Blast furnace air pipe dismounting and mounting device

Abstract

The utility model discloses a blast furnace air duct dismounting and mounting device, which relates to the technical field of metallurgical equipment, and comprises a carrying trolley, a first lifting support frame, a second lifting support frame, a first limiting piece and a second limiting piece, the first lifting support frame is arranged at the top of the carrying part, and the first lifting support frame limits the longitudinal direction of the air pipe; the second lifting support frame is arranged at the top of the carrying part and is arranged on one side of the first lifting support frame; the second lifting support frame is used for limiting the longitudinal direction of the air pipe; one end of the first limiting piece is used for fixing the side, close to the carrying part, of the vehicle head, and the first limiting piece can limit the air pipe in the transverse direction; the first limiting piece and the second limiting piece are arranged in parallel, one end of the second limiting piece is used for fixing a vehicle head, the second limiting piece can limit the air pipe in the transverse direction, the structure is simple, use is convenient, the labor efficiency is effectively improved, and operation safety is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to metallurgical equipment technical field, especially a kind of high furnace air pipe dismounting device. BACKGROUND

[0002] In the process of blast furnace ironmaking, raw fuel such as ore coke is loaded through the furnace top, and the air pipe, as a key component, sends high-temperature gas into the furnace, causing the iron ore to be continuously heated, decomposed, reduced, melted and dripped, etc. This process is not only complex and variable, but also affected by factors such as the furnace environment, resulting in some incomplete melting furnace charge, slag iron and other mixtures, or sticking to the furnace wall, or staying in the inactive area, etc. Under certain conditions, these substances can block the air pipe.

[0003] Common air pipe blockage conditions include the following:

[0004] Excessive powder: After being blown by the airflow in the blast furnace, it is easy to enter the air pipe with the coal gas, causing the air pipe to be blocked.

[0005] Low furnace charge strength: The powder produced by the broken furnace charge increases the risk of air pipe blockage.

[0006] Improper air volume control: Excessive air volume or severe fluctuations may cause unstable airflow in the furnace, carrying a large amount of furnace charge powder into the air pipe.

[0007] Uneven distribution of material: Uneven distribution of material can lead to unreasonable airflow distribution in the furnace, excessive local airflow, and easy entry of powder into the air pipe.

[0008] Lance blockage or damage: If the lance is blocked or damaged, it may cause the injection material to not enter the furnace normally, but instead enter the air pipe and cause blockage.

[0009] Air pipe damage: Cracks or damage to the air pipe may suck in furnace charge or other debris during operation, causing blockage.

[0010] Therefore, air pipe blockage is one of the common faults of blast furnaces, and when this situation occurs, the air pipe must be replaced and repaired in a timely manner. When disassembling using the traditional method, there are still some problems, as described below:

[0011] Traditional disassembly relies on a large amount of manual labor, with low efficiency;

[0012] Limited working space, unable to achieve standardized operation, difficult to operate, and the air pipe may be damaged during disassembly;

[0013] Traditional methods are difficult to adjust the height and position of the air pipe, with many hidden dangers. UTILITY MODEL CONTENTS

[0014] The utility model discloses a purpose is to provide a blast furnace air pipe dismounting device to solve the above-mentioned prior art problem, simple structure, convenient to use, effectively improve the labor efficiency, effectively guarantee the operation safety.

[0015] To achieve the above object, the utility model provides the following scheme:

[0016] The utility model provides a blast furnace air pipe dismounting device, include: the carrier trolley, first elevating support frame, second elevating support frame, first stop piece and second stop piece, the carrier trolley can move and keep the position after moving, the carrier trolley includes the carrying part and the car head, first elevating support frame sets up at the top of carrying part, and first elevating support frame can rise or fall to support the bottom of air pipe and can limit the longitudinal direction of air pipe, second elevating support frame sets up at the top of carrying part and sets up at one side of first elevating support frame, and second elevating support frame can rise or fall to support the bottom of air pipe and can limit the longitudinal direction of air pipe, one end of first stop piece is used for the car head to fix one side close to carrying part, and first stop piece can lengthen or shorten to pass through the U shape hole of one side inclined tendon of air pipe and top tightly air pipe in car head to limit air pipe in transverse direction, first stop piece and first stop piece parallel arrangement, one end of second stop piece is used for car head fixed, and second stop piece can lengthen or shorten to pass through the U shape hole of the other side inclined tendon of air pipe and top tightly air pipe in car head to limit air pipe in transverse direction.

