Fire truck-mounted smoke exhaust system with air supply and smoke exhaust functions

Abstract

The application discloses a fire truck-mounted smoke exhaust system with air supply and smoke exhaust functions, which comprises a rotating platform, a lifting mechanism and at least one smoke exhaust component. The lifting mechanism is arranged on the rotating platform, and each smoke exhaust component is driven to lift by an independent lifting mechanism. When the smoke exhaust component is lifted by the lifting mechanism, the smoke exhaust component supplies air to a smoke site by positive pressure. When the smoke exhaust component is lowered to be close to the ground or close to the ground, a smoke exhaust hose is connected to the air inlet end of the smoke exhaust component, and the smoke in the smoke site is extracted through the smoke exhaust hose. Technical effects are as follows: when the smoke exhaust component is lifted, air is supplied to the smoke site by positive pressure; when the smoke exhaust component is lowered to be close to the ground or close to the ground, a smoke exhaust hose is connected to the air inlet end of the smoke exhaust component, and the smoke in the smoke site is extracted through the smoke exhaust hose.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire-fighting equipment, in particular to a fire-fighting vehicle-mounted smoke exhaust system with air supply and smoke exhaust functions. BACKGROUND

[0002] When a fire accident occurs, especially when a large fire or a dangerous chemical leakage accident occurs, a large amount of flammable, explosive and toxic gas and smoke often accompanies, causing great harm to the on-site personnel and the surrounding environment, and bringing great difficulty and risk to fire fighting and on-site rescue. According to statistics, more than 85% of the people died in the fire were due to inhaling toxic smoke.

[0003] According to the specific situation of the fire scene, when fighting the fire, it may be necessary to drive away the smoke by using the fire smoke exhaust machine to supply air to the smoke site at positive pressure, or it may be necessary to use the fire smoke exhaust machine to suck the smoke of the smoke site at negative pressure. At present, the fire smoke exhaust machine for positive pressure air supply and the fire smoke exhaust machine for negative pressure smoke suction are two independent systems. When the same fire scene needs both the fire smoke exhaust machine for positive pressure air supply and the fire smoke exhaust machine for negative pressure smoke suction, two devices are often called, which not only consumes too much fire-fighting resources, but also occupies a larger fire-fighting site and more layout time, affecting the efficiency of fire rescue.

[0004] In theory, all smoke exhaust machines have negative pressure suction capacity, and the suction exhaust smoke needs to connect the smoke exhaust hose to the smoke site. However, under normal circumstances, the existing smoke exhaust machine is installed on the upper part of the chassis platform, and the smoke exhaust machine is still at a considerable height from the ground. In addition, the smoke exhaust hose is heavy, and the manpower at the fire scene cannot connect the smoke exhaust hose. Therefore, the negative pressure suction capacity of the existing smoke exhaust machine has not been utilized. According to the actual situation of the fire scene, the smoke exhaust machine for positive pressure air supply needs to supply air at a certain height to drive away the smoke. In view of the actual situation, the height requirements of the air supply port of the smoke exhaust machine for positive pressure air supply and the air inlet end of the fire smoke exhaust machine for negative pressure smoke suction are different. Under this traditional prejudice, it is almost impossible to realize the fire smoke exhaust machine which can both supply air at positive pressure and suck smoke at negative pressure in the same system.

[0005] Therefore, it is necessary to develop a fire-fighting vehicle-mounted smoke exhaust system with air supply and smoke exhaust functions to overcome the traditional prejudice. SUMMARY

[0006] To solve the above technical problems, the purpose of the present application is to disclose a fire-fighting vehicle-mounted smoke exhaust system with air supply and smoke exhaust functions, so as to realize that in the same vehicle-mounted smoke exhaust system, according to the situation of the fire scene, it can be used as a fire smoke exhaust machine for positive pressure air supply and as a fire smoke exhaust machine for negative pressure smoke suction.

