms of reducing emissions and noise control, and specific development goals have been set. Therefore, electric propulsion ducted fan technology has achieved unprecedented development in recent years.

[0003] The rotor assembly is the core part of the ducted fan system and plays a key role in the system performance. The rotor assembly is generally composed of fan blades and a rotating shaft, which generates airflow through rotation to push the air. In the design and assembly process of the rotor assembly in the prior art, there are usually problems such as the heavy structural weight of the blades, strong noise and vibration of the rotor assembly, and stress concentration in the traditional mechanical connection method. These problems not only affect the overall performance and efficiency of the fan, but also increase maintenance and operating costs. Summary of the invention

[0004] In view of this, the present invention discloses a rotor assembly assembly tool and method.

[0005] The present invention adopts the following technical solution:

[0006] A rotor assembly tool, the assembly tool is used for assembling the rotor assembly, the assembly tool comprises: a lower cover plate, an upper cover plate, a positioning guide column, a hub positioning block, a lower clamping block and an angle seat assembly; the rotor assembly comprises: blades, a hub, a bottom pressure ring and an upper pressure ring;

[0007] The blades are radially arranged on the periphery of the hub, and the upper pressure ring and the bottom pressure ring are respectively sleeved on the upper and lower ends of the hub;

[0008] The bottom end of the positioning guide column is connected and fixed to the central position of the lower cover plate, and the top end of the positioning guide column is detachably connected to the central hole of the upper cover plate;

[0009] The wheel hub positioning block is fixedly arranged on the lower cover plate, the wheel hub positioning block is symmetrically distributed on the outside of the positioning guide column, and the wheel hub positioning block is used for positioning the wheel hub;

[0010] The lower pressing block is radially arranged around the periphery of the positioning guide column, the lower pressing block is around the periphery of the hub positioning block, the lower pressing block is detachably connected to the lower cover plate, and the lower pressing block is used to press and fix the bottom pressing ring on the lower cover plate;

[0011] The angle seat assembly is arranged on the periphery of the lower pressing block, the angle seat assembly is detachably connected to the lower cover plate, and the angle seat assembly is used to fix the tip of the blade.

[0012] Furthermore, a rubber pad is provided on the surface of the lower cover plate inside the lower pressing block.

[0013] Furthermore, the angle seat assembly includes: an angle seat, an angle seat pressure plate, an angle seat bolt and a step pin; the angle seat is connected and fixed to the lower cover plate by the angle seat bolt; the angle seat pressure plate is connected to the top of the angle seat by the step pin; the contact surface of the angle seat pressure plate and the angle seat forms a fitting surface, the fitting surface is used to press and fix the tip of the blade, and the fitting surface is consistent in shape with the contact position of the blade.

[0014] Furthermore, the upper cover plate is connected and fixed to the positioning guide pillars by means of clamping bolts.

[0015] Furthermore, the corner seat is provided with a positioning pin, and the positioning pin is used to pre-position the corner seat on the lower cover plate.

[0016] Furthermore, a pressure plate rubber is provided at the position of the fitting surface.

[0017] Furthermore, there are two wheel hub positioning blocks.

[0018] Furthermore, a buckle groove is provided on the periphery of the upper cover plate, and the buckle groove cooperates with the upper pressure ring.

[0019] Furthermore, the lower pressing block is provided with a bending buckle, and the bending buckle cooperates with the bottom pressing ring.

[0020] Furthermore, the rubber pad is rubber.

[0021] The assembly method of the above-mentioned assembly tool comprises the steps of:

[0022] S1 initial positioning of the wheel hub: initially position the wheel hub along the positioning guide column, place the bottom pressure ring on the outside of the bottom of the wheel hub, clamp it with the lower clamping block, rotate and adjust the angle of the wheel hub, and complete the positioning with the wheel hub positioning block;

[0023] S2 Install the blades. Apply structural glue to the connection between the bottom of the blade and the hub, the bottom pressure ring and the upper pressure ring. Insert the bottom side of the root of the blade into the groove formed by the hub and the bottom pressure ring. The tip of the blade is initially positioned by the angle seat. Install each set of blades according to the above steps.

