Lifting appliance and lifting method for blisk

Abstract

The invention relates to the technical field of aero-engine manufacturing, in particular to a lifting appliance and a lifting method of a blisk. The lifting appliance comprises a plurality of arc-shaped lifting plates and bushings, and clamping grooves are formed in the outer cylindrical surfaces of the arc-shaped lifting plates; the bushing is inserted into a through hole formed by the plurality of arc-shaped lifting plates, and the outer cylindrical surface of the bushing is propped against the inner arc surfaces of the arc-shaped lifting plates; and a hoisting hole is formed in the arc-shaped hoisting plate. During use, the method comprises the steps that S1, the multiple arc-shaped lifting plates are inserted into a center hole of a hub of the blisk, and the clamping grooves of the arc-shaped lifting plates are clamped on the hub; s2, a lining cylinder is inserted into a through hole jointly defined by the multiple arc-shaped lifting plates, and the outer cylindrical surface of the lining cylinder abuts against the inner arc surfaces of the arc-shaped lifting plates; and S3, a lifting rope is installed in a lifting hole of the arc-shaped lifting plate, and lifting can be conducted. The lifting appliance provided by the invention is suitable for lifting the blisk, and is simple in structure and convenient to operate.

Description

Technical Field

[0001] The invention relates to the technical field of aviation engine manufacturing, and in particular to a lifting device and a lifting method for an integral blade disk. Background Art

[0002] Combination Figure 1 The diagram below shows a schematic diagram of a blisk. The weight of the blisk is generally 25-50KG, the diameter is generally 600-700mm, the blades are evenly distributed around the circumference, there are no lifting holes, and it is difficult to lift or move it manually, which poses a great safety and quality hazard during the manufacturing or transportation process.

[0003] Regarding the lifting device of the integral blade disk, the prior art, such as the patent with announcement number CN210594904U, discloses a universal clamp for lifting the integral blade disk of a large fan. The workpiece is lifted by the lining method and the lever clamping principle. The locking table is lifted by rotating the lifting screw. Under the action of the locking table, the lower end of the clamping block rotates outward and the upper end rotates in the spherical groove, so that the clamping block is tilted and fits tightly with the inner wall surface of the shaft neck of the integral blade disk, thereby achieving the clamping of the integral blade disk.

[0004] The above-mentioned prior art slings are not suitable for Figure 1 Lifting of the blisk is shown. Summary of the invention

[0005] The main purpose of the present invention is to provide a lifting device and a lifting method for an integral blade disk, aiming to solve the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, on the one hand, the present invention proposes a hanger for an integral blade disk, comprising a plurality of arc-shaped hanger plates and a bushing, wherein a slot is arranged on the outer cylindrical surface of the arc-shaped hanger plate; the bushing is inserted into a through hole jointly surrounded by the plurality of arc-shaped hanger plates, and the outer cylindrical surface of the bushing is against the inner arc surface of the arc-shaped hanger plate; and a hanging hole is arranged on the arc-shaped hanger plate.

[0007] Preferably, a first arc-shaped protrusion and a second arc-shaped protrusion are integrally formed on the outer cylindrical surface of the arc-shaped hanging plate, and the two are spaced apart from each other to form the slot.

[0008] Preferably, a plurality of pin holes are provided on the side wall of the bushing, and cylindrical pins are inserted into the pin holes; the cylindrical pins abut against the end surface of the arc-shaped hanging plate.

[0009] Preferably, a transition fit is adopted between the cylindrical pin and the pin hole.

[0010] Preferably, the arc-shaped hanging plates are formed by cutting and processing annular parts, and in a top view, the arc length of each arc-shaped hanging plate is 1 / 4 to 1 / 3 of the entire circle.

[0011] Preferably, the arc length of the arc-shaped hanging plate is 1 / 4 of the full circle, and the number of the arc-shaped hanging plates is two.

[0012] Preferably, the center hole of the liner is a stepped hole, and a step is formed at the position of the upper end hole.

[0013] Preferably, a chamfer is provided at the lower edge of the outer cylindrical surface of the liner.

[0014] On the other hand, the present invention also provides a method for lifting an integral blade disk, using the above-mentioned lifting device, comprising the following steps:

[0015] S1. Insert a plurality of arc-shaped hanging plates into the central hole of the hub of the integral blade disk, and make the slots of the arc-shaped hanging plates clamped on the hub;

[0016] S3, inserting the liner into the through hole surrounded by the plurality of arc-shaped hanging plates, and the outer cylindrical surface of the liner abuts against the inner arc surface of the arc-shaped hanging plates;

[0017] S4. Install the lifting rope in the lifting hole of the arc-shaped hanging plate to start lifting.

[0018] Preferably, in step S2, after the bushing is inserted into the through hole formed by a plurality of arc-shaped hangers, a plurality of cylindrical pins are inserted on the side wall of the bushing so that the cylindrical pins rest against the two end surfaces of the arc-shaped hangers and rest on the top surface of the hub.

[0019] Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows:

[0020] (1) The lifting device provided by the present invention is suitable for lifting the integral blade disk, has a simple structure and is easy to operate.

