An apparatus for assembling a first stage engine of a launch vehicle

Abstract

This invention discloses a device for assembling the first-stage engine of a launch vehicle, relating to the field of launch vehicle assembly technology, and specifically for assembling the first-stage engine of a launch vehicle. The device includes a lifting mechanism for hoisting workpieces and an adapter trolley for transferring workpieces. The lifting mechanism includes a lifting assembly for raising and lowering the workpieces and a rotating assembly for assembling the rocket engine. The adapter trolley is equipped with an attitude adjustment mechanism, which includes an elastic adjustment assembly, a horizontal adjustment assembly, a rotation angle adjustment assembly, and a lateral movement adjustment assembly. This invention, through the coordination of the lifting mechanism, the adapter trolley, and the track, achieves the functional requirements of transferring, adjusting the attitude of, and assembling various workpieces of the launch vehicle, greatly improving the efficiency of first-stage engine assembly for commercial aerospace launch vehicles. Simultaneously, its simple structural design facilitates operation and reduces the workload of staff.

Description

Technical Field

[0001] This invention belongs to the field of launch vehicle assembly technology, specifically to a device for assembling a first-stage engine of a launch vehicle. Background Technology

[0002] With the rapid development of commercial spaceflight, the demand for rocket launch missions is constantly expanding. Large commercial launch vehicle technology is gradually becoming more cost-effective and modular, while simultaneously placing higher demands on launch vehicle assembly efficiency, aiming to significantly shorten the launch vehicle production cycle. Current commercial spaceflight assembly technology mostly employs manual hoisting for launch vehicle engine assembly. This is due to the characteristics of launch vehicle engines, such as their large weight and size, high assembly precision requirements, differences in the installation angles between the central and peripheral engines, complex shapes of assembled parts, and the need for precise adjustment of the workpiece's degrees of freedom.

[0003] The manual hoisting method for installing engines has several drawbacks, including low assembly efficiency, long time required for precise docking, a high risk of collisions during assembly, difficulty in adjusting the engine angle after hoisting, and an inability to easily avoid the launch vehicle's annular tail section. These issues severely impact the production efficiency of commercial space launch vehicles. Furthermore, existing methods for addressing the need for precise multi-degree-of-freedom adjustments in launch vehicle engine assembly often employ multiple displacement and attitude adjustment modules. These modules are used to adjust the engine's assembly position via a control module. However, this additional control and calculation module increases the manufacturing cost.

[0004] Therefore, there is a need to provide a device for assembling the first stage engine of a launch vehicle that can solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a device for assembling the first-stage engine of a launch vehicle, which solves the problems of low assembly efficiency of various components in existing launch vehicles, inability to perform attitude adjustment and multi-degree-of-freedom adjustment during hoisting, and easy collision.

[0006] The technical solution adopted in this invention is as follows: a device for assembling a first-stage engine of a launch vehicle, comprising a lifting mechanism for hoisting workpieces and an adapter trolley for transferring workpieces; the lifting mechanism includes a lifting component for lifting and lowering workpieces and a slewing component for assembling the rocket engine; the adapter trolley is provided with an attitude adjustment mechanism, which includes an elastic adjustment component, a horizontal adjustment component, a slewing angle adjustment component and a lateral movement adjustment component.

[0007] Preferably, the lifting assembly includes a support column, a lifting platform, a power transmission rod, a fastening nut, a reversing support seat, a power reversing device, a splitter, a motor, a power transmission shaft, a transmission gear, a transmission nut sleeve, and a transmission screw.

[0008] Preferably, both sides of the lifting platform are slidably engaged with support columns. A motor is installed on the lifting platform, and a distributor for converting motor power into horizontal power is installed at the output end of the motor. The distributor is fixed to the lifting platform. A power transmission rod is installed at the output interface of the distributor. A power commutator for converting horizontal power into vertical power is installed at the end of the power transmission rod. The power commutator is fixed to the lifting platform via a commutator support seat. A power transmission shaft is installed at the output interface of the power commutator. The power transmission shaft is rotatably connected to the lifting platform via a bearing, and a transmission gear is installed at its end. The transmission gear meshes with a transmission nut sleeve, and the transmission nut sleeve is engaged with a transmission screw. The transmission screw is installed on the inner wall of the support column by a fastening nut.

[0009] Preferably, the rotary assembly includes a connecting flange, a rotary motor, a shaped rotary disc, and lifting buckles; the shaped rotary disc is installed on the lifting platform, the wedge-shaped groove of the shaped rotary disc engages with the upper part of the connecting flange, the connecting flange is bolted to the rocket transition section, a plurality of lifting buckles are installed on the connecting flange, and a rotary motor for driving the shaped rotary disc to rotate is installed below one of the wedge-shaped grooves of the shaped rotary disc.

[0010] Preferably, the outer wall of the reversing support is equipped with a follow-up protective cover.

[0011] Preferably, the adapter trolley further includes a support plate that bears the load, and a base frame with support wheels located below the support plate. A support frame is provided between the support plate and the base frame. The support plate and the support frame are movably connected by a vertically telescopic elastic adjustment component. The base frame and the support plate are movably connected by a horizontal adjustment component that can adjust the levelness of the support plate. The top center of the support plate is connected to a rotation angle adjustment component. The support plate and the base frame are movably connected by a lateral movement adjustment component.

[0012] Preferably, the elastic adjustment assembly includes a spring arranged along the edge of the support plate and a spring support seat arranged along the edge of the support frame; the lower end of the spring is fixedly connected to the spring support seat, the spring support seat is fixedly connected to the outer wall of the support frame, and the upper end of the spring is fixedly connected to the bottom surface of the support plate.

