Method for lifting and hoisting prefabricated blocks and its lifting device

Abstract

This invention relates to a lifting method and lifting device for adjustable precast blocks, belonging to the field of lifting device technology. The lifting method for adjustable precast blocks includes the following steps: S1, connecting the top of the lifting rod of the lifting device to a first lifting hook; connecting one end of the traction rope inside the lifting rod to a second lifting hook; and passing the other end through an opening at the top of the lifting rod, through the inside of the lifting rod, and connecting to a rotating block at the bottom of the lifting rod. Lifting the second lifting hook causes the traction rope to retract the rotating block. S2, lifting the first lifting hook controls the lifting rod to enter the lifting hole of the precast block. S3, loosening the second lifting hook slackens the traction rope, automatically restoring the rotating block to the open state. Lifting the first lifting hook causes the rotating block to engage in the lifting hole, and the lifting rod lifts the precast block. The orientation of the precast block is adjusted to a preset position using the adjusting component at the bottom of the lifting rod. This lifting method simplifies the lifting operation process and improves the efficiency and accuracy of precast block lifting construction.

Description

Technical Field

[0001] This invention belongs to the field of lifting equipment technology, and particularly relates to a lifting method and lifting equipment for an adjustable prefabricated block. Background Technology

[0002] Gravity block piers or dikes are walls formed by a certain number of precast solid or hollow concrete blocks constructed using a specific masonry method. During the construction of gravity piers, the precast blocks need to be accurately placed in designated locations to ensure the structural stability and durability of the pier; therefore, the hoisting of the precast blocks is crucial.

[0003] Currently, the traditional process for hoisting precast blocks involves using a floating crane vessel connected to a hoisting device to lift, position, install, and adjust the blocks. The automatic unhooking technology of the hoisting device greatly assists in the hoisting process.

[0004] In the prior art, Chinese invention patent application CN112173969A proposes a hydraulic self-balancing lifting system and its working method for large components. This system lifts large components using lifting rings at the bottom of the lifting frame, monitors the position and attitude parameters of the large component using wireless tilt sensors mounted on the lifting frame and on the bottom surface of the large component, and adjusts the attitude of the large component using hydraulic cylinders. While this patent can accurately lift large components to a preset position, its complex structure and cumbersome operation result in low lifting efficiency and make it unsuitable for lifting prefabricated blocks in engineering projects.

[0005] Therefore, how to provide hoisting equipment for lifting precast blocks is a technical problem that urgently needs to be solved. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a hoisting method and hoisting device for adjustable precast blocks. By controlling the state of the rotating block with a traction rope, operators can easily adjust the rotating block to a retracted or open state. Furthermore, by adjusting the position of the precast block with an adjusting component, the hoisting operation process is simplified, improving the efficiency and accuracy of precast block hoisting construction.

[0007] This invention provides a hoisting method for adjustable prefabricated blocks, comprising the following steps:

[0008] S1, connect the top of the lifting boom of the lifting device to the first lifting hook, connect one end of the traction rope inside the lifting boom to the second lifting hook, and pass the other end through the opening at the top of the lifting boom, through the inside of the lifting boom, and connect to the rotating block at the bottom of the lifting boom. Lift the second lifting hook, and the traction rope drives the rotating block to the retracted state.

[0009] S2, keep the rotating block in the retracted state, raise the first lifting hook, and control the boom to enter the lifting hole of the precast block;

[0010] S3, loosen the second lifting hook, the traction rope slackens, the rotating block automatically returns to the open state, lift the first lifting hook, the rotating block is locked in the lifting hole, the boom lifts the precast block, and the position of the precast block is adjusted to the preset position using the adjustment piece at the bottom of the boom.

[0011] This technical solution controls the state of the rotating block through a traction rope, allowing operators to easily adjust the rotating block to a retracted or open state; it also simplifies the hoisting operation process by adjusting the position of the precast block through an adjusting component, improving the efficiency and accuracy of the precast block hoisting construction; after the rotating block is locked in the hoisting hole, the hoisting rod can steadily lift the precast block, ensuring the stability and safety of the precast block during the hoisting process.

