Linkage locking and honeycomb aluminum sandwich panel protective door

Abstract

The invention belongs to the technical field of civil air defense engineering protection equipment, and relates to a linkage locking and honeycomb aluminum sandwich plate protection door. The linkage lock comprises a first lock seat, a first lock head, a second lock seat, a second lock head, a driving plate and a linkage rod; the first lock seat and the second lock seat are both installed on the base body, the first lock head is in sliding fit with the first lock seat, the second lock head is hinged to the second lock seat, a pin shaft is arranged on the first lock head, and a driving part is arranged on the second lock head; the middle of the driving plate is hinged to the base body, a sliding groove is formed in the first end of the driving plate, and the pin shaft is located in the sliding groove and is in sliding fit with the sliding groove; the first end of the linkage rod is hinged to the second lock head, and the second end of the linkage rod is hinged to the second end of the driving plate. The honeycomb aluminum sandwich plate protective door comprises a door frame, a door leaf, hinges and a linkage lock. The linkage locking is high in reliability, smooth in action and easy to operate. The honeycomb aluminum sandwich panel protective door has the characteristics of light weight and high structural strength.

Description

Technical Field

[0001] The present invention belongs to the technical field of civil air defense engineering protection equipment, and in particular, the present invention relates to a linkage locking and honeycomb aluminum sandwich panel protection door. Background Art

[0002] As the core component of civil air defense construction, civil air defense projects are an important guarantee for the effective fulfillment of missions. Protective doors are the most important protective equipment at the entrances and exits of various protective projects, and are widely used in protective projects such as national civil air defense and military tunnel and cave projects. Locking is an important device on protective doors and is the key to ensuring the reliability of protective door locking.

[0003] There are many examples of existing locking structures. For example, in the patent application document with application number 202020866332.9, application date May 22, 2020, and invention name "A new type of civil air defense door locking device", a locking device is mentioned. Specifically, the locking device includes a lock head, a fixed shaft, a pin shaft, a device body, an inner handle and other components. When in use, the inner handle or the outer handle is moved upward, and the two lock heads can be driven to rotate through the device body to open the lock. The inner handle or the outer handle is moved downward, and the two lock heads can be driven to rotate through the device body to lock the lock.

[0004] In the above locking structure, only one side of the protective door (generally the left or right side) can be locked or unlocked, and two adjacent sides of the protective door (such as the left side and the top) cannot be locked or unlocked at the same time, so the reliability of the locking is difficult to effectively ensure. In addition, the existing protective doors are mainly steel structures and reinforced concrete structures, and there are also shortcomings such as the door body is bulky and difficult to open and maintain. Summary of the invention

[0005] In order to at least partially solve the above problems, the present invention provides a linkage locking and honeycomb aluminum sandwich panel protective door, and its technical solution is as follows:

[0006] A linkage lock comprises a first lock seat, a first lock head, a second lock seat, a second lock head, a driving plate and a linkage rod; the first lock seat and the second lock seat are both installed on a base, the first lock head is slidably matched with the first lock seat, the second lock head is hingedly connected with the second lock seat, a pin is provided on the first lock head, and a driving part is provided on the second lock head; the middle part of the driving plate is hingedly connected to the base, the first end of the driving plate is provided with a slide groove, the pin shaft is located in the slide groove and slidably matched with the slide groove; the first end of the linkage rod is hingedly connected to the second lock head, and the second end of the linkage rod is hingedly connected to the second end of the driving plate.

[0007] The linked locking as described above is further preferably: the first lock head slides in the vertical direction to lock or unlock the top edge of the base; the second lock head rotates around the horizontal axis to lock or unlock the side edge of the base; when the first lock head locks the base, the pin shaft abuts against the first end of the slide groove; when the first lock head unlocks the base, a gap is provided between the pin shaft and the second end of the slide groove.

