Fire-fighting smoke ventilator
By designing the mobile wheel and worm transmission structure on the fire fume exhaust machine, the flexible adjustment of the fume exhaust machine is achieved, solving the problem of insufficient flexibility caused by the design of the existing fire fume exhaust machine, and improving rescue efficiency.
Patent Information
- Application Number
- CN202421787815.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing fire fume exhaust machine is designed to be fixed on the ground during use, which lacks flexibility and adjustability, making it difficult to quickly adjust the direction and angle of the smoke exhaust, delaying the rescue opportunity.
A fire fume exhaust machine is designed, and a moving wheel, a first and second mounting plates, a rotating structure and a driving assembly are arranged on the base. The rotation of the fume exhaust machine main body can be realized through the rocker handle and worm transmission structure, so that the smoke exhaust direction and angle can be easily adjusted.
It improves the mobility and adjustability of the fire fume exhaust machine, can quickly adapt to different smoke exhaust needs and on-site conditions, reduces the time and effort of manual movement, and improves rescue efficiency.
Smart Images
Figure CN222865137U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire fighting equipment, in particular to a fire fighting smoke exhaust machine. Background Art
[0002] In fire emergency response, smoke exhauster is one of the most important equipment. Its main function is to quickly remove thick smoke at the fire scene, providing clear sight and breathing space for rescue workers and trapped persons, thereby improving rescue efficiency and safety.
[0003] Most of the existing fire smoke exhaust machines are placed on the ground when in use, which limits the flexibility and adjustability of the smoke exhaust machine. In actual operation, in order to adjust the direction and angle of smoke exhaust, it is often necessary to manually move the smoke exhaust machine, which is not only time-consuming and labor-intensive in an emergency, but may also delay rescue opportunities.
[0004] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Utility Model Content
[0005] The present application provides a fire smoke exhaust machine, which can easily adjust the smoke exhaust direction and angle of the fire smoke exhaust machine to adapt to different smoke exhaust needs and on-site conditions.
[0006] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a fire smoke exhaust fan, comprising a base, a first mounting plate, a second mounting plate, a smoke exhaust fan body, and a driving assembly, wherein a moving wheel is arranged on the base; the first mounting plate and the second mounting plate are arranged on the base, and the first mounting plate and the second mounting plate are arranged opposite to each other in a first direction; a first rotating structure is arranged on the first mounting plate, and a rotating hole is opened on the second mounting plate, and the rotating hole passes through the second mounting plate in the first direction; a second rotating structure and a rotating shaft are arranged on the smoke exhaust fan body, and the smoke exhaust fan body is rotatably connected to the first mounting structure through the cooperation of the second rotating structure and the first rotating structure. Plate, the smoke exhaust fan body is rotatably connected to the second mounting plate through the cooperation of the rotating shaft and the rotating hole, and the rotating axis of the smoke exhaust fan body is perpendicular to the first mounting plate and the second mounting plate; the driving assembly includes a connecting shaft, a worm gear, a worm, a mounting frame, and a crank; one end of the connecting shaft is fixedly connected to the rotating shaft, the central axis of the connecting shaft coincides with the central axis of the rotating shaft, the worm gear is fixedly sleeved on the connecting shaft, the worm gear is meshed with the worm, the worm is rotatably connected to the mounting frame, the mounting frame is fixedly connected to the second mounting plate, one end of the worm extends out of the mounting frame, and the crank is fixedly connected to one end of the worm; wherein the lead angle of the worm is smaller than the friction angle of the worm.
[0007] In the embodiment of the present application, a movable wheel is provided on the base, so that the mobility of the fire smoke exhaust machine can be improved, so that its position can be quickly adjusted. The operator can apply a rotational torque to the worm by shaking the crank. Since the crank is fixed to one end of the worm, the rotation of the crank is directly converted into the rotation of the worm, thereby driving the worm wheel to rotate around its own axis. The worm wheel is fixedly sleeved on the connecting shaft, so the rotation of the worm wheel will be transmitted to the rotating shaft through the connecting shaft. The rotating shaft is connected to the main body of the smoke exhaust machine. When the rotating shaft rotates, it will drive the main body of the smoke exhaust machine to rotate around its axis, thereby realizing the adjustment of the smoke exhaust angle of the fire smoke exhaust machine. At the same time, since the lead angle of the worm is smaller than the friction angle of the worm, the transmission structure formed by the worm wheel and the worm has a self-locking characteristic, so that when there is no external force, the smoke exhaust angle of the fire smoke exhaust machine can be maintained at the adjusted angle.
