Internal opening and closing mechanism, electric opening and closing cabin cover and internal opening cover square cabin

Abstract

The invention discloses an inner opening and closing mechanism, an electric opening and closing hatch cover and an inner opening shelter, the inner opening and closing mechanism comprises a main hinge, a driving mechanism and a stress assembly, the main hinge comprises a main frame body of a V-shaped structure, and a fixing plate fixedly connected with the hatch cover is fixedly arranged at one end of the main frame body; a second support is hinged to the other end of the main frame body, and the second support is fixedly connected with the cabin body; a connecting hole is formed in the tip part of the main frame body; at least two main hinges are arranged, and the rotating shaft penetrates through the connecting holes of the main hinges; a first connecting rod extending outwards is fixed on the rotating shaft; the stress assembly comprises a second connecting rod, one end of the second connecting rod is rotationally connected with the first connecting rod, and the other end of the second connecting rod is hinged to the fourth support. The driving mechanism comprises a telescopic unit, one end of the telescopic unit is hinged to the first support, and the other end of the telescopic unit is hinged to the second connecting rod. On the basis of meeting stable inward opening, the working distance of the telescopic cylinder is effectively shortened, and the problem of structural interference is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hinges for doors, windows or wing leaves, and in particular to an inner opening and closing mechanism, an electric opening and closing hatch cover and an inner opening and covering square cabin. Background Art

[0002] In addition to being used as temporary shelters for hospitals and disaster relief, square cabins are also often used to load and escort important materials and equipment. Large equipment is usually loaded into the square cabin by lifting, so the cabin body needs to adopt a top-opening structure.

[0003] Stainless steel hinges can be installed on the outside of small door bodies. If used in an exposed environment for a long time, they are prone to loosening, abnormal noise, rust and other problems. When the hatch is heavy, the failure rate of the hinges will increase, and it will be more difficult to manually open the hatch and door.

[0004] Announcement No. CN109441274A discloses a cabin tailgate opening and closing mechanism, which can realize large-angle opening and closing of the tailgate. However, since it adopts a hinged hinge, it is not well suited for scenes with heavy hatches. If it is applied to the opening and closing of hatches, some of the above-mentioned hinge problems still exist. And for a cabin with an upper cover, if a hinge is used, rainwater will leak in from the connection between the upper cover and the cabin body when the cabin is closed.

[0005] The patent with announcement number CN222045463U discloses a single-cylinder square cabin cover opening structure (the prior application of the applicant), which uses the support seat as the force support point, and the active cylinder applies force to push the connecting frame to move, thereby opening the hatch cover. This solution achieves the effect of internal opening and effectively avoids the disadvantage of the mechanism being exposed to the environment, but the hatch cover opening angle of this structure depends entirely on the extension of the active cylinder. If the active cylinder's running route is too long, it is easy to cause the problem of over-limit stroke and failure of the limit switch. Especially for heavy hatch covers, the large load means that the torque of the active cylinder will also increase when working, which increases the risk of over-limit stroke of the active cylinder. In addition, there is another problem in the above solution. The stroke of the active cylinder is limited by the reinforcing rod. If it is extended too long, it will touch and interfere with the reinforcing rod in the middle of the connecting frame, which will lead to the problem that the hatch cover cannot be fully opened and the active cylinder pull rod and the reinforcing rod collide and wear. Summary of the invention

[0006] The object of the present invention is to provide an inner opening and closing mechanism, an electric opening and closing hatch cover and an inner opening cover square cabin, which can effectively shorten the working distance of the telescopic cylinder and avoid structural interference problems while meeting the requirements of stable inner opening.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: An internal opening and closing mechanism is installed inside the cabin and located between the cabin and the cabin cover to realize the opening and closing of the cabin cover relative to the cabin. The internal opening and closing mechanism includes a main hinge, a rotating shaft, a first connecting rod, a driving mechanism, and a force-bearing component. The main hinge includes a main frame body, which is in a V-shaped or V-shaped-like structure. One end and the other end are formed at the opening of the main frame body. A fixed plate is fixedly provided at one end of the main frame body, and the fixed plate is fixedly connected to the cabin cover; the other end of the main frame body is hinged with a second support, and the second support is fixedly connected to the cabin body; a connection hole is provided at the tip of the main frame body. At least two main hinges are arranged along the docking seam of the cabin body and the cabin cover. The rotating shaft passes through the connection holes of each main hinge, and the rotating shaft is rotationally matched with the connection holes; a first connecting rod extending outward is fixed on the rotating shaft, and the outer end of the first connecting rod is set as a first connection point. The force-bearing component includes a second connecting rod. One end of the second connecting rod is rotatably connected to the first connection point, and the other end of the second connecting rod is hingedly connected to a fixed-position fourth support. The driving mechanism includes a telescopic unit. One end of the telescopic unit is hingedly connected to a fixed-position first support, and the other end of the telescopic unit is hingedly connected to the second connecting rod.

