Building fire alarm device

Abstract

The utility model discloses a building fire alarm device which comprises a smoke alarm, the top of the smoke alarm is fixedly connected with a conical clamping block, the top of the smoke alarm is in movable contact with a rectangular box with an opening in the bottom, and the inner wall of the top of the rectangular box is fixedly connected with a U-shaped seat. And the bottom of the U-shaped seat is fixedly connected with a conical sleeve with an opening in the bottom. According to the utility model, a series of structures are arranged, so that the smoke alarm can be automatically dropped to a low position during overhaul and maintenance, personnel do not need to climb to operate, the safety risk is reduced, personnel can directly carry out convenient and safe overhaul and maintenance work at the low position, the operation convenience and safety are improved, and the smoke alarm is convenient to disassemble, assemble and replace; and after maintenance and replacement, the smoke alarm is driven to rise and reset automatically, accurately and timely, the phenomenon that rising is not in place is prevented, convenient and safe maintenance work of maintainers is facilitated, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of fire alarm equipment, in particular to a building fire alarm device. Background Art

[0002] A fire alarm device for construction is disclosed in the Chinese utility model patent application publication number CN218630978U, including a smoke alarm housing and a fixed rod, the interior of the smoke alarm housing is rotatably connected to a reciprocating screw, the outer surface of the reciprocating screw is threadedly connected to a screw nut, one side of the screw nut is fixedly connected to a cleaning ring, the outer surface of the reciprocating screw is fixedly connected to a driven gear, and a servo motor is installed on the upper top wall of the smoke alarm housing; by arranging a shielding cover, a reciprocating screw, a screw nut, a cleaning ring, a driven gear, a servo motor, a driving gear, a dust outlet and a timing switch, the fire alarm device for construction can be adapted to dusty scenes such as construction sites, and has the function of automatically cleaning dust on the surface of the shielding cover. Long-term use will not affect the sensitivity of the sensing center, and can ensure that the fire alarm device can detect fire in time and give an alarm in time, which is extremely useful.

[0003] The above technology discloses a fire alarm device for construction, and the existing smoke alarm, which are directly fixed on the top wall of the building by bolt parts such as threaded fixing rods. Although they can perform building fire detection and alarm work, they still have the following shortcomings when used: 1. Since they are installed at a high position on the top wall, regular inspection and maintenance or damage replacement require personnel to climb up to disassemble and assemble. The safety risk of climbing operation is relatively large, which is not conducive to the convenient and safe maintenance work of maintenance personnel; improvement is needed. In view of this, a building fire alarm device is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a building fire alarm device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a building fire alarm device, comprising a smoke alarm, the top of the smoke alarm is fixedly connected with a conical clamping block, the top of the smoke alarm is movably in contact with a rectangular box with an opening at the bottom, a U-shaped seat is fixedly connected to the top inner wall of the rectangular box, the bottom of the U-shaped seat is fixedly connected with a conical sleeve with an opening at the bottom, the conical sleeve is movably clamped on the conical clamping block, the clamping of the conical sleeve and the conical clamping block is used to realize the clamping positioning and anti-swaying of the smoke alarm, and the smoke alarm is used to perform building fire warning work;

[0006] Vertical guide winding and lowering components are installed on the inner walls of both sides of the rectangular box, and the bottom end of the vertical guide winding and lowering component is fixedly connected to a detachable connecting component that is rotatably installed on the top of the smoke alarm. The same rotating shaft is fixedly connected between the two sides of the vertical guide winding and lowering components. A rotating drive component is fixedly sleeved on the rotating shaft. A brake motor with an output shaft fixedly connected to the rotating drive component is fixedly installed on the top inner wall of the rectangular box. A PLC controller electrically connected to the brake motor is fixedly installed on the top inner wall of the rectangular box. The top of the conical sleeve A limit anti-skid touch component is fixedly installed on the inner wall and is in tight contact with the top of the conical block. The limit anti-skid touch component is electrically connected to the PLC controller. The rotation drive component is used to drive the rotating shaft to rotate when the brake motor is started. The vertical guide reeling and lowering component is used to drive the smoke alarm to move up and down through the detachable connecting component when the shaft rotates. The limit anti-skid touch component is used to position the smoke alarm to prevent it from slipping and transmit a closing signal to the PLC controller when the smoke alarm rises and resets, so as to facilitate the use of the PLC controller to control the brake motor to automatically and accurately close the work.

