Cabin door hinge structure of oxygen cabin

Abstract

The utility model relates to a cabin door hinge structure of an oxygen cabin, which comprises a door plate hinge seat and a door frame hinge seat, and further comprises a first connector, a second connector and a third connector which are sequentially connected between the door plate hinge seat and the door frame hinge seat, a door plate limiting adjusting assembly is arranged between the door plate hinge seat and the first connecting body, the end, connected with the second connecting body, of the third connecting body is provided with a limiting tension spring seat which abuts against the outer side face of the second connecting body to limit the relative outward rotation angle of the two connecting bodies, and a pair of tension springs is arranged between the limiting tension spring seat and the door plate hinge seat in a pulling mode. According to the utility model, the adjustable allowance is designed among the components of the whole hinge structure, so that the fault-tolerant adaptation capability in the cabin door opening and closing process, especially in the cabin door closing and pressurizing process is realized, the stability of the hinge structure is protected by adjusting and eliminating stress, and the service life of the hinge structure is prolonged. And a series of negative effects such as hinge structure damage and abrasion and poor cabin door sealing caused by stress concentration are avoided.

Description

Technical Field

[0001] The utility model relates to a door hinge, in particular to a hinge structure for a rotating door of an oxygen cabin, belonging to the technical field of oxygen cabin structures. Background Art

[0002] At present, there are two ways to open the door of a hyperbaric oxygen chamber: translation opening and rotation opening. The rotation opening door is connected to the door frame by a hinge structure. During the opening and closing process of the door, the hinge structure provides a rotation connection. In actual use, the existing hinge structure of the oxygen chamber door has the following main problems: 1. Since the existing hinge is not designed with an adjustment margin, under the conditions of the existing door body and door frame processing accuracy, when the door body is closed and pressurized, the stress on the hinge is very large, which is very easy to produce hard extrusion and damage and deformation of the hinge structure; 2. The door body is pressed tightly against the door frame under strong pressure, and there is still a problem of poor sealing near the hinge position. Summary of the invention

[0003] The utility model aims to solve the above-mentioned technical problems and further provides a door hinge structure of an oxygen cabin.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A door hinge structure of an oxygen cabin is installed between a door frame and a door body to play a role of rotational connection, including a door panel hinge seat connected to a door panel and a door frame hinge seat connected to a door frame. The special feature of the structure is that it also includes:

[0006] A first connector, a second connector and a third connector connected in sequence between the door panel hinge seat and the door frame hinge seat;

[0007] A door panel limit adjustment assembly is provided between the door panel hinge seat and the first connector, and the door panel limit adjustment assembly includes a vertical plate installed on the door panel hinge seat, an adjustment screw hole provided on the vertical plate, and an adjustment screw threadedly screwed into the adjustment screw hole; the vertical plate is provided on one side of the first connector, the adjustment screw threadedly screwed into the adjustment screw hole and then abuts against the side surface of the first connector through its rod bottom, and the angle and position relationship between the first connector and the door panel hinge seat are controlled by adjusting the extension length of the rod end of the adjustment screw;

[0008] The end of the third connector connected to the second connector is provided with a limit spring seat abutting against the outer side of the second connector to limit the relative outward rotation angle of the two connectors, and a pair of tension springs are provided between the limit spring seat and the door panel hinge seat.

[0009] Furthermore, the first connector is a plate-like structure with connecting shaft holes at both ends, the connecting shaft hole at one end is hinged to the door panel hinge seat through a rotating shaft, and the connecting shaft hole at the other end is connected to the second connector.

[0010] Furthermore, the second connector is a double-layer plywood structure, one end of which is connected to one end of the first connector through two layers of plywood of the double-layer plywood structure and a rotating shaft, and the other end is connected to the third connector.

[0011] Furthermore, the third connector is a plate-like structure with connecting shaft holes at both ends, one end of which is clamped between the two layers of the second connector and movably connected through a rotating shaft, and the other end is hinged to the door frame hinge seat through the connecting shaft hole and the rotating shaft.

[0012] Furthermore, a plurality of adjustable tension spring hanging points are arranged on the position-limiting tension spring seat.

[0013] Furthermore, a limiting point 1 for limiting the relative inward rotation angle of the two connecting bodies is provided on the inner side of the second connecting body.

[0014] Furthermore, a second limiting point for rotationally limiting the third connecting body is provided on the door frame hinge seat.

