Working platform for vertical butt joint of carrier rocket star cover assembly and rocket body

Abstract

The invention discloses an operation platform for vertical butt joint of a carrier rocket star cover assembly and a rocket body. The operation platform at least comprises a fixed platform installed on an erecting arm, a first sliding platform and a second sliding platform. The fixed platform, the first sliding platform and the second sliding platform are each of an arc-shaped open-web truss symmetrical structure. The first sliding platform is arranged on the first fixed platform in a sliding manner, and the second sliding platform is arranged on the first sliding platform in a sliding manner; the fixed platform, the first sliding platform and the second sliding platform form an arc-shaped guide rail drawing structure, and the side, away from the ground, of the arc-shaped guide rail drawing structure is open and used for allowing operators to pass through.

Description

Technical Field

[0001] The present invention relates to the technical field of ground equipment for space launch vehicles, and in particular to an operating platform for vertically docking a star cover assembly and a rocket body of a launch vehicle. Background Art

[0002] Traditional launch vehicles generally employ either a one-horizontal-two-vertical test-and-launch model (horizontal transfer, vertical assembly, and vertical testing), or a three-vertical test-and-launch model (vertical assembly, vertical transfer, and vertical testing). Compared to the first two, launch vehicles employing a three-horizontal test-and-launch model (horizontal assembly, horizontal testing, and horizontal transfer) offer shorter testing cycles, improved economy, and faster launch organization. However, for spacecraft such as satellites and spacecraft unsuitable for horizontal assembly, the three-horizontal test-and-launch model requires vertical assembly of the starshade assembly. Because the docking surface is typically more than 50 meters above the ground, using an aerial work platform to provide the work platform presents challenges with stability and the ability to perform simultaneous operations at multiple locations around the circumference. Using a fixed service tower to provide a rotating work platform incurs high construction and maintenance costs.

[0003] Therefore, there is an urgent need to provide a platform with good stability, low cost and the ability to operate around the mounting surface of the launch vehicle. Summary of the Invention

[0004] In response to the above-mentioned technical problems in the related art, the present invention provides an operating platform for the vertical docking of the carrier rocket star cover assembly and the rocket body, which realizes the vertical docking operation guarantee of the star cover assembly in the three-horizontal and one-vertical test and launch mode of the carrier rocket, thereby expanding the capabilities of the carrier rocket in the three-horizontal test and launch mode.

[0005] The present invention provides a work platform for vertically docking a launch vehicle star cover assembly with a rocket body, and is used for vertical assembly of the star cover assembly. The work platform for vertically docking a launch vehicle star cover assembly with a rocket body of the present invention comprises at least a fixed platform installed on an erection arm, and a first sliding platform and a second sliding platform; the fixed platform, the first sliding platform and the second sliding platform all adopt an arc-shaped hollow truss symmetrical structure; the top of the hollow truss symmetrical structure is open, and the bottom is for workers to pass and work; the first sliding platform can be slidably set on the first fixed platform, and the second sliding platform can be slidably set on the first sliding platform; the fixed platform, the first sliding platform and the second sliding platform form an arc-shaped guide rail pulling structure. After the work platform is installed, the side away from the ground is set to be open for workers to pass.

[0006] In one embodiment, there are two first sliding platforms and two second sliding platforms respectively, each first sliding platform is symmetrically arranged on the fixed platform, and the second sliding platforms are symmetrically arranged on the corresponding first sliding platform; the fixed platform, the first sliding platform and the second sliding platform form a left-right symmetrical arc guide rail pulling structure.

[0007] In one embodiment, the fixed platform includes at least a first curved truss; a first guide rail is provided on both sides of the inner facade of the first curved truss, and the first sliding platform is provided with an outer wheel group matched with the first guide rail; the outer wheel group is embedded in the first guide rail, and the first sliding platform moves relative to the fixed platform by rolling along it.