[0007] To achieve the first invention purpose, the application provides a fire truck-mounted smoke exhaust system with air supply and smoke exhaust functions, comprising a rotating platform, a lifting mechanism and at least one smoke exhaust assembly, the lifting mechanism is arranged on the rotating platform, each smoke exhaust assembly is driven to lift by an independent lifting mechanism; when the smoke exhaust assembly is lifted by the lifting mechanism, the smoke exhaust assembly uses positive pressure to supply air to the smoke site to disperse smoke; when the smoke exhaust assembly is lowered to be close to the ground or close to the ground by the lifting mechanism, the smoke exhaust hose is connected to the air inlet end of the smoke exhaust assembly, and the smoke in the smoke site is extracted through the smoke exhaust hose.

[0008] Preferably, the smoke exhaust assembly is one.

[0009] Preferably, the smoke exhaust assembly is two.

[0010] Preferably, the smoke exhaust assembly is three.

[0011] Preferably, the smoke exhaust assembly is four.

[0012] Preferably, the lifting mechanism comprises a first lifting assembly and a second lifting assembly.

[0013] The first lifting assembly comprises a support block, a first swing rod, a second swing rod and a first oil cylinder, the support block is provided with a first fulcrum and a second fulcrum, the first swing rod is hinged to the first fulcrum of the support block, the second swing rod is hinged to the second fulcrum of the support block, the first oil cylinder takes the support block as a fulcrum, and the telescopic rod of the first oil cylinder lifts the top end of the first swing rod.

[0014] The second lifting assembly comprises a first connecting block, a third swing rod, a fourth swing rod, a second oil cylinder and a second connecting block, the first connecting block is provided with a third fulcrum, a fourth fulcrum, a fifth fulcrum and a sixth fulcrum, the second connecting block is provided with a seventh fulcrum and an eighth fulcrum, the first swing rod is hinged to the third fulcrum, the second swing rod is hinged to the fourth fulcrum, the two ends of the third swing rod are hinged to the fifth fulcrum and the eighth fulcrum respectively, the two ends of the fourth swing rod are hinged to the sixth fulcrum and the seventh fulcrum respectively, and the second oil cylinder takes the first connecting block as a fulcrum, and the telescopic rod of the second oil cylinder lifts the top end of the fourth swing rod.

[0015] Preferably, when the lifting mechanism is in the lifting state, the maximum included angle of the first lifting assembly and the second lifting assembly is 120°.

[0016] Preferably, when the lifting mechanism is in the descending state, the maximum included angle of the first lifting assembly and the second lifting assembly is 120°.

[0017] Preferably, the air supply or smoke exhaust volume of the smoke exhaust assembly is 25*104m3 / h-30*104m3 / h.

[0018] Preferably, the smoke exhaust assembly is a fan.

[0019] Compared with the prior art, the present application has the following technical effects:

[0020] (1) The vehicle-mounted smoke exhaust system has a rotating platform and at least one smoke exhaust assembly. The lifting mechanism is arranged on the rotating platform, and each smoke exhaust assembly is driven to ascend and descend by the independent lifting mechanism. When there is only one smoke exhaust assembly, the smoke exhaust assembly can be lowered and placed on the ground by the lifting mechanism under the condition that the positive pressure air supply requirement is met, so as to facilitate the connection of the smoke exhaust hose, so that the present application has the functions of positive pressure air supply after lifting and negative pressure suction of smoke through the smoke exhaust hose after falling to the ground. During the positive pressure air supply and negative pressure suction functions, the rotating platform is rotated within a range of 360° to adjust the direction of the air supply port or the air inlet of the smoke exhaust assembly.

[0021] (2) When there are more than one smoke exhaust assembly, the multiple smoke exhaust assemblies can either simultaneously supply air to the smoke site to disperse smoke when being lifted by positive pressure, or simultaneously suck out the smoke in the smoke site through the smoke exhaust hose when being lowered to be close to the ground. When multiple smoke exhaust assemblies are used, the efficiency of air supply or smoke exhaust is greatly improved, which is helpful for fire rescue.

[0022] (3) When there are more than one smoke exhaust assembly, according to the actual working condition of the fire site, some smoke exhaust assemblies can be lifted for air supply, and the other smoke exhaust assemblies can be lowered to be close to the ground for smoke suction, so as to meet the diversified needs of the fire site.

