A tail end inner support positioning mechanism

Abstract

The utility model discloses a tail inner support spare positioning mechanism, including tail lower mould piece, the top surface middle part of tail lower mould piece is shaped with inner chamber, and tail lower casing spare is nested in the inner chamber, the front of inner wall surface of tail lower casing spare is placed with the front web, and the rear of front web is equipped with the rear web, and the bottom surface of front web and rear web is pressed on the inner wall surface of tail lower casing spare, and the lower part of front web positioning clamp is fixed on the upper portion's connecting block body of front web, and the bottom of front web positioning clamp is in the upper of tail lower mould piece and is fixed at the upper wall surface department of tail lower mould piece, it can be positioned and placed accurately with the component such as front web, rear web etc in tail lower casing spare, guarantees the accurate of bonding fixed position, guarantees the machining accuracy, and the convenient dismounting and installation of each positioning frock, and the convenient combination positioning.

Description

Technical Field

[0001] This utility model relates to the field of aircraft shell manufacturing equipment technology, and more specifically to a positioning mechanism for an internal support component in the tail section. Background Technology

[0002] With the rapid development of aviation technology, light aircraft, with their excellent maneuverability and flexible deployment capabilities, are playing an increasingly important role in civil transportation, military reconnaissance, and emergency rescue. As a key component of the aircraft's aerodynamic layout and load-bearing system, the installation accuracy of its internal support components directly affects the aircraft's overall structural strength, flight stability, and long-term service reliability. In the manufacturing and maintenance of light aircraft, the positioning and assembly of the tail support components has long faced numerous technical challenges: on the one hand, due to the limited internal space and complex structure of the tail section, traditional manual adjustment or simple tooling positioning methods are insufficient to meet the stringent assembly accuracy requirements of modern aviation manufacturing; on the other hand, existing positioning processes suffer from cumbersome operations, low efficiency, and poor consistency, easily leading to deviations in the installation position of the support components, thereby affecting the aircraft's structural integrity and service life.

[0003] The current industry-standard methods for locating internal tail support components suffer from the following technical bottlenecks: First, the traditional operation mode, relying on manual measurement and trial assembly, is not only labor-intensive and time-consuming, but also struggles to guarantee consistent assembly accuracy. Second, existing general-purpose fixture systems lack sufficient adaptability and cannot effectively address the changing positioning requirements arising from structural differences between different aircraft models. Furthermore, traditional positioning tooling is highly specialized and lacks versatility, often requiring redesign or significant adjustments to the tooling system during aircraft model conversions. This not only significantly increases production costs but also severely restricts the flexibility of the production line. To overcome these technical bottlenecks, a new type of internal tail support component positioning mechanism with high precision, adjustability, and strong adaptability is needed to improve the quality and efficiency of the assembly process while meeting the urgent demand for flexible production in modern aerospace manufacturing. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a tail support positioning mechanism that can accurately position and place components such as the front and rear web plates in the lower tail shell, ensuring precise bonding and fixing positions and ensuring processing accuracy. The various positioning fixtures are easy to disassemble and install, and convenient for combination and positioning.

[0005] The solution of this utility model to the aforementioned technical problem is:

[0006] A tail section internal support positioning mechanism includes a tail section lower mold block, wherein an inner cavity is formed in the middle of the top surface of the tail section lower mold block, and the tail section lower housing is nested in the inner cavity;

[0007] A front web plate is placed at the front of the inner wall of the lower tail housing component, and a rear web plate is provided behind the front web plate. The bottom surfaces of the front web plate and the rear web plate press against the inner wall of the lower tail housing component. The lower part of the front web plate positioning fixture is fixed on the connecting block at the upper part of the front web plate. The bottom of the front web plate positioning fixture is located above the lower tail mold block and fixed at the upper wall of the lower tail mold block.

