Liftable smoke alarm device

Abstract

The utility model provides a liftable smoke alarm device which comprises a smoke alarm which is arranged indoors through a lifting assembly. The lifting assembly comprises a first fixed pulley, a second fixed pulley, an upper limiting piece, a lower limiting piece and a pull rope. The first fixed pulley and the second fixed pulley are both arranged at the indoor top and are arranged at intervals, the upper limiting piece is arranged below the second fixed pulley and provided with an upper penetrating hole, and the lower limiting piece is arranged below the upper limiting piece and provided with a lower penetrating hole; the other end of the pull rope sequentially bypasses the first fixed pulley and the second fixed pulley and continues to sequentially penetrate through the upper penetrating hole of the upper limiting piece and the lower penetrating hole of the lower limiting piece, the pull rope is provided with a check block below the upper limiting piece, and the smoke alarm can descend to the upper limiting piece to be blocked by the check block by loosening the pull rope. The pull rope is pulled down so that the smoke alarm can rise to the lower limiting piece to be blocked by the stop block. According to the utility model, the large-range lifting of the smoke alarm can be effectively ensured, and the smoke alarm is very suitable for smoke alarm in a relatively high indoor environment.

Description

Technical Field

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

[0002] A smoke alarm is an alarm device, which specifically refers to the use of sensors inside the smoke alarm to sense smoke inside a designated area. When the smoke concentration is too high, an alarm will be triggered to serve the purpose of a warning alarm. When using existing smoke alarms, the smoke alarm needs to be installed in the central area of ​​the top of the building. The central area is convenient for the smoke alarm to detect the room, but because it is in the middle, there are few climbing devices that can be attached, and maintenance personnel usually need to climb a ladder. This method is very time-consuming, labor-intensive, and unsafe, and it is not convenient for maintenance operations. For buildings with relatively high indoor spaces, this maintenance method is even more undesirable.

[0003] The Chinese patent application number 202321359254.3 discloses a multifunctional smoke alarm, which includes a smoke alarm. An electric telescopic rod is installed on the upper end of the smoke alarm. The height of the smoke alarm is lowered by pushing the electric telescopic rod. The lowered height of the electric telescopic rod makes it easier for staff to inspect and repair it. This method of using an electric telescopic rod to lift the alarm body has the characteristics of convenient operation, but its shortcomings are: 1. The telescopic length of the telescopic rod is usually limited. For a very high indoor environment, such as the high and low voltage distribution room configured by the applicant in the grain depot, which has a height of 7.2 meters, the solution of using an electric telescopic rod to lift the alarm is not easy to implement; 2. The electric telescopic rod is an electrical equipment, which itself also requires relatively high frequency of inspection and maintenance, and its location at the top of the room will make the inspection and maintenance more cumbersome. Therefore, it is necessary to improve it. Summary of the invention

[0004] The purpose of the utility model is to provide a liftable smoke alarm device, which has the characteristics of simple structure, easy implementation and simple operation, can effectively ensure the lifting of the smoke alarm over a large range, and is very suitable for smoke alarms in higher indoor environments.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A liftable smoke alarm device comprises a smoke alarm, wherein the smoke alarm is liftable and arranged indoors through a lifting assembly; the lifting assembly comprises a first fixed pulley, a second fixed pulley, an upper limit member, a lower limit member and a pull rope; the first fixed pulley and the second fixed pulley are both arranged at the top of the room and are arranged at intervals, the upper limit member is arranged below the second fixed pulley and has an upper through hole arranged vertically, the lower limit member is arranged below the upper limit member and has a lower through hole arranged vertically, one end of the pull rope is fixedly connected to the top of the smoke alarm, the other end of the pull rope sequentially bypasses the first fixed pulley and the second fixed pulley, and continues to sequentially pass through the upper through hole of the upper limit member and the lower through hole of the lower limit member, a block is provided on the pull rope below the upper limit member, loosening the pull rope can cause the smoke alarm to descend and the block to ascend until the upper limit member is blocked by the block, and pulling the pull rope downward can cause the smoke alarm to ascend and the block to descend until the lower limit member is blocked by the block.

[0007] Optimization solution: The stopper of the utility model is a block structure whose size is larger than the upper through hole and the lower through hole, and it cannot pass through the upper through hole and the lower through hole.

[0008] In the utility model, the upper limit member can be a block structure.

[0009] In the utility model, a structure that can be adopted for the lower limit member is: the lower limit member includes a lower limit block and a rope collector located below the lower limit block, the rope collector includes a rope collector shell, a reel arranged in the rope collector shell and a rotating handle arranged outside the rope collector shell, the rope collector shell is provided with a rope threading hole, the lower through hole is arranged on the lower limit block, and the pull rope passes through the lower through hole and then passes through the rope threading hole of the rope collector shell and is wound around the reel.

