Lifting appliance for lifting prefabricated part

Abstract

The utility model provides a prefabricated part lifting appliance which comprises a base and a plurality of lifting rods, and the base is provided with a limiting seat and a limiting groove surrounding the limiting seat; one end of the limiting seat protrudes out of the limiting groove and is provided with a lifting lug; one end of the hanging rod extends into the limiting groove and is rotatably connected with the base, and the other end of the hanging rod can be folded inwards or unfolded outwards by controlling the hanging rod to rotate. The lifting device is simple in overall structure and convenient to operate, the plane of the prefabricated part is fixed through the multiple lifting rods, the number of lifting holes needing to be formed in the prefabricated part is reduced, and the strength and integrity of the prefabricated part can be improved easily; and the overall safety is higher, the hoisting posture of the prefabricated part can be adjusted more conveniently, and the hoisting efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting technology, and in particular relates to a hoisting tool for prefabricated components. Background Technology

[0002] Prefabricated components are widely used in prefabricated buildings. These components are manufactured in factories and then transported to the construction site, where they are moved to the designated location by hoisting equipment for assembly and installation. Currently, the main hoisting method involves creating multiple pre-drilled lifting holes in the prefabricated components and connecting them with steel wire ropes to prevent swaying during hoisting. Typically, to ensure safety and stability, each steel wire rope needs to pass through two lifting holes, but this increases the number of pre-drilled holes required for the prefabricated components, thus affecting the strength of the components themselves to some extent. Especially for prefabricated components with special shapes or functional requirements, the location and number of lifting holes are often limited, making conventional hoisting methods insufficient for stable hoisting. Furthermore, this hoisting method is not only cumbersome to operate but also difficult to control the hoisting posture of the prefabricated components, requiring a high level of technical skill from the operators, which limits the overall hoisting efficiency. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a precast component hoisting tool, which reduces the number of hoisting holes that need to be opened for precast components, and can complete the hoisting of precast components more conveniently and efficiently.

[0004] The technical solution adopted by this utility model is: a precast component hoisting tool, including a base and multiple lifting rods. The base is provided with a limiting seat and a limiting groove surrounding the limiting seat. One end of the limiting seat protrudes from the limiting groove and is provided with a lifting lug. One end of the lifting rod extends into the limiting groove and is rotatably connected to the base. Controlling the rotation of the lifting rod can cause its other end to retract inward or open outward, so that the lifting rod is located inside the base or extends outside the base.

[0005] Furthermore, at least three of the aforementioned booms are of equal length and are evenly arranged along the circumference of the limiting groove.

[0006] Furthermore, the inner wall of the limiting groove is inclined from the outside to the inside so that the hanging rod fits against the inner wall after the opening is opened.

[0007] Furthermore, the limiting seat includes a cylindrical groove adapted to the shape of the boom, the cylindrical groove being arranged along the axial direction of the limiting seat and extending to the bottom of the limiting groove.

[0008] Furthermore, the boom is mounted on the bottom of the limiting groove or the bottom of the cylindrical groove via a hinge support.

[0009] Further, the limiting seat is further provided with a driving assembly connected to the suspender for driving the suspender to fold or unfold.

[0010] Further, the driving assembly comprises a driver and a push rod arranged at the driving end of the driver, the push rod is arranged along the radial direction of the limiting groove, and the other end of the push rod is provided with a sliding part, and the suspender is provided with a sliding groove along the length direction of the suspender on the side of the suspender facing the limiting seat, and the sliding part is slidably connected to the sliding groove.

[0011] Further, the sliding part is provided with a smooth arc surface, and the sliding groove is provided with a baffle edge matched with the sliding part.

[0012] Further, the end of the base opposite to the limiting seat is a hemispherical structure, and the outer side of the hemispherical structure is covered with a flexible pad.

[0013] The utility model has the advantages and positive effects that:

[0014] (1) the prefabricated component hoisting sling in the application has simple overall structure and is convenient to operate, a plurality of suspenders are adopted to fix the plane of the prefabricated component, compared with the traditional method, the number of lifting holes needed to be opened in the prefabricated component is reduced, the strength and integrity of the prefabricated component are improved, and the functional requirements of different prefabricated components are met.

[0015] (2) the overall safety is higher, each prefabricated component hoisting sling can realize multi-point contact with the prefabricated component through the suspender, more effective and balanced support is formed on the prefabricated component, and the stability and safety of hoisting operation are improved.

