Blade body clamping device for disassembling interlocking blades

Abstract

The blade body clamping device comprises a hook plate and a guide block fixed to the top of the hook plate, the inner molded surface, attached to the blade, of the hook plate is matched with an arc-shaped blade body of the blade, a groove bent upwards is formed in the bottom of the hook plate, a sliding groove formed in the height direction is formed in the guide block, a handle is fixed to the upper portion of the guide block, and the handle is fixed to the lower portion of the hook plate. A pressing block is movably connected into the sliding groove through a spring, the two ends of the spring are connected with the bottom face of the handle and the upper surface of the pressing block respectively, a V-shaped groove matched with the upper edge of the blade is formed in the bottom of the pressing block, the blade is fixed through matching of the V-shaped groove, the inner molded face of the hook plate and the groove, and a fastener extending into the sliding groove and used for fixing the pressing block is arranged on the side face of the guide block. The clamping device is simple in structure and convenient to operate, the blade body can be quickly positioned and clamped, great convenience is brought to the disassembly process of the blade, the labor intensity is reduced, the working efficiency is improved, and meanwhile the operation stability in the disassembly process of the blade is also guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of aero-engine blade disassembly, in particular to a blade body clamping device for disassembling interlocked blades. Background Art

[0002] The aircraft engine interlocking fan rotor blade assembly consists of a fan disk, rotor blades, and an outer casing. Figure 1 As shown in the figure. The blades are connected to the fan disk with a dovetail tenon structure, and the damping bosses on both sides of the blade bodies of adjacent blades overlap each other. The damping bosses of adjacent blades overlap each other, and there is an angle between the blade body and the tenon to form a full circle of blade interlocking, which plays a role in alleviating blade vibration when the engine is working.

[0003] At present, the interlocking blades are disassembled manually, which requires using backpack straps to fix them one by one on the blades, and then inserting a pry bar into the backpack straps. Using the edges of the first and second level disks of the fan as fulcrums, each blade is pulled out counterclockwise by the lever principle, and the pulling is repeated for multiple circles until all the blades are out of the mortise and tenon grooves and then separated. This disassembly method is inefficient, labor-intensive, time-consuming and labor-intensive, resulting in a large amount of labor costs and waste of assembly cycles. In addition, the size of the decomposition force in the grading process depends on the operator's experience and hand feeling. The height of each pulling is uncontrollable, and the pulled blade damping platform will easily damage the blade body of the next blade. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a blade body clamping device for disassembling interlocked blades to solve the above-mentioned problems.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A blade body clamping device for disassembling interlocked blades, comprising a hook plate and a guide block fixed on the top of the hook plate, the inner surface of the hook plate in contact with the blade cooperates with the curved blade body of the blade, an upwardly curved groove is provided at the bottom of the hook plate, a slide groove arranged along the height direction is provided in the guide block, and a handle is fixed above the guide block, a pressure block is movably connected to the slide groove through a spring, two ends of the spring are respectively connected to the bottom surface of the handle and the upper surface of the pressure block, a V-shaped groove is provided at the bottom of the pressure block to cooperate with the upper edge of the blade, the blade is fixed by the cooperation of the V-shaped groove, the inner surface of the hook plate and the groove, and a fastener extending into the slide groove for fixing the pressure block is provided on the side of the guide block.

[0007] In the above invention, further, a protective plate is fitted and fixed on the inner surface of the hook plate, an upwardly curved groove is also provided on the bottom of the protective plate, and threaded holes and screws for fixing are provided on the back of the guide block and the top of the protective plate and the hook plate in a one-to-one correspondence.

[0008] In the above invention, further, the protective plate and the pressing block are both made of polyamide, and the thickness of the protective plate is 5 mm.

[0009] In the above invention, further, the hook plate is made of metal.

[0010] In the above invention, further, a countersunk screw for fixing the protective plate and the hook plate is provided at one end of the protective plate and the hook plate near the groove.

[0011] In the above invention, further, a locking groove is provided on the side of the pressure block near the fastener, a gasket is pasted in the locking groove, the fastener is a locking screw, and the gasket extends through the side of the guide block into the locking groove and is pressed against the gasket.

[0012] In the above invention, further, the handle includes a connecting plate fixedly connected to the top surface of the guide block and a ball rod fixed on the connecting plate.

