Smoke exhaust pipeline displacement mechanism and using method

Abstract

The invention discloses a smoke exhaust pipeline displacement mechanism and a use method thereof, a smoke exhaust fixed interface is arranged at a local smoke exhaust port of a smoke exhaust fire truck, a fan air outlet of the smoke exhaust fire truck is connected with the smoke exhaust fixed interface, and a remote smoke exhaust vertical pipe is mounted on the smoke exhaust fire truck; one end of the rotating elbow is rotationally connected with one end of the remote smoke exhaust vertical pipe through a rotating assembly, the other end of the rotating elbow is suspended or detachably connected with the smoke exhaust fixed connector through a movable connecting piece, a first detection switch is arranged on one side of the connecting position of the rotating elbow and the smoke exhaust fixed connector, and a second detection switch is arranged on one side of the suspended position; one end of the rotary oil cylinder is mounted on a carriage of the smoke exhaust fire truck through the rotary oil cylinder mounting seat, and the other end is connected with the outer side surface of the rotary elbow. The slewing bearing structure formed by the self-lubricating bearings is adopted, the structure size is compact, space arrangement is facilitated, and the slewing bearing can adapt to the high-temperature environment where smoke is exhausted and cannot be lubricated easily; the device can be designed into an assembled structure, and is convenient to process, install and maintain in the later period.

Description

Technical Field

[0001] The invention relates to a smoke exhaust mechanism of a smoke exhaust fire truck, and in particular to a smoke exhaust pipe displacement mechanism and a use method thereof. Background Art

[0002] A smoke exhaust fire truck is a special fire truck designed to deal with thick smoke in fire scenes. Its main working device is composed of a smoke exhaust system consisting of a fan, smoke exhaust ducts, etc. It is used for smoke exhaust or forced ventilation in fire scenes so that firefighters can enter burning buildings more effectively to carry out fire extinguishing and rescue work.

[0003] The work site of the smoke exhaust fire truck may be complex city streets, narrow alleys or open industrial parks. In crowded and complex city streets or narrow alleys, there are many residential communities around. The high temperature and toxicity of the fire smoke may cause scalds, burns, poisoning or flammable fires to the surrounding residential communities. At this time, the smoke needs to be led to an open area through the smoke exhaust pipe for smoke exhaust. In the industrial park, the smoke exhaust fire truck can exhaust smoke upwards on the spot in the open area, can be quickly deployed at the fire scene, and can start working without complicated preparations. This rapid response capability is crucial to timely control the fire and reduce the harm of smoke to personnel and the environment.

[0004] At present, the smoke exhaust fire trucks in the industry all use the fan's own posture adjustment to exhaust smoke on-site, or use the smoke exhaust pipe linear connection method to achieve remote smoke exhaust. They cannot meet the needs of multiple scenarios at the same time, resulting in great limitations in rescue. At the same time, configuring multiple smoke exhaust fire trucks with different functions to meet the dispatch of various scenarios will greatly increase the financial cost. Summary of the invention

[0005] Purpose of the invention: In view of the above problems, the purpose of the present invention is to provide a smoke exhaust duct displacement mechanism, which can switch the smoke exhaust channel mode according to the specific working site conditions, meet the needs of various scenarios, and be faster and more efficient. And provide its use method.

[0006] Technical solution: A smoke exhaust duct displacement mechanism, comprising a remote smoke exhaust riser, a rotating elbow, a rotating 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 truck, the fan outlet of the smoke exhaust fire truck is connected to the smoke exhaust fixed interface, the remote smoke exhaust riser is installed on the smoke exhaust fire truck, one end of the rotating elbow is rotatably connected to one end of the remote smoke exhaust riser through a rotating assembly, and the other end is suspended or detachably connected to the smoke exhaust fixed interface through a movable connecting piece, a detection switch 1 is provided on one side of the connection between the rotating elbow and the smoke exhaust fixed interface, and a detection switch 2 is provided on one side of the suspension, one end of the rotating cylinder is installed on the car body of the smoke exhaust fire truck through a rotating cylinder mounting seat, and the other end is connected to the outer side of the rotating elbow.