[0024] S3 installs the upper cover plate, sleeves the upper pressure ring on the upper outer surface of the blade root, installs the upper cover plate and the clamping bolts, and the clamping bolts are not fully tightened in this step;

[0025] S4 is completely positioned, the angle seat pressure plate is installed, and it is tightened by the step pin to ensure the accurate positioning of the blade tip; at the same time, the clamping bolt is tightened to complete the assembly and positioning of the rotor assembly;

[0026] S5 glue cleaning, clean up the excess structural glue, keep the aerodynamic shape of the rotor assembly free of debris, and complete the assembly of the rotor assembly.

[0027] Beneficial effects of the present invention:

[0028] The present invention positions and fixes the hub through the lower cover plate, the lower clamping block and the hub positioning block, and then fixes the blades through the angle seat assembly. During the assembly of the rotor assembly, the requirements for rapid disassembly and assembly can be met, the assembly efficiency is improved, and the assembly efficiency of the rotor assembly of the electric ducted fan system is significantly improved. The assembly tool is more suitable for the assembly method of gluing, which can effectively reduce the weight of the component structure, improve the degree of lightweight, and is more suitable for the high temperature environment during the operation of the rotor assembly, avoiding the stress concentration of the traditional mechanical connection method and other problems, and can also greatly reduce the noise and vibration during use. Therefore, the rotor assembly assembly tool disclosed in the present invention has the characteristics of improving the aerodynamic efficiency of the fan, reducing noise, reducing vibration, and simplifying the assembly and maintenance process. The assembly tool can significantly improve the performance and reliability of the ducted fan system and bring significant economic benefits to related industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic diagram of the overall structure of the assembly tool of the present invention;

[0031] Figure 2 is a schematic structural diagram of a rotor assembly in the present invention;

[0032] Figure 3 It is a schematic diagram of the main structure of the lower cover plate and the upper cover plate of the assembly tool of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the corner seat assembly in the assembly tool of the present invention;

[0034] Figure 5 It is a schematic diagram of the initial positioning of the wheel hub during use of the assembly tool of the present invention;

[0035] Figure 6 This is a schematic diagram of installing blades in the use of the assembly tool of the present invention Figure 1 ;

[0036] Figure 7 This is a schematic diagram of installing blades in the use of the assembly tool of the present invention Figure 2 ;

[0037] Figure 8 It is a schematic diagram of installing the upper cover plate during use of the assembly tool of the present invention;

[0038] Fig. 9 It is a schematic diagram of complete positioning of the assembly tool of the present invention during use. DETAILED DESCRIPTION

[0039] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0040] It should be clear that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] A rotor assembly assembly tool, the assembly tool is used for assembling the rotor assembly, the assembly tool comprises: a lower cover plate 5, an upper cover plate 6, a positioning guide column 16, a hub positioning block 13, a lower clamping block 7 and an angle seat assembly; Figure 1 , 3 , 4; the rotor assembly comprises: a blade 1, a hub 2, a bottom pressure ring 3 and an upper pressure ring 4; as Figure 2 As shown;

[0043] The blades 1 are radially arranged on the periphery of the hub 2, and the upper pressure ring 4 and the bottom pressure ring 3 are respectively sleeved on the upper and lower ends of the hub 2; the root bottom surface of the blade 1 is connected to the hub 2 by gluing, and the root ends of the blade 1 are fixed to the bottom pressure ring 3 and the upper pressure ring 4 by gluing;

[0044] The bottom end of the positioning guide post 16 is connected and fixed to the central position of the lower cover plate 5, and the top end of the positioning guide post 16 is detachably connected to the central hole of the upper cover plate 6; Figure 3 As shown;

[0045] The hub positioning block 13 is fixedly disposed on the lower cover plate 5, and the hub positioning block 13 is symmetrically distributed outside the positioning guide column 16. The hub positioning block 13 is used for positioning the hub 2; Figure 3 As shown;

[0046] The lower pressing block 7 is radially arranged around the periphery of the positioning guide column 16, and the lower pressing block 7 is around the periphery of the hub positioning block 13. The lower pressing block 7 is detachably connected to the lower cover plate 5, and the lower pressing block 7 is used to press and fix the bottom pressing ring 3 on the lower cover plate 5;

[0047] The angle seat assembly is arranged on the periphery of the lower pressing block 7 , and the angle seat assembly is detachably connected to the lower cover plate 5 . The angle seat assembly is used to fix the outer end of the blade 1 .

