Portable hoisting device for steel beams

Abstract

The utility model provides a portable hoisting device of steel beam for solving the problem of time -consuming and labor -intensive, cost and low construction efficiency of steel beam hoisting lug welding in the prior art, it includes: two groups of hoisting assembly and flexible connecting piece, and each hoisting assembly includes first clamping part, second clamping part and movable connecting piece, and the first clamping part and the second clamping part are same in structure, the first clamping part includes first cross arm, second cross arm and connecting arm, and the both ends of connecting arm are fixedly connected with one end of first cross arm and one end of second cross arm to form the clamping space of clamping with the upper flange plate of steel beam, and first cross arm has through -hole, the through -hole on the first cross arm of first clamping part and the through -hole on the first cross arm of second clamping part are coaxial and are connected through movable connecting piece, and the movable connecting piece on two groups of hoisting assembly is connected through flexible connecting piece to provide for the hook to hook. The device structure is simple, convenient, time -saving and laborsaving, and can be repeatedly used to reduce the cost, and also can improve construction efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of steel beam hoisting construction technology, and in particular relates to a portable steel beam hoisting device. Background Technology

[0002] During steel structure construction, the steel beams are typically hoisted using welded hoisting lugs and lifting equipment.

[0003] However, installation requires welding, a relatively complex and time-consuming process. Disassembly necessitates cutting off the lifting lugs, which cannot be reused and must be treated as scrap steel, increasing material costs. The cutting process also damages the surface of the steel beam, requiring subsequent grinding and other treatments, which is time-consuming, labor-intensive, and inefficient. Furthermore, the welding process can easily cause localized heating of the steel beam, generating welding stress, which, if not handled properly, may affect the structural performance of the steel beam. The cutting marks left after disassembly also affect the appearance and integrity of the steel beam. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a portable steel beam hoisting device to solve the problems of time-consuming, labor-intensive, costly, and inefficient construction of welding lugs for steel beam hoisting in the prior art.

[0005] To achieve the above and other related objectives, this utility model provides a portable steel beam hoisting device, comprising: Two sets of hoisting assemblies, each set of hoisting assemblies including a first locking part, a second locking part and a movable connecting part, wherein the first locking part and the second locking part have the same structure; The first engaging part includes a first cross arm, a second cross arm, and a connecting arm. The two ends of the connecting arm are respectively fixedly connected to one end of the first cross arm and one end of the second cross arm to form an engaging space for engaging with the upper flange plate of the steel beam. The first cross arm has a through hole. The through hole on the first horizontal arm of the first engaging part and the through hole on the first horizontal arm of the second engaging part are coaxially arranged and connected by the movable connector; A flexible connector that connects the movable connectors on the two sets of the lifting assemblies for hooking.

[0006] Optionally, the other end of the first cross arm has a protrusion on its upper part, and the through hole is located on the protrusion.

[0007] Optionally, the length of the first cross arm is greater than the length of the second cross arm.

[0008] Optionally, the movable connector includes: Two end rings and a U-shaped body, wherein the two ends of the U-shaped body are fixedly connected to the two end rings; A pin is inserted into the two end rings, and one end of the pin has a limiting block. A locking member is provided for locking the other end of the pin after it has passed sequentially through the through hole on the first horizontal arm of the first engaging portion and the through hole on the first horizontal arm of the second engaging portion.

[0009] Optionally, the movable connector further includes an anti-detachment component, and the other end of the pin has an anti-detachment hole that mates with the anti-detachment component.

[0010] Optionally, the U-shaped body and the two end rings are integrally formed.

[0011] Optionally, the flexible connector is a steel wire rope.

[0012] Optionally, the diameter of the wire rope is 20mm.

[0013] Optionally, the length of the wire rope shall not exceed 10m.

[0014] Optionally, the hoisting angle of the flexible connector shall not exceed 60°.

