Large-size parallel rocket engine combined assembling device and using method

Abstract

The invention discloses a large-size parallel rocket engine combined assembling device and a using method. The large-size parallel rocket engine combined assembling device is mainly composed of a rack reinforcing ring, a supporting adjusting device, an engine posture adjusting trolley and a profiling operation platform. According to the invention, the rack reinforcing ring is used as a parallel engine assembling reference, and after the rack reinforcing ring is overhead at a proper height through the support adjusting device, the butt joint posture of the engine posture adjusting trolley is adjusted to realize parallel butt joint of single engines one by one. After the parallel butt joint, the profiling operation platform is spliced to realize the high-altitude operation of an operator. According to the parallel rocket engine combined assembly device and the using method, through reasonable structural design and process design, it is ensured that the engine parallel assembly process is accurate, stable and reliable, the parallel butt joint efficiency and butt joint quality of single engines are remarkably improved, and the parallel rocket engine combined assembly device has the beneficial effects of being convenient and reliable to operate and high in practicability.

Description

Technical Field

[0001] The invention relates to a process equipment for parallel assembly of engines, in particular to a combined assembly device required for parallel assembly of large-size engines. Background Art

[0002] Liquid rocket engines are usually assembled upright, that is, the thrust chamber nozzle faces downward, and the rocking device, frame and other components are assembled step by step from bottom to top. At this time, the thrust chamber nozzle is seated on the ground, and no additional auxiliary support device is required. As the thrust of rocket engines increases, the number of parallel engines gradually increases. In the state of parallel assembly, a single engine is no longer assembled in a vertical state, but has an eccentric deviation angle, which cannot be directly seated on the ground, and cannot meet the requirements of multiple engine suspension inspections and tests; at the same time, in the state of multiple engines in parallel, the assembly mode with the engine as the "stator" and the frame as the "mover" is obviously very difficult. Summary of the invention

[0003] The technical problem solved by the present application is: to overcome the deficiencies of the prior art, to provide a large-size parallel rocket engine combined assembly device and a method of use, and to design and manufacture a fixing device, a supporting device, an attitude adjustment device, and an operating platform based on the assembly idea of ​​the engine suspended parallel assembly to realize the operation process of the engine suspended parallel.

[0004] For the assembly of parallel rocket engines, an idea is proposed to achieve suspended parallel connection of engines through a set of combined assembly devices, that is, to suspend the engine frame in the air and dock each engine with the frame independently. After the docking is completed, the parallel engines are in a suspended state, and relevant inspections and tests can be carried out; after parallel docking, a more comfortable working height is provided for the operators by splicing the working platform to avoid the greater risk of falling when climbing the engine or ladder; after the assembly is completed, the engine is loaded and transported together with the assembly device (frame reinforcement ring).

[0005] The technical solutions provided by this application are as follows:

[0006] In the first aspect, a large-size parallel rocket engine combination assembly device is disclosed, including a frame reinforcement ring, a support adjustment device, an engine attitude adjustment trolley and a contoured operating platform; the frame reinforcement ring is connected to the top of multiple support adjustment devices, and the frame reinforcement ring is used to fix the engine frame; the engine attitude adjustment trolley is used to transport the engine body to the bottom of the engine frame, adjust the attitude of the engine body and drive the engine body to move upward; after the engine body is docked and connected to the engine frame, the contoured operating platform is installed on the support adjustment device to form an operating platform.

[0007] The frame reinforcement ring includes an annular body, which is a polygonal annular structure. The upper inner end of the annular body is connected to an engine connecting plate, which is used to install the engine frame. The lower outer end of the annular body is connected to a support device connecting plate, which is used to connect the support adjustment device.

[0008] The support adjustment device includes multiple groups of triangular pyramid structures, each group of triangular pyramid structures includes a fixed ladder, a transition ladder and a support ladder connected in sequence from bottom to top, the support ladder includes a support body and a threaded shaft, one end of the threaded shaft is vertically slidably connected to the support body, and the other end is connected to the frame reinforcement ring, so that the height of the support ladder is adjustable.

