Novel fire-fighting smoke ventilator

Abstract

A novel fire-fighting smoke ventilator comprises a smoke ventilator body, a fixing frame and a hanging assembly. The smoke extractor body is mounted on the fixing frame, and the fixing frame can be placed on the ground; the hanging assembly comprises two first hanging rods and two second hanging rods, the two first hanging rods are rotatably installed on the outer side of the back of the fixing frame and can be folded on the fixing frame or unfolded from the fixing frame, and the two first hanging rods can be synchronously hung on the wall of a windowsill after being unfolded so that the fixing frame and the smoke extractor body can be hung on the windowsill for use; the two second hanging rods are rotatably mounted on the inner side of the back of the fixing frame respectively and can be folded on the fixing frame or unfolded from the fixing frame, and the two second hanging rods can be synchronously hung on steps of a fire ladder after being unfolded, so that the fixing frame and the smoke extractor body are hung on the fire ladder for use; therefore, the novel fire-fighting smoke ventilator not only can be placed on the ground for use, but also can be hung on a windowsill or a fire ladder for use, so that the use scene is enriched, and the use convenience and stability are improved.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection equipment technology, and in particular relates to a new type of fire smoke exhaust fan. Background Technology

[0002] Fire smoke exhaust systems are devices used to quickly remove smoke from fire scenes. They can discharge smoke and dust from the fire to a safe area, providing a clear working environment for firefighting, creating favorable conditions for safe evacuation and firefighting, and ensuring the safety of people's lives and property.

[0003] Most existing fire exhaust fans are placed on the ground for use, but the ground at fire scenes is often very wet and cluttered with debris. Firefighters need to clean the ground before placing the fire exhaust fan, which makes it inconvenient to use. At the same time, the fire exhaust fan will generate vibrations when it is working. These vibrations are transmitted to the ground and then reflect back to the fire exhaust fan, making it easy for it to tip over. Its poor stability causes great trouble for firefighters.

[0004] Therefore, it is necessary to design a new type of fire smoke exhaust fan to solve this problem. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This utility model provides a new type of fire smoke exhaust fan that can be used either on the ground or suspended on a windowsill or fire ladder, enriching the usage scenarios and improving the convenience and stability of use.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A novel fire-fighting smoke exhaust fan includes a smoke exhaust fan body, a mounting frame, and a suspension assembly. The smoke exhaust fan body is mounted on the mounting frame, which can be placed on the ground. The suspension assembly includes two first hanging rods and two second hanging rods. The two first hanging rods are rotatably mounted on the outer back of the mounting frame and can be folded onto or unfolded from the mounting frame. The two second hanging rods are rotatably mounted on the inner back of the mounting frame and can be folded onto or unfolded from the mounting frame.

[0010] The two first hanging rods can be simultaneously hung on the window sill wall after being unfolded, so as to suspend the fixing frame and the smoke exhaust fan body on the window sill for use; the two second hanging rods can be simultaneously hung on the fire ladder steps after being unfolded, so as to suspend the fixing frame and the smoke exhaust fan body on the fire ladder for use.

[0011] Preferably, the outer side of the back of the fixing frame is provided with two first connecting seats, and the inner side of the back of the fixing frame is provided with two second connecting seats; the first hanging rod consists of a first rod body and a first hook head, and the first rod body is rotatably mounted on the first connecting seat so that the first hook head can be folded onto the fixing frame or unfolded from the fixing frame; the second hanging rod consists of a second rod body and a second hook head, and the second rod body is rotatably mounted on the second connecting seat so that the second hook head can be folded onto the fixing frame or unfolded from the fixing frame.

[0012] Preferably, the first rod body is also slidably connected to the first connecting seat, and both ends of the first rod body are threaded with first nuts, both of which can move along the first rod body to abut against the first connecting seat; the second rod body is also slidably connected to the second connecting seat, and both ends of the second rod body are threaded with second nuts, both of which can move along the second rod body to abut against the second connecting seat.

[0013] Preferably, the fixing frame is further equipped with a first strap and a second strap; when the first hook is folded onto the fixing frame, the first strap can bind and fix the first hook; when the second hook is folded onto the fixing frame, the second strap can bind and fix the second hook.