[0017] Preferably, the first elevating support frame includes a first support platform, a first scissor support arm, a second scissor support arm, and a first lifting cylinder. One end of the first scissor support arm and the second scissor support arm on the same side is hingedly connected to the carrying part. The other end of the first scissor support arm and the second scissor support arm on the same side is slidingly connected to the carrying part. The top of the first scissor support arm and the second scissor support arm is hingedly connected to the first support platform. The top of the first support platform matches the shape of the bottom of the air pipe to limit the movement of the air pipe in the longitudinal direction. The bottom of the first lifting cylinder is hingedly connected to the carrying part. The top of the first lifting cylinder is hingedly connected to the first support platform.

[0018] Preferably, the first lifting support frame further comprises a first scissor support pivot shaft and a first connecting rod, both ends of the first scissor support pivot shaft are rotatably connected with a first pivot point of the first scissor support arm and a second pivot point of the second scissor support arm respectively, both ends of the first connecting rod are fixedly connected with the top of the same side of the first scissor support arm and the second scissor support arm respectively, and the output end of the first lifting oil cylinder is hingedly connected with the first connecting rod.

[0019] Preferably, the second lifting support frame comprises a second support platform, a third scissor support arm, a fourth scissor support arm and a second lifting oil cylinder, one end of the same side of the third scissor support arm and the fourth scissor support arm is hingedly connected with the carrying part, the other end of the same side of the third scissor support arm and the fourth scissor support arm is slidingly connected with the carrying part, the top of the third scissor support arm and the fourth scissor support arm is hingedly connected with the second support platform, the top of the second support platform is matched with the shape of the bottom of the air pipe to limit the movement of the air pipe in the longitudinal direction, and the middle part of the second support platform is provided with a containing cavity capable of placing the connecting flange of the air pipe, the bottom of the second lifting oil cylinder is hingedly connected with the carrying part, and the top of the second lifting oil cylinder is hingedly connected with the second support platform.

[0020] Preferably, the second lifting support frame further comprises a second scissor support pivot shaft and a second connecting rod, both ends of the second scissor support pivot shaft are rotatably connected with a third pivot point of the third scissor support arm and a fourth pivot point of the fourth scissor support arm respectively, both ends of the second connecting rod are fixedly connected with the top of the same side of the third scissor support arm and the fourth scissor support arm respectively, and the output end of the second lifting oil cylinder is hingedly connected with the second connecting rod.

[0021] Preferably, the bottom of the end of the first scissor support arm and the second scissor support arm away from the first lifting oil cylinder is provided with a first pulley, and the bottom of the end of the third scissor support arm and the fourth scissor support arm away from the second lifting oil cylinder is provided with a second pulley.

[0022] Preferably, the first limiting member comprises a first oil cylinder tailstock, a first tensioning oil cylinder, a first oil cylinder mounting support and a first hook, the fixed end of the first tensioning oil cylinder is fixedly connected with the vehicle head through the first oil cylinder tailstock, the bottom of the first oil cylinder mounting support is fixedly connected with the carrying part, and the top is used for being fixedly connected with the fixed end of the first tensioning oil cylinder, the first hook is used for being rotatably connected with the output end of the first tensioning oil cylinder and can be kept in a designed position, when the output end of the first tensioning oil cylinder drives the first hook to pass through the U-shaped hole of the inclined rib, the inclined rib can drive the first hook to rotate towards the vehicle head to make the first hook pass through the U-shaped hole of the inclined rib, and the first hook after passing through the U-shaped hole of the inclined rib can be reset and clamped with the inclined rib when the first tensioning oil cylinder is retracted.

[0023] Preferably, the first limiting member comprises a first oil cylinder tailstock, a first tensioning oil cylinder, a first oil cylinder mounting support and a first hook, the fixed end of the first tensioning oil cylinder is fixedly connected with the vehicle head through the first oil cylinder tailstock, the bottom of the first oil cylinder mounting support is fixedly connected with the carrying part, and the top is used for being fixedly connected with the fixed end of the first tensioning oil cylinder, the first hook is used for being rotatably connected with the output end of the first tensioning oil cylinder and can be kept in a designed position, when the output end of the first tensioning oil cylinder drives the first hook to pass through the U-shaped hole of the inclined rib, the inclined rib can drive the first hook to rotate towards the vehicle head to make the first hook pass through the U-shaped hole of the inclined rib, and the first hook after passing through the U-shaped hole of the inclined rib can be reset and clamped with the inclined rib when the first tensioning oil cylinder is retracted.

