Ablation protection structure for erecting frame rotating shaft

Abstract

The utility model provides an ablation protection structure for an erecting frame rotating shaft, and relates to the technical field of rocket launching supporting devices.The structure comprises an upper-layer protective cover, a middle-layer protective cover, a lower-layer protective cover and a supporting shaft, and the middle-layer protective cover and the lower-layer protective cover are hinged through the supporting shaft; one end of the upper-layer protective cover is fixedly connected with the rocker arm, and the other end is lapped with the middle-layer protective cover; one end of the middle-layer protective cover is lapped with the upper-layer protective cover, and the other end is lapped with the lower-layer protective cover; the lower-layer protective cover is fixedly connected to the erecting support frame; and when the rocker arm is parallel to the erecting support frame, the upper-layer protective cover, the middle-layer protective cover and the lower-layer protective cover form a cover body for accommodating a rotating shaft structure of the erecting frame in an unfolded state. According to the protection device, the erecting frame rotating shaft is protected, and the erecting frame rotating shaft is prevented from being ablated by rocket tail flame.

Description

Technical Field

[0001] The present application relates to the technical field of rocket launch support devices, and in particular to an ablation protection structure for a rotary shaft of a launch frame. Background Art

[0002] The rocket adopts a three-horizontal-one-vertical launch method, and an erection frame is needed to erect the rocket from a horizontal state to a vertical state, waiting for ignition and launch. The erection frame's rotation axis is located at the tail of the erection support, and the erection frame is connected to the erection rocker arm, which drives the erection frame to rotate around the rotation axis. Because the rotation axis is close to the launch pad, it will be burned by the rocket's tail flame when the rocket is launched, so the rotation axis needs to be protected.

[0003] The existing patent publication number is: CN116853539A, which discloses a rocket erection frame flip docking device, which includes a flip docking base, a flip docking block, a rotating assembly, an erection cylinder assembly and a hydraulic chuck mechanism. However, there is no protection for the rotating assembly, and the rotating assembly will be burned by the rocket tail flame.

[0004] Therefore, the technical problem that urgently needs to be solved is: how to protect the rotating shaft of the erection frame to prevent the rotating shaft of the erection frame from being burned by the rocket tail flame. Utility Model Content

[0005] The purpose of the present application is to provide an ablation protection structure for a rotating shaft of an erection frame, so as to protect the rotating shaft of the erection frame and prevent the rotating shaft of the erection frame from being ablated by a rocket tail flame.

[0006] To achieve the above-mentioned purpose, the present application provides an ablation protection structure for a rotary shaft of a vertical frame, the structure comprising: an upper protective cover, a middle protective cover, a lower protective cover and a support shaft.

[0007] The middle protective cover and the lower protective cover are hinged via the support shaft;

[0008] One end of the upper protective cover is fixedly connected to the rocker arm, and the other end is overlapped with the middle protective cover;

[0009] One end of the middle protective cover is overlapped with the upper protective cover, and the other end is overlapped with the lower protective cover;

[0010] The lower protective cover is fixedly connected to the erecting support frame;

[0011] When the rocker arm is parallel to the erection support frame, the upper protective cover, the middle protective cover and the lower protective cover form a cover body that accommodates the rotating shaft structure of the erection frame in the unfolded state;

[0012] After the rocker arm rotates, it drives the upper protective cover to rotate, and the upper protective cover drives the middle protective cover to rotate;

[0013] When the rocker arm is perpendicular to the erecting support frame, the upper protective cover, the middle protective cover and the lower protective cover overlap, and the upper protective cover is covered on the outside of the middle protective cover; the middle protective cover is covered on the outside of the lower protective cover.

[0014] As described above, the ablation protection structure for the rotating shaft of the erecting frame, wherein the support shaft and the rotating shaft structure of the erecting frame are coaxial.

[0015] The ablation protection structure for the rotary shaft of the erection frame as described above, wherein the upper protective cover has a first upper edge flange and a first lower edge flange;

[0016] The first upper edge flange and the first lower edge flange are respectively arranged at the two end edges of the upper protective cover;

[0017] The first upper edge flange is fixedly connected to the rocker arm;

[0018] The first lower edge flange overlaps the middle layer protective cover.

[0019] The ablation protection structure for the rotary shaft of the erection frame as described above, wherein the middle layer protection cover has a second upper edge flange and a second lower edge flange;

[0020] The second upper edge flange and the second lower edge flange are respectively arranged at the two end edges of the middle protective cover;

[0021] The second upper edge flange overlaps the first lower edge flange;

[0022] The second lower edge flange overlaps the lower protective cover.