[0014] Preferably, it also includes a fastening strap, which is mounted on the fixing frame and has a hook; when the two second hanging rods are simultaneously attached to the fire ladder steps, the fastening strap can hook the fire ladder steps through the hook.

[0015] Preferably, the exhaust fan body is rotatably mounted on the top of the fixed frame, and the connection between the exhaust fan body and the fixed frame is damped.

[0016] Preferably, the bottom of the mounting frame is equipped with multiple casters.

[0017] Preferably, the exhaust fan body is equipped with a mounting bracket for installing a hanging rope.

[0018] Preferably, it also includes a control box, which is installed inside the fixed frame, and the control box is provided with a main control unit, a power supply unit and a remote control unit. The main control unit is electrically connected to the power supply unit, the remote control unit and the smoke exhaust machine body.

[0019] Preferably, the main control unit, the power supply unit, and the remote control unit are designed independently or integrated into one unit.

[0020] Preferably, a warning light is installed on the exhaust fan body, and the main control unit is electrically connected to the warning light.

[0021] (III) Beneficial Effects

[0022] This utility model provides a novel fire-fighting smoke exhaust fan. A mounting bracket is designed for installing the smoke exhaust fan body, allowing it to be placed on the ground. A foldable first or second hanging rod is designed on the back of the bracket, enabling the smoke exhaust fan body to be suspended from a windowsill or fire escape ladder, enriching its usage scenarios and improving ease of use. Furthermore, when the smoke exhaust fan body is suspended on a windowsill or fire escape ladder, the vibrations generated during operation cannot be reflected through the ground. Simultaneously, under the action of gravity, the first or second hanging rod can firmly grip the windowsill or fire escape ladder, improving installation stability. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 A schematic diagram of the overall structure of this utility model is shown. Figure 1 ;

[0025] Figure 2 It shows Figure 1 Enlarged view of point A in the middle;

[0026] Figure 3 A schematic diagram of the overall structure of this utility model is shown. Figure 2 ;

[0027] Figure 4 It shows Figure 3 Enlarged view of point B in the middle;

[0028] Figure 5 This diagram illustrates the usage state of the present invention. Figure 1 ;

[0029] Figure 6 A schematic diagram of the overall structure of this utility model is shown. Figure 3 ;

[0030] Figure 7 This diagram illustrates the usage state of the present invention. Figure 2 ;

[0031] Figure 8 A schematic diagram of the overall structure of this utility model is shown. Figure 4 ;

[0032] Figure 9 It shows Figure 8 The right view;

[0033] Figure 10 It shows Figure 9 AA sectional view.

[0034] In the diagram: 1. Exhaust fan body, 11. Mounting bracket, 12. Warning light, 2. Fixing frame, 21. First connecting seat, 22. Second connecting seat, 23. First strap, 24. Second strap, 25. Caster wheel, 26. Bolt, 3. Suspension assembly, 31. First hanging rod, 311. First rod body, 3110. First nut, 312. First hook, 32. Second hanging rod, 321. Second rod body, 3210. Second nut, 322. Second hook, 4. Fastening strap, 40. Hook, 5. Control box, 51. Main control unit, 52. Power supply unit, 53. Remote control unit. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application. It is understood that the accompanying drawings are provided for reference and illustration only, and are not intended to limit this application. The connection relationships shown in the accompanying drawings are only for clear description and do not limit the connection method.

[0036] It should be noted that in the description of this application, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] See appendix Figure 1 - Appendix Figure 10 A novel fire-fighting smoke exhaust fan includes a smoke exhaust fan body 1, a fixed frame 2, and a suspension assembly 3. The smoke exhaust fan body 1 is mounted on the fixed frame 2, which can be placed on the ground. The suspension assembly 3 includes two first hanging rods 31 and two second hanging rods 32. The two first hanging rods 31 are rotatably mounted on the outer back of the fixed frame 2 and can be folded onto or unfolded from the fixed frame 2. The two second hanging rods 32 are rotatably mounted on the inner back of the fixed frame 2 and can be folded onto or unfolded from the fixed frame 2.

[0038] Specifically, based on the above structure, this new type of fire smoke exhaust fan has at least three usage scenarios;

[0039] First, as attached Figure 1As shown, when both first hanging rods 31 and both second hanging rods 32 are in a folded state, the fixing frame 2 can be placed on the ground to support the smoke exhaust machine body 1 for use.

