Cartridge receiver aligning mechanism capable of accurately measuring coaxiality of fulcrum of engine

Abstract

The utility model discloses a cartridge receiver aligning mechanism capable of accurately measuring the coaxiality of engine fulcrums, which comprises a rotary table bearing, a cartridge receiver supporting plate, a rotary table bearing seat, a supporting cylinder and a gauge stand supporting frame, and a cartridge receiver connecting hole and a first rotary table bearing connecting hole are formed on the cartridge receiver supporting plate; a casing binding face is formed at the position of the casing connecting hole in the casing supporting plate, a disc edge face is formed at the position of the first rotary table bearing connecting hole, an engine stator casing is installed on the casing supporting plate, the rotary table bearing comprises a first connecting portion and a second connecting portion, the first connecting portion and the disc edge face are installed together, and the second connecting portion and the disc edge face are installed together. The rotary table bearing seat comprises a third connecting part, a rotary table bearing attaching part and a supporting cylinder attaching part, the rotary table bearing attaching part and the second connecting part are installed together, the supporting cylinder is located below the rotary table bearing seat, the supporting cylinder and the supporting cylinder attaching part are installed together, and the gauge stand supporting frame is installed on the side surface of the supporting cylinder.

Description

Technical fields:

[0001] This utility model relates to a casing self-aligning mechanism that can accurately measure the coaxiality of the engine pivot points, and belongs to the field of engine assembly technology. Background technology:

[0002] Modern turbojet aircraft engines operate at extremely high speeds, with some small engines reaching 40,000–50,000 rpm. Under these high-speed conditions, the coaxiality between the engine's support points must be maintained at a precise level. Otherwise, during installation, the rotors supported at these points will experience unacceptable bending, leading to excessive vibration during high-speed operation and potentially causing premature rotor failure and engine malfunction. Therefore, during assembly, it is crucial to ensure a sufficiently low coaxiality between the rotor's support points.

[0003] Currently, engine manufacturers mostly use coordinate measuring machines (CMMs) to measure the coaxiality of engine pivot points. The primary drawback of using CMMs is their high cost. CMMs themselves have a complex structure and high manufacturing cost, and require regular maintenance and calibration to ensure measurement accuracy and reliability, further increasing operating costs. Additionally, CMMs have stringent environmental requirements, needing constant temperature, dustproof, vibration-proof, and humidity control, further increasing operating costs in environments such as aero-engine assembly.

[0004] In addition, coordinate measuring systems also have common operational problems such as high requirements for operator proficiency, easy damage to probes, and fluctuations in measurement accuracy, resulting in low detection efficiency.

[0005] Therefore, it is indeed necessary to improve existing technologies to address their shortcomings. Utility Model Content:

[0006] This invention provides a casing self-aligning mechanism that can accurately measure the coaxiality of the engine pivot point in order to solve the problems existing in the prior art.

[0007] The technical solution adopted in this utility model includes: a casing self-aligning mechanism capable of accurately measuring the coaxiality of engine pivot points, comprising a turntable bearing, a casing support plate, a turntable bearing seat, a support cylinder, and a gauge support frame. The casing support plate has casing connection holes and a first turntable bearing connection hole formed sequentially from the center towards the circumference. A casing mating surface is formed on the casing support plate at the location of the casing connection holes, and a flange surface is formed at the location of the first turntable bearing connection hole. An engine stator casing is mounted on the casing support plate, and the lower surface of the engine stator casing is tightly attached to the casing mating surface and then mounted on the casing support plate. The turntable bearing includes a first connecting portion and a second connecting portion extending outward from the outer surface of the first connecting portion. The first connecting portion is mounted together with the disc rim. The turntable bearing housing includes a third connecting portion, a turntable bearing mating portion extending inward from the inner surface of the third connecting portion, and a support cylinder mating portion extending outward from the outer surface of the third connecting portion. The turntable bearing mating portion is mounted together with the second connecting portion. The support cylinder is located below the turntable bearing housing, and the support cylinder is mounted together with the support cylinder mating portion. The table support frame is mounted on the side surface of the support cylinder.

