Thin-wall ellipsoid part supporting and tightening tool

Abstract

The utility model provides a thin-wall ellipsoid part tight supporting tool which comprises a fixed base, a limiting device, a plurality of supporting devices and a driving device, and the supporting devices, the driving device and the limiting device are all located on the fixed base. In the middle of the fixed base, one end of the limiting device is connected with the fixed base, and the other end of the limiting device is used for fixing the bottom end of the thin-wall storage box; the supporting device and the driving device are arranged in the circumferential direction of the fixed base, and the driving device is used for driving the supporting device so that one end of the supporting device can move in the radial direction of the fixed base and abut against the inner wall of the bottom of the thin-wall storage box, and therefore the bottom of the thin-wall storage box can be supported. According to the tight supporting tool, clamping can be facilitated, the clamping efficiency is improved, it can be guaranteed that the roundness of the clamped part meets the design requirement, and subsequent machining of the whole rocket storage tank is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of rocket tanks, in particular to a thin-walled ellipsoid part supporting tool. Background Art

[0002] With the rapid development of the aerospace industry, various technologies involved in the rocket field have also achieved rapid progress.

[0003] The thin-walled aluminum alloy bottom of a rocket tank has a semi-ellipsoidal profile, with a maximum diameter of approximately 3350mm and a maximum wall thickness of less than 25mm. This thin-walled bottom is typically welded together, and deformation during the welding process can cause the part surface to deviate from the theoretical profile, making subsequent clamping and processing more difficult.

[0004] Existing clamping processes generally use mechanical tooling for manual clamping and pressing, which is labor-intensive, inefficient, and poorly precise. Existing clamping tooling typically uses multiple contoured support blocks that move radially from the inside out, forcing local deformation of the part to achieve the clamping purpose.

[0005] Traditional tooling uses manual adjustment, and multiple contoured supports move independently. The position of the contoured supports needs to be adjusted repeatedly, which reduces production efficiency. In addition, the roundness of the parts after clamping can only reach 0.6~0.8mm, which seriously affects the subsequent processing and welding of the entire rocket tank, and thus affects the performance of the product.

[0006] There is an urgent need to provide a thin-walled ellipsoidal part support fixture to simplify the clamping process, improve clamping efficiency, ensure that the roundness of the parts after clamping meets the design requirements, and facilitate the subsequent processing of the entire rocket tank. Summary of the Invention

[0007] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a thin-walled ellipsoidal part supporting tooling, which is convenient for quickly adjusting the radial displacement of the supporting device to quickly support the bottom of the thin-walled tank, and can improve work efficiency. It can also ensure that the roundness of the parts after clamping meets the design requirements, and facilitate the subsequent processing of the entire rocket tank.

[0008] The utility model provides a thin-walled ellipsoid part supporting tooling, comprising a fixed base, a limiting device, a plurality of supporting devices and a driving device, wherein the supporting device, the driving device and the limiting device are all located on the fixed base; in the middle of the fixed base, one end of the limiting device is connected to the fixed base, and the other end is used to fix the bottom end of the thin-walled storage tank; the supporting device and the driving device are arranged along the circumference of the fixed base, and the driving device is used to drive the supporting device so that one end of the supporting device moves along the radial direction of the fixed base and abuts against the inner wall of the bottom of the thin-walled storage tank, thereby completing the support of the bottom of the thin-walled storage tank.

[0009] In one embodiment, the fixed base is a disc structure; the limiting device includes a limiting column, an upper locking nut and a lower locking nut, one end of the limiting column is fixedly connected to the fixed base, and the other end passes through the lower locking nut, the thin-walled tank bottom and the upper locking nut in sequence, and is screwed to the limiting column through the upper locking nut and the lower locking nut to fix the bottom end of the thin-walled tank bottom on the limiting column.

[0010] In one example, the support device has a substantially trapezoidal shape, and the large-area end of the support device is used to support the inner wall of the tank bottom. The large-area end of the support device is provided with a curved surface matching the inner wall of the tank bottom.

