Guiding constraint structure suitable for zero-gravity environment
The combined structure of the limit constraint assembly and the positioning bushing solves the problem of connecting and separating objects operated by astronauts in a zero-gravity environment, achieves fast and reliable operation, reduces the difficulty of extravehicular operations, and improves work efficiency.
Patent Information
- Application Number
- CN202422998086.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-12-04
AI Technical Summary
In a zero-gravity environment, it is difficult for astronauts to quickly and reliably connect and separate two operating objects, and existing technologies cannot effectively solve the guidance and constraint problems of extravehicular operations.
A combination structure of a limit constraint component and a positioning bushing is adopted. The limit constraint component consists of an oblique cone guide frame and a limit spring. The positioning bushing is an I-shaped structure. The oblique cone guide frame provides bidirectional guidance, and the limit spring provides constraint force to achieve rapid connection and separation of the operation object.
It enables astronauts to quickly and reliably complete the connection and separation of operation objects in a zero-gravity environment, reduces the difficulty of extravehicular operations, and improves work efficiency.
Smart Images
Figure CN223408137U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of space maintenance and relates to a guide constraint structure suitable for a zero-gravity environment. Background Art
[0002] In view of the increase in maintenance tasks for extravehicular equipment on the space station, maintenance tools need to have the functions of easy operation, rapid guidance, and constraint fixation, so that the two objects being operated can achieve a rapid constraint relationship, making it convenient for astronauts to quickly carry out connection and separation operations in orbit.
[0003] Since there is no gravity outside the cabin, astronauts can quickly carry out connection and separation operations in orbit. This requires solving the structural form of two object guidance and constraints that astronauts can conveniently operate while wearing spacesuits outside the cabin, and solving the technical problem of achieving fast and reliable connection and separation of the two operating objects. Utility Model Content
[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the existing technology, to propose a guidance and constraint structure suitable for a zero-gravity environment, to solve the technical problem of astronauts realizing the rapid and reliable connection and separation of two operation objects in an extravehicular environment, and to improve the work efficiency of astronauts in an extravehicular environment by reducing the difficulty of extravehicular operations.
[0005] The solution of this utility model is:
[0006] A guide constraint structure suitable for a zero-gravity environment, comprising a position limiting constraint component and a positioning bushing;
[0007] The limit constraint assembly includes an oblique cone guide frame and a limit spring; the oblique cone guide frame is a horizontal U-shaped frame, and the "|" parts on both sides of the U-shaped frame opening are respectively integrated with outward-expanding inclined surfaces to form a conical guide opening; height guide limit surfaces are provided on the inner walls of the "|" parts on both sides of the U-shaped frame;
[0008] The limit spring is a U-shaped piece, with a semicircular protrusion designed on each side of the "|" part of the U-shaped piece. The two semicircular protrusions are symmetrically positioned and the protrusions are opposite to each other. The limit spring is fixed inside the oblique cone guide frame and is located below the height guide limit surface.
[0009] The positioning bushing adopts an integrated design, with a hollow cylindrical structure in the middle, and circular ring structures above and below the hollow cylindrical structure. The inner hollow circle diameter of the circular ring structure is the same as the inner diameter of the hollow cylindrical structure, and the two opposite sides of the outer edge of the upper circular ring structure are flattened; two symmetrical vertical grooves are processed on the outer wall of the hollow cylindrical structure, and the grooves match the size of the semicircular protrusions of the limiting spring, and the grooves and the corresponding flattened parts are located on the same side.
[0010] Preferably, a mounting hole is designed at the root of the limiting spring, and the limiting spring is mounted on the oblique cone guide frame through the mounting hole.
[0011] Preferably, in actual applications, when it is necessary to connect two operation objects, the limit constraint component is fixed on one operation object, and the positioning bushing is fixed on the other operation object.
[0012] Preferably, the oblique cone guide frame provides a guiding function with two degrees of freedom.
[0013] Preferably, the positioning bushing is formed by splicing two parts of the same structure, and the cross-section of the positioning bushing is an "I" shape.
[0014] Preferably, the hollow cylindrical structure in the middle of the positioning bushing is a height limit section. When connected, the upper annular structure is located above the height guide limit surface of the oblique cone guide frame, and the hollow cylindrical structure is slidably matched with the lower surface of the height guide limit surface of the oblique cone guide frame.
[0015] Preferably, there is a gap between the hollow columnar structure and the lower surface of the height guide limit surface of the oblique cone guide frame.
[0016] Preferably, the central angle corresponding to the flattened portion on each side of the upper circular ring structure is 90°.
