Inner supporting device of small-opening thin-wall shell

Abstract

The utility model relates to an inner supporting device of a small-opening thin-wall shell, and belongs to the technical field of production of missile cabin shell assemblies. The inner supporting device of the small-opening thin-wall shell comprises a base, a center shaft and a supporting assembly. The central shaft is arranged in the middle of the base; a plurality of supporting assemblies are uniformly mounted at the upper end of the central shaft; the supporting assembly comprises an upper swing arm, a lower swing arm, a supporting plate, a sliding block and a supporting arm. An upper swing arm is hinged to the upper end of the central shaft; two groups of supporting plates are symmetrically hinged to one end of the upper swing arm; a sliding block is slidably mounted on the lower surface of the upper swing arm through a guide rail; two sets of supporting arms are symmetrically hinged to one end of the sliding block. The inner supporting device of the small-opening thin-wall shell can be inserted into the missile shell in the folded state, can support the specific position of the missile shell in the unfolded state, and is particularly suitable for the requirement for bonding use of a missile shell assembly.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of inner support devices of small opening thin-walled shell, belong to the production technical field of missile cabin section shell assembly. BACKGROUND

[0002] Missile shell assembly is generally composed of load-bearing shell and outer heat shield, and the heat shield is usually connected with the load-bearing shell in the form of bonding. Due to the lightweight requirement of the missile, the load-bearing shell of the missile cabin section usually adopts a thin-walled structure. The thin-walled load-bearing shell can withstand the axial thrust during flight, but during the bonding process of certain specific parts and the heat shield, the outer wall of the shell will be subjected to normal extrusion force from the bonding adhesive layer, causing the shell surface to be prone to buckling instability. Once the shell surface buckles and loses stability, the bonding adhesive layer will solidify, resulting in product scrap.

[0003] During the bonding process of the heat shield, the inner wall of the shell needs to be supported to prevent the shell from losing stability due to normal pressure. The existing support method is to manually support the inner specific position during the bonding process to complete the bonding of the missile shell assembly. Although this method meets the use requirements to some extent, it has the problem of low work efficiency. Moreover, due to the large size of the traditional support tooling, it is difficult to send it into the shell interior from the opening position, so it is not suitable for shells with small openings. Therefore, it is necessary to develop an inner support device to solve the above problems existing in the current bonding process of missile shell assemblies. SUMMARY

[0004] The utility model aims to provide an inner support device for small opening thin-walled shell with compact structure and ingenious design to solve the problem of low work efficiency in the current bonding process of missile shell assemblies.

[0005] The technical solution of the utility model is as follows:

[0006] An inner support device for small opening thin-walled shell, comprising a base, a central shaft and a support assembly, characterized in that: the central shaft is installed in the middle of the base; a plurality of support assemblies are uniformly installed on the upper end of the central shaft; the support assembly comprises an upper swing arm, a lower swing arm, a support plate, a sliding block and a support arm; the upper end of the central shaft is hingedly connected with the upper swing arm; two sets of support plates are symmetrically hingedly connected at one end of the upper swing arm; a sliding block is slidably installed on the lower surface of the upper swing arm through a guide rail; two sets of support arms are symmetrically hingedly connected at one end of the sliding block; one end of the support arm is hingedly connected with the corresponding support plate; the surface of the central shaft below the upper swing arm is hingedly connected with the lower swing arm; and one end of the lower swing arm is hingedly connected with the sliding block.

[0007] One side of the sliding block is threadedly connected with a locking screw; the locking screw is intermittently connected with the guide rail.

[0008] The flange connecting holes are uniformly arranged on the base.

[0009] The support plate is in an arc structure, which comprises a shaping base plate, a flexible panel and an adjuster; one end of the shaping base plate is provided with a hinge hole A; the middle part of the shaping base plate is provided with a hinge hole B; one side of the shaping base plate is provided with the flexible panel; the flexible panel is connected with the shaping base plate through the plurality of adjusters; the shaping base plate is hingedly connected with the end of the upper swing arm through the hinge hole A and is hingedly connected with the end of the support arm through the hinge hole B.

[0010] The adjuster comprises a connecting sleeve, an adjusting screw and a limiting ring; the adjusting screw is movably arranged on the shaping base plate; the limiting ring is arranged on the adjusting screw; the limiting ring is arranged in a limiting hole on the shaping base plate; the limiting ring is arranged on one side of the shaping base plate; the connecting sleeve is embedded in the flexible panel on one side of the adjusting screw; the adjusting screw is threadedly connected with the connecting sleeve.