[0008] The interlocking lock as described above is further preferably: the horizontal spacing between the hinge point of the drive plate on the base and the hinge point of the second lock head on the second lock seat is L1, and the vertical spacing is L2; ​​the spacing between the hinge point at the first end of the linkage rod and the hinge point of the second lock head on the second lock seat is L3; the spacing between the hinge point at the first end of the linkage rod and the hinge point at the second end of the linkage rod is L4; the spacing between the hinge point of the drive plate on the base and the hinge point at the second end of the drive plate is L5; the spacing between the hinge point of the drive plate on the base and the first end of the slide slot is L6, and the length of the slide slot is L7; the ratio of L1:L2:L3:L4:L5:L6:L7 is 22:50:15:32:20:16:8; the stroke of the first lock head is L8, and the ratio of L6:L8 is greater than 8:9.

[0009] The linked locking as described above is further preferably: it also includes: a third lock seat, a third lock head, a fourth lock seat, a fourth lock head and a connecting rod; the third lock seat and the fourth lock seat are both installed on the base, the third lock head is hingedly connected to the third lock seat, and the fourth lock head is hingedly connected to the fourth lock seat; the third lock head is provided with an inner handle, and the fourth lock head is provided with a driven part; the first end of the connecting rod is hingedly connected to the driving part, the second end of the connecting rod is hingedly connected to the driven part, and the middle end of the connecting rod is hingedly connected to the inner handle; the middle end of the connecting rod is provided with a limiting groove, and the inner handle is located in the limiting groove.

[0010] A honeycomb aluminum sandwich panel protective door, comprising a door frame, a door leaf, a hinge and the linkage lock; the door frame is installed on a wall, one side of the door leaf is connected to the door frame through the hinge, and the linkage lock is installed on the door leaf; the door leaf comprises an outer panel, an inner panel, a side panel, a transverse reinforcement plate, a longitudinal reinforcement plate and a honeycomb aluminum filling block; the outer panel is located on the outer side of the door leaf, the inner panel is located on the inner side of the door leaf, and the side panel is used to connect the edge of the outer panel and the edge of the inner panel; the transverse reinforcement plate is respectively connected to the outer panel and the inner panel, and the longitudinal reinforcement plate is respectively connected to the outer panel and the inner panel; there are multiple transverse reinforcement plates and longitudinal reinforcement plates, which divide the interior of the door leaf into multiple rectangular spaces, and the honeycomb aluminum filling blocks are filled in the rectangular spaces.

[0011] The honeycomb aluminum sandwich panel protective door as described above is further preferably: the wall thickness of the outer panel, the inner panel, the side panel, the transverse reinforcement plate and the longitudinal reinforcement plate are all 3 mm, and the material is 7005 aluminum alloy; the honeycomb hole size of the honeycomb aluminum filling block is a circumscribed circle of 12 mm, a side length of 6 mm, and a wall thickness of 0.15 mm; the axis of the honeycomb hole of the honeycomb aluminum filling block is perpendicular to the outer panel and the inner panel.

[0012] The honeycomb aluminum sandwich panel protective door as described above is further preferably: further comprising a sealed lifting beam mechanism, the sealed lifting beam mechanism comprising a bearing seat, a reducer, a transmission shaft, a hinge support, a rocker, a beam body, a crank and a connecting rod; the bearing seat and the reducer are both mounted on the door leaf, the first end of the transmission shaft is rotatably connected to the bearing seat, and the second end of the transmission shaft is transmission-connected to the reducer; the hinge support is mounted on the door leaf, the rocker is hingedly connected to the hinge support, and the beam body is mounted on the rocker; the crank is mounted on the transmission shaft, the first end of the connecting rod is hingedly connected to the crank, and the second end of the connecting rod is hingedly connected to the rocker.

[0013] The honeycomb aluminum sandwich panel protective door as described above is further preferably characterized in that: the number of each of the bearing seat, the transmission shaft, the hinge support, the rocker, the crank and the connecting rod is two and they are symmetrically distributed on the door leaf; the reducer is provided with a rocker, and the reducer is a worm gear reducer.

