Large shielded door

Abstract

The utility model discloses a large -scale shielded door at least includes: big shielded door leaf, be located on the small door access frame of big shielded door leaf and be suitable for with small door access frame rotation cooperation small shielded door leaf, big shielded door leaf still is connected with the door leaf moving mechanism, and one side end of height direction of small shielded door leaf is with small door access frame rotation connection, and still design has small door fastening mechanism between this small shielded door leaf and small door access frame, the door leaf moving mechanism includes with the bottom support frame of big shielded door leaf link, be used for driving big shielded door leaf and make along its front -back direction movement's first translation component, and be used for driving big shielded door leaf and along its left -right direction movement's second translation component, small door fastening mechanism includes with door frame fastening subassembly of small door access frame connection and with door leaf fastening subassembly of small shielded door leaf connection.

Description

Technical Field

[0001] This utility model relates to the field of shielding equipment technology, and in particular to a large shielding door. Background Technology

[0002] Electromagnetic shielding technology is one of the most important electromagnetic protection technologies. It encloses the area to be protected (either a solid or non-solid shielding room) using a shielding shell (made of conductive or magnetic materials), forming electromagnetic isolation. It primarily utilizes the shielding shell to reflect and absorb electromagnetic energy, thereby blocking or attenuating the propagation of electromagnetic energy between the shielded area and the outside world. Currently, the most mature application is the electromagnetic shielding room, which uses steel plates welded into a shielding shell. Electromagnetic shielding doors are essential equipment in various electromagnetic shielding rooms, such as shielded machine rooms, and their performance directly determines the overall shielding effectiveness of the shielding room.

[0003] The size of the shielded doors varies depending on the personnel and goods entering and exiting different shielded rooms; some are larger, while others are smaller. For larger shielded doors, such as the fully automatic suspended arc-shaped guide rail two-dimensional electromagnetic shielded door disclosed in CN102661113A, the door leaf opens and closes relative to the door frame through a translational movement. However, in practical use, this translational opening and closing process takes time. Therefore, for large shielded doors used only for a few people without large objects, the translational opening and closing method is inefficient, resulting in poor overall flexibility in operation.

[0004] Therefore, given the current situation where existing large platform screen doors only use a sliding mechanism for opening and closing, which results in poor flexibility in actual use, further optimization of the structure of large platform screen doors is needed. Utility Model Content

[0005] The purpose of this invention is to provide a large shielding door to solve the technical problem of improving the flexibility of shielding door use.

[0006] The large shielding door of this utility model is implemented as follows: A large shielding door, comprising at least: A large shielding door leaf, a small door entry / exit frame disposed on the large shielding door leaf, and a small shielding door leaf adapted to rotate with the small door entry / exit frame; The large shielding door is also equipped with a door moving mechanism; and One end of the small shielding door leaf in the height direction is rotatably connected to the small door inlet / outlet frame, and a small door fastening mechanism is also designed between the small shielding door leaf and the small door inlet / outlet frame. The door moving mechanism includes a bottom support frame connected to the large shielded door, a first translation component for driving the large shielded door to move in its front-back direction, and a second translation component for driving the large shielded door to move in its left-right direction. The small door fastening mechanism includes a door frame fastening assembly that mates with the small door entry / exit frame and a door leaf fastening assembly that mates with the small shielding door leaf.

[0007] In an optional embodiment of this utility model, the bottom support frame includes at least a pair of support frames for being fixedly connected to the left and right end faces of the large shielding door to support the large shielding door. The first translation component includes a pair of connecting frames that slide with a pair of support frames, a first rack extending along the front-rear direction of the large shielding door leaf on at least one of the connecting frames, a first drive motor fixedly connected to at least one of the connecting frames, and a first gear connected to the pair of first drive motors; each first gear meshes with a first rack. The second translation component includes a second rack extending in the left-right direction of the large shielding door and located below the large shielding door, a second drive motor fixed on at least one connecting frame, and a second gear connected to the second drive motor and adapted to mesh with the second rack.

[0008] In an optional embodiment of this utility model, at least two reinforcing beams extending laterally along the large shielding door leaf are further provided between the pair of connecting frames; and The reinforcing beam is also equipped with a support plate that connects to the small door's entry / exit frame.