[0008] In some possible implementations, the other end of the connecting shaft is rotatably connected to the mounting bracket, which helps to evenly distribute the load and reduce local stress concentration, thereby improving the stability and durability of the entire system.
[0009] In some possible implementations, a plurality of fixed columns are further provided on the lower surface of the base, and the plurality of fixed columns are arranged opposite to the moving wheels. A handle is provided on the base, and the handle is located at one end of the base close to the moving wheels. In this way, when the fire smoke exhaust machine needs to be fixed, the fixed columns can be brought into contact with the ground to increase stability. When the fire smoke exhaust machine needs to be moved, it is convenient to move the fire smoke exhaust machine. Specifically, the base can be tilted by pulling the handle, so that the fixed columns are suspended in the air, and the fire smoke exhaust machine can be moved using the moving wheels.
[0010] In some possible implementations, the fixing column is a rubber column. In this way, the fixing column has good shock absorption and anti-skid effects, and can enhance the stability of the fire smoke exhaust machine in a fixed state.
[0011] In some possible implementations, the first rotating structure is a hole body, and the second rotating structure is a shaft body. In this way, the first rotating structure and the second rotating structure have simple structures and are easy to assemble.
[0012] In some possible implementations, the second rotating structure, the rotating shaft and the smoke exhaust machine body are integrally formed, so that assembly errors can be avoided, thereby making the smoke exhaust machine body more stable and reliable when rotating.
[0013] In some possible implementations, the smoke exhaust fan blades of the smoke exhaust machine body are turbofan structures. In this way, the air can generate a larger speed difference and pressure difference between the fan blades, thereby increasing the air flow speed and air volume, so that the smoke can be discharged from the room more quickly, and the smoke exhaust efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the following is a brief introduction to the drawings required for the embodiments or the prior art description. It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for the sake of clarity and ease of understanding, the sizes of some features may be deformed.
[0015] Figure 1 A schematic diagram of the structure of a fire smoke exhaust machine provided in some embodiments of the present application;
[0016] Figure 2 for Figure 1 The structural schematic diagram of the fire smoke exhaust machine shown in another viewing angle;
[0017] Figure 3 for Figure 2 An enlarged view of the circled portion of the fire smoke exhaust machine shown at A;
[0018] Figure 4 for Figure 2 The structure shown is a schematic diagram of a structure in another viewing angle and only cross-sections the second mounting plate and the mounting frame;
[0019] Figure 5 for Figure 1 The structural schematic diagram of the fire smoke exhaust machine shown in another viewing angle;
[0020] Figure 6 for Figure 5 An enlarged view of the circled portion of the fire smoke exhaust machine shown at B;
[0021] Figure 7 for Figure 1 An enlarged view of the circled portion of the fire smoke exhaust fan shown at C.
[0022] Description of reference numerals:
[0023] 1. Base; 11. Moving wheel; 12. Fixed column; 2. First mounting plate; 21. First rotating structure; 3. Second mounting plate; 31. Rotating hole; 4. Smoke exhaust machine body; 41. Second rotating structure; 42. Rotating shaft; 43. Smoke exhaust fan blades; 5. Driving assembly; 51. Connecting shaft; 52. Worm gear; 53. Worm; 54. Mounting frame; 541. Through hole; 542. Threaded hole; 55. Crank handle; 6. Handle. DETAILED DESCRIPTION
[0024] 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 of 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.
[0025] It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "horizontal", and "inner" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.
[0026] In addition, it should be noted that in the description of the present invention, 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; 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 those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] See also Figure 1-Figure 6The embodiment of the present application provides a fire smoke exhaust machine, including a base 1, a first mounting plate 2, a second mounting plate 3, a smoke exhaust machine body 4, and a driving assembly 5. The base 1 is provided with a moving wheel 11; the first mounting plate 2 and the second mounting plate 3 are arranged on the base 1, and the first mounting plate 2 and the second mounting plate 3 are arranged opposite to each other in a first direction; the first mounting plate 2 is provided with a first rotating structure 21, and the second mounting plate 3 is provided with a rotating hole 31, and the rotating hole 31 passes through the second mounting plate 3 in the first direction; the smoke exhaust machine body 4 is provided with a second rotating structure 41 and a rotating shaft 42, the smoke exhaust machine body 4 is rotatably connected to the first mounting plate 2 through the cooperation of the second rotating structure 41 and the first rotating structure 21, and the smoke exhaust machine body 4 is rotatably connected to the second mounting plate 3 through the cooperation of the rotating shaft 42 and the rotating hole 31, and the rotating axis of the smoke exhaust machine body 4 is perpendicular to the first mounting plate 2 and the second mounting plate 3; the driving assembly 5 includes a connecting shaft 51, a worm gear 52, a worm 53, a mounting bracket 54, and a crank 55; one end of the connecting shaft 51 is fixedly connected to the rotating shaft 42, and the central axis of the connecting shaft 51 coincides with the central axis of the rotating shaft 42. Exemplarily, the connecting shaft 51 and the rotating shaft 42 can be connected by welding, clamping, etc. Or the connecting shaft 51 and the rotating shaft 42 are an integrally formed part. Of course, the present application is not limited to this. In other embodiments, the connecting shaft 51 and the rotating shaft 42 can also be connected by a coupling.
