CN111438472A - Damping hold-down device for bottom welding of rocket tanks - Google Patents

Abstract

The present invention provides a damping and pressing device suitable for welding the bottom of a rocket tank, comprising: a workpiece 2, a mechanical bead 3, a damping member and an elastic backing plate 5; both ends of the shown mechanical bead 3 are tightly connected to the workbench The damping members shown are evenly arranged and installed on the mechanical bead 3; the centerline of the elastic pad 5 is aligned with the axis of the damping member and evenly arranged and installed on the mechanical bead 3; the other end of the elastic pad 5 is in a free state ; The damping member presses the free end of the elastic backing plate 5 downward, so that the free end of the elastic backing plate 5 is pressed on the workpiece 2 . The invention can realize the pressing of any spherical bottom and cone bottom workpieces with a large radius of curvature, and is not limited to the form of the bottom of the rocket tank. The damping screw can be adjusted in real time to compensate for the deformation of the workpiece, so as to achieve the welding seam unit. high quality requirements.

Description

Damping hold-down device for bottom welding of rocket tanks

technical field

The invention relates to the technical field of rocket tank bottom welding, in particular to a damping pressing device suitable for rocket tank bottom welding.

Background technique

At present, the welding system of rocket tank bottom in my country mostly adopts the welding process method of friction stir welding. When welding the longitudinal seam of the spherical bottom or cone bottom workpiece of the rocket tank bottom, the workpiece needs to be pressed. When the workpiece is welded, the workpiece will be deformed, and then the gap between the pressing device and the workpiece will cause loosening. Usually, when this happens, the loosening will be eliminated by manually re-adjusting the pressing device repeatedly, but this method will greatly Increasing the labor intensity of workers and reducing production efficiency, due to artificial real-time adjustment, will bring potential safety hazards, not only low efficiency but also may endanger the personal safety of workers, and more importantly, affect the welding quality of the welding seam unit. my country's rocket tank bottom welding system has not used a compression device with damping, so it is necessary to invent a damping compression device for the rocket tank bottom welding system.

Patent document CN109848889A discloses a workpiece pressing device based on damping and shock absorption, comprising: a bottom mounting plate body, an upper supporting plate body, a plurality of damping shock absorbers, a first rectangular support rod, a second rectangular support rod, a first Support plate body, second support plate body, positioning plate body, first limit positioning seat, second limit positioning seat, ear support seat, drive adjuster, rocker, stepped rod body, triangular rotating plate, short connection The rod, the long connecting rod, the first folding-shaped pressing body, the first groove-shaped piece, the second folding-shaped pressing body are connected, and the second groove-shaped member; the first folding-shaped pressing body and the second folding-shaped pressing body are connected Elastic pressing pieces are installed on the pressing end faces of the body through fasteners.

SUMMARY OF THE INVENTION

In view of the defects in the prior art, the purpose of the present invention is to provide a damping pressing device suitable for welding the bottom of a rocket tank.

A damping pressing device suitable for welding the bottom of a rocket tank according to the present invention includes: a workpiece 2, a mechanical bead 3, a damping member and an elastic backing plate 5; the two ends of the shown mechanical bead 3 are fastened to the workbench The damping members shown are evenly arranged and installed on the mechanical bead 3; the centerline of the elastic pad 5 is aligned with the axis of the damping member and evenly arranged and installed on the mechanical bead 3; the other end of the elastic pad 5 is free state; the damping member presses the free end of the elastic backing plate 5 downward, so that the free end of the elastic backing plate 5 is pressed against the workpiece 2 .

Preferably, the damping member adopts damping screw 4 .

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

The butterfly spring 43 is placed in the inner hole of the third screw 41. In the compressed state, one end of the butterfly spring 43 is closely attached to the contact point 406 between the third screw and the butterfly spring, and the other end is tightly attached to the butterfly spring and the compression spring. Head contact 403.

