Hoisting special lifting appliance capable of improving stability of prefabricated box girder formwork

Abstract

The utility model discloses a hoist special for hoisting capable of improving the stability of prefabricated box girder template, including the connecting frame (1), the cantilever (2) is inclinedly connected on the one side top of connecting frame (1), the hoist board (3) is symmetrically connected in the both ends of cantilever (2), the fixed subassembly (4) is symmetrically connected in the both ends of one side below of connecting frame (1), is used for fixing the crossbeam (81) of prefabricated box girder template (8). The utility model discloses reasonable in structure, strong adaptability can improve hoisting stability greatly, reduce operation difficulty and time cost to the overall efficiency and security of bridge construction are improved, through the setting two groups of fixed subassembly, can improve stability, through the cooperation of the clamping plate and the supporting piece, make the template not easy to shake and shift in the hoisting process, ensure the accurate positioning of template, improve construction quality.

Description

Technical Field

[0001] This utility model relates to a lifting tool, specifically a special lifting tool for improving the stability of precast box girder formwork, belonging to the field of building construction technology. Background Technology

[0002] In modern bridge construction, box girders serve as the primary load-bearing structure, and their construction quality directly impacts the overall stability and safety of the bridge. The hoisting of precast box girder formwork is a crucial step in bridge construction; however, in actual construction, the precision and stability of the hoisting operation are often compromised.

[0003] Traditional lifting equipment designs often have several problems. For example, the structural design of the lifting equipment is unreasonable, resulting in poor adaptability to different specifications of box girder formwork and insufficient lifting stability. This can easily lead to formwork swaying and displacement during lifting, affecting construction accuracy and safety, and increasing construction safety hazards. In addition, due to the significant differences in the specifications and dimensions of box girder formwork, traditional lifting equipment often lacks sufficient adaptability to meet diverse needs and cannot meet the stable lifting requirements in different construction environments. The lifting operation is complex and inefficient, requiring construction personnel to make multiple adjustments and manual operations during the lifting process, which leads to extended construction cycles and increased labor costs.

[0004] Therefore, the key to solving the above-mentioned technical problems lies in developing a safe and reliable hoisting tool that can improve the stability of precast box girder formwork. Summary of the Invention

[0005] In view of the many defects and shortcomings existing in the above-mentioned background technology, this utility model has made improvements and innovations, with the aim of providing a special hoisting tool with reasonable structure and strong adaptability that can improve the stability of precast box girder formwork. It can greatly improve hoisting stability, reduce operation difficulty and time cost, thereby improving the overall efficiency and safety of bridge construction.

[0006] To solve the above problems and achieve the above-mentioned invention objectives, this utility model provides a special lifting tool for improving the stability of precast box girder formwork. This is achieved through the following design structure and the following technical solution:

[0007] Specialized lifting equipment that can improve the stability of precast box girder formwork includes:

[0008] Connector;

[0009] The cantilever is inclined and connected above one side of the connecting frame;

[0010] Suspended platforms are symmetrically connected to both ends of the cantilever.

[0011] The fixing components are symmetrically connected at both ends below one side of the connecting frame and are used to fix the crossbeams of the precast box girder formwork.

[0012] Preferably, the connecting frame includes:

[0013] The mounting bracket has an overall "H" shaped structure.

[0014] The horizontal bar is connected to the bottom of the mounting frame and is used to contact the vertical beams of the precast box girder formwork.

[0015] Preferably, the cantilever has an overall "H" shape and is fixedly connected to one side of the mounting frame at an upward tilt.

[0016] Preferably, the suspension plates are symmetrically connected to both ends of the cantilever, and the upper part of the suspension plates has multiple hoisting holes at equal or unequal intervals along its length.

[0017] Preferably, the inner diameters of the multiple lifting holes are the same or different, and the lifting holes are treated with wear resistance to adapt to different specifications of lifting hooks.

[0018] Preferably, the fixing component includes:

[0019] The card plate has one end fixedly connected to the mounting bracket;

[0020] The support component has one end connected to the card plate and the other end connected to the mounting bracket;

[0021] The card plate has slots that are compatible with the crossbeam.

[0022] Preferably, the card slot of the card plate is U-shaped or C-shaped, and a protective layer is provided on the card slot.

[0023] Preferably, the support member has a T-shaped cross-section, and a protective layer is provided on the upper surface of the support member.

[0024] Preferably, a first reinforcing plate is connected to the inner side of both ends of the cantilever, and one end of each of the two first reinforcing plates is connected to the inner sides of the upper part of the connecting frame.

