Translation and rotation combined door for launching platform
The door mechanism addresses hinge deformation and corrosion issues by incorporating rolling bearings for smooth translation and rotation, ensuring reliable operation and flexible installation in harsh conditions.
Patent Information
- Application Number
- CN202510775474.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-11
- Publication Date
- 2025-07-15
AI Technical Summary
Traditional hinge structures are prone to corrosion and wear in harsh environments, resulting in doors and windows being stuck and installation is limited, which cannot meet the needs of use under specific conditions.
The translation and rotational combination door structure is adopted to realize the translation and rotational movement of the door through the connecting rod mechanism of the door hinge, and use rolling bearings to improve reliability and flexibility.
Maintain good opening and closing effect and reliability in harsh environments, adapt to different installation conditions, and reduce the external space requirements of the door frame.
Smart Images
Figure CN120312066A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of mechanical mechanisms for opening and closing door leaves, and particularly relates to a translational and rotational combined door for a launch platform. Background Art
[0002] Traditional doors and door frames are usually fixed with hinges. When the door needs to be opened, pushing the opposite side of the hinge can rotate the door open. Although the traditional hinge structure is simple, after long-term opening and closing, the hinge is prone to deformation, affecting the opening and closing and sealing effects; especially when used outdoors and in the sea salt mist, the harsh environment corrodes and wears the hinge for a long time, which is extremely likely to cause the doors and windows to get stuck. In addition, due to the fact that the traditional hinge only has rotational movement, it is restricted by the edge of the door frame during installation, and the installation conditions are limited, and it cannot be used under certain specific conditions. Summary of the Invention
[0003] To solve the above problems, the invention provides a translational and rotational combined door for a launch platform.
[0004] The purpose of the invention is achieved in the following way: A translational and rotational combined door for a launch platform includes a door 2 and a door frame 3. The door 2 and the door frame 3 are connected by a door hinge 1. The door hinge 1 includes a bottom plate 18 fixedly connected to the inner side of the door frame 3, and two supports 4 fixedly connected to the inner side of the door 2. One end of each front link 5 is rotatably connected to one support 4, the other end of each front link 5 is rotatably connected to one end of a rear link 7, and the other end of each rear link 7 is rotatably connected to the bottom plate 18, forming two sets of link mechanisms. At each rotational connection, two connecting segments are rotatably connected through a shaft structure. The inner section of the shaft structure is rotatably connected to one connecting segment through a bearing 14. A pressing and positioning structure is arranged at the outer end of the shaft structure. The pressing and positioning structure presses the bearing 14 against this connecting segment, and the outer end of the shaft structure is connected to the other connecting segment through the pressing and positioning structure.
[0005] Further, two first connection ears are arranged at one end of the front link 5 at intervals. A first connection block extends from the top of the support 4. The first connection block at the top of the support 4 is located between the two first connection ears at the end of the front link 5. A small shaft 12 is arranged to pass through the first connection block and the two first connection ears. A bearing 14 is arranged on each side of the first connection block. The first connection block is fixedly connected to the outer ring of the bearing 14. The inner ring of the bearing 14 is fixedly connected to the outer circumference of the small shaft 12. A bushing 13 is arranged between the two sides of the small shaft 12 and each first connection ear respectively. The inner end of the bushing 13 abuts against the inner ring of the bearing 14. Both ends of the small shaft 12 extend out of the two sides of the first connection ears respectively and are fixedly connected to an end cap 10. The end cap 10 abuts against the outer end of the bushing 13.
[0006] Further, a limit seat 11 is fixedly connected to the top of the support 4. An arc-shaped limit hole is arranged on the limit seat 11. The arc-shaped limit hole is centered on the axis of the small shaft 12. A limit pin is slidably arranged in the arc-shaped limit hole. The limit pin is fixedly connected to the front link 5.