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

Preferably, the wire spring 44 is clamped in the arc groove 401 of the third screw. 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, and the third screw 41 It is installed on the mechanical pressing bar 3. During normal pressing, the third screw 41 presses the workpiece 2 through the third screw pressing end 405. When the welding is loose, the pressing head 42 presses the workpiece 2 through the pressing end 402 of the pressing head.

Preferably, the shown mechanical pressure strip 3 is fixed on the workbench by both ends of the first fastening screw 1 .

Preferably, one end of the elastic backing plate 5 is fastened to the mechanical pressure strip 3 through a second fastening screw 6 .

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

1. The present invention fills the blank of the damping and pressing device used in the welding system of the bottom of the rocket tank in China, and realizes the requirements of high quality and high efficiency of the product;

2. The present invention can realize the pressing of any spherical bottom and cone bottom workpieces with large curvature radius, and is not limited to the form of the bottom of the rocket tank. The damping screw can be adjusted in real time to compensate for the deformation of the workpiece, so as to achieve welding High quality requirements of seam units;

3. The invention can greatly reduce the labor intensity, and can meet the requirements of one installation until the welding is completed;

4. The present invention can be applied to the welding system of other parts of the rocket tank.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic cross-sectional view of the present invention.

FIG. 3 is a schematic structural diagram of a damping screw in the present invention.

4 is a schematic cross-sectional view of the damping screw in the present invention.

FIG. 5 is a partial enlarged schematic view of FIG. 4 in the present invention.

In the picture:

1 is the first fastening screw 44 is the wire spring

2 is the workpiece 201 is the weld unit

3 is the mechanical pressure strip 401 is the third screw arc slot

4 is the damping screw 402 is the pressing end of the pressing head

5 is the elastic pad 403 is the contact point between the butterfly spring and the pressing head

6 is the second fastening screw 404 is the contact point between the wire spring and the pressing head

41 is the third screw 405 is the third screw pressing end

42 is the pressing head 406 is the contact point between the third screw and the butterfly spring

43 is a butterfly spring

Detailed ways

The present invention will be described in detail below with reference to specific embodiments. The following examples 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 skilled in the art, several changes and improvements can be made without departing from the inventive concept. These all belong to the protection scope of the present invention.

As shown in Figures 1 to 5, a damping pressing device suitable for welding the bottom of a rocket tank provided according to the present invention includes: a workpiece 2, a mechanical pressing bar 3, a damping member and an elastic backing plate 5; The two ends of 3 are tightly connected with the worktable; the damping members shown are evenly arranged and installed on the mechanical pressing bar 3; the center line of the elastic pad 5 is aligned with the axis of the damping member and evenly arranged and installed on the mechanical pressing bar 3; The other end of the elastic backing plate 5 is in a free state; the damping member presses the free end of the elastic backing plate 5 downward, so that the free end of the elastic backing plate 5 is pressed against the workpiece 2 .

The purpose of the present invention is to provide a damping and pressing device for a bottom welding system of a rocket tank. The device can realize the pressing of any spherical bottom and cone bottom workpieces with large curvature radius. When the bottom of the rocket tank is welded, the workpiece is deformed and loosened. The amount of deformation of the workpiece is compensated by the self-adjustment of the damping screw to ensure that the workpiece is always in a pressed state. The firm, high-quality and high-efficiency welding of the workpiece by the welding equipment further improves the welding quality and efficiency of the bottom of the rocket tank.

Preferably, the damping member adopts damping screw 4 .

Preferably, the damping screw 4 includes: a third screw 41, a pressing head 42, a butterfly spring 43 and a wire spring 44; the butterfly spring 43 is placed in the inner hole of the third screw 41, and in the pressing state, the butterfly spring 43 is placed in the inner hole of the third screw 41. One end of the shape spring 43 is in close contact with the contact point 406 between the third screw and the butterfly spring, and the other end is in close contact with the contact point 403 between the butterfly spring and the pressing head.

