An assembly and disassembly tooling for rocket refueling valves

Abstract

This utility model relates to an assembly and disassembly fixture for a rocket refueling valve, comprising a support (1), a base (2), a top seat (3), and a tightening nut wrench (4). The support (1), base (2), and top seat (3) together form a frame structure, wherein the top seat (3) is located above the base (2), and the two ends of the support (1) are connected to the base (2) and the top seat (3) respectively. The top seat (3) has a wrench mounting hole at its center for installing the tightening nut wrench (4), and the tightening nut wrench (4) is installed on the top seat (3) through the wrench mounting hole. The base (2) is a hollow flange structure with bolt holes and a positioning coaxial structure (6) on its flange. The bolt holes and positioning coaxial structure (6) of the base (2) are adapted to the bolt holes and positioning coaxial structure of the refueling valve flange, respectively. This utility model's assembly and disassembly fixture for a rocket refueling valve has the technical advantages of integrating simple and portable structure, precise coaxial positioning, multi-angle anti-flight capability, and torque control.

Description

Technical Field

[0001] This utility model relates to a tooling for assembling and disassembling valves, and more particularly to a tooling for assembling and disassembling rocket fueling valves with a large spring pre-compression structure. Background Technology

[0002] The propellant loading valve is a crucial structural component on launch vehicles, and its assembly technology directly impacts the reliability of the rocket launch. The valve body nut (or bonnet nut) is the most important external pressure-bearing and securing structure of the loading valve. Its core function is to firmly fix and seal the valve's internal mechanism to the valve body or container, enabling it to withstand the high pressure of the internal medium. Although simple in structure, the bonnet nut is the most critical mechanical connection and sealing barrier between the valve and the container; its integrity directly affects the safety of the entire pressure vessel system.

[0003] During the assembly of refueling valves, especially rocket refueling valves with a large spring pre-compression structure, if there is a misalignment between the coaxiality of the clamping nut and the valve body thread, jamming can easily occur, leading to valve assembly failure, damage to the threads, and affecting their service life. In severe cases, it can even directly render the nut and valve body unusable. Furthermore, due to the very large spring force of the refueling valve, improper operation during assembly can easily cause the clamping nut to fly off, potentially causing injury. In addition, traditional assembly methods require multiple people to work together, and assembling a single valve is time-consuming, failing to meet the needs of mass production. Patent CN104290075A provides a thread assembly tooling suitable for the valve body and valve cover, which allows for single-person operation and solves the problem of parts flying upwards. However, it still suffers from insufficient coaxiality accuracy between the valve body and nut, a large size leading to inconvenience in use, and the possibility of parts flying outwards.

[0004] Therefore, there is an urgent need to develop a special assembly and disassembly tooling that integrates precise coaxial positioning, multi-angle anti-flying, and torque control. Utility Model Content

[0005] The purpose of this invention is to provide an assembly and disassembly tooling for rocket refueling valves, in order to solve some of the problems existing in the prior art.

[0006] To achieve the above objectives, this utility model provides the following solution: An assembly and disassembly tooling for a rocket refueling valve includes a support (1), a base (2), a top seat (3), and a tightening nut wrench (4). The support (1), base (2), and top seat (3) together form a frame structure, wherein the top seat (3) is located above the base (2). The two ends of the support (1) are connected to the base (2) and the top seat (3) respectively. The top seat (3) has a wrench mounting hole at its center for installing the tightening nut wrench (4). The tightening nut wrench (4) passes through the wrench mounting hole and is installed on the top seat (3). The base (2) is a hollow flange structure and has bolt holes on its flange. The bolt holes are adapted to the bolt holes of the refueling valve flange.

[0007] In a further embodiment of the present invention, the flange structure of the base (2) is provided with a positioning coaxial structure (6), which is adapted to the positioning coaxial structure of the filling valve flange.

[0008] In one embodiment of this utility model, the positioning coaxial structure is selected from the stop positioning structure, the reamed hole bolt positioning structure, the positioning pin structure, or the tenon and groove sealing positioning structure, with the tenon and groove sealing positioning structure being preferred.

[0009] In one embodiment of the present invention, the support (1) is detachably connected to the base (2) and / or the top seat (3).

[0010] In one embodiment of this utility model, the support (1) is connected to the base (2) and / or the top seat (3) by means of bolt connection, screw connection, snap connection or wedge connection.

[0011] In one embodiment of this utility model, the bottom of the support (1) is provided with a connecting ear plate with bolt holes, which is connected to the base (2) by bolts (5).