[0016] (3) the hoisting posture of the prefabricated component is more convenient to adjust, the length of the steel strand connected to the prefabricated component hoisting sling is only adjusted in the whole hoisting process, so that the prefabricated component can be kept in the set hoisting posture, and the posture of the prefabricated component is also convenient to adjust, which not only simplifies the operation process and meets the requirements of different prefabricated component hoisting postures, but also improves the hoisting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the structure schematic view of one specific embodiment of the utility model;

[0018] Figure 2 is the top view of one specific embodiment of the utility model;

[0019] Figure 3 is the suspender folding schematic view of one specific embodiment of the utility model;

[0020] Figure 4 is the suspender unfolding schematic view of one specific embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram illustrating the use of a specific embodiment of this utility model.

[0022] In the picture:

[0023] 1. Base; 11. Limiting seat; 111. Columnar groove; 12. Limiting groove; 13. Flexible pad; 2. Hanging rod; 21. Slide groove; 3. Hinge support; 4. Lifting lug; 5. Drive assembly; 51. Driver; 52. Push rod; 521. Sliding part; 6. Precast component. Detailed Implementation

[0024] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0025] like Figures 1 to 4 As shown in the figure, this utility model embodiment proposes a precast component hoisting tool, including a base 1 and multiple lifting rods 2. The base 1 is provided with a limiting seat 11 and a limiting groove 12 surrounding the limiting seat 11. One end of the limiting seat 11 protrudes from the limiting groove 12 and is provided with a lifting lug 4 for connecting hoisting equipment. One end of the lifting rod 2 extends into the limiting groove 12 and is rotatably connected to the base 1. Controlling the rotation of the lifting rod 2 can cause its other end to retract inward or open outward, so that the lifting rod 2 is located inside the base 1 or extends outward from the base 1.

[0026] It should be noted that in this embodiment, the lifting lug 4 is used to connect the steel strand of the hoisting equipment. In the hoisting state, the lifting lug 4 generally faces upward. Therefore, the end face where the lifting lug 4 is located is the upper end of the limiting seat 11, the direction close to the limiting seat 11 is inward, and the direction away from the limiting seat 11 is outward. This is used as a reference for the description.

[0027] In this embodiment, multiple lifting rods 2 are rotatably connected to the base 1, and the lifting rods 2 are controlled to switch between a retracted state and an open state, so that the base 1 and the lifting rods 2 can fix a plane of the precast component 6. Specifically, the lifting equipment is connected to the lifting lugs 4 on the limiting seat 11, and the lifting rods 2 are controlled to retract inward, so that the base 1 and the lifting rods 2 can pass through the lifting hole into the precast component 6 together. Then, the lifting rods 2 are controlled to open outward, so that the lifting rods 2 contact the plane of the precast component 6 around the lifting hole. Under the pulling force of the lifting equipment, the lifting rods 2 press against the precast component 6. The prefabricated component 6 achieves a stable connection between the lifting device and the prefabricated component 6, ensuring smooth lifting operations. Compared to the traditional lifting method of directly passing steel strands through the two lifting holes on the prefabricated component 6, this reduces the number of lifting holes that need to be reserved on the prefabricated component 6 and facilitates connection with lifting equipment. Since the lifting rod 2 can directly fix the plane of the prefabricated component 6, the lifting posture of the prefabricated component 6 can be adjusted more conveniently by adjusting the length of the steel strands connected to the lifting lug 4, so that the posture of the prefabricated component 6 meets the assembly and installation requirements.

[0028] likeFigure 1 , Figure 2 As shown, in this embodiment, both the limiting seat 11 and the limiting groove 12 are used to limit the lifting rod 2 to control its rotation angle. The limiting groove 12 is annular with its opening facing upward and is coaxially arranged with the center of the base 1 and the limiting seat 11. The limiting groove 12 has a set opening width and depth to accommodate the rotation of the lifting rod 2. One end of the limiting seat 11 protrudes from the limiting groove 12 at a set height to achieve its function of limiting the lifting rod 2. When the boom 2 opens outward, the side wall of the limiting groove 12 supports the boom 2, so that the boom 2 has a set tilt angle relative to the axial direction of the base 1, so that it can abut against the plane of the prefabricated component 6. The tilt angle is less than 90 degrees, so that the end of the boom 2 is set close to the lifting lug 4, and the prefabricated component 6 is controlled above the lifting device. When the boom 2 retracts inward, the side wall of the limiting seat 11 limits the boom 2, so that the boom 2 has a set retracted posture, which facilitates the storage and installation of the lifting device.