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

Preferably, the wire spring 44 is clamped in the arc groove 401 of the third screw. 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, and the third screw 41 It is installed on the mechanical pressing bar 3. During normal pressing, the third screw 41 presses the workpiece 2 through the third screw pressing end 405. When the welding is loose, the pressing head 42 presses the workpiece 2 through the pressing end 402 of the pressing head.

Preferably, the shown mechanical pressure strip 3 is fixed on the workbench by both ends of the first fastening screw 1 .

Preferably, one end of the elastic backing plate 5 is fastened to the mechanical pressure strip 3 through a second fastening screw 6 .

Specifically, in one embodiment, as shown in Figures 1 and 2, a damping and pressing device for a bottom welding system of a rocket tank includes a first fastening screw 1, a workpiece 2, a mechanical pressing strip 3, a damping Screw 4, elastic backing plate 5, second fastening screw 6, wherein the mechanical pressure strip 3 is fixed on the worktable by the two ends of the first fastening screw 1, the damping screw 4 is evenly arranged and installed on the mechanical pressure strip 3, and the elastic backing plate 5. The center line and the axis of the damping screw 4 are evenly arranged and installed on the mechanical pressing bar 3. One end of the elastic pad 5 is fixed on the mechanical pressing bar 3 by the second fastening screw 6, and the other end is in a free state. The damping screw 4 is pressed down. Tighten the free end of the elastic backing plate 5 so that the free end of the elastic backing plate 5 is pressed against the workpiece 2 .

During normal pressing, screw down the damping screw 4 to cause the free end of the elastic backing plate 5 to deform until it is close to the workpiece 2. Continue to tighten the damping screw 4 until the specified torque is reached, stop screwing the damping screw 4, at this time the damping screw 4 passes through the first The third screw pressing end 405 of the three screws 41 presses the workpiece 2;

As shown in FIGS. 3 and 4 , the damping screw 4 includes a third screw 41 , a pressing head 42 , a butterfly spring 43 , and a wire spring 44 , wherein the butterfly spring 43 is placed in the inner hole of the third screw 41 , and the compressed state is At this time, one end of the butterfly spring 43 is close to the contact point 406 between the third screw and the butterfly spring, and the other end is close to the contact point 403 between the butterfly spring and the pressing head, and the pressing head 42 is placed in the third screw 41. hole and pass through the inner hole of the butterfly spring 43, the wire spring 44 is stuck in the third screw arc slot 401, and 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 pressure bar 3. During normal pressing, the third screw 41 presses the workpiece 2 through the third screw pressing end 405. When the welding is loose, the pressing head 42 is pressed by the pressing head. The end 402 is pressed against the workpiece 2 .

When the welding is loose, the butterfly spring 43 offsets the gap generated when welding the workpiece through its own deformation, and the butterfly spring 43 pushes the pressing head 42 to displace until the workpiece 2 is pressed;

The invention can realize the pressing of any spherical bottom and cone bottom workpieces with a large radius of curvature, and is not limited to the form of the bottom of the rocket tank. The damping screw can be adjusted in real time to compensate for the deformation of the workpiece, so as to achieve the welding seam unit. high quality requirements.

The invention fills the blank of the damping and pressing device used in the welding system of the bottom of the rocket tank in China, and realizes the requirements of high quality and high efficiency of the product; the invention can realize the workpiece with any large curvature radius of spherical bottom and cone bottom. The compression of the welding seam is not limited to the form of the bottom of the rocket tank, and the damping screw can be adjusted in real time to compensate for the deformation of the workpiece, so as to meet the high quality requirements of the welding seam unit; the invention can greatly reduce the labor intensity, and can achieve The requirement of one-time installation until the welding is completed; the invention can be applied to the welding system of other parts of the rocket tank.

In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above-mentioned 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 essential content of the present invention. The embodiments of the present application and features in the embodiments may be combined with each other arbitrarily, provided that there is no conflict.

