Pipeline fixing device used in air conditioning system of aircraft

Abstract

The utility model provides a pipeline fixing device used in an aircraft air conditioning system, which relates to the technical field of aeronautical manufacturing, and comprises a strap, a base and a buckle assembly, the fixed end of the strap is connected with the base, and the free end of the strap is provided with a plurality of adjusting holes; the buckle assembly comprises a buckle seat, a rotating piece, a bolt and a flange plate, a clamping piece is arranged on the buckle seat, the clamping piece is matched with any adjusting hole in an inserted mode, one end of the bolt is rotationally connected with the buckle seat through the rotating piece, the other end of the bolt is connected with the flange plate, a limiting groove is formed in the base, and a limiting protrusion matched with the limiting groove is arranged on the flange plate. After the clamping piece is inserted into the adjusting hole, the bolt is pulled, the flange plate is driven to rotate, and the limiting protrusion is driven to be clamped into the limiting groove, so that the buckle assembly and the base are in locking fit, the fixed end and the free end of the strap are always kept in a locking state, and the reliability, stability and sealing performance of pipeline connection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation manufacturing, in particular to a pipeline fixing device used in an aircraft air-conditioning system. Background Art

[0002] The pipes in aircraft air conditioning systems are important components for transmitting refrigerants, heat media or gases. The stability, sealing and safety of their connections are directly related to the operating efficiency of the air conditioning system.

[0003] Currently, conventional clamp connections are widely used in aircraft air conditioning systems. While these connections can meet connection requirements to a certain extent, they still present several technical challenges. Conventional clamp designs are flawed. Both ends of the clamp are free and equipped with flanges, secured only by bolts. This simple connection method is susceptible to external factors such as vibration in the complex aviation environment, leading to loose connections and compromising reliability, stability, and sealing. Furthermore, a gap exists between the two free ends of the clamp, limiting the contact area with the pipeline and making it difficult to form a uniform, tight sealing surface, posing a safety hazard.

[0004] For example, application number CN202210756205.7 discloses a self-assembling, high-damping clamp for external pipes of aircraft engines.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] The present utility model aims to provide a pipe securing device for aircraft air conditioning systems. This device addresses the technical issues inherent in conventional clamp designs, which lack a locking mechanism and rely solely on bolts for fastening. These clamps are susceptible to external factors such as vibration, leading to loose connections and consequently affecting the reliability, stability, and sealing of the connections. The various technical advantages achieved by the preferred technical solutions provided by this utility model are detailed below.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] The cam is secured to the base with a plurality of holes, the holes being adapted to engage the fixing member and engaging the fixing member so that the fixing member can be engaged with the fixing member and the fixing member can be engaged with the fixing member.

[0009] Preferably, the base is a U-shaped structure, the base plate of the base is a curved surface structure adapted to the pipeline, and a limiting groove is provided at one end of the two side plates of the base away from the fixed end of the hoop.

[0010] Preferably, an anti-slip portion is provided on the upper portion of the limiting groove.

[0011] Preferably, the fixed end of the band is folded outward and extended, and is fixedly connected to the main body of the band, together forming a closed fixed area for fixing the base plate.

[0012] Preferably, one end of the base plate close to the fixed end of the band is bent and extended to form an auxiliary fixing portion, and the auxiliary fixing portion is located on both sides of the main body of the band and has a shape that matches the pipeline.

[0013] Preferably, the clamping member is a trapezoidal plate structure, a large head portion of which is connected to the clamping base plate of the clamping seat, and the clamping member is arranged to be tilted upward in a direction away from the limiting groove.

[0014] Preferably, the rotating member includes a rotating block and a pin shaft, the pin shaft is arranged on both sides of the rotating block, and is rotatably connected to the two snap side plates of the snap seat respectively, the rotating block is provided with a mounting groove, the bolt is threadedly connected to the mounting groove, the abutting surface of the rotating block close to the limiting groove is an arc surface structure, and is provided with an arc-shaped abutting groove adapted to the snap member.

[0015] Preferably, the free end of the strap is bent downward to form an operating portion.

