Prefabricated part lifting appliance and lifting system

Abstract

The utility model relates to the field of hoisting of fabricated building prefabricated parts, in particular to a prefabricated part hoisting tool and a hoisting system. At least two hoisting connecting parts are arranged at each hoisting part, a proper hoisting position can be selected according to the gravity center of the prefabricated part, the gravity center of the prefabricated part is balanced, the first hoisting leg is vertically connected with the main frame, and the first hoisting leg is rigidly connected with the prefabricated part through a bolt during hoisting, so that the hoisting effect is improved. The hoisting connecting part can be vertically and uniformly stressed during hoisting, and the hoisting connecting part is not easy to rotate during hoisting. The lifting appliance for the prefabricated part is used for lifting the prefabricated part, the shaking amplitude in the lifting process is small, the lifting appliance can fall to the ground stably, the risk of collision when falling to the ground can be reduced, and the lifting efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting of prefabricated components for assembled buildings, and particularly relates to a hoisting tool for prefabricated components and a hoisting system. Background Art

[0002] In bridge construction, the construction of prefabricated bridge decks has attracted more and more attention due to its high efficiency and environmental protection characteristics. The bridge deck auxiliary facilities of more and more high-speed railway projects adopt prefabricated structures. The bridge deck auxiliary facilities of a certain line adopt prefabricated components with a length of 4m per segment, a standard width of 1.77m, and the maximum weight of a single component is about 6.5t, which are eccentric components.

[0003] In the construction of component hoisting, it is often necessary to use a hoisting tool to hoist prefabricated components. Traditional hoisting tools generally use steel ropes in combination with lifting buckles. During the hoisting process, due to the problem of eccentric center of gravity of the components, the hoisting and landing are often not stable enough. During the hoisting process, the components swing greatly, and the safety risk is relatively high, which is not conducive to the installation construction of the components. Moreover, it is extremely easy to have a bumping phenomenon when landing, which affects the appearance quality of the components and requires a large amount of manpower and time to repair. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hoisting tool for prefabricated components, aiming to make the components hoisted and landed smoothly and improve the hoisting efficiency and safety.

[0005] In a first aspect, the utility model provides a hoisting tool for prefabricated components, comprising:

[0006] A main frame, provided with at least three hoisting parts, and the at least three hoisting parts are arranged at triangular points. Each hoisting part is provided with at least two hoisting connection parts for hoisting connection;

[0007] A first lifting leg, vertically connected to the main frame. The first lifting legs are arranged at intervals in two columns, and the number of at least one column of the first lifting legs is at least two. The bottom of the first lifting leg is provided with a first hoisting hole, and the first hoisting hole is used for pin connection with the prefabricated component.

[0008] The utility model sets at least three hoisting parts on the main frame for hoisting and mechanical connection, and sets at least three first lifting legs at the bottom of the main frame for connecting precast components to be hoisted. Compared with one or two lifting points, it is easier to maintain the balance of the main frame and the components. Further, the utility model sets at least two hoisting connection parts for hoisting connection at each hoisting part, which is convenient to select a suitable position for hoisting connection according to the center of gravity of the precast component, conducive to balancing the center of gravity of the precast component and stable hoisting. At the same time, the utility model vertically connects the first lifting leg with the main frame and rigidly connects the first lifting leg with the precast component through a pin, so that the hoisting connection part can be vertically stressed and evenly stressed during hoisting, and the hoisting is not easy to rotate. The precast component lifting device has a small shaking amplitude during the lifting process, is stable during lifting and landing, can reduce the risk of bumping during landing, and improve the lifting efficiency and safety.

[0009] Preferably, the main frame includes longitudinal beams and cross beams. There are two longitudinal beams, and the two longitudinal beams are arranged in parallel. The cross beam transversely connects the two longitudinal beams, and the first lifting leg is connected with the longitudinal beam; the number of the cross beams is several.

[0010] Preferably, the top of the first lifting leg is butted against the bottom of the longitudinal beam, and the first lifting leg and the longitudinal beam are connected by a second steel plate on the outer side.

[0011] Preferably, at least one stiffening beam is obliquely arranged between the two longitudinal beams, and the stiffening beam is arranged in a × shape for structural strengthening.

[0012] Preferably, two rows of second lifting legs are arranged at the bottom of the main frame, and the two rows of second lifting legs are located inside the two rows of first lifting legs. The bottom of the second lifting leg is provided with a second hoisting hole, and the length of the second lifting leg is shorter than that of the first lifting leg.

[0013] Preferably, a backing plate is provided at the bottom of the second lifting leg.

[0014] Preferably, the hoisting connection part includes a lifting lug.

[0015] Preferably, the hoisting connection part further includes a first steel plate, the lifting lug is fixed on the first steel plate, and the first steel plate is fixed on the upper surface of the main frame.