[0023] (4) When four smoke exhaust assemblies are used, the weight and size of a single smoke exhaust assembly are relatively small, which is convenient for transportation, and the air supply or smoke exhaust volume is equivalent to 4 times that of a single smoke exhaust assembly. If a large enough smoke exhaust assembly is used to achieve the air supply or smoke exhaust volume of the above four smoke exhaust assemblies, the weight and size of the large enough smoke exhaust assembly will be much larger than those of four times of a single smoke exhaust assembly. The large enough smoke exhaust assembly is not convenient for transportation due to its large weight and size, which affects the fire extinguishing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1is the reset state diagram of the smoke exhaust assembly of the fire truck-mounted smoke exhaust system.

[0026] Figure 2 is the lifting state diagram of the smoke exhaust assembly of the fire truck-mounted smoke exhaust system.

[0027] Figure 3 is the stretching state diagram of the smoke exhaust assembly of the fire truck-mounted smoke exhaust system.

[0028] Figure 4 is the near-ground state diagram of the smoke exhaust assembly of the fire truck-mounted smoke exhaust system.

[0029] Figure 5 is the schematic diagram of the smoke exhaust system of a single smoke exhaust assembly.

[0030] Figure 6 is the schematic diagram of the smoke exhaust system of two smoke exhaust assemblies.

[0031] Figure 7 is the schematic diagram of the smoke exhaust system of three smoke exhaust assemblies.

[0032] Figure 8 is the schematic diagram of the smoke exhaust system of four smoke exhaust assemblies.

[0033] Wherein, 1, rotating platform; 2, lifting mechanism; 3, smoke exhaust assembly; 31, air inlet end; 4, first lifting assembly; 41, support block; 411, first supporting point; 412, second supporting point; 42, first swing rod; 43, second swing rod; 44, first oil cylinder; 5, second lifting assembly; 51, first connecting block; 511, third supporting point; 512, fourth supporting point; 513, fifth supporting point; 514, sixth supporting point; 52, third swing rod; 53, fourth swing rod; 54, second oil cylinder; 55, second connecting block; 551, seventh supporting point; 552, eighth supporting point. DETAILED DESCRIPTION

[0034] The present application will be described in detail below in conjunction with the embodiments shown in the drawings, but it should be noted that these embodiments are not a limitation on the present application, and equivalent changes or substitutions in function, method, or structure made by those of ordinary skill in the art based on these embodiments are within the scope of the present application.

[0035] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0036] Embodiment 1

[0037] Referring to Figures 1 to 4 The present embodiment discloses a specific implementation of a fire truck-mounted smoke exhaust system with air supply and smoke exhaust functions.

[0038] The present embodiment provides a fire truck-mounted smoke exhaust system with air supply and smoke exhaust functions, which comprises a rotating platform 1, a lifting mechanism 2 and at least one smoke exhaust assembly 3. The lifting mechanism 2 is arranged on the rotating platform 1. Each smoke exhaust assembly 3 is driven to lift by an independent lifting mechanism 2. When the smoke exhaust assembly 3 is lifted by the lifting mechanism 2, the smoke exhaust assembly 3 uses positive pressure to supply air to the smoke site to disperse smoke. When the smoke exhaust assembly 3 is lowered to the ground or close to the ground by the lifting mechanism 2, a smoke exhaust hose is connected to the air inlet end 31 of the smoke exhaust assembly 3, and the smoke in the smoke site is extracted through the smoke exhaust hose.