[0008] Based on the above, two first connecting rods are arranged on the rotating shaft along its axial direction, and a second connecting rod is connected to the connecting end of each first connecting rod. A third support is further provided at the upper position of the second connecting rod. The third support is fixed between the two second connecting rods, and the other end of the telescopic unit is hingedly connected to the third support.

[0009] Based on the above, the two sides of the third support extend outwards with flanks, and the flanks are fixedly connected to the corresponding second connecting rods. The third support is distributed with third connection points corresponding to the connection of the telescopic unit.

[0010] Based on the above, the first support includes upper and lower mounting plates and a vertical rib plate in the middle. The lower mounting plate is fixedly connected to the cabin body, and the upper mounting plate is provided with a first connection point corresponding to the connection of one end of the telescopic unit.

[0011] Based on the above, the fourth support has two perpendicular mounting surfaces, and the two mounting surfaces of the fourth support are fixedly connected to two surfaces of the cabin body at the same time.

[0012] Based on the above, the second support has two perpendicular mounting surfaces, and the two mounting surfaces of the second support are fixedly connected to the cabin body and the support member fixed on the cabin body at the same time.

[0013] Based on the above, the telescopic unit includes a main cylinder and several follower cylinders. One end of the main cylinder / follower cylinder is hingedly connected to the first support, and the other end of the main cylinder / follower cylinder is hingedly connected to the third support.

[0014] Based on the above, one or more secondary hinges are also arranged at the docking seam between the cabin body and the cabin cover, and the secondary hinges are distributed at positions other than the main hinge; The secondary hinge includes a secondary frame body, and the secondary frame body is in a V-shaped or V-shaped-like structure. One end and the other end are formed at the opening of the secondary frame body. A fixing plate is fixedly arranged at one end of the secondary frame body, and the fixing plate is fixedly installed on the cabin cover; a second support is hinged at the other end of the secondary frame body, and the second support is fixedly installed on the cabin body.

[0015] The present invention also discloses an electrically opening and closing cabin cover. The cabin cover is an upper-opening structure with a symmetrical structure, and includes two upper cabin covers. Each upper cabin cover is connected to the corresponding side wall of the cabin body through the inner opening and closing mechanism.

[0016] Based on the above, each upper cabin cover includes a first cover body and a second cover body that form an angle with each other. The first cover body is used to be connected to the inner opening and closing mechanism, and the two second cover bodies form the main body of the cabin cover; When the upper cabin cover is closed, the first cover body and the side wall of the cabin body where the inner opening and closing mechanism is installed are in the same plane.

[0017] Based on the above, the angle between the first cover body and the second cover body is between 90° and 120°.

[0018] Based on the above, rain shields are arranged on the sides of each first cover body connected to the cabin body; rain shields are also arranged on the closing edges of any one of the second cover bodies; The rain shield is in a Z-shaped or Z-shaped-like structure. One side is fixed to the first cover body / second cover body, and the other side extends in a suspended manner towards the direction where rain protection is required.

[0019] The present invention also discloses another electrically opening and closing cabin cover. The cabin cover is a vertically opening door structure with a symmetrical structure, and includes two side cabin covers. Each side cabin cover is connected to the cabin body through the inner opening and closing mechanism; When the side cabin cover is closed, the side cabin cover and the side wall of the cabin body where the inner opening and closing mechanism is installed are in the same plane.

[0020] The present invention also discloses an inner-opening square cabin including the electrically opening and closing cabin cover.

[0021] The beneficial effects of the present invention: 1. The present invention can maintain the stability of the opening process, and the inner opening and closing mechanism is located inside the cabin body, which also avoids the adverse factors of the external environment on the mechanism.

