A kind of thick wall large stress welding piece space size guarantee process equipment

Abstract

A kind of thick wall big stress welding spare space size guarantee process equipment, the process equipment is composed of positioning platform, main body fixed assembly, pipe bend fixed assembly three parts, material is practical 20# steel.Economic realization method;First base is used for the positioning and placement of product and fixture, main body fixed assembly includes outlet ring positioning seat, shell positioning lifting shaft etc., realize the reliable fixation of product, provide support and reference for the positioning welding of tooling at the same time.The positioning assembly of pipe bend includes positioning plate, inlet pipe third base etc., realize the positioning requirement of pipe bend.The invention realizes the space welding size guarantee requirement of gas generator by integrated fixed clamping structure.Solve the technical problem of high-precision, multi-dimensional space size requirement of gas generator with multi-section special-shaped pipe connected, welding stress, effectively guarantee the external dimension of generator and the space relative position size of each interface, realize the smooth assembly of liquid rocket engine.

Description

TECHNICAL FIELD

[0001] The application relates to a thick-wall large-stress welding piece space size guarantee process equipment and belongs to the technical field of machinery. BACKGROUND

[0002] Traditional thick-wall large-stress welding piece space size guarantee process equipment is mainly used for the assembly and positioning of a gas generator with multiple-section special-shaped pipe joints, large wall thickness and high space size requirements. Since the inlet end of the gas generator is a completely open interface, there is no structural limit in each direction, and the thick-wall piece is welded, the welding stress after welding is large, and deformation is easy. However, the space size requirements are many and high in precision, and the space size in each direction is difficult to guarantee at the same time. SUMMARY

[0003] The technical problem solved by the application is to overcome the shortcomings of the prior art and provide a thick-wall large-stress welding piece space size guarantee process equipment, which realizes the space size guarantee requirement of the thick-wall, large-stress open inlet gas generator.

[0004] The technical solution of the application is that the product and the clamp are arranged as a whole in space by designing a positioning platform, the position of each interface of the generator is fixed by using a lifting shaft, a positioning seat and a third base, and the outer expansion size of the bent pipe is limited by using a positioning plate to control the center position of the bent pipe, so that the full-position size control requirement of each interface of the gas generator in each direction is realized. Specifically, it comprises an adapter sleeve, a positioning pin, a positioning sleeve, a lifting shaft, an adjusting nut, a D-shaped key, a stand, a first bolt, a second bolt, a hook-shaped bolt, a nut, a positioning plate, a positioning seat, a third bolt, a pin shaft, a sleeve, a first base, a second base and a third base.

[0005] The first base provides support for the whole process equipment.

[0006] The positioning seat is connected with the first base as a main positioning reference surface, the external welded part is placed vertically upward on the positioning seat with the outlet ring as the reference, and the product outlet ring is fixed with the positioning seat through the hook-shaped bolt and the nut.

[0007] The second base is fixed to the first base through the first bolt, the second base is connected with the lifting shaft and is positioned through the D-shaped key.

[0008] The lifting shaft is positioned with the positioning sleeve through the positioning pin, and the height of the positioning sleeve can be adjusted through the adjusting nut to realize the fixed limiting of the product shell.

[0009] The stand is fixed to the first base, is connected with the adapter sleeve and the positioning plate through the second bolt, and is used for limiting the space position size of the product bent pipe.

[0010] The third base is fixed with the first base through positioning pins and a third bolt, and is connected with the sleeve to fix the space position of the product inlet pipe.

[0011] Further, the positioning seat is connected with the outlet ring, and the inner profile of the positioning seat convex is used to realize accurate positioning of the gas generator.

[0012] Further, the positioning seat is connected with the outlet ring through a hook type bolt to realize firm fixing of the gas generator.

[0013] Further, the second base is connected with the lifting shaft, the height is adjusted by rotating the adjusting nut of the lifting shaft, and the degree of freedom of the lifting shaft is limited by the D-shaped key to ensure that the lifting shaft is adjusted in only one degree of freedom direction in the axial direction to find the height position of the shell.

