Large prefabricated column hoisting device and method

Abstract

The invention relates to a large prefabricated column hoisting device and method, and relates to the technical field of building hoisting, the hoisting device comprises two sets of hoisting shaft assemblies which are located at the two ends of a prefabricated column respectively and used for installing hoisting slings of hoisting equipment, and a steel sleeve for the hoisting shaft assemblies to penetrate through is pre-buried in the prefabricated column; the lifting shaft assembly comprises a lifting rod, outer steel plate blocking pieces located at the two ends of the lifting rod and used for preventing the sling from falling off, and anti-falling bolts used for fixing the outer steel plate blocking pieces. Wherein an auxiliary hoisting assembly used for balancing stress distribution and improving hoisting stability is arranged at one hoisting shaft assembly, and the auxiliary hoisting assembly is located on the upper portion of the prefabricated column in the vertical state. According to the hoisting device, the mode that the hoisting shaft assembly is inserted into the steel sleeve and combined with the peripheral auxiliary hoisting assembly is adopted, the flexibility and stability in the hoisting process are improved, the hoisting posture and the spatial position of the prefabricated column can be better controlled, and the hoisting device adapts to the complex construction site environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of building hoisting, and particularly relates to a large precast column hoisting device and method. Background Art

[0002] With the development of modern building technology, the prefabricated construction technology of prefabricated buildings has been applied on a larger scale. In particular, the application of large precast columns in high-rise buildings, bridges and other projects is increasing. During the conventional hoisting process of precast columns, lifting rings are buried on the side of the columns. However, the weight of large precast columns is too large, and when the lifting rings are applied to such heavy precast columns, it is extremely easy for the concrete around the lifting rings to be damaged due to excessive stress. Moreover, during operations such as turning over, lifting and hoisting using the lifting rings, it is impossible to ensure that the lifting rings are vertically stressed, and the lifting rings are easily damaged, thus triggering safety accidents.

[0003] Existing large precast column hoisting devices generally use the method of embedding steel sleeves to replace the lifting rings, but there are several deficiencies. For example, it is difficult to balance the stress distribution, and it is easy to have a situation where the single-point stress is too large, resulting in local stress concentration, increasing the risk of damage to the precast column. During the hoisting process, the precast column is prone to swing and displacement. The instability not only affects the hoisting accuracy, but may also cause the precast column to collide with other structures or equipment, and even trigger serious accidents such as tilting. Moreover, the existing hoisting devices usually rely on the experience judgment of operators and lack effective visualization tools to monitor the posture and path of the precast column in real time, increasing the operation difficulty and risk.

[0004] Therefore, we provide a large precast column hoisting device and method to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a large precast column hoisting device and method for the problems in the background art.

[0006] The present invention realizes the above purpose through the following technical solutions:

[0007] A large precast column hoisting device includes two sets of suspension shaft assemblies for installing hoisting equipment at both ends of the precast column respectively. Steel sleeves for the suspension shaft assemblies to penetrate are embedded in the precast column. The suspension shaft assembly includes a suspension rod, outer steel plate retaining pieces located at both ends of the suspension rod for preventing the hoisting tackle from falling off, and anti-detachment bolts for fixing the outer steel plate retaining pieces. An auxiliary hoisting assembly for balancing the stress distribution and improving the hoisting stability is provided at one of the suspension shaft assemblies, and the auxiliary hoisting assembly is located at the upper part of the precast column in a vertical state. The auxiliary hoisting assembly includes side rod bodies located on both sides of the suspension rod and a frame unit for supporting the side rod bodies, and the side rod bodies are in contact with the side surface of the precast column.

[0008] As a further optimized solution of the present invention, the anti-loosening bolt includes a first screw rod and a second screw rod; the first screw rod is disposed through the end of the hanging rod and locked by a nut, the second screw rod is disposed through the end of the first screw rod and locked by a nut, and the end of the second screw rod is fixedly connected to the outer side of the outer steel plate baffle.

[0009] As a further optimized solution of the present invention, the hanging shaft assembly further includes two inner steel plate baffles located inside the corresponding outer steel plate baffles. A buffer pad is provided on the inner side of the inner steel plate baffle, and the inner steel plate baffle is movably sleeved on the hanging rod; a rotating sleeve is movably sleeved on the hanging rod between the outer steel plate baffle and the inner steel plate baffle, and the sling is installed on the rotating sleeve.