[0023] The ablation protection structure for the rotary shaft of the erection frame as described above, wherein the lower protective cover has a third upper edge flange and a third lower edge flange;

[0024] The third upper edge flange and the third lower edge flange are respectively arranged at the two end edges of the lower protective cover;

[0025] The third upper edge flange overlaps the second lower edge flange;

[0026] The third lower edge flange is fixedly connected to the erecting support frame.

[0027] The ablation protection structure for the rotary shaft of the erection frame as described above, wherein the first upper edge flange is folded outward along the edge of the upper protective cover, and the first lower edge flange is folded inward along the edge of the upper protective cover;

[0028] The second upper edge flange is folded outward along the edge of the middle layer protective cover, and the second lower edge flange is folded inward along the edge of the middle layer protective cover;

[0029] The third upper edge flange is folded outward along the edge of the lower protective cover, and the third lower edge flange is folded inward along the edge of the lower protective cover;

[0030] The first lower edge flange overlaps the second upper edge flange;

[0031] The second lower edge flange overlaps the third upper edge flange.

[0032] As described above, the ablation protection structure for the rotating shaft of the erecting frame, during the erection process of the rocker arm, drives the upper protective cover to rotate, and after the middle protective cover rotates around the support shaft with the upper protective cover under the action of gravity to a position overlapping with the lower protective cover, the upper protective cover continues to rotate around the support shaft with the rocker arm, and when the rocker arm is erected to be perpendicular to the erection support frame, the three protective covers overlap.

[0033] As described above, the ablation protection structure for the rotating shaft of the erecting frame, wherein, during the process of the rocker arm returning to the level, the upper protective cover is driven to rotate around the support shaft, and after the upper protective cover is rotated until its lower edge flange overlaps the upper edge of the middle protective cover, the upper protective cover drives the middle protective cover to rotate around the support shaft, and when the middle protective cover rotates around the support shaft until the rocker arm is parallel to the erecting support frame, the lower edge of the middle protective cover overlaps the upper edge of the lower protective cover, and the entire protection structure is in a sealed state.

[0034] The ablation protection structure for the rotary shaft of the erection frame as described above, wherein the upper protection cover, the middle protection cover and the lower protection cover each include a first side protection plate, a second side protection plate and a protection panel;

[0035] The first side protection plate and the second side protection plate are fixedly connected to two ends of the protection panel.

[0036] The ablation protection structure for the rotary shaft of the erection frame as described above, wherein the support shaft comprises a first support shaft and a second support shaft;

[0037] The first support shaft is connected to the first side protection plate of the middle protection cover and the first side protection plate of the lower protection cover;

[0038] The second supporting shaft is connected inside the second side protective plate of the middle protective cover and the second side protective plate of the lower protective cover.

[0039] The beneficial effects achieved by this application are as follows:

[0040] (1) The ablation protection structure of the present application covers the entire rotating shaft structure of the erection frame inside thereof to prevent the rocket tail flame from ablating the rotating shaft structure of the erection frame.

[0041] (2) The protective panel of the present application is an arc-shaped panel. When the rocket is launched, the flame at the tail of the rocket impacts the arc surface of the protective cover. The arc surface withstands the impact force better than the flat surface, and plays a good role in protecting the vertical frame rotating shaft structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For those skilled in the art, other drawings can also be obtained based on these drawings.

[0043] Figure 1 This is a schematic diagram of an ablation protection structure for a rotary shaft of an erecting frame installed on an erecting support frame and a rocker arm according to an embodiment of the present application.

[0044] Figure 2 for Figure 1 Schematic diagram of the AA section.

[0045] Figure 3 It is a schematic diagram of an ablation protection structure for a rotary shaft of a vertical frame according to an embodiment of the present application.

[0046] Figure 4 This is a schematic structural diagram of the upper protective cover according to an embodiment of the present application.

[0047] Figure 5 This is a schematic structural diagram of the middle layer protective cover of an embodiment of the present application.

[0048] Figure 6 This is a schematic diagram of the structure of the lower protective cover according to an embodiment of the present application.

[0049] Figure 7 It is a schematic diagram of the overlap of an ablation protection structure for a rotary shaft of a vertical frame according to an embodiment of the present application.

[0050] Figure 8 for Figure 7 Schematic diagram of the A1-A1 section.

[0051] Fig. 9 for Figure 7 Schematic diagram of the A2-A2 section.