[0008] A transverse beam extending forward and backward is fixed on the top surface below the tail lower mold block. A front web plate lower clamp and a rear web plate lower clamp are fixed on the transverse beam. The rear web plate lower clamp includes a support rod extending upward and downward. An upper pressure plate is fixed to the upper end of the support rod. A transverse support rib is fixed to the upper wall of the upper pressure plate by bolts. The front and rear ends of the transverse support rib press against two opposite inner side walls of the lower part of the front web plate and the rear web plate. The lower part of the support rod is fixed to the transverse beam.

[0009] The lower clamp of the front web includes a front positioning block that extends vertically and is fixedly connected to the top surface of the transverse beam by bolts. A vertical block is fixed on the rear side wall of the front positioning block. The rear side wall of the vertical block presses against the front side wall of the lower part of the front web. A horizontal limiting piece is fixed in the middle of the rear side wall of the vertical block. The horizontal limiting piece presses against the top surface of the lower part of the front web.

[0010] The lower part of the support rod is inserted into the slot formed between two bent blocks fixed on the top surface of the transverse beam. The front and rear side walls of the lower part of the support rod are in close contact with the front and rear inner side walls of the slot. A quick clamp is fixed on the top surface of the transverse beam on one side of one of the bent blocks, and the pressure block of the quick clamp presses against the top surface of the lower part of the support rod.

[0011] A first connecting rod extending upward is fixed on the front top surface of the transverse beam. The upper part of the first connecting rod is fixedly connected to the upper part of the top surface of the tail lower mold block. An annular rib is fixedly connected to the middle of the front side wall of the first connecting rod by bolts. The annular rib is inserted into the front part of the tail lower housing part, and the bottom surface of the annular rib presses against the inner wall surface of the front part of the tail lower housing part.

[0012] A positioning rod extending backward is fixed on the upper rear side wall of the first connecting rod. A clamping block is fixed at the rear of the positioning rod. A second transverse support rib is pressed against the lower wall of the clamping block. The front end of the second transverse support rib is pressed against the inner side wall of the upper side plate of the tail lower housing part, and the rear end of the second transverse support rib is pressed against the front side wall of the middle part of the front web plate.

[0013] The clamping block and the second transverse support rib are clamped and fixed by C-type pliers.

[0014] The outstanding effect of this utility model is:

[0015] It can accurately position and place components such as the front and rear web plates in the lower tail shell, ensuring precise bonding and fixing positions and ensuring machining accuracy. Its various positioning fixtures are easy to disassemble and install, and convenient for combination and positioning. Attached Figure Description

[0016] Figure 1 This is a partial top view of the present invention;

[0017] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0018] Figure 3 This is a partial side view of the front web positioning fixture of this utility model;

[0019] Figure 4 This is a simplified schematic diagram of the C-type clamping pliers of this utility model during clamping;

[0020] Figure 5 This is a partial structural diagram of the clamping part of the front web of this utility model. Detailed Implementation

[0021] For example, see below. Figures 1 to 5 As shown, a tail support positioning mechanism includes a tail lower mold block 10, an inner cavity is formed in the middle of the top surface of the tail lower mold block 10, and a tail lower housing 100 is nested in the inner cavity.

[0022] A front web plate 200 is placed at the front of the inner wall of the tail lower housing 100, and a rear web plate 300 is provided behind the front web plate 200. The bottom surfaces of the front web plate 200 and the rear web plate 300 press against the inner wall of the tail lower housing 100. The lower part of the front web plate positioning fixture 20 is fixed on the connecting block 201 at the upper part of the front web plate 200. The bottom of the front web plate positioning fixture 20 is above the tail lower mold block 10 and fixed at the upper wall of the tail lower mold block 10.

[0023] The front web plate positioning fixture 20 includes two side fixing plates, front and rear. A connecting frame 21 is fixed between the upper parts of the two side fixing plates. The lower part of the connecting frame 21 is located below the two side fixing plates and fixed to the upper wall of the tail lower mold block 10. The two side fixing plates are located between the connecting blocks 201 at the upper part of the front web plate 200 and are fixedly connected by bolts.