[0011] The utility model discloses the advantages are:

[0012] The inner support device of the small-opening thin-wall shell is compact in structure and ingenious in design, can be inserted into the interior of the missile shell in the folding state, can support the specific position of the missile shell in the unfolded state, and thus can avoid the problem of low work efficiency caused by artificial support, and is particularly suitable for the needs of the adhesion of the missile shell assembly. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of the utility model;

[0014] Figure 2 It is the isometric structural schematic diagram of the utility model;

[0015] Figure 3 It is Figure 1 It is the enlarged structural schematic diagram of the position A;

[0016] Figure 4 It is Figure 2 It is the enlarged structural schematic diagram of the position B;

[0017] Figure 5 It is the overhead structural schematic diagram of the utility model;

[0018] Figure 6 It is the structural schematic diagram of the support assembly when folding;

[0019] Figure 7 It is the structural schematic diagram of the support assembly when folding;

[0020] Figure 8 It is the structural schematic diagram of the support plate of the utility model;

[0021] Figure 9 For Figure 8 Enlarged structure diagram at C.

[0022] In the figure: 1, base; 2, central shaft; 3, support assembly; 4, upper swing arm; 5, support plate; 6, guide rail; 7, sliding block; 8, support arm; 9, lower swing arm; 10, flange connection hole; 11, shaping base plate; 12, hinge hole A; 13, hinge hole B; 14, flexible panel; 15, adjuster; 16, adjusting screw; 17, limiting ring edge; 18, limiting hole; 19, limiting ring; 20, adapter sleeve. DETAILED DESCRIPTION

[0023] The inner support device of the small opening thin wall shell comprises a base 1, a central shaft 2 and a support assembly 3 (see the attached Figure 1 and 2 ).

[0024] The central shaft 2 is arranged in the middle of the base 1 (see the attached Figure 1 and 2 ); The flange connection holes 10 are uniformly arranged on the base 1 (see the attached Figure 1 and 2 ).

[0025] A plurality of support assemblies 3 are uniformly arranged on the upper end of the central shaft 2 (see the attached Figure 1 , 2 and 5). The support assembly 3 comprises an upper swing arm 4, a lower swing arm 9, a support plate 5, a sliding block 7 and a support arm 8 (see the attached Figure 3 and 4 ).

[0026] The upper swing arm 4 is hingedly connected to the upper end of the central shaft 2; Two groups of support plates 5 are symmetrically hingedly connected to one end of the upper swing arm 4; The sliding block 7 is slidingly arranged on the upper surface of the upper swing arm 4 through the guide rail 6; Two groups of support arms 8 are symmetrically hingedly connected to one end of the sliding block 7; One end of the support arm 8 is hingedly connected to the corresponding support plate 5; The lower swing arm 9 is hingedly connected to the surface of the central shaft 2 below the upper swing arm 4; One end of the lower swing arm 9 is hingedly connected to the sliding block 7 (see the attached Figure 3 , 4 , 6 and 7).

[0027] The purpose of arranging the support assembly 3 in this way is to make the lower swing arm 9 pull the sliding block 7 downward relative to the upper swing arm 4 when the upper swing arm 4 is rotated upward to the vertical state; The sliding block 7 will drive the two groups of support plates 5 to fold during the downward movement (see the attached Figure 6 and 7), so as to achieve the purpose of folding the support assembly 3. When the upper swing arm 4 is turned to the horizontal state, the lower swing arm 9 will push the sliding block 7 to move relative to the upper swing arm 4 towards the support plate 5, and in this process, the sliding block 7 will drive the two sets of support plates 5 to unfold through the two sets of support arms 8, so as to achieve the purpose of unfolding the support assembly 3.

[0028] One side of the sliding block 7 is threadedly connected with a locking screw (not shown in the drawings); the locking screw is intermittently connected with the guide rail 6. The purpose of setting the locking screw is that when the locking screw is tightened, the sliding block 7 and the guide rail 6 can be kept relatively fixed, so as to achieve the purpose of locking the support plate 5.

[0029] The support plate 5 is in an arc-shaped structure, which comprises a shaped base plate 11, a flexible panel 14 and an adjuster 15; one end of the shaped base plate 11 is provided with a hinged hole A12; the middle part of the shaped base plate 11 is provided with a hinged hole B13; one side of the shaped base plate 11 is provided with the flexible panel 14; the flexible panel 14 is connected with the shaped base plate 11 through a plurality of adjusters 15 (see the drawings of the specification Figure 8 ); the shaped base plate 11 is hingedly connected with the end of the upper swing arm 4 through the hinged hole A12, and is hingedly connected with the end of the support arm 8 through the hinged hole B13.

[0030] The adjuster 15 comprises a connecting sleeve 20, an adjusting screw 16 and a limiting ring 19 (see the drawings of the specification Figure 9 ); the adjusting screw 16 is movably mounted on the shaped base plate 11; the adjusting screw 16 is provided with a limiting ring edge 17; the limiting ring edge 17 is mounted in a limiting hole 18 on the shaped base plate 11; the limiting ring 19 is mounted on one side of the shaped base plate 11 (see the drawings of the specification Figure 9 ); the purpose of thus setting the adjusting screw 16 is that the adjusting screw 16 can be movably connected with the shaped base plate 11, and can also avoid disconnection under the cooperation of the limiting ring edge 17 and the limiting ring 19.

