A solid rocket motor grain assembly curing staging device

Abstract

The present application belongs to the field of aerospace technology, and particularly relates to a solid rocket engine grain assembly curing and temporary storage device. The device comprises a curing frame fixing unit, a curing frame moving unit and a grain clamping and fixing unit. The curing frame moving unit is provided with a plurality of grain clamping and fixing units. The grain clamping and fixing unit is used for clamping and fixing the grain assembly of the solid rocket engine. The curing frame moving unit is used for the flow transfer of the grain assembly. The curing frame fixing unit is fixed relative to the ground. The curing frame moving unit can enter and exit the curing frame fixing unit. When the curing frame moving unit enters the curing frame fixing unit, it is locked to realize the curing and temporary storage of the assembled grain assembly. The present application is used for the curing and temporary storage of the assembled grain assembly of the solid rocket engine, and can realize the positioning, clamping and fixing of the grain assembly and the simultaneous curing of multiple stations, effectively solving the problem of unreliable bonding caused by the lack of positioning and fixing after the bonding of the grain assembly.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of aerospace technology, and particularly relates to a solid rocket engine grain assembly curing temporary storage device. BACKGROUND

[0002] In the process of assembling the solid rocket engine grain assembly, the curing process after bonding is a key link to ensure the reliability of the structure. In the traditional process, the grain assembly is usually bonded and then cured naturally or fixed by a simple support. However, there is a lack of precise positioning and clamping mechanism, and the assembly may be easily deviated or debonded when the adhesive has not been cured, resulting in that the bonding strength does not meet the standard. The curing space utilization is low, and it is difficult to realize multi-station parallel processing, which affects the production efficiency. The assembly after curing is transferred by manual operation, which is difficult to operate in a small space or complex working conditions, and there are safety risks and other technical defects. Although there are individual fixing devices in the prior art, they generally have the problems of complex structure, poor adaptability, and difficult maintenance, which cannot meet the engineering requirements of high reliability, modularity and space expandability. Therefore, there is an urgent need for a special device with accurate positioning, multi-station collaborative curing capacity and flexible movement. SUMMARY

[0003] In view of the above problems, the present application aims to provide a solid rocket engine grain assembly curing temporary storage device to solve the problems of complex structure, poor adaptability and difficult maintenance of the existing fixing device.

[0004] The purpose of the present application is achieved by the following technical solutions:

[0005] The present application provides a solid rocket engine grain assembly curing temporary storage device, which comprises a curing frame fixing unit, a curing frame moving unit and a grain clamping and fixing unit. The curing frame moving unit is provided with a plurality of grain clamping and fixing units. The grain clamping and fixing unit is used for clamping and fixing the grain assembly of the solid rocket engine. The curing frame moving unit is used for the flow transfer of the grain assembly. The curing frame fixing unit is fixed relative to the ground. The curing frame moving unit can enter and exit the curing frame fixing unit. When the curing frame moving unit enters the curing frame fixing unit, it is locked to realize the curing and temporary storage of the assembled grain assembly.

[0006] The curing frame moving unit comprises a proximity switch, a moving unit support, a universal wheel, a moving frame, a guide assembly and a roller assembly. The bottom of the moving unit support is provided with a universal wheel. The top of the moving unit support is provided with a moving frame. The upper part of the moving unit support is provided with a roller assembly on both sides. The roller assembly is in rolling contact with the curing frame fixing unit. The bottom of the moving frame is provided with a plurality of guide assemblies corresponding to each grain clamping and fixing unit. One side of each guide assembly is provided with a proximity switch. The proximity switch cooperates with the guide assembly to control the automatic centering and clamping of the grain clamping and fixing unit to the grain assembly.

[0007] The guide assembly comprises a guide seat and two guide seat limiting supports respectively arranged on opposite sides of the guide seat, and the two guide seat limiting supports are used for radially positioning the guide seat; the side surface of the guide seat is slotted, and the proximity switch is opposite to the slot direction; when the propellant grain assembly enters the guide seat, the proximity switch is triggered.

