SMC light anti-explosion door leaf structure
By using SMC lightweight composite materials and a transmission mechanism design, the problems of existing air defense door structures being bulky, easily damaged, and having poor sealing performance have been solved, resulting in a lightweight, easy-to-operate, and highly efficient sealing explosion-proof door structure that ensures safety and stability.
Patent Information
- Application Number
- CN202520043285.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-01-08
AI Technical Summary
The existing underground civil defense project entrances have heavy structures, are difficult to transport and install, are easily damaged at the edges and corners, have difficulty in ensuring airtightness, are laborious and costly to open and close, and are prone to corrosion.
The door body is made of SMC lightweight composite material, combined with worm gear and helical gear transmission, and equipped with sealing beam and concealed lock to achieve lightweight and sealing performance. The door is opened and closed manually, and a jack is used to ensure stability.
It achieves a lightweight, high-strength, corrosion-resistant, and easy-to-operate explosion-proof door structure, ensuring sealing and stability, and effectively preventing the hazards of explosion shock waves.
Smart Images

Figure CN223814010U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of explosion -proof door, especially a kind of SMC lightweight explosion -proof door fan structure. BACKGROUND
[0002] Explosion-proof door is a kind of anti-blast protective equipment to resist the explosion that occurs occasionally outside industrial building, guarantee personnel life safety and industrial building internal equipment intact, not be harmed by explosion shock wave and effectively prevent explosion hazard continuation. It is widely used in engineering mouth of industrial site and underground civil air defense system, and explosion-proof door plays a vital role, it can effectively block explosion shock wave, flame and explosion produced debris when explosion occurs, and protect the safety of personnel and equipment.
[0003] At present, the civil air defense door used in the mouth of underground civil air defense engineering in China is often made of thick reinforced concrete and metal material, its main advantages are low price, simple manufacturing process, good protection performance to early nuclear radiation, but there are problems such as heavy structure, difficult transportation and installation, easy damage at corner, difficult to guarantee sealing performance, laborious opening and closing operation, high cost and easy corrosion. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of SMC lightweight explosion -proof door fan structure to solve the technical problems raised in the above background.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0006] A kind of SMC lightweight explosion -proof door fan structure, the explosion -proof door fan structure includes door frame, door fan body being rotatably installed on the door frame, first rotating shaft being rotatably installed in the door fan body, crank handle being fixedly installed on the first rotating shaft, worm being fixedly installed on the first rotating shaft, first fixed block being fixedly installed on one side of the door fan body, rotating rod being rotatably installed between two first fixed blocks, protection box being fixedly installed on one side of the door fan body, worm wheel being fixedly installed on the rotating rod, rotating block being fixedly installed on the rotating rod, connecting block being rotatably installed on the rotating block, connecting plate being fixedly installed on the connecting block, second fixed block being fixedly installed on one side of the door fan body, control plate being hingedly installed in the second fixed block and sealing beam being fixedly installed on the control plate, the first rotating shaft penetrates the door fan body, the worm is engaged with the worm wheel, and the end of the connecting plate away from the connecting block is rotatably connected with the control plate.
[0007] Further, the inside of the door fan body is rotatably connected with second rotating shaft, the second rotating shaft penetrates the door fan body, both ends of the door fan body are fixedly connected with hand wheel, and the side surface of the second rotating shaft is fixedly connected with first bevel gear.
[0008] Further, the third fixed block is fixedly connected to the inside of the door leaf body, two third fixed blocks are rotationally connected with a threaded rod, the threaded rod penetrates through one of the third fixed blocks and is fixedly connected with a second bevel gear.
[0009] Further, the second bevel gear is engaged with the first bevel gear, the side surface of the threaded rod is screwed with a lifting block, the inside of the door leaf body is rotationally connected with a rotating plate, the side surface of the lifting block is rotationally connected with a connecting rod, one end of the connecting rod away from the lifting block is rotationally connected with one side of the rotating plate.
[0010] Further, one side of the rotating plate is rotationally connected with a lifting rod, the top and the bottom of the door frame are fixedly connected with a limiting frame, one end of the lifting rod away from the rotating plate is rotationally connected with a hidden lock, the hidden lock is slidingly connected in the inside of the limiting frame.
[0011] Further, one side of the door leaf body is fixedly connected with a fourth fixed block, a threaded hole is formed in the inside of the fourth fixed block, a jack is screwed in the inside of the fourth fixed block.
