Fireproof and radiation-proof split door with double lead layers

Abstract

The invention relates to a double-lead-layer fireproof radiation-proof split door which comprises a first door plate body, a second door plate body and a third door plate body, the first door plate body and the third door plate body are each composed of two steel plates, two lead plates, frame keels and fireproof filling materials, and duckbilled folded edges are arranged at the ends of the steel plates. During installation, the protruding blocks at the two ends of the second door plate body enter the grooves of the first door plate body and the second door plate body, after splicing is completed, limiting is conducted through the fixing pulling rivets on the two sides, and independent connecting pieces do not need to be additionally arranged through concave-convex matched plug-in connection. According to the double-lead-layer fireproof radiation-proof split door, the integrity of the door is enhanced, and the fireproof radiation-proof effect is improved.

Description

Technical Field

[0001] The present invention relates to a door panel for fire and radiation prevention, especially to the field of door panels for automatic doors for fire and radiation prevention. Background Art

[0002] The most common existing automatic doors for fire and radiation prevention are formed by a whole plate provided with a single lead plate. Since the whole plate has no lap joints, its fire and radiation prevention performance is better, but it is not convenient to carry and install. There is also a split-type protective door. However, due to the gaps existing at the joints of the door body of the split-type protective door, rays will leak from the gaps, resulting in a decline in the fire and radiation prevention performance. Moreover, the split-type protective door generally can only be provided with a single-layer lead plate, and the single-layer lead plate will cause the door body to sag easily during use due to unbalanced stress, thus making the door opening and closing inflexible. In addition, the thresholds of the existing split-type fire and radiation prevention doors are generally fixed, which easily form linear gaps at the bottom, resulting in a decline in the fire and radiation prevention function.

[0003] The invention patent with the application number CN202311595935 proposes a fire and radiation prevention lead door, which relates to the technical field of radiation prevention doors. The radiation prevention sliding door 2 includes an expanded perlite interlayer 21. A first lead plate 22 is fixedly connected to the front side of the expanded perlite interlayer 21. A first aluminum alloy clamping plate 23 is fixedly connected to the front side of the first lead plate 22. A first nano-aluminum oxide coating 24 is arranged on the front side of the first aluminum alloy clamping plate 23. A second lead plate 25 is fixedly connected to the rear side of the expanded perlite interlayer 21. A second aluminum alloy clamping plate 26 is fixedly connected to the rear side of the first lead plate 22. A second nano-aluminum oxide coating 27 is arranged on the rear side of the second aluminum alloy clamping plate 26. Although the existing technology is provided with a double-layer lead plate, based on the implementation process, it can only be set as a whole plate, but the height dimension of the door panel is relatively large, and its handling and installation are both inconvenient.

[0004] The utility model patent with the application number CN202222986369 proposes a medical split-type protective door. Both ends of the first mounting plate are detachably connected to the second mounting plate through a connecting structure. A third lead plate is installed on the first mounting plate, and a second lead plate is installed on the second mounting plate, so as to be detachably connected through the connecting structure between the two second mounting plates and the first mounting plate. Although this structure realizes the split-type connection, the plate body itself is a single-layer lead plate, and a complex connecting structure is provided, forming a lap protrusion on the surface of the plate body. Bolts are used to connect the mounting plate and the connecting structure, damaging the surface of the lead plate and easily causing the leakage of rays. Summary of the Invention

[0005] A double-lead-layer fire and radiation prevention split door can overcome the defects in the above background art, and has the advantages of good fire and radiation prevention effect, simple structure, convenient transportation and installation, and good integrity.

[0006] A double-lead-layer fireproof and radiation-proof split door, comprising a first door panel body, a second door panel body and a third door panel body. Both the first door panel body and the third door body are composed of two steel plates, two lead plates, frame keels and fireproof filling materials. A duckbill-shaped hem is provided at the end of the steel plate, and both ends of the lead plate are embedded in the duckbill-shaped hem of the steel plate. The frame keel is sandwiched between the combined plate bodies formed by the steel plate and the lead plate, and the gap between the frame keel and the combined plate body is filled with fireproof filling materials. Grooves are provided at both ends of the first main board body and the third door panel body, and bumps are formed at both ends of the second door panel body. In the first door panel body and the third door panel body, the lead plate extends to the groove position, and in the second door panel body, the lead plate extends to the bump position, and the lead plates overlap at the groove and bump positions. During installation, the bumps at both ends of the second door panel body enter the grooves of the first door panel body and the second door panel body. After assembly, limit is carried out through the fixed rivets on both sides; Sealing edge steel plates are arranged around the door body plate and fixed by screws. Through the plug-in connection with concave-convex cooperation, no separate connecting parts need to be added, and lead plate lapping is formed at the connection position, and an L-shaped lapping seam is formed at the splicing surface, ensuring the radiation-proof effect at the connection position. After the overall assembly is completed, sealing edge steel plates are arranged around the door panel to enhance the integrity of the door and ensure the sealing performance around the door, improving its fireproof and radiation-proof effects.