[0012] In some embodiments, in step S3, when adjusting the orientation of the precast block, if the precast block has a directional deviation, the one-way adjusting component at the bottom of a single rod is controlled to adjust the orientation of the precast block; if the precast block has a positional deviation, the one-way adjusting component at the bottom of at least one rod is controlled to adjust the position of the precast block.

[0013] This technical solution, through the adjustment of the unidirectional adjustment component, can effectively correct the directional and positional deviations of the precast blocks during the hoisting process, ensuring that the precast blocks can be accurately positioned at the predetermined location.

[0014] In some embodiments, in step S3, when there is an directional deviation in the precast block, the bidirectional adjustment component at the bottom of a single rod is controlled to adjust the direction of the precast block; when there is a positional deviation in the precast block, the bidirectional adjustment component at the bottom of at least one rod is controlled to adjust the position of the precast block.

[0015] This technical solution uses bidirectional adjusting components to precisely adjust the direction and position of precast blocks, significantly improving hoisting accuracy and construction efficiency, and ensuring accurate positioning of the precast blocks. In addition, this invention also provides a hoisting tool for adjusting the posture of precast blocks, applied to the hoisting method for adjusting the posture of precast blocks as described above, including:

[0016] The lifting rod has three rods. The top of the lifting rod is used to connect the first lifting hook, and the bottom of the lifting rod is used to extend into the lifting hole inside the precast block to lift the precast block.

[0017] A connecting rod is installed between adjacent booms to connect them.

[0018] The rotating block has a through hole at the bottom of the lifting rod. The rotating block is installed in the through hole and is rotatably connected to the lifting rod. The rotating block has an open state and a retracted state. When the rotating block is in the retracted state, the lifting rod can extend into the lifting hole. When the rotating block is in the open state, the rotating block is locked in the lifting hole to lift the precast block.

[0019] The traction rope is hollow inside the boom with an opening at the top. One end of the traction rope is connected to the second lifting hook, and the other end passes through the opening and is connected to the rotating block to control the state of the rotating block.

[0020] The positioning component, installed at the bottom of the boom, is used to adjust the posture of the precast blocks.

[0021] This technical solution achieves precise hoisting of precast blocks in engineering projects through a simple mechanical structure consisting of a boom, connecting rod, rotating block, traction rope, and adjusting component. The simplified operation process also reduces the input of human resources.

[0022] In some embodiments, the adjustment component includes two vertically arranged one-way adjustment components. When there is a directional deviation in the precast block, the one-way adjustment component at the bottom of a single rod is controlled to adjust the direction of the precast block; when there is a positional deviation in the precast block, the one-way adjustment component at the bottom of at least one rod is controlled to adjust the position of the precast block.

[0023] This technical solution, by setting two mutually perpendicular unidirectional adjusting components, can effectively correct the directional and positional deviations of precast blocks during the hoisting process.

[0024] In some embodiments, the one-way adjustment component includes a hydraulic cylinder and a piston rod. When adjusting the orientation of the precast block, the hydraulic cylinder pushes the piston rod against the lifting hole and pushes the precast block to rotate or move.

[0025] This technical solution, through the combined use of hydraulic cylinders and piston rods, allows for flexible adjustment of the orientation of precast blocks.

[0026] In some embodiments, the adjusting component includes a bidirectional adjusting component, which is equipped with a bidirectional hydraulic cylinder, the pushing forces of the bidirectional hydraulic cylinders being perpendicular to each other; when there is a directional deviation in the precast block, the bidirectional adjusting component at the bottom of a single rod is controlled to adjust the direction of the precast block; when there is a positional deviation in the precast block, the bidirectional adjusting component at the bottom of at least one rod is controlled to adjust the position of the precast block.

