A fuselage

Abstract

The utility model relates to a fuselage, including the outer skin of fuselage, the front part of outer skin is equipped with the cockpit entrance and passenger cabin entrance, the outer skin in cockpit entrance and passenger cabin entrance place is fixedly connected with a plurality of bearing beams, the outer skin in the middle and rear part of fuselage is inserted and is fixed with a plurality of bearing framework, the inner wall of outer skin both sides respectively pastes fixedly has the cross distribution's inner lining, the inner lining and outer skin in form has a plurality of lines of through -wire slot, through -wire slot respectively inserts and is fixed with a plurality of wire protection tube, the inner lining on wire protection tube intersection place forms the round wire -threading positioning hole, the pipe orifice of adjacent wire protection tube at wire -threading positioning hole place is fixedly connected together. The wire protection tube is hidden in the fuselage and sets up in the inner lining of fuselage in this fuselage, and the pipe orifice at wire protection tube intersection place is connected together, based on the inner lining and pipe orifice connection in the wire protection tube setting positioning in the fuselage, and the wire protection tube is hidden in the inner lining, and the good degree of beauty.

Description

Technical fields:

[0001] This utility model relates to the technical field of aircraft fuselages, and more specifically to an aircraft fuselage. Background technology:

[0002] Light sport aircraft are small aircraft designed for non-commercial purposes such as flight training, private recreation, and air sports. Currently, the fuselage of a light sport aircraft mainly consists of an outer skin and an inner frame. Various wiring needs to be installed within the fuselage, such as cockpit and passenger cabin latches and traction cables, wing control lines, and brake lines. These cables are generally housed within protective conduits. Because the wiring has multiple directions, multiple conduits are typically used to house the cables. These conduits are fixed to the inner wall of the fuselage using clamps, requiring multiple bases connected to these clamps within the fuselage. Furthermore, the conduits are exposed, which is unsightly. Therefore, improvements to the layout and connection structure of the protective conduits are needed. Utility model content:

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a machine body in which the protective tube is hidden within the machine body and the inner lining plate inside the machine body, and the pipe openings at the junction of the protective tubes are connected together. Based on the connection between the inner lining plate and the pipe openings, the protective tube is positioned inside the machine body and is hidden within the inner lining plate, resulting in a good aesthetic appearance.

[0004] An airframe includes an outer skin. The front of the outer skin has a cockpit entrance and a passenger compartment entrance. Several "I"-shaped load-bearing beams are fixedly connected inside the outer skin at the cockpit entrance and the passenger compartment entrance. Several "U"-shaped load-bearing frames are inserted and fixed inside the outer skin at the middle and rear of the airframe. Cross-distributed inner lining plates are attached and fixed to the inner walls on both sides of the outer skin. Several cable trays are formed inside the inner lining plates and the outer skin. Several cable guards are inserted and fixed inside the cable trays. Circular cable positioning holes are formed on the inner lining plates at the junctions of the cable guards. The openings of adjacent cable guards at the cable positioning holes are fixedly connected together.

[0005] Preferably, the end of the inner lining plate away from the wire positioning hole is formed with a through hole, and the opening of the wire protection tube protrudes from the through hole of the inner lining plate.

[0006] Preferably, the opening of the protective tube at the wire positioning hole is formed with an outwardly turned spiral edge, and a circular connecting sleeve is pivotally connected to the protective tube, with the connecting sleeve abutting against the spiral edge; cylindrical connecting support shafts are formed on the opposite outer walls of the connecting sleeve, and insertion holes are formed inside the connecting support shafts, penetrating the two opposite outer walls of the connecting support shafts; threaded holes are formed on the side end faces of the connecting support shafts, and locking studs are screwed into the threaded holes; stepped holes are formed inside the locking studs, and steel wire ropes are inserted into the stepped holes; cylindrical limiting heads are fixed to both ends of the steel wire ropes, and the limiting head at one end of the steel wire rope is located in the stepped hole of the locking stud; the steel wire rope is inserted into the insertion hole of the connecting support shaft and clamped and fixed between the connecting support shaft and the locking stud;

[0007] The steel wire ropes between the adjacent protective pipes are interwoven and connected together.

[0008] Preferably, one end of the connecting sleeve is formed with an annular sheath, which is fitted onto the spiral edge, and the other end of the connecting sleeve abuts against a limiting sleeve, which is inserted and fixed onto the protective tube.

[0009] Preferably, the stepped hole on the locking stud consists of a large hole and a small hole. The wire rope is inserted into the small hole of the stepped hole, and the limiting head is inserted into the large hole of the stepped hole. The length of the limiting head is less than the length of the large hole, and the diameter of the limiting head is greater than the diameter of the small hole in the stepped hole.

[0010] Preferably, the diameter of the upper limit head of the wire rope is smaller than the diameter of the insertion hole on the connecting support shaft.

[0011] Preferably, the diameter of the wire positioning hole on the inner lining plate is larger than the outer diameter of the wire protection tube.

