Quick assembling device and method for solid rocket engine end socket component

Abstract

The invention provides a quick assembling device and method for a solid rocket engine end socket component. The quick assembling device comprises a mounting frame, a fixing hoop and a driving assembly. The mounting frame comprises a mounting seat and two swing arms; the two swing arms are rotationally connected to the two opposite ends of the mounting base through rotating pin shafts correspondingly. The fixing hoop comprises two arc-shaped embracing rings, the two arc-shaped embracing rings are connected to the two swing arms respectively, and the opposite ends of the two embracing rings are detachably connected; the driving assembly comprises a driving piece and a pressing plate, and the driving piece is connected with the pressing plate; the driving piece is mounted on the mounting seat; in the working process, the fixing hoop holds an engine shell tightly, the pressing plate is driven to move in the radial direction of the shell, and the pressing plate presses an end socket part into the shell. The technical purpose that the solid rocket engine end socket component and the shell can be accurately and rapidly assembled is achieved. The general assembly of engine accessories with different sizes is met, and the adaptability is good. The device is simple in structure, convenient to operate, safe, reliable, high in assembly efficiency and low in machining and manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid rocket engine assembly, in particular to a kind of solid rocket engine head component quick assembly device and method. BACKGROUND

[0002] Solid rocket engine needs to be assembled with the head component and the engine shell during the general assembly process, and the engine head component needs to be embedded into the combustion chamber along the axial direction and then be fastened, so as to realize the accurate alignment and assembly of the engine shell and the head component, which must have the following functions: ensuring the accurate axial positioning of the head component and the shell, overcoming the small assembly gap and being able to apply appropriate pressure, realizing automatic assembly, and meeting the requirements of explosion-proof safety. However, due to the very small assembly gap of the front and rear openings of the engine, the coaxiality requirement is high, and there is a certain degree of internal pressure in the engine combustion chamber. Therefore, when the engine head component and the shell are assembled and pressed, the resistance is large, and the traditional horizontal assembly method has the problems of low assembly accuracy, low assembly efficiency, easy damage of the sealing ring, etc. for the assembly of products with radial sealing structure. At present, most of the small and medium-sized engines use horizontal assembly, and the assembly method of manually lifting the head component for alignment and force pressing is used, which is difficult to realize the installation and connection of the sealing element, and a guide structure needs to be designed, which occupies a large space and is inconvenient to maintain and disassemble. It is also difficult to assemble multiple parts at the same time. There are also cases of using mechanical devices such as nozzle assembly vehicles for assembly, but this method is mainly used for engines with large diameter, long length and heavy nozzle weight, and it is necessary to ensure the accurate axial positioning of the device and the engine, and the assembly efficiency is very low. SUMMARY

[0003] Therefore, the present application provides a kind of solid rocket engine head component quick assembly device and method, which solves the technical problem that the solid rocket engine head component (top cover+nozzle) can be accurately and quickly assembled with the shell.

[0004] In order to solve the above technical problems, the present application aims to provide a kind of solid rocket engine head component quick assembly device, which comprises: a mounting frame, the mounting frame comprises a mounting seat and two swing arms, and the two swing arms are respectively connected to the opposite ends of the mounting seat through rotating pins; a fixed clamp, the fixed clamp comprises two arc-shaped clamps, and the two arc-shaped clamps are respectively connected to the two swing arms, and the opposite ends of the two clamps are detachably connected; a driving assembly, the driving assembly comprises a driving member and a pressing plate, and the driving member is connected with the pressing plate; the driving member is installed on the mounting seat; When working, the fixed clamp tightly holds the engine shell, the driving pressing plate moves along the radial direction of the shell, and the pressing plate presses the head component into the shell.

[0005] Further, a plurality of position adjusting holes are symmetrically arranged on the two swing arms along the length direction, and a plurality of mounting holes are arranged on the two embracing rings, and the position adjusting holes and the mounting holes are connected by bolts.

[0006] Further, an anti-static rubber sheet is arranged on the side of the pressing plate close to the head part, and a reinforcing rib is arranged on the side of the pressing plate close to the driving part.

