Calibration and maintenance tool for fire alarm system

Abstract

The utility model relates to fire-fighting maintenance, in particular to a fire-fighting alarm system calibration and maintenance tool which comprises a moving mechanism, a lifting mechanism is installed on the upper surface of the moving mechanism, a blocking cover is placed at the top end of the lifting mechanism, and a fire-fighting alarm system is arranged above the blocking cover. A control mechanism is welded to the upper middle position of the front side surface of the moving mechanism. The moving mechanism comprises a lower-layer moving platform, four universal wheels installed at the four corners of the lower surface of the lower-layer moving platform, four vertical supporting columns welded to the four corners of the upper surface of the lower-layer moving platform, and an upper-layer moving platform welded to the top ends of the vertical supporting columns. According to the utility model, the fire alarm system placed at the working position can be conveniently calibrated and maintained without being disassembled, whether the fire alarm system works normally and how the accuracy is convenient and rapid to know, the fire alarm system is disassembled after problems exist, and the labor capacity of workers can be reduced.

Description

Technical Field

[0001] This utility model relates to fire protection maintenance, specifically a calibration and maintenance tool for fire alarm systems. Background Technology

[0002] Intelligent fire alarm systems feature automatic alarm functions at the initial stage of a fire, and include a telephone directly connecting to the fire department, an automatic fire extinguishing control cabinet, and a fire alarm broadcast system attached to the alarm unit in the fire control center. The most common type of intelligent fire alarm system is the fire alarm itself. Existing fire alarms detect discrete light sources, tiny smoke particles, and aerosols through an internal intelligent processor. Once smoke is detected, an alarm sound is immediately output through a built-in dedicated IC driver circuit and an external piezoelectric transducer, allowing people to be informed of the fire early and extinguish it in its early stages.

[0003] Utility model patent CN217213869U discloses an intelligent fire alarm system. This utility model includes a mounting plate with a single fixing sleeve fixedly connected to the center of its bottom. The fixing sleeve has a threaded groove at its bottom, and a threaded rod is threaded to the bottom of the inner wall of the groove. A fire alarm body is fixedly connected to the bottom of the threaded rod, and a rubber stopper is fixedly connected to the top of the threaded rod. The outer wall of the rubber stopper is threaded. This application allows for quick assembly and disassembly of the fire alarm body from the mounting plate by screwing the threaded rod into or out of the single fixing sleeve. This facilitates subsequent maintenance and repair of the fire alarm body. The assembly and disassembly process does not require tools to rotate multiple bolts, saving time and effort. Furthermore, rotating the threaded rod causes the fire alarm body to rise and fall, allowing users to adjust the installation height according to their needs. Overall, it is convenient, practical, and suitable for widespread adoption.

[0004] While the aforementioned utility model facilitates the disassembly and assembly of fire alarm systems, before disassembly for maintenance, calibration and maintenance tools are typically used to check and calibrate the system's operational status and sensitivity. Calibration and maintenance usually require testing and calibrating the smoke and heat detectors. This testing often uses smoke generators and hot air blowers to simulate temperature and smoke concentration in a fire environment. However, the large size of these devices makes them inconvenient to move to the testing location, hindering the calibration and maintenance process. Therefore, we propose a fire alarm system calibration and maintenance tool. Utility Model Content

[0005] This utility model provides a calibration and maintenance tool for fire alarm systems to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fire alarm system calibration and maintenance tool includes a moving mechanism, a lifting mechanism installed on the upper surface of the moving mechanism, a blocking cover placed at the top of the lifting mechanism, a fire alarm system installed above the blocking cover, and a control mechanism welded to the upper middle position of the front surface of the moving mechanism.

[0008] The moving mechanism includes a lower moving platform, four casters installed at the four corners of the lower surface of the lower moving platform, four vertical support columns welded to the four corners of the upper surface of the lower moving platform, and an upper moving platform welded to the top of the vertical support columns. A hot air blower is installed on one side of the upper surface of the lower moving platform, and a smoke generator is installed on the other side of the upper surface of the lower moving platform. Mounting holes are provided at the middle positions of the left and right sides of the upper surface of the lower moving platform.