[0022] The present invention effectively shortens the running distance of the driving mechanism, avoids overtravel, and prolongs the service life of the driving mechanism; expands the opening and closing angle of the cabin cover to achieve a fully open state of 180°; has fewer parts than the prior art, simplifies the mechanism, has fewer special-shaped components, stronger interchangeability, and reduces the processing difficulty; can adapt to special-shaped cabin covers, and has high installation and use flexibility.

[0023] 2. The technical solution of the present invention constitutes a connecting rod-slider pair mechanism, which has a unique degree of freedom and a definite motion route. In the prior art solutions, the driving mechanism directly acts on the parts connected to the hatch cover, and its working distance is too long. In this technical solution, the driving mechanism acts on the force-bearing component, and then the force-bearing component pushes the first connecting rod and the main hinge. The first connecting rod is used to compensate for the distance that the driving mechanism should originally move upward. Compared with the prior art, the motion distance of the driving mechanism is effectively shortened, the risk of over-travel is reduced, and the service life of the driving mechanism is extended.

[0024] 3. The V-shaped structure design of the main hinge in the present invention effectively avoids collision with the cabin body frame and enlarges the opening angle of the hatch cover.

[0025] 4. In the present invention, the driving mechanism adopts a cooperation scheme of a main cylinder and a follower cylinder. The main cylinder has the ability of independent driving and is the power source of the mechanism. The follower cylinder does not have the driving ability and follows the main cylinder to perform telescopic actions. During the opening and closing of the hatch cover, it does not bear force. However, when the hatch cover is impacted and disturbed by external air flow, the follower cylinder can share the pulling force of the main cylinder and enhance the anti-torsion ability of the opening mechanism and the top cover at the same time.

[0026] 5. In the present invention, the first support is designed with two upper and lower mounting plates and a vertical rib plate in the middle. The vertical rib plate raises the lower end position of the driving mechanism, which further shortens the working distance of the driving mechanism.

[0027] 6. In the present invention, the fourth support preferably adopts a scheme of being connected to both the bottom surface and the side wall of the cabin body at the same time. Since the force-bearing component needs to bear the force from the driving mechanism and the reaction force from the hatch cover, the fourth support is the fixed point between the force-bearing component and the cabin body and is also the final force-bearing component. The method of attaching to two walls can play a supporting role to the greatest extent.

[0028] 7. The present invention also designs a secondary hinge to play an auxiliary supporting role for the hatch cover, which solves the problem that "when the hatch cover is long, the internal opening and closing mechanism drives the hatch cover to open and close in the middle of the hatch cover, there is no driving force at both ends of the hatch cover. If the masses on both sides of the mechanism are unbalanced, it is very easy to cause the end of the hatch cover to close out of sync".

[0029] 8. The upper hatch cover of the present invention can adopt a design scheme of a first cover body and a second cover body that are angled to each other. The two-section door body is more conducive to the installation of the fixing plate in the main hinge and also increases the capacity inside the cabin body. Therefore, it can be well applied to flat hatch covers and irregular hatch covers.

[0030] 9. When the present invention is applied to a square cabin with an upward-opening hatch, it is convenient to arrange a rain shield, which can effectively play a role in preventing rain when the hatch cover is closed, and solves the problem that "in the prior art, a hinge is used, and rainwater will leak into the cabin from the connection between the upper cover and the cabin body when the square cabin is closed".

[0031] 10. The technical solution of the present invention completely eliminates the hinge, adds a second connecting rod to enhance the structural stability, and enables the hatch cover to rotate around the second support of the main hinge. The second support is close to the upper edge of the hatch wall, so that the hatch cover moves away from the hatch wall during the movement process, achieving the purpose of preventing the rain shield from interfering with the hatch wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a forward three-dimensional schematic view of the internal opening and closing mechanism in the first embodiment of the present invention; Figure 2 is a reverse three-dimensional schematic view of the internal opening and closing mechanism in the first embodiment of the present invention; Figure 3 is a schematic view of the main hinge in the first embodiment of the present invention; Figure 4 is a schematic view of the third support in the first embodiment of the present invention; Figure 5 is a schematic view of the auxiliary hinge in the first embodiment of the present invention; Figure 6 is a schematic view of the kinematic pair of the internal opening and closing mechanism in the first embodiment of the present invention; Figure 7 is a comparison diagram between the present invention and the prior art; Figure 8 is an installation schematic view of the internal opening and closing mechanism in the first embodiment of the present invention; Figure 9 is an installation schematic view of the internal opening and closing mechanism in the second embodiment of the present invention; Figure 10 is an installation schematic view of the internal opening and closing mechanism in the third embodiment of the present invention; Figure 11 is a schematic view of the electric opening and closing hatch cover in the fourth embodiment of the present invention; Figure 12 is Figure 11 an enlarged view of part Ⅰ in Figure 13 is a front view of the electric opening and closing hatch cover in the fifth embodiment of the present invention; Figure 14 is a top view of the electric opening and closing hatch cover in the fourth embodiment of the present invention.