[0008] Furthermore, the casing connection hole includes a first casing connection hole and a second casing connection hole. A first casing mating surface is formed on the casing support plate at the position of the first casing connection hole, and a second casing mating surface is formed at the position of the second casing connection hole.

[0009] Furthermore, a transition plane is formed on the casing support plate at a position between the second casing mating surface and the disk rim surface, and a weight reduction hole is formed on the transition plane.

[0010] Furthermore, a first connecting hole is formed on the first connecting part, and a second connecting hole is formed on the second connecting part. Bolts are screwed into the first turntable bearing connecting hole and the first connecting hole to install the turntable bearing and the casing support plate together.

[0011] Furthermore, a second turntable bearing connecting hole is formed on the turntable bearing mating part, and a first support cylinder connecting hole is formed on the support cylinder mating part. Bolts are screwed into the second turntable bearing connecting hole and the second connecting hole to install the turntable bearing and the turntable bearing housing together.

[0012] Furthermore, a turntable bearing housing mounting hole is formed on the upper surface of the support cylinder, and the support cylinder and the turntable bearing housing are installed together by screwing bolts into the first support cylinder connecting hole and the turntable bearing housing mounting hole.

[0013] Furthermore, a table frame support mounting hole is formed on the side surface of the support cylinder, and a second support cylinder connection hole is formed on the table frame support. Bolts are screwed into the second support cylinder connection hole and the table frame support mounting hole to install the support cylinder and the table frame support together.

[0014] Furthermore, the support cylinder adopts a cylindrical design.

[0015] Furthermore, the support cylinder is provided with windows.

[0016] The present invention has the following advantages: the casing self-aligning mechanism of the present invention can accurately measure the coaxiality of the engine pivot point, and the measurement cost is lower while ensuring the measurement accuracy requirement. Attached image description:

[0017] Figure 1 This is a schematic diagram of the casing self-aligning mechanism of this utility model, which can accurately measure the coaxiality of the engine pivot point.

[0018] Figure 2 for Figure 1 A sectional view.

[0019] Figure 3 This is a schematic diagram of the casing support plate.

[0020] Figure 4 This is a schematic diagram of the turntable bearing.

[0021] Figure 5 This is a schematic diagram showing the installation of the casing support plate and the turntable bearing.

[0022] Figure 6 This is a schematic diagram of the bearing housing for a turntable bearing.

[0023] Figure 7 This is a schematic diagram of the support cylinder. Detailed implementation method:

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] This utility model relates to a casing self-aligning mechanism that can accurately measure the coaxiality of the engine pivot point, comprising a turntable bearing 1, a casing support plate 2, a turntable bearing seat 3, a support cylinder 4, and a gauge support frame 5.

[0026] The casing support plate 2 has a first casing connection hole 20, a second casing connection hole 21, and a first turntable bearing connection hole 22 formed sequentially from the center to the circumference. A first casing mating surface 23 is formed at the position of the first casing connection hole 20, a second casing mating surface 24 is formed at the position of the second casing connection hole 21, and a disc rim surface 25 is formed at the position of the first turntable bearing connection hole 22. A transition plane 26 is formed on the casing support plate (2) between the second casing mating surface 24 and the disc rim surface 25, and a weight reduction hole 260 is formed on the transition plane 26. An engine stator casing 6 is mounted on the casing support plate 2. The lower surface of the engine stator casing 6 is in close contact with the first casing mating surface 23 and the second casing mating surface 24. The engine stator casing 6 and the casing support plate 2 are mounted together by screwing bolts into the first casing connection hole 20 and the second casing connection hole 21.