[0009] The supporting body includes a bracket, a rotating sleeve, a thrust bearing and a threaded sleeve. One end of the bracket is fixedly connected to the transition ladder, and the other end is connected to the middle cylinder. The threaded shaft is inserted into the middle cylinder, and the threaded shaft and the middle cylinder move along the axial direction of the middle cylinder. The threaded sleeve is threadedly connected to the outside of the threaded shaft, and the threaded sleeve is located above the middle cylinder. The thrust bearing is sleeved outside the threaded shaft and between the threaded sleeve and the middle cylinder. The rotating sleeve is sleeved outside the threaded shaft. A force handle is connected to the outside of the rotating sleeve, and a reversing mechanism is arranged between the force handle and the threaded sleeve. The rotation of the rotating sleeve drives the threaded sleeve to rotate through the reversing mechanism, and the rotation of the threaded sleeve drives the threaded shaft to move vertically up and down.

[0010] A support shaft is connected to the top of the threaded shaft, and the support shaft is used to connect the frame reinforcement ring. The outer circumferential surface of the threaded shaft is provided with a mounting ring groove. The outer circumferential surface of the threaded shaft from the mounting ring groove to the top part of the threaded shaft is a connecting thread section with an external thread. One end of the support shaft is provided with a connecting groove, and the connecting groove includes an internal thread section and a second chamber that gradually approaches the other end of the support shaft. The inner diameter of the internal thread section is smaller than the inner diameter of the second chamber. The inner wall surface of the internal thread section is provided with an internal thread that matches the connecting thread section. The internal thread section is screwed through the connecting thread section of the threaded shaft and is located in the mounting ring groove, so that the threaded shaft and the support shaft are clearance-fitted; the support shaft is threadedly connected with a locking nut.

[0011] The reversing mechanism includes a rotating shaft seat, a rotating shaft and a rotating baffle. The rotating shaft seat is connected to the upper surface of the force applying handle. The rotating shaft seat is rotatably connected to the rotating baffle through the rotating shaft. The outer shape of the threaded sleeve is processed with multiple tooth grooves. There is a clamping part on each side of the rotating baffle. The clamping part is an inclined surface on the side facing the rotating shaft. The inclined surface gradually moves away from the rotating shaft along the direction in which the two clamping parts are separated. By rotating the rotating baffle, the clamping parts on both sides of the rotating baffle can be respectively clamped in the tooth grooves on both sides of the rotating shaft.

[0012] The engine attitude adjustment trolley comprises a base, a bottom slide, an upper slide, a turntable and a support column. The height of the support column is adjustable. A plurality of support columns are provided, and the plurality of support columns are connected to the base to adjust the inclination angle of the base and drive the base to move up and down. The bottom slide is located on the upper surface of the base and is horizontally slidably connected to the base along the X direction. The upper slide is located on the upper surface of the bottom slide and is slidably connected to the bottom slide along the Y direction. The turntable is rotatably connected to the upper surface of the upper slide. The X direction is perpendicular to the Y direction, and the rotation axis of the turntable is perpendicular to the X direction and the Y direction.

[0013] A plurality of supporting wheels are connected to the edge of the lower surface of the turntable, and the supporting wheels are in contact with the surface of the upper slide.

[0014] The contour-copying operating platform includes a plurality of split platforms, the number of which is the same as the number of triangular pyramid structures, and each split platform is installed between two adjacent triangular pyramid structures; each split platform includes an aluminum alloy bracket, a fixed pedal, a flip pedal and a movable caster, the movable caster is installed at the bottom of the aluminum alloy bracket, the aluminum alloy bracket is provided with a locking device for locking the movable caster, the fixed pedal is fixedly connected to the top of the aluminum alloy bracket, and the two ends of the top of the aluminum alloy bracket are rotatably connected to a flip pedal; when the contour-copying operating platform is in an idle state, the flip pedal is rotated to a vertical state, and after the aluminum alloy bracket is spliced ​​between two adjacent triangular pyramid structures, the flip pedal is rotated downward and rests on the upper end surface of the transition ladder of the support adjustment device, and is connected and fixed.