[0010] Furthermore, the lower limit block is fixed on the outer shell of the rope collector, and the rope threading hole of the outer shell of the rope collector is arranged opposite to the lower through hole of the lower limit block.

[0011] In the present invention, another structure that the lower limit member can adopt is: the lower limit member is a block structure, which also has a vertically arranged side through hole, one end of the side through hole is connected to the lower through hole, and the other end is connected to the side of the lower limit member.

[0012] Furthermore, the lower limit member is provided with a rope collecting rod portion, and the pull rope located below the lower limit member can be wound and stored on the rope collecting rod portion.

[0013] Optimization solution: The smoke alarm of the utility model is provided with a counterweight block for increasing the weight of the smoke alarm.

[0014] Optimization scheme, the first fixed pulley of the utility model is arranged near the middle of the indoor ceiling, the second fixed pulley is arranged at the edge of the indoor ceiling close to the wall, and the upper limit member and the lower limit member are respectively arranged on the indoor wall.

[0015] The utility model has the following substantial features and advancements:

[0016] 1. The utility model allows the smoke alarm to move up and down as the pull rope is retracted and released. At the same time, an upper limit member and a lower limit member are provided to limit the lifting position of the smoke alarm, and finally the smoke alarm is lowered to a suitable lower position, so as to save time and effort and promptly and quickly perform maintenance on the smoke alarm.

[0017] 2. The lifting assembly of the utility model is mechanically manually operated and is not easily damaged during use. In addition, the distance between the upper limit part and the lower limit part is the lifting range of the smoke alarm. Therefore, by setting the distance between the upper limit part and the lower limit part, the smoke alarm can be lowered to a suitable height from the indoor floor to facilitate maintenance by maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the liftable smoke alarm device of this embodiment 1 when the smoke alarm is in a raised state.

[0019] Figure 2 Schematic diagram of the structure of the upper limit member in Example 1.

[0020] Figure 3 for Figure 1 Enlarged view of part A in the middle.

[0021] Figure 4 It is a structural schematic diagram of the liftable smoke alarm device of this embodiment 1 when the smoke alarm is in a lowered state.

[0022] Figure 5 for Figure 4 Enlarged view of part B in the middle.

[0023] Figure 6 This is a schematic structural diagram of the liftable smoke alarm device of Embodiment 2 when the smoke alarm is in a raised state.

[0024] Figure 7 This is a schematic diagram of the top view of the lower limit member in Example 2.

[0025] Figure 8 for Figure 6 Enlarged view of part C in the middle.

[0026] Fig. 9 This is a structural schematic diagram of the liftable smoke alarm device of this embodiment 2 when the smoke alarm is in a lowered state. DETAILED DESCRIPTION

[0027] The utility model will be further described below in conjunction with the accompanying drawings.

[0028] Example 1

[0029] refer to Figures 1 to 5 A liftable smoke alarm device includes a smoke alarm 10, and the smoke alarm 10 is liftably arranged in a room 9 through a lifting component.

[0030] The lifting assembly includes a first fixed pulley 1, a second fixed pulley 2, an upper limit member 3, a lower limit member and a pull rope 5; the first fixed pulley 1 and the second fixed pulley 2 are both arranged at the top of the room 9 and are arranged at intervals, the upper limit member 3 is arranged below the second fixed pulley 2, and has an upper through hole 30 arranged vertically, the lower limit member is arranged below the upper limit member 3, and has a lower through hole 40 arranged vertically, one end of the pull rope 5 is fixedly connected to the top of the smoke alarm 10, and the other end of the pull rope 5 successively bypasses the first fixed pulley 1 and the second fixed pulley 2, and continues to successively pass through the upper through hole 30 of the upper limit member 3 and the lower through hole 40 of the lower limit member, a stopper 6 is provided on the pull rope 5 below the upper limit member 3, and the stopper 6 plays a role of being blocked and restricted by the upper limit member 3 and the lower limit member, and is made of a lighter material, and the stopper 6 can be pulled up when the smoke alarm 10 is lowered. Loosening the pull cord 5 can cause the smoke alarm 10 to descend and the stopper 6 to ascend until the upper limit member 3 is blocked by the stopper 6 , while pulling down the pull cord 5 can cause the smoke alarm 10 to ascend and the stopper 6 to descend until the lower limit member is blocked by the stopper 6 .

[0031] When the liftable smoke alarm device of this embodiment is installed, Figure 1 and Figure 4 As shown, the first fixed pulley 1 is arranged near the middle of the top surface of the indoor room 9, the second fixed pulley 2 is arranged at the edge of the top surface of the indoor room 9 close to the wall 91, and the upper limit member 3 and the lower limit member are respectively arranged on the wall 91 of the indoor room 9.

