Anti-cracking hoisting device for prefabricated box girder top plate

Abstract

The utility model is suitable for the technical field of hoisting devices, and provides an anti-cracking hoisting device for a prefabricated box girder top plate. The slot is formed in the outer side wall of the lifting frame; the supporting plate penetrates through the interior of the slot; the groove is formed in the outer side wall of the supporting plate; the limiting hole is formed in the supporting plate and is adjacent to the outer side wall of the groove; the fixed cover is fixed on the outer side wall of the hoisting frame through a bolt; the first hydraulic cylinder is fixed on the outer side wall of the fixed cover through a bolt; the limiting rod is fixed at the output end of the first hydraulic cylinder; through arrangement of the supporting plate, stable bearing can be provided for hoisting of the prefabricated box girder, the supporting plate supporting structure is high in strength and not prone to being damaged, through mutual cooperation of the rotating plate and the baffle, the rotating plate can be attached to the surface of the lower end of a flange plate of the prefabricated box girder, the baffle limits the outer side of the top of the prefabricated box girder, limiting of the prefabricated box girder is achieved, and the practicability is high. And the hoisting stability of the prefabricated box girder is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of hoisting devices, in particular to an anti-cracking hoisting device for a prefabricated box beam top plate. Background Art

[0002] With the rapid development of highway construction technology, how to make the highway construction fast, effective, and with guaranteed quality and quantity has become a new direction for the construction of elevated bridge projects. As we all know, prefabricated concrete box girders are now widely used in elevated bridge projects, but due to the large volume of prefabricated box girders, the erection process usually uses at least two heavy lifting equipment.

[0003] At present, the lifting device of prefabricated box beam generally includes at least two cranes and at least two steel wire ropes. When the prefabricated box beam needs to be lifted, the staff first moves the at least two cranes to the two ends of the prefabricated box beam respectively, and then the staff respectively bundles one end of the at least two steel wire ropes and sets them on the two ends of the prefabricated box beam, and respectively hangs the other ends of the at least two steel wire ropes on the hooks of at least two cranes, and finally starts at least two cranes at the same time to realize the transportation and erection of the prefabricated box beam. The contact area between the steel wire rope and the prefabricated box beam is small, which can easily cause problems such as local rupture of the prefabricated box beam.

[0004] In the prior art, a Chinese patent with a reference number of CN 117163817 B discloses a prefabricated box girder lifting device, which clamps the prefabricated box girder and lifts it onto the cap beam, including a positioning assembly, a connecting assembly, a limiting assembly, an angle adjustment assembly, a locking assembly and a moving assembly; the connecting assembly, the limiting assembly, the angle adjustment assembly and the locking assembly are symmetrically arranged in two groups along the center line of the positioning assembly; the connecting assembly is fixedly arranged at the bottom of the positioning assembly, and the opposite sides of the two groups of connecting assemblies are respectively abutted or separated from the side parts of the flanges on both sides of the prefabricated box girder, and the non-opposite sides of the two groups of connecting assemblies are both provided with locking assemblies. The utility model uses the positioning assembly, the angle adjustment assembly and the limiting assembly to work together to make the device adapt to prefabricated box girders of different specifications, thereby avoiding the need to replace the lifting device when lifting prefabricated box girders of different specifications.

[0005] The comparative document provides a prefabricated box girder lifting device, but the above patent uses an angle adjustment component to support the prefabricated box girder as a whole when lifting the prefabricated box girder. Since the angle adjustment component is composed of a large number of rotating structures, the structural strength of the angle adjustment component is poor. Since the prefabricated box girder is heavy, when the prefabricated box girder is lifted, the angle adjustment component in the lifting device is prone to problems such as insufficient support force, rotation, and even damage to the rotating structure.

[0006] Therefore, an anti-cracking hoisting device for the top plate of prefabricated box beam is proposed. Utility Model Content

[0007] The utility model provides an anti-cracking hoisting device for a prefabricated box beam top plate, aiming to solve the above-mentioned problem.

[0008] The utility model is implemented as follows: an anti-cracking lifting device for a prefabricated box girder top plate comprises: a lifting frame; a slot opened on the outer wall of the lifting frame; a support plate running through the inside of the slot; a groove opened on the outer wall of the support plate; and a limiting hole opened on the outer wall of the support plate adjacent to the groove; a fixing cover fixed to the outer wall of the lifting frame by bolts; a first hydraulic cylinder fixed to the outer wall of the fixing cover by bolts; a limiting rod fixed to the output end of the first hydraulic cylinder; a fixing platform welded to the inner wall of the lifting frame; a second hydraulic cylinder fixed to the bottom of the fixing platform by bolts; a lifting plate fixed to the output end of the second hydraulic cylinder; two support seats symmetrically welded to the top of the lifting plate; a rotating plate rotating between the two support seats; a third hydraulic cylinder fixed to the outer wall of the lifting frame by bolts; a baffle fixed to the output end of the third hydraulic cylinder; a prefabricated box girder running through the inner side of the lifting frame; and a lifting ring welded at the central position of the top of the lifting frame.

