Pressure-resistant cylinder structure adopting auxiliary support

Abstract

The invention provides a pressure-resistant cylinder structure adopting an auxiliary support. The pressure-resistant cylinder structure comprises an outer cylinder body, an inner cylinder body and an auxiliary support assembly, more than one group of threaded holes are formed in the side wall of the outer cylinder body; each group of threaded holes comprises more than two threaded holes, and the more than two threaded holes are arranged along the longitudinal direction of the outer cylinder body; the more than one auxiliary supporting assembly is mounted on the inner circumferential surface of the outer cylinder body and is connected with the threaded holes in the outer cylinder body; initially, when the inner barrel is not filled into the outer barrel, the maximum effective inner diameter of the outer barrel provided with the auxiliary supporting assembly is larger than the outer diameter of the inner barrel; the inner barrel is filled into the outer barrel, and after the inner barrel is filled in place, the auxiliary supporting assembly moves inwards and abuts against the outer circumferential face of the inner barrel, so that the inner barrel and the outer barrel are locked and connected through the auxiliary supporting assembly. The pressure bearing capacity of the outer barrel can be improved, the occupied space is small, and the weight is light.

Description

Technical Field

[0001] The invention belongs to the technical field of aerospace machinery and relates to a pressure-resistant cylinder structure using auxiliary supports. Background Art

[0002] Deep-sea launch vehicles must be able to maintain a tight seal and withstand external underwater pressure. Consequently, these structures often face challenges in achieving a balance between sealing coordination of the connecting structure under high external pressure, as well as overall technical requirements such as weight and range. Underwater vehicles typically incorporate a pressure-resistant cylinder capable of withstanding external pressure to bear the loads of the underwater navigation section. Conventional pressure-resistant cylinders are thin-walled, but due to multiple constraints such as space and weight, thin-walled cylinders of equal thickness sometimes fail to meet load-bearing requirements. Therefore, there is an urgent need to develop a pressure-resistant cylinder structure that occupies a small space, is lightweight, and offers improved pressure-bearing capacity. Summary of the Invention

[0003] The present invention aims to solve at least one of the problems existing in the prior art.

[0004] To this end, the present invention provides a pressure-resistant cylinder structure using auxiliary supports, which can improve the pressure-bearing capacity of the outer cylinder and has a small space occupation and light weight.

[0005] The technical solution of the present invention is:

[0006] A pressure-resistant cylinder structure with auxiliary support, comprising: an outer cylinder, an inner cylinder and an auxiliary support assembly;

[0007] The side wall of the outer cylinder is provided with one or more threaded holes; each group of threaded holes includes two or more threaded holes, and the two or more threaded holes are arranged along the longitudinal direction of the outer cylinder;

[0008] At least one auxiliary support assembly is mounted on the inner circumferential surface of the outer cylinder and connected to the threaded hole on the outer cylinder; initially, that is, when the inner cylinder is not loaded into the outer cylinder, the maximum effective inner diameter of the outer cylinder equipped with the auxiliary support assembly is larger than the outer diameter of the inner cylinder;

[0009] The inner cylinder is loaded into the outer cylinder. When the inner cylinder is loaded into place, the auxiliary support assembly moves inward and contacts the outer circumferential surface of the inner cylinder, so that the inner cylinder and the outer cylinder are locked and connected through the auxiliary support assembly.

[0010] Furthermore, the auxiliary support assembly includes: a ball head screw, an auxiliary support block and an auxiliary support block cover plate;

[0011] One end of the ball head screw is provided with a ball head, and the other end is processed with an external thread;

[0012] The auxiliary support block is processed with two or more ball sockets, and the ball sockets can cooperate with the ball heads of the ball head screws;

[0013] The auxiliary support block cover plate is processed with a spherical groove that can cooperate with the ball head of the ball head screw, and the bottom of the spherical groove is processed with a through hole;

[0014] The auxiliary support assembly is assembled as follows: the ball head of the ball head jack screw is installed in the ball socket of the auxiliary support block, and after the through hole of the auxiliary support block cover plate passes through the external threaded end of the ball head jack screw, the spherical groove is opposite to the ball socket, so that the spherical groove is fitted and installed on the outside of the ball head of the ball head jack screw, and limits the ball head of the ball head jack screw; and the auxiliary support block cover plate is fixed to the auxiliary support block by screws.