[0012] In one embodiment of this utility model, the top of the support (1) is provided with a square hole, and the edge of the top seat (3) is provided with a square block that matches the square hole, with the square hole and the square block in a clearance fit.

[0013] In one embodiment of this utility model, the tightening nut wrench (4) is threadedly engaged with the wrench mounting hole at the center of the top seat (3).

[0014] In one embodiment of this utility model, the lower end of the tightening nut wrench (4) is provided with a connecting mechanism (7) that connects to the end of the tightening nut. Preferably, the connecting mechanism (7) at the lower end of the tightening nut wrench (4) is square and engages with the square groove at the end of the tightening nut.

[0015] In a further embodiment of this utility model, the upper end of the tightening nut wrench (4) is provided with a torque wrench interface.

[0016] Beneficial effects This utility model has at least the following technical effects: 1. This utility model assembly and disassembly fixture adopts an integrated design of flange positioning and frame constraint. During use, the base of the flange structure is rigidly connected to the filling valve flange, and the parts that need to be assembled or disassembled are confined in a complete frame structure composed of a support, a base, and a top seat. Unlike the simple single-point limit or local constraint in the prior art, this achieves all-round constraint of the spring force, fundamentally solving the problem of parts flying away.

[0017] 2. The assembly and disassembly tooling of this utility model has a coaxial positioning structure on its base that is compatible with the flange of the filling valve. Through the cooperation of the coaxial positioning structures of the two, the coaxiality between the tooling and the filling valve is ensured, thereby ensuring the coaxiality between the subsequent parts of the filling valve and the filling valve, fundamentally avoiding the problem of jamming or damage to parts caused by coaxiality deviation.

[0018] 3. The assembly and disassembly tooling of this utility model adopts a torque wrench adapter design, which can apply torque and avoid excessive manual force causing the wrench to slip and damage the parts.

[0019] 4. The frame structure of this utility model assembly and disassembly fixture is used to ensure coaxiality of assembly and disassembly operations and to restrict the flying of parts in all directions. The same structure realizes multiple functions, making it simple and portable.

[0020] 5. The assembly and disassembly tooling of this utility model has high reliability and can meet the needs of high torque operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments 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.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a bottom view of the present invention.

[0023] Explanation of reference numerals in the attached figures: 1. Support; 2. Base; 3. Top seat; 4. Tightening nut wrench; 5. Bolt; 6. Positioning coaxial structure; 7. Connecting mechanism. Detailed Implementation

[0024] The features and exemplary embodiments of various aspects of this utility model will be described in detail below. To make the objectives, technical solutions, and advantages of this utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this utility model and to exemplarily illustrate the principles of this utility model, and are not configured to limit this utility model. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the dimensions of some structural components or regions in the drawings may be enlarged for other structural components or regions to aid in the understanding of the embodiments of this utility model.

[0025] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this utility model. In the description of this utility model, it should be noted that, unless otherwise stated, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] Furthermore, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure or component that includes a list of elements includes not only those elements but also other structural elements that are not expressly listed or inherent to the structure or component. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes the element.

[0027] Spatial relation terms such as "below," "under," "under," "low," "above," "on," and "high" are used for descriptive convenience to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device, in addition to those different from those shown in the figure. Furthermore, phrases such as "one element on / below another element" can indicate that two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first" and "second" are also used to describe individual elements, areas, parts, etc., without specifically indicating order or sequence, and should not be considered restrictive. Similar terms are used throughout the description to represent similar elements.

[0028] For those skilled in the art, this invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples.

[0029] This invention provides an assembly and disassembly fixture for rocket refueling valves. For ease of description, the assembly and disassembly fixture for rocket refueling valves provided by this invention will be referred to as "this fixture" or "the fixture" below.

[0030] like Figure 1 As shown, this tooling includes a support (1), a base (2), a top seat (3), and a tightening nut wrench (4). The support (1), base (2), and top seat (3) together form a frame structure, wherein the top seat (3) is located directly above the base (2), and the two ends of the support (1) are connected to the base (2) and the top seat (3) respectively; the top seat (3) has a wrench mounting hole for installing the tightening nut wrench (4) at its center, and the tightening nut wrench (4) is installed on the top seat (3) through the wrench mounting hole; the base (2) is a hollow flange structure and its flange has bolt holes, which are compatible with the bolt holes of the filling valve flange.

[0031] Furthermore, the flange structure of the base (2) of this tooling is also provided with a positioning coaxial structure (6), which is compatible with the positioning coaxial structure of the filling valve flange.

