A self-positioning device for the production of ball joint-type conduits for aerospace liquid engines

Abstract

This invention relates to a self-positioning device for the production of spherical connector-type conduits for aerospace liquid engines. The device includes a left mounting component, a right mounting component, and a spherical connector-type conduit. Both the left and right mounting components have internal grooves and fastening grooves on their mating surfaces. A hook-shaped clamp assembly is fixedly connected to the top of the right mounting component, locking the left and right mounting components together. A movable connector is fixedly connected to the bottom of the right mounting component, allowing for opening and closing between the left and right mounting components. The spherical connector-type conduit includes a conduit, a connector outer nut, and a spherical connector. The left and right mounting components are secured to the connector outer nut by the hook-shaped clamp assembly. The cylindrical end of the spherical connector extends beyond the connector outer nut, limiting the movement between the spherical connector and the connector outer nut. This invention solves the technical problems of low production efficiency and time-consuming and labor-intensive stress relief during the production of existing spherical connectors.

Description

Technical Field

[0001] This invention relates to a self-positioning device for the production of ball joint conduits for aerospace liquid engines, belonging to the field of aerospace liquid engine conduit production technology. Background Technology

[0002] Aerospace liquid engines refer to liquid propellant rocket engines, which are chemical rocket propulsion systems that use liquid chemicals as energy and working fluid.

[0003] The production process of aerospace liquid engine conduits involves a large number of spherical joints. The conduits with spherical joints have a diameter of about 30mm, and at least two rounds of welding are required to complete the production of the conduit. The sealing surface that mates with the spherical joint is a sphere. The parts that mate with the spherical joint have 5 degrees of freedom in the same position. The large number of degrees of freedom makes it difficult to ensure the consistency of the spatial position of the joint during conduit repair, the first round of welding, and the second round of welding. This requires repeated adjustments to the spatial position of the joint, which is time-consuming and labor-intensive, and the conduit production cycle is relatively long.

[0004] Furthermore, during the conduit assembly process, the deformation of the conduit due to welding shrinkage is difficult to control. In order to eliminate the assembly deviation caused by welding deformation during assembly, stress relief treatment of the conduit is required. Currently, the stress relief method is for operators to perform cold alignment of the conduit's direction based on their own experience. Due to the lack of a clear alignment target, there are repeated adjustments, which are time-consuming, labor-intensive, and have low assembly efficiency. Summary of the Invention

[0005] The technical problem solved by this invention is to overcome the shortcomings of the prior art and propose a self-positioning device for the production of ball joint conduits for aerospace liquid engines, which solves the technical problems of low production efficiency and time-consuming and labor-intensive process of removing assembly stress in the production of existing ball joints.

[0006] The solution of the present invention is:

[0007] A self-positioning device for the production of ball-shaped connector conduits for aerospace liquid engines includes a left mounting component, a right mounting component, and a ball-shaped connector conduit.

[0008] Both the left and right mounting parts have internal grooves, and both the mating surfaces of the left and right mounting parts have fastening grooves. The top of the right mounting part is fixedly connected to a hook-shaped clamp assembly, which locks the left and right mounting parts together. The bottom of the right mounting part is fixedly connected to a movable connector, which allows the left and right mounting parts to open and close.

[0009] Ball-type conduits include conduits, connector sleeve nuts, and ball-shaped connectors.

[0010] One end of the conduit is fixedly connected to the engine, and the other end of the conduit matches the shape of the ball joint. The spherical end of the ball joint is placed in the outer nut of the joint, and the cylindrical end of the ball joint extends out of the outer nut of the joint. The outer diameter of the cylindrical end is smaller than the hole diameter on one side of the outer nut of the joint. The outer nut of the joint is connected to the other end of the conduit, and the other end of the conduit mates with the spherical end of the ball joint. The ball joint can rotate in six degrees of freedom in the outer nut.

[0011] The left and right mounting parts are secured to the outer nut of the connector via a hook-shaped clamp assembly. The cylindrical end of the ball connector extends out of the outer nut of the connector, thereby limiting the movement between the ball connector and the outer nut of the connector.

[0012] Furthermore, the movable connector includes a first mounting base, a second mounting base, and a rotating shaft, with the first mounting base and the second mounting base respectively mounted on the left mounting component and the right mounting component.