[0028] The worm wheel 52 is fixedly sleeved on the connecting shaft 51. The worm wheel 52 and the connecting shaft 51 can be fixedly connected by screw connection, clamping, welding, etc. The worm wheel 52 is meshed with the worm 53, and the worm 53 is rotatably connected to the mounting frame 54, and the mounting frame 54 is fixedly connected to the second mounting plate 3. Figure 3 In the embodiment shown, the mounting frame 54 is U-shaped, and a through hole 541 is provided on the wall plate of the mounting frame 54 parallel to the second mounting plate 3, and the connecting shaft 51 is fixedly connected to the rotating shaft 42 through the through hole 541. A threaded hole 542 is provided on the mounting frame 54, and the mounting frame 54 is fixedly connected to the second mounting plate 3 by the cooperation of the bolt and the threaded hole 542. Of course, the present application is not limited to this. In other embodiments, the mounting frame 54 and the second mounting plate 3 can also be fixedly connected by means of clamping, welding, etc. One end of the worm 53 extends out of the mounting frame 54, and the crank 55 is fixedly connected to one end of the worm 53. Among them, the lead angle of the worm 53 is less than the friction angle of the worm 53. Specifically, the lead angle refers to the angle between the distance that the helix of the worm 53 advances along the axial direction in one rotation cycle and the diameter of the worm 53. The friction angle refers to the angle formed between the friction force and the normal pressure.
[0029] In this way, the mobility of the fire smoke exhaust machine can be improved by the moving wheel 11 to quickly adjust its position. The operator can apply a rotational torque to the worm 53 by shaking the crank 55. Since the crank 55 is fixed to one end of the worm 53, the rotation of the crank 55 is directly converted into the rotation of the worm 53, thereby driving the worm wheel 52 to rotate around its own axis. The worm wheel 52 is fixedly sleeved on the connecting shaft 51, so the rotation of the worm wheel 52 will be transmitted to the rotating shaft 42 through the connecting shaft 51. The rotating shaft 42 is connected to the smoke exhaust machine body 4. When the rotating shaft 42 rotates, it will drive the smoke exhaust machine body 4 to rotate around its axis, thereby realizing the adjustment of the smoke exhaust angle of the fire smoke exhaust machine. At the same time, since the lead angle of the worm 53 is smaller than the friction angle of the worm 53, the transmission structure formed by the worm wheel 52 and the worm 53 has a self-locking characteristic, so that when there is no external force, the smoke exhaust angle of the fire smoke exhaust machine can be maintained at the adjusted angle.
[0030] See also Figure 5 In some embodiments, a plurality of fixed columns 12 are further provided on the lower surface of the base 1, and the plurality of fixed columns 12 are arranged opposite to the moving wheel 11. A handle 6 is provided on the base 1, and the handle 6 is located at one end of the base 1 close to the moving wheel 11. In this way, when the fire smoke exhaust machine needs to be fixed, the fixed columns 12 can be brought into contact with the ground to increase stability. When the fire smoke exhaust machine needs to be moved, it is convenient to move the fire smoke exhaust machine. Specifically, the base 1 can be tilted by pulling the handle 6, so that the fixed columns 12 are suspended in the air, and the fire smoke exhaust machine can be moved using the moving wheel 11.
[0031] In some embodiments, the fixing column 12 is a rubber column. In this way, the fixing column 12 has good shock absorption and anti-skid effects, and can enhance the stability of the fire smoke exhaust machine in a fixed state.