[0024] Preferably, the second limiting member is the same in structure as the first limiting member, and the position, at which the vehicle head is used to contact the air pipe, is provided with a buffer pad.

[0025] The utility model discloses relative to prior art has obtained following technical effect:

[0026] The utility model provides a kind of high furnace air pipe dismounting device, when needing to replace air pipe, operating carrying trolley reaches specified position, operating first lifting support and second lifting support and the bottom of the air pipe is supported while limiting the movement of air pipe in longitudinal direction, remove air pipe upper connecting bolt;Operating first limiting member and second limiting member respectively pass through the U-shaped hole of the inclined rib of the air pipe both sides and the air pipe is clamped to the vehicle head in turn and then the air pipe is positioned in transverse direction;Operation carrying trolley, air pipe is dragged and transferred to hoisting position, simple structure, convenient to use, effectively improve labor efficiency, effectively guarantee operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A front view structural schematic diagram of the blast furnace air duct disassembly and assembly device provided by this utility model;

[0029] Figure 2 A diagram showing the state of the first hook when the first tensioning cylinder passes through the U-shaped hole in the blast furnace duct disassembly and assembly device provided by this utility model.

[0030] Figure 3 A diagram showing the state of the first hook in the blast furnace duct disassembly and assembly device provided by this utility model when the first tensioning cylinder passes through the U-shaped hole and the first hook is in the tensioned state.

[0031] Figure 4 A schematic diagram showing the position of the first limiting block in the blast furnace duct disassembly and assembly device provided by this utility model;

[0032] Figure 5 for Figure 1 Sectional view at point AA;

[0033] Figure 6 for Figure 1 Side view from direction B;

[0034] In the diagram: 1. Air duct; 2. Buffer pad; 3. Car front; 4. First cylinder tailstock; 5. First tensioning cylinder; 6. First cylinder mounting bracket; 7. First hook; 8. First slewing shaft; 10. First limit block; 11. First support platform; 12. Second support platform; 13. Second pulley; 15. Third hinge shaft; 16. Third scissor support arm; 17. Second scissor support slewing shaft; 18. Second lifting cylinder; 19. Second connecting rod; 20. Transport unit; 21. Wheel; 22. Diagonal rib; 23. Limit screw. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] The utility model discloses a blast furnace air pipe dismounting device, to solve the problem of prior art, simple structure, convenient to use, effectively improve the labor efficiency, effectively guarantee the operation safety.

[0037] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further explained in detail below with the combination of drawings and specific embodiments.

[0038] Embodiment one

[0039] The embodiment provides a blast furnace air pipe 1 dismounting device, which comprises a carrying trolley, a first lifting support frame, a second lifting support frame, a first limiting piece and a second limiting piece, the carrying trolley can move and keep the position after moving, and the carrying trolley comprises a carrying part 20 and a trolley head 3; the first lifting support frame is arranged at the top of the carrying part 20, the first lifting support frame can be lifted or lowered to support the bottom of the air pipe 1 and can limit the longitudinal direction of the air pipe 1; the second lifting support frame is arranged at the top of the carrying part 20 and one side of the first lifting support frame, the second lifting support frame can be lifted or lowered to support the bottom of the air pipe 1 and can limit the longitudinal direction of the air pipe 1; one end of the first limiting piece is used for fixing the side of the trolley head 3 close to the carrying part 20, the first limiting piece can be lengthened or shortened to pass through the U-shaped hole of the inclined rib 22 on one side of the air pipe 1 and press the air pipe 1 against the trolley head 3, so that the air pipe 1 is limited in the transverse direction; the first limiting piece is arranged in parallel with the first limiting piece, and one end of the second limiting piece is used for fixing the trolley head 3, the second limiting piece can be lengthened or shortened to pass through the U-shaped hole of the inclined rib 22 on the other side of the air pipe 1 and press the air pipe 1 against the trolley head 3, so that the air pipe 1 is limited in the transverse direction.