[0014] Further, the lifting shaft is positioned with the positioning sleeve through positioning pins to effectively control the space position of the shell.

[0015] Further, the second base, the positioning seat, the third base and the column are fixed with the first base, and the reference is consistent, so that the sizes of the interfaces of the gas generator are controlled.

[0016] Further, the third base is fixed on the first base, the sleeve is limited by the pin shaft and the third base, and the sleeve is connected with the product to position the space size of the inlet pipe.

[0017] Further, the positioning plate limits the space position of the elbow pipe, the center of the elbow pipe is positioned by positioning the outer contour of the elbow pipe through positioning plate and positioning reference conversion, the positioning pin is removed after positioning, the sleeve is rotated by 180°, and the pin shaft is used for repositioning to avoid interference between the positioning baffle and subsequent welding operation.

[0018] Further, the first bolt, the second bolt and the third bolt are respectively M10*25 bolts, M6*14 bolts and M12*25 bolts.

[0019] Further, the nut is an M10 nut.

[0020] Compared with the prior art, the present application has the following advantages:

[0021] (1) The lifting shaft structure is designed, the degree of freedom of the lifting shaft is limited by the D-shaped key, the lifting shaft is ensured to move in only one direction in the axial direction when moving up and down, and the fixed nut and stud screw structure are used to realize the up and down movement of the lifting shaft.

[0022] (2) The present application realizes the purpose of controlling the center position size of the elbow pipe by controlling the outer contour size of the elbow pipe through the positioning plate structure to transform the center of the elbow pipe and the outer contour size of the elbow pipe, and the design of the elbow pipe takes into account the interference of the positioning fixture to the welding operation, and a rotatable adapter sleeve is designed, which is rotated to the direction of 180° after positioning to avoid the interference of the welding operation;

[0023] (3) The present application realizes the precise control of the spatial position of the inlet pipe by fixing the third base, the sleeve and the positioning pin to the first base;

[0024] (4) The present application realizes the position size requirement of the shell by adjusting the height of the nut rotating lifting shaft, and positioning the shell by the positioning sleeve and the positioning pin. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a gas generator interface structure diagram; 20 - shell; 21 - elbow pipe; 22 - tee; 23 - inlet pipe; 24 - outlet ring; 25 - collector ring;

[0026] Figure 2 is a schematic diagram of the effect after the product and tooling are assembled;

[0027] Figure 3 、 4 is a schematic diagram of the tooling structure; 1 - adapter sleeve; 2 - positioning pin; 3 - positioning sleeve; 4 - lifting shaft; 5 - adjusting nut; 6 - D-shaped key; 7 - stand; 8 - second base; 9 - M10x25 bolt; 10 - M6x14 bolt; 11 - hook-shaped bolt; 12 - M10 nut; 13 - positioning plate; 14 - positioning seat; 15 - M12x25 bolt; 16 - pin shaft; 17 - first base; 18 - sleeve; 19 - third base;

[0028] Figure 5 is a schematic diagram of the tooling lifting shaft connecting various components structure; 2 - positioning pin; 3 - positioning sleeve; 4 - lifting shaft; 5 - adjusting nut; 8 - base;

[0029] Figure 6 is a schematic diagram of the tooling third base connecting various components structure; 19 - third base; 18 - sleeve; 2 - positioning pin;

[0030] Figure 7 is a schematic diagram of the tooling positioning plate connecting various components structure; 13 - positioning plate; 7 stand; 1 - adapter sleeve; 2 - positioning pin. DETAILED DESCRIPTION

