Damping pressing device applicable to the bottom welding of rocket tanks

Abstract

The present invention provides a damping pressing device applicable to the welding of the bottom of a rocket tank, comprising: a workpiece 2, a mechanical pressing strip 3, a damping member, and an elastic backing plate 5; both ends of the mechanical pressing strip 3 are fixedly connected to a workbench; the damping members are uniformly arranged and installed on the mechanical pressing strip 3; the center lines of the elastic backing plates 5 are aligned with the axes of the damping members and are uniformly arranged and installed on the mechanical pressing strip 3; the other ends of the elastic backing plates 5 are in a free state; the damping members press down the free ends of the elastic backing plates 5, so that the free ends of the elastic backing plates 5 are pressed against the workpiece 2. The present invention can achieve the pressing of spherical-bottom and conical-bottom workpieces with any large curvature radius, without being limited by the form of the bottom of the rocket tank, and the damping screws therein can adjust themselves in real time to compensate for the deformation amount of the workpiece, so as to meet the requirements of high quality of the weld unit.

Description

Technical Field

[0001] The present invention relates to the technical field of the bottom welding of rocket tanks, and specifically, to a damping pressing device applicable to the bottom welding of rocket tanks. Background Art

[0002] At present, the welding process method of friction stir welding is mostly adopted in the bottom welding system of rocket tanks. When welding the longitudinal seams of the spherical bottom or conical bottom workpieces of the rocket tank bottom, it is necessary to press the workpieces. Since the upsetting force and the forward resistance of friction stir welding are very large, the workpieces will be deformed during welding, and then the gap between the pressing device and the workpieces will cause loosening. Generally, in this case, the loosening will be eliminated by manually readjusting the pressing device repeatedly. However, this method will greatly increase the labor intensity of workers and reduce the production efficiency. Since it is manually adjusted in real time, there will be potential safety hazards, not only with low efficiency but also possibly endangering the personal safety of workers. More importantly, it will affect the welding quality of the weld unit. Therefore, it is very necessary to invent a damping pressing device for the bottom welding system of rocket tanks.

[0003] Patent document CN109848889A discloses a workpiece pressing device based on damping shock absorption, including: a bottom mounting plate body, an upper support plate body, a plurality of damping shock absorbers, a first rectangular support rod, a second rectangular support rod, a first support plate body, a second support plate body, a positioning plate body, a first limit positioning seat, a second limit positioning seat, an ear support seat, a driving regulator, a rocker, a stepped rod body, a triangular rotating plate, a short connecting rod, a long connecting rod, a first folded pressing body, a first channel-shaped part, a second folded pressing body connected, and a second channel-shaped part; elastic pressing pieces are installed on the pressing end faces of the first folded pressing body and the second folded pressing body through fasteners. Summary of the Invention

[0004] Aiming at the defects in the prior art, the purpose of the present invention is to provide a damping pressing device applicable to the bottom welding of rocket tanks.

[0005] According to a damping pressing device applicable to the bottom welding of rocket tanks provided by the present invention, it includes: a workpiece 2, a mechanical pressing strip 3, a damping member, and an elastic cushion plate 5; both ends of the mechanical pressing strip 3 are fixedly connected to the workbench; the damping members are uniformly arranged and installed on the mechanical pressing strip 3; the center lines of the elastic cushion plates 5 are aligned with the axes of the damping members and are uniformly arranged and installed on the mechanical pressing strip 3; the other ends of the elastic cushion plates 5 are in a free state; the damping members press down the free ends of the elastic cushion plates 5, so that the free ends of the elastic cushion plates 5 press on the workpiece 2.

[0006] Preferably, the damping member adopts a damping screw 4.

[0007] Preferably, the damping screw 4 includes: a third screw 41, a pressing head 42, a disc spring 43, and a wire spring 44.

[0008] The disc spring 43 is placed in the inner hole of the third screw 41. When in the pressed state, one end of the disc spring 43 abuts tightly against the contact 406 between the third screw and the disc spring, and the other end abuts tightly against the contact 403 between the disc spring and the pressing head.

[0009] Preferably, the pressing head 42 is placed in the inner hole of the third screw 41 and passes through the inner hole of the disc spring 43.

[0010] Preferably, the wire spring 44 is stuck in the arc-shaped card slot 401 of the third screw. When in the free state, the wire spring 44 blocks the pressing head 42 at the contact 404 between the wire spring and the pressing head. The third screw 41 is installed on the mechanical pressing strip 3. When normally pressed, the third screw 41 presses the workpiece 2 through the pressing end 405 of the third screw. When the welding becomes loose, the pressing head 42 presses the workpiece 2 through the pressing end 402 of the pressing head.

[0011] Preferably, the mechanical pressing strip 3 is fixed to the workbench at both ends of the first fastening screw 1.

