Cabin butt joint detection tool
By using mounting bases and levels to detect the included angle during rocket assembly, the problem of cable entanglement in laser detection equipment was solved, enabling high-precision, low-cost cabin docking, simplifying the production process and improving safety.
Patent Information
- Application Number
- CN202520128003.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-01-20
AI Technical Summary
During the assembly of rockets, existing laser inspection equipment is prone to cable entanglement and tearing, leading to safety hazards and reduced inspection accuracy. Furthermore, optical instruments are expensive and difficult to maintain.
Mounting base one and mounting base two are used to connect to the lower and upper compartments respectively. A dual-channel digital level is used to detect the angle between the mounting base and the horizontal plane to ensure precise alignment of the upper and lower compartments, eliminating the need for optical instruments and reducing the use of cables.
It achieved high-precision, low-cost cabin docking, simplified the production process, reduced maintenance costs, and improved safety and production efficiency.
Smart Images
Figure CN223649912U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of rocket assembly technology, and specifically relates to a cabin docking and testing tool. Background Technology
[0002] Currently, the rocket assembly process involves two compartments (referred to as the lower compartment and the upper compartment, such as...) Figure 6 , 7 The docking angles (as shown) are often directly detected using optical instruments to determine the corresponding position angles. After assembly, as... Figure 8 As shown, the lower chamber serves as the reference chamber, with a laser emitter used for the detection surface; the upper chamber is the relative chamber, with a laser receiver used for the detection surface. Since both the laser emitter and receiver have power and communication cables, cable tangling and tearing are inevitable during use, posing significant safety hazards for equipment operation and maintenance. Furthermore, the currently used laser receivers are limited by their large size and the narrow mounting surface of the upper chamber they are connected to are prone to mechanical wear, leading to a continuous decrease in detection accuracy. In addition, the manufacturing and maintenance costs of optical instruments are high. Utility Model Content
[0003] To address the above problems, this utility model provides a tooling for cabin docking inspection.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A docking inspection fixture includes a first mounting base, a second mounting base, and two levels. The first mounting base is fitted against the outer wall of the lower cabin and is connected to two convex shafts on the lower cabin via connectors, and is positioned at the midpoint of the line connecting the two convex shafts along the outer wall. The second mounting base is used to mate with the guide groove of the upper cabin. The first and second mounting bases are located on the same side. The two levels are respectively mounted on the first and second mounting bases and are used to detect the angles between the first and second mounting bases and the horizontal plane.
[0006] Furthermore, the mounting base is a rectangular plate, with its outer surface being a plane and its inner surface being an arc-shaped surface that matches the outer wall of the lower compartment; both ends of the mounting base are connected to a connector, and the other end of the connector is provided with a U-shaped claw, which can cooperate with the convex shaft on the lower compartment.
[0007] Furthermore, the connector is an arc-shaped rod that matches the outer wall of the lower cabin.
[0008] Furthermore, the second mounting base is a rectangular flat plate. The outer side of the second mounting base is a plane, and a limiting block is provided in the middle of the inner side. The limiting block can be inserted into the guide groove of the upper cabin. The shape of the limiting block and the guide groove is an isosceles trapezoid.
[0009] Furthermore, the inner wall of the guide groove is made of magnetic metal, and neodymium magnets are provided on the bottom surface and side wall of the limiting block to attract and fix the limiting block in the guide groove.
[0010] Furthermore, both mounting base one and mounting base two are made of rectangular magnetic metal plates.
[0011] Furthermore, the back of the level is provided with a magnetic block for adhering to the outer surfaces of mounting base one and mounting base two.
[0012] Furthermore, the level is a dual-channel digital level with a detection accuracy of <0.005°.
[0013] The technological advancements achieved by this invention compared to existing technologies are as follows:
[0014] This invention features a mounting base 1 located at the midpoint of the line connecting two convex shafts on the outer wall of the lower compartment, and a mounting base 2 located at the guide groove of the upper compartment. A level is installed on both mounting bases 1 and 2 to measure the angle between them and the horizontal plane. This ensures the angle between the line connecting the two convex shafts of the lower compartment and the normal to the bottom surface of the guide groove of the upper compartment meets assembly requirements, ultimately achieving precise docking between the upper and lower compartments. This invention offers advantages such as simple structure, convenient and quick operation, high stability, low cost, low maintenance cost, and high docking accuracy, making it suitable for widespread application. Attached Figure Description
[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0016] In the attached diagram:
[0017] Figure 1 An application status diagram of a cabin docking inspection fixture provided in an embodiment of this utility model;
[0018] Figure 2 This is a schematic diagram showing the installation of tooling 1 on the lower compartment and tooling 2 on the upper compartment in this embodiment of the present invention;
[0019] Figure 3 This is a schematic diagram of the tooling 1 in an embodiment of the present invention;
[0020] Figure 4 This is a schematic diagram of the tooling 2 in an embodiment of the present invention;
[0021] Figure 5 This is a schematic diagram of the detection angle in the projection plane after the upper and lower compartments have docked.
