Seam covering plate structure for steel-wood fireproof door

Abstract

The utility model discloses a seam covering plate structure for a steel-wood fireproof door, and relates to the technical field of fire-fighting equipment, in particular to a fireproof door, a main body is movably installed on one side of the fireproof door, the main body is formed by movably splicing a movable cover plate and a fixed cover plate, a first threaded hole is formed in the inner side of the movable cover plate, and a second threaded hole is formed in the outer side of the fixed cover plate. Worm wheels are rotationally connected to the upper end and the lower end of the inner side of the fixed cover plate correspondingly, screw rods are fixedly connected to the two sides of each worm wheel correspondingly, the two screw rods are symmetrically distributed, and a worm is rotationally connected to the inner side of the fixed cover plate. The clamping holes in the surface of the first rotating disc can be connected with a tool in a clamped mode, the first rotating disc can be driven by the tool to rotate so that the first rotating disc can drive the worm to be matched with the worm gear, the two symmetrically-distributed screw rods can rotate at the same time, the screw rods are matched with threads of the first threaded holes, and therefore the tool can be fixed. Therefore, the two movable cover plates can be driven to get close to and get away from the fixed cover plate simultaneously.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to a cover plate structure for a steel-wood fireproof door. Background Art

[0002] At present, with the rapid development of society, the fire door cover plate structure plays a very important role in construction. The fire door cover plate is a long fireproof plate specially set at the middle seam of the double-opening fire door. The width is the same as the height of the door leaf. Its function is to strengthen the sealing performance of the door seam and prevent smoke from spreading and flames from penetrating through the gap.

[0003] A fire door cover plate device disclosed in the Chinese utility model patent application disclosure specification CN209586154U adopts a special-shaped structure to improve the rigidity and bending strength of the middle seam of the door leaf, and a bending reinforcement plate is set on the inner side of the fixed door leaf to enable the door leaf to resist bending deformation when subjected to high-temperature heating. The fire-proof expansion seal provided between the door leaves effectively blocks the spread of fire. However, the fire door cover plate device still has the disadvantages of being inconvenient to operate during installation, and can only be used for fire doors of one thickness. Since fire doors are of many types and thicknesses, it cannot be adapted to fire doors of all thicknesses, which is inconvenient to use. Utility Model Content

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides a cover plate structure for a steel-wood fireproof door, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: it includes a fire door, a main body movably installed on one side of the fire door, the main body is movably spliced with a movable cover plate and a fixed cover plate, a first threaded hole is opened on the inner side of the movable cover plate, the upper and lower ends of the inner side of the fixed cover plate are rotatably connected to a worm gear, both sides of the worm gear are fixedly connected to screws, the two screws are symmetrically distributed, the inner side of the fixed cover plate is rotatably connected to a worm, the worm is meshed with the worm wheel, one end of the worm passes through the fixed cover plate and is fixedly connected to a first turntable, and the first turntable is rotatably installed on the surface of the fixed cover plate.

[0008] Optionally, the main body is made of metal steel, and a clamping hole is provided on the surface of the first turntable.

[0009] Optionally, a transmission rod is rotatably connected to the middle portion of the inner side of the fixed cover plate, a middle end of the transmission rod passes through and is fixedly connected to a first bevel gear, and the cross-section of the transmission rod is a regular hexagon.

[0010] Optionally, the inner side of the fixed cover is rotatably connected to a second bevel gear, the second bevel gear is meshed with the first bevel gear, one end of the second bevel gear passes through the fixed cover and is fixedly connected to a second turntable, the second turntable is rotatably installed on the surface of the fixed cover, and a card hole is opened on the surface of the second turntable.

[0011] Optionally, there are two movable cover plates, which are respectively located on both sides of the fixed cover plate. The middle inner parts of the two movable cover plates are rotatably connected to a rotating drum, and the inner sides of the two rotating drums are provided with a cavity with a regular hexagonal cross-section, and the cavity is adapted to the transmission rod, which is plug-connected to the rotating drum.