[0014] The honeycomb aluminum sandwich panel protective door as described above is further preferably: a first sealing strip is installed on the door frame, and an embedding plate is installed on the door leaf, and the embedding plate is used to extrude the first sealing strip; the first sealing strip is in an inverted U-shape, and the embedding plate is in a mouth shape; a second sealing strip and a third sealing strip are provided on the beam body, the second sealing strip is sealingly matched with the door frame, and the third sealing strip is sealingly matched with the embedding plate.

[0015] The honeycomb aluminum sandwich panel protective door as described above is further preferably configured such that: the hinge comprises an upper hinge and a lower hinge; the hinge holes of the upper hinge and the lower hinge are both oblong holes; and a one-way thrust bearing is installed on the lower hinge.

[0016] It can be seen from the analysis that compared with the prior art, the advantages and beneficial effects of the present invention are:

[0017] In the interlocking lock of the present invention, the first lock and the second lock act synchronously, which can realize the synchronous locking or unlocking of two adjacent sides of the base, ensuring reliability. In addition, the first lock realizes locking or unlocking by sliding, and when in action, the contact surface with structures such as the door body and / or the locking box is only a line, which makes the action smooth and easy to operate.

[0018] In the honeycomb aluminum sandwich panel protective door of the present invention, the weight of the door leaf is greatly reduced compared with the traditional steel structure protective door and concrete protective door, and the transportation cost and installation cost are significantly reduced; moreover, honeycomb aluminum is lightweight and high-strength, has good impact resistance, good anti-fragmentation effect, good energy absorption effect and good toughness, and can have the same resistance performance as the steel structure protective door and concrete protective door under the premise of reducing the weight of the door leaf; in addition, a plurality of criss-crossing longitudinal reinforcement plates and transverse reinforcement plates are provided in the door leaf, which can further improve the structural strength of the door leaf. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The structure diagram of the linkage lock of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 2 The structure diagram of the linkage lock of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 3 It is a transmission ratio schematic diagram of the linkage locking of the present invention;

[0022] Figure 4 The structure diagram of the linkage lock of the present invention is shown in FIG. Figure 3 ;

[0023] Figure 5 For the present invention Figure 4 Sectional view at AA;

[0024] Figure 6 For the present invention Figure 4 Cross-sectional view at BB;

[0025] Figure 7 For the present invention Figure 4 Cross-sectional view at CC;

[0026] Figure 8 For the present invention Figure 4 Sectional view at DD;

[0027] Fig. 9 It is a schematic structural diagram of the honeycomb aluminum sandwich panel protective door of the present invention;

[0028] Fig.10 For the present invention Fig. 9 Cross-sectional view at EE;

[0029] Fig.11 For the present invention Fig.10 A partial enlarged view at F;

[0030] Fig.12 For the present invention Fig.10 A local enlarged view at G;

[0031] Fig.13 It is a structural schematic diagram of the door leaf of the present invention;

[0032] Fig.14 It is a structural schematic diagram of the sealing lifting beam mechanism of the present invention;

[0033] Fig.15 It is a structural schematic diagram of the upper hinge of the present invention;

[0034] Fig.16 It is a structural schematic diagram of the lower hinge of the present invention;

[0035] Fig.17 For the present invention Fig.16 Top view of the .