[0048] Furthermore, a rubber pad 10 is provided on the surface of the lower cover plate 5 inside the lower pressing block 7 .

[0049] Furthermore, the angle seat assembly includes: an angle seat 8, an angle seat pressure plate 9, an angle seat bolt 12 and a step pin 14; the angle seat 8 is connected and fixed to the lower cover plate 5 by the angle seat bolt 12; the angle seat pressure plate 9 is connected to the upper part of the angle seat 8 by the step pin 14; the contact surface of the angle seat pressure plate 9 and the angle seat 8 forms a fitting surface, and the fitting surface is used to press and fix the outer end of the blade 1, and the fitting surface is consistent with the contact position shape of the blade 1. Figure 4 shown.

[0050] Furthermore, the upper cover plate 6 is connected and fixed to the positioning guide pillars 16 via clamping bolts 11 .

[0051] Furthermore, the corner seat 8 is provided with a positioning pin 15 , and the positioning pin 15 is used to pre-position the corner seat 8 on the lower cover plate 5 .

[0052] Furthermore, a pressure plate rubber 17 is provided at the position of the fitting surface.

[0053] Furthermore, there are two wheel hub positioning blocks 13.

[0054] Furthermore, a snap groove is provided around the upper cover plate 6 , and the snap groove cooperates with the upper pressure ring 4 .

[0055] Furthermore, the lower pressing block 7 is provided with a bending buckle, and the bending buckle cooperates with the bottom pressing ring 1.

[0056] Furthermore, the rubber pad 10 is rubber.

[0057] The assembly method of the above-mentioned assembly tool comprises the steps of:

[0058] S1 initial positioning of the wheel hub: preliminarily position the wheel hub 2 along the positioning guide column 16, place the bottom pressure ring 3 on the outer side of the bottom of the wheel hub, clamp it with the lower clamping block 7, rotate and adjust the angle of the wheel hub 2, and complete the positioning with the wheel hub positioning block 13;

[0059] S2: Install the blades. Apply structural glue to the connection between the bottom of the blade 1 and the hub 2, the bottom pressure ring 3 and the upper pressure ring 4. Insert the bottom side of the root of the blade 1 into the groove formed by the hub 2 and the bottom pressure ring 3. The tip of the blade 1 is initially positioned by the angle seat 8. Install each set of blades 1 according to the above steps.

[0060] S3 installs the upper cover plate, sleeves the upper pressure ring 4 on the upper outer surface of the root of the blade 1, installs the upper cover plate 6 and the clamping bolts 11, and the clamping bolts 11 are not completely tightened in this step;

[0061] S4 is completely positioned, the angle seat pressure plate 9 is installed, and it is tightened by the step pin 14 to ensure that the tip of the blade 1 is accurately positioned; at the same time, the clamping bolt 11 is tightened to complete the assembly and positioning of the rotor assembly;

[0062] S5: Clean the excess structural glue, keep the rotor assembly aerodynamic shape free of debris, and complete the rotor assembly assembly. Figure 5 , 6 , 7, 8, and 9.

[0063] Example 2

[0064] The rotor assembly proposed by the present invention comprises a blade 1 , a hub 2 , a bottom pressure ring 3 and an upper pressure ring 4 .

[0065] The bottom surface of the root of the rotor assembly blade 1 is connected to the hub 2 by gluing, and the two ends of the root are fixed to the bottom pressure ring 3 and the upper pressure ring 4 by gluing.