[0013] The beneficial effects of the present invention are:

[0014] In order to achieve rapid and quality-preserving decomposition of interlocking blades, the present invention provides a blade body clamping device for decomposing interlocking blades, which can realize rapid clamping and fixing of the clamping device on the blade profile, and use other grasping equipment to photograph and identify and grasp the blades to clamp the handle on the blade body clamping device, so that the force acting on each blade when decomposing the blades is consistent, completing the extraction and decomposition action of the blades, avoiding damage to the blades, and improving the decomposition efficiency. It has a simple structure, is easy to install, and has high stability and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the interlocking fan rotor blade structure;

[0016] Figure 2 A schematic diagram of the clamping device of the present invention installed on a blade;

[0017] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 4 is a side view of the clamping device of the present invention;

[0019] Figure 5 It is a cross-sectional view of AA of the present invention;

[0020] Figure 6 It is a schematic diagram of the disassembled structure of the clamping device of the present invention.

[0021] In the figure, 1-protective plate, 2-handle, 21-connecting plate, 22-ball rod, 3-pressure block, 4-guide block, 5-gasket, 6-hook plate, 7-tightening screw, 8-countersunk screw, 9-spring, 10-slide groove, 11-V-groove, 12-locking groove, 13-blade. DETAILED DESCRIPTION

[0022] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0023] Please refer to the attached Figure 2-5 As shown, a blade body clamping device for disassembling interlocked blades comprises a hook plate 6 and a guide block 4 fixed on the top of the hook plate 6, wherein the inner surface of the hook plate 6 abutting against the blade 13 matches the arc-shaped blade body of the blade 13, and an upwardly curved groove is provided at the bottom of the hook plate 6 so that the lower edge of the blade 13 can be just engaged in the groove;

[0024] The guide block 4 is provided with a slide groove 10 arranged in the height direction, and a handle 2 is fixed on the guide block 4, and the handle 2 drives the entire clamping device and the clamped blade 13 to move together. The slide groove 10 is movably connected with a pressure block 3 through a spring 9. Figure 5 As shown, the two ends of the spring 9 are respectively connected to the bottom surface of the handle 2 and the upper surface of the pressure block 3, so that the pressure block 3 can move up and down in the slide groove 10 through the spring 9. The bottom of the pressure block 3 is provided with a V-shaped groove 11 that cooperates with the upper edge of the blade 13. When clamping and fixing the blade 13, the upper edge of the blade 13 is clamped in the V-shaped groove 11. The blade 13 is clamped and fixed by the cooperation of the V-shaped groove 11, the inner surface of the hook plate 6 and the groove. The side of the guide block 4 is provided with a fastener extending into the slide groove 10 for fixing the pressure block 3.

[0025] Among them, the hook plate 6 is made of metal material to ensure that it has sufficient rigidity and strength in the process of clamping the blade 13, so that the blade 13 will not be deformed when being decomposed.

[0026] Please refer to the attached Figure 4 and 6As shown, preferably, in order to prevent the hook plate 6 from scratching the surface of the blade 13 when clamping the blade 13, a protective plate 1 is fixed to the inner surface of the hook plate 6, and the bottom of the protective plate 1 is also provided with an upwardly curved groove, that is, the inner surface of the protective plate 1 is the same as the inner surface of the hook plate 6, and the surface of the protective plate 1 is formed by offsetting the blade body by 0.3mm outward; the protective plate 1 and the pressing block 3 are both made of polyamide and are made of 3D printing technology. They are well fitted and positioned with the blade body surface, have a small size, and are easy to install. The thickness of the protective plate 1 is 5mm, which can ensure that the clamping device has sufficient rigidity and strength during the decomposition process of clamping the blade 13, and will not scratch the surface of the blade 13.

[0027] The back of the guide block 4 and the tops of the protective plate 1 and the hook plate 6 are all provided with threaded holes and screws for fixing in a one-to-one correspondence. The guide block 4, the protective plate 1 and the hook plate 6 are fixed by multiple threaded holes and screws to form an integral clamping device.

[0028] In order to further improve the fitting stability of the protection plate 1 and the hook plate 6, a countersunk screw 8 for fixing the protection plate 1 and the hook plate 6 is provided at one end of the protection plate 1 and the hook plate 6 near the groove.

[0029] A locking groove 12 is provided on the side of the pressure block 3 near the fastener, and a gasket 5 is pasted in the locking groove 12. The fastener is a locking screw 7. The gasket 5 passes through the side of the guide block 4 and extends into the locking groove 12 and is pressed against the gasket 5. The gasket 5 can prevent the locking screw 7 from crushing the pressure block 3 and increase the friction between the locking screw 7 and the pressure block 3.

