Aero-engine blade sand blasting protection equipment

Abstract

The utility model discloses aero-engine blade sand blasting protection equipment, which comprises a sand blasting box, a thread stretcher, a limiting and fixing convex groove block and a clamping and limiting structure, the thread stretcher is arranged on the sand blasting box, the limiting and fixing convex groove block is arranged on the thread stretcher, and the clamping and limiting structure is arranged on the limiting and fixing convex groove block. The utility model relates to the technical field of engine blade production, a thread stretcher is arranged on a sand blasting box, a limiting and fixing convex groove block is arranged on the thread stretcher, and the clamping and limiting structure is arranged on the limiting and fixing convex groove block. The utility model relates to the technical field of engine blade production, the thread stretcher is arranged on the sand blasting box, the limiting and fixing convex groove block is arranged on the thread stretcher, and the clamping and limiting structure is arranged on the limiting and fixing convex groove block. The clamping and limiting structure is exquisite in design and comprises a pair of convex extrusion blocks, a plurality of horizontal bidirectional threaded rods and threaded pipes, a horizontal gear set, a horizontal driving machine and other components, and a pair of expansion liquid bags, an electrorheological fluid box, an infusion pump and other auxiliary elements. And the limiting and fixing convex groove block can stably and horizontally stretch out and draw back along the inner side of the sand blasting box under the driving of the thread stretcher.

Description

Technical Field

[0001] The utility model relates to the technical field of engine blade production, in particular to sandblasting protection equipment for aviation engine blades. Background Art

[0002] Turbofan engines, a common type of modern jet engine, generate powerful propulsion by utilizing one or more turbine stages to drive a compressor. Within the internal structure of a turbofan engine, turbofan blades are subdivided into two categories: compressor blades and turbine blades. Compressor blades are located in the compressor section of the engine, and their primary function is to compress the inhaled air and then deliver it to the combustion chamber for combustion. Turbine blades, on the other hand, are located in the turbine section of the engine, cleverly utilizing the energy of high-temperature, high-pressure gas to provide driving force for the compressor and other systems.

[0003] In aircraft engine blade design, turbine blades (both high-pressure and low-pressure) are typically designed with a tenon at their root. The tenon, serving as the connecting bridge between the blade and the turbine disk, is specifically shaped to ensure a tight and secure fit. This design not only withstands the intense impact and rotational forces of high-temperature and high-pressure environments, but also effectively transfers power and heat, ensuring stable engine operation.

[0004] In the prior art, in order to improve the fatigue resistance of the worm turbine blades, the blades are usually sandblasted. This treatment process can effectively eliminate the residual stress on the blade surface, thereby reducing the risk of cracking on the blade surface. However, it is worth noting that the tenon at the root of the worm turbine blade does not need to be sandblasted. Therefore, when sandblasting, the tenon is usually wrapped with tape to protect it from damage. Unfortunately, the tape is easily loosened or damaged during the sandblasting process, and thus cannot provide effective protection for the tenon. In response to the above problems, there may already be technical means to solve them in the prior art, but this case intends to provide an alternative or replacement technical solution. Utility Model Content

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an aircraft engine blade sandblasting protection device, comprising: a sandblasting box, a threaded stretcher, a limit fixing convex groove block, and a clamping limit structure, wherein the threaded stretcher is mounted on the sandblasting box, the limit fixing convex groove block is mounted on the threaded stretcher, and the clamping limit structure is mounted on the limit fixing convex groove block, wherein the clamping limit structure comprises: a pair of convex extrusion blocks, a plurality of horizontal bidirectional threaded rods, a plurality of horizontal bidirectional threaded tubes, a horizontal gear set, a horizontal drive motor, a pair of expansion bladders, an electrorheological fluid tank, a liquid pump, a shunt pipe, a pair of shunt valves, and a pair of current transmitters;