[0008] In one embodiment, the first sliding platform includes at least a second curved truss; the second sliding platform includes at least a third curved truss; the outer wheel group is provided on both sides of the outer facade of the second curved truss, the inner wheel group is provided on both sides of the inner facade of the second curved truss, and the second guide rail matching the inner wheel group is provided on both sides of the outer facade of the third curved truss; the inner wheel group is embedded in the second guide rail, and the second sliding platform moves relative to the first sliding platform by rolling along it.

[0009] In one embodiment, pedals are provided at the bottoms of the first curved truss, the second curved truss, and the third curved truss to facilitate passage and operation of workers.

[0010] In one embodiment, a first recovery limit plate is provided at the circumferential middle position of the first arc truss, and a second recovery limit plate is provided at the end of the second arc truss that is connected to the first arc truss; the first recovery limit plate is used to limit the retraction of the first sliding platform; the second recovery limit plate is used to limit the retraction of the second sliding platform.

[0011] In one embodiment, the first arc truss is provided with a first deployment limit plate on both sides of the circumference; the second arc truss is provided with a second deployment limit plate on one side for docking with the first arc truss, and a third deployment limit plate on the other side; the third arc truss is provided with a fourth deployment limit plate on one side for docking with the second arc truss; the first sliding platform is pushed to extend the fixed platform through the outer wheel group under the guidance of the first guide rail until the first deployment limit plate contacts the second deployment limit plate and the extension action is stopped; the second sliding platform is pushed to extend the first sliding platform through the inner wheel group under the guidance of the second guide rail until the third deployment limit plate contacts the fourth deployment limit plate and the extension action is stopped.

[0012] In one embodiment, one side of the second sliding platform is slidably connected to the first sliding platform, and the other side is provided with a detachable protective door.

[0013] In one embodiment, the working platform for vertically docking the rocket star cover assembly and the rocket body of the present invention also includes an unfolding locking mechanism; the unfolding locking mechanism includes at least a first locking hole, a first lock, a second lock and a second locking hole; the first locking hole is arranged at a position 15° to 30° away from the end of the first guide rail docking with the outer wheel group, and the second locking hole is arranged on the side where the second guide rail docks with the inner wheel group; the first lock is arranged at the top of the side where the outer wheel group docks with the first guide rail, and the second lock is arranged at the top of the side where the inner wheel group docks with the second guide rail; after the first sliding platform is extended into position along the fixed platform, the first lock is inserted into the first locking hole to lock it; after the second sliding platform is extended into position along the first sliding platform, the second lock is inserted into the second locking hole to lock it.

[0014] In one embodiment, the working platform for vertical docking of the rocket star cover assembly and the rocket body of the present invention also includes a recovery locking mechanism; the recovery locking mechanism includes at least the first lock, the second lock, the second locking hole, the third locking hole, the fourth locking hole, the fifth locking hole, and the third lock and the fourth lock; the third locking hole is arranged on the first guide rail at the circumferential middle position of the first arc truss, and the fourth locking hole is arranged between the first locking hole and the third locking hole; the fifth locking hole is arranged on the side of the second guide rail close to the protective door; the third lock is arranged at the top of the inner wheel group close to the first lock, and the fourth lock is arranged at the top of the outer wheel group close to the second lock; the second sliding platform is withdrawn to the first sliding platform, and after the first sliding platform is withdrawn to the fixed platform, the third lock is inserted into the second locking hole to lock, the first lock is inserted into the third locking hole to lock, the fourth lock is inserted into the fourth locking hole to lock, and the second lock is inserted into the fifth locking hole to lock.

[0015] The working platform for vertically docking a launch vehicle's star shroud assembly with the rocket body according to an embodiment of the present invention can be detachably mounted on the erection equipment of a launch vehicle employing a three-horizontal-one-vertical test and launch mode, thereby enabling vertical assembly of the star shroud assembly. The working platform according to an embodiment of the present invention is characterized by ease of implementation, low cost, full coverage of the work surface, and excellent stability. Furthermore, the working platform can be removed from the erection equipment, making it suitable for launch vehicles employing only a pure three-horizontal test and launch mode.

