A suspended fire hazard alarm device

Abstract

This utility model relates to the technical field of fire alarm equipment, and in particular to a suspended fire hazard alarm device, including a support base with a base installed at the bottom. When the threaded rod rotates, the movable ring moves linearly along the threaded rod. The guide post and the slide groove guide and prevent the movable ring from rotating. When the movable ring moves linearly, it drives the movable tube to slide on the outer ring surface of the fixed tube through the guide post, thereby realizing the up and down movement of the movable tube, which in turn drives the fire alarm device body below to adjust its height. When the turntable rotates, the extrusion groove exerts an extrusion or release effect on the extrusion post. The extrusion post drives the limit rod to slide within the fixed block, realizing the extension or retraction of the limit rod. When it is necessary to fix the bearing frame and the limit frame, the limit rod extends and enters the limit hole to achieve limit fixation. When it is necessary to disassemble, the limit rod retracts to release the limit, thereby facilitating the installation and disassembly of the fire alarm device body, making it convenient to operate and more practical.

Description

Technical Field

[0001] This utility model relates to the technical field of fire alarm equipment, and in particular to a suspended fire hazard alarm device. Background Technology

[0002] Fire hazard alarm equipment is a type of intelligent safety device specifically designed to detect abnormal conditions and issue alarm signals in a timely manner when a fire occurs in its early stages or when there is a potential fire risk, so as to remind people to take countermeasures, avoid fire accidents, or reduce fire losses.

[0003] Chinese patent website discloses a suspended fire detector alarm for smart fire protection, publication number CN212929321U. It includes an installation mechanism comprising an installation plate, a connecting rod, a fixing rod, an outer sleeve, and bolts. The connecting rod is movably inserted into the top of the outer sleeve, and the installation plate is fixedly welded to the top of the connecting rod. The fixing rod is movably inserted into one side of the outer sleeve. One end of the fixing rod, located inside the outer sleeve, passes through the connecting rod and the other side wall of the outer sleeve and extends to the outside of the outer sleeve. This invention effectively solves the problem that existing suspended fire detector alarms for smart fire protection are generally suspended from the ceiling by a bracket, and the bracket and alarm are connected by bolts. Because the alarm requires regular maintenance or inspection, disassembly during this process can easily damage the threaded grooves, leading to stripping and other problems, requiring complete replacement and resulting in significant losses.

[0004] The solution also has the following problems: the fire alarm is fixed to the ceiling by a connecting rod and a mounting plate. However, in some floors with high ceilings, the alarm cannot be adjusted for height. Therefore, it is not convenient to maintain or inspect the alarm regularly after installation. Workers need to use a tall A-frame ladder to climb and disassemble it. However, working at heights poses certain safety hazards and has low practicality. Therefore, it has certain drawbacks.

[0005] Therefore, in order to solve the above problems, this utility model provides a suspended fire hazard alarm device. Utility Model Content

[0006] The purpose of this utility model is to provide a suspended fire hazard alarm device. By adjusting the height of the fire alarm device and quickly disassembling and assembling it, the device can be easily repaired or maintained, thus solving the problems mentioned in the background art. Ultimately, this device facilitates the installation, disassembly, and maintenance of the fire alarm device itself, achieving convenient operation and better practicality.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a suspended fire hazard alarm device, including a support base, a base installed at the bottom of the support base, a fixed tube installed at the bottom of the base, a movable tube installed on the outer ring surface of the fixed tube, an installation frame provided at the bottom of the movable tube, a bearing frame installed at the bottom of the installation frame, a limiting frame installed on the outer side of the bearing frame, limiting holes opened at one end of the four inner side walls of the limiting frame, fixing blocks installed at the four corners of the inner top of the bearing frame, limiting rods installed inside the fixing blocks extending to the outside of the bearing frame and connecting into the limiting holes, and a fire alarm device body installed at the bottom of the limiting frame.

[0008] Preferably, a first servo motor is installed at one outer end of the base, and a first bevel gear is installed inside the base through the output shaft of the first servo motor. A threaded rod is installed between the inner top of the base and the inner bottom of the fixed tube. A second bevel gear is installed at the top end of the outer ring surface of the threaded rod, and the second bevel gear meshes with the first bevel gear.

[0009] Preferably, a movable ring is threadedly connected to the outer ring surface of the threaded rod, and symmetrical grooves are provided at both ends of the outer side of the fixed tube. Guide posts are installed at both ends of the outer side of the movable ring and inside the two grooves.

[0010] Preferably, the inner wall of the movable tube is slidably connected to the outer ring surface of the fixed tube, and the end of the guide post away from the movable ring is connected to the top end of the inner wall of the movable tube.