[0040] Second, as attached Figure 3 and attached Figure 5 As shown, with the two second hanging rods 32 in a folded state, the two first hanging rods 31 are unfolded from the fixing frame 2, and then the two first hanging rods 31 are simultaneously hung against the window sill wall to install the fixing frame 2 onto the window sill, thereby allowing the smoke exhaust fan body 1 to be suspended on the window sill for use.

[0041] Third, as attached Figure 6 and attached Figure 7 As shown, with the two first hanging rods 31 in a folded state, the two second hanging rods 32 are unfolded from the fixing frame 2, and then the two first hanging rods 31 are simultaneously attached to the fire ladder steps to install the fixing frame 2 onto the fire body, thereby allowing the smoke exhaust fan body 1 to be suspended on the fire ladder for use.

[0042] After use, both first hanging rods 31 and both second hanging rods 32 are folded back to reduce the overall size and facilitate the transfer of the new fire smoke exhaust fan by firefighters.

[0043] In summary, this utility model, by designing a fixing frame 2 for mounting the smoke exhaust fan 1, allows the smoke exhaust fan 1 to be placed on the ground for use; by designing a foldable and unfoldable first hanging rod 31 or second hanging rod 32 on the back of the fixing frame 2, the smoke exhaust fan 1 can be suspended on a windowsill or fire ladder for use, enriching the usage scenarios and improving the convenience of use; and when the smoke exhaust fan 1 is suspended on a windowsill or fire ladder, the vibration generated by the operation of the smoke exhaust fan 1 cannot be reflected through the ground, and at the same time, under the action of gravity, the first hanging rod 31 or second hanging rod 32 can also firmly grip the windowsill or fire ladder, improving the installation stability.

[0044] It should be noted that the smoke exhaust unit 1 is an existing product, and there are various ways to power it, which will not be described or limited in detail in this utility model; on the other hand, the first hanging rod 31 can be hung not only on the window sill or wall, but also on other objects with a large thickness. Similarly, the second hanging rod 32 can be hung not only on the fire ladder steps, but also on other objects with a small thickness. This utility model will not limit this as well.

[0045] See appendix Figure 1 - Appendix Figure 7The shapes of the first hanging rod 31 and the second hanging rod 32 are varied, and the rotational connection methods between the fixing frame 2 and the first hanging rod 31 and the second hanging rod 32 are also varied. Therefore, this utility model does not impose any restrictions on these. For ease of understanding, in this embodiment, two first connecting seats 21 are provided on the outer side of the back of the fixing frame 2, and two second connecting seats 22 are provided on the inner side of the back of the fixing frame 2. The first hanging rod 31 is composed of a first rod body 311 and a first hook head 312, and the first rod body 311 is rotatably mounted on the first connecting seat 21 so that the first hook head 312 can be folded onto the fixing frame 2 or unfolded from the fixing frame 2. The second hanging rod 32 is composed of a second rod body 321 and a second hook head 322, and the second rod body 321 is rotatably mounted on the second connecting seat 22 so that the second hook head 322 can be folded onto the fixing frame 2 or unfolded from the fixing frame 2.

[0046] Specifically, when the exhaust fan 1 needs to be hung on the windowsill for use, rotate the two first rods 311 in the forward direction around the two first connecting seats 21 so that the two first hooks 312 are moved away from the fixing frame 2 and unfolded. At this time, the two first hooks 312 can hook onto the wall at the windowsill. After use, lift the fixing frame 2 so that the two first hooks 312 are simultaneously detached from the windowsill wall, and rotate the two first rods 311 in the reverse direction around the two first connecting seats 21 so that the two first hooks 312 can be folded back.

[0047] Similarly, when the smoke exhaust fan 1 needs to be suspended on the fire ladder, rotate the two second rods 321 forward around the two second connecting seats 22 so that the two second hooks 322 are disengaged from the fixing frame 2 and unfolded. At this time, the two second hooks 322 can be hooked onto any step on the fire ladder. After use, lift the fixing frame 2 so that the two second hooks 322 are simultaneously disengaged from the fire ladder steps, and rotate the two second rods 321 in the opposite direction around the two second connecting seats 22 so that the two second hooks 322 can be folded back.