[0033] The drawings are only for illustrative purposes and should not be construed as a limitation of this patent; to better illustrate this embodiment, some components in the drawings are omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention.

[0035] Embodiment 1: As Figures 1 to 8 shown, this embodiment provides an inner opening and closing mechanism, which is installed inside the cabin body and located between the cabin body 3 and the cabin cover 4 to realize the opening and closing of the cabin cover 4 relative to the cabin body 3.

[0036] Specifically, the inner opening and closing mechanism includes a main hinge 5, a rotating shaft 6, a first connecting rod 11, a driving mechanism and a force-bearing component.

[0037] The main hinge 5 includes a main frame body, which is of a V-shaped or V-shaped-like structure. One end and the other end are formed at the opening of the main frame body. A fixing plate 51 is fixedly provided at one end of the main frame body, and the fixing plate 51 is fixedly connected to the cabin cover 3; the other end of the main frame body is hinged with a second support 12, and the second support 12 is fixedly connected to the cabin body 3; a connecting hole 50 is provided at the tip of the main frame body.

[0038] The V-shaped structure design of the main hinge effectively avoids collision with the cabin body frame and expands the opening angle of the cabin cover.

[0039] Two main hinges 5 are arranged along the docking seam of the cabin body 3 and the cabin cover 4. The rotating shaft 6 passes through the connecting holes 50 of each main hinge, and the rotating shaft 6 is rotationally matched with the connecting holes 50. Two first connecting rods 11 extending outward are fixedly arranged on the rotating shaft 6 along the axial direction. The main hinges 5 are respectively located on both sides of the two first connecting rods 11, and the outer ends of the first connecting rods 11 are set as first connection points.

[0040] To ensure the normal operation of the mechanism, the horizontal position of the connecting hole 50 shall not be lower than the horizontal position of the second support 12, that is, the second support 12 and the first connecting rod 11 shall not be collinear to avoid the dead point position of the mechanism.

[0041] The force-bearing component includes a second connecting rod 12. One end of the second connecting rod 12 is rotatably connected to the first connection point of the first connecting rod 11, and the other end of the second connecting rod 12 is hingedly connected to a fixed-position fourth support 14.

[0042] In this embodiment, the fourth support 14 has two perpendicular mounting surfaces, and the two mounting surfaces of the fourth support 14 are simultaneously fixedly connected to the inner bottom surface and the side wall of the cabin body. The force-bearing component needs to bear the force from the driving mechanism and the reaction force from the cabin cover. The fourth support 14 is the fixed point between the force-bearing component and the cabin body and is also the final force-bearing component. The method of attaching to the wall on both sides can play a supporting role to the greatest extent.

[0043] A third support 13 is also provided at the upper position of the second connecting rod 12. Flanks 131 extend from both sides of the third support 13, and the flanks 131 are fixedly connected to the two second connecting rods 12. Third connection points corresponding to the telescopic unit are distributed on the third support 13.

[0044] The drive mechanism includes a telescopic unit. The telescopic unit adopts an arrangement scheme of an electric cylinder 71 and two follower cylinders 72. The follower cylinders 72 are located on both sides of the electric cylinder 71. The lower ends of the electric cylinder 71 and the follower cylinders 82 are both hinged to a first support 11 with a fixed position, and the upper ends are both hinged to a third connection point on a third support 13. The electric cylinder 71 has the ability of independent drive and is the power source of the mechanism. The follower cylinders 72 do not have the drive ability and follow the electric cylinder 71 to perform telescopic movements together. During the opening and closing process of the hatch cover, they do not bear force. However, when the hatch cover is impacted and disturbed by external airflows, the follower cylinders can share the pulling force of the electric cylinder and at the same time enhance the torsional resistance of the opening mechanism and the top cover. The motor 70 of the electric cylinder 71 is fixed to the electric cylinder 71 by a hoop 73 to maintain synchronous movement.