[0040] In a preferred scheme of the embodiment, the first lifting support frame comprises a first support platform 11, a first scissor support arm, a second scissor support arm and a first lifting oil cylinder, one end of the first scissor support arm and the second scissor support arm on the same side is hingedly connected with the carrying part 20, the carrying part 20 is provided with a first hinged seat and a second hinged seat, the first scissor support arm is hingedly connected with the first hinged seat through a first hinged shaft, the second scissor support arm is hingedly connected with the second hinged seat through a second hinged shaft, the other end of the first scissor support arm and the second scissor support arm on the same side is slidingly connected with the carrying part 20, the top of the first scissor support arm and the second scissor support arm is hingedly connected with the first support platform 11, the top of the first support platform 11 is matched with the shape of the bottom of the air pipe 1 to limit the movement of the air pipe in the longitudinal direction, the bottom of the first lifting oil cylinder is hingedly connected with the carrying part 20, and the top of the first lifting oil cylinder is hingedly connected with the first support platform 11.

[0041] In one preferred scheme of the embodiment, the first lifting support frame further comprises a first scissor support rotary shaft 8 and a first connecting rod, both ends of the first scissor support rotary shaft 8 are rotationally connected with the first rotary shaft point of the first scissor support arm and the second rotary shaft point of the second scissor support arm respectively, both ends of the first connecting rod are fixedly connected with the top of the first scissor support arm and the second scissor support arm on the same side, and the output end of the first lifting oil cylinder is hingedly connected with the first connecting rod.

[0042] In one preferred scheme of the embodiment, the second lifting support frame comprises a second support platform 12, a third scissor support arm 16, a fourth scissor support arm, and a second lifting oil cylinder 18, one end of the third scissor support arm 16 and the fourth scissor support arm on the same side is hingedly connected with the carrying part 20, the carrying part 20 is provided with a third hinged seat and a fourth hinged seat, the third scissor support arm 16 is hingedly connected with the third hinged seat through a third hinged shaft 15, the fourth scissor support arm is hingedly connected with the fourth hinged seat through a fourth hinged shaft, the other end of the third scissor support arm 16 and the fourth scissor support arm on the same side is slidingly connected with the carrying part 20, the top of the third scissor support arm 16 and the fourth scissor support arm is hingedly connected with the second support platform 12, the top of the second support platform 12 is matched with the shape of the bottom of the wind pipe 1 to limit the movement of the wind pipe in the longitudinal direction, and the middle part of the second support platform 12 is provided with a containing cavity capable of placing the connecting flange of the wind pipe 1, the bottom of the second lifting oil cylinder 18 is hingedly connected with the carrying part 20, and the top of the second lifting oil cylinder 18 is hingedly connected with the second support platform 12.

[0043] In one preferred scheme of the embodiment, the second lifting support frame further comprises a second scissor support rotary shaft 17 and a second connecting rod 19, both ends of the second scissor support rotary shaft 17 are rotationally connected with the third rotary shaft point of the third scissor support arm 16 and the fourth rotary shaft point of the fourth scissor support arm respectively, both ends of the second connecting rod 19 are fixedly connected with the top of the third scissor support arm 16 and the fourth scissor support arm on the same side, and the output end of the second lifting oil cylinder 18 is hingedly connected with the second connecting rod 19.

[0044] In one preferred scheme of the embodiment, the bottom of the end of the first scissor support arm and the second scissor support arm away from the first lifting oil cylinder is provided with a first pulley, the bottom of the end of the third scissor support arm 16 and the fourth scissor support arm away from the second lifting oil cylinder 18 is provided with a second pulley 13,

[0045] In a preferred scheme of the embodiment, the first limiting member includes the first oil cylinder tail seat 4, the first tensioning oil cylinder 5, the first oil cylinder mounting bracket 6, and the first hook 7. The fixed end of the first tensioning oil cylinder 5 is fixedly connected with the vehicle head 3 through the first oil cylinder tail seat 4. The bottom of the first oil cylinder mounting bracket 6 is fixedly connected with the carrying part 20, and the top is used for fixedly connecting with the fixed end of the first tensioning oil cylinder 5. The first hook 7 is used for rotatably connecting with the output end of the first tensioning oil cylinder 5 and can be kept at a designed position. When the output end of the first tensioning oil cylinder 5 drives the first hook 7 to pass through the U-shaped hole of the inclined rib 22, the inclined rib 22 can drive the first hook 7 to rotate towards the vehicle head 3 to make the first hook 7 pass through the U-shaped hole of the inclined rib 22. The first hook 7 after passing through the U-shaped hole of the inclined rib 22 can be reset and clamped with the inclined rib 22 when the first tensioning oil cylinder 5 is retracted.

