A high-resistance lightweight protective door

Abstract

This invention discloses a high-resistance lightweight protective door, comprising a door frame, door body, drive device, fixing device, vertical transmission column, horizontal transmission column, connecting device, door lock mechanism, push rod mechanism, arch corners, and pull plates. Vertical reinforcing grilles are fixedly connected between the perforated inner arch column, inner arch plate, and pull plates, and are arranged in a non-uniform and reasonable manner to enhance resistance. The overall design employs key technologies such as structural design, reasonable layout, and shock absorption design, significantly improving the lightweight of the protective door while meeting resistance requirements. Furthermore, the door drive device is located on the inner side of the door leaf, effectively preventing damage to the drive device while the door body remains unaffected under strong shock waves. A modular design concept is adopted to solve the technical problems of existing electrically controlled protective doors, such as bulkiness, difficult installation and debugging, cumbersome manual / electric switchover, and low reliability.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof door technology, specifically to a high-resistance lightweight protective door. Background Technology

[0002] Explosion-proof doors are primarily installed in important buildings and passageways, their importance self-evident. However, current explosion-proof doors almost entirely rely on the strength of the metal itself to resist explosions and other damage. While offering strong protective capabilities, they are generally extremely heavy, resulting in very high manufacturing costs. Furthermore, current explosion-proof doors typically cannot freely switch between manual and electric drive, making it difficult to close them quickly under extreme conditions, thus leaving many safety issues unresolved. Regarding locks, current explosion-proof doors generally require locking the main door and then locking it separately, a cumbersome and time-consuming process that cannot be quickly locked under extreme conditions, failing to guarantee safety in such situations. Summary of the Invention

[0003] The purpose of this invention is to provide a high-resistance, lightweight protective door to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-resistance lightweight protective door, comprising a door frame, a door body, a drive device, a fixing device, a vertical transmission column, a horizontal transmission column, a connecting device, a door lock mechanism, and a push rod mechanism, wherein the outward-facing side of the door body has an arched structure, the door frame and the door body are rotatably connected, the drive device is provided on the upper left side of the door body, and several fixing devices are respectively provided on the upper, lower, left, and right sides of the door body near the middle of the frame, the door lock mechanism is fixedly connected to the door body, the push rod mechanism is fixedly connected to the door body, the fixing device is rotatably connected to the vertical transmission column, the horizontal transmission column, and the push rod mechanism, the vertical transmission column and the horizontal transmission column are vertically staggered and meshed, the vertical transmission column and the horizontal transmission column are threadedly connected to the connecting device, and the door lock mechanism and the push rod mechanism are each fixedly connected to a connecting device.

[0005] Furthermore, the door frame also includes a connecting seat, a door frame bearing seat, a door frame bearing, a fixed arm, and a latch box. Two connecting seats are respectively located at the upper and lower ends of one side of the door frame and are fixedly connected to the door frame. The door frame bearing seat is located on the other side of the door frame where the connecting seats are located, and the door frame bearing is located inside the door frame bearing seat. One end of the fixed arm is fixedly connected to the door body, and the other end is rotatably connected to the door frame bearing seat through the door frame bearing. Four latch boxes are respectively located at the upper and lower ends of the two inner sides of the door frame, and are respectively between the upper and lower connecting seats, and are located at the horizontal position corresponding to the locking position of the door lock mechanism.

[0006] Furthermore, the door body also includes spring damping pads, arch feet, pull plates, outer arch plates of the door leaf, inner arch plates of the door leaf, hollow inner arch columns, shock wave protection grids, vertical reinforcing grids, and horizontal reinforcing grids. The pull plates are located at the rear of the door body, with both sides of the pull plates engaging with the door frame at obtuse angles. The spring damping pads are located around the outer edges of the pull plates. The arch feet are located on the two right-angled edges of the inner side of the pull plates and are fixedly connected to them. The outer and inner arch plates of the door leaf are arched, with both ends located inside the arch feet. Hollow inner arch columns are installed inside the door body on the outside of the inner arch panel of the door leaf. The hollow inner arch columns are hollow inside, and their upper and lower ends are fixedly connected to the door body. The front end is arched and does not contact the inner arch panel of the door leaf, while the rear end is flat and does not contact the pull plate. The part of the hollow inner arch column that does not contact the door body is equipped with an anti-shock wave structure grid. The anti-shock wave structure grid is divided into vertical reinforcing grids and horizontal reinforcing grids. The vertical reinforcing grids and horizontal reinforcing grids are arranged vertically and alternately. The vertical reinforcing grids are more densely distributed closer to the vertical center line of the door body, while the horizontal reinforcing grids are evenly distributed.

[0007] Furthermore, the shock wave protection structure grid includes a shock wave inlet, a first shock wave dispersion point, a first shock wave attenuation point, a second shock wave dispersion point, a second shock wave cancellation point, a teardrop-shaped partition structure, a near-right-angled triangular partition structure, and a near-isosceles triangular partition structure. The overall shock wave protection structure grid is flat, with its hollow interior divided into attenuation structures by solid portions. The solid portions include three teardrop-shaped partition structures, near-right-angled triangular partition structures, and near-isosceles triangular partition structures. The teardrop-shaped partition structure has a semi-circular bottom and an acute angle at the top. The near-right-angled triangular partition structure has a straight side near the edge of the shock wave protection structure grid, an arc-shaped side at the top, and a straight side away from the edge of the shock wave protection structure grid. The near-isosceles triangular partition structure has an arc-shaped side at the top, and its lower two sides are symmetrically arranged along the midline of the arc-shaped side. Near-right-angled triangular partition structures are symmetrically arranged on both sides of the centerline of the shock wave protection structure grid. The three teardrop-shaped partition structures are arranged in a near-right-angled triangular partition structure. Below the triangular partition structure, a teardrop-shaped partition structure is positioned above and along the centerline of the shockwave-resistant grid. Two other teardrop-shaped partition structures are positioned below and symmetrically along the centerline of the shockwave-resistant grid. The three teardrop-shaped partition structures are arranged in a triangular pattern. Between the three teardrop-shaped partition structures, a near-isosceles triangular partition structure is positioned. The near-right-angled triangular partition structure and the uppermost teardrop-shaped partition structure isolate the shockwave inlet inside the shockwave-resistant grid. The near-right-angled triangular partition structure and the three teardrop-shaped partition structures isolate the first shockwave dispersion point inside the shockwave-resistant grid. The near-right-angled triangular partition structure and the two teardrop-shaped partition structures below it, along with the near-isosceles triangular partition structure, isolate the first shockwave attenuation point inside the shockwave-resistant grid. The near-isosceles triangular partition structure and the two teardrop-shaped partition structures below it isolate the second shockwave dispersion point inside the shockwave-resistant grid. The near-isosceles triangular partition structure and the three teardrop-shaped partition structures isolate the second shockwave cancellation point inside the shockwave-resistant grid.

