CN111717757A

CN111717757A - Fire control air pipe construction lift system

Info

Publication number: CN111717757A
Application number: CN202010498034.3A
Authority: CN
Inventors: 郑晨飞; 贺筱筱; 郭小辉; 李文洲
Original assignee: Henan Yuxiao Building Fire Protection Installation Engineering Co ltd
Current assignee: Henan Yuxiao Building Fire Protection Installation Engineering Co ltd
Priority date: 2020-06-04
Filing date: 2020-06-04
Publication date: 2020-09-29
Anticipated expiration: 2040-06-04
Also published as: CN111717757B

Abstract

The invention relates to the field of fire-fighting construction, and discloses a fire-fighting ventilation pipeline construction lifting system which comprises a box body and a lifting mechanism for lifting a container, wherein an opening is formed in one side of the box body, a safety door is arranged at the opening, the container for containing fire-fighting equipment is additionally arranged on the inner side of the box body, a driving assembly is arranged on one side of the container, the driving assembly comprises a first driving piece, a piston is arranged at the output end of the first driving piece, a sealed pipeline assembly is arranged on one side, away from the opening, of the container, the pipeline assembly comprises a driving pipe, a sealed push pipe is inserted into the driving pipe, a piston is inserted into the inner side. When the fire fighting device works, the first driving piece drives the piston to move along the pushing pipe and compress liquid in the driving pipe, the liquid slowly pushes the driving pipe to move, the container is further driven to slowly move towards the opening, driving vibration is reduced, and the fire fighting tool is prevented from falling to the ground from two sides by means of the shape of the container.

Description

Fire control air pipe construction lift system

Technical Field

The invention relates to the technical field of fire fighting construction, in particular to a construction lifting system for a fire fighting ventilation pipeline.

Background

The fire construction engineering often needs to use hoisting device to promote fire-fighting facilities etc. to corresponding floor, then carries out installation work etc..

In the prior art, referring to a chinese utility model patent with an authorization bulletin number of CN209456013U, a hoisting machine for fire engineering construction is disclosed, which comprises two supports, a first support plate, a first servo motor, a rotating rod, a reel, a steel wire rope, and a box body, wherein the first support plate is fixedly installed at the tops of the two supports, the first servo motor is fixedly installed at the top of the first support plate, and the rotating rod is fixedly installed on an output shaft of the first servo motor; the two reels are fixedly arranged on the top of the first supporting plate, and are fixedly sleeved on the rotating rod; one ends of the two steel wire ropes are respectively and fixedly connected with the two reels; the top of the box body is fixed at one end of the steel wire rope, which is far away from the reel.

A second servo motor is fixedly arranged on the inner wall of the bottom of the box body, and a motor screw rod is fixedly connected with the second servo motor and is connected with the other screw rod through a belt pulley; the screw rod is in threaded connection with a sliding plate, and a second supporting plate is fixedly mounted at the top of the sliding plate. When the box is used, the box body is driven to lift through the first servo motor, and after the box body reaches a corresponding floor, the fire-fighting installation tool on the upper side of the second support plate is driven to move and be sent out through the second servo motor.

The above prior art solutions have the following drawbacks: when the elevator is used, the second servo motor is needed to drive the screw rod to rotate, so that the second supporting plate is driven to move towards the opening, and a platform is built between the box body and the floor, so that a gap between the box body and the floor is shielded, but in actual use, fire fighting facilities are easy to fall off from two sides of the second supporting plate due to the fact that blocking mechanisms are not arranged on two sides of the second supporting plate; and can take place the vibration at the in-process of second servo motor work, the in-process of vibration leads to the fire control mounting tool to rock easily and drops from the eminence, has reduced the security performance of lifting machine.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a lifting system for fire fighting ventilation pipeline construction, which reduces the possibility that fire fighting facilities fall from a high place, thereby improving the safety performance of a lifting device.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides a fire control air pipe construction hoist system, includes the hoist mechanism of box and lift packing box, box one side is equipped with the opening, the opening part is equipped with the emergency exit, the box inboard is equipped with the packing box that holds fire-fighting equipment in addition, packing box one side is equipped with drive assembly, drive assembly includes first driving piece, the output of first driving piece is equipped with the piston, the packing box is kept away from open-ended one side and is equipped with sealed pipe assembly, pipe assembly includes the driving tube, the driving tube pegs graft and is equipped with sealed promotion pipe, the piston pegs graft in the promotion pipe and keeps away from the inboard of driving tube one end, be full of liquid in the promotion pipe.