[0010] As a further optimized solution of the present invention, three additional stirrups are provided on each side of the steel casing.

[0011] As a further optimized solution of the present invention, a buffer sleeve is sleeved on the side rod body.

[0012] As a further optimized solution of the present invention, the frame unit includes two relatively arranged fixing plates. The fixing plates are sleeved on the ends of the hanging rods. Movable plates are hinged at both ends of the fixing plates and locked by fasteners. A slider is slidably provided in the inner cavity of the movable plate. The end of the side rod body is rotatably arranged in the slider and locked by fasteners; an adjusting screw rod for adjusting the position of the slider is further provided in the inner cavity of the movable plate. One end of the adjusting screw rod is rotatably connected to the slider, and a bolt head is fixedly provided at the other end of the adjusting screw rod.

[0013] As a further optimized solution of the present invention, a surrounding observation component is further provided outside the auxiliary hoisting component. The observation component is used to intuitively display the hoisting path and attitude of the precast column on the ground by using laser projection technology.

[0014] As a further optimized solution of the present invention, the observation component includes a mounting frame fixed on the fixing plate, four electric adjusting feet located at the four corners of the bottom of the mounting frame, and a horizontal frame located at the bottom of the four electric adjusting feet; a gyroscope sensor is provided on the horizontal frame, and a controller is provided on the mounting frame. The controller controls the telescopic adjustment of the electric adjusting feet based on the gyroscope sensor data to realize the automatic leveling of the horizontal frame; second laser light strips are provided at various parts of the bottom of the horizontal frame, and first laser light strips are provided at various parts of the bottom of the side rod body and the fixing plate.

[0015] The present invention also provides a method for hoisting a large precast column, including the following steps:

[0016] S1. Insert two groups of hanging shaft assemblies into the corresponding steel casings respectively, and install an auxiliary hoisting component outside one group of hanging shaft assemblies;

[0017] S2. Install the slings of the two lifting devices onto the corresponding lifting shaft assemblies respectively. Lift the precast column to the vertical state by the cooperation of the two lifting devices, and ensure that the auxiliary lifting assembly is located at the upper end of the precast column.

[0018] S3. Lift and move the precast column to the target location by the cooperation of the two lifting devices.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention adopts the method of lifting with two lifting devices in combination with inserting the lifting shaft assembly into the steel sleeve, which increases the flexibility during the lifting process and the adaptability to different working conditions. Especially for the lifting of large precast columns, by reasonably distributing the lifting forces of the two lifting devices, the lifting posture and spatial position of the precast column can be better controlled, and it can adapt to the complex construction site environment.

[0021] 2. By setting the auxiliary lifting assembly, the present invention can balance the force distribution. The lifting rod and the two side rod bodies form a stable mechanical system, enabling the load to be more evenly distributed on the precast column, avoiding the situation of excessive single-point force, and being able to laterally limit the swing and displacement of the precast column, greatly enhancing the stability of the precast column during the lifting process and reducing the risks such as collision and inclination caused by shaking.

[0022] 3. By setting the observation assembly, a projection is formed on the ground by the laser, which can present the lifting path and posture changes of the precast column in an intuitive visual form to the surrounding construction personnel. Compared with the traditional method of relying on experience and simple measuring tools such as plumb lines to judge the lifting state of the precast column, the laser projection method is clearer and more accurate, greatly reducing the error of human judgment, enabling the construction personnel to quickly detect whether the precast column has shifted, and taking timely measures for adjustment to ensure the safe and smooth progress of the lifting operation. Description of the Drawings

[0023] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the precast column of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the lifting shaft assembly of the present invention;

[0026] Figure 4 It is a schematic diagram of the assembled structure of the lifting shaft assembly, the auxiliary lifting assembly and the observation assembly of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the auxiliary lifting assembly of the present invention Figure 1 ;

[0028] Figure 6 The auxiliary lifting assembly structure of the present invention is schematically shown in FIG. Figure 2 ;

[0029] Figure 7 It is a schematic diagram of the structure of the observation component of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the hoisting process of the present invention.