[0011] In one example, the driving device includes an air supply device, a cylinder assembly, a steering force assembly and a connecting assembly, wherein the air supply device is connected to one end of the cylinder assembly, the telescopic end of the cylinder assembly is connected to one end of the steering force assembly, the other end of the steering force assembly is connected to one end of the connecting assembly, and the other end of the connecting assembly is used to connect to the supporting device.

[0012] In one example, the gas supply device includes at least one gas cylinder, a first delivery pipe, a second delivery pipe and an air supply ring; the gas cylinder is fixed on the limiting device, the output end of the gas cylinder is connected to the input end of the first delivery pipe, the output end of the first delivery pipe is connected to the input end of the air supply ring, the output end of the air supply ring is connected to the input end of the second delivery pipe, and the output end of the second delivery pipe is connected to one end of the cylinder assembly.

[0013] In one example, the extension and contraction direction of the cylinder assembly is parallel to the axis of the fixed base.

[0014] In one example, the steering force assembly includes a steering force rod, a first locking bolt, and a fixing platform. The steering force rod is provided with a first rotation hole in the middle and second rotation holes at both ends. The first locking bolt fixes the steering force rod to an end of the fixing platform away from the fixed base, and the steering force rod can rotate circumferentially along the first locking bolt. The two ends of the steering force rod are respectively connected to the cylinder assembly and the connecting assembly via a second locking bolt and a third locking bolt.

[0015] In one example, the steering force-enhancing rod includes a first steering rod and a second steering rod, and a transition portion where the first steering rod and the second steering rod are connected to each other forms an angle.

[0016] In one example, one end of the fixed platform is fixedly connected to the fixed base, and the other end is provided with a double raised platform arranged side by side, and the double raised platform is provided with the locking hole; one end of the first locking bolt passes through the locking hole of the double raised platform on one side, the first rotating hole and the locking hole of the double raised platform on the other side in sequence, and is then locked by a nut, and the input end of the steering booster rod is connected to the telescopic end of the cylinder assembly through the second locking bolt.

[0017] In one example, the connecting assembly includes a connecting rod, a first connecting block, a second connecting block and a third connecting block; the first connecting block and the second connecting block are U-shaped components, the third connecting block includes an integrally formed base plate and a raised plate, the raised plate is located on the side of the base plate away from the support device and is centrally arranged, the first connecting block and the second connecting block are separated at both ends of the connecting rod and are threadedly connected to the connecting rod, and the distance between the first connecting block and the second connecting block is adjusted by rotating the connecting rod; the first connecting block is connected to one end of the steering boost rod through a third locking bolt and the steering boost rod can rotate circumferentially along the third locking bolt, the second connecting block is connected to the raised plate through a fourth locking bolt, the base plate is tightly attached to the surface of the support device and is fixedly connected to the support device by bolts.

[0018] Compared to the prior art, the present invention has at least one of the following beneficial effects: The present invention provides a thin-walled ellipsoidal component support fixture comprising a fixed base, a limiting device, multiple support devices, and a drive device. In this support fixture, the support devices and drive devices are arranged circumferentially along the fixed base. The drive device can drive one end of the support device to move radially along the fixed base and abut against the inner wall of the thin-walled tank bottom, thereby supporting the thin-walled tank bottom. Furthermore, the drive device replaces manual adjustment, facilitating rapid adjustment of the radial displacement of the support device, thereby rapidly supporting the thin-walled tank bottom and improving efficiency and adjustment accuracy.

[0019] One end of the limiting device of the present application is connected to the fixed base, and the other end is used to fix the bottom end of the thin-walled storage tank. On the one hand, it ensures that the bottom end of the thin-walled storage tank is firmly fixed and avoids axial movement of the bottom end of the thin-walled storage tank.

[0020] It should be understood that the above general description and the following detailed description are merely exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings are part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The accompanying drawings and the description of the specification are used to explain the principles of the present utility model.

[0022] Figure 1 This is a structural diagram of the tightening tooling in an embodiment of the present utility model;

[0023] Figure 2 2 is a simplified structural diagram of the driving device in an embodiment of the present utility model.