[0013] Furthermore, mounting holes are provided on the side of both the first mounting base and the side of both the second mounting base, and the rotating shaft is movably sleeved inside the mounting holes. Limiting circular plates are fixedly installed on both the left and right ends of the rotating shaft.

[0014] Furthermore, the hook-shaped clamp assembly includes a mounting plate and a mounting brace, which are respectively mounted on the left mounting member and the right mounting member.

[0015] Furthermore, the side of the mounting plate is provided with hook-shaped parts, the surface of the mounting support is movably mounted with a control plate, the middle of the control plate is movably sleeved with a ring buckle, and the surface of the mounting support is movably sleeved with a special-shaped spring.

[0016] Furthermore, the two ends of the irregularly shaped spring are fixedly connected to the inside of the control panel and the surface of the left mounting piece, respectively.

[0017] Furthermore, the hook-shaped part of the mounting plate is fastened by pressing the control plate.

[0018] Furthermore, the diameter of the slot hole is 0.05-0.1mm larger than the outer diameter of the nut on the connector.

[0019] Furthermore, the diameter of the fastening groove is 0.06-0.1 mm larger than the diameter of the cylindrical end of the ball joint.

[0020] Furthermore, the length of the cylindrical end of the ball joint extending beyond the outer nut of the joint is 17-27mm.

[0021] The beneficial effects of this invention compared to the prior art are:

[0022] (1) This invention provides a ball joint type conduit for production and assembly of aerospace liquid engine. By designing and manufacturing a ball joint self-positioning tooling, the tooling takes the outer nut of the joint as the reference, realizes the automatic positioning and constraint of the spatial position of the joint, and ensures the consistency of the spatial position of the joint in the conduit filing, welding round one and welding round two.

[0023] (2) The tooling also quantifies the deformation of the conduit welding, ensuring coaxial welding and providing a target for on-site operators to perform cold alignment of the conduit. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the overall bottom structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the tooling fixture of the present invention after it has been opened;

[0027] Figure 4 This is a schematic diagram of the movable connector structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the hook-shaped clamp assembly structure of the present invention.

[0029] Numbering in the diagram: 1-Left mounting part; 2-Right mounting part; 3-Slot; 4-Fastening slot; 5-Hook clamp assembly; 6-Modible connector; 51-Mounting plate; 52-Mounting support; 53-Control plate; 54-Ring buckle; 55-Irregular spring; 61-First mounting seat; 62-Second mounting seat; 63-Rotating shaft. Detailed Implementation

[0030] The present invention will be further described below with reference to the embodiments.

[0031] Depend on Figure 1-5 The present invention includes a left mounting part 1 and a right mounting part 2. Both the left mounting part 1 and the right mounting part 2 are provided with a sleeve groove 3 inside. Both the left mounting part 1 and the right mounting part 2 are provided with a fastening groove 4 on their mating surfaces. The top of the right mounting part 2 is fixedly connected to a hook-shaped clamp assembly 5, and the bottom of the right mounting part 2 is fixedly connected to a movable connector 6.

[0032] Both the left and right mounting parts have internal grooves, and both the mating surfaces of the left and right mounting parts have fastening grooves. The top of the right mounting part is fixedly connected to a hook-shaped clamp assembly, which locks the left and right mounting parts together. The bottom of the right mounting part is fixedly connected to a movable connector, which allows the left and right mounting parts to open and close.

[0033] Ball-type conduits include conduits, connector sleeve nuts, and ball-shaped connectors.

[0034] One end of the conduit is fixedly connected to the engine, and the other end of the conduit matches the shape of the ball joint. The spherical end of the ball joint is placed in the outer nut of the joint, and the cylindrical end of the ball joint extends out of the outer nut of the joint. The outer diameter of the cylindrical end is smaller than the hole diameter on one side of the outer nut of the joint. The outer nut of the joint is connected to the other end of the conduit, and the other end of the conduit mates with the spherical end of the ball joint. The ball joint can rotate in six degrees of freedom in the outer nut.

[0035] The left and right mounting parts are secured to the outer nut of the connector via a hook-shaped clamp assembly. The cylindrical end of the ball connector extends out of the outer nut of the connector, thereby limiting the movement between the ball connector and the outer nut of the connector.

[0036] The movable connector includes a first mounting base, a second mounting base, and a rotating shaft. The first mounting base and the second mounting base are respectively mounted on the left mounting component and the right mounting component.