[0013] Preferably, a protective cover is installed on the outer side of the support plate, and a horizontal adjustment assembly is provided on the protective cover. The horizontal adjustment assembly includes a second fastening seat, a connecting seat, a fastening rod, and fastening knobs. The second fastening seat is installed on the outer wall of the protective cover, and a connecting seat is provided below the second fastening seat. The connecting seat is installed on the outer wall of the support frame. The second fastening seat is rotatably connected to the fastening rod via a pin. Two fastening knobs are threaded onto the fastening rod. The fastening rod is engaged in the groove of the connecting seat, and the two fastening knobs are symmetrical about the connecting seat.

[0014] Preferably, the rotation angle adjustment assembly includes a lower rotary table for mounting the rocket's central engine, an upper rotary table for mounting the rocket's peripheral engine, a locking seat, and a fastening pin; the upper part of the lower rotary table is connected to the upper rotary table, the outer wall of the lower rotary table is fixedly connected to the locking seat, the locking seat is threadedly connected to the fastening pin, and the end of the fastening pin is inserted into a groove on the outer wall of the upper rotary table.

[0015] Preferably, the support plate is further provided with an adapter component; the adapter component includes a first adapter plate and a second adapter plate; the first adapter plates are distributed circumferentially along the lower turntable and fixed to the top surface of the support plate, and a second adapter plate is provided between every two first adapter plates, and the second adapter plate is also fixed to the top surface of the support plate.

[0016] Preferably, the lateral adjustment assembly includes a first slide rail, a second slide rail, a fixed base, a drive shaft, a threaded rod, a drive threaded seat, a support bearing, a first universal joint, and a second universal joint. The first slide rail is installed on the bottom surface of the support frame, and a second slide rail fixed to the base frame is slidably connected to the first slide rail. A fixed base is installed at the center of the top surface of the base frame, and a support bearing is installed inside the fixed base. A first universal joint is rotatably connected to one side of the support bearing, and a threaded rod is rotatably connected to the other side. A drive threaded seat is threaded onto the threaded rod, and the drive threaded seat is fixed to the bottom of the support frame. A drive shaft is installed on the first universal joint, and a second universal joint is installed at the end of the drive shaft. The second universal joint is rotatably connected to the outer wall of the base frame through a bearing.

[0017] Preferably, a handwheel is fixed to the end of the second universal joint.

[0018] Preferably, a connecting ring is installed at the bottom of the base frame, and a bottom shaft is movably connected inside the connecting ring. Both ends of the bottom shaft are fixedly connected to support wheels, and the support wheels are connected to a track.

[0019] Preferably, a positioning and locking assembly is provided on one side of the base frame; the positioning and locking assembly includes a first fastening seat, a connecting rod, a double-ended threaded tube, and a locking head; one end of the double-ended threaded tube is connected to the connecting rod with a left-hand thread, and the other end is connected to the locking head with a right-hand thread; the other end of the connecting rod is rotatably connected to the first fastening seat via a pin; the first fastening seat is installed on the side wall of the base frame; and the locking head is engaged with the track.

[0020] Preferably, the bottom of the support frame is fixedly connected to a buckle, and the outer wall of the double-ended threaded tube is fixedly connected to a locking block, which is engaged with the buckle.

[0021] Preferably, a first lifting ring is fixed to the top surface of the support plate and arranged circumferentially along the support plate; a second lifting ring is fixed to the outer wall of the support frame and arranged circumferentially along the support frame; and a third lifting ring is fixed to the lower turntable and arranged circumferentially along the lower turntable.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. This device for assembling the first-stage engine of a launch vehicle, through the cooperation of a lifting mechanism, an adapter trolley and a track, realizes the functional requirements of transferring, adjusting attitude and assembling various parts of the launch vehicle, which greatly improves the efficiency of the assembly of the first-stage engine of a commercial aerospace launch vehicle. At the same time, its simple structural design makes it easy for staff to operate and use, reducing the workload of staff.

[0024] 2. By adapting the support plate, support wheels, lower turntable, elastic adjustment components, horizontal adjustment components, and lateral adjustment components on the trolley, not only can the functional requirements for transferring various components of the launch vehicle be met, but the attitude adjustment and degree of freedom adjustment of the various components of the launch vehicle placed on the support plate can also be achieved. This elastic and adaptive design simplifies the degree of freedom adjustment mechanism, reduces the cost, facilitates operation by the staff, and improves the efficiency of subsequent assembly, avoiding problems such as difficulty in attitude adjustment and easy collision during the lifting and assembly process.

[0025] 3. By setting adapter components on the support plate, the rocket transition section, rocket tail section and rocket engine of different types of launch vehicles can be transferred, adjusted and assembled, reducing the types of assembly tooling and having good versatility and compatibility.

[0026] 4. By setting a transverse adjustment component on the base frame, the position of the support plate can be adjusted, thereby adjusting the position of each workpiece of the launch vehicle placed on the support plate. The mechanical structure realizes multi-degree-of-freedom adjustment, which can avoid excessive movement of workpieces due to the transmission motor compared with hydraulic transmission, and facilitates the adjustment of the assembly position of the workpieces.