[0039] Specifically, referring to Figure 1 , Figure 1 is a smoke exhaust assembly reset state diagram of a fire truck-mounted smoke exhaust system. The fire truck-mounted smoke exhaust system is provided with a rotating platform 1, and at least one lifting mechanism 2 is arranged on the rotating platform 1. Each lifting mechanism 2 drives one smoke exhaust assembly 3. The smoke exhaust assembly 3 can select a fan. The air supply or smoke exhaust capacity of the smoke exhaust assembly 3 is 25*10 4 m 3 / h~30*10 4 m 3 / h; referring to Figure 2 , Figure 2 is a smoke exhaust assembly lifting state diagram of a fire truck-mounted smoke exhaust system. At this time, the smoke exhaust assembly 3 is lifted to the highest state, uses positive pressure to supply air to the smoke site to disperse smoke, and the smoke exhaust assembly 3 is lifted to a certain height, which is helpful for remote air supply; referring to Figure 3 , Figure 3 is a smoke exhaust assembly extension state diagram of a fire truck-mounted smoke exhaust system. At this time, the smoke exhaust assembly 3 is lifted to a medium height state, uses positive pressure to supply air to the smoke site, and the lifting height of the smoke exhaust assembly 3 is determined according to the specific location of the smoke site; when the smoke exhaust assembly 3 is inFigure 2 the position shown or Figure 3 The position shown or Figure 4 Figure 4 is a state diagram of the smoke exhaust assembly of the fire vehicle-mounted smoke exhaust system close to the ground. At this time, the smoke exhaust hose is connected to the air inlet end 31 of the smoke exhaust assembly 3, and the smoke in the smoke place is extracted through the smoke exhaust hose.

[0040] Therefore, in the case of meeting the requirements of lifting and positive pressure air supply, the smoke exhaust assembly can be lowered and placed on the ground by the lifting mechanism 2, which facilitates the connection of the smoke exhaust hose. The embodiment has the functions of remote positive pressure air supply after lifting and remote negative pressure suction and smoke exhaust through the smoke exhaust hose after landing.

[0041] It should be further pointed out that during the positive pressure air supply and negative pressure suction functions, the orientation of the air supply port or air inlet of the smoke exhaust assembly is adjusted by rotating within the 360° range of the rotary platform to adapt to the fire scene.

[0042] The lifting principle of the lifting mechanism is as follows: referring to Figures 1 to 4 , the lifting mechanism 2 comprises a first lifting assembly 4 and a second lifting assembly 5; the first lifting assembly 4 comprises a support block 41, a first swing rod 42, a second swing rod 43 and a first oil cylinder 44, the support block 41 is provided with a first fulcrum 411 and a second fulcrum 412, the first swing rod 42 is hinged to the first fulcrum 411 of the support block 41, the second swing rod 43 is hinged to the second fulcrum 412 of the support block 41, the first oil cylinder 44 takes the support block 41 as the fulcrum, and the extension rod of the first oil cylinder 44 lifts the top end of the first swing rod 42;

[0043] The second lifting assembly 5 comprises a first connecting block 51, a third swing rod 52, a fourth swing rod 53, a second oil cylinder 54 and a second connecting block 55, the first connecting block 51 is provided with a third fulcrum 511, a fourth fulcrum 512, a fifth fulcrum 513 and a sixth fulcrum 514, the second connecting block 55 is provided with a seventh fulcrum 551 and an eighth fulcrum 552, the first swing rod 42 is hinged to the third fulcrum 511, the second swing rod 43 is hinged to the fourth fulcrum 512, the two ends of the third swing rod 52 are respectively hinged to the fifth fulcrum 513 and the eighth fulcrum 552, the two ends of the fourth swing rod 53 are respectively hinged to the sixth fulcrum 514 and the seventh fulcrum 551, and the second oil cylinder 54 takes the first connecting block 51 as the fulcrum, and the extension rod of the second oil cylinder 54 lifts the top end of the fourth swing rod 53.

[0044] ​Specifically, the support block 41 is fixed to the slewing platform 1, the first supporting point 411, the second supporting point 412, the first swing rod 42, the second swing rod 43, the third supporting point 511 and the fourth supporting point 512 form the first lifting assembly 4, the first lifting assembly 4 is a quadrilateral swing rod mechanism, and the first lifting assembly 4 swings through the extension and contraction of the first oil cylinder 44; the fifth supporting point 513, the sixth supporting point 514, the seventh supporting point 551, the eighth supporting point 552, the third swing rod 52 and the fourth swing rod 53 form the second lifting assembly 5, the second lifting assembly 5 is also a quadrilateral swing rod mechanism, and the second lifting assembly 5 swings through the extension and contraction of the second oil cylinder 54; the first lifting assembly 4 and the second lifting assembly 5 are connected through the first connecting block 51, and the first oil cylinder 44 and the second oil cylinder 54 are matched in extension and contraction to realize that the smoke exhaust assembly 3 is lifted, stretched, close to the ground and reset.

