A lightweight fire-fighting mobile smoke extractor

Abstract

The present invention discloses a lightweight fire-fighting mobile smoke exhaust machine, which includes a support assembly and a smoke exhaust machine body. The smoke exhaust machine body includes a protective housing and a blade drive assembly inside the protective housing. The support assembly includes a main support beam frame, and the main support beam frame includes frame-shaped frames on both sides and multiple connecting beams fixed between the frame-shaped frames on both sides. The protective housing is located between the frame-shaped frames on both sides. An adjustment assembly is provided on each frame-shaped frame. The adjustment assembly includes a base plate, a positioning pin and a movable bolt. The base plate is fixed in the inner hole of the frame-shaped frame through a support beam, and a pin hole is machined on the base plate. One end of the positioning pin is rotatably matched with the pin hole of the base plate, and the other end is connected to the protective housing. A strip-shaped arc hole is machined on the base plate, and the threaded end of the movable bolt passes through the strip-shaped arc hole and is connected to the protective housing. Based on the design concept of being lightweight, simple and easy to operate, the present invention adds a function of adjustable water mist spraying angle on the basis of the whole machine to improve the adaptability and adjustability of the whole machine to the use scenario.

Description

Technical Field

[0001] The present invention relates to the technical field of fire smoke exhaust, and more specifically, to a lightweight fire mobile smoke exhaust machine. Background Art

[0002] Fire smoke exhaust machines are applicable to high-rise buildings, underground buildings, tunnels, subways, industrial and mining enterprises and other places, and play the role of smoke exhaust, temperature reduction and radiation reduction. The existing mobile fire smoke exhaust machines do not have the function of adjustable water mist spraying angle during operation, the adaptability or adjustability to the use scenarios is poor, or the structure and method of water mist spraying adjustment are too complex, which does not conform to the design concept of being light, simple and easy to operate. Summary of the Invention

[0003] The purpose of the present invention is to provide a lightweight fire mobile smoke exhaust machine, which adds the function of adjustable water mist spraying angle on the basis of the whole machine based on the design concept of being light, simple and easy to operate, so as to improve the adaptability and adjustability of the whole machine to the use scenarios.

[0004] An embodiment of the present invention is implemented as follows: A lightweight fire mobile smoke exhaust machine includes a bracket assembly and a smoke exhaust body installed on the bracket assembly. The smoke exhaust body includes a protective shell and a blade drive assembly arranged inside the protective shell. The bracket assembly includes a main support beam frame and a roller assembly. The main support beam frame includes frame-shaped frames on both sides and multiple connecting beams fixed between the frame-shaped frames on both sides. The protective shell is located between the frame-shaped frames on both sides. An adjustment assembly for adjusting the inclination angle of the protective shell is provided on each frame-shaped frame. The adjustment assembly includes a base plate, a positioning pin and a movable bolt. The base plate is fixed in the inner hole of the frame-shaped frame through a support beam, and a pin hole is machined on the base plate. One end of the positioning pin is rotatably matched with the pin hole of the base plate, and the other end is connected to the protective shell. A strip-shaped arc hole is machined on the base plate, and the center of the strip-shaped arc hole coincides with the center of the pin hole. The threaded end of the movable bolt passes through the strip-shaped arc hole and is connected to the protective shell. The roller assembly is arranged between the front sides or the rear sides of the two frame-shaped frames.

[0005] Further, the frame-shaped frame includes a rectangular frame formed by splicing two cross beams and two vertical beams. The connecting beam is fixed between the cross beams of the two frame-shaped frames, and at least one connecting block is arranged on each cross beam.

[0006] Further, the bracket assembly further includes a handle assembly. The handle assembly is located between the two frame-shaped frames above the roller assembly. The handle assembly includes a hand-held rod and two sliding cylinders. The two sliding cylinders are respectively fixed on the vertical beams on the same side of the two frame-shaped frames. The hand-held rod is a U-shaped rod, and the two ends of the hand-held rod are slidably arranged in the two sliding cylinders. A limit cover for preventing the end of the hand-held rod from slipping out is arranged at the end of the sliding cylinder.

[0007] Further, the roller assembly includes two rollers. Wheel carriers are fixedly provided at the lower parts of the vertical beams on the same side of the two frame-shaped frames. The two rollers are respectively rotatably mounted on the two wheel carriers, and the horizontal height of the bottom rim of the roller is higher than the horizontal height of the bottom cross beam inside the corresponding frame-shaped frame.

[0008] Further, the blade driving assembly includes a driving motor and a blade assembly mounted on the output end of the driving motor. The protective housing includes a cylindrical shell and an adjusting mechanism. Connecting bars are provided on both sides of the outer ring wall of the cylindrical shell. The connecting bars are interconnected with the positioning pins and movable bolts on the same side. One end of the cylindrical shell is formed with a conical diameter-expanded cylinder body. The diameter-expanded cylinder body and the cylindrical shell are coaxially distributed, and the diameter-expanded end of the diameter-expanded cylinder body is located on the side away from the cylindrical shell. The adjusting mechanism is arranged between the inner wall of the cylindrical shell and the driving motor. The adjusting mechanism includes two positioning blocks and a sliding rod fixed between the two positioning blocks. One side of the positioning block is fixedly connected to the inner wall of the cylindrical shell. A sliding sleeve slidably matched with the sliding rod is provided on the side wall of the driving motor. A push rod mechanism is mounted on the cylindrical shell and can be used to move the driving motor close to or away from the diameter-expanded cylinder body along the cylindrical shell.