[0024] Description of reference numerals:

[0025] 1Fixed base 2Limiting device

[0026] 3 Support device 4 Air supply device

[0027] 5 cylinder assembly 6 steering boost assembly

[0028] 7 Connecting Components DETAILED DESCRIPTION

[0029] Various exemplary embodiments of the present invention will now be described in detail. This description should not be considered as limiting the present invention, but should be understood as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0030] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments described herein without departing from the scope or spirit of the present invention. Other embodiments derived from the present invention will be apparent to those skilled in the art. The present description and examples are intended to be illustrative only.

[0031] like Figure 1 and Figure 2 As shown, the present invention provides a thin-walled ellipsoidal component tightening fixture, comprising a fixed base 1, a limiting device 2, multiple supporting devices 3, and a driving device. The supporting devices 3, driving device, and limiting device 2 are all located on the fixed base 1. In the middle of the fixed base 1, one end of the limiting device 2 is connected to the fixed base 1, and the other end is used to fix the bottom of the thin-walled tank. The supporting devices 3 and the driving device are arranged circumferentially along the fixed base 1. The driving device is used to drive the supporting devices 3, causing one end of the supporting devices 3 to move radially along the fixed base 1 and abut against the inner wall of the thin-walled tank bottom, thereby providing support for the thin-walled tank bottom.

[0032] Specifically, the present invention discloses a thin-walled ellipsoidal component support fixture comprising a fixed base 1, a limiting device 2, multiple support devices 3, and a drive device. The support devices 3 and the drive device are arranged circumferentially along the fixed base 1. The drive device can drive one end of the support device 3 to move radially along the fixed base 1 and abut against the inner wall of the thin-walled tank bottom, thereby supporting the thin-walled tank bottom. The drive device replaces traditional manual adjustment methods, facilitating automatic and rapid adjustment of the radial displacement of the support device 3 to quickly support the thin-walled tank bottom, improving work efficiency and adjustment accuracy.

[0033] In addition, one end of the limiting device 2 of the tightening tool in the present application is connected to the fixed base 1, and the other end is used to fix the bottom end of the thin-walled tank. On the one hand, it ensures that the middle part of the bottom end of the thin-walled tank is firmly fixed to avoid axial movement of the bottom end of the thin-walled tank. At the same time, through the cooperation of the driving device and the supporting device 3, the supporting device 3 effectively supports the inner wall of the bottom end of the thin-walled tank, which can further limit the radial movement of the bottom of the thin-walled tank, ensuring that the roundness of the parts after clamping meets the design requirements, and facilitating the subsequent processing of the entire rocket tank.

[0034] In this embodiment, to ensure structural stability of the fixed base 1, for example, the fixed base 1 is a disc-shaped structure. To facilitate securing the thin-walled tank bottom with the retaining device 2, for example, the retaining device includes a retaining post, an upper locking nut, and a lower locking nut. One end of the retaining post is connected to the fixed base 1, while the other end passes through the lower locking nut, the thin-walled tank bottom, and the upper locking nut. The upper locking nut and lower locking nut are then threaded together with the retaining post to secure the bottom end of the thin-walled tank bottom to the retaining post.

[0035] In this embodiment, to facilitate close contact between support device 3 and the inner wall of the tank bottom, support device 3 is generally trapezoidal in shape, for example. The large end of support device 3 is used to support the inner wall of the thin-walled tank bottom. This large end of support device 3 is provided with a curved surface that mates with the inner wall of the thin-walled tank bottom.

[0036] like Figure 1 and Figure 2As shown, to facilitate control and adjustment of the drive device, for example, the drive device includes an air supply device 4, a cylinder assembly 5, a steering force assembly 6, and a connecting assembly 7. The air supply device 4 is connected to one end of the cylinder assembly 5, the telescopic end of the cylinder assembly 5 is connected to one end of the steering force assembly 6, the other end of the steering force assembly 6 is connected to one end of the connecting assembly 7, and the other end of the connecting assembly 7 is connected to the support device 3. The air supply device 4 inflates the cylinder assembly 5. The gas pressure causes the telescopic end of the cylinder assembly 5 to move the steering force assembly 6, thereby moving the connecting assembly 7. The entire drive device assembly is tightly coordinated, making it easy to operate, and effectively converting the telescopic movement of the cylinder into a tightening movement of the support device.