[0021] (2) By adopting the lifting device provided by the present invention, when in use, the arc-shaped hanging plate is inserted into the central hole of the hub of the integral blade disk, and the slot of the arc-shaped hanging plate is clamped on the hub. The outer cylindrical surface of the liner is pressed against the inner curved surface of the arc-shaped hanging plate, which can prevent the arc-shaped hanging plate from radially moving and loosening during the lifting process, thereby ensuring the reliability of the lifting.

[0022] (3) In the present invention, by inserting a cylindrical pin into the pin hole of the bushing, every two cylindrical pins abut against the two end surfaces of the arc-shaped hanger plate, which can limit the circumferential position of the arc-shaped hanger plate and avoid circumferential movement of the arc-shaped hanger plate during lifting, thereby further ensuring the reliability of lifting.

[0023] (4) In the present invention, the cylindrical pin is placed on the top surface of the wheel hub, which can limit the downward sliding of the liner during the lifting process, so that the outer cylindrical surface of the liner always rests on the inner curved surface of the curved hanger plate, thereby preventing the curved hanger plate from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 the structures shown in these drawings without paying creative work.

[0025] Figure 1 is a schematic diagram of the integral blade disk;

[0026] Figure 2 This is a schematic diagram of the lifting device provided by the present invention lifting the blisk;

[0027] Figure 3 for Figure 2 Partial view from the middle A direction;

[0028] Figure 4 It is a main cross-sectional view of the arc-shaped hanging plate in the present invention;

[0029] Figure 5 It is a left side view of the arc hanging plate in the present invention;

[0030] Figure 6 A top view of the arc-shaped hanging plate in the present invention;

[0031] Figure 7 It is a cross-sectional view of the liner in the present invention.

[0032] Explanation of the accompanying drawings: 1. Arc-shaped hanging plate; 1a. Slot; 1b. Inner arc surface; 1c. Lifting hole; 1d. First arc-shaped protrusion; 1e. Second arc-shaped protrusion; 2. Bushing; 2a. Pin hole; 2b. Step; 2c. Chamfer; 3. Cylindrical pin; 100. Hub. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, 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.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0036] Combination Figures 2 to 7 As shown, on the one hand, this embodiment provides a hanger for an integral blade disk including a plurality of arc-shaped hanger plates 1 and a liner 2, a slot 1a is provided on the outer cylindrical surface of the arc-shaped hanger plate 1; the liner 2 is inserted into a through hole jointly surrounded by the plurality of arc-shaped hanger plates 1, and the outer cylindrical surface of the liner 2 rests on the inner curved surface 1b of the arc-shaped hanger plate 1; a hanging hole 1c is provided on the arc-shaped hanger plate 1.

[0037] Combination Figure 4 As shown, a first arc-shaped protrusion 1d and a second arc-shaped protrusion 1e are integrally formed on the outer cylindrical surface of the arc-shaped hanging plate 1, and the two are arranged at an interval up and down to form the clamping groove 1a. When in use, the arc-shaped hanging plate 1 is inserted into the central hole of the hub 100 of the integral blade disk, and the clamping groove 1a is clamped on the hub 100, specifically, the hub 100 is clamped between the first arc-shaped protrusion 1d and the second arc-shaped protrusion 1e.

[0038] Combination Figure 3 , Figure 7 As shown, a plurality of pin holes 2a are provided on the side wall of the liner 2, and cylindrical pins 3 are inserted into the pin holes 2a; the cylindrical pins 3 abut against the end faces of the arc-shaped hanging plate 1. Every two cylindrical pins 3 abut against the end faces of the arc-shaped hanging plate 1, which can limit the circumferential position of the arc-shaped hanging plate 1, avoid the circumferential movement of the arc-shaped hanging plate 1 during lifting, and ensure the reliability of lifting.

[0039] In order to facilitate the insertion and removal of the cylindrical pin 3, a transition fit is adopted between the cylindrical pin 3 and the pin hole 2a. The transition fit allows a certain clearance or interference during the assembly process, which makes the parts easier to install and remove, and reduces the difficulty of assembly and disassembly.

[0040] Combination Figure 6 As shown, the arc-shaped hanging plate 1 is formed by cutting a ring-shaped part, and in the top view, the arc length of each arc-shaped hanging plate 1 is 1 / 4 to 1 / 3 of the whole circle. In order to facilitate the processing of the first arc-shaped protrusion 1d and the second arc-shaped protrusion 1e, the first arc-shaped protrusion 1d and the second arc-shaped protrusion 1e are turned by a ring-shaped part, and then the entire ring-shaped part is cut to form a single arc-shaped hanging plate 1.

[0041] In this embodiment, the arc length of the arc hanging plate 1 is 1 / 4 of the full circle, that is, the angle α of the arc hanging plate 1 is 90 degrees. There are two arc hanging plates 1.