[0009] In an optional embodiment of this utility model, the first translation component further includes a first guide rail structure disposed one-to-one between the support frame and the connecting frame.

[0010] In an optional embodiment of this utility model, the support frame includes a support frame with one end connected to the large shielding door and extending along the front-rear direction of the large shielding door, and an inclined support frame connected to the end of the support frame away from the large shielding door; wherein The supporting frame and the inclined support frame are respectively fixed to the large shielding door leaf through a connecting lug.

[0011] In an optional embodiment of this invention, the second translation component further includes a second guide rail structure that simultaneously slides with the bottom of a pair of connecting frames; The second guide rail structure includes a pair of second guide rails located on both sides of the second rack and parallel to the second rack, and guide wheel structures respectively disposed between the connecting frame and the pair of second guide rails.

[0012] In an optional embodiment of this invention, the dimension of each second guide rail along the left-right direction of the large shielding door is at least three times the dimension of the large shielding door in the left-right direction; and The connecting frame on the left or right side of the large shielding door is also equipped with a cover plate suitable for covering the second guide track of a portion.

[0013] In an optional embodiment of this utility model, the small door inlet / outlet frame fastening assembly includes a pair of small door inlet / outlet frame limiting members spaced apart along the height direction of the small door inlet / outlet frame; each of the small door inlet / outlet frame limiting members is provided with an oblique sliding groove, and the oblique sliding grooves on the pair of small door inlet / outlet frame limiting members are distributed in parallel. The small shielding door fastening assembly includes a pair of fastening shafts spaced apart along the height direction of the small shielding door and adapted to move one-to-one along a pair of inclined slides; a linkage seat connected to the pair of fastening shafts and movably engaged with the small shielding door; and a drive unit connected to the linkage seat and adapted to drive the linkage seat to move up and down along the height direction of the small shielding door. The drive unit includes a door handle that rotates with the small shielding door and a linkage structure located between the door handle and the linkage seat.

[0014] In an optional embodiment of this utility model, the linkage seat is provided with a pair of strip-shaped perforated slots suitable for one-to-one cooperation with a pair of fastening shafts; each of the strip-shaped perforated slots extends along the height direction of the small shielding door leaf; and The small shielding door is also provided with a connecting plate that slides with each of the strip-shaped hollowed-out slots; and Each of the aforementioned strip-shaped hollowed-out slots is equipped with a pair of connecting plates.

[0015] In an optional embodiment of this utility model, the small shielding door leaf is provided with a connecting plate for rotating and engaging with the door handle; and The connecting plate protrudes partially from the side edge of the small shielding door leaf connecting linkage seat, and the door handle is rotatably engaged with the part of the connecting plate that protrudes from the small shielding door leaf.

[0016] By adopting the above technical solution, this utility model has the following beneficial effects: The door leaf moving mechanism of this utility model, applicable to large shielded doors, uses small shielded door leaves designed on the large shielded door leaf. This allows larger items to enter or exit the shielded door by opening the large shielded door leaf relative to the door frame, while individual personnel can enter or exit by opening the small shielded door leaf relative to the small door entry / exit frame. Furthermore, the opening and closing of the small shielded door leaf relative to the small door entry / exit frame can be achieved by rotation, resulting in fast door opening and closing speeds. Therefore, different door leaves can be selected to open to meet different entry / exit needs, thereby improving the overall flexibility of the shielded door's use. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the large shielding door of this utility model; Figure 2 This is a first-view schematic diagram of the door leaf moving mechanism of the large shielding door of this utility model; Figure 3 This is a second-view schematic diagram of the door leaf moving mechanism of the large shielding door of this utility model; Figure 4 This is a third-view schematic diagram of the door leaf moving mechanism of this utility model applicable to large shielding doors; Figure 5 This is a schematic diagram of the small door fastening mechanism of the large shielding door of this utility model; Figure 6 for Figure 5 Enlarged schematic diagram of part A; Figure 7 This is a schematic diagram of the drive unit of the small door fastening mechanism of the large shielding door of this utility model; Figure 8 This is a schematic diagram showing the cooperation between the clamping plate and the linkage seat of the small door fastening mechanism of the large shielding door of this utility model; Figure 9 This is a schematic diagram showing the fit between the fastening shaft and the inclined slide groove of the small door fastening mechanism of the large shielding door of this utility model.

