A sandblasting protection device for an aeroengine blade

Abstract

The utility model relates to blade sand blasting technical field discloses an aero-engine blade sand blasting protection device, including an aero-engine blade sand blasting protection device, including sand blasting box, the sand blasting box inside is provided with scrape wall subassembly, the sand blasting box front end both sides are provided with the buckle assembly, the sand blasting box front end is provided with the box cover, the box cover inside is provided with the protective glass, scrape wall subassembly includes two pull rod, the pull rod is evenly set in sand blasting box inside both sides, the pull rod top fixedly connected with the plug -in block, the pull rod outside is provided with extrusion spring, the pull rod inside is provided with sliding slot. In the utility model, through the setting of scrape wall subassembly, the cooperation of extrusion spring and compression spring makes scrape wall board always close to the inner wall of protective glass, ensures completely scraping off residual sand particle, effectively solves the problem that protective glass is easy to accumulate waste sand.

Description

Technical Field

[0001] This utility model relates to the field of blade sandblasting technology, and in particular to a sandblasting protection device for aero-engine blades. Background Technology

[0002] In the field of aero-engine blade sandblasting, sandblasting protection devices are key equipment for ensuring operational safety, controlling processing accuracy, and maintaining a clean working environment. However, existing sandblasting protection devices still have significant defects in practical applications, which restrict their performance and reliability.

[0003] Traditional sandblasting protective devices often employ a fixed scraping structure, which prevents the scraper from fitting snugly against the inner wall of the protective glass. During sandblasting, the high-speed sprayed sand particles bounce off the blades, and some particles adhere to the inner wall of the protective glass, forming an accumulation. Fixed scrapers lack elasticity and adjustment capabilities, resulting in incomplete cleaning. This not only reduces the operator's processing efficiency but also obstructs their view, making it impossible for them to judge the processing accuracy.

[0004] While existing technologies attempt to use movable scrapers, they are achieved only through simple mechanical connections, making operation complex. In addition, such designs lack adaptive elastic components, resulting in unstable adhesion between the scraper and the inner wall of the glass, which can easily lead to cleaning dead corners. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a sandblasting protection device for aero-engine blades, which aims to improve the problems of easy accumulation of waste sand in protective glass and unstable closure of the cover in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sandblasting protection device for aero-engine blades includes a sandblasting box, a wall scraping assembly inside the sandblasting box, and snap-fit ​​assemblies on both the left and right sides of the front end of the sandblasting box. A box cover is located at the front end of the sandblasting box, and a protective glass is installed inside the box cover. The wall scraping assembly includes two pull rods evenly distributed on the left and right sides inside the sandblasting box. A plug-in block is fixedly connected to the top of each pull rod. A compression spring is installed on the outside of each pull rod. A sliding groove is formed on the inside of each pull rod, and a limit groove is formed on the inside of each compression spring. The plug-in block is connected to a first wall scraper plate via connecting grooves, all located on the left and right sides of the first wall scraper plate. An installation groove is formed inside the first wall scraper plate, and a compression spring is installed inside the first wall scraper plate. A second wall scraper plate is fixedly connected to the end of the compression spring furthest from the first wall scraper plate.

[0008] As a further description of the above technical solution:

[0009] The buckle assembly includes two rotating rings, both of which are located inside the sandblasting box. A first inner groove is formed on the outside of the rotating ring, and a second inner groove is formed on the outside of the rotating ring. A rotating rod is fixedly connected to the end of the rotating ring away from the first inner groove. A toggle plate is fixedly connected to the outside of the rotating rod. A sliding groove is formed inside the toggle plate, and a tension spring is provided inside the toggle plate. A limit block is fixedly connected to one end of the tension spring.

[0010] As a further description of the above technical solution:

[0011] Both the sliding groove and the limiting groove are opened on the inside of the sandblasting box, and the end of the compression spring away from the second scraper is fixedly connected to the inside of the mounting groove.