[0016] Preferably, one end of the bolt close to the flange is threadedly connected to a limiting nut.

[0017] The preferred technical solution of the utility model can also produce at least the following technical effects:

[0018] The present invention effectively avoids the technical problems of conventional clamp structures in the prior art, such as the lack of a locking mechanism and the use of bolts for tightening, which are easily affected by external factors such as vibration, resulting in loose connections and thus affecting the reliability, stability and sealing of the connections. The present invention provides a pipe fixing device for an aircraft air conditioning system, comprising a clamp, a base, and a clip assembly, wherein the fixed end of the clamp is connected to the base, and the free end of the clamp is provided with a plurality of adjustment holes; the clip assembly comprises a clip seat, a rotating member, a bolt, and a flange; the clip seat is provided with a clip that plugs into and engages with any of the adjustment holes; one end of the bolt is rotatably connected to the clamp seat via the rotating member, and the other end is connected to the flange; the base is provided with a limiting groove, and the flange is provided with a limiting protrusion that matches the limiting groove; when the clip is inserted into the adjustment hole, the bolt is actuated, which drives the flange to rotate, driving the limiting protrusion to engage with the limiting groove, thereby locking the clip assembly with the base, thereby maintaining a locked state between the fixed end and the free end of the clamp. This utility model incorporates a locking mechanism. Once the clip is inserted into the adjustment hole and initially positioned, the bolt is twisted to flip the flange, which in turn forces the stopper protrusion into the stopper groove, locking the clip assembly with the base. This ensures that the fixed and free ends of the strap remain in a stable locked state. This locking mechanism effectively prevents loosening, improves the reliability of the pipeline connection, and enhances the security of pipeline fixation. Even when exposed to external factors such as vibration during aircraft operation, the connection remains stable and airtight. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a structural schematic diagram of a pipe fixing device for an aircraft air conditioning system provided by the utility model;

[0021] Figure 2 This is a schematic structural diagram of a band used in a pipe fixing device in an aircraft air conditioning system provided by the utility model;

[0022] Figure 3 This is a structural schematic diagram of a base for a pipe fixing device in an aircraft air conditioning system provided by the utility model;

[0023] Figure 4The utility model is a structural schematic diagram of a clip assembly of a pipe fixing device for an aircraft air conditioning system.

[0024] In the picture:

[0025] 1. Band; 11. Fixed end; 111. Fixed area; 12. Free end; 121. Adjustment hole; 122. Operating portion;

[0026] 2. Base; 21. Base plate; 22. Base side plate; 221. Limiting groove; 2211. Anti-slip portion; 23. Auxiliary fixing portion;

[0027] 3. Buckle seat; 31. Buckle bottom plate; 32. Buckle side plate; 33. Snap-on fitting; 331. Small head;

[0028] 4. Rotating block; 41. Mounting groove; 42. Abutment surface; 421. Abutment groove; 5. Pin;

[0029] 6. Bolts;

[0030] 7. Flange; 71. Limiting protrusion; 72. Through hole. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0032] like Figure 1-Figure 4 As shown, the utility model provides a pipe fixing device for an aircraft air-conditioning system, including a band 1, a base 2 and a buckle assembly, the fixed end 11 of the band 1 is connected to the base 2, and the free end 12 of the band 1 is provided with a plurality of adjustment holes 121; the buckle assembly includes a buckle seat 3, a rotating member, a bolt 6 and a flange 7, the buckle seat 3 is provided with a clamping member 33, the clamping member 33 is plugged into and matched with any adjustment hole 121, one end of the bolt 6 is rotatably connected to the buckle seat 3 through the rotating member, and the other end is connected to the flange 7, a limiting groove 221 is provided on the base 2, and a limiting protrusion 71 adapted to the limiting groove 221 is provided on the flange 7; when the clamping member 33 is inserted into the adjusting hole 121, the bolt 6 is bent, driving the flange 7 to rotate, driving the limiting protrusion 71 to snap into the limiting groove 221, so that the buckle assembly and the base 2 are locked and matched, so that the fixed end 11 and the free end 12 of the band 1 are always kept in a locked state.