[0027] This technical solution simplifies the structure of the adjustment component by setting up a bidirectional adjustment component, and can effectively improve the accuracy and flexibility during the hoisting process of prefabricated blocks.

[0028] In some embodiments, the lifting device for adjusting the orientation of the precast block also includes a telescopic rod, which is installed between the lifting rod and the adjusting component to adjust the height of the precast block.

[0029] This technical solution, through the installation of telescopic rods, allows for flexible adjustment of the height of prefabricated blocks, ensuring that they can be accurately positioned at the predetermined location.

[0030] In some embodiments, the telescopic rod is equipped with a telescopic hydraulic cylinder.

[0031] This technical solution, through the use of telescopic hydraulic cylinders, enables more precise control over the height adjustment of precast blocks.

[0032] In some embodiments, a fixing shaft for fixing the rotating block is provided inside the through hole, and the rotating block is rotatably connected to the fixing shaft.

[0033] This technical solution ensures that the rotating block can rotate and be fixed stably during hoisting by setting a fixed shaft.

[0034] Based on the above solution, the adjustable precast block hoisting method in this embodiment of the invention controls the state of the rotating block through a traction rope, allowing operators to easily adjust the rotating block to a retracted or open state, simplifying the hoisting operation process. After the rotating block is engaged in the hoisting hole, the hoisting rod can stably lift the precast block, ensuring the stability and safety of the precast block during the hoisting process. When there is an orientation deviation in the precast block, the adjustment component can be used to precisely correct the position and orientation of the precast block, ensuring that it is accurately positioned at the predetermined location. Furthermore, the hoisting method in this embodiment is applicable to precast blocks of different sizes and shapes, has strong adaptability, and can meet the needs of various engineering projects. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0036] Figure 1 This is a schematic diagram of the structure of the adjustable prefabricated block rotating block in Embodiment 1 of the present invention when it is in the open state;

[0037] Figure 2 This is a schematic diagram of the structure of the adjustable prefabricated block rotating block in Embodiment 1 of the present invention when it is in the retracted state;

[0038] Figure 3 This is a schematic diagram of the cross-sectional structure of the lifting rod of the lifting device with adjustable prefabricated block posture in Embodiment 1 of the present invention;

[0039] Figure 4 This is a schematic diagram of the structure of the prefabricated block in Embodiment 1 of the present invention;

[0040] Figure 5This is a perspective view of the lifting device with adjustable prefabricated block posture entering the lifting hole in Embodiment 1 of the present invention;

[0041] Figure 6 This is a schematic diagram of the structure of the adjustable prefabricated block rotating block in Embodiment 2 of the present invention when it is in the open state;

[0042] Figure 7 This is a schematic diagram of the structure of the adjustable prefabricated block rotating block in Embodiment 2 of the present invention when it is in the retracted state;

[0043] Figure 8 This is a perspective view of the lifting device with adjustable prefabricated block posture entering the lifting hole in Embodiment 2 of the present invention.

[0044] In the picture:

[0045] 1. Borehole; 2. Connecting rod; 3. Rotating block; 4. Traction rope; 5. Telescopic rod; 6. Adjustment component;

[0046] 7. Precast blocks;

[0047] 101. Lifting lug; 102. Opening;

[0048] 301. Fixed shaft; 302. Limiting rod; 303. Rope threading hole;

[0049] 501. Telescopic hydraulic cylinder;

[0050] 61. One-way adjusting component; 611. Base; 612. Hydraulic cylinder; 613. Piston rod; 62. Two-way adjusting component;

[0051] 701. Lifting hole. Detailed Implementation

[0052] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0054] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0055] The terms “system,” “unit,” and “module” used in this article are methods for distinguishing different components, elements, parts, sections, or assemblies at different levels. These terms may be replaced by other expressions that achieve the same purpose.