[0017] The beneficial effects of the present invention compared with the prior art are:
[0018] (1) The utility model effectively realizes the rapid positioning of two operating objects through a unique oblique cone guide structure;
[0019] (2) The utility model effectively realizes the connection between the two operating objects through a unique limit constraint structure, and provides a constraint force through the spring limit matching to prevent the two operating objects from floating away; at the same time, the two operating objects can be separated after overcoming the spring deformation constraint force. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of a guidance constraint structure suitable for a zero-gravity environment;
[0021] Figure 2 It is a schematic diagram of the structure of the limit constraint component;
[0022] Figure 3 The width guide limit surface form and dimension drawing of the oblique cone guide frame;
[0023] Figure 4 This is the form and dimension drawing of the height guide limit surface of the oblique cone guide frame;
[0024] Figure 5 The form and size of the limit spring;
[0025] Figure 6 Schematic diagram of the positioning bushing
[0026] Figure 7 This is the dimension drawing of the positioning bushing;
[0027] Figure 8 A schematic diagram of the matching of the positioning bushing and the limit constraint assembly;
[0028] Figure 9 Schematic diagram of the limiting action surface of the positioning bushing and the limiting constraint assembly. DETAILED DESCRIPTION
[0029] The present invention will be further described below in conjunction with the accompanying drawings.
[0030] This utility model proposes a guidance and restraint structure suitable for zero-gravity environments, which is an important guarantee for ensuring that astronauts can quickly and reliably connect and separate two objects while wearing spacesuits outside the cabin. It enables astronauts to quickly and reliably connect and separate two objects in a zero-gravity environment outside the cabin, improving work efficiency while reducing the difficulty of extravehicular operations.
[0031] The utility model discloses a guide constraint structure suitable for a zero-gravity environment, which consists of two parts: a position limiting constraint component and a positioning bushing.
[0032] 1) Limit constraint components
[0033] The limit constraint assembly consists of an oblique cone guide frame and a limit spring;
[0034] The oblique cone guide frame is a horizontal U-shaped frame with outward-sloping, integrated slopes on either side of the U-shaped opening, forming a tapered guide opening. Height-guided stop surfaces are located on the inner walls of the "|" sections on both sides of the U-shaped frame. The oblique cone guide frame provides two degrees of freedom (DOF) guidance: two outward-facing slopes at the guide opening provide width guidance, while a downward-sloping cone provides height guidance. The oblique cone guide frame achieves two degrees of freedom through the specific structure of the width-guided stop surfaces and the height-guided stop surfaces.
[0035] The limit spring is a U-shaped piece, and a semicircular protrusion is designed on each side of the "|" part of the U-shaped piece. The two semicircular protrusions are symmetrically positioned and the protrusions are opposite in direction. The limit spring is fixed inside the oblique cone guide frame and is located below the height guide limit surface. The limiting function is achieved by matching the deformation elastic force of the limit spring with the limit groove of the positioning bushing. A mounting hole is designed at the root of the limit spring and is installed on the oblique cone guide frame.
[0036] 2) Positioning bushing.
[0037] The positioning bushing is formed by splicing two "I"-shaped semicircular parts of the same structure. After splicing, the middle part is a hollow cylindrical structure. The upper and lower parts of the hollow cylindrical structure are both annular structures. The diameter of the inner hollow circle of the annular structure is the same as the inner diameter of the hollow cylindrical structure. The two opposite sides of the outer edge of the upper annular structure are flattened. Two symmetrical vertical grooves are processed on the outer wall of the hollow cylindrical structure. The grooves match the size of the semicircular protrusions of the limiting spring, and the grooves and the corresponding flattened parts are located on the same side. The middle area of the "I" shape is the height limit surface, which is slidably matched with the height guide limit surface of the oblique cone guide frame; the planes on both sides of the upper end face of the "I" shape are width limit surfaces, which are slidably matched with the width guide limit surface of the oblique cone guide frame; the limit groove in the middle of the "I" shape is limited and matched with the semicircular protrusions designed on both sides of the limiting spring, and the semicircular protrusions are constrained in the limit groove by the elasticity of the spring.
[0038] Example:
[0039] The structure of this embodiment consists of two parts: a limit constraint component and a positioning bushing. Figure 1 shown.
[0040] 1) Limit constraint components
[0041] The limit constraint assembly consists of an oblique cone guide frame and a limit spring, such as Figure 2 shown.
[0042] The oblique cone guide frame realizes directional guidance with two degrees of freedom through the specific structural form of the width guide limit surface and the height guide limit surface; the width guide limit surface uses two outward inclined surfaces for guidance, the maximum opening size is 51mm, the final guide surface is 30mm, and the width guide limit surface is at a 60° deflection angle. Figure 3 shown.
[0043] The height guide limit surface adopts an oblique cone slope for guidance, the minimum surface is 2.5mm, and the final guide surface is 10.5mm. Figure 4 shown.
[0044] The limit spring is designed as a "U"-shaped piece. A semicircular protrusion of R1.6 is designed on both sides of the "U". The distance between the two sides of the "U" is 25mm, which matches the limit groove of the positioning bushing. The root of the limit spring is designed with a mounting hole, which is installed on the oblique cone guide frame. Figure 5 shown.
[0045] 2) Positioning bushing.