[0033] By adding a locking mechanism, once the clip 33 is inserted into the adjustment hole 121, the bolt 6 is twisted, causing the flange 7 to flip, which in turn drives the limiting protrusion 71 into the limiting groove 221, thereby locking the clip assembly with the base 2. This ensures that the fixed end 11 and free end 12 of the strap 1 remain in a stable locked state. This locking mechanism effectively prevents loosening of the connection, improves the reliability of the pipeline connection, and enhances the security of the pipeline fixation. Even when exposed to external factors such as vibration during aircraft operation, the connection stability and sealing can be maintained.

[0034] Pipe fixing device

[0035] As an optional embodiment, the base 2 is a U-shaped structure, the base plate 21 of the base 2 is a curved surface structure adapted to the pipeline, and the two base side plates 22 of the base 2 are provided with a limiting groove 221 at one end away from the fixed end 11 of the hoop 1.

[0036] The base plate 21 is a curved surface structure adapted to the pipeline, which can better fit the outer contour of the pipeline, increase the contact area between the two, and improve the fixing stability.

[0037] The limiting grooves 221 of the two side plates 22 of the base 2 cooperate with the limiting protrusions 71 on the flange 7 to achieve locking.

[0038] As an optional implementation, an anti-slip portion 2211 is provided on the upper portion of the limiting groove 221 .

[0039] Furthermore, the upper portion of the limiting groove 221 extends outward to form an anti-slip portion 2211 , which can further enhance the reliability of the locking between the limiting groove 221 and the limiting protrusion 71 .

[0040] As an optional embodiment, the fixing end 11 of the band 1 is folded outward and extended, and is fixedly connected to the main body of the band 1 to form a closed fixing area 111 for fixing the base plate 21 .

[0041] Furthermore, the fixed end 11 of the band 1 is folded outward and extended, and is welded to the main body of the band 1 .

[0042] This arrangement enables the band 1 to be more firmly fixed on the base plate 21 .

[0043] As an optional embodiment, one end of the base plate 21 close to the fixed end 11 of the band 1 is bent and extended to form an auxiliary fixing portion 23. The auxiliary fixing portion 23 is located on both sides of the main body of the band 1 and has a shape that matches the pipeline.

[0044] The auxiliary fixing portion 23 can further increase the contact neps with the pipeline, enhance the fit between the base 2 and the pipeline, and further improve the fixing stability.

[0045] As an optional embodiment, the clamping member 33 is a trapezoidal plate structure, the large head of which is connected to the clamping base 31 of the clamping seat 3, and the clamping member 33 is arranged to be tilted upward in a direction away from the limiting groove 221.

[0046] This arrangement allows the clip 33 to be inserted into the adjustment hole 121 more smoothly, and can also produce a self-locking effect when subjected to force, thereby improving the stability of the connection.

[0047] As an optional embodiment, the rotating part includes a rotating block 4 and a pin shaft 5. The pin shaft 5 is arranged on both sides of the rotating block 4 and is rotatably connected to the two snap side plates 32 of the snap seat 3 respectively. The rotating block 4 is provided with a mounting groove 41, and the bolt 6 is threadedly connected to the mounting groove 41. The abutment surface 42 of the rotating block 4 close to the limiting groove 221 is an arc surface structure, and is provided with an arc-shaped abutment groove 421 adapted to the snap-connector 33.

[0048] Furthermore, the mounting groove 41 is provided through the rotating block 4, and the inner wall surface of the mounting groove 41 is provided with an internal thread section that is threadedly matched with the external thread section of the bolt 6. By twisting the bolt 6, its relative position with the rotating block 4 is adjusted to meet different fastening requirements.