[0018] In the diagram: Door leaf 1, Door frame 2, Support frame 31, Diagonal support frame 32, Connecting lug 33, Connecting frame 34, First rack 35, First drive motor 36, First gear 37, First guide wheel 41, First guide groove 42, First roller 43, Rolling surface 44, Transmission shaft 45, Second rack 51, Second drive motor 52, Second gear 53, Second guide rail 54, Second guide wheel 55, Second guide groove 56, Second roller 5 7. Rolling mating surface 58. Cover plate 6. Reinforcing beam 7. Support plate 8. Small door inlet / outlet frame 200. Small shielding door leaf 100. Small door inlet / outlet frame limiting component 300. Inclined slide groove 301. Transition surface 302. Linkage seat 400. Strip-shaped hollow groove 401. Fastening shaft 500. Connecting plate 600. Clamping plate 601. Door handle 701. Rotating seat 702. First connecting rod 703. Second connecting rod 704. Connecting plate 800. Hinge 900. Detailed Implementation

[0019] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Example 1: Please see Figures 1 to 4As shown, this embodiment provides a large shielding door, comprising at least: a large shielding door leaf 1, a small door access frame 200 disposed on the large shielding door leaf 1, and a small shielding door leaf 100 adapted to rotate with the small door access frame 200. It is understood that the large shielding door leaf 1 is connected to the door frame 2, and the large shielding door leaf 1 achieves opening and closing operations relative to the door frame 2 by translation. The large shielding door leaf 1 is also equipped with a door leaf moving mechanism. One end of the small shielding door leaf 100 in the height direction is rotatably connected to the small door access frame 200, and a small door fastening mechanism is designed between the small shielding door leaf 100 and the small door access frame 200. A hinge 900 can be used to achieve the rotational engagement between the small shielding door leaf 100 and the small door access frame 200. The hinge 900 can be, for example, but not limited to, the dual-axis hinge structure disclosed in publication number CN211777005U.

[0021] Furthermore, it should be noted that the small shielding door leaf 100 occupies a relatively small portion of the overall large shielding door leaf 1. The small shielding door leaf 100 is primarily designed to meet the needs of human entry and exit. In the context of conventional doors, it can be used for situations such as, but not limited to, two adults entering and exiting side-by-side. The specific size range is not absolutely limited in this embodiment. The size of the large shielding door leaf 1 relative to the door frame 2 can be customized to meet the needs of different scenarios; therefore, its size is not absolutely limited in this embodiment either.

[0022] Combining the commonly used large shielding door leaf 1 in conventional technology, it is generally a rectangular large shielding door leaf 1. In this embodiment, the front-back direction of the large shielding door leaf 1 refers to the thickness direction of the large shielding door leaf 1 when it is in a mating state with the door frame 2; the left-right direction of the large shielding door leaf 1 is the direction that is perpendicular to both the thickness and the height of the large shielding door leaf 1. In this embodiment, the large shielding door leaf 1 of the large shielding door is opened and closed relative to the door frame 2 by translation. During this process, since there is a shielding structure between the large shielding door leaf 1 and the door frame 2 that is mating along the thickness direction of the large shielding door leaf 1, the shielding structure can be selected from existing technologies such as, but not limited to, mature technologies formed by the combination of shielding inserts and springs. This embodiment does not make an absolute limitation on the shielding structure. In order to meet the implementation requirements of the shielding structure, the large shielding door leaf 1 needs to generate two translational movements in different directions during the opening or closing process relative to the door frame 2. These two directions are the movement along the thickness direction of the large shielding door leaf 1 and the movement that is perpendicular to both the thickness and the height of the large shielding door leaf 1. Therefore, in order to meet the translation requirements in the two different directions mentioned above, the door moving mechanism in this embodiment is designed as follows: The door moving mechanism includes: a bottom support frame, a first translation component, and a second translation component.

[0023] First, there is the bottom support frame, which includes at least a pair of support frames for fixing to the left and right end faces of the large shielding door 1 to support the large shielding door 1. To improve the reliability and stability of the support frame's support for the large shielding door 1, each support frame includes a support frame 31 with one end connected to the large shielding door 1 and extending along the front-rear direction of the large shielding door 1, and an inclined support frame 32 connected to the end of the support frame 31 away from the large shielding door 1; wherein the support frame 31 and the inclined support frame 32 are respectively fixed to the large shielding door 1 via a connecting lug 33. Based on this structure, it can be understood that the left and right end faces of the large shielding door 1 form a triangular mating structure with the support frame 31 and the inclined support frame 32, thus improving the reliability of the support for the large shielding door 1.

