External pressing tool applied to welding of outer stringer of stainless steel rocket storage tank cylinder section

Abstract

The utility model provides an external pressing tool applied to welding of an outer stringer of a stainless steel rocket storage tank cylinder section. The external pressing tool comprises an external pressing stand column and a stringer positioning component. The stringer positioning part is arranged on the side face of the external pressure stand column. The stringer positioning part comprises an outer pressing driving cylinder and an outer pressing block which are arranged in the radial direction of the barrel section, and the outer pressing block is connected with a telescopic rod of the outer pressing driving cylinder; the telescopic rod of the outer pressing driving cylinder stretches out and draws back to drive the outer pressing block to face or be away from the stringer on the circumferential side face of the barrel section, so that the stringer is pressed to the circumferential side face of the barrel section or released, and the barrel section and the stringer are welded. According to the external pressing tool, the stringer can be welded to the circumferential side face of the barrel section so that the barrel section and the stringer can be welded.

Description

Technical Field

[0001] This utility model relates to the field of rocket propellant tanks, specifically to an external pressure tooling for welding the outer girder of a stainless steel rocket propellant tank section. Background Technology

[0002] In existing manufacturing processes for large-diameter stainless steel rocket propellant tanks, the stringers of the stainless steel short cylinder are primarily used to provide axial support. To reduce wind resistance, the stringers are typically placed on the inner side of the short cylinder. Welding the stringers to the inner side of the short cylinder easily generates difficult-to-clean welding spatter. If the stringers are placed on the outer side of the short cylinder, there is no need for rigorous cleaning of welding spatter.

[0003] To arrange the stringers on the outer side of the short cylinder, it is particularly important to design an external pressure fixture for welding the outer stringers of the stainless steel rocket tank section. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide an external pressure tooling for welding the outer girder of a stainless steel rocket tank section.

[0005] This utility model provides an external pressure fixture for welding the outer stringers of a stainless steel rocket propellant tank section, comprising: an external pressure column and a stringer positioning component; the stringer positioning component is disposed on the side of the external pressure column; the stringer positioning component includes an external pressure driving cylinder and an external pressure block disposed along the radial direction of the tank section, the external pressure block being connected to the telescopic rod of the external pressure driving cylinder; by extending and retracting the telescopic rod of the external pressure driving cylinder, the external pressure block is driven toward or away from the stringers on the circumferential side of the tank section, so as to press the stringers to the circumferential side of the tank section or release the stringers, thereby welding the tank section and the stringers.

[0006] According to one embodiment of the present invention, it further includes an external pressure linear guide rail; the external pressure column is slidably disposed relative to the external pressure linear guide rail, so that the external pressure column drives the stringer positioning component to move closer to or away from the cylinder section.

[0007] According to one embodiment of the present invention, the stringer positioning component further includes a stringer end pressing drive cylinder and an inner positioning block arranged along the axial direction of the cylinder segment. The inner positioning block is connected to the telescopic rod of the stringer end pressing drive cylinder. By extending and retracting the telescopic rod of the stringer end pressing drive cylinder, the inner positioning block is driven toward or away from the end of the stringer, so as to press or release the stringer from the end in the length direction of the stringer.

[0008] According to one embodiment of the present invention, the outer clamping block is provided with two support arms at the end of the connecting stringer facing the stringer, and the two support arms and the end face of the connecting stringer of the outer clamping block together form a space for accommodating the stringer.

[0009] According to one embodiment of the present invention, a welding component is further included; the welding component includes a welding mechanism; the welding mechanism includes a Z-axis slider, a Y-axis slider, and a welding head; the Z-axis slider is slidably disposed with respect to the side of the external pressure column along the axial direction of the cylinder segment; the Y-axis slider is slidably disposed with respect to the Z-axis slider along the radial direction of the cylinder segment; the Z-axis slider can drive the Y-axis slider to move along the axial direction of the cylinder segment, and the welding head is disposed on the Y-axis slider so that the welding head can move along the axial or radial direction of the cylinder segment.

[0010] According to one embodiment of the present invention, the welding component further includes a welding clamping mechanism; the welding clamping mechanism includes a clamping connecting plate, an X-shaped connecting rod, and stringer clamping blocks; the clamping connecting plate is fixedly connected to the Y-axis slider, the X-shaped connecting rod is rotatably connected to the clamping connecting plate, and the two first ends of the X-shaped connecting rod are respectively connected to one of the stringer clamping blocks; by moving the two second ends of the X-shaped connecting rod closer or further away from each other, the two first ends of the X-shaped connecting rod drive the two stringer clamping blocks closer or further away from each other, so as to clamp or release the stringer from opposite sides of the stringer.