[0027] 5. By setting a positioning and locking component on the base frame, it is convenient to lock the various components of the launch vehicle during assembly, secure them to the track, avoid interference, and thus improve its safety. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the device for assembling the first stage engine of a launch vehicle provided in an embodiment of the present invention;

[0030] Figure 2 This is a schematic diagram of the lifting assembly structure of the lifting mechanism provided in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the slewing component structure of the lifting mechanism provided in an embodiment of the present invention;

[0032] Figure 4 This is a three-dimensional structural diagram of the adaptable vehicle provided in an embodiment of the present invention;

[0033] Figure 5 A schematic diagram of the connection structure between the lower and upper turntables of the adaptable trolley provided in an embodiment of the present invention;

[0034] Figure 6 A schematic diagram of the elastic adjustment component structure for the adaptable vehicle provided in an embodiment of the present invention;

[0035] Figure 7 This is a side view of the lateral adjustment component for the adaptable vehicle provided in an embodiment of the present invention;

[0036] Figure 8 for Figure 7 A partially enlarged structural diagram;

[0037] Figure 9 This is a front view of the lateral adjustment component for the adaptable vehicle provided in an embodiment of the present invention;

[0038] Figure 10 A schematic diagram of the horizontal adjustment component structure for the adaptable vehicle provided in an embodiment of the present invention;

[0039] Figure 11 This is a schematic diagram of the positioning and locking assembly structure for the adaptable vehicle provided in an embodiment of the present invention;

[0040] Figure 12This is a schematic diagram of the structure of the elastic adjustment component for the adaptable vehicle provided in an embodiment of the present invention.

[0041] Figure Descriptions: 1. Protective cover; 2. Support wheel; 3. Base frame; 4. Handwheel; 5. Support plate; 6. First adapter plate; 7. Second adapter plate; 8. First fastening seat; 9. Connecting ring; 10. Bottom shaft; 11. Connecting rod; 12. Double-ended threaded pipe; 13. Locking head; 14. Buckle; 15. Fastening knob; 16. Fastening rod; 17. Second fastening seat; 18. First slide rail; 19. Fixed seat; 20. Drive shaft; 21. Second slide rail; 22. First lifting ring; 23. Spring support seat; 24. Second lifting ring; 25. Connecting seat; 26. Support frame; 27. Spring; 28. Third lifting ring; 29. ​​Lower rotary table; 30. Upper rotary table; 31. Locking seat; 32. 33. Fastening pin; 34. Lifting mechanism; 35. Rocket transition section; 36. Rocket tail end; 37. Rocket engine; 38. Track; 39. Clamping block; 40. Threaded rod; 41. Transmission threaded seat; 42. Support bearing; 43. First universal joint; 44. Second universal joint; 45. Support column; 46. Follow-up protective cover; 47. Connecting flange; 48. Lifting platform; 49. Power transmission rod; 50. Fastening nut; 51. Reversing support seat; 52. Power commutator; 53. Diverter; 54. Motor; 55. Power transmission shaft; 56. Transmission gear; 57. Transmission nut sleeve; 58. Transmission screw; 59. Rotary motor; 60. Special-shaped rotary table; 51. Lifting buckle. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0044] In the description of this invention, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0045] The following is combined with Figures 1-12 The present invention will be described in detail below.

[0046] Example

[0047] Depend on Figure 1-12 It is known that a device for assembling a first-stage engine of a launch vehicle includes a lifting mechanism 33 for hoisting workpieces and an adapter trolley for transferring workpieces; the lifting mechanism 33 includes a lifting component for lifting and lowering workpieces and a slewing component for assembling the rocket engine 36; the adapter trolley is equipped with an attitude adjustment mechanism, which includes an elastic adjustment component, a horizontal adjustment component, a slewing angle adjustment component and a lateral movement adjustment component.

[0048] The lifting assembly includes a support column 44, a lifting platform 47, a power transmission rod 48, a fastening nut 49, a reversing support seat 50, a power reversing device 51, a splitter 52, a motor 53, a power transmission shaft 54, a transmission gear 55, a transmission nut sleeve 56, and a transmission screw 57.

[0049] In the specific implementation process, it is worth noting that through the cooperation of the lifting and rotating components, the various components of the launch vehicle transported by the adaptable trolley can be assembled together via the lifting and rotating components. At the same time, its simple structure makes it easy for staff to operate, further improving work efficiency and reducing the workload of staff.

[0050] Furthermore, a splitter 52 for converting the power of the motor 53 into horizontal power is installed at the output end of the motor 53. The splitter 52 is fixed to the lifting platform 47. A power transmission rod 48 is installed at the output interface of the splitter 52. A power commutator 51 for converting horizontal power into vertical power is installed at the end of the power transmission rod 48. The power commutator 51 is fixed to the lifting platform 47 through a commutator support 50. A power transmission shaft 54 ​​is installed at the output interface of the power commutator 51. The power transmission shaft 54 ​​is rotatably connected to the lifting platform 47 through a bearing, and a transmission gear 55 is installed at its end. The transmission gear 55 is meshed with a transmission nut sleeve 56. The transmission nut sleeve 56 is connected to a transmission screw 57. The transmission screw 57 is installed on the inner wall of the support column 44 through a fastening nut 49.

[0051] In the specific implementation process, it is worth noting that the model of motor 53 is not specifically limited here, as long as it meets the actual usage requirements. The splitter 52 is used to convert the power of motor 53 into horizontal power; its model is not specifically limited here, as long as it meets the actual usage requirements. The power commutator 51 converts horizontal power into vertical power; its model is not specifically limited here, as long as it meets the actual usage requirements. When the operator starts motor 53, the power of motor 53 is converted into horizontal power via splitter 52 and transmitted to the power transmission rod 48. The force transmission rod 48 transmits horizontal power to the power commutator 51, which converts the horizontal power into vertical power and transmits it to the power transmission shaft 54. The power transmission shaft 54 ​​drives the transmission gear 55 at the end to rotate, and the transmission gear 55 drives the transmission nut sleeve 56 that meshes with it to rotate, so that the transmission nut sleeve 56 can move vertically along the transmission screw 57. At the same time, due to the sliding limit of the support column 44 on the lifting platform 47, the lifting platform 47 can be controlled to move up and down by controlling the forward and reverse rotation direction of the motor 53.