[0015] In a second aspect, a method for using a large-scale parallel rocket engine assembly device is disclosed, comprising:

[0016] Lift the engine frame and connect and tighten the engine frame to the frame reinforcement ring;

[0017] Pre-adjust the four support adjustment devices and place them at the four quadrants of the engine;

[0018] Lift the frame reinforcement ring and engine frame as a whole, connect the frame reinforcement ring with the four supporting adjustment devices and tighten them;

[0019] Place the engine body on the turntable of the engine posture adjustment trolley;

[0020] Push the engine posture adjustment trolley to the bottom of the engine frame, adjust the posture of the engine body through the engine posture adjustment trolley 3 and dock the engine body with the engine frame;

[0021] Remove the engine posture adjustment trolley, assemble the contoured operating platform and connect and tighten it;

[0022] The operator works at a height on the contoured operating platform to assemble the engine and obtain the assembled engine;

[0023] After the assembly is completed, the frame reinforcement ring and the engine are lifted as a whole, and after the frame reinforcement ring and the transport box are connected and fastened, they are loaded onto a truck for transportation.

[0024] In summary, this application at least includes the following beneficial technical effects:

[0025] 1. The engine frame is suspended at an appropriate height through the frame reinforcement ring and support adjustment device. The frame is used as the assembly reference, and the engines are assembled one by one. This can reduce the difficulty of assembly and ensure the posture and position of the parallel engines for subsequent testing and inspection.

[0026] 2. The suspended engine assembly can put the engine in a suspended state, so that the thin-walled engine thrust chamber is no longer in contact with the ground, avoiding deformation of the nozzle due to its heavy weight.

[0027] 3. The engine posture adjustment trolley can be used to lift the engine and make it stay at any height, position and angle within the required range, with good fine-tuning capability. Its operational stability and convenience are much higher than the engine docking by hoisting method.

[0028] 4. The contoured operating platform designed in the present invention provides the operator with a suitable assembly operating height. By tightly surrounding the outer contour of the parallel engine after docking, the operator can be as close to the engine assembly area as possible, avoiding the risk of falling during torque tightening, catheter preparation and inspection and testing, thereby improving the convenience and comfort of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Assembly drawings of the frame reinforcement ring, support adjustment device and engine attitude adjustment trolley;

[0030] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 3 It is a structural schematic diagram of the frame reinforcement ring of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the support and adjustment device of the present invention;

[0033] Figure 5 It is a structural schematic diagram of a support ladder in a support adjustment device of the present invention;

[0034] Figure 6 Figure a is a schematic diagram of the structure of the reversing mechanism, and Figure b is a schematic diagram of the cooperation between the rotating baffle and the tooth groove;

[0035] Figure 7 It is a structural schematic diagram of the engine posture adjustment vehicle of the present invention;

[0036] Figure 8 It is a structural schematic diagram of the contour-profiling operating platform of the present invention.

[0037] Explanation of the attached figures: 1. Frame reinforcement ring; 2. Support adjustment device; 3. Engine posture adjustment trolley; 4. Profiling operation platform;

[0038] 11. Ring body; 12. Engine connection plate; 13. Support device connection plate; 14. Safety fence; 15. Safety rope connection plate;

[0039] 21. Fixed ladder; 22. Transition ladder; 23. Support ladder;

[0040] 231, bracket; 232, threaded shaft; 233, rotating sleeve; 2331, force application handle; 2332, rotating shaft seat; 2333, rotating shaft; 2334, rotating baffle; 234, thrust bearing; 235, threaded sleeve; 2351, tooth groove; 236, supporting shaft; 237, locking nut;

[0041] 31. Forklift connecting plate; 32. Base; 33. Bottom slide; 34. Upper slide; 35. Turntable; 36. Support column; 37. Control console;

[0042] 41. Aluminum alloy bracket; 42. Fixed pedal; 43. Flip pedal; 44. Mobile casters; 45. Locking device. DETAILED DESCRIPTION

[0043] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments disclosed in the present invention will be further described in detail below with reference to the accompanying drawings.

