Inspection and maintenance clamp for inner shell flange of aero-engine combustion chamber

Abstract

The utility model discloses an aero-engine combustion chamber inner shell flange inspection and maintenance clamp which comprises a supporting plate, an expansion moving block, a top plate, a conical block, an inner clamping block, a first fixing piece, a second fixing piece and a positioning fixing piece. The top plate is coaxially and fixedly arranged on the supporting plate, a plurality of extension moving blocks are coaxially arranged between the supporting plate and the top plate at intervals in a surrounding mode, each extension moving block can move in a reciprocating mode in the axis direction of the supporting plate, and a second limiting block is vertically arranged on the side, away from the axis of the supporting plate, of each extension moving block. According to the invention, the problem that in the prior art, the maximum diameters of the manufactured inner shells of the aero-engine combustion chambers are slightly different, so that the inner shells are difficult to fix during size inspection, and the size measurement of the inner shells is affected is solved. The aero-engine combustion chamber inner shell flange inspection and maintenance clamp can be finely adjusted according to the maximum diameter of an inner shell.

Description

Technical Field

[0001] This utility model relates to the field of aero-engine combustion chamber testing technology, specifically, to an inspection and maintenance fixture for the flange of the inner casing of an aero-engine combustion chamber. Background Technology

[0002] The annular combustion chamber of an aero-engine mainly consists of the inner and outer walls of the flame tube and the annular head, surrounded by the inner and outer shells of the combustion chamber. The annular combustion chamber can be viewed as another annular channel within the annular channel formed by the combustion chamber shell and the outer shell. Currently, most methods for inspecting the combustion chamber shell rely on manual inspection. This requires pre-installation fixation before manual inspection, which is inefficient and cannot perform vibration testing on the combustion chamber shell.

[0003] Because the maximum diameter of the combustion chamber shell of each aircraft engine varies slightly after manufacturing, it is difficult to fix during dimensional inspection, which affects the measurement of the inner shell's dimensions.

[0004] Therefore, providing an inspection and maintenance fixture for the flange of the combustion chamber of an aero-engine that can be finely adjusted according to the maximum diameter of the inner shell is a problem that this utility model urgently needs to solve. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this utility model is to overcome the difficulty in fixing the inner shell during dimensional inspection due to the slight difference in the maximum diameter of each aero-engine combustion chamber shell after manufacturing, which affects the measurement of the inner shell's dimensions. Therefore, this invention provides an aero-engine combustion chamber shell flange inspection and maintenance fixture that can be finely adjusted according to the maximum diameter of the inner shell.

[0006] To achieve the above objectives, this utility model provides a fixture for inspecting and repairing the flange of an aero-engine combustion chamber casing. The fixture includes: a support plate, an extension moving block, a top plate, a conical block, an inner clamping block, a first fixing member, a second fixing member, and a positioning fixing member. The top plate is coaxially fixedly mounted on the support plate. Several extension moving blocks are coaxially spaced around the support plate and the top plate. Each extension moving block can reciprocate towards the axis of the support plate, and a second limiting block is vertically mounted on its side away from the axis of the support plate. A first strip-shaped hole and a second strip-shaped hole are coaxially arranged around the upper surface of the top plate. The inner clamping block is movably mounted in the first strip-shaped hole via the second fixing member. A through hole adapted to the conical block is coaxially passed through the support plate and the top plate. The conical block is coaxially and vertically mounted at the through hole via the first fixing member. A positioning screw hole adapted to the positioning fixing member is provided on the surface of the extension moving block. The positioning fixing member is movably mounted at the second strip-shaped hole.

[0007] Preferably, a clamping plate is coaxially arranged on the lower surface of the support plate, the third fixing member can be threaded through the clamping plate, a plurality of third fixing members are coaxially arranged around the clamping plate, and a plurality of pillars are coaxially arranged around the lower surface of the support plate, with a base plate horizontally arranged at the lower end of each pillar.

[0008] Preferably, a plurality of first limiting blocks are provided on the upper surface of the support plate around the periphery of the top plate.

[0009] Preferably, the upper surface of the support plate is provided with an external clamp corresponding to each extended moving block.

[0010] Preferably, the conical block has a plurality of compression elastic elements arranged vertically around it, with their lower ends abutting against the support plate.

[0011] Preferably, the upper end of the positioning and fixing member is provided with a handle.