[0012] The utility model discloses compared with prior art's beneficial effect is:
[0013] The utility model discloses simple structure, convenient to use, through the setting of door leaf body and sealing beam etc. part, guarantees the strength of door leaf body under the condition of lightening the weight, makes the structure of explosion -proof door leaf light, guarantees the sealing of explosion -proof door leaf, can effectively prevent the shock wave of explosion. ACCURACY OF DRAWINGS
[0014] Figure 1 It is the structure schematic drawing of the utility model;
[0015] Figure 2 It is the structure schematic drawing of another view of the utility model;
[0016] Figure 3 It is the installation schematic drawing of sealing beam of the utility model;
[0017] Figure 4 It is the installation schematic drawing of hidden lock of the utility model;
[0018] Figure 5 It is the cross section schematic drawing of door leaf body of the utility model;
[0019] In the drawings, 1 - door frame; 2 - door body; 3 - first rotating shaft; 4 - crank handle; 5 - worm; 6 - first fixed block; 7 - rotating rod; 8 - protection box; 9 - worm wheel; 10 - rotating block; 11 - connecting block; 12 - connecting plate; 13 - second fixed block; 14 - control plate; 15 - sealing beam; 16 - second rotating shaft; 17 - hand wheel; 18 - first helical gear; 19 - third fixed block; 20 - second helical gear; 21 - threaded rod; 22 - lifting block; 23 - rotating plate; 24 - connecting rod; 25 - lifting rod; 26 - limiting frame; 27 - dead bolt; 28 - fourth fixed block; 29 - jack. DETAILED DESCRIPTION
[0020] To make the purpose, technical scheme and advantages of the present application clearer, the following preferred embodiments are described in detail with reference to the drawings. However, it should be noted that many details in the description are only to make the reader have a thorough understanding of one or more aspects of the present application, and the aspects of the present application can be realized without these specific details.
[0021] As shown in Figures 1-5 A SMC lightweight explosion-proof door structure, the explosion-proof door structure comprises a door frame 1, a door body 2 rotatably installed on the door frame 1, a first rotating shaft 3 rotatably installed inside the door body 2, a crank handle 4 fixedly installed on the first rotating shaft 3, a worm 5 fixedly installed on the first rotating shaft 3, a first fixed block 6 fixedly installed on one side of the door body 2, a rotating rod 7 rotatably installed between the two first fixed blocks 6, a protection box 8 fixedly installed on one side of the door body 2, a worm wheel 9 fixedly installed on the rotating rod 7, a rotating block 10 fixedly installed on the rotating rod 7, a connecting block 11 rotatably installed on the rotating block 10, a connecting plate 12 fixedly installed on the connecting block 11, a second fixed block 13 fixedly installed on one side of the door body 2, a control plate 14 hingedly installed inside the second fixed block 13, and a sealing beam 15 fixedly installed on the control plate 14, the first rotating shaft 3 penetrates the door body 2, the worm 5 is engaged with the worm wheel 9, and the end of the connecting plate 12 away from the connecting block 11 is rotatably connected with the control plate 14.
[0022] The explosion-proof door structure is used, the door body 2 adopts SMC (Sheet Molding Compound) composite material, which has the advantages of light weight, high strength, corrosion resistance, good insulation and the like, and the inside of the door body 2 is in a honeycomb shape, so that the strength of the door body 2 is ensured and the weight of the door body 2 is reduced, the closing and opening of the two door bodies 2 can be completed by manually pushing the handle on the door body 2, then the handle is manually rotated, the first rotating shaft 3 is synchronously rotated by the rotation of the handle, the worm 5 is synchronously rotated by the rotation of the first rotating shaft 3, the worm wheel 9 is synchronously rotated by the rotation of the worm 5, the rotating rod 7 is synchronously rotated by the rotation of the worm wheel 9, the two rotating blocks 10 are synchronously rotated by the rotation of the rotating rod 7, the connecting block 11 is synchronously rotated by the rotation of the rotating block 10, the connecting plate 12 is synchronously rotated by the rotation of the connecting block 11, then the two control plates 14 are rotated along the second fixed block 13 as the center, so that the sealing beam 15 is lifted and lowered, the door body 2 and the door frame 1 are sealed by the lowering of the sealing beam 15, and the sealing between the door body 2 and the door frame 1 is stopped by the lifting of the sealing beam 15.
[0023] Further, in order to conveniently limit the door body 2 and the door frame 1, as shown in Figure 1 、 Figure 2 and Figure 4 , the second rotating shaft 16 is rotatably connected in the inside of the door body 2, the second rotating shaft 16 penetrates the door body 2, the hand wheel 17 is fixedly connected to the two ends of the door body 2, and the first bevel gear 18 is fixedly connected to the side surface of the second rotating shaft 16.
[0024] The third fixed block 19 is fixedly connected in the inside of the door body 2, the threaded rod 21 is rotatably connected between the two third fixed blocks 19, the threaded rod 21 penetrates one of the third fixed blocks 19 and is fixedly connected with the second bevel gear 20.
[0025] The second bevel gear 20 is engaged with the first bevel gear 18, the lifting block 22 is screwed on the side surface of the threaded rod 21, the rotating plate 23 is rotatably connected in the inside of the door body 2, the connecting rod 24 is rotatably connected to the side of the rotating plate 23 and the side surface of the lifting block 22.
