Lifting appliance for lifting prefabricated square block

Abstract

The utility model relates to a lifting appliance for lifting a prefabricated square block, which belongs to the technical field of lifting appliances and comprises a lifting rod, a connecting rod, a rotating block and an adjusting piece, wherein at least one lifting rod is arranged, the top of the lifting rod is used for being connected with a first lifting hook, and the lower portion of the lifting rod is used for stretching into a lifting hole in a prefabricated square block to lift the prefabricated square block; the connecting rods are mounted between the adjacent suspenders and used for connecting the suspenders; a through hole is formed in the lower portion of the suspender, and the rotating block is installed in the through hole and rotatably connected with the suspender. The rotating block has an opening state and a folding state; the suspender is hollow, and the adjusting piece is arranged in the suspender, connected with the rotating block and used for adjusting the state of the rotating block. According to the lifting appliance for lifting the prefabricated square block, through the arrangement of the rotating block and the adjusting piece, it can be ensured that the prefabricated square block can be lifted more rapidly, operation such as lifting, positioning and mounting of the prefabricated square block can be completed rapidly, and the lifting efficiency of the prefabricated square block is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of lifting equipment technology, and in particular relates to a lifting equipment for lifting prefabricated blocks. 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. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a lifting device for hoisting precast blocks. By installing a rotating block at the lower part of the lifting rod, the lifting rod can be firmly locked into the lifting hole of the precast block, ensuring that the precast block can be lifted more quickly and without shifting during hoisting and placement. At the same time, through the setting of the adjustment component, the rotating block can be quickly switched between the open and retracted states, thereby enabling the lifting, positioning and installation of precast blocks to be completed quickly, greatly improving the hoisting efficiency of precast blocks.

[0007] This utility model provides a lifting device for hoisting precast blocks, comprising:

[0008] A lifting rod is provided, at least one lifting rod is provided, the top of the lifting rod is used to connect the first lifting hook, and the lower part of the lifting rod is used to extend into the lifting hole inside the precast block to lift the precast block;

[0009] A connecting rod, which is installed between adjacent booms, is used to connect the booms;

[0010] 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.

[0011] The adjusting component is hollow inside the boom and is connected to the rotating block to adjust the state of the rotating block.

[0012] This technical solution incorporates a rotating block at the bottom of the lifting rod, allowing the rod to be securely engaged within the lifting holes of the precast block. This ensures the precast block can be lifted more quickly and without shifting during lifting and placement. Furthermore, the adjustable mechanism allows for rapid switching between the open and retracted states of the rotating block, enabling quick completion of lifting, positioning, and installation operations for the precast block, significantly improving the lifting efficiency.

[0013] In some embodiments, the adjusting component includes a driver and a rocker arm. The driver is fixed inside the boom, one end of the rocker arm is hinged to the driver, and the other end is connected to the rotating block. The driver drives the rocker arm to rotate around the hinge point, thereby rotating the rotating block to retract or extend it. In this technical solution, the driver can precisely drive the rotating block to rotate by driving the rocker arm around the hinge point, thus achieving the conversion between its retracted and extended states.

[0014] In some embodiments, the drive element includes a hydraulic cylinder, and the rocker arm is connected to the hinge point of the hydraulic cylinder.

[0015] In some embodiments, a fixing shaft is provided inside the through hole for fixing the rotating block, and the rotating block is rotatably connected to the fixing shaft. This technical solution, through the setting of the fixing shaft, provides a stable and reliable structural foundation for the installation and rotation of the rotating block, while simultaneously defining the rotation path and position of the rotating block.

[0016] In some embodiments, a pad is also provided in the lifting hole inside the precast block, and the rotating block fits against the pad when the rotating block is in the open state. This technical solution increases the friction and support area at the contact point between the rotating block and the precast block by setting the pad, which can better distribute the weight of the precast block during the lifting process.

[0017] In some embodiments, a support leg is provided below the connecting rod to limit the depth of the lifting rod's insertion into the precast block. The support leg is arranged parallel to the lifting rod, and when the lifting rod is inserted into the lifting hole inside the precast block, the bottom of the support leg rests against the surface of the precast block. This technical solution, through the setting of the support leg, can accurately limit the insertion depth of the lifting rod, avoiding safety accidents such as tilting or falling of the precast block due to improper insertion depth of the lifting rod.