[0015] The utility model provides a hatch hinge structure for an oxygen cabin, which has the advantages of easy operation, less structural wear, and strong practicality. In terms of structural design, the original hard-connected hinge structure is set as a flexible hinge structure with a certain adjustment margin. By designing an adjustable margin between the components of the overall hinge structure, the fault-tolerant adaptation capability during the hatch opening and closing, especially during the hatch closing pressurization process, is achieved. By adjusting and eliminating the stress, the stability of the hinge structure itself is protected, and a series of adverse consequences such as damage and wear of the hinge structure caused by stress concentration and poor hatch sealing are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : A schematic diagram of the first angle structure of the oxygen cabin door hinge of Example 1;

[0017] Figure 2 : Schematic diagram of the second angle structure of the oxygen cabin door hinge of Example 1;

[0018] In the figure, 1. door panel hinge seat, 2. first connector, 3. second connector, 4. third connector, 5. door frame hinge seat, 6. tension spring hanging point, 7. vertical plate, 9. adjusting screw, 10. limit spring seat, 11. tension spring, 12. limit point one, 13. limit point two. DETAILED DESCRIPTION

[0019] The utility model is described in detail below with reference to the accompanying drawings.

[0020] Embodiment 1

[0021] The present embodiment relates to a door hinge structure of an oxygen cabin, which is installed between a door frame and a door body to provide a rotational connection function. The door hinge structure comprises: a door panel hinge seat 1 for connecting with a door panel and a door frame hinge seat 5 for connecting with a door frame. A first connector 4, a second connector 3 and a third connector 2 are sequentially connected between the door panel hinge seat 1 and the door frame hinge seat 5. The first connector 4 is a plate-like structure with connecting shaft holes at both ends. The connecting shaft hole at one end is hinged to the door panel hinge seat 1 through a rotating shaft, and the connecting shaft hole at the other end is connected to the second connector 3. The second connector 3 is a double-layer plywood structure, one end of which is connected to one end of the first connector 4 through two layers of plywood of the double-layer plywood structure and a rotating shaft, that is, one end of the first connector 4 is sandwiched between the two layers of plywood of the second connector 3, and the other end of the second connector 3 is connected to the third connector 2. The main structure of the third connector 2 is the same as that of the first connector 4, and is also a plate-like structure with connecting shaft holes at both ends. One end of the plate is clamped between the two layers of the second connector 3 and movably connected through a rotating shaft, and the other end is hinged to the door frame hinge seat 5 through the connecting shaft hole and the rotating shaft.

[0022] The following is a detailed description of the various parts of the hinge structure and their connection relationships:

[0023] The door panel hinge seat 1 is fixed to the door panel by bolts. In this embodiment, a door panel limit adjustment component is designed between the door panel hinge seat 1 and the first connector 4, and the component can adjust the relative position and angle relationship between the door panel hinge seat 1 and the first connector 4, so that the overall hinge structure obtains an adjustment margin for adaptive fault tolerance based on a predetermined position angle of the door panel.

[0024] The door panel limit adjustment assembly includes a vertical plate 7 installed on the door panel hinge seat 1, an adjustment screw hole opened on the vertical plate 7, and an adjustment screw 9 threadedly screwed into the adjustment screw hole. The vertical plate 7 is arranged on one side of the first connecting body 4, and the adjustment screw 9 is threadedly screwed into the adjustment screw hole 9 and then contacts the side of the first connecting body 4 through its rod bottom. By adjusting the extension length of the rod end of the adjustment screw 9, the angle and position relationship between the first connecting body 4 and the door panel hinge seat 1 (such as whether the two are perpendicular to each other or have a certain inclination angle) can be controlled, and then the door panel hinge seat 1 can be adjusted based on the assembly state of the door panel to avoid a series of problems such as stress concentration and wear on the overall hinge structure during the opening and closing and pressurized sealing of the hatch door when the door panel is uneven or the installation angle deviates.

[0025] In order to limit the rotation angle between the third connector 2 and the second connector 3, the end portion where the third connector 2 is connected to the second connector 3 is provided with a limit spring seat 10 abutting against the outer side surface of the second connector 3 to limit the relative outward rotation angle of the third connector 2 and the second connector 3. At the same time, a limit point 12 is provided on the inner side of the second connector 3 to limit the relative inward rotation angle of the third connector 2 and the second connector 3.