[0007] In order to further improve the integrity of the door body after assembly, elastic pressing and locking mechanisms are provided on the grooves and bumps.

[0008] Specifically, the elastic pressing and locking mechanism includes a pressing head arranged at the rear end of the groove and a fixing hole arranged at the rear end of the bump. The pressing head is arranged on the side wall of the groove and is connected to the side wall of the groove through a spring. This connection method is suitable for the assembly method in which the bump slides in the groove. When the bump is just inserted into the groove, the spring is compressed under the extrusion of the bump. As the bump moves to the position corresponding to the fixing hole and the pressing head, with the release of the spring elastic force, the pressing head is inserted into the fixing hole to achieve locking.

[0009] Specifically, the elastic pressing and locking mechanism includes an elastic telescopic structure arranged on the bump and a plug-in groove arranged on the side wall of the groove. The elastic telescopic structure includes a fixing plate, springs connected to both sides of the fixing plate, and a tongue connected to the springs. When the first door panel body and the second door panel body are aligned, force is applied vertically to squeeze, so that the tongue enters the plug-in groove for locking. This connection method is suitable for the docking and splicing method of the upper and lower two door panel bodies.

[0010] Specifically, the elastic pressing and locking mechanism can also be provided with an extended fixing structure. The extended fixing structure includes a pressing elastic sheet arranged in the groove, the end of which is connected to a spring, and the end of the spring is connected to a hook. A clamping member is arranged at the lower part of the first door body plate and the upper part of the second body plate. When the bump slides in the groove, the pressing elastic sheet is squeezed, the spring is compressed, and the hook extends out of the plate body to be clamped with the clamping member.

[0011] Specifically, to enhance the connection, the sides of the groove and the protrusion are provided with serrations that fit into each other.

[0012] Specifically, to enhance the limit, flanges are provided on both sides of the groove, and bent hooks are provided on the protrusion. When the protrusion is inserted into the groove, the hooks cooperate with the flanges.

[0013] To avoid damage to the surface of the door panel body, resulting in a weakening of the fire and radiation protection performance, the two ends of the steel plate with a duckbill-shaped flange are bent downward and fixed to the frame keel.

[0014] To improve the sealing performance at the joint, a heat-expandable sealing strip is provided at the joint position between the groove of the first door body and the second door body.

[0015] To enhance the fire and radiation protection performance at the bottom of the door panel body, a floating threshold is provided at the bottom of the third door body. When the door is closed, the threshold rises and fits into the groove at the bottom of the door body. When the door is opened, the threshold drops to be flush with the ground.

[0016] The present invention has the following advantages and beneficial effects compared with the prior art:

[0017] 1. Through the plug-in connection with concave-convex fit, there is no need to add separate connecting parts, and a lead plate lap joint and an L-shaped lap joint seam are formed at the connection position, ensuring the radiation protection effect at the connection position. After the overall assembly is completed, edge-sealing steel plates are provided around the door panel to enhance the integrity of the door and ensure the sealing performance around the door, improving its fire and radiation protection effect. By setting a spring-loaded locking mechanism to form a lock during the assembly process, the integrity between the three plate bodies is improved.

[0018] 2. The upper and lower extrusion installation is realized by the elastic telescopic structure provided on the protrusion, simplifying the installation method. Locking is carried out while the upper and lower plates are buckled. Compared with the sliding assembly, the extrusion type can also play a positioning role at the same time.

[0019] 3. Locking is triggered through the sliding process. Through the hook-type locking and the outstretched locking, in addition to locking, it is equivalent to adding enhanced keels outside the door body, improving the overall stiffness and strength of the door panel.

[0020] 4. Through the serrations with concave-convex fit, the process is simple, the cost is low, and at the same time, the reliability of the connection is improved.

[0021] 5. The cooperation between the hook and the flange is simple in process, low in cost, and at the same time, the reliability of the connection is improved.

[0022] 6. The two ends of the steel plate with a duckbill-shaped flange are bent downward and fixed to the frame keel, which can achieve no threaded holes or other connection-damaging structures on the surface of the panel, improving the radiation and fire protection performance of the panel surface.