[0007] Further, one end of the front link 5 extends out of the second connection block. Two second connection ears are arranged at one end of the rear link 7 at intervals. The second connection block at the end of the front link 5 is located between the two second connection ears at the end of the rear link 7. A connecting rod 9 is arranged between the two sets of link mechanisms. The connecting rod 9 includes a central shaft 15. Both ends of the central shaft 15 respectively pass through the second connection blocks and the two second connection ears of the two sets of link mechanisms and are fixedly connected to an end cap 10. A central shaft sleeve 16 is sleeved outside the central shaft 15. A bearing 14 is arranged on each side of each second connection block. The second connection block is fixedly connected to the outer ring of the bearing 14. The inner ring of the bearing 14 is fixedly connected to the central shaft 15. A bushing 13 is arranged between the central shaft 15 and each second connection ear. One end of the bushing 13 abuts against the inner ring of the bearing 14, and the other end of the bushing 13 abuts against the end of the end cap 10 or the central shaft sleeve 16.
[0008] Further, a bending section 71 is arranged at one end of the rear link 7. An angle seat 6 is arranged on the outer side of the bending section 71, and a bottom support 8 is arranged on the inner side of the bending section 71. Both the angle seat 6 and the bottom support 8 are fixedly connected to the bottom plate 18. A bottom shaft 19 is arranged between the bending sections 71 of the two rear links 7. The bottom shaft 19 forms a plurality of stepped structures that taper towards the axis direction from the middle to both ends. Both ends of the bottom shaft 19 respectively pass through the bottom support 8, the rear link 7, and the angle seat 6. The bottom shaft 19 is rotatably connected to the bottom support 8. A bearing 14 is arranged on each side of the bending section 71. The bending section 71 is fixedly connected to the outer ring of the bearing 14. The inner ring of the bearing 14 is fixedly connected to the bottom shaft 19. A bushing 13 is arranged between the bottom shaft 19 and the angle seat 6. The inner ring of the bearing 14 is abutted by the bushing 13 or the stepped structure.
[0009] Further, the length of the bending section 71 is greater than or equal to the distance from the bottom shaft 19 to the inner wall of the closest door frame.
[0010] Compared with the prior art, in view of the problems existing in the traditional hinge that it cannot adapt to outdoor and harsh environments, has low reliability, and the external moving space of the door frame is limited and the traditional hinge cannot be used, the present invention adds link mechanisms to achieve translation and rotation. Rolling bearings are used at the hinge joints, and it can still rotate flexibly after multiple openings and closings, realizing high-reliability mechanism movement. Description of the Drawings
[0011] Figure 1 It is a schematic structural diagram when the translation-rotation combined door is closed; Figure 2 It is a schematic structural diagram when the translation-rotation combined door starts to translate and open initially; Figure 3 It is a schematic structural diagram when the translation-rotation combined door is fully opened; Figure 4 It is a schematic structural diagram of the door hinge; Figure 5 It is a cross-sectional view of the hinge joint of the support and the front link; Figure 6 It is a cross-sectional view of the front link - rear link hinge joint; Figure 7 It is a cross-sectional view of the rear link - bottom plate hinge joint.
[0012] Among them, door hinge 1, door 2, door frame 3, support 4, front link 5, angle seat 6, rear link 7, bottom support 8, connecting rod 9, end cap 10, limit seat 11, small shaft 12, bushing 13, bearing 14, middle shaft 15, middle shaft sleeve 16, bottom plate 18, bottom shaft 19. Specific embodiments
[0013] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0014] In the present invention, unless otherwise clearly defined and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.
[0015] As shown in the attached Figures 1-4 figures, a translation and rotation combined door for a launch platform includes a door 2 and a door frame 3. The door 2 and the door frame 3 are connected by a door hinge 1. The door hinge 1 includes a bottom plate 18 fixedly connected to the inner side of the door frame 3. The bottom plate 18 is a long plate, and two supports 4 fixedly connected to the inner side of the door 2. Each support 4 is a short plate, and the top of the short plate extends out a first connection block for rotational connection. One end of a front link 5 is rotatably connected to each support 4. The other end of each front link 5 is rotatably connected to one end of a rear link 7. The other end of each rear link 7 is rotatably connected to the bottom plate 18, forming two sets of link mechanisms. At each rotational connection, the two connection segments are rotatably connected through a shaft structure. The inner section of the shaft structure is rotatably connected to a connection segment through a bearing 14. A pressing and positioning structure is arranged at the outer end of the shaft structure. The pressing and positioning structure presses the bearing 14 against this connection segment, and the outer end of the shaft structure is connected to another connection segment through the pressing and positioning structure.