[0008] Furthermore, the driving device includes an electric drive end, a manual drive wheel, and a first worm gear. The electric drive end is located inside the door body and is positioned above the vertical transmission column and the horizontal transmission column, near the connecting seat. One end of the first worm gear is located at the output end of the electric drive end, and the other end of the first worm gear is fixedly connected to the manual drive wheel.

[0009] Further, the fixing device includes a fixing pile, a bearing seat, and a bearing. The vertical transmission column includes a first worm gear, an upper threaded rod, a lower threaded rod, and a second worm. The horizontal transmission column includes a second worm gear and a left threaded rod. The bearing seat on the connecting seat is located on the outside of the connecting seat. The bearing seat on the pull plate is located at the center of the door body near the frame on all sides and is fixedly connected to it. The bearing is located inside the bearing seat and is rotatably connected to it. The fixing pile is located at both ends of the vertical and horizontal transmission columns, with one end fixedly connected to it and the other end fixedly connected to the bearing. The horizontal and vertical transmission columns are rotatably connected through the fixing pile, the bearing, and the bearing seat. The vertical transmission column is located... On the right side of the electric drive end, the transverse transmission column is located above the electric drive end. The vertical transmission column is closer to the hollow inner arch column than the transverse transmission column, and is located inside the transverse transmission column. A second worm is provided in the middle of the vertical transmission column. A first worm wheel is provided above the second worm at a slightly upper position in the middle of the vertical transmission column. The vertical transmission column is meshed with the first worm at the electric drive end through the first worm wheel. An upper threaded rod is provided at the upper end of the vertical transmission column, and a lower threaded rod is provided at the lower end. The threads of the upper threaded rod and the lower threaded rod are opposite in direction. A second worm wheel is provided at a rearward position in the upper middle of the transverse transmission column, and a left threaded rod is provided at the front end of the transverse transmission column. The second worm wheel is meshed with the second worm.

[0010] Furthermore, the connecting device includes a connector and a ball nut, wherein the ball nut is respectively disposed on the upper threaded rod, the lower threaded rod, and the left threaded rod, and is threadedly connected to them, and a connector is fixedly connected to each side of the ball nut.

[0011] Furthermore, the door lock mechanism includes a frame, a first connecting rod, a second connecting rod, a door lock limiting block, a door lock limiting groove, and a latch. The first connecting rod is located on the left side of the vertical transmission column, and the second connecting rod is located on the right side of the vertical transmission column. The length of the first connecting rod is longer than that of the second connecting rod. One end of the left frame is mounted on a connector, and the other end is rotatably connected to the first connecting rod and fixedly connected to the door lock limiting block. One end of the right frame is mounted on a connector, and the other end is rotatably connected to the second connecting rod and fixedly connected to the door lock limiting block. Four door lock limiting grooves are mounted on the pull plate and are respectively located at the same horizontal position as the four latch boxes. The door lock limiting grooves limit the movement trajectory of the door lock limiting block within the grooves. A latch is provided at the front end of the door lock limiting block.

[0012] Furthermore, the push rod mechanism includes a vertical push rod, a horizontal push rod, a push rod limiting groove, and a push rod limiting block. One end of the horizontal push rod is rotatably connected to a bearing installed in the bearing seat on the connecting seat, and the other end is fixedly connected to the push rod limiting block. One end of the vertical push rod is fixedly connected to a connector installed on the ball nut on the left threaded rod, and the other end is fixedly connected to the push rod limiting block. Two push rod limiting grooves are installed on the pull plate and are at the same horizontal position as the horizontal push rod. The push rod limiting grooves limit the movement trajectory of the push rod limiting block within the groove.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] (1) The present invention greatly improves the lightweight of the protective door while meeting the resistance requirements.

[0015] (2) The present invention can freely switch between manual drive and electric drive when opening and closing the door.

[0016] (3) The present invention can lock and unlock simultaneously when opening and closing the door manually or electrically, without having to complete the lock and unlock steps separately. Attached Figure Description

[0017] Figure 1 A top-view diagram of the opening and closing mechanism of an explosion-proof lightweight door.

[0018] Figure 2 Schematic diagram of the internal structure of the explosion-proof lightweight door.

[0019] Figure 3 A schematic diagram of the door frame and interior of the door body when the explosion-proof lightweight door is closed.

[0020] Figure 4 Internal detail diagram.

[0021] Figure 5 Schematic diagram of grid structure and lightweight structure.

[0022] in,

[0023] 1. Door frame; 1-1. Connecting seat; 1-2. Door frame bearing seat; 1-3. Door frame bearing; 1-4. Fixing arm; 1-5. Strike box.

[0024] 2. Door body; 2-1. Spring damping pad; 2-2. Arch foot; 2-3. Pull plate; 2-4. Outer arch plate of door leaf; 2-5. Inner arch plate of door leaf; 2-6. Hollow inner arch column.

[0025] 2A, Shock-resistant structural grille; 2A-1, Vertically reinforced grille; 2A-2, Horizontally reinforced grille.

[0026] 2a-1, Shock wave inlet; 2a-2, First shock wave dispersion point; 2a-3, First shock wave attenuation point; 2a-4, Second shock wave dispersion point; 2a-5, Second shock wave cancellation point.

[0027] 2b-1, teardrop-shaped dividing structure; 2b-2, near-right-angled triangular dividing structure; 2b-3, near-isosceles triangular dividing structure.

[0028] 3. Drive unit, 3-1. Electric drive end, 3-2. Manual drive wheel, 3-3. First worm gear,

[0029] 4. Fixing devices, 4-1. Fixing stakes, 4-2. Bearing housings, 4-3. Bearings,

[0030] 5. Vertical transmission column; 5-1. First worm gear; 5-2. Upper threaded rod; 5-3. Lower threaded rod; 5-4. Second worm gear.