[0007] Furthermore, the rotating component includes self-lubricating bearing 1, self-lubricating bearing 2, self-lubricating bearing 3, fastener 1, end cover, and fastener 2. Lubricating bearing 1 and self-lubricating bearing 2 are respectively installed in the flange grooves at the port of the rotating elbow, and lubricating bearing 1 is close to the inside, and self-lubricating bearing 2 is close to the port of the rotating elbow. The port of the remote smoke exhaust vertical pipe is provided with a boss, the boss is penetrated into the rotating elbow, the end face of the boss is in contact with lubricating bearing 1, and the outer peripheral surface is in contact with self-lubricating bearing 2. The end cover is sleeved on the remote smoke exhaust vertical pipe, and self-lubricating bearing 3 is provided therebetween. Self-lubricating bearing 3 is assembled on the end cover through fastener 1, and the end cover is connected to the end face of the rotating elbow through fastener 2, so that self-lubricating bearing 3 is pressed tightly against the boss of the remote smoke exhaust vertical pipe.

[0008] Preferably, the self-lubricating bearing three and the end cover are of a multi-piece combination type, and the assembly is staggered at the joints.

[0009] Preferably, a sealing groove is provided between the boss of the remote smoke exhaust riser and the contact surface of the lubricating bearing 1, and an end face sealing member is provided in the sealing groove, and the cross section of the end face sealing member is circular or square.

[0010] Furthermore, the movable connecting part includes fastener three, a spring, a movable component, and a sealing part. The lower part of the movable component and the outlet end of the smoke exhaust fixed interface form a contact surface with a concave-convex structure, and the two are contact-connected. The spring sleeve is arranged on the upper part of the movable component, and a guide sleeve is arranged on the outer side surface of the rotating elbow. The upper part of the movable component is passed through the guide sleeve from one end until the spring and the end surface of the guide sleeve are abutted. Fastener three is passed through the guide sleeve from the other end and abuts against the movable component, so that the movable component and the smoke exhaust fixed interface are in a compressed state through the spring.

[0011] Preferably, the upper part of the movable component is a stud, and the lower part is a disc-shaped structure with a protrusion at the bottom, and a notch is correspondingly provided at the outlet end of the smoke exhaust fixed interface.

[0012] Optimally, a sealing member is provided between the contact surface of the movable component and the smoke exhaust fixed interface, the sealing member is embedded in the movable component, and the sealing member is an inflatable sealing member.

[0013] Preferably, a plurality of movable connecting members are provided at intervals in the circumferential direction of the rotary elbow.

[0014] A method for using the above-mentioned smoke exhaust pipe displacement mechanism, smoke exhaust includes two modes: remote smoke exhaust and local smoke exhaust. When in the local smoke exhaust mode, the rotating cylinder is in a retraction stroke, driving the rotating elbow to rotate around the connection end with the remote smoke exhaust riser, the rotating elbow is gradually disconnected from the smoke exhaust fixed interface, the port of the rotating elbow is suspended, and the detection switch 2 receives a signal. At this time, the thick smoke is discharged on-site through the smoke exhaust fixed interface; when in the remote smoke exhaust mode, the rotating cylinder is in an extension stroke, driving the rotating elbow to rotate around the connection end with the remote smoke exhaust riser, the rotating elbow is gradually docked with the smoke exhaust fixed interface, and after it is in place, the detection switch 1 receives a signal. At this time, the thick smoke passes through the rotating elbow and the remote smoke exhaust riser from the smoke exhaust fixed interface in turn, and finally the fire smoke is led to an open area through the smoke exhaust hose for discharge.

