Local external pressure test device for solid rocket engine and connecting cabin

Abstract

The utility model discloses a local external pressure test device and method for a solid rocket engine and a connecting cabin, the device comprises the solid rocket engine, the connecting cabin, a tool, an adapter plate, an arc-shaped frame, a cross beam assembly, a cross beam, a bolt, a wrapping tape, an actuator assembly and a crown block, the solid rocket engine and the connecting cabin are fixedly connected through the bolt, and the solid rocket engine and the connecting cabin are placed on the arc-shaped frame; the arc-shaped frame is fixed on the cross beam assembly through bolts; one end of the solid rocket engine is fixed to the arc-shaped frame through the wrapping tape, and the solid rocket engine is prevented from toppling over in the test process. The tool is fixed to a solid rocket engine and a connecting cabin through bolts. The adapter plate is fixed in the middle of the beam; one ends of the two actuator assemblies are fixed to the two sides of the beam respectively, and the other ends of the two actuator assemblies are fixed to the beam assembly. According to the testing device, the overall deformation and stress of the solid rocket engine can be reduced, the damage to a test piece in a test can be avoided, and dangerous factors caused by high-altitude operation of operators can also be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of solid rocket engine tests, and particularly relates to a local external pressure test device for a solid rocket engine and a connecting cabin. Background Art

[0002] The tooling has a supporting effect on the solid rocket engine and the connecting cabin. Under different overload conditions, large loads are generated locally on the solid rocket engine and the connecting cabin. In order to obtain whether the structure meets the design requirements, a test method needs to be designed to meet the requirements of local external pressure tests.

[0003] The traditional test method adopts vertical installation, which causes large deformation and stress on the connecting parts of the skirt of the solid rocket engine, and may cause damage and destruction of the structure; when conducting local external pressure tests on the solid rocket engine, when using vertical installation, the installation height exceeds 3m, and the operators need to work at heights, increasing the danger of operation. Summary of the Invention

[0004] To solve the above technical problems, the utility model provides a local external pressure test device and method for a solid rocket engine and a connecting cabin, so as to solve problems such as large deformation and stress generated on the connecting parts of the engine skirt by vertical installation, and risk factors caused by operators working at heights.

[0005] To solve the above technical problems, one of the purposes of the utility model is to provide a local external pressure test device for a solid rocket engine and a connecting cabin section. The device includes a solid rocket engine 1, a connecting cabin 2, a tooling 3, an adapter plate 4, an arc-shaped frame 5, a crossbeam assembly 6, a crossbeam 7, bolts 8, a strap 9, an actuator assembly 10 and a crane 11.

[0006] The solid rocket engine 1 and the connecting cabin 2 are fixedly connected by bolts 8 and placed on the arc-shaped frame 5.

[0007] The arc-shaped frame 5 is fixed on the crossbeam assembly 6 by bolts 8.

[0008] The strap 9 fixes one end of the solid rocket engine 1 on the arc-shaped frame 5 to prevent the solid rocket engine from tipping over during the test.

[0009] The tooling 3 is fixed at the solid rocket engine and the connecting cabin by bolts 8.

[0010] The adapter plate 4 is fixed in the middle of the crossbeam 7 by bolts 8.

[0011] One end of two groups of actuator assemblies 10 is respectively fixed on both sides of the crossbeam 7, and the other end is fixed on the crossbeam assembly 6.

[0012] In use, one end of each of the two sets of actuator assemblies is fixed to both sides of the crossbeam by bolts. The crossbeam is hoisted above the solid rocket motor by a crane. After adjusting the position, the boss of the adapter plate is assembled into the groove of the tooling, and the other end of the actuator assembly is fixed to the crossbeam assembly by bolts. Strain and displacement sensors are installed on the solid rocket motor and the connecting cabin.

[0013] Further, the crossbeam assembly 6 is composed of several crossbeams 7 and bolts 8, and has a grid structure.

[0014] Further, a certain number of through holes are provided on the end face of the crossbeam 7.

[0015] Further, one side of the tooling 3 is provided with a groove, and the other side is provided with one blind hole.

[0016] Further, the actuator assemblies 10 are fixedly connected to the crossbeams 7 and the crossbeam assembly 6 respectively through bolts 8.