[0036] In the figure: 1-first lock; 2-first lock seat; 3-driving plate; 4-slide groove; 5-pin shaft; 6-linking rod; 7-second lock seat; 8-second lock; 9-driving part; 10-third lock seat; 11-third lock; 12-inner handle; 13-fourth lock seat; 14-fourth lock; 15-driven part; 16-connecting rod; 17-outer handle; 18-door leaf; 19-upper hinge; 20-lower hinge; 21-beam; 22-side panel; 23-outer panel; 24-transverse reinforcement plate; 25-honeycomb aluminum filling block; 26-inner panel; 27-door frame; 28-embedded plate; 29-first sealing strip; 30-connecting rod; 31-hinge support; 32-rocker; 33-third sealing strip; 34-longitudinal reinforcement plate; 35-bearing seat; 36-transmission shaft; 37-reducer; 38-crank. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For example, they can be fixed connections or detachable connections; they can be directly connected or indirectly connected through intermediate components. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0039] Please refer to Figures 1 to 17 ,in, Figure 1 The structure diagram of the linkage lock of the present invention is shown in FIG. Figure 1 ; Figure 2 The structure diagram of the linkage lock of the present invention is shown in FIG. Figure 2 ; Figure 3 It is a transmission ratio schematic diagram of the linkage locking of the present invention; Figure 4 The structure diagram of the linkage lock of the present invention is shown in FIG. Figure 3 ; Figure 5 For the present invention Figure 4 Sectional view at AA; Figure 6 For the present invention Figure 4 Cross-sectional view at BB; Figure 7 For the present invention Figure 4 Cross-sectional view at CC; Figure 8 For the present invention Figure 4 Sectional view at DD; Fig. 9 It is a schematic structural diagram of the honeycomb aluminum sandwich panel protective door of the present invention; Fig.10 For the present invention Fig. 9 Cross-sectional view at EE; Fig.11 For the present invention Fig.10 A partial enlarged view at F; Fig.12 For the present invention Fig.10 A local enlarged view at G; Fig.13 It is a structural schematic diagram of the door leaf of the present invention; Fig.14 It is a structural schematic diagram of the sealing lifting beam mechanism of the present invention; Fig.15 It is a structural schematic diagram of the upper hinge of the present invention; Fig.16 It is a structural schematic diagram of the lower hinge of the present invention; Fig.17 For the present invention Fig.16 Top view of the .

[0040] like Figure 1 and Figure 2As shown, in one embodiment of the present invention, a linkage lock is provided. Specifically, the linkage lock comprises a first lock seat 2, a first lock head 1, a second lock seat 7, a second lock head 8, a drive plate 3 and a linkage rod 6. The first lock seat 2 and the second lock seat 7 are both mounted on a base (e.g., a door leaf 18), the first lock head 1 is slidably matched with the first lock seat 2, the second lock head 8 is hingedly connected with the second lock seat 7, a pin shaft 5 is provided on the first lock head 1, and a driving part 9 is provided on the second lock head 8. The middle part of the drive plate 3 is hingedly connected with the base (e.g., a door leaf 18), the first end of the drive plate 3 is provided with a slide groove 4, the pin shaft 5 is located in the slide groove 4, and is slidably matched with the slide groove 4. The first end of the linkage rod 6 is hingedly connected with the second lock head 8, and the second end of the linkage rod 6 is hingedly connected with the second end of the drive plate 3.

[0041] In this embodiment, the driving part 9 drives the second lock 8 to rotate under the action of external force, and the second lock 8 can achieve locking or unlocking (locking or unlocking one side of the base) when rotating; at the same time, the second lock 8 drives the driving plate 3 to rotate through the linkage rod 6, and the driving plate 3 can drive the pin 5 to slide through the slide groove 4, thereby making the first lock 1 slide, and achieve locking or unlocking of the first lock 1 (locking or unlocking an adjacent side of the above-mentioned side of the base). In this embodiment, the first lock 1 and the second lock 8 act synchronously, and can achieve synchronous locking or unlocking of two adjacent sides of the base, ensuring reliability. In addition, the first lock 1 achieves locking or unlocking by sliding, and the contact surface with the door body and / or the locking box and other structures during operation is only a line, and the operation is smooth and easy to operate.

[0042] Furthermore, in this embodiment, the first lock head 1 slides in the vertical direction to lock or unlock the top edge of the base. The second lock head 8 rotates around the horizontal axis to lock or unlock the side edge of the base. The first lock head 1 and the second lock head 8 act in conjunction to achieve synchronous locking or unlocking of the side edge and top edge of the base (e.g., door leaf 18).

[0043] Furthermore, in this embodiment, when the first lock 1 locks the base, the pin 5 abuts against the first end of the slide slot 4, which can ensure the reliability of the first lock 1 when locked. When the first lock 1 unlocks the base, a gap is provided between the pin 5 and the second end of the slide slot 4, which can leave enough room for the first lock 1 to move.