[0015] Optimally, when the fire truck is in driving or stopped state, the electrical control unit detects the current of the smoke exhaust fan motor to determine whether it is in working state. If the fan is in working state, it maintains the original state. Otherwise, it determines whether the detection switch 1 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 cylinder of the air duct to extend it, and the mechanism switches to remote smoke exhaust mode to prevent rain or dirt from entering the smoke exhaust port of the fan.

[0016] Beneficial effects: Compared with the prior art, the advantages of the present invention are:

[0017] 1. The slewing bearing structure composed of self-lubricating bearings has compact dimensions, which is conducive to space layout. At the same time, there is no need to lubricate the contact parts separately, and it can adapt to the high-temperature and difficult-to-lubricate working environment of smoke exhaust. It can be designed as an assembled structure, which is easy to process and install, and convenient for later maintenance;

[0018] 2. The oil cylinder rotates to switch the working mode of the smoke exhaust pipe. The structure is simple. The movable component dynamically presses the smoke exhaust fixed interface in real time through the spring, and adopts a special inflatable seal to ensure contact sealing, with high working reliability;

[0019] 3. Two sets of detection switches are used on the side of the movable component to determine the working status of the local smoke exhaust or remote smoke exhaust of the smoke exhaust pipe, which is accurate and convenient to operate;

[0020] 4. It automatically switches to remote exhaust mode when in driving or stopped state to prevent rain or dirt from entering the exhaust port of the fan, ensuring high working safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

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

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

[0024] Figure 4 for Figure 1 Zoomed in view Figure Ⅰ ;

[0025] Figure 5 for Figure 1 Zoomed in 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 in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0028] A smoke exhaust duct 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] A smoke exhaust fixed interface 19 is arranged at the on-site 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 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 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. A boss is provided at the port of the remote smoke exhaust riser 1, and the boss is penetrated in the rotating elbow 2. The end face of the boss contacts with 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 with the self-lubricating bearing 2 9, and the end cover 12 is sleeved on the remote smoke exhaust vertical pipe 1, and a self-lubricating bearing 3 10 is arranged 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 surface 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, and together constitute a rotating connection pair of the remote smoke exhaust vertical pipe 1 and the rotating elbow 2.

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

[0031] The other end of the swivel elbow 2 is suspended or detachably connected to the smoke exhaust fixed interface 19 through a movable connecting piece. A plurality of movable connecting pieces are arranged at circumferential intervals on the swivel elbow 2. The movable connecting piece includes a fastener 14, a spring 15, a movable component 17, and a seal 18. The upper part of the movable component 17 is a stud, and the lower part is a disc-shaped structure with a convex bottom. A recess is correspondingly provided at the outlet end of the smoke exhaust fixed interface 19. The lower part of the movable component 17 and the outlet end of the smoke exhaust fixed interface 19 form a contact surface of a concave-convex structure, and the two are contact-connected. A seal 18 is provided between the contact surface of the movable component 17 and the smoke exhaust fixed interface 19. The seal 18 is embedded in the movable component 17, and the seal 18 is an inflatable seal. The spring 15 is sleeved on the outer circumferential surface of the upper stud of the movable component 17, and a guide sleeve is provided on the outer side surface of the rotating elbow 2. The upper part of the movable component 17 is passed through one end of the guide sleeve until the spring 15 and the end surface of the guide sleeve are abutted. The fastener three 14 is passed through the other end of the guide sleeve and abuts against 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.

[0032] 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 cylinder 3 is installed on the car body of the smoke exhaust fire truck through the rotating cylinder mounting seat 4, and the other end is connected to the outer side of the rotating elbow 2.

[0033] The telescopic action of the rotating cylinder 3 drives the rotating elbow 2 to rotate. The displacement of the smoke exhaust pipe is mainly achieved by switching the smoke exhaust channel mode through the telescopic action of the rotating cylinder 3. At the same time, the connection and disconnection of the channel are achieved through the docking device composed of the movable component 17 and the smoke exhaust fixed interface 19.