[0012] As a further description of the above technical solution:

[0013] The pull rod is slidably connected inside the sliding groove, the compression spring is slidably connected inside the limiting groove, and the plug block is fixedly connected to the inner side of the sliding groove;

[0014] As a further description of the above technical solution:

[0015] The second scraper is slidably connected inside the mounting groove, and the second scraper abuts against the protective glass;

[0016] As a further description of the above technical solution:

[0017] The plug block is fixedly connected inside the connection slot;

[0018] As a further description of the above technical solution:

[0019] The first inner groove is formed inside the sandblasting box, and the rotating ring is rotatably connected inside the first inner groove;

[0020] As a further description of the above technical solution:

[0021] The second inner groove is formed on the outside of the sandblasting box, and the rotating rod is rotatably connected to the outside of the second inner groove.

[0022] As a further description of the above technical solution:

[0023] The end of the tension spring away from the limiting block is fixedly connected to the inner side of the movable slide groove, and the limiting block is slidably connected inside the movable slide groove.

[0024] This utility model has the following beneficial effects:

[0025] 1. In this utility model, by setting up the wall scraping assembly, the wall scraping assembly achieves dynamic contact of the wall scraping plate through the synergistic action of the compression spring and the squeezing spring. When the pulling rod drives the plug-in block to move, the compression spring provides a continuous outward thrust, allowing the first wall scraping plate to slide inside the body of the sandblasting protective device. The compression spring in the mounting groove can drive the second wall scraping plate to extend and retract, so that the second wall scraping plate is always in close contact with the inner wall of the protective glass, ensuring that residual sand particles are thoroughly scraped off, effectively solving the problem of waste sand easily accumulating on the protective glass.

[0026] 2. In this utility model, the buckle assembly is designed to achieve closure through an elastic limiting structure. The rotation of the rotating ring and the rotating rod allows the actuating plate to be flexibly adjusted in angle. The tension spring drives the limiting block to slide in the moving groove. The spring tension causes the limiting block to lock the edge of the box cover, forming a self-locking fixation. This prevents the box cover from loosening due to vibration or pressure during the sandblasting process, significantly enhancing the closure stability. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of a sandblasting protection device for aero-engine blades proposed in this utility model.

[0028] Figure 2 This is a schematic diagram of the wall scraping assembly of a sandblasting protection device for aero-engine blades proposed in this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the pull rod of the sandblasting protection device for aero-engine blades proposed in this utility model;

[0030] Figure 4 This utility model proposes a structural schematic diagram of the scraper plate of an aero-engine blade sandblasting protection device.

[0031] Figure 5 This is a schematic diagram of the snap-fit ​​assembly of a sandblasting protection device for aero-engine blades proposed in this utility model;

[0032] Figure 6 Figure 4 Enlarged view of point A in the middle;

[0033] Figure 7 Figure 4 Enlarged view at point B

[0034] Legend:

[0035] 1. Sandblasting box; 2. Scraping assembly; 3. Buckle assembly; 4. Protective glass; 5. Box cover; 21. Sliding groove; 22. Limiting groove; 23. Pull rod; 24. Compression spring; 25. Insertion block; 26. Second scraping plate; 27. Mounting groove; 28. First scraping plate; 29. ​​Compression spring; 20. Connecting groove; 31. First inner groove; 32. Second inner groove; 33. Rotating ring; 34. Rotating rod; 35. Actuating plate; 36. Moving slide; 37. Tension spring; 38. Limiting block. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Reference Figures 1-7 This utility model provides an embodiment of a sandblasting protection device for aero-engine blades, including a sandblasting box 1. A wall-scraping assembly 2 is installed inside the sandblasting box 1. This assembly achieves sand particle cleaning through a double-guided structure. Buckling assemblies 3 are provided on both the left and right sides of the front end of the sandblasting box 1. A box cover 5 is provided at the front end of the sandblasting box 1, and a protective glass 4 is installed inside the box cover 5. The wall-scraping assembly 2 includes two pulling rods 23, which are evenly arranged on the left and right sides inside the sandblasting box 1. A plug-in block 25 is fixedly connected to the top of the pulling rod 23. A compression spring 24 is provided outside the pulling rod 23, providing continuous lateral thrust to keep the wall-scraping plate always in contact with the box wall. A sliding groove 21 is provided on the inner side of the pulling rod 23, controlling the vertical movement trajectory of the pulling rod 23 and preventing horizontal deviation of the wall-scraping plate. A limit groove 22 is provided on the inner side of the compression spring 24. The plug-in block 25 and the first wall-scraping plate 28... The first scraper plate 28 is connected via connecting grooves 20, which are located on the left and right sides of the first scraper plate 28. The first scraper plate 28 has an installation groove 27 inside and a compression spring 29 inside. A second scraper plate 26 is fixedly connected to the end of the compression spring 29 away from the first scraper plate 28. The second scraper plate 26 contacts the protective glass 4 via the compression spring 29. A sliding groove 21 and a limiting groove 22 are both located inside the sandblasting box 1. The end of the compression spring 29 away from the second scraper plate 26 is fixedly connected inside the installation groove 27. A pull rod 23 is slidably connected inside the sliding groove 21. A compression spring 24 is slidably connected inside the limiting groove 22. A plug-in block 25 is fixedly connected inside the sliding groove 21. The second scraper plate 26 is slidably connected inside the installation groove 27 and abuts against the protective glass 4. The plug-in block 25 is fixedly connected inside the connecting groove 20.

