Back protection mechanism for welding scalloped segment of stainless steel rocket storage tank

Abstract

The utility model provides a back protection mechanism for welding a scalloped segment section of a stainless steel rocket tank, which comprises a scalloped segment back protection mechanism and a lifting shaft, the lifting shaft is arranged in the middle of a space enclosed by a scalloped segment inner tube, and the scalloped segment back protection mechanism is sleeved on the lifting shaft; an arc-shaped back protection groove matched with a longitudinal seam of the scalloped segment is formed in the position, close to the scalloped segment inner tube, of the scalloped segment back protection mechanism, and the arc-shaped back protection groove is used for being filled with shielding gas; the scalloped segment back protection mechanism can rotate around the lifting shaft so as to provide shielding gas for welding of each scalloped segment longitudinal seam. The back protection mechanism can provide protection gas for each scalloped segment longitudinal seam, and the performance of scalloped segment welding seams is improved.

Description

Technical Field

[0001] The utility model relates to the field of rocket tanks, in particular to a back protection mechanism for welding melon-shaped segments of stainless steel rocket tanks. Background Art

[0002] In the existing large-diameter stainless steel rocket tank manufacturing process, there are several major difficulties in manufacturing the melon slices used for the stainless steel head. First, the secondary clamping is difficult to control: the melon slice itself is a stainless steel plate with an elliptical arc shape. The plate is thin and has low rigidity, which leads to reduced welding accuracy. Second, the dimensional accuracy of the single melon slice and the dimensional accuracy of the melon slice butt welding assembly are high: the stainless steel head is large in size, and the melon slice plate is very thin, so the shape retention of the melon slice is high. Third, the manufacturing process is complicated. Existing stainless steel melon slice segment welding equipment usually uses a large melon slice inner tube to support the inner side of the melon slice, and controls the shape and size of the melon slice through the melon slice inner tube.

[0003] In order to improve the performance of melon-shaped welds, it is particularly important to design a back protection mechanism for welding the melon-shaped segments of stainless steel rocket tanks. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a back protection mechanism for welding the melon-shaped segments of a stainless steel rocket tank.

[0005] The utility model provides a back protection mechanism for welding melon-shaped segments of a stainless steel rocket tank, comprising: a melon-shaped segment back protection mechanism and a lifting shaft, wherein the lifting shaft is arranged in the middle of a space surrounded by an inner tube of the melon segment, and the melon-shaped segment back protection mechanism is sleeved on the lifting shaft; near the inner tube of the melon segment, the melon-shaped segment back protection mechanism is provided with an arcuate back protection groove adapted to the longitudinal seam of the melon segment, and the arcuate back protection groove is used to fill with protective gas; the melon-shaped segment back protection mechanism can rotate around the lifting shaft to provide protective gas for the welding of each longitudinal seam of the melon segment.

[0006] According to one embodiment of the present invention, the melon slice back protection mechanism includes a melon slice back protection sleeve, which is rotatably sleeved on the lifting shaft; the melon slice back protection sleeve is provided with a melon slice welding back protection bracket, and the arc-shaped back protection groove is provided on the melon slice welding back protection bracket.

[0007] According to one embodiment of the present invention, the melon slice back protection mechanism can move along the axial direction of the lifting shaft.

[0008] According to one embodiment of the present invention, the melon slice back protection sleeve is provided with a melon slice back protection base, and the melon slice welding back protection bracket is provided on the melon slice back protection base; along the radial direction of the melon slice inner tube, the melon slice welding back protection bracket can slide relative to the melon slice back protection base, so that the melon slice welding back protection bracket drives the arc-shaped back protection groove close to or away from the melon slice inner tube.

[0009] According to one embodiment of the present invention, along the axial direction of the lifting shaft, the melon slice back protection base can slide relative to the melon slice back protection sleeve to make room for the melon slice back protection mechanism to rotate in the space surrounded by the melon slice inner tube.

