Rocket engine overturning and hoisting tool and method

Abstract

The invention relates to a rocket engine overturning tool, in particular to a rocket engine overturning and hoisting tool and method. The problems that the butt joint face, connected with the end face of a rocket engine, of an existing overturning tool is a closed face, various pipelines connected with the rocket engine need to bypass, and the space for the pipelines to bypass in a test cabin is limited are solved. The rocket engine overturning and hoisting tool comprises an overturning tool and a switching tool, a switching frame comprises a cross-shaped center frame, an engine mounting disc is arranged in the center of the cross-shaped center frame, and engine mounting frames are vertically arranged at the four corners of the cross-shaped center frame correspondingly; the engine installation discs and the engine installation frames are used for being connected with the end face of the rocket engine, installation stability is guaranteed, after the cross-shaped center frame is connected with the end face, connected with the rocket engine, of the rocket engine, a gap is formed between every two adjacent engine installation frames, a pipeline can penetrate through the gap, and therefore the pipeline does not need to bypass, and the structural rigidity and strength of the cross-shaped center frame are very high. And the overturning requirement can be met.

Description

Technical Field

[0001] The invention relates to a rocket engine turning tool, and in particular to a rocket engine turning hoisting tool and a method. Background Art

[0002] When some types of rocket engines are tested on the ground, it is necessary to flip the rocket engine from a vertical posture to a horizontal posture, and then fix the rocket engine in the horizontal posture on the thrust frame for testing. When the rocket engine is flipped, it is only flipped by a crane and a sling, and its operation safety and accuracy cannot be guaranteed. Therefore, the end face of the rocket engine is generally connected to the flipping tool, and then the flipping tool is flipped. Because the rocket engine and the flipping tool are rigidly connected, when the flipping tool is flipped, the rocket engine will also flip with it. After the flip is completed, the rocket engine is connected to the thrust frame through the flipping tool, but the existing flipping tool For the convenience of processing, it is generally an integrated structure, and its structure is relatively bulky. When the flip tooling is connected to the rocket engine, it will completely envelope the end face of the rocket engine. During the test, it is necessary to connect various pipelines from the thrust frame to the end face of the rocket engine, such as fuel pipelines, test cable pipelines, etc. Because the flip tooling completely envelopes the end face of the rocket engine and there are no through holes on it for the pipelines to pass through, the pipelines need to bypass, and the entire test needs to be carried out in the test cabin. The space in the test cabin is very small, and the space for pipelines to bypass is limited. If through holes are opened at will, the flip tooling structure may lack rigidity, which may easily lead to safety hazards during flipping. Summary of the invention

[0003] The purpose of the present invention is to solve the technical problem that the docking surface between the existing flipping tooling and the end face of the rocket engine is a closed surface, various pipelines connected to the rocket engine need to be bypassed, and the space available for the pipelines to bypass in the test cabin is limited, and to provide a rocket engine flipping and lifting tooling and method.

[0004] In order to achieve the above-mentioned invention object, the present invention provides the following technical solutions:

[0005] A rocket engine flip hoisting tool, which is special in that it includes a flip tool and a transfer tool;

[0006] The turning tool comprises a crossbeam, a turning motor, a chain, a sprocket and a rotating beam. There are two turning motors and they are arranged at both ends of the crossbeam. The output shafts of the two turning motors are arranged opposite to each other and their axes are parallel to the axis of the crossbeam. There are two sprockets and they are respectively installed on the two output shafts; there are two chains and they are respectively meshed with the two sprockets. There are two rotating beams and they are located at the bottom of the crossbeam. Chain mounting frames are respectively vertically arranged at both ends of each rotating beam. The bottom end of the chain mounting frame is hinged to the rotating beam, and the two ends of the same chain are respectively hinged to the top ends of the chain mounting frames arranged at both ends of the same rotating beam;

[0007] The transfer tooling includes a transfer frame, which is located between two rotating beams. The transfer frame includes a cross center frame. An engine mounting plate is provided at the center of the inner end surface of the cross center frame, which is used to connect with the end surface of the rocket engine. Engine mounting frames are vertically provided at the four corners of the cross center frame, which are used to connect with the end surface of the rocket engine. A connecting frame is provided between two adjacent engine mounting frames. There are two connecting frames that are arranged opposite to each other. The connecting frame is connected to one end of the inner side surface of the rotating beam, and the end surface of the cross center frame is perpendicular to the axis of the rotating beam.

