A smoke exhaust duct displacement mechanism and method of use

Abstract

The application discloses a smoke exhaust pipeline displacement mechanism and a use method. The smoke exhaust fixed interface is arranged at the local smoke exhaust port of a smoke exhaust fire engine. The fan air outlet of the smoke exhaust fire engine is connected with the smoke exhaust fixed interface. The remote smoke exhaust vertical pipe is installed on the smoke exhaust fire engine. One end of the rotary elbow pipe is rotatably connected with one end of the remote smoke exhaust vertical pipe through a rotating assembly. The other end of the rotary elbow pipe is detachably connected with the smoke exhaust fixed interface through suspension or a movable connecting piece. A detection switch one is arranged on one side of the connection between the rotary elbow pipe and the smoke exhaust fixed interface. A detection switch two is arranged on one side of the suspension position. One end of a rotary oil cylinder is installed on the carriage of the smoke exhaust fire engine through a rotary oil cylinder mounting seat. The other end of the rotary oil cylinder is connected with the outer side of the rotary elbow pipe. The application adopts a rotary supporting structure formed by self-lubricating bearings. The structure is compact, which is beneficial to space arrangement and can adapt to the high-temperature environment of smoke exhaust which is not easy to be lubricated. The application can be designed as a spliced structure, which is convenient for processing and installation and is convenient for later maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to a smoke exhaust mechanism of a smoke exhaust fire engine, in particular to a smoke exhaust pipeline displacement mechanism and a use method. BACKGROUND

[0002] The smoke exhaust fire engine is a special fire engine for processing fire smoke, and the main working device is composed of a smoke exhaust system including a fan and a smoke exhaust pipeline.

[0003] The working site of the smoke exhaust fire engine can be a complex urban street, a narrow alley or an open industrial park. In the complex urban street or the narrow alley, there are many surrounding residential areas, and the high temperature and toxicity of the fire smoke can cause burns, burns, poisoning or ignition of flammable materials in the surrounding residential areas. At this time, the thick smoke needs to be guided to the open area through the smoke exhaust pipeline for smoke exhaust. In the industrial park, the smoke exhaust fire engine can exhaust smoke upward on the spot in the open area, which can be quickly deployed on the fire site and start working without complex preparation. This rapid response capability is crucial for timely controlling the fire and reducing the harm of smoke to personnel and the environment.

[0004] At present, the smoke exhaust fire engines in the industry all use the posture adjustment of the fan itself for on-site smoke exhaust, or realize remote smoke exhaust through the straight connection of the smoke exhaust pipeline. However, they cannot meet the needs of various scenes at the same time, resulting in great limitations in rescue. Meanwhile, configuring multiple smoke exhaust fire engines with different functions to meet the scheduling of various scenes greatly increases the financial cost. SUMMARY

[0005] The purpose of the present application is to provide a smoke exhaust pipeline displacement mechanism that can switch the smoke exhaust channel mode according to the specific working site situation, meet the needs of various scenes, and be more efficient. The use method is also provided.

[0006] Technical scheme: A smoke exhaust pipeline displacement mechanism, comprising a remote smoke exhaust vertical pipe, a rotary elbow, a rotary oil cylinder and a smoke exhaust fixed interface. The smoke exhaust fixed interface is arranged at the on-site smoke exhaust port of the smoke exhaust fire engine, and the fan outlet of the smoke exhaust fire engine is connected with the smoke exhaust fixed interface. The remote smoke exhaust vertical pipe is installed on the smoke exhaust fire engine. One end of the rotary elbow is rotatably connected with one end of the remote smoke exhaust vertical pipe through a rotating assembly, and the other end is suspended or connected with the smoke exhaust fixed interface through a movable connecting piece. A detection switch one is arranged on one side of the connection between the rotary elbow and the smoke exhaust fixed interface, and a detection switch two is arranged on one side of the suspension. One end of the rotary oil cylinder is installed on the carriage of the smoke exhaust fire engine through a rotary oil cylinder mounting seat, and the other end is connected with the outer side of the rotary elbow.

