Fireproof door with warning function

Abstract

The utility model relates to the field of fireproof doors, and discloses a fireproof door with a warning function, which comprises a door frame, one end of the inner side of the door frame is rotatably connected with a fireproof door through a hinge, one side of the middle of the fireproof door is provided with a transverse groove, two-way lead screws are rotatably connected between two ends of the inner side of the transverse groove, and the two-way lead screws are symmetrically arranged in the thread direction. The two ends of the two-way lead screw are in threaded connection with threaded connection blocks, threaded holes matched with the two-way lead screw are formed in the two threaded connection blocks, a worm wheel is fixedly connected to the middle of the two-way lead screw, a rotating rod is rotationally connected to the middle of the inner side of the transverse groove, and a hexagonal hole is formed in the other end of the rotating rod. According to the utility model, under the condition that a non-worker does not use a tool, the alarm cannot be lowered by simply rotating the rotating handle, so that the alarm cannot be artificially damaged, the normal work of the alarm is ensured, and the technical effects of improving the safety are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fire doors, in particular to a fire door with a warning function. Background Art

[0002] Fire doors are a special type of door, mainly used in building fire protection design. They have strong flame retardancy, can effectively prevent the spread of fire, and buy precious time for the evacuation of personnel. Fire doors are made of high-strength materials such as steel, wood, etc., and are specially treated to ensure their fire resistance.

[0003] After searching, the Chinese patent authorization number CN219672512U discloses a fire door with a warning function, including a door frame and a warning mechanism. The door frame is rotatably connected to the fire door body, and a sprinkler mechanism is provided at the bottom of the front side of the fire door body to prevent the spread of fire. A reset frame is hinged between the inner wall surface of the door frame and the top of the surface of the fire door body; the warning mechanism includes a protective frame with open top and bottom.

[0004] The fire door with warning function in the above patent has the following shortcomings: during maintenance, the staff can twist the handle to drive the second bevel gear to rotate through the connection of the transmission rod, so that the threaded sleeve can be raised and lowered along the surface of the threaded rod, and then the warning device body can be driven down through the connection of the connecting rod, and the staff can perform maintenance operations on the warning device body. However, the handle is placed on the door and can be turned by non-staff members such as children, making it easy for the warning device to be damaged by human factors when it descends, resulting in failure and damage to the alarm prompt function, affecting the user experience. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a fireproof door with a warning function.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A fire door with a warning function comprises a door frame, one end of the inner side of the door frame is rotatably connected to the fire door through a hinge, a transverse groove is provided on one side of the middle part of the fire door, a two-way screw is rotatably connected between the two ends of the inner side of the transverse groove, the thread directions of the two-way screw are symmetrically arranged, both ends of the two-way screw are screwed with screw blocks, two screw blocks are provided with threaded holes matched with the two-way screw, a worm gear is fixedly connected to the middle part of the two-way screw, a rotating rod is rotatably connected to the middle part of the inner side of the transverse groove, the other end of the rotating rod is provided with a hexagonal hole, a worm gear is fixedly connected to the circumferential surface of the rotating rod, and the worm gear is meshed with the worm gear, and the setting of the hexagonal hole allows the staff to rotate it by tools, and others cannot rotate it at will.

[0008] As a further solution of the utility model, a strip groove is opened inside the fire door at the top of the transverse groove, a strip hole and a rectangular hole are opened on one side of the strip groove close to the transverse groove, and the rectangular hole is located at the bottom of the strip hole.

[0009] As a further solution of the utility model, a lifting block is slidably connected in the rectangular hole, and sliding rods are fixedly connected between the top and bottom ends of the rectangular hole. The two sliding rods slide through the two ends of the lifting block respectively, and circular holes matching the sliding rods are opened at both ends of the lifting block.

[0010] As a further solution of the utility model, the lifting block is rotatably connected to a rotating shaft, a circular hole adapted to the rotating shaft is opened in the middle of the lifting block, the rotating shaft is located inside the strip groove and fixedly connected to a second bevel gear, and the other end of the rotating shaft is fixedly connected to a rotating handle.

[0011] As a further solution of the utility model, both ends of the outer bottom of the lifting block are rotatably connected with connecting rods, and the other ends of the two connecting rods are respectively rotatably connected to adjacent screw blocks.

[0012] As a further solution of the utility model, a screw is rotatably connected between the top and bottom of the strip groove, a first bevel gear is fixedly connected to the screw near the bottom, and the first bevel gear is adapted to the second bevel gear, a moving block is threaded on the circumferential surface of the screw, a fixed rod is fixedly connected to one side of the moving block close to the strip hole, and an alarm is fixedly connected to the fixed rod through the strip hole.

[0013] As a further solution of the utility model, the fire door is fixedly connected to a protective cover at the top of the strip hole, the protective cover can protect the alarm, and the fire door is also provided with a glass observation window and a handle.

