Hoisting device and method

Abstract

The invention provides a hoisting device and a hoisting method, the hoisting device is used for hoisting a flue, and the hoisting device comprises a hoisting seat which is located in the flue and is provided with an inwards concave mounting groove, and the top of the hoisting seat is provided with a hoisting ring for hoisting; the winding wheel is rotationally arranged in the mounting groove, and the winding wheel is provided with a partition plate so that the winding wheel can be divided into two storage positions; one ends of the two connecting ropes are respectively wound on the two storage positions; the adjusting and locking unit is arranged on one side of the hoisting seat and is connected with the winding wheel; and the hoisting unit comprises an I-shaped sliding rail arranged in the axis direction of the flue and a hoisting piece arranged on the I-shaped sliding rail, and the hoisting piece is connected with the hoisting base. The lengths of the connecting cables on the two sides of the hoisting seat are independently controlled by adjusting the locking unit, when the gravity center of the flue is close to the left, the length of the connecting cable on the left side is shortened, correspondingly, the connecting cable on the other side is automatically lengthened, the hoisting seat serving as a flue hoisting point is close to the gravity center position of the flue, and gravity center deviation caused by different flue sections and types can be compensated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hoisting devices, in particular to a hoisting device and method in a narrow space. BACKGROUND

[0002] Sintering operation is to mix and granulate iron ore, various fluxes and fine coke, then add them into the sintering machine through the distribution system, ignite the fine coke through the ignition furnace, complete the sintering reaction through the air blower, and send the high-heat sintered ore to the blast furnace after crushing, cooling and screening as the main raw material for smelting molten iron. Sintering process is a relatively mature, large-scale and high-efficiency process, and the dust removal pipe system (commonly known as the large flue) is an important part of the sintering machine.

[0003] Since the large flue is installed in the structural floor of the sintering chamber, it is difficult to be hoisted in place by using hoisting machinery, therefore, the auxiliary tool for hoisting the large flue in a limited space is disclosed in Chinese patent "CN217398221U", which sets up a construction platform to transport the large flue, greatly shortens the construction time, improves the installation efficiency of the large flue, and the hoisting auxiliary tools are detachably connected, so that each part can be recycled after the installation of the large flue is completed, which can be used repeatedly, saves the construction cost, is more environmentally friendly, reduces the labor input, and reduces the labor intensity. However, when hoisting different segments or different types of flues, the flue will tilt due to the unbalanced moment because of the different positions of the center of gravity, and the unequal weight on both sides of the hoisting point will easily lead to rotation, causing the components to lose control and swing in the air, which makes it more difficult to splice between the flues, and reduces the work efficiency. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides a hoisting device and method, which solves the problem that the hoisting mechanism in the prior art cannot stably hoist flues with different centers of gravity.

[0005] According to an embodiment of the present application, a hoisting device for hoisting a flue comprises:

[0006] A hoisting seat is located inside the flue and has an inwardly recessed mounting groove, and a hoisting ring is arranged at the top for hoisting;

[0007] A winding wheel is rotatably arranged in the mounting groove, and the winding wheel is provided with a partition plate to divide the winding wheel into two storage positions;

[0008] Two connecting ropes are wound around the two storage positions at one end, and two connecting lifting rings are mirror-imaged distributed on the inner side of the flue, and the other end of the two connecting ropes is connected with the corresponding connecting lifting ring;

[0009] The adjusting and locking unit is arranged on one side of the lifting seat and connected with the winding wheel, and is used for driving the winding wheel to rotate to adjust the extension length of the connecting ropes.

[0010] The lifting unit comprises an I-shaped sliding rail arranged along the axis direction of the flue and a lifting piece arranged on the I-shaped sliding rail, and the lifting piece is connected with the lifting seat and used for lifting and moving the flue.

