Airplane air inlet channel fixing tool

Abstract

The utility model discloses an airplane air inlet channel fixing tool which comprises an air inlet channel body, a base, a liftable bottom support and a fixing frame arranged on the upper wall of the base. After the air inlet channel body is placed in the fixing frame, the bottom of the air inlet channel body is supported in advance through the bottom support, then the locking screws on the multiple sets of first fixing blocks, second fixing blocks and third fixing blocks are loosened, and the first fixing blocks, the second fixing blocks and the third fixing blocks are moved towards the outer wall of the air inlet channel body; the first clamping face, the second clamping face and the third clamping face which are arranged on the sides, facing the center of the fixing frame, of the first fixing block, the second fixing block and the third fixing block can be completely matched with the appearance of the air inlet channel body, and the part, except a port, of the air inlet channel body can be well fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft part processing, in particular to a fixing tooling for an aircraft air inlet duct. Background Art

[0002] As the inlet and passage of air required by a jet engine, the air inlet duct not only provides a certain flow rate of air for the aircraft engine, but also ensures the normal operation of the compressor and combustion chamber with the inlet air flow field. During flight, the air inlet duct needs to decelerate and pressurize the high-speed air flow, converting the kinetic energy of the air flow into pressure energy. As the flight speed increases, the pressurization effect of the air inlet duct becomes more and more significant. The pressurization effect during supersonic flight can far exceed that of the compressor. Therefore, the aircraft air inlet duct plays an important role in improving flight performance.

[0003] Traditional air inlet ducts are manufactured in metal blocks and assembled by welding or mechanical connection. Due to the large weight of metal materials, they cannot meet the lightweight design concept. Moreover, to adapt to the structure of the air inlet duct, a large amount of metal cutting is required. After welding or mechanical connection and assembly, connection failure or fracture is likely to occur under high-frequency vibration and load, unable to meet the further development needs of supersonic aircraft. With the development of aerospace technology, multi-layer composite materials with many advantages such as low specific gravity, high specific strength, and high specific modulus have gradually become the preferred materials in the aerospace field that are unparalleled, and are also the preferred materials for manufacturing aircraft air inlet ducts. When using multi-layer composite materials to manufacture aircraft air inlet ducts, fixing tooling is required for fixing. Currently, common general-purpose clamping tooling is usually used for fixing. The general-purpose clamping tooling is difficult to adapt to the shape of the aircraft air inlet duct, resulting in poor fixing effect. Therefore, it is necessary to optimize and improve the structure of the fixing tooling for the aircraft air inlet duct. Summary of the Utility Model

[0004] The purpose of the utility model is to propose a fixing tooling for an aircraft air inlet duct to solve the deficiencies existing in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical solutions: An aircraft intake duct fixing tooling, comprising an intake duct body, a base, a liftable bottom support, and a fixing frame arranged on the upper wall of the base. The bottom support is arranged inside the base, and the fixing frame is arranged on the upper wall of the base. The fixing frame is composed of a top frame, a side frame, and a bottom frame arranged in sequence from top to bottom. A clamping structure for fixing the intake duct body is arranged on the fixing frame. The clamping structure includes multiple groups of first fixing blocks, second fixing blocks, and multiple groups of third fixing blocks. Multiple groups of the first fixing blocks are respectively detachably connected to the bottom frame through multiple groups of first fixing seats. Multiple groups of the second fixing blocks are respectively detachably connected to the side frame through multiple groups of second fixing seats. Multiple groups of the third fixing blocks are respectively detachably connected to the top frame through multiple groups of third fixing seats. A hoisting structure for hoisting the fixing frame for the installation of the fixing frame and the base is arranged on the outer wall of the fixing frame.

[0006] As a further description of the above technical solution:

[0007] Long strip holes for conveniently adjusting the position are arranged on the inner walls of the first fixing block, the second fixing block, and the third fixing block. The first fixing block, the second fixing block, and the third fixing block are respectively detachably connected to the first fixing seat, the second fixing seat, and the third fixing seat through multiple groups of locking screws. The locking screws are slidably connected to the inner side wall of the long strip hole. The length directions of the long strip holes on the first fixing block, the second fixing block, and the third fixing block are all perpendicular to the center line of the front view section of the fixing frame.

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

[0009] One side of the first fixing block facing the center of the fixing frame is provided with a first clamping surface that matches the outer dimension of the lower part of the intake duct body.

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

[0011] One side of the second fixing block facing the center of the fixing frame is provided with a second clamping surface that matches the outer dimension of the side wall part of the intake duct body.