[0007] Preferably, the vertical guide winding and lowering assembly includes a winding wheel, and the two winding wheels are rotatably installed on the inner walls on both sides of the rectangular box respectively, a pull rope is wound around the winding wheel, and vertical guide sleeves are fixedly connected to the inner walls on both sides of the rectangular box, and the vertical guide sleeves are movably sleeved on the corresponding pull ropes, and the adjacent sides of the two winding wheels are fixedly connected to the two ends of the rotating shaft respectively; when the rotating shaft rotates, it can drive the two winding wheels to rotate, and the winding wheels release or wind the corresponding pull ropes. When released, the pulling force on the smoke alarm is relaxed so that it falls to a low position by its own weight for personnel to directly carry out safety inspection and maintenance work.

[0008] Preferably, the detachable connection assembly includes an external threaded head fixedly connected to the bottom end of the corresponding pull rope, the threaded sleeve on the external threaded head is provided with an internal threaded sleeve, the internal threaded sleeve is rotatably installed on the top of the smoke alarm, and the tops of both sides of the internal threaded sleeve are fixedly connected to toggle rods; a person can separate the internal threaded sleeve from the corresponding external threaded head by rotating it, so as to facilitate the disassembly, assembly and replacement of the smoke alarm.

[0009] Preferably, the rotary drive assembly comprises a first gear fixedly sleeved on the rotating shaft, a second gear is meshed on the top of the first gear, and the right side of the second gear is fixedly connected to the left end of the output shaft of the brake motor.

[0010] Preferably, the limit anti-skid touch assembly includes a circular anti-skid rubber ring bonded and fixed to the inner wall of the top of the conical sleeve and a touch switch located on the inner side thereof, the bottom of the circular anti-skid rubber ring is in tight contact with the top of the conical block, the circular anti-skid rubber ring is in a compressed state, the touch end of the touch switch is in tight contact with the top of the conical block, and the touch switch is electrically connected to the PLC controller; when the smoke alarm moves up and resets, the conical block can be driven to squeeze the circular anti-skid rubber ring and the touch switch, and the squeezing and anti-skid effect of the circular anti-skid rubber ring and the conical block is utilized to achieve positioning and anti-rotation of the smoke alarm, and when the touch switch is touched, a closing signal is transmitted to the PLC controller, so that it controls the brake motor to automatically close, thereby achieving the effect of automatic, accurate and timely closing when rising and resetting.

[0011] Preferably, a battery is fixedly mounted on the top inner wall of the rectangular box, the brake motor and the PLC controller are electrically connected to the battery, and a wireless remote control switch is fixed and electrically connected to the front side of the brake motor.

[0012] Preferably, both top sides of the rectangular box are integrally provided with outer edges, and the bottom of the outer edges is provided with two bolt installation through holes.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This building fire alarm device can automatically drop the smoke alarm to a low position during inspection and maintenance by cooperating with the rectangular box, brake motor, rotating shaft, rotating drive assembly and vertical guide winding and lowering assembly. By automatically dropping to a low position, there is no need for personnel to climb up to operate, thereby reducing safety risks and facilitating personnel to directly perform convenient and safe inspection and maintenance work at a low position, improving the convenience and safety of operation, and being able to drive the smoke alarm to rise again after inspection and maintenance;

[0015] 2. This building fire alarm device facilitates the disassembly and replacement of the smoke alarm by providing a detachable connection component;

[0016] 3. This building fire alarm device, through the cooperation of the smoke alarm, limit anti-skid touch assembly, conical block, brake motor, conical sleeve and PLC controller, can automatically and accurately close in time when the smoke alarm rises and resets to prevent the phenomenon of not rising into place, which is conducive to the convenient and safe maintenance work of maintenance personnel and uses smoke alarms for building fire warning work.