[0037] Mounting holes are provided on the side of the first mounting base and the side of the second mounting base. The rotating shaft is movably sleeved inside the mounting holes, and limit plates are fixedly installed on both the left and right ends of the rotating shaft.

[0038] The hook-shaped clamp assembly includes a mounting plate and a mounting brace, which are respectively mounted on the left mounting component and the right mounting component.

[0039] The mounting plate has hook-shaped parts on its side, and a control plate is movably mounted on the surface of the mounting support. A ring is movably sleeved in the middle of the control plate, and a special-shaped spring is movably sleeved on the surface of the mounting support.

[0040] The two ends of the irregularly shaped spring are fixedly connected to the inside of the control panel and the surface of the left mounting piece, respectively.

[0041] The hook-shaped part of the mounting plate is fastened by pressing the control plate.

[0042] The diameter of the slotted hole is 0.05-0.1mm larger than the outer diameter of the nut on the outer sleeve of the connector. The diameter of the fastening slot is 0.06-0.1mm larger than the diameter of the cylindrical end of the ball joint. The length of the cylindrical end of the ball joint extending beyond the nut on the outer sleeve of the connector is 17-27mm.

[0043] The movable connector 6 includes a first mounting base 61, a second mounting base 62, and a rotating shaft 63. Mounting holes are provided on the side of the first mounting base 61 and the side of the second mounting base 62. Limiting circular plates are fixedly installed at both ends of the rotating shaft 63, and the rotating shaft 63 is movably sleeved inside the mounting holes.

[0044] The hook-shaped clamp assembly 5 includes a mounting plate 51 and a mounting support 52. The bottom surface of the mounting plate 51 is fixedly mounted on the surface of the right mounting member 2, and the bottom of the mounting support 52 is fixedly mounted on the surface of the left mounting member 1. The side of the mounting plate 51 is provided with hook-shaped parts. A control plate 53 is movably mounted on the surface of the mounting support 52. A ring buckle 54 is movably sleeved in the middle of the control plate 53. A special-shaped spring 55 is movably sleeved on the surface of the mounting support 52. The two ends of the special-shaped spring 55 are fixedly connected to the inside of the control plate 53 and the surface of the left mounting member 1, respectively.

[0045] Working principle: By designing and manufacturing a ball joint self-positioning device, the device uses the outer nut of the joint as a reference to realize the automatic positioning and constraint of the joint's spatial position, ensuring the consistency of the joint's spatial position during conduit filing, the first round of welding, and the second round of welding. This tooling also quantifies the deformation of the conduit welding, providing a target for on-site operators to perform cold alignment of the conduit.

[0046] Implementation steps:

[0047] First, mate the groove 3 of the designed tooling fixture with the outer nut of the connector. Then, mate the ball joint with the fastening groove 4. Finally, put the ring 54 onto the hook-shaped part of the mounting plate 51, and then press down the control plate 53 to tighten it, so that the operator can easily operate the ball joint.

[0048] This invention discloses a self-positioning device for the production of spherical connectors for aerospace liquid engines, relating to the field of liquid oxygen / kerosene engine conduit production technology. It includes a left mounting component and a right mounting component, both with internal grooves and fastening grooves on their mating surfaces. A hook-shaped clamp assembly is fixedly connected to the top of the right mounting component, and a movable connector is fixedly connected to its bottom. This patent designs and manufactures a self-positioning device for spherical connectors. Using the connector outer nut as a reference, this device achieves automatic positioning and constraint of the conduit connector's spatial position, ensuring consistency in spatial position during conduit filing, the first round of welding, and the second round of welding. This tooling also quantifies the deformation during conduit welding, providing a target for on-site operators during cold alignment of the conduit.

[0049] The production process of liquid rocket engine conduits involves numerous spherical joints. Conduits with spherical joints typically require at least two welding rounds to complete production. The sealing surface that mates with the spherical joint is a sphere. The spherical mating parts have five degrees of freedom in space. This high degree of freedom makes it difficult to ensure consistent spatial positioning of the joint during conduit repair, the first welding round, and the second welding round. This results in the need for repeated adjustments to the joint's spatial position, leading to time-consuming and labor-intensive processes and a longer conduit production cycle.