[0011] According to one embodiment of the present invention, the welding clamping mechanism further includes two connecting rod drive cylinders; the two connecting rod drive cylinders are rotatably connected to the clamping connecting plate; the telescopic rods of the two connecting rod drive cylinders are respectively rotatably connected to the two second ends of the X-shaped connecting rod; by extending and retracting the telescopic rods of the connecting rod drive cylinders, the two second ends of the X-shaped connecting rod are driven to move closer or further apart from each other.

[0012] According to one embodiment of the present invention, the welding clamping mechanism further includes a connecting rod; both ends of the connecting rod are fixedly connected to the clamping connecting plate; a rotating shaft is provided in the middle of the connecting rod, and the intersection of the X-shaped connecting rod is rotatably connected to the rotating shaft.

[0013] According to one embodiment of the present invention, the stringer clamping block is provided with at least one welding clearance groove on the end face of the stringer for clamping; the welding clearance groove is used to allow welding space for the welding head.

[0014] According to one embodiment of the present invention, the stringer clamping block is provided with a protective air chamber, an air nozzle inlet, and a protective air outlet; the air nozzle inlet and the protective air outlet are connected to the protective air chamber; the protective air outlet is provided on the end face of the stringer clamping block used to clamp the stringer; by supplying protective air from the air nozzle inlet to the protective air chamber, the protective air is blown out from the protective air outlet to supply protective air to the stringer welding part.

[0015] According to the present invention, an external pressure tooling for welding the outer stringers of stainless steel rocket tank sections can press the stringers to the circumferential side of the section through the stringer positioning component, so as to weld the section and the stringers.

[0016] It should be understood that the above general description and the following specific embodiments are merely exemplary and illustrative, and do not limit the scope of the present invention. Attached Figure Description

[0017] The accompanying drawings are part of the specification of this utility model and illustrate exemplary embodiments of the utility model. The drawings, together with the description in the specification, are used to illustrate the principles of the utility model.

[0018] Figure 1 This is a perspective view of an external pressure fixture for welding the outer girder of a stainless steel rocket propellant tank section, according to an embodiment of this utility model.

[0019] Figure 2 This is a perspective view of an external pressure fixture for welding the outer girder of a stainless steel rocket propellant tank section, according to an embodiment of this utility model.

[0020] Figure 3 This is a perspective view of the upper stringer positioning component according to an embodiment of the present utility model;

[0021] Figure 4 This is a perspective view of an embodiment of the elevator of this utility model;

[0022] Figure 5 This is a perspective view of the inner positioning block according to an embodiment of the present invention;

[0023] Figure 6 This is a top view of the inner positioning block according to an embodiment of the present invention;

[0024] Figure 7 This is a front view of the inner positioning block according to an embodiment of the present invention;

[0025] Figure 8 yes Figure 7 Cross-sectional view along the AA direction;

[0026] Figure 9 This is a bottom view of the inner positioning block according to an embodiment of the present invention;

[0027] Figure 10 This is a perspective view of the outer clamping block according to an embodiment of the present invention;

[0028] Figure 11 This is a top view of the outer clamping block according to an embodiment of the present invention;

[0029] Figure 12 yes Figure 11Cross-sectional view along the BB direction;

[0030] Figure 13 This is a front view of the outer clamping block according to an embodiment of the present invention;

[0031] Figure 14 This is a perspective view of a welding component according to an embodiment of the present invention;

[0032] Figure 15 This is a perspective view of a welding mechanism according to an embodiment of the present invention;

[0033] Figure 16 This is a perspective view of a welding clamping mechanism according to an embodiment of the present invention;

[0034] Figure 17 This is a perspective view of a stringer clamping block according to an embodiment of the present utility model;

[0035] Figure 18 This is a front view of a stringer clamping block according to an embodiment of the present invention;

[0036] Figure 19 This is a left view of a stringer clamping block according to an embodiment of the present invention;

[0037] Figure 20 yes Figure 18 Cross-sectional view along the CC direction.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1-1 External pressure base; 1-2 External pressure column; 1-3 Lifting ladder; 1-4 Upper stringer positioning component; 1-5 Lower stringer positioning component; 1-6 Welded component; 1-7 External pressure linear guide rail; 1-3-1 Lifting guide rail; 1-3-2 Passenger escalator; 1-4-1 Inner positioning block; 1-4-2 External clamping block; 1-4-3 Stringer end clamping drive cylinder; 1-4-4 Clamping connecting block; 1-4-5 External clamping drive cylinder; 1-4-1-1 Rounded chamfer; 1-4-1-2 Inner positioning locking bolt hole; 1-4-1-3 Inner positioning trapezoidal contoured inner wall; 1-4-1-4 Inner positioning quick insertion hole; 1-4-1-5 Inner positioning wedge groove; 1-4-2-1 External pressure locking bolt Holes; 1-4-2-2 External pressure quick insertion hole; 1-4-2-3 External pressure wedge groove; 1-4-2-4 External pressure contour trapezoidal inner wall; 1-6-1 Welding clamping mechanism; 1-6-2 Welding mechanism; 1-6-1-2 Clamping connecting plate; 1-6-1-3 Connecting rod drive cylinder; 1-6-1-4 X-type connecting rod; 1-6-1-6 stringer clamping block; 1-6-2-1 Z-axis slider; 1-6-2-2 Y-axis slider; 1-6-2-3 Welding connecting block; 1-6-2-4 Welding head; 1-6-1-6-1 Air nozzle inlet; 1-6-1-6-2 Welding clearance groove; 1-6-1-6-3 Protective air outlet; 1-6-1-6-4 Protective air chamber. Detailed Implementation