[0037] In this embodiment, the gas supply device 4 includes at least one gas cylinder, a first delivery pipe, a second delivery pipe, and a gas supply ring. The gas cylinder is fixed to the limiting device 2, the output end of the gas cylinder is connected to the input end of the first delivery pipe, the output end of the first delivery pipe is connected to the input end of the gas supply ring, the output end of the gas supply ring is connected to the input end of the second delivery pipe, and the output end of the second delivery pipe is connected to one end of the cylinder assembly. It should be noted that in actual application, in order to ensure sufficient gas supply, the number of gas cylinders can be increased according to actual needs. For example, multiple gas cylinders can be evenly arranged on the fixed base 1 around the limiting device 2.

[0038] In addition, in order to improve the working efficiency of the cylinder assembly 5, for example, the extension and contraction direction of the cylinder assembly can be parallel to the axis of the fixed base 1.

[0039] like Figure 1 and Figure 2 As shown, the steering boost assembly 6 includes a steering boost rod, a first locking bolt, and a fixing platform. The steering boost rod has a first rotation hole in the middle and second rotation holes at both ends. The first locking bolt secures the steering boost rod to the end of the fixing platform away from the fixed base 1, allowing the steering boost rod to rotate circumferentially along the first locking bolt. The ends of the steering boost rod are connected to the cylinder assembly 5 and the connecting assembly 7 via the second and third locking bolts, respectively.

[0040] In this embodiment, in order to change the direction of force transmission and ensure that the output of the steering force component is quickly transmitted to the connecting component 7, so that the steering force component can quickly apply pressure to the support device 3, for example, the steering force rod includes a first steering rod and a second steering rod, and the transition portion where the first steering rod and the second steering rod are connected to each other forms an angle.

[0041] Furthermore, to prevent the steering booster rod from shaking and ensure stable output, one end of the fixed platform is fixedly connected to the fixed base 1, while the other end is provided with a pair of side-by-side raised platforms with locking holes. One end of a first locking bolt passes through the locking hole of the double-raised platform on one side, the first rotating hole, and the locking hole of the double-raised platform on the other side, and is then tightened with a nut. The input end of the steering booster rod is connected to the telescopic end of the cylinder assembly 5 via a second locking bolt.

[0042] Specifically, in order to facilitate installation and disassembly, for example, the connecting assembly 7 includes a connecting rod, a first connecting block, a second connecting block and a third connecting block. The first connecting block and the second connecting block are U-shaped components, and the third connecting block includes an integrally formed base plate and a raised plate. The raised plate is located on the side of the base plate away from the support device and is centrally arranged. The first connecting block and the second connecting block are separated at both ends of the connecting rod and are threadedly connected to the connecting rod. The distance between the first connecting block and the second connecting block is adjusted by rotating the connecting rod. The first connecting block is connected to one end of the steering boost rod by a third locking bolt, and the steering boost rod can rotate circumferentially along the third locking bolt. The second connecting block is connected to the raised plate by a fourth locking bolt. The base plate is used to be in close contact with the surface of the support device to apply push and pull forces to the support device 3. The base plate is fixedly connected to the support device 3 by bolts.

[0043] The above description is only an illustrative embodiment of the present invention. Without departing from the concept and principle of the present invention, any equivalent changes and modifications made by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. A thin-walled ellipsoidal part tightening tool, characterized in that , comprising a fixed base, a limiting device, a plurality of supporting devices and a driving device, wherein, The supporting device, the driving device and the limiting device are all located on the fixed base; in the middle of the fixed base, one end of the limiting device is connected to the fixed base, and the other end is used to fix the bottom end of the thin-walled tank; the supporting device and the driving device are arranged along the circumference of the fixed base, and the driving device is used to drive the supporting device so that one end of the supporting device moves along the radial direction of the fixed base and abuts against the inner wall of the bottom of the thin-walled tank, thereby completing the support of the bottom of the thin-walled tank.