[0045] In this embodiment, the first support 11 includes upper and lower mounting plates and a vertical rib plate 111 in the middle. The lower mounting plate is fixedly connected to the inner bottom surface of the cabin body, and the upper mounting plate is provided with first connection points corresponding to the lower ends of the electric cylinder 71 and the two follower cylinders 72. The vertical rib plate 111 raises the lower end position of the drive mechanism and plays a role in further shortening the working distance of the drive mechanism.

[0046] One or more secondary hinges 8 are also arranged at the docking seam of the cabin body 3 and the hatch cover 4. The secondary hinges 8 are distributed at positions outside the main hinge 5. The secondary hinges 8 play an auxiliary supporting role for the hatch cover (when the hatch cover is long, the inner opening and closing mechanism drives the hatch cover to open and close in the middle of the hatch cover, and there is no driving force at both ends of the hatch cover. If the masses on both sides of the mechanism are unbalanced, it is easy to cause the problem of asynchronous closing at the ends of the hatch cover).

[0047] The difference between the secondary hinge 8 and the main hinge 5 is that the secondary hinge 8 is not provided with a connection hole. Specifically, the secondary hinge 8 includes a secondary frame body. The secondary frame body is of a V-shaped or similar to V-shaped structure. One end and the other end are formed at the opening of the secondary frame body. A fixing plate is fixedly provided at one end of the secondary frame body, and the fixing plate is fixedly installed on the hatch cover. A second support is hinged at the other end of the secondary frame body, and the second support is fixedly installed on the cabin body.

[0048] As Figure 6 shown, it is a schematic diagram of the kinematic pairs of the inner opening and closing mechanism. In the figure, A, B, C, D, E, F, and G are the comparison schematics of the structural diagram and the kinematic pairs. It can be seen that the technical solution of the present invention constitutes a link-slider pair mechanism, and the mechanism has a unique degree of freedom and a definite movement route.

[0049] As Figure 7As shown in the figure, this is a comparison diagram between the present invention and the prior art solution (CN222045463U). In the prior art solution, the driving mechanism directly acts on the part connected to the hatch cover, and its working distance is too long. In the technical solution of the present invention, the driving mechanism acts on the force-bearing component, and then the force-bearing component pushes the first connecting rod and the main hinge. The first connecting rod is used to compensate for the distance that the driving mechanism should originally travel upward. Compared with the prior art, the movement distance of the driving mechanism is effectively shortened, the risk of over-travel is reduced, and the service life of the driving mechanism is extended.

[0050] Denote the movement distance of the driving mechanism in the prior art as L1, and the movement distance of the driving mechanism in the technical solution of the present invention as L2. The angle between the hatch cover and the horizontal plane is Φ. An electric cylinder with a formed length of 390 mm is selected. After measurement, the following data is obtained: Table 1 Corresponding data of the driving mechanism movement distance and the hatch cover opening angle According to the measurement data, the movement distance L1 of the driving mechanism in the prior art is 2.5 - 3.1 times that of the driving mechanism in this technical solution, and the prior art cannot achieve a 180° opening of the hatch cover, effectively verifying the feasibility of the technical solution of the present invention.

[0051] In this embodiment, a second connecting rod is added to enhance the structural stability, and the hatch cover rotates around the second support of the main hinge. The second support is close to the upper edge of the cabin wall, so that the hatch cover moves away from the cabin wall during the movement process, achieving the purpose of preventing interference with the cabin wall.

[0052] Embodiment Two: As Figure 9 shown, the difference between this embodiment and Embodiment One is that the structure of the second support 12 of the main hinge is different.

[0053] The second support 12 of this embodiment has two perpendicular mounting surfaces, and the two mounting surfaces of the second support are fixedly connected to the cabin body 3 and the support member 31 fixed on the cabin body at the same time. The greatest advantage is that it can be stressed on two sides. When there is a support member in the cabin that can fix the main hinge, using the solution of the fourth support in this embodiment can strengthen the supporting force of the main hinge.

[0054] Embodiment Three: As Figure 10 shown, the difference between this embodiment and Embodiment One is that this embodiment is provided with two sets of internal opening and closing mechanisms (including main hinge, rotating shaft, first connecting rod, driving mechanism and force-bearing component).

[0055] This embodiment is applicable to the scenario where the hatch cover is too heavy and too long. It is not limited to using two sets of internal opening and closing mechanisms to keep the hatch cover opening and closing stably. At this time, the auxiliary hinge can be not used.