[0026] A pair of tension springs 11 are arranged between the limit tension spring seat 10 and the door panel hinge seat 1, and the tension springs 11 are used to reset the initial configuration relationship of the various parts of the entire hinge structure, and at the same time form an elastic limit between the first connector 4 and the second connector 3, and the relative outward rotation and inward rotation of the first connector 4 and the second connector 3 are both subject to a certain angle restriction. A plurality of adjustable tension spring hanging points 6 are arranged on the limit tension spring seat 10.

[0027] The door frame hinge seat 5 is provided with a second limiting point 13 for limiting the rotation of the third connecting body 2 .

[0028] During the initial installation of the hinge structure of this embodiment, the angle position between the door panel hinge seat 1 and the first connector 4 is first debugged through the door panel limit adjustment assembly based on the compatibility between the door frame and the door body. After the debugging is completed, the overall hinge structure is assembled on the cabin body.

[0029] When opening the door, the opening force first acts on the door panel hinge seat 1. Under the limiting action of the door panel limit adjustment assembly, the relative positions between the door panel hinge seat 1 and the first connector 4, between the first connector 4 and the second connector 3, and between the second connector 3 and the third connector 2 are fixed, and the third connector 2 and the door frame hinge seat 4 move relative to each other to complete the opening action.

[0030] After closing the door and before applying pressure, the door panel contacts the sealing strip of the door frame. When applying pressure, as the pressure increases, a longitudinal displacement occurs between the door panel and the door frame, and the stress generated by the door panel hinge seat 1 is eliminated through the active connection relationship between the hinges.

[0031] The hatch hinge structure of an oxygen cabin of the present embodiment configures the original hard-connected hinge structure into a flexible hinge structure with a certain adjustment margin, and realizes fault-tolerant adaptation capability during hatch opening and closing, especially during hatch closing and pressurization, by designing adjustable margins between the components of the overall hinge structure. By eliminating the stress through adjustment, the stability of the hinge structure itself is protected, and a series of adverse consequences such as damage and wear of the hinge structure due to stress concentration and poor hatch sealing are avoided.

Claims

1. A door hinge structure of an oxygen cabin, which is installed between a door frame and a door body to play a role of rotational connection, comprising a door panel hinge seat connected to a door panel, and a door frame hinge seat connected to a door frame, characterized in that: Also includes: A first connector, a second connector and a third connector connected in sequence between the door panel hinge seat and the door frame hinge seat; A door panel limit adjustment assembly is provided between the door panel hinge seat and the first connector, and the door panel limit adjustment assembly includes a vertical plate installed on the door panel hinge seat, an adjustment screw hole provided on the vertical plate, and an adjustment screw threadedly screwed into the adjustment screw hole; the vertical plate is provided on one side of the first connector, the adjustment screw threadedly screwed into the adjustment screw hole and then abuts against the side surface of the first connector through its rod bottom, and the angle and position relationship between the first connector and the door panel hinge seat are controlled by adjusting the extension length of the rod end of the adjustment screw; The end of the third connector connected to the second connector is provided with a limit spring seat abutting against the outer side of the second connector to limit the relative outward rotation angle of the two connectors, and a pair of tension springs are provided between the limit spring seat and the door panel hinge seat.

2. The door hinge structure of an oxygen cabin as claimed in claim 1, characterized in that: The first connector is a plate-like structure with connecting shaft holes at both ends. The connecting shaft hole at one end is hinged to the door panel hinge seat through a rotating shaft, and the connecting shaft hole at the other end is connected to the second connector.

3. The door hinge structure of an oxygen cabin as claimed in claim 2, characterized in that: The second connector is a double-layer plywood structure, one end of which is connected to one end of the first connector through two layers of plywood of the double-layer plywood structure and a rotating shaft, and the other end is connected to the third connector.

4. The door hinge structure of an oxygen cabin as claimed in claim 3, characterized in that: The third connector is a plate-like structure with connecting shaft holes at both ends. One end of the plate is clamped between the two layers of the second connector and movably connected through a rotating shaft, and the other end is hinged to the door frame hinge seat through the connecting shaft hole and the rotating shaft.

5. The door hinge structure of an oxygen cabin as claimed in claim 1, characterized in that: The position-limiting tension spring seat is provided with a plurality of adjustable tension spring hanging points.

6. The door hinge structure of an oxygen cabin as claimed in claim 1, characterized in that: A limiting point 1 for limiting the relative inward rotation angle between the second connecting body and the third connecting body is provided on the inner side of the second connecting body.

7. The door hinge structure of an oxygen cabin as claimed in claim 1, characterized in that: The door frame hinge seat is provided with a second limiting point for limiting the rotation of the third connecting body.

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