[0007] Further, the two arc-shaped embracing rings are connected by two connecting assemblies, the connecting assembly comprises a connecting pin, at least one articulated bolt and a fastening nut, and the arc-shaped two ends of each embracing ring respectively extend radially outward to be provided with a connecting lug plate, the two connecting lug plates of one embracing ring correspond to the two connecting lug plates of the other embracing ring to form two sets of connecting lug plate pairs, and each connecting assembly detachably connects one set of connecting lug plate pairs.

[0008] Further, in each set of connecting lug plate pairs, a first connecting hole and at least one second connecting hole are respectively arranged on one of the connecting lug plates along the length direction and the thickness direction, and at least one third connecting hole is arranged on the other connecting lug plate along the thickness direction, the head of each articulated bolt is arranged in one second connecting hole, the rod part penetrates one third connecting hole, the connecting pin is inserted into the first connecting hole and penetrates the head of the articulated bolt, and each fastening nut is threadedly connected to the rod part of one articulated bolt.

[0009] Further, a limiting groove is arranged at the third connecting hole, the limiting groove is communicated with the corresponding third connecting hole and forms a limiting step surface, the fastening nut is screwed into the articulated bolt and is limited to abut against the limiting step surface, and the cross section of the limiting groove is circular and is matched with the shape of the fastening nut.

[0010] Further, a plurality of second connecting holes and a plurality of third connecting holes are respectively arranged on the connecting lug plate pairs, and the articulated bolt and the fastening nut are provided with a plurality of connecting holes.

[0011] Further, in each set of connecting lug plate pairs, through holes are respectively arranged on the two connecting lug plates in correspondence, the two connecting lug plates are connected and fixed by penetrating the through holes on the two connecting lug plates by a bolt and threadedly connecting with a nut.

[0012] Further, the mounting seat is provided with two lifting rings arranged at the two ends of the upper surface of the mounting seat, so that the engine head assembly device is kept stable and reliable during hoisting.

[0013] Based on the same inventive concept, the application further provides a solid rocket engine head part quick assembly method, comprising the following steps: S1: the solid rocket engine shell is turned from horizontal to vertical state and hoisted to the corresponding assembly platform; S2: the fixed clamp is fixed to the corresponding position of the engine shell through the connecting assembly; S3: the head part is gently placed in the corresponding position required to cooperate with the engine shell, and coaxiality with the engine shell is ensured as much as possible; S4: the mounting frame and the driving assembly are connected and then fastened to the fixed clamp; S5: the connecting hole position of the swing arm is adjusted in time according to the size of the head part; S6: the driving pressure plate is moved towards the solid rocket engine shell, and after contacting the head part, a greater force is applied to press the head part into the solid rocket engine shell, and the assembly is completed.

[0014] The above one or more technical solutions of the present application have at least one or more of the following technical effects: (1) Vertical assembly can ensure high axial alignment accuracy of the accessories and the engine; (2) The structure is simple, the operation is convenient, safe and reliable, the assembly efficiency is high, and the manufacturing cost is low; (3) It can meet the assembly of engine accessories of different sizes, and has good adaptability. DETAILED DESCRIPTION

[0015] Figure 1 , the structure schematic view of the engine head part quick assembly device; Figure 2 , the structure schematic view of the engine head part quick assembly device on the shell; Figure 3 , the structure schematic view of the fixed clamp Figure 1 ; Figure 4 , the structure schematic view of the fixed clamp Figure 2 .

[0016] Wherein, 1, the mounting frame; 11, the mounting seat; 12, the swing arm; 2, the fixed clamp; 21, the clamp ring; 211, the connecting ear plate; 3, the driving assembly; 31, the driving part; 32, the pressure plate; 4, the connecting assembly; 41, the connecting pin; 42, the hinge bolt; 43, the fastening nut; 44, the snap spring; 5, the lifting ring; 6, the reinforcing rib; 7, the anti-static rubber; 10, the first connecting hole; 20, the second connecting hole; 30, the third connecting hole; 40, the limiting groove; 100, the shell; 200, the head part. DETAILED DESCRIPTION

[0017] The embodiment of the present application provides a solid rocket engine head component quick assembly device, and solves the technical problem that the solid rocket engine head component (a top cover + a nozzle) can be precisely and quickly assembled with a shell.