[0011] Preferably, a fixing ear is installed on the top of the support frame, a second servo motor is installed on one outer end of the fixing ear, a third bevel gear is installed after the output shaft of the second servo motor passes through the fixing ear, and a fourth bevel gear is installed on the top of the support frame near the third bevel gear, and the fourth bevel gear meshes with the third bevel gear.

[0012] Preferably, the bottom of the fourth bevel gear is equipped with a rotating shaft that extends through the bearing frame and into it, and the bottom of the rotating shaft is equipped with a turntable, the bottom of the turntable having four extrusion grooves arranged in a circular array.

[0013] Preferably, an extrusion column is installed at one end of the limiting rod and inside the extrusion groove, and the outer ring surface of the limiting rod is slidably connected to the inside of the fixing block.

[0014] Preferably, the outer ring surface dimension of the limiting rod is adapted to the inner wall dimension of the limiting hole, and the limiting rod can be inserted into the interior of the limiting hole after the bearing frame is located inside the limiting frame.

[0015] In summary, this utility model has the following beneficial technical effects:

[0016] This suspended fire hazard alarm device features a movable ring that moves linearly along the threaded rod when the threaded rod rotates. The guide post and slide groove guide and prevent the movable ring from rotating. During this linear movement, the movable ring guides the movable tube to slide on the outer ring surface of the fixed tube, allowing the movable tube to move up and down. This, in turn, adjusts the height of the fire alarm device body below. When the turntable rotates, the compression groove exerts a compression or release effect on the compression post. Because the limiting rod is slidably connected to the fixed block, the compression post causes the limiting rod to slide within the fixed block, allowing it to extend or retract. When the support frame and limiting frame need to be fixed, the limiting rod extends and engages with the limiting hole for fixation. When disassembly is required, the limiting rod retracts to release the limit, facilitating the installation, disassembly, and maintenance of the fire alarm device body. This design offers convenient operation and superior practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a utility model Figure 1 Schematic diagram of the internal structure of the base and fixing tube;

[0019] Figure 3 This is a utility model Figure 2 Schematic diagram of the internal structure of the base;

[0020] Figure 4 This is a utility model Figure 1 Schematic diagram of the layered structure of the mounting frame;

[0021] Figure 5 This is a utility model Figure 4 Schematic diagram of the internal structure of the middle limiting frame;

[0022] Figure 6 This is a utility model Figure 5 A schematic diagram of the layered structure of the limiting frame.

[0023] Explanation of reference numerals in the attached drawings: 1. Support base; 2. Base; 3. Fixed tube; 301. Slide groove; 4. Movable tube; 5. Mounting frame; 6. Bearing frame; 7. Limiting frame; 701. Limiting hole; 8. Fixed block; 9. Limiting rod; 10. Fire alarm equipment body; 11. First servo motor; 12. First bevel gear; 13. Threaded rod; 14. Second bevel gear; 15. Movable ring; 16. Guide column; 17. Fixed ear; 18. Second servo motor; 19. Third bevel gear; 20. Fourth bevel gear; 21. Rotating shaft; 22. Turntable; 2201. Extrusion groove; 23. Extrusion column. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Figure 6 The present invention will be described in further detail below.

[0025] A suspended fire hazard alarm device, referring to Figure 1 - Figure 6 The device includes a support base 1, a base 2 installed at the bottom of the support base 1, a fixed tube 3 installed at the bottom of the base 2, a movable tube 4 installed on the outer ring surface of the fixed tube 3, an installation frame 5 at the bottom of the movable tube 4, a bearing frame 6 installed at the bottom of the installation frame 5, a limit frame 7 installed on the outer side of the bearing frame 6, a limit hole 701 opened at one end of each of the four inner side walls of the limit frame 7, a fixing block 8 installed at each of the four corners of the inner top of the bearing frame 6, a limit rod 9 installed inside the fixing block 8 extending to the outside of the bearing frame 6 and connecting to the inside of the limit hole 701, and a fire alarm device body 10 installed at the bottom of the limit frame 7.