[0024] It uses the front web plate positioning clamp 20 to fix and position the front web plate 200 at the top;

[0025] A transverse beam 30 extending forward and backward is fixed on the top surface below the tail lower mold block 10. A front web plate lower clamp 40 and a rear web plate lower clamp 50 are fixed on the transverse beam 30. The rear web plate lower clamp 50 includes a support rod 51 extending upward and downward. An upper pressure plate 52 is fixed to the upper end of the support rod 51. A transverse support rib 53 is fixed to the upper wall of the upper pressure plate 52 by bolts. The front and rear ends of the transverse support rib 53 press against two opposite inner side walls of the lower part of the front web plate 200 and the rear web plate 300. The lower part of the support rod 51 is fixed to the transverse beam 30.

[0026] The rear web plate clamp 50 is used to position the distance between the transverse support rib 53 and the front web plate 200 and the rear web plate 300, which facilitates subsequent adhesive bonding and fixation.

[0027] Furthermore, the lower clamp 40 of the front web plate includes a front positioning block 41 extending vertically and fixedly connected to the top surface of the transverse beam 30 by bolts. A vertical block 42 is fixed on the rear side wall of the front positioning block 41. The rear side wall of the vertical block 42 presses against the front side wall of the lower part of the front web plate 200. A horizontal limiting piece 43 is fixed in the middle of the rear side wall of the vertical block 42. The horizontal limiting piece 43 presses against the top surface of the lower part of the front web plate 200.

[0028] The rear sidewall of the vertical block 42 and the horizontal limiting piece 43 limit and fix the front and rear positions and top surface of the lower part of the front web plate 200 by the lower clamp 40 of the front web plate. There is also a gap between the lower end of the front web plate 200 and the inner sidewall of the lower wall plate of the tail lower housing 100, which facilitates subsequent adhesive bonding and fixing. Moreover, there is a certain space adjustment when the adhesive expands and cures, so that the front web plate 200 is not easy to shift and ensures the bonding strength.

[0029] During installation, the upper part of the rear web 300 is inserted into the extension formed on the lower rear wall of the connecting block 201 of the front web 200 to achieve the connection between the rear web 300 and the connecting block 201 of the front web 200. The connection between the two is fixed with adhesive.

[0030] Furthermore, the lower part of the support rod 51 is inserted into a slot formed between two bent blocks 31 fixed on the top surface of the transverse beam 30. The front and rear side walls of the lower part of the support rod 51 are tightly against the front and rear inner side walls of the slot. A quick clamp 32 (a commercially available product, not described in detail here) is fixed on the top surface of the transverse beam on one side of one of the bent blocks 31. The pressure block of the quick clamp 32 presses against the top surface of the lower part of the support rod 51. The support rod 51 can be fixed by pressing down with the quick clamp 32, and it can also be quickly opened for disassembly, which is very convenient.

[0031] Furthermore, a first connecting rod 33 extending upwards is fixed to the top front surface of the transverse beam 30. The upper part of the first connecting rod 33 is fixedly connected to the upper part of the top surface of the tail lower mold block 10. An annular rib block 400 is fixedly connected to the middle of the front side wall of the first connecting rod 33 by bolts. The annular rib block 400 is inserted into the front of the tail lower housing part 100. There is a gap 1 between its upper and lower ends and the upper and lower side walls of the front of the tail lower housing part 100 for applying adhesive. The bottom surface of the annular rib block 400 presses against the inner wall surface of the front of the tail lower housing part 100. This positions the annular rib block 400, giving it the gap 1. The gap 1 allows for some space adjustment when the adhesive expands and cures after the annular rib block 400 is bonded and fixed to the upper and lower walls of the tail lower housing part 100, making it less likely for the annular rib block 400 to shift and ensuring a strong bond.