[0011] Compared with the prior art, the present application has the following beneficial effects:

[0012] In the present application, the lifting seat is used as the lifting point of the flue, the winding wheel is installed in the lifting seat, the winding wheel is adjusted and locked by the adjusting and locking unit, and the two connecting ropes wound in the winding wheel are respectively moved out of the winding wheel and accommodated in the winding wheel, the lengths of the connecting ropes on both sides of the lifting seat are independently controlled, when the gravity center of the flue is on the left side, the length of the connecting rope on the left side is shortened, correspondingly, the length of the connecting rope on the other side is automatically lengthened, the lifting seat as the lifting point of the flue is close to the gravity center position of the flue, the gravity center deviation caused by different flue segments and types can be compensated, the risk of rotation out of control caused by the unequal weight on both sides of the lifting point is effectively eliminated, and the horizontal posture of the flue is ensured; meanwhile, the I-shaped sliding rail is arranged along the paving direction of the flue, the lifting unit and the lifting ring are matched to realize the integrated operation of lifting, translation and butt joint of the flue, the platform is not needed to be carried or other large lifting equipment is not needed to be used, and the lifting and splicing of the flue and other circular members in a narrow space are met.

[0013] Preferably, the adjusting and locking unit comprises:

[0014] The worm is rotatably arranged between the two mounting blocks corresponding to the lifting seat;

[0015] The worm gear is rotatably arranged on the side surface of the lifting seat and connected with the rotating shaft of the winding wheel, and the worm is engaged with the worm gear.

[0016] Preferably, the adjusting and locking unit further comprises:

[0017] The limit gear is rotatably arranged on the other side of the lifting seat and connected with the rotating shaft of the winding wheel;

[0018] The connecting plate is located on the top of the lifting seat and fixedly connected with the lifting ring, the side surface of the connecting plate is provided with a mounting bracket, the mounting bracket is slidably arranged on the lifting seat, and the end of the mounting bracket away from the connecting plate is provided with a limit tooth.

[0019] Preferably, the limit tooth is slidably arranged on the mounting bracket, the mounting bracket is provided with an adjusting screw, and the limit tooth is threadedly connected with the adjusting screw.

[0020] Preferably, a plurality of mounting rods are provided on the top of the hanging seat, the connecting plate is sleeved on the plurality of mounting rods, and a limit block is provided at the end of each mounting rod.

[0021] Preferably, the hanging parts include:

[0022] Crane, sliding on I-shaped slide rail;

[0023] The sling is installed on the crane and connected to the lifting base.

[0024] Preferably, a lifting hook is provided at the end of the sling, and the lifting hook is hung on the lifting ring.

[0025] Preferably, a connecting hook is provided at the end of the connecting rope, and the connecting hook is hung on the connecting ring.

[0026] Preferably, limiting wheels are rotatably provided on both sides of the installation groove, and the connecting rope is overlapped on the limiting wheels.

[0027] On the other hand, according to an embodiment of the present invention, a hoisting method includes a hoisting device and further includes the following steps:

[0028] S1: Flue processing, symmetrically install two connecting rings on the inner wall of the flue;

[0029] S2: Confirm the hanging point, use Tekla software to carry out modeling work, and use the COG command to find the exact position of the center of gravity of the flue;

[0030] S3: Track paving: Arrange the I-shaped slide rail horizontally along the axis of the narrow space, install the lifting parts on the I-shaped slide rail, and ensure that the lifting parts can slide smoothly on the I-shaped slide rail;

[0031] S4: Adjust the length of the connecting ropes. Connect the two connecting ropes to the two connecting rings respectively. Adjust the reel by adjusting the locking unit to make the lengths of the two connecting ropes longer or shorter respectively, until the two connecting ropes are in a straight state and the lifting base is in the gravity area.

[0032] S5: Flue hoisting: connect the hoisting seat to the hoisting parts, control the hoisting parts to lift the flue vertically to the specified height, and then control the hoisting parts to move on the I-shaped slide rail to move the flue horizontally to the installation position.

[0033] S6: Flue duct splicing, release the connection between the connecting rope and the connecting ring, control the lifting parts to move to the initial lifting position on the I-shaped slide rail, repeat S1-S5, complete the lifting of all flues, and splice them one by one.