[0049] The bolt 6 is bent and rotated toward the limiting groove 221, driving the flange 7 and the rotating block 4 to rotate together around the pin 5. As the bolt 6 rotates, the limiting protrusion 71 on the flange 7 is engaged in the limiting groove 221 of the base 2, achieving a secure lock between the clip assembly and the base 2. The rotation of the rotating block 4 causes its abutment surface 42 to rotate downward. The abutment surface 42 is in close contact with the band 1 and applies pressure, so that the band 1 is in close contact with the clip base 31. At the same time, the abutment groove 421 is in close contact with the clip 33 and applies pressure, so that the small head 331 of the clip 33 is more tightly abutted against the band 1, thereby enhancing the connection stability between the clip 33 and the main body of the band 1 and further enhancing the locking effect.

[0050] As an optional embodiment, the free end 12 of the cuff 1 is bent downward to form an operating portion 122 .

[0051] With this arrangement, even when the cuff 1 is in a locked state, there is still a gap between the operating portion 122 and the body of the cuff 1 , making it easier for an operator to identify and operate the cuff 1 .

[0052] As an optional implementation, one end of the bolt 6 close to the flange 7 is threadedly connected to a limiting nut.

[0053] Furthermore, a through hole 72 is provided on the flange 7 , and the inner wall surface of the through hole 72 is designed to be non-threaded and is sleeved on the bolt 6 .

[0054] The function of the limiting nut is to prevent the flange 7 from falling off and to provide support for the flange 7 during the locking process.

[0055] As an optional embodiment, the hoop 1 is made of 301 stainless steel, the base 2 is made of 20Cr13 stainless steel, the bolt 6 and the flange 7 are made of 304 stainless steel, the rotating block 4 and the pin 5 are made of 630 stainless steel, and the surface of the snap assembly and the base 2 is galvanized to enhance corrosion resistance.

[0056] It should be noted that the specifications and shapes of the aforementioned components can be designed according to the specifications and shapes of the connected pipes.

[0057] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0058] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be construed as limiting the present invention. In addition, the terms "first", "second", "third", etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0060] Throughout this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "an example" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0061] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A pipe fixing device for an aircraft air conditioning system, characterized in that: The cam is secured to the base with a secure grip on the spring which is secured to the base during operation, and the cam has a lockhole on which the latch is secured. The cam is secured to the base with a secure grip on the spring which is secured to the base during operation.

2. A pipe fixing device for an aircraft air conditioning system according to claim 1, characterized in that: The base is a U-shaped structure, the base plate of the base is a curved surface structure adapted to the pipeline, and a limiting groove is provided at one end of the two side plates of the base away from the fixed end of the hoop.

3. A pipe fixing device for an aircraft air conditioning system according to claim 2, characterized in that: An anti-slip portion is provided on the upper portion of the limiting groove.

4. A pipe fixing device for an aircraft air conditioning system according to claim 2, characterized in that: The fixed end of the band is folded outward and extended, and is fixedly connected to the main body of the band, together forming a closed fixed area for fixing the base plate.

5. The pipe fixing device for an aircraft air conditioning system according to claim 2, characterized in that: One end of the base plate close to the fixed end of the band is bent and extended to form an auxiliary fixing portion. The auxiliary fixing portion is located on both sides of the main body of the band and has a shape that matches the pipeline.

6. The pipe fixing device for an aircraft air conditioning system according to claim 1, characterized in that: The clamping member is a trapezoidal plate structure, a large head portion of which is connected to the clamping base plate of the clamping seat, and the clamping member is arranged to be tilted upward in a direction away from the limiting groove.

7. The pipe fixing device for an aircraft air conditioning system according to claim 1, characterized in that: The rotating member includes a rotating block and a pin shaft, the pin shaft is arranged on both sides of the rotating block and is rotatably connected to the two snap side plates of the snap seat respectively, the rotating block is provided with a mounting groove, the bolt is threadedly connected to the mounting groove, the abutting surface of the rotating block close to the limiting groove is an arc surface structure, and is provided with an arc-shaped abutting groove adapted to the snap member.

8. The pipe fixing device for an aircraft air conditioning system according to claim 1, characterized in that: The free end of the band is bent downward to form an operating portion.

9. The pipe fixing device for an aircraft air conditioning system according to claim 1, characterized in that: One end of the bolt close to the flange is threadedly connected with a limiting nut.

Images