[0029] It should be noted that the shapes of the base 1 and the limiting seat 11 in this application can be set as needed and are not limited here; preferably, the base 1 and the limiting seat 11 are both set as cylindrical structures so as to cooperate with the lifting holes on the prefabricated component 6 and reduce the processing difficulty; in a specific embodiment, the base 1, the limiting seat 11 and the limiting groove 12 are made by integral molding, which is simple to manufacture and has high processing accuracy.

[0030] Furthermore, such as Figure 1 , Figure 2 As shown, in this embodiment, at least three lifting rods 2 are of equal length and evenly arranged along the circumference of the limiting groove 12. This arrangement ensures that one end of each of the at least three lifting rods 2 is on the same plane, and that all three lifting rods 2 can contact the same plane of the precast component 6 when it is opened, thus providing uniform and effective support for the precast component 6. This design utilizes the principle that a plane can be fixed by three points, which can prevent the precast component 6 from tilting laterally during hoisting, improving the stability and safety of the hoisting operation. The number of lifting rods 2 can be set as needed, as long as there are three or more. To simplify the structure, three are used as an example in this embodiment.

[0031] Furthermore, such as Figure 3 , Figure 4As shown, the inner wall of the limiting groove 12 is inclined radially so that the lifting rod 2 after opening fits against the inner wall. The inclination angle of the inner wall allows the lifting rod 2 to fit precisely against the inner wall after opening, so that the lifting rod 2 and the axial direction of the base 1 have a set inclination angle of less than 90 degrees. At the same time, there is sufficient contact area between the inner wall and the lifting rod 2, so that the interior can provide sufficient support for the lifting rod 2. While achieving a good limiting effect, it also improves the stability of the lifting rod 2. The equal length setting makes the end of the lifting rod 2 extending to the outside of the base 1 located on the same plane, and this plane is located above the lifting lug 4, so as to achieve unobstructed contact with the plane of the prefabricated component 6.

[0032] like Figure 1 As shown, the limiting seat 11 includes a cylindrical groove 111 adapted to the shape of the lifting rod 2. The cylindrical groove 111 is arranged along the axial direction of the limiting seat 11 and extends to the bottom of the limiting groove 12. The purpose of this arrangement is to form a space that can accommodate the lifting rod 2, so that the lifting rod 2 can be embedded in the cylindrical groove 111 when it is retracted, thereby limiting the retraction of the lifting rod 2 and ensuring that the lifting rod 2 can be stably fixed in the cylindrical groove 111 after retraction. This reduces the circumferential area of ​​the overall device, making it suitable for situations where the device needs to pass through the lifting hole. At the same time, it also protects the lifting rod 2 from damage.

[0033] In one alternative technical solution of this embodiment, the boom 2 is connected to the bottom of the limiting groove 12 by a hinge support 3. The hinge support 3 is set at a position corresponding to the cylindrical groove 111. The rotation shaft on the hinge support 3 passes through one end of the boom 2, so that when the boom 2 rotates around the rotation shaft, it is just embedded in the cylindrical groove 111 or abuts against the side wall of the limiting groove 12 away from the cylindrical groove 111.

[0034] In another alternative technical solution of this embodiment, the boom 2 is set at the bottom of the cylindrical groove 111 by the hinge support 3. The rotation axis of the hinge support 3 is set in the cylindrical groove 111. The rotation axis passes through one end of the boom 2, so that when the boom 2 rotates around the rotation axis, it is just embedded in the cylindrical groove 111 or abuts against the side wall of the limiting groove 12 away from the cylindrical groove 111.

[0035] Furthermore, in the embodiments of this application, such as Figure 3 , Figure 4As shown, the limiting seat 11 is also provided with a drive assembly 5. The drive end of the drive assembly 5 is connected to the lifting rod 2 and is used to drive the lifting rod 2 to retract or extend. The number of drive assemblies 5 is the same as the number of lifting rods 2, and they are set at the corresponding positions of the limiting seat 11 and the lifting rods 2. When the drive assembly 5 is running, it can push the lifting rod 2 to extend outward and abut against the inner wall of the limiting groove 12, or it can pull the lifting rod 2 to retract inward and embed into the cylindrical groove 111. By setting the drive assembly 5, the rotation direction and rotation angle of the lifting rod 2 can be precisely controlled to match the usage requirements of the lifting device. At the same time, it is beneficial to maintain the lifting rod 2 in the retracted or extended state, thereby improving the stability and safety of the lifting device.

