Movable tray for rocket engine

Abstract

The utility model relates to the technical field of spaceflight, in particular to a movable tray for a rocket engine. The movable tray for the rocket engine comprises a bottom frame, at least four end corner limiting clamping pieces and at least four sets of limiting connecting assemblies, a plurality of walking wheels are arranged at the lower end of the bottom frame at intervals, and the at least four end corner limiting clamping pieces are assembled at the upper end of the bottom frame respectively. The end corner limiting clamping pieces are arranged on the bottom frame and distributed at the positions corresponding to the end corners of the rocket engine base at intervals, the end corner limiting clamping pieces are used for being clamped to the end corners of the rocket engine base, and the limiting connecting assemblies are distributed on the periphery of the upper end of the bottom frame at intervals and used for being connected with the corresponding positions of the side ends of the rocket engine base. The device has the advantages of being simple in structure, stable, reliable, small in occupied space, high in universality and the like, the requirement for placing the rocket engine in the vertical state or moving the rocket engine in a small range can be met, and meanwhile all-dimensional appearance inspection or propaganda display of the rocket engine can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of aerospace, in particular to a mobile tray for a rocket engine. Background Art

[0002] As the core component that powers a spacecraft's flight, trajectory change, and attitude adjustments, rocket engines play a crucial role in the entire launch, delivery, and recovery process. Due to their complex structure and numerous thin-walled piping components, engines must be protected from external hazards such as bumps, scratches, and deformation during transportation and storage, requiring rigorous and comprehensive protection.

[0003] Currently, most engine manufacturers use a storage or temporary placement method that involves horizontally securing engines to large metal frames or vertically "hanging" them from metal racks. These metal frames have flat bottoms and are inherently immovable, requiring the use of a forklift or overhead crane to move them. This is difficult to achieve in confined spaces, crowded environments, or inadequate conditions (such as exhibition halls and trade shows).

[0004] Based on this, it is necessary to develop a mobile pallet for rocket engines to overcome the above technical problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a mobile tray for a rocket engine, which effectively overcomes the defects of the prior art.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] A mobile pallet for a rocket engine comprises a bottom frame, at least four end corner limiting clips and at least four groups of limiting connection components. A plurality of running wheels are provided at intervals at the lower end of the bottom frame. At least four of the end corner limiting clips are respectively assembled on the upper end of the bottom frame and are spaced apart at positions corresponding to the end corners of the rocket engine base. The end corner limiting clips are used to engage at the end corners of the rocket engine base. At least four groups of the limiting connection components are spaced apart around the upper end of the bottom frame for connection with corresponding positions on the side ends of the rocket engine base.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, the above-mentioned bottom frame includes a circular outer frame, a hollow support frame is connected and fixed inside the above-mentioned outer frame, the multiple walking wheels are respectively assembled at the lower end of the above-mentioned outer frame along the circumferential direction, the multiple end angle limit clips are respectively installed on the above-mentioned outer frame, and multiple groups of the above-mentioned limit connection components are respectively installed on the above-mentioned outer frame.

[0010] Furthermore, the above-mentioned end angle limit clamp includes a limit block, the inner side of the above-mentioned limit block is set as a V-shaped fitting surface, and the fitting surface is used to fit on the outside of the end angle of the rocket engine base, and the above-mentioned limit block is assembled on the above-mentioned outer frame.

[0011] Furthermore, the limiting block is welded and fixed to the upper end of the outer frame.

[0012] Furthermore, a displacement adjustment mechanism is provided on the outer frame at a position corresponding to the outer side of each of the limit blocks. The displacement adjustment mechanism is connected to the limit blocks and is used to adjust the limit blocks to move closer to or farther from the center straight line of the outer frame.

[0013] Furthermore, the displacement adjustment mechanism includes a fixed seat, which is laterally penetrated by an adjustment screw threadedly connected to the fixed seat. One end of the adjustment screw is rotationally connected to the outer side of the limit block. The adjustment screw extends radially along the outer frame, and the limit block is slidably mounted on the outer frame.

[0014] Furthermore, the above-mentioned fitting surface is provided with a cushion.

[0015] Furthermore, the above-mentioned limiting connection assembly includes a support, a pull rod and a hanging ring. The above-mentioned support is assembled on the upper end of the above-mentioned outer frame. The above-mentioned pull rod horizontally passes through the through hole on the above-mentioned support. One end of the above-mentioned pull rod is provided with a hook. The above-mentioned hanging ring is fixedly installed on the side end of the rocket engine base. The above-mentioned hook is hung with the above-mentioned hanging ring. The other end of the above-mentioned pull rod is set as a threaded section. A locking nut is screwed on the above-mentioned threaded section. A gasket is sandwiched between the above-mentioned locking nut and the above-mentioned support.