[0044] The present application discloses a large-scale parallel rocket engine assembly device, which is suitable for large-scale multi-machine parallel rocket engines. Due to the engine's own state and assembly process constraints, the engine cannot be placed on the ground during the assembly process and needs to be suspended for assembly. Figure 1 and Figure 2 As shown, its structure mainly consists of four parts: frame reinforcement ring 1, support adjustment device 2, engine posture adjustment trolley 3, and contour operation platform 4. With frame reinforcement ring 1 as the parallel engine assembly reference, after the frame reinforcement ring 1 is suspended at an appropriate height through the support adjustment device 2, the docking posture of the engine posture adjustment trolley 3 is adjusted to achieve parallel docking of engines one by one. After parallel docking, the contour operation platform 4 is assembled to enable the operator to work at high altitude. Among them:

[0045] like Figure 3As shown, the main body of the frame reinforcement ring 1 is made of rectangular square tubes welded together, which is used to connect and fix the engine (or frame) and improve the rigidity of the engine frame. Its main body is welded together: an annular main body 11, an engine connecting plate 12, a supporting device connecting plate 13, a safety fence 14, and a safety rope connecting plate 15. After welding, the gantry frame has various docking dimensions. The annular body 11 is a polygonal annular structure made of rectangular square tubes welded together. The engine connecting plate 12 and the supporting device connecting plate 13 are respectively welded to the upper and lower end surfaces of the annular body 11. The engine connecting plate 12 is used to fix the engine frame; the supporting device connecting plate 13 is used to connect the supporting adjustment device 2 when the engines are assembled in parallel, and is used to connect the transport box when the engine is transported as a whole; the safety fence 14 is installed at the upper end of the frame reinforcement ring 1, and a tool box is set on the safety fence 14, which is used to prevent operators and tools from falling from a high altitude and causing injuries when the engines are assembled in parallel. The safety fence is dismantled during transportation to reduce the height of the transported goods; the safety rope connecting plate 15 is installed on the side of the frame reinforcement ring 1, and the other end is connected to the operator to avoid and reduce the risk of falling from a high altitude and injuries.

[0046] like Figure 4 As shown, the support adjustment device 2 is a triangular pyramid structure, which is used to support the frame reinforcement ring 1. Each group has 4 pieces, which are distributed in four quadrants when in use. The frame reinforcement ring 1 is leveled through the ratchet structure, so that the parallel engine mounted on the frame reinforcement ring 1 remains horizontal. The support adjustment device 2 mainly consists of a fixed ladder 21, a transition ladder 22, and a support ladder 23. Among them, the fixed ladder 21, the transition ladder 22, and the support ladder 23 are welded with foot pedals on the outside for manual climbing; the fixed ladder 21 is the basis of the support adjustment device 2, supporting the transition ladder 22 and the support ladder 23 on the top, supporting the ground on the bottom, and setting a crossbeam at an appropriate height for forklifts to carry and turn around; the transition ladder 22 supports the support ladder 23 on the top, and is connected to the fixed ladder 21 on the bottom. When in use, the transition ladder 22 of different specifications can be replaced according to the assembly height requirements of the parallel engine; the support ladder 23 supports the frame reinforcement ring 1 on the top, and is connected to the transition ladder 22 on the bottom, and its own support height can be adjusted through the ratchet device.