Through adopting above-mentioned technical scheme, when needs hoisting device promotes the fire-fighting equipment, place the fire-fighting equipment in the packing box, promote the box with the help of hoist mechanism, after the box promotes to corresponding floor, open the emergency exit, first driving piece drives the piston and removes to the one end that is close to the driving tube along the propulsion pipe, and then compress the intraductal liquid of driving tube, make liquid slowly promote the driving tube and remove, and then drive the packing box and remove to being close to the opening part, make the packing box slowly move with the help of compressed liquid, lead to the fire-fighting equipment to drop by the eminence when having avoided the drive vibration, the packing box is built gradually between box and corresponding floor, avoid the fire control mounting tool to drop to ground by both sides with the help of the shape of.

The present invention in a preferred example may be further configured to: the container is provided with a rotating shaft along the direction parallel to the safety door, the container is rotatably connected with the box body through the rotating shaft, one end, away from the pushing pipe, of the driving pipe is provided with an inclined connecting pipe, and the connecting pipe is rotatably connected with the container.

Through adopting above-mentioned technical scheme, after the fire control facility reachd appointed floor, can the axis of rotation for the axle rotates the packing box for the packing box slope, thereby lift off the fire control mounting tool more conveniently.

The present invention in a preferred example may be further configured to: the driving pipe is communicated with the connecting pipe, the connecting pipe is inserted and communicated with an installation pipe, liquid is filled in the installation pipe, and one end, far away from the connecting pipe, of the installation pipe is closed and is rotatably connected with the bottom surface of the container.

Through adopting above-mentioned technical scheme, after first driving piece starts, the inboard liquid of piston compression pipe assembly, at first the installation pipe is promoted and then supports the packing box for the packing box uses the axis of rotation to overturn as the axial and incline, is stretched to the longest as the installation pipe, and first driving piece continues to drive the piston and removes and make propelling movement pipe and driving tube remove, promotes the packing box to being close to the opening part, thereby releases the packing box of slope.

The present invention in a preferred example may be further configured to: a first sealing ring for sealing the pushing pipe and the driving pipe is arranged between the pushing pipe and the driving pipe, and a second sealing ring for sealing the connecting pipe and the mounting pipe is arranged between the connecting pipe and the mounting pipe.

Through adopting above-mentioned technical scheme, will promote through first sealing ring and seal the junction between pipe and the driving tube, it is sealed between with the help of the second sealing ring with connecting pipe and installation pipe, improve the leakproofness between propelling movement pipe and the driving tube and the leakproofness between connecting pipe and the installation pipe.

The present invention in a preferred example may be further configured to: one side of the driving pipe is provided with a first spring, one end of the first spring is fixed with the first driving piece, and the other end of the first spring is fixed with the connecting pipe.

Through adopting above-mentioned technical scheme, drive the piston and remove when first driving piece for when the driving tube changes with the push tube overlap portion, constitute a pulling force to the packing box with the help of the elasticity of first spring, thereby further remove to the packing box and provide a buffering, reduce then the packing box because remove the unstable condition emergence of too fast fire control mounting tool.

The present invention in a preferred example may be further configured to: the bottom surface of the container is provided with a sliding plate, the sliding plate is rotatably connected with the container through a rotating shaft, sliding blocks are arranged on the sliding plate along the two sides of the moving direction of the container, a sliding groove is formed in the inner wall of the container, and the sliding blocks are slidably connected with the sliding groove.