[0031] 6. Transverse transmission column; 6-1. Second worm gear; 6-2. Left threaded rod.

[0032] 7. Connecting device, 7-1. Connector, 7-2. Ball nut,

[0033] 8. Door lock mechanism; 8-1. Frame; 8-2. First connecting rod; 8-3. Second connecting rod; 8-4. Door lock limit block; 8-5. Door lock limit groove; 8-6. Lock tongue.

[0034] 9. Push rod mechanism, 9-1. Vertical push rod, 9-2. Horizontal push rod, 9-3. Push rod limiting groove, 9-4. Push rod limiting block. Detailed Implementation

[0035] The purpose of this invention is to address the shortcomings of existing storage technology by providing a high-resistance, lightweight protective door, specifically achieved through the following technical solution:

[0036] Reference Figure 1 , Figure 2 This embodiment provides a high-resistance lightweight protective door, including a door frame 1, a door body 2, a drive device 3, a fixing device 4, a vertical transmission column 5, a horizontal transmission column 6, a connecting device 7, a door lock mechanism 8, and a push rod mechanism 9. The outward-facing side of the door body 2 has an arched structure. Compared to a planar structure, the arched structure allows the lightweight explosion-proof door to withstand greater energy damage without being destroyed. The door frame 1 and the door body 2 are rotatably connected.

[0037] Reference Figure 2A drive device 3 is located on the left side of the upper middle part of the door body 2. Several fixing devices 4 are located on the upper, lower, left, and right sides of the door body 2 near the middle of the frame. The door lock mechanism 8 is fixedly connected to the door body 2, and the push rod mechanism 9 is fixedly connected to the door body 2. The fixing devices 4 are rotatably connected to the vertical transmission column 5, the horizontal transmission column 6, and the push rod mechanism 9, so that the vertical transmission column 5 and the horizontal transmission column 6 can rotate on the door body 2, thereby driving the movement of various mechanisms. The vertical transmission column 5 and the horizontal transmission column 6 are arranged perpendicularly and interlocked, so that the vertical transmission column 5 can drive the horizontal transmission column 6 to move. The vertical transmission column 5 and the horizontal transmission column 6 are threadedly connected to the connecting device 7, so that the connecting device 7 can move on the vertical transmission column 5 and the horizontal transmission column 6 in the designed direction. The door lock mechanism 8 and the push rod mechanism 9 are fixedly connected to one of the connecting devices 7, so that the door lock mechanism 8 and the push rod mechanism 9 can be driven by the vertical transmission column 5 and the horizontal transmission column 6.

[0038] Reference Figure 1 , Figure 3 The door frame 1 also includes a connecting seat 1-1, a door frame bearing seat 1-2, a door frame bearing 1-3, a fixed arm 1-4, and a lock box 1-5. The two connecting seats 1-1 are respectively located at the upper and lower ends of one side of the door frame 1 and are fixedly connected to the door frame 1. The two connecting seats 1-1 can ensure that the door body 2 remains relatively stable when it moves.

[0039] Reference Figure 1 , Figure 3 The door frame bearing seat 1-2 is located on the other side of the door frame 1 where the connecting seat 1-1 is provided. The door frame bearing 1-3 is located inside the door frame bearing seat 1-2. One end of the fixed arm 1-4 is fixedly connected to the door body 2, and the other end is rotatably connected to the door frame bearing seat 1-2 through the door frame bearing 1-3, so that the door body 2 can perform opening or closing operations.

[0040] Reference Figure 3 Four latch boxes 1-5 are respectively set at the upper and lower ends of the two inner sides of the door frame 1 in the vertical direction, and are respectively between the upper connecting seat 1-1 and the lower connecting seat 1-1. In the horizontal position, they are located at the horizontal position corresponding to the locking position of the door lock mechanism 8, so that the door lock mechanism 8 can be locked when the door is closed.

[0041] Reference Figure 1 , Figure 5 The door body 2 also includes a spring damping pad 2-1, an arch foot 2-2, a pull plate 2-3, an outer arch plate 2-4, an inner arch plate 2-5, a hollow inner arch column 2-7, an anti-shock wave structure grille 2A, a vertical reinforcing grille 2A-1, and a horizontal reinforcing grille 2A-2. The material is a lightweight composite material, which can reduce the weight of the door body 2 to the greatest extent while ensuring strength.

[0042] Reference Figure 1Pull plate 2-3 is set behind door 2. The two side corners of pull plate 2-3 are obtuse angles, so that there will be no interference when door 2 is opened and closed.

[0043] Reference Figure 1 , Figure 5 The spring damping pad 2-1 is located on the outer edge of the four sides behind the pull plate 2-3, and plays a role in shock absorption.

[0044] Reference Figure 1 The arch foot 2-2 is located on the two right-angled edges inside the pull plate 2-3 and is fixedly connected to it, which can enhance the strength of the door body 2.

[0045] Reference Figure 1 , Figure 5 The outer arch plate 2-4 and the inner arch plate 2-5 of the door leaf are arched. The two ends of the outer arch plate 2-4 and the inner arch plate 2-5 of the door leaf are located inside the arch foot 2-2. The outer arch plate 2-4 of the door leaf is located outside the inner arch plate 2-5 of the door leaf. The double arch plate can improve the strength of the door body 2.

[0046] Reference Figure 5 Hollow inner arch column 2-7 is set inside the door body 2. The hollow inner arch column 2-7 is hollow inside. Its upper and lower ends are fixedly connected to the door body 2. The front end is arched and does not contact the inner arch plate 2-5 of the door leaf. The rear end is flat and does not contact the pull plate 2-3. It can reduce the weight of the door body 2 to the greatest extent while ensuring strength.

[0047] Reference Figure 5 The hollow inner arch column 2-7 is provided with an anti-shock wave structure grid 2A on the part that does not contact the door body 2. The anti-shock wave structure grid 2A is divided into vertical reinforcing grid 2A-1 and horizontal reinforcing grid 2A-2. The vertical reinforcing grid 2A-1 and horizontal reinforcing grid 2A-2 are arranged vertically and alternately to strengthen the strength of the door body 2.