[0038] Reference Figures 1-7 The latching assembly 3 includes two rotating rings 33, both of which are located inside the sandblasting box 1. A first inner groove 31 is formed on the outer side of each rotating ring 33, and a second inner groove 32 is formed on the outer side of each rotating ring 33. The first inner groove 31 provides a rotation path for the rotating ring 33, ensuring the movement accuracy of the latching assembly 3. A rotating rod 34 is fixedly connected to the end of the rotating ring 33 away from the first inner groove 31. A lever plate 35 is fixedly connected to the outer side of the rotating rod 34. The lever plate 35 is a component for manually controlling the opening and closing of the latch by the operator. The rotating rod 34 connects the rotating ring 33 and the lever plate 35, transmitting rotational torque. A displacement mechanism is formed inside the lever plate 35. The movable slide 36 and the actuating plate 35 are equipped with a tension spring 37. One end of the tension spring 37 is fixedly connected to a limit block 38. The movable slide 36 provides sliding space for the tension spring 37 and the limit block 38 to ensure smooth locking of the buckle. The first inner groove 31 is opened inside the sandblasting box 1. The rotating ring 33 is rotatably connected inside the first inner groove 31. The second inner groove 32 is opened outside the sandblasting box 1. The rotating rod 34 is rotatably connected to the outside of the second inner groove 32. The end of the tension spring 37 away from the limit block 38 is fixedly connected to the inner side of the movable slide 36. The limit block 38 is slidably connected inside the movable slide 36.