[0009] Further, a control box is provided on the driving motor. The push rod mechanism is mounted between the control box and the inner wall of the cylindrical shell. The push rod mechanism includes a first limiting plate, a second limiting plate, and an electric push rod electrically connected to the control box. The first limiting plate is fixed on the control box, the second limiting plate is fixed on the inner wall of the cylindrical shell, and the electric push rod is mounted between the first limiting plate and the second limiting plate.

[0010] Further, the driving motor includes a housing and a first shaft sleeve and a second shaft sleeve mounted at both ends of the housing. A plurality of flow channel holes are machined in the housing along the direction from the first shaft sleeve to the second shaft sleeve. A plurality of water passing holes are machined on the outer end faces of the first shaft sleeve and the second shaft sleeve. Each water passing hole is at least communicated with one of the flow channel holes. A connecting cover is provided at the outer end of the first shaft sleeve. A water injection cavity is formed between one side of the connecting cover and all the water passing holes on the first shaft sleeve, and a water inlet hole communicated with its water injection cavity is machined on the connecting cover.

[0011] Further, the driving motor further includes a main shaft. The main shaft is arranged in the housing. The first shaft sleeve and the second shaft sleeve are respectively rotatably sleeved at both ends of the main shaft, and seals are formed between the first shaft sleeve and the second shaft sleeve and the housing. A sealing end cover is provided between the second shaft sleeve and the main shaft.

[0012] Further, the blade assembly includes a connecting head and a fixing ring. The connecting head is sleeved on the end of the main shaft away from the first shaft sleeve, and the connecting head is located in the inner hole of the fixing ring. A plurality of blades are fixed between the fixing ring and the connecting head.

[0013] Furthermore, transition sinking grooves are machined on the side ring walls of the first shaft sleeve and the second shaft sleeve. All the water passing holes on the first shaft sleeve communicate with its transition sinking groove, and the transition sinking groove on the first shaft sleeve communicates with all the flow passage holes on the outer shell. All the water passing holes on the second shaft sleeve communicate with its transition sinking groove, and the transition sinking groove on the second shaft sleeve communicates with all the flow passage holes on the outer shell.

[0014] The beneficial effects of the embodiments of the present invention are as follows:

[0015] The smoke exhaust machine provided by the embodiments of the present invention is provided with adjustment components on the frame-shaped frames on both sides of the protective outer shell. By easily changing the position of the movable bolt, the working angle of the entire smoke exhaust machine body can be adjusted, so that the water mist ejected by the smoke exhaust machine body during operation can achieve the purpose of easily changing the spraying angle, in line with the design concept of being easy, convenient, simple and easy to operate, and can improve the adaptability, adjustability and operability of the whole machine in use scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 is a schematic structural diagram of the smoke exhaust machine provided by the embodiments of the present invention;

[0018] Figure 2 is Figure 1 a schematic structural diagram of the smoke exhaust machine shown from another perspective;

[0019] Figure 3 is a schematic structural diagram of the bracket assembly provided by the embodiments of the present invention;

[0020] Figure 4 is a schematic structural diagram of the smoke exhaust machine body provided by the embodiments of the present invention;

[0021] Figure 5 is a schematic structural diagram of the smoke exhaust machine body provided by the embodiments of the present invention without the protective outer shell;

[0022] Figure 6 is a schematic structural diagram of the blade drive assembly provided by the embodiments of the present invention;

[0023] Figure 7 is a schematic internal structural diagram of the drive motor provided by the embodiments of the present invention.

[0024] Icons: 1 - Bracket assembly; 101 - Main support beam frame; 102 - Adjustment component; 103 - Portable rod; 104 - Sliding cylinder; 105 - Roller assembly; 1011 - Cross beam; 1012 - Vertical beam; 1013 - Connecting beam; 1014 - Connecting block; 1021 - Horizontal support beam; 1022 - Vertical support beam; 1023 - Substrate; 1024 - Strip-shaped arc hole; 1025 - Movable bolt; 1026 - Positioning pin; 1051 - Roller; 1052 - Wheel frame; 2 - Blade drive assembly; 201 - Drive motor; 202 - Control box; 203 - Connector; 204 - Blade; 205 - Fixed ring; 206 - Sliding sleeve; 207 - First limit plate; 2011 - Outer shell; 2012 - Main shaft; 2013 - First bushing; 2014 - Second bushing; 2015 - Sealing end cover; 2016 - Connecting cover; 2017 - Water passing hole; 2018 - Transition sinking groove; 2019 - Flow channel hole; 3 - Protection housing; 301 - Cylindrical shell; 302 - Expanded diameter cylinder; 303 - Protection net; 304 - Positioning block; 305 - Slide bar; 306 - Electric push rod; 307 - Second limit plate; 308 - Connecting strip. Detailed implementation manners

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0027] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0029] In addition, the terms "parallel", "perpendicular", etc. do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly inclined. For example, "parallel" only means that its direction is more parallel relative to "perpendicular", and does not mean that the structure must be completely parallel, but can be slightly inclined.

