Rotary lifting assembly for transferring and assembling rocket engine

Abstract

The embodiment of the utility model provides a rotary lifting assembly for rocket engine transfer assembly, which is arranged between a walking base and a supporting panel and comprises a bottom plate, a plurality of independent screw lifters, a plurality of reversing shafts, a reversing driving structure and a rotary driving structure, the lead screw lifters are arranged on the walking base at equal intervals, the bottom plate is fixed to lifting flanges of the lead screw lifters, and the lead screw lifters ascend and descend and drive the bottom plate and the supporting panel to ascend and descend integrally. The rotary driving structure is fixed on the top surface of the bottom plate, and the rotary driving structure is connected with the supporting panel; the lifting and reversing mechanism is reasonable in structural arrangement, lifting and reversing adjustment can be achieved through the reversing driving structure in cooperation with the lead screw lifting machine and the reversing shaft, rotation operation of the supporting panel can be achieved through the rotation driving structure, rotation and lifting adjustment is convenient, transfer assembly effectiveness and assembly precision of a rocket engine can be improved, and production efficiency is improved. The engine can be prevented from being damaged, and the applicability is high.

Description

Technical Field

[0001] This utility model relates to the field of rocket transport and lifting technology, specifically to a rotary lifting assembly for rocket engine transport and assembly. Background Technology

[0002] After processing, liquid rockets require transportation and assembly operations. The most common transportation method for liquid rockets is horizontal transport, which requires corresponding transportation and assembly tools. For example, Chinese patent application number 202010936729.5, patent name: Novel integrated tooling for transporting and flipping liquid rocket engines; and Chinese patent application number 201910847145.8, patent name: Low-profile trackless large launch vehicle segment docking and assembly six-degree-of-freedom attitude adjustment platform.

[0003] In the process of realizing this utility model, the inventors discovered that the prior art has at least the following problems: it cannot realize rotation and lifting adjustment operations, so it is necessary to equip corresponding lifting tools and cooperate with the test bench thrust frame to complete the transfer and docking operations. This not only affects the efficiency of docking and assembly, but also easily causes collision damage to the engine, affecting the effectiveness and stability of transfer and assembly, and limiting its practicality. Utility Model Content

[0004] In view of this, the purpose of this utility model embodiment is to provide a rotating lifting assembly for rocket engine transfer and assembly with a reasonable structural design and convenient rotation and lifting adjustment.

[0005] To achieve the above objectives, this utility model provides a rotary lifting assembly for rocket engine transfer and assembly, which is disposed between a walking base and a support panel, including a base plate, several individual screw jacks, several reversing shafts, a reversing drive structure, and a rotary drive structure.

[0006] The screw jacks are evenly spaced on the traveling base, and the base plate is fixed on the lifting flange of the screw jack. The screw jacks lift and lower, driving the base plate and the support panel to lift and lower as a whole.

[0007] The rotary drive structure is fixed to the top surface of the base plate and is connected to the support panel. The rotary drive structure is used for the rotary drive of the support panel.

[0008] The reversing drive structure is mounted on the base plate and connected to several screw jacks via several reversing shafts. When the reversing drive structure is activated, it drives different screw jacks to lift and lower, thereby achieving lifting and lowering motion.

[0009] A further preferred embodiment is that the commutation drive structure includes a servo motor, a master servo commutator, a connecting shaft, and a slave servo commutator;

[0010] The servo motor is connected to the main servo commutator, and the main servo commutator is connected to the slave servo commutator via the connecting shaft.

[0011] The ends of the commutation shaft are respectively connected to the slave commutator.

[0012] A further preferred embodiment is that the number of the commutator shafts and the screw jacks are both four, and two of the commutator shafts are connected to one of the slave servo commutators.

[0013] A further preferred embodiment is that the rotary drive structure includes a rotary drive motor and a drive gear;

[0014] The bottom surface of the support panel is provided with a transmission gear, and the center of the bottom surface of the support panel is rotatably connected to the center of the base plate through a shaft.

[0015] The drive gear is fixed on the main shaft of the rotary drive motor, and the transmission gear meshes with the drive gear.