[0007] Further, the rotating assembly comprises self-lubricating bearing one, self-lubricating bearing two, self-lubricating bearing three, fastener one, end cover, fastener two, the self-lubricating bearing one and the self-lubricating bearing two are respectively installed in the flange groove at the rotating elbow port, and the self-lubricating bearing one is close to the inside, and the self-lubricating bearing two is close to the rotating elbow port, the port of the remote smoke vertical pipe is provided with a boss, the boss is provided in the rotating elbow, the end surface of the boss is in contact with the self-lubricating bearing one, the outer peripheral surface is in contact with the self-lubricating bearing two, the end cover is sleeved on the remote smoke vertical pipe, and the self-lubricating bearing three is arranged between the end cover and the remote smoke vertical pipe, the self-lubricating bearing three is assembled on the end cover through the fastener one, and the end cover is connected with the end surface of the rotating elbow through the fastener two, so that the self-lubricating bearing three is pressed against the boss of the remote smoke vertical pipe.

[0008] Best, the self-lubricating bearing three and the end cover are in a multi-piece combined type, and the assembly type is staggered.

[0009] Best, the boss of the remote smoke vertical pipe and the contact surface of the self-lubricating bearing one are provided with a sealing groove, the sealing groove is provided with an end face sealing element, and the cross section of the end face sealing element is circular or square.

[0010] Further, the movable connecting piece comprises fastener three, spring, movable assembly, sealing element, the lower part of the movable assembly and the outlet end of the smoke exhaust fixed interface form a concave-convex structure contact surface, and the two are in contact and connected, the spring is sleeved on the upper part of the movable assembly, the outer side surface of the rotating elbow is provided with a guide sleeve, the upper part of the movable assembly is provided in the guide sleeve from one end to the end face of the spring and the guide sleeve, the fastener three is provided in the guide sleeve from the other end and is in abutment with the movable assembly, so that the movable assembly and the smoke exhaust fixed interface are in a compressed state through the spring.

[0011] Best, the upper part of the movable assembly is a threaded stud, and the lower part is a disc structure with a notch at the bottom.

[0012] Best, the contact surface between the movable assembly and the smoke exhaust fixed interface is provided with a sealing element, the sealing element is embedded on the movable assembly, and the sealing element is an inflatable sealing element.

[0013] Best, the movable connecting piece is provided with a plurality of intervals in the circumferential direction of the rotating elbow.

[0014] The use method of the smoke exhaust pipeline displacement mechanism, the smoke exhaust includes two modes of remote smoke exhaust and local smoke exhaust, when being in the local smoke exhaust mode, the rotary oil cylinder is in the retraction stroke, drives the rotary elbow pipe to rotate around the connecting end of the remote smoke exhaust vertical pipe, the rotary elbow pipe is gradually disconnected with the smoke exhaust fixed interface, the port of the rotary elbow pipe is suspended, the detection switch two receives the signal, at this time, the dense smoke is locally discharged through the smoke exhaust fixed interface; when being in the remote smoke exhaust mode, the rotary oil cylinder is in the extension stroke, drives the rotary elbow pipe to rotate around the connecting end of the remote smoke exhaust vertical pipe, the rotary elbow pipe is gradually connected with the smoke exhaust fixed interface, after being in place, the detection switch one receives the signal, at this time, the dense smoke sequentially passes through the rotary elbow pipe and the remote smoke exhaust vertical pipe from the smoke exhaust fixed interface, and finally is discharged to the open area through the smoke exhaust hose.

[0015] Best, when the fire truck is in the driving state or the shutdown state, the electrical control unit detects the motor current size of the smoke exhaust fan, judges whether it is in the working state, if the fan is in the working state, the original state is maintained, otherwise, whether the detection switch one receives the signal is judged, if there is the signal, the original state is maintained, otherwise, the electrical control unit controls the hydraulic power unit and the hydraulic control unit to provide energy for the rotary cylinder of the air duct to perform the extension action, the mechanism is switched to the remote smoke exhaust mode, and the rainwater or the dirt is prevented from entering the smoke exhaust port of the fan.

[0016] Advantages: compared with the prior art, the advantages of the present application are:

[0017] 1. The rotary support structure formed by adopting the self-lubricating bearing is compact in structure size, is beneficial to space arrangement, simultaneously, the contact parts do not need to be lubricated separately, can adapt to the high-temperature working environment of the smoke exhaust which is not easy to lubricate, can be designed as a spliced structure, and is convenient for machining, installation and later maintenance;

[0018] 2. The oil cylinder rotationally switches the working mode of the smoke exhaust pipeline, the structure is simple, the movable assembly is dynamically and real-timely pressed against the smoke exhaust fixed interface through the spring, the contact sealing property is ensured by adopting the special inflation sealing, and the working reliability is high;

[0019] 3. Two groups of detection switches are arranged on the side of the movable assembly to determine the working state of the local smoke exhaust or the remote smoke exhaust of the smoke exhaust pipeline, and the operation is accurate and convenient;

