Fire alarm

Abstract

The utility model discloses a fire alarm comprising a wall body and a fire alarm main body, the top end of the wall body is provided with a top plate, a cavity is arranged between the wall body and the top plate, a rolling mechanism is arranged in the cavity, the rolling mechanism is provided with an installation assembly through a connecting mechanism, and the installation assembly is fixedly connected with the fire alarm main body. And a positioning assembly matched with the winding mechanism is arranged in the cavity. According to the utility model, the fire alarm main body can be conveniently assembled, the fire alarm main body can be lifted and clamped after being assembled, the stability in use is ensured, the fire alarm main body can be lowered when being assembled and needing to be overhauled or replaced, the fire alarm main body can be conveniently installed or overhauled by a worker, a climbing tool does not need to be carried, a climbing effect is not needed, and the fire alarm main body is relatively convenient and safe.

Description

Technical Field

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

[0002] With the increase in fire and electricity consumption in modern households, the frequency of household fires is increasing. Once a household fire occurs, it is easy to encounter unfavorable factors such as untimely firefighting, lack of fire-fighting equipment, panic among the people present, and slow escape, which ultimately leads to significant loss of life and property. As a small and efficient early warning device, fire alarms are of great significance in the requirements for household fire safety protection.

[0003] Most of the existing fire alarms are installed at high places to facilitate fire detection and alarm. When installing or performing subsequent maintenance and replacement operations, workers are required to climb up to perform the operations, which is relatively inconvenient and has certain risks. They also need to carry climbing tools such as ladders to operate, which is inconvenient to carry and transport. Utility Model Content

[0004] The purpose of the utility model is to provide a fire alarm 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 fire alarm, comprising a wall and a fire alarm body, a top plate is provided on the top of the wall, a cavity is provided between the wall and the top plate, a winding mechanism is provided in the cavity, the winding mechanism is provided with an installation component through a connecting mechanism, the installation component is fixedly connected to the fire alarm body, and a positioning component matching the winding mechanism is provided in the cavity.

[0006] Preferably, in order to facilitate the up and down movement of the fire alarm body, facilitate installation and use, and maintenance and lowering operations, the winding mechanism includes a motor arranged in the cavity, a rotating rod is fixedly provided at the output end of the motor, a rope reel is fixedly provided outside the rotating rod, and a connecting rope is provided on the rope reel.

[0007] Preferably, in order to position and fix after adjustment is completed to prevent the rotating rod from rotating, the positioning assembly includes positioning rings symmetrically arranged at both ends of the rotating rod, friction blocks are provided on the inner arc surface of the positioning ring, and the positioning ring is connected to the side wall of the cavity through an electric push rod.

[0008] Preferably, in order to guide the connecting rope and facilitate the line reeling and releasing operations, the connecting mechanism includes vertical plates symmetrically arranged on the top plate, a guide wheel is rotatably provided between the two vertical plates, and the connecting rope passes through the guide wheel and penetrates the top plate and is fixed with a connecting ring.

[0009] Preferably, in order to guide the connecting rope and facilitate the line reeling and releasing operations, the connecting mechanism also includes guide plates equidistantly arranged in the cavity, a rubber pad matching the connecting rope is provided in the middle of the guide plate, and the guide plate is fixedly connected to the side wall of the cavity through a fixing rod.

[0010] Preferably, in order to facilitate the assembly of the fire alarm body and facilitate downward movement when descending, the installation component includes a mounting plate fixedly connected to the fire alarm body, a counterweight plate is provided on the mounting plate, and the counterweight plate is fixedly connected to the connecting ring.

[0011] Preferably, in order to engage the counterweight plate and prevent shaking during use, a slot matching the counterweight plate is provided at the bottom of the top plate, and a placement groove matching the connecting ring is provided in the middle of the slot.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The fire alarm body can be easily assembled through the installation assembly of the reeling mechanism. After the assembly is completed, it can be lifted and locked to ensure stability during use. When it is assembled and needs to be repaired or replaced, it can be lowered to facilitate the installation or repair operations of the staff. There is no need to carry climbing tools or climbing functions, which is more convenient and safe;

[0014] (2) The connecting mechanism can guide the connecting rope during the lifting process, which is convenient for the operation of retracting and releasing the rope and avoiding deviation. The positioning component can limit and fix the rotating rod after the adjustment is completed to avoid rotation and prevent the fire alarm body from moving downward during use, thereby ensuring its stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a fire alarm proposed by the utility model;