[0012] Optionally, the end of the rotating drum away from the transmission rod is fixedly connected to the first bevel gear rod, one end of the first bevel gear rod is meshedly connected to the second bevel gear rod, the second bevel gear rod is vertically distributed to the first bevel gear rod, and the end of the second bevel gear rod away from the first bevel gear rod is in the shape of a threaded rod.

[0013] Optionally, a movable cavity is opened on one side of the movable cover plate, and a trapezoidal slider and a limit block are slidably connected to the inner side of the movable cavity. The inner end of the limit block is provided with a slope, and the slope is slidably connected to the trapezoidal slider. A second threaded hole is opened on the inner side of the trapezoidal slider, and the second threaded hole is threadedly connected to one end of the second bevel gear rod.

[0014] Optionally, a limiting sliding groove is provided on the surface of the limiting block.

[0015] (3) Beneficial effects

[0016] The utility model provides a cover plate structure for a steel-wood fireproof door, which has the following beneficial effects:

[0017] 1. This steel-wood fire door cover plate structure can be connected with a tool through the clamping hole on the surface of the first turntable, and the first turntable can be driven to rotate by the tool, so that the driving worm and the worm wheel can be adapted, thereby making the two symmetrically distributed screws rotate at the same time, and the threads of the screws and the first threaded holes are adapted to drive the two movable cover plates to move closer and farther away from the fixed cover plate at the same time, so that the interval between the two movable cover plates can be adjusted, so that it can adapt to fire doors of different thicknesses, and also make it easier to operate during installation.

[0018] 2. This steel-wood fire door cover plate structure is connected to the rotating drum through a transmission rod, so that the transmission will not be affected when the movable cover plate moves. The trapezoidal slider can be slid by rotating the second bevel gear rod. The slope surface of the trapezoidal slider is adapted to the slope surface of the limit block, so that the limit block can be extended and retracted. After extension, it can contact the fire door to achieve positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a three-dimensional schematic diagram of the main structure of the utility model;

[0021] Figure 3 It is a cross-sectional schematic diagram of the main structure of the utility model;

[0022] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the structure of the middle A area;

[0023] Figure 5 For this utility model Figure 3 A magnified schematic diagram of the structure of the middle B area;

[0024] Figure 6 For this utility model Figure 3 A magnified schematic diagram of the structure of the middle C region.

[0025] In the figure: 1. Fire door; 2. Main body; 3. Movable cover; 4. Fixed cover; 5. First threaded hole; 6. Worm gear; 7. Screw; 8. Worm; 9. First turntable; 10. Clamping hole; 11. Transmission rod; 12. First bevel gear; 13. Second bevel gear; 14. Second turntable; 15. Rotating drum; 16. Cavity; 17. First bevel gear rod; 18. Second bevel gear rod; 19. Movable cavity; 20. Trapezoidal slider; 21. Second threaded hole; 22. Limit block; 23. Limit slide groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example 1

[0027] See also Figure 1 、 34. The utility model provides a technical solution: a cover plate structure for a steel-wood fire door, including a fire door 1, a main body 2 is movably installed on one side of the fire door 1, and the main body 2 is made of metal steel material, so that it is more resistant to burning in the event of a fire. The main body 2 is movably spliced with a fixed cover plate 4 through a movable cover plate 3. A first threaded hole 5 is provided on the inner side of the movable cover plate 3, and a worm gear 6 is rotatably connected to the upper and lower ends of the inner side of the fixed cover plate 4. Screws 7 are fixedly connected to both sides of the worm gear 6, and the two screws 7 are symmetrically distributed. A worm 8 is rotatably connected to the inner side of the fixed cover plate 4, and the worm 8 is meshed with the worm gear 6. One end of the worm 8 passes through the fixed cover plate 4 and is fixedly connected to a first turntable 9. A clamping hole 10 is provided on the surface of the first turntable 9. The first turntable 9 is rotatably installed on the surface of the fixed cover plate 4, and can be clamped with a tool through the clamping hole 10 on the surface of the first turntable 9. The first turntable 9 can be driven to rotate by the tool, so that it can drive the worm 8 and the worm gear 6 When the first turntable 9 is in use, the worm 8 on the other side is driven to rotate together, and the worm 8 is engaged with the worm gear 6, so that the worm gear 6 can also rotate. The rotation of the worm gear 6 can simultaneously drive the two screw rods 7 threadably adapted to the first threaded hole 5 to rotate. By controlling the direction of rotation of the first turntable 9, the two movable cover plates 3 can be controlled to move closer to or away from each other, so that the thickness of the fire door 1 actually used can be adjusted. Example 2