[0008] Furthermore, the turning tooling also includes a moving tooling and a variable pitch motor;

[0009] The movable tooling has two sets and corresponds to two flip motors respectively. Each set of movable tooling includes a motor mounting frame, a slide rail and a lead screw nut device. The slide rail is installed on the crossbeam and the extension direction of the slide rail is parallel to the extension direction of the crossbeam. The motor mounting frame slides with the slide rail and the flip motor is installed on the motor mounting frame. The motor mounting frame is connected to the nut in the lead screw nut device. The lead screw in the lead screw nut device is connected to the output shaft of the variable pitch motor installed on the crossbeam. When the variable pitch motor rotates, the two motor mounting frames move synchronously toward or away from the center position of the crossbeam.

[0010] Furthermore, a mounting plate is provided at one end of the inner side surfaces of the two rotating beams, and the connecting frame is connected to the mounting plate and the engine mounting frame respectively by bolts.

[0011] Furthermore, a mounting plate is also provided at the other end of the inner side surface of the rotating beam.

[0012] Furthermore, a lifting lug is provided at the center position of the top of the beam.

[0013] Furthermore, a counterweight is provided on the motor mounting frame.

[0014] Furthermore, the material of the transfer tooling is Q304 steel.

[0015] At the same time, the present invention also provides a method for flipping and hoisting a rocket engine, which uses the above-mentioned rocket engine flipping and hoisting tooling, and its special feature is that it includes the following steps:

[0016] S1, start the flip motor, drive the chain to rotate through the sprocket, so that the entire adapter frame rotates 90° until the adapter frame is located above the rotating beam and the end surface of the adapter frame is parallel to the horizontal plane;

[0017] S2, connecting the engine mounting plate of the adapter and the engine mounting frame to the end surface of the rocket engine in a vertical posture;

[0018] S3, start the flip motor, drive the chain to rotate in the opposite direction through the sprocket, and then flip the rocket engine 90 degrees until the rocket engine is in a horizontal posture;

[0019] S4. Lift the rocket engine into the test cabin in a horizontal position and dock the adapter frame with the thrust frame;

[0020] S5. Conduct rocket engine tests;

[0021] S6. After the test is completed, the adapter frame and the thrust frame are disassembled, and the rocket engine is hoisted outside the test cabin in a horizontal posture;

[0022] S7, start the flip motor, drive the chain to rotate through the sprocket, flip the rocket engine 90 degrees, and restore it to a vertical posture;

[0023] S8. Remove the rocket engine from the engine mounting plate and the engine mounting frame of the self-spinning frame to complete the flipping and hoisting of the rocket engine.

[0024] Furthermore, step S4 is specifically as follows: by connecting the hook of the crane with the lifting lug, the rocket engine is lifted into the test cabin in a horizontal posture, and the adapter frame is docked with the thrust frame.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) A rocket engine flipping and hoisting tool provided by the present invention includes a flipping tool and a transfer tool. The transfer tool includes a transfer frame. The transfer frame includes a cross center frame. An engine mounting plate is arranged at the center of the cross center frame. Engine mounting frames are vertically arranged at the four corners of the cross center frame. The engine mounting plate and the engine mounting frame are used to connect with the end face of the rocket engine to ensure stable installation. After the cross center frame is connected to the end face of the rocket engine, there is a gap between two adjacent engine mounting frames for the pipeline to pass through. In this way, the pipeline does not need to detour and the structural rigidity and strength of the cross center frame are very high, which can meet the flipping requirements. In addition, compared with the traditional tool, the structure of the entire transfer tool is lighter.

[0027] (2) The rocket engine flipping and hoisting tooling provided by the present invention can adjust the relative positions of the two flipping motors through the variable pitch motor and the moving tooling, so that it can adapt to the adapter tooling and rocket engines of different sizes.

[0028] (3) In the rocket engine flipping and lifting tooling provided by the present invention, the connecting frame and the rotating beam are detachably connected, and mounting plates are respectively provided at both ends of the inner side of the rotating beam for detachably connecting the connecting frame and the rotating beam, so that when one set of mounting plates is damaged, another set of mounting plates is available.