[0044] like Figure 1 and Figure 3As shown, in one embodiment of the present invention, the horizontal spacing between the hinge point of the driving plate 3 on the base and the hinge point of the second lock head 8 on the second lock seat 7 is L1, and the vertical spacing is L2. The distance between the hinge point at the first end of the linkage rod 6 and the hinge point of the second lock head 8 on the second lock seat 7 is L3. The distance between the hinge point at the first end of the linkage rod 6 and the hinge point at the second end of the linkage rod 6 is L4. The distance between the hinge point of the driving plate 3 on the base and the hinge point at the second end of the driving plate 3 is L5. The distance between the hinge point of the driving plate 3 on the base and the first end of the slide 4 is L6, and the length of the slide 4 is L7. The ratio of L1:L2:L3:L4:L5:L6:L7 is 22:50:15:32:20:16:8, the stroke of the first lock head 1 is L8, and the ratio of L6:L8 is greater than 8:9. Under the design of this ratio, the second lock head 8 rotates from a locked state to an unlocked state at an angle of 90°, and the first lock head 1 is synchronously unlocked when rotated 90°; the second lock head 8 rotates from an unlocked state to a locked state at an angle of 90°, and the first lock head 1 is synchronously locked when rotated 90°.

[0045] like Figure 1 , Figures 4 to 8 As shown, in one embodiment of the present invention, a third lock seat 10, a third lock head 11, a fourth lock seat 13, a fourth lock head 14 and a connecting rod 16 are also included. Specifically, the third lock seat 10 and the fourth lock seat 13 are both installed on the base, the third lock head 11 is hingedly connected to the third lock seat 10, and the fourth lock head 14 is hingedly connected to the fourth lock seat 13. The third lock head 11 is provided with an inner handle 12, and the fourth lock head 14 is provided with a driven part 15. The first end of the connecting rod 16 is hingedly connected to the driving part 9, the second end of the connecting rod 16 is hingedly connected to the driven part 15, and the middle end of the connecting rod 16 is hingedly connected to the inner handle 12. A limiting groove is provided at the middle end of the connecting rod 16, and the inner handle 12 is located in the limiting groove. When in use, the inner handle 12 is rotated, and the inner handle 12 drives the driving part 9 and the driven part 15 to rotate through the connecting rod 16, so as to drive the first lock head 1, the second lock head 8, the third lock head 11, and the fourth lock head 14 to lock or unlock synchronously. In this embodiment, by providing the third lock seat 10, the third lock head 11, the fourth lock seat 13, the fourth lock head 14 and the connecting rod 16, the effective working length of the linkage lock on the side edge of the base can be extended, thereby improving the reliability of the lock. The inner handle 12 is located in the limit groove, and the limit groove can limit the range of motion of the inner handle 12 (preferably limited to ±45° based on the horizontal line).

[0046] Furthermore, in this embodiment, an outer handle 17 is also included. The outer handle 17 is coaxially arranged with the inner handle 12. The inner handle 12 and the outer handle 17 are respectively located on both sides of the base body, so that when in use, the locking or unlocking operation of the linkage lock can be performed from the outside of the base body and / or the inside of the base body.

[0047] Furthermore, in the present embodiment, in order to ensure the smoothness of the linked locking activity, washers are installed at the installation positions of the first lock seat 2, the second lock head 8, the third lock head 11, and the fourth lock head 14, so that the symmetry planes of the first lock head 1, the second lock head 8, the third lock head 11, the fourth lock head 14, the drive plate 3, the linkage rod 6, and the connecting rod 16 are located in the same plane, and the movement under force is smoother; a copper sleeve is arranged between the first lock head 1 and the first lock seat 2, and the first lock head 1 slides more accurately and smoothly in the copper sleeve.

[0048] Based on the above linkage locking, the present invention also provides a honeycomb aluminum sandwich panel protective door. Since the honeycomb aluminum sandwich panel protective door includes the linkage locking, the honeycomb aluminum sandwich panel protective door has all the advantages of the above linkage locking embodiments.