[0017] The utility model is provided with a series of structures, which is convenient for automatically dropping the smoke alarm to a low position during inspection and maintenance, without the need for personnel to climb up to operate, reducing safety risks, and facilitating personnel to directly perform convenient and safe inspection and maintenance work at a low place, thereby improving the convenience and safety of operation, facilitating the disassembly and replacement of the smoke alarm, and facilitating automatic, accurate and timely closing when the smoke alarm is driven to rise and reset after inspection and replacement, thereby preventing the phenomenon of insufficient raising, which is conducive to convenient and safe maintenance work of inspection personnel and is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a building fire alarm device proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the main cross-sectional structure of a building fire alarm device proposed by the utility model;

[0020] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of part A in the figure.

[0021] In the figure: 1. smoke alarm; 101. conical block; 2. rectangular box; 3. U-shaped seat; 4. conical sleeve; 5. reel; 6. pull rope; 7. rotating shaft; 8. first gear; 9. second gear; 10. brake motor; 11. PLC controller; 12. external thread head; 13. internal thread sleeve; 14. vertical guide sleeve; 15. circular anti-skid rubber ring; 16. touch switch; 17. toggle lever. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 3As shown, a building fire alarm device proposed in this embodiment includes a smoke alarm 1, a conical clamping block 101 is fixedly connected to the top of the smoke alarm 1, a rectangular box 2 with an opening at the bottom is movably contacted at the top of the smoke alarm 1, a U-shaped seat 3 is fixedly connected to the top inner wall of the rectangular box 2, a conical sleeve 4 with an opening at the bottom is fixedly connected to the bottom of the U-shaped seat 3, the conical sleeve 4 is movably clamped on the conical clamping block 101, both sides of the top of the rectangular box 2 are integrally provided with outer edges, the bottom of the outer edges is provided with two bolt installation through holes, the provided bolt installation through holes are used for personnel to install and fix the rectangular box 2 on the top wall of the building through external bolts, the conical sleeve 4 and the conical clamping block 101 are clamped to realize the clamping positioning and anti-swaying of the smoke alarm 1, and the smoke alarm 1 is used to perform building fire warning work;

[0024] Vertical guide winding and lowering components are installed on the inner walls of both sides of the rectangular box 2, and the bottom end of the vertical guide winding and lowering component is fixedly connected to a detachable connecting component that is rotatably installed on the top of the smoke alarm 1, and the same rotating shaft 7 is fixedly connected between the two adjacent sides of the vertical guide winding and lowering components, and a rotating drive component is fixedly sleeved on the rotating shaft 7, and a brake motor 10 whose output shaft is fixedly connected to the rotating drive component is fixedly installed on the top inner wall of the rectangular box 2, and a PLC controller 11 electrically connected to the brake motor 10 is fixedly installed on the top inner wall of the rectangular box 2, and a limit anti-skid touch component that is in tight contact with the top of the conical block 101 is fixedly installed on the top inner wall of the conical sleeve 4, and the limit anti-skid touch component is electrically connected to the PLC controller 11, and the rectangular box 2 is fixedly installed on the top inner wall. There is a battery, and the brake motor 10 and the PLC controller 11 are electrically connected to the battery, which plays the effect of powering the brake motor 10 and the PLC controller 11. A wireless remote control switch is fixed and electrically connected to the front side of the brake motor 10, wherein the wireless remote control switch is matched with an external remote control to facilitate personnel to remotely control the brake motor 10. The rotary drive component is used to drive the rotating shaft 7 to rotate when the brake motor 10 is started, and the vertical guide winding and lowering component is used to drive the smoke alarm 1 to move up and down through the detachable connecting component when the rotating shaft 7 rotates. The limit anti-skid touch component is used to position the smoke alarm 1 to prevent it from slipping and transmit the closing signal to the PLC controller 11 when the smoke alarm 1 rises and resets, so as to facilitate the use of the PLC controller 11 to control the brake motor 10 to automatically and accurately close the work.

[0025] The two ends of the two winding wheels 5 are fixedly connected to the two ends of the rotating shaft 7.

[0026] Furthermore, the detachable connection component includes an external threaded head 12 fixedly connected to the bottom end of the corresponding pull rope 6, and an internal threaded sleeve 13 is provided on the threaded sleeve of the external threaded head 12. The internal threaded sleeve 13 is rotatably installed on the top of the smoke alarm 1, wherein two second bearings are fixedly connected to the top of the smoke alarm 1, and the inner ring of the second bearing is fixedly sleeved with the outer side of the corresponding internal threaded sleeve 13, which has the effect of rotatably installing the internal threaded sleeve 13, and the top of both sides of the internal threaded sleeve 13 are fixedly connected with a toggle rod 17; the external threaded head 12, the internal threaded sleeve 13 and the toggle rod 17 are arranged to cooperate, and a person can rotate the internal threaded sleeve 13 to separate it from the corresponding external threaded head 12, thereby facilitating the disassembly, assembly and replacement of the smoke alarm 1.