[0015] As described above, the portable steel beam hoisting device of this utility model has at least the following beneficial effects: By clamping two sets of lifting components at positions no more than 2 meters from either end of the steel beam flange, the first and second clamping spaces engage the steel beam flange, fixing one side of the steel beam body within each of the two clamping spaces. This eliminates the need for welding lifting lugs, allowing for rapid installation and disassembly while preserving the integrity of the steel beam. A movable connector is then passed through the through-holes of the first and second clamping parts in the same set of lifting components, connecting them to form a connection point. Using two sets of lifting components connected to the tower crane hook via a flexible connector provides two stable lifting points, which helps maintain the steel beam's water level during lifting. The smooth and stable operation enhances the safety of the hoisting process, facilitating the lifting of the steel beam. When the hoisting hook applies upward force, the tension is transmitted to the two sets of hoisting components through the flexible connectors, and then distributed to the first and second locking parts through the movable connectors. The locking parts, through the constraint of the flange plate and the locking space, convert the tension into an upward lifting force on the steel beam, ultimately achieving the overall lifting of the steel beam. After the hoisting is completed, the hoisting components can be removed from the flange plate of the steel beam by disassembling the movable connectors. The overall operation is simple, convenient, time-saving, labor-saving, reusable, and reduces costs. It not only solves the problems of material waste and increased costs when using lifting lugs for welding, but also greatly improves the efficiency of steel beam hoisting construction. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model; Figure 2 The diagram shown is a three-dimensional structural schematic of the hoisting assembly of this utility model. Figure 3 This is a three-dimensional structural schematic diagram of the hoisting assembly of this utility model from another perspective; Figure 4 The diagram shown is a schematic diagram of the movable connector structure of this utility model.

[0017] Component designation explanation Lifting assembly 1, first engaging part 11, first cross arm 111, second cross arm 112, connecting arm 113, through hole 114, protrusion 115, engaging space 116, second engaging part 12, movable connecting piece 13, end ring 131, U-shaped body 132, pin 133, locking piece 134, limiting block 135; 2. Flexible connector; 3. Hook; 4. Steel beam. Detailed Implementation

[0018] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0019] Please see Figures 1 to 4 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0020] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0021] In this embodiment, please refer to Figures 1 to 4 This utility model provides a portable hoisting device for steel beams, comprising: Two sets of lifting components and flexible connectors are provided. Each set of lifting components includes a first engaging part, a second engaging part, and a movable connector. The first engaging part and the second engaging part have the same structure, which facilitates production and the provision of spare parts. The first engaging portion includes a first cross arm, a second cross arm, and a connecting arm. The two ends of the connecting arm are fixedly connected to one end of the first cross arm and one end of the second cross arm, respectively, to form an engaging space for engaging with the upper flange plate of the steel beam. The first cross arm has a through hole. The opening width of the engaging space is slightly larger than the thickness of the steel beam flange plate. Nylon blocks or rubber pads can be provided at the bottom of the first cross arm and the top of the second cross arm to increase the friction between the first cross arm and the steel beam flange plate.

[0022] The through hole on the first horizontal arm of the first engaging part and the through hole on the first horizontal arm of the second engaging part are coaxially arranged and connected by the movable connector; the length of the steel beam during hoisting can be 12.67m, 11.97m, 9.78m, etc., and the distance between the first engaging part and the second engaging part and the end of the steel beam during hoisting is no more than 2m, thereby reducing the maximum bending moment generated by the steel beam during hoisting.

[0023] The flexible connector connects the movable connectors on the two sets of lifting assemblies for hooking.

[0024] By clamping two sets of lifting components at positions no more than 2 meters from either end of the steel beam flange, the first and second clamping spaces engage the steel beam flange, fixing one side of the steel beam body within each of the two clamping spaces. This eliminates the need for welding lifting lugs, allowing for rapid installation and disassembly while preserving the integrity of the steel beam. A movable connector is then passed through the through-holes of the first and second clamping parts in the same set of lifting components, connecting them to form a connection point. Using two sets of lifting components connected to the tower crane hook via a flexible connector provides two stable lifting points, which helps maintain the steel beam's water level during lifting. The smooth and stable operation enhances the safety of the hoisting process, facilitating the lifting of the steel beam. When the hoisting hook applies upward force, the tension is transmitted to the two sets of hoisting components through the flexible connectors, and then distributed to the first and second locking parts through the movable connectors. The locking parts, through the constraint of the flange plate and the locking space, convert the tension into an upward lifting force on the steel beam, ultimately achieving the overall lifting of the steel beam. After the hoisting is completed, the hoisting components can be removed from the flange plate of the steel beam by disassembling the movable connectors. The overall operation is simple, convenient, time-saving, labor-saving, reusable, and reduces costs. It not only solves the problems of material waste and increased costs when using lifting lugs for welding, but also greatly improves the efficiency of steel beam hoisting construction.

