Beam type lifting appliance for lifting prefabricated square block
By designing a beam-type lifting device, utilizing the diagonal position of the hydraulic pin shaft and multiple sets of lifting lugs, the problem of existing lifting devices being unable to adapt to precast blocks of different sizes was solved, achieving efficient, accurate, and safe lifting of precast blocks and reducing construction costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NO 2 ENG CO LTD OF CCCC FIRST HARBOR ENG
- Filing Date
- 2025-05-29
- Publication Date
- 2026-05-05
AI Technical Summary
Existing hoisting equipment is difficult to adapt to prefabricated blocks of different sizes and lacks automatic unhooking function, which affects the accuracy and efficiency of the hoisting process.
A beam-type lifting device was designed, including a main beam, a secondary beam, lifting straps, lifting lugs, and hydraulic pins. Automatic unhooking is achieved by setting the hydraulic pins at diagonal positions, and the adaptability to precast blocks of different sizes is improved by using at least two sets of lifting lugs.
It enables efficient, accurate, and safe hoisting of prefabricated blocks, reduces construction costs, improves construction quality, and simplifies the operation process.
Smart Images
Figure CN224198997U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of sling-type lifting tools, and particularly relates to a beam-type lifting tool for lifting precast blocks. Background Technology
[0002] Gravity-type block wharves or breakwaters are walls formed by a certain number of precast solid or hollow concrete blocks constructed using a specific masonry method. During the construction of a gravity-type wharf, the blocks need to be accurately placed in designated locations to ensure the structural stability and durability of the wharf; therefore, the hoisting of the blocks is crucial.
[0003] Traditionally, the lifting process for prefabricated blocks involves using a floating crane vessel connected to a lifting device for hoisting, positioning, and installation. The automatic unhooking technology of this lifting device greatly facilitates the lifting process. However, current technology does not offer a lifting device suitable for lifting prefabricated blocks on gravity-type wharves that can achieve automatic unhooking. Furthermore, existing lifting devices are not size-compatible with the prefabricated blocks, making it difficult for the same device to accommodate blocks of different sizes.
[0004] Therefore, how to provide hoisting equipment for lifting prefabricated blocks of different sizes is a technical problem that urgently needs to be solved. Utility Model Content
[0005] To address the shortcomings of existing technologies, this utility model provides a beam-type lifting device for hoisting precast blocks, which can improve the adaptability of the lifting device to precast blocks of different sizes by using at least two sets of lifting lugs.
[0006] This utility model provides a beam-type lifting device for hoisting precast blocks, comprising:
[0007] The beam frame is detachably connected to the hook of the lifting equipment. The beam frame includes main beams and secondary beams, with the secondary beams installed vertically between the two main beams.
[0008] The slings, which are suspended below the main beam, are used to connect the precast blocks;
[0009] Lifting lugs: At least two pairs of lifting lugs are provided at each end of the main beam. The lifting lugs located at one pair of diagonal positions of the main beam are equipped with crossbars, and the lifting lugs located at the other pair of diagonal positions of the main beam are equipped with hydraulic pins. Both the crossbars and the hydraulic pins are used to suspend the slings, and the hydraulic pins are also used to detach the slings.
[0010] This technical solution enables automatic unhooking at a limited cost by setting the hydraulic pins at diagonal positions; at least two sets of lifting lugs can improve the adaptability of the lifting device to precast blocks of different sizes.
[0011] In some embodiments, a fixing component is provided below the main beam for securing the hydraulic pin. This technical solution ensures the stable fixation of the hydraulic pin below the main beam through the installation of the fixing component.
[0012] In some embodiments, the hydraulic pin includes:
[0013] Hydraulic cylinder, which is fixedly connected to a stationary component;
[0014] The piston rod is located inside the hydraulic cylinder and is slidably connected to the hydraulic cylinder;
[0015] The insertion and removal pin, sleeved on the end of the piston rod away from the hydraulic cylinder, is used to suspend or detach from the sling. In this technical solution, the hydraulic pin, through the cooperation of the hydraulic cylinder and the piston rod, enables automatic operation of the insertion and removal pin, thus facilitating the automatic unhooking of the precast blocks.
[0016] In some embodiments, the hydraulic pin is further provided with a cylinder nut, which is installed at the connection between the insert pin and the piston rod. This technical solution reduces the swaying and displacement of the insert pin during hydraulic operation by providing the cylinder nut.