[0036] In one specific embodiment, the drive assembly 5 includes a driver 51 and a push rod 52 disposed at the drive end of the driver 51. The push rod 52 is arranged radially along the limiting groove 12, and its other end is provided with a sliding part 521. The hanging rod 2 is provided with a sliding groove 21 along its length direction on the side facing the limiting seat 11, and the sliding part 521 is slidably connected in the sliding groove 21.

[0037] In the above embodiment, the lifting lug 4 is disposed on the upper end surface of the limiting seat 11, and the driver 51 is also disposed on the upper end surface of the limiting seat 11 and offset from the lifting lug 4. The push rod 52 is disposed radially along the limiting seat 11 and can move axially under the drive of the driver 51 to retract into the inner side of the limiting seat 11 or extend out of the outer side of the limiting seat 11. The driver 51 can be a cylinder drive, a gear drive, or any other drive device that can drive the push rod 52 axially, and there are no restrictions here. Preferably, a cylinder drive is used, and the driver 51 is pre-set with a drive stroke, which can drive the push rod 52 to move a set distance to drive the lifting rod 2 to retract inward and embed into the cylindrical groove 111 or to open outward and abut against the inner wall of the limiting groove 12.

[0038] In the above embodiment, the end of the push rod 52 away from the driver 51 is provided with a sliding part 521, and the side of the lifting rod 2 facing the push rod 52 is provided with a groove 21. The sliding part 521 extends into the groove 21 and is slidably connected with the groove 21. The part of the sliding part that contacts the groove 21 is designed as a smooth arc surface. At the same time, a stop is provided at the opening of the groove 21. The stop can engage with the sliding part 521 to restrict the sliding part 521 from moving outward from the groove 21 and dislodging from the lifting rod 2 during the sliding process. When the driver 51 controls the push rod 52 to extend or retract, the sliding part 521 can slide up and down along the length direction of the groove 21 to drive the lifting rod 2 to rotate around the hinge support 3, thereby realizing the inward retraction or outward opening of the lifting rod 2.

[0039] Furthermore, such as Figure 1As shown, the end of the base 1 facing away from the limiting seat 11 is a hemispherical structure, and the outer side of the hemispherical structure is covered with a flexible pad 13. The purpose is to allow the hemispherical structure of the base 1 to be easily aligned with the lifting hole on the prefabricated component 6 and pass through the lifting hole during use. The flexible pad 13 forms a protective layer for the base 1, preventing the base 1 from colliding with the prefabricated component 6 and causing damage.

[0040] The precast component hoisting device in this application has a simple overall structure and is easy to operate. It uses multiple lifting rods 2 to fix the plane of the precast component 6, which reduces the number of lifting holes that need to be opened for the precast component 6 compared with the traditional method. This helps to improve the strength and integrity of the precast component 6 and meet the functional requirements of different precast components 6.

[0041] The overall safety is higher. Each precast component hoisting tool can make multi-point contact with the precast component 6 through the lifting rod 2, forming a more effective and balanced support for the precast component 6, which improves the stability and safety of the hoisting operation.

[0042] It makes it easier to adjust the hoisting posture of the precast component 6. The entire hoisting process can be maintained in the set hoisting posture by simply adjusting the length of the steel strand connected to the hoisting tool of the precast component. It also makes it easy to adjust the posture of the precast component 6. This not only simplifies the operation process and meets the needs of different hoisting postures of the precast component 6, but also improves the hoisting efficiency.

[0043] This application also proposes a method for hoisting prefabricated components, using the prefabricated component hoisting equipment described in the above embodiments for hoisting operations. In a specific embodiment, such as... Figure 5 As shown, the prefabricated component 6 to be hoisted is a prefabricated staircase with three hoisting holes along its centerline. The prefabricated staircase needs to be hoisted and assembled at an angle. The hoisting method specifically includes the following steps:

[0044] S1. Connect the steel strand of the hoisting equipment to the lifting lug 4 of the precast component hoisting tool;

[0045] In this embodiment, the hoisting equipment is equipped with three steel strands, and before hoisting, the length of the steel strands is calculated to match the hoisting tools for prefabricated components at different positions, based on the hoisting posture, shape, and position of the hoisting holes of the prefabricated staircase.