Through adopting above-mentioned technical scheme, the slider follows the slide in the box to carry out spacingly with the help of the slider to the slide, thereby carry on spacingly to the packing box, make the packing box more stable when removing.

The present invention in a preferred example may be further configured to: the improved cargo container is characterized in that a magnetic strip is arranged on the upper surface of the sliding plate, a metal strip is arranged on the bottom surface of the cargo container, and the magnetic strip is in contact with the metal strip when the upper surface of the sliding plate is abutted against the bottom surface of the cargo container.

Through adopting above-mentioned technical scheme, with the help of inter attraction between magnetic stripe and the metal strip for the slide supports the packing box more stably, reduces the box and rocks the condition that the in-process leads to the packing box skew, and when the packing box upset back resumes to the horizontality, can provide the power of an upset for the packing box with the help of the magnetic stripe simultaneously.

The present invention in a preferred example may be further configured to: and a second spring is arranged on one side of the cargo box close to the first driving piece, the lower end of the second spring is fixed with the inner bottom surface of the box body, and when the cargo box is in a horizontal state, the second spring is compressed.

Through adopting above-mentioned technical scheme, resume to the in-process of horizontality after the packing box upset, take place the striking easily between packing box and the slide, cushion the packing box with the help of the second spring this moment, reduce the wearing and tearing when packing box and slide striking.

The present invention in a preferred example may be further configured to: and a fixing rod is arranged on the inner side of the second spring during insertion, and the height of the upper end of the fixing rod is lower than that of the upper surface of the sliding plate.

Through adopting above-mentioned technical scheme, carry on spacingly with the help of the orbit of fixed rod to the second spring, prevent that the in-process that the second spring compressed from taking place deformation bending etc..

The present invention in a preferred example may be further configured to: one side of the container, which is far away from the first driving piece, is provided with a box door which can be opened and closed.

Through adopting above-mentioned technical scheme, when needs loading and unloading fire control facility, the packing box upset removes the back, can open the chamber door to be convenient for load and unload.

In summary, the invention includes at least one of the following beneficial technical effects:

1. when needs hoisting device promotion fire control facility, place the fire control facility in the packing box, promote the box with the help of hoist mechanism, after the box promotes corresponding floor, open the emergency exit, first driving piece drives the piston and moves to the one end that is close to the driving tube along the propulsion pipe, and then compress the intraductal liquid of driving, make liquid slowly promote the driving tube and remove, and then drive the packing box and move to being close to the opening part, make packing box slow moving with the help of the compressed liquid, lead to the fire control facility to drop by the eminence when having avoided the drive vibration, the packing box is built gradually between box and corresponding floor, avoid the fire control mounting tool to drop to ground by both sides with the help of the shape of packing box, and then improved fire control. (ii) a

2. When the first driving piece is started, the piston compresses hydraulic oil on the inner side of the pipeline assembly, the mounting pipe is pushed to upwards abut against the container, the container is made to upwards overturn and incline by taking the rotating shaft as an axial direction, and when the mounting pipe is stretched to the longest length, the first driving piece continues to drive the piston to move, so that the pushing pipe and the driving pipe move, the container is pushed to the position close to the opening, and the inclined container is pushed out;

3. when first driving piece drives the piston and removes for the driving tube constitutes a pulling force with the help of the elasticity of first spring to the packing box when pushing away the pipe overlap portion and changing, thereby further provides a buffering to the packing box removal, reduces then the packing box and takes place owing to removing the unstable condition of too fast fire control mounting tool.