[0048] Reference Figure 5 The vertical reinforcing grilles 2A-1 are more densely distributed closer to the vertical center line of the door body 2. The vertical center line of the arched front is subjected to the greatest force when subjected to shock wave impact. The vertical reinforcing grilles 2A-1 are more densely distributed closer to this center line. This can reduce the weight of the door body 2 to the greatest extent while ensuring the strength of the door body 2. The force on the same horizontal direction is basically the same. Therefore, the horizontal reinforcing grilles 2A-2 are evenly distributed.

[0049] Reference Figure 5The shock wave protection structure grid 2A includes a shock wave inlet 2a-1, a first shock wave dispersion point 2a-2, a first shock wave attenuation point 2a-3, a second shock wave dispersion point 2a-4, a second shock wave cancellation point 2a-5, a teardrop-shaped partition structure 2b-1, a near right-angled triangular partition structure 2b-2, and a near isosceles triangular partition structure 2b-3. The shock wave protection structure grid 2A is generally flat, and its hollow internal part is divided into a wave attenuation structure by a solid part, which can reduce the weight of the door body 2 and improve the strength of the door body 2. The vertical reinforcing grid 2A-1 and the horizontal reinforcing grid 2A-2 have the same shock wave protection structure grid 2A structure inside.

[0050] Reference Figure 5 The solid part includes three teardrop-shaped partition structures 2b-1, a near-right-angled triangular partition structure 2b-2, and a near-isosceles triangular partition structure 2b-3. The teardrop-shaped partition structure 2b-1 has a semi-circular bottom and an acute angle at the top. The near-right-angled triangular partition structure 2b-2 has a straight edge on the side closest to the edge of the shock-absorbing grid 2A, a rounded edge at the top, and a straight edge on the side furthest from the edge of the shock-absorbing grid 2A. The near-isosceles triangular partition structure 2b-3 has a rounded edge at the top, and its two lower sides are symmetrical along the midline of the rounded edge. Near-right-angled triangular partition structures 2b-2 are symmetrically arranged on both sides of the centerline of the shock-absorbing grid 2A. The three teardrop-shaped partition structures 2b-1 are located near... Below the right-angled triangular partition structure 2b-2, a teardrop-shaped partition structure 2b-1 is positioned above and along the centerline of the shock-absorbing structure grid 2A. Two more teardrop-shaped partition structures 2b-1 are positioned below and symmetrically along the centerline of the shock-absorbing structure grid 2A. Between the three teardrop-shaped partition structures 2b-1 are near-isosceles triangular partition structures 2b-3. The three teardrop-shaped partition structures 2b-1 are arranged in a triangular pattern. The two near-right-angled triangular partition structures 2b-2, the three teardrop-shaped partition structures 2b-1, and the one near-isosceles triangular partition structure 2b-3 divide the interior of the shock-absorbing structure grid 2A into a group of channels resembling Tesla valves, allowing shock waves to cancel each other out and maximizing the strength of the gate body 2. The tail end of the previous group becomes the head end of the next group, thus stacking to the required length.

[0051] Reference Figure 5 Each set of vertical reinforcing grilles 2A-1 has the same internal structure, but the length varies depending on the location. The front end is welded to the inner arch plate 2-5 of the door leaf, and the rear end is welded to the pull plate 2-3. The front end of the vertical reinforcing grille 2A-1 is the shock wave inlet 2a-1.

[0052] Reference Figure 5The internal structure of the horizontal reinforcing grille 2A-2 is the same, but the length varies depending on its location. The front end is welded to the inner arch plate 2-5 of the door leaf, and the rear end is welded to the pull plate 2-3. The left and right ends of the horizontal reinforcing grille 2A-2 in the middle part are welded to the vertical reinforcing grille 2A-1. The front end of the horizontal reinforcing grille 2A-2 is the shock wave inlet 2a-1.

[0053] Reference Figure 5 The internal structure of the horizontal reinforcing grille 2A-2 is identical to that of the vertical reinforcing grille 2A-1, but their orientations differ. Their internal structures are vertically distributed; that is, the vertical reinforcing grille 2A-1 is a shock-absorbing structure with its opening facing outwards and placed vertically, while the horizontal reinforcing grille 2A-2 is a shock-absorbing structure with its opening facing outwards and placed horizontally. Both can neutralize shock waves internally using the same structure, thereby enhancing the strength of the door body 2.

[0054] Reference Figure 5 The near-right-angled triangular partition structure 2b-2 and the uppermost teardrop-shaped partition structure 2b-1 separate the shock wave inlet 2a-1 inside the shock wave protection structure grid 2A. The shock wave inlet 2a-1 opens outward to absorb the shock waves emitted from the outside.

[0055] Reference Figure 5 The near-right-angled triangular partition structure 2b-2 and the three teardrop-shaped partition structures 2b-1 separate the interior of the shock wave protection structure grid 2A into the first shock wave dispersion point 2a-2. The shock wave is dispersed into two streams at the first shock wave dispersion point 2a-2, reducing the pressure in the unit space of the shock wave protection structure grid 2A, thereby enabling it to withstand the impact of larger shock waves without being damaged.

[0056] Reference Figure 5 The near-right-angled triangular partition structure 2b-2 and the two teardrop-shaped partition structures 2b-1 and near-isosceles triangular partition structures 2b-3 below it separate the first shock wave attenuation point 2a-3 inside the shock wave protection structure grid 2A. The two shock waves dispersed at the first shock wave dispersion point 2a-2 cancel each other out at the first shock wave attenuation point 2a-3, reducing the shock wave inside the shock wave protection structure grid 2A. Furthermore, some of the shock waves that are not canceled out enter the next set of attenuation structures and continue to be attenuated.

[0057] Reference Figure 5 The near-isosceles triangular partition structure 2b-3 and the two teardrop-shaped partition structures 2b-1 below it separate the interior of the shock wave protection structure grid 2A into a second shock wave dispersion point 2a-4. The other part of the shock wave that is not canceled continues to be dispersed into two streams here, reducing the pressure in the unit space of the shock wave protection structure grid 2A, thereby enabling it to withstand the impact of larger shock waves without being destroyed.

[0058] Reference Figure 5 The near-isosceles triangular partition structure 2b-3 and the three teardrop-shaped partition structures 2b-1 divide the interior of the shock wave shielding structure grid 2A into a second shock wave cancellation point 2a-5. At these two second shock wave cancellation points 2a-5, the shock waves that were not canceled by the first shock wave cancellation point 2a-3 will be completely canceled by the shock waves newly entering the shock wave shielding structure grid 2A.