[0009] As a preferred technical solution, a through hole is provided in the middle of the upper surface of the upper moving platform, lifting holes are provided in the middle of the left and right sides of the upper surface of the upper moving platform, and limit holes are provided at the four corners of the upper surface of the upper moving platform.

[0010] As a preferred technical solution, the lifting mechanism includes a lifting platform, two threaded rods welded to the left and right sides of the middle position of the lower surface of the lifting platform, and four limiting rods welded to the four corners of the lower surface of the lifting platform. A pipe groove is opened in the middle position of the upper surface of the lifting platform, and limiting rings are welded around the upper surface of the lifting platform. A rotating rod is threadedly connected to the outer surface of each threaded rod, and a motor for controlling the rotation of the rotating rod is installed at the lower end of each rotating rod. The motor is fixedly installed on the lower side of the mounting hole opened on the lower moving platform, and the rotating rod passes through the mounting hole and is coaxially connected to the output shaft of the motor.

[0011] As a preferred technical solution, a smoke inlet channel is installed at the middle position of the lower surface of the baffle, and an air inlet channel is installed at the middle position of the right side surface of the baffle. The smoke inlet channel is connected to the smoke outlet of the smoke generator through a smoke inlet pipe, and the air inlet channel is connected to the air outlet of the hot air blower through an air inlet pipe. The smoke inlet pipe passes through the through hole and the pipe groove.

[0012] As a preferred technical solution, the control mechanism includes an extension rod welded to the upper middle position of the side surface of the two vertical support columns on the same side, a control handle welded between the two extension rods, and an auxiliary block welded to the middle position of the control handle. The control panel is fixedly installed on the upper surface of the auxiliary block.

[0013] As a preferred technical solution, the universal wheel is equipped with a brake assembly, the overall height of the moving mechanism is 1 to 3 meters, the height of the control mechanism above the ground is 0.6 to 2 meters, the length of the threaded rod is 1.5 to 3 meters, the length of the rotating rod is 0.8 to 2.8 meters, and the length of the limiting rod is 1.5 to 3 meters.

[0014] As a preferred technical solution, the positions and numbers of the limiting rods and the limiting holes correspond one-to-one, and the upper surface dimension of the lifting platform is equal to the lower surface dimension of the blocking cover.

[0015] As a preferred technical solution, the control panel is electrically connected to the motor, the smoke generator and the hot air blower, and the upper surface of the barrier is padded with rubber pads around its perimeter. The barrier is made of transparent PVC plastic.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. It allows for convenient calibration and maintenance of fire alarm systems placed in the work location without disassembly, enabling quick understanding of whether the fire alarm system is working properly and its accuracy. Problems can be identified before disassembling the fire alarm system, reducing the workload of staff.

[0018] 2. The calibration work can be carried out semi-automatically by the equipment. The staff can control the motor, smoke generator and hot air blower through the control panel, which is simple and convenient to operate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the moving mechanism in this utility model;

[0021] Figure 3 This is a schematic diagram of the upper-level mobile platform in this utility model;

[0022] Figure 4 This is a schematic diagram of the lifting mechanism in this utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the barrier in this utility model;

[0024] Figure 6 This is a schematic diagram of the control mechanism in this utility model;

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. Moving mechanism; 11. Lower moving platform; 12. Casters; 13. Mounting holes; 14. Smoke generator; 15. Upper moving platform; 151. Through hole; 152. Lifting hole; 153. Limiting hole; 16. Hot air blower; 17. Vertical support column;

[0027] 2. Lifting mechanism; 21. Lifting platform; 22. Pipeline trench; 23. Limit ring; 24. Limit rod; 25. Threaded rod; 26. Rotating rod; 27. Motor;

[0028] 3. Baffle; 31. Air inlet duct; 32. Smoke inlet duct;

[0029] 4. Fire alarm system;

[0030] 5. Control mechanism; 51. Extension rod; 52. Control handle; 53. Auxiliary block; 54. Control panel. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-6 This embodiment provides a technical solution:

[0033] The fire alarm system calibration and maintenance tool includes a moving mechanism 1, a lifting mechanism 2 installed on the upper surface of the moving mechanism 1, a blocking cover 3 placed on the top of the lifting mechanism 2, a fire alarm system 4 installed above the blocking cover 3, and a control mechanism 5 welded to the upper middle position of the front surface of the moving mechanism 1.