[0049] like Fig. 9 , Fig.10 and Fig.13 As shown, in one embodiment of the present invention, a honeycomb aluminum sandwich panel protective door is provided. Specifically, the honeycomb aluminum sandwich panel protective door includes a door frame 27, a door leaf 18, a hinge and a linkage lock. The door frame 27 is installed on the wall, one side of the door leaf 18 is connected to the door frame 27 through a hinge, and the linkage lock is installed on the door leaf 18. Among them, the door leaf 18 includes an outer panel 23, an inner panel 26, a side panel 22, a transverse reinforcement plate 24, a longitudinal reinforcement plate 34 and a honeycomb aluminum filling block 25. The outer panel 23 is located on the outer side of the door leaf 18, the inner panel 26 is located on the inner side of the door leaf 18, the side panel 22 connects the edge of the outer panel 23 and the edge of the inner panel 26, and the outer panel 23, the inner panel 26 and the side panel 22 enclose a rectangular cavity. The transverse reinforcement plate 24 is respectively connected to the outer panel 23 and the inner panel 26, the longitudinal reinforcement plate 34 is respectively connected to the outer panel 23 and the inner panel 26, and the transverse reinforcement plate 24 and the longitudinal reinforcement plate 34 are arranged perpendicular to each other. There are multiple transverse reinforcing plates 24 and multiple longitudinal reinforcing plates 34, which can divide the rectangular cavity inside the door leaf 18 into multiple rectangular spaces, and the honeycomb aluminum filling blocks 25 are filled in the rectangular spaces.

[0050] In the present embodiment, the structure of the door leaf 18 is that a honeycomb aluminum filling block 25 is filled between the inner panel 26 and the outer panel 23. Compared with traditional steel structure protective doors and concrete protective doors, the weight is greatly reduced, and the transportation cost and installation cost are significantly reduced; moreover, honeycomb aluminum is lightweight and high-strength, and has good impact resistance, good anti-fragmentation effect, good energy absorption effect and good toughness. It can have the same resistance performance as steel structure protective doors and concrete protective doors while reducing the weight of the door leaf 18; in addition, a plurality of criss-crossing longitudinal reinforcement plates 34 and transverse reinforcement plates 24 are provided in the door leaf 18, which can further improve the structural strength of the door leaf 18.

[0051] Furthermore, in this embodiment, the wall thickness of the outer panel 23, the inner panel 26, the side panel 22, the transverse reinforcing plate 24, and the longitudinal reinforcing plate 34 are all 3 mm, and the material is 7005 aluminum alloy. The honeycomb hole size of the honeycomb aluminum filling block 25 is 12 mm in circumscribed circle, 6 mm in side length, and 0.15 mm in wall thickness; the axis of the honeycomb hole of the honeycomb aluminum filling block 25 is perpendicular to the outer panel 23 and the inner panel 26.

[0052] like Fig. 9 , Fig.12 and Fig.14 As shown, in one embodiment of the present invention, a sealed lifting beam mechanism is also included, which can seal the gap between the door leaf 18 and the door frame 27 at the bottom. Specifically, the sealed lifting beam mechanism includes a bearing seat 35, a reducer 37, a transmission shaft 36, a hinge support 31, a rocker 32, a beam body 21, a crank 38 and a connecting rod 30. Among them, the bearing seat 35 and the reducer 37 are both installed on the door leaf 18, the first end of the transmission shaft 36 is rotatably connected to the bearing seat 35, and the second end of the transmission shaft 36 is transmission-connected to the reducer 37. The hinge support 31 is installed on the door leaf 18, the rocker 32 is hingedly connected to the hinge support 31, and the beam body 21 is installed on the rocker 32. The crank 38 is installed on the transmission shaft 36, the first end of the connecting rod 30 is hingedly connected to the crank 38, and the second end of the connecting rod 30 is hingedly connected to the rocker 32. When in use, the transmission shaft 36 is driven to rotate through the reducer 37, which can then drive the crank 38 to rotate. The crank 38 drives the rocker 32 to rotate through the connecting rod 30, which can then drive the beam body 21 to rotate around the hinge support 31, thereby achieving the effect of the beam body 21 sealing the gap between the door leaf 18 and the door frame 27, or making the beam body 21 separate from the door frame 27, so as to facilitate the opening of the door leaf 18.