[0018] In some embodiments, 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, while the lower diameter is larger than the length of the rotating block. This technical solution not only meets the needs of different stages during the lifting operation but also ensures the stability of the connection between the rotating block and the lifting hole.

[0019] In some embodiments, the top of the boom is provided with a lifting lug for connecting the lifting equipment. This technical solution addresses the issue that the lifting lug provides a stable and standardized connection point for the boom, making the connection between the boom and the lifting equipment more reliable and convenient.

[0020] In some embodiments, there are four lifting rods and four connecting rods, with the four connecting rods connected end to end, and the lifting rods installed at the joints of every two connecting rods. This technical solution can form a stable frame system, with the four connecting rods and the lifting rods working together to evenly distribute the weight of the precast blocks, improving the overall load-bearing capacity and stability of the lifting equipment.

[0021] Based on the above solution, the lifting device for hoisting precast blocks in this embodiment of the invention features a rotating block at the lower part of the lifting rod, allowing the lifting rod to be firmly engaged in the lifting hole of the precast block. This ensures that the precast block can be lifted more quickly and without shifting during hoisting and placement. Simultaneously, the adjustable mechanism allows for quick switching between the open and retracted states of the rotating block, enabling rapid completion of lifting, positioning, and installation operations for the precast blocks, significantly improving hoisting efficiency. Furthermore, the lifting device in this embodiment has a simple structure and is easy to operate, requiring no complex adjustment or monitoring equipment, reducing the skill requirements for operators and effectively lowering construction costs. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 This is a perspective view of the rotating block in the lifting device for hoisting precast blocks of this utility model when it is open;

[0024] Figure 2 This is a perspective view of the rotating block in the lifting device used for hoisting precast blocks of this utility model when it is retracted.

[0025] Figure 3 This is a side view of the lifting device of this utility model used for hoisting prefabricated blocks;

[0026] Figure 4 for Figure 3 A sectional view along line AA.

[0027] Figure 5 This is a schematic diagram of the structure of a lifting device used for lifting precast blocks in a utility model.

[0028] In the picture:

[0029] 1. Lifting rod; 101. Lifting lug; 2. Connecting rod; 3. Rotating block; 301. Fixed shaft; 4. Driver; 5. Swing rod; 6. Support leg; 7. Precast block; 701. Lifting hole; 702. Pad block. Detailed Implementation

[0030] The technical solutions in the embodiments of this utility model 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 this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 utility model.

[0032] In the description of this utility model, 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] like Figures 1-5 As shown, in one embodiment of the lifting device for hoisting precast blocks according to this utility model, the lifting device includes a lifting rod 1, a connecting rod 2, a rotating block 3, and an adjusting component; wherein, at least one lifting rod 1 is provided, the top of the lifting rod 1 is used to connect to a first lifting hook, and the lower part of the lifting rod 1 is used to extend into the lifting hole 701 inside the precast block 7 to lift the precast block 7; the connecting rod 2 is installed between adjacent lifting rods 1 for connecting the lifting rods 1; a through hole is opened at the lower part of the lifting rod 1, and the rotating block 3 is installed in the through hole and rotatably connected to the lifting rod 1; the rotating block 3 includes an open state and a retracted state, such as... Figure 1As shown, when the rotating block 3 is in the retracted state, the lifting rod 1 can extend into the lifting hole 701; as Figure 2 As shown, 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 the adjusting component is set inside the lifting rod 1 and connected to the rotating block 3 to adjust the state of the rotating block 3.

[0034] In the above illustrative embodiment, the lifting device for hoisting the precast blocks utilizes a rotating block 3 at the lower part of the lifting rod 1. This allows the lifting rod 1 to be securely engaged within the lifting hole 701 of the precast block 7, ensuring that the precast block 7 can be lifted more quickly and without shifting during hoisting and placement. Simultaneously, the adjustable mechanism allows for rapid switching between the open and retracted states of the rotating block 3, enabling quick completion of the lifting, positioning, and installation of the precast block 7, significantly improving hoisting efficiency. Furthermore, the lifting device in this embodiment has a simple structure and is easy to operate, requiring no complex adjustment or monitoring equipment, reducing the skill requirements for operators and effectively lowering construction costs.