[0025] In this embodiment, please refer to Figure 2 and Figure 3The other end of the first crossarm has a protrusion on its upper part, and the through hole is located on the protrusion. The protrusion can be a semi-circular structure, which can enhance the structural strength and optimize the transmission of force.

[0026] In this embodiment, please refer to Figure 2 and Figure 3 The length of the first cross arm is greater than that of the second cross arm, which allows it to adapt to the center of gravity of the flange plate. The clamping space forms a stable clamping on the flange plate, thereby optimizing the force balance of the clamping space and improving the bonding stability with the steel beam flange plate.

[0027] In this embodiment, please refer to Figure 1 and Figure 3 The movable connector includes: Two end rings and a U-shaped body, wherein the two ends of the U-shaped body are fixedly connected to the two end rings, and the inner side of the U-shaped body is connected to a flexible connector; A pin is inserted into the two end rings, and one end of the pin has a limiting block. A locking element is provided, which is used to lock the other end of the pin after it has passed sequentially through the through hole on the first horizontal arm of the first engaging portion and the through hole on the first horizontal arm of the second engaging portion. The locking element can be a nut, in which case the other end of the pin has an external thread that mates with the nut. In another specific embodiment, the inner surface that mates with the other end of the pin can also have an internal thread that mates with the external thread of the other end of the pin.

[0028] By inserting the pin into the through hole on the first horizontal arm of the first engaging part and the through hole on the first horizontal arm of the second engaging part, and locking the pin with a locking member, the limiting block is pressed against the outer side of one end ring and the locking member is pressed against the outer side of the other end ring, thereby connecting the first engaging part and the second engaging part. The structure is simple and reliable, low in cost, has good load-bearing capacity, and is easy to install and disassemble.

[0029] In this embodiment, the movable connector further includes an anti-detachment component, and the other end of the pin has an anti-detachment hole that mates with the anti-detachment component. The anti-detachment component can be a bolt, and by inserting the bolt into the anti-detachment hole and connecting it with a nut, the safety and reliability of the connection are further improved.

[0030] In this embodiment, please refer to Figure 3 The U-shaped body and the two end rings are integrally formed. The integrally formed U-shaped body and the two end rings are sturdy and durable, with higher strength and long service life.

[0031] In this embodiment, please refer to Figure 1 The flexible connector is a steel wire rope, which has good load-bearing capacity, wear resistance, and long service life.

[0032] In this embodiment, the wire rope has a diameter of 20mm, which enables it to have a matching load-bearing capacity, meet the high strength requirements, thereby satisfying the matching of structural strength and durability, and extending the service life.

[0033] In this embodiment, the length of the wire rope does not exceed 10m.

[0034] In this embodiment, please refer to Figure 1 The lifting angle of the flexible connector shall not exceed 60°. By controlling the lifting angle of the flexible connector, the lifting stability can be improved.

[0035] Working principle: When using, first check the flexible connectors and lifting components to ensure they are undamaged; By clamping the two sets of lifting components at any position no more than 2m from both ends of the steel beam flange, the clamping space of the first clamping part and the clamping space of the second clamping part clamp the steel beam flange, so that one side of the steel beam body is fixed in the two clamping spaces respectively. Then, the pin is inserted into the through hole on the first horizontal arm of the first clamping part and the through hole on the first horizontal arm of the second clamping part. The pin is locked with the locking part, so that the limiting block is close to the outer side of one end ring and the locking part is close to the outer side of the other end ring, thereby connecting the first clamping part and the second clamping part to form a connection point. The two sets of lifting components are connected to the tower crane hook through the flexible connector. When the lifting hook applies upward force, the tension is transmitted to the two sets of lifting components through the flexible connector, and then distributed to the first and second locking parts through the movable connector. The locking parts, through the constraint of the flange plate and the locking space, convert the tension into an upward lifting force on the steel beam, and finally realize the overall lifting of the steel beam. The test lift is 10-20cm off the ground to check the condition of the equipment, the steel beam and the lifting angle. If there are no abnormalities, the lifting continues. After the lifting is completed, the lifting components can be removed from the flange plate of the steel beam by disassembling the movable connector. The overall operation is simple, convenient, time-saving and labor-saving, and reusable, which reduces costs.