[0040] The features and exemplary embodiments of various aspects of this utility model will be described in detail below. To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this utility model and to exemplarily illustrate the principles of this utility model, and are not configured to limit this utility model. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the dimensions of some structural components or regions in the drawings may be enlarged for other structural components or regions to aid in the understanding of the embodiments of this utility model.

[0041] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the embodiments of this utility model. In the description of this utility model, it should be noted that, unless otherwise stated, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, the terms "comprising," "including," "having," or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure or component that includes a list of elements includes not only those elements but also other structural elements that are not expressly listed or inherent to the structure or component. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or apparatus that includes the element.

[0043] Spatial relation terms such as "below," "under," "under," "low," "above," "on," and "high" are used for descriptive convenience to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device, in addition to those different from those shown in the figure. Furthermore, phrases such as "one element on / below another element" can indicate that two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first" and "second" are also used to describe individual elements, areas, parts, etc., without specifically indicating order or sequence, and should not be considered restrictive. Similar terms are used throughout the description to represent similar elements.

[0044] In the following description of this utility model, the terms "rocket," "launch vehicle," "spacecraft," "space launch vehicle," or "missile" may be used in certain scenarios for ease of description only, and their connotations are not limited to the specific terms used. Generally, the rockets in this utility model include space launch vehicles or launch vehicles used to carry satellites, spacecraft, or other probes, as well as various missiles, rockets, and other weapons used to carry military payloads, and similar products capable of delivering payloads into the air. Those skilled in the art, when interpreting the above specific terms, should not limit the rocket to only one of launch vehicles or missiles based on the specific terms used in the description, thereby narrowing the scope of protection of this utility model.

[0045] For those skilled in the art, this invention can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the invention by illustrating examples.

[0046] Figure 1 This is a perspective view of an external pressure fixture for welding the outer girder of a stainless steel rocket propellant tank section, according to an embodiment of this utility model. Figure 2 This is a perspective view of an external pressure fixture for welding the outer girder of a stainless steel rocket propellant tank section, according to an embodiment of this utility model. Figure 3 This is a perspective view of the upper stringer positioning component according to an embodiment of the present utility model; Figure 4 This is a perspective view of an embodiment of the elevator of this utility model; Figure 5This is a perspective view of the inner positioning block according to an embodiment of the present invention; Figure 6 This is a top view of the inner positioning block according to an embodiment of the present invention; Figure 7 This is a front view of the inner positioning block according to an embodiment of the present invention; Figure 8 yes Figure 7 Cross-sectional view along the AA direction; Figure 9 This is a bottom view of the inner positioning block according to an embodiment of the present invention; Figure 10 This is a perspective view of the outer clamping block according to an embodiment of the present invention; Figure 11 This is a top view of the outer clamping block according to an embodiment of the present invention; Figure 12 yes Figure 11 Cross-sectional view along the BB direction; Figure 13 This is a front view of the outer clamping block according to an embodiment of the present invention; Figure 14 This is a perspective view of a welding component according to an embodiment of the present invention; Figure 15 This is a perspective view of a welding mechanism according to an embodiment of the present invention; Figure 16 This is a perspective view of a welding clamping mechanism according to an embodiment of the present invention; Figure 17 This is a perspective view of a stringer clamping block according to an embodiment of the present utility model; Figure 18 This is a front view of a stringer clamping block according to an embodiment of the present invention; Figure 19 This is a left view of a stringer clamping block according to an embodiment of the present invention; Figure 20 yes Figure 18 Cross-sectional view along the CC direction.

[0047] like Figure 1-3 As shown, this utility model provides an external pressure fixture for welding the outer stringers of a stainless steel rocket propellant tank section, comprising: an external pressure column 1-2 and a stringer positioning component. The stringer positioning component is disposed on the side of the external pressure column 1-2. The stringer positioning component includes an external pressure drive cylinder 1-4-5 and an external pressure block 1-4-2 disposed along the radial direction of the tank section. The external pressure block 1-4-2 is connected to the telescopic rod of the external pressure drive cylinder 1-4-5. By extending and retracting the telescopic rod of the external pressure drive cylinder 1-4-5, the external pressure block 1-4-2 is driven towards or away from the stringers on the circumferential side of the tank section, thereby pressing the stringers against the circumferential side of the tank section or releasing the stringers for welding the tank section and the stringers.