[0042] Combination Figure 7 As shown, the center hole of the liner 2 is a stepped hole, and a step 2b is formed at the upper end of the hole. When inserting the liner 2 into the through hole surrounded by multiple arc-shaped hanging plates 1, the operator can hold the step 2b with his back and slowly lower the liner 2 for insertion. Therefore, the purpose of setting the step 2b is to facilitate the operation of the workers.

[0043] Combination Figure 7 As shown, a chamfer 2c is provided at the lower edge of the outer cylindrical surface of the liner 2. The chamfer 2c plays a guiding role, making it easier to insert the liner 2 into the through hole surrounded by the plurality of arc-shaped hanging plates 1.

[0044] On the other hand, this embodiment also provides a method for lifting an integral blade disk, using the above-mentioned lifting device, comprising the following steps:

[0045] S1, inserting a plurality of arc-shaped hanging plates 1 into the central hole of the hub 100 of the integral blade disk, and making the slots 1a of the arc-shaped hanging plates 1 clamped on the hub 100;

[0046] S3, inserting the liner 2 into the through hole surrounded by the plurality of arc-shaped hanging plates 1, and the outer cylindrical surface of the liner 2 abuts against the inner arc surface 1b of the arc-shaped hanging plates 1;

[0047] S4. Install the lifting rope in the lifting hole 1c of the arc-shaped hanging plate 1 to start lifting.

[0048] In step S2, after the bushing 2 is inserted into the through hole formed by the plurality of arc-shaped hanging plates 1, a plurality of cylindrical pins 3 are inserted into the side wall of the bushing 2, so that the cylindrical pins 3 are against the two end surfaces of the arc-shaped hanging plates 1, and the cylindrical pins 3 are placed on the top surface of the hub 100. The cylindrical pins 3 play two roles. One is to limit the circumferential position of the arc-shaped hanging plate 1 to prevent the arc-shaped hanging plate 1 from circumferential movement during lifting. The other is to limit the bushing 2 from sliding downward to prevent the bushing 2 from sliding out and causing the arc-shaped hanging plate 1 to loosen.

[0049] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A blisk hanger, characterized in that: The invention comprises a plurality of arc-shaped hanging plates (1) and a bushing (2), wherein a slot (1a) is arranged on the outer cylindrical surface of the arc-shaped hanging plate (1); the bushing (2) is inserted into a through hole surrounded by the plurality of arc-shaped hanging plates (1), and the outer cylindrical surface of the bushing (2) abuts against the inner curved surface (1b) of the arc-shaped hanging plate (1); and a hanging hole (1c) is arranged on the arc-shaped hanging plate (1).

2. A blisk hanger as claimed in claim 1, characterized in that: A first arc-shaped protrusion (1d) and a second arc-shaped protrusion (1e) are integrally formed on the outer cylindrical surface of the arc-shaped hanging plate (1), and the two are arranged at an interval up and down to form the clamping groove (1a).

3. The blisk hanger according to claim 1, characterized in that: A plurality of pin holes (2a) are provided on the side wall of the bushing (2), and cylindrical pins (3) are inserted into the pin holes (2a); the cylindrical pins (3) are pressed against the end surface of the arc-shaped hanging plate (1).

4. The blisk hanger according to claim 1, characterized in that: A transition fit is adopted between the cylindrical pin (3) and the pin hole (2a).

5. The blisk hanger according to claim 1, characterized in that: The arc-shaped hanging plate (1) is formed by cutting and processing an annular piece. In a top view, the arc length of each arc-shaped hanging plate (1) is 1 / 4 to 1 / 3 of the entire circle.

6. A blisk hanger as claimed in claim 5, characterized in that: The arc length of the arc-shaped hanging plate (1) is 1 / 4 of the full circle, and the number of the arc-shaped hanging plates (1) is two.

7. The blisk hanger according to claim 1, characterized in that: The central hole of the liner (2) is a stepped hole, and a step (2b) is formed at the position of the upper end hole.

8. The blisk hanger according to claim 1, characterized in that: A chamfer (2c) is provided at the lower edge of the outer cylindrical surface of the liner (2).

9. A method for lifting an integral blade disk, characterized in that: The method of using the sling according to any one of claims 1 to 8 comprises the following steps: S1, inserting a plurality of arc-shaped hanging plates (1) into the central hole of the hub (100) of the integral blade disk, and making the clamping grooves (1a) of the arc-shaped hanging plates (1) clamped on the hub (100); S3, inserting the liner (2) into the through hole formed by the plurality of arc-shaped hanging plates (1), and the outer cylindrical surface of the liner (2) abuts against the inner arc surface (1b) of the arc-shaped hanging plates (1); S4. Install a lifting rope in the lifting hole (1c) of the arc-shaped hanging plate (1) to start lifting.

10. A method for lifting a blisk as claimed in claim 9, characterized in that: In step S2, after the bushing (2) is inserted into the through hole formed by the plurality of arc-shaped hangers (1), a plurality of cylindrical pins (3) are inserted into the side wall of the bushing (2), so that the cylindrical pins (3) are against the two end surfaces of the arc-shaped hangers (1), and the cylindrical pins (3) are placed on the top surface of the hub (100).

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