[0018] The technical solutions in the embodiments of the present application are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art belong to the protection scope of the present application.

[0019] Embodiment 1 As shown in the figure, a solid rocket engine head component quick assembly device comprises: Figures 1-4 a mounting frame 1, wherein the mounting frame 1 comprises a mounting seat 11 and two swing arms 12; the two swing arms 12 are respectively rotatably connected to opposite ends of the mounting seat 11 through rotating pins; a fixed hoop 2, wherein the fixed hoop 2 comprises two arc-shaped hoops 21, and the two arc-shaped hoops 21 are respectively connected to the two swing arms 12; opposite ends of the two hoops 21 are detachably connected; a driving assembly 3, wherein the driving assembly 3 comprises a driving piece 31 and a pressing plate 32, and the driving piece 31 is connected with the pressing plate 32; the driving piece 31 is installed on the mounting seat 11; When working, the fixed hoop 2 tightly holds the engine shell, the pressing plate 32 is radially moved along the shell 100, and the pressing plate 32 presses the head component 200 into the inside of the shell 100. The mounting seat 11 provides a support space for the driving piece 31, and the two swing arms 12 are rotatably arranged, so that when the engine head assembly device is installed, the two swing arms 12 can be conveniently separated, that is, the hoops 21 on the two swing arms 12 are separated, the hoops 21 can be conveniently held from the opposite sides of the shell 100, and the two hoops 21 can be conveniently detached from the shell 100 after the head component 200 is assembled. When the engine head assembly device is installed, the hoops 21 do not interfere with the shell 100, and the shell 100 is not scratched.

[0020] The two swing arms 12 are symmetrically and spaced apart along the length direction, a plurality of position adjusting holes are arranged on the two swing arms 12, a plurality of mounting holes are arranged on the two hoops 21, and the position adjusting holes and the mounting holes are connected through bolts. The position adjusting holes in different positions are selectively connected through bolts, so that the position of the hoop 21 can be adjusted.

[0021]

[0022] ​The anti-static rubber sheet 7 is arranged on the side of the pressing plate 32 close to the head part component, so as to prevent static electricity from being generated when the head part component 200 is pressed. The reinforcing ribs 6 are arranged on the side of the pressing plate 32 close to the driving part 31, so as to improve the structural strength of the pressing plate 32 and avoid deformation of the pressing plate 32 due to excessive force. The reinforcing ribs 6 extend along the radial direction of the pressing plate 32, and a plurality of reinforcing ribs 6 are arranged along the circumferential direction of the pressing plate 32, so as to improve the overall strength and uniformity of the strength of the pressing plate 32.

[0023] When the head part component 200 needs to be assembled, the two arc-shaped embracing rings 21 embrace the shell 100 of the engine respectively, and then the opposite ends of the two embracing rings 21 are connected, so that the two embracing rings 21 are fixed, and the engine head assembly device is fixed on the shell 100 of the engine. The arc-shaped embracing rings are convenient to install and disassemble, and are matched with the shape of the shell 100 of the engine, and are easy to fix.

[0024] The two arc-shaped embracing rings 21 are connected through two connecting assemblies 4, and the connecting assembly 4 includes a connecting pin 41, at least one articulated bolt 42 and a fastening nut 43. The arc-shaped two ends of each embracing ring 21 extend radially outward to arrange a connecting lug plate 211 respectively, and the two connecting lug plates 211 of one embracing ring 21 correspond to the two connecting lug plates 211 of the other embracing ring 21 to form two groups of connecting lug plate pairs. Each connecting assembly 4 can detachably connect one group of connecting lug plate pairs. When assembling, the two embracing rings 21 are clamped to the shell 100 from both sides, and then the two embracing rings 21 are fixed through the two connecting assemblies 4, so that the two embracing rings 21 tightly embrace the shell 100. The connecting lug plate 211 is convenient for the connection of the connecting assembly 4, and the operation is convenient.