[0048] In this embodiment, for example, the external clamping drive cylinder 1-4-5 can be a pneumatic cylinder or the like. The external clamping drive cylinder 1-4-5 can be mounted on the external clamping column 1-2. This external clamping fixture, through the stringer positioning component, can clamp the stringers to the outer side of the cylinder section, thereby achieving the positioning and welding of the stringers.

[0049] like Figure 2As shown, according to one embodiment of the present invention, in addition to the external pressure column 1-2 and the stringer positioning component, the external pressure component 1 also includes an external pressure linear guide rail 1-7. The external pressure column 1-2 is slidably disposed relative to the external pressure linear guide rail 1-7, so that the external pressure column 1-2 drives the stringer positioning component to move closer to or away from the cylinder section.

[0050] In this embodiment, the external pressure linear guides 1-7 can be arranged along the radial direction of the cylinder section.

[0051] Furthermore, the external pressure component 1 also includes an external pressure base 1-1. An external pressure linear guide 1-7 can be disposed on the external pressure base 1-1.

[0052] like Figure 2 and 4 As shown, according to one embodiment of the present invention, an elevator 1-3 is provided on the external pressure column 1-2. The elevator 1-3 can be raised and lowered along the height direction of the external pressure column 1-2.

[0053] In this embodiment, the elevators 1-3 facilitate the installation of the stringers by production personnel.

[0054] According to one embodiment of this utility model, an external pressure column 1-2 is provided with a lifting guide rail 1-3-1 along its height direction. A passenger escalator 1-3-2 is installed on the lifting guide rail 1-3-1.

[0055] In this embodiment, for example, the passenger escalator 1-3-2 is slidably arranged along the lifting guide rail 1-3-1 to achieve lifting and lowering. Alternatively, the lifting guide rail 1-3-1 is slidably arranged along the external pressure column 1-2 and fixedly arranged with the passenger escalator 1-3-2 to drive the passenger escalator 1-3-2 to lift and lower.

[0056] like Figure 3 As shown, according to one embodiment of the present invention, in addition to the outer clamping drive cylinder 1-4-5 and the outer clamping block 1-4-2, the stringer positioning component also includes a stringer end clamping drive cylinder 1-4-3 and an inner positioning block 1-4-1 arranged along the axial direction of the cylinder segment. The inner positioning block 1-4-1 is connected to the telescopic rod of the stringer end clamping drive cylinder 1-4-3. By extending and retracting the telescopic rod of the stringer end clamping drive cylinder 1-4-3, the inner positioning block 1-4-1 is driven toward or away from the end of the stringer, so as to clamp or release the stringer from the end in the length direction of the stringer.

[0057] In this embodiment, the outer clamping block 1-4-2 cooperates with the inner positioning block 1-4-1 to clamp the stringer. For example, the stringer end clamping drive cylinder 1-4-3 can be an electric cylinder, etc.

[0058] like Figure 2 and 3As shown, according to one embodiment of the present invention, the external pressure column 1-2 is provided with an upper stringer positioning component 1-4 and a lower stringer positioning component 1-5 at positions near the two ends of the cylindrical section or the two ends of the stringer (i.e., near the upper and lower ends of the external pressure column 1-2) to press or release the stringer from both ends in the length direction of the stringer.

[0059] In this embodiment, the inner positioning blocks 1-4-1 of the upper stringer positioning component 1-4 and the lower stringer positioning component 1-5 are arranged opposite to each other and can have the same or substantially the same structure. The upper stringer positioning component 1-4 and the lower stringer positioning component 1-5 respectively press or release the stringer from the upper end and the lower end along the axial direction of the stringer to connect the stringer and the short cylinder. For example, the upper stringer positioning component 1-4 and the lower stringer positioning component 1-5 can be locked and fixed to the external pressure column 1-2 by bolts.

[0060] like Figure 5-8 As shown, according to one embodiment of the present invention, the inner positioning block 1-4-1 is provided with an inner positioning quick-connect hole 1-4-1-4 on the end face of the telescopic rod of the stringer end pressing drive cylinder 1-4-3. An inner positioning locking bolt hole 1-4-1-2 is provided on the side of the inner positioning block 1-4-1, and the inner positioning locking bolt hole 1-4-1-2 communicates with the inner positioning quick-connect hole 1-4-1-4. A locking component (e.g., a bolt or screw) is locked to the telescopic rod of the stringer end pressing drive cylinder 1-4-3 inserted into the inner positioning quick-connect hole 1-4-1-4 through the inner positioning locking bolt hole 1-4-1-2.