[0017] In some embodiments, the beam-type lifting device for hoisting precast blocks also includes a traction device, which is installed at the hydraulic pins below the two main beams to pull the slings. This technical solution, through the use of traction devices, can effectively pull the slings, ensuring that the slings remain stable and controlled during the hoisting process.
[0018] In some embodiments, the sling is equipped with a hook at one end. When hoisting the precast block, one end of the sling is fixed to a crossbar, and the other end is first connected to a traction device with a hook. After the traction device pulls the sling around the bottom of the precast block and lifts it up, the hook is detached from the traction device and suspended on a hydraulic pin. This technical solution, through the setting of the hook, makes it easier to fix and suspend the precast block with the sling.
[0019] In some embodiments, the prefabricated blocks are equipped with lifting slots to facilitate lifting by slings. This technical solution, through the installation of lifting slots, reduces the risk of sling slippage or displacement, making the lifting process more stable and reliable.
[0020] In some embodiments, the spacing of the lifting lugs on the same main beam of the lifting slot matches the spacing between the lifting slots on the precast blocks.
[0021] In some embodiments, the beam-type lifting device for hoisting precast blocks further includes slings, one end of which is connected to the beam frame and the other end to the hook of the lifting equipment. This technical solution, through the use of slings, allows the beam-type lifting device to connect to the lifting equipment more flexibly.
[0022] Based on the above solution, the beam-type lifting device for hoisting precast blocks in this embodiment of the present invention achieves rapid positioning and hoisting of precast blocks through the arrangement of beams, slings, and lifting lugs; the beams are detachably connected to the hooks of the lifting equipment, allowing the lifting device to be flexibly used with different lifting equipment; the combination of main beams and secondary beams enhances the stability and load-bearing capacity of the lifting device, ensuring safety during the hoisting process; the slings, suspended below the main beams, are used to connect the precast blocks, making the hoisting process more stable, reducing the swaying of the blocks during hoisting, and improving the accuracy of hoisting; furthermore, by setting the hydraulic pins at diagonal positions, automatic unhooking can be achieved at a limited cost; at least two sets of lifting lugs can improve the adaptability of the lifting device to precast blocks of different sizes. In summary, the beam-type lifting device for hoisting precast blocks in this embodiment can reduce construction costs while improving construction quality, achieving efficient, accurate, and safe hoisting of precast blocks, and providing a simple and efficient technical solution for the hoisting of precast blocks. Attached Figure Description
[0023] 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:
[0024] Figure 1 This is a state diagram of the lifting process of the beam-type lifting device used for lifting prefabricated blocks in an embodiment of this utility model;
[0025] Figure 2 This is a diagram showing the unhooking state of the beam-type lifting device used for hoisting prefabricated blocks in an embodiment of this utility model.
[0026] Figure 3 This is a side view of the main beam of the beam-type lifting device used for hoisting precast blocks in an embodiment of this utility model;
[0027] Figure 4 This is a schematic diagram of the hydraulic pin shaft of the beam-type lifting device used for hoisting precast blocks in an embodiment of this utility model.
[0028] In the picture:
[0029] 1. Beam frame; 2. Lifting straps; 3. Lifting lugs; 4. Precast blocks; 5. Lifting cables; 6. Traction device;
[0030] 101. Main beam; 102. Secondary beam;
[0031] 201. Lifting hook;
[0032] 31. Crossbar; 32. Hydraulic pin; 321. Insert pin; 322. Piston rod; 323. Hydraulic cylinder; 324. Cylinder nut; 33. Fixing component;
[0033] 401. Lifting slot. Detailed Implementation
[0034] 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.
[0035] 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.
[0036] 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.
[0037] like Figures 1-4 As shown, in one embodiment of the beam-type lifting device for hoisting precast blocks according to this utility model, the beam-type lifting device for hoisting precast blocks includes a beam frame 1, a lifting strap 2, and lifting lugs 3; wherein, the beam frame 1 is detachably connected to the hook 201 of the lifting equipment, the beam frame 1 includes a main beam 101 and a secondary beam 102, the secondary beam 102 being vertically installed between the two main beams 101; the lifting strap 2 is suspended below the main beams 101 and is used to connect the precast blocks 4; at least two pairs of lifting lugs 3 are provided at each end below the main beams 101, one pair of lifting lugs 3 located at opposite corners of the main beams 101 is provided with a crossbar 31, and the other pair of lifting lugs 3 located at opposite corners of the main beams 101 is provided with a hydraulic pin 32; both the crossbar 31 and the hydraulic pin 32 are used to suspend the lifting strap 2, and the hydraulic pin 32 is also used to detach from the lifting strap 2.