[0059] Reference Figure 5 Shock waves that are not completely eliminated in the previous wave-absorbing structure will enter the next wave-absorbing structure. Because the previous structure will eliminate part of the shock wave, the shock wave energy borne by the next structure will definitely be less than that of the previous structure. This process continues until the last wave-absorbing structure fails to completely eliminate the shock wave energy. Finally, all the shock wave energy is transmitted to the tension plate 2-3, which then bears the remaining shock wave energy.

[0060] Reference Figure 3 , Figure 4 The drive device 3 includes an electric drive end 3-1, a manual drive wheel 3-2, and a first worm gear 3-3. The electric drive end 3-1 is located inside the door body 2 and is positioned above the vertical transmission column 5 and the horizontal transmission column 6, which are perpendicularly intersecting, near the connecting seat 1-1. One end of the first worm gear 3-3 is located at the output end of the electric drive end 3-1, and the other end of the first worm gear 3-3 is fixedly connected to the manual drive wheel 3-2. The first worm gear 3-3 can be driven by the electric drive end 3-1 or by the manual drive wheel 3-2, thus enabling free switching between manual and electric operation. The operation is simple. In extreme conditions where the electric drive cannot be used, the first worm gear 3-3 can be driven by human power alone.

[0061] Reference Figure 3 , Figure 4 The fixing device 4 includes a fixing pile 4-1, a bearing seat 4-2, and a bearing 4-3. The vertical transmission column 5 includes a first worm gear 5-1, an upper threaded rod 5-2, a lower threaded rod 5-3, and a second worm 5-4. The horizontal transmission column 6 includes a second worm gear 6-1 and a left threaded rod 6-2. The bearing seat 4-2 on the connecting seat 1-1 is located on the outside of the connecting seat 1-1, so that the push rod mechanism 9 is rotatably connected to the bearing seat 4-2, thereby enabling it to cooperate with other devices to complete the operation of opening and closing the door.

[0062] Reference Figure 3 , Figure 4The bearing seat 4-2 on the pull plate 2-3 is located in the middle of the door body 2 near the frame on all sides and is fixedly connected to it. The bearing 4-3 is located inside the bearing seat 4-2 and is rotatably connected to it. The fixing post 4-1 is located at both ends of the vertical transmission column 5 and the horizontal transmission column 6. One end of the fixing post 4-1 is fixedly connected to it, and the other end is fixedly connected to the bearing 4-3. The horizontal transmission column 6 and the vertical transmission column 5 are rotatably connected through the fixing post 4-1, the bearing 4-3 and the bearing seat 4-2. Then, the first worm gear 3-3 drives the vertical transmission column 5, and the vertical transmission column 5 drives the horizontal transmission column 6 to complete the operation of opening and closing the door and locking it.

[0063] Reference Figure 3 , Figure 4 The vertical transmission column 5 is located to the right of the electric drive end 3-1, and the horizontal transmission column 6 is located above the electric drive end 3-1. The vertical transmission column 5 is closer to the hollow inner arch column 2-7 than the horizontal transmission column 6. The vertical transmission column 5 is located inside the horizontal transmission column 6, so that the vertical transmission column 5 will not affect the operation of the horizontal transmission column 6 driving the push rod mechanism 9.

[0064] Reference Figure 3 , Figure 4 A second worm 5-4 is provided in the middle of the vertical transmission column 5. A first worm wheel 5-1 is provided above the second worm 5-4 in the upper part of the middle of the vertical transmission column 5. The vertical transmission column 5 is meshed with the first worm 3-3 provided on the electric drive end 3-1 through the first worm wheel 5-1. After the first worm 5-1 is driven by the first worm 3-3, the first worm wheel 5-1 drives the vertical transmission column 5 to rotate.

[0065] Reference Figure 3 , Figure 4 The upper end of the vertical transmission column 5 is provided with an upper threaded rod 5-2, and the lower end is provided with a lower threaded rod 5-3. The threads of the upper threaded rod 5-2 and the lower threaded rod 5-3 are opposite in direction, so that when the vertical transmission column 5 moves in one direction, the connecting device 7 on the upper threaded rod 5-2 and the connecting device 7 on the lower threaded rod 5-3 can move in opposite directions, thereby enabling the door lock to be opened and closed simultaneously, preventing the situation where one end is unlocked and the other end is locked.

[0066] Reference Figure 3 , Figure 4 A second worm gear 6-1 is provided at the rear of the upper middle part of the transverse transmission column 6, and a left threaded rod 6-2 is provided at the front end of the transverse transmission column 6. The second worm gear 6-1 is meshed with the second worm 5-4, so that the second worm 5-4 can drive the second worm gear 6-1 to move, and thus the vertical transmission column 5 can drive the transverse transmission column 6 to move.

[0067] Reference Figure 2The connecting device 7 can move left and right on the left threaded rod 6-2. Thus, when the transverse transmission column 6 rotates, the connecting device 7 on the left threaded rod 6-2 can move left or right according to the rotation direction of the transverse transmission column 6.

[0068] Reference Figure 2 When the door is closed, the connecting device 7 on the upper threaded rod 5-2 is located at the uppermost end of the upper threaded rod 5-2, the connecting device 7 on the lower threaded rod 5-3 is located at the lowermost end of the lower threaded rod 5-3, and the connecting device 7 on the left threaded rod 6-2 is located at the rightmost end of the left threaded rod 6-2.

[0069] Reference Figure 2 With the door fully open, the connecting device 7 on the upper threaded rod 5-2 is located at the lower end of the upper threaded rod 5-2, the connecting device 7 on the lower threaded rod 5-3 is located at the upper end of the lower threaded rod 5-3, and the connecting device 7 on the left threaded rod 6-2 is located at the leftmost end of the left threaded rod 6-2.

[0070] Reference Figure 2 The thread direction on each threaded rod causes the connecting device 7 on the upper threaded rod 5-2 to move downward, while the connecting device 7 on the lower threaded rod 5-3 is driven upward, and the connecting device 7 on the left threaded rod 6-2 is driven to move to the left.

[0071] Reference Figure 2 The thread direction on each threaded rod causes the connecting device 7 on the upper threaded rod 5-2 to move upward, while the connecting device 7 on the lower threaded rod 5-3 is driven downward, and the connecting device 7 on the left threaded rod 6-2 is driven to move to the right.