[0015] Furthermore, each ball socket of the auxiliary support block is equipped with a ball head screw and an auxiliary support block cover plate matched therewith.

[0016] Furthermore, the cooperation relationship between the auxiliary support assembly and the outer cylinder and the inner cylinder is as follows:

[0017] Each auxiliary support assembly is placed on the inner circumference of the outer cylinder, and the external thread of the ball head screw is connected to the threaded hole on the side wall of the outer cylinder. The number of ball head screws of each auxiliary support assembly is equal to the number of threaded holes in each group of threaded holes of the outer cylinder, and the positions are opposite to each other.

[0018] Initially, the auxiliary support block of the auxiliary support assembly contacts the inner circumference of the outer cylinder, reserving space for the installation of the inner cylinder; when the inner cylinder is installed in place in the outer cylinder, the auxiliary support block is driven to move toward the inner cylinder by rotating the ball head screw until the auxiliary support block contacts the outer circumference of the inner cylinder, making the inner cylinder and the outer cylinder an integral structure.

[0019] Furthermore, the outer cylinder is a thin-walled cylinder made of aluminum alloy.

[0020] Furthermore, one or more annular reinforcement ribs and one or more longitudinal reinforcement ribs are provided on the inner circumferential surface of the outer cylinder.

[0021] Furthermore, the inner cylinder and the outer cylinder after locking connection may be coaxial or non-coaxial.

[0022] Furthermore, a square blind hole is processed on the end surface of the external thread of the ball head screw, and the ball head screw can be rotated by cooperating with a square wrench and the square blind hole of the ball head screw.

[0023] By applying the above technical solution, the present invention has the following beneficial effects:

[0024] (1) The present invention proposes a pressure-resistant cylinder structure with auxiliary support. With slight changes to the outer cylinder structure (addition of threaded holes and plugging holes), an auxiliary support block assembly is provided by effectively utilizing the space between the outer cylinder and the inner cylinder, thereby effectively improving the pressure-bearing capacity of the pressure-resistant cylinder. The pressure-resistant cylinder structure can be used in situations where auxiliary support is used, and can also be applied to other cylinder structure designs that require improved pressure-bearing capacity.

[0025] (2) The auxiliary support block assembly of the present invention is operated by twisting the ball head screw with a square wrench, which is simple, fast and reliable. The entire structure is small in size and light in weight. The structure can realize multiple repeated operations of switching between the initial state and the loaded state, which is simple to operate and convenient to use.

[0026] (3) The ball head of the ball head screw of the auxiliary support block assembly of the present invention is matched with the ball socket of the auxiliary support block. The spherical match has a 360° adjustment capability and can adapt to the manufacturing deviations of the outer tube threaded hole, the ball head screw and the auxiliary support block ball socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are included to provide a further understanding of the embodiments of the present invention, constitute a part of the specification, illustrate the embodiments of the present invention, and together with the description, explain the principles of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0028] Figure 1 This is a composition diagram of the pressure tube structure;

[0029] Figure 2 for Figure 1 A partial enlarged view of the location of the auxiliary support assembly;

[0030] Figure 3 A schematic diagram of the auxiliary support assembly of the pressure-resistant cylinder structure resting against the inner cylinder;

[0031] Figure 4 for Figure 3 A partial enlarged view of the location of the auxiliary support assembly;

[0032] Figure 5 is an axonometric drawing of the auxiliary support assembly;

[0033] Figure 6 (a) is the main view of the auxiliary support assembly, Figure 6 (b) Figure 6 (a) a cross-sectional view;

[0034] Figure 7 (a) Figure 1 The main view, Figure 7 (b) Figure 7 (a) a cross-sectional view;

[0035] Figure 8 for Figure 7 (b) A partial enlarged view of the auxiliary support assembly;

[0036] Figure 9 (a) Figure 3 The main view, Figure 9 (b) Figure 9 (a) a cross-sectional view;

[0037] Figure 10 for Figure 9 (b) A partial enlarged view of the auxiliary support assembly;

[0038] Among them, 1. Auxiliary support block; 2. Auxiliary support block cover plate; 3. Ball head top screw; 4. Outer cylinder; 5. Inner cylinder. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0042] This embodiment discloses a pressure-resistant cylinder structure using auxiliary support, comprising: an outer cylinder 4, an inner cylinder 5 and an auxiliary support assembly;

[0043] The outer cylinder 4 is a thin-walled cylinder made of aluminum alloy. One or more annular reinforcement ribs and one or more longitudinal reinforcement ribs are provided on the inner circumference of the outer cylinder 4 to improve the ability of the pressure-resistant cylinder structure to withstand external pressure.