[0008] One end of the moving frame is provided with a moving handle; the moving frame is provided with a fixed pin shaft guide seat and a fixed pin inserted into the guide hole of the fixed pin shaft guide seat, and the fixed pin is used for positioning between the moving frame and the curing frame fixing unit;

[0009] An electromagnetic valve box is arranged on the outer side of the bottom of the moving frame, and the electromagnetic valve box is used for controlling the propellant grain clamping and fixing unit.

[0010] The top of the curing frame moving unit is provided with a plurality of groups of guide rail assemblies parallel to each other, and each guide rail assembly is provided with a plurality of groups of propellant grain clamping and fixing units.

[0011] The propellant grain clamping and fixing unit comprises a clamping assembly, a clamping finger, a cylinder mounting plate and a cylinder, wherein the cylinder mounting plate is fixed on the top of the curing frame moving unit, the cylinder is mounted on the cylinder mounting plate, and two extending ends of the cylinder are respectively provided with clamping fingers, the two clamping fingers are respectively connected with two clamping assemblies, the bottoms of the two clamping assemblies are respectively connected with the guide rail assemblies in a sliding mode, and the cylinder is driven to extend or retract to drive the two clamping assemblies to open or close.

[0012] The clamping assembly comprises a clamping block, a clamping block mounting plate, a sliding block and a sliding block seat, wherein the clamping block mounting plate is mounted on the sliding block seat, the bottom of the sliding block seat is provided with a sliding block which is in sliding cooperation with the guide rail assembly, the front surface of the clamping block mounting plate is provided with a clamping block, and the clamping block has an arc-shaped groove structure.

[0013] The front surface of the clamping block mounting plate is provided with a dovetail groove, and the back surface of the clamping block is provided with a dovetail structure matched with the dovetail groove of the clamping block mounting plate.

[0014] The curing frame fixing unit comprises a roller guide rail, a guide rail mounting plate, a fixing unit frame body, a foundation and an expansion bolt, wherein the bottom of the fixing unit frame body is provided with four foundations, each foundation is provided with an expansion bolt used for connecting with the ground; the two sides of the top of the fixing unit frame body are provided with the guide rail mounting plates, and the inner sides of the guide rail mounting plates are provided with the roller guide rails.

[0015] The fixing unit frame body is a U-shaped structure with an opening at one end in the horizontal direction, which is convenient for the curing frame moving unit to enter and exit; the closed end and the open end of the fixing unit frame body are both provided with a stopper used for limiting the curing frame moving unit; the two sides of the fixing unit frame body are provided with a fixed pin hole support used for locking the curing frame moving unit;

[0016] The outer side of the guide rail mounting plate is provided with a mounting protective cover.

[0017] The advantages and positive effects of the present application are as follows: the present application provides a solid rocket engine grain assembly curing and temporary storage device, which is used for curing and temporary storage of the assembled solid rocket engine grain assembly, can realize positioning, clamping and fixing of the grain assembly, and simultaneous curing of multiple stations, and effectively solves the problem of unreliable bonding of the grain assembly due to lack of positioning and fixing after bonding.

[0018] The solid rocket engine grain assembly curing and temporary storage device of the present application adopts a combined design of curing frame moving unit and curing frame fixing unit, has the ability to fold and unfold in a small space, can meet the batch curing demand of standard stations, and can also adapt to flexible operation requirements in small spaces or special working conditions.

[0019] The present application ensures the stability of the device during the curing process through the double insurance mechanism of eccentric roller locking and fixing pin, and provides a safe and reliable curing environment for the grain assembly.

[0020] Other features and advantages of the present application will be described in the following specification, and some will become apparent from the specification, or will be understood by those skilled in the art through implementation of the present application. The purpose and other advantages of the present application can be achieved and obtained by the structure specifically pointed out in the written specification and the accompanying drawings.