[0066] The rotor assembly tooling proposed in the present invention includes a lower cover plate 5, an upper cover plate 6, a lower clamping block 7, an angle seat 8, an angle seat clamping plate 9, a rubber pad 10, a clamping bolt 11, an angle seat bolt 12, a hub positioning block 13, a step pin 14, a positioning pin 15 and a positioning guide column 16.

[0067] The central hub positioning part is composed of a lower cover plate 5, an upper cover plate 6, a lower clamping block 7, a rubber pad 10, a clamping bolt 11, an angle seat bolt 12, a hub positioning block 13 and a positioning guide column 16.

[0068] In the radial direction, on the lower cover plate 5, the lower clamping block 7 is connected and fixed by the angle seat bolts 12, and the bottom pressure ring 3 is fixed inside, and the bottom edge of the hub 2 is nested inside the bottom pressure ring 3. The hub positioning block 13 is connected to the lower cover plate 5 by welding, and the internal reinforcement ribs of the hub 2 are positioned by two hub positioning blocks 13, and the positioning guide column 16 is positioned in cooperation with the internal connection hole of the hub 2 to ensure that the hub 2 does not rotate or move.

[0069] In the axial direction, the upper pressure ring 4 is embedded in the top edge of the hub 2, and the upper cover plate 6 is installed on the outside, and then the axial position of the hub is fixed by the tightening bolts 11.

[0070] The blade tip positioning part is composed of 10 groups of angle seat assemblies, and the angle seat assembly includes an angle seat 8, an angle seat pressure plate 9, a pressure plate rubber 17, an angle seat bolt 12, a step pin 14 and a positioning pin 15.

[0071] The angle seat 8 is connected and positioned with the lower cover plate 5 by means of the positioning pin 15 and the angle seat bolt 12 .

[0072] The blade tip is positioned by an angle seat 8 and an angle seat pressure plate 9. A pressure plate rubber 17 is attached to the contact position between the angle seat pressure plate 9 and the blade to prevent the blade from being damaged during the assembly process.

[0073] Example 3

[0074] The process of assembling the rotor assembly by the assembly tool of the present invention comprises:

[0075] (1) Initial wheel hub positioning

[0076] Preliminarily position the center hole of the wheel hub 2 along the positioning guide column 16, place the bottom pressure ring 3 on the outside of the bottom of the wheel hub, clamp it with the lower clamping block 7, rotate and adjust the angle of the wheel hub 2, and complete the positioning with the wheel hub positioning block 13.

[0077] (2) Install the blades

[0078] Apply structural glue to the connection position between the bottom of the blade 1 and the hub 2, the bottom pressure ring 3 and the upper pressure ring 4, and embed the bottom side of the root of the blade 1 into the groove formed by the hub 2 and the bottom pressure ring 3. The tip position of the blade is initially positioned by the angle seat 8, and then each group of blades 1 is installed according to the above steps.

[0079] (3) Install the upper cover

[0080] The upper pressing ring 4 is sleeved on the upper outer surface of the root of the blade 1, and the upper cover plate 6 and the clamping bolts 11 are installed. In this step, the clamping bolts are not completely tightened.

[0081] (4) Complete positioning

[0082] Install the angle seat pressure plate 9 and tighten it through the step pin 14 to ensure the accurate positioning of the blade tip; at the same time, tighten the clamping bolt 11 to complete the assembly and positioning of the rotor assembly.

[0083] (5) Clear glue

[0084] Clean up excess structural adhesive, keep the aerodynamic shape of the rotor assembly free of debris, and complete the rotor assembly process.

[0085] The present invention proposes a rotor assembly assembly tool and method, which can meet the needs of rapid disassembly and assembly during the rotor assembly process and improve assembly efficiency. The assembly method of the present invention is mainly adhesive bonding, which reduces the weight of the rotor assembly and improves the degree of lightweight. At the same time, it is more adaptable to the high temperature environment during the operation of the rotor assembly, avoids the stress concentration and other problems caused by traditional mechanical connections, and effectively reduces the noise and vibration transmission between structures.