[0061] According to one embodiment of the present invention, the inner positioning quick-connect hole 1-4-1-4 has a rounded chamfer 1-4-1-1 on the outside, so that the telescopic rod of the stringer end pressing drive cylinder 1-4-3 can be inserted into the inner positioning quick-connect hole 1-4-1-4.

[0062] According to one embodiment of the present invention, an inner positioning wedge groove 1-4-1-5 is provided at the entrance of the inner positioning quick insertion hole 1-4-1-4 to facilitate the installation and positioning of the telescopic rod of the stringer end pressing drive cylinder 1-4-3 with the inner positioning quick insertion hole 1-4-1-4.

[0063] like Figure 9 As shown, according to one embodiment of the present invention, the inner positioning block 1-4-1 is used to mate the end face of the connecting stringer with the end face of the stringer. For example, the end face of the inner positioning block 1-4-1 used to connect the end of the connecting stringer is the inner positioning trapezoidal contour inner wall 1-4-1-3. The inner positioning trapezoidal contour inner wall 1-4-1-3 is a trapezoidal surface or a rectangular surface.

[0064] like Figure 3As shown, according to one embodiment of the present invention, for example, the stringer end clamping drive cylinder 1-4-3 can be connected to the outer clamping drive cylinder 1-4-5 via a clamping connecting block 1-4-4. For example, the clamping connecting block 1-4-4 is disposed on the outer clamping drive cylinder 1-4-5, and the stringer end clamping drive cylinder 1-4-3 is disposed on the end face of the clamping connecting block 1-4-4 facing the stringer.

[0065] like Figure 10-12 As shown, according to one embodiment of the present invention, the end face of the telescopic rod of the external clamping block 1-4-2 connected to the external clamping drive cylinder 1-4-5 is provided with an external clamping quick-connect hole 1-4-2-2. The upper end face of the external clamping block 1-4-2 is provided with an external clamping locking bolt hole 1-4-2-1, which communicates with the external clamping quick-connect hole 1-4-2-2. A locking component (e.g., a bolt or screw) is locked to the telescopic rod of the external clamping drive cylinder 1-4-5 inserted into the external clamping quick-connect hole 1-4-2-2 via the external clamping locking bolt hole 1-4-2-1.

[0066] In this embodiment, the external pressure quick-connect hole 1-4-2-2 is used to enable quick connection or replacement of the external pressure block 1-4-2 with the telescopic rod of the external pressure drive cylinder 1-4-5. For example, the external pressure locking bolt hole 1-4-2-1 can be a bolt hole.

[0067] like Figure 13 As shown, according to one embodiment of the present invention, an external pressure wedge groove 1-4-2-3 is provided at the outlet of the external pressure quick insertion hole 1-4-2-2 to facilitate the quick installation and positioning of the telescopic rod of the external pressure drive cylinder 1-4-5 and the external pressure quick insertion hole 1-4-2-2.

[0068] like Figure 11 As shown, the outer clamping block 1-4-2 is used to connect the end of the stringer. Two support arms can be set in the direction of the stringer. The two support arms and the end face of the outer clamping block 1-4-2 connecting the stringer together form a space to accommodate the stringer.

[0069] The external pressure fixture in this embodiment can better wrap the stringers and clamp and fix them.

[0070] According to one embodiment of the present invention, the two support arms and the end faces of the connecting stringers of the outer clamping block 1-4-2 enclose each other to form an outer pressure-shaped trapezoidal inner wall 1-4-2-4. The cross-section of the space enclosed by the outer pressure-shaped trapezoidal inner wall 1-4-2-4 is adapted to the cross-section of the stringers, for example, it is trapezoidal or rectangular.

[0071] like Figure 2 , 14As shown in Figure 15, according to one embodiment of the present invention, in addition to the external pressure component 1 and the internal support component 2, the external pressure fixture also includes a welding component 1-6. The welding component 1-6 includes a welding mechanism 1-6-2. The welding mechanism 1-6-2 includes a Z-axis slider 1-6-2-1, a Y-axis slider 1-6-2-2, and a welding head 1-6-2-4. Along the axial direction of the cylinder segment, the Z-axis slider 1-6-2-1 is slidably disposed with respect to the side of the external pressure column 1-2. Along the radial direction of the cylinder segment, the Y-axis slider 1-6-2-2 is slidably disposed with respect to the Z-axis slider 1-6-2-1. The Z-axis slider 1-6-2-1 can drive the Y-axis slider 1-6-2-2 to move along the axial direction of the cylinder segment. The welding head 1-6-2-4 is disposed on the Y-axis slider 1-6-2-2, so that the welding head 1-6-2-4 can move along the axial or radial direction of the cylinder segment.