[0010] According to one embodiment of the present invention, a linear guide rail is provided on the upper end surface of the melon slice back protection base along the radial direction of the melon slice inner tube, and a linear guide groove compatible with the linear guide rail is provided on the lower end surface of the melon slice welded back protection bracket; the linear guide groove is sleeved on the linear guide rail to enable the melon slice welded back protection bracket to slide relative to the melon slice back protection base.

[0011] According to one embodiment of the present invention, the melon slice back protection mechanism also includes a melon slice back protection outer cylindrical meshing gear fixedly mounted on the lifting shaft, and the melon slice back protection sleeve is engaged with the melon slice back protection outer cylindrical meshing gear to enable the melon slice back protection sleeve to rotate relative to the lifting shaft.

[0012] According to one embodiment of the present invention, the melon slice back protection sleeve includes a melon slice back protection sleeve ring and an external cylindrical gear of the sleeve; the melon slice back protection sleeve ring is sleeved on the lifting shaft and is rotatable relative to the lifting shaft and the melon slice back protection external cylindrical meshing gear; the external cylindrical gear of the sleeve is arranged on the outer side surface of the melon slice back protection sleeve ring, and the external cylindrical gear of the sleeve is meshed with the melon slice back protection external cylindrical meshing gear.

[0013] According to one embodiment of the present invention, the melon slice back protection mechanism is provided with a melon slice back protection motor, and the melon slice back protection motor is used to drive the melon slice back protection sleeve to rotate around the lifting shaft relative to the melon slice back protection outer cylindrical meshing gear.

[0014] According to one embodiment of the present invention, the melon slice back protection sleeve is provided with a melon slice cutting back protection bracket, and the melon slice cutting back protection bracket is spaced apart from the melon slice welding back protection bracket; near the melon slice inner tube, the melon slice cutting back protection bracket is provided with an arc-shaped protective groove adapted to the melon slice longitudinal seam, and the arc-shaped protective groove is used to prevent cutting slag from falling into the interior of the welding equipment.

[0015] According to the utility model, a back protection mechanism for welding melon-shaped segments of stainless steel rocket tanks is provided, and by providing a rotatable melon-shaped segment back protection mechanism, protective gas can be provided for each melon-shaped segment longitudinal seam, thereby improving the performance of the melon-shaped segment weld.

[0016] 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

[0017] 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 principle of the utility model.

[0018] Figure 1 This is a perspective view of a welding tool for welding the melon-shaped segments of a stainless steel rocket tank according to one embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional diagram of a back protection mechanism for welding a melon-shaped segment of a stainless steel rocket tank according to one embodiment of the present invention;

[0020] Figure 3 This is a three-dimensional diagram of a back protection mechanism for welding a melon-shaped segment of a stainless steel rocket tank according to one embodiment of the present invention;

[0021] Figure 4 yes Figure 3 Enlarged view of A.

[0022] Description of reference numerals:

[0023] 1-1 Melon slice inner tube; 1-13 Melon slice back protection mechanism; 1-16 Lifting shaft; 1-13-1 Melon slice back protection outer cylindrical meshing gear; 1-13-2 Melon slice back protection base; 1-13-3 Melon slice welding back protection bracket; 1-13-4 Melon slice cutting back protection bracket; 1-13-5 Melon slice back protection sleeve; 1-13-3-1 Arc-shaped back protection groove; 1-13-4-1 Arc-shaped protection groove; 1-13-5-1 Melon slice back protection sleeve ring; 1-13-5-2 Sleeve external cylindrical gear. DETAILED DESCRIPTION

[0024] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the dimensions of some structural components or areas in the drawings may be enlarged for other structural components or areas to facilitate understanding of the embodiments of the present invention.