[0014] The beneficial effects of the utility model are:

[0015] The utility model adopts the technical means of a lifting block, a rotating shaft, a rotating handle, a second bevel gear, a transverse groove, a two-way screw rod, a screw connection block, a connecting rod, a worm wheel, a rotating rod, a worm and a hexagonal hole. The maintenance personnel use a hexagonal wrench to cooperate with the hexagonal hole to make the worm wheel rotate with the worm, so that the two-way screw rod rotates. The two screw connection blocks are close to each other and under the action of the connecting rod, the lifting block rises with the rotating shaft and the second bevel gear, so that the second bevel gear is meshed with the first bevel gear. Then the rotating handle is rotated to rotate the screw rod through the second bevel gear and the first bevel gear, driving the moving block and the alarm to descend, so that the maintenance personnel can quickly repair the alarm, effectively solving the problems raised in the background technology, and then realizing that non-staff can not lower the alarm by simply rotating the rotating handle without the help of tools, so that the alarm will not be damaged by human beings, ensuring the normal operation of the alarm and improving the technical effect of safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a fire door with a warning function proposed by the utility model;

[0017] Figure 2 A schematic cross-sectional view of a fire door with a warning function proposed by the utility model;

[0018] Figure 3 A fire door with a warning function proposed by the utility model Figure 2 A schematic diagram of the structure enlarged at A;

[0019] Figure 4 This is a partial structural diagram of a fire door with a warning function proposed by the utility model;

[0020] Figure 5 A fire door with a warning function proposed by the utility model Figure 4 Schematic diagram of the enlarged structure at B.

[0021] In the figure: 1. door frame; 2. fire door; 201. strip hole; 202. strip groove; 203. rectangular hole; 3. glass observation window; 4. handle; 5. protective cover; 6. screw; 7. moving block; 8. alarm; 9. first bevel gear; 10. slide bar; 11. lifting block; 12. rotating shaft; 13. rotating handle; 14. second bevel gear; 15. transverse groove; 16. bidirectional screw; 17. screw block; 18. connecting rod; 19. worm gear; 20. rotating rod; 21. worm; 22. hexagonal hole. DETAILED DESCRIPTION

[0022] 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 of the embodiments.

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] Reference Figure 1-Figure 5 A fire door with a warning function comprises a door frame 1, one end of the inner side of the door frame 1 is rotatably connected to a fire door 2 through a hinge, a transverse groove 15 is provided on one side of the middle part of the fire door 2, a bidirectional screw 16 is rotatably connected between the two ends of the inner side of the transverse groove 15, the thread direction of the bidirectional screw 16 is symmetrically arranged, both ends of the bidirectional screw 16 are screwed with screw blocks 17, and the two screw blocks 17 are provided with threaded holes adapted to the bidirectional screw 16, a worm gear 19 is fixedly connected to the middle part of the bidirectional screw 16, a rotating rod 20 is rotatably connected to the middle part of the inner side of the transverse groove 15, a hexagonal hole 22 is provided at the other end of the rotating rod 20, a worm 21 is fixedly connected to the circumferential surface of the rotating rod 20, and the worm 21 is meshed with the worm wheel 19, the arrangement of the worm wheel 19 and the worm 21 realizes that the rotation of the worm 21 drives the bidirectional screw 16 to rotate, and when the worm 21 does not rotate, the worm wheel 19 will not shake.

[0025] In this embodiment, a strip groove 202 is opened inside the fire door 2 at the top of the transverse groove 15 , a strip hole 201 and a rectangular hole 203 are opened on one side of the strip groove 202 close to the transverse groove 15 , and the rectangular hole 203 is located at the bottom of the strip hole 201 .

[0026] In this embodiment, a lifting block 11 is slidably connected in the rectangular hole 203, and a sliding rod 10 is fixedly connected between the top and bottom ends of the rectangular hole 203. The two sliding rods 10 slide through the two ends of the lifting block 11 respectively, and circular holes matching the sliding rods 10 are opened at both ends of the lifting block 11.

[0027] In this embodiment, a rotating shaft 12 is rotatably connected to the lifting block 11, and a circular hole adapted to the rotating shaft 12 is opened in the middle of the lifting block 11. The rotating shaft 12 is located inside the strip groove 202 and is fixedly connected to a second bevel gear 14. The other end of the rotating shaft 12 is fixedly connected to a rotating handle 13. The rotation of the rotating handle 13 is achieved by rotating the screw rod 6.

[0028] In this embodiment, both ends of the outer bottom of the lifting block 11 are rotatably connected with connecting rods 18, and the other ends of the two connecting rods 18 are rotatably connected to the adjacent screw blocks 17. The lifting and lowering of the lifting block 11 is achieved by the arrangement of the two connecting rods 18.