[0032] See also Figure 5 In some embodiments, the smoke exhaust blades 43 of the smoke exhaust machine body 4 are turbofan structures. In this way, the air can generate a larger speed difference and pressure difference between the blades, thereby increasing the air flow speed and air volume, so that the smoke can be discharged from the room more quickly, and the smoke exhaust efficiency is improved.
[0033] See also Figure 6 In some embodiments, the other end of the connecting shaft 51 is rotatably connected to the mounting frame 54. For example, the other end of the connecting shaft 51 can be rotatably connected to the mounting frame 54 through a bearing. This helps to evenly distribute the load and reduce local stress concentration, thereby improving the stability and durability of the entire system.
[0034] See also Figure 7In some embodiments, the first rotating structure 21 is a hole body, specifically, the hole body can be a blind hole or a through hole. The second rotating structure 41 is a shaft body. In this way, the structures of the first rotating structure 21 and the second rotating structure 41 are simple and easy to assemble. Of course, the present application is not limited to this. In other embodiments, the first rotating structure 21 can also be a shaft body, and the second rotating structure 41 can also be a hole body.
[0035] In some embodiments, the second rotating structure 41, the rotating shaft 421 and the smoke exhaust machine body 4 are integrally formed. In this way, assembly errors can be avoided, so that the smoke exhaust machine body 4 can be more stable and reliable when rotating. Of course, the present application is not limited to this. In other embodiments, the second rotating structure 41 and the rotating shaft 421 can be fixedly connected to the smoke exhaust machine body 411 by welding.
[0036] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.
Claims
1. A fire smoke exhaust machine, characterized in that: include: A base (1), wherein the base (1) is provided with moving wheels (11); A first mounting plate (2); a second mounting plate (3), wherein the first mounting plate (2) and the second mounting plate (3) are arranged on the base (1), and the first mounting plate (2) and the second mounting plate (3) are arranged opposite to each other in a first direction; a first rotating structure (21) is provided on the first mounting plate (2), and a rotating hole (31) is provided on the second mounting plate (3), and the rotating hole (31) passes through the second mounting plate (3) in the first direction; A smoke exhaust machine body (4), wherein the smoke exhaust machine body (4) is provided with a second rotating structure (41) and a rotating shaft (42); the smoke exhaust machine body (4) is rotatably connected to the first mounting plate (2) through the cooperation between the second rotating structure (41) and the first rotating structure (21); the smoke exhaust machine body (4) is rotatably connected to the second mounting plate (3) through the cooperation between the rotating shaft (42) and the rotating hole (31); and the rotating axis of the smoke exhaust machine body (4) is perpendicular to the first mounting plate (2) and the second mounting plate (3); A driving assembly (5), the driving assembly (5) comprising: a connecting shaft (51), a worm wheel (52), a worm (53), a mounting frame (54), and a crank (55); one end of the connecting shaft (51) is fixedly connected to the rotating shaft (42), the central axis of the connecting shaft (51) coincides with the central axis of the rotating shaft (42), the worm wheel (52) is fixedly sleeved on the connecting shaft (51), the worm wheel (52) is meshed with the worm (53), the worm (53) is rotatably connected to the mounting frame (54), the mounting frame (54) is fixedly connected to the second mounting plate (3), one end of the worm (53) extends out of the mounting frame (54), and the crank (55) is fixedly connected to one end of the worm (53), wherein the lead angle of the worm (53) is smaller than the friction angle of the worm (53).
2. The fire smoke exhaust machine according to claim 1, characterized in that: The other end of the connecting shaft (51) is rotatably connected to the mounting bracket (54).
3. The fire smoke exhaust machine according to claim 2, characterized in that: The lower surface of the base (1) is also provided with a plurality of fixed columns (12), and the plurality of fixed columns (12) are arranged opposite to the moving wheel (11). The base (1) is provided with a handle (6), and the handle (6) is located at one end of the base (1) close to the moving wheel (11).
4. The fire smoke exhaust machine according to claim 3, characterized in that: The fixing column (12) is a rubber column.
5. The fire smoke exhaust machine according to claim 1, characterized in that: The first rotating structure (21) is a hole body, and the second rotating structure (41) is a shaft body.
6. The fire smoke exhaust machine according to claim 4, characterized in that: The second rotating structure (41), the rotating shaft (42) and the smoke exhaust machine body (4) are integrally formed parts.
7. The fire smoke exhaust machine according to claim 1, characterized in that: The smoke exhaust fan blades (43) of the smoke exhaust machine body (4) are of a turbofan structure.