[0016] Furthermore, the above-mentioned support includes a mounting plate and a vertical plate fixed vertically on the upper end of the mounting plate. The above-mentioned pull rod vertically passes through the corresponding through hole on the above-mentioned vertical plate. The above-mentioned mounting plate is connected and fixed to the above-mentioned outer frame by bolts, and the above-mentioned gasket is sandwiched between the above-mentioned locking nut and the above-mentioned vertical plate.

[0017] Furthermore, a buffer layer is provided on the upper surface of the support frame.

[0018] The beneficial effects of the utility model are: it has the characteristics of simple structure, stability and reliability, small space occupation, strong versatility, etc. It can meet the needs of placing the rocket engine in a vertical state or moving it in a small range, and at the same time can realize all-round appearance inspection or publicity display of the rocket engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a mobile tray for a rocket engine according to the present invention;

[0020] Figure 2 A structural plan view of another embodiment of a mobile tray for a rocket engine according to the present utility model;

[0021] Figure 3 This is a partial schematic diagram of the mobile tray for a rocket engine of the present invention when the rocket engine is placed;

[0022] Figure 4 This is a structural schematic diagram of a support in a mobile tray for a rocket engine of the present invention.

[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0024] 1. Bottom frame; 2. End angle limit clip; 3. Limit connection assembly; 4. Travel wheel; 11. Outer frame; 12. Support frame; 21. Limit block; 22. Fitting surface; 23. Fixed seat; 24. Adjusting screw; 31. Support; 32. Pull rod; 33. Hanging ring; 34. Locking nut; 35. Gasket; 311. Mounting plate; 312. Vertical plate; 321. Hook. DETAILED DESCRIPTION

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0026] Example: Figure 1 、 2 As shown in Figures 3, the mobile pallet for the rocket engine of this embodiment includes a base frame 1, at least four end corner limiting clamps 2 and at least four groups of limiting connection components 3. A plurality of walking wheels 4 are spaced apart at the lower end of the base frame 1. At least four of the end corner limiting clamps 2 are respectively assembled on the upper end of the base frame 1 and are spaced apart at the end corners corresponding to the rocket engine base (indicated by A in the figure). The end corner limiting clamps 2 are used to engage at the end corners of the rocket engine base. At least four groups of the limiting connection components 3 are spaced apart around the upper end of the base frame 1 for connection with the corresponding parts of the side ends of the rocket engine base.

[0027] When the mobile tray for rocket engines of this embodiment is used, the rocket engine base (a polygonal base with at least four end corners) is mounted on the upper end of the bottom frame 1. At least four end corner limiting clamps 2 are configured on the bottom frame 1. Each end corner of the rocket engine base is clamped and limited by the end corner limiting clamps 2. Afterwards, at least four sets of limiting connection components 3 are connected and locked with the side ends around the rocket engine base, so that the rocket engine base can be stably mounted on the bottom frame 1, and the nozzle support of the rocket engine is placed on the upper end of the base. The entire mobile tray for rocket engines has the characteristics of simple structure, stability and reliability, small space occupation, and strong versatility. It can meet the needs of placing the rocket engine in a vertical state or moving it in a small range (it can achieve planar movement or 360° rotation in place through multiple running wheels 4), and can also realize the full range of appearance inspection or publicity display of the rocket engine. By changing the geometric dimensions of the mounting structure, it can be expanded to different models of rocket engines and can also be expanded to other products that need to be placed vertically.

[0028] As a preferred embodiment, the above-mentioned base frame 1 includes a circular outer frame 11, and a hollow support frame 12 is fixedly connected to the inside of the above-mentioned outer frame 11. The multiple above-mentioned walking wheels 4 are respectively assembled at the lower end of the above-mentioned outer frame 11 along the circumferential direction, and the multiple above-mentioned end angle limit clips 2 are respectively installed on the above-mentioned outer frame 11, and multiple groups of the above-mentioned limit connection components 3 are respectively installed on the above-mentioned outer frame 11.

[0029] In the above embodiment, the outer frame 11 is a circular ring-shaped frame, which ensures overall structural stability and facilitates manufacturing. Compared to traditional rectangular trays, it is more aesthetically pleasing and space-saving. The outer frame 11 is generally made of metal, and the internal support frame 12 is also a metal frame, and the two are secured by welding. The hollow support frame 12 significantly reduces weight while providing stable structural support for the outer frame 11. This reduces consumables and reduces costs while maintaining structural strength.

[0030] In this embodiment of the mobile pallet for rocket engines, the outer frame 11 is a metal ring with an outer diameter of 2200 mm, an inner diameter of 2000 mm, and a thickness of 60 mm. The support frame 12 comprises two cross-shaped connecting beams, each welded to the inner side of the outer frame 11. An 80 x 60 mm rectangular tube is connected between the ends of each adjacent connecting beam, and a reinforcement beam is connected between the center of the rectangular tube and the outer frame 11. The support frame 12 is entirely made of readily available materials, making it easy to source and manufacture.