[0024] Secondly, there is the first translation component, which includes a pair of connecting frames 34 that slide with a pair of support frames, a first rack 35 extending along the front-rear direction of the large shielding door 1 and mounted on at least one connecting frame 34, a first drive motor 36 fixedly connected to at least one connecting frame 34, and a first gear 37 connected to the pair of first drive motors 36; each first gear 37 meshes with a first rack 35. The connecting frame 34 is parallel to the support frame 31 and forms a sliding fit between them. In terms of length, the connecting frame 34 is longer than the support frame 31, allowing the connecting frame 34 to slide on the support frame 31. Here, at least two reinforcing beams 7 extending along the left and right directions of the large shielding door are also provided between the optional pair of connecting frames 34. The reinforcing beams 7 are also equipped with support plates 8 that connect with the small door entrance / exit frame. Of course, the support plates 8 are also connected to the large shielding door 1. The design of the support plates 8 allows personnel to step on the support plates 8 when entering and exiting the small door entrance / exit frame 200.

[0025] The first drive motor 36 is vertically connected to the support frame 31 via a connecting bracket. Alternatively, each connecting bracket 34 can be connected to a first drive motor 36, and each connecting bracket 34 can be equipped with a first rack 35. To simplify the structure, each connecting bracket 34 can be equipped with a first rack 35, but one connecting bracket 34 can be connected to a first drive motor 36 while the other is not. In this case, the first drive motor 36 is connected to two first gears 37 via a transmission shaft 45. These two first gears 37 mesh with a first rack 35, thus achieving the effect of one drive motor simultaneously working with two connecting brackets 34.

[0026] Based on the above structure, to improve the stability and reliability of the first translation component during use, the first translation component further includes a first guide rail structure provided one-to-one between the support frame 31 of the support bracket and the connecting frame 34. Referring to the accompanying drawings, in one optional embodiment, the first guide rail structure includes at least a first guide wheel 41 that mates with the support bracket, and a first guide groove 42 on the connecting frame 34 suitable for rolling engagement with the first guide wheel 41. The first guide rail structure also includes a first roller 43 that mates with the support bracket, and a rolling surface 44 on the connecting frame 34 suitable for rolling engagement with the first roller 43. Specifically, the engagement of the first guide wheel 41 and the first guide groove 42 is located on the left or right end face of the connecting frame 34 along the left-right direction of the large shielding door 1, while the engagement of the first roller 43 and the rolling surface 44 is located on the top surface of the connecting frame 34 along the height direction of the large shielding door 1. Therefore, by forming a guiding engagement between the support frame 31 and the connecting frame 34 on two different side end faces of the connecting frame 34, the reliability of the first translation component's operation is improved.

[0027] Furthermore, the second translational assembly includes a second rack 51 extending in the left-right direction along the large shielding door 1 and located below the large shielding door 1, a second drive motor 52 fixed on at least one connecting frame 34, and a second gear 53 connected to the second drive motor 52 and adapted to mesh with the second rack 51. Here, the second drive motor 52 may optionally be connected to the bottom end of the connecting frame 34 via a transition frame.

[0028] Based on the above structure, the second translation component further includes a second guide rail structure that slides and engages with the bottom of a pair of connecting frames 34 simultaneously. Referring to the accompanying drawings, in one optional case, the second guide rail structure includes a pair of second guide rails 54 located on both sides of the second rack 51 and parallel to the second rack 51, and guide wheel structures respectively disposed between the connecting frame 34 and the pair of second guide rails 54. The guide wheel structure includes at least a second guide wheel 55 mating with the connecting frame 34, and a second guide groove 56 on the second guide rail 54 suitable for rolling engagement with the second guide wheel 55. The guide wheel structure also includes a second roller 57 mating with the connecting frame 34, and a rolling engagement surface 58 on the second guide rail 54 suitable for rolling engagement with the second roller 57. The implementation principle of this guide wheel structure can be referenced to the first translation component, whereby the second guide wheel 55 and the second roller 57 act on different side surfaces of the second guide rail 54, thereby achieving guiding engagement on different dimensional surfaces.