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

[0013] One side of the third fixing block facing the center of the fixing frame is provided with a third clamping surface that matches the outer dimension of the upper part of the intake duct body.

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

[0015] The hoisting structure includes four groups of lifting rings. The four groups of lifting rings are respectively threadedly connected to the left and right side walls of the fixing frame in pairs of two.

[0016] The utility model has the following beneficial effects:

[0017] Compared with the prior art, for the aircraft inlet duct fixing tooling, after the inlet duct body is placed inside the fixing frame, the bottom support is used to pre-support the bottom of the inlet duct body. Then, the locking screws on multiple groups of the first fixing block, the second fixing block, and the third fixing block are loosened, and the first fixing block, the second fixing block, and the third fixing block are moved towards the outer wall of the inlet duct body until they abut, and then the locking screws are tightened. Through the first clamping surface, the second clamping surface, and the third clamping surface provided on the side of the first fixing block, the second fixing block, and the third fixing block towards the center of the fixing frame, the outer shape of the inlet duct body can be fully adapted, and a good fixing effect can be achieved on the part of the inlet duct body except for the port. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of an aircraft inlet duct fixing tooling proposed by the present utility model;

[0019] Figure 2 is an aircraft inlet duct fixing tooling proposed by the present utility model Figure 1 partial enlarged view at A in;

[0020] Figure 3 is an aircraft inlet duct fixing tooling proposed by the present utility model Figure 1 partial enlarged view at B in;

[0021] Figure 4 is an aircraft inlet duct fixing tooling proposed by the present utility model Figure 1 partial enlarged view at C in.

[0022] LEGEND DESCRIPTION:

[0023] 1. Base; 2. Underframe; 3. Side frame; 4. Top frame; 5. Hoisting ring; 6. First fixing seat; 7. First fixing block; 8. Long strip hole; 9. First clamping surface; 10. Second fixing seat; 11. Second fixing block; 12. Second clamping surface; 13. Third fixing seat; 14. Third fixing block; 15. Third clamping surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Referring to Figures 1 to 4, a fixing tool for an aircraft inlet duct provided by the utility model: includes an inlet duct body, a base 1, a liftable bottom support, and a fixing frame arranged on the upper wall of the base 1. The bottom support is arranged inside the base 1, and the bottom support can be any one of a cylinder and an oil cylinder, which plays a role of pushing upward from the bottom to cooperate with the fixing frame to fix the inlet duct body;

[0026] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, in order to fix the outer wall of the inlet duct body, the fixing frame is arranged on the upper wall of the base 1. The fixing frame is composed of a top frame 4, a side frame 3, and a bottom frame 2 arranged in sequence from top to bottom. A clamping structure for fixing the inlet duct body is arranged on the fixing frame. The clamping structure includes multiple groups of first fixing blocks 7, second fixing blocks 11, and multiple groups of third fixing blocks 14. A first clamping surface 9 that matches the outer shape size of the lower part of the inlet duct body is arranged on one side of the first fixing block 7 facing the center of the fixing frame. A second clamping surface 12 that matches the outer shape size of the side wall part of the inlet duct body is arranged on one side of the second fixing block 11 facing the center of the fixing frame. A third clamping surface 15 that matches the outer shape size of the upper part of the inlet duct body is arranged on one side of the third fixing block 14 facing the center of the fixing frame. By setting the first clamping surface 9, the second clamping surface 12, and the third clamping surface 15 that match the outer shape of the inlet duct body, the first fixing block 7, the second fixing block 11, and the third fixing block 14 can better tightly clamp the outer wall of the inlet duct body, and the fixing effect is good;

[0027] As Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, multiple groups of first fixing blocks 7 are respectively detachably connected to the chassis 2 through multiple groups of first fixing seats 6. Multiple groups of second fixing blocks 11 are respectively detachably connected to the side frames 3 through multiple groups of second fixing seats 10. Multiple groups of third fixing blocks 14 are respectively detachably connected to the top frame 4 through multiple groups of third fixing seats 13. Long strip holes 8 for facilitating position adjustment are provided on the inner walls of the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14. The first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 are respectively detachably connected to the first fixing seats 6, the second fixing seats 10, and the third fixing seats 13 through multiple groups of locking screws. The locking screws are slidably connected to the inner side walls of the long strip holes 8. The length directions of the long strip holes 8 on the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 are all perpendicular to the center line of the front view section of the fixing frame. Before the air inlet duct body is placed into the fixing frame, the locking screws on the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 are loosened. Through the long strip holes 8, the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 can all be moved towards the side away from the center of the fixing frame to make room for the air inlet duct body to enter. After the air inlet duct body is sent into the fixing frame, the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 are all moved towards the outer wall of the air inlet duct body until they are tightly pressed, and then the locking screws are tightened to achieve fixation;