[0016] A further preferred embodiment is that an oil-free bushing is provided at the connection between the shaft and the base plate.

[0017] A further preferred embodiment is that the base plate is circular.

[0018] A further preferred embodiment is that the bottom edge of the support panel is provided with a omnidirectional ball, which is rotatably disposed on the top surface of the base plate.

[0019] A further preferred embodiment is that the diameter of the transmission gear is larger than the diameter of the drive gear.

[0020] A further preferred embodiment is that the walking base is circular.

[0021] A further preferred embodiment is that the support panel is circular.

[0022] The above technical solution has the following beneficial effects:

[0023] 1. The structure of this utility model is reasonable. It includes a base plate, several individual screw jacks, several reversing shafts, a reversing drive structure and a rotary drive structure. The reversing drive structure can be used in conjunction with the screw jacks and reversing shafts to achieve synchronous lifting of the four screw jacks. The rotary drive structure can realize the rotation operation of the support panel, which facilitates rotation and lifting adjustment. This is beneficial to improving the efficiency and accuracy of rocket engine transfer and assembly, and can also avoid damaging the engine. It has strong applicability.

[0024] 2. The commutation drive structure includes a servo motor, a main servo commutator, a connecting shaft, and a slave servo commutator. It can realize the lifting drive of multiple screw jacks through one servo motor, which helps to reduce costs and at the same time ensures the synchronization of the lifting action of the screw jacks.

[0025] 3. The rotary drive structure includes a rotary drive motor and a drive gear, which realizes drive control through the rotary drive structure to ensure the effectiveness and stability of the rotation of the support panel;

[0026] 4. An oil-free bushing is installed at the connection between the shaft and the base plate. The oil-free bushing can improve the smoothness of rotation and make the rotation free from jamming.

[0027] 5. The bottom edge of the support panel is equipped with ball bearings, which ensure the effectiveness and reliability of the rotation of the support panel. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0030] Figure 2 This is a schematic diagram of the specific structure of the embodiment of the present utility model and the support panel;

[0031] Figure 3 This is a schematic diagram of the structure during assembly and use of an embodiment of this utility model;

[0032] Figure 4 This is a schematic diagram of the structure of the connection between the shaft and the bushingless part in an embodiment of this utility model;

[0033] Figure 5 This is a schematic diagram of the screw jack, reversing shaft, and reversing drive structure according to an embodiment of the present utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Walking base; 2. Support panel; 3. Base plate; 4. Screw jack; 5. Reversing shaft;

[0036] 6. Commutation drive structure; 61. Servo motor; 62. Master servo commutator; 63. Connecting shaft; 64. Slave servo commutator;

[0037] 7. Rotary drive structure; 71. Rotary drive motor; 72. Drive gear;

[0038] 8. Shaft; 9. Oil-free bushing; 10. Transmission gear; 11. Universal ball joint. Detailed Implementation

[0039] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a comprehensive understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this utility model by illustrating examples of it. In the accompanying drawings and the following description, at least some well-known structures and techniques have not been shown to avoid unnecessarily obscuring the utility model; and, for clarity, the dimensions of some structures may be exaggerated. Furthermore, the features, structures, or characteristics described below can be combined in any suitable manner in one or more embodiments.

[0040] like Figures 1 to 5 As shown, a rotary lifting assembly for transporting and assembling a rocket engine is disposed between a traveling base 1 and a support panel 2. It includes a base plate 3, several individual screw jacks 4, several reversing shafts 5, a reversing drive structure 6, and a rotary drive structure 7. In this embodiment, the traveling base 1 is equipped with a traveling wheel structure, which enables the propulsion and transport operation. The support panel 2 is used to support the rocket engine. These are conventional structures in the prior art, and therefore are not described in detail; they are simply applied. Similarly, the screw jacks 4 are conventional structures in the prior art, used for lifting and adjusting the overall structure; they are also simply applied.