Drawings

Fig. 1 is a schematic structural view of a lifting device for fire construction;

FIG. 2 is a first cross-sectional view of the loading mechanism;

FIG. 3 is a partial schematic structural view of a loading mechanism embodying the structure of the tube assembly;

FIG. 4 is a partial schematic view of a piping assembly embodying the structure of the connecting pipe and the mounting pipe;

FIG. 5 is a second cross-sectional view of the loading mechanism;

FIG. 6 is an enlarged view of a portion A of FIG. 3 showing the construction of the push tube and the drive tube;

FIG. 7 is a third cross-sectional view of the loading mechanism;

FIG. 8 is a partial schematic structural view of the connection between the tube assembly and the cargo container;

FIG. 9 is a cross-sectional view of the cargo loading mechanism embodying the connection between the skid plate and the cargo box;

FIG. 10 is a schematic view of a second spring mounting position.

In the figure, 1, a support frame; 11. a horizontal plate; 12. a support plate; 2. a lifting mechanism; 21. a second driving member; 22. a reel; 23. a wire rope; 24. a linkage rod; 3. a loading mechanism; 31. a box body; 311. an opening; 312. a safety door; 313. a chute; 315. a second spring; 316. fixing the rod; 317. a fixed box; 32. a cargo box; 321. a rotating shaft; 322. a shaft body; 323. a box door; 324. a metal strip; 325. mounting a sheet; 33. a slide plate; 331. inserting grooves; 332. a magnetic strip; 333. a round roller; 334. a slider; 34. a drive assembly; 341. a first driving member; 342. a piston; 343. a first spring; 35. a conduit assembly; 351. pushing the pipe; 352. a drive tube; 3521. a fixing sheet; 353. a connecting pipe; 354. installing a pipe; 355. a first seal ring; 356. a second seal ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the lifting system for fire fighting ventilation duct construction disclosed by the invention comprises a support frame 1, wherein a loading mechanism 3 for placing fire fighting equipment is arranged on the inner side of the support frame 1, and a lifting mechanism 2 for lifting the loading mechanism 3 is arranged between the support frame 1 and the loading mechanism 3.

The support frame 1 comprises an uppermost horizontal plate 11, and two vertical support plates 12 are fixed to the lower sides of two parallel edges of the horizontal plate 11. The loading mechanism 3 includes a box 31, and the box 31 is limited between the two support plates 12 and ascends and descends along the support plates 12 in the vertical direction. The lifting mechanism 2 comprises a second driving member 21, the second driving member 21 is determined according to actual conditions, the second driving member 21 is a motor, a linkage rod 24 is fixed at the output end of the motor, and a reel 22 is fixed at the outer side of each of two ends of the linkage rod 24. The outer side of each reel 22 is surrounded by a steel wire rope 23, and the lower end of the steel wire rope 23 is fixed with the upper surface of the box body 31.

When the box body 31 needs to be lifted, the linkage rod 24 is driven to rotate through the second driving piece 21, and then the two reels 22 are driven to rotate, so that the steel wire rope 23 is wound or unwound, and the box body 31 is lifted or lowered.

An opening 311 is arranged on one side of the box body 31 which is not contacted with the support plate 12, and a safety door 312 which can be opened and closed is arranged at the opening 311. The cargo loading mechanism 3 further comprises a cargo box 32, the cargo box 32 being located inside the box 31 and being used for placing fire fighting equipment. The container 32 may also have a door 323 that is openable adjacent to the opening 311, and the door 323 may be flipped open downward.

Referring to fig. 1 and 2, a fixed box 317 is fixed to a side of the cargo box 32 away from the box door 323, and two driving assemblies 34 are disposed in the fixed box 317, where the number of the driving assemblies 34 can be determined according to the actual situation. The driving assembly 34 includes a first driving member 341, and the first driving member 341 may be determined according to the actual situation, where the first driving member 341 is a cylinder.

Referring to fig. 3 and 4, the output end of the first driving member 341 is provided with a pipe assembly 35, and the pipe assembly 35 is filled with hydraulic oil. The pipe assembly 35 comprises a push pipe 351, a driving pipe 352 is sleeved on the outer side of the push pipe 351, the push pipe 351 and the driving pipe 352 are sealed pipes, and one end, far away from the driving pipe 352, of the push pipe 351 is connected with the container 32. In the initial position, the overlapping portion of the push pipe 351 and the driving pipe 352 is longest, and the push pipe 351 is filled with hydraulic oil at this time.