[0016] Preferably, both the front link 5 and the rear link 7 are arc-shaped. When the door 2 is closed, the bottom plate 18 and the support 4 are located on the door 2 and the door frame 3 in the same plane. The two pairs of links are arranged up and down, respectively forming a "C" shape, and the door tightly fits against the door frame. When the door is just opened, the door moves parallel to the door frame. After the door is completely pulled out of the door frame, it can rotate, easily opening the door completely; specifically, when the door 2 is in the closed state, the door 2 closely adheres to the door frame 3, as Figure 1 shown; when opened, the door 2 and the door frame 3 are translated and opened, as Figure 2 shown; after the door 2 is completely opened, the door hinge 1 partially extends outside the door frame 3, as Figure 3 shown.
[0017] Furthermore, as shown in the appendix Figure 5 shown, two first connecting ears are arranged at one end of the front link 5 at intervals. A first connecting block protrudes from the top of the support 4. The first connecting block at the top of the support 4 is located between the two first connecting ears at the end of the front link 5. The smaller the gap between the first connecting block and the two first connecting ears on both sides, the better. Preferably, the gap is greater than or equal to 0 and less than or equal to 0.3 mm. A small shaft 12 is arranged to pass through the first connecting block and the two first connecting ears. A bearing 14 is arranged on each side of the first connecting block. The bearing 14 is preferably embedded in the grooves on both sides of the first connecting block. The first connecting block is fixedly connected to the outer ring of the bearing 14. The inner ring of the bearing 14 is fixedly connected to the outer periphery of the small shaft 12. A bushing 13 is arranged between the two sides of the small shaft 12 and each first connecting ear. The bushing 13 is preferably in interference fit between the first connecting ear and the small shaft 12. The inner end of the bushing 13 abuts and presses against the outer side of the inner ring of the bearing 14. The two ends of the small shaft 12 respectively protrude from the first connecting ears on both sides and are fixedly connected to an end cap 10. The end cap 10 abuts against the outer end of the bushing 13. The end cap 10 can be fixed on the small shaft 12 by inserting a pin, or can be threadedly connected to the small shaft 12. One of the end caps 10 can also be integrally formed with the small shaft 12, and is used to press the bushing 13 inward against the bearing 14.
[0018] Furthermore, a limit seat 11 is fixedly connected to the top of the support 4. An arc-shaped limit hole is arranged on the limit seat 11. The arc-shaped limit hole takes the axis of the small shaft 12 as the center of the circle. A limit pin is slidably arranged in the arc-shaped limit hole. The limit pin is fixedly connected to the front link 5. It can also be that a limit pin is fixedly connected inward on the limit seat 11, and an arc-shaped limit hole for the limit pin to slide is arranged on the front link 5; the limit seat 11 on the support 4 plays a role in limiting a joint of the door hinge 1, preventing the door 2 from hitting the door frame 3 when it is completely opened and closed.
[0019] Furthermore, as shown in the appendix Figure 6As shown, one end of the front link 5 extends out of the second connection block, and two second connection ears are spaced apart at one end of the rear link 7. The smaller the gap between the second connection block and the two second connection ears on both sides, the better. Preferably, the gap is greater than or equal to 0 and less than or equal to 0.3 mm. The second connection block at the end of the front link 5 is located between the two second connection ears at the end of the rear link 7. A connecting rod 9 is provided between the two sets of link mechanisms. The connecting rod 9 includes a central shaft 15. Both ends of the central shaft 15 pass through the second connection blocks and the two second connection ears of the two sets of link mechanisms respectively and are fixedly connected to an end cap 10. That is, as shown in the figure, both ends of the central shaft 15 extend out from the outer ends of the two sets of link mechanisms and the end cap 10 is fixed. The end cap 10 can be fixed to the central shaft 15 by inserting a pin, or can be threadedly connected to the central shaft 15. The end cap 10 at one end can also be integrally formed with the central shaft 15. A central shaft sleeve 16 is sleeved on the central shaft 15. The central shaft sleeve 16 is located between the two sets of link mechanisms. A bearing 14 is provided on each side of each second connection block. The bearing 14 is preferably embedded in the grooves on both sides of the second connection block. The second connection block is fixedly connected to the outer ring of the bearing 14. The inner ring of the bearing 14 is fixedly connected to the central shaft 15. A bushing 13 is provided between the central shaft 15 and each second connection ear respectively. The bushing 13 is preferably in interference fit between the central shaft 15 and each second connection ear. One end of the bushing 13 abuts against the inner ring of the bearing 14, and the other end of the bushing 13 abuts against the end of the end cap 10 or the central shaft sleeve 16. That is, as shown in the figure, in the left link mechanism, the left side of the bearing 14 on the left side of the front link 5 is abutted and pressed by a bushing 13, and the left side of this bushing 13 is pressed by the end cap 10. The right side of the bearing 14 on the right side of the front link 5 is abutted and pressed by a bushing 13, and the right side of this bushing 13 is abutted by the end of the shaft sleeve 16. The right link mechanism is symmetric to the left link mechanism in structure.