[0041] like Figures 1 to 3 As shown, during assembly, the screw jacks 4 are evenly spaced on the traveling base 1, and the base plate 3 is fixed to the lifting flange of the screw jacks 4. The screw jacks 4 lift and lower, driving the base plate 3 and the support panel 2 to lift as a whole. The rotary drive structure 7 is fixed to the top surface of the base plate 3 and connected to the support panel 2, and is used for the rotation drive of the support panel 2. The reversing drive structure 6 is set on the base plate 3 and connected to several screw jacks 4 through several reversing shafts 5. The reversing drive structure 6 moves and drives different screw jacks 4 to achieve lifting and lowering movements through the reversing shafts 5. In practical applications, to improve the decorative aesthetics, the base plate 3 has a skirt along its edge, which can be welded or fixed with screws. The reversing drive structure 6 is used for reversing drive control, and the rotary drive structure 7 is used for rotary drive control operation, which can realize the rotation adjustment and control of the support panel 2.

[0042] like Figure 2 and Figure 5 As shown, in practical applications, the commutation drive structure 6 includes a servo motor 61, a main servo commutator 62, a connecting shaft 63, and slave servo commutators 64. During processing and assembly, the servo motor 61 is connected to the main servo commutator 62, and the main servo commutator 62 is connected to the slave servo commutators 64 via the connecting shaft 63. The ends of the commutation shaft 5 are connected to the two slave servo commutators 64 respectively. The main servo commutator 62 and the two slave servo commutators 64 are conventional structures in the prior art, simply applied for commutation adjustment, and therefore not described in detail. The above structure reduces the overall structure, and the drive is achieved by a single servo motor, ensuring the synchronous lifting and lowering of the screw jack 4 and its smooth reliability.

[0043] The purpose of the main servo commutator 62 is to ensure the consistency of the movement of the four screw jacks 4, that is, one servo motor 61 drives the movement of the four screw jacks 4.

[0044] First, the main servo commutator 62 can transmit the rotational motion of the servo motor 61 drive shaft to the two connecting shafts 63, and the two connecting shafts 63 move synchronously. Second, the two connecting shafts 63 are transmitted to the two commutator shafts 5 through the two slave servo commutators 64, thus ensuring the consistency of the movement of the four screw jacks 4.

[0045] In practical applications, there are four commutator shafts 5 and four screw jacks 4, and two commutator shafts 5 are connected to a slave servo commutator 64.

[0046] like Figure 2 , Figure 3 and Figure 5 As shown, in practical applications, the rotary drive structure 7 includes a rotary drive motor 71 and a drive gear 72; a transmission gear 10 is provided on the bottom surface of the support panel 2, and the center of the bottom surface of the support panel 2 is rotatably connected to the center of the base plate 3 via a shaft 8; the drive gear 72 is fixed on the main shaft of the rotary drive motor 71, and the transmission gear 10 meshes with the drive gear 72. The diameter of the transmission gear 10 is larger than the diameter of the drive gear 72, which can achieve the effect of deceleration and increased torque, thereby achieving the purpose of smooth adjustment and increased load. Figure 1 , Figure 2 and Figure 4 As shown, an oil-free bushing 9 is provided at the connection between the shaft 8 and the base plate 3. This oil-free bushing 9 is made of tin bronze, which helps to improve the smoothness and lack of jamming during rotation, and improves the efficiency of rotation.

[0047] like Figure 1 , Figure 2As shown, in practical applications, the base plate 3, the walking base 1, and the support panel 2 are all circular. However, in practical applications, other shapes are also possible without affecting rotation. A universal ball 11 is provided along the bottom edge of the support panel 2, and the universal ball 11 is rolled onto the top surface of the base plate 3. This universal ball 11 helps improve the rotational effectiveness and stable reliability of the support panel 2.

[0048] The above technical solution has the following beneficial effects:

[0049] 1. The structure of this utility model is reasonable. It includes a base plate, several individual screw jacks, several reversing shafts, a reversing drive structure, and a rotary drive structure. The reversing drive structure can work in conjunction with the screw jacks and reversing shafts to achieve synchronous lifting of the four screw jacks. The rotary drive structure can realize the rotation operation of the support panel, which facilitates rotation and lifting adjustment. This is beneficial to improving the efficiency and accuracy of rocket engine transfer and assembly, and can also avoid damaging the engine. It has strong applicability.