[0016] Preferably, all the hoisting connection parts at each hoisting part are linearly arranged in the transverse direction, which is more suitable for the center of gravity adjustment of the eccentric components in the bridge precast assembly. As other implementable ways, an L-shaped corner arrangement method can also be adopted, that is, it is arranged along the cross beam direction and also along the longitudinal beam direction.

[0017] In a second aspect, the present utility model provides a hoisting system, including a hoisting device and the above-mentioned precast component sling. The hoisting device is connected to the precast component sling, with stable hoisting, high efficiency and safety. The hoisting device can be a crane, a balance beam, a gantry crane, etc.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The present utility model provides a precast component sling. At each hoisting position, a suitable lifting position can be selected according to the center of gravity of the precast component to balance the center of gravity of the precast component. Also, by vertically connecting the first lifting leg to the main frame and rigidly connecting the first lifting leg to the precast component with a pin during hoisting, the hoisting connection part can be vertically stressed and evenly stressed during hoisting, and it is not easy to rotate during hoisting. When using this precast component sling to hoist the precast component, the shaking amplitude during the hoisting process is small, and it can be lifted and landed smoothly, which can reduce the risk of bumping during landing and improve the hoisting efficiency and safety. Description of the Drawings

[0020] Figure 1 It is a structural schematic diagram of a precast component sling in Embodiment 1;

[0021] Figure 2 For Figure 1 the plan view of

[0022] Figure 3 For Figure 1 the longitudinal sectional view of

[0023] Markings in the figure: 1 - longitudinal beam; 2 - cross beam; 3 - stiffening beam; 4 - first lifting leg; 41 - first hoisting hole; 5 - hoisting connection part; 6 - second steel plate; 7 - second lifting leg. Detailed Embodiments

[0024] The following further describes the present utility model in detail with specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model belong to the scope of the present utility model.

[0025] Unless otherwise specified, in the description of the specific embodiments of the present utility model, the expression terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product / device / device of the present utility model is habitually used. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present utility model.

[0026] In addition, if terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still play its role in the solution of the present utility model.

[0027] In addition, when the terms "first", "second", "third", etc. appear, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0028] In addition, in the description of the embodiments of the present utility model, "several", "multiple", "a plurality of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be more than 9.

[0029] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / limited, when terms such as "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, screw connection, etc. This connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0030] Example 1

[0031] like Figures 1-3 As shown, a prefabricated component hoist includes a main frame and a first hanging leg 4. The main frame is arranged in a plane, and at least three hanging positions are arranged in a triangular point arrangement. At least two hanging connections 5 are arranged at each hanging position. The hanging connection 5 is used to connect the lifting structure of the lifting machinery. The two hanging connections 5 at each hanging position can select a suitable position according to the center of gravity of the prefabricated component, which is conducive to balancing the center of gravity of the prefabricated component and stabilizing the lifting; the first hanging leg 4 is arranged at the bottom of the main frame, and is arranged in two rows along the length direction (i.e., longitudinal direction) of the prefabricated component. The number of the first hanging legs 4 in at least one row is set at least two. The first hanging leg 4 is vertically connected to the main frame and is used for rigidly connecting the bridge assembly prefabricated component to be lifted, such as railings, sound barriers, etc. The first hanging leg 4 can also stably support the main frame, which is conducive to the stable placement of the main frame; preferably, at least four lifting points are arranged at the bottom of the main frame corresponding to the prefabricated component to be lifted, so that it is easier to maintain the balance of the main frame and the component. Among them, there should be a large distance between two adjacent lifting locations, such as greater than 50cm, and they should be obviously not in the same position.

[0032] In one or more possible implementation modes, it is preferred that at least three first hanging legs 4 are provided in each row to accommodate the hoisting operation of prefabricated components of different lengths.

[0033] In one or more possible implementations, the main frame includes a longitudinal beam 1 and a cross beam 2, at least two longitudinal beams 1 are provided and all longitudinal beams 1 are arranged parallel to each other in the longitudinal direction, and the cross beam 2 is extended in the transverse direction to connect two adjacent longitudinal beams 1. The longitudinal beam 1 and the cross beam 2 are preferably fixedly connected to form a square structure, which is more stable and convenient to connect, such as a rectangular, a "日" shape, a "目" shape, and a "#" shape, and the longitudinal beam 1 and the cross beam 2 are vertically connected.

[0034] In one or more possible implementation modes, the main frame also includes a stiffening beam 3, which is used to strengthen the main frame structure. The stiffening beam 3 can be set on the longitudinal beam 1 or the cross beam 2, or connect the longitudinal beam 1 and the longitudinal beam 1, or connect the cross beam 2 and the cross beam 2.

