Fire alarm device for building cable trench

Abstract

The utility model relates to the technical field of fire safety, and particularly discloses a building cable trench fire alarm device which comprises a movable seat, a detection head, clamping frames and a support, the detection head is fixedly arranged on the movable seat, and the clamping frames are arranged on the upper side and the lower side of the movable seat respectively; the whole support is of a strip-shaped structure, and one side of the support is attached to the inner wall of the cable trench. A limiting frame is arranged on the side, back on to the inner wall of the cable trench, of the support, and the limiting frame is connected with the clamping frame in a clamped mode. The whole detection head is of a cylindrical structure, an air inlet is formed in the cylindrical end face of the detection head, and an air outlet is formed in the circumferential face of the detection head. An air exhaust fan, a smoke sensor and an infrared temperature measurement sensor are arranged in the detection head, a controller and a buzzer are arranged in the movable seat, and the air exhaust fan, the smoke sensor, the infrared temperature measurement sensor and the buzzer are all electrically connected with the controller; and the monitoring range can be expanded by moving in the cable trench.

Description

Technical Field

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

[0002] A cable trench is an underground structure used to lay and protect power or communication cables. The main function of a cable trench is to protect cables from external impact, overheating, corrosion and other hazards, while facilitating the laying and maintenance of cables. Cable trenches are generally made of concrete or brick structures, and a large number of cables are usually laid in the cable trenches. When an unexpected fault occurs, such as a short circuit, the cables in the cable trench will heat up and catch fire. In addition, the outer wall of the cable is made of plastic, which has low flame retardant properties. Especially when multiple layers of cables or cross cables are laid, three-dimensional combustion will occur, and the fire will be difficult to control. The losses caused cannot be estimated. Therefore, it is very important to take fire prevention measures such as early fire alarm in cable trenches. At present, the alarm of fire in cable trenches mainly relies on fire monitoring alarms for monitoring.

[0003] Fire monitoring alarms are fixedly installed in cable trenches and can monitor conditions within a certain area; however, since the cable communication grid is relatively large, fixed fire monitoring alarms are difficult to provide comprehensive monitoring, and there is still a risk of fires occurring without being detected. Utility Model Content

[0004] The utility model aims to provide a building cable trench 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 cable trench fire alarm device, comprising a movable seat, a detection head, a bracket and a support, the detection head is fixedly arranged on the movable seat, and the upper and lower sides of the movable seat are respectively provided with brackets; the support is in a strip-shaped structure as a whole, and one side of the bracket is arranged close to the inner wall of the cable trench; a limit frame is arranged on the side of the bracket facing away from the inner wall of the cable trench, and the limit frame and the bracket are mutually clamped; the detection head is in a cylindrical structure as a whole, an air inlet is arranged on the cylindrical end face of the detection head, and an air outlet is arranged on the circumferential surface of the detection head; an exhaust fan, a smoke sensor, and an infrared temperature sensor are arranged inside the detection head, a controller and a buzzer are arranged inside the movable seat, and the exhaust fan, smoke sensor, infrared temperature sensor, and buzzer are all electrically connected to the controller; a movable frame is arranged on the side of the movable seat facing away from the detection head, and the movable frame is mutually supported by the bracket through rollers.

[0006] Preferably, fixing holes are provided at the upper and lower side edges of the bracket, and the fixing holes are waist-shaped through holes, and multiple groups of the fixing holes are evenly arranged.

[0007] Preferably, the cross-section of the limit frame is set to an L-shaped structure, and the limit frame is symmetrically arranged in two groups, and the L-shaped structure of the limit frame is folded outward; a corresponding card slot is arranged on the card frame, and the card slot and the limit frame are clamped with each other; the slot wall and the slot bottom of the card slot are inlaid with balls, and the balls are evenly arranged in multiple groups.

[0008] Preferably, the upper and lower sides of the movable seat are both provided with screw barrels, and the screw barrel is driven by a servo motor embedded in the movable seat; the bracket is provided with a screw rod, and the screw rod is correspondingly plugged into the screw barrel; the servo motor is electrically connected to the controller.

[0009] Preferably, an adjustment slot is provided on the side of the movable seat facing away from the detection head, and the movable frame is cooperatively arranged in the adjustment slot; an electric push rod is provided in the adjustment slot, and the movable frame is connected to the electric push rod; and the electric push rod is electrically connected to the controller.