[0035] In some embodiments, such as Figure 3 As shown, the adjusting component includes a driver 4 and a swing arm 5. The driver 4 is fixed inside the boom 1. One end of the swing arm 5 is hinged to the driver 4, and the other end is connected to the rotating block 3. The driver 4 drives the swing arm 5 to rotate around the hinge point, thereby rotating the rotating block 3 to retract or extend it. By driving the swing arm 5 to rotate around the hinge point, the driver 4 can precisely rotate the rotating block 3, realizing the conversion between its retracted and extended states. Compared with other possible adjustment methods, this design based on the driver 4 and the swing arm 5 makes the state adjustment of the rotating block 3 more flexible and efficient. Operators can precisely control the movement of the rotating block 3 according to actual lifting needs, thereby improving the accuracy and reliability of the connection and separation operations between the lifting equipment and the precast block 7 during the lifting process, and ensuring the safe and smooth progress of the lifting operation.

[0036] Furthermore, the driving component includes a hydraulic cylinder, and the rocker arm 5 is connected to the hinge point of the hydraulic cylinder.

[0037] In some embodiments, such as Figure 4 As shown, a fixed shaft 301 for fixing the rotating block 3 is provided inside the through hole, and the rotating block 3 is rotatably connected to the fixed shaft 301. The fixed shaft 301 provides a stable and reliable structural foundation for the installation and rotation of the rotating block 3, while limiting the rotation path and position of the rotating block 3. This ensures that the rotating block 3 can accurately and stably switch between open and retracted states within the through hole of the rod 1, avoiding instability such as shaking or offset during the movement of the rotating block 3, and improving the accuracy and reliability of the rotating block 3's operation.

[0038] In some embodiments, such as Figure 5 As shown, a pad 702 is also provided in the lifting hole 701 inside the precast block 7. When the rotating block 3 is in the open state, the rotating block 3 and the pad 702 are in contact. By setting the pad 702, the friction and support area of ​​the contact part between the rotating block 3 and the precast block 7 are increased. During the lifting process, the weight of the precast block 7 can be better distributed, reducing the local stress concentration between the rotating block 3 and the lifting hole 701, reducing the risk of damage to the rotating block 3 or the lifting hole 701, thereby ensuring the safety and reliability of the precast block 7 lifting process, helping to extend the service life of the lifting equipment and the precast block 7, and ensuring the smooth progress of the precast block 7 lifting operation during the construction of gravity block wharves or dams.

[0039] In some embodiments, such as Figure 4 As shown, a support leg 6 is provided below the connecting rod 2 to limit the depth of the lifting rod 1 inside the precast block 7. The support leg 6 is set parallel to the lifting rod 1. When the lifting rod 1 is inserted into the lifting hole 701 inside the precast block 7, the bottom of the support leg 6 abuts against the surface of the precast block 7. By setting the support leg 6, the insertion depth of the lifting rod 1 can be precisely limited, avoiding safety accidents such as tilting or falling off of the precast block 7 due to improper insertion depth of the lifting rod 1. Moreover, it helps to ensure the consistency of the installation position of the precast block 7 during the construction of gravity block wharves or dams, thus improving the quality of the entire project.

[0040] In some embodiments, such as Figure 5 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. Through the design of the lifting hole 701's diameter, combined with the working principle of the lifting device, the upper diameter of the lifting hole 701 allows the lifting rod 1 to smoothly extend into the lifting hole 701, and the rotating block 3 can also pass smoothly when retracted. The lower diameter of the lifting hole 701, being larger than the length of the rotating block 3, ensures that the rotating block 3 can be stably locked within the lifting hole 701 when open, providing reliable support for lifting the precast block 7. This satisfies the needs of different stages during the lifting operation and ensures the stability of the connection between the rotating block 3 and the lifting hole 701.

[0041] In some embodiments, such as Figure 4 As shown, the top of the boom 1 is provided with a lifting lug 101 for connecting to the lifting equipment. The lifting lug 101 provides a stable and standardized connection point for the boom 1, making the connection between the boom 1 and the lifting equipment more reliable and convenient.