[0012] Preferably, one end of the elastic backing plate 5 is fixedly connected to the mechanical pressing strip 3 through the second fastening screw 6.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention fills the gap in the damping pressing device for the welding system of the bottom of the rocket storage tank in China, and meets the requirements of high quality and high efficiency for the product;

[0015] 2. The present invention can realize the pressing of workpieces with spherical bottoms and conical bottoms with any large curvature radius, and is not limited by the form of the bottom of the rocket storage tank. The damping screw therein can adjust itself in real time to compensate for the deformation of the workpiece, so as to meet the requirements of high quality of the weld unit;

[0016] 3. The present invention can greatly reduce the labor intensity of workers and meet the requirement of one-time installation until welding is completed;

[0017] 4. The present invention can be popularized and applied to the welding systems of other parts of the rocket storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present invention will become more apparent:

[0019] Figure 1 It is a schematic structural diagram of the present invention.

[0020] Figure 2It is a schematic cross-sectional view of the present invention.

[0021] Figure 3 It is a schematic structural view of the damping screw in the present invention.

[0022] Figure 4 It is a schematic cross-sectional view of the damping screw in the present invention.

[0023] Figure 5 In the present invention Figure 4 is a partially enlarged schematic view.

[0024] In the figure:

[0025] 1 is the first fastening screw, and 44 is the wire spring

[0026] 2 is the workpiece, and 201 is the weld unit

[0027] 3 is the mechanical pressing strip, and 401 is the arc groove of the third screw

[0028] 4 is the damping screw, and 402 is the pressing end of the pressing head

[0029] 5 is the elastic cushion plate, and 403 is the contact position between the disc spring and the pressing head

[0030] 6 is the second fastening screw, and 404 is the contact position between the wire spring and the pressing head

[0031] 41 is the third screw, and 405 is the pressing end of the third screw

[0032] 42 is the pressing head, and 406 is the contact position between the third screw and the disc spring

[0033] 43 is the disc spring Detailed implementation manners

[0034] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all belong to the protection scope of the present invention.

[0035] As Figures 1 - 5 shown, a damping pressing device applicable to the welding of the bottom of a rocket storage tank according to the present invention includes: a workpiece 2, a mechanical pressing strip 3, a damping member, and an elastic cushion plate 5; both ends of the shown mechanical pressing strip 3 are fixedly connected to the workbench; the shown damping members are uniformly arranged and installed on the mechanical pressing strip 3; the center line of the elastic cushion plate 5 is aligned with the axis of the damping member and is uniformly arranged and installed on the mechanical pressing strip 3; the other end of the elastic cushion plate 5 is in a free state; the damping member presses down the free end of the elastic cushion plate 5, so that the free end of the elastic cushion plate 5 presses on the workpiece 2.

[0036] The object of the present invention is to provide a damping pressing device for a rocket tank bottom welding system. This device can press any workpiece with a spherical bottom or a conical bottom having a large radius of curvature. When welding the bottom of a rocket tank, if the workpiece deforms and becomes loose, the damping screw adjusts itself to compensate for the deformation of the workpiece, ensuring that the workpiece is always in a pressed state, guaranteeing a firm, high-quality, and efficient welding operation of the welding equipment on the workpiece, and further improving the welding quality and efficiency of the rocket tank bottom.

[0037] Preferably, the damping member adopts a damping screw 4.

[0038] Preferably, the damping screw 4 includes: a third screw 41, a pressing head 42, a disc spring 43, and a wire spring 44; the disc spring 43 is placed in the inner hole of the third screw 41. When in the pressed state, one end of the disc spring 43 is closely attached to the contact point 406 between the third screw and the disc spring, and the other end is closely attached to the contact point 403 between the disc spring and the pressing head.

[0039] Preferably, the pressing head 42 is placed in the inner hole of the third screw 41 and passes through the inner hole of the disc spring 43.

[0040] Preferably, the wire spring 44 is stuck in the circular arc card slot 401 of the third screw. When in the free state, the wire spring 44 blocks the pressing head 42 at the contact point 404 between the wire spring and the pressing head. The third screw 41 is installed on the mechanical pressing strip 3. When normally pressing, the third screw 41 presses the workpiece 2 through the pressing end 405 of the third screw. When welding becomes loose, the pressing head 42 presses the workpiece 2 through the pressing end 402 of the pressing head.

[0041] Preferably, the mechanical pressing strip 3 is fixed to the workbench at both ends through the first fastening screw 1.

[0042] Preferably, one end of the elastic cushion plate 5 is fixedly connected to the mechanical pressing strip 3 through the second fastening screw 6.

[0043] Specifically, in one embodiment, as Figure 1 、 Figure 2 shown, a damping pressing device for a rocket tank bottom welding system includes a first fastening screw 1, a workpiece 2, a mechanical pressing strip 3, a damping screw 4, an elastic cushion plate 5, and a second fastening screw 6. The mechanical pressing strip 3 is fixed to the workbench at both ends through the first fastening screw 1. The damping screws 4 are evenly arranged and installed on the mechanical pressing strip 3. The center line of the elastic cushion plate 5 is aligned with the axis of the damping screw 4 and is evenly arranged and installed on the mechanical pressing strip 3. One end of the elastic cushion plate 5 is fixed to the mechanical pressing strip 3 through the second fastening screw 6, and the other end is in a free state. The damping screw 4 presses down the free end of the elastic cushion plate 5, so that the free end of the elastic cushion plate 5 presses on the workpiece 2.