[0056] Example 1

[0057] like Figures 1-5 As shown, in one embodiment of the lifting method and lifting device for the adjustable precast block posture of the present invention, the lifting method for the adjustable precast block posture includes the following steps: S1, connecting the top of the lifting rod 1 of the lifting device to the first lifting hook, connecting one end of the traction rope 4 inside the lifting rod 1 to the second lifting hook, and connecting the other end through the opening 102 through the inside of the lifting rod 1 to the rotating block 3 at the lower part of the lifting rod 1, lifting the second lifting hook, and the traction rope 4 driving the rotating block 3 to the retracted state;

[0058] S2, keep the rotating block 3 in the retracted state, lift the first lifting hook, and control the lifting rod 1 to enter the lifting hole 701 of the precast block 7;

[0059] S3, loosen the second lifting hook, slack the traction rope 4, as follows Figure 5 As shown, the rotating block 3 automatically returns to the open state, lifts the first lifting hook, and the rotating block 3 is locked in the lifting hole 701. The lifting rod 1 drives the precast block 7 to be lifted, and the position of the precast block 7 is adjusted to the preset position using the adjustment part at the bottom of the lifting rod 1.

[0060] In the above illustrative embodiment, the hoisting method for adjusting the posture of the precast block controls the state of the rotating block 3 through the traction rope 4, allowing operators to easily adjust the rotating block 3 to a retracted or open state, simplifying the hoisting operation process. After the rotating block 3 is engaged in the lifting hole 701, the lifting rod 1 can stably lift the precast block 7, ensuring the stability and safety of the precast block 7 during the hoisting process. When the precast block 7 has an orientation deviation, the adjusting component 6 is used for adjustment, which can accurately correct the position and direction of the precast block 7, ensuring that it is accurately positioned to the predetermined position. Furthermore, the hoisting method in this embodiment is applicable to precast blocks 7 of different sizes and shapes, has strong adaptability, and can meet the needs of various engineering projects.

[0061] In some embodiments, in step S3, when there is an directional deviation in the precast block 7, the one-way adjusting member 61 at the bottom of a single lifting rod 1 is controlled to adjust the direction of the precast block 7; when there is a positional deviation in the precast block 7, the one-way adjusting member 61 at the bottom of at least one lifting rod 1 is controlled to adjust the position of the precast block 7. Through the adjustment of the one-way adjusting member 61, the directional and positional deviations of the precast block 7 during the hoisting process can be effectively corrected, ensuring that the precast block 7 can be accurately positioned at the predetermined location, thus improving the accuracy and efficiency of the hoisting.

[0062] Based on the above-described lifting method for adjustable precast block posture, this invention also provides a lifting device for adjustable precast block posture, applied to the above-described lifting method for adjustable precast block posture, including lifting rods 1, connecting rods 2, rotating blocks 3, and traction ropes 4; wherein, the lifting rods 1 are provided with three rods, the top of the lifting rods 1 is used to connect to the first lifting hook, and the lower part of the lifting rods 1 is used to extend into the lifting hole 701 inside the precast block 7 to lift the precast block 7; the connecting rods 2 are installed between adjacent lifting rods 1 for connecting the lifting rods 1; the lower part of the lifting rods 1... The part has a through hole, and the rotating block 3 is installed in the through hole and rotatably connected to the lifting rod 1. The rotating block 3 has an open state and a retracted state. When the rotating block 3 is in the retracted state, the lifting rod 1 can be inserted into the lifting hole 701. When the rotating block 3 is in the open state, the rotating block 3 is locked in the lifting hole 701 to lift the precast block 7. The lifting rod 1 is hollow inside and has an opening 102 at the top. One end of the traction rope 4 is connected to the second lifting hook, and the other end passes through the opening 102 and is connected to the rotating block 3 to control the state of the rotating block 3.

