Length-adjustable lifting box lifting appliance

Abstract

The utility model provides a length-adjustable hanging box lifting appliance which comprises a main lifting beam, side lifting beams are arranged at the two ends of the main lifting beam respectively, the side lifting beams and the main lifting beam are fixed through connecting pieces, a plurality of rows of connecting holes are formed in the two ends of the main lifting beam respectively, and fixing holes matched with the connecting holes are formed in the main body parts of the side lifting beams; a lifting lug is arranged on the main lifting beam, a lifting hole is formed in one end, far away from the main lifting beam, of the lifting beam on each side, and a plurality of stiffening plates are arranged between the lifting lug and the main lifting beam; two ends of the main lifting beam are respectively provided with main lifting beam reinforcing plates corresponding to the connecting holes; the main hanging beam comprises two steel channels arranged in parallel back to back, the upper ends of the two steel channels are welded to an upper flitch, the lower ends of the two steel channels are welded to a lower flitch, and a sliding way is formed between the upper flitch and the lower flitch. The lifting appliance can be recycled, the length change of the box girder can be matched by moving the lifting beams on the two sides outwards or inwards relative to the main lifting beam, lifting of the box girders with different lengths can be completed, frequent replacement of the lifting appliance is avoided, mounting and dismounting are convenient, and the construction period is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of box beam lifting construction, in particular to a length-adjustable lifting box sling. Background Art

[0002] Large-scale cross-sea and road continuous beams are hoisted and installed in place by prefabricated continuous box beams. When hoisting and installing prefabricated box beams with variable cross-sections and widths, they are high above the ground, have large spans, and are heavy. In the existing technology, when hoisting and installing box beams, multiple hoisting boxes and hoisting tools of different sizes are required on site. When the box beam of uniform length is hoisted, the hoisting tool must be removed from the wire rope and then installed with a hoisting box and hoisting tool of another size. Frequent replacement damages the function of the wire rope and creates a safety hazard. In addition, the hoisting tool is generally welded to the hoisting box using ear plates. Frequent replacement of the hoisting tool and hoisting box requires multiple welding of the hoisting tool and the hoisting box. Considering that welding affects the function of the hoisting box and hoist, it creates a major safety hazard. Therefore, it is necessary to improve the existing hoisting tool. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a hanging box sling with adjustable length.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] The lifting link is installed in the lifting mode, and the lifting link is installed in the lifting mode. The lifting link is installed in the lifting mode. The lifting link is installed in the lifting mode. The lifting link is installed in the lifting mode. The lifting link is installed in the lifting mode.

[0006] Furthermore, 5-10 rows of connection holes are provided at each end of the main suspension beam.

[0007] Furthermore, two groups of lifting lugs are symmetrically provided on the main lifting beam.

[0008] Furthermore, the end of the side hanging beam away from the main hanging beam has an arc-shaped structure, and the hanging hole reinforcement plate is circular.

[0009] Furthermore, the connecting parts are bolts. When the side beam is adjusted to the required position, the fixing holes of the side beam are aligned with the connecting holes of the main beam, and then the bolts are passed through the connecting holes and the fixing holes in turn, and the ends of the bolts are tightened with nuts, thereby realizing the on-demand adjustment of the hanger length.

[0010] Furthermore, lifting hole reinforcement plates are provided on both sides of the corresponding lifting holes of the side lifting beam.

[0011] Furthermore, lifting ear reinforcement plates are provided on both sides of the lifting ear.

[0012] Furthermore, the structural reinforcement plate is simultaneously welded and fixed to the waist plate and the two side wing plates of the channel steel.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The invention has a simple structure and a reasonable design. Compared with the traditional method of replacing a sling when lifting a box girder of a certain length, the adjustable length sling can be recycled. By moving the slings on both sides outward or inward relative to the main sling, the length change of the box girder can be matched, and the lifting of box girders of different lengths can be completed, avoiding frequent replacement of slings. It is not only convenient to install and disassemble, but also saves construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 A schematic diagram of the structure created by the present invention;

[0017] Figure 2 for Figure 1 Cross-sectional view along the 1-1 direction;

[0018] Figure 3 for Figure 1 Cross-sectional view along the 2-2 direction;

[0019] Figure 4 This is a schematic diagram of the main suspension beam portion of the present invention;

[0020] Figure 5 for Figure 1 Schematic diagram of the spreader after the middle side beam is extended to increase the length of the spreader. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, features defined as "first", "second" and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art can understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] A length-adjustable lifting box sling, such as Figures 1 to 5 As shown, it includes a main suspension beam 1, side suspension beams 2 are respectively provided at both ends of the main suspension beam, the side suspension beams and the main suspension beam are fixed by connecting parts 3, several rows of connection holes 4 are respectively provided at both ends of the main suspension beam, and the main body of the side suspension beam is provided with fixing holes matching each row of connection holes; a lifting ear 5 is provided on the main suspension beam, and a lifting hole 6 is provided at one end of each side suspension beam away from the main suspension beam, and a number of stiffening plates 7 are provided between the lifting ear and the main suspension beam; main suspension beam reinforcement plates 8 are provided at the positions of the connection holes at both ends of the main suspension beam.