[0021] The technical solutions of the present application will be further described in detail below through the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are used to provide further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of the solid rocket engine grain assembly curing and temporary storage device of the present application;

[0024] Figure 2 It is a structural schematic diagram of the curing frame moving unit in the present application;

[0025] Figure 3 It is a structural schematic diagram of the curing frame fixing unit in the present application;

[0026] Figure 4 It is a structural schematic diagram of the grain clamping and fixing unit in the present application.

[0027] Wherein: 1 is a curing frame moving unit; 2 is a propellant grain clamping and fixing unit; 3 is a curing frame fixing unit; 4 is a moving handle; 5 is an upper limit seat plate; 6 is a guide seat; 7 is a guide seat limiting support; 8 is a proximity switch; 9 is a proximity switch seat; 10 is a limiting baffle; 11 is a moving unit support; 12 is a universal wheel; 13 is an electromagnetic valve box; 14 is an eccentric roller; 15 is a fixed pin shaft guide seat; 16 is a fixed pin; 17 is a lower limit seat plate; 18 is a guide rail; 19 is a support column; 20 is a protective cover; 21 is a roller guide rail; 22 is a guide rail mounting plate; 23 is a stop block; 24 is a stop block support; 25 is a fixed pin hole support; 26 is a fixed unit frame body; 27 is a ground foot; 28 is an expansion bolt; 29 is a clamping block; 30 is a shaft sleeve; 31 is a clamping block mounting plate; 32 is a clamping finger; 33 is a cylinder mounting plate; 34 is a cylinder; 35 is a sliding block; and 36 is a sliding block seat. DETAILED DESCRIPTION

[0028] In the present application, unless otherwise clearly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0029] The preferred embodiments of the present application are described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application.

[0030] In the process of solid rocket engine propellant grain assembly, if the propellant grain assembly is placed or stacked randomly after bonding, the positioning of the propellant grain assembly will be deviated, the bonding will be not firm or the bonding will be detached due to the fact that the adhesive has not been cured. In view of the above problems, the present application provides a solid rocket engine propellant grain assembly curing temporary storage device, which can realize the positioning, clamping and fixing of the propellant grain assembly and the simultaneous curing of multiple stations. Referring to Figure 1 As shown in the figure, the solid rocket engine propellant grain assembly curing temporary storage device comprises a curing frame fixing unit 3, a curing frame moving unit 1 and a propellant grain clamping and fixing unit 2, wherein the curing frame moving unit 1 is provided with multiple propellant grain clamping and fixing units 2, the propellant grain clamping and fixing unit 2 is used for clamping and fixing the propellant grain assembly of the solid rocket engine, and the curing frame moving unit 1 is used for the flow transfer of the propellant grain assembly; the curing frame fixing unit 3 is fixed relative to the ground, the curing frame moving unit 1 can enter the inside of the curing frame fixing unit 3, and the curing frame moving unit 1 is locked after entering the curing frame fixing unit 3, so as to realize the curing and temporary storage of the assembled propellant grain assembly.

[0031] Referring to Figure 2As shown, in the embodiment of the present application, the curing frame moving unit 1 comprises proximity switches 8, a moving unit support 11, universal wheels 12, a moving frame, guide assemblies and roller assemblies, wherein the four feet of the moving unit support 11 are each provided with a universal wheel 12 to provide the curing frame moving unit 1 with the ability to move. The top of the moving unit support 11 is provided with the moving frame, and the two sides of the top of the moving unit support 11 are provided with the roller assemblies which are in rolling contact with the curing frame fixing unit 3. The bottom of the moving frame is provided with a plurality of guide assemblies which correspond to the respective cartridge clamping and fixing units 2. One side of each guide assembly is provided with a proximity switch 8 which cooperates with the guide assembly to control the automatic centering and accurate positioning of the cartridge clamping and fixing unit 2 on the cartridge assembly, thereby ensuring that different size assemblies can be reliably clamped and fixed.