[0046] In a preferred scheme of the embodiment, the first limiting member includes the first oil cylinder tail seat 4, the first tensioning oil cylinder 5, the first oil cylinder mounting bracket 6, and the first hook 7. The fixed end of the first tensioning oil cylinder 5 is fixedly connected with the vehicle head 3 through the first oil cylinder tail seat 4. The bottom of the first oil cylinder mounting bracket 6 is fixedly connected with the carrying part 20, and the top is used for fixedly connecting with the fixed end of the first tensioning oil cylinder 5. The first hook 7 is used for rotatably connecting with the output end of the first tensioning oil cylinder 5 and can be kept at a designed position. When the output end of the first tensioning oil cylinder 5 drives the first hook 7 to pass through the U-shaped hole of the inclined rib 22, the inclined rib 22 can drive the first hook 7 to rotate towards the vehicle head 3 to make the first hook 7 pass through the U-shaped hole of the inclined rib 22. The first hook 7 after passing through the U-shaped hole of the inclined rib 22 can be reset and clamped with the inclined rib 22 when the first tensioning oil cylinder 5 is retracted.

[0047] In a preferred scheme of the embodiment, the second limiting member is the same as the first limiting member in structure. The position where the vehicle head 3 is used to contact the air pipe 1 is provided with the buffer pad 2. The same structure of the second limiting member and the first limiting member ensures the symmetrical limiting of the two sides of the air pipe 1 and improves the stability of the air pipe 1. The setting of the buffer pad 2 reduces the collision and wear between the air pipe 1 and the vehicle head 3, and protects the air pipe 1 and the vehicle head 3.

[0048] Embodiment two

[0049] The embodiment provides a use method of the blast furnace air pipe 1 dismounting device.

[0050] I. Preparation stage

[0051] When the air pipe 1 of the blast furnace is blocked and needs to be replaced, the carrying trolley is moved to the specified position. The carrying trolley is provided with a counterweight, a battery, a motor, a hydraulic system, a control system and the like. The wheels 21 at the bottom of the carrying trolley are steel wheels 21. The carrying part 20 is provided with other mechanism mounting hole positions, fixed hinge hole positions and scissor support sliding grooves. It is checked whether all the parts on the carrying trolley are normally operated, and it is ensured that the hydraulic system, the control system and the like are in good condition.

[0052] II. Air pipe 1 dismounting stage

[0053] The first and second lifting cylinders 18 are operated to lift, thereby driving the first and second lifting support frames to rise respectively.

[0054] For the first lifting support frame:

[0055] The first lifting cylinder pushes the first connecting rod, causing the first scissor support arm and the second scissor support arm to rotate around the hinge point with the carrier unit 20, while the other end of the first scissor support arm and the second scissor support arm on the same side slides on the carrier unit 20.

[0056] The tops of the first and second scissor support arms push the first support platform 11 upward. The top of the first support platform 11 fits into the corresponding part of the bottom of the air duct 1, stabilizing the air duct 1 and limiting the longitudinal direction of the air duct 1.

[0057] For the second lifting support frame:

[0058] The second lifting cylinder 18 pushes the second connecting rod 19, causing the third scissor support arm 16 and the fourth scissor support arm to rotate around the hinge point with the carrier unit 20, while the other end of the third scissor support arm 16 and the fourth scissor support arm on the same side slides on the carrier unit 20.

[0059] The second support platform 12 rises, and its top fits into the corresponding part of the bottom of the air duct 1, stabilizing and supporting the air duct 1 and limiting the longitudinal direction of the air duct 1. The accommodating cavity in the middle of the second support platform 12 is used to avoid flanges and installation bolts.

[0060] Remove the connecting bolts above air duct 1.

[0061] Adjust the positions of the first and second limiters.

[0062] For the first limiting component:

[0063] Adjust the position of the first limiting block 10 to... Figure 4 Position ① in the middle and fix it with the limit screw 23. Operate the tensioning cylinder 5. After observing that the hook 7 has completely passed through the U-shaped hole of the inclined rib 2222 of the air duct 1, the first tensioning cylinder 5 extends and drives the first hook 7 to move towards the air duct 1. When the first hook 7 contacts the U-shaped hole of the inclined rib 22 of the air duct 1, the first torsion spring is compressed under the action of the hole, forcing the first hook 7 to rotate counterclockwise and stick to the first tensioning cylinder 5 to ensure that it passes smoothly through the U-shaped hole.