[0012] According to the above technical solution, the beneficial effects of this utility model compared with the prior art are as follows: This application secures the inner shell to the inner clamping block, and then moves the conical block downwards or upwards by twisting the first fixing member, thereby causing the expansion moving block to move back and forth. Then, the positioning fixing member is threaded into the positioning screw hole, and the second limiting block abuts against the inner and outer walls to adapt to the outer wall of the inner shell. Then, the position of the inner clamping block is adjusted to abut against the inner wall of the inner shell, and the inner bottom side of the inner shell is pressed by the second fixing member, thereby fixing the inner shell. Then, the user can measure various dimensions of the inner shell as needed. This fixing method can be finely adjusted according to the actual size of the inner shell to fully open the inner shell, thereby obtaining accurate dimensional data.

[0013] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0015] Figure 1 This is a planar sectional view of an inspection and maintenance fixture for the combustion chamber flange of an aircraft engine, provided in a preferred embodiment of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 3-Support plate; 4-Extension moving block; 11-Second limiting block; 18-Positioning screw hole; 6-Top plate; 19-Second strip hole; 7-Conical block; 9-Inner clamping block; 13-First fixing component; 14-Second fixing component; 21-Positioning fixing component; 8-Clamping plate; 1-Base plate; 15-Third fixing component; 2-Support column; 16-Fourth fixing component; 17-Fifth fixing component; 5-First limiting block; 22-Sixth fixing component; 10-External clamp; 20-Flat-head fixing component; 12-Compression elastic component. Detailed Implementation

[0017] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0018] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the utility model product is in use. These are merely for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," and "third," etc., are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance. Additionally, the terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0019] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0021] A jig for inspecting and repairing the flange of the combustion chamber of an aero-engine, comprising: a support plate 3, an extension moving block 4, a top plate 6, a conical block 7, an inner clamping block 9, a first fixing member 13, a second fixing member 14, and a positioning fixing member 21. The top plate 6 is coaxially fixedly mounted on the support plate 3. A plurality of extension moving blocks 4 are coaxially spaced around the support plate 3 and the top plate 6. Each extension moving block 4 can reciprocate toward the axis of the support plate 3, and its side away from the axis of the support plate 3 is vertically... A second limiting block 11 is provided. The top plate 6 has a first strip hole and a second strip hole 19 coaxially arranged around its upper surface. The inner clamping block 9 is movably arranged in the first strip hole through a second fixing member 14. The support plate 3 and the top plate 6 are coaxially provided with a through hole adapted to the conical block 7. The conical block 7 is coaxially and vertically arranged at the through hole through a first fixing member 13. The surface of the extension moving block 4 is provided with a positioning screw hole 18 adapted to the positioning fixing member 21. The positioning fixing member 21 is movably arranged at the second strip hole 19.

[0022] This application achieves fixation of the inner shell by clamping it at the inner clamping block 9, then rotating the first fixing member 13 to move the conical block 7 downwards or upwards, thereby causing the expansion moving block 4 to reciprocate. The positioning fixing member 21 is then threaded into the positioning screw hole 18, and the second limiting block 11 abuts against the inner and outer walls to adapt to the outer wall of the inner shell. The position of the inner clamping block 9 is then adjusted to press against the inner wall of the inner shell, and the second fixing member 14 presses against the inner bottom side of the inner shell, thus fixing the inner shell. The user can then measure various dimensions of the inner shell as needed. This fixing method allows for fine-tuning based on the actual dimensions of the inner shell to fully expand it, thereby obtaining accurate dimensional data.

[0023] A clamping plate 8 is coaxially arranged on the lower surface of the support plate 3. The third fixing member 15 can be threaded through the clamping plate 8. Several third fixing members 15 are coaxially arranged around the clamping plate 8. Several pillars 2 are also coaxially arranged around the lower surface of the support plate 3. A base plate 1 is horizontally arranged at the lower end of each pillar 2.

[0024] The support column 2 described in this application is detachably mounted on the base plate 1 and the support plate 3 at opposite ends by the fourth fastener 16 and the fifth fastener 17, respectively. Since the third fastener 15 will thread through the clamping plate 8, the lower surface of the support plate 3 will be uneven, which will cause the support plate 3 to be unable to be placed stably. The support plate 3 is suspended by the support column 2 and the base plate 1, thereby solving the problem.

[0025] Several first limiting blocks 5 are provided on the upper surface of the support plate 3 around the top plate 6.

[0026] The first limiting block 5 of this application can be detachably installed via the sixth fixing member 22. This design facilitates the user to accurately install the top plate 6 when installing the clamp.