[0025] The directional words that appear in the following description refer to the directions shown in the drawings and do not limit the specific structure of the embodiments of the present invention. In the description of the present invention, it should be noted that, unless otherwise specified, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0026] In addition, the terms "include", "comprising", "having" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component comprising a series of elements includes not only those elements, but also other mechanical elements not explicitly listed or inherent in the structure or component. In the absence of more limitations, the elements defined by the sentence "comprising..." do not exclude the presence of other identical elements in the article or device comprising the elements.

[0027] Spatially relative terms such as "below," "beneath," "under," "low," "above," "on," "high," and the like are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to encompass different orientations of the device in addition to those shown in the figures. Additionally, for example, "one element is above / below another element" may indicate that the two elements are in direct contact, or may indicate that there are other elements between the two elements. Furthermore, terms such as "first," "second," and the like are also used to describe various elements, regions, portions, and the like, and do not specifically refer to an order or sequence, and should not be considered limiting. Similar terms are used throughout the description to indicate similar elements.

[0028] In the following description of the present invention, in certain scenarios, only the terms "rocket", "carrier rocket", "spacecraft", "space carrier" or "missile" may be used. This is only for the convenience of description, and its connotation is not limited to the specific words used. Generally speaking, the rockets of the present invention include carrier rockets or space carriers used to carry satellites, spacecraft or other probes, as well as various types of missiles, rockets and other weapons used to carry military payloads, as well as similar products that can send payloads into the air. When interpreting the above-mentioned specific terms, those skilled in the art shall not limit the rocket to only one of the carrier rockets or missiles based on the specific words used to describe the scenario, thereby narrowing the scope of protection of the present invention.

[0029] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0030] Figure 1 This is a perspective view of a welding tool for welding the melon-shaped segments of a stainless steel rocket tank according to one embodiment of the present invention; Figure 2 This is a three-dimensional diagram of a back protection mechanism for welding a melon-shaped segment of a stainless steel rocket tank according to one embodiment of the present invention; Figure 3 This is a three-dimensional diagram of a back protection mechanism for welding a melon-shaped segment of a stainless steel rocket tank according to one embodiment of the present invention; Figure 4 yes Figure 3 Enlarged view of A.

[0031] like Figure 1 、 2 As shown in Figure 3, the utility model provides a back protection mechanism for welding the melon segment of a stainless steel rocket tank, comprising: a melon segment back protection mechanism 1-13 and a lifting shaft 1-16. The lifting shaft 1-16 is arranged in the middle of the space surrounded by the melon segment inner tube 1-1, and the melon segment back protection mechanism 1-13 is sleeved on the lifting shaft 1-16. Near the melon segment inner tube 1-1, the melon segment back protection mechanism 1-13 is provided with an arc-shaped back protection groove 1-13-3-1 adapted to the longitudinal seam of the melon segment, and the arc-shaped back protection groove 1-13-3-1 is used to fill with protective gas. The melon segment back protection mechanism 1-13 can rotate around the lifting shaft 1-16 to provide protective gas for the welding of each melon segment longitudinal seam.

[0032] The back protection mechanism of this embodiment, by setting a rotatable melon slice back protection mechanism 1-13, can provide protective gas when welding each melon slice longitudinal seam to prevent the weld from oxidation, thereby improving the performance of the melon slice weld.

[0033] According to one embodiment of the present invention, the melon slice back protection mechanism 1-13 includes a melon slice back protection sleeve 1-13-5, which is rotatably mounted on a lifting shaft 1-16. The melon slice back protection sleeve 1-13-5 is provided with a melon slice welded back protection bracket 1-13-3, and an arcuate back protection groove 1-13-3-1 is provided in the melon slice welded back protection bracket 1-13-3.

[0034] In this embodiment, when the longitudinal seam of the melon slice is welded, the melon slice back protection mechanism 1-13 rotates relative to the lifting shaft 1-16 until the arc-shaped back protection groove 1-13-3-1 rotates to the longitudinal seam of the melon slice to be welded, and provides welding protection gas.