[0044] When normally tightened, turning the damping screw 4 downwards causes the free end of the elastic cushion plate 5 to deform until it closely adheres to the workpiece 2. Continue to turn the damping screw 4 until the specified torque is reached, and then stop turning the damping screw 4. At this time, the damping screw 4 presses the workpiece 2 through the third screw pressing end 405 of the third screw 41;

[0045] As Figure 3 shown in FIG. 4, the damping screw 4 includes a third screw 41, a pressing head 42, a disc spring 43, and a wire spring 44. The disc spring 43 is placed in the inner hole of the third screw 41. When in the tightened state, one end of the disc spring 43 closely adheres to the contact 406 between the third screw and the disc spring, and the other end closely adheres to the contact 403 between the disc spring and the pressing head. The pressing head 42 is placed in the inner hole of the third screw 41 and passes through the inner hole of the disc spring 43. The wire spring 44 is stuck in the circular arc card slot 401 of the third screw. When in the free state, the wire spring 44 blocks the pressing head 42 at the contact 404 between the wire spring and the pressing head. The third screw 41 is installed on the mechanical press strip 3. When normally tightened, the third screw 41 presses the workpiece 2 through the third screw pressing end 405. When the welding becomes loose, the pressing head 42 presses the workpiece 2 through the pressing head pressing end 402.

[0046] When the welding becomes loose, the disc spring 43 offsets the gap generated during welding of the workpiece through its own deformation, and the disc spring 43 pushes the pressing head 42 to displace until the workpiece 2 is pressed;

[0047] The present invention can achieve the pressing of spherical-bottom and conical-bottom workpieces with any large radius of curvature, without being limited by the form of the bottom of the rocket storage tank. The damping screw therein can adjust itself in real time to compensate for the deformation of the workpiece, so as to meet the requirements of high quality of the weld unit.

[0048] The present invention fills the gap in the damping pressing device for the bottom welding system of rocket storage tanks in China, and realizes the requirements of high quality and high efficiency for products; the present invention can achieve the pressing of spherical-bottom and conical-bottom workpieces with any large radius of curvature, without being limited by the form of the bottom of the rocket storage tank. The damping screw therein can adjust itself in real time to compensate for the deformation of the workpiece, so as to meet the requirements of high quality of the weld unit; the present invention can greatly reduce the labor intensity of workers and can meet the requirements from one-time installation until welding is completed; the present invention can be popularized and applied to the welding systems of other parts of rocket storage tanks.

[0049] In the description of the present application, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0050] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A damping pressing device applicable to the bottom welding of a rocket storage tank, characterized in that Comprising: A first fastening screw (1), a workpiece (2), a mechanical pressing strip (3), a damping member, an elastic cushion plate (5), and a second fastening screw (6); Both ends of the shown mechanical pressing strip (3) are fixedly connected to the workbench; The shown damping members are uniformly arranged and installed on the mechanical pressing strip (3); The center line of the elastic cushion plate (5) is aligned with the axis of the damping member and is uniformly arranged and installed on the mechanical pressing strip (3); The other end of the elastic cushion plate (5) is in a free state; The damping member presses down the free end of the elastic cushion plate (5) so that the free end of the elastic cushion plate (5) presses against the workpiece (2); The damping member uses a damping screw (4); The damping screw (4) includes: a third screw (41), a disc spring (43); The disc spring (43) is placed in the inner hole of the third screw (41). When in a compressed state, one end of the disc spring (43) closely abuts at the contact (406) between the third screw and the disc spring, and the other end closely abuts at the contact (403) between the disc spring and the pressing head; The damping screw (4) further includes: a pressing head (42); The pressing head (42) is placed in the inner hole of the third screw (41) and passes through the inner hole of the disc spring (43); The damping screw (4) further includes: a wire spring (44); The wire spring (44) is stuck in the circular arc card slot (401) of the third screw. When in a free state, the wire spring (44) blocks the pressing head (42) at the contact (404) between the wire spring and the pressing head. The third screw (41) is installed on the mechanical pressing strip (3). During normal pressing, the third screw (41) presses the workpiece (2) through the pressing end (405) of the third screw. When the welding becomes loose, the pressing head (42) presses the workpiece (2) through the pressing end (402) of the pressing head.

2. The damping pressing device applicable to the bottom welding of a rocket storage tank according to claim 1, characterized in that, The shown mechanical pressing strip (3) is fixed to the workbench at both ends by the first fastening screw (1).

3. The damping pressing device applicable to the bottom welding of a rocket storage tank according to claim 1 or claim 2, characterized in that, One end of the elastic cushion plate (5) is fixedly connected to the mechanical pressing strip (3) by the second fastening screw (6).

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