[0031] To better understand the above technical solutions, the technical solutions of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0032] The following description, in conjunction with the accompanying drawings, provides a more detailed explanation of the spatial dimension assurance process equipment for thick-walled, high-stress welded components provided in the embodiments of this application. Specific implementation methods may include (e.g.) Figures 1-7 (As shown): Adapter sleeve, positioning pin, positioning sleeve, lifting shaft, adjusting nut, T-key, column, first bolt, second bolt, hook bolt, nut, positioning plate, positioning seat, third bolt, pin, sleeve, first base, second base, and third base; the first base provides support for the entire process equipment; the positioning seat is connected to the first base as the main positioning reference surface, and the external welded parts are placed vertically upward on the positioning seat with the outlet ring as the reference, and the product outlet ring is fixed to the positioning seat by hook bolts and nuts; the second base is fixed to the first base by the first bolt, and the second base is connected to the lifting shaft and positioned by a T-key; the lifting shaft and positioning sleeve are positioned by the positioning pin, and the height of the positioning sleeve can be adjusted by the adjusting nut to achieve fixed positioning with the product shell; the column is fixed to the first base and connected to the adapter sleeve and positioning plate by the second bolt, used to limit the spatial position of the product bend; the third base is fixed to the first base by the positioning pin and the third bolt, and connected to the sleeve to fix the spatial position of the product inlet pipe.

[0033] Furthermore, in one possible implementation, the positioning seat is connected to the outlet ring, and the gas generator is accurately positioned by utilizing the raised inner surface of the positioning seat.

[0034] In one possible implementation, the positioning seat and the outlet ring hook bolt securely fix the gas generator.

[0035] In one possible implementation, the second base is connected to the lifting shaft, and the height is adjusted by rotating the lifting shaft using an adjusting nut. The degree of freedom of the lifting shaft is restricted by a T-key, ensuring that the lifting shaft is adjusted only in one axial direction to align the height of the housing.

[0036] Furthermore, the lifting shaft and the positioning sleeve are positioned by positioning pins, effectively controlling the spatial position of the housing.

[0037] Optionally, in one possible implementation, the second base, positioning seat, third base, and column are all fixed to the first base, with consistent reference, which facilitates control of the dimensions of each interface of the gas generator.

[0038] In one possible implementation, the third base is fixed to the first base, the sleeve is limited by the pin shaft and the third base, and the sleeve is connected to the product to position the inlet pipe space size.

[0039] Further, the positioning plate limits the space position of the elbow pipe; the positioning plate is used to position the outer contour of the elbow pipe to realize the positioning of the center of the elbow pipe through the positioning reference conversion; after the positioning is completed, the positioning pin is removed, the sleeve is rotated by 180°, and the positioning of the pin shaft is used to avoid the interference between the positioning baffle and the subsequent welding operation.

[0040] Optionally, the first bolt, the second bolt and the third bolt are M10*25 bolts, M6*14 bolts and M12*25 bolts respectively.

[0041] Optionally, the nut is an M10 nut.

[0042] In the scheme provided in the embodiments of the application, as shown in Figure 1 The space structure of the gas generator is shown, wherein the inlet pipe is an open structure, the product itself has no limitation on the inlet pipe, and the structure after welding usually causes the deviation of the angle and the three-dimensional size in each direction due to the welding stress, which directly interferes with the assembly of the liquid rocket engine in a serious case, and therefore the gas generator has strict requirements on the three-dimensional size of each interface.

[0043] Before the tool is used, the main body of the gas generator is completed, and the tool mainly realizes the assembly and welding space size guarantee of the multi-section elbow pipe. As shown in Figure 3 、 4 The figure is a schematic diagram of the assembly effect of the tool and the gas generator, the positioning of the outlet ring of the gas generator is realized by using the positioning seat and the hook head bolt, the positioning of the shell of the gas generator is realized by using the lifting shaft structure, the positioning of the inlet pipe of the gas generator is realized by using the third base, the limitation of the elbow pipe is realized by using the positioning plate, and the butt joint quality of each section and the space size requirement of the gas generator are guaranteed by the repair of the tee pipe. The specific implementation steps are as follows:

[0044] 1. Place the main body of the gas generator on the positioning seat, determine the center by using the inner profile of the outlet ring of the generator, and fix the main body of the gas generator by using the hook head bolt through the outer profile of the outlet ring.