[0045] When the lifting mechanism 2 is in the lifting state, referring to Figure 2 that is, the first lifting assembly 4 is in the vertical state, and the second lifting assembly 5 is in the upward angle state, the maximum included angle A between the first lifting assembly 4 and the second lifting assembly 5 is 120°, at this time, the smoke exhaust assembly 3 is convenient for positive pressure air supply operation.

[0046] When the lifting mechanism 2 is in the lowering state, referring to Figure 4 that is, the first lifting assembly 4 is in the horizontal state, and the second lifting assembly 5 is in the downward angle state, the maximum included angle B between the first lifting assembly and the second lifting assembly is 120°, when the included angle B between the first lifting assembly and the second lifting assembly is 120°, the smoke exhaust assembly 3 is in the close-to-ground state, at this time, the air inlet end 31 of the smoke exhaust assembly 3 is convenient for manual connection of the smoke exhaust hose and negative pressure smoke exhaust operation.

[0047] Embodiment 2

[0048] On the basis of embodiment 1, the smoke exhaust assembly 3 of embodiment 2 is one, referring to Figure 5 , the smoke exhaust assembly 3 is lifted to the highest state, and air is supplied to the smoke place by positive pressure to disperse smoke; the smoke exhaust assembly 3 is lowered to be close to the ground or close to the ground, the smoke exhaust hose is connected to the air inlet end 31 of the smoke exhaust assembly 3, and the smoke in the smoke place is extracted through the smoke exhaust hose.

[0049] Through embodiment 2, the lifting of the smoke exhaust assembly 3 by the lifting mechanism 2 is realized in the case that there is one smoke exhaust assembly 3, and the smoke exhaust assembly 3 can be lowered to be close to the ground; the fire-fighting personnel can realize positive pressure air supply and extraction of smoke by connecting the smoke exhaust hose to the air inlet end 31 of the smoke exhaust assembly 3 according to the working condition of the fire scene, which overcomes the industry prejudice that the different height requirements of positive pressure air supply and negative pressure extraction cannot be flexibly switched in the same smoke exhaust system.

[0050] Embodiment 3

[0051] On the basis of Embodiment 1, the smoke exhaust assembly 3 of Embodiment 3 is two, see Figure 6 , according to the actual working condition of the fire scene, because each smoke exhaust assembly 3 has an independent lifting mechanism 2, one of the smoke exhaust assemblies 3 can be lifted for positive pressure air supply, and the other smoke exhaust assembly 3 can be lowered to be close to the ground for smoke exhaust. The smoke exhaust hose is connected to the air inlet end 31 of the smoke exhaust assembly 3, and the smoke in the smoke place is extracted through the smoke exhaust hose. When two smoke exhaust assemblies are used, it helps to meet the diversified needs of fire rescue at the fire scene.

[0052] In addition, two smoke exhaust assemblies 3 can also be lifted at the same time for positive pressure air supply, and the lifting heights of the two smoke exhaust assemblies 3 can be different, or the two smoke exhaust assemblies 3 can also be lowered to the ground at the same time for smoke extraction. The air supply or smoke exhaust capacity of a single smoke exhaust assembly 3 is 25*10 4 m 3 / h~30*10 4 m 3 / h, when two smoke exhaust assemblies 3 are used, the smoke exhaust capacity can reach 50*10 4 m 3 / h~60*10 4 m 3 / h, which greatly improves the working efficiency of air supply or smoke exhaust.