[0064] After passing through the hole, under the action of the first torsion spring, the first hook 7 rotates clockwise to the limit position set by the first limit block 10.

[0065] The action of the second limiting member is the same as that of the first limiting member.

[0066] When the pressure reaches 0.5MPa, the oil circuit is switched to the pressure maintaining state, the carrying trolley is operated to pull out the air pipe 1 and is transferred to a position convenient for hoisting.

[0067] Without adjusting the height of the lifting device, after the first tensioning oil cylinder 5 is operated to extend, the limiting screw 23 is removed, the limiting block 10 is moved from position 1 to position 2 in the first limiting block 10, and then the limiting screw 23 is used to fix the position of the first limiting block 10, so that the first hook 7 can normally operate, and the first tensioning oil cylinder 5 is retracted to the left side of the inclined rib 22 of the air pipe 1. Figure 4

[0068] Similarly, the second limiting member is operated, and then the hoisting tool is used to remove the blocked air pipe 1.

[0069] III. Air pipe 1 installation stage

[0070] The new air pipe 1 is placed on the corresponding position of the carrying trolley.

[0071] The first tensioning oil cylinder 5 and the second tensioning oil cylinder are repeatedly operated, so that the first hook 7 and the second hook pass through the U-shaped hole position of the inclined rib 22 of the new air pipe 1 and are rotated to the limiting block setting position under the action of the torsional spring, so that the tensioning effect is realized.

[0072] The first tensioning oil cylinder 5 and the second tensioning oil cylinder extend, and drive the first hook 7 and the second hook to move towards the air pipe 1. Under the action of the hole position, the hook rotates through the hole position, and then rotates to the limiting position under the action of the torsional spring.

[0073] After the carrying trolley is operated to reach the specified position, the air pipe 1 is inserted into the corresponding air port.

[0074] The first lifting oil cylinder and the second lifting oil cylinder 18 are adjusted, the height position of the lifting device is adjusted, and the connecting bolt is installed.

[0075] The first tensioning oil cylinder 5 and the second tensioning oil cylinder are retracted, and the first supporting platform 11 and the second supporting platform 12 are lowered.

[0076] The carrying trolley is operated to drive away.

[0077] During the whole use process, the air pipe 1 does not need to be repeatedly adjusted in height position, and the air port is exposed by remote operation, so that the safety and efficiency are improved.

[0078] In the utility model, specific examples are applied to illustrate the principle and implementation mode of the utility model; the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, according to the idea of the utility model, the specific implementation mode and application range can be changed by the general technical personnel in the field. In conclusion, the content of the specification should not be understood as the limitation of the utility model.​

Claims

1. A blast furnace tuyere dismounting device, characterized by: The utility model relates to a wind pipe carrying device, which comprises the following parts: a carrying trolley capable of moving and keeping the position after moving, the carrying trolley comprising a carrying part and a trolley head; a first lifting support frame arranged on the top of the carrying part, the first lifting support frame being capable of ascending or descending to support the bottom of the wind pipe and limit the longitudinal direction of the wind pipe; a second lifting support frame arranged on the top of the carrying part and on one side of the first lifting support frame, the second lifting support frame being capable of ascending or descending to support the bottom of the wind pipe and limit the longitudinal direction of the wind pipe; a first limiting piece, one end of the first limiting piece being fixed on the side of the trolley head close to the carrying part, the first limiting piece being capable of elongating or shortening to pass through the U-shaped hole of the inclined rib on one side of the wind pipe and press the wind pipe against the trolley head to limit the wind pipe in the transverse direction; and a second limiting piece arranged in parallel with the first limiting piece, one end of the second limiting piece being fixed on the trolley head, the second limiting piece being capable of elongating or shortening to pass through the U-shaped hole of the inclined rib on the other side of the wind pipe and press the wind pipe against the trolley head to limit the wind pipe in the transverse direction. The first lifting support frame comprises a first support platform, a first scissor support arm, a second scissor support arm and a first lifting cylinder, one end of each of the first scissor support arm and the second scissor support arm on the same side is hingedly connected to the carrying part, the other end of each of the first scissor support arm and the second scissor support arm on the same side is slidingly connected to the carrying part, the top of each of the first scissor support arm and the second scissor support arm is hingedly connected to the first support platform, the top of the first support platform is matched with the shape of the bottom of the wind pipe to limit the movement of the wind pipe in the longitudinal direction, the bottom of the first lifting cylinder is hingedly connected to the carrying part, and the top of the first lifting cylinder is hingedly connected to the first support platform.