[0025] Preferably, it further includes connecting components respectively provided on the hanging plates, the connecting components including:

[0026] The reinforcing rod has one end connected to the hanging plate and the other end connected to the connecting frame.

[0027] The second reinforcing plate has one end connected to the reinforcing rod and the other end connected to the connecting frame.

[0028] The working principle is as follows: Before using the special hoisting tool designed above, which can improve the stability of precast box girder formwork, it needs to be manufactured and installed as a backup.

[0029] Before use, the operator first inspects the precast box girder formwork (8) to ensure that the formwork structure is intact and confirms the center of gravity position (lifting position) of the formwork. At the same time, the operator checks whether the lifting straps, hooks and other parts of the lifting equipment (9) are intact and selects the connecting rope that matches the lifting hole (31).

[0030] When in use, the operator installs this lifting tool at the center of gravity of the precast box girder template (8). During installation, the operator first attaches the clips on the two sets of fixed components (4) of equal height to the designated crossbeam (81), and then the crossbar (12) abuts against the outside of the two vertical beams (82) of the precast box girder template (8). Subsequently, the connecting rope on the hook of the lifting equipment (9) is connected to the lifting holes (31) of the two lifting plates (3) respectively. Next, the operator checks again whether the connection between the lifting equipment (9) and this lifting tool is secure, ensuring that the precast box girder template (8) does not loosen during the lifting process. Finally, the operator can use the lifting equipment (9) (such as tower crane, bridge crane, etc.) to slowly lift the precast box girder template (8), thus completing the lifting work of this lifting tool.

[0031] During the hoisting process, the operators can use the hoisting equipment (9) to lift the precast box girder formwork (8) from the predetermined position and move it to the target installation position according to the actual needs of the construction site. At the same time, it is necessary to pay close attention to the balance of the precast box girder formwork (8) to avoid the formwork shifting or shaking due to an unstable center of gravity. When the formwork is hoisted to the correct position, the operators control the hoisting equipment (9) to gradually lower the formwork to ensure that there is no gap between the formwork and the supporting structure. Then, the formwork is firmly fixed in the predetermined position using fixing devices (such as support frames, bolts, fasteners, etc.) to ensure that the formwork will not shift or deform during construction.

[0032] After the hoisting is completed, i.e. after the template is fixed, the operator first removes the fixed component (4) of the hoist from the crossbeam (81), and then quickly removes the connecting rope of the hoisting equipment (9) from the hoisting plate (3).

[0033] During hoisting, the operator can adjust the hoisting position of the precast box girder formwork (8) according to the specific situation. The hoisting position of the hoisting hole (31) can also be adjusted to ensure that the hoisting equipment (9) is lifted smoothly and avoids the formwork tilting or swaying due to rapid rise.

[0034] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0035] 1. This utility model has a reasonable structure and strong adaptability, which can greatly improve the stability of hoisting, reduce the difficulty of operation and time cost, thereby improving the overall efficiency and safety of bridge construction;

[0036] 2. The two sets of fixing components set in this utility model can improve stability. Through the cooperation of the clamping plate and the supporting components, the template is not easy to shake or shift during the hoisting process, ensuring the precise positioning of the template and improving the construction quality.

[0037] 3. The lower part of this utility model abuts against the vertical beam, and the middle part is connected to the horizontal beam by two sets of fixing components. The operation is simple and the horizontal beam can be locked quickly, which reduces manual operation, shortens the hoisting time, and improves construction efficiency.

[0038] 4. This utility model is equipped with reinforcing components, which can ensure safety and stability during the hoisting process and reduce the risks caused by unstable connection of the hoisting tool;

[0039] 5. This utility model has a simple structure and low manufacturing cost, which improves the overall economic benefits of construction.

[0040] 6. The lifting plate of this utility model is provided with multiple lifting holes, which can be adjusted according to the center of gravity of different precast box girder templates. This not only improves the stability, accuracy and safety of the lifting operation, but also enhances the adaptability and ease of operation of the lifting equipment, reduces the risk of problems during construction and improves construction efficiency. Attached Figure Description

[0041] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0042] Figure 1 This is one of the usage state diagrams of this utility model;

[0043] Figure 2 This is the second diagram showing the usage state of this utility model;

[0044] Figure 3 This is one of the overall structural schematic diagrams of this utility model;

[0045] Figure 4 This is the second schematic diagram of the overall structure of this utility model;

[0046] Figure 5 This is the third schematic diagram of the overall structure of this utility model;

[0047] Figure 6 This is one of the side views of this utility model;

[0048] Figure 7 This is the second side view of this utility model;