[0030] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] Terms such as "substantially" and "basically" are intended to indicate that the relevant content does not require absolute precision, but can have a certain deviation. For example, "substantially equal" does not only mean absolute equality. Since it is difficult to achieve absolute "equality" during actual production and operation processes, there is generally a certain deviation. Therefore, in addition to absolute equality, "substantially equal" also includes the above-mentioned situations with a certain deviation. Taking this as an example, in other cases, unless otherwise specified, terms such as "substantially" and "basically" have meanings similar to the above.

[0032] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" 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 directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] Embodiment

[0034] Please refer to Figures 1 to 3, a lightweight fire-fighting mobile smoke exhaust fan provided in this embodiment includes a bracket assembly 1 and a smoke exhaust fan body installed on the bracket assembly 1. The smoke exhaust fan body includes a protective housing 3 and a blade drive assembly 2 arranged inside the protective housing 3. The entire smoke exhaust fan is mainly composed of these three parts, and is designed based on the design concept of being lightweight, simple and easy to operate, so that the smoke exhaust fan body on the bracket assembly 1 has the function of easily adjusting the angle, ensuring that the water mist ejected by the smoke exhaust fan body during operation can be freely adjusted within a certain angle range, thereby improving the adaptability, adjustability and operability of the entire smoke exhaust fan in different usage scenarios.

[0035] In this embodiment, the bracket assembly 1 includes a main support beam frame 101, a roller assembly 105 and a handle assembly. The main support beam frame 101 is mainly used to support the smoke exhaust fan body and to integrate the roller assembly 105 and the handle assembly. The main support beam frame 101 includes frame-shaped structures on both sides and multiple connecting beams 1013 fixed between the frame-shaped structures on both sides. The protective housing 3 is located between the frame-shaped structures on both sides. The frame-shaped structure refers to a bracket in the shape of a frame, which can be a triangular frame, a quadrangular frame, a pentagonal frame or even a frame with more corners, as long as it conforms to the definition of a frame (a closed three-dimensional ring). Of course, it can be a flat frame or an uneven frame. For the sake of product aesthetics and easier processing, the frame here is preferably a flat rectangular frame, that is, the frame-shaped structure is spliced by two cross beams 1011 and two vertical beams 1012. The splicing method can be insertion, screwing or welding. The two cross beams 1011 and the two vertical beams 1012 are spliced into a roughly rectangular frame shape, and only the corners are connected by bent pipes to prevent scratches or cuts caused by sharp corners or right angles. The two cross beams 1011 are respectively located on the upper and lower sides of the whole in the use state. The connecting beam 1013 is fixed between the cross beams 1011 of the two frame-shaped structures to play a role in fixing the two frame-shaped structures to each other. In this embodiment, there are four connecting beams 1013, and the four connecting beams 1013 are evenly divided into two groups, that is, two in each group. The two groups of connecting beams 1013 are respectively located between the two cross beams 1011 of the two frame-shaped structures. For a single group of connecting beams 1013, the two connecting beams 1013 in each group of connecting beams 1013 are respectively fixed between the front and rear ends of the cross beams 1011 on both sides, and the fixing method can be one of welding, screwing, insertion or buckling.

[0036] The main support beam frame 101 framed by two cross beams 1011, two vertical beams 1012 and four connecting beams 1013 is not only simplified, lightweight and aesthetic, meeting the overall design concept of being portable and simple, but also can ensure good support and bearing strength. In this embodiment, two connecting blocks 1014 are provided on each cross beam 1011, and the two connecting blocks 1014 are respectively located at positions close to the two ends of the cross beam 1011. The connecting blocks 1014 mainly play a connecting role. That is, when multiple main support beam frames 101 are arranged side by side or juxtaposed, the adjacent frame-shaped frames can be stably connected together through the connecting blocks 1014, so as to form a smoke exhaust wind array composed of multiple smoke exhaust machines, so as to adapt to large-area smoke exhaust and cooling occasions. Specifically, the connecting block 1014 is processed with horizontal and vertical threaded through holes, and the horizontal threaded through hole and the vertical threaded through hole are not on the same plane to avoid mutual interference; the horizontal threaded through holes between adjacent connecting blocks 1014 can be connected together by long bolts (matched with nuts), so as to achieve the purpose of connecting adjacent frame-shaped frames in a side-by-side distribution, and the vertical threaded through holes between adjacent connecting blocks 1014 can be connected together by long bolts (matched with nuts), so as to achieve the purpose of connecting adjacent frame-shaped frames in a juxtaposed distribution. In addition, a rubber skin layer is bonded on the surface of the connecting block 1014 to provide greater friction and better buffering effect.