[0020] Further, as shown in the appendix Figure 7As shown, one end of the rear link 7 is provided with a bent section 71. An angle seat 6 is arranged on the outer side of the bent section 71. The angle seat 6 is preferably made of angle steel structure. A bottom support 8 is arranged on the inner side of the bent section 71. Both the angle seat 6 and the bottom support 8 are fixedly connected to the bottom plate 18. A bottom shaft 19 is arranged between the bent sections 71 of the two rear links 7. The bottom shaft 19 forms a plurality of stepped structures that taper towards the axis direction from the middle to both ends. The two ends of the bottom shaft 19 respectively pass through the bottom support 8, the rear link 7, and the angle seat 6. The bottom shaft 19 is rotatably connected to the bottom support 8. Preferably, two of the stepped structures on both sides of the bottom shaft 19 respectively abut against the inner ends of the bottom support 8. One bearing 14 is arranged on each side of the bent section 71. The bearing 14 is preferably embedded in the grooves on both sides of the bent section 71. The bent section 71 is fixedly connected to the outer ring of the bearing 14. The inner ring of the bearing 14 is fixedly connected to the bottom shaft 19. A bushing 13 is arranged between the bottom shaft 19 and the angle seat 6. The inner ring of the bearing 14 is abutted by the bushing 13 or the stepped structure. That is, as shown in the figure, in the left bent section 71, the left side of the bearing 14 on the left side of the bent section 71 is abutted by a bushing 13, and the right side of the bearing 14 on the right side of the bent section 71 is pressed by the stepped structure of the bottom shaft 19. Preferably, end caps 10 are also fixed to the parts of the two ends of the bottom shaft 19 extending out of the bent section 71.
[0021] Further, the length of the bent section 71 is greater than or equal to the distance from the bottom shaft 19 to the inner wall of the closest door frame. Of course, the outer edge of the bottom plate 18 should not exceed the distance to the inner wall of the closest door frame either, so that the main part of the rear link 7 can Figure 3 extend into the orthographic projection range of the door frame opening as shown, enabling the door 2 to be opened as much as possible.
[0022] The structure of the present invention is reliable and not easily deformed. After multiple openings and closings using bearings, it can still maintain a good closing effect, and is suitable for use requirements in highly reliable sealing environments such as outer space exploration and deep sea exploration; It can meet different usage environments and can be normally opened and closed in harsh environments such as outdoors and at sea; The installation outside the door frame is not restricted by space, and the space required for the opening and closing activities is small.
[0023] The above are only the preferred embodiments of the present invention. It should be noted that for those skilled in the art, without departing from the overall concept of the present invention, several changes and improvements can still be made, and these should also be regarded as the protection scope of the present invention.