[0056] Embodiment Four: As Figures 11 to 12 shown, this embodiment discloses an electrically opening and closing hatch cover. The hatch cover is an upper-opening structure with a symmetrical structure, including two upper hatch covers 401. Each upper hatch cover 401 is connected to the side wall of the corresponding cabin body 3 through the internal opening and closing mechanism of any of the foregoing embodiments.

[0057] Each upper hatch cover 401 includes a first cover body 41 and a second cover body 42 that form an angle with each other. The first cover body 41 is used to connect to the internal opening and closing mechanism, and the two second cover bodies 42 form the main body of the hatch cover.

[0058] When the upper hatch cover 401 is closed, the first cover body 41 of the upper hatch cover 401 and the side wall of the cabin body 3 where the internal opening and closing mechanism is installed are in the same plane.

[0059] The angle between the first cover body 41 and the second cover body 42 is between 90 and 120 degrees. The two-section door body is more conducive to the installation of the fixed plate in the main hinge and also increases the capacity inside the cabin body. Therefore, the upper-opening mechanism can be applied to flat hatch covers and irregular hatch covers.

[0060] Rain shields 9 are provided on one side of the two first cover bodies 41 connected to the cabin body; rain shields 9 are also provided on the closing edge of any one of the second cover bodies 42. The rain shield 9 is of a Z-shaped or similar structure, with one side fixed to the first cover body 41 / second cover body 42 and the other side hanging and extending in the direction where rain protection is required.

[0061] When rain shields are provided, it is stipulated that the upper hatch covers with two rain shields are preferentially opened and delayed in closing to avoid interference between the two hatch covers during the opening and closing process. The time for preferential opening and delayed closing is 0.5 - 1 s.

[0062] This embodiment facilitates the arrangement of rain shields, can effectively play the role of rain protection when the hatch cover is closed, and solves the problem that "in the prior art, when using a hinge hinge, rainwater will leak into the cabin from the connection between the upper cover and the cabin body when the square cabin is closed".

[0063] The technical solution of this embodiment completely eliminates the hinge, adds a second connecting rod to enhance the structural stability, and makes the hatch cover rotate around the second support of the main hinge. The second support is close to the upper edge of the cabin wall, so that the hatch cover moves away from the cabin wall during the movement process, achieving the purpose of preventing interference between the rain shield and the cabin wall.

[0064] This embodiment is applied to the square cabin with an upper-opening structure, solving the problems of labor-saving opening and rain protection during closing of the hatch cover.

[0065] Embodiment Five: As Figures 13 to 14 shown, this embodiment discloses an electrically opening and closing hatch cover. The hatch cover is a vertical door-opening structure with a symmetrical structure, including two side hatch covers 402. Each side hatch cover 402 is connected to the side wall of the cabin body 3 through the internal opening and closing mechanism of any of the foregoing embodiments.

[0066] When the side hatch cover 402 is closed, the side hatch cover 402 and the corresponding side wall of the cabin body 3 on which the inner opening and closing mechanism is installed are located in the same plane.

[0067] Embodiment six: This embodiment discloses an inward opening square cabin having the electric opening and closing cabin cover described in the fourth embodiment.

[0068] Embodiment seven: This embodiment discloses an inward opening square cabin having the electric opening and closing cabin cover described in the fifth embodiment.

[0069] The above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

[0070] If the words "first", "second", etc. are used in this document to limit components, those skilled in the art should know that the use of "first" and "second" is only to facilitate the description of the present invention and simplify the description. Unless otherwise stated, the above words have no special meaning.

[0071] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An internal opening and closing mechanism is installed inside the cabin body and located between the cabin body and the cabin cover to achieve the opening and closing of the cabin cover relative to the cabin body, and is characterized in that: The internal opening and closing mechanism includes a main hinge, a rotating shaft, a first connecting rod, a driving mechanism and a force-bearing component. The main hinge includes a main frame body, which is in a V-shaped or V-shaped-like structure. One end and the other end are formed at the opening of the main frame body. A fixed plate is fixedly provided at one end of the main frame body, and the fixed plate is fixedly connected to the hatch cover; the other end of the main frame body is hinged with a second support, and the second support is fixedly connected to the cabin body; a connection hole is provided at the tip of the main frame body. At least two main hinges are arranged along the docking seam of the cabin body and the hatch cover. The rotating shaft passes through the connection holes of each main hinge, and the rotating shaft is rotationally matched with the connection holes; a first connecting rod extending outwards is fixed on the rotating shaft, and the outer end of the first connecting rod is set as a first connection point. The force-bearing component includes a second connecting rod. One end of the second connecting rod is rotatably connected to the first connection point, and the other end of the second connecting rod is hingedly connected to a fourth support with a fixed position. The driving mechanism includes a telescopic unit. One end of the telescopic unit is hingedly connected to a first support with a fixed position, and the other end of the telescopic unit is hingedly connected to the second connecting rod.

