Solid rocket engine jet pipe diffusion section hoisting and transferring tool

Abstract

The utility model relates to the field of hoisting tools, in particular to a solid rocket engine nozzle diffusion section hoisting and transferring tool. Comprising a supporting ring, a supporting ring felt, a limiting block felt, a limiting block, a lifting ring screw and a lifting belt complete set rigging, the supporting ring felt is bonded to the surface of the supporting ring, a threaded hole used for fixing a lifting ring is formed in the supporting ring, the limiting block is fixed to the upper surface of the supporting ring in a welded mode, and the limiting block felt is bonded to the inner side of the limiting block 4. And the sling complete set of rigging is used for hoisting by utilizing a lifting hook of the sling complete set to penetrate through the lifting bolt. The lifting and transferring tool is not limited by the space of the small end of the diffusion section, the supporting ring felt and the limiting block felt can protect the large end of the diffusion section from being scratched, and the four lifting belts of the four-leg lifting belt complete set rigging can play a role in limiting the diffusion section and can also play a role in protecting the outer surface of the diffusion section. And the outer surface of the diffusion section cannot be damaged in the hoisting process.

Description

Technical Field

[0001] This utility model relates to the field of hoisting fixtures, specifically to a hoisting and transporting fixture for the diffuser section of a solid rocket engine nozzle. Background Technology

[0002] After the solid rocket engine nozzle diffuser section is manufactured, it needs to be hoisted and transported using tools. The solid rocket engine nozzle diffuser section is a frustum-shaped shell with a large end and a small end. In actual operation, an overhead crane is often used to connect to a sling, and then hoisting tools are used to hoist the large end or the small end through the sling to complete the final transportation work.

[0003] In existing methods for lifting the diffuser section, such as the solid rocket engine nozzle diffuser section lifting fixture disclosed in Chinese patent document CN211198348U, a sling is used to lift the support leg, which is then inserted into the small end of the solid rocket engine nozzle. After that, an overhead crane is used to connect with the lifting ring to complete the lifting operation.

[0004] Typically, the smaller end of the diffuser section of a solid rocket motor nozzle is small, and the volume of the lifting fixture is limited by the space at the smaller end of the diffuser section. For diffuser sections with small smaller end dimensions, it is difficult to design a matching lifting fixture, and the support legs are prone to damage to the inner wall of the diffuser section when they come into contact with it. Summary of the Invention

[0005] Based on the above-mentioned technical problems, this utility model proposes a hoisting and transportation tool for the diffuser section of a solid rocket engine nozzle, in order to solve the problems that it is difficult to design a matching hoisting tool for the existing diffuser section with a small end size, and that the existing hoisting tool is very easy to damage the inner wall of the diffuser section.

[0006] To solve the above-mentioned technical problems, one of the objectives of this utility model is to provide a lifting and transfer fixture for the diffuser section of a solid rocket engine nozzle, including a support ring 1, a support ring felt 2, a limiting block felt 3, a limiting block 4, a lifting eye screw 5, and a lifting sling. The support ring felt 2 is bonded to the surface of the support ring 1, and the support ring 1 is provided with threaded holes for fixing the lifting eye. The limiting block 4 is fixed to the upper surface of the support ring 1 by welding, and the limiting block felt 3 is bonded to the inner side of the limiting block 4. The lifting sling uses its own hook to pass through the lifting eye screw 5 for lifting.

[0007] Furthermore, the area on the support ring felt 2 through which the eye bolt 5 passes is perforated to avoid the eye bolt 5.

[0008] Furthermore, the sling set is a four-legged sling set 6.

[0009] Furthermore, the sling set is a three-legged sling set.

[0010] The above-mentioned one or more technical solutions of this utility model have at least one or more of the following technical effects: the hoisting and transfer tool of this utility model is not limited by the space of the small end of the diffuser section, the support ring felt and the limiting block felt can protect the large end of the diffuser section from being scratched, and the four slings of the four-leg sling set can not only limit the diffuser section, but also protect the outer surface of the diffuser section, ensuring that the outer surface of the diffuser section will not be damaged during hoisting. Attached Figure Description

[0011] Figure 1 : A schematic diagram of the structure of the four-legged sling rigging of this utility model when it is retracted;

[0012] Figure 2 : Top view of the overall structure of this utility model;

[0013] Among them: 1-support ring, 2-support ring felt, 3-limiting block felt, 4-limiting block, 5-lifting eye screw, 6-four-leg sling complete set of rigging. Detailed Implementation Plan

[0014] This invention provides a dedicated lifting and transfer fixture that is not limited by the space at the small end of the diffuser section, and will not damage the inner or outer surfaces of the diffuser section during lifting. The lifting and transfer fixture includes a support ring 1, a support ring felt 2, a limiting block felt 3, a limiting block 4, a lifting eye screw 5, and a four-legged sling 6. The support ring felt is bonded to the surface of the support ring, and the support ring has four threaded holes for fixing the lifting eye. The limiting block is fixed to the upper surface of the support ring by welding, and the limiting block felt is bonded to the inner side of the limiting block. The four-legged sling 6 uses its own hooks to pass through the lifting eye screws for lifting.

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all of the embodiments obtained. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0016] like Figures 1-2 As shown, a solid rocket engine nozzle diffuser section hoisting and transfer tooling includes a support ring 1, a support ring felt 2, a limiting block felt 3, a limiting block 4, a lifting eye screw 5, and a four-legged sling set 6.

[0017] In practice, four eye bolts 5 are fixed to the support ring 1 through the threaded holes of the support ring 1. The area through which the eye bolts 5 pass is opened on the support ring felt 2 to avoid the eye bolts 5. The large end of the solid rocket engine nozzle diffuser section to be lifted is placed on the support ring felt 2 on the support ring 1 with the large end facing down. The outermost edge of the large end of the solid rocket engine nozzle diffuser section should be inside the limiting block felt 3. The four hooks on the four-leg sling set 6 are passed through the four eye bolts 5 in sequence. The uppermost eye of the four-leg sling set 6 is put on the hook of the overhead crane or other lifting tool.

[0018] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.

[0019] The four-legged sling rigging can be replaced with a three-legged sling rigging. The four-legged sling rigging can also be replaced with a four-legged chain rigging, with each of the four chains individually wrapped in felt to protect the outer surface of the diffuser section.

[0020] This utility model has been proven safe and reliable in actual use, and has effectively enabled the lifting of the diffusion section and its transfer within the plant area.

Claims

1. A hoisting and transporting fixture for the diffuser section of a solid rocket motor nozzle, characterized in that: The sling includes a support ring (1), a support ring felt (2), a limiting block felt (3), a limiting block (4), a lifting eye screw (5), and a sling set. The support ring felt (2) is bonded to the surface of the support ring (1). The support ring (1) has threaded holes for fixing the lifting eye. The limiting block (4) is fixed to the upper surface of the support ring (1) by welding. The limiting block felt (3) is bonded to the inner side of the limiting block (4). The sling set uses its own hook to pass through the lifting eye screw (5) for lifting.

2. The solid rocket motor nozzle diffuser section hoisting and transfer fixture according to claim 1, characterized in that: The area through which the eye bolt (5) passes on the support ring felt (2) is opened to avoid the eye bolt (5).

3. The solid rocket motor nozzle diffuser section hoisting and transfer fixture according to claim 1, characterized in that: The sling set is a four-legged sling set (6).

4. The hoisting and transporting fixture for the diffuser section of a solid rocket motor nozzle according to claim 1, characterized in that: The sling set is a three-legged sling set.

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