[0006] A plurality of horizontal bidirectional threaded rods are evenly inserted into the inner side of the limiting fixed convex groove block, a plurality of horizontal bidirectional threaded tubes are respectively inserted into a pair of convex extrusion blocks, and a plurality of horizontal bidirectional threaded tubes are respectively sleeved on a plurality of horizontal bidirectional threaded rods, a pair of expansion liquid capsules are respectively installed on a pair of convex extrusion blocks, the horizontal gear set is sleeved on a plurality of horizontal bidirectional threaded rods, the driving end of the horizontal driving machine is connected to the horizontal gear set, the electrorheological fluid tank is installed on the inner side of the limiting fixed convex groove block, the liquid pump is installed on the electrorheological fluid tank, the shunt pipe is installed on the liquid pump, a pair of shunt valves are respectively installed on a pair of expansion liquid capsules, and a pair of shunt valves are connected to the shunt pipe, and a pair of current transmitters are respectively installed on a pair of expansion liquid capsules;

[0007] It should be noted that, in the above, the threaded stretcher drives the limit fixed convex groove block thereon, so that the limit fixed convex groove block can be stably extended and retracted horizontally along the inner side of the sandblasting box, and the horizontal driving machine inside the limit fixed convex groove block is operated to drive the horizontal gear set on the driving end of the horizontal driving machine respectively, and the horizontal gear set drives the plurality of horizontal bidirectional threaded rods thereon to rotate stably, and the plurality of horizontal bidirectional threaded rods drive the paired horizontal bidirectional threaded tubes thereon to stably extend and retract relatively, and the plurality of horizontal bidirectional threaded tubes are used to drive the pair of convex extrusion blocks thereon to extend and retract relatively in pairs, and the horizontal bidirectional threaded tubes are used to extend and retract in pairs to drive the pair of convex extrusion blocks thereon, and the horizontal gear set drives the horizontal driving machine to rotate stably, and the horizontal gear set drives the horizontal bidirectional threaded rods to rotate stably, and the horizontal bidirectional threaded tubes are used to extend and retract relatively ... gear set drives the horizontal bidirectional threaded rods to rotate stably, and the horizontal gear set drives the horizontal bidirectional threaded tubes to extend and retract relatively in pairs, and the horizontal gear set drives the horizontal driving machine to rotate stably, and the horizontal gear set drives the horizontal driving machine to rotate stably, and the horizontal gear set drives the horizontal driving machine to rotate stably, and the horizontal gear set drives the horizontal driving machine to rotate stably, and the horizontal gear set drives the horizontal driving machine to rotate stably, and the horizontal gear set drives the horizontal A pair of convex extrusion blocks respectively drive the expansion liquid capsules thereon, and the pair of expansion liquid capsules are relatively stretched and squeezed respectively, so that a number of blades are tightly squeezed inside the pair of expansion liquid capsules, and the electrorheological fluid inside the electrorheological fluid tank is drained by a liquid pump, and the pair of current emitters inside the electrorheological fluid are energized to make the electrorheological fluid energized and hardened, thereby achieving the goal of energizing and hardening the pair of expansion liquid capsules, and then the hardened pair of expansion liquid capsules are used to expand and flexibly squeeze a number of blades, and then solidified, squeezed and fixed, so as to achieve the goal of squeezing and fixing the tenons inside the blades, and at the same time shielding them.

[0008] Preferably, an extrusion rubber strip is provided on each of the pair of expansion bladders.

[0009] Preferably, a pressure sensor is provided on each of the pair of extruded rubber strips.

[0010] Preferably, the position-limiting and fixing convex groove block is provided with a circular sealing airbag and a sealing air pump.

[0011] Preferably, the circular seal airbag has an upper protective layer.

[0012] Preferably, a telescopic slide group is provided on the sandblasting box and the limiting fixed groove block. Beneficial effects