[0029] (4) A counterweight is provided on the motor mounting frame of a rocket engine flipping and hoisting tool provided by the present invention. When the rocket engine is flipped, the center of gravity of the entire tool will change. The counterweight is used to stabilize the entire tool to ensure stability during the flipping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of a rocket engine flip hoisting tooling of the present invention;

[0031] Figure 2 for Figure 1 The main view of

[0032] Figure 3 for Figure 1 Left view of;

[0033] Figure 4 for Figure 1 A top view of

[0034] Figure 5 It is a finite element analysis diagram of an adapter frame in an embodiment of a rocket engine flip hoisting tooling of the present invention;

[0035] Figure 6 It is a schematic diagram of the constraints and loading of the adapter frame in an embodiment of a rocket engine flip hoisting tooling of the present invention;

[0036] Figure 7 It is a cloud diagram of the total displacement of the adapter frame in an embodiment of a rocket engine overturning and hoisting tooling of the present invention;

[0037] Figure 8 This is a stress cloud diagram of the adapter frame in an embodiment of a rocket engine flipping and hoisting tooling of the present invention.

[0038] The following are the descriptions of the reference numerals:

[0039] 1- flip tooling, 11- cross beam, 12- flip motor, 13- chain, 131- sprocket; 14- rotating beam, 141- mounting plate, 142- chain mounting frame; 15- variable pitch motor, 16- motor mounting frame, 17- slide rail, 18- lifting ear, 19- counterweight; 2- adapter frame, 21- cross center frame, 22- engine mounting plate, 23- engine mounting frame, 24- connecting frame. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and exemplary embodiments.

[0041] Reference Figure 1-Figure 8 A rocket engine flip hoisting tooling of the present invention comprises a flip tooling 1 and a transfer tooling, wherein the flip tooling 1 comprises a crossbeam 11, a flip motor 12, a chain 13, a sprocket 131, and a rotating beam 14. There are two flip motors 12 and they are respectively arranged at both ends of the crossbeam 11, and the output shafts of the two motors 12 are arranged opposite to each other and the axes are parallel to the axis of the crossbeam 11. There are two sprockets 131 and they are also respectively installed on the two output shafts. The two chains 13 are respectively engaged with the two sprockets 131. Two rotating beams 14 are arranged at the bottom of the crossbeam 11, and chain mounting frames 142 are respectively vertically arranged at both ends of the rotating beam 14. The bottom end of the chain mounting frame 142 is hinged to the rotating beam 14, and the two ends of the same chain 13 are respectively hinged to the top of the chain mounting frame 142 arranged at both ends of the same rotating beam 14. Because the bottom end of the chain mounting frame 142 is hinged to the rotating beam 14, when the sprocket 131 drives the chain 13 to rotate, the chain mounting frame 142 will also rotate relative to the rotating beam 14, ensuring that the entire transfer tooling can be turned over 90°.

[0042] In order to adapt to the transfer fixtures of different sizes, the flipping fixture 1 also includes a mobile fixture and a variable pitch motor 15. There are two sets of mobile fixtures and they are respectively arranged corresponding to the two flipping motors 12. Each set of mobile fixtures includes a motor mounting frame 16, a slide rail 17 and a lead screw nut device. The slide rail 17 is installed on the beam 11 and its extension direction is parallel to the extension direction of the beam 11. The motor mounting frame 16 slides with the slide rail 17 through a slider. The slide rail 17 provides a motion guide for the motor mounting frame 16 and reduces the motion friction. The variable pitch motor 15 is installed at the center of the beam 11. The motor mounting frame 16 is connected to the nut in the lead screw nut device, and the lead screw in the lead screw nut device is connected to the output shaft of the variable pitch motor 15. The lead screws in the two sets of lead screw nut devices rotate in opposite directions. In this way, when the variable pitch motor 15 rotates, the two motor mounting frames 16 will move synchronously toward the center of the beam 11 or away from the center of the beam 11. The position adjustment of the two flipping motors 12 is completed by one variable pitch motor 15. The structure is simple and the manufacturing cost is low.

[0043] Because the center of gravity of the entire tooling will change when the rocket engine is flipped, a counterweight block 19 is provided on each motor mounting frame 16 for the stability of the entire tooling, and a lifting lug 18 is provided at the top center of the beam 11 for the convenience of lifting the entire tooling.

[0044] The adapter tooling includes an adapter frame 2, which is located between two rotating beams 14. The adapter frame 2 includes a cross center frame 21, and the end face of the cross center frame 21 is perpendicular to the axis of the rotating beam 14. Engine mounting frames 23 are vertically arranged at the four corners of the cross center frame 21, and a connecting frame 24 is arranged between two adjacent engine mounting frames 23. There are two connecting frames 24 and they are arranged opposite to each other. The connecting frame 24 is connected to the engine mounting frame 23 by bolts. The connecting frame 24 is connected to one end of the inner side surface of the rotating beam 14. In order to facilitate the installation and disassembly of the adapter frame 2, mounting plates 141 are respectively arranged at both ends of the inner side surface of the rotating beam 14. The connecting frame 24 is connected to the mounting plate 141 by bolts, so that a set of mounting plates 141 is provided as redundancy.