[0023] 7. By providing a heat-expandable sealing strip at the contact part, the sealing and fireproof performance of the joint is improved.

[0024] 8. The keel, fireproof protection material and steel plate are bonded together at the panel position with a flat surface and no defects, forming a non-destructive connection, which improves the fireproof and radiation-proof effects of the door.

[0025] 9. By providing a floating threshold, the sealing performance at the bottom of the door is improved. When the door is closed, the threshold rises to effectively overlap with the door body. When the door is opened, the threshold drops to be flush with the ground, meeting the requirements of the barrier-free passage in the hospital.

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings. Brief Description of the Drawings

[0027] Figure 1 : Front assembled view of the present invention;

[0028] Figure 2 : Figure 1 A-A cross-sectional view of

[0029] Figure 3 : Figure 1 B-B cross-sectional view of

[0030] Figure 4 : A specific elastic pressing locking mechanism;

[0031] Figure 5 : Another specific elastic pressing locking mechanism;

[0032] Figure 6 : Schematic diagram of the external extension and fixing structure of the present invention. Detailed Embodiments

[0033] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention.

[0034] See attachedFigures 1 - 3 , a double-lead-layer fireproof and radiation-proof split door, comprising a first door panel body 1, a second door panel body 2 and a third door panel body 3. The first door panel body and the third door body are both composed of two steel plates, two lead plates, frame keels and fireproof filling materials. The end of the steel plate is provided with a duckbill-shaped hem, and both ends of the lead plate are embedded in the duckbill-shaped hem of the steel plate. The frame keel is clamped between the combined plate bodies formed by the steel plate and the lead plate, and the gap between the frame keel and the combined plate body is filled with fireproof filling materials; grooves 4 are provided at both ends of the first door panel body and the third door panel body, and bumps 5 are formed at both ends of the second door panel body. In the first door panel body and the third door panel body, the lead plate extends to the groove position, and in the second door panel body, the lead plate extends to the bump position, and the lead plates overlap at the groove and bump positions. During installation, the bumps at both ends of the second door panel body enter the grooves of the first door panel body and the second door panel body. After assembly, the two sides are limited by fixed rivets 6; the periphery of the door panel is provided with a sealing edge steel plate and fixed by screws 8. Through the plug-in connection with concave-convex cooperation, there is no need to add separate connecting parts, and a lead plate lap joint is formed at the connection position, and an L-shaped lap joint is formed at the splicing surface, ensuring the radiation-proof effect at the connection position. After the overall assembly is completed, a sealing edge steel plate is provided around the door panel to enhance the integrity of the door and ensure the sealing performance around the door, improving its fireproof and radiation-proof effects.

[0035] In order to further improve the integrity of the door body after assembly, a spring-loaded locking mechanism that cooperates with each other is provided on the grooves and bumps. See the appendix Figure 4 , a specific spring-loaded locking mechanism includes a pressing head 13 provided at the rear end of the groove and a fixing hole provided at the rear end of the bump. The pressing head is provided on the side wall of the groove 4 and is connected to the side wall of the groove by a spring 12. This connection method is suitable for the way of assembling by sliding the bump in the groove. When the bump is just inserted into the groove, the spring is compressed under the extrusion of the bump. As the bump moves to the position where the fixing hole corresponds to the pressing head, with the release of the spring force, the pressing head is inserted into the fixing hole to achieve locking.

[0036] For the connection of the upper and lower splicing, another spring-loaded locking mechanism is provided. See the appendix Figure 5 , the spring-loaded locking mechanism includes an elastic telescopic structure provided on the bump 5 and a plug-in groove 9 provided on the side wall of the groove 4. The elastic telescopic structure includes a fixing plate and springs 11 connected to both sides of the fixing plate, and a tenon tongue 10 connected to the spring. When the first door panel body and the second door panel body are aligned, force is applied vertically to make the tenon tongue enter the plug-in groove for locking. This connection method is suitable for the way of docking and splicing of the upper and lower two door panel bodies.

[0037] In order to lock the upper and lower door panel bodies and at the same time enhance the strength of the door panel body, another spring-loaded locking mechanism is provided. See the appendix Figure 6, the elastic locking mechanism is provided with an externally extending fixing structure. The externally extending fixing structure includes a pressing elastic piece 14 arranged in the groove, the end of which is connected to a spring, and the end of the spring is connected to a hook. A clamping member 15 is arranged at the lower part of the first door body plate and the upper part of the second body plate. When the convex block slides in the groove, it squeezes the pressing elastic piece, the spring is compressed, and the hook extends out of the plate body to be clamped with the clamping member.