[0027] The turntable bearing 1 includes a first connecting portion 10 and a second connecting portion 11 extending outward from the outer surface of the first connecting portion 10. A first connecting hole 100 is formed on the first connecting portion 10, and a second connecting hole 110 is formed on the second connecting portion 11. The turntable bearing 1 and the housing support plate 2 are installed together by screwing bolts into the first turntable bearing connecting hole 22 and the first connecting hole 100.

[0028] The turntable bearing housing 3 includes a third connecting portion 30, a turntable bearing mating portion 31 extending inward from the inner surface of the third connecting portion 30, and a support cylinder mating portion 32 extending outward from the outer surface of the third connecting portion 30. A second turntable bearing connecting hole 310 is formed on the turntable bearing mating portion 31, and a first support cylinder connecting hole 320 is formed on the support cylinder mating portion 32. The turntable bearing 1 and the turntable bearing housing 3 are installed together by screwing bolts into the second turntable bearing connecting hole 310 and the second connecting hole 110.

[0029] The support cylinder 4 is located below the turntable bearing housing 3. A turntable bearing housing mounting hole 40 is formed on the upper surface of the support cylinder 4, and a table frame support mounting hole 41 is formed on the side surface of the support cylinder 4. The support cylinder 4 and the turntable bearing housing 3 are installed together by screwing bolts into the first support cylinder connecting hole 320 and the turntable bearing housing mounting hole 40. The table frame support 5 has a second support cylinder connecting hole 50. The support cylinder 4 and the table frame support 5 are installed together by screwing bolts into the second support cylinder connecting hole 50 and the table frame support mounting hole 41.

[0030] In this utility model, the self-aligning mechanism for the engine casing, capable of accurately measuring the coaxiality of the engine pivot points, employs a thrust-radial cylindrical roller bearing 1. This type of bearing exhibits minimal end-face runout, ensuring unacceptable impact on coaxiality measurement while bearing the stator casing load. The casing support plate 2 is equipped with multiple casing connection holes, allowing for the measurement of coaxiality in different engine casings. A transition plane is provided on the casing support plate 2 to maintain the support plate thickness and ensure required support rigidity. Weight-reduction holes are arranged on the transition plane to reduce structural weight while maintaining necessary rigidity. The turntable bearing housing 3 features a turntable bearing mating portion and a second turntable bearing connection hole to ensure normal turntable bearing operation. Additionally, the turntable bearing housing 3 has a first support cylinder connection hole for connection to the support cylinder. The support cylinder 4 adopts a cylindrical design, facilitating direct processing from shaped tubing. The support cylinder 4 has a second support cylinder connection hole 50 for installation with the turntable bearing housing. The support cylinder 4 has a window (not marked) to facilitate workers' operation inside; the side of the support cylinder 4 has a meter holder support mounting hole 41 to facilitate the meter holder support frame 5 to be firmly installed on the support cylinder, ensuring that the meter holder does not vibrate significantly in the coaxiality of the metering engine casing, thus preventing inaccurate measurement.

[0031] This utility model relates to a casing self-aligning mechanism capable of accurately measuring the coaxiality of the engine pivot points. During the self-aligning process, the outer diameter of the turntable bearing (see...) Figure 5 Using the radial reference, rotate the turntable bearing and measure the bearing mounting surface of the bearing housing at the bottom of the engine stator casing (see...). Figure 2 To ensure the coaxiality of the engine stator casing, use tools such as copper rods to adjust its position, controlling its coaxiality within the required range. Then, use the outer diameter of the turntable bearing (see...) Figure 5 Using the radial reference, the coaxiality of other mounting cylindrical surfaces of the engine stator casing is measured. If the requirements are not met, tools such as copper rods are used for adjustment until the coaxiality of all mounting cylindrical surfaces meets the requirements.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of the present utility model, and these improvements should also be considered within the protection scope of the present utility model.