[0029] Next, it should be noted that for the large shielding door in this embodiment, the large shielding door leaf 1 needs to be fully opened by translation relative to the door frame 2. When the large shielding door leaf 1 is in the open state, when people or other objects need to enter or exit through the door frame 2, in order to avoid damage to the second rack 51 and the second guide rail 54, the dimension of each second guide rail 54 in the left-right direction of the large shielding door leaf 1 is at least three times the dimension of the large shielding door leaf 1 in the left-right direction. For example, if the dimension of the second guide rail 54 in the left-right direction of the large shielding door leaf 1 is roughly designed to be three times the dimension of the large shielding door leaf 1 in the left-right direction, the second guide rail 54 is divided into three equal parts. Then, the middle area of ​​the second guide rail 54 corresponds to the door frame 2. In this way, the large shielding door leaf 1 can move along the second guide rail 54 to the left or right side of the door frame 2 to achieve the opening effect. Based on this, when the large shielding door 1 moves to the left side of the door frame 2 along the second guide rail 54 to open the door, a cover plate 6 suitable for covering part of the second guide rail 54 is also attached to the connecting frame 34 on the right side of the large shielding door 1. Furthermore, a guide wheel structure, such as between the connecting frame 34 and the second guide rail 54, can be designed between the cover plate 6 and the second guide rail 54, allowing the cover plate 6 to slide along the second guide rail 54. Therefore, when the large shielding door 1 is closed relative to the door frame 2, the cover plate 6 is located on the right side of the large shielding door 1. When the large shielding door 1 moves to the left side of the door frame 2 to open the door, the cover plate 6 moves to the left along with the large shielding door 1. When the large shielding door 1 is fully open relative to the door frame 2, the cover plate 6 is directly facing the front of the door frame 2, covering the second guide rail 54 and the second rack 51 directly opposite the door frame 2. This allows people or other objects to directly step on the cover plate 6.

[0030] Based on the above structure, for the door moving mechanism of this embodiment, the first translation component and the second translation component are set below the large shielding door 1. Compared with the case where they are set above the large shielding door 1, this can reduce the difficulty of manual installation and daily maintenance. In addition, this structure can not only meet the need for moving the large shielding door 1, but also support the bottom of the large shielding door 1. Based on this, even if there is no need to set up components to assist the movement of the large shielding door 1 above the large shielding door 1, it can still ensure that the large shielding door 1 can reliably and stably realize the opening and closing operation.

[0031] Next, it should be noted that the small door fastening mechanism in this embodiment includes a door frame fastening assembly that mates with the small door entry / exit frame and a door leaf fastening assembly that mates with the small shielding door leaf. It is understood that the door frame fastening assembly and door leaf fastening assembly can be selected from existing technologies suitable for small shielding doors that use a rotational mechanism to open and close the door; this embodiment does not impose an absolute limitation on this.

[0032] In summary, for the large shielded door of this embodiment, the design of a small shielded door leaf 100 on the large shielded door leaf 1 allows larger items to enter and exit the door by opening the large shielded door leaf 1 relative to the door frame 2. Conversely, individual personnel can enter and exit by opening the small shielded door leaf 100 relative to the small door entry / exit frame 200. Furthermore, the opening and closing of the small shielded door leaf 100 relative to the small door entry / exit frame 200 can be achieved by rotation, resulting in fast opening and closing speeds. Therefore, different door leaves can be selected to open to meet different entry and exit needs, thereby improving the overall flexibility of the shielded door's use.

[0033] Example 2: Please see Figures 1 to 9 As shown, based on the large shielding door of Embodiment 1, this embodiment takes into account that the small door entry / exit frame 200 is set on the large shielding door leaf 1. Therefore, the overall structure of the door frame fastening assembly and the door leaf fastening assembly needs to be simplified. Thus, an optional implementation is described in detail with reference to the accompanying drawings: Next, let's discuss the specifics. First, the fastening assembly for the small door inlet / outlet frame includes a pair of small door inlet / outlet frame limiting members 300 spaced apart along the height direction of the small door inlet / outlet frame 200. Each small door inlet / outlet frame limiting member 300 is provided with an oblique sliding groove 301, and the oblique sliding grooves 301 on the pair of small door inlet / outlet frame limiting members 300 are distributed in parallel. The groove opening direction of the oblique sliding groove 301 can be upward or downward along the height direction of the small door inlet / outlet frame 200. This embodiment does not make an absolute limitation on this.