[0020] 4. The remote smoke exhaust mode is automatically switched when being in the driving state or the shutdown state, the rainwater or the dirt is prevented from entering the smoke exhaust port of the fan, and the working safety is high. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the present application;

[0022] Figure 2 It is a top view of the smoke exhaust pipeline displacement mechanism when being in the local smoke exhaust mode;

[0023] Figure 3 This is a top view of the smoke exhaust duct displacement mechanism when in remote smoke exhaust mode;

[0024] Figure 4 for Figure 1 Magnified view Figure I ;

[0025] Figure 5 for Figure 1 Magnified view Figure II ;

[0026] Figure 6 This is a logic flow chart of the automatic switching to remote smoke exhaust mode when the fan stops working according to the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the accompanying drawings and specific examples. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0028] A smoke exhaust pipe displacement mechanism, such as Figures 1 to 6 As shown, it includes a remote smoke exhaust riser 1, a rotating elbow 2, a rotating cylinder 3, and a smoke exhaust fixed interface 19.

[0029] The smoke exhaust fixed interface 19 is arranged at the on-site smoke exhaust port of the smoke exhaust fire truck, the fan outlet of the smoke exhaust fire truck is connected to the smoke exhaust fixed interface 19, the remote smoke exhaust riser 1 is installed on the smoke exhaust fire truck, and one end of the rotating elbow 2 is rotatably connected to one end of the remote smoke exhaust riser 1 through a rotating component. The rotating component includes a self-lubricating bearing 1 7, a self-lubricating bearing 2 9, a self-lubricating bearing 3 10, a fastener 11, an end cover 12, and a fastener 2 13. The lubricating bearing 1 7 and the self-lubricating bearing 2 9 are respectively installed in the flange grooves at the port of the rotating elbow 2, and the lubricating bearing 1 7 is close to the inside, and the self-lubricating bearing 2 9 is close to the port of the rotating elbow 2. The port of the remote smoke exhaust riser 1 is provided with a boss, which is passed through the rotating elbow 2. The end face of the boss contacts the lubricating bearing 1 7. A sealing groove is provided between the contact surfaces of the two, and an end face seal 8 is provided in the sealing groove. The cross-section of the end face seal 8 is circular or square. The outer peripheral surface of the boss contacts the self-lubricating bearing 2 9, and the end cover 12 is sleeved on the remote smoke exhaust vertical pipe 1, with a self-lubricating bearing 3 10 provided between the two. The self-lubricating bearing 3 10 is assembled on the end cover 12 through the fastener 11, and the end cover 12 is connected to the end face of the rotary elbow 2 through the fastener 2 13, so that the self-lubricating bearing 3 10 is pressed against the boss of the remote smoke exhaust vertical pipe 1, together forming a rotating connection pair of the remote smoke exhaust vertical pipe 1 and the rotary elbow 2.

[0030] The self-lubricating bearing 3 10 and the end cover 12 are of a multi-piece assembly type, and the assembly is staggered at the joints, which is convenient for installation while ensuring the connection strength and rigidity.

[0031] The other end of the rotary elbow 2 is suspended or detachably connected with the smoke exhaust fixed interface 19 through the movable connecting pieces which are circumferentially spaced apart, and the movable connecting pieces include the fastener three 14, the spring 15, the movable assembly 17, the sealing piece 18, the upper part of the movable assembly 17 is a threaded stud, the lower part is a disc structure with a notch at the bottom, the outlet end of the smoke exhaust fixed interface 19 is correspondingly provided with a notch, the lower part of the movable assembly 17 and the outlet end of the smoke exhaust fixed interface 19 form a contact surface of the concave-convex structure, and the two are connected in contact, the sealing piece 18 is arranged between the contact surface of the movable assembly 17 and the smoke exhaust fixed interface 19, the sealing piece 18 is embedded on the movable assembly 17, and the sealing piece 18 is an inflation type sealing piece. The spring 15 is sleeved on the outer circumferential surface of the upper threaded stud of the movable assembly 17, a guide sleeve is arranged on the outer side surface of the rotary elbow 2, the upper part of the movable assembly 17 passes through the guide sleeve from one end of the guide sleeve to the end surface of the guide sleeve, and the fastener three 14 passes through the guide sleeve from the other end of the guide sleeve and abuts against the movable assembly 17, so that the movable assembly 17 and the smoke exhaust fixed interface 19 are in a compressed state through the spring 15.