[0072] In this embodiment, the Y-axis slider 1-6-2-2 moves the welding head 1-6-2-4 closer to or further away from the stringer. The Z-axis slider 1-6-2-1 moves the Y-axis slider 1-6-2-2 up and down, allowing the welding head 1-6-2-4 to weld the entire stringer. For example, the external pressure column 1-2 is equipped with a lead screw guide along its height direction, and the welding component 1-6 is mounted on the lead screw guide to control the lifting and lowering of the welding component 1-6.

[0073] For example, welding head 1-6-2-4 can be connected to Y-axis slider 1-6-2-2 via welding connecting block 1-6-2-3. That is, welding connecting block 1-6-2-3 is fixedly mounted on Y-axis slider 1-6-2-2, and welding head 1-6-2-4 is mounted on welding connecting block 1-6-2-3. For example, Y-axis slider 1-6-2-2 can be a linear guide, and welding connecting block 1-6-2-3 or welding head is fixedly connected to the movable slider of Y-axis slider 1-6-2-2. By controlling the movement of the slider, welding connecting block 1-6-2-3 or welding head is moved towards or away from the short cylinder. For example, welding head 1-6-2-4 can be a galvanometer welding system for laser welding of stringers.

[0074] like Figure 16As shown, according to one embodiment of the present invention, in addition to the welding mechanism 1-6-2, the welding component 1-6 also includes a welding clamping mechanism 1-6-1. The welding clamping mechanism 1-6-1 includes a clamping connecting plate 1-6-1-2, an X-shaped connecting rod 1-6-1-4, and a stringer clamping block 1-6-1-6. The clamping connecting plate 1-6-1-2 is fixedly connected to the Y-axis slider 1-6-2-2. The X-shaped connecting rod 1-6-1-4 is disposed on the clamping connecting plate 1-6-1-2, and the two first ends of the X-shaped connecting rod 1-6-1-4 are respectively connected to a stringer clamping block 1-6-1-6. By moving the two second ends of the X-shaped connecting rod 1-6-1-4 closer to or further away from each other, the two first ends of the X-shaped connecting rod 1-6-1-4 drive the two stringer clamping blocks 1-6-1-6 to move closer to or further away from each other, so as to clamp or release the stringer from opposite sides of the stringer.

[0075] In this embodiment, the welding clamping mechanism 1-6-1 cooperates with the positioning component to press the stringer against the outer side of the short cylinder, ensuring that the weldable part of the stringer is in contact with the short cylinder, so as to weld the part of the stringer to be welded. This external pressure fixture can improve welding efficiency and welding quality.

[0076] According to one embodiment of this utility model, for example, the connecting block 1-6-3 can be provided with a welding connecting plate 1-6-2-5. The clamping connecting plate 1-6-1-2 can be connected to the welding connecting plate 1-6-2-5 via the base plate 1-6-1-1 to adjust the position of the welding head 1-6-2-4 and the welding clamping mechanism 1-6-1. For example, the base plate 1-6-1-1 and the welding connecting plate 1-6-2-5 can be locked together with bolts. The clamping connecting plate 1-6-1-2 and the base plate 1-6-1-1 can also be locked together with bolts.

[0077] like Figure 16 As shown, according to one embodiment of the present invention, in addition to the pressing connecting plate 1-6-1-2, the X-shaped connecting rod 1-6-1-4, and the stringer clamping block 1-6-1-6, the welding pressing mechanism 1-6-1 also includes two connecting rod drive cylinders 1-6-1-3. The two connecting rod drive cylinders 1-6-1-3 are rotatably connected to the pressing connecting plate 1-6-1-2. The telescopic rods of the two connecting rod drive cylinders 1-6-1-3 are rotatably connected to the two second ends of the X-shaped connecting rod 1-6-1-4, respectively. By extending and retracting the telescopic rods of the connecting rod drive cylinders 1-6-1-3, the two second ends of the X-shaped connecting rod 1-6-1-4 are driven to move closer to or further away from each other.

[0078] In this embodiment, for example, the connecting rod drive cylinder 1-6-1-3 can be an electric cylinder or the like. The second end of the X-type connecting rod 1-6-1-4 can be locked and fixed to the telescopic rod of the connecting rod drive cylinder 1-6-1-3 by bolts and nuts. When the telescopic rod of the connecting rod drive cylinder 1-6-1-3 retracts, the stringer clamping block 1-6-1-6 clamps the stringer and presses it against the outer wall of the short cylinder.