2. The apparatus according to claim 1, wherein: The first lifting support frame further comprises a first scissor support rotary shaft and a first connecting rod, both ends of the first scissor support rotary shaft are respectively rotatably connected to a first rotary shaft point of the first scissor support arm and a second rotary shaft point of the second scissor support arm, both ends of the first connecting rod are respectively fixedly connected to the top on the same side of the first scissor support arm and the second scissor support arm, and the output end of the first lifting cylinder is hingedly connected to the first connecting rod.

3. The apparatus of claim 2, wherein: ​ 4. The apparatus of claim 3, wherein: The second lifting support frame comprises a second support platform, a third scissor support arm, a fourth scissor support arm and a second lifting oil cylinder, one end of the third scissor support arm and the fourth scissor support arm on the same side is hingedly connected with the carrying part, the other end of the third scissor support arm and the fourth scissor support arm on the same side is slidably connected with the carrying part, the top of the third scissor support arm and the fourth scissor support arm is hingedly connected with the second support platform, the top of the second support platform is matched with the shape of the bottom of the air pipe to limit the movement of the air pipe in the longitudinal direction, and the middle of the second support platform is provided with a receiving cavity capable of placing the connecting flange of the air pipe, the bottom of the second lifting oil cylinder is hingedly connected with the carrying part, and the top of the second lifting oil cylinder is hingedly connected with the second support platform.

5. The apparatus of claim 4, wherein: The second lifting support frame further comprises a second scissor support rotary shaft and a second connecting rod, both ends of the second scissor support rotary shaft are respectively rotationally connected with a third rotary shaft point of the third scissor support arm and a fourth rotary shaft point of the fourth scissor support arm, and both ends of the second connecting rod are respectively fixedly connected with the top of the third scissor support arm and the fourth scissor support arm on the same side, and the output end of the second lifting oil cylinder is hingedly connected with the second connecting rod.

6. The apparatus of claim 5, wherein: The bottom of the end of the first scissor support arm and the second scissor support arm away from the first lifting oil cylinder is provided with a first pulley, and the bottom of the end of the third scissor support arm and the fourth scissor support arm away from the second lifting oil cylinder is provided with a second pulley.

7. The apparatus of claim 1, wherein: The first limiting piece comprises a first oil cylinder tailstock, a first tensioning oil cylinder, a first oil cylinder mounting bracket and a first hook, the fixed end of the first tensioning oil cylinder is fixedly connected with the vehicle head through the first oil cylinder tailstock, the bottom of the first oil cylinder mounting bracket is fixedly connected with the carrying part, and the top is used for fixedly connecting with the fixed end of the first tensioning oil cylinder, the first hook is rotationally connected with the output end of the first tensioning oil cylinder and can be kept in a designed position, when the output end of the first tensioning oil cylinder drives the first hook to pass through the U-shaped hole of the inclined rib, the inclined rib can drive the first hook to rotate towards the vehicle head to make the first hook pass through the U-shaped hole of the inclined rib, and the first hook after passing through the U-shaped hole of the inclined rib can be reset and clamped with the inclined rib when the first tensioning oil cylinder is retracted.

8. The apparatus of claim 7, wherein: Further comprising a first rotary shaft, a first torsional spring and a first limiting block, the output end of the first tensioning oil cylinder is provided with a first groove, the first rotary shaft is fixedly connected in the first groove, the first hook is rotationally connected with the first rotary shaft, one end of the first torsional spring is used for fixedly connecting with the first rotary shaft, the other end is used for fixedly connecting with the first hook, and the first limiting block is detachably fixedly connected on the side of the first rotary shaft away from the fixed end of the first tensioning oil cylinder to limit the rotary position of the first hook, and the first torsional spring is used for driving the first hook to rotate and abutting against the first limiting block.

9. The apparatus of claim 7, wherein: The second limiting piece is the same in structure as the first limiting piece, and a buffer pad is arranged at a position where the vehicle head is used to contact the air pipe.

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