[0034] Compared with the existing technology, this method has the following beneficial effects:

[0035] In this method, the center of gravity of the flue is accurately identified through modeling, and the length of the connecting rope is adjusted in conjunction with the locking unit to ensure balanced force on the lifting point, thereby preventing the flue from tilting or rotating due to center of gravity shift during the lifting process, and significantly improving the lifting stability. At the same time, under the action of the lifting unit, horizontal transfer is achieved in a narrow space, allowing the lifting parts to be reused and the process to be executed in a cycle, greatly shortening the construction period and accelerating the overall splicing progress. It is widely applicable to the lifting and hoisting operations of circular components, solving the problems of easy imbalance, low efficiency, and poor safety in traditional lifting methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of a lifting device in an embodiment of the present invention applied to a narrow space on a floor.

[0037] Figure 2 It is a schematic diagram of the three-dimensional structure of the hoisting device for hoisting the flue in an embodiment of the present invention.

[0038] Figure 3 It is a schematic plan view of the structure of the hoisting device for hoisting the flue in an embodiment of the present invention.

[0039] Figure 4 for Figure 3 Schematic diagram of the structure with the center of gravity shifted to the left.

[0040] Figure 5 for Figure 3 Schematic diagram of the structure with the center of gravity shifted to the right.

[0041] Figure 6 It is a structural schematic diagram of the hoisting device for hoisting the ash hopper in an embodiment of the present invention.

[0042] Figure 7 Schematic diagram of the assembly structure of two connecting cables and a winding wheel in an embodiment of the present invention.

[0043] Figure 8 Schematic diagram of a portion of the structure of the adjustment locking unit in an embodiment of the present invention.

[0044] Figure 9 FIG. 2 is a schematic diagram of another part of the structure of the adjustment locking unit in an embodiment of the present invention.

[0045] Figure 10 for Figure 8 Schematic diagram of the side structure.

[0046] Figure 11 This is a schematic diagram of the assembly structure of the winding wheel, worm gear and limit gear in an embodiment of the present invention.

[0047] Figure 12 Schematic diagram of the structure in which the limiting gear and the limiting teeth are misaligned in an embodiment of the present invention.

[0048] Figure 13 Figure 1 is a schematic view of the structure of the limiting gear and the limiting teeth for positioning in the embodiment of the present application.

[0049] In the above figure: 1, flue; 101, connecting lifting ring; 2, I-shaped sliding rail; 201, crane; 202, sling; 203, lifting hook; 3, lifting seat; 301, lifting ring; 302, mounting block; 303, mounting rod; 304, limiting block; 305, mounting groove; 4, winding wheel; 401, partition; 402, storage site; 5, worm gear; 501, worm; 6, limiting gear; 601, limiting tooth; 602, adjusting screw; 7, connecting plate; 701, mounting frame; 8, connecting cable; 801, connecting hook; 9, limiting wheel. DETAILED DESCRIPTION

[0050] The technical solutions in the present application will be further described below in combination with the drawings and embodiments.

[0051] The present scheme can be widely used for the lifting and hoisting of various circular components in narrow areas, such as construction pipelines, flues 1, and pipeline transportation for container cargo wharfs. For example, as shown in Figure 2 The flue 1 has an opening upwardly for connecting an air guide pipe and an opening downwardly for connecting an ash bucket. In order to facilitate direct lifting from the ground, the present scheme adopts built-in lifting points in the flue 1 for lifting. However, as shown in Figure 1 Due to the influence of the construction environment, the flue 1 is installed in the structural floor of the sintering chamber, and the minimum net space of the floor is 5.9m. Large lifting machinery is difficult to be in place, and the auxiliary tool for lifting large flues in limited space disclosed in CN217398221U cannot adapt to the center of gravity during lifting of the flue 1, resulting in instability during lifting.