[0034] like Figure 2 As shown, the moving mechanism 1 includes a lower moving platform 11, four casters 12 installed at the four corners of the lower surface of the lower moving platform 11, four vertical support columns 17 welded to the four corners of the upper surface of the lower moving platform 11, and an upper moving platform 15 welded to the top of the vertical support columns 17. A hot air blower 16 is installed on one side of the upper surface of the lower moving platform 11, and a smoke generator 14 is installed on the other side of the upper surface of the lower moving platform 11. Mounting holes 13 are opened in the middle of the left and right sides of the upper surface of the lower moving platform 11. Through the above mechanism, the existing installed fire alarm system 4 can be easily calibrated and maintained, and the normal operation of the fire alarm system 4 can be quickly detected, reducing the workload of the staff.

[0035] It should be added that the control panel 54 can set the smoke concentration of the smoke generator 14, the air temperature of the hot air blower 16, and control the simultaneous start or stop of the two motors 27.

[0036] Furthermore, such as Figure 3 As shown, a through hole 151 is provided in the middle of the upper surface of the upper moving platform 15, lifting holes 152 are provided in the middle of the left and right sides of the upper surface of the upper moving platform 15, and limit holes 153 are provided at the four corners of the upper surface of the upper moving platform 15.

[0037] Furthermore, such as Figure 4 As shown, the lifting mechanism 2 includes a lifting platform 21, two threaded rods 25 welded to the left and right sides of the middle position of the lower surface of the lifting platform 21, and four limiting rods 24 welded to the four corners of the lower surface of the lifting platform 21. A pipe groove 22 is opened in the middle position of the upper surface of the lifting platform 21, and limiting rings 23 are welded around the upper surface of the lifting platform 21. A rotating rod 26 is threadedly connected to the outer surface of each threaded rod 25. A motor 27 for controlling the rotation of the rotating rod 26 is installed at the lower end of each rotating rod 26. 27 is fixedly installed on the lower side of the mounting hole 13 opened on the lower moving platform 11. The rotating rod 26 passes through the mounting hole 13 and is coaxially connected to the output shaft of the motor 27. The universal wheel 12 is equipped with a brake assembly, which can control the moving mechanism 1 to be fixed in place. The overall height of the moving mechanism 1 is 1 meter to 3 meters. The height of the control mechanism 5 from the ground is 0.6 meters to 2 meters. The length of the threaded rod 25 is 1.5 meters to 3 meters. The length of the rotating rod 26 is 0.8 meters to 2.8 meters. The length of the limit rod 24 is 1.5 meters to 3 meters.

[0038] It should be added that the typical floor height of residential buildings is about 2.8 to 3 meters. When this device is applied to a regular single-story building, the heights of the various components can be selected as follows: the overall height of the moving mechanism 1 is 1.5 meters, the height of the control mechanism 5 is 1 meter above the ground, the length of the threaded rod 25 is 1.6 meters, the length of the rotating rod 26 is 1.2 meters, and the length of the limit rod 24 is 1.6 meters. The height of the moving mechanism 1 plus the height of the threaded rod 25 equals 3.1 meters, which is greater than 3 meters. At this height, the device can easily calibrate and maintain a fire alarm system 4 installed at a height of 3 meters on the ceiling of a residential building. However, when it is necessary to detect the typical floor height of an office building with a floor height of 4 to 6 meters, the height of the moving mechanism 1 is selected to be 3 meters, the height of the threaded rod 25 is selected to be 3 meters, and the combined height of the two is 6 meters. At this time, the control mechanism 5 is 1.5 meters above the ground, the length of the rotating rod 26 is selected to be 2.8 meters, and the length of the limit rod 24 is selected to be 3 meters, which can cover the office building floor.

