Launch platform with rotation function online loading tool

Abstract

The application relates to an online loading tool of a launching platform with a rotating function, which comprises a supporting piece, lower connecting rods, a lower connecting disc, a rotary disc bearing, an upper connecting disc, upper connecting rods, oil cylinders and a loading piece, the lower connecting rods are centrally symmetrically distributed, the lower ends of the lower connecting rods are hingedly connected with the supporting piece through pin shafts respectively, the upper ends of the lower connecting rods are hingedly connected with the lower connecting disc through pin shafts respectively, the outer ring of the rotary disc bearing is fixedly connected with the lower connecting disc, the inner ring of the rotary disc bearing is fixedly connected with the upper connecting disc, the upper connecting rods are centrally symmetrically distributed, the lower ends of the upper connecting rods are hingedly connected with the upper connecting disc through pin shafts respectively, the oil cylinders are provided with a plurality of lower ends which are hingedly connected with the upper ends of the upper connecting rods through pin shafts respectively, and the upper ends of the oil cylinders are hingedly connected with the loading piece through pin shafts respectively. The tool has the advantages of simple structure, convenient disassembly and assembly, strong adaptability and high reliability.

Description

Technical Field

[0001] This invention relates to a test apparatus for an aircraft launch pad, specifically to an online loading fixture for a launch pad with a rotation function. Background Technology

[0002] In aerospace and other fields, launch pads for rockets and other spacecraft require loading tests after major overhauls to ensure their load-bearing capacity and safety. Existing launch pad loading devices are ground-fixed and bulky, suitable only for loading tests at fixed, designated sites. They cannot perform on-site (online) loading tests, impacting work efficiency. Furthermore, existing launch pad loading devices cannot adequately handle launch pad lifting, rotation, and other movements, affecting the reliability of loading tests. Summary of the Invention

[0003] The purpose of this invention is to provide an online loading fixture for a launch pad with a rotation function, which has the advantages of simple structure, convenient assembly and disassembly, strong adaptability and high reliability.

[0004] To address the aforementioned problems in the prior art, this invention provides an online loading fixture for a launch pad with a rotation function, comprising a support member, lower connecting rods, a lower connecting plate, a turntable bearing, an upper connecting plate, an upper connecting rod, hydraulic cylinders, and a loading member. Multiple lower connecting rods are provided and centrally symmetrically distributed. The lower ends of the multiple lower connecting rods are respectively hinged to the support member via pins, and the upper ends of the multiple lower connecting rods are respectively hinged to the lower connecting plate via pins. The outer ring of the turntable bearing is fixedly connected to the lower connecting plate, and the inner ring of the turntable bearing is fixedly connected to the upper connecting plate. Multiple upper connecting rods are provided and centrally symmetrically distributed. The lower ends of the multiple upper connecting rods are respectively hinged to the upper connecting plate via pins. Multiple hydraulic cylinders are provided, with their lower ends respectively hinged to the upper ends of the multiple upper connecting rods one-to-one via pins. The upper ends of the multiple hydraulic cylinders are respectively hinged to the loading member via pins.

[0005] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the support member includes a first connecting seat and four support beams fixed on the first connecting seat. The first connecting seat and the four support beams are combined to form a cross shape. Each of the four support beams is provided with a lug, and the outer ends of the four support beams are provided with a flat plate for supporting the launch pad. There are four lower connecting rods, and the lower ends of the four lower connecting rods are hinged to the lugs on the four support beams.

[0006] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the lower connecting plate includes a first connecting member and four first ear plates fixed on the first connecting member. The upper end of the first connecting member is provided with a first flange for connecting the outer ring of the turntable bearing. The four first ear plates are evenly distributed along the circumference of the first connecting member and are correspondingly hinged to the four lower connecting rods.

[0007] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the upper connecting plate includes a second connecting member and four second ear plates fixed on the second connecting member, the lower end of the second connecting member is provided with a second flange for connecting the inner ring of the turntable bearing, the four second ear plates are evenly distributed along the circumference of the second connecting member, and four upper connecting rods and four hydraulic cylinders are provided respectively, the lower ends of the four upper connecting rods being hinged to the four second ear plates of the upper connecting plate.