[0052] Therefore, the present embodiment proposes a lifting device for lifting the flue 1, which comprises:

[0053] The lifting seat 3 is located inside the flue 1 and is provided with an inwardly recessed mounting groove 305, and the top is provided with a lifting ring 301 for lifting;

[0054] The winding wheel 4 is rotatably arranged in the mounting groove 305, and the winding wheel 4 is provided with a partition 401 to separate the winding wheel 4 into two storage sites 402;

[0055] Two connecting cables 8, one end of each of the two connecting cables 8 is wound around the two storage sites 402, and the inner side of the flue 1 is mirror-imaged with two connecting lifting rings 101, and the other end of each of the two connecting cables 8 is connected with the corresponding connecting lifting ring 101;

[0056] The adjusting and locking unit is arranged on one side of the lifting seat 3 and connected with the winding wheel 4, and is used to drive the winding wheel 4 to rotate, so as to adjust the extension length of the connecting ropes 8.

[0057] The lifting unit comprises an I-shaped sliding rail 2 arranged along the axis direction of the flue 1 and a lifting piece arranged on the I-shaped sliding rail 2, and the lifting piece is connected with the lifting seat 3 and used to lift and move the flue 1.

[0058] In the embodiment of the present application, as shown in the drawings, Figure 2 two mirror image connecting lifting rings 101 are arranged on the inner side of the flue 1, and the lifting seat 3 is extended into the flue 1 from the upper opening of the flue 1, and the connection is prepared, and in the lifting of the flue 1 of the same size, the flue 1 can be modeled and analyzed separately, and after the gravity center area is determined, the lifting lifting ring 301 of the lifting seat 3 is installed on the lifting piece of the lifting unit, which is used to bear the gravity of the lifting seat 3, wherein the lifting piece can be a lifting equipment with lifting and moving functions, and then the two connecting ropes 8 of the lifting seat 3 are connected with the corresponding two connecting lifting rings 101, Figure 3 , Figure 4 and Figure 5 for example, Figure 3 the initial length of the two connecting ropes 8 is L, the length of the left connecting rope 8 is L1, and the length of the right connecting rope 8 is L2, in the initial state, L1=L2, when the gravity center of the flue 1 is detected to be in the center, the length of the two connecting ropes 8 does not need to be adjusted, and the lifting seat 3 can be directly lifted by the lifting piece, as shown in the drawings, Figure 4 and Figure 5 as a reference, if the gravity center of the flue 1 is detected to be on the left, the winding wheel 4 is adjusted and locked in advance by the adjusting and locking unit according to the gravity center detection result, and the assembly mode of the two connecting ropes 8 and the winding wheel 4 is as shown in the drawings, Figure 7 and Figure 8 the winding wheel 4 has two receiving positions 402, the left connecting rope 8 is wound counterclockwise, and the right connecting rope 8 is wound clockwise, when the winding wheel 4 is counterclockwise rotated by the adjusting and locking unit, the left connecting rope 8 can be extended, and the right connecting rope 8 can be wound into the winding wheel 4 at the same time, at this time, L1>L2, and in the lifting, the lifting seat 3 as the flue lifting point is moved to the right side of the dashed line; when the winding wheel 4 is clockwise rotated by the adjusting and locking unit, the left connecting rope 8 can be wound into the winding wheel 4, and the right connecting rope 8 can be extended at the same time, at this time, L1 is less than L2, and the lifting seat 3 as the flue lifting point is moved to the left side of the dashed line.

[0059] When the sizes of L1 and L2 change, the position of the lifting piece will also change because the lifting seat 3 is subjected to the vertical upward force of the lifting piece, and specifically, the lifting piece comprises:

[0060] The crane 201 is slidably arranged on the I-shaped sliding rail 2.