[0009] Preferably, the limiting rod can pass through the limiting hole, and a concave hole is formed on the inner side wall of the slot at a position close to the limiting rod.

[0010] Preferably, the fixed cover is a hollow rectangular parallelepiped structure with one side open.

[0011] Preferably, the cross section of the lifting plate is an L-shaped structure, and the lifting plate and the hanging frame are slidably connected via a slider and a slide groove.

[0012] Preferably, there are two slots in total, and the two slots are symmetrically opened on the outer side wall of the hanging frame.

[0013] Preferably, the cross section of the rotating plate is a "convex" shaped structure.

[0014] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0015] The setting of the pallet can provide stable support for the hoisting of the prefabricated box girder. The pallet supporting structure has high strength and is not prone to damage. The cooperation between the turn plate and the baffle can make the turn plate fit with the lower end surface of the flange plate of the prefabricated box girder. The baffle limits the outer side of the top of the prefabricated box girder to achieve positioning of the prefabricated box girder, ensure the stability of the prefabricated box girder during hoisting, and avoid shaking of the prefabricated box girder during hoisting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2It is a structural schematic diagram of the hanging frame of the utility model;

[0018] Figure 3 It is a schematic diagram of the lifting plate structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the connection between the limit hole and the limit rod of the utility model;

[0020] Figure 5 It is a schematic diagram of the baffle structure of the utility model.

[0021] In the figure: 1. lifting frame; 2. slot; 3. support plate; 4. groove; 5. limit hole; 6. fixed cover; 7. first hydraulic cylinder; 8. limit rod; 9. fixed platform; 10. second hydraulic cylinder; 11. lifting plate; 12. support seat; 13. rotating plate; 14. third hydraulic cylinder; 15. baffle; 16. prefabricated box beam; 17. lifting ring. DETAILED DESCRIPTION

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0023] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] The utility model embodiment provides a prefabricated box beam top plate anti-crack hoisting device, such as Figure 1-Figure 5As shown, it includes a hanging frame 1, a slot 2 is opened on the outer wall of one side of the hanging frame 1, and there are two slots 2, and the two slots 2 are symmetrically opened on the outer wall of the hanging frame 1, and a support plate 3 is penetrated inside the slot 2, and a groove 4 is opened on the outer wall of one side of the support plate 3, and a limiting hole 5 is opened on the outer wall of one side of the support plate 3 adjacent to the groove 4, and a fixing cover 6 is fixedly connected to the outer wall of the hanging frame 1 adjacent to the slot 2 by bolts, and the fixing cover 6 is a hollow rectangular parallelepiped structure with one side open, and a first hydraulic cylinder 7 is fixedly connected to the outer wall of the fixing cover 6 away from the hanging frame 1 by bolts, and the first hydraulic cylinder 7 is fixedly connected to the limiting rod 8 through the output end of one side thereof, and one side of the hanging frame 1 A fixing platform 9 is fixedly connected by bolts at an upper position near the slot 2 on the side inner wall, a second hydraulic cylinder 10 is fixedly connected to the bottom of the fixing platform 9 by bolts, the second hydraulic cylinder 10 is fixedly connected to a lifting plate 11 through an output end on one side thereof, two supporting seats 12 are symmetrically welded to the top of the lifting plate 11, a rotating plate 13 is rotatably connected between the two supporting seats 12, a third hydraulic cylinder 14 is fixedly connected by bolts at an upper position near the rotating plate 13 on an outer wall on one side of the lifting frame 1, a baffle 15 is fixedly connected to the third hydraulic cylinder 14 through an output end on one side thereof, a prefabricated box beam 16 passes through the inner side of the lifting frame 1, and a lifting ring 17 is welded at the top center position of the lifting frame 1.

[0025] It should be noted that, since the existing prefabricated box girder lifting device is prone to problems such as the angle adjustment component in the lifting device causing loss of force, rotation, or even damage to the rotating structure due to insufficient supporting force during lifting, the present embodiment can provide stable support for the lifting of the prefabricated box girder 16 through the setting of the support plate 3. The support structure of the support plate 3 has high strength and is not prone to damage. The rotating plate 13 and the baffle plate 15 cooperate with each other to make the rotating plate 13 fit with the lower end surface of the flange plate of the prefabricated box girder 16, and the baffle plate 15 limits the outer side of the top of the prefabricated box girder 16 to limit the prefabricated box girder 16, thereby ensuring the stability of the prefabricated box girder 16 during lifting and preventing the prefabricated box girder 16 from shaking during lifting.