[0012] The beneficial effects of this utility model are as follows:

[0013] The protective tube is hidden inside the machine body and the inner lining plate. The pipe openings at the junction of the protective tubes are connected together. Based on the connection between the inner lining plate and the pipe openings, the protective tube is positioned inside the machine body and is hidden inside the inner lining plate, which improves the aesthetics. Attached image description:

[0014] Figure 1 This is a schematic diagram of the overall structure of the fuselage of this utility model;

[0015] Figure 2 This is a partial structural diagram of the cable protection tube inside the fuselage of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the inner sheath tube opening of this utility model.

[0017] Figure 4 This is a cross-sectional view of the opening of the inner protective conduit of this utility model.

[0018] In the diagram: 1. Outer skin; 2. Load-bearing beam; 3. Load-bearing frame; 4. Inner lining plate; 41. Threading positioning hole; 5. Cable sheath; 51. Swivel edge; 6. Connecting sleeve; 61. Sheath; 62. Connecting support shaft; 63. Insertion hole; 64. Threaded hole; 7. Locking stud; 71. Stepped hole; 8. Wire rope; 9. Limiting head; 10. Limiting sleeve. Detailed implementation method:

[0019] Example: See Figures 1 to 4 As shown, an airframe includes an outer skin 1. The front of the outer skin 1 has a cockpit entrance and a passenger cabin entrance. Several "I"-shaped load-bearing beams 2 are fixedly connected inside the outer skin 1 at the cockpit entrance and the passenger cabin entrance. Several "U"-shaped load-bearing frames 3 are inserted and fixed inside the outer skin 1 at the middle and rear of the airframe. Cross-distributed inner lining plates 4 are pasted and fixed on the inner walls on both sides of the outer skin 1. Several wire passage grooves are formed inside the inner lining plates 4 and the outer skin 1. Several wire protection tubes 5 are inserted and fixed inside the wire passage grooves. Circular wire-passing positioning holes 41 are formed on the inner lining plates 4 at the intersection of the wire protection tubes 5. The tube openings of adjacent wire protection tubes 5 at the wire-passing positioning holes 41 are fixedly connected together.

[0020] The end of the inner lining plate 4 away from the wire positioning hole 41 is formed with a through hole, and the opening of the wire protection tube 5 is exposed through the through hole of the inner lining plate 4. That is, based on the consideration of wire harness insertion and protection, one end of the wire protection tube 5 is set inside the inner lining plate 4, and the other end is exposed outside the inner lining plate 4.

[0021] The opening of the protective tube 5 at the threading positioning hole 41 is formed with an outwardly turned spiral edge 51. When threading the wire inside the protective tube 5, the spiral edge 51 can prevent the opening of the protective tube 5 from scratching the wire bundle. A circular connecting sleeve 6 is pivotally connected to the protective tube 5, and the connecting sleeve 6 abuts against the spiral edge 51. Cylindrical connecting shafts 62 are formed on the opposite outer walls of the connecting sleeve 6. Insertion holes 63 are formed inside the connecting shafts 62, penetrating the two opposite outer walls of the connecting shafts 62. The side end faces of the connecting shafts 62 are formed The device has a threaded hole 64 opposite to the insertion hole 63. A locking stud 7 is screwed into the threaded hole 64. A stepped hole 71 is formed inside the locking stud 7, penetrating both ends of the locking stud 7. A steel wire rope 8 is inserted into the stepped hole 71. A cylindrical limiting head 9 is fixed to both ends of the steel wire rope 8. The limiting head 9 at one end of the steel wire rope 8 is located in the stepped hole 71 of the locking stud 7. The steel wire rope 8 is inserted into the insertion hole 63 of the connecting support shaft 62 and clamped and fixed between the connecting support shaft 62 and the locking stud 7.

[0022] The steel wire ropes 8 between adjacent protective tubes 5 are interlocked and connected together. By loosening the locking studs 7, the steel wire ropes 8 can move and detach from the connecting support shaft 61. The steel wire ropes 8 on the two protective tubes 5 can cross each other. Then, after passing through various insertion holes 63, the steel wire ropes 8 are tightened and the locking studs 7 are tightened to fix the steel wire ropes 8. Thus, the adjacent protective tubes 5 are pulled and fixed together by the steel wire ropes 8. This makes it convenient to connect the protective tubes 5 at the junction and prevent the protective tubes from moving. Moreover, the operation can be carried out after the wire is threaded inside the protective tube 5, which is convenient.

[0023] One end of the connecting sleeve 6 is formed with an annular sheath 61, which is fitted onto the spiral edge 51. The other end of the connecting sleeve 6 abuts against the limiting sleeve 10, which is inserted and fixed onto the protective tube 5. The connecting sleeve 6 restricts the axial movement of the connecting sleeve 6 based on the limiting sleeve 10 and the spiral edge 51, and can only rotate radially. At the same time, the sheath 61 can cover the outer ring of the spiral edge 51.