[0053] Furthermore, in this embodiment, the bearing seat 35, the transmission shaft 36, the hinge support 31, the rocker 32, the crank 38, and the connecting rod 30 are all two and symmetrically distributed on the door leaf 18. The two rockers 32 are connected to the beam body 21 at both ends of the beam body 21. When driving the beam body 21 to move, the sealed lifting beam mechanism has the characteristic of balanced force. Preferably, a crank is provided on the reducer 37, and the reducer 37 is a worm gear reducer 37. When in use, the reducer 37 can be driven to rotate by the crank, thereby manipulating the beam body 21.

[0054] like Figures 10 to 12As shown, in an embodiment of the present invention, in order to seal the gap between the door leaf 18 and the door frame 27, a first sealing strip 29 is installed on the door frame 27, and a pressing plate 28 is installed on the door leaf 18. During use, the pressing plate 28 presses the first sealing strip 29, and the first sealing strip 29 is deformed under pressure and can be completely attached to the pressing plate 28. The first sealing strip 29 is in an inverted U shape, and the pressing plate 28 is in a square shape, so as to seal the top gap, left gap, and right gap between the door leaf 18 and the door frame 27. A second sealing strip and a third sealing strip 33 are provided on the beam body 21. The second sealing strip is in sealing cooperation with the door frame 27, and the third sealing strip 33 is in sealing cooperation with the pressing plate 28, so as to seal the bottom gap between the door frame 27 and the door leaf 18.

[0055] As Fig. 9 , Figures 15 to 17 As shown, in an embodiment of the present invention, the hinge includes an upper hinge 19 and a lower hinge 20; the hinge holes of the upper hinge 19 and the lower hinge 20 are both oblong holes, which can improve the degree of freedom of the door leaf 18 during rotation and facilitate the opening and closing of the door leaf 18. At the same time, the linkage locks are arranged in pairs and are respectively installed on the left and right sides of the door leaf 18 (a lock box is installed on the door frame 27, and the lock box cooperates with the linkage lock to lock). Preferably, a one-way thrust bearing is installed on the lower hinge 20, which can play a load-bearing role.

[0056] As is known by technical common sense, the present invention can be implemented by other embodiments that do not depart from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

1. A linkage lock, characterized in that: include: A first lock seat, a first lock head, a second lock seat, a second lock head, a drive plate and a linkage rod; The first lock seat and the second lock seat are both installed on the base, the first lock head is slidably matched with the first lock seat, the second lock head is hingedly connected with the second lock seat, the first lock head is provided with a pin shaft, and the second lock head is provided with a driving part; The middle part of the driving plate is hingedly connected to the base, the first end of the driving plate is provided with a slide groove, the pin shaft is located in the slide groove and slidably cooperates with the slide groove; The first end of the linkage rod is hingedly connected to the second lock head, and the second end of the linkage rod is hingedly connected to the second end of the driving plate.

2. The linkage lock according to claim 1, characterized in that: The first lock head slides in a vertical direction to lock or unlock the top edge of the base; The second lock head rotates around a horizontal axis to lock or unlock the side edge of the base; When the first lock locks the base, the pin abuts against the first end of the slide slot; When the first lock head unlocks the base, a gap is provided between the pin shaft and the second end of the slide slot.

3. The linkage lock according to claim 1, characterized in that: The horizontal spacing between the hinge point of the driving plate on the base and the hinge point of the second lock head on the second lock seat is L1, and the vertical spacing is L2; The distance between the hinge point at the first end of the linkage rod and the hinge point of the second lock head on the second lock seat is L3; The distance between the hinge point at the first end of the linkage rod and the hinge point at the second end of the linkage rod is L4; The distance between the hinge point of the driving plate on the base and the hinge point at the second end of the driving plate is L5; The distance between the hinge point of the driving plate on the base and the first end of the slide slot is L6, and the length of the slide slot is L7; The ratio of L1:L2:L3:L4:L5:L6:L7 is 22:50:15:32:20:16:8; The stroke of the first lock is L8, and the ratio of L6:L8 is greater than 8:

9.