[0048] It should be noted that when the first hook 312 hooks onto the window sill wall, the back of the fixing bracket 2 can also abut against the wall under the action of gravity, so as to more stably support the smoke exhaust unit 1; when the second hook 322 hooks onto the fire ladder steps, the back of the fixing bracket 2 can also abut against the main body of the fire ladder under the action of gravity, so as to more stably support the smoke exhaust unit 1.

[0049] On the other hand, the width of the first hook 312 is generally consistent with the thickness of the window sill wall, so it can also hook other objects with a thickness slightly smaller than the window sill wall. The width of the second hook 322 is generally consistent with the thickness of the fire ladder step, so it can also hook other objects with a thickness slightly smaller than the fire ladder step. In actual production, the first hook 312 and the second hook 322 of the corresponding size can be prepared according to the actual use scenario, so that the first hanging rod 31 and the second hanging rod 32 can hang more objects. Since there are many specific uses, they are not listed one by one in this utility model.

[0050] See appendix Figure 1 - Appendix Figure 7 The first rod body 311 is also slidably connected to the first connecting seat 21, and both ends of the first rod body 311 are threaded with first nuts 3110. Both first nuts 3110 can move along the first rod body 311 and abut against the first connecting seat 21. The second rod body 321 is also slidably connected to the second connecting seat 22, and both ends of the second rod body 321 are threaded with second nuts 3210. Both second nuts 3210 can move along the second rod body 321 and abut against the second connecting seat 22.

[0051] Specifically, after the fixing bracket 2 is installed on the windowsill, if it is necessary to adjust the height of the fixing bracket 2, the two first nuts 3110 are turned up or down along the length of the first rod 311. When the two first nuts 3110 move up along the length of the first rod 311, the first rod 311 moves down relative to the first slide, so that the position of the fixing bracket 2 moves down. When the two first nuts 3110 move down along the length of the first rod 311, the first rod 311 moves up relative to the first slide, so that the position of the fixing bracket 2 moves up.

[0052] Similarly, after the fixing bracket 2 is installed on the fire ladder, if it is necessary to adjust the height of the fixing bracket 2, the two second nuts 3210 are turned up or down along the length of the second rod 321. When the two second nuts 3210 move up along the length of the second rod 321, the second rod 321 moves down relative to the second slide, so that the position of the fixing bracket 2 moves down. When the two second nuts 3210 move down along the length of the second rod 321, the second rod 321 moves up relative to the second slide, so that the position of the fixing bracket 2 moves up.

[0053] Therefore, the above structural design allows the installation height of the mounting bracket 2 to be adjusted to adapt to various usage scenarios, further improving ease of use.

[0054] See appendix Figure 1 - Appendix Figure 4The fixed frame 2 is also equipped with a first strap 23 and a second strap 24. When the first hook 312 is folded onto the fixed frame 2, the first strap 23 can bind and fix the first hook 312. If the restriction of the first strap 23 on the first hook 312 is released, the first pole body 311 can rotate normally. When the second hook 322 is folded onto the fixed frame 2, the second strap 24 can bind and fix the second hook 322. If the restriction of the second strap 24 on the second hook 322 is released, the second pole body 321 can rotate normally. Therefore, the design of the first strap 23 and the second strap 24 serves to fix the first hook 312 and the second hook 322 respectively, which can prevent the first hook 312 and the second hook 322 from being unfolded when not in use, thus affecting the firefighters' handling and moving of the fixed frame 2.

[0055] The first strap 23 and the second strap 24 can be made of straps that can be opened and closed, such as cable ties, Velcro straps, and buckles. Due to the variety of related types, this utility model does not impose any restrictions on them.

[0056] See appendix Figure 3 - Appendix Figure 7 The present invention also includes a fastening strap 4, which is set on the fixed frame 2 and has a hook 40, which can hook the fire ladder steps.

[0057] Specifically, under normal circumstances, the fastening strap 4 is wrapped around the fixed frame 2. When the two second hanging rods 32 are simultaneously attached to the fire ladder steps, the fastening strap 4 is installed on the fixed frame 2 and hooked onto the fire ladder steps through the hook 40 to apply a downward force to the fixed frame 2. Under this structural design, the second hanging rods 32 can be effectively prevented from detaching from the fire ladder steps, thereby further improving the installation stability of the fixed frame 2 and the smoke exhaust fan body 1.