[0024] The stepped hole 71 on the locking stud 7 consists of a large hole and a small hole. The wire rope 8 is inserted into the small hole of the stepped hole 71, and the limiting head 9 is inserted into the large hole of the stepped hole 71. The length of the limiting head 9 is less than the length of the large hole, and the diameter of the limiting head 9 is greater than the diameter of the small hole in the stepped hole 71. The wire rope 8 will not detach from the locking stud 7 because of the limiting head 9.

[0025] The diameter of the upper limit head 9 of the wire rope 8 is smaller than the diameter of the insertion hole 63 on the connecting support shaft 62.

[0026] The diameter of the threading positioning hole 41 on the inner lining plate 4 is larger than the outer diameter of the wire protection tube 5. The threading positioning hole 41 needs to be of a certain size. If it is too small, it will be inconvenient during the threading process.

[0027] Working principle: This structure is the fuselage of a light sport aircraft. Its specific features are reflected in the layout and connection structure of the wire protection tube 5 inside the fuselage. By attaching and fixing it to the inner liner plate 4 on the inside of the fuselage, the inner liner plate 4 can cover the wire protection tube 5 and restrict the radial movement of the wire protection tube 5. As for the axial movement of the wire protection tube 5 inside the inner liner plate 4, the wire protection tubes 5 at the junction are connected together, thereby achieving the constraint of the wire protection tube 5.

[0028] Meanwhile, in order to facilitate the connection of the protective tubes 5 together, a wire positioning hole 41 is started on the inner lining plate 4 at the junction of the protective tubes 5. The wire can be pulled through the wire positioning hole 41, and the protective tubes 5 can be connected together, which facilitates the installation of the wiring inside the machine body.

[0029] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.

Claims

1. A fuselage, comprising an outer skin (1) of the fuselage, wherein the front of the outer skin (1) is provided with a cockpit entrance and a passenger cabin entrance, wherein a plurality of "I"-shaped load-bearing beams (2) are fixedly connected inside the outer skin (1) at the cockpit entrance and the passenger cabin entrance, and a plurality of "U"-shaped load-bearing frames (3) are inserted and fixed inside the outer skin (1) at the middle and rear of the fuselage, characterized in that: On the inner walls of both sides of the outer skin (1), there are cross-distributed inner lining plates (4). Several wire passage grooves are formed in the inner lining plates (4) and the outer skin (1). Several wire protection tubes (5) are inserted and fixed in the wire passage grooves. A circular wire positioning hole (41) is formed on the inner lining plate (4) at the intersection of the wire protection tubes (5). The openings of the adjacent wire protection tubes (5) at the wire positioning hole (41) are fixedly connected together.

2. The fuselage according to claim 1, characterized in that: The end of the inner lining plate (4) away from the wire positioning hole (41) is formed with a through hole, and the opening of the wire protection tube (5) is exposed through the through hole of the inner lining plate (4).

3. The fuselage according to claim 1, characterized in that: The end of the wire guide tube (5) at the wire positioning hole (41) is formed with an outwardly turned spiral edge (51). A circular connecting sleeve (6) is pivotally connected to the wire guide tube (5), and the connecting sleeve (6) abuts against the spiral edge (51). Cylindrical connecting shafts (62) are formed on the opposite outer walls of the connecting sleeve (6). Insertion holes (63) penetrating the two opposite outer walls of the connecting shaft (62) are formed inside the connecting shaft (62). A threaded hole (64) is formed on the side end face of the connecting shaft (62) opposite to the insertion hole (63). 64) A locking stud (7) is screwed in. A stepped hole (71) is formed in the locking stud (7) through both ends of the locking stud (7). A steel wire rope (8) is inserted into the stepped hole (71). A cylindrical limiting head (9) is fixed to both ends of the steel wire rope (8). The limiting head (9) at one end of the steel wire rope (8) is set in the stepped hole (71) of the locking stud (7). The steel wire rope (8) is inserted into the insertion hole (63) of the connecting support shaft (62) and clamped and fixed between the connecting support shaft (62) and the locking stud (7). The steel wire ropes (8) between the adjacent protective pipes (5) are interlocked and connected together.

4. The fuselage according to claim 1, characterized in that: One end of the connecting sleeve (6) is formed with an annular sheath (61), which is fitted onto the spiral edge (51). The other end of the connecting sleeve (6) abuts against the limiting sleeve (10), which is inserted and fixed onto the protective tube (5).

5. A fuselage according to claim 3, characterized in that: The stepped hole (71) on the locking stud (7) consists of a large hole and a small hole. The wire rope (8) is inserted into the small hole of the stepped hole (71), and the limiting head (9) is inserted into the large hole of the stepped hole (71). The length of the limiting head (9) is less than the length of the large hole, and the diameter of the limiting head (9) is greater than the diameter of the small hole in the stepped hole (71).

6. A fuselage according to claim 5, characterized in that: The diameter of the upper limit head (9) of the wire rope (8) is smaller than the diameter of the insertion hole (63) on the connecting support shaft (62).

7. The fuselage according to claim 1, characterized in that: The diameter of the wire positioning hole (41) on the inner lining plate (4) is larger than the outer diameter of the wire protection tube (5).

Images