[0008] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the loading component includes a second connecting seat and four loading beams fixed on the second connecting seat. The second connecting seat and the four loading beams are combined to form a cross shape. Each of the four loading beams is provided with a support corresponding to the four hydraulic cylinders. The outer ends of the four loading beams are provided with a mounting bracket for connecting the launch pad support arm.

[0009] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the first connecting seat and the support beam are both welded from plates. The first connecting seat is square, and the support beam is fixed to the first connecting seat by a first connecting plate welded to its inner end and bolts. The lugs and the flat plate are respectively fixed to the support beam by welding.

[0010] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the second connecting seat and the loading beam are both constructed by welding plates. The second connecting seat is square, and the loading beam is fixed to the second connecting seat by a second connecting plate welded to its inner end and bolts. The support includes a bracket plate welded to the outer end of the loading beam, and two support plates are fixedly fixed at intervals on the bracket plate. The lower half of the two support plates is provided with shaft holes for hinged hydraulic cylinders. The clamping seat includes a notch provided in the middle of the two support plates, and the upper and lower sides of the notch are respectively provided with limiting plates fixedly connected to the two support plates. The limiting plates are provided with pin holes for connecting the launch pad support arm.

[0011] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the first connecting member is cylindrical, and the four first ear plates are fixed to the outer peripheral wall of the first connecting member by welding, and a first horizontal stiffener and a first vertical stiffener are welded between adjacent first ear plates.

[0012] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the second connecting member is cylindrical, and the four second ear plates are fixed to the outer peripheral wall of the second connecting member by welding, and a second horizontal stiffener and a second vertical stiffener are welded between adjacent second ear plates.

[0013] Furthermore, the present invention provides an online loading fixture for a launch pad with a rotation function, wherein the two ends of the lower connecting rod are respectively hinged to the support lug and the first lug plate via a first U-shaped fork, and the two ends of the upper connecting rod are respectively hinged to the second lug plate and the hydraulic cylinder via a second U-shaped fork.

[0014] Compared with the prior art, the online loading fixture for a launch pad with a rotation function of the present invention has the following advantages: The present invention sets up a support member, a lower connecting rod, a lower connecting plate, a turntable bearing, an upper connecting plate, an upper connecting rod, a hydraulic cylinder, and a loading member. Multiple lower connecting rods are arranged in a centrally symmetrical distribution, with the lower ends of the multiple lower connecting rods hinged to the support member via pins, and the upper ends of the multiple lower connecting rods are hinged to the lower connecting plate via pins. The outer ring of the turntable bearing is fixedly connected to the lower connecting plate, and the inner ring of the turntable bearing is fixedly connected to the upper connecting plate. Multiple upper connecting rods are arranged in a centrally symmetrical distribution, with the lower ends of the multiple upper connecting rods hinged to the upper connecting plate via pins. Similarly, multiple hydraulic cylinders are arranged, with their lower ends hinged to the upper ends of the multiple upper connecting rods one-to-one via pins, and the upper ends of the multiple hydraulic cylinders are hinged to the loading member via pins. This results in a simple, easy-to-assemble, adaptable, and highly reliable online loading fixture for launch pads with a rotation function. In practical applications, the support components, lower connecting rod, lower connecting plate, turntable bearing, upper connecting plate, upper connecting rod, hydraulic cylinder, and loading components are first transported to the launch pad maintenance site and assembled into the loading fixture on a stable ground surface. Then, the launch pad is hoisted onto the support components, and each arm of the launch pad is connected to the loading components. Next, the hydraulic cylinder applies a pulling force to the loading components, which then apply a downward load to the launch pad arms. By detecting the downward load, the load-bearing capacity of the launch pad can be tested. This invention improves the ease of assembly, disassembly, and transportation by using a loading fixture composed of a support, lower connecting rod, lower connecting plate, turntable bearing, upper connecting plate, upper connecting rod, hydraulic cylinder, and loading component. This not only enables online loading testing of the launch pad but also significantly improves work efficiency and safety. By using a hydraulic cylinder as the force-applying component, the cylinder extends or retracts synchronously when the launch pad is raised or lowered, effectively adapting to the launch pad's lifting and lowering movements while maintaining a constant downward load. Furthermore, the turntable bearing allows the upper and lower parts of the loading fixture to rotate relative to each other, effectively adapting to the launch pad's rotational movements while maintaining a constant downward load, thus enhancing the loading fixture's adaptability to the launch pad.