[0045] An engine mounting plate 22 is arranged at the center of the inner end surface of the cross center frame 21, and mounting holes are opened on the engine mounting plate 22 and the engine mounting frame 23. The end surface of the rocket engine is respectively connected to the mounting holes on the engine mounting plate 22 and the engine mounting frame 23 by bolts, so that the end surface of the rocket engine is connected to the engine mounting plate 22 and the engine mounting frame 23, and the outer end surface of the adapter frame 2 is connected to the thrust frame by bolts. When flipping, because the adapter frame 2 is rigidly connected to the rocket engine, when the flipping tool 1 drives the adapter frame 2 to rotate, the rocket engine can also rotate with it.

[0046] In order to improve the strength of the transfer tooling, Q304 steel is selected as its manufacturing material. The material properties of this material are shown in the following table:

[0047]

[0048] In order to ensure the structural strength of the entire transfer tooling, the transfer frame 2 is subjected to finite element analysis, and its finite element model is obtained through mesh division as follows: Figure 5 As shown;

[0049] When performing mechanical analysis on the adapter 2, it is necessary to load and constrain it according to the actual working conditions. The adapter 2 in this embodiment is mainly subjected to axial pressure, and its constraint is located at the hole position fixedly connected to the thrust frame. The force is located at the docking surface with the rocket engine, and its direction is along the horizontal direction of the thrust frame. The constraint and loading diagram obtained is as shown in Figure 6 The total displacement cloud map and stress cloud map obtained during the mechanical simulation are shown in Figure 7 and Figure 8As shown, from the results of mechanical simulation analysis, it can be seen that under the action of load, the maximum displacement of the entire adapter 2 is 0.047mm, which is less than the maximum deformation allowed during flipping (2mm), and its maximum stress is 60.4Mpa, which is less than the allowable stress during flipping (136.7Mpa). It can be seen that the adapter 2 of this embodiment not only provides a passing gap for the pipeline, but also its structural strength meets the strength and stiffness requirements of the rocket engine when it is flipped.

[0050] At the same time, the present invention also provides a method for flipping and hoisting a rocket engine, which uses the above-mentioned rocket engine flipping and hoisting tooling, and includes the following steps:

[0051] S1, start the flip motor 12, drive the chain 13 to rotate through the sprocket 131, so that the entire adapter frame 2 rotates 90 degrees, until the adapter frame 2 is located above the rotating beam 14, and the end surface of the adapter frame 2 is parallel to the horizontal plane;

[0052] S2, connecting the engine mounting plate 22 and the engine mounting frame 23 of the adapter frame 2 to the end surface of the rocket engine in a vertical posture;

[0053] S3, start the flip motor 12, drive the chain 13 to rotate in the opposite direction through the sprocket 131, and then flip the rocket engine 90° until the rocket engine is in a horizontal posture;

[0054] S4. The rocket engine is hoisted into the test cabin in a horizontal posture by connecting the hook of the crane with the lifting lug 18, and the adapter frame 2 is docked with the thrust frame.

[0055] S5. Conduct rocket engine tests;

[0056] S6. After the test is completed, the adapter frame 2 is disassembled from the thrust frame, and the rocket engine is hoisted outside the test cabin in a horizontal posture;

[0057] S7, start the flip motor 12, drive the chain 13 to rotate through the sprocket 131, flip the rocket engine 90°, and restore it to a vertical posture;

[0058] S8, remove the rocket engine from the engine mounting plate 22 of the transfer frame 2 and the engine mounting frame 23, and complete the flipping and hoisting of the rocket engine.