[0016] Those skilled in the art will recognize additional features and advantages upon reading the detailed description and upon viewing the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 2 is a schematic diagram of the overall unfolded working platform according to an embodiment of the present invention.

[0019] Figure 2 The utility model relates to an erecting device for installing a working platform according to an embodiment of the present invention.

[0020] Figure 3 2 is an overall schematic diagram of the recovered working platform according to an embodiment of the present invention.

[0021] Figure 4 2 is a schematic structural diagram of a fixed platform according to an embodiment of the present invention.

[0022] Figure 5 It is a structural schematic diagram of the first sliding platform of an embodiment of the present invention.

[0023] Figure 6 It is a structural schematic diagram of the second sliding platform of an embodiment of the present invention.

[0024] Figure 7 It is a structural schematic diagram of the fixed platform of an embodiment of the present invention from another perspective.

[0025] Figure 8 It is a structural schematic diagram of the first sliding platform from another perspective of an embodiment of the present invention.

[0026] Figure 9 Schematic diagram of a protective door according to an embodiment of the present invention.

[0027] Figure 10 It is a schematic diagram of two connection blocks overlapped and docked in an embodiment of the present invention.

[0028] Figure 11 Schematic diagram of two connection blocks separated according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific embodiments. Spatial relationship terms such as "below", "below", "under", "low", "above", "on", "high", etc. are used to facilitate the description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or it can mean that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and should not be regarded as limitations. Similar terms represent similar elements throughout the description.

[0030] Because the docking surface for vertical assembly of a star shroud assembly is typically more than 50 meters above the ground, using an aerial work platform to provide a work platform presents issues such as poor stability and limited support for simultaneous operations at multiple locations around the circumference. Using a fixed service tower to provide a rotating work platform incurs high construction and maintenance costs. Therefore, the present invention provides a work platform for vertically docking a launch vehicle star shroud assembly with a rocket body, enabling the vertical assembly of the star shroud assembly.

[0031] See also Figure 1 、 Figure 2 and Figure 3 The present invention provides an operating platform for vertically docking a launch vehicle star cover assembly with a rocket body, which comprises at least a fixed platform 1 installed on a vertical arm 10, and a first sliding platform 2 and a second sliding platform 3. The fixed platform 1, the first sliding platform 2 and the second sliding platform 3 all adopt an arc-shaped hollow truss symmetrical structure. The top of the hollow truss symmetrical structure of the present invention is open, and its bottom is for workers to pass and work. Among them, the first sliding platform 2 is slidably arranged on the fixed platform 1, and the second sliding platform 3 is slidably arranged on the first sliding platform 2. The fixed platform 1, the first sliding platform 2 and the second sliding platform 3 can realize the deployment and recovery of the operating platform by sliding to change the positional relationship between each other, so that the fixed platform 1, the first sliding platform 2 and the second sliding platform 3 form an arc-shaped guide rail pulling structure.

[0032] That is, when the working platform is needed, the first sliding platform 2 is first driven to extend out of the fixed platform 1, and after it is extended into place, the second sliding platform 3 is driven to extend out from the first sliding platform 2 to form a working platform (such as Figure 1 When the working platform needs to be recovered, the second sliding platform 3 is first withdrawn to the first sliding platform 2, and then the first sliding platform is driven to be recovered to the fixed platform 1 after it is withdrawn to its position (as shown in FIG. Figure 3 shown).

[0033] In the above embodiment, the working platform can be mounted on the erection arm 10 via the supporting structure 101 .

[0034] See also Figure 1 In one embodiment, two first sliding platforms 2 and two second sliding platforms 3 are provided, each of which is symmetrically arranged on the fixed platform 1, and the second sliding platforms 3 are symmetrically arranged on the corresponding first sliding platforms 2. The fixed platform 1, the first sliding platform 2, and the second sliding platform 3 form a bilaterally symmetrical arc-shaped guide rail pulling structure.