[0052] Furthermore, the rotary assembly includes a connecting flange 46, a rotary motor 58, a shaped rotary disc 59, and lifting buckles 60. The shaped rotary disc 59 is installed on the lifting platform 47, and the wedge-shaped groove of the shaped rotary disc 59 engages with the upper part of the connecting flange 46. The connecting flange 46 is bolted to the rocket transition section 34. Several lifting buckles 60 are installed on the connecting flange 46. A rotary motor 58 for driving the rotation of the shaped rotary disc 59 is installed below one of the wedge-shaped grooves of the shaped rotary disc 59.

[0053] In the specific implementation process, it is worth noting that when the connecting flange 46 is placed in the wedge groove of the irregular rotary table 59, it enters the lifting position for lifting operations. When the connecting flange 46 is placed at the notch of the irregular rotary table 59, it enters the disassembly position. The model of the rotary motor 58 is not specifically limited here, as long as it meets the actual use needs. The lifting buckle 60 is used to facilitate the lifting and disassembly of the connecting flange 46. The wedge groove of the irregular rotary table 59 matches the upper shape of the connecting flange 46, making the two fit tightly. By setting up the rotary assembly, it is convenient to install the rocket transition section 34, the rocket tail end 35, and the rocket engine 36 onto the lifting assembly, which facilitates subsequent lifting and lifting installation using the lifting assembly. At the same time, the rotary assembly facilitates quick switching to the next installation position when installing the rocket peripheral engine, avoiding multiple adjustments to the assembly angle during the installation of the rocket engine 36, and facilitating the installation of rocket peripheral engines with tilt angles.

[0054] In addition, a follow-up protective cover 45 is installed on the outer wall of the reversing support 50.

[0055] In the specific implementation process, it is worth noting that the follow-up protective cover 45 plays a protective role, preventing its internal power transmission shaft 54 ​​from being hit by external collisions and dust.

[0056] Furthermore, the adapter also includes a support plate 5 that bears the load, and a base frame 3 with support wheels 2 located below the support plate 5. A support frame 26 is provided between the support plate 5 and the base frame 3. The support plate 5 and the support frame 26 are movably connected by a vertically telescopic elastic adjustment component. The base frame 3 and the support plate 5 are movably connected by a horizontal adjustment component that can adjust the level of the support plate 5. The top center of the support plate 5 is connected to a rotation angle adjustment component. The support plate 5 and the base frame 3 are movably connected by a lateral adjustment component.

[0057] In the specific implementation process, it is worth noting that both the support frame 26 and the base frame 3 are made of carbon structural steel Q275, the support plate 5 is made of profile welded together, and the dimensions of the support plate 5 are matched with those of the rocket transition section 34 and the rocket tail section 35.

[0058] The elastic adjustment assembly includes a spring 27 arranged along the edge of the support plate 5 and a spring support seat 23 arranged along the edge of the support frame 26; the lower end of the spring 27 is fixedly connected to the spring support seat 23, the spring support seat 23 is fixedly connected to the outer wall of the support frame 26, and the upper end of the spring 27 is fixedly connected to the bottom surface of the support plate 5.

[0059] In the specific implementation process, it is worth noting that, due to the cooperation between spring 27 and spring support seat 23, support plate 5 can be elastically adapted and horizontal tilt angle can be adjusted to adapt to the assembly of different types of launch vehicles.

[0060] In addition, a protective cover 1 is installed on the outside of the support plate 5. The protective cover 1 can prevent the spring 27 and spring support seat 23 from pinching and injuring the operator, and plays a certain protective role. The protective cover 1 is a metal ring plate structure. The protective cover 1 is equipped with a horizontal adjustment component, which includes a second fastening seat 17, a connecting seat 25, a fastening rod 16 and a fastening knob 15. The second fastening seat 17 is installed on the outer wall of the protective cover 1. The connecting seat 25 is located below the second fastening seat 17. The connecting seat 25 is installed on the outer wall of the support frame 26. The second fastening seat 17 is rotatably connected to the fastening rod 16 through a pin. Two fastening knobs 15 are threaded on the fastening rod 16. The fastening rod 16 is engaged in the groove of the connecting seat 25. The two fastening knobs 15 are symmetrical about the connecting seat 25.

[0061] In the specific implementation process, it is worth noting that the horizontal adjustment assembly is provided in four sets. The protective cover 1 can prevent the spring 27 and spring support seat 23 from pinching and injuring the operator, and plays a certain protective role. The protective cover 1 is a metal ring plate structure. Before the rocket transition section 34, rocket tail section 35 and rocket engine 36 of the launch vehicle are placed into the support plate 5, the initial state of the horizontal adjustment assembly is that the two fastening knobs 15 are in the loose state and the fastening rod 16 is not engaged in the groove of the connecting seat 25. After the launch vehicle workpiece is placed on the support plate 5, the fastening rod 16 is engaged in the groove of the connecting seat 25, and the horizontal tilt angle of the support plate 5 is adjusted according to the required assembly angle of each workpiece. That is, by adjusting the position of the two fastening knobs 15 on the fastening rod 16, when the support plate 5 is adjusted to a specific assembly position, the fastening knobs 15 are tightened so that the fastening rod 16 is engaged in the groove of the connecting seat 25, thereby limiting the position of the support plate 5.