[0015] The following detailed description of an online loading fixture for a launch pad with a rotation function, with reference to the accompanying drawings, illustrates the specific embodiments of the present invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the online loading fixture for a launch pad with a rotation function according to the present invention.

[0017] Figure 2 This is a top view of the loading component in this invention;

[0018] Figure 3 This is a front view of the lower connecting plate in this invention;

[0019] Figure 4 This is a top view of the lower connecting plate in this invention;

[0020] Figure 5 This is a front view of the upper connecting disk in this invention;

[0021] Figure 6 This is a top view of the upper connecting plate in this invention. Detailed Implementation

[0022] First, it should be noted that the directional terms such as up, down, left, right, front, and back used in this invention are merely descriptions based on the accompanying drawings for ease of understanding, and are not intended to limit the technical solution or the scope of protection claimed in this invention.

[0023] like Figures 1 to 6 The present invention illustrates a specific embodiment of an online loading fixture for a launch pad with a rotation function, comprising a support member 1, lower connecting rods 2, lower connecting plate 3, turntable bearing 4, upper connecting plate 5, upper connecting rods 6, hydraulic cylinders 7, and a loading member 8. Multiple lower connecting rods 2 are arranged in a centrally symmetrical manner, with their lower ends hinged to the support member 1 via pins, and their upper ends hinged to the lower connecting plate 3 via pins. The outer ring of the turntable bearing 4 is fixedly connected to the lower connecting plate 3, and its inner ring is fixedly connected to the upper connecting plate 5. Multiple upper connecting rods 6 are arranged in a centrally symmetrical manner, with their lower ends hinged to the upper connecting plate 5 via pins. Multiple hydraulic cylinders 7 are arranged, identical to those on the upper connecting rods 6, with their lower ends hinged to the upper ends of the upper connecting rods 6 via pins, and their upper ends hinged to the loading member 8 via pins.

[0024] The above structural configuration constitutes a simple, easy-to-assemble, adaptable, and highly reliable online loading fixture for launch pads with a rotation function. In practical applications, the support component 1, lower connecting rod 2, lower connecting plate 3, turntable bearing 4, upper connecting plate 5, upper connecting rod 6, hydraulic cylinder 7, and loading component 8 are first transported to the launch pad maintenance site and assembled into the loading fixture on a stable ground surface. Then, the launch pad is hoisted onto the support component 1, and each arm of the launch pad is connected to the loading component 8. Next, the hydraulic cylinder 7 applies a pulling force to the loading component 8, which then applies a downward load to the launch pad arms. By detecting the downward load, the load-bearing capacity of the launch pad can be tested. This invention improves the ease of assembly, disassembly, and transportation by using a loading fixture composed of a support 1, a lower connecting rod 2, a lower connecting plate 3, a turntable bearing 4, an upper connecting plate 5, an upper connecting rod 6, a hydraulic cylinder 7, and a loading component 8. This not only enables online loading tests of the launch pad but also significantly improves work efficiency and safety. By using the hydraulic cylinder 7 as the force-applying component, its synchronous extension or retraction during launch pad lifting and lowering adjustments effectively adapts to launch pad lifting movements while maintaining a constant downward load. The turntable bearing 4 allows the upper and lower parts of the loading fixture to rotate relative to each other, effectively accommodating launch pad rotation while maintaining a constant downward load. This enhances the loading fixture's adaptability to the launch pad and the stability and reliability of the loading test. It should be noted that the launch pad is existing equipment in the field, and its structure is well known to those skilled in the art. It includes a platform body, four liftable support feet, and four tiltable support arms. The platform body has a rotating section with a rectangular through-hole. The four support feet are located on the underside of the platform body, and the four support arms are mounted on the rotating section around the rectangular through-hole to support the aircraft. The aforementioned "lifting the launch pad onto support member 1" refers to the four support feet supporting the support member 1, with the lower connecting rod 2, lower connecting plate 3, turntable bearing 4, upper connecting plate 5, upper connecting rod 6, hydraulic cylinder 7, and loading member 8 passing through the rectangular through-hole of the rotating section.