[0037] In order to achieve the purpose of easily adjusting the smoke exhaust machine to conform to the design concept of simplicity and easy operation, an adjustment component 102 is provided on each frame. The adjustment component 102 is used to adjust the inclination angle of the protective housing 3. The adjustment component 102 includes a base plate 1023, a positioning pin 1026 and a movable bolt 1025. The base plate 1023 is fixed in the inner hole of the frame through a support beam. The number and form of the support beams only need to meet the requirement that the base plate 1023 can be stably fixed in the frame-shaped hole of the frame. A pin hole is machined on the base plate 1023. One end of the positioning pin 1026 is rotatably matched with the pin hole of the base plate 1023. The rotatable match means that one end of the positioning pin 1026 rotatably passes through the pin hole, and the difference between the diameter of the positioning pin 1026 and the diameter of the pin hole is less than 1 mm and can achieve the purpose of stable rotation. The other end of the positioning pin 1026 is connected to the protective housing 3. The connection method can be snap connection, plug connection, screw connection, locking connection or welding. However, for the sake of easy disassembly and assembly, screw connection is preferably used here. In addition, a limit cap is provided at one end of the positioning pin 1026 away from the protective housing 3 to prevent the positioning pin 1026 from falling off the base plate 1023. A strip-shaped arc hole 1024 is machined on the base plate 1023. The center of the strip-shaped arc hole 1024 coincides with the center of the pin hole. The coincidence of the centers here not only refers to the coincidence on the plane, but more importantly, the complete coincidence in three dimensions, that is, it means that with the pin hole as the center and the radius of the strip-shaped arc hole 1024 as the radius, the strip-shaped arc hole 1024 is drawn. At this time, the center of the strip-shaped arc hole 1024 is the center of the pin hole. The threaded end of the movable bolt 1025 passes through the strip-shaped arc hole 1024 and can be screwed to the smoke exhaust machine housing. When it is necessary to adjust the working angle of the smoke exhaust machine, loosen the movable bolt 1025 so that there is a certain distance (not more than 10 mm) between its nut and the base plate 1023, and slide the movable bolt 1025 in the strip-shaped arc hole 1024 to adjust the working angle of the protective housing 3. After adjustment, tighten the movable bolt 1025 to make it press tightly against the base plate 1023, so as to ensure the stability of the smoke exhaust machine body. This process is very simple, fast and easy to operate. Of course, a friction layer can be bonded to the side of the nut of the movable bolt 1025 close to the base plate 1023 to increase the friction pressing force.

[0038] For the purpose of achieving overall simplification and lightweight, in this embodiment, a single-sided frame and its adjustment component 102 are taken as an example for illustration. A vertical support beam 1022 is fixed between the middles of the two cross beams 1011 of the frame. A horizontal support beam 1021 is fixed between the middle of the vertical support beam 1022 and the vertical beam 1012 at the air (mist) outlet end away from the smoke exhaust body inside the frame. The substrate 1023 is a sector plate. The two sides of the central angle of the substrate 1023 are respectively fixedly welded to the two sides of the lower right angle formed by the vertical support beam 1022 and the horizontal support beam 1021, ensuring the installation stability of the substrate 1023 and the adjustment convenience of the smoke exhaust machine in a better and more stable structural form, which conforms to the lightweight and simplification design concept of this application.

[0039] To achieve the function of convenient carrying by the user or overall easy movement, the handle component and the roller component 105 are both arranged between the front sides or the rear sides of the two frames. When the air outlet end of the smoke exhaust body is the front end, the handle component and the roller component 105 are located between the rear sides of the two frames, that is, the positions of the handle component and the roller component 105 are on the side opposite to the air outlet end of the smoke exhaust body. The handle component is located above the roller component 105. The handle component includes a hand-held rod 103 and two sliding cylinders 104. The two sliding cylinders 104 are respectively fixedly welded to the vertical beams 1012 on the same side of the two frames, and the sliding cylinders 104 are parallel to the vertical beams 1012. The hand-held rod 103 is a U-shaped rod or in the form of a U-shaped rod with other supporting rods added. The two ends of the hand-held rod 103 are respectively slidably arranged in the two sliding cylinders 104. A limit cover for preventing the end of the hand-held rod 103 from sliding out is arranged at the end of the sliding cylinder 104. Specifically, an enlarged diameter ring is processed at the bottom end of the end of the hand-held rod 103 located inside the sliding cylinder 104. The limit cover is mainly used to limit the sliding out of the enlarged diameter ring, resulting in the hand-held rod 103 detaching from the sliding cylinder 104. The entire hand-held rod 103 and the two sliding cylinders 104 are combined into a structural form similar to a hand-pulled suitcase. The roller component 105 includes two rollers 1051. Wheel frames 1052 are respectively fixed to the lower parts of the vertical beams 1012 on the same side of the two frames. The two rollers 1051 are respectively rotatably installed on the two wheel frames 1052 through bearings, so as to ensure that the entire main support beam frame 101 has the function of lifting and moving.