[0038] In the above illustrative embodiment, the beam-type lifting device for hoisting precast blocks achieves rapid positioning and hoisting of precast blocks 4 through the arrangement of beam frame 1, lifting straps 2, and lifting lugs 3; the beam frame 1 is detachably connected to the hook 201 of the lifting equipment, allowing the lifting device to be flexibly used with different lifting equipment; the combination of the main beam 101 and the secondary beam 102 enhances the stability and load-bearing capacity of the lifting device, ensuring safety during the hoisting process; the lifting straps 2 are suspended below the main beam 101 and are used to connect the precast blocks 4, making the hoisting process more stable, reducing the swaying of the blocks during hoisting, and improving the accuracy of hoisting; furthermore, by setting the hydraulic pins 32 at diagonal positions, automatic unhooking can be achieved at a limited cost; at least two sets of lifting lugs 3 can improve the adaptability of the lifting device to precast blocks 4 of different sizes. In summary, the beam-type lifting device used for hoisting precast blocks in this embodiment can reduce construction costs and improve construction quality, achieving efficient, accurate, and safe hoisting of precast blocks 4, and providing a simple and efficient technical solution for hoisting precast blocks 4.
[0039] In some embodiments, such as Figure 3 As shown, a fixing member 33 for fixing the hydraulic pin 32 is provided below the main beam 101. The fixing member 33 ensures the stable fixing of the hydraulic pin 32 below the main beam 101, thereby providing a more reliable connection during hoisting.
[0040] Furthermore, such as Figure 4 As shown, the hydraulic pin 32 includes a hydraulic cylinder 323, a piston rod 322, and a pull-out pin 321. The hydraulic cylinder 323 is fixedly connected to the fixing member 33. The piston rod 322 is disposed within the hydraulic cylinder 323 and slidably connected to it. The pull-out pin 321 is sleeved on the end of the piston rod 322 away from the hydraulic cylinder 323, and is used to suspend or detach the sling 2. Through the cooperation of the hydraulic cylinder 323 and the piston rod 322, the hydraulic pin 32 enables the automatic operation of the pull-out pin 321, achieving automatic unhooking of the precast blocks 4 and reducing the complexity and labor intensity of manual operation.
[0041] In some embodiments, such as Figure 4 As shown, the hydraulic pin 32 is also equipped with a cylinder nut 324, which is installed at the connection between the insertion pin 321 and the piston rod 322. The cylinder nut 324 reduces the swaying and displacement of the insertion pin 321 during hydraulic operation, thereby reducing the risk of operational errors and further improving the safety of the hoisting process.
[0042] In some embodiments, such as Figure 1As shown, the beam-type lifting device used for hoisting precast blocks also includes a traction device 6. The traction device 6 is installed at the hydraulic pins 32 below the two main beams 101 and is used to pull the sling 2. By setting up the traction device 6, the sling 2 can be effectively pulled, ensuring that the sling 2 remains stable and controlled during the hoisting process, reducing the risk of slippage or displacement of the sling 2, thereby improving the safety and accuracy of the hoisting.
[0043] As an illustrative embodiment, the traction device 6 can be a hand-operated hoist.
[0044] In some embodiments, such as Figure 2 As shown, the lifting sling 2 is equipped with a hook 201 at one end. When lifting the precast block 4, one end of the lifting sling 2 is fixed to the crossbar 31, and the other end is first connected to the traction device 6 with the hook 201. After the traction device 6 pulls the lifting sling 2 around the precast block 4 and lifts it up, the hook 201 is detached from the traction device 6 and suspended on the hydraulic pin 32. The hook 201 makes it easier to fix and suspend the precast block 4, ensuring stability and safety during the lifting process, while simplifying the operation steps and improving the lifting efficiency.
[0045] In some embodiments, such as Figure 1 As shown, the precast block 4 is equipped with a lifting groove 401 to facilitate the lifting of the sling 2 from the bottom. The lifting groove 401 reduces the risk of slippage or displacement of the sling 2, making the lifting process more stable and reliable.
[0046] In some embodiments, the spacing of the lifting lugs 3 on the same main beam 101 of the lifting slot 401 matches the spacing between the lifting slots 401 on the precast blocks 4.
[0047] In some embodiments, such as Figure 1 As shown, the beam-type lifting device used for hoisting precast blocks also includes a sling 5, one end of which is connected to the beam frame 1, and the other end is connected to the hook 201 of the lifting equipment. The sling 5 allows the beam-type lifting device to connect to the lifting equipment more flexibly.
