Interlocking type blade anti-falling device for blade disassembly

Abstract

The blade anti-falling device comprises an annular supporting block, a mounting groove hole is formed in the annular supporting block, the mounting groove hole and a fan rotor are coaxially arranged, and a plurality of positioning grooves are formed in the circumferential direction of the annular supporting block at equal intervals; the positioning grooves are formed above the mortises, the number of the positioning grooves is in one-to-one correspondence with the number of the blades, damping blocks are fixed in the positioning grooves, and the end faces A of the damping blocks extend out of the positioning grooves, are obliquely arranged and are used for laterally supporting the blade tenons; each blade tenon is correspondingly provided with one rubber block, the damping property of the rubber damping blocks is utilized, the blades are prevented from falling in the lifting process, meanwhile, outward support is provided for the blades, the blades are prevented from being clamped in the lifting process, the automatic split charging device for the interlocking blades can effectively complete the decomposition action, and the split charging efficiency is improved. And every two adjacent blades do not influence each other during decomposition, the structure is simple, installation is convenient, and high stability and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field, in particular to an interlocking blade decomposition blade anti-falling device. Background Art

[0002] The aircraft engine interlocking fan rotor blade assembly consists of a fan disk, rotor blades, and an outer casing. Figure 1 The blades are connected to the fan disk with a dovetail tenon structure. The damping bosses on both sides of the adjacent blades overlap each other, the damping platform 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] The blades are disassembled with the edges of the first and second level fan disks as the fulcrum. Each blade is pulled out counterclockwise, and the pulling is repeated for multiple circles until all the blades are out of the tenon and then separated. The top of the fan rotor is generally provided with a pressure cover for pressing the fan disk. When the disassembly device disassembles the interlocking blades, there is a gap between the tenon of the blade and the tenon of the fan disk. After the blade is lifted, the clamping claw that grabs the blade opens, and the blade will fall a certain displacement, affecting the completion of the automatic disassembly action of the blade. Moreover, because the blade is disassembled by repeated pulling for multiple circles, the lifting height of the blade in each circle is the same, and the blade falling a certain displacement will also affect the accuracy of the next time the clamp lifts the blade. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an interlocking blade disassembly blade anti-falling device to solve the above-mentioned problems.

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

[0006] A blade anti-fall device for interlocking blade disassembly, comprising an annular support block, a mounting slot hole being opened on the annular support block, the mounting slot hole being coaxially arranged with a fan rotor, a plurality of positioning slots being arranged at equal intervals in the circumferential direction of the annular support block, the positioning slots being placed above the tenon slots and being arranged one-to-one corresponding to the number of blades, a damping block being fixed in the positioning slot, the end face A of the damping block extending outside the positioning slot and being inclinedly arranged for laterally supporting the tenon of the blade.

[0007] In the above invention content, further, the upper surface of the annular support block is provided with a clamping member for preventing the annular support block from axial movement, and the clamping member includes four step screws arranged on the surface of the annular support block and a baffle symmetrically arranged on the upper edge of the mounting slot hole through the step screws, one end of the baffle is rotatably connected to a step screw through an axial hole, and the other end of the baffle is provided with a clamping groove and is clamped on the step screw through the clamping groove.

[0008] In the above invention, further, the baffle is an arc-shaped structure and the inner diameter formed between the two baffles is smaller than the diameter of the gland at the top end of the fan rotor, and the baffle is clamped between the gland and the annular support block.

[0009] In the above invention, further, the angle θ between the end surface A of the damping block and the vertical surface is 5° to 10°.

[0010] In the above invention, further, the upper base area of ​​the damping block is larger than the lower base area.

[0011] In the above invention, further, the damping block is made of rubber and has a Shore A hardness of HA35-45.

[0012] In the above invention, further, the thickness of the damping block is 5 mm to 6 mm.

[0013] In the above invention, further, the circumferential surface of the annular support block gradually decreases in diameter from bottom to top above the positioning groove to form an inclined surface B.

[0014] In the above invention, further, the inclined surface B is provided with a carrying hole.