[0035] The working platform for vertically docking the carrier rocket star cover assembly and the rocket body in an embodiment of the present invention is provided with two first sliding platforms and two second sliding platforms. When the working platform is unfolded, the entire working platform is connected to form a circular platform, and the rocket body is surrounded by the circular platform. Workers can pass and work along the circular platform.

[0036] See also Figure 1 、 Figure 4 、 Figure 5 and Figure 6 In the above embodiment, the fixed platform 1 includes at least a first curved truss 11. First guide rails 12 are provided on both sides of the inner facade of the first curved truss 11, and an outer wheel group 22 is provided on the outer facade of the first sliding platform 2 to match the first guide rails 12. The outer wheel group 22 is embedded in the first guide rail 12, and the first sliding platform 2 moves relative to the fixed platform 1 by rolling along it. There are four first guide rails 12, which are symmetrically distributed at high and low parts of the inner facade of the first curved truss 11. There are four groups of outer wheel groups 22, which are symmetrically distributed at high and low parts of the inner facade of the first sliding platform 2. The cross-section of the first guide rail 12 is a dovetail structure, which is used to guide the rolling of the outer wheel group 22.

[0037] It should be noted that the inner facades in this application refer to the two facades inside the holler truss, and the outer facades refer to the two facades outside the holler truss.

[0038] Furthermore, the first sliding platform 2 includes at least a second curved truss 21, and the second sliding platform 3 includes at least a third curved truss 31. An outer wheel group 22 is provided on both sides of the outer facade of the second curved truss 21, an inner wheel group 23 is provided on both sides of the inner facade of the second curved truss 21, and a second guide rail 32 matching the inner wheel group 23 is provided on both sides of the outer facade of the third curved truss 31. The inner wheel group 23 is embedded in the second guide rail 32 and moves the second sliding platform 3 relative to the first sliding platform 2 by rolling along it. There are four second guide rails 32 in total, symmetrically distributed at high and low locations on the outer facade of the third curved truss 31. The cross-section of the second guide rail 32 is a dovetail structure, which is used to guide the inner wheel group 23.

[0039] In the above embodiment, the first, second, and third curved trusses 11, 21, and 31 are all constructed from spliced metal pipes. Since the tops of the first, second, and third curved trusses 11, 21, and 31 are open after being installed on the erection arm 10 of the rocket body, the bottoms of the trusses are used for workers to pass through and work. To ensure safe passage and work under the trusses and reduce the weight of the work platform, a pedal 9 made of aluminum circular holes with convex and concave anti-slip plates can be installed at the bottom of each truss.

[0040] See also Figure 1 、 Figure 7 and Figure 8 In any of the above embodiments, a first recovery limit plate 13 is provided at the circumferential middle position of the first curved truss 11, and a second recovery limit plate 24 is provided at the end of the second curved truss 21 that is connected to the first curved truss 11. The first recovery limit plate 13 is used to contact and cooperate with the end face of the first sliding platform 2 to limit the withdrawal of the first sliding platform 2. The second recovery limit plate 24 is used to contact and cooperate with the end face of the second sliding platform 3 to limit the recovery of the second sliding platform 3. Specifically, first, during the recovery process of the second sliding platform 3, the first sliding platform 2 is withdrawn under the guidance of the second guide rail 32 through the inner wheel group 23 until the end face of the second sliding platform 3 contacts the second recovery limit plate 24 and the withdrawal action stops. Then, during the recovery process of the first sliding platform 2, the fixed platform 1 is withdrawn under the guidance of the first guide rail 12 through the outer wheel group 22 until the end face of the first sliding platform 2 contacts the first recovery limit plate 13 and the withdrawal action stops.

[0041] The first recovery and limiting plates 13 are comprised of four components, one on the left and one on the right, centered at the axial center of the first curved truss 11. The left and right first recovery and limiting plates each cooperate with the second recovery and limiting plates of the second curved truss on the same side to prevent the two second curved trusses from colliding.