[0086] The embodiments of the present invention are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A rotor assembly tool, the assembly tool is used for assembling a rotor assembly, characterized in that: The assembly tooling includes: a lower cover plate, an upper cover plate, a positioning guide column, a hub positioning block, a lower clamping block and an angle seat assembly; the rotor assembly includes: blades, a hub, a bottom pressure ring and an upper pressure ring; The blades are radially arranged on the periphery of the hub, and the upper pressure ring and the bottom pressure ring are respectively sleeved on the upper and lower ends of the hub; The bottom end of the positioning guide column is connected and fixed to the central position of the lower cover plate, and the top end of the positioning guide column is detachably connected to the central hole of the upper cover plate; The wheel hub positioning block is fixedly arranged on the lower cover plate, the wheel hub positioning block is symmetrically distributed on the outside of the positioning guide column, and the wheel hub positioning block is used for positioning the wheel hub; The lower pressing block is radially arranged around the periphery of the positioning guide column, the lower pressing block is around the periphery of the hub positioning block, the lower pressing block is detachably connected to the lower cover plate, and the lower pressing block is used to press and fix the bottom pressing ring on the lower cover plate; The angle seat assembly is arranged on the periphery of the lower pressing block, the angle seat assembly is detachably connected to the lower cover plate, and the angle seat assembly is used to fix the tip of the blade.

2. The assembly tool according to claim 1, characterized in that: A rubber pad is provided on the surface of the lower cover plate inside the lower pressing block.

3. The assembly tool according to claim 2, characterized in that: The angle seat assembly includes: an angle seat, an angle seat pressure plate, an angle seat bolt and a step pin; the angle seat is connected and fixed to the lower cover plate by the angle seat bolt; the angle seat pressure plate is connected to the top of the angle seat by the step pin; the contact surface of the angle seat pressure plate and the angle seat forms a fitting surface, and the fitting surface is used to press and fix the tip of the blade, and the fitting surface is consistent in shape with the contact position of the blade.

4. The assembly tool according to claim 3, characterized in that: The upper cover plate is connected and fixed to the positioning guide column by means of a clamping bolt.

5. The assembly tool according to claim 4, characterized in that: The corner seat is provided with a positioning pin, and the positioning pin is used to pre-position the corner seat on the lower cover plate.

6. The assembly tool according to claim 5, characterized in that: A pressure plate rubber is provided at the position of the fitting surface.

7. The assembly tool according to claim 6, characterized in that: There are two wheel hub positioning blocks.

8. The assembly tool according to claim 7, characterized in that: A buckle groove is provided on the periphery of the upper cover plate, and the buckle groove matches with the upper pressure ring.

9. The assembly tool according to claim 8, characterized in that: The lower pressing block is provided with a bending buckle, and the bending buckle cooperates with the bottom pressing ring.

10. The assembly method of the assembly tool according to any one of claims 1 to 9, characterized in that: The method comprises the steps of: S1 initial positioning of the wheel hub: initially position the wheel hub along the positioning guide column, place the bottom pressure ring on the outside of the bottom of the wheel hub, clamp it with the lower clamping block, rotate and adjust the angle of the wheel hub, and complete the positioning with the wheel hub positioning block; S2 Install the blades. Apply structural glue to the connection between the bottom of the blade and the hub, the bottom pressure ring and the upper pressure ring. Insert the bottom side of the root of the blade into the groove formed by the hub and the bottom pressure ring. The tip of the blade is initially positioned by the angle seat. Install each set of blades according to the above steps. S3 installs the upper cover plate, sleeves the upper pressure ring on the upper outer surface of the blade root, installs the upper cover plate and the clamping bolts, and the clamping bolts are not fully tightened in this step; S4 is completely positioned, the angle seat pressure plate is installed, and it is tightened by the step pin to ensure the accurate positioning of the blade tip; at the same time, the clamping bolt is tightened to complete the assembly and positioning of the rotor assembly; S5 glue cleaning, clean up the excess structural glue, keep the aerodynamic shape of the rotor assembly free of debris, and complete the assembly of the rotor assembly.

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