[0047] like Figure 5 , Figure 6As shown in Figures a and b, the main structure of the support ladder 23 consists of: a bracket 231, a threaded shaft 232, a rotating sleeve 233, a thrust bearing 234, a threaded sleeve 235, a support shaft 236, and a locking nut 237. A force handle 2331 and a reversing mechanism are respectively provided on the outer side and the upper end of the rotating sleeve 23 to achieve the raising and lowering of the height of the support ladder 23. One end of the bracket 231 is fixedly connected to the transition ladder 22, and the other end is connected to the middle cylinder. The threaded shaft 232 is inserted into the middle cylinder, and the threaded shaft 232 and the middle cylinder move along the axial direction of the middle cylinder. The threaded sleeve 235 is threadedly connected to the outside of the threaded shaft 232, and the threaded sleeve 235 is located above the middle cylinder. The thrust bearing 234 is sleeved on the outside of the threaded shaft 232 and is located between the threaded sleeve 235 and the middle cylinder. The rotating sleeve 233 is sleeved on the outside of the threaded shaft 232. The reversing mechanism includes a rotating shaft seat 2332, a rotating shaft 2333 and a rotating baffle 2334. The force application handle 233 1 is fixedly connected to the outer wall of the rotating sleeve 233, and a rotating shaft seat 2332 is arranged on the upper surface of the force application handle 2331. The rotating shaft seat 2332 is rotatably connected to a rotating baffle 2334 through the rotating shaft 2333. There is a snap-in portion on each side of the rotating baffle 2334. The outer shape of the threaded sleeve 235 is processed with a plurality of tooth grooves 2351. By rotating the rotating baffle 2334, the snap-in portions on both sides of the rotating baffle 2334 can be snapped into the tooth grooves on both sides of the rotating shaft 2333 respectively. The snap-in portion is inclined toward the rotating shaft 2333. The inclined surface gradually moves away from the rotating shaft 2333 along the direction in which the two snap-in portions depart from each other. The rotating baffle 2334 is moved to the position where the rotating baffle 2334 is moved to the position where the rotating shaft 23 ... Figure 6 When the rotating sleeve 233 is in the position shown, the rotating sleeve 233 rotates clockwise, the rotating baffle 2334 slips off the tooth groove, the rotating sleeve 233 rotates counterclockwise, the rotating baffle 2334 pushes the threaded sleeve 235 to rotate clockwise, so that the threaded shaft 232 moves upward or downward; when the rotating baffle 2334 is moved to the other side, the rotating sleeve 233 rotates counterclockwise, the rotating baffle 2334 slips off the tooth groove, the rotating sleeve 233 rotates clockwise, the rotating baffle 2334 pushes the threaded sleeve 235 to rotate clockwise, so that the threaded shaft 232 and the rotating baffle 2334 are moved to the Figure 6 The movement direction in the position shown is opposite. Through the above arrangement, the rotation of the rotating sleeve 233 drives the thrust bearing 234 to rotate, and the rotation of the thrust bearing 234 drives the threaded shaft 232 to move vertically up and down.

[0048] The outer circumferential surface of the threaded shaft 232 is provided with a mounting groove, and the outer circumferential surface of the threaded shaft 232 is a connecting thread section with external threads from the mounting groove of the threaded shaft 232 to the top part of the threaded shaft 232. The outer diameter of the connecting thread section is larger than the outer diameter of the threaded shaft 232 at the mounting groove position. A connecting groove is provided at one end of the support shaft 236, and the connecting groove includes an internal thread section gradually approaching the other end of the support shaft 236 and a second chamber. The inner diameter of the internal thread section is smaller than the inner diameter of the second chamber. The inner wall surface of the internal thread section is provided with an internal thread that matches the connecting thread section. The internal thread section is screwed through the connecting thread section of the threaded shaft 232 and is located in the mounting groove, and the width of the mounting groove is smaller than the height of the second chamber. When the internal thread section is located in the mounting groove, there is a clearance fit between the support shaft 236 and the threaded shaft 232. When docking, the support shaft 236 can be shaken to fine-tune the position. After the support shaft 236 passes through the support device connecting plate 13 connected to the frame reinforcement ring 1 , the locking nut 237 is tightened onto the support shaft 236 , thereby fixing the support ladder 23 to the frame reinforcement ring 1 .