[0061] The sling 202 is arranged on the crane 201 and connected with the hoisting seat 3. The sling 202 is directly connected with the hoisting seat 3 to realize the fixed connection with the hoisting seat 3. The crane 201 has a driving wheel that can move by itself. The driving wheel is slidably arranged on the I-shaped sliding rail 2 and can drive the crane 201 to move on the I-shaped sliding rail 2 to realize the conveying and splicing of the flue 1. Specifically, during the installation of the I-shaped sliding rail 2, the I-shaped sliding rail 2 can be installed at a floor position vertically corresponding to the hoisting seat 3 according to the position adjustment of the hoisting seat 3. If there are flues 1 with different centers of gravity during the assembly of the same flue 1, the I-shaped sliding rail 2 can be installed in a sliding manner. The I-shaped sliding rail 2 can be directly slid to a specified position. In order to ensure portability, i.e., to facilitate replacement at any time, the hoisting member further comprises a jack. The jack is installed on the top of the floor and is used to connect with the I-shaped sliding rail 2. The I-shaped sliding rail 2 is slidably connected to the top of the floor. When the position of the hoisting seat 3 changes, the jack is started to move the position of the I-shaped sliding rail 2 horizontally so that the sling 202 always remains in a horizontal position.

[0062] By changing the lengths of the two connecting ropes 8, the deviation of the center of gravity caused by different flue 1 segments and types can be compensated, the risk of rotation out of control caused by the unequal weight on both sides of the lifting point can be effectively eliminated, the flue 1 can always maintain a horizontal posture, the entire lifting point system can always be in a state of mechanical balance, and the controllability of the lifting process can be effectively improved. At the same time, the I-shaped sliding rail 2 is arranged along the paving direction of the flue 1. The flue is subjected to integrated lifting-translation-docking operation through the cooperation of the lifting unit and the lifting ring, without the need for a platform or the use of other large lifting equipment, thereby meeting the lifting and splicing of circular members such as flues in narrow spaces. At the same time, by using the lifting device, various circular members with different centers of gravity can be lifted, and part of the rectangular members with different centers of gravity can also be lifted, such as a container. The lifting ring 301 can be installed on the inside of the container. For example, as shown in Figure 6 , the inside of the ash bucket is also provided with the lifting ring 301. The ash bucket can be lifted by the crane 201 and installed at the bottom opening of the flue 1. The lifting device has high versatility and is convenient for work in narrow areas without the need for other large lifting equipment or the need to customize other lifting devices.

[0063] Based on the above scheme, as shown in Figure 8 , the adjusting and locking unit comprises:

[0064] The worm 501 is rotatably arranged between the two mounting blocks 302 corresponding to the hoisting seat 3.

[0065] The worm wheel 5 is rotatably arranged on the side of the hoisting seat 3 and connected with the rotating shaft of the winding wheel 4, and the worm 501 is engaged with the worm wheel 5.

[0066] Through the adjusting mode of the worm wheel 5 and the worm 501, the worm 501 can drive the worm wheel 5 to rotate by rotating the worm 501, so that the worm wheel 5 drives the winding wheel 4 to rotate. When the two connecting ropes 8 are adjusted to the specified length, the adjustment of the worm 501 is directly stopped, and the worm 501 can be self-locked under the action of the worm 501. No additional mechanical locking device is needed, which significantly improves the safety and stability of the hoisting process. The end of the worm 501 can be manually adjusted, or an interface can be reserved to connect an electric or hydraulic drive system to realize semi-automatic or automatic adjustment function.

[0067] Meanwhile, as shown in Figure 9 , the adjusting and locking unit further comprises:

[0068] The limiting gear 6 is rotatably arranged on the other side of the hoisting seat 3 and connected with the rotating shaft of the winding wheel 4;

[0069] The connecting plate 7 is located on the top of the hoisting seat 3 and fixedly connected with the hoisting ring 301. The side of the connecting plate 7 is provided with a mounting bracket 701 which is slidingly arranged on the hoisting seat 3, and the end of the mounting bracket 701 away from the connecting plate 7 is provided with a limiting tooth 601. When the mounting bracket 701 slides along the height direction of the hoisting seat 3, the limiting tooth 601 is engaged with or separated from the limiting gear 6.