Claims (8)

1. a damping pressing device suitable for welding at the bottom of a rocket storage tank, is characterized in that, comprising: the first fastening screw (1), workpiece (2), mechanical bead (3), damping member, elastic backing plate ( 5) and the second fastening screw (6); Both ends of the shown mechanical bead (3) are firmly connected to the workbench; The damping members shown are evenly arranged and installed on the mechanical bead (3); The center line of the elastic backing plate (5) is evenly arranged and installed on the mechanical pressing bar (3) in alignment with the axis of the damping member; The other end of the elastic pad (5) is in a free state; The damping member presses down the free end of the elastic backing plate (5), so that the free end of the elastic backing plate (5) is pressed against the workpiece (2). 2 . The damping pressing device suitable for welding the bottom of a rocket tank according to claim 1 , wherein the damping member adopts damping screws ( 4 ). 3 . 3. The damping pressing device suitable for welding the bottom of the rocket tank according to claim 2, wherein the damping screw (4) comprises: a third screw (41), a butterfly spring (43); The butterfly spring (43) is placed in the inner hole of the third screw (41). In the pressed state, one end of the butterfly spring (43) is in close contact with the third screw and the butterfly spring (406), and the other end is tight. Stick it on the contact between the butterfly spring and the pressing head (403). 4. The damping pressing device suitable for welding the bottom of a rocket tank according to claim 3, wherein the damping screw (4) further comprises: 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 butterfly spring (43). 5. The damping pressing device suitable for welding the bottom of the rocket tank according to claim 4, is characterized in that, the damping screw (4) also comprises: a wire spring (44); The wire spring (44) is stuck in the third screw arc slot (401), and in a 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 pressure strip (3), and during normal pressing, the third screw (41) presses the workpiece (2) through the third screw pressing end (405), and when the welding is loose, The pressing head (42) presses the workpiece (2) through the pressing end (402) of the pressing head. 6. The damping pressing device suitable for welding the bottom of a rocket tank according to claim 1, characterized in that, the mechanical pressing strip (3) shown is fixed on the workbench by the two ends of the first fastening screw (1). 7. The damping pressing device suitable for welding the bottom of a rocket tank according to claim 1, wherein one end of the elastic backing plate (5) is connected to a mechanical bead (3) through the second fastening screw (6) ) tighten the connection. 8. A damping pressing device suitable for welding the bottom of a rocket tank, characterized in that it comprises: a workpiece (2), a mechanical bead (3), a damping member and an elastic backing plate (5); Both ends of the shown mechanical bead (3) are firmly connected to the workbench; The damping members shown are evenly arranged and installed on the mechanical bead (3); The center line of the elastic backing plate (5) is evenly arranged and installed on the mechanical pressing bar (3) in alignment with the axis of the damping member; The other end of the elastic pad (5) is in a free state; The damping member presses down the free end of the elastic backing plate (5), so that the free end of the elastic backing plate (5) is pressed against the workpiece (2); The damping member adopts a damping screw (4); The damping screw (4) comprises: a third screw (41), a pressing head (42), a butterfly spring (43) and a steel wire spring (44); The butterfly spring (43) is placed in the inner hole of the third screw (41). In the pressed state, one end of the butterfly spring (43) is in close contact with the third screw and the butterfly spring (406), and the other end is tight. Stick it on the contact between the butterfly spring and the pressing head (403); The pressing head (42) is placed in the inner hole of the third screw (41) and passes through the inner hole of the butterfly spring (43); The wire spring (44) is stuck in the third screw arc slot (401), and in a 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 pressure strip (3), and during normal pressing, the third screw (41) presses the workpiece (2) through the third screw pressing end (405), and when the welding is loose, The pressing head (42) presses the workpiece (2) through the pressing end (402) of the pressing head; The mechanical pressure strip (3) shown is fixed on the workbench by both ends of the first fastening screw (1); One end of the elastic backing plate (5) is fastened and connected to the mechanical pressing strip (3) through a second fastening screw (6).

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