[0032] In the above structure, the smoke alarm 10 in this embodiment can be raised and lowered as the pull rope 5 is retracted and released, specifically:

[0033] (1) Figure 4 As shown, the pull rope 5 is loosened, the smoke alarm 10 falls due to gravity, and the block 6 rises. When the block 6 rises to the point where it is blocked by the upper limit member 3, the smoke alarm 10 stops falling, and the block 6 that can no longer rise keeps the smoke alarm 10 at a certain falling position. Taking the applicant's 7.2-meter-high high and low voltage distribution room as an example, the smoke alarm 10 is specifically lowered to about 1.6 meters from the ground, so that the maintenance worker can quickly and easily perform maintenance on the smoke alarm 10.

[0034] (2) Figure 1As shown, the pull cord 5 is pulled down, so that the smoke alarm 10 is pulled up, and the block 6 is lowered at the same time. When the block 6 is lowered to be blocked by the lower limit member, the smoke alarm 10 stops rising and is located at the top of the room 9, which is used for daily smoke detection and alarm in the room 9.

[0035] In this embodiment, the upper limit member 3 is a block structure. The stopper 6 is a block structure whose size is larger than the upper through hole 30 and cannot pass through the upper through hole 30, thereby realizing the upper limit member 3 blocking the stopper 6 from rising.

[0036] In this embodiment, the specific structure of the lower limit member is as follows: it includes a lower limit block 41 and a rope collector 42 located below the lower limit block 41. The rope collector 42 includes a rope collector housing 421, a reel 422 disposed in the rope collector housing 421, and a rotating handle 423 disposed outside the rope collector housing 421. The rope collector housing 421 has a rope threading hole, and the lower through hole 40 is disposed on the lower limit block 41. The size of the block 6 is also larger than the lower through hole 40, and it cannot pass through the lower through hole 40. After passing through the lower through hole 40, the pull rope 5 passes through the rope threading hole of the rope collector housing 421 and is wound around the reel 422. In the above structure, the rope collector 42 plays a role in quickly and conveniently releasing and retracting the pull rope 5, and at the same time, the locking mechanism on the rope collector 42 is also utilized to stop the pull rope 5 from continuing to be retracted and released. In particular, when the stopper 6 descends to the lower limit member, the rope take-up device 42 is locked, and the drum 422 thereof stops rotating, thereby effectively maintaining the smoke alarm 10 at the top of the room 9 .

[0037] Furthermore, in this embodiment, the lower limit block 41 is fixed to the rope collector housing 421, and the rope threading hole of the rope collector housing 421 is arranged opposite to the lower through hole 40 of the lower limit block 41. The above structure fixes the lower limit block 41 to the rope collector housing 421, making the structure of the lower limiter more compact and more convenient to install.

[0038] Furthermore, in this embodiment, a counterweight 101 is provided on the smoke alarm 10 for increasing the weight of the smoke alarm 10 so that the smoke alarm 10 can be quickly lowered.

[0039] It can be seen that in the liftable smoke alarm device of this embodiment, the rope retractor 42 in the lower limiter can realize the retraction and extension of the pull rope 5, and the smoke alarm 10 can be lifted and lowered by retracting and releasing the pull rope 5, and the upper and lower limiters cooperate with the block 6 on the pull rope 5 to realize the position positioning of the smoke alarm 10 after lifting and lowering, and then the smoke alarm 10 is lowered to a suitable lower position, so as to save time and effort, and promptly and quickly perform maintenance on the smoke alarm. After the maintenance, the smoke alarm 10 is raised to the top of the room 9 to restore the daily smoke monitoring and alarm state.

[0040] Example 2

[0041] refer to Figures 6 to 9 The difference between the liftable smoke alarm device of this embodiment and the embodiment 1 is that the specific structure of the lower limiter is different from that of the embodiment 1. The specific structure of the lower limiter of this embodiment is as follows: the lower limiter is a block structure, and it also has a vertically arranged side through hole 401, one end of the side through hole 401 is connected to the lower through hole 40, and the other end is connected to the side of the lower limiter. The liftable smoke alarm device of this embodiment has the same installation structure as that of the embodiment 1, such as Figure 6 and Fig. 9 As shown, the limiting principle of the lower limiting member of this embodiment for the smoke alarm 10 raised to the top of the room 9 is:

[0042] (1) When the smoke alarm 10 is raised to near the top of the room 9, the stopper 6 on the pull rope 5 is still located near the top of the lower limiter. At this time, the pull rope 5 is pulled down and pulled out from the side through hole 401. Then, the pull rope 5 is pulled down until the stopper 6 is located below the lower limiter. Then, the pull rope is stopped and the pull rope 5 is passed back into the lower through hole 40 through the side through hole 401. Under the action of the self-weight of the smoke alarm 10, the stopper 6 is blocked below the lower limiter, thereby positioning the smoke alarm 10 at the top of the room 9.