[0010] Preferably, a mounting frame is provided on the mobile frame, and both ends of the roller are connected to the mounting frame through a rotating shaft and driven by a driving motor embedded in the mounting frame; an anti-slip sleeve is provided on the surface of the roller, and the driving motor is electrically connected to the controller.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention combines a movable seat with the detection head, and the movable seat can move along the bracket, thereby increasing the monitoring range of the detection head and further improving the monitoring effect; the overall structure of the device is simple, the design is reasonable, and it is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the mobile frame of the utility model;

[0014] Numbers in the figure: 1. Moving seat; 11. Screw barrel; 12. Adjusting slot; 2. Detection head; 21. Air inlet; 22. Air outlet; 3. Bracket; 31. Slot; 32. Ball; 33. Screw; 4. Bracket; 41. Limiting bracket; 42. Fixing hole; 5. Moving bracket; 51. Mounting bracket; 52. Roller; 53. Anti-slip sleeve. DETAILED DESCRIPTION

[0015] 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.

[0016] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1-2 The utility model provides a technical solution: a building cable trench fire alarm device, comprising a mobile seat 1, a detection head 2, a bracket 3 and a support 4, wherein the detection head 2 is fixedly arranged on the mobile seat 1, and the upper and lower sides of the mobile seat 1 are respectively provided with brackets 3; the bracket 4 is in a strip-shaped structure as a whole, and one side of the bracket 4 is arranged close to the inner wall of the cable trench; a limiting bracket 41 is arranged on the side of the bracket 4 facing away from the inner wall of the cable trench, and the limiting bracket 41 is mutually clamped with the bracket 3; the detection head 2 is in a cylindrical structure as a whole The structure is as follows: an air inlet 21 is arranged on the cylindrical end face of the detection head 2, and an air outlet 22 is arranged on the circumferential surface of the detection head 2; an exhaust fan, a smoke sensor, and an infrared temperature sensor are arranged inside the detection head 2, and a controller and a buzzer are arranged inside the moving base 1, and the exhaust fan, smoke sensor, infrared temperature sensor, and buzzer are all electrically connected to the controller; a moving frame 5 is arranged on the side of the moving base 1 facing away from the detection head 2, and the moving frame 5 is supported against the bracket 4 through a roller 52.

[0019] Furthermore, fixing holes 42 are provided at the upper and lower side edges of the bracket 4. The fixing holes 42 are waist-shaped through holes, and multiple groups of the fixing holes 42 are evenly provided.

[0020] Furthermore, the cross-section of the limit frame 41 is set to an L-shaped structure, and the limit frame 41 is symmetrically arranged in two groups, and the L-shaped structure of the limit frame 41 is folded outward; a corresponding card slot 31 is arranged on the card frame 3, and the card slot 31 and the limit frame 41 are clamped with each other; the groove wall and the groove bottom of the card slot 31 are inlaid with balls 32, and the balls 32 are evenly arranged in multiple groups.

[0021] Furthermore, the upper and lower sides of the movable seat 1 are both provided with screw barrels 11, and the screw barrel 11 is driven by a servo motor embedded in the movable seat 1; the bracket 3 is provided with a screw rod 33, and the screw rod 33 is correspondingly plugged into the screw barrel 11; the servo motor is electrically connected to the controller.

[0022] Furthermore, an adjustment slot 12 is provided on the side of the movable seat 1 facing away from the detection head 2, and the movable frame 5 is cooperatively arranged in the adjustment slot 12; an electric push rod is provided in the adjustment slot 12, and the movable frame 5 is connected to the electric push rod; the electric push rod is electrically connected to the controller.

[0023] Furthermore, a mounting frame 51 is provided on the mobile frame 5, and both ends of the roller 52 are connected to the mounting frame 51 through a rotating shaft and driven by a driving motor embedded in the mounting frame 51; an anti-slip sleeve 53 is provided on the surface of the roller 52, and the driving motor is electrically connected to the controller.