[0045] 2. Adjust the height of the lifting shafts on both sides, and fix the shells of the gas generator on both sides by using the positioning sleeve.

[0046] 3. Fix the inlet pipe of the gas generator by using the third base.

[0047] 4. Assemble the elbow pipe of the gas generator, and limit the center position of the elbow pipe by using the positioning plate.

[0048] 5、Repair gas generator tee pipe, realize three direction welding interface butt joint quality, finally reach guarantee gas generator space quality purpose.

[0049] Gas generator assembly process uses first fixed gas generator collector main body, shell and inlet pipe, to tee and elbow pipe repair positioning and welding process mode, control gas generator space size.

[0050] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

[0051] The content not described in detail in the specification of the present application is the known technology of those skilled in the art.

Claims

1. A thick-walled large stress welding component spatial dimension guarantee process equipment, comprising an adapter sleeve, a positioning pin, a positioning sleeve, a lifting shaft, an adjusting nut, a T-shaped key, a column, a first bolt, a second bolt, a hook-shaped bolt, a nut, a positioning plate, a positioning seat, a third bolt, a pin shaft, a sleeve, a first base, a second base and a third base; The first base provides support for the entire process equipment. The positioning seat is connected with the first base as the main positioning reference surface, and the external welding component is placed vertically upward on the positioning seat with the outlet ring as the reference, and the product outlet ring is fixed with the positioning seat through the hook-shaped bolt and the nut. The second base is fixed to the first base by the first bolt, and the second base is connected with the lifting shaft and positioned by the T-shaped key. The lifting shaft is positioned with the positioning sleeve by the positioning pin, and the height of the positioning sleeve can be adjusted by the adjusting nut to realize the fixed limiting of the two side shells of the product. The column is fixed to the first base and connected with the adapter sleeve and the positioning plate by the second bolt, which is used to limit the spatial position size of the product elbow. The third base is fixed to the first base by the third bolt, and the sleeve is connected and fixed to the product inlet pipe space position by the positioning pin. The second base is connected with the lifting shaft, and the height of the lifting shaft is adjusted by rotating the adjusting nut, and the degree of freedom of the lifting shaft is limited by the T-shaped key to ensure that the lifting shaft is only adjusted in one degree of freedom direction, and the height position of the shell is aligned. The second base, the positioning seat, the third base and the column are fixed with the first base, and the reference is consistent, which is convenient for controlling the size of each interface of the gas generator. The positioning plate limits the spatial position of the elbow, and through the positioning reference conversion, the positioning plate is used to position the outer contour of the elbow to realize the positioning of the center of the elbow. After positioning, the positioning pin is removed, the sleeve is rotated by 180°, and the positioning pin is used for repositioning to avoid the interference between the positioning baffle and the subsequent welding operation.

2. A process equipment for ensuring the spatial dimensions of thick-walled, high-stress weldments according to claim 1, characterized in that, The positioning seat is connected with the outlet ring, and the inner profile of the positioning seat is used to realize the accurate positioning of the gas generator.

3. The process equipment for guaranteeing spatial dimensions of thick-walled large-stressed welded parts according to claim 1, characterized in that, The positioning seat and the outlet ring are fixed firmly by the hook-shaped bolt.

4. The process equipment for guaranteeing spatial dimensions of thick-walled large-stressed welded parts according to claim 1, characterized in that, The lifting shaft and the positioning sleeve are positioned by the positioning pin to effectively control the spatial position of the shell.

5. The process equipment for guaranteeing spatial dimensions of thick-walled large-stressed welded parts according to claim 1, characterized in that, The first bolt, the second bolt and the third bolt are M10x25 bolts, M6x14 bolts and M12x25 bolts, respectively.

6. A process equipment for ensuring the spatial dimensions of thick-walled, high-stress weldments according to claim 1, characterized in that, The nut is an M10 nut.

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