[0025] As an optimization scheme, to reduce weight and volume while ensuring structural strength, this specific embodiment provides a first connecting seat 11 and four supporting beams 12 fixed on the first connecting seat 11, forming a cross-shaped structure. Each of the four supporting beams 12 has a lug 13, and the outer ends of each beam are provided with a flat plate 14 to support the launch platform. Correspondingly, four lower connecting rods 2 are provided, with their lower ends hinged to the lugs 13 on the four supporting beams 12. During loading tests, the four supporting feet of the launch platform are placed on the flat plates 14 of the four supporting beams 12. It should be noted that the support member 1 is not limited to the above-listed forms, and the number of lower connecting rods 2 is not limited to four; as long as a stable, centrally symmetrical structure can be formed, the technical objective of this invention can be achieved. The outer end of the supporting beam 12 refers to the end furthest from the center of the support member 1.

[0026] As an optimized solution, this specific embodiment provides a first connecting member 31 and four first ear plates 32 fixed on the first connecting member 31. A first flange 33 connecting the outer ring of the turntable bearing 4 is provided at the upper end of the first connecting member 31. The four first ear plates 32 are evenly distributed around the circumference of the first connecting member 31 and are hinged to the four lower connecting rods 2. This configuration of the lower connecting member 3 features a simple structure and stable reliability. Similarly, this specific embodiment provides a second connecting member 51 and four second ear plates 52 fixed on the second connecting member 51. A second flange 53 connecting the inner ring of the turntable bearing 4 is provided at the lower end of the second connecting member 51, and the four second ear plates 52 are evenly distributed around the circumference of the second connecting member 51. Correspondingly, four upper connecting rods 6 and four hydraulic cylinders 7 are provided, with the lower ends of the four upper connecting rods 6 hinged to the four second ear plates 52 of the upper connecting member 5. This configuration of the upper connecting member 5 also features a simple structure and stable reliability. It should be noted that the lower connecting plate 3 and the upper connecting plate 5 are not limited to the forms listed above, and the upper connecting rod 6 and the hydraulic cylinder 7 are not limited to four; as long as a stable centrally symmetrical structure can be formed, it is acceptable. Similar to the support member 1, this specific embodiment provides the loading member 8 with a second connecting seat 81 and four loading beams 82 fixed on the second connecting seat 81, and the second connecting seat 81 and the four loading beams 82 are combined to form a cross-shaped structure. Each of the four loading beams 82 has a support 83 corresponding to a hinged connection with one of the four hydraulic cylinders 7, and the outer ends of the four loading beams 82 are respectively provided with mounting brackets 84 for connecting to the launch pad arms. During loading tests, the four arms of the launch pad are connected to the mounting brackets 84 of the four loading beams 82. This configuration of the loading member 8 reduces weight and volume while ensuring structural strength. It should be noted that the loading member 8 is not limited to the forms listed above; as long as a stable centrally symmetrical structure can be formed, the technical objective of this invention can be achieved. The outer end of the loading beam 82 refers to the end furthest from the center of the loading member 8.

[0027] In a specific embodiment, the present invention employs a form constructed from welded plates for both the first connecting seat 11 and the support beam 12. The first connecting seat 11 is square, and the support beam 12 is fixed to the first connecting seat 11 by a first connecting plate 15 welded to its inner end and bolts. The lug 13 and the flat plate 14 are respectively fixed to the support beam 12 by welding. This arrangement allows the support member 1 to be disassembled into the first connecting seat 11 and four support beams 12, improving the convenience of disassembly, assembly, and transportation. The inner end of the support beam 12 refers to the end closest to the center of the support member 1. Similarly, in this specific embodiment, both the second connecting seat 81 and the loading beam 82 are constructed from welded plates. The second connecting seat 81 is square, and the loading beam 82 is fixed to the second connecting seat 81 by a second connecting plate 85 welded to its inner end and bolts. The support 83 includes a bracket plate 86 welded to the outer end of the loading beam 82. Two support plates 87 are fixed at intervals on the bracket plate 86. The lower half of the two support plates 87 is provided with shaft holes for the hinge cylinder 7. The clamping seat 84 includes a notch located in the middle of the two support plates 87. Limiting plates 88 are fixedly connected to the two support plates 87 on the upper and lower sides of the notch, respectively. The limiting plates 88 are provided with pin holes for connecting the launch pad arms. During the loading test, the rocket body support blocks of each launch pad arm are placed between the corresponding two limiting plates 88, and pins are inserted into the pin holes to complete the connection between each launch pad arm and the loading component 8. This configuration allows the loading component 8 to be disassembled into a second connecting seat 81 and four loading beams 82, which also improves the convenience of disassembly, assembly, and transportation. Furthermore, the mounting bracket 84 enhances the ease of connection between the launch pad's various arms and the loading component 8. The inner end of the aforementioned loading beam 82 refers to the end closest to the center of the loading component 8.