[0017] Based on the same inventive concept, the present utility model also provides a method for local external pressure test of a solid rocket motor and a connecting cabin section. The specific steps are as follows:

[0018] S1: After the installation of the local external pressure test device for the solid rocket motor is completed, check whether all the connecting parts are firmly fixed;

[0019] S2: Apply oil pressure to the actuator assemblies, and the actuators contract for preloading;

[0020] S3: Through the preloading test, determine whether the connection of the test device is firm. After meeting the preloading requirements, conduct subsequent tests;

[0021] S4: During the formal test, pay attention to the deformation of the test device and the test piece, and whether there are abnormal noises.

[0022] Further, the preloading load in S2 is 30% of the formal load.

[0023] Further, if there are abnormalities in the preloading in S3, it is necessary to continue debugging until the test is satisfied before the test can be carried out.

[0024] One or more of the above technical solutions of the present utility model have at least one or more of the following technical effects: The test device provided by the present utility model can not only reduce the overall deformation and stress of the solid rocket motor, avoid the damage of the test piece during the test, but also avoid the risk factors caused by the high-altitude operation of the operator. Description of the Drawings

[0025] Figure 1 : Schematic diagram of the overall structure of the test device;

[0026] Figure 2 : Left view of the test device;

[0027] Figure 3 : Schematic diagram of the beam assembly structure;

[0028] Figure 4 : Schematic diagram of the T-shaped structure adapter plate structure;

[0029] Figure 5 : Schematic diagram of the groove structure;

[0030] Among them: 1 - solid rocket motor, 2 - connection cabin, 3 - tooling, 4 - adapter plate, 5 - arc-shaped frame, 6 - beam assembly, 7 - beam, 8 - bolt, 9 - strap, 10 - actuator assembly, 11 - overhead crane. Specific implementation

[0031] The utility model provides a local external pressure test device and method for a solid rocket motor and a connection cabin. Fix two arc-shaped frames on the beam assembly at a certain interval, place the solid rocket motor shell and the connection cabin on the arc-shaped frames and fix them. Lift the beam with an overhead crane, fix the adapter plate on the beam with bolts, then fix the tooling on the solid rocket motor and the connection cabin with bolts, fix the actuator assembly on the beam, move the overhead crane, place the adapter plate boss in the tooling groove. When the actuator assembly works, the application and measurement of the local external pressure load of the solid rocket motor and the connection cabin can be realized.

[0032] Next, in combination with the embodiments of the utility model and the drawings, the technical solutions in the embodiments of the utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the utility model.

[0033] Such as Figures 1-5As shown in the figure, the test device includes a solid rocket motor 1, a connecting cabin 2, a tooling 3, an adapter plate 4, an arc-shaped frame 5, a crossbeam assembly 6, crossbeams 7, bolts 8, a strap 9, an actuator assembly 10, and a crane 11. A number of crossbeams 7 are assembled into a "well" structure by bolts 8 to form the crossbeam assembly 6. The end face of the crossbeam 7 is provided with a certain number of through holes. The arc-shaped frame 5 is fixed to the crossbeam assembly 6 by bolts 8. The solid rocket motor 1 and the connecting cabin 2 are fixed to the arc-shaped frame by bolts 8 and the strap 9. One end of the actuator assembly 10 is fixed to the crossbeam 7 by bolts 8, and the other end is fixed to the crossbeam assembly 6 by bolts 8. The adapter plate 4 is fixed to the middle position of the crossbeam 7 by bolts 8. The adapter plate 4 is of a T-shaped structure and is provided with a plurality of through holes on one side. The material of the adapter plate 4 is high-strength steel. The tooling 3 is connected to the solid rocket motor 1 and the connecting cabin 2 by bolts 8. The tooling 3 is provided with a groove on one side and a blind hole on the other side. The boss of the adapter plate 4 is connected to the groove of the tooling 3. The skirt of the solid rocket motor and the connecting cabin are fixed by bolts 8.

[0034] During specific implementation, a number of crossbeams 7 are combined into a well-shaped structure, and the crossbeams 7 are fixed with bolts 8 to form the crossbeam assembly 6. Two arc-shaped frames 5 are spaced at a certain distance and fixed to the crossbeam assembly 6 with bolts 8. The solid rocket motor 1 and the connecting cabin 2 are fixed with bolts and placed on the arc-shaped frame 5. One end of the solid rocket motor 1 is fixed to the arc-shaped frame 5 with a strap 9 to prevent the solid rocket motor from tipping over during the test. The tooling 3 is installed at the solid rocket motor and the connecting cabin with bolts. The adapter plate 4 is fixed in the middle of the crossbeam with bolts. One end of two groups of actuator assemblies is respectively fixed on both sides of the crossbeam with bolts. The crossbeam is hoisted above the solid rocket motor with the crane 11, the position is adjusted, the boss of the adapter plate is assembled into the groove of the tooling, and the other end of the actuator assembly 10 is fixed to the crossbeam assembly with bolts.