2. The internal opening and closing mechanism according to claim 1, characterized in that: Two first connecting rods are arranged on the rotating shaft along its axial direction, and a second connecting rod is connected to the connecting end of each first connecting rod. A third support is also provided at the upper position of the second connecting rod. The third support is fixed between the two second connecting rods, and the other end of the telescopic unit is hingedly connected to the third support.

3. The internal opening and closing mechanism according to claim 2, characterized in that: Flanks extend from both sides of the third support, and the flanks are fixedly connected to the corresponding second connecting rods. Third connection points corresponding to the telescopic unit are distributed on the third support.

4. The internal opening and closing mechanism according to claim 1, wherein: The first support includes upper and lower mounting plates and a vertical rib plate in the middle. The lower mounting plate is fixedly connected to the cabin body, and the upper mounting plate is provided with a first connection point corresponding to one end of the telescopic unit.

5. The internal opening and closing mechanism according to claim 1, characterized in that: The fourth support has two perpendicular mounting surfaces, and the two mounting surfaces of the fourth support are fixedly connected to two surfaces of the cabin body at the same time.

6. The internal opening and closing mechanism according to claim 1, characterized in that: The second support has two perpendicular mounting surfaces, and the two mounting surfaces of the second support are fixedly connected to the cabin body and a support member fixed on the cabin body at the same time.

7. The internal opening and closing mechanism according to any one of claims 1-6, characterized in that: The telescopic unit includes a main cylinder and a plurality of follower cylinders. One end of the main cylinder / follower cylinder is hingedly connected to the first support, and the other end of the main cylinder / follower cylinder is hingedly connected to the third support.

8. The internal opening and closing mechanism according to claim 1, characterized in that: One or more auxiliary hinges are also arranged along the docking seam of the cabin body and the hatch cover. The auxiliary hinges are distributed at positions other than the main hinges. The auxiliary hinge includes an auxiliary frame body, which is in a V-shaped or V-shaped-like structure. One end and the other end are formed at the opening of the auxiliary frame body. A fixed plate is fixedly provided at one end of the auxiliary frame body, and the fixed plate is fixedly installed on the hatch cover; the other end of the auxiliary frame body is hinged with a second support, and the second support is fixedly installed on the cabin body.

9. An electric opening and closing hatch cover, characterized in that: The hatch cover is an upper-opening structure with a symmetrical structure, including two upper hatch covers. Each upper hatch cover is connected to the corresponding cabin body side wall through the internal opening and closing mechanism described in any one of claims 1-8.

10. The electric opening and closing hatch cover according to claim 9, characterized in that: Each upper hatch cover includes a first cover body and a second cover body that form an angle with each other. The first cover body is used to connect to the internal opening and closing mechanism, and the two second cover bodies form the main body of the hatch cover. When the upper hatch cover is closed, the first cover body and the side wall of the cabin body where the internal opening and closing mechanism is installed are in the same plane.

11. The electric opening and closing hatch cover according to claim 10, characterized in that: The angle between the first cover body and the second cover body is between 90 and 120 degrees.

12. The electric opening and closing hatch according to claim 10, characterized in that: Rain shields are provided on one side of the first cover body connected to the cabin body; rain shields are also provided on the closing edge of any second cover body. The rain shield is in a Z-shaped or Z-shaped-like structure, with one side fixed to the first cover body / second cover body and the other side hanging and extending in the direction where rain protection is required.

13. An electric opening and closing hatch cover, characterized in that: The cabin cover is a vertically-opening door structure with a symmetrical structure, including two side cabin covers, and each side cabin cover is connected to the cabin body through the internal opening and closing mechanism described in any one of claims 1-8. When the side cabin cover is closed, the side cabin cover and the side wall of the cabin body where the internal opening and closing mechanism is installed are in the same plane.

14. An inner-opening mobile cabin, characterized in that: It includes the electric opening and closing cabin cover described in any one of claims 9-13.

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