[0016] Figure 2 This is a partial structural diagram of an installation component and a fire alarm body in a fire alarm proposed by the utility model;

[0017] Figure 3 This is a partial structural schematic diagram of a connecting mechanism in a fire alarm proposed by the utility model;

[0018] Figure 4 A partial structural schematic diagram of a fire alarm proposed by the utility model;

[0019] Figure 5 The utility model is a partial structural diagram of a reeling mechanism and a connecting mechanism in a fire alarm.

[0020] In the figure: 1. wall; 2. top plate; 3. cavity; 4. mounting plate; 5. fire alarm body; 6. connecting rope; 7. vertical plate; 8. slot; 9. placement slot; 10. connecting ring; 11. counterweight plate; 12. guide wheel; 13. motor; 14. rope winder; 15. fixing rod; 16. guide plate; 17. rubber pad; 18. rotating rod; 19. electric push rod; 20. positioning ring; 21. friction block. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 5 The utility model provides an embodiment: a fire alarm, including a wall 1 and a top plate 2, wherein the top plate 2 can be a ceiling or a suspended ceiling, etc., and the wall 1 is a building, which can be a shopping mall in a public place, or a corridor or a college in a residential area, etc., where a fire alarm body 5 is installed. The fire alarm body 5 can be an independent fire alarm, that is, a battery and a detection device (photoelectric or smoke sensor) and an alarm are arranged inside, etc., or it can be other types of fire alarms, which can be selected and installed according to the situation. It can detect fires and issue an alarm in time after a fire. It is a relatively mature technology and will not be described in detail here.

[0023] See also Figure 1-Figure 5In order to facilitate the installation and use of the fire alarm body 5, as well as regular maintenance or replacement operations, there is no need for workers to climb up, and maintenance is more convenient and safe. There is a cavity 3 with a rectangular cross-section between the wall 1 and the top plate 2, which can be conveniently assembled with a motor 13 of the winding mechanism. The motor 13 can be fixedly assembled with the bottom end of the cavity 3 through a mounting seat to ensure the stability of the motor 13. The output end of the motor 13 is fixedly installed with a rotating rod 18 through a coupling. The outer sleeve of the rotating rod 18 is provided with a rope reel 14 for conveniently winding the connecting rope 6, and the connecting rope 6 passes through the cavity 3 (through the through hole on the top plate 2), and the top of the top plate 2 is symmetrically installed with vertical plates 7 of the connecting mechanism, and a guide is arranged between the two vertical plates 7 for rotation. The wheel 12 can conveniently guide the connecting rope 6. The connecting rope 6 passes through the guide wheel 12 and penetrates the top plate 2 (through the through hole on the top plate 2) and extends to the bottom to be connected with a connecting ring 10, and the fire alarm body 5 is fixed (can be screwed) to the mounting plate 4 of the mounting assembly, and a counterweight plate 11 is bonded to the mounting plate 4 to increase the overall counterweight, which can facilitate the subsequent lowering operation, and the top of the counterweight plate 11 is welded and fixed to the connecting ring 10, and the bottom of the top plate 2 is provided with a card slot 8 matching the counterweight plate 11, and the middle of the card slot 8 is provided with a placement groove 9 matching the connecting ring 10, which can be conveniently engaged after rising to the top to avoid overall shaking and ensure the stability of the fire alarm body 5.

[0024] See also Figure 1-Figure 5 In order to ensure that the connecting rope 6 does not deviate during the winding process, it can be guided. At the same time, it can also ensure that the fire alarm body 5 is fixed after being raised to prevent the rope reel 14 from rotating again to ensure stability. The guide plates 16 (which can be two groups) of the connecting mechanism are equidistantly arranged in the cavity 3. A hole groove is opened in the middle of the guide plate 16 to facilitate the connection rope 6 to pass through. A rubber pad 17 is bonded in the hole groove to reduce the wear of the connection rope 6. The guide plate 16 is fixedly connected to the side wall of the cavity 3 through the fixing rod 15 to ensure stability. The two ends of the rotating rod 18 The positioning rings 20 are symmetrically arranged, and the two positioning rings 20 at the same end are spliced ​​into an annular column, and the inner arc surface of the positioning ring 20 is bonded with a friction block 21 (the material can be frosted stone or other materials with a large friction coefficient to ensure the positioning effect when in contact with the rotating rod 18 and avoid rotation. It is a relatively mature technology and will not be described here). The positioning ring 20 is connected to the side wall of the cavity 3 through an electric push rod 19, which can facilitate the adjustment of the positioning ring 20, and thus the rotation of the rotating rod 18 will not be affected during lifting. After the adjustment is completed, the rotating rod 18 can be positioned to prevent rotation.