[0030] The handle 2 includes a connecting plate 21 fixedly connected to the top surface of the guide block 4 and a ball rod 22 fixed on the connecting plate 21. The ball rod 22 has a diameter of 20 mm. Firstly, the position of each blade 13 and the corresponding clamping device can be identified by taking a photo through the shape of the ball rod 22. Secondly, it is convenient for the electric clamp to grasp the entire clamping device through the ball rod 22, thereby driving the blade 13 to move and complete the decomposition step by step.

[0031] Specific working process:

[0032] First, press the pressing block 3 into the guide block 4, the pressing block 3 compresses the spring 9, locks the side tightening screw 7, and then inserts the entire clamping device between the two blades 13, so that the groove at the bottom of the protective plate 1 hooks the exhaust edge of the blade 13 in front of it, and the inner surface of the protective plate 1 fits well with the blade 13; then, loosen the side tightening screw 7, the pressing block 3 is ejected by the spring 9, and the V-shaped groove 11 at the bottom of the pressing block 3 presses against the intake edge of the blade 13, thereby completing the fixing of the blade body clamping device on the blade 13. When the clamping device is installed on each blade 13, the blade 13 decomposition process can be started by the robot;

[0033] After the blade 13 is disassembled from the fan disk, the single blade 13 and the clamping device are held in hand as a whole, and the pressing block 3 is pressed so that the blade 13 can be taken out from the groove and the V-shaped groove 11, thereby realizing the disassembly of the blade 13 and the blade body clamping device.

[0034] The clamping device in the present invention has a simple structure and is easy to operate. It can quickly position and clamp the blade 13, which greatly facilitates the decomposition process of the blade 13, reduces labor intensity, and improves work efficiency. At the same time, the stability of the operation during the decomposition process of the blade 13 is also guaranteed.

[0035] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0036] The above-mentioned embodiments only express the specific implementation of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A blade clamping device for disassembling interlocked blades, characterized in that: The invention comprises a hook plate (6) and a guide block (4) fixed on the top of the hook plate (6); the inner surface of the hook plate (6) in contact with the blade (13) matches the arc-shaped blade body of the blade (13); the bottom of the hook plate (6) is provided with an upwardly curved groove; the guide block (4) is provided with a slide groove (10) arranged along the height direction; a handle (2) is fixed above the guide block (4); a pressure block (3) is movably connected to the slide groove (10) through a spring (9); the two ends of the spring (9) are respectively connected to the bottom surface of the handle (2) and the upper surface of the pressure block (3); the bottom of the pressure block (3) is provided with a V-shaped groove (11) matching the upper edge of the blade (13); the blade (13) is fixed by the matching of the V-shaped groove (11), the inner surface of the hook plate (6) and the groove; the side of the guide block (4) is provided with a fastener extending into the slide groove (10) for fixing the pressure block (3).

2. A blade body clamping device for disassembling interlocked blades according to claim 1, characterized in that: The inner surface of the hook plate (6) is fitted and fixed with a protective plate (1), and the bottom of the protective plate (1) is also provided with an upwardly curved groove. The back of the guide block (4) and the top of the protective plate (1) and the hook plate (6) are all provided with threaded holes and screws for fixing in a one-to-one correspondence.

3. A blade body clamping device for disassembling interlocked blades according to claim 2, characterized in that: The protective plate (1) and the pressing block (3) are both made of polyamide, and the thickness of the protective plate (1) is 5 mm.

4. The blade body clamping device for disassembling interlocked blades according to claim 2, characterized in that: The hook plate (6) is made of metal.

5. The blade body clamping device for disassembling interlocked blades according to claim 2, characterized in that: The ends of the protection plate (1) and the hook plate (6) near the groove are also provided with countersunk screws (8) for fixing the protection plate (1) and the hook plate (6).

6. The blade body clamping device for disassembling interlocked blades according to claim 1, characterized in that: The side of the pressure block (3) near the fastener is provided with a locking groove (12), a gasket (5) is pasted in the locking groove (12), the fastener is a top screw (7), and the gasket (5) passes through the side of the guide block (4) and extends into the locking groove (12) and is pressed against the gasket (5).

7. The blade body clamping device for disassembling interlocked blades according to claim 1, characterized in that: The handle (2) comprises a connecting plate (21) fixedly connected to the top surface of the guide block (4) and a ball rod (22) fixed on the connecting plate (21).

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