[0050] 2. The commutation drive structure includes a servo motor, a main servo commutator, two connecting shafts, and two slave servo commutators. This allows the lifting drive of multiple screw jacks to be realized through a single servo motor, which helps reduce costs and ensures the synchronization of the lifting actions of the screw jacks.

[0051] 3. The rotary drive structure includes a rotary drive motor and a drive gear. The rotary drive structure enables drive control, ensuring the effectiveness and stability of the rotation of the support panel.

[0052] 4. An oil-free bushing is installed at the connection between the shaft and the base plate. The oil-free bushing can improve the smoothness of rotation and make the rotation free from jamming.

[0053] 5. The bottom edge of the support panel is equipped with ball bearings, which ensure the effectiveness and reliability of the support panel's rotation through the universal ball bearings.

[0054] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Furthermore, the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this utility model should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A rotary lifting assembly for transporting and assembling rocket engines, disposed between a traveling base (1) and a support panel (2), characterized in that: It includes a base plate (3), several individual screw jacks (4), several reversing shafts (5), a reversing drive structure (6), and a rotary drive structure (7); The screw jack (4) is evenly spaced on the walking base (1), and the base plate (3) is fixed on the lifting flange of the screw jack (4). The screw jack (4) lifts and lowers, and drives the base plate (3) and the support panel (2) to lift as a whole. The rotary drive structure (7) is fixed to the top surface of the base plate (3) and is connected to the support panel (2). The rotary drive structure (7) is used for the rotary drive of the support panel (2). The reversing drive structure (6) is mounted on the base plate (3) and connected to several screw jacks (4) via several reversing shafts (5). When the reversing drive structure (6) is activated, it drives different screw jacks (4) to achieve lifting and lowering movements via the reversing shafts (5).

2. The rotary lifting assembly for rocket engine transfer and assembly according to claim 1, characterized in that: The commutation drive structure (6) includes a servo motor (61), a main servo commutator (62), a connecting shaft (63), and a slave servo commutator (64); The servo motor (61) is connected to the main servo commutator (62), and the main servo commutator (62) is connected to the slave servo commutator (64) through the connecting shaft (63); The ends of the commutation shaft (5) are respectively connected to the slave commutator (64).

3. A rotary lifting assembly for rocket engine transfer and assembly according to claim 2, characterized in that: The number of the commutator shaft (5) and the screw jack (4) are both four, and two of the commutator shafts (5) are connected to one of the slave servo commutators (64).

4. A rotary lifting assembly for transporting and assembling rocket engines according to claim 1, characterized in that: The rotary drive structure (7) includes a rotary drive motor (71) and a drive gear (72); The bottom surface of the support panel (2) is provided with a transmission gear (10), and the center of the bottom surface of the support panel (2) is rotatably connected to the center of the base plate (3) through a shaft (8). The drive gear (72) is fixed on the main shaft of the rotary drive motor (71), and the transmission gear (10) meshes with the drive gear (72).

5. A rotary lifting assembly for rocket engine transfer and assembly according to claim 4, characterized in that: An oil-free bushing (9) is provided at the connection between the shaft (8) and the base plate (3).

6. A rotary lifting assembly for transporting and assembling rocket engines according to claim 1, characterized in that: The base plate (3) is circular.

7. A rotary lifting assembly for transporting and assembling rocket engines according to claim 1, characterized in that: The bottom edge of the support panel (2) is provided with a universal ball (11), which is rolled on the top surface of the base plate (3).

8. A rotary lifting assembly for transporting and assembling rocket engines according to claim 4, characterized in that: The diameter of the transmission gear (10) is larger than the diameter of the drive gear (72).

9. A rotary lifting assembly for transporting and assembling rocket engines according to claim 1, characterized in that: The walking base (1) is circular.

10. A rotary lifting assembly for transporting and assembling rocket engines according to claim 1, characterized in that: The support panel (2) is circular.

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