[0070] When the two connecting ropes 8 are hoisted, the connecting ropes 8 will gradually straighten and act on the hoisting. When the connecting ropes 8 are straightened, the worm 501 will bear the entire force of the winding wheel 4 to the worm wheel 5. Therefore, under the cooperation of the limiting gear 6 and the limiting tooth 601, and under the premise that the original worm wheel 5 and worm 501 have self-locking function, a mechanical limiting locking structure is formed to provide a second safety guarantee. When the hoisting ring 301 is subjected to the hoisting force, the connecting plate 7 will slide on the hoisting seat 3, so that the limiting tooth 601 on the mounting bracket 701 is directly engaged on the limiting gear 6. During the continuous hoisting process, the limiting tooth 601 is always engaged with the limiting gear 6. In extreme conditions (such as vibration), when the winding wheel 4 is subjected to the tension of the two connecting ropes 8, the limiting tooth 601 and the limiting gear 6 can share part of the pressure of the worm 501, thereby improving the safety level. When the hoisting ring 301 gradually loses the hoisting force, the connecting plate 7 can be lowered under the action of gravity, so that the limiting tooth 601 and the limiting gear 6 are separated, facilitating subsequent adjustment of the two connecting ropes 8.

[0071] Specifically, since the adjusting mode of the worm wheel 5 and the worm 501 belongs to stepless adjustment, as shown in Figure 12As shown, if the teeth of the limiting gear 6 and the tooth groove of the limiting tooth 601 are not fully meshed, the teeth of the limiting gear 6 will squeeze the inclined surface of the tooth groove of the limiting tooth 601. Under the premise that the mounting frame 701 continues to apply force, the winding wheel 4 will be subjected to a rotational force of an angle. Therefore, in order to further reduce the pressure of the worm 501, the limiting tooth 601 is slidably arranged on the mounting frame 701, and the mounting frame 701 is penetrated by an adjusting screw 602. The limiting tooth 601 is threadedly connected to the adjusting screw 602. When the teeth of the limiting gear 6 and the tooth groove of the limiting tooth 601 are not fully meshed, the teeth of the limiting gear 6 will squeeze the inclined surface of the tooth groove of the limiting tooth 601. Under the premise that the mounting frame 701 continues to apply force, the winding wheel 4 will be subjected to a rotational force of an angle. Therefore, in order to further reduce the pressure of the worm 501, the limiting tooth 601 is slidably arranged on the mounting frame 701. The mounting frame 701 is penetrated by an adjusting screw 602. The limiting tooth 601 is threadedly connected to the adjusting screw 602. Figure 12 In the situation shown, the adjusting screw 602 is rotated to drive the limiting tooth 601 to move back and forth on the mounting bracket 701 through thread transmission, so as to control the engagement depth or separation distance between the limiting tooth 601 and the limiting gear 6, thereby forming a more stable mechanical lock.

[0072] At the same time, a plurality of mounting rods 303 are provided on the top of the lifting seat 3, and the connecting plate 7 is sleeved on the plurality of mounting rods 303, and a limit block 304 is provided at the end of each mounting rod 303. The number of mounting rods 303 is preferably four groups, which are respectively installed at the four corners of the top of the lifting seat 3. The mounting rods 303 play a supporting and guiding role. At the same time, under the action of the limit block 304, the sliding distance of the connecting plate 7 is limited to ensure that the limit tooth 601 is just engaged with the limit gear 6, avoid excessive engagement of the limit tooth 601 with the limit gear 6, and provide a sliding path and installation reference for the connecting plate 7.

[0073] Specifically, such as Figure 2 and Figure 3 As shown, the end of the sling 202 is provided with a lifting hook 203, which is attached to a lifting ring 301. The end of the connecting cable 8 is provided with a connecting hook 801, which is attached to a connecting ring 101. With the help of the lifting hook 203, after the flue 1 is installed, it can be quickly separated from the lifting ring 301, making it easy to switch between lifting tasks between different flues 1. The connecting hook 801 also facilitates on-site installation and removal of the flue 1.