[0062] Furthermore, the rotation angle adjustment assembly includes a lower rotary table 29 for mounting the rocket's central engine, an upper rotary table 30 for mounting the rocket's peripheral engine, a locking seat 31, and a fastening pin 32; the upper part of the lower rotary table 29 is connected to the upper rotary table 30, the outer wall of the lower rotary table 29 is fixedly connected to the locking seat 31, the locking seat 31 is threadedly connected to the fastening pin 32, and the end of the fastening pin 32 is inserted into the groove on the outer wall of the upper rotary table 30.

[0063] In the specific implementation process, it is worth noting that after the upper turntable 30 is rotated to the specified angle, it can be locked on the locking seat 31 by tightening the fastening pin 32.

[0064] In addition, the support plate 5 is provided with an adapter component; the adapter component includes a first adapter plate 6, a second adapter plate 7 and an upper turntable 30; the first adapter plates 6 are distributed circumferentially along the lower turntable 29 and are fixed to the top surface of the support plate 5, and a second adapter plate 7 is provided between every two first adapter plates 6, and the second adapter plate 7 is also fixed to the top surface of the support plate 5.

[0065] In the specific implementation process, it is worth noting that the first adapter plate 6 and the second adapter plate 7 can prevent the tail of the rocket engine 36 from touching the ground at a single point after assembly, and can be adapted to the load-bearing parts of the rocket transition section 34 and the rocket tail section 35. Alternatively, the first adapter plate 6 and the second adapter plate 7 can be removed, and the support plate 5 becomes a separate transportation and assembly platform. The lower turntable 29 and the upper turntable 30 can rotate 360° to adjust the installation angle of the rocket engine 36. At the same time, the upper turntable 30 is adapted to the size of the nozzle tail of the rocket engine 36, and the bottom of the lower turntable 29 is provided with a connecting hole for threaded connection with the support plate 5.

[0066] Furthermore, the lateral adjustment assembly includes a first slide rail 18, a second slide rail 21, a fixed seat 19, a drive shaft 20, a threaded rod 39, a drive threaded seat 40, a support bearing 41, a first universal joint 42, and a second universal joint 43. The first slide rail 18 is installed on the bottom surface of the support frame 26, and the second slide rail 21, which is fixed to the base frame 3, is slidably connected to the first slide rail 18. The fixed seat 19 is installed at the center of the top surface of the base frame 3, and the support bearing 41 is installed inside the fixed seat 19. The first universal joint 42 is rotatably connected to one side of the support bearing 41, and the threaded rod 39 is rotatably connected to the other side. The drive threaded seat 40 is threadedly connected to the threaded rod 39 and is fixed to the bottom of the support frame 26. The drive shaft 20 is installed on the first universal joint 42, and the second universal joint 43 is installed at the end of the drive shaft 20. The second universal joint 43 is rotatably connected to the outer wall of the base frame 3 through a bearing.

[0067] In the specific implementation process, it is worth noting that both the first slide rail 18 and the second slide rail 21 are made of high-strength alloy steel Q345. The cooperation between the first slide rail 18 and the second slide rail 21 plays a limiting role for the base frame 3 and the support plate 5. When the operator rotates the drive shaft 20, the drive shaft 20 drives the first universal joint 42 to rotate, so that the first universal joint 42 supports the inner ring of the bearing 41 to rotate in the fixed seat 19, which in turn drives the threaded rod 39 to rotate, and finally causes the transmission threaded seat 40, which is threadedly connected to the threaded rod 39, to rotate. However, due to the limiting of the first slide rail 18 and the second slide rail 21, the transmission threaded seat 40 drives the support frame 26, so that the first slide rail 18 on the support frame 26 and the second slide rail 21 on the base frame 3 slide relative to each other.

[0068] In addition, a handwheel 4 is fixed to the end of the second universal joint 43.

[0069] In the specific implementation process, it is worth noting that the handwheel 4 plays a role in saving time and effort. It is convenient for the user to turn the handwheel 4, which drives the second universal joint 43 to rotate, so that the drive shaft 20 connected to the second universal joint 43 rotates. The models of the first universal joint 42 and the second universal joint 43 are not specifically limited here, as long as they meet the actual use needs.

[0070] Furthermore, a connecting ring 9 is installed at the bottom of the base frame 3, and a bottom shaft 10 is movably connected inside the connecting ring 9. Both ends of the bottom shaft 10 are fixedly connected to the support wheel 2. The support wheel 2 is connected to the track 37. By installing the connecting ring 9 and the bottom shaft 10 on the base frame 3, the support wheel 2 is connected to the base frame 3. When the support wheel 2 moves on the track 37, it drives the base frame 3 to move, and finally drives the support plate 5, i.e., the entire device, to move.

[0071] In the specific implementation process, it is worth noting that by installing the connecting ring 9 and the bottom shaft 10 on the base frame 3, the support wheel 2 is connected to the base frame 3. When the support wheel 2 moves on the track 37, it drives the base frame 3 to move, and finally drives the support plate 5, i.e. the entire device, to move, so as to carry out the transfer of the launch vehicle.