[0050] This tooling uses the outer nut of the joint as a reference to achieve automatic positioning and constraint of the joint's spatial position, ensuring the consistency of the joint's spatial position during conduit filing, the first round of welding, and the second round of welding. This tooling also quantifies the deformation of the conduit welding, providing on-site operators with a target for cold straightening of the conduit.

[0051] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A self-positioning device for manufacturing ball-shaped connectors for aerospace liquid engines, characterized in that, Includes left mounting bracket (1), right mounting bracket (2), and ball-shaped connector type conduit. The left mounting part (1) and the right mounting part (2) are both provided with a sleeve groove (3), and the mating surfaces of the left mounting part (1) and the right mounting part (2) are both provided with a fastening groove (4). The top of the right mounting part (2) is fixedly connected with a hook-shaped clamp assembly (5), and the left mounting part (1) and the right mounting part (2) are locked together by the hook-shaped clamp assembly (5). The bottom of the right mounting part (2) is fixedly connected with a movable connector (6), and the opening and closing between the left mounting part (1) and the right mounting part (2) is realized. Ball-type conduits include a conduit, a connector sleeve nut, and a ball-shaped connector. One end of the conduit is fixedly connected to the engine, and the other end of the conduit matches the shape of the ball joint. The spherical end of the ball joint is placed in the outer nut of the joint, and the cylindrical end of the ball joint extends out of the outer nut of the joint. The outer diameter of the cylindrical end is smaller than the hole diameter on one side of the outer nut of the joint. The outer nut of the joint is connected to the other end of the conduit, and the other end of the conduit mates with the spherical end of the ball joint. The ball joint can rotate in six degrees of freedom in the outer nut. The left mounting piece (1) and the right mounting piece (2) are clamped onto the outer nut of the connector by the hook clamp assembly (5). The cylindrical end of the ball connector extends out of the outer nut of the connector, thereby achieving the limiting between the ball connector and the outer nut of the connector.

2. The self-positioning device for producing ball-shaped connectors for aerospace liquid engines according to claim 1, characterized in that, The movable connector (6) includes a first mounting base (61), a second mounting base (62), and a rotating shaft (63). The first mounting base (61) and the second mounting base (62) are respectively mounted on the left mounting component (1) and the right mounting component (2).

3. The self-positioning device for producing ball-shaped connectors for aerospace liquid engines according to claim 2, characterized in that, Mounting holes are provided on the side of the first mounting base (61) and the side of the second mounting base (62). The rotating shaft (63) is movably sleeved inside the mounting hole, and limit plates are fixedly installed on both the left and right ends of the rotating shaft (63).

4. The self-positioning device for producing ball-shaped connectors for aerospace liquid engines according to claim 1, characterized in that, The hook-shaped clamp assembly (5) includes a mounting plate (51) and a mounting support (52), which are respectively mounted on the left mounting member (1) and the right mounting member (2).

5. A self-positioning device for the production of spherical connectors for aerospace liquid engines according to claim 4, characterized in that, The mounting plate (51) has a hook-shaped part on its side, and a control plate (53) is movably mounted on the surface of the mounting support (52). A ring buckle (54) is movably sleeved in the middle of the control plate (53), and a special-shaped spring (55) is movably sleeved on the surface of the mounting support (52).

6. A self-positioning device for producing ball-shaped connectors for aerospace liquid engines according to claim 5, characterized in that, The two ends of the irregular spring (55) are fixedly connected to the inside of the control plate (53) and the surface of the left mounting part (1), respectively.

7. A self-positioning device for the production of ball-shaped connectors for aerospace liquid engines according to claim 5, characterized in that, The ring (54) is fitted onto the hook-shaped part of the mounting plate (51) and is fastened by pressing the control plate (53).

8. A self-positioning device for the production of ball-shaped connectors for aerospace liquid engines according to claim 1, characterized in that, The diameter of the slot (3) is 0.05-0.1mm larger than the outer diameter of the nut on the outer sleeve of the connector.

9. A self-positioning device for the production of ball-shaped connectors for aerospace liquid engines according to claim 1, characterized in that, The diameter of the fastening groove (4) is 0.06-0.1 mm larger than the diameter of the cylindrical end of the ball joint.

10. A self-positioning device for the production of ball-shaped connectors for aerospace liquid engines according to claim 1, characterized in that, The length of the cylindrical end of the ball joint extending beyond the outer nut of the joint sleeve is 17-27mm.

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