[0038] In specific implementation, to enhance the connection, the sides of the groove and the convex block are provided with serrations that are in concave-convex fit. To enhance the limit, the two sides of the groove are provided with flanges, and the convex block is provided with a bent hook. When the convex block is inserted into the groove, the hook cooperates with the flange. In order to avoid damage to the surface of the door panel body, resulting in a weakening of the fire and radiation protection performance, the two ends of the steel plate with a duckbill-shaped flange are bent downward to be fixed to the frame keel.

[0039] To improve the sealing performance at the joint, a heat-expandable sealing strip is arranged at the joint position between the groove of the first door body and the second door body.

[0040] To enhance the fire and radiation protection performance at the bottom of the door panel body, a floating threshold is arranged at the bottom of the third door body. When the door is closed, the threshold rises and is inserted into the groove at the bottom of the door body. When the door is opened, the threshold descends to be flush with the ground.

[0041] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A double-lead fireproof and radiation-proof split door, characterized in that: The invention comprises a first door panel body, a second door panel body and a third door panel body, wherein the first door panel body and the third door panel body are both composed of two steel plates, two lead plates, a frame keel and a fireproof filling material, the ends of the steel plates are provided with duckbill-shaped folded edges, the two ends of the lead plates are embedded in the duckbill-shaped folded edges of the steel plates, the frame keel is sandwiched between the combined panels formed by the steel plates and the lead plates, and the gap between the frame keel and the combined panels is filled with a fireproof filling material; grooves are provided at both ends of the first panel body and the third door panel body, and protrusions are formed at both ends of the second door panel body, in the first door panel body and the third door panel body, the lead plates extend to the groove positions, and in the second door panel body, the lead plates extend to the protrusion positions, and the lead plates overlap at the groove and protrusion positions, and during installation, the protrusions at both ends of the second door panel body enter into the grooves of the first door panel body and the second door panel body, and after the assembly is completed, they are limited by the fixed rivets on both sides; the door panels are provided with encapsulation edge steel plates around them and fixed by screws.

2. A double-lead fireproof and radiation-proof split door according to claim 1, characterized in that: The groove and the convex block are provided with mutually cooperating spring-pressing locking mechanisms.

3. The double-lead fireproof and radiation-proof split door according to claim 2, characterized in that: The spring-loaded locking mechanism comprises a pressing head arranged at the rear end of the groove and a fixing hole arranged at the rear end of the protrusion. The pressing head is arranged on the side wall of the groove and connected with the side wall of the groove through a spring.

4. The double-lead fireproof and radiation-proof split door according to claim 2, characterized in that: The spring-loaded locking mechanism includes an elastic telescopic structure arranged on the protrusion and an insertion groove arranged on the side wall of the groove. The elastic telescopic structure includes a fixed plate and springs connected on both sides of the fixed plate, and a tenon connected to the spring. When the first door panel body is aligned with the second door panel body, force is applied up and down to squeeze the tenon so that the tenon enters the insertion groove for locking.

5. The double-lead fireproof and radiation-proof split door according to claim 2, characterized in that: The spring-loaded locking mechanism can also be provided with an outwardly extending fixed structure, which includes a pressing spring arranged in a groove, whose end is connected to a spring, and the end of the spring is connected to a hook. A clamping piece is arranged at the lower part of the first door body plate and the upper part of the second main body plate. When the protrusion slides in the groove, the pressing spring is squeezed, the spring is compressed, and the hook extends from the plate body and is engaged with the clamping piece.

6. A double-lead fireproof and radiationproof split door according to any one of claims 1 to 5, characterized in that: To enhance the connection, the sides of the groove and the protrusion are provided with concave-convex matching serrations.

7. The double-lead fireproof and radiationproof split door according to claim 6, characterized in that: In order to enhance the limiting effect, folded edges are arranged on both sides of the groove, and bent hooks are arranged on the protrusion. When the protrusion is inserted into the groove, the hooks cooperate with the folded edges.

8. A double-lead fireproof and radiationproof split door according to any one of claims 1 to 5, characterized in that: Bend both ends of the duckbill-shaped folded steel plate downward and fix them to the frame keel.

9. A double-lead fireproof and radiationproof split door according to any one of claims 1 to 5, characterized in that: A heat-expandable sealing strip is arranged at the joint between the groove of the first door body and the second door body.

10. A double-lead fireproof and radiationproof split door according to any one of claims 1 to 5, characterized in that: A floating threshold is arranged at the bottom of the third door body. When the door is closed, the threshold rises and is embedded in the groove at the bottom of the door body; when the door is opened, the threshold drops and remains flush with the ground.

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