[0042] See also Figure 1 、 Figure 4 、 Figure 5 and Figure 6In one embodiment, the first curved truss 11 is provided with first deployment limit plates 14 on both sides of the circumference. The second curved truss 21 is provided with a second deployment limit plate 25 on the side for docking with the first curved truss 11 and a third deployment limit plate 26 on the other side. The third curved truss 31 is provided with a fourth deployment limit plate 33 on the side for docking with the second curved truss 21. The second deployment limit plate 25 extends toward the outside of the inner facade of the second curved truss 21. When the first sliding platform 2 extends from the fixed platform 1, the first deployment limit plate 14 cooperates with the second deployment limit plate 25 to limit the maximum position of the first sliding platform 2 during deployment. The third deployment limit plate 26 extends toward the inside of the inner facade of the second curved truss 21. When the second sliding platform 3 extends from the first sliding platform 2, the third deployment limit plate 26 cooperates with the fourth deployment limit plate 33 to limit the maximum position of the second sliding platform 3 during deployment.

[0043] Specifically, the first sliding platform 2 is pushed, and the outer wheel assembly 22 extends out of the fixed platform 1 under the guidance of the first guide rail 12 until the first deployment limit plate 14 contacts the second deployment limit plate 25 and stops extending. The second sliding platform 3 is pushed, and the inner wheel assembly 23 extends out of the first sliding platform 2 under the guidance of the second guide rail 32 until the third deployment limit plate 26 contacts the fourth deployment limit plate 33 and stops extending.

[0044] See also Figure 4 、 Figure 5 、 Figure 6 and Figure 7 In the above embodiment, the first guide rail 12 can be divided into a first inner guide rail 121 provided on the inner side of the inner curved surface of the first curved truss 11, and a second inner guide rail 122 provided on the inner side of the outer curved surface of the first curved truss 11. The second guide rail 32 can be divided into a first outer guide rail 321 provided on the outer side of the inner curved surface of the third curved truss 31, and a second outer guide rail 322 provided on the outer side of the outer curved surface of the third curved truss 31. The first deployment limit plate 14 can be provided at the top of the side where the first inner guide rail 121 and the outer wheel group 22 are connected, and the second deployment limit plate 25 can be provided at the top of the side where the outer wheel group 22 and the first inner guide rail 121 are connected, and extend toward the outside of the inner facade of the second curved truss 21, so that the first deployment limit plate 14 and the second deployment limit plate 25 cooperate to limit the outer wheel group 22 from extending from the first guide rail 12 to the extreme position. The fourth deployment limit plate 33 can be set at the top of the side where the first outer guide rail 321 is connected to the inner wheel group 23, and the third deployment limit plate 26 can be set at the top of the side where the inner wheel group 23 is connected to the first outer guide rail 321, and extend toward the inner side of the inner facade of the second arc truss 21, so that the third deployment limit plate 26 and the fourth deployment limit plate 33 cooperate to limit the extreme position of the inner wheel group 23 when it extends from the second guide rail 32.

[0045] See also Figure 1 、 Figure 6 、 Figure 9 、 Figure 10 and Figure 11 In one embodiment, one side of the second sliding platform 3 is slidably connected to the first sliding platform 2, and the other side (the protruding end) is provided with a removable protective door 34. The protective door 34 is removably mounted to the third curved truss 31 via a connecting block 35. The connecting block 35 is fixedly mounted to the end of the first outer guide rail 321 and the second outer guide rail 322 away from the first sliding platform 2. The end surfaces of each connecting block 35 facing each other are provided with a slot 350, and the protective door 34 is provided with an ear shaft 341 on both sides that matches the slot 350. By installing the ear shaft 341 into the slot 350, the protective door 34 can be mounted to the third curved truss 31 via the connecting block 35.