[0013] The utility model provides a sandblasting protection device for aircraft engine blades. It has the following beneficial effects. Compared with the prior art, the sandblasting protection device for aircraft engine blades has the following advantages: a thread stretcher is installed on the sandblasting box, a limiting fixed convex groove block is installed on the thread stretcher, and a clamping limiting structure is installed on the limiting fixed convex groove block; the clamping limiting structure is exquisitely designed, and includes a pair of convex extrusion blocks, multiple horizontal bidirectional threaded rods and threaded tubes, a horizontal gear set, a horizontal drive motor and other components, as well as a pair of expansion liquid bags, an electrorheological liquid tank, a liquid pump and other auxiliary components; driven by the thread stretcher, the limiting fixed convex groove block can stably extend and retract horizontally along the inner side of the sandblasting box; after the horizontal drive motor is running, it drives the horizontal gear set to rotate, thereby driving multiple horizontal bidirectional threaded rods and threaded tubes, a horizontal gear set, a horizontal drive motor and other auxiliary components; The rods rotate stably; the rotation of these threaded rods drives the pairs of horizontal bidirectional threaded tubes to expand and contract relative to each other, thereby pushing a pair of convex extrusion blocks to move; the expansion liquid capsules on the convex extrusion blocks expand and contract relatively and squeeze, squeezing the blades tightly against the inside of the liquid capsules; the liquid pump draws the electrorheological fluid out of the box and energizes the current transmitter to harden the electrorheological fluid; in this way, the hardened expansion liquid capsule can expand and flexibly squeeze the blades and then solidify, so as to achieve the extrusion and fixing of the tenon on the inside of the blade; at the same time, the expansion liquid capsule also plays a shielding role, protecting the tenon from damage by sandblasting; this design not only improves the clamping stability, but also ensures the safety of the tenon during sandblasting, and has significant technical advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic front and sectional view of an aircraft engine blade sandblasting protection device according to the present invention.

[0015] Figure 2 The utility model is a side sectional schematic diagram of an aircraft engine blade sandblasting protection device.

[0016] Figure 3 for Figure 1 A partial enlarged view of "A".

[0017] In the figure: 1. Sandblasting box; 2. Thread stretcher; 3. Limiting and fixing convex groove block; 4. Convex extrusion block; 5. Horizontal bidirectional threaded rod; 6. Horizontal bidirectional threaded pipe; 7. Horizontal gear set; 8. Horizontal drive motor; 9. Expansion sac; 10. Electrorheological fluid tank; 11. Liquid pump; 12. Diverter pipe; 13. Diverter valve; 14. Current transmitter. DETAILED DESCRIPTION

[0018] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0019] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control. Example

[0020] The present invention will be described in detail below with reference to the accompanying drawings. Figure 1-3 As shown, the thread stretcher 2 is installed on the sandblasting box 1, the limiting fixed convex groove block 3 is installed on the thread stretcher 2, the clamping limiting structure is installed on the limiting fixed convex groove block 3, and the clamping limiting structure includes: a pair of convex extrusion blocks 4, a plurality of horizontal bidirectional threaded rods 5, a plurality of horizontal bidirectional threaded tubes 6, a horizontal gear set 7, a horizontal drive motor 8, a pair of expansion liquid capsules 9, an electrorheological fluid tank 10, a liquid pump 11, a shunt tube 12, a pair of shunt valves 13 and a pair of current transmitters 14; a plurality of the horizontal bidirectional threaded rods 5 are evenly inserted into the inner side of the limiting fixed convex groove block 3, a plurality of the horizontal bidirectional threaded tubes 6 are respectively inserted into a pair of the convex extrusion blocks 4, and a plurality of the horizontal bidirectional threaded tubes 6 are respectively sleeved on a plurality of the horizontal bidirectional threaded rods 5, a pair of the expansion liquid capsules 9 are respectively installed on a pair of the convex extrusion blocks 4, The horizontal gear set 7 is mounted on several horizontal bidirectional threaded rods 5, the driving end of the horizontal driving machine 8 is connected to the horizontal gear set 7, the electrorheological fluid tank 10 is installed on the inner side of the limiting fixed convex groove block 3, the liquid pump 11 is installed on the electrorheological fluid tank 10, the shunt pipe 12 is installed on the liquid pump 11, a pair of the shunt valves 13 are respectively installed on a pair of the expansion liquid bags 9, and a pair of the shunt valves 13 are connected to the shunt pipe 12, a pair of the current transmitters 14 are respectively installed on a pair of the expansion liquid bags 9; a pair of the expansion liquid bags 9 are respectively provided with extruded rubber strips; a pair of the extruded rubber strips are respectively provided with pressure sensors; a circular sealing airbag and a sealing air pump are provided on the limiting fixed convex groove block 3; a protective layer on the circular sealing airbag; a telescopic slide group is provided on the sandblasting box 1 and the limiting fixed convex groove block 3.