[0031] In the figure:

[0032] 1. Suspension shaft assembly; 101. Suspension rod; 102. Outer steel plate baffle; 103. Anti-drop bolt; 103a. First screw; 103b. Second screw; 104. Inner steel plate baffle; 105. Buffer pad; 106. Rotating sleeve; 2. Prefabricated column; 201. Steel casing; 202. Additional stirrups; 3. Auxiliary lifting assembly; 301. Side rod; 302. Buffer sleeve; 303. Fixed plate; 304. Movable plate; 305. Slider; 306. Adjusting screw; 307. Bolt head; 308. First laser light bar; 4. Observation assembly; 401. Mounting frame; 402. Electric adjustment foot; 403. Leveling frame; 404. Gyroscope sensor; 405. Controller; 406. Second laser light bar. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0034] Embodiment 1

[0035] In order to solve the problem that the existing large prefabricated column hoisting device is difficult to evenly distribute the force, the prefabricated column is easily damaged by excessive force at a single point, and it is easy to swing and displace during hoisting, with poor stability and easy to cause collision, tilt and other risks due to shaking, please refer to Figures 1 - 5 , Figure 8, a large precast column hoisting device provided by the present invention includes two sets of suspension shaft assemblies 1 for installing hoisting equipment sling located at both ends of the precast column 2. Steel sleeves 201 for the suspension shaft assemblies 1 to penetrate are embedded in the precast column 2. Embedding steel sleeves 201 at both ends of the precast column 2 as the hoisting connection points has stronger versatility compared with the traditional method of setting special lifting rings on the precast column 2, and has less impact on the appearance and mechanical properties of the overall structure of the precast column 2. The suspension shaft assembly 1 includes a suspension rod 101, outer steel plate shims 102 located at both ends of the suspension rod 101 for preventing the sling from falling off, and anti-drop bolts 103 for fixing the outer steel plate shims 102. The suspension rod 101 is made of 40Cr material, which reduces the self-weight of the suspension rod 101 while improving its bearing capacity and anti-fatigue performance, and reduces the risk of damage caused by long-term use or frequent hoisting. An auxiliary hoisting component 3 for balancing the force distribution and improving the hoisting stability is provided at one of the suspension shaft assemblies 1, and the auxiliary hoisting component 3 is located at the upper part of the precast column 2 in a vertical state. The auxiliary hoisting component 3 includes side rod bodies 301 located on both sides of the suspension rod 101 and a frame unit for supporting the side rod bodies 301. The side rod bodies 301 are in contact with the side surface of the precast column 2, and buffer sleeves 302 are sleeved on the side rod bodies 301.

[0036] The anti-drop bolt 103 includes a first screw rod 103a and a second screw rod 103b; the first screw rod 103a penetrates through the end of the suspension rod 101 and is locked by a nut, the second screw rod 103b penetrates through the end of the first screw rod 103a and is locked by a nut, and the end of the second screw rod 103b is fixedly connected to the outer side of the outer steel plate shim 102. The design of the anti-drop bolt 103 enables the position of the outer steel plate shim 102 on the suspension rod 101 to be adjusted to adapt to steel sleeves 201 with different depths.

[0037] The suspension shaft assembly 1 further includes two inner steel plate shims 104 located inside the corresponding outer steel plate shims 102. Buffer pads 105 are provided on the inner sides of the inner steel plate shims 104. The inner steel plate shims 104 are movably sleeved on the suspension rod 101; a rotating sleeve 106 is movably sleeved on the suspension rod 101 between the outer steel plate shims 102 and the inner steel plate shims 104, and the sling is installed on the rotating sleeve 106. The design of the inner steel plate shims 104, the buffer pads 105 and the rotating sleeve 106 can effectively prevent the sling from rubbing against the precast column 2 frequently during hoisting.

[0038] On both sides of the steel casing 201, three additional stirrups 202 are provided respectively. Locally strengthening the joint part of the steel casing 201 and the precast column 2 can effectively restrain the deformation of the concrete around the steel casing 201, improve the compressive strength and crack resistance of the concrete in this area, thereby enhancing the bonding and anchoring performance between the steel casing 201 and the concrete, ensuring that during the hoisting process, there will be no problems such as relative slip between the steel casing 201 and the precast column 2 or local concrete failure, and further ensuring the safety of the hoisting operation.