[0032] Furthermore, a rearwardly extending positioning rod 34 is fixed on the upper rear side wall of the first connecting rod 33, and a clamping block 35 is fixed at the rear of the positioning rod 34. A second transverse support rib 36 is pressed against the lower wall surface of the clamping block 35. The front end of the second transverse support rib 36 is pressed against the inner side wall of the upper side plate of the tail lower housing 100, and the rear end of the second transverse support rib 36 is pressed against the front side wall of the middle part of the front web plate 200.

[0033] The clamping block 35 and the second transverse support rib 36 are clamped and fixed by C-type pliers 37 (which can be purchased directly on the market and will not be described in detail).

[0034] This structure ensures that the second transverse support rib 36 is firmly positioned and fixed, making it difficult to move.

[0035] Furthermore, the upper part of the rear side of the rear web plate 300 is formed with an extension, which is fixed to the upper part of the rear web plate positioning member 60. The rear web plate positioning member 60 is fixed to the rear side wall of the tail lower mold block 10. A connecting block extending forward is fixed to the lower front side wall of the rear web plate positioning member 60. The connecting block is fixed to the lower rear wall surface of the rear web plate 300.

[0036] A top adjustment plate 61 is fixed to the top surface of the lower part of the rear web plate positioning component 60. An adjustment screw 38 is fixed to the upper wall of the rear part of the transverse beam 30. The adjustment screw 38 is inserted into the middle through hole of the top adjustment plate 61. The upper end of the adjustment screw 38 extends out of the top adjustment plate 61 and is screwed with a locking nut 39. The lower wall of the locking nut 39 presses against the upper wall of the top adjustment plate 61. Multiple washers 2 are inserted into the adjustment screw 38. All washers 2 press against each other and are clamped between the top adjustment plate 61 and the upper wall of the transverse beam 30. There is an adhesive gap 3 between the lower end of the rear web plate 300 and the inner wall of the lower wall plate of the tail lower housing component 100, which facilitates subsequent adhesive application and bonding. Moreover, there is a certain space for adjustment when the adhesive expands and cures, so that the rear web plate 300 is not easy to shift and ensures the bonding strength.

[0037] The connection between the rear abdominal plate positioning component 60 and the rear side wall of the tail lower mold block 10 is fixed by bolts. The connecting through hole into which the bolts are inserted is a waist-shaped through hole. This allows the rear abdominal plate positioning component 60 to be finely adjusted up and down by inserting different numbers of washers 2 on the adjusting screw 38. Then, tighten the locking nut 39 to adjust the distance of the adhesive gap 3 between the lower end of the rear abdominal plate 300 and the inner wall of the lower wall panel of the tail lower housing component 100. After adjustment, tighten the bolts connecting the rear abdominal plate positioning component 60 and the rear side wall of the tail lower mold block 10.

[0038] In this embodiment, the various fixtures and positioning components described above can be used to accurately position and place components such as the front web plate 200 and the rear web plate 300 in the tail lower housing 100, ensuring accurate bonding and fixing positions and ensuring processing precision. The various positioning fixtures are easy to disassemble and install.

[0039] 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 and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A tail section internal support positioning mechanism, comprising a tail section lower mold block (10), characterized in that: The tail lower mold block (10) has an inner cavity formed in the middle of its top surface, and the tail lower shell part (100) is nested in the inner cavity; A front web plate (200) is placed on the front part of the inner wall of the tail lower housing (100), and a rear web plate (300) is provided behind the front web plate (200). The bottom surfaces of the front web plate (200) and the rear web plate (300) are pressed against the inner wall of the tail lower housing (100). The lower part of the front web plate positioning fixture (20) is fixed on the connecting block (201) on the upper part of the front web plate (200). The bottom of the front web plate positioning fixture (20) is located above the tail lower mold block (10) and fixed on the upper wall of the tail lower mold block (10). A transverse beam (30) extending forward and backward is fixed on the top surface below the tail lower mold block (10). A front web plate lower clamp (40) and a rear web plate lower clamp (50) are fixed on the transverse beam (30). The rear web plate lower clamp (50) includes a support rod (51) extending upward and downward. An upper pressure plate (52) is fixed at the upper end of the support rod (51). A transverse support rib (53) is fixed on the upper wall of the upper pressure plate (52) by bolts. The front and rear ends of the transverse support rib (53) press against the two opposite inner side walls of the lower part of the front web plate (200) and the rear web plate (300). The lower part of the support rod (51) is fixed on the transverse beam (30). The lower clamp (40) of the front web includes a front positioning block (41) extending vertically and fixedly connected to the top surface of the transverse beam (30) by bolts. A vertical block (42) is fixed on the rear side wall of the front positioning block (41). The rear side wall of the vertical block (42) presses against the front side wall of the lower part of the front web (200). A horizontal limiting piece (43) is fixed in the middle of the rear side wall of the vertical block (42). The horizontal limiting piece (43) presses against the top surface of the lower part of the front web (200).