[0046] S2. Retract the lifting rod 2 of the precast component hoisting tool and pass it through the lifting hole on the precast component 6 to be hoisted;

[0047] Specifically, under normal circumstances, before hoisting, in order to facilitate the connection between the prefabricated component 6 and the hoisting tool, the part where the hoisting hole of the prefabricated component 6 is located is suspended in the air; the hoisting tool with a spherical structure is passed through the hoisting hole on the prefabricated component 6 with one end facing downward, preferably to the lower part of the prefabricated component 6;

[0048] S3. Control the lifting rod 2 to open, so that the lifting rod 2 abuts against the precast component 6;

[0049] In this embodiment, the driver 51 on the precast component hoisting tool can be controlled by a switch button or a remote control, and there is no limitation on that. When the precast component hoisting tool passes through the hoisting hole and is located below the precast component 6, the driver 51 is run to control the hoisting rod 2 to open, so that one end of the hoisting rod 2 contacts the plane of the precast component 6 around the hoisting hole. Then the steel strand is tightened so that the hoisting rod 2 is pressed against the precast component 6.

[0050] It should be noted that when the precast component 6 has multiple lifting holes, the lifting devices for the precast component at each lifting hole can be installed simultaneously or sequentially.

[0051] S4. Adjust the hoisting posture of the precast component 6 by adjusting the length of different steel strands;

[0052] Specifically, the steel strands are pre-tightened using hoisting equipment, and the posture of the precast component 6 is checked by observing the tightness of different steel strands. If it does not meet the requirements, the length of the steel strands is adjusted until the posture of the precast component 6 meets the hoisting requirements.

[0053] S5. After the hoisting operation is completed, control the hoisting boom 2 to retract and remove it from the hoisting hole.

[0054] In a comparative example, when the prefabricated staircase in the above embodiment is hoisted using conventional methods, at least three pairs of hoisting holes, totaling six, need to be reserved on the prefabricated staircase. By using the prefabricated component hoisting tool in this application for hoisting operations, only three hoisting holes need to be opened on the prefabricated staircase. Furthermore, it is more convenient to adjust the hoisting posture of the prefabricated staircase, simplifying the operation steps, reducing the difficulty of operation and the workload of operators, and improving hoisting efficiency.

[0055] In another embodiment of this application, the prefabricated component 6 to be hoisted is a large-sized plate structure, and due to its functional limitations, only one hoisting hole can be opened in its middle; conventional hoisting tools and methods cannot hoist it; however, the prefabricated component hoisting tool in this application can complete the hoisting operation quickly and efficiently.

[0056] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A hoisting tool for prefabricated components, characterized in that: The device includes a base and multiple lifting rods. The base has a limiting seat and a limiting groove surrounding the limiting seat. One end of the limiting seat protrudes from the limiting groove and has a lifting lug. One end of each lifting rod extends into the limiting groove and is rotatably connected to the base. Controlling the rotation of the lifting rod can cause its other end to retract inward or open outward, so that the lifting rod is located inside the base or extends outward from the base.

2. The precast component hoisting tool according to claim 1, characterized in that: At least three of the aforementioned booms are of equal length and are evenly arranged along the circumference of the limiting groove.

3. A precast component hoisting tool according to claim 1 or 2, characterized in that: The inner wall of the limiting groove is inclined from the outside to the inside so that the hanging rod fits against the inner wall after the opening is opened.

4. The precast component hoisting tool according to claim 3, characterized in that: The limiting seat includes a cylindrical groove adapted to the shape of the boom, the cylindrical groove being arranged along the axial direction of the limiting seat and extending to the bottom of the limiting groove.

5. The precast component hoisting tool according to claim 4, characterized in that: The boom is mounted on the bottom of the limiting groove or the bottom of the cylindrical groove via a hinge support.

6. The precast component hoisting tool according to claim 5, characterized in that: The limiting seat is also provided with a driving component, which is connected to the boom and is used to drive the boom to retract or extend.

7. The precast component hoisting tool according to claim 6, characterized in that: The drive assembly includes a driver and a push rod disposed at the drive end of the driver. The push rod is arranged radially along the limiting groove, and its other end is provided with a sliding part. The side of the hanger facing the limiting seat is provided with a sliding groove along its length direction, and the sliding part is slidably connected to the sliding groove.

8. The precast component hoisting tool according to claim 7, characterized in that: The sliding part has a smooth arc surface, and the sliding groove has a stop edge that engages with the sliding part.

9. The precast component hoisting tool according to any one of claims 4-5, characterized in that: The end of the base facing away from the limiting seat is a hemispherical structure, and the outer side of the hemispherical structure is covered with a flexible pad.

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