[0058] See appendix Figure 1 Appendix Figure 3 Appendix Figure 6 and attached Figure 10 The exhaust fan body 1 is rotatably mounted on the top of the fixed frame 2, and the connection between the exhaust fan body 1 and the fixed frame 2 is damped.

[0059] Specifically, when in use, the smoke exhaust unit 1 faces the interior with its front side facing the outside and its back side facing the outside, which can draw smoke and dust from the interior to the outside. During use, firefighters can also rotate the smoke exhaust unit 1 to adjust its orientation, thereby better drawing out smoke and dust from the interior. When firefighters drive the smoke exhaust unit 1 to rotate 360°, the back of the unit faces the interior and the front faces the outside, which can blow air into the interior, thereby causing the smoke and dust in the interior to overflow to the outside through other windows and gaps.

[0060] Therefore, the rotating connection design between the smoke exhaust unit 1 and the fixed frame 2 allows firefighters to adjust the orientation of the smoke exhaust unit 1 according to their needs during actual use, so as to fully adapt to various usage environments and improve ease of use; and the damping at the connection between the smoke exhaust unit 1 and the fixed frame 2 allows the smoke exhaust unit 1 to stop at the current position after rotation, making it convenient to extract or blow away smoke.

[0061] The rotating connection structure between the exhaust fan body 1 and the fixed frame 2 can vary, and this utility model does not limit it. For ease of understanding, in this embodiment, the fixed frame 2 is provided with bolts 26 on both sides. The bolts 26 rotatably pass through the fixed frame 2 and fix the exhaust fan body 1, so as to enable the rotating connection between the exhaust fan body 1 and the fixed frame 2. As for how to make the connection between the exhaust fan body 1 and the fixed frame 2 damped, the bolts 26 and the fixed frame 2 can be set as an interference fit, or a damping component can be installed at the connection between the bolts 26 and the fixed frame 2. Since there are various related methods, this utility model does not limit it.

[0062] See appendix Figure 1 - Appendix Figure 6 The bottom of the fixed frame 2 is equipped with multiple casters 25. This design improves the overall mobility and makes it convenient to move to the fire scene. The casters 25 can be ordinary wheels or wheels with braking function. This utility model does not limit this.

[0063] See appendix Figure 1 - Appendix Figure 3 The smoke exhaust fan body 1 is equipped with a mounting bracket 11 for installing a hoisting rope (not shown in the figure); when carrying out fire protection operations on high-rise buildings, this structural design makes it convenient for firefighters to use a crane to suspend the entire fire exhaust fan to the windowsill of the high-rise building without having to manually move it, which further improves the ease of use.

[0064] See appendix Figure 6 - Appendix Figure 10 The present invention also includes a control box 5, which is installed inside the fixed frame 2. The control box 5 is equipped with a main control unit 51, a power supply unit 52 and a remote control unit 53. The main control unit 51 is electrically connected to the power supply unit 52, the remote control unit 53 and the smoke exhaust machine body 1.

[0065] Specifically, the power supply unit 52 is used to supply power to the exhaust fan 1, the main control unit 51 is used to control the start and stop of the exhaust fan 1, and the remote control unit 53 can receive commands from mobile phones, remote controls, etc., to remotely control the start and stop of the exhaust fan 1.

[0066] The power supply unit 52 can be a storage battery, the main control unit 51 can be a circuit board, and the remote control unit 53 can be a remote control module. All of these products are existing products. The technology of controlling the start and stop of electrical appliances by the cooperation of the main control unit 51, the power supply unit 52 and the remote control unit 53, as well as the technology of charging the power supply unit 52, are also existing technologies. Therefore, the specific circuit structure is not described in detail in this utility model.

[0067] Furthermore, the main control unit 51, the power supply unit 52, and the remote control unit 53 can be designed independently or integrated into one unit. Manufacturers can set them up according to their needs, and this utility model does not impose any restrictions on this.

[0068] See appendix Figure 1 - Appendix Figure 6 The exhaust fan body 1 is equipped with a warning light 12, and the main control unit 51 is electrically connected to the warning light 12.