[0040] In this embodiment, the structural form of the wheel bracket 1052 is not limited, as long as it can meet the requirement of facilitating the rotatable installation of the roller 1051. The wheel bracket 1052 is welded to the bottom side wall of the vertical beam 1012. Preferably, both wheel brackets 1052 are located on the side where the two vertical beams 1012 are close to each other, which can play a certain role in protecting and avoiding accidental collision of the wheel bracket 1052 with an external structure. The horizontal height of the bottom rim of the roller 1051 is higher than the horizontal height of the bottom cross beam 1011 inside the frame. That is to say, when the entire frame is placed flat, the roller 1051 does not touch the ground, so as to ensure the stability of the frame during use. When the frame needs to have a moving function, lift the hand lever 103 upward and pull the pull rod obliquely, so that the entire main support beam frame 101 is tilted at a certain angle, so that the roller 1051 touches the ground and the frame is separated from the ground, and the purpose of lifting and moving can be achieved. In order to enable the roller 1051 to easily or quickly touch the ground, the height difference between the bottom rim of the roller 1051 and the bottom cross beam 1011 inside the frame ranges from 0 to 10 cm, and is generally preferably 3 cm. The specific height difference depends on the size of the entire frame. When the frame is larger, the height difference can be appropriately increased, as long as it conforms to the inclination angle of the human height pulling habit.

[0041] The entire protective shell 3 has the function of adjustable tilt angle, that is to say, the sprayed water mist can adjust the spraying tilt angle. In order to enable the sprayed water mist to achieve the purpose of adjustable spraying range and shooting range, please refer to Figure 4 and Figure 5, the blade drive assembly 2 mainly drives the blades to rotate to form a directional wind force and spray water mist. The water flow is first decomposed into fine water droplets through high-speed centrifugal motion, and then with the help of the blades, the water droplets are formed into water mist and finally the water mist is blown to a certain place. Specifically, the blade drive assembly 2 includes a drive motor 201 and a blade assembly installed at the output end of the drive motor 201. The protective housing 3 includes a cylindrical housing 301 and an adjustment mechanism. The cylindrical housing 301 can be square cylindrical, cylindrical or other regular and substantially regular cylindrical shapes. Here, a cylindrical shape is adopted. On both sides of the outer ring wall of the cylindrical housing 301, connecting strips 308 are provided. The positions of the connecting strips 308 on both sides correspond to the positions of the adjustment components 102 on both sides. Each connecting strip 308 on each side is connected (screwed) to the positioning pin 1026 and the movable bolt 1025 on the same side. One end of the cylindrical housing 301 is formed with a conical diameter-expanded cylinder 302. Preferably, the diameter-expanded cylinder 302 is substantially trumpet-shaped. The diameter-expanded cylinder 302 is coaxially distributed with the cylindrical housing 301, and the diameter-expanded end, i.e., the large mouth end, of the diameter-expanded cylinder 302 is located on the side away from the cylindrical housing 301. The diameter-reduced end, i.e., the small mouth end, of the diameter-expanded cylinder 302 has the same diameter as the cylindrical housing 301 and is connected by a smooth transition. This composition form of the protective housing 3 provides the basic structural conditions for the diffusion of water mist. A protective net 303 is embedded at the diameter-expanded end of the diameter-expanded cylinder 302. The protective net 303 has two functions. One is to play a protective role to prevent external objects from approaching the high-speed rotating blade assembly. The other is to cause the water mist to form an impact again when spraying and act into smaller water droplet shapes. The protective net 303 can adopt a common mesh shape. Here, a form in which a plurality of concentric rings are fixed to each other by multiple connecting rods is adopted. The multiple connecting rods are arranged circumferentially evenly around the center of the innermost concentric ring.

[0042] The adjustment mechanism is arranged between the inner wall of the cylindrical shell 301 and the driving motor 201. In this embodiment, there are two groups of adjustment mechanisms, which are respectively located between the two sides of the driving motor 201 and the inner wall of the cylindrical shell 301, so as to ensure the adjustment stability of the driving motor 201. Taking a single group of adjustment mechanisms as an example for description, the adjustment mechanism includes two positioning blocks 304 and a sliding rod 305 fixed between the two positioning blocks 304. One side of the positioning block 304 is fixedly connected to the inner wall of the cylindrical shell 301, and the fixed connection method is screw connection. In order for the positioning block 304 to better fit the inner wall of the cylindrical shell 301, the side of the positioning block 304 away from the driving motor 201 is an outwardly convex arc surface, and this arc surface can better fit the inner wall of the cylindrical shell 301. A sliding sleeve 206 that is slidably matched with the sliding rod 305 is arranged on the side wall of the driving motor 201, and the driving motor 201 is slidably connected to the sliding rod 305 through this sliding sleeve 206. When the driving motor 201 approaches the diameter-expanded cylinder 302, the range where the water mist can spread increases with the inner cavity shape of the diameter-expanded cylinder 302, so that the finally water mist blown out by the wind forms a scattered state in the diameter-expanded cylinder 302, and finally achieves the purpose of a larger spraying range, a correspondingly shorter shooting range (due to the resistance effect) but a larger acting surface; on the contrary, when the driving motor 201 moves away from the diameter-expanded cylinder 302, the range where the water mist can spread hardly changes in the cylindrical shell 301 (converging state), so that the spraying of the finally water mist blown out by the wind is more concentrated and the shooting range is correspondingly longer. On the basis of being able to adjust the spraying angle of the water mist, the spraying range and shooting range of the water mist can also be adjusted, and the adaptability to the use occasion is stronger and the function is more powerful.