[0034] The overall small door entry / exit frame limiting member 300 protrudes from the side end face of the small door entry / exit frame 200 facing the small shielding door leaf 100. The overall small door entry / exit frame limiting member 300 is roughly rectangular in shape, and an inclined sliding groove 301 is formed inside it. The opening of the inclined sliding groove 301 extends to a right-hand corner of the rectangular small door entry / exit frame limiting member 300. Furthermore, the vertical distance between the bottom of the inclined sliding groove 301 and the small door entry / exit frame 200 is less than the vertical distance between the opening of the inclined sliding groove 301 and the small door entry / exit frame 200.

[0035] Secondly, the small shielding door fastening assembly includes a pair of fastening shafts 500 spaced apart along the height direction of the small shielding door 100 and adapted to move one-to-one along a pair of inclined slides 301; a linkage seat 400 connected to the pair of fastening shafts 500 and movably engaged with the small shielding door 100; and a drive unit connected to the linkage seat 400 and adapted to drive the linkage seat 400 to move up and down along the height direction of the small shielding door 100. The drive unit includes a door handle 701 that rotates with the small shielding door 100, and a connecting rod structure disposed between the door handle 701 and the linkage seat 400. When the small shielding door 100 is closed relative to the small door entry / exit frame 200, the fastening shaft 500 moves to the bottom of the inclined slide groove 301. When the small shielding door 100 needs to open relative to the small door entry / exit frame 200, the fastening shaft 500 moves along the depth direction of the inclined slide groove 301 from the bottom of the groove to the opening, until it disengages from the inclined slide groove 301, at which point the small shielding door 100 can open relative to the small door entry / exit frame 200. It should be noted that the fit between the fastening shaft 500 and the inclined slide groove 301 can be a sliding friction fit. Alternatively, rollers, for example but not limited to, can be fitted onto the fastening shaft 500 to allow sliding friction between the fastening shaft 500 and the inclined slide groove 301, thereby improving the smoothness of the opening and closing operation.

[0036] Based on the above structure, it should also be noted that the linkage seat 400 is provided with a pair of strip-shaped perforated slots 401 suitable for one-to-one cooperation with a pair of fastening shafts 500; each strip-shaped perforated slot 401 extends along the height direction of the small shielding door 100. Furthermore, when the small shielding door 100 is in a closed state relative to the small door entry / exit frame 200, each small door entry / exit frame limiting member 300 is inserted into the corresponding strip-shaped perforated slot 401; the dimension of each strip-shaped perforated slot 401 along the height direction of the small shielding door 100 is larger than the dimension of the small door entry / exit frame limiting member 300 along the height direction of the small door entry / exit frame 200. When the small shielding door 100 is in an open state relative to the small door entry / exit frame 200, the small door entry / exit frame limiting member 300 will separate from the strip-shaped perforated slot 401. It is also necessary to explain here that each small door entry / exit frame limiting member 300 has a transition surface 302 on one side edge of the groove opening of the inclined slide groove 301, which is suitable for sliding cooperation with the fastening shaft 500; the transition surface 302 is parallel to the outer wall surface of the small door entry / exit frame 200 facing the small shielding door leaf 100.

[0037] Based on the above, it should also be noted that, regarding the specific method of movable connection between the linkage seat 400 and the small shielding door 100, in conjunction with the accompanying drawings, an optional embodiment is provided on the small shielding door 100, which is also provided with a connecting plate 600 that slides with each strip-shaped hollow groove 401; and each strip-shaped hollow groove 401 is respectively provided with a pair of connecting plates 600. Specifically, each connecting plate 600 is slidably engaged with the linkage seat 400 via a clamping plate. The clamping plate includes a pair of clamping plates 601 that respectively contact two different side end faces of the linkage seat 400. The pair of clamping plates 601 are located on both sides of the strip-shaped hollow groove 401, so that the strip-shaped hollow groove 401 is clamped by the pair of clamping plates 601. The pair of clamping plates 601 are also connected by fasteners that pass through the strip-shaped hollow groove 401, so that the pair of clamping plates 601 can be fixed together with the connecting plate 600. When the linkage seat 400 moves along the height direction of the small shielding door 100 under the action of the drive unit, the linkage seat 400 and the pair of clamping plates 601 form a sliding friction engagement.