[0053] Embodiment 4

[0054] On the basis of Embodiment 1, the smoke exhaust assembly 3 of Embodiment 4 is three, see Figure 7 ,

[0055] According to the actual working condition of the fire scene, because each smoke exhaust assembly 3 has an independent lifting mechanism 2, part of the smoke exhaust assemblies 3 can be lifted for positive pressure air supply, and the other part of the smoke exhaust assemblies 3 can be lowered to be close to the ground for smoke exhaust. The smoke exhaust hose is connected to the air inlet end 31 of the smoke exhaust assembly 3, and the smoke in the smoke place is extracted through the smoke exhaust hose. When three smoke exhaust assemblies are used, it helps to meet the diversified needs of fire rescue at the fire scene.

[0056] In addition, three smoke exhaust assemblies 3 can also be lifted at the same time for positive pressure air supply, and the lifting heights of the three smoke exhaust assemblies 3 can be different, or the three smoke exhaust assemblies 3 can also be lowered to the ground at the same time for smoke extraction. The air supply or smoke exhaust capacity of a single smoke exhaust assembly 3 is 25*10 4 m 3 / h~30*10 4 m 3 / h, when three smoke exhaust assemblies 3 are used, the smoke exhaust capacity can reach 75*104 m 3 / h, greatly improving the working efficiency of air supply or smoke extraction. 4 m 3 / h, greatly improving the working efficiency of air supply or smoke extraction.

[0057] In addition, when the three smoke extraction assemblies 3 simultaneously perform air supply or smoke extraction, the maximum smoke extraction capacity can reach 90*10 4 m 3 / h, if a smoke extraction assembly with a smoke extraction capacity of 90*10 4 m 3 / h is used alone, the weight and volume of the smoke extraction assembly with a smoke extraction capacity of 90*10 4 m 3 / h will be very large (the smoke extraction assembly needs a larger diameter impeller), which is not conducive to transportation and occupies a large space, and on the other hand, the smoke extraction capacity cannot be adjusted according to the actual working conditions of the fire scene, so the arrangement scheme of the three small smoke extraction assemblies 3 is superior to that of a single smoke extraction assembly with a smoke extraction capacity of 90*10 4 m 3 / h.

[0058] Example 5

[0059] Based on Example 1, the smoke extraction assemblies 3 of Example 5 are four, as shown in Figure 8 ,

[0060] According to the actual working conditions of the fire scene, since each smoke extraction assembly 3 has an independent lifting mechanism 2, part of the smoke extraction assemblies 3 can be lifted for positive pressure air supply, and the other part of the smoke extraction assemblies 3 can be lowered to be close to the ground for smoke extraction. The smoke extraction assemblies 3 are connected to the smoke extraction hose at the air inlet end 31, and the smoke in the smoke extraction place is extracted through the smoke extraction hose. When four smoke extraction assemblies are used, it helps to meet the diversified needs of fire rescue at the fire scene.

[0061] In addition, the four smoke extraction assemblies 3 can also be lifted simultaneously for positive pressure air supply, and the lifting height of the four smoke extraction assemblies 3 can be different, or the four smoke extraction assemblies 3 can also be lowered to the ground at the same time for smoke extraction. The air supply or smoke extraction capacity of a single smoke extraction assembly 3 is 25*10 4 m 3 / h~30*10 4 m 3 / h, and when four smoke extraction assemblies 3 are used, the smoke extraction capacity when collectively air supplying or smoke extracting can reach 100*10 4 m 3 / h~120*10 4 m 3 / h, greatly improving the working efficiency of air supply or smoke extraction.

[0062] In addition, when all four smoke exhaust components 3 are simultaneously supplying or exhausting air, their maximum smoke exhaust volume can reach 120*10. 4 m 3 / h, if the exhaust volume is 120*10 4 m 3 / h smoke extraction assembly, 120*10 4 m 3 A smoke extraction assembly with a capacity of 120m³ / h would be very heavy and bulky (requiring a larger diameter impeller), which would be inconvenient for transportation and take up a lot of space. Furthermore, it would not allow for adjustments to the smoke extraction volume based on the actual conditions at the fire scene. Therefore, the arrangement of four smaller smoke extraction assemblies (3) is superior to a single 120m³ / h assembly. 4 m 3 Smoke exhaust assembly with a smoke exhaust capacity of / h.