[0031] The flexible panel 14 on one side of the adjusting screw 16 is embedded with the connecting sleeve 20; the adjusting screw 16 is threadedly connected with the connecting sleeve 20.

[0032] The purpose of thus setting the support plate 5 is that when the support plate 5 is in contact with the inner wall of the missile shell assembly when the support assembly 3 is unfolded, and when the local part of the support plate 5 is not in close contact with the inner wall of the missile shell assembly, the corresponding adjusting screw 16 can be twisted to relatively unfold the connecting sleeve 20 and the adjusting screw 16, so as to achieve the purpose of extruding the flexible panel 14 to make it in close contact with the inner wall of the missile shell assembly.

[0033] The inner supporting device of the small opening thin wall shell, in working, firstly loosens the locking screw, then presents the folding state by manually or pulling the upper swing arm 4 of the supporting assembly 3 by a rope. Then the supporting assembly 3 in the folding state is inserted into the inner part of the missile shell assembly from the bottom end. Then the supporting assembly 3 is aligned with the position needed to be supported in the missile shell. Then the upper swing arm 4 is slowly loosened to unfold the supporting assembly 3 (see the attached drawing of the specification Figure 3 and 4 ), the supporting plate 5 is in contact with the inner wall of the missile shell. Then the locking screw is tightened to fix the supporting plate 5.

[0034] After the above work is completed, for the position where the partial supporting plate 5 is not closely contacted with the inner wall of the missile shell assembly, the corresponding adjusting screw 16 is screwed to unfold the connecting sleeve 20 relative to the adjusting screw 16, so as to extrude the flexible panel 14 to closely contact with the inner wall of the missile shell assembly.

[0035] Thus the inner supporting device can complete the supporting work, when the missile shell assembly completes the bonding work of the heat protection cover, the supporting assembly 3 is folded and then the supporting device is removed.

[0036] The inner supporting device of the small opening thin wall shell, compact structure, ingenious design, which can be inserted into the inner part of the missile shell in the folding state, which can support the specific position of the missile shell in the unfolded state, so as to avoid the problem of low work efficiency caused by artificial support, especially suitable for the needs of the bonding of the missile shell assembly.

Claims

1. An inner support device for a small opening thin wall shell, comprising a base (1), a center shaft (2) and a support assembly (3); characterized in that: The base (1) is provided with a central shaft (2) in the middle; a plurality of support assemblies (3) are uniformly arranged on the upper end of the central shaft (2); the support assembly (3) comprises an upper swing arm (4), a lower swing arm (9), a support plate (5), a sliding block (7) and a support arm (8); the upper end of the central shaft (2) is hingedly connected with the upper swing arm (4); the upper swing arm (4) is symmetrically hingedly connected with two groups of support plates (5) at one end; the sliding block (7) is slidably arranged on the lower surface of the upper swing arm (4) through a guide rail (6); the sliding block (7) is symmetrically hingedly connected with two groups of support arms (8) at one end; one end of the support arm (8) is hingedly connected with the corresponding support plate (5); the surface of the central shaft (2) below the upper swing arm (4) is hingedly connected with the lower swing arm (9); one end of the lower swing arm (9) is hingedly connected with the sliding block (7).

2. A support device for a small opening thin wall housing according to claim 1, characterized in that: One side of the sliding block (7) is threadedly connected with a locking screw; the locking screw is intermittently connected with the guide rail (6).

3. A support device for small opening thin wall enclosures according to claim 1, wherein: The base (1) is uniformly provided with a flange connecting hole (10).

4. The inner support device for a small opening thin wall housing according to claim 1, wherein: The support plate (5) is in an arc-shaped structure, which comprises a shaped bottom plate (11), a flexible panel (14) and an adjuster (15); one end of the shaped bottom plate (11) is provided with a hinge hole A (12); the middle of the shaped bottom plate (11) is provided with a hinge hole B (13); one side of the shaped bottom plate (11) is provided with the flexible panel (14); the flexible panel (14) is connected with the shaped bottom plate (11) through a plurality of adjusters (15); the shaped bottom plate (11) is hingedly connected with the end of the upper swing arm (4) through the hinge hole A (12) and is hingedly connected with the end of the support arm (8) through the hinge hole B (13).

5. A small opening thin wall housing inner support device according to claim 4, characterized in that: The adjuster (15) comprises a connecting sleeve (20), an adjusting screw (16) and a limiting ring (19); the adjusting screw (16) is movably arranged on the shaped bottom plate (11); the limiting ring (17) is arranged on the adjusting screw (16); the limiting ring (17) is arranged in the limiting hole (18) on the shaped bottom plate (11); the limiting ring (19) is arranged on one side of the shaped bottom plate (11) of the limiting hole (18); the connecting sleeve (20) is embedded in the flexible panel (14) on one side of the adjusting screw (16); the adjusting screw (16) is threadedly connected with the connecting sleeve (20).

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