[0038] Based on the above structure, it is also necessary to explain that the reason why each strip-shaped hollow groove 401 is equipped with a pair of connecting plates 600 is to limit the maximum range of motion of the linkage seat 400 during the opening and closing process of the small shielding door 100 relative to the small door inlet / outlet frame 200. Referring to the accompanying drawings, in one specific optional implementation, the opening of the inclined slide 301 faces downward. When the small shielding door 100 is closed relative to the small door inlet / outlet frame 200, for each strip-shaped perforated groove 401, a clamping plate 601 corresponding to a connecting plate 600 is located at the lower end of the strip-shaped perforated groove 401, thereby preventing the linkage seat 400 from moving upward along the height direction of the small shielding door 100. During the process of the small shielding door 100 being opened relative to the small door inlet / outlet frame 200, when the small door inlet / outlet frame limiting member 300 is completely disengaged from the strip-shaped perforated groove 401, for each strip-shaped perforated groove 401, a clamping plate 601 corresponding to a connecting plate 600 is located at the top end of the strip-shaped perforated groove 401, thereby preventing the linkage seat 400 from continuing to move downward along the height direction of the small shielding door 100. In other words, the cooperation between the connecting plate 600 and the strip-shaped hollow groove 401 not only limits the movement trajectory of the linkage seat 400, making it only able to move up and down along the height direction of the small shielding door leaf 100, but also limits the maximum angle range of the door handle 701 in the forward and reverse rotation.

[0039] Finally, it should be noted that the small shielding door 100 is provided with a connecting plate 800 for rotating with a door handle 701; and the connecting plate 800 partially protrudes from the side edge of the connecting linkage seat 400 of the small shielding door 100, and the door handle 701 and the part of the connecting plate 800 protruding from the small shielding door 100 are rotatably engaged. A rotating seat 702 is provided between the door handle 701 and the connecting plate 800; the rotating seat 702 is rotatably engaged with the connecting plate 800.

[0040] Based on the above structure, the linkage structure further includes a first link 703 connected to the rotating seat 702 and a second link 704 connected to the first link 703; wherein the end of the second link 704 away from the first link 703 is engaged with the linkage seat 400. The length of the second link 704 is greater than the length of the first link 703. Based on this structure, and considering the perspective shown in the attached drawings, when the small shielding door 100 needs to be gradually opened from a closed state relative to the small door entry / exit frame 200, the rotating seat 702 rotates under the action of the door handle 701. This rotating seat 702 drives one end of the first link 703 to move away from the edge of the small shielding door 100, and then the first link 703 pulls the second link 704. At this time, the linkage seat 400, under the constraint of the connecting plate 600, can only produce a downward movement along the height direction of the small shielding door 100. Conversely, when the small shielding door 100 is to be gradually closed relative to the small door entry / exit frame 200 from the open state, the rotating seat 702 rotates under the action of the door handle 701. The rotating seat 702 will drive one end of the first connecting rod 703 to move towards the side closer to the edge of the small shielding door 100. Then, the first connecting rod 703 pulls the second connecting rod 704. At this time, the linkage seat 400 can only produce an upward movement along the height direction of the small shielding door 100 under the restriction of the connecting plate 600.

[0041] In summary, for the small door fastening mechanism of this embodiment, the forward and reverse rotation of the door handle 701 enables the linkage seat 400 to move up and down along the height direction of the small shielding door 100, and the fastening shaft 500 to enter and leave the inclined slide groove 301 of the small door entry and exit frame limiter 300. This achieves the relative opening and closing of the small shielding door 100 relative to the small door entry and exit frame 200. The overall structure is simple, and the opening and closing operation is flexible and convenient, requiring only manual rotation of the door handle 701.