[0039] In this embodiment, as Figure 5As shown, a smoke inlet channel 32 is installed in the middle of the lower surface of the baffle 3, and an air inlet channel 31 is installed in the middle of the right side surface of the baffle 3. The smoke inlet channel 32 is connected to the smoke outlet of the smoke generator 14 through a smoke inlet pipe, and the air inlet channel 31 is connected to the air outlet of the hot air blower 16 through an air inlet pipe. The smoke inlet pipe passes through the through hole 151 and the pipe groove 22, and the generated hot air and smoke are transported to the inside of the baffle 3 through the pipe for maintenance of the fire alarm system 4 located inside the baffle 3. The pipe and the channel are connected by a threaded seal.

[0040] In this embodiment, as Figure 6 As shown, the control mechanism 5 includes an extension rod 51 welded to the upper middle position of the side surface of two vertical support columns 17 on the same side, a control handle 52 welded between the two extension rods 51, and an auxiliary block 53 welded to the middle position of the control handle 52. A control panel 54 is fixedly installed on the upper surface of the auxiliary block 53. The control handle 52 has a circular cross-section. The control panel 54 is electrically connected to the motor 27, the smoke generator 14, and the hot air blower 16. Rubber pads are placed around the upper surface of the shield 3 to reduce the damage to the ceiling caused by the shield 3 moving upward and hitting the ceiling. It can also increase the sealing performance of the shield 3 after it is attached to the ceiling. The shield 3 is made of transparent PVC plastic, which has poor sound insulation effect and will not affect the alarm sound of the fire alarm system 4. The transparent plastic will not block the light prompt when the fire alarm system 4 sounds an alarm.

[0041] In this embodiment, as Figure 1 As shown, the positions and numbers of the limiting rods 24 and the limiting holes 153 correspond one-to-one. The limiting rods 24 assist the lifting platform 21 in lifting and lowering. The upper surface size of the lifting platform 21 is equal to the lower surface size of the blocking cover 3. The blocking cover 3 located on the upper surface of the lifting platform 21 can be restricted by the limiting ring 23 to prevent it from shaking.

[0042] It is worth noting that the structure and working principle of the smoke generator 14, hot air blower 16, motor 27, and control panel 54 involved in this embodiment are as known to those skilled in the art, and will not be described in detail here.

[0043] In the specific use of the fire alarm system calibration and maintenance tool in this embodiment, first, hold the control handle 52 and push the entire device to the underside of the fire alarm system 4 to be tested. Fix the casters 12 by the brake assembly. Then, operate the control panel 54 to control the two motors 27 to rotate forward at the same time, which drives the rotating rod 26 to rotate forward. This causes the threaded rod 25, which is rotatably connected to the rotating rod 26, to move upward and lift the lifting platform 21 welded to the top of the threaded rod 25 until the upper end of the barrier cover 3 contacts the ceiling around the fire alarm system 4, thus enclosing the fire alarm system 4 entirely inside the barrier cover 3. Then, turn off the two motors 27.

[0044] The fire alarm system 4 was then tested to ensure it functioned correctly. The test required the system to trigger an alarm when the smoke concentration and temperature exceeded the set alarm thresholds. During the test, staff observed whether the system could trigger the alarm at the specified smoke concentration and temperature. First, the smoke concentration generated by the smoke generator 14 was set via the control panel 54, and the smoke detectors of the fire alarm system 4 were calibrated. Next, after the smoke detectors were tested, the smoke generator 14 was turned off via the control panel 54, and the hot air blower 16 was started. The temperature of the hot air blower 16 was then determined, and the temperature detectors of the fire alarm system 4 were calibrated. The sequential starting of the smoke generator 14 and the hot air blower 16 simulated a real fire scenario. After the test, the smoke generator 14 and the hot air blower 16 were turned off via the control panel 54, and the two motors 27 were reversed, causing the lifting platform 21 to descend until it returned to its original position. The motors 27 were then turned off, completing the test of the fire alarm system 4.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Fire alarm system calibration maintenance tool comprising a mobile mechanism (1), characterized in that: The mobile mechanism (1) upper surface is provided with lifting mechanism (2), the lifting mechanism (2) top end is placed with blocking cover (3), the blocking cover (3) top is provided with fire alarm system (4), the mobile mechanism (1) front side surface middle position is welded with control mechanism (5); The mobile mechanism (1) includes a lower moving platform (11), four universal wheels (12) installed at the four corner positions of the lower surface of the lower moving platform (11), four vertical support columns (17) welded at the four corner positions of the upper surface of the lower moving platform (11), and an upper moving platform (15) welded at the top end of the vertical support column (17). The upper surface of the lower moving platform (11) is provided with a hot air blower (16) on one side, and a smoke generator (14) on the other side. The upper surface of the lower moving platform (11) is provided with mounting holes (13) at the middle positions of the left and right sides.