2. The thin-walled ellipsoidal part tightening tool according to claim 1 is characterized in that The fixed base is a disc structure; the limiting device includes a limiting column, an upper locking nut and a lower locking nut. One end of the limiting column is fixedly connected to the fixed base, and the other end passes through the lower locking nut, the thin-walled tank bottom and the upper locking nut in sequence, and is screwed to the limiting column through the upper locking nut and the lower locking nut to fix the bottom end of the thin-walled tank bottom on the limiting column.

3. The thin-walled ellipsoidal part tightening tool according to claim 1 is characterized in that The outer shape of the support device is roughly trapezoidal, and the large-area end of the support device is used to support the inner wall of the bottom of the tank. The large-area end of the support device is provided with a curved surface that matches the inner wall of the bottom of the tank.

4. The thin-walled ellipsoidal part tightening tool according to claim 1 is characterized in that The driving device includes an air supply device, a cylinder assembly, a steering force assembly and a connecting assembly, wherein, The air supply device is connected to one end of the cylinder assembly, the telescopic end of the cylinder assembly is connected to one end of the steering force assembly, the other end of the steering force assembly is connected to one end of the connecting assembly, and the other end of the connecting assembly is used to connect to the supporting device.

5. The thin-walled ellipsoidal part tightening tool according to claim 4 is characterized in that The gas supply device includes at least one gas cylinder, a first delivery pipe, a second delivery pipe and an air supply ring; the gas cylinder is fixed on the limiting device, the output end of the gas cylinder is connected to the input end of the first delivery pipe, the output end of the first delivery pipe is connected to the input end of the air supply ring, the output end of the air supply ring is connected to the input end of the second delivery pipe, and the output end of the second delivery pipe is connected to one end of the cylinder assembly.

6. The thin-walled ellipsoidal part supporting fixture according to claim 5 is characterized in that , the telescopic direction of the cylinder assembly is parallel to the axis of the fixed base.

7. The thin-walled ellipsoidal part tightening tool according to claim 4 is characterized in that The steering force assembly includes a steering force rod, a first locking bolt and a fixed platform. The middle part of the steering force rod is provided with a first rotation hole and the two ends are provided with second rotation holes; the first locking bolt fixes the steering force rod to the end of the fixed platform away from the fixed base, and the steering force rod can rotate circumferentially along the first locking bolt; the two ends of the steering force rod are respectively connected to the cylinder assembly and the connecting assembly through the second locking bolt and the third locking bolt.

8. The thin-walled ellipsoidal part tightening tool according to claim 7 is characterized in that The steering force rod includes a first steering rod and a second steering rod, and the transition part where the first steering rod and the second steering rod are connected to each other forms an angle.

9. The thin-walled ellipsoidal part tightening tool according to claim 7, characterized in that One end of the fixed platform is fixedly connected to the fixed base, and the other end is provided with a double raised platform arranged side by side, and a locking hole is provided on the double raised platform; one end of the first locking bolt passes through the locking hole of the double raised platform on one side, the first rotating hole and the locking hole of the double raised platform on the other side in sequence, and is then locked by a nut, and the input end of the steering booster rod is connected to the telescopic end of the cylinder assembly through the second locking bolt.

10. The thin-walled ellipsoidal part tightening tool according to claim 8, characterized in that , the connecting assembly includes a connecting rod, a first connecting block, a second connecting block and a third connecting block; the first connecting block and the second connecting block are U-shaped components, the third connecting block includes an integrally formed bottom plate and a raised plate, the raised plate is located on the side of the bottom plate away from the support device and is centrally arranged, the first connecting block and the second connecting block are separated at both ends of the connecting rod and are threadedly connected to the connecting rod, and the distance between the first connecting block and the second connecting block is adjusted by rotating the connecting rod; the first connecting block is connected to one end of the steering force rod by a third locking bolt and the steering force rod can rotate circumferentially along the third locking bolt, the second connecting block is connected to the raised plate by a fourth locking bolt, the bottom plate is tightly attached to the surface of the support device and is fixedly connected to the support device by bolts.

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