[0072] Furthermore, a positioning and locking assembly is provided on one side of the base frame 3. The positioning and locking assembly includes a first fastening seat 8, a connecting rod 11, a double-threaded tube 12, and a locking head 13. One end of the double-threaded tube 12 is connected to the connecting rod 11 with a left-hand thread, and the other end is connected to the locking head 13 with a right-hand thread. The other end of the connecting rod 11 is rotatably connected to the first fastening seat 8 via a pin. The first fastening seat 8 is installed on the side wall of the base frame 3. The locking head 13 is engaged with the track 37. Through the cooperation between the locking head 13 and the track 37, the support wheel 2 and the base frame 3 are fixed on the track 37. At the same time, the operator rotates the double-threaded tube 12 to make the connecting rod 11 and the locking head 13, which are threaded to the double-threaded tube 12, move closer or further apart, ultimately achieving fine adjustment of the support wheel 2 and the base frame 3 on the track 37.

[0073] In the specific implementation process, it is worth noting that by cooperating with the locking head 13 and the track 37, the support wheel 2 and the base frame 3 are fixed on the track 37. At the same time, by rotating the double-threaded tube 12, the operator can make the connecting rod 11 and the locking head 13, which are threadedly connected to the double-threaded tube 12, move closer or further apart, and finally achieve fine adjustment of the support wheel 2 and the base frame 3 on the track 37.

[0074] Furthermore, a buckle 14 is fixedly connected to the bottom of the support frame 26, and a locking block 38 is fixedly connected to the outer wall of the double-ended threaded tube 12. The locking block 38 is connected to the buckle 14. The locking block 38 on the double-ended threaded tube 12 can be locked on the buckle 14 in normal use, which avoids the positioning and locking components from interfering with other structures and affecting the movement of the support wheel 2 on the track 37, thereby improving the safety of the device.

[0075] In the specific implementation process, it is worth noting that the locking block 38 on the double-ended threaded pipe 12 can be locked on the buckle 14 in normal operation, which avoids the positioning and locking components from interfering with other structures and affecting the movement of the support wheel 2 on the track 37, thereby improving the safety of the device.

[0076] Furthermore, a first lifting ring 22 is fixedly connected to the top surface of the support plate 5 along the circumference of the support plate 5. The first lifting ring 22 is used to lift the support plate 5 during assembly operations. A second lifting ring 24 is fixedly connected to the outer wall of the support frame 26 along the circumference of the support frame 26. The second lifting ring 24 is used to lift the support frame 26 during assembly operations. A third lifting ring 28 is fixedly connected to the lower turntable 29 along the circumference of the lower turntable 29. The third lifting ring 28 is used to lift the lower turntable 29 during assembly operations.

[0077] In the specific implementation process, it is worth noting that the first lifting ring 22 is used to lift the support plate 5 during assembly operations, the second lifting ring 24 is used to lift the support frame 26 during assembly operations, and the third lifting ring 28 is used to lift the lower turntable 29 during assembly operations.

[0078] Specifically, when using this device for assembling the first-stage engine of a launch vehicle, the workers first use hoisting equipment to place the connecting flange 46 onto the adapter trolley. Then, the workers start the motor 53. The power of the motor 53 is converted into horizontal power via the distributor 52 and transmitted to the power transmission rod 48. The power transmission rod 48 then transmits the horizontal power to the power commutator 51. The power commutator 51 converts the horizontal power into vertical power and transmits it to the power drive shaft 54. The power drive shaft 54 ​​drives the transmission gear 55 at its end to rotate, and the transmission gear 55 drives the meshing connection with it. The transmission nut sleeve 56 rotates, allowing it to move vertically along the transmission screw 57. Simultaneously, due to the sliding limit of the support column 44 on the lifting platform 47, the lifting platform 47 eventually descends, causing the upper interface of the connecting flange 46 to reach the designated height through the notch of the irregular rotary table 59. Then, the rotary motor 58 is started to drive the irregular rotary table 59 to rotate, so that the wedge groove of the irregular rotary table 59 is located below the upper interface of the connecting flange 46. The motor 53 is started to raise the lifting platform 47, placing the connecting flange 46 in the wedge groove of the irregular rotary table 59. This completes the fixed installation of the connecting flange 46.

[0079] Then, using the adapter trolley, the rocket transition section 34, rocket tail section 35, and rocket engine 36 are transported sequentially. At this time, it is necessary to select the first adapter plate 6 and the second adapter plate 7 to be adapted to the load-bearing parts of the rocket transition section 34 and rocket tail section 35 according to the actual situation. When transporting, adjusting, and assembling the rocket transition section 34 and rocket tail section 35, the lower rotary table 29 and upper rotary table 30 used for assembling the rocket engine are removed. When transporting, adjusting, and assembling the rocket engine 36, the lower rotary table 29 and upper rotary table 30 are reinstalled onto the support plate 5, and the horizontal adjustment assembly is returned to its initial state. With both fastening knobs 15 in the loosened position and the fastening rod 16 not engaged in the groove of the connecting seat 25, the rocket transition section 34 is then placed on the support plate 5 using hoisting equipment. The fastening rod 16 is then engaged in the groove of the connecting seat 25. The horizontal tilt angle of the support plate 5 is adjusted according to the required assembly angle of the rocket transition section 34, i.e., by adjusting the position of the two fastening knobs 15 on the fastening rod 16. Once the support plate 5 is adjusted to the specific assembly position, the fastening knobs 15 are tightened so that the fastening rod 16 is engaged in the groove of the connecting seat 25, thus limiting the position of the support plate 5. The operator then pushes... Linkage 11 causes support wheel 2 to move along track 37, which in turn drives base frame 3 and support plate 5 to move. When it moves to the lifting mechanism 33, handwheel 4 is turned, which drives second universal joint 43 to rotate, causing drive shaft 20 connected to second universal joint 43 to rotate. Drive shaft 20 then drives first universal joint 42 to rotate, causing the inner ring of bearing 41 supported by first universal joint 42 to rotate within fixed seat 19, which in turn drives threaded rod 39 to rotate, ultimately causing drive threaded seat 40 threadedly connected to threaded rod 39 to rotate. However, due to the first slide rail 18 and second slide rail 21... The limit position allows the transmission threaded seat 40 to drive the support frame 26 fixed to it to slide relative to each other along the first slide rail 18 on the support frame 26 and the second slide rail 21 on the base frame 3, thus realizing the lateral movement of the support plate 5. Then, the worker installs the locking head 13 on the track 37 to fix the position. If the assembly position is not completely aligned, the double-ended threaded tube 12 can be rotated. The double-ended threaded tube 12 drives the connecting rod 11 and the locking head 13 connected to it to move closer or further apart, thereby adjusting the position of the support wheel 2 on the track 37 so that the assembly position of the rocket transition section 34 is aligned.