[0032] Specifically, the moving frame is a cuboid frame comprising an upper limiting seat plate 5, a lower limiting seat plate 17 and four support columns 19 connected between the upper limiting seat plate 5 and the lower limiting seat plate 17. The four support columns 19 are respectively installed at the four corner positions of the lower limiting seat plate 17, and a plurality of guide assemblies are arranged on the lower limiting seat plate 17. The roller assemblies comprise a plurality of eccentric rollers 14 symmetrically arranged on the two sides of the top of the moving unit support 11.

[0033] In the embodiment of the present application, the guide assembly comprises a guide seat 6 arranged on the lower limiting seat plate 17 and two guide seat limiting supports 7 respectively arranged on the opposite sides of the guide seat 6. The two guide seat limiting supports 7 are used to radially position the guide seat 6, and the side surface of the guide seat 6 is slotted. The proximity switch 8 is arranged on the lower limiting seat plate 17 through a proximity switch seat 9, and the proximity switch 8 is opposite to the slot direction of the guide seat 6. When the cartridge assembly enters the guide seat 6, the proximity switch 8 is triggered.

[0034] Further, one end of the lower limiting seat plate 17 is provided with a fixed pin shaft guide seat 15 and a fixed pin 16 inserted into the guide hole of the fixed pin shaft guide seat 15, and the fixed pin 16 is used for positioning between the moving frame and the curing frame fixing unit 3. One end of the length direction of the moving frame is provided with a moving handle 4. The bottom outer side of the moving frame is provided with an electromagnetic valve box 13 which is used to control the cartridge clamping and fixing unit 2. The front end inner side of the moving unit support 11 is provided with a limiting baffle 10.

[0035] Referring to Figure 3As shown, in the embodiment of the present application, the curing frame fixing unit 3 comprises a roller guide rail 21, a guide rail mounting plate 22, a fixing unit frame body 26, a ground foot 27 and an expansion bolt 28, wherein the bottom of the fixing unit frame body 26 is provided with four ground feet 27, each of which is provided with an expansion bolt 28 for connecting with the ground; the top of the fixing unit frame body 26 is provided with the guide rail mounting plate 22 on both sides, the inner side of the guide rail mounting plate 22 is provided with the roller guide rail 21, the outer side of the guide rail mounting plate 22 is provided with the protective cover 20, and the eccentric roller 14 is matched with the roller guide rail 21.

[0036] Further, the fixing unit frame body 26 is a U-shaped structure with an open end in the horizontal direction, having a closed end and an open end, facilitating the curing frame moving unit 1 to enter and exit; the closed end and the open end of the fixing unit frame body 26 are provided with a stop block 23 for limiting the curing frame moving unit 1; the two sides of the fixing unit frame body 26 are provided with a fixed pin hole support 25 for locking the curing frame moving unit 1; the fixed pin 16 on the moving frame is inserted into the pin hole on the corresponding fixed pin hole support 25, realizing the locking of the curing frame moving unit 1 and the curing frame fixing unit 3.

[0037] Specifically, the stop block 23 is made of flexible rubber material, two stop blocks 23 are installed on the inner side of the closed end of the fixing unit frame body 26, and one stop block 23 is installed on the right side stop block support 24 of the open end of the fixing unit frame body 26. When the curing frame moving unit 1 is pushed into the curing frame fixing unit 3, the two stop blocks 23 on the inner side of the closed end of the fixing unit frame body 26 provide limiting for the curing frame moving unit 1; the stop block 23 on the right side stop block support 24 of the open end of the fixing unit frame body 26 provides limiting for the curing frame moving unit 1 when the curing frame moving unit 1 is moved out of the curing frame fixing unit 3. When the curing frame moving unit 1 is moved out, the limiting stop plate 10 on the moving unit support 11 contacts the stop block 23 on the right side stop block support 24 of the open end of the fixing unit frame body 26, avoiding the curing frame moving unit 1 from being dragged out and separated from the curing frame fixing unit 3. When the curing is completed and the curing frame moving unit 1 needs to be completely moved out, the limiting stop plate 10 is contacted, the curing frame moving unit 1 is completely moved out of the curing frame fixing unit 3, and the curing frame moving unit 1 is pushed to the next process.