[0043] In order to improve the degree of automation, a push rod mechanism is installed on the cylindrical shell 301, which can be used to make the driving motor 201 slide close to or away from the diameter-expanded cylinder 302 along the cylindrical shell 301. Specifically, a control box 202 is arranged on the driving motor 201, and the push rod mechanism is installed between the control box 202 and the inner wall of the cylindrical shell 301. The push rod mechanism includes a first limit plate 207, a second limit plate 307 and an electric push rod 306 electrically connected to the control box 202. The first limit plate 207 is fixed on the control box 202, and the second limit plate 307 is fixed on the inner wall of the cylindrical shell 301. The fixing method here can be any one of snap connection, screw connection or welding. The electric push rod 306 is installed between the first limit plate 207 and the second limit plate 307. By controlling the extension or shortening of the electric push rod 306, the driving motor 201 can be controlled to slide back and forth on the sliding rod 305, so as to achieve the purpose of automatically approaching or moving away from the diameter-expanded cylinder 302.

[0044] Since the blade drive assembly 2 is in a high-temperature flue gas environment, external high temperature and internal high temperature often cause the driving motor 201 to burn out. In order to be able to cool and protect the driving motor 201 in time, please refer to Figure 6 andFigure 7 , the drive motor 201 includes the main structure of the motor, namely the main shaft 2012, the housing 2011, the rotor and the stator. The housing 2011 is a generally cylindrical shell. In addition to the sliding sleeve 206 being machined on its outer wall, a number of heat dissipation fins are also machined on its outer ring wall. The control box 202 is fixed on the housing 2011. The main shaft 2012 is coaxially arranged in the inner hole of the housing 2011, and one end of the main shaft 2012 extends out of the housing 2011 and serves as the output end of the entire drive motor 201. In order to provide slewing bearing for the main shaft 2012, a first shaft sleeve 2013 and a second shaft sleeve 2014 are respectively installed at both ends of the housing 2011. The first shaft sleeve 2013 and the second shaft sleeve 2014 are respectively rotatably sleeved on both ends of the main shaft 2012 located inside the housing 2011 through bearings, and both the first shaft sleeve 2013 and the second shaft sleeve 2014 form a seal between the main shaft 2012 and the housing 2011. This sealing method can be achieved by adding sealing structures such as sealing sleeves or sealing flanges, or can also be achieved by matching the shape of itself and filling the sealing ring, so as to ensure good sealing performance inside the housing 2011.

[0045] In this embodiment, the second shaft sleeve 2014 is generally in the form of a flange. The outer ring wall of the reduced-diameter end of the second shaft sleeve 2014 is matched with the inner hole wall of the housing 2011 and is sealed with the assistance of a sealing ring. The inner hole of the reduced-diameter end of the second shaft sleeve 2014 is rotatably matched with the main shaft 2012 through a bearing. The inner end face of the enlarged-diameter end of the second shaft sleeve 2014 is closely attached to the end face of the housing 2011, and a sealing end cover 2015 is sleeved between the inner hole of the enlarged-diameter end of the second shaft sleeve 2014 and the main shaft 2012. The function of the sealing end cover 2015 is, firstly, to increase the sealing performance between the second shaft sleeve 2014 and the main shaft 2012, and secondly, to increase the stability of the second shaft sleeve 2014 installed between the housing 2011 and the main shaft 2012. The first shaft sleeve 2013 is generally in the form of a cover. The first shaft sleeve 2013 is buckled at the port of the housing 2011, and by setting a sealing ring between the first shaft sleeve 2013 and the housing 2011, a good sealing effect can be achieved by combining with the self-sealing performance of the first shaft sleeve 2013. The inner hole of the first shaft sleeve 2013 and the main shaft 2012 are rotatably connected through a bearing.

[0046] Since the entire drive motor 201 has good sealing performance, it will affect the internal heat dissipation performance of the entire drive motor 201. Especially in a high-temperature flue gas environment, once the drive motor 201 runs continuously at high speed, the probability of its burnout will increase greatly. Therefore, timely and effective cooling protection measures need to be taken for the drive motor 201. A number of flow channel holes 2019 are machined in the housing 2011 and are arranged along the direction from the first bushing 2013 to the second bushing 2014. Preferably, the direction of each flow channel hole 2019 is parallel to the axial direction of the main shaft 2012, and a number of flow channel holes 2019 are evenly distributed circumferentially around the central axis of the main shaft 2012. A number of water passing holes 2017 are machined on the outer end faces of the first bushing 2013 and the second bushing 2014. Here, the outer end face refers to the end face of the corresponding first bushing 2013 or second bushing 2014 away from the rotor; the water passing holes 2017 on the first bushing 2013 are evenly circumferentially distributed about the center of the outer end face of the first bushing 2013. Similarly, the water passing holes 2017 on the second bushing 2014 are evenly circumferentially distributed about the center of the outer end face of the second bushing 2014. Each water passing hole 2017 on the first bushing 2013 and the second bushing 2014 is at least connected to one of the flow channel holes 2019, that is, it means that one end of the water passing hole 2017 on either the first bushing 2013 or the second bushing 2014 is connected to one or more flow channel holes 2019 on the housing 2011. In this way, the smoothness of the entire water flow channel can be ensured. The cooling water flows in from the water passing holes 2017 at the first bushing 2013, passes through one or more of the flow channel holes 2019, and then flows out from the water passing holes 2017 at the second bushing 2014 respectively. This not only realizes the transportation of water flow, but also can timely cool and dissipate heat from the housing 2011, especially at the stator structure. Sufficient cooling and temperature reduction measures are necessary.