[0072] Reference Figure 3 , Figure 4 The connecting device 7 includes a connector 7-1 and a ball nut 7-2. The ball nut 7-2 is respectively disposed on the upper threaded rod 5-2, the lower threaded rod 5-3, and the left threaded rod 6-2, and is threadedly connected to them. A connector 7-1 is also fixedly connected to each side of the ball nut 7-2. The connecting device 7 disposed on the upper threaded rod 5-2, the lower threaded rod 5-3, and the left threaded rod 6-2 moves on the threaded rod through the ball nut 7-2. When the vertical transmission column 5 and the horizontal transmission column 6 move, they drive the threaded rod to rotate, thereby driving the ball nut 7-2 on the threaded rod to move in the desired direction.

[0073] Reference Figure 3 , Figure 4The door lock mechanism 8 includes a frame 8-1, a first connecting rod 8-2, a second connecting rod 8-3, a door lock limiting block 8-4, a door lock limiting groove 8-5, and a latch 8-6. The first connecting rod 8-2 is located on the left side of the vertical transmission column 5, and the second connecting rod 8-3 is located on the right side of the vertical transmission column 5. The length of the first connecting rod 8-2 is longer than that of the second connecting rod 8-3. The vertical transmission column 5 is not located on the center line of the door body 2. Therefore, the latches 8-6 at the left and right ends are at different distances from the vertical transmission column 5, with the left end being farther away and the right end being closer. Thus, the first connecting rod 8-2 is longer and the second connecting rod 8-3 is shorter, so as to achieve simultaneous locking or unlocking.

[0074] Reference Figure 3 , Figure 4 One end of the left frame 8-1 is mounted on the connector 7-1, and the other end is rotatably connected to the first connecting rod 8-2. The other end is fixedly connected to the door lock limiting block 8-4. One end of the right frame 8-1 is mounted on the connector 7-1, and the other end is rotatably connected to the second connecting rod 8-3. The other end is fixedly connected to the door lock limiting block 8-4, so that one end of the first connecting rod 8-2 and the second connecting rod 8-3 can be driven by the connector 7-1 to move, and then move along the direction of movement of the ball nut 7-2 connected to each other on the threaded rod.

[0075] Reference Figure 3 , Figure 4 Four door lock limiting grooves 8-5 are set on the pull plate 2-3 and are respectively at the same horizontal position as the four strike boxes 1-5, so that each lock tongue (8-6) can be inserted into the corresponding strike box 1-5 when the door is closed.

[0076] Reference Figure 4 The door lock limiting groove 8-5 restricts the movement trajectory of the door lock limiting block 8-4 within the groove, so that when the first link 8-2 and the second link 8-3 drive the door lock limiting block 8-4 to move, the door lock limiting block 8-4 can only move within the door lock limiting groove 8-5, controlling its movement trajectory and ensuring the normal operation of the door lock mechanism 8.

[0077] Reference Figure 4 The door lock limit block 8-4 has a latch 8-6 at its front end, which enables the door lock mechanism 8 to complete the locking and unlocking operations.

[0078] Reference Figure 2 , Figure 3 , Figure 4When the connecting device 7 on the upper threaded rod 5-2 is driven downward from the uppermost end of the upper threaded rod 5-2, and the connecting device 7 on the lower threaded rod 5-3 is driven upward from the lowermost end of the lower threaded rod 5-3, the first connecting rod 8-2 drives the door lock limiting block 8-4 connected to it to move from the leftmost end to the rightmost end within the door lock limiting groove 8-5, and the second connecting rod 8-3 drives the door lock limiting block 8-4 connected to it to move from the rightmost end to the leftmost end within the door lock limiting groove 8-5, thereby completing the unlocking operation.

[0079] Reference Figure 2 , Figure 3 , Figure 4 When the connecting device 7 on the upper threaded rod 5-2 is driven upward from the bottom of the upper threaded rod 5-2, and the connecting device 7 on the lower threaded rod 5-3 is driven downward from the top of the lower threaded rod 5-3, the first connecting rod 8-2 drives the door lock limiting block 8-4 connected to it to move from the rightmost end to the leftmost end within the door lock limiting groove 8-5, and the second connecting rod 8-3 drives the door lock limiting block 8-4 connected to it to move from the leftmost end to the rightmost end within the door lock limiting groove 8-5, thereby completing the locking operation.

[0080] Reference Figure 3 , Figure 4 The push rod mechanism 9 includes a vertical push rod 9-1, a horizontal push rod 9-2, a push rod limiting groove 9-3, and a push rod limiting block 9-4. One end of the horizontal push rod 9-2 is rotatably connected to the bearing 4-3 installed in the bearing seat 4-2 on the connecting seat 1-1, and the other end is fixedly connected to the push rod limiting block 9-4, so that the horizontal push rod 9-2 can rotate relative to the bearing seat 4-2 on the connecting seat 1-1 under the action of the push rod limiting block 9-4.

[0081] Reference Figure 3 , Figure 4 One end of the vertical push rod 9-1 is fixedly connected to the connector 7-1 on the ball nut 7-2 on the left threaded rod 6-2, and the other end is fixedly connected to the push rod limiting block 9-4, so that the ball nut 7-2 on the left threaded rod 6-2 can drive the vertical push rod 9-1 to move, and the vertical push rod 9-1 moves while driving the push rod limiting block 9-4 to move.

[0082] Reference Figure 3 , Figure 4 Two push rod limiting grooves 9-3 are set on the pull plate 2-3 and are at the same horizontal position as the horizontal push rod 9-2. The push rod limiting grooves 9-3 limit the movement trajectory of the push rod limiting block 9-4 within the groove, so that the push rod limiting block 9-4 moves relative to the push rod limiting groove 9-3 under the drive of the vertical push rod 9-1. At the same time, the push rod limiting block 9-4 drives the horizontal push rod 9-2 to move relative to each other, thus completing the door opening and closing operation.

[0083] Reference Figure 1 , Figure 2 When the connecting device 7 on the left threaded rod 6-2 is driven to move to the left from the rightmost end of the left threaded rod 6-2, the vertical push rod 9-1 is driven to move to the left by the connecting device 7. Then, the vertical push rod 9-1 drives the push rod limiting block 9-4 to move to the left within the push rod limiting groove 9-3. The push rod limiting groove 9-3 drives the horizontal push rod 9-2 to rotate relative to the bearing seat 4-2 on the connecting seat 1-1, thereby completing the door opening operation.