[0026] The lifting rod 25 is rotatably connected to the side of the rotating plate 23, the limiting frame 26 is fixedly connected to the top and the bottom of the door frame 1, the dead bolt 27 is rotatably connected to the end of the lifting rod 25 away from the rotating plate 23, and the dead bolt 27 is slidably connected in the inside of the limiting frame 26.
[0027] The explosion-proof door leaf structure in use, after the door leaf body 2 is closed, the hand wheel 17 is manually rotated, the second rotating shaft 16 and the first bevel gear 18 are synchronously rotated by the rotation of the hand wheel 17, the second bevel gear 20 is synchronously rotated by the rotation of the first bevel gear 18, the threaded rod 21 is synchronously rotated by the rotation of the second bevel gear 20, the lifting block 22 can be lifted along the direction of the threaded rod 21 by the rotation of the threaded rod 21, when the lifting block 22 is lowered, the two connecting rods 24 are synchronously moved downwards, so that the two rotating plates 23 are rotated, the upper lifting rod 25 is moved downwards by the rotation of the rotating plate 23, the lower lifting rod 25 is moved upwards, finally the plurality of lifting rods 25 are simultaneously moved to the inside, finally the plurality of hidden locks 27 are moved to the inside of the door leaf body 2, until the hidden lock 27 is removed from the inside of the limiting frame 26, at this time, the door frame 1 and the door leaf body 2 are not limited, the door leaf body 2 can be opened, conversely, when the door leaf body 2 is closed, the hand wheel 17 is reversely rotated, finally the plurality of hidden locks 27 are moved to the outside, finally the plurality of hidden locks 27 are inserted into the inside of the limiting frame 26, the limiting between the door frame 1 and the door leaf body 2 is completed.
[0028] Further, in order to ensure the stability of the door leaf body 2 in the open or closed state, as shown in Figure 1 and Figure 2 One side of the door leaf body 2 is fixedly connected with the fourth fixed block 28, a threaded hole is formed in the inside of the fourth fixed block 28, and the jack 29 is screwed in the inside of the fourth fixed block 28.
[0029] The explosion-proof door leaf structure in use, by rotating the jack 29, the pressure of the jack is continuously applied to the top rod by the principle of the screw, the top head can contact the bottom surface or the part to be fixed, and then slowly rotate after contacting, until the pressure of the jack is enough to ensure that the door leaf does not move, so as to ensure the stability of the door leaf body 2 in the open or closed state.
[0030] The above is only the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, these improvements and refinements should also be regarded as the protection scope of the present application.
Claims
1. A SMC lightweight explosion door leaf structure, characterized in that: The explosion -proof door structure includes a door frame, a door body rotatably installed on the door frame, a first rotating shaft rotatably installed inside the door body, a crank handle fixedly installed on the first rotating shaft, a worm fixedly installed on the first rotating shaft, a first fixed block fixedly installed on one side of the door body, a rotating rod rotatably installed between the two first fixed blocks, a protection box fixedly installed on one side of the door body, a worm wheel fixedly installed on the rotating rod, a rotating block fixedly installed on the rotating rod, a connecting block rotatably installed on the rotating block, a connecting plate fixedly installed on the connecting block, a second fixed block fixedly installed on one side of the door body, a control plate hingedly installed inside the second fixed block, and a sealing beam fixedly installed on the control plate, the first rotating shaft penetrates the door body, the worm is engaged with the worm wheel, and the connecting plate is rotatably connected with the control plate at an end away from the connecting block.
2. A SMC lightweight explosion door leaf structure according to claim 1, characterized in that: The inside of the door body is rotatably connected with a second rotating shaft, the second rotating shaft penetrates the door body, both ends of the door body are fixedly connected with a hand wheel, and a first bevel gear is fixedly connected to the side surface of the second rotating shaft.
3. A SMC lightweight explosion door leaf structure according to claim 2, characterized in that: The inside of the door body is fixedly connected with a third fixed block, a threaded rod is rotatably connected between the two third fixed blocks, the threaded rod penetrates one of the third fixed blocks and is fixedly connected with a second bevel gear.
4. A SMC lightweight explosion door leaf structure according to claim 3, characterized in that: The second bevel gear is engaged with the first bevel gear, a lifting block is screwed to the side surface of the threaded rod, a rotating plate is rotatably connected inside the door body, a connecting rod is rotatably connected to the side surface of the lifting block, and one end of the connecting rod away from the lifting block is rotatably connected to one side of the rotating plate.
5. A SMC lightweight explosion door leaf structure according to claim 4, characterized in that: One side of the rotating plate is rotatably connected with a lifting rod, the top and bottom of the door frame are fixedly connected with a limiting frame, one end of the lifting rod away from the rotating plate is rotatably connected with a hidden lock, and the hidden lock is slidably connected inside the limiting frame.
6. A SMC lightweight explosion door leaf structure according to claim 1, characterized in that: One side of the door body is fixedly connected with a fourth fixed block, a threaded hole is formed in the inside of the fourth fixed block, and a jack is screwed in the inside of the fourth fixed block.