[0035] For example, Figure 1 , Figure 2 As shown, in this embodiment, two longitudinal beams 1 are provided, four cross beams 2 are provided in parallel between the two longitudinal beams 1 , the cross beams 2 are vertically connected to the longitudinal beams 1 , and the stiffening beams 3 are arranged in an X shape between two adjacent cross beams 2 .

[0036] In this embodiment, the hoisting parts are respectively arranged at the four corners of the upper surface of the main frame. The four corners are roughly arranged in a rectangular point layout, corresponding to each other front, back, left and right, symmetrically arranged, and adapted to the plane shape of the precast component, which is conducive to stable hoisting and uniform force. At least two hoisting connection parts 5 are arranged at each corner position; the hoisting connection part 5 preferably adopts a lug structure. The lug hoisting point is fixedly connected to the main frame through a first steel plate. The first steel plate has a relatively large area, which is convenient for lug connection. In this embodiment, both ends of the two longitudinal beams 1 on both sides extend beyond the cross beam 2. At least one hoisting connection part 5 is arranged at the connection nodes of the longitudinal and cross beams 2 at the four corners and nearby, which is conducive to the force of the structure. At the four corners of the whole main frame, three hoisting connection parts 5 are preferably arranged along the cross beam 2, with a spacing of 5 cm - 25 cm. For example, the first steel plate of the hoisting connection part 5 is arranged along the longitudinal beam 1 at the connection node, and the first steel plates of the other two hoisting connection parts 5 can be connected to the cross beam 2 and the stiffening beam 3 at the same time, with high connection strength and good stress performance. The connection hoisting points at each corner can be connected to the lugs at appropriate positions according to the center of gravity of the precast component, which is conducive to hoisting stability.

[0037] In one or more feasible embodiments, a first hoisting hole 41 is arranged at the bottom of the first lifting leg 4. The first hoisting hole 41 is arranged along the transverse direction of the precast component. The first hoisting hole 41 can be directly inserted and connected with the hoisting hole of the precast component through a hoisting steel bar. The two ends of the hoisting steel bar are fixed and limited by threaded connection nuts. It can also be indirectly connected to the precast component through connecting pieces such as parallel hanging plates. The two ends of the parallel hanging plate are respectively inserted and connected with the first lifting leg 4 and the precast component through hoisting steel bars, preventing the relative movement between the precast component and the first lifting leg 4, which is convenient for installation and removal. During hoisting, the precast component can be relatively stable with the first lifting leg 4, with a small shaking amplitude and safer construction. Among them, the first hoisting hole 41 can preferably adopt a 100 mm long round hole, which is convenient for the installation and removal of the hoisting steel bar.

[0038] In this embodiment, a first lifting leg 4 is correspondingly arranged at each connection point of the longitudinal beam 1 and the cross beam 2, that is, there are four first lifting legs 4 in each column, and there are 8 lifting legs in total to adapt to the hoisting operations of different components, and the top and bottom of the first lifting leg 4 are strengthened with steel plates. The first lifting leg 4 is specifically arranged at the bottom of the longitudinal beam 1. The first lifting leg 4 and the longitudinal beam 1 are aligned on the outer side and connected by a second steel plate 6 to strengthen the connection strength between the first lifting leg 4 and the longitudinal beam 1.

[0039] In this embodiment, 12 lugs are arranged above the lifting tool, and the balance hoisting operation of different components can be adapted by changing the position of the hoisting point. When the component is hoisted, the first hoisting hole 41 at the bottom of the lifting leg is aligned with the hoisting hole of the precast component, and the hoisting steel bar is inserted, so as to realize four-point synchronous hoisting. During hoisting, the hoisting points are vertically stressed and the stress is uniform, and the hoisting process is stable, which is conducive to effectively improving the installation efficiency and installation quality of the component and reducing the safety risk.

[0040] Further, in one or more embodiments, the above-mentioned precast component sling further includes a second lifting leg 7. The second lifting leg 7 is vertically connected to the bottom of the main frame and is strengthened with steel plates at the top and bottom of the second lifting leg 7. The second lifting leg 7 is specifically connected to the bottom of the cross beam 2. The first lifting leg 4 and the second lifting leg 7 are arranged at intervals in the lateral direction, which can adapt to the hoisting operations of precast components with different width dimensions. The length of the second lifting leg 7 is shorter than that of the first lifting leg 4 to avoid structural interference with some precast components. Correspondingly, there are two columns of the second lifting legs 7 in the lateral direction, and at least one column of the second lifting legs 7 has two; preferably, each column of the first lifting legs 4 is provided with at least three to adapt to the hoisting operations of precast components with different length dimensions.