[0027] Furthermore, the rotation drive assembly includes a first gear 8 fixedly mounted on the rotating shaft 7, a second gear 9 meshing with the top of the first gear 8, and the right side of the second gear 9 is fixedly connected to the left end of the output shaft of the brake motor 10; the second gear 9 cooperates with the first gear 8, and the brake motor 10 is used to drive the second gear 9 to rotate, and the second gear 9 drives the rotating shaft 7 to rotate through the first gear 8 meshing with it.

[0028] Furthermore, the limit anti-skid touch assembly includes a circular anti-skid rubber ring 15 bonded and fixed to the inner wall of the top of the conical sleeve 4 and a light touch switch 16 located inside the circular anti-skid rubber ring 15. The bottom of the circular anti-skid rubber ring 15 is tightly contacted with the top of the conical block 101. The circular anti-skid rubber ring 15 is in a compressed state. The touch end of the light touch switch 16 is tightly contacted with the top of the conical block 101. The light touch switch 16 is electrically connected to the PLC controller 11. The circular anti-skid rubber ring 15 and With the cooperation of the touch switch 16, the conical clamping block 101 can be driven to squeeze the circular anti-skid rubber ring 15 and the touch switch 16 when the smoke alarm 1 moves up to reset. The anti-skid effect of the circular anti-skid rubber ring 15 and the conical clamping block 101 can be used to position and prevent the smoke alarm 1 from rotating. When the touch switch 16 is touched, a closing signal is transmitted to the PLC controller 11, so that the brake motor 10 is automatically closed, thereby achieving the effect of automatic, accurate and timely closing when rising and resetting.

[0029] The method of using this embodiment is as follows: the rectangular box 2 is pre-installed and fixed on the top wall of the building by using external bolts and bolt installation holes, and the smoke alarm 1 is used for building fire warning. When it needs to be repaired and maintained later, the brake motor 10 is controlled by the external remote control to start forward, and the brake motor 10 drives the second gear 9 to rotate. The second gear 9 drives the rotating shaft 7 to rotate through the first gear 8 meshing with it, and the rotating shaft 7 drives the two winding wheels 5 to rotate forward. The winding wheels 5 release the corresponding pull ropes 6 and relax the tension on the smoke alarm 1. At this time, under the action of its own gravity, the smoke alarm 1 drives the two pull ropes 6 to slide downward in the corresponding vertical guide sleeves 14 respectively, and the smoke alarm 1 drives the conical block 101 to separate from the conical sleeve 4. As it moves downward, the smoke alarm 1 gradually falls to a low position, so that it is convenient to automatically drop the smoke alarm 1 to a low position during repair and maintenance, without the need for personnel to climb up to operate, reducing safety risks, and facilitating personnel to directly perform convenient and safe repair and maintenance work at a low place, thereby improving operational convenience and safety.