[0022] Figure 6 This is a structural schematic diagram of the lower hull;
[0023] Figure 7 This is a structural schematic diagram of the upper cabin;
[0024] Figure 8 This is a diagram showing the state of the upper and lower hulls after docking.
[0025] Figure 9 This is an external view of the level in an embodiment of this utility model;
[0026] In the picture:
[0027] 1-Mounting base one; 2-Mounting base two; 3-Level; 4-Connector; 5-U-shaped claw; 6-Limit block;
[0028] 01-Lower hull; 02-Upper hull; 03-Maglev shaft; 04-Guide groove; 05-Aviation plug; 06-Rotor. Detailed Implementation
[0029] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this utility model will be described below with reference to the accompanying drawings.
[0030] like Figure 1 , Figure 2 As shown in the figure, an embodiment of this utility model provides a cabin docking inspection fixture, including a mounting base 1, a mounting base 2, and two levels 3. The mounting base 1 is fitted against the outer wall of the lower cabin 01. The mounting base 1 is connected to two convex shafts 03 on the lower cabin 01 via connectors 4 and is positioned at the midpoint of the line connecting the two convex shafts 03 along the outer wall. The mounting base 2 is used to cooperate with the guide groove 04 on the outer wall of the upper cabin 02. The mounting base 1 and the mounting base 2 are arranged on the same side. The two levels 3 are respectively mounted on the mounting base 1 and the mounting base 2, and are used to detect the angles between the mounting base 1 and the mounting base 2 and the horizontal plane. The difference between the two detected angles is used to determine whether the upper and lower cabins are docked correctly. During assembly, the lower cabin 01 and the upper cabin 02 are docked in a horizontal state. Figure 9 As shown, the level 3 is a purchased dual-channel digital level (with the long side direction as the X-axis and the wide side direction as the Y-axis). The specific testing method is as follows:
[0031] like Figure 5As shown, after the upper and lower compartments are docked, the axes of the two convex trunnions coincide with the diameter of the lower compartment in the axial projection plane, forming a virtual line. The guide groove of the upper compartment is an isosceles trapezoidal groove, and the normal of its bottom surface coincides with the diameter of the upper compartment, forming another virtual line. The two virtual lines have an included angle θ in the axial projection plane, which is the process angle that needs to be achieved when the upper and lower compartments are docked. The level on mounting base 1 displays an angle θ1 along the X-axis (parallel to the wide side of the level), and the level on mounting base 2 displays an angle θ2 along the X-axis (parallel to the wide side of the level). If the assembly is correct, θ = |θ2 - θ1| (for easier reading, when placing the lower hull, θ1 can be set to 0, θ = |θ1|), which meets the process requirements. If |θ2 - θ1| ≠ θ (when θ1 = 0, θ ≠ |θ2|), then the upper hull should be rotated relative to the lower hull around its axis to make θ = |θ2 - θ1| (when θ1 = 0, θ = |θ2|).
[0032] In specific embodiments of this utility model, such as Figure 3 As shown, the mounting base 1 is a rectangular flat plate. The outer surface of the mounting base 1 is flat, and the inner surface is an arc-shaped surface that matches the outer wall of the lower compartment 01. Both ends of the mounting base 1 are connected to connecting members 4. The other end of the connecting member 4 is provided with a U-shaped claw 5, which can cooperate with the convex shaft 03 on the lower compartment 01. The connecting member 4 is an arc-shaped rod that matches the outer wall of the lower compartment 01. By using the U-shaped claws at the ends of the two arc-shaped rods to hold the two convex shafts, the two convex shafts can be symmetrically arranged on both sides of the mounting base 1.