[0042] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0043] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0046] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0047] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. A large shielding door, characterized in that, include: A large shielding door leaf, a small door entry / exit frame disposed on the large shielding door leaf, and a small shielding door leaf adapted to rotate with the small door entry / exit frame; The large shielding door is also equipped with a door moving mechanism; and One end of the small shielding door leaf in the height direction is rotatably connected to the small door inlet / outlet frame, and a small door fastening mechanism is also designed between the small shielding door leaf and the small door inlet / outlet frame. The door moving mechanism includes a bottom support frame connected to the large shielded door, a first translation component for driving the large shielded door to move in its front-back direction, and a second translation component for driving the large shielded door to move in its left-right direction. The small door fastening mechanism includes a door frame fastening assembly that mates with the small door entry / exit frame and a door leaf fastening assembly that mates with the small shielding door leaf.

2. The large shielding door according to claim 1, characterized in that, The bottom support frame includes at least a pair of support frames for fixing to the left and right end faces of the large shielding door to support the large shielding door. The first translation component includes a pair of connecting frames that slide with a pair of support frames, a first rack extending along the front-rear direction of the large shielding door leaf on at least one of the connecting frames, a first drive motor fixedly connected to at least one of the connecting frames, and a first gear connected to the pair of first drive motors; each first gear meshes with a first rack. The second translation component includes a second rack extending in the left-right direction of the large shielding door and located below the large shielding door, a second drive motor fixed on at least one connecting frame, and a second gear connected to the second drive motor and adapted to mesh with the second rack.

3. The large shielding door according to claim 2, characterized in that, At least two reinforcing beams extending laterally along the large shielding door leaf are also provided between the pair of connecting frames; and The reinforcing beam is also equipped with a support plate that connects to the small door's entry / exit frame.

4. The large shielding door according to claim 2 or 3, characterized in that, The first translation component also includes a first guide rail structure disposed one-to-one between the support frame and the connecting frame.

5. The large shielding door according to claim 2 or 3, characterized in that, The support frame includes a support frame that is connected at one end to the large screen door and extends along the front-rear direction of the large screen door, and an inclined support frame that is connected to the end of the support frame away from the large screen door. in The supporting frame and the inclined support frame are respectively fixed to the large shielding door leaf through a connecting lug.

6. The large shielding door according to claim 2 or 3, characterized in that, The second translation component also includes a second guide rail structure that simultaneously slides with the bottom of a pair of connecting frames; The second guide rail structure includes a pair of second guide rails located on both sides of the second rack and parallel to the second rack, and guide wheel structures respectively disposed between the connecting frame and the pair of second guide rails.

7. The large shielding door according to claim 6, characterized in that, The dimension of each second guide rail along the left-right direction of the large shielding door is at least three times the dimension of the large shielding door in the left-right direction; and The connecting frame on the left or right side of the large shielding door is also equipped with a cover plate suitable for covering the second guide track of a portion.

8. The large shielding door according to claim 1, characterized in that, The small door inlet / outlet frame fastening assembly includes a pair of small door inlet / outlet frame limiting members spaced apart along the height direction of the small door inlet / outlet frame; each of the small door inlet / outlet frame limiting members is provided with an oblique sliding groove, and the oblique sliding grooves on the pair of small door inlet / outlet frame limiting members are distributed in parallel. The small shielding door fastening assembly includes a pair of fastening shafts spaced apart along the height direction of the small shielding door and adapted to move one-to-one along a pair of inclined slides; a linkage seat connected to the pair of fastening shafts and movably engaged with the small shielding door; and a drive unit connected to the linkage seat and adapted to drive the linkage seat to move up and down along the height direction of the small shielding door. The drive unit includes a door handle that rotates with the small shielding door and a linkage structure located between the door handle and the linkage seat.

9. The large shielding door according to claim 8, characterized in that, The linkage seat is provided with a pair of strip-shaped perforated slots suitable for one-to-one engagement with a pair of fastening shafts; each of the strip-shaped perforated slots extends along the height direction of the small shielding door leaf; and The small shielding door is also provided with a connecting plate that slides with each of the strip-shaped hollowed-out slots; and Each of the aforementioned strip-shaped hollowed-out slots is equipped with a pair of connecting plates.

10. The large shielding door according to claim 8, characterized in that, The small shielding door leaf is provided with a connecting plate for rotating with the door handle; and The connecting plate protrudes partially from the side edge of the small shielding door leaf connecting linkage seat, and the door handle is rotatably engaged with the part of the connecting plate that protrudes from the small shielding door leaf.

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