[0015] The beneficial effects of the present invention are:

[0016] The anti-falling device arranges a rubber block corresponding to each blade tenon and utilizes the damping property of the rubber damping block to prevent the blade from falling during the lifting process. At the same time, it provides an outward support to the blade to prevent the blade from getting stuck during the lifting process, so that the interlocking blade automatic packaging device can effectively complete the decomposition action, and the adjacent blades do not affect each other during decomposition. The structure is simple, the installation is convenient, and the stability and reliability are high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of an impeller fan assembly;

[0018] Figure 2 It is a schematic diagram of the overall structure of the anti-falling device of the present invention;

[0019] Figure 3 It is a front cross-sectional view of the anti-fall device of the present invention;

[0020] Figure 4 A top view of the anti-fall device of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the annular support block of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the damping block of the present invention;

[0023] Figure 7 A schematic diagram of the anti-falling device of the present invention being installed on an impeller fan assembly;

[0024] Figure 8 for Figure 7 A partial enlarged view of middle A;

[0025] Fig. 9 It is a structural schematic diagram of the baffle of the present invention;

[0026] Fig.10 Schematic diagram of the stepped screw of the present invention.

[0027] In the figure, 1-annular support block, 2-damping block, 3-baffle, 4-step screw, 5-mounting slot, 6-positioning slot, 7-card slot, 8-handle hole. DETAILED DESCRIPTION

[0028] 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.

[0029] Please pay the monthly Figure 2-7 As shown, an interlocking blade disassembly blade anti-falling device comprises an annular support block, a mounting slot hole is formed on the annular support block, the mounting slot hole is coaxially arranged with a fan rotor, the annular support block is sleeved on the fan rotor through the mounting slot hole and is placed above the fan disk, and the annular support block and the entire fan assembly are pressed by a gland at the top end of the fan rotor to prevent axial movement when the blades are disassembled;

[0030] Among them, the annular support block is arranged with a number of positioning grooves at equal intervals on the circumference, such as the attached Figure 5 As shown, the positioning groove is placed above the tenon groove and is arranged one-to-one corresponding to the number of blades. A damping block is fixed in the positioning groove, and the damping block can be fixed in the positioning groove by pasting, that is, each blade is arranged with a damping block, so that when the blade is lifted during disassembly, the tenon of the blade can be aligned with each damping block one by one. The use of a single damping block does not affect the photography, measurement and extraction actions of the disassembly device, and can prevent the mutual influence of two adjacent blades when disassembling, causing the blades on both sides to fall;

[0031] As attached Figure 3 , 6As shown in 8, the end face A of the damping block extends outside the positioning groove and is inclined to laterally support the blade tenon, and the upper base area of ​​the damping block is larger than the lower base area, so that the end face A of the damping block is inclined outward from bottom to top to provide lateral support to the blade tenon, thereby preventing the blade from being suffocated and stuck due to an inward torque caused by the lifting position being biased towards the blade body when the blade is lifted.

[0032] The angle θ between the end face A of the damping block and the vertical plane is selected to be a suitable angle, so that the blade can be subjected to a uniform outward force during each lifting. If the taper is too small, it will not prevent the blade from falling; if the taper is too large, the blade will easily suffocate during the early lifting. After repeated tests and verifications, it is preferred that the taper be selected at an angle θ of 5° to 10° with the vertical direction.

[0033] In the above embodiment, preferably, the damping block is made of rubber and the Shore A hardness is most suitable when it is HA35-45. If the rubber damping block is too soft, it cannot prevent the blade from falling, and if it is too hard, it will create resistance to the lifting of the blade and it will not be convenient to take out the blade.

[0034] The thickness of the damping block is 5 mm to 6 mm. During the lifting process of the blade, the interference between the end surface A of the rubber damping block and the tenon of the blade is ensured to be 0.5 to 0.8 mm.

[0035] During the blade lifting process, the damping block provides a lateral support to the tenon, and at the same time, the tenon also provides an upward force to the damping block. In order to prevent the upward force from affecting the stability of the entire annular support block, a clamping member for preventing the annular support block from moving upward in the axial direction is provided on the upper surface of the annular support block;

[0036] As attached Figure 2 , 9 As shown in 10, the clamping member includes four step screws arranged on the surface of the annular support block and a baffle symmetrically arranged on the upper edge of the mounting slot hole through the step screws, two step screws form a group, one end of the baffle is rotatably connected to a step screw through an axial hole, and the step screw is used as the rotation axis of the baffle so that the baffle can rotate around the step screw. The other end of the baffle is provided with a slot and is clamped on the step screw through the slot. The baffle can be made of nylon.