[0028] See also Figure 2 、 56. The utility model provides a technical solution: a cover plate structure for a steel-wood fireproof door, comprising a transmission rod 11 rotatably connected to the middle part of the inner side of the fixed cover plate 4, the middle end of the transmission rod 11 penetrates and is fixedly connected to a first bevel gear 12, the cross-section of the transmission rod 11 is a regular hexagon, the inner side of the fixed cover plate 4 is rotatably connected to a second bevel gear 13, the second bevel gear 13 is meshed with the first bevel gear 12, one end of the second bevel gear 13 penetrates the fixed cover plate 4 and is fixedly connected to a second turntable 14, the second turntable 14 is rotatably installed on the surface of the fixed cover plate 4, and a card hole 10 is opened on the surface of the second turntable 14, which is convenient for clamping with tools through the card hole 10, and cannot be rotated without tools, thereby preventing someone from dismantling it privately after installation. In addition, there are two movable cover plates 3, and the two movable cover plates 3 are respectively located on both sides of the fixed cover plate 4. The middle parts of the inner sides of the two movable cover plates 3 are rotatably connected to the rotating drum 15. The inner sides of the two rotating drums 15 are provided with a cavity 16 with a regular hexagonal cross-section. The cavity 16 is adapted to the transmission rod 11. The regular hexagon can effectively avoid idling of the surface during transmission, and at the same time has better performance and is more durable. The transmission rod 11 is plug-connected to the rotating drum 15. The end of the rotating drum 15 away from the transmission rod 11 is fixedly connected to the first bevel gear rod 17, and one end of the first bevel gear rod 17 is meshed with the second bevel gear rod 18. The second bevel gear rod 18 is vertically distributed with the first bevel gear rod 17, and the end of the second bevel gear rod 18 away from the first bevel gear rod 17 is a threaded rod The movable cover 3 is provided with a movable cavity 19 on one side, and a trapezoidal slider 20 and a limit block 22 are slidably connected to the inner side of the movable cavity 19. The inner end of the limit block 22 is provided with a slope, and the slope is slidably connected to the trapezoidal slider 20. A second threaded hole 21 is provided on the inner side of the trapezoidal slider 20. The second threaded hole 21 is threadedly connected to one end of the second bevel gear rod 18. A limited sliding groove 23 is provided on the surface of the limit block 22. By providing the limited sliding groove 23, the friction force can be increased when the limit block 22 contacts the fire door 1, so that the installation can be made more secure. The transmission rod 11 is sleeved with the rotating drum 15, so that the transmission will not be affected when the movable cover 3 is active. The trapezoidal slider 20 can be slid by rotating the second bevel gear rod 18, and the trapezoidal slider 20 is utilized. The slope surface is adapted to the slope surface of the limit block 22, so that the extension and retraction of the limit block 22 can be achieved. After extending, it can contact the fire door 1 to achieve the limit. When in use, the tool is first used to engage with the card hole 10 on the surface of the second turntable 14, so that the second turntable 14 can be driven to rotate under the action of the tool. When the second turntable 14 rotates, the second bevel gear 13 can be driven to move and rotate with it. Since the first bevel gear 12 and the second bevel gear 13 are meshed with each other, the first bevel gear 12 can be rotated together with it when the second bevel gear 13 rotates. The rotation of the first bevel gear 12 can drive the transmission rod 11 to rotate, and the transmission rod 11 is connected to the rotating drum 15, so that the rotating drum 15 and the first bevel gear rod 17 at the other end thereof can be driven to rotate.Because the transmission rod 11 and the rotating drum 15 are sleeved together, they can slide while transmitting. Designing the transmission rod 11 into a regular hexagonal prism shape can prevent idling. The rotation of the first bevel gear rod 17 can drive the rotation of the second bevel gear rod 18. The other end of the second bevel gear rod 18 is threadedly adapted to the second threaded hole 21, thereby allowing the trapezoidal slider 20 to slide. The sloped surface of the trapezoidal slider 20 in contact with the limit block 22 can achieve the extension and retraction of the limit block 22. When the limit block 22 is extended, it can contact the fire door 1 and achieve the limit position after installation through the huge friction generated by the limit slot 23, making the cover plate easier to operate during installation.