[0079] According to one embodiment of the present invention, for example, the welding clamping mechanism 1-6-1 may have two clamping connecting plates 1-6-1-2 arranged horizontally (on opposite sides of the stringer). The two clamping connecting plates 1-6-1-2 are spaced apart, and each clamping connecting plate 1-6-1-2 corresponds to a stringer clamping block 1-6-1-6. Correspondingly, the welding connecting block 1-6-2-3 is provided with two welding connecting plates 1-6-2-5, and the two clamping connecting plates 1-6-1-2 are respectively connected to the welding connecting block 1-6-2-3 through a welding connecting plate 1-6-2-5. The welding head 1-6-2-4 is arranged between the two welding connecting plates 1-6-2-5 to weld the part of the stringer to be welded.

[0080] According to one embodiment of the present invention, for example, the welding clamping mechanism 1-6-1 further includes a connecting rod 1-6-1-5. Both ends of the connecting rod 1-6-1-5 are fixedly connected to a clamping connecting plate 1-6-1-2 (for example, both ends of the connecting rod 1-6-1-5 are respectively connected to a clamping connecting plate 1-6-1-2). A rotating shaft is provided in the middle of the connecting rod 1-6-1-5, and the intersection point of the X-shaped connecting rod 1-6-1-4 is rotatably connected to the rotating shaft.

[0081] According to one embodiment of the present invention, for example, the welding clamping mechanism 1-6-1 is provided with two sets of clamping connecting plates 1-6-1-2 in the height direction. Each set of clamping connecting plates 1-6-1-2 includes two horizontally placed clamping connecting plates 1-6-1-2 (i.e., a total of four clamping connecting plates 1-6-1-2). Along the height direction, the welding clamping mechanism 1-6-1 is provided with two X-shaped connecting rods 1-6-1-4. The upper set of clamping connecting plates 1-6-1-2 is provided with two connecting rod drive cylinders 1-6-1-3, and the telescopic rods of the connecting rod drive cylinders 1-6-1-3 are rotatably connected to the two second ends of one X-shaped connecting rod 1-6-1-4. The lower set of clamping connecting plates 1-6-1-2 is provided with two connecting rod drive cylinders 1-6-1-3, and the telescopic rods of the connecting rod drive cylinders 1-6-1-3 are rotatably connected to the two second ends of the other X-shaped connecting rod 1-6-1-4. The two first ends of the upper X-shaped connecting rod 1-6-1-4 are respectively connected to the upper part of a stringer clamping block 1-6-1-6, and the two first ends of the lower X-shaped connecting rod 1-6-1-4 are respectively connected to the lower part of a stringer clamping block 1-6-1-6, so as to better clamp and fix the stringer with the stringer clamping block 1-6-1-6.

[0082] According to one embodiment of the present invention, the stringer clamping block 1-6-1-6 is used to clamp the end face of the stringer.

[0083] like Figure 17 and 18 As shown, according to one embodiment of the present invention, connecting bosses 1-6-1-6-5 are respectively provided at both ends of the stringer clamping block 1-6-1-6 in the length direction (i.e., the height direction). The first end of the X-shaped connecting rod 1-6-1-4 is connected to the connecting bosses 1-6-1-6-5 of the stringer clamping block 1-6-1-6.

[0084] In this embodiment, for example, such as Figure 19 As shown, the connecting boss 1-6-1-6-5 has a circular hole 1-6-1-6-6 along the length of the stringer clamping block 1-6-1-6. The first end of the X-type connecting rod 1-6-1-4 is connected to the circular hole 1-6-1-6-6.

[0085] According to one embodiment of the present invention, the stringer clamping block 1-6-1-6 is used to clamp the end face of the stringer and is provided with at least one welding clearance groove 1-6-1-6-2. The welding clearance groove 1-6-1-6-2 is used to provide welding space for the welding head 1-6-2-4, ensuring that the welding head 1-6-2-4 welds the stringer.

[0086] like Figure 20As shown, according to one embodiment of the present invention, the stringer clamping block 1-6-1-6 is provided with a protective gas chamber 1-6-1-6-4, a gas inlet 1-6-1-6-1, and a protective gas outlet 1-6-1-6-3. The gas inlet 1-6-1-6-1 and the protective gas outlet 1-6-1-6-3 are connected to the protective gas chamber 1-6-1-6-4. The protective gas outlet 1-6-1-6-3 is located on the end face of the stringer clamping block 1-6-1-6 used to clamp the stringer. Protective gas is supplied to the protective gas chamber 1-6-1-6-4 from the gas inlet 1-6-1-6-1, and the protective gas is blown out from the protective gas outlet 1-6-1-6-3 to supply protective gas to the welding part of the stringer.