[0038] Referring to Figure 2 As shown, in the embodiment of the present application, a plurality of groups of guide rail assemblies parallel to each other are arranged above the upper limiting seat plate 5, and a plurality of groups of cartridge clamping and fixing units 2 are arranged on each guide rail assembly. Specifically, each guide rail assembly comprises two guide rails 18 laid in parallel.

[0039] Referring to Figure 4As shown, in the embodiment of the present application, the cartridge clamping and fixing unit 2 comprises clamping assemblies, clamping fingers 32, a cylinder mounting plate 33 and a cylinder 34, wherein the cylinder mounting plate 33 is fixed on the top of the upper limit seat plate 5 of the curing frame moving unit 1, the cylinder 34 is mounted on the cylinder mounting plate 33, and two extending ends of the cylinder 34 are respectively provided with clamping fingers 32, the two clamping fingers 32 are respectively connected with two clamping assemblies, the bottom of each of the two clamping assemblies is slidably connected with the guide rail 18, the cylinder 34 drives the two clamping assemblies to open or close through extension and retraction, the sliding block 35 is constrained by the guide rail 18, so that the opening and closing movement is more stable, and the stability of the axis of the cartridge clamping and fixing unit 2 is maintained. When the proximity switch 8 is triggered, the cylinder 34 is controlled to retract, and the clamping and fixing of the cartridge assembly are completed. Specifically, the proximity switch 8 and the cylinder 34 are commercially available products.

[0040] In the embodiment of the present application, the clamping assembly comprises a clamping block 29, a clamping block mounting plate 31, a sliding block 35 and a sliding block seat 36, wherein the clamping block mounting plate 31 is provided with an installation hole on each of the left and right sides, and the shaft sleeve 30 passes through the installation hole on the clamping block mounting plate 31 and cooperates with the sliding block seat 36. The sliding block 35 slidably connected with the guide rail 18 is mounted on the bottom of the sliding block seat 36, and the clamping block 29 is mounted on the front surface of the clamping block mounting plate 31. The clamping block 29 has an arc-shaped groove structure.

[0041] Further, the front surface of the clamping block mounting plate 31 is provided with a dovetail groove, and the back surface of the clamping block 29 is provided with a dovetail structure matched with the dovetail groove of the clamping block mounting plate 31.

[0042] In the embodiment, the guide rail 18 has four guide rails, which are sequentially mounted on the upper surface of the upper limit seat plate 5. The cartridge clamping and fixing unit 2 is arranged with ten groups on the upper limit seat plate 5, so that the curing of ten cartridge assemblies can be simultaneously realized. Ten guide seats 6 are mounted on the lower limit seat plate 17, the guide seats 6 are coaxial with the cartridge clamping and fixing unit 2, and the guide seats 6 are radially positioned by the guide seat limiting supports 7. The eccentric rollers 14 are twelve in number and are symmetrically and equally distributed on both sides of the moving unit support 11. The embodiment adopts a modular layout, which can simultaneously adapt to the curing needs of ten groups of cartridge assemblies of different specifications and can be compatible with the collinear curing tasks of multiple engine cartridge assemblies.

[0043] Specifically, the electromagnetic valve box 13 is provided with electromagnetic valves, pressure regulating valves, filters and other components, which are used to control the cylinder 34 in the cartridge clamping and fixing unit 2. The electromagnetic valves, pressure regulating valves, filters and other components are commercially available products.