[0052] Figure markings: 1-rocker arm; 2-erecting frame rotating shaft structure; 3-erecting support frame; 4-ablation protection structure; 5-upper protective cover; 6-middle protective cover; 7-lower protective cover; 8-support shaft; 51-first upper edge flange; 52-first lower edge flange; 61-second upper edge flange; 62-second lower edge flange; 63-middle protective cover connecting hole; 71-third upper edge flange; 72-third lower edge flange; 73-lower protective cover connecting hole. DETAILED DESCRIPTION

[0053] The following is a clear and complete description of the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0054] like Figure 1-9 As shown, the present application provides an ablation protection structure 4 for the erection frame rotation axis, which covers the erection frame rotation axis structure 2 as a whole inside to prevent the rocket tail flame from ablation of the erection frame rotation axis structure 2. The ablation protection structure 4 can also move synchronously with the rocker arm 1 during the rocket erection process. The structure comprises: an upper protective cover 5, a middle protective cover 6, a lower protective cover 7 and a support shaft 8, wherein the middle protective cover 6 and the lower protective cover 7 are hingedly connected through the support shaft 8; one end of the upper protective cover 5 is fixedly connected to the rocker arm 1, and the other end is overlapped with the middle protective cover 6; one end of the middle protective cover 6 is overlapped with the upper protective cover 5, and the other end is overlapped with the lower protective cover 7; the lower protective cover 7 is fixedly connected to the erecting support frame 3; when the rocker arm 1 is parallel to the erecting support frame 3, the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 form a cover body which internally accommodates the rotating shaft structure 2 of the erecting frame in the unfolded state; after the rocker arm 1 rotates, it drives the upper protective cover 5 to rotate, and the upper protective cover 5 drives the middle protective cover 6 to rotate; when the rocker arm 1 is perpendicular to the erecting support frame 3, the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 overlap, and the upper protective cover 5 is covered on the outside of the middle protective cover 6; the middle protective cover 6 is covered on the outside of the lower protective cover 7.

[0055] As a specific embodiment of the utility model, the support shaft 8 is coaxial with the erection frame rotating shaft structure 2. After the rocker arm 1 rotates, it can drive the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 of the ablation protection structure 4 to be unfolded as a whole or the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 to overlap each other.

[0056] like Figure 3 , 4As shown in Figures 7 and 8, the upper protective cover 5 has a first upper edge flange 51 and a first lower edge flange 52; the first upper edge flange 51 and the first lower edge flange 52 are respectively arranged on the two end edges of the upper protective cover 5; the first upper edge flange 51 is fixedly connected to the rocker arm 1; the first lower edge flange 52 overlaps the middle protective cover 6.

[0057] like Figure 3 , 5 As shown in 7, the middle protective cover 6 has a second upper edge flange 61 and a second lower edge flange 62; the second upper edge flange 61 and the second lower edge flange 62 are respectively arranged on the two end edges of the middle protective cover 6; the second upper edge flange 61 overlaps with the first lower edge flange 52; the second lower edge flange 62 overlaps with the lower protective cover 7.

[0058] like Figure 3 , 6 As shown in 7, the lower protective cover 7 has a third upper edge flange 71 and a third lower edge flange 72; the third upper edge flange 71 and the third lower edge flange 72 are respectively arranged on the two end edges of the lower protective cover 7; the third upper edge flange 71 overlaps the second lower edge flange 62; the third lower edge flange 72 is fixedly connected to the erecting support frame 3.

[0059] like Figure 3-9 As shown, the first upper edge flange 51 is folded outward along the edge of the upper protective cover 5, and the first lower edge flange 52 is folded inward along the edge of the upper protective cover 5; the second upper edge flange 61 is folded outward along the edge of the middle protective cover 6, and the second lower edge flange 62 is folded inward along the edge of the middle protective cover 6; the third upper edge flange 71 is folded outward along the edge of the lower protective cover 7, and the third lower edge flange 72 is folded inward along the edge of the lower protective cover 7; when the erecting frame is in a horizontal state, that is, the rocker arm 1 is parallel to the erecting support frame 3, the three layers of protective covers (upper protective cover 5, middle protective cover 6 and lower protective cover 7) overlap each other, the first lower edge flange 52 overlaps the second upper edge flange 61; the second lower edge flange 62 overlaps the third upper edge flange 71, so that the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 are unfolded to form a space that wraps the rotating shaft structure 2 of the erecting frame.

[0060] As a specific embodiment of the utility model, the upper protective cover 5 is fixedly mounted on the rocker arm 1 by bolts. Preferably, the first upper edge flange 51 of the upper protective cover 5 is fixedly mounted on the rocker arm 1 by bolts to ensure the fixed connection between the upper protective cover 5 and the rocker arm 1.