[0049] like Figure 7As shown, the engine posture adjustment trolley 3 has a structure consisting of a forklift connecting plate 31, a base 32, a bottom slide 33, an upper slide 34, a turntable 35, a support column 36, and a control console 37. The forklift connecting plate 31 is integrated with the base 32 for the overall turnover of the engine posture adjustment trolley 3; the bottom slide 33 and the upper slide 34 are used to adjust the horizontal dimensions in the X / Y directions during the engine docking process, the X direction is perpendicular to the Y direction, the bottom slide 33 is located on the upper surface of the base 32 and is horizontally slidably connected to the base 32 along the X direction, and the upper slide 34 is located on the upper surface of the bottom slide 33 and is slidably connected to the bottom slide 33 along the Y direction; the turntable 35 is used to adjust the C-direction during the engine docking process, the turntable 35 is rotatably connected to the upper surface of the upper slide 34, and the rotation axis of the turntable 35 is perpendicular to the X direction and the Y direction; 4 support columns 36 are arranged, and the 4 support columns 36 are evenly distributed and connected to the edge positions of the base 32. The support columns 36 and the control console 37 are hydraulic systems to make the height of the support columns 36 adjustable. Through the operation of the control console, the support columns 36 can be linked or moved separately to achieve Z-direction height adjustment and A-direction pitch adjustment during the engine docking process. The turntable 35 (the top turntable) is a rotating disk. During the engine installation process, it can be adjusted in the forward and reverse direction according to the actual angle (C direction). After the engine is pre-aligned, the first turntable can be positioned by the locking device, and then the next step can be carried out; the bottom slide 33 and the upper slide 34 are displacement adjustment platforms in the X and Y directions respectively. Linear guides are used to determine the displacement path, and screws are used as displacement power. The forward and reverse rotation hand wheels are used to adjust the displacement lengths in the X and Y directions. The amount of displacement is visually determined according to the docking conditions. The trolley support column 36 and the control console 37 are 4 sets of cylinders and 1 set of hydraulic control units, which provide power for vertical lifting (Z direction) and angle adjustment (A angle). The cylinders are located at the four corners of the tooling, and four-way independent manual reversing valves are used to realize independent lifting of the cylinders. During the docking process of the workpieces, the holes are aligned by visual inspection. The cylinders have their own stroke scales to facilitate the calculation of relative positions. In order to achieve the requirements of safe docking and installation accuracy and ensure reliable and stable operation under extreme conditions of full load and maximum inclination angle, a plurality of support wheels are designed at the edge of the lower surface of the turntable 35. The support wheels are in contact with the surface of the upper slide 34 so that the turntable 35 is subjected to distributed force.

[0050] like Figure 8As shown, the contoured operating platform 4 surrounds the parallel engine and is used for operators to perform high-altitude operations. The contoured operating platform 4 includes four split platforms. When the contoured operating platform 4 is idle, it is in a split structure. After the parallel assembly process of the engine is completed, the four split platforms are assembled and connected and fixed to the support adjustment device 2 to form a stable structure. The main structure of each split platform consists of: an aluminum alloy bracket 41, a fixed pedal 42, a flip pedal 43, a movable caster 44, and a locking device 45. There are 4 aluminum alloy brackets 41 of all split platforms, and their inner profiles are manufactured according to the size of the engine after parallel connection, and the height and external dimensions are coordinated and determined according to the engine assembly operation requirements; the fixed pedal 42 is fixedly connected to the top of the aluminum alloy bracket 41, and the two ends of the top of the aluminum alloy bracket 41 are respectively connected to a flip pedal 43, and when the profiling operation platform 4 is idle, the flip pedal 43 rotates to a vertical state; after the aluminum alloy bracket 41 is assembled in place, the flip pedal 43 rotates downward and rests on the upper end surface of the transition ladder 22 in the support adjustment device 2, and is connected and fixed. After the connection, the four aluminum alloy brackets 41 are assembled into a whole, and the fixed pedal 42 and the flip pedal 43 above form a flat operating plane for the operator to move freely. The movable caster 44 is connected to the bottom of the aluminum alloy bracket 41 to facilitate the pushing of the aluminum alloy bracket 41, and the locking device 45 is used to lock the movable caster 44 after the aluminum alloy bracket 41 is moved into place, so that the position of the aluminum alloy bracket 41 is fixed.

[0051] A method for using a large-size parallel rocket engine assembly device comprises the following steps:

[0052] Lift the engine frame and connect and tighten the engine frame to the frame reinforcement ring 1;

[0053] Pre-adjust the four support adjustment devices 2 and place the support adjustment devices 2 at the four quadrants of the engine;

[0054] Lift the frame reinforcement ring 1 and the engine frame as a whole, dock and tighten them with the four supporting adjustment devices 2;

[0055] Lift the engine body and place it on the turntable of the engine posture adjustment trolley 3;

[0056] Push the engine posture adjustment trolley 3 into the support range of the four-way support adjustment device 2 (below the engine frame);

[0057] Adjust the posture of the engine body by using the engine posture adjustment trolley 3 and connect the engine body with the engine frame;

[0058] Remove the engine posture adjustment trolley 3, assemble the contour operation platform 4 and connect and tighten;

[0059] The operator works at a height on the contoured operating platform 4 to assemble the engine and obtain the assembled engine; wherein the engine assembly work includes the configuration and connection of the conduit, the connection of the gas cylinder, etc.;

[0060] After the assembly is completed, the frame reinforcement ring 1 and the engine are hoisted as a whole, and after the frame reinforcement ring 1 is connected and fastened to the transport box, it is loaded on a truck for transportation.