[0044] The present application provides a solid rocket engine cartridge assembly curing and temporary storage device, and the working principle is as follows:

[0045] 1. Loading and positioning of the cartridge assembly:

[0046] The operator controls the external clamping tool to put the completed propellant grain assembly into the propellant grain clamping and fixing unit 2 one by one, and the propellant grain assembly falls into the guide seat 6 by gravity, and the design of the guide seat 6 ensures that the propellant grain assembly is automatically centered to avoid deviation. When the propellant grain assembly enters the guide seat 6, the proximity switch 8 is triggered, and the signal is transmitted to the electromagnetic valve box 13 to control the action of the air cylinder 34 to drive the clamping fingers 32 to close, so that the clamping block 29 stably clamps the propellant grain assembly to prevent displacement or debonding of the propellant grain assembly during the curing process.

[0047] 2. Multi-station synchronous curing:

[0048] The device adopts a modular layout, and ten propellant grain clamping and fixing units 2 are arranged on the upper limit seat plate 5, so that multiple propellant grain assemblies can be cured at the same time, thereby improving production efficiency. During the curing process, the propellant grain assembly maintains a stable posture to avoid uneven curing of the glue layer due to external force or vibration, thereby ensuring the bonding quality.

[0049] 3. Flexible adjustment of the moving unit:

[0050] When it is necessary to transfer the propellant grain assembly in a narrow space or between different stations, the operator can push the curing frame moving unit 1 through the moving handle 4 to realize free movement by using the universal wheels 12 at the bottom.

[0051] After the curing frame moving unit 1 enters the curing frame fixing unit 3, the fixing pin 16 is inserted into the fixing pin hole support 25, and the eccentric roller 14 cooperates with the roller guide rail 21 to ensure the stability of the curing frame moving unit 1 during the curing stage.

[0052] 4. Safety limiting and protection:

[0053] When the curing frame moving unit 1 is pushed into the curing frame fixing unit 3, the limiting baffle 10 contacts the stop block 23 to prevent excessive movement, and the stop block 23 made of flexible rubber material can absorb impact to avoid damage to the equipment. The protective cover 20 can prevent external dust interference to ensure stable curing environment.

[0054] 5. Taking out after curing is completed:

[0055] After curing is completed, the air cylinder 34 releases the clamping assembly, the operator can control the external clamping tool or manually take out the propellant grain assembly, or release the restraint of the limiting baffle 10 to directly push the curing frame moving unit 1 to the next process to realize efficient flow.

[0056] In summary, the application provides a solid rocket engine grain assembly curing temporary storage device, which is used for curing and temporary storage of the assembled solid rocket engine grain assembly, can realize positioning, clamping and fixing of the grain assembly and curing of multiple stations at the same time, and effectively solves the problem of unreliable bonding of the grain assembly due to lack of positioning and fixing after bonding.

[0057] Obviously, those skilled in the art can make various modifications and variations to the application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application belong to the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and variations.

Claims

1. A solid rocket motor grain assembly curing staging device, characterized by, The solidification frame moving unit (1) includes a proximity switch (8), a moving unit support (11), a universal wheel (12), a moving frame, a guide assembly, and a roller assembly, wherein the bottom of the moving unit support (11) is provided with the universal wheel (12), the top of the moving unit support (11) is provided with the moving frame, and the upper part of the moving unit support (11) is provided with the roller assembly on both sides, the roller assembly is in rolling contact with the solidification frame fixing unit (3); the bottom of the moving frame is provided with a plurality of guide assemblies corresponding to the respective solid column clamping and fixing units (2), one side of each guide assembly is provided with a proximity switch (8), the proximity switch (8) cooperates with the guide assembly to control the automatic centering and clamping of the solid column clamping and fixing unit (2) to the solid column assembly.