[0046] In this embodiment of the present invention, two second sliding platforms 3 are provided, each with a protective door 34 at its protruding end. Since the protruding ends of the two second sliding platforms 3 can dock when the work platform of this embodiment of the present invention is fully deployed, the protective door can be removed after the work platforms are fully deployed and docked, leaving the entire work platform circumferentially connected.

[0047] See also Figure 10 and Figure 11 For example, the connection blocks provided at the protruding ends of the two second sliding platforms can be provided separately, specifically divided into a first connection block 351 provided at the protruding end of one of the second sliding platforms, and a second connection block 352 provided at the protruding end of the other second sliding platform. The first connection block 351 extends to provide a high boss 3511, and the second connection block 352 extends to provide a low boss 3521. Both the high boss 3511 and the low boss 3521 are provided with longitudinal pin holes 3510. When the platform is fully deployed and the protruding ends of the two second sliding platforms are docked, the pin holes of the high boss and the low boss coincide with each other, and the pin shaft is passed through the pin holes to connect and fix them (such as Figure 10 After the connection is completed, the protective door can be disassembled as needed. When the work platform needs to be recovered, the pin shaft is removed after the protective door is installed and the second sliding platform is driven to retract, so that the first connecting block 351 and the second connecting block 352 are separated (as shown). Figure 11 shown).

[0048] See also Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8The working platform for vertically docking the carrier rocket star cover assembly with the rocket body of the present invention also includes an unfolding locking mechanism for locking the working platform after it is unfolded. The unfolding locking mechanism includes at least a first locking hole 41, a first locker 42, a second locker 43, and a second locking hole 44. The first locking hole 41 is provided at a position 15° to 30° away from the end of the first guide rail 12 docking with the outer wheel group 22, and the second locking hole 44 is provided on the side where the second guide rail 32 docks with the inner wheel group 23. The first locker 42 is provided at the top of the side where the outer wheel group 22 docks with the first guide rail 12, and the second locker 43 is provided at the top of the side where the inner wheel group 23 docks with the second guide rail 32.

[0049] In order to facilitate the setting of the position of the unfolding locking mechanism and the limit plate, the first locking hole 41 can be set at a position 20° away from the end of the second inner guide rail 122 that is connected to the outer wheel group 22, the second locking hole 44 is set at the top of the second outer guide rail 322, the first lock 42 is set at the top of the side where the outer wheel group 22 is connected to the second inner guide rail 122, and the second lock 43 is set at the top of the inner wheel group 23 on the other side.

[0050] Specifically, after the first sliding platform is extended along the fixed platform, the first lock 42 is inserted into the first locking hole 41 and locked, placing the first sliding platform and the fixed platform in an extended and locked state, preventing the first sliding platform from moving. After the second sliding platform is extended along the first sliding platform, the second lock 43 is inserted into the second locking hole 44 and locked, locking the second sliding platform to the first sliding platform and preventing them from moving.

[0051] See also Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The working platform for vertically docking the launch vehicle star cover assembly with the rocket body of the present invention also includes a recovery locking mechanism for locking the working platform after recovery. The recovery locking mechanism includes at least a first lock 42, a second lock 43, a second locking hole 44, a third locking hole 45, a fourth locking hole 46, a fifth locking hole 47, a third lock 48, and a fourth lock 49. The third locking hole 45 is provided on the first guide rail 12 at the circumferential middle position of the first arc-shaped truss 11, and the fourth locking hole 46 is provided between the first locking hole 41 and the third locking hole 45. The fifth locking hole 47 is provided on the side of the second guide rail 32 near the protective door 34. The third lock 48 is provided at the top of the inner wheel group 23 near the first lock 42, and the fourth lock 49 is provided at the top of the outer wheel group 22 near the second lock 43.

[0052] In the above embodiment, the third locking hole 45 and the fourth locking hole 46 can be set at corresponding positions of the second inner guide rail 122, the fifth locking hole 47 can be set on the side of the second outer guide rail 322 close to the protective door 34, the third lock 48 is set close to the first lock 42 at the top of the side where the inner wheel group 23 and the second outer guide rail 322 are connected, and the fourth lock 49 is set at the top of the outer wheel group 22 on the other side.