[0030] When disassembly and replacement is required, the personnel rotate the internal thread sleeve 13 in the reverse direction to separate it from the corresponding external thread head 12, and release the connection, so that the smoke alarm 1 can be replaced. When installing, the two internal thread sleeves 13 on the new smoke alarm 1 are respectively screwed on the corresponding external thread heads 12 in the forward direction, and then the brake motor 10 is started in the reverse direction. Similarly, the movement direction of the brake motor 10 is completely opposite to that of the forward start. At this time, the winding wheel 5 changes to reverse rotation and reels the corresponding pull rope 6. The two reeled pull ropes 6 drive the smoke alarm 1 through the two external thread heads 12 and the two internal thread sleeves 13 in turn. When the smoke alarm 1 is lifted up, the smoke alarm 1 drives the conical clamping block 101 to clamp upward into the conical sleeve 4. The conical clamping block 101 squeezes the circular anti-skid rubber ring 15 and the touch switch 16 upward. After the circular anti-skid rubber ring 15 is compressed, it generates a squeezing friction force with the conical clamping block 101. This friction force can prevent the smoke alarm 1 from rotating during use. When the touch switch 16 is squeezed and touched, it transmits a closing signal to the PLC controller 11. The PLC controller 11 controls the brake motor 10 to automatically close, so as to achieve the effect of automatic, accurate and timely closing when returning to the starting position, and prevent the phenomenon of not being lifted to the starting position.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. 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 building fire alarm device, comprising a smoke alarm (1), characterized in that: The top of the smoke alarm (1) is fixedly connected to a conical clamping block (101), the top of the smoke alarm (1) is movably in contact with a rectangular box (2) with an opening at the bottom, a U-shaped seat (3) is fixedly connected to the inner wall of the top of the rectangular box (2), the bottom of the U-shaped seat (3) is fixedly connected to a conical sleeve (4) with an opening at the bottom, and the conical sleeve (4) is movably clamped on the conical clamping block (101); Vertical guide winding and lowering components are installed on both inner walls of the rectangular box (2), the bottom end of the vertical guide winding and lowering components is fixedly connected to a detachable connecting component that is rotatably installed on the top of the smoke alarm (1), the two sides of the two vertical guide winding and lowering components are fixedly connected to the same rotating shaft (7), and a rotating drive component is fixedly sleeved on the rotating shaft (7), a brake motor (10) whose output shaft is fixedly connected to the rotating drive component is fixedly installed on the top inner wall of the rectangular box (2), a PLC controller (11) electrically connected to the brake motor (10) is fixedly installed on the top inner wall of the rectangular box (2), and a limit anti-slip touch component that is in tight contact with the top of the conical block (101) is fixedly installed on the top inner wall of the conical sleeve (4), and the limit anti-slip touch component is electrically connected to the PLC controller (11).

2. A building fire alarm device according to claim 1, characterized in that: The vertical guide winding and lowering assembly comprises a winding wheel (5), wherein the two winding wheels (5) are rotatably mounted on the inner walls on both sides of the rectangular box (2), a pull rope (6) is wound around the winding wheel (5), and vertical guide sleeves (14) are fixedly connected to the inner walls on both sides of the rectangular box (2), and the vertical guide sleeves (14) are movably mounted on the corresponding pull ropes (6), and the adjacent sides of the two winding wheels (5) are fixedly connected to the two ends of the rotating shaft (7).

3. A building fire alarm device according to claim 2, characterized in that: The detachable connection assembly comprises an external threaded head (12) fixedly connected to the bottom end of the corresponding pull rope (6), an internal threaded sleeve (13) is provided on the threaded sleeve of the external threaded head (12), the internal threaded sleeve (13) is rotatably mounted on the top of the smoke alarm (1), and the tops of both sides of the internal threaded sleeve (13) are fixedly connected to toggle rods (17).

4. A building fire alarm device according to claim 3, characterized in that: The rotary drive assembly comprises a first gear (8) fixedly sleeved on a rotating shaft (7), a second gear (9) meshing with the top of the first gear (8), and a right side of the second gear (9) fixedly connected to the left end of the output shaft of the brake motor (10).

5. A building fire alarm device according to claim 4, characterized in that: The position-limiting anti-skid touch assembly comprises a circular anti-skid rubber ring (15) bonded and fixed on the inner wall of the top of the conical sleeve (4) and a light touch switch (16) located inside the circular anti-skid rubber ring (15), the bottom of the circular anti-skid rubber ring (15) is in tight contact with the top of the conical clamping block (101), the circular anti-skid rubber ring (15) is in a compressed state, the touch end of the light touch switch (16) is in tight contact with the top of the conical clamping block (101), and the light touch switch (16) is electrically connected to the PLC controller (11).

6. A building fire alarm device according to claim 1, characterized in that: A storage battery is fixedly mounted on the top inner wall of the rectangular box (2); the brake motor (10) and the PLC controller (11) are both electrically connected to the storage battery; and a wireless remote control switch is fixed and electrically connected to the front side of the brake motor (10).

7. A building fire alarm device according to claim 1, characterized in that: The tops of both sides of the rectangular box (2) are integrally provided with outer edges, and the bottom of the outer edges is provided with two bolt installation through holes.

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