[0074] Specifically, such as Figure 10 As shown, limiting wheels 9 are rotatably provided on both sides of the installation groove 305, and the connecting rope 8 is overlapped on the limiting wheels 9. The limiting wheels 9 are installed on both sides of the installation groove 305 (on both sides of the hoisting seat 3), that is, on both sides of the winding wheel 4. Firstly, it can ensure that when the connecting rope 8 is released or retracted from the winding wheel 4, it will pass through the limiting wheels 9 for steering or guiding, and can slide smoothly on the limiting wheels 9 to ensure smoothness and stability during operation; secondly, since the two storage positions 402 are in different planes, but the two limiting wheels 9 are in the same plane, it ensures that the connection points of the two connecting ropes 8 and the flue 1 are on the same plane, thereby ensuring the stability of the flue 1 hoisting.

[0075] The embodiment of the present application also provides a hoisting method, comprising a hoisting device, and further comprising the following steps:

[0076] S1: flue 1 processing, symmetrically installing two connecting lifting rings 101 on the inner wall of the flue 1;

[0077] S2: lifting point confirmation, using the tekla software to perform modeling work, and finding the accurate position of the gravity center of the flue 1 through the COG command;

[0078] S3: track paving, horizontally arranging the I-shaped sliding rail 2 along the axis direction of the narrow space, installing the hoisting piece on the I-shaped sliding rail 2, and the hoisting piece can smoothly slide on the I-shaped sliding rail 2;

[0079] S4: length adjustment of the connecting cable 8, connecting the two connecting cables 8 to the two connecting lifting rings 101 respectively, rotating and adjusting the winding wheel 4 through the adjusting lock unit, so that the lengths of the two connecting cables 8 are respectively lengthened and shortened, until the hoisting seat 3 is in the gravity area in the state that the two connecting cables 8 are taut;

[0080] S5: flue 1 hoisting, connecting the hoisting seat 3 to the hoisting piece, controlling the hoisting piece to vertically lift the flue 1 to a specified height, then controlling the hoisting piece to move on the I-shaped sliding rail 2, and horizontally transferring the flue 1 to the installation position.

[0081] S6: flue 1 splicing, disconnecting the connecting cable 8 from the connecting lifting ring 101, controlling the hoisting piece to move on the I-shaped sliding rail 2 to the initial hoisting position, repeating S1-S5, completing the hoisting of all flues 1, and splicing one by one.

[0082] In the method, the accurate identification of the gravity center of the flue is realized through modeling, and the length of the connecting cable is adjusted through the adjusting lock unit, so that the force balance of the lifting point is ensured, the inclination or rotation of the flue due to the gravity center deviation in the hoisting process is avoided, the hoisting stability is significantly improved, and under the action of the hoisting unit, the horizontal transfer in the narrow space is realized, the hoisting piece is repeatedly used, the process circulation is performed, the construction period is greatly shortened, the overall splicing progress is accelerated, and the hoisting operation of the circular member is widely applicable, and the problems of easy imbalance, low efficiency and poor safety in the traditional hoisting method are solved.

[0083] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. A hoisting device for hoisting a flue (1), characterized in that: include: A hanging seat (3) is located inside the flue (1) and is provided with an inwardly recessed mounting groove (305), and a lifting ring (301) for hanging is provided on the top; A reel (4) is rotatably mounted in the mounting groove (305), and the reel (4) is provided with a partition (401) to separate the reel (4) into two storage positions (402); Two connecting ropes (8), one end of each of the connecting ropes (8) is respectively wound around the two storage positions (402), two connecting rings (101) are mirror-imaged on the inner side of the flue (1), and the other ends of each of the connecting ropes (8) are respectively connected to the corresponding connecting rings (101); An adjustment locking unit is provided on one side of the hoisting seat (3) and is connected to the reel (4), and is used to drive the reel (4) to rotate so as to adjust the extension length of the connecting rope (8); And a hoisting unit, comprising an I-shaped slide rail (2) arranged along the axial direction of the flue (1) and a hoisting member provided on the I-shaped slide rail (2), wherein the hoisting member is connected to the hoisting seat (3) and is used for hoisting and moving the flue (1).