[0034] The method of using the above-mentioned smoke exhaust pipe displacement mechanism includes two modes, a remote smoke exhaust mode and a local smoke exhaust mode. When in the local smoke exhaust mode, the rotating cylinder 3 is in a retraction stroke, driving the rotating elbow 2 to rotate around its connection end with the remote smoke exhaust riser 1, and the rotating elbow 2 is gradually disconnected from the smoke exhaust fixed interface 19. The port of the rotating elbow 2 is suspended, and 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 rotating cylinder 3 is in an extension stroke, driving the rotating elbow 2 to rotate around its connection end with the remote smoke exhaust riser 1, and the rotating elbow 2 is gradually docked with the smoke exhaust fixed interface 19. After it is in place, the detection switch 1 5 receives a signal. At this time, the thick smoke passes through the rotating elbow 2 and the remote smoke exhaust riser 1 from the smoke exhaust fixed interface 19 in turn, and finally the fire smoke is led to an open area through the smoke exhaust hose 16 for discharge.

[0035] like Figure 6As shown, when the fire truck is in the driving state or the stopped state, the electrical control unit detects the current of the smoke exhaust fan motor to determine whether it is in the working state. If the fan is in the working state, it maintains the original state, otherwise it determines whether the detection switch 15 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 cylinder 3 of the air duct to extend, and the mechanism switches to the remote smoke exhaust mode to prevent rain or dirt from entering the smoke exhaust port of the fan, thereby improving work safety.

Claims

1. A smoke exhaust duct displacement mechanism, characterized in that: The invention comprises a remote smoke exhaust vertical pipe (1), a rotating elbow pipe (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 fan of the smoke exhaust fire truck 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 pipe (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 arranged on one side of the connection between the rotating elbow pipe (2) and the smoke exhaust fixed interface (19), and a detection switch 2 (6) is arranged 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 pipe (2).

2. A smoke exhaust duct displacement mechanism according to claim 1, characterized in that: The rotating assembly comprises 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 grooves 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 penetrated into the rotating elbow. (2), the end face of the boss contacts the lubricating bearing 1 (7), and the outer peripheral face 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 arranged between the two. The self-lubricating bearing 3 (10) is assembled on the end cover (12) through the fastener 1 (11), and 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. A 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, with staggered joints in an assembled manner.

4. A 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 1 (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 member comprises a third fastener (14), a spring (15), a movable assembly (17), and a sealing member (18). The lower part of the movable assembly (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 assembly (17). A guide sleeve is provided on the outer surface of the rotary elbow (2). The upper part of the movable assembly (17) is inserted through the guide sleeve from one end until the spring (15) and the end surface of the guide sleeve are in contact. The third fastener (14) is inserted through the guide sleeve from the other end and is in contact with 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).

6. A 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, and a notch is correspondingly provided at the outlet end of the smoke exhaust fixed interface (19).

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 the sealing member (18) 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, namely, remote smoke exhaust and local smoke exhaust. When in the local smoke exhaust mode, the rotary cylinder (3) is in a retracting stroke, driving the rotary elbow (2) to rotate around its connection end 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, and 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 an extending stroke, driving the rotary elbow (2) to rotate around its connection end with the remote smoke exhaust vertical pipe (1), the rotary elbow (2) is gradually docked with the smoke exhaust fixed interface (19), and the detection switch 1 (5) receives a signal after being in place. At this time, the thick smoke passes through the rotary elbow (2) and the remote smoke exhaust vertical pipe (1) from the smoke exhaust fixed interface (19) in sequence, 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 remains in the original state. Otherwise, it determines whether the detection switch 1 (5) receives a signal. If there is a signal, it remains in the original state. Otherwise, the electrical control unit controls the hydraulic power unit and the hydraulic control unit to provide energy to the rotating cylinder (3) of the air duct to extend, and the mechanism switches to a remote smoke exhaust mode to prevent rain or dirt from entering the smoke exhaust port of the fan.

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