[0027] The upper surface of the support plate 3 is provided with an external clamp 10 corresponding to each of the extended moving blocks 4.

[0028] The external clamp 10 described in this application is detachably mounted on the support plate 3 by means of a flat-head fastener 20. This design limits the movement distance of the extended moving block 4, thereby preventing the positioning fastener 21 from being unable to be threaded into the positioning screw hole 18, which in turn prevents the second limiting block 11 from abutting against the outer wall of the inner shell and thus prevents the inner shell from being fixed.

[0029] The cone-shaped block 7 has several vertically arranged compression elastic elements 12 whose lower ends abut against the support plate 3.

[0030] This application sets up a compression elastic element 12 so that the cone block 7 can automatically spring upward, without the user having to pry the cone block 7 out.

[0031] The upper end of the positioning and fixing component 21 is provided with a handle.

[0032] By providing a handle, the user can easily insert and remove the positioning fastener 21. Since it is difficult for the user to accurately pull out the positioning fastener 21 after the inner shell is fixed, the upper end of the fastener needs to be slightly modified so that the user can insert and rotate the positioning fastener 21 to insert and remove it.

[0033] In use, the device provided by this utility model involves clamping the inner shell onto the inner clamping block 9, then turning the first fixing member 13 to move the conical block 7 downwards or upwards, thereby causing the expansion moving block 4 to reciprocate. The positioning fixing member 21 is then threaded into the positioning screw hole 18, and the second limiting block 11 abuts against the inner and outer walls to adapt to the outer wall of the inner shell. The position of the inner clamping block 9 is then adjusted to press against the inner wall of the inner shell, and the second fixing member 14 presses against the inner bottom side of the inner shell, thus fixing the inner shell. The user can then measure various dimensions of the inner shell as needed. This fixing method allows for fine-tuning according to the actual dimensions of the inner shell to fully expand it, thereby obtaining accurate dimensional data.

[0034] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0035] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0036] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. An aeroengine combustion chamber inner casing flange inspection and repair fixture, characterized in that, The aero-engine combustion chamber inner shell flange inspection and maintenance clamp comprises a support plate (3), an expansion moving block (4), a top plate (6), a conical block (7), an inner clamping block (9), a first fixing member (13), a second fixing member (14) and a positioning fixing member (21), the top plate (6) is coaxially fixed on the support plate (3), a plurality of expansion moving blocks (4) are coaxially and circumferentially arranged between the support plate (3) and the top plate (6), each expansion moving block (4) can reciprocate towards the axial direction of the support plate (3), and a second limiting block (11) is vertically arranged on the side of the expansion moving block (4) away from the axial center of the support plate (3), a first slot and a second slot (19) are coaxially and circumferentially arranged on the upper surface of the top plate (6), the inner clamping block (9) is movably arranged in the first slot through the second fixing member (14), the support plate (3) and the top plate (6) are coaxially and throughly provided with a through hole matched with the conical block (7), the conical block (7) is coaxially and movably arranged in the through hole through the first fixing member (13), the expansion moving block (4) is provided with a positioning screw hole (18) matched with the positioning fixing member (21), and the positioning fixing member (21) is movably arranged at the second slot (19).

2. An aeroengine combustion chamber inner casing flange inspection and repair fixture according to claim 1, characterised in that, The lower surface of the support plate (3) is coaxially provided with a clamping plate (8), the clamping plate (8) is coaxially provided with a plurality of third fixing members (15) on the circumferential side, the third fixing members (15) can be threadedly arranged through the clamping plate (8), and the lower surface of the support plate (3) is also coaxially and circumferentially provided with a plurality of support columns (2), and the lower end of each support column (2) is horizontally provided with a base plate (1).

3. An aeroengine combustion chamber inner casing flange inspection and service fixture according to claim 1 wherein, The upper surface of the support plate (3) is circumferentially provided with a plurality of first limiting blocks (5) around the circumferential side of the top plate (6).

4. An aeroengine combustion chamber inner casing flange inspection and service fixture according to claim 1 wherein, The upper surface of the support plate (3) is provided with an external clamp (10) corresponding to each expansion moving block (4).

5. An aeroengine combustion chamber inner casing flange inspection and service fixture according to claim 1 wherein, The conical block (7) is vertically provided with a plurality of compression elastic members (12) with the lower ends abutting against the support plate (3).

6. An aeroengine combustion chamber inner casing flange inspection and service fixture according to claim 1 wherein, The upper end of the positioning fixing member (21) is provided with a handle.

Images