[0063] In the above illustrative embodiment, the lifting device that can adjust the posture of the precast block can realize the lifting of the precast block 7 in the project through a simple mechanical structure of lifting rod 1, connecting rod 2, rotating block 3 and traction rope 4. The simplified operation process also reduces the input of human resources, thereby reducing the overall construction cost. At the same time, through the setting of rotating block 3, the lifting rod 1 can be firmly locked in the lifting hole 701 of the precast block 7, ensuring that the precast block 7 will not be displaced or fall during the lifting process, thus enhancing the stability and safety of the lifting process.

[0064] In some embodiments, such as Figure 4 As shown, the upper diameter of the lifting hole 701 is larger than the diameter of the lifting rod 1 but smaller than the length of the rotating block 3, while the lower diameter is larger than the length of the rotating block 3. A horizontal step is provided at the point where the diameter of the lifting hole 701 changes, and the rotating block 3 is locked in the horizontal step when it is in the open state. By limiting the dimensions of the lifting hole 701 and the rotating block 3, it is ensured that the rotating block 3 is securely locked in the lifting hole 701 during the lifting process, further improving the stability and safety of the lifting.

[0065] In some embodiments, such as Figure 2As shown, each boom 1 is also equipped with a positioning component 6 at its bottom for adjusting the posture of the precast block 7. The positioning component 6 allows operators to easily adjust the posture of the precast block 7 during hoisting, ensuring that it can be accurately positioned at the predetermined location, thereby improving the accuracy and efficiency of hoisting.

[0066] Furthermore, such as Figure 3 As shown, the positioning component 6 includes two vertically arranged one-way adjusting components 61. When there is a directional deviation in the precast block 7, the one-way adjusting component 61 at the bottom of a single lifting rod 1 is controlled to adjust the direction of the precast block 7; when there is a positional deviation in the precast block 7, the one-way adjusting component 61 at the bottom of at least one lifting rod 1 is controlled to adjust the position of the precast block 7. By setting two mutually perpendicular one-way adjusting components 61, the directional and positional deviations of the precast block 7 during the hoisting process can be effectively corrected, ensuring that the precast block 7 can be accurately positioned to the predetermined position, thereby improving the accuracy and efficiency of hoisting.

[0067] In some embodiments, such as Figure 3 As shown, the one-way adjusting component 61 includes a hydraulic cylinder 612 and a piston rod 613. When adjusting the orientation of the precast block 7, the hydraulic cylinder 612 pushes the piston rod 613 to abut against the lifting hole 701, and pushes the precast block 7 to rotate or move. Through the coordinated use of the hydraulic cylinder 612 and the piston rod 613, the orientation of the precast block 7 can be flexibly adjusted, further improving the accuracy of the hoisting process and the convenience of operation.

[0068] In some embodiments, such as Figure 3 As shown, the one-way adjustment member 61 also includes a base 611 for fixing and mounting. The base 611 provides a stable mounting platform for the one-way adjustment member 61, ensuring the stability and reliability of the one-way adjustment member 61 during use.

[0069] In some embodiments, such as Figure 2 As shown, the lifting device for adjusting the posture of the precast block also includes a telescopic rod 5, which is installed between the lifting rod 1 and the adjusting component 6 to adjust the height of the precast block 7. The telescopic rod 5 allows for flexible adjustment of the height of the precast block 7, ensuring accurate positioning at the predetermined location and improving the accuracy and efficiency of the lifting operation.

[0070] In some embodiments, such as Figure 3 As shown, the telescopic rod 5 is equipped with a telescopic hydraulic cylinder 501. The telescopic hydraulic cylinder 501 allows for more precise control of the height adjustment of the precast blocks 7, further improving the stability and safety of the hoisting process.

[0071] In some embodiments, such as Figure 2As shown, a fixing shaft 301 for fixing the rotating block 3 is provided inside the through hole, and the rotating block 3 is rotatably connected to the fixing shaft 301. The fixing shaft 301 ensures that the rotating block 3 can rotate and be fixed stably during hoisting, thereby improving the reliability of hoisting.