[0039] Working principle: The pull rod 23 is pre-tensioned in the sliding groove 21 by the compression spring 24. At this time, the compression spring 29 in the first scraper 28 is in a contracted state, and the second scraper 26 is fully retracted in the mounting groove 27. When the sandblasting operation begins, waste sand accumulates on the inner wall of the protective glass 4. The operator manually or through the drive device pulls the pull rod 23 to make it slide along the sliding groove 21. The compression spring 24 is further compressed, providing a continuous outward thrust. The pull rod 23 drives the first scraper 28 to move synchronously through the plug block 25. When the first scraper 28 moves downward, under the action of the compression spring 29 in the first scraper 28, the second scraper 26 extends outward, automatically adjusting the length of the scraper to ensure that the second scraper 26 is always in close contact with the inner wall of the glass, thoroughly scraping away the accumulated waste sand. After cleaning, the pull rod 23 is released, the compression spring 24 rebounds, and the first scraper 28 and the second scraper 26 are driven to move outward. When the wall panel 26 returns to its initial position, the compression spring 29 contracts synchronously, and the second scraper wall panel 26 retracts into the mounting groove 27, awaiting the next cleaning. When the sandblasting protective device is closed, the operator moves the actuating plate 35, causing it to rotate via the rotating rod 34 and the rotating ring 33. At this time, the tension spring 37 inside the actuating plate 35 pulls the limiting block 38 to slide along the moving slide 36 toward the edge of the cover 5. Under the elastic force of the tension spring 37, the limiting block 38 is tightly attached to the edge of the cover 5. Due to the continuous tension of the tension spring 37, the limiting block 38 always maintains a pressed state against the edge of the cover 5. Even if vibration or pressure changes occur during sandblasting, the limiting block 38 will not loosen on its own, achieving self-locking fixation. When it is necessary to open the cover 5, the actuating plate 35 is manually moved outward to overcome the tension of the tension spring 37, causing the limiting block 38 to slide inward along the moving slide 36 and disengage from the edge of the cover 5. At this time, the cover 5 can be easily opened.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sandblasting protection device for aircraft engine blades, comprising a sandblasting box (1), characterized in that: The sandblasting box (1) is equipped with a wall scraping component (2) inside. The front left and right sides of the sandblasting box (1) are equipped with buckle components (3). The front of the sandblasting box (1) is equipped with a box cover (5). The box cover (5) is equipped with a protective glass (4) inside. The wall scraping assembly (2) includes two pull rods (23), which are evenly arranged on the left and right sides inside the sandblasting box (1). A plug-in block (25) is fixedly connected to the top of the pull rod (23). A compression spring (24) is provided on the outside of the pull rod (23). A sliding groove (21) is opened on the inside of the pull rod (23). A limit groove (22) is opened on the inside of the compression spring (24). The plug-in block (25) is connected to the first wall scraping plate (28) through a connecting groove (20). The connecting groove (20) is opened on the left and right sides of the first wall scraping plate (28). An installation groove (27) is opened inside the first wall scraping plate (28). A compression spring (29) is provided inside the first wall scraping plate (28). A second wall scraping plate (26) is fixedly connected to the end of the compression spring (29) away from the first wall scraping plate (28).

2. The aero-engine blade sandblasting protection device according to claim 1, characterized in that: The buckle assembly (3) includes two rotating rings (33), both of which are located inside the sandblasting box (1). The rotating rings (33) have a first inner groove (31) on their outer side and a second inner groove (32) on their outer side. A rotating rod (34) is fixedly connected to one end of the rotating ring (33) away from the first inner groove (31). A toggle plate (35) is fixedly connected to the outer side of the rotating rod (34). A sliding groove (36) is provided inside the toggle plate (35). A tension spring (37) is provided inside the toggle plate (35). A limit block (38) is fixedly connected to one end of the tension spring (37).

3. The aero-engine blade sandblasting protection device according to claim 1, characterized in that: The sliding groove (21) and the limiting groove (22) are both opened on the inner side of the sandblasting box (1), and the end of the compression spring (29) away from the second scraper plate (26) is fixedly connected to the inside of the mounting groove (27).

4. The aero-engine blade sandblasting protection device according to claim 1, characterized in that: The pull rod (23) is slidably connected inside the sliding groove (21), the compression spring (24) is slidably connected inside the limiting groove (22), and the plug block (25) is fixedly connected to the inside of the sliding groove (21).

5. The aero-engine blade sandblasting protection device according to claim 1, characterized in that: The second scraper (26) is slidably connected inside the mounting groove (27), and the second scraper (26) abuts against the protective glass (4).

6. The aero-engine blade sandblasting protection device according to claim 1, characterized in that: The plug block (25) is fixedly connected inside the connecting groove (20).

7. The aero-engine blade sandblasting protection device according to claim 2, characterized in that: The first inner groove (31) is formed inside the sandblasting box (1), and the rotating ring (33) is rotatably connected inside the first inner groove (31).

8. The aero-engine blade sandblasting protection device according to claim 2, characterized in that: The second inner groove (32) is opened on the outside of the sandblasting box (1), and the rotating rod (34) is rotatably connected to the outside of the second inner groove (32).

9. The sandblasting protection device for aero-engine blades according to claim 2, characterized in that: The end of the tension spring (37) away from the limiting block (38) is fixedly connected to the inner side of the movable slide (36), and the limiting block (38) is slidably connected inside the movable slide (36).

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