[0061] As a specific embodiment of the utility model, the lower protective cover 7 is fixedly mounted on the erecting support frame 3 by bolts. Preferably, the third lower edge flange 72 of the lower protective cover 7 is fixedly mounted on the erecting support frame 3 by bolts to ensure the fixed connection between the lower protective cover 7 and the erecting support frame 3.

[0062] like Figure 3-7 As shown, the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 all include a first side protective plate, a second side protective plate and a protective panel; the first side protective plate and the second side protective plate are fixedly connected at both ends of the protective panel.

[0063] As a specific embodiment of the utility model, the support shaft 8 includes a first support shaft and a second support shaft; the first support shaft is connected to the first side protective plate of the middle protective cover 6 and the first side protective plate of the lower protective cover 7; the second support shaft is connected to the second side protective plate of the middle protective cover 6 and the second side protective plate of the lower protective cover 7.

[0064] like Figure 5 and 6 As shown, the first side protection plate and the second side protection plate of the middle protection cover 6 are both provided with a middle protection cover connection hole 63, and the first side protection plate and the second side protection plate of the lower protection cover 7 are both provided with a lower protection cover connection hole 73. The first support shaft passes through the middle protection cover connection hole 63 and the lower protection cover connection hole 73, and the second support shaft passes through the middle protection cover connection hole 63 and the lower protection cover connection hole 73. Limit blocks are set at both ends of the first support shaft to prevent the first support shaft from escaping from the middle protection cover connection hole 63 and the lower protection cover connection hole 73; limit blocks are set at both ends of the second support shaft to prevent the second support shaft from escaping from the middle protection cover connection hole 63 and the lower protection cover connection hole 73. The middle protection cover 6 can rotate relative to the lower protection cover 7 around the first support shaft and the second support shaft.

[0065] Preferably, the protective panel is an arc-shaped panel. When the rocket is launched, the flame at the tail of the rocket impacts the arc surface of the protective cover, and the arc surface bears the impact force better than the plane force, which plays a good role in protecting the vertical frame rotating shaft structure 2.

[0066] As a specific embodiment of the present utility model, during the erection process of the rocker arm 1, the upper protective cover 5 is driven to rotate. Under the action of gravity, the middle protective cover 6 rotates around the support shaft 8 with the upper protective cover 5 to an overlapping position with the lower protective cover 7. Then, the upper protective cover 5 continues to rotate around the support shaft 8 with the rocker arm 1. When the rocker arm 1 is erected to be perpendicular to the erection support frame 3 (that is, when the rocker arm 1 is erected 90°), the three protective covers overlap, that is, the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 overlap together.

[0067] As a specific embodiment of the utility model, during the leveling process of the rocker arm 1, the upper protective cover 5 is driven to rotate around the support shaft 8. After the upper protective cover 5 is rotated until its lower edge flange overlaps the upper edge of the middle protective cover 6, the upper protective cover 5 drives the middle protective cover 6 to rotate around the support shaft 8. When the middle protective cover 6 rotates around the support shaft 8 until the rocker arm 1 is parallel to the erection support frame 3, the lower edge of the middle protective cover 6 overlaps the upper edge of the lower protective cover 7, and the entire protective structure is in a sealed state, that is, the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 are unfolded in a sealed state, thereby protecting the erection frame rotating shaft structure inside the upper protective cover 5, the middle protective cover 6 and the lower protective cover 7 from being burned by the rocket tail flame.

[0068] The beneficial effects achieved by this application are as follows:

[0069] (1) The ablation protection structure of the present application covers the entire rotating shaft structure of the erection frame inside thereof to prevent the rocket tail flame from ablating the rotating shaft structure of the erection frame.

[0070] (2) The protective panel of the present application is an arc-shaped panel. When the rocket is launched, the flame at the tail of the rocket impacts the arc surface of the protective cover. The arc surface withstands the impact force better than the flat surface, and plays a good role in protecting the vertical frame rotating shaft structure.

[0071] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0072] In the description of the present application, the word "for example" is used to mean "used as an example, illustration or explanation". Any embodiment described as "for example" in the present application is not necessarily to be construed as being more preferred or advantageous than other embodiments. In order to enable any technician in the field to implement and use the utility model, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the utility model can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details that make the description of the utility model obscure. Therefore, the utility model is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in the present application.