[0063] It should be further noted that when the air supply or exhaust volume of a single smoke exhaust component 3 is 25*10 4 m 3 / h~30*10 4 m 3 At a speed of / h, the exhaust assembly 3 requires an internal combustion engine driving force of 250 horsepower, and the internal combustion engine weighs approximately 400 kg; while 120*10 4 m 3 The exhaust system with a smoke output of / h requires a 1000 horsepower internal combustion engine, and the engine alone will weigh 2000kg or even 3000kg. Therefore, the effect of a large internal combustion engine can be achieved by four smaller internal combustion engines. Smaller internal combustion engines and exhaust systems are lighter, more flexible, and easier to transport, making it easier to use the vehicle-mounted exhaust system flexibly according to the fire scene conditions.

Claims

1. A fire vehicle exhaust system having a function of supplying air and discharging smoke, characterized by, The device comprises a rotating platform, a lifting mechanism and at least one smoke exhaust component, the lifting mechanism is arranged on the rotating platform, each smoke exhaust component is lifted by an independent lifting mechanism; When the smoke exhaust component is lifted by the lifting mechanism, the smoke exhaust component blows air to the smoke site by positive pressure to disperse smoke; When the smoke exhaust component is lowered to the ground or close to the ground by the lifting mechanism, the lowest part of the smoke exhaust component is lower than the lowest part of the rotating platform, the smoke exhaust hose is connected to the air inlet end of the smoke exhaust component, and the smoke in the smoke site is extracted through the smoke exhaust hose; The rotating platform rotates within a range of 360°; The lifting mechanism comprises a first lifting component and a second lifting component; The first lifting component comprises a support block, a first swing rod, a second swing rod and a first oil cylinder, the first swing rod is hinged to the support block at a first pivot point, the second swing rod is hinged to the support block at a second pivot point, the first oil cylinder takes the support block as a pivot point, and the telescopic rod of the first oil cylinder lifts the top end of the first swing rod; The second lifting component comprises a first connecting block, a third swing rod, a fourth swing rod, a second oil cylinder and a second connecting block, the first connecting block is provided with a third pivot point, a fourth pivot point, a fifth pivot point and a sixth pivot point, the second connecting block is provided with a seventh pivot point and an eighth pivot point, the first swing rod is hinged to the third pivot point, the second swing rod is hinged to the fourth pivot point, the two ends of the third swing rod are hinged to the fifth pivot point and the eighth pivot point respectively, the two ends of the fourth swing rod are hinged to the sixth pivot point and the seventh pivot point respectively, and the second oil cylinder takes the first connecting block as a pivot point, and the telescopic rod of the second oil cylinder lifts the top end of the fourth swing rod; The support block is fixed to the rotating platform, and the line connecting the first pivot point and the second pivot point is an oblique line.

2. The fire engine-mounted smoke exhaust system having a smoke supply and exhaust function according to claim 1, wherein, The smoke exhaust component is one.

3. The fire engine-mounted smoke exhaust system having a smoke supply and exhaust function according to claim 1, wherein, The smoke exhaust component is two.

4. The fire engine-mounted smoke exhaust system having a smoke supply and exhaust function according to claim 1, wherein, The smoke exhaust component is three.

5. The fire engine-mounted smoke exhaust system having a smoke supply and exhaust function according to claim 1, wherein, The smoke exhaust component is four.

6. The fire engine-mounted smoke exhaust system having a smoke supply and exhaust function according to any one of claims 1 to 5, characterized in that, The air supply or smoke exhaust volume of the smoke exhaust assembly is 25*10 4 m 3 / h ~ 30*10 4 m 3 / h.

7. The fire engine-mounted smoke exhaust system having a smoke supply and exhaust function according to claim 6, wherein, The smoke exhaust component is a fan.

8. The fire engine-mounted smoke exhaust system having the functions of air supply and smoke exhaust according to claim 6, wherein, When the lifting mechanism is in the lifting state, the maximum included angle between the first lifting component and the second lifting component is 120°.

9. The fire engine-mounted smoke exhaust system having a smoke supply and exhaust function according to claim 6, wherein, When the lifting mechanism is in the lowering state, the maximum included angle between the first lifting component and the second lifting component is 120°.

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