2. The fire alarm system calibration maintenance tool of claim 1, wherein: The upper surface of the upper moving platform (15) is provided with a through hole (151) at the middle position, and lifting holes (152) are formed at the middle positions of the left and right sides of the upper surface of the upper moving platform (15). Limiting holes (153) are formed at the four corner positions of the upper surface of the upper moving platform (15).

3. The fire alarm system calibration maintenance tool of claim 2, wherein: The lifting mechanism (2) includes a lifting platform (21), two threaded rods (25) welded at the middle positions of the left and right sides of the lower surface of the lifting platform (21), and four limiting rods (24) welded at the four corner positions of the lower surface of the lifting platform (21). The upper surface of the lifting platform (21) is provided with a pipeline groove (22) at the middle position, and a limiting ring (23) is welded around the upper surface of the lifting platform (21). Each threaded rod (25) is threadedly connected with a rotating rod (26) on the outer surface. Each rotating rod (26) is provided with a motor (27) for controlling the rotation of the rotating rod (26) at the lower end. The motor (27) is fixedly installed below the mounting hole (13) formed in the lower moving platform (11). The rotating rod (26) is coaxially connected with the output shaft of the motor (27) through the mounting hole (13).

4. The fire alarm system calibration maintenance tool of claim 3, wherein: The lower surface of the blocking cover (3) is provided with a smoke inlet channel (32) at the middle position, and the right side surface of the blocking cover (3) is provided with an air inlet channel (31) at the middle position. The smoke inlet channel (32) is connected with the smoke outlet of the smoke generator (14) through a smoke inlet pipeline. The air inlet channel (31) is connected with the air outlet of the hot air blower (16) through an air inlet pipeline. The smoke inlet pipeline passes through the through hole (151) and the pipeline groove (22).

5. The fire alarm system calibration maintenance tool of claim 4, wherein: The control mechanism (5) includes an extension rod (51) welded at the middle position of the side surface of the two vertical support columns (17) on the same side, a control handle (52) welded between the two extension rods (51), and an auxiliary block (53) welded at the middle position of the control handle (52). The upper surface of the auxiliary block (53) is fixedly provided with a control panel (54).

6. The fire alarm system calibration maintenance tool of claim 5, wherein: The universal wheel (12) is provided with a brake assembly, the overall height of the moving mechanism (1) is 1-3 meters, the height of the control mechanism (5) from the ground is 0.6-2 meters, the length of the threaded rod (25) is 1.5-3 meters, the length of the rotating rod (26) is 0.8-2.8 meters, and the length of the limiting rod (24) is 1.5-3 meters.

7. The fire alarm system calibration maintenance tool of claim 5, wherein: The limiting rod (24) and the limiting hole (153) are one-to-one corresponding in position, and the upper surface size of the lifting platform (21) is equal to the lower surface size of the blocking cover (3).

8. The fire alarm system calibration maintenance tool of claim 5, wherein: The control panel (54) is electrically connected with the motor (27), the smoke generator (14) and the hot air machine (16), rubber pads are arranged around the upper surface of the blocking cover (3), and the blocking cover (3) is made of transparent PVC plastic.

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