[0046] The positioning bushing is formed by splicing two "I"-shaped semicircular parts of the same structure. The middle area of the "I" shape has a control dimension of 13.5mm as the height limit surface, which is slidably matched with the height guide limit surface of the oblique cone guide frame of 10.5mm, and a 3.5mm gap is reserved; the plane control dimension of 30mm on both sides of the upper end face of the "I" shape is the width limit surface, which is slidably matched with the width guide limit surface of 30mm of the oblique cone guide frame; the middle of the "I" shape is a cylinder with a diameter of 25mm, and a limit groove is set on the side of the width guide limit surface. The limit groove is formed by splicing two parts, and is triangular in shape with a groove depth of 1.5mm. A semicircle of R1.6 is designed on both sides of the limit spring for limit matching. The semicircular protrusion is constrained in the limit groove by the elasticity of the spring. Figure 6 、 Figure 7 shown.
[0047] 3) Operation process
[0048] A guide constraint structure suitable for zero-gravity environment is fixed on two operating objects, the limit constraint component is fixed on the first operating object, and the positioning bushing is fixed on the second operating object. Figure 8 shown.
[0049] Under the action of force F1, the “I” shaped middle area of the positioning bushing is inserted into the guide opening of the oblique cone guide frame, such as Figure 9 As shown in (a), under the matching of the width guide limit surface and the height guide limit surface of the oblique cone guide frame, the semicircular protrusion on the side of the limit spring 2 enters the limit groove of the positioning bushing, and finally realizes the guide constraint of the two operating objects, as shown in FIG. Figure 9 As shown in (b).
[0050] Under the action of force F2, the limiting groove of the positioning bushing moves outward, and the limiting groove shape compresses the semicircular protrusions on both sides of the limiting spring to lift up. When the semicircular protrusions on both sides of the limiting spring leave the limiting groove, the positioning bushing can be pushed out of the oblique cone guide frame, and finally the separation of the two operating objects is achieved, such as Figure 9 As shown in (c).
[0051] The contents not described in detail in the specification of this utility model belong to the common knowledge of professional and technical personnel in this field.
Claims
1. A guidance and restraint structure suitable for a zero-gravity environment, characterized by: Including limit restraint components and positioning bushings; The limit constraint assembly includes an oblique cone guide frame and a limit spring; the oblique cone guide frame is a horizontal U-shaped frame, and the "|" parts on both sides of the U-shaped frame's open end are respectively integrated with outward-expanding inclined surfaces to form a conical guide opening; height guide limit surfaces are provided on the inner walls of the "|" parts on both sides of the U-shaped frame; The limit spring is a U-shaped piece with a semicircular protrusion designed on each side of the "|" part of the U-shaped piece. The two semicircular protrusions are symmetrically positioned and face each other. The limit spring is fixed inside the oblique cone guide frame and is located below the height guide limit surface. The positioning bushing adopts an integrated design, with a hollow cylindrical structure in the middle, and an annular structure above and below the hollow cylindrical structure. The inner hollow circle diameter of the annular structure is the same as the inner diameter of the hollow cylindrical structure, and the two opposite sides of the outer edge of the upper annular structure are flattened; Two symmetrical vertical grooves are processed on the outer wall of the hollow cylindrical structure. The grooves match the size of the semicircular protrusions of the limiting spring, and the grooves and the corresponding flattened parts are located on the same side.
2. The guidance and restraint structure suitable for a zero-gravity environment according to claim 1, characterized in that: A mounting hole is designed at the root of the limiting spring, and the limiting spring is mounted on the oblique cone guide frame through the mounting hole.
3. The guidance and restraint structure suitable for a zero-gravity environment according to claim 1, characterized in that: In actual applications, when it is necessary to connect two operation objects, the limit constraint component is fixed on one operation object, and the positioning bushing is fixed on the other operation object.
4. The guidance and restraint structure suitable for a zero-gravity environment according to claim 1, characterized in that: The oblique cone guide frame provides a guiding function with two degrees of freedom.
5. The guidance and restraint structure suitable for a zero-gravity environment according to claim 1, characterized in that: The positioning bushing is formed by splicing two parts of the same structure, and the cross section of the positioning bushing is an "I" shape.
6. The guidance and restraint structure suitable for a zero-gravity environment according to claim 5, characterized in that: The hollow cylindrical structure in the middle of the positioning bushing is the height limit section. When connected, the upper circular ring structure is located above the height guide limit surface of the oblique cone guide frame, and the hollow cylindrical structure is slidably matched with the lower surface of the height guide limit surface of the oblique cone guide frame.
7. The guidance and restraint structure suitable for a zero-gravity environment according to claim 6, characterized in that: There is a gap between the hollow columnar structure and the lower surface of the height guide limiting surface of the oblique cone guide frame.
8. The guidance and restraint structure suitable for a zero-gravity environment according to claim 1, characterized in that: The central angle corresponding to the flattened portion on each side of the upper circular structure is 90°.