[0047] In another embodiment, the number of water passing holes 2017 on the first bushing 2013 and the second bushing 2014 is equal and is equal to the number of flow channel holes 2019 on the entire housing 2011. The water passing hole 2017 on a single first bushing 2013, a single flow channel hole 2019, and the water passing hole 2017 on a single second bushing 2014 form a set of flow channels. This distribution method of the water flow channels is not only conducive to processing, but each water flow channel is independent and not prone to common blockage. In this embodiment, transition sinking grooves 2018 are machined on the side ring walls of the first bushing 2013 and the second bushing 2014. The transition sinking groove 2018 is a sinking groove machined on the corresponding side ring wall of the bushing. All the water passing holes 2017 on the first bushing 2013 communicate with its transition sinking groove 2018. The transition sinking grooves 2018 on the first bushing 2013 communicate with all the flow channel holes 2019 on the housing 2011 through small holes. Similarly, all the water passing holes 2017 on the second bushing 2014 communicate with its transition sinking groove 2018. The transition sinking grooves 2018 on the second bushing 2014 communicate with all the flow channel holes 2019 on the housing 2011 through small holes. In this way, it is not necessary to limit the specific number of the water passing holes 2017 on the first bushing 2013 and the second bushing 2014, nor to limit the specific number of the flow channel holes 2019, and all the water passing holes 2017 can be made to communicate with all the flow channel holes 2019, thereby allowing multiple forms of selectivity in the processing quantity and also playing a good role in preventing blockage.

[0048] In order to enable external cooling water to smoothly enter all the water passing holes 2017 on the first shaft sleeve 2013, a counterbore is machined on the outer end face of the first shaft sleeve 2013, and all the water passing holes 2017 on the first shaft sleeve 2013 are located within the counterbore. A connecting cover 2016 is provided at the outer end of the first shaft sleeve 2013. One side of the connecting cover 2016 is inserted and matched with the counterbore through an annular convex edge and sealed with a sealing ring. An injection cavity is formed between the inner side of the connecting cover 2016 and all the water passing holes 2017 on the first shaft sleeve 2013, that is, an injection cavity is formed between the counterbore and the connecting cover 2016. The injection cavity is communicated with all the water passing holes 2017 on the first shaft sleeve 2013. An inlet hole communicated with its injection cavity is machined on the connecting cover 2016, and an external water pipe is communicated with the inlet hole, so that external cooling water can smoothly flow into all the water passing holes 2017 on the first shaft sleeve 2013. The end of the water passing hole 2017 on the second shaft sleeve 2014 far from the flow passage hole 2019 can be conical, ensuring that the sprayed water flow is thinner. The high-pressure water flow impacts on the blade assembly. On the one hand, it can increase the kinetic energy of the blade assembly. On the other hand, water mist is formed under the impact, and then it is blown away by the rotating wind force. In another embodiment, a sprayer is provided in each water passing hole 2017 on the second shaft sleeve 2014, so that water mist is formed when the water flow is sprayed, and the sprayed water mist can be directed to remove smoke and dust under the action of the blade assembly. Returning to this embodiment, the blade assembly includes a connecting head 203 and a fixing ring 205. The connecting head 203 is sleeved on the end (output end) of the main shaft 2012 far from the first shaft sleeve 2013, and the connecting head 203 is located in the inner hole of the fixing ring 205. Preferably, the cylindrical connecting head 203 and the fixing ring 205 are coaxially distributed. A plurality of blades 204 are welded and fixed between the fixing ring 205 and the connecting head 203. The sprayed water mist is directly opposite to the high-speed rotating blades 204, so that it can be gathered and blown out under the action of the blades 204, and targeted smoke removal and temperature reduction are carried out at the high-temperature flue gas area.

[0049] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and the present invention omits the description of well-known components and processing technologies and processes to avoid unnecessarily limiting the present invention.