[0037] As attached Figure 7As shown, the diameter of the gland itself must be larger than the diameter of the fan rotor and the mounting slot in order to compress the fan assembly and the entire anti-fall device. Preferably, the baffle is an arc-shaped structure and the inner diameter formed between the two baffles is smaller than the diameter of the gland at the top of the fan rotor, so that the baffle can be clamped between the gland and the upper surface of the annular support block, thereby preventing the annular support block from moving axially upward under the interaction between the damping block and the blade, thereby improving the stability of the anti-fall device. Specifically, the baffle is rotated outward to open, and then the anti-fall device is integrally sleeved on the upper end of the fan rotor and the damping blocks are made to correspond to the blade tenons one by one, and the fan assembly is placed on the interlocking blade assembly device, which is another technical solution for blade decomposition and will not be described in detail in this embodiment; then, the gland is pressed down, at this time, there is a certain gap between the lower surface of the gland and the upper surface of the annular support block, and then the baffle is rotated inward to be clamped in the gap, and the baffle is fixed by the combination of the card slot and the step screw, and finally the blades are decomposed. When the blades are disassembled, take them off first, then rotate the baffle to open it. Then you can take out the anti-fall device and store it.

[0038] In the above embodiment, preferably, in order to prevent the annular support block from affecting the robot gripper's recognition of the blade tenon and the robot gripper's axial movement stroke, the circumferential surface of the annular support block is gradually reduced from bottom to top above the positioning groove to form an inclined surface B.

[0039] Similarly, in order not to affect the decomposition process of the blades, a hand-carrying hole is provided on the inclined surface B to increase the portability of the entire anti-fall device, rather than directly installing a handle.

[0040] The present invention utilizes the damping property of the rubber block to prevent the blades from falling during the lifting process, and at the same time provides an outward support to the blades to prevent the blades from falling and getting stuck during the lifting process, so that the interlocking blade automatic packaging device can effectively complete the decomposition action, and has a simple structure, easy installation, and high stability and reliability.

[0041] 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.

[0042] 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 anti-falling device for interlocking blade disassembly, characterized in that: The invention comprises an annular support block (1), the annular support block (1) is provided with a mounting slot (5), the mounting slot (5) is coaxially arranged with a fan rotor, a plurality of positioning slots (6) are arranged at equal intervals in the circumferential direction of the annular support block (1), the positioning slots (6) are arranged above the tenon slots and correspond to the number of blades, a damping block (2) is fixed in the positioning slot (6), an end face A of the damping block (2) extends outside the positioning slot (6) and is arranged obliquely for laterally supporting the tenon of the blade.

2. The interlocking blade disassembly blade anti-falling device according to claim 1, characterized in that: The upper surface of the annular support block (1) is provided with a clamping member for preventing the annular support block (1) from axial movement, the clamping member comprising four step screws (4) arranged on the surface of the annular support block (1) and a baffle (3) symmetrically arranged on the upper edge of the mounting slot hole (5) through the step screws (4), one end of the baffle (3) being rotatably connected to a step screw (4) through an axial hole, and the other end of the baffle (3) being provided with a clamping groove (7) and being clamped on the step screw (4) through the clamping groove (7).

3. The interlocking blade disassembly blade anti-falling device according to claim 2, characterized in that: The baffle (3) is an arc-shaped structure, and the inner diameter formed between the two baffles (3) is smaller than the diameter of the gland at the top end of the fan rotor. The baffle (3) is clamped between the gland and the annular support block (1).

4. The interlocking blade disassembly blade anti-falling device according to claim 1, characterized in that: The included angle θ between the end surface A of the damping block (2) and the vertical surface is 5° to 10°.

5. The interlocking blade disassembly blade anti-falling device according to claim 4, characterized in that: The upper base area of ​​the damping block (2) is larger than the lower base area.

6. The interlocking blade disassembly blade anti-falling device according to claim 4, characterized in that: The damping block (2) is made of rubber and has a Shore A hardness of HA35-45.

7. The interlocking blade disassembly blade anti-falling device according to claim 4, characterized in that: The thickness of the damping block (2) is 5 mm to 6 mm.

8. The interlocking blade disassembly blade anti-falling device according to claim 1, characterized in that: The circumferential surface of the annular support block (1) gradually decreases in diameter from bottom to top above the positioning groove (6) to form an inclined surface B.

9. The interlocking blade disassembly blade anti-falling device according to claim 8, characterized in that: The inclined surface B is provided with a hand-carrying hole (8).

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