[0061] The contents not described in detail in this application specification belong to the common knowledge of those skilled in the art.

[0062] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A large-scale parallel rocket engine assembly device, Features: The invention comprises a frame reinforcement ring (1), a support adjustment device (2), an engine posture adjustment trolley (3) and a contour operation platform (4); the frame reinforcement ring (1) is connected to the top of a plurality of support adjustment devices (2), and the frame reinforcement ring (1) is used to fix the engine frame; the engine posture adjustment trolley (3) is used to transport the engine body to the bottom of the engine frame, adjust the posture of the engine body and drive the engine body to move upward; After the engine body is butt-jointed with the engine frame, the contoured operating platform (4) is installed on the supporting and adjusting device (2) to form an operating platform.

2. A large-size parallel rocket engine assembly device according to claim 1, Features: The frame reinforcement ring (1) comprises an annular body (11), the annular body (11) is a polygonal annular structure, the inner upper end of the annular body (11) is connected to an engine connection plate (12), the engine connection plate (12) is used to install the engine frame, and the outer lower end of the annular body (11) is connected to a support device connection plate (13), the support device connection plate (13) is used to connect the support adjustment device (2).

3. A large-size parallel rocket engine assembly device according to claim 1, Features: The support adjustment device (2) comprises a plurality of groups of triangular pyramid structures, each group of triangular pyramid structures comprises a fixed ladder (21), a transition ladder (22) and a support ladder (23) connected in sequence from bottom to top, the support ladder (23) comprises a support body and a threaded shaft (232), one end of the threaded shaft (232) is vertically slidably connected to the support body, and the other end is connected to the frame reinforcement ring (1), so that the height of the support ladder (23) is adjustable.

4. A large-size parallel rocket engine assembly device according to claim 3, Features: The support body comprises a bracket (231), a rotating sleeve (233), a thrust bearing (234) and a threaded sleeve (235); one end of the bracket (231) is fixedly connected to the transition ladder (22), and the other end is connected to the middle cylinder; the threaded shaft (232) is inserted into the middle cylinder, and the threaded shaft (232) and the middle cylinder move along the axis direction of the middle cylinder; the threaded sleeve (235) is threadedly connected to the outside of the threaded shaft (232), and the threaded sleeve (235) is located above the middle cylinder; the thrust bearing (234) and the threaded sleeve (235) are connected to the outside of the threaded shaft (232). (234) is sleeved outside the threaded shaft (232) and is located between the threaded sleeve (235) and the middle cylinder. The rotating sleeve (233) is sleeved outside the threaded shaft (232). The outer side of the rotating sleeve (233) is connected with a force handle (2331). A reversing mechanism is provided between the force handle (2331) and the threaded sleeve (235). The rotating sleeve (233) rotates to drive the threaded sleeve (235) to rotate through the reversing mechanism. The rotation of the threaded sleeve (235) drives the threaded shaft (232) to move vertically up and down.

5. A large-size parallel rocket engine assembly device according to claim 3, Features: The top of the threaded shaft (232) is connected to a support shaft (236), and the support shaft (236) is used to connect to the frame reinforcement ring (1). The outer circumferential surface of the threaded shaft (232) is provided with a mounting ring groove. The portion from the mounting ring groove of the threaded shaft (232) to the top portion of the threaded shaft (232) is a connecting thread section with an external thread on the outer circumferential surface. One end of the support shaft (236) is provided with a connecting groove, and the connecting groove includes an internal thread section gradually approaching the other end of the support shaft (236) and a second chamber. The inner diameter of the internal thread section is smaller than the inner diameter of the second chamber. The inner wall surface of the internal thread section is provided with an internal thread that matches the connecting thread section. The internal thread section is screwed through the connecting thread section of the threaded shaft (232) and is located in the mounting ring groove, so that the threaded shaft (232) and the support shaft (236) are clearance-matched. The support shaft (236) is threadedly connected with a locking nut (237).