[0084] Reference Figure 1 , Figure 2 When the connecting device 7 on the left threaded rod 6-2 is driven to move to the right from the leftmost end of the left threaded rod 6-2, the vertical push rod 9-1 is driven to move to the right by the connecting device 7. Then, the vertical push rod 9-1 drives the push rod limiting block 9-4 to move to the right within the push rod limiting groove 9-3. The push rod limiting groove 9-3 drives the horizontal push rod 9-2 to rotate relative to the bearing seat 4-2 on the connecting seat 1-1, thereby completing the door closing operation.

Claims

1. A high-resistance lightweight protective door, characterized in that, It includes a door frame (1), a door body (2), a drive unit (3), a fixing device (4), a vertical transmission column (5), a horizontal transmission column (6), a connecting device (7), a door lock mechanism (8), and a push rod mechanism (9), among which The outer side of the door (2) has an arched structure. The door frame (1) and the door body (2) are rotatably connected. A drive device (3) is provided on the upper left side of the middle part of the door (2). Several fixing devices (4) are respectively installed on the middle of the door body (2) near the top, bottom, left and right sides of the frame. The door lock mechanism (8) is fixedly connected to the door body (2). The push rod mechanism (9) is fixedly connected to the door body (2). The fixing device (4) is rotatably connected to the vertical transmission column (5), the horizontal transmission column (6), and the push rod mechanism (9). The vertical transmission column (5) and the horizontal transmission column (6) are arranged perpendicularly and staggered, and are meshed together. The vertical transmission column (5), the horizontal transmission column (6), and the connecting device (7) are threaded together. The door lock mechanism (8) and the push rod mechanism (9) are respectively fixedly connected to a connecting device (7). The door frame (1) also includes a connecting seat (1-1), a door frame bearing seat (1-2), a door frame bearing (1-3), a fixing arm (1-4), and a lock box (1-5), wherein Two connecting seats (1-1) are respectively set at the upper and lower ends of one side of the door frame (1) and are fixedly connected to the door frame (1). The door frame bearing seat (1-2) is located on the other side of the door frame (1) where the connecting seat (1-1) is located. The door frame bearing (1-3) is located inside the door frame bearing housing (1-2). One end of the fixed arm (1-4) is fixedly connected to the door body (2), and the other end is rotatably connected to the door frame bearing seat (1-2) through the door frame bearing (1-3). Four latch boxes (1-5) are respectively installed at the upper and lower ends of the two inner sides of the door frame (1) in the vertical direction, and are located between the upper connecting seat (1-1) and the lower connecting seat (1-1), respectively, at the horizontal position corresponding to the locking position of the door lock mechanism (8). The drive device (3) includes an electric drive end (3-1), a manual drive wheel (3-2), and a first worm gear (3-3), wherein The electric drive end (3-1) is located inside the door body (2) and is positioned above the vertical drive column (5) and the horizontal drive column (6) which are perpendicularly intersecting, near the connecting seat (1-1). One end of the first worm gear (3-3) is located at the output end of the electric drive end (3-1). The other end of the first worm gear (3-3) is fixedly connected to the manual drive wheel (3-2). The fixing device (4) includes a fixing pile (4-1), a bearing seat (4-2), and a bearing (4-3). The vertical transmission column (5) includes a first worm gear (5-1), an upper threaded rod (5-2), a lower threaded rod (5-3), and a second worm gear (5-4). The transverse transmission column (6) includes a second worm gear (6-1) and a left threaded rod (6-2), wherein, The bearing seat (4-2) on the connecting seat (1-1) is located on the outside of the connecting seat (1-1). The bearing seat (4-2) on the pull plate (2-3) is located at the center of the door body (2) near the frame on all sides, and is fixedly connected to it. The bearing (4-3) is located inside the bearing housing (4-2) and is rotatably connected to it. Fixed piles (4-1) are installed at both ends of the vertical transmission column (5) and the horizontal transmission column (6). One end of the fixed pile (4-1) is fixedly connected to the vertical transmission column (5), and the other end is fixedly connected to the bearing (4-3). The horizontal transmission column (6) and the vertical transmission column (5) are rotatably connected to the bearing seat (4-2) via the fixed pile (4-1) and the bearing (4-3), respectively. The vertical transmission column (5) is located to the right of the electric drive end (3-1), and the horizontal transmission column (6) is located above the electric drive end (3-1). The vertical transmission column (5) is closer to the hollow inner arch column (2-7) than the horizontal transmission column (6), and the vertical transmission column (5) is located inside the horizontal transmission column (6). A second worm gear (5-4) is provided in the middle of the vertical transmission column (5). The first worm wheel (5-1) is located slightly above the middle of the vertical transmission column (5), above the second worm (5-4). The vertical transmission column (5) is connected to the first worm (3-3) on the electric drive end (3-1) via the first worm wheel (5-1). The upper end of the vertical transmission column (5) is provided with an upper threaded rod (5-2), and the lower end is provided with a lower threaded rod (5-3). The threads of the upper threaded rod (5-2) and the lower threaded rod (5-3) are opposite in direction. A second worm gear (6-1) is provided at the rear of the middle part of the transverse transmission column (6). A left threaded rod (6-2) is provided at the front end of the transverse transmission column (6). The second worm gear (6-1) is meshed with the second worm (5-4). The connecting device (7) includes a connector (7-1) and a ball nut (7-2), wherein Ball nuts (7-2) are respectively installed on the upper threaded rod (5-2), the lower threaded rod (5-3), and the left threaded rod (6-2), and are threadedly connected to them. A connector (7-1) is fixedly connected to each side of the ball nut (7-2). The door lock mechanism (8) includes a frame (8-1), a first connecting rod (8-2), a second connecting rod (8-3), a door lock limiting block (8-4), a door lock limiting groove (8-5), and a lock tongue (8-6), wherein, The first link (8-2) is located to the left of the vertical transmission column (5). The second link (8-3) is located to the right of the vertical transmission column (5). The first link (8-2) is longer than the second link (8-3). One end of the frame (8-1) on the left is mounted on the connector (7-1), and the other end is rotatably connected to the first connecting rod (8-2). The other end of the first connecting rod (8-2) is fixedly connected to the door lock limit block (8-4). One end of the frame (8-1) on the right side is mounted on the connector (7-1), and the other end is rotatably connected to the second connecting rod (8-3). The other end of the second connecting rod (8-3) is fixedly connected to the door lock limit block (8-4). Four door lock limiting slots (8-5) are set on the pull plate (2-3), and are respectively at the same horizontal position as the four strike boxes (1-5). The door lock limiting groove (8-5) confines the movement trajectory of the door lock limiting block (8-4) within the groove. The door lock limit block (8-4) has a latch (8-6) at its front end. The push rod mechanism (9) includes a vertical push rod (9-1), a horizontal push rod (9-2), a push rod limiting groove (9-3), and a push rod limiting block (9-4), wherein... One end of the transverse push rod (9-2) is rotatably connected to the bearing (4-3) installed in the bearing seat (4-2) on the connecting seat (1-1), and the other end is fixedly connected to the push rod limiting block (9-4). One end of the vertical push rod (9-1) is fixedly connected to the connector (7-1) on the ball nut (7-2) of the left threaded rod (6-2), and the other end is fixedly connected to the push rod limiting block (9-4). Two push rod limiting grooves (9-3) are set on the pull plate (2-3) and are at the same horizontal position as the transverse push rod (9-2). The push rod limiting groove (9-3) limits the movement trajectory of the push rod limiting block (9-4) within the groove.