Referring to fig. 4, two first sealing rings 355 are disposed between the push tube 351 and the drive tube 352, wherein an outer ring of one first sealing ring 355 is fixed to the drive tube 352, and an inner ring of the one first sealing ring is abutted against the push tube 351; the other first sealing ring 355 abuts the drive tube 352 at its outer circumference and is fixed at its inner circumference to the push tube 351, thereby sealing the push tube 351 to the drive tube 352.

Referring to fig. 3 and 4, a piston 342 having a cross-sectional shape equal to that of the push pipe 351 is fixed to an end of a piston rod of the first driving member 341, and when the fire-fighting equipment in the cargo box 32 needs to be loaded and unloaded, the piston 342 is pushed by the first driving member 341 to move, and the piston 342 compresses hydraulic oil in the push pipe 351; the hydraulic oil in the pushing pipe 351 is compressed to push the driving pipe 352 to move; the drive tube 352 moves to push the container 32 to slide, thereby building the container 32 between the container 31 and the corresponding floor.

Referring to fig. 2 and 5, a rectangular parallelepiped slide plate 33 is provided on the bottom surface of the cargo box 32, a plurality of round rollers 333 are provided on the bottom surface of the slide plate 33, one slide block 334 is provided on each of both sides of the slide plate 33 in the moving direction of the cargo box 32 in an extending manner, two parallel slide grooves 313 are provided on the inner side of the box body 31, the slide blocks 334 slide in the slide grooves 313, and one end of the slide grooves 313 close to the opening 311 is closed, thereby limiting the moving range of the slide blocks 334. When the container 32 moves, the slide plate 33 is driven to move, and the movement locus of the container 32 is restricted by the slide block 334 and the chute 313, thereby reducing the occurrence of vibration deviation of the container 32.

Referring to fig. 3 and 6, one end of the driving pipe 352, which is far from the pushing pipe 351, is inserted into the inside of the case 31 and is communicated with a connection pipe 353, the connection pipe 353 is vertically provided to the driving pipe 352, and an installation pipe 354 is inserted into the connection pipe 353. In the initial position, the connection pipe 353 overlaps the driving pipe 352 to the maximum extent, and the mounting pipe 354 is filled with hydraulic oil.

The opposite ends of the mounting pipe 354 and the connecting pipe 353 are respectively provided with a second sealing ring 356, the outer ring of one second sealing ring 356 is abutted against the connecting pipe 353, the inner ring of the second sealing ring 356 is fixed with the mounting pipe 354, the inner ring of the other second sealing ring 356 is abutted against the mounting pipe 354, and the outer ring of the second sealing ring is fixed with the connecting pipe 353. The connecting pipe 353 and the mounting pipe 354 are sealed by the second sealing ring 356, so that the phenomenon that a large amount of hydraulic oil flows out from the connection position of the mounting pipe 354 and the connecting pipe 353 to influence the use of the pipeline assembly 35 is avoided.

Referring to fig. 7 and 8, the upper end of the mounting pipe 354 is rotatably connected to the cargo box 32, two sets of mounting pieces 325 are provided on the bottom surface of the cargo box 32, the number of the mounting pieces 325 in each set is two, and the upper ends of the mounting pieces 325 are fixed to the cargo box 32. The mounting pipe 354 is interposed between the two mounting pieces 325, and is provided with a shaft body 322, and the mounting pieces 325 and the mounting pipe 354 are rotatably connected via the shaft body 322. And in the initial position, the mounting tube 354 is not in line with the mounting tab 325.