[0035] When performing a local external pressure test on a solid rocket motor of the present utility model, a load is applied to the actuator assembly.

[0036] A method for local external pressure test of a solid rocket motor and a connecting cabin, the test steps:

[0037] a) Steps for assembling the test device

[0038] Combine several crossbeams 7 into a grid structure, and fix the crossbeams 7 with bolts 8 to form a crossbeam assembly 6. Space two arc-shaped frames 5 at a certain distance and fix them on the crossbeam assembly 6 with bolts 8. Fix the solid rocket motor 1 and the connection cabin 2 with bolts, place them on the arc-shaped frames 5, and fix one end of the solid rocket motor 1 on the arc-shaped frames 5 with straps 9 to prevent the solid rocket motor from tipping over during the test. Install the tooling 3 at the solid rocket motor and the connection cabin with bolts. Fix the adapter plate 4 in the middle of the crossbeam with bolts, fix one end of two groups of actuator assemblies on both sides of the crossbeam respectively with bolts, lift the crossbeam above the solid rocket motor with a crane 11, adjust the position, assemble the boss of the adapter plate into the groove of the tooling, and fix the other end of the actuator assembly 10 on the crossbeam assembly with bolts. Install strain and displacement sensors on the solid rocket motor and the connection cabin.

[0039] b) Test process

[0040] 1) After the installation of the local external pressure test device for the solid rocket motor is completed, check whether all the connecting parts are firmly fixed. 2) Provide oil pressure to the actuator assembly, and the actuator shrinks for preloading. The preloading load is 30% of the formal load. 3) Through the preloading test, determine whether the connection of the test device is firm. After meeting the preloading requirements, conduct subsequent tests; if there are abnormalities in the preloading, continue to debug until the test is satisfied before conducting the test. 4) During the formal test, pay attention to the deformation of the test device and the test piece, and whether there are abnormal noises, etc.

[0041] c) Test conclusion

[0042] After the test is completed, remove the load. 1) Observe whether there are large deformations, damages, etc. in the local areas of the solid rocket motor and the connection cabin. 2) Analyze whether the strain and displacement test data obtained from the test are abnormal. Judge whether the test is successful based on the above situations.

[0043] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A local external pressure test device for a solid rocket motor and a connecting cabin, characterized in that Including: Solid rocket motor (1), connecting cabin (2), tooling (3), adapter plate (4), arc-shaped frame (5), crossbeam assembly (6), crossbeam (7), bolt (8), strap (9), actuator assembly (10) and overhead crane (11). The solid rocket motor (1) and the connecting cabin (2) are fixedly connected by bolts (8) and placed on the arc-shaped frame (5). The arc-shaped frame (5) is fixed on the crossbeam assembly (6) by bolts (8). The strap (9) fixes one end of the solid rocket motor (1) on the arc-shaped frame (5) to prevent the solid rocket motor from tipping over during the test. The tooling (3) is fixed at the solid rocket motor and the connecting cabin by bolts (8). The adapter plate (4) is fixed in the middle of the crossbeam (7) by bolts (8). One end of two groups of actuator assemblies (10) is respectively fixed on both sides of the crossbeam (7), and the other end is fixed on the crossbeam assembly (6). During use, one end of two groups of actuator assemblies is respectively fixed on both sides of the crossbeam by bolts, the crossbeam is hoisted above the solid rocket motor by an overhead crane, the position is adjusted, the boss of the adapter plate is assembled into the groove of the tooling, the other end of the actuator assembly is fixed on the crossbeam assembly by bolts, and strain and displacement sensors are installed on the solid rocket motor and the connecting cabin.

2. The local external pressure test device for a solid rocket motor and a connecting cabin according to claim 1, characterized in that: The crossbeam assembly (6) is composed of several crossbeams (7) and bolts (8) and has a grid structure.

3. The local external pressure test device for a solid rocket motor and a connecting cabin according to claim 2, characterized in that: A certain number of through holes are provided on the end face of the crossbeam (7).

4. The local external pressure test device for a solid rocket motor and a connecting cabin according to claim 1, characterized in that: One side of the tooling (3) is provided with a groove and the other side is provided with one blind hole.

5. The local external pressure test device for the solid rocket motor and the connecting cabin according to claim 1, wherein: The actuator assemblies (10) are respectively fixedly connected to the crossbeam (7) and the crossbeam assembly (6) by bolts (8).

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