[0048] The following describes the lifting process of the beam-type lifting device for lifting precast blocks according to this utility model:
[0049] S1. Select a lifting lug 3 that matches the size of the precast block 4. Fix one end of the lifting strap 2 to the crossbar 31 of the lifting lug 3. After the other end is lifted by the traction device 6, the hook 201 of the lifting strap 2 is lifted around the bottom of the precast block 4. Then, the hook 201 is disengaged from the traction device 6 and the hook 201 is suspended on the hydraulic pin 32.
[0050] S2. Hoist the precast block 4 to the required position, control the hydraulic pin 32 to disengage from the lifting lug 3, and the sling 2 will automatically unhook.
[0051] It should be noted that in step S1, after the sling 2 is suspended from the hydraulic pin 32, the piston rod 322 of the hydraulic pin 32 remains extended so that the sling 2 is suspended from the insertion pin 321; in step S2, when the hydraulic pin 32 is disengaged from the lug 3, the piston rod 322 of the hydraulic pin 32 is retracted and the insertion pin 321 is disengaged from the lug 3 so that the sling 2 is disengaged from the insertion pin 321.
[0052] Through the description of several embodiments of the beam-type lifting device for hoisting precast blocks according to this utility model, it can be seen that the embodiments of the beam-type lifting device for hoisting precast blocks according to this utility model have at least one or more of the following advantages:
[0053] 1. The beam-type lifting device for hoisting precast blocks provided by this utility model can achieve automatic unhooking at a limited cost by setting the hydraulic pin 32 at a diagonal position;
[0054] 2. The beam-type lifting device for hoisting precast blocks provided by this utility model can improve the adaptability of the lifting device to precast blocks 4 of different sizes by using at least two sets of lifting lugs 3;
[0055] 3. The beam-type lifting device for hoisting precast blocks provided by this utility model can reduce construction costs and improve construction quality, achieving efficient, accurate and safe hoisting of precast blocks 4.
[0056] 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.
[0057] 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 beam-type lifting device for hoisting precast blocks, characterized in that, include: The beam frame is detachably connected to the hook of the lifting equipment. The beam frame includes main beams and secondary beams, with the secondary beams installed vertically between the two main beams. The slings, which are suspended below the main beam, are used to connect the precast blocks; Lifting lugs: At least two pairs of lifting lugs are provided at each end of the main beam. The lifting lugs located at one pair of diagonal positions of the main beam are equipped with crossbars, and the lifting lugs located at the other pair of diagonal positions of the main beam are equipped with hydraulic pins. Both the crossbars and the hydraulic pins are used to suspend the slings, and the hydraulic pins are also used to detach the slings.
2. The beam-type lifting device for hoisting precast blocks according to claim 1, characterized in that, A fastener is provided below the main beam for fixing the hydraulic pin.
3. The beam-type lifting device for hoisting precast blocks according to claim 2, characterized in that, Hydraulic pins include: Hydraulic cylinder, which is fixedly connected to a stationary component; The piston rod is located inside the hydraulic cylinder and is slidably connected to the hydraulic cylinder; A pull pin, which is fitted onto the end of the piston rod away from the hydraulic cylinder, is used to suspend or detach the sling.
4. The beam-type lifting device for hoisting precast blocks according to claim 1, characterized in that, The hydraulic pin is also equipped with a cylinder nut, which is installed at the connection between the insert pin and the piston rod.
5. The beam-type lifting device for hoisting precast blocks according to claim 1, characterized in that, It also includes a traction device, which is installed at the hydraulic pins under the two main beams and is used to pull the sling.
6. The beam-type lifting device for hoisting precast blocks according to claim 5, characterized in that, The sling is equipped with a hook at one end. When hoisting the precast blocks, one end of the sling is fixed to the crossbar, and the other end is first connected to the traction device. After the traction device pulls the sling around the bottom of the precast block and lifts it up, the hook is detached from the traction device and suspended on the hydraulic pin.
7. The beam-type lifting device for hoisting precast blocks according to claim 1, characterized in that, The precast blocks are equipped with lifting slots that facilitate lifting by slings.
8. The beam-type lifting device for hoisting precast blocks according to claim 7, characterized in that, The spacing of the lifting lugs on the same main beam of the hoisting slot matches the spacing between the hoisting slots on the precast blocks.
9. The beam-type lifting device for hoisting precast blocks according to claim 1, characterized in that, It also includes slings, one end of which is connected to the beam frame and the other end to the hook of the lifting equipment.