6. A large-size parallel rocket engine assembly device according to claim 3, Features: The reversing mechanism comprises a rotating shaft seat (2332), a rotating shaft (2333) and a rotating baffle (2334); the rotating shaft seat (2332) is connected to the upper surface of the force applying handle (2331); the rotating shaft seat (2332) is rotatably connected to the rotating baffle (2334) via the rotating shaft (2333); the threaded sleeve (235) is processed with a plurality of tooth grooves (2351); two sides of the rotating baffle (2334) are respectively provided with a snap-in portion; the side of the snap-in portion facing the rotating shaft (2333) is an inclined surface; the inclined surface gradually moves away from the rotating shaft (2333) along the direction in which the two snap-in portions are separated; and the snap-in portions on both sides of the rotating baffle (2334) can be respectively snapped into the tooth grooves on both sides of the rotating shaft (2333) by rotating the rotating baffle (2334).

7. A large-size parallel rocket engine assembly device according to claim 1, Features: The engine attitude adjustment trolley (3) comprises a base (32), a bottom slide (33), an upper slide (34), a turntable (35) and a support column (36). The height of the support column (36) is adjustable. A plurality of support columns (36) are provided. The plurality of support columns (36) are connected to the base (32) to adjust the inclination angle of the base (32) and drive the base (32) to move up and down. The bottom slide (33) is located on the upper surface of the base (32) and is horizontally slidably connected to the base (32) along the X direction. The upper slide (34) is located on the upper surface of the bottom slide (33) and is slidably connected to the bottom slide (33) along the Y direction. The turntable (35) is rotatably connected to the upper surface of the upper slide (34). The X direction is perpendicular to the Y direction. The rotation axis of the turntable (35) is perpendicular to the X direction and the Y direction.

8. A large-scale parallel rocket engine assembly device according to claim 7, Features: A plurality of supporting wheels are connected to the edge of the lower surface of the rotating disk (35), and the supporting wheels are in contact with the surface of the upper slide (34).

9. A large-scale parallel rocket engine assembly device according to claim 3, Features: The contour-matching operating platform (4) comprises a plurality of split platforms, the number of which is the same as the number of triangular pyramid structures, and each split platform is installed between two adjacent triangular pyramid structures; each split platform comprises an aluminum alloy bracket (41), a fixed pedal (42), a flip pedal (43) and a movable caster (44); the movable caster (44) is installed at the bottom of the aluminum alloy bracket (41); the aluminum alloy bracket (41) is provided with a locking device (45) for locking the movable caster (44); the fixed pedal (42) is fixedly connected to the top of the aluminum alloy bracket (41); and the two ends of the top of the aluminum alloy bracket (41) are each rotatably connected to a flip pedal (43); when the contour-matching operating platform (4) is in an idle state, the flip pedal (43) is rotated to a vertical state; after the aluminum alloy bracket (41) is spliced ​​between two adjacent triangular pyramid structures, the flip pedal (43) is rotated downward and rests on the upper end surface of the transition ladder (22) supporting the adjustment device (2), and is connected and fixed.

10. A method for using a large-size parallel rocket engine assembly device according to any one of claims 1 to 9, It is characterized in that include: Lifting the engine frame, and connecting and fastening the engine frame to the frame reinforcement ring (1); Pre-adjust four support adjustment devices (2), and place the support adjustment devices (2) at four quadrants of the engine; The frame reinforcement ring (1) and the engine frame are hoisted as a whole, and the frame reinforcement ring (1) is docked with the four supporting adjustment devices (2) and fastened; Place the engine body on the turntable of the engine posture adjustment trolley (3); Push the engine posture adjustment trolley (3) to the bottom of the engine frame, adjust the posture of the engine body through the engine posture adjustment trolley 3 and dock the engine body with the engine frame; Remove the engine posture adjustment trolley (3), assemble the contour operation platform (4) and connect and tighten; An operator works at a height on the contoured operating platform (4) to assemble the engine and obtain an assembled engine; After the assembly is completed, the frame reinforcement ring (1) and the engine are hoisted as a whole, and after the frame reinforcement ring (1) is connected and fastened to the transport box, it is loaded on a truck for transportation.

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