[0043] (2) When the smoke alarm 10 needs to be lowered, the pull rope 5 is pulled out from the side through hole 401 and the rope is released, and the stopper 6 rises with the pull rope 5 to the top of the lower limiter. After that, the smoke alarm 10 continues to descend due to gravity, and the stopper 6 continues to rise with the pull rope 5 until the stopper 6 is blocked below the upper limiter, so that the smoke alarm 10 stops descending and is maintained at a predetermined lower position, which is convenient for maintenance workers to perform maintenance. It should be pointed out that after the stopper 6 rises to the top of the lower limiter, the pull rope 5 below the stopper 6 can be passed back through the side through hole 401 into the lower through hole 40 to prevent the lower section of the pull rope 5 from being detached from the restriction of the lower limiter and getting entangled.

[0044] Furthermore, the lower limit member also has a rope collecting rod 402, and the pull rope 5 located below the lower limit member can be wound and stored on the rope collecting rod 402, so as to wrap the lower section of the pull rope 5 around the rope collecting rod 402 after the smoke alarm 10 is raised or lowered, so as to prevent the pull rope 5 from being entangled and facilitate the next use.

[0045] The liftable smoke alarm device of this embodiment can also realize the lifting and lowering of the smoke alarm 10, and has a simpler structure and lower cost.

Claims

1. A liftable smoke alarm device, comprising a smoke alarm (10), wherein the smoke alarm (10) is liftably arranged in a room (9) via a lift assembly; Features: The lifting assembly comprises a first fixed pulley (1), a second fixed pulley (2), an upper limit member (3), a lower limit member and a pull rope (5); the first fixed pulley (1) and the second fixed pulley (2) are both arranged at the top of the room (9) and are arranged at intervals; the upper limit member (3) is arranged below the second fixed pulley (2) and has an upper through hole (30) arranged vertically; the lower limit member is arranged below the upper limit member (3) and has a lower through hole (40) arranged vertically; one end of the pull rope (5) is fixedly connected to the top of the smoke alarm (10); The other end of the pull rope (5) is passed around the first fixed pulley (1) and the second fixed pulley (2) in sequence, and then passes through the upper through hole (30) of the upper limit member (3) and the lower through hole (40) of the lower limit member in sequence. A stopper (6) is provided on the pull rope (5) below the upper limit member (3). When the pull rope (5) is loosened, the smoke alarm (10) can be lowered and the stopper (6) can be raised until the upper limit member (3) is blocked by the stopper (6). When the pull rope (5) is pulled down, the smoke alarm (10) can be raised and the stopper (6) can be lowered until the lower limit member is blocked by the stopper (6).

2. A liftable smoke alarm device according to claim 1, Features: The stopper (6) is a block-shaped structure whose size is larger than the upper through hole (30) and the lower through hole (40), and it cannot pass through the upper through hole (30) and the lower through hole (40).

3. A liftable smoke alarm device according to claim 1, Features: The upper limit member (3) is a block structure.

4. A liftable smoke alarm device according to claim 1, 2 or 3, Features: The lower limit member includes a lower limit block (41) and a rope collector (42) located below the lower limit block (41); the rope collector (42) includes a rope collector housing (421), a reel (422) arranged in the rope collector housing (421), and a rotating handle (423) arranged outside the rope collector housing (421); the rope collector housing (421) is provided with a rope threading hole; the lower through hole (40) is arranged on the lower limit block (41); the pull rope (5) passes through the lower through hole (40) and then passes through the rope threading hole of the rope collector housing (421) and is wound around the reel (422).

5. A liftable smoke alarm device according to claim 4, Features: The lower limit block (41) is fixed on the rope collector housing (421), and the rope threading hole of the rope collector housing (421) is arranged opposite to the lower through hole (40) of the lower limit block (41).

6. A liftable smoke alarm device according to claim 1, 2 or 3, Features: The lower stopper is a block-shaped structure and further has a vertically arranged side through hole (401), one end of the side through hole (401) is connected to the lower through hole (40), and the other end is connected to the side surface of the lower stopper.

7. A liftable smoke alarm device according to claim 6, Features: The lower limit member is also provided with a rope collecting rod (402), and the pull rope (5) located below the lower limit member can be wound and collected on the rope collecting rod (402).

8. A liftable smoke alarm device according to claim 1, 2 or 3, Features: The smoke alarm (10) is provided with a counterweight (101) for increasing the weight of the smoke alarm (10).

9. A liftable smoke alarm device according to claim 1, 2 or 3, Features: The first fixed pulley (1) is arranged near the middle of the top surface of the room (9), the second fixed pulley (2) is arranged at the edge of the top surface of the room (9) close to the wall surface (91), and the upper limit member (3) and the lower limit member are respectively arranged on the wall surface (91) of the room (9).

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