[0041] In this embodiment, the two columns of the second lifting legs 7 are located inside the two columns of the first lifting legs 4 and correspond to the first lifting legs 4 in the lateral direction. The bottom of the second lifting leg 7 is provided with a second hoisting hole, and a backing plate is provided at the bottom end face of the second lifting leg 7. The second lifting leg 7 can be used to assist in connecting precast components.

[0042] As another embodiment, according to the size of the precast component, only the second lifting leg 7 can be used to hoist the precast component. The connection method is the same as that of the first lifting leg 4, or one side of the precast component is connected by the corresponding first lifting leg 4 on that side, and the other side of the precast component is connected by the corresponding second lifting leg 7 on that side.

[0043] In this embodiment, the longitudinal beam 1, the cross beam 2, the first lifting leg 4 and the second lifting leg 7 are all made of No. 14a channel steel, and the stiffening beam 3 is made of No. 10 channel steel. The channel steel components are not only convenient to obtain materials, but also have low costs and can meet the strength requirements.

[0044] The above-mentioned precast component sling is simple to manufacture and has good load-bearing capacity. At the same time, the lifting position can be adjusted according to the center of gravity position of the precast component. During the lifting process, it is not easy to rotate, the shaking amplitude during the hoisting process is small, the landing is more stable, the stability is good, and the working efficiency is greatly improved.

[0045] Embodiment 2

[0046] A hoisting system includes a hoisting device and the above-mentioned precast component sling, and the hoisting device is connected to the precast component sling.

[0047] The hoisting device can be a crane. The crane is connected to the sling through a hook and a steel wire rope, and is connected to the precast component through the sling. With the help of the crane, multiple precast component products can be continuously hoisted.

[0048] The hoisting device can also be a balance beam, on which a hoisting assembly that can move back and forth along the balance beam is provided. It can flexibly adjust the position of the hoisting part according to the size of the bridge deck, balance the forces on each hoisting point, prevent single-point overload, keep the hoisted equipment - the precast component hoist and the precast component balanced, has a wide range of applications, is conducive to popularization and application in production practice, and is convenient for installation and disassembly, with strong operability, which helps to improve the hoisting efficiency of precast and assembled component products.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A prefabricated component hanger, characterized in that: include: The main frame is provided with at least three lifting positions, the at least three lifting positions are arranged in a triangular point, and each of the lifting positions is provided with at least two lifting connection parts (5) for lifting connection; A first hanging leg (4) is vertically connected to the main frame. The first hanging legs (4) are arranged in two rows at intervals. The number of the first hanging legs (4) in at least one row is at least two. A first hanging hole (41) is provided at the bottom of the first hanging leg (4). The first hanging hole (41) is used for connecting the prefabricated component with a pin.

2. A prefabricated component hanger according to claim 1, characterized in that: The main frame comprises a longitudinal beam (1) and a cross beam (2), wherein two longitudinal beams (1) are provided, and the two longitudinal beams (1) are arranged in parallel, the cross beam (2) transversely connects the two longitudinal beams (1), and the first hanging leg (4) is connected to the longitudinal beam (1); and the number of the cross beams (2) is provided to be a plurality.

3. A prefabricated component hanger according to claim 2, characterized in that: The top of the first hanging leg (4) is butted against the bottom of the longitudinal beam (1), and the first hanging leg (4) and the longitudinal beam (1) are connected on the outer side surface via a second steel plate (6).

4. A prefabricated component hanger according to claim 2, characterized in that: At least one stiffening beam (3) is obliquely provided between the two longitudinal beams (1), and the stiffening beams (3) are arranged in an X shape.

5. The prefabricated component hanger according to claim 1, characterized in that: Two rows of second hanging legs (7) are provided at the bottom of the main frame, the two rows of second hanging legs (7) are located on the inner sides of the two rows of first hanging legs (4), second hanging holes are provided at the bottoms of the second hanging legs (7), and the length of the second hanging legs (7) is shorter than that of the first hanging legs (4).

6. A prefabricated component hanger according to claim 5, characterized in that: A pad is provided at the bottom of the second hanging leg (7).

7. A prefabricated component hanger according to any one of claims 1 to 6, characterized in that: The lifting connection portion (5) comprises a lifting lug.

8. A prefabricated component hanger according to claim 7, characterized in that: The lifting connection portion (5) further comprises a first steel plate, the lifting lug is fixed on the first steel plate, and the first steel plate is fixed on the upper surface of the main frame.

9. A prefabricated component hanger according to any one of claims 1 to 6, characterized in that: All the hoisting connection parts (5) at each hoisting position are arranged in a transverse direction or in an L-shape.

10. A hoisting system, characterized in that: It comprises a lifting device and the prefabricated component lifting tool according to any one of claims 1 to 9, wherein the lifting device is connected to the prefabricated component lifting tool.

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