[0025] In each group of connecting lug plate pairs, a first connecting hole 10 and at least one second connecting hole 20 are arranged on one of the connecting lug plates 211 along the length direction and the thickness direction respectively, and at least one third connecting hole 30 is arranged on the other connecting lug plate 211 along the thickness direction. The head of each articulated bolt 42 is arranged in one second connecting hole 20, the rod part penetrates one third connecting hole 30, the connecting pin 41 is inserted into the first connecting hole 10 and penetrates the head of the articulated bolt 42, and each fastening nut 43 is threadedly connected to the rod part of one articulated bolt 42. The two ends of the connecting pin 41 are respectively provided with clamping grooves, and the connecting pin 41 is fixed by being inserted into the first connecting hole 10 and then being clamped into the two clamping grooves through the two clamping springs 44.

[0026] The third connecting hole 30 is provided with a limiting groove 40, the limiting groove 40 is communicated with the corresponding third connecting hole 30, and a limiting step surface is formed. The fastening nut 43 is screwed into the universal joint bolt 42 and abuts against the limiting step surface. By providing the limiting groove 40, the fastening nut 43 can be limited in the limiting groove 40, so that the universal joint bolt 42 and the fastening nut 43 are prevented from being separated from the third connecting hole 30, and the connection stability of each connecting lug plate pair is ensured. The fastening nut 43 can be selected but is not limited to a hexagonal flange nut. More preferably, the cross-sectional shape of the limiting groove 40 is circular and matches the shape of the fastening nut 43.

[0027] The connecting lug plate pair is provided with a plurality of second connecting holes 20 and a plurality of third connecting holes 30, respectively. The universal joint bolt 42 and the fastening nut 43 are provided with a plurality of connecting holes. For example, one of the connecting lug plates 211 in each connecting lug plate pair is provided with three second connecting holes 20 along the length direction thereof, and the other connecting lug plate 211 is provided with three third connecting holes 30 along the length direction thereof. The universal joint bolt 42 and the fastening nut are provided with three connecting holes, respectively. Of course, in other embodiments, the number of second connecting holes 20 and third connecting holes 30 can be other numbers, for example, four or five, etc. The actual needs are set.

[0028] In each connecting lug plate pair, the two connecting lug plates 211 are provided with through holes corresponding to each other, respectively. The two connecting lug plates 211 are connected and fixed by screwing a bolt through the through holes of the two connecting lug plates 211 and then screwing a nut. The two connecting lug plates 211 in each connecting lug plate pair can also be connected by other structures, such as a latch or a buckle.

[0029] The mounting seat 11 is provided with two lifting rings 5, which are arranged at the two ends of the upper surface of the mounting seat 11, so that the engine head assembly device remains stable and reliable during lifting.

[0030] Embodiment 2 A solid rocket engine head component rapid assembly method, comprising the following steps: S1: Turn the solid rocket engine shell from horizontal to vertical and hoist it into the corresponding assembly platform; S2: Fix the fixed clamp 2 to the corresponding position of the engine shell through the connecting assembly 4; S3: Gently place the head component in the corresponding position that needs to cooperate with the engine shell, and try to ensure that it is coaxial with the engine shell; S4: After the mounting bracket 1 and the driving assembly 3 are connected, they are tightly connected with the fixed clamp 2; S5: Adjust the connecting hole position of the swing arm in time according to the size of the head component; S6: by driving the pressing plate 32 to move towards the solid rocket engine shell, and after contacting with the head part, a greater force is applied to press the head part into the solid rocket engine shell, and the assembly is completed.

Claims

1. A rapid assembly device for a solid rocket motor head component, characterized in that, include: Mounting bracket (1), the mounting bracket (1) includes mounting base (11) and two swing arms (12); the two swing arms (12) are respectively rotatably connected to the opposite ends of the mounting base (11) by rotating pins; Fixed clamp (2), the fixed clamp (2) includes two arc-shaped clamps (21), the two arc-shaped clamps (21) are respectively connected to two swing arms (12), and the opposite ends of the two clamps (21) are detachably connected; The drive assembly (3) includes a drive component (31) and a pressure plate (32), the drive component (31) being connected to the pressure plate (32); the drive component (31) is mounted on the mounting base (11). During operation, the fixed clamp (2) holds the solid rocket engine casing tightly, and the driving pressure plate (32) moves radially along the solid rocket engine casing (100), so that the pressure plate (32) presses the end cap component (200) into the solid rocket engine casing (100).