[0032] During the assembly of the clamping nut (not shown in the figure), because the base of this fixture is a hollow flange structure, the clamping nut can be pre-positioned on the filling valve body, and then the fixture can be fitted onto the filling valve, so that the clamping nut is within the frame structure of the fixture. Next, the flange of the fixture base and the flange of the filling valve are pre-fixed with bolts, and then fine-tuned to ensure that the positioning coaxial structure on the fixture base flange and the positioning coaxial structure on the filling valve flange are in sync. Finally, the bolts are tightened to secure the fixture base flange and the filling valve flange. Finally, the clamping nut is tightened using a clamping nut wrench installed in the center of the top seat.

[0033] During the process of disassembling the clamping nut, directly put this tooling on the filling valve, and then repeat the above operation steps of tightening and fixing this tooling to the filling valve flange. Then use the clamping nut wrench installed in the center of the top seat to loosen the clamping nut.

[0034] The positioning coaxial structure of the base flange of this tooling mates with the positioning coaxial structure of the filling valve flange, and can be positioned using a stop flange, reamed hole bolts, positioning pins, or tongue and groove sealing. In a preferred embodiment, stop flange positioning is used; in a more preferred embodiment, tongue and groove sealing positioning is used (e.g.,...). Figure 3 (As shown). Those skilled in the art will understand that the base of this tooling is provided with a positioning coaxial structure, which mates with the positioning coaxial structure on the filling valve flange, providing higher coaxiality compared to existing assembly and disassembly tooling that is fixed to the filling valve flange only by bolts.

[0035] For purposes such as reducing tooling processing costs or facilitating portability, those skilled in the art may design this tooling to be detachable. For example, the support can be rigidly connected and fixed to the base and / or top seat using bolt connections, screw connections, snap-fit ​​connections, wedge connections, etc.

[0036] In some embodiments, the support of this tooling is detachably connected to the base. In a preferred embodiment, the bottom of the tooling support is provided with a connecting lug with bolt holes, which is connected to the base by bolts (e.g., Figure 1 (As shown).

[0037] In some embodiments, the support of this tooling is detachably connected to the top seat. In a preferred embodiment, the top of the support has a square hole, and the edge of the top seat has a square block that fits the square hole, with the square hole and the square block having a clearance fit (e.g., Figure 1 (As shown).

[0038] In some implementations, the connection between the support, base, and top seat of this tooling is detachable. In a preferred embodiment, the bottom of the support of this tooling is provided with a connecting lug plate with bolt holes, which is connected to the base by bolts; at the same time, the top of the support of this tooling is provided with a square hole, and the edge of the top seat is provided with a square block that fits the square hole, with the square hole and the square block having a clearance fit (e.g., Figure 1 (As shown).

[0039] Those skilled in the art will understand that the top seat of this tooling serves two purposes: firstly, it forms a frame together with the base and support to prevent parts from flying off; secondly, it houses the tightening nut wrench at the center, ensuring that the wrench remains coaxial with the parts and the filling valve during operation. Therefore, this invention does not impose any particular limitation on the shape of the top seat, as long as it fulfills the above two functions. For example, it can be circular, flat elliptical, rectangular, fan-shaped, or trapezoidal. In a preferred embodiment, the top seat of this tooling adopts a rectangular plate structure (e.g., Figure 1 (As shown).

[0040] Those skilled in the art will understand that the support of this tooling serves two purposes: firstly, it forms a frame with the base and top to prevent parts from flying off; secondly, it provides stable and rigid support to the base and top to prevent coaxial deviation during part assembly and disassembly. Therefore, this invention does not impose any particular limitation on the shape of the support, as long as it fulfills the above two functions. For example, the support can be an integral cylinder or a split pillar, etc. Figure 1 As shown, the tooling uses two symmetrical supports as bases. Those skilled in the art will understand that the present invention can also use more supports, and these supports are preferably evenly distributed on the flange.

[0041] This tooling has a wrench mounting hole at the center of the top seat. A nut tightening wrench passes through this hole and is mounted on the top seat. The wrench and mounting hole can be fitted with either a clearance fit or a threaded fit. During use, the lower end of the wrench connects to the end face of the nut, and axial rotation is used to assemble or disassemble the nut. In a preferred embodiment, the wrench and mounting hole are threaded, which provides better mechanical support for the wrench and further ensures the coaxiality of the tooling during use.