[0039] To enhance the adaptability of the auxiliary hoisting assembly 3, as Figure 5 shown, the frame unit includes two oppositely arranged fixing plates 303. The fixing plates 303 are sleeved on the ends of the lifting rods 101. At both ends of the fixing plates 303, movable plates 304 are hinged and locked by fasteners. A slider 305 is slidably arranged in the inner cavity of the movable plate 304. The end of the side rod body 301 is rotatably arranged in the slider 305 and locked by fasteners; an adjusting screw 306 for adjusting the position of the slider 305 is also arranged in the inner cavity of the movable plate 304. One end of the adjusting screw 306 is rotatably connected to the slider 305, and a bolt head 307 is fixedly arranged at the other end of the adjusting screw 306.

[0040] The movable plate 304 adopts a rotatable design method, which is convenient to adjust the angle according to the specific shape, size and hoisting requirements of the precast column 2, adjust the positions of the two side rod bodies 301, make it better fit the surface of the precast column 2, provide more stable support, and meet the requirements of various complex hoisting working conditions. There is no need to frequently replace or re - design the auxiliary hoisting assembly 3. During adjustment, loosen the fasteners between the side rod body 301 and the slider 305. At this time, the side rod body 301 can rotate freely. Loosen the fasteners between the fixing plate 303 and the movable plate 304. At this time, the movable plate 304 can rotate freely. After adjusting the side rod body 301 to abut against the side surface of the precast column 2 and ensuring that the first laser light bar 308 is at the bottom, tighten the corresponding fasteners.

[0041] The method of lifting with two lifting devices and inserting the lifting shaft component 1 in the steel casing 201 increases the flexibility of the lifting process and the adaptability to different working conditions. Especially for the lifting of large prefabricated columns 2, by reasonably allocating the lifting force of the two lifting devices, the lifting posture and spatial position of the prefabricated column 2 can be better controlled to adapt to the complex construction site environment. The auxiliary lifting component 3 can balance the force distribution, and the hanging rod 101 inserted in the steel casing 201 can provide the main vertical load and centering positioning function, ensuring that the prefabricated column 2 remains vertical during the lifting process and is located at the prefabricated column The side rods 301 on both sides of the outer part of the precast column 2 are in contact with the column body, which can limit the swing and displacement of the precast column 2 from the side, greatly enhance the stability of the precast column 2 during the hoisting process, and reduce the risks of collision, tilting, etc. caused by shaking. The three rods cooperate with each other to form a stable mechanical system, so that the load can be more evenly distributed on the precast column 2, avoiding the situation where a single point is subjected to excessive force. Compared with the lifting of a single hanging shaft, it can effectively reduce the stress concentration phenomenon in the local part of the precast column 2, reduce the possibility of cracks or damage to the concrete due to stress concentration, and protect the structural integrity of the precast column 2.

[0042] Embodiment 2

[0043] On the basis of the first embodiment, in order to further improve the safety during the hoisting process and improve the construction efficiency, as follows Figure 1 , Figures 6 - 7 As shown, a surrounding observation component 4 is also provided outside the auxiliary hoisting component 3, and the observation component 4 is used to use laser projection technology to intuitively display the hoisting path and posture of the prefabricated column 2 on the ground.

[0044] The observation component 4 includes a mounting frame 401 fixed on the fixed plate 303, four electric adjustment feet 402 located at the four corners of the bottom of the mounting frame 401, and a horizontal frame 403 located at the bottom of the four electric adjustment feet 402; a gyroscope sensor 404 is provided on the horizontal frame 403, and the number of gyroscope sensors 404 installed is generally 3 or 6, depending on the actual needs and accuracy requirements. A controller 405 is provided on the mounting frame 401, and the controller 405 controls the extension and retraction adjustment of the electric adjustment feet 402 based on the data of the gyroscope sensor 404 to achieve automatic leveling of the horizontal frame 403; a second laser light bar 406 is provided at various locations on the bottom of the horizontal frame 403, and a first laser light bar 308 is provided at various locations on the bottom of the side rod body 301 and the fixed plate 303.