[0025] Working principle: When the utility model is in use, after the fire alarm body 5 is assembled, the motor 13 is rotated forward, and the rotating rod 18 and the rope reel 14 are rotated, so that the connecting rope 6 can be reeled up, and the guide wheel 12 between the guide plate 16 and the vertical plate 7 can facilitate the movement of the connecting rope 6, and the counterweight plate 11 and the mounting plate 4 can be moved upward. After moving into the slot 8, the connecting ring 10 enters the placement slot 9 at the same time. At this time, under the engagement between the counterweight plate 11 and the slot 8, the mounting plate 4 and the fire alarm body 5 can be limited, and at the same time, the electric push rod 19 is extended, and the positioning ring 20 is pressed against each other. When the rotation of the rotating rod 18 is close, the friction block 21 contacts and limits the rotation of the rotating rod 18, which can prevent the rotating rod 18 from rotating, thereby ensuring the stability of the fire alarm body 5 during use. When maintenance or replacement operations are required, the electric push rod 19 is first retracted, and the positioning rings 20 are moved away from each other, and the limit on the rotating rod 18 is lost. The motor 13 can be rotated in the opposite direction, and the rope winder 14 can be rotated to pay out the connecting rope 6. At this time, the counterweight plate 11 moves downward under the action of its own gravity, and then the mounting plate 4 and the fire alarm body 5 can be moved downward. The staff can complete the maintenance or replacement operations without climbing, which is more convenient and safe.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fire alarm, comprising a wall (1) and a fire alarm body (5), characterized in that: A top plate (2) is provided at the top of the wall (1), a cavity (3) is provided between the wall (1) and the top plate (2), a reeling mechanism is provided in the cavity (3), the reeling mechanism is provided with a mounting assembly via a connecting mechanism, the mounting assembly is fixedly connected to the fire alarm body (5), and a positioning assembly matching the reeling mechanism is provided in the cavity (3).

2. A fire alarm according to claim 1, characterized in that: The winding mechanism comprises a motor (13) arranged in the cavity (3), a rotating rod (18) being fixedly provided at the output end of the motor (13), a rope reel (14) being fixedly provided outside the rotating rod (18), and a connecting rope (6) being provided on the rope reel (14).

3. A fire alarm according to claim 2, characterized in that: The positioning assembly comprises positioning rings (20) symmetrically arranged at both ends of the rotating rod (18), a friction block (21) being provided on the inner arc surface of the positioning ring (20), and the positioning ring (20) is connected to the side wall of the cavity (3) via an electric push rod (19).

4. A fire alarm according to claim 3, characterized in that: The connection mechanism comprises vertical plates (7) symmetrically arranged on the top plate (2), a guide wheel (12) being rotatably arranged between the two vertical plates (7), and the connection rope (6) passing through the guide wheel (12) and penetrating the top plate (2) to be fixedly provided with a connection ring (10).

5. A fire alarm according to claim 4, characterized in that: The connection mechanism further comprises guide plates (16) equidistantly arranged in the cavity (3), a rubber pad (17) matching the connection rope (6) being provided in the middle of the guide plates (16), and the guide plates (16) being fixedly connected to the side wall of the cavity (3) via a fixing rod (15).

6. A fire alarm according to claim 5, characterized in that: The mounting assembly comprises a mounting plate (4) fixedly connected to a fire alarm body (5); a counterweight plate (11) is provided on the mounting plate (4); and the counterweight plate (11) is fixedly connected to the connecting ring (10).

7. A fire alarm according to claim 6, characterized in that: A slot (8) matching the counterweight plate (11) is provided at the bottom end of the top plate (2), and a placement groove (9) matching the connecting ring (10) is provided in the middle of the slot (8).

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