Referring to fig. 7 and 9, a rotation shaft 321 is provided at an edge of the slide plate 33 adjacent to the door 323, and the cargo box 32 is rotatably coupled to the slide plate 33 via the rotation shaft 321, so that the cargo box 32 can be turned upward about the rotation shaft 321.

Referring to fig. 7 and 10, when the first driving member 341 operates, the piston 342 (see fig. 3) presses hydraulic oil in the pipe assembly 35, the hydraulic oil is compressed to first push the mounting pipe 354 to move upward, so that the cargo box 32 turns upward around the rotating shaft 321 as an axial direction, when the pipe in the vertical portion is at the longest length, the mounting pipe 354 does not move any more, and at this time, the piston 342 (see fig. 3) continues to press the hydraulic oil in the pipe assembly 35 to drive the driving pipe 352 to move, so as to drive the cargo box 32 to slide to a side away from the first driving member 341.

Referring to fig. 7, two first springs 343 are disposed between the cargo box 32 and each pipe assembly 35, and a fixing plate 3521 is fixed to an outer side of one end of the driving pipe 352 near the connection pipe 353, such that one end of the first spring 343 is fixed to the first driving member 341, and the other end thereof is fixed to the fixing plate 3521. When the first driving member 341 slides the container 32, the container 32 is buffered by the first spring 343, so as to reduce the moving speed of the container 32, and the container 32 moves more stably.

Referring to fig. 9, the upper surface of the sliding plate 33 is provided with an insertion groove 331 along a direction parallel to the rotation axis 321, and a cross-sectional shape of the insertion groove 331 perpendicular to a length direction thereof is arc-shaped. The magnetic strip 332 is fixed at the bottom of the insertion groove 331, the metal strip 324 is fixed at the bottom of the container 32, the metal strip 324 is inserted into the insertion groove 331, and the metal strip 324 and the magnetic strip 332 are fixed more firmly by virtue of the magnetism of the magnetic strip 332. When the box 31 shakes, the cargo box 32 is more stable and less prone to shift due to the attraction between the metal strips 324 and the magnetic strips 332.

Referring to fig. 7 and 10, a second spring 315 is disposed on a bottom surface of the cargo box 32 near the first driving member 341, a lower end of the second spring 315 is fixed to the inner bottom surface of the box 31, and the second spring 315 is compressed when the cargo box 32 is in a horizontal state. When the container 32 is turned over and then returns to the original shape, the second spring 315 can be used for buffering the container 32, so that the abrasion caused by collision in the process of collision between the container 32 and the sliding plate 33 is reduced. A vertical fixing rod 316 is inserted into the second spring 315, the lower end of the fixing rod 316 is fixed to the inner bottom surface of the box 31, and the upper end of the fixing rod 316 is lower than the upper surface of the sliding plate 33. The fixing rod 316 limits the expansion track of the second spring 315, so as to prevent the second spring 315 from bending and the like.

The implementation process is as follows:

when the box body 31 needs to be lifted, the linkage rod 24 is driven to rotate through the second driving piece 21, and then the reel 22 is driven to rotate, so that the steel wire rope 23 is wound or unwound, and the box body 31 is lifted or lowered.

When the first driving member 341 works, the piston 342 presses the hydraulic oil in the pipe assembly 35, the hydraulic oil is compressed to first push the mounting pipe 354 to move upward, so that the cargo box 32 turns upward with the rotating shaft 321 as an axial direction, and when the pipe in the vertical portion is at the longest length, the mounting pipe 354 does not move any more, at this time, the piston 342 continues to press the hydraulic oil in the pipe assembly 35 to drive the driving pipe 352 to move, so that the cargo box 32 is driven to slide to one side far away from the first driving member 341.