[0026] Reference Figure 1 - Figure 3 A first servo motor 11 is installed at one end of the base 2. The output shaft of the first servo motor 11 passes through the interior of the base 2 and a first bevel gear 12 is installed thereon. A threaded rod 13 is installed between the top inner side of the base 2 and the bottom inner side of the fixed tube 3. A second bevel gear 14 is installed at the top end of the outer ring surface of the threaded rod 13. The second bevel gear 14 meshes with the first bevel gear 12. After the first servo motor 11 starts, its output shaft drives the first bevel gear 12 to rotate. Since the first bevel gear 12 and the second bevel gear 14 mesh with each other, the second bevel gear 14 will rotate accordingly, thereby driving the threaded rod 13 to rotate. A movable ring 15 is threadedly connected to the outer ring surface of the threaded rod 13. Sliding grooves 301 are symmetrically opened at both ends of the outer side of the fixed tube 3. The outer side of the movable ring 15... Guide posts 16 are installed at both ends and inside the two slide grooves 301. When the threaded rod 13 rotates, the movable ring 15 is threadedly connected to the threaded rod 13 and guided and restricted within the slide groove 301 by the guide posts 16. Therefore, the movable ring 15 will move linearly along the threaded rod 13. The guide posts 16 and the slide grooves 301 serve to guide and prevent the movable ring 15 from rotating. The inner wall of the movable tube 4 is slidably connected to the outer ring surface of the fixed tube 3, and the end of the guide post 16 away from the movable ring 15 is connected to the top end of the inner wall of the movable tube 4. When the movable ring 15 moves linearly, it drives the movable tube 4 to slide on the outer ring surface of the fixed tube 3 through the guide posts 16, thereby realizing the up and down movement of the movable tube 4, thereby driving the fire alarm device body 10 below to adjust its height.

[0027] Reference Figure 4 - Figure 6A fixing lug 17 is mounted on the top of the support frame 6. A second servo motor 18 is mounted on one end of the fixing lug 17. The output shaft of the second servo motor 18 passes through the fixing lug 17 and is mounted on a third bevel gear 19. A fourth bevel gear 20 is mounted on the top of the support frame 6 near the third bevel gear 19. The fourth bevel gear 20 meshes with the third bevel gear 19. When the second servo motor 18 starts, its output shaft drives the third bevel gear 19 to rotate. Because the third bevel gear 19 meshes with the fourth bevel gear 20, the fourth bevel gear 20 will rotate as well. A rotating shaft 21 is mounted on the bottom of the fourth bevel gear 20 and extends through the support frame 6 into it. A turntable 22 is mounted on the bottom of the rotating shaft 21. The bottom of the turntable 22 has four extrusion grooves 2201 arranged in a circular array. The rotation of the fourth bevel gear 20 drives the rotating shaft 21 to rotate, and the rotating shaft 21 then drives the turntable 22 to rotate. When the turntable 22 rotates, the extrusion grooves 2201 at its bottom will rotate accordingly.

[0028] Reference Figure 1 - Figure 6 An extrusion column 23 is installed at one end of the limiting rod 9 and inside the extrusion groove 2201. The outer ring surface of the limiting rod 9 is slidably connected to the inside of the fixing block 8. When the turntable 22 rotates, the extrusion groove 2201 extrudes or releases the extrusion column 23. Since the limiting rod 9 is slidably connected to the fixing block 8, the extrusion column 23 will drive the limiting rod 9 to slide inside the fixing block 8, thereby extending or retracting the limiting rod 9. The outer ring surface size of the limiting rod 9 is adapted to the inner wall size of the limiting hole 701. After the bearing frame 6 is located inside the limiting frame 7, the limiting rod 9 can be connected to the inside of the limiting hole 701. When it is necessary to fix the bearing frame 6 and the limiting frame 7, the limiting rod 9 is extended and connected to the limiting hole 701 to achieve limiting fixation. When it is necessary to disassemble, the limiting rod 9 is retracted to release the limiting, which facilitates the installation, disassembly and maintenance of the fire alarm device body 10.

[0029] The implementation principle of a suspended fire hazard alarm device according to this utility model embodiment is as follows: When using the device, the first servo motor 11 and the second servo motor 18 are preferably of type HBS57. Both the first servo motor 11 and the second servo motor 18 are electrically connected to an external power supply through a switch. After the first servo motor 11 is started, its output shaft drives the first bevel gear 12 to rotate. Since the first bevel gear 12 and the second bevel gear 14 mesh with each other, the second bevel gear 14 will rotate accordingly, thereby driving the threaded rod 13 to rotate. When the threaded rod 13 rotates, since the movable ring 15 is threadedly connected to the threaded rod 13 and the movable ring 15 is guided and restricted in the slide groove 301 by the guide post 16, the movable ring 15 will move linearly along the threaded rod 13. The guide post 16 and the slide groove 301 play the role of guiding and preventing the movable ring 15 from rotating. When the movable ring 15 moves linearly, the guide post 16 drives the movable tube 4 to slide on the outer ring surface of the fixed tube 3, thereby realizing the up and down movement of the movable tube 4, thereby driving the fire alarm device body 10 below to adjust its height.