[0059] The embodiments described above are merely descriptions of specific implementation methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A rocket engine flip hoisting tool, characterized in that: It comprises a turning tool (1) and a transfer tool; The turning tool (1) comprises a crossbeam (11), a turning motor (12), a chain (13), a sprocket (131) and a rotating beam (14); the turning motor (12) has two parts and is arranged at two ends of the crossbeam (11); the output shafts of the two turning motors (12) are arranged opposite to each other and their axes are parallel to the axis of the crossbeam (11); the sprockets (131) have two parts and are respectively installed on the two output shafts; the chains (13) have two parts and are respectively meshed with the two sprockets (131); the rotating beams (14) have two parts and are located at the bottom of the crossbeam (11); the two ends of each rotating beam (14) are respectively vertically provided with a chain mounting frame (142); the bottom end of the chain mounting frame (142) is hinged to the rotating beam (14); and the two ends of the same chain (13) are respectively hinged to the top end of the chain mounting frame (142) arranged at the two ends of the same rotating beam (14); The transfer tooling comprises a transfer frame (2), the transfer frame (2) is located between two rotating beams (14), the transfer frame (2) comprises a cross center frame (21), an engine mounting plate (22) is arranged at the center of the inner end surface of the cross center frame (21), which is used to connect with the end surface of the rocket engine, the four corners of the cross center frame (21) are respectively vertically arranged with engine mounting frames (23), which are used to connect with the end surface of the rocket engine, and a connecting frame (24) is arranged between two adjacent engine mounting frames (23), the connecting frames (24) are two and are arranged oppositely, the connecting frames (24) are connected to one end of the inner side surface of the rotating beam (14), and the end surface of the cross center frame (21) is perpendicular to the axis of the rotating beam (14).

2. The rocket engine flip hoisting tool according to claim 1, characterized in that: The turning tool (1) further comprises a moving tool and a variable pitch motor (15); The movable tooling has two sets and is respectively arranged corresponding to two flip motors (12). Each set of the movable tooling comprises a motor mounting frame (16), a slide rail (17) and a lead screw nut device. The slide rail (17) is mounted on the cross beam (11) and the extension direction of the slide rail (17) is parallel to the extension direction of the cross beam (11). The motor mounting frame (16) and the slide rail (17) are slidably matched and the flip motor (12) is mounted on the motor mounting frame (16). The motor mounting frame (16) is connected to a nut in the lead screw nut device. The lead screw in the lead screw nut device is connected to an output shaft of a variable pitch motor (15) mounted on the cross beam (11). When the variable pitch motor (15) rotates, the two motor mounting frames (16) move synchronously toward or away from the center position of the cross beam (11).

3. The rocket engine flip hoisting tool according to claim 2, characterized in that: A mounting plate (141) is provided at one end of the inner side surface of the two rotating beams (14), and the connecting frame (24) is connected to the mounting plate (141) and the engine mounting frame (23) respectively by bolts.

4. The rocket engine flip hoisting tool according to claim 3, characterized in that: A mounting plate (141) is also provided at the other end of the inner side surface of the rotating beam (14).

5. The rocket engine flip hoisting tool according to claim 4, characterized in that: A lifting lug (18) is provided at the center of the top of the crossbeam (11).

6. The rocket engine flip hoisting tool according to claim 5, characterized in that: A counterweight block (19) is arranged on the motor mounting frame (16).

7. The rocket engine flip hoisting tool according to claim 1, characterized in that: The material of the transfer tooling is Q304 steel.

8. A method for turning over and hoisting a rocket engine, using the rocket engine turning over and hoisting tool as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, start the turning motor (12), drive the chain (13) to rotate through the sprocket (131), so that the entire adapter frame (2) rotates 90 degrees, until the adapter frame (2) is located above the rotating beam (14), and the end surface of the adapter frame (2) is parallel to the horizontal plane; S2, connecting the engine mounting plate (22) of the adapter frame (2) and the engine mounting frame (23) to the end surface of the rocket engine in a vertical posture; S3, starting the flip motor (12), driving the chain (13) to rotate in the opposite direction through the sprocket (131), thereby flipping the rocket engine 90 degrees until the rocket engine is in a horizontal posture; S4. Lift the rocket engine into the test cabin in a horizontal position, and dock the adapter frame (2) with the thrust frame; S5. Conduct rocket engine tests; S6. After the test is completed, the adapter frame (2) is disassembled from the thrust frame, and the rocket engine is hoisted in a horizontal position outside the test cabin; S7, starting the flip motor (12), driving the chain (13) to rotate via the sprocket (131), flipping the rocket engine 90 degrees, and restoring it to a vertical posture; S8, removing the rocket engine from the engine mounting plate (22) and the engine mounting frame (23) of the transfer frame (2), and completing the overturning and hoisting of the rocket engine.

9. The method for flipping and hoisting a rocket engine according to claim 8, characterized in that: Step S4 specifically comprises: connecting the hook of the crane with the lifting lug (18), lifting the rocket engine into the test cabin in a horizontal posture, and docking the adapter frame (2) with the thrust frame.

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