[0021] According to the attached Figure 1-3It is concluded that the threaded stretcher 2 drives the limit fixing convex groove block 3 thereon, so that the limit fixing convex groove block 3 is stably extended and retracted horizontally along the inner side of the sandblasting box 1, and the horizontal driving machine 8 inside the limit fixing convex groove block 3 is operated, respectively driving the horizontal gear set 7 on the driving end of the horizontal driving machine 8, and the horizontal gear set 7 drives the plurality of horizontal bidirectional threaded rods 5 thereon to rotate stably, and the plurality of horizontal bidirectional threaded rods 5 drive the paired horizontal bidirectional threaded tubes 6 thereon to stably extend and retract relatively, and the plurality of horizontal bidirectional threaded tubes 6 are driven to extend and retract in pairs to drive a pair of convex extrusion blocks 4 thereon, and a pair of The convex extrusion blocks 4 respectively drive the expansion capsules 9 thereon, and the pair of expansion capsules 9 are respectively stretched and contracted relative to each other to squeeze the plurality of blades, thereby squeezing the plurality of blades tightly against the inner side of the pair of expansion capsules 9. The electrorheological fluid inside the electrorheological fluid tank 10 is drained by the liquid pump 11, and the pair of current transmitters 14 inside the electrorheological fluid are energized to make the electrorheological fluid energized and hardened, thereby achieving the goal of energizing and hardening the pair of expansion capsules 9. After the plurality of blades are expanded and flexibly squeezed by the hardened pair of expansion capsules 9, they are solidified, squeezed and fixed, thereby achieving the goal of squeezing and fixing the tenons inside the blades, while also providing shielding.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An aircraft engine blade sandblasting protection device, comprising: a sandblasting box, a threaded tensioner, a position-limiting fixed convex groove block, and a clamping and limiting structure, wherein the threaded tensioner is mounted on the sandblasting box, the position-limiting fixed convex groove block is mounted on the threaded tensioner, and the clamping and limiting structure is mounted on the position-limiting fixed convex groove block, characterized in that: The clamping and limiting structure includes: a pair of convex extrusion blocks, a plurality of horizontal bidirectional threaded rods, a plurality of horizontal bidirectional threaded tubes, a horizontal gear set, a horizontal driving machine, a pair of expansion liquid bags, an electrorheological liquid tank, a liquid pump, a shunt pipe, a pair of shunt valves and a pair of current transmitters; Several horizontal bidirectional threaded rods are evenly inserted into the inner side of the limiting fixed convex groove block, several horizontal bidirectional threaded tubes are respectively inserted into a pair of convex extrusion blocks, and several horizontal bidirectional threaded tubes are respectively sleeved on several horizontal bidirectional threaded rods, a pair of expansion liquid bags are respectively installed on a pair of convex extrusion blocks, the horizontal gear set is sleeved on several horizontal bidirectional threaded rods, the driving end of the horizontal drive motor is connected to the horizontal gear set, the electrorheological fluid tank is installed on the inner side of the limiting fixed convex groove block, the liquid pump is installed on the electrorheological fluid tank, the shunt pipe is installed on the liquid pump, a pair of shunt valves are respectively installed on a pair of expansion liquid bags, and a pair of shunt valves are connected to the shunt pipe, and a pair of current transmitters are respectively installed on a pair of expansion liquid bags.

2. The aerospace engine blade sandblasting protection device according to claim 1, characterized in that: A pair of expansion bladders are respectively provided with extrusion strips.

3. The aerospace engine blade sandblasting protection device according to claim 2, characterized in that: A pressure sensor is respectively provided on a pair of the extruded rubber strips.

4. The aerospace engine blade sandblasting protection device according to claim 3, characterized in that: The position-limiting and fixing convex groove block is provided with a circular sealing air bag and a sealing air pump.

5. The aerospace engine blade sandblasting protection device according to claim 4, characterized in that: The circular seal airbag upper protective layer.

6. The aero-engine blade sandblasting protection device according to claim 5, characterized in that: The sandblasting box and the position-limiting fixed convex groove block are provided with a telescopic slideway group.

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