[0029] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel-wood fire door cover plate structure, comprising a fire door (1), characterized in that: A main body (2) is movably mounted on one side of the fire door (1), and the main body (2) is movably spliced with a fixed cover plate (4) via a movable cover plate (3). A first threaded hole (5) is provided on the inner side of the movable cover plate (3). The upper and lower ends of the inner side of the fixed cover plate (4) are rotatably connected to a worm gear (6). Both sides of the worm gear (6) are fixedly connected to screw rods (7), and the two screw rods (7) are symmetrically distributed. A worm gear (8) is rotatably connected to the inner side of the fixed cover plate (4), and the worm gear (8) is meshed with the worm gear (6). One end of the worm gear (8) passes through the fixed cover plate (4) and is fixedly connected to a first turntable (9). The first turntable (9) is rotatably mounted on the surface of the fixed cover plate (4).

2. A cover plate structure for a steel-wood fire door according to claim 1, characterized in that: The main body (2) is made of metal steel, and a clamping hole (10) is provided on the surface of the first turntable (9).

3. The cover plate structure for a steel-wood fire door according to claim 1, characterized in that: A transmission rod (11) is rotatably connected to the inner middle portion of the fixed cover plate (4), a first helical gear (12) is passed through and fixedly connected to the middle end of the transmission rod (11), and the cross section of the transmission rod (11) is a regular hexagon.

4. The cover plate structure for a steel-wood fire door according to claim 3, characterized in that: A second bevel gear (13) is rotatably connected to the inner side of the fixed cover plate (4), and the second bevel gear (13) is meshed with the first bevel gear (12). One end of the second bevel gear (13) passes through the fixed cover plate (4) and is fixedly connected to a second turntable (14). The second turntable (14) is rotatably mounted on the surface of the fixed cover plate (4), and a clamping hole (10) is provided on the surface of the second turntable (14).

5. The cover plate structure for a steel-wood fire door according to claim 3, characterized in that: There are two movable cover plates (3), which are respectively located on both sides of the fixed cover plate (4). The middle parts of the inner sides of the two movable cover plates (3) are rotatably connected to a rotating drum (15). The inner sides of the two rotating drums (15) are provided with a cavity (16) with a regular hexagonal cross-section. The cavity (16) is adapted to the transmission rod (11), and the transmission rod (11) is plug-connected to the rotating drum (15).

6. The cover plate structure for a steel-wood fire door according to claim 5, characterized in that: One end of the rotating drum (15) away from the transmission rod (11) is fixedly connected to a first helical gear rod (17), one end of the first helical gear rod (17) is meshingly connected to a second helical gear rod (18), the second helical gear rod (18) and the first helical gear rod (17) are arranged vertically, and one end of the second helical gear rod (18) away from the first helical gear rod (17) is in the shape of a threaded rod.

7. The cover plate structure for a steel-wood fireproof door according to claim 6, characterized in that: A movable cavity (19) is provided on one side of the movable cover plate (3), a trapezoidal slider (20) and a limit block (22) are slidably connected to the inner side of the movable cavity (19), a slope is provided on the inner side end of the limit block (22), and the slope is slidably connected to the trapezoidal slider (20), a second threaded hole (21) is provided on the inner side of the trapezoidal slider (20), and the second threaded hole (21) is threadedly connected to one end of the second helical gear rod (18).

8. The cover plate structure for a steel-wood fire door according to claim 7, characterized in that: A limiting sliding groove (23) is provided on the surface of the limiting block (22).

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