2. The solid rocket motor grain assembly curing staging device of claim 1, wherein, The guide assembly includes a guide seat (6) and two guide seat limiting supports (7) respectively arranged on the opposite sides of the guide seat (6), the two guide seat limiting supports (7) are used for radial positioning of the guide seat (6); the side surface of the guide seat (6) is slotted, and the proximity switch (8) is opposite the slot direction; when the solid column assembly enters the guide seat (6), the proximity switch (8) is triggered.

3. The solid rocket motor grain assembly curing staging device of claim 2, wherein, One end of the moving frame is provided with a moving handle (4); the moving frame is provided with a fixed pin shaft guide seat (15) and a fixed pin (16) inserted into the guide hole of the fixed pin shaft guide seat (15), the fixed pin (16) is used for positioning between the moving frame and the solidification frame fixing unit (3).

4. The solid rocket motor grain assembly curing staging device of claim 2, wherein, The bottom outer side of the moving frame is provided with an electromagnetic valve box (13), the electromagnetic valve box (13) is used for controlling the solid column clamping and fixing unit (2). The top of the solidification frame moving unit (1) is provided with a plurality of parallel guide rail assemblies, each guide rail assembly is provided with a plurality of solid column clamping and fixing units (2).

5. The solid rocket motor grain assembly curing staging device of claim 1, wherein, The solid column clamping and fixing unit (2) includes a clamping assembly, a clamping finger (32), a cylinder mounting plate (33), and a cylinder (34), wherein the cylinder mounting plate (33) is fixed on the top of the solidification frame moving unit (1), the cylinder (34) is mounted on the cylinder mounting plate (33), and the two extending ends of the cylinder (34) are respectively provided with a clamping finger (32), the two clamping fingers (32) are respectively connected with two clamping assemblies, the bottoms of the two clamping assemblies are respectively connected with the guide rail assemblies, and the cylinder (34) drives the two clamping assemblies to open or close through extension and contraction.

6. The solid rocket motor grain assembly curing staging device of claim 5, wherein, ​ 7. The solid rocket motor grain assembly curing staging device of claim 6, wherein, The clamping assembly comprises a clamping block (29), a clamping block mounting plate (31), a sliding block (35) and a sliding block seat (36), wherein the clamping block mounting plate (31) is mounted on the sliding block seat (36), the bottom of the sliding block seat (36) is provided with the sliding block (35) which is in sliding fit with the guide rail assembly, the front surface of the clamping block mounting plate (31) is provided with the clamping block (29), and the clamping block (29) has an arc-shaped groove structure.

8. The solid rocket motor grain assembly curing staging device of claim 7, wherein, The front surface of the clamping block mounting plate (31) is provided with a dovetail groove, and the back surface of the clamping block (29) is provided with a dovetail structure matched with the dovetail groove of the clamping block mounting plate (31).

9. The solid rocket motor grain assembly curing staging device of claim 1, wherein, The curing rack fixing unit (3) comprises a roller guide rail (21), a guide rail mounting plate (22), a fixing unit frame body (26), a ground foot (27) and an expansion bolt (28), wherein the bottom of the fixing unit frame body (26) is provided with four ground feet (27), each ground foot (27) is provided with an expansion bolt (28) connected with the ground; the top of the fixing unit frame body (26) is provided with the guide rail mounting plate (22) on both sides, and the inner side of the guide rail mounting plate (22) is provided with the roller guide rail (21).

10. The solid rocket motor grain assembly curing staging device of claim 9, wherein, The fixing unit frame body (26) is a U-shaped structure with an open end in the horizontal direction, which is convenient for the curing rack moving unit (1) to enter and exit; the closed end and the open end of the fixing unit frame body (26) are provided with a stop block (23) for limiting the curing rack moving unit (1); the two sides of the fixing unit frame body (26) are provided with a fixing pin hole support (25) for locking the curing rack moving unit (1); and the outer side of the guide rail mounting plate (22) is provided with a protective cover (20).

Images