[0042] In some embodiments, such as Figure 1As shown, there are four lifting rods 1 and four connecting rods 2. The four connecting rods 2 are connected end to end, and the lifting rods 1 are installed at the joints of every two connecting rods 2. Through the installation of the four lifting rods 1 and connecting rods 2, a stable frame system is formed. The four connecting rods 2 and the lifting rods 1 cooperate with each other to evenly distribute the weight of the precast block 7, improving the overall load-bearing capacity and stability of the lifting equipment. Furthermore, this regular structural layout can better resist external interference, maintain the balance of the precast block 7, and reduce the swaying or tilting of the precast block 7 caused by uneven force, thereby improving the safety and accuracy of the lifting operation, while also facilitating installation, debugging and maintenance.

[0043] The following describes a lifting method for an embodiment of the lifting device of this utility model for lifting precast blocks, including the following steps:

[0044] S1, adjust the rotating block 3 to the retracted state using the adjusting component, connect the top of the boom 1 to the first lifting hook, lift the first lifting hook, and control the boom 1 to enter the lifting hole 701 of the precast block 7;

[0045] S2, using the adjusting component to switch the rotating block 3 to the open state, lift the first lifting hook so that the rotating block 3 is locked in the lifting hole 701, and the lifting rod 1 drives the precast block 7 to be lifted to the preset position;

[0046] S3, lower the first lifting hook, use the adjusting component to switch the rotating block 3 to the retracted state, and raise the first lifting hook again so that the lifting rod 1 leaves the lifting hole 701.

[0047] In some embodiments, the method of adjusting the state of the rotating block 3 using the adjusting member includes: using the driver 4 to drive the rocker arm 5 to rotate, thereby rotating the rotating block 3 to retract or extend the rotating block 3.

[0048] Through the description of several embodiments of the lifting device for hoisting precast blocks according to the present invention, it can be seen that the embodiments of the lifting device for hoisting precast blocks according to the present invention have at least one or more of the following advantages:

[0049] 1. The lifting device for hoisting precast blocks provided by this utility model, by setting a rotating block 3 at the lower part of the lifting rod 1, allows the lifting rod 1 to be firmly locked in the lifting hole 701 of the precast block 7, ensuring that the precast block 7 can be lifted more quickly and that no displacement will occur during the hoisting and placement process;

[0050] 2. The lifting device for hoisting precast blocks provided by this utility model can quickly switch the rotating block 3 between the open and retracted states by setting the adjustment component, thereby quickly completing the lifting, positioning and installation of precast blocks 7, and greatly improving the hoisting efficiency of precast blocks 7.

[0051] 3. The lifting device for hoisting precast blocks provided by this utility model has a simple structure and is easy to operate. It does not require complex adjustment and monitoring equipment, which reduces the technical requirements for operators and can effectively reduce construction costs.

[0052] 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.

[0053] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model 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 this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A sling for hoisting precast blocks, characterised in that, include: A lifting rod is provided, at least one lifting rod is provided, the top of the lifting rod is used to connect the first lifting hook, and the lower part 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 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. The adjusting component is hollow inside the boom and is connected to the rotating block to adjust the state of the rotating block.

2. The sling for hoisting precast blocks according to claim 1, characterized in that, The adjusting component includes a driver and a rocker arm. The driver is fixed inside the boom. One end of the rocker arm is hinged to the driver, and the other end is connected to the rotating block. The driver is used to drive the rocker arm to rotate around the hinge point, thereby rotating the rotating block to raise or lower it.

3. A sling for lifting precast blocks according to claim 2, characterised in that, The driving component includes a hydraulic cylinder, and the rocker arm is connected to the hinge point of the hydraulic cylinder.

4. The sling for hoisting precast blocks 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.

5. The sling for hoisting precast blocks according to claim 1, characterized in that, The precast blocks are equipped with pads in the lifting holes inside, and when the rotating block is in the open state, the rotating block fits into the pad.

6. The sling for hoisting precast blocks according to claim 1, characterized in that, Below the connecting rod is a support leg for limiting the depth of the rod's insertion into the precast block. The support leg is set parallel to the rod, and when the rod is inserted into the lifting hole inside the precast block, the bottom of the support leg abuts against the surface of the precast block.

7. The lifting device for hoisting precast blocks according to claim 1, characterized in that, 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, while the lower diameter is larger than the length of the rotating block.

8. The sling for hoisting precast blocks according to claim 1, characterized in that, The top of the boom is equipped with lugs for connecting lifting equipment.

9. The sling for hoisting precast blocks according to claim 1, characterized in that, There are four rods and four connecting rods. The four connecting rods are connected end to end, and the rods are installed at the joints of every two connecting rods.

Images