[0080] After alignment, start the lifting mechanism 33. Use the lifting and rotating components of the lifting mechanism 33 to lift and assemble the rocket transition section 34. That is, start the motor 53 to lower the lifting platform 47. Then, the staff will bolt the connecting flange 46 to the rocket transition section 34. After the connection is completed, start the motor 53 again to raise the lifting platform 47 and complete the lifting and assembly of the rocket transition section 34.

[0081] The above operations can be repeated for transferring, adjusting, and assembling the rocket tail section 35. When transferring, adjusting, and assembling the center engine of the rocket engine 36, install the lower rotary table 29 onto the support plate 5. Adjust the lower rotary table 29 to align the center engine of the rocket engine 36 with the installation position. When transferring, adjusting, and assembling the peripheral engines of the rocket engine 36, install the upper rotary table 30 onto the lower rotary table 29, that is, install the fastening pin 32 onto the locking seat 31 of the lower rotary table 29. Adjust the upper rotary table 30 to align the peripheral engines of the rocket engine 36 with the installation position. After all parts are assembled, start the motor 53 to lower the lifting platform 47 and transfer the rocket. The assembly consisting of section 34, rocket tail section 35, and rocket engine 36 is directly placed onto support plate 5, with auxiliary support provided by first adapter plate 6 and second adapter plate 7 to prevent the tail of rocket engine 36 from becoming the main load-bearing part. At this time, the workers further lower the lifting platform 47 so that the connecting flange 46 is disengaged from the wedge groove of the irregular rotary table 59 and reaches the designated height. Then, the rotary motor 58 is started to drive the irregular rotary table 59 to rotate, so that the notch of the irregular rotary table 59 is above the upper interface of the connecting flange 46. The motor 53 is started to raise the lifting platform 47 so that the connecting flange 46 is located at the notch of the irregular rotary table 59, completing the disassembly of the connecting flange 46.

[0082] After the connecting flange 46 is disassembled, it can be transported to the next process position along with the assembly. This realizes the assembly, adjustment, load-bearing and transportation functions of the launch vehicle. Finally, when the adapter trolley is not used in daily life, the locking head 13 is taken out from the track 37, and the connecting rod 11 is lifted up, so that the connecting rod 11 rotates around the first fastening seat 8, thereby driving the locking block 38 on the double-threaded pipe 12 threaded with the connecting rod 11 to engage with the buckle 14 on the support frame 26.

[0083] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for assembling a first-stage engine of a launch vehicle, characterized in that: It includes a lifting mechanism (33) for hoisting workpieces and an adapter trolley for transferring workpieces; the lifting mechanism (33) includes a lifting component for lifting workpieces and a slewing component for assembling rocket engines (36); the adapter trolley is equipped with an attitude adjustment mechanism, which includes an elastic adjustment component, a horizontal adjustment component, a slewing angle adjustment component and a lateral movement adjustment component. The lifting assembly includes a support column (44), a lifting platform (47), a power transmission rod (48), a fastening nut (49), a reversing support seat (50), a power commutator (51), a splitter (52), a motor (53), a power transmission shaft (54), a transmission gear (55), a transmission nut sleeve (56), and a transmission screw (57). The rotary assembly includes a connecting flange (46), a rotary motor (58), a shaped rotary disc (59), and a hook (60); the shaped rotary disc (59) is installed on the lifting platform (47), the wedge groove of the shaped rotary disc (59) is engaged with the upper part of the connecting flange (46), the connecting flange (46) is bolted to the rocket transition section (34), a number of hooks (60) are installed on the connecting flange (46), and a rotary motor (58) for driving the shaped rotary disc (59) to rotate is installed below one of the wedge grooves of the shaped rotary disc (59); Both sides of the lifting platform (47) are slidably connected to support columns (44). A motor (53) is installed on the lifting platform (47). A distributor (52) for converting the power of the motor (53) into horizontal power is installed at the output end of the motor (53). The distributor (52) is fixed to the lifting platform (47). A power transmission rod (48) is installed at the output interface of the distributor (52). A power commutator (51) for converting horizontal power into vertical power is installed at the end of the power transmission rod (48). The power commutator (51) is fixed to the lifting platform (47) via the commutator support (50). The output interface of the power commutator (51) is equipped with a power drive shaft (54). The power drive shaft (54) is rotatably connected to the lifting platform via a bearing, and a drive gear (55) is installed at its end. The drive gear (55) is meshed with a drive nut sleeve (56). The drive nut sleeve (56) is connected with a drive screw (57). The drive screw (57) is installed on the inner wall of the support column (44) via a fastening nut (49).

2. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 1, characterized in that: The outer wall of the reversing support (50) is equipped with a follow-up protective cover (45).

3. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 1, characterized in that: The adapter trolley also includes a support plate (5) that bears the load, and a base frame (3) with support wheels (2) located below the support plate (5). A support frame (26) is provided between the support plate (5) and the base frame (3). The support plate (5) and the support frame (26) are movably connected by a vertically telescopic elastic adjustment component. The base frame (3) and the support plate (5) are movably connected by a horizontal adjustment component that can adjust the level of the support plate (5). The top surface of the support plate (5) is connected to a rotation angle adjustment component. The support plate (5) and the base frame (3) are movably connected by a transverse adjustment component.

4. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 3, characterized in that: The elastic adjustment assembly includes a spring (27) arranged along the edge of the support plate (5) and a spring support seat (23) arranged along the edge of the support frame (26); The lower end of the spring (27) is fixedly connected to the spring support seat (23), the spring support seat (23) is fixedly connected to the outer wall of the support frame (26), and the upper end of the spring (27) is fixedly connected to the bottom surface of the support plate (5).

5. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 3, characterized in that: A protective cover (1) is installed on the outside of the support plate (5). A horizontal adjustment assembly is provided on the protective cover (1). The horizontal adjustment assembly includes a second fastening seat (17), a connecting seat (25), a fastening rod (16), and a fastening knob (15). The second fastening seat (17) is installed on the outer wall of the protective cover (1). A connecting seat (25) is provided below the second fastening seat (17). The connecting seat (25) is installed on the outer wall of the support frame (26). The second fastening seat (17) is rotatably connected to a fastening rod (16) via a pin. Two fastening knobs (15) are threaded onto the fastening rod (16). The fastening rod (16) is engaged in the groove of the connecting seat (25). The two fastening knobs (15) are symmetrical about the connecting seat (25).

6. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 3, characterized in that: The rotation angle adjustment assembly includes a lower rotary table (29) for mounting the rocket center engine, an upper rotary table (30) for mounting the rocket peripheral engine, a locking seat (31), and a fastening pin (32). The lower rotary table (29) is connected to the upper rotary table (30) above. A locking seat (31) is fixed to the outer wall of the lower rotary table (29). A fastening pin (32) is threaded onto the locking seat (31). The end of the fastening pin (32) is inserted into the groove on the outer wall of the upper rotary table (30).

7. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 3, characterized in that: The support plate (5) is also provided with an adapter component; the adapter component includes a first adapter plate (6) and a second adapter plate (7); The first adapter plate (6) is distributed circumferentially along the lower turntable (29) and fixed to the top surface of the support plate (5). A second adapter plate (7) is provided between every two first adapter plates (6), and the second adapter plate (7) is also fixed to the top surface of the support plate (5).

8. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 3, characterized in that: The lateral adjustment assembly includes a first slide rail (18), a second slide rail (21), a fixed seat (19), a drive shaft (20), a threaded rod (39), a drive threaded seat (40), a support bearing (41), a first universal joint (42), and a second universal joint (43); The first slide rail (18) is installed on the bottom surface of the support frame (26). A second slide rail (21) fixed to the base frame (3) is slidably connected to the first slide rail (18). A fixed seat (19) is installed at the center of the top surface of the base frame (3). A support bearing (41) is installed inside the fixed seat (19). A first universal joint (42) is rotatably connected to one side of the support bearing (41), and a threaded rod (39) is rotatably connected to the other side. A transmission threaded seat (40) is threadedly connected to the threaded rod (39). The transmission threaded seat (40) is fixed to the bottom of the support frame (26). A transmission shaft (20) is installed on the first universal joint (42). A second universal joint (43) is installed at the end of the transmission shaft (20). The second universal joint (43) is rotatably connected to the outer wall of the base frame (3) through a bearing.

9. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 8, characterized in that: A handwheel (4) is fixed to the end of the second universal joint (43).

10. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 3, characterized in that: A connecting ring (9) is installed at the bottom of the base frame (3). A bottom shaft (10) is movably connected inside the connecting ring (9). Both ends of the bottom shaft (10) are fixedly connected to the support wheel (2). The support wheel (2) is connected to the track (37).

11. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 10, characterized in that: The base frame (3) is provided with a positioning and locking assembly on one side; the positioning and locking assembly includes a first fastening seat (8), a connecting rod (11), a double-ended threaded tube (12) and a locking head (13); One end of the double-ended threaded tube (12) is connected to the left-hand thread of the connecting rod (11), and the other end is connected to the right-hand thread of the locking head (13). The other end of the connecting rod (11) is rotatably connected to the first fastening seat (8) through a pin. The first fastening seat (8) is installed on the side wall of the base frame (3), and the locking head (13) is engaged with the track (37).

12. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 11, characterized in that: The bottom of the support frame (26) is fixedly connected to a buckle (14), and the outer wall of the double-ended threaded pipe (12) is fixedly connected to a locking block (38), which is engaged with the buckle (14).

13. The apparatus for assembling a first-stage engine of a launch vehicle according to claim 6, characterized in that: The top surface of the support plate (5) is fixed with a first lifting ring (22) arranged circumferentially along the support plate (5), the outer wall of the support frame (26) is fixed with a second lifting ring (24) arranged circumferentially along the support frame (26), and the lower turntable (29) is fixed with a third lifting ring (28) arranged circumferentially along the lower turntable (29).

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