[0028] In a specific embodiment, the present invention employs welding for both the lower connecting plate 3 and the upper connecting plate 5. Specifically, the first connecting member 31 is cylindrical, with four first ear plates 32 welded to the outer peripheral wall of the first connecting member 31. A first horizontal stiffener 34 and a first vertical stiffener 35 are welded between adjacent first ear plates 32 to improve the structural strength and stability of the lower connecting plate 3. Similarly, the second connecting member 51 is cylindrical, with four second ear plates 52 welded to the outer peripheral wall of the second connecting member 51. A second horizontal stiffener 54 and a second vertical stiffener 55 are welded between adjacent second ear plates 52 to improve the structural strength and stability of the upper connecting plate 5. In practical applications, the present invention provides first U-shaped forks 21 at both ends of the lower connecting rod 2, which are hinged to the support ear 13 and the first ear plate 32 respectively. The upper connecting rod 6 is provided with second U-shaped forks 61 at both ends, which are hinged to the second ear plate 52 and the hydraulic cylinder 7 respectively, to improve structural stability and ease of assembly and disassembly.

[0029] Practical application has shown that the online loading fixture for launch pads with rotation function provided by this invention can produce the following beneficial effects: a) It can be quickly disassembled and assembled, facilitating transportation and solving the problem of not being able to perform loading tests during on-site maintenance of launch pads; b) It can achieve graded loading, gradually testing the loading capacity of the launch pad; c) The upper and lower parts can rotate arbitrarily through the turntable bearing, and the applied load remains unchanged during the rotation, realizing the load-bearing capacity test of the launch pad under rotation conditions; d) The hydraulic cylinder rises and falls synchronously with the launch pad, and the applied load remains unchanged during the rising and falling process, realizing the load-bearing capacity test of the launch pad under flatness adjustment conditions; e) It is compatible with the launch pad interface, facilitating installation and disassembly. It should be noted that loading in this article refers to applying a downward pressure load to the launch pad, and loading test refers to verifying the load-bearing capacity of the launch pad by detecting the downward pressure load on the basis of applying the downward pressure load. The online loading fixture for launch pads provided by this invention only involves applying a downward pressure load to the launch pad. The detection of the downward pressure load can be carried out in various ways, and its structural composition and detection methods are well known to those skilled in the art and are not the technical problems to be solved by this invention.

[0030] The above embodiments are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Various modifications made by those skilled in the art based on the technical solutions of the present invention without departing from the design concept of the present invention should fall within the scope of protection defined by the claims of the present invention.

Claims

1. An online loading fixture for a launch pad with a rotation function, characterized in that, The system includes a support member (1), a lower connecting rod (2), a lower connecting plate (3), a turntable bearing (4), an upper connecting plate (5), an upper connecting rod (6), a hydraulic cylinder (7), and a loading member (8). The lower connecting rod (2) is provided in multiple and is centrally symmetrically distributed. The lower ends of the multiple lower connecting rods (2) are respectively hinged to the support member (1) by pins. The upper ends of the multiple lower connecting rods (2) are respectively hinged to the lower connecting plate (3) by pins. The outer ring of the turntable bearing (4) is fixedly connected to the lower connecting plate (3), and the inner ring of the turntable bearing (4) is fixedly connected to the upper connecting plate (5). The upper connecting rod (6) is provided in multiple and is centrally symmetrically distributed. The lower ends of the multiple upper connecting rods (6) are respectively hinged to the upper connecting plate (5) by pins. The hydraulic cylinder (7) is provided in multiple and its lower ends are respectively hinged to the upper ends of the multiple upper connecting rods (6) one by one by pins. The upper ends of the multiple hydraulic cylinders (7) are respectively hinged to the loading member (8) by pins.