[0072] In some embodiments, such as Figure 2 As shown, a limiting rod 302 is provided inside the through hole. The limiting rod 302 is used to limit the rotation angle of the rotating block 3 when it is retracted. By setting the limiting rod 302, excessive rotation of the rotating block 3 when it is retracted can be effectively prevented, ensuring the safety and stability of the hoisting process.

[0073] In some embodiments, such as Figure 2 As shown, the rotating block 3 has a rope hole 303 for threading the traction rope 4. The rope hole 303 allows the traction rope 4 to pass smoothly through the rotating block 3, making it easier for the operator to control the state of the rotating block 3 and improving the convenience of the hoisting operation.

[0074] In some embodiments, such as Figure 2 As shown, the top of the boom 1 is provided with a lifting lug 101. The lifting lug 101 provides a convenient fixing point for connecting lifting equipment, ensuring the safety and stability of the lifting process.

[0075] Example 2

[0076] The difference between this embodiment and Embodiment 1 is that:

[0077] The adjustable prefabricated block lifting device provided in this embodiment, such as... Figure 6 As shown, the adjusting component 6 includes a bidirectional adjusting component 62, which is equipped with a bidirectional hydraulic cylinder. The pushing forces of the bidirectional hydraulic cylinders are perpendicular to each other. When there is a directional deviation in the precast block 7, the bidirectional adjusting component 62 at the bottom of a single rod 1 is controlled to adjust the direction of the precast block 7. When there is a positional deviation in the precast block 7, the bidirectional adjusting component 62 at the bottom of at least one rod 1 is controlled to adjust the position of the precast block 7. Figure 7 This is a schematic diagram of the rotating block 3 of the lifting device for the adjustable precast block posture in Embodiment 2 when it is in the retracted state. The bidirectional adjusting component 62 simplifies the structure of the adjusting component and effectively improves the accuracy and flexibility during the lifting process of the precast block 7, ensuring that the precast block 7 can be accurately positioned at the predetermined location.

[0078] The adjustable prefabricated block hoisting method provided in this embodiment, such as... Figure 8As shown, after the lifting equipment enters the lifting hole 701, in step S3, when there is a directional deviation in the precast block 7, the bidirectional adjusting component 62 at the bottom of a single lifting rod 1 is controlled to adjust the direction of the precast block 7; when there is a positional deviation in the precast block 7, the bidirectional adjusting component 62 at the bottom of at least one lifting rod 1 is controlled to adjust the position of the precast block 7. By precisely adjusting the direction and position of the precast block 7 through the bidirectional adjusting component 62, the lifting accuracy and construction efficiency are significantly improved, ensuring that the precast block 7 is accurately positioned, simplifying the operation process, and improving the quality and safety of the project.

[0079] Through the description of several embodiments of the lifting method and lifting device for adjustable prefabricated blocks of the present invention, it can be seen that the lifting method and lifting device for adjustable prefabricated blocks of the present invention have at least one or more of the following advantages:

[0080] 1. The adjustable precast block hoisting method provided by the present invention can adjust the position and orientation of the precast block 7 by using the adjusting component 6 when there is an orientation deviation in the precast block 7, so as to ensure that it is accurately positioned at the predetermined position.

[0081] 2. The adjustable precast block lifting device provided by the present invention can realize the lifting of precast blocks 7 in engineering projects through a simple mechanical structure of lifting rod 1, connecting rod 2, rotating block 3 and traction rope 4. The simplified operation process also reduces the input of human resources, thereby reducing the overall construction cost.

[0082] 3. The adjustable precast block lifting device provided by the present invention, through the setting of the rotating block 3, allows the lifting rod 1 to be stably locked in the lifting hole 701 of the precast block 7, ensuring that the precast block 7 will not shift or fall during the lifting process, thereby enhancing the stability and safety of the lifting process.