[0036] In summary, this utility model, by respectively clamping two sets of lifting components at any position no more than 2m from both ends of the steel beam flange, and using the clamping spaces of the first and second clamping parts to clamp the steel beam flange, fixes both sides of one end of the steel beam body within the two clamping spaces. This eliminates the need for welding lifting lugs, resulting in fast installation and disassembly while protecting the integrity of the steel beam. Then, a movable connector is passed through the through holes of the first and second clamping parts in the same set of lifting components to connect the first and second clamping parts, forming a connection point. Using two sets of lifting components and connecting them to the tower crane hook via a flexible connector provides two stable lifting points, which is beneficial for the steel beam during lifting. Maintaining horizontal and stable alignment during the process enhances the safety of the hoisting, thus facilitating the lifting of the steel beam. When the hoisting hook applies upward force, the tension is transmitted to the two sets of hoisting components through flexible connectors, and then distributed to the first and second locking parts through movable connectors. The locking parts, through constraints with the flange plates and the locking space, convert the tension into an upward lifting force on the steel beam, ultimately achieving the overall lifting of the steel beam. After hoisting, the hoisting components can be removed from the flange plates of the steel beam by disassembling the movable connectors. The overall operation is simple, convenient, time-saving, labor-saving, reusable, and cost-reducing. It not only solves the problems of material waste and increased costs when using welding lugs, but also greatly improves the efficiency of steel beam hoisting construction. Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0037] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A portable hoisting device for steel beams, characterized in that, include: Two sets of hoisting assemblies, each set of hoisting assemblies including a first engaging part, a second engaging part and a movable connecting part, wherein the first engaging part and the second engaging part have the same structure; The first engaging part includes a first cross arm, a second cross arm, and a connecting arm. The two ends of the connecting arm are respectively fixedly connected to one end of the first cross arm and one end of the second cross arm to form an engaging space for engaging with the upper flange plate of the steel beam. The first cross arm has a through hole. The through hole on the first horizontal arm of the first engaging part and the through hole on the first horizontal arm of the second engaging part are coaxially arranged and connected by the movable connector; A flexible connector that connects the movable connectors on the two sets of the lifting assemblies for hooking.

2. The portable steel beam hoisting device according to claim 1, characterized in that: The other end of the first cross arm has a protrusion on its upper part, and the through hole is located on the protrusion.

3. The portable steel beam hoisting device according to claim 1, characterized in that: The length of the first horizontal arm is greater than the length of the second horizontal arm.

4. The portable steel beam hoisting device according to claim 1, characterized in that: The movable connector includes: Two end rings and a U-shaped body, wherein the two ends of the U-shaped body are fixedly connected to the two end rings; A pin is inserted into the two end rings, and one end of the pin has a limiting block. A locking member is provided for locking the other end of the pin after it has passed sequentially through the through hole on the first horizontal arm of the first engaging portion and the through hole on the first horizontal arm of the second engaging portion.

5. The portable steel beam hoisting device according to claim 4, characterized in that: The movable connector also includes an anti-detachment component, and the other end of the pin has an anti-detachment hole that mates with the anti-detachment component.

6. The portable steel beam hoisting device according to claim 4, characterized in that: The U-shaped body and the two end rings are integrally formed.

7. The portable steel beam hoisting device according to claim 1, characterized in that: The flexible connector is a steel wire rope.

8. The portable steel beam hoisting device according to claim 7, characterized in that: The diameter of the steel wire rope is 20mm.

9. The portable steel beam hoisting device according to claim 7 or 8, characterized in that: The length of the steel wire rope shall not exceed 10m.

10. The portable steel beam hoisting device according to claim 1, characterized in that: The hoisting angle of the flexible connector shall not exceed 60°.

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