[0029] In this embodiment, a screw rod 6 is rotatably connected between the top and the bottom of the strip groove 202, and a first bevel gear 9 is fixedly connected to the screw rod 6 near the bottom, and the first bevel gear 9 is adapted to the second bevel gear 14. A moving block 7 is screwed on the circumferential surface of the screw rod 6, and a fixing rod is fixedly connected to the side of the moving block 7 near the strip hole 201, and the fixing rod passes through the strip hole 201 and is fixedly connected to an alarm 8. The alarm 8 can be raised and lowered by setting the moving block 7 and the screw rod 6.

[0030] In this embodiment, a protective cover 5 is fixedly connected to the fire door 2 at the top of the strip hole 201 , and a glass observation window 3 and a handle 4 are also provided on the fire door 2 .

[0031] Working principle: A fire door with a warning function. When in use, the alarm 8 is located inside the protective cover 5, and the protective cover 5 protects the alarm 8. At the same time, the alarm 8 is located at a higher position and will not be damaged by human beings, so as to prevent it from being damaged by bumps. When a fire occurs, the alarm 8 starts to work to remind the user and improve the user's evacuation efficiency. When the alarm 8 needs to be replaced or repaired, the maintenance personnel use the hexagonal wrench with the hexagonal hole 22 to make the worm 21 rotate with the worm wheel 19, so that the two-way screw rod 16 rotates, and the two screw blocks 17 are close to each other. Under the action of the connecting rod 18, the lifting block 11 rises with the rotating shaft 12 and the second bevel gear 14, so that the second bevel gear 14 is meshed with the first bevel gear 9. The second bevel gear 14 and the first bevel gear 9 are both provided with radians, so that when the second bevel gear 14 and the first bevel gear 9 are in contact, they can be normally meshed. Then, the rotating handle 13 is turned to rotate the screw rod 6 through the second bevel gear 14 and the first bevel gear 9, driving the moving block 7 and the alarm 8 to descend, so that the maintenance personnel can quickly repair the alarm 8 without carrying a ladder.

[0032] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0033] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0034] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fire door with a warning function, comprising a door frame (1), characterized in that: One end of the inner side of the door frame (1) is rotatably connected to the fire door (2) through a hinge, a transverse groove (15) is provided on one side of the middle of the fire door (2), a bidirectional screw rod (16) is rotatably connected between the two ends of the inner side of the transverse groove (15), the thread direction of the bidirectional screw rod (16) is symmetrically arranged, both ends of the bidirectional screw rod (16) are screwed with screw blocks (17), and both screw blocks (17) are provided with threaded holes matched with the bidirectional screw rod (16), a worm wheel (19) is fixedly connected to the middle of the bidirectional screw rod (16), a rotating rod (20) is rotatably connected to the middle of the inner side of the transverse groove (15), the other end of the rotating rod (20) is provided with a hexagonal hole (22), a worm wheel (21) is fixedly connected to the circumferential surface of the rotating rod (20), and the worm wheel (21) is meshed with the worm wheel (19).

2. The fire door with warning function according to claim 1, characterized in that: A strip groove (202) is provided inside the fireproof door (2) at the top of the transverse groove (15), a strip hole (201) and a rectangular hole (203) are provided on one side of the strip groove (202) close to the transverse groove (15), and the rectangular hole (203) is located at the bottom of the strip hole (201).

3. The fire door with warning function according to claim 2, characterized in that: A lifting block (11) is slidably connected in the rectangular hole (203), and a sliding rod (10) is fixedly connected between the top and bottom ends of the rectangular hole (203). The two sliding rods (10) slide through the two ends of the lifting block (11) respectively, and circular holes matching the sliding rods (10) are provided at both ends of the lifting block (11).

4. The fire door with warning function according to claim 3, characterized in that: The lifting block (11) is rotatably connected to a rotating shaft (12); a circular hole matching the rotating shaft (12) is provided in the middle of the lifting block (11); a second bevel gear (14) is fixedly connected to the rotating shaft (12) inside the strip groove (202); and a rotating handle (13) is fixedly connected to the other end of the rotating shaft (12).

5. The fire door with warning function according to claim 4, characterized in that: Both ends of the outer bottom of the lifting block (11) are rotatably connected to connecting rods (18), and the other ends of the two connecting rods (18) are respectively rotatably connected to adjacent screw blocks (17).

6. The fire door with warning function according to claim 2, characterized in that: A screw rod (6) is rotatably connected between the top and bottom of the strip groove (202); a first bevel gear (9) is fixedly connected to the screw rod (6) near the bottom, and the first bevel gear (9) is matched with the second bevel gear (14); a moving block (7) is screwed on the circumferential surface of the screw rod (6); a fixed rod is fixedly connected to the side of the moving block (7) near the strip hole (201); and the fixed rod passes through the strip hole (201) and is fixedly connected to an alarm (8).

7. The fire door with warning function according to claim 1, characterized in that: The fireproof door (2) is fixedly connected to a protective cover (5) at the top of the strip-shaped hole (201), and the fireproof door (2) is also provided with a glass observation window (3) and a handle (4).

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