2. The tail section internal support positioning mechanism according to claim 1, characterized in that: The lower part of the support rod (51) is inserted into the slot formed between two bent blocks (31) fixed on the top surface of the transverse beam (30). The front and rear side walls of the lower part of the support rod (51) are close to the front and rear inner side walls of the slot. A quick clamp (32) is fixed on the top surface of the transverse beam () on one side of one of the bent blocks (31). The pressure block of the quick clamp (32) presses against the top surface of the lower part of the support rod (51).

3. The tail section internal support positioning mechanism according to claim 1, characterized in that: A first connecting rod (33) extending upward is fixed on the front top surface of the transverse beam (30). The upper part of the first connecting rod (33) is fixedly connected to the upper part of the top surface of the tail lower mold block (10). A ring rib (400) is fixedly connected to the middle of the front side wall of the first connecting rod (33) by bolts. The ring rib (400) is inserted into the front part of the tail lower housing part (100). Its upper and lower ends are tightly fitted with the upper and lower side walls of the front part of the tail lower housing part (100) and there is a gap (1) for applying glue. The bottom surface of the ring rib (400) presses against the inner wall surface of the front part of the tail lower housing part (100).

4. The tail section internal support positioning mechanism according to claim 3, characterized in that: A positioning rod (34) extending backward is fixed on the upper rear side wall of the first connecting rod (33). A clamping block (35) is fixed at the rear of the positioning rod (34). A second transverse support rib (36) is pressed against the lower wall of the clamping block (35). The front end of the second transverse support rib (36) is pressed against the inner side wall of the upper side plate of the tail lower housing part (100), and the rear end of the second transverse support rib (36) is pressed against the front side wall of the middle part of the front web plate (200).

5. The tail section internal support positioning mechanism according to claim 4, characterized in that: The clamping block (35) and the second transverse support rib (36) are clamped and fixed by C-type pliers (37).

6. The tail section internal support positioning mechanism according to claim 1, characterized in that: An extension is formed on the upper part of the rear side of the rear web plate (300). The extension is fixed on the upper part of the rear web plate positioning member (60). The rear web plate positioning member (60) is fixed on the rear side wall of the tail lower mold block (10). A connecting block extending forward is fixed on the lower front side wall of the rear web plate positioning member (60). The connecting block is fixed on the lower rear wall surface of the rear web plate (300).

7. The tail section internal support positioning mechanism according to claim 6, characterized in that: A top adjustment plate (61) is fixed to the top surface of the lower part of the rear web positioning component (60), and an adjustment screw (38) is fixed to the upper wall of the rear part of the transverse beam (30). The adjustment screw (38) is inserted into the middle through hole of the top adjustment plate (61). The upper end of the adjustment screw (38) extends out of the top adjustment plate (61) and is screwed with a locking nut (39). The lower wall of the locking nut (39) presses against the upper wall of the top adjustment plate (61). Multiple washers (2) are inserted into the adjustment screw (38). All washers (2) press against each other and are clamped between the top adjustment plate (61) and the upper wall of the transverse beam (30). There is an adhesive gap (3) between the lower end of the rear web (300) and the inner wall of the lower wall of the tail lower housing component (100).

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