[0045] The horizontal frame 403 is made of a lightweight and high-strength material. The gyroscope sensor 404 is used to measure the attitude change of the horizontal frame 403 in real time, accurately detect the angular deviation of the horizontal frame 403 in all directions, and transmit the data to the controller 405. The controller 405 analyzes and processes the data. When it detects that the horizontal frame 403 is tilted, it calculates the amount that needs to be adjusted according to the tilt direction and angle, and sends a control signal to the corresponding electric adjusting feet 402. By adjusting the height or angle of the electric adjusting feet 402, the horizontal frame 403 is restored to the horizontal state to ensure that the horizontal frame 403 always remains horizontal during the hoisting process. A horizontal frame 403 that always remains horizontal is set, and a second laser light bar 406 is installed at its bottom to provide a stable and reliable reference for judgment. Any deviation of the projection of the precast column 2 can clearly show the change in the attitude of the precast column 2. This comparison method based on a stable reference enhances the accuracy and reliability of the judgment.

[0046] During use, the projection of the precast column 2 is formed on the ground by irradiating with the first laser light bar 308, and the projection of the horizontal frame 403 is formed on the ground by irradiating with the second laser light bar 406. The hoisting path of the precast column 2 can be intuitively displayed through the projection, ensuring that it is within the planned path. It can also reflect the attitude change of the precast column 2 during the hoisting process in real time. When the hoisting operation is in progress dynamically, once the attitude of the precast column 2 deviates, the relative position of the two laser projections on the ground immediately changes, and the surrounding personnel can quickly react and notify the crane operator to adjust the hoisting parameters to avoid further expansion of the deviation and effectively prevent the occurrence of safety accidents, improving the construction efficiency.

[0047] Embodiment III

[0048] The present invention also provides a large precast column hoisting method, including the following steps:

[0049] S1. The cross-sectional size of the precast column 2 hoisted in this embodiment is 1300*600mm, the maximum length is 28.6m, and the maximum weight of a single column is 52t. The precast column 2 is precast in a horizontal position to facilitate laying the bottom formwork and is not prone to tipping during the construction process. Each corbel structure is located on the side to facilitate formwork erection. Steel sleeves 201 are embedded at appropriate positions at both ends during the manufacturing process. The specification of the steel sleeve 201 at the upper part in the hoisting and upright state is The specification of the steel sleeve 201 at the lower part in the hoisting and upright state is Three additional stirrups 202 are arranged on each side of each steel sleeve 201;

[0050] S2. Pass the high-strength fiber sling through the precast column 2, select a 260t crawler crane as the main hoist and a 130t crawler crane as the auxiliary hoist, and cooperate to lift and turn over the precast column 2 to complete demoulding. After completion, slowly place the precast column 2 on two supports;

[0051] S3. After the precast column 2 is turned over and demoulded, it is lifted for the second time. The second lifting adopts the lifting method. The two groups of suspension shaft assemblies 1 are respectively inserted into the corresponding steel sleeves 201. An auxiliary lifting assembly 3 and an observation assembly 4 are additionally installed outside one group of suspension shaft assemblies 1.

[0052] S4. The slings of the two hoisting devices are respectively installed on the corresponding suspension shaft assemblies 1, that is, the 260t crawler crane lifts the upper suspension shaft assembly 1, and the 130t crawler crane lifts the lower suspension shaft assembly 1. Additionally, a balance beam needs to be set in the middle of the slings to prevent the slings from rubbing against the precast column 2. Through the cooperation of the two hoisting devices, the precast column 2 is lifted to the vertical state. During this period, it is ensured that the corners of the precast column 2 do not touch the ground, and it is ensured that the auxiliary lifting assembly 3 is located at the upper end of the precast column 2. The slings of the two hoisting devices should be kept in a vertical state.

[0053] S5. The precast column 2 is lifted to the target location through the cooperation of the two hoisting devices.