When the container 32 is restored, the first driving member 341 drives the piston 342 to contract, so as to respectively contract the mounting pipe 354 and the driving pipe 352 into the connecting pipe 353 and the pushing pipe 351, and at this time, the second spring 315 is used for buffering the container 32, so that the abrasion caused by collision in the process of collision between the container 32 and the sliding plate 33 is reduced.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a fire control air pipe construction lift system, includes hoist mechanism (2) of box (31) and lift packing box (32), box (31) one side is equipped with opening (311), opening (311) department is equipped with emergency exit (312), its characterized in that: the inside of the box body (31) is additionally provided with a container (32) for containing fire-fighting equipment, one side of the container (32) is provided with a driving assembly (34), the driving assembly (34) comprises a first driving piece (341), the output end of the first driving piece (341) is provided with a piston (342), one side, far away from the opening (314) (311), of the container (32) is provided with a sealed pipeline assembly (35), the pipeline assembly (35) comprises a driving pipe (352), the driving pipe (352) is provided with a sealed pushing pipe (351) in an inserted mode, the piston (342) is inserted into the inner side, far away from one end of the driving pipe (352), of the pushing pipe (351), and liquid is filled in the pushing pipe (351).

2. The fire fighting ventilation duct construction lifting system according to claim 1, characterized in that: the container (32) is provided with a rotating shaft (321) along a direction parallel to the safety door (312), the container (32) is rotatably connected with the container (31) through the rotating shaft (321), one end, away from the first driving piece (341), of the driving pipe (352) is provided with an inclined mounting pipe (354), and the mounting pipe (354) is rotatably connected with the container (32).

3. The fire fighting ventilation duct construction lifting system according to claim 2, characterized in that: the driving pipe (352) is communicated with a connecting pipe (353), the connecting pipe (353) is inserted and communicated with a mounting pipe (354), liquid is filled in the mounting pipe (354), and one end, far away from the connecting pipe (353), of the mounting pipe (354) is closed and is rotatably connected with the bottom surface of the container (32).

4. The fire fighting ventilation duct construction lifting system according to claim 3, characterized in that: a first sealing ring (355) for sealing the pushing pipe (351) and the driving pipe (352) is arranged between the pushing pipe and the driving pipe, and a second sealing ring (356) for sealing the connecting pipe (353) and the mounting pipe (354) is arranged between the connecting pipe (353) and the mounting pipe (354).

5. The fire fighting ventilation duct construction lifting system according to claim 3, characterized in that: one side of the driving pipe (352) is provided with a first spring (343), one end of the first spring (343) is fixed with the first driving piece (341), and the other end of the first spring (343) is fixed with the connecting pipe (353).

6. The fire fighting ventilation duct construction lifting system according to claim 2, characterized in that: the bottom surface of the container (32) is provided with a sliding plate (33), the sliding plate (33) is rotatably connected with the container (32) through a rotating shaft (321), sliding blocks (334) are arranged on the sliding plate (33) along the two sides of the moving direction of the container (32), a sliding groove (313) is formed in the inner wall of the container (31), and the sliding blocks (334) are slidably connected with the sliding groove (313).

7. The fire fighting ventilation duct construction lifting system according to claim 6, characterized in that: the upper surface of the sliding plate (33) is provided with a magnetic strip (332), the bottom surface of the container (32) is provided with a metal strip (324), and when the upper surface of the sliding plate (33) is abutted against the bottom surface of the container (32), the magnetic strip (332) is contacted with the metal strip (324).

8. The fire fighting ventilation duct construction lifting system according to claim 7, characterized in that: a second spring (315) is arranged on one side of the container (32) close to the first driving piece (341), the lower end of the second spring (315) is fixed with the inner bottom surface of the container (31), and when the container (32) is in a horizontal state, the second spring (315) is compressed.

9. The fire fighting ventilation duct construction lifting system according to claim 8, characterized in that: when the inner side of the second spring (315) is inserted, a fixed rod (316) is arranged, and the height of the upper end of the fixed rod (316) is lower than that of the upper surface of the sliding plate (33).

10. The fire fighting ventilation duct construction lifting system according to claim 2, characterized in that: the side of the container (32) far away from the first driving piece (341) is provided with a door (323) which can be opened and closed.