[0083] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0084] The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of the present invention or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solutions of the present invention, and all such modifications and substitutions should be covered within the scope of the technical solutions claimed in the present invention.

Claims

1. A lifting device for adjustable prefabricated blocks, characterized in that, include: The lifting rod has three rods. The top of the lifting rod is used to connect the first lifting hook, and the bottom of the lifting rod is used to extend into the lifting hole inside the precast block to lift the precast block. A connecting rod is installed between adjacent booms to connect them. The rotating block has a through hole at the bottom of the lifting rod. The rotating block is installed in the through hole and rotatably connected to the lifting rod. The rotating block has an open state and a retracted state. When the rotating block is in the retracted state, the lifting rod can extend into the lifting hole. The upper diameter of the lifting hole is larger than the diameter of the lifting rod but smaller than the length of the rotating block, and the lower diameter is larger than the length of the rotating block. A horizontal step is provided at the change in diameter of the lifting hole. When the rotating block is in the open state, it is locked in the lifting hole to lift the precast block. The traction rope is hollow inside the boom with an opening at the top. One end of the traction rope is connected to the second lifting hook, and the other end passes through the opening and is connected to the rotating block to control the state of the rotating block. An adjustment component, installed at the bottom of the boom, is used to adjust the posture of the precast blocks. The adjustment component includes a bidirectional adjustment component or two vertically arranged unidirectional adjustment components. The bidirectional adjustment component is equipped with a bidirectional hydraulic cylinder, and the pushing forces of the bidirectional hydraulic cylinders are perpendicular to each other. When there is a directional deviation of the precast blocks, the bidirectional adjustment component or unidirectional adjustment component at the bottom of a single boom is controlled to adjust the direction of the precast blocks. When there is a positional deviation of the precast blocks, the position of the precast blocks is adjusted by controlling the bidirectional adjustment component or unidirectional adjustment component at the bottom of at least one boom.

2. The lifting device for adjustable prefabricated block posture according to claim 1, characterized in that, The one-way adjustment component includes a hydraulic cylinder and a piston rod. When adjusting the orientation of the precast block, the hydraulic cylinder pushes the piston rod to block the lifting hole and pushes the precast block to rotate or move.

3. The lifting device for adjustable prefabricated block posture according to claim 1, characterized in that, It also includes telescopic rods, which are installed between the hangers and the adjusting components to adjust the height of the precast blocks.

4. The lifting device for adjustable prefabricated block posture according to claim 3, characterized in that, The telescopic rod is equipped with a telescopic hydraulic cylinder.

5. The lifting device for adjustable prefabricated block posture according to claim 1, characterized in that, The through hole has a fixed shaft for fixing the rotating block, and the rotating block is rotatably connected to the fixed shaft.

6. A hoisting method for adjustable prefabricated blocks, characterized in that, The lifting device applied to the adjustable prefabricated block posture as described in any one of claims 1-5 includes the following steps: S1, connect the top of the lifting boom of the lifting device to the first lifting hook, connect one end of the traction rope inside the lifting boom to the second lifting hook, and pass the other end through the opening at the top of the lifting boom, through the inside of the lifting boom, and connect to the rotating block at the bottom of the lifting boom. Lift the second lifting hook, and the traction rope drives the rotating block to the retracted state. S2, keep the rotating block in the retracted state, raise the first lifting hook, and control the boom to enter the lifting hole of the precast block; S3, loosen the second lifting hook, the traction rope slackens, the rotating block automatically returns to the open state, lift the first lifting hook, the rotating block is locked in the lifting hole, the boom lifts the precast block, and the orientation of the precast block is adjusted to the preset orientation using the adjusting parts at the bottom of the boom; when the precast block has a directional deviation, control the bidirectional or unidirectional adjusting parts at the bottom of a single boom to adjust the orientation of the precast block; when the precast block has a positional deviation, control the bidirectional or unidirectional adjusting parts at the bottom of at least one boom to adjust the position of the precast block.

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