2. The online loading fixture for a launch pad with rotation function according to claim 1, characterized in that, The support member (1) includes a first connecting seat (11) and four support beams (12) fixed on the first connecting seat (11). The first connecting seat (11) and the four support beams (12) are combined to form a cross shape. Each of the four support beams (12) is provided with a lug (13). The outer ends of the four support beams (12) are provided with a flat plate (14) for supporting the launch platform. There are four lower connecting rods (2). The lower ends of the four lower connecting rods (2) are hinged to the lugs (13) on the four support beams (12).

3. The online loading fixture for a launch pad with rotation function according to claim 2, characterized in that, The lower connecting plate (3) includes a first connecting member (31) and four first ear plates (32) fixed on the first connecting member (31). The upper end of the first connecting member (31) is provided with a first flange (33) for connecting the outer ring of the turntable bearing (4). The four first ear plates (32) are evenly distributed along the circumference of the first connecting member (31) and are hinged to the four lower connecting rods (2).

4. The online loading fixture for a launch pad with rotation function according to claim 3, characterized in that, The upper connecting plate (5) includes a second connecting member (51) and four second ear plates (52) fixed on the second connecting member (51). The lower end of the second connecting member (51) is provided with a second flange (53) for connecting the inner ring of the turntable bearing (4). The four second ear plates (52) are evenly distributed along the circumference of the second connecting member (51). The upper connecting rod (6) and the oil cylinder (7) are provided with four of each. The lower ends of the four upper connecting rods (6) are hinged to the four second ear plates (52) of the upper connecting plate (5).

5. The online loading fixture for a launch pad with a rotation function according to claim 4, characterized in that, The loading component (8) includes a second connecting seat (81) and four loading beams (82) fixed on the second connecting seat (81). The second connecting seat (81) and the four loading beams (82) are combined to form a cross shape. Each of the four loading beams (82) is provided with a support (83) that is hinged to the four oil cylinders (7). The outer ends of the four loading beams (82) are provided with a mounting bracket (84) for connecting the launch pad support arm.

6. The online loading fixture for a launch pad with rotation function according to claim 5, characterized in that, The first connecting seat (11) and the support beam (12) are both made of welded plates. The first connecting seat (11) is square. The support beam (12) is fixed to the first connecting seat (11) by the first connecting plate (15) welded to its inner end and bolts. The lug (13) and the flat plate (14) are respectively fixed to the support beam (12) by welding.

7. The online loading fixture for a launch pad with rotation function according to claim 5, characterized in that, The second connecting seat (81) and the loading beam (82) are both made of welded plates. The second connecting seat (81) is square. The loading beam (82) is fixed to the second connecting seat (81) by a second connecting plate (85) welded to its inner end and bolts. The support (83) includes a bracket plate (86) welded to the outer end of the loading beam (82). Two support plates (87) are fixed at intervals on the bracket plate (86). The lower half of the two support plates (87) is provided with the shaft hole of the hinge cylinder (7). The card seat (84) includes a notch set in the middle of the two support plates (87). The upper and lower sides of the notch are respectively provided with limiting plates (88) fixedly connected to the two support plates (87). The limiting plates (88) are provided with pin holes for connecting the launch pad support arm.

8. The online loading fixture for a launch pad with rotation function according to claim 5, characterized in that, The first connector (31) is cylindrical, and the four first ear plates (32) are fixed to the outer peripheral wall of the first connector (31) by welding. A first horizontal stiffener (34) and a first vertical stiffener (35) are welded between adjacent first ear plates (32).

9. The online loading fixture for a launch pad with a rotation function according to claim 5, characterized in that, The second connector (51) is cylindrical, and the four second ear plates (52) are fixed to the outer peripheral wall of the second connector (51) by welding. A second horizontal stiffener (54) and a second vertical stiffener (55) are welded between adjacent second ear plates (52).

10. The online loading fixture for a launch pad with rotation function according to claim 5, characterized in that, The two ends of the lower connecting rod (2) are respectively hinged to the support lug (13) and the first lug plate (32) via the first U-shaped fork (21), and the two ends of the upper connecting rod (6) are respectively hinged to the second lug plate (52) and the oil cylinder (7) via the second U-shaped fork (61).

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