[0087] In this embodiment, for example, the protective gas outlet 1-6-1-6-3 can be provided at the welding clearance groove 1-6-1-6-2. Each welding clearance groove 1-6-1-6-2 has multiple protective gas outlets 1-6-1-6-3 arranged in an array, for example, three columns and five rows of protective gas outlets 1-6-1-6-3. The diameter of the protective gas outlet 1-6-1-6-3 can be 1~5mm. The protective gas cavity 1-6-1-6-4 can be a protective gas cavity body.

[0088] The above embodiments of this utility model can be combined with each other and have corresponding technical effects.

[0089] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An external pressure tooling for welding the outer girder of a stainless steel rocket propellant tank section, characterized in that, include: An external pressure column and stringer positioning component; the stringer positioning component is disposed on the side of the external pressure column; the stringer positioning component includes an external pressure driving cylinder and an external pressure block disposed along the radial direction of the cylinder segment, the external pressure block being connected to the telescopic rod of the external pressure driving cylinder; by extending and retracting the telescopic rod of the external pressure driving cylinder, the external pressure block is driven toward or away from the stringer on the circumferential side of the cylinder segment, so as to press the stringer to the circumferential side of the cylinder segment or release the stringer, and weld the cylinder segment and the stringer.

2. The external pressure tooling according to claim 1, characterized in that, It also includes an external pressure linear guide rail; the external pressure column is slidably arranged relative to the external pressure linear guide rail so that the external pressure column drives the stringer positioning component to move closer to or away from the cylinder section.

3. The external pressure tooling according to claim 1, characterized in that, The stringer positioning component further includes a stringer end clamping drive cylinder and an inner positioning block arranged along the axial direction of the cylinder segment. The inner positioning block is connected to the telescopic rod of the stringer end clamping drive cylinder. By extending and retracting the telescopic rod of the stringer end clamping drive cylinder, the inner positioning block is driven toward or away from the end of the stringer, so as to clamp or release the stringer from the end in the length direction of the stringer.

4. The external pressure tooling according to claim 1, characterized in that, The outer clamping block is used to connect two arms at the end of the stringer facing the stringer. The two arms and the end face of the stringer connected to the outer clamping block enclose a space to accommodate the stringer.

5. The external pressure fixture according to claim 1, characterized in that, It also includes a welding component; the welding component includes a welding mechanism; the welding mechanism includes a Z-axis slider, a Y-axis slider and a welding head; along the axial direction of the cylinder segment, the Z-axis slider is slidably disposed with respect to the side of the external pressure column; along the radial direction of the cylinder segment, the Y-axis slider is slidably disposed with respect to the Z-axis slider; the Z-axis slider can drive the Y-axis slider to move along the axial direction of the cylinder segment, and the welding head is disposed on the Y-axis slider so that the welding head can move along the axial or radial direction of the cylinder segment.

6. The external pressure tooling according to claim 5, characterized in that, The welding component further includes a welding clamping mechanism; the welding clamping mechanism includes a clamping connecting plate, an X-shaped connecting rod, and stringer clamping blocks; the clamping connecting plate is fixedly connected to the Y-axis slider, the X-shaped connecting rod is rotatably connected to the clamping connecting plate, and the two first ends of the X-shaped connecting rod are respectively connected to one of the stringer clamping blocks; by moving the two second ends of the X-shaped connecting rod closer or further away from each other, the two first ends of the X-shaped connecting rod drive the two stringer clamping blocks closer or further away from each other, so as to clamp or release the stringer from opposite sides of the stringer.

7. The external pressure tooling according to claim 6, characterized in that, The welding clamping mechanism further includes two connecting rod drive cylinders; the two connecting rod drive cylinders are rotatably connected to the clamping connecting plate; the telescopic rods of the two connecting rod drive cylinders are rotatably connected to the two second ends of the X-shaped connecting rod respectively; by extending and retracting the telescopic rods of the connecting rod drive cylinders, the two second ends of the X-shaped connecting rod are driven to move closer or further apart from each other.

8. The external pressure tooling according to claim 7, characterized in that, The welding clamping mechanism further includes a connecting rod; both ends of the connecting rod are fixedly connected to the clamping connecting plate; a rotating shaft is provided in the middle of the connecting rod, and the intersection of the X-shaped connecting rod is rotatably connected to the rotating shaft.

9. The external pressure tooling according to claim 6, characterized in that, The stringer clamping block is used to clamp the end face of the stringer, which is provided with at least one welding clearance groove; the welding clearance groove is used to allow welding space for the welding head.

10. The external pressure tooling according to claim 6, characterized in that, The stringer clamping block is provided with a protective air chamber, an air nozzle inlet, and a protective air outlet; the air nozzle inlet and the protective air outlet are connected to the protective air chamber; the protective air outlet is located on the end face of the stringer clamping block used to clamp the stringer; protective air is supplied to the protective air chamber from the air nozzle inlet, and the protective air is blown out from the protective air outlet to supply protective air to the stringer welding part.

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