[0053] Specifically, after the second sliding platform is withdrawn to the first sliding platform, and the first sliding platform is withdrawn to the fixed platform, the third locker 48 is inserted into the second locking hole 44 and locked, the first locker 42 is inserted into the third locking hole 45 and locked, the fourth locker 49 is inserted into the fourth locking hole 46 and locked, and the second locker 43 is inserted into the fifth locking hole 47 and locked, thereby putting the entire working platform into a recovered locked state.

[0054] See also Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 The deployment process of the working platform for vertically docking the carrier rocket star cover assembly and the rocket body of the present invention is as follows:

[0055] Unlock the first lock 42, the second lock 43, the third lock 48, and the fourth lock 49, and push the first sliding platform 2. Guided by the first guide rail 12, the outer wheel group 22 extends the first sliding platform 2 out of the fixed platform 1 until the second expansion limit plate 25 of the first sliding platform 2 contacts and limits the first expansion limit plate 14 of the fixed platform 1. Insert the first lock 42 into the first locking hole 41 and lock it, so that the first sliding platform and the fixed platform are in an expanded and locked state, preventing the first sliding platform from moving. Continue to push the second sliding platform 3. Guided by the second guide rail 32, the inner wheel group 23 extends the first sliding platform 2 until the fourth expansion limit plate 33 of the second sliding platform 3 contacts and limits the third expansion limit plate 26 of the first sliding platform 2. Then lock the second lock 43 with the second locking hole 44 of the second sliding platform 3 to prevent the second sliding platform 3 from moving out of the first sliding platform 2. After unlocking the working platform and fully unfolding it into place, the pin holes 3510 of the first connecting block 351 and the second connecting block 352 of the second sliding platform 3 coincide with each other, and a pin shaft is used to pass through the pin holes for connection. At this time, the protective door 34 can be removed to make the entire vertical docking working platform for the star cover assembly connected.

[0056] The recovery process of the working platform for vertically docking the carrier rocket star cover assembly and the rocket body of the present invention is as follows:

[0057] Restore the installation of the protective door 34, remove the pin, unlock the first lock 42 and the second lock 43 of the first sliding platform 2, and withdraw the second sliding platform 3 until the end surface of the second guide rail 32 contacts the second recovery limit plate 24. Continue to withdraw the first sliding platform 2 until the end surface of the first sliding platform 2 contacts the first recovery limit plate 13. Insert the third lock 48 into the second locking hole 44 to lock it, insert the first lock 42 into the third locking hole 45 to lock it, then insert the fourth lock 49 into the fourth locking hole 46 to lock it, and insert the second lock 43 into the fifth locking hole 47 to lock it. The entire work platform is in the recovery and locking state.

[0058] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A work platform for vertically docking a launch vehicle's satellite cover assembly with a rocket body, used for vertical assembly of the satellite cover assembly, characterized in that: It at least comprises a fixed platform mounted on the erection arm, and a first sliding platform and a second sliding platform; The fixed platform, the first sliding platform, and the second sliding platform all adopt an arc-shaped Vierendeel truss symmetrical structure; the top of the Vierendeel truss symmetrical structure is open, and the bottom is for workers to pass and work; the first sliding platform is slidably arranged on the first fixed platform, and the second sliding platform is slidably arranged on the first sliding platform; The fixed platform, the first sliding platform and the second sliding platform form an arc-shaped guide rail pulling structure.

2. The working platform according to claim 1, characterized in that: There are two first sliding platforms and two second sliding platforms respectively, each first sliding platform is symmetrically arranged on the fixed platform, and each second sliding platform is symmetrically arranged on the corresponding first sliding platform; The fixed platform, the first sliding platform and the second sliding platform form a bilaterally symmetrical arc-shaped guide rail pulling structure.