[0035] According to one embodiment of the present invention, the melon peel back protection mechanism 1-13 can be moved along the axial direction of the lifting shaft 1-16.

[0036] In this embodiment, for example, along the axial direction of the lifting shaft 1-16, the melon slice back protection sleeve 1-13-5 can be moved relative to the lifting shaft 1-16 to realize the movement of the melon slice welded back protection bracket 1-13-3 and the arc-shaped back protection groove 1-13-3-1 along the axial direction of the lifting shaft 1-16, so as to make room for the melon slice back protection mechanism to rotate, so as to facilitate the melon slice back protection mechanism 1-13 to rotate in the space surrounded by the melon slice inner tube. In another embodiment, along the axial direction of the lifting shaft 1-16, the melon slice back protection sleeve 1-13-5 is relatively fixed to the lifting shaft 1-16, and the melon slice welded back protection bracket 1-13-3 and the melon slice back protection sleeve 1-13-5 are slidably arranged to enable the melon slice welded back protection bracket 1-13-3 to drive the arc-shaped back protection groove 1-13-3-1 to move along the axial direction of the lifting shaft 1-16, so as to make room for the melon slice back protection mechanism to rotate, so that the melon slice back protection mechanism 1-13 can rotate in the space surrounded by the melon slice inner tube. In another embodiment, the melon slice back protection mechanism 1-13 can be driven up and down by the lifting of the lifting shaft, or the melon slice back protection mechanism 1-13 can slide up and down relative to the lifting shaft 1-16, so as to make room for the melon slice back protection mechanism to rotate, so that the melon slice back protection mechanism 1-13 can rotate in the space surrounded by the melon slice inner tube.

[0037] According to one embodiment of the present invention, a melon slice back protection sleeve 1-13-5 is provided with a melon slice back protection base 1-13-2, and a melon slice welded back protection bracket 1-13-3 is provided on the melon slice back protection base 1-13-2. Along the radial direction of the melon slice inner tube 1-1, the melon slice welded back protection bracket 1-13-3 can slide relative to the melon slice back protection base 1-13-2, so that the melon slice welded back protection bracket 1-13-3 drives the arcuate back protection groove 1-13-3-1 toward or away from the melon slice inner tube 1-1.

[0038] The back protection mechanism of this embodiment can slide in the radial direction through the melon slice welding back protection bracket 1-13-3, and can also make space for the melon slice back protection mechanism 1-13 to rotate, so that the melon slice back protection mechanism 1-13 can rotate in the space surrounded by the melon slice inner tube to provide protective gas for each melon slice longitudinal seam welding.

[0039] According to one embodiment of the present invention, along the axial direction of the lifting shaft 1-16, the melon slice back protection base 1-13-2 can be slidably arranged relative to the melon slice back protection sleeve 1-13-5 to allow space for the melon slice back protection mechanism 1-13 to rotate in the space surrounded by the melon slice inner tube 1-1.

[0040] In this embodiment, the melon slice back protection base 1-13-2 is movably arranged along the axial direction of the melon slice back protection sleeve 1-13-5, and can drive the melon slice welding back protection bracket 1-13-3 and the arc-shaped back protection groove 1-13-3-1 to move along the axial direction of the lifting shaft 1-16, which helps the melon slice back protection mechanism 1-13 to rotate in the space surrounded by the melon slice inner tube to provide protective gas for the welding of each melon slice longitudinal seam.

[0041] According to one embodiment of the present invention, a linear guide rail is provided on the upper end surface of the melon slice back protection base 1-13-2 along the radial direction of the melon slice inner tube 1-1, and a linear guide groove is provided on the lower end surface of the melon slice welded back protection bracket 1-13-3 to match the linear guide rail. The linear guide groove is sleeved on the linear guide rail to enable the melon slice welded back protection bracket 1-13-3 to slide relative to the melon slice back protection base 1-13-2.