[0024] Working principle: In actual use, the bracket 4 is fixedly installed on the side wall of the cable trench through the fixing hole 42; the mobile seat 1 is clamped on the limit frame 41 through the clamping frame 3, so as to realize the installation of the mobile seat 1; the mobile frame 5 is arranged inside the mobile seat 1, and the mobile frame 5 is pressed against the bracket 4 through the roller 52, and the roller 52 is driven by the driving motor to rotate, so that the friction between the roller 52 and the bracket 4 is achieved to achieve the effect of movement. The detection head 2 draws in external air through the exhaust fan, which is convenient for the smoke sensor to detect the air; at the same time, the infrared temperature sensor also has a certain detection effect; when an abnormal signal is detected, it is fed back to the controller, and the controller alarms through the buzzer.

[0025] The rotation of the screw barrel 11 can mesh with the screw rod 33, so that the bracket 3 moves, which is convenient for the installation and separation of the bracket 3 and the limiting frame 41; the setting of the ball 32 can reduce the friction between the card slot 31 and the limiting frame 41. The position of the moving frame 5 can be adjusted by the electric push rod to ensure that the roller 52 is pressed against the bracket 4, and the anti-slip sleeve 53 has the effect of enhancing friction.

[0026] It is worth noting that the entire device is controlled by a main control button. Since the device matched with the control button is a common device and belongs to the existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A building cable trench fire alarm device, characterized in that: The invention comprises a movable seat (1), a detection head (2), a bracket (3) and a support (4); the detection head (2) is fixedly arranged on the movable seat (1); the bracket (3) is respectively arranged on the upper and lower sides of the movable seat (1); the bracket (4) is in the form of a strip structure as a whole, and one side of the bracket (4) is arranged close to the inner wall of the cable trench; a limiting bracket (41) is arranged on the side of the bracket (4) facing away from the inner wall of the cable trench, and the limiting bracket (41) and the bracket (3) are mutually clamped; the detection head (2) is in the form of a cylindrical structure as a whole, and the detection head (2) is arranged on the cylindrical side of the detection head (2). An air inlet (21) is arranged on the cylindrical end surface, and an air outlet (22) is arranged on the circumferential surface of the detection head (2); an exhaust fan, a smoke sensor, and an infrared temperature sensor are arranged inside the detection head (2); a controller and a buzzer are arranged inside the movable seat (1), and the exhaust fan, the smoke sensor, the infrared temperature sensor, and the buzzer are all electrically connected to the controller; a movable frame (5) is arranged on the side of the movable seat (1) facing away from the detection head (2), and the movable frame (5) is mutually supported by a bracket (4) through a roller (52).

2. A building cable trench fire alarm device according to claim 1, characterized in that: The upper and lower side edges of the bracket (4) are both provided with fixing holes (42), the fixing holes (42) are waist-shaped through holes, and a plurality of groups of the fixing holes are evenly arranged.

3. A building cable trench fire alarm device according to claim 1, characterized in that: The cross section of the limiting frame (41) is set to an L-shaped structure, and the limiting frame (41) is symmetrically arranged in two groups, and the L-shaped structure of the limiting frame (41) is folded outward; the clamping frame (3) is correspondingly provided with a clamping groove (31), and the clamping groove (31) and the limiting frame (41) are clamped with each other; the groove wall and the groove bottom of the clamping groove (31) are inlaid with balls (32), and the balls (32) are evenly arranged in multiple groups.

4. A building cable trench fire alarm device according to claim 1, characterized in that: The upper and lower sides of the movable seat (1) are both provided with screw barrels (11), and the screw barrel (11) is driven by a servo motor embedded in the movable seat (1); the bracket (3) is provided with a screw rod (33), and the screw rod (33) is correspondingly plugged into the screw barrel (11); the servo motor is electrically connected to a controller.

5. A building cable trench fire alarm device according to claim 1, characterized in that: An adjustment slot (12) is provided on the side of the movable seat (1) facing away from the detection head (2), and the movable frame (5) is arranged in the adjustment slot (12); an electric push rod is provided in the adjustment slot (12), and the movable frame (5) is connected to the electric push rod; the electric push rod is electrically connected to a controller.

6. A building cable trench fire alarm device according to claim 1, characterized in that: The mobile frame (5) is provided with a mounting frame (51), and the two ends of the roller (52) are connected to the mounting frame (51) through a rotating shaft and driven by a driving motor embedded in the mounting frame (51); the surface of the roller (52) is provided with an anti-slip sleeve (53), and the driving motor is electrically connected to a controller.

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