[0030] After the second servo motor 18 starts, its output shaft drives the third bevel gear 19 to rotate. Because the third bevel gear 19 meshes with the fourth bevel gear 20, the fourth bevel gear 20 will rotate as well. The rotation of the fourth bevel gear 20 drives the rotating shaft 21 to rotate, and the rotating shaft 21 then drives the turntable 22 to rotate. When the turntable 22 rotates, the pressing groove 2201 at its bottom will rotate accordingly. When the turntable 22 rotates, the pressing groove 2201 exerts a pressing or releasing effect on the pressing column 23. Since the limiting rod 9 is slidably connected to the fixing block 8, the pressing column 23 will drive the limiting rod 9 to slide within the fixing block 8, thereby extending or retracting the limiting rod 9. When it is necessary to fix the bearing frame 6 and the limiting frame 7, the limiting rod 9 is extended and connected to the limiting hole 701 to achieve limiting fixation. When it is necessary to disassemble, the limiting rod 9 is retracted to release the limiting, which facilitates the installation, disassembly and maintenance of the fire alarm equipment body 10. The operation is convenient and the practicality is better.

[0031] Finally, the following points should be noted: First, in the description of this utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly, and can be mechanical connection or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0034] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A suspended fire hazard alarm device comprising a support base (1), characterised in that: The support base (1) is equipped with a base (2) at its bottom. The base (2) is equipped with a fixed tube (3) at its bottom. The fixed tube (3) is equipped with a movable tube (4) on its outer ring surface. The movable tube (4) is equipped with a mounting frame (5) at its bottom. The mounting frame (5) is equipped with a bearing frame (6) at its bottom. The bearing frame (6) is equipped with a limiting frame (7) on its outer side. The limiting frame (7) has a limiting hole (701) at one end of each of its four inner sidewalls. The bearing frame (6) has a fixing block (8) at each of its four inner top corners. The limiting block (8) has a limiting rod (9) inside it that extends to the outside of the bearing frame (6) and connects to the limiting hole (701). The limiting frame (7) has a fire alarm device body (10) at its bottom.

2. A suspended fire hazard alarm apparatus according to claim 1, wherein: A first servo motor (11) is installed on one of the outer ends of the base (2). The output shaft of the first servo motor (11) passes through the interior of the base (2) and a first bevel gear (12) is installed thereon. A threaded rod (13) is installed between the inner top of the base (2) and the inner bottom of the fixed tube (3). A second bevel gear (14) is installed on one of the top ends of the outer ring surface of the threaded rod (13). The second bevel gear (14) meshes with the first bevel gear (12).

3. A pendant fire hazard alarm apparatus according to claim 2, wherein: A movable ring (15) is threadedly connected to the outer ring surface of the threaded rod (13). Slide grooves (301) are symmetrically opened at both ends of the fixed tube (3). Guide posts (16) are installed at both ends of the movable ring (15) and inside the two slide grooves (301).

4. A pendant fire hazard alarm apparatus according to claim 3, wherein: The inner wall of the movable tube (4) is slidably connected to the outer ring surface of the fixed tube (3), and the end of the guide post (16) away from the movable ring (15) is connected to the top end of the inner wall of the movable tube (4).

5. A pendant fire hazard alarm apparatus according to claim 1, wherein: A fixing ear (17) is installed on the top of the support frame (6). A second servo motor (18) is installed on one end of the outside of the fixing ear (17). The output shaft of the second servo motor (18) passes through the fixing ear (17) and is then installed with a third bevel gear (19). A fourth bevel gear (20) is installed on the top of the support frame (6) near the third bevel gear (19). The fourth bevel gear (20) meshes with the third bevel gear (19).

6. A pendant fire hazard alarm apparatus according to claim 5, wherein: The bottom of the fourth bevel gear (20) is fitted with a rotating shaft (21) that extends through the bearing frame (6) into it. The bottom of the rotating shaft (21) is fitted with a turntable (22), and the bottom of the turntable (22) is provided with four extrusion grooves (2201) in a circular array.

7. A pendant fire hazard alarm apparatus according to claim 1, wherein: An extrusion column (23) is installed at one end of the limiting rod (9) and inside the extrusion groove (2201). The outer ring surface of the limiting rod (9) is slidably connected to the inside of the fixing block (8).

8. A pendant fire hazard alarm apparatus according to claim 7, wherein: The outer ring size of the limiting rod (9) is adapted to the inner wall size of the limiting hole (701). After the bearing frame (6) is located inside the limiting frame (7), the limiting rod (9) can be connected to the inside of the limiting hole (701).

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