2. A lifting device according to claim 1, characterized in that: The adjustment locking unit includes: A worm (501), the hanging seat (3) is provided with two mounting blocks (302) correspondingly, and the worm (501) is rotatably arranged between the two mounting blocks (302); A worm wheel (5) is rotatably arranged on the side of the hanging seat (3) and connected to the rotating shaft of the winding wheel (4); the worm (501) is engaged with the worm wheel (5).

3. A hoisting device according to claim 2, characterized in that: The adjustment locking unit further includes: A limiting gear (6) is rotatably arranged on the other side of the hanging seat (3) and is connected to the rotating shaft of the winding wheel (4); A connecting plate (7) is located at the top of the hanging seat (3) and is fixedly connected to the lifting ring (301). A mounting frame (701) is provided on the side of the connecting plate (7). The mounting frame (701) is slidably arranged on the hanging seat (3), and a limiting tooth (601) is provided at one end of the mounting frame (701) away from the connecting plate (7). When the mounting frame (701) slides along the height direction of the hanging seat (3), it drives the limiting tooth (601) to engage with the limiting gear (6) or separate from it.

4. A hoisting device according to claim 3, characterized in that: The position-limiting teeth (601) are slidably arranged on the mounting frame (701); an adjusting screw (602) is passed through the mounting frame (701); and the position-limiting teeth (601) are threadedly connected to the adjusting screw (602).

5. A hoisting device according to claim 3 or 4, characterized in that: A plurality of mounting rods (303) are provided on the top of the hanging seat (3), the connecting plate (7) is sleeved on the plurality of mounting rods (303), and a limiting block (304) is provided at the end of each mounting rod (303).

6. A hoisting device according to claim 1, characterized in that: The lifting parts include: A crane (201) is slidably mounted on the I-shaped slide rail (2); A sling (202) is provided on the crane (201) and is connected to the sling seat (3).

7. A hoisting device according to claim 6, characterized in that: The end of the sling (202) is provided with a lifting hook (203), and the lifting hook (203) is hung on the lifting ring (301).

8. A hoisting device according to claim 1, characterized in that: The end of the connecting rope (8) is provided with a connecting hook (801), and the connecting hook (801) is hung on the connecting ring (101).

9. A hoisting device according to claim 1, characterized in that: Limiting wheels (9) are rotatably provided on both sides of the installation groove (305), and the connecting rope (8) is overlapped with the limiting wheels (9).

10. A hoisting method, characterized in that: The hoisting device according to any one of claims 1 to 9 further comprises the following steps: S1: Processing the flue (1), symmetrically installing two connecting rings (101) on the inner wall of the flue (1); S2: Confirm the hanging point, use Tekla software to carry out modeling work, and use the COG command to find the exact position of the center of gravity of the flue (1); S3: Track paving: Arrange the I-shaped slide rail (2) horizontally along the axis of the narrow space, install the hanging parts on the I-shaped slide rail (2), and the hanging parts can slide smoothly on the I-shaped slide rail (2); S4: adjusting the length of the connecting rope (8), connecting the two connecting ropes (8) to the two connecting hoisting rings (101) respectively, and rotating the reel (4) by adjusting the locking unit, so that the lengths of the two connecting ropes (8) are respectively lengthened and shortened, until the two connecting ropes (8) are in a straight state and the hoisting seat (3) is in the gravity area; S5: Hoisting the flue (1), connecting the hoisting seat (3) to the hoisting piece, controlling the hoisting piece to lift the flue (1) vertically to a specified height, and then controlling the hoisting piece to move on the I-shaped slide rail (2) to move the flue (1) horizontally to the installation position. S6: Splice the flue (1), release the connection between the connecting rope (8) and the connecting ring (101), control the lifting parts to move to the initial lifting position on the I-shaped slide rail (2), repeat S1-S5, complete the lifting of all the flues (1), and splice them one by one.

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