[0073] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. An ablation protection structure for a rotary shaft of a vertical frame, characterized in that: The structure includes: an upper protective cover, a middle protective cover, a lower protective cover and a supporting shaft. The middle protective cover and the lower protective cover are hinged via the support shaft; One end of the upper protective cover is fixedly connected to the rocker arm, and the other end is overlapped with the middle protective cover; One end of the middle protective cover is overlapped with the upper protective cover, and the other end is overlapped with the lower protective cover; The lower protective cover is fixedly connected to the erecting support frame; When the rocker arm is parallel to the erection support frame, the upper protective cover, the middle protective cover and the lower protective cover form a cover body that accommodates the rotating shaft structure of the erection frame in the unfolded state; After the rocker arm rotates, it drives the upper protective cover to rotate, and the upper protective cover drives the middle protective cover to rotate; When the rocker arm is perpendicular to the erecting support frame, the upper protective cover, the middle protective cover and the lower protective cover overlap, and the upper protective cover is covered on the outside of the middle protective cover; the middle protective cover is covered on the outside of the lower protective cover.

2. The ablation protection structure for the rotary shaft of the erection frame according to claim 1, characterized in that: The supporting shaft is coaxial with the rotating shaft structure of the erecting frame.

3. The ablation protection structure for the rotary shaft of the erection frame according to claim 2, characterized in that: The upper protective cover has a first upper edge flange and a first lower edge flange; The first upper edge flange and the first lower edge flange are respectively arranged at the two end edges of the upper protective cover; The first upper edge flange is fixedly connected to the rocker arm; The first lower edge flange overlaps the middle layer protective cover.

4. The ablation protection structure for the rotary shaft of the erection frame according to claim 3, characterized in that: The middle protective cover has a second upper edge flange and a second lower edge flange; The second upper edge flange and the second lower edge flange are respectively arranged at the two end edges of the middle protective cover; The second upper edge flange overlaps the first lower edge flange; The second lower edge flange overlaps the lower protective cover.

5. The ablation protection structure for the rotary shaft of the erection frame according to claim 4, characterized in that: The lower protective cover has a third upper edge flange and a third lower edge flange; The third upper edge flange and the third lower edge flange are respectively arranged at the two end edges of the lower protective cover; The third upper edge flange overlaps the second lower edge flange; The third lower edge flange is fixedly connected to the erecting support frame.

6. The ablation protection structure for the rotary shaft of the erection frame according to claim 5, characterized in that: The first upper edge flange is folded outward along the edge of the upper protective cover, and the first lower edge flange is folded inward along the edge of the upper protective cover; The second upper edge flange is folded outward along the edge of the middle layer protective cover, and the second lower edge flange is folded inward along the edge of the middle layer protective cover; The third upper edge flange is folded outward along the edge of the lower protective cover, and the third lower edge flange is folded inward along the edge of the lower protective cover; The first lower edge flange overlaps the second upper edge flange; The second lower edge flange overlaps the third upper edge flange.

7. The ablation protection structure for the rotary shaft of the erection frame according to claim 1, characterized in that: During the erection process of the rocker arm, the upper protective cover is driven to rotate. Under the action of gravity, the middle protective cover rotates around the support shaft along with the upper protective cover to a position overlapping with the lower protective cover. Then, the upper protective cover continues to rotate around the support shaft along with the rocker arm. When the rocker arm is erected to be perpendicular to the erection support frame, the three protective covers overlap.

8. The ablation protection structure for the rotary shaft of the erection frame according to claim 1, characterized in that: During the process of the rocker arm returning to the horizontal position, the upper protective cover is driven to rotate around the support shaft. After the upper protective cover rotates until its lower edge flange overlaps the upper edge of the middle protective cover, the upper protective cover drives the middle protective cover to rotate around the support shaft. When the middle protective cover rotates around the support shaft until the rocker arm is parallel to the erecting support frame, the lower edge of the middle protective cover overlaps the upper edge of the lower protective cover, and the entire protective structure is in a sealed state.

9. The ablation protection structure for the rotary shaft of the erection frame according to any one of claims 1 to 8, characterized in that: The upper protective cover, the middle protective cover and the lower protective cover each include a first side protective plate, a second side protective plate and a protective panel; The first side protection plate and the second side protection plate are fixedly connected to two ends of the protection panel.

10. The ablation protection structure for the rotary shaft of the erection frame according to claim 9, characterized in that: The support shaft includes a first support shaft and a second support shaft; The first support shaft is connected to the first side protection plate of the middle protection cover and the first side protection plate of the lower protection cover; The second supporting shaft is connected inside the second side protective plate of the middle protective cover and the second side protective plate of the lower protective cover.

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