Claims

1. A lightweight fire-fighting mobile smoke exhaust machine, characterized in that, it includes a bracket assembly and a smoke exhaust machine body installed on the bracket assembly. The smoke exhaust machine body includes a protective shell and a blade drive assembly arranged inside the protective shell. The bracket assembly includes a main support beam frame and a roller assembly. The main support beam frame includes frame-shaped frames on both sides and multiple connecting beams fixed between the frame-shaped frames on both sides. The protective shell is located between the frame-shaped frames on both sides. An adjusting assembly for adjusting the inclination angle of the protective shell is provided on each frame-shaped frame. The adjusting assembly includes a base plate, a positioning pin, and a movable bolt. The base plate is fixed in the inner hole of the frame-shaped frame through a support beam, and a pin hole is machined on the base plate. One end of the positioning pin is rotatably matched with the pin hole of the base plate, and the other end is connected to the protective shell. A strip-shaped arc hole is machined on the base plate, and the center of the strip-shaped arc hole coincides with the center of the pin hole. The threaded end of the movable bolt passes through the strip-shaped arc hole and is connected to the protective shell. The roller assembly is arranged between the front sides or the rear sides of the two frame-shaped frames; The frame-shaped frame includes a rectangular frame formed by splicing two cross beams and two vertical beams. The connecting beam is fixed between the cross beams of the two frame-shaped frames. At least one connecting block is arranged on each cross beam; The bracket assembly further includes a handle assembly. The handle assembly is located between the two frame-shaped frames above the roller assembly. The handle assembly includes a hand-held rod and two sliding cylinders. The two sliding cylinders are respectively fixed on the vertical beams on the same side of the two frame-shaped frames. The hand-held rod is a U-shaped rod, and the two ends of the hand-held rod are slidably arranged in the two sliding cylinders. A limit cover for preventing the ends of the hand-held rod from slipping out is arranged at the end of the sliding cylinder; The roller assembly includes two rollers. Wheel frames are fixed at the lower parts of the vertical beams on the same side of the two frame-shaped frames. The two rollers are respectively rotatably installed on the two wheel frames. The horizontal height of the bottom wheel rim of the roller is higher than the horizontal height of the inner bottom cross beam of the frame-shaped frame where it is located; The blade drive assembly includes a drive motor and a blade assembly installed at the output end of the drive motor. The protective shell includes a cylindrical shell and an adjusting mechanism. Connecting strips are arranged on both sides of the outer ring wall of the cylindrical shell. The connecting strips are connected to the positioning pins and movable bolts on the same side. One end of the cylindrical shell is formed with a conical diameter-expanded cylinder body. The diameter-expanded cylinder body and the cylindrical shell are coaxially distributed, and the diameter-expanded end of the diameter-expanded cylinder body is located on the side away from the cylindrical shell. The adjusting mechanism is arranged between the inner wall of the cylindrical shell and the drive motor. The adjusting mechanism includes two positioning blocks and a sliding rod fixed between the two positioning blocks. One side of the positioning block is fixedly connected to the inner wall of the cylindrical shell. A sliding sleeve slidably matched with the sliding rod is arranged on the side wall of the drive motor. A push rod mechanism is installed on the cylindrical shell and can be used to move the drive motor along the cylindrical shell closer to or away from the diameter-expanded cylinder body.

2. The lightweight fire-fighting mobile smoke exhaust machine according to claim 1, characterized in that, A control box is provided on the driving motor. The push rod mechanism is installed between the control box and the inner wall of the cylindrical housing. The push rod mechanism includes a first limit plate, a second limit plate, and an electric push rod electrically connected to the control box. The first limit plate is fixed on the control box, the second limit plate is fixed on the inner wall of the cylindrical housing, and the electric push rod is installed between the first limit plate and the second limit plate.

3. The lightweight fire-fighting mobile smoke exhaust machine according to claim 1, characterized in that the driving motor includes a housing, and a first shaft sleeve and a second shaft sleeve installed at both ends of the housing. A plurality of flow channel holes are machined in the housing along the direction from the first shaft sleeve to the second shaft sleeve. A plurality of water passing holes are machined on the outer end faces of the first shaft sleeve and the second shaft sleeve. Each of the water passing holes is communicated with at least one of the flow channel holes. A connection cover is provided at the outer end of the first shaft sleeve. An injection cavity is formed between one side of the connection cover and all the water passing holes on the first shaft sleeve, and a water inlet hole communicated with its injection cavity is machined on the connection cover.

4. The lightweight fire-fighting mobile smoke exhaust machine according to claim 3, characterized in that the driving motor further includes a main shaft. The main shaft is arranged in the housing. The first shaft sleeve and the second shaft sleeve are respectively rotatably sleeved at both ends of the main shaft, and seals are formed between the first shaft sleeve and the second shaft sleeve and between the main shaft and the housing. A sealing end cover is arranged between the second shaft sleeve and the main shaft.

5. The lightweight fire-fighting mobile smoke exhaust machine according to claim 4, characterized in that the blade assembly includes a connection head and a fixing ring. The connection head is sleeved on one end of the main shaft away from the first shaft sleeve, and the connection head is located in the inner hole of the fixing ring. A plurality of blades are fixed between the fixing ring and the connection head.

6. The lightweight fire-fighting mobile smoke exhaust machine according to claim 3, characterized in that transition sinking grooves are machined on the side ring walls of the first shaft sleeve and the second shaft sleeve. All the water passing holes on the first shaft sleeve are communicated with its transition sinking groove. The transition sinking groove on the first shaft sleeve is communicated with all the flow channel holes on the housing. All the water passing holes on the second shaft sleeve are communicated with its transition sinking groove. The transition sinking groove on the second shaft sleeve is communicated with all the flow channel holes on the housing.

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