[0031] As a preferred embodiment, the above-mentioned end angle limit clamp 2 includes a limit block 21, and the inner side of the above-mentioned limit block 21 is set as a V-shaped mating surface 22, and the mating surface 22 is used to engage with the end angle of the rocket engine base. The above-mentioned limit block 21 is assembled on the above-mentioned outer frame 11.

[0032] In summary of the above implementation scheme, since the base of the rocket engine is a polygonal component with at least four end corners, the limit block 21 is designed with a V-shaped fitting surface 22 to fit around the end corners of the rocket engine base, limit the position of the end corners of the base, and position the base. Then, at least four sets of limiting connection components 3 are used to connect between the outer frame 11 and the four side ends of the base to achieve stable fixation of the base, thereby facilitating stable assembly of the rocket engine on the base.

[0033] In this embodiment, the limit block 21 can be assembled on the outer frame 11 in at least two structural forms:

[0034] First, as Figure 1 As shown, the above-mentioned limit block 21 is welded and fixed to the upper end of the above-mentioned outer frame 11, and is suitable for assembling a base of fixed size.

[0035] Second, if Figure 2 As shown, a displacement adjustment mechanism is provided on the outer frame 11 at a position corresponding to the outer side of each of the stop blocks 21. The displacement adjustment mechanism is connected to the stop blocks 21 and is used to adjust the movement of the stop blocks 21 toward or away from the center line of the outer frame 11. The displacement adjustment mechanism can adjust the inward and outward movement of the stop blocks 21 to accommodate the end angles of rocket engine bases of different sizes.

[0036] As a preferred embodiment, Figure 2 As shown, the displacement adjustment mechanism includes a fixed seat 23, and an adjustment screw 24 is horizontally penetrated through the fixed seat 23 and is threadedly connected to it. One end of the adjustment screw 24 is rotatably connected to the outer side of the limit block 21. The adjustment screw 24 extends radially along the outer frame 11, and the limit block 21 is slidably mounted on the outer frame 11.

[0037] In the above embodiment, when adjusting the displacement of the limit block 21, the adjusting screw 24 is turned. Since the limit block 21 is rotationally connected to the adjusting screw 24, and the limit block 21 can only translate along the outer frame 11, as the adjusting screw 24 rotates, the limit block 21 is pushed / pulled to move along the long axis direction of the adjusting screw 24, thereby adjusting the end angle position (limit) to adapt to different sizes of rocket engine bases.

[0038] In this embodiment, a soft pad is provided on the mating surface 22. The design of the soft pad ensures flexible contact between the mating surface and the corner of the rocket engine base when engaged, fully protecting the corner of the base. A rubber pad (V-shaped) or the like can be used.

[0039] As a preferred embodiment, the above-mentioned limiting connection assembly 3 includes a support 31, a pull rod 32 and a hanging ring 33. The above-mentioned support 31 is assembled on the upper end of the above-mentioned outer frame 11. The above-mentioned pull rod 32 horizontally passes through the through hole on the above-mentioned support 31. One end of the above-mentioned pull rod 32 is provided with a hook 321. The above-mentioned hanging ring 33 is fixedly installed on the side end of the rocket engine base. The above-mentioned hook 321 is hung with the above-mentioned hanging ring 33. The other end of the above-mentioned pull rod 32 is set as a threaded section. A locking nut 34 is screwed on the above-mentioned threaded section. A gasket 35 is sandwiched between the above-mentioned locking nut 34 and the above-mentioned support 31.

[0040] In the above embodiment, the hanging ring 33 is mounted on the side end of the rocket engine base. Generally, the hanging ring 33 is fixed to a fixing plate, which is attached to the side end of the rocket engine base and connected by bolts. The pull rod 32 first passes through the through hole on the support 31 and is then hooked to the hanging ring 33 through the hook 321. Then, the locking nut 34 is tightened to make the locking nut 34 close to the support 31, and the gasket 35 is tightly clamped between the support 31 and the locking nut 34, which drives the pull rod 32 outward, ensures that the hook 321 is effectively hooked to the hanging ring 33, and thus achieves the locking of the rocket engine base and the outer frame 11. This structural design is simple and reasonable, and is relatively easy to operate.

[0041] As a preferred embodiment, the above-mentioned support 31 includes a mounting plate 311 and a vertical plate 312 vertically fixed to the upper end of the mounting plate 311, the above-mentioned pull rod 32 vertically passes through the adaptive through hole on the above-mentioned vertical plate 312, the above-mentioned mounting plate 311 is connected and fixed to the above-mentioned outer frame 11 by bolts, and the above-mentioned gasket 35 is sandwiched between the above-mentioned locking nut 34 and the above-mentioned vertical plate 312.