4. The linkage lock according to claim 1, characterized in that: It also includes a third lock seat, a third lock head, a fourth lock seat, a fourth lock head and a connecting rod; The third lock seat and the fourth lock seat are both installed on the base, the third lock head is hingedly connected to the third lock seat, and the fourth lock head is hingedly connected to the fourth lock seat; The third lock is provided with an inner handle, and the fourth lock is provided with a driven part; The first end of the connecting rod is hingedly connected to the driving part, the second end of the connecting rod is hingedly connected to the driven part, and the middle end of the connecting rod is hingedly connected to the inner handle; A limiting groove is provided at the middle end of the connecting rod, and the inner handle is located in the limiting groove.

5. A honeycomb aluminum sandwich panel protective door, characterized in that: include: Door frame, door leaf, hinge and the linkage lock as claimed in any one of claims 1 to 4; The door frame is installed on the wall, one side of the door leaf is connected to the door frame through the hinge, and the linkage lock is installed on the door leaf; The door leaf comprises an outer panel, an inner panel, a side panel, a transverse reinforcement plate, a longitudinal reinforcement plate and a honeycomb aluminum filling block; The outer panel is located on the outer side of the door leaf, the inner panel is located on the inner side of the door leaf, and the side panel is used to connect the edge of the outer panel and the edge of the inner panel; The transverse reinforcing plates are respectively connected to the outer panel and the inner panel, and the longitudinal reinforcing plates are respectively connected to the outer panel and the inner panel; There are multiple transverse reinforcing plates and multiple longitudinal reinforcing plates, which divide the interior of the door leaf into multiple rectangular spaces, and the honeycomb aluminum filling blocks are filled in the rectangular spaces.

6. The honeycomb aluminum sandwich panel protective door according to claim 5, characterized in that: The outer panel, the inner panel, the side panel, the transverse reinforcing plate, and the longitudinal reinforcing plate are all 3 mm thick and made of 7005 aluminum alloy; The honeycomb hole size of the honeycomb aluminum filling block is 12mm in circumscribed circle, 6mm in side length and 0.15mm in wall thickness; The axes of the honeycomb holes of the honeycomb aluminum filling block are perpendicular to the outer panel and the inner panel.

7. The protective door made of honeycomb aluminum sandwich panels according to claim 5, characterized in that: It also includes a sealed lifting beam mechanism, which includes a bearing seat, a reducer, a transmission shaft, a hinge support, a rocker, a beam body, a crank and a connecting rod; The bearing seat and the reducer are both mounted on the door leaf, the first end of the transmission shaft is rotatably connected to the bearing seat, and the second end of the transmission shaft is drivingly connected to the reducer; The hinge support is installed on the door leaf, the rocker is hingedly connected to the hinge support, and the beam is installed on the rocker; The crank is mounted on the transmission shaft, the first end of the connecting rod is hingedly connected to the crank, and the second end of the connecting rod is hingedly connected to the rocker.

8. The protective door made of honeycomb aluminum sandwich panels according to claim 7, characterized in that: The bearing seat, the transmission shaft, the hinge support, the rocker, the crank, and the connecting rod are all in pairs, and are symmetrically distributed on the door leaf; The reducer is provided with a crank handle, and the reducer is a worm gear reducer.

9. The protective door made of honeycomb aluminum sandwich panels according to claim 7, characterized in that: A first sealing strip is installed on the door frame, and an embedding plate is installed on the door leaf, wherein the embedding plate is used to squeeze the first sealing strip; The first sealing strip is in an inverted U-shape, and the embedded pressure plate is in a mouth shape; The beam body is provided with a second sealing strip and a third sealing strip, the second sealing strip is in sealing cooperation with the door frame, and the third sealing strip is in sealing cooperation with the embedded pressure plate.

10. The honeycomb aluminum sandwich panel protective door according to claim 5, characterized in that: The hinge includes an upper hinge and a lower hinge; The reaming holes of the upper hinge leaf and the lower hinge leaf are both oblong holes; A one-way thrust bearing is installed on the lower hinge.

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