[0044] The side wall of the outer cylinder 4 is provided with one or more threaded holes; each threaded hole group includes two or more threaded holes, and the two or more threaded holes are arranged along the longitudinal direction of the outer cylinder 4; the threaded holes are used to connect with the auxiliary support assembly;

[0045] One or more auxiliary support assemblies are mounted on the inner circumferential surface of the outer cylinder 4 and connected to the threaded holes on the outer cylinder 4. Initially, that is, when the inner cylinder 4 is not loaded into the outer cylinder 4, the position of the auxiliary support assemblies does not interfere with the assembly of the inner cylinder 5 inside the outer cylinder 4. That is, the maximum effective inner diameter of the outer cylinder 4 equipped with the auxiliary support assemblies is larger than the outer diameter of the inner cylinder 5, so as to facilitate the axial loading of the inner cylinder 5.

[0046] The inner cylinder 5 is loaded into the outer cylinder 4. Initially, a certain gap is set between the auxiliary support assembly and the inner cylinder 5. Figure 1-Figure 2 As shown, when the inner cylinder 5 is loaded into place, the auxiliary support assembly moves inward and presses against the outer circumference of the inner cylinder 5, so that the inner cylinder 5 and the outer cylinder 4 are locked and connected through the auxiliary support assembly, as shown in the attached figure. Figure 3-Figure 4 As shown;

[0047] In this embodiment, the inner cylinder 5 and the outer cylinder 4 after being locked and connected can be coaxial or non-coaxial.

[0048] Among them, see Appendix Figure 5-Figure 6, the auxiliary support assembly includes: a ball head screw 3, an auxiliary support block 1, an auxiliary support block cover 2 and screws;

[0049] One end of the ball head screw 3 is provided with a ball head, and the other end is processed with an external thread, and the end face where the external thread is located is processed with a square blind hole;

[0050] The auxiliary support block 1 is a long strip plate, and has two or more ball sockets processed thereon, which can cooperate with the ball head of the ball head screw 3;

[0051] The auxiliary support block cover plate 2 is processed with a spherical groove that can cooperate with the ball head of the ball head screw 3, and the bottom of the spherical groove is processed with a through hole;

[0052] The auxiliary support assembly is assembled as follows: the ball head of the ball head jack screw 3 is installed in the ball socket of the auxiliary support block 1, and after the through hole of the auxiliary support block cover plate 2 passes through the external threaded end of the ball head jack screw 3, the spherical groove is opposite to the ball socket, so that the spherical groove is fitted on the outside of the ball head of the ball head jack screw 3 and limits the ball head of the ball head jack screw 3 to prevent the ball head jack screw from falling out of the ball socket; and the auxiliary support block cover plate 2 is fixed to the auxiliary support block 1 by four screws; wherein, each ball socket of the auxiliary support block 1 is equipped with a ball head jack screw 3 and an auxiliary support block cover plate 2 matched therewith;

[0053] The coordination relationship between the auxiliary support assembly, the outer cylinder 4, and the inner cylinder 5 is as follows:

[0054] The auxiliary support assembly is placed on the inner circumference of the outer cylinder 4, and the external thread of the ball head screw 3 is connected to the threaded hole on the side wall of the outer cylinder 4. The number of ball head screws 3 of each auxiliary support assembly is equal to the number of threaded holes in each group of threaded holes of the outer cylinder 4, and the positions are one-to-one opposite; initially, the auxiliary support block 1 of the auxiliary support assembly is close to the inner circumference of the outer cylinder 4, leaving enough space for the subsequent installation of the inner cylinder 5, as shown in the attached figure. Figure 7-Figure 8 As shown; when the inner cylinder 5 is loaded into the outer cylinder 4, the square wrench is used to cooperate with the square blind hole of the ball head screw 3, and the ball head screw 3 is rotated to drive the auxiliary support block 1 to move toward the direction of the inner cylinder 5 until the auxiliary support block 1 is pressed against the outer circumference of the inner cylinder 5, so that the inner cylinder 5 and the outer cylinder 4 become an integral structure, as shown in the attached figure. Figure 9-10 As shown, the inner cylinder 5 can bear the external pressure together with the outer cylinder 4, thereby improving the pressure-bearing capacity of the pressure-resistant cylinder structure.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0057] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pressure-resistant cylinder structure with auxiliary support, characterized in that: include: Outer cylinder, inner cylinder and auxiliary support assembly; The side wall of the outer cylinder is provided with one or more threaded holes; each group of threaded holes includes two or more threaded holes, and the two or more threaded holes are arranged along the longitudinal direction of the outer cylinder; At least one auxiliary support assembly is mounted on the inner circumferential surface of the outer cylinder and connected to the threaded hole on the outer cylinder; initially, that is, when the inner cylinder is not loaded into the outer cylinder, the maximum effective inner diameter of the outer cylinder equipped with the auxiliary support assembly is larger than the outer diameter of the inner cylinder; The inner cylinder is loaded into the outer cylinder. When the inner cylinder is loaded into place, the auxiliary support assembly moves inward and contacts the outer circumferential surface of the inner cylinder, so that the inner cylinder and the outer cylinder are locked and connected through the auxiliary support assembly.

2. A pressure-resistant cylinder structure with auxiliary support according to claim 1, characterized in that: The auxiliary support assembly includes: a ball head screw, an auxiliary support block and an auxiliary support block cover plate; One end of the ball head screw is provided with a ball head, and the other end is processed with an external thread; The auxiliary support block is processed with two or more ball sockets, and the ball sockets can cooperate with the ball heads of the ball head screws; The auxiliary support block cover plate is processed with a spherical groove that can cooperate with the ball head of the ball head screw, and the bottom of the spherical groove is processed with a through hole; The auxiliary support assembly is assembled as follows: the ball head of the ball head jack screw is installed in the ball socket of the auxiliary support block, and after the through hole of the auxiliary support block cover plate passes through the external threaded end of the ball head jack screw, the spherical groove is opposite to the ball socket, so that the spherical groove is fitted and installed on the outside of the ball head of the ball head jack screw, and limits the ball head of the ball head jack screw; and the auxiliary support block cover plate is fixed to the auxiliary support block by screws.

3. A pressure-resistant cylinder structure with auxiliary support according to claim 2, characterized in that: Each ball socket of the auxiliary support block is equipped with a ball head screw and an auxiliary support block cover plate matched therewith.

4. A pressure-resistant cylinder structure with auxiliary support according to claim 2, characterized in that: The coordination relationship between the auxiliary support assembly, the outer cylinder and the inner cylinder is as follows: Each auxiliary support assembly is placed on the inner circumference of the outer cylinder, and the external thread of the ball head screw is connected to the threaded hole on the side wall of the outer cylinder. The number of ball head screws of each auxiliary support assembly is equal to the number of threaded holes in each group of threaded holes of the outer cylinder, and the positions are opposite to each other. Initially, the auxiliary support block of the auxiliary support assembly contacts the inner circumference of the outer cylinder, reserving space for the installation of the inner cylinder; when the inner cylinder is installed in place in the outer cylinder, the auxiliary support block is driven to move toward the inner cylinder by rotating the ball head screw until the auxiliary support block contacts the outer circumference of the inner cylinder, making the inner cylinder and the outer cylinder an integral structure.

5. A pressure-resistant cylinder structure with auxiliary support according to any one of claims 1 to 4, characterized in that: The outer cylinder is a thin-walled cylinder made of aluminum alloy.

6. A pressure-resistant cylinder structure with auxiliary support according to any one of claims 1 to 4, characterized in that: The inner circumferential surface of the outer cylinder is provided with one or more annular reinforcing ribs and one or more longitudinal reinforcing ribs.

7. A pressure-resistant cylinder structure with auxiliary support according to any one of claims 1 to 4, characterized in that: The inner cylinder and the outer cylinder after locking connection can be coaxial or not.

8. The pressure-resistant cylinder structure with auxiliary support according to claim 2, characterized in that: The end surface of the ball head screw where the external thread is located is processed with a square blind hole, and the ball head screw can be rotated by matching a square wrench with the square blind hole of the ball head screw.

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