[0033] In specific embodiments of this utility model, such as Figure 4 As shown, the mounting base 2 is a rectangular flat plate. The outer surface of the mounting base 2 is a plane, and a limiting block 6 is provided in the middle of the inner surface. The limiting block 6 can be inserted into the guide groove 04 of the upper compartment 02. The limiting block 6 and the guide groove 04 are both isosceles trapezoids. The inner wall of the guide groove 04 is made of magnetic metal. Rubidium magnets are provided on the bottom surface and side walls of the limiting block 6 to attract and fix the limiting block 6 within the guide groove 04, ensuring that the mounting base 2 is stably installed on the upper compartment 02. At this time, the outer plane of the mounting base 2 coincides with the plane containing the outer surfaces of the two side walls of the guide groove, and the normal to the outer plane of the mounting base 2 is perpendicular to the axis of the lower compartment.
[0034] In specific manufacturing, both mounting base 1 and mounting base 2 are made of rectangular magnetic metal plates. The back of the level 3 is equipped with a magnetic block for adhering to the outer surfaces of mounting base 1 and mounting base 2. The level 3 can be a digital level or a mechanical level. When high accuracy is not required, a graduated mechanical level can be used, further reducing maintenance costs. The level 3 is a dual-channel digital level (e.g., Ruifen DMI820, Jingyan TTL-90S), which is convenient to read, accurate, and has a detection precision of <0.005°, fully meeting the technical requirement of controlling the docking error of the upper and lower hulls within the range of θ±0.5°. The relative detection accuracy of this invention is <0.5%, fully meeting the process requirements.
[0035] In addition, to improve assembly accuracy, ensure smooth production, and form a closed-loop management system, the level used in this utility model should be measured regularly, the coaxiality of the U-shaped claws on both sides of the mounting base should be checked regularly, the parallelism between the lower cabin axis and the outer plane of the mounting base should be checked regularly, and the parallelism between the trapezoidal bottom surface of the inner limit block of the mounting base and the outer plane of the mounting base should be checked regularly.
[0036] In summary, this invention boasts advantages such as simple structure, convenient and quick operation, and high docking accuracy. During operation, there are no unnecessary suspended power or communication cables, which is beneficial for safe production and equipment maintenance. This invention eliminates the need for optical instruments and calibration processes, simplifying the production process and improving efficiency. Manufacturing costs are low; a dual-channel digital level is purchased externally, and the remaining components are simple to manufacture, effectively reducing the cost of customized inspection systems. Furthermore, this invention offers high portability; only the corresponding inspection fixture needs to be designed and manufactured according to the object being inspected, eliminating the need for customized optical inspection systems for assembly processes.
[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.
Claims
1. A tooling for inspecting cabin docking, characterized in that: The system includes a first mounting base, a second mounting base, and two levels. The first mounting base is fitted against the outer wall of the lower compartment and is connected to two convex shafts on the lower compartment via connectors, and is positioned at the midpoint of the line connecting the two convex shafts along the outer wall. The second mounting base is used to mate with the guide groove of the upper compartment. The first and second mounting bases are located on the same side. The two levels are respectively mounted on the first and second mounting bases and are used to detect the angles between the first and second mounting bases and the horizontal plane.
2. The cabin docking inspection fixture according to claim 1, characterized in that: The mounting base is a rectangular plate. The outer side of the mounting base is a plane, and the inner side is an arc-shaped surface that matches the outer wall of the lower compartment. Both ends of the mounting base are connected to the connecting parts. The other end of the connecting parts is provided with a U-shaped claw, which can cooperate with the convex shaft on the lower compartment.
3. The cabin docking inspection fixture according to claim 2, characterized in that: The connector is an arc-shaped rod that matches the outer wall of the lower cabin.
4. The cabin docking inspection fixture according to claim 1, characterized in that: The second mounting base is a rectangular flat plate. The outer side of the second mounting base is a plane, and the middle of the inner side is provided with a limiting block. The limiting block can be inserted into the guide groove of the upper cabin. The shape of the limiting block and the guide groove is an isosceles trapezoid.
5. The cabin docking inspection fixture according to claim 4, characterized in that: The inner wall of the guide groove is made of magnetic metal, and neodymium magnets are provided on the bottom surface and side wall of the limiting block to attract and fix the limiting block in the guide groove.
6. A cabin docking inspection fixture according to any one of claims 1-5, characterized in that: Both mounting base one and mounting base two are made of rectangular magnetic metal plates.
7. The cabin docking inspection fixture according to claim 6, characterized in that: The back of the level is equipped with a magnetic block for attaching to the outer surfaces of mounting base one and mounting base two.
8. The cabin docking inspection fixture according to claim 7, characterized in that: The level is a dual-channel digital level with a detection accuracy of <0.005°.