[0042] In the above embodiment, if Figure 4 As shown, the support 31 adopts a mutually perpendicular mounting plate 311 and a vertical plate 312 (actually forming a T-shaped seat body) for easy installation. Among them, the through hole on the support 31 is a horizontally arranged waist-round hole.

[0043] As a preferred embodiment, a buffer layer is provided on the upper surface of the support frame 12 .

[0044] In the above embodiment, the design of the cushion layer can provide a certain degree of cushioning effect on the rocket engine base and the rocket engine supported thereon under vibration, thereby protecting the rocket engine to a certain extent. The cushion layer can generally be a rubber pad or a cushion layer supported by other flexible materials.

[0045] In this embodiment, eight walking wheels 4 are provided, and conventional universal casters can be used. The casters are provided with a brake function, and the brakes can be used to restrain the movement of the pallet when stopping.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0049] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A mobile pallet for a rocket engine, characterized by: The invention comprises a bottom frame (1), at least four end corner limiting clamps (2) and at least four groups of limiting connection components (3); a plurality of running wheels (4) are provided at intervals at the lower end of the bottom frame (1); at least four end corner limiting clamps (2) are respectively assembled on the upper end of the bottom frame (1) and are spaced apart at positions corresponding to the end corners of a rocket engine base; the end corner limiting clamps (2) are used to be engaged at the end corners of the rocket engine base; at least four groups of limiting connection components (3) are spaced apart around the upper end of the bottom frame (1) and are used to be connected to corresponding positions at the side ends of the rocket engine base.

2. A mobile pallet for a rocket engine according to claim 1, characterized in that: The bottom frame (1) comprises a circular outer frame (11), a hollow support frame (12) is connected and fixed inside the outer frame (11), a plurality of the walking wheels (4) are respectively assembled at intervals along the circumferential direction at the lower end of the outer frame (11), a plurality of the end angle limiting clips (2) are respectively mounted on the outer frame (11), and a plurality of groups of the limiting connection components (3) are respectively mounted on the outer frame (11).

3. A mobile pallet for a rocket engine according to claim 2, characterized in that: The end angle limiting clamp (2) comprises a limiting block (21), the inner side of the limiting block (21) is provided with a V-shaped fitting surface (22), and the fitting surface (22) is used for fitting on the outer end angle of the rocket engine base. The limiting block (21) is assembled on the outer frame (11).

4. A mobile pallet for a rocket engine according to claim 3, characterized in that: The limiting block (21) is welded and fixed to the upper end of the outer frame (11).

5. The mobile pallet for a rocket engine according to claim 3, characterized in that: A displacement adjustment mechanism is provided on the outer frame (11) at a position corresponding to the outer side of each limit block (21); the displacement adjustment mechanism is connected to the limit block (21) and is used to adjust the limit block (21) to move closer to or farther from the center straight line of the outer frame (11).

6. The mobile pallet for a rocket engine according to claim 5, characterized in that: The displacement adjustment mechanism comprises a fixed seat (23), an adjustment screw (24) is provided on the fixed seat (23) and is threadedly connected thereto, one end of the adjustment screw (24) is rotatably connected to the outer side of the limit block (21), the adjustment screw (24) extends along the radial direction of the outer frame (11), and the limit block (21) is slidably mounted on the outer frame (11).

7. The mobile pallet for a rocket engine according to claim 3, characterized in that: The fitting surface (22) is fitted with a soft cushion.

8. The mobile pallet for a rocket engine according to claim 2, characterized in that: The limiting connection assembly (3) includes a support (31), a pull rod (32) and a hanging ring (33), the support (31) is assembled on the upper end of the outer frame (11), the pull rod (32) passes through the through hole on the support (31) horizontally, one end of the pull rod (32) is provided with a hook (321), the hanging ring (33) is fixed to the side end of the rocket engine base, the hook (321) is hung with the hanging ring (33), the other end of the pull rod (32) is set as a threaded section, a locking nut (34) is screwed on the threaded section, and a gasket (35) is sandwiched between the locking nut (34) and the support (31).

9. The mobile pallet for a rocket engine according to claim 8, characterized in that: The support (31) includes a mounting plate (311) and a vertical plate (312) vertically fixed to the upper end of the mounting plate (311); the pull rod (32) vertically passes through a matching through hole on the vertical plate (312); the mounting plate (311) is connected and fixed to the outer frame (11) by bolts; and the gasket (35) is sandwiched between the locking nut (34) and the vertical plate (312).

10. A mobile pallet for a rocket engine according to any one of claims 2 to 9, characterized in that: The upper surface of the support frame (12) is provided with a buffer layer.

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