[0032] The side of the connection between the rotary elbow 2 and the smoke exhaust fixed interface 19 is provided with a detection switch one 5, the side of the suspension position is provided with a detection switch two 6, one end of the rotary oil cylinder 3 is installed on the carriage of the smoke exhaust fire fighting truck through the rotary oil cylinder mounting seat 4, and the other end is connected with the outer side surface of the rotary elbow 2.

[0033] The rotary oil cylinder 3 drives the rotary elbow 2 to rotate through the extension and retraction action, and the smoke exhaust pipeline displacement mainly realizes the switching of the smoke exhaust passage mode through the extension and retraction of the rotary oil cylinder 3, and the connection and disconnection of the passage are realized through the docking device composed of the movable assembly 17 and the smoke exhaust fixed interface 19.

[0034] The use method of the smoke exhaust pipeline displacement mechanism includes two modes, a remote smoke exhaust mode and an on-site smoke exhaust mode. When the on-site smoke exhaust mode is used, the rotary oil cylinder 3 is in the retraction stroke, drives the rotary elbow 2 to rotate around the connection end of the rotary elbow 2 and the remote smoke vertical pipe 1, the rotary elbow 2 and the smoke exhaust fixed interface 19 are gradually disconnected, the port of the rotary elbow 2 is suspended, and the detection switch two 6 receives a signal. At this time, the dense smoke is discharged on site through the smoke exhaust fixed interface 19. When the remote smoke exhaust mode is used, the rotary oil cylinder 3 is in the extension stroke, drives the rotary elbow 2 to rotate around the connection end of the rotary elbow 2 and the remote smoke vertical pipe 1, the rotary elbow 2 and the smoke exhaust fixed interface 19 are gradually connected, and the detection switch one 5 receives a signal after being in place. At this time, the dense smoke passes through the smoke exhaust fixed interface 19, the rotary elbow 2 and the remote smoke vertical pipe 1 in sequence, and finally is discharged to the open area through the smoke exhaust hose 16.

[0035] As Figure 6As shown, when the fire truck is in a running state or a stopped state, the electrical control unit detects the motor current of the smoke exhaust fan, judges whether it is in a working state, if the fan is in a working state, the original state is maintained, otherwise, it is judged whether the detection switch 5 receives a signal, if there is a signal, the original state is maintained, otherwise, the electrical control unit controls the hydraulic power unit and the hydraulic control unit to provide energy to the rotary oil cylinder 3 of the air duct to perform the extension action, the mechanism is switched to the remote smoke exhaust mode, preventing rainwater or dirt from entering the smoke exhaust port of the fan, and improving the working safety.

Claims

1. A smoke exhaust duct displacement mechanism, characterized by: The invention comprises a remote smoke exhaust vertical pipe (1), a rotating elbow (2), a rotating oil cylinder (3), and a smoke exhaust fixed interface (19). The smoke exhaust fixed interface (19) is arranged at the local smoke exhaust port of the smoke exhaust fire truck. The air outlet of the smoke exhaust fire truck fan is connected to the smoke exhaust fixed interface (19). The remote smoke exhaust vertical pipe (1) is installed on the smoke exhaust fire truck. One end of the rotating elbow (2) is rotatably connected to one end of the remote smoke exhaust vertical pipe (1) through a rotating component, and the other end is suspended or detachably connected to the smoke exhaust fixed interface (19) through a movable connecting piece. A detection switch 1 (5) is provided on one side of the connection between the rotating elbow (2) and the smoke exhaust fixed interface (19), and a detection switch 2 (6) is provided on one side of the suspension. One end of the rotating oil cylinder (3) is installed on the car body of the smoke exhaust fire truck through a rotating oil cylinder mounting seat (4), and the other end is connected to the outer side of the rotating elbow (2).

2. The smoke exhaust duct displacement mechanism according to claim 1, characterized in that: The rotating assembly includes a self-lubricating bearing 1 (7), a self-lubricating bearing 2 (9), a self-lubricating bearing 3 (10), a fastener 1 (11), an end cover (12), and a fastener 2 (13). The lubricating bearing 1 (7) and the self-lubricating bearing 2 (9) are respectively installed in the flange groove at the end of the rotating elbow (2), and the lubricating bearing 1 (7) is close to the inside, and the self-lubricating bearing 2 (9) is close to the end of the rotating elbow (2). The end of the remote smoke exhaust vertical pipe (1) is provided with a boss, and the boss is passed through the rotating elbow. In (2), the end face of the boss contacts the lubricating bearing 1 (7), and the outer peripheral surface contacts the self-lubricating bearing 2 (9). The end cover (12) is sleeved on the remote smoke exhaust vertical pipe (1), and a self-lubricating bearing 3 (10) is provided between the two. The self-lubricating bearing 3 (10) is assembled on the end cover (12) through the fastener 1 (11). The end cover (12) is connected to the end face of the rotating elbow (2) through the fastener 2 (13), so that the self-lubricating bearing 3 (10) is pressed against the boss of the remote smoke exhaust vertical pipe (1).