[0028] As Figure 1 shown, for the convenience of installing the fixing frame, a lifting structure for lifting the fixing frame so that the fixing frame can be installed with the base 1 is provided on the outer wall of the fixing frame. The lifting structure includes four groups of lifting rings 5. The four groups of lifting rings 5 are respectively threadedly connected to the left and right side walls of the fixing frame in pairs of two. Through the lifting rings 5, the fixing frame can be lifted by using common lifting equipment on the market and then assembled with the base 1.

[0029] Working principle: By providing the first clamping surface 9, the second clamping surface 12, and the third clamping surface 15 that are adapted to the outer shape of the air inlet duct body, the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 can better tightly clamp the outer wall of the air inlet duct body, and the fixing effect is good. Before the air inlet duct body is placed into the fixing frame, the locking screws on the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 are loosened. Through the long strip holes 8, the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 can all be moved towards the side away from the center of the fixing frame to make room for the air inlet duct body to enter. After the air inlet duct body is sent into the fixing frame, the first fixing blocks 7, the second fixing blocks 11, and the third fixing blocks 14 are all moved towards the outer wall of the air inlet duct body until they are tightly pressed, and then the locking screws are tightened to achieve fixation. The fixing frame can be lifted by using common lifting equipment on the market through the lifting rings 5 and then assembled with the base 1.

[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An aircraft air inlet fixing tool, characterized in that: The invention comprises an air inlet duct body, a base (1), a liftable bottom support and a fixing frame arranged on the upper wall of the base (1), wherein the bottom support is arranged inside the base (1), the fixing frame is arranged on the upper wall of the base (1), the fixing frame is composed of a top frame (4), a side frame (3) and a bottom frame (2) arranged in sequence from top to bottom, the fixing frame is provided with a clamping structure for fixing the air inlet duct body, the clamping structure comprises a plurality of groups of first fixing blocks (7), a second fixing block (11) and a plurality of groups of third fixing blocks (14), the plurality of groups of the first fixing blocks (7) are detachably connected to the bottom frame (2) through a plurality of groups of first fixing seats (6), the plurality of groups of the second fixing blocks (11) are detachably connected to the side frames (3) through a plurality of groups of second fixing seats (10), the plurality of groups of the third fixing blocks (14) are detachably connected to the top frame (4) through a plurality of groups of third fixing seats (13), and the outer wall of the fixing frame is provided with a lifting structure for lifting the fixing frame so as to install the fixing frame with the base (1).

2. The aircraft air inlet fixing tool according to claim 1, characterized in that: The inner walls of the first fixing block (7), the second fixing block (11) and the third fixing block (14) are all provided with elongated holes (8) for facilitating position adjustment; the first fixing block (7), the second fixing block (11) and the third fixing block (14) are respectively detachably connected to the first fixing seat (6), the second fixing seat (10) and the third fixing seat (13) through a plurality of sets of locking screws; the locking screws are slidably connected to the inner side walls of the elongated holes (8); the length directions of the elongated holes (8) on the first fixing block (7), the second fixing block (11) and the third fixing block (14) are all perpendicular to the center line of the front view cross section of the fixing frame.

3. The aircraft air inlet fixing tool according to claim 2, characterized in that: A first clamping surface (9) matching the outer dimensions of the lower part of the air inlet main body is provided on one side of the first fixing block (7) facing the center of the fixing frame.

4. The aircraft air inlet fixing tool according to claim 3, characterized in that: A second clamping surface (12) matching the outer dimensions of the side wall portion of the air inlet body is provided on one side of the second fixing block (11) facing the center of the fixing frame.

5. The aircraft air inlet fixing tool according to claim 4, characterized in that: The third fixing block (14) is provided with a third clamping surface (15) on one side facing the center of the fixing frame, the third clamping surface (15) being consistent with the outer dimensions of the upper part of the air inlet main body.

6. The aircraft air inlet fixing tool according to claim 5, characterized in that: The hoisting structure comprises four groups of hoisting rings (5), and the four groups of hoisting rings (5) are threadedly connected to the left and right side walls of the fixing frame in pairs of two.

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