3. The working platform according to claim 2, characterized in that: The fixed platform comprises at least a first arc-shaped truss; First guide rails are provided on both sides of the inner facade of the first curved truss, and the first sliding platform is provided with an outer wheel group matched with the first guide rail; the outer wheel group is embedded in the first guide rail, and the first sliding platform moves relative to the fixed platform by rolling along it.

4. The working platform according to claim 3, characterized in that: The first sliding platform includes at least a second curved truss; the second sliding platform includes at least a third curved truss; The outer wheel group is provided on both sides of the outer facade of the second curved truss, the inner wheel group is provided on both sides of the inner facade of the second curved truss, and the second guide rail matching the inner wheel group is provided on both sides of the outer facade of the third curved truss; the inner wheel group is embedded in the second guide rail, and the second sliding platform is moved relative to the first sliding platform by rolling along it.

5. The working platform according to claim 4, characterized in that: The bottoms of the first curved truss, the second curved truss and the third curved truss are all paved with pedals to facilitate the passage and operation of workers.

6. The working platform according to any one of claims 3 to 5, characterized in that: A first recovery limit plate is provided at the circumferential middle position of the first arc-shaped truss, and a second recovery limit plate is provided at one end of the second arc-shaped truss that is connected to the first arc-shaped truss; the first recovery limit plate is used to limit the withdrawal of the first sliding platform; The second recovery limiting plate is used to limit the withdrawal of the second sliding platform.

7. The working platform according to claim 6, characterized in that: The first arc-shaped truss is provided with a first expansion limit plate on both sides of the circumference; the second arc-shaped truss is provided with a second expansion limit plate on one side for docking with the first arc-shaped truss, and a third expansion limit plate on the other side; the third arc-shaped truss is provided with a fourth expansion limit plate on one side for docking with the second arc-shaped truss; Pushing the first sliding platform to extend out of the fixed platform under the guidance of the first guide rail via the outer wheel assembly until the first deployment limit plate contacts the second deployment limit plate and stops extending; The second sliding platform is pushed, and the first sliding platform is extended out of the inner wheel group under the guidance of the second guide rail until the third deployment limit plate contacts the fourth deployment limit plate and stops extending.

8. The working platform according to claim 7, characterized in that: One side of the second sliding platform is slidably connected to the first sliding platform, and the other side is provided with a detachable protective door.

9. The working platform according to claim 8, characterized in that: Also included is a deployment locking mechanism; The deployment locking mechanism includes at least a first locking hole, a first lock, a second lock, and a second locking hole; the first locking hole is arranged at a position 15° to 30° away from the end of the first guide rail that is connected to the outer wheel group, and the second locking hole is arranged on the side where the second guide rail is connected to the inner wheel group; the first lock is arranged at the top of the side where the outer wheel group is connected to the first guide rail, and the second lock is arranged at the top of the side where the inner wheel group is connected to the second guide rail; After the first sliding platform is extended into position along the fixed platform, the first locker is inserted into the first locking hole and locked; after the second sliding platform is extended into position along the first sliding platform, the second locker is inserted into the second locking hole and locked.

10. The working platform according to claim 9, characterized in that: Also included is a retraction locking mechanism; The recovery locking mechanism includes at least the first lock, the second lock, the second locking hole, the third locking hole, the fourth locking hole, the fifth locking hole, and the third lock and the fourth lock; the third locking hole is provided on the first guide rail at the circumferential middle position of the first arc-shaped truss, the fourth locking hole is provided between the first locking hole and the third locking hole; the fifth locking hole is provided on the side of the second guide rail close to the protective door; The third locker is arranged on the top of the inner wheel group close to the first locker, and the fourth locker is arranged on the top of the outer wheel group close to the second locker; The second sliding platform is withdrawn to the first sliding platform. After the first sliding platform is withdrawn to the fixed platform, the third locker is inserted into the second locking hole and locked. The first locker is inserted into the third locking hole and locked. The fourth locker is inserted into the fourth locking hole and locked. The second locker is inserted into the fifth locking hole and locked.

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