[0026] Specifically, in the present embodiment, the present scheme mainly comprises a hoisting frame 1. When in use, the hook on the crane is hooked on the lifting ring 17. The crane is used to control the movement of the hoisting frame 1 and move the hoisting frame 1 to one side of the prefabricated box girder 16. The hoisting frame 1 is sleeved on the outside of the prefabricated box girder 16. At this time, the pallet 3 is inserted into the slot 2 on the hoisting frame 1. The groove 4 on the pallet 3 is provided to provide a position for the insertion of a forklift. When the pallet 3 is fully inserted into the slot 2, the first hydraulic cylinder 7 is controlled to work. The first hydraulic cylinder 7 drives the limit rod 8 to move through the output end on one side thereof. The limit rod 8 is inserted into the limit hole 5 on the pallet 3 to realize the limit connection between the hoisting frame 1 and the pallet 3. The crane drives the hoisting frame 1 to move upward, and the top of the pallet 3 and the prefabricated box girder 1 are connected. 6, to support the prefabricated box girder 16, control the second hydraulic cylinder 10 to work, the second hydraulic cylinder 10 drives the lifting plate 11 to move upward through the output end on one side thereof, and the rotating plate 13 on the lifting plate 11 moves upward synchronously, and the rotating characteristic of the rotating plate 13 makes the rotating plate 13 fit with the lower end surface of the flange plate of the prefabricated box girder 16, so that the rotating plate 13 can better support the top plate of the prefabricated box girder 16, and finally control the third hydraulic cylinder 14 to work, the third hydraulic cylinder 14 drives the baffle plate 15 to move through the output end on one side thereof, and the baffle plate 15 contacts the outer side wall of the top plate of the prefabricated box girder 16, to limit the prefabricated box girder 16, to ensure the stability of the prefabricated box girder 16 during hoisting, and to avoid the prefabricated box girder 16 from shaking during hoisting.

[0027] In a further preferred embodiment of the present invention, Figure 2 As shown, the limiting rod 8 can pass through the limiting hole 5, and a concave hole is opened at a position on one side of the inner wall of the slot 2 close to the limiting rod 8.

[0028] In this embodiment, the recessed hole is provided to provide a limiting support for one end of the limiting rod 8 passing through the limiting hole 5 on the supporting plate 3 , so that the supporting plate 3 is stably limited inside the slot 2 .

[0029] In a further preferred embodiment of the present invention, Figure 1-Figure 2 As shown, the cross section of the lifting plate 11 is an L-shaped structure, and the lifting plate 11 and the hanging frame 1 are slidably connected through a slider and a slide groove.

[0030] In this embodiment, the L-shaped lifting plate 11 can provide space for the installation of the support seat 12, and the sliding connection can ensure the stability of the lifting plate 11 when it is lifted and lowered on the inner wall of the hanging frame 1.

[0031] In a further preferred embodiment of the present invention, Figure 2-Figure 3 As shown, the cross section of the rotating plate 13 is a "convex" shaped structure.

[0032] In this embodiment, the rotating plate 13 can be rotated between the two supporting seats 12 .

[0033] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0034] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0035] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0036] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. Anti-crack hoisting device for prefabricated box beam top plate, characterized in that: include: Lifting frame (1); A slot (2) formed on the outer side wall of the hanging frame (1); A support plate (3) extending through the interior of the slot (2); A groove (4) formed on the outer side wall of the support plate (3); and A limiting hole (5) is provided on the outer wall of the support plate (3) adjacent to the groove (4); A fixing cover (6) fixed to the outer side wall of the hanging frame (1) by means of bolts; A first hydraulic cylinder (7) fixed to the outer side wall of the fixed cover (6) by means of bolts; A limit rod (8) fixed to the output end of the first hydraulic cylinder (7); A fixing platform (9) welded to the inner wall of the hanging frame (1); A second hydraulic cylinder (10) fixed to the bottom of the fixing platform (9) by bolts; A lifting plate (11) fixed to the output end of the second hydraulic cylinder (10); Two support seats (12) symmetrically welded to the top of the lifting plate (11); A rotating plate (13) rotating between the two support seats (12); A third hydraulic cylinder (14) fixed to the outer side wall of the hanging frame (1) by means of bolts; a baffle (15) fixed to the output end of the third hydraulic cylinder (14); a prefabricated box beam (16) passing through the inner side of the hanging frame (1); and A lifting ring (17) welded to the central position of the top of the lifting frame (1).

2. The anti-cracking hoisting device for the top plate of the prefabricated box beam according to claim 1, characterized in that: The limiting rod (8) can pass through the limiting hole (5), and a concave hole is provided on the inner side wall of the slot (2) at a position close to the limiting rod (8).

3. The anti-cracking hoisting device for the top plate of the prefabricated box beam according to claim 1, characterized in that: The fixed cover (6) is a hollow rectangular parallelepiped structure with one side open.

4. The anti-cracking hoisting device for the top plate of the prefabricated box beam according to claim 1, characterized in that: The cross section of the lifting plate (11) is an L-shaped structure, and the lifting plate (11) and the hanging frame (1) are slidably connected via a sliding block and a sliding groove.

5. The anti-cracking hoisting device for the top plate of the prefabricated box beam according to claim 1, characterized in that: There are two slots (2) in total, and the two slots (2) are symmetrically arranged on the outer side wall of the hanging frame (1).

6. The anti-cracking hoisting device for the top plate of the prefabricated box beam according to claim 1, characterized in that: The cross section of the rotating plate (13) is a "convex"-shaped structure.

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