[0069] Specifically, when the smoke exhaust unit 1 is in operation, the warning light 12 can be activated through the main control unit 51 to indicate the location of the smoke exhaust unit 1 to the firefighters for easy observation; at the same time, the warning light 12 can also warn passersby to avoid them from approaching; after use, the warning light 12 can be turned off through the main control unit 51.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel fire-fighting smoke exhaust fan, comprising a smoke exhaust fan body (1), characterized in that, Also includes: A fixed frame (2) is provided, on which the exhaust fan body (1) is mounted, and the fixed frame (2) can be placed on the ground; The suspension assembly (3) includes two first hanging rods (31) and two second hanging rods (32). The two first hanging rods (31) are rotatably mounted on the outer side of the back of the fixed frame (2) and can be folded onto the fixed frame (2) or unfolded from the fixed frame (2). The two second hanging rods (32) are rotatably mounted on the inner side of the back of the fixed frame (2) and can be folded onto the fixed frame (2) or unfolded from the fixed frame (2). The two first hanging rods (31) can be simultaneously hung on the window sill wall after being unfolded, so as to suspend the fixing frame (2) and the smoke exhaust fan (1) on the window sill for use; the two second hanging rods (32) can be simultaneously hung on the fire ladder steps after being unfolded, so as to suspend the fixing frame (2) and the smoke exhaust fan (1) on the fire ladder for use.

2. The novel fire-fighting smoke exhaust fan according to claim 1, characterized in that, The fixing frame (2) has two first connecting seats (21) on the outer side of its back and two second connecting seats (22) on the inner side of its back. The first hanging rod (31) is composed of a first rod body (311) and a first hook head (312), and the first rod body (311) is rotatably mounted on the first connecting seat (21) so that the first hook head (312) can be folded on the fixed frame (2) or unfolded from the fixed frame (2); The second hanging rod (32) consists of a second rod body (321) and a second hook head (322), and the second rod body (321) is rotatably mounted on the second connecting seat (22) so that the second hook head (322) can be folded onto the fixing frame (2) or unfolded from the fixing frame (2).

3. A novel fire-fighting smoke exhaust fan according to claim 2, characterized in that, The first rod body (311) is also slidably connected to the first connecting seat (21), and both ends of the first rod body (311) are threaded with first nuts (3110). Both first nuts (3110) can move along the first rod body (311) and abut against the first connecting seat (21). The second rod (321) is also slidably connected to the second connecting seat (22), and both ends of the second rod (321) are threaded with second nuts (3210). Both second nuts (3210) can move along the second rod (321) and abut against the second connecting seat (22).

4. A novel fire-fighting smoke exhaust fan according to claim 2, characterized in that, The fixing frame (2) is also equipped with a first strap (23) and a second strap (24); when the first hook (312) is folded on the fixing frame (2), the first strap (23) can bind and fix the first hook (312); when the second hook (322) is folded on the fixing frame (2), the second strap (24) can bind and fix the second hook (322).

5. A novel fire-fighting smoke exhaust fan according to claim 1, characterized in that, It also includes a fastening strap (4), which is set on the fixing frame (2) and has a hook (40); when the two second hanging rods (32) are simultaneously attached to the fire ladder steps, the fastening strap (4) can hook the fire ladder steps through the hook (40).

6. A novel fire-fighting smoke exhaust fan according to claim 1, characterized in that, The exhaust fan body (1) is rotatably mounted on the top of the fixed frame (2), and the connection between the exhaust fan body (1) and the fixed frame (2) is damped.

7. A novel fire-fighting smoke exhaust fan according to claim 1, characterized in that, The bottom of the fixed frame (2) is equipped with multiple casters (25).

8. A novel fire-fighting smoke exhaust fan according to claim 1, characterized in that, The exhaust fan body (1) is equipped with a mounting bracket (11) for installing a hanging rope.

9. A novel fire-fighting smoke exhaust fan according to claim 1, characterized in that, It also includes a control box (5), which is installed inside the fixed frame (2), and the control box (5) is provided with a main control unit (51), a power supply unit (52) and a remote control unit (53). The main control unit (51) is electrically connected to the power supply unit (52), the remote control unit (53) and the smoke exhaust machine body (1).

10. A novel fire-fighting smoke exhaust fan according to claim 9, characterized in that, A warning light (12) is installed on the exhaust fan body (1), and the main control unit (51) is electrically connected to the warning light (12).

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