[0042] Those skilled in the art will understand that the end face structure of a clamping nut is specifically designed to withstand high preload and facilitate the use of specialized tools. These structures aim to provide a larger contact area and better force transmission to prevent slippage and protect the nut itself. Common end face structures include end face grooves, end face blind holes, and end face drive lines. The lower end of the clamping nut wrench in this tooling is provided with a connecting mechanism, which needs to connect with the end face of the clamping nut during use. Those skilled in the art can design the connecting mechanism at the lower end of the clamping nut wrench to match the end face structure of the clamping nut as needed. In a preferred embodiment of this utility model, the connecting mechanism of the clamping nut wrench of this tooling is a square structure (e.g., Figure 1 As shown in the figure, the connecting mechanism engages with the square end face of the clamping nut during use.

[0043] In a further implementation, the upper end of the clamping nut wrench of this tooling is provided with a torque wrench interface. During use, the upper end of the clamping nut wrench is connected to a torque wrench, and the clamping nut is tightened according to the specified torque value.

[0044] It should be understood that the above-described embodiments or examples of this utility model can be combined with each other and have corresponding technical effects.

[0045] In addition to rocket refueling valves, the assembly and disassembly tooling of this utility model can also be extended to the following scenarios: (1) assembly of other valves with spring pre-tightening structures, such as oxidizer valves, fuel valves and other similar structural components in aerospace propulsion systems; (2) nut tightening process of similar aerospace products, such as occasions in spacecraft such as satellites and missiles where large torque assembly is required; (3) similar assembly scenarios of ground equipment, such as occasions in which assembly force needs to be controlled, such as industrial pipeline valves, high-pressure vessel end caps and other occasions.

[0046] Those skilled in the art can also design assembly and disassembly tooling of corresponding specifications by adjusting the base flange specifications, fixed support spacing and tightening nut wrench size according to the specific size requirements of different products, so as to achieve serialized application.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An assembly and disassembly tooling for rocket refueling valves, characterized in that, The device includes a support (1), a base (2), a top seat (3), and a tightening nut wrench (4). The support (1), base (2), and top seat (3) together form a frame structure, wherein the top seat (3) is located above the base (2). The two ends of the support (1) are connected to the base (2) and the top seat (3) respectively. The center of the top seat (3) is provided with a wrench mounting hole for installing the tightening nut wrench (4). The tightening nut wrench (4) passes through the wrench mounting hole and is installed on the top seat (3). The base (2) is a hollow flange structure and its flange is provided with bolt holes, which are adapted to the bolt holes of the filling valve flange.

2. The assembly and disassembly tooling according to claim 1, characterized in that, The base (2) has a positioning coaxial structure (6) on its flange structure, which is adapted to the positioning coaxial structure of the filling valve flange.

3. The assembly and disassembly tooling according to claim 2, characterized in that, The positioning coaxial structure (6) is selected from the stop positioning structure, the reamed hole bolt positioning structure, the positioning pin structure, or the tenon and groove sealing positioning structure.

4. The assembly and disassembly tooling according to claim 2, characterized in that, The positioning coaxial structure (6) is a tenon-groove sealing positioning structure.

5. The assembly and disassembly tooling according to claim 1, 2, 3 or 4, characterized in that, The support (1) is detachably connected to the base (2) and / or the top seat (3).

6. The assembly and disassembly tooling according to claim 5, characterized in that, The support (1) is connected to the base (2) and / or the top seat (3) by means of bolt connection, screw connection, snap connection or wedge connection.

7. The assembly and disassembly tooling according to claim 6, characterized in that, The bottom of the support (1) is provided with a connecting lug plate with bolt holes, which is connected to the base (2) by bolts (5).

8. The assembly and disassembly tooling according to claim 6 or 7, characterized in that, The top of the support (1) is provided with a square hole, and the edge of the top seat (3) is provided with a square block that matches the square hole, with the square hole and the square block fitting together with a gap.

9. The assembly and disassembly tooling according to claim 1, 2, 3 or 4, characterized in that, The tightening nut wrench (4) is threaded into the wrench mounting hole at the center of the top seat (3).

10. The assembly and disassembly tooling according to claim 1, 2, 3 or 4, characterized in that, The lower end of the tightening nut wrench (4) is provided with a connecting mechanism (7) that connects to the end of the tightening nut. The connecting mechanism (7) at the lower end of the tightening nut wrench (4) is square, so that it engages with the square groove at the end of the tightening nut.

11. The assembly and disassembly tooling according to claim 10, characterized in that, The upper end of the tightening nut wrench (4) is provided with a torque wrench interface.

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