[0049] Figure 8 This is an exploded view of this utility model;

[0050] In the diagram, the numbers are: 1—connecting frame, 11—mounting frame, 12—crossbar;

[0051] 2—Cantilever;

[0052] 3—Hanging plate, 31—Hanging hole;

[0053] 4—Fixing component; 41—Clamping plate; 42—Supporting component;

[0054] 5—First reinforcing plate;

[0055] 6—Strengthening rod;

[0056] 7—Second reinforcing plate;

[0057] 8—Precast box girder formwork; 81—Horizontal beam; 82—Vertical beam;

[0058] 9—Lifting equipment. Detailed Implementation

[0059] To make the technical means, inventive features, objectives, and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] As per the instruction manual Figures 1 to 8 As shown, a special lifting tool for improving the stability of precast box girder formwork includes: a connecting frame 1;

[0061] Cantilever 2 is inclinedly connected to the upper side of the connecting frame 1;

[0062] Suspension plate 3 is symmetrically connected to both ends of cantilever 2;

[0063] The fixing component 4 is symmetrically connected to both ends of the lower side of the connecting frame 1 and is used to fix the crossbeam 81 of the precast box girder template 8.

[0064] Furthermore, the connecting frame 1 includes:

[0065] Mounting bracket 11, the mounting bracket 11 is in the shape of an "H" shape;

[0066] The horizontal bar 12 is connected to the bottom of the mounting frame 11 and is used to contact the vertical beam 82 of the precast box girder formwork 8.

[0067] Specifically, the cantilever 2 has an overall "H" shape and is fixedly connected to one side of the mounting bracket 11 at an upward angle.

[0068] Furthermore, the hanging plate 3 is symmetrically connected to both ends of the cantilever 2, and the upper part of the hanging plate 3 is provided with multiple lifting holes 31 at equal or unequal intervals along its length.

[0069] Specifically, the inner diameters of the multiple lifting holes 31 may be the same or different, and the lifting holes 31 are treated with wear resistance to adapt to different specifications of lifting hooks.

[0070] Furthermore, the fixing component 4 includes:

[0071] Card plate 41, one end of which is fixedly connected to mounting bracket 11;

[0072] Support member 42, one end of which is connected to the card plate 41 and the other end is connected to the mounting bracket 11;

[0073] The card plate 41 has a slot that is compatible with the crossbeam 81.

[0074] Specifically, the card slot of the card plate 41 is U-shaped or C-shaped, and a protective layer is provided on the card slot.

[0075] Preferably, the latch plate 41 has several rubber protrusions inside the latch, which facilitates secure connection with crossbeams 81 of different specifications.

[0076] Furthermore, the support member 42 has a T-shaped cross-section, and a protective layer is provided on the upper surface of the support member 42.

[0077] Furthermore, a first reinforcing plate 5 is connected to the inner side of both ends of the cantilever 2, and one end of each of the two first reinforcing plates 5 is connected to the inner sides of the upper part of the connecting frame 1.

[0078] Furthermore, it also includes connecting components respectively installed on the hanging plate 3, the connecting components including:

[0079] Reinforcing rod 6, one end of which is connected to hanging plate 3, and the other end is connected to connecting frame 1;

[0080] The second reinforcing plate 7 has one end connected to the reinforcing rod 6 and the other end connected to the connecting frame 1.

[0081] In summary, the special lifting equipment designed to improve the stability of precast box girder formwork should be manufactured and installed as a backup before use.

[0082] Before use, the operator first inspects the precast box girder formwork 8 to ensure that the formwork structure is intact and confirms the center of gravity position of the formwork and the hoisting position. At the same time, the operator checks whether the hoisting equipment 9, such as the slings and hooks, is intact and selects the connecting rope that is compatible with the hoisting hole 31.

[0083] In use, the operator installs the lifting device at the center of gravity of the precast box girder formwork 8. During installation, the operator first engages the latches on the two sets of fixed components 4 at the same height with the designated crossbeam 81. Then, the crossbar 12 is abutted against the outside of the two vertical beams 82 of the precast box girder formwork 8. Subsequently, the connecting rope on the hook of the lifting equipment 9 is connected to the lifting holes 31 of the two lifting plates 3 respectively. Next, the operator checks again whether the connection between the lifting equipment 9 and the lifting device is secure, ensuring that the precast box girder formwork 8 does not loosen during the lifting process. Finally, the operator can use the lifting equipment 9, such as a tower crane or bridge crane, to slowly lift the precast box girder formwork 8, thus completing the lifting work of the lifting device.