3. The smoke exhaust duct displacement mechanism according to claim 2, characterized in that: The self-lubricating bearing 3 (10) and the end cover (12) are in a multi-piece assembly type, and the joints are staggered in the assembly type.

4. The smoke exhaust duct displacement mechanism according to claim 2, characterized in that: A sealing groove is provided between the boss of the remote smoke exhaust vertical pipe (1) and the contact surface of the lubricating bearing (7), and an end face sealing member (8) is provided in the sealing groove. The cross section of the end face sealing member (8) is circular or square.

5. The smoke exhaust duct displacement mechanism according to claim 1, characterized in that: The movable connecting part includes a fastener three (14), a spring (15), a movable component (17), and a sealing part (18). The lower part of the movable component (17) and the outlet end of the smoke exhaust fixed interface (19) form a contact surface with a concave-convex structure, and the two are contact-connected. The spring (15) is sleeved on the upper part of the movable component (17). A guide sleeve is provided on the outer surface of the rotary elbow (2). The upper part of the movable component (17) is passed through the guide sleeve from one end until the spring (15) and the end surface of the guide sleeve are in contact. The fastener three (14) is passed through the guide sleeve from the other end and is in contact with the movable component (17), so that the movable component (17) and the smoke exhaust fixed interface (19) are in a compressed state through the spring (15).

6. The smoke exhaust duct displacement mechanism according to claim 5, characterized in that: The upper part of the movable component (17) is a stud, and the lower part is a disc-shaped structure with a protrusion at the bottom. The outlet end of the smoke exhaust fixed interface (19) is correspondingly provided with a notch.

7. The smoke exhaust duct displacement mechanism according to claim 5, characterized in that: A sealing member (18) is provided between the contact surface of the movable component (17) and the smoke exhaust fixed interface (19). The sealing member (18) is embedded in the movable component (17) and is an inflatable sealing member.

8. A smoke exhaust duct displacement mechanism according to any one of claims 1, 5 to 7, characterized in that: A plurality of movable connecting pieces are arranged at intervals in the circumferential direction of the rotary elbow (2).

9. A method for using the smoke exhaust duct displacement mechanism according to any one of claims 1 to 8, characterized in that: The smoke exhaust comprises two modes: remote smoke exhaust and local smoke exhaust. When in the local smoke exhaust mode, the rotary cylinder (3) is in the retraction stroke, driving the rotary elbow (2) to rotate around the connection end thereof with the remote smoke exhaust vertical pipe (1), the rotary elbow (2) is gradually disconnected from the smoke exhaust fixed interface (19), the end of the rotary elbow (2) is suspended, the detection switch 2 (6) receives a signal, at this time, the thick smoke is discharged locally through the smoke exhaust fixed interface (19); when in the remote smoke exhaust mode, the rotary cylinder (3) is in the extension stroke, driving the rotary elbow (2) to rotate around the connection end thereof with the remote smoke exhaust vertical pipe (1), the rotary elbow (2) is gradually docked with the smoke exhaust fixed interface (19), after reaching the position, the detection switch 1 (5) receives a signal, at this time, the thick smoke passes through the rotary elbow (2) and the remote smoke exhaust vertical pipe (1) in sequence from the smoke exhaust fixed interface (19), and finally the fire smoke is led to an open area through the smoke exhaust hose (16) for discharge.

10. The method for using the smoke exhaust duct displacement mechanism according to claim 9, characterized in that: When the fire truck is in a driving state or a stopped state, the electrical control unit detects the current of the smoke exhaust fan motor to determine whether it is in a working state. If the fan is in a working state, it maintains the original state. Otherwise, it determines whether the detection switch 1 (5) receives a signal. If there is a signal, it maintains the original state. Otherwise, the electrical control unit controls the hydraulic power unit and the hydraulic control unit to provide energy to the rotating oil cylinder (3) of the air duct to extend. The mechanism switches to a remote smoke exhaust mode to prevent rainwater or dirt from entering the smoke exhaust port of the fan.

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