Claims
1. A translational and rotational combined door for a launch platform, characterized in that: It includes a door (2) and a door frame (3), and the door (2) and the door frame (3) are connected by a door hinge (1). The door hinge (1) includes a bottom plate (18) fixedly connected to the inner side of the door frame (3), and two supports (4) fixedly connected to the inner side of the door (2). One end of a front link (5) is rotatably connected to each support (4), the other end of each front link (5) is rotatably connected to one end of a rear link (7), and the other end of each rear link (7) is rotatably connected to the bottom plate (18), forming two sets of link mechanisms. At each rotational connection, two connecting segments are rotatably connected through a shaft structure. The inner segment of the shaft structure is rotatably connected to one connecting segment through a bearing (14), a pressing and positioning structure is arranged at the outer end of the shaft structure, the bearing (14) is pressed against this connecting segment by the pressing and positioning structure, and the outer end of the shaft structure is connected to the other connecting segment through the pressing and positioning structure.
2. The translation and rotation combined door for a launch platform according to claim 1, characterized in that: Two first connecting ears are arranged at one end of the front link (5) at intervals. A first connecting block protrudes from the top of the support (4), and the first connecting block at the top of the support (4) is located between the two first connecting ears at the end of the front link (5). A small shaft (12) is arranged to pass through the first connecting block and the two first connecting ears. A bearing (14) is arranged on each side of the first connecting block. The first connecting block is fixedly connected to the outer ring of the bearing (14), the inner ring of the bearing (14) is fixedly connected to the outer periphery of the small shaft (12). A bushing (13) is arranged between each side of the small shaft (12) and each first connecting ear. The inner end of the bushing (13) abuts against the inner ring of the bearing (14). The two ends of the small shaft (12) respectively protrude from the two first connecting ears on both sides and are fixedly connected to an end cap (10), and the end cap (10) abuts against the outer end of the bushing (13).
3. The translational and rotational combined door for a launch platform according to claim 2, wherein: A limit seat (11) is fixedly connected to the top of the support (4). An arc-shaped limit hole is arranged on the limit seat (11). The arc-shaped limit hole is centered on the axis of the small shaft (12). A limit pin is slidably arranged in the arc-shaped limit hole, and the limit pin is fixedly connected to the front link (5).
4. The translation and rotation combined door for a launch platform according to claim 1, wherein: A second connecting block protrudes from one end of the front link (5). Two second connecting ears are arranged at one end of the rear link (7) at intervals. The second connecting block at the end of the front link (5) is located between the two second connecting ears at the end of the rear link (7). A connecting rod (9) is arranged between the two sets of link mechanisms. The connecting rod (9) includes a middle shaft (15). The two ends of the middle shaft (15) respectively pass through the second connecting blocks and the two second connecting ears of the two sets of link mechanisms and are fixedly connected to an end cap (10). A middle shaft sleeve (16) is sleeved outside the middle shaft (15). A bearing (14) is arranged on each side of each second connecting block. The second connecting block is fixedly connected to the outer ring of the bearing (14), the inner ring of the bearing (14) is fixedly connected to the middle shaft (15). A bushing (13) is arranged between the middle shaft (15) and each second connecting ear. One end of the bushing (13) abuts against the inner ring of the bearing (14), and the other end of the bushing (13) abuts against the end of the end cap (10) or the middle shaft sleeve (16).
5. The translational and rotational combined door for a launch platform according to claim 1, characterized in that: One end of the rear connecting rod (7) is provided with a bending section (71). An angle seat (6) is arranged outside the bending section (71), and a bottom support (8) is arranged inside the bending section (71). Both the angle seat (6) and the bottom support (8) are fixedly connected to the bottom plate (18). A bottom shaft (19) is arranged between the bending sections (71) of the two rear connecting rods (7). The bottom shaft (19) forms a plurality of stepped structures that taper towards the axis direction from the middle to both ends. Both ends of the bottom shaft (19) respectively pass through the bottom support (8), the rear connecting rod (7), and the angle seat (6). The bottom shaft (19) is rotatably connected to the bottom support (8). A bearing (14) is arranged on each side of the bending section (71). The bending section (71) is fixedly connected to the outer ring of the bearing (14), and the inner ring of the bearing (14) is fixedly connected to the bottom shaft (19). A bushing (13) is arranged between the bottom shaft (19) and the angle seat (6). The inner ring of the bearing (14) is abutted by the bushing (13) or the stepped structure.
6. The translation and rotation combined door for a launch platform according to claim 5, characterized in that: The length of the bending section (71) is greater than or equal to the distance from the bottom shaft (19) to the inner wall of the closest door frame.