[0084] During the hoisting process, operators can use the hoisting equipment 9 to lift the precast box girder formwork 8 from the predetermined position and move it to the target installation position according to the actual needs of the construction site. Simultaneously, it is necessary to constantly monitor the balance of the precast box girder formwork 8 to prevent it from shifting or swaying due to an unstable center of gravity. When the formwork is hoisted to the correct position, the operators control the hoisting equipment 9 to gradually lower the formwork, ensuring there are no gaps between the formwork and the supporting structure. Then, fixing devices such as support frames, bolts, and fasteners are used to securely fix the formwork in the predetermined position, ensuring that the formwork will not shift or deform during construction.

[0085] After the hoisting is completed, i.e. after the template is fixed, the operator first removes the fixing component 4 of the hoist from the crossbeam 81, and then quickly removes the connecting rope of the hoisting equipment 9 from the hoisting plate 3.

[0086] During hoisting, operators can adjust the hoisting position of the precast box girder formwork 8 according to the specific situation. They can also adjust the hoisting position of the hoisting hole 31 to ensure that the hoisting equipment 9 is lifted smoothly and avoids the formwork tilting or swaying due to rapid ascent.

[0087] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A special lifting tool for improving the stability of precast box girder formwork, characterized in that: Comprising: a connecting frame (1); a cantilever (2), wherein the cantilever (2) is tiltedly connected to the upper part of one side of the connecting frame (1); lifting plates (3), wherein the lifting plates (3) are symmetrically connected to two ends of the cantilever (2); fixing assemblies (4), which are symmetrically connected to two ends of the lower part of one side of the connecting frame (1) and are used for fixing a cross beam (81) of a prefabricated box girder formwork (8).

2. The special lifting tool for improving the stability of precast box girder formwork according to claim 1, characterized in that: The connecting frame (1) comprises: a mounting frame (11), wherein the mounting frame (11) is of an overall H-shaped structure; a cross bar (12), wherein the cross bar (12) is connected to the bottom of the mounting frame (11) and is used for contacting with a vertical beam (82) of the prefabricated box girder formwork (8).

3. The special lifting tool for improving the stability of precast box girder formwork according to claim 1 or 2, characterized in that: The cantilever (2) is of an overall H-shaped structure, and the cantilever (2) is upwards inclined and fixedly connected to the upper part of one side of the mounting frame (11).

4. The special lifting tool for improving the stability of precast box girder formwork according to claim 3, characterized in that: The lifting plates (3) are symmetrically connected to two ends of the cantilever (2), and a plurality of lifting holes (31) are formed in the upper part of each lifting plate (3) at equal or unequal intervals along the length direction of the lifting plate.

5. The special lifting tool for improving the stability of precast box girder formwork according to claim 4, characterized in that: The plurality of lifting holes (31) have the same or different inner diameters, and the lifting holes (31) are subjected to wear-resistant treatment to adapt to lifting hooks of different specifications.

6. The special lifting tool for improving the stability of precast box girder formwork according to claim 1, characterized in that: The fixing assembly (4) comprises: a clamping plate (41), wherein one end of the clamping plate (41) is fixedly connected to the mounting frame (11); a supporting member (42), wherein one end of the supporting member (42) is connected to the clamping plate (41), and the other end is connected to the mounting frame (11); wherein a bayonet adapted to the cross beam (81) is formed on the clamping plate (41).

7. The special lifting tool for improving the stability of precast box girder formwork according to claim 6, characterized in that: The bayonet of the clamping plate (41) is U-shaped or open rectangular, and a protective layer is further arranged on the bayonet.

8. The special lifting tool for improving the stability of precast box girder formwork according to claim 7, characterized in that: The cross section of the supporting member (42) is T-shaped, and a protective layer is further arranged on the upper surface of the supporting member (42).

9. The special lifting tool for improving the stability of precast box girder formwork according to claim 1, characterized in that: First reinforcing plates (5) are further connected to inner sides of two ends of the cantilever (2), and one ends of the two first reinforcing plates (5) are connected to two sides of the inner upper part of the connecting frame (1).

10. The special lifting tool for improving the stability of precast box girder formwork according to claim 1, characterized in that: The device further comprises connecting assemblies respectively arranged on the lifting plates (3), and each connecting assembly comprises: a reinforcing rod (6), wherein one end face of the reinforcing rod (6) is connected to the lifting plate (3), and the other end is connected to the connecting frame (1); a second reinforcing plate (7), wherein one end face of the second reinforcing plate (7) is connected to the reinforcing rod (6), and the other end is connected to the connecting frame (1).

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