2. The rapid assembly device for solid rocket motor head components according to claim 1, characterized in that: The two swing arms (12) are symmetrically spaced along the length direction with multiple position adjustment holes, and the two retaining rings (21) are provided with multiple mounting holes. The position adjustment holes and mounting holes are connected by bolts.

3. The rapid assembly device for solid rocket motor head components according to claim 1, characterized in that: The pressure plate (32) is provided with antistatic rubber (7) on the side near the end cap component; the pressure plate (32) is provided with reinforcing ribs (6) on the side near the drive component (31).

4. The rapid assembly device for solid rocket motor head components according to claim 1, characterized in that: The two arc-shaped retaining rings (21) are connected by two connecting components (4), which include a connecting pin (41), at least one hinge bolt (42) and a fastening nut (43). Each of the arc-shaped retaining rings (21) has connecting ear plates (211) extending radially outward at both ends. The two connecting ear plates (211) of one retaining ring (21) correspond one-to-one with the two connecting ear plates (211) of the other retaining ring (21) to form two sets of connecting ear plate pairs. Each connecting component (4) can be detachably connected to one set of connecting ear plate pairs.

5. The rapid assembly device for solid rocket motor head components according to claim 4, characterized in that: In each pair of connecting lugs, one connecting lug (211) has a first connecting hole (10) and at least one second connecting hole (20) through it along its length and thickness directions, respectively. The other connecting lug (211) has at least one third connecting hole (30) through it along its thickness direction. The head of each hinge bolt (42) is placed in a second connecting hole (20), and the rod passes through a third connecting hole (30). The connecting pin (41) is inserted into the first connecting hole (10) and passes through the head of the hinge bolt (42). Each fastening nut (43) is threaded to the rod of a hinge bolt (42). The two ends of the connecting pin (41) are respectively provided with slots. After the connecting pin (41) is inserted into the first connecting hole (10), the connecting pin (41) is fixed by two retaining springs (44) respectively being inserted into the two slots.

6. The rapid assembly device for solid rocket motor head components according to claim 5, characterized in that: A limiting groove (40) is provided at the third connecting hole (30). The limiting groove (40) is connected to the corresponding third connecting hole (30) and forms a limiting step surface. The fastening nut (43) is screwed into the hinge bolt (42) and limited to abut against the limiting step surface. The cross-section of the limiting groove (40) is circular and matches the shape of the fastening nut (43).

7. The rapid assembly device for solid rocket motor head components according to claim 6, characterized in that: The connecting lugs are provided with a plurality of second connecting holes (20) and a plurality of third connecting holes (30); the hinge bolt (42) and the fastening nut (43) are provided with a plurality of connecting holes.

8. The rapid assembly device for solid rocket motor head components according to claim 6, characterized in that: Each set of connecting ear plates is aligned, and two connecting ear plates (211) are respectively provided with through holes. After the bolt passes through the through holes on the two connecting ear plates (211), it is threadedly connected to the nut to realize the connection and fixation of the two connecting ear plates (211).

9. The rapid assembly device for solid rocket motor head components according to claim 1, characterized in that: The mounting base (11) is provided with two lifting rings (5), which are respectively located at both ends of the upper surface of the mounting base (11), so that the engine head assembly device remains stable and reliable during hoisting.

10. A method for assembling a solid rocket motor head component using the assembly device according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Flip the solid rocket motor casing from horizontal to vertical and hoist it into the corresponding assembly platform; S2: Fix the fixing clamp (2) to the corresponding position on the engine housing via the connecting assembly (4); S3: Gently place the end cap component in the appropriate position where it needs to mate with the engine housing, and try to ensure that it is coaxial with the engine housing; S4: After connecting the mounting bracket (1) and the drive assembly (3), tighten them with the fixing clamp (2); S5: The connection hole position of the swing arm can be adjusted in a timely manner according to the outer dimensions of the end cap component; S6: The drive plate (32) moves towards the solid rocket motor housing and, after contacting the end cap component, applies a greater force to press the end cap component into the solid rocket motor housing, thus completing the assembly.

Images