2. The high-resistance lightweight protective door according to claim 1, characterized in that, The door body (2) also includes a spring damping pad (2-1), an arch foot (2-2), a pull plate (2-3), an outer arch plate of the door leaf (2-4), an inner arch plate of the door leaf (2-5), a hollow inner arch column (2-7), an anti-shock wave structure grid (2A), a vertical reinforcing grid (2A-1), and a horizontal reinforcing grid (2A-2), wherein Pull-out plate (2-3) is located behind the door body (2). The two side angles of the pull-out plate (2-3) and the door frame (1) are both obtuse angles. The spring damping pad (2-1) is located around the outer edge of the pull plate (2-3). The arch foot (2-2) is located on the two right-angled edges inside the tie plate (2-3) and is fixedly connected to it. The outer arch panel (2-4) and the inner arch panel (2-5) of the door leaf are arched. The outer arch panel (2-4) and the inner arch panel (2-5) of the door leaf are located inside the arch foot (2-2) at both ends. The outer arch panel (2-4) of the door leaf is located outside the inner arch panel (2-5) of the door leaf. Hollow inner arch column (2-7) is set inside the door body (2). The hollow inner arch column (2-7) is hollow inside. Its upper and lower ends are fixedly connected to the door body (2). Its front end is arched and does not contact the inner arch plate (2-5) of the door leaf. Its rear end is flat and does not contact the pull plate (2-3). The part of the hollow inner arch column (2-7) that does not contact the door body (2) is provided with an anti-shock wave structure grid (2A). The shock wave protection structure grid (2A) is divided into vertical reinforcing grid (2A-1) and horizontal reinforcing grid (2A-2). The vertical reinforcing grid (2A-1) and horizontal reinforcing grid (2A-2) are arranged vertically and alternately. The vertical reinforcing grid (2A-1) is more densely distributed closer to the vertical center line of the door body (2), while the horizontal reinforcing grid (2A-2) is evenly distributed.

3. The high-resistance lightweight protective door according to claim 1, characterized in that, The shock wave protection structure grid (2A) includes a shock wave inlet (2a-1), a first shock wave dispersion point (2a-2), a first shock wave attenuation point (2a-3), a second shock wave dispersion point (2a-4), a second shock wave cancellation point (2a-5), a teardrop-shaped partition structure (2b-1), a near-right-angled triangular partition structure (2b-2), and a near-isosceles triangular partition structure (2b-3), wherein... The shock-absorbing structural grid (2A) is generally flat, with its hollow interior divided into wave-damping structures by solid sections. The solid part includes three teardrop-shaped dividing structures (2b-1), a near-right-angled triangular dividing structure (2b-2), and a near-isosceles triangular dividing structure (2b-3), among which, The teardrop-shaped partition structure (2b-1) has a semi-circular bottom and an acute angle at the top. The near-right-angled triangular partition structure (2b-2) has a straight edge on the side closest to the edge of the shock-absorbing structure grid (2A), and a rounded edge at the top. The side furthest from the edge of the shock-absorbing structure grid (2A) also has a straight edge. The near-isosceles triangular dividing structure (2b-3) has a rounded edge at the top, and the two lower sides are symmetrical along the midline of the rounded edge. Along the centerline of the shock wave protection grid (2A), near right-angled triangular partition structures (2b-2) are symmetrically arranged on both sides. Three teardrop-shaped partition structures (2b-1) are positioned below the near-right-angled triangular partition structure (2b-2). One teardrop-shaped partition structure (2b-1) is positioned above and along the centerline of the shock-absorbing grid (2A), while the other two teardrop-shaped partition structures (2b-1) are positioned below and symmetrically arranged along the centerline of the shock-absorbing grid (2A). The three teardrop-shaped partition structures (2b-1) are distributed in a triangular pattern. A near-isosceles triangular partition structure (2b-3) is provided between the three teardrop-shaped partition structures (2b-1). The near right-angled triangular partition structure (2b-2) and the uppermost teardrop-shaped partition structure (2b-1) separate the shock wave inlet (2a-1) inside the shock wave protection structure grid (2A). The near right-angled triangular partition structure (2b-2) and three teardrop-shaped partition structures (2b-1) separate the first shock wave dispersion point (2a-2) inside the shock wave protection structure grid (2A). The near right-angled triangular partition structure (2b-2) and the two teardrop-shaped partition structures (2b-1) and the near isosceles triangular partition structure (2b-3) below it separate the first shock wave damping point (2a-3) inside the shock wave protection structure grid (2A). The near-isosceles triangular partition structure (2b-3) and the two teardrop-shaped partition structures below (2b-1) separate the second shock wave dispersion area (2a-4) inside the shock wave protection structure grid (2A). The near-isosceles triangular partition structure (2b-3) and three teardrop-shaped partition structures (2b-1) separate the second shock wave cancellation point (2a-5) inside the shock wave protection structure grid (2A).

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