Claims

1. A casing self-aligning mechanism capable of accurately measuring the coaxiality of engine pivot points, characterized in that: The system includes a turntable bearing (1), a casing support plate (2), a turntable bearing housing (3), a support cylinder (4), and a table support frame (5). The casing support plate (2) has a casing connection hole and a first turntable bearing connection hole (22) sequentially formed from the center outwards. A casing mating surface is formed on the casing support plate (2) at the location of the casing connection hole. A disc rim surface (25) is formed at the location of the first turntable bearing connection hole (22). An engine stator casing (6) is mounted on the casing support plate (2). The lower surface of the engine stator casing (6) is tightly attached to the casing mating surface and then installed together with the casing support plate (2). The turntable bearing (1) includes a first connecting part (10) and a... The first connecting part (10) is installed together with the disk rim surface (25). The turntable bearing housing (3) includes a third connecting part (30), a turntable bearing fitting part (31) extending inward from the inner surface of the third connecting part (30), and a support cylinder fitting part (32) extending outward from the outer surface of the third connecting part (30). The turntable bearing fitting part (31) is installed together with the second connecting part (11). The support cylinder (4) is located below the turntable bearing housing (3), and the support cylinder (4) is installed together with the support cylinder fitting part (32). The table frame support bracket (5) is installed on the side surface of the support cylinder (4).

2. The casing self-aligning mechanism as described in claim 1, capable of accurately measuring the coaxiality of the engine pivot points, is characterized in that: The casing connection holes include a first casing connection hole (20) and a second casing connection hole (21). A first casing mating surface (23) is formed on the casing support plate (2) at the position of the first casing connection hole (20), and a second casing mating surface (24) is formed at the position of the second casing connection hole (21).

3. The casing self-aligning mechanism as described in claim 2, capable of accurately measuring the coaxiality of the engine pivot points, is characterized in that: A transition plane (26) is formed on the casing support plate (2) at a position between the second casing mating surface (24) and the disk edge surface (25), and a weight reduction hole (260) is formed on the transition plane (26).

4. The casing self-aligning mechanism as described in claim 3, capable of accurately measuring the coaxiality of the engine pivot points, characterized in that: A first connecting hole (100) is formed on the first connecting part (10), and a second connecting hole (110) is formed on the second connecting part (11). The turntable bearing (1) and the casing support plate (2) are installed together by screwing bolts into the first turntable bearing connecting hole (22) and the first connecting hole (100).

5. The casing self-aligning mechanism as described in claim 4, capable of accurately measuring the coaxiality of the engine pivot points, characterized in that: A second turntable bearing connecting hole (310) is formed on the turntable bearing mating part (31), and a first support cylinder connecting hole (320) is formed on the support cylinder mating part (32). The turntable bearing (1) and the turntable bearing housing (3) are installed together by screwing bolts into the second turntable bearing connecting hole (310) and the second connecting hole (110).

6. The casing self-aligning mechanism as described in claim 5, capable of accurately measuring the coaxiality of the engine pivot points, is characterized in that: The upper surface of the support cylinder (4) has a turntable bearing seat mounting hole (40). The support cylinder (4) and the turntable bearing seat (3) are installed together by screwing bolts into the first support cylinder connecting hole (320) and the turntable bearing seat mounting hole (40).

7. The casing self-aligning mechanism as described in claim 6, capable of accurately measuring the coaxiality of the engine pivot points, characterized in that: The support cylinder (4) has a watch frame support mounting hole (41) formed on its side surface, and the watch frame support frame (5) has a second support cylinder connection hole (50). The support cylinder (4) and the watch frame support frame (5) are installed together by screwing bolts into the second support cylinder connection hole (50) and the watch frame support mounting hole (41).

8. The casing self-aligning mechanism as described in claim 1, capable of accurately measuring the coaxiality of the engine pivot points, characterized in that: The support cylinder (4) adopts a cylindrical design.

9. The casing self-aligning mechanism as described in claim 1, capable of accurately measuring the coaxiality of the engine pivot points, characterized in that: The support cylinder (4) is provided with a window.

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