[0042] According to one embodiment of the present invention, the melon slice back protection mechanism 1-13 further includes a melon slice back protection outer cylindrical meshing gear 1-13-1 fixedly mounted on the lifting shaft 1-16. The melon slice back protection sleeve 1-13-5 is meshed with the melon slice back protection outer cylindrical meshing gear 1-13-1, so that the melon slice back protection sleeve 1-13-5 rotates relative to the melon slice back protection outer cylindrical meshing gear 1-13-1.

[0043] like Figure 4As shown, according to one embodiment of the present invention, the melon slice back protection sleeve 1-13-5 includes a melon slice back protection sleeve ring 1-13-5-1 and a sleeve external cylindrical gear 1-13-5-2. The melon slice back protection sleeve ring 1-13-5-1 is sleeved on the lifting shaft 1-16 and is rotatable relative to the lifting shaft 1-16 and the melon slice back protection external cylindrical meshing gear 1-13-1. The sleeve external cylindrical gear 1-13-5-2 is arranged on the outer side surface of the melon slice back protection sleeve ring 1-13-5-1, and the sleeve external cylindrical gear 1-13-5-2 is meshed with the melon slice back protection external cylindrical meshing gear 1-13-1, so that the melon slice back protection mechanism 1-13 rotates around the lifting shaft 1-16.

[0044] According to one embodiment of the present invention, the melon slice back protection mechanism 1-13 is provided with a melon slice back protection motor, which is used to drive the melon slice back protection sleeve 1-13-5 to rotate around the lifting shaft 1-16 relative to the melon slice back protection outer cylindrical meshing gear 1-13-1.

[0045] In this embodiment, for example, the melon slice back protection motor can be mounted on the melon slice back protection sleeve 1-13-5 or the melon slice back protection base 1-13-2. The melon slice back protection motor drives the outer cylindrical gear 1-13-5-2 of the melon slice back protection sleeve ring 1-13-5-1 to rotate, thereby causing the melon slice back protection outer cylindrical meshing gear 1-13-1 and the lifting shaft 1-16 to rotate relative to the melon slice back protection mechanism 1-13.

[0046] According to one embodiment of the present invention, a melon slice back protection sleeve 1-13-5 is provided with a melon slice cutting back protection bracket 1-13-4, which is spaced apart from a melon slice welding back protection bracket 1-13-3. Near the melon slice inner tube 1-1, the melon slice cutting back protection bracket 1-13-4 is provided with an arc-shaped protective groove 1-13-4-1 that matches the longitudinal seam of the melon slice. The arc-shaped protective groove 1-13-4-1 is used to prevent cutting slag from falling into the welding equipment.

[0047] In this embodiment, for example, the melon slice cutting back protection bracket 1-13-4 and the melon slice welding back protection bracket 1-13-3 can be symmetrically or approximately symmetrically arranged. The structures of the melon slice cutting back protection bracket 1-13-4 and the melon slice welding back protection bracket 1-13-3 can be the same or approximately the same. For example, the melon slice back protection sleeve 1-13-5 is provided with two melon slice back protection bases 1-13-2. For example, the two melon slice back protection bases 1-13-2 are spaced and symmetrically arranged on both sides of the melon slice back protection sleeve 1-13-5, and the two melon slice back protection bases 1-13-2 are respectively provided with the melon slice welding back protection bracket 1-13-3 and the melon slice cutting back protection bracket 1-13-4. In the radial direction, the melon slice welding back protection bracket 1-13-3 and the melon slice cutting back protection bracket 1-13-4 can both be slidably arranged relative to the melon slice back protection base 1-13-2. For example, the arc-shaped protection groove 1-13-4-1 can be set to be 30 mm wide and 30 to 50 mm deep. Before cutting the longitudinal seam of the melon slice, the melon slice back protection mechanism 1-13 rotates relative to the lifting shaft 1-16 until the arc-shaped protection groove 1-13-4-1 rotates to the longitudinal seam of the melon slice to be welded, thereby preventing cutting slag from falling into the welding equipment.