[0026] The main suspension beam includes two channel steels 9 arranged back to back in parallel. The upper ends of the two channel steels are welded to the upper plate 10, and the lower ends are welded to the lower plate 11. A slide 12 is formed between the upper plate and the lower plate. The main part of the side suspension beam is inserted into the slide and slides with the channel steels on both sides; the upper plate includes several upper plate splits 13, and the lower plate includes lower plate splits 14 corresponding to the upper plate splits one by one. The upper plate splits and the corresponding lower plate splits constitute a plate group, and a structural reinforcement plate 15 is provided between the two wings of the channel steel corresponding to each plate group.

[0027] Each end of the main beam is equipped with 5-10 rows of connection holes. Two sets of lifting lugs are symmetrically positioned on the main beam. The side beams, facing away from the main beam, are curved, with circular lifting hole reinforcement plates. Lifting hole reinforcement plates are installed on either side of the corresponding lifting holes in the side beams. Lifting lugs are also equipped with lifting lug reinforcement plates. The structural reinforcement plates are welded to the channel steel waist plate and both side wing plates.

[0028] Usually, the connecting pieces are bolts. Figure 5 As shown, the sling length can be increased simply by extending the side beams. To do this, first loosen the connectors, then adjust the side beams to the desired position. Align the side beam fixing holes with the nearest connection holes of the main beam. Bolts are then inserted through the connection and fixing holes, and nuts are tightened at the ends of the bolts. This allows for on-demand adjustment of the hanger length. The main body of the side beams is bolted to the channel steel on both sides. Because the main body of the side beams is vertically positioned, they offer a high load-bearing capacity, ensuring the overall stability of the sling.

[0029] The invention has a simple structure and a reasonable design. Compared with the traditional method of replacing a sling when lifting a box girder of a certain length, this adjustable length sling can be recycled. By moving the slings on both sides outward or inward relative to the main sling, the length change of the box girder can be matched, and the lifting of box girders of different lengths can be completed, avoiding frequent replacement of slings. It is not only convenient to install and disassemble, but also saves construction period. It has great promotion value and good social benefits, and provides a reference for the lifting and installation of prefabricated box girders with large span and large tonnage.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A length-adjustable hanging box sling, characterized by: The main suspension beam comprises a main suspension beam, side suspension beams are provided at both ends of the main suspension beam, the side suspension beams are fixed to the main suspension beam by connecting pieces, several rows of connection holes are provided at both ends of the main suspension beam, and the main body of the side suspension beam is provided with fixing holes matching the rows of connection holes; a lifting lug is provided on the main suspension beam, and a lifting hole is provided at one end of each side suspension beam away from the main suspension beam, and several stiffening plates are provided between the lifting lug and the main suspension beam; main suspension beam reinforcement plates are provided at the positions of the connection holes at both ends of the main suspension beam; the main suspension beam comprises back-to-back parallel arrangements Two channel steels, both of which have waist plates arranged vertically, are welded to the upper plate at their upper ends and to the lower plate at their lower ends, forming a slideway between the upper and lower plates; the main body of the side hanging beam is inserted into the slideway and slides with the channel steels on both sides; the upper plate includes several upper plate splits, and the lower plate includes lower plate splits corresponding to the upper plate splits one by one, and the upper plate splits and the corresponding lower plate splits constitute a plate group, and a structural reinforcement plate is provided between the two wings of the channel steel corresponding to each plate group.

2. The length-adjustable hanging box sling according to claim 1, characterized in that: Both ends of the main suspension beam are respectively provided with 5-10 rows of connection holes.

3. The length-adjustable hanging box sling according to claim 1, characterized in that: Two groups of lifting lugs are symmetrically provided on the main lifting beam.

4. The length-adjustable hanging box sling according to claim 1, characterized in that: The end of the side hanging beam away from the main hanging beam is in an arc-shaped structure, and the hanging hole reinforcement plate is circular.

5. The length-adjustable hanging box sling according to claim 1, characterized in that: The connecting piece is a bolt.

6. The length-adjustable hanging box sling according to claim 1, characterized in that: There are lifting hole reinforcement plates on both sides of the corresponding lifting holes of the side lifting beam.

7. The length-adjustable hanging box sling according to claim 1, characterized in that: There are lifting lug reinforcement plates on both sides of the lifting lug.

8. The length-adjustable hanging box sling according to claim 1, characterized in that: The structural reinforcement plate is welded and fixed to the waist plate and the two side wing plates of the channel steel at the same time.

Images