[0054] The above embodiments only represent one implementation mode of the present invention, and the description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A large prefabricated column hoisting device, comprising two sets of hoisting shaft assemblies (1) respectively located at both ends of the prefabricated column (2) and used for installing the hoisting slings of the hoisting equipment, characterized in that: The prefabricated column (2) is pre-buried with a steel casing (201) for the suspension shaft assembly (1) to penetrate, and the suspension shaft assembly (1) comprises a suspension rod (101), outer steel plate baffles (102) located at both ends of the suspension rod (101) for preventing the sling from falling off, and anti-falling bolts (103) for fixing the outer steel plate baffles (102); An auxiliary hoisting assembly (3) for balancing force distribution and improving hoisting stability is provided at one of the suspension shaft assemblies (1), and the auxiliary hoisting assembly (3) is located on the upper part of the prefabricated column (2) in a vertical state. The auxiliary hoisting assembly (3) comprises side rod bodies (301) located on both sides of the suspension rod (101) and a frame unit for supporting the side rod bodies (301), and the side rod bodies (301) are in contact with the side surfaces of the prefabricated column (2).

2. A large prefabricated column hoisting device according to claim 1, characterized in that: The anti-drop bolt (103) comprises a first screw rod (103a) and a second screw rod (103b); The first screw rod (103a) is passed through the end of the suspension rod (101) and is locked by a nut, and the second screw rod (103b) is passed through the end of the first screw rod (103a) and is locked by a nut, and the end of the second screw rod (103b) is fixedly connected to the outer side of the outer steel plate baffle (102).

3. A large prefabricated column hoisting device according to claim 1, characterized in that: The suspension shaft assembly (1) further comprises two inner steel plate baffles (104) located inside the corresponding outer steel plate baffles (102), a buffer pad (105) being provided inside the inner steel plate baffles (104), and the inner steel plate baffles (104) are movably sleeved on the suspension rod (101); A swivel sleeve (106) is movably mounted on the suspension rod (101) between the outer steel plate baffle (102) and the inner steel plate baffle (104), and the suspension sling is installed on the swivel sleeve (106).

4. A large prefabricated column hoisting device according to claim 1, characterized in that: Three additional stirrups (202) are respectively arranged on both sides of the steel casing (201).

5. The large prefabricated column hoisting device according to claim 1, characterized in that: The side rod body (301) is sleeved with a buffer sleeve (302).

6. A large prefabricated column hoisting device according to claim 1, characterized in that: The frame unit comprises two fixed plates (303) arranged opposite to each other, the fixed plates (303) are sleeved on the ends of the suspension rod (101), both ends of the fixed plates (303) are hingedly provided with movable plates (304) and are locked by fasteners, a slider (305) is slidably provided in the inner cavity of the movable plate (304), and the end of the side rod body (301) is rotatably arranged in the slider (305) and is locked by fasteners; An adjusting screw (306) for adjusting the position of the slider (305) is also provided in the inner cavity of the movable plate (304); one end of the adjusting screw (306) is rotatably connected to the slider (305), and the other end of the adjusting screw (306) is fixedly provided with a bolt head (307).

7. A large prefabricated column hoisting device according to claim 6, characterized in that: A surrounding observation component (4) is also provided outside the auxiliary lifting component (3), and the observation component (4) is used to use laser projection technology to intuitively display the lifting path and posture of the prefabricated column (2) on the ground.

8. A large prefabricated column hoisting device according to claim 7, characterized in that: The observation assembly (4) comprises a mounting frame (401) fixed on a fixing plate (303), four electric adjustment feet (402) located at the four corners of the bottom of the mounting frame (401), and a horizontal frame (403) located at the bottom of the four electric adjustment feet (402); The horizontal frame (403) is provided with a gyroscope sensor (404), and the installation frame (401) is provided with a controller (405), and the controller (405) controls the electric adjustment foot (402) to extend and retract based on data from the gyroscope sensor (404) to achieve automatic leveling of the horizontal frame (403); Second laser light bars (406) are provided at various locations on the bottom of the horizontal frame (403), and first laser light bars (308) are provided at various locations on the bottom of the side rod body (301) and the fixing plate (303).

9. A method for hoisting a large prefabricated column, using a large prefabricated column hoisting device as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1, inserting two sets of suspension shaft assemblies (1) into corresponding steel casings (201) respectively, and installing an auxiliary suspension assembly (3) outside one set of suspension shaft assemblies (1); S2, respectively installing the lifting slings of the two lifting devices on the corresponding lifting shaft components (1), lifting the prefabricated column (2) to an upright state by coordinating the lifting of the two lifting devices, and ensuring that the auxiliary lifting component (3) is located at the upper end of the prefabricated column (2); S3. The prefabricated column (2) is lifted to the target location by the cooperation of two lifting devices.

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