[0048] The above embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A back protection tool for welding the melon-shaped segments of a stainless steel rocket tank, characterized in that: include: The melon slice back protection mechanism and the lifting shaft are arranged in the middle of the space surrounded by the melon slice inner tube, and the melon slice back protection mechanism is sleeved on the lifting shaft; near the melon slice inner tube, the melon slice back protection mechanism is provided with an arc-shaped back protection groove adapted to the melon slice longitudinal seam, and the arc-shaped back protection groove is used to fill with protective gas; the melon slice back protection mechanism can rotate around the lifting shaft to provide protective gas for the welding of each melon slice longitudinal seam.

2. The back protection tooling according to claim 1, characterized in that: The melon slice back protection mechanism includes a melon slice back protection sleeve, which is rotatably sleeved on the lifting shaft; the melon slice back protection sleeve is provided with a melon slice welding back protection bracket, and the arc-shaped back protection groove is provided on the melon slice welding back protection bracket.

3. The back protection tooling according to claim 1, characterized in that: The melon slice back protection mechanism can move along the axial direction of the lifting shaft.

4. The back protection tooling according to claim 2, characterized in that: The melon slice back protection sleeve is provided with a melon slice back protection base, and the melon slice welding back protection bracket is provided on the melon slice back protection base; along the radial direction of the melon slice inner tube, the melon slice welding back protection bracket can slide relative to the melon slice back protection base, so that the melon slice welding back protection bracket drives the arc-shaped back protection groove to approach or move away from the melon slice inner tube.

5. The back protection tooling according to claim 4, characterized in that: Along the axial direction of the lifting shaft, the melon segment back protection base can slide relative to the melon segment back protection sleeve to make room for the melon segment back protection mechanism to rotate in the space surrounded by the melon segment inner tube.

6. The back protection tooling according to claim 4, characterized in that: Along the radial direction, a linear guide rail is provided on the upper end surface of the melon slice back protection base, and a linear guide groove adapted to the linear guide rail is provided on the lower end surface of the melon slice welded back protection bracket; the linear guide groove is sleeved on the linear guide rail to enable the melon slice welded back protection bracket to slide relative to the melon slice back protection base.

7. The back protection tooling according to claim 2, characterized in that: The melon slice back protection mechanism also includes a melon slice back protection outer cylindrical meshing gear fixedly mounted on the lifting shaft, and the melon slice back protection sleeve is meshed with the melon slice back protection outer cylindrical meshing gear to enable the melon slice back protection sleeve to rotate relative to the lifting shaft.

8. The back protection tooling according to claim 7, characterized in that: The melon slice back protection sleeve includes a melon slice back protection sleeve ring and an external cylindrical gear of the sleeve; the melon slice back protection sleeve ring is sleeved on the lifting shaft and can rotate relative to the lifting shaft and the melon slice back protection external cylindrical meshing gear; the external cylindrical gear of the sleeve is arranged on the outer side surface of the melon slice back protection sleeve ring, and the external cylindrical gear of the sleeve is meshed with the melon slice back protection external cylindrical meshing gear.

9. The back protection tooling according to claim 7, characterized in that: The melon slice back protection mechanism is provided with a melon slice back protection motor, and the melon slice back protection motor is used to drive the melon slice back protection sleeve to rotate around the lifting shaft relative to the melon slice back protection outer cylindrical meshing gear.

10. The back protection tooling according to claim 2, characterized in that: The melon slice back protection sleeve is provided with a melon slice cutting back protection bracket, and the melon slice cutting back protection bracket is spaced apart from the melon slice welding back protection bracket; near the melon slice inner tube, the melon slice cutting back protection bracket is provided with an arc-shaped protection groove adapted to the melon slice longitudinal seam, and the arc-shaped protection groove is used to prevent cutting slag from falling into the interior of the welding equipment.

Images